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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 | 15 | |
8db09850 TP |
16 | #define PLINK_GET_LLID(p) (p + 2) |
17 | #define PLINK_GET_PLID(p) (p + 4) | |
c3896d2c LCC |
18 | |
19 | #define mod_plink_timer(s, t) (mod_timer(&s->plink_timer, \ | |
20 | jiffies + HZ * t / 1000)) | |
21 | ||
472dbc45 JB |
22 | #define dot11MeshMaxRetries(s) (s->u.mesh.mshcfg.dot11MeshMaxRetries) |
23 | #define dot11MeshRetryTimeout(s) (s->u.mesh.mshcfg.dot11MeshRetryTimeout) | |
24 | #define dot11MeshConfirmTimeout(s) (s->u.mesh.mshcfg.dot11MeshConfirmTimeout) | |
25 | #define dot11MeshHoldingTimeout(s) (s->u.mesh.mshcfg.dot11MeshHoldingTimeout) | |
26 | #define dot11MeshMaxPeerLinks(s) (s->u.mesh.mshcfg.dot11MeshMaxPeerLinks) | |
c3896d2c | 27 | |
3d4f9699 AN |
28 | /* We only need a valid sta if user configured a minimum rssi_threshold. */ |
29 | #define rssi_threshold_check(sta, sdata) \ | |
55335137 | 30 | (sdata->u.mesh.mshcfg.rssi_threshold == 0 ||\ |
3d4f9699 AN |
31 | (sta && (s8) -ewma_read(&sta->avg_signal) > \ |
32 | sdata->u.mesh.mshcfg.rssi_threshold)) | |
55335137 | 33 | |
c3896d2c LCC |
34 | enum plink_event { |
35 | PLINK_UNDEFINED, | |
36 | OPN_ACPT, | |
37 | OPN_RJCT, | |
38 | OPN_IGNR, | |
39 | CNF_ACPT, | |
40 | CNF_RJCT, | |
41 | CNF_IGNR, | |
42 | CLS_ACPT, | |
43 | CLS_IGNR | |
44 | }; | |
45 | ||
ba4a14e1 TP |
46 | static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata, |
47 | enum ieee80211_self_protected_actioncode action, | |
48 | u8 *da, __le16 llid, __le16 plid, __le16 reason); | |
49 | ||
c3896d2c LCC |
50 | static inline |
51 | void mesh_plink_inc_estab_count(struct ieee80211_sub_if_data *sdata) | |
52 | { | |
472dbc45 | 53 | atomic_inc(&sdata->u.mesh.mshstats.estab_plinks); |
d0709a65 | 54 | mesh_accept_plinks_update(sdata); |
c3896d2c LCC |
55 | } |
56 | ||
57 | static inline | |
58 | void mesh_plink_dec_estab_count(struct ieee80211_sub_if_data *sdata) | |
59 | { | |
472dbc45 | 60 | atomic_dec(&sdata->u.mesh.mshstats.estab_plinks); |
d0709a65 | 61 | mesh_accept_plinks_update(sdata); |
c3896d2c LCC |
62 | } |
63 | ||
64 | /** | |
65 | * mesh_plink_fsm_restart - restart a mesh peer link finite state machine | |
66 | * | |
23c7a29c | 67 | * @sta: mesh peer link to restart |
c3896d2c | 68 | * |
07346f81 | 69 | * Locking: this function must be called holding sta->lock |
c3896d2c LCC |
70 | */ |
71 | static inline void mesh_plink_fsm_restart(struct sta_info *sta) | |
72 | { | |
57cf8043 | 73 | sta->plink_state = NL80211_PLINK_LISTEN; |
37659ff8 LCC |
74 | sta->llid = sta->plid = sta->reason = 0; |
75 | sta->plink_retries = 0; | |
c3896d2c LCC |
76 | } |
77 | ||
93e5deb1 | 78 | /* |
54ab1ffb | 79 | * Allocate mesh sta entry and insert into station table |
93e5deb1 | 80 | */ |
03e4497e | 81 | static struct sta_info *mesh_plink_alloc(struct ieee80211_sub_if_data *sdata, |
54ab1ffb | 82 | u8 *hw_addr) |
c3896d2c | 83 | { |
c3896d2c LCC |
84 | struct sta_info *sta; |
85 | ||
54ab1ffb | 86 | if (sdata->local->num_sta >= MESH_MAX_PLINKS) |
73651ee6 | 87 | return NULL; |
c3896d2c | 88 | |
34e89507 | 89 | sta = sta_info_alloc(sdata, hw_addr, GFP_KERNEL); |
73651ee6 JB |
90 | if (!sta) |
91 | return NULL; | |
c3896d2c | 92 | |
83d5cc01 JB |
93 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); |
94 | sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); | |
95 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTHORIZED); | |
d9a7ddb0 | 96 | |
c2c98fde | 97 | set_sta_flag(sta, WLAN_STA_WME); |
d9a7ddb0 | 98 | |
c3896d2c LCC |
99 | return sta; |
100 | } | |
101 | ||
2c53040f | 102 | /** |
cbf9322e | 103 | * mesh_set_ht_prot_mode - set correct HT protection mode |
57aac7c5 | 104 | * |
cbf9322e AN |
105 | * Section 9.23.3.5 of IEEE 80211-2012 describes the protection rules for HT |
106 | * mesh STA in a MBSS. Three HT protection modes are supported for now, non-HT | |
107 | * mixed mode, 20MHz-protection and no-protection mode. non-HT mixed mode is | |
108 | * selected if any non-HT peers are present in our MBSS. 20MHz-protection mode | |
109 | * is selected if all peers in our 20/40MHz MBSS support HT and atleast one | |
110 | * HT20 peer is present. Otherwise no-protection mode is selected. | |
57aac7c5 AN |
111 | */ |
112 | static u32 mesh_set_ht_prot_mode(struct ieee80211_sub_if_data *sdata) | |
113 | { | |
114 | struct ieee80211_local *local = sdata->local; | |
115 | struct sta_info *sta; | |
116 | u32 changed = 0; | |
117 | u16 ht_opmode; | |
118 | bool non_ht_sta = false, ht20_sta = false; | |
119 | ||
120 | if (local->_oper_channel_type == NL80211_CHAN_NO_HT) | |
121 | return 0; | |
122 | ||
123 | rcu_read_lock(); | |
124 | list_for_each_entry_rcu(sta, &local->sta_list, list) { | |
