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 | 40 | static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata, |
bf7cd94d JB |
41 | enum ieee80211_self_protected_actioncode action, |
42 | u8 *da, __le16 llid, __le16 plid, __le16 reason); | |
ba4a14e1 | 43 | |
c3896d2c LCC |
44 | /** |
45 | * mesh_plink_fsm_restart - restart a mesh peer link finite state machine | |
46 | * | |
23c7a29c | 47 | * @sta: mesh peer link to restart |
c3896d2c | 48 | * |
07346f81 | 49 | * Locking: this function must be called holding sta->lock |
c3896d2c LCC |
50 | */ |
51 | static inline void mesh_plink_fsm_restart(struct sta_info *sta) | |
52 | { | |
57cf8043 | 53 | sta->plink_state = NL80211_PLINK_LISTEN; |
37659ff8 LCC |
54 | sta->llid = sta->plid = sta->reason = 0; |
55 | sta->plink_retries = 0; | |
c3896d2c LCC |
56 | } |
57 | ||
3b144658 TP |
58 | /* |
59 | * mesh_set_short_slot_time - enable / disable ERP short slot time. | |
60 | * | |
61 | * The standard indirectly mandates mesh STAs to turn off short slot time by | |
62 | * disallowing advertising this (802.11-2012 8.4.1.4), but that doesn't mean we | |
63 | * can't be sneaky about it. Enable short slot time if all mesh STAs in the | |
64 | * MBSS support ERP rates. | |
65 | * | |
66 | * Returns BSS_CHANGED_ERP_SLOT or 0 for no change. | |
67 | */ | |
68 | static u32 mesh_set_short_slot_time(struct ieee80211_sub_if_data *sdata) | |
69 | { | |
70 | struct ieee80211_local *local = sdata->local; | |
71 | enum ieee80211_band band = ieee80211_get_sdata_band(sdata); | |
72 | struct ieee80211_supported_band *sband = local->hw.wiphy->bands[band]; | |
73 | struct sta_info *sta; | |
74 | u32 erp_rates = 0, changed = 0; | |
75 | int i; | |
76 | bool short_slot = false; | |
77 | ||
78 | if (band == IEEE80211_BAND_5GHZ) { | |
79 | /* (IEEE 802.11-2012 19.4.5) */ | |
80 | short_slot = true; | |
81 | goto out; | |
82 | } else if (band != IEEE80211_BAND_2GHZ || | |
83 | (band == IEEE80211_BAND_2GHZ && | |
84 | local->hw.flags & IEEE80211_HW_2GHZ_SHORT_SLOT_INCAPABLE)) | |
85 | goto out; | |
86 | ||
87 | for (i = 0; i < sband->n_bitrates; i++) | |
88 | if (sband->bitrates[i].flags & IEEE80211_RATE_ERP_G) | |
89 | erp_rates |= BIT(i); | |
90 | ||
91 | if (!erp_rates) | |
92 | goto out; | |
93 | ||
94 | rcu_read_lock(); | |
95 | list_for_each_entry_rcu(sta, &local->sta_list, list) { | |
96 | if (sdata != sta->sdata || | |
97 | sta->plink_state != NL80211_PLINK_ESTAB) | |
98 | continue; | |
99 | ||
100 | short_slot = false; | |
101 | if (erp_rates & sta->sta.supp_rates[band]) | |
102 | short_slot = true; | |
103 | else | |
104 | break; | |
105 | } | |
106 | rcu_read_unlock(); | |
107 | ||
108 | out: | |
109 | if (sdata->vif.bss_conf.use_short_slot != short_slot) { | |
110 | sdata->vif.bss_conf.use_short_slot = short_slot; | |
111 | changed = BSS_CHANGED_ERP_SLOT; | |
112 | mpl_dbg(sdata, "mesh_plink %pM: ERP short slot time %d\n", | |
113 | sdata->vif.addr, short_slot); | |
114 | } | |
115 | return changed; | |
116 | } | |
117 | ||
2c53040f | 118 | /** |
cbf9322e | 119 | * mesh_set_ht_prot_mode - set correct HT protection mode |
57aac7c5 | 120 | * |
cbf9322e AN |
121 | * Section 9.23.3.5 of IEEE 80211-2012 describes the protection rules for HT |
122 | * mesh STA in a MBSS. Three HT protection modes are supported for now, non-HT | |
123 | * mixed mode, 20MHz-protection and no-protection mode. non-HT mixed mode is | |
124 | * selected if any non-HT peers are present in our MBSS. 20MHz-protection mode | |
125 | * is selected if all peers in our 20/40MHz MBSS support HT and atleast one | |
