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 | ||
95e48add TP |
40 | static const char * const mplstates[] = { |
41 | [NL80211_PLINK_LISTEN] = "LISTEN", | |
42 | [NL80211_PLINK_OPN_SNT] = "OPN-SNT", | |
43 | [NL80211_PLINK_OPN_RCVD] = "OPN-RCVD", | |
44 | [NL80211_PLINK_CNF_RCVD] = "CNF_RCVD", | |
45 | [NL80211_PLINK_ESTAB] = "ESTAB", | |
46 | [NL80211_PLINK_HOLDING] = "HOLDING", | |
47 | [NL80211_PLINK_BLOCKED] = "BLOCKED" | |
48 | }; | |
49 | ||
50 | static const char * const mplevents[] = { | |
51 | [PLINK_UNDEFINED] = "NONE", | |
52 | [OPN_ACPT] = "OPN_ACPT", | |
53 | [OPN_RJCT] = "OPN_RJCT", | |
54 | [OPN_IGNR] = "OPN_IGNR", | |
55 | [CNF_ACPT] = "CNF_ACPT", | |
56 | [CNF_RJCT] = "CNF_RJCT", | |
57 | [CNF_IGNR] = "CNF_IGNR", | |
58 | [CLS_ACPT] = "CLS_ACPT", | |
59 | [CLS_IGNR] = "CLS_IGNR" | |
60 | }; | |
61 | ||
ba4a14e1 | 62 | static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata, |
bf7cd94d JB |
63 | enum ieee80211_self_protected_actioncode action, |
64 | u8 *da, __le16 llid, __le16 plid, __le16 reason); | |
ba4a14e1 | 65 | |
c3896d2c LCC |
66 | /** |
67 | * mesh_plink_fsm_restart - restart a mesh peer link finite state machine | |
68 | * | |
23c7a29c | 69 | * @sta: mesh peer link to restart |
c3896d2c | 70 | * |
07346f81 | 71 | * Locking: this function must be called holding sta->lock |
c3896d2c LCC |
72 | */ |
73 | static inline void mesh_plink_fsm_restart(struct sta_info *sta) | |
74 | { | |
57cf8043 | 75 | sta->plink_state = NL80211_PLINK_LISTEN; |
37659ff8 LCC |
76 | sta->llid = sta->plid = sta->reason = 0; |
77 | sta->plink_retries = 0; | |
c3896d2c LCC |
78 | } |
79 | ||
3b144658 TP |
80 | /* |
81 | * mesh_set_short_slot_time - enable / disable ERP short slot time. | |
82 | * | |
83 | * The standard indirectly mandates mesh STAs to turn off short slot time by | |
84 | * disallowing advertising this (802.11-2012 8.4.1.4), but that doesn't mean we | |
85 | * can't be sneaky about it. Enable short slot time if all mesh STAs in the | |
86 | * MBSS support ERP rates. | |
87 | * | |
88 | * Returns BSS_CHANGED_ERP_SLOT or 0 for no change. | |
89 | */ | |
90 | static u32 mesh_set_short_slot_time(struct ieee80211_sub_if_data *sdata) | |
91 | { | |
92 | struct ieee80211_local *local = sdata->local; | |
93 | enum ieee80211_band band = ieee80211_get_sdata_band(sdata); | |
94 | struct ieee80211_supported_band *sband = local->hw.wiphy->bands[band]; | |
95 | struct sta_info *sta; | |
96 | u32 erp_rates = 0, changed = 0; | |
97 | int i; | |
98 | bool short_slot = false; | |
99 | ||
100 | if (band == IEEE80211_BAND_5GHZ) { | |
101 | /* (IEEE 802.11-2012 19.4.5) */ | |
102 | short_slot = true; | |
103 | goto out; | |
104 | } else if (band != IEEE80211_BAND_2GHZ || | |
105 | (band == IEEE80211_BAND_2GHZ && | |
106 | local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)) | |
107 | goto out; | |
108 | ||
109 | for (i = 0; i < sband->n_bitrates; i++) | |
110 | if (sband->bitrates[i].flags & IEEE80211_RATE_ERP_G) | |
111 | erp_rates |= BIT(i); | |
112 | ||
113 | if (!erp_rates) | |
114 | goto out; | |
115 | ||
116 | rcu_read_lock(); | |
117 | list_for_each_entry_rcu(sta, &local->sta_list, list) { | |
118 | if (sdata != sta->sdata || | |
119 | sta->plink_state != NL80211_PLINK_ESTAB) | |
120 | continue; | |
121 | ||
122 | short_slot = false; | |
123 | if (erp_rates & sta->sta.supp_rates[band]) | |
124 | short_slot = true; | |
125 | else | |
126 | break; | |
127 | } | |
128 | rcu_read_unlock(); | |
129 | ||
130 | out: | |
131 | if (sdata->vif.bss_conf.use_short_slot != short_slot) { | |
132 | sdata->vif.bss_conf.use_short_slot = short_slot; | |
133 | changed = BSS_CHANGED_ERP_SLOT; | |
134 | mpl_dbg(sdata, "mesh_plink %pM: ERP short slot time %d\n", | |
135 | sdata->vif.addr, short_slot); | |
136 | } | |
137 | return changed; | |
138 | } | |
139 | ||
2c53040f | 140 | /** |
cbf9322e | 141 | * mesh_set_ht_prot_mode - set correct HT protection mode |
57aac7c5 | 142 | * |
cbf9322e AN |
143 | * Section 9.23.3.5 of IEEE 80211-2012 describes the protection rules for HT |
144 | * mesh STA in a MBSS. Three HT protection modes are supported for now, non-HT | |
145 | * mixed mode, 20MHz-protection and no-protection mode. non-HT mixed mode is | |
146 | * selected if any non-HT peers are present in our MBSS. 20MHz-protection mode | |
147 | * is selected if all peers in our 20/40MHz MBSS support HT and atleast one | |
148 | * HT20 peer is present. Otherwise no-protection mode is selected. | |
57aac7c5 AN |
149 | */ |
150 | static u32 mesh_set_ht_prot_mode(struct ieee80211_sub_if_data *sdata) | |
151 | { | |
152 | struct ieee80211_local *local = sdata->local; | |
153 | struct sta_info *sta; | |
57aac7c5 AN |
154 | u16 ht_opmode; |
155 | bool non_ht_sta = false, ht20_sta = false; | |
156 | ||
0418a445 SW |
157 | switch (sdata->vif.bss_conf.chandef.width) { |
158 | case NL80211_CHAN_WIDTH_20_NOHT: | |
159 | case NL80211_CHAN_WIDTH_5: | |
160 | case NL80211_CHAN_WIDTH_10: | |
57aac7c5 | 161 | return 0; |
0418a445 SW |
162 | default: |
163 | break; | |
164 | } | |
57aac7c5 AN |
165 | |
166 | rcu_read_lock(); | |
167 | list_for_each_entry_rcu(sta, &local->sta_list, list) { | |
cbf9322e AN |
168 | if (sdata != sta->sdata || |
169 | sta->plink_state != NL80211_PLINK_ESTAB) | |
