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Commit d81f78ec37ecad3a4cc0a71d0ea1f74994ec5cda

Authored by Sven Eckelmann
Committed by Antonio Quartulli
1 parent 004e86fc58
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

batman-adv: Start new development cycle 

Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>

Showing 1 changed file with 1 additions and 1 deletions Inline Diff

net/batman-adv/main.h
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1 /* Copyright (C) 2007-2012 B.A.T.M.A.N. contributors: 1 /* Copyright (C) 2007-2012 B.A.T.M.A.N. contributors:
2 * 2 *
3 * Marek Lindner, Simon Wunderlich 3 * Marek Lindner, Simon Wunderlich
4 * 4 *
5 * This program is free software; you can redistribute it and/or 5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of version 2 of the GNU General Public 6 * modify it under the terms of version 2 of the GNU General Public
7 * License as published by the Free Software Foundation. 7 * License as published by the Free Software Foundation.
8 * 8 *
9 * This program is distributed in the hope that it will be useful, but 9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of 10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details. 12 * General Public License for more details.
13 * 13 *
14 * You should have received a copy of the GNU General Public License 14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software 15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
17 * 02110-1301, USA 17 * 02110-1301, USA
18 */ 18 */
19 19
20 #ifndef _NET_BATMAN_ADV_MAIN_H_ 20 #ifndef _NET_BATMAN_ADV_MAIN_H_
21 #define _NET_BATMAN_ADV_MAIN_H_ 21 #define _NET_BATMAN_ADV_MAIN_H_
22 22
23 #define BATADV_DRIVER_AUTHOR "Marek Lindner <lindner_marek@yahoo.de>, " \ 23 #define BATADV_DRIVER_AUTHOR "Marek Lindner <lindner_marek@yahoo.de>, " \
24 "Simon Wunderlich <siwu@hrz.tu-chemnitz.de>" 24 "Simon Wunderlich <siwu@hrz.tu-chemnitz.de>"
25 #define BATADV_DRIVER_DESC "B.A.T.M.A.N. advanced" 25 #define BATADV_DRIVER_DESC "B.A.T.M.A.N. advanced"
26 #define BATADV_DRIVER_DEVICE "batman-adv" 26 #define BATADV_DRIVER_DEVICE "batman-adv"
27 27
28 #ifndef BATADV_SOURCE_VERSION 28 #ifndef BATADV_SOURCE_VERSION
29 #define BATADV_SOURCE_VERSION "2012.4.0" 29 #define BATADV_SOURCE_VERSION "2012.5.0"
30 #endif 30 #endif
31 31
32 /* B.A.T.M.A.N. parameters */ 32 /* B.A.T.M.A.N. parameters */
33 33
34 #define BATADV_TQ_MAX_VALUE 255 34 #define BATADV_TQ_MAX_VALUE 255
35 #define BATADV_JITTER 20 35 #define BATADV_JITTER 20
36 36
37 /* Time To Live of broadcast messages */ 37 /* Time To Live of broadcast messages */
38 #define BATADV_TTL 50 38 #define BATADV_TTL 50
39 39
40 /* purge originators after time in seconds if no valid packet comes in 40 /* purge originators after time in seconds if no valid packet comes in
41 * -> TODO: check influence on BATADV_TQ_LOCAL_WINDOW_SIZE 41 * -> TODO: check influence on BATADV_TQ_LOCAL_WINDOW_SIZE
42 */ 42 */
43 #define BATADV_PURGE_TIMEOUT 200000 /* 200 seconds */ 43 #define BATADV_PURGE_TIMEOUT 200000 /* 200 seconds */
