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 | 50 | static inline |
df323818 | 51 | u32 mesh_plink_inc_estab_count(struct ieee80211_sub_if_data *sdata) |
c3896d2c | 52 | { |
472dbc45 | 53 | atomic_inc(&sdata->u.mesh.mshstats.estab_plinks); |
df323818 | 54 | return mesh_accept_plinks_update(sdata); |
c3896d2c LCC |
55 | } |
56 | ||
57 | static inline | |
df323818 | 58 | u32 mesh_plink_dec_estab_count(struct ieee80211_sub_if_data *sdata) |
c3896d2c | 59 | { |
472dbc45 | 60 | atomic_dec(&sdata->u.mesh.mshstats.estab_plinks); |
df323818 | 61 | return 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 | ||
466f310d | 120 | if (sdata->vif.bss_conf.channel_type == NL80211_CHAN_NO_HT) |
57aac7c5 AN |
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; | |
466f310d JB |
150 | else if (ht20_sta && |
151 | sdata->vif.bss_conf.channel_type > NL80211_CHAN_HT20) | |
57aac7c5 AN |
152 | ht_opmode = IEEE80211_HT_OP_MODE_PROTECTION_20MHZ; |
153 | else | |
154 | ht_opmode = IEEE80211_HT_OP_MODE_PROTECTION_NONE; | |
155 | ||
156 | if (sdata->vif.bss_conf.ht_operation_mode != ht_opmode) { | |
157 | sdata->vif.bss_conf.ht_operation_mode = ht_opmode; | |
70c33eaa | 158 | sdata->u.mesh.mshcfg.ht_opmode = ht_opmode; |
57aac7c5 | 159 | changed = BSS_CHANGED_HT; |
bdcbd8e0 JB |
160 | mpl_dbg(sdata, |
161 | "mesh_plink %pM: protection mode changed to %d\n", | |
57aac7c5 AN |
162 | sdata->vif.addr, ht_opmode); |
163 | } | |
164 | ||
165 | return changed; | |
166 | } | |
167 | ||
c3896d2c | 168 | /** |
c9370197 | 169 | * __mesh_plink_deactivate - deactivate mesh peer link |
c3896d2c LCC |
170 | * |
171 | * @sta: mesh peer link to deactivate | |
172 | * | |
173 | * All mesh paths with this peer as next hop will be flushed | |
df323818 | 174 | * Returns beacon changed flag if the beacon content changed. |
c3896d2c | 175 | * |
07346f81 | 176 | * Locking: the caller must hold sta->lock |
c3896d2c | 177 | */ |
df323818 | 178 | static u32 __mesh_plink_deactivate(struct sta_info *sta) |
c3896d2c | 179 | { |
d0709a65 | 180 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
df323818 | 181 | u32 changed = 0; |
d0709a65 | 182 | |
df323818 MP |
183 | if (sta->plink_state == NL80211_PLINK_ESTAB) |
184 | changed = mesh_plink_dec_estab_count(sdata); | |
57cf8043 | 185 | sta->plink_state = NL80211_PLINK_BLOCKED; |
c3896d2c | 186 | mesh_path_flush_by_nexthop(sta); |
c9370197 | 187 | |
df323818 | 188 | return changed; |
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 | 200 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
df323818 | 201 | u32 changed; |
c9370197 | 202 | |
07346f81 | 203 | spin_lock_bh(&sta->lock); |
df323818 | 204 | changed = __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 | 210 | |
df323818 | 211 | ieee80211_bss_info_change_notify(sdata, changed); |
902acc78 JB |
212 | } |
213 | ||
f698d856 | 214 | static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata, |
54ef656b TP |
215 | enum ieee80211_self_protected_actioncode action, |
216 | u8 *da, __le16 llid, __le16 plid, __le16 reason) { | |
f698d856 | 217 | struct ieee80211_local *local = sdata->local; |
3b69a9c5 | 218 | struct sk_buff *skb; |
e7570dfb | 219 | struct ieee80211_tx_info *info; |
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); | |
f609a43d | 226 | int err = -ENOMEM; |
3b69a9c5 | 227 | |
65e8b0cc | 228 | skb = dev_alloc_skb(local->tx_headroom + |
3b69a9c5 TP |
229 | hdr_len + |
230 | 2 + /* capability info */ | |
231 | 2 + /* AID */ | |
232 | 2 + 8 + /* supported rates */ | |
233 | 2 + (IEEE80211_MAX_SUPP_RATES - 8) + | |
234 | 2 + sdata->u.mesh.mesh_id_len + | |
235 | 2 + sizeof(struct ieee80211_meshconf_ie) + | |
176f3608 | 236 | 2 + sizeof(struct ieee80211_ht_cap) + |
074d46d1 | 237 | 2 + sizeof(struct ieee80211_ht_operation) + |
3b69a9c5 TP |
238 | 2 + 8 + /* peering IE */ |
239 | sdata->u.mesh.ie_len); | |
c3896d2c LCC |
240 | if (!skb) |
241 | return -1; | |
e7570dfb | 242 | info = IEEE80211_SKB_CB(skb); |
65e8b0cc | 243 | skb_reserve(skb, local->tx_headroom); |
3b69a9c5 TP |
244 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, hdr_len); |
