Commit | Line | Data |
---|---|---|
c3896d2c | 1 | /* |
264d9b7d | 2 | * Copyright (c) 2008, 2009 open80211s Ltd. |
c3896d2c LCC |
3 | * Author: Luis Carlos Cobo <luisca@cozybit.com> |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License version 2 as | |
7 | * published by the Free Software Foundation. | |
8 | */ | |
5a0e3ad6 | 9 | #include <linux/gfp.h> |
902acc78 JB |
10 | #include <linux/kernel.h> |
11 | #include <linux/random.h> | |
c3896d2c | 12 | #include "ieee80211_i.h" |
2c8dccc7 | 13 | #include "rate.h" |
c3896d2c | 14 | #include "mesh.h" |
c3896d2c LCC |
15 | |
16 | #ifdef CONFIG_MAC80211_VERBOSE_MPL_DEBUG | |
f0d23208 | 17 | #define mpl_dbg(fmt, args...) pr_debug(fmt, ##args) |
c3896d2c LCC |
18 | #else |
19 | #define mpl_dbg(fmt, args...) do { (void)(0); } while (0) | |
20 | #endif | |
21 | ||
8db09850 TP |
22 | #define PLINK_GET_LLID(p) (p + 2) |
23 | #define PLINK_GET_PLID(p) (p + 4) | |
c3896d2c LCC |
24 | |
25 | #define mod_plink_timer(s, t) (mod_timer(&s->plink_timer, \ | |
26 | jiffies + HZ * t / 1000)) | |
27 | ||
472dbc45 JB |
28 | #define dot11MeshMaxRetries(s) (s->u.mesh.mshcfg.dot11MeshMaxRetries) |
29 | #define dot11MeshRetryTimeout(s) (s->u.mesh.mshcfg.dot11MeshRetryTimeout) | |
30 | #define dot11MeshConfirmTimeout(s) (s->u.mesh.mshcfg.dot11MeshConfirmTimeout) | |
31 | #define dot11MeshHoldingTimeout(s) (s->u.mesh.mshcfg.dot11MeshHoldingTimeout) | |
32 | #define dot11MeshMaxPeerLinks(s) (s->u.mesh.mshcfg.dot11MeshMaxPeerLinks) | |
c3896d2c | 33 | |
3d4f9699 AN |
34 | /* We only need a valid sta if user configured a minimum rssi_threshold. */ |
35 | #define rssi_threshold_check(sta, sdata) \ | |
55335137 | 36 | (sdata->u.mesh.mshcfg.rssi_threshold == 0 ||\ |
3d4f9699 AN |
37 | (sta && (s8) -ewma_read(&sta->avg_signal) > \ |
38 | sdata->u.mesh.mshcfg.rssi_threshold)) | |
55335137 | 39 | |
c3896d2c LCC |
40 | enum plink_event { |
41 | PLINK_UNDEFINED, | |
42 | OPN_ACPT, | |
43 | OPN_RJCT, | |
44 | OPN_IGNR, | |
45 | CNF_ACPT, | |
46 | CNF_RJCT, | |
47 | CNF_IGNR, | |
48 | CLS_ACPT, | |
49 | CLS_IGNR | |
50 | }; | |
51 | ||
ba4a14e1 TP |
52 | static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata, |
53 | enum ieee80211_self_protected_actioncode action, | |
54 | u8 *da, __le16 llid, __le16 plid, __le16 reason); | |
55 | ||
c3896d2c LCC |
56 | static inline |
57 | void mesh_plink_inc_estab_count(struct ieee80211_sub_if_data *sdata) | |
58 | { | |
472dbc45 | 59 | atomic_inc(&sdata->u.mesh.mshstats.estab_plinks); |
d0709a65 | 60 | mesh_accept_plinks_update(sdata); |
c3896d2c LCC |
61 | } |
62 | ||
63 | static inline | |
64 | void mesh_plink_dec_estab_count(struct ieee80211_sub_if_data *sdata) | |
65 | { | |
472dbc45 | 66 | atomic_dec(&sdata->u.mesh.mshstats.estab_plinks); |
d0709a65 | 67 | mesh_accept_plinks_update(sdata); |
c3896d2c LCC |
68 | } |
69 | ||
70 | /** | |
71 | * mesh_plink_fsm_restart - restart a mesh peer link finite state machine | |
72 | * | |
23c7a29c | 73 | * @sta: mesh peer link to restart |
c3896d2c | 74 | * |
07346f81 | 75 | * Locking: this function must be called holding sta->lock |
c3896d2c LCC |
76 | */ |
77 | static inline void mesh_plink_fsm_restart(struct sta_info *sta) | |
78 | { | |
57cf8043 | 79 | sta->plink_state = NL80211_PLINK_LISTEN; |
37659ff8 LCC |
80 | sta->llid = sta->plid = sta->reason = 0; |
81 | sta->plink_retries = 0; | |
c3896d2c LCC |
82 | } |
83 | ||
93e5deb1 | 84 | /* |
54ab1ffb | 85 | * Allocate mesh sta entry and insert into station table |
93e5deb1 | 86 | */ |
03e4497e | 87 | static struct sta_info *mesh_plink_alloc(struct ieee80211_sub_if_data *sdata, |
54ab1ffb | 88 | u8 *hw_addr) |
c3896d2c | 89 | { |
c3896d2c LCC |
90 | struct sta_info *sta; |
91 | ||
54ab1ffb | 92 | if (sdata->local->num_sta >= MESH_MAX_PLINKS) |
73651ee6 | 93 | return NULL; |
c3896d2c | 94 | |
34e89507 | 95 | sta = sta_info_alloc(sdata, hw_addr, GFP_KERNEL); |
73651ee6 JB |
96 | if (!sta) |
97 | return NULL; | |
c3896d2c | 98 | |
83d5cc01 JB |
99 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); |
100 | sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); | |
101 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTHORIZED); | |
d9a7ddb0 | 102 | |
c2c98fde | 103 | set_sta_flag(sta, WLAN_STA_WME); |
d9a7ddb0 | 104 | |
c3896d2c LCC |
105 | return sta; |
106 | } | |
107 | ||
cbf9322e AN |
108 | /* |
109 | * mesh_set_ht_prot_mode - set correct HT protection mode | |
57aac7c5 | 110 | * |
cbf9322e AN |
111 | * Section 9.23.3.5 of IEEE 80211-2012 describes the protection rules for HT |
112 | * mesh STA in a MBSS. Three HT protection modes are supported for now, non-HT | |
113 | * mixed mode, 20MHz-protection and no-protection mode. non-HT mixed mode is | |
114 | * selected if any non-HT peers are present in our MBSS. 20MHz-protection mode | |
