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); |
39886b61 | 225 | changed |= ieee80211_mps_local_status_update(sdata); |
3f52b7e3 | 226 | |
df323818 | 227 | return changed; |
c3896d2c LCC |
228 | } |
229 | ||
902acc78 | 230 | /** |
c9370197 | 231 | * mesh_plink_deactivate - deactivate mesh peer link |
902acc78 JB |
232 | * |
233 | * @sta: mesh peer link to deactivate | |
234 | * | |
235 | * All mesh paths with this peer as next hop will be flushed | |
236 | */ | |
45b5028e | 237 | u32 mesh_plink_deactivate(struct sta_info *sta) |
902acc78 | 238 | { |
c9370197 | 239 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
df323818 | 240 | u32 changed; |
c9370197 | 241 | |
07346f81 | 242 | spin_lock_bh(&sta->lock); |
df323818 | 243 | changed = __mesh_plink_deactivate(sta); |
ba4a14e1 TP |
244 | sta->reason = cpu_to_le16(WLAN_REASON_MESH_PEER_CANCELED); |
245 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, | |
246 | sta->sta.addr, sta->llid, sta->plid, | |
247 | sta->reason); | |
07346f81 | 248 | spin_unlock_bh(&sta->lock); |
c9370197 | 249 | |
45b5028e | 250 | return changed; |
902acc78 JB |
251 | } |
252 | ||
f698d856 | 253 | static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata, |
bf7cd94d JB |
254 | enum ieee80211_self_protected_actioncode action, |
255 | u8 *da, __le16 llid, __le16 plid, __le16 reason) | |
256 | { | |
f698d856 | 257 | struct ieee80211_local *local = sdata->local; |
3b69a9c5 | 258 | struct sk_buff *skb; |
e7570dfb | 259 | struct ieee80211_tx_info *info; |
c3896d2c LCC |
260 | struct ieee80211_mgmt *mgmt; |
261 | bool include_plid = false; | |
8db09850 | 262 | u16 peering_proto = 0; |
3b69a9c5 TP |
263 | u8 *pos, ie_len = 4; |
264 | int hdr_len = offsetof(struct ieee80211_mgmt, u.action.u.self_prot) + | |
265 | sizeof(mgmt->u.action.u.self_prot); | |
f609a43d | 266 | int err = -ENOMEM; |
3b69a9c5 | 267 | |
65e8b0cc | 268 | skb = dev_alloc_skb(local->tx_headroom + |
3b69a9c5 TP |
269 | hdr_len + |
270 | 2 + /* capability info */ | |
271 | 2 + /* AID */ | |
272 | 2 + 8 + /* supported rates */ | |
273 | 2 + (IEEE80211_MAX_SUPP_RATES - 8) + | |
274 | 2 + sdata->u.mesh.mesh_id_len + | |
275 | 2 + sizeof(struct ieee80211_meshconf_ie) + | |
176f3608 | 276 | 2 + sizeof(struct ieee80211_ht_cap) + |
074d46d1 | 277 | 2 + sizeof(struct ieee80211_ht_operation) + |
3b69a9c5 TP |
278 | 2 + 8 + /* peering IE */ |
279 | sdata->u.mesh.ie_len); | |
c3896d2c LCC |
280 | if (!skb) |
281 | return -1; | |
e7570dfb | 282 | info = IEEE80211_SKB_CB(skb); |
65e8b0cc | 283 | skb_reserve(skb, local->tx_headroom); |
3b69a9c5 TP |
284 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, hdr_len); |
285 | memset(mgmt, 0, hdr_len); | |
e7827a70 HH |
286 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
287 | IEEE80211_STYPE_ACTION); | |
c3896d2c | 288 | memcpy(mgmt->da, da, ETH_ALEN); |
47846c9b | 289 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); |
915b5c50 | 290 | memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN); |
8db09850 TP |
291 | mgmt->u.action.category = WLAN_CATEGORY_SELF_PROTECTED; |
292 | mgmt->u.action.u.self_prot.action_code = action; | |
c3896d2c | 293 | |
8db09850 | 294 | if (action != WLAN_SP_MESH_PEERING_CLOSE) { |
55de908a JB |
295 | enum ieee80211_band band = ieee80211_get_sdata_band(sdata); |
296 | ||
8db09850 TP |
297 | /* capability info */ |
298 | pos = skb_put(skb, 2); | |
299 | memset(pos, 0, 2); | |
54ef656b | 300 | if (action == WLAN_SP_MESH_PEERING_CONFIRM) { |
8db09850 TP |
301 | /* AID */ |
302 | pos = skb_put(skb, 2); | |
77fa76bb | 303 | memcpy(pos + 2, &plid, 2); |
c3896d2c | 304 | } |
55de908a JB |
305 | if (ieee80211_add_srates_ie(sdata, skb, true, band) || |
306 | ieee80211_add_ext_srates_ie(sdata, skb, true, band) || | |
bf7cd94d JB |
307 | mesh_add_rsn_ie(sdata, skb) || |
308 | mesh_add_meshid_ie(sdata, skb) || | |
309 | mesh_add_meshconf_ie(sdata, skb)) | |
f609a43d | 310 | goto free; |
8db09850 | 311 | } else { /* WLAN_SP_MESH_PEERING_CLOSE */ |
e7570dfb | 312 | info->flags |= IEEE80211_TX_CTL_NO_ACK; |
bf7cd94d | 313 | if (mesh_add_meshid_ie(sdata, skb)) |
f609a43d | 314 | goto free; |
c3896d2c LCC |
315 | } |
316 | ||
8db09850 | 317 | /* Add Mesh Peering Management element */ |
c3896d2c | 318 | switch (action) { |
54ef656b | 319 | case WLAN_SP_MESH_PEERING_OPEN: |
