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 | 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; |
c3896d2c LCC |
220 | struct ieee80211_mgmt *mgmt; |
221 | bool include_plid = false; | |
8db09850 | 222 | u16 peering_proto = 0; |
3b69a9c5 TP |
223 | u8 *pos, ie_len = 4; |
224 | int hdr_len = offsetof(struct ieee80211_mgmt, u.action.u.self_prot) + | |
225 | sizeof(mgmt->u.action.u.self_prot); | |
226 | ||
65e8b0cc | 227 | skb = dev_alloc_skb(local->tx_headroom + |
3b69a9c5 TP |
228 | hdr_len + |
229 | 2 + /* capability info */ | |
230 | 2 + /* AID */ | |
231 | 2 + 8 + /* supported rates */ | |
232 | 2 + (IEEE80211_MAX_SUPP_RATES - 8) + | |
233 | 2 + sdata->u.mesh.mesh_id_len + | |
234 | 2 + sizeof(struct ieee80211_meshconf_ie) + | |
176f3608 | 235 | 2 + sizeof(struct ieee80211_ht_cap) + |
074d46d1 | 236 | 2 + sizeof(struct ieee80211_ht_operation) + |
3b69a9c5 TP |
237 | 2 + 8 + /* peering IE */ |
238 | sdata->u.mesh.ie_len); | |
c3896d2c LCC |
239 | if (!skb) |
240 | return -1; | |
65e8b0cc | 241 | skb_reserve(skb, local->tx_headroom); |
3b69a9c5 TP |
242 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, hdr_len); |
243 | memset(mgmt, 0, hdr_len); | |
e7827a70 HH |
244 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
245 | IEEE80211_STYPE_ACTION); | |
c3896d2c | 246 | memcpy(mgmt->da, da, ETH_ALEN); |
47846c9b | 247 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); |
915b5c50 | 248 | memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN); |
8db09850 TP |
249 | mgmt->u.action.category = WLAN_CATEGORY_SELF_PROTECTED; |
250 | mgmt->u.action.u.self_prot.action_code = action; | |
c3896d2c | 251 | |
8db09850 TP |
252 | if (action != WLAN_SP_MESH_PEERING_CLOSE) { |
253 | /* capability info */ | |
254 | pos = skb_put(skb, 2); | |
255 | memset(pos, 0, 2); | |
54ef656b | 256 | if (action == WLAN_SP_MESH_PEERING_CONFIRM) { |
8db09850 TP |
257 | /* AID */ |
258 | pos = skb_put(skb, 2); | |
77fa76bb | 259 | memcpy(pos + 2, &plid, 2); |
c3896d2c | 260 | } |
fc8a7321 JB |
261 | if (ieee80211_add_srates_ie(sdata, skb, true) || |
262 | ieee80211_add_ext_srates_ie(sdata, skb, true) || | |
082ebb0c TP |
263 | mesh_add_rsn_ie(skb, sdata) || |
264 | mesh_add_meshid_ie(skb, sdata) || | |
265 | mesh_add_meshconf_ie(skb, sdata)) | |
266 | return -1; | |
8db09850 TP |
267 | } else { /* WLAN_SP_MESH_PEERING_CLOSE */ |
268 | if (mesh_add_meshid_ie(skb, sdata)) | |
269 | return -1; | |
c3896d2c LCC |
270 | } |
271 | ||
8db09850 | 272 | /* Add Mesh Peering Management element */ |
c3896d2c | 273 | switch (action) { |
54ef656b | 274 | case WLAN_SP_MESH_PEERING_OPEN: |
c3896d2c | 275 | break; |
54ef656b | 276 | case WLAN_SP_MESH_PEERING_CONFIRM: |
8db09850 | 277 | ie_len += 2; |
c3896d2c LCC |
278 | include_plid = true; |
279 | break; | |
54ef656b | 280 | case WLAN_SP_MESH_PEERING_CLOSE: |
8db09850 TP |
281 | if (plid) { |
282 | ie_len += 2; | |
c3896d2c LCC |
283 | include_plid = true; |
284 | } | |