170 | continue; | |
171 | ||
52ac8c48 TP |
172 | if (sta->sta.bandwidth > IEEE80211_STA_RX_BW_20) |
173 | continue; | |
174 | ||
175 | if (!sta->sta.ht_cap.ht_supported) { | |
176 | mpl_dbg(sdata, "nonHT sta (%pM) is present\n", | |
177 | sta->sta.addr); | |
cbf9322e | 178 | non_ht_sta = true; |
cbf9322e | 179 | break; |
57aac7c5 | 180 | } |
52ac8c48 TP |
181 | |
182 | mpl_dbg(sdata, "HT20 sta (%pM) is present\n", sta->sta.addr); | |
183 | ht20_sta = true; | |
57aac7c5 | 184 | } |
57aac7c5 AN |
185 | rcu_read_unlock(); |
186 | ||
187 | if (non_ht_sta) | |
188 | ht_opmode = IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED; | |
466f310d | 189 | else if (ht20_sta && |
4bf88530 | 190 | sdata->vif.bss_conf.chandef.width > NL80211_CHAN_WIDTH_20) |
57aac7c5 AN |
191 | ht_opmode = IEEE80211_HT_OP_MODE_PROTECTION_20MHZ; |
192 | else | |
193 | ht_opmode = IEEE80211_HT_OP_MODE_PROTECTION_NONE; | |
194 | ||
52ac8c48 TP |
195 | if (sdata->vif.bss_conf.ht_operation_mode == ht_opmode) |
196 | return 0; | |
57aac7c5 | 197 | |
52ac8c48 TP |
198 | sdata->vif.bss_conf.ht_operation_mode = ht_opmode; |
199 | sdata->u.mesh.mshcfg.ht_opmode = ht_opmode; | |
200 | mpl_dbg(sdata, "selected new HT protection mode %d\n", ht_opmode); | |
201 | return BSS_CHANGED_HT; | |
57aac7c5 AN |
202 | } |
203 | ||
c3896d2c | 204 | /** |
c9370197 | 205 | * __mesh_plink_deactivate - deactivate mesh peer link |
c3896d2c LCC |
206 | * |
207 | * @sta: mesh peer link to deactivate | |
208 | * | |
209 | * All mesh paths with this peer as next hop will be flushed | |
df323818 | 210 | * Returns beacon changed flag if the beacon content changed. |
c3896d2c | 211 | * |
07346f81 | 212 | * Locking: the caller must hold sta->lock |
c3896d2c | 213 | */ |
df323818 | 214 | static u32 __mesh_plink_deactivate(struct sta_info *sta) |
c3896d2c | 215 | { |
d0709a65 | 216 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
df323818 | 217 | u32 changed = 0; |
d0709a65 | 218 | |
df323818 MP |
219 | if (sta->plink_state == NL80211_PLINK_ESTAB) |
220 | changed = mesh_plink_dec_estab_count(sdata); | |
57cf8043 | 221 | sta->plink_state = NL80211_PLINK_BLOCKED; |
c3896d2c | 222 | mesh_path_flush_by_nexthop(sta); |
c9370197 | 223 | |
3f52b7e3 | 224 | ieee80211_mps_sta_status_update(sta); |
446075d7 MP |
225 | changed |= ieee80211_mps_set_sta_local_pm(sta, |
226 | NL80211_MESH_POWER_UNKNOWN); | |
3f52b7e3 | 227 | |
df323818 | 228 | return changed; |
c3896d2c LCC |
229 | } |
230 | ||
902acc78 | 231 | /** |
c9370197 | 232 | * mesh_plink_deactivate - deactivate mesh peer link |
902acc78 JB |
233 | * |
234 | * @sta: mesh peer link to deactivate | |
235 | * | |
236 | * All mesh paths with this peer as next hop will be flushed | |
237 | */ | |
45b5028e | 238 | u32 mesh_plink_deactivate(struct sta_info *sta) |
902acc78 | 239 | { |
c9370197 | 240 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
df323818 | 241 | u32 changed; |
c9370197 | 242 | |
07346f81 | 243 | spin_lock_bh(&sta->lock); |
df323818 | 244 | changed = __mesh_plink_deactivate(sta); |
ba4a14e1 TP |
245 | sta->reason = cpu_to_le16(WLAN_REASON_MESH_PEER_CANCELED); |
246 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, | |
247 | sta->sta.addr, sta->llid, sta->plid, | |
248 | sta->reason); | |
07346f81 | 249 | spin_unlock_bh(&sta->lock); |
c9370197 | 250 | |
45b5028e | 251 | return changed; |
902acc78 JB |
252 | } |
253 | ||
f698d856 | 254 | static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata, |
bf7cd94d JB |
255 | enum ieee80211_self_protected_actioncode action, |
256 | u8 *da, __le16 llid, __le16 plid, __le16 reason) | |
257 | { | |
f698d856 | 258 | struct ieee80211_local *local = sdata->local; |
3b69a9c5 | 259 | struct sk_buff *skb; |
e7570dfb | 260 | struct ieee80211_tx_info *info; |
c3896d2c LCC |
261 | struct ieee80211_mgmt *mgmt; |
262 | bool include_plid = false; | |
8db09850 | 263 | u16 peering_proto = 0; |
3b69a9c5 TP |
264 | u8 *pos, ie_len = 4; |
265 | int hdr_len = offsetof(struct ieee80211_mgmt, u.action.u.self_prot) + | |
266 | sizeof(mgmt->u.action.u.self_prot); | |
f609a43d | 267 | int err = -ENOMEM; |
3b69a9c5 | 268 | |
65e8b0cc | 269 | skb = dev_alloc_skb(local->tx_headroom + |
3b69a9c5 TP |
270 | hdr_len + |
271 | 2 + /* capability info */ | |
272 | 2 + /* AID */ | |
273 | 2 + 8 + /* supported rates */ | |
274 | 2 + (IEEE80211_MAX_SUPP_RATES - 8) + | |
275 | 2 + sdata->u.mesh.mesh_id_len + | |
276 | 2 + sizeof(struct ieee80211_meshconf_ie) + | |
176f3608 | 277 | 2 + sizeof(struct ieee80211_ht_cap) + |
074d46d1 | 278 | 2 + sizeof(struct ieee80211_ht_operation) + |
3b69a9c5 TP |
279 | 2 + 8 + /* peering IE */ |
280 | sdata->u.mesh.ie_len); | |
c3896d2c LCC |
281 | if (!skb) |
282 | return -1; | |
e7570dfb | 283 | info = IEEE80211_SKB_CB(skb); |
65e8b0cc | 284 | skb_reserve(skb, local->tx_headroom); |
3b69a9c5 TP |
285 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, hdr_len); |
286 | memset(mgmt, 0, hdr_len); | |
e7827a70 HH |
287 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
288 | IEEE80211_STYPE_ACTION); | |
c3896d2c | 289 | memcpy(mgmt->da, da, ETH_ALEN); |
47846c9b | 290 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); |
915b5c50 | 291 | memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN); |
