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 | ||
4bf88530 | 114 | if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) |
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 | ||
4bf88530 JB |
123 | switch (sta->ch_width) { |
124 | case NL80211_CHAN_WIDTH_20_NOHT: | |
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; | |
4bf88530 | 130 | case NL80211_CHAN_WIDTH_20: |
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 | 144 | else if (ht20_sta && |
4bf88530 | 145 | sdata->vif.bss_conf.chandef.width > NL80211_CHAN_WIDTH_20) |
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 && |
4bf88530 | 375 | sdata->vif.bss_conf.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) |
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) { |
4bf88530 JB |
383 | struct cfg80211_chan_def chandef; |
384 | ||
c7d25828 TP |
385 | if (!(elems->ht_operation->ht_param & |
386 | IEEE80211_HT_PARAM_CHAN_WIDTH_ANY)) | |
387 | sta->sta.ht_cap.cap &= | |
388 | ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; | |
4bf88530 JB |
389 | ieee80211_ht_oper_to_chandef(sdata->vif.bss_conf.chandef.chan, |
390 | elems->ht_operation, &chandef); | |
391 | sta->ch_width = chandef.width; | |
57aac7c5 | 392 | } |
c7d25828 | 393 | |
54ab1ffb TP |
394 | rate_control_rate_init(sta); |
395 | spin_unlock_bh(&sta->lock); | |
396 | ||
e87278e7 TP |
397 | if (insert && sta_info_insert(sta)) |
398 | return NULL; | |
399 | ||
54ab1ffb TP |
400 | return sta; |
401 | } | |
402 | ||
f743ff49 TP |
403 | void mesh_neighbour_update(struct ieee80211_sub_if_data *sdata, |
404 | u8 *hw_addr, | |
54ab1ffb TP |
405 | struct ieee802_11_elems *elems) |
406 | { | |
407 | struct sta_info *sta; | |
408 | ||
54ab1ffb | 409 | rcu_read_lock(); |
f743ff49 | 410 | sta = mesh_peer_init(sdata, hw_addr, elems); |
54ab1ffb TP |
411 | if (!sta) |
412 | goto out; | |
413 | ||
1570ca59 | 414 | if (mesh_peer_accepts_plinks(elems) && |
54ab1ffb TP |
415 | sta->plink_state == NL80211_PLINK_LISTEN && |
416 | sdata->u.mesh.accepting_plinks && | |
417 | sdata->u.mesh.mshcfg.auto_open_plinks && | |
418 | rssi_threshold_check(sta, sdata)) | |
c3896d2c LCC |
419 | mesh_plink_open(sta); |
420 | ||
54ab1ffb | 421 | out: |
d0709a65 | 422 | rcu_read_unlock(); |
c3896d2c LCC |
423 | } |
424 | ||
425 | static void mesh_plink_timer(unsigned long data) | |
426 | { | |
427 | struct sta_info *sta; | |
428 | __le16 llid, plid, reason; | |
c3896d2c | 429 | struct ieee80211_sub_if_data *sdata; |
453e66f2 | 430 | struct mesh_config *mshcfg; |
c3896d2c | 431 | |
d0709a65 JB |
432 | /* |
433 | * This STA is valid because sta_info_destroy() will | |
434 | * del_timer_sync() this timer after having made sure | |
435 | * it cannot be readded (by deleting the plink.) | |
436 | */ | |
c3896d2c LCC |
437 | sta = (struct sta_info *) data; |
438 | ||
5bb644a0 JB |
439 | if (sta->sdata->local->quiescing) { |
440 | sta->plink_timer_was_running = true; | |
441 | return; | |
442 | } | |
443 | ||
07346f81 | 444 | spin_lock_bh(&sta->lock); |
c3896d2c LCC |
445 | if (sta->ignore_plink_timer) { |
446 | sta->ignore_plink_timer = false; | |
07346f81 | 447 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
448 | return; |
449 | } | |
bdcbd8e0 JB |
450 | mpl_dbg(sta->sdata, |
451 | "Mesh plink timer for %pM fired on state %d\n", | |
0c68ae26 | 452 | sta->sta.addr, sta->plink_state); |