8db09850 | 285 | ie_len += 2; /* reason code */ |
c3896d2c | 286 | break; |
8db09850 TP |
287 | default: |
288 | return -EINVAL; | |
c3896d2c LCC |
289 | } |
290 | ||
8db09850 TP |
291 | if (WARN_ON(skb_tailroom(skb) < 2 + ie_len)) |
292 | return -ENOMEM; | |
293 | ||
c3896d2c | 294 | pos = skb_put(skb, 2 + ie_len); |
8db09850 | 295 | *pos++ = WLAN_EID_PEER_MGMT; |
c3896d2c | 296 | *pos++ = ie_len; |
8db09850 TP |
297 | memcpy(pos, &peering_proto, 2); |
298 | pos += 2; | |
c3896d2c | 299 | memcpy(pos, &llid, 2); |
8db09850 | 300 | pos += 2; |
c3896d2c | 301 | if (include_plid) { |
c3896d2c | 302 | memcpy(pos, &plid, 2); |
8db09850 | 303 | pos += 2; |
c3896d2c | 304 | } |
54ef656b | 305 | if (action == WLAN_SP_MESH_PEERING_CLOSE) { |
c3896d2c | 306 | memcpy(pos, &reason, 2); |
8db09850 | 307 | pos += 2; |
c3896d2c | 308 | } |
176f3608 TP |
309 | |
310 | if (action != WLAN_SP_MESH_PEERING_CLOSE) { | |
311 | if (mesh_add_ht_cap_ie(skb, sdata) || | |
074d46d1 | 312 | mesh_add_ht_oper_ie(skb, sdata)) |
176f3608 TP |
313 | return -1; |
314 | } | |
315 | ||
8db09850 TP |
316 | if (mesh_add_vendor_ies(skb, sdata)) |
317 | return -1; | |
c3896d2c | 318 | |
62ae67be | 319 | ieee80211_tx_skb(sdata, skb); |
c3896d2c LCC |
320 | return 0; |
321 | } | |
322 | ||
2c53040f BH |
323 | /** |
324 | * mesh_peer_init - initialize new mesh peer and return resulting sta_info | |
54ab1ffb TP |
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) { |
f5c56814 TP |
348 | /* Userspace handles peer allocation when security is enabled */ |
349 | if (sdata->u.mesh.security & IEEE80211_MESH_SEC_AUTHED) { | |
350 | cfg80211_notify_new_peer_candidate(sdata->dev, addr, | |
351 | elems->ie_start, | |
352 | elems->total_len, | |
353 | GFP_ATOMIC); | |
354 | return NULL; | |
355 | } | |
356 | ||
54ab1ffb | 357 | sta = mesh_plink_alloc(sdata, addr); |
34e89507 | 358 | if (!sta) |
54ab1ffb | 359 | return NULL; |
e87278e7 | 360 | insert = true; |
c3896d2c LCC |
361 | } |
362 | ||
54ab1ffb | 363 | spin_lock_bh(&sta->lock); |
c3896d2c | 364 | sta->last_rx = jiffies; |
f743ff49 | 365 | sta->sta.supp_rates[band] = rates; |
e76781e4 TP |
366 | if (elems->ht_cap_elem && |
367 | sdata->local->_oper_channel_type != NL80211_CHAN_NO_HT) | |
54ab1ffb TP |
368 | ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, |
369 | elems->ht_cap_elem, | |
370 | &sta->sta.ht_cap); | |
371 | else | |
372 | memset(&sta->sta.ht_cap, 0, sizeof(sta->sta.ht_cap)); | |
373 | ||
57aac7c5 | 374 | if (elems->ht_operation) { |
c7d25828 TP |
375 | if (!(elems->ht_operation->ht_param & |
376 | IEEE80211_HT_PARAM_CHAN_WIDTH_ANY)) | |
377 | sta->sta.ht_cap.cap &= | |
378 | ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
57aac7c5 AN |
379 | sta->ch_type = |
380 | ieee80211_ht_oper_to_channel_type(elems->ht_operation); | |
381 | } | |
c7d25828 | 382 | |
54ab1ffb TP |
383 | rate_control_rate_init(sta); |
384 | spin_unlock_bh(&sta->lock); | |
385 | ||
e87278e7 TP |
