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 | ||
3d4f9699 AN |
22 | /* We only need a valid sta if user configured a minimum rssi_threshold. */ |
23 | #define rssi_threshold_check(sta, sdata) \ | |
55335137 | 24 | (sdata->u.mesh.mshcfg.rssi_threshold == 0 ||\ |
3d4f9699 AN |
25 | (sta && (s8) -ewma_read(&sta->avg_signal) > \ |
26 | sdata->u.mesh.mshcfg.rssi_threshold)) | |
55335137 | 27 | |
c3896d2c LCC |
28 | enum plink_event { |
29 | PLINK_UNDEFINED, | |
30 | OPN_ACPT, | |
31 | OPN_RJCT, | |
32 | OPN_IGNR, | |
33 | CNF_ACPT, | |
34 | CNF_RJCT, | |
35 | CNF_IGNR, | |
36 | CLS_ACPT, | |
37 | CLS_IGNR | |
38 | }; | |
39 | ||
ba4a14e1 TP |
40 | static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata, |
41 | enum ieee80211_self_protected_actioncode action, | |
42 | u8 *da, __le16 llid, __le16 plid, __le16 reason); | |
43 | ||
c3896d2c | 44 | static inline |
df323818 | 45 | u32 mesh_plink_inc_estab_count(struct ieee80211_sub_if_data *sdata) |
c3896d2c | 46 | { |
1258d976 | 47 | atomic_inc(&sdata->u.mesh.estab_plinks); |
df323818 | 48 | return mesh_accept_plinks_update(sdata); |
c3896d2c LCC |
49 | } |
50 | ||
51 | static inline | |
df323818 | 52 | u32 mesh_plink_dec_estab_count(struct ieee80211_sub_if_data *sdata) |
c3896d2c | 53 | { |
1258d976 | 54 | atomic_dec(&sdata->u.mesh.estab_plinks); |
df323818 | 55 | return mesh_accept_plinks_update(sdata); |
c3896d2c LCC |
56 | } |
57 | ||
58 | /** | |
59 | * mesh_plink_fsm_restart - restart a mesh peer link finite state machine | |
60 | * | |
23c7a29c | 61 | * @sta: mesh peer link to restart |
c3896d2c | 62 | * |
07346f81 | 63 | * Locking: this function must be called holding sta->lock |
c3896d2c LCC |
64 | */ |
65 | static inline void mesh_plink_fsm_restart(struct sta_info *sta) | |
66 | { | |
57cf8043 | 67 | sta->plink_state = NL80211_PLINK_LISTEN; |
37659ff8 LCC |
68 | sta->llid = sta->plid = sta->reason = 0; |
69 | sta->plink_retries = 0; | |
c3896d2c LCC |
70 | } |
71 | ||
93e5deb1 | 72 | /* |
54ab1ffb | 73 | * Allocate mesh sta entry and insert into station table |
93e5deb1 | 74 | */ |
03e4497e | 75 | static struct sta_info *mesh_plink_alloc(struct ieee80211_sub_if_data *sdata, |
54ab1ffb | 76 | u8 *hw_addr) |
c3896d2c | 77 | { |
c3896d2c LCC |
78 | struct sta_info *sta; |
79 | ||
54ab1ffb | 80 | if (sdata->local->num_sta >= MESH_MAX_PLINKS) |
73651ee6 | 81 | return NULL; |
c3896d2c | 82 | |
34e89507 | 83 | sta = sta_info_alloc(sdata, hw_addr, GFP_KERNEL); |
73651ee6 JB |
84 | if (!sta) |
85 | return NULL; | |
c3896d2c | 86 | |
83d5cc01 JB |
87 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); |
88 | sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); | |
89 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTHORIZED); | |
d9a7ddb0 | 90 | |
c2c98fde | 91 | set_sta_flag(sta, WLAN_STA_WME); |
d9a7ddb0 | 92 | |
c3896d2c LCC |
93 | return sta; |
94 | } | |
95 | ||
2c53040f | 96 | /** |
cbf9322e | 97 | * mesh_set_ht_prot_mode - set correct HT protection mode |
57aac7c5 | 98 | * |
cbf9322e AN |
99 | * Section 9.23.3.5 of IEEE 80211-2012 describes the protection rules for HT |
100 | * mesh STA in a MBSS. Three HT protection modes are supported for now, non-HT | |
101 | * mixed mode, 20MHz-protection and no-protection mode. non-HT mixed mode is | |
102 | * selected if any non-HT peers are present in our MBSS. 20MHz-protection mode | |
103 | * is selected if all peers in our 20/40MHz MBSS support HT and atleast one | |
104 | * HT20 peer is present. Otherwise no-protection mode is selected. | |
57aac7c5 AN |
105 | */ |
106 | static u32 mesh_set_ht_prot_mode(struct ieee80211_sub_if_data *sdata) | |
107 | { | |
108 | struct ieee80211_local *local = sdata->local; | |
109 | struct sta_info *sta; | |
110 | u32 changed = 0; | |
111 | u16 ht_opmode; | |
112 | bool non_ht_sta = false, ht20_sta = false; | |
113 | ||
466f310d | 114 | if (sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) |
57aac7c5 AN |
115 | return 0; |
116 | ||
117 | rcu_read_lock(); | |
118 | list_for_each_entry_rcu(sta, &local->sta_list, list) { | |
cbf9322e AN |
119 | if (sdata != sta->sdata || |
120 | sta->plink_state != NL80211_PLINK_ESTAB) | |
121 | continue; | |
122 | ||
123 | switch (sta->ch_type) { | |
124 | case NL80211_CHAN_NO_HT: | |
bdcbd8e0 JB |
125 | mpl_dbg(sdata, |
126 | "mesh_plink %pM: nonHT sta (%pM) is present\n", | |
cbf9322e AN |
127 | sdata->vif.addr, sta->sta.addr); |
128 | non_ht_sta = true; | |
129 | goto out; | |
130 | case NL80211_CHAN_HT20: | |
bdcbd8e0 JB |
131 | mpl_dbg(sdata, |
132 | "mesh_plink %pM: HT20 sta (%pM) is present\n", | |
cbf9322e AN |
133 | sdata->vif.addr, sta->sta.addr); |
134 | ht20_sta = true; | |
135 | default: | |
136 | break; | |
57aac7c5 AN |
137 | } |
138 | } | |
