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 | ||
cbf9322e AN |
102 | /* |
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 | } |
657c3e0c AN |
261 | if (ieee80211_add_srates_ie(&sdata->vif, skb, true) || |
262 | ieee80211_add_ext_srates_ie(&sdata->vif, 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 | ||
54ab1ffb TP |
323 | /* mesh_peer_init - initialize new mesh peer and return resulting sta_info |
324 | * | |
325 | * @sdata: local meshif | |
326 | * @addr: peer's address | |
54ab1ffb TP |
327 | * @elems: IEs from beacon or mesh peering frame |
328 | * | |
329 | * call under RCU | |
330 | */ | |
331 | static struct sta_info *mesh_peer_init(struct ieee80211_sub_if_data *sdata, | |
f743ff49 | 332 | u8 *addr, |
54ab1ffb | 333 | struct ieee802_11_elems *elems) |
c3896d2c | 334 | { |
f698d856 | 335 | struct ieee80211_local *local = sdata->local; |
f743ff49 | 336 | enum ieee80211_band band = local->oper_channel->band; |
54ab1ffb | 337 | struct ieee80211_supported_band *sband; |
f743ff49 | 338 | u32 rates, basic_rates = 0; |
c3896d2c | 339 | struct sta_info *sta; |
e87278e7 | 340 | bool insert = false; |
c3896d2c | 341 | |
f743ff49 TP |
342 | sband = local->hw.wiphy->bands[band]; |
343 | rates = ieee80211_sta_get_rates(local, elems, band, &basic_rates); | |
d0709a65 | 344 | |
54ab1ffb | 345 | sta = sta_info_get(sdata, addr); |
c3896d2c | 346 | if (!sta) { |
f5c56814 TP |
347 | /* Userspace handles peer allocation when security is enabled */ |
348 | if (sdata->u.mesh.security & IEEE80211_MESH_SEC_AUTHED) { | |
349 | cfg80211_notify_new_peer_candidate(sdata->dev, addr, | |
350 | elems->ie_start, | |
351 | elems->total_len, | |
352 | GFP_ATOMIC); | |
353 | return NULL; | |
354 | } | |
355 | ||
54ab1ffb | 356 | sta = mesh_plink_alloc(sdata, addr); |
34e89507 | 357 | if (!sta) |
54ab1ffb | 358 | return NULL; |
e87278e7 | 359 | insert = true; |
c3896d2c LCC |
360 | } |
361 | ||
54ab1ffb | 362 | spin_lock_bh(&sta->lock); |
c3896d2c | 363 | sta->last_rx = jiffies; |
f743ff49 | 364 | sta->sta.supp_rates[band] = rates; |
e76781e4 TP |
365 | if (elems->ht_cap_elem && |
366 | sdata->local->_oper_channel_type != NL80211_CHAN_NO_HT) | |
54ab1ffb TP |
367 | ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, |
368 | elems->ht_cap_elem, | |
369 | &sta->sta.ht_cap); | |
370 | else | |
371 | memset(&sta->sta.ht_cap, 0, sizeof(sta->sta.ht_cap)); | |
372 | ||
57aac7c5 | 373 | if (elems->ht_operation) { |
c7d25828 TP |
374 | if (!(elems->ht_operation->ht_param & |
375 | IEEE80211_HT_PARAM_CHAN_WIDTH_ANY)) | |
376 | sta->sta.ht_cap.cap &= | |
377 | ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
57aac7c5 AN |
378 | sta->ch_type = |
379 | ieee80211_ht_oper_to_channel_type(elems->ht_operation); | |
380 | } | |
c7d25828 | 381 | |
54ab1ffb TP |
382 | rate_control_rate_init(sta); |
383 | spin_unlock_bh(&sta->lock); | |
384 | ||
e87278e7 TP |
385 | if (insert && sta_info_insert(sta)) |
386 | return NULL; | |
387 | ||
54ab1ffb TP |
388 | return sta; |
389 | } | |
390 | ||
f743ff49 TP |
391 | void mesh_neighbour_update(struct ieee80211_sub_if_data *sdata, |
392 | u8 *hw_addr, | |
54ab1ffb TP |
393 | struct ieee802_11_elems *elems) |
394 | { | |