386 | if (insert && sta_info_insert(sta)) |
387 | return NULL; | |
388 | ||
54ab1ffb TP |
389 | return sta; |
390 | } | |
391 | ||
f743ff49 TP |
392 | void mesh_neighbour_update(struct ieee80211_sub_if_data *sdata, |
393 | u8 *hw_addr, | |
54ab1ffb TP |
394 | struct ieee802_11_elems *elems) |
395 | { | |
396 | struct sta_info *sta; | |
397 | ||
54ab1ffb | 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 | } | |
bdcbd8e0 JB |
438 | mpl_dbg(sta->sdata, |
439 | "Mesh plink timer for %pM fired on state %d\n", | |
0c68ae26 | 440 | sta->sta.addr, sta->plink_state); |
c3896d2c LCC |
441 | reason = 0; |
442 | llid = sta->llid; | |
443 | plid = sta->plid; | |
d0709a65 | 444 | sdata = sta->sdata; |
c3896d2c LCC |
445 | |
446 | switch (sta->plink_state) { | |
57cf8043 JC |
447 | case NL80211_PLINK_OPN_RCVD: |
448 | case NL80211_PLINK_OPN_SNT: | |
c3896d2c LCC |
449 | /* retry timer */ |
450 | if (sta->plink_retries < dot11MeshMaxRetries(sdata)) { | |
451 | u32 rand; | |
bdcbd8e0 JB |
452 | mpl_dbg(sta->sdata, |
453 | "Mesh plink for %pM (retry, timeout): %d %d\n", | |
0c68ae26 JB |
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); |
bdcbd8e0 JB |
533 | mpl_dbg(sdata, |
534 | "Mesh plink: starting establishment with %pM\n", | |
0c68ae26 | 535 | sta->sta.addr); |
c3896d2c | 536 | |
54ef656b | 537 | return mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_OPEN, |
17741cdc | 538 | sta->sta.addr, llid, 0, 0); |
c3896d2c LCC |
539 | } |
540 | ||
541 | void mesh_plink_block(struct sta_info *sta) | |
542 | { | |
c9370197 JL |
543 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
544 | bool deactivated; | |
545 | ||
07346f81 | 546 | spin_lock_bh(&sta->lock); |
c9370197 | 547 | deactivated = __mesh_plink_deactivate(sta); |
57cf8043 | 548 | sta->plink_state = NL80211_PLINK_BLOCKED; |
07346f81 | 549 | spin_unlock_bh(&sta->lock); |
c9370197 JL |
550 | |
551 | if (deactivated) | |
552 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON); | |
c3896d2c LCC |
553 | } |
554 | ||
c3896d2c | 555 | |
f698d856 | 556 | void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_mgmt *mgmt, |
c3896d2c LCC |
557 | size_t len, struct ieee80211_rx_status *rx_status) |
558 | { | |
c3896d2c LCC |
559 | struct ieee802_11_elems elems; |
560 | struct sta_info *sta; | |
561 | enum plink_event event; | |
54ef656b | 562 | enum ieee80211_self_protected_actioncode ftype; |
c3896d2c | 563 | size_t baselen; |
57aac7c5 | 564 | bool matches_local = true; |
c3896d2c LCC |
565 | u8 ie_len; |
566 | u8 *baseaddr; | |
57aac7c5 | 567 | u32 changed = 0; |
c3896d2c | 568 | __le16 plid, llid, reason; |
1460dd15 | 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 | 577 | }; |
c3896d2c | 578 | |
9c80d3dc JB |
579 | /* need action_code, aux */ |
580 | if (len < IEEE80211_MIN_ACTION_SIZE + 3) | |
581 | return; | |
582 | ||
c3896d2c | 583 | if (is_multicast_ether_addr(mgmt->da)) { |
bdcbd8e0 JB |
584 | mpl_dbg(sdata, |
585 | "Mesh plink: ignore frame from multicast address\n"); | |
