Eric Lee / smarc-ti-linux-kernel

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Commit 05e7c99136554789e4cc060a63334ccaa08ad62d

Authored by Stanislaw Gruszka
Committed by John W. Linville
1 parent 1b68e67620

mac80211: fix conn_mon_timer running after disassociate 

Low level driver could pass rx frames to us after disassociate, what
can lead to run conn_mon_timer by ieee80211_sta_rx_notify(). That
is obviously wrong, but nothing happens until we unload modules and
resources are used after free. If kernel debugging is enabled following
warning could be observed:

WARNING: at lib/debugobjects.c:259 debug_print_object+0x65/0x70()
Hardware name: HP xw8600 Workstation
ODEBUG: free active (active state 0) object type: timer_list
Modules linked in: iwlagn(-) iwlcore mac80211 cfg80211 aes_x86_64 aes_generic fuse cpufreq_ondemand acpi_cpufreq freq_table mperf xt_physdev ipt_REJECT nf_conntrack_ipv4 nf_defrag_ipv4 iptable_filter ip_tables ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 xt_state nf_conntrack ip6table_filter ip6_tables ipv6 ext3 jbd dm_mirror dm_region_hash dm_log dm_mod uinput hp_wmi sparse_keymap sg wmi arc4 microcode serio_raw ecb tg3 shpchp rfkill ext4 mbcache jbd2 sr_mod cdrom sd_mod crc_t10dif firewire_ohci firewire_core crc_itu_t mptsas mptscsih mptbase scsi_transport_sas ahci libahci pata_acpi ata_generic ata_piix floppy nouveau ttm drm_kms_helper drm i2c_algo_bit i2c_core video [last unloaded: cfg80211]
Pid: 13827, comm: rmmod Tainted: G        W   2.6.38-rc4-wl+ #22
Call Trace:
 [<ffffffff810649cf>] ? warn_slowpath_common+0x7f/0xc0
 [<ffffffff81064ac6>] ? warn_slowpath_fmt+0x46/0x50
 [<ffffffff81226fc5>] ? debug_print_object+0x65/0x70
 [<ffffffff81227625>] ? debug_check_no_obj_freed+0x125/0x210
 [<ffffffff8109ebd7>] ? debug_check_no_locks_freed+0xf7/0x170
 [<ffffffff81156092>] ? kfree+0xc2/0x2f0
 [<ffffffff813ec5c5>] ? netdev_release+0x45/0x60
 [<ffffffff812f1067>] ? device_release+0x27/0xa0
 [<ffffffff81216ddd>] ? kobject_release+0x8d/0x1a0
 [<ffffffff81216d50>] ? kobject_release+0x0/0x1a0
 [<ffffffff812183b7>] ? kref_put+0x37/0x70
 [<ffffffff81216c57>] ? kobject_put+0x27/0x60
 [<ffffffff813d5d1b>] ? netdev_run_todo+0x1ab/0x270
 [<ffffffff813e771e>] ? rtnl_unlock+0xe/0x10
 [<ffffffffa0581188>] ? ieee80211_unregister_hw+0x58/0x120 [mac80211]
 [<ffffffffa0377ed7>] ? iwl_pci_remove+0xdb/0x22a [iwlagn]
 [<ffffffff8123cde2>] ? pci_device_remove+0x52/0x120
 [<ffffffff812f5205>] ? __device_release_driver+0x75/0xe0
 [<ffffffff812f5348>] ? driver_detach+0xd8/0xe0
 [<ffffffff812f4111>] ? bus_remove_driver+0x91/0x100
 [<ffffffff812f5b62>] ? driver_unregister+0x62/0xa0
 [<ffffffff8123d194>] ? pci_unregister_driver+0x44/0xa0
 [<ffffffffa0377df5>] ? iwl_exit+0x15/0x1c [iwlagn]
 [<ffffffff810ab492>] ? sys_delete_module+0x1a2/0x270
 [<ffffffff81498889>] ? trace_hardirqs_on_thunk+0x3a/0x3f
 [<ffffffff8100bf42>] ? system_call_fastpath+0x16/0x1b

Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

Showing 1 changed file with 6 additions and 0 deletions Inline Diff

1 /* 1 /*
2 * BSS client mode implementation 2 * BSS client mode implementation
3 * Copyright 2003-2008, Jouni Malinen <j@w1.fi> 3 * Copyright 2003-2008, Jouni Malinen <j@w1.fi>
4 * Copyright 2004, Instant802 Networks, Inc. 4 * Copyright 2004, Instant802 Networks, Inc.
5 * Copyright 2005, Devicescape Software, Inc. 5 * Copyright 2005, Devicescape Software, Inc.
6 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz> 6 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
7 * Copyright 2007, Michael Wu <flamingice@sourmilk.net> 7 * Copyright 2007, Michael Wu <flamingice@sourmilk.net>
8 * 8 *
9 * This program is free software; you can redistribute it and/or modify 9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as 10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation. 11 * published by the Free Software Foundation.
12 */ 12 */
13 13
14 #include <linux/delay.h> 14 #include <linux/delay.h>
15 #include <linux/if_ether.h> 15 #include <linux/if_ether.h>
16 #include <linux/skbuff.h> 16 #include <linux/skbuff.h>
17 #include <linux/if_arp.h> 17 #include <linux/if_arp.h>
18 #include <linux/etherdevice.h> 18 #include <linux/etherdevice.h>
19 #include <linux/rtnetlink.h> 19 #include <linux/rtnetlink.h>
20 #include <linux/pm_qos_params.h> 20 #include <linux/pm_qos_params.h>
21 #include <linux/crc32.h> 21 #include <linux/crc32.h>
22 #include <linux/slab.h> 22 #include <linux/slab.h>
23 #include <net/mac80211.h> 23 #include <net/mac80211.h>
24 #include <asm/unaligned.h> 24 #include <asm/unaligned.h>
25 25
26 #include "ieee80211_i.h" 26 #include "ieee80211_i.h"
27 #include "driver-ops.h" 27 #include "driver-ops.h"
28 #include "rate.h" 28 #include "rate.h"
29 #include "led.h" 29 #include "led.h"
30 30
31 #define IEEE80211_MAX_NULLFUNC_TRIES 2 31 #define IEEE80211_MAX_NULLFUNC_TRIES 2
32 #define IEEE80211_MAX_PROBE_TRIES 5 32 #define IEEE80211_MAX_PROBE_TRIES 5
33 33
34 /* 34 /*
35 * Beacon loss timeout is calculated as N frames times the 35 * Beacon loss timeout is calculated as N frames times the
36 * advertised beacon interval. This may need to be somewhat 36 * advertised beacon interval. This may need to be somewhat
37 * higher than what hardware might detect to account for 37 * higher than what hardware might detect to account for
38 * delays in the host processing frames. But since we also 38 * delays in the host processing frames. But since we also
39 * probe on beacon miss before declaring the connection lost 39 * probe on beacon miss before declaring the connection lost
40 * default to what we want. 40 * default to what we want.
41 */ 41 */
42 #define IEEE80211_BEACON_LOSS_COUNT 7 42 #define IEEE80211_BEACON_LOSS_COUNT 7
43 43
44 /* 44 /*
45 * Time the connection can be idle before we probe 45 * Time the connection can be idle before we probe
46 * it to see if we can still talk to the AP. 46 * it to see if we can still talk to the AP.
47 */ 47 */
48 #define IEEE80211_CONNECTION_IDLE_TIME (30 * HZ) 48 #define IEEE80211_CONNECTION_IDLE_TIME (30 * HZ)
49 /* 49 /*
50 * Time we wait for a probe response after sending 50 * Time we wait for a probe response after sending
51 * a probe request because of beacon loss or for 51 * a probe request because of beacon loss or for
52 * checking the connection still works. 52 * checking the connection still works.
53 */ 53 */
54 #define IEEE80211_PROBE_WAIT (HZ / 2) 54 #define IEEE80211_PROBE_WAIT (HZ / 2)
55 55
56 /* 56 /*
57 * Weight given to the latest Beacon frame when calculating average signal 57 * Weight given to the latest Beacon frame when calculating average signal
58 * strength for Beacon frames received in the current BSS. This must be 58 * strength for Beacon frames received in the current BSS. This must be
59 * between 1 and 15. 59 * between 1 and 15.
60 */ 60 */
61 #define IEEE80211_SIGNAL_AVE_WEIGHT 3 61 #define IEEE80211_SIGNAL_AVE_WEIGHT 3
62 62
63 /* 63 /*
64 * How many Beacon frames need to have been used in average signal strength 64 * How many Beacon frames need to have been used in average signal strength
65 * before starting to indicate signal change events. 65 * before starting to indicate signal change events.
66 */ 66 */
67 #define IEEE80211_SIGNAL_AVE_MIN_COUNT 4 67 #define IEEE80211_SIGNAL_AVE_MIN_COUNT 4
68 68
69 #define TMR_RUNNING_TIMER 0 69 #define TMR_RUNNING_TIMER 0
70 #define TMR_RUNNING_CHANSW 1 70 #define TMR_RUNNING_CHANSW 1
71 71
72 /* 72 /*
73 * All cfg80211 functions have to be called outside a locked 73 * All cfg80211 functions have to be called outside a locked
74 * section so that they can acquire a lock themselves... This 74 * section so that they can acquire a lock themselves... This
75 * is much simpler than queuing up things in cfg80211, but we 75 * is much simpler than queuing up things in cfg80211, but we
76 * do need some indirection for that here. 76 * do need some indirection for that here.
77 */ 77 */
78 enum rx_mgmt_action { 78 enum rx_mgmt_action {
79 /* no action required */ 79 /* no action required */
80 RX_MGMT_NONE, 80 RX_MGMT_NONE,
81 81
82 /* caller must call cfg80211_send_rx_auth() */ 82 /* caller must call cfg80211_send_rx_auth() */
83 RX_MGMT_CFG80211_AUTH, 83 RX_MGMT_CFG80211_AUTH,
84 84
85 /* caller must call cfg80211_send_rx_assoc() */ 85 /* caller must call cfg80211_send_rx_assoc() */
86 RX_MGMT_CFG80211_ASSOC, 86 RX_MGMT_CFG80211_ASSOC,
87 87
88 /* caller must call cfg80211_send_deauth() */ 88 /* caller must call cfg80211_send_deauth() */
89 RX_MGMT_CFG80211_DEAUTH, 89 RX_MGMT_CFG80211_DEAUTH,
90 90
91 /* caller must call cfg80211_send_disassoc() */ 91 /* caller must call cfg80211_send_disassoc() */
92 RX_MGMT_CFG80211_DISASSOC, 92 RX_MGMT_CFG80211_DISASSOC,
93 93
94 /* caller must tell cfg80211 about internal error */ 94 /* caller must tell cfg80211 about internal error */
95 RX_MGMT_CFG80211_ASSOC_ERROR, 95 RX_MGMT_CFG80211_ASSOC_ERROR,
96 }; 96 };
97 97
98 /* utils */ 98 /* utils */
99 static inline void ASSERT_MGD_MTX(struct ieee80211_if_managed *ifmgd) 99 static inline void ASSERT_MGD_MTX(struct ieee80211_if_managed *ifmgd)
100 { 100 {
101 lockdep_assert_held(&ifmgd->mtx); 101 lockdep_assert_held(&ifmgd->mtx);
102 } 102 }
103 103
104 /* 104 /*
105 * We can have multiple work items (and connection probing) 105 * We can have multiple work items (and connection probing)
106 * scheduling this timer, but we need to take care to only 106 * scheduling this timer, but we need to take care to only
107 * reschedule it when it should fire _earlier_ than it was 107 * reschedule it when it should fire _earlier_ than it was
108 * asked for before, or if it's not pending right now. This 108 * asked for before, or if it's not pending right now. This
109 * function ensures that. Note that it then is required to 109 * function ensures that. Note that it then is required to
110 * run this function for all timeouts after the first one 110 * run this function for all timeouts after the first one
111 * has happened -- the work that runs from this timer will 111 * has happened -- the work that runs from this timer will
112 * do that. 112 * do that.
113 */ 113 */
114 static void run_again(struct ieee80211_if_managed *ifmgd, 114 static void run_again(struct ieee80211_if_managed *ifmgd,
115 unsigned long timeout) 115 unsigned long timeout)
116 { 116 {
117 ASSERT_MGD_MTX(ifmgd); 117 ASSERT_MGD_MTX(ifmgd);
118 118
119 if (!timer_pending(&ifmgd->timer) || 119 if (!timer_pending(&ifmgd->timer) ||
120 time_before(timeout, ifmgd->timer.expires)) 120 time_before(timeout, ifmgd->timer.expires))
121 mod_timer(&ifmgd->timer, timeout); 121 mod_timer(&ifmgd->timer, timeout);
122 } 122 }
123 123
124 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata) 124 void ieee80211_sta_reset_beacon_monitor(struct ieee80211_sub_if_data *sdata)
125 { 125 {
126 if (sdata->local->hw.flags & IEEE80211_HW_BEACON_FILTER) 126 if (sdata->local->hw.flags & IEEE80211_HW_BEACON_FILTER)
127 return; 127 return;
128 128
129 mod_timer(&sdata->u.mgd.bcn_mon_timer, 129 mod_timer(&sdata->u.mgd.bcn_mon_timer,
130 round_jiffies_up(jiffies + sdata->u.mgd.beacon_timeout)); 130 round_jiffies_up(jiffies + sdata->u.mgd.beacon_timeout));
131 } 131 }
132 132
133 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata) 133 void ieee80211_sta_reset_conn_monitor(struct ieee80211_sub_if_data *sdata)
134 { 134 {
135 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 135 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
136 136
137 if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR) 137 if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
138 return; 138 return;
139 139
140 mod_timer(&sdata->u.mgd.conn_mon_timer, 140 mod_timer(&sdata->u.mgd.conn_mon_timer,
141 round_jiffies_up(jiffies + IEEE80211_CONNECTION_IDLE_TIME)); 141 round_jiffies_up(jiffies + IEEE80211_CONNECTION_IDLE_TIME));
142 142
143 ifmgd->probe_send_count = 0; 143 ifmgd->probe_send_count = 0;
144 } 144 }
145 145
146 static int ecw2cw(int ecw) 146 static int ecw2cw(int ecw)
147 { 147 {
148 return (1 << ecw) - 1; 148 return (1 << ecw) - 1;
149 } 149 }
150 150
151 /* 151 /*
152 * ieee80211_enable_ht should be called only after the operating band 152 * ieee80211_enable_ht should be called only after the operating band
153 * has been determined as ht configuration depends on the hw's 153 * has been determined as ht configuration depends on the hw's
154 * HT abilities for a specific band. 154 * HT abilities for a specific band.
155 */ 155 */
156 static u32 ieee80211_enable_ht(struct ieee80211_sub_if_data *sdata, 156 static u32 ieee80211_enable_ht(struct ieee80211_sub_if_data *sdata,
157 struct ieee80211_ht_info *hti, 157 struct ieee80211_ht_info *hti,
158 const u8 *bssid, u16 ap_ht_cap_flags) 158 const u8 *bssid, u16 ap_ht_cap_flags)
159 { 159 {
160 struct ieee80211_local *local = sdata->local; 160 struct ieee80211_local *local = sdata->local;
161 struct ieee80211_supported_band *sband; 161 struct ieee80211_supported_band *sband;
162 struct sta_info *sta; 162 struct sta_info *sta;
163 u32 changed = 0; 163 u32 changed = 0;
164 u16 ht_opmode; 164 u16 ht_opmode;
165 bool enable_ht = true; 165 bool enable_ht = true;
166 enum nl80211_channel_type prev_chantype; 166 enum nl80211_channel_type prev_chantype;
167 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT; 167 enum nl80211_channel_type channel_type = NL80211_CHAN_NO_HT;
168 168
169 sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; 169 sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
170 170
171 prev_chantype = sdata->vif.bss_conf.channel_type; 171 prev_chantype = sdata->vif.bss_conf.channel_type;
172 172
173 /* HT is not supported */ 173 /* HT is not supported */
174 if (!sband->ht_cap.ht_supported) 174 if (!sband->ht_cap.ht_supported)
175 enable_ht = false; 175 enable_ht = false;
176 176
177 /* check that channel matches the right operating channel */ 177 /* check that channel matches the right operating channel */
178 if (local->hw.conf.channel->center_freq != 178 if (local->hw.conf.channel->center_freq !=
179 ieee80211_channel_to_frequency(hti->control_chan)) 179 ieee80211_channel_to_frequency(hti->control_chan))
180 enable_ht = false; 180 enable_ht = false;
181 181
182 if (enable_ht) { 182 if (enable_ht) {
183 channel_type = NL80211_CHAN_HT20; 183 channel_type = NL80211_CHAN_HT20;
184 184
185 if (!(ap_ht_cap_flags & IEEE80211_HT_CAP_40MHZ_INTOLERANT) && 185 if (!(ap_ht_cap_flags & IEEE80211_HT_CAP_40MHZ_INTOLERANT) &&
186 (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) && 186 (sband->ht_cap.cap & IEEE80211_HT_CAP_SUP_WIDTH_20_40) &&
187 (hti->ht_param & IEEE80211_HT_PARAM_CHAN_WIDTH_ANY)) { 187 (hti->ht_param & IEEE80211_HT_PARAM_CHAN_WIDTH_ANY)) {
188 switch(hti->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) { 188 switch(hti->ht_param & IEEE80211_HT_PARAM_CHA_SEC_OFFSET) {
189 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE: 189 case IEEE80211_HT_PARAM_CHA_SEC_ABOVE:
190 if (!(local->hw.conf.channel->flags & 190 if (!(local->hw.conf.channel->flags &
191 IEEE80211_CHAN_NO_HT40PLUS)) 191 IEEE80211_CHAN_NO_HT40PLUS))
192 channel_type = NL80211_CHAN_HT40PLUS; 192 channel_type = NL80211_CHAN_HT40PLUS;
193 break; 193 break;
194 case IEEE80211_HT_PARAM_CHA_SEC_BELOW: 194 case IEEE80211_HT_PARAM_CHA_SEC_BELOW:
195 if (!(local->hw.conf.channel->flags & 195 if (!(local->hw.conf.channel->flags &
196 IEEE80211_CHAN_NO_HT40MINUS)) 196 IEEE80211_CHAN_NO_HT40MINUS))
197 channel_type = NL80211_CHAN_HT40MINUS; 197 channel_type = NL80211_CHAN_HT40MINUS;
198 break; 198 break;
199 } 199 }
200 } 200 }
201 } 201 }
202 202
203 if (local->tmp_channel) 203 if (local->tmp_channel)
204 local->tmp_channel_type = channel_type; 204 local->tmp_channel_type = channel_type;
205 205
206 if (!ieee80211_set_channel_type(local, sdata, channel_type)) { 206 if (!ieee80211_set_channel_type(local, sdata, channel_type)) {
207 /* can only fail due to HT40+/- mismatch */ 207 /* can only fail due to HT40+/- mismatch */
208 channel_type = NL80211_CHAN_HT20; 208 channel_type = NL80211_CHAN_HT20;
209 WARN_ON(!ieee80211_set_channel_type(local, sdata, channel_type)); 209 WARN_ON(!ieee80211_set_channel_type(local, sdata, channel_type));
210 } 210 }
211 211
212 /* channel_type change automatically detected */ 212 /* channel_type change automatically detected */
213 ieee80211_hw_config(local, 0); 213 ieee80211_hw_config(local, 0);
214 214
215 if (prev_chantype != channel_type) { 215 if (prev_chantype != channel_type) {
216 rcu_read_lock(); 216 rcu_read_lock();
217 sta = sta_info_get(sdata, bssid); 217 sta = sta_info_get(sdata, bssid);
218 if (sta) 218 if (sta)
219 rate_control_rate_update(local, sband, sta, 219 rate_control_rate_update(local, sband, sta,
220 IEEE80211_RC_HT_CHANGED, 220 IEEE80211_RC_HT_CHANGED,
221 channel_type); 221 channel_type);
222 rcu_read_unlock(); 222 rcu_read_unlock();
223 } 223 }
224 224
225 ht_opmode = le16_to_cpu(hti->operation_mode); 225 ht_opmode = le16_to_cpu(hti->operation_mode);
226 226
227 /* if bss configuration changed store the new one */ 227 /* if bss configuration changed store the new one */
228 if (sdata->ht_opmode_valid != enable_ht || 228 if (sdata->ht_opmode_valid != enable_ht ||
229 sdata->vif.bss_conf.ht_operation_mode != ht_opmode || 229 sdata->vif.bss_conf.ht_operation_mode != ht_opmode ||
230 prev_chantype != channel_type) { 230 prev_chantype != channel_type) {
231 changed |= BSS_CHANGED_HT; 231 changed |= BSS_CHANGED_HT;
232 sdata->vif.bss_conf.ht_operation_mode = ht_opmode; 232 sdata->vif.bss_conf.ht_operation_mode = ht_opmode;
233 sdata->ht_opmode_valid = enable_ht; 233 sdata->ht_opmode_valid = enable_ht;
234 } 234 }
235 235
236 return changed; 236 return changed;
237 } 237 }
238 238
239 /* frame sending functions */ 239 /* frame sending functions */
240 240
241 static void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata, 241 static void ieee80211_send_deauth_disassoc(struct ieee80211_sub_if_data *sdata,
242 const u8 *bssid, u16 stype, u16 reason, 242 const u8 *bssid, u16 stype, u16 reason,
243 void *cookie, bool send_frame) 243 void *cookie, bool send_frame)
244 { 244 {
245 struct ieee80211_local *local = sdata->local; 245 struct ieee80211_local *local = sdata->local;
246 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 246 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
247 struct sk_buff *skb; 247 struct sk_buff *skb;
248 struct ieee80211_mgmt *mgmt; 248 struct ieee80211_mgmt *mgmt;
249 249
250 skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt)); 250 skb = dev_alloc_skb(local->hw.extra_tx_headroom + sizeof(*mgmt));
251 if (!skb) { 251 if (!skb) {
252 printk(KERN_DEBUG "%s: failed to allocate buffer for " 252 printk(KERN_DEBUG "%s: failed to allocate buffer for "
253 "deauth/disassoc frame\n", sdata->name); 253 "deauth/disassoc frame\n", sdata->name);
254 return; 254 return;
255 } 255 }
256 skb_reserve(skb, local->hw.extra_tx_headroom); 256 skb_reserve(skb, local->hw.extra_tx_headroom);
257 257
258 mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24); 258 mgmt = (struct ieee80211_mgmt *) skb_put(skb, 24);
259 memset(mgmt, 0, 24); 259 memset(mgmt, 0, 24);
260 memcpy(mgmt->da, bssid, ETH_ALEN); 260 memcpy(mgmt->da, bssid, ETH_ALEN);
261 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); 261 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
262 memcpy(mgmt->bssid, bssid, ETH_ALEN); 262 memcpy(mgmt->bssid, bssid, ETH_ALEN);
263 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype); 263 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | stype);
264 skb_put(skb, 2); 264 skb_put(skb, 2);
265 /* u.deauth.reason_code == u.disassoc.reason_code */ 265 /* u.deauth.reason_code == u.disassoc.reason_code */
266 mgmt->u.deauth.reason_code = cpu_to_le16(reason); 266 mgmt->u.deauth.reason_code = cpu_to_le16(reason);
267 267
268 if (stype == IEEE80211_STYPE_DEAUTH) 268 if (stype == IEEE80211_STYPE_DEAUTH)
269 if (cookie) 269 if (cookie)
270 __cfg80211_send_deauth(sdata->dev, (u8 *)mgmt, skb->len); 270 __cfg80211_send_deauth(sdata->dev, (u8 *)mgmt, skb->len);
271 else 271 else
272 cfg80211_send_deauth(sdata->dev, (u8 *)mgmt, skb->len); 272 cfg80211_send_deauth(sdata->dev, (u8 *)mgmt, skb->len);
273 else 273 else
274 if (cookie) 274 if (cookie)
275 __cfg80211_send_disassoc(sdata->dev, (u8 *)mgmt, skb->len); 275 __cfg80211_send_disassoc(sdata->dev, (u8 *)mgmt, skb->len);
276 else 276 else
277 cfg80211_send_disassoc(sdata->dev, (u8 *)mgmt, skb->len); 277 cfg80211_send_disassoc(sdata->dev, (u8 *)mgmt, skb->len);
278 if (!(ifmgd->flags & IEEE80211_STA_MFP_ENABLED)) 278 if (!(ifmgd->flags & IEEE80211_STA_MFP_ENABLED))
279 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; 279 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
280 280
281 if (send_frame) 281 if (send_frame)
282 ieee80211_tx_skb(sdata, skb); 282 ieee80211_tx_skb(sdata, skb);
283 else 283 else
284 kfree_skb(skb); 284 kfree_skb(skb);
285 } 285 }
286 286
287 void ieee80211_send_pspoll(struct ieee80211_local *local, 287 void ieee80211_send_pspoll(struct ieee80211_local *local,
288 struct ieee80211_sub_if_data *sdata) 288 struct ieee80211_sub_if_data *sdata)
289 { 289 {
290 struct ieee80211_pspoll *pspoll; 290 struct ieee80211_pspoll *pspoll;
291 struct sk_buff *skb; 291 struct sk_buff *skb;
292 292