126 | * HT20 peer is present. Otherwise no-protection mode is selected. | |
57aac7c5 AN |
127 | */ |
128 | static u32 mesh_set_ht_prot_mode(struct ieee80211_sub_if_data *sdata) | |
129 | { | |
130 | struct ieee80211_local *local = sdata->local; | |
131 | struct sta_info *sta; | |
57aac7c5 AN |
132 | u16 ht_opmode; |
133 | bool non_ht_sta = false, ht20_sta = false; | |
134 | ||
4bf88530 | 135 | if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT) |
57aac7c5 AN |
136 | return 0; |
137 | ||
138 | rcu_read_lock(); | |
139 | list_for_each_entry_rcu(sta, &local->sta_list, list) { | |
cbf9322e AN |
140 | if (sdata != sta->sdata || |
141 | sta->plink_state != NL80211_PLINK_ESTAB) | |
142 | continue; | |
143 | ||
52ac8c48 TP |
144 | if (sta->sta.bandwidth > IEEE80211_STA_RX_BW_20) |
145 | continue; | |
146 | ||
147 | if (!sta->sta.ht_cap.ht_supported) { | |
148 | mpl_dbg(sdata, "nonHT sta (%pM) is present\n", | |
149 | sta->sta.addr); | |
cbf9322e | 150 | non_ht_sta = true; |
cbf9322e | 151 | break; |
57aac7c5 | 152 | } |
52ac8c48 TP |
153 | |
154 | mpl_dbg(sdata, "HT20 sta (%pM) is present\n", sta->sta.addr); | |
155 | ht20_sta = true; | |
57aac7c5 | 156 | } |
57aac7c5 AN |
157 | rcu_read_unlock(); |
158 | ||
159 | if (non_ht_sta) | |
160 | ht_opmode = IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED; | |
466f310d | 161 | else if (ht20_sta && |
4bf88530 | 162 | sdata->vif.bss_conf.chandef.width > NL80211_CHAN_WIDTH_20) |
57aac7c5 AN |
163 | ht_opmode = IEEE80211_HT_OP_MODE_PROTECTION_20MHZ; |
164 | else | |
165 | ht_opmode = IEEE80211_HT_OP_MODE_PROTECTION_NONE; | |
166 | ||
52ac8c48 TP |
167 | if (sdata->vif.bss_conf.ht_operation_mode == ht_opmode) |
168 | return 0; | |
57aac7c5 | 169 | |
52ac8c48 TP |
170 | sdata->vif.bss_conf.ht_operation_mode = ht_opmode; |
171 | sdata->u.mesh.mshcfg.ht_opmode = ht_opmode; | |
172 | mpl_dbg(sdata, "selected new HT protection mode %d\n", ht_opmode); | |
173 | return BSS_CHANGED_HT; | |
57aac7c5 AN |
174 | } |
175 | ||
c3896d2c | 176 | /** |
c9370197 | 177 | * __mesh_plink_deactivate - deactivate mesh peer link |
c3896d2c LCC |
178 | * |
179 | * @sta: mesh peer link to deactivate | |
180 | * | |
181 | * All mesh paths with this peer as next hop will be flushed | |
df323818 | 182 | * Returns beacon changed flag if the beacon content changed. |
c3896d2c | 183 | * |
07346f81 | 184 | * Locking: the caller must hold sta->lock |
c3896d2c | 185 | */ |
df323818 | 186 | static u32 __mesh_plink_deactivate(struct sta_info *sta) |
c3896d2c | 187 | { |
d0709a65 | 188 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
df323818 | 189 | u32 changed = 0; |
d0709a65 | 190 | |
df323818 MP |
191 | if (sta->plink_state == NL80211_PLINK_ESTAB) |
192 | changed = mesh_plink_dec_estab_count(sdata); | |
57cf8043 | 193 | sta->plink_state = NL80211_PLINK_BLOCKED; |
c3896d2c | 194 | mesh_path_flush_by_nexthop(sta); |
c9370197 | 195 | |
3f52b7e3 | 196 | ieee80211_mps_sta_status_update(sta); |
39886b61 | 197 | changed |= ieee80211_mps_local_status_update(sdata); |
3f52b7e3 | 198 | |
df323818 | 199 | return changed; |
c3896d2c LCC |
200 | } |
201 | ||
902acc78 | 202 | /** |
c9370197 | 203 | * mesh_plink_deactivate - deactivate mesh peer link |
902acc78 JB |
204 | * |
205 | * @sta: mesh peer link to deactivate | |
206 | * | |
207 | * All mesh paths with this peer as next hop will be flushed | |
208 | */ | |
45b5028e | 209 | u32 mesh_plink_deactivate(struct sta_info *sta) |
902acc78 | 210 | { |
c9370197 | 211 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
df323818 | 212 | u32 changed; |
c9370197 | 213 | |