395 | struct sta_info *sta; | |
396 | ||
54ab1ffb | 397 | rcu_read_lock(); |
f743ff49 | 398 | sta = mesh_peer_init(sdata, hw_addr, elems); |
54ab1ffb TP |
399 | if (!sta) |
400 | goto out; | |
401 | ||
1570ca59 | 402 | if (mesh_peer_accepts_plinks(elems) && |
54ab1ffb TP |
403 | sta->plink_state == NL80211_PLINK_LISTEN && |
404 | sdata->u.mesh.accepting_plinks && | |
405 | sdata->u.mesh.mshcfg.auto_open_plinks && | |
406 | rssi_threshold_check(sta, sdata)) | |
c3896d2c LCC |
407 | mesh_plink_open(sta); |
408 | ||
54ab1ffb | 409 | out: |
d0709a65 | 410 | rcu_read_unlock(); |
c3896d2c LCC |
411 | } |
412 | ||
413 | static void mesh_plink_timer(unsigned long data) | |
414 | { | |
415 | struct sta_info *sta; | |
416 | __le16 llid, plid, reason; | |
c3896d2c | 417 | struct ieee80211_sub_if_data *sdata; |
c3896d2c | 418 | |
d0709a65 JB |
419 | /* |
420 | * This STA is valid because sta_info_destroy() will | |
421 | * del_timer_sync() this timer after having made sure | |
422 | * it cannot be readded (by deleting the plink.) | |
423 | */ | |
c3896d2c LCC |
424 | sta = (struct sta_info *) data; |
425 | ||
5bb644a0 JB |
426 | if (sta->sdata->local->quiescing) { |
427 | sta->plink_timer_was_running = true; | |
428 | return; | |
429 | } | |
430 | ||
07346f81 | 431 | spin_lock_bh(&sta->lock); |
c3896d2c LCC |
432 | if (sta->ignore_plink_timer) { |
433 | sta->ignore_plink_timer = false; | |
07346f81 | 434 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
435 | return; |
436 | } | |
bdcbd8e0 JB |
437 | mpl_dbg(sta->sdata, |
438 | "Mesh plink timer for %pM fired on state %d\n", | |
0c68ae26 | 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; | |
bdcbd8e0 JB |
451 | mpl_dbg(sta->sdata, |
452 | "Mesh plink for %pM (retry, timeout): %d %d\n", | |
0c68ae26 JB |
453 | sta->sta.addr, sta->plink_retries, |
454 | sta->plink_timeout); | |
c3896d2c LCC |
455 | get_random_bytes(&rand, sizeof(u32)); |
456 | sta->plink_timeout = sta->plink_timeout + | |
457 | rand % sta->plink_timeout; | |
458 | ++sta->plink_retries; | |
d0709a65 | 459 | mod_plink_timer(sta, sta->plink_timeout); |
07346f81 | 460 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
461 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_OPEN, |
462 | sta->sta.addr, llid, 0, 0); | |
c3896d2c LCC |
463 | break; |
464 | } | |
54ef656b | 465 | reason = cpu_to_le16(WLAN_REASON_MESH_MAX_RETRIES); |
c3896d2c | 466 | /* fall through on else */ |
57cf8043 | 467 | case NL80211_PLINK_CNF_RCVD: |
c3896d2c LCC |
468 | /* confirm timer */ |
469 | if (!reason) | |
54ef656b | 470 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIRM_TIMEOUT); |
57cf8043 | 471 | sta->plink_state = NL80211_PLINK_HOLDING; |
d0709a65 | 472 | mod_plink_timer(sta, dot11MeshHoldingTimeout(sdata)); |
07346f81 | 473 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
474 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
475 | sta->sta.addr, llid, plid, reason); | |
c3896d2c | 476 | break; |
57cf8043 | 477 | case NL80211_PLINK_HOLDING: |
c3896d2c | 478 | /* holding timer */ |
d0709a65 | 479 | del_timer(&sta->plink_timer); |
c3896d2c | 480 | mesh_plink_fsm_restart(sta); |
07346f81 | 481 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