c3896d2c LCC |
453 | reason = 0; |
454 | llid = sta->llid; | |
455 | plid = sta->plid; | |
d0709a65 | 456 | sdata = sta->sdata; |
453e66f2 | 457 | mshcfg = &sdata->u.mesh.mshcfg; |
c3896d2c LCC |
458 | |
459 | switch (sta->plink_state) { | |
57cf8043 JC |
460 | case NL80211_PLINK_OPN_RCVD: |
461 | case NL80211_PLINK_OPN_SNT: | |
c3896d2c | 462 | /* retry timer */ |
453e66f2 | 463 | if (sta->plink_retries < mshcfg->dot11MeshMaxRetries) { |
c3896d2c | 464 | u32 rand; |
bdcbd8e0 JB |
465 | mpl_dbg(sta->sdata, |
466 | "Mesh plink for %pM (retry, timeout): %d %d\n", | |
0c68ae26 JB |
467 | sta->sta.addr, sta->plink_retries, |
468 | sta->plink_timeout); | |
c3896d2c LCC |
469 | get_random_bytes(&rand, sizeof(u32)); |
470 | sta->plink_timeout = sta->plink_timeout + | |
471 | rand % sta->plink_timeout; | |
472 | ++sta->plink_retries; | |
d0709a65 | 473 | mod_plink_timer(sta, sta->plink_timeout); |
07346f81 | 474 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
475 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_OPEN, |
476 | sta->sta.addr, llid, 0, 0); | |
c3896d2c LCC |
477 | break; |
478 | } | |
54ef656b | 479 | reason = cpu_to_le16(WLAN_REASON_MESH_MAX_RETRIES); |
c3896d2c | 480 | /* fall through on else */ |
57cf8043 | 481 | case NL80211_PLINK_CNF_RCVD: |
c3896d2c LCC |
482 | /* confirm timer */ |
483 | if (!reason) | |
54ef656b | 484 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIRM_TIMEOUT); |
57cf8043 | 485 | sta->plink_state = NL80211_PLINK_HOLDING; |
453e66f2 | 486 | mod_plink_timer(sta, mshcfg->dot11MeshHoldingTimeout); |
07346f81 | 487 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
488 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
489 | sta->sta.addr, llid, plid, reason); | |
c3896d2c | 490 | break; |
57cf8043 | 491 | case NL80211_PLINK_HOLDING: |
c3896d2c | 492 | /* holding timer */ |
d0709a65 | 493 | del_timer(&sta->plink_timer); |
c3896d2c | 494 | mesh_plink_fsm_restart(sta); |
07346f81 | 495 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
496 | break; |
497 | default: | |
07346f81 | 498 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
499 | break; |
500 | } | |
c3896d2c LCC |
501 | } |
502 | ||
5bb644a0 JB |
503 | #ifdef CONFIG_PM |
504 | void mesh_plink_quiesce(struct sta_info *sta) | |
505 | { | |
506 | if (del_timer_sync(&sta->plink_timer)) | |
507 | sta->plink_timer_was_running = true; | |
508 | } | |
509 | ||
510 | void mesh_plink_restart(struct sta_info *sta) | |
511 | { | |
512 | if (sta->plink_timer_was_running) { | |
513 | add_timer(&sta->plink_timer); | |
514 | sta->plink_timer_was_running = false; | |
515 | } | |
516 | } | |
517 | #endif | |
518 | ||
c3896d2c LCC |
519 | static inline void mesh_plink_timer_set(struct sta_info *sta, int timeout) |
520 | { | |
521 | sta->plink_timer.expires = jiffies + (HZ * timeout / 1000); | |
522 | sta->plink_timer.data = (unsigned long) sta; | |
523 | sta->plink_timer.function = mesh_plink_timer; | |
524 | sta->plink_timeout = timeout; | |
c3896d2c LCC |
525 | add_timer(&sta->plink_timer); |
526 | } | |
527 | ||
528 | int mesh_plink_open(struct sta_info *sta) | |
529 | { | |
530 | __le16 llid; | |
d0709a65 | 531 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
c3896d2c | 532 | |
c2c98fde | 533 | if (!test_sta_flag(sta, WLAN_STA_AUTH)) |
53e80511 JC |
534 | return -EPERM; |