293 skb = ieee80211_pspoll_get(&local->hw, &sdata->vif); 293 skb = ieee80211_pspoll_get(&local->hw, &sdata->vif);
294 if (!skb) 294 if (!skb)
295 return; 295 return;
296 296
297 pspoll = (struct ieee80211_pspoll *) skb->data; 297 pspoll = (struct ieee80211_pspoll *) skb->data;
298 pspoll->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM); 298 pspoll->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
299 299
300 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; 300 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
301 ieee80211_tx_skb(sdata, skb); 301 ieee80211_tx_skb(sdata, skb);
302 } 302 }
303 303
304 void ieee80211_send_nullfunc(struct ieee80211_local *local, 304 void ieee80211_send_nullfunc(struct ieee80211_local *local,
305 struct ieee80211_sub_if_data *sdata, 305 struct ieee80211_sub_if_data *sdata,
306 int powersave) 306 int powersave)
307 { 307 {
308 struct sk_buff *skb; 308 struct sk_buff *skb;
309 struct ieee80211_hdr_3addr *nullfunc; 309 struct ieee80211_hdr_3addr *nullfunc;
310 310
311 skb = ieee80211_nullfunc_get(&local->hw, &sdata->vif); 311 skb = ieee80211_nullfunc_get(&local->hw, &sdata->vif);
312 if (!skb) 312 if (!skb)
313 return; 313 return;
314 314
315 nullfunc = (struct ieee80211_hdr_3addr *) skb->data; 315 nullfunc = (struct ieee80211_hdr_3addr *) skb->data;
316 if (powersave) 316 if (powersave)
317 nullfunc->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM); 317 nullfunc->frame_control |= cpu_to_le16(IEEE80211_FCTL_PM);
318 318
319 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; 319 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
320 ieee80211_tx_skb(sdata, skb); 320 ieee80211_tx_skb(sdata, skb);
321 } 321 }
322 322
323 static void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local, 323 static void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local,
324 struct ieee80211_sub_if_data *sdata) 324 struct ieee80211_sub_if_data *sdata)
325 { 325 {
326 struct sk_buff *skb; 326 struct sk_buff *skb;
327 struct ieee80211_hdr *nullfunc; 327 struct ieee80211_hdr *nullfunc;
328 __le16 fc; 328 __le16 fc;
329 329
330 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) 330 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
331 return; 331 return;
332 332
333 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 30); 333 skb = dev_alloc_skb(local->hw.extra_tx_headroom + 30);
334 if (!skb) { 334 if (!skb) {
335 printk(KERN_DEBUG "%s: failed to allocate buffer for 4addr " 335 printk(KERN_DEBUG "%s: failed to allocate buffer for 4addr "
336 "nullfunc frame\n", sdata->name); 336 "nullfunc frame\n", sdata->name);
337 return; 337 return;
338 } 338 }
339 skb_reserve(skb, local->hw.extra_tx_headroom); 339 skb_reserve(skb, local->hw.extra_tx_headroom);
340 340
341 nullfunc = (struct ieee80211_hdr *) skb_put(skb, 30); 341 nullfunc = (struct ieee80211_hdr *) skb_put(skb, 30);
342 memset(nullfunc, 0, 30); 342 memset(nullfunc, 0, 30);
343 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC | 343 fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC |
344 IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS); 344 IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS);
345 nullfunc->frame_control = fc; 345 nullfunc->frame_control = fc;
346 memcpy(nullfunc->addr1, sdata->u.mgd.bssid, ETH_ALEN); 346 memcpy(nullfunc->addr1, sdata->u.mgd.bssid, ETH_ALEN);
347 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN); 347 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
348 memcpy(nullfunc->addr3, sdata->u.mgd.bssid, ETH_ALEN); 348 memcpy(nullfunc->addr3, sdata->u.mgd.bssid, ETH_ALEN);
349 memcpy(nullfunc->addr4, sdata->vif.addr, ETH_ALEN); 349 memcpy(nullfunc->addr4, sdata->vif.addr, ETH_ALEN);
350 350
351 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT; 351 IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_INTFL_DONT_ENCRYPT;
352 ieee80211_tx_skb(sdata, skb); 352 ieee80211_tx_skb(sdata, skb);
353 } 353 }
354 354
355 /* spectrum management related things */ 355 /* spectrum management related things */
356 static void ieee80211_chswitch_work(struct work_struct *work) 356 static void ieee80211_chswitch_work(struct work_struct *work)
357 { 357 {
358 struct ieee80211_sub_if_data *sdata = 358 struct ieee80211_sub_if_data *sdata =
359 container_of(work, struct ieee80211_sub_if_data, u.mgd.chswitch_work); 359 container_of(work, struct ieee80211_sub_if_data, u.mgd.chswitch_work);
360 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 360 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
361 361
362 if (!ieee80211_sdata_running(sdata)) 362 if (!ieee80211_sdata_running(sdata))
363 return; 363 return;
364 364
365 mutex_lock(&ifmgd->mtx); 365 mutex_lock(&ifmgd->mtx);
366 if (!ifmgd->associated) 366 if (!ifmgd->associated)
367 goto out; 367 goto out;
368 368
369 sdata->local->oper_channel = sdata->local->csa_channel; 369 sdata->local->oper_channel = sdata->local->csa_channel;
370 if (!sdata->local->ops->channel_switch) { 370 if (!sdata->local->ops->channel_switch) {
371 /* call "hw_config" only if doing sw channel switch */ 371 /* call "hw_config" only if doing sw channel switch */
372 ieee80211_hw_config(sdata->local, 372 ieee80211_hw_config(sdata->local,
373 IEEE80211_CONF_CHANGE_CHANNEL); 373 IEEE80211_CONF_CHANGE_CHANNEL);
374 } 374 }
375 375
376 /* XXX: shouldn't really modify cfg80211-owned data! */ 376 /* XXX: shouldn't really modify cfg80211-owned data! */
377 ifmgd->associated->channel = sdata->local->oper_channel; 377 ifmgd->associated->channel = sdata->local->oper_channel;
378 378
379 ieee80211_wake_queues_by_reason(&sdata->local->hw, 379 ieee80211_wake_queues_by_reason(&sdata->local->hw,
380 IEEE80211_QUEUE_STOP_REASON_CSA); 380 IEEE80211_QUEUE_STOP_REASON_CSA);
381 out: 381 out:
382 ifmgd->flags &= ~IEEE80211_STA_CSA_RECEIVED; 382 ifmgd->flags &= ~IEEE80211_STA_CSA_RECEIVED;
383 mutex_unlock(&ifmgd->mtx); 383 mutex_unlock(&ifmgd->mtx);
384 } 384 }
385 385
386 void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success) 386 void ieee80211_chswitch_done(struct ieee80211_vif *vif, bool success)
387 { 387 {
388 struct ieee80211_sub_if_data *sdata; 388 struct ieee80211_sub_if_data *sdata;
389 struct ieee80211_if_managed *ifmgd; 389 struct ieee80211_if_managed *ifmgd;
390 390
391 sdata = vif_to_sdata(vif); 391 sdata = vif_to_sdata(vif);
392 ifmgd = &sdata->u.mgd; 392 ifmgd = &sdata->u.mgd;
393 393
394 trace_api_chswitch_done(sdata, success); 394 trace_api_chswitch_done(sdata, success);
395 if (!success) { 395 if (!success) {
396 /* 396 /*
397 * If the channel switch was not successful, stay 397 * If the channel switch was not successful, stay
398 * around on the old channel. We currently lack 398 * around on the old channel. We currently lack
399 * good handling of this situation, possibly we 399 * good handling of this situation, possibly we
400 * should just drop the association. 400 * should just drop the association.
401 */ 401 */
402 sdata->local->csa_channel = sdata->local->oper_channel; 402 sdata->local->csa_channel = sdata->local->oper_channel;
403 } 403 }
404 404
405 ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work); 405 ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work);
406 } 406 }
407 EXPORT_SYMBOL(ieee80211_chswitch_done); 407 EXPORT_SYMBOL(ieee80211_chswitch_done);
408 408
409 static void ieee80211_chswitch_timer(unsigned long data) 409 static void ieee80211_chswitch_timer(unsigned long data)
410 { 410 {
411 struct ieee80211_sub_if_data *sdata = 411 struct ieee80211_sub_if_data *sdata =
412 (struct ieee80211_sub_if_data *) data; 412 (struct ieee80211_sub_if_data *) data;
413 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 413 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
414 414
415 if (sdata->local->quiescing) { 415 if (sdata->local->quiescing) {
416 set_bit(TMR_RUNNING_CHANSW, &ifmgd->timers_running); 416 set_bit(TMR_RUNNING_CHANSW, &ifmgd->timers_running);
417 return; 417 return;
418 } 418 }
419 419
420 ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work); 420 ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work);
421 } 421 }
422 422
423 void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata, 423 void ieee80211_sta_process_chanswitch(struct ieee80211_sub_if_data *sdata,
424 struct ieee80211_channel_sw_ie *sw_elem, 424 struct ieee80211_channel_sw_ie *sw_elem,
425 struct ieee80211_bss *bss, 425 struct ieee80211_bss *bss,
426 u64 timestamp) 426 u64 timestamp)
427 { 427 {
428 struct cfg80211_bss *cbss = 428 struct cfg80211_bss *cbss =
429 container_of((void *)bss, struct cfg80211_bss, priv); 429 container_of((void *)bss, struct cfg80211_bss, priv);
430 struct ieee80211_channel *new_ch; 430 struct ieee80211_channel *new_ch;
431 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 431 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
432 int new_freq = ieee80211_channel_to_frequency(sw_elem->new_ch_num); 432 int new_freq = ieee80211_channel_to_frequency(sw_elem->new_ch_num);
433 433
434 ASSERT_MGD_MTX(ifmgd); 434 ASSERT_MGD_MTX(ifmgd);
435 435
436 if (!ifmgd->associated) 436 if (!ifmgd->associated)
437 return; 437 return;
438 438
439 if (sdata->local->scanning) 439 if (sdata->local->scanning)
440 return; 440 return;
441 441
442 /* Disregard subsequent beacons if we are already running a timer 442 /* Disregard subsequent beacons if we are already running a timer
443 processing a CSA */ 443 processing a CSA */
444 444
445 if (ifmgd->flags & IEEE80211_STA_CSA_RECEIVED) 445 if (ifmgd->flags & IEEE80211_STA_CSA_RECEIVED)
446 return; 446 return;
447 447
448 new_ch = ieee80211_get_channel(sdata->local->hw.wiphy, new_freq); 448 new_ch = ieee80211_get_channel(sdata->local->hw.wiphy, new_freq);
449 if (!new_ch || new_ch->flags & IEEE80211_CHAN_DISABLED) 449 if (!new_ch || new_ch->flags & IEEE80211_CHAN_DISABLED)
450 return; 450 return;
451 451
452 sdata->local->csa_channel = new_ch; 452 sdata->local->csa_channel = new_ch;
453 453
454 if (sdata->local->ops->channel_switch) { 454 if (sdata->local->ops->channel_switch) {
455 /* use driver's channel switch callback */ 455 /* use driver's channel switch callback */
456 struct ieee80211_channel_switch ch_switch; 456 struct ieee80211_channel_switch ch_switch;
457 memset(&ch_switch, 0, sizeof(ch_switch)); 457 memset(&ch_switch, 0, sizeof(ch_switch));
458 ch_switch.timestamp = timestamp; 458 ch_switch.timestamp = timestamp;
459 if (sw_elem->mode) { 459 if (sw_elem->mode) {
460 ch_switch.block_tx = true; 460 ch_switch.block_tx = true;
461 ieee80211_stop_queues_by_reason(&sdata->local->hw, 461 ieee80211_stop_queues_by_reason(&sdata->local->hw,
462 IEEE80211_QUEUE_STOP_REASON_CSA); 462 IEEE80211_QUEUE_STOP_REASON_CSA);
463 } 463 }
464 ch_switch.channel = new_ch; 464 ch_switch.channel = new_ch;
465 ch_switch.count = sw_elem->count; 465 ch_switch.count = sw_elem->count;
466 ifmgd->flags |= IEEE80211_STA_CSA_RECEIVED; 466 ifmgd->flags |= IEEE80211_STA_CSA_RECEIVED;
467 drv_channel_switch(sdata->local, &ch_switch); 467 drv_channel_switch(sdata->local, &ch_switch);
468 return; 468 return;
469 } 469 }
470 470
471 /* channel switch handled in software */ 471 /* channel switch handled in software */
472 if (sw_elem->count <= 1) { 472 if (sw_elem->count <= 1) {
473 ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work); 473 ieee80211_queue_work(&sdata->local->hw, &ifmgd->chswitch_work);
474 } else { 474 } else {
475 if (sw_elem->mode) 475 if (sw_elem->mode)
476 ieee80211_stop_queues_by_reason(&sdata->local->hw, 476 ieee80211_stop_queues_by_reason(&sdata->local->hw,
477 IEEE80211_QUEUE_STOP_REASON_CSA); 477 IEEE80211_QUEUE_STOP_REASON_CSA);
478 ifmgd->flags |= IEEE80211_STA_CSA_RECEIVED; 478 ifmgd->flags |= IEEE80211_STA_CSA_RECEIVED;
479 mod_timer(&ifmgd->chswitch_timer, 479 mod_timer(&ifmgd->chswitch_timer,
480 jiffies + 480 jiffies +
481 msecs_to_jiffies(sw_elem->count * 481 msecs_to_jiffies(sw_elem->count *
482 cbss->beacon_interval)); 482 cbss->beacon_interval));
483 } 483 }
484 } 484 }
485 485
486 static void ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata, 486 static void ieee80211_handle_pwr_constr(struct ieee80211_sub_if_data *sdata,
487 u16 capab_info, u8 *pwr_constr_elem, 487 u16 capab_info, u8 *pwr_constr_elem,
488 u8 pwr_constr_elem_len) 488 u8 pwr_constr_elem_len)
489 { 489 {
490 struct ieee80211_conf *conf = &sdata->local->hw.conf; 490 struct ieee80211_conf *conf = &sdata->local->hw.conf;
491 491
492 if (!(capab_info & WLAN_CAPABILITY_SPECTRUM_MGMT)) 492 if (!(capab_info & WLAN_CAPABILITY_SPECTRUM_MGMT))
493 return; 493 return;
494 494
495 /* Power constraint IE length should be 1 octet */ 495 /* Power constraint IE length should be 1 octet */
496 if (pwr_constr_elem_len != 1) 496 if (pwr_constr_elem_len != 1)
497 return; 497 return;
498 498
499 if ((*pwr_constr_elem <= conf->channel->max_power) && 499 if ((*pwr_constr_elem <= conf->channel->max_power) &&
500 (*pwr_constr_elem != sdata->local->power_constr_level)) { 500 (*pwr_constr_elem != sdata->local->power_constr_level)) {
501 sdata->local->power_constr_level = *pwr_constr_elem; 501 sdata->local->power_constr_level = *pwr_constr_elem;
502 ieee80211_hw_config(sdata->local, 0); 502 ieee80211_hw_config(sdata->local, 0);
503 } 503 }
504 } 504 }
505 505
506 void ieee80211_enable_dyn_ps(struct ieee80211_vif *vif) 506 void ieee80211_enable_dyn_ps(struct ieee80211_vif *vif)
507 { 507 {
508 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 508 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
509 struct ieee80211_local *local = sdata->local; 509 struct ieee80211_local *local = sdata->local;
510 struct ieee80211_conf *conf = &local->hw.conf; 510 struct ieee80211_conf *conf = &local->hw.conf;
511 511
512 WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION || 512 WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION ||
513 !(local->hw.flags & IEEE80211_HW_SUPPORTS_PS) || 513 !(local->hw.flags & IEEE80211_HW_SUPPORTS_PS) ||
514 (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)); 514 (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS));
515 515
516 local->disable_dynamic_ps = false; 516 local->disable_dynamic_ps = false;
517 conf->dynamic_ps_timeout = local->dynamic_ps_user_timeout; 517 conf->dynamic_ps_timeout = local->dynamic_ps_user_timeout;
518 } 518 }
519 EXPORT_SYMBOL(ieee80211_enable_dyn_ps); 519 EXPORT_SYMBOL(ieee80211_enable_dyn_ps);
520 520
521 void ieee80211_disable_dyn_ps(struct ieee80211_vif *vif) 521 void ieee80211_disable_dyn_ps(struct ieee80211_vif *vif)
522 { 522 {
523 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 523 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
524 struct ieee80211_local *local = sdata->local; 524 struct ieee80211_local *local = sdata->local;
525 struct ieee80211_conf *conf = &local->hw.conf; 525 struct ieee80211_conf *conf = &local->hw.conf;
526 526
527 WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION || 527 WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION ||
528 !(local->hw.flags & IEEE80211_HW_SUPPORTS_PS) || 528 !(local->hw.flags & IEEE80211_HW_SUPPORTS_PS) ||
529 (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)); 529 (local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS));
530 530
531 local->disable_dynamic_ps = true; 531 local->disable_dynamic_ps = true;
532 conf->dynamic_ps_timeout = 0; 532 conf->dynamic_ps_timeout = 0;
533 del_timer_sync(&local->dynamic_ps_timer); 533 del_timer_sync(&local->dynamic_ps_timer);
534 ieee80211_queue_work(&local->hw, 534 ieee80211_queue_work(&local->hw,
535 &local->dynamic_ps_enable_work); 535 &local->dynamic_ps_enable_work);
536 } 536 }
537 EXPORT_SYMBOL(ieee80211_disable_dyn_ps); 537 EXPORT_SYMBOL(ieee80211_disable_dyn_ps);
538 538
539 /* powersave */ 539 /* powersave */
540 static void ieee80211_enable_ps(struct ieee80211_local *local, 540 static void ieee80211_enable_ps(struct ieee80211_local *local,
541 struct ieee80211_sub_if_data *sdata) 541 struct ieee80211_sub_if_data *sdata)
542 { 542 {
543 struct ieee80211_conf *conf = &local->hw.conf; 543 struct ieee80211_conf *conf = &local->hw.conf;
544 544
545 /* 545 /*
546 * If we are scanning right now then the parameters will 546 * If we are scanning right now then the parameters will
547 * take effect when scan finishes. 547 * take effect when scan finishes.
548 */ 548 */
549 if (local->scanning) 549 if (local->scanning)
550 return; 550 return;
551 551
552 if (conf->dynamic_ps_timeout > 0 && 552 if (conf->dynamic_ps_timeout > 0 &&
553 !(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)) { 553 !(local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_PS)) {
554 mod_timer(&local->dynamic_ps_timer, jiffies + 554 mod_timer(&local->dynamic_ps_timer, jiffies +
555 msecs_to_jiffies(conf->dynamic_ps_timeout)); 555 msecs_to_jiffies(conf->dynamic_ps_timeout));
556 } else { 556 } else {
557 if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) 557 if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)
558 ieee80211_send_nullfunc(local, sdata, 1); 558 ieee80211_send_nullfunc(local, sdata, 1);
559 559
560 if ((local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) && 560 if ((local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) &&
561 (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)) 561 (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS))
562 return; 562 return;
563 563
564 conf->flags |= IEEE80211_CONF_PS; 564 conf->flags |= IEEE80211_CONF_PS;
565 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); 565 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
566 } 566 }
567 } 567 }
568 568
569 static void ieee80211_change_ps(struct ieee80211_local *local) 569 static void ieee80211_change_ps(struct ieee80211_local *local)
570 { 570 {
571 struct ieee80211_conf *conf = &local->hw.conf; 571 struct ieee80211_conf *conf = &local->hw.conf;
572 572
573 if (local->ps_sdata) { 573 if (local->ps_sdata) {
574 ieee80211_enable_ps(local, local->ps_sdata); 574 ieee80211_enable_ps(local, local->ps_sdata);
575 } else if (conf->flags & IEEE80211_CONF_PS) { 575 } else if (conf->flags & IEEE80211_CONF_PS) {
576 conf->flags &= ~IEEE80211_CONF_PS; 576 conf->flags &= ~IEEE80211_CONF_PS;
577 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); 577 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
578 del_timer_sync(&local->dynamic_ps_timer); 578 del_timer_sync(&local->dynamic_ps_timer);
579 cancel_work_sync(&local->dynamic_ps_enable_work); 579 cancel_work_sync(&local->dynamic_ps_enable_work);
580 } 580 }
581 } 581 }
582 582
583 /* need to hold RTNL or interface lock */ 583 /* need to hold RTNL or interface lock */
584 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency) 584 void ieee80211_recalc_ps(struct ieee80211_local *local, s32 latency)
585 { 585 {
586 struct ieee80211_sub_if_data *sdata, *found = NULL; 586 struct ieee80211_sub_if_data *sdata, *found = NULL;
587 int count = 0; 587 int count = 0;
588 int timeout; 588 int timeout;
589 589
590 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) { 590 if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) {
591 local->ps_sdata = NULL; 591 local->ps_sdata = NULL;
592 return; 592 return;
593 } 593 }
594 594
595 if (!list_empty(&local->work_list)) { 595 if (!list_empty(&local->work_list)) {
596 local->ps_sdata = NULL; 596 local->ps_sdata = NULL;
597 goto change; 597 goto change;
598 } 598 }
599 599
600 list_for_each_entry(sdata, &local->interfaces, list) { 600 list_for_each_entry(sdata, &local->interfaces, list) {
601 if (!ieee80211_sdata_running(sdata)) 601 if (!ieee80211_sdata_running(sdata))
602 continue; 602 continue;
603 if (sdata->vif.type != NL80211_IFTYPE_STATION) 603 if (sdata->vif.type != NL80211_IFTYPE_STATION)
604 continue; 604 continue;
605 found = sdata; 605 found = sdata;
606 count++; 606 count++;
607 } 607 }
608 608
609 if (count == 1 && found->u.mgd.powersave && 609 if (count == 1 && found->u.mgd.powersave &&
610 found->u.mgd.associated && 610 found->u.mgd.associated &&
611 found->u.mgd.associated->beacon_ies && 611 found->u.mgd.associated->beacon_ies &&
612 !(found->u.mgd.flags & (IEEE80211_STA_BEACON_POLL | 612 !(found->u.mgd.flags & (IEEE80211_STA_BEACON_POLL |
613 IEEE80211_STA_CONNECTION_POLL))) { 613 IEEE80211_STA_CONNECTION_POLL))) {
614 struct ieee80211_conf *conf = &local->hw.conf; 614 struct ieee80211_conf *conf = &local->hw.conf;
615 s32 beaconint_us; 615 s32 beaconint_us;
616 616
617 if (latency < 0) 617 if (latency < 0)
618 latency = pm_qos_request(PM_QOS_NETWORK_LATENCY); 618 latency = pm_qos_request(PM_QOS_NETWORK_LATENCY);
619 619
620 beaconint_us = ieee80211_tu_to_usec( 620 beaconint_us = ieee80211_tu_to_usec(
621 found->vif.bss_conf.beacon_int); 621 found->vif.bss_conf.beacon_int);
622 622
623 timeout = local->dynamic_ps_forced_timeout; 623 timeout = local->dynamic_ps_forced_timeout;
624 if (timeout < 0) { 624 if (timeout < 0) {
625 /* 625 /*
626 * Go to full PSM if the user configures a very low 626 * Go to full PSM if the user configures a very low
627 * latency requirement. 627 * latency requirement.
628 * The 2000 second value is there for compatibility 628 * The 2000 second value is there for compatibility
629 * until the PM_QOS_NETWORK_LATENCY is configured 629 * until the PM_QOS_NETWORK_LATENCY is configured
630 * with real values. 630 * with real values.