07346f81 | 214 | spin_lock_bh(&sta->lock); |
df323818 | 215 | changed = __mesh_plink_deactivate(sta); |
ba4a14e1 TP |
216 | sta->reason = cpu_to_le16(WLAN_REASON_MESH_PEER_CANCELED); |
217 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, | |
218 | sta->sta.addr, sta->llid, sta->plid, | |
219 | sta->reason); | |
07346f81 | 220 | spin_unlock_bh(&sta->lock); |
c9370197 | 221 | |
45b5028e | 222 | return changed; |
902acc78 JB |
223 | } |
224 | ||
f698d856 | 225 | static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata, |
bf7cd94d JB |
226 | enum ieee80211_self_protected_actioncode action, |
227 | u8 *da, __le16 llid, __le16 plid, __le16 reason) | |
228 | { | |
f698d856 | 229 | struct ieee80211_local *local = sdata->local; |
3b69a9c5 | 230 | struct sk_buff *skb; |
e7570dfb | 231 | struct ieee80211_tx_info *info; |
c3896d2c LCC |
232 | struct ieee80211_mgmt *mgmt; |
233 | bool include_plid = false; | |
8db09850 | 234 | u16 peering_proto = 0; |
3b69a9c5 TP |
235 | u8 *pos, ie_len = 4; |
236 | int hdr_len = offsetof(struct ieee80211_mgmt, u.action.u.self_prot) + | |
237 | sizeof(mgmt->u.action.u.self_prot); | |
f609a43d | 238 | int err = -ENOMEM; |
3b69a9c5 | 239 | |
65e8b0cc | 240 | skb = dev_alloc_skb(local->tx_headroom + |
3b69a9c5 TP |
241 | hdr_len + |
242 | 2 + /* capability info */ | |
243 | 2 + /* AID */ | |
244 | 2 + 8 + /* supported rates */ | |
245 | 2 + (IEEE80211_MAX_SUPP_RATES - 8) + | |
246 | 2 + sdata->u.mesh.mesh_id_len + | |
247 | 2 + sizeof(struct ieee80211_meshconf_ie) + | |
176f3608 | 248 | 2 + sizeof(struct ieee80211_ht_cap) + |
074d46d1 | 249 | 2 + sizeof(struct ieee80211_ht_operation) + |
3b69a9c5 TP |
250 | 2 + 8 + /* peering IE */ |
251 | sdata->u.mesh.ie_len); | |
c3896d2c LCC |
252 | if (!skb) |
253 | return -1; | |
e7570dfb | 254 | info = IEEE80211_SKB_CB(skb); |
65e8b0cc | 255 | skb_reserve(skb, local->tx_headroom); |
3b69a9c5 TP |
256 | mgmt = (struct ieee80211_mgmt *) skb_put(skb, hdr_len); |
257 | memset(mgmt, 0, hdr_len); | |
e7827a70 HH |
258 | mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT | |
259 | IEEE80211_STYPE_ACTION); | |
c3896d2c | 260 | memcpy(mgmt->da, da, ETH_ALEN); |
47846c9b | 261 | memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN); |
915b5c50 | 262 | memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN); |
8db09850 TP |
263 | mgmt->u.action.category = WLAN_CATEGORY_SELF_PROTECTED; |
264 | mgmt->u.action.u.self_prot.action_code = action; | |
c3896d2c | 265 | |
8db09850 | 266 | if (action != WLAN_SP_MESH_PEERING_CLOSE) { |
55de908a JB |
267 | enum ieee80211_band band = ieee80211_get_sdata_band(sdata); |
268 | ||
8db09850 TP |
269 | /* capability info */ |
270 | pos = skb_put(skb, 2); | |
271 | memset(pos, 0, 2); | |
54ef656b | 272 | if (action == WLAN_SP_MESH_PEERING_CONFIRM) { |
8db09850 TP |
273 | /* AID */ |
274 | pos = skb_put(skb, 2); | |
77fa76bb | 275 | memcpy(pos + 2, &plid, 2); |
c3896d2c | 276 | } |
55de908a JB |
277 | if (ieee80211_add_srates_ie(sdata, skb, true, band) || |
278 | ieee80211_add_ext_srates_ie(sdata, skb, true, band) || | |
bf7cd94d JB |
279 | mesh_add_rsn_ie(sdata, skb) || |
280 | mesh_add_meshid_ie(sdata, skb) || | |
281 | mesh_add_meshconf_ie(sdata, skb)) | |
f609a43d | 282 | goto free; |
8db09850 | 283 | } else { /* WLAN_SP_MESH_PEERING_CLOSE */ |
e7570dfb | 284 | info->flags |= IEEE80211_TX_CTL_NO_ACK; |
bf7cd94d | 285 | if (mesh_add_meshid_ie(sdata, skb)) |
f609a43d | 286 | goto free; |
c3896d2c LCC |
287 | } |
288 | ||
8db09850 | 289 | /* Add Mesh Peering Management element */ |
c3896d2c | 290 | switch (action) { |