482 | break; |
483 | default: | |
07346f81 | 484 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
485 | break; |
486 | } | |
c3896d2c LCC |
487 | } |
488 | ||
5bb644a0 JB |
489 | #ifdef CONFIG_PM |
490 | void mesh_plink_quiesce(struct sta_info *sta) | |
491 | { | |
492 | if (del_timer_sync(&sta->plink_timer)) | |
493 | sta->plink_timer_was_running = true; | |
494 | } | |
495 | ||
496 | void mesh_plink_restart(struct sta_info *sta) | |
497 | { | |
498 | if (sta->plink_timer_was_running) { | |
499 | add_timer(&sta->plink_timer); | |
500 | sta->plink_timer_was_running = false; | |
501 | } | |
502 | } | |
503 | #endif | |
504 | ||
c3896d2c LCC |
505 | static inline void mesh_plink_timer_set(struct sta_info *sta, int timeout) |
506 | { | |
507 | sta->plink_timer.expires = jiffies + (HZ * timeout / 1000); | |
508 | sta->plink_timer.data = (unsigned long) sta; | |
509 | sta->plink_timer.function = mesh_plink_timer; | |
510 | sta->plink_timeout = timeout; | |
c3896d2c LCC |
511 | add_timer(&sta->plink_timer); |
512 | } | |
513 | ||
514 | int mesh_plink_open(struct sta_info *sta) | |
515 | { | |
516 | __le16 llid; | |
d0709a65 | 517 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
c3896d2c | 518 | |
c2c98fde | 519 | if (!test_sta_flag(sta, WLAN_STA_AUTH)) |
53e80511 JC |
520 | return -EPERM; |
521 | ||
07346f81 | 522 | spin_lock_bh(&sta->lock); |
c3896d2c LCC |
523 | get_random_bytes(&llid, 2); |
524 | sta->llid = llid; | |
57cf8043 | 525 | if (sta->plink_state != NL80211_PLINK_LISTEN) { |
07346f81 | 526 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
527 | return -EBUSY; |
528 | } | |
57cf8043 | 529 | sta->plink_state = NL80211_PLINK_OPN_SNT; |
c3896d2c | 530 | mesh_plink_timer_set(sta, dot11MeshRetryTimeout(sdata)); |
07346f81 | 531 | spin_unlock_bh(&sta->lock); |
bdcbd8e0 JB |
532 | mpl_dbg(sdata, |
533 | "Mesh plink: starting establishment with %pM\n", | |
0c68ae26 | 534 | sta->sta.addr); |
c3896d2c | 535 | |
54ef656b | 536 | return mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_OPEN, |
17741cdc | 537 | sta->sta.addr, llid, 0, 0); |
c3896d2c LCC |
538 | } |
539 | ||
540 | void mesh_plink_block(struct sta_info *sta) | |
541 | { | |
c9370197 JL |
542 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
543 | bool deactivated; | |
544 | ||
07346f81 | 545 | spin_lock_bh(&sta->lock); |
c9370197 | 546 | deactivated = __mesh_plink_deactivate(sta); |
57cf8043 | 547 | sta->plink_state = NL80211_PLINK_BLOCKED; |
07346f81 | 548 | spin_unlock_bh(&sta->lock); |
c9370197 JL |
549 | |
550 | if (deactivated) | |
551 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON); | |
c3896d2c LCC |
552 | } |
553 | ||
c3896d2c | 554 | |
f698d856 | 555 | void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_mgmt *mgmt, |
c3896d2c LCC |
556 | size_t len, struct ieee80211_rx_status *rx_status) |
557 | { | |
c3896d2c LCC |
558 | struct ieee802_11_elems elems; |
559 | struct sta_info *sta; | |
560 | enum plink_event event; | |
54ef656b | 561 | enum ieee80211_self_protected_actioncode ftype; |
c3896d2c | 562 | size_t baselen; |
57aac7c5 | 563 | bool matches_local = true; |
c3896d2c LCC |
564 | u8 ie_len; |
565 | u8 *baseaddr; | |