139 | out: | |
140 | rcu_read_unlock(); | |
141 | ||
142 | if (non_ht_sta) | |
143 | ht_opmode = IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED; | |
466f310d JB |
144 | else if (ht20_sta && |
145 | sdata->vif.bss_conf.channel_type > NL80211_CHAN_HT20) | |
57aac7c5 AN |
146 | ht_opmode = IEEE80211_HT_OP_MODE_PROTECTION_20MHZ; |
147 | else | |
148 | ht_opmode = IEEE80211_HT_OP_MODE_PROTECTION_NONE; | |
149 | ||
150 | if (sdata->vif.bss_conf.ht_operation_mode != ht_opmode) { | |
151 | sdata->vif.bss_conf.ht_operation_mode = ht_opmode; | |
70c33eaa | 152 | sdata->u.mesh.mshcfg.ht_opmode = ht_opmode; |
57aac7c5 | 153 | changed = BSS_CHANGED_HT; |
bdcbd8e0 JB |
154 | mpl_dbg(sdata, |
155 | "mesh_plink %pM: protection mode changed to %d\n", | |
57aac7c5 AN |
156 | sdata->vif.addr, ht_opmode); |
157 | } | |
158 | ||
159 | return changed; | |
160 | } | |
161 | ||
c3896d2c | 162 | /** |
c9370197 | 163 | * __mesh_plink_deactivate - deactivate mesh peer link |
c3896d2c LCC |
164 | * |
165 | * @sta: mesh peer link to deactivate | |
166 | * | |
167 | * All mesh paths with this peer as next hop will be flushed | |
df323818 | 168 | * Returns beacon changed flag if the beacon content changed. |
c3896d2c | 169 | * |
07346f81 | 170 | * Locking: the caller must hold sta->lock |
c3896d2c | 171 | */ |
df323818 | 172 | static u32 __mesh_plink_deactivate(struct sta_info *sta) |
c3896d2c | 173 | { |
d0709a65 | 174 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
df323818 | 175 | u32 changed = 0; |
d0709a65 | 176 | |
df323818 MP |
177 | if (sta->plink_state == NL80211_PLINK_ESTAB) |
178 | changed = mesh_plink_dec_estab_count(sdata); | |
57cf8043 | 179 | sta->plink_state = NL80211_PLINK_BLOCKED; |
c3896d2c | 180 | mesh_path_flush_by_nexthop(sta); |
c9370197 | 181 | |
df323818 | 182 | return changed; |
c3896d2c LCC |
183 | } |
184 | ||
902acc78 | 185 | /** |
c9370197 | 186 | * mesh_plink_deactivate - deactivate mesh peer link |
902acc78 JB |
187 | * |
188 | * @sta: mesh peer link to deactivate | |
189 | * | |
190 | * All mesh paths with this peer as next hop will be flushed | |
191 | */ | |
192 | void mesh_plink_deactivate(struct sta_info *sta) | |
193 | { | |
c9370197 | 194 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
df323818 | 195 | u32 changed; |
c9370197 | 196 | |
07346f81 | 197 | spin_lock_bh(&sta->lock); |
df323818 | 198 | changed = __mesh_plink_deactivate(sta); |
ba4a14e1 TP |
199 | sta->reason = cpu_to_le16(WLAN_REASON_MESH_PEER_CANCELED); |
200 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, | |
201 | sta->sta.addr, sta->llid, sta->plid, | |
202 | sta->reason); | |
07346f81 | 203 | spin_unlock_bh(&sta->lock); |
c9370197 | 204 | |
df323818 | 205 | ieee80211_bss_info_change_notify(sdata, changed); |
902acc78 JB |
206 | } |
207 | ||
f698d856 | 208 | static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata, |
54ef656b TP |
209 | enum ieee80211_self_protected_actioncode action, |
210 | u8 *da, __le16 llid, __le16 plid, __le16 reason) { | |
f698d856 | 211 | struct ieee80211_local *local = sdata->local; |
3b69a9c5 | 212 | struct sk_buff *skb; |
e7570dfb | 213 | struct ieee80211_tx_info *info; |
c3896d2c LCC |
214 | struct ieee80211_mgmt *mgmt; |
215 | bool include_plid = false; | |
8db09850 | 216 | u16 peering_proto = 0; |
3b69a9c5 TP |
217 | u8 *pos, ie_len = 4; |
218 | int hdr_len = offsetof(struct ieee80211_mgmt, u.action.u.self_prot) + | |
219 | sizeof(mgmt->u.action.u.self_prot); | |
f609a43d | 220 | int err = -ENOMEM; |
3b69a9c5 | 221 | |
65e8b0cc | 222 | skb = dev_alloc_skb(local->tx_headroom + |
3b69a9c5 TP |
223 | hdr_len + |
224 | 2 + /* capability info */ | |
225 | 2 + /* AID */ | |
226 | 2 + 8 + /* supported rates */ | |
227 | 2 + (IEEE80211_MAX_SUPP_RATES - 8) + | |
228 | 2 + sdata->u.mesh.mesh_id_len + | |
229 | 2 + sizeof(struct ieee80211_meshconf_ie) + | |
176f3608 | 230 | 2 + sizeof(struct ieee80211_ht_cap) + |
074d46d1 | 231 | 2 + sizeof(struct ieee80211_ht_operation) + |
3b69a9c5 TP |
232 | 2 + 8 + /* peering IE */ |
233 | sdata->u.mesh.ie_len); | |
c3896d2c LCC |
234 | if (!skb) |
235 | return -1; | |
e7570dfb | 236 | info = IEEE80211_SKB_CB(skb); |
65e8b0cc | 237 | skb_reserve(skb, local->tx_headroom); |
3b69a9c5 TP |
238 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, hdr_len); |
239 | memset(mgmt, 0, hdr_len); | |
e7827a70 HH |
240 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
241 | IEEE80211_STYPE_ACTION); | |
c3896d2c | 242 | memcpy(mgmt->da, da, ETH_ALEN); |
47846c9b | 243 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); |
915b5c50 | 244 | memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN); |
8db09850 TP |
245 | mgmt->u.action.category = WLAN_CATEGORY_SELF_PROTECTED; |