c3896d2c LCC |
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) { |
bdcbd8e0 JB |
598 | mpl_dbg(sdata, |
599 | "Mesh plink: missing necessary peer link ie\n"); | |
c3896d2c LCC |
600 | return; |
601 | } | |
b130e5ce JC |
602 | if (elems.rsn_len && |
603 | sdata->u.mesh.security == IEEE80211_MESH_SEC_NONE) { | |
bdcbd8e0 JB |
604 | mpl_dbg(sdata, |
605 | "Mesh plink: can't establish link with secure peer\n"); | |
5cff5e01 JC |
606 | return; |
607 | } | |
c3896d2c | 608 | |
8db09850 TP |
609 | ftype = mgmt->u.action.u.self_prot.action_code; |
610 | ie_len = elems.peering_len; | |
611 | if ((ftype == WLAN_SP_MESH_PEERING_OPEN && ie_len != 4) || | |
612 | (ftype == WLAN_SP_MESH_PEERING_CONFIRM && ie_len != 6) || | |
613 | (ftype == WLAN_SP_MESH_PEERING_CLOSE && ie_len != 6 | |
614 | && ie_len != 8)) { | |
bdcbd8e0 JB |
615 | mpl_dbg(sdata, |
616 | "Mesh plink: incorrect plink ie length %d %d\n", | |
617 | ftype, ie_len); | |
c3896d2c LCC |
618 | return; |
619 | } | |
620 | ||
54ef656b TP |
621 | if (ftype != WLAN_SP_MESH_PEERING_CLOSE && |
622 | (!elems.mesh_id || !elems.mesh_config)) { | |
bdcbd8e0 | 623 | mpl_dbg(sdata, "Mesh plink: missing necessary ie\n"); |
c3896d2c LCC |
624 | return; |
625 | } | |
626 | /* Note the lines below are correct, the llid in the frame is the plid | |
627 | * from the point of view of this host. | |
628 | */ | |
8db09850 | 629 | memcpy(&plid, PLINK_GET_LLID(elems.peering), 2); |
54ef656b | 630 | if (ftype == WLAN_SP_MESH_PEERING_CONFIRM || |
8db09850 TP |
631 | (ftype == WLAN_SP_MESH_PEERING_CLOSE && ie_len == 8)) |
632 | memcpy(&llid, PLINK_GET_PLID(elems.peering), 2); | |
c3896d2c | 633 | |
d0709a65 JB |
634 | rcu_read_lock(); |
635 | ||
abe60632 | 636 | sta = sta_info_get(sdata, mgmt->sa); |
54ef656b | 637 | if (!sta && ftype != WLAN_SP_MESH_PEERING_OPEN) { |
bdcbd8e0 | 638 | mpl_dbg(sdata, "Mesh plink: cls or cnf from unknown peer\n"); |
d0709a65 | 639 | rcu_read_unlock(); |
c3896d2c LCC |
640 | return; |
641 | } | |
642 | ||
55335137 | 643 | if (ftype == WLAN_SP_MESH_PEERING_OPEN && |
3d4f9699 | 644 | !rssi_threshold_check(sta, sdata)) { |
bdcbd8e0 | 645 | mpl_dbg(sdata, "Mesh plink: %pM does not meet rssi threshold\n", |
3d4f9699 | 646 | mgmt->sa); |
55335137 AN |
647 | rcu_read_unlock(); |
648 | return; | |
649 | } | |
650 | ||
c2c98fde | 651 | if (sta && !test_sta_flag(sta, WLAN_STA_AUTH)) { |
bdcbd8e0 | 652 | mpl_dbg(sdata, "Mesh plink: Action frame from non-authed peer\n"); |
53e80511 JC |
653 | rcu_read_unlock(); |
654 | return; | |
655 | } | |
656 | ||
57cf8043 | 657 | if (sta && sta->plink_state == NL80211_PLINK_BLOCKED) { |
d0709a65 | 658 | rcu_read_unlock(); |
c3896d2c LCC |
659 | return; |
660 | } | |
661 | ||
662 | /* Now we will figure out the appropriate event... */ | |
663 | event = PLINK_UNDEFINED; | |
54ef656b | 664 | if (ftype != WLAN_SP_MESH_PEERING_CLOSE && |
f743ff49 | 665 | !mesh_matches_local(sdata, &elems)) { |