8db09850 TP |
292 | mgmt->u.action.category = WLAN_CATEGORY_SELF_PROTECTED; |
293 | mgmt->u.action.u.self_prot.action_code = action; | |
c3896d2c | 294 | |
8db09850 | 295 | if (action != WLAN_SP_MESH_PEERING_CLOSE) { |
55de908a JB |
296 | enum ieee80211_band band = ieee80211_get_sdata_band(sdata); |
297 | ||
8db09850 TP |
298 | /* capability info */ |
299 | pos = skb_put(skb, 2); | |
300 | memset(pos, 0, 2); | |
54ef656b | 301 | if (action == WLAN_SP_MESH_PEERING_CONFIRM) { |
8db09850 TP |
302 | /* AID */ |
303 | pos = skb_put(skb, 2); | |
77fa76bb | 304 | memcpy(pos + 2, &plid, 2); |
c3896d2c | 305 | } |
55de908a JB |
306 | if (ieee80211_add_srates_ie(sdata, skb, true, band) || |
307 | ieee80211_add_ext_srates_ie(sdata, skb, true, band) || | |
bf7cd94d JB |
308 | mesh_add_rsn_ie(sdata, skb) || |
309 | mesh_add_meshid_ie(sdata, skb) || | |
310 | mesh_add_meshconf_ie(sdata, skb)) | |
f609a43d | 311 | goto free; |
8db09850 | 312 | } else { /* WLAN_SP_MESH_PEERING_CLOSE */ |
e7570dfb | 313 | info->flags |= IEEE80211_TX_CTL_NO_ACK; |
bf7cd94d | 314 | if (mesh_add_meshid_ie(sdata, skb)) |
f609a43d | 315 | goto free; |
c3896d2c LCC |
316 | } |
317 | ||
8db09850 | 318 | /* Add Mesh Peering Management element */ |
c3896d2c | 319 | switch (action) { |
54ef656b | 320 | case WLAN_SP_MESH_PEERING_OPEN: |
c3896d2c | 321 | break; |
54ef656b | 322 | case WLAN_SP_MESH_PEERING_CONFIRM: |
8db09850 | 323 | ie_len += 2; |
c3896d2c LCC |
324 | include_plid = true; |
325 | break; | |
54ef656b | 326 | case WLAN_SP_MESH_PEERING_CLOSE: |
8db09850 TP |
327 | if (plid) { |
328 | ie_len += 2; | |
c3896d2c LCC |
329 | include_plid = true; |
330 | } | |
8db09850 | 331 | ie_len += 2; /* reason code */ |
c3896d2c | 332 | break; |
8db09850 | 333 | default: |
f609a43d TP |
334 | err = -EINVAL; |
335 | goto free; | |
c3896d2c LCC |
336 | } |
337 | ||
8db09850 | 338 | if (WARN_ON(skb_tailroom(skb) < 2 + ie_len)) |
f609a43d | 339 | goto free; |
8db09850 | 340 | |
c3896d2c | 341 | pos = skb_put(skb, 2 + ie_len); |
8db09850 | 342 | *pos++ = WLAN_EID_PEER_MGMT; |
c3896d2c | 343 | *pos++ = ie_len; |
8db09850 TP |
344 | memcpy(pos, &peering_proto, 2); |
345 | pos += 2; | |
c3896d2c | 346 | memcpy(pos, &llid, 2); |
8db09850 | 347 | pos += 2; |
c3896d2c | 348 | if (include_plid) { |
c3896d2c | 349 | memcpy(pos, &plid, 2); |
8db09850 | 350 | pos += 2; |
c3896d2c | 351 | } |
54ef656b | 352 | if (action == WLAN_SP_MESH_PEERING_CLOSE) { |
c3896d2c | 353 | memcpy(pos, &reason, 2); |
8db09850 | 354 | pos += 2; |
c3896d2c | 355 | } |
176f3608 TP |
356 | |
357 | if (action != WLAN_SP_MESH_PEERING_CLOSE) { | |
bf7cd94d JB |
358 | if (mesh_add_ht_cap_ie(sdata, skb) || |
359 | mesh_add_ht_oper_ie(sdata, skb)) | |
f609a43d | 360 | goto free; |
176f3608 TP |
361 | } |
362 | ||
bf7cd94d | 363 | if (mesh_add_vendor_ies(sdata, skb)) |
f609a43d | 364 | goto free; |
c3896d2c | 365 | |
62ae67be | 366 | ieee80211_tx_skb(sdata, skb); |
c3896d2c | 367 | return 0; |
f609a43d TP |
368 | free: |
369 | kfree_skb(skb); | |
370 | return err; | |
c3896d2c LCC |
371 | } |
372 | ||
296fcba3 TP |
373 | static void mesh_sta_info_init(struct ieee80211_sub_if_data *sdata, |
374 | struct sta_info *sta, | |
375 | struct ieee802_11_elems *elems, bool insert) | |
c3896d2c | 376 | { |
f698d856 | 377 | struct ieee80211_local *local = sdata->local; |
55de908a | 378 | enum ieee80211_band band = ieee80211_get_sdata_band(sdata); |
54ab1ffb | 379 | struct ieee80211_supported_band *sband; |
f68d776a | 380 | u32 rates, basic_rates = 0, changed = 0; |
c3896d2c | 381 | |
f743ff49 | 382 | sband = local->hw.wiphy->bands[band]; |
2103dec1 | 383 | rates = ieee80211_sta_get_rates(sdata, elems, band, &basic_rates); |
d0709a65 | 384 | |
54ab1ffb | 385 | spin_lock_bh(&sta->lock); |
c3896d2c | 386 | sta->last_rx = jiffies; |
296fcba3 TP |
387 | |
388 | /* rates and capabilities don't change during peering */ | |
389 | if (sta->plink_state == NL80211_PLINK_ESTAB) | |
390 | goto out; | |
bae35d92 | 391 | |
f68d776a TP |
392 | if (sta->sta.supp_rates[band] != rates) |
393 | changed |= IEEE80211_RC_SUPP_RATES_CHANGED; | |
f743ff49 | 394 | sta->sta.supp_rates[band] = rates; |
54ab1ffb | 395 | |
52ac8c48 TP |
396 | if (ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, |
397 | elems->ht_cap_elem, sta)) | |
398 | changed |= IEEE80211_RC_BW_CHANGED; | |
4bf88530 | 399 | |
52ac8c48 TP |
400 | /* HT peer is operating 20MHz-only */ |
401 | if (elems->ht_operation && | |
402 | !(elems->ht_operation->ht_param & | |
403 | IEEE80211_HT_PARAM_CHAN_WIDTH_ANY)) { | |
404 | if (sta->sta.bandwidth != IEEE80211_STA_RX_BW_20) | |
f68d776a | 405 | changed |= IEEE80211_RC_BW_CHANGED; |
52ac8c48 | 406 | sta->sta.bandwidth = IEEE80211_STA_RX_BW_20; |
57aac7c5 | 407 | } |
c7d25828 | 408 | |
59cf1d65 HS |
409 | if (insert) |
410 | rate_control_rate_init(sta); | |
f68d776a TP |
411 | else |
412 | rate_control_rate_update(local, sband, sta, changed); | |
296fcba3 | 413 | out: |
54ab1ffb | 414 | spin_unlock_bh(&sta->lock); |
296fcba3 TP |
415 | } |
416 | ||
417 | static struct sta_info * | |
418 | __mesh_sta_info_alloc(struct ieee80211_sub_if_data *sdata, u8 *hw_addr) | |
419 | { | |
420 | struct sta_info *sta; | |
54ab1ffb | 421 | |
296fcba3 | 422 | if (sdata->local->num_sta >= MESH_MAX_PLINKS) |