c3896d2c | 320 | break; |
54ef656b | 321 | case WLAN_SP_MESH_PEERING_CONFIRM: |
8db09850 | 322 | ie_len += 2; |
c3896d2c LCC |
323 | include_plid = true; |
324 | break; | |
54ef656b | 325 | case WLAN_SP_MESH_PEERING_CLOSE: |
8db09850 TP |
326 | if (plid) { |
327 | ie_len += 2; | |
c3896d2c LCC |
328 | include_plid = true; |
329 | } | |
8db09850 | 330 | ie_len += 2; /* reason code */ |
c3896d2c | 331 | break; |
8db09850 | 332 | default: |
f609a43d TP |
333 | err = -EINVAL; |
334 | goto free; | |
c3896d2c LCC |
335 | } |
336 | ||
8db09850 | 337 | if (WARN_ON(skb_tailroom(skb) < 2 + ie_len)) |
f609a43d | 338 | goto free; |
8db09850 | 339 | |
c3896d2c | 340 | pos = skb_put(skb, 2 + ie_len); |
8db09850 | 341 | *pos++ = WLAN_EID_PEER_MGMT; |
c3896d2c | 342 | *pos++ = ie_len; |
8db09850 TP |
343 | memcpy(pos, &peering_proto, 2); |
344 | pos += 2; | |
c3896d2c | 345 | memcpy(pos, &llid, 2); |
8db09850 | 346 | pos += 2; |
c3896d2c | 347 | if (include_plid) { |
c3896d2c | 348 | memcpy(pos, &plid, 2); |
8db09850 | 349 | pos += 2; |
c3896d2c | 350 | } |
54ef656b | 351 | if (action == WLAN_SP_MESH_PEERING_CLOSE) { |
c3896d2c | 352 | memcpy(pos, &reason, 2); |
8db09850 | 353 | pos += 2; |
c3896d2c | 354 | } |
176f3608 TP |
355 | |
356 | if (action != WLAN_SP_MESH_PEERING_CLOSE) { | |
bf7cd94d JB |
357 | if (mesh_add_ht_cap_ie(sdata, skb) || |
358 | mesh_add_ht_oper_ie(sdata, skb)) | |
f609a43d | 359 | goto free; |
176f3608 TP |
360 | } |
361 | ||
bf7cd94d | 362 | if (mesh_add_vendor_ies(sdata, skb)) |
f609a43d | 363 | goto free; |
c3896d2c | 364 | |
62ae67be | 365 | ieee80211_tx_skb(sdata, skb); |
c3896d2c | 366 | return 0; |
f609a43d TP |
367 | free: |
368 | kfree_skb(skb); | |
369 | return err; | |
c3896d2c LCC |
370 | } |
371 | ||
296fcba3 TP |
372 | static void mesh_sta_info_init(struct ieee80211_sub_if_data *sdata, |
373 | struct sta_info *sta, | |
374 | struct ieee802_11_elems *elems, bool insert) | |
c3896d2c | 375 | { |
f698d856 | 376 | struct ieee80211_local *local = sdata->local; |
55de908a | 377 | enum ieee80211_band band = ieee80211_get_sdata_band(sdata); |
54ab1ffb | 378 | struct ieee80211_supported_band *sband; |
f68d776a | 379 | u32 rates, basic_rates = 0, changed = 0; |
c3896d2c | 380 | |
f743ff49 TP |
381 | sband = local->hw.wiphy->bands[band]; |
382 | rates = ieee80211_sta_get_rates(local, elems, band, &basic_rates); | |
d0709a65 | 383 | |
54ab1ffb | 384 | spin_lock_bh(&sta->lock); |
c3896d2c | 385 | sta->last_rx = jiffies; |
296fcba3 TP |
386 | |
387 | /* rates and capabilities don't change during peering */ | |
388 | if (sta->plink_state == NL80211_PLINK_ESTAB) | |
389 | goto out; | |
bae35d92 | 390 | |
f68d776a TP |
391 | if (sta->sta.supp_rates[band] != rates) |
392 | changed |= IEEE80211_RC_SUPP_RATES_CHANGED; | |
f743ff49 | 393 | sta->sta.supp_rates[band] = rates; |
54ab1ffb | 394 | |
52ac8c48 TP |
395 | if (ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, |
396 | elems->ht_cap_elem, sta)) | |
397 | changed |= IEEE80211_RC_BW_CHANGED; | |
4bf88530 | 398 | |
52ac8c48 TP |
399 | /* HT peer is operating 20MHz-only */ |
400 | if (elems->ht_operation && | |
401 | !(elems->ht_operation->ht_param & | |
402 | IEEE80211_HT_PARAM_CHAN_WIDTH_ANY)) { | |
403 | if (sta->sta.bandwidth != IEEE80211_STA_RX_BW_20) | |
f68d776a | 404 | changed |= IEEE80211_RC_BW_CHANGED; |
52ac8c48 | 405 | sta->sta.bandwidth = IEEE80211_STA_RX_BW_20; |
57aac7c5 | 406 | } |
c7d25828 | 407 | |
59cf1d65 HS |
408 | if (insert) |
409 | rate_control_rate_init(sta); | |
f68d776a TP |
410 | else |
411 | rate_control_rate_update(local, sband, sta, changed); | |
296fcba3 | 412 | out: |
54ab1ffb | 413 | spin_unlock_bh(&sta->lock); |
296fcba3 TP |
414 | } |
415 | ||
416 | static struct sta_info * | |
417 | __mesh_sta_info_alloc(struct ieee80211_sub_if_data *sdata, u8 *hw_addr) | |
418 | { | |
419 | struct sta_info *sta; | |
54ab1ffb | 420 | |
296fcba3 | 421 | if (sdata->local->num_sta >= MESH_MAX_PLINKS) |
e87278e7 TP |
422 | return NULL; |
423 | ||
296fcba3 TP |
424 | sta = sta_info_alloc(sdata, hw_addr, GFP_KERNEL); |
425 | if (!sta) | |
426 | return NULL; | |
427 | ||
428 | sta->plink_state = NL80211_PLINK_LISTEN; | |
296fcba3 TP |
429 | |
430 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); | |
431 | sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); | |