246 | mgmt->u.action.u.self_prot.action_code = action; | |
c3896d2c | 247 | |
8db09850 | 248 | if (action != WLAN_SP_MESH_PEERING_CLOSE) { |
55de908a JB |
249 | enum ieee80211_band band = ieee80211_get_sdata_band(sdata); |
250 | ||
8db09850 TP |
251 | /* capability info */ |
252 | pos = skb_put(skb, 2); | |
253 | memset(pos, 0, 2); | |
54ef656b | 254 | if (action == WLAN_SP_MESH_PEERING_CONFIRM) { |
8db09850 TP |
255 | /* AID */ |
256 | pos = skb_put(skb, 2); | |
77fa76bb | 257 | memcpy(pos + 2, &plid, 2); |
c3896d2c | 258 | } |
55de908a JB |
259 | if (ieee80211_add_srates_ie(sdata, skb, true, band) || |
260 | ieee80211_add_ext_srates_ie(sdata, skb, true, band) || | |
082ebb0c TP |
261 | mesh_add_rsn_ie(skb, sdata) || |
262 | mesh_add_meshid_ie(skb, sdata) || | |
263 | mesh_add_meshconf_ie(skb, sdata)) | |
f609a43d | 264 | goto free; |
8db09850 | 265 | } else { /* WLAN_SP_MESH_PEERING_CLOSE */ |
e7570dfb | 266 | info->flags |= IEEE80211_TX_CTL_NO_ACK; |
8db09850 | 267 | if (mesh_add_meshid_ie(skb, sdata)) |
f609a43d | 268 | goto free; |
c3896d2c LCC |
269 | } |
270 | ||
8db09850 | 271 | /* Add Mesh Peering Management element */ |
c3896d2c | 272 | switch (action) { |
54ef656b | 273 | case WLAN_SP_MESH_PEERING_OPEN: |
c3896d2c | 274 | break; |
54ef656b | 275 | case WLAN_SP_MESH_PEERING_CONFIRM: |
8db09850 | 276 | ie_len += 2; |
c3896d2c LCC |
277 | include_plid = true; |
278 | break; | |
54ef656b | 279 | case WLAN_SP_MESH_PEERING_CLOSE: |
8db09850 TP |
280 | if (plid) { |
281 | ie_len += 2; | |
c3896d2c LCC |
282 | include_plid = true; |
283 | } | |
8db09850 | 284 | ie_len += 2; /* reason code */ |
c3896d2c | 285 | break; |
8db09850 | 286 | default: |
f609a43d TP |
287 | err = -EINVAL; |
288 | goto free; | |
c3896d2c LCC |
289 | } |
290 | ||
8db09850 | 291 | if (WARN_ON(skb_tailroom(skb) < 2 + ie_len)) |
f609a43d | 292 | goto free; |
8db09850 | 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)) |
f609a43d | 313 | goto free; |
176f3608 TP |
314 | } |
315 | ||
8db09850 | 316 | if (mesh_add_vendor_ies(skb, sdata)) |
f609a43d | 317 | goto free; |
c3896d2c | 318 | |
62ae67be | 319 | ieee80211_tx_skb(sdata, skb); |
c3896d2c | 320 | return 0; |
f609a43d TP |
321 | free: |
322 | kfree_skb(skb); | |
323 | return err; | |
c3896d2c LCC |
324 | } |
325 | ||
2c53040f BH |
326 | /** |
327 | * mesh_peer_init - initialize new mesh peer and return resulting sta_info | |
54ab1ffb TP |
328 | * |
329 | * @sdata: local meshif | |
330 | * @addr: peer's address | |
54ab1ffb TP |
331 | * @elems: IEs from beacon or mesh peering frame |
332 | * | |
333 | * call under RCU | |
334 | */ | |
335 | static struct sta_info *mesh_peer_init(struct ieee80211_sub_if_data *sdata, | |
f743ff49 | 336 | u8 *addr, |
54ab1ffb | 337 | struct ieee802_11_elems *elems) |
c3896d2c | 338 | { |
f698d856 | 339 | struct ieee80211_local *local = sdata->local; |
55de908a | 340 | enum ieee80211_band band = ieee80211_get_sdata_band(sdata); |
54ab1ffb | 341 | struct ieee80211_supported_band *sband; |
f743ff49 | 342 | u32 rates, basic_rates = 0; |
c3896d2c | 343 | struct sta_info *sta; |
e87278e7 | 344 | bool insert = false; |
c3896d2c | 345 | |
f743ff49 TP |
346 | sband = local->hw.wiphy->bands[band]; |
347 | rates = ieee80211_sta_get_rates(local, elems, band, &basic_rates); | |
d0709a65 | 348 | |
54ab1ffb | 349 | sta = sta_info_get(sdata, addr); |
c3896d2c | 350 | if (!sta) { |
f5c56814 TP |
351 | /* Userspace handles peer allocation when security is enabled */ |
352 | if (sdata->u.mesh.security & IEEE80211_MESH_SEC_AUTHED) { | |
353 | cfg80211_notify_new_peer_candidate(sdata->dev, addr, | |
354 | elems->ie_start, | |
355 | elems->total_len, | |
356 | GFP_ATOMIC); | |
357 | return NULL; | |
358 | } | |
359 | ||
54ab1ffb | 360 | sta = mesh_plink_alloc(sdata, addr); |
34e89507 | 361 | if (!sta) |
54ab1ffb | 362 | return NULL; |
e87278e7 | 363 | insert = true; |
c3896d2c LCC |
364 | } |
365 | ||
54ab1ffb | 366 | spin_lock_bh(&sta->lock); |
c3896d2c | 367 | sta->last_rx = jiffies; |
bae35d92 CYY |
368 | if (sta->plink_state == NL80211_PLINK_ESTAB) { |
369 | spin_unlock_bh(&sta->lock); | |
370 | return sta; | |
371 | } | |
372 | ||
f743ff49 | 373 | sta->sta.supp_rates[band] = rates; |
e76781e4 | 374 | if (elems->ht_cap_elem && |
466f310d | 375 | sdata->vif.bss_conf.channel_type != NL80211_CHAN_NO_HT) |
54ab1ffb TP |
376 | ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, |
377 | elems->ht_cap_elem, | |
378 | &sta->sta.ht_cap); | |
379 | else | |
380 | memset(&sta->sta.ht_cap, 0, sizeof(sta->sta.ht_cap)); | |
381 | ||
57aac7c5 | 382 | if (elems->ht_operation) { |
c7d25828 TP |
383 | if (!(elems->ht_operation->ht_param & |
384 | IEEE80211_HT_PARAM_CHAN_WIDTH_ANY)) | |
385 | sta->sta.ht_cap.cap &= | |