54ef656b | 291 | case WLAN_SP_MESH_PEERING_OPEN: |
c3896d2c | 292 | break; |
54ef656b | 293 | case WLAN_SP_MESH_PEERING_CONFIRM: |
8db09850 | 294 | ie_len += 2; |
c3896d2c LCC |
295 | include_plid = true; |
296 | break; | |
54ef656b | 297 | case WLAN_SP_MESH_PEERING_CLOSE: |
8db09850 TP |
298 | if (plid) { |
299 | ie_len += 2; | |
c3896d2c LCC |
300 | include_plid = true; |
301 | } | |
8db09850 | 302 | ie_len += 2; /* reason code */ |
c3896d2c | 303 | break; |
8db09850 | 304 | default: |
f609a43d TP |
305 | err = -EINVAL; |
306 | goto free; | |
c3896d2c LCC |
307 | } |
308 | ||
8db09850 | 309 | if (WARN_ON(skb_tailroom(skb) < 2 + ie_len)) |
f609a43d | 310 | goto free; |
8db09850 | 311 | |
c3896d2c | 312 | pos = skb_put(skb, 2 + ie_len); |
8db09850 | 313 | *pos++ = WLAN_EID_PEER_MGMT; |
c3896d2c | 314 | *pos++ = ie_len; |
8db09850 TP |
315 | memcpy(pos, &peering_proto, 2); |
316 | pos += 2; | |
c3896d2c | 317 | memcpy(pos, &llid, 2); |
8db09850 | 318 | pos += 2; |
c3896d2c | 319 | if (include_plid) { |
c3896d2c | 320 | memcpy(pos, &plid, 2); |
8db09850 | 321 | pos += 2; |
c3896d2c | 322 | } |
54ef656b | 323 | if (action == WLAN_SP_MESH_PEERING_CLOSE) { |
c3896d2c | 324 | memcpy(pos, &reason, 2); |
8db09850 | 325 | pos += 2; |
c3896d2c | 326 | } |
176f3608 TP |
327 | |
328 | if (action != WLAN_SP_MESH_PEERING_CLOSE) { | |
bf7cd94d JB |
329 | if (mesh_add_ht_cap_ie(sdata, skb) || |
330 | mesh_add_ht_oper_ie(sdata, skb)) | |
f609a43d | 331 | goto free; |
176f3608 TP |
332 | } |
333 | ||
bf7cd94d | 334 | if (mesh_add_vendor_ies(sdata, skb)) |
f609a43d | 335 | goto free; |
c3896d2c | 336 | |
62ae67be | 337 | ieee80211_tx_skb(sdata, skb); |
c3896d2c | 338 | return 0; |
f609a43d TP |
339 | free: |
340 | kfree_skb(skb); | |
341 | return err; | |
c3896d2c LCC |
342 | } |
343 | ||
296fcba3 TP |
344 | static void mesh_sta_info_init(struct ieee80211_sub_if_data *sdata, |
345 | struct sta_info *sta, | |
346 | struct ieee802_11_elems *elems, bool insert) | |
c3896d2c | 347 | { |
f698d856 | 348 | struct ieee80211_local *local = sdata->local; |
55de908a | 349 | enum ieee80211_band band = ieee80211_get_sdata_band(sdata); |
54ab1ffb | 350 | struct ieee80211_supported_band *sband; |
f68d776a | 351 | u32 rates, basic_rates = 0, changed = 0; |
c3896d2c | 352 | |
f743ff49 TP |
353 | sband = local->hw.wiphy->bands[band]; |
354 | rates = ieee80211_sta_get_rates(local, elems, band, &basic_rates); | |
d0709a65 | 355 | |
54ab1ffb | 356 | spin_lock_bh(&sta->lock); |
c3896d2c | 357 | sta->last_rx = jiffies; |
296fcba3 TP |
358 | |
359 | /* rates and capabilities don't change during peering */ | |
360 | if (sta->plink_state == NL80211_PLINK_ESTAB) | |
361 | goto out; | |
bae35d92 | 362 | |
f68d776a TP |
363 | if (sta->sta.supp_rates[band] != rates) |
364 | changed |= IEEE80211_RC_SUPP_RATES_CHANGED; | |
f743ff49 | 365 | sta->sta.supp_rates[band] = rates; |
54ab1ffb | 366 | |
52ac8c48 TP |
367 | if (ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband, |
368 | elems->ht_cap_elem, sta)) | |
369 | changed |= IEEE80211_RC_BW_CHANGED; | |
4bf88530 | 370 | |
52ac8c48 TP |
371 | /* HT peer is operating 20MHz-only */ |
372 | if (elems->ht_operation && | |
373 | !(elems->ht_operation->ht_param & | |
374 | IEEE80211_HT_PARAM_CHAN_WIDTH_ANY)) { | |
375 | if (sta->sta.bandwidth != IEEE80211_STA_RX_BW_20) | |
f68d776a | 376 | changed |= IEEE80211_RC_BW_CHANGED; |
52ac8c48 | 377 | sta->sta.bandwidth = IEEE80211_STA_RX_BW_20; |
57aac7c5 | 378 | } |
c7d25828 | 379 | |
59cf1d65 HS |
380 | if (insert) |
381 | rate_control_rate_init(sta); | |
f68d776a TP |