cbf9322e AN |
125 | if (sdata != sta->sdata || |
126 | sta->plink_state != NL80211_PLINK_ESTAB) | |
127 | continue; | |
128 | ||
129 | switch (sta->ch_type) { | |
130 | case NL80211_CHAN_NO_HT: | |
bdcbd8e0 JB |
131 | mpl_dbg(sdata, |
132 | "mesh_plink %pM: nonHT sta (%pM) is present\n", | |
cbf9322e AN |
133 | sdata->vif.addr, sta->sta.addr); |
134 | non_ht_sta = true; | |
135 | goto out; | |
136 | case NL80211_CHAN_HT20: | |
bdcbd8e0 JB |
137 | mpl_dbg(sdata, |
138 | "mesh_plink %pM: HT20 sta (%pM) is present\n", | |
cbf9322e AN |
139 | sdata->vif.addr, sta->sta.addr); |
140 | ht20_sta = true; | |
141 | default: | |
142 | break; | |
57aac7c5 AN |
143 | } |
144 | } | |
145 | out: | |
146 | rcu_read_unlock(); | |
147 | ||
148 | if (non_ht_sta) | |
149 | ht_opmode = IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED; | |
150 | else if (ht20_sta && local->_oper_channel_type > NL80211_CHAN_HT20) | |
151 | ht_opmode = IEEE80211_HT_OP_MODE_PROTECTION_20MHZ; | |
152 | else | |
153 | ht_opmode = IEEE80211_HT_OP_MODE_PROTECTION_NONE; | |
154 | ||
155 | if (sdata->vif.bss_conf.ht_operation_mode != ht_opmode) { | |
156 | sdata->vif.bss_conf.ht_operation_mode = ht_opmode; | |
70c33eaa | 157 | sdata->u.mesh.mshcfg.ht_opmode = ht_opmode; |
57aac7c5 | 158 | changed = BSS_CHANGED_HT; |
bdcbd8e0 JB |
159 | mpl_dbg(sdata, |
160 | "mesh_plink %pM: protection mode changed to %d\n", | |
57aac7c5 AN |
161 | sdata->vif.addr, ht_opmode); |
162 | } | |
163 | ||
164 | return changed; | |
165 | } | |
166 | ||
c3896d2c | 167 | /** |
c9370197 | 168 | * __mesh_plink_deactivate - deactivate mesh peer link |
c3896d2c LCC |
169 | * |
170 | * @sta: mesh peer link to deactivate | |
171 | * | |
172 | * All mesh paths with this peer as next hop will be flushed | |
173 | * | |
07346f81 | 174 | * Locking: the caller must hold sta->lock |
c3896d2c | 175 | */ |
c9370197 | 176 | static bool __mesh_plink_deactivate(struct sta_info *sta) |
c3896d2c | 177 | { |
d0709a65 | 178 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
c9370197 | 179 | bool deactivated = false; |
d0709a65 | 180 | |
57cf8043 | 181 | if (sta->plink_state == NL80211_PLINK_ESTAB) { |
c3896d2c | 182 | mesh_plink_dec_estab_count(sdata); |
c9370197 JL |
183 | deactivated = true; |
184 | } | |
57cf8043 | 185 | sta->plink_state = NL80211_PLINK_BLOCKED; |
c3896d2c | 186 | mesh_path_flush_by_nexthop(sta); |
c9370197 JL |
187 | |
188 | return deactivated; | |
c3896d2c LCC |
189 | } |
190 | ||
902acc78 | 191 | /** |
c9370197 | 192 | * mesh_plink_deactivate - deactivate mesh peer link |
902acc78 JB |
193 | * |
194 | * @sta: mesh peer link to deactivate | |
195 | * | |
196 | * All mesh paths with this peer as next hop will be flushed | |
197 | */ | |
198 | void mesh_plink_deactivate(struct sta_info *sta) | |
199 | { | |
c9370197 JL |
200 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
201 | bool deactivated; | |
202 | ||
07346f81 | 203 | spin_lock_bh(&sta->lock); |
c9370197 | 204 | deactivated = __mesh_plink_deactivate(sta); |
ba4a14e1 TP |
205 | sta->reason = cpu_to_le16(WLAN_REASON_MESH_PEER_CANCELED); |
206 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, | |
207 | sta->sta.addr, sta->llid, sta->plid, | |
208 | sta->reason); | |
07346f81 | 209 | spin_unlock_bh(&sta->lock); |
c9370197 JL |
210 | |
211 | if (deactivated) | |
212 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON); | |
902acc78 JB |
213 | } |
214 | ||
f698d856 | 215 | static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata, |
54ef656b TP |
216 | enum ieee80211_self_protected_actioncode action, |
217 | u8 *da, __le16 llid, __le16 plid, __le16 reason) { | |
f698d856 | 218 | struct ieee80211_local *local = sdata->local; |
3b69a9c5 | 219 | struct sk_buff *skb; |
e7570dfb | 220 | struct ieee80211_tx_info *info; |
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; | |
e7570dfb | 242 | info = IEEE80211_SKB_CB(skb); |
65e8b0cc | 243 | skb_reserve(skb, local->tx_headroom); |
3b69a9c5 TP |
244 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, hdr_len); |
245 | memset(mgmt, 0, hdr_len); | |
e7827a70 HH |
246 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
247 | IEEE80211_STYPE_ACTION); | |
c3896d2c | 248 | memcpy(mgmt->da, da, ETH_ALEN); |
47846c9b | 249 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); |
915b5c50 | 250 | memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN); |
8db09850 TP |
251 | mgmt->u.action.category = WLAN_CATEGORY_SELF_PROTECTED; |
252 | mgmt->u.action.u.self_prot.action_code = action; | |
c3896d2c | 253 | |
8db09850 TP |
254 | if (action != WLAN_SP_MESH_PEERING_CLOSE) { |
255 | /* capability info */ | |
256 | pos = skb_put(skb, 2); | |
257 | memset(pos, 0, 2); | |