44 #define BATADV_TT_LOCAL_TIMEOUT 3600000 /* in milliseconds */ 44 #define BATADV_TT_LOCAL_TIMEOUT 3600000 /* in milliseconds */
45 #define BATADV_TT_CLIENT_ROAM_TIMEOUT 600000 /* in milliseconds */ 45 #define BATADV_TT_CLIENT_ROAM_TIMEOUT 600000 /* in milliseconds */
46 #define BATADV_TT_CLIENT_TEMP_TIMEOUT 600000 /* in milliseconds */ 46 #define BATADV_TT_CLIENT_TEMP_TIMEOUT 600000 /* in milliseconds */
47 #define BATADV_DAT_ENTRY_TIMEOUT (5*60000) /* 5 mins in milliseconds */ 47 #define BATADV_DAT_ENTRY_TIMEOUT (5*60000) /* 5 mins in milliseconds */
48 /* sliding packet range of received originator messages in sequence numbers 48 /* sliding packet range of received originator messages in sequence numbers
49 * (should be a multiple of our word size) 49 * (should be a multiple of our word size)
50 */ 50 */
51 #define BATADV_TQ_LOCAL_WINDOW_SIZE 64 51 #define BATADV_TQ_LOCAL_WINDOW_SIZE 64
52 /* milliseconds we have to keep pending tt_req */ 52 /* milliseconds we have to keep pending tt_req */
53 #define BATADV_TT_REQUEST_TIMEOUT 3000 53 #define BATADV_TT_REQUEST_TIMEOUT 3000
54 54
55 #define BATADV_TQ_GLOBAL_WINDOW_SIZE 5 55 #define BATADV_TQ_GLOBAL_WINDOW_SIZE 5
56 #define BATADV_TQ_LOCAL_BIDRECT_SEND_MINIMUM 1 56 #define BATADV_TQ_LOCAL_BIDRECT_SEND_MINIMUM 1
57 #define BATADV_TQ_LOCAL_BIDRECT_RECV_MINIMUM 1 57 #define BATADV_TQ_LOCAL_BIDRECT_RECV_MINIMUM 1
58 #define BATADV_TQ_TOTAL_BIDRECT_LIMIT 1 58 #define BATADV_TQ_TOTAL_BIDRECT_LIMIT 1
59 59
60 /* number of OGMs sent with the last tt diff */ 60 /* number of OGMs sent with the last tt diff */
61 #define BATADV_TT_OGM_APPEND_MAX 3 61 #define BATADV_TT_OGM_APPEND_MAX 3
62 62
63 /* Time in which a client can roam at most ROAMING_MAX_COUNT times in 63 /* Time in which a client can roam at most ROAMING_MAX_COUNT times in
64 * milliseconds 64 * milliseconds
65 */ 65 */
66 #define BATADV_ROAMING_MAX_TIME 20000 66 #define BATADV_ROAMING_MAX_TIME 20000
67 #define BATADV_ROAMING_MAX_COUNT 5 67 #define BATADV_ROAMING_MAX_COUNT 5
68 68
69 #define BATADV_NO_FLAGS 0 69 #define BATADV_NO_FLAGS 0
70 70
71 #define BATADV_NULL_IFINDEX 0 /* dummy ifindex used to avoid iface checks */ 71 #define BATADV_NULL_IFINDEX 0 /* dummy ifindex used to avoid iface checks */
72 72
73 #define BATADV_NUM_WORDS BITS_TO_LONGS(BATADV_TQ_LOCAL_WINDOW_SIZE) 73 #define BATADV_NUM_WORDS BITS_TO_LONGS(BATADV_TQ_LOCAL_WINDOW_SIZE)
74 74
75 #define BATADV_LOG_BUF_LEN 8192 /* has to be a power of 2 */ 75 #define BATADV_LOG_BUF_LEN 8192 /* has to be a power of 2 */
76 76
77 /* msecs after which an ARP_REQUEST is sent in broadcast as fallback */ 77 /* msecs after which an ARP_REQUEST is sent in broadcast as fallback */
78 #define ARP_REQ_DELAY 250 78 #define ARP_REQ_DELAY 250
79 /* numbers of originator to contact for any PUT/GET DHT operation */ 79 /* numbers of originator to contact for any PUT/GET DHT operation */
80 #define BATADV_DAT_CANDIDATES_NUM 3 80 #define BATADV_DAT_CANDIDATES_NUM 3