631 */ 631 */
632 if (latency > (1900 * USEC_PER_MSEC) && 632 if (latency > (1900 * USEC_PER_MSEC) &&
633 latency != (2000 * USEC_PER_SEC)) 633 latency != (2000 * USEC_PER_SEC))
634 timeout = 0; 634 timeout = 0;
635 else 635 else
636 timeout = 100; 636 timeout = 100;
637 } 637 }
638 local->dynamic_ps_user_timeout = timeout; 638 local->dynamic_ps_user_timeout = timeout;
639 if (!local->disable_dynamic_ps) 639 if (!local->disable_dynamic_ps)
640 conf->dynamic_ps_timeout = 640 conf->dynamic_ps_timeout =
641 local->dynamic_ps_user_timeout; 641 local->dynamic_ps_user_timeout;
642 642
643 if (beaconint_us > latency) { 643 if (beaconint_us > latency) {
644 local->ps_sdata = NULL; 644 local->ps_sdata = NULL;
645 } else { 645 } else {
646 struct ieee80211_bss *bss; 646 struct ieee80211_bss *bss;
647 int maxslp = 1; 647 int maxslp = 1;
648 u8 dtimper; 648 u8 dtimper;
649 649
650 bss = (void *)found->u.mgd.associated->priv; 650 bss = (void *)found->u.mgd.associated->priv;
651 dtimper = bss->dtim_period; 651 dtimper = bss->dtim_period;
652 652
653 /* If the TIM IE is invalid, pretend the value is 1 */ 653 /* If the TIM IE is invalid, pretend the value is 1 */
654 if (!dtimper) 654 if (!dtimper)
655 dtimper = 1; 655 dtimper = 1;
656 else if (dtimper > 1) 656 else if (dtimper > 1)
657 maxslp = min_t(int, dtimper, 657 maxslp = min_t(int, dtimper,
658 latency / beaconint_us); 658 latency / beaconint_us);
659 659
660 local->hw.conf.max_sleep_period = maxslp; 660 local->hw.conf.max_sleep_period = maxslp;
661 local->hw.conf.ps_dtim_period = dtimper; 661 local->hw.conf.ps_dtim_period = dtimper;
662 local->ps_sdata = found; 662 local->ps_sdata = found;
663 } 663 }
664 } else { 664 } else {
665 local->ps_sdata = NULL; 665 local->ps_sdata = NULL;
666 } 666 }
667 667
668 change: 668 change:
669 ieee80211_change_ps(local); 669 ieee80211_change_ps(local);
670 } 670 }
671 671
672 void ieee80211_dynamic_ps_disable_work(struct work_struct *work) 672 void ieee80211_dynamic_ps_disable_work(struct work_struct *work)
673 { 673 {
674 struct ieee80211_local *local = 674 struct ieee80211_local *local =
675 container_of(work, struct ieee80211_local, 675 container_of(work, struct ieee80211_local,
676 dynamic_ps_disable_work); 676 dynamic_ps_disable_work);
677 677
678 if (local->hw.conf.flags & IEEE80211_CONF_PS) { 678 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
679 local->hw.conf.flags &= ~IEEE80211_CONF_PS; 679 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
680 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); 680 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
681 } 681 }
682 682
683 ieee80211_wake_queues_by_reason(&local->hw, 683 ieee80211_wake_queues_by_reason(&local->hw,
684 IEEE80211_QUEUE_STOP_REASON_PS); 684 IEEE80211_QUEUE_STOP_REASON_PS);
685 } 685 }
686 686
687 void ieee80211_dynamic_ps_enable_work(struct work_struct *work) 687 void ieee80211_dynamic_ps_enable_work(struct work_struct *work)
688 { 688 {
689 struct ieee80211_local *local = 689 struct ieee80211_local *local =
690 container_of(work, struct ieee80211_local, 690 container_of(work, struct ieee80211_local,
691 dynamic_ps_enable_work); 691 dynamic_ps_enable_work);
692 struct ieee80211_sub_if_data *sdata = local->ps_sdata; 692 struct ieee80211_sub_if_data *sdata = local->ps_sdata;
693 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 693 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
694 694
695 /* can only happen when PS was just disabled anyway */ 695 /* can only happen when PS was just disabled anyway */
696 if (!sdata) 696 if (!sdata)
697 return; 697 return;
698 698
699 if (local->hw.conf.flags & IEEE80211_CONF_PS) 699 if (local->hw.conf.flags & IEEE80211_CONF_PS)
700 return; 700 return;
701 701
702 if ((local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) && 702 if ((local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) &&
703 (!(ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED))) 703 (!(ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)))
704 ieee80211_send_nullfunc(local, sdata, 1); 704 ieee80211_send_nullfunc(local, sdata, 1);
705 705
706 if (!((local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) && 706 if (!((local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) &&
707 (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)) || 707 (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)) ||
708 (ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) { 708 (ifmgd->flags & IEEE80211_STA_NULLFUNC_ACKED)) {
709 ifmgd->flags &= ~IEEE80211_STA_NULLFUNC_ACKED; 709 ifmgd->flags &= ~IEEE80211_STA_NULLFUNC_ACKED;
710 local->hw.conf.flags |= IEEE80211_CONF_PS; 710 local->hw.conf.flags |= IEEE80211_CONF_PS;
711 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS); 711 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
712 } 712 }
713 } 713 }
714 714
715 void ieee80211_dynamic_ps_timer(unsigned long data) 715 void ieee80211_dynamic_ps_timer(unsigned long data)
716 { 716 {
717 struct ieee80211_local *local = (void *) data; 717 struct ieee80211_local *local = (void *) data;
718 718
719 if (local->quiescing || local->suspended) 719 if (local->quiescing || local->suspended)
720 return; 720 return;
721 721
722 ieee80211_queue_work(&local->hw, &local->dynamic_ps_enable_work); 722 ieee80211_queue_work(&local->hw, &local->dynamic_ps_enable_work);
723 } 723 }
724 724
725 /* MLME */ 725 /* MLME */
726 static void ieee80211_sta_wmm_params(struct ieee80211_local *local, 726 static void ieee80211_sta_wmm_params(struct ieee80211_local *local,
727 struct ieee80211_sub_if_data *sdata, 727 struct ieee80211_sub_if_data *sdata,
728 u8 *wmm_param, size_t wmm_param_len) 728 u8 *wmm_param, size_t wmm_param_len)
729 { 729 {
730 struct ieee80211_tx_queue_params params; 730 struct ieee80211_tx_queue_params params;
731 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 731 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
732 size_t left; 732 size_t left;
733 int count; 733 int count;
734 u8 *pos, uapsd_queues = 0; 734 u8 *pos, uapsd_queues = 0;
735 735
736 if (!local->ops->conf_tx) 736 if (!local->ops->conf_tx)
737 return; 737 return;
738 738
739 if (local->hw.queues < 4) 739 if (local->hw.queues < 4)
740 return; 740 return;
741 741
742 if (!wmm_param) 742 if (!wmm_param)
743 return; 743 return;
744 744
745 if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1) 745 if (wmm_param_len < 8 || wmm_param[5] /* version */ != 1)
746 return; 746 return;
747 747
748 if (ifmgd->flags & IEEE80211_STA_UAPSD_ENABLED) 748 if (ifmgd->flags & IEEE80211_STA_UAPSD_ENABLED)
749 uapsd_queues = local->uapsd_queues; 749 uapsd_queues = local->uapsd_queues;
750 750
751 count = wmm_param[6] & 0x0f; 751 count = wmm_param[6] & 0x0f;
752 if (count == ifmgd->wmm_last_param_set) 752 if (count == ifmgd->wmm_last_param_set)
753 return; 753 return;
754 ifmgd->wmm_last_param_set = count; 754 ifmgd->wmm_last_param_set = count;
755 755
756 pos = wmm_param + 8; 756 pos = wmm_param + 8;
757 left = wmm_param_len - 8; 757 left = wmm_param_len - 8;
758 758
759 memset(&params, 0, sizeof(params)); 759 memset(&params, 0, sizeof(params));
760 760
761 local->wmm_acm = 0; 761 local->wmm_acm = 0;
762 for (; left >= 4; left -= 4, pos += 4) { 762 for (; left >= 4; left -= 4, pos += 4) {
763 int aci = (pos[0] >> 5) & 0x03; 763 int aci = (pos[0] >> 5) & 0x03;
764 int acm = (pos[0] >> 4) & 0x01; 764 int acm = (pos[0] >> 4) & 0x01;
765 bool uapsd = false; 765 bool uapsd = false;
766 int queue; 766 int queue;
767 767
768 switch (aci) { 768 switch (aci) {
769 case 1: /* AC_BK */ 769 case 1: /* AC_BK */
770 queue = 3; 770 queue = 3;
771 if (acm) 771 if (acm)
772 local->wmm_acm |= BIT(1) | BIT(2); /* BK/- */ 772 local->wmm_acm |= BIT(1) | BIT(2); /* BK/- */
773 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK) 773 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK)
774 uapsd = true; 774 uapsd = true;
775 break; 775 break;
776 case 2: /* AC_VI */ 776 case 2: /* AC_VI */
777 queue = 1; 777 queue = 1;
778 if (acm) 778 if (acm)
779 local->wmm_acm |= BIT(4) | BIT(5); /* CL/VI */ 779 local->wmm_acm |= BIT(4) | BIT(5); /* CL/VI */
780 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI) 780 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI)
781 uapsd = true; 781 uapsd = true;
782 break; 782 break;
783 case 3: /* AC_VO */ 783 case 3: /* AC_VO */
784 queue = 0; 784 queue = 0;
785 if (acm) 785 if (acm)
786 local->wmm_acm |= BIT(6) | BIT(7); /* VO/NC */ 786 local->wmm_acm |= BIT(6) | BIT(7); /* VO/NC */
787 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO) 787 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO)
788 uapsd = true; 788 uapsd = true;
789 break; 789 break;
790 case 0: /* AC_BE */ 790 case 0: /* AC_BE */
791 default: 791 default:
792 queue = 2; 792 queue = 2;
793 if (acm) 793 if (acm)
794 local->wmm_acm |= BIT(0) | BIT(3); /* BE/EE */ 794 local->wmm_acm |= BIT(0) | BIT(3); /* BE/EE */
795 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE) 795 if (uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE)
796 uapsd = true; 796 uapsd = true;
797 break; 797 break;
798 } 798 }
799 799
800 params.aifs = pos[0] & 0x0f; 800 params.aifs = pos[0] & 0x0f;
801 params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4); 801 params.cw_max = ecw2cw((pos[1] & 0xf0) >> 4);
802 params.cw_min = ecw2cw(pos[1] & 0x0f); 802 params.cw_min = ecw2cw(pos[1] & 0x0f);
803 params.txop = get_unaligned_le16(pos + 2); 803 params.txop = get_unaligned_le16(pos + 2);
804 params.uapsd = uapsd; 804 params.uapsd = uapsd;
805 805
806 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG 806 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
807 wiphy_debug(local->hw.wiphy, 807 wiphy_debug(local->hw.wiphy,
808 "WMM queue=%d aci=%d acm=%d aifs=%d " 808 "WMM queue=%d aci=%d acm=%d aifs=%d "
809 "cWmin=%d cWmax=%d txop=%d uapsd=%d\n", 809 "cWmin=%d cWmax=%d txop=%d uapsd=%d\n",
810 queue, aci, acm, 810 queue, aci, acm,
811 params.aifs, params.cw_min, params.cw_max, 811 params.aifs, params.cw_min, params.cw_max,
812 params.txop, params.uapsd); 812 params.txop, params.uapsd);
813 #endif 813 #endif
814 if (drv_conf_tx(local, queue, &params)) 814 if (drv_conf_tx(local, queue, &params))
815 wiphy_debug(local->hw.wiphy, 815 wiphy_debug(local->hw.wiphy,
816 "failed to set TX queue parameters for queue %d\n", 816 "failed to set TX queue parameters for queue %d\n",
817 queue); 817 queue);
818 } 818 }
819 819
820 /* enable WMM or activate new settings */ 820 /* enable WMM or activate new settings */
821 sdata->vif.bss_conf.qos = true; 821 sdata->vif.bss_conf.qos = true;
822 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS); 822 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
823 } 823 }
824 824
825 static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata, 825 static u32 ieee80211_handle_bss_capability(struct ieee80211_sub_if_data *sdata,
826 u16 capab, bool erp_valid, u8 erp) 826 u16 capab, bool erp_valid, u8 erp)
827 { 827 {
828 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; 828 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
829 u32 changed = 0; 829 u32 changed = 0;
830 bool use_protection; 830 bool use_protection;
831 bool use_short_preamble; 831 bool use_short_preamble;
832 bool use_short_slot; 832 bool use_short_slot;
833 833
834 if (erp_valid) { 834 if (erp_valid) {
835 use_protection = (erp & WLAN_ERP_USE_PROTECTION) != 0; 835 use_protection = (erp & WLAN_ERP_USE_PROTECTION) != 0;
836 use_short_preamble = (erp & WLAN_ERP_BARKER_PREAMBLE) == 0; 836 use_short_preamble = (erp & WLAN_ERP_BARKER_PREAMBLE) == 0;
837 } else { 837 } else {
838 use_protection = false; 838 use_protection = false;
839 use_short_preamble = !!(capab & WLAN_CAPABILITY_SHORT_PREAMBLE); 839 use_short_preamble = !!(capab & WLAN_CAPABILITY_SHORT_PREAMBLE);
840 } 840 }
841 841
842 use_short_slot = !!(capab & WLAN_CAPABILITY_SHORT_SLOT_TIME); 842 use_short_slot = !!(capab & WLAN_CAPABILITY_SHORT_SLOT_TIME);
843 if (sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ) 843 if (sdata->local->hw.conf.channel->band == IEEE80211_BAND_5GHZ)
844 use_short_slot = true; 844 use_short_slot = true;
845 845
846 if (use_protection != bss_conf->use_cts_prot) { 846 if (use_protection != bss_conf->use_cts_prot) {
847 bss_conf->use_cts_prot = use_protection; 847 bss_conf->use_cts_prot = use_protection;
848 changed |= BSS_CHANGED_ERP_CTS_PROT; 848 changed |= BSS_CHANGED_ERP_CTS_PROT;
849 } 849 }
850 850
851 if (use_short_preamble != bss_conf->use_short_preamble) { 851 if (use_short_preamble != bss_conf->use_short_preamble) {
852 bss_conf->use_short_preamble = use_short_preamble; 852 bss_conf->use_short_preamble = use_short_preamble;
853 changed |= BSS_CHANGED_ERP_PREAMBLE; 853 changed |= BSS_CHANGED_ERP_PREAMBLE;
854 } 854 }
855 855
856 if (use_short_slot != bss_conf->use_short_slot) { 856 if (use_short_slot != bss_conf->use_short_slot) {
857 bss_conf->use_short_slot = use_short_slot; 857 bss_conf->use_short_slot = use_short_slot;
858 changed |= BSS_CHANGED_ERP_SLOT; 858 changed |= BSS_CHANGED_ERP_SLOT;
859 } 859 }
860 860
861 return changed; 861 return changed;
862 } 862 }
863 863
864 static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata, 864 static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
865 struct cfg80211_bss *cbss, 865 struct cfg80211_bss *cbss,
866 u32 bss_info_changed) 866 u32 bss_info_changed)
867 { 867 {
868 struct ieee80211_bss *bss = (void *)cbss->priv; 868 struct ieee80211_bss *bss = (void *)cbss->priv;
869 struct ieee80211_local *local = sdata->local; 869 struct ieee80211_local *local = sdata->local;
870 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; 870 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
871 871
872 bss_info_changed |= BSS_CHANGED_ASSOC; 872 bss_info_changed |= BSS_CHANGED_ASSOC;
873 /* set timing information */ 873 /* set timing information */
874 bss_conf->beacon_int = cbss->beacon_interval; 874 bss_conf->beacon_int = cbss->beacon_interval;
875 bss_conf->timestamp = cbss->tsf; 875 bss_conf->timestamp = cbss->tsf;
876 876
877 bss_info_changed |= BSS_CHANGED_BEACON_INT; 877 bss_info_changed |= BSS_CHANGED_BEACON_INT;
878 bss_info_changed |= ieee80211_handle_bss_capability(sdata, 878 bss_info_changed |= ieee80211_handle_bss_capability(sdata,
879 cbss->capability, bss->has_erp_value, bss->erp_value); 879 cbss->capability, bss->has_erp_value, bss->erp_value);
880 880
881 sdata->u.mgd.beacon_timeout = usecs_to_jiffies(ieee80211_tu_to_usec( 881 sdata->u.mgd.beacon_timeout = usecs_to_jiffies(ieee80211_tu_to_usec(
882 IEEE80211_BEACON_LOSS_COUNT * bss_conf->beacon_int)); 882 IEEE80211_BEACON_LOSS_COUNT * bss_conf->beacon_int));
883 883
884 sdata->u.mgd.associated = cbss; 884 sdata->u.mgd.associated = cbss;
885 memcpy(sdata->u.mgd.bssid, cbss->bssid, ETH_ALEN); 885 memcpy(sdata->u.mgd.bssid, cbss->bssid, ETH_ALEN);
886 886
887 sdata->u.mgd.flags |= IEEE80211_STA_RESET_SIGNAL_AVE; 887 sdata->u.mgd.flags |= IEEE80211_STA_RESET_SIGNAL_AVE;
888 888
889 /* just to be sure */ 889 /* just to be sure */
890 sdata->u.mgd.flags &= ~(IEEE80211_STA_CONNECTION_POLL | 890 sdata->u.mgd.flags &= ~(IEEE80211_STA_CONNECTION_POLL |
891 IEEE80211_STA_BEACON_POLL); 891 IEEE80211_STA_BEACON_POLL);
892 892
893 ieee80211_led_assoc(local, 1); 893 ieee80211_led_assoc(local, 1);
894 894
895 if (local->hw.flags & IEEE80211_HW_NEED_DTIM_PERIOD) 895 if (local->hw.flags & IEEE80211_HW_NEED_DTIM_PERIOD)
896 bss_conf->dtim_period = bss->dtim_period; 896 bss_conf->dtim_period = bss->dtim_period;
897 else 897 else
898 bss_conf->dtim_period = 0; 898 bss_conf->dtim_period = 0;
899 899
900 bss_conf->assoc = 1; 900 bss_conf->assoc = 1;
901 /* 901 /*
902 * For now just always ask the driver to update the basic rateset 902 * For now just always ask the driver to update the basic rateset
903 * when we have associated, we aren't checking whether it actually 903 * when we have associated, we aren't checking whether it actually
904 * changed or not. 904 * changed or not.
905 */ 905 */
906 bss_info_changed |= BSS_CHANGED_BASIC_RATES; 906 bss_info_changed |= BSS_CHANGED_BASIC_RATES;
907 907
908 /* And the BSSID changed - we're associated now */ 908 /* And the BSSID changed - we're associated now */
909 bss_info_changed |= BSS_CHANGED_BSSID; 909 bss_info_changed |= BSS_CHANGED_BSSID;
910 910
911 /* Tell the driver to monitor connection quality (if supported) */ 911 /* Tell the driver to monitor connection quality (if supported) */
912 if ((local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI) && 912 if ((local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI) &&
913 bss_conf->cqm_rssi_thold) 913 bss_conf->cqm_rssi_thold)
914 bss_info_changed |= BSS_CHANGED_CQM; 914 bss_info_changed |= BSS_CHANGED_CQM;
915 915
916 /* Enable ARP filtering */ 916 /* Enable ARP filtering */
917 if (bss_conf->arp_filter_enabled != sdata->arp_filter_state) { 917 if (bss_conf->arp_filter_enabled != sdata->arp_filter_state) {
918 bss_conf->arp_filter_enabled = sdata->arp_filter_state; 918 bss_conf->arp_filter_enabled = sdata->arp_filter_state;
919 bss_info_changed |= BSS_CHANGED_ARP_FILTER; 919 bss_info_changed |= BSS_CHANGED_ARP_FILTER;
920 } 920 }
921 921
922 ieee80211_bss_info_change_notify(sdata, bss_info_changed); 922 ieee80211_bss_info_change_notify(sdata, bss_info_changed);
923 923
924 mutex_lock(&local->iflist_mtx); 924 mutex_lock(&local->iflist_mtx);
925 ieee80211_recalc_ps(local, -1); 925 ieee80211_recalc_ps(local, -1);
926 ieee80211_recalc_smps(local); 926 ieee80211_recalc_smps(local);
927 mutex_unlock(&local->iflist_mtx); 927 mutex_unlock(&local->iflist_mtx);
928 928
929 netif_tx_start_all_queues(sdata->dev); 929 netif_tx_start_all_queues(sdata->dev);
930 netif_carrier_on(sdata->dev); 930 netif_carrier_on(sdata->dev);
931 } 931 }
932 932
933 static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata, 933 static void ieee80211_set_disassoc(struct ieee80211_sub_if_data *sdata,
934 bool remove_sta, bool tx) 934 bool remove_sta, bool tx)
935 { 935 {
936 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 936 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
937 struct ieee80211_local *local = sdata->local; 937 struct ieee80211_local *local = sdata->local;
938 struct sta_info *sta; 938 struct sta_info *sta;
939 u32 changed = 0, config_changed = 0; 939 u32 changed = 0, config_changed = 0;
940 u8 bssid[ETH_ALEN]; 940 u8 bssid[ETH_ALEN];
941 941
942 ASSERT_MGD_MTX(ifmgd); 942 ASSERT_MGD_MTX(ifmgd);
943 943
944 if (WARN_ON(!ifmgd->associated)) 944 if (WARN_ON(!ifmgd->associated))
945 return; 945 return;
946 946
947 memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN); 947 memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN);
948 948
949 ifmgd->associated = NULL; 949 ifmgd->associated = NULL;
950 memset(ifmgd->bssid, 0, ETH_ALEN); 950 memset(ifmgd->bssid, 0, ETH_ALEN);
951 951
952 /* 952 /*
953 * we need to commit the associated = NULL change because the 953 * we need to commit the associated = NULL change because the
954 * scan code uses that to determine whether this iface should 954 * scan code uses that to determine whether this iface should
955 * go to/wake up from powersave or not -- and could otherwise 955 * go to/wake up from powersave or not -- and could otherwise
956 * wake the queues erroneously. 956 * wake the queues erroneously.
957 */ 957 */
958 smp_mb(); 958 smp_mb();
959 959
960 /* 960 /*
961 * Thus, we can only afterwards stop the queues -- to account 961 * Thus, we can only afterwards stop the queues -- to account
962 * for the case where another CPU is finishing a scan at this 962 * for the case where another CPU is finishing a scan at this
963 * time -- we don't want the scan code to enable queues. 963 * time -- we don't want the scan code to enable queues.