54ef656b | 258 | if (action == WLAN_SP_MESH_PEERING_CONFIRM) { |
8db09850 TP |
259 | /* AID */ |
260 | pos = skb_put(skb, 2); | |
77fa76bb | 261 | memcpy(pos + 2, &plid, 2); |
c3896d2c | 262 | } |
6b77863b JB |
263 | if (ieee80211_add_srates_ie(sdata, skb, true, |
264 | local->oper_channel->band) || | |
265 | ieee80211_add_ext_srates_ie(sdata, skb, true, | |
266 | local->oper_channel->band) || | |
082ebb0c TP |
267 | mesh_add_rsn_ie(skb, sdata) || |
268 | mesh_add_meshid_ie(skb, sdata) || | |
269 | mesh_add_meshconf_ie(skb, sdata)) | |
270 | return -1; | |
8db09850 | 271 | } else { /* WLAN_SP_MESH_PEERING_CLOSE */ |
e7570dfb | 272 | info->flags |= IEEE80211_TX_CTL_NO_ACK; |
8db09850 TP |
273 | if (mesh_add_meshid_ie(skb, sdata)) |
274 | return -1; | |
c3896d2c LCC |
275 | } |
276 | ||
8db09850 | 277 | /* Add Mesh Peering Management element */ |
c3896d2c | 278 | switch (action) { |
54ef656b | 279 | case WLAN_SP_MESH_PEERING_OPEN: |
c3896d2c | 280 | break; |
54ef656b | 281 | case WLAN_SP_MESH_PEERING_CONFIRM: |
8db09850 | 282 | ie_len += 2; |
c3896d2c LCC |
283 | include_plid = true; |
284 | break; | |
54ef656b | 285 | case WLAN_SP_MESH_PEERING_CLOSE: |
8db09850 TP |
286 | if (plid) { |
287 | ie_len += 2; | |
c3896d2c LCC |
288 | include_plid = true; |
289 | } | |
8db09850 | 290 | ie_len += 2; /* reason code */ |
c3896d2c | 291 | break; |
8db09850 TP |
292 | default: |
293 | return -EINVAL; | |
c3896d2c LCC |
294 | } |
295 | ||
8db09850 TP |
296 | if (WARN_ON(skb_tailroom(skb) < 2 + ie_len)) |
297 | return -ENOMEM; | |
298 | ||
c3896d2c | 299 | pos = skb_put(skb, 2 + ie_len); |
8db09850 | 300 | *pos++ = WLAN_EID_PEER_MGMT; |
c3896d2c | 301 | *pos++ = ie_len; |
8db09850 TP |
302 | memcpy(pos, &peering_proto, 2); |
303 | pos += 2; | |
c3896d2c | 304 | memcpy(pos, &llid, 2); |
8db09850 | 305 | pos += 2; |
c3896d2c | 306 | if (include_plid) { |
c3896d2c | 307 | memcpy(pos, &plid, 2); |
8db09850 | 308 | pos += 2; |
c3896d2c | 309 | } |
54ef656b | 310 | if (action == WLAN_SP_MESH_PEERING_CLOSE) { |
c3896d2c | 311 | memcpy(pos, &reason, 2); |
8db09850 | 312 | pos += 2; |
c3896d2c | 313 | } |
176f3608 TP |
314 | |
315 | if (action != WLAN_SP_MESH_PEERING_CLOSE) { | |
316 | if (mesh_add_ht_cap_ie(skb, sdata) || | |
074d46d1 | 317 | mesh_add_ht_oper_ie(skb, sdata)) |
176f3608 TP |
318 | return -1; |
319 | } | |
320 | ||
8db09850 TP |
321 | if (mesh_add_vendor_ies(skb, sdata)) |
322 | return -1; | |
c3896d2c | 323 | |
62ae67be | 324 | ieee80211_tx_skb(sdata, skb); |
c3896d2c LCC |
325 | return 0; |
326 | } | |
327 | ||
2c53040f BH |
328 | /** |
329 | * mesh_peer_init - initialize new mesh peer and return resulting sta_info | |
54ab1ffb TP |
330 | * |
331 | * @sdata: local meshif | |
332 | * @addr: peer's address | |
54ab1ffb TP |
333 | * @elems: IEs from beacon or mesh peering frame |
334 | * | |
335 | * call under RCU | |
336 | */ | |
337 | static struct sta_info *mesh_peer_init(struct ieee80211_sub_if_data *sdata, | |
f743ff49 | 338 | u8 *addr, |
54ab1ffb | 339 | struct ieee802_11_elems *elems) |
c3896d2c | 340 | { |
f698d856 | 341 | struct ieee80211_local *local = sdata->local; |
f743ff49 | 342 | enum ieee80211_band band = local->oper_channel->band; |
54ab1ffb | 343 | struct ieee80211_supported_band *sband; |
f743ff49 | 344 | u32 rates, basic_rates = 0; |
c3896d2c | 345 | struct sta_info *sta; |
e87278e7 | 346 | bool insert = false; |
c3896d2c | 347 | |
f743ff49 TP |
348 | sband = local->hw.wiphy->bands[band]; |
349 | rates = ieee80211_sta_get_rates(local, elems, band, &basic_rates); | |
d0709a65 | 350 | |
54ab1ffb | 351 | sta = sta_info_get(sdata, addr); |
c3896d2c | 352 | if (!sta) { |
f5c56814 TP |
353 | /* Userspace handles peer allocation when security is enabled */ |
354 | if (sdata->u.mesh.security & IEEE80211_MESH_SEC_AUTHED) { | |
355 | cfg80211_notify_new_peer_candidate(sdata->dev, addr, | |
356 | elems->ie_start, | |
357 | elems->total_len, | |
358 | GFP_ATOMIC); | |
359 | return NULL; | |
360 | } | |
361 | ||
54ab1ffb | 362 | sta = mesh_plink_alloc(sdata, addr); |
34e89507 | 363 | if (!sta) |
54ab1ffb | 364 | return NULL; |
e87278e7 | 365 | insert = true; |
c3896d2c LCC |
366 | } |
367 | ||
54ab1ffb | 368 | spin_lock_bh(&sta->lock); |
c3896d2c | 369 | sta->last_rx = jiffies; |
bae35d92 CYY |
370 | if (sta->plink_state == NL80211_PLINK_ESTAB) { |
371 | spin_unlock_bh(&sta->lock); | |
372 | return sta; | |
373 | } | |
374 | ||
f743ff49 | 375 | sta->sta.supp_rates[band] = rates; |
e76781e4 TP |
376 | if (elems->ht_cap_elem && |
377 | sdata->local->_oper_channel_type != NL80211_CHAN_NO_HT) | |
54ab1ffb TP |
378 | ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, |
379 | elems->ht_cap_elem, | |
380 | &sta->sta.ht_cap); | |
381 | else | |