386 | ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
57aac7c5 AN |
387 | sta->ch_type = |
388 | ieee80211_ht_oper_to_channel_type(elems->ht_operation); | |
389 | } | |
c7d25828 | 390 | |
54ab1ffb TP |
391 | rate_control_rate_init(sta); |
392 | spin_unlock_bh(&sta->lock); | |
393 | ||
e87278e7 TP |
394 | if (insert && sta_info_insert(sta)) |
395 | return NULL; | |
396 | ||
54ab1ffb TP |
397 | return sta; |
398 | } | |
399 | ||
f743ff49 TP |
400 | void mesh_neighbour_update(struct ieee80211_sub_if_data *sdata, |
401 | u8 *hw_addr, | |
54ab1ffb TP |
402 | struct ieee802_11_elems *elems) |
403 | { | |
404 | struct sta_info *sta; | |
405 | ||
54ab1ffb | 406 | rcu_read_lock(); |
f743ff49 | 407 | sta = mesh_peer_init(sdata, hw_addr, elems); |
54ab1ffb TP |
408 | if (!sta) |
409 | goto out; | |
410 | ||
1570ca59 | 411 | if (mesh_peer_accepts_plinks(elems) && |
54ab1ffb TP |
412 | sta->plink_state == NL80211_PLINK_LISTEN && |
413 | sdata->u.mesh.accepting_plinks && | |
414 | sdata->u.mesh.mshcfg.auto_open_plinks && | |
415 | rssi_threshold_check(sta, sdata)) | |
c3896d2c LCC |
416 | mesh_plink_open(sta); |
417 | ||
54ab1ffb | 418 | out: |
d0709a65 | 419 | rcu_read_unlock(); |
c3896d2c LCC |
420 | } |
421 | ||
422 | static void mesh_plink_timer(unsigned long data) | |
423 | { | |
424 | struct sta_info *sta; | |
425 | __le16 llid, plid, reason; | |
c3896d2c | 426 | struct ieee80211_sub_if_data *sdata; |
453e66f2 | 427 | struct mesh_config *mshcfg; |
c3896d2c | 428 | |
d0709a65 JB |
429 | /* |
430 | * This STA is valid because sta_info_destroy() will | |
431 | * del_timer_sync() this timer after having made sure | |
432 | * it cannot be readded (by deleting the plink.) | |
433 | */ | |
c3896d2c LCC |
434 | sta = (struct sta_info *) data; |
435 | ||
5bb644a0 JB |
436 | if (sta->sdata->local->quiescing) { |
437 | sta->plink_timer_was_running = true; | |
438 | return; | |
439 | } | |
440 | ||
07346f81 | 441 | spin_lock_bh(&sta->lock); |
c3896d2c LCC |
442 | if (sta->ignore_plink_timer) { |
443 | sta->ignore_plink_timer = false; | |
07346f81 | 444 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
445 | return; |
446 | } | |
bdcbd8e0 JB |
447 | mpl_dbg(sta->sdata, |
448 | "Mesh plink timer for %pM fired on state %d\n", | |
0c68ae26 | 449 | sta->sta.addr, sta->plink_state); |
c3896d2c LCC |
450 | reason = 0; |
451 | llid = sta->llid; | |
452 | plid = sta->plid; | |
d0709a65 | 453 | sdata = sta->sdata; |
453e66f2 | 454 | mshcfg = &sdata->u.mesh.mshcfg; |
c3896d2c LCC |
455 | |
456 | switch (sta->plink_state) { | |
57cf8043 JC |
457 | case NL80211_PLINK_OPN_RCVD: |
458 | case NL80211_PLINK_OPN_SNT: | |
c3896d2c | 459 | /* retry timer */ |
453e66f2 | 460 | if (sta->plink_retries < mshcfg->dot11MeshMaxRetries) { |
c3896d2c | 461 | u32 rand; |
bdcbd8e0 JB |
462 | mpl_dbg(sta->sdata, |
463 | "Mesh plink for %pM (retry, timeout): %d %d\n", | |
0c68ae26 JB |
464 | sta->sta.addr, sta->plink_retries, |
465 | sta->plink_timeout); | |
c3896d2c LCC |
466 | get_random_bytes(&rand, sizeof(u32)); |
467 | sta->plink_timeout = sta->plink_timeout + | |
468 | rand % sta->plink_timeout; | |
469 | ++sta->plink_retries; | |
d0709a65 | 470 | mod_plink_timer(sta, sta->plink_timeout); |
07346f81 | 471 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
472 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_OPEN, |
473 | sta->sta.addr, llid, 0, 0); | |
c3896d2c LCC |
474 | break; |
475 | } | |
54ef656b | 476 | reason = cpu_to_le16(WLAN_REASON_MESH_MAX_RETRIES); |
c3896d2c | 477 | /* fall through on else */ |
57cf8043 | 478 | case NL80211_PLINK_CNF_RCVD: |
c3896d2c LCC |
479 | /* confirm timer */ |
480 | if (!reason) | |
54ef656b | 481 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIRM_TIMEOUT); |
57cf8043 | 482 | sta->plink_state = NL80211_PLINK_HOLDING; |
453e66f2 | 483 | mod_plink_timer(sta, mshcfg->dot11MeshHoldingTimeout); |
07346f81 | 484 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
485 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
486 | sta->sta.addr, llid, plid, reason); | |
c3896d2c | 487 | break; |
57cf8043 | 488 | case NL80211_PLINK_HOLDING: |
c3896d2c | 489 | /* holding timer */ |
d0709a65 | 490 | del_timer(&sta->plink_timer); |
c3896d2c | 491 | mesh_plink_fsm_restart(sta); |
07346f81 | 492 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
493 | break; |
494 | default: | |
07346f81 | 495 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
496 | break; |
497 | } | |
c3896d2c LCC |
498 | } |
499 | ||
5bb644a0 JB |
500 | #ifdef CONFIG_PM |
501 | void mesh_plink_quiesce(struct sta_info *sta) | |
502 | { | |
503 | if (del_timer_sync(&sta->plink_timer)) | |
504 | sta->plink_timer_was_running = true; | |
505 | } | |
506 | ||