245 | memset(mgmt, 0, hdr_len); | |
e7827a70 HH |
246 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
247 | IEEE80211_STYPE_ACTION); | |
c3896d2c | 248 | memcpy(mgmt->da, da, ETH_ALEN); |
47846c9b | 249 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); |
915b5c50 | 250 | memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN); |
8db09850 TP |
251 | mgmt->u.action.category = WLAN_CATEGORY_SELF_PROTECTED; |
252 | mgmt->u.action.u.self_prot.action_code = action; | |
c3896d2c | 253 | |
8db09850 TP |
254 | if (action != WLAN_SP_MESH_PEERING_CLOSE) { |
255 | /* capability info */ | |
256 | pos = skb_put(skb, 2); | |
257 | memset(pos, 0, 2); | |
54ef656b | 258 | if (action == WLAN_SP_MESH_PEERING_CONFIRM) { |
8db09850 TP |
259 | /* AID */ |
260 | pos = skb_put(skb, 2); | |
77fa76bb | 261 | memcpy(pos + 2, &plid, 2); |
c3896d2c | 262 | } |
6b77863b JB |
263 | if (ieee80211_add_srates_ie(sdata, skb, true, |
264 | local->oper_channel->band) || | |
265 | ieee80211_add_ext_srates_ie(sdata, skb, true, | |
266 | local->oper_channel->band) || | |
082ebb0c TP |
267 | mesh_add_rsn_ie(skb, sdata) || |
268 | mesh_add_meshid_ie(skb, sdata) || | |
269 | mesh_add_meshconf_ie(skb, sdata)) | |
f609a43d | 270 | goto free; |
8db09850 | 271 | } else { /* WLAN_SP_MESH_PEERING_CLOSE */ |
e7570dfb | 272 | info->flags |= IEEE80211_TX_CTL_NO_ACK; |
8db09850 | 273 | if (mesh_add_meshid_ie(skb, sdata)) |
f609a43d | 274 | goto free; |
c3896d2c LCC |
275 | } |
276 | ||
8db09850 | 277 | /* Add Mesh Peering Management element */ |
c3896d2c | 278 | switch (action) { |
54ef656b | 279 | case WLAN_SP_MESH_PEERING_OPEN: |
c3896d2c | 280 | break; |
54ef656b | 281 | case WLAN_SP_MESH_PEERING_CONFIRM: |
8db09850 | 282 | ie_len += 2; |
c3896d2c LCC |
283 | include_plid = true; |
284 | break; | |
54ef656b | 285 | case WLAN_SP_MESH_PEERING_CLOSE: |
8db09850 TP |
286 | if (plid) { |
287 | ie_len += 2; | |
c3896d2c LCC |
288 | include_plid = true; |
289 | } | |
8db09850 | 290 | ie_len += 2; /* reason code */ |
c3896d2c | 291 | break; |
8db09850 | 292 | default: |
f609a43d TP |
293 | err = -EINVAL; |
294 | goto free; | |
c3896d2c LCC |
295 | } |
296 | ||
8db09850 | 297 | if (WARN_ON(skb_tailroom(skb) < 2 + ie_len)) |
f609a43d | 298 | goto free; |
8db09850 | 299 | |
c3896d2c | 300 | pos = skb_put(skb, 2 + ie_len); |
8db09850 | 301 | *pos++ = WLAN_EID_PEER_MGMT; |
c3896d2c | 302 | *pos++ = ie_len; |
8db09850 TP |
303 | memcpy(pos, &peering_proto, 2); |
304 | pos += 2; | |
c3896d2c | 305 | memcpy(pos, &llid, 2); |
8db09850 | 306 | pos += 2; |
c3896d2c | 307 | if (include_plid) { |
c3896d2c | 308 | memcpy(pos, &plid, 2); |
8db09850 | 309 | pos += 2; |
c3896d2c | 310 | } |
54ef656b | 311 | if (action == WLAN_SP_MESH_PEERING_CLOSE) { |
c3896d2c | 312 | memcpy(pos, &reason, 2); |
8db09850 | 313 | pos += 2; |
c3896d2c | 314 | } |
176f3608 TP |
315 | |
316 | if (action != WLAN_SP_MESH_PEERING_CLOSE) { | |
317 | if (mesh_add_ht_cap_ie(skb, sdata) || | |
074d46d1 | 318 | mesh_add_ht_oper_ie(skb, sdata)) |
f609a43d | 319 | goto free; |
176f3608 TP |
320 | } |
321 | ||
8db09850 | 322 | if (mesh_add_vendor_ies(skb, sdata)) |
f609a43d | 323 | goto free; |
c3896d2c | 324 | |
62ae67be | 325 | ieee80211_tx_skb(sdata, skb); |
c3896d2c | 326 | return 0; |
f609a43d TP |
327 | free: |
328 | kfree_skb(skb); | |
329 | return err; | |
c3896d2c LCC |
330 | } |
331 | ||
2c53040f BH |
332 | /** |
333 | * mesh_peer_init - initialize new mesh peer and return resulting sta_info | |
54ab1ffb TP |
334 | * |
335 | * @sdata: local meshif | |
336 | * @addr: peer's address | |
54ab1ffb TP |
337 | * @elems: IEs from beacon or mesh peering frame |
338 | * | |
339 | * call under RCU | |
340 | */ | |
341 | static struct sta_info *mesh_peer_init(struct ieee80211_sub_if_data *sdata, | |
f743ff49 | 342 | u8 *addr, |
54ab1ffb | 343 | struct ieee802_11_elems *elems) |
c3896d2c | 344 | { |
f698d856 | 345 | struct ieee80211_local *local = sdata->local; |
f743ff49 | 346 | enum ieee80211_band band = local->oper_channel->band; |
54ab1ffb | 347 | struct ieee80211_supported_band *sband; |