535 | ||
07346f81 | 536 | spin_lock_bh(&sta->lock); |
c3896d2c LCC |
537 | get_random_bytes(&llid, 2); |
538 | sta->llid = llid; | |
9385d04f CYY |
539 | if (sta->plink_state != NL80211_PLINK_LISTEN && |
540 | sta->plink_state != NL80211_PLINK_BLOCKED) { | |
07346f81 | 541 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
542 | return -EBUSY; |
543 | } | |
57cf8043 | 544 | sta->plink_state = NL80211_PLINK_OPN_SNT; |
453e66f2 | 545 | mesh_plink_timer_set(sta, sdata->u.mesh.mshcfg.dot11MeshRetryTimeout); |
07346f81 | 546 | spin_unlock_bh(&sta->lock); |
bdcbd8e0 JB |
547 | mpl_dbg(sdata, |
548 | "Mesh plink: starting establishment with %pM\n", | |
0c68ae26 | 549 | sta->sta.addr); |
c3896d2c | 550 | |
54ef656b | 551 | return mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_OPEN, |
17741cdc | 552 | sta->sta.addr, llid, 0, 0); |
c3896d2c LCC |
553 | } |
554 | ||
555 | void mesh_plink_block(struct sta_info *sta) | |
556 | { | |
c9370197 | 557 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
df323818 | 558 | u32 changed; |
c9370197 | 559 | |
07346f81 | 560 | spin_lock_bh(&sta->lock); |
df323818 | 561 | changed = __mesh_plink_deactivate(sta); |
57cf8043 | 562 | sta->plink_state = NL80211_PLINK_BLOCKED; |
07346f81 | 563 | spin_unlock_bh(&sta->lock); |
c9370197 | 564 | |
df323818 | 565 | ieee80211_bss_info_change_notify(sdata, changed); |
c3896d2c LCC |
566 | } |
567 | ||
c3896d2c | 568 | |
f698d856 | 569 | void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_mgmt *mgmt, |
c3896d2c LCC |
570 | size_t len, struct ieee80211_rx_status *rx_status) |
571 | { | |
453e66f2 | 572 | struct mesh_config *mshcfg = &sdata->u.mesh.mshcfg; |
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; | |
453e66f2 MP |
780 | mesh_plink_timer_set(sta, |
781 | mshcfg->dot11MeshRetryTimeout); | |
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 | 806 | if (!mod_plink_timer(sta, |
453e66f2 | 807 | mshcfg->dot11MeshHoldingTimeout)) |
c3896d2c LCC |
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 | 828 | if (!mod_plink_timer(sta, |
453e66f2 | 829 | mshcfg->dot11MeshConfirmTimeout)) |
c3896d2c LCC |
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 | 850 | if (!mod_plink_timer(sta, |
453e66f2 | 851 | mshcfg->dot11MeshHoldingTimeout)) |
c3896d2c LCC |
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); |
df323818 | 870 | changed |= mesh_plink_inc_estab_count(sdata); |
57aac7c5 | 871 | changed |= mesh_set_ht_prot_mode(sdata); |
bdcbd8e0 | 872 | mpl_dbg(sdata, "Mesh plink with %pM ESTABLISHED\n", |
0c68ae26 | 873 | sta->sta.addr); |
c3896d2c LCC |
874 | break; |
875 | default: | |
07346f81 | 876 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
877 | break; |
878 | } | |
879 | break; | |
880 | ||
57cf8043 | 881 | case NL80211_PLINK_CNF_RCVD: |
c3896d2c LCC |
882 | switch (event) { |
883 | case OPN_RJCT: | |
884 | case CNF_RJCT: | |
54ef656b | 885 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
c3896d2c LCC |
886 | case CLS_ACPT: |
887 | if (!reason) | |
54ef656b | 888 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
c3896d2c | 889 | sta->reason = reason; |
57cf8043 | 890 | sta->plink_state = NL80211_PLINK_HOLDING; |
c3896d2c | 891 | if (!mod_plink_timer(sta, |
453e66f2 | 892 | mshcfg->dot11MeshHoldingTimeout)) |
c3896d2c LCC |
893 | sta->ignore_plink_timer = true; |