115 | * is selected if all peers in our 20/40MHz MBSS support HT and atleast one | |
116 | * HT20 peer is present. Otherwise no-protection mode is selected. | |
57aac7c5 AN |
117 | */ |
118 | static u32 mesh_set_ht_prot_mode(struct ieee80211_sub_if_data *sdata) | |
119 | { | |
120 | struct ieee80211_local *local = sdata->local; | |
121 | struct sta_info *sta; | |
122 | u32 changed = 0; | |
123 | u16 ht_opmode; | |
124 | bool non_ht_sta = false, ht20_sta = false; | |
125 | ||
126 | if (local->_oper_channel_type == NL80211_CHAN_NO_HT) | |
127 | return 0; | |
128 | ||
129 | rcu_read_lock(); | |
130 | list_for_each_entry_rcu(sta, &local->sta_list, list) { | |
cbf9322e AN |
131 | if (sdata != sta->sdata || |
132 | sta->plink_state != NL80211_PLINK_ESTAB) | |
133 | continue; | |
134 | ||
135 | switch (sta->ch_type) { | |
136 | case NL80211_CHAN_NO_HT: | |
137 | mpl_dbg("mesh_plink %pM: nonHT sta (%pM) is present", | |
138 | sdata->vif.addr, sta->sta.addr); | |
139 | non_ht_sta = true; | |
140 | goto out; | |
141 | case NL80211_CHAN_HT20: | |
142 | mpl_dbg("mesh_plink %pM: HT20 sta (%pM) is present", | |
143 | sdata->vif.addr, sta->sta.addr); | |
144 | ht20_sta = true; | |
145 | default: | |
146 | break; | |
57aac7c5 AN |
147 | } |
148 | } | |
149 | out: | |
150 | rcu_read_unlock(); | |
151 | ||
152 | if (non_ht_sta) | |
153 | ht_opmode = IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED; | |
154 | else if (ht20_sta && local->_oper_channel_type > NL80211_CHAN_HT20) | |
155 | ht_opmode = IEEE80211_HT_OP_MODE_PROTECTION_20MHZ; | |
156 | else | |
157 | ht_opmode = IEEE80211_HT_OP_MODE_PROTECTION_NONE; | |
158 | ||
159 | if (sdata->vif.bss_conf.ht_operation_mode != ht_opmode) { | |
160 | sdata->vif.bss_conf.ht_operation_mode = ht_opmode; | |
70c33eaa | 161 | sdata->u.mesh.mshcfg.ht_opmode = ht_opmode; |
57aac7c5 AN |
162 | changed = BSS_CHANGED_HT; |
163 | mpl_dbg("mesh_plink %pM: protection mode changed to %d", | |
164 | sdata->vif.addr, ht_opmode); | |
165 | } | |
166 | ||
167 | return changed; | |
168 | } | |
169 | ||
c3896d2c | 170 | /** |
c9370197 | 171 | * __mesh_plink_deactivate - deactivate mesh peer link |
c3896d2c LCC |
172 | * |
173 | * @sta: mesh peer link to deactivate | |
174 | * | |
175 | * All mesh paths with this peer as next hop will be flushed | |
176 | * | |
07346f81 | 177 | * Locking: the caller must hold sta->lock |
c3896d2c | 178 | */ |
c9370197 | 179 | static bool __mesh_plink_deactivate(struct sta_info *sta) |
c3896d2c | 180 | { |
d0709a65 | 181 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
c9370197 | 182 | bool deactivated = false; |
d0709a65 | 183 | |
57cf8043 | 184 | if (sta->plink_state == NL80211_PLINK_ESTAB) { |
c3896d2c | 185 | mesh_plink_dec_estab_count(sdata); |
c9370197 JL |
186 | deactivated = true; |
187 | } | |
57cf8043 | 188 | sta->plink_state = NL80211_PLINK_BLOCKED; |
c3896d2c | 189 | mesh_path_flush_by_nexthop(sta); |
c9370197 JL |
190 | |
191 | return deactivated; | |
c3896d2c LCC |
192 | } |
193 | ||
902acc78 | 194 | /** |
c9370197 | 195 | * mesh_plink_deactivate - deactivate mesh peer link |
902acc78 JB |
196 | * |
197 | * @sta: mesh peer link to deactivate | |
198 | * | |
199 | * All mesh paths with this peer as next hop will be flushed | |
200 | */ | |
201 | void mesh_plink_deactivate(struct sta_info *sta) | |
202 | { | |
c9370197 JL |
203 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
204 | bool deactivated; | |
205 | ||
07346f81 | 206 | spin_lock_bh(&sta->lock); |
c9370197 | 207 | deactivated = __mesh_plink_deactivate(sta); |
ba4a14e1 TP |
208 | sta->reason = cpu_to_le16(WLAN_REASON_MESH_PEER_CANCELED); |
209 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, | |
210 | sta->sta.addr, sta->llid, sta->plid, | |
211 | sta->reason); | |
07346f81 | 212 | spin_unlock_bh(&sta->lock); |
c9370197 JL |
213 | |
214 | if (deactivated) | |
215 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON); | |
902acc78 JB |
216 | } |
217 | ||
f698d856 | 218 | static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata, |
54ef656b TP |
219 | enum ieee80211_self_protected_actioncode action, |
220 | u8 *da, __le16 llid, __le16 plid, __le16 reason) { | |
f698d856 | 221 | struct ieee80211_local *local = sdata->local; |
3b69a9c5 | 222 | struct sk_buff *skb; |
c3896d2c LCC |
223 | struct ieee80211_mgmt *mgmt; |
224 | bool include_plid = false; | |
8db09850 | 225 | u16 peering_proto = 0; |
3b69a9c5 TP |
226 | u8 *pos, ie_len = 4; |
227 | int hdr_len = offsetof(struct ieee80211_mgmt, u.action.u.self_prot) + | |
228 | sizeof(mgmt->u.action.u.self_prot); | |
229 | ||
65e8b0cc | 230 | skb = dev_alloc_skb(local->tx_headroom + |
3b69a9c5 TP |
231 | hdr_len + |
232 | 2 + /* capability info */ | |
233 | 2 + /* AID */ | |
234 | 2 + 8 + /* supported rates */ | |
235 | 2 + (IEEE80211_MAX_SUPP_RATES - 8) + | |
236 | 2 + sdata->u.mesh.mesh_id_len + | |