f743ff49 | 348 | u32 rates, basic_rates = 0; |
c3896d2c | 349 | struct sta_info *sta; |
e87278e7 | 350 | bool insert = false; |
c3896d2c | 351 | |
f743ff49 TP |
352 | sband = local->hw.wiphy->bands[band]; |
353 | rates = ieee80211_sta_get_rates(local, elems, band, &basic_rates); | |
d0709a65 | 354 | |
54ab1ffb | 355 | sta = sta_info_get(sdata, addr); |
c3896d2c | 356 | if (!sta) { |
f5c56814 TP |
357 | /* Userspace handles peer allocation when security is enabled */ |
358 | if (sdata->u.mesh.security & IEEE80211_MESH_SEC_AUTHED) { | |
359 | cfg80211_notify_new_peer_candidate(sdata->dev, addr, | |
360 | elems->ie_start, | |
361 | elems->total_len, | |
362 | GFP_ATOMIC); | |
363 | return NULL; | |
364 | } | |
365 | ||
54ab1ffb | 366 | sta = mesh_plink_alloc(sdata, addr); |
34e89507 | 367 | if (!sta) |
54ab1ffb | 368 | return NULL; |
e87278e7 | 369 | insert = true; |
c3896d2c LCC |
370 | } |
371 | ||
54ab1ffb | 372 | spin_lock_bh(&sta->lock); |
c3896d2c | 373 | sta->last_rx = jiffies; |
bae35d92 CYY |
374 | if (sta->plink_state == NL80211_PLINK_ESTAB) { |
375 | spin_unlock_bh(&sta->lock); | |
376 | return sta; | |
377 | } | |
378 | ||
f743ff49 | 379 | sta->sta.supp_rates[band] = rates; |
e76781e4 | 380 | if (elems->ht_cap_elem && |
466f310d | 381 | sdata->vif.bss_conf.channel_type != NL80211_CHAN_NO_HT) |
54ab1ffb TP |
382 | ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, |
383 | elems->ht_cap_elem, | |
384 | &sta->sta.ht_cap); | |
385 | else | |
386 | memset(&sta->sta.ht_cap, 0, sizeof(sta->sta.ht_cap)); | |
387 | ||
57aac7c5 | 388 | if (elems->ht_operation) { |
c7d25828 TP |
389 | if (!(elems->ht_operation->ht_param & |
390 | IEEE80211_HT_PARAM_CHAN_WIDTH_ANY)) | |
391 | sta->sta.ht_cap.cap &= | |
392 | ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
57aac7c5 AN |
393 | sta->ch_type = |
394 | ieee80211_ht_oper_to_channel_type(elems->ht_operation); | |
395 | } | |
c7d25828 | 396 | |
54ab1ffb TP |
397 | rate_control_rate_init(sta); |
398 | spin_unlock_bh(&sta->lock); | |
399 | ||
e87278e7 TP |
400 | if (insert && sta_info_insert(sta)) |
401 | return NULL; | |
402 | ||
54ab1ffb TP |
403 | return sta; |
404 | } | |
405 | ||
f743ff49 TP |
406 | void mesh_neighbour_update(struct ieee80211_sub_if_data *sdata, |
407 | u8 *hw_addr, | |
54ab1ffb TP |
408 | struct ieee802_11_elems *elems) |
409 | { | |
410 | struct sta_info *sta; | |
411 | ||
54ab1ffb | 412 | rcu_read_lock(); |
f743ff49 | 413 | sta = mesh_peer_init(sdata, hw_addr, elems); |
54ab1ffb TP |
414 | if (!sta) |
415 | goto out; | |
416 | ||
1570ca59 | 417 | if (mesh_peer_accepts_plinks(elems) && |
54ab1ffb TP |
418 | sta->plink_state == NL80211_PLINK_LISTEN && |
419 | sdata->u.mesh.accepting_plinks && | |
420 | sdata->u.mesh.mshcfg.auto_open_plinks && | |
421 | rssi_threshold_check(sta, sdata)) | |
c3896d2c LCC |
422 | mesh_plink_open(sta); |
423 | ||
54ab1ffb | 424 | out: |
d0709a65 | 425 | rcu_read_unlock(); |
c3896d2c LCC |
426 | } |
427 | ||
428 | static void mesh_plink_timer(unsigned long data) | |
429 | { | |
430 | struct sta_info *sta; | |
431 | __le16 llid, plid, reason; | |
c3896d2c | 432 | struct ieee80211_sub_if_data *sdata; |
c3896d2c | 433 | |
d0709a65 JB |
434 | /* |
435 | * This STA is valid because sta_info_destroy() will | |
436 | * del_timer_sync() this timer after having made sure | |
437 | * it cannot be readded (by deleting the plink.) | |
438 | */ | |
c3896d2c LCC |
439 | sta = (struct sta_info *) data; |
440 | ||
5bb644a0 JB |
441 | if (sta->sdata->local->quiescing) { |
442 | sta->plink_timer_was_running = true; | |
443 | return; | |
444 | } | |
445 | ||
07346f81 | 446 | spin_lock_bh(&sta->lock); |
c3896d2c LCC |
447 | if (sta->ignore_plink_timer) { |
448 | sta->ignore_plink_timer = false; | |
07346f81 | 449 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
450 | return; |
451 | } | |
bdcbd8e0 JB |
452 | mpl_dbg(sta->sdata, |
453 | "Mesh plink timer for %pM fired on state %d\n", | |
0c68ae26 | 454 | sta->sta.addr, sta->plink_state); |
c3896d2c LCC |
455 | reason = 0; |
456 | llid = sta->llid; | |