894 | ||
895 | llid = sta->llid; | |
07346f81 | 896 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
897 | mesh_plink_frame_tx(sdata, |
898 | WLAN_SP_MESH_PEERING_CLOSE, | |
899 | sta->sta.addr, llid, plid, reason); | |
ff59dc76 | 900 | break; |
c3896d2c | 901 | case OPN_ACPT: |
d0709a65 | 902 | del_timer(&sta->plink_timer); |
57cf8043 | 903 | sta->plink_state = NL80211_PLINK_ESTAB; |
07346f81 | 904 | spin_unlock_bh(&sta->lock); |
df323818 | 905 | changed |= mesh_plink_inc_estab_count(sdata); |
57aac7c5 | 906 | changed |= mesh_set_ht_prot_mode(sdata); |
bdcbd8e0 | 907 | mpl_dbg(sdata, "Mesh plink with %pM ESTABLISHED\n", |
0c68ae26 | 908 | sta->sta.addr); |
54ef656b TP |
909 | mesh_plink_frame_tx(sdata, |
910 | WLAN_SP_MESH_PEERING_CONFIRM, | |
911 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
912 | break; |
913 | default: | |
07346f81 | 914 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
915 | break; |
916 | } | |
917 | break; | |
918 | ||
57cf8043 | 919 | case NL80211_PLINK_ESTAB: |
c3896d2c LCC |
920 | switch (event) { |
921 | case CLS_ACPT: | |
54ef656b | 922 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
c3896d2c | 923 | sta->reason = reason; |
df323818 | 924 | changed |= __mesh_plink_deactivate(sta); |
57cf8043 | 925 | sta->plink_state = NL80211_PLINK_HOLDING; |
c3896d2c | 926 | llid = sta->llid; |
453e66f2 | 927 | mod_plink_timer(sta, mshcfg->dot11MeshHoldingTimeout); |
07346f81 | 928 | spin_unlock_bh(&sta->lock); |
57aac7c5 | 929 | changed |= mesh_set_ht_prot_mode(sdata); |
54ef656b TP |
930 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
931 | sta->sta.addr, llid, plid, reason); | |
c3896d2c LCC |
932 | break; |
933 | case OPN_ACPT: | |
934 | llid = sta->llid; | |
07346f81 | 935 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
936 | mesh_plink_frame_tx(sdata, |
937 | WLAN_SP_MESH_PEERING_CONFIRM, | |
938 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
939 | break; |
940 | default: | |
07346f81 | 941 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
942 | break; |
943 | } | |
944 | break; | |
57cf8043 | 945 | case NL80211_PLINK_HOLDING: |
c3896d2c LCC |
946 | switch (event) { |
947 | case CLS_ACPT: | |
d0709a65 | 948 | if (del_timer(&sta->plink_timer)) |
c3896d2c | 949 | sta->ignore_plink_timer = 1; |
c3896d2c | 950 | mesh_plink_fsm_restart(sta); |
07346f81 | 951 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
952 | break; |
953 | case OPN_ACPT: | |
954 | case CNF_ACPT: | |
955 | case OPN_RJCT: | |
956 | case CNF_RJCT: | |
957 | llid = sta->llid; | |
958 | reason = sta->reason; | |
07346f81 | 959 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
960 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
961 | sta->sta.addr, llid, plid, reason); | |
c3896d2c LCC |
962 | break; |
963 | default: | |
07346f81 | 964 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
965 | } |
966 | break; | |
967 | default: | |
b4e08ea1 | 968 | /* should not get here, PLINK_BLOCKED is dealt with at the |
3ad2f3fb | 969 | * beginning of the function |
c3896d2c | 970 | */ |
07346f81 | 971 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
972 | break; |
973 | } | |
d0709a65 JB |
974 | |
975 | rcu_read_unlock(); | |
57aac7c5 AN |
976 | |
977 | if (changed) | |
978 | ieee80211_bss_info_change_notify(sdata, changed); | |
c3896d2c | 979 | } |