237 | 2 + sizeof(struct ieee80211_meshconf_ie) + | |
176f3608 | 238 | 2 + sizeof(struct ieee80211_ht_cap) + |
074d46d1 | 239 | 2 + sizeof(struct ieee80211_ht_operation) + |
3b69a9c5 TP |
240 | 2 + 8 + /* peering IE */ |
241 | sdata->u.mesh.ie_len); | |
c3896d2c LCC |
242 | if (!skb) |
243 | return -1; | |
65e8b0cc | 244 | skb_reserve(skb, local->tx_headroom); |
3b69a9c5 TP |
245 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, hdr_len); |
246 | memset(mgmt, 0, hdr_len); | |
e7827a70 HH |
247 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
248 | IEEE80211_STYPE_ACTION); | |
c3896d2c | 249 | memcpy(mgmt->da, da, ETH_ALEN); |
47846c9b | 250 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); |
915b5c50 | 251 | memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN); |
8db09850 TP |
252 | mgmt->u.action.category = WLAN_CATEGORY_SELF_PROTECTED; |
253 | mgmt->u.action.u.self_prot.action_code = action; | |
c3896d2c | 254 | |
8db09850 TP |
255 | if (action != WLAN_SP_MESH_PEERING_CLOSE) { |
256 | /* capability info */ | |
257 | pos = skb_put(skb, 2); | |
258 | memset(pos, 0, 2); | |
54ef656b | 259 | if (action == WLAN_SP_MESH_PEERING_CONFIRM) { |
8db09850 TP |
260 | /* AID */ |
261 | pos = skb_put(skb, 2); | |
77fa76bb | 262 | memcpy(pos + 2, &plid, 2); |
c3896d2c | 263 | } |
657c3e0c AN |
264 | if (ieee80211_add_srates_ie(&sdata->vif, skb, true) || |
265 | ieee80211_add_ext_srates_ie(&sdata->vif, skb, true) || | |
082ebb0c TP |
266 | mesh_add_rsn_ie(skb, sdata) || |
267 | mesh_add_meshid_ie(skb, sdata) || | |
268 | mesh_add_meshconf_ie(skb, sdata)) | |
269 | return -1; | |
8db09850 TP |
270 | } else { /* WLAN_SP_MESH_PEERING_CLOSE */ |
271 | if (mesh_add_meshid_ie(skb, sdata)) | |
272 | return -1; | |
c3896d2c LCC |
273 | } |
274 | ||
8db09850 | 275 | /* Add Mesh Peering Management element */ |
c3896d2c | 276 | switch (action) { |
54ef656b | 277 | case WLAN_SP_MESH_PEERING_OPEN: |
c3896d2c | 278 | break; |
54ef656b | 279 | case WLAN_SP_MESH_PEERING_CONFIRM: |
8db09850 | 280 | ie_len += 2; |
c3896d2c LCC |
281 | include_plid = true; |
282 | break; | |
54ef656b | 283 | case WLAN_SP_MESH_PEERING_CLOSE: |
8db09850 TP |
284 | if (plid) { |
285 | ie_len += 2; | |
c3896d2c LCC |
286 | include_plid = true; |
287 | } | |
8db09850 | 288 | ie_len += 2; /* reason code */ |
c3896d2c | 289 | break; |
8db09850 TP |
290 | default: |
291 | return -EINVAL; | |
c3896d2c LCC |
292 | } |
293 | ||
8db09850 TP |
294 | if (WARN_ON(skb_tailroom(skb) < 2 + ie_len)) |
295 | return -ENOMEM; | |
296 | ||
c3896d2c | 297 | pos = skb_put(skb, 2 + ie_len); |
8db09850 | 298 | *pos++ = WLAN_EID_PEER_MGMT; |
c3896d2c | 299 | *pos++ = ie_len; |
8db09850 TP |
300 | memcpy(pos, &peering_proto, 2); |
301 | pos += 2; | |
c3896d2c | 302 | memcpy(pos, &llid, 2); |
8db09850 | 303 | pos += 2; |
c3896d2c | 304 | if (include_plid) { |
c3896d2c | 305 | memcpy(pos, &plid, 2); |
8db09850 | 306 | pos += 2; |
c3896d2c | 307 | } |
54ef656b | 308 | if (action == WLAN_SP_MESH_PEERING_CLOSE) { |
c3896d2c | 309 | memcpy(pos, &reason, 2); |
8db09850 | 310 | pos += 2; |
c3896d2c | 311 | } |
176f3608 TP |
312 | |
313 | if (action != WLAN_SP_MESH_PEERING_CLOSE) { | |
314 | if (mesh_add_ht_cap_ie(skb, sdata) || | |
074d46d1 | 315 | mesh_add_ht_oper_ie(skb, sdata)) |
176f3608 TP |
316 | return -1; |
317 | } | |
318 | ||
8db09850 TP |
319 | if (mesh_add_vendor_ies(skb, sdata)) |
320 | return -1; | |
c3896d2c | 321 | |
62ae67be | 322 | ieee80211_tx_skb(sdata, skb); |
c3896d2c LCC |
323 | return 0; |
324 | } | |
325 | ||
54ab1ffb TP |
326 | /* mesh_peer_init - initialize new mesh peer and return resulting sta_info |
327 | * | |
328 | * @sdata: local meshif | |
329 | * @addr: peer's address | |
54ab1ffb TP |
330 | * @elems: IEs from beacon or mesh peering frame |
331 | * | |
332 | * call under RCU | |
333 | */ | |
334 | static struct sta_info *mesh_peer_init(struct ieee80211_sub_if_data *sdata, | |
f743ff49 | 335 | u8 *addr, |
54ab1ffb | 336 | struct ieee802_11_elems *elems) |
c3896d2c | 337 | { |
f698d856 | 338 | struct ieee80211_local *local = sdata->local; |
f743ff49 | 339 | enum ieee80211_band band = local->oper_channel->band; |
54ab1ffb | 340 | struct ieee80211_supported_band *sband; |
f743ff49 | 341 | u32 rates, basic_rates = 0; |
c3896d2c | 342 | struct sta_info *sta; |
e87278e7 | 343 | bool insert = false; |
c3896d2c | 344 | |
f743ff49 TP |
345 | sband = local->hw.wiphy->bands[band]; |
346 | rates = ieee80211_sta_get_rates(local, elems, band, &basic_rates); | |
d0709a65 | 347 | |
54ab1ffb | 348 | sta = sta_info_get(sdata, addr); |
c3896d2c | 349 | if (!sta) { |
f5c56814 TP |
350 | /* Userspace handles peer allocation when security is enabled */ |
351 | if (sdata->u.mesh.security & IEEE80211_MESH_SEC_AUTHED) { | |
352 | cfg80211_notify_new_peer_candidate(sdata->dev, addr, | |