457 | plid = sta->plid; | |
d0709a65 | 458 | sdata = sta->sdata; |
c3896d2c LCC |
459 | |
460 | switch (sta->plink_state) { | |
57cf8043 JC |
461 | case NL80211_PLINK_OPN_RCVD: |
462 | case NL80211_PLINK_OPN_SNT: | |
c3896d2c LCC |
463 | /* retry timer */ |
464 | if (sta->plink_retries < dot11MeshMaxRetries(sdata)) { | |
465 | u32 rand; | |
bdcbd8e0 JB |
466 | mpl_dbg(sta->sdata, |
467 | "Mesh plink for %pM (retry, timeout): %d %d\n", | |
0c68ae26 JB |
468 | sta->sta.addr, sta->plink_retries, |
469 | sta->plink_timeout); | |
c3896d2c LCC |
470 | get_random_bytes(&rand, sizeof(u32)); |
471 | sta->plink_timeout = sta->plink_timeout + | |
472 | rand % sta->plink_timeout; | |
473 | ++sta->plink_retries; | |
d0709a65 | 474 | mod_plink_timer(sta, sta->plink_timeout); |
07346f81 | 475 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
476 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_OPEN, |
477 | sta->sta.addr, llid, 0, 0); | |
c3896d2c LCC |
478 | break; |
479 | } | |
54ef656b | 480 | reason = cpu_to_le16(WLAN_REASON_MESH_MAX_RETRIES); |
c3896d2c | 481 | /* fall through on else */ |
57cf8043 | 482 | case NL80211_PLINK_CNF_RCVD: |
c3896d2c LCC |
483 | /* confirm timer */ |
484 | if (!reason) | |
54ef656b | 485 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIRM_TIMEOUT); |
57cf8043 | 486 | sta->plink_state = NL80211_PLINK_HOLDING; |
d0709a65 | 487 | mod_plink_timer(sta, dot11MeshHoldingTimeout(sdata)); |
07346f81 | 488 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
489 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
490 | sta->sta.addr, llid, plid, reason); | |
c3896d2c | 491 | break; |
57cf8043 | 492 | case NL80211_PLINK_HOLDING: |
c3896d2c | 493 | /* holding timer */ |
d0709a65 | 494 | del_timer(&sta->plink_timer); |
c3896d2c | 495 | mesh_plink_fsm_restart(sta); |
07346f81 | 496 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
497 | break; |
498 | default: | |
07346f81 | 499 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
500 | break; |
501 | } | |
c3896d2c LCC |
502 | } |
503 | ||
5bb644a0 JB |
504 | #ifdef CONFIG_PM |
505 | void mesh_plink_quiesce(struct sta_info *sta) | |
506 | { | |
507 | if (del_timer_sync(&sta->plink_timer)) | |
508 | sta->plink_timer_was_running = true; | |
509 | } | |
510 | ||
511 | void mesh_plink_restart(struct sta_info *sta) | |
512 | { | |
513 | if (sta->plink_timer_was_running) { | |
514 | add_timer(&sta->plink_timer); | |
515 | sta->plink_timer_was_running = false; | |
516 | } | |
517 | } | |
518 | #endif | |
519 | ||
c3896d2c LCC |
520 | static inline void mesh_plink_timer_set(struct sta_info *sta, int timeout) |
521 | { | |
522 | sta->plink_timer.expires = jiffies + (HZ * timeout / 1000); | |
523 | sta->plink_timer.data = (unsigned long) sta; | |
524 | sta->plink_timer.function = mesh_plink_timer; | |
525 | sta->plink_timeout = timeout; | |
c3896d2c LCC |
526 | add_timer(&sta->plink_timer); |
527 | } | |
528 | ||
529 | int mesh_plink_open(struct sta_info *sta) | |
530 | { | |
531 | __le16 llid; | |
d0709a65 | 532 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
c3896d2c | 533 | |
c2c98fde | 534 | if (!test_sta_flag(sta, WLAN_STA_AUTH)) |
53e80511 JC |
535 | return -EPERM; |
536 | ||
07346f81 | 537 | spin_lock_bh(&sta->lock); |
c3896d2c LCC |
538 | get_random_bytes(&llid, 2); |
539 | sta->llid = llid; | |
9385d04f CYY |
540 | if (sta->plink_state != NL80211_PLINK_LISTEN && |
541 | sta->plink_state != NL80211_PLINK_BLOCKED) { | |
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 | 558 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
df323818 | 559 | u32 changed; |
c9370197 | 560 | |
07346f81 | 561 | spin_lock_bh(&sta->lock); |
df323818 | 562 | changed = __mesh_plink_deactivate(sta); |
57cf8043 | 563 | sta->plink_state = NL80211_PLINK_BLOCKED; |
07346f81 | 564 | spin_unlock_bh(&sta->lock); |
c9370197 | 565 | |
df323818 | 566 | ieee80211_bss_info_change_notify(sdata, changed); |
c3896d2c LCC |
567 | } |
568 | ||
c3896d2c | 569 | |
f698d856 | 570 | void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_mgmt *mgmt, |