964 */ 964 */
965 965
966 netif_tx_stop_all_queues(sdata->dev); 966 netif_tx_stop_all_queues(sdata->dev);
967 netif_carrier_off(sdata->dev); 967 netif_carrier_off(sdata->dev);
968 968
969 mutex_lock(&local->sta_mtx); 969 mutex_lock(&local->sta_mtx);
970 sta = sta_info_get(sdata, bssid); 970 sta = sta_info_get(sdata, bssid);
971 if (sta) { 971 if (sta) {
972 set_sta_flags(sta, WLAN_STA_BLOCK_BA); 972 set_sta_flags(sta, WLAN_STA_BLOCK_BA);
973 ieee80211_sta_tear_down_BA_sessions(sta, tx); 973 ieee80211_sta_tear_down_BA_sessions(sta, tx);
974 } 974 }
975 mutex_unlock(&local->sta_mtx); 975 mutex_unlock(&local->sta_mtx);
976 976
977 changed |= ieee80211_reset_erp_info(sdata); 977 changed |= ieee80211_reset_erp_info(sdata);
978 978
979 ieee80211_led_assoc(local, 0); 979 ieee80211_led_assoc(local, 0);
980 changed |= BSS_CHANGED_ASSOC; 980 changed |= BSS_CHANGED_ASSOC;
981 sdata->vif.bss_conf.assoc = false; 981 sdata->vif.bss_conf.assoc = false;
982 982
983 ieee80211_set_wmm_default(sdata); 983 ieee80211_set_wmm_default(sdata);
984 984
985 /* channel(_type) changes are handled by ieee80211_hw_config */ 985 /* channel(_type) changes are handled by ieee80211_hw_config */
986 WARN_ON(!ieee80211_set_channel_type(local, sdata, NL80211_CHAN_NO_HT)); 986 WARN_ON(!ieee80211_set_channel_type(local, sdata, NL80211_CHAN_NO_HT));
987 987
988 /* on the next assoc, re-program HT parameters */ 988 /* on the next assoc, re-program HT parameters */
989 sdata->ht_opmode_valid = false; 989 sdata->ht_opmode_valid = false;
990 990
991 local->power_constr_level = 0; 991 local->power_constr_level = 0;
992 992
993 del_timer_sync(&local->dynamic_ps_timer); 993 del_timer_sync(&local->dynamic_ps_timer);
994 cancel_work_sync(&local->dynamic_ps_enable_work); 994 cancel_work_sync(&local->dynamic_ps_enable_work);
995 995
996 if (local->hw.conf.flags & IEEE80211_CONF_PS) { 996 if (local->hw.conf.flags & IEEE80211_CONF_PS) {
997 local->hw.conf.flags &= ~IEEE80211_CONF_PS; 997 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
998 config_changed |= IEEE80211_CONF_CHANGE_PS; 998 config_changed |= IEEE80211_CONF_CHANGE_PS;
999 } 999 }
1000 1000
1001 ieee80211_hw_config(local, config_changed); 1001 ieee80211_hw_config(local, config_changed);
1002 1002
1003 /* Disable ARP filtering */ 1003 /* Disable ARP filtering */
1004 if (sdata->vif.bss_conf.arp_filter_enabled) { 1004 if (sdata->vif.bss_conf.arp_filter_enabled) {
1005 sdata->vif.bss_conf.arp_filter_enabled = false; 1005 sdata->vif.bss_conf.arp_filter_enabled = false;
1006 changed |= BSS_CHANGED_ARP_FILTER; 1006 changed |= BSS_CHANGED_ARP_FILTER;
1007 } 1007 }
1008 1008
1009 /* The BSSID (not really interesting) and HT changed */ 1009 /* The BSSID (not really interesting) and HT changed */
1010 changed |= BSS_CHANGED_BSSID | BSS_CHANGED_HT; 1010 changed |= BSS_CHANGED_BSSID | BSS_CHANGED_HT;
1011 ieee80211_bss_info_change_notify(sdata, changed); 1011 ieee80211_bss_info_change_notify(sdata, changed);
1012 1012
1013 if (remove_sta) 1013 if (remove_sta)
1014 sta_info_destroy_addr(sdata, bssid); 1014 sta_info_destroy_addr(sdata, bssid);
1015 1015
1016 del_timer_sync(&sdata->u.mgd.conn_mon_timer); 1016 del_timer_sync(&sdata->u.mgd.conn_mon_timer);
1017 del_timer_sync(&sdata->u.mgd.bcn_mon_timer); 1017 del_timer_sync(&sdata->u.mgd.bcn_mon_timer);
1018 del_timer_sync(&sdata->u.mgd.timer); 1018 del_timer_sync(&sdata->u.mgd.timer);
1019 del_timer_sync(&sdata->u.mgd.chswitch_timer); 1019 del_timer_sync(&sdata->u.mgd.chswitch_timer);
1020 } 1020 }
1021 1021
1022 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata, 1022 void ieee80211_sta_rx_notify(struct ieee80211_sub_if_data *sdata,
1023 struct ieee80211_hdr *hdr) 1023 struct ieee80211_hdr *hdr)
1024 { 1024 {
1025 /* 1025 /*
1026 * We can postpone the mgd.timer whenever receiving unicast frames 1026 * We can postpone the mgd.timer whenever receiving unicast frames
1027 * from AP because we know that the connection is working both ways 1027 * from AP because we know that the connection is working both ways
1028 * at that time. But multicast frames (and hence also beacons) must 1028 * at that time. But multicast frames (and hence also beacons) must
1029 * be ignored here, because we need to trigger the timer during 1029 * be ignored here, because we need to trigger the timer during
1030 * data idle periods for sending the periodic probe request to the 1030 * data idle periods for sending the periodic probe request to the
1031 * AP we're connected to. 1031 * AP we're connected to.
1032 */ 1032 */
1033 if (is_multicast_ether_addr(hdr->addr1)) 1033 if (is_multicast_ether_addr(hdr->addr1))
1034 return; 1034 return;
1035 1035
1036 /*
1037 * In case we receive frames after disassociation.
1038 */
1039 if (!sdata->u.mgd.associated)
1040 return;
1041
1036 ieee80211_sta_reset_conn_monitor(sdata); 1042 ieee80211_sta_reset_conn_monitor(sdata);
1037 } 1043 }
1038 1044
1039 static void ieee80211_reset_ap_probe(struct ieee80211_sub_if_data *sdata) 1045 static void ieee80211_reset_ap_probe(struct ieee80211_sub_if_data *sdata)
1040 { 1046 {
1041 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 1047 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1042 1048
1043 if (!(ifmgd->flags & (IEEE80211_STA_BEACON_POLL | 1049 if (!(ifmgd->flags & (IEEE80211_STA_BEACON_POLL |
1044 IEEE80211_STA_CONNECTION_POLL))) 1050 IEEE80211_STA_CONNECTION_POLL)))
1045 return; 1051 return;
1046 1052
1047 ifmgd->flags &= ~(IEEE80211_STA_CONNECTION_POLL | 1053 ifmgd->flags &= ~(IEEE80211_STA_CONNECTION_POLL |
1048 IEEE80211_STA_BEACON_POLL); 1054 IEEE80211_STA_BEACON_POLL);
1049 mutex_lock(&sdata->local->iflist_mtx); 1055 mutex_lock(&sdata->local->iflist_mtx);
1050 ieee80211_recalc_ps(sdata->local, -1); 1056 ieee80211_recalc_ps(sdata->local, -1);
1051 mutex_unlock(&sdata->local->iflist_mtx); 1057 mutex_unlock(&sdata->local->iflist_mtx);
1052 1058
1053 if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR) 1059 if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
1054 return; 1060 return;
1055 1061
1056 /* 1062 /*
1057 * We've received a probe response, but are not sure whether 1063 * We've received a probe response, but are not sure whether
1058 * we have or will be receiving any beacons or data, so let's 1064 * we have or will be receiving any beacons or data, so let's
1059 * schedule the timers again, just in case. 1065 * schedule the timers again, just in case.
1060 */ 1066 */
1061 ieee80211_sta_reset_beacon_monitor(sdata); 1067 ieee80211_sta_reset_beacon_monitor(sdata);
1062 1068
1063 mod_timer(&ifmgd->conn_mon_timer, 1069 mod_timer(&ifmgd->conn_mon_timer,
1064 round_jiffies_up(jiffies + 1070 round_jiffies_up(jiffies +
1065 IEEE80211_CONNECTION_IDLE_TIME)); 1071 IEEE80211_CONNECTION_IDLE_TIME));
1066 } 1072 }
1067 1073
1068 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata, 1074 void ieee80211_sta_tx_notify(struct ieee80211_sub_if_data *sdata,
1069 struct ieee80211_hdr *hdr, bool ack) 1075 struct ieee80211_hdr *hdr, bool ack)
1070 { 1076 {
1071 if (!ieee80211_is_data(hdr->frame_control)) 1077 if (!ieee80211_is_data(hdr->frame_control))
1072 return; 1078 return;
1073 1079
1074 if (ack) 1080 if (ack)
1075 ieee80211_sta_reset_conn_monitor(sdata); 1081 ieee80211_sta_reset_conn_monitor(sdata);
1076 1082
1077 if (ieee80211_is_nullfunc(hdr->frame_control) && 1083 if (ieee80211_is_nullfunc(hdr->frame_control) &&
1078 sdata->u.mgd.probe_send_count > 0) { 1084 sdata->u.mgd.probe_send_count > 0) {
1079 if (ack) 1085 if (ack)
1080 sdata->u.mgd.probe_send_count = 0; 1086 sdata->u.mgd.probe_send_count = 0;
1081 else 1087 else
1082 sdata->u.mgd.nullfunc_failed = true; 1088 sdata->u.mgd.nullfunc_failed = true;
1083 ieee80211_queue_work(&sdata->local->hw, &sdata->work); 1089 ieee80211_queue_work(&sdata->local->hw, &sdata->work);
1084 } 1090 }
1085 } 1091 }
1086 1092
1087 static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata) 1093 static void ieee80211_mgd_probe_ap_send(struct ieee80211_sub_if_data *sdata)
1088 { 1094 {
1089 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 1095 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1090 const u8 *ssid; 1096 const u8 *ssid;
1091 u8 *dst = ifmgd->associated->bssid; 1097 u8 *dst = ifmgd->associated->bssid;
1092 u8 unicast_limit = max(1, IEEE80211_MAX_PROBE_TRIES - 3); 1098 u8 unicast_limit = max(1, IEEE80211_MAX_PROBE_TRIES - 3);
1093 1099
1094 /* 1100 /*
1095 * Try sending broadcast probe requests for the last three 1101 * Try sending broadcast probe requests for the last three
1096 * probe requests after the first ones failed since some 1102 * probe requests after the first ones failed since some
1097 * buggy APs only support broadcast probe requests. 1103 * buggy APs only support broadcast probe requests.
1098 */ 1104 */
1099 if (ifmgd->probe_send_count >= unicast_limit) 1105 if (ifmgd->probe_send_count >= unicast_limit)
1100 dst = NULL; 1106 dst = NULL;
1101 1107
1102 /* 1108 /*
1103 * When the hardware reports an accurate Tx ACK status, it's 1109 * When the hardware reports an accurate Tx ACK status, it's
1104 * better to send a nullfunc frame instead of a probe request, 1110 * better to send a nullfunc frame instead of a probe request,
1105 * as it will kick us off the AP quickly if we aren't associated 1111 * as it will kick us off the AP quickly if we aren't associated
1106 * anymore. The timeout will be reset if the frame is ACKed by 1112 * anymore. The timeout will be reset if the frame is ACKed by
1107 * the AP. 1113 * the AP.
1108 */ 1114 */
1109 if (sdata->local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) { 1115 if (sdata->local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) {
1110 ifmgd->nullfunc_failed = false; 1116 ifmgd->nullfunc_failed = false;
1111 ieee80211_send_nullfunc(sdata->local, sdata, 0); 1117 ieee80211_send_nullfunc(sdata->local, sdata, 0);
1112 } else { 1118 } else {
1113 ssid = ieee80211_bss_get_ie(ifmgd->associated, WLAN_EID_SSID); 1119 ssid = ieee80211_bss_get_ie(ifmgd->associated, WLAN_EID_SSID);
1114 ieee80211_send_probe_req(sdata, dst, ssid + 2, ssid[1], NULL, 0); 1120 ieee80211_send_probe_req(sdata, dst, ssid + 2, ssid[1], NULL, 0);
1115 } 1121 }
1116 1122
1117 ifmgd->probe_send_count++; 1123 ifmgd->probe_send_count++;
1118 ifmgd->probe_timeout = jiffies + IEEE80211_PROBE_WAIT; 1124 ifmgd->probe_timeout = jiffies + IEEE80211_PROBE_WAIT;
1119 run_again(ifmgd, ifmgd->probe_timeout); 1125 run_again(ifmgd, ifmgd->probe_timeout);
1120 } 1126 }
1121 1127
1122 static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata, 1128 static void ieee80211_mgd_probe_ap(struct ieee80211_sub_if_data *sdata,
1123 bool beacon) 1129 bool beacon)
1124 { 1130 {
1125 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 1131 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1126 bool already = false; 1132 bool already = false;
1127 1133
1128 if (!ieee80211_sdata_running(sdata)) 1134 if (!ieee80211_sdata_running(sdata))
1129 return; 1135 return;
1130 1136
1131 if (sdata->local->scanning) 1137 if (sdata->local->scanning)
1132 return; 1138 return;
1133 1139
1134 if (sdata->local->tmp_channel) 1140 if (sdata->local->tmp_channel)
1135 return; 1141 return;
1136 1142
1137 mutex_lock(&ifmgd->mtx); 1143 mutex_lock(&ifmgd->mtx);
1138 1144
1139 if (!ifmgd->associated) 1145 if (!ifmgd->associated)
1140 goto out; 1146 goto out;
1141 1147
1142 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG 1148 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
1143 if (beacon && net_ratelimit()) 1149 if (beacon && net_ratelimit())
1144 printk(KERN_DEBUG "%s: detected beacon loss from AP " 1150 printk(KERN_DEBUG "%s: detected beacon loss from AP "
1145 "- sending probe request\n", sdata->name); 1151 "- sending probe request\n", sdata->name);
1146 #endif 1152 #endif
1147 1153
1148 /* 1154 /*
1149 * The driver/our work has already reported this event or the 1155 * The driver/our work has already reported this event or the
1150 * connection monitoring has kicked in and we have already sent 1156 * connection monitoring has kicked in and we have already sent
1151 * a probe request. Or maybe the AP died and the driver keeps 1157 * a probe request. Or maybe the AP died and the driver keeps
1152 * reporting until we disassociate... 1158 * reporting until we disassociate...
1153 * 1159 *
1154 * In either case we have to ignore the current call to this 1160 * In either case we have to ignore the current call to this
1155 * function (except for setting the correct probe reason bit) 1161 * function (except for setting the correct probe reason bit)
1156 * because otherwise we would reset the timer every time and 1162 * because otherwise we would reset the timer every time and
1157 * never check whether we received a probe response! 1163 * never check whether we received a probe response!
1158 */ 1164 */
1159 if (ifmgd->flags & (IEEE80211_STA_BEACON_POLL | 1165 if (ifmgd->flags & (IEEE80211_STA_BEACON_POLL |
1160 IEEE80211_STA_CONNECTION_POLL)) 1166 IEEE80211_STA_CONNECTION_POLL))
1161 already = true; 1167 already = true;
1162 1168
1163 if (beacon) 1169 if (beacon)
1164 ifmgd->flags |= IEEE80211_STA_BEACON_POLL; 1170 ifmgd->flags |= IEEE80211_STA_BEACON_POLL;
1165 else 1171 else
1166 ifmgd->flags |= IEEE80211_STA_CONNECTION_POLL; 1172 ifmgd->flags |= IEEE80211_STA_CONNECTION_POLL;
1167 1173
1168 if (already) 1174 if (already)
1169 goto out; 1175 goto out;
1170 1176
1171 mutex_lock(&sdata->local->iflist_mtx); 1177 mutex_lock(&sdata->local->iflist_mtx);
1172 ieee80211_recalc_ps(sdata->local, -1); 1178 ieee80211_recalc_ps(sdata->local, -1);
1173 mutex_unlock(&sdata->local->iflist_mtx); 1179 mutex_unlock(&sdata->local->iflist_mtx);
1174 1180
1175 ifmgd->probe_send_count = 0; 1181 ifmgd->probe_send_count = 0;
1176 ieee80211_mgd_probe_ap_send(sdata); 1182 ieee80211_mgd_probe_ap_send(sdata);
1177 out: 1183 out:
1178 mutex_unlock(&ifmgd->mtx); 1184 mutex_unlock(&ifmgd->mtx);
1179 } 1185 }
1180 1186
1181 struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw, 1187 struct sk_buff *ieee80211_ap_probereq_get(struct ieee80211_hw *hw,
1182 struct ieee80211_vif *vif) 1188 struct ieee80211_vif *vif)
1183 { 1189 {
1184 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 1190 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
1185 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 1191 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1186 struct sk_buff *skb; 1192 struct sk_buff *skb;
1187 const u8 *ssid; 1193 const u8 *ssid;
1188 1194
1189 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION)) 1195 if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
1190 return NULL; 1196 return NULL;
1191 1197
1192 ASSERT_MGD_MTX(ifmgd); 1198 ASSERT_MGD_MTX(ifmgd);
1193 1199
1194 if (!ifmgd->associated) 1200 if (!ifmgd->associated)
1195 return NULL; 1201 return NULL;
1196 1202
1197 ssid = ieee80211_bss_get_ie(ifmgd->associated, WLAN_EID_SSID); 1203 ssid = ieee80211_bss_get_ie(ifmgd->associated, WLAN_EID_SSID);
1198 skb = ieee80211_build_probe_req(sdata, ifmgd->associated->bssid, 1204 skb = ieee80211_build_probe_req(sdata, ifmgd->associated->bssid,
1199 ssid + 2, ssid[1], NULL, 0); 1205 ssid + 2, ssid[1], NULL, 0);
1200 1206
1201 return skb; 1207 return skb;
1202 } 1208 }
1203 EXPORT_SYMBOL(ieee80211_ap_probereq_get); 1209 EXPORT_SYMBOL(ieee80211_ap_probereq_get);
1204 1210
1205 static void __ieee80211_connection_loss(struct ieee80211_sub_if_data *sdata) 1211 static void __ieee80211_connection_loss(struct ieee80211_sub_if_data *sdata)
1206 { 1212 {
1207 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 1213 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1208 struct ieee80211_local *local = sdata->local; 1214 struct ieee80211_local *local = sdata->local;
1209 u8 bssid[ETH_ALEN]; 1215 u8 bssid[ETH_ALEN];
1210 1216
1211 mutex_lock(&ifmgd->mtx); 1217 mutex_lock(&ifmgd->mtx);
1212 if (!ifmgd->associated) { 1218 if (!ifmgd->associated) {
1213 mutex_unlock(&ifmgd->mtx); 1219 mutex_unlock(&ifmgd->mtx);
1214 return; 1220 return;
1215 } 1221 }
1216 1222
1217 memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN); 1223 memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN);
1218 1224
1219 printk(KERN_DEBUG "Connection to AP %pM lost.\n", bssid); 1225 printk(KERN_DEBUG "Connection to AP %pM lost.\n", bssid);
1220 1226
1221 ieee80211_set_disassoc(sdata, true, true); 1227 ieee80211_set_disassoc(sdata, true, true);
1222 mutex_unlock(&ifmgd->mtx); 1228 mutex_unlock(&ifmgd->mtx);
1223 1229
1224 mutex_lock(&local->mtx); 1230 mutex_lock(&local->mtx);
1225 ieee80211_recalc_idle(local); 1231 ieee80211_recalc_idle(local);
1226 mutex_unlock(&local->mtx); 1232 mutex_unlock(&local->mtx);
1227 /* 1233 /*
1228 * must be outside lock due to cfg80211, 1234 * must be outside lock due to cfg80211,
1229 * but that's not a problem. 1235 * but that's not a problem.