353 | elems->ie_start, | |
354 | elems->total_len, | |
355 | GFP_ATOMIC); | |
356 | return NULL; | |
357 | } | |
358 | ||
54ab1ffb | 359 | sta = mesh_plink_alloc(sdata, addr); |
34e89507 | 360 | if (!sta) |
54ab1ffb | 361 | return NULL; |
e87278e7 | 362 | insert = true; |
c3896d2c LCC |
363 | } |
364 | ||
54ab1ffb | 365 | spin_lock_bh(&sta->lock); |
c3896d2c | 366 | sta->last_rx = jiffies; |
f743ff49 | 367 | sta->sta.supp_rates[band] = rates; |
e76781e4 TP |
368 | if (elems->ht_cap_elem && |
369 | sdata->local->_oper_channel_type != NL80211_CHAN_NO_HT) | |
54ab1ffb TP |
370 | ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, |
371 | elems->ht_cap_elem, | |
372 | &sta->sta.ht_cap); | |
373 | else | |
374 | memset(&sta->sta.ht_cap, 0, sizeof(sta->sta.ht_cap)); | |
375 | ||
57aac7c5 | 376 | if (elems->ht_operation) { |
c7d25828 TP |
377 | if (!(elems->ht_operation->ht_param & |
378 | IEEE80211_HT_PARAM_CHAN_WIDTH_ANY)) | |
379 | sta->sta.ht_cap.cap &= | |
380 | ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
57aac7c5 AN |
381 | sta->ch_type = |
382 | ieee80211_ht_oper_to_channel_type(elems->ht_operation); | |
383 | } | |
c7d25828 | 384 | |
54ab1ffb TP |
385 | rate_control_rate_init(sta); |
386 | spin_unlock_bh(&sta->lock); | |
387 | ||
e87278e7 TP |
388 | if (insert && sta_info_insert(sta)) |
389 | return NULL; | |
390 | ||
54ab1ffb TP |
391 | return sta; |
392 | } | |
393 | ||
f743ff49 TP |
394 | void mesh_neighbour_update(struct ieee80211_sub_if_data *sdata, |
395 | u8 *hw_addr, | |
54ab1ffb TP |
396 | struct ieee802_11_elems *elems) |
397 | { | |
398 | struct sta_info *sta; | |
399 | ||
54ab1ffb | 400 | rcu_read_lock(); |
f743ff49 | 401 | sta = mesh_peer_init(sdata, hw_addr, elems); |
54ab1ffb TP |
402 | if (!sta) |
403 | goto out; | |
404 | ||
1570ca59 | 405 | if (mesh_peer_accepts_plinks(elems) && |
54ab1ffb TP |
406 | sta->plink_state == NL80211_PLINK_LISTEN && |
407 | sdata->u.mesh.accepting_plinks && | |
408 | sdata->u.mesh.mshcfg.auto_open_plinks && | |
409 | rssi_threshold_check(sta, sdata)) | |
c3896d2c LCC |
410 | mesh_plink_open(sta); |
411 | ||
54ab1ffb | 412 | out: |
d0709a65 | 413 | rcu_read_unlock(); |
c3896d2c LCC |
414 | } |
415 | ||
416 | static void mesh_plink_timer(unsigned long data) | |
417 | { | |
418 | struct sta_info *sta; | |
419 | __le16 llid, plid, reason; | |
c3896d2c | 420 | struct ieee80211_sub_if_data *sdata; |
c3896d2c | 421 | |
d0709a65 JB |
422 | /* |
423 | * This STA is valid because sta_info_destroy() will | |
424 | * del_timer_sync() this timer after having made sure | |
425 | * it cannot be readded (by deleting the plink.) | |
426 | */ | |
c3896d2c LCC |
427 | sta = (struct sta_info *) data; |
428 | ||
5bb644a0 JB |
429 | if (sta->sdata->local->quiescing) { |
430 | sta->plink_timer_was_running = true; | |
431 | return; | |
432 | } | |
433 | ||
07346f81 | 434 | spin_lock_bh(&sta->lock); |
c3896d2c LCC |
435 | if (sta->ignore_plink_timer) { |
436 | sta->ignore_plink_timer = false; | |
07346f81 | 437 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
438 | return; |
439 | } | |
0c68ae26 JB |
440 | mpl_dbg("Mesh plink timer for %pM fired on state %d\n", |
441 | sta->sta.addr, sta->plink_state); | |
c3896d2c LCC |
442 | reason = 0; |
443 | llid = sta->llid; | |
444 | plid = sta->plid; | |
d0709a65 | 445 | sdata = sta->sdata; |
c3896d2c LCC |
446 | |
447 | switch (sta->plink_state) { | |
57cf8043 JC |
448 | case NL80211_PLINK_OPN_RCVD: |
449 | case NL80211_PLINK_OPN_SNT: | |
c3896d2c LCC |
450 | /* retry timer */ |
451 | if (sta->plink_retries < dot11MeshMaxRetries(sdata)) { | |
452 | u32 rand; | |
0c68ae26 JB |
453 | mpl_dbg("Mesh plink for %pM (retry, timeout): %d %d\n", |
454 | sta->sta.addr, sta->plink_retries, | |
455 | sta->plink_timeout); | |
c3896d2c LCC |
456 | get_random_bytes(&rand, sizeof(u32)); |
457 | sta->plink_timeout = sta->plink_timeout + | |
458 | rand % sta->plink_timeout; | |
459 | ++sta->plink_retries; | |
d0709a65 | 460 | mod_plink_timer(sta, sta->plink_timeout); |
07346f81 | 461 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
462 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_OPEN, |
463 | sta->sta.addr, llid, 0, 0); | |
c3896d2c LCC |
464 | break; |
465 | } | |
54ef656b | 466 | reason = cpu_to_le16(WLAN_REASON_MESH_MAX_RETRIES); |
c3896d2c | 467 | /* fall through on else */ |
57cf8043 | 468 | case NL80211_PLINK_CNF_RCVD: |
c3896d2c LCC |
469 | /* confirm timer */ |
470 | if (!reason) | |
54ef656b | 471 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIRM_TIMEOUT); |
57cf8043 | 472 | sta->plink_state = NL80211_PLINK_HOLDING; |
d0709a65 | 473 | mod_plink_timer(sta, dot11MeshHoldingTimeout(sdata)); |
07346f81 | 474 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
475 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