382 | else |
383 | rate_control_rate_update(local, sband, sta, changed); | |
296fcba3 | 384 | out: |
54ab1ffb | 385 | spin_unlock_bh(&sta->lock); |
296fcba3 TP |
386 | } |
387 | ||
388 | static struct sta_info * | |
389 | __mesh_sta_info_alloc(struct ieee80211_sub_if_data *sdata, u8 *hw_addr) | |
390 | { | |
391 | struct sta_info *sta; | |
54ab1ffb | 392 | |
296fcba3 | 393 | if (sdata->local->num_sta >= MESH_MAX_PLINKS) |
e87278e7 TP |
394 | return NULL; |
395 | ||
296fcba3 TP |
396 | sta = sta_info_alloc(sdata, hw_addr, GFP_KERNEL); |
397 | if (!sta) | |
398 | return NULL; | |
399 | ||
400 | sta->plink_state = NL80211_PLINK_LISTEN; | |
401 | init_timer(&sta->plink_timer); | |
402 | ||
403 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTH); | |
404 | sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC); | |
405 | sta_info_pre_move_state(sta, IEEE80211_STA_AUTHORIZED); | |
406 | ||
407 | set_sta_flag(sta, WLAN_STA_WME); | |
408 | ||
409 | return sta; | |
410 | } | |
411 | ||
412 | static struct sta_info * | |
413 | mesh_sta_info_alloc(struct ieee80211_sub_if_data *sdata, u8 *addr, | |
414 | struct ieee802_11_elems *elems) | |
415 | { | |
416 | struct sta_info *sta = NULL; | |
417 | ||
418 | /* Userspace handles peer allocation when security is enabled */ | |
419 | if (sdata->u.mesh.security & IEEE80211_MESH_SEC_AUTHED) | |
420 | cfg80211_notify_new_peer_candidate(sdata->dev, addr, | |
421 | elems->ie_start, | |
422 | elems->total_len, | |
423 | GFP_KERNEL); | |
424 | else | |
425 | sta = __mesh_sta_info_alloc(sdata, addr); | |
426 | ||
54ab1ffb TP |
427 | return sta; |
428 | } | |
429 | ||
296fcba3 TP |
430 | /* |
431 | * mesh_sta_info_get - return mesh sta info entry for @addr. | |
432 | * | |
433 | * @sdata: local meshif | |
434 | * @addr: peer's address | |
435 | * @elems: IEs from beacon or mesh peering frame. | |
436 | * | |
437 | * Return existing or newly allocated sta_info under RCU read lock. | |
438 | * (re)initialize with given IEs. | |
439 | */ | |
440 | static struct sta_info * | |
441 | mesh_sta_info_get(struct ieee80211_sub_if_data *sdata, | |
442 | u8 *addr, struct ieee802_11_elems *elems) __acquires(RCU) | |
443 | { | |
444 | struct sta_info *sta = NULL; | |
445 | ||
446 | rcu_read_lock(); | |
447 | sta = sta_info_get(sdata, addr); | |
448 | if (sta) { | |
449 | mesh_sta_info_init(sdata, sta, elems, false); | |
450 | } else { | |
451 | rcu_read_unlock(); | |
452 | /* can't run atomic */ | |
453 | sta = mesh_sta_info_alloc(sdata, addr, elems); | |
454 | if (!sta) { | |
455 | rcu_read_lock(); | |
456 | return NULL; | |
457 | } | |
458 | ||
3b4797bc TP |
459 | mesh_sta_info_init(sdata, sta, elems, true); |
460 | ||
296fcba3 TP |
461 | if (sta_info_insert_rcu(sta)) |
462 | return NULL; | |
463 | } | |
464 | ||
465 | return sta; | |
466 | } | |
467 | ||
468 | /* | |
469 | * mesh_neighbour_update - update or initialize new mesh neighbor. | |
470 | * | |
471 | * @sdata: local meshif | |
472 | * @addr: peer's address | |
473 | * @elems: IEs from beacon or mesh peering frame | |
474 | * | |
475 | * Initiates peering if appropriate. | |
476 | */ | |
f743ff49 TP |
477 | void mesh_neighbour_update(struct ieee80211_sub_if_data *sdata, |
478 | u8 *hw_addr, | |
54ab1ffb TP |
479 | struct ieee802_11_elems *elems) |
480 | { | |
481 | struct sta_info *sta; | |
39886b61 | 482 | u32 changed = 0; |
54ab1ffb | 483 | |
296fcba3 | 484 | sta = mesh_sta_info_get(sdata, hw_addr, elems); |
54ab1ffb TP |
485 | if (!sta) |
486 | goto out; | |
487 | ||
1570ca59 | 488 | if (mesh_peer_accepts_plinks(elems) && |
54ab1ffb TP |