1230 */ 1236 */
1231 ieee80211_send_deauth_disassoc(sdata, bssid, 1237 ieee80211_send_deauth_disassoc(sdata, bssid,
1232 IEEE80211_STYPE_DEAUTH, 1238 IEEE80211_STYPE_DEAUTH,
1233 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, 1239 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
1234 NULL, true); 1240 NULL, true);
1235 } 1241 }
1236 1242
1237 void ieee80211_beacon_connection_loss_work(struct work_struct *work) 1243 void ieee80211_beacon_connection_loss_work(struct work_struct *work)
1238 { 1244 {
1239 struct ieee80211_sub_if_data *sdata = 1245 struct ieee80211_sub_if_data *sdata =
1240 container_of(work, struct ieee80211_sub_if_data, 1246 container_of(work, struct ieee80211_sub_if_data,
1241 u.mgd.beacon_connection_loss_work); 1247 u.mgd.beacon_connection_loss_work);
1242 1248
1243 if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR) 1249 if (sdata->local->hw.flags & IEEE80211_HW_CONNECTION_MONITOR)
1244 __ieee80211_connection_loss(sdata); 1250 __ieee80211_connection_loss(sdata);
1245 else 1251 else
1246 ieee80211_mgd_probe_ap(sdata, true); 1252 ieee80211_mgd_probe_ap(sdata, true);
1247 } 1253 }
1248 1254
1249 void ieee80211_beacon_loss(struct ieee80211_vif *vif) 1255 void ieee80211_beacon_loss(struct ieee80211_vif *vif)
1250 { 1256 {
1251 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 1257 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
1252 struct ieee80211_hw *hw = &sdata->local->hw; 1258 struct ieee80211_hw *hw = &sdata->local->hw;
1253 1259
1254 trace_api_beacon_loss(sdata); 1260 trace_api_beacon_loss(sdata);
1255 1261
1256 WARN_ON(hw->flags & IEEE80211_HW_CONNECTION_MONITOR); 1262 WARN_ON(hw->flags & IEEE80211_HW_CONNECTION_MONITOR);
1257 ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work); 1263 ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work);
1258 } 1264 }
1259 EXPORT_SYMBOL(ieee80211_beacon_loss); 1265 EXPORT_SYMBOL(ieee80211_beacon_loss);
1260 1266
1261 void ieee80211_connection_loss(struct ieee80211_vif *vif) 1267 void ieee80211_connection_loss(struct ieee80211_vif *vif)
1262 { 1268 {
1263 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 1269 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
1264 struct ieee80211_hw *hw = &sdata->local->hw; 1270 struct ieee80211_hw *hw = &sdata->local->hw;
1265 1271
1266 trace_api_connection_loss(sdata); 1272 trace_api_connection_loss(sdata);
1267 1273
1268 WARN_ON(!(hw->flags & IEEE80211_HW_CONNECTION_MONITOR)); 1274 WARN_ON(!(hw->flags & IEEE80211_HW_CONNECTION_MONITOR));
1269 ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work); 1275 ieee80211_queue_work(hw, &sdata->u.mgd.beacon_connection_loss_work);
1270 } 1276 }
1271 EXPORT_SYMBOL(ieee80211_connection_loss); 1277 EXPORT_SYMBOL(ieee80211_connection_loss);
1272 1278
1273 1279
1274 static enum rx_mgmt_action __must_check 1280 static enum rx_mgmt_action __must_check
1275 ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata, 1281 ieee80211_rx_mgmt_deauth(struct ieee80211_sub_if_data *sdata,
1276 struct ieee80211_mgmt *mgmt, size_t len) 1282 struct ieee80211_mgmt *mgmt, size_t len)
1277 { 1283 {
1278 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 1284 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1279 const u8 *bssid = NULL; 1285 const u8 *bssid = NULL;
1280 u16 reason_code; 1286 u16 reason_code;
1281 1287
1282 if (len < 24 + 2) 1288 if (len < 24 + 2)
1283 return RX_MGMT_NONE; 1289 return RX_MGMT_NONE;
1284 1290
1285 ASSERT_MGD_MTX(ifmgd); 1291 ASSERT_MGD_MTX(ifmgd);
1286 1292
1287 bssid = ifmgd->associated->bssid; 1293 bssid = ifmgd->associated->bssid;
1288 1294
1289 reason_code = le16_to_cpu(mgmt->u.deauth.reason_code); 1295 reason_code = le16_to_cpu(mgmt->u.deauth.reason_code);
1290 1296
1291 printk(KERN_DEBUG "%s: deauthenticated from %pM (Reason: %u)\n", 1297 printk(KERN_DEBUG "%s: deauthenticated from %pM (Reason: %u)\n",
1292 sdata->name, bssid, reason_code); 1298 sdata->name, bssid, reason_code);
1293 1299
1294 ieee80211_set_disassoc(sdata, true, false); 1300 ieee80211_set_disassoc(sdata, true, false);
1295 mutex_lock(&sdata->local->mtx); 1301 mutex_lock(&sdata->local->mtx);
1296 ieee80211_recalc_idle(sdata->local); 1302 ieee80211_recalc_idle(sdata->local);
1297 mutex_unlock(&sdata->local->mtx); 1303 mutex_unlock(&sdata->local->mtx);
1298 1304
1299 return RX_MGMT_CFG80211_DEAUTH; 1305 return RX_MGMT_CFG80211_DEAUTH;
1300 } 1306 }
1301 1307
1302 1308
1303 static enum rx_mgmt_action __must_check 1309 static enum rx_mgmt_action __must_check
1304 ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata, 1310 ieee80211_rx_mgmt_disassoc(struct ieee80211_sub_if_data *sdata,
1305 struct ieee80211_mgmt *mgmt, size_t len) 1311 struct ieee80211_mgmt *mgmt, size_t len)
1306 { 1312 {
1307 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 1313 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1308 u16 reason_code; 1314 u16 reason_code;
1309 1315
1310 if (len < 24 + 2) 1316 if (len < 24 + 2)
1311 return RX_MGMT_NONE; 1317 return RX_MGMT_NONE;
1312 1318
1313 ASSERT_MGD_MTX(ifmgd); 1319 ASSERT_MGD_MTX(ifmgd);
1314 1320
1315 if (WARN_ON(!ifmgd->associated)) 1321 if (WARN_ON(!ifmgd->associated))
1316 return RX_MGMT_NONE; 1322 return RX_MGMT_NONE;
1317 1323
1318 if (WARN_ON(memcmp(ifmgd->associated->bssid, mgmt->sa, ETH_ALEN))) 1324 if (WARN_ON(memcmp(ifmgd->associated->bssid, mgmt->sa, ETH_ALEN)))
1319 return RX_MGMT_NONE; 1325 return RX_MGMT_NONE;
1320 1326
1321 reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code); 1327 reason_code = le16_to_cpu(mgmt->u.disassoc.reason_code);
1322 1328
1323 printk(KERN_DEBUG "%s: disassociated from %pM (Reason: %u)\n", 1329 printk(KERN_DEBUG "%s: disassociated from %pM (Reason: %u)\n",
1324 sdata->name, mgmt->sa, reason_code); 1330 sdata->name, mgmt->sa, reason_code);
1325 1331
1326 ieee80211_set_disassoc(sdata, true, false); 1332 ieee80211_set_disassoc(sdata, true, false);
1327 mutex_lock(&sdata->local->mtx); 1333 mutex_lock(&sdata->local->mtx);
1328 ieee80211_recalc_idle(sdata->local); 1334 ieee80211_recalc_idle(sdata->local);
1329 mutex_unlock(&sdata->local->mtx); 1335 mutex_unlock(&sdata->local->mtx);
1330 return RX_MGMT_CFG80211_DISASSOC; 1336 return RX_MGMT_CFG80211_DISASSOC;
1331 } 1337 }
1332 1338
1333 1339
1334 static bool ieee80211_assoc_success(struct ieee80211_work *wk, 1340 static bool ieee80211_assoc_success(struct ieee80211_work *wk,
1335 struct ieee80211_mgmt *mgmt, size_t len) 1341 struct ieee80211_mgmt *mgmt, size_t len)
1336 { 1342 {
1337 struct ieee80211_sub_if_data *sdata = wk->sdata; 1343 struct ieee80211_sub_if_data *sdata = wk->sdata;
1338 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 1344 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1339 struct ieee80211_local *local = sdata->local; 1345 struct ieee80211_local *local = sdata->local;
1340 struct ieee80211_supported_band *sband; 1346 struct ieee80211_supported_band *sband;
1341 struct sta_info *sta; 1347 struct sta_info *sta;
1342 struct cfg80211_bss *cbss = wk->assoc.bss; 1348 struct cfg80211_bss *cbss = wk->assoc.bss;
1343 u8 *pos; 1349 u8 *pos;
1344 u32 rates, basic_rates; 1350 u32 rates, basic_rates;
1345 u16 capab_info, aid; 1351 u16 capab_info, aid;
1346 struct ieee802_11_elems elems; 1352 struct ieee802_11_elems elems;
1347 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; 1353 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
1348 u32 changed = 0; 1354 u32 changed = 0;
1349 int i, j, err; 1355 int i, j, err;
1350 bool have_higher_than_11mbit = false; 1356 bool have_higher_than_11mbit = false;
1351 u16 ap_ht_cap_flags; 1357 u16 ap_ht_cap_flags;
1352 1358
1353 /* AssocResp and ReassocResp have identical structure */ 1359 /* AssocResp and ReassocResp have identical structure */
1354 1360
1355 aid = le16_to_cpu(mgmt->u.assoc_resp.aid); 1361 aid = le16_to_cpu(mgmt->u.assoc_resp.aid);
1356 capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info); 1362 capab_info = le16_to_cpu(mgmt->u.assoc_resp.capab_info);
1357 1363
1358 if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14))) 1364 if ((aid & (BIT(15) | BIT(14))) != (BIT(15) | BIT(14)))
1359 printk(KERN_DEBUG "%s: invalid aid value %d; bits 15:14 not " 1365 printk(KERN_DEBUG "%s: invalid aid value %d; bits 15:14 not "
1360 "set\n", sdata->name, aid); 1366 "set\n", sdata->name, aid);
1361 aid &= ~(BIT(15) | BIT(14)); 1367 aid &= ~(BIT(15) | BIT(14));
1362 1368
1363 pos = mgmt->u.assoc_resp.variable; 1369 pos = mgmt->u.assoc_resp.variable;
1364 ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems); 1370 ieee802_11_parse_elems(pos, len - (pos - (u8 *) mgmt), &elems);
1365 1371
1366 if (!elems.supp_rates) { 1372 if (!elems.supp_rates) {
1367 printk(KERN_DEBUG "%s: no SuppRates element in AssocResp\n", 1373 printk(KERN_DEBUG "%s: no SuppRates element in AssocResp\n",
1368 sdata->name); 1374 sdata->name);
1369 return false; 1375 return false;
1370 } 1376 }
1371 1377
1372 ifmgd->aid = aid; 1378 ifmgd->aid = aid;
1373 1379
1374 sta = sta_info_alloc(sdata, cbss->bssid, GFP_KERNEL); 1380 sta = sta_info_alloc(sdata, cbss->bssid, GFP_KERNEL);
1375 if (!sta) { 1381 if (!sta) {
1376 printk(KERN_DEBUG "%s: failed to alloc STA entry for" 1382 printk(KERN_DEBUG "%s: failed to alloc STA entry for"
1377 " the AP\n", sdata->name); 1383 " the AP\n", sdata->name);
1378 return false; 1384 return false;
1379 } 1385 }
1380 1386
1381 set_sta_flags(sta, WLAN_STA_AUTH | WLAN_STA_ASSOC | 1387 set_sta_flags(sta, WLAN_STA_AUTH | WLAN_STA_ASSOC |
1382 WLAN_STA_ASSOC_AP); 1388 WLAN_STA_ASSOC_AP);
1383 if (!(ifmgd->flags & IEEE80211_STA_CONTROL_PORT)) 1389 if (!(ifmgd->flags & IEEE80211_STA_CONTROL_PORT))
1384 set_sta_flags(sta, WLAN_STA_AUTHORIZED); 1390 set_sta_flags(sta, WLAN_STA_AUTHORIZED);
1385 1391
1386 rates = 0; 1392 rates = 0;
1387 basic_rates = 0; 1393 basic_rates = 0;
1388 sband = local->hw.wiphy->bands[wk->chan->band]; 1394 sband = local->hw.wiphy->bands[wk->chan->band];
1389 1395
1390 for (i = 0; i < elems.supp_rates_len; i++) { 1396 for (i = 0; i < elems.supp_rates_len; i++) {
1391 int rate = (elems.supp_rates[i] & 0x7f) * 5; 1397 int rate = (elems.supp_rates[i] & 0x7f) * 5;
1392 bool is_basic = !!(elems.supp_rates[i] & 0x80); 1398 bool is_basic = !!(elems.supp_rates[i] & 0x80);
1393 1399
1394 if (rate > 110) 1400 if (rate > 110)
1395 have_higher_than_11mbit = true; 1401 have_higher_than_11mbit = true;
1396 1402
1397 for (j = 0; j < sband->n_bitrates; j++) { 1403 for (j = 0; j < sband->n_bitrates; j++) {
1398 if (sband->bitrates[j].bitrate == rate) { 1404 if (sband->bitrates[j].bitrate == rate) {
1399 rates |= BIT(j); 1405 rates |= BIT(j);
1400 if (is_basic) 1406 if (is_basic)
1401 basic_rates |= BIT(j); 1407 basic_rates |= BIT(j);
1402 break; 1408 break;
1403 } 1409 }
1404 } 1410 }
1405 } 1411 }
1406 1412
1407 for (i = 0; i < elems.ext_supp_rates_len; i++) { 1413 for (i = 0; i < elems.ext_supp_rates_len; i++) {
1408 int rate = (elems.ext_supp_rates[i] & 0x7f) * 5; 1414 int rate = (elems.ext_supp_rates[i] & 0x7f) * 5;
1409 bool is_basic = !!(elems.ext_supp_rates[i] & 0x80); 1415 bool is_basic = !!(elems.ext_supp_rates[i] & 0x80);
1410 1416
1411 if (rate > 110) 1417 if (rate > 110)
1412 have_higher_than_11mbit = true; 1418 have_higher_than_11mbit = true;
1413 1419
1414 for (j = 0; j < sband->n_bitrates; j++) { 1420 for (j = 0; j < sband->n_bitrates; j++) {
1415 if (sband->bitrates[j].bitrate == rate) { 1421 if (sband->bitrates[j].bitrate == rate) {
1416 rates |= BIT(j); 1422 rates |= BIT(j);
1417 if (is_basic) 1423 if (is_basic)
1418 basic_rates |= BIT(j); 1424 basic_rates |= BIT(j);
1419 break; 1425 break;
1420 } 1426 }
1421 } 1427 }
1422 } 1428 }
1423 1429
1424 sta->sta.supp_rates[wk->chan->band] = rates; 1430 sta->sta.supp_rates[wk->chan->band] = rates;
1425 sdata->vif.bss_conf.basic_rates = basic_rates; 1431 sdata->vif.bss_conf.basic_rates = basic_rates;
1426 1432
1427 /* cf. IEEE 802.11 9.2.12 */ 1433 /* cf. IEEE 802.11 9.2.12 */
1428 if (wk->chan->band == IEEE80211_BAND_2GHZ && 1434 if (wk->chan->band == IEEE80211_BAND_2GHZ &&
1429 have_higher_than_11mbit) 1435 have_higher_than_11mbit)
1430 sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE; 1436 sdata->flags |= IEEE80211_SDATA_OPERATING_GMODE;
1431 else 1437 else
1432 sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE; 1438 sdata->flags &= ~IEEE80211_SDATA_OPERATING_GMODE;
1433 1439
1434 if (elems.ht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_11N)) 1440 if (elems.ht_cap_elem && !(ifmgd->flags & IEEE80211_STA_DISABLE_11N))
1435 ieee80211_ht_cap_ie_to_sta_ht_cap(sband, 1441 ieee80211_ht_cap_ie_to_sta_ht_cap(sband,
1436 elems.ht_cap_elem, &sta->sta.ht_cap); 1442 elems.ht_cap_elem, &sta->sta.ht_cap);
1437 1443
1438 ap_ht_cap_flags = sta->sta.ht_cap.cap; 1444 ap_ht_cap_flags = sta->sta.ht_cap.cap;
1439 1445
1440 rate_control_rate_init(sta); 1446 rate_control_rate_init(sta);
1441 1447
1442 if (ifmgd->flags & IEEE80211_STA_MFP_ENABLED) 1448 if (ifmgd->flags & IEEE80211_STA_MFP_ENABLED)
1443 set_sta_flags(sta, WLAN_STA_MFP); 1449 set_sta_flags(sta, WLAN_STA_MFP);
1444 1450
1445 if (elems.wmm_param) 1451 if (elems.wmm_param)
1446 set_sta_flags(sta, WLAN_STA_WME); 1452 set_sta_flags(sta, WLAN_STA_WME);
1447 1453
1448 err = sta_info_insert(sta); 1454 err = sta_info_insert(sta);
1449 sta = NULL; 1455 sta = NULL;
1450 if (err) { 1456 if (err) {
1451 printk(KERN_DEBUG "%s: failed to insert STA entry for" 1457 printk(KERN_DEBUG "%s: failed to insert STA entry for"
1452 " the AP (error %d)\n", sdata->name, err); 1458 " the AP (error %d)\n", sdata->name, err);
1453 return false; 1459 return false;
1454 } 1460 }
1455 1461
1456 /* 1462 /*
1457 * Always handle WMM once after association regardless 1463 * Always handle WMM once after association regardless
1458 * of the first value the AP uses. Setting -1 here has 1464 * of the first value the AP uses. Setting -1 here has
1459 * that effect because the AP values is an unsigned 1465 * that effect because the AP values is an unsigned
1460 * 4-bit value. 1466 * 4-bit value.
1461 */ 1467 */
1462 ifmgd->wmm_last_param_set = -1; 1468 ifmgd->wmm_last_param_set = -1;
1463 1469
1464 if (elems.wmm_param) 1470 if (elems.wmm_param)
1465 ieee80211_sta_wmm_params(local, sdata, elems.wmm_param, 1471 ieee80211_sta_wmm_params(local, sdata, elems.wmm_param,
1466 elems.wmm_param_len); 1472 elems.wmm_param_len);
1467 else 1473 else
1468 ieee80211_set_wmm_default(sdata); 1474 ieee80211_set_wmm_default(sdata);
1469 1475
1470 local->oper_channel = wk->chan; 1476 local->oper_channel = wk->chan;
1471 1477
1472 if (elems.ht_info_elem && elems.wmm_param && 1478 if (elems.ht_info_elem && elems.wmm_param &&
1473 (sdata->local->hw.queues >= 4) && 1479 (sdata->local->hw.queues >= 4) &&
1474 !(ifmgd->flags & IEEE80211_STA_DISABLE_11N)) 1480 !(ifmgd->flags & IEEE80211_STA_DISABLE_11N))
1475 changed |= ieee80211_enable_ht(sdata, elems.ht_info_elem, 1481 changed |= ieee80211_enable_ht(sdata, elems.ht_info_elem,
1476 cbss->bssid, ap_ht_cap_flags); 1482 cbss->bssid, ap_ht_cap_flags);
1477 1483
1478 /* set AID and assoc capability, 1484 /* set AID and assoc capability,
1479 * ieee80211_set_associated() will tell the driver */ 1485 * ieee80211_set_associated() will tell the driver */
1480 bss_conf->aid = aid; 1486 bss_conf->aid = aid;
1481 bss_conf->assoc_capability = capab_info; 1487 bss_conf->assoc_capability = capab_info;
1482 ieee80211_set_associated(sdata, cbss, changed); 1488 ieee80211_set_associated(sdata, cbss, changed);
1483 1489
1484 /* 1490 /*
1485 * If we're using 4-addr mode, let the AP know that we're 1491 * If we're using 4-addr mode, let the AP know that we're
1486 * doing so, so that it can create the STA VLAN on its side 1492 * doing so, so that it can create the STA VLAN on its side
1487 */ 1493 */
1488 if (ifmgd->use_4addr) 1494 if (ifmgd->use_4addr)
1489 ieee80211_send_4addr_nullfunc(local, sdata); 1495 ieee80211_send_4addr_nullfunc(local, sdata);
1490 1496
1491 /* 1497 /*
1492 * Start timer to probe the connection to the AP now. 1498 * Start timer to probe the connection to the AP now.
1493 * Also start the timer that will detect beacon loss. 1499 * Also start the timer that will detect beacon loss.
1494 */ 1500 */
1495 ieee80211_sta_rx_notify(sdata, (struct ieee80211_hdr *)mgmt); 1501 ieee80211_sta_rx_notify(sdata, (struct ieee80211_hdr *)mgmt);
1496 ieee80211_sta_reset_beacon_monitor(sdata); 1502 ieee80211_sta_reset_beacon_monitor(sdata);
1497 1503
1498 return true; 1504 return true;
1499 } 1505 }
1500 1506
1501 1507
1502 static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata, 1508 static void ieee80211_rx_bss_info(struct ieee80211_sub_if_data *sdata,
1503 struct ieee80211_mgmt *mgmt, 1509 struct ieee80211_mgmt *mgmt,
1504 size_t len, 1510 size_t len,
1505 struct ieee80211_rx_status *rx_status, 1511 struct ieee80211_rx_status *rx_status,
1506 struct ieee802_11_elems *elems, 1512 struct ieee802_11_elems *elems,
1507 bool beacon) 1513 bool beacon)
1508 { 1514 {
1509 struct ieee80211_local *local = sdata->local; 1515 struct ieee80211_local *local = sdata->local;
1510 int freq; 1516 int freq;
1511 struct ieee80211_bss *bss; 1517 struct ieee80211_bss *bss;
1512 struct ieee80211_channel *channel; 1518 struct ieee80211_channel *channel;
1513 bool need_ps = false; 1519 bool need_ps = false;
1514 1520
1515 if (sdata->u.mgd.associated) { 1521 if (sdata->u.mgd.associated) {
1516 bss = (void *)sdata->u.mgd.associated->priv; 1522 bss = (void *)sdata->u.mgd.associated->priv;
1517 /* not previously set so we may need to recalc */ 1523 /* not previously set so we may need to recalc */
1518 need_ps = !bss->dtim_period; 1524 need_ps = !bss->dtim_period;
1519 } 1525 }
1520 1526
1521 if (elems->ds_params && elems->ds_params_len == 1) 1527 if (elems->ds_params && elems->ds_params_len == 1)
1522 freq = ieee80211_channel_to_frequency(elems->ds_params[0]); 1528 freq = ieee80211_channel_to_frequency(elems->ds_params[0]);
1523 else 1529 else
1524 freq = rx_status->freq; 1530 freq = rx_status->freq;
1525 1531
1526 channel = ieee80211_get_channel(local->hw.wiphy, freq); 1532 channel = ieee80211_get_channel(local->hw.wiphy, freq);
1527 1533
1528 if (!channel || channel->flags & IEEE80211_CHAN_DISABLED) 1534 if (!channel || channel->flags & IEEE80211_CHAN_DISABLED)
1529 return; 1535 return;
1530 1536
1531 bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems, 1537 bss = ieee80211_bss_info_update(local, rx_status, mgmt, len, elems,
1532 channel, beacon); 1538 channel, beacon);
1533 if (bss) 1539 if (bss)
1534 ieee80211_rx_bss_put(local, bss); 1540 ieee80211_rx_bss_put(local, bss);
1535 1541
1536 if (!sdata->u.mgd.associated) 1542 if (!sdata->u.mgd.associated)
1537 return; 1543 return;
1538 1544
1539 if (need_ps) { 1545 if (need_ps) {
1540 mutex_lock(&local->iflist_mtx); 1546 mutex_lock(&local->iflist_mtx);
1541 ieee80211_recalc_ps(local, -1); 1547 ieee80211_recalc_ps(local, -1);
1542 mutex_unlock(&local->iflist_mtx); 1548 mutex_unlock(&local->iflist_mtx);
1543 } 1549 }
1544 1550
1545 if (elems->ch_switch_elem && (elems->ch_switch_elem_len == 3) && 1551 if (elems->ch_switch_elem && (elems->ch_switch_elem_len == 3) &&
1546 (memcmp(mgmt->bssid, sdata->u.mgd.associated->bssid, 1552 (memcmp(mgmt->bssid, sdata->u.mgd.associated->bssid,
1547 ETH_ALEN) == 0)) { 1553 ETH_ALEN) == 0)) {
1548 struct ieee80211_channel_sw_ie *sw_elem = 1554 struct ieee80211_channel_sw_ie *sw_elem =
1549 (struct ieee80211_channel_sw_ie *)elems->ch_switch_elem; 1555 (struct ieee80211_channel_sw_ie *)elems->ch_switch_elem;
1550 ieee80211_sta_process_chanswitch(sdata, sw_elem, 1556 ieee80211_sta_process_chanswitch(sdata, sw_elem,
1551 bss, rx_status->mactime); 1557 bss, rx_status->mactime);
1552 } 1558 }
1553 } 1559 }
1554 1560
1555 1561
1556 static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata, 1562 static void ieee80211_rx_mgmt_probe_resp(struct ieee80211_sub_if_data *sdata,
1557 struct sk_buff *skb) 1563 struct sk_buff *skb)
1558 { 1564 {
1559 struct ieee80211_mgmt *mgmt = (void *)skb->data; 1565 struct ieee80211_mgmt *mgmt = (void *)skb->data;
1560 struct ieee80211_if_managed *ifmgd; 1566 struct ieee80211_if_managed *ifmgd;
1561 struct ieee80211_rx_status *rx_status = (void *) skb->cb; 1567 struct ieee80211_rx_status *rx_status = (void *) skb->cb;
1562 size_t baselen, len = skb->len; 1568 size_t baselen, len = skb->len;
1563 struct ieee802_11_elems elems; 1569 struct ieee802_11_elems elems;
1564 1570
1565 ifmgd = &sdata->u.mgd; 1571 ifmgd = &sdata->u.mgd;
1566 1572
1567 ASSERT_MGD_MTX(ifmgd); 1573 ASSERT_MGD_MTX(ifmgd);
1568 1574
1569 if (memcmp(mgmt->da, sdata->vif.addr, ETH_ALEN)) 1575 if (memcmp(mgmt->da, sdata->vif.addr, ETH_ALEN))
1570 return; /* ignore ProbeResp to foreign address */ 1576 return; /* ignore ProbeResp to foreign address */
1571 1577
1572 baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt; 1578 baselen = (u8 *) mgmt->u.probe_resp.variable - (u8 *) mgmt;
1573 if (baselen > len) 1579 if (baselen > len)
1574 return; 1580 return;
1575 1581
1576 ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen, 1582 ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - baselen,
1577 &elems); 1583 &elems);
1578 1584
1579 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, false); 1585 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, false);
1580 1586
1581 if (ifmgd->associated && 1587 if (ifmgd->associated &&
1582 memcmp(mgmt->bssid, ifmgd->associated->bssid, ETH_ALEN) == 0) 1588 memcmp(mgmt->bssid, ifmgd->associated->bssid, ETH_ALEN) == 0)
1583 ieee80211_reset_ap_probe(sdata); 1589 ieee80211_reset_ap_probe(sdata);
1584 } 1590 }
1585 1591
1586 /* 1592 /*
1587 * This is the canonical list of information elements we care about, 1593 * This is the canonical list of information elements we care about,
1588 * the filter code also gives us all changes to the Microsoft OUI 1594 * the filter code also gives us all changes to the Microsoft OUI
1589 * (00:50:F2) vendor IE which is used for WMM which we need to track. 1595 * (00:50:F2) vendor IE which is used for WMM which we need to track.
1590 * 1596 *
1591 * We implement beacon filtering in software since that means we can 1597 * We implement beacon filtering in software since that means we can
1592 * avoid processing the frame here and in cfg80211, and userspace 1598 * avoid processing the frame here and in cfg80211, and userspace
1593 * will not be able to tell whether the hardware supports it or not. 1599 * will not be able to tell whether the hardware supports it or not.
1594 * 1600 *
1595 * XXX: This list needs to be dynamic -- userspace needs to be able to 1601 * XXX: This list needs to be dynamic -- userspace needs to be able to
1596 * add items it requires. It also needs to be able to tell us to 1602 * add items it requires. It also needs to be able to tell us to
1597 * look out for other vendor IEs. 1603 * look out for other vendor IEs.
1598 */ 1604 */
1599 static const u64 care_about_ies = 1605 static const u64 care_about_ies =
1600 (1ULL << WLAN_EID_COUNTRY) | 1606 (1ULL << WLAN_EID_COUNTRY) |
1601 (1ULL << WLAN_EID_ERP_INFO) | 1607 (1ULL << WLAN_EID_ERP_INFO) |
1602 (1ULL << WLAN_EID_CHANNEL_SWITCH) | 1608 (1ULL << WLAN_EID_CHANNEL_SWITCH) |
1603 (1ULL << WLAN_EID_PWR_CONSTRAINT) | 1609 (1ULL << WLAN_EID_PWR_CONSTRAINT) |
1604 (1ULL << WLAN_EID_HT_CAPABILITY) | 1610 (1ULL << WLAN_EID_HT_CAPABILITY) |
1605 (1ULL << WLAN_EID_HT_INFORMATION); 1611 (1ULL << WLAN_EID_HT_INFORMATION);
1606 1612
1607 static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata, 1613 static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
1608 struct ieee80211_mgmt *mgmt, 1614 struct ieee80211_mgmt *mgmt,
1609 size_t len, 1615 size_t len,
1610 struct ieee80211_rx_status *rx_status) 1616 struct ieee80211_rx_status *rx_status)
1611 { 1617 {
1612 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 1618 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1613 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf; 1619 struct ieee80211_bss_conf *bss_conf = &sdata->vif.bss_conf;
1614 size_t baselen; 1620 size_t baselen;
1615 struct ieee802_11_elems elems; 1621 struct ieee802_11_elems elems;
1616 struct ieee80211_local *local = sdata->local; 1622 struct ieee80211_local *local = sdata->local;
1617 u32 changed = 0; 1623 u32 changed = 0;
1618 bool erp_valid, directed_tim = false; 1624 bool erp_valid, directed_tim = false;
1619 u8 erp_value = 0; 1625 u8 erp_value = 0;
1620 u32 ncrc; 1626 u32 ncrc;
1621 u8 *bssid; 1627 u8 *bssid;
1622 1628
1623 ASSERT_MGD_MTX(ifmgd); 1629 ASSERT_MGD_MTX(ifmgd);
1624 1630
1625 /* Process beacon from the current BSS */ 1631 /* Process beacon from the current BSS */
1626 baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt; 1632 baselen = (u8 *) mgmt->u.beacon.variable - (u8 *) mgmt;
1627 if (baselen > len) 1633 if (baselen > len)
1628 return; 1634 return;
1629 1635
1630 if (rx_status->freq != local->hw.conf.channel->center_freq) 1636 if (rx_status->freq != local->hw.conf.channel->center_freq)
1631 return; 1637 return;
1632 1638
1633 /* 1639 /*
1634 * We might have received a number of frames, among them a 1640 * We might have received a number of frames, among them a
1635 * disassoc frame and a beacon... 1641 * disassoc frame and a beacon...
1636 */ 1642 */
1637 if (!ifmgd->associated) 1643 if (!ifmgd->associated)
1638 return; 1644 return;
1639 1645
1640 bssid = ifmgd->associated->bssid; 1646 bssid = ifmgd->associated->bssid;
1641 1647
1642 /* 1648 /*
1643 * And in theory even frames from a different AP we were just 1649 * And in theory even frames from a different AP we were just
1644 * associated to a split-second ago! 1650 * associated to a split-second ago!