c3896d2c LCC |
571 | size_t len, struct ieee80211_rx_status *rx_status) |
572 | { | |
c3896d2c LCC |
573 | struct ieee802_11_elems elems; |
574 | struct sta_info *sta; | |
575 | enum plink_event event; | |
54ef656b | 576 | enum ieee80211_self_protected_actioncode ftype; |
c3896d2c | 577 | size_t baselen; |
57aac7c5 | 578 | bool matches_local = true; |
c3896d2c LCC |
579 | u8 ie_len; |
580 | u8 *baseaddr; | |
57aac7c5 | 581 | u32 changed = 0; |
c3896d2c | 582 | __le16 plid, llid, reason; |
1460dd15 | 583 | static const char *mplstates[] = { |
57cf8043 JC |
584 | [NL80211_PLINK_LISTEN] = "LISTEN", |
585 | [NL80211_PLINK_OPN_SNT] = "OPN-SNT", | |
586 | [NL80211_PLINK_OPN_RCVD] = "OPN-RCVD", | |
587 | [NL80211_PLINK_CNF_RCVD] = "CNF_RCVD", | |
588 | [NL80211_PLINK_ESTAB] = "ESTAB", | |
589 | [NL80211_PLINK_HOLDING] = "HOLDING", | |
590 | [NL80211_PLINK_BLOCKED] = "BLOCKED" | |
1460dd15 | 591 | }; |
c3896d2c | 592 | |
9c80d3dc JB |
593 | /* need action_code, aux */ |
594 | if (len < IEEE80211_MIN_ACTION_SIZE + 3) | |
595 | return; | |
596 | ||
c3896d2c | 597 | if (is_multicast_ether_addr(mgmt->da)) { |
bdcbd8e0 JB |
598 | mpl_dbg(sdata, |
599 | "Mesh plink: ignore frame from multicast address\n"); | |
c3896d2c LCC |
600 | return; |
601 | } | |
602 | ||
8db09850 TP |
603 | baseaddr = mgmt->u.action.u.self_prot.variable; |
604 | baselen = (u8 *) mgmt->u.action.u.self_prot.variable - (u8 *) mgmt; | |
605 | if (mgmt->u.action.u.self_prot.action_code == | |
54ef656b | 606 | WLAN_SP_MESH_PEERING_CONFIRM) { |
c3896d2c | 607 | baseaddr += 4; |
70bdb6b2 | 608 | baselen += 4; |
c3896d2c LCC |
609 | } |
610 | ieee802_11_parse_elems(baseaddr, len - baselen, &elems); | |
8db09850 | 611 | if (!elems.peering) { |
bdcbd8e0 JB |
612 | mpl_dbg(sdata, |
613 | "Mesh plink: missing necessary peer link ie\n"); | |
c3896d2c LCC |
614 | return; |
615 | } | |
b130e5ce JC |
616 | if (elems.rsn_len && |
617 | sdata->u.mesh.security == IEEE80211_MESH_SEC_NONE) { | |
bdcbd8e0 JB |
618 | mpl_dbg(sdata, |
619 | "Mesh plink: can't establish link with secure peer\n"); | |
5cff5e01 JC |
620 | return; |
621 | } | |
c3896d2c | 622 | |
8db09850 TP |
623 | ftype = mgmt->u.action.u.self_prot.action_code; |
624 | ie_len = elems.peering_len; | |
625 | if ((ftype == WLAN_SP_MESH_PEERING_OPEN && ie_len != 4) || | |
626 | (ftype == WLAN_SP_MESH_PEERING_CONFIRM && ie_len != 6) || | |
627 | (ftype == WLAN_SP_MESH_PEERING_CLOSE && ie_len != 6 | |
628 | && ie_len != 8)) { | |
bdcbd8e0 JB |
629 | mpl_dbg(sdata, |
630 | "Mesh plink: incorrect plink ie length %d %d\n", | |
631 | ftype, ie_len); | |
c3896d2c LCC |
632 | return; |
633 | } | |
634 | ||
54ef656b TP |
635 | if (ftype != WLAN_SP_MESH_PEERING_CLOSE && |
636 | (!elems.mesh_id || !elems.mesh_config)) { | |
bdcbd8e0 | 637 | mpl_dbg(sdata, "Mesh plink: missing necessary ie\n"); |
c3896d2c LCC |
638 | return; |
639 | } | |
640 | /* Note the lines below are correct, the llid in the frame is the plid | |
641 | * from the point of view of this host. | |
642 | */ | |
8db09850 | 643 | memcpy(&plid, PLINK_GET_LLID(elems.peering), 2); |
54ef656b | 644 | if (ftype == WLAN_SP_MESH_PEERING_CONFIRM || |
8db09850 TP |
645 | (ftype == WLAN_SP_MESH_PEERING_CLOSE && ie_len == 8)) |
646 | memcpy(&llid, PLINK_GET_PLID(elems.peering), 2); | |
c3896d2c | 647 | |
d0709a65 JB |
648 | rcu_read_lock(); |
649 | ||
abe60632 | 650 | sta = sta_info_get(sdata, mgmt->sa); |
54ef656b | 651 | if (!sta && ftype != WLAN_SP_MESH_PEERING_OPEN) { |
bdcbd8e0 | 652 | mpl_dbg(sdata, "Mesh plink: cls or cnf from unknown peer\n"); |
d0709a65 | 653 | rcu_read_unlock(); |
c3896d2c LCC |
654 | return; |
655 | } | |
656 | ||
55335137 | 657 | if (ftype == WLAN_SP_MESH_PEERING_OPEN && |
3d4f9699 | 658 | !rssi_threshold_check(sta, sdata)) { |
bdcbd8e0 | 659 | mpl_dbg(sdata, "Mesh plink: %pM does not meet rssi threshold\n", |
3d4f9699 | 660 | mgmt->sa); |
55335137 AN |
661 | rcu_read_unlock(); |
662 | return; | |
663 | } | |
664 | ||
c2c98fde | 665 | if (sta && !test_sta_flag(sta, WLAN_STA_AUTH)) { |
bdcbd8e0 | 666 | mpl_dbg(sdata, "Mesh plink: Action frame from non-authed peer\n"); |