507 | void mesh_plink_restart(struct sta_info *sta) | |
508 | { | |
509 | if (sta->plink_timer_was_running) { | |
510 | add_timer(&sta->plink_timer); | |
511 | sta->plink_timer_was_running = false; | |
512 | } | |
513 | } | |
514 | #endif | |
515 | ||
c3896d2c LCC |
516 | static inline void mesh_plink_timer_set(struct sta_info *sta, int timeout) |
517 | { | |
518 | sta->plink_timer.expires = jiffies + (HZ * timeout / 1000); | |
519 | sta->plink_timer.data = (unsigned long) sta; | |
520 | sta->plink_timer.function = mesh_plink_timer; | |
521 | sta->plink_timeout = timeout; | |
c3896d2c LCC |
522 | add_timer(&sta->plink_timer); |
523 | } | |
524 | ||
525 | int mesh_plink_open(struct sta_info *sta) | |
526 | { | |
527 | __le16 llid; | |
d0709a65 | 528 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
c3896d2c | 529 | |
c2c98fde | 530 | if (!test_sta_flag(sta, WLAN_STA_AUTH)) |
53e80511 JC |
531 | return -EPERM; |
532 | ||
07346f81 | 533 | spin_lock_bh(&sta->lock); |
c3896d2c LCC |
534 | get_random_bytes(&llid, 2); |
535 | sta->llid = llid; | |
9385d04f CYY |
536 | if (sta->plink_state != NL80211_PLINK_LISTEN && |
537 | sta->plink_state != NL80211_PLINK_BLOCKED) { | |
07346f81 | 538 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
539 | return -EBUSY; |
540 | } | |
57cf8043 | 541 | sta->plink_state = NL80211_PLINK_OPN_SNT; |
453e66f2 | 542 | mesh_plink_timer_set(sta, sdata->u.mesh.mshcfg.dot11MeshRetryTimeout); |
07346f81 | 543 | spin_unlock_bh(&sta->lock); |
bdcbd8e0 JB |
544 | mpl_dbg(sdata, |
545 | "Mesh plink: starting establishment with %pM\n", | |
0c68ae26 | 546 | sta->sta.addr); |
c3896d2c | 547 | |
54ef656b | 548 | return mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_OPEN, |
17741cdc | 549 | sta->sta.addr, llid, 0, 0); |
c3896d2c LCC |
550 | } |
551 | ||
552 | void mesh_plink_block(struct sta_info *sta) | |
553 | { | |
c9370197 | 554 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
df323818 | 555 | u32 changed; |
c9370197 | 556 | |
07346f81 | 557 | spin_lock_bh(&sta->lock); |
df323818 | 558 | changed = __mesh_plink_deactivate(sta); |
57cf8043 | 559 | sta->plink_state = NL80211_PLINK_BLOCKED; |
07346f81 | 560 | spin_unlock_bh(&sta->lock); |
c9370197 | 561 | |
df323818 | 562 | ieee80211_bss_info_change_notify(sdata, changed); |
c3896d2c LCC |
563 | } |
564 | ||
c3896d2c | 565 | |
f698d856 | 566 | void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_mgmt *mgmt, |
c3896d2c LCC |
567 | size_t len, struct ieee80211_rx_status *rx_status) |
568 | { | |
453e66f2 | 569 | struct mesh_config *mshcfg = &sdata->u.mesh.mshcfg; |
c3896d2c LCC |
570 | struct ieee802_11_elems elems; |
571 | struct sta_info *sta; | |
572 | enum plink_event event; | |
54ef656b | 573 | enum ieee80211_self_protected_actioncode ftype; |
c3896d2c | 574 | size_t baselen; |
57aac7c5 | 575 | bool matches_local = true; |
c3896d2c LCC |
576 | u8 ie_len; |
577 | u8 *baseaddr; | |
57aac7c5 | 578 | u32 changed = 0; |
c3896d2c | 579 | __le16 plid, llid, reason; |
1460dd15 | 580 | static const char *mplstates[] = { |
57cf8043 JC |
581 | [NL80211_PLINK_LISTEN] = "LISTEN", |
582 | [NL80211_PLINK_OPN_SNT] = "OPN-SNT", | |
583 | [NL80211_PLINK_OPN_RCVD] = "OPN-RCVD", | |
584 | [NL80211_PLINK_CNF_RCVD] = "CNF_RCVD", | |
585 | [NL80211_PLINK_ESTAB] = "ESTAB", | |
586 | [NL80211_PLINK_HOLDING] = "HOLDING", | |
587 | [NL80211_PLINK_BLOCKED] = "BLOCKED" | |
1460dd15 | 588 | }; |
c3896d2c | 589 | |
9c80d3dc JB |
590 | /* need action_code, aux */ |
591 | if (len < IEEE80211_MIN_ACTION_SIZE + 3) | |
592 | return; | |
593 | ||
c3896d2c | 594 | if (is_multicast_ether_addr(mgmt->da)) { |
bdcbd8e0 JB |
595 | mpl_dbg(sdata, |
596 | "Mesh plink: ignore frame from multicast address\n"); | |
c3896d2c LCC |
597 | return; |
598 | } | |
599 | ||
8db09850 TP |
600 | baseaddr = mgmt->u.action.u.self_prot.variable; |
601 | baselen = (u8 *) mgmt->u.action.u.self_prot.variable - (u8 *) mgmt; | |
602 | if (mgmt->u.action.u.self_prot.action_code == | |
54ef656b | 603 | WLAN_SP_MESH_PEERING_CONFIRM) { |
c3896d2c | 604 | baseaddr += 4; |
70bdb6b2 | 605 | baselen += 4; |
c3896d2c LCC |
606 | } |
607 | ieee802_11_parse_elems(baseaddr, len - baselen, &elems); | |
8db09850 | 608 | if (!elems.peering) { |
bdcbd8e0 JB |
609 | mpl_dbg(sdata, |
610 | "Mesh plink: missing necessary peer link ie\n"); | |
c3896d2c LCC |
611 | return; |
612 | } | |
b130e5ce JC |
613 | if (elems.rsn_len && |
614 | sdata->u.mesh.security == IEEE80211_MESH_SEC_NONE) { | |
bdcbd8e0 JB |
615 | mpl_dbg(sdata, |
616 | "Mesh plink: can't establish link with secure peer\n"); | |
5cff5e01 JC |
617 | return; |
618 | } | |
c3896d2c | 619 | |
8db09850 TP |
620 | ftype = mgmt->u.action.u.self_prot.action_code; |
621 | ie_len = elems.peering_len; | |