476 | sta->sta.addr, llid, plid, reason); | |
c3896d2c | 477 | break; |
57cf8043 | 478 | case NL80211_PLINK_HOLDING: |
c3896d2c | 479 | /* holding timer */ |
d0709a65 | 480 | del_timer(&sta->plink_timer); |
c3896d2c | 481 | mesh_plink_fsm_restart(sta); |
07346f81 | 482 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
483 | break; |
484 | default: | |
07346f81 | 485 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
486 | break; |
487 | } | |
c3896d2c LCC |
488 | } |
489 | ||
5bb644a0 JB |
490 | #ifdef CONFIG_PM |
491 | void mesh_plink_quiesce(struct sta_info *sta) | |
492 | { | |
493 | if (del_timer_sync(&sta->plink_timer)) | |
494 | sta->plink_timer_was_running = true; | |
495 | } | |
496 | ||
497 | void mesh_plink_restart(struct sta_info *sta) | |
498 | { | |
499 | if (sta->plink_timer_was_running) { | |
500 | add_timer(&sta->plink_timer); | |
501 | sta->plink_timer_was_running = false; | |
502 | } | |
503 | } | |
504 | #endif | |
505 | ||
c3896d2c LCC |
506 | static inline void mesh_plink_timer_set(struct sta_info *sta, int timeout) |
507 | { | |
508 | sta->plink_timer.expires = jiffies + (HZ * timeout / 1000); | |
509 | sta->plink_timer.data = (unsigned long) sta; | |
510 | sta->plink_timer.function = mesh_plink_timer; | |
511 | sta->plink_timeout = timeout; | |
c3896d2c LCC |
512 | add_timer(&sta->plink_timer); |
513 | } | |
514 | ||
515 | int mesh_plink_open(struct sta_info *sta) | |
516 | { | |
517 | __le16 llid; | |
d0709a65 | 518 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
c3896d2c | 519 | |
c2c98fde | 520 | if (!test_sta_flag(sta, WLAN_STA_AUTH)) |
53e80511 JC |
521 | return -EPERM; |
522 | ||
07346f81 | 523 | spin_lock_bh(&sta->lock); |
c3896d2c LCC |
524 | get_random_bytes(&llid, 2); |
525 | sta->llid = llid; | |
57cf8043 | 526 | if (sta->plink_state != NL80211_PLINK_LISTEN) { |
07346f81 | 527 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
528 | return -EBUSY; |
529 | } | |
57cf8043 | 530 | sta->plink_state = NL80211_PLINK_OPN_SNT; |
c3896d2c | 531 | mesh_plink_timer_set(sta, dot11MeshRetryTimeout(sdata)); |
07346f81 | 532 | spin_unlock_bh(&sta->lock); |
0c68ae26 JB |
533 | mpl_dbg("Mesh plink: starting establishment with %pM\n", |
534 | sta->sta.addr); | |
c3896d2c | 535 | |
54ef656b | 536 | return mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_OPEN, |
17741cdc | 537 | sta->sta.addr, llid, 0, 0); |
c3896d2c LCC |
538 | } |
539 | ||
540 | void mesh_plink_block(struct sta_info *sta) | |
541 | { | |
c9370197 JL |
542 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
543 | bool deactivated; | |
544 | ||
07346f81 | 545 | spin_lock_bh(&sta->lock); |
c9370197 | 546 | deactivated = __mesh_plink_deactivate(sta); |
57cf8043 | 547 | sta->plink_state = NL80211_PLINK_BLOCKED; |
07346f81 | 548 | spin_unlock_bh(&sta->lock); |
c9370197 JL |
549 | |
550 | if (deactivated) | |
551 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON); | |
c3896d2c LCC |
552 | } |
553 | ||
c3896d2c | 554 | |
f698d856 | 555 | void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_mgmt *mgmt, |
c3896d2c LCC |
556 | size_t len, struct ieee80211_rx_status *rx_status) |
557 | { | |
c3896d2c LCC |
558 | struct ieee802_11_elems elems; |
559 | struct sta_info *sta; | |
560 | enum plink_event event; | |
54ef656b | 561 | enum ieee80211_self_protected_actioncode ftype; |
c3896d2c | 562 | size_t baselen; |
57aac7c5 | 563 | bool matches_local = true; |
c3896d2c LCC |
564 | u8 ie_len; |
565 | u8 *baseaddr; | |
57aac7c5 | 566 | u32 changed = 0; |
c3896d2c | 567 | __le16 plid, llid, reason; |
1460dd15 RP |
568 | #ifdef CONFIG_MAC80211_VERBOSE_MPL_DEBUG |
569 | static const char *mplstates[] = { | |
57cf8043 JC |
570 | [NL80211_PLINK_LISTEN] = "LISTEN", |
571 | [NL80211_PLINK_OPN_SNT] = "OPN-SNT", | |
572 | [NL80211_PLINK_OPN_RCVD] = "OPN-RCVD", | |
573 | [NL80211_PLINK_CNF_RCVD] = "CNF_RCVD", | |
574 | [NL80211_PLINK_ESTAB] = "ESTAB", | |
575 | [NL80211_PLINK_HOLDING] = "HOLDING", | |
576 | [NL80211_PLINK_BLOCKED] = "BLOCKED" | |
1460dd15 RP |
577 | }; |
578 | #endif | |
c3896d2c | 579 | |
9c80d3dc JB |
580 | /* need action_code, aux */ |
581 | if (len < IEEE80211_MIN_ACTION_SIZE + 3) | |
582 | return; | |
583 | ||
c3896d2c LCC |
584 | if (is_multicast_ether_addr(mgmt->da)) { |
585 | mpl_dbg("Mesh plink: ignore frame from multicast address"); | |
586 | return; | |
587 | } | |
588 | ||
8db09850 TP |
589 | baseaddr = mgmt->u.action.u.self_prot.variable; |
590 | baselen = (u8 *) mgmt->u.action.u.self_prot.variable - (u8 *) mgmt; | |
591 | if (mgmt->u.action.u.self_prot.action_code == | |
54ef656b | 592 | WLAN_SP_MESH_PEERING_CONFIRM) { |
c3896d2c | 593 | baseaddr += 4; |
70bdb6b2 | 594 | baselen += 4; |
c3896d2c LCC |
595 | } |
596 | ieee802_11_parse_elems(baseaddr, len - baselen, &elems); | |
8db09850 | 597 | if (!elems.peering) { |