432 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTHORIZED); | |
433 | ||
434 | set_sta_flag(sta, WLAN_STA_WME); | |
435 | ||
436 | return sta; | |
437 | } | |
438 | ||
439 | static struct sta_info * | |
440 | mesh_sta_info_alloc(struct ieee80211_sub_if_data *sdata, u8 *addr, | |
441 | struct ieee802_11_elems *elems) | |
442 | { | |
443 | struct sta_info *sta = NULL; | |
444 | ||
a6dad6a2 TP |
445 | /* Userspace handles station allocation */ |
446 | if (sdata->u.mesh.user_mpm || | |
447 | sdata->u.mesh.security & IEEE80211_MESH_SEC_AUTHED) | |
296fcba3 TP |
448 | cfg80211_notify_new_peer_candidate(sdata->dev, addr, |
449 | elems->ie_start, | |
450 | elems->total_len, | |
451 | GFP_KERNEL); | |
452 | else | |
453 | sta = __mesh_sta_info_alloc(sdata, addr); | |
454 | ||
54ab1ffb TP |
455 | return sta; |
456 | } | |
457 | ||
296fcba3 TP |
458 | /* |
459 | * mesh_sta_info_get - return mesh sta info entry for @addr. | |
460 | * | |
461 | * @sdata: local meshif | |
462 | * @addr: peer's address | |
463 | * @elems: IEs from beacon or mesh peering frame. | |
464 | * | |
465 | * Return existing or newly allocated sta_info under RCU read lock. | |
466 | * (re)initialize with given IEs. | |
467 | */ | |
468 | static struct sta_info * | |
469 | mesh_sta_info_get(struct ieee80211_sub_if_data *sdata, | |
470 | u8 *addr, struct ieee802_11_elems *elems) __acquires(RCU) | |
471 | { | |
472 | struct sta_info *sta = NULL; | |
473 | ||
474 | rcu_read_lock(); | |
475 | sta = sta_info_get(sdata, addr); | |
476 | if (sta) { | |
477 | mesh_sta_info_init(sdata, sta, elems, false); | |
478 | } else { | |
479 | rcu_read_unlock(); | |
480 | /* can't run atomic */ | |
481 | sta = mesh_sta_info_alloc(sdata, addr, elems); | |
482 | if (!sta) { | |
483 | rcu_read_lock(); | |
484 | return NULL; | |
485 | } | |
486 | ||
3b4797bc TP |
487 | mesh_sta_info_init(sdata, sta, elems, true); |
488 | ||
296fcba3 TP |
489 | if (sta_info_insert_rcu(sta)) |
490 | return NULL; | |
491 | } | |
492 | ||
493 | return sta; | |
494 | } | |
495 | ||
496 | /* | |
497 | * mesh_neighbour_update - update or initialize new mesh neighbor. | |
498 | * | |
499 | * @sdata: local meshif | |
500 | * @addr: peer's address | |
501 | * @elems: IEs from beacon or mesh peering frame | |
502 | * | |
503 | * Initiates peering if appropriate. | |
504 | */ | |
f743ff49 TP |
505 | void mesh_neighbour_update(struct ieee80211_sub_if_data *sdata, |
506 | u8 *hw_addr, | |
54ab1ffb TP |
507 | struct ieee802_11_elems *elems) |
508 | { | |
509 | struct sta_info *sta; | |
39886b61 | 510 | u32 changed = 0; |
54ab1ffb | 511 | |
296fcba3 | 512 | sta = mesh_sta_info_get(sdata, hw_addr, elems); |
54ab1ffb TP |
513 | if (!sta) |
514 | goto out; | |
515 | ||
1570ca59 | 516 | if (mesh_peer_accepts_plinks(elems) && |
54ab1ffb TP |
517 | sta->plink_state == NL80211_PLINK_LISTEN && |
518 | sdata->u.mesh.accepting_plinks && | |
519 | sdata->u.mesh.mshcfg.auto_open_plinks && | |
520 | rssi_threshold_check(sta, sdata)) | |
39886b61 | 521 | changed = mesh_plink_open(sta); |
c3896d2c | 522 | |
3f52b7e3 | 523 | ieee80211_mps_frame_release(sta, elems); |
54ab1ffb | 524 | out: |
d0709a65 | 525 | rcu_read_unlock(); |
2b5e1967 | 526 | ieee80211_mbss_info_change_notify(sdata, changed); |
c3896d2c LCC |
527 | } |
528 | ||
529 | static void mesh_plink_timer(unsigned long data) | |
530 | { | |
531 | struct sta_info *sta; | |
532 | __le16 llid, plid, reason; | |
c3896d2c | 533 | struct ieee80211_sub_if_data *sdata; |
453e66f2 | 534 | struct mesh_config *mshcfg; |
c3896d2c | 535 | |
d0709a65 JB |
536 | /* |
537 | * This STA is valid because sta_info_destroy() will | |
538 | * del_timer_sync() this timer after having made sure | |
539 | * it cannot be readded (by deleting the plink.) | |
540 | */ | |
c3896d2c LCC |
541 | sta = (struct sta_info *) data; |
542 | ||
690205f1 | 543 | if (sta->sdata->local->quiescing) |
5bb644a0 | 544 | return; |
5bb644a0 | 545 | |
07346f81 | 546 | spin_lock_bh(&sta->lock); |
c3896d2c LCC |
547 | if (sta->ignore_plink_timer) { |
548 | sta->ignore_plink_timer = false; | |
07346f81 | 549 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
550 | return; |
551 | } | |
bdcbd8e0 | 552 | mpl_dbg(sta->sdata, |
3088f7d2 TP |
553 | "Mesh plink timer for %pM fired on state %s\n", |
554 | sta->sta.addr, mplstates[sta->plink_state]); | |
