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; |
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); | |
f609a43d | 227 | int err = -ENOMEM; |
3b69a9c5 | 228 | |
65e8b0cc | 229 | skb = dev_alloc_skb(local->tx_headroom + |
3b69a9c5 TP |
230 | hdr_len + |
231 | 2 + /* capability info */ | |
232 | 2 + /* AID */ | |
233 | 2 + 8 + /* supported rates */ | |
234 | 2 + (IEEE80211_MAX_SUPP_RATES - 8) + | |
235 | 2 + sdata->u.mesh.mesh_id_len + | |
236 | 2 + sizeof(struct ieee80211_meshconf_ie) + | |
176f3608 | 237 | 2 + sizeof(struct ieee80211_ht_cap) + |
074d46d1 | 238 | 2 + sizeof(struct ieee80211_ht_operation) + |
3b69a9c5 TP |
239 | 2 + 8 + /* peering IE */ |
240 | sdata->u.mesh.ie_len); | |
c3896d2c LCC |
241 | if (!skb) |
242 | return -1; | |
e7570dfb | 243 | info = IEEE80211_SKB_CB(skb); |
65e8b0cc | 244 | skb_reserve(skb, local->tx_headroom); |
3b69a9c5 TP |
245 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, hdr_len); |
246 | memset(mgmt, 0, hdr_len); | |
e7827a70 HH |
247 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
248 | IEEE80211_STYPE_ACTION); | |
c3896d2c | 249 | memcpy(mgmt->da, da, ETH_ALEN); |
47846c9b | 250 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); |
915b5c50 | 251 | memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN); |
8db09850 TP |
252 | mgmt->u.action.category = WLAN_CATEGORY_SELF_PROTECTED; |
253 | mgmt->u.action.u.self_prot.action_code = action; | |
c3896d2c | 254 | |
8db09850 TP |
255 | if (action != WLAN_SP_MESH_PEERING_CLOSE) { |
256 | /* capability info */ | |
257 | pos = skb_put(skb, 2); | |
258 | memset(pos, 0, 2); | |
54ef656b | 259 | if (action == WLAN_SP_MESH_PEERING_CONFIRM) { |
8db09850 TP |
260 | /* AID */ |
261 | pos = skb_put(skb, 2); | |
77fa76bb | 262 | memcpy(pos + 2, &plid, 2); |
c3896d2c | 263 | } |
6b77863b JB |
264 | if (ieee80211_add_srates_ie(sdata, skb, true, |
265 | local->oper_channel->band) || | |
266 | ieee80211_add_ext_srates_ie(sdata, skb, true, | |
267 | local->oper_channel->band) || | |
082ebb0c TP |
268 | mesh_add_rsn_ie(skb, sdata) || |
269 | mesh_add_meshid_ie(skb, sdata) || | |
270 | mesh_add_meshconf_ie(skb, sdata)) | |
f609a43d | 271 | goto free; |
8db09850 | 272 | } else { /* WLAN_SP_MESH_PEERING_CLOSE */ |
e7570dfb | 273 | info->flags |= IEEE80211_TX_CTL_NO_ACK; |
8db09850 | 274 | if (mesh_add_meshid_ie(skb, sdata)) |
f609a43d | 275 | goto free; |
c3896d2c LCC |
276 | } |
277 | ||
8db09850 | 278 | /* Add Mesh Peering Management element */ |
c3896d2c | 279 | switch (action) { |
54ef656b | 280 | case WLAN_SP_MESH_PEERING_OPEN: |
c3896d2c | 281 | break; |
54ef656b | 282 | case WLAN_SP_MESH_PEERING_CONFIRM: |
8db09850 | 283 | ie_len += 2; |
c3896d2c LCC |
284 | include_plid = true; |
285 | break; | |
54ef656b | 286 | case WLAN_SP_MESH_PEERING_CLOSE: |
8db09850 TP |
287 | if (plid) { |
288 | ie_len += 2; | |
c3896d2c LCC |
289 | include_plid = true; |
290 | } | |
8db09850 | 291 | ie_len += 2; /* reason code */ |
c3896d2c | 292 | break; |
8db09850 | 293 | default: |
f609a43d TP |
294 | err = -EINVAL; |
295 | goto free; | |
c3896d2c LCC |
296 | } |
297 | ||
8db09850 | 298 | if (WARN_ON(skb_tailroom(skb) < 2 + ie_len)) |
f609a43d | 299 | goto free; |
8db09850 | 300 | |
c3896d2c | 301 | pos = skb_put(skb, 2 + ie_len); |
8db09850 | 302 | *pos++ = WLAN_EID_PEER_MGMT; |
c3896d2c | 303 | *pos++ = ie_len; |
8db09850 TP |
304 | memcpy(pos, &peering_proto, 2); |
305 | pos += 2; | |
c3896d2c | 306 | memcpy(pos, &llid, 2); |
8db09850 | 307 | pos += 2; |
c3896d2c | 308 | if (include_plid) { |
c3896d2c | 309 | memcpy(pos, &plid, 2); |
8db09850 | 310 | pos += 2; |
c3896d2c | 311 | } |
54ef656b | 312 | if (action == WLAN_SP_MESH_PEERING_CLOSE) { |
c3896d2c | 313 | memcpy(pos, &reason, 2); |
8db09850 | 314 | pos += 2; |