d12c7452 | 666 | matches_local = false; |
c3896d2c | 667 | switch (ftype) { |
54ef656b | 668 | case WLAN_SP_MESH_PEERING_OPEN: |
c3896d2c LCC |
669 | event = OPN_RJCT; |
670 | break; | |
54ef656b | 671 | case WLAN_SP_MESH_PEERING_CONFIRM: |
c3896d2c LCC |
672 | event = CNF_RJCT; |
673 | break; | |
54ef656b | 674 | default: |
c3896d2c LCC |
675 | break; |
676 | } | |
d12c7452 CL |
677 | } |
678 | ||
679 | if (!sta && !matches_local) { | |
680 | rcu_read_unlock(); | |
54ef656b | 681 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
d12c7452 | 682 | llid = 0; |
54ef656b TP |
683 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
684 | mgmt->sa, llid, plid, reason); | |
d12c7452 | 685 | return; |
c3896d2c | 686 | } else if (!sta) { |
54ef656b | 687 | /* ftype == WLAN_SP_MESH_PEERING_OPEN */ |
c3896d2c | 688 | if (!mesh_plink_free_count(sdata)) { |
bdcbd8e0 | 689 | mpl_dbg(sdata, "Mesh plink error: no more free plinks\n"); |
73651ee6 JB |
690 | rcu_read_unlock(); |
691 | return; | |
692 | } | |
c3896d2c | 693 | event = OPN_ACPT; |
d12c7452 | 694 | } else if (matches_local) { |
c3896d2c | 695 | switch (ftype) { |
54ef656b | 696 | case WLAN_SP_MESH_PEERING_OPEN: |
c3896d2c | 697 | if (!mesh_plink_free_count(sdata) || |
d0709a65 | 698 | (sta->plid && sta->plid != plid)) |
c3896d2c LCC |
699 | event = OPN_IGNR; |
700 | else | |
701 | event = OPN_ACPT; | |
702 | break; | |
54ef656b | 703 | case WLAN_SP_MESH_PEERING_CONFIRM: |
c3896d2c | 704 | if (!mesh_plink_free_count(sdata) || |
d0709a65 | 705 | (sta->llid != llid || sta->plid != plid)) |
c3896d2c LCC |
706 | event = CNF_IGNR; |
707 | else | |
708 | event = CNF_ACPT; | |
709 | break; | |
54ef656b | 710 | case WLAN_SP_MESH_PEERING_CLOSE: |
57cf8043 | 711 | if (sta->plink_state == NL80211_PLINK_ESTAB) |
c3896d2c LCC |
712 | /* Do not check for llid or plid. This does not |
713 | * follow the standard but since multiple plinks | |
714 | * per sta are not supported, it is necessary in | |
715 | * order to avoid a livelock when MP A sees an | |
716 | * establish peer link to MP B but MP B does not | |
717 | * see it. This can be caused by a timeout in | |
718 | * B's peer link establishment or B beign | |
719 | * restarted. | |
720 | */ | |
721 | event = CLS_ACPT; | |
722 | else if (sta->plid != plid) | |
723 | event = CLS_IGNR; | |
724 | else if (ie_len == 7 && sta->llid != llid) | |
725 | event = CLS_IGNR; | |
726 | else | |
727 | event = CLS_ACPT; | |
728 | break; | |
729 | default: | |
bdcbd8e0 | 730 | mpl_dbg(sdata, "Mesh plink: unknown frame subtype\n"); |
d0709a65 | 731 | rcu_read_unlock(); |
c3896d2c LCC |
732 | return; |
733 | } | |
54ab1ffb TP |
734 | } |
735 | ||
736 | if (event == OPN_ACPT) { | |
737 | /* allocate sta entry if necessary and update info */ | |
f743ff49 | 738 | sta = mesh_peer_init(sdata, mgmt->sa, &elems); |
54ab1ffb | 739 | if (!sta) { |
bdcbd8e0 | 740 | mpl_dbg(sdata, "Mesh plink: failed to init peer!\n"); |
54ab1ffb TP |
741 | rcu_read_unlock(); |