1645 */ 1651 */
1646 if (memcmp(bssid, mgmt->bssid, ETH_ALEN) != 0) 1652 if (memcmp(bssid, mgmt->bssid, ETH_ALEN) != 0)
1647 return; 1653 return;
1648 1654
1649 /* Track average RSSI from the Beacon frames of the current AP */ 1655 /* Track average RSSI from the Beacon frames of the current AP */
1650 ifmgd->last_beacon_signal = rx_status->signal; 1656 ifmgd->last_beacon_signal = rx_status->signal;
1651 if (ifmgd->flags & IEEE80211_STA_RESET_SIGNAL_AVE) { 1657 if (ifmgd->flags & IEEE80211_STA_RESET_SIGNAL_AVE) {
1652 ifmgd->flags &= ~IEEE80211_STA_RESET_SIGNAL_AVE; 1658 ifmgd->flags &= ~IEEE80211_STA_RESET_SIGNAL_AVE;
1653 ifmgd->ave_beacon_signal = rx_status->signal * 16; 1659 ifmgd->ave_beacon_signal = rx_status->signal * 16;
1654 ifmgd->last_cqm_event_signal = 0; 1660 ifmgd->last_cqm_event_signal = 0;
1655 ifmgd->count_beacon_signal = 1; 1661 ifmgd->count_beacon_signal = 1;
1656 } else { 1662 } else {
1657 ifmgd->ave_beacon_signal = 1663 ifmgd->ave_beacon_signal =
1658 (IEEE80211_SIGNAL_AVE_WEIGHT * rx_status->signal * 16 + 1664 (IEEE80211_SIGNAL_AVE_WEIGHT * rx_status->signal * 16 +
1659 (16 - IEEE80211_SIGNAL_AVE_WEIGHT) * 1665 (16 - IEEE80211_SIGNAL_AVE_WEIGHT) *
1660 ifmgd->ave_beacon_signal) / 16; 1666 ifmgd->ave_beacon_signal) / 16;
1661 ifmgd->count_beacon_signal++; 1667 ifmgd->count_beacon_signal++;
1662 } 1668 }
1663 if (bss_conf->cqm_rssi_thold && 1669 if (bss_conf->cqm_rssi_thold &&
1664 ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT && 1670 ifmgd->count_beacon_signal >= IEEE80211_SIGNAL_AVE_MIN_COUNT &&
1665 !(local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI)) { 1671 !(local->hw.flags & IEEE80211_HW_SUPPORTS_CQM_RSSI)) {
1666 int sig = ifmgd->ave_beacon_signal / 16; 1672 int sig = ifmgd->ave_beacon_signal / 16;
1667 int last_event = ifmgd->last_cqm_event_signal; 1673 int last_event = ifmgd->last_cqm_event_signal;
1668 int thold = bss_conf->cqm_rssi_thold; 1674 int thold = bss_conf->cqm_rssi_thold;
1669 int hyst = bss_conf->cqm_rssi_hyst; 1675 int hyst = bss_conf->cqm_rssi_hyst;
1670 if (sig < thold && 1676 if (sig < thold &&
1671 (last_event == 0 || sig < last_event - hyst)) { 1677 (last_event == 0 || sig < last_event - hyst)) {
1672 ifmgd->last_cqm_event_signal = sig; 1678 ifmgd->last_cqm_event_signal = sig;
1673 ieee80211_cqm_rssi_notify( 1679 ieee80211_cqm_rssi_notify(
1674 &sdata->vif, 1680 &sdata->vif,
1675 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW, 1681 NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
1676 GFP_KERNEL); 1682 GFP_KERNEL);
1677 } else if (sig > thold && 1683 } else if (sig > thold &&
1678 (last_event == 0 || sig > last_event + hyst)) { 1684 (last_event == 0 || sig > last_event + hyst)) {
1679 ifmgd->last_cqm_event_signal = sig; 1685 ifmgd->last_cqm_event_signal = sig;
1680 ieee80211_cqm_rssi_notify( 1686 ieee80211_cqm_rssi_notify(
1681 &sdata->vif, 1687 &sdata->vif,
1682 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH, 1688 NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
1683 GFP_KERNEL); 1689 GFP_KERNEL);
1684 } 1690 }
1685 } 1691 }
1686 1692
1687 if (ifmgd->flags & IEEE80211_STA_BEACON_POLL) { 1693 if (ifmgd->flags & IEEE80211_STA_BEACON_POLL) {
1688 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG 1694 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
1689 if (net_ratelimit()) { 1695 if (net_ratelimit()) {
1690 printk(KERN_DEBUG "%s: cancelling probereq poll due " 1696 printk(KERN_DEBUG "%s: cancelling probereq poll due "
1691 "to a received beacon\n", sdata->name); 1697 "to a received beacon\n", sdata->name);
1692 } 1698 }
1693 #endif 1699 #endif
1694 ifmgd->flags &= ~IEEE80211_STA_BEACON_POLL; 1700 ifmgd->flags &= ~IEEE80211_STA_BEACON_POLL;
1695 mutex_lock(&local->iflist_mtx); 1701 mutex_lock(&local->iflist_mtx);
1696 ieee80211_recalc_ps(local, -1); 1702 ieee80211_recalc_ps(local, -1);
1697 mutex_unlock(&local->iflist_mtx); 1703 mutex_unlock(&local->iflist_mtx);
1698 } 1704 }
1699 1705
1700 /* 1706 /*
1701 * Push the beacon loss detection into the future since 1707 * Push the beacon loss detection into the future since
1702 * we are processing a beacon from the AP just now. 1708 * we are processing a beacon from the AP just now.
1703 */ 1709 */
1704 ieee80211_sta_reset_beacon_monitor(sdata); 1710 ieee80211_sta_reset_beacon_monitor(sdata);
1705 1711
1706 ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4); 1712 ncrc = crc32_be(0, (void *)&mgmt->u.beacon.beacon_int, 4);
1707 ncrc = ieee802_11_parse_elems_crc(mgmt->u.beacon.variable, 1713 ncrc = ieee802_11_parse_elems_crc(mgmt->u.beacon.variable,
1708 len - baselen, &elems, 1714 len - baselen, &elems,
1709 care_about_ies, ncrc); 1715 care_about_ies, ncrc);
1710 1716
1711 if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) 1717 if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK)
1712 directed_tim = ieee80211_check_tim(elems.tim, elems.tim_len, 1718 directed_tim = ieee80211_check_tim(elems.tim, elems.tim_len,
1713 ifmgd->aid); 1719 ifmgd->aid);
1714 1720
1715 if (ncrc != ifmgd->beacon_crc || !ifmgd->beacon_crc_valid) { 1721 if (ncrc != ifmgd->beacon_crc || !ifmgd->beacon_crc_valid) {
1716 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems, 1722 ieee80211_rx_bss_info(sdata, mgmt, len, rx_status, &elems,
1717 true); 1723 true);
1718 1724
1719 ieee80211_sta_wmm_params(local, sdata, elems.wmm_param, 1725 ieee80211_sta_wmm_params(local, sdata, elems.wmm_param,
1720 elems.wmm_param_len); 1726 elems.wmm_param_len);
1721 } 1727 }
1722 1728
1723 if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) { 1729 if (local->hw.flags & IEEE80211_HW_PS_NULLFUNC_STACK) {
1724 if (directed_tim) { 1730 if (directed_tim) {
1725 if (local->hw.conf.dynamic_ps_timeout > 0) { 1731 if (local->hw.conf.dynamic_ps_timeout > 0) {
1726 local->hw.conf.flags &= ~IEEE80211_CONF_PS; 1732 local->hw.conf.flags &= ~IEEE80211_CONF_PS;
1727 ieee80211_hw_config(local, 1733 ieee80211_hw_config(local,
1728 IEEE80211_CONF_CHANGE_PS); 1734 IEEE80211_CONF_CHANGE_PS);
1729 ieee80211_send_nullfunc(local, sdata, 0); 1735 ieee80211_send_nullfunc(local, sdata, 0);
1730 } else { 1736 } else {
1731 local->pspolling = true; 1737 local->pspolling = true;
1732 1738
1733 /* 1739 /*
1734 * Here is assumed that the driver will be 1740 * Here is assumed that the driver will be
1735 * able to send ps-poll frame and receive a 1741 * able to send ps-poll frame and receive a
1736 * response even though power save mode is 1742 * response even though power save mode is
1737 * enabled, but some drivers might require 1743 * enabled, but some drivers might require
1738 * to disable power save here. This needs 1744 * to disable power save here. This needs
1739 * to be investigated. 1745 * to be investigated.
1740 */ 1746 */
1741 ieee80211_send_pspoll(local, sdata); 1747 ieee80211_send_pspoll(local, sdata);
1742 } 1748 }
1743 } 1749 }
1744 } 1750 }
1745 1751
1746 if (ncrc == ifmgd->beacon_crc && ifmgd->beacon_crc_valid) 1752 if (ncrc == ifmgd->beacon_crc && ifmgd->beacon_crc_valid)
1747 return; 1753 return;
1748 ifmgd->beacon_crc = ncrc; 1754 ifmgd->beacon_crc = ncrc;
1749 ifmgd->beacon_crc_valid = true; 1755 ifmgd->beacon_crc_valid = true;
1750 1756
1751 if (elems.erp_info && elems.erp_info_len >= 1) { 1757 if (elems.erp_info && elems.erp_info_len >= 1) {
1752 erp_valid = true; 1758 erp_valid = true;
1753 erp_value = elems.erp_info[0]; 1759 erp_value = elems.erp_info[0];
1754 } else { 1760 } else {
1755 erp_valid = false; 1761 erp_valid = false;
1756 } 1762 }
1757 changed |= ieee80211_handle_bss_capability(sdata, 1763 changed |= ieee80211_handle_bss_capability(sdata,
1758 le16_to_cpu(mgmt->u.beacon.capab_info), 1764 le16_to_cpu(mgmt->u.beacon.capab_info),
1759 erp_valid, erp_value); 1765 erp_valid, erp_value);
1760 1766
1761 1767
1762 if (elems.ht_cap_elem && elems.ht_info_elem && elems.wmm_param && 1768 if (elems.ht_cap_elem && elems.ht_info_elem && elems.wmm_param &&
1763 !(ifmgd->flags & IEEE80211_STA_DISABLE_11N)) { 1769 !(ifmgd->flags & IEEE80211_STA_DISABLE_11N)) {
1764 struct sta_info *sta; 1770 struct sta_info *sta;
1765 struct ieee80211_supported_band *sband; 1771 struct ieee80211_supported_band *sband;
1766 u16 ap_ht_cap_flags; 1772 u16 ap_ht_cap_flags;
1767 1773
1768 rcu_read_lock(); 1774 rcu_read_lock();
1769 1775
1770 sta = sta_info_get(sdata, bssid); 1776 sta = sta_info_get(sdata, bssid);
1771 if (WARN_ON(!sta)) { 1777 if (WARN_ON(!sta)) {
1772 rcu_read_unlock(); 1778 rcu_read_unlock();
1773 return; 1779 return;
1774 } 1780 }
1775 1781
1776 sband = local->hw.wiphy->bands[local->hw.conf.channel->band]; 1782 sband = local->hw.wiphy->bands[local->hw.conf.channel->band];
1777 1783
1778 ieee80211_ht_cap_ie_to_sta_ht_cap(sband, 1784 ieee80211_ht_cap_ie_to_sta_ht_cap(sband,
1779 elems.ht_cap_elem, &sta->sta.ht_cap); 1785 elems.ht_cap_elem, &sta->sta.ht_cap);
1780 1786
1781 ap_ht_cap_flags = sta->sta.ht_cap.cap; 1787 ap_ht_cap_flags = sta->sta.ht_cap.cap;
1782 1788
1783 rcu_read_unlock(); 1789 rcu_read_unlock();
1784 1790
1785 changed |= ieee80211_enable_ht(sdata, elems.ht_info_elem, 1791 changed |= ieee80211_enable_ht(sdata, elems.ht_info_elem,
1786 bssid, ap_ht_cap_flags); 1792 bssid, ap_ht_cap_flags);
1787 } 1793 }
1788 1794
1789 /* Note: country IE parsing is done for us by cfg80211 */ 1795 /* Note: country IE parsing is done for us by cfg80211 */
1790 if (elems.country_elem) { 1796 if (elems.country_elem) {
1791 /* TODO: IBSS also needs this */ 1797 /* TODO: IBSS also needs this */
1792 if (elems.pwr_constr_elem) 1798 if (elems.pwr_constr_elem)
1793 ieee80211_handle_pwr_constr(sdata, 1799 ieee80211_handle_pwr_constr(sdata,
1794 le16_to_cpu(mgmt->u.probe_resp.capab_info), 1800 le16_to_cpu(mgmt->u.probe_resp.capab_info),
1795 elems.pwr_constr_elem, 1801 elems.pwr_constr_elem,
1796 elems.pwr_constr_elem_len); 1802 elems.pwr_constr_elem_len);
1797 } 1803 }
1798 1804
1799 ieee80211_bss_info_change_notify(sdata, changed); 1805 ieee80211_bss_info_change_notify(sdata, changed);
1800 } 1806 }
1801 1807
1802 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata, 1808 void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
1803 struct sk_buff *skb) 1809 struct sk_buff *skb)
1804 { 1810 {
1805 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 1811 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1806 struct ieee80211_rx_status *rx_status; 1812 struct ieee80211_rx_status *rx_status;
1807 struct ieee80211_mgmt *mgmt; 1813 struct ieee80211_mgmt *mgmt;
1808 enum rx_mgmt_action rma = RX_MGMT_NONE; 1814 enum rx_mgmt_action rma = RX_MGMT_NONE;
1809 u16 fc; 1815 u16 fc;
1810 1816
1811 rx_status = (struct ieee80211_rx_status *) skb->cb; 1817 rx_status = (struct ieee80211_rx_status *) skb->cb;
1812 mgmt = (struct ieee80211_mgmt *) skb->data; 1818 mgmt = (struct ieee80211_mgmt *) skb->data;
1813 fc = le16_to_cpu(mgmt->frame_control); 1819 fc = le16_to_cpu(mgmt->frame_control);
1814 1820
1815 mutex_lock(&ifmgd->mtx); 1821 mutex_lock(&ifmgd->mtx);
1816 1822
1817 if (ifmgd->associated && 1823 if (ifmgd->associated &&
1818 memcmp(ifmgd->associated->bssid, mgmt->bssid, ETH_ALEN) == 0) { 1824 memcmp(ifmgd->associated->bssid, mgmt->bssid, ETH_ALEN) == 0) {
1819 switch (fc & IEEE80211_FCTL_STYPE) { 1825 switch (fc & IEEE80211_FCTL_STYPE) {
1820 case IEEE80211_STYPE_BEACON: 1826 case IEEE80211_STYPE_BEACON:
1821 ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len, 1827 ieee80211_rx_mgmt_beacon(sdata, mgmt, skb->len,
1822 rx_status); 1828 rx_status);
1823 break; 1829 break;
1824 case IEEE80211_STYPE_PROBE_RESP: 1830 case IEEE80211_STYPE_PROBE_RESP:
1825 ieee80211_rx_mgmt_probe_resp(sdata, skb); 1831 ieee80211_rx_mgmt_probe_resp(sdata, skb);
1826 break; 1832 break;
1827 case IEEE80211_STYPE_DEAUTH: 1833 case IEEE80211_STYPE_DEAUTH:
1828 rma = ieee80211_rx_mgmt_deauth(sdata, mgmt, skb->len); 1834 rma = ieee80211_rx_mgmt_deauth(sdata, mgmt, skb->len);
1829 break; 1835 break;
1830 case IEEE80211_STYPE_DISASSOC: 1836 case IEEE80211_STYPE_DISASSOC:
1831 rma = ieee80211_rx_mgmt_disassoc(sdata, mgmt, skb->len); 1837 rma = ieee80211_rx_mgmt_disassoc(sdata, mgmt, skb->len);
1832 break; 1838 break;
1833 case IEEE80211_STYPE_ACTION: 1839 case IEEE80211_STYPE_ACTION:
1834 switch (mgmt->u.action.category) { 1840 switch (mgmt->u.action.category) {
1835 case WLAN_CATEGORY_SPECTRUM_MGMT: 1841 case WLAN_CATEGORY_SPECTRUM_MGMT:
1836 ieee80211_sta_process_chanswitch(sdata, 1842 ieee80211_sta_process_chanswitch(sdata,
1837 &mgmt->u.action.u.chan_switch.sw_elem, 1843 &mgmt->u.action.u.chan_switch.sw_elem,
1838 (void *)ifmgd->associated->priv, 1844 (void *)ifmgd->associated->priv,
1839 rx_status->mactime); 1845 rx_status->mactime);
1840 break; 1846 break;
1841 } 1847 }
1842 } 1848 }
1843 mutex_unlock(&ifmgd->mtx); 1849 mutex_unlock(&ifmgd->mtx);
1844 1850
1845 switch (rma) { 1851 switch (rma) {
1846 case RX_MGMT_NONE: 1852 case RX_MGMT_NONE:
1847 /* no action */ 1853 /* no action */
1848 break; 1854 break;
1849 case RX_MGMT_CFG80211_DEAUTH: 1855 case RX_MGMT_CFG80211_DEAUTH:
1850 cfg80211_send_deauth(sdata->dev, (u8 *)mgmt, skb->len); 1856 cfg80211_send_deauth(sdata->dev, (u8 *)mgmt, skb->len);
1851 break; 1857 break;
1852 case RX_MGMT_CFG80211_DISASSOC: 1858 case RX_MGMT_CFG80211_DISASSOC:
1853 cfg80211_send_disassoc(sdata->dev, (u8 *)mgmt, skb->len); 1859 cfg80211_send_disassoc(sdata->dev, (u8 *)mgmt, skb->len);
1854 break; 1860 break;
1855 default: 1861 default:
1856 WARN(1, "unexpected: %d", rma); 1862 WARN(1, "unexpected: %d", rma);
1857 } 1863 }
1858 return; 1864 return;
1859 } 1865 }
1860 1866
1861 mutex_unlock(&ifmgd->mtx); 1867 mutex_unlock(&ifmgd->mtx);
1862 1868
1863 if (skb->len >= 24 + 2 /* mgmt + deauth reason */ && 1869 if (skb->len >= 24 + 2 /* mgmt + deauth reason */ &&
1864 (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_DEAUTH) { 1870 (fc & IEEE80211_FCTL_STYPE) == IEEE80211_STYPE_DEAUTH) {
1865 struct ieee80211_local *local = sdata->local; 1871 struct ieee80211_local *local = sdata->local;
1866 struct ieee80211_work *wk; 1872 struct ieee80211_work *wk;
1867 1873
1868 mutex_lock(&local->mtx); 1874 mutex_lock(&local->mtx);
1869 list_for_each_entry(wk, &local->work_list, list) { 1875 list_for_each_entry(wk, &local->work_list, list) {
1870 if (wk->sdata != sdata) 1876 if (wk->sdata != sdata)
1871 continue; 1877 continue;
1872 1878
1873 if (wk->type != IEEE80211_WORK_ASSOC && 1879 if (wk->type != IEEE80211_WORK_ASSOC &&
1874 wk->type != IEEE80211_WORK_ASSOC_BEACON_WAIT) 1880 wk->type != IEEE80211_WORK_ASSOC_BEACON_WAIT)
1875 continue; 1881 continue;
1876 1882
1877 if (memcmp(mgmt->bssid, wk->filter_ta, ETH_ALEN)) 1883 if (memcmp(mgmt->bssid, wk->filter_ta, ETH_ALEN))
1878 continue; 1884 continue;
1879 if (memcmp(mgmt->sa, wk->filter_ta, ETH_ALEN)) 1885 if (memcmp(mgmt->sa, wk->filter_ta, ETH_ALEN))
1880 continue; 1886 continue;
1881 1887
1882 /* 1888 /*
1883 * Printing the message only here means we can't 1889 * Printing the message only here means we can't
1884 * spuriously print it, but it also means that it 1890 * spuriously print it, but it also means that it
1885 * won't be printed when the frame comes in before 1891 * won't be printed when the frame comes in before
1886 * we even tried to associate or in similar cases. 1892 * we even tried to associate or in similar cases.
1887 * 1893 *
1888 * Ultimately, I suspect cfg80211 should print the 1894 * Ultimately, I suspect cfg80211 should print the
1889 * messages instead. 1895 * messages instead.
1890 */ 1896 */
1891 printk(KERN_DEBUG 1897 printk(KERN_DEBUG
1892 "%s: deauthenticated from %pM (Reason: %u)\n", 1898 "%s: deauthenticated from %pM (Reason: %u)\n",
1893 sdata->name, mgmt->bssid, 1899 sdata->name, mgmt->bssid,
1894 le16_to_cpu(mgmt->u.deauth.reason_code)); 1900 le16_to_cpu(mgmt->u.deauth.reason_code));
1895 1901
1896 list_del_rcu(&wk->list); 1902 list_del_rcu(&wk->list);
1897 free_work(wk); 1903 free_work(wk);
1898 break; 1904 break;
1899 } 1905 }
1900 mutex_unlock(&local->mtx); 1906 mutex_unlock(&local->mtx);
1901 1907
1902 cfg80211_send_deauth(sdata->dev, (u8 *)mgmt, skb->len); 1908 cfg80211_send_deauth(sdata->dev, (u8 *)mgmt, skb->len);
1903 } 1909 }
1904 } 1910 }
1905 1911
1906 static void ieee80211_sta_timer(unsigned long data) 1912 static void ieee80211_sta_timer(unsigned long data)
1907 { 1913 {
1908 struct ieee80211_sub_if_data *sdata = 1914 struct ieee80211_sub_if_data *sdata =
1909 (struct ieee80211_sub_if_data *) data; 1915 (struct ieee80211_sub_if_data *) data;
1910 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 1916 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1911 struct ieee80211_local *local = sdata->local; 1917 struct ieee80211_local *local = sdata->local;
1912 1918
1913 if (local->quiescing) { 1919 if (local->quiescing) {
1914 set_bit(TMR_RUNNING_TIMER, &ifmgd->timers_running); 1920 set_bit(TMR_RUNNING_TIMER, &ifmgd->timers_running);
1915 return; 1921 return;
1916 } 1922 }
1917 1923
1918 ieee80211_queue_work(&local->hw, &sdata->work); 1924 ieee80211_queue_work(&local->hw, &sdata->work);
1919 } 1925 }
1920 1926
1921 static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata, 1927 static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
1922 u8 *bssid) 1928 u8 *bssid)
1923 { 1929 {
1924 struct ieee80211_local *local = sdata->local; 1930 struct ieee80211_local *local = sdata->local;
1925 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 1931 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1926 1932
1927 ifmgd->flags &= ~(IEEE80211_STA_CONNECTION_POLL | 1933 ifmgd->flags &= ~(IEEE80211_STA_CONNECTION_POLL |
1928 IEEE80211_STA_BEACON_POLL); 1934 IEEE80211_STA_BEACON_POLL);
1929 1935
1930 ieee80211_set_disassoc(sdata, true, true); 1936 ieee80211_set_disassoc(sdata, true, true);
1931 mutex_unlock(&ifmgd->mtx); 1937 mutex_unlock(&ifmgd->mtx);
1932 mutex_lock(&local->mtx); 1938 mutex_lock(&local->mtx);
1933 ieee80211_recalc_idle(local); 1939 ieee80211_recalc_idle(local);
1934 mutex_unlock(&local->mtx); 1940 mutex_unlock(&local->mtx);
1935 /* 1941 /*
1936 * must be outside lock due to cfg80211, 1942 * must be outside lock due to cfg80211,
1937 * but that's not a problem. 1943 * but that's not a problem.