c3896d2c LCC |
598 | mpl_dbg("Mesh plink: missing necessary peer link ie\n"); |
599 | return; | |
600 | } | |
b130e5ce JC |
601 | if (elems.rsn_len && |
602 | sdata->u.mesh.security == IEEE80211_MESH_SEC_NONE) { | |
5cff5e01 JC |
603 | mpl_dbg("Mesh plink: can't establish link with secure peer\n"); |
604 | return; | |
605 | } | |
c3896d2c | 606 | |
8db09850 TP |
607 | ftype = mgmt->u.action.u.self_prot.action_code; |
608 | ie_len = elems.peering_len; | |
609 | if ((ftype == WLAN_SP_MESH_PEERING_OPEN && ie_len != 4) || | |
610 | (ftype == WLAN_SP_MESH_PEERING_CONFIRM && ie_len != 6) || | |
611 | (ftype == WLAN_SP_MESH_PEERING_CLOSE && ie_len != 6 | |
612 | && ie_len != 8)) { | |
0938393f RP |
613 | mpl_dbg("Mesh plink: incorrect plink ie length %d %d\n", |
614 | ftype, ie_len); | |
c3896d2c LCC |
615 | return; |
616 | } | |
617 | ||
54ef656b TP |
618 | if (ftype != WLAN_SP_MESH_PEERING_CLOSE && |
619 | (!elems.mesh_id || !elems.mesh_config)) { | |
c3896d2c LCC |
620 | mpl_dbg("Mesh plink: missing necessary ie\n"); |
621 | return; | |
622 | } | |
623 | /* Note the lines below are correct, the llid in the frame is the plid | |
624 | * from the point of view of this host. | |
625 | */ | |
8db09850 | 626 | memcpy(&plid, PLINK_GET_LLID(elems.peering), 2); |
54ef656b | 627 | if (ftype == WLAN_SP_MESH_PEERING_CONFIRM || |
8db09850 TP |
628 | (ftype == WLAN_SP_MESH_PEERING_CLOSE && ie_len == 8)) |
629 | memcpy(&llid, PLINK_GET_PLID(elems.peering), 2); | |
c3896d2c | 630 | |
d0709a65 JB |
631 | rcu_read_lock(); |
632 | ||
abe60632 | 633 | sta = sta_info_get(sdata, mgmt->sa); |
54ef656b | 634 | if (!sta && ftype != WLAN_SP_MESH_PEERING_OPEN) { |
c3896d2c | 635 | mpl_dbg("Mesh plink: cls or cnf from unknown peer\n"); |
d0709a65 | 636 | rcu_read_unlock(); |
c3896d2c LCC |
637 | return; |
638 | } | |
639 | ||
55335137 | 640 | if (ftype == WLAN_SP_MESH_PEERING_OPEN && |
3d4f9699 | 641 | !rssi_threshold_check(sta, sdata)) { |
55335137 | 642 | mpl_dbg("Mesh plink: %pM does not meet rssi threshold\n", |
3d4f9699 | 643 | mgmt->sa); |
55335137 AN |
644 | rcu_read_unlock(); |
645 | return; | |
646 | } | |
647 | ||
c2c98fde | 648 | if (sta && !test_sta_flag(sta, WLAN_STA_AUTH)) { |
53e80511 JC |
649 | mpl_dbg("Mesh plink: Action frame from non-authed peer\n"); |
650 | rcu_read_unlock(); | |
651 | return; | |
652 | } | |
653 | ||
57cf8043 | 654 | if (sta && sta->plink_state == NL80211_PLINK_BLOCKED) { |
d0709a65 | 655 | rcu_read_unlock(); |
c3896d2c LCC |
656 | return; |
657 | } | |
658 | ||
659 | /* Now we will figure out the appropriate event... */ | |
660 | event = PLINK_UNDEFINED; | |
54ef656b | 661 | if (ftype != WLAN_SP_MESH_PEERING_CLOSE && |
f743ff49 | 662 | !mesh_matches_local(sdata, &elems)) { |
d12c7452 | 663 | matches_local = false; |
c3896d2c | 664 | switch (ftype) { |
54ef656b | 665 | case WLAN_SP_MESH_PEERING_OPEN: |
c3896d2c LCC |
666 | event = OPN_RJCT; |
667 | break; | |
54ef656b | 668 | case WLAN_SP_MESH_PEERING_CONFIRM: |
c3896d2c LCC |
669 | event = CNF_RJCT; |
670 | break; | |
54ef656b | 671 | default: |
c3896d2c LCC |
672 | break; |
673 | } | |
d12c7452 CL |
674 | } |
675 | ||
676 | if (!sta && !matches_local) { | |
677 | rcu_read_unlock(); | |
54ef656b | 678 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
d12c7452 | 679 | llid = 0; |
54ef656b TP |
680 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
681 | mgmt->sa, llid, plid, reason); | |
d12c7452 | 682 | return; |
c3896d2c | 683 | } else if (!sta) { |
54ef656b | 684 | /* ftype == WLAN_SP_MESH_PEERING_OPEN */ |
c3896d2c LCC |
685 | if (!mesh_plink_free_count(sdata)) { |
686 | mpl_dbg("Mesh plink error: no more free plinks\n"); | |
73651ee6 JB |
687 | rcu_read_unlock(); |
688 | return; | |
689 | } | |
c3896d2c | 690 | event = OPN_ACPT; |
d12c7452 | 691 | } else if (matches_local) { |
c3896d2c | 692 | switch (ftype) { |
54ef656b | 693 | case WLAN_SP_MESH_PEERING_OPEN: |
c3896d2c | 694 | if (!mesh_plink_free_count(sdata) || |
d0709a65 | 695 | (sta->plid && sta->plid != plid)) |
c3896d2c LCC |
696 | event = OPN_IGNR; |
697 | else | |
698 | event = OPN_ACPT; | |
699 | break; | |
54ef656b | 700 | case WLAN_SP_MESH_PEERING_CONFIRM: |
c3896d2c | 701 | if (!mesh_plink_free_count(sdata) || |
d0709a65 | 702 | (sta->llid != llid || sta->plid != plid)) |
c3896d2c LCC |
703 | event = CNF_IGNR; |
704 | else | |
705 | event = CNF_ACPT; | |
706 | break; | |
54ef656b | 707 | case WLAN_SP_MESH_PEERING_CLOSE: |
57cf8043 | 708 | if (sta->plink_state == NL80211_PLINK_ESTAB) |
c3896d2c LCC |
709 | /* Do not check for llid or plid. This does not |
710 | * follow the standard but since multiple plinks | |
711 | * per sta are not supported, it is necessary in | |
712 | * order to avoid a livelock when MP A sees an | |
713 | * establish peer link to MP B but MP B does not | |
