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Commit d0f474e501929acdbd116cca39ef083012f70f25

Authored by Roland Dreier
Committed by Nicholas Bellinger
1 parent d5b4a21b3d
Exists in smarc-l5.0.0_1.0.0-ga and in 5 other branches imx_3.10.17_1.0.1_ga, imx_3.10.53_1.1.0_ga, imx_3.14.28_1.0.0_ga, smarc-imx_3.10.53_1.1.0_ga, smarc-imx_3.14.28_1.0.0_ga

target: Use LIST_HEAD()/DEFINE_MUTEX() for static objects 

Instead of

   static struct list_head foo;
   static struct mutex bar;

   ...

   INIT_LIST_HEAD(&foo);
   mutex_init(&bar);

just do

   static LIST_HEAD(foo);
   static DEFINE_MUTEX(bar);

Also remove some superfluous struct list_head and spinlock_t
initialization calls where the variables are already defined using
macros that initialize them.

This saves a decent amount of compiled code too:

    add/remove: 0/0 grow/shrink: 0/3 up/down: 0/-178 (-178)
    function                                     old     new   delta
    target_core_init_configfs                    898     850     -48
    core_scsi3_emulate_pro_preempt              1742    1683     -59
    iscsi_thread_set_init                        159      88     -71

Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

Showing 3 changed files with 4 additions and 14 deletions Inline Diff

drivers/target/iscsi/iscsi_target_tq.c
Diff comments   View file @ d0f474e
1 /******************************************************************************* 1 /*******************************************************************************
2 * This file contains the iSCSI Login Thread and Thread Queue functions. 2 * This file contains the iSCSI Login Thread and Thread Queue functions.
3 * 3 *
4 * \u00a9 Copyright 2007-2011 RisingTide Systems LLC. 4 * \u00a9 Copyright 2007-2011 RisingTide Systems LLC.
5 * 5 *
6 * Licensed to the Linux Foundation under the General Public License (GPL) version 2. 6 * Licensed to the Linux Foundation under the General Public License (GPL) version 2.
7 * 7 *
8 * Author: Nicholas A. Bellinger <nab@linux-iscsi.org> 8 * Author: Nicholas A. Bellinger <nab@linux-iscsi.org>
9 * 9 *
10 * This program is free software; you can redistribute it and/or modify 10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by 11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or 12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version. 13 * (at your option) any later version.
14 * 14 *
15 * This program is distributed in the hope that it will be useful, 15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details. 18 * GNU General Public License for more details.
19 ******************************************************************************/ 19 ******************************************************************************/
20 20
21 #include <linux/kthread.h> 21 #include <linux/kthread.h>
22 #include <linux/list.h> 22 #include <linux/list.h>
23 #include <linux/bitmap.h> 23 #include <linux/bitmap.h>
24 24
25 #include "iscsi_target_core.h" 25 #include "iscsi_target_core.h"
26 #include "iscsi_target_tq.h" 26 #include "iscsi_target_tq.h"
27 #include "iscsi_target.h" 27 #include "iscsi_target.h"
28 28
29 static LIST_HEAD(active_ts_list); 29 static LIST_HEAD(active_ts_list);
30 static LIST_HEAD(inactive_ts_list); 30 static LIST_HEAD(inactive_ts_list);
31 static DEFINE_SPINLOCK(active_ts_lock); 31 static DEFINE_SPINLOCK(active_ts_lock);
32 static DEFINE_SPINLOCK(inactive_ts_lock); 32 static DEFINE_SPINLOCK(inactive_ts_lock);
33 static DEFINE_SPINLOCK(ts_bitmap_lock); 33 static DEFINE_SPINLOCK(ts_bitmap_lock);
34 34
35 static void iscsi_add_ts_to_active_list(struct iscsi_thread_set *ts) 35 static void iscsi_add_ts_to_active_list(struct iscsi_thread_set *ts)
36 { 36 {
37 spin_lock(&active_ts_lock); 37 spin_lock(&active_ts_lock);
38 list_add_tail(&ts->ts_list, &active_ts_list); 38 list_add_tail(&ts->ts_list, &active_ts_list);
39 iscsit_global->active_ts++; 39 iscsit_global->active_ts++;
40 spin_unlock(&active_ts_lock); 40 spin_unlock(&active_ts_lock);
41 } 41 }
42 42
43 extern void iscsi_add_ts_to_inactive_list(struct iscsi_thread_set *ts) 43 extern void iscsi_add_ts_to_inactive_list(struct iscsi_thread_set *ts)
44 { 44 {
45 spin_lock(&inactive_ts_lock); 45 spin_lock(&inactive_ts_lock);
46 list_add_tail(&ts->ts_list, &inactive_ts_list); 46 list_add_tail(&ts->ts_list, &inactive_ts_list);
47 iscsit_global->inactive_ts++; 47 iscsit_global->inactive_ts++;
48 spin_unlock(&inactive_ts_lock); 48 spin_unlock(&inactive_ts_lock);
49 } 49 }
50 50
51 static void iscsi_del_ts_from_active_list(struct iscsi_thread_set *ts) 51 static void iscsi_del_ts_from_active_list(struct iscsi_thread_set *ts)
52 { 52 {
53 spin_lock(&active_ts_lock); 53 spin_lock(&active_ts_lock);
54 list_del(&ts->ts_list); 54 list_del(&ts->ts_list);
55 iscsit_global->active_ts--; 55 iscsit_global->active_ts--;
56 spin_unlock(&active_ts_lock); 56 spin_unlock(&active_ts_lock);
57 } 57 }
58 58
59 static struct iscsi_thread_set *iscsi_get_ts_from_inactive_list(void) 59 static struct iscsi_thread_set *iscsi_get_ts_from_inactive_list(void)
60 { 60 {
61 struct iscsi_thread_set *ts; 61 struct iscsi_thread_set *ts;
62 62
63 spin_lock(&inactive_ts_lock); 63 spin_lock(&inactive_ts_lock);
64 if (list_empty(&inactive_ts_list)) { 64 if (list_empty(&inactive_ts_list)) {
65 spin_unlock(&inactive_ts_lock); 65 spin_unlock(&inactive_ts_lock);
66 return NULL; 66 return NULL;
67 } 67 }
68 68
69 list_for_each_entry(ts, &inactive_ts_list, ts_list) 69 list_for_each_entry(ts, &inactive_ts_list, ts_list)
70 break; 70 break;
71 71
72 list_del(&ts->ts_list); 72 list_del(&ts->ts_list);
73 iscsit_global->inactive_ts--; 73 iscsit_global->inactive_ts--;
74 spin_unlock(&inactive_ts_lock); 74 spin_unlock(&inactive_ts_lock);
75 75
76 return ts; 76 return ts;
77 } 77 }
78 78
79 extern int iscsi_allocate_thread_sets(u32 thread_pair_count) 79 extern int iscsi_allocate_thread_sets(u32 thread_pair_count)
80 { 80 {
81 int allocated_thread_pair_count = 0, i, thread_id; 81 int allocated_thread_pair_count = 0, i, thread_id;
82 struct iscsi_thread_set *ts = NULL; 82 struct iscsi_thread_set *ts = NULL;
83 83
84 for (i = 0; i < thread_pair_count; i++) { 84 for (i = 0; i < thread_pair_count; i++) {
85 ts = kzalloc(sizeof(struct iscsi_thread_set), GFP_KERNEL); 85 ts = kzalloc(sizeof(struct iscsi_thread_set), GFP_KERNEL);
86 if (!ts) { 86 if (!ts) {
87 pr_err("Unable to allocate memory for" 87 pr_err("Unable to allocate memory for"
88 " thread set.\n"); 88 " thread set.\n");
89 return allocated_thread_pair_count; 89 return allocated_thread_pair_count;
90 } 90 }
91 /* 91 /*
92 * Locate the next available regision in the thread_set_bitmap 92 * Locate the next available regision in the thread_set_bitmap
93 */ 93 */
94 spin_lock(&ts_bitmap_lock); 94 spin_lock(&ts_bitmap_lock);
95 thread_id = bitmap_find_free_region(iscsit_global->ts_bitmap, 95 thread_id = bitmap_find_free_region(iscsit_global->ts_bitmap,
96 iscsit_global->ts_bitmap_count, get_order(1)); 96 iscsit_global->ts_bitmap_count, get_order(1));
97 spin_unlock(&ts_bitmap_lock); 97 spin_unlock(&ts_bitmap_lock);
98 if (thread_id < 0) { 98 if (thread_id < 0) {
99 pr_err("bitmap_find_free_region() failed for" 99 pr_err("bitmap_find_free_region() failed for"
100 " thread_set_bitmap\n"); 100 " thread_set_bitmap\n");
101 kfree(ts); 101 kfree(ts);
102 return allocated_thread_pair_count; 102 return allocated_thread_pair_count;
103 } 103 }
104 104
105 ts->thread_id = thread_id; 105 ts->thread_id = thread_id;
106 ts->status = ISCSI_THREAD_SET_FREE; 106 ts->status = ISCSI_THREAD_SET_FREE;
107 INIT_LIST_HEAD(&ts->ts_list); 107 INIT_LIST_HEAD(&ts->ts_list);
108 spin_lock_init(&ts->ts_state_lock); 108 spin_lock_init(&ts->ts_state_lock);
109 init_completion(&ts->rx_post_start_comp); 109 init_completion(&ts->rx_post_start_comp);
110 init_completion(&ts->tx_post_start_comp); 110 init_completion(&ts->tx_post_start_comp);
111 init_completion(&ts->rx_restart_comp); 111 init_completion(&ts->rx_restart_comp);
112 init_completion(&ts->tx_restart_comp); 112 init_completion(&ts->tx_restart_comp);
113 init_completion(&ts->rx_start_comp); 113 init_completion(&ts->rx_start_comp);
114 init_completion(&ts->tx_start_comp); 114 init_completion(&ts->tx_start_comp);
115 115
116 ts->create_threads = 1; 116 ts->create_threads = 1;
117 ts->tx_thread = kthread_run(iscsi_target_tx_thread, ts, "%s", 117 ts->tx_thread = kthread_run(iscsi_target_tx_thread, ts, "%s",
118 ISCSI_TX_THREAD_NAME); 118 ISCSI_TX_THREAD_NAME);
119 if (IS_ERR(ts->tx_thread)) { 119 if (IS_ERR(ts->tx_thread)) {
120 dump_stack(); 120 dump_stack();
121 pr_err("Unable to start iscsi_target_tx_thread\n"); 121 pr_err("Unable to start iscsi_target_tx_thread\n");
122 break; 122 break;
123 } 123 }
124 124
125 ts->rx_thread = kthread_run(iscsi_target_rx_thread, ts, "%s", 125 ts->rx_thread = kthread_run(iscsi_target_rx_thread, ts, "%s",
126 ISCSI_RX_THREAD_NAME); 126 ISCSI_RX_THREAD_NAME);
127 if (IS_ERR(ts->rx_thread)) { 127 if (IS_ERR(ts->rx_thread)) {
128 kthread_stop(ts->tx_thread); 128 kthread_stop(ts->tx_thread);
129 pr_err("Unable to start iscsi_target_rx_thread\n"); 129 pr_err("Unable to start iscsi_target_rx_thread\n");
130 break; 130 break;
131 } 131 }
132 ts->create_threads = 0; 132 ts->create_threads = 0;
133 133
134 iscsi_add_ts_to_inactive_list(ts); 134 iscsi_add_ts_to_inactive_list(ts);
135 allocated_thread_pair_count++; 135 allocated_thread_pair_count++;
136 } 136 }
137 137
138 pr_debug("Spawned %d thread set(s) (%d total threads).\n", 138 pr_debug("Spawned %d thread set(s) (%d total threads).\n",
139 allocated_thread_pair_count, allocated_thread_pair_count * 2); 139 allocated_thread_pair_count, allocated_thread_pair_count * 2);
140 return allocated_thread_pair_count; 140 return allocated_thread_pair_count;
141 } 141 }
142 142
143 extern void iscsi_deallocate_thread_sets(void) 143 extern void iscsi_deallocate_thread_sets(void)
144 { 144 {
145 u32 released_count = 0; 145 u32 released_count = 0;
146 struct iscsi_thread_set *ts = NULL; 146 struct iscsi_thread_set *ts = NULL;
147 147
148 while ((ts = iscsi_get_ts_from_inactive_list())) { 148 while ((ts = iscsi_get_ts_from_inactive_list())) {
149 149
150 spin_lock_bh(&ts->ts_state_lock); 150 spin_lock_bh(&ts->ts_state_lock);
151 ts->status = ISCSI_THREAD_SET_DIE; 151 ts->status = ISCSI_THREAD_SET_DIE;
152 spin_unlock_bh(&ts->ts_state_lock); 152 spin_unlock_bh(&ts->ts_state_lock);
153 153
154 if (ts->rx_thread) { 154 if (ts->rx_thread) {
155 send_sig(SIGINT, ts->rx_thread, 1); 155 send_sig(SIGINT, ts->rx_thread, 1);
156 kthread_stop(ts->rx_thread); 156 kthread_stop(ts->rx_thread);
157 } 157 }
158 if (ts->tx_thread) { 158 if (ts->tx_thread) {
159 send_sig(SIGINT, ts->tx_thread, 1); 159 send_sig(SIGINT, ts->tx_thread, 1);
160 kthread_stop(ts->tx_thread); 160 kthread_stop(ts->tx_thread);
161 } 161 }
162 /* 162 /*
163 * Release this thread_id in the thread_set_bitmap 163 * Release this thread_id in the thread_set_bitmap
164 */ 164 */
165 spin_lock(&ts_bitmap_lock); 165 spin_lock(&ts_bitmap_lock);
166 bitmap_release_region(iscsit_global->ts_bitmap, 166 bitmap_release_region(iscsit_global->ts_bitmap,
167 ts->thread_id, get_order(1)); 167 ts->thread_id, get_order(1));
168 spin_unlock(&ts_bitmap_lock); 168 spin_unlock(&ts_bitmap_lock);
169 169
170 released_count++; 170 released_count++;
171 kfree(ts); 171 kfree(ts);
172 } 172 }
173 173
174 if (released_count) 174 if (released_count)
175 pr_debug("Stopped %d thread set(s) (%d total threads)." 175 pr_debug("Stopped %d thread set(s) (%d total threads)."
176 "\n", released_count, released_count * 2); 176 "\n", released_count, released_count * 2);
177 } 177 }
178 178
179 static void iscsi_deallocate_extra_thread_sets(void) 179 static void iscsi_deallocate_extra_thread_sets(void)
180 { 180 {
181 u32 orig_count, released_count = 0; 181 u32 orig_count, released_count = 0;
182 struct iscsi_thread_set *ts = NULL; 182 struct iscsi_thread_set *ts = NULL;
183 183
184 orig_count = TARGET_THREAD_SET_COUNT; 184 orig_count = TARGET_THREAD_SET_COUNT;
185 185
186 while ((iscsit_global->inactive_ts + 1) > orig_count) { 186 while ((iscsit_global->inactive_ts + 1) > orig_count) {
187 ts = iscsi_get_ts_from_inactive_list(); 187 ts = iscsi_get_ts_from_inactive_list();
188 if (!ts) 188 if (!ts)
189 break; 189 break;
190 190
191 spin_lock_bh(&ts->ts_state_lock); 191 spin_lock_bh(&ts->ts_state_lock);
192 ts->status = ISCSI_THREAD_SET_DIE; 192 ts->status = ISCSI_THREAD_SET_DIE;
193 spin_unlock_bh(&ts->ts_state_lock); 193 spin_unlock_bh(&ts->ts_state_lock);
194 194
195 if (ts->rx_thread) { 195 if (ts->rx_thread) {
196 send_sig(SIGINT, ts->rx_thread, 1); 196 send_sig(SIGINT, ts->rx_thread, 1);
197 kthread_stop(ts->rx_thread); 197 kthread_stop(ts->rx_thread);
198 } 198 }
199 if (ts->tx_thread) { 199 if (ts->tx_thread) {
200 send_sig(SIGINT, ts->tx_thread, 1); 200 send_sig(SIGINT, ts->tx_thread, 1);
201 kthread_stop(ts->tx_thread); 201 kthread_stop(ts->tx_thread);
202 } 202 }
203 /* 203 /*
204 * Release this thread_id in the thread_set_bitmap 204 * Release this thread_id in the thread_set_bitmap
205 */ 205 */
206 spin_lock(&ts_bitmap_lock); 206 spin_lock(&ts_bitmap_lock);
207 bitmap_release_region(iscsit_global->ts_bitmap, 207 bitmap_release_region(iscsit_global->ts_bitmap,
208 ts->thread_id, get_order(1)); 208 ts->thread_id, get_order(1));
209 spin_unlock(&ts_bitmap_lock); 209 spin_unlock(&ts_bitmap_lock);
210 210
211 released_count++; 211 released_count++;
212 kfree(ts); 212 kfree(ts);
213 } 213 }
214 214
215 if (released_count) { 215 if (released_count) {
216 pr_debug("Stopped %d thread set(s) (%d total threads)." 216 pr_debug("Stopped %d thread set(s) (%d total threads)."
217 "\n", released_count, released_count * 2); 217 "\n", released_count, released_count * 2);
218 } 218 }
219 } 219 }
220 220
221 void iscsi_activate_thread_set(struct iscsi_conn *conn, struct iscsi_thread_set *ts) 221 void iscsi_activate_thread_set(struct iscsi_conn *conn, struct iscsi_thread_set *ts)
222 { 222 {
223 iscsi_add_ts_to_active_list(ts); 223 iscsi_add_ts_to_active_list(ts);
224 224
225 spin_lock_bh(&ts->ts_state_lock); 225 spin_lock_bh(&ts->ts_state_lock);
226 conn->thread_set = ts; 226 conn->thread_set = ts;
227 ts->conn = conn; 227 ts->conn = conn;
228 spin_unlock_bh(&ts->ts_state_lock); 228 spin_unlock_bh(&ts->ts_state_lock);
229 /* 229 /*
230 * Start up the RX thread and wait on rx_post_start_comp. The RX 230 * Start up the RX thread and wait on rx_post_start_comp. The RX
231 * Thread will then do the same for the TX Thread in 231 * Thread will then do the same for the TX Thread in
232 * iscsi_rx_thread_pre_handler(). 232 * iscsi_rx_thread_pre_handler().
233 */ 233 */
234 complete(&ts->rx_start_comp); 234 complete(&ts->rx_start_comp);
235 wait_for_completion(&ts->rx_post_start_comp); 235 wait_for_completion(&ts->rx_post_start_comp);
236 } 236 }
237 237
238 struct iscsi_thread_set *iscsi_get_thread_set(void) 238 struct iscsi_thread_set *iscsi_get_thread_set(void)
239 { 239 {
240 int allocate_ts = 0; 240 int allocate_ts = 0;
241 struct completion comp; 241 struct completion comp;
242 struct iscsi_thread_set *ts = NULL; 242 struct iscsi_thread_set *ts = NULL;
243 /* 243 /*
244 * If no inactive thread set is available on the first call to 244 * If no inactive thread set is available on the first call to
245 * iscsi_get_ts_from_inactive_list(), sleep for a second and 245 * iscsi_get_ts_from_inactive_list(), sleep for a second and
246 * try again. If still none are available after two attempts, 246 * try again. If still none are available after two attempts,
247 * allocate a set ourselves. 247 * allocate a set ourselves.
248 */ 248 */
249 get_set: 249 get_set:
250 ts = iscsi_get_ts_from_inactive_list(); 250 ts = iscsi_get_ts_from_inactive_list();
251 if (!ts) { 251 if (!ts) {
252 if (allocate_ts == 2) 252 if (allocate_ts == 2)
253 iscsi_allocate_thread_sets(1); 253 iscsi_allocate_thread_sets(1);
254 254
255 init_completion(&comp); 255 init_completion(&comp);
256 wait_for_completion_timeout(&comp, 1 * HZ); 256 wait_for_completion_timeout(&comp, 1 * HZ);
257 257
258 allocate_ts++; 258 allocate_ts++;
259 goto get_set; 259 goto get_set;
260 } 260 }
261 261
262 ts->delay_inactive = 1; 262 ts->delay_inactive = 1;
263 ts->signal_sent = 0; 263 ts->signal_sent = 0;
264 ts->thread_count = 2; 264 ts->thread_count = 2;
265 init_completion(&ts->rx_restart_comp); 265 init_completion(&ts->rx_restart_comp);
266 init_completion(&ts->tx_restart_comp); 266 init_completion(&ts->tx_restart_comp);
267 267
268 return ts; 268 return ts;
269 } 269 }
270 270
271 void iscsi_set_thread_clear(struct iscsi_conn *conn, u8 thread_clear) 271 void iscsi_set_thread_clear(struct iscsi_conn *conn, u8 thread_clear)
272 { 272 {
273 struct iscsi_thread_set *ts = NULL; 273 struct iscsi_thread_set *ts = NULL;
274 274
275 if (!conn->thread_set) { 275 if (!conn->thread_set) {
276 pr_err("struct iscsi_conn->thread_set is NULL\n"); 276 pr_err("struct iscsi_conn->thread_set is NULL\n");
277 return; 277 return;
278 } 278 }
279 ts = conn->thread_set; 279 ts = conn->thread_set;
280 280
281 spin_lock_bh(&ts->ts_state_lock); 281 spin_lock_bh(&ts->ts_state_lock);
282 ts->thread_clear &= ~thread_clear; 282 ts->thread_clear &= ~thread_clear;
283 283
284 if ((thread_clear & ISCSI_CLEAR_RX_THREAD) && 284 if ((thread_clear & ISCSI_CLEAR_RX_THREAD) &&
285 (ts->blocked_threads & ISCSI_BLOCK_RX_THREAD)) 285 (ts->blocked_threads & ISCSI_BLOCK_RX_THREAD))
286 complete(&ts->rx_restart_comp); 286 complete(&ts->rx_restart_comp);
287 else if ((thread_clear & ISCSI_CLEAR_TX_THREAD) && 287 else if ((thread_clear & ISCSI_CLEAR_TX_THREAD) &&
288 (ts->blocked_threads & ISCSI_BLOCK_TX_THREAD)) 288 (ts->blocked_threads & ISCSI_BLOCK_TX_THREAD))
289 complete(&ts->tx_restart_comp); 289 complete(&ts->tx_restart_comp);
290 spin_unlock_bh(&ts->ts_state_lock); 290 spin_unlock_bh(&ts->ts_state_lock);
291 } 291 }
292 292
293 void iscsi_set_thread_set_signal(struct iscsi_conn *conn, u8 signal_sent) 293 void iscsi_set_thread_set_signal(struct iscsi_conn *conn, u8 signal_sent)
294 { 294 {
295 struct iscsi_thread_set *ts = NULL; 295 struct iscsi_thread_set *ts = NULL;
296 296
297 if (!conn->thread_set) { 297 if (!conn->thread_set) {
298 pr_err("struct iscsi_conn->thread_set is NULL\n"); 298 pr_err("struct iscsi_conn->thread_set is NULL\n");
299 return; 299 return;
300 } 300 }
301 ts = conn->thread_set; 301 ts = conn->thread_set;
302 302
303 spin_lock_bh(&ts->ts_state_lock); 303 spin_lock_bh(&ts->ts_state_lock);
304 ts->signal_sent |= signal_sent; 304 ts->signal_sent |= signal_sent;
305 spin_unlock_bh(&ts->ts_state_lock); 305 spin_unlock_bh(&ts->ts_state_lock);
306 } 306 }
307 307
308 int iscsi_release_thread_set(struct iscsi_conn *conn) 308 int iscsi_release_thread_set(struct iscsi_conn *conn)
309 { 309 {
310 int thread_called = 0; 310 int thread_called = 0;
311 struct iscsi_thread_set *ts = NULL; 311 struct iscsi_thread_set *ts = NULL;
312 312
313 if (!conn || !conn->thread_set) { 313 if (!conn || !conn->thread_set) {
314 pr_err("connection or thread set pointer is NULL\n"); 314 pr_err("connection or thread set pointer is NULL\n");
315 BUG(); 315 BUG();
316 } 316 }
317 ts = conn->thread_set; 317 ts = conn->thread_set;
318 318
319 spin_lock_bh(&ts->ts_state_lock); 319 spin_lock_bh(&ts->ts_state_lock);
320 ts->status = ISCSI_THREAD_SET_RESET; 320 ts->status = ISCSI_THREAD_SET_RESET;
321 321
322 if (!strncmp(current->comm, ISCSI_RX_THREAD_NAME, 322 if (!strncmp(current->comm, ISCSI_RX_THREAD_NAME,
323 strlen(ISCSI_RX_THREAD_NAME))) 323 strlen(ISCSI_RX_THREAD_NAME)))
324 thread_called = ISCSI_RX_THREAD; 324 thread_called = ISCSI_RX_THREAD;
325 else if (!strncmp(current->comm, ISCSI_TX_THREAD_NAME, 325 else if (!strncmp(current->comm, ISCSI_TX_THREAD_NAME,
326 strlen(ISCSI_TX_THREAD_NAME))) 326 strlen(ISCSI_TX_THREAD_NAME)))
327 thread_called = ISCSI_TX_THREAD; 327 thread_called = ISCSI_TX_THREAD;
328 328
329 if (ts->rx_thread && (thread_called == ISCSI_TX_THREAD) && 329 if (ts->rx_thread && (thread_called == ISCSI_TX_THREAD) &&
330 (ts->thread_clear & ISCSI_CLEAR_RX_THREAD)) { 330 (ts->thread_clear & ISCSI_CLEAR_RX_THREAD)) {
331 331
332 if (!(ts->signal_sent & ISCSI_SIGNAL_RX_THREAD)) { 332 if (!(ts->signal_sent & ISCSI_SIGNAL_RX_THREAD)) {
333 send_sig(SIGINT, ts->rx_thread, 1); 333 send_sig(SIGINT, ts->rx_thread, 1);
334 ts->signal_sent |= ISCSI_SIGNAL_RX_THREAD; 334 ts->signal_sent |= ISCSI_SIGNAL_RX_THREAD;
335 } 335 }
336 ts->blocked_threads |= ISCSI_BLOCK_RX_THREAD; 336 ts->blocked_threads |= ISCSI_BLOCK_RX_THREAD;
337 spin_unlock_bh(&ts->ts_state_lock); 337 spin_unlock_bh(&ts->ts_state_lock);
338 wait_for_completion(&ts->rx_restart_comp); 338 wait_for_completion(&ts->rx_restart_comp);
339 spin_lock_bh(&ts->ts_state_lock); 339 spin_lock_bh(&ts->ts_state_lock);
340 ts->blocked_threads &= ~ISCSI_BLOCK_RX_THREAD; 340 ts->blocked_threads &= ~ISCSI_BLOCK_RX_THREAD;
341 } 341 }
342 if (ts->tx_thread && (thread_called == ISCSI_RX_THREAD) && 342 if (ts->tx_thread && (thread_called == ISCSI_RX_THREAD) &&
343 (ts->thread_clear & ISCSI_CLEAR_TX_THREAD)) { 343 (ts->thread_clear & ISCSI_CLEAR_TX_THREAD)) {
344 344
345 if (!(ts->signal_sent & ISCSI_SIGNAL_TX_THREAD)) { 345 if (!(ts->signal_sent & ISCSI_SIGNAL_TX_THREAD)) {
346 send_sig(SIGINT, ts->tx_thread, 1); 346 send_sig(SIGINT, ts->tx_thread, 1);
347 ts->signal_sent |= ISCSI_SIGNAL_TX_THREAD; 347 ts->signal_sent |= ISCSI_SIGNAL_TX_THREAD;
348 } 348 }
349 ts->blocked_threads |= ISCSI_BLOCK_TX_THREAD; 349 ts->blocked_threads |= ISCSI_BLOCK_TX_THREAD;
350 spin_unlock_bh(&ts->ts_state_lock); 350 spin_unlock_bh(&ts->ts_state_lock);
351 wait_for_completion(&ts->tx_restart_comp); 351 wait_for_completion(&ts->tx_restart_comp);
352 spin_lock_bh(&ts->ts_state_lock); 352 spin_lock_bh(&ts->ts_state_lock);
353 ts->blocked_threads &= ~ISCSI_BLOCK_TX_THREAD; 353 ts->blocked_threads &= ~ISCSI_BLOCK_TX_THREAD;
354 } 354 }
355 355
356 ts->conn = NULL; 356 ts->conn = NULL;
357 ts->status = ISCSI_THREAD_SET_FREE; 357 ts->status = ISCSI_THREAD_SET_FREE;
358 spin_unlock_bh(&ts->ts_state_lock); 358 spin_unlock_bh(&ts->ts_state_lock);
359 359
360 return 0; 360 return 0;
361 } 361 }
362 362
363 int iscsi_thread_set_force_reinstatement(struct iscsi_conn *conn) 363 int iscsi_thread_set_force_reinstatement(struct iscsi_conn *conn)
364 { 364 {
365 struct iscsi_thread_set *ts; 365 struct iscsi_thread_set *ts;
366 366
367 if (!conn->thread_set) 367 if (!conn->thread_set)
368 return -1; 368 return -1;
369 ts = conn->thread_set; 369 ts = conn->thread_set;
370 370
371 spin_lock_bh(&ts->ts_state_lock); 371 spin_lock_bh(&ts->ts_state_lock);
372 if (ts->status != ISCSI_THREAD_SET_ACTIVE) { 372 if (ts->status != ISCSI_THREAD_SET_ACTIVE) {
373 spin_unlock_bh(&ts->ts_state_lock); 373 spin_unlock_bh(&ts->ts_state_lock);
374 return -1; 374 return -1;
375 } 375 }
376 376
377 if (ts->tx_thread && (!(ts->signal_sent & ISCSI_SIGNAL_TX_THREAD))) { 377 if (ts->tx_thread && (!(ts->signal_sent & ISCSI_SIGNAL_TX_THREAD))) {
378 send_sig(SIGINT, ts->tx_thread, 1); 378 send_sig(SIGINT, ts->tx_thread, 1);
379 ts->signal_sent |= ISCSI_SIGNAL_TX_THREAD; 379 ts->signal_sent |= ISCSI_SIGNAL_TX_THREAD;
380 } 380 }
381 if (ts->rx_thread && (!(ts->signal_sent & ISCSI_SIGNAL_RX_THREAD))) { 381 if (ts->rx_thread && (!(ts->signal_sent & ISCSI_SIGNAL_RX_THREAD))) {
382 send_sig(SIGINT, ts->rx_thread, 1); 382 send_sig(SIGINT, ts->rx_thread, 1);
383 ts->signal_sent |= ISCSI_SIGNAL_RX_THREAD; 383 ts->signal_sent |= ISCSI_SIGNAL_RX_THREAD;
384 } 384 }
385 spin_unlock_bh(&ts->ts_state_lock); 385 spin_unlock_bh(&ts->ts_state_lock);
386 386
387 return 0; 387 return 0;
388 } 388 }
389 389
390 static void iscsi_check_to_add_additional_sets(void) 390 static void iscsi_check_to_add_additional_sets(void)
391 { 391 {
392 int thread_sets_add; 392 int thread_sets_add;
393 393
394 spin_lock(&inactive_ts_lock); 394 spin_lock(&inactive_ts_lock);
395 thread_sets_add = iscsit_global->inactive_ts; 395 thread_sets_add = iscsit_global->inactive_ts;
396 spin_unlock(&inactive_ts_lock); 396 spin_unlock(&inactive_ts_lock);
397 if (thread_sets_add == 1) 397 if (thread_sets_add == 1)
398 iscsi_allocate_thread_sets(1); 398 iscsi_allocate_thread_sets(1);
399 } 399 }
400 400
401 static int iscsi_signal_thread_pre_handler(struct iscsi_thread_set *ts) 401 static int iscsi_signal_thread_pre_handler(struct iscsi_thread_set *ts)
402 { 402 {
403 spin_lock_bh(&ts->ts_state_lock); 403 spin_lock_bh(&ts->ts_state_lock);
404 if ((ts->status == ISCSI_THREAD_SET_DIE) || signal_pending(current)) { 404 if ((ts->status == ISCSI_THREAD_SET_DIE) || signal_pending(current)) {
405 spin_unlock_bh(&ts->ts_state_lock); 405 spin_unlock_bh(&ts->ts_state_lock);
406 return -1; 406 return -1;
407 } 407 }
408 spin_unlock_bh(&ts->ts_state_lock); 408 spin_unlock_bh(&ts->ts_state_lock);
409 409
410 return 0; 410 return 0;
411 } 411 }
412 412
413 struct iscsi_conn *iscsi_rx_thread_pre_handler(struct iscsi_thread_set *ts) 413 struct iscsi_conn *iscsi_rx_thread_pre_handler(struct iscsi_thread_set *ts)
414 { 414 {
415 int ret; 415 int ret;
416 416
417 spin_lock_bh(&ts->ts_state_lock); 417 spin_lock_bh(&ts->ts_state_lock);
418 if (ts->create_threads) { 418 if (ts->create_threads) {
419 spin_unlock_bh(&ts->ts_state_lock); 419 spin_unlock_bh(&ts->ts_state_lock);
420 goto sleep; 420 goto sleep;
421 } 421 }
422 422
423 flush_signals(current); 423 flush_signals(current);
424 424
425 if (ts->delay_inactive && (--ts->thread_count == 0)) { 425 if (ts->delay_inactive && (--ts->thread_count == 0)) {
426 spin_unlock_bh(&ts->ts_state_lock); 426 spin_unlock_bh(&ts->ts_state_lock);
427 iscsi_del_ts_from_active_list(ts); 427 iscsi_del_ts_from_active_list(ts);
428 428
429 if (!iscsit_global->in_shutdown) 429 if (!iscsit_global->in_shutdown)
430 iscsi_deallocate_extra_thread_sets(); 430 iscsi_deallocate_extra_thread_sets();
431 431
432 iscsi_add_ts_to_inactive_list(ts); 432 iscsi_add_ts_to_inactive_list(ts);
433 spin_lock_bh(&ts->ts_state_lock); 433 spin_lock_bh(&ts->ts_state_lock);
434 } 434 }
435 435
436 if ((ts->status == ISCSI_THREAD_SET_RESET) && 436 if ((ts->status == ISCSI_THREAD_SET_RESET) &&
437 (ts->thread_clear & ISCSI_CLEAR_RX_THREAD)) 437 (ts->thread_clear & ISCSI_CLEAR_RX_THREAD))
438 complete(&ts->rx_restart_comp); 438 complete(&ts->rx_restart_comp);
439 439
440 ts->thread_clear &= ~ISCSI_CLEAR_RX_THREAD; 440 ts->thread_clear &= ~ISCSI_CLEAR_RX_THREAD;
441 spin_unlock_bh(&ts->ts_state_lock); 441 spin_unlock_bh(&ts->ts_state_lock);
442 sleep: 442 sleep:
443 ret = wait_for_completion_interruptible(&ts->rx_start_comp); 443 ret = wait_for_completion_interruptible(&ts->rx_start_comp);
444 if (ret != 0) 444 if (ret != 0)
445 return NULL; 445 return NULL;
446 446
447 if (iscsi_signal_thread_pre_handler(ts) < 0) 447 if (iscsi_signal_thread_pre_handler(ts) < 0)
448 return NULL; 448 return NULL;
449 449
450 if (!ts->conn) { 450 if (!ts->conn) {
451 pr_err("struct iscsi_thread_set->conn is NULL for" 451 pr_err("struct iscsi_thread_set->conn is NULL for"
452 " thread_id: %d, going back to sleep\n", ts->thread_id); 452 " thread_id: %d, going back to sleep\n", ts->thread_id);
453 goto sleep; 453 goto sleep;
454 } 454 }
455 iscsi_check_to_add_additional_sets(); 455 iscsi_check_to_add_additional_sets();
456 /* 456 /*
457 * The RX Thread starts up the TX Thread and sleeps. 457 * The RX Thread starts up the TX Thread and sleeps.
458 */ 458 */
459 ts->thread_clear |= ISCSI_CLEAR_RX_THREAD; 459 ts->thread_clear |= ISCSI_CLEAR_RX_THREAD;
460 complete(&ts->tx_start_comp); 460 complete(&ts->tx_start_comp);
461 wait_for_completion(&ts->tx_post_start_comp); 461 wait_for_completion(&ts->tx_post_start_comp);
462 462
463 return ts->conn; 463 return ts->conn;
464 } 464 }
465 465
466 struct iscsi_conn *iscsi_tx_thread_pre_handler(struct iscsi_thread_set *ts) 466 struct iscsi_conn *iscsi_tx_thread_pre_handler(struct iscsi_thread_set *ts)
467 { 467 {
468 int ret; 468 int ret;
469 469
470 spin_lock_bh(&ts->ts_state_lock); 470 spin_lock_bh(&ts->ts_state_lock);
471 if (ts->create_threads) { 471 if (ts->create_threads) {
472 spin_unlock_bh(&ts->ts_state_lock); 472 spin_unlock_bh(&ts->ts_state_lock);
473 goto sleep; 473 goto sleep;
474 } 474 }
475 475
476 flush_signals(current); 476 flush_signals(current);
477 477
478 if (ts->delay_inactive && (--ts->thread_count == 0)) { 478 if (ts->delay_inactive && (--ts->thread_count == 0)) {
479 spin_unlock_bh(&ts->ts_state_lock); 479 spin_unlock_bh(&ts->ts_state_lock);
480 iscsi_del_ts_from_active_list(ts); 480 iscsi_del_ts_from_active_list(ts);
481 481
482 if (!iscsit_global->in_shutdown) 482 if (!iscsit_global->in_shutdown)
483 iscsi_deallocate_extra_thread_sets(); 483 iscsi_deallocate_extra_thread_sets();
484 484
485 iscsi_add_ts_to_inactive_list(ts); 485 iscsi_add_ts_to_inactive_list(ts);
486 spin_lock_bh(&ts->ts_state_lock); 486 spin_lock_bh(&ts->ts_state_lock);
487 } 487 }
488 if ((ts->status == ISCSI_THREAD_SET_RESET) && 488 if ((ts->status == ISCSI_THREAD_SET_RESET) &&
489 (ts->thread_clear & ISCSI_CLEAR_TX_THREAD)) 489 (ts->thread_clear & ISCSI_CLEAR_TX_THREAD))
490 complete(&ts->tx_restart_comp); 490 complete(&ts->tx_restart_comp);
491 491
492 ts->thread_clear &= ~ISCSI_CLEAR_TX_THREAD; 492 ts->thread_clear &= ~ISCSI_CLEAR_TX_THREAD;
493 spin_unlock_bh(&ts->ts_state_lock); 493 spin_unlock_bh(&ts->ts_state_lock);
494 sleep: 494 sleep:
495 ret = wait_for_completion_interruptible(&ts->tx_start_comp); 495 ret = wait_for_completion_interruptible(&ts->tx_start_comp);
496 if (ret != 0) 496 if (ret != 0)
497 return NULL; 497 return NULL;
498 498
499 if (iscsi_signal_thread_pre_handler(ts) < 0) 499 if (iscsi_signal_thread_pre_handler(ts) < 0)
500 return NULL; 500 return NULL;
501 501
502 if (!ts->conn) { 502 if (!ts->conn) {
503 pr_err("struct iscsi_thread_set->conn is NULL for " 503 pr_err("struct iscsi_thread_set->conn is NULL for "
504 " thread_id: %d, going back to sleep\n", 504 " thread_id: %d, going back to sleep\n",
505 ts->thread_id); 505 ts->thread_id);
506 goto sleep; 506 goto sleep;
507 } 507 }
508 508
509 iscsi_check_to_add_additional_sets(); 509 iscsi_check_to_add_additional_sets();
510 /* 510 /*
511 * From the TX thread, up the tx_post_start_comp that the RX Thread is 511 * From the TX thread, up the tx_post_start_comp that the RX Thread is
512 * sleeping on in iscsi_rx_thread_pre_handler(), then up the 512 * sleeping on in iscsi_rx_thread_pre_handler(), then up the
513 * rx_post_start_comp that iscsi_activate_thread_set() is sleeping on. 513 * rx_post_start_comp that iscsi_activate_thread_set() is sleeping on.
514 */ 514 */
515 ts->thread_clear |= ISCSI_CLEAR_TX_THREAD; 515 ts->thread_clear |= ISCSI_CLEAR_TX_THREAD;
516 complete(&ts->tx_post_start_comp); 516 complete(&ts->tx_post_start_comp);
517 complete(&ts->rx_post_start_comp); 517 complete(&ts->rx_post_start_comp);
518 518
519 spin_lock_bh(&ts->ts_state_lock); 519 spin_lock_bh(&ts->ts_state_lock);
520 ts->status = ISCSI_THREAD_SET_ACTIVE; 520 ts->status = ISCSI_THREAD_SET_ACTIVE;
521 spin_unlock_bh(&ts->ts_state_lock); 521 spin_unlock_bh(&ts->ts_state_lock);
522 522
523 return ts->conn; 523 return ts->conn;
524 } 524 }
525 525
526 int iscsi_thread_set_init(void) 526 int iscsi_thread_set_init(void)
527 { 527 {
528 int size; 528 int size;
529 529
530 iscsit_global->ts_bitmap_count = ISCSI_TS_BITMAP_BITS; 530 iscsit_global->ts_bitmap_count = ISCSI_TS_BITMAP_BITS;
531 531
532 size = BITS_TO_LONGS(iscsit_global->ts_bitmap_count) * sizeof(long); 532 size = BITS_TO_LONGS(iscsit_global->ts_bitmap_count) * sizeof(long);
533 iscsit_global->ts_bitmap = kzalloc(size, GFP_KERNEL); 533 iscsit_global->ts_bitmap = kzalloc(size, GFP_KERNEL);
534 if (!iscsit_global->ts_bitmap) { 534 if (!iscsit_global->ts_bitmap) {
535 pr_err("Unable to allocate iscsit_global->ts_bitmap\n"); 535 pr_err("Unable to allocate iscsit_global->ts_bitmap\n");
536 return -ENOMEM; 536 return -ENOMEM;
537 } 537 }
538 538
539 spin_lock_init(&active_ts_lock);
540 spin_lock_init(&inactive_ts_lock);
541 spin_lock_init(&ts_bitmap_lock);
542 INIT_LIST_HEAD(&active_ts_list);
543 INIT_LIST_HEAD(&inactive_ts_list);
544
545 return 0; 539 return 0;
546 } 540 }
547 541
548 void iscsi_thread_set_free(void) 542 void iscsi_thread_set_free(void)
549 { 543 {
550 kfree(iscsit_global->ts_bitmap); 544 kfree(iscsit_global->ts_bitmap);
551 } 545 }
552 546
drivers/target/target_core_configfs.c
Diff comments   View file @ d0f474e
1 /******************************************************************************* 1 /*******************************************************************************
2 * Filename: target_core_configfs.c 2 * Filename: target_core_configfs.c
3 * 3 *
4 * This file contains ConfigFS logic for the Generic Target Engine project. 4 * This file contains ConfigFS logic for the Generic Target Engine project.
5 * 5 *
6 * Copyright (c) 2008-2011 Rising Tide Systems 6 * Copyright (c) 2008-2011 Rising Tide Systems
7 * Copyright (c) 2008-2011 Linux-iSCSI.org 7 * Copyright (c) 2008-2011 Linux-iSCSI.org
8 * 8 *
9 * Nicholas A. Bellinger <nab@kernel.org> 9 * Nicholas A. Bellinger <nab@kernel.org>
10 * 10 *
11 * based on configfs Copyright (C) 2005 Oracle. All rights reserved. 11 * based on configfs Copyright (C) 2005 Oracle. All rights reserved.
12 * 12 *
13 * This program is free software; you can redistribute it and/or modify 13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by 14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2 of the License, or 15 * the Free Software Foundation; either version 2 of the License, or
16 * (at your option) any later version. 16 * (at your option) any later version.
17 * 17 *
18 * This program is distributed in the hope that it will be useful, 18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of 19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details. 21 * GNU General Public License for more details.
22 ****************************************************************************/ 22 ****************************************************************************/
23 23
24 #include <linux/module.h> 24 #include <linux/module.h>
25 #include <linux/moduleparam.h> 25 #include <linux/moduleparam.h>
26 #include <generated/utsrelease.h> 26 #include <generated/utsrelease.h>
27 #include <linux/utsname.h> 27 #include <linux/utsname.h>
28 #include <linux/init.h> 28 #include <linux/init.h>
29 #include <linux/fs.h> 29 #include <linux/fs.h>
30 #include <linux/namei.h> 30 #include <linux/namei.h>
31 #include <linux/slab.h> 31 #include <linux/slab.h>
32 #include <linux/types.h> 32 #include <linux/types.h>
33 #include <linux/delay.h> 33 #include <linux/delay.h>
34 #include <linux/unistd.h> 34 #include <linux/unistd.h>
35 #include <linux/string.h> 35 #include <linux/string.h>
36 #include <linux/parser.h> 36 #include <linux/parser.h>
37 #include <linux/syscalls.h> 37 #include <linux/syscalls.h>
38 #include <linux/configfs.h> 38 #include <linux/configfs.h>
39 #include <linux/spinlock.h> 39 #include <linux/spinlock.h>
40 40
41 #include <target/target_core_base.h> 41 #include <target/target_core_base.h>
42 #include <target/target_core_backend.h> 42 #include <target/target_core_backend.h>
43 #include <target/target_core_fabric.h> 43 #include <target/target_core_fabric.h>
44 #include <target/target_core_fabric_configfs.h> 44 #include <target/target_core_fabric_configfs.h>
45 #include <target/target_core_configfs.h> 45 #include <target/target_core_configfs.h>
46 #include <target/configfs_macros.h> 46 #include <target/configfs_macros.h>
47 47
48 #include "target_core_internal.h" 48 #include "target_core_internal.h"
49 #include "target_core_alua.h" 49 #include "target_core_alua.h"
50 #include "target_core_pr.h" 50 #include "target_core_pr.h"
51 #include "target_core_rd.h" 51 #include "target_core_rd.h"
52 52
53 extern struct t10_alua_lu_gp *default_lu_gp; 53 extern struct t10_alua_lu_gp *default_lu_gp;
54 54
55 static struct list_head g_tf_list; 55 static LIST_HEAD(g_tf_list);
56 static struct mutex g_tf_lock; 56 static DEFINE_MUTEX(g_tf_lock);
57 57
58 struct target_core_configfs_attribute { 58 struct target_core_configfs_attribute {
59 struct configfs_attribute attr; 59 struct configfs_attribute attr;
60 ssize_t (*show)(void *, char *); 60 ssize_t (*show)(void *, char *);
61 ssize_t (*store)(void *, const char *, size_t); 61 ssize_t (*store)(void *, const char *, size_t);
62 }; 62 };
63 63
64 static struct config_group target_core_hbagroup; 64 static struct config_group target_core_hbagroup;
65 static struct config_group alua_group; 65 static struct config_group alua_group;
66 static struct config_group alua_lu_gps_group; 66 static struct config_group alua_lu_gps_group;
67 67
68 static inline struct se_hba * 68 static inline struct se_hba *
69 item_to_hba(struct config_item *item) 69 item_to_hba(struct config_item *item)
70 { 70 {
71 return container_of(to_config_group(item), struct se_hba, hba_group); 71 return container_of(to_config_group(item), struct se_hba, hba_group);
72 } 72 }
73 73
74 /* 74 /*
75 * Attributes for /sys/kernel/config/target/ 75 * Attributes for /sys/kernel/config/target/
76 */ 76 */
77 static ssize_t target_core_attr_show(struct config_item *item, 77 static ssize_t target_core_attr_show(struct config_item *item,
78 struct configfs_attribute *attr, 78 struct configfs_attribute *attr,
79 char *page) 79 char *page)
80 { 80 {
81 return sprintf(page, "Target Engine Core ConfigFS Infrastructure %s" 81 return sprintf(page, "Target Engine Core ConfigFS Infrastructure %s"
82 " on %s/%s on "UTS_RELEASE"\n", TARGET_CORE_CONFIGFS_VERSION, 82 " on %s/%s on "UTS_RELEASE"\n", TARGET_CORE_CONFIGFS_VERSION,
83 utsname()->sysname, utsname()->machine); 83 utsname()->sysname, utsname()->machine);
84 } 84 }
85 85
86 static struct configfs_item_operations target_core_fabric_item_ops = { 86 static struct configfs_item_operations target_core_fabric_item_ops = {
87 .show_attribute = target_core_attr_show, 87 .show_attribute = target_core_attr_show,
88 }; 88 };
89 89
90 static struct configfs_attribute target_core_item_attr_version = { 90 static struct configfs_attribute target_core_item_attr_version = {
91 .ca_owner = THIS_MODULE, 91 .ca_owner = THIS_MODULE,
92 .ca_name = "version", 92 .ca_name = "version",
93 .ca_mode = S_IRUGO, 93 .ca_mode = S_IRUGO,
94 }; 94 };
95 95
96 static struct target_fabric_configfs *target_core_get_fabric( 96 static struct target_fabric_configfs *target_core_get_fabric(
97 const char *name) 97 const char *name)
98 { 98 {
99 struct target_fabric_configfs *tf; 99 struct target_fabric_configfs *tf;
100 100
101 if (!name) 101 if (!name)
102 return NULL; 102 return NULL;
103 103
104 mutex_lock(&g_tf_lock); 104 mutex_lock(&g_tf_lock);
105 list_for_each_entry(tf, &g_tf_list, tf_list) { 105 list_for_each_entry(tf, &g_tf_list, tf_list) {
106 if (!strcmp(tf->tf_name, name)) { 106 if (!strcmp(tf->tf_name, name)) {
107 atomic_inc(&tf->tf_access_cnt); 107 atomic_inc(&tf->tf_access_cnt);
108 mutex_unlock(&g_tf_lock); 108 mutex_unlock(&g_tf_lock);
109 return tf; 109 return tf;
110 } 110 }
111 } 111 }
112 mutex_unlock(&g_tf_lock); 112 mutex_unlock(&g_tf_lock);
113 113
114 return NULL; 114 return NULL;
115 } 115 }
116 116
117 /* 117 /*
118 * Called from struct target_core_group_ops->make_group() 118 * Called from struct target_core_group_ops->make_group()
119 */ 119 */
120 static struct config_group *target_core_register_fabric( 120 static struct config_group *target_core_register_fabric(
121 struct config_group *group, 121 struct config_group *group,
122 const char *name) 122 const char *name)
123 { 123 {
124 struct target_fabric_configfs *tf; 124 struct target_fabric_configfs *tf;
125 int ret; 125 int ret;
126 126
127 pr_debug("Target_Core_ConfigFS: REGISTER -> group: %p name:" 127 pr_debug("Target_Core_ConfigFS: REGISTER -> group: %p name:"
128 " %s\n", group, name); 128 " %s\n", group, name);
129 /* 129 /*
130 * Below are some hardcoded request_module() calls to automatically 130 * Below are some hardcoded request_module() calls to automatically
131 * local fabric modules when the following is called: 131 * local fabric modules when the following is called:
132 * 132 *
133 * mkdir -p /sys/kernel/config/target/$MODULE_NAME 133 * mkdir -p /sys/kernel/config/target/$MODULE_NAME
134 * 134 *
135 * Note that this does not limit which TCM fabric module can be 135 * Note that this does not limit which TCM fabric module can be
136 * registered, but simply provids auto loading logic for modules with 136 * registered, but simply provids auto loading logic for modules with
137 * mkdir(2) system calls with known TCM fabric modules. 137 * mkdir(2) system calls with known TCM fabric modules.
138 */ 138 */
139 if (!strncmp(name, "iscsi", 5)) { 139 if (!strncmp(name, "iscsi", 5)) {
140 /* 140 /*
141 * Automatically load the LIO Target fabric module when the 141 * Automatically load the LIO Target fabric module when the
142 * following is called: 142 * following is called:
143 * 143 *
144 * mkdir -p $CONFIGFS/target/iscsi 144 * mkdir -p $CONFIGFS/target/iscsi
145 */ 145 */
146 ret = request_module("iscsi_target_mod"); 146 ret = request_module("iscsi_target_mod");
147 if (ret < 0) { 147 if (ret < 0) {
148 pr_err("request_module() failed for" 148 pr_err("request_module() failed for"
149 " iscsi_target_mod.ko: %d\n", ret); 149 " iscsi_target_mod.ko: %d\n", ret);
150 return ERR_PTR(-EINVAL); 150 return ERR_PTR(-EINVAL);
151 } 151 }
152 } else if (!strncmp(name, "loopback", 8)) { 152 } else if (!strncmp(name, "loopback", 8)) {
153 /* 153 /*
154 * Automatically load the tcm_loop fabric module when the 154 * Automatically load the tcm_loop fabric module when the
155 * following is called: 155 * following is called:
156 * 156 *
157 * mkdir -p $CONFIGFS/target/loopback 157 * mkdir -p $CONFIGFS/target/loopback
158 */ 158 */
159 ret = request_module("tcm_loop"); 159 ret = request_module("tcm_loop");
160 if (ret < 0) { 160 if (ret < 0) {
161 pr_err("request_module() failed for" 161 pr_err("request_module() failed for"
162 " tcm_loop.ko: %d\n", ret); 162 " tcm_loop.ko: %d\n", ret);
163 return ERR_PTR(-EINVAL); 163 return ERR_PTR(-EINVAL);
164 } 164 }
165 } 165 }
166 166
167 tf = target_core_get_fabric(name); 167 tf = target_core_get_fabric(name);
168 if (!tf) { 168 if (!tf) {
169 pr_err("target_core_get_fabric() failed for %s\n", 169 pr_err("target_core_get_fabric() failed for %s\n",
170 name); 170 name);
171 return ERR_PTR(-EINVAL); 171 return ERR_PTR(-EINVAL);
172 } 172 }
173 pr_debug("Target_Core_ConfigFS: REGISTER -> Located fabric:" 173 pr_debug("Target_Core_ConfigFS: REGISTER -> Located fabric:"
174 " %s\n", tf->tf_name); 174 " %s\n", tf->tf_name);
175 /* 175 /*
176 * On a successful target_core_get_fabric() look, the returned 176 * On a successful target_core_get_fabric() look, the returned
177 * struct target_fabric_configfs *tf will contain a usage reference. 177 * struct target_fabric_configfs *tf will contain a usage reference.
178 */ 178 */
179 pr_debug("Target_Core_ConfigFS: REGISTER tfc_wwn_cit -> %p\n", 179 pr_debug("Target_Core_ConfigFS: REGISTER tfc_wwn_cit -> %p\n",
180 &TF_CIT_TMPL(tf)->tfc_wwn_cit); 180 &TF_CIT_TMPL(tf)->tfc_wwn_cit);
181 181
182 tf->tf_group.default_groups = tf->tf_default_groups; 182 tf->tf_group.default_groups = tf->tf_default_groups;
183 tf->tf_group.default_groups[0] = &tf->tf_disc_group; 183 tf->tf_group.default_groups[0] = &tf->tf_disc_group;
184 tf->tf_group.default_groups[1] = NULL; 184 tf->tf_group.default_groups[1] = NULL;
185 185
186 config_group_init_type_name(&tf->tf_group, name, 186 config_group_init_type_name(&tf->tf_group, name,
187 &TF_CIT_TMPL(tf)->tfc_wwn_cit); 187 &TF_CIT_TMPL(tf)->tfc_wwn_cit);
188 config_group_init_type_name(&tf->tf_disc_group, "discovery_auth", 188 config_group_init_type_name(&tf->tf_disc_group, "discovery_auth",
189 &TF_CIT_TMPL(tf)->tfc_discovery_cit); 189 &TF_CIT_TMPL(tf)->tfc_discovery_cit);
190 190
191 pr_debug("Target_Core_ConfigFS: REGISTER -> Allocated Fabric:" 191 pr_debug("Target_Core_ConfigFS: REGISTER -> Allocated Fabric:"
192 " %s\n", tf->tf_group.cg_item.ci_name); 192 " %s\n", tf->tf_group.cg_item.ci_name);
193 /* 193 /*
194 * Setup tf_ops.tf_subsys pointer for usage with configfs_depend_item() 194 * Setup tf_ops.tf_subsys pointer for usage with configfs_depend_item()
195 */ 195 */
196 tf->tf_ops.tf_subsys = tf->tf_subsys; 196 tf->tf_ops.tf_subsys = tf->tf_subsys;
197 tf->tf_fabric = &tf->tf_group.cg_item; 197 tf->tf_fabric = &tf->tf_group.cg_item;
198 pr_debug("Target_Core_ConfigFS: REGISTER -> Set tf->tf_fabric" 198 pr_debug("Target_Core_ConfigFS: REGISTER -> Set tf->tf_fabric"
199 " for %s\n", name); 199 " for %s\n", name);
200 200
201 return &tf->tf_group; 201 return &tf->tf_group;
202 } 202 }
203 203
204 /* 204 /*
205 * Called from struct target_core_group_ops->drop_item() 205 * Called from struct target_core_group_ops->drop_item()
206 */ 206 */
207 static void target_core_deregister_fabric( 207 static void target_core_deregister_fabric(
208 struct config_group *group, 208 struct config_group *group,
209 struct config_item *item) 209 struct config_item *item)
210 { 210 {
211 struct target_fabric_configfs *tf = container_of( 211 struct target_fabric_configfs *tf = container_of(
212 to_config_group(item), struct target_fabric_configfs, tf_group); 212 to_config_group(item), struct target_fabric_configfs, tf_group);
213 struct config_group *tf_group; 213 struct config_group *tf_group;
214 struct config_item *df_item; 214 struct config_item *df_item;
215 int i; 215 int i;
216 216
217 pr_debug("Target_Core_ConfigFS: DEREGISTER -> Looking up %s in" 217 pr_debug("Target_Core_ConfigFS: DEREGISTER -> Looking up %s in"
218 " tf list\n", config_item_name(item)); 218 " tf list\n", config_item_name(item));
219 219
220 pr_debug("Target_Core_ConfigFS: DEREGISTER -> located fabric:" 220 pr_debug("Target_Core_ConfigFS: DEREGISTER -> located fabric:"
221 " %s\n", tf->tf_name); 221 " %s\n", tf->tf_name);
222 atomic_dec(&tf->tf_access_cnt); 222 atomic_dec(&tf->tf_access_cnt);
223 223
224 pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing" 224 pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing"
225 " tf->tf_fabric for %s\n", tf->tf_name); 225 " tf->tf_fabric for %s\n", tf->tf_name);
226 tf->tf_fabric = NULL; 226 tf->tf_fabric = NULL;
227 227
228 pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing ci" 228 pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing ci"
229 " %s\n", config_item_name(item)); 229 " %s\n", config_item_name(item));
230 230
231 tf_group = &tf->tf_group; 231 tf_group = &tf->tf_group;
232 for (i = 0; tf_group->default_groups[i]; i++) { 232 for (i = 0; tf_group->default_groups[i]; i++) {
233 df_item = &tf_group->default_groups[i]->cg_item; 233 df_item = &tf_group->default_groups[i]->cg_item;
234 tf_group->default_groups[i] = NULL; 234 tf_group->default_groups[i] = NULL;
235 config_item_put(df_item); 235 config_item_put(df_item);
236 } 236 }
237 config_item_put(item); 237 config_item_put(item);
238 } 238 }
239 239
240 static struct configfs_group_operations target_core_fabric_group_ops = { 240 static struct configfs_group_operations target_core_fabric_group_ops = {
241 .make_group = &target_core_register_fabric, 241 .make_group = &target_core_register_fabric,
242 .drop_item = &target_core_deregister_fabric, 242 .drop_item = &target_core_deregister_fabric,
243 }; 243 };
244 244
245 /* 245 /*
246 * All item attributes appearing in /sys/kernel/target/ appear here. 246 * All item attributes appearing in /sys/kernel/target/ appear here.
247 */ 247 */
248 static struct configfs_attribute *target_core_fabric_item_attrs[] = { 248 static struct configfs_attribute *target_core_fabric_item_attrs[] = {
249 &target_core_item_attr_version, 249 &target_core_item_attr_version,
250 NULL, 250 NULL,
251 }; 251 };
252 252
253 /* 253 /*
254 * Provides Fabrics Groups and Item Attributes for /sys/kernel/config/target/ 254 * Provides Fabrics Groups and Item Attributes for /sys/kernel/config/target/
255 */ 255 */
256 static struct config_item_type target_core_fabrics_item = { 256 static struct config_item_type target_core_fabrics_item = {
257 .ct_item_ops = &target_core_fabric_item_ops, 257 .ct_item_ops = &target_core_fabric_item_ops,
258 .ct_group_ops = &target_core_fabric_group_ops, 258 .ct_group_ops = &target_core_fabric_group_ops,
259 .ct_attrs = target_core_fabric_item_attrs, 259 .ct_attrs = target_core_fabric_item_attrs,
260 .ct_owner = THIS_MODULE, 260 .ct_owner = THIS_MODULE,
261 }; 261 };
262 262
263 static struct configfs_subsystem target_core_fabrics = { 263 static struct configfs_subsystem target_core_fabrics = {
264 .su_group = { 264 .su_group = {
265 .cg_item = { 265 .cg_item = {
266 .ci_namebuf = "target", 266 .ci_namebuf = "target",
267 .ci_type = &target_core_fabrics_item, 267 .ci_type = &target_core_fabrics_item,
268 }, 268 },
269 }, 269 },
270 }; 270 };
271 271
272 static struct configfs_subsystem *target_core_subsystem[] = { 272 static struct configfs_subsystem *target_core_subsystem[] = {
273 &target_core_fabrics, 273 &target_core_fabrics,
274 NULL, 274 NULL,
275 }; 275 };
276 276
277 /*############################################################################## 277 /*##############################################################################
278 // Start functions called by external Target Fabrics Modules 278 // Start functions called by external Target Fabrics Modules
279 //############################################################################*/ 279 //############################################################################*/
280 280
281 /* 281 /*
282 * First function called by fabric modules to: 282 * First function called by fabric modules to:
283 * 283 *
284 * 1) Allocate a struct target_fabric_configfs and save the *fabric_cit pointer. 284 * 1) Allocate a struct target_fabric_configfs and save the *fabric_cit pointer.
285 * 2) Add struct target_fabric_configfs to g_tf_list 285 * 2) Add struct target_fabric_configfs to g_tf_list
286 * 3) Return struct target_fabric_configfs to fabric module to be passed 286 * 3) Return struct target_fabric_configfs to fabric module to be passed
287 * into target_fabric_configfs_register(). 287 * into target_fabric_configfs_register().
288 */ 288 */
289 struct target_fabric_configfs *target_fabric_configfs_init( 289 struct target_fabric_configfs *target_fabric_configfs_init(
290 struct module *fabric_mod, 290 struct module *fabric_mod,
291 const char *name) 291 const char *name)
292 { 292 {
293 struct target_fabric_configfs *tf; 293 struct target_fabric_configfs *tf;
294 294
295 if (!(name)) { 295 if (!(name)) {
296 pr_err("Unable to locate passed fabric name\n"); 296 pr_err("Unable to locate passed fabric name\n");
297 return ERR_PTR(-EINVAL); 297 return ERR_PTR(-EINVAL);
298 } 298 }
299 if (strlen(name) >= TARGET_FABRIC_NAME_SIZE) { 299 if (strlen(name) >= TARGET_FABRIC_NAME_SIZE) {
300 pr_err("Passed name: %s exceeds TARGET_FABRIC" 300 pr_err("Passed name: %s exceeds TARGET_FABRIC"
301 "_NAME_SIZE\n", name); 301 "_NAME_SIZE\n", name);
302 return ERR_PTR(-EINVAL); 302 return ERR_PTR(-EINVAL);
303 } 303 }
304 304
305 tf = kzalloc(sizeof(struct target_fabric_configfs), GFP_KERNEL); 305 tf = kzalloc(sizeof(struct target_fabric_configfs), GFP_KERNEL);
306 if (!tf) 306 if (!tf)
307 return ERR_PTR(-ENOMEM); 307 return ERR_PTR(-ENOMEM);
308 308
309 INIT_LIST_HEAD(&tf->tf_list); 309 INIT_LIST_HEAD(&tf->tf_list);
310 atomic_set(&tf->tf_access_cnt, 0); 310 atomic_set(&tf->tf_access_cnt, 0);
311 /* 311 /*
312 * Setup the default generic struct config_item_type's (cits) in 312 * Setup the default generic struct config_item_type's (cits) in
313 * struct target_fabric_configfs->tf_cit_tmpl 313 * struct target_fabric_configfs->tf_cit_tmpl
314 */ 314 */
315 tf->tf_module = fabric_mod; 315 tf->tf_module = fabric_mod;
316 target_fabric_setup_cits(tf); 316 target_fabric_setup_cits(tf);
317 317
318 tf->tf_subsys = target_core_subsystem[0]; 318 tf->tf_subsys = target_core_subsystem[0];
319 snprintf(tf->tf_name, TARGET_FABRIC_NAME_SIZE, "%s", name); 319 snprintf(tf->tf_name, TARGET_FABRIC_NAME_SIZE, "%s", name);
320 320
321 mutex_lock(&g_tf_lock); 321 mutex_lock(&g_tf_lock);
322 list_add_tail(&tf->tf_list, &g_tf_list); 322 list_add_tail(&tf->tf_list, &g_tf_list);
323 mutex_unlock(&g_tf_lock); 323 mutex_unlock(&g_tf_lock);
324 324
325 pr_debug("<<<<<<<<<<<<<<<<<<<<<< BEGIN FABRIC API >>>>>>>>" 325 pr_debug("<<<<<<<<<<<<<<<<<<<<<< BEGIN FABRIC API >>>>>>>>"
326 ">>>>>>>>>>>>>>\n"); 326 ">>>>>>>>>>>>>>\n");
327 pr_debug("Initialized struct target_fabric_configfs: %p for" 327 pr_debug("Initialized struct target_fabric_configfs: %p for"
328 " %s\n", tf, tf->tf_name); 328 " %s\n", tf, tf->tf_name);
329 return tf; 329 return tf;
330 } 330 }
331 EXPORT_SYMBOL(target_fabric_configfs_init); 331 EXPORT_SYMBOL(target_fabric_configfs_init);
332 332
333 /* 333 /*
334 * Called by fabric plugins after FAILED target_fabric_configfs_register() call. 334 * Called by fabric plugins after FAILED target_fabric_configfs_register() call.
335 */ 335 */
336 void target_fabric_configfs_free( 336 void target_fabric_configfs_free(
337 struct target_fabric_configfs *tf) 337 struct target_fabric_configfs *tf)
338 { 338 {
339 mutex_lock(&g_tf_lock); 339 mutex_lock(&g_tf_lock);
340 list_del(&tf->tf_list); 340 list_del(&tf->tf_list);
341 mutex_unlock(&g_tf_lock); 341 mutex_unlock(&g_tf_lock);
342 342
343 kfree(tf); 343 kfree(tf);
344 } 344 }
345 EXPORT_SYMBOL(target_fabric_configfs_free); 345 EXPORT_SYMBOL(target_fabric_configfs_free);
346 346
347 /* 347 /*
348 * Perform a sanity check of the passed tf->tf_ops before completing 348 * Perform a sanity check of the passed tf->tf_ops before completing
349 * TCM fabric module registration. 349 * TCM fabric module registration.
350 */ 350 */
351 static int target_fabric_tf_ops_check( 351 static int target_fabric_tf_ops_check(
352 struct target_fabric_configfs *tf) 352 struct target_fabric_configfs *tf)
353 { 353 {
354 struct target_core_fabric_ops *tfo = &tf->tf_ops; 354 struct target_core_fabric_ops *tfo = &tf->tf_ops;
355 355
356 if (!tfo->get_fabric_name) { 356 if (!tfo->get_fabric_name) {
357 pr_err("Missing tfo->get_fabric_name()\n"); 357 pr_err("Missing tfo->get_fabric_name()\n");
358 return -EINVAL; 358 return -EINVAL;
359 } 359 }
360 if (!tfo->get_fabric_proto_ident) { 360 if (!tfo->get_fabric_proto_ident) {
361 pr_err("Missing tfo->get_fabric_proto_ident()\n"); 361 pr_err("Missing tfo->get_fabric_proto_ident()\n");
362 return -EINVAL; 362 return -EINVAL;
363 } 363 }
364 if (!tfo->tpg_get_wwn) { 364 if (!tfo->tpg_get_wwn) {
365 pr_err("Missing tfo->tpg_get_wwn()\n"); 365 pr_err("Missing tfo->tpg_get_wwn()\n");
366 return -EINVAL; 366 return -EINVAL;
367 } 367 }
368 if (!tfo->tpg_get_tag) { 368 if (!tfo->tpg_get_tag) {
369 pr_err("Missing tfo->tpg_get_tag()\n"); 369 pr_err("Missing tfo->tpg_get_tag()\n");
370 return -EINVAL; 370 return -EINVAL;
371 } 371 }
372 if (!tfo->tpg_get_default_depth) { 372 if (!tfo->tpg_get_default_depth) {
373 pr_err("Missing tfo->tpg_get_default_depth()\n"); 373 pr_err("Missing tfo->tpg_get_default_depth()\n");
374 return -EINVAL; 374 return -EINVAL;
375 } 375 }
376 if (!tfo->tpg_get_pr_transport_id) { 376 if (!tfo->tpg_get_pr_transport_id) {
377 pr_err("Missing tfo->tpg_get_pr_transport_id()\n"); 377 pr_err("Missing tfo->tpg_get_pr_transport_id()\n");
378 return -EINVAL; 378 return -EINVAL;
379 } 379 }
380 if (!tfo->tpg_get_pr_transport_id_len) { 380 if (!tfo->tpg_get_pr_transport_id_len) {
381 pr_err("Missing tfo->tpg_get_pr_transport_id_len()\n"); 381 pr_err("Missing tfo->tpg_get_pr_transport_id_len()\n");
382 return -EINVAL; 382 return -EINVAL;
383 } 383 }
384 if (!tfo->tpg_check_demo_mode) { 384 if (!tfo->tpg_check_demo_mode) {
385 pr_err("Missing tfo->tpg_check_demo_mode()\n"); 385 pr_err("Missing tfo->tpg_check_demo_mode()\n");
386 return -EINVAL; 386 return -EINVAL;
387 } 387 }
388 if (!tfo->tpg_check_demo_mode_cache) { 388 if (!tfo->tpg_check_demo_mode_cache) {
389 pr_err("Missing tfo->tpg_check_demo_mode_cache()\n"); 389 pr_err("Missing tfo->tpg_check_demo_mode_cache()\n");
390 return -EINVAL; 390 return -EINVAL;
391 } 391 }
392 if (!tfo->tpg_check_demo_mode_write_protect) { 392 if (!tfo->tpg_check_demo_mode_write_protect) {
393 pr_err("Missing tfo->tpg_check_demo_mode_write_protect()\n"); 393 pr_err("Missing tfo->tpg_check_demo_mode_write_protect()\n");
394 return -EINVAL; 394 return -EINVAL;
395 } 395 }
396 if (!tfo->tpg_check_prod_mode_write_protect) { 396 if (!tfo->tpg_check_prod_mode_write_protect) {
397 pr_err("Missing tfo->tpg_check_prod_mode_write_protect()\n"); 397 pr_err("Missing tfo->tpg_check_prod_mode_write_protect()\n");
398 return -EINVAL; 398 return -EINVAL;
399 } 399 }
400 if (!tfo->tpg_alloc_fabric_acl) { 400 if (!tfo->tpg_alloc_fabric_acl) {
401 pr_err("Missing tfo->tpg_alloc_fabric_acl()\n"); 401 pr_err("Missing tfo->tpg_alloc_fabric_acl()\n");
402 return -EINVAL; 402 return -EINVAL;
403 } 403 }
404 if (!tfo->tpg_release_fabric_acl) { 404 if (!tfo->tpg_release_fabric_acl) {
405 pr_err("Missing tfo->tpg_release_fabric_acl()\n"); 405 pr_err("Missing tfo->tpg_release_fabric_acl()\n");
406 return -EINVAL; 406 return -EINVAL;
407 } 407 }
408 if (!tfo->tpg_get_inst_index) { 408 if (!tfo->tpg_get_inst_index) {
409 pr_err("Missing tfo->tpg_get_inst_index()\n"); 409 pr_err("Missing tfo->tpg_get_inst_index()\n");
410 return -EINVAL; 410 return -EINVAL;
411 } 411 }
412 if (!tfo->release_cmd) { 412 if (!tfo->release_cmd) {
413 pr_err("Missing tfo->release_cmd()\n"); 413 pr_err("Missing tfo->release_cmd()\n");
414 return -EINVAL; 414 return -EINVAL;
415 } 415 }
416 if (!tfo->shutdown_session) { 416 if (!tfo->shutdown_session) {
417 pr_err("Missing tfo->shutdown_session()\n"); 417 pr_err("Missing tfo->shutdown_session()\n");
418 return -EINVAL; 418 return -EINVAL;
419 } 419 }
420 if (!tfo->close_session) { 420 if (!tfo->close_session) {
421 pr_err("Missing tfo->close_session()\n"); 421 pr_err("Missing tfo->close_session()\n");
422 return -EINVAL; 422 return -EINVAL;
423 } 423 }
424 if (!tfo->stop_session) { 424 if (!tfo->stop_session) {
425 pr_err("Missing tfo->stop_session()\n"); 425 pr_err("Missing tfo->stop_session()\n");
426 return -EINVAL; 426 return -EINVAL;
427 } 427 }
428 if (!tfo->fall_back_to_erl0) { 428 if (!tfo->fall_back_to_erl0) {
429 pr_err("Missing tfo->fall_back_to_erl0()\n"); 429 pr_err("Missing tfo->fall_back_to_erl0()\n");
430 return -EINVAL; 430 return -EINVAL;
431 } 431 }
432 if (!tfo->sess_logged_in) { 432 if (!tfo->sess_logged_in) {
433 pr_err("Missing tfo->sess_logged_in()\n"); 433 pr_err("Missing tfo->sess_logged_in()\n");
434 return -EINVAL; 434 return -EINVAL;
435 } 435 }
436 if (!tfo->sess_get_index) { 436 if (!tfo->sess_get_index) {
437 pr_err("Missing tfo->sess_get_index()\n"); 437 pr_err("Missing tfo->sess_get_index()\n");
438 return -EINVAL; 438 return -EINVAL;
439 } 439 }
440 if (!tfo->write_pending) { 440 if (!tfo->write_pending) {
441 pr_err("Missing tfo->write_pending()\n"); 441 pr_err("Missing tfo->write_pending()\n");
442 return -EINVAL; 442 return -EINVAL;
443 } 443 }
444 if (!tfo->write_pending_status) { 444 if (!tfo->write_pending_status) {
445 pr_err("Missing tfo->write_pending_status()\n"); 445 pr_err("Missing tfo->write_pending_status()\n");
446 return -EINVAL; 446 return -EINVAL;
447 } 447 }
448 if (!tfo->set_default_node_attributes) { 448 if (!tfo->set_default_node_attributes) {
449 pr_err("Missing tfo->set_default_node_attributes()\n"); 449 pr_err("Missing tfo->set_default_node_attributes()\n");
450 return -EINVAL; 450 return -EINVAL;
451 } 451 }
452 if (!tfo->get_task_tag) { 452 if (!tfo->get_task_tag) {
453 pr_err("Missing tfo->get_task_tag()\n"); 453 pr_err("Missing tfo->get_task_tag()\n");
454 return -EINVAL; 454 return -EINVAL;
455 } 455 }
456 if (!tfo->get_cmd_state) { 456 if (!tfo->get_cmd_state) {
457 pr_err("Missing tfo->get_cmd_state()\n"); 457 pr_err("Missing tfo->get_cmd_state()\n");
458 return -EINVAL; 458 return -EINVAL;
459 } 459 }
460 if (!tfo->queue_data_in) { 460 if (!tfo->queue_data_in) {
461 pr_err("Missing tfo->queue_data_in()\n"); 461 pr_err("Missing tfo->queue_data_in()\n");
462 return -EINVAL; 462 return -EINVAL;
463 } 463 }
464 if (!tfo->queue_status) { 464 if (!tfo->queue_status) {
465 pr_err("Missing tfo->queue_status()\n"); 465 pr_err("Missing tfo->queue_status()\n");
466 return -EINVAL; 466 return -EINVAL;
467 } 467 }
468 if (!tfo->queue_tm_rsp) { 468 if (!tfo->queue_tm_rsp) {
469 pr_err("Missing tfo->queue_tm_rsp()\n"); 469 pr_err("Missing tfo->queue_tm_rsp()\n");
470 return -EINVAL; 470 return -EINVAL;
471 } 471 }
472 if (!tfo->set_fabric_sense_len) { 472 if (!tfo->set_fabric_sense_len) {
473 pr_err("Missing tfo->set_fabric_sense_len()\n"); 473 pr_err("Missing tfo->set_fabric_sense_len()\n");
474 return -EINVAL; 474 return -EINVAL;
475 } 475 }
476 if (!tfo->get_fabric_sense_len) { 476 if (!tfo->get_fabric_sense_len) {
477 pr_err("Missing tfo->get_fabric_sense_len()\n"); 477 pr_err("Missing tfo->get_fabric_sense_len()\n");
478 return -EINVAL; 478 return -EINVAL;
479 } 479 }
480 if (!tfo->is_state_remove) { 480 if (!tfo->is_state_remove) {
481 pr_err("Missing tfo->is_state_remove()\n"); 481 pr_err("Missing tfo->is_state_remove()\n");
482 return -EINVAL; 482 return -EINVAL;
483 } 483 }
484 /* 484 /*
485 * We at least require tfo->fabric_make_wwn(), tfo->fabric_drop_wwn() 485 * We at least require tfo->fabric_make_wwn(), tfo->fabric_drop_wwn()
486 * tfo->fabric_make_tpg() and tfo->fabric_drop_tpg() in 486 * tfo->fabric_make_tpg() and tfo->fabric_drop_tpg() in
487 * target_core_fabric_configfs.c WWN+TPG group context code. 487 * target_core_fabric_configfs.c WWN+TPG group context code.
488 */ 488 */
489 if (!tfo->fabric_make_wwn) { 489 if (!tfo->fabric_make_wwn) {
490 pr_err("Missing tfo->fabric_make_wwn()\n"); 490 pr_err("Missing tfo->fabric_make_wwn()\n");
491 return -EINVAL; 491 return -EINVAL;
492 } 492 }
493 if (!tfo->fabric_drop_wwn) { 493 if (!tfo->fabric_drop_wwn) {
494 pr_err("Missing tfo->fabric_drop_wwn()\n"); 494 pr_err("Missing tfo->fabric_drop_wwn()\n");
495 return -EINVAL; 495 return -EINVAL;
496 } 496 }
497 if (!tfo->fabric_make_tpg) { 497 if (!tfo->fabric_make_tpg) {
498 pr_err("Missing tfo->fabric_make_tpg()\n"); 498 pr_err("Missing tfo->fabric_make_tpg()\n");
499 return -EINVAL; 499 return -EINVAL;
500 } 500 }
501 if (!tfo->fabric_drop_tpg) { 501 if (!tfo->fabric_drop_tpg) {
502 pr_err("Missing tfo->fabric_drop_tpg()\n"); 502 pr_err("Missing tfo->fabric_drop_tpg()\n");
503 return -EINVAL; 503 return -EINVAL;
504 } 504 }
505 505
506 return 0; 506 return 0;
507 } 507 }
508 508
509 /* 509 /*
510 * Called 2nd from fabric module with returned parameter of 510 * Called 2nd from fabric module with returned parameter of
511 * struct target_fabric_configfs * from target_fabric_configfs_init(). 511 * struct target_fabric_configfs * from target_fabric_configfs_init().
512 * 512 *
513 * Upon a successful registration, the new fabric's struct config_item is 513 * Upon a successful registration, the new fabric's struct config_item is
514 * return. Also, a pointer to this struct is set in the passed 514 * return. Also, a pointer to this struct is set in the passed
515 * struct target_fabric_configfs. 515 * struct target_fabric_configfs.