81 81
82 #define BATADV_VIS_INTERVAL 5000 /* 5 seconds */ 82 #define BATADV_VIS_INTERVAL 5000 /* 5 seconds */
83 83
84 /* how much worse secondary interfaces may be to be considered as bonding 84 /* how much worse secondary interfaces may be to be considered as bonding
85 * candidates 85 * candidates
86 */ 86 */
87 #define BATADV_BONDING_TQ_THRESHOLD 50 87 #define BATADV_BONDING_TQ_THRESHOLD 50
88 88
89 /* should not be bigger than 512 bytes or change the size of 89 /* should not be bigger than 512 bytes or change the size of
90 * forw_packet->direct_link_flags 90 * forw_packet->direct_link_flags
91 */ 91 */
92 #define BATADV_MAX_AGGREGATION_BYTES 512 92 #define BATADV_MAX_AGGREGATION_BYTES 512
93 #define BATADV_MAX_AGGREGATION_MS 100 93 #define BATADV_MAX_AGGREGATION_MS 100
94 94
95 #define BATADV_BLA_PERIOD_LENGTH 10000 /* 10 seconds */ 95 #define BATADV_BLA_PERIOD_LENGTH 10000 /* 10 seconds */
96 #define BATADV_BLA_BACKBONE_TIMEOUT (BATADV_BLA_PERIOD_LENGTH * 3) 96 #define BATADV_BLA_BACKBONE_TIMEOUT (BATADV_BLA_PERIOD_LENGTH * 3)
97 #define BATADV_BLA_CLAIM_TIMEOUT (BATADV_BLA_PERIOD_LENGTH * 10) 97 #define BATADV_BLA_CLAIM_TIMEOUT (BATADV_BLA_PERIOD_LENGTH * 10)
98 #define BATADV_BLA_WAIT_PERIODS 3 98 #define BATADV_BLA_WAIT_PERIODS 3
99 99
100 #define BATADV_DUPLIST_SIZE 16 100 #define BATADV_DUPLIST_SIZE 16
101 #define BATADV_DUPLIST_TIMEOUT 500 /* 500 ms */ 101 #define BATADV_DUPLIST_TIMEOUT 500 /* 500 ms */
102 /* don't reset again within 30 seconds */ 102 /* don't reset again within 30 seconds */
103 #define BATADV_RESET_PROTECTION_MS 30000 103 #define BATADV_RESET_PROTECTION_MS 30000
104 #define BATADV_EXPECTED_SEQNO_RANGE 65536 104 #define BATADV_EXPECTED_SEQNO_RANGE 65536
105 105
106 enum batadv_mesh_state { 106 enum batadv_mesh_state {
107 BATADV_MESH_INACTIVE, 107 BATADV_MESH_INACTIVE,
108 BATADV_MESH_ACTIVE, 108 BATADV_MESH_ACTIVE,
109 BATADV_MESH_DEACTIVATING, 109 BATADV_MESH_DEACTIVATING,
110 }; 110 };
111 111
112 #define BATADV_BCAST_QUEUE_LEN 256 112 #define BATADV_BCAST_QUEUE_LEN 256
113 #define BATADV_BATMAN_QUEUE_LEN 256 113 #define BATADV_BATMAN_QUEUE_LEN 256
114 114
115 enum batadv_uev_action { 115 enum batadv_uev_action {
116 BATADV_UEV_ADD = 0, 116 BATADV_UEV_ADD = 0,
117 BATADV_UEV_DEL, 117 BATADV_UEV_DEL,
118 BATADV_UEV_CHANGE, 118 BATADV_UEV_CHANGE,
119 }; 119 };
120 120
121 enum batadv_uev_type { 121 enum batadv_uev_type {
122 BATADV_UEV_GW = 0, 122 BATADV_UEV_GW = 0,
123 }; 123 };
124 124
125 #define BATADV_GW_THRESHOLD 50 125 #define BATADV_GW_THRESHOLD 50
126 126
127 #define BATADV_DAT_CANDIDATE_NOT_FOUND 0 127 #define BATADV_DAT_CANDIDATE_NOT_FOUND 0
128 #define BATADV_DAT_CANDIDATE_ORIG 1 128 #define BATADV_DAT_CANDIDATE_ORIG 1
129 129
130 /* Debug Messages */ 130 /* Debug Messages */
131 #ifdef pr_fmt 131 #ifdef pr_fmt
132 #undef pr_fmt 132 #undef pr_fmt
133 #endif 133 #endif
134 /* Append 'batman-adv: ' before kernel messages */ 134 /* Append 'batman-adv: ' before kernel messages */