714 | * see it. This can be caused by a timeout in | |
715 | * B's peer link establishment or B beign | |
716 | * restarted. | |
717 | */ | |
718 | event = CLS_ACPT; | |
719 | else if (sta->plid != plid) | |
720 | event = CLS_IGNR; | |
721 | else if (ie_len == 7 && sta->llid != llid) | |
722 | event = CLS_IGNR; | |
723 | else | |
724 | event = CLS_ACPT; | |
725 | break; | |
726 | default: | |
727 | mpl_dbg("Mesh plink: unknown frame subtype\n"); | |
d0709a65 | 728 | rcu_read_unlock(); |
c3896d2c LCC |
729 | return; |
730 | } | |
54ab1ffb TP |
731 | } |
732 | ||
733 | if (event == OPN_ACPT) { | |
734 | /* allocate sta entry if necessary and update info */ | |
f743ff49 | 735 | sta = mesh_peer_init(sdata, mgmt->sa, &elems); |
54ab1ffb TP |
736 | if (!sta) { |
737 | mpl_dbg("Mesh plink: failed to init peer!\n"); | |
738 | rcu_read_unlock(); | |
739 | return; | |
740 | } | |
c3896d2c LCC |
741 | } |
742 | ||
1460dd15 RP |
743 | mpl_dbg("Mesh plink (peer, state, llid, plid, event): %pM %s %d %d %d\n", |
744 | mgmt->sa, mplstates[sta->plink_state], | |
0c68ae26 JB |
745 | le16_to_cpu(sta->llid), le16_to_cpu(sta->plid), |
746 | event); | |
c3896d2c | 747 | reason = 0; |
54ab1ffb | 748 | spin_lock_bh(&sta->lock); |
c3896d2c LCC |
749 | switch (sta->plink_state) { |
750 | /* spin_unlock as soon as state is updated at each case */ | |
57cf8043 | 751 | case NL80211_PLINK_LISTEN: |
c3896d2c LCC |
752 | switch (event) { |
753 | case CLS_ACPT: | |
754 | mesh_plink_fsm_restart(sta); | |
07346f81 | 755 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
756 | break; |
757 | case OPN_ACPT: | |
57cf8043 | 758 | sta->plink_state = NL80211_PLINK_OPN_RCVD; |
c3896d2c LCC |
759 | sta->plid = plid; |
760 | get_random_bytes(&llid, 2); | |
761 | sta->llid = llid; | |
762 | mesh_plink_timer_set(sta, dot11MeshRetryTimeout(sdata)); | |
07346f81 | 763 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
764 | mesh_plink_frame_tx(sdata, |
765 | WLAN_SP_MESH_PEERING_OPEN, | |
766 | sta->sta.addr, llid, 0, 0); | |
767 | mesh_plink_frame_tx(sdata, | |
768 | WLAN_SP_MESH_PEERING_CONFIRM, | |
769 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
770 | break; |
771 | default: | |
07346f81 | 772 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
773 | break; |
774 | } | |
775 | break; | |
776 | ||
57cf8043 | 777 | case NL80211_PLINK_OPN_SNT: |
c3896d2c LCC |
778 | switch (event) { |
779 | case OPN_RJCT: | |
780 | case CNF_RJCT: | |
54ef656b | 781 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
c3896d2c LCC |
782 | case CLS_ACPT: |
783 | if (!reason) | |
54ef656b | 784 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
c3896d2c | 785 | sta->reason = reason; |
57cf8043 | 786 | sta->plink_state = NL80211_PLINK_HOLDING; |
c3896d2c LCC |
787 | if (!mod_plink_timer(sta, |
788 | dot11MeshHoldingTimeout(sdata))) | |
789 | sta->ignore_plink_timer = true; | |
790 | ||
791 | llid = sta->llid; | |
07346f81 | 792 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
793 | mesh_plink_frame_tx(sdata, |
794 | WLAN_SP_MESH_PEERING_CLOSE, | |
795 | sta->sta.addr, llid, plid, reason); | |
c3896d2c LCC |
796 | break; |
797 | case OPN_ACPT: | |
798 | /* retry timer is left untouched */ | |
57cf8043 | 799 | sta->plink_state = NL80211_PLINK_OPN_RCVD; |
c3896d2c LCC |
800 | sta->plid = plid; |
801 | llid = sta->llid; | |
07346f81 | 802 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
803 | mesh_plink_frame_tx(sdata, |
804 | WLAN_SP_MESH_PEERING_CONFIRM, | |
805 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
806 | break; |
807 | case CNF_ACPT: | |
57cf8043 | 808 | sta->plink_state = NL80211_PLINK_CNF_RCVD; |
c3896d2c LCC |
809 | if (!mod_plink_timer(sta, |
810 | dot11MeshConfirmTimeout(sdata))) | |
811 | sta->ignore_plink_timer = true; | |
812 | ||
07346f81 | 813 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
814 | break; |
815 | default: | |
07346f81 | 816 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
817 | break; |
818 | } | |
819 | break; | |
820 | ||
57cf8043 | 821 | case NL80211_PLINK_OPN_RCVD: |
c3896d2c LCC |
822 | switch (event) { |
823 | case OPN_RJCT: | |
824 | case CNF_RJCT: | |
54ef656b | 825 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
c3896d2c LCC |
826 | case CLS_ACPT: |
827 | if (!reason) | |
54ef656b | 828 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
c3896d2c | 829 | sta->reason = reason; |
57cf8043 | 830 | sta->plink_state = NL80211_PLINK_HOLDING; |
c3896d2c LCC |
831 | if (!mod_plink_timer(sta, |
832 | dot11MeshHoldingTimeout(sdata))) | |
833 | sta->ignore_plink_timer = true; | |
834 | ||
835 | llid = sta->llid; | |
07346f81 | 836 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
837 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
838 | sta->sta.addr, llid, plid, reason); | |
c3896d2c LCC |
839 | break; |
840 | case OPN_ACPT: | |