57aac7c5 | 566 | u32 changed = 0; |
c3896d2c | 567 | __le16 plid, llid, reason; |
1460dd15 | 568 | static const char *mplstates[] = { |
57cf8043 JC |
569 | [NL80211_PLINK_LISTEN] = "LISTEN", |
570 | [NL80211_PLINK_OPN_SNT] = "OPN-SNT", | |
571 | [NL80211_PLINK_OPN_RCVD] = "OPN-RCVD", | |
572 | [NL80211_PLINK_CNF_RCVD] = "CNF_RCVD", | |
573 | [NL80211_PLINK_ESTAB] = "ESTAB", | |
574 | [NL80211_PLINK_HOLDING] = "HOLDING", | |
575 | [NL80211_PLINK_BLOCKED] = "BLOCKED" | |
1460dd15 | 576 | }; |
c3896d2c | 577 | |
9c80d3dc JB |
578 | /* need action_code, aux */ |
579 | if (len < IEEE80211_MIN_ACTION_SIZE + 3) | |
580 | return; | |
581 | ||
c3896d2c | 582 | if (is_multicast_ether_addr(mgmt->da)) { |
bdcbd8e0 JB |
583 | mpl_dbg(sdata, |
584 | "Mesh plink: ignore frame from multicast address\n"); | |
c3896d2c LCC |
585 | return; |
586 | } | |
587 | ||
8db09850 TP |
588 | baseaddr = mgmt->u.action.u.self_prot.variable; |
589 | baselen = (u8 *) mgmt->u.action.u.self_prot.variable - (u8 *) mgmt; | |
590 | if (mgmt->u.action.u.self_prot.action_code == | |
54ef656b | 591 | WLAN_SP_MESH_PEERING_CONFIRM) { |
c3896d2c | 592 | baseaddr += 4; |
70bdb6b2 | 593 | baselen += 4; |
c3896d2c LCC |
594 | } |
595 | ieee802_11_parse_elems(baseaddr, len - baselen, &elems); | |
8db09850 | 596 | if (!elems.peering) { |
bdcbd8e0 JB |
597 | mpl_dbg(sdata, |
598 | "Mesh plink: missing necessary peer link ie\n"); | |
c3896d2c LCC |
599 | return; |
600 | } | |
b130e5ce JC |
601 | if (elems.rsn_len && |
602 | sdata->u.mesh.security == IEEE80211_MESH_SEC_NONE) { | |
bdcbd8e0 JB |
603 | mpl_dbg(sdata, |
604 | "Mesh plink: can't establish link with secure peer\n"); | |
5cff5e01 JC |
605 | return; |
606 | } | |
c3896d2c | 607 | |
8db09850 TP |
608 | ftype = mgmt->u.action.u.self_prot.action_code; |
609 | ie_len = elems.peering_len; | |
610 | if ((ftype == WLAN_SP_MESH_PEERING_OPEN && ie_len != 4) || | |
611 | (ftype == WLAN_SP_MESH_PEERING_CONFIRM && ie_len != 6) || | |
612 | (ftype == WLAN_SP_MESH_PEERING_CLOSE && ie_len != 6 | |
613 | && ie_len != 8)) { | |
bdcbd8e0 JB |
614 | mpl_dbg(sdata, |
615 | "Mesh plink: incorrect plink ie length %d %d\n", | |
616 | ftype, ie_len); | |
c3896d2c LCC |
617 | return; |
618 | } | |
619 | ||
54ef656b TP |
620 | if (ftype != WLAN_SP_MESH_PEERING_CLOSE && |
621 | (!elems.mesh_id || !elems.mesh_config)) { | |
bdcbd8e0 | 622 | mpl_dbg(sdata, "Mesh plink: missing necessary ie\n"); |
c3896d2c LCC |
623 | return; |
624 | } | |
625 | /* Note the lines below are correct, the llid in the frame is the plid | |
626 | * from the point of view of this host. | |
627 | */ | |
8db09850 | 628 | memcpy(&plid, PLINK_GET_LLID(elems.peering), 2); |
54ef656b | 629 | if (ftype == WLAN_SP_MESH_PEERING_CONFIRM || |
8db09850 TP |
630 | (ftype == WLAN_SP_MESH_PEERING_CLOSE && ie_len == 8)) |
631 | memcpy(&llid, PLINK_GET_PLID(elems.peering), 2); | |
c3896d2c | 632 | |
d0709a65 JB |
633 | rcu_read_lock(); |
634 | ||
abe60632 | 635 | sta = sta_info_get(sdata, mgmt->sa); |
54ef656b | 636 | if (!sta && ftype != WLAN_SP_MESH_PEERING_OPEN) { |
bdcbd8e0 | 637 | mpl_dbg(sdata, "Mesh plink: cls or cnf from unknown peer\n"); |
d0709a65 | 638 | rcu_read_unlock(); |
c3896d2c LCC |