e87278e7 TP |
423 | return NULL; |
424 | ||
296fcba3 TP |
425 | sta = sta_info_alloc(sdata, hw_addr, GFP_KERNEL); |
426 | if (!sta) | |
427 | return NULL; | |
428 | ||
429 | sta->plink_state = NL80211_PLINK_LISTEN; | |
296fcba3 TP |
430 | |
431 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); | |
432 | sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); | |
433 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTHORIZED); | |
434 | ||
435 | set_sta_flag(sta, WLAN_STA_WME); | |
436 | ||
437 | return sta; | |
438 | } | |
439 | ||
440 | static struct sta_info * | |
441 | mesh_sta_info_alloc(struct ieee80211_sub_if_data *sdata, u8 *addr, | |
442 | struct ieee802_11_elems *elems) | |
443 | { | |
444 | struct sta_info *sta = NULL; | |
445 | ||
a6dad6a2 TP |
446 | /* Userspace handles station allocation */ |
447 | if (sdata->u.mesh.user_mpm || | |
448 | sdata->u.mesh.security & IEEE80211_MESH_SEC_AUTHED) | |
296fcba3 TP |
449 | cfg80211_notify_new_peer_candidate(sdata->dev, addr, |
450 | elems->ie_start, | |
451 | elems->total_len, | |
452 | GFP_KERNEL); | |
453 | else | |
454 | sta = __mesh_sta_info_alloc(sdata, addr); | |
455 | ||
54ab1ffb TP |
456 | return sta; |
457 | } | |
458 | ||
296fcba3 TP |
459 | /* |
460 | * mesh_sta_info_get - return mesh sta info entry for @addr. | |
461 | * | |
462 | * @sdata: local meshif | |
463 | * @addr: peer's address | |
464 | * @elems: IEs from beacon or mesh peering frame. | |
465 | * | |
466 | * Return existing or newly allocated sta_info under RCU read lock. | |
467 | * (re)initialize with given IEs. | |
468 | */ | |
469 | static struct sta_info * | |
470 | mesh_sta_info_get(struct ieee80211_sub_if_data *sdata, | |
471 | u8 *addr, struct ieee802_11_elems *elems) __acquires(RCU) | |
472 | { | |
473 | struct sta_info *sta = NULL; | |
474 | ||
475 | rcu_read_lock(); | |
476 | sta = sta_info_get(sdata, addr); | |
477 | if (sta) { | |
478 | mesh_sta_info_init(sdata, sta, elems, false); | |
479 | } else { | |
480 | rcu_read_unlock(); | |
481 | /* can't run atomic */ | |
482 | sta = mesh_sta_info_alloc(sdata, addr, elems); | |
483 | if (!sta) { | |
484 | rcu_read_lock(); | |
485 | return NULL; | |
486 | } | |
487 | ||
3b4797bc TP |
488 | mesh_sta_info_init(sdata, sta, elems, true); |
489 | ||
296fcba3 TP |
490 | if (sta_info_insert_rcu(sta)) |
491 | return NULL; | |
492 | } | |
493 | ||
494 | return sta; | |
495 | } | |
496 | ||
497 | /* | |
498 | * mesh_neighbour_update - update or initialize new mesh neighbor. | |
499 | * | |
500 | * @sdata: local meshif | |
501 | * @addr: peer's address | |
502 | * @elems: IEs from beacon or mesh peering frame | |
503 | * | |
504 | * Initiates peering if appropriate. | |
505 | */ | |
f743ff49 TP |
506 | void mesh_neighbour_update(struct ieee80211_sub_if_data *sdata, |
507 | u8 *hw_addr, | |
54ab1ffb TP |
508 | struct ieee802_11_elems *elems) |
509 | { | |
510 | struct sta_info *sta; | |
39886b61 | 511 | u32 changed = 0; |
54ab1ffb | 512 | |
296fcba3 | 513 | sta = mesh_sta_info_get(sdata, hw_addr, elems); |
54ab1ffb TP |
514 | if (!sta) |
515 | goto out; | |
516 | ||
1570ca59 | 517 | if (mesh_peer_accepts_plinks(elems) && |
54ab1ffb TP |
518 | sta->plink_state == NL80211_PLINK_LISTEN && |
519 | sdata->u.mesh.accepting_plinks && | |
520 | sdata->u.mesh.mshcfg.auto_open_plinks && | |
521 | rssi_threshold_check(sta, sdata)) | |
39886b61 | 522 | changed = mesh_plink_open(sta); |
c3896d2c | 523 | |
3f52b7e3 | 524 | ieee80211_mps_frame_release(sta, elems); |
54ab1ffb | 525 | out: |
d0709a65 | 526 | rcu_read_unlock(); |
2b5e1967 | 527 | ieee80211_mbss_info_change_notify(sdata, changed); |
c3896d2c LCC |
528 | } |
529 | ||
530 | static void mesh_plink_timer(unsigned long data) | |
531 | { | |
532 | struct sta_info *sta; | |
533 | __le16 llid, plid, reason; | |
c3896d2c | 534 | struct ieee80211_sub_if_data *sdata; |
453e66f2 | 535 | struct mesh_config *mshcfg; |
c3896d2c | 536 | |
d0709a65 JB |
537 | /* |
538 | * This STA is valid because sta_info_destroy() will | |
539 | * del_timer_sync() this timer after having made sure | |
540 | * it cannot be readded (by deleting the plink.) | |
541 | */ | |
c3896d2c LCC |
542 | sta = (struct sta_info *) data; |
543 | ||
690205f1 | 544 | if (sta->sdata->local->quiescing) |
5bb644a0 | 545 | return; |
5bb644a0 | 546 | |
07346f81 | 547 | spin_lock_bh(&sta->lock); |
c3896d2c LCC |
548 | if (sta->ignore_plink_timer) { |
549 | sta->ignore_plink_timer = false; | |
07346f81 | 550 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
551 | return; |
552 | } | |
bdcbd8e0 | 553 | mpl_dbg(sta->sdata, |
3088f7d2 TP |
554 | "Mesh plink timer for %pM fired on state %s\n", |
555 | sta->sta.addr, mplstates[sta->plink_state]); | |
c3896d2c LCC |
556 | reason = 0; |
557 | llid = sta->llid; | |
558 | plid = sta->plid; | |
d0709a65 | 559 | sdata = sta->sdata; |
453e66f2 | 560 | mshcfg = &sdata->u.mesh.mshcfg; |
c3896d2c LCC |
561 | |
562 | switch (sta->plink_state) { | |
57cf8043 JC |
563 | case NL80211_PLINK_OPN_RCVD: |
564 | case NL80211_PLINK_OPN_SNT: | |
c3896d2c | 565 | /* retry timer */ |
453e66f2 | 566 | if (sta->plink_retries < mshcfg->dot11MeshMaxRetries) { |
c3896d2c | 567 | u32 rand; |
bdcbd8e0 JB |
568 | mpl_dbg(sta->sdata, |
569 | "Mesh plink for %pM (retry, timeout): %d %d\n", | |