c3896d2c LCC |
555 | reason = 0; |
556 | llid = sta->llid; | |
557 | plid = sta->plid; | |
d0709a65 | 558 | sdata = sta->sdata; |
453e66f2 | 559 | mshcfg = &sdata->u.mesh.mshcfg; |
c3896d2c LCC |
560 | |
561 | switch (sta->plink_state) { | |
57cf8043 JC |
562 | case NL80211_PLINK_OPN_RCVD: |
563 | case NL80211_PLINK_OPN_SNT: | |
c3896d2c | 564 | /* retry timer */ |
453e66f2 | 565 | if (sta->plink_retries < mshcfg->dot11MeshMaxRetries) { |
c3896d2c | 566 | u32 rand; |
bdcbd8e0 JB |
567 | mpl_dbg(sta->sdata, |
568 | "Mesh plink for %pM (retry, timeout): %d %d\n", | |
0c68ae26 JB |
569 | sta->sta.addr, sta->plink_retries, |
570 | sta->plink_timeout); | |
c3896d2c LCC |
571 | get_random_bytes(&rand, sizeof(u32)); |
572 | sta->plink_timeout = sta->plink_timeout + | |
573 | rand % sta->plink_timeout; | |
574 | ++sta->plink_retries; | |
d0709a65 | 575 | mod_plink_timer(sta, sta->plink_timeout); |
07346f81 | 576 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
577 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_OPEN, |
578 | sta->sta.addr, llid, 0, 0); | |
c3896d2c LCC |
579 | break; |
580 | } | |
54ef656b | 581 | reason = cpu_to_le16(WLAN_REASON_MESH_MAX_RETRIES); |
c3896d2c | 582 | /* fall through on else */ |
57cf8043 | 583 | case NL80211_PLINK_CNF_RCVD: |
c3896d2c LCC |
584 | /* confirm timer */ |
585 | if (!reason) | |
54ef656b | 586 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIRM_TIMEOUT); |
57cf8043 | 587 | sta->plink_state = NL80211_PLINK_HOLDING; |
453e66f2 | 588 | mod_plink_timer(sta, mshcfg->dot11MeshHoldingTimeout); |
07346f81 | 589 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
590 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
591 | sta->sta.addr, llid, plid, reason); | |
c3896d2c | 592 | break; |
57cf8043 | 593 | case NL80211_PLINK_HOLDING: |
c3896d2c | 594 | /* holding timer */ |
d0709a65 | 595 | del_timer(&sta->plink_timer); |
c3896d2c | 596 | mesh_plink_fsm_restart(sta); |
07346f81 | 597 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
598 | break; |
599 | default: | |
07346f81 | 600 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
601 | break; |
602 | } | |
c3896d2c LCC |
603 | } |
604 | ||
605 | static inline void mesh_plink_timer_set(struct sta_info *sta, int timeout) | |
606 | { | |
607 | sta->plink_timer.expires = jiffies + (HZ * timeout / 1000); | |
608 | sta->plink_timer.data = (unsigned long) sta; | |
609 | sta->plink_timer.function = mesh_plink_timer; | |
610 | sta->plink_timeout = timeout; | |
c3896d2c LCC |
611 | add_timer(&sta->plink_timer); |
612 | } | |
613 | ||
39886b61 | 614 | u32 mesh_plink_open(struct sta_info *sta) |
c3896d2c LCC |
615 | { |
616 | __le16 llid; | |
d0709a65 | 617 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
39886b61 | 618 | u32 changed; |
c3896d2c | 619 | |
c2c98fde | 620 | if (!test_sta_flag(sta, WLAN_STA_AUTH)) |
39886b61 | 621 | return 0; |
53e80511 | 622 | |
07346f81 | 623 | spin_lock_bh(&sta->lock); |
c3896d2c LCC |
624 | get_random_bytes(&llid, 2); |
625 | sta->llid = llid; | |
9385d04f CYY |
626 | if (sta->plink_state != NL80211_PLINK_LISTEN && |
627 | sta->plink_state != NL80211_PLINK_BLOCKED) { | |
07346f81 | 628 | spin_unlock_bh(&sta->lock); |
39886b61 | 629 | return 0; |
c3896d2c | 630 | } |
57cf8043 | 631 | sta->plink_state = NL80211_PLINK_OPN_SNT; |
453e66f2 | 632 | mesh_plink_timer_set(sta, sdata->u.mesh.mshcfg.dot11MeshRetryTimeout); |
07346f81 | 633 | spin_unlock_bh(&sta->lock); |
bdcbd8e0 JB |
634 | mpl_dbg(sdata, |
635 | "Mesh plink: starting establishment with %pM\n", | |
0c68ae26 | 636 | sta->sta.addr); |
c3896d2c | 637 | |
3f52b7e3 | 638 | /* set the non-peer mode to active during peering */ |
39886b61 | 639 | changed = ieee80211_mps_local_status_update(sdata); |
3f52b7e3 | 640 | |
39886b61 TP |
641 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_OPEN, |
642 | sta->sta.addr, llid, 0, 0); | |
643 | return changed; | |
c3896d2c LCC |
644 | } |
645 | ||
39886b61 | 646 | u32 mesh_plink_block(struct sta_info *sta) |
c3896d2c | 647 | { |
df323818 | 648 | u32 changed; |
c9370197 | 649 | |
07346f81 | 650 | spin_lock_bh(&sta->lock); |
df323818 | 651 | changed = __mesh_plink_deactivate(sta); |
57cf8043 | 652 | sta->plink_state = NL80211_PLINK_BLOCKED; |
07346f81 | 653 | spin_unlock_bh(&sta->lock); |