489 | sta->plink_state == NL80211_PLINK_LISTEN && |
490 | sdata->u.mesh.accepting_plinks && | |
491 | sdata->u.mesh.mshcfg.auto_open_plinks && | |
492 | rssi_threshold_check(sta, sdata)) | |
39886b61 | 493 | changed = mesh_plink_open(sta); |
c3896d2c | 494 | |
3f52b7e3 | 495 | ieee80211_mps_frame_release(sta, elems); |
54ab1ffb | 496 | out: |
d0709a65 | 497 | rcu_read_unlock(); |
2b5e1967 | 498 | ieee80211_mbss_info_change_notify(sdata, changed); |
c3896d2c LCC |
499 | } |
500 | ||
501 | static void mesh_plink_timer(unsigned long data) | |
502 | { | |
503 | struct sta_info *sta; | |
504 | __le16 llid, plid, reason; | |
c3896d2c | 505 | struct ieee80211_sub_if_data *sdata; |
453e66f2 | 506 | struct mesh_config *mshcfg; |
c3896d2c | 507 | |
d0709a65 JB |
508 | /* |
509 | * This STA is valid because sta_info_destroy() will | |
510 | * del_timer_sync() this timer after having made sure | |
511 | * it cannot be readded (by deleting the plink.) | |
512 | */ | |
c3896d2c LCC |
513 | sta = (struct sta_info *) data; |
514 | ||
5bb644a0 JB |
515 | if (sta->sdata->local->quiescing) { |
516 | sta->plink_timer_was_running = true; | |
517 | return; | |
518 | } | |
519 | ||
07346f81 | 520 | spin_lock_bh(&sta->lock); |
c3896d2c LCC |
521 | if (sta->ignore_plink_timer) { |
522 | sta->ignore_plink_timer = false; | |
07346f81 | 523 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
524 | return; |
525 | } | |
bdcbd8e0 JB |
526 | mpl_dbg(sta->sdata, |
527 | "Mesh plink timer for %pM fired on state %d\n", | |
0c68ae26 | 528 | sta->sta.addr, sta->plink_state); |
c3896d2c LCC |
529 | reason = 0; |
530 | llid = sta->llid; | |
531 | plid = sta->plid; | |
d0709a65 | 532 | sdata = sta->sdata; |
453e66f2 | 533 | mshcfg = &sdata->u.mesh.mshcfg; |
c3896d2c LCC |
534 | |
535 | switch (sta->plink_state) { | |
57cf8043 JC |
536 | case NL80211_PLINK_OPN_RCVD: |
537 | case NL80211_PLINK_OPN_SNT: | |
c3896d2c | 538 | /* retry timer */ |
453e66f2 | 539 | if (sta->plink_retries < mshcfg->dot11MeshMaxRetries) { |
c3896d2c | 540 | u32 rand; |
bdcbd8e0 JB |
541 | mpl_dbg(sta->sdata, |
542 | "Mesh plink for %pM (retry, timeout): %d %d\n", | |
0c68ae26 JB |
543 | sta->sta.addr, sta->plink_retries, |
544 | sta->plink_timeout); | |
c3896d2c LCC |
545 | get_random_bytes(&rand, sizeof(u32)); |
546 | sta->plink_timeout = sta->plink_timeout + | |
547 | rand % sta->plink_timeout; | |
548 | ++sta->plink_retries; | |
d0709a65 | 549 | mod_plink_timer(sta, sta->plink_timeout); |
07346f81 | 550 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
551 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_OPEN, |
552 | sta->sta.addr, llid, 0, 0); | |
c3896d2c LCC |
553 | break; |
554 | } | |
54ef656b | 555 | reason = cpu_to_le16(WLAN_REASON_MESH_MAX_RETRIES); |
c3896d2c | 556 | /* fall through on else */ |
57cf8043 | 557 | case NL80211_PLINK_CNF_RCVD: |
c3896d2c LCC |
558 | /* confirm timer */ |
559 | if (!reason) | |
54ef656b | 560 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIRM_TIMEOUT); |
57cf8043 | 561 | sta->plink_state = NL80211_PLINK_HOLDING; |
453e66f2 | 562 | mod_plink_timer(sta, mshcfg->dot11MeshHoldingTimeout); |
07346f81 | 563 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
564 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
565 | sta->sta.addr, llid, plid, reason); | |
c3896d2c | 566 | break; |
57cf8043 | 567 | case NL80211_PLINK_HOLDING: |
c3896d2c | 568 | /* holding timer */ |
d0709a65 | 569 | del_timer(&sta->plink_timer); |
c3896d2c | 570 | mesh_plink_fsm_restart(sta); |
07346f81 | 571 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