0c68ae26 JB |
570 | sta->sta.addr, sta->plink_retries, |
571 | sta->plink_timeout); | |
c3896d2c LCC |
572 | get_random_bytes(&rand, sizeof(u32)); |
573 | sta->plink_timeout = sta->plink_timeout + | |
574 | rand % sta->plink_timeout; | |
575 | ++sta->plink_retries; | |
d0709a65 | 576 | mod_plink_timer(sta, sta->plink_timeout); |
07346f81 | 577 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
578 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_OPEN, |
579 | sta->sta.addr, llid, 0, 0); | |
c3896d2c LCC |
580 | break; |
581 | } | |
54ef656b | 582 | reason = cpu_to_le16(WLAN_REASON_MESH_MAX_RETRIES); |
c3896d2c | 583 | /* fall through on else */ |
57cf8043 | 584 | case NL80211_PLINK_CNF_RCVD: |
c3896d2c LCC |
585 | /* confirm timer */ |
586 | if (!reason) | |
54ef656b | 587 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIRM_TIMEOUT); |
57cf8043 | 588 | sta->plink_state = NL80211_PLINK_HOLDING; |
453e66f2 | 589 | mod_plink_timer(sta, mshcfg->dot11MeshHoldingTimeout); |
07346f81 | 590 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
591 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
592 | sta->sta.addr, llid, plid, reason); | |
c3896d2c | 593 | break; |
57cf8043 | 594 | case NL80211_PLINK_HOLDING: |
c3896d2c | 595 | /* holding timer */ |
d0709a65 | 596 | del_timer(&sta->plink_timer); |
c3896d2c | 597 | mesh_plink_fsm_restart(sta); |
07346f81 | 598 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
599 | break; |
600 | default: | |
07346f81 | 601 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
602 | break; |
603 | } | |
c3896d2c LCC |
604 | } |
605 | ||
606 | static inline void mesh_plink_timer_set(struct sta_info *sta, int timeout) | |
607 | { | |
608 | sta->plink_timer.expires = jiffies + (HZ * timeout / 1000); | |
609 | sta->plink_timer.data = (unsigned long) sta; | |
610 | sta->plink_timer.function = mesh_plink_timer; | |
611 | sta->plink_timeout = timeout; | |
c3896d2c LCC |
612 | add_timer(&sta->plink_timer); |
613 | } | |
614 | ||
39886b61 | 615 | u32 mesh_plink_open(struct sta_info *sta) |
c3896d2c LCC |
616 | { |
617 | __le16 llid; | |
d0709a65 | 618 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
39886b61 | 619 | u32 changed; |
c3896d2c | 620 | |
c2c98fde | 621 | if (!test_sta_flag(sta, WLAN_STA_AUTH)) |
39886b61 | 622 | return 0; |
53e80511 | 623 | |
07346f81 | 624 | spin_lock_bh(&sta->lock); |
c3896d2c LCC |
625 | get_random_bytes(&llid, 2); |
626 | sta->llid = llid; | |
9385d04f CYY |
627 | if (sta->plink_state != NL80211_PLINK_LISTEN && |
628 | sta->plink_state != NL80211_PLINK_BLOCKED) { | |
07346f81 | 629 | spin_unlock_bh(&sta->lock); |
39886b61 | 630 | return 0; |
c3896d2c | 631 | } |
57cf8043 | 632 | sta->plink_state = NL80211_PLINK_OPN_SNT; |
453e66f2 | 633 | mesh_plink_timer_set(sta, sdata->u.mesh.mshcfg.dot11MeshRetryTimeout); |
07346f81 | 634 | spin_unlock_bh(&sta->lock); |
bdcbd8e0 JB |
635 | mpl_dbg(sdata, |
636 | "Mesh plink: starting establishment with %pM\n", | |
0c68ae26 | 637 | sta->sta.addr); |
c3896d2c | 638 | |
3f52b7e3 | 639 | /* set the non-peer mode to active during peering */ |
39886b61 | 640 | changed = ieee80211_mps_local_status_update(sdata); |
3f52b7e3 | 641 | |
39886b61 TP |
642 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_OPEN, |
643 | sta->sta.addr, llid, 0, 0); | |
644 | return changed; | |
c3896d2c LCC |
645 | } |
646 | ||
39886b61 | 647 | u32 mesh_plink_block(struct sta_info *sta) |
c3896d2c | 648 | { |
df323818 | 649 | u32 changed; |
c9370197 | 650 | |
07346f81 | 651 | spin_lock_bh(&sta->lock); |
df323818 | 652 | changed = __mesh_plink_deactivate(sta); |
57cf8043 | 653 | sta->plink_state = NL80211_PLINK_BLOCKED; |
07346f81 | 654 | spin_unlock_bh(&sta->lock); |
c9370197 | 655 | |
39886b61 | 656 | return changed; |
c3896d2c LCC |
657 | } |
658 | ||
c3896d2c | 659 | |
bf7cd94d JB |
660 | void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, |
661 | struct ieee80211_mgmt *mgmt, size_t len, | |
662 | struct ieee80211_rx_status *rx_status) | |
c3896d2c | 663 | { |
453e66f2 | 664 | struct mesh_config *mshcfg = &sdata->u.mesh.mshcfg; |
c3896d2c LCC |
665 | struct ieee802_11_elems elems; |
666 | struct sta_info *sta; | |
667 | enum plink_event event; | |
54ef656b | 668 | enum ieee80211_self_protected_actioncode ftype; |
c3896d2c | 669 | size_t baselen; |
57aac7c5 | 670 | bool matches_local = true; |
c3896d2c LCC |
671 | u8 ie_len; |
672 | u8 *baseaddr; | |
57aac7c5 | 673 | u32 changed = 0; |
c3896d2c | 674 | __le16 plid, llid, reason; |
c3896d2c | 675 | |
9c80d3dc JB |
676 | /* need action_code, aux */ |
677 | if (len < IEEE80211_MIN_ACTION_SIZE + 3) | |
678 | return; | |
679 | ||
a6dad6a2 TP |
680 | if (sdata->u.mesh.user_mpm) |
681 | /* userspace must register for these */ | |
682 | return; | |
683 | ||
c3896d2c | 684 | if (is_multicast_ether_addr(mgmt->da)) { |
bdcbd8e0 JB |
685 | mpl_dbg(sdata, |
686 | "Mesh plink: ignore frame from multicast address\n"); | |
c3896d2c LCC |
687 | return; |
688 | } | |
689 | ||
8db09850 TP |
690 | baseaddr = mgmt->u.action.u.self_prot.variable; |
691 | baselen = (u8 *) mgmt->u.action.u.self_prot.variable - (u8 *) mgmt; | |
692 | if (mgmt->u.action.u.self_prot.action_code == | |
54ef656b | 693 | WLAN_SP_MESH_PEERING_CONFIRM) { |