135 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 135 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
136 136
137 /* Kernel headers */ 137 /* Kernel headers */
138 138
139 #include <linux/mutex.h> /* mutex */ 139 #include <linux/mutex.h> /* mutex */
140 #include <linux/module.h> /* needed by all modules */ 140 #include <linux/module.h> /* needed by all modules */
141 #include <linux/netdevice.h> /* netdevice */ 141 #include <linux/netdevice.h> /* netdevice */
142 #include <linux/etherdevice.h> /* ethernet address classification */ 142 #include <linux/etherdevice.h> /* ethernet address classification */
143 #include <linux/if_ether.h> /* ethernet header */ 143 #include <linux/if_ether.h> /* ethernet header */
144 #include <linux/poll.h> /* poll_table */ 144 #include <linux/poll.h> /* poll_table */
145 #include <linux/kthread.h> /* kernel threads */ 145 #include <linux/kthread.h> /* kernel threads */
146 #include <linux/pkt_sched.h> /* schedule types */ 146 #include <linux/pkt_sched.h> /* schedule types */
147 #include <linux/workqueue.h> /* workqueue */ 147 #include <linux/workqueue.h> /* workqueue */
148 #include <linux/percpu.h> 148 #include <linux/percpu.h>
149 #include <linux/slab.h> 149 #include <linux/slab.h>
150 #include <net/sock.h> /* struct sock */ 150 #include <net/sock.h> /* struct sock */
151 #include <linux/jiffies.h> 151 #include <linux/jiffies.h>
152 #include <linux/seq_file.h> 152 #include <linux/seq_file.h>
153 #include "types.h" 153 #include "types.h"
154 154
155 extern char batadv_routing_algo[]; 155 extern char batadv_routing_algo[];
156 extern struct list_head batadv_hardif_list; 156 extern struct list_head batadv_hardif_list;
157 157
158 extern unsigned char batadv_broadcast_addr[]; 158 extern unsigned char batadv_broadcast_addr[];
159 extern struct workqueue_struct *batadv_event_workqueue; 159 extern struct workqueue_struct *batadv_event_workqueue;
160 160
161 int batadv_mesh_init(struct net_device *soft_iface); 161 int batadv_mesh_init(struct net_device *soft_iface);
162 void batadv_mesh_free(struct net_device *soft_iface); 162 void batadv_mesh_free(struct net_device *soft_iface);
163 int batadv_is_my_mac(const uint8_t *addr); 163 int batadv_is_my_mac(const uint8_t *addr);
164 struct batadv_hard_iface * 164 struct batadv_hard_iface *
165 batadv_seq_print_text_primary_if_get(struct seq_file *seq); 165 batadv_seq_print_text_primary_if_get(struct seq_file *seq);
166 int batadv_batman_skb_recv(struct sk_buff *skb, struct net_device *dev, 166 int batadv_batman_skb_recv(struct sk_buff *skb, struct net_device *dev,
167 struct packet_type *ptype, 167 struct packet_type *ptype,
168 struct net_device *orig_dev); 168 struct net_device *orig_dev);
169 int 169 int
170 batadv_recv_handler_register(uint8_t packet_type, 170 batadv_recv_handler_register(uint8_t packet_type,
171 int (*recv_handler)(struct sk_buff *, 171 int (*recv_handler)(struct sk_buff *,
172 struct batadv_hard_iface *)); 172 struct batadv_hard_iface *));