572 | break; |
573 | default: | |
07346f81 | 574 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
575 | break; |
576 | } | |
c3896d2c LCC |
577 | } |
578 | ||
5bb644a0 JB |
579 | #ifdef CONFIG_PM |
580 | void mesh_plink_quiesce(struct sta_info *sta) | |
581 | { | |
aa5a1b8e TP |
582 | if (!ieee80211_vif_is_mesh(&sta->sdata->vif)) |
583 | return; | |
584 | ||
45b5028e TP |
585 | /* no kernel mesh sta timers have been initialized */ |
586 | if (sta->sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE) | |
587 | return; | |
588 | ||
5bb644a0 JB |
589 | if (del_timer_sync(&sta->plink_timer)) |
590 | sta->plink_timer_was_running = true; | |
591 | } | |
592 | ||
593 | void mesh_plink_restart(struct sta_info *sta) | |
594 | { | |
595 | if (sta->plink_timer_was_running) { | |
596 | add_timer(&sta->plink_timer); | |
597 | sta->plink_timer_was_running = false; | |
598 | } | |
599 | } | |
600 | #endif | |
601 | ||
c3896d2c LCC |
602 | static inline void mesh_plink_timer_set(struct sta_info *sta, int timeout) |
603 | { | |
604 | sta->plink_timer.expires = jiffies + (HZ * timeout / 1000); | |
605 | sta->plink_timer.data = (unsigned long) sta; | |
606 | sta->plink_timer.function = mesh_plink_timer; | |
607 | sta->plink_timeout = timeout; | |
c3896d2c LCC |
608 | add_timer(&sta->plink_timer); |
609 | } | |
610 | ||
39886b61 | 611 | u32 mesh_plink_open(struct sta_info *sta) |
c3896d2c LCC |
612 | { |
613 | __le16 llid; | |
d0709a65 | 614 | struct ieee80211_sub_if_data *sdata = sta->sdata; |
39886b61 | 615 | u32 changed; |
c3896d2c | 616 | |
c2c98fde | 617 | if (!test_sta_flag(sta, WLAN_STA_AUTH)) |
39886b61 | 618 | return 0; |
53e80511 | 619 | |
07346f81 | 620 | spin_lock_bh(&sta->lock); |
c3896d2c LCC |
621 | get_random_bytes(&llid, 2); |
622 | sta->llid = llid; | |
9385d04f CYY |
623 | if (sta->plink_state != NL80211_PLINK_LISTEN && |
624 | sta->plink_state != NL80211_PLINK_BLOCKED) { | |
07346f81 | 625 | spin_unlock_bh(&sta->lock); |
39886b61 | 626 | return 0; |
c3896d2c | 627 | } |
57cf8043 | 628 | sta->plink_state = NL80211_PLINK_OPN_SNT; |
453e66f2 | 629 | mesh_plink_timer_set(sta, sdata->u.mesh.mshcfg.dot11MeshRetryTimeout); |
07346f81 | 630 | spin_unlock_bh(&sta->lock); |
bdcbd8e0 JB |
631 | mpl_dbg(sdata, |
632 | "Mesh plink: starting establishment with %pM\n", | |
0c68ae26 | 633 | sta->sta.addr); |
c3896d2c | 634 | |
3f52b7e3 | 635 | /* set the non-peer mode to active during peering */ |
39886b61 | 636 | changed = ieee80211_mps_local_status_update(sdata); |
3f52b7e3 | 637 | |
39886b61 TP |
638 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_OPEN, |
639 | sta->sta.addr, llid, 0, 0); | |
640 | return changed; | |
c3896d2c LCC |
641 | } |
642 | ||
39886b61 | 643 | u32 mesh_plink_block(struct sta_info *sta) |
c3896d2c | 644 | { |
df323818 | 645 | u32 changed; |
c9370197 | 646 | |
07346f81 | 647 | spin_lock_bh(&sta->lock); |
df323818 | 648 | changed = __mesh_plink_deactivate(sta); |
57cf8043 | 649 | sta->plink_state = NL80211_PLINK_BLOCKED; |
07346f81 | 650 | spin_unlock_bh(&sta->lock); |
c9370197 | 651 | |
39886b61 | 652 | return changed; |
c3896d2c LCC |
653 | } |
654 | ||
c3896d2c | 655 | |
bf7cd94d JB |
656 | void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, |
657 | struct ieee80211_mgmt *mgmt, size_t len, | |
658 | struct ieee80211_rx_status *rx_status) | |
c3896d2c | 659 | { |
453e66f2 | 660 | struct mesh_config *mshcfg = &sdata->u.mesh.mshcfg; |
c3896d2c LCC |
661 | struct ieee802_11_elems elems; |
662 | struct sta_info *sta; | |
663 | enum plink_event event; | |