516 */ 516 */
517 int target_fabric_configfs_register( 517 int target_fabric_configfs_register(
518 struct target_fabric_configfs *tf) 518 struct target_fabric_configfs *tf)
519 { 519 {
520 int ret; 520 int ret;
521 521
522 if (!tf) { 522 if (!tf) {
523 pr_err("Unable to locate target_fabric_configfs" 523 pr_err("Unable to locate target_fabric_configfs"
524 " pointer\n"); 524 " pointer\n");
525 return -EINVAL; 525 return -EINVAL;
526 } 526 }
527 if (!tf->tf_subsys) { 527 if (!tf->tf_subsys) {
528 pr_err("Unable to target struct config_subsystem" 528 pr_err("Unable to target struct config_subsystem"
529 " pointer\n"); 529 " pointer\n");
530 return -EINVAL; 530 return -EINVAL;
531 } 531 }
532 ret = target_fabric_tf_ops_check(tf); 532 ret = target_fabric_tf_ops_check(tf);
533 if (ret < 0) 533 if (ret < 0)
534 return ret; 534 return ret;
535 535
536 pr_debug("<<<<<<<<<<<<<<<<<<<<<< END FABRIC API >>>>>>>>>>>>" 536 pr_debug("<<<<<<<<<<<<<<<<<<<<<< END FABRIC API >>>>>>>>>>>>"
537 ">>>>>>>>>>\n"); 537 ">>>>>>>>>>\n");
538 return 0; 538 return 0;
539 } 539 }
540 EXPORT_SYMBOL(target_fabric_configfs_register); 540 EXPORT_SYMBOL(target_fabric_configfs_register);
541 541
542 void target_fabric_configfs_deregister( 542 void target_fabric_configfs_deregister(
543 struct target_fabric_configfs *tf) 543 struct target_fabric_configfs *tf)
544 { 544 {
545 struct configfs_subsystem *su; 545 struct configfs_subsystem *su;
546 546
547 if (!tf) { 547 if (!tf) {
548 pr_err("Unable to locate passed target_fabric_" 548 pr_err("Unable to locate passed target_fabric_"
549 "configfs\n"); 549 "configfs\n");
550 return; 550 return;
551 } 551 }
552 su = tf->tf_subsys; 552 su = tf->tf_subsys;
553 if (!su) { 553 if (!su) {
554 pr_err("Unable to locate passed tf->tf_subsys" 554 pr_err("Unable to locate passed tf->tf_subsys"
555 " pointer\n"); 555 " pointer\n");
556 return; 556 return;
557 } 557 }
558 pr_debug("<<<<<<<<<<<<<<<<<<<<<< BEGIN FABRIC API >>>>>>>>>>" 558 pr_debug("<<<<<<<<<<<<<<<<<<<<<< BEGIN FABRIC API >>>>>>>>>>"
559 ">>>>>>>>>>>>\n"); 559 ">>>>>>>>>>>>\n");
560 mutex_lock(&g_tf_lock); 560 mutex_lock(&g_tf_lock);
561 if (atomic_read(&tf->tf_access_cnt)) { 561 if (atomic_read(&tf->tf_access_cnt)) {
562 mutex_unlock(&g_tf_lock); 562 mutex_unlock(&g_tf_lock);
563 pr_err("Non zero tf->tf_access_cnt for fabric %s\n", 563 pr_err("Non zero tf->tf_access_cnt for fabric %s\n",
564 tf->tf_name); 564 tf->tf_name);
565 BUG(); 565 BUG();
566 } 566 }
567 list_del(&tf->tf_list); 567 list_del(&tf->tf_list);
568 mutex_unlock(&g_tf_lock); 568 mutex_unlock(&g_tf_lock);
569 569
570 pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing tf:" 570 pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing tf:"
571 " %s\n", tf->tf_name); 571 " %s\n", tf->tf_name);
572 tf->tf_module = NULL; 572 tf->tf_module = NULL;
573 tf->tf_subsys = NULL; 573 tf->tf_subsys = NULL;
574 kfree(tf); 574 kfree(tf);
575 575
576 pr_debug("<<<<<<<<<<<<<<<<<<<<<< END FABRIC API >>>>>>>>>>>>>>>>>" 576 pr_debug("<<<<<<<<<<<<<<<<<<<<<< END FABRIC API >>>>>>>>>>>>>>>>>"
577 ">>>>>\n"); 577 ">>>>>\n");
578 } 578 }
579 EXPORT_SYMBOL(target_fabric_configfs_deregister); 579 EXPORT_SYMBOL(target_fabric_configfs_deregister);
580 580
581 /*############################################################################## 581 /*##############################################################################
582 // Stop functions called by external Target Fabrics Modules 582 // Stop functions called by external Target Fabrics Modules
583 //############################################################################*/ 583 //############################################################################*/
584 584
585 /* Start functions for struct config_item_type target_core_dev_attrib_cit */ 585 /* Start functions for struct config_item_type target_core_dev_attrib_cit */
586 586
587 #define DEF_DEV_ATTRIB_SHOW(_name) \ 587 #define DEF_DEV_ATTRIB_SHOW(_name) \
588 static ssize_t target_core_dev_show_attr_##_name( \ 588 static ssize_t target_core_dev_show_attr_##_name( \
589 struct se_dev_attrib *da, \ 589 struct se_dev_attrib *da, \
590 char *page) \ 590 char *page) \
591 { \ 591 { \
592 struct se_device *dev; \ 592 struct se_device *dev; \
593 struct se_subsystem_dev *se_dev = da->da_sub_dev; \ 593 struct se_subsystem_dev *se_dev = da->da_sub_dev; \
594 ssize_t rb; \ 594 ssize_t rb; \
595 \ 595 \
596 spin_lock(&se_dev->se_dev_lock); \ 596 spin_lock(&se_dev->se_dev_lock); \
597 dev = se_dev->se_dev_ptr; \ 597 dev = se_dev->se_dev_ptr; \
598 if (!dev) { \ 598 if (!dev) { \
599 spin_unlock(&se_dev->se_dev_lock); \ 599 spin_unlock(&se_dev->se_dev_lock); \
600 return -ENODEV; \ 600 return -ENODEV; \
601 } \ 601 } \
602 rb = snprintf(page, PAGE_SIZE, "%u\n", \ 602 rb = snprintf(page, PAGE_SIZE, "%u\n", \
603 (u32)dev->se_sub_dev->se_dev_attrib._name); \ 603 (u32)dev->se_sub_dev->se_dev_attrib._name); \
604 spin_unlock(&se_dev->se_dev_lock); \ 604 spin_unlock(&se_dev->se_dev_lock); \
605 \ 605 \
606 return rb; \ 606 return rb; \
607 } 607 }
608 608
609 #define DEF_DEV_ATTRIB_STORE(_name) \ 609 #define DEF_DEV_ATTRIB_STORE(_name) \
610 static ssize_t target_core_dev_store_attr_##_name( \ 610 static ssize_t target_core_dev_store_attr_##_name( \
611 struct se_dev_attrib *da, \ 611 struct se_dev_attrib *da, \
612 const char *page, \ 612 const char *page, \
613 size_t count) \ 613 size_t count) \
614 { \ 614 { \
615 struct se_device *dev; \ 615 struct se_device *dev; \
616 struct se_subsystem_dev *se_dev = da->da_sub_dev; \ 616 struct se_subsystem_dev *se_dev = da->da_sub_dev; \
617 unsigned long val; \ 617 unsigned long val; \
618 int ret; \ 618 int ret; \
619 \ 619 \
620 spin_lock(&se_dev->se_dev_lock); \ 620 spin_lock(&se_dev->se_dev_lock); \
621 dev = se_dev->se_dev_ptr; \ 621 dev = se_dev->se_dev_ptr; \
622 if (!dev) { \ 622 if (!dev) { \
623 spin_unlock(&se_dev->se_dev_lock); \ 623 spin_unlock(&se_dev->se_dev_lock); \
624 return -ENODEV; \ 624 return -ENODEV; \
625 } \ 625 } \
626 ret = strict_strtoul(page, 0, &val); \ 626 ret = strict_strtoul(page, 0, &val); \
627 if (ret < 0) { \ 627 if (ret < 0) { \
628 spin_unlock(&se_dev->se_dev_lock); \ 628 spin_unlock(&se_dev->se_dev_lock); \
629 pr_err("strict_strtoul() failed with" \ 629 pr_err("strict_strtoul() failed with" \
630 " ret: %d\n", ret); \ 630 " ret: %d\n", ret); \
631 return -EINVAL; \ 631 return -EINVAL; \
632 } \ 632 } \
633 ret = se_dev_set_##_name(dev, (u32)val); \ 633 ret = se_dev_set_##_name(dev, (u32)val); \
634 spin_unlock(&se_dev->se_dev_lock); \ 634 spin_unlock(&se_dev->se_dev_lock); \
635 \ 635 \
636 return (!ret) ? count : -EINVAL; \ 636 return (!ret) ? count : -EINVAL; \
637 } 637 }
638 638
639 #define DEF_DEV_ATTRIB(_name) \ 639 #define DEF_DEV_ATTRIB(_name) \
640 DEF_DEV_ATTRIB_SHOW(_name); \ 640 DEF_DEV_ATTRIB_SHOW(_name); \
641 DEF_DEV_ATTRIB_STORE(_name); 641 DEF_DEV_ATTRIB_STORE(_name);
642 642
643 #define DEF_DEV_ATTRIB_RO(_name) \ 643 #define DEF_DEV_ATTRIB_RO(_name) \
644 DEF_DEV_ATTRIB_SHOW(_name); 644 DEF_DEV_ATTRIB_SHOW(_name);
645 645
646 CONFIGFS_EATTR_STRUCT(target_core_dev_attrib, se_dev_attrib); 646 CONFIGFS_EATTR_STRUCT(target_core_dev_attrib, se_dev_attrib);
647 #define SE_DEV_ATTR(_name, _mode) \ 647 #define SE_DEV_ATTR(_name, _mode) \
648 static struct target_core_dev_attrib_attribute \ 648 static struct target_core_dev_attrib_attribute \
649 target_core_dev_attrib_##_name = \ 649 target_core_dev_attrib_##_name = \
650 __CONFIGFS_EATTR(_name, _mode, \ 650 __CONFIGFS_EATTR(_name, _mode, \
651 target_core_dev_show_attr_##_name, \ 651 target_core_dev_show_attr_##_name, \
652 target_core_dev_store_attr_##_name); 652 target_core_dev_store_attr_##_name);
653 653
654 #define SE_DEV_ATTR_RO(_name); \ 654 #define SE_DEV_ATTR_RO(_name); \
655 static struct target_core_dev_attrib_attribute \ 655 static struct target_core_dev_attrib_attribute \
656 target_core_dev_attrib_##_name = \ 656 target_core_dev_attrib_##_name = \
657 __CONFIGFS_EATTR_RO(_name, \ 657 __CONFIGFS_EATTR_RO(_name, \
658 target_core_dev_show_attr_##_name); 658 target_core_dev_show_attr_##_name);
659 659
660 DEF_DEV_ATTRIB(emulate_dpo); 660 DEF_DEV_ATTRIB(emulate_dpo);
661 SE_DEV_ATTR(emulate_dpo, S_IRUGO | S_IWUSR); 661 SE_DEV_ATTR(emulate_dpo, S_IRUGO | S_IWUSR);
662 662
663 DEF_DEV_ATTRIB(emulate_fua_write); 663 DEF_DEV_ATTRIB(emulate_fua_write);
664 SE_DEV_ATTR(emulate_fua_write, S_IRUGO | S_IWUSR); 664 SE_DEV_ATTR(emulate_fua_write, S_IRUGO | S_IWUSR);
665 665
666 DEF_DEV_ATTRIB(emulate_fua_read); 666 DEF_DEV_ATTRIB(emulate_fua_read);
667 SE_DEV_ATTR(emulate_fua_read, S_IRUGO | S_IWUSR); 667 SE_DEV_ATTR(emulate_fua_read, S_IRUGO | S_IWUSR);
668 668
669 DEF_DEV_ATTRIB(emulate_write_cache); 669 DEF_DEV_ATTRIB(emulate_write_cache);
670 SE_DEV_ATTR(emulate_write_cache, S_IRUGO | S_IWUSR); 670 SE_DEV_ATTR(emulate_write_cache, S_IRUGO | S_IWUSR);
671 671
672 DEF_DEV_ATTRIB(emulate_ua_intlck_ctrl); 672 DEF_DEV_ATTRIB(emulate_ua_intlck_ctrl);
673 SE_DEV_ATTR(emulate_ua_intlck_ctrl, S_IRUGO | S_IWUSR); 673 SE_DEV_ATTR(emulate_ua_intlck_ctrl, S_IRUGO | S_IWUSR);
674 674
675 DEF_DEV_ATTRIB(emulate_tas); 675 DEF_DEV_ATTRIB(emulate_tas);
676 SE_DEV_ATTR(emulate_tas, S_IRUGO | S_IWUSR); 676 SE_DEV_ATTR(emulate_tas, S_IRUGO | S_IWUSR);
677 677
678 DEF_DEV_ATTRIB(emulate_tpu); 678 DEF_DEV_ATTRIB(emulate_tpu);
679 SE_DEV_ATTR(emulate_tpu, S_IRUGO | S_IWUSR); 679 SE_DEV_ATTR(emulate_tpu, S_IRUGO | S_IWUSR);
680 680
681 DEF_DEV_ATTRIB(emulate_tpws); 681 DEF_DEV_ATTRIB(emulate_tpws);
682 SE_DEV_ATTR(emulate_tpws, S_IRUGO | S_IWUSR); 682 SE_DEV_ATTR(emulate_tpws, S_IRUGO | S_IWUSR);
683 683
684 DEF_DEV_ATTRIB(enforce_pr_isids); 684 DEF_DEV_ATTRIB(enforce_pr_isids);
685 SE_DEV_ATTR(enforce_pr_isids, S_IRUGO | S_IWUSR); 685 SE_DEV_ATTR(enforce_pr_isids, S_IRUGO | S_IWUSR);
686 686
687 DEF_DEV_ATTRIB(is_nonrot); 687 DEF_DEV_ATTRIB(is_nonrot);
688 SE_DEV_ATTR(is_nonrot, S_IRUGO | S_IWUSR); 688 SE_DEV_ATTR(is_nonrot, S_IRUGO | S_IWUSR);
689 689
690 DEF_DEV_ATTRIB(emulate_rest_reord); 690 DEF_DEV_ATTRIB(emulate_rest_reord);
691 SE_DEV_ATTR(emulate_rest_reord, S_IRUGO | S_IWUSR); 691 SE_DEV_ATTR(emulate_rest_reord, S_IRUGO | S_IWUSR);
692 692
693 DEF_DEV_ATTRIB_RO(hw_block_size); 693 DEF_DEV_ATTRIB_RO(hw_block_size);
694 SE_DEV_ATTR_RO(hw_block_size); 694 SE_DEV_ATTR_RO(hw_block_size);
695 695
696 DEF_DEV_ATTRIB(block_size); 696 DEF_DEV_ATTRIB(block_size);
697 SE_DEV_ATTR(block_size, S_IRUGO | S_IWUSR); 697 SE_DEV_ATTR(block_size, S_IRUGO | S_IWUSR);
698 698
699 DEF_DEV_ATTRIB_RO(hw_max_sectors); 699 DEF_DEV_ATTRIB_RO(hw_max_sectors);
700 SE_DEV_ATTR_RO(hw_max_sectors); 700 SE_DEV_ATTR_RO(hw_max_sectors);
701 701
702 DEF_DEV_ATTRIB(max_sectors); 702 DEF_DEV_ATTRIB(max_sectors);
703 SE_DEV_ATTR(max_sectors, S_IRUGO | S_IWUSR); 703 SE_DEV_ATTR(max_sectors, S_IRUGO | S_IWUSR);
704 704
705 DEF_DEV_ATTRIB(optimal_sectors); 705 DEF_DEV_ATTRIB(optimal_sectors);
706 SE_DEV_ATTR(optimal_sectors, S_IRUGO | S_IWUSR); 706 SE_DEV_ATTR(optimal_sectors, S_IRUGO | S_IWUSR);
707 707
708 DEF_DEV_ATTRIB_RO(hw_queue_depth); 708 DEF_DEV_ATTRIB_RO(hw_queue_depth);
709 SE_DEV_ATTR_RO(hw_queue_depth); 709 SE_DEV_ATTR_RO(hw_queue_depth);
710 710
711 DEF_DEV_ATTRIB(queue_depth); 711 DEF_DEV_ATTRIB(queue_depth);
712 SE_DEV_ATTR(queue_depth, S_IRUGO | S_IWUSR); 712 SE_DEV_ATTR(queue_depth, S_IRUGO | S_IWUSR);
713 713
714 DEF_DEV_ATTRIB(max_unmap_lba_count); 714 DEF_DEV_ATTRIB(max_unmap_lba_count);
715 SE_DEV_ATTR(max_unmap_lba_count, S_IRUGO | S_IWUSR); 715 SE_DEV_ATTR(max_unmap_lba_count, S_IRUGO | S_IWUSR);
716 716
717 DEF_DEV_ATTRIB(max_unmap_block_desc_count); 717 DEF_DEV_ATTRIB(max_unmap_block_desc_count);
718 SE_DEV_ATTR(max_unmap_block_desc_count, S_IRUGO | S_IWUSR); 718 SE_DEV_ATTR(max_unmap_block_desc_count, S_IRUGO | S_IWUSR);
719 719
720 DEF_DEV_ATTRIB(unmap_granularity); 720 DEF_DEV_ATTRIB(unmap_granularity);
721 SE_DEV_ATTR(unmap_granularity, S_IRUGO | S_IWUSR); 721 SE_DEV_ATTR(unmap_granularity, S_IRUGO | S_IWUSR);
722 722
723 DEF_DEV_ATTRIB(unmap_granularity_alignment); 723 DEF_DEV_ATTRIB(unmap_granularity_alignment);
724 SE_DEV_ATTR(unmap_granularity_alignment, S_IRUGO | S_IWUSR); 724 SE_DEV_ATTR(unmap_granularity_alignment, S_IRUGO | S_IWUSR);
725 725
726 CONFIGFS_EATTR_OPS(target_core_dev_attrib, se_dev_attrib, da_group); 726 CONFIGFS_EATTR_OPS(target_core_dev_attrib, se_dev_attrib, da_group);
727 727
728 static struct configfs_attribute *target_core_dev_attrib_attrs[] = { 728 static struct configfs_attribute *target_core_dev_attrib_attrs[] = {
729 &target_core_dev_attrib_emulate_dpo.attr, 729 &target_core_dev_attrib_emulate_dpo.attr,
730 &target_core_dev_attrib_emulate_fua_write.attr, 730 &target_core_dev_attrib_emulate_fua_write.attr,
731 &target_core_dev_attrib_emulate_fua_read.attr, 731 &target_core_dev_attrib_emulate_fua_read.attr,
732 &target_core_dev_attrib_emulate_write_cache.attr, 732 &target_core_dev_attrib_emulate_write_cache.attr,
733 &target_core_dev_attrib_emulate_ua_intlck_ctrl.attr, 733 &target_core_dev_attrib_emulate_ua_intlck_ctrl.attr,
734 &target_core_dev_attrib_emulate_tas.attr, 734 &target_core_dev_attrib_emulate_tas.attr,
735 &target_core_dev_attrib_emulate_tpu.attr, 735 &target_core_dev_attrib_emulate_tpu.attr,
736 &target_core_dev_attrib_emulate_tpws.attr, 736 &target_core_dev_attrib_emulate_tpws.attr,
737 &target_core_dev_attrib_enforce_pr_isids.attr, 737 &target_core_dev_attrib_enforce_pr_isids.attr,
738 &target_core_dev_attrib_is_nonrot.attr, 738 &target_core_dev_attrib_is_nonrot.attr,
739 &target_core_dev_attrib_emulate_rest_reord.attr, 739 &target_core_dev_attrib_emulate_rest_reord.attr,
740 &target_core_dev_attrib_hw_block_size.attr, 740 &target_core_dev_attrib_hw_block_size.attr,
741 &target_core_dev_attrib_block_size.attr, 741 &target_core_dev_attrib_block_size.attr,
742 &target_core_dev_attrib_hw_max_sectors.attr, 742 &target_core_dev_attrib_hw_max_sectors.attr,
743 &target_core_dev_attrib_max_sectors.attr, 743 &target_core_dev_attrib_max_sectors.attr,
744 &target_core_dev_attrib_optimal_sectors.attr, 744 &target_core_dev_attrib_optimal_sectors.attr,
745 &target_core_dev_attrib_hw_queue_depth.attr, 745 &target_core_dev_attrib_hw_queue_depth.attr,
746 &target_core_dev_attrib_queue_depth.attr, 746 &target_core_dev_attrib_queue_depth.attr,
747 &target_core_dev_attrib_max_unmap_lba_count.attr, 747 &target_core_dev_attrib_max_unmap_lba_count.attr,
748 &target_core_dev_attrib_max_unmap_block_desc_count.attr, 748 &target_core_dev_attrib_max_unmap_block_desc_count.attr,
749 &target_core_dev_attrib_unmap_granularity.attr, 749 &target_core_dev_attrib_unmap_granularity.attr,
750 &target_core_dev_attrib_unmap_granularity_alignment.attr, 750 &target_core_dev_attrib_unmap_granularity_alignment.attr,
751 NULL, 751 NULL,
752 }; 752 };
753 753
754 static struct configfs_item_operations target_core_dev_attrib_ops = { 754 static struct configfs_item_operations target_core_dev_attrib_ops = {
755 .show_attribute = target_core_dev_attrib_attr_show, 755 .show_attribute = target_core_dev_attrib_attr_show,
756 .store_attribute = target_core_dev_attrib_attr_store, 756 .store_attribute = target_core_dev_attrib_attr_store,
757 }; 757 };
758 758
759 static struct config_item_type target_core_dev_attrib_cit = { 759 static struct config_item_type target_core_dev_attrib_cit = {
760 .ct_item_ops = &target_core_dev_attrib_ops, 760 .ct_item_ops = &target_core_dev_attrib_ops,
761 .ct_attrs = target_core_dev_attrib_attrs, 761 .ct_attrs = target_core_dev_attrib_attrs,
762 .ct_owner = THIS_MODULE, 762 .ct_owner = THIS_MODULE,
763 }; 763 };
764 764
765 /* End functions for struct config_item_type target_core_dev_attrib_cit */ 765 /* End functions for struct config_item_type target_core_dev_attrib_cit */
766 766
767 /* Start functions for struct config_item_type target_core_dev_wwn_cit */ 767 /* Start functions for struct config_item_type target_core_dev_wwn_cit */
768 768
769 CONFIGFS_EATTR_STRUCT(target_core_dev_wwn, t10_wwn); 769 CONFIGFS_EATTR_STRUCT(target_core_dev_wwn, t10_wwn);
770 #define SE_DEV_WWN_ATTR(_name, _mode) \ 770 #define SE_DEV_WWN_ATTR(_name, _mode) \
771 static struct target_core_dev_wwn_attribute target_core_dev_wwn_##_name = \ 771 static struct target_core_dev_wwn_attribute target_core_dev_wwn_##_name = \
772 __CONFIGFS_EATTR(_name, _mode, \ 772 __CONFIGFS_EATTR(_name, _mode, \
773 target_core_dev_wwn_show_attr_##_name, \ 773 target_core_dev_wwn_show_attr_##_name, \
774 target_core_dev_wwn_store_attr_##_name); 774 target_core_dev_wwn_store_attr_##_name);
775 775
776 #define SE_DEV_WWN_ATTR_RO(_name); \ 776 #define SE_DEV_WWN_ATTR_RO(_name); \
777 do { \ 777 do { \
778 static struct target_core_dev_wwn_attribute \ 778 static struct target_core_dev_wwn_attribute \
779 target_core_dev_wwn_##_name = \ 779 target_core_dev_wwn_##_name = \
780 __CONFIGFS_EATTR_RO(_name, \ 780 __CONFIGFS_EATTR_RO(_name, \
781 target_core_dev_wwn_show_attr_##_name); \ 781 target_core_dev_wwn_show_attr_##_name); \
782 } while (0); 782 } while (0);
783 783
784 /* 784 /*
785 * VPD page 0x80 Unit serial 785 * VPD page 0x80 Unit serial
786 */ 786 */
787 static ssize_t target_core_dev_wwn_show_attr_vpd_unit_serial( 787 static ssize_t target_core_dev_wwn_show_attr_vpd_unit_serial(
788 struct t10_wwn *t10_wwn, 788 struct t10_wwn *t10_wwn,
789 char *page) 789 char *page)
790 { 790 {
791 struct se_subsystem_dev *se_dev = t10_wwn->t10_sub_dev; 791 struct se_subsystem_dev *se_dev = t10_wwn->t10_sub_dev;
792 struct se_device *dev; 792 struct se_device *dev;
793 793
794 dev = se_dev->se_dev_ptr; 794 dev = se_dev->se_dev_ptr;
795 if (!dev) 795 if (!dev)
796 return -ENODEV; 796 return -ENODEV;
797 797
798 return sprintf(page, "T10 VPD Unit Serial Number: %s\n", 798 return sprintf(page, "T10 VPD Unit Serial Number: %s\n",
799 &t10_wwn->unit_serial[0]); 799 &t10_wwn->unit_serial[0]);
800 } 800 }
801 801
802 static ssize_t target_core_dev_wwn_store_attr_vpd_unit_serial( 802 static ssize_t target_core_dev_wwn_store_attr_vpd_unit_serial(
803 struct t10_wwn *t10_wwn, 803 struct t10_wwn *t10_wwn,
804 const char *page, 804 const char *page,
805 size_t count) 805 size_t count)
806 { 806 {
807 struct se_subsystem_dev *su_dev = t10_wwn->t10_sub_dev; 807 struct se_subsystem_dev *su_dev = t10_wwn->t10_sub_dev;
808 struct se_device *dev; 808 struct se_device *dev;
809 unsigned char buf[INQUIRY_VPD_SERIAL_LEN]; 809 unsigned char buf[INQUIRY_VPD_SERIAL_LEN];
810 810
811 /* 811 /*
812 * If Linux/SCSI subsystem_api_t plugin got a VPD Unit Serial 812 * If Linux/SCSI subsystem_api_t plugin got a VPD Unit Serial
813 * from the struct scsi_device level firmware, do not allow 813 * from the struct scsi_device level firmware, do not allow
814 * VPD Unit Serial to be emulated. 814 * VPD Unit Serial to be emulated.
815 * 815 *
816 * Note this struct scsi_device could also be emulating VPD 816 * Note this struct scsi_device could also be emulating VPD
817 * information from its drivers/scsi LLD. But for now we assume 817 * information from its drivers/scsi LLD. But for now we assume
818 * it is doing 'the right thing' wrt a world wide unique 818 * it is doing 'the right thing' wrt a world wide unique
819 * VPD Unit Serial Number that OS dependent multipath can depend on. 819 * VPD Unit Serial Number that OS dependent multipath can depend on.
820 */ 820 */
821 if (su_dev->su_dev_flags & SDF_FIRMWARE_VPD_UNIT_SERIAL) { 821 if (su_dev->su_dev_flags & SDF_FIRMWARE_VPD_UNIT_SERIAL) {
822 pr_err("Underlying SCSI device firmware provided VPD" 822 pr_err("Underlying SCSI device firmware provided VPD"
823 " Unit Serial, ignoring request\n"); 823 " Unit Serial, ignoring request\n");
824 return -EOPNOTSUPP; 824 return -EOPNOTSUPP;
825 } 825 }
826 826
827 if (strlen(page) >= INQUIRY_VPD_SERIAL_LEN) { 827 if (strlen(page) >= INQUIRY_VPD_SERIAL_LEN) {
828 pr_err("Emulated VPD Unit Serial exceeds" 828 pr_err("Emulated VPD Unit Serial exceeds"
829 " INQUIRY_VPD_SERIAL_LEN: %d\n", INQUIRY_VPD_SERIAL_LEN); 829 " INQUIRY_VPD_SERIAL_LEN: %d\n", INQUIRY_VPD_SERIAL_LEN);
830 return -EOVERFLOW; 830 return -EOVERFLOW;
831 } 831 }
832 /* 832 /*
833 * Check to see if any active $FABRIC_MOD exports exist. If they 833 * Check to see if any active $FABRIC_MOD exports exist. If they
834 * do exist, fail here as changing this information on the fly 834 * do exist, fail here as changing this information on the fly
835 * (underneath the initiator side OS dependent multipath code) 835 * (underneath the initiator side OS dependent multipath code)
836 * could cause negative effects. 836 * could cause negative effects.
837 */ 837 */
838 dev = su_dev->se_dev_ptr; 838 dev = su_dev->se_dev_ptr;
839 if (dev) { 839 if (dev) {
840 if (atomic_read(&dev->dev_export_obj.obj_access_count)) { 840 if (atomic_read(&dev->dev_export_obj.obj_access_count)) {
841 pr_err("Unable to set VPD Unit Serial while" 841 pr_err("Unable to set VPD Unit Serial while"
842 " active %d $FABRIC_MOD exports exist\n", 842 " active %d $FABRIC_MOD exports exist\n",
843 atomic_read(&dev->dev_export_obj.obj_access_count)); 843 atomic_read(&dev->dev_export_obj.obj_access_count));
844 return -EINVAL; 844 return -EINVAL;
845 } 845 }
846 } 846 }
847 /* 847 /*
848 * This currently assumes ASCII encoding for emulated VPD Unit Serial. 848 * This currently assumes ASCII encoding for emulated VPD Unit Serial.
849 * 849 *
850 * Also, strip any newline added from the userspace 850 * Also, strip any newline added from the userspace
851 * echo $UUID > $TARGET/$HBA/$STORAGE_OBJECT/wwn/vpd_unit_serial 851 * echo $UUID > $TARGET/$HBA/$STORAGE_OBJECT/wwn/vpd_unit_serial
852 */ 852 */
853 memset(buf, 0, INQUIRY_VPD_SERIAL_LEN); 853 memset(buf, 0, INQUIRY_VPD_SERIAL_LEN);
854 snprintf(buf, INQUIRY_VPD_SERIAL_LEN, "%s", page); 854 snprintf(buf, INQUIRY_VPD_SERIAL_LEN, "%s", page);
855 snprintf(su_dev->t10_wwn.unit_serial, INQUIRY_VPD_SERIAL_LEN, 855 snprintf(su_dev->t10_wwn.unit_serial, INQUIRY_VPD_SERIAL_LEN,
856 "%s", strstrip(buf)); 856 "%s", strstrip(buf));
857 su_dev->su_dev_flags |= SDF_EMULATED_VPD_UNIT_SERIAL; 857 su_dev->su_dev_flags |= SDF_EMULATED_VPD_UNIT_SERIAL;
858 858
859 pr_debug("Target_Core_ConfigFS: Set emulated VPD Unit Serial:" 859 pr_debug("Target_Core_ConfigFS: Set emulated VPD Unit Serial:"
860 " %s\n", su_dev->t10_wwn.unit_serial); 860 " %s\n", su_dev->t10_wwn.unit_serial);
861 861
862 return count; 862 return count;
863 } 863 }
864 864
865 SE_DEV_WWN_ATTR(vpd_unit_serial, S_IRUGO | S_IWUSR); 865 SE_DEV_WWN_ATTR(vpd_unit_serial, S_IRUGO | S_IWUSR);
866 866
867 /* 867 /*
868 * VPD page 0x83 Protocol Identifier 868 * VPD page 0x83 Protocol Identifier
869 */ 869 */
870 static ssize_t target_core_dev_wwn_show_attr_vpd_protocol_identifier( 870 static ssize_t target_core_dev_wwn_show_attr_vpd_protocol_identifier(
871 struct t10_wwn *t10_wwn, 871 struct t10_wwn *t10_wwn,
872 char *page) 872 char *page)
873 { 873 {
874 struct se_subsystem_dev *se_dev = t10_wwn->t10_sub_dev; 874 struct se_subsystem_dev *se_dev = t10_wwn->t10_sub_dev;
875 struct se_device *dev; 875 struct se_device *dev;
876 struct t10_vpd *vpd; 876 struct t10_vpd *vpd;
877 unsigned char buf[VPD_TMP_BUF_SIZE]; 877 unsigned char buf[VPD_TMP_BUF_SIZE];
878 ssize_t len = 0; 878 ssize_t len = 0;
879 879
880 dev = se_dev->se_dev_ptr; 880 dev = se_dev->se_dev_ptr;
881 if (!dev) 881 if (!dev)
882 return -ENODEV; 882 return -ENODEV;
883 883
884 memset(buf, 0, VPD_TMP_BUF_SIZE); 884 memset(buf, 0, VPD_TMP_BUF_SIZE);
885 885
886 spin_lock(&t10_wwn->t10_vpd_lock); 886 spin_lock(&t10_wwn->t10_vpd_lock);
887 list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { 887 list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) {
888 if (!vpd->protocol_identifier_set) 888 if (!vpd->protocol_identifier_set)
889 continue; 889 continue;
890 890
891 transport_dump_vpd_proto_id(vpd, buf, VPD_TMP_BUF_SIZE); 891 transport_dump_vpd_proto_id(vpd, buf, VPD_TMP_BUF_SIZE);
892 892
893 if (len + strlen(buf) >= PAGE_SIZE) 893 if (len + strlen(buf) >= PAGE_SIZE)
894 break; 894 break;
895 895
896 len += sprintf(page+len, "%s", buf); 896 len += sprintf(page+len, "%s", buf);
897 } 897 }
898 spin_unlock(&t10_wwn->t10_vpd_lock); 898 spin_unlock(&t10_wwn->t10_vpd_lock);
899 899
900 return len; 900 return len;
901 } 901 }
902 902
903 static ssize_t target_core_dev_wwn_store_attr_vpd_protocol_identifier( 903 static ssize_t target_core_dev_wwn_store_attr_vpd_protocol_identifier(
904 struct t10_wwn *t10_wwn, 904 struct t10_wwn *t10_wwn,
905 const char *page, 905 const char *page,
906 size_t count) 906 size_t count)
907 { 907 {
908 return -ENOSYS; 908 return -ENOSYS;
909 } 909 }
910 910
911 SE_DEV_WWN_ATTR(vpd_protocol_identifier, S_IRUGO | S_IWUSR); 911 SE_DEV_WWN_ATTR(vpd_protocol_identifier, S_IRUGO | S_IWUSR);
912 912
913 /* 913 /*
914 * Generic wrapper for dumping VPD identifiers by association. 914 * Generic wrapper for dumping VPD identifiers by association.
915 */ 915 */
916 #define DEF_DEV_WWN_ASSOC_SHOW(_name, _assoc) \ 916 #define DEF_DEV_WWN_ASSOC_SHOW(_name, _assoc) \
917 static ssize_t target_core_dev_wwn_show_attr_##_name( \ 917 static ssize_t target_core_dev_wwn_show_attr_##_name( \
918 struct t10_wwn *t10_wwn, \ 918 struct t10_wwn *t10_wwn, \
919 char *page) \ 919 char *page) \
920 { \ 920 { \
921 struct se_subsystem_dev *se_dev = t10_wwn->t10_sub_dev; \ 921 struct se_subsystem_dev *se_dev = t10_wwn->t10_sub_dev; \
922 struct se_device *dev; \ 922 struct se_device *dev; \
923 struct t10_vpd *vpd; \ 923 struct t10_vpd *vpd; \
924 unsigned char buf[VPD_TMP_BUF_SIZE]; \ 924 unsigned char buf[VPD_TMP_BUF_SIZE]; \
925 ssize_t len = 0; \ 925 ssize_t len = 0; \
926 \ 926 \
927 dev = se_dev->se_dev_ptr; \ 927 dev = se_dev->se_dev_ptr; \
928 if (!dev) \ 928 if (!dev) \
929 return -ENODEV; \ 929 return -ENODEV; \
930 \ 930 \
931 spin_lock(&t10_wwn->t10_vpd_lock); \ 931 spin_lock(&t10_wwn->t10_vpd_lock); \
932 list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { \ 932 list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { \
933 if (vpd->association != _assoc) \ 933 if (vpd->association != _assoc) \
934 continue; \ 934 continue; \
935 \ 935 \
936 memset(buf, 0, VPD_TMP_BUF_SIZE); \ 936 memset(buf, 0, VPD_TMP_BUF_SIZE); \
937 transport_dump_vpd_assoc(vpd, buf, VPD_TMP_BUF_SIZE); \ 937 transport_dump_vpd_assoc(vpd, buf, VPD_TMP_BUF_SIZE); \
938 if (len + strlen(buf) >= PAGE_SIZE) \ 938 if (len + strlen(buf) >= PAGE_SIZE) \
939 break; \ 939 break; \
940 len += sprintf(page+len, "%s", buf); \ 940 len += sprintf(page+len, "%s", buf); \
941 \ 941 \
942 memset(buf, 0, VPD_TMP_BUF_SIZE); \ 942 memset(buf, 0, VPD_TMP_BUF_SIZE); \
943 transport_dump_vpd_ident_type(vpd, buf, VPD_TMP_BUF_SIZE); \ 943 transport_dump_vpd_ident_type(vpd, buf, VPD_TMP_BUF_SIZE); \
944 if (len + strlen(buf) >= PAGE_SIZE) \ 944 if (len + strlen(buf) >= PAGE_SIZE) \
945 break; \ 945 break; \
946 len += sprintf(page+len, "%s", buf); \ 946 len += sprintf(page+len, "%s", buf); \
947 \ 947 \
948 memset(buf, 0, VPD_TMP_BUF_SIZE); \ 948 memset(buf, 0, VPD_TMP_BUF_SIZE); \
949 transport_dump_vpd_ident(vpd, buf, VPD_TMP_BUF_SIZE); \ 949 transport_dump_vpd_ident(vpd, buf, VPD_TMP_BUF_SIZE); \
950 if (len + strlen(buf) >= PAGE_SIZE) \ 950 if (len + strlen(buf) >= PAGE_SIZE) \
951 break; \ 951 break; \
952 len += sprintf(page+len, "%s", buf); \ 952 len += sprintf(page+len, "%s", buf); \
953 } \ 953 } \
954 spin_unlock(&t10_wwn->t10_vpd_lock); \ 954 spin_unlock(&t10_wwn->t10_vpd_lock); \
955 \ 955 \
956 return len; \ 956 return len; \
957 } 957 }
958 958
959 /* 959 /*
960 * VPD page 0x83 Association: Logical Unit 960 * VPD page 0x83 Association: Logical Unit
961 */ 961 */
962 DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_logical_unit, 0x00); 962 DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_logical_unit, 0x00);
963 963
964 static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_logical_unit( 964 static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_logical_unit(
965 struct t10_wwn *t10_wwn, 965 struct t10_wwn *t10_wwn,
966 const char *page, 966 const char *page,
967 size_t count) 967 size_t count)
968 { 968 {
969 return -ENOSYS; 969 return -ENOSYS;
970 } 970 }
971 971
972 SE_DEV_WWN_ATTR(vpd_assoc_logical_unit, S_IRUGO | S_IWUSR); 972 SE_DEV_WWN_ATTR(vpd_assoc_logical_unit, S_IRUGO | S_IWUSR);
973 973
974 /* 974 /*
975 * VPD page 0x83 Association: Target Port 975 * VPD page 0x83 Association: Target Port
976 */ 976 */
977 DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_target_port, 0x10); 977 DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_target_port, 0x10);
978 978
979 static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_target_port( 979 static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_target_port(
980 struct t10_wwn *t10_wwn, 980 struct t10_wwn *t10_wwn,
981 const char *page, 981 const char *page,
982 size_t count) 982 size_t count)
983 { 983 {
984 return -ENOSYS; 984 return -ENOSYS;
985 } 985 }
986 986
987 SE_DEV_WWN_ATTR(vpd_assoc_target_port, S_IRUGO | S_IWUSR); 987 SE_DEV_WWN_ATTR(vpd_assoc_target_port, S_IRUGO | S_IWUSR);
988 988
989 /* 989 /*
990 * VPD page 0x83 Association: SCSI Target Device 990 * VPD page 0x83 Association: SCSI Target Device
991 */ 991 */
992 DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_scsi_target_device, 0x20); 992 DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_scsi_target_device, 0x20);
993 993
994 static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_scsi_target_device( 994 static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_scsi_target_device(
995 struct t10_wwn *t10_wwn, 995 struct t10_wwn *t10_wwn,
996 const char *page, 996 const char *page,
997 size_t count) 997 size_t count)
998 { 998 {
999 return -ENOSYS; 999 return -ENOSYS;
1000 } 1000 }
1001 1001
1002 SE_DEV_WWN_ATTR(vpd_assoc_scsi_target_device, S_IRUGO | S_IWUSR); 1002 SE_DEV_WWN_ATTR(vpd_assoc_scsi_target_device, S_IRUGO | S_IWUSR);
1003 1003
1004 CONFIGFS_EATTR_OPS(target_core_dev_wwn, t10_wwn, t10_wwn_group); 1004 CONFIGFS_EATTR_OPS(target_core_dev_wwn, t10_wwn, t10_wwn_group);
1005 1005
1006 static struct configfs_attribute *target_core_dev_wwn_attrs[] = { 1006 static struct configfs_attribute *target_core_dev_wwn_attrs[] = {
1007 &target_core_dev_wwn_vpd_unit_serial.attr, 1007 &target_core_dev_wwn_vpd_unit_serial.attr,
1008 &target_core_dev_wwn_vpd_protocol_identifier.attr, 1008 &target_core_dev_wwn_vpd_protocol_identifier.attr,
1009 &target_core_dev_wwn_vpd_assoc_logical_unit.attr, 1009 &target_core_dev_wwn_vpd_assoc_logical_unit.attr,
1010 &target_core_dev_wwn_vpd_assoc_target_port.attr, 1010 &target_core_dev_wwn_vpd_assoc_target_port.attr,
1011 &target_core_dev_wwn_vpd_assoc_scsi_target_device.attr, 1011 &target_core_dev_wwn_vpd_assoc_scsi_target_device.attr,
1012 NULL, 1012 NULL,
1013 }; 1013 };
1014 1014
1015 static struct configfs_item_operations target_core_dev_wwn_ops = { 1015 static struct configfs_item_operations target_core_dev_wwn_ops = {
1016 .show_attribute = target_core_dev_wwn_attr_show, 1016 .show_attribute = target_core_dev_wwn_attr_show,
1017 .store_attribute = target_core_dev_wwn_attr_store, 1017 .store_attribute = target_core_dev_wwn_attr_store,
1018 }; 1018 };
1019 1019
1020 static struct config_item_type target_core_dev_wwn_cit = { 1020 static struct config_item_type target_core_dev_wwn_cit = {
1021 .ct_item_ops = &target_core_dev_wwn_ops, 1021 .ct_item_ops = &target_core_dev_wwn_ops,
1022 .ct_attrs = target_core_dev_wwn_attrs, 1022 .ct_attrs = target_core_dev_wwn_attrs,
1023 .ct_owner = THIS_MODULE, 1023 .ct_owner = THIS_MODULE,
1024 }; 1024 };
1025 1025
1026 /* End functions for struct config_item_type target_core_dev_wwn_cit */ 1026 /* End functions for struct config_item_type target_core_dev_wwn_cit */
1027 1027
1028 /* Start functions for struct config_item_type target_core_dev_pr_cit */ 1028 /* Start functions for struct config_item_type target_core_dev_pr_cit */
1029 1029
1030 CONFIGFS_EATTR_STRUCT(target_core_dev_pr, se_subsystem_dev); 1030 CONFIGFS_EATTR_STRUCT(target_core_dev_pr, se_subsystem_dev);
1031 #define SE_DEV_PR_ATTR(_name, _mode) \ 1031 #define SE_DEV_PR_ATTR(_name, _mode) \
1032 static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \ 1032 static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \
1033 __CONFIGFS_EATTR(_name, _mode, \ 1033 __CONFIGFS_EATTR(_name, _mode, \
1034 target_core_dev_pr_show_attr_##_name, \ 1034 target_core_dev_pr_show_attr_##_name, \
1035 target_core_dev_pr_store_attr_##_name); 1035 target_core_dev_pr_store_attr_##_name);
1036 1036
1037 #define SE_DEV_PR_ATTR_RO(_name); \ 1037 #define SE_DEV_PR_ATTR_RO(_name); \
1038 static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \ 1038 static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \
1039 __CONFIGFS_EATTR_RO(_name, \ 1039 __CONFIGFS_EATTR_RO(_name, \
1040 target_core_dev_pr_show_attr_##_name); 1040 target_core_dev_pr_show_attr_##_name);
1041 1041
1042 /* 1042 /*
1043 * res_holder 1043 * res_holder
1044 */ 1044 */
1045 static ssize_t target_core_dev_pr_show_spc3_res( 1045 static ssize_t target_core_dev_pr_show_spc3_res(
1046 struct se_device *dev, 1046 struct se_device *dev,
1047 char *page, 1047 char *page,
1048 ssize_t *len) 1048 ssize_t *len)
1049 { 1049 {
1050 struct se_node_acl *se_nacl; 1050 struct se_node_acl *se_nacl;
1051 struct t10_pr_registration *pr_reg; 1051 struct t10_pr_registration *pr_reg;
1052 char i_buf[PR_REG_ISID_ID_LEN]; 1052 char i_buf[PR_REG_ISID_ID_LEN];
1053 int prf_isid; 1053 int prf_isid;
1054 1054
1055 memset(i_buf, 0, PR_REG_ISID_ID_LEN); 1055 memset(i_buf, 0, PR_REG_ISID_ID_LEN);
1056 1056
1057 spin_lock(&dev->dev_reservation_lock); 1057 spin_lock(&dev->dev_reservation_lock);
1058 pr_reg = dev->dev_pr_res_holder; 1058 pr_reg = dev->dev_pr_res_holder;
1059 if (!pr_reg) { 1059 if (!pr_reg) {
1060 *len += sprintf(page + *len, "No SPC-3 Reservation holder\n"); 1060 *len += sprintf(page + *len, "No SPC-3 Reservation holder\n");
1061 spin_unlock(&dev->dev_reservation_lock); 1061 spin_unlock(&dev->dev_reservation_lock);
1062 return *len; 1062 return *len;
1063 } 1063 }
1064 se_nacl = pr_reg->pr_reg_nacl; 1064 se_nacl = pr_reg->pr_reg_nacl;
1065 prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0], 1065 prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0],
1066 PR_REG_ISID_ID_LEN); 1066 PR_REG_ISID_ID_LEN);
1067 1067
1068 *len += sprintf(page + *len, "SPC-3 Reservation: %s Initiator: %s%s\n", 1068 *len += sprintf(page + *len, "SPC-3 Reservation: %s Initiator: %s%s\n",
1069 se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), 1069 se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(),
1070 se_nacl->initiatorname, (prf_isid) ? &i_buf[0] : ""); 1070 se_nacl->initiatorname, (prf_isid) ? &i_buf[0] : "");
1071 spin_unlock(&dev->dev_reservation_lock); 1071 spin_unlock(&dev->dev_reservation_lock);
1072 1072
1073 return *len; 1073 return *len;
1074 } 1074 }
1075 1075
1076 static ssize_t target_core_dev_pr_show_spc2_res( 1076 static ssize_t target_core_dev_pr_show_spc2_res(
1077 struct se_device *dev, 1077 struct se_device *dev,
1078 char *page, 1078 char *page,
1079 ssize_t *len) 1079 ssize_t *len)
1080 { 1080 {
1081 struct se_node_acl *se_nacl; 1081 struct se_node_acl *se_nacl;
1082 1082
1083 spin_lock(&dev->dev_reservation_lock); 1083 spin_lock(&dev->dev_reservation_lock);
1084 se_nacl = dev->dev_reserved_node_acl; 1084 se_nacl = dev->dev_reserved_node_acl;
1085 if (!se_nacl) { 1085 if (!se_nacl) {
1086 *len += sprintf(page + *len, "No SPC-2 Reservation holder\n"); 1086 *len += sprintf(page + *len, "No SPC-2 Reservation holder\n");
1087 spin_unlock(&dev->dev_reservation_lock); 1087 spin_unlock(&dev->dev_reservation_lock);
1088 return *len; 1088 return *len;
1089 } 1089 }
1090 *len += sprintf(page + *len, "SPC-2 Reservation: %s Initiator: %s\n", 1090 *len += sprintf(page + *len, "SPC-2 Reservation: %s Initiator: %s\n",
1091 se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), 1091 se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(),
1092 se_nacl->initiatorname); 1092 se_nacl->initiatorname);
1093 spin_unlock(&dev->dev_reservation_lock); 1093 spin_unlock(&dev->dev_reservation_lock);
1094 1094
1095 return *len; 1095 return *len;
1096 } 1096 }
1097 1097
1098 static ssize_t target_core_dev_pr_show_attr_res_holder( 1098 static ssize_t target_core_dev_pr_show_attr_res_holder(
1099 struct se_subsystem_dev *su_dev, 1099 struct se_subsystem_dev *su_dev,
1100 char *page) 1100 char *page)
1101 { 1101 {
1102 ssize_t len = 0; 1102 ssize_t len = 0;
1103 1103
1104 if (!su_dev->se_dev_ptr) 1104 if (!su_dev->se_dev_ptr)
1105 return -ENODEV; 1105 return -ENODEV;
1106 1106
1107 switch (su_dev->t10_pr.res_type) { 1107 switch (su_dev->t10_pr.res_type) {
1108 case SPC3_PERSISTENT_RESERVATIONS: 1108 case SPC3_PERSISTENT_RESERVATIONS:
1109 target_core_dev_pr_show_spc3_res(su_dev->se_dev_ptr, 1109 target_core_dev_pr_show_spc3_res(su_dev->se_dev_ptr,
1110 page, &len); 1110 page, &len);
1111 break; 1111 break;
1112 case SPC2_RESERVATIONS: 1112 case SPC2_RESERVATIONS:
1113 target_core_dev_pr_show_spc2_res(su_dev->se_dev_ptr, 1113 target_core_dev_pr_show_spc2_res(su_dev->se_dev_ptr,
1114 page, &len); 1114 page, &len);
1115 break; 1115 break;
1116 case SPC_PASSTHROUGH: 1116 case SPC_PASSTHROUGH:
1117 len += sprintf(page+len, "Passthrough\n"); 1117 len += sprintf(page+len, "Passthrough\n");
1118 break; 1118 break;
1119 default: 1119 default:
1120 len += sprintf(page+len, "Unknown\n"); 1120 len += sprintf(page+len, "Unknown\n");
1121 break; 1121 break;
1122 } 1122 }
1123 1123
1124 return len; 1124 return len;
1125 } 1125 }
1126 1126
1127 SE_DEV_PR_ATTR_RO(res_holder); 1127 SE_DEV_PR_ATTR_RO(res_holder);
1128 1128
1129 /* 1129 /*
1130 * res_pr_all_tgt_pts 1130 * res_pr_all_tgt_pts
1131 */ 1131 */
1132 static ssize_t target_core_dev_pr_show_attr_res_pr_all_tgt_pts( 1132 static ssize_t target_core_dev_pr_show_attr_res_pr_all_tgt_pts(
1133 struct se_subsystem_dev *su_dev, 1133 struct se_subsystem_dev *su_dev,
1134 char *page) 1134 char *page)
1135 { 1135 {
1136 struct se_device *dev; 1136 struct se_device *dev;
1137 struct t10_pr_registration *pr_reg; 1137 struct t10_pr_registration *pr_reg;
1138 ssize_t len = 0; 1138 ssize_t len = 0;
1139 1139
1140 dev = su_dev->se_dev_ptr; 1140 dev = su_dev->se_dev_ptr;
1141 if (!dev) 1141 if (!dev)
1142 return -ENODEV; 1142 return -ENODEV;
1143 1143
1144 if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) 1144 if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS)
1145 return len; 1145 return len;
1146 1146
1147 spin_lock(&dev->dev_reservation_lock); 1147 spin_lock(&dev->dev_reservation_lock);
1148 pr_reg = dev->dev_pr_res_holder; 1148 pr_reg = dev->dev_pr_res_holder;
1149 if (!pr_reg) { 1149 if (!pr_reg) {
1150 len = sprintf(page, "No SPC-3 Reservation holder\n"); 1150 len = sprintf(page, "No SPC-3 Reservation holder\n");
1151 spin_unlock(&dev->dev_reservation_lock); 1151 spin_unlock(&dev->dev_reservation_lock);
1152 return len; 1152 return len;
1153 } 1153 }
1154 /* 1154 /*
1155 * See All Target Ports (ALL_TG_PT) bit in spcr17, section 6.14.3 1155 * See All Target Ports (ALL_TG_PT) bit in spcr17, section 6.14.3
1156 * Basic PERSISTENT RESERVER OUT parameter list, page 290 1156 * Basic PERSISTENT RESERVER OUT parameter list, page 290
1157 */ 1157 */
1158 if (pr_reg->pr_reg_all_tg_pt) 1158 if (pr_reg->pr_reg_all_tg_pt)
1159 len = sprintf(page, "SPC-3 Reservation: All Target" 1159 len = sprintf(page, "SPC-3 Reservation: All Target"
1160 " Ports registration\n"); 1160 " Ports registration\n");
1161 else 1161 else
1162 len = sprintf(page, "SPC-3 Reservation: Single" 1162 len = sprintf(page, "SPC-3 Reservation: Single"
1163 " Target Port registration\n"); 1163 " Target Port registration\n");
1164 spin_unlock(&dev->dev_reservation_lock); 1164 spin_unlock(&dev->dev_reservation_lock);
1165 1165
1166 return len; 1166 return len;
1167 } 1167 }
1168 1168
1169 SE_DEV_PR_ATTR_RO(res_pr_all_tgt_pts); 1169 SE_DEV_PR_ATTR_RO(res_pr_all_tgt_pts);
1170 1170
1171 /* 1171 /*
1172 * res_pr_generation 1172 * res_pr_generation
1173 */ 1173 */
1174 static ssize_t target_core_dev_pr_show_attr_res_pr_generation( 1174 static ssize_t target_core_dev_pr_show_attr_res_pr_generation(
1175 struct se_subsystem_dev *su_dev, 1175 struct se_subsystem_dev *su_dev,
1176 char *page) 1176 char *page)
1177 { 1177 {
1178 if (!su_dev->se_dev_ptr) 1178 if (!su_dev->se_dev_ptr)
1179 return -ENODEV; 1179 return -ENODEV;
1180 1180
1181 if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) 1181 if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS)
1182 return 0; 1182 return 0;
1183 1183
1184 return sprintf(page, "0x%08x\n", su_dev->t10_pr.pr_generation); 1184 return sprintf(page, "0x%08x\n", su_dev->t10_pr.pr_generation);
1185 } 1185 }
1186 1186
1187 SE_DEV_PR_ATTR_RO(res_pr_generation); 1187 SE_DEV_PR_ATTR_RO(res_pr_generation);
1188 1188
1189 /* 1189 /*
1190 * res_pr_holder_tg_port 1190 * res_pr_holder_tg_port
1191 */ 1191 */
1192 static ssize_t target_core_dev_pr_show_attr_res_pr_holder_tg_port( 1192 static ssize_t target_core_dev_pr_show_attr_res_pr_holder_tg_port(
1193 struct se_subsystem_dev *su_dev, 1193 struct se_subsystem_dev *su_dev,
1194 char *page) 1194 char *page)
1195 { 1195 {
1196 struct se_device *dev; 1196 struct se_device *dev;
1197 struct se_node_acl *se_nacl; 1197 struct se_node_acl *se_nacl;
1198 struct se_lun *lun; 1198 struct se_lun *lun;
1199 struct se_portal_group *se_tpg; 1199 struct se_portal_group *se_tpg;
1200 struct t10_pr_registration *pr_reg; 1200 struct t10_pr_registration *pr_reg;
1201 struct target_core_fabric_ops *tfo; 1201 struct target_core_fabric_ops *tfo;
1202 ssize_t len = 0; 1202 ssize_t len = 0;
1203 1203
1204 dev = su_dev->se_dev_ptr; 1204 dev = su_dev->se_dev_ptr;
1205 if (!dev) 1205 if (!dev)
1206 return -ENODEV; 1206 return -ENODEV;
1207 1207
1208 if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) 1208 if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS)
1209 return len; 1209 return len;
1210 1210
1211 spin_lock(&dev->dev_reservation_lock); 1211 spin_lock(&dev->dev_reservation_lock);
1212 pr_reg = dev->dev_pr_res_holder; 1212 pr_reg = dev->dev_pr_res_holder;
1213 if (!pr_reg) { 1213 if (!pr_reg) {
1214 len = sprintf(page, "No SPC-3 Reservation holder\n"); 1214 len = sprintf(page, "No SPC-3 Reservation holder\n");
1215 spin_unlock(&dev->dev_reservation_lock); 1215 spin_unlock(&dev->dev_reservation_lock);
1216 return len; 1216 return len;
1217 } 1217 }
1218 se_nacl = pr_reg->pr_reg_nacl; 1218 se_nacl = pr_reg->pr_reg_nacl;
1219 se_tpg = se_nacl->se_tpg; 1219 se_tpg = se_nacl->se_tpg;
1220 lun = pr_reg->pr_reg_tg_pt_lun; 1220 lun = pr_reg->pr_reg_tg_pt_lun;
1221 tfo = se_tpg->se_tpg_tfo; 1221 tfo = se_tpg->se_tpg_tfo;
1222 1222
1223 len += sprintf(page+len, "SPC-3 Reservation: %s" 1223 len += sprintf(page+len, "SPC-3 Reservation: %s"
1224 " Target Node Endpoint: %s\n", tfo->get_fabric_name(), 1224 " Target Node Endpoint: %s\n", tfo->get_fabric_name(),
1225 tfo->tpg_get_wwn(se_tpg)); 1225 tfo->tpg_get_wwn(se_tpg));
1226 len += sprintf(page+len, "SPC-3 Reservation: Relative Port" 1226 len += sprintf(page+len, "SPC-3 Reservation: Relative Port"
1227 " Identifer Tag: %hu %s Portal Group Tag: %hu" 1227 " Identifer Tag: %hu %s Portal Group Tag: %hu"
1228 " %s Logical Unit: %u\n", lun->lun_sep->sep_rtpi, 1228 " %s Logical Unit: %u\n", lun->lun_sep->sep_rtpi,
1229 tfo->get_fabric_name(), tfo->tpg_get_tag(se_tpg), 1229 tfo->get_fabric_name(), tfo->tpg_get_tag(se_tpg),
1230 tfo->get_fabric_name(), lun->unpacked_lun); 1230 tfo->get_fabric_name(), lun->unpacked_lun);
1231 spin_unlock(&dev->dev_reservation_lock); 1231 spin_unlock(&dev->dev_reservation_lock);
1232 1232
1233 return len; 1233 return len;
1234 } 1234 }
1235 1235
1236 SE_DEV_PR_ATTR_RO(res_pr_holder_tg_port); 1236 SE_DEV_PR_ATTR_RO(res_pr_holder_tg_port);
1237 1237
1238 /* 1238 /*
1239 * res_pr_registered_i_pts 1239 * res_pr_registered_i_pts
1240 */ 1240 */
1241 static ssize_t target_core_dev_pr_show_attr_res_pr_registered_i_pts( 1241 static ssize_t target_core_dev_pr_show_attr_res_pr_registered_i_pts(
1242 struct se_subsystem_dev *su_dev, 1242 struct se_subsystem_dev *su_dev,
1243 char *page) 1243 char *page)
1244 { 1244 {
1245 struct target_core_fabric_ops *tfo; 1245 struct target_core_fabric_ops *tfo;
1246 struct t10_pr_registration *pr_reg; 1246 struct t10_pr_registration *pr_reg;
1247 unsigned char buf[384]; 1247 unsigned char buf[384];
1248 char i_buf[PR_REG_ISID_ID_LEN]; 1248 char i_buf[PR_REG_ISID_ID_LEN];
1249 ssize_t len = 0; 1249 ssize_t len = 0;
1250 int reg_count = 0, prf_isid; 1250 int reg_count = 0, prf_isid;
1251 1251
1252 if (!su_dev->se_dev_ptr) 1252 if (!su_dev->se_dev_ptr)
1253 return -ENODEV; 1253 return -ENODEV;
1254 1254
1255 if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) 1255 if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS)
1256 return len; 1256 return len;
1257 1257
1258 len += sprintf(page+len, "SPC-3 PR Registrations:\n"); 1258 len += sprintf(page+len, "SPC-3 PR Registrations:\n");
1259 1259
1260 spin_lock(&su_dev->t10_pr.registration_lock); 1260 spin_lock(&su_dev->t10_pr.registration_lock);
1261 list_for_each_entry(pr_reg, &su_dev->t10_pr.registration_list, 1261 list_for_each_entry(pr_reg, &su_dev->t10_pr.registration_list,
1262 pr_reg_list) { 1262 pr_reg_list) {
1263 1263
1264 memset(buf, 0, 384); 1264 memset(buf, 0, 384);
1265 memset(i_buf, 0, PR_REG_ISID_ID_LEN); 1265 memset(i_buf, 0, PR_REG_ISID_ID_LEN);
1266 tfo = pr_reg->pr_reg_nacl->se_tpg->se_tpg_tfo; 1266 tfo = pr_reg->pr_reg_nacl->se_tpg->se_tpg_tfo;
1267 prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0], 1267 prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0],
1268 PR_REG_ISID_ID_LEN); 1268 PR_REG_ISID_ID_LEN);
1269 sprintf(buf, "%s Node: %s%s Key: 0x%016Lx PRgen: 0x%08x\n", 1269 sprintf(buf, "%s Node: %s%s Key: 0x%016Lx PRgen: 0x%08x\n",
1270 tfo->get_fabric_name(), 1270 tfo->get_fabric_name(),
1271 pr_reg->pr_reg_nacl->initiatorname, (prf_isid) ? 1271 pr_reg->pr_reg_nacl->initiatorname, (prf_isid) ?
1272 &i_buf[0] : "", pr_reg->pr_res_key, 1272 &i_buf[0] : "", pr_reg->pr_res_key,
1273 pr_reg->pr_res_generation); 1273 pr_reg->pr_res_generation);
1274 1274
1275 if (len + strlen(buf) >= PAGE_SIZE) 1275 if (len + strlen(buf) >= PAGE_SIZE)
1276 break; 1276 break;
1277 1277
1278 len += sprintf(page+len, "%s", buf); 1278 len += sprintf(page+len, "%s", buf);
1279 reg_count++; 1279 reg_count++;
1280 } 1280 }
1281 spin_unlock(&su_dev->t10_pr.registration_lock); 1281 spin_unlock(&su_dev->t10_pr.registration_lock);
1282 1282
1283 if (!reg_count) 1283 if (!reg_count)
1284 len += sprintf(page+len, "None\n"); 1284 len += sprintf(page+len, "None\n");
1285 1285
1286 return len; 1286 return len;
1287 } 1287 }
1288 1288
1289 SE_DEV_PR_ATTR_RO(res_pr_registered_i_pts); 1289 SE_DEV_PR_ATTR_RO(res_pr_registered_i_pts);
1290 1290
1291 /* 1291 /*
1292 * res_pr_type 1292 * res_pr_type
1293 */ 1293 */
1294 static ssize_t target_core_dev_pr_show_attr_res_pr_type( 1294 static ssize_t target_core_dev_pr_show_attr_res_pr_type(
1295 struct se_subsystem_dev *su_dev, 1295 struct se_subsystem_dev *su_dev,
1296 char *page) 1296 char *page)
1297 { 1297 {
1298 struct se_device *dev; 1298 struct se_device *dev;
1299 struct t10_pr_registration *pr_reg; 1299 struct t10_pr_registration *pr_reg;
1300 ssize_t len = 0; 1300 ssize_t len = 0;
1301 1301
1302 dev = su_dev->se_dev_ptr; 1302 dev = su_dev->se_dev_ptr;
1303 if (!dev) 1303 if (!dev)
1304 return -ENODEV; 1304 return -ENODEV;
1305 1305
1306 if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) 1306 if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS)
1307 return len; 1307 return len;
1308 1308
1309 spin_lock(&dev->dev_reservation_lock); 1309 spin_lock(&dev->dev_reservation_lock);
1310 pr_reg = dev->dev_pr_res_holder; 1310 pr_reg = dev->dev_pr_res_holder;
1311 if (!pr_reg) { 1311 if (!pr_reg) {
1312 len = sprintf(page, "No SPC-3 Reservation holder\n"); 1312 len = sprintf(page, "No SPC-3 Reservation holder\n");
1313 spin_unlock(&dev->dev_reservation_lock); 1313 spin_unlock(&dev->dev_reservation_lock);
1314 return len; 1314 return len;
1315 } 1315 }
1316 len = sprintf(page, "SPC-3 Reservation Type: %s\n", 1316 len = sprintf(page, "SPC-3 Reservation Type: %s\n",
1317 core_scsi3_pr_dump_type(pr_reg->pr_res_type)); 1317 core_scsi3_pr_dump_type(pr_reg->pr_res_type));
1318 spin_unlock(&dev->dev_reservation_lock); 1318 spin_unlock(&dev->dev_reservation_lock);
1319 1319
1320 return len; 1320 return len;
1321 } 1321 }
1322 1322
1323 SE_DEV_PR_ATTR_RO(res_pr_type); 1323 SE_DEV_PR_ATTR_RO(res_pr_type);
1324 1324
1325 /* 1325 /*
1326 * res_type 1326 * res_type
1327 */ 1327 */
1328 static ssize_t target_core_dev_pr_show_attr_res_type( 1328 static ssize_t target_core_dev_pr_show_attr_res_type(
1329 struct se_subsystem_dev *su_dev, 1329 struct se_subsystem_dev *su_dev,
1330 char *page) 1330 char *page)
1331 { 1331 {
1332 ssize_t len = 0; 1332 ssize_t len = 0;
1333 1333
1334 if (!su_dev->se_dev_ptr) 1334 if (!su_dev->se_dev_ptr)
1335 return -ENODEV; 1335 return -ENODEV;
1336 1336
1337 switch (su_dev->t10_pr.res_type) { 1337 switch (su_dev->t10_pr.res_type) {
1338 case SPC3_PERSISTENT_RESERVATIONS: 1338 case SPC3_PERSISTENT_RESERVATIONS:
1339 len = sprintf(page, "SPC3_PERSISTENT_RESERVATIONS\n"); 1339 len = sprintf(page, "SPC3_PERSISTENT_RESERVATIONS\n");
1340 break; 1340 break;
1341 case SPC2_RESERVATIONS: 1341 case SPC2_RESERVATIONS:
1342 len = sprintf(page, "SPC2_RESERVATIONS\n"); 1342 len = sprintf(page, "SPC2_RESERVATIONS\n");
1343 break; 1343 break;
1344 case SPC_PASSTHROUGH: 1344 case SPC_PASSTHROUGH:
1345 len = sprintf(page, "SPC_PASSTHROUGH\n"); 1345 len = sprintf(page, "SPC_PASSTHROUGH\n");
1346 break; 1346 break;
1347 default: 1347 default:
1348 len = sprintf(page, "UNKNOWN\n"); 1348 len = sprintf(page, "UNKNOWN\n");
1349 break; 1349 break;
1350 } 1350 }
1351 1351
1352 return len; 1352 return len;
1353 } 1353 }
1354 1354
1355 SE_DEV_PR_ATTR_RO(res_type); 1355 SE_DEV_PR_ATTR_RO(res_type);
1356 1356
1357 /* 1357 /*
1358 * res_aptpl_active 1358 * res_aptpl_active
1359 */ 1359 */
1360 1360
1361 static ssize_t target_core_dev_pr_show_attr_res_aptpl_active( 1361 static ssize_t target_core_dev_pr_show_attr_res_aptpl_active(
1362 struct se_subsystem_dev *su_dev, 1362 struct se_subsystem_dev *su_dev,
1363 char *page) 1363 char *page)
1364 { 1364 {
1365 if (!su_dev->se_dev_ptr) 1365 if (!su_dev->se_dev_ptr)
1366 return -ENODEV; 1366 return -ENODEV;
1367 1367
1368 if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) 1368 if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS)
1369 return 0; 1369 return 0;
1370 1370
1371 return sprintf(page, "APTPL Bit Status: %s\n", 1371 return sprintf(page, "APTPL Bit Status: %s\n",
1372 (su_dev->t10_pr.pr_aptpl_active) ? "Activated" : "Disabled"); 1372 (su_dev->t10_pr.pr_aptpl_active) ? "Activated" : "Disabled");
1373 } 1373 }
1374 1374
1375 SE_DEV_PR_ATTR_RO(res_aptpl_active); 1375 SE_DEV_PR_ATTR_RO(res_aptpl_active);
1376 1376
1377 /* 1377 /*
1378 * res_aptpl_metadata 1378 * res_aptpl_metadata
1379 */ 1379 */
1380 static ssize_t target_core_dev_pr_show_attr_res_aptpl_metadata( 1380 static ssize_t target_core_dev_pr_show_attr_res_aptpl_metadata(
1381 struct se_subsystem_dev *su_dev, 1381 struct se_subsystem_dev *su_dev,
1382 char *page) 1382 char *page)
1383 { 1383 {
1384 if (!su_dev->se_dev_ptr) 1384 if (!su_dev->se_dev_ptr)
1385 return -ENODEV; 1385 return -ENODEV;
1386 1386
1387 if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) 1387 if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS)
1388 return 0; 1388 return 0;
1389 1389
1390 return sprintf(page, "Ready to process PR APTPL metadata..\n"); 1390 return sprintf(page, "Ready to process PR APTPL metadata..\n");
1391 } 1391 }
1392 1392
1393 enum { 1393 enum {
1394 Opt_initiator_fabric, Opt_initiator_node, Opt_initiator_sid, 1394 Opt_initiator_fabric, Opt_initiator_node, Opt_initiator_sid,
1395 Opt_sa_res_key, Opt_res_holder, Opt_res_type, Opt_res_scope, 1395 Opt_sa_res_key, Opt_res_holder, Opt_res_type, Opt_res_scope,
1396 Opt_res_all_tg_pt, Opt_mapped_lun, Opt_target_fabric, 1396 Opt_res_all_tg_pt, Opt_mapped_lun, Opt_target_fabric,
1397 Opt_target_node, Opt_tpgt, Opt_port_rtpi, Opt_target_lun, Opt_err 1397 Opt_target_node, Opt_tpgt, Opt_port_rtpi, Opt_target_lun, Opt_err
1398 }; 1398 };
1399 1399
1400 static match_table_t tokens = { 1400 static match_table_t tokens = {
1401 {Opt_initiator_fabric, "initiator_fabric=%s"}, 1401 {Opt_initiator_fabric, "initiator_fabric=%s"},
1402 {Opt_initiator_node, "initiator_node=%s"}, 1402 {Opt_initiator_node, "initiator_node=%s"},
1403 {Opt_initiator_sid, "initiator_sid=%s"}, 1403 {Opt_initiator_sid, "initiator_sid=%s"},
1404 {Opt_sa_res_key, "sa_res_key=%s"}, 1404 {Opt_sa_res_key, "sa_res_key=%s"},
1405 {Opt_res_holder, "res_holder=%d"}, 1405 {Opt_res_holder, "res_holder=%d"},
1406 {Opt_res_type, "res_type=%d"}, 1406 {Opt_res_type, "res_type=%d"},
1407 {Opt_res_scope, "res_scope=%d"}, 1407 {Opt_res_scope, "res_scope=%d"},
1408 {Opt_res_all_tg_pt, "res_all_tg_pt=%d"}, 1408 {Opt_res_all_tg_pt, "res_all_tg_pt=%d"},
1409 {Opt_mapped_lun, "mapped_lun=%d"}, 1409 {Opt_mapped_lun, "mapped_lun=%d"},
1410 {Opt_target_fabric, "target_fabric=%s"}, 1410 {Opt_target_fabric, "target_fabric=%s"},
1411 {Opt_target_node, "target_node=%s"}, 1411 {Opt_target_node, "target_node=%s"},
1412 {Opt_tpgt, "tpgt=%d"}, 1412 {Opt_tpgt, "tpgt=%d"},
1413 {Opt_port_rtpi, "port_rtpi=%d"}, 1413 {Opt_port_rtpi, "port_rtpi=%d"},
1414 {Opt_target_lun, "target_lun=%d"}, 1414 {Opt_target_lun, "target_lun=%d"},
1415 {Opt_err, NULL} 1415 {Opt_err, NULL}
1416 }; 1416 };
1417 1417
1418 static ssize_t target_core_dev_pr_store_attr_res_aptpl_metadata( 1418 static ssize_t target_core_dev_pr_store_attr_res_aptpl_metadata(
1419 struct se_subsystem_dev *su_dev, 1419 struct se_subsystem_dev *su_dev,
1420 const char *page, 1420 const char *page,
1421 size_t count) 1421 size_t count)
1422 { 1422 {
1423 struct se_device *dev; 1423 struct se_device *dev;
1424 unsigned char *i_fabric = NULL, *i_port = NULL, *isid = NULL; 1424 unsigned char *i_fabric = NULL, *i_port = NULL, *isid = NULL;
1425 unsigned char *t_fabric = NULL, *t_port = NULL; 1425 unsigned char *t_fabric = NULL, *t_port = NULL;
1426 char *orig, *ptr, *arg_p, *opts; 1426 char *orig, *ptr, *arg_p, *opts;
1427 substring_t args[MAX_OPT_ARGS]; 1427 substring_t args[MAX_OPT_ARGS];
1428 unsigned long long tmp_ll; 1428 unsigned long long tmp_ll;
1429 u64 sa_res_key = 0; 1429 u64 sa_res_key = 0;
1430 u32 mapped_lun = 0, target_lun = 0; 1430 u32 mapped_lun = 0, target_lun = 0;
1431 int ret = -1, res_holder = 0, all_tg_pt = 0, arg, token; 1431 int ret = -1, res_holder = 0, all_tg_pt = 0, arg, token;
1432 u16 port_rpti = 0, tpgt = 0; 1432 u16 port_rpti = 0, tpgt = 0;
1433 u8 type = 0, scope; 1433 u8 type = 0, scope;
1434 1434
1435 dev = su_dev->se_dev_ptr; 1435 dev = su_dev->se_dev_ptr;
1436 if (!dev) 1436 if (!dev)
1437 return -ENODEV; 1437 return -ENODEV;
1438 1438
1439 if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) 1439 if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS)
1440 return 0; 1440 return 0;
1441 1441
1442 if (atomic_read(&dev->dev_export_obj.obj_access_count)) { 1442 if (atomic_read(&dev->dev_export_obj.obj_access_count)) {
1443 pr_debug("Unable to process APTPL metadata while" 1443 pr_debug("Unable to process APTPL metadata while"
1444 " active fabric exports exist\n"); 1444 " active fabric exports exist\n");
1445 return -EINVAL; 1445 return -EINVAL;
1446 } 1446 }
1447 1447
1448 opts = kstrdup(page, GFP_KERNEL); 1448 opts = kstrdup(page, GFP_KERNEL);
1449 if (!opts) 1449 if (!opts)
1450 return -ENOMEM; 1450 return -ENOMEM;
1451 1451
1452 orig = opts; 1452 orig = opts;
1453 while ((ptr = strsep(&opts, ",\n")) != NULL) { 1453 while ((ptr = strsep(&opts, ",\n")) != NULL) {
1454 if (!*ptr) 1454 if (!*ptr)
1455 continue; 1455 continue;
1456 1456
1457 token = match_token(ptr, tokens, args); 1457 token = match_token(ptr, tokens, args);
1458 switch (token) { 1458 switch (token) {
1459 case Opt_initiator_fabric: 1459 case Opt_initiator_fabric:
1460 i_fabric = match_strdup(&args[0]); 1460 i_fabric = match_strdup(&args[0]);
1461 if (!i_fabric) { 1461 if (!i_fabric) {
1462 ret = -ENOMEM; 1462 ret = -ENOMEM;
1463 goto out; 1463 goto out;
1464 } 1464 }
1465 break; 1465 break;
1466 case Opt_initiator_node: 1466 case Opt_initiator_node:
1467 i_port = match_strdup(&args[0]); 1467 i_port = match_strdup(&args[0]);
1468 if (!i_port) { 1468 if (!i_port) {
1469 ret = -ENOMEM; 1469 ret = -ENOMEM;
1470 goto out; 1470 goto out;
1471 } 1471 }
1472 if (strlen(i_port) >= PR_APTPL_MAX_IPORT_LEN) { 1472 if (strlen(i_port) >= PR_APTPL_MAX_IPORT_LEN) {
1473 pr_err("APTPL metadata initiator_node=" 1473 pr_err("APTPL metadata initiator_node="
1474 " exceeds PR_APTPL_MAX_IPORT_LEN: %d\n", 1474 " exceeds PR_APTPL_MAX_IPORT_LEN: %d\n",
1475 PR_APTPL_MAX_IPORT_LEN); 1475 PR_APTPL_MAX_IPORT_LEN);
1476 ret = -EINVAL; 1476 ret = -EINVAL;
1477 break; 1477 break;
1478 } 1478 }
1479 break; 1479 break;
1480 case Opt_initiator_sid: 1480 case Opt_initiator_sid:
1481 isid = match_strdup(&args[0]); 1481 isid = match_strdup(&args[0]);
1482 if (!isid) { 1482 if (!isid) {
1483 ret = -ENOMEM; 1483 ret = -ENOMEM;
1484 goto out; 1484 goto out;
1485 } 1485 }
1486 if (strlen(isid) >= PR_REG_ISID_LEN) { 1486 if (strlen(isid) >= PR_REG_ISID_LEN) {
1487 pr_err("APTPL metadata initiator_isid" 1487 pr_err("APTPL metadata initiator_isid"
1488 "= exceeds PR_REG_ISID_LEN: %d\n", 1488 "= exceeds PR_REG_ISID_LEN: %d\n",
1489 PR_REG_ISID_LEN); 1489 PR_REG_ISID_LEN);
1490 ret = -EINVAL; 1490 ret = -EINVAL;
1491 break; 1491 break;
1492 } 1492 }
1493 break; 1493 break;
1494 case Opt_sa_res_key: 1494 case Opt_sa_res_key:
1495 arg_p = match_strdup(&args[0]); 1495 arg_p = match_strdup(&args[0]);
1496 if (!arg_p) { 1496 if (!arg_p) {
1497 ret = -ENOMEM; 1497 ret = -ENOMEM;
1498 goto out; 1498 goto out;
1499 } 1499 }
1500 ret = strict_strtoull(arg_p, 0, &tmp_ll); 1500 ret = strict_strtoull(arg_p, 0, &tmp_ll);
1501 if (ret < 0) { 1501 if (ret < 0) {
1502 pr_err("strict_strtoull() failed for" 1502 pr_err("strict_strtoull() failed for"
1503 " sa_res_key=\n"); 1503 " sa_res_key=\n");
1504 goto out; 1504 goto out;
1505 } 1505 }
1506 sa_res_key = (u64)tmp_ll; 1506 sa_res_key = (u64)tmp_ll;
1507 break; 1507 break;
1508 /* 1508 /*
1509 * PR APTPL Metadata for Reservation 1509 * PR APTPL Metadata for Reservation
1510 */ 1510 */
1511 case Opt_res_holder: 1511 case Opt_res_holder:
1512 match_int(args, &arg); 1512 match_int(args, &arg);
1513 res_holder = arg; 1513 res_holder = arg;
1514 break; 1514 break;
1515 case Opt_res_type: 1515 case Opt_res_type:
1516 match_int(args, &arg); 1516 match_int(args, &arg);
1517 type = (u8)arg; 1517 type = (u8)arg;
1518 break; 1518 break;
1519 case Opt_res_scope: 1519 case Opt_res_scope:
1520 match_int(args, &arg); 1520 match_int(args, &arg);
1521 scope = (u8)arg; 1521 scope = (u8)arg;
1522 break; 1522 break;
1523 case Opt_res_all_tg_pt: 1523 case Opt_res_all_tg_pt:
1524 match_int(args, &arg); 1524 match_int(args, &arg);
1525 all_tg_pt = (int)arg; 1525 all_tg_pt = (int)arg;
1526 break; 1526 break;
1527 case Opt_mapped_lun: 1527 case Opt_mapped_lun:
1528 match_int(args, &arg); 1528 match_int(args, &arg);
1529 mapped_lun = (u32)arg; 1529 mapped_lun = (u32)arg;
1530 break; 1530 break;
1531 /* 1531 /*
1532 * PR APTPL Metadata for Target Port 1532 * PR APTPL Metadata for Target Port
1533 */ 1533 */
1534 case Opt_target_fabric: 1534 case Opt_target_fabric:
1535 t_fabric = match_strdup(&args[0]); 1535 t_fabric = match_strdup(&args[0]);
1536 if (!t_fabric) { 1536 if (!t_fabric) {
1537 ret = -ENOMEM; 1537 ret = -ENOMEM;
1538 goto out; 1538 goto out;
1539 } 1539 }
1540 break; 1540 break;
1541 case Opt_target_node: 1541 case Opt_target_node:
1542 t_port = match_strdup(&args[0]); 1542 t_port = match_strdup(&args[0]);
1543 if (!t_port) { 1543 if (!t_port) {
1544 ret = -ENOMEM; 1544 ret = -ENOMEM;
1545 goto out; 1545 goto out;
1546 } 1546 }
1547 if (strlen(t_port) >= PR_APTPL_MAX_TPORT_LEN) { 1547 if (strlen(t_port) >= PR_APTPL_MAX_TPORT_LEN) {
1548 pr_err("APTPL metadata target_node=" 1548 pr_err("APTPL metadata target_node="
1549 " exceeds PR_APTPL_MAX_TPORT_LEN: %d\n", 1549 " exceeds PR_APTPL_MAX_TPORT_LEN: %d\n",
1550 PR_APTPL_MAX_TPORT_LEN); 1550 PR_APTPL_MAX_TPORT_LEN);
1551 ret = -EINVAL; 1551 ret = -EINVAL;
1552 break; 1552 break;
1553 } 1553 }
1554 break; 1554 break;
1555 case Opt_tpgt: 1555 case Opt_tpgt:
1556 match_int(args, &arg); 1556 match_int(args, &arg);
1557 tpgt = (u16)arg; 1557 tpgt = (u16)arg;
1558 break; 1558 break;
1559 case Opt_port_rtpi: 1559 case Opt_port_rtpi:
1560 match_int(args, &arg); 1560 match_int(args, &arg);
1561 port_rpti = (u16)arg; 1561 port_rpti = (u16)arg;
1562 break; 1562 break;
1563 case Opt_target_lun: 1563 case Opt_target_lun:
1564 match_int(args, &arg); 1564 match_int(args, &arg);
1565 target_lun = (u32)arg; 1565 target_lun = (u32)arg;
1566 break; 1566 break;
1567 default: 1567 default:
1568 break; 1568 break;
1569 } 1569 }
1570 } 1570 }
1571 1571
1572 if (!i_port || !t_port || !sa_res_key) { 1572 if (!i_port || !t_port || !sa_res_key) {
1573 pr_err("Illegal parameters for APTPL registration\n"); 1573 pr_err("Illegal parameters for APTPL registration\n");
1574 ret = -EINVAL; 1574 ret = -EINVAL;
1575 goto out; 1575 goto out;
1576 } 1576 }
1577 1577
1578 if (res_holder && !(type)) { 1578 if (res_holder && !(type)) {
1579 pr_err("Illegal PR type: 0x%02x for reservation" 1579 pr_err("Illegal PR type: 0x%02x for reservation"
1580 " holder\n", type); 1580 " holder\n", type);
1581 ret = -EINVAL; 1581 ret = -EINVAL;
1582 goto out; 1582 goto out;
1583 } 1583 }
1584 1584
1585 ret = core_scsi3_alloc_aptpl_registration(&su_dev->t10_pr, sa_res_key, 1585 ret = core_scsi3_alloc_aptpl_registration(&su_dev->t10_pr, sa_res_key,
1586 i_port, isid, mapped_lun, t_port, tpgt, target_lun, 1586 i_port, isid, mapped_lun, t_port, tpgt, target_lun,
1587 res_holder, all_tg_pt, type); 1587 res_holder, all_tg_pt, type);
1588 out: 1588 out:
1589 kfree(i_fabric); 1589 kfree(i_fabric);
1590 kfree(i_port); 1590 kfree(i_port);
1591 kfree(isid); 1591 kfree(isid);
1592 kfree(t_fabric); 1592 kfree(t_fabric);
1593 kfree(t_port); 1593 kfree(t_port);
1594 kfree(orig); 1594 kfree(orig);
1595 return (ret == 0) ? count : ret; 1595 return (ret == 0) ? count : ret;
1596 } 1596 }
1597 1597
1598 SE_DEV_PR_ATTR(res_aptpl_metadata, S_IRUGO | S_IWUSR); 1598 SE_DEV_PR_ATTR(res_aptpl_metadata, S_IRUGO | S_IWUSR);
1599 1599
1600 CONFIGFS_EATTR_OPS(target_core_dev_pr, se_subsystem_dev, se_dev_pr_group); 1600 CONFIGFS_EATTR_OPS(target_core_dev_pr, se_subsystem_dev, se_dev_pr_group);
1601 1601
1602 static struct configfs_attribute *target_core_dev_pr_attrs[] = { 1602 static struct configfs_attribute *target_core_dev_pr_attrs[] = {
1603 &target_core_dev_pr_res_holder.attr, 1603 &target_core_dev_pr_res_holder.attr,
1604 &target_core_dev_pr_res_pr_all_tgt_pts.attr, 1604 &target_core_dev_pr_res_pr_all_tgt_pts.attr,
1605 &target_core_dev_pr_res_pr_generation.attr, 1605 &target_core_dev_pr_res_pr_generation.attr,
1606 &target_core_dev_pr_res_pr_holder_tg_port.attr, 1606 &target_core_dev_pr_res_pr_holder_tg_port.attr,
1607 &target_core_dev_pr_res_pr_registered_i_pts.attr, 1607 &target_core_dev_pr_res_pr_registered_i_pts.attr,
1608 &target_core_dev_pr_res_pr_type.attr, 1608 &target_core_dev_pr_res_pr_type.attr,
1609 &target_core_dev_pr_res_type.attr, 1609 &target_core_dev_pr_res_type.attr,
1610 &target_core_dev_pr_res_aptpl_active.attr, 1610 &target_core_dev_pr_res_aptpl_active.attr,
1611 &target_core_dev_pr_res_aptpl_metadata.attr, 1611 &target_core_dev_pr_res_aptpl_metadata.attr,
1612 NULL, 1612 NULL,
1613 }; 1613 };
1614 1614
1615 static struct configfs_item_operations target_core_dev_pr_ops = { 1615 static struct configfs_item_operations target_core_dev_pr_ops = {
1616 .show_attribute = target_core_dev_pr_attr_show, 1616 .show_attribute = target_core_dev_pr_attr_show,
1617 .store_attribute = target_core_dev_pr_attr_store, 1617 .store_attribute = target_core_dev_pr_attr_store,
1618 }; 1618 };
1619 1619
1620 static struct config_item_type target_core_dev_pr_cit = { 1620 static struct config_item_type target_core_dev_pr_cit = {
1621 .ct_item_ops = &target_core_dev_pr_ops, 1621 .ct_item_ops = &target_core_dev_pr_ops,
1622 .ct_attrs = target_core_dev_pr_attrs, 1622 .ct_attrs = target_core_dev_pr_attrs,
1623 .ct_owner = THIS_MODULE, 1623 .ct_owner = THIS_MODULE,
1624 }; 1624 };
1625 1625
1626 /* End functions for struct config_item_type target_core_dev_pr_cit */ 1626 /* End functions for struct config_item_type target_core_dev_pr_cit */
1627 1627
1628 /* Start functions for struct config_item_type target_core_dev_cit */ 1628 /* Start functions for struct config_item_type target_core_dev_cit */
1629 1629
1630 static ssize_t target_core_show_dev_info(void *p, char *page) 1630 static ssize_t target_core_show_dev_info(void *p, char *page)
1631 { 1631 {
1632 struct se_subsystem_dev *se_dev = p; 1632 struct se_subsystem_dev *se_dev = p;
1633 struct se_hba *hba = se_dev->se_dev_hba; 1633 struct se_hba *hba = se_dev->se_dev_hba;
1634 struct se_subsystem_api *t = hba->transport; 1634 struct se_subsystem_api *t = hba->transport;
1635 int bl = 0; 1635 int bl = 0;
1636 ssize_t read_bytes = 0; 1636 ssize_t read_bytes = 0;
1637 1637
1638 if (!se_dev->se_dev_ptr) 1638 if (!se_dev->se_dev_ptr)
1639 return -ENODEV; 1639 return -ENODEV;
1640 1640
1641 transport_dump_dev_state(se_dev->se_dev_ptr, page, &bl); 1641 transport_dump_dev_state(se_dev->se_dev_ptr, page, &bl);
1642 read_bytes += bl; 1642 read_bytes += bl;
1643 read_bytes += t->show_configfs_dev_params(hba, se_dev, page+read_bytes); 1643 read_bytes += t->show_configfs_dev_params(hba, se_dev, page+read_bytes);
1644 return read_bytes; 1644 return read_bytes;
1645 } 1645 }
1646 1646
1647 static struct target_core_configfs_attribute target_core_attr_dev_info = { 1647 static struct target_core_configfs_attribute target_core_attr_dev_info = {
1648 .attr = { .ca_owner = THIS_MODULE, 1648 .attr = { .ca_owner = THIS_MODULE,
1649 .ca_name = "info", 1649 .ca_name = "info",
1650 .ca_mode = S_IRUGO }, 1650 .ca_mode = S_IRUGO },
1651 .show = target_core_show_dev_info, 1651 .show = target_core_show_dev_info,
1652 .store = NULL, 1652 .store = NULL,
1653 }; 1653 };
1654 1654
1655 static ssize_t target_core_store_dev_control( 1655 static ssize_t target_core_store_dev_control(
1656 void *p, 1656 void *p,
1657 const char *page, 1657 const char *page,
1658 size_t count) 1658 size_t count)
1659 { 1659 {
1660 struct se_subsystem_dev *se_dev = p; 1660 struct se_subsystem_dev *se_dev = p;
1661 struct se_hba *hba = se_dev->se_dev_hba; 1661 struct se_hba *hba = se_dev->se_dev_hba;
1662 struct se_subsystem_api *t = hba->transport; 1662 struct se_subsystem_api *t = hba->transport;
1663 1663
1664 if (!se_dev->se_dev_su_ptr) { 1664 if (!se_dev->se_dev_su_ptr) {
1665 pr_err("Unable to locate struct se_subsystem_dev>se" 1665 pr_err("Unable to locate struct se_subsystem_dev>se"
1666 "_dev_su_ptr\n"); 1666 "_dev_su_ptr\n");
1667 return -EINVAL; 1667 return -EINVAL;
1668 } 1668 }
1669 1669
1670 return t->set_configfs_dev_params(hba, se_dev, page, count); 1670 return t->set_configfs_dev_params(hba, se_dev, page, count);
1671 } 1671 }
1672 1672
1673 static struct target_core_configfs_attribute target_core_attr_dev_control = { 1673 static struct target_core_configfs_attribute target_core_attr_dev_control = {
1674 .attr = { .ca_owner = THIS_MODULE, 1674 .attr = { .ca_owner = THIS_MODULE,
1675 .ca_name = "control", 1675 .ca_name = "control",
1676 .ca_mode = S_IWUSR }, 1676 .ca_mode = S_IWUSR },
1677 .show = NULL, 1677 .show = NULL,
1678 .store = target_core_store_dev_control, 1678 .store = target_core_store_dev_control,
1679 }; 1679 };
1680 1680
1681 static ssize_t target_core_show_dev_alias(void *p, char *page) 1681 static ssize_t target_core_show_dev_alias(void *p, char *page)
1682 { 1682 {
1683 struct se_subsystem_dev *se_dev = p; 1683 struct se_subsystem_dev *se_dev = p;
1684 1684
1685 if (!(se_dev->su_dev_flags & SDF_USING_ALIAS)) 1685 if (!(se_dev->su_dev_flags & SDF_USING_ALIAS))
1686 return 0; 1686 return 0;
1687 1687
1688 return snprintf(page, PAGE_SIZE, "%s\n", se_dev->se_dev_alias); 1688 return snprintf(page, PAGE_SIZE, "%s\n", se_dev->se_dev_alias);
1689 } 1689 }
1690 1690
1691 static ssize_t target_core_store_dev_alias( 1691 static ssize_t target_core_store_dev_alias(
1692 void *p, 1692 void *p,
1693 const char *page, 1693 const char *page,
1694 size_t count) 1694 size_t count)
1695 { 1695 {
1696 struct se_subsystem_dev *se_dev = p; 1696 struct se_subsystem_dev *se_dev = p;
1697 struct se_hba *hba = se_dev->se_dev_hba; 1697 struct se_hba *hba = se_dev->se_dev_hba;
1698 ssize_t read_bytes; 1698 ssize_t read_bytes;
1699 1699
1700 if (count > (SE_DEV_ALIAS_LEN-1)) { 1700 if (count > (SE_DEV_ALIAS_LEN-1)) {
1701 pr_err("alias count: %d exceeds" 1701 pr_err("alias count: %d exceeds"
1702 " SE_DEV_ALIAS_LEN-1: %u\n", (int)count, 1702 " SE_DEV_ALIAS_LEN-1: %u\n", (int)count,
1703 SE_DEV_ALIAS_LEN-1); 1703 SE_DEV_ALIAS_LEN-1);
1704 return -EINVAL; 1704 return -EINVAL;
1705 } 1705 }
1706 1706
1707 read_bytes = snprintf(&se_dev->se_dev_alias[0], SE_DEV_ALIAS_LEN, 1707 read_bytes = snprintf(&se_dev->se_dev_alias[0], SE_DEV_ALIAS_LEN,
1708 "%s", page); 1708 "%s", page);
1709 if (!read_bytes) 1709 if (!read_bytes)
1710 return -EINVAL; 1710 return -EINVAL;
1711 if (se_dev->se_dev_alias[read_bytes - 1] == '\n') 1711 if (se_dev->se_dev_alias[read_bytes - 1] == '\n')
1712 se_dev->se_dev_alias[read_bytes - 1] = '\0'; 1712 se_dev->se_dev_alias[read_bytes - 1] = '\0';
1713 1713
1714 se_dev->su_dev_flags |= SDF_USING_ALIAS; 1714 se_dev->su_dev_flags |= SDF_USING_ALIAS;
1715 1715
1716 pr_debug("Target_Core_ConfigFS: %s/%s set alias: %s\n", 1716 pr_debug("Target_Core_ConfigFS: %s/%s set alias: %s\n",
1717 config_item_name(&hba->hba_group.cg_item), 1717 config_item_name(&hba->hba_group.cg_item),
1718 config_item_name(&se_dev->se_dev_group.cg_item), 1718 config_item_name(&se_dev->se_dev_group.cg_item),
1719 se_dev->se_dev_alias); 1719 se_dev->se_dev_alias);
1720 1720
1721 return read_bytes; 1721 return read_bytes;
1722 } 1722 }
1723 1723
1724 static struct target_core_configfs_attribute target_core_attr_dev_alias = { 1724 static struct target_core_configfs_attribute target_core_attr_dev_alias = {
1725 .attr = { .ca_owner = THIS_MODULE, 1725 .attr = { .ca_owner = THIS_MODULE,
1726 .ca_name = "alias", 1726 .ca_name = "alias",
1727 .ca_mode = S_IRUGO | S_IWUSR }, 1727 .ca_mode = S_IRUGO | S_IWUSR },
1728 .show = target_core_show_dev_alias, 1728 .show = target_core_show_dev_alias,
1729 .store = target_core_store_dev_alias, 1729 .store = target_core_store_dev_alias,
1730 }; 1730 };
1731 1731
1732 static ssize_t target_core_show_dev_udev_path(void *p, char *page) 1732 static ssize_t target_core_show_dev_udev_path(void *p, char *page)
1733 { 1733 {
1734 struct se_subsystem_dev *se_dev = p; 1734 struct se_subsystem_dev *se_dev = p;
1735 1735
1736 if (!(se_dev->su_dev_flags & SDF_USING_UDEV_PATH)) 1736 if (!(se_dev->su_dev_flags & SDF_USING_UDEV_PATH))
1737 return 0; 1737 return 0;
1738 1738
1739 return snprintf(page, PAGE_SIZE, "%s\n", se_dev->se_dev_udev_path); 1739 return snprintf(page, PAGE_SIZE, "%s\n", se_dev->se_dev_udev_path);
1740 } 1740 }
1741 1741
1742 static ssize_t target_core_store_dev_udev_path( 1742 static ssize_t target_core_store_dev_udev_path(
1743 void *p, 1743 void *p,
1744 const char *page, 1744 const char *page,
1745 size_t count) 1745 size_t count)
1746 { 1746 {
1747 struct se_subsystem_dev *se_dev = p; 1747 struct se_subsystem_dev *se_dev = p;
1748 struct se_hba *hba = se_dev->se_dev_hba; 1748 struct se_hba *hba = se_dev->se_dev_hba;
1749 ssize_t read_bytes; 1749 ssize_t read_bytes;
1750 1750
1751 if (count > (SE_UDEV_PATH_LEN-1)) { 1751 if (count > (SE_UDEV_PATH_LEN-1)) {
1752 pr_err("udev_path count: %d exceeds" 1752 pr_err("udev_path count: %d exceeds"
1753 " SE_UDEV_PATH_LEN-1: %u\n", (int)count, 1753 " SE_UDEV_PATH_LEN-1: %u\n", (int)count,
1754 SE_UDEV_PATH_LEN-1); 1754 SE_UDEV_PATH_LEN-1);
1755 return -EINVAL; 1755 return -EINVAL;
1756 } 1756 }
1757 1757
1758 read_bytes = snprintf(&se_dev->se_dev_udev_path[0], SE_UDEV_PATH_LEN, 1758 read_bytes = snprintf(&se_dev->se_dev_udev_path[0], SE_UDEV_PATH_LEN,
1759 "%s", page); 1759 "%s", page);
1760 if (!read_bytes) 1760 if (!read_bytes)
1761 return -EINVAL; 1761 return -EINVAL;
1762 if (se_dev->se_dev_udev_path[read_bytes - 1] == '\n') 1762 if (se_dev->se_dev_udev_path[read_bytes - 1] == '\n')
1763 se_dev->se_dev_udev_path[read_bytes - 1] = '\0'; 1763 se_dev->se_dev_udev_path[read_bytes - 1] = '\0';
1764 1764
1765 se_dev->su_dev_flags |= SDF_USING_UDEV_PATH; 1765 se_dev->su_dev_flags |= SDF_USING_UDEV_PATH;
1766 1766
1767 pr_debug("Target_Core_ConfigFS: %s/%s set udev_path: %s\n", 1767 pr_debug("Target_Core_ConfigFS: %s/%s set udev_path: %s\n",
1768 config_item_name(&hba->hba_group.cg_item), 1768 config_item_name(&hba->hba_group.cg_item),
1769 config_item_name(&se_dev->se_dev_group.cg_item), 1769 config_item_name(&se_dev->se_dev_group.cg_item),
1770 se_dev->se_dev_udev_path); 1770 se_dev->se_dev_udev_path);
1771 1771
1772 return read_bytes; 1772 return read_bytes;
1773 } 1773 }
1774 1774
1775 static struct target_core_configfs_attribute target_core_attr_dev_udev_path = { 1775 static struct target_core_configfs_attribute target_core_attr_dev_udev_path = {
1776 .attr = { .ca_owner = THIS_MODULE, 1776 .attr = { .ca_owner = THIS_MODULE,
1777 .ca_name = "udev_path", 1777 .ca_name = "udev_path",
1778 .ca_mode = S_IRUGO | S_IWUSR }, 1778 .ca_mode = S_IRUGO | S_IWUSR },
1779 .show = target_core_show_dev_udev_path, 1779 .show = target_core_show_dev_udev_path,
1780 .store = target_core_store_dev_udev_path, 1780 .store = target_core_store_dev_udev_path,
1781 }; 1781 };
1782 1782
1783 static ssize_t target_core_store_dev_enable( 1783 static ssize_t target_core_store_dev_enable(
1784 void *p, 1784 void *p,
1785 const char *page, 1785 const char *page,
1786 size_t count) 1786 size_t count)
1787 { 1787 {
1788 struct se_subsystem_dev *se_dev = p; 1788 struct se_subsystem_dev *se_dev = p;
1789 struct se_device *dev; 1789 struct se_device *dev;
1790 struct se_hba *hba = se_dev->se_dev_hba; 1790 struct se_hba *hba = se_dev->se_dev_hba;
1791 struct se_subsystem_api *t = hba->transport; 1791 struct se_subsystem_api *t = hba->transport;
1792 char *ptr; 1792 char *ptr;
1793 1793
1794 ptr = strstr(page, "1"); 1794 ptr = strstr(page, "1");
1795 if (!ptr) { 1795 if (!ptr) {
1796 pr_err("For dev_enable ops, only valid value" 1796 pr_err("For dev_enable ops, only valid value"
1797 " is \"1\"\n"); 1797 " is \"1\"\n");
1798 return -EINVAL; 1798 return -EINVAL;
1799 } 1799 }
1800 if (se_dev->se_dev_ptr) { 1800 if (se_dev->se_dev_ptr) {
1801 pr_err("se_dev->se_dev_ptr already set for storage" 1801 pr_err("se_dev->se_dev_ptr already set for storage"
1802 " object\n"); 1802 " object\n");
1803 return -EEXIST; 1803 return -EEXIST;
1804 } 1804 }
1805 1805
1806 if (t->check_configfs_dev_params(hba, se_dev) < 0) 1806 if (t->check_configfs_dev_params(hba, se_dev) < 0)
1807 return -EINVAL; 1807 return -EINVAL;
1808 1808
1809 dev = t->create_virtdevice(hba, se_dev, se_dev->se_dev_su_ptr); 1809 dev = t->create_virtdevice(hba, se_dev, se_dev->se_dev_su_ptr);
1810 if (IS_ERR(dev)) 1810 if (IS_ERR(dev))
1811 return PTR_ERR(dev); 1811 return PTR_ERR(dev);
1812 else if (!dev) 1812 else if (!dev)
1813 return -EINVAL; 1813 return -EINVAL;
1814 1814
1815 se_dev->se_dev_ptr = dev; 1815 se_dev->se_dev_ptr = dev;
1816 pr_debug("Target_Core_ConfigFS: Registered se_dev->se_dev_ptr:" 1816 pr_debug("Target_Core_ConfigFS: Registered se_dev->se_dev_ptr:"
1817 " %p\n", se_dev->se_dev_ptr); 1817 " %p\n", se_dev->se_dev_ptr);
1818 1818
1819 return count; 1819 return count;
1820 } 1820 }
1821 1821
1822 static struct target_core_configfs_attribute target_core_attr_dev_enable = { 1822 static struct target_core_configfs_attribute target_core_attr_dev_enable = {
1823 .attr = { .ca_owner = THIS_MODULE, 1823 .attr = { .ca_owner = THIS_MODULE,
1824 .ca_name = "enable", 1824 .ca_name = "enable",
1825 .ca_mode = S_IWUSR }, 1825 .ca_mode = S_IWUSR },
1826 .show = NULL, 1826 .show = NULL,
1827 .store = target_core_store_dev_enable, 1827 .store = target_core_store_dev_enable,
1828 }; 1828 };
1829 1829
1830 static ssize_t target_core_show_alua_lu_gp(void *p, char *page) 1830 static ssize_t target_core_show_alua_lu_gp(void *p, char *page)
1831 { 1831 {
1832 struct se_device *dev; 1832 struct se_device *dev;
1833 struct se_subsystem_dev *su_dev = p; 1833 struct se_subsystem_dev *su_dev = p;
1834 struct config_item *lu_ci; 1834 struct config_item *lu_ci;
1835 struct t10_alua_lu_gp *lu_gp; 1835 struct t10_alua_lu_gp *lu_gp;
1836 struct t10_alua_lu_gp_member *lu_gp_mem; 1836 struct t10_alua_lu_gp_member *lu_gp_mem;
1837 ssize_t len = 0; 1837 ssize_t len = 0;
1838 1838
1839 dev = su_dev->se_dev_ptr; 1839 dev = su_dev->se_dev_ptr;
1840 if (!dev) 1840 if (!dev)
1841 return -ENODEV; 1841 return -ENODEV;
1842 1842
1843 if (su_dev->t10_alua.alua_type != SPC3_ALUA_EMULATED) 1843 if (su_dev->t10_alua.alua_type != SPC3_ALUA_EMULATED)
1844 return len; 1844 return len;
1845 1845
1846 lu_gp_mem = dev->dev_alua_lu_gp_mem; 1846 lu_gp_mem = dev->dev_alua_lu_gp_mem;
1847 if (!lu_gp_mem) { 1847 if (!lu_gp_mem) {
1848 pr_err("NULL struct se_device->dev_alua_lu_gp_mem" 1848 pr_err("NULL struct se_device->dev_alua_lu_gp_mem"
1849 " pointer\n"); 1849 " pointer\n");
1850 return -EINVAL; 1850 return -EINVAL;
1851 } 1851 }
1852 1852
1853 spin_lock(&lu_gp_mem->lu_gp_mem_lock); 1853 spin_lock(&lu_gp_mem->lu_gp_mem_lock);
1854 lu_gp = lu_gp_mem->lu_gp; 1854 lu_gp = lu_gp_mem->lu_gp;
1855 if (lu_gp) { 1855 if (lu_gp) {
1856 lu_ci = &lu_gp->lu_gp_group.cg_item; 1856 lu_ci = &lu_gp->lu_gp_group.cg_item;
1857 len += sprintf(page, "LU Group Alias: %s\nLU Group ID: %hu\n", 1857 len += sprintf(page, "LU Group Alias: %s\nLU Group ID: %hu\n",
1858 config_item_name(lu_ci), lu_gp->lu_gp_id); 1858 config_item_name(lu_ci), lu_gp->lu_gp_id);
1859 } 1859 }
1860 spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 1860 spin_unlock(&lu_gp_mem->lu_gp_mem_lock);
1861 1861
1862 return len; 1862 return len;
1863 } 1863 }
1864 1864
1865 static ssize_t target_core_store_alua_lu_gp( 1865 static ssize_t target_core_store_alua_lu_gp(
1866 void *p, 1866 void *p,
1867 const char *page, 1867 const char *page,
1868 size_t count) 1868 size_t count)
1869 { 1869 {
1870 struct se_device *dev; 1870 struct se_device *dev;
1871 struct se_subsystem_dev *su_dev = p; 1871 struct se_subsystem_dev *su_dev = p;
1872 struct se_hba *hba = su_dev->se_dev_hba; 1872 struct se_hba *hba = su_dev->se_dev_hba;
1873 struct t10_alua_lu_gp *lu_gp = NULL, *lu_gp_new = NULL; 1873 struct t10_alua_lu_gp *lu_gp = NULL, *lu_gp_new = NULL;
1874 struct t10_alua_lu_gp_member *lu_gp_mem; 1874 struct t10_alua_lu_gp_member *lu_gp_mem;
1875 unsigned char buf[LU_GROUP_NAME_BUF]; 1875 unsigned char buf[LU_GROUP_NAME_BUF];
1876 int move = 0; 1876 int move = 0;
1877 1877
1878 dev = su_dev->se_dev_ptr; 1878 dev = su_dev->se_dev_ptr;
1879 if (!dev) 1879 if (!dev)
1880 return -ENODEV; 1880 return -ENODEV;
1881 1881
1882 if (su_dev->t10_alua.alua_type != SPC3_ALUA_EMULATED) { 1882 if (su_dev->t10_alua.alua_type != SPC3_ALUA_EMULATED) {
1883 pr_warn("SPC3_ALUA_EMULATED not enabled for %s/%s\n", 1883 pr_warn("SPC3_ALUA_EMULATED not enabled for %s/%s\n",
1884 config_item_name(&hba->hba_group.cg_item), 1884 config_item_name(&hba->hba_group.cg_item),
1885 config_item_name(&su_dev->se_dev_group.cg_item)); 1885 config_item_name(&su_dev->se_dev_group.cg_item));
1886 return -EINVAL; 1886 return -EINVAL;
1887 } 1887 }
1888 if (count > LU_GROUP_NAME_BUF) { 1888 if (count > LU_GROUP_NAME_BUF) {
1889 pr_err("ALUA LU Group Alias too large!\n"); 1889 pr_err("ALUA LU Group Alias too large!\n");
1890 return -EINVAL; 1890 return -EINVAL;
1891 } 1891 }
1892 memset(buf, 0, LU_GROUP_NAME_BUF); 1892 memset(buf, 0, LU_GROUP_NAME_BUF);
1893 memcpy(buf, page, count); 1893 memcpy(buf, page, count);
1894 /* 1894 /*
1895 * Any ALUA logical unit alias besides "NULL" means we will be 1895 * Any ALUA logical unit alias besides "NULL" means we will be
1896 * making a new group association. 1896 * making a new group association.