622 | if ((ftype == WLAN_SP_MESH_PEERING_OPEN && ie_len != 4) || | |
623 | (ftype == WLAN_SP_MESH_PEERING_CONFIRM && ie_len != 6) || | |
624 | (ftype == WLAN_SP_MESH_PEERING_CLOSE && ie_len != 6 | |
625 | && ie_len != 8)) { | |
bdcbd8e0 JB |
626 | mpl_dbg(sdata, |
627 | "Mesh plink: incorrect plink ie length %d %d\n", | |
628 | ftype, ie_len); | |
c3896d2c LCC |
629 | return; |
630 | } | |
631 | ||
54ef656b TP |
632 | if (ftype != WLAN_SP_MESH_PEERING_CLOSE && |
633 | (!elems.mesh_id || !elems.mesh_config)) { | |
bdcbd8e0 | 634 | mpl_dbg(sdata, "Mesh plink: missing necessary ie\n"); |
c3896d2c LCC |
635 | return; |
636 | } | |
637 | /* Note the lines below are correct, the llid in the frame is the plid | |
638 | * from the point of view of this host. | |
639 | */ | |
8db09850 | 640 | memcpy(&plid, PLINK_GET_LLID(elems.peering), 2); |
54ef656b | 641 | if (ftype == WLAN_SP_MESH_PEERING_CONFIRM || |
8db09850 TP |
642 | (ftype == WLAN_SP_MESH_PEERING_CLOSE && ie_len == 8)) |
643 | memcpy(&llid, PLINK_GET_PLID(elems.peering), 2); | |
c3896d2c | 644 | |
d0709a65 JB |
645 | rcu_read_lock(); |
646 | ||
abe60632 | 647 | sta = sta_info_get(sdata, mgmt->sa); |
54ef656b | 648 | if (!sta && ftype != WLAN_SP_MESH_PEERING_OPEN) { |
bdcbd8e0 | 649 | mpl_dbg(sdata, "Mesh plink: cls or cnf from unknown peer\n"); |
d0709a65 | 650 | rcu_read_unlock(); |
c3896d2c LCC |
651 | return; |
652 | } | |
653 | ||
55335137 | 654 | if (ftype == WLAN_SP_MESH_PEERING_OPEN && |
3d4f9699 | 655 | !rssi_threshold_check(sta, sdata)) { |
bdcbd8e0 | 656 | mpl_dbg(sdata, "Mesh plink: %pM does not meet rssi threshold\n", |
3d4f9699 | 657 | mgmt->sa); |
55335137 AN |
658 | rcu_read_unlock(); |
659 | return; | |
660 | } | |
661 | ||
c2c98fde | 662 | if (sta && !test_sta_flag(sta, WLAN_STA_AUTH)) { |
bdcbd8e0 | 663 | mpl_dbg(sdata, "Mesh plink: Action frame from non-authed peer\n"); |
53e80511 JC |
664 | rcu_read_unlock(); |
665 | return; | |
666 | } | |
667 | ||
57cf8043 | 668 | if (sta && sta->plink_state == NL80211_PLINK_BLOCKED) { |
d0709a65 | 669 | rcu_read_unlock(); |
c3896d2c LCC |
670 | return; |
671 | } | |
672 | ||
673 | /* Now we will figure out the appropriate event... */ | |
674 | event = PLINK_UNDEFINED; | |
54ef656b | 675 | if (ftype != WLAN_SP_MESH_PEERING_CLOSE && |
f743ff49 | 676 | !mesh_matches_local(sdata, &elems)) { |
d12c7452 | 677 | matches_local = false; |
c3896d2c | 678 | switch (ftype) { |
54ef656b | 679 | case WLAN_SP_MESH_PEERING_OPEN: |
c3896d2c LCC |
680 | event = OPN_RJCT; |
681 | break; | |
54ef656b | 682 | case WLAN_SP_MESH_PEERING_CONFIRM: |
c3896d2c LCC |
683 | event = CNF_RJCT; |
684 | break; | |
54ef656b | 685 | default: |
c3896d2c LCC |
686 | break; |
687 | } | |
d12c7452 CL |
688 | } |
689 | ||
690 | if (!sta && !matches_local) { | |
691 | rcu_read_unlock(); | |
54ef656b | 692 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
d12c7452 | 693 | llid = 0; |
54ef656b TP |
694 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
695 | mgmt->sa, llid, plid, reason); | |
d12c7452 | 696 | return; |
c3896d2c | 697 | } else if (!sta) { |
54ef656b | 698 | /* ftype == WLAN_SP_MESH_PEERING_OPEN */ |
c3896d2c | 699 | if (!mesh_plink_free_count(sdata)) { |
bdcbd8e0 | 700 | mpl_dbg(sdata, "Mesh plink error: no more free plinks\n"); |
73651ee6 JB |
701 | rcu_read_unlock(); |
702 | return; | |
703 | } | |
c3896d2c | 704 | event = OPN_ACPT; |
d12c7452 | 705 | } else if (matches_local) { |
c3896d2c | 706 | switch (ftype) { |
54ef656b | 707 | case WLAN_SP_MESH_PEERING_OPEN: |
c3896d2c | 708 | if (!mesh_plink_free_count(sdata) || |
d0709a65 | 709 | (sta->plid && sta->plid != plid)) |
c3896d2c LCC |
710 | event = OPN_IGNR; |
711 | else | |
712 | event = OPN_ACPT; | |
713 | break; | |
54ef656b | 714 | case WLAN_SP_MESH_PEERING_CONFIRM: |
c3896d2c | 715 | if (!mesh_plink_free_count(sdata) || |
d0709a65 | 716 | (sta->llid != llid || sta->plid != plid)) |
c3896d2c LCC |
717 | event = CNF_IGNR; |
718 | else | |
719 | event = CNF_ACPT; | |
720 | break; | |
54ef656b | 721 | case WLAN_SP_MESH_PEERING_CLOSE: |
57cf8043 | 722 | if (sta->plink_state == NL80211_PLINK_ESTAB) |
c3896d2c LCC |
723 | /* Do not check for llid or plid. This does not |
724 | * follow the standard but since multiple plinks | |
725 | * per sta are not supported, it is necessary in | |
726 | * order to avoid a livelock when MP A sees an | |
727 | * establish peer link to MP B but MP B does not | |
728 | * see it. This can be caused by a timeout in | |
729 | * B's peer link establishment or B beign | |
730 | * restarted. | |
731 | */ | |
732 | event = CLS_ACPT; | |
733 | else if (sta->plid != plid) | |
734 | event = CLS_IGNR; | |
735 | else if (ie_len == 7 && sta->llid != llid) | |