382 | memset(&sta->sta.ht_cap, 0, sizeof(sta->sta.ht_cap)); | |
383 | ||
57aac7c5 | 384 | if (elems->ht_operation) { |
c7d25828 TP |
385 | if (!(elems->ht_operation->ht_param & |
386 | IEEE80211_HT_PARAM_CHAN_WIDTH_ANY)) | |
387 | sta->sta.ht_cap.cap &= | |
388 | ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
57aac7c5 AN |
389 | sta->ch_type = |
390 | ieee80211_ht_oper_to_channel_type(elems->ht_operation); | |
391 | } | |
c7d25828 | 392 | |
54ab1ffb TP |
393 | rate_control_rate_init(sta); |
394 | spin_unlock_bh(&sta->lock); | |
395 | ||
e87278e7 TP |
396 | if (insert && sta_info_insert(sta)) |
397 | return NULL; | |
398 | ||
54ab1ffb TP |
399 | return sta; |
400 | } | |
401 | ||
f743ff49 TP |
402 | void mesh_neighbour_update(struct ieee80211_sub_if_data *sdata, |
403 | u8 *hw_addr, | |
54ab1ffb TP |
404 | struct ieee802_11_elems *elems) |
405 | { | |
406 | struct sta_info *sta; | |
407 | ||
54ab1ffb | 408 | rcu_read_lock(); |
f743ff49 | 409 | sta = mesh_peer_init(sdata, hw_addr, elems); |
54ab1ffb TP |
410 | if (!sta) |
411 | goto out; | |
412 | ||
1570ca59 | 413 | if (mesh_peer_accepts_plinks(elems) && |
54ab1ffb TP |
414 | sta->plink_state == NL80211_PLINK_LISTEN && |
415 | sdata->u.mesh.accepting_plinks && | |
416 | sdata->u.mesh.mshcfg.auto_open_plinks && | |
417 | rssi_threshold_check(sta, sdata)) | |
c3896d2c LCC |
418 | mesh_plink_open(sta); |
419 | ||
54ab1ffb | 420 | out: |
d0709a65 | 421 | rcu_read_unlock(); |
c3896d2c LCC |
422 | } |
423 | ||
424 | static void mesh_plink_timer(unsigned long data) | |
425 | { | |
426 | struct sta_info *sta; | |
427 | __le16 llid, plid, reason; | |
c3896d2c | 428 | struct ieee80211_sub_if_data *sdata; |
c3896d2c | 429 | |
d0709a65 JB |
430 | /* |
431 | * This STA is valid because sta_info_destroy() will | |
432 | * del_timer_sync() this timer after having made sure | |
433 | * it cannot be readded (by deleting the plink.) | |
434 | */ | |
c3896d2c LCC |
435 | sta = (struct sta_info *) data; |
436 | ||
5bb644a0 JB |
437 | if (sta->sdata->local->quiescing) { |
438 | sta->plink_timer_was_running = true; | |
439 | return; | |
440 | } | |
441 | ||
07346f81 | 442 | spin_lock_bh(&sta->lock); |
c3896d2c LCC |
443 | if (sta->ignore_plink_timer) { |
444 | sta->ignore_plink_timer = false; | |
07346f81 | 445 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
446 | return; |
447 | } | |
bdcbd8e0 JB |
448 | mpl_dbg(sta->sdata, |
449 | "Mesh plink timer for %pM fired on state %d\n", | |
0c68ae26 | 450 | sta->sta.addr, sta->plink_state); |
c3896d2c LCC |
451 | reason = 0; |
452 | llid = sta->llid; | |
453 | plid = sta->plid; | |
d0709a65 | 454 | sdata = sta->sdata; |
c3896d2c LCC |
455 | |
456 | switch (sta->plink_state) { | |
57cf8043 JC |
457 | case NL80211_PLINK_OPN_RCVD: |
458 | case NL80211_PLINK_OPN_SNT: | |
c3896d2c LCC |
459 | /* retry timer */ |
460 | if (sta->plink_retries < dot11MeshMaxRetries(sdata)) { | |
461 | u32 rand; | |
bdcbd8e0 JB |
462 | mpl_dbg(sta->sdata, |
463 | "Mesh plink for %pM (retry, timeout): %d %d\n", | |
0c68ae26 JB |
464 | sta->sta.addr, sta->plink_retries, |
465 | sta->plink_timeout); | |
c3896d2c LCC |
466 | get_random_bytes(&rand, sizeof(u32)); |
467 | sta->plink_timeout = sta->plink_timeout + | |
468 | rand % sta->plink_timeout; | |
469 | ++sta->plink_retries; | |
d0709a65 | 470 | mod_plink_timer(sta, sta->plink_timeout); |
07346f81 | 471 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
472 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_OPEN, |
473 | sta->sta.addr, llid, 0, 0); | |
c3896d2c LCC |
474 | break; |
475 | } | |
54ef656b | 476 | reason = cpu_to_le16(WLAN_REASON_MESH_MAX_RETRIES); |
c3896d2c | 477 | /* fall through on else */ |
57cf8043 | 478 | case NL80211_PLINK_CNF_RCVD: |
c3896d2c LCC |
479 | /* confirm timer */ |
480 | if (!reason) | |
54ef656b | 481 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIRM_TIMEOUT); |
57cf8043 | 482 | sta->plink_state = NL80211_PLINK_HOLDING; |
d0709a65 | 483 | mod_plink_timer(sta, dot11MeshHoldingTimeout(sdata)); |
07346f81 | 484 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
485 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
486 | sta->sta.addr, llid, plid, reason); | |
c3896d2c | 487 | break; |
57cf8043 | 488 | case NL80211_PLINK_HOLDING: |
c3896d2c | 489 | /* holding timer */ |
d0709a65 | 490 | del_timer(&sta->plink_timer); |
c3896d2c | 491 | mesh_plink_fsm_restart(sta); |
07346f81 | 492 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
493 | break; |
494 | default: | |
07346f81 | 495 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
496 | break; |
497 | } | |
c3896d2c LCC |
498 | } |
499 | ||
5bb644a0 JB |
500 | #ifdef CONFIG_PM |
501 | void mesh_plink_quiesce(struct sta_info *sta) | |
502 | { | |