1938 */ 1944 */
1939 ieee80211_send_deauth_disassoc(sdata, bssid, 1945 ieee80211_send_deauth_disassoc(sdata, bssid,
1940 IEEE80211_STYPE_DEAUTH, 1946 IEEE80211_STYPE_DEAUTH,
1941 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY, 1947 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
1942 NULL, true); 1948 NULL, true);
1943 mutex_lock(&ifmgd->mtx); 1949 mutex_lock(&ifmgd->mtx);
1944 } 1950 }
1945 1951
1946 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata) 1952 void ieee80211_sta_work(struct ieee80211_sub_if_data *sdata)
1947 { 1953 {
1948 struct ieee80211_local *local = sdata->local; 1954 struct ieee80211_local *local = sdata->local;
1949 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 1955 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
1950 1956
1951 /* then process the rest of the work */ 1957 /* then process the rest of the work */
1952 mutex_lock(&ifmgd->mtx); 1958 mutex_lock(&ifmgd->mtx);
1953 1959
1954 if (ifmgd->flags & (IEEE80211_STA_BEACON_POLL | 1960 if (ifmgd->flags & (IEEE80211_STA_BEACON_POLL |
1955 IEEE80211_STA_CONNECTION_POLL) && 1961 IEEE80211_STA_CONNECTION_POLL) &&
1956 ifmgd->associated) { 1962 ifmgd->associated) {
1957 u8 bssid[ETH_ALEN]; 1963 u8 bssid[ETH_ALEN];
1958 int max_tries; 1964 int max_tries;
1959 1965
1960 memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN); 1966 memcpy(bssid, ifmgd->associated->bssid, ETH_ALEN);
1961 1967
1962 if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) 1968 if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS)
1963 max_tries = IEEE80211_MAX_NULLFUNC_TRIES; 1969 max_tries = IEEE80211_MAX_NULLFUNC_TRIES;
1964 else 1970 else
1965 max_tries = IEEE80211_MAX_PROBE_TRIES; 1971 max_tries = IEEE80211_MAX_PROBE_TRIES;
1966 1972
1967 /* ACK received for nullfunc probing frame */ 1973 /* ACK received for nullfunc probing frame */
1968 if (!ifmgd->probe_send_count) 1974 if (!ifmgd->probe_send_count)
1969 ieee80211_reset_ap_probe(sdata); 1975 ieee80211_reset_ap_probe(sdata);
1970 else if (ifmgd->nullfunc_failed) { 1976 else if (ifmgd->nullfunc_failed) {
1971 if (ifmgd->probe_send_count < max_tries) { 1977 if (ifmgd->probe_send_count < max_tries) {
1972 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG 1978 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
1973 wiphy_debug(local->hw.wiphy, 1979 wiphy_debug(local->hw.wiphy,
1974 "%s: No ack for nullfunc frame to" 1980 "%s: No ack for nullfunc frame to"
1975 " AP %pM, try %d\n", 1981 " AP %pM, try %d\n",
1976 sdata->name, bssid, 1982 sdata->name, bssid,
1977 ifmgd->probe_send_count); 1983 ifmgd->probe_send_count);
1978 #endif 1984 #endif
1979 ieee80211_mgd_probe_ap_send(sdata); 1985 ieee80211_mgd_probe_ap_send(sdata);
1980 } else { 1986 } else {
1981 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG 1987 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
1982 wiphy_debug(local->hw.wiphy, 1988 wiphy_debug(local->hw.wiphy,
1983 "%s: No ack for nullfunc frame to" 1989 "%s: No ack for nullfunc frame to"
1984 " AP %pM, disconnecting.\n", 1990 " AP %pM, disconnecting.\n",
1985 sdata->name, bssid); 1991 sdata->name, bssid);
1986 #endif 1992 #endif
1987 ieee80211_sta_connection_lost(sdata, bssid); 1993 ieee80211_sta_connection_lost(sdata, bssid);
1988 } 1994 }
1989 } else if (time_is_after_jiffies(ifmgd->probe_timeout)) 1995 } else if (time_is_after_jiffies(ifmgd->probe_timeout))
1990 run_again(ifmgd, ifmgd->probe_timeout); 1996 run_again(ifmgd, ifmgd->probe_timeout);
1991 else if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) { 1997 else if (local->hw.flags & IEEE80211_HW_REPORTS_TX_ACK_STATUS) {
1992 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG 1998 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
1993 wiphy_debug(local->hw.wiphy, 1999 wiphy_debug(local->hw.wiphy,
1994 "%s: Failed to send nullfunc to AP %pM" 2000 "%s: Failed to send nullfunc to AP %pM"
1995 " after %dms, disconnecting.\n", 2001 " after %dms, disconnecting.\n",
1996 sdata->name, 2002 sdata->name,
1997 bssid, (1000 * IEEE80211_PROBE_WAIT)/HZ); 2003 bssid, (1000 * IEEE80211_PROBE_WAIT)/HZ);
1998 #endif 2004 #endif
1999 ieee80211_sta_connection_lost(sdata, bssid); 2005 ieee80211_sta_connection_lost(sdata, bssid);
2000 } else if (ifmgd->probe_send_count < max_tries) { 2006 } else if (ifmgd->probe_send_count < max_tries) {
2001 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG 2007 #ifdef CONFIG_MAC80211_VERBOSE_DEBUG
2002 wiphy_debug(local->hw.wiphy, 2008 wiphy_debug(local->hw.wiphy,
2003 "%s: No probe response from AP %pM" 2009 "%s: No probe response from AP %pM"
2004 " after %dms, try %d\n", 2010 " after %dms, try %d\n",
2005 sdata->name, 2011 sdata->name,
2006 bssid, (1000 * IEEE80211_PROBE_WAIT)/HZ, 2012 bssid, (1000 * IEEE80211_PROBE_WAIT)/HZ,
2007 ifmgd->probe_send_count); 2013 ifmgd->probe_send_count);
2008 #endif 2014 #endif
2009 ieee80211_mgd_probe_ap_send(sdata); 2015 ieee80211_mgd_probe_ap_send(sdata);
2010 } else { 2016 } else {
2011 /* 2017 /*
2012 * We actually lost the connection ... or did we? 2018 * We actually lost the connection ... or did we?
2013 * Let's make sure! 2019 * Let's make sure!
2014 */ 2020 */
2015 wiphy_debug(local->hw.wiphy, 2021 wiphy_debug(local->hw.wiphy,
2016 "%s: No probe response from AP %pM" 2022 "%s: No probe response from AP %pM"
2017 " after %dms, disconnecting.\n", 2023 " after %dms, disconnecting.\n",
2018 sdata->name, 2024 sdata->name,
2019 bssid, (1000 * IEEE80211_PROBE_WAIT)/HZ); 2025 bssid, (1000 * IEEE80211_PROBE_WAIT)/HZ);
2020 2026
2021 ieee80211_sta_connection_lost(sdata, bssid); 2027 ieee80211_sta_connection_lost(sdata, bssid);
2022 } 2028 }
2023 } 2029 }
2024 2030
2025 mutex_unlock(&ifmgd->mtx); 2031 mutex_unlock(&ifmgd->mtx);
2026 } 2032 }
2027 2033
2028 static void ieee80211_sta_bcn_mon_timer(unsigned long data) 2034 static void ieee80211_sta_bcn_mon_timer(unsigned long data)
2029 { 2035 {
2030 struct ieee80211_sub_if_data *sdata = 2036 struct ieee80211_sub_if_data *sdata =
2031 (struct ieee80211_sub_if_data *) data; 2037 (struct ieee80211_sub_if_data *) data;
2032 struct ieee80211_local *local = sdata->local; 2038 struct ieee80211_local *local = sdata->local;
2033 2039
2034 if (local->quiescing) 2040 if (local->quiescing)
2035 return; 2041 return;
2036 2042
2037 ieee80211_queue_work(&sdata->local->hw, 2043 ieee80211_queue_work(&sdata->local->hw,
2038 &sdata->u.mgd.beacon_connection_loss_work); 2044 &sdata->u.mgd.beacon_connection_loss_work);
2039 } 2045 }
2040 2046
2041 static void ieee80211_sta_conn_mon_timer(unsigned long data) 2047 static void ieee80211_sta_conn_mon_timer(unsigned long data)
2042 { 2048 {
2043 struct ieee80211_sub_if_data *sdata = 2049 struct ieee80211_sub_if_data *sdata =
2044 (struct ieee80211_sub_if_data *) data; 2050 (struct ieee80211_sub_if_data *) data;
2045 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 2051 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2046 struct ieee80211_local *local = sdata->local; 2052 struct ieee80211_local *local = sdata->local;
2047 2053
2048 if (local->quiescing) 2054 if (local->quiescing)
2049 return; 2055 return;
2050 2056
2051 ieee80211_queue_work(&local->hw, &ifmgd->monitor_work); 2057 ieee80211_queue_work(&local->hw, &ifmgd->monitor_work);
2052 } 2058 }
2053 2059
2054 static void ieee80211_sta_monitor_work(struct work_struct *work) 2060 static void ieee80211_sta_monitor_work(struct work_struct *work)
2055 { 2061 {
2056 struct ieee80211_sub_if_data *sdata = 2062 struct ieee80211_sub_if_data *sdata =
2057 container_of(work, struct ieee80211_sub_if_data, 2063 container_of(work, struct ieee80211_sub_if_data,
2058 u.mgd.monitor_work); 2064 u.mgd.monitor_work);
2059 2065
2060 ieee80211_mgd_probe_ap(sdata, false); 2066 ieee80211_mgd_probe_ap(sdata, false);
2061 } 2067 }
2062 2068
2063 static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata) 2069 static void ieee80211_restart_sta_timer(struct ieee80211_sub_if_data *sdata)
2064 { 2070 {
2065 if (sdata->vif.type == NL80211_IFTYPE_STATION) { 2071 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
2066 sdata->u.mgd.flags &= ~(IEEE80211_STA_BEACON_POLL | 2072 sdata->u.mgd.flags &= ~(IEEE80211_STA_BEACON_POLL |
2067 IEEE80211_STA_CONNECTION_POLL); 2073 IEEE80211_STA_CONNECTION_POLL);
2068 2074
2069 /* let's probe the connection once */ 2075 /* let's probe the connection once */
2070 ieee80211_queue_work(&sdata->local->hw, 2076 ieee80211_queue_work(&sdata->local->hw,
2071 &sdata->u.mgd.monitor_work); 2077 &sdata->u.mgd.monitor_work);
2072 /* and do all the other regular work too */ 2078 /* and do all the other regular work too */
2073 ieee80211_queue_work(&sdata->local->hw, &sdata->work); 2079 ieee80211_queue_work(&sdata->local->hw, &sdata->work);
2074 } 2080 }
2075 } 2081 }
2076 2082
2077 #ifdef CONFIG_PM 2083 #ifdef CONFIG_PM
2078 void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata) 2084 void ieee80211_sta_quiesce(struct ieee80211_sub_if_data *sdata)
2079 { 2085 {
2080 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 2086 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2081 2087
2082 /* 2088 /*
2083 * we need to use atomic bitops for the running bits 2089 * we need to use atomic bitops for the running bits
2084 * only because both timers might fire at the same 2090 * only because both timers might fire at the same
2085 * time -- the code here is properly synchronised. 2091 * time -- the code here is properly synchronised.
2086 */ 2092 */
2087 2093
2088 cancel_work_sync(&ifmgd->request_smps_work); 2094 cancel_work_sync(&ifmgd->request_smps_work);
2089 2095
2090 cancel_work_sync(&ifmgd->beacon_connection_loss_work); 2096 cancel_work_sync(&ifmgd->beacon_connection_loss_work);
2091 if (del_timer_sync(&ifmgd->timer)) 2097 if (del_timer_sync(&ifmgd->timer))
2092 set_bit(TMR_RUNNING_TIMER, &ifmgd->timers_running); 2098 set_bit(TMR_RUNNING_TIMER, &ifmgd->timers_running);
2093 2099
2094 cancel_work_sync(&ifmgd->chswitch_work); 2100 cancel_work_sync(&ifmgd->chswitch_work);
2095 if (del_timer_sync(&ifmgd->chswitch_timer)) 2101 if (del_timer_sync(&ifmgd->chswitch_timer))
2096 set_bit(TMR_RUNNING_CHANSW, &ifmgd->timers_running); 2102 set_bit(TMR_RUNNING_CHANSW, &ifmgd->timers_running);
2097 2103
2098 cancel_work_sync(&ifmgd->monitor_work); 2104 cancel_work_sync(&ifmgd->monitor_work);
2099 /* these will just be re-established on connection */ 2105 /* these will just be re-established on connection */
2100 del_timer_sync(&ifmgd->conn_mon_timer); 2106 del_timer_sync(&ifmgd->conn_mon_timer);
2101 del_timer_sync(&ifmgd->bcn_mon_timer); 2107 del_timer_sync(&ifmgd->bcn_mon_timer);
2102 } 2108 }
2103 2109
2104 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata) 2110 void ieee80211_sta_restart(struct ieee80211_sub_if_data *sdata)
2105 { 2111 {
2106 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 2112 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2107 2113
2108 if (test_and_clear_bit(TMR_RUNNING_TIMER, &ifmgd->timers_running)) 2114 if (test_and_clear_bit(TMR_RUNNING_TIMER, &ifmgd->timers_running))
2109 add_timer(&ifmgd->timer); 2115 add_timer(&ifmgd->timer);
2110 if (test_and_clear_bit(TMR_RUNNING_CHANSW, &ifmgd->timers_running)) 2116 if (test_and_clear_bit(TMR_RUNNING_CHANSW, &ifmgd->timers_running))
2111 add_timer(&ifmgd->chswitch_timer); 2117 add_timer(&ifmgd->chswitch_timer);
2112 ieee80211_sta_reset_beacon_monitor(sdata); 2118 ieee80211_sta_reset_beacon_monitor(sdata);
2113 ieee80211_restart_sta_timer(sdata); 2119 ieee80211_restart_sta_timer(sdata);
2114 } 2120 }
2115 #endif 2121 #endif
2116 2122
2117 /* interface setup */ 2123 /* interface setup */
2118 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata) 2124 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata)
2119 { 2125 {
2120 struct ieee80211_if_managed *ifmgd; 2126 struct ieee80211_if_managed *ifmgd;
2121 2127
2122 ifmgd = &sdata->u.mgd; 2128 ifmgd = &sdata->u.mgd;
2123 INIT_WORK(&ifmgd->monitor_work, ieee80211_sta_monitor_work); 2129 INIT_WORK(&ifmgd->monitor_work, ieee80211_sta_monitor_work);
2124 INIT_WORK(&ifmgd->chswitch_work, ieee80211_chswitch_work); 2130 INIT_WORK(&ifmgd->chswitch_work, ieee80211_chswitch_work);
2125 INIT_WORK(&ifmgd->beacon_connection_loss_work, 2131 INIT_WORK(&ifmgd->beacon_connection_loss_work,
2126 ieee80211_beacon_connection_loss_work); 2132 ieee80211_beacon_connection_loss_work);
2127 INIT_WORK(&ifmgd->request_smps_work, ieee80211_request_smps_work); 2133 INIT_WORK(&ifmgd->request_smps_work, ieee80211_request_smps_work);
2128 setup_timer(&ifmgd->timer, ieee80211_sta_timer, 2134 setup_timer(&ifmgd->timer, ieee80211_sta_timer,
2129 (unsigned long) sdata); 2135 (unsigned long) sdata);
2130 setup_timer(&ifmgd->bcn_mon_timer, ieee80211_sta_bcn_mon_timer, 2136 setup_timer(&ifmgd->bcn_mon_timer, ieee80211_sta_bcn_mon_timer,
2131 (unsigned long) sdata); 2137 (unsigned long) sdata);
2132 setup_timer(&ifmgd->conn_mon_timer, ieee80211_sta_conn_mon_timer, 2138 setup_timer(&ifmgd->conn_mon_timer, ieee80211_sta_conn_mon_timer,
2133 (unsigned long) sdata); 2139 (unsigned long) sdata);
2134 setup_timer(&ifmgd->chswitch_timer, ieee80211_chswitch_timer, 2140 setup_timer(&ifmgd->chswitch_timer, ieee80211_chswitch_timer,
2135 (unsigned long) sdata); 2141 (unsigned long) sdata);
2136 2142
2137 ifmgd->flags = 0; 2143 ifmgd->flags = 0;
2138 2144
2139 mutex_init(&ifmgd->mtx); 2145 mutex_init(&ifmgd->mtx);
2140 2146
2141 if (sdata->local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS) 2147 if (sdata->local->hw.flags & IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS)
2142 ifmgd->req_smps = IEEE80211_SMPS_AUTOMATIC; 2148 ifmgd->req_smps = IEEE80211_SMPS_AUTOMATIC;
2143 else 2149 else
2144 ifmgd->req_smps = IEEE80211_SMPS_OFF; 2150 ifmgd->req_smps = IEEE80211_SMPS_OFF;
2145 } 2151 }
2146 2152
2147 /* scan finished notification */ 2153 /* scan finished notification */
2148 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local) 2154 void ieee80211_mlme_notify_scan_completed(struct ieee80211_local *local)
2149 { 2155 {
2150 struct ieee80211_sub_if_data *sdata = local->scan_sdata; 2156 struct ieee80211_sub_if_data *sdata = local->scan_sdata;
2151 2157
2152 /* Restart STA timers */ 2158 /* Restart STA timers */
2153 rcu_read_lock(); 2159 rcu_read_lock();
2154 list_for_each_entry_rcu(sdata, &local->interfaces, list) 2160 list_for_each_entry_rcu(sdata, &local->interfaces, list)
2155 ieee80211_restart_sta_timer(sdata); 2161 ieee80211_restart_sta_timer(sdata);
2156 rcu_read_unlock(); 2162 rcu_read_unlock();
2157 } 2163 }
2158 2164
2159 int ieee80211_max_network_latency(struct notifier_block *nb, 2165 int ieee80211_max_network_latency(struct notifier_block *nb,
2160 unsigned long data, void *dummy) 2166 unsigned long data, void *dummy)
2161 { 2167 {
2162 s32 latency_usec = (s32) data; 2168 s32 latency_usec = (s32) data;
2163 struct ieee80211_local *local = 2169 struct ieee80211_local *local =
2164 container_of(nb, struct ieee80211_local, 2170 container_of(nb, struct ieee80211_local,
2165 network_latency_notifier); 2171 network_latency_notifier);
2166 2172
2167 mutex_lock(&local->iflist_mtx); 2173 mutex_lock(&local->iflist_mtx);
2168 ieee80211_recalc_ps(local, latency_usec); 2174 ieee80211_recalc_ps(local, latency_usec);
2169 mutex_unlock(&local->iflist_mtx); 2175 mutex_unlock(&local->iflist_mtx);
2170 2176
2171 return 0; 2177 return 0;
2172 } 2178 }
2173 2179
2174 /* config hooks */ 2180 /* config hooks */
2175 static enum work_done_result 2181 static enum work_done_result
2176 ieee80211_probe_auth_done(struct ieee80211_work *wk, 2182 ieee80211_probe_auth_done(struct ieee80211_work *wk,
2177 struct sk_buff *skb) 2183 struct sk_buff *skb)
2178 { 2184 {
2179 if (!skb) { 2185 if (!skb) {
2180 cfg80211_send_auth_timeout(wk->sdata->dev, wk->filter_ta); 2186 cfg80211_send_auth_timeout(wk->sdata->dev, wk->filter_ta);
2181 return WORK_DONE_DESTROY; 2187 return WORK_DONE_DESTROY;
2182 } 2188 }
2183 2189
2184 if (wk->type == IEEE80211_WORK_AUTH) { 2190 if (wk->type == IEEE80211_WORK_AUTH) {
2185 cfg80211_send_rx_auth(wk->sdata->dev, skb->data, skb->len); 2191 cfg80211_send_rx_auth(wk->sdata->dev, skb->data, skb->len);
2186 return WORK_DONE_DESTROY; 2192 return WORK_DONE_DESTROY;
2187 } 2193 }
2188 2194
2189 mutex_lock(&wk->sdata->u.mgd.mtx); 2195 mutex_lock(&wk->sdata->u.mgd.mtx);
2190 ieee80211_rx_mgmt_probe_resp(wk->sdata, skb); 2196 ieee80211_rx_mgmt_probe_resp(wk->sdata, skb);
2191 mutex_unlock(&wk->sdata->u.mgd.mtx); 2197 mutex_unlock(&wk->sdata->u.mgd.mtx);
2192 2198
2193 wk->type = IEEE80211_WORK_AUTH; 2199 wk->type = IEEE80211_WORK_AUTH;
2194 wk->probe_auth.tries = 0; 2200 wk->probe_auth.tries = 0;
2195 return WORK_DONE_REQUEUE; 2201 return WORK_DONE_REQUEUE;
2196 } 2202 }
2197 2203
2198 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata, 2204 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
2199 struct cfg80211_auth_request *req) 2205 struct cfg80211_auth_request *req)
2200 { 2206 {
2201 const u8 *ssid; 2207 const u8 *ssid;
2202 struct ieee80211_work *wk; 2208 struct ieee80211_work *wk;
2203 u16 auth_alg; 2209 u16 auth_alg;
2204 2210
2205 if (req->local_state_change) 2211 if (req->local_state_change)
2206 return 0; /* no need to update mac80211 state */ 2212 return 0; /* no need to update mac80211 state */
2207 2213
2208 switch (req->auth_type) { 2214 switch (req->auth_type) {
2209 case NL80211_AUTHTYPE_OPEN_SYSTEM: 2215 case NL80211_AUTHTYPE_OPEN_SYSTEM:
2210 auth_alg = WLAN_AUTH_OPEN; 2216 auth_alg = WLAN_AUTH_OPEN;
2211 break; 2217 break;
2212 case NL80211_AUTHTYPE_SHARED_KEY: 2218 case NL80211_AUTHTYPE_SHARED_KEY:
2213 if (IS_ERR(sdata->local->wep_tx_tfm)) 2219 if (IS_ERR(sdata->local->wep_tx_tfm))
2214 return -EOPNOTSUPP; 2220 return -EOPNOTSUPP;
2215 auth_alg = WLAN_AUTH_SHARED_KEY; 2221 auth_alg = WLAN_AUTH_SHARED_KEY;
2216 break; 2222 break;
2217 case NL80211_AUTHTYPE_FT: 2223 case NL80211_AUTHTYPE_FT:
2218 auth_alg = WLAN_AUTH_FT; 2224 auth_alg = WLAN_AUTH_FT;
2219 break; 2225 break;
2220 case NL80211_AUTHTYPE_NETWORK_EAP: 2226 case NL80211_AUTHTYPE_NETWORK_EAP:
2221 auth_alg = WLAN_AUTH_LEAP; 2227 auth_alg = WLAN_AUTH_LEAP;
2222 break; 2228 break;
2223 default: 2229 default:
2224 return -EOPNOTSUPP; 2230 return -EOPNOTSUPP;
2225 } 2231 }
2226 2232
2227 wk = kzalloc(sizeof(*wk) + req->ie_len, GFP_KERNEL); 2233 wk = kzalloc(sizeof(*wk) + req->ie_len, GFP_KERNEL);
2228 if (!wk) 2234 if (!wk)
2229 return -ENOMEM; 2235 return -ENOMEM;
2230 2236
2231 memcpy(wk->filter_ta, req->bss->bssid, ETH_ALEN); 2237 memcpy(wk->filter_ta, req->bss->bssid, ETH_ALEN);
2232 2238
2233 if (req->ie && req->ie_len) { 2239 if (req->ie && req->ie_len) {
2234 memcpy(wk->ie, req->ie, req->ie_len); 2240 memcpy(wk->ie, req->ie, req->ie_len);
2235 wk->ie_len = req->ie_len; 2241 wk->ie_len = req->ie_len;
2236 } 2242 }
2237 2243
2238 if (req->key && req->key_len) { 2244 if (req->key && req->key_len) {
2239 wk->probe_auth.key_len = req->key_len; 2245 wk->probe_auth.key_len = req->key_len;
2240 wk->probe_auth.key_idx = req->key_idx; 2246 wk->probe_auth.key_idx = req->key_idx;
2241 memcpy(wk->probe_auth.key, req->key, req->key_len); 2247 memcpy(wk->probe_auth.key, req->key, req->key_len);
2242 } 2248 }
2243 2249
2244 ssid = ieee80211_bss_get_ie(req->bss, WLAN_EID_SSID); 2250 ssid = ieee80211_bss_get_ie(req->bss, WLAN_EID_SSID);
2245 memcpy(wk->probe_auth.ssid, ssid + 2, ssid[1]); 2251 memcpy(wk->probe_auth.ssid, ssid + 2, ssid[1]);
2246 wk->probe_auth.ssid_len = ssid[1]; 2252 wk->probe_auth.ssid_len = ssid[1];
2247 2253
2248 wk->probe_auth.algorithm = auth_alg; 2254 wk->probe_auth.algorithm = auth_alg;
2249 wk->probe_auth.privacy = req->bss->capability & WLAN_CAPABILITY_PRIVACY; 2255 wk->probe_auth.privacy = req->bss->capability & WLAN_CAPABILITY_PRIVACY;
2250 2256
2251 /* if we already have a probe, don't probe again */ 2257 /* if we already have a probe, don't probe again */
2252 if (req->bss->proberesp_ies) 2258 if (req->bss->proberesp_ies)
2253 wk->type = IEEE80211_WORK_AUTH; 2259 wk->type = IEEE80211_WORK_AUTH;
2254 else 2260 else
2255 wk->type = IEEE80211_WORK_DIRECT_PROBE; 2261 wk->type = IEEE80211_WORK_DIRECT_PROBE;
2256 wk->chan = req->bss->channel; 2262 wk->chan = req->bss->channel;
2257 wk->sdata = sdata; 2263 wk->sdata = sdata;
2258 wk->done = ieee80211_probe_auth_done; 2264 wk->done = ieee80211_probe_auth_done;
2259 2265
2260 ieee80211_add_work(wk); 2266 ieee80211_add_work(wk);
2261 return 0; 2267 return 0;
2262 } 2268 }
2263 2269
2264 static enum work_done_result ieee80211_assoc_done(struct ieee80211_work *wk, 2270 static enum work_done_result ieee80211_assoc_done(struct ieee80211_work *wk,
2265 struct sk_buff *skb) 2271 struct sk_buff *skb)
2266 { 2272 {
2267 struct ieee80211_mgmt *mgmt; 2273 struct ieee80211_mgmt *mgmt;
2268 struct ieee80211_rx_status *rx_status; 2274 struct ieee80211_rx_status *rx_status;
2269 struct ieee802_11_elems elems; 2275 struct ieee802_11_elems elems;
2270 u16 status; 2276 u16 status;
2271 2277
2272 if (!skb) { 2278 if (!skb) {
2273 cfg80211_send_assoc_timeout(wk->sdata->dev, wk->filter_ta); 2279 cfg80211_send_assoc_timeout(wk->sdata->dev, wk->filter_ta);
2274 return WORK_DONE_DESTROY; 2280 return WORK_DONE_DESTROY;
2275 } 2281 }
2276 2282
2277 if (wk->type == IEEE80211_WORK_ASSOC_BEACON_WAIT) { 2283 if (wk->type == IEEE80211_WORK_ASSOC_BEACON_WAIT) {
2278 mutex_lock(&wk->sdata->u.mgd.mtx); 2284 mutex_lock(&wk->sdata->u.mgd.mtx);
2279 rx_status = (void *) skb->cb; 2285 rx_status = (void *) skb->cb;
2280 ieee802_11_parse_elems(skb->data + 24 + 12, skb->len - 24 - 12, &elems); 2286 ieee802_11_parse_elems(skb->data + 24 + 12, skb->len - 24 - 12, &elems);
2281 ieee80211_rx_bss_info(wk->sdata, (void *)skb->data, skb->len, rx_status, 2287 ieee80211_rx_bss_info(wk->sdata, (void *)skb->data, skb->len, rx_status,
2282 &elems, true); 2288 &elems, true);
2283 mutex_unlock(&wk->sdata->u.mgd.mtx); 2289 mutex_unlock(&wk->sdata->u.mgd.mtx);
2284 2290
2285 wk->type = IEEE80211_WORK_ASSOC; 2291 wk->type = IEEE80211_WORK_ASSOC;
2286 /* not really done yet */ 2292 /* not really done yet */
2287 return WORK_DONE_REQUEUE; 2293 return WORK_DONE_REQUEUE;
2288 } 2294 }
2289 2295
2290 mgmt = (void *)skb->data; 2296 mgmt = (void *)skb->data;
2291 status = le16_to_cpu(mgmt->u.assoc_resp.status_code); 2297 status = le16_to_cpu(mgmt->u.assoc_resp.status_code);
2292 2298
2293 if (status == WLAN_STATUS_SUCCESS) { 2299 if (status == WLAN_STATUS_SUCCESS) {
2294 mutex_lock(&wk->sdata->u.mgd.mtx); 2300 mutex_lock(&wk->sdata->u.mgd.mtx);
2295 if (!ieee80211_assoc_success(wk, mgmt, skb->len)) { 2301 if (!ieee80211_assoc_success(wk, mgmt, skb->len)) {
2296 mutex_unlock(&wk->sdata->u.mgd.mtx); 2302 mutex_unlock(&wk->sdata->u.mgd.mtx);
2297 /* oops -- internal error -- send timeout for now */ 2303 /* oops -- internal error -- send timeout for now */
2298 cfg80211_send_assoc_timeout(wk->sdata->dev, 2304 cfg80211_send_assoc_timeout(wk->sdata->dev,
2299 wk->filter_ta); 2305 wk->filter_ta);
2300 return WORK_DONE_DESTROY; 2306 return WORK_DONE_DESTROY;
2301 } 2307 }
2302 2308
2303 mutex_unlock(&wk->sdata->u.mgd.mtx); 2309 mutex_unlock(&wk->sdata->u.mgd.mtx);
2304 } 2310 }
2305 2311
2306 cfg80211_send_rx_assoc(wk->sdata->dev, skb->data, skb->len); 2312 cfg80211_send_rx_assoc(wk->sdata->dev, skb->data, skb->len);
2307 return WORK_DONE_DESTROY; 2313 return WORK_DONE_DESTROY;
2308 } 2314 }
2309 2315
2310 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata, 2316 int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
2311 struct cfg80211_assoc_request *req) 2317 struct cfg80211_assoc_request *req)
2312 { 2318 {
2313 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 2319 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2314 struct ieee80211_bss *bss = (void *)req->bss->priv; 2320 struct ieee80211_bss *bss = (void *)req->bss->priv;
2315 struct ieee80211_work *wk; 2321 struct ieee80211_work *wk;
2316 const u8 *ssid; 2322 const u8 *ssid;
2317 int i; 2323 int i;
2318 2324
2319 mutex_lock(&ifmgd->mtx); 2325 mutex_lock(&ifmgd->mtx);
2320 if (ifmgd->associated) { 2326 if (ifmgd->associated) {
2321 if (!req->prev_bssid || 2327 if (!req->prev_bssid ||
2322 memcmp(req->prev_bssid, ifmgd->associated->bssid, 2328 memcmp(req->prev_bssid, ifmgd->associated->bssid,
2323 ETH_ALEN)) { 2329 ETH_ALEN)) {
2324 /* 2330 /*
2325 * We are already associated and the request was not a 2331 * We are already associated and the request was not a
2326 * reassociation request from the current BSS, so 2332 * reassociation request from the current BSS, so
2327 * reject it. 2333 * reject it.