736 | event = CLS_IGNR; | |
737 | else | |
738 | event = CLS_ACPT; | |
739 | break; | |
740 | default: | |
bdcbd8e0 | 741 | mpl_dbg(sdata, "Mesh plink: unknown frame subtype\n"); |
d0709a65 | 742 | rcu_read_unlock(); |
c3896d2c LCC |
743 | return; |
744 | } | |
54ab1ffb TP |
745 | } |
746 | ||
747 | if (event == OPN_ACPT) { | |
748 | /* allocate sta entry if necessary and update info */ | |
f743ff49 | 749 | sta = mesh_peer_init(sdata, mgmt->sa, &elems); |
54ab1ffb | 750 | if (!sta) { |
bdcbd8e0 | 751 | mpl_dbg(sdata, "Mesh plink: failed to init peer!\n"); |
54ab1ffb TP |
752 | rcu_read_unlock(); |
753 | return; | |
754 | } | |
c3896d2c LCC |
755 | } |
756 | ||
bdcbd8e0 JB |
757 | mpl_dbg(sdata, |
758 | "Mesh plink (peer, state, llid, plid, event): %pM %s %d %d %d\n", | |
1460dd15 | 759 | mgmt->sa, mplstates[sta->plink_state], |
0c68ae26 JB |
760 | le16_to_cpu(sta->llid), le16_to_cpu(sta->plid), |
761 | event); | |
c3896d2c | 762 | reason = 0; |
54ab1ffb | 763 | spin_lock_bh(&sta->lock); |
c3896d2c LCC |
764 | switch (sta->plink_state) { |
765 | /* spin_unlock as soon as state is updated at each case */ | |
57cf8043 | 766 | case NL80211_PLINK_LISTEN: |
c3896d2c LCC |
767 | switch (event) { |
768 | case CLS_ACPT: | |
769 | mesh_plink_fsm_restart(sta); | |
07346f81 | 770 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
771 | break; |
772 | case OPN_ACPT: | |
57cf8043 | 773 | sta->plink_state = NL80211_PLINK_OPN_RCVD; |
c3896d2c LCC |
774 | sta->plid = plid; |
775 | get_random_bytes(&llid, 2); | |
776 | sta->llid = llid; | |
453e66f2 MP |
777 | mesh_plink_timer_set(sta, |
778 | mshcfg->dot11MeshRetryTimeout); | |
07346f81 | 779 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
780 | mesh_plink_frame_tx(sdata, |
781 | WLAN_SP_MESH_PEERING_OPEN, | |
782 | sta->sta.addr, llid, 0, 0); | |
783 | mesh_plink_frame_tx(sdata, | |
784 | WLAN_SP_MESH_PEERING_CONFIRM, | |
785 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
786 | break; |
787 | default: | |
07346f81 | 788 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
789 | break; |
790 | } | |
791 | break; | |
792 | ||
57cf8043 | 793 | case NL80211_PLINK_OPN_SNT: |
c3896d2c LCC |
794 | switch (event) { |
795 | case OPN_RJCT: | |
796 | case CNF_RJCT: | |
54ef656b | 797 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
c3896d2c LCC |
798 | case CLS_ACPT: |
799 | if (!reason) | |
54ef656b | 800 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
c3896d2c | 801 | sta->reason = reason; |
57cf8043 | 802 | sta->plink_state = NL80211_PLINK_HOLDING; |
c3896d2c | 803 | if (!mod_plink_timer(sta, |
453e66f2 | 804 | mshcfg->dot11MeshHoldingTimeout)) |
c3896d2c LCC |
805 | sta->ignore_plink_timer = true; |
806 | ||
807 | llid = sta->llid; | |
07346f81 | 808 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
809 | mesh_plink_frame_tx(sdata, |
810 | WLAN_SP_MESH_PEERING_CLOSE, | |
811 | sta->sta.addr, llid, plid, reason); | |
c3896d2c LCC |
812 | break; |
813 | case OPN_ACPT: | |
814 | /* retry timer is left untouched */ | |
57cf8043 | 815 | sta->plink_state = NL80211_PLINK_OPN_RCVD; |
c3896d2c LCC |
816 | sta->plid = plid; |
817 | llid = sta->llid; | |
07346f81 | 818 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
819 | mesh_plink_frame_tx(sdata, |
820 | WLAN_SP_MESH_PEERING_CONFIRM, | |
821 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
822 | break; |
823 | case CNF_ACPT: | |
57cf8043 | 824 | sta->plink_state = NL80211_PLINK_CNF_RCVD; |
c3896d2c | 825 | if (!mod_plink_timer(sta, |
453e66f2 | 826 | mshcfg->dot11MeshConfirmTimeout)) |
c3896d2c LCC |
827 | sta->ignore_plink_timer = true; |
828 | ||
07346f81 | 829 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
830 | break; |
831 | default: | |
07346f81 | 832 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
833 | break; |
834 | } | |
835 | break; | |
836 | ||
57cf8043 | 837 | case NL80211_PLINK_OPN_RCVD: |
c3896d2c LCC |
838 | switch (event) { |
839 | case OPN_RJCT: | |
840 | case CNF_RJCT: | |
54ef656b | 841 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
c3896d2c LCC |
842 | case CLS_ACPT: |
843 | if (!reason) | |
54ef656b | 844 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
c3896d2c | 845 | sta->reason = reason; |
57cf8043 | 846 | sta->plink_state = NL80211_PLINK_HOLDING; |
c3896d2c | 847 | if (!mod_plink_timer(sta, |
453e66f2 | 848 | mshcfg->dot11MeshHoldingTimeout)) |
c3896d2c LCC |
849 | sta->ignore_plink_timer = true; |
850 | ||
851 | llid = sta->llid; | |
07346f81 | 852 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
853 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
854 | sta->sta.addr, llid, plid, reason); | |
c3896d2c LCC |
855 | break; |
856 | case OPN_ACPT: | |
857 | llid = sta->llid; | |