c3896d2c | 315 | } |
176f3608 TP |
316 | |
317 | if (action != WLAN_SP_MESH_PEERING_CLOSE) { | |
318 | if (mesh_add_ht_cap_ie(skb, sdata) || | |
074d46d1 | 319 | mesh_add_ht_oper_ie(skb, sdata)) |
f609a43d | 320 | goto free; |
176f3608 TP |
321 | } |
322 | ||
8db09850 | 323 | if (mesh_add_vendor_ies(skb, sdata)) |
f609a43d | 324 | goto free; |
c3896d2c | 325 | |
62ae67be | 326 | ieee80211_tx_skb(sdata, skb); |
c3896d2c | 327 | return 0; |
f609a43d TP |
328 | free: |
329 | kfree_skb(skb); | |
330 | return err; | |
c3896d2c LCC |
331 | } |
332 | ||
2c53040f BH |
333 | /** |
334 | * mesh_peer_init - initialize new mesh peer and return resulting sta_info | |
54ab1ffb TP |
335 | * |
336 | * @sdata: local meshif | |
337 | * @addr: peer's address | |
54ab1ffb TP |
338 | * @elems: IEs from beacon or mesh peering frame |
339 | * | |
340 | * call under RCU | |
341 | */ | |
342 | static struct sta_info *mesh_peer_init(struct ieee80211_sub_if_data *sdata, | |
f743ff49 | 343 | u8 *addr, |
54ab1ffb | 344 | struct ieee802_11_elems *elems) |
c3896d2c | 345 | { |
f698d856 | 346 | struct ieee80211_local *local = sdata->local; |
f743ff49 | 347 | enum ieee80211_band band = local->oper_channel->band; |
54ab1ffb | 348 | struct ieee80211_supported_band *sband; |
f743ff49 | 349 | u32 rates, basic_rates = 0; |
c3896d2c | 350 | struct sta_info *sta; |
e87278e7 | 351 | bool insert = false; |
c3896d2c | 352 | |
f743ff49 TP |
353 | sband = local->hw.wiphy->bands[band]; |
354 | rates = ieee80211_sta_get_rates(local, elems, band, &basic_rates); | |
d0709a65 | 355 | |
54ab1ffb | 356 | sta = sta_info_get(sdata, addr); |
c3896d2c | 357 | if (!sta) { |
f5c56814 TP |
358 | /* Userspace handles peer allocation when security is enabled */ |
359 | if (sdata->u.mesh.security & IEEE80211_MESH_SEC_AUTHED) { | |
360 | cfg80211_notify_new_peer_candidate(sdata->dev, addr, | |
361 | elems->ie_start, | |
362 | elems->total_len, | |
363 | GFP_ATOMIC); | |
364 | return NULL; | |
365 | } | |
366 | ||
54ab1ffb | 367 | sta = mesh_plink_alloc(sdata, addr); |
34e89507 | 368 | if (!sta) |
54ab1ffb | 369 | return NULL; |
e87278e7 | 370 | insert = true; |
c3896d2c LCC |
371 | } |
372 | ||
54ab1ffb | 373 | spin_lock_bh(&sta->lock); |
c3896d2c | 374 | sta->last_rx = jiffies; |
bae35d92 CYY |
375 | if (sta->plink_state == NL80211_PLINK_ESTAB) { |
376 | spin_unlock_bh(&sta->lock); | |
377 | return sta; | |
378 | } | |
379 | ||
f743ff49 | 380 | sta->sta.supp_rates[band] = rates; |
e76781e4 TP |
381 | if (elems->ht_cap_elem && |
382 | sdata->local->_oper_channel_type != NL80211_CHAN_NO_HT) | |
54ab1ffb TP |
383 | ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, |
384 | elems->ht_cap_elem, | |
385 | &sta->sta.ht_cap); | |
386 | else | |
387 | memset(&sta->sta.ht_cap, 0, sizeof(sta->sta.ht_cap)); | |
388 | ||
57aac7c5 | 389 | if (elems->ht_operation) { |
c7d25828 TP |
390 | if (!(elems->ht_operation->ht_param & |
391 | IEEE80211_HT_PARAM_CHAN_WIDTH_ANY)) | |
392 | sta->sta.ht_cap.cap &= | |
393 | ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
57aac7c5 AN |
394 | sta->ch_type = |
395 | ieee80211_ht_oper_to_channel_type(elems->ht_operation); | |
396 | } | |
c7d25828 | 397 | |
54ab1ffb TP |
398 | rate_control_rate_init(sta); |
399 | spin_unlock_bh(&sta->lock); | |
400 | ||
e87278e7 TP |
401 | if (insert && sta_info_insert(sta)) |
402 | return NULL; | |
403 | ||
54ab1ffb TP |
404 | return sta; |
405 | } | |
406 | ||
f743ff49 TP |
407 | void mesh_neighbour_update(struct ieee80211_sub_if_data *sdata, |
408 | u8 *hw_addr, | |
54ab1ffb TP |
409 | struct ieee802_11_elems *elems) |
410 | { | |
411 | struct sta_info *sta; | |
412 | ||
54ab1ffb | 413 | rcu_read_lock(); |
f743ff49 | 414 | sta = mesh_peer_init(sdata, hw_addr, elems); |
54ab1ffb TP |
415 | if (!sta) |