639 | return; |
640 | } | |
641 | ||
55335137 | 642 | if (ftype == WLAN_SP_MESH_PEERING_OPEN && |
3d4f9699 | 643 | !rssi_threshold_check(sta, sdata)) { |
bdcbd8e0 | 644 | mpl_dbg(sdata, "Mesh plink: %pM does not meet rssi threshold\n", |
3d4f9699 | 645 | mgmt->sa); |
55335137 AN |
646 | rcu_read_unlock(); |
647 | return; | |
648 | } | |
649 | ||
c2c98fde | 650 | if (sta && !test_sta_flag(sta, WLAN_STA_AUTH)) { |
bdcbd8e0 | 651 | mpl_dbg(sdata, "Mesh plink: Action frame from non-authed peer\n"); |
53e80511 JC |
652 | rcu_read_unlock(); |
653 | return; | |
654 | } | |
655 | ||
57cf8043 | 656 | if (sta && sta->plink_state == NL80211_PLINK_BLOCKED) { |
d0709a65 | 657 | rcu_read_unlock(); |
c3896d2c LCC |
658 | return; |
659 | } | |
660 | ||
661 | /* Now we will figure out the appropriate event... */ | |
662 | event = PLINK_UNDEFINED; | |
54ef656b | 663 | if (ftype != WLAN_SP_MESH_PEERING_CLOSE && |
f743ff49 | 664 | !mesh_matches_local(sdata, &elems)) { |
d12c7452 | 665 | matches_local = false; |
c3896d2c | 666 | switch (ftype) { |
54ef656b | 667 | case WLAN_SP_MESH_PEERING_OPEN: |
c3896d2c LCC |
668 | event = OPN_RJCT; |
669 | break; | |
54ef656b | 670 | case WLAN_SP_MESH_PEERING_CONFIRM: |
c3896d2c LCC |
671 | event = CNF_RJCT; |
672 | break; | |
54ef656b | 673 | default: |
c3896d2c LCC |
674 | break; |
675 | } | |
d12c7452 CL |
676 | } |
677 | ||
678 | if (!sta && !matches_local) { | |
679 | rcu_read_unlock(); | |
54ef656b | 680 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
d12c7452 | 681 | llid = 0; |
54ef656b TP |
682 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
683 | mgmt->sa, llid, plid, reason); | |
d12c7452 | 684 | return; |
c3896d2c | 685 | } else if (!sta) { |
54ef656b | 686 | /* ftype == WLAN_SP_MESH_PEERING_OPEN */ |
c3896d2c | 687 | if (!mesh_plink_free_count(sdata)) { |
bdcbd8e0 | 688 | mpl_dbg(sdata, "Mesh plink error: no more free plinks\n"); |
73651ee6 JB |
689 | rcu_read_unlock(); |
690 | return; | |
691 | } | |
c3896d2c | 692 | event = OPN_ACPT; |
d12c7452 | 693 | } else if (matches_local) { |
c3896d2c | 694 | switch (ftype) { |
54ef656b | 695 | case WLAN_SP_MESH_PEERING_OPEN: |
c3896d2c | 696 | if (!mesh_plink_free_count(sdata) || |
d0709a65 | 697 | (sta->plid && sta->plid != plid)) |
c3896d2c LCC |
698 | event = OPN_IGNR; |
699 | else | |
700 | event = OPN_ACPT; | |
701 | break; | |
54ef656b | 702 | case WLAN_SP_MESH_PEERING_CONFIRM: |
c3896d2c | 703 | if (!mesh_plink_free_count(sdata) || |
d0709a65 | 704 | (sta->llid != llid || sta->plid != plid)) |
c3896d2c LCC |
705 | event = CNF_IGNR; |
706 | else | |
707 | event = CNF_ACPT; | |
708 | break; | |
54ef656b | 709 | case WLAN_SP_MESH_PEERING_CLOSE: |
57cf8043 | 710 | if (sta->plink_state == NL80211_PLINK_ESTAB) |
c3896d2c LCC |
711 | /* Do not check for llid or plid. This does not |
712 | * follow the standard but since multiple plinks | |
713 | * per sta are not supported, it is necessary in | |
714 | * order to avoid a livelock when MP A sees an | |
715 | * establish peer link to MP B but MP B does not | |
716 | * see it. This can be caused by a timeout in | |
717 | * B's peer link establishment or B beign | |
718 | * restarted. | |
719 | */ | |
720 | event = CLS_ACPT; | |