1897 */ 1897 */
1898 if (strcmp(strstrip(buf), "NULL")) { 1898 if (strcmp(strstrip(buf), "NULL")) {
1899 /* 1899 /*
1900 * core_alua_get_lu_gp_by_name() will increment reference to 1900 * core_alua_get_lu_gp_by_name() will increment reference to
1901 * struct t10_alua_lu_gp. This reference is released with 1901 * struct t10_alua_lu_gp. This reference is released with
1902 * core_alua_get_lu_gp_by_name below(). 1902 * core_alua_get_lu_gp_by_name below().
1903 */ 1903 */
1904 lu_gp_new = core_alua_get_lu_gp_by_name(strstrip(buf)); 1904 lu_gp_new = core_alua_get_lu_gp_by_name(strstrip(buf));
1905 if (!lu_gp_new) 1905 if (!lu_gp_new)
1906 return -ENODEV; 1906 return -ENODEV;
1907 } 1907 }
1908 lu_gp_mem = dev->dev_alua_lu_gp_mem; 1908 lu_gp_mem = dev->dev_alua_lu_gp_mem;
1909 if (!lu_gp_mem) { 1909 if (!lu_gp_mem) {
1910 if (lu_gp_new) 1910 if (lu_gp_new)
1911 core_alua_put_lu_gp_from_name(lu_gp_new); 1911 core_alua_put_lu_gp_from_name(lu_gp_new);
1912 pr_err("NULL struct se_device->dev_alua_lu_gp_mem" 1912 pr_err("NULL struct se_device->dev_alua_lu_gp_mem"
1913 " pointer\n"); 1913 " pointer\n");
1914 return -EINVAL; 1914 return -EINVAL;
1915 } 1915 }
1916 1916
1917 spin_lock(&lu_gp_mem->lu_gp_mem_lock); 1917 spin_lock(&lu_gp_mem->lu_gp_mem_lock);
1918 lu_gp = lu_gp_mem->lu_gp; 1918 lu_gp = lu_gp_mem->lu_gp;
1919 if (lu_gp) { 1919 if (lu_gp) {
1920 /* 1920 /*
1921 * Clearing an existing lu_gp association, and replacing 1921 * Clearing an existing lu_gp association, and replacing
1922 * with NULL 1922 * with NULL
1923 */ 1923 */
1924 if (!lu_gp_new) { 1924 if (!lu_gp_new) {
1925 pr_debug("Target_Core_ConfigFS: Releasing %s/%s" 1925 pr_debug("Target_Core_ConfigFS: Releasing %s/%s"
1926 " from ALUA LU Group: core/alua/lu_gps/%s, ID:" 1926 " from ALUA LU Group: core/alua/lu_gps/%s, ID:"
1927 " %hu\n", 1927 " %hu\n",
1928 config_item_name(&hba->hba_group.cg_item), 1928 config_item_name(&hba->hba_group.cg_item),
1929 config_item_name(&su_dev->se_dev_group.cg_item), 1929 config_item_name(&su_dev->se_dev_group.cg_item),
1930 config_item_name(&lu_gp->lu_gp_group.cg_item), 1930 config_item_name(&lu_gp->lu_gp_group.cg_item),
1931 lu_gp->lu_gp_id); 1931 lu_gp->lu_gp_id);
1932 1932
1933 __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); 1933 __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp);
1934 spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 1934 spin_unlock(&lu_gp_mem->lu_gp_mem_lock);
1935 1935
1936 return count; 1936 return count;
1937 } 1937 }
1938 /* 1938 /*
1939 * Removing existing association of lu_gp_mem with lu_gp 1939 * Removing existing association of lu_gp_mem with lu_gp
1940 */ 1940 */
1941 __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); 1941 __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp);
1942 move = 1; 1942 move = 1;
1943 } 1943 }
1944 /* 1944 /*
1945 * Associate lu_gp_mem with lu_gp_new. 1945 * Associate lu_gp_mem with lu_gp_new.
1946 */ 1946 */
1947 __core_alua_attach_lu_gp_mem(lu_gp_mem, lu_gp_new); 1947 __core_alua_attach_lu_gp_mem(lu_gp_mem, lu_gp_new);
1948 spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 1948 spin_unlock(&lu_gp_mem->lu_gp_mem_lock);
1949 1949
1950 pr_debug("Target_Core_ConfigFS: %s %s/%s to ALUA LU Group:" 1950 pr_debug("Target_Core_ConfigFS: %s %s/%s to ALUA LU Group:"
1951 " core/alua/lu_gps/%s, ID: %hu\n", 1951 " core/alua/lu_gps/%s, ID: %hu\n",
1952 (move) ? "Moving" : "Adding", 1952 (move) ? "Moving" : "Adding",
1953 config_item_name(&hba->hba_group.cg_item), 1953 config_item_name(&hba->hba_group.cg_item),
1954 config_item_name(&su_dev->se_dev_group.cg_item), 1954 config_item_name(&su_dev->se_dev_group.cg_item),
1955 config_item_name(&lu_gp_new->lu_gp_group.cg_item), 1955 config_item_name(&lu_gp_new->lu_gp_group.cg_item),
1956 lu_gp_new->lu_gp_id); 1956 lu_gp_new->lu_gp_id);
1957 1957
1958 core_alua_put_lu_gp_from_name(lu_gp_new); 1958 core_alua_put_lu_gp_from_name(lu_gp_new);
1959 return count; 1959 return count;
1960 } 1960 }
1961 1961
1962 static struct target_core_configfs_attribute target_core_attr_dev_alua_lu_gp = { 1962 static struct target_core_configfs_attribute target_core_attr_dev_alua_lu_gp = {
1963 .attr = { .ca_owner = THIS_MODULE, 1963 .attr = { .ca_owner = THIS_MODULE,
1964 .ca_name = "alua_lu_gp", 1964 .ca_name = "alua_lu_gp",
1965 .ca_mode = S_IRUGO | S_IWUSR }, 1965 .ca_mode = S_IRUGO | S_IWUSR },
1966 .show = target_core_show_alua_lu_gp, 1966 .show = target_core_show_alua_lu_gp,
1967 .store = target_core_store_alua_lu_gp, 1967 .store = target_core_store_alua_lu_gp,
1968 }; 1968 };
1969 1969
1970 static struct configfs_attribute *lio_core_dev_attrs[] = { 1970 static struct configfs_attribute *lio_core_dev_attrs[] = {
1971 &target_core_attr_dev_info.attr, 1971 &target_core_attr_dev_info.attr,
1972 &target_core_attr_dev_control.attr, 1972 &target_core_attr_dev_control.attr,
1973 &target_core_attr_dev_alias.attr, 1973 &target_core_attr_dev_alias.attr,
1974 &target_core_attr_dev_udev_path.attr, 1974 &target_core_attr_dev_udev_path.attr,
1975 &target_core_attr_dev_enable.attr, 1975 &target_core_attr_dev_enable.attr,
1976 &target_core_attr_dev_alua_lu_gp.attr, 1976 &target_core_attr_dev_alua_lu_gp.attr,
1977 NULL, 1977 NULL,
1978 }; 1978 };
1979 1979
1980 static void target_core_dev_release(struct config_item *item) 1980 static void target_core_dev_release(struct config_item *item)
1981 { 1981 {
1982 struct se_subsystem_dev *se_dev = container_of(to_config_group(item), 1982 struct se_subsystem_dev *se_dev = container_of(to_config_group(item),
1983 struct se_subsystem_dev, se_dev_group); 1983 struct se_subsystem_dev, se_dev_group);
1984 struct se_hba *hba = item_to_hba(&se_dev->se_dev_hba->hba_group.cg_item); 1984 struct se_hba *hba = item_to_hba(&se_dev->se_dev_hba->hba_group.cg_item);
1985 struct se_subsystem_api *t = hba->transport; 1985 struct se_subsystem_api *t = hba->transport;
1986 struct config_group *dev_cg = &se_dev->se_dev_group; 1986 struct config_group *dev_cg = &se_dev->se_dev_group;
1987 1987
1988 kfree(dev_cg->default_groups); 1988 kfree(dev_cg->default_groups);
1989 /* 1989 /*
1990 * This pointer will set when the storage is enabled with: 1990 * This pointer will set when the storage is enabled with:
1991 *`echo 1 > $CONFIGFS/core/$HBA/$DEV/dev_enable` 1991 *`echo 1 > $CONFIGFS/core/$HBA/$DEV/dev_enable`
1992 */ 1992 */
1993 if (se_dev->se_dev_ptr) { 1993 if (se_dev->se_dev_ptr) {
1994 pr_debug("Target_Core_ConfigFS: Calling se_free_" 1994 pr_debug("Target_Core_ConfigFS: Calling se_free_"
1995 "virtual_device() for se_dev_ptr: %p\n", 1995 "virtual_device() for se_dev_ptr: %p\n",
1996 se_dev->se_dev_ptr); 1996 se_dev->se_dev_ptr);
1997 1997
1998 se_free_virtual_device(se_dev->se_dev_ptr, hba); 1998 se_free_virtual_device(se_dev->se_dev_ptr, hba);
1999 } else { 1999 } else {
2000 /* 2000 /*
2001 * Release struct se_subsystem_dev->se_dev_su_ptr.. 2001 * Release struct se_subsystem_dev->se_dev_su_ptr..
2002 */ 2002 */
2003 pr_debug("Target_Core_ConfigFS: Calling t->free_" 2003 pr_debug("Target_Core_ConfigFS: Calling t->free_"
2004 "device() for se_dev_su_ptr: %p\n", 2004 "device() for se_dev_su_ptr: %p\n",
2005 se_dev->se_dev_su_ptr); 2005 se_dev->se_dev_su_ptr);
2006 2006
2007 t->free_device(se_dev->se_dev_su_ptr); 2007 t->free_device(se_dev->se_dev_su_ptr);
2008 } 2008 }
2009 2009
2010 pr_debug("Target_Core_ConfigFS: Deallocating se_subsystem" 2010 pr_debug("Target_Core_ConfigFS: Deallocating se_subsystem"
2011 "_dev_t: %p\n", se_dev); 2011 "_dev_t: %p\n", se_dev);
2012 kfree(se_dev); 2012 kfree(se_dev);
2013 } 2013 }
2014 2014
2015 static ssize_t target_core_dev_show(struct config_item *item, 2015 static ssize_t target_core_dev_show(struct config_item *item,
2016 struct configfs_attribute *attr, 2016 struct configfs_attribute *attr,
2017 char *page) 2017 char *page)
2018 { 2018 {
2019 struct se_subsystem_dev *se_dev = container_of( 2019 struct se_subsystem_dev *se_dev = container_of(
2020 to_config_group(item), struct se_subsystem_dev, 2020 to_config_group(item), struct se_subsystem_dev,
2021 se_dev_group); 2021 se_dev_group);
2022 struct target_core_configfs_attribute *tc_attr = container_of( 2022 struct target_core_configfs_attribute *tc_attr = container_of(
2023 attr, struct target_core_configfs_attribute, attr); 2023 attr, struct target_core_configfs_attribute, attr);
2024 2024
2025 if (!tc_attr->show) 2025 if (!tc_attr->show)
2026 return -EINVAL; 2026 return -EINVAL;
2027 2027
2028 return tc_attr->show(se_dev, page); 2028 return tc_attr->show(se_dev, page);
2029 } 2029 }
2030 2030
2031 static ssize_t target_core_dev_store(struct config_item *item, 2031 static ssize_t target_core_dev_store(struct config_item *item,
2032 struct configfs_attribute *attr, 2032 struct configfs_attribute *attr,
2033 const char *page, size_t count) 2033 const char *page, size_t count)
2034 { 2034 {
2035 struct se_subsystem_dev *se_dev = container_of( 2035 struct se_subsystem_dev *se_dev = container_of(
2036 to_config_group(item), struct se_subsystem_dev, 2036 to_config_group(item), struct se_subsystem_dev,
2037 se_dev_group); 2037 se_dev_group);
2038 struct target_core_configfs_attribute *tc_attr = container_of( 2038 struct target_core_configfs_attribute *tc_attr = container_of(
2039 attr, struct target_core_configfs_attribute, attr); 2039 attr, struct target_core_configfs_attribute, attr);
2040 2040
2041 if (!tc_attr->store) 2041 if (!tc_attr->store)
2042 return -EINVAL; 2042 return -EINVAL;
2043 2043
2044 return tc_attr->store(se_dev, page, count); 2044 return tc_attr->store(se_dev, page, count);
2045 } 2045 }
2046 2046
2047 static struct configfs_item_operations target_core_dev_item_ops = { 2047 static struct configfs_item_operations target_core_dev_item_ops = {
2048 .release = target_core_dev_release, 2048 .release = target_core_dev_release,
2049 .show_attribute = target_core_dev_show, 2049 .show_attribute = target_core_dev_show,
2050 .store_attribute = target_core_dev_store, 2050 .store_attribute = target_core_dev_store,
2051 }; 2051 };
2052 2052
2053 static struct config_item_type target_core_dev_cit = { 2053 static struct config_item_type target_core_dev_cit = {
2054 .ct_item_ops = &target_core_dev_item_ops, 2054 .ct_item_ops = &target_core_dev_item_ops,
2055 .ct_attrs = lio_core_dev_attrs, 2055 .ct_attrs = lio_core_dev_attrs,
2056 .ct_owner = THIS_MODULE, 2056 .ct_owner = THIS_MODULE,
2057 }; 2057 };
2058 2058
2059 /* End functions for struct config_item_type target_core_dev_cit */ 2059 /* End functions for struct config_item_type target_core_dev_cit */
2060 2060
2061 /* Start functions for struct config_item_type target_core_alua_lu_gp_cit */ 2061 /* Start functions for struct config_item_type target_core_alua_lu_gp_cit */
2062 2062
2063 CONFIGFS_EATTR_STRUCT(target_core_alua_lu_gp, t10_alua_lu_gp); 2063 CONFIGFS_EATTR_STRUCT(target_core_alua_lu_gp, t10_alua_lu_gp);
2064 #define SE_DEV_ALUA_LU_ATTR(_name, _mode) \ 2064 #define SE_DEV_ALUA_LU_ATTR(_name, _mode) \
2065 static struct target_core_alua_lu_gp_attribute \ 2065 static struct target_core_alua_lu_gp_attribute \
2066 target_core_alua_lu_gp_##_name = \ 2066 target_core_alua_lu_gp_##_name = \
2067 __CONFIGFS_EATTR(_name, _mode, \ 2067 __CONFIGFS_EATTR(_name, _mode, \
2068 target_core_alua_lu_gp_show_attr_##_name, \ 2068 target_core_alua_lu_gp_show_attr_##_name, \
2069 target_core_alua_lu_gp_store_attr_##_name); 2069 target_core_alua_lu_gp_store_attr_##_name);
2070 2070
2071 #define SE_DEV_ALUA_LU_ATTR_RO(_name) \ 2071 #define SE_DEV_ALUA_LU_ATTR_RO(_name) \
2072 static struct target_core_alua_lu_gp_attribute \ 2072 static struct target_core_alua_lu_gp_attribute \
2073 target_core_alua_lu_gp_##_name = \ 2073 target_core_alua_lu_gp_##_name = \
2074 __CONFIGFS_EATTR_RO(_name, \ 2074 __CONFIGFS_EATTR_RO(_name, \
2075 target_core_alua_lu_gp_show_attr_##_name); 2075 target_core_alua_lu_gp_show_attr_##_name);
2076 2076
2077 /* 2077 /*
2078 * lu_gp_id 2078 * lu_gp_id
2079 */ 2079 */
2080 static ssize_t target_core_alua_lu_gp_show_attr_lu_gp_id( 2080 static ssize_t target_core_alua_lu_gp_show_attr_lu_gp_id(
2081 struct t10_alua_lu_gp *lu_gp, 2081 struct t10_alua_lu_gp *lu_gp,
2082 char *page) 2082 char *page)
2083 { 2083 {
2084 if (!lu_gp->lu_gp_valid_id) 2084 if (!lu_gp->lu_gp_valid_id)
2085 return 0; 2085 return 0;
2086 2086
2087 return sprintf(page, "%hu\n", lu_gp->lu_gp_id); 2087 return sprintf(page, "%hu\n", lu_gp->lu_gp_id);
2088 } 2088 }
2089 2089
2090 static ssize_t target_core_alua_lu_gp_store_attr_lu_gp_id( 2090 static ssize_t target_core_alua_lu_gp_store_attr_lu_gp_id(
2091 struct t10_alua_lu_gp *lu_gp, 2091 struct t10_alua_lu_gp *lu_gp,
2092 const char *page, 2092 const char *page,
2093 size_t count) 2093 size_t count)
2094 { 2094 {
2095 struct config_group *alua_lu_gp_cg = &lu_gp->lu_gp_group; 2095 struct config_group *alua_lu_gp_cg = &lu_gp->lu_gp_group;
2096 unsigned long lu_gp_id; 2096 unsigned long lu_gp_id;
2097 int ret; 2097 int ret;
2098 2098
2099 ret = strict_strtoul(page, 0, &lu_gp_id); 2099 ret = strict_strtoul(page, 0, &lu_gp_id);
2100 if (ret < 0) { 2100 if (ret < 0) {
2101 pr_err("strict_strtoul() returned %d for" 2101 pr_err("strict_strtoul() returned %d for"
2102 " lu_gp_id\n", ret); 2102 " lu_gp_id\n", ret);
2103 return -EINVAL; 2103 return -EINVAL;
2104 } 2104 }
2105 if (lu_gp_id > 0x0000ffff) { 2105 if (lu_gp_id > 0x0000ffff) {
2106 pr_err("ALUA lu_gp_id: %lu exceeds maximum:" 2106 pr_err("ALUA lu_gp_id: %lu exceeds maximum:"
2107 " 0x0000ffff\n", lu_gp_id); 2107 " 0x0000ffff\n", lu_gp_id);
2108 return -EINVAL; 2108 return -EINVAL;
2109 } 2109 }
2110 2110
2111 ret = core_alua_set_lu_gp_id(lu_gp, (u16)lu_gp_id); 2111 ret = core_alua_set_lu_gp_id(lu_gp, (u16)lu_gp_id);
2112 if (ret < 0) 2112 if (ret < 0)
2113 return -EINVAL; 2113 return -EINVAL;
2114 2114
2115 pr_debug("Target_Core_ConfigFS: Set ALUA Logical Unit" 2115 pr_debug("Target_Core_ConfigFS: Set ALUA Logical Unit"
2116 " Group: core/alua/lu_gps/%s to ID: %hu\n", 2116 " Group: core/alua/lu_gps/%s to ID: %hu\n",
2117 config_item_name(&alua_lu_gp_cg->cg_item), 2117 config_item_name(&alua_lu_gp_cg->cg_item),
2118 lu_gp->lu_gp_id); 2118 lu_gp->lu_gp_id);
2119 2119
2120 return count; 2120 return count;
2121 } 2121 }
2122 2122
2123 SE_DEV_ALUA_LU_ATTR(lu_gp_id, S_IRUGO | S_IWUSR); 2123 SE_DEV_ALUA_LU_ATTR(lu_gp_id, S_IRUGO | S_IWUSR);
2124 2124
2125 /* 2125 /*
2126 * members 2126 * members
2127 */ 2127 */
2128 static ssize_t target_core_alua_lu_gp_show_attr_members( 2128 static ssize_t target_core_alua_lu_gp_show_attr_members(
2129 struct t10_alua_lu_gp *lu_gp, 2129 struct t10_alua_lu_gp *lu_gp,
2130 char *page) 2130 char *page)
2131 { 2131 {
2132 struct se_device *dev; 2132 struct se_device *dev;
2133 struct se_hba *hba; 2133 struct se_hba *hba;
2134 struct se_subsystem_dev *su_dev; 2134 struct se_subsystem_dev *su_dev;
2135 struct t10_alua_lu_gp_member *lu_gp_mem; 2135 struct t10_alua_lu_gp_member *lu_gp_mem;
2136 ssize_t len = 0, cur_len; 2136 ssize_t len = 0, cur_len;
2137 unsigned char buf[LU_GROUP_NAME_BUF]; 2137 unsigned char buf[LU_GROUP_NAME_BUF];
2138 2138
2139 memset(buf, 0, LU_GROUP_NAME_BUF); 2139 memset(buf, 0, LU_GROUP_NAME_BUF);
2140 2140
2141 spin_lock(&lu_gp->lu_gp_lock); 2141 spin_lock(&lu_gp->lu_gp_lock);
2142 list_for_each_entry(lu_gp_mem, &lu_gp->lu_gp_mem_list, lu_gp_mem_list) { 2142 list_for_each_entry(lu_gp_mem, &lu_gp->lu_gp_mem_list, lu_gp_mem_list) {
2143 dev = lu_gp_mem->lu_gp_mem_dev; 2143 dev = lu_gp_mem->lu_gp_mem_dev;
2144 su_dev = dev->se_sub_dev; 2144 su_dev = dev->se_sub_dev;
2145 hba = su_dev->se_dev_hba; 2145 hba = su_dev->se_dev_hba;
2146 2146
2147 cur_len = snprintf(buf, LU_GROUP_NAME_BUF, "%s/%s\n", 2147 cur_len = snprintf(buf, LU_GROUP_NAME_BUF, "%s/%s\n",
2148 config_item_name(&hba->hba_group.cg_item), 2148 config_item_name(&hba->hba_group.cg_item),
2149 config_item_name(&su_dev->se_dev_group.cg_item)); 2149 config_item_name(&su_dev->se_dev_group.cg_item));
2150 cur_len++; /* Extra byte for NULL terminator */ 2150 cur_len++; /* Extra byte for NULL terminator */
2151 2151
2152 if ((cur_len + len) > PAGE_SIZE) { 2152 if ((cur_len + len) > PAGE_SIZE) {
2153 pr_warn("Ran out of lu_gp_show_attr" 2153 pr_warn("Ran out of lu_gp_show_attr"
2154 "_members buffer\n"); 2154 "_members buffer\n");
2155 break; 2155 break;
2156 } 2156 }
2157 memcpy(page+len, buf, cur_len); 2157 memcpy(page+len, buf, cur_len);
2158 len += cur_len; 2158 len += cur_len;
2159 } 2159 }
2160 spin_unlock(&lu_gp->lu_gp_lock); 2160 spin_unlock(&lu_gp->lu_gp_lock);
2161 2161
2162 return len; 2162 return len;
2163 } 2163 }
2164 2164
2165 SE_DEV_ALUA_LU_ATTR_RO(members); 2165 SE_DEV_ALUA_LU_ATTR_RO(members);
2166 2166
2167 CONFIGFS_EATTR_OPS(target_core_alua_lu_gp, t10_alua_lu_gp, lu_gp_group); 2167 CONFIGFS_EATTR_OPS(target_core_alua_lu_gp, t10_alua_lu_gp, lu_gp_group);
2168 2168
2169 static struct configfs_attribute *target_core_alua_lu_gp_attrs[] = { 2169 static struct configfs_attribute *target_core_alua_lu_gp_attrs[] = {
2170 &target_core_alua_lu_gp_lu_gp_id.attr, 2170 &target_core_alua_lu_gp_lu_gp_id.attr,
2171 &target_core_alua_lu_gp_members.attr, 2171 &target_core_alua_lu_gp_members.attr,
2172 NULL, 2172 NULL,
2173 }; 2173 };
2174 2174
2175 static void target_core_alua_lu_gp_release(struct config_item *item) 2175 static void target_core_alua_lu_gp_release(struct config_item *item)
2176 { 2176 {
2177 struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), 2177 struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item),
2178 struct t10_alua_lu_gp, lu_gp_group); 2178 struct t10_alua_lu_gp, lu_gp_group);
2179 2179
2180 core_alua_free_lu_gp(lu_gp); 2180 core_alua_free_lu_gp(lu_gp);
2181 } 2181 }
2182 2182
2183 static struct configfs_item_operations target_core_alua_lu_gp_ops = { 2183 static struct configfs_item_operations target_core_alua_lu_gp_ops = {
2184 .release = target_core_alua_lu_gp_release, 2184 .release = target_core_alua_lu_gp_release,
2185 .show_attribute = target_core_alua_lu_gp_attr_show, 2185 .show_attribute = target_core_alua_lu_gp_attr_show,
2186 .store_attribute = target_core_alua_lu_gp_attr_store, 2186 .store_attribute = target_core_alua_lu_gp_attr_store,
2187 }; 2187 };
2188 2188
2189 static struct config_item_type target_core_alua_lu_gp_cit = { 2189 static struct config_item_type target_core_alua_lu_gp_cit = {
2190 .ct_item_ops = &target_core_alua_lu_gp_ops, 2190 .ct_item_ops = &target_core_alua_lu_gp_ops,
2191 .ct_attrs = target_core_alua_lu_gp_attrs, 2191 .ct_attrs = target_core_alua_lu_gp_attrs,
2192 .ct_owner = THIS_MODULE, 2192 .ct_owner = THIS_MODULE,
2193 }; 2193 };
2194 2194
2195 /* End functions for struct config_item_type target_core_alua_lu_gp_cit */ 2195 /* End functions for struct config_item_type target_core_alua_lu_gp_cit */
2196 2196
2197 /* Start functions for struct config_item_type target_core_alua_lu_gps_cit */ 2197 /* Start functions for struct config_item_type target_core_alua_lu_gps_cit */
2198 2198
2199 static struct config_group *target_core_alua_create_lu_gp( 2199 static struct config_group *target_core_alua_create_lu_gp(
2200 struct config_group *group, 2200 struct config_group *group,
2201 const char *name) 2201 const char *name)
2202 { 2202 {
2203 struct t10_alua_lu_gp *lu_gp; 2203 struct t10_alua_lu_gp *lu_gp;
2204 struct config_group *alua_lu_gp_cg = NULL; 2204 struct config_group *alua_lu_gp_cg = NULL;
2205 struct config_item *alua_lu_gp_ci = NULL; 2205 struct config_item *alua_lu_gp_ci = NULL;
2206 2206
2207 lu_gp = core_alua_allocate_lu_gp(name, 0); 2207 lu_gp = core_alua_allocate_lu_gp(name, 0);
2208 if (IS_ERR(lu_gp)) 2208 if (IS_ERR(lu_gp))
2209 return NULL; 2209 return NULL;
2210 2210
2211 alua_lu_gp_cg = &lu_gp->lu_gp_group; 2211 alua_lu_gp_cg = &lu_gp->lu_gp_group;
2212 alua_lu_gp_ci = &alua_lu_gp_cg->cg_item; 2212 alua_lu_gp_ci = &alua_lu_gp_cg->cg_item;
2213 2213
2214 config_group_init_type_name(alua_lu_gp_cg, name, 2214 config_group_init_type_name(alua_lu_gp_cg, name,
2215 &target_core_alua_lu_gp_cit); 2215 &target_core_alua_lu_gp_cit);
2216 2216
2217 pr_debug("Target_Core_ConfigFS: Allocated ALUA Logical Unit" 2217 pr_debug("Target_Core_ConfigFS: Allocated ALUA Logical Unit"
2218 " Group: core/alua/lu_gps/%s\n", 2218 " Group: core/alua/lu_gps/%s\n",
2219 config_item_name(alua_lu_gp_ci)); 2219 config_item_name(alua_lu_gp_ci));
2220 2220
2221 return alua_lu_gp_cg; 2221 return alua_lu_gp_cg;
2222 2222
2223 } 2223 }
2224 2224
2225 static void target_core_alua_drop_lu_gp( 2225 static void target_core_alua_drop_lu_gp(
2226 struct config_group *group, 2226 struct config_group *group,
2227 struct config_item *item) 2227 struct config_item *item)
2228 { 2228 {
2229 struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), 2229 struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item),
2230 struct t10_alua_lu_gp, lu_gp_group); 2230 struct t10_alua_lu_gp, lu_gp_group);
2231 2231
2232 pr_debug("Target_Core_ConfigFS: Releasing ALUA Logical Unit" 2232 pr_debug("Target_Core_ConfigFS: Releasing ALUA Logical Unit"
2233 " Group: core/alua/lu_gps/%s, ID: %hu\n", 2233 " Group: core/alua/lu_gps/%s, ID: %hu\n",
2234 config_item_name(item), lu_gp->lu_gp_id); 2234 config_item_name(item), lu_gp->lu_gp_id);
2235 /* 2235 /*
2236 * core_alua_free_lu_gp() is called from target_core_alua_lu_gp_ops->release() 2236 * core_alua_free_lu_gp() is called from target_core_alua_lu_gp_ops->release()
2237 * -> target_core_alua_lu_gp_release() 2237 * -> target_core_alua_lu_gp_release()
2238 */ 2238 */
2239 config_item_put(item); 2239 config_item_put(item);
2240 } 2240 }
2241 2241
2242 static struct configfs_group_operations target_core_alua_lu_gps_group_ops = { 2242 static struct configfs_group_operations target_core_alua_lu_gps_group_ops = {
2243 .make_group = &target_core_alua_create_lu_gp, 2243 .make_group = &target_core_alua_create_lu_gp,
2244 .drop_item = &target_core_alua_drop_lu_gp, 2244 .drop_item = &target_core_alua_drop_lu_gp,
2245 }; 2245 };
2246 2246
2247 static struct config_item_type target_core_alua_lu_gps_cit = { 2247 static struct config_item_type target_core_alua_lu_gps_cit = {
2248 .ct_item_ops = NULL, 2248 .ct_item_ops = NULL,
2249 .ct_group_ops = &target_core_alua_lu_gps_group_ops, 2249 .ct_group_ops = &target_core_alua_lu_gps_group_ops,
2250 .ct_owner = THIS_MODULE, 2250 .ct_owner = THIS_MODULE,
2251 }; 2251 };
2252 2252
2253 /* End functions for struct config_item_type target_core_alua_lu_gps_cit */ 2253 /* End functions for struct config_item_type target_core_alua_lu_gps_cit */
2254 2254
2255 /* Start functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ 2255 /* Start functions for struct config_item_type target_core_alua_tg_pt_gp_cit */
2256 2256
2257 CONFIGFS_EATTR_STRUCT(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp); 2257 CONFIGFS_EATTR_STRUCT(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp);
2258 #define SE_DEV_ALUA_TG_PT_ATTR(_name, _mode) \ 2258 #define SE_DEV_ALUA_TG_PT_ATTR(_name, _mode) \
2259 static struct target_core_alua_tg_pt_gp_attribute \ 2259 static struct target_core_alua_tg_pt_gp_attribute \
2260 target_core_alua_tg_pt_gp_##_name = \ 2260 target_core_alua_tg_pt_gp_##_name = \
2261 __CONFIGFS_EATTR(_name, _mode, \ 2261 __CONFIGFS_EATTR(_name, _mode, \
2262 target_core_alua_tg_pt_gp_show_attr_##_name, \ 2262 target_core_alua_tg_pt_gp_show_attr_##_name, \
2263 target_core_alua_tg_pt_gp_store_attr_##_name); 2263 target_core_alua_tg_pt_gp_store_attr_##_name);
2264 2264
2265 #define SE_DEV_ALUA_TG_PT_ATTR_RO(_name) \ 2265 #define SE_DEV_ALUA_TG_PT_ATTR_RO(_name) \
2266 static struct target_core_alua_tg_pt_gp_attribute \ 2266 static struct target_core_alua_tg_pt_gp_attribute \
2267 target_core_alua_tg_pt_gp_##_name = \ 2267 target_core_alua_tg_pt_gp_##_name = \
2268 __CONFIGFS_EATTR_RO(_name, \ 2268 __CONFIGFS_EATTR_RO(_name, \
2269 target_core_alua_tg_pt_gp_show_attr_##_name); 2269 target_core_alua_tg_pt_gp_show_attr_##_name);
2270 2270
2271 /* 2271 /*
2272 * alua_access_state 2272 * alua_access_state
2273 */ 2273 */
2274 static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_state( 2274 static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_state(
2275 struct t10_alua_tg_pt_gp *tg_pt_gp, 2275 struct t10_alua_tg_pt_gp *tg_pt_gp,
2276 char *page) 2276 char *page)
2277 { 2277 {
2278 return sprintf(page, "%d\n", 2278 return sprintf(page, "%d\n",
2279 atomic_read(&tg_pt_gp->tg_pt_gp_alua_access_state)); 2279 atomic_read(&tg_pt_gp->tg_pt_gp_alua_access_state));
2280 } 2280 }
2281 2281
2282 static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_state( 2282 static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_state(
2283 struct t10_alua_tg_pt_gp *tg_pt_gp, 2283 struct t10_alua_tg_pt_gp *tg_pt_gp,
2284 const char *page, 2284 const char *page,
2285 size_t count) 2285 size_t count)
2286 { 2286 {
2287 struct se_subsystem_dev *su_dev = tg_pt_gp->tg_pt_gp_su_dev; 2287 struct se_subsystem_dev *su_dev = tg_pt_gp->tg_pt_gp_su_dev;
2288 unsigned long tmp; 2288 unsigned long tmp;
2289 int new_state, ret; 2289 int new_state, ret;
2290 2290
2291 if (!tg_pt_gp->tg_pt_gp_valid_id) { 2291 if (!tg_pt_gp->tg_pt_gp_valid_id) {
2292 pr_err("Unable to do implict ALUA on non valid" 2292 pr_err("Unable to do implict ALUA on non valid"
2293 " tg_pt_gp ID: %hu\n", tg_pt_gp->tg_pt_gp_valid_id); 2293 " tg_pt_gp ID: %hu\n", tg_pt_gp->tg_pt_gp_valid_id);
2294 return -EINVAL; 2294 return -EINVAL;
2295 } 2295 }
2296 2296
2297 ret = strict_strtoul(page, 0, &tmp); 2297 ret = strict_strtoul(page, 0, &tmp);
2298 if (ret < 0) { 2298 if (ret < 0) {
2299 pr_err("Unable to extract new ALUA access state from" 2299 pr_err("Unable to extract new ALUA access state from"
2300 " %s\n", page); 2300 " %s\n", page);
2301 return -EINVAL; 2301 return -EINVAL;
2302 } 2302 }
2303 new_state = (int)tmp; 2303 new_state = (int)tmp;
2304 2304
2305 if (!(tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_IMPLICT_ALUA)) { 2305 if (!(tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_IMPLICT_ALUA)) {
2306 pr_err("Unable to process implict configfs ALUA" 2306 pr_err("Unable to process implict configfs ALUA"
2307 " transition while TPGS_IMPLICT_ALUA is diabled\n"); 2307 " transition while TPGS_IMPLICT_ALUA is diabled\n");
2308 return -EINVAL; 2308 return -EINVAL;
2309 } 2309 }
2310 2310
2311 ret = core_alua_do_port_transition(tg_pt_gp, su_dev->se_dev_ptr, 2311 ret = core_alua_do_port_transition(tg_pt_gp, su_dev->se_dev_ptr,
2312 NULL, NULL, new_state, 0); 2312 NULL, NULL, new_state, 0);
2313 return (!ret) ? count : -EINVAL; 2313 return (!ret) ? count : -EINVAL;
2314 } 2314 }
2315 2315
2316 SE_DEV_ALUA_TG_PT_ATTR(alua_access_state, S_IRUGO | S_IWUSR); 2316 SE_DEV_ALUA_TG_PT_ATTR(alua_access_state, S_IRUGO | S_IWUSR);
2317 2317
2318 /* 2318 /*
2319 * alua_access_status 2319 * alua_access_status
2320 */ 2320 */
2321 static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_status( 2321 static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_status(
2322 struct t10_alua_tg_pt_gp *tg_pt_gp, 2322 struct t10_alua_tg_pt_gp *tg_pt_gp,
2323 char *page) 2323 char *page)
2324 { 2324 {
2325 return sprintf(page, "%s\n", 2325 return sprintf(page, "%s\n",
2326 core_alua_dump_status(tg_pt_gp->tg_pt_gp_alua_access_status)); 2326 core_alua_dump_status(tg_pt_gp->tg_pt_gp_alua_access_status));
2327 } 2327 }
2328 2328
2329 static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_status( 2329 static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_status(
2330 struct t10_alua_tg_pt_gp *tg_pt_gp, 2330 struct t10_alua_tg_pt_gp *tg_pt_gp,
2331 const char *page, 2331 const char *page,
2332 size_t count) 2332 size_t count)
2333 { 2333 {
2334 unsigned long tmp; 2334 unsigned long tmp;
2335 int new_status, ret; 2335 int new_status, ret;
2336 2336
2337 if (!tg_pt_gp->tg_pt_gp_valid_id) { 2337 if (!tg_pt_gp->tg_pt_gp_valid_id) {
2338 pr_err("Unable to do set ALUA access status on non" 2338 pr_err("Unable to do set ALUA access status on non"
2339 " valid tg_pt_gp ID: %hu\n", 2339 " valid tg_pt_gp ID: %hu\n",
2340 tg_pt_gp->tg_pt_gp_valid_id); 2340 tg_pt_gp->tg_pt_gp_valid_id);
2341 return -EINVAL; 2341 return -EINVAL;
2342 } 2342 }
2343 2343
2344 ret = strict_strtoul(page, 0, &tmp); 2344 ret = strict_strtoul(page, 0, &tmp);
2345 if (ret < 0) { 2345 if (ret < 0) {
2346 pr_err("Unable to extract new ALUA access status" 2346 pr_err("Unable to extract new ALUA access status"
2347 " from %s\n", page); 2347 " from %s\n", page);
2348 return -EINVAL; 2348 return -EINVAL;
2349 } 2349 }
2350 new_status = (int)tmp; 2350 new_status = (int)tmp;
2351 2351
2352 if ((new_status != ALUA_STATUS_NONE) && 2352 if ((new_status != ALUA_STATUS_NONE) &&
2353 (new_status != ALUA_STATUS_ALTERED_BY_EXPLICT_STPG) && 2353 (new_status != ALUA_STATUS_ALTERED_BY_EXPLICT_STPG) &&
2354 (new_status != ALUA_STATUS_ALTERED_BY_IMPLICT_ALUA)) { 2354 (new_status != ALUA_STATUS_ALTERED_BY_IMPLICT_ALUA)) {
2355 pr_err("Illegal ALUA access status: 0x%02x\n", 2355 pr_err("Illegal ALUA access status: 0x%02x\n",
2356 new_status); 2356 new_status);
2357 return -EINVAL; 2357 return -EINVAL;
2358 } 2358 }
2359 2359
2360 tg_pt_gp->tg_pt_gp_alua_access_status = new_status; 2360 tg_pt_gp->tg_pt_gp_alua_access_status = new_status;
2361 return count; 2361 return count;
2362 } 2362 }
2363 2363
2364 SE_DEV_ALUA_TG_PT_ATTR(alua_access_status, S_IRUGO | S_IWUSR); 2364 SE_DEV_ALUA_TG_PT_ATTR(alua_access_status, S_IRUGO | S_IWUSR);
2365 2365
2366 /* 2366 /*
2367 * alua_access_type 2367 * alua_access_type
2368 */ 2368 */
2369 static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_type( 2369 static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_type(
2370 struct t10_alua_tg_pt_gp *tg_pt_gp, 2370 struct t10_alua_tg_pt_gp *tg_pt_gp,
2371 char *page) 2371 char *page)
2372 { 2372 {
2373 return core_alua_show_access_type(tg_pt_gp, page); 2373 return core_alua_show_access_type(tg_pt_gp, page);
2374 } 2374 }
2375 2375
2376 static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_type( 2376 static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_type(
2377 struct t10_alua_tg_pt_gp *tg_pt_gp, 2377 struct t10_alua_tg_pt_gp *tg_pt_gp,
2378 const char *page, 2378 const char *page,
2379 size_t count) 2379 size_t count)
2380 { 2380 {
2381 return core_alua_store_access_type(tg_pt_gp, page, count); 2381 return core_alua_store_access_type(tg_pt_gp, page, count);
2382 } 2382 }
2383 2383
2384 SE_DEV_ALUA_TG_PT_ATTR(alua_access_type, S_IRUGO | S_IWUSR); 2384 SE_DEV_ALUA_TG_PT_ATTR(alua_access_type, S_IRUGO | S_IWUSR);
2385 2385
2386 /* 2386 /*
2387 * alua_write_metadata 2387 * alua_write_metadata
2388 */ 2388 */
2389 static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_write_metadata( 2389 static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_write_metadata(
2390 struct t10_alua_tg_pt_gp *tg_pt_gp, 2390 struct t10_alua_tg_pt_gp *tg_pt_gp,
2391 char *page) 2391 char *page)
2392 { 2392 {
2393 return sprintf(page, "%d\n", tg_pt_gp->tg_pt_gp_write_metadata); 2393 return sprintf(page, "%d\n", tg_pt_gp->tg_pt_gp_write_metadata);
2394 } 2394 }
2395 2395
2396 static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_write_metadata( 2396 static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_write_metadata(
2397 struct t10_alua_tg_pt_gp *tg_pt_gp, 2397 struct t10_alua_tg_pt_gp *tg_pt_gp,
2398 const char *page, 2398 const char *page,
2399 size_t count) 2399 size_t count)
2400 { 2400 {
2401 unsigned long tmp; 2401 unsigned long tmp;
2402 int ret; 2402 int ret;
2403 2403
2404 ret = strict_strtoul(page, 0, &tmp); 2404 ret = strict_strtoul(page, 0, &tmp);
2405 if (ret < 0) { 2405 if (ret < 0) {
2406 pr_err("Unable to extract alua_write_metadata\n"); 2406 pr_err("Unable to extract alua_write_metadata\n");
2407 return -EINVAL; 2407 return -EINVAL;
2408 } 2408 }
2409 2409
2410 if ((tmp != 0) && (tmp != 1)) { 2410 if ((tmp != 0) && (tmp != 1)) {
2411 pr_err("Illegal value for alua_write_metadata:" 2411 pr_err("Illegal value for alua_write_metadata:"
2412 " %lu\n", tmp); 2412 " %lu\n", tmp);
2413 return -EINVAL; 2413 return -EINVAL;
2414 } 2414 }
2415 tg_pt_gp->tg_pt_gp_write_metadata = (int)tmp; 2415 tg_pt_gp->tg_pt_gp_write_metadata = (int)tmp;
2416 2416
2417 return count; 2417 return count;
2418 } 2418 }
2419 2419
2420 SE_DEV_ALUA_TG_PT_ATTR(alua_write_metadata, S_IRUGO | S_IWUSR); 2420 SE_DEV_ALUA_TG_PT_ATTR(alua_write_metadata, S_IRUGO | S_IWUSR);
2421 2421
2422 2422
2423 2423
2424 /* 2424 /*
2425 * nonop_delay_msecs 2425 * nonop_delay_msecs
2426 */ 2426 */
2427 static ssize_t target_core_alua_tg_pt_gp_show_attr_nonop_delay_msecs( 2427 static ssize_t target_core_alua_tg_pt_gp_show_attr_nonop_delay_msecs(
2428 struct t10_alua_tg_pt_gp *tg_pt_gp, 2428 struct t10_alua_tg_pt_gp *tg_pt_gp,
2429 char *page) 2429 char *page)
2430 { 2430 {
2431 return core_alua_show_nonop_delay_msecs(tg_pt_gp, page); 2431 return core_alua_show_nonop_delay_msecs(tg_pt_gp, page);
2432 2432
2433 } 2433 }
2434 2434
2435 static ssize_t target_core_alua_tg_pt_gp_store_attr_nonop_delay_msecs( 2435 static ssize_t target_core_alua_tg_pt_gp_store_attr_nonop_delay_msecs(
2436 struct t10_alua_tg_pt_gp *tg_pt_gp, 2436 struct t10_alua_tg_pt_gp *tg_pt_gp,
2437 const char *page, 2437 const char *page,
2438 size_t count) 2438 size_t count)
2439 { 2439 {
2440 return core_alua_store_nonop_delay_msecs(tg_pt_gp, page, count); 2440 return core_alua_store_nonop_delay_msecs(tg_pt_gp, page, count);
2441 } 2441 }
2442 2442
2443 SE_DEV_ALUA_TG_PT_ATTR(nonop_delay_msecs, S_IRUGO | S_IWUSR); 2443 SE_DEV_ALUA_TG_PT_ATTR(nonop_delay_msecs, S_IRUGO | S_IWUSR);
2444 2444
2445 /* 2445 /*
2446 * trans_delay_msecs 2446 * trans_delay_msecs
2447 */ 2447 */
2448 static ssize_t target_core_alua_tg_pt_gp_show_attr_trans_delay_msecs( 2448 static ssize_t target_core_alua_tg_pt_gp_show_attr_trans_delay_msecs(
2449 struct t10_alua_tg_pt_gp *tg_pt_gp, 2449 struct t10_alua_tg_pt_gp *tg_pt_gp,
2450 char *page) 2450 char *page)
2451 { 2451 {
2452 return core_alua_show_trans_delay_msecs(tg_pt_gp, page); 2452 return core_alua_show_trans_delay_msecs(tg_pt_gp, page);
2453 } 2453 }
2454 2454
2455 static ssize_t target_core_alua_tg_pt_gp_store_attr_trans_delay_msecs( 2455 static ssize_t target_core_alua_tg_pt_gp_store_attr_trans_delay_msecs(
2456 struct t10_alua_tg_pt_gp *tg_pt_gp, 2456 struct t10_alua_tg_pt_gp *tg_pt_gp,
2457 const char *page, 2457 const char *page,
2458 size_t count) 2458 size_t count)
2459 { 2459 {
2460 return core_alua_store_trans_delay_msecs(tg_pt_gp, page, count); 2460 return core_alua_store_trans_delay_msecs(tg_pt_gp, page, count);
2461 } 2461 }
2462 2462
2463 SE_DEV_ALUA_TG_PT_ATTR(trans_delay_msecs, S_IRUGO | S_IWUSR); 2463 SE_DEV_ALUA_TG_PT_ATTR(trans_delay_msecs, S_IRUGO | S_IWUSR);
2464 2464
2465 /* 2465 /*
2466 * preferred 2466 * preferred
2467 */ 2467 */
2468 2468
2469 static ssize_t target_core_alua_tg_pt_gp_show_attr_preferred( 2469 static ssize_t target_core_alua_tg_pt_gp_show_attr_preferred(
2470 struct t10_alua_tg_pt_gp *tg_pt_gp, 2470 struct t10_alua_tg_pt_gp *tg_pt_gp,
2471 char *page) 2471 char *page)
2472 { 2472 {
2473 return core_alua_show_preferred_bit(tg_pt_gp, page); 2473 return core_alua_show_preferred_bit(tg_pt_gp, page);
2474 } 2474 }
2475 2475
2476 static ssize_t target_core_alua_tg_pt_gp_store_attr_preferred( 2476 static ssize_t target_core_alua_tg_pt_gp_store_attr_preferred(
2477 struct t10_alua_tg_pt_gp *tg_pt_gp, 2477 struct t10_alua_tg_pt_gp *tg_pt_gp,
2478 const char *page, 2478 const char *page,
2479 size_t count) 2479 size_t count)
2480 { 2480 {
2481 return core_alua_store_preferred_bit(tg_pt_gp, page, count); 2481 return core_alua_store_preferred_bit(tg_pt_gp, page, count);
2482 } 2482 }
2483 2483
2484 SE_DEV_ALUA_TG_PT_ATTR(preferred, S_IRUGO | S_IWUSR); 2484 SE_DEV_ALUA_TG_PT_ATTR(preferred, S_IRUGO | S_IWUSR);
2485 2485
2486 /* 2486 /*
2487 * tg_pt_gp_id 2487 * tg_pt_gp_id
2488 */ 2488 */
2489 static ssize_t target_core_alua_tg_pt_gp_show_attr_tg_pt_gp_id( 2489 static ssize_t target_core_alua_tg_pt_gp_show_attr_tg_pt_gp_id(
2490 struct t10_alua_tg_pt_gp *tg_pt_gp, 2490 struct t10_alua_tg_pt_gp *tg_pt_gp,
2491 char *page) 2491 char *page)
2492 { 2492 {
2493 if (!tg_pt_gp->tg_pt_gp_valid_id) 2493 if (!tg_pt_gp->tg_pt_gp_valid_id)
2494 return 0; 2494 return 0;
2495 2495
2496 return sprintf(page, "%hu\n", tg_pt_gp->tg_pt_gp_id); 2496 return sprintf(page, "%hu\n", tg_pt_gp->tg_pt_gp_id);
2497 } 2497 }
2498 2498
2499 static ssize_t target_core_alua_tg_pt_gp_store_attr_tg_pt_gp_id( 2499 static ssize_t target_core_alua_tg_pt_gp_store_attr_tg_pt_gp_id(
2500 struct t10_alua_tg_pt_gp *tg_pt_gp, 2500 struct t10_alua_tg_pt_gp *tg_pt_gp,
2501 const char *page, 2501 const char *page,
2502 size_t count) 2502 size_t count)
2503 { 2503 {
2504 struct config_group *alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; 2504 struct config_group *alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group;
2505 unsigned long tg_pt_gp_id; 2505 unsigned long tg_pt_gp_id;
2506 int ret; 2506 int ret;
2507 2507
2508 ret = strict_strtoul(page, 0, &tg_pt_gp_id); 2508 ret = strict_strtoul(page, 0, &tg_pt_gp_id);
2509 if (ret < 0) { 2509 if (ret < 0) {
2510 pr_err("strict_strtoul() returned %d for" 2510 pr_err("strict_strtoul() returned %d for"
2511 " tg_pt_gp_id\n", ret); 2511 " tg_pt_gp_id\n", ret);
2512 return -EINVAL; 2512 return -EINVAL;
2513 } 2513 }
2514 if (tg_pt_gp_id > 0x0000ffff) { 2514 if (tg_pt_gp_id > 0x0000ffff) {
2515 pr_err("ALUA tg_pt_gp_id: %lu exceeds maximum:" 2515 pr_err("ALUA tg_pt_gp_id: %lu exceeds maximum:"
2516 " 0x0000ffff\n", tg_pt_gp_id); 2516 " 0x0000ffff\n", tg_pt_gp_id);
2517 return -EINVAL; 2517 return -EINVAL;
2518 } 2518 }
2519 2519
2520 ret = core_alua_set_tg_pt_gp_id(tg_pt_gp, (u16)tg_pt_gp_id); 2520 ret = core_alua_set_tg_pt_gp_id(tg_pt_gp, (u16)tg_pt_gp_id);
2521 if (ret < 0) 2521 if (ret < 0)
2522 return -EINVAL; 2522 return -EINVAL;
2523 2523
2524 pr_debug("Target_Core_ConfigFS: Set ALUA Target Port Group: " 2524 pr_debug("Target_Core_ConfigFS: Set ALUA Target Port Group: "
2525 "core/alua/tg_pt_gps/%s to ID: %hu\n", 2525 "core/alua/tg_pt_gps/%s to ID: %hu\n",
2526 config_item_name(&alua_tg_pt_gp_cg->cg_item), 2526 config_item_name(&alua_tg_pt_gp_cg->cg_item),
2527 tg_pt_gp->tg_pt_gp_id); 2527 tg_pt_gp->tg_pt_gp_id);
2528 2528
2529 return count; 2529 return count;
2530 } 2530 }
2531 2531
2532 SE_DEV_ALUA_TG_PT_ATTR(tg_pt_gp_id, S_IRUGO | S_IWUSR); 2532 SE_DEV_ALUA_TG_PT_ATTR(tg_pt_gp_id, S_IRUGO | S_IWUSR);
2533 2533
2534 /* 2534 /*
2535 * members 2535 * members
2536 */ 2536 */
2537 static ssize_t target_core_alua_tg_pt_gp_show_attr_members( 2537 static ssize_t target_core_alua_tg_pt_gp_show_attr_members(
2538 struct t10_alua_tg_pt_gp *tg_pt_gp, 2538 struct t10_alua_tg_pt_gp *tg_pt_gp,
2539 char *page) 2539 char *page)
2540 { 2540 {
2541 struct se_port *port; 2541 struct se_port *port;
2542 struct se_portal_group *tpg; 2542 struct se_portal_group *tpg;
2543 struct se_lun *lun; 2543 struct se_lun *lun;
2544 struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem; 2544 struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem;
2545 ssize_t len = 0, cur_len; 2545 ssize_t len = 0, cur_len;
2546 unsigned char buf[TG_PT_GROUP_NAME_BUF]; 2546 unsigned char buf[TG_PT_GROUP_NAME_BUF];
2547 2547
2548 memset(buf, 0, TG_PT_GROUP_NAME_BUF); 2548 memset(buf, 0, TG_PT_GROUP_NAME_BUF);
2549 2549
2550 spin_lock(&tg_pt_gp->tg_pt_gp_lock); 2550 spin_lock(&tg_pt_gp->tg_pt_gp_lock);
2551 list_for_each_entry(tg_pt_gp_mem, &tg_pt_gp->tg_pt_gp_mem_list, 2551 list_for_each_entry(tg_pt_gp_mem, &tg_pt_gp->tg_pt_gp_mem_list,
2552 tg_pt_gp_mem_list) { 2552 tg_pt_gp_mem_list) {
2553 port = tg_pt_gp_mem->tg_pt; 2553 port = tg_pt_gp_mem->tg_pt;
2554 tpg = port->sep_tpg; 2554 tpg = port->sep_tpg;
2555 lun = port->sep_lun; 2555 lun = port->sep_lun;
2556 2556
2557 cur_len = snprintf(buf, TG_PT_GROUP_NAME_BUF, "%s/%s/tpgt_%hu" 2557 cur_len = snprintf(buf, TG_PT_GROUP_NAME_BUF, "%s/%s/tpgt_%hu"
2558 "/%s\n", tpg->se_tpg_tfo->get_fabric_name(), 2558 "/%s\n", tpg->se_tpg_tfo->get_fabric_name(),
2559 tpg->se_tpg_tfo->tpg_get_wwn(tpg), 2559 tpg->se_tpg_tfo->tpg_get_wwn(tpg),
2560 tpg->se_tpg_tfo->tpg_get_tag(tpg), 2560 tpg->se_tpg_tfo->tpg_get_tag(tpg),
2561 config_item_name(&lun->lun_group.cg_item)); 2561 config_item_name(&lun->lun_group.cg_item));
2562 cur_len++; /* Extra byte for NULL terminator */ 2562 cur_len++; /* Extra byte for NULL terminator */
2563 2563
2564 if ((cur_len + len) > PAGE_SIZE) { 2564 if ((cur_len + len) > PAGE_SIZE) {
2565 pr_warn("Ran out of lu_gp_show_attr" 2565 pr_warn("Ran out of lu_gp_show_attr"
2566 "_members buffer\n"); 2566 "_members buffer\n");
2567 break; 2567 break;
2568 } 2568 }
2569 memcpy(page+len, buf, cur_len); 2569 memcpy(page+len, buf, cur_len);
2570 len += cur_len; 2570 len += cur_len;
2571 } 2571 }
2572 spin_unlock(&tg_pt_gp->tg_pt_gp_lock); 2572 spin_unlock(&tg_pt_gp->tg_pt_gp_lock);
2573 2573
2574 return len; 2574 return len;
2575 } 2575 }
2576 2576
2577 SE_DEV_ALUA_TG_PT_ATTR_RO(members); 2577 SE_DEV_ALUA_TG_PT_ATTR_RO(members);
2578 2578
2579 CONFIGFS_EATTR_OPS(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp, 2579 CONFIGFS_EATTR_OPS(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp,
2580 tg_pt_gp_group); 2580 tg_pt_gp_group);
2581 2581
2582 static struct configfs_attribute *target_core_alua_tg_pt_gp_attrs[] = { 2582 static struct configfs_attribute *target_core_alua_tg_pt_gp_attrs[] = {
2583 &target_core_alua_tg_pt_gp_alua_access_state.attr, 2583 &target_core_alua_tg_pt_gp_alua_access_state.attr,
2584 &target_core_alua_tg_pt_gp_alua_access_status.attr, 2584 &target_core_alua_tg_pt_gp_alua_access_status.attr,
2585 &target_core_alua_tg_pt_gp_alua_access_type.attr, 2585 &target_core_alua_tg_pt_gp_alua_access_type.attr,
2586 &target_core_alua_tg_pt_gp_alua_write_metadata.attr, 2586 &target_core_alua_tg_pt_gp_alua_write_metadata.attr,
2587 &target_core_alua_tg_pt_gp_nonop_delay_msecs.attr, 2587 &target_core_alua_tg_pt_gp_nonop_delay_msecs.attr,
2588 &target_core_alua_tg_pt_gp_trans_delay_msecs.attr, 2588 &target_core_alua_tg_pt_gp_trans_delay_msecs.attr,
2589 &target_core_alua_tg_pt_gp_preferred.attr, 2589 &target_core_alua_tg_pt_gp_preferred.attr,
2590 &target_core_alua_tg_pt_gp_tg_pt_gp_id.attr, 2590 &target_core_alua_tg_pt_gp_tg_pt_gp_id.attr,
2591 &target_core_alua_tg_pt_gp_members.attr, 2591 &target_core_alua_tg_pt_gp_members.attr,
2592 NULL, 2592 NULL,
2593 }; 2593 };
2594 2594
2595 static void target_core_alua_tg_pt_gp_release(struct config_item *item) 2595 static void target_core_alua_tg_pt_gp_release(struct config_item *item)
2596 { 2596 {
2597 struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), 2597 struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item),
2598 struct t10_alua_tg_pt_gp, tg_pt_gp_group); 2598 struct t10_alua_tg_pt_gp, tg_pt_gp_group);
2599 2599
2600 core_alua_free_tg_pt_gp(tg_pt_gp); 2600 core_alua_free_tg_pt_gp(tg_pt_gp);
2601 } 2601 }
2602 2602
2603 static struct configfs_item_operations target_core_alua_tg_pt_gp_ops = { 2603 static struct configfs_item_operations target_core_alua_tg_pt_gp_ops = {
2604 .release = target_core_alua_tg_pt_gp_release, 2604 .release = target_core_alua_tg_pt_gp_release,
2605 .show_attribute = target_core_alua_tg_pt_gp_attr_show, 2605 .show_attribute = target_core_alua_tg_pt_gp_attr_show,
2606 .store_attribute = target_core_alua_tg_pt_gp_attr_store, 2606 .store_attribute = target_core_alua_tg_pt_gp_attr_store,
2607 }; 2607 };
2608 2608
2609 static struct config_item_type target_core_alua_tg_pt_gp_cit = { 2609 static struct config_item_type target_core_alua_tg_pt_gp_cit = {
2610 .ct_item_ops = &target_core_alua_tg_pt_gp_ops, 2610 .ct_item_ops = &target_core_alua_tg_pt_gp_ops,
2611 .ct_attrs = target_core_alua_tg_pt_gp_attrs, 2611 .ct_attrs = target_core_alua_tg_pt_gp_attrs,
2612 .ct_owner = THIS_MODULE, 2612 .ct_owner = THIS_MODULE,
2613 }; 2613 };
2614 2614
2615 /* End functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ 2615 /* End functions for struct config_item_type target_core_alua_tg_pt_gp_cit */
2616 2616
2617 /* Start functions for struct config_item_type target_core_alua_tg_pt_gps_cit */ 2617 /* Start functions for struct config_item_type target_core_alua_tg_pt_gps_cit */
2618 2618
2619 static struct config_group *target_core_alua_create_tg_pt_gp( 2619 static struct config_group *target_core_alua_create_tg_pt_gp(
2620 struct config_group *group, 2620 struct config_group *group,
2621 const char *name) 2621 const char *name)
2622 { 2622 {
2623 struct t10_alua *alua = container_of(group, struct t10_alua, 2623 struct t10_alua *alua = container_of(group, struct t10_alua,
2624 alua_tg_pt_gps_group); 2624 alua_tg_pt_gps_group);
2625 struct t10_alua_tg_pt_gp *tg_pt_gp; 2625 struct t10_alua_tg_pt_gp *tg_pt_gp;
2626 struct se_subsystem_dev *su_dev = alua->t10_sub_dev; 2626 struct se_subsystem_dev *su_dev = alua->t10_sub_dev;
2627 struct config_group *alua_tg_pt_gp_cg = NULL; 2627 struct config_group *alua_tg_pt_gp_cg = NULL;
2628 struct config_item *alua_tg_pt_gp_ci = NULL; 2628 struct config_item *alua_tg_pt_gp_ci = NULL;
2629 2629
2630 tg_pt_gp = core_alua_allocate_tg_pt_gp(su_dev, name, 0); 2630 tg_pt_gp = core_alua_allocate_tg_pt_gp(su_dev, name, 0);
2631 if (!tg_pt_gp) 2631 if (!tg_pt_gp)
2632 return NULL; 2632 return NULL;
2633 2633
2634 alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; 2634 alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group;
2635 alua_tg_pt_gp_ci = &alua_tg_pt_gp_cg->cg_item; 2635 alua_tg_pt_gp_ci = &alua_tg_pt_gp_cg->cg_item;
2636 2636
2637 config_group_init_type_name(alua_tg_pt_gp_cg, name, 2637 config_group_init_type_name(alua_tg_pt_gp_cg, name,
2638 &target_core_alua_tg_pt_gp_cit); 2638 &target_core_alua_tg_pt_gp_cit);
2639 2639
2640 pr_debug("Target_Core_ConfigFS: Allocated ALUA Target Port" 2640 pr_debug("Target_Core_ConfigFS: Allocated ALUA Target Port"
2641 " Group: alua/tg_pt_gps/%s\n", 2641 " Group: alua/tg_pt_gps/%s\n",
2642 config_item_name(alua_tg_pt_gp_ci)); 2642 config_item_name(alua_tg_pt_gp_ci));
2643 2643
2644 return alua_tg_pt_gp_cg; 2644 return alua_tg_pt_gp_cg;
2645 } 2645 }
2646 2646
2647 static void target_core_alua_drop_tg_pt_gp( 2647 static void target_core_alua_drop_tg_pt_gp(
2648 struct config_group *group, 2648 struct config_group *group,
2649 struct config_item *item) 2649 struct config_item *item)
2650 { 2650 {
2651 struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), 2651 struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item),
2652 struct t10_alua_tg_pt_gp, tg_pt_gp_group); 2652 struct t10_alua_tg_pt_gp, tg_pt_gp_group);
2653 2653
2654 pr_debug("Target_Core_ConfigFS: Releasing ALUA Target Port" 2654 pr_debug("Target_Core_ConfigFS: Releasing ALUA Target Port"
2655 " Group: alua/tg_pt_gps/%s, ID: %hu\n", 2655 " Group: alua/tg_pt_gps/%s, ID: %hu\n",
2656 config_item_name(item), tg_pt_gp->tg_pt_gp_id); 2656 config_item_name(item), tg_pt_gp->tg_pt_gp_id);
2657 /* 2657 /*
2658 * core_alua_free_tg_pt_gp() is called from target_core_alua_tg_pt_gp_ops->release() 2658 * core_alua_free_tg_pt_gp() is called from target_core_alua_tg_pt_gp_ops->release()
2659 * -> target_core_alua_tg_pt_gp_release(). 2659 * -> target_core_alua_tg_pt_gp_release().
2660 */ 2660 */
2661 config_item_put(item); 2661 config_item_put(item);
2662 } 2662 }
2663 2663
2664 static struct configfs_group_operations target_core_alua_tg_pt_gps_group_ops = { 2664 static struct configfs_group_operations target_core_alua_tg_pt_gps_group_ops = {
2665 .make_group = &target_core_alua_create_tg_pt_gp, 2665 .make_group = &target_core_alua_create_tg_pt_gp,
2666 .drop_item = &target_core_alua_drop_tg_pt_gp, 2666 .drop_item = &target_core_alua_drop_tg_pt_gp,
2667 }; 2667 };
2668 2668
2669 static struct config_item_type target_core_alua_tg_pt_gps_cit = { 2669 static struct config_item_type target_core_alua_tg_pt_gps_cit = {
2670 .ct_group_ops = &target_core_alua_tg_pt_gps_group_ops, 2670 .ct_group_ops = &target_core_alua_tg_pt_gps_group_ops,
2671 .ct_owner = THIS_MODULE, 2671 .ct_owner = THIS_MODULE,
2672 }; 2672 };
2673 2673
2674 /* End functions for struct config_item_type target_core_alua_tg_pt_gps_cit */ 2674 /* End functions for struct config_item_type target_core_alua_tg_pt_gps_cit */
2675 2675
2676 /* Start functions for struct config_item_type target_core_alua_cit */ 2676 /* Start functions for struct config_item_type target_core_alua_cit */
2677 2677
2678 /* 2678 /*
2679 * target_core_alua_cit is a ConfigFS group that lives under 2679 * target_core_alua_cit is a ConfigFS group that lives under
2680 * /sys/kernel/config/target/core/alua. There are default groups 2680 * /sys/kernel/config/target/core/alua. There are default groups
2681 * core/alua/lu_gps and core/alua/tg_pt_gps that are attached to 2681 * core/alua/lu_gps and core/alua/tg_pt_gps that are attached to
2682 * target_core_alua_cit in target_core_init_configfs() below. 2682 * target_core_alua_cit in target_core_init_configfs() below.
2683 */ 2683 */
2684 static struct config_item_type target_core_alua_cit = { 2684 static struct config_item_type target_core_alua_cit = {
2685 .ct_item_ops = NULL, 2685 .ct_item_ops = NULL,
2686 .ct_attrs = NULL, 2686 .ct_attrs = NULL,
2687 .ct_owner = THIS_MODULE, 2687 .ct_owner = THIS_MODULE,
2688 }; 2688 };
2689 2689
2690 /* End functions for struct config_item_type target_core_alua_cit */ 2690 /* End functions for struct config_item_type target_core_alua_cit */
2691 2691
2692 /* Start functions for struct config_item_type target_core_stat_cit */ 2692 /* Start functions for struct config_item_type target_core_stat_cit */
2693 2693
2694 static struct config_group *target_core_stat_mkdir( 2694 static struct config_group *target_core_stat_mkdir(
2695 struct config_group *group, 2695 struct config_group *group,
2696 const char *name) 2696 const char *name)
2697 { 2697 {
2698 return ERR_PTR(-ENOSYS); 2698 return ERR_PTR(-ENOSYS);
2699 } 2699 }
2700 2700
2701 static void target_core_stat_rmdir( 2701 static void target_core_stat_rmdir(
2702 struct config_group *group, 2702 struct config_group *group,
2703 struct config_item *item) 2703 struct config_item *item)
2704 { 2704 {
2705 return; 2705 return;
2706 } 2706 }
2707 2707
2708 static struct configfs_group_operations target_core_stat_group_ops = { 2708 static struct configfs_group_operations target_core_stat_group_ops = {
2709 .make_group = &target_core_stat_mkdir, 2709 .make_group = &target_core_stat_mkdir,
2710 .drop_item = &target_core_stat_rmdir, 2710 .drop_item = &target_core_stat_rmdir,
2711 }; 2711 };
2712 2712
2713 static struct config_item_type target_core_stat_cit = { 2713 static struct config_item_type target_core_stat_cit = {
2714 .ct_group_ops = &target_core_stat_group_ops, 2714 .ct_group_ops = &target_core_stat_group_ops,
2715 .ct_owner = THIS_MODULE, 2715 .ct_owner = THIS_MODULE,
2716 }; 2716 };
2717 2717
2718 /* End functions for struct config_item_type target_core_stat_cit */ 2718 /* End functions for struct config_item_type target_core_stat_cit */
2719 2719
2720 /* Start functions for struct config_item_type target_core_hba_cit */ 2720 /* Start functions for struct config_item_type target_core_hba_cit */
2721 2721
2722 static struct config_group *target_core_make_subdev( 2722 static struct config_group *target_core_make_subdev(
2723 struct config_group *group, 2723 struct config_group *group,
2724 const char *name) 2724 const char *name)
2725 { 2725 {
2726 struct t10_alua_tg_pt_gp *tg_pt_gp; 2726 struct t10_alua_tg_pt_gp *tg_pt_gp;
2727 struct se_subsystem_dev *se_dev; 2727 struct se_subsystem_dev *se_dev;
2728 struct se_subsystem_api *t; 2728 struct se_subsystem_api *t;
2729 struct config_item *hba_ci = &group->cg_item; 2729 struct config_item *hba_ci = &group->cg_item;
2730 struct se_hba *hba = item_to_hba(hba_ci); 2730 struct se_hba *hba = item_to_hba(hba_ci);
2731 struct config_group *dev_cg = NULL, *tg_pt_gp_cg = NULL; 2731 struct config_group *dev_cg = NULL, *tg_pt_gp_cg = NULL;
2732 struct config_group *dev_stat_grp = NULL; 2732 struct config_group *dev_stat_grp = NULL;
2733 int errno = -ENOMEM, ret; 2733 int errno = -ENOMEM, ret;
2734 2734
2735 ret = mutex_lock_interruptible(&hba->hba_access_mutex); 2735 ret = mutex_lock_interruptible(&hba->hba_access_mutex);
2736 if (ret) 2736 if (ret)
2737 return ERR_PTR(ret); 2737 return ERR_PTR(ret);
2738 /* 2738 /*
2739 * Locate the struct se_subsystem_api from parent's struct se_hba. 2739 * Locate the struct se_subsystem_api from parent's struct se_hba.