416 | goto out; | |
417 | ||
1570ca59 | 418 | if (mesh_peer_accepts_plinks(elems) && |
54ab1ffb TP |
419 | sta->plink_state == NL80211_PLINK_LISTEN && |
420 | sdata->u.mesh.accepting_plinks && | |
421 | sdata->u.mesh.mshcfg.auto_open_plinks && | |
422 | rssi_threshold_check(sta, sdata)) | |
c3896d2c LCC |
423 | mesh_plink_open(sta); |
424 | ||
54ab1ffb | 425 | out: |
d0709a65 | 426 | rcu_read_unlock(); |
c3896d2c LCC |
427 | } |
428 | ||
429 | static void mesh_plink_timer(unsigned long data) | |
430 | { | |
431 | struct sta_info *sta; | |
432 | __le16 llid, plid, reason; | |
c3896d2c | 433 | struct ieee80211_sub_if_data *sdata; |
c3896d2c | 434 | |
d0709a65 JB |
435 | /* |
436 | * This STA is valid because sta_info_destroy() will | |
437 | * del_timer_sync() this timer after having made sure | |
438 | * it cannot be readded (by deleting the plink.) | |
439 | */ | |
c3896d2c LCC |
440 | sta = (struct sta_info *) data; |
441 | ||
5bb644a0 JB |
442 | if (sta->sdata->local->quiescing) { |
443 | sta->plink_timer_was_running = true; | |
444 | return; | |
445 | } | |
446 | ||
07346f81 | 447 | spin_lock_bh(&sta->lock); |
c3896d2c LCC |
448 | if (sta->ignore_plink_timer) { |
449 | sta->ignore_plink_timer = false; | |
07346f81 | 450 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
451 | return; |
452 | } | |
bdcbd8e0 JB |
453 | mpl_dbg(sta->sdata, |
454 | "Mesh plink timer for %pM fired on state %d\n", | |
0c68ae26 | 455 | sta->sta.addr, sta->plink_state); |
c3896d2c LCC |
456 | reason = 0; |
457 | llid = sta->llid; | |
458 | plid = sta->plid; | |
d0709a65 | 459 | sdata = sta->sdata; |
c3896d2c LCC |
460 | |
461 | switch (sta->plink_state) { | |
57cf8043 JC |
462 | case NL80211_PLINK_OPN_RCVD: |
463 | case NL80211_PLINK_OPN_SNT: | |
c3896d2c LCC |
464 | /* retry timer */ |
465 | if (sta->plink_retries < dot11MeshMaxRetries(sdata)) { | |
466 | u32 rand; | |
bdcbd8e0 JB |
467 | mpl_dbg(sta->sdata, |
468 | "Mesh plink for %pM (retry, timeout): %d %d\n", | |
0c68ae26 JB |
469 | sta->sta.addr, sta->plink_retries, |
470 | sta->plink_timeout); | |
c3896d2c LCC |
471 | get_random_bytes(&rand, sizeof(u32)); |
472 | sta->plink_timeout = sta->plink_timeout + | |
473 | rand % sta->plink_timeout; | |
474 | ++sta->plink_retries; | |
d0709a65 | 475 | mod_plink_timer(sta, sta->plink_timeout); |
07346f81 | 476 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
477 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_OPEN, |
478 | sta->sta.addr, llid, 0, 0); | |
c3896d2c LCC |
479 | break; |
480 | } | |
54ef656b | 481 | reason = cpu_to_le16(WLAN_REASON_MESH_MAX_RETRIES); |
c3896d2c | 482 | /* fall through on else */ |
57cf8043 | 483 | case NL80211_PLINK_CNF_RCVD: |
c3896d2c LCC |
484 | /* confirm timer */ |
485 | if (!reason) | |
54ef656b | 486 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIRM_TIMEOUT); |
57cf8043 | 487 | sta->plink_state = NL80211_PLINK_HOLDING; |
d0709a65 | 488 | mod_plink_timer(sta, dot11MeshHoldingTimeout(sdata)); |
07346f81 | 489 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
490 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
491 | sta->sta.addr, llid, plid, reason); | |
c3896d2c | 492 | break; |
57cf8043 | 493 | case NL80211_PLINK_HOLDING: |
c3896d2c | 494 | /* holding timer */ |
d0709a65 | 495 | del_timer(&sta->plink_timer); |
c3896d2c | 496 | mesh_plink_fsm_restart(sta); |
07346f81 | 497 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
498 | break; |
499 | default: | |
07346f81 | 500 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
501 | break; |
502 | } | |
c3896d2c LCC |
503 | } |
504 | ||
5bb644a0 JB |
505 | #ifdef CONFIG_PM |
506 | void mesh_plink_quiesce(struct sta_info *sta) | |
507 | { | |
508 | if (del_timer_sync(&sta->plink_timer)) | |