53e80511 JC |
667 | rcu_read_unlock(); |
668 | return; | |
669 | } | |
670 | ||
57cf8043 | 671 | if (sta && sta->plink_state == NL80211_PLINK_BLOCKED) { |
d0709a65 | 672 | rcu_read_unlock(); |
c3896d2c LCC |
673 | return; |
674 | } | |
675 | ||
676 | /* Now we will figure out the appropriate event... */ | |
677 | event = PLINK_UNDEFINED; | |
54ef656b | 678 | if (ftype != WLAN_SP_MESH_PEERING_CLOSE && |
f743ff49 | 679 | !mesh_matches_local(sdata, &elems)) { |
d12c7452 | 680 | matches_local = false; |
c3896d2c | 681 | switch (ftype) { |
54ef656b | 682 | case WLAN_SP_MESH_PEERING_OPEN: |
c3896d2c LCC |
683 | event = OPN_RJCT; |
684 | break; | |
54ef656b | 685 | case WLAN_SP_MESH_PEERING_CONFIRM: |
c3896d2c LCC |
686 | event = CNF_RJCT; |
687 | break; | |
54ef656b | 688 | default: |
c3896d2c LCC |
689 | break; |
690 | } | |
d12c7452 CL |
691 | } |
692 | ||
693 | if (!sta && !matches_local) { | |
694 | rcu_read_unlock(); | |
54ef656b | 695 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
d12c7452 | 696 | llid = 0; |
54ef656b TP |
697 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
698 | mgmt->sa, llid, plid, reason); | |
d12c7452 | 699 | return; |
c3896d2c | 700 | } else if (!sta) { |
54ef656b | 701 | /* ftype == WLAN_SP_MESH_PEERING_OPEN */ |
c3896d2c | 702 | if (!mesh_plink_free_count(sdata)) { |
bdcbd8e0 | 703 | mpl_dbg(sdata, "Mesh plink error: no more free plinks\n"); |
73651ee6 JB |
704 | rcu_read_unlock(); |
705 | return; | |
706 | } | |
c3896d2c | 707 | event = OPN_ACPT; |
d12c7452 | 708 | } else if (matches_local) { |
c3896d2c | 709 | switch (ftype) { |
54ef656b | 710 | case WLAN_SP_MESH_PEERING_OPEN: |
c3896d2c | 711 | if (!mesh_plink_free_count(sdata) || |
d0709a65 | 712 | (sta->plid && sta->plid != plid)) |
c3896d2c LCC |
713 | event = OPN_IGNR; |
714 | else | |
715 | event = OPN_ACPT; | |
716 | break; | |
54ef656b | 717 | case WLAN_SP_MESH_PEERING_CONFIRM: |
c3896d2c | 718 | if (!mesh_plink_free_count(sdata) || |
d0709a65 | 719 | (sta->llid != llid || sta->plid != plid)) |
c3896d2c LCC |
720 | event = CNF_IGNR; |
721 | else | |
722 | event = CNF_ACPT; | |
723 | break; | |
54ef656b | 724 | case WLAN_SP_MESH_PEERING_CLOSE: |
57cf8043 | 725 | if (sta->plink_state == NL80211_PLINK_ESTAB) |
c3896d2c LCC |
726 | /* Do not check for llid or plid. This does not |
727 | * follow the standard but since multiple plinks | |
728 | * per sta are not supported, it is necessary in | |
729 | * order to avoid a livelock when MP A sees an | |
730 | * establish peer link to MP B but MP B does not | |
731 | * see it. This can be caused by a timeout in | |
732 | * B's peer link establishment or B beign | |
733 | * restarted. | |
734 | */ | |
735 | event = CLS_ACPT; | |
736 | else if (sta->plid != plid) | |
737 | event = CLS_IGNR; | |
738 | else if (ie_len == 7 && sta->llid != llid) | |
739 | event = CLS_IGNR; | |
740 | else | |
741 | event = CLS_ACPT; | |
742 | break; | |
743 | default: | |
bdcbd8e0 | 744 | mpl_dbg(sdata, "Mesh plink: unknown frame subtype\n"); |
d0709a65 | 745 | rcu_read_unlock(); |
c3896d2c LCC |
746 | return; |
747 | } | |
54ab1ffb TP |
748 | } |
749 | ||
750 | if (event == OPN_ACPT) { | |
751 | /* allocate sta entry if necessary and update info */ | |
f743ff49 | 752 | sta = mesh_peer_init(sdata, mgmt->sa, &elems); |
54ab1ffb | 753 | if (!sta) { |
bdcbd8e0 | 754 | mpl_dbg(sdata, "Mesh plink: failed to init peer!\n"); |
54ab1ffb TP |
755 | rcu_read_unlock(); |
756 | return; | |
757 | } | |
c3896d2c LCC |
758 | } |
759 | ||
bdcbd8e0 JB |
760 | mpl_dbg(sdata, |
761 | "Mesh plink (peer, state, llid, plid, event): %pM %s %d %d %d\n", | |
1460dd15 | 762 | mgmt->sa, mplstates[sta->plink_state], |
0c68ae26 JB |
763 | le16_to_cpu(sta->llid), le16_to_cpu(sta->plid), |
764 | event); | |
c3896d2c | 765 | reason = 0; |
54ab1ffb | 766 | spin_lock_bh(&sta->lock); |
c3896d2c LCC |
767 | switch (sta->plink_state) { |
768 | /* spin_unlock as soon as state is updated at each case */ | |
57cf8043 | 769 | case NL80211_PLINK_LISTEN: |
c3896d2c LCC |
770 | switch (event) { |