742 | return; | |
743 | } | |
c3896d2c LCC |
744 | } |
745 | ||
bdcbd8e0 JB |
746 | mpl_dbg(sdata, |
747 | "Mesh plink (peer, state, llid, plid, event): %pM %s %d %d %d\n", | |
1460dd15 | 748 | mgmt->sa, mplstates[sta->plink_state], |
0c68ae26 JB |
749 | le16_to_cpu(sta->llid), le16_to_cpu(sta->plid), |
750 | event); | |
c3896d2c | 751 | reason = 0; |
54ab1ffb | 752 | spin_lock_bh(&sta->lock); |
c3896d2c LCC |
753 | switch (sta->plink_state) { |
754 | /* spin_unlock as soon as state is updated at each case */ | |
57cf8043 | 755 | case NL80211_PLINK_LISTEN: |
c3896d2c LCC |
756 | switch (event) { |
757 | case CLS_ACPT: | |
758 | mesh_plink_fsm_restart(sta); | |
07346f81 | 759 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
760 | break; |
761 | case OPN_ACPT: | |
57cf8043 | 762 | sta->plink_state = NL80211_PLINK_OPN_RCVD; |
c3896d2c LCC |
763 | sta->plid = plid; |
764 | get_random_bytes(&llid, 2); | |
765 | sta->llid = llid; | |
766 | mesh_plink_timer_set(sta, dot11MeshRetryTimeout(sdata)); | |
07346f81 | 767 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
768 | mesh_plink_frame_tx(sdata, |
769 | WLAN_SP_MESH_PEERING_OPEN, | |
770 | sta->sta.addr, llid, 0, 0); | |
771 | mesh_plink_frame_tx(sdata, | |
772 | WLAN_SP_MESH_PEERING_CONFIRM, | |
773 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
774 | break; |
775 | default: | |
07346f81 | 776 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
777 | break; |
778 | } | |
779 | break; | |
780 | ||
57cf8043 | 781 | case NL80211_PLINK_OPN_SNT: |
c3896d2c LCC |
782 | switch (event) { |
783 | case OPN_RJCT: | |
784 | case CNF_RJCT: | |
54ef656b | 785 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
c3896d2c LCC |
786 | case CLS_ACPT: |
787 | if (!reason) | |
54ef656b | 788 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
c3896d2c | 789 | sta->reason = reason; |
57cf8043 | 790 | sta->plink_state = NL80211_PLINK_HOLDING; |
c3896d2c LCC |
791 | if (!mod_plink_timer(sta, |
792 | dot11MeshHoldingTimeout(sdata))) | |
793 | sta->ignore_plink_timer = true; | |
794 | ||
795 | llid = sta->llid; | |
07346f81 | 796 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
797 | mesh_plink_frame_tx(sdata, |
798 | WLAN_SP_MESH_PEERING_CLOSE, | |
799 | sta->sta.addr, llid, plid, reason); | |
c3896d2c LCC |
800 | break; |
801 | case OPN_ACPT: | |
802 | /* retry timer is left untouched */ | |
57cf8043 | 803 | sta->plink_state = NL80211_PLINK_OPN_RCVD; |
c3896d2c LCC |
804 | sta->plid = plid; |
805 | llid = sta->llid; | |
07346f81 | 806 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
807 | mesh_plink_frame_tx(sdata, |
808 | WLAN_SP_MESH_PEERING_CONFIRM, | |
809 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
810 | break; |
811 | case CNF_ACPT: | |
57cf8043 | 812 | sta->plink_state = NL80211_PLINK_CNF_RCVD; |
c3896d2c LCC |
813 | if (!mod_plink_timer(sta, |
814 | dot11MeshConfirmTimeout(sdata))) | |
815 | sta->ignore_plink_timer = true; | |