509 | sta->plink_timer_was_running = true; | |
510 | } | |
511 | ||
512 | void mesh_plink_restart(struct sta_info *sta) | |
513 | { | |
514 | if (sta->plink_timer_was_running) { | |
515 | add_timer(&sta->plink_timer); | |
516 | sta->plink_timer_was_running = false; | |
517 | } | |
518 | } | |
519 | #endif | |
520 | ||
c3896d2c LCC |
521 | static inline void mesh_plink_timer_set(struct sta_info *sta, int timeout) |
522 | { | |
523 | sta->plink_timer.expires = jiffies + (HZ * timeout / 1000); | |
524 | sta->plink_timer.data = (unsigned long) sta; | |
525 | sta->plink_timer.function = mesh_plink_timer; | |
526 | sta->plink_timeout = timeout; | |
c3896d2c LCC |
527 | add_timer(&sta->plink_timer); |
528 | } | |
529 | ||
530 | int mesh_plink_open(struct sta_info *sta) | |
531 | { | |
532 | __le16 llid; | |
d0709a65 | 533 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
c3896d2c | 534 | |
c2c98fde | 535 | if (!test_sta_flag(sta, WLAN_STA_AUTH)) |
53e80511 JC |
536 | return -EPERM; |
537 | ||
07346f81 | 538 | spin_lock_bh(&sta->lock); |
c3896d2c LCC |
539 | get_random_bytes(&llid, 2); |
540 | sta->llid = llid; | |
57cf8043 | 541 | if (sta->plink_state != NL80211_PLINK_LISTEN) { |
07346f81 | 542 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
543 | return -EBUSY; |
544 | } | |
57cf8043 | 545 | sta->plink_state = NL80211_PLINK_OPN_SNT; |
c3896d2c | 546 | mesh_plink_timer_set(sta, dot11MeshRetryTimeout(sdata)); |
07346f81 | 547 | spin_unlock_bh(&sta->lock); |
bdcbd8e0 JB |
548 | mpl_dbg(sdata, |
549 | "Mesh plink: starting establishment with %pM\n", | |
0c68ae26 | 550 | sta->sta.addr); |
c3896d2c | 551 | |
54ef656b | 552 | return mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_OPEN, |
17741cdc | 553 | sta->sta.addr, llid, 0, 0); |
c3896d2c LCC |
554 | } |
555 | ||
556 | void mesh_plink_block(struct sta_info *sta) | |
557 | { | |
c9370197 JL |
558 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
559 | bool deactivated; | |
560 | ||
07346f81 | 561 | spin_lock_bh(&sta->lock); |
c9370197 | 562 | deactivated = __mesh_plink_deactivate(sta); |
57cf8043 | 563 | sta->plink_state = NL80211_PLINK_BLOCKED; |
07346f81 | 564 | spin_unlock_bh(&sta->lock); |
c9370197 JL |
565 | |
566 | if (deactivated) | |
567 | ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON); | |
c3896d2c LCC |
568 | } |
569 | ||
c3896d2c | 570 | |
f698d856 | 571 | void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_mgmt *mgmt, |
c3896d2c LCC |
572 | size_t len, struct ieee80211_rx_status *rx_status) |
573 | { | |
c3896d2c LCC |
574 | struct ieee802_11_elems elems; |
575 | struct sta_info *sta; | |
576 | enum plink_event event; | |
54ef656b | 577 | enum ieee80211_self_protected_actioncode ftype; |
c3896d2c | 578 | size_t baselen; |
57aac7c5 | 579 | bool matches_local = true; |
c3896d2c LCC |
580 | u8 ie_len; |
581 | u8 *baseaddr; | |
57aac7c5 | 582 | u32 changed = 0; |
c3896d2c | 583 | __le16 plid, llid, reason; |
1460dd15 | 584 | static const char *mplstates[] = { |
57cf8043 JC |
585 | [NL80211_PLINK_LISTEN] = "LISTEN", |
586 | [NL80211_PLINK_OPN_SNT] = "OPN-SNT", | |
587 | [NL80211_PLINK_OPN_RCVD] = "OPN-RCVD", | |
588 | [NL80211_PLINK_CNF_RCVD] = "CNF_RCVD", | |
589 | [NL80211_PLINK_ESTAB] = "ESTAB", | |
590 | [NL80211_PLINK_HOLDING] = "HOLDING", | |
591 | [NL80211_PLINK_BLOCKED] = "BLOCKED" | |
1460dd15 | 592 | }; |
c3896d2c | 593 | |
9c80d3dc JB |
594 | /* need action_code, aux */ |
595 | if (len < IEEE80211_MIN_ACTION_SIZE + 3) | |
596 | return; | |
597 | ||
c3896d2c | 598 | if (is_multicast_ether_addr(mgmt->da)) { |
bdcbd8e0 JB |
599 | mpl_dbg(sdata, |
600 | "Mesh plink: ignore frame from multicast address\n"); | |
c3896d2c LCC |
601 | return; |
602 | } | |
603 | ||
8db09850 TP |
604 | baseaddr = mgmt->u.action.u.self_prot.variable; |