07346f81 | 858 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
859 | mesh_plink_frame_tx(sdata, |
860 | WLAN_SP_MESH_PEERING_CONFIRM, | |
861 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
862 | break; |
863 | case CNF_ACPT: | |
d0709a65 | 864 | del_timer(&sta->plink_timer); |
57cf8043 | 865 | sta->plink_state = NL80211_PLINK_ESTAB; |
07346f81 | 866 | spin_unlock_bh(&sta->lock); |
df323818 | 867 | changed |= mesh_plink_inc_estab_count(sdata); |
57aac7c5 | 868 | changed |= mesh_set_ht_prot_mode(sdata); |
bdcbd8e0 | 869 | mpl_dbg(sdata, "Mesh plink with %pM ESTABLISHED\n", |
0c68ae26 | 870 | sta->sta.addr); |
c3896d2c LCC |
871 | break; |
872 | default: | |
07346f81 | 873 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
874 | break; |
875 | } | |
876 | break; | |
877 | ||
57cf8043 | 878 | case NL80211_PLINK_CNF_RCVD: |
c3896d2c LCC |
879 | switch (event) { |
880 | case OPN_RJCT: | |
881 | case CNF_RJCT: | |
54ef656b | 882 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
c3896d2c LCC |
883 | case CLS_ACPT: |
884 | if (!reason) | |
54ef656b | 885 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
c3896d2c | 886 | sta->reason = reason; |
57cf8043 | 887 | sta->plink_state = NL80211_PLINK_HOLDING; |
c3896d2c | 888 | if (!mod_plink_timer(sta, |
453e66f2 | 889 | mshcfg->dot11MeshHoldingTimeout)) |
c3896d2c LCC |
890 | sta->ignore_plink_timer = true; |
891 | ||
892 | llid = sta->llid; | |
07346f81 | 893 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
894 | mesh_plink_frame_tx(sdata, |
895 | WLAN_SP_MESH_PEERING_CLOSE, | |
896 | sta->sta.addr, llid, plid, reason); | |
ff59dc76 | 897 | break; |
c3896d2c | 898 | case OPN_ACPT: |
d0709a65 | 899 | del_timer(&sta->plink_timer); |
57cf8043 | 900 | sta->plink_state = NL80211_PLINK_ESTAB; |
07346f81 | 901 | spin_unlock_bh(&sta->lock); |
df323818 | 902 | changed |= mesh_plink_inc_estab_count(sdata); |
57aac7c5 | 903 | changed |= mesh_set_ht_prot_mode(sdata); |
bdcbd8e0 | 904 | mpl_dbg(sdata, "Mesh plink with %pM ESTABLISHED\n", |
0c68ae26 | 905 | sta->sta.addr); |
54ef656b TP |
906 | mesh_plink_frame_tx(sdata, |
907 | WLAN_SP_MESH_PEERING_CONFIRM, | |
908 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
909 | break; |
910 | default: | |
07346f81 | 911 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
912 | break; |
913 | } | |
914 | break; | |
915 | ||
57cf8043 | 916 | case NL80211_PLINK_ESTAB: |
c3896d2c LCC |
917 | switch (event) { |
918 | case CLS_ACPT: | |
54ef656b | 919 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
c3896d2c | 920 | sta->reason = reason; |
df323818 | 921 | changed |= __mesh_plink_deactivate(sta); |
57cf8043 | 922 | sta->plink_state = NL80211_PLINK_HOLDING; |
c3896d2c | 923 | llid = sta->llid; |
453e66f2 | 924 | mod_plink_timer(sta, mshcfg->dot11MeshHoldingTimeout); |
07346f81 | 925 | spin_unlock_bh(&sta->lock); |
57aac7c5 | 926 | changed |= mesh_set_ht_prot_mode(sdata); |
54ef656b TP |
927 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
928 | sta->sta.addr, llid, plid, reason); | |
c3896d2c LCC |
929 | break; |
930 | case OPN_ACPT: | |
931 | llid = sta->llid; | |
07346f81 | 932 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
933 | mesh_plink_frame_tx(sdata, |
934 | WLAN_SP_MESH_PEERING_CONFIRM, | |
935 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
936 | break; |
937 | default: | |
07346f81 | 938 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
939 | break; |
940 | } | |
941 | break; | |
57cf8043 | 942 | case NL80211_PLINK_HOLDING: |
c3896d2c LCC |
943 | switch (event) { |
944 | case CLS_ACPT: | |
d0709a65 | 945 | if (del_timer(&sta->plink_timer)) |
c3896d2c | 946 | sta->ignore_plink_timer = 1; |
c3896d2c | 947 | mesh_plink_fsm_restart(sta); |
07346f81 | 948 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
949 | break; |
950 | case OPN_ACPT: | |
951 | case CNF_ACPT: | |
952 | case OPN_RJCT: | |
953 | case CNF_RJCT: | |
954 | llid = sta->llid; | |
955 | reason = sta->reason; | |
07346f81 | 956 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
957 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
958 | sta->sta.addr, llid, plid, reason); | |
c3896d2c LCC |
959 | break; |
960 | default: | |
07346f81 | 961 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
962 | } |
963 | break; | |
964 | default: | |
b4e08ea1 | 965 | /* should not get here, PLINK_BLOCKED is dealt with at the |
3ad2f3fb | 966 | * beginning of the function |
c3896d2c | 967 | */ |
07346f81 | 968 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
969 | break; |
970 | } | |
d0709a65 JB |
971 | |
972 | rcu_read_unlock(); | |
57aac7c5 AN |
973 | |
974 | if (changed) | |
975 | ieee80211_bss_info_change_notify(sdata, changed); | |
c3896d2c | 976 | } |