c9370197 | 654 | |
39886b61 | 655 | return changed; |
c3896d2c LCC |
656 | } |
657 | ||
c3896d2c | 658 | |
bf7cd94d JB |
659 | void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, |
660 | struct ieee80211_mgmt *mgmt, size_t len, | |
661 | struct ieee80211_rx_status *rx_status) | |
c3896d2c | 662 | { |
453e66f2 | 663 | struct mesh_config *mshcfg = &sdata->u.mesh.mshcfg; |
c3896d2c LCC |
664 | struct ieee802_11_elems elems; |
665 | struct sta_info *sta; | |
666 | enum plink_event event; | |
54ef656b | 667 | enum ieee80211_self_protected_actioncode ftype; |
c3896d2c | 668 | size_t baselen; |
57aac7c5 | 669 | bool matches_local = true; |
c3896d2c LCC |
670 | u8 ie_len; |
671 | u8 *baseaddr; | |
57aac7c5 | 672 | u32 changed = 0; |
c3896d2c | 673 | __le16 plid, llid, reason; |
c3896d2c | 674 | |
9c80d3dc JB |
675 | /* need action_code, aux */ |
676 | if (len < IEEE80211_MIN_ACTION_SIZE + 3) | |
677 | return; | |
678 | ||
a6dad6a2 TP |
679 | if (sdata->u.mesh.user_mpm) |
680 | /* userspace must register for these */ | |
681 | return; | |
682 | ||
c3896d2c | 683 | if (is_multicast_ether_addr(mgmt->da)) { |
bdcbd8e0 JB |
684 | mpl_dbg(sdata, |
685 | "Mesh plink: ignore frame from multicast address\n"); | |
c3896d2c LCC |
686 | return; |
687 | } | |
688 | ||
8db09850 TP |
689 | baseaddr = mgmt->u.action.u.self_prot.variable; |
690 | baselen = (u8 *) mgmt->u.action.u.self_prot.variable - (u8 *) mgmt; | |
691 | if (mgmt->u.action.u.self_prot.action_code == | |
54ef656b | 692 | WLAN_SP_MESH_PEERING_CONFIRM) { |
c3896d2c | 693 | baseaddr += 4; |
70bdb6b2 | 694 | baselen += 4; |
c3896d2c | 695 | } |
b2e506bf | 696 | ieee802_11_parse_elems(baseaddr, len - baselen, true, &elems); |
bf7cd94d | 697 | |
8db09850 | 698 | if (!elems.peering) { |
bdcbd8e0 JB |
699 | mpl_dbg(sdata, |
700 | "Mesh plink: missing necessary peer link ie\n"); | |
c3896d2c LCC |
701 | return; |
702 | } | |
bf7cd94d | 703 | |
b130e5ce | 704 | if (elems.rsn_len && |
bf7cd94d | 705 | sdata->u.mesh.security == IEEE80211_MESH_SEC_NONE) { |
bdcbd8e0 JB |
706 | mpl_dbg(sdata, |
707 | "Mesh plink: can't establish link with secure peer\n"); | |
5cff5e01 JC |
708 | return; |
709 | } | |
c3896d2c | 710 | |
8db09850 TP |
711 | ftype = mgmt->u.action.u.self_prot.action_code; |
712 | ie_len = elems.peering_len; | |
713 | if ((ftype == WLAN_SP_MESH_PEERING_OPEN && ie_len != 4) || | |
714 | (ftype == WLAN_SP_MESH_PEERING_CONFIRM && ie_len != 6) || | |
715 | (ftype == WLAN_SP_MESH_PEERING_CLOSE && ie_len != 6 | |
716 | && ie_len != 8)) { | |
bdcbd8e0 JB |
717 | mpl_dbg(sdata, |
718 | "Mesh plink: incorrect plink ie length %d %d\n", | |
719 | ftype, ie_len); | |
c3896d2c LCC |
720 | return; |
721 | } | |
722 | ||
54ef656b | 723 | if (ftype != WLAN_SP_MESH_PEERING_CLOSE && |
bf7cd94d | 724 | (!elems.mesh_id || !elems.mesh_config)) { |
bdcbd8e0 | 725 | mpl_dbg(sdata, "Mesh plink: missing necessary ie\n"); |
c3896d2c LCC |
726 | return; |
727 | } | |
728 | /* Note the lines below are correct, the llid in the frame is the plid | |
729 | * from the point of view of this host. | |
730 | */ | |
8db09850 | 731 | memcpy(&plid, PLINK_GET_LLID(elems.peering), 2); |
54ef656b | 732 | if (ftype == WLAN_SP_MESH_PEERING_CONFIRM || |
8db09850 TP |
733 | (ftype == WLAN_SP_MESH_PEERING_CLOSE && ie_len == 8)) |
734 | memcpy(&llid, PLINK_GET_PLID(elems.peering), 2); | |
c3896d2c | 735 | |
296fcba3 | 736 | /* WARNING: Only for sta pointer, is dropped & re-acquired */ |
d0709a65 JB |
737 | rcu_read_lock(); |
738 | ||
abe60632 | 739 | sta = sta_info_get(sdata, mgmt->sa); |
54ef656b | 740 | if (!sta && ftype != WLAN_SP_MESH_PEERING_OPEN) { |
bdcbd8e0 | 741 | mpl_dbg(sdata, "Mesh plink: cls or cnf from unknown peer\n"); |
d0709a65 | 742 | rcu_read_unlock(); |
c3896d2c LCC |
743 | return; |
744 | } | |
745 | ||
55335137 | 746 | if (ftype == WLAN_SP_MESH_PEERING_OPEN && |
3d4f9699 | 747 | !rssi_threshold_check(sta, sdata)) { |
bdcbd8e0 | 748 | mpl_dbg(sdata, "Mesh plink: %pM does not meet rssi threshold\n", |
3d4f9699 | 749 | mgmt->sa); |
55335137 AN |
750 | rcu_read_unlock(); |
751 | return; | |
752 | } | |
753 | ||
c2c98fde | 754 | if (sta && !test_sta_flag(sta, WLAN_STA_AUTH)) { |
bdcbd8e0 | 755 | mpl_dbg(sdata, "Mesh plink: Action frame from non-authed peer\n"); |
53e80511 JC |
756 | rcu_read_unlock(); |
757 | return; | |