816 | ||
07346f81 | 817 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
818 | break; |
819 | default: | |
07346f81 | 820 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
821 | break; |
822 | } | |
823 | break; | |
824 | ||
57cf8043 | 825 | case NL80211_PLINK_OPN_RCVD: |
c3896d2c LCC |
826 | switch (event) { |
827 | case OPN_RJCT: | |
828 | case CNF_RJCT: | |
54ef656b | 829 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
c3896d2c LCC |
830 | case CLS_ACPT: |
831 | if (!reason) | |
54ef656b | 832 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
c3896d2c | 833 | sta->reason = reason; |
57cf8043 | 834 | sta->plink_state = NL80211_PLINK_HOLDING; |
c3896d2c LCC |
835 | if (!mod_plink_timer(sta, |
836 | dot11MeshHoldingTimeout(sdata))) | |
837 | sta->ignore_plink_timer = true; | |
838 | ||
839 | llid = sta->llid; | |
07346f81 | 840 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
841 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
842 | sta->sta.addr, llid, plid, reason); | |
c3896d2c LCC |
843 | break; |
844 | case OPN_ACPT: | |
845 | llid = sta->llid; | |
07346f81 | 846 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
847 | mesh_plink_frame_tx(sdata, |
848 | WLAN_SP_MESH_PEERING_CONFIRM, | |
849 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
850 | break; |
851 | case CNF_ACPT: | |
d0709a65 | 852 | del_timer(&sta->plink_timer); |
57cf8043 | 853 | sta->plink_state = NL80211_PLINK_ESTAB; |
07346f81 | 854 | spin_unlock_bh(&sta->lock); |
c9370197 | 855 | mesh_plink_inc_estab_count(sdata); |
57aac7c5 AN |
856 | changed |= mesh_set_ht_prot_mode(sdata); |
857 | changed |= BSS_CHANGED_BEACON; | |
bdcbd8e0 | 858 | mpl_dbg(sdata, "Mesh plink with %pM ESTABLISHED\n", |
0c68ae26 | 859 | sta->sta.addr); |
c3896d2c LCC |
860 | break; |
861 | default: | |
07346f81 | 862 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
863 | break; |
864 | } | |
865 | break; | |
866 | ||
57cf8043 | 867 | case NL80211_PLINK_CNF_RCVD: |
c3896d2c LCC |
868 | switch (event) { |
869 | case OPN_RJCT: | |
870 | case CNF_RJCT: | |
54ef656b | 871 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
c3896d2c LCC |
872 | case CLS_ACPT: |
873 | if (!reason) | |
54ef656b | 874 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
c3896d2c | 875 | sta->reason = reason; |
57cf8043 | 876 | sta->plink_state = NL80211_PLINK_HOLDING; |
c3896d2c LCC |
877 | if (!mod_plink_timer(sta, |
878 | dot11MeshHoldingTimeout(sdata))) | |
879 | sta->ignore_plink_timer = true; | |
880 | ||
881 | llid = sta->llid; | |
07346f81 | 882 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
883 | mesh_plink_frame_tx(sdata, |
884 | WLAN_SP_MESH_PEERING_CLOSE, | |
885 | sta->sta.addr, llid, plid, reason); | |
ff59dc76 | 886 | break; |
c3896d2c | 887 | case OPN_ACPT: |
d0709a65 | 888 | del_timer(&sta->plink_timer); |
57cf8043 | 889 | sta->plink_state = NL80211_PLINK_ESTAB; |
07346f81 | 890 | spin_unlock_bh(&sta->lock); |