173 void batadv_recv_handler_unregister(uint8_t packet_type); 173 void batadv_recv_handler_unregister(uint8_t packet_type);
174 int batadv_algo_register(struct batadv_algo_ops *bat_algo_ops); 174 int batadv_algo_register(struct batadv_algo_ops *bat_algo_ops);
175 int batadv_algo_select(struct batadv_priv *bat_priv, char *name); 175 int batadv_algo_select(struct batadv_priv *bat_priv, char *name);
176 int batadv_algo_seq_print_text(struct seq_file *seq, void *offset); 176 int batadv_algo_seq_print_text(struct seq_file *seq, void *offset);
177 __be32 batadv_skb_crc32(struct sk_buff *skb, u8 *payload_ptr); 177 __be32 batadv_skb_crc32(struct sk_buff *skb, u8 *payload_ptr);
178 178
179 /** 179 /**
180 * enum batadv_dbg_level - available log levels 180 * enum batadv_dbg_level - available log levels
181 * @BATADV_DBG_BATMAN: OGM and TQ computations related messages 181 * @BATADV_DBG_BATMAN: OGM and TQ computations related messages
182 * @BATADV_DBG_ROUTES: route added / changed / deleted 182 * @BATADV_DBG_ROUTES: route added / changed / deleted
183 * @BATADV_DBG_TT: translation table messages 183 * @BATADV_DBG_TT: translation table messages
184 * @BATADV_DBG_BLA: bridge loop avoidance messages 184 * @BATADV_DBG_BLA: bridge loop avoidance messages
185 * @BATADV_DBG_DAT: ARP snooping and DAT related messages 185 * @BATADV_DBG_DAT: ARP snooping and DAT related messages
186 * @BATADV_DBG_ALL: the union of all the above log levels 186 * @BATADV_DBG_ALL: the union of all the above log levels
187 */ 187 */
188 enum batadv_dbg_level { 188 enum batadv_dbg_level {
189 BATADV_DBG_BATMAN = BIT(0), 189 BATADV_DBG_BATMAN = BIT(0),
190 BATADV_DBG_ROUTES = BIT(1), 190 BATADV_DBG_ROUTES = BIT(1),
191 BATADV_DBG_TT = BIT(2), 191 BATADV_DBG_TT = BIT(2),
192 BATADV_DBG_BLA = BIT(3), 192 BATADV_DBG_BLA = BIT(3),
193 BATADV_DBG_DAT = BIT(4), 193 BATADV_DBG_DAT = BIT(4),
194 BATADV_DBG_ALL = 31, 194 BATADV_DBG_ALL = 31,
195 }; 195 };
196 196
197 #ifdef CONFIG_BATMAN_ADV_DEBUG 197 #ifdef CONFIG_BATMAN_ADV_DEBUG
198 int batadv_debug_log(struct batadv_priv *bat_priv, const char *fmt, ...) 198 int batadv_debug_log(struct batadv_priv *bat_priv, const char *fmt, ...)
199 __printf(2, 3); 199 __printf(2, 3);
200 200
201 #define batadv_dbg(type, bat_priv, fmt, arg...) \ 201 #define batadv_dbg(type, bat_priv, fmt, arg...) \
202 do { \ 202 do { \
203 if (atomic_read(&bat_priv->log_level) & type) \ 203 if (atomic_read(&bat_priv->log_level) & type) \
204 batadv_debug_log(bat_priv, fmt, ## arg);\ 204 batadv_debug_log(bat_priv, fmt, ## arg);\
205 } \ 205 } \
206 while (0) 206 while (0)
207 #else /* !CONFIG_BATMAN_ADV_DEBUG */ 207 #else /* !CONFIG_BATMAN_ADV_DEBUG */
208 __printf(3, 4) 208 __printf(3, 4)
209 static inline void batadv_dbg(int type __always_unused, 209 static inline void batadv_dbg(int type __always_unused,
210 struct batadv_priv *bat_priv __always_unused, 210 struct batadv_priv *bat_priv __always_unused,
211 const char *fmt __always_unused, ...) 211 const char *fmt __always_unused, ...)