503 | if (del_timer_sync(&sta->plink_timer)) | |
504 | sta->plink_timer_was_running = true; | |
505 | } | |
506 | ||
507 | void mesh_plink_restart(struct sta_info *sta) | |
508 | { | |
509 | if (sta->plink_timer_was_running) { | |
510 | add_timer(&sta->plink_timer); | |
511 | sta->plink_timer_was_running = false; | |
512 | } | |
513 | } | |
514 | #endif | |
515 | ||
c3896d2c LCC |
516 | static inline void mesh_plink_timer_set(struct sta_info *sta, int timeout) |
517 | { | |
518 | sta->plink_timer.expires = jiffies + (HZ * timeout / 1000); | |
519 | sta->plink_timer.data = (unsigned long) sta; | |
520 | sta->plink_timer.function = mesh_plink_timer; | |
521 | sta->plink_timeout = timeout; | |
c3896d2c LCC |
522 | add_timer(&sta->plink_timer); |
523 | } | |
524 | ||
525 | int mesh_plink_open(struct sta_info *sta) | |
526 | { | |
527 | __le16 llid; | |
d0709a65 | 528 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
c3896d2c | 529 | |
c2c98fde | 530 | if (!test_sta_flag(sta, WLAN_STA_AUTH)) |
53e80511 JC |
531 | return -EPERM; |
532 | ||
07346f81 | 533 | spin_lock_bh(&sta->lock); |
c3896d2c LCC |
534 | get_random_bytes(&llid, 2); |
535 | sta->llid = llid; | |
57cf8043 | 536 | if (sta->plink_state != NL80211_PLINK_LISTEN) { |
07346f81 | 537 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
538 | return -EBUSY; |
539 | } | |
57cf8043 | 540 | sta->plink_state = NL80211_PLINK_OPN_SNT; |
c3896d2c | 541 | mesh_plink_timer_set(sta, dot11MeshRetryTimeout(sdata)); |
07346f81 | 542 | spin_unlock_bh(&sta->lock); |
bdcbd8e0 JB |
543 | mpl_dbg(sdata, |
544 | "Mesh plink: starting establishment with %pM\n", | |
0c68ae26 | 545 | sta->sta.addr); |
c3896d2c | 546 | |
54ef656b | 547 | return mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_OPEN, |
17741cdc | 548 | sta->sta.addr, llid, 0, 0); |
c3896d2c LCC |
549 | } |
550 | ||
551 | void mesh_plink_block(struct sta_info *sta) | |
552 | { | |
c9370197 JL |
553 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
554 | bool deactivated; | |
555 | ||
07346f81 | 556 | spin_lock_bh(&sta->lock); |
c9370197 | 557 | deactivated = __mesh_plink_deactivate(sta); |
57cf8043 | 558 | sta->plink_state = NL80211_PLINK_BLOCKED; |
07346f81 | 559 | spin_unlock_bh(&sta->lock); |
c9370197 JL |
560 | |
561 | if (deactivated) | |
562 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON); | |
c3896d2c LCC |
563 | } |
564 | ||
c3896d2c | 565 | |
f698d856 | 566 | void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_mgmt *mgmt, |
c3896d2c LCC |
567 | size_t len, struct ieee80211_rx_status *rx_status) |
568 | { | |
c3896d2c LCC |
569 | struct ieee802_11_elems elems; |
570 | struct sta_info *sta; | |
571 | enum plink_event event; | |
54ef656b | 572 | enum ieee80211_self_protected_actioncode ftype; |
c3896d2c | 573 | size_t baselen; |
57aac7c5 | 574 | bool matches_local = true; |
c3896d2c LCC |
575 | u8 ie_len; |
576 | u8 *baseaddr; | |
57aac7c5 | 577 | u32 changed = 0; |
c3896d2c | 578 | __le16 plid, llid, reason; |
1460dd15 | 579 | static const char *mplstates[] = { |
57cf8043 JC |
580 | [NL80211_PLINK_LISTEN] = "LISTEN", |
581 | [NL80211_PLINK_OPN_SNT] = "OPN-SNT", | |
582 | [NL80211_PLINK_OPN_RCVD] = "OPN-RCVD", | |
583 | [NL80211_PLINK_CNF_RCVD] = "CNF_RCVD", | |
584 | [NL80211_PLINK_ESTAB] = "ESTAB", | |
585 | [NL80211_PLINK_HOLDING] = "HOLDING", | |
586 | [NL80211_PLINK_BLOCKED] = "BLOCKED" | |
1460dd15 | 587 | }; |
c3896d2c | 588 | |
9c80d3dc JB |
589 | /* need action_code, aux */ |
590 | if (len < IEEE80211_MIN_ACTION_SIZE + 3) | |
591 | return; | |
592 | ||
c3896d2c | 593 | if (is_multicast_ether_addr(mgmt->da)) { |
bdcbd8e0 JB |
594 | mpl_dbg(sdata, |
595 | "Mesh plink: ignore frame from multicast address\n"); | |
c3896d2c LCC |
596 | return; |
597 | } | |
598 | ||
8db09850 TP |
599 | baseaddr = mgmt->u.action.u.self_prot.variable; |
600 | baselen = (u8 *) mgmt->u.action.u.self_prot.variable - (u8 *) mgmt; | |
601 | if (mgmt->u.action.u.self_prot.action_code == | |
54ef656b | 602 | WLAN_SP_MESH_PEERING_CONFIRM) { |
c3896d2c | 603 | baseaddr += 4; |
70bdb6b2 | 604 | baselen += 4; |
c3896d2c LCC |
605 | } |
606 | ieee802_11_parse_elems(baseaddr, len - baselen, &elems); | |
8db09850 | 607 | if (!elems.peering) { |
bdcbd8e0 JB |
608 | mpl_dbg(sdata, |
609 | "Mesh plink: missing necessary peer link ie\n"); | |
c3896d2c LCC |
610 | return; |
611 | } | |
b130e5ce JC |
612 | if (elems.rsn_len && |
613 | sdata->u.mesh.security == IEEE80211_MESH_SEC_NONE) { | |
bdcbd8e0 JB |
614 | mpl_dbg(sdata, |
615 | "Mesh plink: can't establish link with secure peer\n"); | |
5cff5e01 JC |
616 | return; |
617 | } | |
c3896d2c | 618 | |
8db09850 TP |
619 | ftype = mgmt->u.action.u.self_prot.action_code; |
620 | ie_len = elems.peering_len; | |