758 | } | |
759 | ||
57cf8043 | 760 | if (sta && sta->plink_state == NL80211_PLINK_BLOCKED) { |
d0709a65 | 761 | rcu_read_unlock(); |
c3896d2c LCC |
762 | return; |
763 | } | |
764 | ||
765 | /* Now we will figure out the appropriate event... */ | |
766 | event = PLINK_UNDEFINED; | |
54ef656b | 767 | if (ftype != WLAN_SP_MESH_PEERING_CLOSE && |
f743ff49 | 768 | !mesh_matches_local(sdata, &elems)) { |
d12c7452 | 769 | matches_local = false; |
c3896d2c | 770 | switch (ftype) { |
54ef656b | 771 | case WLAN_SP_MESH_PEERING_OPEN: |
c3896d2c LCC |
772 | event = OPN_RJCT; |
773 | break; | |
54ef656b | 774 | case WLAN_SP_MESH_PEERING_CONFIRM: |
c3896d2c LCC |
775 | event = CNF_RJCT; |
776 | break; | |
54ef656b | 777 | default: |
c3896d2c LCC |
778 | break; |
779 | } | |
d12c7452 CL |
780 | } |
781 | ||
782 | if (!sta && !matches_local) { | |
783 | rcu_read_unlock(); | |
54ef656b | 784 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
d12c7452 | 785 | llid = 0; |
54ef656b TP |
786 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
787 | mgmt->sa, llid, plid, reason); | |
d12c7452 | 788 | return; |
c3896d2c | 789 | } else if (!sta) { |
54ef656b | 790 | /* ftype == WLAN_SP_MESH_PEERING_OPEN */ |
c3896d2c | 791 | if (!mesh_plink_free_count(sdata)) { |
bdcbd8e0 | 792 | mpl_dbg(sdata, "Mesh plink error: no more free plinks\n"); |
73651ee6 JB |
793 | rcu_read_unlock(); |
794 | return; | |
795 | } | |
c3896d2c | 796 | event = OPN_ACPT; |
d12c7452 | 797 | } else if (matches_local) { |
c3896d2c | 798 | switch (ftype) { |
54ef656b | 799 | case WLAN_SP_MESH_PEERING_OPEN: |
c3896d2c | 800 | if (!mesh_plink_free_count(sdata) || |
d0709a65 | 801 | (sta->plid && sta->plid != plid)) |
c3896d2c LCC |
802 | event = OPN_IGNR; |
803 | else | |
804 | event = OPN_ACPT; | |
805 | break; | |
54ef656b | 806 | case WLAN_SP_MESH_PEERING_CONFIRM: |
c3896d2c | 807 | if (!mesh_plink_free_count(sdata) || |
d0709a65 | 808 | (sta->llid != llid || sta->plid != plid)) |
c3896d2c LCC |
809 | event = CNF_IGNR; |
810 | else | |
811 | event = CNF_ACPT; | |
812 | break; | |
54ef656b | 813 | case WLAN_SP_MESH_PEERING_CLOSE: |
57cf8043 | 814 | if (sta->plink_state == NL80211_PLINK_ESTAB) |
c3896d2c LCC |
815 | /* Do not check for llid or plid. This does not |
816 | * follow the standard but since multiple plinks | |
817 | * per sta are not supported, it is necessary in | |
818 | * order to avoid a livelock when MP A sees an | |
819 | * establish peer link to MP B but MP B does not | |
820 | * see it. This can be caused by a timeout in | |
821 | * B's peer link establishment or B beign | |
822 | * restarted. | |
823 | */ | |
824 | event = CLS_ACPT; | |
825 | else if (sta->plid != plid) | |
826 | event = CLS_IGNR; | |
827 | else if (ie_len == 7 && sta->llid != llid) | |
828 | event = CLS_IGNR; | |
829 | else | |
830 | event = CLS_ACPT; | |
831 | break; | |
832 | default: | |
bdcbd8e0 | 833 | mpl_dbg(sdata, "Mesh plink: unknown frame subtype\n"); |
d0709a65 | 834 | rcu_read_unlock(); |
c3896d2c LCC |
835 | return; |
836 | } | |
54ab1ffb TP |
837 | } |
838 | ||
839 | if (event == OPN_ACPT) { | |
296fcba3 | 840 | rcu_read_unlock(); |
54ab1ffb | 841 | /* allocate sta entry if necessary and update info */ |
296fcba3 | 842 | sta = mesh_sta_info_get(sdata, mgmt->sa, &elems); |
54ab1ffb | 843 | if (!sta) { |
bdcbd8e0 | 844 | mpl_dbg(sdata, "Mesh plink: failed to init peer!\n"); |
54ab1ffb TP |
845 | rcu_read_unlock(); |
846 | return; | |
847 | } | |
c3896d2c LCC |
848 | } |
849 | ||
95e48add TP |
850 | mpl_dbg(sdata, "peer %pM in state %s got event %s\n", mgmt->sa, |
851 | mplstates[sta->plink_state], mplevents[event]); | |
c3896d2c | 852 | reason = 0; |
54ab1ffb | 853 | spin_lock_bh(&sta->lock); |
c3896d2c LCC |
854 | switch (sta->plink_state) { |
855 | /* spin_unlock as soon as state is updated at each case */ | |
57cf8043 | 856 | case NL80211_PLINK_LISTEN: |
c3896d2c LCC |
857 | switch (event) { |
858 | case CLS_ACPT: | |
859 | mesh_plink_fsm_restart(sta); | |
07346f81 | 860 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
861 | break; |
862 | case OPN_ACPT: | |
57cf8043 | 863 | sta->plink_state = NL80211_PLINK_OPN_RCVD; |
c3896d2c LCC |
864 | sta->plid = plid; |
865 | get_random_bytes(&llid, 2); | |
866 | sta->llid = llid; | |
453e66f2 MP |
867 | mesh_plink_timer_set(sta, |