841 | llid = sta->llid; | |
07346f81 | 842 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
843 | mesh_plink_frame_tx(sdata, |
844 | WLAN_SP_MESH_PEERING_CONFIRM, | |
845 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
846 | break; |
847 | case CNF_ACPT: | |
d0709a65 | 848 | del_timer(&sta->plink_timer); |
57cf8043 | 849 | sta->plink_state = NL80211_PLINK_ESTAB; |
07346f81 | 850 | spin_unlock_bh(&sta->lock); |
c9370197 | 851 | mesh_plink_inc_estab_count(sdata); |
57aac7c5 AN |
852 | changed |= mesh_set_ht_prot_mode(sdata); |
853 | changed |= BSS_CHANGED_BEACON; | |
0c68ae26 JB |
854 | mpl_dbg("Mesh plink with %pM ESTABLISHED\n", |
855 | sta->sta.addr); | |
c3896d2c LCC |
856 | break; |
857 | default: | |
07346f81 | 858 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
859 | break; |
860 | } | |
861 | break; | |
862 | ||
57cf8043 | 863 | case NL80211_PLINK_CNF_RCVD: |
c3896d2c LCC |
864 | switch (event) { |
865 | case OPN_RJCT: | |
866 | case CNF_RJCT: | |
54ef656b | 867 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
c3896d2c LCC |
868 | case CLS_ACPT: |
869 | if (!reason) | |
54ef656b | 870 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
c3896d2c | 871 | sta->reason = reason; |
57cf8043 | 872 | sta->plink_state = NL80211_PLINK_HOLDING; |
c3896d2c LCC |
873 | if (!mod_plink_timer(sta, |
874 | dot11MeshHoldingTimeout(sdata))) | |
875 | sta->ignore_plink_timer = true; | |
876 | ||
877 | llid = sta->llid; | |
07346f81 | 878 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
879 | mesh_plink_frame_tx(sdata, |
880 | WLAN_SP_MESH_PEERING_CLOSE, | |
881 | sta->sta.addr, llid, plid, reason); | |
ff59dc76 | 882 | break; |
c3896d2c | 883 | case OPN_ACPT: |
d0709a65 | 884 | del_timer(&sta->plink_timer); |
57cf8043 | 885 | sta->plink_state = NL80211_PLINK_ESTAB; |
07346f81 | 886 | spin_unlock_bh(&sta->lock); |
c9370197 | 887 | mesh_plink_inc_estab_count(sdata); |
57aac7c5 AN |
888 | changed |= mesh_set_ht_prot_mode(sdata); |
889 | changed |= BSS_CHANGED_BEACON; | |
0c68ae26 JB |
890 | mpl_dbg("Mesh plink with %pM ESTABLISHED\n", |
891 | sta->sta.addr); | |
54ef656b TP |
892 | mesh_plink_frame_tx(sdata, |
893 | WLAN_SP_MESH_PEERING_CONFIRM, | |
894 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
895 | break; |
896 | default: | |
07346f81 | 897 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
898 | break; |
899 | } | |
900 | break; | |
901 | ||
57cf8043 | 902 | case NL80211_PLINK_ESTAB: |
c3896d2c LCC |
903 | switch (event) { |
904 | case CLS_ACPT: | |
54ef656b | 905 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
c3896d2c | 906 | sta->reason = reason; |
57aac7c5 | 907 | __mesh_plink_deactivate(sta); |
57cf8043 | 908 | sta->plink_state = NL80211_PLINK_HOLDING; |
c3896d2c | 909 | llid = sta->llid; |
d0709a65 | 910 | mod_plink_timer(sta, dot11MeshHoldingTimeout(sdata)); |
07346f81 | 911 | spin_unlock_bh(&sta->lock); |
57aac7c5 AN |
912 | changed |= mesh_set_ht_prot_mode(sdata); |
913 | changed |= BSS_CHANGED_BEACON; | |
54ef656b TP |
914 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
915 | sta->sta.addr, llid, plid, reason); | |
c3896d2c LCC |
916 | break; |
917 | case OPN_ACPT: | |
918 | llid = sta->llid; | |
07346f81 | 919 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
920 | mesh_plink_frame_tx(sdata, |
921 | WLAN_SP_MESH_PEERING_CONFIRM, | |
922 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
923 | break; |
924 | default: | |
07346f81 | 925 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
926 | break; |
927 | } | |
928 | break; | |
57cf8043 | 929 | case NL80211_PLINK_HOLDING: |
c3896d2c LCC |
930 | switch (event) { |
931 | case CLS_ACPT: | |
d0709a65 | 932 | if (del_timer(&sta->plink_timer)) |
c3896d2c | 933 | sta->ignore_plink_timer = 1; |
c3896d2c | 934 | mesh_plink_fsm_restart(sta); |
07346f81 | 935 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
936 | break; |
937 | case OPN_ACPT: | |
938 | case CNF_ACPT: | |
939 | case OPN_RJCT: | |
940 | case CNF_RJCT: | |
941 | llid = sta->llid; | |
942 | reason = sta->reason; | |
07346f81 | 943 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
944 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
945 | sta->sta.addr, llid, plid, reason); | |
c3896d2c LCC |
946 | break; |
947 | default: | |
07346f81 | 948 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
949 | } |
950 | break; | |
951 | default: | |
b4e08ea1 | 952 | /* should not get here, PLINK_BLOCKED is dealt with at the |
3ad2f3fb | 953 | * beginning of the function |
c3896d2c | 954 | */ |
07346f81 | 955 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
956 | break; |
957 | } | |
d0709a65 JB |
958 | |
959 | rcu_read_unlock(); | |
57aac7c5 AN |
960 | |
961 | if (changed) | |
962 | ieee80211_bss_info_change_notify(sdata, changed); | |
c3896d2c | 963 | } |