2740 */ 2740 */
2741 t = hba->transport; 2741 t = hba->transport;
2742 2742
2743 se_dev = kzalloc(sizeof(struct se_subsystem_dev), GFP_KERNEL); 2743 se_dev = kzalloc(sizeof(struct se_subsystem_dev), GFP_KERNEL);
2744 if (!se_dev) { 2744 if (!se_dev) {
2745 pr_err("Unable to allocate memory for" 2745 pr_err("Unable to allocate memory for"
2746 " struct se_subsystem_dev\n"); 2746 " struct se_subsystem_dev\n");
2747 goto unlock; 2747 goto unlock;
2748 } 2748 }
2749 INIT_LIST_HEAD(&se_dev->t10_wwn.t10_vpd_list); 2749 INIT_LIST_HEAD(&se_dev->t10_wwn.t10_vpd_list);
2750 spin_lock_init(&se_dev->t10_wwn.t10_vpd_lock); 2750 spin_lock_init(&se_dev->t10_wwn.t10_vpd_lock);
2751 INIT_LIST_HEAD(&se_dev->t10_pr.registration_list); 2751 INIT_LIST_HEAD(&se_dev->t10_pr.registration_list);
2752 INIT_LIST_HEAD(&se_dev->t10_pr.aptpl_reg_list); 2752 INIT_LIST_HEAD(&se_dev->t10_pr.aptpl_reg_list);
2753 spin_lock_init(&se_dev->t10_pr.registration_lock); 2753 spin_lock_init(&se_dev->t10_pr.registration_lock);
2754 spin_lock_init(&se_dev->t10_pr.aptpl_reg_lock); 2754 spin_lock_init(&se_dev->t10_pr.aptpl_reg_lock);
2755 INIT_LIST_HEAD(&se_dev->t10_alua.tg_pt_gps_list); 2755 INIT_LIST_HEAD(&se_dev->t10_alua.tg_pt_gps_list);
2756 spin_lock_init(&se_dev->t10_alua.tg_pt_gps_lock); 2756 spin_lock_init(&se_dev->t10_alua.tg_pt_gps_lock);
2757 spin_lock_init(&se_dev->se_dev_lock); 2757 spin_lock_init(&se_dev->se_dev_lock);
2758 se_dev->t10_pr.pr_aptpl_buf_len = PR_APTPL_BUF_LEN; 2758 se_dev->t10_pr.pr_aptpl_buf_len = PR_APTPL_BUF_LEN;
2759 se_dev->t10_wwn.t10_sub_dev = se_dev; 2759 se_dev->t10_wwn.t10_sub_dev = se_dev;
2760 se_dev->t10_alua.t10_sub_dev = se_dev; 2760 se_dev->t10_alua.t10_sub_dev = se_dev;
2761 se_dev->se_dev_attrib.da_sub_dev = se_dev; 2761 se_dev->se_dev_attrib.da_sub_dev = se_dev;
2762 2762
2763 se_dev->se_dev_hba = hba; 2763 se_dev->se_dev_hba = hba;
2764 dev_cg = &se_dev->se_dev_group; 2764 dev_cg = &se_dev->se_dev_group;
2765 2765
2766 dev_cg->default_groups = kzalloc(sizeof(struct config_group) * 7, 2766 dev_cg->default_groups = kzalloc(sizeof(struct config_group) * 7,
2767 GFP_KERNEL); 2767 GFP_KERNEL);
2768 if (!dev_cg->default_groups) 2768 if (!dev_cg->default_groups)
2769 goto out; 2769 goto out;
2770 /* 2770 /*
2771 * Set se_dev_su_ptr from struct se_subsystem_api returned void ptr 2771 * Set se_dev_su_ptr from struct se_subsystem_api returned void ptr
2772 * for ->allocate_virtdevice() 2772 * for ->allocate_virtdevice()
2773 * 2773 *
2774 * se_dev->se_dev_ptr will be set after ->create_virtdev() 2774 * se_dev->se_dev_ptr will be set after ->create_virtdev()
2775 * has been called successfully in the next level up in the 2775 * has been called successfully in the next level up in the
2776 * configfs tree for device object's struct config_group. 2776 * configfs tree for device object's struct config_group.
2777 */ 2777 */
2778 se_dev->se_dev_su_ptr = t->allocate_virtdevice(hba, name); 2778 se_dev->se_dev_su_ptr = t->allocate_virtdevice(hba, name);
2779 if (!se_dev->se_dev_su_ptr) { 2779 if (!se_dev->se_dev_su_ptr) {
2780 pr_err("Unable to locate subsystem dependent pointer" 2780 pr_err("Unable to locate subsystem dependent pointer"
2781 " from allocate_virtdevice()\n"); 2781 " from allocate_virtdevice()\n");
2782 goto out; 2782 goto out;
2783 } 2783 }
2784 2784
2785 config_group_init_type_name(&se_dev->se_dev_group, name, 2785 config_group_init_type_name(&se_dev->se_dev_group, name,
2786 &target_core_dev_cit); 2786 &target_core_dev_cit);
2787 config_group_init_type_name(&se_dev->se_dev_attrib.da_group, "attrib", 2787 config_group_init_type_name(&se_dev->se_dev_attrib.da_group, "attrib",
2788 &target_core_dev_attrib_cit); 2788 &target_core_dev_attrib_cit);
2789 config_group_init_type_name(&se_dev->se_dev_pr_group, "pr", 2789 config_group_init_type_name(&se_dev->se_dev_pr_group, "pr",
2790 &target_core_dev_pr_cit); 2790 &target_core_dev_pr_cit);
2791 config_group_init_type_name(&se_dev->t10_wwn.t10_wwn_group, "wwn", 2791 config_group_init_type_name(&se_dev->t10_wwn.t10_wwn_group, "wwn",
2792 &target_core_dev_wwn_cit); 2792 &target_core_dev_wwn_cit);
2793 config_group_init_type_name(&se_dev->t10_alua.alua_tg_pt_gps_group, 2793 config_group_init_type_name(&se_dev->t10_alua.alua_tg_pt_gps_group,
2794 "alua", &target_core_alua_tg_pt_gps_cit); 2794 "alua", &target_core_alua_tg_pt_gps_cit);
2795 config_group_init_type_name(&se_dev->dev_stat_grps.stat_group, 2795 config_group_init_type_name(&se_dev->dev_stat_grps.stat_group,
2796 "statistics", &target_core_stat_cit); 2796 "statistics", &target_core_stat_cit);
2797 2797
2798 dev_cg->default_groups[0] = &se_dev->se_dev_attrib.da_group; 2798 dev_cg->default_groups[0] = &se_dev->se_dev_attrib.da_group;
2799 dev_cg->default_groups[1] = &se_dev->se_dev_pr_group; 2799 dev_cg->default_groups[1] = &se_dev->se_dev_pr_group;
2800 dev_cg->default_groups[2] = &se_dev->t10_wwn.t10_wwn_group; 2800 dev_cg->default_groups[2] = &se_dev->t10_wwn.t10_wwn_group;
2801 dev_cg->default_groups[3] = &se_dev->t10_alua.alua_tg_pt_gps_group; 2801 dev_cg->default_groups[3] = &se_dev->t10_alua.alua_tg_pt_gps_group;
2802 dev_cg->default_groups[4] = &se_dev->dev_stat_grps.stat_group; 2802 dev_cg->default_groups[4] = &se_dev->dev_stat_grps.stat_group;
2803 dev_cg->default_groups[5] = NULL; 2803 dev_cg->default_groups[5] = NULL;
2804 /* 2804 /*
2805 * Add core/$HBA/$DEV/alua/default_tg_pt_gp 2805 * Add core/$HBA/$DEV/alua/default_tg_pt_gp
2806 */ 2806 */
2807 tg_pt_gp = core_alua_allocate_tg_pt_gp(se_dev, "default_tg_pt_gp", 1); 2807 tg_pt_gp = core_alua_allocate_tg_pt_gp(se_dev, "default_tg_pt_gp", 1);
2808 if (!tg_pt_gp) 2808 if (!tg_pt_gp)
2809 goto out; 2809 goto out;
2810 2810
2811 tg_pt_gp_cg = &se_dev->t10_alua.alua_tg_pt_gps_group; 2811 tg_pt_gp_cg = &se_dev->t10_alua.alua_tg_pt_gps_group;
2812 tg_pt_gp_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, 2812 tg_pt_gp_cg->default_groups = kzalloc(sizeof(struct config_group) * 2,
2813 GFP_KERNEL); 2813 GFP_KERNEL);
2814 if (!tg_pt_gp_cg->default_groups) { 2814 if (!tg_pt_gp_cg->default_groups) {
2815 pr_err("Unable to allocate tg_pt_gp_cg->" 2815 pr_err("Unable to allocate tg_pt_gp_cg->"
2816 "default_groups\n"); 2816 "default_groups\n");
2817 goto out; 2817 goto out;
2818 } 2818 }
2819 2819
2820 config_group_init_type_name(&tg_pt_gp->tg_pt_gp_group, 2820 config_group_init_type_name(&tg_pt_gp->tg_pt_gp_group,
2821 "default_tg_pt_gp", &target_core_alua_tg_pt_gp_cit); 2821 "default_tg_pt_gp", &target_core_alua_tg_pt_gp_cit);
2822 tg_pt_gp_cg->default_groups[0] = &tg_pt_gp->tg_pt_gp_group; 2822 tg_pt_gp_cg->default_groups[0] = &tg_pt_gp->tg_pt_gp_group;
2823 tg_pt_gp_cg->default_groups[1] = NULL; 2823 tg_pt_gp_cg->default_groups[1] = NULL;
2824 se_dev->t10_alua.default_tg_pt_gp = tg_pt_gp; 2824 se_dev->t10_alua.default_tg_pt_gp = tg_pt_gp;
2825 /* 2825 /*
2826 * Add core/$HBA/$DEV/statistics/ default groups 2826 * Add core/$HBA/$DEV/statistics/ default groups
2827 */ 2827 */
2828 dev_stat_grp = &se_dev->dev_stat_grps.stat_group; 2828 dev_stat_grp = &se_dev->dev_stat_grps.stat_group;
2829 dev_stat_grp->default_groups = kzalloc(sizeof(struct config_group) * 4, 2829 dev_stat_grp->default_groups = kzalloc(sizeof(struct config_group) * 4,
2830 GFP_KERNEL); 2830 GFP_KERNEL);
2831 if (!dev_stat_grp->default_groups) { 2831 if (!dev_stat_grp->default_groups) {
2832 pr_err("Unable to allocate dev_stat_grp->default_groups\n"); 2832 pr_err("Unable to allocate dev_stat_grp->default_groups\n");
2833 goto out; 2833 goto out;
2834 } 2834 }
2835 target_stat_setup_dev_default_groups(se_dev); 2835 target_stat_setup_dev_default_groups(se_dev);
2836 2836
2837 pr_debug("Target_Core_ConfigFS: Allocated struct se_subsystem_dev:" 2837 pr_debug("Target_Core_ConfigFS: Allocated struct se_subsystem_dev:"
2838 " %p se_dev_su_ptr: %p\n", se_dev, se_dev->se_dev_su_ptr); 2838 " %p se_dev_su_ptr: %p\n", se_dev, se_dev->se_dev_su_ptr);
2839 2839
2840 mutex_unlock(&hba->hba_access_mutex); 2840 mutex_unlock(&hba->hba_access_mutex);
2841 return &se_dev->se_dev_group; 2841 return &se_dev->se_dev_group;
2842 out: 2842 out:
2843 if (se_dev->t10_alua.default_tg_pt_gp) { 2843 if (se_dev->t10_alua.default_tg_pt_gp) {
2844 core_alua_free_tg_pt_gp(se_dev->t10_alua.default_tg_pt_gp); 2844 core_alua_free_tg_pt_gp(se_dev->t10_alua.default_tg_pt_gp);
2845 se_dev->t10_alua.default_tg_pt_gp = NULL; 2845 se_dev->t10_alua.default_tg_pt_gp = NULL;
2846 } 2846 }
2847 if (dev_stat_grp) 2847 if (dev_stat_grp)
2848 kfree(dev_stat_grp->default_groups); 2848 kfree(dev_stat_grp->default_groups);
2849 if (tg_pt_gp_cg) 2849 if (tg_pt_gp_cg)
2850 kfree(tg_pt_gp_cg->default_groups); 2850 kfree(tg_pt_gp_cg->default_groups);
2851 if (dev_cg) 2851 if (dev_cg)
2852 kfree(dev_cg->default_groups); 2852 kfree(dev_cg->default_groups);
2853 if (se_dev->se_dev_su_ptr) 2853 if (se_dev->se_dev_su_ptr)
2854 t->free_device(se_dev->se_dev_su_ptr); 2854 t->free_device(se_dev->se_dev_su_ptr);
2855 kfree(se_dev); 2855 kfree(se_dev);
2856 unlock: 2856 unlock:
2857 mutex_unlock(&hba->hba_access_mutex); 2857 mutex_unlock(&hba->hba_access_mutex);
2858 return ERR_PTR(errno); 2858 return ERR_PTR(errno);
2859 } 2859 }
2860 2860
2861 static void target_core_drop_subdev( 2861 static void target_core_drop_subdev(
2862 struct config_group *group, 2862 struct config_group *group,
2863 struct config_item *item) 2863 struct config_item *item)
2864 { 2864 {
2865 struct se_subsystem_dev *se_dev = container_of(to_config_group(item), 2865 struct se_subsystem_dev *se_dev = container_of(to_config_group(item),
2866 struct se_subsystem_dev, se_dev_group); 2866 struct se_subsystem_dev, se_dev_group);
2867 struct se_hba *hba; 2867 struct se_hba *hba;
2868 struct se_subsystem_api *t; 2868 struct se_subsystem_api *t;
2869 struct config_item *df_item; 2869 struct config_item *df_item;
2870 struct config_group *dev_cg, *tg_pt_gp_cg, *dev_stat_grp; 2870 struct config_group *dev_cg, *tg_pt_gp_cg, *dev_stat_grp;
2871 int i; 2871 int i;
2872 2872
2873 hba = item_to_hba(&se_dev->se_dev_hba->hba_group.cg_item); 2873 hba = item_to_hba(&se_dev->se_dev_hba->hba_group.cg_item);
2874 2874
2875 mutex_lock(&hba->hba_access_mutex); 2875 mutex_lock(&hba->hba_access_mutex);
2876 t = hba->transport; 2876 t = hba->transport;
2877 2877
2878 dev_stat_grp = &se_dev->dev_stat_grps.stat_group; 2878 dev_stat_grp = &se_dev->dev_stat_grps.stat_group;
2879 for (i = 0; dev_stat_grp->default_groups[i]; i++) { 2879 for (i = 0; dev_stat_grp->default_groups[i]; i++) {
2880 df_item = &dev_stat_grp->default_groups[i]->cg_item; 2880 df_item = &dev_stat_grp->default_groups[i]->cg_item;
2881 dev_stat_grp->default_groups[i] = NULL; 2881 dev_stat_grp->default_groups[i] = NULL;
2882 config_item_put(df_item); 2882 config_item_put(df_item);
2883 } 2883 }
2884 kfree(dev_stat_grp->default_groups); 2884 kfree(dev_stat_grp->default_groups);
2885 2885
2886 tg_pt_gp_cg = &se_dev->t10_alua.alua_tg_pt_gps_group; 2886 tg_pt_gp_cg = &se_dev->t10_alua.alua_tg_pt_gps_group;
2887 for (i = 0; tg_pt_gp_cg->default_groups[i]; i++) { 2887 for (i = 0; tg_pt_gp_cg->default_groups[i]; i++) {
2888 df_item = &tg_pt_gp_cg->default_groups[i]->cg_item; 2888 df_item = &tg_pt_gp_cg->default_groups[i]->cg_item;
2889 tg_pt_gp_cg->default_groups[i] = NULL; 2889 tg_pt_gp_cg->default_groups[i] = NULL;
2890 config_item_put(df_item); 2890 config_item_put(df_item);
2891 } 2891 }
2892 kfree(tg_pt_gp_cg->default_groups); 2892 kfree(tg_pt_gp_cg->default_groups);
2893 /* 2893 /*
2894 * core_alua_free_tg_pt_gp() is called from ->default_tg_pt_gp 2894 * core_alua_free_tg_pt_gp() is called from ->default_tg_pt_gp
2895 * directly from target_core_alua_tg_pt_gp_release(). 2895 * directly from target_core_alua_tg_pt_gp_release().
2896 */ 2896 */
2897 se_dev->t10_alua.default_tg_pt_gp = NULL; 2897 se_dev->t10_alua.default_tg_pt_gp = NULL;
2898 2898
2899 dev_cg = &se_dev->se_dev_group; 2899 dev_cg = &se_dev->se_dev_group;
2900 for (i = 0; dev_cg->default_groups[i]; i++) { 2900 for (i = 0; dev_cg->default_groups[i]; i++) {
2901 df_item = &dev_cg->default_groups[i]->cg_item; 2901 df_item = &dev_cg->default_groups[i]->cg_item;
2902 dev_cg->default_groups[i] = NULL; 2902 dev_cg->default_groups[i] = NULL;
2903 config_item_put(df_item); 2903 config_item_put(df_item);
2904 } 2904 }
2905 /* 2905 /*
2906 * The releasing of se_dev and associated se_dev->se_dev_ptr is done 2906 * The releasing of se_dev and associated se_dev->se_dev_ptr is done
2907 * from target_core_dev_item_ops->release() ->target_core_dev_release(). 2907 * from target_core_dev_item_ops->release() ->target_core_dev_release().
2908 */ 2908 */
2909 config_item_put(item); 2909 config_item_put(item);
2910 mutex_unlock(&hba->hba_access_mutex); 2910 mutex_unlock(&hba->hba_access_mutex);
2911 } 2911 }
2912 2912
2913 static struct configfs_group_operations target_core_hba_group_ops = { 2913 static struct configfs_group_operations target_core_hba_group_ops = {
2914 .make_group = target_core_make_subdev, 2914 .make_group = target_core_make_subdev,
2915 .drop_item = target_core_drop_subdev, 2915 .drop_item = target_core_drop_subdev,
2916 }; 2916 };
2917 2917
2918 CONFIGFS_EATTR_STRUCT(target_core_hba, se_hba); 2918 CONFIGFS_EATTR_STRUCT(target_core_hba, se_hba);
2919 #define SE_HBA_ATTR(_name, _mode) \ 2919 #define SE_HBA_ATTR(_name, _mode) \
2920 static struct target_core_hba_attribute \ 2920 static struct target_core_hba_attribute \
2921 target_core_hba_##_name = \ 2921 target_core_hba_##_name = \
2922 __CONFIGFS_EATTR(_name, _mode, \ 2922 __CONFIGFS_EATTR(_name, _mode, \
2923 target_core_hba_show_attr_##_name, \ 2923 target_core_hba_show_attr_##_name, \
2924 target_core_hba_store_attr_##_name); 2924 target_core_hba_store_attr_##_name);
2925 2925
2926 #define SE_HBA_ATTR_RO(_name) \ 2926 #define SE_HBA_ATTR_RO(_name) \
2927 static struct target_core_hba_attribute \ 2927 static struct target_core_hba_attribute \
2928 target_core_hba_##_name = \ 2928 target_core_hba_##_name = \
2929 __CONFIGFS_EATTR_RO(_name, \ 2929 __CONFIGFS_EATTR_RO(_name, \
2930 target_core_hba_show_attr_##_name); 2930 target_core_hba_show_attr_##_name);
2931 2931
2932 static ssize_t target_core_hba_show_attr_hba_info( 2932 static ssize_t target_core_hba_show_attr_hba_info(
2933 struct se_hba *hba, 2933 struct se_hba *hba,
2934 char *page) 2934 char *page)
2935 { 2935 {
2936 return sprintf(page, "HBA Index: %d plugin: %s version: %s\n", 2936 return sprintf(page, "HBA Index: %d plugin: %s version: %s\n",
2937 hba->hba_id, hba->transport->name, 2937 hba->hba_id, hba->transport->name,
2938 TARGET_CORE_CONFIGFS_VERSION); 2938 TARGET_CORE_CONFIGFS_VERSION);
2939 } 2939 }
2940 2940
2941 SE_HBA_ATTR_RO(hba_info); 2941 SE_HBA_ATTR_RO(hba_info);
2942 2942
2943 static ssize_t target_core_hba_show_attr_hba_mode(struct se_hba *hba, 2943 static ssize_t target_core_hba_show_attr_hba_mode(struct se_hba *hba,
2944 char *page) 2944 char *page)
2945 { 2945 {
2946 int hba_mode = 0; 2946 int hba_mode = 0;
2947 2947
2948 if (hba->hba_flags & HBA_FLAGS_PSCSI_MODE) 2948 if (hba->hba_flags & HBA_FLAGS_PSCSI_MODE)
2949 hba_mode = 1; 2949 hba_mode = 1;
2950 2950
2951 return sprintf(page, "%d\n", hba_mode); 2951 return sprintf(page, "%d\n", hba_mode);
2952 } 2952 }
2953 2953
2954 static ssize_t target_core_hba_store_attr_hba_mode(struct se_hba *hba, 2954 static ssize_t target_core_hba_store_attr_hba_mode(struct se_hba *hba,
2955 const char *page, size_t count) 2955 const char *page, size_t count)
2956 { 2956 {
2957 struct se_subsystem_api *transport = hba->transport; 2957 struct se_subsystem_api *transport = hba->transport;
2958 unsigned long mode_flag; 2958 unsigned long mode_flag;
2959 int ret; 2959 int ret;
2960 2960
2961 if (transport->pmode_enable_hba == NULL) 2961 if (transport->pmode_enable_hba == NULL)
2962 return -EINVAL; 2962 return -EINVAL;
2963 2963
2964 ret = strict_strtoul(page, 0, &mode_flag); 2964 ret = strict_strtoul(page, 0, &mode_flag);
2965 if (ret < 0) { 2965 if (ret < 0) {
2966 pr_err("Unable to extract hba mode flag: %d\n", ret); 2966 pr_err("Unable to extract hba mode flag: %d\n", ret);
2967 return -EINVAL; 2967 return -EINVAL;
2968 } 2968 }
2969 2969
2970 spin_lock(&hba->device_lock); 2970 spin_lock(&hba->device_lock);
2971 if (!list_empty(&hba->hba_dev_list)) { 2971 if (!list_empty(&hba->hba_dev_list)) {
2972 pr_err("Unable to set hba_mode with active devices\n"); 2972 pr_err("Unable to set hba_mode with active devices\n");
2973 spin_unlock(&hba->device_lock); 2973 spin_unlock(&hba->device_lock);
2974 return -EINVAL; 2974 return -EINVAL;
2975 } 2975 }
2976 spin_unlock(&hba->device_lock); 2976 spin_unlock(&hba->device_lock);
2977 2977
2978 ret = transport->pmode_enable_hba(hba, mode_flag); 2978 ret = transport->pmode_enable_hba(hba, mode_flag);
2979 if (ret < 0) 2979 if (ret < 0)
2980 return -EINVAL; 2980 return -EINVAL;
2981 if (ret > 0) 2981 if (ret > 0)
2982 hba->hba_flags |= HBA_FLAGS_PSCSI_MODE; 2982 hba->hba_flags |= HBA_FLAGS_PSCSI_MODE;
2983 else if (ret == 0) 2983 else if (ret == 0)
2984 hba->hba_flags &= ~HBA_FLAGS_PSCSI_MODE; 2984 hba->hba_flags &= ~HBA_FLAGS_PSCSI_MODE;
2985 2985
2986 return count; 2986 return count;
2987 } 2987 }
2988 2988
2989 SE_HBA_ATTR(hba_mode, S_IRUGO | S_IWUSR); 2989 SE_HBA_ATTR(hba_mode, S_IRUGO | S_IWUSR);
2990 2990
2991 CONFIGFS_EATTR_OPS(target_core_hba, se_hba, hba_group); 2991 CONFIGFS_EATTR_OPS(target_core_hba, se_hba, hba_group);
2992 2992
2993 static void target_core_hba_release(struct config_item *item) 2993 static void target_core_hba_release(struct config_item *item)
2994 { 2994 {
2995 struct se_hba *hba = container_of(to_config_group(item), 2995 struct se_hba *hba = container_of(to_config_group(item),
2996 struct se_hba, hba_group); 2996 struct se_hba, hba_group);
2997 core_delete_hba(hba); 2997 core_delete_hba(hba);
2998 } 2998 }
2999 2999
3000 static struct configfs_attribute *target_core_hba_attrs[] = { 3000 static struct configfs_attribute *target_core_hba_attrs[] = {
3001 &target_core_hba_hba_info.attr, 3001 &target_core_hba_hba_info.attr,
3002 &target_core_hba_hba_mode.attr, 3002 &target_core_hba_hba_mode.attr,
3003 NULL, 3003 NULL,
3004 }; 3004 };
3005 3005
3006 static struct configfs_item_operations target_core_hba_item_ops = { 3006 static struct configfs_item_operations target_core_hba_item_ops = {
3007 .release = target_core_hba_release, 3007 .release = target_core_hba_release,
3008 .show_attribute = target_core_hba_attr_show, 3008 .show_attribute = target_core_hba_attr_show,
3009 .store_attribute = target_core_hba_attr_store, 3009 .store_attribute = target_core_hba_attr_store,
3010 }; 3010 };
3011 3011
3012 static struct config_item_type target_core_hba_cit = { 3012 static struct config_item_type target_core_hba_cit = {
3013 .ct_item_ops = &target_core_hba_item_ops, 3013 .ct_item_ops = &target_core_hba_item_ops,
3014 .ct_group_ops = &target_core_hba_group_ops, 3014 .ct_group_ops = &target_core_hba_group_ops,
3015 .ct_attrs = target_core_hba_attrs, 3015 .ct_attrs = target_core_hba_attrs,
3016 .ct_owner = THIS_MODULE, 3016 .ct_owner = THIS_MODULE,
3017 }; 3017 };
3018 3018
3019 static struct config_group *target_core_call_addhbatotarget( 3019 static struct config_group *target_core_call_addhbatotarget(
3020 struct config_group *group, 3020 struct config_group *group,
3021 const char *name) 3021 const char *name)
3022 { 3022 {
3023 char *se_plugin_str, *str, *str2; 3023 char *se_plugin_str, *str, *str2;
3024 struct se_hba *hba; 3024 struct se_hba *hba;
3025 char buf[TARGET_CORE_NAME_MAX_LEN]; 3025 char buf[TARGET_CORE_NAME_MAX_LEN];
3026 unsigned long plugin_dep_id = 0; 3026 unsigned long plugin_dep_id = 0;
3027 int ret; 3027 int ret;
3028 3028
3029 memset(buf, 0, TARGET_CORE_NAME_MAX_LEN); 3029 memset(buf, 0, TARGET_CORE_NAME_MAX_LEN);
3030 if (strlen(name) >= TARGET_CORE_NAME_MAX_LEN) { 3030 if (strlen(name) >= TARGET_CORE_NAME_MAX_LEN) {
3031 pr_err("Passed *name strlen(): %d exceeds" 3031 pr_err("Passed *name strlen(): %d exceeds"
3032 " TARGET_CORE_NAME_MAX_LEN: %d\n", (int)strlen(name), 3032 " TARGET_CORE_NAME_MAX_LEN: %d\n", (int)strlen(name),
3033 TARGET_CORE_NAME_MAX_LEN); 3033 TARGET_CORE_NAME_MAX_LEN);
3034 return ERR_PTR(-ENAMETOOLONG); 3034 return ERR_PTR(-ENAMETOOLONG);
3035 } 3035 }
3036 snprintf(buf, TARGET_CORE_NAME_MAX_LEN, "%s", name); 3036 snprintf(buf, TARGET_CORE_NAME_MAX_LEN, "%s", name);
3037 3037
3038 str = strstr(buf, "_"); 3038 str = strstr(buf, "_");
3039 if (!str) { 3039 if (!str) {
3040 pr_err("Unable to locate \"_\" for $SUBSYSTEM_PLUGIN_$HOST_ID\n"); 3040 pr_err("Unable to locate \"_\" for $SUBSYSTEM_PLUGIN_$HOST_ID\n");
3041 return ERR_PTR(-EINVAL); 3041 return ERR_PTR(-EINVAL);
3042 } 3042 }
3043 se_plugin_str = buf; 3043 se_plugin_str = buf;
3044 /* 3044 /*
3045 * Special case for subsystem plugins that have "_" in their names. 3045 * Special case for subsystem plugins that have "_" in their names.
3046 * Namely rd_direct and rd_mcp.. 3046 * Namely rd_direct and rd_mcp..
3047 */ 3047 */
3048 str2 = strstr(str+1, "_"); 3048 str2 = strstr(str+1, "_");
3049 if (str2) { 3049 if (str2) {
3050 *str2 = '\0'; /* Terminate for *se_plugin_str */ 3050 *str2 = '\0'; /* Terminate for *se_plugin_str */
3051 str2++; /* Skip to start of plugin dependent ID */ 3051 str2++; /* Skip to start of plugin dependent ID */
3052 str = str2; 3052 str = str2;
3053 } else { 3053 } else {
3054 *str = '\0'; /* Terminate for *se_plugin_str */ 3054 *str = '\0'; /* Terminate for *se_plugin_str */
3055 str++; /* Skip to start of plugin dependent ID */ 3055 str++; /* Skip to start of plugin dependent ID */
3056 } 3056 }
3057 3057
3058 ret = strict_strtoul(str, 0, &plugin_dep_id); 3058 ret = strict_strtoul(str, 0, &plugin_dep_id);
3059 if (ret < 0) { 3059 if (ret < 0) {
3060 pr_err("strict_strtoul() returned %d for" 3060 pr_err("strict_strtoul() returned %d for"
3061 " plugin_dep_id\n", ret); 3061 " plugin_dep_id\n", ret);
3062 return ERR_PTR(-EINVAL); 3062 return ERR_PTR(-EINVAL);
3063 } 3063 }
3064 /* 3064 /*
3065 * Load up TCM subsystem plugins if they have not already been loaded. 3065 * Load up TCM subsystem plugins if they have not already been loaded.
3066 */ 3066 */
3067 transport_subsystem_check_init(); 3067 transport_subsystem_check_init();
3068 3068
3069 hba = core_alloc_hba(se_plugin_str, plugin_dep_id, 0); 3069 hba = core_alloc_hba(se_plugin_str, plugin_dep_id, 0);
3070 if (IS_ERR(hba)) 3070 if (IS_ERR(hba))
3071 return ERR_CAST(hba); 3071 return ERR_CAST(hba);
3072 3072
3073 config_group_init_type_name(&hba->hba_group, name, 3073 config_group_init_type_name(&hba->hba_group, name,
3074 &target_core_hba_cit); 3074 &target_core_hba_cit);
3075 3075
3076 return &hba->hba_group; 3076 return &hba->hba_group;
3077 } 3077 }
3078 3078
3079 static void target_core_call_delhbafromtarget( 3079 static void target_core_call_delhbafromtarget(
3080 struct config_group *group, 3080 struct config_group *group,
3081 struct config_item *item) 3081 struct config_item *item)
3082 { 3082 {
3083 /* 3083 /*
3084 * core_delete_hba() is called from target_core_hba_item_ops->release() 3084 * core_delete_hba() is called from target_core_hba_item_ops->release()
3085 * -> target_core_hba_release() 3085 * -> target_core_hba_release()
3086 */ 3086 */
3087 config_item_put(item); 3087 config_item_put(item);
3088 } 3088 }
3089 3089
3090 static struct configfs_group_operations target_core_group_ops = { 3090 static struct configfs_group_operations target_core_group_ops = {
3091 .make_group = target_core_call_addhbatotarget, 3091 .make_group = target_core_call_addhbatotarget,
3092 .drop_item = target_core_call_delhbafromtarget, 3092 .drop_item = target_core_call_delhbafromtarget,
3093 }; 3093 };
3094 3094
3095 static struct config_item_type target_core_cit = { 3095 static struct config_item_type target_core_cit = {
3096 .ct_item_ops = NULL, 3096 .ct_item_ops = NULL,
3097 .ct_group_ops = &target_core_group_ops, 3097 .ct_group_ops = &target_core_group_ops,
3098 .ct_attrs = NULL, 3098 .ct_attrs = NULL,
3099 .ct_owner = THIS_MODULE, 3099 .ct_owner = THIS_MODULE,
3100 }; 3100 };
3101 3101
3102 /* Stop functions for struct config_item_type target_core_hba_cit */ 3102 /* Stop functions for struct config_item_type target_core_hba_cit */
3103 3103
3104 static int __init target_core_init_configfs(void) 3104 static int __init target_core_init_configfs(void)
3105 { 3105 {
3106 struct config_group *target_cg, *hba_cg = NULL, *alua_cg = NULL; 3106 struct config_group *target_cg, *hba_cg = NULL, *alua_cg = NULL;
3107 struct config_group *lu_gp_cg = NULL; 3107 struct config_group *lu_gp_cg = NULL;
3108 struct configfs_subsystem *subsys; 3108 struct configfs_subsystem *subsys;
3109 struct t10_alua_lu_gp *lu_gp; 3109 struct t10_alua_lu_gp *lu_gp;
3110 int ret; 3110 int ret;
3111 3111
3112 pr_debug("TARGET_CORE[0]: Loading Generic Kernel Storage" 3112 pr_debug("TARGET_CORE[0]: Loading Generic Kernel Storage"
3113 " Engine: %s on %s/%s on "UTS_RELEASE"\n", 3113 " Engine: %s on %s/%s on "UTS_RELEASE"\n",
3114 TARGET_CORE_VERSION, utsname()->sysname, utsname()->machine); 3114 TARGET_CORE_VERSION, utsname()->sysname, utsname()->machine);
3115 3115
3116 subsys = target_core_subsystem[0]; 3116 subsys = target_core_subsystem[0];
3117 config_group_init(&subsys->su_group); 3117 config_group_init(&subsys->su_group);
3118 mutex_init(&subsys->su_mutex); 3118 mutex_init(&subsys->su_mutex);
3119 3119
3120 INIT_LIST_HEAD(&g_tf_list);
3121 mutex_init(&g_tf_lock);
3122 ret = init_se_kmem_caches(); 3120 ret = init_se_kmem_caches();
3123 if (ret < 0) 3121 if (ret < 0)
3124 return ret; 3122 return ret;
3125 /* 3123 /*
3126 * Create $CONFIGFS/target/core default group for HBA <-> Storage Object 3124 * Create $CONFIGFS/target/core default group for HBA <-> Storage Object
3127 * and ALUA Logical Unit Group and Target Port Group infrastructure. 3125 * and ALUA Logical Unit Group and Target Port Group infrastructure.
3128 */ 3126 */
3129 target_cg = &subsys->su_group; 3127 target_cg = &subsys->su_group;
3130 target_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, 3128 target_cg->default_groups = kzalloc(sizeof(struct config_group) * 2,
3131 GFP_KERNEL); 3129 GFP_KERNEL);
3132 if (!target_cg->default_groups) { 3130 if (!target_cg->default_groups) {
3133 pr_err("Unable to allocate target_cg->default_groups\n"); 3131 pr_err("Unable to allocate target_cg->default_groups\n");
3134 goto out_global; 3132 goto out_global;
3135 } 3133 }
3136 3134
3137 config_group_init_type_name(&target_core_hbagroup, 3135 config_group_init_type_name(&target_core_hbagroup,
3138 "core", &target_core_cit); 3136 "core", &target_core_cit);
3139 target_cg->default_groups[0] = &target_core_hbagroup; 3137 target_cg->default_groups[0] = &target_core_hbagroup;
3140 target_cg->default_groups[1] = NULL; 3138 target_cg->default_groups[1] = NULL;
3141 /* 3139 /*
3142 * Create ALUA infrastructure under /sys/kernel/config/target/core/alua/ 3140 * Create ALUA infrastructure under /sys/kernel/config/target/core/alua/
3143 */ 3141 */
3144 hba_cg = &target_core_hbagroup; 3142 hba_cg = &target_core_hbagroup;
3145 hba_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, 3143 hba_cg->default_groups = kzalloc(sizeof(struct config_group) * 2,
3146 GFP_KERNEL); 3144 GFP_KERNEL);
3147 if (!hba_cg->default_groups) { 3145 if (!hba_cg->default_groups) {
3148 pr_err("Unable to allocate hba_cg->default_groups\n"); 3146 pr_err("Unable to allocate hba_cg->default_groups\n");
3149 goto out_global; 3147 goto out_global;
3150 } 3148 }
3151 config_group_init_type_name(&alua_group, 3149 config_group_init_type_name(&alua_group,
3152 "alua", &target_core_alua_cit); 3150 "alua", &target_core_alua_cit);
3153 hba_cg->default_groups[0] = &alua_group; 3151 hba_cg->default_groups[0] = &alua_group;
3154 hba_cg->default_groups[1] = NULL; 3152 hba_cg->default_groups[1] = NULL;
3155 /* 3153 /*
3156 * Add ALUA Logical Unit Group and Target Port Group ConfigFS 3154 * Add ALUA Logical Unit Group and Target Port Group ConfigFS
3157 * groups under /sys/kernel/config/target/core/alua/ 3155 * groups under /sys/kernel/config/target/core/alua/
3158 */ 3156 */
3159 alua_cg = &alua_group; 3157 alua_cg = &alua_group;
3160 alua_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, 3158 alua_cg->default_groups = kzalloc(sizeof(struct config_group) * 2,
3161 GFP_KERNEL); 3159 GFP_KERNEL);
3162 if (!alua_cg->default_groups) { 3160 if (!alua_cg->default_groups) {
3163 pr_err("Unable to allocate alua_cg->default_groups\n"); 3161 pr_err("Unable to allocate alua_cg->default_groups\n");
3164 goto out_global; 3162 goto out_global;
3165 } 3163 }
3166 3164
3167 config_group_init_type_name(&alua_lu_gps_group, 3165 config_group_init_type_name(&alua_lu_gps_group,
3168 "lu_gps", &target_core_alua_lu_gps_cit); 3166 "lu_gps", &target_core_alua_lu_gps_cit);
3169 alua_cg->default_groups[0] = &alua_lu_gps_group; 3167 alua_cg->default_groups[0] = &alua_lu_gps_group;
3170 alua_cg->default_groups[1] = NULL; 3168 alua_cg->default_groups[1] = NULL;
3171 /* 3169 /*
3172 * Add core/alua/lu_gps/default_lu_gp 3170 * Add core/alua/lu_gps/default_lu_gp
3173 */ 3171 */
3174 lu_gp = core_alua_allocate_lu_gp("default_lu_gp", 1); 3172 lu_gp = core_alua_allocate_lu_gp("default_lu_gp", 1);
3175 if (IS_ERR(lu_gp)) 3173 if (IS_ERR(lu_gp))
3176 goto out_global; 3174 goto out_global;
3177 3175
3178 lu_gp_cg = &alua_lu_gps_group; 3176 lu_gp_cg = &alua_lu_gps_group;
3179 lu_gp_cg->default_groups = kzalloc(sizeof(struct config_group) * 2, 3177 lu_gp_cg->default_groups = kzalloc(sizeof(struct config_group) * 2,
3180 GFP_KERNEL); 3178 GFP_KERNEL);
3181 if (!lu_gp_cg->default_groups) { 3179 if (!lu_gp_cg->default_groups) {
3182 pr_err("Unable to allocate lu_gp_cg->default_groups\n"); 3180 pr_err("Unable to allocate lu_gp_cg->default_groups\n");
3183 goto out_global; 3181 goto out_global;
3184 } 3182 }
3185 3183
3186 config_group_init_type_name(&lu_gp->lu_gp_group, "default_lu_gp", 3184 config_group_init_type_name(&lu_gp->lu_gp_group, "default_lu_gp",
3187 &target_core_alua_lu_gp_cit); 3185 &target_core_alua_lu_gp_cit);
3188 lu_gp_cg->default_groups[0] = &lu_gp->lu_gp_group; 3186 lu_gp_cg->default_groups[0] = &lu_gp->lu_gp_group;
3189 lu_gp_cg->default_groups[1] = NULL; 3187 lu_gp_cg->default_groups[1] = NULL;
3190 default_lu_gp = lu_gp; 3188 default_lu_gp = lu_gp;
3191 /* 3189 /*
3192 * Register the target_core_mod subsystem with configfs. 3190 * Register the target_core_mod subsystem with configfs.
3193 */ 3191 */
3194 ret = configfs_register_subsystem(subsys); 3192 ret = configfs_register_subsystem(subsys);
3195 if (ret < 0) { 3193 if (ret < 0) {
3196 pr_err("Error %d while registering subsystem %s\n", 3194 pr_err("Error %d while registering subsystem %s\n",
3197 ret, subsys->su_group.cg_item.ci_namebuf); 3195 ret, subsys->su_group.cg_item.ci_namebuf);
3198 goto out_global; 3196 goto out_global;
3199 } 3197 }
3200 pr_debug("TARGET_CORE[0]: Initialized ConfigFS Fabric" 3198 pr_debug("TARGET_CORE[0]: Initialized ConfigFS Fabric"
3201 " Infrastructure: "TARGET_CORE_CONFIGFS_VERSION" on %s/%s" 3199 " Infrastructure: "TARGET_CORE_CONFIGFS_VERSION" on %s/%s"
3202 " on "UTS_RELEASE"\n", utsname()->sysname, utsname()->machine); 3200 " on "UTS_RELEASE"\n", utsname()->sysname, utsname()->machine);
3203 /* 3201 /*
3204 * Register built-in RAMDISK subsystem logic for virtual LUN 0 3202 * Register built-in RAMDISK subsystem logic for virtual LUN 0
3205 */ 3203 */
3206 ret = rd_module_init(); 3204 ret = rd_module_init();
3207 if (ret < 0) 3205 if (ret < 0)
3208 goto out; 3206 goto out;
3209 3207
3210 if (core_dev_setup_virtual_lun0() < 0) 3208 if (core_dev_setup_virtual_lun0() < 0)
3211 goto out; 3209 goto out;
3212 3210
3213 return 0; 3211 return 0;
3214 3212
3215 out: 3213 out:
3216 configfs_unregister_subsystem(subsys); 3214 configfs_unregister_subsystem(subsys);
3217 core_dev_release_virtual_lun0(); 3215 core_dev_release_virtual_lun0();
3218 rd_module_exit(); 3216 rd_module_exit();
3219 out_global: 3217 out_global:
3220 if (default_lu_gp) { 3218 if (default_lu_gp) {
3221 core_alua_free_lu_gp(default_lu_gp); 3219 core_alua_free_lu_gp(default_lu_gp);
3222 default_lu_gp = NULL; 3220 default_lu_gp = NULL;
3223 } 3221 }
3224 if (lu_gp_cg) 3222 if (lu_gp_cg)
3225 kfree(lu_gp_cg->default_groups); 3223 kfree(lu_gp_cg->default_groups);
3226 if (alua_cg) 3224 if (alua_cg)
3227 kfree(alua_cg->default_groups); 3225 kfree(alua_cg->default_groups);
3228 if (hba_cg) 3226 if (hba_cg)
3229 kfree(hba_cg->default_groups); 3227 kfree(hba_cg->default_groups);
3230 kfree(target_cg->default_groups); 3228 kfree(target_cg->default_groups);
3231 release_se_kmem_caches(); 3229 release_se_kmem_caches();
3232 return ret; 3230 return ret;
3233 } 3231 }
3234 3232
3235 static void __exit target_core_exit_configfs(void) 3233 static void __exit target_core_exit_configfs(void)
3236 { 3234 {
3237 struct configfs_subsystem *subsys; 3235 struct configfs_subsystem *subsys;
3238 struct config_group *hba_cg, *alua_cg, *lu_gp_cg; 3236 struct config_group *hba_cg, *alua_cg, *lu_gp_cg;
3239 struct config_item *item; 3237 struct config_item *item;
3240 int i; 3238 int i;
3241 3239
3242 subsys = target_core_subsystem[0]; 3240 subsys = target_core_subsystem[0];
3243 3241
3244 lu_gp_cg = &alua_lu_gps_group; 3242 lu_gp_cg = &alua_lu_gps_group;
3245 for (i = 0; lu_gp_cg->default_groups[i]; i++) { 3243 for (i = 0; lu_gp_cg->default_groups[i]; i++) {
3246 item = &lu_gp_cg->default_groups[i]->cg_item; 3244 item = &lu_gp_cg->default_groups[i]->cg_item;
3247 lu_gp_cg->default_groups[i] = NULL; 3245 lu_gp_cg->default_groups[i] = NULL;
3248 config_item_put(item); 3246 config_item_put(item);
3249 } 3247 }
3250 kfree(lu_gp_cg->default_groups); 3248 kfree(lu_gp_cg->default_groups);
3251 lu_gp_cg->default_groups = NULL; 3249 lu_gp_cg->default_groups = NULL;
3252 3250
3253 alua_cg = &alua_group; 3251 alua_cg = &alua_group;
3254 for (i = 0; alua_cg->default_groups[i]; i++) { 3252 for (i = 0; alua_cg->default_groups[i]; i++) {
3255 item = &alua_cg->default_groups[i]->cg_item; 3253 item = &alua_cg->default_groups[i]->cg_item;
3256 alua_cg->default_groups[i] = NULL; 3254 alua_cg->default_groups[i] = NULL;
3257 config_item_put(item); 3255 config_item_put(item);
3258 } 3256 }
3259 kfree(alua_cg->default_groups); 3257 kfree(alua_cg->default_groups);
3260 alua_cg->default_groups = NULL; 3258 alua_cg->default_groups = NULL;
3261 3259
3262 hba_cg = &target_core_hbagroup; 3260 hba_cg = &target_core_hbagroup;
3263 for (i = 0; hba_cg->default_groups[i]; i++) { 3261 for (i = 0; hba_cg->default_groups[i]; i++) {
3264 item = &hba_cg->default_groups[i]->cg_item; 3262 item = &hba_cg->default_groups[i]->cg_item;
3265 hba_cg->default_groups[i] = NULL; 3263 hba_cg->default_groups[i] = NULL;
3266 config_item_put(item); 3264 config_item_put(item);
3267 } 3265 }
3268 kfree(hba_cg->default_groups); 3266 kfree(hba_cg->default_groups);
3269 hba_cg->default_groups = NULL; 3267 hba_cg->default_groups = NULL;
3270 /* 3268 /*
3271 * We expect subsys->su_group.default_groups to be released 3269 * We expect subsys->su_group.default_groups to be released
3272 * by configfs subsystem provider logic.. 3270 * by configfs subsystem provider logic..
3273 */ 3271 */
3274 configfs_unregister_subsystem(subsys); 3272 configfs_unregister_subsystem(subsys);
3275 kfree(subsys->su_group.default_groups); 3273 kfree(subsys->su_group.default_groups);
3276 3274
3277 core_alua_free_lu_gp(default_lu_gp); 3275 core_alua_free_lu_gp(default_lu_gp);
3278 default_lu_gp = NULL; 3276 default_lu_gp = NULL;
3279 3277
3280 pr_debug("TARGET_CORE[0]: Released ConfigFS Fabric" 3278 pr_debug("TARGET_CORE[0]: Released ConfigFS Fabric"
3281 " Infrastructure\n"); 3279 " Infrastructure\n");
3282 3280
3283 core_dev_release_virtual_lun0(); 3281 core_dev_release_virtual_lun0();
3284 rd_module_exit(); 3282 rd_module_exit();
3285 release_se_kmem_caches(); 3283 release_se_kmem_caches();
3286 } 3284 }
3287 3285
3288 MODULE_DESCRIPTION("Target_Core_Mod/ConfigFS"); 3286 MODULE_DESCRIPTION("Target_Core_Mod/ConfigFS");
3289 MODULE_AUTHOR("nab@Linux-iSCSI.org"); 3287 MODULE_AUTHOR("nab@Linux-iSCSI.org");
3290 MODULE_LICENSE("GPL"); 3288 MODULE_LICENSE("GPL");
3291 3289
3292 module_init(target_core_init_configfs); 3290 module_init(target_core_init_configfs);
3293 module_exit(target_core_exit_configfs); 3291 module_exit(target_core_exit_configfs);
3294 3292
drivers/target/target_core_pr.c
Diff comments   View file @ d0f474e
1 /******************************************************************************* 1 /*******************************************************************************
2 * Filename: target_core_pr.c 2 * Filename: target_core_pr.c
3 * 3 *
4 * This file contains SPC-3 compliant persistent reservations and 4 * This file contains SPC-3 compliant persistent reservations and
5 * legacy SPC-2 reservations with compatible reservation handling (CRH=1) 5 * legacy SPC-2 reservations with compatible reservation handling (CRH=1)
6 * 6 *
7 * Copyright (c) 2009, 2010 Rising Tide Systems 7 * Copyright (c) 2009, 2010 Rising Tide Systems
8 * Copyright (c) 2009, 2010 Linux-iSCSI.org 8 * Copyright (c) 2009, 2010 Linux-iSCSI.org
9 * 9 *
10 * Nicholas A. Bellinger <nab@kernel.org> 10 * Nicholas A. Bellinger <nab@kernel.org>
11 * 11 *
12 * This program is free software; you can redistribute it and/or modify 12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by 13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or 14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version. 15 * (at your option) any later version.
16 * 16 *
17 * This program is distributed in the hope that it will be useful, 17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of 18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details. 20 * GNU General Public License for more details.
21 * 21 *
22 * You should have received a copy of the GNU General Public License 22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software 23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 24 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
25 * 25 *
26 ******************************************************************************/ 26 ******************************************************************************/
27 27
28 #include <linux/slab.h> 28 #include <linux/slab.h>
29 #include <linux/spinlock.h> 29 #include <linux/spinlock.h>
30 #include <linux/list.h> 30 #include <linux/list.h>
31 #include <scsi/scsi.h> 31 #include <scsi/scsi.h>
32 #include <scsi/scsi_cmnd.h> 32 #include <scsi/scsi_cmnd.h>
33 #include <asm/unaligned.h> 33 #include <asm/unaligned.h>
34 34
35 #include <target/target_core_base.h> 35 #include <target/target_core_base.h>
36 #include <target/target_core_backend.h> 36 #include <target/target_core_backend.h>
37 #include <target/target_core_fabric.h> 37 #include <target/target_core_fabric.h>
38 #include <target/target_core_configfs.h> 38 #include <target/target_core_configfs.h>
39 39
40 #include "target_core_internal.h" 40 #include "target_core_internal.h"
41 #include "target_core_pr.h" 41 #include "target_core_pr.h"
42 #include "target_core_ua.h" 42 #include "target_core_ua.h"
43 43
44 /* 44 /*
45 * Used for Specify Initiator Ports Capable Bit (SPEC_I_PT) 45 * Used for Specify Initiator Ports Capable Bit (SPEC_I_PT)
46 */ 46 */
47 struct pr_transport_id_holder { 47 struct pr_transport_id_holder {
48 int dest_local_nexus; 48 int dest_local_nexus;
49 struct t10_pr_registration *dest_pr_reg; 49 struct t10_pr_registration *dest_pr_reg;
50 struct se_portal_group *dest_tpg; 50 struct se_portal_group *dest_tpg;
51 struct se_node_acl *dest_node_acl; 51 struct se_node_acl *dest_node_acl;
52 struct se_dev_entry *dest_se_deve; 52 struct se_dev_entry *dest_se_deve;
53 struct list_head dest_list; 53 struct list_head dest_list;
54 }; 54 };
55 55
56 int core_pr_dump_initiator_port( 56 int core_pr_dump_initiator_port(
57 struct t10_pr_registration *pr_reg, 57 struct t10_pr_registration *pr_reg,
58 char *buf, 58 char *buf,
59 u32 size) 59 u32 size)
60 { 60 {
61 if (!pr_reg->isid_present_at_reg) 61 if (!pr_reg->isid_present_at_reg)
62 return 0; 62 return 0;
63 63
64 snprintf(buf, size, ",i,0x%s", &pr_reg->pr_reg_isid[0]); 64 snprintf(buf, size, ",i,0x%s", &pr_reg->pr_reg_isid[0]);
65 return 1; 65 return 1;
66 } 66 }
67 67
68 static void __core_scsi3_complete_pro_release(struct se_device *, struct se_node_acl *, 68 static void __core_scsi3_complete_pro_release(struct se_device *, struct se_node_acl *,
69 struct t10_pr_registration *, int); 69 struct t10_pr_registration *, int);
70 70
71 static int core_scsi2_reservation_seq_non_holder( 71 static int core_scsi2_reservation_seq_non_holder(
72 struct se_cmd *cmd, 72 struct se_cmd *cmd,
73 unsigned char *cdb, 73 unsigned char *cdb,
74 u32 pr_reg_type) 74 u32 pr_reg_type)
75 { 75 {
76 switch (cdb[0]) { 76 switch (cdb[0]) {
77 case INQUIRY: 77 case INQUIRY:
78 case RELEASE: 78 case RELEASE:
79 case RELEASE_10: 79 case RELEASE_10:
80 return 0; 80 return 0;
81 default: 81 default:
82 return 1; 82 return 1;
83 } 83 }
84 84
85 return 1; 85 return 1;
86 } 86 }
87 87
88 static int core_scsi2_reservation_check(struct se_cmd *cmd, u32 *pr_reg_type) 88 static int core_scsi2_reservation_check(struct se_cmd *cmd, u32 *pr_reg_type)
89 { 89 {
90 struct se_device *dev = cmd->se_dev; 90 struct se_device *dev = cmd->se_dev;
91 struct se_session *sess = cmd->se_sess; 91 struct se_session *sess = cmd->se_sess;
92 int ret; 92 int ret;
93 93
94 if (!sess) 94 if (!sess)
95 return 0; 95 return 0;
96 96
97 spin_lock(&dev->dev_reservation_lock); 97 spin_lock(&dev->dev_reservation_lock);
98 if (!dev->dev_reserved_node_acl || !sess) { 98 if (!dev->dev_reserved_node_acl || !sess) {
99 spin_unlock(&dev->dev_reservation_lock); 99 spin_unlock(&dev->dev_reservation_lock);
100 return 0; 100 return 0;
101 } 101 }
102 if (dev->dev_reserved_node_acl != sess->se_node_acl) { 102 if (dev->dev_reserved_node_acl != sess->se_node_acl) {
103 spin_unlock(&dev->dev_reservation_lock); 103 spin_unlock(&dev->dev_reservation_lock);
104 return -EINVAL; 104 return -EINVAL;
105 } 105 }
106 if (!(dev->dev_flags & DF_SPC2_RESERVATIONS_WITH_ISID)) { 106 if (!(dev->dev_flags & DF_SPC2_RESERVATIONS_WITH_ISID)) {
107 spin_unlock(&dev->dev_reservation_lock); 107 spin_unlock(&dev->dev_reservation_lock);
108 return 0; 108 return 0;
109 } 109 }
110 ret = (dev->dev_res_bin_isid == sess->sess_bin_isid) ? 0 : -EINVAL; 110 ret = (dev->dev_res_bin_isid == sess->sess_bin_isid) ? 0 : -EINVAL;
111 spin_unlock(&dev->dev_reservation_lock); 111 spin_unlock(&dev->dev_reservation_lock);
112 112
113 return ret; 113 return ret;
114 } 114 }
115 115
116 static struct t10_pr_registration *core_scsi3_locate_pr_reg(struct se_device *, 116 static struct t10_pr_registration *core_scsi3_locate_pr_reg(struct se_device *,
117 struct se_node_acl *, struct se_session *); 117 struct se_node_acl *, struct se_session *);
118 static void core_scsi3_put_pr_reg(struct t10_pr_registration *); 118 static void core_scsi3_put_pr_reg(struct t10_pr_registration *);
119 119
120 static int target_check_scsi2_reservation_conflict(struct se_cmd *cmd, int *ret) 120 static int target_check_scsi2_reservation_conflict(struct se_cmd *cmd, int *ret)
121 { 121 {
122 struct se_session *se_sess = cmd->se_sess; 122 struct se_session *se_sess = cmd->se_sess;
123 struct se_subsystem_dev *su_dev = cmd->se_dev->se_sub_dev; 123 struct se_subsystem_dev *su_dev = cmd->se_dev->se_sub_dev;
124 struct t10_pr_registration *pr_reg; 124 struct t10_pr_registration *pr_reg;
125 struct t10_reservation *pr_tmpl = &su_dev->t10_pr; 125 struct t10_reservation *pr_tmpl = &su_dev->t10_pr;
126 int crh = (su_dev->t10_pr.res_type == SPC3_PERSISTENT_RESERVATIONS); 126 int crh = (su_dev->t10_pr.res_type == SPC3_PERSISTENT_RESERVATIONS);
127 int conflict = 0; 127 int conflict = 0;
128 128
129 if (!crh) 129 if (!crh)
130 return false; 130 return false;
131 131
132 pr_reg = core_scsi3_locate_pr_reg(cmd->se_dev, se_sess->se_node_acl, 132 pr_reg = core_scsi3_locate_pr_reg(cmd->se_dev, se_sess->se_node_acl,
133 se_sess); 133 se_sess);
134 if (pr_reg) { 134 if (pr_reg) {
135 /* 135 /*
136 * From spc4r17 5.7.3 Exceptions to SPC-2 RESERVE and RELEASE 136 * From spc4r17 5.7.3 Exceptions to SPC-2 RESERVE and RELEASE
137 * behavior 137 * behavior
138 * 138 *
139 * A RESERVE(6) or RESERVE(10) command shall complete with GOOD 139 * A RESERVE(6) or RESERVE(10) command shall complete with GOOD
140 * status, but no reservation shall be established and the 140 * status, but no reservation shall be established and the
141 * persistent reservation shall not be changed, if the command 141 * persistent reservation shall not be changed, if the command
142 * is received from a) and b) below. 142 * is received from a) and b) below.
143 * 143 *
144 * A RELEASE(6) or RELEASE(10) command shall complete with GOOD 144 * A RELEASE(6) or RELEASE(10) command shall complete with GOOD
145 * status, but the persistent reservation shall not be released, 145 * status, but the persistent reservation shall not be released,
146 * if the command is received from a) and b) 146 * if the command is received from a) and b)
147 * 147 *
148 * a) An I_T nexus that is a persistent reservation holder; or 148 * a) An I_T nexus that is a persistent reservation holder; or
149 * b) An I_T nexus that is registered if a registrants only or 149 * b) An I_T nexus that is registered if a registrants only or
150 * all registrants type persistent reservation is present. 150 * all registrants type persistent reservation is present.
151 * 151 *
152 * In all other cases, a RESERVE(6) command, RESERVE(10) command, 152 * In all other cases, a RESERVE(6) command, RESERVE(10) command,
153 * RELEASE(6) command, or RELEASE(10) command shall be processed 153 * RELEASE(6) command, or RELEASE(10) command shall be processed
154 * as defined in SPC-2. 154 * as defined in SPC-2.
155 */ 155 */
156 if (pr_reg->pr_res_holder) { 156 if (pr_reg->pr_res_holder) {
157 core_scsi3_put_pr_reg(pr_reg); 157 core_scsi3_put_pr_reg(pr_reg);
158 *ret = 0; 158 *ret = 0;
159 return false; 159 return false;
160 } 160 }
161 if ((pr_reg->pr_res_type == PR_TYPE_WRITE_EXCLUSIVE_REGONLY) || 161 if ((pr_reg->pr_res_type == PR_TYPE_WRITE_EXCLUSIVE_REGONLY) ||
162 (pr_reg->pr_res_type == PR_TYPE_EXCLUSIVE_ACCESS_REGONLY) || 162 (pr_reg->pr_res_type == PR_TYPE_EXCLUSIVE_ACCESS_REGONLY) ||
163 (pr_reg->pr_res_type == PR_TYPE_WRITE_EXCLUSIVE_ALLREG) || 163 (pr_reg->pr_res_type == PR_TYPE_WRITE_EXCLUSIVE_ALLREG) ||
164 (pr_reg->pr_res_type == PR_TYPE_EXCLUSIVE_ACCESS_ALLREG)) { 164 (pr_reg->pr_res_type == PR_TYPE_EXCLUSIVE_ACCESS_ALLREG)) {
165 core_scsi3_put_pr_reg(pr_reg); 165 core_scsi3_put_pr_reg(pr_reg);
166 *ret = 0; 166 *ret = 0;
167 return true; 167 return true;
168 } 168 }
169 core_scsi3_put_pr_reg(pr_reg); 169 core_scsi3_put_pr_reg(pr_reg);
170 conflict = 1; 170 conflict = 1;
171 } else { 171 } else {
172 /* 172 /*
173 * Following spc2r20 5.5.1 Reservations overview: 173 * Following spc2r20 5.5.1 Reservations overview:
174 * 174 *
175 * If a logical unit has executed a PERSISTENT RESERVE OUT 175 * If a logical unit has executed a PERSISTENT RESERVE OUT
176 * command with the REGISTER or the REGISTER AND IGNORE 176 * command with the REGISTER or the REGISTER AND IGNORE
177 * EXISTING KEY service action and is still registered by any 177 * EXISTING KEY service action and is still registered by any
178 * initiator, all RESERVE commands and all RELEASE commands 178 * initiator, all RESERVE commands and all RELEASE commands
179 * regardless of initiator shall conflict and shall terminate 179 * regardless of initiator shall conflict and shall terminate
180 * with a RESERVATION CONFLICT status. 180 * with a RESERVATION CONFLICT status.
181 */ 181 */
182 spin_lock(&pr_tmpl->registration_lock); 182 spin_lock(&pr_tmpl->registration_lock);
183 conflict = (list_empty(&pr_tmpl->registration_list)) ? 0 : 1; 183 conflict = (list_empty(&pr_tmpl->registration_list)) ? 0 : 1;
184 spin_unlock(&pr_tmpl->registration_lock); 184 spin_unlock(&pr_tmpl->registration_lock);
185 } 185 }
186 186
187 if (conflict) { 187 if (conflict) {
188 pr_err("Received legacy SPC-2 RESERVE/RELEASE" 188 pr_err("Received legacy SPC-2 RESERVE/RELEASE"
189 " while active SPC-3 registrations exist," 189 " while active SPC-3 registrations exist,"
190 " returning RESERVATION_CONFLICT\n"); 190 " returning RESERVATION_CONFLICT\n");
191 cmd->scsi_sense_reason = TCM_RESERVATION_CONFLICT; 191 cmd->scsi_sense_reason = TCM_RESERVATION_CONFLICT;
192 return true; 192 return true;
193 } 193 }
194 194
195 return false; 195 return false;
196 } 196 }
197 197
198 int target_scsi2_reservation_release(struct se_task *task) 198 int target_scsi2_reservation_release(struct se_task *task)
199 { 199 {
200 struct se_cmd *cmd = task->task_se_cmd; 200 struct se_cmd *cmd = task->task_se_cmd;
201 struct se_device *dev = cmd->se_dev; 201 struct se_device *dev = cmd->se_dev;
202 struct se_session *sess = cmd->se_sess; 202 struct se_session *sess = cmd->se_sess;
203 struct se_portal_group *tpg = sess->se_tpg; 203 struct se_portal_group *tpg = sess->se_tpg;
204 int ret = 0; 204 int ret = 0;
205 205
206 if (!sess || !tpg) 206 if (!sess || !tpg)
207 goto out; 207 goto out;
208 if (target_check_scsi2_reservation_conflict(cmd, &ret)) 208 if (target_check_scsi2_reservation_conflict(cmd, &ret))
209 goto out; 209 goto out;
210 210
211 ret = 0; 211 ret = 0;
212 spin_lock(&dev->dev_reservation_lock); 212 spin_lock(&dev->dev_reservation_lock);
213 if (!dev->dev_reserved_node_acl || !sess) 213 if (!dev->dev_reserved_node_acl || !sess)
214 goto out_unlock; 214 goto out_unlock;
215 215
216 if (dev->dev_reserved_node_acl != sess->se_node_acl) 216 if (dev->dev_reserved_node_acl != sess->se_node_acl)
217 goto out_unlock; 217 goto out_unlock;
218 218
219 dev->dev_reserved_node_acl = NULL; 219 dev->dev_reserved_node_acl = NULL;
220 dev->dev_flags &= ~DF_SPC2_RESERVATIONS; 220 dev->dev_flags &= ~DF_SPC2_RESERVATIONS;
221 if (dev->dev_flags & DF_SPC2_RESERVATIONS_WITH_ISID) { 221 if (dev->dev_flags & DF_SPC2_RESERVATIONS_WITH_ISID) {
222 dev->dev_res_bin_isid = 0; 222 dev->dev_res_bin_isid = 0;
223 dev->dev_flags &= ~DF_SPC2_RESERVATIONS_WITH_ISID; 223 dev->dev_flags &= ~DF_SPC2_RESERVATIONS_WITH_ISID;
224 } 224 }
225 pr_debug("SCSI-2 Released reservation for %s LUN: %u ->" 225 pr_debug("SCSI-2 Released reservation for %s LUN: %u ->"
226 " MAPPED LUN: %u for %s\n", tpg->se_tpg_tfo->get_fabric_name(), 226 " MAPPED LUN: %u for %s\n", tpg->se_tpg_tfo->get_fabric_name(),
227 cmd->se_lun->unpacked_lun, cmd->se_deve->mapped_lun, 227 cmd->se_lun->unpacked_lun, cmd->se_deve->mapped_lun,
228 sess->se_node_acl->initiatorname); 228 sess->se_node_acl->initiatorname);
229 229
230 out_unlock: 230 out_unlock:
231 spin_unlock(&dev->dev_reservation_lock); 231 spin_unlock(&dev->dev_reservation_lock);
232 out: 232 out:
233 if (!ret) { 233 if (!ret) {
234 task->task_scsi_status = GOOD; 234 task->task_scsi_status = GOOD;
235 transport_complete_task(task, 1); 235 transport_complete_task(task, 1);
236 } 236 }
237 return ret; 237 return ret;
238 } 238 }
239 239
240 int target_scsi2_reservation_reserve(struct se_task *task) 240 int target_scsi2_reservation_reserve(struct se_task *task)
241 { 241 {
242 struct se_cmd *cmd = task->task_se_cmd; 242 struct se_cmd *cmd = task->task_se_cmd;
243 struct se_device *dev = cmd->se_dev; 243 struct se_device *dev = cmd->se_dev;
244 struct se_session *sess = cmd->se_sess; 244 struct se_session *sess = cmd->se_sess;
245 struct se_portal_group *tpg = sess->se_tpg; 245 struct se_portal_group *tpg = sess->se_tpg;
246 int ret = 0; 246 int ret = 0;
247 247
248 if ((cmd->t_task_cdb[1] & 0x01) && 248 if ((cmd->t_task_cdb[1] & 0x01) &&
249 (cmd->t_task_cdb[1] & 0x02)) { 249 (cmd->t_task_cdb[1] & 0x02)) {
250 pr_err("LongIO and Obselete Bits set, returning" 250 pr_err("LongIO and Obselete Bits set, returning"
251 " ILLEGAL_REQUEST\n"); 251 " ILLEGAL_REQUEST\n");
252 cmd->scsi_sense_reason = TCM_UNSUPPORTED_SCSI_OPCODE; 252 cmd->scsi_sense_reason = TCM_UNSUPPORTED_SCSI_OPCODE;
253 ret = -EINVAL; 253 ret = -EINVAL;
254 goto out; 254 goto out;
255 } 255 }
256 /* 256 /*
257 * This is currently the case for target_core_mod passthrough struct se_cmd 257 * This is currently the case for target_core_mod passthrough struct se_cmd
258 * ops 258 * ops
259 */ 259 */
260 if (!sess || !tpg) 260 if (!sess || !tpg)
261 goto out; 261 goto out;
262 if (target_check_scsi2_reservation_conflict(cmd, &ret)) 262 if (target_check_scsi2_reservation_conflict(cmd, &ret))
263 goto out; 263 goto out;
264 264
265 ret = 0; 265 ret = 0;
266 spin_lock(&dev->dev_reservation_lock); 266 spin_lock(&dev->dev_reservation_lock);
267 if (dev->dev_reserved_node_acl && 267 if (dev->dev_reserved_node_acl &&
268 (dev->dev_reserved_node_acl != sess->se_node_acl)) { 268 (dev->dev_reserved_node_acl != sess->se_node_acl)) {
269 pr_err("SCSI-2 RESERVATION CONFLIFT for %s fabric\n", 269 pr_err("SCSI-2 RESERVATION CONFLIFT for %s fabric\n",
270 tpg->se_tpg_tfo->get_fabric_name()); 270 tpg->se_tpg_tfo->get_fabric_name());
271 pr_err("Original reserver LUN: %u %s\n", 271 pr_err("Original reserver LUN: %u %s\n",
272 cmd->se_lun->unpacked_lun, 272 cmd->se_lun->unpacked_lun,
273 dev->dev_reserved_node_acl->initiatorname); 273 dev->dev_reserved_node_acl->initiatorname);
274 pr_err("Current attempt - LUN: %u -> MAPPED LUN: %u" 274 pr_err("Current attempt - LUN: %u -> MAPPED LUN: %u"
275 " from %s \n", cmd->se_lun->unpacked_lun, 275 " from %s \n", cmd->se_lun->unpacked_lun,
276 cmd->se_deve->mapped_lun, 276 cmd->se_deve->mapped_lun,
277 sess->se_node_acl->initiatorname); 277 sess->se_node_acl->initiatorname);
278 cmd->scsi_sense_reason = TCM_RESERVATION_CONFLICT; 278 cmd->scsi_sense_reason = TCM_RESERVATION_CONFLICT;
279 ret = -EINVAL; 279 ret = -EINVAL;
280 goto out_unlock; 280 goto out_unlock;
281 } 281 }
282 282
283 dev->dev_reserved_node_acl = sess->se_node_acl; 283 dev->dev_reserved_node_acl = sess->se_node_acl;
284 dev->dev_flags |= DF_SPC2_RESERVATIONS; 284 dev->dev_flags |= DF_SPC2_RESERVATIONS;
285 if (sess->sess_bin_isid != 0) { 285 if (sess->sess_bin_isid != 0) {
286 dev->dev_res_bin_isid = sess->sess_bin_isid; 286 dev->dev_res_bin_isid = sess->sess_bin_isid;
287 dev->dev_flags |= DF_SPC2_RESERVATIONS_WITH_ISID; 287 dev->dev_flags |= DF_SPC2_RESERVATIONS_WITH_ISID;
288 } 288 }
289 pr_debug("SCSI-2 Reserved %s LUN: %u -> MAPPED LUN: %u" 289 pr_debug("SCSI-2 Reserved %s LUN: %u -> MAPPED LUN: %u"
290 " for %s\n", tpg->se_tpg_tfo->get_fabric_name(), 290 " for %s\n", tpg->se_tpg_tfo->get_fabric_name(),
291 cmd->se_lun->unpacked_lun, cmd->se_deve->mapped_lun, 291 cmd->se_lun->unpacked_lun, cmd->se_deve->mapped_lun,
292 sess->se_node_acl->initiatorname); 292 sess->se_node_acl->initiatorname);
293 293
294 out_unlock: 294 out_unlock:
295 spin_unlock(&dev->dev_reservation_lock); 295 spin_unlock(&dev->dev_reservation_lock);
296 out: 296 out:
297 if (!ret) { 297 if (!ret) {
298 task->task_scsi_status = GOOD; 298 task->task_scsi_status = GOOD;
299 transport_complete_task(task, 1); 299 transport_complete_task(task, 1);
300 } 300 }
301 return ret; 301 return ret;
302 } 302 }
303 303
304 304
305 /* 305 /*
306 * Begin SPC-3/SPC-4 Persistent Reservations emulation support 306 * Begin SPC-3/SPC-4 Persistent Reservations emulation support
307 * 307 *
308 * This function is called by those initiator ports who are *NOT* 308 * This function is called by those initiator ports who are *NOT*
309 * the active PR reservation holder when a reservation is present. 309 * the active PR reservation holder when a reservation is present.
310 */ 310 */
311 static int core_scsi3_pr_seq_non_holder( 311 static int core_scsi3_pr_seq_non_holder(
312 struct se_cmd *cmd, 312 struct se_cmd *cmd,
313 unsigned char *cdb, 313 unsigned char *cdb,
314 u32 pr_reg_type) 314 u32 pr_reg_type)
315 { 315 {
316 struct se_dev_entry *se_deve; 316 struct se_dev_entry *se_deve;
317 struct se_session *se_sess = cmd->se_sess; 317 struct se_session *se_sess = cmd->se_sess;
318 int other_cdb = 0, ignore_reg; 318 int other_cdb = 0, ignore_reg;
319 int registered_nexus = 0, ret = 1; /* Conflict by default */ 319 int registered_nexus = 0, ret = 1; /* Conflict by default */
320 int all_reg = 0, reg_only = 0; /* ALL_REG, REG_ONLY */ 320 int all_reg = 0, reg_only = 0; /* ALL_REG, REG_ONLY */
321 int we = 0; /* Write Exclusive */ 321 int we = 0; /* Write Exclusive */
322 int legacy = 0; /* Act like a legacy device and return 322 int legacy = 0; /* Act like a legacy device and return
323 * RESERVATION CONFLICT on some CDBs */ 323 * RESERVATION CONFLICT on some CDBs */
324 /* 324 /*
325 * A legacy SPC-2 reservation is being held. 325 * A legacy SPC-2 reservation is being held.
326 */ 326 */
327 if (cmd->se_dev->dev_flags & DF_SPC2_RESERVATIONS) 327 if (cmd->se_dev->dev_flags & DF_SPC2_RESERVATIONS)
328 return core_scsi2_reservation_seq_non_holder(cmd, 328 return core_scsi2_reservation_seq_non_holder(cmd,
329 cdb, pr_reg_type); 329 cdb, pr_reg_type);
330 330
331 se_deve = &se_sess->se_node_acl->device_list[cmd->orig_fe_lun]; 331 se_deve = &se_sess->se_node_acl->device_list[cmd->orig_fe_lun];
332 /* 332 /*
333 * Determine if the registration should be ignored due to 333 * Determine if the registration should be ignored due to
334 * non-matching ISIDs in core_scsi3_pr_reservation_check(). 334 * non-matching ISIDs in core_scsi3_pr_reservation_check().
335 */ 335 */
336 ignore_reg = (pr_reg_type & 0x80000000); 336 ignore_reg = (pr_reg_type & 0x80000000);
337 if (ignore_reg) 337 if (ignore_reg)
338 pr_reg_type &= ~0x80000000; 338 pr_reg_type &= ~0x80000000;
339 339
340 switch (pr_reg_type) { 340 switch (pr_reg_type) {
341 case PR_TYPE_WRITE_EXCLUSIVE: 341 case PR_TYPE_WRITE_EXCLUSIVE:
342 we = 1; 342 we = 1;
343 case PR_TYPE_EXCLUSIVE_ACCESS: 343 case PR_TYPE_EXCLUSIVE_ACCESS:
344 /* 344 /*
345 * Some commands are only allowed for the persistent reservation 345 * Some commands are only allowed for the persistent reservation
346 * holder. 346 * holder.
347 */ 347 */
348 if ((se_deve->def_pr_registered) && !(ignore_reg)) 348 if ((se_deve->def_pr_registered) && !(ignore_reg))
349 registered_nexus = 1; 349 registered_nexus = 1;
350 break; 350 break;
351 case PR_TYPE_WRITE_EXCLUSIVE_REGONLY: 351 case PR_TYPE_WRITE_EXCLUSIVE_REGONLY:
352 we = 1; 352 we = 1;
353 case PR_TYPE_EXCLUSIVE_ACCESS_REGONLY: 353 case PR_TYPE_EXCLUSIVE_ACCESS_REGONLY:
354 /* 354 /*
355 * Some commands are only allowed for registered I_T Nexuses. 355 * Some commands are only allowed for registered I_T Nexuses.
356 */ 356 */
357 reg_only = 1; 357 reg_only = 1;
358 if ((se_deve->def_pr_registered) && !(ignore_reg)) 358 if ((se_deve->def_pr_registered) && !(ignore_reg))
359 registered_nexus = 1; 359 registered_nexus = 1;
360 break; 360 break;
361 case PR_TYPE_WRITE_EXCLUSIVE_ALLREG: 361 case PR_TYPE_WRITE_EXCLUSIVE_ALLREG:
362 we = 1; 362 we = 1;
363 case PR_TYPE_EXCLUSIVE_ACCESS_ALLREG: 363 case PR_TYPE_EXCLUSIVE_ACCESS_ALLREG:
364 /* 364 /*
365 * Each registered I_T Nexus is a reservation holder. 365 * Each registered I_T Nexus is a reservation holder.
366 */ 366 */
367 all_reg = 1; 367 all_reg = 1;
368 if ((se_deve->def_pr_registered) && !(ignore_reg)) 368 if ((se_deve->def_pr_registered) && !(ignore_reg))
369 registered_nexus = 1; 369 registered_nexus = 1;
370 break; 370 break;
371 default: 371 default:
372 return -EINVAL; 372 return -EINVAL;
373 } 373 }
374 /* 374 /*
375 * Referenced from spc4r17 table 45 for *NON* PR holder access 375 * Referenced from spc4r17 table 45 for *NON* PR holder access
376 */ 376 */
377 switch (cdb[0]) { 377 switch (cdb[0]) {
378 case SECURITY_PROTOCOL_IN: 378 case SECURITY_PROTOCOL_IN:
379 if (registered_nexus) 379 if (registered_nexus)
380 return 0; 380 return 0;
381 ret = (we) ? 0 : 1; 381 ret = (we) ? 0 : 1;
382 break; 382 break;
383 case MODE_SENSE: 383 case MODE_SENSE:
384 case MODE_SENSE_10: 384 case MODE_SENSE_10:
385 case READ_ATTRIBUTE: 385 case READ_ATTRIBUTE:
386 case READ_BUFFER: 386 case READ_BUFFER:
387 case RECEIVE_DIAGNOSTIC: 387 case RECEIVE_DIAGNOSTIC:
388 if (legacy) { 388 if (legacy) {
389 ret = 1; 389 ret = 1;
390 break; 390 break;
391 } 391 }
392 if (registered_nexus) { 392 if (registered_nexus) {
393 ret = 0; 393 ret = 0;
394 break; 394 break;
395 } 395 }
396 ret = (we) ? 0 : 1; /* Allowed Write Exclusive */ 396 ret = (we) ? 0 : 1; /* Allowed Write Exclusive */
397 break; 397 break;
398 case PERSISTENT_RESERVE_OUT: 398 case PERSISTENT_RESERVE_OUT:
399 /* 399 /*
400 * This follows PERSISTENT_RESERVE_OUT service actions that 400 * This follows PERSISTENT_RESERVE_OUT service actions that
401 * are allowed in the presence of various reservations. 401 * are allowed in the presence of various reservations.
402 * See spc4r17, table 46 402 * See spc4r17, table 46
403 */ 403 */
404 switch (cdb[1] & 0x1f) { 404 switch (cdb[1] & 0x1f) {
405 case PRO_CLEAR: 405 case PRO_CLEAR:
406 case PRO_PREEMPT: 406 case PRO_PREEMPT:
407 case PRO_PREEMPT_AND_ABORT: 407 case PRO_PREEMPT_AND_ABORT:
408 ret = (registered_nexus) ? 0 : 1; 408 ret = (registered_nexus) ? 0 : 1;
409 break; 409 break;
410 case PRO_REGISTER: 410 case PRO_REGISTER:
411 case PRO_REGISTER_AND_IGNORE_EXISTING_KEY: 411 case PRO_REGISTER_AND_IGNORE_EXISTING_KEY:
412 ret = 0; 412 ret = 0;
413 break; 413 break;
414 case PRO_REGISTER_AND_MOVE: 414 case PRO_REGISTER_AND_MOVE:
415 case PRO_RESERVE: 415 case PRO_RESERVE:
416 ret = 1; 416 ret = 1;
417 break; 417 break;
418 case PRO_RELEASE: 418 case PRO_RELEASE:
419 ret = (registered_nexus) ? 0 : 1; 419 ret = (registered_nexus) ? 0 : 1;
420 break; 420 break;
421 default: 421 default:
422 pr_err("Unknown PERSISTENT_RESERVE_OUT service" 422 pr_err("Unknown PERSISTENT_RESERVE_OUT service"
423 " action: 0x%02x\n", cdb[1] & 0x1f); 423 " action: 0x%02x\n", cdb[1] & 0x1f);
424 return -EINVAL; 424 return -EINVAL;
425 } 425 }
426 break; 426 break;
427 case RELEASE: 427 case RELEASE:
428 case RELEASE_10: 428 case RELEASE_10:
429 /* Handled by CRH=1 in target_scsi2_reservation_release() */ 429 /* Handled by CRH=1 in target_scsi2_reservation_release() */
430 ret = 0; 430 ret = 0;
431 break; 431 break;
432 case RESERVE: 432 case RESERVE:
433 case RESERVE_10: 433 case RESERVE_10:
434 /* Handled by CRH=1 in target_scsi2_reservation_reserve() */ 434 /* Handled by CRH=1 in target_scsi2_reservation_reserve() */
435 ret = 0; 435 ret = 0;
436 break; 436 break;
437 case TEST_UNIT_READY: 437 case TEST_UNIT_READY:
438 ret = (legacy) ? 1 : 0; /* Conflict for legacy */ 438 ret = (legacy) ? 1 : 0; /* Conflict for legacy */
439 break; 439 break;
440 case MAINTENANCE_IN: 440 case MAINTENANCE_IN:
441 switch (cdb[1] & 0x1f) { 441 switch (cdb[1] & 0x1f) {
442 case MI_MANAGEMENT_PROTOCOL_IN: 442 case MI_MANAGEMENT_PROTOCOL_IN:
443 if (registered_nexus) { 443 if (registered_nexus) {
444 ret = 0; 444 ret = 0;
445 break; 445 break;
446 } 446 }
447 ret = (we) ? 0 : 1; /* Allowed Write Exclusive */ 447 ret = (we) ? 0 : 1; /* Allowed Write Exclusive */
448 break; 448 break;
449 case MI_REPORT_SUPPORTED_OPERATION_CODES: 449 case MI_REPORT_SUPPORTED_OPERATION_CODES:
450 case MI_REPORT_SUPPORTED_TASK_MANAGEMENT_FUNCTIONS: 450 case MI_REPORT_SUPPORTED_TASK_MANAGEMENT_FUNCTIONS:
451 if (legacy) { 451 if (legacy) {
452 ret = 1; 452 ret = 1;
453 break; 453 break;
454 } 454 }
455 if (registered_nexus) { 455 if (registered_nexus) {
456 ret = 0; 456 ret = 0;
457 break; 457 break;
458 } 458 }
459 ret = (we) ? 0 : 1; /* Allowed Write Exclusive */ 459 ret = (we) ? 0 : 1; /* Allowed Write Exclusive */
460 break; 460 break;
461 case MI_REPORT_ALIASES: 461 case MI_REPORT_ALIASES:
462 case MI_REPORT_IDENTIFYING_INFORMATION: 462 case MI_REPORT_IDENTIFYING_INFORMATION:
463 case MI_REPORT_PRIORITY: 463 case MI_REPORT_PRIORITY:
464 case MI_REPORT_TARGET_PGS: 464 case MI_REPORT_TARGET_PGS:
465 case MI_REPORT_TIMESTAMP: 465 case MI_REPORT_TIMESTAMP:
466 ret = 0; /* Allowed */ 466 ret = 0; /* Allowed */
467 break; 467 break;
468 default: 468 default:
469 pr_err("Unknown MI Service Action: 0x%02x\n", 469 pr_err("Unknown MI Service Action: 0x%02x\n",
470 (cdb[1] & 0x1f)); 470 (cdb[1] & 0x1f));
471 return -EINVAL; 471 return -EINVAL;
472 } 472 }
473 break; 473 break;
474 case ACCESS_CONTROL_IN: 474 case ACCESS_CONTROL_IN:
475 case ACCESS_CONTROL_OUT: 475 case ACCESS_CONTROL_OUT:
476 case INQUIRY: 476 case INQUIRY:
477 case LOG_SENSE: 477 case LOG_SENSE:
478 case READ_MEDIA_SERIAL_NUMBER: 478 case READ_MEDIA_SERIAL_NUMBER:
479 case REPORT_LUNS: 479 case REPORT_LUNS:
480 case REQUEST_SENSE: 480 case REQUEST_SENSE:
481 case PERSISTENT_RESERVE_IN: 481 case PERSISTENT_RESERVE_IN:
482 ret = 0; /*/ Allowed CDBs */ 482 ret = 0; /*/ Allowed CDBs */
483 break; 483 break;
484 default: 484 default:
485 other_cdb = 1; 485 other_cdb = 1;
486 break; 486 break;
487 } 487 }
488 /* 488 /*
489 * Case where the CDB is explicitly allowed in the above switch 489 * Case where the CDB is explicitly allowed in the above switch
490 * statement. 490 * statement.
491 */ 491 */
492 if (!ret && !other_cdb) { 492 if (!ret && !other_cdb) {
493 #if 0 493 #if 0
494 pr_debug("Allowing explict CDB: 0x%02x for %s" 494 pr_debug("Allowing explict CDB: 0x%02x for %s"
495 " reservation holder\n", cdb[0], 495 " reservation holder\n", cdb[0],
496 core_scsi3_pr_dump_type(pr_reg_type)); 496 core_scsi3_pr_dump_type(pr_reg_type));
497 #endif 497 #endif
498 return ret; 498 return ret;
499 } 499 }
500 /* 500 /*
501 * Check if write exclusive initiator ports *NOT* holding the 501 * Check if write exclusive initiator ports *NOT* holding the
502 * WRITE_EXCLUSIVE_* reservation. 502 * WRITE_EXCLUSIVE_* reservation.
503 */ 503 */
504 if ((we) && !(registered_nexus)) { 504 if ((we) && !(registered_nexus)) {
505 if (cmd->data_direction == DMA_TO_DEVICE) { 505 if (cmd->data_direction == DMA_TO_DEVICE) {
506 /* 506 /*
507 * Conflict for write exclusive 507 * Conflict for write exclusive
508 */ 508 */
509 pr_debug("%s Conflict for unregistered nexus" 509 pr_debug("%s Conflict for unregistered nexus"
510 " %s CDB: 0x%02x to %s reservation\n", 510 " %s CDB: 0x%02x to %s reservation\n",
511 transport_dump_cmd_direction(cmd), 511 transport_dump_cmd_direction(cmd),
512 se_sess->se_node_acl->initiatorname, cdb[0], 512 se_sess->se_node_acl->initiatorname, cdb[0],
513 core_scsi3_pr_dump_type(pr_reg_type)); 513 core_scsi3_pr_dump_type(pr_reg_type));
514 return 1; 514 return 1;
515 } else { 515 } else {
516 /* 516 /*
517 * Allow non WRITE CDBs for all Write Exclusive 517 * Allow non WRITE CDBs for all Write Exclusive
518 * PR TYPEs to pass for registered and 518 * PR TYPEs to pass for registered and
519 * non-registered_nexuxes NOT holding the reservation. 519 * non-registered_nexuxes NOT holding the reservation.
520 * 520 *
521 * We only make noise for the unregisterd nexuses, 521 * We only make noise for the unregisterd nexuses,
522 * as we expect registered non-reservation holding 522 * as we expect registered non-reservation holding
523 * nexuses to issue CDBs. 523 * nexuses to issue CDBs.