621 | if ((ftype == WLAN_SP_MESH_PEERING_OPEN && ie_len != 4) || | |
622 | (ftype == WLAN_SP_MESH_PEERING_CONFIRM && ie_len != 6) || | |
623 | (ftype == WLAN_SP_MESH_PEERING_CLOSE && ie_len != 6 | |
624 | && ie_len != 8)) { | |
bdcbd8e0 JB |
625 | mpl_dbg(sdata, |
626 | "Mesh plink: incorrect plink ie length %d %d\n", | |
627 | ftype, ie_len); | |
c3896d2c LCC |
628 | return; |
629 | } | |
630 | ||
54ef656b TP |
631 | if (ftype != WLAN_SP_MESH_PEERING_CLOSE && |
632 | (!elems.mesh_id || !elems.mesh_config)) { | |
bdcbd8e0 | 633 | mpl_dbg(sdata, "Mesh plink: missing necessary ie\n"); |
c3896d2c LCC |
634 | return; |
635 | } | |
636 | /* Note the lines below are correct, the llid in the frame is the plid | |
637 | * from the point of view of this host. | |
638 | */ | |
8db09850 | 639 | memcpy(&plid, PLINK_GET_LLID(elems.peering), 2); |
54ef656b | 640 | if (ftype == WLAN_SP_MESH_PEERING_CONFIRM || |
8db09850 TP |
641 | (ftype == WLAN_SP_MESH_PEERING_CLOSE && ie_len == 8)) |
642 | memcpy(&llid, PLINK_GET_PLID(elems.peering), 2); | |
c3896d2c | 643 | |
d0709a65 JB |
644 | rcu_read_lock(); |
645 | ||
abe60632 | 646 | sta = sta_info_get(sdata, mgmt->sa); |
54ef656b | 647 | if (!sta && ftype != WLAN_SP_MESH_PEERING_OPEN) { |
bdcbd8e0 | 648 | mpl_dbg(sdata, "Mesh plink: cls or cnf from unknown peer\n"); |
d0709a65 | 649 | rcu_read_unlock(); |
c3896d2c LCC |
650 | return; |
651 | } | |
652 | ||
55335137 | 653 | if (ftype == WLAN_SP_MESH_PEERING_OPEN && |
3d4f9699 | 654 | !rssi_threshold_check(sta, sdata)) { |
bdcbd8e0 | 655 | mpl_dbg(sdata, "Mesh plink: %pM does not meet rssi threshold\n", |
3d4f9699 | 656 | mgmt->sa); |
55335137 AN |
657 | rcu_read_unlock(); |
658 | return; | |
659 | } | |
660 | ||
c2c98fde | 661 | if (sta && !test_sta_flag(sta, WLAN_STA_AUTH)) { |
bdcbd8e0 | 662 | mpl_dbg(sdata, "Mesh plink: Action frame from non-authed peer\n"); |
53e80511 JC |
663 | rcu_read_unlock(); |
664 | return; | |
665 | } | |
666 | ||
57cf8043 | 667 | if (sta && sta->plink_state == NL80211_PLINK_BLOCKED) { |
d0709a65 | 668 | rcu_read_unlock(); |
c3896d2c LCC |
669 | return; |
670 | } | |
671 | ||
672 | /* Now we will figure out the appropriate event... */ | |
673 | event = PLINK_UNDEFINED; | |
54ef656b | 674 | if (ftype != WLAN_SP_MESH_PEERING_CLOSE && |
f743ff49 | 675 | !mesh_matches_local(sdata, &elems)) { |
d12c7452 | 676 | matches_local = false; |
c3896d2c | 677 | switch (ftype) { |
54ef656b | 678 | case WLAN_SP_MESH_PEERING_OPEN: |
c3896d2c LCC |
679 | event = OPN_RJCT; |
680 | break; | |
54ef656b | 681 | case WLAN_SP_MESH_PEERING_CONFIRM: |
c3896d2c LCC |
682 | event = CNF_RJCT; |
683 | break; | |
54ef656b | 684 | default: |
c3896d2c LCC |
685 | break; |
686 | } | |
d12c7452 CL |
687 | } |
688 | ||
689 | if (!sta && !matches_local) { | |
690 | rcu_read_unlock(); | |
54ef656b | 691 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
d12c7452 | 692 | llid = 0; |
54ef656b TP |
693 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
694 | mgmt->sa, llid, plid, reason); | |
d12c7452 | 695 | return; |
c3896d2c | 696 | } else if (!sta) { |
54ef656b | 697 | /* ftype == WLAN_SP_MESH_PEERING_OPEN */ |
c3896d2c | 698 | if (!mesh_plink_free_count(sdata)) { |
bdcbd8e0 | 699 | mpl_dbg(sdata, "Mesh plink error: no more free plinks\n"); |
73651ee6 JB |
700 | rcu_read_unlock(); |
701 | return; | |
702 | } | |
c3896d2c | 703 | event = OPN_ACPT; |
d12c7452 | 704 | } else if (matches_local) { |
c3896d2c | 705 | switch (ftype) { |
54ef656b | 706 | case WLAN_SP_MESH_PEERING_OPEN: |
c3896d2c | 707 | if (!mesh_plink_free_count(sdata) || |
d0709a65 | 708 | (sta->plid && sta->plid != plid)) |
c3896d2c LCC |
709 | event = OPN_IGNR; |
710 | else | |
711 | event = OPN_ACPT; | |
712 | break; | |
54ef656b | 713 | case WLAN_SP_MESH_PEERING_CONFIRM: |
c3896d2c | 714 | if (!mesh_plink_free_count(sdata) || |
d0709a65 | 715 | (sta->llid != llid || sta->plid != plid)) |
c3896d2c LCC |
716 | event = CNF_IGNR; |
717 | else | |
718 | event = CNF_ACPT; | |
719 | break; | |
54ef656b | 720 | case WLAN_SP_MESH_PEERING_CLOSE: |
57cf8043 | 721 | if (sta->plink_state == NL80211_PLINK_ESTAB) |
c3896d2c LCC |
722 | /* Do not check for llid or plid. This does not |
723 | * follow the standard but since multiple plinks | |
724 | * per sta are not supported, it is necessary in | |
725 | * order to avoid a livelock when MP A sees an | |
726 | * establish peer link to MP B but MP B does not | |
727 | * see it. This can be caused by a timeout in | |
728 | * B's peer link establishment or B beign | |
729 | * restarted. | |
730 | */ | |
731 | event = CLS_ACPT; | |
732 | else if (sta->plid != plid) | |
733 | event = CLS_IGNR; | |
734 | else if (ie_len == 7 && sta->llid != llid) | |