c3896d2c | 694 | baseaddr += 4; |
70bdb6b2 | 695 | baselen += 4; |
c3896d2c | 696 | } |
b2e506bf | 697 | ieee802_11_parse_elems(baseaddr, len - baselen, true, &elems); |
bf7cd94d | 698 | |
8db09850 | 699 | if (!elems.peering) { |
bdcbd8e0 JB |
700 | mpl_dbg(sdata, |
701 | "Mesh plink: missing necessary peer link ie\n"); | |
c3896d2c LCC |
702 | return; |
703 | } | |
bf7cd94d | 704 | |
b130e5ce | 705 | if (elems.rsn_len && |
bf7cd94d | 706 | sdata->u.mesh.security == IEEE80211_MESH_SEC_NONE) { |
bdcbd8e0 JB |
707 | mpl_dbg(sdata, |
708 | "Mesh plink: can't establish link with secure peer\n"); | |
5cff5e01 JC |
709 | return; |
710 | } | |
c3896d2c | 711 | |
8db09850 TP |
712 | ftype = mgmt->u.action.u.self_prot.action_code; |
713 | ie_len = elems.peering_len; | |
714 | if ((ftype == WLAN_SP_MESH_PEERING_OPEN && ie_len != 4) || | |
715 | (ftype == WLAN_SP_MESH_PEERING_CONFIRM && ie_len != 6) || | |
716 | (ftype == WLAN_SP_MESH_PEERING_CLOSE && ie_len != 6 | |
717 | && ie_len != 8)) { | |
bdcbd8e0 JB |
718 | mpl_dbg(sdata, |
719 | "Mesh plink: incorrect plink ie length %d %d\n", | |
720 | ftype, ie_len); | |
c3896d2c LCC |
721 | return; |
722 | } | |
723 | ||
54ef656b | 724 | if (ftype != WLAN_SP_MESH_PEERING_CLOSE && |
bf7cd94d | 725 | (!elems.mesh_id || !elems.mesh_config)) { |
bdcbd8e0 | 726 | mpl_dbg(sdata, "Mesh plink: missing necessary ie\n"); |
c3896d2c LCC |
727 | return; |
728 | } | |
729 | /* Note the lines below are correct, the llid in the frame is the plid | |
730 | * from the point of view of this host. | |
731 | */ | |
8db09850 | 732 | memcpy(&plid, PLINK_GET_LLID(elems.peering), 2); |
54ef656b | 733 | if (ftype == WLAN_SP_MESH_PEERING_CONFIRM || |
8db09850 TP |
734 | (ftype == WLAN_SP_MESH_PEERING_CLOSE && ie_len == 8)) |
735 | memcpy(&llid, PLINK_GET_PLID(elems.peering), 2); | |
c3896d2c | 736 | |
296fcba3 | 737 | /* WARNING: Only for sta pointer, is dropped & re-acquired */ |
d0709a65 JB |
738 | rcu_read_lock(); |
739 | ||
abe60632 | 740 | sta = sta_info_get(sdata, mgmt->sa); |
54ef656b | 741 | if (!sta && ftype != WLAN_SP_MESH_PEERING_OPEN) { |
bdcbd8e0 | 742 | mpl_dbg(sdata, "Mesh plink: cls or cnf from unknown peer\n"); |
d0709a65 | 743 | rcu_read_unlock(); |
c3896d2c LCC |
744 | return; |
745 | } | |
746 | ||
55335137 | 747 | if (ftype == WLAN_SP_MESH_PEERING_OPEN && |
3d4f9699 | 748 | !rssi_threshold_check(sta, sdata)) { |
bdcbd8e0 | 749 | mpl_dbg(sdata, "Mesh plink: %pM does not meet rssi threshold\n", |
3d4f9699 | 750 | mgmt->sa); |
55335137 AN |
751 | rcu_read_unlock(); |
752 | return; | |
753 | } | |
754 | ||
c2c98fde | 755 | if (sta && !test_sta_flag(sta, WLAN_STA_AUTH)) { |
bdcbd8e0 | 756 | mpl_dbg(sdata, "Mesh plink: Action frame from non-authed peer\n"); |
53e80511 JC |
757 | rcu_read_unlock(); |
758 | return; | |
759 | } | |
760 | ||
57cf8043 | 761 | if (sta && sta->plink_state == NL80211_PLINK_BLOCKED) { |
d0709a65 | 762 | rcu_read_unlock(); |
c3896d2c LCC |
763 | return; |
764 | } | |
765 | ||
766 | /* Now we will figure out the appropriate event... */ | |
767 | event = PLINK_UNDEFINED; | |
54ef656b | 768 | if (ftype != WLAN_SP_MESH_PEERING_CLOSE && |
f743ff49 | 769 | !mesh_matches_local(sdata, &elems)) { |
d12c7452 | 770 | matches_local = false; |
c3896d2c | 771 | switch (ftype) { |
54ef656b | 772 | case WLAN_SP_MESH_PEERING_OPEN: |
c3896d2c LCC |
773 | event = OPN_RJCT; |
774 | break; | |
54ef656b | 775 | case WLAN_SP_MESH_PEERING_CONFIRM: |
c3896d2c LCC |
776 | event = CNF_RJCT; |
777 | break; | |
54ef656b | 778 | default: |
c3896d2c LCC |
779 | break; |
780 | } | |
d12c7452 CL |
781 | } |
782 | ||
783 | if (!sta && !matches_local) { | |
784 | rcu_read_unlock(); | |
54ef656b | 785 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
d12c7452 | 786 | llid = 0; |
54ef656b TP |
787 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
788 | mgmt->sa, llid, plid, reason); | |
d12c7452 | 789 | return; |
c3896d2c | 790 | } else if (!sta) { |
54ef656b | 791 | /* ftype == WLAN_SP_MESH_PEERING_OPEN */ |
c3896d2c | 792 | if (!mesh_plink_free_count(sdata)) { |
bdcbd8e0 | 793 | mpl_dbg(sdata, "Mesh plink error: no more free plinks\n"); |
73651ee6 JB |
794 | rcu_read_unlock(); |
795 | return; | |
796 | } | |
c3896d2c | 797 | event = OPN_ACPT; |
d12c7452 | 798 | } else if (matches_local) { |
c3896d2c | 799 | switch (ftype) { |
54ef656b | 800 | case WLAN_SP_MESH_PEERING_OPEN: |
c3896d2c | 801 | if (!mesh_plink_free_count(sdata) || |
d0709a65 | 802 | (sta->plid && sta->plid != plid)) |
c3896d2c LCC |
803 | event = OPN_IGNR; |
804 | else | |
805 | event = OPN_ACPT; | |
806 | break; | |
54ef656b | 807 | case WLAN_SP_MESH_PEERING_CONFIRM: |
c3896d2c | 808 | if (!mesh_plink_free_count(sdata) || |
d0709a65 | 809 | (sta->llid != llid || sta->plid != plid)) |
c3896d2c LCC |
810 | event = CNF_IGNR; |
811 | else | |
812 | event = CNF_ACPT; | |
813 | break; | |
54ef656b | 814 | case WLAN_SP_MESH_PEERING_CLOSE: |
57cf8043 | 815 | if (sta->plink_state == NL80211_PLINK_ESTAB) |
c3896d2c LCC |
816 | /* Do not check for llid or plid. This does not |
817 | * follow the standard but since multiple plinks | |
818 | * per sta are not supported, it is necessary in | |
819 | * order to avoid a livelock when MP A sees an | |
820 | * establish peer link to MP B but MP B does not | |