212 { 212 {
213 } 213 }
214 #endif 214 #endif
215 215
216 #define batadv_info(net_dev, fmt, arg...) \ 216 #define batadv_info(net_dev, fmt, arg...) \
217 do { \ 217 do { \
218 struct net_device *_netdev = (net_dev); \ 218 struct net_device *_netdev = (net_dev); \
219 struct batadv_priv *_batpriv = netdev_priv(_netdev); \ 219 struct batadv_priv *_batpriv = netdev_priv(_netdev); \
220 batadv_dbg(BATADV_DBG_ALL, _batpriv, fmt, ## arg); \ 220 batadv_dbg(BATADV_DBG_ALL, _batpriv, fmt, ## arg); \
221 pr_info("%s: " fmt, _netdev->name, ## arg); \ 221 pr_info("%s: " fmt, _netdev->name, ## arg); \
222 } while (0) 222 } while (0)
223 #define batadv_err(net_dev, fmt, arg...) \ 223 #define batadv_err(net_dev, fmt, arg...) \
224 do { \ 224 do { \
225 struct net_device *_netdev = (net_dev); \ 225 struct net_device *_netdev = (net_dev); \
226 struct batadv_priv *_batpriv = netdev_priv(_netdev); \ 226 struct batadv_priv *_batpriv = netdev_priv(_netdev); \
227 batadv_dbg(BATADV_DBG_ALL, _batpriv, fmt, ## arg); \ 227 batadv_dbg(BATADV_DBG_ALL, _batpriv, fmt, ## arg); \
228 pr_err("%s: " fmt, _netdev->name, ## arg); \ 228 pr_err("%s: " fmt, _netdev->name, ## arg); \
229 } while (0) 229 } while (0)
230 230
231 /* returns 1 if they are the same ethernet addr 231 /* returns 1 if they are the same ethernet addr
232 * 232 *
233 * note: can't use compare_ether_addr() as it requires aligned memory 233 * note: can't use compare_ether_addr() as it requires aligned memory
234 */ 234 */
235 static inline int batadv_compare_eth(const void *data1, const void *data2) 235 static inline int batadv_compare_eth(const void *data1, const void *data2)
236 { 236 {
237 return (memcmp(data1, data2, ETH_ALEN) == 0 ? 1 : 0); 237 return (memcmp(data1, data2, ETH_ALEN) == 0 ? 1 : 0);
238 } 238 }
239 239
240 /** 240 /**
241 * has_timed_out - compares current time (jiffies) and timestamp + timeout 241 * has_timed_out - compares current time (jiffies) and timestamp + timeout
242 * @timestamp: base value to compare with (in jiffies) 242 * @timestamp: base value to compare with (in jiffies)
243 * @timeout: added to base value before comparing (in milliseconds) 243 * @timeout: added to base value before comparing (in milliseconds)
244 * 244 *
245 * Returns true if current time is after timestamp + timeout 245 * Returns true if current time is after timestamp + timeout
246 */ 246 */
247 static inline bool batadv_has_timed_out(unsigned long timestamp, 247 static inline bool batadv_has_timed_out(unsigned long timestamp,
248 unsigned int timeout) 248 unsigned int timeout)
249 { 249 {
250 return time_is_before_jiffies(timestamp + msecs_to_jiffies(timeout)); 250 return time_is_before_jiffies(timestamp + msecs_to_jiffies(timeout));
251 } 251 }
252 252
253 #define batadv_atomic_dec_not_zero(v) atomic_add_unless((v), -1, 0) 253 #define batadv_atomic_dec_not_zero(v) atomic_add_unless((v), -1, 0)
254 254
255 /* Returns the smallest signed integer in two's complement with the sizeof x */ 255 /* Returns the smallest signed integer in two's complement with the sizeof x */
256 #define batadv_smallest_signed_int(x) (1u << (7u + 8u * (sizeof(x) - 1u))) 256 #define batadv_smallest_signed_int(x) (1u << (7u + 8u * (sizeof(x) - 1u)))
257 257
258 /* Checks if a sequence number x is a predecessor/successor of y. 258 /* Checks if a sequence number x is a predecessor/successor of y.