605 | baselen = (u8 *) mgmt->u.action.u.self_prot.variable - (u8 *) mgmt; | |
606 | if (mgmt->u.action.u.self_prot.action_code == | |
54ef656b | 607 | WLAN_SP_MESH_PEERING_CONFIRM) { |
c3896d2c | 608 | baseaddr += 4; |
70bdb6b2 | 609 | baselen += 4; |
c3896d2c LCC |
610 | } |
611 | ieee802_11_parse_elems(baseaddr, len - baselen, &elems); | |
8db09850 | 612 | if (!elems.peering) { |
bdcbd8e0 JB |
613 | mpl_dbg(sdata, |
614 | "Mesh plink: missing necessary peer link ie\n"); | |
c3896d2c LCC |
615 | return; |
616 | } | |
b130e5ce JC |
617 | if (elems.rsn_len && |
618 | sdata->u.mesh.security == IEEE80211_MESH_SEC_NONE) { | |
bdcbd8e0 JB |
619 | mpl_dbg(sdata, |
620 | "Mesh plink: can't establish link with secure peer\n"); | |
5cff5e01 JC |
621 | return; |
622 | } | |
c3896d2c | 623 | |
8db09850 TP |
624 | ftype = mgmt->u.action.u.self_prot.action_code; |
625 | ie_len = elems.peering_len; | |
626 | if ((ftype == WLAN_SP_MESH_PEERING_OPEN && ie_len != 4) || | |
627 | (ftype == WLAN_SP_MESH_PEERING_CONFIRM && ie_len != 6) || | |
628 | (ftype == WLAN_SP_MESH_PEERING_CLOSE && ie_len != 6 | |
629 | && ie_len != 8)) { | |
bdcbd8e0 JB |
630 | mpl_dbg(sdata, |
631 | "Mesh plink: incorrect plink ie length %d %d\n", | |
632 | ftype, ie_len); | |
c3896d2c LCC |
633 | return; |
634 | } | |
635 | ||
54ef656b TP |
636 | if (ftype != WLAN_SP_MESH_PEERING_CLOSE && |
637 | (!elems.mesh_id || !elems.mesh_config)) { | |
bdcbd8e0 | 638 | mpl_dbg(sdata, "Mesh plink: missing necessary ie\n"); |
c3896d2c LCC |
639 | return; |
640 | } | |
641 | /* Note the lines below are correct, the llid in the frame is the plid | |
642 | * from the point of view of this host. | |
643 | */ | |
8db09850 | 644 | memcpy(&plid, PLINK_GET_LLID(elems.peering), 2); |
54ef656b | 645 | if (ftype == WLAN_SP_MESH_PEERING_CONFIRM || |
8db09850 TP |
646 | (ftype == WLAN_SP_MESH_PEERING_CLOSE && ie_len == 8)) |
647 | memcpy(&llid, PLINK_GET_PLID(elems.peering), 2); | |
c3896d2c | 648 | |
d0709a65 JB |
649 | rcu_read_lock(); |
650 | ||
abe60632 | 651 | sta = sta_info_get(sdata, mgmt->sa); |
54ef656b | 652 | if (!sta && ftype != WLAN_SP_MESH_PEERING_OPEN) { |
bdcbd8e0 | 653 | mpl_dbg(sdata, "Mesh plink: cls or cnf from unknown peer\n"); |
d0709a65 | 654 | rcu_read_unlock(); |
c3896d2c LCC |
655 | return; |
656 | } | |
657 | ||
55335137 | 658 | if (ftype == WLAN_SP_MESH_PEERING_OPEN && |
3d4f9699 | 659 | !rssi_threshold_check(sta, sdata)) { |
bdcbd8e0 | 660 | mpl_dbg(sdata, "Mesh plink: %pM does not meet rssi threshold\n", |
3d4f9699 | 661 | mgmt->sa); |
55335137 AN |
662 | rcu_read_unlock(); |
663 | return; | |
664 | } | |
665 | ||
c2c98fde | 666 | if (sta && !test_sta_flag(sta, WLAN_STA_AUTH)) { |
bdcbd8e0 | 667 | mpl_dbg(sdata, "Mesh plink: Action frame from non-authed peer\n"); |
53e80511 JC |
668 | rcu_read_unlock(); |
669 | return; | |
670 | } | |
671 | ||
57cf8043 | 672 | if (sta && sta->plink_state == NL80211_PLINK_BLOCKED) { |
d0709a65 | 673 | rcu_read_unlock(); |
c3896d2c LCC |
674 | return; |
675 | } | |
676 | ||
677 | /* Now we will figure out the appropriate event... */ | |
678 | event = PLINK_UNDEFINED; | |
54ef656b | 679 | if (ftype != WLAN_SP_MESH_PEERING_CLOSE && |
f743ff49 | 680 | !mesh_matches_local(sdata, &elems)) { |
d12c7452 | 681 | matches_local = false; |
c3896d2c | 682 | switch (ftype) { |
54ef656b | 683 | case WLAN_SP_MESH_PEERING_OPEN: |
c3896d2c LCC |
684 | event = OPN_RJCT; |
685 | break; | |
54ef656b | 686 | case WLAN_SP_MESH_PEERING_CONFIRM: |
c3896d2c LCC |
687 | event = CNF_RJCT; |
688 | break; | |
54ef656b | 689 | default: |
c3896d2c LCC |
690 | break; |
691 | } | |
d12c7452 CL |
692 | } |
693 | ||
694 | if (!sta && !matches_local) { | |
695 | rcu_read_unlock(); | |
54ef656b | 696 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
