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