735 | event = CLS_IGNR; | |
736 | else | |
737 | event = CLS_ACPT; | |
738 | break; | |
739 | default: | |
bdcbd8e0 | 740 | mpl_dbg(sdata, "Mesh plink: unknown frame subtype\n"); |
d0709a65 | 741 | rcu_read_unlock(); |
c3896d2c LCC |
742 | return; |
743 | } | |
54ab1ffb TP |
744 | } |
745 | ||
746 | if (event == OPN_ACPT) { | |
747 | /* allocate sta entry if necessary and update info */ | |
f743ff49 | 748 | sta = mesh_peer_init(sdata, mgmt->sa, &elems); |
54ab1ffb | 749 | if (!sta) { |
bdcbd8e0 | 750 | mpl_dbg(sdata, "Mesh plink: failed to init peer!\n"); |
54ab1ffb TP |
751 | rcu_read_unlock(); |
752 | return; | |
753 | } | |
c3896d2c LCC |
754 | } |
755 | ||
bdcbd8e0 JB |
756 | mpl_dbg(sdata, |
757 | "Mesh plink (peer, state, llid, plid, event): %pM %s %d %d %d\n", | |
1460dd15 | 758 | mgmt->sa, mplstates[sta->plink_state], |
0c68ae26 JB |
759 | le16_to_cpu(sta->llid), le16_to_cpu(sta->plid), |
760 | event); | |
c3896d2c | 761 | reason = 0; |
54ab1ffb | 762 | spin_lock_bh(&sta->lock); |
c3896d2c LCC |
763 | switch (sta->plink_state) { |
764 | /* spin_unlock as soon as state is updated at each case */ | |
57cf8043 | 765 | case NL80211_PLINK_LISTEN: |
c3896d2c LCC |
766 | switch (event) { |
767 | case CLS_ACPT: | |
768 | mesh_plink_fsm_restart(sta); | |
07346f81 | 769 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
770 | break; |
771 | case OPN_ACPT: | |
57cf8043 | 772 | sta->plink_state = NL80211_PLINK_OPN_RCVD; |
c3896d2c LCC |
773 | sta->plid = plid; |
774 | get_random_bytes(&llid, 2); | |
775 | sta->llid = llid; | |
776 | mesh_plink_timer_set(sta, dot11MeshRetryTimeout(sdata)); | |
07346f81 | 777 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
778 | mesh_plink_frame_tx(sdata, |
779 | WLAN_SP_MESH_PEERING_OPEN, | |
780 | sta->sta.addr, llid, 0, 0); | |
781 | mesh_plink_frame_tx(sdata, | |
782 | WLAN_SP_MESH_PEERING_CONFIRM, | |
783 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
784 | break; |
785 | default: | |
07346f81 | 786 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
787 | break; |
788 | } | |
789 | break; | |
790 | ||
57cf8043 | 791 | case NL80211_PLINK_OPN_SNT: |
c3896d2c LCC |
792 | switch (event) { |
793 | case OPN_RJCT: | |
794 | case CNF_RJCT: | |
54ef656b | 795 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
c3896d2c LCC |
796 | case CLS_ACPT: |
797 | if (!reason) | |
54ef656b | 798 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
c3896d2c | 799 | sta->reason = reason; |
57cf8043 | 800 | sta->plink_state = NL80211_PLINK_HOLDING; |
c3896d2c LCC |
801 | if (!mod_plink_timer(sta, |
802 | dot11MeshHoldingTimeout(sdata))) | |
803 | sta->ignore_plink_timer = true; | |
804 | ||
805 | llid = sta->llid; | |
07346f81 | 806 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
807 | mesh_plink_frame_tx(sdata, |
808 | WLAN_SP_MESH_PEERING_CLOSE, | |
809 | sta->sta.addr, llid, plid, reason); | |
c3896d2c LCC |
810 | break; |
811 | case OPN_ACPT: | |
812 | /* retry timer is left untouched */ | |
57cf8043 | 813 | sta->plink_state = NL80211_PLINK_OPN_RCVD; |
c3896d2c LCC |
814 | sta->plid = plid; |
815 | llid = sta->llid; | |
07346f81 | 816 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
817 | mesh_plink_frame_tx(sdata, |
818 | WLAN_SP_MESH_PEERING_CONFIRM, | |
819 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
820 | break; |
821 | case CNF_ACPT: | |
57cf8043 | 822 | sta->plink_state = NL80211_PLINK_CNF_RCVD; |
c3896d2c LCC |
823 | if (!mod_plink_timer(sta, |
824 | dot11MeshConfirmTimeout(sdata))) | |
825 | sta->ignore_plink_timer = true; | |
826 | ||
07346f81 | 827 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
828 | break; |
829 | default: | |
07346f81 | 830 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
831 | break; |
832 | } | |
833 | break; | |
834 | ||
57cf8043 | 835 | case NL80211_PLINK_OPN_RCVD: |
c3896d2c LCC |
836 | switch (event) { |
837 | case OPN_RJCT: | |
838 | case CNF_RJCT: | |
54ef656b | 839 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
c3896d2c LCC |
840 | case CLS_ACPT: |
841 | if (!reason) | |
54ef656b | 842 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
c3896d2c | 843 | sta->reason = reason; |
57cf8043 | 844 | sta->plink_state = NL80211_PLINK_HOLDING; |
c3896d2c LCC |
845 | if (!mod_plink_timer(sta, |
846 | dot11MeshHoldingTimeout(sdata))) | |
847 | sta->ignore_plink_timer = true; | |
848 | ||
849 | llid = sta->llid; | |
07346f81 | 850 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
851 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
852 | sta->sta.addr, llid, plid, reason); | |
c3896d2c LCC |
853 | break; |
854 | case OPN_ACPT: | |
855 | llid = sta->llid; | |
07346f81 | 856 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