d12c7452 | 697 | llid = 0; |
54ef656b TP |
698 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
699 | mgmt->sa, llid, plid, reason); | |
d12c7452 | 700 | return; |
c3896d2c | 701 | } else if (!sta) { |
54ef656b | 702 | /* ftype == WLAN_SP_MESH_PEERING_OPEN */ |
c3896d2c | 703 | if (!mesh_plink_free_count(sdata)) { |
bdcbd8e0 | 704 | mpl_dbg(sdata, "Mesh plink error: no more free plinks\n"); |
73651ee6 JB |
705 | rcu_read_unlock(); |
706 | return; | |
707 | } | |
c3896d2c | 708 | event = OPN_ACPT; |
d12c7452 | 709 | } else if (matches_local) { |
c3896d2c | 710 | switch (ftype) { |
54ef656b | 711 | case WLAN_SP_MESH_PEERING_OPEN: |
c3896d2c | 712 | if (!mesh_plink_free_count(sdata) || |
d0709a65 | 713 | (sta->plid && sta->plid != plid)) |
c3896d2c LCC |
714 | event = OPN_IGNR; |
715 | else | |
716 | event = OPN_ACPT; | |
717 | break; | |
54ef656b | 718 | case WLAN_SP_MESH_PEERING_CONFIRM: |
c3896d2c | 719 | if (!mesh_plink_free_count(sdata) || |
d0709a65 | 720 | (sta->llid != llid || sta->plid != plid)) |
c3896d2c LCC |
721 | event = CNF_IGNR; |
722 | else | |
723 | event = CNF_ACPT; | |
724 | break; | |
54ef656b | 725 | case WLAN_SP_MESH_PEERING_CLOSE: |
57cf8043 | 726 | if (sta->plink_state == NL80211_PLINK_ESTAB) |
c3896d2c LCC |
727 | /* Do not check for llid or plid. This does not |
728 | * follow the standard but since multiple plinks | |
729 | * per sta are not supported, it is necessary in | |
730 | * order to avoid a livelock when MP A sees an | |
731 | * establish peer link to MP B but MP B does not | |
732 | * see it. This can be caused by a timeout in | |
733 | * B's peer link establishment or B beign | |
734 | * restarted. | |
735 | */ | |
736 | event = CLS_ACPT; | |
737 | else if (sta->plid != plid) | |
738 | event = CLS_IGNR; | |
739 | else if (ie_len == 7 && sta->llid != llid) | |
740 | event = CLS_IGNR; | |
741 | else | |
742 | event = CLS_ACPT; | |
743 | break; | |
744 | default: | |
bdcbd8e0 | 745 | mpl_dbg(sdata, "Mesh plink: unknown frame subtype\n"); |
d0709a65 | 746 | rcu_read_unlock(); |
c3896d2c LCC |
747 | return; |
748 | } | |
54ab1ffb TP |
749 | } |
750 | ||
751 | if (event == OPN_ACPT) { | |
752 | /* allocate sta entry if necessary and update info */ | |
f743ff49 | 753 | sta = mesh_peer_init(sdata, mgmt->sa, &elems); |
54ab1ffb | 754 | if (!sta) { |
bdcbd8e0 | 755 | mpl_dbg(sdata, "Mesh plink: failed to init peer!\n"); |
54ab1ffb TP |
756 | rcu_read_unlock(); |
757 | return; | |
758 | } | |
c3896d2c LCC |
759 | } |
760 | ||
bdcbd8e0 JB |
761 | mpl_dbg(sdata, |
762 | "Mesh plink (peer, state, llid, plid, event): %pM %s %d %d %d\n", | |
1460dd15 | 763 | mgmt->sa, mplstates[sta->plink_state], |
0c68ae26 JB |
764 | le16_to_cpu(sta->llid), le16_to_cpu(sta->plid), |
765 | event); | |
c3896d2c | 766 | reason = 0; |
54ab1ffb | 767 | spin_lock_bh(&sta->lock); |
c3896d2c LCC |
768 | switch (sta->plink_state) { |
769 | /* spin_unlock as soon as state is updated at each case */ | |
57cf8043 | 770 | case NL80211_PLINK_LISTEN: |
c3896d2c LCC |
771 | switch (event) { |
772 | case CLS_ACPT: | |
773 | mesh_plink_fsm_restart(sta); | |
07346f81 | 774 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
775 | break; |
776 | case OPN_ACPT: | |
57cf8043 | 777 | sta->plink_state = NL80211_PLINK_OPN_RCVD; |
c3896d2c LCC |
778 | sta->plid = plid; |
779 | get_random_bytes(&llid, 2); | |
780 | sta->llid = llid; | |
781 | mesh_plink_timer_set(sta, dot11MeshRetryTimeout(sdata)); | |
07346f81 | 782 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
783 | mesh_plink_frame_tx(sdata, |
784 | WLAN_SP_MESH_PEERING_OPEN, | |
785 | sta->sta.addr, llid, 0, 0); | |
786 | mesh_plink_frame_tx(sdata, | |
787 | WLAN_SP_MESH_PEERING_CONFIRM, | |
788 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