259 * they handle overflows/underflows and can correctly check for a 259 * they handle overflows/underflows and can correctly check for a
260 * predecessor/successor unless the variable sequence number has grown by 260 * predecessor/successor unless the variable sequence number has grown by
261 * more then 2**(bitwidth(x)-1)-1. 261 * more then 2**(bitwidth(x)-1)-1.
262 * This means that for a uint8_t with the maximum value 255, it would think: 262 * This means that for a uint8_t with the maximum value 255, it would think:
263 * - when adding nothing - it is neither a predecessor nor a successor 263 * - when adding nothing - it is neither a predecessor nor a successor
264 * - before adding more than 127 to the starting value - it is a predecessor, 264 * - before adding more than 127 to the starting value - it is a predecessor,
265 * - when adding 128 - it is neither a predecessor nor a successor, 265 * - when adding 128 - it is neither a predecessor nor a successor,
266 * - after adding more than 127 to the starting value - it is a successor 266 * - after adding more than 127 to the starting value - it is a successor
267 */ 267 */
268 #define batadv_seq_before(x, y) ({typeof(x) _d1 = (x); \ 268 #define batadv_seq_before(x, y) ({typeof(x) _d1 = (x); \
269 typeof(y) _d2 = (y); \ 269 typeof(y) _d2 = (y); \
270 typeof(x) _dummy = (_d1 - _d2); \ 270 typeof(x) _dummy = (_d1 - _d2); \
271 (void) (&_d1 == &_d2); \ 271 (void) (&_d1 == &_d2); \
272 _dummy > batadv_smallest_signed_int(_dummy); }) 272 _dummy > batadv_smallest_signed_int(_dummy); })
273 #define batadv_seq_after(x, y) batadv_seq_before(y, x) 273 #define batadv_seq_after(x, y) batadv_seq_before(y, x)
274 274
275 /* Stop preemption on local cpu while incrementing the counter */ 275 /* Stop preemption on local cpu while incrementing the counter */
276 static inline void batadv_add_counter(struct batadv_priv *bat_priv, size_t idx, 276 static inline void batadv_add_counter(struct batadv_priv *bat_priv, size_t idx,
277 size_t count) 277 size_t count)
278 { 278 {
279 int cpu = get_cpu(); 279 int cpu = get_cpu();
280 per_cpu_ptr(bat_priv->bat_counters, cpu)[idx] += count; 280 per_cpu_ptr(bat_priv->bat_counters, cpu)[idx] += count;
281 put_cpu(); 281 put_cpu();
282 } 282 }
283 283
284 #define batadv_inc_counter(b, i) batadv_add_counter(b, i, 1) 284 #define batadv_inc_counter(b, i) batadv_add_counter(b, i, 1)
285 285
286 /* Sum and return the cpu-local counters for index 'idx' */ 286 /* Sum and return the cpu-local counters for index 'idx' */
287 static inline uint64_t batadv_sum_counter(struct batadv_priv *bat_priv, 287 static inline uint64_t batadv_sum_counter(struct batadv_priv *bat_priv,
288 size_t idx) 288 size_t idx)
289 { 289 {
290 uint64_t *counters, sum = 0; 290 uint64_t *counters, sum = 0;
291 int cpu; 291 int cpu;
292 292
293 for_each_possible_cpu(cpu) { 293 for_each_possible_cpu(cpu) {
294 counters = per_cpu_ptr(bat_priv->bat_counters, cpu); 294 counters = per_cpu_ptr(bat_priv->bat_counters, cpu);
295 sum += counters[idx]; 295 sum += counters[idx];
296 } 296 }
297 297
298 return sum; 298 return sum;
299 } 299 }
300 300
301 #endif /* _NET_BATMAN_ADV_MAIN_H_ */ 301 #endif /* _NET_BATMAN_ADV_MAIN_H_ */
302 302