721 | else if (sta->plid != plid) | |
722 | event = CLS_IGNR; | |
723 | else if (ie_len == 7 && sta->llid != llid) | |
724 | event = CLS_IGNR; | |
725 | else | |
726 | event = CLS_ACPT; | |
727 | break; | |
728 | default: | |
bdcbd8e0 | 729 | mpl_dbg(sdata, "Mesh plink: unknown frame subtype\n"); |
d0709a65 | 730 | rcu_read_unlock(); |
c3896d2c LCC |
731 | return; |
732 | } | |
54ab1ffb TP |
733 | } |
734 | ||
735 | if (event == OPN_ACPT) { | |
736 | /* allocate sta entry if necessary and update info */ | |
f743ff49 | 737 | sta = mesh_peer_init(sdata, mgmt->sa, &elems); |
54ab1ffb | 738 | if (!sta) { |
bdcbd8e0 | 739 | mpl_dbg(sdata, "Mesh plink: failed to init peer!\n"); |
54ab1ffb TP |
740 | rcu_read_unlock(); |
741 | return; | |
742 | } | |
c3896d2c LCC |
743 | } |
744 | ||
bdcbd8e0 JB |
745 | mpl_dbg(sdata, |
746 | "Mesh plink (peer, state, llid, plid, event): %pM %s %d %d %d\n", | |
1460dd15 | 747 | mgmt->sa, mplstates[sta->plink_state], |
0c68ae26 JB |
748 | le16_to_cpu(sta->llid), le16_to_cpu(sta->plid), |
749 | event); | |
c3896d2c | 750 | reason = 0; |
54ab1ffb | 751 | spin_lock_bh(&sta->lock); |
c3896d2c LCC |
752 | switch (sta->plink_state) { |
753 | /* spin_unlock as soon as state is updated at each case */ | |
57cf8043 | 754 | case NL80211_PLINK_LISTEN: |
c3896d2c LCC |
755 | switch (event) { |
756 | case CLS_ACPT: | |
757 | mesh_plink_fsm_restart(sta); | |
07346f81 | 758 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
759 | break; |
760 | case OPN_ACPT: | |
57cf8043 | 761 | sta->plink_state = NL80211_PLINK_OPN_RCVD; |
c3896d2c LCC |
762 | sta->plid = plid; |
763 | get_random_bytes(&llid, 2); | |
764 | sta->llid = llid; | |
765 | mesh_plink_timer_set(sta, dot11MeshRetryTimeout(sdata)); | |
07346f81 | 766 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
767 | mesh_plink_frame_tx(sdata, |
768 | WLAN_SP_MESH_PEERING_OPEN, | |
769 | sta->sta.addr, llid, 0, 0); | |
770 | mesh_plink_frame_tx(sdata, | |
771 | WLAN_SP_MESH_PEERING_CONFIRM, | |
772 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
773 | break; |
774 | default: | |
07346f81 | 775 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
776 | break; |
777 | } | |
778 | break; | |
779 | ||
57cf8043 | 780 | case NL80211_PLINK_OPN_SNT: |
c3896d2c LCC |
781 | switch (event) { |
782 | case OPN_RJCT: | |
783 | case CNF_RJCT: | |
54ef656b | 784 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
c3896d2c LCC |
785 | case CLS_ACPT: |
786 | if (!reason) | |
54ef656b | 787 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
c3896d2c | 788 | sta->reason = reason; |
57cf8043 | 789 | sta->plink_state = NL80211_PLINK_HOLDING; |
c3896d2c LCC |
790 | if (!mod_plink_timer(sta, |
791 | dot11MeshHoldingTimeout(sdata))) | |
792 | sta->ignore_plink_timer = true; | |
793 | ||
794 | llid = sta->llid; | |
07346f81 | 795 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
796 | mesh_plink_frame_tx(sdata, |
797 | WLAN_SP_MESH_PEERING_CLOSE, | |
798 | sta->sta.addr, llid, plid, reason); | |
c3896d2c LCC |
799 | break; |
800 | case OPN_ACPT: | |
801 | /* retry timer is left untouched */ | |
57cf8043 | 802 | sta->plink_state = NL80211_PLINK_OPN_RCVD; |
c3896d2c LCC |