524 */ 524 */
525 #if 0 525 #if 0
526 if (!registered_nexus) { 526 if (!registered_nexus) {
527 pr_debug("Allowing implict CDB: 0x%02x" 527 pr_debug("Allowing implict CDB: 0x%02x"
528 " for %s reservation on unregistered" 528 " for %s reservation on unregistered"
529 " nexus\n", cdb[0], 529 " nexus\n", cdb[0],
530 core_scsi3_pr_dump_type(pr_reg_type)); 530 core_scsi3_pr_dump_type(pr_reg_type));
531 } 531 }
532 #endif 532 #endif
533 return 0; 533 return 0;
534 } 534 }
535 } else if ((reg_only) || (all_reg)) { 535 } else if ((reg_only) || (all_reg)) {
536 if (registered_nexus) { 536 if (registered_nexus) {
537 /* 537 /*
538 * For PR_*_REG_ONLY and PR_*_ALL_REG reservations, 538 * For PR_*_REG_ONLY and PR_*_ALL_REG reservations,
539 * allow commands from registered nexuses. 539 * allow commands from registered nexuses.
540 */ 540 */
541 #if 0 541 #if 0
542 pr_debug("Allowing implict CDB: 0x%02x for %s" 542 pr_debug("Allowing implict CDB: 0x%02x for %s"
543 " reservation\n", cdb[0], 543 " reservation\n", cdb[0],
544 core_scsi3_pr_dump_type(pr_reg_type)); 544 core_scsi3_pr_dump_type(pr_reg_type));
545 #endif 545 #endif
546 return 0; 546 return 0;
547 } 547 }
548 } 548 }
549 pr_debug("%s Conflict for %sregistered nexus %s CDB: 0x%2x" 549 pr_debug("%s Conflict for %sregistered nexus %s CDB: 0x%2x"
550 " for %s reservation\n", transport_dump_cmd_direction(cmd), 550 " for %s reservation\n", transport_dump_cmd_direction(cmd),
551 (registered_nexus) ? "" : "un", 551 (registered_nexus) ? "" : "un",
552 se_sess->se_node_acl->initiatorname, cdb[0], 552 se_sess->se_node_acl->initiatorname, cdb[0],
553 core_scsi3_pr_dump_type(pr_reg_type)); 553 core_scsi3_pr_dump_type(pr_reg_type));
554 554
555 return 1; /* Conflict by default */ 555 return 1; /* Conflict by default */
556 } 556 }
557 557
558 static u32 core_scsi3_pr_generation(struct se_device *dev) 558 static u32 core_scsi3_pr_generation(struct se_device *dev)
559 { 559 {
560 struct se_subsystem_dev *su_dev = dev->se_sub_dev; 560 struct se_subsystem_dev *su_dev = dev->se_sub_dev;
561 u32 prg; 561 u32 prg;
562 /* 562 /*
563 * PRGeneration field shall contain the value of a 32-bit wrapping 563 * PRGeneration field shall contain the value of a 32-bit wrapping
564 * counter mainted by the device server. 564 * counter mainted by the device server.
565 * 565 *
566 * Note that this is done regardless of Active Persist across 566 * Note that this is done regardless of Active Persist across
567 * Target PowerLoss (APTPL) 567 * Target PowerLoss (APTPL)
568 * 568 *
569 * See spc4r17 section 6.3.12 READ_KEYS service action 569 * See spc4r17 section 6.3.12 READ_KEYS service action
570 */ 570 */
571 spin_lock(&dev->dev_reservation_lock); 571 spin_lock(&dev->dev_reservation_lock);
572 prg = su_dev->t10_pr.pr_generation++; 572 prg = su_dev->t10_pr.pr_generation++;
573 spin_unlock(&dev->dev_reservation_lock); 573 spin_unlock(&dev->dev_reservation_lock);
574 574
575 return prg; 575 return prg;
576 } 576 }
577 577
578 static int core_scsi3_pr_reservation_check( 578 static int core_scsi3_pr_reservation_check(
579 struct se_cmd *cmd, 579 struct se_cmd *cmd,
580 u32 *pr_reg_type) 580 u32 *pr_reg_type)
581 { 581 {
582 struct se_device *dev = cmd->se_dev; 582 struct se_device *dev = cmd->se_dev;
583 struct se_session *sess = cmd->se_sess; 583 struct se_session *sess = cmd->se_sess;
584 int ret; 584 int ret;
585 585
586 if (!sess) 586 if (!sess)
587 return 0; 587 return 0;
588 /* 588 /*
589 * A legacy SPC-2 reservation is being held. 589 * A legacy SPC-2 reservation is being held.
590 */ 590 */
591 if (dev->dev_flags & DF_SPC2_RESERVATIONS) 591 if (dev->dev_flags & DF_SPC2_RESERVATIONS)
592 return core_scsi2_reservation_check(cmd, pr_reg_type); 592 return core_scsi2_reservation_check(cmd, pr_reg_type);
593 593
594 spin_lock(&dev->dev_reservation_lock); 594 spin_lock(&dev->dev_reservation_lock);
595 if (!dev->dev_pr_res_holder) { 595 if (!dev->dev_pr_res_holder) {
596 spin_unlock(&dev->dev_reservation_lock); 596 spin_unlock(&dev->dev_reservation_lock);
597 return 0; 597 return 0;
598 } 598 }
599 *pr_reg_type = dev->dev_pr_res_holder->pr_res_type; 599 *pr_reg_type = dev->dev_pr_res_holder->pr_res_type;
600 cmd->pr_res_key = dev->dev_pr_res_holder->pr_res_key; 600 cmd->pr_res_key = dev->dev_pr_res_holder->pr_res_key;
601 if (dev->dev_pr_res_holder->pr_reg_nacl != sess->se_node_acl) { 601 if (dev->dev_pr_res_holder->pr_reg_nacl != sess->se_node_acl) {
602 spin_unlock(&dev->dev_reservation_lock); 602 spin_unlock(&dev->dev_reservation_lock);
603 return -EINVAL; 603 return -EINVAL;
604 } 604 }
605 if (!dev->dev_pr_res_holder->isid_present_at_reg) { 605 if (!dev->dev_pr_res_holder->isid_present_at_reg) {
606 spin_unlock(&dev->dev_reservation_lock); 606 spin_unlock(&dev->dev_reservation_lock);
607 return 0; 607 return 0;
608 } 608 }
609 ret = (dev->dev_pr_res_holder->pr_reg_bin_isid == 609 ret = (dev->dev_pr_res_holder->pr_reg_bin_isid ==
610 sess->sess_bin_isid) ? 0 : -EINVAL; 610 sess->sess_bin_isid) ? 0 : -EINVAL;
611 /* 611 /*
612 * Use bit in *pr_reg_type to notify ISID mismatch in 612 * Use bit in *pr_reg_type to notify ISID mismatch in
613 * core_scsi3_pr_seq_non_holder(). 613 * core_scsi3_pr_seq_non_holder().
614 */ 614 */
615 if (ret != 0) 615 if (ret != 0)
616 *pr_reg_type |= 0x80000000; 616 *pr_reg_type |= 0x80000000;
617 spin_unlock(&dev->dev_reservation_lock); 617 spin_unlock(&dev->dev_reservation_lock);
618 618
619 return ret; 619 return ret;
620 } 620 }
621 621
622 static struct t10_pr_registration *__core_scsi3_do_alloc_registration( 622 static struct t10_pr_registration *__core_scsi3_do_alloc_registration(
623 struct se_device *dev, 623 struct se_device *dev,
624 struct se_node_acl *nacl, 624 struct se_node_acl *nacl,
625 struct se_dev_entry *deve, 625 struct se_dev_entry *deve,
626 unsigned char *isid, 626 unsigned char *isid,
627 u64 sa_res_key, 627 u64 sa_res_key,
628 int all_tg_pt, 628 int all_tg_pt,
629 int aptpl) 629 int aptpl)
630 { 630 {
631 struct se_subsystem_dev *su_dev = dev->se_sub_dev; 631 struct se_subsystem_dev *su_dev = dev->se_sub_dev;
632 struct t10_pr_registration *pr_reg; 632 struct t10_pr_registration *pr_reg;
633 633
634 pr_reg = kmem_cache_zalloc(t10_pr_reg_cache, GFP_ATOMIC); 634 pr_reg = kmem_cache_zalloc(t10_pr_reg_cache, GFP_ATOMIC);
635 if (!pr_reg) { 635 if (!pr_reg) {
636 pr_err("Unable to allocate struct t10_pr_registration\n"); 636 pr_err("Unable to allocate struct t10_pr_registration\n");
637 return NULL; 637 return NULL;
638 } 638 }
639 639
640 pr_reg->pr_aptpl_buf = kzalloc(su_dev->t10_pr.pr_aptpl_buf_len, 640 pr_reg->pr_aptpl_buf = kzalloc(su_dev->t10_pr.pr_aptpl_buf_len,
641 GFP_ATOMIC); 641 GFP_ATOMIC);
642 if (!pr_reg->pr_aptpl_buf) { 642 if (!pr_reg->pr_aptpl_buf) {
643 pr_err("Unable to allocate pr_reg->pr_aptpl_buf\n"); 643 pr_err("Unable to allocate pr_reg->pr_aptpl_buf\n");
644 kmem_cache_free(t10_pr_reg_cache, pr_reg); 644 kmem_cache_free(t10_pr_reg_cache, pr_reg);
645 return NULL; 645 return NULL;
646 } 646 }
647 647
648 INIT_LIST_HEAD(&pr_reg->pr_reg_list); 648 INIT_LIST_HEAD(&pr_reg->pr_reg_list);
649 INIT_LIST_HEAD(&pr_reg->pr_reg_abort_list); 649 INIT_LIST_HEAD(&pr_reg->pr_reg_abort_list);
650 INIT_LIST_HEAD(&pr_reg->pr_reg_aptpl_list); 650 INIT_LIST_HEAD(&pr_reg->pr_reg_aptpl_list);
651 INIT_LIST_HEAD(&pr_reg->pr_reg_atp_list); 651 INIT_LIST_HEAD(&pr_reg->pr_reg_atp_list);
652 INIT_LIST_HEAD(&pr_reg->pr_reg_atp_mem_list); 652 INIT_LIST_HEAD(&pr_reg->pr_reg_atp_mem_list);
653 atomic_set(&pr_reg->pr_res_holders, 0); 653 atomic_set(&pr_reg->pr_res_holders, 0);
654 pr_reg->pr_reg_nacl = nacl; 654 pr_reg->pr_reg_nacl = nacl;
655 pr_reg->pr_reg_deve = deve; 655 pr_reg->pr_reg_deve = deve;
656 pr_reg->pr_res_mapped_lun = deve->mapped_lun; 656 pr_reg->pr_res_mapped_lun = deve->mapped_lun;
657 pr_reg->pr_aptpl_target_lun = deve->se_lun->unpacked_lun; 657 pr_reg->pr_aptpl_target_lun = deve->se_lun->unpacked_lun;
658 pr_reg->pr_res_key = sa_res_key; 658 pr_reg->pr_res_key = sa_res_key;
659 pr_reg->pr_reg_all_tg_pt = all_tg_pt; 659 pr_reg->pr_reg_all_tg_pt = all_tg_pt;
660 pr_reg->pr_reg_aptpl = aptpl; 660 pr_reg->pr_reg_aptpl = aptpl;
661 pr_reg->pr_reg_tg_pt_lun = deve->se_lun; 661 pr_reg->pr_reg_tg_pt_lun = deve->se_lun;
662 /* 662 /*
663 * If an ISID value for this SCSI Initiator Port exists, 663 * If an ISID value for this SCSI Initiator Port exists,
664 * save it to the registration now. 664 * save it to the registration now.
665 */ 665 */
666 if (isid != NULL) { 666 if (isid != NULL) {
667 pr_reg->pr_reg_bin_isid = get_unaligned_be64(isid); 667 pr_reg->pr_reg_bin_isid = get_unaligned_be64(isid);
668 snprintf(pr_reg->pr_reg_isid, PR_REG_ISID_LEN, "%s", isid); 668 snprintf(pr_reg->pr_reg_isid, PR_REG_ISID_LEN, "%s", isid);
669 pr_reg->isid_present_at_reg = 1; 669 pr_reg->isid_present_at_reg = 1;
670 } 670 }
671 671
672 return pr_reg; 672 return pr_reg;
673 } 673 }
674 674
675 static int core_scsi3_lunacl_depend_item(struct se_dev_entry *); 675 static int core_scsi3_lunacl_depend_item(struct se_dev_entry *);
676 static void core_scsi3_lunacl_undepend_item(struct se_dev_entry *); 676 static void core_scsi3_lunacl_undepend_item(struct se_dev_entry *);
677 677
678 /* 678 /*
679 * Function used for handling PR registrations for ALL_TG_PT=1 and ALL_TG_PT=0 679 * Function used for handling PR registrations for ALL_TG_PT=1 and ALL_TG_PT=0
680 * modes. 680 * modes.
681 */ 681 */
682 static struct t10_pr_registration *__core_scsi3_alloc_registration( 682 static struct t10_pr_registration *__core_scsi3_alloc_registration(
683 struct se_device *dev, 683 struct se_device *dev,
684 struct se_node_acl *nacl, 684 struct se_node_acl *nacl,
685 struct se_dev_entry *deve, 685 struct se_dev_entry *deve,
686 unsigned char *isid, 686 unsigned char *isid,
687 u64 sa_res_key, 687 u64 sa_res_key,
688 int all_tg_pt, 688 int all_tg_pt,
689 int aptpl) 689 int aptpl)
690 { 690 {
691 struct se_dev_entry *deve_tmp; 691 struct se_dev_entry *deve_tmp;
692 struct se_node_acl *nacl_tmp; 692 struct se_node_acl *nacl_tmp;
693 struct se_port *port, *port_tmp; 693 struct se_port *port, *port_tmp;
694 struct target_core_fabric_ops *tfo = nacl->se_tpg->se_tpg_tfo; 694 struct target_core_fabric_ops *tfo = nacl->se_tpg->se_tpg_tfo;
695 struct t10_pr_registration *pr_reg, *pr_reg_atp, *pr_reg_tmp, *pr_reg_tmp_safe; 695 struct t10_pr_registration *pr_reg, *pr_reg_atp, *pr_reg_tmp, *pr_reg_tmp_safe;
696 int ret; 696 int ret;
697 /* 697 /*
698 * Create a registration for the I_T Nexus upon which the 698 * Create a registration for the I_T Nexus upon which the
699 * PROUT REGISTER was received. 699 * PROUT REGISTER was received.
700 */ 700 */
701 pr_reg = __core_scsi3_do_alloc_registration(dev, nacl, deve, isid, 701 pr_reg = __core_scsi3_do_alloc_registration(dev, nacl, deve, isid,
702 sa_res_key, all_tg_pt, aptpl); 702 sa_res_key, all_tg_pt, aptpl);
703 if (!pr_reg) 703 if (!pr_reg)
704 return NULL; 704 return NULL;
705 /* 705 /*
706 * Return pointer to pr_reg for ALL_TG_PT=0 706 * Return pointer to pr_reg for ALL_TG_PT=0
707 */ 707 */
708 if (!all_tg_pt) 708 if (!all_tg_pt)
709 return pr_reg; 709 return pr_reg;
710 /* 710 /*
711 * Create list of matching SCSI Initiator Port registrations 711 * Create list of matching SCSI Initiator Port registrations
712 * for ALL_TG_PT=1 712 * for ALL_TG_PT=1
713 */ 713 */
714 spin_lock(&dev->se_port_lock); 714 spin_lock(&dev->se_port_lock);
715 list_for_each_entry_safe(port, port_tmp, &dev->dev_sep_list, sep_list) { 715 list_for_each_entry_safe(port, port_tmp, &dev->dev_sep_list, sep_list) {
716 atomic_inc(&port->sep_tg_pt_ref_cnt); 716 atomic_inc(&port->sep_tg_pt_ref_cnt);
717 smp_mb__after_atomic_inc(); 717 smp_mb__after_atomic_inc();
718 spin_unlock(&dev->se_port_lock); 718 spin_unlock(&dev->se_port_lock);
719 719
720 spin_lock_bh(&port->sep_alua_lock); 720 spin_lock_bh(&port->sep_alua_lock);
721 list_for_each_entry(deve_tmp, &port->sep_alua_list, 721 list_for_each_entry(deve_tmp, &port->sep_alua_list,
722 alua_port_list) { 722 alua_port_list) {
723 /* 723 /*
724 * This pointer will be NULL for demo mode MappedLUNs 724 * This pointer will be NULL for demo mode MappedLUNs
725 * that have not been make explict via a ConfigFS 725 * that have not been make explict via a ConfigFS
726 * MappedLUN group for the SCSI Initiator Node ACL. 726 * MappedLUN group for the SCSI Initiator Node ACL.
727 */ 727 */
728 if (!deve_tmp->se_lun_acl) 728 if (!deve_tmp->se_lun_acl)
729 continue; 729 continue;
730 730
731 nacl_tmp = deve_tmp->se_lun_acl->se_lun_nacl; 731 nacl_tmp = deve_tmp->se_lun_acl->se_lun_nacl;
732 /* 732 /*
733 * Skip the matching struct se_node_acl that is allocated 733 * Skip the matching struct se_node_acl that is allocated
734 * above.. 734 * above..
735 */ 735 */
736 if (nacl == nacl_tmp) 736 if (nacl == nacl_tmp)
737 continue; 737 continue;
738 /* 738 /*
739 * Only perform PR registrations for target ports on 739 * Only perform PR registrations for target ports on
740 * the same fabric module as the REGISTER w/ ALL_TG_PT=1 740 * the same fabric module as the REGISTER w/ ALL_TG_PT=1
741 * arrived. 741 * arrived.
742 */ 742 */
743 if (tfo != nacl_tmp->se_tpg->se_tpg_tfo) 743 if (tfo != nacl_tmp->se_tpg->se_tpg_tfo)
744 continue; 744 continue;
745 /* 745 /*
746 * Look for a matching Initiator Node ACL in ASCII format 746 * Look for a matching Initiator Node ACL in ASCII format
747 */ 747 */
748 if (strcmp(nacl->initiatorname, nacl_tmp->initiatorname)) 748 if (strcmp(nacl->initiatorname, nacl_tmp->initiatorname))
749 continue; 749 continue;
750 750
751 atomic_inc(&deve_tmp->pr_ref_count); 751 atomic_inc(&deve_tmp->pr_ref_count);
752 smp_mb__after_atomic_inc(); 752 smp_mb__after_atomic_inc();
753 spin_unlock_bh(&port->sep_alua_lock); 753 spin_unlock_bh(&port->sep_alua_lock);
754 /* 754 /*
755 * Grab a configfs group dependency that is released 755 * Grab a configfs group dependency that is released
756 * for the exception path at label out: below, or upon 756 * for the exception path at label out: below, or upon
757 * completion of adding ALL_TG_PT=1 registrations in 757 * completion of adding ALL_TG_PT=1 registrations in
758 * __core_scsi3_add_registration() 758 * __core_scsi3_add_registration()
759 */ 759 */
760 ret = core_scsi3_lunacl_depend_item(deve_tmp); 760 ret = core_scsi3_lunacl_depend_item(deve_tmp);
761 if (ret < 0) { 761 if (ret < 0) {
762 pr_err("core_scsi3_lunacl_depend" 762 pr_err("core_scsi3_lunacl_depend"
763 "_item() failed\n"); 763 "_item() failed\n");
764 atomic_dec(&port->sep_tg_pt_ref_cnt); 764 atomic_dec(&port->sep_tg_pt_ref_cnt);
765 smp_mb__after_atomic_dec(); 765 smp_mb__after_atomic_dec();
766 atomic_dec(&deve_tmp->pr_ref_count); 766 atomic_dec(&deve_tmp->pr_ref_count);
767 smp_mb__after_atomic_dec(); 767 smp_mb__after_atomic_dec();
768 goto out; 768 goto out;
769 } 769 }
770 /* 770 /*
771 * Located a matching SCSI Initiator Port on a different 771 * Located a matching SCSI Initiator Port on a different
772 * port, allocate the pr_reg_atp and attach it to the 772 * port, allocate the pr_reg_atp and attach it to the
773 * pr_reg->pr_reg_atp_list that will be processed once 773 * pr_reg->pr_reg_atp_list that will be processed once
774 * the original *pr_reg is processed in 774 * the original *pr_reg is processed in
775 * __core_scsi3_add_registration() 775 * __core_scsi3_add_registration()
776 */ 776 */
777 pr_reg_atp = __core_scsi3_do_alloc_registration(dev, 777 pr_reg_atp = __core_scsi3_do_alloc_registration(dev,
778 nacl_tmp, deve_tmp, NULL, 778 nacl_tmp, deve_tmp, NULL,
779 sa_res_key, all_tg_pt, aptpl); 779 sa_res_key, all_tg_pt, aptpl);
780 if (!pr_reg_atp) { 780 if (!pr_reg_atp) {
781 atomic_dec(&port->sep_tg_pt_ref_cnt); 781 atomic_dec(&port->sep_tg_pt_ref_cnt);
782 smp_mb__after_atomic_dec(); 782 smp_mb__after_atomic_dec();
783 atomic_dec(&deve_tmp->pr_ref_count); 783 atomic_dec(&deve_tmp->pr_ref_count);
784 smp_mb__after_atomic_dec(); 784 smp_mb__after_atomic_dec();
785 core_scsi3_lunacl_undepend_item(deve_tmp); 785 core_scsi3_lunacl_undepend_item(deve_tmp);
786 goto out; 786 goto out;
787 } 787 }
788 788
789 list_add_tail(&pr_reg_atp->pr_reg_atp_mem_list, 789 list_add_tail(&pr_reg_atp->pr_reg_atp_mem_list,
790 &pr_reg->pr_reg_atp_list); 790 &pr_reg->pr_reg_atp_list);
791 spin_lock_bh(&port->sep_alua_lock); 791 spin_lock_bh(&port->sep_alua_lock);
792 } 792 }
793 spin_unlock_bh(&port->sep_alua_lock); 793 spin_unlock_bh(&port->sep_alua_lock);
794 794
795 spin_lock(&dev->se_port_lock); 795 spin_lock(&dev->se_port_lock);
796 atomic_dec(&port->sep_tg_pt_ref_cnt); 796 atomic_dec(&port->sep_tg_pt_ref_cnt);
797 smp_mb__after_atomic_dec(); 797 smp_mb__after_atomic_dec();
798 } 798 }
799 spin_unlock(&dev->se_port_lock); 799 spin_unlock(&dev->se_port_lock);
800 800
801 return pr_reg; 801 return pr_reg;
802 out: 802 out:
803 list_for_each_entry_safe(pr_reg_tmp, pr_reg_tmp_safe, 803 list_for_each_entry_safe(pr_reg_tmp, pr_reg_tmp_safe,
804 &pr_reg->pr_reg_atp_list, pr_reg_atp_mem_list) { 804 &pr_reg->pr_reg_atp_list, pr_reg_atp_mem_list) {
805 list_del(&pr_reg_tmp->pr_reg_atp_mem_list); 805 list_del(&pr_reg_tmp->pr_reg_atp_mem_list);
806 core_scsi3_lunacl_undepend_item(pr_reg_tmp->pr_reg_deve); 806 core_scsi3_lunacl_undepend_item(pr_reg_tmp->pr_reg_deve);
807 kmem_cache_free(t10_pr_reg_cache, pr_reg_tmp); 807 kmem_cache_free(t10_pr_reg_cache, pr_reg_tmp);
808 } 808 }
809 kmem_cache_free(t10_pr_reg_cache, pr_reg); 809 kmem_cache_free(t10_pr_reg_cache, pr_reg);
810 return NULL; 810 return NULL;
811 } 811 }
812 812
813 int core_scsi3_alloc_aptpl_registration( 813 int core_scsi3_alloc_aptpl_registration(
814 struct t10_reservation *pr_tmpl, 814 struct t10_reservation *pr_tmpl,
815 u64 sa_res_key, 815 u64 sa_res_key,
816 unsigned char *i_port, 816 unsigned char *i_port,
817 unsigned char *isid, 817 unsigned char *isid,
818 u32 mapped_lun, 818 u32 mapped_lun,
819 unsigned char *t_port, 819 unsigned char *t_port,
820 u16 tpgt, 820 u16 tpgt,
821 u32 target_lun, 821 u32 target_lun,
822 int res_holder, 822 int res_holder,
823 int all_tg_pt, 823 int all_tg_pt,
824 u8 type) 824 u8 type)
825 { 825 {
826 struct t10_pr_registration *pr_reg; 826 struct t10_pr_registration *pr_reg;
827 827
828 if (!i_port || !t_port || !sa_res_key) { 828 if (!i_port || !t_port || !sa_res_key) {
829 pr_err("Illegal parameters for APTPL registration\n"); 829 pr_err("Illegal parameters for APTPL registration\n");
830 return -EINVAL; 830 return -EINVAL;
831 } 831 }
832 832
833 pr_reg = kmem_cache_zalloc(t10_pr_reg_cache, GFP_KERNEL); 833 pr_reg = kmem_cache_zalloc(t10_pr_reg_cache, GFP_KERNEL);
834 if (!pr_reg) { 834 if (!pr_reg) {
835 pr_err("Unable to allocate struct t10_pr_registration\n"); 835 pr_err("Unable to allocate struct t10_pr_registration\n");
836 return -ENOMEM; 836 return -ENOMEM;
837 } 837 }
838 pr_reg->pr_aptpl_buf = kzalloc(pr_tmpl->pr_aptpl_buf_len, GFP_KERNEL); 838 pr_reg->pr_aptpl_buf = kzalloc(pr_tmpl->pr_aptpl_buf_len, GFP_KERNEL);
839 839
840 INIT_LIST_HEAD(&pr_reg->pr_reg_list); 840 INIT_LIST_HEAD(&pr_reg->pr_reg_list);
841 INIT_LIST_HEAD(&pr_reg->pr_reg_abort_list); 841 INIT_LIST_HEAD(&pr_reg->pr_reg_abort_list);
842 INIT_LIST_HEAD(&pr_reg->pr_reg_aptpl_list); 842 INIT_LIST_HEAD(&pr_reg->pr_reg_aptpl_list);
843 INIT_LIST_HEAD(&pr_reg->pr_reg_atp_list); 843 INIT_LIST_HEAD(&pr_reg->pr_reg_atp_list);
844 INIT_LIST_HEAD(&pr_reg->pr_reg_atp_mem_list); 844 INIT_LIST_HEAD(&pr_reg->pr_reg_atp_mem_list);
845 atomic_set(&pr_reg->pr_res_holders, 0); 845 atomic_set(&pr_reg->pr_res_holders, 0);
846 pr_reg->pr_reg_nacl = NULL; 846 pr_reg->pr_reg_nacl = NULL;
847 pr_reg->pr_reg_deve = NULL; 847 pr_reg->pr_reg_deve = NULL;
848 pr_reg->pr_res_mapped_lun = mapped_lun; 848 pr_reg->pr_res_mapped_lun = mapped_lun;
849 pr_reg->pr_aptpl_target_lun = target_lun; 849 pr_reg->pr_aptpl_target_lun = target_lun;
850 pr_reg->pr_res_key = sa_res_key; 850 pr_reg->pr_res_key = sa_res_key;
851 pr_reg->pr_reg_all_tg_pt = all_tg_pt; 851 pr_reg->pr_reg_all_tg_pt = all_tg_pt;
852 pr_reg->pr_reg_aptpl = 1; 852 pr_reg->pr_reg_aptpl = 1;
853 pr_reg->pr_reg_tg_pt_lun = NULL; 853 pr_reg->pr_reg_tg_pt_lun = NULL;
854 pr_reg->pr_res_scope = 0; /* Always LUN_SCOPE */ 854 pr_reg->pr_res_scope = 0; /* Always LUN_SCOPE */
855 pr_reg->pr_res_type = type; 855 pr_reg->pr_res_type = type;
856 /* 856 /*
857 * If an ISID value had been saved in APTPL metadata for this 857 * If an ISID value had been saved in APTPL metadata for this
858 * SCSI Initiator Port, restore it now. 858 * SCSI Initiator Port, restore it now.
859 */ 859 */
860 if (isid != NULL) { 860 if (isid != NULL) {
861 pr_reg->pr_reg_bin_isid = get_unaligned_be64(isid); 861 pr_reg->pr_reg_bin_isid = get_unaligned_be64(isid);
862 snprintf(pr_reg->pr_reg_isid, PR_REG_ISID_LEN, "%s", isid); 862 snprintf(pr_reg->pr_reg_isid, PR_REG_ISID_LEN, "%s", isid);
863 pr_reg->isid_present_at_reg = 1; 863 pr_reg->isid_present_at_reg = 1;
864 } 864 }
865 /* 865 /*
866 * Copy the i_port and t_port information from caller. 866 * Copy the i_port and t_port information from caller.
867 */ 867 */
868 snprintf(pr_reg->pr_iport, PR_APTPL_MAX_IPORT_LEN, "%s", i_port); 868 snprintf(pr_reg->pr_iport, PR_APTPL_MAX_IPORT_LEN, "%s", i_port);
869 snprintf(pr_reg->pr_tport, PR_APTPL_MAX_TPORT_LEN, "%s", t_port); 869 snprintf(pr_reg->pr_tport, PR_APTPL_MAX_TPORT_LEN, "%s", t_port);
870 pr_reg->pr_reg_tpgt = tpgt; 870 pr_reg->pr_reg_tpgt = tpgt;
871 /* 871 /*
872 * Set pr_res_holder from caller, the pr_reg who is the reservation 872 * Set pr_res_holder from caller, the pr_reg who is the reservation
873 * holder will get it's pointer set in core_scsi3_aptpl_reserve() once 873 * holder will get it's pointer set in core_scsi3_aptpl_reserve() once
874 * the Initiator Node LUN ACL from the fabric module is created for 874 * the Initiator Node LUN ACL from the fabric module is created for
875 * this registration. 875 * this registration.
876 */ 876 */
877 pr_reg->pr_res_holder = res_holder; 877 pr_reg->pr_res_holder = res_holder;
878 878
879 list_add_tail(&pr_reg->pr_reg_aptpl_list, &pr_tmpl->aptpl_reg_list); 879 list_add_tail(&pr_reg->pr_reg_aptpl_list, &pr_tmpl->aptpl_reg_list);
880 pr_debug("SPC-3 PR APTPL Successfully added registration%s from" 880 pr_debug("SPC-3 PR APTPL Successfully added registration%s from"
881 " metadata\n", (res_holder) ? "+reservation" : ""); 881 " metadata\n", (res_holder) ? "+reservation" : "");
882 return 0; 882 return 0;
883 } 883 }
884 884
885 static void core_scsi3_aptpl_reserve( 885 static void core_scsi3_aptpl_reserve(
886 struct se_device *dev, 886 struct se_device *dev,
887 struct se_portal_group *tpg, 887 struct se_portal_group *tpg,
888 struct se_node_acl *node_acl, 888 struct se_node_acl *node_acl,
889 struct t10_pr_registration *pr_reg) 889 struct t10_pr_registration *pr_reg)
890 { 890 {
891 char i_buf[PR_REG_ISID_ID_LEN]; 891 char i_buf[PR_REG_ISID_ID_LEN];
892 int prf_isid; 892 int prf_isid;
893 893
894 memset(i_buf, 0, PR_REG_ISID_ID_LEN); 894 memset(i_buf, 0, PR_REG_ISID_ID_LEN);
895 prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0], 895 prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0],
896 PR_REG_ISID_ID_LEN); 896 PR_REG_ISID_ID_LEN);
897 897
898 spin_lock(&dev->dev_reservation_lock); 898 spin_lock(&dev->dev_reservation_lock);
899 dev->dev_pr_res_holder = pr_reg; 899 dev->dev_pr_res_holder = pr_reg;
900 spin_unlock(&dev->dev_reservation_lock); 900 spin_unlock(&dev->dev_reservation_lock);
901 901
902 pr_debug("SPC-3 PR [%s] Service Action: APTPL RESERVE created" 902 pr_debug("SPC-3 PR [%s] Service Action: APTPL RESERVE created"
903 " new reservation holder TYPE: %s ALL_TG_PT: %d\n", 903 " new reservation holder TYPE: %s ALL_TG_PT: %d\n",
904 tpg->se_tpg_tfo->get_fabric_name(), 904 tpg->se_tpg_tfo->get_fabric_name(),
905 core_scsi3_pr_dump_type(pr_reg->pr_res_type), 905 core_scsi3_pr_dump_type(pr_reg->pr_res_type),
906 (pr_reg->pr_reg_all_tg_pt) ? 1 : 0); 906 (pr_reg->pr_reg_all_tg_pt) ? 1 : 0);
907 pr_debug("SPC-3 PR [%s] RESERVE Node: %s%s\n", 907 pr_debug("SPC-3 PR [%s] RESERVE Node: %s%s\n",
908 tpg->se_tpg_tfo->get_fabric_name(), node_acl->initiatorname, 908 tpg->se_tpg_tfo->get_fabric_name(), node_acl->initiatorname,
909 (prf_isid) ? &i_buf[0] : ""); 909 (prf_isid) ? &i_buf[0] : "");
910 } 910 }
911 911
912 static void __core_scsi3_add_registration(struct se_device *, struct se_node_acl *, 912 static void __core_scsi3_add_registration(struct se_device *, struct se_node_acl *,
913 struct t10_pr_registration *, int, int); 913 struct t10_pr_registration *, int, int);
914 914
915 static int __core_scsi3_check_aptpl_registration( 915 static int __core_scsi3_check_aptpl_registration(
916 struct se_device *dev, 916 struct se_device *dev,
917 struct se_portal_group *tpg, 917 struct se_portal_group *tpg,
918 struct se_lun *lun, 918 struct se_lun *lun,
919 u32 target_lun, 919 u32 target_lun,
920 struct se_node_acl *nacl, 920 struct se_node_acl *nacl,
921 struct se_dev_entry *deve) 921 struct se_dev_entry *deve)
922 { 922 {
923 struct t10_pr_registration *pr_reg, *pr_reg_tmp; 923 struct t10_pr_registration *pr_reg, *pr_reg_tmp;
924 struct t10_reservation *pr_tmpl = &dev->se_sub_dev->t10_pr; 924 struct t10_reservation *pr_tmpl = &dev->se_sub_dev->t10_pr;
925 unsigned char i_port[PR_APTPL_MAX_IPORT_LEN]; 925 unsigned char i_port[PR_APTPL_MAX_IPORT_LEN];
926 unsigned char t_port[PR_APTPL_MAX_TPORT_LEN]; 926 unsigned char t_port[PR_APTPL_MAX_TPORT_LEN];
927 u16 tpgt; 927 u16 tpgt;
928 928
929 memset(i_port, 0, PR_APTPL_MAX_IPORT_LEN); 929 memset(i_port, 0, PR_APTPL_MAX_IPORT_LEN);
930 memset(t_port, 0, PR_APTPL_MAX_TPORT_LEN); 930 memset(t_port, 0, PR_APTPL_MAX_TPORT_LEN);
931 /* 931 /*
932 * Copy Initiator Port information from struct se_node_acl 932 * Copy Initiator Port information from struct se_node_acl
933 */ 933 */
934 snprintf(i_port, PR_APTPL_MAX_IPORT_LEN, "%s", nacl->initiatorname); 934 snprintf(i_port, PR_APTPL_MAX_IPORT_LEN, "%s", nacl->initiatorname);
935 snprintf(t_port, PR_APTPL_MAX_TPORT_LEN, "%s", 935 snprintf(t_port, PR_APTPL_MAX_TPORT_LEN, "%s",
936 tpg->se_tpg_tfo->tpg_get_wwn(tpg)); 936 tpg->se_tpg_tfo->tpg_get_wwn(tpg));
937 tpgt = tpg->se_tpg_tfo->tpg_get_tag(tpg); 937 tpgt = tpg->se_tpg_tfo->tpg_get_tag(tpg);
938 /* 938 /*
939 * Look for the matching registrations+reservation from those 939 * Look for the matching registrations+reservation from those
940 * created from APTPL metadata. Note that multiple registrations 940 * created from APTPL metadata. Note that multiple registrations
941 * may exist for fabrics that use ISIDs in their SCSI Initiator Port 941 * may exist for fabrics that use ISIDs in their SCSI Initiator Port
942 * TransportIDs. 942 * TransportIDs.
943 */ 943 */
944 spin_lock(&pr_tmpl->aptpl_reg_lock); 944 spin_lock(&pr_tmpl->aptpl_reg_lock);
945 list_for_each_entry_safe(pr_reg, pr_reg_tmp, &pr_tmpl->aptpl_reg_list, 945 list_for_each_entry_safe(pr_reg, pr_reg_tmp, &pr_tmpl->aptpl_reg_list,
946 pr_reg_aptpl_list) { 946 pr_reg_aptpl_list) {
947 if (!strcmp(pr_reg->pr_iport, i_port) && 947 if (!strcmp(pr_reg->pr_iport, i_port) &&
948 (pr_reg->pr_res_mapped_lun == deve->mapped_lun) && 948 (pr_reg->pr_res_mapped_lun == deve->mapped_lun) &&
949 !(strcmp(pr_reg->pr_tport, t_port)) && 949 !(strcmp(pr_reg->pr_tport, t_port)) &&
950 (pr_reg->pr_reg_tpgt == tpgt) && 950 (pr_reg->pr_reg_tpgt == tpgt) &&
951 (pr_reg->pr_aptpl_target_lun == target_lun)) { 951 (pr_reg->pr_aptpl_target_lun == target_lun)) {
952 952
953 pr_reg->pr_reg_nacl = nacl; 953 pr_reg->pr_reg_nacl = nacl;
954 pr_reg->pr_reg_deve = deve; 954 pr_reg->pr_reg_deve = deve;
955 pr_reg->pr_reg_tg_pt_lun = lun; 955 pr_reg->pr_reg_tg_pt_lun = lun;
956 956
957 list_del(&pr_reg->pr_reg_aptpl_list); 957 list_del(&pr_reg->pr_reg_aptpl_list);
958 spin_unlock(&pr_tmpl->aptpl_reg_lock); 958 spin_unlock(&pr_tmpl->aptpl_reg_lock);
959 /* 959 /*
960 * At this point all of the pointers in *pr_reg will 960 * At this point all of the pointers in *pr_reg will
961 * be setup, so go ahead and add the registration. 961 * be setup, so go ahead and add the registration.
962 */ 962 */
963 963
964 __core_scsi3_add_registration(dev, nacl, pr_reg, 0, 0); 964 __core_scsi3_add_registration(dev, nacl, pr_reg, 0, 0);
965 /* 965 /*
966 * If this registration is the reservation holder, 966 * If this registration is the reservation holder,
967 * make that happen now.. 967 * make that happen now..
968 */ 968 */
969 if (pr_reg->pr_res_holder) 969 if (pr_reg->pr_res_holder)
970 core_scsi3_aptpl_reserve(dev, tpg, 970 core_scsi3_aptpl_reserve(dev, tpg,
971 nacl, pr_reg); 971 nacl, pr_reg);
972 /* 972 /*
973 * Reenable pr_aptpl_active to accept new metadata 973 * Reenable pr_aptpl_active to accept new metadata
974 * updates once the SCSI device is active again.. 974 * updates once the SCSI device is active again..
975 */ 975 */
976 spin_lock(&pr_tmpl->aptpl_reg_lock); 976 spin_lock(&pr_tmpl->aptpl_reg_lock);
977 pr_tmpl->pr_aptpl_active = 1; 977 pr_tmpl->pr_aptpl_active = 1;
978 } 978 }
979 } 979 }
980 spin_unlock(&pr_tmpl->aptpl_reg_lock); 980 spin_unlock(&pr_tmpl->aptpl_reg_lock);
981 981
982 return 0; 982 return 0;
983 } 983 }
984 984
985 int core_scsi3_check_aptpl_registration( 985 int core_scsi3_check_aptpl_registration(
986 struct se_device *dev, 986 struct se_device *dev,
987 struct se_portal_group *tpg, 987 struct se_portal_group *tpg,
988 struct se_lun *lun, 988 struct se_lun *lun,
989 struct se_lun_acl *lun_acl) 989 struct se_lun_acl *lun_acl)
990 { 990 {
991 struct se_subsystem_dev *su_dev = dev->se_sub_dev; 991 struct se_subsystem_dev *su_dev = dev->se_sub_dev;
992 struct se_node_acl *nacl = lun_acl->se_lun_nacl; 992 struct se_node_acl *nacl = lun_acl->se_lun_nacl;
993 struct se_dev_entry *deve = &nacl->device_list[lun_acl->mapped_lun]; 993 struct se_dev_entry *deve = &nacl->device_list[lun_acl->mapped_lun];
994 994
995 if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS) 995 if (su_dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS)
996 return 0; 996 return 0;
997 997
998 return __core_scsi3_check_aptpl_registration(dev, tpg, lun, 998 return __core_scsi3_check_aptpl_registration(dev, tpg, lun,
999 lun->unpacked_lun, nacl, deve); 999 lun->unpacked_lun, nacl, deve);
1000 } 1000 }
1001 1001
1002 static void __core_scsi3_dump_registration( 1002 static void __core_scsi3_dump_registration(
1003 struct target_core_fabric_ops *tfo, 1003 struct target_core_fabric_ops *tfo,
1004 struct se_device *dev, 1004 struct se_device *dev,
1005 struct se_node_acl *nacl, 1005 struct se_node_acl *nacl,
1006 struct t10_pr_registration *pr_reg, 1006 struct t10_pr_registration *pr_reg,
1007 int register_type) 1007 int register_type)
1008 { 1008 {
1009 struct se_portal_group *se_tpg = nacl->se_tpg; 1009 struct se_portal_group *se_tpg = nacl->se_tpg;
1010 char i_buf[PR_REG_ISID_ID_LEN]; 1010 char i_buf[PR_REG_ISID_ID_LEN];
1011 int prf_isid; 1011 int prf_isid;
1012 1012
1013 memset(&i_buf[0], 0, PR_REG_ISID_ID_LEN); 1013 memset(&i_buf[0], 0, PR_REG_ISID_ID_LEN);
1014 prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0], 1014 prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0],
1015 PR_REG_ISID_ID_LEN); 1015 PR_REG_ISID_ID_LEN);
1016 1016
1017 pr_debug("SPC-3 PR [%s] Service Action: REGISTER%s Initiator" 1017 pr_debug("SPC-3 PR [%s] Service Action: REGISTER%s Initiator"
1018 " Node: %s%s\n", tfo->get_fabric_name(), (register_type == 2) ? 1018 " Node: %s%s\n", tfo->get_fabric_name(), (register_type == 2) ?
1019 "_AND_MOVE" : (register_type == 1) ? 1019 "_AND_MOVE" : (register_type == 1) ?
1020 "_AND_IGNORE_EXISTING_KEY" : "", nacl->initiatorname, 1020 "_AND_IGNORE_EXISTING_KEY" : "", nacl->initiatorname,
1021 (prf_isid) ? i_buf : ""); 1021 (prf_isid) ? i_buf : "");
1022 pr_debug("SPC-3 PR [%s] registration on Target Port: %s,0x%04x\n", 1022 pr_debug("SPC-3 PR [%s] registration on Target Port: %s,0x%04x\n",
1023 tfo->get_fabric_name(), tfo->tpg_get_wwn(se_tpg), 1023 tfo->get_fabric_name(), tfo->tpg_get_wwn(se_tpg),
1024 tfo->tpg_get_tag(se_tpg)); 1024 tfo->tpg_get_tag(se_tpg));
1025 pr_debug("SPC-3 PR [%s] for %s TCM Subsystem %s Object Target" 1025 pr_debug("SPC-3 PR [%s] for %s TCM Subsystem %s Object Target"
1026 " Port(s)\n", tfo->get_fabric_name(), 1026 " Port(s)\n", tfo->get_fabric_name(),
1027 (pr_reg->pr_reg_all_tg_pt) ? "ALL" : "SINGLE", 1027 (pr_reg->pr_reg_all_tg_pt) ? "ALL" : "SINGLE",
1028 dev->transport->name); 1028 dev->transport->name);
1029 pr_debug("SPC-3 PR [%s] SA Res Key: 0x%016Lx PRgeneration:" 1029 pr_debug("SPC-3 PR [%s] SA Res Key: 0x%016Lx PRgeneration:"
1030 " 0x%08x APTPL: %d\n", tfo->get_fabric_name(), 1030 " 0x%08x APTPL: %d\n", tfo->get_fabric_name(),
1031 pr_reg->pr_res_key, pr_reg->pr_res_generation, 1031 pr_reg->pr_res_key, pr_reg->pr_res_generation,
1032 pr_reg->pr_reg_aptpl); 1032 pr_reg->pr_reg_aptpl);
1033 } 1033 }
1034 1034
1035 /* 1035 /*
1036 * this function can be called with struct se_device->dev_reservation_lock 1036 * this function can be called with struct se_device->dev_reservation_lock
1037 * when register_move = 1 1037 * when register_move = 1
1038 */ 1038 */
1039 static void __core_scsi3_add_registration( 1039 static void __core_scsi3_add_registration(
1040 struct se_device *dev, 1040 struct se_device *dev,
1041 struct se_node_acl *nacl, 1041 struct se_node_acl *nacl,
1042 struct t10_pr_registration *pr_reg, 1042 struct t10_pr_registration *pr_reg,
1043 int register_type, 1043 int register_type,
1044 int register_move) 1044 int register_move)
1045 { 1045 {
1046 struct se_subsystem_dev *su_dev = dev->se_sub_dev; 1046 struct se_subsystem_dev *su_dev = dev->se_sub_dev;
1047 struct target_core_fabric_ops *tfo = nacl->se_tpg->se_tpg_tfo; 1047 struct target_core_fabric_ops *tfo = nacl->se_tpg->se_tpg_tfo;
1048 struct t10_pr_registration *pr_reg_tmp, *pr_reg_tmp_safe; 1048 struct t10_pr_registration *pr_reg_tmp, *pr_reg_tmp_safe;
1049 struct t10_reservation *pr_tmpl = &dev->se_sub_dev->t10_pr; 1049 struct t10_reservation *pr_tmpl = &dev->se_sub_dev->t10_pr;
1050 1050
1051 /* 1051 /*
1052 * Increment PRgeneration counter for struct se_device upon a successful 1052 * Increment PRgeneration counter for struct se_device upon a successful
1053 * REGISTER, see spc4r17 section 6.3.2 READ_KEYS service action 1053 * REGISTER, see spc4r17 section 6.3.2 READ_KEYS service action
1054 * 1054 *
1055 * Also, when register_move = 1 for PROUT REGISTER_AND_MOVE service 1055 * Also, when register_move = 1 for PROUT REGISTER_AND_MOVE service
1056 * action, the struct se_device->dev_reservation_lock will already be held, 1056 * action, the struct se_device->dev_reservation_lock will already be held,
1057 * so we do not call core_scsi3_pr_generation() which grabs the lock 1057 * so we do not call core_scsi3_pr_generation() which grabs the lock
1058 * for the REGISTER. 1058 * for the REGISTER.
1059 */ 1059 */
1060 pr_reg->pr_res_generation = (register_move) ? 1060 pr_reg->pr_res_generation = (register_move) ?
1061 su_dev->t10_pr.pr_generation++ : 1061 su_dev->t10_pr.pr_generation++ :
1062 core_scsi3_pr_generation(dev); 1062 core_scsi3_pr_generation(dev);
1063 1063
1064 spin_lock(&pr_tmpl->registration_lock); 1064 spin_lock(&pr_tmpl->registration_lock);
1065 list_add_tail(&pr_reg->pr_reg_list, &pr_tmpl->registration_list); 1065 list_add_tail(&pr_reg->pr_reg_list, &pr_tmpl->registration_list);
1066 pr_reg->pr_reg_deve->def_pr_registered = 1; 1066 pr_reg->pr_reg_deve->def_pr_registered = 1;
1067 1067
1068 __core_scsi3_dump_registration(tfo, dev, nacl, pr_reg, register_type); 1068 __core_scsi3_dump_registration(tfo, dev, nacl, pr_reg, register_type);
1069 spin_unlock(&pr_tmpl->registration_lock); 1069 spin_unlock(&pr_tmpl->registration_lock);
1070 /* 1070 /*
1071 * Skip extra processing for ALL_TG_PT=0 or REGISTER_AND_MOVE. 1071 * Skip extra processing for ALL_TG_PT=0 or REGISTER_AND_MOVE.
1072 */ 1072 */
1073 if (!pr_reg->pr_reg_all_tg_pt || register_move) 1073 if (!pr_reg->pr_reg_all_tg_pt || register_move)
1074 return; 1074 return;
1075 /* 1075 /*
1076 * Walk pr_reg->pr_reg_atp_list and add registrations for ALL_TG_PT=1 1076 * Walk pr_reg->pr_reg_atp_list and add registrations for ALL_TG_PT=1
1077 * allocated in __core_scsi3_alloc_registration() 1077 * allocated in __core_scsi3_alloc_registration()
1078 */ 1078 */
1079 list_for_each_entry_safe(pr_reg_tmp, pr_reg_tmp_safe, 1079 list_for_each_entry_safe(pr_reg_tmp, pr_reg_tmp_safe,
1080 &pr_reg->pr_reg_atp_list, pr_reg_atp_mem_list) { 1080 &pr_reg->pr_reg_atp_list, pr_reg_atp_mem_list) {
1081 list_del(&pr_reg_tmp->pr_reg_atp_mem_list); 1081 list_del(&pr_reg_tmp->pr_reg_atp_mem_list);
1082 1082
1083 pr_reg_tmp->pr_res_generation = core_scsi3_pr_generation(dev); 1083 pr_reg_tmp->pr_res_generation = core_scsi3_pr_generation(dev);
1084 1084
1085 spin_lock(&pr_tmpl->registration_lock); 1085 spin_lock(&pr_tmpl->registration_lock);
1086 list_add_tail(&pr_reg_tmp->pr_reg_list, 1086 list_add_tail(&pr_reg_tmp->pr_reg_list,
1087 &pr_tmpl->registration_list); 1087 &pr_tmpl->registration_list);
1088 pr_reg_tmp->pr_reg_deve->def_pr_registered = 1; 1088 pr_reg_tmp->pr_reg_deve->def_pr_registered = 1;
1089 1089
1090 __core_scsi3_dump_registration(tfo, dev, 1090 __core_scsi3_dump_registration(tfo, dev,
1091 pr_reg_tmp->pr_reg_nacl, pr_reg_tmp, 1091 pr_reg_tmp->pr_reg_nacl, pr_reg_tmp,
1092 register_type); 1092 register_type);
1093 spin_unlock(&pr_tmpl->registration_lock); 1093 spin_unlock(&pr_tmpl->registration_lock);
1094 /* 1094 /*
1095 * Drop configfs group dependency reference from 1095 * Drop configfs group dependency reference from
1096 * __core_scsi3_alloc_registration() 1096 * __core_scsi3_alloc_registration()
1097 */ 1097 */
1098 core_scsi3_lunacl_undepend_item(pr_reg_tmp->pr_reg_deve); 1098 core_scsi3_lunacl_undepend_item(pr_reg_tmp->pr_reg_deve);
1099 } 1099 }
1100 } 1100 }
1101 1101
1102 static int core_scsi3_alloc_registration( 1102 static int core_scsi3_alloc_registration(
1103 struct se_device *dev, 1103 struct se_device *dev,
1104 struct se_node_acl *nacl, 1104 struct se_node_acl *nacl,
1105 struct se_dev_entry *deve, 1105 struct se_dev_entry *deve,
1106 unsigned char *isid, 1106 unsigned char *isid,
1107 u64 sa_res_key, 1107 u64 sa_res_key,
1108 int all_tg_pt, 1108 int all_tg_pt,
1109 int aptpl, 1109 int aptpl,
1110 int register_type, 1110 int register_type,
1111 int register_move) 1111 int register_move)
1112 { 1112 {
1113 struct t10_pr_registration *pr_reg; 1113 struct t10_pr_registration *pr_reg;
1114 1114
1115 pr_reg = __core_scsi3_alloc_registration(dev, nacl, deve, isid, 1115 pr_reg = __core_scsi3_alloc_registration(dev, nacl, deve, isid,
1116 sa_res_key, all_tg_pt, aptpl); 1116 sa_res_key, all_tg_pt, aptpl);
1117 if (!pr_reg) 1117 if (!pr_reg)
1118 return -EPERM; 1118 return -EPERM;
1119 1119
1120 __core_scsi3_add_registration(dev, nacl, pr_reg, 1120 __core_scsi3_add_registration(dev, nacl, pr_reg,
1121 register_type, register_move); 1121 register_type, register_move);
1122 return 0; 1122 return 0;
1123 } 1123 }
1124 1124
1125 static struct t10_pr_registration *__core_scsi3_locate_pr_reg( 1125 static struct t10_pr_registration *__core_scsi3_locate_pr_reg(
1126 struct se_device *dev, 1126 struct se_device *dev,
1127 struct se_node_acl *nacl, 1127 struct se_node_acl *nacl,
1128 unsigned char *isid) 1128 unsigned char *isid)
1129 { 1129 {
1130 struct t10_reservation *pr_tmpl = &dev->se_sub_dev->t10_pr; 1130 struct t10_reservation *pr_tmpl = &dev->se_sub_dev->t10_pr;
1131 struct t10_pr_registration *pr_reg, *pr_reg_tmp; 1131 struct t10_pr_registration *pr_reg, *pr_reg_tmp;
1132 struct se_portal_group *tpg; 1132 struct se_portal_group *tpg;
1133 1133
1134 spin_lock(&pr_tmpl->registration_lock); 1134 spin_lock(&pr_tmpl->registration_lock);
1135 list_for_each_entry_safe(pr_reg, pr_reg_tmp, 1135 list_for_each_entry_safe(pr_reg, pr_reg_tmp,
1136 &pr_tmpl->registration_list, pr_reg_list) { 1136 &pr_tmpl->registration_list, pr_reg_list) {
1137 /* 1137 /*
1138 * First look for a matching struct se_node_acl 1138 * First look for a matching struct se_node_acl
1139 */ 1139 */
1140 if (pr_reg->pr_reg_nacl != nacl) 1140 if (pr_reg->pr_reg_nacl != nacl)
1141 continue; 1141 continue;
1142 1142
1143 tpg = pr_reg->pr_reg_nacl->se_tpg; 1143 tpg = pr_reg->pr_reg_nacl->se_tpg;
1144 /* 1144 /*
1145 * If this registration does NOT contain a fabric provided 1145 * If this registration does NOT contain a fabric provided
1146 * ISID, then we have found a match. 1146 * ISID, then we have found a match.
1147 */ 1147 */
1148 if (!pr_reg->isid_present_at_reg) { 1148 if (!pr_reg->isid_present_at_reg) {
1149 /* 1149 /*
1150 * Determine if this SCSI device server requires that 1150 * Determine if this SCSI device server requires that
1151 * SCSI Intiatior TransportID w/ ISIDs is enforced 1151 * SCSI Intiatior TransportID w/ ISIDs is enforced
1152 * for fabric modules (iSCSI) requiring them. 1152 * for fabric modules (iSCSI) requiring them.
1153 */ 1153 */
1154 if (tpg->se_tpg_tfo->sess_get_initiator_sid != NULL) { 1154 if (tpg->se_tpg_tfo->sess_get_initiator_sid != NULL) {
1155 if (dev->se_sub_dev->se_dev_attrib.enforce_pr_isids) 1155 if (dev->se_sub_dev->se_dev_attrib.enforce_pr_isids)
1156 continue; 1156 continue;
1157 } 1157 }
1158 atomic_inc(&pr_reg->pr_res_holders); 1158 atomic_inc(&pr_reg->pr_res_holders);
1159 smp_mb__after_atomic_inc(); 1159 smp_mb__after_atomic_inc();
1160 spin_unlock(&pr_tmpl->registration_lock); 1160 spin_unlock(&pr_tmpl->registration_lock);
1161 return pr_reg; 1161 return pr_reg;
1162 } 1162 }
1163 /* 1163 /*
1164 * If the *pr_reg contains a fabric defined ISID for multi-value 1164 * If the *pr_reg contains a fabric defined ISID for multi-value
1165 * SCSI Initiator Port TransportIDs, then we expect a valid 1165 * SCSI Initiator Port TransportIDs, then we expect a valid
1166 * matching ISID to be provided by the local SCSI Initiator Port. 1166 * matching ISID to be provided by the local SCSI Initiator Port.
1167 */ 1167 */
1168 if (!isid) 1168 if (!isid)
1169 continue; 1169 continue;
1170 if (strcmp(isid, pr_reg->pr_reg_isid)) 1170 if (strcmp(isid, pr_reg->pr_reg_isid))
1171 continue; 1171 continue;
1172 1172
1173 atomic_inc(&pr_reg->pr_res_holders); 1173 atomic_inc(&pr_reg->pr_res_holders);
1174 smp_mb__after_atomic_inc(); 1174 smp_mb__after_atomic_inc();
1175 spin_unlock(&pr_tmpl->registration_lock); 1175 spin_unlock(&pr_tmpl->registration_lock);
1176 return pr_reg; 1176 return pr_reg;
1177 } 1177 }
1178 spin_unlock(&pr_tmpl->registration_lock); 1178 spin_unlock(&pr_tmpl->registration_lock);
1179 1179
1180 return NULL; 1180 return NULL;
1181 } 1181 }
1182 1182
1183 static struct t10_pr_registration *core_scsi3_locate_pr_reg( 1183 static struct t10_pr_registration *core_scsi3_locate_pr_reg(
1184 struct se_device *dev, 1184 struct se_device *dev,
1185 struct se_node_acl *nacl, 1185 struct se_node_acl *nacl,
1186 struct se_session *sess) 1186 struct se_session *sess)
1187 { 1187 {
1188 struct se_portal_group *tpg = nacl->se_tpg; 1188 struct se_portal_group *tpg = nacl->se_tpg;
1189 unsigned char buf[PR_REG_ISID_LEN], *isid_ptr = NULL; 1189 unsigned char buf[PR_REG_ISID_LEN], *isid_ptr = NULL;
1190 1190
1191 if (tpg->se_tpg_tfo->sess_get_initiator_sid != NULL) { 1191 if (tpg->se_tpg_tfo->sess_get_initiator_sid != NULL) {
1192 memset(&buf[0], 0, PR_REG_ISID_LEN); 1192 memset(&buf[0], 0, PR_REG_ISID_LEN);
1193 tpg->se_tpg_tfo->sess_get_initiator_sid(sess, &buf[0], 1193 tpg->se_tpg_tfo->sess_get_initiator_sid(sess, &buf[0],
1194 PR_REG_ISID_LEN); 1194 PR_REG_ISID_LEN);
1195 isid_ptr = &buf[0]; 1195 isid_ptr = &buf[0];
1196 } 1196 }
1197 1197
1198 return __core_scsi3_locate_pr_reg(dev, nacl, isid_ptr); 1198 return __core_scsi3_locate_pr_reg(dev, nacl, isid_ptr);
1199 } 1199 }
1200 1200
1201 static void core_scsi3_put_pr_reg(struct t10_pr_registration *pr_reg) 1201 static void core_scsi3_put_pr_reg(struct t10_pr_registration *pr_reg)
1202 { 1202 {
1203 atomic_dec(&pr_reg->pr_res_holders); 1203 atomic_dec(&pr_reg->pr_res_holders);
1204 smp_mb__after_atomic_dec(); 1204 smp_mb__after_atomic_dec();
1205 } 1205 }
1206 1206
1207 static int core_scsi3_check_implict_release( 1207 static int core_scsi3_check_implict_release(
1208 struct se_device *dev, 1208 struct se_device *dev,
1209 struct t10_pr_registration *pr_reg) 1209 struct t10_pr_registration *pr_reg)
1210 { 1210 {
1211 struct se_node_acl *nacl = pr_reg->pr_reg_nacl; 1211 struct se_node_acl *nacl = pr_reg->pr_reg_nacl;
1212 struct t10_pr_registration *pr_res_holder; 1212 struct t10_pr_registration *pr_res_holder;
1213 int ret = 0; 1213 int ret = 0;
1214 1214
1215 spin_lock(&dev->dev_reservation_lock); 1215 spin_lock(&dev->dev_reservation_lock);
1216 pr_res_holder = dev->dev_pr_res_holder; 1216 pr_res_holder = dev->dev_pr_res_holder;
1217 if (!pr_res_holder) { 1217 if (!pr_res_holder) {
1218 spin_unlock(&dev->dev_reservation_lock); 1218 spin_unlock(&dev->dev_reservation_lock);
1219 return ret; 1219 return ret;
1220 } 1220 }
1221 if (pr_res_holder == pr_reg) { 1221 if (pr_res_holder == pr_reg) {
1222 /* 1222 /*
1223 * Perform an implict RELEASE if the registration that 1223 * Perform an implict RELEASE if the registration that
1224 * is being released is holding the reservation. 1224 * is being released is holding the reservation.
1225 * 1225 *
1226 * From spc4r17, section 5.7.11.1: 1226 * From spc4r17, section 5.7.11.1:
1227 * 1227 *
1228 * e) If the I_T nexus is the persistent reservation holder 1228 * e) If the I_T nexus is the persistent reservation holder
1229 * and the persistent reservation is not an all registrants 1229 * and the persistent reservation is not an all registrants
1230 * type, then a PERSISTENT RESERVE OUT command with REGISTER 1230 * type, then a PERSISTENT RESERVE OUT command with REGISTER
1231 * service action or REGISTER AND IGNORE EXISTING KEY 1231 * service action or REGISTER AND IGNORE EXISTING KEY
1232 * service action with the SERVICE ACTION RESERVATION KEY 1232 * service action with the SERVICE ACTION RESERVATION KEY
1233 * field set to zero (see 5.7.11.3). 1233 * field set to zero (see 5.7.11.3).
1234 */ 1234 */
1235 __core_scsi3_complete_pro_release(dev, nacl, pr_reg, 0); 1235 __core_scsi3_complete_pro_release(dev, nacl, pr_reg, 0);
1236 ret = 1; 1236 ret = 1;
1237 /* 1237 /*
1238 * For 'All Registrants' reservation types, all existing 1238 * For 'All Registrants' reservation types, all existing
1239 * registrations are still processed as reservation holders 1239 * registrations are still processed as reservation holders
1240 * in core_scsi3_pr_seq_non_holder() after the initial 1240 * in core_scsi3_pr_seq_non_holder() after the initial
1241 * reservation holder is implictly released here. 1241 * reservation holder is implictly released here.
1242 */ 1242 */
1243 } else if (pr_reg->pr_reg_all_tg_pt && 1243 } else if (pr_reg->pr_reg_all_tg_pt &&
1244 (!strcmp(pr_res_holder->pr_reg_nacl->initiatorname, 1244 (!strcmp(pr_res_holder->pr_reg_nacl->initiatorname,
1245 pr_reg->pr_reg_nacl->initiatorname)) && 1245 pr_reg->pr_reg_nacl->initiatorname)) &&
1246 (pr_res_holder->pr_res_key == pr_reg->pr_res_key)) { 1246 (pr_res_holder->pr_res_key == pr_reg->pr_res_key)) {
1247 pr_err("SPC-3 PR: Unable to perform ALL_TG_PT=1" 1247 pr_err("SPC-3 PR: Unable to perform ALL_TG_PT=1"
1248 " UNREGISTER while existing reservation with matching" 1248 " UNREGISTER while existing reservation with matching"
1249 " key 0x%016Lx is present from another SCSI Initiator" 1249 " key 0x%016Lx is present from another SCSI Initiator"
1250 " Port\n", pr_reg->pr_res_key); 1250 " Port\n", pr_reg->pr_res_key);
1251 ret = -EPERM; 1251 ret = -EPERM;
1252 } 1252 }
1253 spin_unlock(&dev->dev_reservation_lock); 1253 spin_unlock(&dev->dev_reservation_lock);
1254 1254
1255 return ret; 1255 return ret;
1256 } 1256 }
1257 1257
1258 /* 1258 /*
1259 * Called with struct t10_reservation->registration_lock held. 1259 * Called with struct t10_reservation->registration_lock held.
1260 */ 1260 */
1261 static void __core_scsi3_free_registration( 1261 static void __core_scsi3_free_registration(
1262 struct se_device *dev, 1262 struct se_device *dev,
1263 struct t10_pr_registration *pr_reg, 1263 struct t10_pr_registration *pr_reg,
1264 struct list_head *preempt_and_abort_list, 1264 struct list_head *preempt_and_abort_list,
1265 int dec_holders) 1265 int dec_holders)
1266 { 1266 {
1267 struct target_core_fabric_ops *tfo = 1267 struct target_core_fabric_ops *tfo =
1268 pr_reg->pr_reg_nacl->se_tpg->se_tpg_tfo; 1268 pr_reg->pr_reg_nacl->se_tpg->se_tpg_tfo;
1269 struct t10_reservation *pr_tmpl = &dev->se_sub_dev->t10_pr; 1269 struct t10_reservation *pr_tmpl = &dev->se_sub_dev->t10_pr;
1270 char i_buf[PR_REG_ISID_ID_LEN]; 1270 char i_buf[PR_REG_ISID_ID_LEN];
1271 int prf_isid; 1271 int prf_isid;
1272 1272
1273 memset(i_buf, 0, PR_REG_ISID_ID_LEN); 1273 memset(i_buf, 0, PR_REG_ISID_ID_LEN);
1274 prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0], 1274 prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0],
1275 PR_REG_ISID_ID_LEN); 1275 PR_REG_ISID_ID_LEN);
1276 1276
1277 pr_reg->pr_reg_deve->def_pr_registered = 0; 1277 pr_reg->pr_reg_deve->def_pr_registered = 0;
1278 pr_reg->pr_reg_deve->pr_res_key = 0; 1278 pr_reg->pr_reg_deve->pr_res_key = 0;
1279 list_del(&pr_reg->pr_reg_list); 1279 list_del(&pr_reg->pr_reg_list);
1280 /* 1280 /*
1281 * Caller accessing *pr_reg using core_scsi3_locate_pr_reg(), 1281 * Caller accessing *pr_reg using core_scsi3_locate_pr_reg(),
1282 * so call core_scsi3_put_pr_reg() to decrement our reference. 1282 * so call core_scsi3_put_pr_reg() to decrement our reference.
1283 */ 1283 */
1284 if (dec_holders) 1284 if (dec_holders)
1285 core_scsi3_put_pr_reg(pr_reg); 1285 core_scsi3_put_pr_reg(pr_reg);
1286 /* 1286 /*
1287 * Wait until all reference from any other I_T nexuses for this 1287 * Wait until all reference from any other I_T nexuses for this
1288 * *pr_reg have been released. Because list_del() is called above, 1288 * *pr_reg have been released. Because list_del() is called above,
1289 * the last core_scsi3_put_pr_reg(pr_reg) will release this reference 1289 * the last core_scsi3_put_pr_reg(pr_reg) will release this reference
1290 * count back to zero, and we release *pr_reg. 1290 * count back to zero, and we release *pr_reg.
1291 */ 1291 */
1292 while (atomic_read(&pr_reg->pr_res_holders) != 0) { 1292 while (atomic_read(&pr_reg->pr_res_holders) != 0) {
1293 spin_unlock(&pr_tmpl->registration_lock); 1293 spin_unlock(&pr_tmpl->registration_lock);
1294 pr_debug("SPC-3 PR [%s] waiting for pr_res_holders\n", 1294 pr_debug("SPC-3 PR [%s] waiting for pr_res_holders\n",
1295 tfo->get_fabric_name()); 1295 tfo->get_fabric_name());
1296 cpu_relax(); 1296 cpu_relax();
1297 spin_lock(&pr_tmpl->registration_lock); 1297 spin_lock(&pr_tmpl->registration_lock);
1298 } 1298 }
1299 1299
1300 pr_debug("SPC-3 PR [%s] Service Action: UNREGISTER Initiator" 1300 pr_debug("SPC-3 PR [%s] Service Action: UNREGISTER Initiator"
1301 " Node: %s%s\n", tfo->get_fabric_name(), 1301 " Node: %s%s\n", tfo->get_fabric_name(),
1302 pr_reg->pr_reg_nacl->initiatorname, 1302 pr_reg->pr_reg_nacl->initiatorname,
1303 (prf_isid) ? &i_buf[0] : ""); 1303 (prf_isid) ? &i_buf[0] : "");
1304 pr_debug("SPC-3 PR [%s] for %s TCM Subsystem %s Object Target" 1304 pr_debug("SPC-3 PR [%s] for %s TCM Subsystem %s Object Target"
1305 " Port(s)\n", tfo->get_fabric_name(), 1305 " Port(s)\n", tfo->get_fabric_name(),
1306 (pr_reg->pr_reg_all_tg_pt) ? "ALL" : "SINGLE", 1306 (pr_reg->pr_reg_all_tg_pt) ? "ALL" : "SINGLE",
1307 dev->transport->name); 1307 dev->transport->name);
1308 pr_debug("SPC-3 PR [%s] SA Res Key: 0x%016Lx PRgeneration:" 1308 pr_debug("SPC-3 PR [%s] SA Res Key: 0x%016Lx PRgeneration:"
1309 " 0x%08x\n", tfo->get_fabric_name(), pr_reg->pr_res_key, 1309 " 0x%08x\n", tfo->get_fabric_name(), pr_reg->pr_res_key,
1310 pr_reg->pr_res_generation); 1310 pr_reg->pr_res_generation);
1311 1311
1312 if (!preempt_and_abort_list) { 1312 if (!preempt_and_abort_list) {
1313 pr_reg->pr_reg_deve = NULL; 1313 pr_reg->pr_reg_deve = NULL;
1314 pr_reg->pr_reg_nacl = NULL; 1314 pr_reg->pr_reg_nacl = NULL;
1315 kfree(pr_reg->pr_aptpl_buf); 1315 kfree(pr_reg->pr_aptpl_buf);
1316 kmem_cache_free(t10_pr_reg_cache, pr_reg); 1316 kmem_cache_free(t10_pr_reg_cache, pr_reg);
1317 return; 1317 return;
1318 } 1318 }
1319 /* 1319 /*
1320 * For PREEMPT_AND_ABORT, the list of *pr_reg in preempt_and_abort_list 1320 * For PREEMPT_AND_ABORT, the list of *pr_reg in preempt_and_abort_list
1321 * are released once the ABORT_TASK_SET has completed.. 1321 * are released once the ABORT_TASK_SET has completed..
1322 */ 1322 */
1323 list_add_tail(&pr_reg->pr_reg_abort_list, preempt_and_abort_list); 1323 list_add_tail(&pr_reg->pr_reg_abort_list, preempt_and_abort_list);
1324 } 1324 }
1325 1325
1326 void core_scsi3_free_pr_reg_from_nacl( 1326 void core_scsi3_free_pr_reg_from_nacl(
1327 struct se_device *dev, 1327 struct se_device *dev,
1328 struct se_node_acl *nacl) 1328 struct se_node_acl *nacl)
1329 { 1329 {
1330 struct t10_reservation *pr_tmpl = &dev->se_sub_dev->t10_pr; 1330 struct t10_reservation *pr_tmpl = &dev->se_sub_dev->t10_pr;
1331 struct t10_pr_registration *pr_reg, *pr_reg_tmp, *pr_res_holder; 1331 struct t10_pr_registration *pr_reg, *pr_reg_tmp, *pr_res_holder;
1332 /* 1332 /*
1333 * If the passed se_node_acl matches the reservation holder, 1333 * If the passed se_node_acl matches the reservation holder,
1334 * release the reservation. 1334 * release the reservation.
1335 */ 1335 */
1336 spin_lock(&dev->dev_reservation_lock); 1336 spin_lock(&dev->dev_reservation_lock);
1337 pr_res_holder = dev->dev_pr_res_holder; 1337 pr_res_holder = dev->dev_pr_res_holder;
1338 if ((pr_res_holder != NULL) && 1338 if ((pr_res_holder != NULL) &&
1339 (pr_res_holder->pr_reg_nacl == nacl)) 1339 (pr_res_holder->pr_reg_nacl == nacl))
1340 __core_scsi3_complete_pro_release(dev, nacl, pr_res_holder, 0); 1340 __core_scsi3_complete_pro_release(dev, nacl, pr_res_holder, 0);
1341 spin_unlock(&dev->dev_reservation_lock); 1341 spin_unlock(&dev->dev_reservation_lock);
1342 /* 1342 /*
1343 * Release any registration associated with the struct se_node_acl. 1343 * Release any registration associated with the struct se_node_acl.
1344 */ 1344 */
1345 spin_lock(&pr_tmpl->registration_lock); 1345 spin_lock(&pr_tmpl->registration_lock);
1346 list_for_each_entry_safe(pr_reg, pr_reg_tmp, 1346 list_for_each_entry_safe(pr_reg, pr_reg_tmp,
1347 &pr_tmpl->registration_list, pr_reg_list) { 1347 &pr_tmpl->registration_list, pr_reg_list) {
1348 1348
1349 if (pr_reg->pr_reg_nacl != nacl) 1349 if (pr_reg->pr_reg_nacl != nacl)
1350 continue; 1350 continue;
1351 1351
1352 __core_scsi3_free_registration(dev, pr_reg, NULL, 0); 1352 __core_scsi3_free_registration(dev, pr_reg, NULL, 0);
1353 } 1353 }
1354 spin_unlock(&pr_tmpl->registration_lock); 1354 spin_unlock(&pr_tmpl->registration_lock);
1355 } 1355 }
1356 1356
1357 void core_scsi3_free_all_registrations( 1357 void core_scsi3_free_all_registrations(
1358 struct se_device *dev) 1358 struct se_device *dev)
1359 { 1359 {
1360 struct t10_reservation *pr_tmpl = &dev->se_sub_dev->t10_pr; 1360 struct t10_reservation *pr_tmpl = &dev->se_sub_dev->t10_pr;
1361 struct t10_pr_registration *pr_reg, *pr_reg_tmp, *pr_res_holder; 1361 struct t10_pr_registration *pr_reg, *pr_reg_tmp, *pr_res_holder;
1362 1362
1363 spin_lock(&dev->dev_reservation_lock); 1363 spin_lock(&dev->dev_reservation_lock);
1364 pr_res_holder = dev->dev_pr_res_holder; 1364 pr_res_holder = dev->dev_pr_res_holder;
1365 if (pr_res_holder != NULL) { 1365 if (pr_res_holder != NULL) {
1366 struct se_node_acl *pr_res_nacl = pr_res_holder->pr_reg_nacl; 1366 struct se_node_acl *pr_res_nacl = pr_res_holder->pr_reg_nacl;
1367 __core_scsi3_complete_pro_release(dev, pr_res_nacl, 1367 __core_scsi3_complete_pro_release(dev, pr_res_nacl,
1368 pr_res_holder, 0); 1368 pr_res_holder, 0);
1369 } 1369 }
1370 spin_unlock(&dev->dev_reservation_lock); 1370 spin_unlock(&dev->dev_reservation_lock);
1371 1371
1372 spin_lock(&pr_tmpl->registration_lock); 1372 spin_lock(&pr_tmpl->registration_lock);
1373 list_for_each_entry_safe(pr_reg, pr_reg_tmp, 1373 list_for_each_entry_safe(pr_reg, pr_reg_tmp,
1374 &pr_tmpl->registration_list, pr_reg_list) { 1374 &pr_tmpl->registration_list, pr_reg_list) {
1375 1375
1376 __core_scsi3_free_registration(dev, pr_reg, NULL, 0); 1376 __core_scsi3_free_registration(dev, pr_reg, NULL, 0);
1377 } 1377 }
1378 spin_unlock(&pr_tmpl->registration_lock); 1378 spin_unlock(&pr_tmpl->registration_lock);
1379 1379
1380 spin_lock(&pr_tmpl->aptpl_reg_lock); 1380 spin_lock(&pr_tmpl->aptpl_reg_lock);
1381 list_for_each_entry_safe(pr_reg, pr_reg_tmp, &pr_tmpl->aptpl_reg_list, 1381 list_for_each_entry_safe(pr_reg, pr_reg_tmp, &pr_tmpl->aptpl_reg_list,
1382 pr_reg_aptpl_list) { 1382 pr_reg_aptpl_list) {
1383 list_del(&pr_reg->pr_reg_aptpl_list); 1383 list_del(&pr_reg->pr_reg_aptpl_list);
1384 kfree(pr_reg->pr_aptpl_buf); 1384 kfree(pr_reg->pr_aptpl_buf);
1385 kmem_cache_free(t10_pr_reg_cache, pr_reg); 1385 kmem_cache_free(t10_pr_reg_cache, pr_reg);
1386 } 1386 }
1387 spin_unlock(&pr_tmpl->aptpl_reg_lock); 1387 spin_unlock(&pr_tmpl->aptpl_reg_lock);
1388 } 1388 }
1389 1389
1390 static int core_scsi3_tpg_depend_item(struct se_portal_group *tpg) 1390 static int core_scsi3_tpg_depend_item(struct se_portal_group *tpg)
1391 { 1391 {
1392 return configfs_depend_item(tpg->se_tpg_tfo->tf_subsys, 1392 return configfs_depend_item(tpg->se_tpg_tfo->tf_subsys,
1393 &tpg->tpg_group.cg_item); 1393 &tpg->tpg_group.cg_item);
1394 } 1394 }
1395 1395
1396 static void core_scsi3_tpg_undepend_item(struct se_portal_group *tpg) 1396 static void core_scsi3_tpg_undepend_item(struct se_portal_group *tpg)
1397 { 1397 {
1398 configfs_undepend_item(tpg->se_tpg_tfo->tf_subsys, 1398 configfs_undepend_item(tpg->se_tpg_tfo->tf_subsys,
1399 &tpg->tpg_group.cg_item); 1399 &tpg->tpg_group.cg_item);
1400 1400
1401 atomic_dec(&tpg->tpg_pr_ref_count); 1401 atomic_dec(&tpg->tpg_pr_ref_count);
1402 smp_mb__after_atomic_dec(); 1402 smp_mb__after_atomic_dec();
1403 } 1403 }
1404 1404
1405 static int core_scsi3_nodeacl_depend_item(struct se_node_acl *nacl) 1405 static int core_scsi3_nodeacl_depend_item(struct se_node_acl *nacl)
1406 { 1406 {
1407 struct se_portal_group *tpg = nacl->se_tpg; 1407 struct se_portal_group *tpg = nacl->se_tpg;
1408 1408
1409 if (nacl->dynamic_node_acl) 1409 if (nacl->dynamic_node_acl)
1410 return 0; 1410 return 0;
1411 1411
1412 return configfs_depend_item(tpg->se_tpg_tfo->tf_subsys, 1412 return configfs_depend_item(tpg->se_tpg_tfo->tf_subsys,
1413 &nacl->acl_group.cg_item); 1413 &nacl->acl_group.cg_item);
1414 } 1414 }
1415 1415
1416 static void core_scsi3_nodeacl_undepend_item(struct se_node_acl *nacl) 1416 static void core_scsi3_nodeacl_undepend_item(struct se_node_acl *nacl)
1417 { 1417 {
1418 struct se_portal_group *tpg = nacl->se_tpg; 1418 struct se_portal_group *tpg = nacl->se_tpg;
1419 1419
1420 if (nacl->dynamic_node_acl) { 1420 if (nacl->dynamic_node_acl) {
1421 atomic_dec(&nacl->acl_pr_ref_count); 1421 atomic_dec(&nacl->acl_pr_ref_count);
1422 smp_mb__after_atomic_dec(); 1422 smp_mb__after_atomic_dec();
1423 return; 1423 return;
1424 } 1424 }
1425 1425
1426 configfs_undepend_item(tpg->se_tpg_tfo->tf_subsys, 1426 configfs_undepend_item(tpg->se_tpg_tfo->tf_subsys,
1427 &nacl->acl_group.cg_item); 1427 &nacl->acl_group.cg_item);
1428 1428
1429 atomic_dec(&nacl->acl_pr_ref_count); 1429 atomic_dec(&nacl->acl_pr_ref_count);
1430 smp_mb__after_atomic_dec(); 1430 smp_mb__after_atomic_dec();
1431 } 1431 }
1432 1432
1433 static int core_scsi3_lunacl_depend_item(struct se_dev_entry *se_deve) 1433 static int core_scsi3_lunacl_depend_item(struct se_dev_entry *se_deve)
1434 { 1434 {
1435 struct se_lun_acl *lun_acl = se_deve->se_lun_acl; 1435 struct se_lun_acl *lun_acl = se_deve->se_lun_acl;
1436 struct se_node_acl *nacl; 1436 struct se_node_acl *nacl;
1437 struct se_portal_group *tpg; 1437 struct se_portal_group *tpg;
1438 /* 1438 /*
1439 * For nacl->dynamic_node_acl=1 1439 * For nacl->dynamic_node_acl=1
1440 */ 1440 */
1441 if (!lun_acl) 1441 if (!lun_acl)
1442 return 0; 1442 return 0;
1443 1443
1444 nacl = lun_acl->se_lun_nacl; 1444 nacl = lun_acl->se_lun_nacl;
1445 tpg = nacl->se_tpg; 1445 tpg = nacl->se_tpg;
1446 1446
1447 return configfs_depend_item(tpg->se_tpg_tfo->tf_subsys, 1447 return configfs_depend_item(tpg->se_tpg_tfo->tf_subsys,
1448 &lun_acl->se_lun_group.cg_item); 1448 &lun_acl->se_lun_group.cg_item);
1449 } 1449 }
1450 1450
1451 static void core_scsi3_lunacl_undepend_item(struct se_dev_entry *se_deve) 1451 static void core_scsi3_lunacl_undepend_item(struct se_dev_entry *se_deve)
1452 { 1452 {
1453 struct se_lun_acl *lun_acl = se_deve->se_lun_acl; 1453 struct se_lun_acl *lun_acl = se_deve->se_lun_acl;
1454 struct se_node_acl *nacl; 1454 struct se_node_acl *nacl;
1455 struct se_portal_group *tpg; 1455 struct se_portal_group *tpg;
1456 /* 1456 /*
1457 * For nacl->dynamic_node_acl=1 1457 * For nacl->dynamic_node_acl=1
1458 */ 1458 */
1459 if (!lun_acl) { 1459 if (!lun_acl) {
1460 atomic_dec(&se_deve->pr_ref_count); 1460 atomic_dec(&se_deve->pr_ref_count);
1461 smp_mb__after_atomic_dec(); 1461 smp_mb__after_atomic_dec();
1462 return; 1462 return;
1463 } 1463 }
1464 nacl = lun_acl->se_lun_nacl; 1464 nacl = lun_acl->se_lun_nacl;
1465 tpg = nacl->se_tpg; 1465 tpg = nacl->se_tpg;
1466 1466
1467 configfs_undepend_item(tpg->se_tpg_tfo->tf_subsys, 1467 configfs_undepend_item(tpg->se_tpg_tfo->tf_subsys,
1468 &lun_acl->se_lun_group.cg_item); 1468 &lun_acl->se_lun_group.cg_item);
1469 1469
1470 atomic_dec(&se_deve->pr_ref_count); 1470 atomic_dec(&se_deve->pr_ref_count);
1471 smp_mb__after_atomic_dec(); 1471 smp_mb__after_atomic_dec();
1472 } 1472 }
1473 1473
1474 static int core_scsi3_decode_spec_i_port( 1474 static int core_scsi3_decode_spec_i_port(
1475 struct se_cmd *cmd, 1475 struct se_cmd *cmd,
1476 struct se_portal_group *tpg, 1476 struct se_portal_group *tpg,
1477 unsigned char *l_isid, 1477 unsigned char *l_isid,
1478 u64 sa_res_key, 1478 u64 sa_res_key,
1479 int all_tg_pt, 1479 int all_tg_pt,
1480 int aptpl) 1480 int aptpl)
1481 { 1481 {
1482 struct se_device *dev = cmd->se_dev; 1482 struct se_device *dev = cmd->se_dev;
1483 struct se_port *tmp_port; 1483 struct se_port *tmp_port;
1484 struct se_portal_group *dest_tpg = NULL, *tmp_tpg; 1484 struct se_portal_group *dest_tpg = NULL, *tmp_tpg;
1485 struct se_session *se_sess = cmd->se_sess; 1485 struct se_session *se_sess = cmd->se_sess;
1486 struct se_node_acl *dest_node_acl = NULL; 1486 struct se_node_acl *dest_node_acl = NULL;
1487 struct se_dev_entry *dest_se_deve = NULL, *local_se_deve; 1487 struct se_dev_entry *dest_se_deve = NULL, *local_se_deve;
1488 struct t10_pr_registration *dest_pr_reg, *local_pr_reg, *pr_reg_e; 1488 struct t10_pr_registration *dest_pr_reg, *local_pr_reg, *pr_reg_e;
1489 struct t10_pr_registration *pr_reg_tmp, *pr_reg_tmp_safe; 1489 struct t10_pr_registration *pr_reg_tmp, *pr_reg_tmp_safe;
1490 struct list_head tid_dest_list; 1490 LIST_HEAD(tid_dest_list);
1491 struct pr_transport_id_holder *tidh_new, *tidh, *tidh_tmp; 1491 struct pr_transport_id_holder *tidh_new, *tidh, *tidh_tmp;
1492 struct target_core_fabric_ops *tmp_tf_ops; 1492 struct target_core_fabric_ops *tmp_tf_ops;
1493 unsigned char *buf; 1493 unsigned char *buf;
1494 unsigned char *ptr, *i_str = NULL, proto_ident, tmp_proto_ident; 1494 unsigned char *ptr, *i_str = NULL, proto_ident, tmp_proto_ident;
1495 char *iport_ptr = NULL, dest_iport[64], i_buf[PR_REG_ISID_ID_LEN]; 1495 char *iport_ptr = NULL, dest_iport[64], i_buf[PR_REG_ISID_ID_LEN];
1496 u32 tpdl, tid_len = 0; 1496 u32 tpdl, tid_len = 0;
1497 int ret, dest_local_nexus, prf_isid; 1497 int ret, dest_local_nexus, prf_isid;
1498 u32 dest_rtpi = 0; 1498 u32 dest_rtpi = 0;
1499 1499
1500 memset(dest_iport, 0, 64); 1500 memset(dest_iport, 0, 64);
1501 INIT_LIST_HEAD(&tid_dest_list);
1502 1501
1503 local_se_deve = &se_sess->se_node_acl->device_list[cmd->orig_fe_lun]; 1502 local_se_deve = &se_sess->se_node_acl->device_list[cmd->orig_fe_lun];
1504 /* 1503 /*
1505 * Allocate a struct pr_transport_id_holder and setup the 1504 * Allocate a struct pr_transport_id_holder and setup the
1506 * local_node_acl and local_se_deve pointers and add to 1505 * local_node_acl and local_se_deve pointers and add to
1507 * struct list_head tid_dest_list for add registration 1506 * struct list_head tid_dest_list for add registration
1508 * processing in the loop of tid_dest_list below. 1507 * processing in the loop of tid_dest_list below.