857 | mesh_plink_frame_tx(sdata, |
858 | WLAN_SP_MESH_PEERING_CONFIRM, | |
859 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
860 | break; |
861 | case CNF_ACPT: | |
d0709a65 | 862 | del_timer(&sta->plink_timer); |
57cf8043 | 863 | sta->plink_state = NL80211_PLINK_ESTAB; |
07346f81 | 864 | spin_unlock_bh(&sta->lock); |
c9370197 | 865 | mesh_plink_inc_estab_count(sdata); |
57aac7c5 AN |
866 | changed |= mesh_set_ht_prot_mode(sdata); |
867 | changed |= BSS_CHANGED_BEACON; | |
bdcbd8e0 | 868 | mpl_dbg(sdata, "Mesh plink with %pM ESTABLISHED\n", |
0c68ae26 | 869 | sta->sta.addr); |
c3896d2c LCC |
870 | break; |
871 | default: | |
07346f81 | 872 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
873 | break; |
874 | } | |
875 | break; | |
876 | ||
57cf8043 | 877 | case NL80211_PLINK_CNF_RCVD: |
c3896d2c LCC |
878 | switch (event) { |
879 | case OPN_RJCT: | |
880 | case CNF_RJCT: | |
54ef656b | 881 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
c3896d2c LCC |
882 | case CLS_ACPT: |
883 | if (!reason) | |
54ef656b | 884 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
c3896d2c | 885 | sta->reason = reason; |
57cf8043 | 886 | sta->plink_state = NL80211_PLINK_HOLDING; |
c3896d2c LCC |
887 | if (!mod_plink_timer(sta, |
888 | dot11MeshHoldingTimeout(sdata))) | |
889 | sta->ignore_plink_timer = true; | |
890 | ||
891 | llid = sta->llid; | |
07346f81 | 892 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
893 | mesh_plink_frame_tx(sdata, |
894 | WLAN_SP_MESH_PEERING_CLOSE, | |
895 | sta->sta.addr, llid, plid, reason); | |
ff59dc76 | 896 | break; |
c3896d2c | 897 | case OPN_ACPT: |
d0709a65 | 898 | del_timer(&sta->plink_timer); |
57cf8043 | 899 | sta->plink_state = NL80211_PLINK_ESTAB; |
07346f81 | 900 | spin_unlock_bh(&sta->lock); |
c9370197 | 901 | mesh_plink_inc_estab_count(sdata); |
57aac7c5 AN |
902 | changed |= mesh_set_ht_prot_mode(sdata); |
903 | changed |= BSS_CHANGED_BEACON; | |
bdcbd8e0 | 904 | mpl_dbg(sdata, "Mesh plink with %pM ESTABLISHED\n", |
0c68ae26 | 905 | sta->sta.addr); |
54ef656b TP |
906 | mesh_plink_frame_tx(sdata, |
907 | WLAN_SP_MESH_PEERING_CONFIRM, | |
908 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
909 | break; |
910 | default: | |
07346f81 | 911 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
912 | break; |
913 | } | |
914 | break; | |
915 | ||
57cf8043 | 916 | case NL80211_PLINK_ESTAB: |
c3896d2c LCC |
917 | switch (event) { |
918 | case CLS_ACPT: | |
54ef656b | 919 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
c3896d2c | 920 | sta->reason = reason; |
57aac7c5 | 921 | __mesh_plink_deactivate(sta); |
57cf8043 | 922 | sta->plink_state = NL80211_PLINK_HOLDING; |
c3896d2c | 923 | llid = sta->llid; |
d0709a65 | 924 | mod_plink_timer(sta, dot11MeshHoldingTimeout(sdata)); |
07346f81 | 925 | spin_unlock_bh(&sta->lock); |
57aac7c5 AN |
926 | changed |= mesh_set_ht_prot_mode(sdata); |
927 | changed |= BSS_CHANGED_BEACON; | |
54ef656b TP |
928 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
929 | sta->sta.addr, llid, plid, reason); | |
c3896d2c LCC |
930 | break; |
931 | case OPN_ACPT: | |
932 | llid = sta->llid; | |
07346f81 | 933 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
934 | mesh_plink_frame_tx(sdata, |
935 | WLAN_SP_MESH_PEERING_CONFIRM, | |
936 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
937 | break; |
938 | default: | |
07346f81 | 939 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
940 | break; |
941 | } | |
942 | break; | |
57cf8043 | 943 | case NL80211_PLINK_HOLDING: |
c3896d2c LCC |
944 | switch (event) { |
945 | case CLS_ACPT: | |
d0709a65 | 946 | if (del_timer(&sta->plink_timer)) |
c3896d2c | 947 | sta->ignore_plink_timer = 1; |
c3896d2c | 948 | mesh_plink_fsm_restart(sta); |
07346f81 | 949 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
950 | break; |
951 | case OPN_ACPT: | |
952 | case CNF_ACPT: | |
953 | case OPN_RJCT: | |
954 | case CNF_RJCT: | |
955 | llid = sta->llid; | |
956 | reason = sta->reason; | |
07346f81 | 957 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
958 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
959 | sta->sta.addr, llid, plid, reason); | |
c3896d2c LCC |
960 | break; |
961 | default: | |
07346f81 | 962 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
963 | } |
964 | break; | |
965 | default: | |
b4e08ea1 | 966 | /* should not get here, PLINK_BLOCKED is dealt with at the |
3ad2f3fb | 967 | * beginning of the function |
c3896d2c | 968 | */ |
07346f81 | 969 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
970 | break; |
971 | } | |
d0709a65 JB |
972 | |
973 | rcu_read_unlock(); | |
57aac7c5 AN |
974 | |
975 | if (changed) | |
976 | ieee80211_bss_info_change_notify(sdata, changed); | |
c3896d2c | 977 | } |