803 | sta->plid = plid; |
804 | llid = sta->llid; | |
07346f81 | 805 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
806 | mesh_plink_frame_tx(sdata, |
807 | WLAN_SP_MESH_PEERING_CONFIRM, | |
808 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
809 | break; |
810 | case CNF_ACPT: | |
57cf8043 | 811 | sta->plink_state = NL80211_PLINK_CNF_RCVD; |
c3896d2c LCC |
812 | if (!mod_plink_timer(sta, |
813 | dot11MeshConfirmTimeout(sdata))) | |
814 | sta->ignore_plink_timer = true; | |
815 | ||
07346f81 | 816 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
817 | break; |
818 | default: | |
07346f81 | 819 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
820 | break; |
821 | } | |
822 | break; | |
823 | ||
57cf8043 | 824 | case NL80211_PLINK_OPN_RCVD: |
c3896d2c LCC |
825 | switch (event) { |
826 | case OPN_RJCT: | |
827 | case CNF_RJCT: | |
54ef656b | 828 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
c3896d2c LCC |
829 | case CLS_ACPT: |
830 | if (!reason) | |
54ef656b | 831 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
c3896d2c | 832 | sta->reason = reason; |
57cf8043 | 833 | sta->plink_state = NL80211_PLINK_HOLDING; |
c3896d2c LCC |
834 | if (!mod_plink_timer(sta, |
835 | dot11MeshHoldingTimeout(sdata))) | |
836 | sta->ignore_plink_timer = true; | |
837 | ||
838 | llid = sta->llid; | |
07346f81 | 839 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
840 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
841 | sta->sta.addr, llid, plid, reason); | |
c3896d2c LCC |
842 | break; |
843 | case OPN_ACPT: | |
844 | llid = sta->llid; | |
07346f81 | 845 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
846 | mesh_plink_frame_tx(sdata, |
847 | WLAN_SP_MESH_PEERING_CONFIRM, | |
848 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
849 | break; |
850 | case CNF_ACPT: | |
d0709a65 | 851 | del_timer(&sta->plink_timer); |
57cf8043 | 852 | sta->plink_state = NL80211_PLINK_ESTAB; |
07346f81 | 853 | spin_unlock_bh(&sta->lock); |
c9370197 | 854 | mesh_plink_inc_estab_count(sdata); |
57aac7c5 AN |
855 | changed |= mesh_set_ht_prot_mode(sdata); |
856 | changed |= BSS_CHANGED_BEACON; | |
bdcbd8e0 | 857 | mpl_dbg(sdata, "Mesh plink with %pM ESTABLISHED\n", |
0c68ae26 | 858 | sta->sta.addr); |
c3896d2c LCC |
859 | break; |
860 | default: | |
07346f81 | 861 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
862 | break; |
863 | } | |
864 | break; | |
865 | ||
57cf8043 | 866 | case NL80211_PLINK_CNF_RCVD: |
c3896d2c LCC |
867 | switch (event) { |
868 | case OPN_RJCT: | |
869 | case CNF_RJCT: | |
54ef656b | 870 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
c3896d2c LCC |
871 | case CLS_ACPT: |
872 | if (!reason) | |
54ef656b | 873 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
c3896d2c | 874 | sta->reason = reason; |
57cf8043 | 875 | sta->plink_state = NL80211_PLINK_HOLDING; |
c3896d2c LCC |
876 | if (!mod_plink_timer(sta, |
877 | dot11MeshHoldingTimeout(sdata))) | |
878 | sta->ignore_plink_timer = true; | |
879 | ||
880 | llid = sta->llid; | |
07346f81 | 881 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
882 | mesh_plink_frame_tx(sdata, |
883 | WLAN_SP_MESH_PEERING_CLOSE, | |
884 | sta->sta.addr, llid, plid, reason); | |