771 | case CLS_ACPT: | |
772 | mesh_plink_fsm_restart(sta); | |
07346f81 | 773 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
774 | break; |
775 | case OPN_ACPT: | |
57cf8043 | 776 | sta->plink_state = NL80211_PLINK_OPN_RCVD; |
c3896d2c LCC |
777 | sta->plid = plid; |
778 | get_random_bytes(&llid, 2); | |
779 | sta->llid = llid; | |
780 | mesh_plink_timer_set(sta, dot11MeshRetryTimeout(sdata)); | |
07346f81 | 781 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
782 | mesh_plink_frame_tx(sdata, |
783 | WLAN_SP_MESH_PEERING_OPEN, | |
784 | sta->sta.addr, llid, 0, 0); | |
785 | mesh_plink_frame_tx(sdata, | |
786 | WLAN_SP_MESH_PEERING_CONFIRM, | |
787 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
788 | break; |
789 | default: | |
07346f81 | 790 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
791 | break; |
792 | } | |
793 | break; | |
794 | ||
57cf8043 | 795 | case NL80211_PLINK_OPN_SNT: |
c3896d2c LCC |
796 | switch (event) { |
797 | case OPN_RJCT: | |
798 | case CNF_RJCT: | |
54ef656b | 799 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
c3896d2c LCC |
800 | case CLS_ACPT: |
801 | if (!reason) | |
54ef656b | 802 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
c3896d2c | 803 | sta->reason = reason; |
57cf8043 | 804 | sta->plink_state = NL80211_PLINK_HOLDING; |
c3896d2c LCC |
805 | if (!mod_plink_timer(sta, |
806 | dot11MeshHoldingTimeout(sdata))) | |
807 | sta->ignore_plink_timer = true; | |
808 | ||
809 | llid = sta->llid; | |
07346f81 | 810 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
811 | mesh_plink_frame_tx(sdata, |
812 | WLAN_SP_MESH_PEERING_CLOSE, | |
813 | sta->sta.addr, llid, plid, reason); | |
c3896d2c LCC |
814 | break; |
815 | case OPN_ACPT: | |
816 | /* retry timer is left untouched */ | |
57cf8043 | 817 | sta->plink_state = NL80211_PLINK_OPN_RCVD; |
c3896d2c LCC |
818 | sta->plid = plid; |
819 | llid = sta->llid; | |
07346f81 | 820 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
821 | mesh_plink_frame_tx(sdata, |
822 | WLAN_SP_MESH_PEERING_CONFIRM, | |
823 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
824 | break; |
825 | case CNF_ACPT: | |
57cf8043 | 826 | sta->plink_state = NL80211_PLINK_CNF_RCVD; |
c3896d2c LCC |
827 | if (!mod_plink_timer(sta, |
828 | dot11MeshConfirmTimeout(sdata))) | |
829 | sta->ignore_plink_timer = true; | |
830 | ||
07346f81 | 831 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
832 | break; |
833 | default: | |
07346f81 | 834 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
835 | break; |
836 | } | |
837 | break; | |
838 | ||
57cf8043 | 839 | case NL80211_PLINK_OPN_RCVD: |
c3896d2c LCC |
840 | switch (event) { |
841 | case OPN_RJCT: | |
842 | case CNF_RJCT: | |
54ef656b | 843 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
c3896d2c LCC |
844 | case CLS_ACPT: |
845 | if (!reason) | |
54ef656b | 846 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
c3896d2c | 847 | sta->reason = reason; |
57cf8043 | 848 | sta->plink_state = NL80211_PLINK_HOLDING; |
c3896d2c LCC |
849 | if (!mod_plink_timer(sta, |
850 | dot11MeshHoldingTimeout(sdata))) | |
851 | sta->ignore_plink_timer = true; | |
852 | ||
853 | llid = sta->llid; | |
07346f81 | 854 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
855 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
856 | sta->sta.addr, llid, plid, reason); | |
c3896d2c LCC |
857 | break; |
858 | case OPN_ACPT: | |
859 | llid = sta->llid; | |
07346f81 | 860 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
861 | mesh_plink_frame_tx(sdata, |
862 | WLAN_SP_MESH_PEERING_CONFIRM, | |
863 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
864 | break; |
865 | case CNF_ACPT: | |
d0709a65 | 866 | del_timer(&sta->plink_timer); |
57cf8043 | 867 | sta->plink_state = NL80211_PLINK_ESTAB; |
07346f81 | 868 | spin_unlock_bh(&sta->lock); |
df323818 | 869 | changed |= mesh_plink_inc_estab_count(sdata); |
57aac7c5 | 870 | changed |= mesh_set_ht_prot_mode(sdata); |
bdcbd8e0 | 871 | mpl_dbg(sdata, "Mesh plink with %pM ESTABLISHED\n", |
0c68ae26 | 872 | sta->sta.addr); |
c3896d2c LCC |