c9370197 | 891 | mesh_plink_inc_estab_count(sdata); |
57aac7c5 AN |
892 | changed |= mesh_set_ht_prot_mode(sdata); |
893 | changed |= BSS_CHANGED_BEACON; | |
bdcbd8e0 | 894 | mpl_dbg(sdata, "Mesh plink with %pM ESTABLISHED\n", |
0c68ae26 | 895 | sta->sta.addr); |
54ef656b TP |
896 | mesh_plink_frame_tx(sdata, |
897 | WLAN_SP_MESH_PEERING_CONFIRM, | |
898 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
899 | break; |
900 | default: | |
07346f81 | 901 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
902 | break; |
903 | } | |
904 | break; | |
905 | ||
57cf8043 | 906 | case NL80211_PLINK_ESTAB: |
c3896d2c LCC |
907 | switch (event) { |
908 | case CLS_ACPT: | |
54ef656b | 909 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
c3896d2c | 910 | sta->reason = reason; |
57aac7c5 | 911 | __mesh_plink_deactivate(sta); |
57cf8043 | 912 | sta->plink_state = NL80211_PLINK_HOLDING; |
c3896d2c | 913 | llid = sta->llid; |
d0709a65 | 914 | mod_plink_timer(sta, dot11MeshHoldingTimeout(sdata)); |
07346f81 | 915 | spin_unlock_bh(&sta->lock); |
57aac7c5 AN |
916 | changed |= mesh_set_ht_prot_mode(sdata); |
917 | changed |= BSS_CHANGED_BEACON; | |
54ef656b TP |
918 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
919 | sta->sta.addr, llid, plid, reason); | |
c3896d2c LCC |
920 | break; |
921 | case OPN_ACPT: | |
922 | llid = sta->llid; | |
07346f81 | 923 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
924 | mesh_plink_frame_tx(sdata, |
925 | WLAN_SP_MESH_PEERING_CONFIRM, | |
926 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
927 | break; |
928 | default: | |
07346f81 | 929 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
930 | break; |
931 | } | |
932 | break; | |
57cf8043 | 933 | case NL80211_PLINK_HOLDING: |
c3896d2c LCC |
934 | switch (event) { |
935 | case CLS_ACPT: | |
d0709a65 | 936 | if (del_timer(&sta->plink_timer)) |
c3896d2c | 937 | sta->ignore_plink_timer = 1; |
c3896d2c | 938 | mesh_plink_fsm_restart(sta); |
07346f81 | 939 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
940 | break; |
941 | case OPN_ACPT: | |
942 | case CNF_ACPT: | |
943 | case OPN_RJCT: | |
944 | case CNF_RJCT: | |
945 | llid = sta->llid; | |
946 | reason = sta->reason; | |
07346f81 | 947 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
948 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
949 | sta->sta.addr, llid, plid, reason); | |
c3896d2c LCC |
950 | break; |
951 | default: | |
07346f81 | 952 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
953 | } |
954 | break; | |
955 | default: | |
b4e08ea1 | 956 | /* should not get here, PLINK_BLOCKED is dealt with at the |
3ad2f3fb | 957 | * beginning of the function |
c3896d2c | 958 | */ |
07346f81 | 959 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
960 | break; |
961 | } | |
d0709a65 JB |
962 | |
963 | rcu_read_unlock(); | |
57aac7c5 AN |
964 | |
965 | if (changed) | |
966 | ieee80211_bss_info_change_notify(sdata, changed); | |
c3896d2c | 967 | } |