821 | * see it. This can be caused by a timeout in | |
822 | * B's peer link establishment or B beign | |
823 | * restarted. | |
824 | */ | |
825 | event = CLS_ACPT; | |
826 | else if (sta->plid != plid) | |
827 | event = CLS_IGNR; | |
3cde38e7 | 828 | else if (ie_len == 8 && sta->llid != llid) |
c3896d2c LCC |
829 | event = CLS_IGNR; |
830 | else | |
831 | event = CLS_ACPT; | |
832 | break; | |
833 | default: | |
bdcbd8e0 | 834 | mpl_dbg(sdata, "Mesh plink: unknown frame subtype\n"); |
d0709a65 | 835 | rcu_read_unlock(); |
c3896d2c LCC |
836 | return; |
837 | } | |
54ab1ffb TP |
838 | } |
839 | ||
840 | if (event == OPN_ACPT) { | |
296fcba3 | 841 | rcu_read_unlock(); |
54ab1ffb | 842 | /* allocate sta entry if necessary and update info */ |
296fcba3 | 843 | sta = mesh_sta_info_get(sdata, mgmt->sa, &elems); |
54ab1ffb | 844 | if (!sta) { |
bdcbd8e0 | 845 | mpl_dbg(sdata, "Mesh plink: failed to init peer!\n"); |
54ab1ffb TP |
846 | rcu_read_unlock(); |
847 | return; | |
848 | } | |
c3896d2c LCC |
849 | } |
850 | ||
95e48add TP |
851 | mpl_dbg(sdata, "peer %pM in state %s got event %s\n", mgmt->sa, |
852 | mplstates[sta->plink_state], mplevents[event]); | |
c3896d2c | 853 | reason = 0; |
54ab1ffb | 854 | spin_lock_bh(&sta->lock); |
c3896d2c LCC |
855 | switch (sta->plink_state) { |
856 | /* spin_unlock as soon as state is updated at each case */ | |
57cf8043 | 857 | case NL80211_PLINK_LISTEN: |
c3896d2c LCC |
858 | switch (event) { |
859 | case CLS_ACPT: | |
860 | mesh_plink_fsm_restart(sta); | |
07346f81 | 861 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
862 | break; |
863 | case OPN_ACPT: | |
57cf8043 | 864 | sta->plink_state = NL80211_PLINK_OPN_RCVD; |
c3896d2c LCC |
865 | sta->plid = plid; |
866 | get_random_bytes(&llid, 2); | |
867 | sta->llid = llid; | |
453e66f2 MP |
868 | mesh_plink_timer_set(sta, |
869 | mshcfg->dot11MeshRetryTimeout); | |
3f52b7e3 MP |
870 | |
871 | /* set the non-peer mode to active during peering */ | |
39886b61 | 872 | changed |= ieee80211_mps_local_status_update(sdata); |
3f52b7e3 | 873 | |
07346f81 | 874 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
875 | mesh_plink_frame_tx(sdata, |
876 | WLAN_SP_MESH_PEERING_OPEN, | |
877 | sta->sta.addr, llid, 0, 0); | |
878 | mesh_plink_frame_tx(sdata, | |
879 | WLAN_SP_MESH_PEERING_CONFIRM, | |
880 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
881 | break; |
882 | default: | |
07346f81 | 883 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
884 | break; |
885 | } | |
886 | break; | |
887 | ||
57cf8043 | 888 | case NL80211_PLINK_OPN_SNT: |
c3896d2c LCC |
889 | switch (event) { |
890 | case OPN_RJCT: | |
891 | case CNF_RJCT: | |
54ef656b | 892 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
c3896d2c LCC |
893 | case CLS_ACPT: |
894 | if (!reason) | |
54ef656b | 895 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
c3896d2c | 896 | sta->reason = reason; |
57cf8043 | 897 | sta->plink_state = NL80211_PLINK_HOLDING; |
c3896d2c | 898 | if (!mod_plink_timer(sta, |
453e66f2 | 899 | mshcfg->dot11MeshHoldingTimeout)) |
c3896d2c LCC |
900 | sta->ignore_plink_timer = true; |
901 | ||
902 | llid = sta->llid; | |
07346f81 | 903 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
904 | mesh_plink_frame_tx(sdata, |
905 | WLAN_SP_MESH_PEERING_CLOSE, | |
906 | sta->sta.addr, llid, plid, reason); | |
c3896d2c LCC |
907 | break; |
908 | case OPN_ACPT: | |
909 | /* retry timer is left untouched */ | |
57cf8043 | 910 | sta->plink_state = NL80211_PLINK_OPN_RCVD; |
c3896d2c LCC |
911 | sta->plid = plid; |
912 | llid = sta->llid; | |
07346f81 | 913 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
914 | mesh_plink_frame_tx(sdata, |
915 | WLAN_SP_MESH_PEERING_CONFIRM, | |
916 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
917 | break; |
918 | case CNF_ACPT: | |
57cf8043 | 919 | sta->plink_state = NL80211_PLINK_CNF_RCVD; |
c3896d2c | 920 | if (!mod_plink_timer(sta, |
453e66f2 | 921 | mshcfg->dot11MeshConfirmTimeout)) |
c3896d2c LCC |
922 | sta->ignore_plink_timer = true; |
923 | ||
07346f81 | 924 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
925 | break; |
926 | default: | |
07346f81 | 927 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
928 | break; |
929 | } | |
930 | break; | |
931 | ||
57cf8043 | 932 | case NL80211_PLINK_OPN_RCVD: |
c3896d2c LCC |
933 | switch (event) { |
934 | case OPN_RJCT: | |
935 | case CNF_RJCT: | |
54ef656b | 936 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
c3896d2c LCC |
937 | case CLS_ACPT: |
938 | if (!reason) | |
54ef656b | 939 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
c3896d2c | 940 | sta->reason = reason; |
57cf8043 | 941 | sta->plink_state = NL80211_PLINK_HOLDING; |
c3896d2c | 942 | if (!mod_plink_timer(sta, |
453e66f2 | 943 | mshcfg->dot11MeshHoldingTimeout)) |
c3896d2c LCC |
944 | sta->ignore_plink_timer = true; |
945 | ||
946 | llid = sta->llid; | |
07346f81 | 947 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
948 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
949 | sta->sta.addr, llid, plid, reason); | |
c3896d2c LCC |
950 | break; |
951 | case OPN_ACPT: | |
952 | llid = sta->llid; | |
07346f81 | 953 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