868 | mshcfg->dot11MeshRetryTimeout); | |
3f52b7e3 MP |
869 | |
870 | /* set the non-peer mode to active during peering */ | |
39886b61 | 871 | changed |= ieee80211_mps_local_status_update(sdata); |
3f52b7e3 | 872 | |
07346f81 | 873 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
874 | mesh_plink_frame_tx(sdata, |
875 | WLAN_SP_MESH_PEERING_OPEN, | |
876 | sta->sta.addr, llid, 0, 0); | |
877 | mesh_plink_frame_tx(sdata, | |
878 | WLAN_SP_MESH_PEERING_CONFIRM, | |
879 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
880 | break; |
881 | default: | |
07346f81 | 882 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
883 | break; |
884 | } | |
885 | break; | |
886 | ||
57cf8043 | 887 | case NL80211_PLINK_OPN_SNT: |
c3896d2c LCC |
888 | switch (event) { |
889 | case OPN_RJCT: | |
890 | case CNF_RJCT: | |
54ef656b | 891 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
c3896d2c LCC |
892 | case CLS_ACPT: |
893 | if (!reason) | |
54ef656b | 894 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
c3896d2c | 895 | sta->reason = reason; |
57cf8043 | 896 | sta->plink_state = NL80211_PLINK_HOLDING; |
c3896d2c | 897 | if (!mod_plink_timer(sta, |
453e66f2 | 898 | mshcfg->dot11MeshHoldingTimeout)) |
c3896d2c LCC |
899 | sta->ignore_plink_timer = true; |
900 | ||
901 | llid = sta->llid; | |
07346f81 | 902 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
903 | mesh_plink_frame_tx(sdata, |
904 | WLAN_SP_MESH_PEERING_CLOSE, | |
905 | sta->sta.addr, llid, plid, reason); | |
c3896d2c LCC |
906 | break; |
907 | case OPN_ACPT: | |
908 | /* retry timer is left untouched */ | |
57cf8043 | 909 | sta->plink_state = NL80211_PLINK_OPN_RCVD; |
c3896d2c LCC |
910 | sta->plid = plid; |
911 | llid = sta->llid; | |
07346f81 | 912 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
913 | mesh_plink_frame_tx(sdata, |
914 | WLAN_SP_MESH_PEERING_CONFIRM, | |
915 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
916 | break; |
917 | case CNF_ACPT: | |
57cf8043 | 918 | sta->plink_state = NL80211_PLINK_CNF_RCVD; |
c3896d2c | 919 | if (!mod_plink_timer(sta, |
453e66f2 | 920 | mshcfg->dot11MeshConfirmTimeout)) |
c3896d2c LCC |
921 | sta->ignore_plink_timer = true; |
922 | ||
07346f81 | 923 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
924 | break; |
925 | default: | |
07346f81 | 926 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
927 | break; |
928 | } | |
929 | break; | |
930 | ||
57cf8043 | 931 | case NL80211_PLINK_OPN_RCVD: |
c3896d2c LCC |
932 | switch (event) { |
933 | case OPN_RJCT: | |
934 | case CNF_RJCT: | |
54ef656b | 935 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
c3896d2c LCC |
936 | case CLS_ACPT: |
937 | if (!reason) | |
54ef656b | 938 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
c3896d2c | 939 | sta->reason = reason; |
57cf8043 | 940 | sta->plink_state = NL80211_PLINK_HOLDING; |
c3896d2c | 941 | if (!mod_plink_timer(sta, |
453e66f2 | 942 | mshcfg->dot11MeshHoldingTimeout)) |
c3896d2c LCC |
943 | sta->ignore_plink_timer = true; |
944 | ||
945 | llid = sta->llid; | |
07346f81 | 946 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
947 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
948 | sta->sta.addr, llid, plid, reason); | |
c3896d2c LCC |
949 | break; |
950 | case OPN_ACPT: | |
951 | llid = sta->llid; | |
07346f81 | 952 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
953 | mesh_plink_frame_tx(sdata, |
954 | WLAN_SP_MESH_PEERING_CONFIRM, | |
955 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
956 | break; |
957 | case CNF_ACPT: | |
d0709a65 | 958 | del_timer(&sta->plink_timer); |
57cf8043 | 959 | sta->plink_state = NL80211_PLINK_ESTAB; |
07346f81 | 960 | spin_unlock_bh(&sta->lock); |
df323818 | 961 | changed |= mesh_plink_inc_estab_count(sdata); |
57aac7c5 | 962 | changed |= mesh_set_ht_prot_mode(sdata); |
3b144658 | 963 | changed |= mesh_set_short_slot_time(sdata); |
bdcbd8e0 | 964 | mpl_dbg(sdata, "Mesh plink with %pM ESTABLISHED\n", |
0c68ae26 | 965 | sta->sta.addr); |
3f52b7e3 | 966 | ieee80211_mps_sta_status_update(sta); |
39886b61 | 967 | changed |= ieee80211_mps_set_sta_local_pm(sta, |
3f52b7e3 | 968 | mshcfg->power_mode); |
c3896d2c LCC |
969 | break; |
970 | default: | |
07346f81 | 971 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
972 | break; |
973 | } | |
974 | break; | |