1509 */ 1508 */
1510 tidh_new = kzalloc(sizeof(struct pr_transport_id_holder), GFP_KERNEL); 1509 tidh_new = kzalloc(sizeof(struct pr_transport_id_holder), GFP_KERNEL);
1511 if (!tidh_new) { 1510 if (!tidh_new) {
1512 pr_err("Unable to allocate tidh_new\n"); 1511 pr_err("Unable to allocate tidh_new\n");
1513 cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; 1512 cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
1514 return -EINVAL; 1513 return -EINVAL;
1515 } 1514 }
1516 INIT_LIST_HEAD(&tidh_new->dest_list); 1515 INIT_LIST_HEAD(&tidh_new->dest_list);
1517 tidh_new->dest_tpg = tpg; 1516 tidh_new->dest_tpg = tpg;
1518 tidh_new->dest_node_acl = se_sess->se_node_acl; 1517 tidh_new->dest_node_acl = se_sess->se_node_acl;
1519 tidh_new->dest_se_deve = local_se_deve; 1518 tidh_new->dest_se_deve = local_se_deve;
1520 1519
1521 local_pr_reg = __core_scsi3_alloc_registration(cmd->se_dev, 1520 local_pr_reg = __core_scsi3_alloc_registration(cmd->se_dev,
1522 se_sess->se_node_acl, local_se_deve, l_isid, 1521 se_sess->se_node_acl, local_se_deve, l_isid,
1523 sa_res_key, all_tg_pt, aptpl); 1522 sa_res_key, all_tg_pt, aptpl);
1524 if (!local_pr_reg) { 1523 if (!local_pr_reg) {
1525 kfree(tidh_new); 1524 kfree(tidh_new);
1526 cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; 1525 cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
1527 return -ENOMEM; 1526 return -ENOMEM;
1528 } 1527 }
1529 tidh_new->dest_pr_reg = local_pr_reg; 1528 tidh_new->dest_pr_reg = local_pr_reg;
1530 /* 1529 /*
1531 * The local I_T nexus does not hold any configfs dependances, 1530 * The local I_T nexus does not hold any configfs dependances,
1532 * so we set tid_h->dest_local_nexus=1 to prevent the 1531 * so we set tid_h->dest_local_nexus=1 to prevent the
1533 * configfs_undepend_item() calls in the tid_dest_list loops below. 1532 * configfs_undepend_item() calls in the tid_dest_list loops below.
1534 */ 1533 */
1535 tidh_new->dest_local_nexus = 1; 1534 tidh_new->dest_local_nexus = 1;
1536 list_add_tail(&tidh_new->dest_list, &tid_dest_list); 1535 list_add_tail(&tidh_new->dest_list, &tid_dest_list);
1537 1536
1538 buf = transport_kmap_data_sg(cmd); 1537 buf = transport_kmap_data_sg(cmd);
1539 /* 1538 /*
1540 * For a PERSISTENT RESERVE OUT specify initiator ports payload, 1539 * For a PERSISTENT RESERVE OUT specify initiator ports payload,
1541 * first extract TransportID Parameter Data Length, and make sure 1540 * first extract TransportID Parameter Data Length, and make sure
1542 * the value matches up to the SCSI expected data transfer length. 1541 * the value matches up to the SCSI expected data transfer length.
1543 */ 1542 */
1544 tpdl = (buf[24] & 0xff) << 24; 1543 tpdl = (buf[24] & 0xff) << 24;
1545 tpdl |= (buf[25] & 0xff) << 16; 1544 tpdl |= (buf[25] & 0xff) << 16;
1546 tpdl |= (buf[26] & 0xff) << 8; 1545 tpdl |= (buf[26] & 0xff) << 8;
1547 tpdl |= buf[27] & 0xff; 1546 tpdl |= buf[27] & 0xff;
1548 1547
1549 if ((tpdl + 28) != cmd->data_length) { 1548 if ((tpdl + 28) != cmd->data_length) {
1550 pr_err("SPC-3 PR: Illegal tpdl: %u + 28 byte header" 1549 pr_err("SPC-3 PR: Illegal tpdl: %u + 28 byte header"
1551 " does not equal CDB data_length: %u\n", tpdl, 1550 " does not equal CDB data_length: %u\n", tpdl,
1552 cmd->data_length); 1551 cmd->data_length);
1553 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST; 1552 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST;
1554 ret = -EINVAL; 1553 ret = -EINVAL;
1555 goto out; 1554 goto out;
1556 } 1555 }
1557 /* 1556 /*
1558 * Start processing the received transport IDs using the 1557 * Start processing the received transport IDs using the
1559 * receiving I_T Nexus portal's fabric dependent methods to 1558 * receiving I_T Nexus portal's fabric dependent methods to
1560 * obtain the SCSI Initiator Port/Device Identifiers. 1559 * obtain the SCSI Initiator Port/Device Identifiers.
1561 */ 1560 */
1562 ptr = &buf[28]; 1561 ptr = &buf[28];
1563 1562
1564 while (tpdl > 0) { 1563 while (tpdl > 0) {
1565 proto_ident = (ptr[0] & 0x0f); 1564 proto_ident = (ptr[0] & 0x0f);
1566 dest_tpg = NULL; 1565 dest_tpg = NULL;
1567 1566
1568 spin_lock(&dev->se_port_lock); 1567 spin_lock(&dev->se_port_lock);
1569 list_for_each_entry(tmp_port, &dev->dev_sep_list, sep_list) { 1568 list_for_each_entry(tmp_port, &dev->dev_sep_list, sep_list) {
1570 tmp_tpg = tmp_port->sep_tpg; 1569 tmp_tpg = tmp_port->sep_tpg;
1571 if (!tmp_tpg) 1570 if (!tmp_tpg)
1572 continue; 1571 continue;
1573 tmp_tf_ops = tmp_tpg->se_tpg_tfo; 1572 tmp_tf_ops = tmp_tpg->se_tpg_tfo;
1574 if (!tmp_tf_ops) 1573 if (!tmp_tf_ops)
1575 continue; 1574 continue;
1576 if (!tmp_tf_ops->get_fabric_proto_ident || 1575 if (!tmp_tf_ops->get_fabric_proto_ident ||
1577 !tmp_tf_ops->tpg_parse_pr_out_transport_id) 1576 !tmp_tf_ops->tpg_parse_pr_out_transport_id)
1578 continue; 1577 continue;
1579 /* 1578 /*
1580 * Look for the matching proto_ident provided by 1579 * Look for the matching proto_ident provided by
1581 * the received TransportID 1580 * the received TransportID
1582 */ 1581 */
1583 tmp_proto_ident = tmp_tf_ops->get_fabric_proto_ident(tmp_tpg); 1582 tmp_proto_ident = tmp_tf_ops->get_fabric_proto_ident(tmp_tpg);
1584 if (tmp_proto_ident != proto_ident) 1583 if (tmp_proto_ident != proto_ident)
1585 continue; 1584 continue;
1586 dest_rtpi = tmp_port->sep_rtpi; 1585 dest_rtpi = tmp_port->sep_rtpi;
1587 1586
1588 i_str = tmp_tf_ops->tpg_parse_pr_out_transport_id( 1587 i_str = tmp_tf_ops->tpg_parse_pr_out_transport_id(
1589 tmp_tpg, (const char *)ptr, &tid_len, 1588 tmp_tpg, (const char *)ptr, &tid_len,
1590 &iport_ptr); 1589 &iport_ptr);
1591 if (!i_str) 1590 if (!i_str)
1592 continue; 1591 continue;
1593 1592
1594 atomic_inc(&tmp_tpg->tpg_pr_ref_count); 1593 atomic_inc(&tmp_tpg->tpg_pr_ref_count);
1595 smp_mb__after_atomic_inc(); 1594 smp_mb__after_atomic_inc();
1596 spin_unlock(&dev->se_port_lock); 1595 spin_unlock(&dev->se_port_lock);
1597 1596
1598 ret = core_scsi3_tpg_depend_item(tmp_tpg); 1597 ret = core_scsi3_tpg_depend_item(tmp_tpg);
1599 if (ret != 0) { 1598 if (ret != 0) {
1600 pr_err(" core_scsi3_tpg_depend_item()" 1599 pr_err(" core_scsi3_tpg_depend_item()"
1601 " for tmp_tpg\n"); 1600 " for tmp_tpg\n");
1602 atomic_dec(&tmp_tpg->tpg_pr_ref_count); 1601 atomic_dec(&tmp_tpg->tpg_pr_ref_count);
1603 smp_mb__after_atomic_dec(); 1602 smp_mb__after_atomic_dec();
1604 cmd->scsi_sense_reason = 1603 cmd->scsi_sense_reason =
1605 TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; 1604 TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
1606 ret = -EINVAL; 1605 ret = -EINVAL;
1607 goto out; 1606 goto out;
1608 } 1607 }
1609 /* 1608 /*
1610 * Locate the desination initiator ACL to be registered 1609 * Locate the desination initiator ACL to be registered
1611 * from the decoded fabric module specific TransportID 1610 * from the decoded fabric module specific TransportID
1612 * at *i_str. 1611 * at *i_str.
1613 */ 1612 */
1614 spin_lock_irq(&tmp_tpg->acl_node_lock); 1613 spin_lock_irq(&tmp_tpg->acl_node_lock);
1615 dest_node_acl = __core_tpg_get_initiator_node_acl( 1614 dest_node_acl = __core_tpg_get_initiator_node_acl(
1616 tmp_tpg, i_str); 1615 tmp_tpg, i_str);
1617 if (dest_node_acl) { 1616 if (dest_node_acl) {
1618 atomic_inc(&dest_node_acl->acl_pr_ref_count); 1617 atomic_inc(&dest_node_acl->acl_pr_ref_count);
1619 smp_mb__after_atomic_inc(); 1618 smp_mb__after_atomic_inc();
1620 } 1619 }
1621 spin_unlock_irq(&tmp_tpg->acl_node_lock); 1620 spin_unlock_irq(&tmp_tpg->acl_node_lock);
1622 1621
1623 if (!dest_node_acl) { 1622 if (!dest_node_acl) {
1624 core_scsi3_tpg_undepend_item(tmp_tpg); 1623 core_scsi3_tpg_undepend_item(tmp_tpg);
1625 spin_lock(&dev->se_port_lock); 1624 spin_lock(&dev->se_port_lock);
1626 continue; 1625 continue;
1627 } 1626 }
1628 1627
1629 ret = core_scsi3_nodeacl_depend_item(dest_node_acl); 1628 ret = core_scsi3_nodeacl_depend_item(dest_node_acl);
1630 if (ret != 0) { 1629 if (ret != 0) {
1631 pr_err("configfs_depend_item() failed" 1630 pr_err("configfs_depend_item() failed"
1632 " for dest_node_acl->acl_group\n"); 1631 " for dest_node_acl->acl_group\n");
1633 atomic_dec(&dest_node_acl->acl_pr_ref_count); 1632 atomic_dec(&dest_node_acl->acl_pr_ref_count);
1634 smp_mb__after_atomic_dec(); 1633 smp_mb__after_atomic_dec();
1635 core_scsi3_tpg_undepend_item(tmp_tpg); 1634 core_scsi3_tpg_undepend_item(tmp_tpg);
1636 cmd->scsi_sense_reason = 1635 cmd->scsi_sense_reason =
1637 TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; 1636 TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
1638 ret = -EINVAL; 1637 ret = -EINVAL;
1639 goto out; 1638 goto out;
1640 } 1639 }
1641 1640
1642 dest_tpg = tmp_tpg; 1641 dest_tpg = tmp_tpg;
1643 pr_debug("SPC-3 PR SPEC_I_PT: Located %s Node:" 1642 pr_debug("SPC-3 PR SPEC_I_PT: Located %s Node:"
1644 " %s Port RTPI: %hu\n", 1643 " %s Port RTPI: %hu\n",
1645 dest_tpg->se_tpg_tfo->get_fabric_name(), 1644 dest_tpg->se_tpg_tfo->get_fabric_name(),
1646 dest_node_acl->initiatorname, dest_rtpi); 1645 dest_node_acl->initiatorname, dest_rtpi);
1647 1646
1648 spin_lock(&dev->se_port_lock); 1647 spin_lock(&dev->se_port_lock);
1649 break; 1648 break;
1650 } 1649 }
1651 spin_unlock(&dev->se_port_lock); 1650 spin_unlock(&dev->se_port_lock);
1652 1651
1653 if (!dest_tpg) { 1652 if (!dest_tpg) {
1654 pr_err("SPC-3 PR SPEC_I_PT: Unable to locate" 1653 pr_err("SPC-3 PR SPEC_I_PT: Unable to locate"
1655 " dest_tpg\n"); 1654 " dest_tpg\n");
1656 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST; 1655 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST;
1657 ret = -EINVAL; 1656 ret = -EINVAL;
1658 goto out; 1657 goto out;
1659 } 1658 }
1660 #if 0 1659 #if 0
1661 pr_debug("SPC-3 PR SPEC_I_PT: Got %s data_length: %u tpdl: %u" 1660 pr_debug("SPC-3 PR SPEC_I_PT: Got %s data_length: %u tpdl: %u"
1662 " tid_len: %d for %s + %s\n", 1661 " tid_len: %d for %s + %s\n",
1663 dest_tpg->se_tpg_tfo->get_fabric_name(), cmd->data_length, 1662 dest_tpg->se_tpg_tfo->get_fabric_name(), cmd->data_length,
1664 tpdl, tid_len, i_str, iport_ptr); 1663 tpdl, tid_len, i_str, iport_ptr);
1665 #endif 1664 #endif
1666 if (tid_len > tpdl) { 1665 if (tid_len > tpdl) {
1667 pr_err("SPC-3 PR SPEC_I_PT: Illegal tid_len:" 1666 pr_err("SPC-3 PR SPEC_I_PT: Illegal tid_len:"
1668 " %u for Transport ID: %s\n", tid_len, ptr); 1667 " %u for Transport ID: %s\n", tid_len, ptr);
1669 core_scsi3_nodeacl_undepend_item(dest_node_acl); 1668 core_scsi3_nodeacl_undepend_item(dest_node_acl);
1670 core_scsi3_tpg_undepend_item(dest_tpg); 1669 core_scsi3_tpg_undepend_item(dest_tpg);
1671 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST; 1670 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST;
1672 ret = -EINVAL; 1671 ret = -EINVAL;
1673 goto out; 1672 goto out;
1674 } 1673 }
1675 /* 1674 /*
1676 * Locate the desintation struct se_dev_entry pointer for matching 1675 * Locate the desintation struct se_dev_entry pointer for matching
1677 * RELATIVE TARGET PORT IDENTIFIER on the receiving I_T Nexus 1676 * RELATIVE TARGET PORT IDENTIFIER on the receiving I_T Nexus
1678 * Target Port. 1677 * Target Port.
1679 */ 1678 */
1680 dest_se_deve = core_get_se_deve_from_rtpi(dest_node_acl, 1679 dest_se_deve = core_get_se_deve_from_rtpi(dest_node_acl,
1681 dest_rtpi); 1680 dest_rtpi);
1682 if (!dest_se_deve) { 1681 if (!dest_se_deve) {
1683 pr_err("Unable to locate %s dest_se_deve" 1682 pr_err("Unable to locate %s dest_se_deve"
1684 " from destination RTPI: %hu\n", 1683 " from destination RTPI: %hu\n",
1685 dest_tpg->se_tpg_tfo->get_fabric_name(), 1684 dest_tpg->se_tpg_tfo->get_fabric_name(),
1686 dest_rtpi); 1685 dest_rtpi);
1687 1686
1688 core_scsi3_nodeacl_undepend_item(dest_node_acl); 1687 core_scsi3_nodeacl_undepend_item(dest_node_acl);
1689 core_scsi3_tpg_undepend_item(dest_tpg); 1688 core_scsi3_tpg_undepend_item(dest_tpg);
1690 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST; 1689 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST;
1691 ret = -EINVAL; 1690 ret = -EINVAL;
1692 goto out; 1691 goto out;
1693 } 1692 }
1694 1693
1695 ret = core_scsi3_lunacl_depend_item(dest_se_deve); 1694 ret = core_scsi3_lunacl_depend_item(dest_se_deve);
1696 if (ret < 0) { 1695 if (ret < 0) {
1697 pr_err("core_scsi3_lunacl_depend_item()" 1696 pr_err("core_scsi3_lunacl_depend_item()"
1698 " failed\n"); 1697 " failed\n");
1699 atomic_dec(&dest_se_deve->pr_ref_count); 1698 atomic_dec(&dest_se_deve->pr_ref_count);
1700 smp_mb__after_atomic_dec(); 1699 smp_mb__after_atomic_dec();
1701 core_scsi3_nodeacl_undepend_item(dest_node_acl); 1700 core_scsi3_nodeacl_undepend_item(dest_node_acl);
1702 core_scsi3_tpg_undepend_item(dest_tpg); 1701 core_scsi3_tpg_undepend_item(dest_tpg);
1703 cmd->scsi_sense_reason = 1702 cmd->scsi_sense_reason =
1704 TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; 1703 TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
1705 ret = -EINVAL; 1704 ret = -EINVAL;
1706 goto out; 1705 goto out;
1707 } 1706 }
1708 #if 0 1707 #if 0
1709 pr_debug("SPC-3 PR SPEC_I_PT: Located %s Node: %s" 1708 pr_debug("SPC-3 PR SPEC_I_PT: Located %s Node: %s"
1710 " dest_se_deve mapped_lun: %u\n", 1709 " dest_se_deve mapped_lun: %u\n",
1711 dest_tpg->se_tpg_tfo->get_fabric_name(), 1710 dest_tpg->se_tpg_tfo->get_fabric_name(),
1712 dest_node_acl->initiatorname, dest_se_deve->mapped_lun); 1711 dest_node_acl->initiatorname, dest_se_deve->mapped_lun);
1713 #endif 1712 #endif
1714 /* 1713 /*
1715 * Skip any TransportIDs that already have a registration for 1714 * Skip any TransportIDs that already have a registration for
1716 * this target port. 1715 * this target port.
1717 */ 1716 */
1718 pr_reg_e = __core_scsi3_locate_pr_reg(dev, dest_node_acl, 1717 pr_reg_e = __core_scsi3_locate_pr_reg(dev, dest_node_acl,
1719 iport_ptr); 1718 iport_ptr);
1720 if (pr_reg_e) { 1719 if (pr_reg_e) {
1721 core_scsi3_put_pr_reg(pr_reg_e); 1720 core_scsi3_put_pr_reg(pr_reg_e);
1722 core_scsi3_lunacl_undepend_item(dest_se_deve); 1721 core_scsi3_lunacl_undepend_item(dest_se_deve);
1723 core_scsi3_nodeacl_undepend_item(dest_node_acl); 1722 core_scsi3_nodeacl_undepend_item(dest_node_acl);
1724 core_scsi3_tpg_undepend_item(dest_tpg); 1723 core_scsi3_tpg_undepend_item(dest_tpg);
1725 ptr += tid_len; 1724 ptr += tid_len;
1726 tpdl -= tid_len; 1725 tpdl -= tid_len;
1727 tid_len = 0; 1726 tid_len = 0;
1728 continue; 1727 continue;
1729 } 1728 }
1730 /* 1729 /*
1731 * Allocate a struct pr_transport_id_holder and setup 1730 * Allocate a struct pr_transport_id_holder and setup
1732 * the dest_node_acl and dest_se_deve pointers for the 1731 * the dest_node_acl and dest_se_deve pointers for the
1733 * loop below. 1732 * loop below.
1734 */ 1733 */
1735 tidh_new = kzalloc(sizeof(struct pr_transport_id_holder), 1734 tidh_new = kzalloc(sizeof(struct pr_transport_id_holder),
1736 GFP_KERNEL); 1735 GFP_KERNEL);
1737 if (!tidh_new) { 1736 if (!tidh_new) {
1738 pr_err("Unable to allocate tidh_new\n"); 1737 pr_err("Unable to allocate tidh_new\n");
1739 core_scsi3_lunacl_undepend_item(dest_se_deve); 1738 core_scsi3_lunacl_undepend_item(dest_se_deve);
1740 core_scsi3_nodeacl_undepend_item(dest_node_acl); 1739 core_scsi3_nodeacl_undepend_item(dest_node_acl);
1741 core_scsi3_tpg_undepend_item(dest_tpg); 1740 core_scsi3_tpg_undepend_item(dest_tpg);
1742 cmd->scsi_sense_reason = 1741 cmd->scsi_sense_reason =
1743 TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; 1742 TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
1744 ret = -ENOMEM; 1743 ret = -ENOMEM;
1745 goto out; 1744 goto out;
1746 } 1745 }
1747 INIT_LIST_HEAD(&tidh_new->dest_list); 1746 INIT_LIST_HEAD(&tidh_new->dest_list);
1748 tidh_new->dest_tpg = dest_tpg; 1747 tidh_new->dest_tpg = dest_tpg;
1749 tidh_new->dest_node_acl = dest_node_acl; 1748 tidh_new->dest_node_acl = dest_node_acl;
1750 tidh_new->dest_se_deve = dest_se_deve; 1749 tidh_new->dest_se_deve = dest_se_deve;
1751 1750
1752 /* 1751 /*
1753 * Allocate, but do NOT add the registration for the 1752 * Allocate, but do NOT add the registration for the
1754 * TransportID referenced SCSI Initiator port. This 1753 * TransportID referenced SCSI Initiator port. This
1755 * done because of the following from spc4r17 in section 1754 * done because of the following from spc4r17 in section
1756 * 6.14.3 wrt SPEC_I_PT: 1755 * 6.14.3 wrt SPEC_I_PT:
1757 * 1756 *
1758 * "If a registration fails for any initiator port (e.g., if th 1757 * "If a registration fails for any initiator port (e.g., if th
1759 * logical unit does not have enough resources available to 1758 * logical unit does not have enough resources available to
1760 * hold the registration information), no registrations shall be 1759 * hold the registration information), no registrations shall be
1761 * made, and the command shall be terminated with 1760 * made, and the command shall be terminated with
1762 * CHECK CONDITION status." 1761 * CHECK CONDITION status."
1763 * 1762 *
1764 * That means we call __core_scsi3_alloc_registration() here, 1763 * That means we call __core_scsi3_alloc_registration() here,
1765 * and then call __core_scsi3_add_registration() in the 1764 * and then call __core_scsi3_add_registration() in the
1766 * 2nd loop which will never fail. 1765 * 2nd loop which will never fail.
1767 */ 1766 */
1768 dest_pr_reg = __core_scsi3_alloc_registration(cmd->se_dev, 1767 dest_pr_reg = __core_scsi3_alloc_registration(cmd->se_dev,
1769 dest_node_acl, dest_se_deve, iport_ptr, 1768 dest_node_acl, dest_se_deve, iport_ptr,
1770 sa_res_key, all_tg_pt, aptpl); 1769 sa_res_key, all_tg_pt, aptpl);
1771 if (!dest_pr_reg) { 1770 if (!dest_pr_reg) {
1772 core_scsi3_lunacl_undepend_item(dest_se_deve); 1771 core_scsi3_lunacl_undepend_item(dest_se_deve);
1773 core_scsi3_nodeacl_undepend_item(dest_node_acl); 1772 core_scsi3_nodeacl_undepend_item(dest_node_acl);
1774 core_scsi3_tpg_undepend_item(dest_tpg); 1773 core_scsi3_tpg_undepend_item(dest_tpg);
1775 kfree(tidh_new); 1774 kfree(tidh_new);
1776 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST; 1775 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST;
1777 ret = -EINVAL; 1776 ret = -EINVAL;
1778 goto out; 1777 goto out;
1779 } 1778 }
1780 tidh_new->dest_pr_reg = dest_pr_reg; 1779 tidh_new->dest_pr_reg = dest_pr_reg;
1781 list_add_tail(&tidh_new->dest_list, &tid_dest_list); 1780 list_add_tail(&tidh_new->dest_list, &tid_dest_list);
1782 1781
1783 ptr += tid_len; 1782 ptr += tid_len;
1784 tpdl -= tid_len; 1783 tpdl -= tid_len;
1785 tid_len = 0; 1784 tid_len = 0;
1786 1785
1787 } 1786 }
1788 1787
1789 transport_kunmap_data_sg(cmd); 1788 transport_kunmap_data_sg(cmd);
1790 1789
1791 /* 1790 /*
1792 * Go ahead and create a registrations from tid_dest_list for the 1791 * Go ahead and create a registrations from tid_dest_list for the
1793 * SPEC_I_PT provided TransportID for the *tidh referenced dest_node_acl 1792 * SPEC_I_PT provided TransportID for the *tidh referenced dest_node_acl
1794 * and dest_se_deve. 1793 * and dest_se_deve.
1795 * 1794 *
1796 * The SA Reservation Key from the PROUT is set for the 1795 * The SA Reservation Key from the PROUT is set for the
1797 * registration, and ALL_TG_PT is also passed. ALL_TG_PT=1 1796 * registration, and ALL_TG_PT is also passed. ALL_TG_PT=1
1798 * means that the TransportID Initiator port will be 1797 * means that the TransportID Initiator port will be
1799 * registered on all of the target ports in the SCSI target device 1798 * registered on all of the target ports in the SCSI target device
1800 * ALL_TG_PT=0 means the registration will only be for the 1799 * ALL_TG_PT=0 means the registration will only be for the
1801 * SCSI target port the PROUT REGISTER with SPEC_I_PT=1 1800 * SCSI target port the PROUT REGISTER with SPEC_I_PT=1
1802 * was received. 1801 * was received.
1803 */ 1802 */
1804 list_for_each_entry_safe(tidh, tidh_tmp, &tid_dest_list, dest_list) { 1803 list_for_each_entry_safe(tidh, tidh_tmp, &tid_dest_list, dest_list) {
1805 dest_tpg = tidh->dest_tpg; 1804 dest_tpg = tidh->dest_tpg;
1806 dest_node_acl = tidh->dest_node_acl; 1805 dest_node_acl = tidh->dest_node_acl;
1807 dest_se_deve = tidh->dest_se_deve; 1806 dest_se_deve = tidh->dest_se_deve;
1808 dest_pr_reg = tidh->dest_pr_reg; 1807 dest_pr_reg = tidh->dest_pr_reg;
1809 dest_local_nexus = tidh->dest_local_nexus; 1808 dest_local_nexus = tidh->dest_local_nexus;
1810 1809
1811 list_del(&tidh->dest_list); 1810 list_del(&tidh->dest_list);
1812 kfree(tidh); 1811 kfree(tidh);
1813 1812
1814 memset(i_buf, 0, PR_REG_ISID_ID_LEN); 1813 memset(i_buf, 0, PR_REG_ISID_ID_LEN);
1815 prf_isid = core_pr_dump_initiator_port(dest_pr_reg, &i_buf[0], 1814 prf_isid = core_pr_dump_initiator_port(dest_pr_reg, &i_buf[0],
1816 PR_REG_ISID_ID_LEN); 1815 PR_REG_ISID_ID_LEN);
1817 1816
1818 __core_scsi3_add_registration(cmd->se_dev, dest_node_acl, 1817 __core_scsi3_add_registration(cmd->se_dev, dest_node_acl,
1819 dest_pr_reg, 0, 0); 1818 dest_pr_reg, 0, 0);
1820 1819
1821 pr_debug("SPC-3 PR [%s] SPEC_I_PT: Successfully" 1820 pr_debug("SPC-3 PR [%s] SPEC_I_PT: Successfully"
1822 " registered Transport ID for Node: %s%s Mapped LUN:" 1821 " registered Transport ID for Node: %s%s Mapped LUN:"
1823 " %u\n", dest_tpg->se_tpg_tfo->get_fabric_name(), 1822 " %u\n", dest_tpg->se_tpg_tfo->get_fabric_name(),
1824 dest_node_acl->initiatorname, (prf_isid) ? 1823 dest_node_acl->initiatorname, (prf_isid) ?
1825 &i_buf[0] : "", dest_se_deve->mapped_lun); 1824 &i_buf[0] : "", dest_se_deve->mapped_lun);
1826 1825
1827 if (dest_local_nexus) 1826 if (dest_local_nexus)
1828 continue; 1827 continue;
1829 1828
1830 core_scsi3_lunacl_undepend_item(dest_se_deve); 1829 core_scsi3_lunacl_undepend_item(dest_se_deve);
1831 core_scsi3_nodeacl_undepend_item(dest_node_acl); 1830 core_scsi3_nodeacl_undepend_item(dest_node_acl);
1832 core_scsi3_tpg_undepend_item(dest_tpg); 1831 core_scsi3_tpg_undepend_item(dest_tpg);
1833 } 1832 }
1834 1833
1835 return 0; 1834 return 0;
1836 out: 1835 out:
1837 transport_kunmap_data_sg(cmd); 1836 transport_kunmap_data_sg(cmd);
1838 /* 1837 /*
1839 * For the failure case, release everything from tid_dest_list 1838 * For the failure case, release everything from tid_dest_list
1840 * including *dest_pr_reg and the configfs dependances.. 1839 * including *dest_pr_reg and the configfs dependances..
1841 */ 1840 */
1842 list_for_each_entry_safe(tidh, tidh_tmp, &tid_dest_list, dest_list) { 1841 list_for_each_entry_safe(tidh, tidh_tmp, &tid_dest_list, dest_list) {
1843 dest_tpg = tidh->dest_tpg; 1842 dest_tpg = tidh->dest_tpg;
1844 dest_node_acl = tidh->dest_node_acl; 1843 dest_node_acl = tidh->dest_node_acl;
1845 dest_se_deve = tidh->dest_se_deve; 1844 dest_se_deve = tidh->dest_se_deve;
1846 dest_pr_reg = tidh->dest_pr_reg; 1845 dest_pr_reg = tidh->dest_pr_reg;
1847 dest_local_nexus = tidh->dest_local_nexus; 1846 dest_local_nexus = tidh->dest_local_nexus;
1848 1847
1849 list_del(&tidh->dest_list); 1848 list_del(&tidh->dest_list);
1850 kfree(tidh); 1849 kfree(tidh);
1851 /* 1850 /*
1852 * Release any extra ALL_TG_PT=1 registrations for 1851 * Release any extra ALL_TG_PT=1 registrations for
1853 * the SPEC_I_PT=1 case. 1852 * the SPEC_I_PT=1 case.
1854 */ 1853 */
1855 list_for_each_entry_safe(pr_reg_tmp, pr_reg_tmp_safe, 1854 list_for_each_entry_safe(pr_reg_tmp, pr_reg_tmp_safe,
1856 &dest_pr_reg->pr_reg_atp_list, 1855 &dest_pr_reg->pr_reg_atp_list,
1857 pr_reg_atp_mem_list) { 1856 pr_reg_atp_mem_list) {
1858 list_del(&pr_reg_tmp->pr_reg_atp_mem_list); 1857 list_del(&pr_reg_tmp->pr_reg_atp_mem_list);
1859 core_scsi3_lunacl_undepend_item(pr_reg_tmp->pr_reg_deve); 1858 core_scsi3_lunacl_undepend_item(pr_reg_tmp->pr_reg_deve);
1860 kmem_cache_free(t10_pr_reg_cache, pr_reg_tmp); 1859 kmem_cache_free(t10_pr_reg_cache, pr_reg_tmp);
1861 } 1860 }
1862 1861
1863 kfree(dest_pr_reg->pr_aptpl_buf); 1862 kfree(dest_pr_reg->pr_aptpl_buf);
1864 kmem_cache_free(t10_pr_reg_cache, dest_pr_reg); 1863 kmem_cache_free(t10_pr_reg_cache, dest_pr_reg);
1865 1864
1866 if (dest_local_nexus) 1865 if (dest_local_nexus)
1867 continue; 1866 continue;
1868 1867
1869 core_scsi3_lunacl_undepend_item(dest_se_deve); 1868 core_scsi3_lunacl_undepend_item(dest_se_deve);
1870 core_scsi3_nodeacl_undepend_item(dest_node_acl); 1869 core_scsi3_nodeacl_undepend_item(dest_node_acl);
1871 core_scsi3_tpg_undepend_item(dest_tpg); 1870 core_scsi3_tpg_undepend_item(dest_tpg);
1872 } 1871 }
1873 return ret; 1872 return ret;
1874 } 1873 }
1875 1874
1876 /* 1875 /*
1877 * Called with struct se_device->dev_reservation_lock held 1876 * Called with struct se_device->dev_reservation_lock held
1878 */ 1877 */
1879 static int __core_scsi3_update_aptpl_buf( 1878 static int __core_scsi3_update_aptpl_buf(
1880 struct se_device *dev, 1879 struct se_device *dev,
1881 unsigned char *buf, 1880 unsigned char *buf,
1882 u32 pr_aptpl_buf_len, 1881 u32 pr_aptpl_buf_len,
1883 int clear_aptpl_metadata) 1882 int clear_aptpl_metadata)
1884 { 1883 {
1885 struct se_lun *lun; 1884 struct se_lun *lun;
1886 struct se_portal_group *tpg; 1885 struct se_portal_group *tpg;
1887 struct se_subsystem_dev *su_dev = dev->se_sub_dev; 1886 struct se_subsystem_dev *su_dev = dev->se_sub_dev;
1888 struct t10_pr_registration *pr_reg; 1887 struct t10_pr_registration *pr_reg;
1889 unsigned char tmp[512], isid_buf[32]; 1888 unsigned char tmp[512], isid_buf[32];
1890 ssize_t len = 0; 1889 ssize_t len = 0;
1891 int reg_count = 0; 1890 int reg_count = 0;
1892 1891
1893 memset(buf, 0, pr_aptpl_buf_len); 1892 memset(buf, 0, pr_aptpl_buf_len);
1894 /* 1893 /*
1895 * Called to clear metadata once APTPL has been deactivated. 1894 * Called to clear metadata once APTPL has been deactivated.
1896 */ 1895 */
1897 if (clear_aptpl_metadata) { 1896 if (clear_aptpl_metadata) {
1898 snprintf(buf, pr_aptpl_buf_len, 1897 snprintf(buf, pr_aptpl_buf_len,
1899 "No Registrations or Reservations\n"); 1898 "No Registrations or Reservations\n");
1900 return 0; 1899 return 0;
1901 } 1900 }
1902 /* 1901 /*
1903 * Walk the registration list.. 1902 * Walk the registration list..
1904 */ 1903 */
1905 spin_lock(&su_dev->t10_pr.registration_lock); 1904 spin_lock(&su_dev->t10_pr.registration_lock);
1906 list_for_each_entry(pr_reg, &su_dev->t10_pr.registration_list, 1905 list_for_each_entry(pr_reg, &su_dev->t10_pr.registration_list,
1907 pr_reg_list) { 1906 pr_reg_list) {
1908 1907
1909 tmp[0] = '\0'; 1908 tmp[0] = '\0';
1910 isid_buf[0] = '\0'; 1909 isid_buf[0] = '\0';
1911 tpg = pr_reg->pr_reg_nacl->se_tpg; 1910 tpg = pr_reg->pr_reg_nacl->se_tpg;
1912 lun = pr_reg->pr_reg_tg_pt_lun; 1911 lun = pr_reg->pr_reg_tg_pt_lun;
1913 /* 1912 /*
1914 * Write out any ISID value to APTPL metadata that was included 1913 * Write out any ISID value to APTPL metadata that was included
1915 * in the original registration. 1914 * in the original registration.
1916 */ 1915 */
1917 if (pr_reg->isid_present_at_reg) 1916 if (pr_reg->isid_present_at_reg)
1918 snprintf(isid_buf, 32, "initiator_sid=%s\n", 1917 snprintf(isid_buf, 32, "initiator_sid=%s\n",
1919 pr_reg->pr_reg_isid); 1918 pr_reg->pr_reg_isid);
1920 /* 1919 /*
1921 * Include special metadata if the pr_reg matches the 1920 * Include special metadata if the pr_reg matches the
1922 * reservation holder. 1921 * reservation holder.
1923 */ 1922 */
1924 if (dev->dev_pr_res_holder == pr_reg) { 1923 if (dev->dev_pr_res_holder == pr_reg) {
1925 snprintf(tmp, 512, "PR_REG_START: %d" 1924 snprintf(tmp, 512, "PR_REG_START: %d"
1926 "\ninitiator_fabric=%s\n" 1925 "\ninitiator_fabric=%s\n"
1927 "initiator_node=%s\n%s" 1926 "initiator_node=%s\n%s"
1928 "sa_res_key=%llu\n" 1927 "sa_res_key=%llu\n"
1929 "res_holder=1\nres_type=%02x\n" 1928 "res_holder=1\nres_type=%02x\n"
1930 "res_scope=%02x\nres_all_tg_pt=%d\n" 1929 "res_scope=%02x\nres_all_tg_pt=%d\n"
1931 "mapped_lun=%u\n", reg_count, 1930 "mapped_lun=%u\n", reg_count,
1932 tpg->se_tpg_tfo->get_fabric_name(), 1931 tpg->se_tpg_tfo->get_fabric_name(),
1933 pr_reg->pr_reg_nacl->initiatorname, isid_buf, 1932 pr_reg->pr_reg_nacl->initiatorname, isid_buf,
1934 pr_reg->pr_res_key, pr_reg->pr_res_type, 1933 pr_reg->pr_res_key, pr_reg->pr_res_type,
1935 pr_reg->pr_res_scope, pr_reg->pr_reg_all_tg_pt, 1934 pr_reg->pr_res_scope, pr_reg->pr_reg_all_tg_pt,
1936 pr_reg->pr_res_mapped_lun); 1935 pr_reg->pr_res_mapped_lun);
1937 } else { 1936 } else {
1938 snprintf(tmp, 512, "PR_REG_START: %d\n" 1937 snprintf(tmp, 512, "PR_REG_START: %d\n"
1939 "initiator_fabric=%s\ninitiator_node=%s\n%s" 1938 "initiator_fabric=%s\ninitiator_node=%s\n%s"
1940 "sa_res_key=%llu\nres_holder=0\n" 1939 "sa_res_key=%llu\nres_holder=0\n"
1941 "res_all_tg_pt=%d\nmapped_lun=%u\n", 1940 "res_all_tg_pt=%d\nmapped_lun=%u\n",
1942 reg_count, tpg->se_tpg_tfo->get_fabric_name(), 1941 reg_count, tpg->se_tpg_tfo->get_fabric_name(),
1943 pr_reg->pr_reg_nacl->initiatorname, isid_buf, 1942 pr_reg->pr_reg_nacl->initiatorname, isid_buf,
1944 pr_reg->pr_res_key, pr_reg->pr_reg_all_tg_pt, 1943 pr_reg->pr_res_key, pr_reg->pr_reg_all_tg_pt,
1945 pr_reg->pr_res_mapped_lun); 1944 pr_reg->pr_res_mapped_lun);
1946 } 1945 }
1947 1946
1948 if ((len + strlen(tmp) >= pr_aptpl_buf_len)) { 1947 if ((len + strlen(tmp) >= pr_aptpl_buf_len)) {
1949 pr_err("Unable to update renaming" 1948 pr_err("Unable to update renaming"
1950 " APTPL metadata\n"); 1949 " APTPL metadata\n");
1951 spin_unlock(&su_dev->t10_pr.registration_lock); 1950 spin_unlock(&su_dev->t10_pr.registration_lock);
1952 return -EMSGSIZE; 1951 return -EMSGSIZE;
1953 } 1952 }
1954 len += sprintf(buf+len, "%s", tmp); 1953 len += sprintf(buf+len, "%s", tmp);
1955 1954
1956 /* 1955 /*
1957 * Include information about the associated SCSI target port. 1956 * Include information about the associated SCSI target port.
1958 */ 1957 */
1959 snprintf(tmp, 512, "target_fabric=%s\ntarget_node=%s\n" 1958 snprintf(tmp, 512, "target_fabric=%s\ntarget_node=%s\n"
1960 "tpgt=%hu\nport_rtpi=%hu\ntarget_lun=%u\nPR_REG_END:" 1959 "tpgt=%hu\nport_rtpi=%hu\ntarget_lun=%u\nPR_REG_END:"
1961 " %d\n", tpg->se_tpg_tfo->get_fabric_name(), 1960 " %d\n", tpg->se_tpg_tfo->get_fabric_name(),
1962 tpg->se_tpg_tfo->tpg_get_wwn(tpg), 1961 tpg->se_tpg_tfo->tpg_get_wwn(tpg),
1963 tpg->se_tpg_tfo->tpg_get_tag(tpg), 1962 tpg->se_tpg_tfo->tpg_get_tag(tpg),
1964 lun->lun_sep->sep_rtpi, lun->unpacked_lun, reg_count); 1963 lun->lun_sep->sep_rtpi, lun->unpacked_lun, reg_count);
1965 1964
1966 if ((len + strlen(tmp) >= pr_aptpl_buf_len)) { 1965 if ((len + strlen(tmp) >= pr_aptpl_buf_len)) {
1967 pr_err("Unable to update renaming" 1966 pr_err("Unable to update renaming"
1968 " APTPL metadata\n"); 1967 " APTPL metadata\n");
1969 spin_unlock(&su_dev->t10_pr.registration_lock); 1968 spin_unlock(&su_dev->t10_pr.registration_lock);
1970 return -EMSGSIZE; 1969 return -EMSGSIZE;
1971 } 1970 }
1972 len += sprintf(buf+len, "%s", tmp); 1971 len += sprintf(buf+len, "%s", tmp);
1973 reg_count++; 1972 reg_count++;
1974 } 1973 }
1975 spin_unlock(&su_dev->t10_pr.registration_lock); 1974 spin_unlock(&su_dev->t10_pr.registration_lock);
1976 1975
1977 if (!reg_count) 1976 if (!reg_count)
1978 len += sprintf(buf+len, "No Registrations or Reservations"); 1977 len += sprintf(buf+len, "No Registrations or Reservations");
1979 1978
1980 return 0; 1979 return 0;
1981 } 1980 }
1982 1981
1983 static int core_scsi3_update_aptpl_buf( 1982 static int core_scsi3_update_aptpl_buf(
1984 struct se_device *dev, 1983 struct se_device *dev,
1985 unsigned char *buf, 1984 unsigned char *buf,
1986 u32 pr_aptpl_buf_len, 1985 u32 pr_aptpl_buf_len,
1987 int clear_aptpl_metadata) 1986 int clear_aptpl_metadata)
1988 { 1987 {
1989 int ret; 1988 int ret;
1990 1989
1991 spin_lock(&dev->dev_reservation_lock); 1990 spin_lock(&dev->dev_reservation_lock);
1992 ret = __core_scsi3_update_aptpl_buf(dev, buf, pr_aptpl_buf_len, 1991 ret = __core_scsi3_update_aptpl_buf(dev, buf, pr_aptpl_buf_len,
1993 clear_aptpl_metadata); 1992 clear_aptpl_metadata);
1994 spin_unlock(&dev->dev_reservation_lock); 1993 spin_unlock(&dev->dev_reservation_lock);
1995 1994
1996 return ret; 1995 return ret;
1997 } 1996 }
1998 1997
1999 /* 1998 /*
2000 * Called with struct se_device->aptpl_file_mutex held 1999 * Called with struct se_device->aptpl_file_mutex held
2001 */ 2000 */
2002 static int __core_scsi3_write_aptpl_to_file( 2001 static int __core_scsi3_write_aptpl_to_file(
2003 struct se_device *dev, 2002 struct se_device *dev,
2004 unsigned char *buf, 2003 unsigned char *buf,
2005 u32 pr_aptpl_buf_len) 2004 u32 pr_aptpl_buf_len)
2006 { 2005 {
2007 struct t10_wwn *wwn = &dev->se_sub_dev->t10_wwn; 2006 struct t10_wwn *wwn = &dev->se_sub_dev->t10_wwn;
2008 struct file *file; 2007 struct file *file;
2009 struct iovec iov[1]; 2008 struct iovec iov[1];
2010 mm_segment_t old_fs; 2009 mm_segment_t old_fs;
2011 int flags = O_RDWR | O_CREAT | O_TRUNC; 2010 int flags = O_RDWR | O_CREAT | O_TRUNC;
2012 char path[512]; 2011 char path[512];
2013 int ret; 2012 int ret;
2014 2013
2015 memset(iov, 0, sizeof(struct iovec)); 2014 memset(iov, 0, sizeof(struct iovec));
2016 memset(path, 0, 512); 2015 memset(path, 0, 512);
2017 2016
2018 if (strlen(&wwn->unit_serial[0]) >= 512) { 2017 if (strlen(&wwn->unit_serial[0]) >= 512) {
2019 pr_err("WWN value for struct se_device does not fit" 2018 pr_err("WWN value for struct se_device does not fit"
2020 " into path buffer\n"); 2019 " into path buffer\n");
2021 return -EMSGSIZE; 2020 return -EMSGSIZE;
2022 } 2021 }
2023 2022
2024 snprintf(path, 512, "/var/target/pr/aptpl_%s", &wwn->unit_serial[0]); 2023 snprintf(path, 512, "/var/target/pr/aptpl_%s", &wwn->unit_serial[0]);
2025 file = filp_open(path, flags, 0600); 2024 file = filp_open(path, flags, 0600);
2026 if (IS_ERR(file) || !file || !file->f_dentry) { 2025 if (IS_ERR(file) || !file || !file->f_dentry) {
2027 pr_err("filp_open(%s) for APTPL metadata" 2026 pr_err("filp_open(%s) for APTPL metadata"
2028 " failed\n", path); 2027 " failed\n", path);
2029 return (PTR_ERR(file) < 0 ? PTR_ERR(file) : -ENOENT); 2028 return (PTR_ERR(file) < 0 ? PTR_ERR(file) : -ENOENT);
2030 } 2029 }
2031 2030
2032 iov[0].iov_base = &buf[0]; 2031 iov[0].iov_base = &buf[0];
2033 if (!pr_aptpl_buf_len) 2032 if (!pr_aptpl_buf_len)
2034 iov[0].iov_len = (strlen(&buf[0]) + 1); /* Add extra for NULL */ 2033 iov[0].iov_len = (strlen(&buf[0]) + 1); /* Add extra for NULL */
2035 else 2034 else
2036 iov[0].iov_len = pr_aptpl_buf_len; 2035 iov[0].iov_len = pr_aptpl_buf_len;
2037 2036
2038 old_fs = get_fs(); 2037 old_fs = get_fs();
2039 set_fs(get_ds()); 2038 set_fs(get_ds());
2040 ret = vfs_writev(file, &iov[0], 1, &file->f_pos); 2039 ret = vfs_writev(file, &iov[0], 1, &file->f_pos);
2041 set_fs(old_fs); 2040 set_fs(old_fs);
2042 2041
2043 if (ret < 0) { 2042 if (ret < 0) {
2044 pr_debug("Error writing APTPL metadata file: %s\n", path); 2043 pr_debug("Error writing APTPL metadata file: %s\n", path);
2045 filp_close(file, NULL); 2044 filp_close(file, NULL);
2046 return -EIO; 2045 return -EIO;
2047 } 2046 }
2048 filp_close(file, NULL); 2047 filp_close(file, NULL);
2049 2048
2050 return 0; 2049 return 0;
2051 } 2050 }
2052 2051
2053 static int core_scsi3_update_and_write_aptpl( 2052 static int core_scsi3_update_and_write_aptpl(
2054 struct se_device *dev, 2053 struct se_device *dev,
2055 unsigned char *in_buf, 2054 unsigned char *in_buf,
2056 u32 in_pr_aptpl_buf_len) 2055 u32 in_pr_aptpl_buf_len)
2057 { 2056 {
2058 unsigned char null_buf[64], *buf; 2057 unsigned char null_buf[64], *buf;
2059 u32 pr_aptpl_buf_len; 2058 u32 pr_aptpl_buf_len;
2060 int ret, clear_aptpl_metadata = 0; 2059 int ret, clear_aptpl_metadata = 0;
2061 /* 2060 /*
2062 * Can be called with a NULL pointer from PROUT service action CLEAR 2061 * Can be called with a NULL pointer from PROUT service action CLEAR
2063 */ 2062 */
2064 if (!in_buf) { 2063 if (!in_buf) {
2065 memset(null_buf, 0, 64); 2064 memset(null_buf, 0, 64);
2066 buf = &null_buf[0]; 2065 buf = &null_buf[0];
2067 /* 2066 /*
2068 * This will clear the APTPL metadata to: 2067 * This will clear the APTPL metadata to:
2069 * "No Registrations or Reservations" status 2068 * "No Registrations or Reservations" status
2070 */ 2069 */
2071 pr_aptpl_buf_len = 64; 2070 pr_aptpl_buf_len = 64;
2072 clear_aptpl_metadata = 1; 2071 clear_aptpl_metadata = 1;
2073 } else { 2072 } else {
2074 buf = in_buf; 2073 buf = in_buf;
2075 pr_aptpl_buf_len = in_pr_aptpl_buf_len; 2074 pr_aptpl_buf_len = in_pr_aptpl_buf_len;
2076 } 2075 }
2077 2076
2078 ret = core_scsi3_update_aptpl_buf(dev, buf, pr_aptpl_buf_len, 2077 ret = core_scsi3_update_aptpl_buf(dev, buf, pr_aptpl_buf_len,
2079 clear_aptpl_metadata); 2078 clear_aptpl_metadata);
2080 if (ret != 0) 2079 if (ret != 0)
2081 return ret; 2080 return ret;
2082 /* 2081 /*
2083 * __core_scsi3_write_aptpl_to_file() will call strlen() 2082 * __core_scsi3_write_aptpl_to_file() will call strlen()
2084 * on the passed buf to determine pr_aptpl_buf_len. 2083 * on the passed buf to determine pr_aptpl_buf_len.
2085 */ 2084 */
2086 ret = __core_scsi3_write_aptpl_to_file(dev, buf, 0); 2085 ret = __core_scsi3_write_aptpl_to_file(dev, buf, 0);
2087 if (ret != 0) 2086 if (ret != 0)
2088 return ret; 2087 return ret;
2089 2088
2090 return ret; 2089 return ret;
2091 } 2090 }
2092 2091
2093 static int core_scsi3_emulate_pro_register( 2092 static int core_scsi3_emulate_pro_register(
2094 struct se_cmd *cmd, 2093 struct se_cmd *cmd,
2095 u64 res_key, 2094 u64 res_key,
2096 u64 sa_res_key, 2095 u64 sa_res_key,
2097 int aptpl, 2096 int aptpl,
2098 int all_tg_pt, 2097 int all_tg_pt,
2099 int spec_i_pt, 2098 int spec_i_pt,
2100 int ignore_key) 2099 int ignore_key)
2101 { 2100 {
2102 struct se_session *se_sess = cmd->se_sess; 2101 struct se_session *se_sess = cmd->se_sess;
2103 struct se_device *dev = cmd->se_dev; 2102 struct se_device *dev = cmd->se_dev;
2104 struct se_dev_entry *se_deve; 2103 struct se_dev_entry *se_deve;
2105 struct se_lun *se_lun = cmd->se_lun; 2104 struct se_lun *se_lun = cmd->se_lun;
2106 struct se_portal_group *se_tpg; 2105 struct se_portal_group *se_tpg;
2107 struct t10_pr_registration *pr_reg, *pr_reg_p, *pr_reg_tmp, *pr_reg_e; 2106 struct t10_pr_registration *pr_reg, *pr_reg_p, *pr_reg_tmp, *pr_reg_e;
2108 struct t10_reservation *pr_tmpl = &dev->se_sub_dev->t10_pr; 2107 struct t10_reservation *pr_tmpl = &dev->se_sub_dev->t10_pr;
2109 /* Used for APTPL metadata w/ UNREGISTER */ 2108 /* Used for APTPL metadata w/ UNREGISTER */
2110 unsigned char *pr_aptpl_buf = NULL; 2109 unsigned char *pr_aptpl_buf = NULL;
2111 unsigned char isid_buf[PR_REG_ISID_LEN], *isid_ptr = NULL; 2110 unsigned char isid_buf[PR_REG_ISID_LEN], *isid_ptr = NULL;
2112 int pr_holder = 0, ret = 0, type; 2111 int pr_holder = 0, ret = 0, type;
2113 2112
2114 if (!se_sess || !se_lun) { 2113 if (!se_sess || !se_lun) {
2115 pr_err("SPC-3 PR: se_sess || struct se_lun is NULL!\n"); 2114 pr_err("SPC-3 PR: se_sess || struct se_lun is NULL!\n");
2116 cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; 2115 cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
2117 return -EINVAL; 2116 return -EINVAL;
2118 } 2117 }
2119 se_tpg = se_sess->se_tpg; 2118 se_tpg = se_sess->se_tpg;
2120 se_deve = &se_sess->se_node_acl->device_list[cmd->orig_fe_lun]; 2119 se_deve = &se_sess->se_node_acl->device_list[cmd->orig_fe_lun];
2121 2120
2122 if (se_tpg->se_tpg_tfo->sess_get_initiator_sid) { 2121 if (se_tpg->se_tpg_tfo->sess_get_initiator_sid) {
2123 memset(&isid_buf[0], 0, PR_REG_ISID_LEN); 2122 memset(&isid_buf[0], 0, PR_REG_ISID_LEN);
2124 se_tpg->se_tpg_tfo->sess_get_initiator_sid(se_sess, &isid_buf[0], 2123 se_tpg->se_tpg_tfo->sess_get_initiator_sid(se_sess, &isid_buf[0],
2125 PR_REG_ISID_LEN); 2124 PR_REG_ISID_LEN);
2126 isid_ptr = &isid_buf[0]; 2125 isid_ptr = &isid_buf[0];
2127 } 2126 }
2128 /* 2127 /*
2129 * Follow logic from spc4r17 Section 5.7.7, Register Behaviors Table 47 2128 * Follow logic from spc4r17 Section 5.7.7, Register Behaviors Table 47
2130 */ 2129 */
2131 pr_reg_e = core_scsi3_locate_pr_reg(dev, se_sess->se_node_acl, se_sess); 2130 pr_reg_e = core_scsi3_locate_pr_reg(dev, se_sess->se_node_acl, se_sess);
2132 if (!pr_reg_e) { 2131 if (!pr_reg_e) {
2133 if (res_key) { 2132 if (res_key) {
2134 pr_warn("SPC-3 PR: Reservation Key non-zero" 2133 pr_warn("SPC-3 PR: Reservation Key non-zero"
2135 " for SA REGISTER, returning CONFLICT\n"); 2134 " for SA REGISTER, returning CONFLICT\n");
2136 cmd->scsi_sense_reason = TCM_RESERVATION_CONFLICT; 2135 cmd->scsi_sense_reason = TCM_RESERVATION_CONFLICT;
2137 return -EINVAL; 2136 return -EINVAL;
2138 } 2137 }
2139 /* 2138 /*
2140 * Do nothing but return GOOD status. 2139 * Do nothing but return GOOD status.
2141 */ 2140 */
2142 if (!sa_res_key) 2141 if (!sa_res_key)
2143 return 0; 2142 return 0;
2144 2143
2145 if (!spec_i_pt) { 2144 if (!spec_i_pt) {
2146 /* 2145 /*
2147 * Perform the Service Action REGISTER on the Initiator 2146 * Perform the Service Action REGISTER on the Initiator
2148 * Port Endpoint that the PRO was received from on the 2147 * Port Endpoint that the PRO was received from on the
2149 * Logical Unit of the SCSI device server. 2148 * Logical Unit of the SCSI device server.
2150 */ 2149 */
2151 ret = core_scsi3_alloc_registration(cmd->se_dev, 2150 ret = core_scsi3_alloc_registration(cmd->se_dev,
2152 se_sess->se_node_acl, se_deve, isid_ptr, 2151 se_sess->se_node_acl, se_deve, isid_ptr,
2153 sa_res_key, all_tg_pt, aptpl, 2152 sa_res_key, all_tg_pt, aptpl,
2154 ignore_key, 0); 2153 ignore_key, 0);
2155 if (ret != 0) { 2154 if (ret != 0) {
2156 pr_err("Unable to allocate" 2155 pr_err("Unable to allocate"
2157 " struct t10_pr_registration\n"); 2156 " struct t10_pr_registration\n");
2158 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST; 2157 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST;
2159 return -EINVAL; 2158 return -EINVAL;
2160 } 2159 }
2161 } else { 2160 } else {
2162 /* 2161 /*
2163 * Register both the Initiator port that received 2162 * Register both the Initiator port that received
2164 * PROUT SA REGISTER + SPEC_I_PT=1 and extract SCSI 2163 * PROUT SA REGISTER + SPEC_I_PT=1 and extract SCSI
2165 * TransportID from Parameter list and loop through 2164 * TransportID from Parameter list and loop through
2166 * fabric dependent parameter list while calling 2165 * fabric dependent parameter list while calling
2167 * logic from of core_scsi3_alloc_registration() for 2166 * logic from of core_scsi3_alloc_registration() for
2168 * each TransportID provided SCSI Initiator Port/Device 2167 * each TransportID provided SCSI Initiator Port/Device
2169 */ 2168 */
2170 ret = core_scsi3_decode_spec_i_port(cmd, se_tpg, 2169 ret = core_scsi3_decode_spec_i_port(cmd, se_tpg,
2171 isid_ptr, sa_res_key, all_tg_pt, aptpl); 2170 isid_ptr, sa_res_key, all_tg_pt, aptpl);
2172 if (ret != 0) 2171 if (ret != 0)
2173 return ret; 2172 return ret;
2174 } 2173 }
2175 /* 2174 /*
2176 * Nothing left to do for the APTPL=0 case. 2175 * Nothing left to do for the APTPL=0 case.
2177 */ 2176 */
2178 if (!aptpl) { 2177 if (!aptpl) {
2179 pr_tmpl->pr_aptpl_active = 0; 2178 pr_tmpl->pr_aptpl_active = 0;
2180 core_scsi3_update_and_write_aptpl(cmd->se_dev, NULL, 0); 2179 core_scsi3_update_and_write_aptpl(cmd->se_dev, NULL, 0);
2181 pr_debug("SPC-3 PR: Set APTPL Bit Deactivated for" 2180 pr_debug("SPC-3 PR: Set APTPL Bit Deactivated for"
2182 " REGISTER\n"); 2181 " REGISTER\n");
2183 return 0; 2182 return 0;
2184 } 2183 }
2185 /* 2184 /*
2186 * Locate the newly allocated local I_T Nexus *pr_reg, and 2185 * Locate the newly allocated local I_T Nexus *pr_reg, and
2187 * update the APTPL metadata information using its 2186 * update the APTPL metadata information using its
2188 * preallocated *pr_reg->pr_aptpl_buf. 2187 * preallocated *pr_reg->pr_aptpl_buf.
2189 */ 2188 */
2190 pr_reg = core_scsi3_locate_pr_reg(cmd->se_dev, 2189 pr_reg = core_scsi3_locate_pr_reg(cmd->se_dev,
2191 se_sess->se_node_acl, se_sess); 2190 se_sess->se_node_acl, se_sess);
2192 2191
2193 ret = core_scsi3_update_and_write_aptpl(cmd->se_dev, 2192 ret = core_scsi3_update_and_write_aptpl(cmd->se_dev,
2194 &pr_reg->pr_aptpl_buf[0], 2193 &pr_reg->pr_aptpl_buf[0],
2195 pr_tmpl->pr_aptpl_buf_len); 2194 pr_tmpl->pr_aptpl_buf_len);
2196 if (!ret) { 2195 if (!ret) {
2197 pr_tmpl->pr_aptpl_active = 1; 2196 pr_tmpl->pr_aptpl_active = 1;
2198 pr_debug("SPC-3 PR: Set APTPL Bit Activated for REGISTER\n"); 2197 pr_debug("SPC-3 PR: Set APTPL Bit Activated for REGISTER\n");
2199 } 2198 }
2200 2199
2201 core_scsi3_put_pr_reg(pr_reg); 2200 core_scsi3_put_pr_reg(pr_reg);
2202 return ret; 2201 return ret;
2203 } else { 2202 } else {
2204 /* 2203 /*
2205 * Locate the existing *pr_reg via struct se_node_acl pointers 2204 * Locate the existing *pr_reg via struct se_node_acl pointers
2206 */ 2205 */
2207 pr_reg = pr_reg_e; 2206 pr_reg = pr_reg_e;
2208 type = pr_reg->pr_res_type; 2207 type = pr_reg->pr_res_type;
2209 2208
2210 if (!ignore_key) { 2209 if (!ignore_key) {
2211 if (res_key != pr_reg->pr_res_key) { 2210 if (res_key != pr_reg->pr_res_key) {
2212 pr_err("SPC-3 PR REGISTER: Received" 2211 pr_err("SPC-3 PR REGISTER: Received"
2213 " res_key: 0x%016Lx does not match" 2212 " res_key: 0x%016Lx does not match"
2214 " existing SA REGISTER res_key:" 2213 " existing SA REGISTER res_key:"
2215 " 0x%016Lx\n", res_key, 2214 " 0x%016Lx\n", res_key,
2216 pr_reg->pr_res_key); 2215 pr_reg->pr_res_key);
2217 core_scsi3_put_pr_reg(pr_reg); 2216 core_scsi3_put_pr_reg(pr_reg);
2218 cmd->scsi_sense_reason = TCM_RESERVATION_CONFLICT; 2217 cmd->scsi_sense_reason = TCM_RESERVATION_CONFLICT;
2219 return -EINVAL; 2218 return -EINVAL;
2220 } 2219 }
2221 } 2220 }
2222 if (spec_i_pt) { 2221 if (spec_i_pt) {
2223 pr_err("SPC-3 PR UNREGISTER: SPEC_I_PT" 2222 pr_err("SPC-3 PR UNREGISTER: SPEC_I_PT"
2224 " set while sa_res_key=0\n"); 2223 " set while sa_res_key=0\n");
2225 core_scsi3_put_pr_reg(pr_reg); 2224 core_scsi3_put_pr_reg(pr_reg);
2226 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST; 2225 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST;
2227 return -EINVAL; 2226 return -EINVAL;
2228 } 2227 }
2229 /* 2228 /*
2230 * An existing ALL_TG_PT=1 registration being released 2229 * An existing ALL_TG_PT=1 registration being released
2231 * must also set ALL_TG_PT=1 in the incoming PROUT. 2230 * must also set ALL_TG_PT=1 in the incoming PROUT.
2232 */ 2231 */
2233 if (pr_reg->pr_reg_all_tg_pt && !(all_tg_pt)) { 2232 if (pr_reg->pr_reg_all_tg_pt && !(all_tg_pt)) {
2234 pr_err("SPC-3 PR UNREGISTER: ALL_TG_PT=1" 2233 pr_err("SPC-3 PR UNREGISTER: ALL_TG_PT=1"
2235 " registration exists, but ALL_TG_PT=1 bit not" 2234 " registration exists, but ALL_TG_PT=1 bit not"
2236 " present in received PROUT\n"); 2235 " present in received PROUT\n");
2237 core_scsi3_put_pr_reg(pr_reg); 2236 core_scsi3_put_pr_reg(pr_reg);
2238 cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD; 2237 cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD;
2239 return -EINVAL; 2238 return -EINVAL;
2240 } 2239 }
2241 /* 2240 /*
2242 * Allocate APTPL metadata buffer used for UNREGISTER ops 2241 * Allocate APTPL metadata buffer used for UNREGISTER ops
2243 */ 2242 */
2244 if (aptpl) { 2243 if (aptpl) {
2245 pr_aptpl_buf = kzalloc(pr_tmpl->pr_aptpl_buf_len, 2244 pr_aptpl_buf = kzalloc(pr_tmpl->pr_aptpl_buf_len,
2246 GFP_KERNEL); 2245 GFP_KERNEL);
2247 if (!pr_aptpl_buf) { 2246 if (!pr_aptpl_buf) {
2248 pr_err("Unable to allocate" 2247 pr_err("Unable to allocate"
2249 " pr_aptpl_buf\n"); 2248 " pr_aptpl_buf\n");
2250 core_scsi3_put_pr_reg(pr_reg); 2249 core_scsi3_put_pr_reg(pr_reg);
2251 cmd->scsi_sense_reason = 2250 cmd->scsi_sense_reason =
2252 TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; 2251 TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
2253 return -EINVAL; 2252 return -EINVAL;
2254 } 2253 }
2255 } 2254 }
2256 /* 2255 /*
2257 * sa_res_key=0 Unregister Reservation Key for registered I_T 2256 * sa_res_key=0 Unregister Reservation Key for registered I_T
2258 * Nexus sa_res_key=1 Change Reservation Key for registered I_T 2257 * Nexus sa_res_key=1 Change Reservation Key for registered I_T
2259 * Nexus. 2258 * Nexus.
2260 */ 2259 */
2261 if (!sa_res_key) { 2260 if (!sa_res_key) {
2262 pr_holder = core_scsi3_check_implict_release( 2261 pr_holder = core_scsi3_check_implict_release(
2263 cmd->se_dev, pr_reg); 2262 cmd->se_dev, pr_reg);
2264 if (pr_holder < 0) { 2263 if (pr_holder < 0) {
2265 kfree(pr_aptpl_buf); 2264 kfree(pr_aptpl_buf);
2266 core_scsi3_put_pr_reg(pr_reg); 2265 core_scsi3_put_pr_reg(pr_reg);
2267 cmd->scsi_sense_reason = TCM_RESERVATION_CONFLICT; 2266 cmd->scsi_sense_reason = TCM_RESERVATION_CONFLICT;
2268 return -EINVAL; 2267 return -EINVAL;
2269 } 2268 }
2270 2269
2271 spin_lock(&pr_tmpl->registration_lock); 2270 spin_lock(&pr_tmpl->registration_lock);
2272 /* 2271 /*
2273 * Release all ALL_TG_PT=1 for the matching SCSI Initiator Port 2272 * Release all ALL_TG_PT=1 for the matching SCSI Initiator Port
2274 * and matching pr_res_key. 2273 * and matching pr_res_key.
2275 */ 2274 */
2276 if (pr_reg->pr_reg_all_tg_pt) { 2275 if (pr_reg->pr_reg_all_tg_pt) {
2277 list_for_each_entry_safe(pr_reg_p, pr_reg_tmp, 2276 list_for_each_entry_safe(pr_reg_p, pr_reg_tmp,
2278 &pr_tmpl->registration_list, 2277 &pr_tmpl->registration_list,
2279 pr_reg_list) { 2278 pr_reg_list) {
2280 2279
2281 if (!pr_reg_p->pr_reg_all_tg_pt) 2280 if (!pr_reg_p->pr_reg_all_tg_pt)
2282 continue; 2281 continue;
2283 2282
2284 if (pr_reg_p->pr_res_key != res_key) 2283 if (pr_reg_p->pr_res_key != res_key)
2285 continue; 2284 continue;
2286 2285
2287 if (pr_reg == pr_reg_p) 2286 if (pr_reg == pr_reg_p)
2288 continue; 2287 continue;
2289 2288
2290 if (strcmp(pr_reg->pr_reg_nacl->initiatorname, 2289 if (strcmp(pr_reg->pr_reg_nacl->initiatorname,
2291 pr_reg_p->pr_reg_nacl->initiatorname)) 2290 pr_reg_p->pr_reg_nacl->initiatorname))
2292 continue; 2291 continue;
2293 2292
2294 __core_scsi3_free_registration(dev, 2293 __core_scsi3_free_registration(dev,
2295 pr_reg_p, NULL, 0); 2294 pr_reg_p, NULL, 0);
2296 } 2295 }
2297 } 2296 }
2298 /* 2297 /*
2299 * Release the calling I_T Nexus registration now.. 2298 * Release the calling I_T Nexus registration now..
2300 */ 2299 */
2301 __core_scsi3_free_registration(cmd->se_dev, pr_reg, 2300 __core_scsi3_free_registration(cmd->se_dev, pr_reg,
2302 NULL, 1); 2301 NULL, 1);
2303 /* 2302 /*
2304 * From spc4r17, section 5.7.11.3 Unregistering 2303 * From spc4r17, section 5.7.11.3 Unregistering
2305 * 2304 *
2306 * If the persistent reservation is a registrants only 2305 * If the persistent reservation is a registrants only
2307 * type, the device server shall establish a unit 2306 * type, the device server shall establish a unit
2308 * attention condition for the initiator port associated 2307 * attention condition for the initiator port associated
2309 * with every registered I_T nexus except for the I_T 2308 * with every registered I_T nexus except for the I_T
2310 * nexus on which the PERSISTENT RESERVE OUT command was 2309 * nexus on which the PERSISTENT RESERVE OUT command was
2311 * received, with the additional sense code set to 2310 * received, with the additional sense code set to
2312 * RESERVATIONS RELEASED. 2311 * RESERVATIONS RELEASED.
2313 */ 2312 */
2314 if (pr_holder && 2313 if (pr_holder &&
2315 ((type == PR_TYPE_WRITE_EXCLUSIVE_REGONLY) || 2314 ((type == PR_TYPE_WRITE_EXCLUSIVE_REGONLY) ||
2316 (type == PR_TYPE_EXCLUSIVE_ACCESS_REGONLY))) { 2315 (type == PR_TYPE_EXCLUSIVE_ACCESS_REGONLY))) {
2317 list_for_each_entry(pr_reg_p, 2316 list_for_each_entry(pr_reg_p,
2318 &pr_tmpl->registration_list, 2317 &pr_tmpl->registration_list,
2319 pr_reg_list) { 2318 pr_reg_list) {
2320 2319
2321 core_scsi3_ua_allocate( 2320 core_scsi3_ua_allocate(
2322 pr_reg_p->pr_reg_nacl, 2321 pr_reg_p->pr_reg_nacl,
2323 pr_reg_p->pr_res_mapped_lun, 2322 pr_reg_p->pr_res_mapped_lun,
2324 0x2A, 2323 0x2A,
2325 ASCQ_2AH_RESERVATIONS_RELEASED); 2324 ASCQ_2AH_RESERVATIONS_RELEASED);
2326 } 2325 }
2327 } 2326 }
2328 spin_unlock(&pr_tmpl->registration_lock); 2327 spin_unlock(&pr_tmpl->registration_lock);
2329 2328
2330 if (!aptpl) { 2329 if (!aptpl) {
2331 pr_tmpl->pr_aptpl_active = 0; 2330 pr_tmpl->pr_aptpl_active = 0;
2332 core_scsi3_update_and_write_aptpl(dev, NULL, 0); 2331 core_scsi3_update_and_write_aptpl(dev, NULL, 0);
2333 pr_debug("SPC-3 PR: Set APTPL Bit Deactivated" 2332 pr_debug("SPC-3 PR: Set APTPL Bit Deactivated"
2334 " for UNREGISTER\n"); 2333 " for UNREGISTER\n");
2335 return 0; 2334 return 0;
2336 } 2335 }
2337 2336
2338 ret = core_scsi3_update_and_write_aptpl(dev, 2337 ret = core_scsi3_update_and_write_aptpl(dev,
2339 &pr_aptpl_buf[0], 2338 &pr_aptpl_buf[0],
2340 pr_tmpl->pr_aptpl_buf_len); 2339 pr_tmpl->pr_aptpl_buf_len);
2341 if (!ret) { 2340 if (!ret) {
2342 pr_tmpl->pr_aptpl_active = 1; 2341 pr_tmpl->pr_aptpl_active = 1;
2343 pr_debug("SPC-3 PR: Set APTPL Bit Activated" 2342 pr_debug("SPC-3 PR: Set APTPL Bit Activated"
2344 " for UNREGISTER\n"); 2343 " for UNREGISTER\n");
2345 } 2344 }
2346 2345
2347 kfree(pr_aptpl_buf); 2346 kfree(pr_aptpl_buf);
2348 return ret; 2347 return ret;
2349 } else { 2348 } else {
2350 /* 2349 /*
2351 * Increment PRgeneration counter for struct se_device" 2350 * Increment PRgeneration counter for struct se_device"
2352 * upon a successful REGISTER, see spc4r17 section 6.3.2 2351 * upon a successful REGISTER, see spc4r17 section 6.3.2
2353 * READ_KEYS service action. 2352 * READ_KEYS service action.
2354 */ 2353 */
2355 pr_reg->pr_res_generation = core_scsi3_pr_generation( 2354 pr_reg->pr_res_generation = core_scsi3_pr_generation(
2356 cmd->se_dev); 2355 cmd->se_dev);
2357 pr_reg->pr_res_key = sa_res_key; 2356 pr_reg->pr_res_key = sa_res_key;
2358 pr_debug("SPC-3 PR [%s] REGISTER%s: Changed Reservation" 2357 pr_debug("SPC-3 PR [%s] REGISTER%s: Changed Reservation"
2359 " Key for %s to: 0x%016Lx PRgeneration:" 2358 " Key for %s to: 0x%016Lx PRgeneration:"
2360 " 0x%08x\n", cmd->se_tfo->get_fabric_name(), 2359 " 0x%08x\n", cmd->se_tfo->get_fabric_name(),
2361 (ignore_key) ? "_AND_IGNORE_EXISTING_KEY" : "", 2360 (ignore_key) ? "_AND_IGNORE_EXISTING_KEY" : "",
2362 pr_reg->pr_reg_nacl->initiatorname, 2361 pr_reg->pr_reg_nacl->initiatorname,
2363 pr_reg->pr_res_key, pr_reg->pr_res_generation); 2362 pr_reg->pr_res_key, pr_reg->pr_res_generation);
2364 2363
2365 if (!aptpl) { 2364 if (!aptpl) {
2366 pr_tmpl->pr_aptpl_active = 0; 2365 pr_tmpl->pr_aptpl_active = 0;
2367 core_scsi3_update_and_write_aptpl(dev, NULL, 0); 2366 core_scsi3_update_and_write_aptpl(dev, NULL, 0);
2368 core_scsi3_put_pr_reg(pr_reg); 2367 core_scsi3_put_pr_reg(pr_reg);
2369 pr_debug("SPC-3 PR: Set APTPL Bit Deactivated" 2368 pr_debug("SPC-3 PR: Set APTPL Bit Deactivated"
2370 " for REGISTER\n"); 2369 " for REGISTER\n");
2371 return 0; 2370 return 0;
2372 } 2371 }
2373 2372
2374 ret = core_scsi3_update_and_write_aptpl(dev, 2373 ret = core_scsi3_update_and_write_aptpl(dev,
2375 &pr_aptpl_buf[0], 2374 &pr_aptpl_buf[0],
2376 pr_tmpl->pr_aptpl_buf_len); 2375 pr_tmpl->pr_aptpl_buf_len);
2377 if (!ret) { 2376 if (!ret) {
2378 pr_tmpl->pr_aptpl_active = 1; 2377 pr_tmpl->pr_aptpl_active = 1;
2379 pr_debug("SPC-3 PR: Set APTPL Bit Activated" 2378 pr_debug("SPC-3 PR: Set APTPL Bit Activated"
2380 " for REGISTER\n"); 2379 " for REGISTER\n");
2381 } 2380 }
2382 2381
2383 kfree(pr_aptpl_buf); 2382 kfree(pr_aptpl_buf);
2384 core_scsi3_put_pr_reg(pr_reg); 2383 core_scsi3_put_pr_reg(pr_reg);
2385 } 2384 }
2386 } 2385 }
2387 return 0; 2386 return 0;
2388 } 2387 }
2389 2388
2390 unsigned char *core_scsi3_pr_dump_type(int type) 2389 unsigned char *core_scsi3_pr_dump_type(int type)
2391 { 2390 {
2392 switch (type) { 2391 switch (type) {
2393 case PR_TYPE_WRITE_EXCLUSIVE: 2392 case PR_TYPE_WRITE_EXCLUSIVE:
2394 return "Write Exclusive Access"; 2393 return "Write Exclusive Access";
2395 case PR_TYPE_EXCLUSIVE_ACCESS: 2394 case PR_TYPE_EXCLUSIVE_ACCESS:
2396 return "Exclusive Access"; 2395 return "Exclusive Access";
2397 case PR_TYPE_WRITE_EXCLUSIVE_REGONLY: 2396 case PR_TYPE_WRITE_EXCLUSIVE_REGONLY:
2398 return "Write Exclusive Access, Registrants Only"; 2397 return "Write Exclusive Access, Registrants Only";
2399 case PR_TYPE_EXCLUSIVE_ACCESS_REGONLY: 2398 case PR_TYPE_EXCLUSIVE_ACCESS_REGONLY:
2400 return "Exclusive Access, Registrants Only"; 2399 return "Exclusive Access, Registrants Only";
2401 case PR_TYPE_WRITE_EXCLUSIVE_ALLREG: 2400 case PR_TYPE_WRITE_EXCLUSIVE_ALLREG:
2402 return "Write Exclusive Access, All Registrants"; 2401 return "Write Exclusive Access, All Registrants";
2403 case PR_TYPE_EXCLUSIVE_ACCESS_ALLREG: 2402 case PR_TYPE_EXCLUSIVE_ACCESS_ALLREG:
2404 return "Exclusive Access, All Registrants"; 2403 return "Exclusive Access, All Registrants";
2405 default: 2404 default:
2406 break; 2405 break;
2407 } 2406 }
2408 2407
2409 return "Unknown SPC-3 PR Type"; 2408 return "Unknown SPC-3 PR Type";
2410 } 2409 }
2411 2410
2412 static int core_scsi3_pro_reserve( 2411 static int core_scsi3_pro_reserve(
2413 struct se_cmd *cmd, 2412 struct se_cmd *cmd,
2414 struct se_device *dev, 2413 struct se_device *dev,
2415 int type, 2414 int type,
2416 int scope, 2415 int scope,
2417 u64 res_key) 2416 u64 res_key)
2418 { 2417 {
2419 struct se_session *se_sess = cmd->se_sess; 2418 struct se_session *se_sess = cmd->se_sess;
2420 struct se_dev_entry *se_deve; 2419 struct se_dev_entry *se_deve;
2421 struct se_lun *se_lun = cmd->se_lun; 2420 struct se_lun *se_lun = cmd->se_lun;
2422 struct se_portal_group *se_tpg; 2421 struct se_portal_group *se_tpg;
2423 struct t10_pr_registration *pr_reg, *pr_res_holder; 2422 struct t10_pr_registration *pr_reg, *pr_res_holder;
2424 struct t10_reservation *pr_tmpl = &dev->se_sub_dev->t10_pr; 2423 struct t10_reservation *pr_tmpl = &dev->se_sub_dev->t10_pr;
2425 char i_buf[PR_REG_ISID_ID_LEN]; 2424 char i_buf[PR_REG_ISID_ID_LEN];
2426 int ret, prf_isid; 2425 int ret, prf_isid;
2427 2426
2428 memset(i_buf, 0, PR_REG_ISID_ID_LEN); 2427 memset(i_buf, 0, PR_REG_ISID_ID_LEN);
2429 2428
2430 if (!se_sess || !se_lun) { 2429 if (!se_sess || !se_lun) {
2431 pr_err("SPC-3 PR: se_sess || struct se_lun is NULL!\n"); 2430 pr_err("SPC-3 PR: se_sess || struct se_lun is NULL!\n");
2432 cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; 2431 cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
2433 return -EINVAL; 2432 return -EINVAL;
2434 } 2433 }
2435 se_tpg = se_sess->se_tpg; 2434 se_tpg = se_sess->se_tpg;
2436 se_deve = &se_sess->se_node_acl->device_list[cmd->orig_fe_lun]; 2435 se_deve = &se_sess->se_node_acl->device_list[cmd->orig_fe_lun];
2437 /* 2436 /*
2438 * Locate the existing *pr_reg via struct se_node_acl pointers 2437 * Locate the existing *pr_reg via struct se_node_acl pointers
2439 */ 2438 */
2440 pr_reg = core_scsi3_locate_pr_reg(cmd->se_dev, se_sess->se_node_acl, 2439 pr_reg = core_scsi3_locate_pr_reg(cmd->se_dev, se_sess->se_node_acl,
2441 se_sess); 2440 se_sess);
2442 if (!pr_reg) { 2441 if (!pr_reg) {
2443 pr_err("SPC-3 PR: Unable to locate" 2442 pr_err("SPC-3 PR: Unable to locate"
2444 " PR_REGISTERED *pr_reg for RESERVE\n"); 2443 " PR_REGISTERED *pr_reg for RESERVE\n");
2445 cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; 2444 cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
2446 return -EINVAL; 2445 return -EINVAL;
2447 } 2446 }
2448 /* 2447 /*
2449 * From spc4r17 Section 5.7.9: Reserving: 2448 * From spc4r17 Section 5.7.9: Reserving:
2450 * 2449 *
2451 * An application client creates a persistent reservation by issuing 2450 * An application client creates a persistent reservation by issuing
2452 * a PERSISTENT RESERVE OUT command with RESERVE service action through 2451 * a PERSISTENT RESERVE OUT command with RESERVE service action through
2453 * a registered I_T nexus with the following parameters: 2452 * a registered I_T nexus with the following parameters:
2454 * a) RESERVATION KEY set to the value of the reservation key that is 2453 * a) RESERVATION KEY set to the value of the reservation key that is
2455 * registered with the logical unit for the I_T nexus; and 2454 * registered with the logical unit for the I_T nexus; and
2456 */ 2455 */
2457 if (res_key != pr_reg->pr_res_key) { 2456 if (res_key != pr_reg->pr_res_key) {
2458 pr_err("SPC-3 PR RESERVE: Received res_key: 0x%016Lx" 2457 pr_err("SPC-3 PR RESERVE: Received res_key: 0x%016Lx"
2459 " does not match existing SA REGISTER res_key:" 2458 " does not match existing SA REGISTER res_key:"
2460 " 0x%016Lx\n", res_key, pr_reg->pr_res_key); 2459 " 0x%016Lx\n", res_key, pr_reg->pr_res_key);
2461 core_scsi3_put_pr_reg(pr_reg); 2460 core_scsi3_put_pr_reg(pr_reg);
2462 cmd->scsi_sense_reason = TCM_RESERVATION_CONFLICT; 2461 cmd->scsi_sense_reason = TCM_RESERVATION_CONFLICT;
2463 return -EINVAL; 2462 return -EINVAL;
2464 } 2463 }
2465 /* 2464 /*
2466 * From spc4r17 Section 5.7.9: Reserving: 2465 * From spc4r17 Section 5.7.9: Reserving:
2467 * 2466 *
2468 * From above: 2467 * From above:
2469 * b) TYPE field and SCOPE field set to the persistent reservation 2468 * b) TYPE field and SCOPE field set to the persistent reservation
2470 * being created. 2469 * being created.
2471 * 2470 *
2472 * Only one persistent reservation is allowed at a time per logical unit 2471 * Only one persistent reservation is allowed at a time per logical unit
2473 * and that persistent reservation has a scope of LU_SCOPE. 2472 * and that persistent reservation has a scope of LU_SCOPE.
2474 */ 2473 */
2475 if (scope != PR_SCOPE_LU_SCOPE) { 2474 if (scope != PR_SCOPE_LU_SCOPE) {
2476 pr_err("SPC-3 PR: Illegal SCOPE: 0x%02x\n", scope); 2475 pr_err("SPC-3 PR: Illegal SCOPE: 0x%02x\n", scope);
2477 core_scsi3_put_pr_reg(pr_reg); 2476 core_scsi3_put_pr_reg(pr_reg);
2478 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST; 2477 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST;
2479 return -EINVAL; 2478 return -EINVAL;
2480 } 2479 }
2481 /* 2480 /*
2482 * See if we have an existing PR reservation holder pointer at 2481 * See if we have an existing PR reservation holder pointer at
2483 * struct se_device->dev_pr_res_holder in the form struct t10_pr_registration 2482 * struct se_device->dev_pr_res_holder in the form struct t10_pr_registration
2484 * *pr_res_holder. 2483 * *pr_res_holder.
2485 */ 2484 */
2486 spin_lock(&dev->dev_reservation_lock); 2485 spin_lock(&dev->dev_reservation_lock);
2487 pr_res_holder = dev->dev_pr_res_holder; 2486 pr_res_holder = dev->dev_pr_res_holder;
2488 if ((pr_res_holder)) { 2487 if ((pr_res_holder)) {
2489 /* 2488 /*
2490 * From spc4r17 Section 5.7.9: Reserving: 2489 * From spc4r17 Section 5.7.9: Reserving:
2491 * 2490 *
2492 * If the device server receives a PERSISTENT RESERVE OUT 2491 * If the device server receives a PERSISTENT RESERVE OUT
2493 * command from an I_T nexus other than a persistent reservation 2492 * command from an I_T nexus other than a persistent reservation
2494 * holder (see 5.7.10) that attempts to create a persistent 2493 * holder (see 5.7.10) that attempts to create a persistent
2495 * reservation when a persistent reservation already exists for 2494 * reservation when a persistent reservation already exists for
2496 * the logical unit, then the command shall be completed with 2495 * the logical unit, then the command shall be completed with
2497 * RESERVATION CONFLICT status. 2496 * RESERVATION CONFLICT status.
2498 */ 2497 */
2499 if (pr_res_holder != pr_reg) { 2498 if (pr_res_holder != pr_reg) {
2500 struct se_node_acl *pr_res_nacl = pr_res_holder->pr_reg_nacl; 2499 struct se_node_acl *pr_res_nacl = pr_res_holder->pr_reg_nacl;
2501 pr_err("SPC-3 PR: Attempted RESERVE from" 2500 pr_err("SPC-3 PR: Attempted RESERVE from"
2502 " [%s]: %s while reservation already held by" 2501 " [%s]: %s while reservation already held by"
2503 " [%s]: %s, returning RESERVATION_CONFLICT\n", 2502 " [%s]: %s, returning RESERVATION_CONFLICT\n",
2504 cmd->se_tfo->get_fabric_name(), 2503 cmd->se_tfo->get_fabric_name(),
2505 se_sess->se_node_acl->initiatorname, 2504 se_sess->se_node_acl->initiatorname,
2506 pr_res_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), 2505 pr_res_nacl->se_tpg->se_tpg_tfo->get_fabric_name(),
2507 pr_res_holder->pr_reg_nacl->initiatorname); 2506 pr_res_holder->pr_reg_nacl->initiatorname);
2508 2507
2509 spin_unlock(&dev->dev_reservation_lock); 2508 spin_unlock(&dev->dev_reservation_lock);
2510 core_scsi3_put_pr_reg(pr_reg); 2509 core_scsi3_put_pr_reg(pr_reg);
2511 cmd->scsi_sense_reason = TCM_RESERVATION_CONFLICT; 2510 cmd->scsi_sense_reason = TCM_RESERVATION_CONFLICT;
2512 return -EINVAL; 2511 return -EINVAL;
2513 } 2512 }
2514 /* 2513 /*
2515 * From spc4r17 Section 5.7.9: Reserving: 2514 * From spc4r17 Section 5.7.9: Reserving:
2516 * 2515 *
2517 * If a persistent reservation holder attempts to modify the 2516 * If a persistent reservation holder attempts to modify the
2518 * type or scope of an existing persistent reservation, the 2517 * type or scope of an existing persistent reservation, the
2519 * command shall be completed with RESERVATION CONFLICT status. 2518 * command shall be completed with RESERVATION CONFLICT status.