954 | mesh_plink_frame_tx(sdata, |
955 | WLAN_SP_MESH_PEERING_CONFIRM, | |
956 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
957 | break; |
958 | case CNF_ACPT: | |
d0709a65 | 959 | del_timer(&sta->plink_timer); |
57cf8043 | 960 | sta->plink_state = NL80211_PLINK_ESTAB; |
07346f81 | 961 | spin_unlock_bh(&sta->lock); |
df323818 | 962 | changed |= mesh_plink_inc_estab_count(sdata); |
57aac7c5 | 963 | changed |= mesh_set_ht_prot_mode(sdata); |
3b144658 | 964 | changed |= mesh_set_short_slot_time(sdata); |
bdcbd8e0 | 965 | mpl_dbg(sdata, "Mesh plink with %pM ESTABLISHED\n", |
0c68ae26 | 966 | sta->sta.addr); |
3f52b7e3 | 967 | ieee80211_mps_sta_status_update(sta); |
39886b61 | 968 | changed |= ieee80211_mps_set_sta_local_pm(sta, |
3f52b7e3 | 969 | mshcfg->power_mode); |
c3896d2c LCC |
970 | break; |
971 | default: | |
07346f81 | 972 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
973 | break; |
974 | } | |
975 | break; | |
976 | ||
57cf8043 | 977 | case NL80211_PLINK_CNF_RCVD: |
c3896d2c LCC |
978 | switch (event) { |
979 | case OPN_RJCT: | |
980 | case CNF_RJCT: | |
54ef656b | 981 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
c3896d2c LCC |
982 | case CLS_ACPT: |
983 | if (!reason) | |
54ef656b | 984 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
c3896d2c | 985 | sta->reason = reason; |
57cf8043 | 986 | sta->plink_state = NL80211_PLINK_HOLDING; |
c3896d2c | 987 | if (!mod_plink_timer(sta, |
453e66f2 | 988 | mshcfg->dot11MeshHoldingTimeout)) |
c3896d2c LCC |
989 | sta->ignore_plink_timer = true; |
990 | ||
991 | llid = sta->llid; | |
07346f81 | 992 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
993 | mesh_plink_frame_tx(sdata, |
994 | WLAN_SP_MESH_PEERING_CLOSE, | |
995 | sta->sta.addr, llid, plid, reason); | |
ff59dc76 | 996 | break; |
c3896d2c | 997 | case OPN_ACPT: |
d0709a65 | 998 | del_timer(&sta->plink_timer); |
57cf8043 | 999 | sta->plink_state = NL80211_PLINK_ESTAB; |
07346f81 | 1000 | spin_unlock_bh(&sta->lock); |
df323818 | 1001 | changed |= mesh_plink_inc_estab_count(sdata); |
57aac7c5 | 1002 | changed |= mesh_set_ht_prot_mode(sdata); |
3b144658 | 1003 | changed |= mesh_set_short_slot_time(sdata); |
bdcbd8e0 | 1004 | mpl_dbg(sdata, "Mesh plink with %pM ESTABLISHED\n", |
0c68ae26 | 1005 | sta->sta.addr); |
54ef656b TP |
1006 | mesh_plink_frame_tx(sdata, |
1007 | WLAN_SP_MESH_PEERING_CONFIRM, | |
1008 | sta->sta.addr, llid, plid, 0); | |
3f52b7e3 | 1009 | ieee80211_mps_sta_status_update(sta); |
39886b61 TP |
1010 | changed |= ieee80211_mps_set_sta_local_pm(sta, |
1011 | mshcfg->power_mode); | |
c3896d2c LCC |
1012 | break; |
1013 | default: | |
07346f81 | 1014 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
1015 | break; |
1016 | } | |
1017 | break; | |
1018 | ||
57cf8043 | 1019 | case NL80211_PLINK_ESTAB: |
c3896d2c LCC |
1020 | switch (event) { |
1021 | case CLS_ACPT: | |
54ef656b | 1022 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
c3896d2c | 1023 | sta->reason = reason; |
df323818 | 1024 | changed |= __mesh_plink_deactivate(sta); |
57cf8043 | 1025 | sta->plink_state = NL80211_PLINK_HOLDING; |
c3896d2c | 1026 | llid = sta->llid; |
453e66f2 | 1027 | mod_plink_timer(sta, mshcfg->dot11MeshHoldingTimeout); |
07346f81 | 1028 | spin_unlock_bh(&sta->lock); |
57aac7c5 | 1029 | changed |= mesh_set_ht_prot_mode(sdata); |
3b144658 | 1030 | changed |= mesh_set_short_slot_time(sdata); |
54ef656b TP |
1031 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
1032 | sta->sta.addr, llid, plid, reason); | |
c3896d2c LCC |
1033 | break; |
1034 | case OPN_ACPT: | |
1035 | llid = sta->llid; | |
07346f81 | 1036 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
1037 | mesh_plink_frame_tx(sdata, |
1038 | WLAN_SP_MESH_PEERING_CONFIRM, | |
1039 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
1040 | break; |
1041 | default: | |
07346f81 | 1042 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
1043 | break; |
1044 | } | |
1045 | break; | |
57cf8043 | 1046 | case NL80211_PLINK_HOLDING: |
c3896d2c LCC |
1047 | switch (event) { |
1048 | case CLS_ACPT: | |
d0709a65 | 1049 | if (del_timer(&sta->plink_timer)) |
c3896d2c | 1050 | sta->ignore_plink_timer = 1; |
c3896d2c | 1051 | mesh_plink_fsm_restart(sta); |
07346f81 | 1052 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
1053 | break; |
1054 | case OPN_ACPT: | |
1055 | case CNF_ACPT: | |
1056 | case OPN_RJCT: | |
1057 | case CNF_RJCT: | |
1058 | llid = sta->llid; | |
1059 | reason = sta->reason; | |
07346f81 | 1060 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
1061 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
1062 | sta->sta.addr, llid, plid, reason); | |
c3896d2c LCC |
1063 | break; |
1064 | default: | |
07346f81 | 1065 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
1066 | } |
1067 | break; | |
1068 | default: | |
b4e08ea1 | 1069 | /* should not get here, PLINK_BLOCKED is dealt with at the |
3ad2f3fb | 1070 | * beginning of the function |
c3896d2c | 1071 | */ |
07346f81 | 1072 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
1073 | break; |
1074 | } | |
d0709a65 JB |
1075 | |
1076 | rcu_read_unlock(); | |
57aac7c5 | 1077 | |
ecccd072 | 1078 | if (changed) |
2b5e1967 | 1079 | ieee80211_mbss_info_change_notify(sdata, changed); |
c3896d2c | 1080 | } |