ff59dc76 | 885 | break; |
c3896d2c | 886 | case OPN_ACPT: |
d0709a65 | 887 | del_timer(&sta->plink_timer); |
57cf8043 | 888 | sta->plink_state = NL80211_PLINK_ESTAB; |
07346f81 | 889 | spin_unlock_bh(&sta->lock); |
c9370197 | 890 | mesh_plink_inc_estab_count(sdata); |
57aac7c5 AN |
891 | changed |= mesh_set_ht_prot_mode(sdata); |
892 | changed |= BSS_CHANGED_BEACON; | |
bdcbd8e0 | 893 | mpl_dbg(sdata, "Mesh plink with %pM ESTABLISHED\n", |
0c68ae26 | 894 | sta->sta.addr); |
54ef656b TP |
895 | mesh_plink_frame_tx(sdata, |
896 | WLAN_SP_MESH_PEERING_CONFIRM, | |
897 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
898 | break; |
899 | default: | |
07346f81 | 900 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
901 | break; |
902 | } | |
903 | break; | |
904 | ||
57cf8043 | 905 | case NL80211_PLINK_ESTAB: |
c3896d2c LCC |
906 | switch (event) { |
907 | case CLS_ACPT: | |
54ef656b | 908 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
c3896d2c | 909 | sta->reason = reason; |
57aac7c5 | 910 | __mesh_plink_deactivate(sta); |
57cf8043 | 911 | sta->plink_state = NL80211_PLINK_HOLDING; |
c3896d2c | 912 | llid = sta->llid; |
d0709a65 | 913 | mod_plink_timer(sta, dot11MeshHoldingTimeout(sdata)); |
07346f81 | 914 | spin_unlock_bh(&sta->lock); |
57aac7c5 AN |
915 | changed |= mesh_set_ht_prot_mode(sdata); |
916 | changed |= BSS_CHANGED_BEACON; | |
54ef656b TP |
917 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
918 | sta->sta.addr, llid, plid, reason); | |
c3896d2c LCC |
919 | break; |
920 | case OPN_ACPT: | |
921 | llid = sta->llid; | |
07346f81 | 922 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
923 | mesh_plink_frame_tx(sdata, |
924 | WLAN_SP_MESH_PEERING_CONFIRM, | |
925 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
926 | break; |
927 | default: | |
07346f81 | 928 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
929 | break; |
930 | } | |
931 | break; | |
57cf8043 | 932 | case NL80211_PLINK_HOLDING: |
c3896d2c LCC |
933 | switch (event) { |
934 | case CLS_ACPT: | |
d0709a65 | 935 | if (del_timer(&sta->plink_timer)) |
c3896d2c | 936 | sta->ignore_plink_timer = 1; |
c3896d2c | 937 | mesh_plink_fsm_restart(sta); |
07346f81 | 938 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
939 | break; |
940 | case OPN_ACPT: | |
941 | case CNF_ACPT: | |
942 | case OPN_RJCT: | |
943 | case CNF_RJCT: | |
944 | llid = sta->llid; | |
945 | reason = sta->reason; | |
07346f81 | 946 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
947 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
948 | sta->sta.addr, llid, plid, reason); | |
c3896d2c LCC |
949 | break; |
950 | default: | |
07346f81 | 951 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
952 | } |
953 | break; | |
954 | default: | |
b4e08ea1 | 955 | /* should not get here, PLINK_BLOCKED is dealt with at the |
3ad2f3fb | 956 | * beginning of the function |
c3896d2c | 957 | */ |
07346f81 | 958 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
959 | break; |
960 | } | |
d0709a65 JB |
961 | |
962 | rcu_read_unlock(); | |
57aac7c5 AN |
963 | |
964 | if (changed) | |
965 | ieee80211_bss_info_change_notify(sdata, changed); | |
c3896d2c | 966 | } |