2520 */ 2519 */
2521 if ((pr_res_holder->pr_res_type != type) || 2520 if ((pr_res_holder->pr_res_type != type) ||
2522 (pr_res_holder->pr_res_scope != scope)) { 2521 (pr_res_holder->pr_res_scope != scope)) {
2523 struct se_node_acl *pr_res_nacl = pr_res_holder->pr_reg_nacl; 2522 struct se_node_acl *pr_res_nacl = pr_res_holder->pr_reg_nacl;
2524 pr_err("SPC-3 PR: Attempted RESERVE from" 2523 pr_err("SPC-3 PR: Attempted RESERVE from"
2525 " [%s]: %s trying to change TYPE and/or SCOPE," 2524 " [%s]: %s trying to change TYPE and/or SCOPE,"
2526 " while reservation already held by [%s]: %s," 2525 " while reservation already held by [%s]: %s,"
2527 " returning RESERVATION_CONFLICT\n", 2526 " returning RESERVATION_CONFLICT\n",
2528 cmd->se_tfo->get_fabric_name(), 2527 cmd->se_tfo->get_fabric_name(),
2529 se_sess->se_node_acl->initiatorname, 2528 se_sess->se_node_acl->initiatorname,
2530 pr_res_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), 2529 pr_res_nacl->se_tpg->se_tpg_tfo->get_fabric_name(),
2531 pr_res_holder->pr_reg_nacl->initiatorname); 2530 pr_res_holder->pr_reg_nacl->initiatorname);
2532 2531
2533 spin_unlock(&dev->dev_reservation_lock); 2532 spin_unlock(&dev->dev_reservation_lock);
2534 core_scsi3_put_pr_reg(pr_reg); 2533 core_scsi3_put_pr_reg(pr_reg);
2535 cmd->scsi_sense_reason = TCM_RESERVATION_CONFLICT; 2534 cmd->scsi_sense_reason = TCM_RESERVATION_CONFLICT;
2536 return -EINVAL; 2535 return -EINVAL;
2537 } 2536 }
2538 /* 2537 /*
2539 * From spc4r17 Section 5.7.9: Reserving: 2538 * From spc4r17 Section 5.7.9: Reserving:
2540 * 2539 *
2541 * If the device server receives a PERSISTENT RESERVE OUT 2540 * If the device server receives a PERSISTENT RESERVE OUT
2542 * command with RESERVE service action where the TYPE field and 2541 * command with RESERVE service action where the TYPE field and
2543 * the SCOPE field contain the same values as the existing type 2542 * the SCOPE field contain the same values as the existing type
2544 * and scope from a persistent reservation holder, it shall not 2543 * and scope from a persistent reservation holder, it shall not
2545 * make any change to the existing persistent reservation and 2544 * make any change to the existing persistent reservation and
2546 * shall completethe command with GOOD status. 2545 * shall completethe command with GOOD status.
2547 */ 2546 */
2548 spin_unlock(&dev->dev_reservation_lock); 2547 spin_unlock(&dev->dev_reservation_lock);
2549 core_scsi3_put_pr_reg(pr_reg); 2548 core_scsi3_put_pr_reg(pr_reg);
2550 return 0; 2549 return 0;
2551 } 2550 }
2552 /* 2551 /*
2553 * Otherwise, our *pr_reg becomes the PR reservation holder for said 2552 * Otherwise, our *pr_reg becomes the PR reservation holder for said
2554 * TYPE/SCOPE. Also set the received scope and type in *pr_reg. 2553 * TYPE/SCOPE. Also set the received scope and type in *pr_reg.
2555 */ 2554 */
2556 pr_reg->pr_res_scope = scope; 2555 pr_reg->pr_res_scope = scope;
2557 pr_reg->pr_res_type = type; 2556 pr_reg->pr_res_type = type;
2558 pr_reg->pr_res_holder = 1; 2557 pr_reg->pr_res_holder = 1;
2559 dev->dev_pr_res_holder = pr_reg; 2558 dev->dev_pr_res_holder = pr_reg;
2560 prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0], 2559 prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0],
2561 PR_REG_ISID_ID_LEN); 2560 PR_REG_ISID_ID_LEN);
2562 2561
2563 pr_debug("SPC-3 PR [%s] Service Action: RESERVE created new" 2562 pr_debug("SPC-3 PR [%s] Service Action: RESERVE created new"
2564 " reservation holder TYPE: %s ALL_TG_PT: %d\n", 2563 " reservation holder TYPE: %s ALL_TG_PT: %d\n",
2565 cmd->se_tfo->get_fabric_name(), core_scsi3_pr_dump_type(type), 2564 cmd->se_tfo->get_fabric_name(), core_scsi3_pr_dump_type(type),
2566 (pr_reg->pr_reg_all_tg_pt) ? 1 : 0); 2565 (pr_reg->pr_reg_all_tg_pt) ? 1 : 0);
2567 pr_debug("SPC-3 PR [%s] RESERVE Node: %s%s\n", 2566 pr_debug("SPC-3 PR [%s] RESERVE Node: %s%s\n",
2568 cmd->se_tfo->get_fabric_name(), 2567 cmd->se_tfo->get_fabric_name(),
2569 se_sess->se_node_acl->initiatorname, 2568 se_sess->se_node_acl->initiatorname,
2570 (prf_isid) ? &i_buf[0] : ""); 2569 (prf_isid) ? &i_buf[0] : "");
2571 spin_unlock(&dev->dev_reservation_lock); 2570 spin_unlock(&dev->dev_reservation_lock);
2572 2571
2573 if (pr_tmpl->pr_aptpl_active) { 2572 if (pr_tmpl->pr_aptpl_active) {
2574 ret = core_scsi3_update_and_write_aptpl(cmd->se_dev, 2573 ret = core_scsi3_update_and_write_aptpl(cmd->se_dev,
2575 &pr_reg->pr_aptpl_buf[0], 2574 &pr_reg->pr_aptpl_buf[0],
2576 pr_tmpl->pr_aptpl_buf_len); 2575 pr_tmpl->pr_aptpl_buf_len);
2577 if (!ret) 2576 if (!ret)
2578 pr_debug("SPC-3 PR: Updated APTPL metadata" 2577 pr_debug("SPC-3 PR: Updated APTPL metadata"
2579 " for RESERVE\n"); 2578 " for RESERVE\n");
2580 } 2579 }
2581 2580
2582 core_scsi3_put_pr_reg(pr_reg); 2581 core_scsi3_put_pr_reg(pr_reg);
2583 return 0; 2582 return 0;
2584 } 2583 }
2585 2584
2586 static int core_scsi3_emulate_pro_reserve( 2585 static int core_scsi3_emulate_pro_reserve(
2587 struct se_cmd *cmd, 2586 struct se_cmd *cmd,
2588 int type, 2587 int type,
2589 int scope, 2588 int scope,
2590 u64 res_key) 2589 u64 res_key)
2591 { 2590 {
2592 struct se_device *dev = cmd->se_dev; 2591 struct se_device *dev = cmd->se_dev;
2593 int ret = 0; 2592 int ret = 0;
2594 2593
2595 switch (type) { 2594 switch (type) {
2596 case PR_TYPE_WRITE_EXCLUSIVE: 2595 case PR_TYPE_WRITE_EXCLUSIVE:
2597 case PR_TYPE_EXCLUSIVE_ACCESS: 2596 case PR_TYPE_EXCLUSIVE_ACCESS:
2598 case PR_TYPE_WRITE_EXCLUSIVE_REGONLY: 2597 case PR_TYPE_WRITE_EXCLUSIVE_REGONLY:
2599 case PR_TYPE_EXCLUSIVE_ACCESS_REGONLY: 2598 case PR_TYPE_EXCLUSIVE_ACCESS_REGONLY:
2600 case PR_TYPE_WRITE_EXCLUSIVE_ALLREG: 2599 case PR_TYPE_WRITE_EXCLUSIVE_ALLREG:
2601 case PR_TYPE_EXCLUSIVE_ACCESS_ALLREG: 2600 case PR_TYPE_EXCLUSIVE_ACCESS_ALLREG:
2602 ret = core_scsi3_pro_reserve(cmd, dev, type, scope, res_key); 2601 ret = core_scsi3_pro_reserve(cmd, dev, type, scope, res_key);
2603 break; 2602 break;
2604 default: 2603 default:
2605 pr_err("SPC-3 PR: Unknown Service Action RESERVE Type:" 2604 pr_err("SPC-3 PR: Unknown Service Action RESERVE Type:"
2606 " 0x%02x\n", type); 2605 " 0x%02x\n", type);
2607 cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD; 2606 cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD;
2608 return -EINVAL; 2607 return -EINVAL;
2609 } 2608 }
2610 2609
2611 return ret; 2610 return ret;
2612 } 2611 }
2613 2612
2614 /* 2613 /*
2615 * Called with struct se_device->dev_reservation_lock held. 2614 * Called with struct se_device->dev_reservation_lock held.
2616 */ 2615 */
2617 static void __core_scsi3_complete_pro_release( 2616 static void __core_scsi3_complete_pro_release(
2618 struct se_device *dev, 2617 struct se_device *dev,
2619 struct se_node_acl *se_nacl, 2618 struct se_node_acl *se_nacl,
2620 struct t10_pr_registration *pr_reg, 2619 struct t10_pr_registration *pr_reg,
2621 int explict) 2620 int explict)
2622 { 2621 {
2623 struct target_core_fabric_ops *tfo = se_nacl->se_tpg->se_tpg_tfo; 2622 struct target_core_fabric_ops *tfo = se_nacl->se_tpg->se_tpg_tfo;
2624 char i_buf[PR_REG_ISID_ID_LEN]; 2623 char i_buf[PR_REG_ISID_ID_LEN];
2625 int prf_isid; 2624 int prf_isid;
2626 2625
2627 memset(i_buf, 0, PR_REG_ISID_ID_LEN); 2626 memset(i_buf, 0, PR_REG_ISID_ID_LEN);
2628 prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0], 2627 prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0],
2629 PR_REG_ISID_ID_LEN); 2628 PR_REG_ISID_ID_LEN);
2630 /* 2629 /*
2631 * Go ahead and release the current PR reservation holder. 2630 * Go ahead and release the current PR reservation holder.
2632 */ 2631 */
2633 dev->dev_pr_res_holder = NULL; 2632 dev->dev_pr_res_holder = NULL;
2634 2633
2635 pr_debug("SPC-3 PR [%s] Service Action: %s RELEASE cleared" 2634 pr_debug("SPC-3 PR [%s] Service Action: %s RELEASE cleared"
2636 " reservation holder TYPE: %s ALL_TG_PT: %d\n", 2635 " reservation holder TYPE: %s ALL_TG_PT: %d\n",
2637 tfo->get_fabric_name(), (explict) ? "explict" : "implict", 2636 tfo->get_fabric_name(), (explict) ? "explict" : "implict",
2638 core_scsi3_pr_dump_type(pr_reg->pr_res_type), 2637 core_scsi3_pr_dump_type(pr_reg->pr_res_type),
2639 (pr_reg->pr_reg_all_tg_pt) ? 1 : 0); 2638 (pr_reg->pr_reg_all_tg_pt) ? 1 : 0);
2640 pr_debug("SPC-3 PR [%s] RELEASE Node: %s%s\n", 2639 pr_debug("SPC-3 PR [%s] RELEASE Node: %s%s\n",
2641 tfo->get_fabric_name(), se_nacl->initiatorname, 2640 tfo->get_fabric_name(), se_nacl->initiatorname,
2642 (prf_isid) ? &i_buf[0] : ""); 2641 (prf_isid) ? &i_buf[0] : "");
2643 /* 2642 /*
2644 * Clear TYPE and SCOPE for the next PROUT Service Action: RESERVE 2643 * Clear TYPE and SCOPE for the next PROUT Service Action: RESERVE
2645 */ 2644 */
2646 pr_reg->pr_res_holder = pr_reg->pr_res_type = pr_reg->pr_res_scope = 0; 2645 pr_reg->pr_res_holder = pr_reg->pr_res_type = pr_reg->pr_res_scope = 0;
2647 } 2646 }
2648 2647
2649 static int core_scsi3_emulate_pro_release( 2648 static int core_scsi3_emulate_pro_release(
2650 struct se_cmd *cmd, 2649 struct se_cmd *cmd,
2651 int type, 2650 int type,
2652 int scope, 2651 int scope,
2653 u64 res_key) 2652 u64 res_key)
2654 { 2653 {
2655 struct se_device *dev = cmd->se_dev; 2654 struct se_device *dev = cmd->se_dev;
2656 struct se_session *se_sess = cmd->se_sess; 2655 struct se_session *se_sess = cmd->se_sess;
2657 struct se_lun *se_lun = cmd->se_lun; 2656 struct se_lun *se_lun = cmd->se_lun;
2658 struct t10_pr_registration *pr_reg, *pr_reg_p, *pr_res_holder; 2657 struct t10_pr_registration *pr_reg, *pr_reg_p, *pr_res_holder;
2659 struct t10_reservation *pr_tmpl = &dev->se_sub_dev->t10_pr; 2658 struct t10_reservation *pr_tmpl = &dev->se_sub_dev->t10_pr;
2660 int ret, all_reg = 0; 2659 int ret, all_reg = 0;
2661 2660
2662 if (!se_sess || !se_lun) { 2661 if (!se_sess || !se_lun) {
2663 pr_err("SPC-3 PR: se_sess || struct se_lun is NULL!\n"); 2662 pr_err("SPC-3 PR: se_sess || struct se_lun is NULL!\n");
2664 cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; 2663 cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
2665 return -EINVAL; 2664 return -EINVAL;
2666 } 2665 }
2667 /* 2666 /*
2668 * Locate the existing *pr_reg via struct se_node_acl pointers 2667 * Locate the existing *pr_reg via struct se_node_acl pointers
2669 */ 2668 */
2670 pr_reg = core_scsi3_locate_pr_reg(dev, se_sess->se_node_acl, se_sess); 2669 pr_reg = core_scsi3_locate_pr_reg(dev, se_sess->se_node_acl, se_sess);
2671 if (!pr_reg) { 2670 if (!pr_reg) {
2672 pr_err("SPC-3 PR: Unable to locate" 2671 pr_err("SPC-3 PR: Unable to locate"
2673 " PR_REGISTERED *pr_reg for RELEASE\n"); 2672 " PR_REGISTERED *pr_reg for RELEASE\n");
2674 cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; 2673 cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
2675 return -EINVAL; 2674 return -EINVAL;
2676 } 2675 }
2677 /* 2676 /*
2678 * From spc4r17 Section 5.7.11.2 Releasing: 2677 * From spc4r17 Section 5.7.11.2 Releasing:
2679 * 2678 *
2680 * If there is no persistent reservation or in response to a persistent 2679 * If there is no persistent reservation or in response to a persistent
2681 * reservation release request from a registered I_T nexus that is not a 2680 * reservation release request from a registered I_T nexus that is not a
2682 * persistent reservation holder (see 5.7.10), the device server shall 2681 * persistent reservation holder (see 5.7.10), the device server shall
2683 * do the following: 2682 * do the following:
2684 * 2683 *
2685 * a) Not release the persistent reservation, if any; 2684 * a) Not release the persistent reservation, if any;
2686 * b) Not remove any registrations; and 2685 * b) Not remove any registrations; and
2687 * c) Complete the command with GOOD status. 2686 * c) Complete the command with GOOD status.
2688 */ 2687 */
2689 spin_lock(&dev->dev_reservation_lock); 2688 spin_lock(&dev->dev_reservation_lock);
2690 pr_res_holder = dev->dev_pr_res_holder; 2689 pr_res_holder = dev->dev_pr_res_holder;
2691 if (!pr_res_holder) { 2690 if (!pr_res_holder) {
2692 /* 2691 /*
2693 * No persistent reservation, return GOOD status. 2692 * No persistent reservation, return GOOD status.
2694 */ 2693 */
2695 spin_unlock(&dev->dev_reservation_lock); 2694 spin_unlock(&dev->dev_reservation_lock);
2696 core_scsi3_put_pr_reg(pr_reg); 2695 core_scsi3_put_pr_reg(pr_reg);
2697 return 0; 2696 return 0;
2698 } 2697 }
2699 if ((pr_res_holder->pr_res_type == PR_TYPE_WRITE_EXCLUSIVE_ALLREG) || 2698 if ((pr_res_holder->pr_res_type == PR_TYPE_WRITE_EXCLUSIVE_ALLREG) ||
2700 (pr_res_holder->pr_res_type == PR_TYPE_EXCLUSIVE_ACCESS_ALLREG)) 2699 (pr_res_holder->pr_res_type == PR_TYPE_EXCLUSIVE_ACCESS_ALLREG))
2701 all_reg = 1; 2700 all_reg = 1;
2702 2701
2703 if ((all_reg == 0) && (pr_res_holder != pr_reg)) { 2702 if ((all_reg == 0) && (pr_res_holder != pr_reg)) {
2704 /* 2703 /*
2705 * Non 'All Registrants' PR Type cases.. 2704 * Non 'All Registrants' PR Type cases..
2706 * Release request from a registered I_T nexus that is not a 2705 * Release request from a registered I_T nexus that is not a
2707 * persistent reservation holder. return GOOD status. 2706 * persistent reservation holder. return GOOD status.
2708 */ 2707 */
2709 spin_unlock(&dev->dev_reservation_lock); 2708 spin_unlock(&dev->dev_reservation_lock);
2710 core_scsi3_put_pr_reg(pr_reg); 2709 core_scsi3_put_pr_reg(pr_reg);
2711 return 0; 2710 return 0;
2712 } 2711 }
2713 /* 2712 /*
2714 * From spc4r17 Section 5.7.11.2 Releasing: 2713 * From spc4r17 Section 5.7.11.2 Releasing:
2715 * 2714 *
2716 * Only the persistent reservation holder (see 5.7.10) is allowed to 2715 * Only the persistent reservation holder (see 5.7.10) is allowed to
2717 * release a persistent reservation. 2716 * release a persistent reservation.
2718 * 2717 *
2719 * An application client releases the persistent reservation by issuing 2718 * An application client releases the persistent reservation by issuing
2720 * a PERSISTENT RESERVE OUT command with RELEASE service action through 2719 * a PERSISTENT RESERVE OUT command with RELEASE service action through
2721 * an I_T nexus that is a persistent reservation holder with the 2720 * an I_T nexus that is a persistent reservation holder with the
2722 * following parameters: 2721 * following parameters:
2723 * 2722 *
2724 * a) RESERVATION KEY field set to the value of the reservation key 2723 * a) RESERVATION KEY field set to the value of the reservation key
2725 * that is registered with the logical unit for the I_T nexus; 2724 * that is registered with the logical unit for the I_T nexus;
2726 */ 2725 */
2727 if (res_key != pr_reg->pr_res_key) { 2726 if (res_key != pr_reg->pr_res_key) {
2728 pr_err("SPC-3 PR RELEASE: Received res_key: 0x%016Lx" 2727 pr_err("SPC-3 PR RELEASE: Received res_key: 0x%016Lx"
2729 " does not match existing SA REGISTER res_key:" 2728 " does not match existing SA REGISTER res_key:"
2730 " 0x%016Lx\n", res_key, pr_reg->pr_res_key); 2729 " 0x%016Lx\n", res_key, pr_reg->pr_res_key);
2731 spin_unlock(&dev->dev_reservation_lock); 2730 spin_unlock(&dev->dev_reservation_lock);
2732 core_scsi3_put_pr_reg(pr_reg); 2731 core_scsi3_put_pr_reg(pr_reg);
2733 cmd->scsi_sense_reason = TCM_RESERVATION_CONFLICT; 2732 cmd->scsi_sense_reason = TCM_RESERVATION_CONFLICT;
2734 return -EINVAL; 2733 return -EINVAL;
2735 } 2734 }
2736 /* 2735 /*
2737 * From spc4r17 Section 5.7.11.2 Releasing and above: 2736 * From spc4r17 Section 5.7.11.2 Releasing and above:
2738 * 2737 *
2739 * b) TYPE field and SCOPE field set to match the persistent 2738 * b) TYPE field and SCOPE field set to match the persistent
2740 * reservation being released. 2739 * reservation being released.
2741 */ 2740 */
2742 if ((pr_res_holder->pr_res_type != type) || 2741 if ((pr_res_holder->pr_res_type != type) ||
2743 (pr_res_holder->pr_res_scope != scope)) { 2742 (pr_res_holder->pr_res_scope != scope)) {
2744 struct se_node_acl *pr_res_nacl = pr_res_holder->pr_reg_nacl; 2743 struct se_node_acl *pr_res_nacl = pr_res_holder->pr_reg_nacl;
2745 pr_err("SPC-3 PR RELEASE: Attempted to release" 2744 pr_err("SPC-3 PR RELEASE: Attempted to release"
2746 " reservation from [%s]: %s with different TYPE " 2745 " reservation from [%s]: %s with different TYPE "
2747 "and/or SCOPE while reservation already held by" 2746 "and/or SCOPE while reservation already held by"
2748 " [%s]: %s, returning RESERVATION_CONFLICT\n", 2747 " [%s]: %s, returning RESERVATION_CONFLICT\n",
2749 cmd->se_tfo->get_fabric_name(), 2748 cmd->se_tfo->get_fabric_name(),
2750 se_sess->se_node_acl->initiatorname, 2749 se_sess->se_node_acl->initiatorname,
2751 pr_res_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), 2750 pr_res_nacl->se_tpg->se_tpg_tfo->get_fabric_name(),
2752 pr_res_holder->pr_reg_nacl->initiatorname); 2751 pr_res_holder->pr_reg_nacl->initiatorname);
2753 2752
2754 spin_unlock(&dev->dev_reservation_lock); 2753 spin_unlock(&dev->dev_reservation_lock);
2755 core_scsi3_put_pr_reg(pr_reg); 2754 core_scsi3_put_pr_reg(pr_reg);
2756 cmd->scsi_sense_reason = TCM_RESERVATION_CONFLICT; 2755 cmd->scsi_sense_reason = TCM_RESERVATION_CONFLICT;
2757 return -EINVAL; 2756 return -EINVAL;
2758 } 2757 }
2759 /* 2758 /*
2760 * In response to a persistent reservation release request from the 2759 * In response to a persistent reservation release request from the
2761 * persistent reservation holder the device server shall perform a 2760 * persistent reservation holder the device server shall perform a
2762 * release by doing the following as an uninterrupted series of actions: 2761 * release by doing the following as an uninterrupted series of actions:
2763 * a) Release the persistent reservation; 2762 * a) Release the persistent reservation;
2764 * b) Not remove any registration(s); 2763 * b) Not remove any registration(s);
2765 * c) If the released persistent reservation is a registrants only type 2764 * c) If the released persistent reservation is a registrants only type
2766 * or all registrants type persistent reservation, 2765 * or all registrants type persistent reservation,
2767 * the device server shall establish a unit attention condition for 2766 * the device server shall establish a unit attention condition for
2768 * the initiator port associated with every regis- 2767 * the initiator port associated with every regis-
2769 * tered I_T nexus other than I_T nexus on which the PERSISTENT 2768 * tered I_T nexus other than I_T nexus on which the PERSISTENT
2770 * RESERVE OUT command with RELEASE service action was received, 2769 * RESERVE OUT command with RELEASE service action was received,
2771 * with the additional sense code set to RESERVATIONS RELEASED; and 2770 * with the additional sense code set to RESERVATIONS RELEASED; and
2772 * d) If the persistent reservation is of any other type, the device 2771 * d) If the persistent reservation is of any other type, the device
2773 * server shall not establish a unit attention condition. 2772 * server shall not establish a unit attention condition.
2774 */ 2773 */
2775 __core_scsi3_complete_pro_release(dev, se_sess->se_node_acl, 2774 __core_scsi3_complete_pro_release(dev, se_sess->se_node_acl,
2776 pr_reg, 1); 2775 pr_reg, 1);
2777 2776
2778 spin_unlock(&dev->dev_reservation_lock); 2777 spin_unlock(&dev->dev_reservation_lock);
2779 2778
2780 if ((type != PR_TYPE_WRITE_EXCLUSIVE_REGONLY) && 2779 if ((type != PR_TYPE_WRITE_EXCLUSIVE_REGONLY) &&
2781 (type != PR_TYPE_EXCLUSIVE_ACCESS_REGONLY) && 2780 (type != PR_TYPE_EXCLUSIVE_ACCESS_REGONLY) &&
2782 (type != PR_TYPE_WRITE_EXCLUSIVE_ALLREG) && 2781 (type != PR_TYPE_WRITE_EXCLUSIVE_ALLREG) &&
2783 (type != PR_TYPE_EXCLUSIVE_ACCESS_ALLREG)) { 2782 (type != PR_TYPE_EXCLUSIVE_ACCESS_ALLREG)) {
2784 /* 2783 /*
2785 * If no UNIT ATTENTION conditions will be established for 2784 * If no UNIT ATTENTION conditions will be established for
2786 * PR_TYPE_WRITE_EXCLUSIVE or PR_TYPE_EXCLUSIVE_ACCESS 2785 * PR_TYPE_WRITE_EXCLUSIVE or PR_TYPE_EXCLUSIVE_ACCESS
2787 * go ahead and check for APTPL=1 update+write below 2786 * go ahead and check for APTPL=1 update+write below
2788 */ 2787 */
2789 goto write_aptpl; 2788 goto write_aptpl;
2790 } 2789 }
2791 2790
2792 spin_lock(&pr_tmpl->registration_lock); 2791 spin_lock(&pr_tmpl->registration_lock);
2793 list_for_each_entry(pr_reg_p, &pr_tmpl->registration_list, 2792 list_for_each_entry(pr_reg_p, &pr_tmpl->registration_list,
2794 pr_reg_list) { 2793 pr_reg_list) {
2795 /* 2794 /*
2796 * Do not establish a UNIT ATTENTION condition 2795 * Do not establish a UNIT ATTENTION condition
2797 * for the calling I_T Nexus 2796 * for the calling I_T Nexus
2798 */ 2797 */
2799 if (pr_reg_p == pr_reg) 2798 if (pr_reg_p == pr_reg)
2800 continue; 2799 continue;
2801 2800
2802 core_scsi3_ua_allocate(pr_reg_p->pr_reg_nacl, 2801 core_scsi3_ua_allocate(pr_reg_p->pr_reg_nacl,
2803 pr_reg_p->pr_res_mapped_lun, 2802 pr_reg_p->pr_res_mapped_lun,
2804 0x2A, ASCQ_2AH_RESERVATIONS_RELEASED); 2803 0x2A, ASCQ_2AH_RESERVATIONS_RELEASED);
2805 } 2804 }
2806 spin_unlock(&pr_tmpl->registration_lock); 2805 spin_unlock(&pr_tmpl->registration_lock);
2807 2806
2808 write_aptpl: 2807 write_aptpl:
2809 if (pr_tmpl->pr_aptpl_active) { 2808 if (pr_tmpl->pr_aptpl_active) {
2810 ret = core_scsi3_update_and_write_aptpl(cmd->se_dev, 2809 ret = core_scsi3_update_and_write_aptpl(cmd->se_dev,
2811 &pr_reg->pr_aptpl_buf[0], 2810 &pr_reg->pr_aptpl_buf[0],
2812 pr_tmpl->pr_aptpl_buf_len); 2811 pr_tmpl->pr_aptpl_buf_len);
2813 if (!ret) 2812 if (!ret)
2814 pr_debug("SPC-3 PR: Updated APTPL metadata for RELEASE\n"); 2813 pr_debug("SPC-3 PR: Updated APTPL metadata for RELEASE\n");
2815 } 2814 }
2816 2815
2817 core_scsi3_put_pr_reg(pr_reg); 2816 core_scsi3_put_pr_reg(pr_reg);
2818 return 0; 2817 return 0;
2819 } 2818 }
2820 2819
2821 static int core_scsi3_emulate_pro_clear( 2820 static int core_scsi3_emulate_pro_clear(
2822 struct se_cmd *cmd, 2821 struct se_cmd *cmd,
2823 u64 res_key) 2822 u64 res_key)
2824 { 2823 {
2825 struct se_device *dev = cmd->se_dev; 2824 struct se_device *dev = cmd->se_dev;
2826 struct se_node_acl *pr_reg_nacl; 2825 struct se_node_acl *pr_reg_nacl;
2827 struct se_session *se_sess = cmd->se_sess; 2826 struct se_session *se_sess = cmd->se_sess;
2828 struct t10_reservation *pr_tmpl = &dev->se_sub_dev->t10_pr; 2827 struct t10_reservation *pr_tmpl = &dev->se_sub_dev->t10_pr;
2829 struct t10_pr_registration *pr_reg, *pr_reg_tmp, *pr_reg_n, *pr_res_holder; 2828 struct t10_pr_registration *pr_reg, *pr_reg_tmp, *pr_reg_n, *pr_res_holder;
2830 u32 pr_res_mapped_lun = 0; 2829 u32 pr_res_mapped_lun = 0;
2831 int calling_it_nexus = 0; 2830 int calling_it_nexus = 0;
2832 /* 2831 /*
2833 * Locate the existing *pr_reg via struct se_node_acl pointers 2832 * Locate the existing *pr_reg via struct se_node_acl pointers
2834 */ 2833 */
2835 pr_reg_n = core_scsi3_locate_pr_reg(cmd->se_dev, 2834 pr_reg_n = core_scsi3_locate_pr_reg(cmd->se_dev,
2836 se_sess->se_node_acl, se_sess); 2835 se_sess->se_node_acl, se_sess);
2837 if (!pr_reg_n) { 2836 if (!pr_reg_n) {
2838 pr_err("SPC-3 PR: Unable to locate" 2837 pr_err("SPC-3 PR: Unable to locate"
2839 " PR_REGISTERED *pr_reg for CLEAR\n"); 2838 " PR_REGISTERED *pr_reg for CLEAR\n");
2840 cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; 2839 cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
2841 return -EINVAL; 2840 return -EINVAL;
2842 } 2841 }
2843 /* 2842 /*
2844 * From spc4r17 section 5.7.11.6, Clearing: 2843 * From spc4r17 section 5.7.11.6, Clearing:
2845 * 2844 *
2846 * Any application client may release the persistent reservation and 2845 * Any application client may release the persistent reservation and
2847 * remove all registrations from a device server by issuing a 2846 * remove all registrations from a device server by issuing a
2848 * PERSISTENT RESERVE OUT command with CLEAR service action through a 2847 * PERSISTENT RESERVE OUT command with CLEAR service action through a
2849 * registered I_T nexus with the following parameter: 2848 * registered I_T nexus with the following parameter:
2850 * 2849 *
2851 * a) RESERVATION KEY field set to the value of the reservation key 2850 * a) RESERVATION KEY field set to the value of the reservation key
2852 * that is registered with the logical unit for the I_T nexus. 2851 * that is registered with the logical unit for the I_T nexus.
2853 */ 2852 */
2854 if (res_key != pr_reg_n->pr_res_key) { 2853 if (res_key != pr_reg_n->pr_res_key) {
2855 pr_err("SPC-3 PR REGISTER: Received" 2854 pr_err("SPC-3 PR REGISTER: Received"
2856 " res_key: 0x%016Lx does not match" 2855 " res_key: 0x%016Lx does not match"
2857 " existing SA REGISTER res_key:" 2856 " existing SA REGISTER res_key:"
2858 " 0x%016Lx\n", res_key, pr_reg_n->pr_res_key); 2857 " 0x%016Lx\n", res_key, pr_reg_n->pr_res_key);
2859 core_scsi3_put_pr_reg(pr_reg_n); 2858 core_scsi3_put_pr_reg(pr_reg_n);
2860 cmd->scsi_sense_reason = TCM_RESERVATION_CONFLICT; 2859 cmd->scsi_sense_reason = TCM_RESERVATION_CONFLICT;
2861 return -EINVAL; 2860 return -EINVAL;
2862 } 2861 }
2863 /* 2862 /*
2864 * a) Release the persistent reservation, if any; 2863 * a) Release the persistent reservation, if any;
2865 */ 2864 */
2866 spin_lock(&dev->dev_reservation_lock); 2865 spin_lock(&dev->dev_reservation_lock);
2867 pr_res_holder = dev->dev_pr_res_holder; 2866 pr_res_holder = dev->dev_pr_res_holder;
2868 if (pr_res_holder) { 2867 if (pr_res_holder) {
2869 struct se_node_acl *pr_res_nacl = pr_res_holder->pr_reg_nacl; 2868 struct se_node_acl *pr_res_nacl = pr_res_holder->pr_reg_nacl;
2870 __core_scsi3_complete_pro_release(dev, pr_res_nacl, 2869 __core_scsi3_complete_pro_release(dev, pr_res_nacl,
2871 pr_res_holder, 0); 2870 pr_res_holder, 0);
2872 } 2871 }
2873 spin_unlock(&dev->dev_reservation_lock); 2872 spin_unlock(&dev->dev_reservation_lock);
2874 /* 2873 /*
2875 * b) Remove all registration(s) (see spc4r17 5.7.7); 2874 * b) Remove all registration(s) (see spc4r17 5.7.7);
2876 */ 2875 */
2877 spin_lock(&pr_tmpl->registration_lock); 2876 spin_lock(&pr_tmpl->registration_lock);
2878 list_for_each_entry_safe(pr_reg, pr_reg_tmp, 2877 list_for_each_entry_safe(pr_reg, pr_reg_tmp,
2879 &pr_tmpl->registration_list, pr_reg_list) { 2878 &pr_tmpl->registration_list, pr_reg_list) {
2880 2879
2881 calling_it_nexus = (pr_reg_n == pr_reg) ? 1 : 0; 2880 calling_it_nexus = (pr_reg_n == pr_reg) ? 1 : 0;
2882 pr_reg_nacl = pr_reg->pr_reg_nacl; 2881 pr_reg_nacl = pr_reg->pr_reg_nacl;
2883 pr_res_mapped_lun = pr_reg->pr_res_mapped_lun; 2882 pr_res_mapped_lun = pr_reg->pr_res_mapped_lun;
2884 __core_scsi3_free_registration(dev, pr_reg, NULL, 2883 __core_scsi3_free_registration(dev, pr_reg, NULL,
2885 calling_it_nexus); 2884 calling_it_nexus);
2886 /* 2885 /*
2887 * e) Establish a unit attention condition for the initiator 2886 * e) Establish a unit attention condition for the initiator
2888 * port associated with every registered I_T nexus other 2887 * port associated with every registered I_T nexus other
2889 * than the I_T nexus on which the PERSISTENT RESERVE OUT 2888 * than the I_T nexus on which the PERSISTENT RESERVE OUT
2890 * command with CLEAR service action was received, with the 2889 * command with CLEAR service action was received, with the
2891 * additional sense code set to RESERVATIONS PREEMPTED. 2890 * additional sense code set to RESERVATIONS PREEMPTED.
2892 */ 2891 */
2893 if (!calling_it_nexus) 2892 if (!calling_it_nexus)
2894 core_scsi3_ua_allocate(pr_reg_nacl, pr_res_mapped_lun, 2893 core_scsi3_ua_allocate(pr_reg_nacl, pr_res_mapped_lun,
2895 0x2A, ASCQ_2AH_RESERVATIONS_PREEMPTED); 2894 0x2A, ASCQ_2AH_RESERVATIONS_PREEMPTED);
2896 } 2895 }
2897 spin_unlock(&pr_tmpl->registration_lock); 2896 spin_unlock(&pr_tmpl->registration_lock);
2898 2897
2899 pr_debug("SPC-3 PR [%s] Service Action: CLEAR complete\n", 2898 pr_debug("SPC-3 PR [%s] Service Action: CLEAR complete\n",
2900 cmd->se_tfo->get_fabric_name()); 2899 cmd->se_tfo->get_fabric_name());
2901 2900
2902 if (pr_tmpl->pr_aptpl_active) { 2901 if (pr_tmpl->pr_aptpl_active) {
2903 core_scsi3_update_and_write_aptpl(cmd->se_dev, NULL, 0); 2902 core_scsi3_update_and_write_aptpl(cmd->se_dev, NULL, 0);
2904 pr_debug("SPC-3 PR: Updated APTPL metadata" 2903 pr_debug("SPC-3 PR: Updated APTPL metadata"
2905 " for CLEAR\n"); 2904 " for CLEAR\n");
2906 } 2905 }
2907 2906
2908 core_scsi3_pr_generation(dev); 2907 core_scsi3_pr_generation(dev);
2909 return 0; 2908 return 0;
2910 } 2909 }
2911 2910
2912 /* 2911 /*
2913 * Called with struct se_device->dev_reservation_lock held. 2912 * Called with struct se_device->dev_reservation_lock held.
2914 */ 2913 */
2915 static void __core_scsi3_complete_pro_preempt( 2914 static void __core_scsi3_complete_pro_preempt(
2916 struct se_device *dev, 2915 struct se_device *dev,
2917 struct t10_pr_registration *pr_reg, 2916 struct t10_pr_registration *pr_reg,
2918 struct list_head *preempt_and_abort_list, 2917 struct list_head *preempt_and_abort_list,
2919 int type, 2918 int type,
2920 int scope, 2919 int scope,
2921 int abort) 2920 int abort)
2922 { 2921 {
2923 struct se_node_acl *nacl = pr_reg->pr_reg_nacl; 2922 struct se_node_acl *nacl = pr_reg->pr_reg_nacl;
2924 struct target_core_fabric_ops *tfo = nacl->se_tpg->se_tpg_tfo; 2923 struct target_core_fabric_ops *tfo = nacl->se_tpg->se_tpg_tfo;
2925 char i_buf[PR_REG_ISID_ID_LEN]; 2924 char i_buf[PR_REG_ISID_ID_LEN];
2926 int prf_isid; 2925 int prf_isid;
2927 2926
2928 memset(i_buf, 0, PR_REG_ISID_ID_LEN); 2927 memset(i_buf, 0, PR_REG_ISID_ID_LEN);
2929 prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0], 2928 prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0],
2930 PR_REG_ISID_ID_LEN); 2929 PR_REG_ISID_ID_LEN);
2931 /* 2930 /*
2932 * Do an implict RELEASE of the existing reservation. 2931 * Do an implict RELEASE of the existing reservation.
2933 */ 2932 */
2934 if (dev->dev_pr_res_holder) 2933 if (dev->dev_pr_res_holder)
2935 __core_scsi3_complete_pro_release(dev, nacl, 2934 __core_scsi3_complete_pro_release(dev, nacl,
2936 dev->dev_pr_res_holder, 0); 2935 dev->dev_pr_res_holder, 0);
2937 2936
2938 dev->dev_pr_res_holder = pr_reg; 2937 dev->dev_pr_res_holder = pr_reg;
2939 pr_reg->pr_res_holder = 1; 2938 pr_reg->pr_res_holder = 1;
2940 pr_reg->pr_res_type = type; 2939 pr_reg->pr_res_type = type;
2941 pr_reg->pr_res_scope = scope; 2940 pr_reg->pr_res_scope = scope;
2942 2941
2943 pr_debug("SPC-3 PR [%s] Service Action: PREEMPT%s created new" 2942 pr_debug("SPC-3 PR [%s] Service Action: PREEMPT%s created new"
2944 " reservation holder TYPE: %s ALL_TG_PT: %d\n", 2943 " reservation holder TYPE: %s ALL_TG_PT: %d\n",
2945 tfo->get_fabric_name(), (abort) ? "_AND_ABORT" : "", 2944 tfo->get_fabric_name(), (abort) ? "_AND_ABORT" : "",
2946 core_scsi3_pr_dump_type(type), 2945 core_scsi3_pr_dump_type(type),
2947 (pr_reg->pr_reg_all_tg_pt) ? 1 : 0); 2946 (pr_reg->pr_reg_all_tg_pt) ? 1 : 0);
2948 pr_debug("SPC-3 PR [%s] PREEMPT%s from Node: %s%s\n", 2947 pr_debug("SPC-3 PR [%s] PREEMPT%s from Node: %s%s\n",
2949 tfo->get_fabric_name(), (abort) ? "_AND_ABORT" : "", 2948 tfo->get_fabric_name(), (abort) ? "_AND_ABORT" : "",
2950 nacl->initiatorname, (prf_isid) ? &i_buf[0] : ""); 2949 nacl->initiatorname, (prf_isid) ? &i_buf[0] : "");
2951 /* 2950 /*
2952 * For PREEMPT_AND_ABORT, add the preempting reservation's 2951 * For PREEMPT_AND_ABORT, add the preempting reservation's
2953 * struct t10_pr_registration to the list that will be compared 2952 * struct t10_pr_registration to the list that will be compared
2954 * against received CDBs.. 2953 * against received CDBs..
2955 */ 2954 */
2956 if (preempt_and_abort_list) 2955 if (preempt_and_abort_list)
2957 list_add_tail(&pr_reg->pr_reg_abort_list, 2956 list_add_tail(&pr_reg->pr_reg_abort_list,
2958 preempt_and_abort_list); 2957 preempt_and_abort_list);
2959 } 2958 }
2960 2959
2961 static void core_scsi3_release_preempt_and_abort( 2960 static void core_scsi3_release_preempt_and_abort(
2962 struct list_head *preempt_and_abort_list, 2961 struct list_head *preempt_and_abort_list,
2963 struct t10_pr_registration *pr_reg_holder) 2962 struct t10_pr_registration *pr_reg_holder)
2964 { 2963 {
2965 struct t10_pr_registration *pr_reg, *pr_reg_tmp; 2964 struct t10_pr_registration *pr_reg, *pr_reg_tmp;
2966 2965
2967 list_for_each_entry_safe(pr_reg, pr_reg_tmp, preempt_and_abort_list, 2966 list_for_each_entry_safe(pr_reg, pr_reg_tmp, preempt_and_abort_list,
2968 pr_reg_abort_list) { 2967 pr_reg_abort_list) {
2969 2968
2970 list_del(&pr_reg->pr_reg_abort_list); 2969 list_del(&pr_reg->pr_reg_abort_list);
2971 if (pr_reg_holder == pr_reg) 2970 if (pr_reg_holder == pr_reg)
2972 continue; 2971 continue;
2973 if (pr_reg->pr_res_holder) { 2972 if (pr_reg->pr_res_holder) {
2974 pr_warn("pr_reg->pr_res_holder still set\n"); 2973 pr_warn("pr_reg->pr_res_holder still set\n");
2975 continue; 2974 continue;
2976 } 2975 }
2977 2976
2978 pr_reg->pr_reg_deve = NULL; 2977 pr_reg->pr_reg_deve = NULL;
2979 pr_reg->pr_reg_nacl = NULL; 2978 pr_reg->pr_reg_nacl = NULL;
2980 kfree(pr_reg->pr_aptpl_buf); 2979 kfree(pr_reg->pr_aptpl_buf);
2981 kmem_cache_free(t10_pr_reg_cache, pr_reg); 2980 kmem_cache_free(t10_pr_reg_cache, pr_reg);
2982 } 2981 }
2983 } 2982 }
2984 2983
2985 static int core_scsi3_pro_preempt( 2984 static int core_scsi3_pro_preempt(
2986 struct se_cmd *cmd, 2985 struct se_cmd *cmd,
2987 int type, 2986 int type,
2988 int scope, 2987 int scope,
2989 u64 res_key, 2988 u64 res_key,
2990 u64 sa_res_key, 2989 u64 sa_res_key,
2991 int abort) 2990 int abort)
2992 { 2991 {
2993 struct se_device *dev = cmd->se_dev; 2992 struct se_device *dev = cmd->se_dev;
2994 struct se_dev_entry *se_deve; 2993 struct se_dev_entry *se_deve;
2995 struct se_node_acl *pr_reg_nacl; 2994 struct se_node_acl *pr_reg_nacl;
2996 struct se_session *se_sess = cmd->se_sess; 2995 struct se_session *se_sess = cmd->se_sess;
2997 struct list_head preempt_and_abort_list; 2996 LIST_HEAD(preempt_and_abort_list);
2998 struct t10_pr_registration *pr_reg, *pr_reg_tmp, *pr_reg_n, *pr_res_holder; 2997 struct t10_pr_registration *pr_reg, *pr_reg_tmp, *pr_reg_n, *pr_res_holder;
2999 struct t10_reservation *pr_tmpl = &dev->se_sub_dev->t10_pr; 2998 struct t10_reservation *pr_tmpl = &dev->se_sub_dev->t10_pr;
3000 u32 pr_res_mapped_lun = 0; 2999 u32 pr_res_mapped_lun = 0;
3001 int all_reg = 0, calling_it_nexus = 0, released_regs = 0; 3000 int all_reg = 0, calling_it_nexus = 0, released_regs = 0;
3002 int prh_type = 0, prh_scope = 0, ret; 3001 int prh_type = 0, prh_scope = 0, ret;
3003 3002
3004 if (!se_sess) { 3003 if (!se_sess) {
3005 cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; 3004 cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
3006 return -EINVAL; 3005 return -EINVAL;
3007 } 3006 }
3008 3007
3009 se_deve = &se_sess->se_node_acl->device_list[cmd->orig_fe_lun]; 3008 se_deve = &se_sess->se_node_acl->device_list[cmd->orig_fe_lun];
3010 pr_reg_n = core_scsi3_locate_pr_reg(cmd->se_dev, se_sess->se_node_acl, 3009 pr_reg_n = core_scsi3_locate_pr_reg(cmd->se_dev, se_sess->se_node_acl,
3011 se_sess); 3010 se_sess);
3012 if (!pr_reg_n) { 3011 if (!pr_reg_n) {
3013 pr_err("SPC-3 PR: Unable to locate" 3012 pr_err("SPC-3 PR: Unable to locate"
3014 " PR_REGISTERED *pr_reg for PREEMPT%s\n", 3013 " PR_REGISTERED *pr_reg for PREEMPT%s\n",
3015 (abort) ? "_AND_ABORT" : ""); 3014 (abort) ? "_AND_ABORT" : "");
3016 cmd->scsi_sense_reason = TCM_RESERVATION_CONFLICT; 3015 cmd->scsi_sense_reason = TCM_RESERVATION_CONFLICT;
3017 return -EINVAL; 3016 return -EINVAL;
3018 } 3017 }
3019 if (pr_reg_n->pr_res_key != res_key) { 3018 if (pr_reg_n->pr_res_key != res_key) {
3020 core_scsi3_put_pr_reg(pr_reg_n); 3019 core_scsi3_put_pr_reg(pr_reg_n);
3021 cmd->scsi_sense_reason = TCM_RESERVATION_CONFLICT; 3020 cmd->scsi_sense_reason = TCM_RESERVATION_CONFLICT;
3022 return -EINVAL; 3021 return -EINVAL;
3023 } 3022 }
3024 if (scope != PR_SCOPE_LU_SCOPE) { 3023 if (scope != PR_SCOPE_LU_SCOPE) {
3025 pr_err("SPC-3 PR: Illegal SCOPE: 0x%02x\n", scope); 3024 pr_err("SPC-3 PR: Illegal SCOPE: 0x%02x\n", scope);
3026 core_scsi3_put_pr_reg(pr_reg_n); 3025 core_scsi3_put_pr_reg(pr_reg_n);
3027 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST; 3026 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST;
3028 return -EINVAL; 3027 return -EINVAL;
3029 } 3028 }
3030 INIT_LIST_HEAD(&preempt_and_abort_list);
3031 3029
3032 spin_lock(&dev->dev_reservation_lock); 3030 spin_lock(&dev->dev_reservation_lock);
3033 pr_res_holder = dev->dev_pr_res_holder; 3031 pr_res_holder = dev->dev_pr_res_holder;
3034 if (pr_res_holder && 3032 if (pr_res_holder &&
3035 ((pr_res_holder->pr_res_type == PR_TYPE_WRITE_EXCLUSIVE_ALLREG) || 3033 ((pr_res_holder->pr_res_type == PR_TYPE_WRITE_EXCLUSIVE_ALLREG) ||
3036 (pr_res_holder->pr_res_type == PR_TYPE_EXCLUSIVE_ACCESS_ALLREG))) 3034 (pr_res_holder->pr_res_type == PR_TYPE_EXCLUSIVE_ACCESS_ALLREG)))
3037 all_reg = 1; 3035 all_reg = 1;
3038 3036
3039 if (!all_reg && !sa_res_key) { 3037 if (!all_reg && !sa_res_key) {
3040 spin_unlock(&dev->dev_reservation_lock); 3038 spin_unlock(&dev->dev_reservation_lock);
3041 core_scsi3_put_pr_reg(pr_reg_n); 3039 core_scsi3_put_pr_reg(pr_reg_n);
3042 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST; 3040 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST;
3043 return -EINVAL; 3041 return -EINVAL;
3044 } 3042 }
3045 /* 3043 /*
3046 * From spc4r17, section 5.7.11.4.4 Removing Registrations: 3044 * From spc4r17, section 5.7.11.4.4 Removing Registrations:
3047 * 3045 *
3048 * If the SERVICE ACTION RESERVATION KEY field does not identify a 3046 * If the SERVICE ACTION RESERVATION KEY field does not identify a
3049 * persistent reservation holder or there is no persistent reservation 3047 * persistent reservation holder or there is no persistent reservation
3050 * holder (i.e., there is no persistent reservation), then the device 3048 * holder (i.e., there is no persistent reservation), then the device
3051 * server shall perform a preempt by doing the following in an 3049 * server shall perform a preempt by doing the following in an
3052 * uninterrupted series of actions. (See below..) 3050 * uninterrupted series of actions. (See below..)
3053 */ 3051 */
3054 if (!pr_res_holder || (pr_res_holder->pr_res_key != sa_res_key)) { 3052 if (!pr_res_holder || (pr_res_holder->pr_res_key != sa_res_key)) {
3055 /* 3053 /*
3056 * No existing or SA Reservation Key matching reservations.. 3054 * No existing or SA Reservation Key matching reservations..
3057 * 3055 *
3058 * PROUT SA PREEMPT with All Registrant type reservations are 3056 * PROUT SA PREEMPT with All Registrant type reservations are
3059 * allowed to be processed without a matching SA Reservation Key 3057 * allowed to be processed without a matching SA Reservation Key
3060 */ 3058 */
3061 spin_lock(&pr_tmpl->registration_lock); 3059 spin_lock(&pr_tmpl->registration_lock);
3062 list_for_each_entry_safe(pr_reg, pr_reg_tmp, 3060 list_for_each_entry_safe(pr_reg, pr_reg_tmp,
3063 &pr_tmpl->registration_list, pr_reg_list) { 3061 &pr_tmpl->registration_list, pr_reg_list) {
3064 /* 3062 /*
3065 * Removing of registrations in non all registrants 3063 * Removing of registrations in non all registrants
3066 * type reservations without a matching SA reservation 3064 * type reservations without a matching SA reservation
3067 * key. 3065 * key.
3068 * 3066 *
3069 * a) Remove the registrations for all I_T nexuses 3067 * a) Remove the registrations for all I_T nexuses
3070 * specified by the SERVICE ACTION RESERVATION KEY 3068 * specified by the SERVICE ACTION RESERVATION KEY
3071 * field; 3069 * field;
3072 * b) Ignore the contents of the SCOPE and TYPE fields; 3070 * b) Ignore the contents of the SCOPE and TYPE fields;
3073 * c) Process tasks as defined in 5.7.1; and 3071 * c) Process tasks as defined in 5.7.1; and
3074 * d) Establish a unit attention condition for the 3072 * d) Establish a unit attention condition for the
3075 * initiator port associated with every I_T nexus 3073 * initiator port associated with every I_T nexus
3076 * that lost its registration other than the I_T 3074 * that lost its registration other than the I_T
3077 * nexus on which the PERSISTENT RESERVE OUT command 3075 * nexus on which the PERSISTENT RESERVE OUT command
3078 * was received, with the additional sense code set 3076 * was received, with the additional sense code set
3079 * to REGISTRATIONS PREEMPTED. 3077 * to REGISTRATIONS PREEMPTED.
3080 */ 3078 */
3081 if (!all_reg) { 3079 if (!all_reg) {
3082 if (pr_reg->pr_res_key != sa_res_key) 3080 if (pr_reg->pr_res_key != sa_res_key)
3083 continue; 3081 continue;
3084 3082
3085 calling_it_nexus = (pr_reg_n == pr_reg) ? 1 : 0; 3083 calling_it_nexus = (pr_reg_n == pr_reg) ? 1 : 0;
3086 pr_reg_nacl = pr_reg->pr_reg_nacl; 3084 pr_reg_nacl = pr_reg->pr_reg_nacl;
3087 pr_res_mapped_lun = pr_reg->pr_res_mapped_lun; 3085 pr_res_mapped_lun = pr_reg->pr_res_mapped_lun;
3088 __core_scsi3_free_registration(dev, pr_reg, 3086 __core_scsi3_free_registration(dev, pr_reg,
3089 (abort) ? &preempt_and_abort_list : 3087 (abort) ? &preempt_and_abort_list :
3090 NULL, calling_it_nexus); 3088 NULL, calling_it_nexus);
3091 released_regs++; 3089 released_regs++;
3092 } else { 3090 } else {
3093 /* 3091 /*
3094 * Case for any existing all registrants type 3092 * Case for any existing all registrants type
3095 * reservation, follow logic in spc4r17 section 3093 * reservation, follow logic in spc4r17 section
3096 * 5.7.11.4 Preempting, Table 52 and Figure 7. 3094 * 5.7.11.4 Preempting, Table 52 and Figure 7.
3097 * 3095 *
3098 * For a ZERO SA Reservation key, release 3096 * For a ZERO SA Reservation key, release
3099 * all other registrations and do an implict 3097 * all other registrations and do an implict
3100 * release of active persistent reservation. 3098 * release of active persistent reservation.
3101 * 3099 *
3102 * For a non-ZERO SA Reservation key, only 3100 * For a non-ZERO SA Reservation key, only
3103 * release the matching reservation key from 3101 * release the matching reservation key from
3104 * registrations. 3102 * registrations.
3105 */ 3103 */
3106 if ((sa_res_key) && 3104 if ((sa_res_key) &&
3107 (pr_reg->pr_res_key != sa_res_key)) 3105 (pr_reg->pr_res_key != sa_res_key))
3108 continue; 3106 continue;
3109 3107
3110 calling_it_nexus = (pr_reg_n == pr_reg) ? 1 : 0; 3108 calling_it_nexus = (pr_reg_n == pr_reg) ? 1 : 0;
3111 if (calling_it_nexus) 3109 if (calling_it_nexus)
3112 continue; 3110 continue;
3113 3111
3114 pr_reg_nacl = pr_reg->pr_reg_nacl; 3112 pr_reg_nacl = pr_reg->pr_reg_nacl;
3115 pr_res_mapped_lun = pr_reg->pr_res_mapped_lun; 3113 pr_res_mapped_lun = pr_reg->pr_res_mapped_lun;
3116 __core_scsi3_free_registration(dev, pr_reg, 3114 __core_scsi3_free_registration(dev, pr_reg,
3117 (abort) ? &preempt_and_abort_list : 3115 (abort) ? &preempt_and_abort_list :
3118 NULL, 0); 3116 NULL, 0);
3119 released_regs++; 3117 released_regs++;
3120 } 3118 }
3121 if (!calling_it_nexus) 3119 if (!calling_it_nexus)
3122 core_scsi3_ua_allocate(pr_reg_nacl, 3120 core_scsi3_ua_allocate(pr_reg_nacl,
3123 pr_res_mapped_lun, 0x2A, 3121 pr_res_mapped_lun, 0x2A,
3124 ASCQ_2AH_REGISTRATIONS_PREEMPTED); 3122 ASCQ_2AH_REGISTRATIONS_PREEMPTED);
3125 } 3123 }
3126 spin_unlock(&pr_tmpl->registration_lock); 3124 spin_unlock(&pr_tmpl->registration_lock);
3127 /* 3125 /*
3128 * If a PERSISTENT RESERVE OUT with a PREEMPT service action or 3126 * If a PERSISTENT RESERVE OUT with a PREEMPT service action or
3129 * a PREEMPT AND ABORT service action sets the SERVICE ACTION 3127 * a PREEMPT AND ABORT service action sets the SERVICE ACTION
3130 * RESERVATION KEY field to a value that does not match any 3128 * RESERVATION KEY field to a value that does not match any
3131 * registered reservation key, then the device server shall 3129 * registered reservation key, then the device server shall
3132 * complete the command with RESERVATION CONFLICT status. 3130 * complete the command with RESERVATION CONFLICT status.
3133 */ 3131 */
3134 if (!released_regs) { 3132 if (!released_regs) {
3135 spin_unlock(&dev->dev_reservation_lock); 3133 spin_unlock(&dev->dev_reservation_lock);
3136 core_scsi3_put_pr_reg(pr_reg_n); 3134 core_scsi3_put_pr_reg(pr_reg_n);
3137 cmd->scsi_sense_reason = TCM_RESERVATION_CONFLICT; 3135 cmd->scsi_sense_reason = TCM_RESERVATION_CONFLICT;
3138 return -EINVAL; 3136 return -EINVAL;
3139 } 3137 }
3140 /* 3138 /*
3141 * For an existing all registrants type reservation 3139 * For an existing all registrants type reservation
3142 * with a zero SA rservation key, preempt the existing 3140 * with a zero SA rservation key, preempt the existing
3143 * reservation with the new PR type and scope. 3141 * reservation with the new PR type and scope.
3144 */ 3142 */
3145 if (pr_res_holder && all_reg && !(sa_res_key)) { 3143 if (pr_res_holder && all_reg && !(sa_res_key)) {
3146 __core_scsi3_complete_pro_preempt(dev, pr_reg_n, 3144 __core_scsi3_complete_pro_preempt(dev, pr_reg_n,
3147 (abort) ? &preempt_and_abort_list : NULL, 3145 (abort) ? &preempt_and_abort_list : NULL,
3148 type, scope, abort); 3146 type, scope, abort);
3149 3147
3150 if (abort) 3148 if (abort)
3151 core_scsi3_release_preempt_and_abort( 3149 core_scsi3_release_preempt_and_abort(
3152 &preempt_and_abort_list, pr_reg_n); 3150 &preempt_and_abort_list, pr_reg_n);
3153 } 3151 }
3154 spin_unlock(&dev->dev_reservation_lock); 3152 spin_unlock(&dev->dev_reservation_lock);
3155 3153
3156 if (pr_tmpl->pr_aptpl_active) { 3154 if (pr_tmpl->pr_aptpl_active) {
3157 ret = core_scsi3_update_and_write_aptpl(cmd->se_dev, 3155 ret = core_scsi3_update_and_write_aptpl(cmd->se_dev,
3158 &pr_reg_n->pr_aptpl_buf[0], 3156 &pr_reg_n->pr_aptpl_buf[0],
3159 pr_tmpl->pr_aptpl_buf_len); 3157 pr_tmpl->pr_aptpl_buf_len);
3160 if (!ret) 3158 if (!ret)
3161 pr_debug("SPC-3 PR: Updated APTPL" 3159 pr_debug("SPC-3 PR: Updated APTPL"
3162 " metadata for PREEMPT%s\n", (abort) ? 3160 " metadata for PREEMPT%s\n", (abort) ?
3163 "_AND_ABORT" : ""); 3161 "_AND_ABORT" : "");
3164 } 3162 }
3165 3163
3166 core_scsi3_put_pr_reg(pr_reg_n); 3164 core_scsi3_put_pr_reg(pr_reg_n);
3167 core_scsi3_pr_generation(cmd->se_dev); 3165 core_scsi3_pr_generation(cmd->se_dev);
3168 return 0; 3166 return 0;
3169 } 3167 }
3170 /* 3168 /*
3171 * The PREEMPTing SA reservation key matches that of the 3169 * The PREEMPTing SA reservation key matches that of the
3172 * existing persistent reservation, first, we check if 3170 * existing persistent reservation, first, we check if
3173 * we are preempting our own reservation. 3171 * we are preempting our own reservation.
3174 * From spc4r17, section 5.7.11.4.3 Preempting 3172 * From spc4r17, section 5.7.11.4.3 Preempting
3175 * persistent reservations and registration handling 3173 * persistent reservations and registration handling
3176 * 3174 *
3177 * If an all registrants persistent reservation is not 3175 * If an all registrants persistent reservation is not
3178 * present, it is not an error for the persistent 3176 * present, it is not an error for the persistent
3179 * reservation holder to preempt itself (i.e., a 3177 * reservation holder to preempt itself (i.e., a
3180 * PERSISTENT RESERVE OUT with a PREEMPT service action 3178 * PERSISTENT RESERVE OUT with a PREEMPT service action
3181 * or a PREEMPT AND ABORT service action with the 3179 * or a PREEMPT AND ABORT service action with the
3182 * SERVICE ACTION RESERVATION KEY value equal to the 3180 * SERVICE ACTION RESERVATION KEY value equal to the
3183 * persistent reservation holder's reservation key that 3181 * persistent reservation holder's reservation key that
3184 * is received from the persistent reservation holder). 3182 * is received from the persistent reservation holder).
3185 * In that case, the device server shall establish the 3183 * In that case, the device server shall establish the
3186 * new persistent reservation and maintain the 3184 * new persistent reservation and maintain the
3187 * registration. 3185 * registration.
3188 */ 3186 */
3189 prh_type = pr_res_holder->pr_res_type; 3187 prh_type = pr_res_holder->pr_res_type;
3190 prh_scope = pr_res_holder->pr_res_scope; 3188 prh_scope = pr_res_holder->pr_res_scope;
3191 /* 3189 /*
3192 * If the SERVICE ACTION RESERVATION KEY field identifies a 3190 * If the SERVICE ACTION RESERVATION KEY field identifies a
3193 * persistent reservation holder (see 5.7.10), the device 3191 * persistent reservation holder (see 5.7.10), the device
3194 * server shall perform a preempt by doing the following as 3192 * server shall perform a preempt by doing the following as
3195 * an uninterrupted series of actions: 3193 * an uninterrupted series of actions:
3196 * 3194 *
3197 * a) Release the persistent reservation for the holder 3195 * a) Release the persistent reservation for the holder
3198 * identified by the SERVICE ACTION RESERVATION KEY field; 3196 * identified by the SERVICE ACTION RESERVATION KEY field;
3199 */ 3197 */
3200 if (pr_reg_n != pr_res_holder) 3198 if (pr_reg_n != pr_res_holder)
3201 __core_scsi3_complete_pro_release(dev, 3199 __core_scsi3_complete_pro_release(dev,
3202 pr_res_holder->pr_reg_nacl, 3200 pr_res_holder->pr_reg_nacl,
3203 dev->dev_pr_res_holder, 0); 3201 dev->dev_pr_res_holder, 0);
3204 /* 3202 /*
3205 * b) Remove the registrations for all I_T nexuses identified 3203 * b) Remove the registrations for all I_T nexuses identified
3206 * by the SERVICE ACTION RESERVATION KEY field, except the 3204 * by the SERVICE ACTION RESERVATION KEY field, except the
3207 * I_T nexus that is being used for the PERSISTENT RESERVE 3205 * I_T nexus that is being used for the PERSISTENT RESERVE
3208 * OUT command. If an all registrants persistent reservation 3206 * OUT command. If an all registrants persistent reservation
3209 * is present and the SERVICE ACTION RESERVATION KEY field 3207 * is present and the SERVICE ACTION RESERVATION KEY field
3210 * is set to zero, then all registrations shall be removed 3208 * is set to zero, then all registrations shall be removed
3211 * except for that of the I_T nexus that is being used for 3209 * except for that of the I_T nexus that is being used for
3212 * the PERSISTENT RESERVE OUT command; 3210 * the PERSISTENT RESERVE OUT command;
3213 */ 3211 */
3214 spin_lock(&pr_tmpl->registration_lock); 3212 spin_lock(&pr_tmpl->registration_lock);
3215 list_for_each_entry_safe(pr_reg, pr_reg_tmp, 3213 list_for_each_entry_safe(pr_reg, pr_reg_tmp,
3216 &pr_tmpl->registration_list, pr_reg_list) { 3214 &pr_tmpl->registration_list, pr_reg_list) {
3217 3215
3218 calling_it_nexus = (pr_reg_n == pr_reg) ? 1 : 0; 3216 calling_it_nexus = (pr_reg_n == pr_reg) ? 1 : 0;
3219 if (calling_it_nexus) 3217 if (calling_it_nexus)
3220 continue; 3218 continue;
3221 3219
3222 if (pr_reg->pr_res_key != sa_res_key) 3220 if (pr_reg->pr_res_key != sa_res_key)
3223 continue; 3221 continue;
3224 3222
3225 pr_reg_nacl = pr_reg->pr_reg_nacl; 3223 pr_reg_nacl = pr_reg->pr_reg_nacl;
3226 pr_res_mapped_lun = pr_reg->pr_res_mapped_lun; 3224 pr_res_mapped_lun = pr_reg->pr_res_mapped_lun;
3227 __core_scsi3_free_registration(dev, pr_reg, 3225 __core_scsi3_free_registration(dev, pr_reg,
3228 (abort) ? &preempt_and_abort_list : NULL, 3226 (abort) ? &preempt_and_abort_list : NULL,
3229 calling_it_nexus); 3227 calling_it_nexus);
3230 /* 3228 /*
3231 * e) Establish a unit attention condition for the initiator 3229 * e) Establish a unit attention condition for the initiator
3232 * port associated with every I_T nexus that lost its 3230 * port associated with every I_T nexus that lost its
3233 * persistent reservation and/or registration, with the 3231 * persistent reservation and/or registration, with the
3234 * additional sense code set to REGISTRATIONS PREEMPTED; 3232 * additional sense code set to REGISTRATIONS PREEMPTED;
3235 */ 3233 */
3236 core_scsi3_ua_allocate(pr_reg_nacl, pr_res_mapped_lun, 0x2A, 3234 core_scsi3_ua_allocate(pr_reg_nacl, pr_res_mapped_lun, 0x2A,
3237 ASCQ_2AH_REGISTRATIONS_PREEMPTED); 3235 ASCQ_2AH_REGISTRATIONS_PREEMPTED);
3238 } 3236 }
3239 spin_unlock(&pr_tmpl->registration_lock); 3237 spin_unlock(&pr_tmpl->registration_lock);
3240 /* 3238 /*
3241 * c) Establish a persistent reservation for the preempting 3239 * c) Establish a persistent reservation for the preempting
3242 * I_T nexus using the contents of the SCOPE and TYPE fields; 3240 * I_T nexus using the contents of the SCOPE and TYPE fields;
3243 */ 3241 */
3244 __core_scsi3_complete_pro_preempt(dev, pr_reg_n, 3242 __core_scsi3_complete_pro_preempt(dev, pr_reg_n,
3245 (abort) ? &preempt_and_abort_list : NULL, 3243 (abort) ? &preempt_and_abort_list : NULL,
3246 type, scope, abort); 3244 type, scope, abort);
3247 /* 3245 /*
3248 * d) Process tasks as defined in 5.7.1; 3246 * d) Process tasks as defined in 5.7.1;
3249 * e) See above.. 3247 * e) See above..
3250 * f) If the type or scope has changed, then for every I_T nexus 3248 * f) If the type or scope has changed, then for every I_T nexus
3251 * whose reservation key was not removed, except for the I_T 3249 * whose reservation key was not removed, except for the I_T
3252 * nexus on which the PERSISTENT RESERVE OUT command was 3250 * nexus on which the PERSISTENT RESERVE OUT command was
3253 * received, the device server shall establish a unit 3251 * received, the device server shall establish a unit
3254 * attention condition for the initiator port associated with 3252 * attention condition for the initiator port associated with
3255 * that I_T nexus, with the additional sense code set to 3253 * that I_T nexus, with the additional sense code set to
3256 * RESERVATIONS RELEASED. If the type or scope have not 3254 * RESERVATIONS RELEASED. If the type or scope have not
3257 * changed, then no unit attention condition(s) shall be 3255 * changed, then no unit attention condition(s) shall be
3258 * established for this reason. 3256 * established for this reason.
3259 */ 3257 */
3260 if ((prh_type != type) || (prh_scope != scope)) { 3258 if ((prh_type != type) || (prh_scope != scope)) {
3261 spin_lock(&pr_tmpl->registration_lock); 3259 spin_lock(&pr_tmpl->registration_lock);
3262 list_for_each_entry_safe(pr_reg, pr_reg_tmp, 3260 list_for_each_entry_safe(pr_reg, pr_reg_tmp,
3263 &pr_tmpl->registration_list, pr_reg_list) { 3261 &pr_tmpl->registration_list, pr_reg_list) {
3264 3262
3265 calling_it_nexus = (pr_reg_n == pr_reg) ? 1 : 0; 3263 calling_it_nexus = (pr_reg_n == pr_reg) ? 1 : 0;
3266 if (calling_it_nexus) 3264 if (calling_it_nexus)
3267 continue; 3265 continue;
3268 3266
3269 core_scsi3_ua_allocate(pr_reg->pr_reg_nacl, 3267 core_scsi3_ua_allocate(pr_reg->pr_reg_nacl,
3270 pr_reg->pr_res_mapped_lun, 0x2A, 3268 pr_reg->pr_res_mapped_lun, 0x2A,
3271 ASCQ_2AH_RESERVATIONS_RELEASED); 3269 ASCQ_2AH_RESERVATIONS_RELEASED);
3272 } 3270 }
3273 spin_unlock(&pr_tmpl->registration_lock); 3271 spin_unlock(&pr_tmpl->registration_lock);
3274 } 3272 }
3275 spin_unlock(&dev->dev_reservation_lock); 3273 spin_unlock(&dev->dev_reservation_lock);
3276 /* 3274 /*
3277 * Call LUN_RESET logic upon list of struct t10_pr_registration, 3275 * Call LUN_RESET logic upon list of struct t10_pr_registration,
3278 * All received CDBs for the matching existing reservation and 3276 * All received CDBs for the matching existing reservation and
3279 * registrations undergo ABORT_TASK logic. 3277 * registrations undergo ABORT_TASK logic.
3280 * 3278 *
3281 * From there, core_scsi3_release_preempt_and_abort() will 3279 * From there, core_scsi3_release_preempt_and_abort() will
3282 * release every registration in the list (which have already 3280 * release every registration in the list (which have already
3283 * been removed from the primary pr_reg list), except the 3281 * been removed from the primary pr_reg list), except the
3284 * new persistent reservation holder, the calling Initiator Port. 3282 * new persistent reservation holder, the calling Initiator Port.
3285 */ 3283 */
3286 if (abort) { 3284 if (abort) {
3287 core_tmr_lun_reset(dev, NULL, &preempt_and_abort_list, cmd); 3285 core_tmr_lun_reset(dev, NULL, &preempt_and_abort_list, cmd);
3288 core_scsi3_release_preempt_and_abort(&preempt_and_abort_list, 3286 core_scsi3_release_preempt_and_abort(&preempt_and_abort_list,
3289 pr_reg_n); 3287 pr_reg_n);
3290 } 3288 }
3291 3289
3292 if (pr_tmpl->pr_aptpl_active) { 3290 if (pr_tmpl->pr_aptpl_active) {
3293 ret = core_scsi3_update_and_write_aptpl(cmd->se_dev, 3291 ret = core_scsi3_update_and_write_aptpl(cmd->se_dev,
3294 &pr_reg_n->pr_aptpl_buf[0], 3292 &pr_reg_n->pr_aptpl_buf[0],
3295 pr_tmpl->pr_aptpl_buf_len); 3293 pr_tmpl->pr_aptpl_buf_len);
3296 if (!ret) 3294 if (!ret)
3297 pr_debug("SPC-3 PR: Updated APTPL metadata for PREEMPT" 3295 pr_debug("SPC-3 PR: Updated APTPL metadata for PREEMPT"
3298 "%s\n", (abort) ? "_AND_ABORT" : ""); 3296 "%s\n", (abort) ? "_AND_ABORT" : "");
3299 } 3297 }
3300 3298
3301 core_scsi3_put_pr_reg(pr_reg_n); 3299 core_scsi3_put_pr_reg(pr_reg_n);
3302 core_scsi3_pr_generation(cmd->se_dev); 3300 core_scsi3_pr_generation(cmd->se_dev);
3303 return 0; 3301 return 0;
3304 } 3302 }
3305 3303
3306 static int core_scsi3_emulate_pro_preempt( 3304 static int core_scsi3_emulate_pro_preempt(
3307 struct se_cmd *cmd, 3305 struct se_cmd *cmd,
3308 int type, 3306 int type,
3309 int scope, 3307 int scope,
3310 u64 res_key, 3308 u64 res_key,
3311 u64 sa_res_key, 3309 u64 sa_res_key,
3312 int abort) 3310 int abort)
3313 { 3311 {
3314 int ret = 0; 3312 int ret = 0;
3315 3313
3316 switch (type) { 3314 switch (type) {
3317 case PR_TYPE_WRITE_EXCLUSIVE: 3315 case PR_TYPE_WRITE_EXCLUSIVE:
3318 case PR_TYPE_EXCLUSIVE_ACCESS: 3316 case PR_TYPE_EXCLUSIVE_ACCESS:
3319 case PR_TYPE_WRITE_EXCLUSIVE_REGONLY: 3317 case PR_TYPE_WRITE_EXCLUSIVE_REGONLY:
3320 case PR_TYPE_EXCLUSIVE_ACCESS_REGONLY: 3318 case PR_TYPE_EXCLUSIVE_ACCESS_REGONLY:
3321 case PR_TYPE_WRITE_EXCLUSIVE_ALLREG: 3319 case PR_TYPE_WRITE_EXCLUSIVE_ALLREG:
3322 case PR_TYPE_EXCLUSIVE_ACCESS_ALLREG: 3320 case PR_TYPE_EXCLUSIVE_ACCESS_ALLREG:
3323 ret = core_scsi3_pro_preempt(cmd, type, scope, 3321 ret = core_scsi3_pro_preempt(cmd, type, scope,
3324 res_key, sa_res_key, abort); 3322 res_key, sa_res_key, abort);
3325 break; 3323 break;
3326 default: 3324 default:
3327 pr_err("SPC-3 PR: Unknown Service Action PREEMPT%s" 3325 pr_err("SPC-3 PR: Unknown Service Action PREEMPT%s"
3328 " Type: 0x%02x\n", (abort) ? "_AND_ABORT" : "", type); 3326 " Type: 0x%02x\n", (abort) ? "_AND_ABORT" : "", type);
3329 cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD; 3327 cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD;
3330 return -EINVAL; 3328 return -EINVAL;
3331 } 3329 }
3332 3330
3333 return ret; 3331 return ret;
3334 } 3332 }
3335 3333
3336 3334
3337 static int core_scsi3_emulate_pro_register_and_move( 3335 static int core_scsi3_emulate_pro_register_and_move(
3338 struct se_cmd *cmd, 3336 struct se_cmd *cmd,
3339 u64 res_key, 3337 u64 res_key,
3340 u64 sa_res_key, 3338 u64 sa_res_key,
3341 int aptpl, 3339 int aptpl,
3342 int unreg) 3340 int unreg)
3343 { 3341 {
3344 struct se_session *se_sess = cmd->se_sess; 3342 struct se_session *se_sess = cmd->se_sess;
3345 struct se_device *dev = cmd->se_dev; 3343 struct se_device *dev = cmd->se_dev;
3346 struct se_dev_entry *se_deve, *dest_se_deve = NULL; 3344 struct se_dev_entry *se_deve, *dest_se_deve = NULL;
3347 struct se_lun *se_lun = cmd->se_lun; 3345 struct se_lun *se_lun = cmd->se_lun;
3348 struct se_node_acl *pr_res_nacl, *pr_reg_nacl, *dest_node_acl = NULL; 3346 struct se_node_acl *pr_res_nacl, *pr_reg_nacl, *dest_node_acl = NULL;
3349 struct se_port *se_port; 3347 struct se_port *se_port;
3350 struct se_portal_group *se_tpg, *dest_se_tpg = NULL; 3348 struct se_portal_group *se_tpg, *dest_se_tpg = NULL;
3351 struct target_core_fabric_ops *dest_tf_ops = NULL, *tf_ops; 3349 struct target_core_fabric_ops *dest_tf_ops = NULL, *tf_ops;
3352 struct t10_pr_registration *pr_reg, *pr_res_holder, *dest_pr_reg; 3350 struct t10_pr_registration *pr_reg, *pr_res_holder, *dest_pr_reg;
3353 struct t10_reservation *pr_tmpl = &dev->se_sub_dev->t10_pr; 3351 struct t10_reservation *pr_tmpl = &dev->se_sub_dev->t10_pr;
3354 unsigned char *buf; 3352 unsigned char *buf;
3355 unsigned char *initiator_str; 3353 unsigned char *initiator_str;
3356 char *iport_ptr = NULL, dest_iport[64], i_buf[PR_REG_ISID_ID_LEN]; 3354 char *iport_ptr = NULL, dest_iport[64], i_buf[PR_REG_ISID_ID_LEN];
3357 u32 tid_len, tmp_tid_len; 3355 u32 tid_len, tmp_tid_len;
3358 int new_reg = 0, type, scope, ret, matching_iname, prf_isid; 3356 int new_reg = 0, type, scope, ret, matching_iname, prf_isid;
3359 unsigned short rtpi; 3357 unsigned short rtpi;
3360 unsigned char proto_ident; 3358 unsigned char proto_ident;
3361 3359
3362 if (!se_sess || !se_lun) { 3360 if (!se_sess || !se_lun) {
3363 pr_err("SPC-3 PR: se_sess || struct se_lun is NULL!\n"); 3361 pr_err("SPC-3 PR: se_sess || struct se_lun is NULL!\n");
3364 cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; 3362 cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
3365 return -EINVAL; 3363 return -EINVAL;
3366 } 3364 }
3367 memset(dest_iport, 0, 64); 3365 memset(dest_iport, 0, 64);
3368 memset(i_buf, 0, PR_REG_ISID_ID_LEN); 3366 memset(i_buf, 0, PR_REG_ISID_ID_LEN);
3369 se_tpg = se_sess->se_tpg; 3367 se_tpg = se_sess->se_tpg;
3370 tf_ops = se_tpg->se_tpg_tfo; 3368 tf_ops = se_tpg->se_tpg_tfo;
3371 se_deve = &se_sess->se_node_acl->device_list[cmd->orig_fe_lun]; 3369 se_deve = &se_sess->se_node_acl->device_list[cmd->orig_fe_lun];
3372 /* 3370 /*
3373 * Follow logic from spc4r17 Section 5.7.8, Table 50 -- 3371 * Follow logic from spc4r17 Section 5.7.8, Table 50 --
3374 * Register behaviors for a REGISTER AND MOVE service action 3372 * Register behaviors for a REGISTER AND MOVE service action
3375 * 3373 *
3376 * Locate the existing *pr_reg via struct se_node_acl pointers 3374 * Locate the existing *pr_reg via struct se_node_acl pointers
3377 */ 3375 */
3378 pr_reg = core_scsi3_locate_pr_reg(cmd->se_dev, se_sess->se_node_acl, 3376 pr_reg = core_scsi3_locate_pr_reg(cmd->se_dev, se_sess->se_node_acl,
3379 se_sess); 3377 se_sess);
3380 if (!pr_reg) { 3378 if (!pr_reg) {
3381 pr_err("SPC-3 PR: Unable to locate PR_REGISTERED" 3379 pr_err("SPC-3 PR: Unable to locate PR_REGISTERED"
3382 " *pr_reg for REGISTER_AND_MOVE\n"); 3380 " *pr_reg for REGISTER_AND_MOVE\n");
3383 cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; 3381 cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
3384 return -EINVAL; 3382 return -EINVAL;
3385 } 3383 }
3386 /* 3384 /*
3387 * The provided reservation key much match the existing reservation key 3385 * The provided reservation key much match the existing reservation key
3388 * provided during this initiator's I_T nexus registration. 3386 * provided during this initiator's I_T nexus registration.
3389 */ 3387 */
3390 if (res_key != pr_reg->pr_res_key) { 3388 if (res_key != pr_reg->pr_res_key) {
3391 pr_warn("SPC-3 PR REGISTER_AND_MOVE: Received" 3389 pr_warn("SPC-3 PR REGISTER_AND_MOVE: Received"
3392 " res_key: 0x%016Lx does not match existing SA REGISTER" 3390 " res_key: 0x%016Lx does not match existing SA REGISTER"
3393 " res_key: 0x%016Lx\n", res_key, pr_reg->pr_res_key); 3391 " res_key: 0x%016Lx\n", res_key, pr_reg->pr_res_key);
3394 core_scsi3_put_pr_reg(pr_reg); 3392 core_scsi3_put_pr_reg(pr_reg);
3395 cmd->scsi_sense_reason = TCM_RESERVATION_CONFLICT; 3393 cmd->scsi_sense_reason = TCM_RESERVATION_CONFLICT;
3396 return -EINVAL; 3394 return -EINVAL;
3397 } 3395 }
3398 /* 3396 /*
3399 * The service active reservation key needs to be non zero 3397 * The service active reservation key needs to be non zero
3400 */ 3398 */
3401 if (!sa_res_key) { 3399 if (!sa_res_key) {
3402 pr_warn("SPC-3 PR REGISTER_AND_MOVE: Received zero" 3400 pr_warn("SPC-3 PR REGISTER_AND_MOVE: Received zero"
3403 " sa_res_key\n"); 3401 " sa_res_key\n");
3404 core_scsi3_put_pr_reg(pr_reg); 3402 core_scsi3_put_pr_reg(pr_reg);
3405 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST; 3403 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST;
3406 return -EINVAL; 3404 return -EINVAL;
3407 } 3405 }
3408 3406
3409 /* 3407 /*
3410 * Determine the Relative Target Port Identifier where the reservation 3408 * Determine the Relative Target Port Identifier where the reservation
3411 * will be moved to for the TransportID containing SCSI initiator WWN 3409 * will be moved to for the TransportID containing SCSI initiator WWN
3412 * information. 3410 * information.