873 | break; |
874 | default: | |
07346f81 | 875 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
876 | break; |
877 | } | |
878 | break; | |
879 | ||
57cf8043 | 880 | case NL80211_PLINK_CNF_RCVD: |
c3896d2c LCC |
881 | switch (event) { |
882 | case OPN_RJCT: | |
883 | case CNF_RJCT: | |
54ef656b | 884 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
c3896d2c LCC |
885 | case CLS_ACPT: |
886 | if (!reason) | |
54ef656b | 887 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
c3896d2c | 888 | sta->reason = reason; |
57cf8043 | 889 | sta->plink_state = NL80211_PLINK_HOLDING; |
c3896d2c LCC |
890 | if (!mod_plink_timer(sta, |
891 | dot11MeshHoldingTimeout(sdata))) | |
892 | sta->ignore_plink_timer = true; | |
893 | ||
894 | llid = sta->llid; | |
07346f81 | 895 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
896 | mesh_plink_frame_tx(sdata, |
897 | WLAN_SP_MESH_PEERING_CLOSE, | |
898 | sta->sta.addr, llid, plid, reason); | |
ff59dc76 | 899 | break; |
c3896d2c | 900 | case OPN_ACPT: |
d0709a65 | 901 | del_timer(&sta->plink_timer); |
57cf8043 | 902 | sta->plink_state = NL80211_PLINK_ESTAB; |
07346f81 | 903 | spin_unlock_bh(&sta->lock); |
df323818 | 904 | changed |= mesh_plink_inc_estab_count(sdata); |
57aac7c5 | 905 | changed |= mesh_set_ht_prot_mode(sdata); |
bdcbd8e0 | 906 | mpl_dbg(sdata, "Mesh plink with %pM ESTABLISHED\n", |
0c68ae26 | 907 | sta->sta.addr); |
54ef656b TP |
908 | mesh_plink_frame_tx(sdata, |
909 | WLAN_SP_MESH_PEERING_CONFIRM, | |
910 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
911 | break; |
912 | default: | |
07346f81 | 913 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
914 | break; |
915 | } | |
916 | break; | |
917 | ||
57cf8043 | 918 | case NL80211_PLINK_ESTAB: |
c3896d2c LCC |
919 | switch (event) { |
920 | case CLS_ACPT: | |
54ef656b | 921 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
c3896d2c | 922 | sta->reason = reason; |
df323818 | 923 | changed |= __mesh_plink_deactivate(sta); |
57cf8043 | 924 | sta->plink_state = NL80211_PLINK_HOLDING; |
c3896d2c | 925 | llid = sta->llid; |
d0709a65 | 926 | mod_plink_timer(sta, dot11MeshHoldingTimeout(sdata)); |
07346f81 | 927 | spin_unlock_bh(&sta->lock); |
57aac7c5 | 928 | changed |= mesh_set_ht_prot_mode(sdata); |
54ef656b TP |
929 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
930 | sta->sta.addr, llid, plid, reason); | |
c3896d2c LCC |
931 | break; |
932 | case OPN_ACPT: | |
933 | llid = sta->llid; | |
07346f81 | 934 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
935 | mesh_plink_frame_tx(sdata, |
936 | WLAN_SP_MESH_PEERING_CONFIRM, | |
937 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
938 | break; |
939 | default: | |
07346f81 | 940 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
941 | break; |
942 | } | |
943 | break; | |
57cf8043 | 944 | case NL80211_PLINK_HOLDING: |
c3896d2c LCC |
945 | switch (event) { |
946 | case CLS_ACPT: | |
d0709a65 | 947 | if (del_timer(&sta->plink_timer)) |
c3896d2c | 948 | sta->ignore_plink_timer = 1; |
c3896d2c | 949 | mesh_plink_fsm_restart(sta); |
07346f81 | 950 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
951 | break; |
952 | case OPN_ACPT: | |
953 | case CNF_ACPT: | |
954 | case OPN_RJCT: | |
955 | case CNF_RJCT: | |
956 | llid = sta->llid; | |
957 | reason = sta->reason; | |
07346f81 | 958 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
959 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
960 | sta->sta.addr, llid, plid, reason); | |
c3896d2c LCC |
961 | break; |
962 | default: | |
07346f81 | 963 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
964 | } |
965 | break; | |
966 | default: | |
b4e08ea1 | 967 | /* should not get here, PLINK_BLOCKED is dealt with at the |
3ad2f3fb | 968 | * beginning of the function |
c3896d2c | 969 | */ |
07346f81 | 970 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
971 | break; |
972 | } | |
d0709a65 JB |
973 | |
974 | rcu_read_unlock(); | |
57aac7c5 AN |
975 | |
976 | if (changed) | |
977 | ieee80211_bss_info_change_notify(sdata, changed); | |
c3896d2c | 978 | } |