789 | break; |
790 | default: | |
07346f81 | 791 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
792 | break; |
793 | } | |
794 | break; | |
795 | ||
57cf8043 | 796 | case NL80211_PLINK_OPN_SNT: |
c3896d2c LCC |
797 | switch (event) { |
798 | case OPN_RJCT: | |
799 | case CNF_RJCT: | |
54ef656b | 800 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
c3896d2c LCC |
801 | case CLS_ACPT: |
802 | if (!reason) | |
54ef656b | 803 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
c3896d2c | 804 | sta->reason = reason; |
57cf8043 | 805 | sta->plink_state = NL80211_PLINK_HOLDING; |
c3896d2c LCC |
806 | if (!mod_plink_timer(sta, |
807 | dot11MeshHoldingTimeout(sdata))) | |
808 | sta->ignore_plink_timer = true; | |
809 | ||
810 | llid = sta->llid; | |
07346f81 | 811 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
812 | mesh_plink_frame_tx(sdata, |
813 | WLAN_SP_MESH_PEERING_CLOSE, | |
814 | sta->sta.addr, llid, plid, reason); | |
c3896d2c LCC |
815 | break; |
816 | case OPN_ACPT: | |
817 | /* retry timer is left untouched */ | |
57cf8043 | 818 | sta->plink_state = NL80211_PLINK_OPN_RCVD; |
c3896d2c LCC |
819 | sta->plid = plid; |
820 | llid = sta->llid; | |
07346f81 | 821 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
822 | mesh_plink_frame_tx(sdata, |
823 | WLAN_SP_MESH_PEERING_CONFIRM, | |
824 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
825 | break; |
826 | case CNF_ACPT: | |
57cf8043 | 827 | sta->plink_state = NL80211_PLINK_CNF_RCVD; |
c3896d2c LCC |
828 | if (!mod_plink_timer(sta, |
829 | dot11MeshConfirmTimeout(sdata))) | |
830 | sta->ignore_plink_timer = true; | |
831 | ||
07346f81 | 832 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
833 | break; |
834 | default: | |
07346f81 | 835 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
836 | break; |
837 | } | |
838 | break; | |
839 | ||
57cf8043 | 840 | case NL80211_PLINK_OPN_RCVD: |
c3896d2c LCC |
841 | switch (event) { |
842 | case OPN_RJCT: | |
843 | case CNF_RJCT: | |
54ef656b | 844 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
c3896d2c LCC |
845 | case CLS_ACPT: |
846 | if (!reason) | |
54ef656b | 847 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
c3896d2c | 848 | sta->reason = reason; |
57cf8043 | 849 | sta->plink_state = NL80211_PLINK_HOLDING; |
c3896d2c LCC |
850 | if (!mod_plink_timer(sta, |
851 | dot11MeshHoldingTimeout(sdata))) | |
852 | sta->ignore_plink_timer = true; | |
853 | ||
854 | llid = sta->llid; | |
07346f81 | 855 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
856 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
857 | sta->sta.addr, llid, plid, reason); | |
c3896d2c LCC |
858 | break; |
859 | case OPN_ACPT: | |
860 | llid = sta->llid; | |
07346f81 | 861 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
862 | mesh_plink_frame_tx(sdata, |
863 | WLAN_SP_MESH_PEERING_CONFIRM, | |
864 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
865 | break; |
866 | case CNF_ACPT: | |
d0709a65 | 867 | del_timer(&sta->plink_timer); |
57cf8043 | 868 | sta->plink_state = NL80211_PLINK_ESTAB; |
07346f81 | 869 | spin_unlock_bh(&sta->lock); |
c9370197 | 870 | mesh_plink_inc_estab_count(sdata); |
57aac7c5 AN |
871 | changed |= mesh_set_ht_prot_mode(sdata); |
872 | changed |= BSS_CHANGED_BEACON; | |
bdcbd8e0 | 873 | mpl_dbg(sdata, "Mesh plink with %pM ESTABLISHED\n", |
0c68ae26 | 874 | sta->sta.addr); |
c3896d2c LCC |
875 | break; |
876 | default: | |
07346f81 | 877 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
878 | break; |
879 | } | |
880 | break; | |
881 | ||
57cf8043 | 882 | case NL80211_PLINK_CNF_RCVD: |
c3896d2c LCC |
883 | switch (event) { |
884 | case OPN_RJCT: | |
885 | case CNF_RJCT: | |
54ef656b | 886 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