2328 */ 2334 */
2329 mutex_unlock(&ifmgd->mtx); 2335 mutex_unlock(&ifmgd->mtx);
2330 return -EALREADY; 2336 return -EALREADY;
2331 } 2337 }
2332 2338
2333 /* Trying to reassociate - clear previous association state */ 2339 /* Trying to reassociate - clear previous association state */
2334 ieee80211_set_disassoc(sdata, true, false); 2340 ieee80211_set_disassoc(sdata, true, false);
2335 } 2341 }
2336 mutex_unlock(&ifmgd->mtx); 2342 mutex_unlock(&ifmgd->mtx);
2337 2343
2338 wk = kzalloc(sizeof(*wk) + req->ie_len, GFP_KERNEL); 2344 wk = kzalloc(sizeof(*wk) + req->ie_len, GFP_KERNEL);
2339 if (!wk) 2345 if (!wk)
2340 return -ENOMEM; 2346 return -ENOMEM;
2341 2347
2342 ifmgd->flags &= ~IEEE80211_STA_DISABLE_11N; 2348 ifmgd->flags &= ~IEEE80211_STA_DISABLE_11N;
2343 ifmgd->flags &= ~IEEE80211_STA_NULLFUNC_ACKED; 2349 ifmgd->flags &= ~IEEE80211_STA_NULLFUNC_ACKED;
2344 2350
2345 ifmgd->beacon_crc_valid = false; 2351 ifmgd->beacon_crc_valid = false;
2346 2352
2347 for (i = 0; i < req->crypto.n_ciphers_pairwise; i++) 2353 for (i = 0; i < req->crypto.n_ciphers_pairwise; i++)
2348 if (req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP40 || 2354 if (req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP40 ||
2349 req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_TKIP || 2355 req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_TKIP ||
2350 req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP104) 2356 req->crypto.ciphers_pairwise[i] == WLAN_CIPHER_SUITE_WEP104)
2351 ifmgd->flags |= IEEE80211_STA_DISABLE_11N; 2357 ifmgd->flags |= IEEE80211_STA_DISABLE_11N;
2352 2358
2353 2359
2354 if (req->ie && req->ie_len) { 2360 if (req->ie && req->ie_len) {
2355 memcpy(wk->ie, req->ie, req->ie_len); 2361 memcpy(wk->ie, req->ie, req->ie_len);
2356 wk->ie_len = req->ie_len; 2362 wk->ie_len = req->ie_len;
2357 } else 2363 } else
2358 wk->ie_len = 0; 2364 wk->ie_len = 0;
2359 2365
2360 wk->assoc.bss = req->bss; 2366 wk->assoc.bss = req->bss;
2361 2367
2362 memcpy(wk->filter_ta, req->bss->bssid, ETH_ALEN); 2368 memcpy(wk->filter_ta, req->bss->bssid, ETH_ALEN);
2363 2369
2364 /* new association always uses requested smps mode */ 2370 /* new association always uses requested smps mode */
2365 if (ifmgd->req_smps == IEEE80211_SMPS_AUTOMATIC) { 2371 if (ifmgd->req_smps == IEEE80211_SMPS_AUTOMATIC) {
2366 if (ifmgd->powersave) 2372 if (ifmgd->powersave)
2367 ifmgd->ap_smps = IEEE80211_SMPS_DYNAMIC; 2373 ifmgd->ap_smps = IEEE80211_SMPS_DYNAMIC;
2368 else 2374 else
2369 ifmgd->ap_smps = IEEE80211_SMPS_OFF; 2375 ifmgd->ap_smps = IEEE80211_SMPS_OFF;
2370 } else 2376 } else
2371 ifmgd->ap_smps = ifmgd->req_smps; 2377 ifmgd->ap_smps = ifmgd->req_smps;
2372 2378
2373 wk->assoc.smps = ifmgd->ap_smps; 2379 wk->assoc.smps = ifmgd->ap_smps;
2374 /* 2380 /*
2375 * IEEE802.11n does not allow TKIP/WEP as pairwise ciphers in HT mode. 2381 * IEEE802.11n does not allow TKIP/WEP as pairwise ciphers in HT mode.
2376 * We still associate in non-HT mode (11a/b/g) if any one of these 2382 * We still associate in non-HT mode (11a/b/g) if any one of these
2377 * ciphers is configured as pairwise. 2383 * ciphers is configured as pairwise.
2378 * We can set this to true for non-11n hardware, that'll be checked 2384 * We can set this to true for non-11n hardware, that'll be checked
2379 * separately along with the peer capabilities. 2385 * separately along with the peer capabilities.
2380 */ 2386 */
2381 wk->assoc.use_11n = !(ifmgd->flags & IEEE80211_STA_DISABLE_11N); 2387 wk->assoc.use_11n = !(ifmgd->flags & IEEE80211_STA_DISABLE_11N);
2382 wk->assoc.capability = req->bss->capability; 2388 wk->assoc.capability = req->bss->capability;
2383 wk->assoc.wmm_used = bss->wmm_used; 2389 wk->assoc.wmm_used = bss->wmm_used;
2384 wk->assoc.supp_rates = bss->supp_rates; 2390 wk->assoc.supp_rates = bss->supp_rates;
2385 wk->assoc.supp_rates_len = bss->supp_rates_len; 2391 wk->assoc.supp_rates_len = bss->supp_rates_len;
2386 wk->assoc.ht_information_ie = 2392 wk->assoc.ht_information_ie =
2387 ieee80211_bss_get_ie(req->bss, WLAN_EID_HT_INFORMATION); 2393 ieee80211_bss_get_ie(req->bss, WLAN_EID_HT_INFORMATION);
2388 2394
2389 if (bss->wmm_used && bss->uapsd_supported && 2395 if (bss->wmm_used && bss->uapsd_supported &&
2390 (sdata->local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD)) { 2396 (sdata->local->hw.flags & IEEE80211_HW_SUPPORTS_UAPSD)) {
2391 wk->assoc.uapsd_used = true; 2397 wk->assoc.uapsd_used = true;
2392 ifmgd->flags |= IEEE80211_STA_UAPSD_ENABLED; 2398 ifmgd->flags |= IEEE80211_STA_UAPSD_ENABLED;
2393 } else { 2399 } else {
2394 wk->assoc.uapsd_used = false; 2400 wk->assoc.uapsd_used = false;
2395 ifmgd->flags &= ~IEEE80211_STA_UAPSD_ENABLED; 2401 ifmgd->flags &= ~IEEE80211_STA_UAPSD_ENABLED;
2396 } 2402 }
2397 2403
2398 ssid = ieee80211_bss_get_ie(req->bss, WLAN_EID_SSID); 2404 ssid = ieee80211_bss_get_ie(req->bss, WLAN_EID_SSID);
2399 memcpy(wk->assoc.ssid, ssid + 2, ssid[1]); 2405 memcpy(wk->assoc.ssid, ssid + 2, ssid[1]);
2400 wk->assoc.ssid_len = ssid[1]; 2406 wk->assoc.ssid_len = ssid[1];
2401 2407
2402 if (req->prev_bssid) 2408 if (req->prev_bssid)
2403 memcpy(wk->assoc.prev_bssid, req->prev_bssid, ETH_ALEN); 2409 memcpy(wk->assoc.prev_bssid, req->prev_bssid, ETH_ALEN);
2404 2410
2405 wk->chan = req->bss->channel; 2411 wk->chan = req->bss->channel;
2406 wk->sdata = sdata; 2412 wk->sdata = sdata;
2407 wk->done = ieee80211_assoc_done; 2413 wk->done = ieee80211_assoc_done;
2408 if (!bss->dtim_period && 2414 if (!bss->dtim_period &&
2409 sdata->local->hw.flags & IEEE80211_HW_NEED_DTIM_PERIOD) 2415 sdata->local->hw.flags & IEEE80211_HW_NEED_DTIM_PERIOD)
2410 wk->type = IEEE80211_WORK_ASSOC_BEACON_WAIT; 2416 wk->type = IEEE80211_WORK_ASSOC_BEACON_WAIT;
2411 else 2417 else
2412 wk->type = IEEE80211_WORK_ASSOC; 2418 wk->type = IEEE80211_WORK_ASSOC;
2413 2419
2414 if (req->use_mfp) { 2420 if (req->use_mfp) {
2415 ifmgd->mfp = IEEE80211_MFP_REQUIRED; 2421 ifmgd->mfp = IEEE80211_MFP_REQUIRED;
2416 ifmgd->flags |= IEEE80211_STA_MFP_ENABLED; 2422 ifmgd->flags |= IEEE80211_STA_MFP_ENABLED;
2417 } else { 2423 } else {
2418 ifmgd->mfp = IEEE80211_MFP_DISABLED; 2424 ifmgd->mfp = IEEE80211_MFP_DISABLED;
2419 ifmgd->flags &= ~IEEE80211_STA_MFP_ENABLED; 2425 ifmgd->flags &= ~IEEE80211_STA_MFP_ENABLED;
2420 } 2426 }
2421 2427
2422 if (req->crypto.control_port) 2428 if (req->crypto.control_port)
2423 ifmgd->flags |= IEEE80211_STA_CONTROL_PORT; 2429 ifmgd->flags |= IEEE80211_STA_CONTROL_PORT;
2424 else 2430 else
2425 ifmgd->flags &= ~IEEE80211_STA_CONTROL_PORT; 2431 ifmgd->flags &= ~IEEE80211_STA_CONTROL_PORT;
2426 2432
2427 sdata->control_port_protocol = req->crypto.control_port_ethertype; 2433 sdata->control_port_protocol = req->crypto.control_port_ethertype;
2428 sdata->control_port_no_encrypt = req->crypto.control_port_no_encrypt; 2434 sdata->control_port_no_encrypt = req->crypto.control_port_no_encrypt;
2429 2435
2430 ieee80211_add_work(wk); 2436 ieee80211_add_work(wk);
2431 return 0; 2437 return 0;
2432 } 2438 }
2433 2439
2434 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata, 2440 int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
2435 struct cfg80211_deauth_request *req, 2441 struct cfg80211_deauth_request *req,
2436 void *cookie) 2442 void *cookie)
2437 { 2443 {
2438 struct ieee80211_local *local = sdata->local; 2444 struct ieee80211_local *local = sdata->local;
2439 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 2445 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2440 struct ieee80211_work *wk; 2446 struct ieee80211_work *wk;
2441 u8 bssid[ETH_ALEN]; 2447 u8 bssid[ETH_ALEN];
2442 bool assoc_bss = false; 2448 bool assoc_bss = false;
2443 2449
2444 mutex_lock(&ifmgd->mtx); 2450 mutex_lock(&ifmgd->mtx);
2445 2451
2446 memcpy(bssid, req->bss->bssid, ETH_ALEN); 2452 memcpy(bssid, req->bss->bssid, ETH_ALEN);
2447 if (ifmgd->associated == req->bss) { 2453 if (ifmgd->associated == req->bss) {
2448 ieee80211_set_disassoc(sdata, false, true); 2454 ieee80211_set_disassoc(sdata, false, true);
2449 mutex_unlock(&ifmgd->mtx); 2455 mutex_unlock(&ifmgd->mtx);
2450 assoc_bss = true; 2456 assoc_bss = true;
2451 } else { 2457 } else {
2452 bool not_auth_yet = false; 2458 bool not_auth_yet = false;
2453 2459
2454 mutex_unlock(&ifmgd->mtx); 2460 mutex_unlock(&ifmgd->mtx);
2455 2461
2456 mutex_lock(&local->mtx); 2462 mutex_lock(&local->mtx);
2457 list_for_each_entry(wk, &local->work_list, list) { 2463 list_for_each_entry(wk, &local->work_list, list) {
2458 if (wk->sdata != sdata) 2464 if (wk->sdata != sdata)
2459 continue; 2465 continue;
2460 2466
2461 if (wk->type != IEEE80211_WORK_DIRECT_PROBE && 2467 if (wk->type != IEEE80211_WORK_DIRECT_PROBE &&
2462 wk->type != IEEE80211_WORK_AUTH && 2468 wk->type != IEEE80211_WORK_AUTH &&
2463 wk->type != IEEE80211_WORK_ASSOC && 2469 wk->type != IEEE80211_WORK_ASSOC &&
2464 wk->type != IEEE80211_WORK_ASSOC_BEACON_WAIT) 2470 wk->type != IEEE80211_WORK_ASSOC_BEACON_WAIT)
2465 continue; 2471 continue;
2466 2472
2467 if (memcmp(req->bss->bssid, wk->filter_ta, ETH_ALEN)) 2473 if (memcmp(req->bss->bssid, wk->filter_ta, ETH_ALEN))
2468 continue; 2474 continue;
2469 2475
2470 not_auth_yet = wk->type == IEEE80211_WORK_DIRECT_PROBE; 2476 not_auth_yet = wk->type == IEEE80211_WORK_DIRECT_PROBE;
2471 list_del_rcu(&wk->list); 2477 list_del_rcu(&wk->list);
2472 free_work(wk); 2478 free_work(wk);
2473 break; 2479 break;
2474 } 2480 }
2475 mutex_unlock(&local->mtx); 2481 mutex_unlock(&local->mtx);
2476 2482
2477 /* 2483 /*
2478 * If somebody requests authentication and we haven't 2484 * If somebody requests authentication and we haven't
2479 * sent out an auth frame yet there's no need to send 2485 * sent out an auth frame yet there's no need to send
2480 * out a deauth frame either. If the state was PROBE, 2486 * out a deauth frame either. If the state was PROBE,
2481 * then this is the case. If it's AUTH we have sent a 2487 * then this is the case. If it's AUTH we have sent a
2482 * frame, and if it's IDLE we have completed the auth 2488 * frame, and if it's IDLE we have completed the auth
2483 * process already. 2489 * process already.
2484 */ 2490 */
2485 if (not_auth_yet) { 2491 if (not_auth_yet) {
2486 __cfg80211_auth_canceled(sdata->dev, bssid); 2492 __cfg80211_auth_canceled(sdata->dev, bssid);
2487 return 0; 2493 return 0;
2488 } 2494 }
2489 } 2495 }
2490 2496
2491 printk(KERN_DEBUG "%s: deauthenticating from %pM by local choice (reason=%d)\n", 2497 printk(KERN_DEBUG "%s: deauthenticating from %pM by local choice (reason=%d)\n",
2492 sdata->name, bssid, req->reason_code); 2498 sdata->name, bssid, req->reason_code);
2493 2499
2494 ieee80211_send_deauth_disassoc(sdata, bssid, IEEE80211_STYPE_DEAUTH, 2500 ieee80211_send_deauth_disassoc(sdata, bssid, IEEE80211_STYPE_DEAUTH,
2495 req->reason_code, cookie, 2501 req->reason_code, cookie,
2496 !req->local_state_change); 2502 !req->local_state_change);
2497 if (assoc_bss) 2503 if (assoc_bss)
2498 sta_info_destroy_addr(sdata, bssid); 2504 sta_info_destroy_addr(sdata, bssid);
2499 2505
2500 mutex_lock(&sdata->local->mtx); 2506 mutex_lock(&sdata->local->mtx);
2501 ieee80211_recalc_idle(sdata->local); 2507 ieee80211_recalc_idle(sdata->local);
2502 mutex_unlock(&sdata->local->mtx); 2508 mutex_unlock(&sdata->local->mtx);
2503 2509
2504 return 0; 2510 return 0;
2505 } 2511 }
2506 2512
2507 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata, 2513 int ieee80211_mgd_disassoc(struct ieee80211_sub_if_data *sdata,
2508 struct cfg80211_disassoc_request *req, 2514 struct cfg80211_disassoc_request *req,
2509 void *cookie) 2515 void *cookie)
2510 { 2516 {
2511 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd; 2517 struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
2512 u8 bssid[ETH_ALEN]; 2518 u8 bssid[ETH_ALEN];
2513 2519
2514 mutex_lock(&ifmgd->mtx); 2520 mutex_lock(&ifmgd->mtx);
2515 2521
2516 /* 2522 /*
2517 * cfg80211 should catch this ... but it's racy since 2523 * cfg80211 should catch this ... but it's racy since
2518 * we can receive a disassoc frame, process it, hand it 2524 * we can receive a disassoc frame, process it, hand it
2519 * to cfg80211 while that's in a locked section already 2525 * to cfg80211 while that's in a locked section already
2520 * trying to tell us that the user wants to disconnect. 2526 * trying to tell us that the user wants to disconnect.
2521 */ 2527 */
2522 if (ifmgd->associated != req->bss) { 2528 if (ifmgd->associated != req->bss) {
2523 mutex_unlock(&ifmgd->mtx); 2529 mutex_unlock(&ifmgd->mtx);
2524 return -ENOLINK; 2530 return -ENOLINK;
2525 } 2531 }
2526 2532
2527 printk(KERN_DEBUG "%s: disassociating from %pM by local choice (reason=%d)\n", 2533 printk(KERN_DEBUG "%s: disassociating from %pM by local choice (reason=%d)\n",
2528 sdata->name, req->bss->bssid, req->reason_code); 2534 sdata->name, req->bss->bssid, req->reason_code);
2529 2535
2530 memcpy(bssid, req->bss->bssid, ETH_ALEN); 2536 memcpy(bssid, req->bss->bssid, ETH_ALEN);
2531 ieee80211_set_disassoc(sdata, false, true); 2537 ieee80211_set_disassoc(sdata, false, true);
2532 2538
2533 mutex_unlock(&ifmgd->mtx); 2539 mutex_unlock(&ifmgd->mtx);
2534 2540
2535 ieee80211_send_deauth_disassoc(sdata, req->bss->bssid, 2541 ieee80211_send_deauth_disassoc(sdata, req->bss->bssid,
2536 IEEE80211_STYPE_DISASSOC, req->reason_code, 2542 IEEE80211_STYPE_DISASSOC, req->reason_code,
2537 cookie, !req->local_state_change); 2543 cookie, !req->local_state_change);
2538 sta_info_destroy_addr(sdata, bssid); 2544 sta_info_destroy_addr(sdata, bssid);
2539 2545
2540 mutex_lock(&sdata->local->mtx); 2546 mutex_lock(&sdata->local->mtx);
2541 ieee80211_recalc_idle(sdata->local); 2547 ieee80211_recalc_idle(sdata->local);
2542 mutex_unlock(&sdata->local->mtx); 2548 mutex_unlock(&sdata->local->mtx);
2543 2549
2544 return 0; 2550 return 0;
2545 } 2551 }
2546 2552
2547 void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif, 2553 void ieee80211_cqm_rssi_notify(struct ieee80211_vif *vif,
2548 enum nl80211_cqm_rssi_threshold_event rssi_event, 2554 enum nl80211_cqm_rssi_threshold_event rssi_event,
2549 gfp_t gfp) 2555 gfp_t gfp)
2550 { 2556 {
2551 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif); 2557 struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2552 2558
2553 trace_api_cqm_rssi_notify(sdata, rssi_event); 2559 trace_api_cqm_rssi_notify(sdata, rssi_event);
2554 2560
2555 cfg80211_cqm_rssi_notify(sdata->dev, rssi_event, gfp); 2561 cfg80211_cqm_rssi_notify(sdata->dev, rssi_event, gfp);
2556 } 2562 }
2557 EXPORT_SYMBOL(ieee80211_cqm_rssi_notify); 2563 EXPORT_SYMBOL(ieee80211_cqm_rssi_notify);
2558 2564