3413 */ 3411 */
3414 buf = transport_kmap_data_sg(cmd); 3412 buf = transport_kmap_data_sg(cmd);
3415 rtpi = (buf[18] & 0xff) << 8; 3413 rtpi = (buf[18] & 0xff) << 8;
3416 rtpi |= buf[19] & 0xff; 3414 rtpi |= buf[19] & 0xff;
3417 tid_len = (buf[20] & 0xff) << 24; 3415 tid_len = (buf[20] & 0xff) << 24;
3418 tid_len |= (buf[21] & 0xff) << 16; 3416 tid_len |= (buf[21] & 0xff) << 16;
3419 tid_len |= (buf[22] & 0xff) << 8; 3417 tid_len |= (buf[22] & 0xff) << 8;
3420 tid_len |= buf[23] & 0xff; 3418 tid_len |= buf[23] & 0xff;
3421 transport_kunmap_data_sg(cmd); 3419 transport_kunmap_data_sg(cmd);
3422 buf = NULL; 3420 buf = NULL;
3423 3421
3424 if ((tid_len + 24) != cmd->data_length) { 3422 if ((tid_len + 24) != cmd->data_length) {
3425 pr_err("SPC-3 PR: Illegal tid_len: %u + 24 byte header" 3423 pr_err("SPC-3 PR: Illegal tid_len: %u + 24 byte header"
3426 " does not equal CDB data_length: %u\n", tid_len, 3424 " does not equal CDB data_length: %u\n", tid_len,
3427 cmd->data_length); 3425 cmd->data_length);
3428 core_scsi3_put_pr_reg(pr_reg); 3426 core_scsi3_put_pr_reg(pr_reg);
3429 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST; 3427 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST;
3430 return -EINVAL; 3428 return -EINVAL;
3431 } 3429 }
3432 3430
3433 spin_lock(&dev->se_port_lock); 3431 spin_lock(&dev->se_port_lock);
3434 list_for_each_entry(se_port, &dev->dev_sep_list, sep_list) { 3432 list_for_each_entry(se_port, &dev->dev_sep_list, sep_list) {
3435 if (se_port->sep_rtpi != rtpi) 3433 if (se_port->sep_rtpi != rtpi)
3436 continue; 3434 continue;
3437 dest_se_tpg = se_port->sep_tpg; 3435 dest_se_tpg = se_port->sep_tpg;
3438 if (!dest_se_tpg) 3436 if (!dest_se_tpg)
3439 continue; 3437 continue;
3440 dest_tf_ops = dest_se_tpg->se_tpg_tfo; 3438 dest_tf_ops = dest_se_tpg->se_tpg_tfo;
3441 if (!dest_tf_ops) 3439 if (!dest_tf_ops)
3442 continue; 3440 continue;
3443 3441
3444 atomic_inc(&dest_se_tpg->tpg_pr_ref_count); 3442 atomic_inc(&dest_se_tpg->tpg_pr_ref_count);
3445 smp_mb__after_atomic_inc(); 3443 smp_mb__after_atomic_inc();
3446 spin_unlock(&dev->se_port_lock); 3444 spin_unlock(&dev->se_port_lock);
3447 3445
3448 ret = core_scsi3_tpg_depend_item(dest_se_tpg); 3446 ret = core_scsi3_tpg_depend_item(dest_se_tpg);
3449 if (ret != 0) { 3447 if (ret != 0) {
3450 pr_err("core_scsi3_tpg_depend_item() failed" 3448 pr_err("core_scsi3_tpg_depend_item() failed"
3451 " for dest_se_tpg\n"); 3449 " for dest_se_tpg\n");
3452 atomic_dec(&dest_se_tpg->tpg_pr_ref_count); 3450 atomic_dec(&dest_se_tpg->tpg_pr_ref_count);
3453 smp_mb__after_atomic_dec(); 3451 smp_mb__after_atomic_dec();
3454 core_scsi3_put_pr_reg(pr_reg); 3452 core_scsi3_put_pr_reg(pr_reg);
3455 cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; 3453 cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
3456 return -EINVAL; 3454 return -EINVAL;
3457 } 3455 }
3458 3456
3459 spin_lock(&dev->se_port_lock); 3457 spin_lock(&dev->se_port_lock);
3460 break; 3458 break;
3461 } 3459 }
3462 spin_unlock(&dev->se_port_lock); 3460 spin_unlock(&dev->se_port_lock);
3463 3461
3464 if (!dest_se_tpg || !dest_tf_ops) { 3462 if (!dest_se_tpg || !dest_tf_ops) {
3465 pr_err("SPC-3 PR REGISTER_AND_MOVE: Unable to locate" 3463 pr_err("SPC-3 PR REGISTER_AND_MOVE: Unable to locate"
3466 " fabric ops from Relative Target Port Identifier:" 3464 " fabric ops from Relative Target Port Identifier:"
3467 " %hu\n", rtpi); 3465 " %hu\n", rtpi);
3468 core_scsi3_put_pr_reg(pr_reg); 3466 core_scsi3_put_pr_reg(pr_reg);
3469 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST; 3467 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST;
3470 return -EINVAL; 3468 return -EINVAL;
3471 } 3469 }
3472 3470
3473 buf = transport_kmap_data_sg(cmd); 3471 buf = transport_kmap_data_sg(cmd);
3474 proto_ident = (buf[24] & 0x0f); 3472 proto_ident = (buf[24] & 0x0f);
3475 #if 0 3473 #if 0
3476 pr_debug("SPC-3 PR REGISTER_AND_MOVE: Extracted Protocol Identifier:" 3474 pr_debug("SPC-3 PR REGISTER_AND_MOVE: Extracted Protocol Identifier:"
3477 " 0x%02x\n", proto_ident); 3475 " 0x%02x\n", proto_ident);
3478 #endif 3476 #endif
3479 if (proto_ident != dest_tf_ops->get_fabric_proto_ident(dest_se_tpg)) { 3477 if (proto_ident != dest_tf_ops->get_fabric_proto_ident(dest_se_tpg)) {
3480 pr_err("SPC-3 PR REGISTER_AND_MOVE: Received" 3478 pr_err("SPC-3 PR REGISTER_AND_MOVE: Received"
3481 " proto_ident: 0x%02x does not match ident: 0x%02x" 3479 " proto_ident: 0x%02x does not match ident: 0x%02x"
3482 " from fabric: %s\n", proto_ident, 3480 " from fabric: %s\n", proto_ident,
3483 dest_tf_ops->get_fabric_proto_ident(dest_se_tpg), 3481 dest_tf_ops->get_fabric_proto_ident(dest_se_tpg),
3484 dest_tf_ops->get_fabric_name()); 3482 dest_tf_ops->get_fabric_name());
3485 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST; 3483 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST;
3486 ret = -EINVAL; 3484 ret = -EINVAL;
3487 goto out; 3485 goto out;
3488 } 3486 }
3489 if (dest_tf_ops->tpg_parse_pr_out_transport_id == NULL) { 3487 if (dest_tf_ops->tpg_parse_pr_out_transport_id == NULL) {
3490 pr_err("SPC-3 PR REGISTER_AND_MOVE: Fabric does not" 3488 pr_err("SPC-3 PR REGISTER_AND_MOVE: Fabric does not"
3491 " containg a valid tpg_parse_pr_out_transport_id" 3489 " containg a valid tpg_parse_pr_out_transport_id"
3492 " function pointer\n"); 3490 " function pointer\n");
3493 cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; 3491 cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
3494 ret = -EINVAL; 3492 ret = -EINVAL;
3495 goto out; 3493 goto out;
3496 } 3494 }
3497 initiator_str = dest_tf_ops->tpg_parse_pr_out_transport_id(dest_se_tpg, 3495 initiator_str = dest_tf_ops->tpg_parse_pr_out_transport_id(dest_se_tpg,
3498 (const char *)&buf[24], &tmp_tid_len, &iport_ptr); 3496 (const char *)&buf[24], &tmp_tid_len, &iport_ptr);
3499 if (!initiator_str) { 3497 if (!initiator_str) {
3500 pr_err("SPC-3 PR REGISTER_AND_MOVE: Unable to locate" 3498 pr_err("SPC-3 PR REGISTER_AND_MOVE: Unable to locate"
3501 " initiator_str from Transport ID\n"); 3499 " initiator_str from Transport ID\n");
3502 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST; 3500 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST;
3503 ret = -EINVAL; 3501 ret = -EINVAL;
3504 goto out; 3502 goto out;
3505 } 3503 }
3506 3504
3507 transport_kunmap_data_sg(cmd); 3505 transport_kunmap_data_sg(cmd);
3508 buf = NULL; 3506 buf = NULL;
3509 3507
3510 pr_debug("SPC-3 PR [%s] Extracted initiator %s identifier: %s" 3508 pr_debug("SPC-3 PR [%s] Extracted initiator %s identifier: %s"
3511 " %s\n", dest_tf_ops->get_fabric_name(), (iport_ptr != NULL) ? 3509 " %s\n", dest_tf_ops->get_fabric_name(), (iport_ptr != NULL) ?
3512 "port" : "device", initiator_str, (iport_ptr != NULL) ? 3510 "port" : "device", initiator_str, (iport_ptr != NULL) ?
3513 iport_ptr : ""); 3511 iport_ptr : "");
3514 /* 3512 /*
3515 * If a PERSISTENT RESERVE OUT command with a REGISTER AND MOVE service 3513 * If a PERSISTENT RESERVE OUT command with a REGISTER AND MOVE service
3516 * action specifies a TransportID that is the same as the initiator port 3514 * action specifies a TransportID that is the same as the initiator port
3517 * of the I_T nexus for the command received, then the command shall 3515 * of the I_T nexus for the command received, then the command shall
3518 * be terminated with CHECK CONDITION status, with the sense key set to 3516 * be terminated with CHECK CONDITION status, with the sense key set to
3519 * ILLEGAL REQUEST, and the additional sense code set to INVALID FIELD 3517 * ILLEGAL REQUEST, and the additional sense code set to INVALID FIELD
3520 * IN PARAMETER LIST. 3518 * IN PARAMETER LIST.
3521 */ 3519 */
3522 pr_reg_nacl = pr_reg->pr_reg_nacl; 3520 pr_reg_nacl = pr_reg->pr_reg_nacl;
3523 matching_iname = (!strcmp(initiator_str, 3521 matching_iname = (!strcmp(initiator_str,
3524 pr_reg_nacl->initiatorname)) ? 1 : 0; 3522 pr_reg_nacl->initiatorname)) ? 1 : 0;
3525 if (!matching_iname) 3523 if (!matching_iname)
3526 goto after_iport_check; 3524 goto after_iport_check;
3527 3525
3528 if (!iport_ptr || !pr_reg->isid_present_at_reg) { 3526 if (!iport_ptr || !pr_reg->isid_present_at_reg) {
3529 pr_err("SPC-3 PR REGISTER_AND_MOVE: TransportID: %s" 3527 pr_err("SPC-3 PR REGISTER_AND_MOVE: TransportID: %s"
3530 " matches: %s on received I_T Nexus\n", initiator_str, 3528 " matches: %s on received I_T Nexus\n", initiator_str,
3531 pr_reg_nacl->initiatorname); 3529 pr_reg_nacl->initiatorname);
3532 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST; 3530 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST;
3533 ret = -EINVAL; 3531 ret = -EINVAL;
3534 goto out; 3532 goto out;
3535 } 3533 }
3536 if (!strcmp(iport_ptr, pr_reg->pr_reg_isid)) { 3534 if (!strcmp(iport_ptr, pr_reg->pr_reg_isid)) {
3537 pr_err("SPC-3 PR REGISTER_AND_MOVE: TransportID: %s %s" 3535 pr_err("SPC-3 PR REGISTER_AND_MOVE: TransportID: %s %s"
3538 " matches: %s %s on received I_T Nexus\n", 3536 " matches: %s %s on received I_T Nexus\n",
3539 initiator_str, iport_ptr, pr_reg_nacl->initiatorname, 3537 initiator_str, iport_ptr, pr_reg_nacl->initiatorname,
3540 pr_reg->pr_reg_isid); 3538 pr_reg->pr_reg_isid);
3541 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST; 3539 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST;
3542 ret = -EINVAL; 3540 ret = -EINVAL;
3543 goto out; 3541 goto out;
3544 } 3542 }
3545 after_iport_check: 3543 after_iport_check:
3546 /* 3544 /*
3547 * Locate the destination struct se_node_acl from the received Transport ID 3545 * Locate the destination struct se_node_acl from the received Transport ID
3548 */ 3546 */
3549 spin_lock_irq(&dest_se_tpg->acl_node_lock); 3547 spin_lock_irq(&dest_se_tpg->acl_node_lock);
3550 dest_node_acl = __core_tpg_get_initiator_node_acl(dest_se_tpg, 3548 dest_node_acl = __core_tpg_get_initiator_node_acl(dest_se_tpg,
3551 initiator_str); 3549 initiator_str);
3552 if (dest_node_acl) { 3550 if (dest_node_acl) {
3553 atomic_inc(&dest_node_acl->acl_pr_ref_count); 3551 atomic_inc(&dest_node_acl->acl_pr_ref_count);
3554 smp_mb__after_atomic_inc(); 3552 smp_mb__after_atomic_inc();
3555 } 3553 }
3556 spin_unlock_irq(&dest_se_tpg->acl_node_lock); 3554 spin_unlock_irq(&dest_se_tpg->acl_node_lock);
3557 3555
3558 if (!dest_node_acl) { 3556 if (!dest_node_acl) {
3559 pr_err("Unable to locate %s dest_node_acl for" 3557 pr_err("Unable to locate %s dest_node_acl for"
3560 " TransportID%s\n", dest_tf_ops->get_fabric_name(), 3558 " TransportID%s\n", dest_tf_ops->get_fabric_name(),
3561 initiator_str); 3559 initiator_str);
3562 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST; 3560 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST;
3563 ret = -EINVAL; 3561 ret = -EINVAL;
3564 goto out; 3562 goto out;
3565 } 3563 }
3566 ret = core_scsi3_nodeacl_depend_item(dest_node_acl); 3564 ret = core_scsi3_nodeacl_depend_item(dest_node_acl);
3567 if (ret != 0) { 3565 if (ret != 0) {
3568 pr_err("core_scsi3_nodeacl_depend_item() for" 3566 pr_err("core_scsi3_nodeacl_depend_item() for"
3569 " dest_node_acl\n"); 3567 " dest_node_acl\n");
3570 atomic_dec(&dest_node_acl->acl_pr_ref_count); 3568 atomic_dec(&dest_node_acl->acl_pr_ref_count);
3571 smp_mb__after_atomic_dec(); 3569 smp_mb__after_atomic_dec();
3572 dest_node_acl = NULL; 3570 dest_node_acl = NULL;
3573 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST; 3571 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST;
3574 ret = -EINVAL; 3572 ret = -EINVAL;
3575 goto out; 3573 goto out;
3576 } 3574 }
3577 #if 0 3575 #if 0
3578 pr_debug("SPC-3 PR REGISTER_AND_MOVE: Found %s dest_node_acl:" 3576 pr_debug("SPC-3 PR REGISTER_AND_MOVE: Found %s dest_node_acl:"
3579 " %s from TransportID\n", dest_tf_ops->get_fabric_name(), 3577 " %s from TransportID\n", dest_tf_ops->get_fabric_name(),
3580 dest_node_acl->initiatorname); 3578 dest_node_acl->initiatorname);
3581 #endif 3579 #endif
3582 /* 3580 /*
3583 * Locate the struct se_dev_entry pointer for the matching RELATIVE TARGET 3581 * Locate the struct se_dev_entry pointer for the matching RELATIVE TARGET
3584 * PORT IDENTIFIER. 3582 * PORT IDENTIFIER.
3585 */ 3583 */
3586 dest_se_deve = core_get_se_deve_from_rtpi(dest_node_acl, rtpi); 3584 dest_se_deve = core_get_se_deve_from_rtpi(dest_node_acl, rtpi);
3587 if (!dest_se_deve) { 3585 if (!dest_se_deve) {
3588 pr_err("Unable to locate %s dest_se_deve from RTPI:" 3586 pr_err("Unable to locate %s dest_se_deve from RTPI:"
3589 " %hu\n", dest_tf_ops->get_fabric_name(), rtpi); 3587 " %hu\n", dest_tf_ops->get_fabric_name(), rtpi);
3590 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST; 3588 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST;
3591 ret = -EINVAL; 3589 ret = -EINVAL;
3592 goto out; 3590 goto out;
3593 } 3591 }
3594 3592
3595 ret = core_scsi3_lunacl_depend_item(dest_se_deve); 3593 ret = core_scsi3_lunacl_depend_item(dest_se_deve);
3596 if (ret < 0) { 3594 if (ret < 0) {
3597 pr_err("core_scsi3_lunacl_depend_item() failed\n"); 3595 pr_err("core_scsi3_lunacl_depend_item() failed\n");
3598 atomic_dec(&dest_se_deve->pr_ref_count); 3596 atomic_dec(&dest_se_deve->pr_ref_count);
3599 smp_mb__after_atomic_dec(); 3597 smp_mb__after_atomic_dec();
3600 dest_se_deve = NULL; 3598 dest_se_deve = NULL;
3601 cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; 3599 cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
3602 ret = -EINVAL; 3600 ret = -EINVAL;
3603 goto out; 3601 goto out;
3604 } 3602 }
3605 #if 0 3603 #if 0
3606 pr_debug("SPC-3 PR REGISTER_AND_MOVE: Located %s node %s LUN" 3604 pr_debug("SPC-3 PR REGISTER_AND_MOVE: Located %s node %s LUN"
3607 " ACL for dest_se_deve->mapped_lun: %u\n", 3605 " ACL for dest_se_deve->mapped_lun: %u\n",
3608 dest_tf_ops->get_fabric_name(), dest_node_acl->initiatorname, 3606 dest_tf_ops->get_fabric_name(), dest_node_acl->initiatorname,
3609 dest_se_deve->mapped_lun); 3607 dest_se_deve->mapped_lun);
3610 #endif 3608 #endif
3611 /* 3609 /*
3612 * A persistent reservation needs to already existing in order to 3610 * A persistent reservation needs to already existing in order to
3613 * successfully complete the REGISTER_AND_MOVE service action.. 3611 * successfully complete the REGISTER_AND_MOVE service action..
3614 */ 3612 */
3615 spin_lock(&dev->dev_reservation_lock); 3613 spin_lock(&dev->dev_reservation_lock);
3616 pr_res_holder = dev->dev_pr_res_holder; 3614 pr_res_holder = dev->dev_pr_res_holder;
3617 if (!pr_res_holder) { 3615 if (!pr_res_holder) {
3618 pr_warn("SPC-3 PR REGISTER_AND_MOVE: No reservation" 3616 pr_warn("SPC-3 PR REGISTER_AND_MOVE: No reservation"
3619 " currently held\n"); 3617 " currently held\n");
3620 spin_unlock(&dev->dev_reservation_lock); 3618 spin_unlock(&dev->dev_reservation_lock);
3621 cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD; 3619 cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD;
3622 ret = -EINVAL; 3620 ret = -EINVAL;
3623 goto out; 3621 goto out;
3624 } 3622 }
3625 /* 3623 /*
3626 * The received on I_T Nexus must be the reservation holder. 3624 * The received on I_T Nexus must be the reservation holder.
3627 * 3625 *
3628 * From spc4r17 section 5.7.8 Table 50 -- 3626 * From spc4r17 section 5.7.8 Table 50 --
3629 * Register behaviors for a REGISTER AND MOVE service action 3627 * Register behaviors for a REGISTER AND MOVE service action
3630 */ 3628 */
3631 if (pr_res_holder != pr_reg) { 3629 if (pr_res_holder != pr_reg) {
3632 pr_warn("SPC-3 PR REGISTER_AND_MOVE: Calling I_T" 3630 pr_warn("SPC-3 PR REGISTER_AND_MOVE: Calling I_T"
3633 " Nexus is not reservation holder\n"); 3631 " Nexus is not reservation holder\n");
3634 spin_unlock(&dev->dev_reservation_lock); 3632 spin_unlock(&dev->dev_reservation_lock);
3635 cmd->scsi_sense_reason = TCM_RESERVATION_CONFLICT; 3633 cmd->scsi_sense_reason = TCM_RESERVATION_CONFLICT;
3636 ret = -EINVAL; 3634 ret = -EINVAL;
3637 goto out; 3635 goto out;
3638 } 3636 }
3639 /* 3637 /*
3640 * From spc4r17 section 5.7.8: registering and moving reservation 3638 * From spc4r17 section 5.7.8: registering and moving reservation
3641 * 3639 *
3642 * If a PERSISTENT RESERVE OUT command with a REGISTER AND MOVE service 3640 * If a PERSISTENT RESERVE OUT command with a REGISTER AND MOVE service
3643 * action is received and the established persistent reservation is a 3641 * action is received and the established persistent reservation is a
3644 * Write Exclusive - All Registrants type or Exclusive Access - 3642 * Write Exclusive - All Registrants type or Exclusive Access -
3645 * All Registrants type reservation, then the command shall be completed 3643 * All Registrants type reservation, then the command shall be completed
3646 * with RESERVATION CONFLICT status. 3644 * with RESERVATION CONFLICT status.
3647 */ 3645 */
3648 if ((pr_res_holder->pr_res_type == PR_TYPE_WRITE_EXCLUSIVE_ALLREG) || 3646 if ((pr_res_holder->pr_res_type == PR_TYPE_WRITE_EXCLUSIVE_ALLREG) ||
3649 (pr_res_holder->pr_res_type == PR_TYPE_EXCLUSIVE_ACCESS_ALLREG)) { 3647 (pr_res_holder->pr_res_type == PR_TYPE_EXCLUSIVE_ACCESS_ALLREG)) {
3650 pr_warn("SPC-3 PR REGISTER_AND_MOVE: Unable to move" 3648 pr_warn("SPC-3 PR REGISTER_AND_MOVE: Unable to move"
3651 " reservation for type: %s\n", 3649 " reservation for type: %s\n",
3652 core_scsi3_pr_dump_type(pr_res_holder->pr_res_type)); 3650 core_scsi3_pr_dump_type(pr_res_holder->pr_res_type));
3653 spin_unlock(&dev->dev_reservation_lock); 3651 spin_unlock(&dev->dev_reservation_lock);
3654 cmd->scsi_sense_reason = TCM_RESERVATION_CONFLICT; 3652 cmd->scsi_sense_reason = TCM_RESERVATION_CONFLICT;
3655 ret = -EINVAL; 3653 ret = -EINVAL;
3656 goto out; 3654 goto out;
3657 } 3655 }
3658 pr_res_nacl = pr_res_holder->pr_reg_nacl; 3656 pr_res_nacl = pr_res_holder->pr_reg_nacl;
3659 /* 3657 /*
3660 * b) Ignore the contents of the (received) SCOPE and TYPE fields; 3658 * b) Ignore the contents of the (received) SCOPE and TYPE fields;
3661 */ 3659 */
3662 type = pr_res_holder->pr_res_type; 3660 type = pr_res_holder->pr_res_type;
3663 scope = pr_res_holder->pr_res_type; 3661 scope = pr_res_holder->pr_res_type;
3664 /* 3662 /*
3665 * c) Associate the reservation key specified in the SERVICE ACTION 3663 * c) Associate the reservation key specified in the SERVICE ACTION
3666 * RESERVATION KEY field with the I_T nexus specified as the 3664 * RESERVATION KEY field with the I_T nexus specified as the
3667 * destination of the register and move, where: 3665 * destination of the register and move, where:
3668 * A) The I_T nexus is specified by the TransportID and the 3666 * A) The I_T nexus is specified by the TransportID and the
3669 * RELATIVE TARGET PORT IDENTIFIER field (see 6.14.4); and 3667 * RELATIVE TARGET PORT IDENTIFIER field (see 6.14.4); and
3670 * B) Regardless of the TransportID format used, the association for 3668 * B) Regardless of the TransportID format used, the association for
3671 * the initiator port is based on either the initiator port name 3669 * the initiator port is based on either the initiator port name
3672 * (see 3.1.71) on SCSI transport protocols where port names are 3670 * (see 3.1.71) on SCSI transport protocols where port names are
3673 * required or the initiator port identifier (see 3.1.70) on SCSI 3671 * required or the initiator port identifier (see 3.1.70) on SCSI
3674 * transport protocols where port names are not required; 3672 * transport protocols where port names are not required;
3675 * d) Register the reservation key specified in the SERVICE ACTION 3673 * d) Register the reservation key specified in the SERVICE ACTION
3676 * RESERVATION KEY field; 3674 * RESERVATION KEY field;
3677 * e) Retain the reservation key specified in the SERVICE ACTION 3675 * e) Retain the reservation key specified in the SERVICE ACTION
3678 * RESERVATION KEY field and associated information; 3676 * RESERVATION KEY field and associated information;
3679 * 3677 *
3680 * Also, It is not an error for a REGISTER AND MOVE service action to 3678 * Also, It is not an error for a REGISTER AND MOVE service action to
3681 * register an I_T nexus that is already registered with the same 3679 * register an I_T nexus that is already registered with the same
3682 * reservation key or a different reservation key. 3680 * reservation key or a different reservation key.
3683 */ 3681 */
3684 dest_pr_reg = __core_scsi3_locate_pr_reg(dev, dest_node_acl, 3682 dest_pr_reg = __core_scsi3_locate_pr_reg(dev, dest_node_acl,
3685 iport_ptr); 3683 iport_ptr);
3686 if (!dest_pr_reg) { 3684 if (!dest_pr_reg) {
3687 ret = core_scsi3_alloc_registration(cmd->se_dev, 3685 ret = core_scsi3_alloc_registration(cmd->se_dev,
3688 dest_node_acl, dest_se_deve, iport_ptr, 3686 dest_node_acl, dest_se_deve, iport_ptr,
3689 sa_res_key, 0, aptpl, 2, 1); 3687 sa_res_key, 0, aptpl, 2, 1);
3690 if (ret != 0) { 3688 if (ret != 0) {
3691 spin_unlock(&dev->dev_reservation_lock); 3689 spin_unlock(&dev->dev_reservation_lock);
3692 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST; 3690 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST;
3693 ret = -EINVAL; 3691 ret = -EINVAL;
3694 goto out; 3692 goto out;
3695 } 3693 }
3696 dest_pr_reg = __core_scsi3_locate_pr_reg(dev, dest_node_acl, 3694 dest_pr_reg = __core_scsi3_locate_pr_reg(dev, dest_node_acl,
3697 iport_ptr); 3695 iport_ptr);
3698 new_reg = 1; 3696 new_reg = 1;
3699 } 3697 }
3700 /* 3698 /*
3701 * f) Release the persistent reservation for the persistent reservation 3699 * f) Release the persistent reservation for the persistent reservation
3702 * holder (i.e., the I_T nexus on which the 3700 * holder (i.e., the I_T nexus on which the
3703 */ 3701 */
3704 __core_scsi3_complete_pro_release(dev, pr_res_nacl, 3702 __core_scsi3_complete_pro_release(dev, pr_res_nacl,
3705 dev->dev_pr_res_holder, 0); 3703 dev->dev_pr_res_holder, 0);
3706 /* 3704 /*
3707 * g) Move the persistent reservation to the specified I_T nexus using 3705 * g) Move the persistent reservation to the specified I_T nexus using
3708 * the same scope and type as the persistent reservation released in 3706 * the same scope and type as the persistent reservation released in
3709 * item f); and 3707 * item f); and
3710 */ 3708 */
3711 dev->dev_pr_res_holder = dest_pr_reg; 3709 dev->dev_pr_res_holder = dest_pr_reg;
3712 dest_pr_reg->pr_res_holder = 1; 3710 dest_pr_reg->pr_res_holder = 1;
3713 dest_pr_reg->pr_res_type = type; 3711 dest_pr_reg->pr_res_type = type;
3714 pr_reg->pr_res_scope = scope; 3712 pr_reg->pr_res_scope = scope;
3715 prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0], 3713 prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0],
3716 PR_REG_ISID_ID_LEN); 3714 PR_REG_ISID_ID_LEN);
3717 /* 3715 /*
3718 * Increment PRGeneration for existing registrations.. 3716 * Increment PRGeneration for existing registrations..
3719 */ 3717 */
3720 if (!new_reg) 3718 if (!new_reg)
3721 dest_pr_reg->pr_res_generation = pr_tmpl->pr_generation++; 3719 dest_pr_reg->pr_res_generation = pr_tmpl->pr_generation++;
3722 spin_unlock(&dev->dev_reservation_lock); 3720 spin_unlock(&dev->dev_reservation_lock);
3723 3721
3724 pr_debug("SPC-3 PR [%s] Service Action: REGISTER_AND_MOVE" 3722 pr_debug("SPC-3 PR [%s] Service Action: REGISTER_AND_MOVE"
3725 " created new reservation holder TYPE: %s on object RTPI:" 3723 " created new reservation holder TYPE: %s on object RTPI:"
3726 " %hu PRGeneration: 0x%08x\n", dest_tf_ops->get_fabric_name(), 3724 " %hu PRGeneration: 0x%08x\n", dest_tf_ops->get_fabric_name(),
3727 core_scsi3_pr_dump_type(type), rtpi, 3725 core_scsi3_pr_dump_type(type), rtpi,
3728 dest_pr_reg->pr_res_generation); 3726 dest_pr_reg->pr_res_generation);
3729 pr_debug("SPC-3 PR Successfully moved reservation from" 3727 pr_debug("SPC-3 PR Successfully moved reservation from"
3730 " %s Fabric Node: %s%s -> %s Fabric Node: %s %s\n", 3728 " %s Fabric Node: %s%s -> %s Fabric Node: %s %s\n",
3731 tf_ops->get_fabric_name(), pr_reg_nacl->initiatorname, 3729 tf_ops->get_fabric_name(), pr_reg_nacl->initiatorname,
3732 (prf_isid) ? &i_buf[0] : "", dest_tf_ops->get_fabric_name(), 3730 (prf_isid) ? &i_buf[0] : "", dest_tf_ops->get_fabric_name(),
3733 dest_node_acl->initiatorname, (iport_ptr != NULL) ? 3731 dest_node_acl->initiatorname, (iport_ptr != NULL) ?
3734 iport_ptr : ""); 3732 iport_ptr : "");
3735 /* 3733 /*
3736 * It is now safe to release configfs group dependencies for destination 3734 * It is now safe to release configfs group dependencies for destination
3737 * of Transport ID Initiator Device/Port Identifier 3735 * of Transport ID Initiator Device/Port Identifier
3738 */ 3736 */
3739 core_scsi3_lunacl_undepend_item(dest_se_deve); 3737 core_scsi3_lunacl_undepend_item(dest_se_deve);
3740 core_scsi3_nodeacl_undepend_item(dest_node_acl); 3738 core_scsi3_nodeacl_undepend_item(dest_node_acl);
3741 core_scsi3_tpg_undepend_item(dest_se_tpg); 3739 core_scsi3_tpg_undepend_item(dest_se_tpg);
3742 /* 3740 /*
3743 * h) If the UNREG bit is set to one, unregister (see 5.7.11.3) the I_T 3741 * h) If the UNREG bit is set to one, unregister (see 5.7.11.3) the I_T
3744 * nexus on which PERSISTENT RESERVE OUT command was received. 3742 * nexus on which PERSISTENT RESERVE OUT command was received.
3745 */ 3743 */
3746 if (unreg) { 3744 if (unreg) {
3747 spin_lock(&pr_tmpl->registration_lock); 3745 spin_lock(&pr_tmpl->registration_lock);
3748 __core_scsi3_free_registration(dev, pr_reg, NULL, 1); 3746 __core_scsi3_free_registration(dev, pr_reg, NULL, 1);
3749 spin_unlock(&pr_tmpl->registration_lock); 3747 spin_unlock(&pr_tmpl->registration_lock);
3750 } else 3748 } else
3751 core_scsi3_put_pr_reg(pr_reg); 3749 core_scsi3_put_pr_reg(pr_reg);
3752 3750
3753 /* 3751 /*
3754 * Clear the APTPL metadata if APTPL has been disabled, otherwise 3752 * Clear the APTPL metadata if APTPL has been disabled, otherwise
3755 * write out the updated metadata to struct file for this SCSI device. 3753 * write out the updated metadata to struct file for this SCSI device.
3756 */ 3754 */
3757 if (!aptpl) { 3755 if (!aptpl) {
3758 pr_tmpl->pr_aptpl_active = 0; 3756 pr_tmpl->pr_aptpl_active = 0;
3759 core_scsi3_update_and_write_aptpl(cmd->se_dev, NULL, 0); 3757 core_scsi3_update_and_write_aptpl(cmd->se_dev, NULL, 0);
3760 pr_debug("SPC-3 PR: Set APTPL Bit Deactivated for" 3758 pr_debug("SPC-3 PR: Set APTPL Bit Deactivated for"
3761 " REGISTER_AND_MOVE\n"); 3759 " REGISTER_AND_MOVE\n");
3762 } else { 3760 } else {
3763 pr_tmpl->pr_aptpl_active = 1; 3761 pr_tmpl->pr_aptpl_active = 1;
3764 ret = core_scsi3_update_and_write_aptpl(cmd->se_dev, 3762 ret = core_scsi3_update_and_write_aptpl(cmd->se_dev,
3765 &dest_pr_reg->pr_aptpl_buf[0], 3763 &dest_pr_reg->pr_aptpl_buf[0],
3766 pr_tmpl->pr_aptpl_buf_len); 3764 pr_tmpl->pr_aptpl_buf_len);
3767 if (!ret) 3765 if (!ret)
3768 pr_debug("SPC-3 PR: Set APTPL Bit Activated for" 3766 pr_debug("SPC-3 PR: Set APTPL Bit Activated for"
3769 " REGISTER_AND_MOVE\n"); 3767 " REGISTER_AND_MOVE\n");
3770 } 3768 }
3771 3769
3772 transport_kunmap_data_sg(cmd); 3770 transport_kunmap_data_sg(cmd);
3773 3771
3774 core_scsi3_put_pr_reg(dest_pr_reg); 3772 core_scsi3_put_pr_reg(dest_pr_reg);
3775 return 0; 3773 return 0;
3776 out: 3774 out:
3777 if (buf) 3775 if (buf)
3778 transport_kunmap_data_sg(cmd); 3776 transport_kunmap_data_sg(cmd);
3779 if (dest_se_deve) 3777 if (dest_se_deve)
3780 core_scsi3_lunacl_undepend_item(dest_se_deve); 3778 core_scsi3_lunacl_undepend_item(dest_se_deve);
3781 if (dest_node_acl) 3779 if (dest_node_acl)
3782 core_scsi3_nodeacl_undepend_item(dest_node_acl); 3780 core_scsi3_nodeacl_undepend_item(dest_node_acl);
3783 core_scsi3_tpg_undepend_item(dest_se_tpg); 3781 core_scsi3_tpg_undepend_item(dest_se_tpg);
3784 core_scsi3_put_pr_reg(pr_reg); 3782 core_scsi3_put_pr_reg(pr_reg);
3785 return ret; 3783 return ret;
3786 } 3784 }
3787 3785
3788 static unsigned long long core_scsi3_extract_reservation_key(unsigned char *cdb) 3786 static unsigned long long core_scsi3_extract_reservation_key(unsigned char *cdb)
3789 { 3787 {
3790 unsigned int __v1, __v2; 3788 unsigned int __v1, __v2;
3791 3789
3792 __v1 = (cdb[0] << 24) | (cdb[1] << 16) | (cdb[2] << 8) | cdb[3]; 3790 __v1 = (cdb[0] << 24) | (cdb[1] << 16) | (cdb[2] << 8) | cdb[3];
3793 __v2 = (cdb[4] << 24) | (cdb[5] << 16) | (cdb[6] << 8) | cdb[7]; 3791 __v2 = (cdb[4] << 24) | (cdb[5] << 16) | (cdb[6] << 8) | cdb[7];
3794 3792
3795 return ((unsigned long long)__v2) | (unsigned long long)__v1 << 32; 3793 return ((unsigned long long)__v2) | (unsigned long long)__v1 << 32;
3796 } 3794 }
3797 3795
3798 /* 3796 /*
3799 * See spc4r17 section 6.14 Table 170 3797 * See spc4r17 section 6.14 Table 170
3800 */ 3798 */
3801 int target_scsi3_emulate_pr_out(struct se_task *task) 3799 int target_scsi3_emulate_pr_out(struct se_task *task)
3802 { 3800 {
3803 struct se_cmd *cmd = task->task_se_cmd; 3801 struct se_cmd *cmd = task->task_se_cmd;
3804 unsigned char *cdb = &cmd->t_task_cdb[0]; 3802 unsigned char *cdb = &cmd->t_task_cdb[0];
3805 unsigned char *buf; 3803 unsigned char *buf;
3806 u64 res_key, sa_res_key; 3804 u64 res_key, sa_res_key;
3807 int sa, scope, type, aptpl; 3805 int sa, scope, type, aptpl;
3808 int spec_i_pt = 0, all_tg_pt = 0, unreg = 0; 3806 int spec_i_pt = 0, all_tg_pt = 0, unreg = 0;
3809 int ret; 3807 int ret;
3810 3808
3811 /* 3809 /*
3812 * Following spc2r20 5.5.1 Reservations overview: 3810 * Following spc2r20 5.5.1 Reservations overview:
3813 * 3811 *
3814 * If a logical unit has been reserved by any RESERVE command and is 3812 * If a logical unit has been reserved by any RESERVE command and is
3815 * still reserved by any initiator, all PERSISTENT RESERVE IN and all 3813 * still reserved by any initiator, all PERSISTENT RESERVE IN and all
3816 * PERSISTENT RESERVE OUT commands shall conflict regardless of 3814 * PERSISTENT RESERVE OUT commands shall conflict regardless of
3817 * initiator or service action and shall terminate with a RESERVATION 3815 * initiator or service action and shall terminate with a RESERVATION
3818 * CONFLICT status. 3816 * CONFLICT status.
3819 */ 3817 */
3820 if (cmd->se_dev->dev_flags & DF_SPC2_RESERVATIONS) { 3818 if (cmd->se_dev->dev_flags & DF_SPC2_RESERVATIONS) {
3821 pr_err("Received PERSISTENT_RESERVE CDB while legacy" 3819 pr_err("Received PERSISTENT_RESERVE CDB while legacy"
3822 " SPC-2 reservation is held, returning" 3820 " SPC-2 reservation is held, returning"
3823 " RESERVATION_CONFLICT\n"); 3821 " RESERVATION_CONFLICT\n");
3824 cmd->scsi_sense_reason = TCM_RESERVATION_CONFLICT; 3822 cmd->scsi_sense_reason = TCM_RESERVATION_CONFLICT;
3825 ret = EINVAL; 3823 ret = EINVAL;
3826 goto out; 3824 goto out;
3827 } 3825 }
3828 3826
3829 /* 3827 /*
3830 * FIXME: A NULL struct se_session pointer means an this is not coming from 3828 * FIXME: A NULL struct se_session pointer means an this is not coming from
3831 * a $FABRIC_MOD's nexus, but from internal passthrough ops. 3829 * a $FABRIC_MOD's nexus, but from internal passthrough ops.
3832 */ 3830 */
3833 if (!cmd->se_sess) { 3831 if (!cmd->se_sess) {
3834 cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; 3832 cmd->scsi_sense_reason = TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
3835 return -EINVAL; 3833 return -EINVAL;
3836 } 3834 }
3837 3835
3838 if (cmd->data_length < 24) { 3836 if (cmd->data_length < 24) {
3839 pr_warn("SPC-PR: Received PR OUT parameter list" 3837 pr_warn("SPC-PR: Received PR OUT parameter list"
3840 " length too small: %u\n", cmd->data_length); 3838 " length too small: %u\n", cmd->data_length);
3841 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST; 3839 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST;
3842 ret = -EINVAL; 3840 ret = -EINVAL;
3843 goto out; 3841 goto out;
3844 } 3842 }
3845 /* 3843 /*
3846 * From the PERSISTENT_RESERVE_OUT command descriptor block (CDB) 3844 * From the PERSISTENT_RESERVE_OUT command descriptor block (CDB)
3847 */ 3845 */
3848 sa = (cdb[1] & 0x1f); 3846 sa = (cdb[1] & 0x1f);
3849 scope = (cdb[2] & 0xf0); 3847 scope = (cdb[2] & 0xf0);
3850 type = (cdb[2] & 0x0f); 3848 type = (cdb[2] & 0x0f);
3851 3849
3852 buf = transport_kmap_data_sg(cmd); 3850 buf = transport_kmap_data_sg(cmd);
3853 /* 3851 /*
3854 * From PERSISTENT_RESERVE_OUT parameter list (payload) 3852 * From PERSISTENT_RESERVE_OUT parameter list (payload)
3855 */ 3853 */
3856 res_key = core_scsi3_extract_reservation_key(&buf[0]); 3854 res_key = core_scsi3_extract_reservation_key(&buf[0]);
3857 sa_res_key = core_scsi3_extract_reservation_key(&buf[8]); 3855 sa_res_key = core_scsi3_extract_reservation_key(&buf[8]);
3858 /* 3856 /*
3859 * REGISTER_AND_MOVE uses a different SA parameter list containing 3857 * REGISTER_AND_MOVE uses a different SA parameter list containing
3860 * SCSI TransportIDs. 3858 * SCSI TransportIDs.
3861 */ 3859 */
3862 if (sa != PRO_REGISTER_AND_MOVE) { 3860 if (sa != PRO_REGISTER_AND_MOVE) {
3863 spec_i_pt = (buf[20] & 0x08); 3861 spec_i_pt = (buf[20] & 0x08);
3864 all_tg_pt = (buf[20] & 0x04); 3862 all_tg_pt = (buf[20] & 0x04);
3865 aptpl = (buf[20] & 0x01); 3863 aptpl = (buf[20] & 0x01);
3866 } else { 3864 } else {
3867 aptpl = (buf[17] & 0x01); 3865 aptpl = (buf[17] & 0x01);
3868 unreg = (buf[17] & 0x02); 3866 unreg = (buf[17] & 0x02);
3869 } 3867 }
3870 transport_kunmap_data_sg(cmd); 3868 transport_kunmap_data_sg(cmd);
3871 buf = NULL; 3869 buf = NULL;
3872 3870
3873 /* 3871 /*
3874 * SPEC_I_PT=1 is only valid for Service action: REGISTER 3872 * SPEC_I_PT=1 is only valid for Service action: REGISTER
3875 */ 3873 */
3876 if (spec_i_pt && ((cdb[1] & 0x1f) != PRO_REGISTER)) { 3874 if (spec_i_pt && ((cdb[1] & 0x1f) != PRO_REGISTER)) {
3877 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST; 3875 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST;
3878 ret = -EINVAL; 3876 ret = -EINVAL;
3879 goto out; 3877 goto out;
3880 } 3878 }
3881 3879
3882 /* 3880 /*
3883 * From spc4r17 section 6.14: 3881 * From spc4r17 section 6.14:
3884 * 3882 *
3885 * If the SPEC_I_PT bit is set to zero, the service action is not 3883 * If the SPEC_I_PT bit is set to zero, the service action is not
3886 * REGISTER AND MOVE, and the parameter list length is not 24, then 3884 * REGISTER AND MOVE, and the parameter list length is not 24, then
3887 * the command shall be terminated with CHECK CONDITION status, with 3885 * the command shall be terminated with CHECK CONDITION status, with
3888 * the sense key set to ILLEGAL REQUEST, and the additional sense 3886 * the sense key set to ILLEGAL REQUEST, and the additional sense
3889 * code set to PARAMETER LIST LENGTH ERROR. 3887 * code set to PARAMETER LIST LENGTH ERROR.
3890 */ 3888 */
3891 if (!spec_i_pt && ((cdb[1] & 0x1f) != PRO_REGISTER_AND_MOVE) && 3889 if (!spec_i_pt && ((cdb[1] & 0x1f) != PRO_REGISTER_AND_MOVE) &&
3892 (cmd->data_length != 24)) { 3890 (cmd->data_length != 24)) {
3893 pr_warn("SPC-PR: Received PR OUT illegal parameter" 3891 pr_warn("SPC-PR: Received PR OUT illegal parameter"
3894 " list length: %u\n", cmd->data_length); 3892 " list length: %u\n", cmd->data_length);
3895 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST; 3893 cmd->scsi_sense_reason = TCM_INVALID_PARAMETER_LIST;
3896 ret = -EINVAL; 3894 ret = -EINVAL;
3897 goto out; 3895 goto out;
3898 } 3896 }
3899 /* 3897 /*
3900 * (core_scsi3_emulate_pro_* function parameters 3898 * (core_scsi3_emulate_pro_* function parameters
3901 * are defined by spc4r17 Table 174: 3899 * are defined by spc4r17 Table 174:
3902 * PERSISTENT_RESERVE_OUT service actions and valid parameters. 3900 * PERSISTENT_RESERVE_OUT service actions and valid parameters.
3903 */ 3901 */
3904 switch (sa) { 3902 switch (sa) {
3905 case PRO_REGISTER: 3903 case PRO_REGISTER:
3906 ret = core_scsi3_emulate_pro_register(cmd, 3904 ret = core_scsi3_emulate_pro_register(cmd,
3907 res_key, sa_res_key, aptpl, all_tg_pt, spec_i_pt, 0); 3905 res_key, sa_res_key, aptpl, all_tg_pt, spec_i_pt, 0);
3908 break; 3906 break;
3909 case PRO_RESERVE: 3907 case PRO_RESERVE:
3910 ret = core_scsi3_emulate_pro_reserve(cmd, type, scope, res_key); 3908 ret = core_scsi3_emulate_pro_reserve(cmd, type, scope, res_key);
3911 break; 3909 break;
3912 case PRO_RELEASE: 3910 case PRO_RELEASE:
3913 ret = core_scsi3_emulate_pro_release(cmd, type, scope, res_key); 3911 ret = core_scsi3_emulate_pro_release(cmd, type, scope, res_key);
3914 break; 3912 break;
3915 case PRO_CLEAR: 3913 case PRO_CLEAR:
3916 ret = core_scsi3_emulate_pro_clear(cmd, res_key); 3914 ret = core_scsi3_emulate_pro_clear(cmd, res_key);
3917 break; 3915 break;
3918 case PRO_PREEMPT: 3916 case PRO_PREEMPT:
3919 ret = core_scsi3_emulate_pro_preempt(cmd, type, scope, 3917 ret = core_scsi3_emulate_pro_preempt(cmd, type, scope,
3920 res_key, sa_res_key, 0); 3918 res_key, sa_res_key, 0);
3921 break; 3919 break;
3922 case PRO_PREEMPT_AND_ABORT: 3920 case PRO_PREEMPT_AND_ABORT:
3923 ret = core_scsi3_emulate_pro_preempt(cmd, type, scope, 3921 ret = core_scsi3_emulate_pro_preempt(cmd, type, scope,
3924 res_key, sa_res_key, 1); 3922 res_key, sa_res_key, 1);
3925 break; 3923 break;
3926 case PRO_REGISTER_AND_IGNORE_EXISTING_KEY: 3924 case PRO_REGISTER_AND_IGNORE_EXISTING_KEY:
3927 ret = core_scsi3_emulate_pro_register(cmd, 3925 ret = core_scsi3_emulate_pro_register(cmd,
3928 0, sa_res_key, aptpl, all_tg_pt, spec_i_pt, 1); 3926 0, sa_res_key, aptpl, all_tg_pt, spec_i_pt, 1);
3929 break; 3927 break;
3930 case PRO_REGISTER_AND_MOVE: 3928 case PRO_REGISTER_AND_MOVE:
3931 ret = core_scsi3_emulate_pro_register_and_move(cmd, res_key, 3929 ret = core_scsi3_emulate_pro_register_and_move(cmd, res_key,
3932 sa_res_key, aptpl, unreg); 3930 sa_res_key, aptpl, unreg);
3933 break; 3931 break;
3934 default: 3932 default:
3935 pr_err("Unknown PERSISTENT_RESERVE_OUT service" 3933 pr_err("Unknown PERSISTENT_RESERVE_OUT service"
3936 " action: 0x%02x\n", cdb[1] & 0x1f); 3934 " action: 0x%02x\n", cdb[1] & 0x1f);
3937 cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD; 3935 cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD;
3938 ret = -EINVAL; 3936 ret = -EINVAL;
3939 break; 3937 break;
3940 } 3938 }
3941 3939
3942 out: 3940 out:
3943 if (!ret) { 3941 if (!ret) {
3944 task->task_scsi_status = GOOD; 3942 task->task_scsi_status = GOOD;
3945 transport_complete_task(task, 1); 3943 transport_complete_task(task, 1);
3946 } 3944 }
3947 return ret; 3945 return ret;
3948 } 3946 }
3949 3947
3950 /* 3948 /*
3951 * PERSISTENT_RESERVE_IN Service Action READ_KEYS 3949 * PERSISTENT_RESERVE_IN Service Action READ_KEYS
3952 * 3950 *
3953 * See spc4r17 section 5.7.6.2 and section 6.13.2, Table 160 3951 * See spc4r17 section 5.7.6.2 and section 6.13.2, Table 160
3954 */ 3952 */
3955 static int core_scsi3_pri_read_keys(struct se_cmd *cmd) 3953 static int core_scsi3_pri_read_keys(struct se_cmd *cmd)
3956 { 3954 {
3957 struct se_device *se_dev = cmd->se_dev; 3955 struct se_device *se_dev = cmd->se_dev;
3958 struct se_subsystem_dev *su_dev = se_dev->se_sub_dev; 3956 struct se_subsystem_dev *su_dev = se_dev->se_sub_dev;
3959 struct t10_pr_registration *pr_reg; 3957 struct t10_pr_registration *pr_reg;
3960 unsigned char *buf; 3958 unsigned char *buf;
3961 u32 add_len = 0, off = 8; 3959 u32 add_len = 0, off = 8;
3962 3960
3963 if (cmd->data_length < 8) { 3961 if (cmd->data_length < 8) {
3964 pr_err("PRIN SA READ_KEYS SCSI Data Length: %u" 3962 pr_err("PRIN SA READ_KEYS SCSI Data Length: %u"
3965 " too small\n", cmd->data_length); 3963 " too small\n", cmd->data_length);
3966 cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD; 3964 cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD;
3967 return -EINVAL; 3965 return -EINVAL;
3968 } 3966 }
3969 3967
3970 buf = transport_kmap_data_sg(cmd); 3968 buf = transport_kmap_data_sg(cmd);
3971 buf[0] = ((su_dev->t10_pr.pr_generation >> 24) & 0xff); 3969 buf[0] = ((su_dev->t10_pr.pr_generation >> 24) & 0xff);
3972 buf[1] = ((su_dev->t10_pr.pr_generation >> 16) & 0xff); 3970 buf[1] = ((su_dev->t10_pr.pr_generation >> 16) & 0xff);
3973 buf[2] = ((su_dev->t10_pr.pr_generation >> 8) & 0xff); 3971 buf[2] = ((su_dev->t10_pr.pr_generation >> 8) & 0xff);
3974 buf[3] = (su_dev->t10_pr.pr_generation & 0xff); 3972 buf[3] = (su_dev->t10_pr.pr_generation & 0xff);
3975 3973
3976 spin_lock(&su_dev->t10_pr.registration_lock); 3974 spin_lock(&su_dev->t10_pr.registration_lock);
3977 list_for_each_entry(pr_reg, &su_dev->t10_pr.registration_list, 3975 list_for_each_entry(pr_reg, &su_dev->t10_pr.registration_list,
3978 pr_reg_list) { 3976 pr_reg_list) {
3979 /* 3977 /*
3980 * Check for overflow of 8byte PRI READ_KEYS payload and 3978 * Check for overflow of 8byte PRI READ_KEYS payload and
3981 * next reservation key list descriptor. 3979 * next reservation key list descriptor.
3982 */ 3980 */
3983 if ((add_len + 8) > (cmd->data_length - 8)) 3981 if ((add_len + 8) > (cmd->data_length - 8))
3984 break; 3982 break;
3985 3983
3986 buf[off++] = ((pr_reg->pr_res_key >> 56) & 0xff); 3984 buf[off++] = ((pr_reg->pr_res_key >> 56) & 0xff);
3987 buf[off++] = ((pr_reg->pr_res_key >> 48) & 0xff); 3985 buf[off++] = ((pr_reg->pr_res_key >> 48) & 0xff);
3988 buf[off++] = ((pr_reg->pr_res_key >> 40) & 0xff); 3986 buf[off++] = ((pr_reg->pr_res_key >> 40) & 0xff);
3989 buf[off++] = ((pr_reg->pr_res_key >> 32) & 0xff); 3987 buf[off++] = ((pr_reg->pr_res_key >> 32) & 0xff);
3990 buf[off++] = ((pr_reg->pr_res_key >> 24) & 0xff); 3988 buf[off++] = ((pr_reg->pr_res_key >> 24) & 0xff);
3991 buf[off++] = ((pr_reg->pr_res_key >> 16) & 0xff); 3989 buf[off++] = ((pr_reg->pr_res_key >> 16) & 0xff);
3992 buf[off++] = ((pr_reg->pr_res_key >> 8) & 0xff); 3990 buf[off++] = ((pr_reg->pr_res_key >> 8) & 0xff);
3993 buf[off++] = (pr_reg->pr_res_key & 0xff); 3991 buf[off++] = (pr_reg->pr_res_key & 0xff);
3994 3992
3995 add_len += 8; 3993 add_len += 8;
3996 } 3994 }
3997 spin_unlock(&su_dev->t10_pr.registration_lock); 3995 spin_unlock(&su_dev->t10_pr.registration_lock);
3998 3996
3999 buf[4] = ((add_len >> 24) & 0xff); 3997 buf[4] = ((add_len >> 24) & 0xff);
4000 buf[5] = ((add_len >> 16) & 0xff); 3998 buf[5] = ((add_len >> 16) & 0xff);
4001 buf[6] = ((add_len >> 8) & 0xff); 3999 buf[6] = ((add_len >> 8) & 0xff);
4002 buf[7] = (add_len & 0xff); 4000 buf[7] = (add_len & 0xff);
4003 4001
4004 transport_kunmap_data_sg(cmd); 4002 transport_kunmap_data_sg(cmd);
4005 4003
4006 return 0; 4004 return 0;
4007 } 4005 }
4008 4006
4009 /* 4007 /*
4010 * PERSISTENT_RESERVE_IN Service Action READ_RESERVATION 4008 * PERSISTENT_RESERVE_IN Service Action READ_RESERVATION
4011 * 4009 *
4012 * See spc4r17 section 5.7.6.3 and section 6.13.3.2 Table 161 and 162 4010 * See spc4r17 section 5.7.6.3 and section 6.13.3.2 Table 161 and 162
4013 */ 4011 */
4014 static int core_scsi3_pri_read_reservation(struct se_cmd *cmd) 4012 static int core_scsi3_pri_read_reservation(struct se_cmd *cmd)
4015 { 4013 {
4016 struct se_device *se_dev = cmd->se_dev; 4014 struct se_device *se_dev = cmd->se_dev;
4017 struct se_subsystem_dev *su_dev = se_dev->se_sub_dev; 4015 struct se_subsystem_dev *su_dev = se_dev->se_sub_dev;
4018 struct t10_pr_registration *pr_reg; 4016 struct t10_pr_registration *pr_reg;
4019 unsigned char *buf; 4017 unsigned char *buf;
4020 u64 pr_res_key; 4018 u64 pr_res_key;
4021 u32 add_len = 16; /* Hardcoded to 16 when a reservation is held. */ 4019 u32 add_len = 16; /* Hardcoded to 16 when a reservation is held. */
4022 4020
4023 if (cmd->data_length < 8) { 4021 if (cmd->data_length < 8) {
4024 pr_err("PRIN SA READ_RESERVATIONS SCSI Data Length: %u" 4022 pr_err("PRIN SA READ_RESERVATIONS SCSI Data Length: %u"
4025 " too small\n", cmd->data_length); 4023 " too small\n", cmd->data_length);
4026 cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD; 4024 cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD;
4027 return -EINVAL; 4025 return -EINVAL;
4028 } 4026 }
4029 4027
4030 buf = transport_kmap_data_sg(cmd); 4028 buf = transport_kmap_data_sg(cmd);
4031 buf[0] = ((su_dev->t10_pr.pr_generation >> 24) & 0xff); 4029 buf[0] = ((su_dev->t10_pr.pr_generation >> 24) & 0xff);
4032 buf[1] = ((su_dev->t10_pr.pr_generation >> 16) & 0xff); 4030 buf[1] = ((su_dev->t10_pr.pr_generation >> 16) & 0xff);
4033 buf[2] = ((su_dev->t10_pr.pr_generation >> 8) & 0xff); 4031 buf[2] = ((su_dev->t10_pr.pr_generation >> 8) & 0xff);
4034 buf[3] = (su_dev->t10_pr.pr_generation & 0xff); 4032 buf[3] = (su_dev->t10_pr.pr_generation & 0xff);
4035 4033
4036 spin_lock(&se_dev->dev_reservation_lock); 4034 spin_lock(&se_dev->dev_reservation_lock);
4037 pr_reg = se_dev->dev_pr_res_holder; 4035 pr_reg = se_dev->dev_pr_res_holder;
4038 if ((pr_reg)) { 4036 if ((pr_reg)) {
4039 /* 4037 /*
4040 * Set the hardcoded Additional Length 4038 * Set the hardcoded Additional Length
4041 */ 4039 */
4042 buf[4] = ((add_len >> 24) & 0xff); 4040 buf[4] = ((add_len >> 24) & 0xff);
4043 buf[5] = ((add_len >> 16) & 0xff); 4041 buf[5] = ((add_len >> 16) & 0xff);
4044 buf[6] = ((add_len >> 8) & 0xff); 4042 buf[6] = ((add_len >> 8) & 0xff);
4045 buf[7] = (add_len & 0xff); 4043 buf[7] = (add_len & 0xff);
4046 4044
4047 if (cmd->data_length < 22) 4045 if (cmd->data_length < 22)
4048 goto err; 4046 goto err;
4049 4047
4050 /* 4048 /*
4051 * Set the Reservation key. 4049 * Set the Reservation key.
4052 * 4050 *
4053 * From spc4r17, section 5.7.10: 4051 * From spc4r17, section 5.7.10:
4054 * A persistent reservation holder has its reservation key 4052 * A persistent reservation holder has its reservation key
4055 * returned in the parameter data from a PERSISTENT 4053 * returned in the parameter data from a PERSISTENT
4056 * RESERVE IN command with READ RESERVATION service action as 4054 * RESERVE IN command with READ RESERVATION service action as
4057 * follows: 4055 * follows:
4058 * a) For a persistent reservation of the type Write Exclusive 4056 * a) For a persistent reservation of the type Write Exclusive
4059 * - All Registrants or Exclusive Access ยญ All Regitrants, 4057 * - All Registrants or Exclusive Access ยญ All Regitrants,
4060 * the reservation key shall be set to zero; or 4058 * the reservation key shall be set to zero; or
4061 * b) For all other persistent reservation types, the 4059 * b) For all other persistent reservation types, the
4062 * reservation key shall be set to the registered 4060 * reservation key shall be set to the registered
4063 * reservation key for the I_T nexus that holds the 4061 * reservation key for the I_T nexus that holds the
4064 * persistent reservation. 4062 * persistent reservation.
4065 */ 4063 */
4066 if ((pr_reg->pr_res_type == PR_TYPE_WRITE_EXCLUSIVE_ALLREG) || 4064 if ((pr_reg->pr_res_type == PR_TYPE_WRITE_EXCLUSIVE_ALLREG) ||
4067 (pr_reg->pr_res_type == PR_TYPE_EXCLUSIVE_ACCESS_ALLREG)) 4065 (pr_reg->pr_res_type == PR_TYPE_EXCLUSIVE_ACCESS_ALLREG))
4068 pr_res_key = 0; 4066 pr_res_key = 0;
4069 else 4067 else
4070 pr_res_key = pr_reg->pr_res_key; 4068 pr_res_key = pr_reg->pr_res_key;
4071 4069
4072 buf[8] = ((pr_res_key >> 56) & 0xff); 4070 buf[8] = ((pr_res_key >> 56) & 0xff);
4073 buf[9] = ((pr_res_key >> 48) & 0xff); 4071 buf[9] = ((pr_res_key >> 48) & 0xff);
4074 buf[10] = ((pr_res_key >> 40) & 0xff); 4072 buf[10] = ((pr_res_key >> 40) & 0xff);
4075 buf[11] = ((pr_res_key >> 32) & 0xff); 4073 buf[11] = ((pr_res_key >> 32) & 0xff);
4076 buf[12] = ((pr_res_key >> 24) & 0xff); 4074 buf[12] = ((pr_res_key >> 24) & 0xff);
4077 buf[13] = ((pr_res_key >> 16) & 0xff); 4075 buf[13] = ((pr_res_key >> 16) & 0xff);
4078 buf[14] = ((pr_res_key >> 8) & 0xff); 4076 buf[14] = ((pr_res_key >> 8) & 0xff);
4079 buf[15] = (pr_res_key & 0xff); 4077 buf[15] = (pr_res_key & 0xff);
4080 /* 4078 /*
4081 * Set the SCOPE and TYPE 4079 * Set the SCOPE and TYPE
4082 */ 4080 */
4083 buf[21] = (pr_reg->pr_res_scope & 0xf0) | 4081 buf[21] = (pr_reg->pr_res_scope & 0xf0) |
4084 (pr_reg->pr_res_type & 0x0f); 4082 (pr_reg->pr_res_type & 0x0f);
4085 } 4083 }
4086 4084
4087 err: 4085 err:
4088 spin_unlock(&se_dev->dev_reservation_lock); 4086 spin_unlock(&se_dev->dev_reservation_lock);
4089 transport_kunmap_data_sg(cmd); 4087 transport_kunmap_data_sg(cmd);
4090 4088
4091 return 0; 4089 return 0;
4092 } 4090 }
4093 4091
4094 /* 4092 /*
4095 * PERSISTENT_RESERVE_IN Service Action REPORT_CAPABILITIES 4093 * PERSISTENT_RESERVE_IN Service Action REPORT_CAPABILITIES
4096 * 4094 *
4097 * See spc4r17 section 6.13.4 Table 165 4095 * See spc4r17 section 6.13.4 Table 165
4098 */ 4096 */
4099 static int core_scsi3_pri_report_capabilities(struct se_cmd *cmd) 4097 static int core_scsi3_pri_report_capabilities(struct se_cmd *cmd)
4100 { 4098 {
4101 struct se_device *dev = cmd->se_dev; 4099 struct se_device *dev = cmd->se_dev;
4102 struct t10_reservation *pr_tmpl = &dev->se_sub_dev->t10_pr; 4100 struct t10_reservation *pr_tmpl = &dev->se_sub_dev->t10_pr;
4103 unsigned char *buf; 4101 unsigned char *buf;
4104 u16 add_len = 8; /* Hardcoded to 8. */ 4102 u16 add_len = 8; /* Hardcoded to 8. */
4105 4103
4106 if (cmd->data_length < 6) { 4104 if (cmd->data_length < 6) {
4107 pr_err("PRIN SA REPORT_CAPABILITIES SCSI Data Length:" 4105 pr_err("PRIN SA REPORT_CAPABILITIES SCSI Data Length:"
4108 " %u too small\n", cmd->data_length); 4106 " %u too small\n", cmd->data_length);
4109 cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD; 4107 cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD;
4110 return -EINVAL; 4108 return -EINVAL;
4111 } 4109 }
4112 4110
4113 buf = transport_kmap_data_sg(cmd); 4111 buf = transport_kmap_data_sg(cmd);
4114 4112
4115 buf[0] = ((add_len << 8) & 0xff); 4113 buf[0] = ((add_len << 8) & 0xff);
4116 buf[1] = (add_len & 0xff); 4114 buf[1] = (add_len & 0xff);
4117 buf[2] |= 0x10; /* CRH: Compatible Reservation Hanlding bit. */ 4115 buf[2] |= 0x10; /* CRH: Compatible Reservation Hanlding bit. */
4118 buf[2] |= 0x08; /* SIP_C: Specify Initiator Ports Capable bit */ 4116 buf[2] |= 0x08; /* SIP_C: Specify Initiator Ports Capable bit */
4119 buf[2] |= 0x04; /* ATP_C: All Target Ports Capable bit */ 4117 buf[2] |= 0x04; /* ATP_C: All Target Ports Capable bit */
4120 buf[2] |= 0x01; /* PTPL_C: Persistence across Target Power Loss bit */ 4118 buf[2] |= 0x01; /* PTPL_C: Persistence across Target Power Loss bit */
4121 /* 4119 /*
4122 * We are filling in the PERSISTENT RESERVATION TYPE MASK below, so 4120 * We are filling in the PERSISTENT RESERVATION TYPE MASK below, so
4123 * set the TMV: Task Mask Valid bit. 4121 * set the TMV: Task Mask Valid bit.
4124 */ 4122 */
4125 buf[3] |= 0x80; 4123 buf[3] |= 0x80;
4126 /* 4124 /*
4127 * Change ALLOW COMMANDs to 0x20 or 0x40 later from Table 166 4125 * Change ALLOW COMMANDs to 0x20 or 0x40 later from Table 166
4128 */ 4126 */
4129 buf[3] |= 0x10; /* ALLOW COMMANDs field 001b */ 4127 buf[3] |= 0x10; /* ALLOW COMMANDs field 001b */
4130 /* 4128 /*
4131 * PTPL_A: Persistence across Target Power Loss Active bit 4129 * PTPL_A: Persistence across Target Power Loss Active bit
4132 */ 4130 */
4133 if (pr_tmpl->pr_aptpl_active) 4131 if (pr_tmpl->pr_aptpl_active)
4134 buf[3] |= 0x01; 4132 buf[3] |= 0x01;
4135 /* 4133 /*
4136 * Setup the PERSISTENT RESERVATION TYPE MASK from Table 167 4134 * Setup the PERSISTENT RESERVATION TYPE MASK from Table 167
4137 */ 4135 */
4138 buf[4] |= 0x80; /* PR_TYPE_EXCLUSIVE_ACCESS_ALLREG */ 4136 buf[4] |= 0x80; /* PR_TYPE_EXCLUSIVE_ACCESS_ALLREG */
4139 buf[4] |= 0x40; /* PR_TYPE_EXCLUSIVE_ACCESS_REGONLY */ 4137 buf[4] |= 0x40; /* PR_TYPE_EXCLUSIVE_ACCESS_REGONLY */
4140 buf[4] |= 0x20; /* PR_TYPE_WRITE_EXCLUSIVE_REGONLY */ 4138 buf[4] |= 0x20; /* PR_TYPE_WRITE_EXCLUSIVE_REGONLY */
4141 buf[4] |= 0x08; /* PR_TYPE_EXCLUSIVE_ACCESS */ 4139 buf[4] |= 0x08; /* PR_TYPE_EXCLUSIVE_ACCESS */
4142 buf[4] |= 0x02; /* PR_TYPE_WRITE_EXCLUSIVE */ 4140 buf[4] |= 0x02; /* PR_TYPE_WRITE_EXCLUSIVE */
4143 buf[5] |= 0x01; /* PR_TYPE_EXCLUSIVE_ACCESS_ALLREG */ 4141 buf[5] |= 0x01; /* PR_TYPE_EXCLUSIVE_ACCESS_ALLREG */
4144 4142
4145 transport_kunmap_data_sg(cmd); 4143 transport_kunmap_data_sg(cmd);
4146 4144
4147 return 0; 4145 return 0;
4148 } 4146 }
4149 4147
4150 /* 4148 /*
4151 * PERSISTENT_RESERVE_IN Service Action READ_FULL_STATUS 4149 * PERSISTENT_RESERVE_IN Service Action READ_FULL_STATUS
4152 * 4150 *
4153 * See spc4r17 section 6.13.5 Table 168 and 169 4151 * See spc4r17 section 6.13.5 Table 168 and 169
4154 */ 4152 */
4155 static int core_scsi3_pri_read_full_status(struct se_cmd *cmd) 4153 static int core_scsi3_pri_read_full_status(struct se_cmd *cmd)
4156 { 4154 {
4157 struct se_device *se_dev = cmd->se_dev; 4155 struct se_device *se_dev = cmd->se_dev;
4158 struct se_node_acl *se_nacl; 4156 struct se_node_acl *se_nacl;
4159 struct se_subsystem_dev *su_dev = se_dev->se_sub_dev; 4157 struct se_subsystem_dev *su_dev = se_dev->se_sub_dev;
4160 struct se_portal_group *se_tpg; 4158 struct se_portal_group *se_tpg;
4161 struct t10_pr_registration *pr_reg, *pr_reg_tmp; 4159 struct t10_pr_registration *pr_reg, *pr_reg_tmp;
4162 struct t10_reservation *pr_tmpl = &se_dev->se_sub_dev->t10_pr; 4160 struct t10_reservation *pr_tmpl = &se_dev->se_sub_dev->t10_pr;
4163 unsigned char *buf; 4161 unsigned char *buf;
4164 u32 add_desc_len = 0, add_len = 0, desc_len, exp_desc_len; 4162 u32 add_desc_len = 0, add_len = 0, desc_len, exp_desc_len;
4165 u32 off = 8; /* off into first Full Status descriptor */ 4163 u32 off = 8; /* off into first Full Status descriptor */
4166 int format_code = 0; 4164 int format_code = 0;
4167 4165
4168 if (cmd->data_length < 8) { 4166 if (cmd->data_length < 8) {
4169 pr_err("PRIN SA READ_FULL_STATUS SCSI Data Length: %u" 4167 pr_err("PRIN SA READ_FULL_STATUS SCSI Data Length: %u"
4170 " too small\n", cmd->data_length); 4168 " too small\n", cmd->data_length);
4171 cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD; 4169 cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD;
4172 return -EINVAL; 4170 return -EINVAL;
4173 } 4171 }
4174 4172
4175 buf = transport_kmap_data_sg(cmd); 4173 buf = transport_kmap_data_sg(cmd);
4176 4174
4177 buf[0] = ((su_dev->t10_pr.pr_generation >> 24) & 0xff); 4175 buf[0] = ((su_dev->t10_pr.pr_generation >> 24) & 0xff);
4178 buf[1] = ((su_dev->t10_pr.pr_generation >> 16) & 0xff); 4176 buf[1] = ((su_dev->t10_pr.pr_generation >> 16) & 0xff);
4179 buf[2] = ((su_dev->t10_pr.pr_generation >> 8) & 0xff); 4177 buf[2] = ((su_dev->t10_pr.pr_generation >> 8) & 0xff);
4180 buf[3] = (su_dev->t10_pr.pr_generation & 0xff); 4178 buf[3] = (su_dev->t10_pr.pr_generation & 0xff);
4181 4179
4182 spin_lock(&pr_tmpl->registration_lock); 4180 spin_lock(&pr_tmpl->registration_lock);
4183 list_for_each_entry_safe(pr_reg, pr_reg_tmp, 4181 list_for_each_entry_safe(pr_reg, pr_reg_tmp,
4184 &pr_tmpl->registration_list, pr_reg_list) { 4182 &pr_tmpl->registration_list, pr_reg_list) {
4185 4183
4186 se_nacl = pr_reg->pr_reg_nacl; 4184 se_nacl = pr_reg->pr_reg_nacl;
4187 se_tpg = pr_reg->pr_reg_nacl->se_tpg; 4185 se_tpg = pr_reg->pr_reg_nacl->se_tpg;
4188 add_desc_len = 0; 4186 add_desc_len = 0;
4189 4187
4190 atomic_inc(&pr_reg->pr_res_holders); 4188 atomic_inc(&pr_reg->pr_res_holders);
4191 smp_mb__after_atomic_inc(); 4189 smp_mb__after_atomic_inc();
4192 spin_unlock(&pr_tmpl->registration_lock); 4190 spin_unlock(&pr_tmpl->registration_lock);
4193 /* 4191 /*
4194 * Determine expected length of $FABRIC_MOD specific 4192 * Determine expected length of $FABRIC_MOD specific
4195 * TransportID full status descriptor.. 4193 * TransportID full status descriptor..
4196 */ 4194 */
4197 exp_desc_len = se_tpg->se_tpg_tfo->tpg_get_pr_transport_id_len( 4195 exp_desc_len = se_tpg->se_tpg_tfo->tpg_get_pr_transport_id_len(
4198 se_tpg, se_nacl, pr_reg, &format_code); 4196 se_tpg, se_nacl, pr_reg, &format_code);
4199 4197
4200 if ((exp_desc_len + add_len) > cmd->data_length) { 4198 if ((exp_desc_len + add_len) > cmd->data_length) {
4201 pr_warn("SPC-3 PRIN READ_FULL_STATUS ran" 4199 pr_warn("SPC-3 PRIN READ_FULL_STATUS ran"
4202 " out of buffer: %d\n", cmd->data_length); 4200 " out of buffer: %d\n", cmd->data_length);
4203 spin_lock(&pr_tmpl->registration_lock); 4201 spin_lock(&pr_tmpl->registration_lock);
4204 atomic_dec(&pr_reg->pr_res_holders); 4202 atomic_dec(&pr_reg->pr_res_holders);
4205 smp_mb__after_atomic_dec(); 4203 smp_mb__after_atomic_dec();
4206 break; 4204 break;
4207 } 4205 }
4208 /* 4206 /*
4209 * Set RESERVATION KEY 4207 * Set RESERVATION KEY
4210 */ 4208 */
4211 buf[off++] = ((pr_reg->pr_res_key >> 56) & 0xff); 4209 buf[off++] = ((pr_reg->pr_res_key >> 56) & 0xff);
4212 buf[off++] = ((pr_reg->pr_res_key >> 48) & 0xff); 4210 buf[off++] = ((pr_reg->pr_res_key >> 48) & 0xff);
4213 buf[off++] = ((pr_reg->pr_res_key >> 40) & 0xff); 4211 buf[off++] = ((pr_reg->pr_res_key >> 40) & 0xff);
4214 buf[off++] = ((pr_reg->pr_res_key >> 32) & 0xff); 4212 buf[off++] = ((pr_reg->pr_res_key >> 32) & 0xff);
4215 buf[off++] = ((pr_reg->pr_res_key >> 24) & 0xff); 4213 buf[off++] = ((pr_reg->pr_res_key >> 24) & 0xff);
4216 buf[off++] = ((pr_reg->pr_res_key >> 16) & 0xff); 4214 buf[off++] = ((pr_reg->pr_res_key >> 16) & 0xff);
4217 buf[off++] = ((pr_reg->pr_res_key >> 8) & 0xff); 4215 buf[off++] = ((pr_reg->pr_res_key >> 8) & 0xff);
4218 buf[off++] = (pr_reg->pr_res_key & 0xff); 4216 buf[off++] = (pr_reg->pr_res_key & 0xff);
4219 off += 4; /* Skip Over Reserved area */ 4217 off += 4; /* Skip Over Reserved area */
4220 4218
4221 /* 4219 /*
4222 * Set ALL_TG_PT bit if PROUT SA REGISTER had this set. 4220 * Set ALL_TG_PT bit if PROUT SA REGISTER had this set.
4223 */ 4221 */
4224 if (pr_reg->pr_reg_all_tg_pt) 4222 if (pr_reg->pr_reg_all_tg_pt)
4225 buf[off] = 0x02; 4223 buf[off] = 0x02;
4226 /* 4224 /*
4227 * The struct se_lun pointer will be present for the 4225 * The struct se_lun pointer will be present for the
4228 * reservation holder for PR_HOLDER bit. 4226 * reservation holder for PR_HOLDER bit.
4229 * 4227 *
4230 * Also, if this registration is the reservation 4228 * Also, if this registration is the reservation
4231 * holder, fill in SCOPE and TYPE in the next byte. 4229 * holder, fill in SCOPE and TYPE in the next byte.
4232 */ 4230 */
4233 if (pr_reg->pr_res_holder) { 4231 if (pr_reg->pr_res_holder) {
4234 buf[off++] |= 0x01; 4232 buf[off++] |= 0x01;
4235 buf[off++] = (pr_reg->pr_res_scope & 0xf0) | 4233 buf[off++] = (pr_reg->pr_res_scope & 0xf0) |
4236 (pr_reg->pr_res_type & 0x0f); 4234 (pr_reg->pr_res_type & 0x0f);
4237 } else 4235 } else
4238 off += 2; 4236 off += 2;
4239 4237
4240 off += 4; /* Skip over reserved area */ 4238 off += 4; /* Skip over reserved area */
4241 /* 4239 /*
4242 * From spc4r17 6.3.15: 4240 * From spc4r17 6.3.15:
4243 * 4241 *
4244 * If the ALL_TG_PT bit set to zero, the RELATIVE TARGET PORT 4242 * If the ALL_TG_PT bit set to zero, the RELATIVE TARGET PORT
4245 * IDENTIFIER field contains the relative port identifier (see 4243 * IDENTIFIER field contains the relative port identifier (see
4246 * 3.1.120) of the target port that is part of the I_T nexus 4244 * 3.1.120) of the target port that is part of the I_T nexus
4247 * described by this full status descriptor. If the ALL_TG_PT 4245 * described by this full status descriptor. If the ALL_TG_PT
4248 * bit is set to one, the contents of the RELATIVE TARGET PORT 4246 * bit is set to one, the contents of the RELATIVE TARGET PORT
4249 * IDENTIFIER field are not defined by this standard. 4247 * IDENTIFIER field are not defined by this standard.
4250 */ 4248 */
4251 if (!pr_reg->pr_reg_all_tg_pt) { 4249 if (!pr_reg->pr_reg_all_tg_pt) {
4252 struct se_port *port = pr_reg->pr_reg_tg_pt_lun->lun_sep; 4250 struct se_port *port = pr_reg->pr_reg_tg_pt_lun->lun_sep;
4253 4251
4254 buf[off++] = ((port->sep_rtpi >> 8) & 0xff); 4252 buf[off++] = ((port->sep_rtpi >> 8) & 0xff);
4255 buf[off++] = (port->sep_rtpi & 0xff); 4253 buf[off++] = (port->sep_rtpi & 0xff);
4256 } else 4254 } else
4257 off += 2; /* Skip over RELATIVE TARGET PORT IDENTIFER */ 4255 off += 2; /* Skip over RELATIVE TARGET PORT IDENTIFER */
4258 4256
4259 /* 4257 /*
4260 * Now, have the $FABRIC_MOD fill in the protocol identifier 4258 * Now, have the $FABRIC_MOD fill in the protocol identifier
4261 */ 4259 */
4262 desc_len = se_tpg->se_tpg_tfo->tpg_get_pr_transport_id(se_tpg, 4260 desc_len = se_tpg->se_tpg_tfo->tpg_get_pr_transport_id(se_tpg,
4263 se_nacl, pr_reg, &format_code, &buf[off+4]); 4261 se_nacl, pr_reg, &format_code, &buf[off+4]);
4264 4262
4265 spin_lock(&pr_tmpl->registration_lock); 4263 spin_lock(&pr_tmpl->registration_lock);
4266 atomic_dec(&pr_reg->pr_res_holders); 4264 atomic_dec(&pr_reg->pr_res_holders);
4267 smp_mb__after_atomic_dec(); 4265 smp_mb__after_atomic_dec();
4268 /* 4266 /*
4269 * Set the ADDITIONAL DESCRIPTOR LENGTH 4267 * Set the ADDITIONAL DESCRIPTOR LENGTH
4270 */ 4268 */
4271 buf[off++] = ((desc_len >> 24) & 0xff); 4269 buf[off++] = ((desc_len >> 24) & 0xff);
4272 buf[off++] = ((desc_len >> 16) & 0xff); 4270 buf[off++] = ((desc_len >> 16) & 0xff);
4273 buf[off++] = ((desc_len >> 8) & 0xff); 4271 buf[off++] = ((desc_len >> 8) & 0xff);
4274 buf[off++] = (desc_len & 0xff); 4272 buf[off++] = (desc_len & 0xff);
4275 /* 4273 /*
4276 * Size of full desctipor header minus TransportID 4274 * Size of full desctipor header minus TransportID
4277 * containing $FABRIC_MOD specific) initiator device/port 4275 * containing $FABRIC_MOD specific) initiator device/port
4278 * WWN information. 4276 * WWN information.
4279 * 4277 *
4280 * See spc4r17 Section 6.13.5 Table 169 4278 * See spc4r17 Section 6.13.5 Table 169
4281 */ 4279 */
4282 add_desc_len = (24 + desc_len); 4280 add_desc_len = (24 + desc_len);
4283 4281
4284 off += desc_len; 4282 off += desc_len;
4285 add_len += add_desc_len; 4283 add_len += add_desc_len;
4286 } 4284 }
4287 spin_unlock(&pr_tmpl->registration_lock); 4285 spin_unlock(&pr_tmpl->registration_lock);
4288 /* 4286 /*
4289 * Set ADDITIONAL_LENGTH 4287 * Set ADDITIONAL_LENGTH
4290 */ 4288 */
4291 buf[4] = ((add_len >> 24) & 0xff); 4289 buf[4] = ((add_len >> 24) & 0xff);
4292 buf[5] = ((add_len >> 16) & 0xff); 4290 buf[5] = ((add_len >> 16) & 0xff);
4293 buf[6] = ((add_len >> 8) & 0xff); 4291 buf[6] = ((add_len >> 8) & 0xff);
4294 buf[7] = (add_len & 0xff); 4292 buf[7] = (add_len & 0xff);
4295 4293
4296 transport_kunmap_data_sg(cmd); 4294 transport_kunmap_data_sg(cmd);
4297 4295
4298 return 0; 4296 return 0;
4299 } 4297 }
4300 4298
4301 int target_scsi3_emulate_pr_in(struct se_task *task) 4299 int target_scsi3_emulate_pr_in(struct se_task *task)
4302 { 4300 {
4303 struct se_cmd *cmd = task->task_se_cmd; 4301 struct se_cmd *cmd = task->task_se_cmd;
4304 int ret; 4302 int ret;
4305 4303
4306 /* 4304 /*
4307 * Following spc2r20 5.5.1 Reservations overview: 4305 * Following spc2r20 5.5.1 Reservations overview:
4308 * 4306 *
4309 * If a logical unit has been reserved by any RESERVE command and is 4307 * If a logical unit has been reserved by any RESERVE command and is
4310 * still reserved by any initiator, all PERSISTENT RESERVE IN and all 4308 * still reserved by any initiator, all PERSISTENT RESERVE IN and all
4311 * PERSISTENT RESERVE OUT commands shall conflict regardless of 4309 * PERSISTENT RESERVE OUT commands shall conflict regardless of
4312 * initiator or service action and shall terminate with a RESERVATION 4310 * initiator or service action and shall terminate with a RESERVATION
4313 * CONFLICT status. 4311 * CONFLICT status.
4314 */ 4312 */
4315 if (cmd->se_dev->dev_flags & DF_SPC2_RESERVATIONS) { 4313 if (cmd->se_dev->dev_flags & DF_SPC2_RESERVATIONS) {
4316 pr_err("Received PERSISTENT_RESERVE CDB while legacy" 4314 pr_err("Received PERSISTENT_RESERVE CDB while legacy"
4317 " SPC-2 reservation is held, returning" 4315 " SPC-2 reservation is held, returning"
4318 " RESERVATION_CONFLICT\n"); 4316 " RESERVATION_CONFLICT\n");
4319 cmd->scsi_sense_reason = TCM_RESERVATION_CONFLICT; 4317 cmd->scsi_sense_reason = TCM_RESERVATION_CONFLICT;
4320 return -EINVAL; 4318 return -EINVAL;
4321 } 4319 }
4322 4320
4323 switch (cmd->t_task_cdb[1] & 0x1f) { 4321 switch (cmd->t_task_cdb[1] & 0x1f) {
4324 case PRI_READ_KEYS: 4322 case PRI_READ_KEYS:
4325 ret = core_scsi3_pri_read_keys(cmd); 4323 ret = core_scsi3_pri_read_keys(cmd);
4326 break; 4324 break;
4327 case PRI_READ_RESERVATION: 4325 case PRI_READ_RESERVATION:
4328 ret = core_scsi3_pri_read_reservation(cmd); 4326 ret = core_scsi3_pri_read_reservation(cmd);
4329 break; 4327 break;
4330 case PRI_REPORT_CAPABILITIES: 4328 case PRI_REPORT_CAPABILITIES:
4331 ret = core_scsi3_pri_report_capabilities(cmd); 4329 ret = core_scsi3_pri_report_capabilities(cmd);
4332 break; 4330 break;
4333 case PRI_READ_FULL_STATUS: 4331 case PRI_READ_FULL_STATUS:
4334 ret = core_scsi3_pri_read_full_status(cmd); 4332 ret = core_scsi3_pri_read_full_status(cmd);
4335 break; 4333 break;
4336 default: 4334 default:
4337 pr_err("Unknown PERSISTENT_RESERVE_IN service" 4335 pr_err("Unknown PERSISTENT_RESERVE_IN service"
4338 " action: 0x%02x\n", cmd->t_task_cdb[1] & 0x1f); 4336 " action: 0x%02x\n", cmd->t_task_cdb[1] & 0x1f);
4339 cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD; 4337 cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD;
4340 ret = -EINVAL; 4338 ret = -EINVAL;
4341 break; 4339 break;
4342 } 4340 }
4343 4341
4344 if (!ret) { 4342 if (!ret) {
4345 task->task_scsi_status = GOOD; 4343 task->task_scsi_status = GOOD;
4346 transport_complete_task(task, 1); 4344 transport_complete_task(task, 1);
4347 } 4345 }
4348 return ret; 4346 return ret;
4349 } 4347 }
4350 4348
4351 static int core_pt_reservation_check(struct se_cmd *cmd, u32 *pr_res_type) 4349 static int core_pt_reservation_check(struct se_cmd *cmd, u32 *pr_res_type)
4352 { 4350 {
4353 return 0; 4351 return 0;
4354 } 4352 }
4355 4353
4356 static int core_pt_seq_non_holder( 4354 static int core_pt_seq_non_holder(
4357 struct se_cmd *cmd, 4355 struct se_cmd *cmd,
4358 unsigned char *cdb, 4356 unsigned char *cdb,
4359 u32 pr_reg_type) 4357 u32 pr_reg_type)
4360 { 4358 {
4361 return 0; 4359 return 0;
4362 } 4360 }
4363 4361
4364 int core_setup_reservations(struct se_device *dev, int force_pt) 4362 int core_setup_reservations(struct se_device *dev, int force_pt)
4365 { 4363 {
4366 struct se_subsystem_dev *su_dev = dev->se_sub_dev; 4364 struct se_subsystem_dev *su_dev = dev->se_sub_dev;
4367 struct t10_reservation *rest = &su_dev->t10_pr; 4365 struct t10_reservation *rest = &su_dev->t10_pr;
4368 /* 4366 /*
4369 * If this device is from Target_Core_Mod/pSCSI, use the reservations 4367 * If this device is from Target_Core_Mod/pSCSI, use the reservations
4370 * of the Underlying SCSI hardware. In Linux/SCSI terms, this can 4368 * of the Underlying SCSI hardware. In Linux/SCSI terms, this can
4371 * cause a problem because libata and some SATA RAID HBAs appear 4369 * cause a problem because libata and some SATA RAID HBAs appear
4372 * under Linux/SCSI, but to emulate reservations themselves. 4370 * under Linux/SCSI, but to emulate reservations themselves.
4373 */ 4371 */
4374 if (((dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) && 4372 if (((dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) &&
4375 !(dev->se_sub_dev->se_dev_attrib.emulate_reservations)) || force_pt) { 4373 !(dev->se_sub_dev->se_dev_attrib.emulate_reservations)) || force_pt) {
4376 rest->res_type = SPC_PASSTHROUGH; 4374 rest->res_type = SPC_PASSTHROUGH;
4377 rest->pr_ops.t10_reservation_check = &core_pt_reservation_check; 4375 rest->pr_ops.t10_reservation_check = &core_pt_reservation_check;
4378 rest->pr_ops.t10_seq_non_holder = &core_pt_seq_non_holder; 4376 rest->pr_ops.t10_seq_non_holder = &core_pt_seq_non_holder;
4379 pr_debug("%s: Using SPC_PASSTHROUGH, no reservation" 4377 pr_debug("%s: Using SPC_PASSTHROUGH, no reservation"
4380 " emulation\n", dev->transport->name); 4378 " emulation\n", dev->transport->name);
4381 return 0; 4379 return 0;
4382 } 4380 }
4383 /* 4381 /*
4384 * If SPC-3 or above is reported by real or emulated struct se_device, 4382 * If SPC-3 or above is reported by real or emulated struct se_device,
4385 * use emulated Persistent Reservations. 4383 * use emulated Persistent Reservations.
4386 */ 4384 */
4387 if (dev->transport->get_device_rev(dev) >= SCSI_3) { 4385 if (dev->transport->get_device_rev(dev) >= SCSI_3) {
4388 rest->res_type = SPC3_PERSISTENT_RESERVATIONS; 4386 rest->res_type = SPC3_PERSISTENT_RESERVATIONS;
4389 rest->pr_ops.t10_reservation_check = &core_scsi3_pr_reservation_check; 4387 rest->pr_ops.t10_reservation_check = &core_scsi3_pr_reservation_check;
4390 rest->pr_ops.t10_seq_non_holder = &core_scsi3_pr_seq_non_holder; 4388 rest->pr_ops.t10_seq_non_holder = &core_scsi3_pr_seq_non_holder;
4391 pr_debug("%s: Using SPC3_PERSISTENT_RESERVATIONS" 4389 pr_debug("%s: Using SPC3_PERSISTENT_RESERVATIONS"
4392 " emulation\n", dev->transport->name); 4390 " emulation\n", dev->transport->name);
4393 } else { 4391 } else {
4394 rest->res_type = SPC2_RESERVATIONS; 4392 rest->res_type = SPC2_RESERVATIONS;
4395 rest->pr_ops.t10_reservation_check = &core_scsi2_reservation_check; 4393 rest->pr_ops.t10_reservation_check = &core_scsi2_reservation_check;
4396 rest->pr_ops.t10_seq_non_holder = 4394 rest->pr_ops.t10_seq_non_holder =
4397 &core_scsi2_reservation_seq_non_holder; 4395 &core_scsi2_reservation_seq_non_holder;
4398 pr_debug("%s: Using SPC2_RESERVATIONS emulation\n", 4396 pr_debug("%s: Using SPC2_RESERVATIONS emulation\n",
4399 dev->transport->name); 4397 dev->transport->name);
4400 } 4398 }
4401 4399
4402 return 0; 4400 return 0;
4403 } 4401 }
4404 4402