c3896d2c LCC |
887 | case CLS_ACPT: |
888 | if (!reason) | |
54ef656b | 889 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
c3896d2c | 890 | sta->reason = reason; |
57cf8043 | 891 | sta->plink_state = NL80211_PLINK_HOLDING; |
c3896d2c LCC |
892 | if (!mod_plink_timer(sta, |
893 | dot11MeshHoldingTimeout(sdata))) | |
894 | sta->ignore_plink_timer = true; | |
895 | ||
896 | llid = sta->llid; | |
07346f81 | 897 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
898 | mesh_plink_frame_tx(sdata, |
899 | WLAN_SP_MESH_PEERING_CLOSE, | |
900 | sta->sta.addr, llid, plid, reason); | |
ff59dc76 | 901 | break; |
c3896d2c | 902 | case OPN_ACPT: |
d0709a65 | 903 | del_timer(&sta->plink_timer); |
57cf8043 | 904 | sta->plink_state = NL80211_PLINK_ESTAB; |
07346f81 | 905 | spin_unlock_bh(&sta->lock); |
c9370197 | 906 | mesh_plink_inc_estab_count(sdata); |
57aac7c5 AN |
907 | changed |= mesh_set_ht_prot_mode(sdata); |
908 | changed |= BSS_CHANGED_BEACON; | |
bdcbd8e0 | 909 | mpl_dbg(sdata, "Mesh plink with %pM ESTABLISHED\n", |
0c68ae26 | 910 | sta->sta.addr); |
54ef656b TP |
911 | mesh_plink_frame_tx(sdata, |
912 | WLAN_SP_MESH_PEERING_CONFIRM, | |
913 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
914 | break; |
915 | default: | |
07346f81 | 916 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
917 | break; |
918 | } | |
919 | break; | |
920 | ||
57cf8043 | 921 | case NL80211_PLINK_ESTAB: |
c3896d2c LCC |
922 | switch (event) { |
923 | case CLS_ACPT: | |
54ef656b | 924 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
c3896d2c | 925 | sta->reason = reason; |
57aac7c5 | 926 | __mesh_plink_deactivate(sta); |
57cf8043 | 927 | sta->plink_state = NL80211_PLINK_HOLDING; |
c3896d2c | 928 | llid = sta->llid; |
d0709a65 | 929 | mod_plink_timer(sta, dot11MeshHoldingTimeout(sdata)); |
07346f81 | 930 | spin_unlock_bh(&sta->lock); |
57aac7c5 AN |
931 | changed |= mesh_set_ht_prot_mode(sdata); |
932 | changed |= BSS_CHANGED_BEACON; | |
54ef656b TP |
933 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
934 | sta->sta.addr, llid, plid, reason); | |
c3896d2c LCC |
935 | break; |
936 | case OPN_ACPT: | |
937 | llid = sta->llid; | |
07346f81 | 938 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
939 | mesh_plink_frame_tx(sdata, |
940 | WLAN_SP_MESH_PEERING_CONFIRM, | |
941 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
942 | break; |
943 | default: | |
07346f81 | 944 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
945 | break; |
946 | } | |
947 | break; | |
57cf8043 | 948 | case NL80211_PLINK_HOLDING: |
c3896d2c LCC |
949 | switch (event) { |
950 | case CLS_ACPT: | |
d0709a65 | 951 | if (del_timer(&sta->plink_timer)) |
c3896d2c | 952 | sta->ignore_plink_timer = 1; |
c3896d2c | 953 | mesh_plink_fsm_restart(sta); |
07346f81 | 954 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
955 | break; |
956 | case OPN_ACPT: | |
957 | case CNF_ACPT: | |
958 | case OPN_RJCT: | |
959 | case CNF_RJCT: | |
960 | llid = sta->llid; | |
961 | reason = sta->reason; | |
07346f81 | 962 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
963 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
964 | sta->sta.addr, llid, plid, reason); | |
c3896d2c LCC |
965 | break; |
966 | default: | |
07346f81 | 967 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
968 | } |
969 | break; | |
970 | default: | |
b4e08ea1 | 971 | /* should not get here, PLINK_BLOCKED is dealt with at the |
3ad2f3fb | 972 | * beginning of the function |
c3896d2c | 973 | */ |
07346f81 | 974 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
975 | break; |
976 | } | |
d0709a65 JB |
977 | |
978 | rcu_read_unlock(); | |
57aac7c5 AN |
979 | |
980 | if (changed) | |
981 | ieee80211_bss_info_change_notify(sdata, changed); | |
c3896d2c | 982 | } |