975 | ||
57cf8043 | 976 | case NL80211_PLINK_CNF_RCVD: |
c3896d2c LCC |
977 | switch (event) { |
978 | case OPN_RJCT: | |
979 | case CNF_RJCT: | |
54ef656b | 980 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
c3896d2c LCC |
981 | case CLS_ACPT: |
982 | if (!reason) | |
54ef656b | 983 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
c3896d2c | 984 | sta->reason = reason; |
57cf8043 | 985 | sta->plink_state = NL80211_PLINK_HOLDING; |
c3896d2c | 986 | if (!mod_plink_timer(sta, |
453e66f2 | 987 | mshcfg->dot11MeshHoldingTimeout)) |
c3896d2c LCC |
988 | sta->ignore_plink_timer = true; |
989 | ||
990 | llid = sta->llid; | |
07346f81 | 991 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
992 | mesh_plink_frame_tx(sdata, |
993 | WLAN_SP_MESH_PEERING_CLOSE, | |
994 | sta->sta.addr, llid, plid, reason); | |
ff59dc76 | 995 | break; |
c3896d2c | 996 | case OPN_ACPT: |
d0709a65 | 997 | del_timer(&sta->plink_timer); |
57cf8043 | 998 | sta->plink_state = NL80211_PLINK_ESTAB; |
07346f81 | 999 | spin_unlock_bh(&sta->lock); |
df323818 | 1000 | changed |= mesh_plink_inc_estab_count(sdata); |
57aac7c5 | 1001 | changed |= mesh_set_ht_prot_mode(sdata); |
3b144658 | 1002 | changed |= mesh_set_short_slot_time(sdata); |
bdcbd8e0 | 1003 | mpl_dbg(sdata, "Mesh plink with %pM ESTABLISHED\n", |
0c68ae26 | 1004 | sta->sta.addr); |
54ef656b TP |
1005 | mesh_plink_frame_tx(sdata, |
1006 | WLAN_SP_MESH_PEERING_CONFIRM, | |
1007 | sta->sta.addr, llid, plid, 0); | |
3f52b7e3 | 1008 | ieee80211_mps_sta_status_update(sta); |
39886b61 TP |
1009 | changed |= ieee80211_mps_set_sta_local_pm(sta, |
1010 | mshcfg->power_mode); | |
c3896d2c LCC |
1011 | break; |
1012 | default: | |
07346f81 | 1013 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
1014 | break; |
1015 | } | |
1016 | break; | |
1017 | ||
57cf8043 | 1018 | case NL80211_PLINK_ESTAB: |
c3896d2c LCC |
1019 | switch (event) { |
1020 | case CLS_ACPT: | |
54ef656b | 1021 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
c3896d2c | 1022 | sta->reason = reason; |
df323818 | 1023 | changed |= __mesh_plink_deactivate(sta); |
57cf8043 | 1024 | sta->plink_state = NL80211_PLINK_HOLDING; |
c3896d2c | 1025 | llid = sta->llid; |
453e66f2 | 1026 | mod_plink_timer(sta, mshcfg->dot11MeshHoldingTimeout); |
07346f81 | 1027 | spin_unlock_bh(&sta->lock); |
57aac7c5 | 1028 | changed |= mesh_set_ht_prot_mode(sdata); |
3b144658 | 1029 | changed |= mesh_set_short_slot_time(sdata); |
54ef656b TP |
1030 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
1031 | sta->sta.addr, llid, plid, reason); | |
c3896d2c LCC |
1032 | break; |
1033 | case OPN_ACPT: | |
1034 | llid = sta->llid; | |
07346f81 | 1035 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
1036 | mesh_plink_frame_tx(sdata, |
1037 | WLAN_SP_MESH_PEERING_CONFIRM, | |
1038 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
1039 | break; |
1040 | default: | |
07346f81 | 1041 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
1042 | break; |
1043 | } | |
1044 | break; | |
57cf8043 | 1045 | case NL80211_PLINK_HOLDING: |
c3896d2c LCC |
1046 | switch (event) { |
1047 | case CLS_ACPT: | |
d0709a65 | 1048 | if (del_timer(&sta->plink_timer)) |
c3896d2c | 1049 | sta->ignore_plink_timer = 1; |
c3896d2c | 1050 | mesh_plink_fsm_restart(sta); |
07346f81 | 1051 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
1052 | break; |
1053 | case OPN_ACPT: | |
1054 | case CNF_ACPT: | |
1055 | case OPN_RJCT: | |
1056 | case CNF_RJCT: | |
1057 | llid = sta->llid; | |
1058 | reason = sta->reason; | |
07346f81 | 1059 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
1060 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
1061 | sta->sta.addr, llid, plid, reason); | |
c3896d2c LCC |
1062 | break; |
1063 | default: | |
07346f81 | 1064 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
1065 | } |
1066 | break; | |
1067 | default: | |
b4e08ea1 | 1068 | /* should not get here, PLINK_BLOCKED is dealt with at the |
3ad2f3fb | 1069 | * beginning of the function |
c3896d2c | 1070 | */ |
07346f81 | 1071 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
1072 | break; |
1073 | } | |
d0709a65 JB |
1074 | |
1075 | rcu_read_unlock(); | |
57aac7c5 | 1076 | |
ecccd072 | 1077 | if (changed) |
2b5e1967 | 1078 | ieee80211_mbss_info_change_notify(sdata, changed); |
c3896d2c | 1079 | } |