54ef656b | 664 | enum ieee80211_self_protected_actioncode ftype; |
c3896d2c | 665 | size_t baselen; |
57aac7c5 | 666 | bool matches_local = true; |
c3896d2c LCC |
667 | u8 ie_len; |
668 | u8 *baseaddr; | |
57aac7c5 | 669 | u32 changed = 0; |
c3896d2c | 670 | __le16 plid, llid, reason; |
bf7cd94d | 671 | static const char * const mplstates[] = { |
57cf8043 JC |
672 | [NL80211_PLINK_LISTEN] = "LISTEN", |
673 | [NL80211_PLINK_OPN_SNT] = "OPN-SNT", | |
674 | [NL80211_PLINK_OPN_RCVD] = "OPN-RCVD", | |
675 | [NL80211_PLINK_CNF_RCVD] = "CNF_RCVD", | |
676 | [NL80211_PLINK_ESTAB] = "ESTAB", | |
677 | [NL80211_PLINK_HOLDING] = "HOLDING", | |
678 | [NL80211_PLINK_BLOCKED] = "BLOCKED" | |
1460dd15 | 679 | }; |
c3896d2c | 680 | |
9c80d3dc JB |
681 | /* need action_code, aux */ |
682 | if (len < IEEE80211_MIN_ACTION_SIZE + 3) | |
683 | return; | |
684 | ||
c3896d2c | 685 | if (is_multicast_ether_addr(mgmt->da)) { |
bdcbd8e0 JB |
686 | mpl_dbg(sdata, |
687 | "Mesh plink: ignore frame from multicast address\n"); | |
c3896d2c LCC |
688 | return; |
689 | } | |
690 | ||
8db09850 TP |
691 | baseaddr = mgmt->u.action.u.self_prot.variable; |
692 | baselen = (u8 *) mgmt->u.action.u.self_prot.variable - (u8 *) mgmt; | |
693 | if (mgmt->u.action.u.self_prot.action_code == | |
54ef656b | 694 | WLAN_SP_MESH_PEERING_CONFIRM) { |
c3896d2c | 695 | baseaddr += 4; |
70bdb6b2 | 696 | baselen += 4; |
c3896d2c LCC |
697 | } |
698 | ieee802_11_parse_elems(baseaddr, len - baselen, &elems); | |
bf7cd94d | 699 | |
8db09850 | 700 | if (!elems.peering) { |
bdcbd8e0 JB |
701 | mpl_dbg(sdata, |
702 | "Mesh plink: missing necessary peer link ie\n"); | |
c3896d2c LCC |
703 | return; |
704 | } | |
bf7cd94d | 705 | |
b130e5ce | 706 | if (elems.rsn_len && |
bf7cd94d | 707 | sdata->u.mesh.security == IEEE80211_MESH_SEC_NONE) { |
bdcbd8e0 JB |
708 | mpl_dbg(sdata, |
709 | "Mesh plink: can't establish link with secure peer\n"); | |
5cff5e01 JC |
710 | return; |
711 | } | |
c3896d2c | 712 | |
8db09850 TP |
713 | ftype = mgmt->u.action.u.self_prot.action_code; |
714 | ie_len = elems.peering_len; | |
715 | if ((ftype == WLAN_SP_MESH_PEERING_OPEN && ie_len != 4) || | |
716 | (ftype == WLAN_SP_MESH_PEERING_CONFIRM && ie_len != 6) || | |
717 | (ftype == WLAN_SP_MESH_PEERING_CLOSE && ie_len != 6 | |
718 | && ie_len != 8)) { | |
bdcbd8e0 JB |
719 | mpl_dbg(sdata, |
720 | "Mesh plink: incorrect plink ie length %d %d\n", | |
721 | ftype, ie_len); | |
c3896d2c LCC |
722 | return; |
723 | } | |
724 | ||
54ef656b | 725 | if (ftype != WLAN_SP_MESH_PEERING_CLOSE && |
bf7cd94d | 726 | (!elems.mesh_id || !elems.mesh_config)) { |
bdcbd8e0 | 727 | mpl_dbg(sdata, "Mesh plink: missing necessary ie\n"); |
c3896d2c LCC |
728 | return; |
729 | } | |
730 | /* Note the lines below are correct, the llid in the frame is the plid | |
731 | * from the point of view of this host. | |
732 | */ | |
8db09850 | 733 | memcpy(&plid, PLINK_GET_LLID(elems.peering), 2); |
54ef656b | 734 | if (ftype == WLAN_SP_MESH_PEERING_CONFIRM || |
8db09850 TP |
735 | (ftype == WLAN_SP_MESH_PEERING_CLOSE && ie_len == 8)) |
736 | memcpy(&llid, PLINK_GET_PLID(elems.peering), 2); | |
c3896d2c | 737 | |
296fcba3 | 738 | /* WARNING: Only for sta pointer, is dropped & re-acquired */ |
d0709a65 JB |
739 | rcu_read_lock(); |
740 | ||
abe60632 | 741 | sta = sta_info_get(sdata, mgmt->sa); |
54ef656b | 742 | if (!sta && ftype != WLAN_SP_MESH_PEERING_OPEN) { |
bdcbd8e0 | 743 | mpl_dbg(sdata, "Mesh plink: cls or cnf from unknown peer\n"); |
d0709a65 | 744 | rcu_read_unlock(); |
c3896d2c LCC |
745 | return; |
746 | } | |
747 | ||
55335137 | 748 | if (ftype == WLAN_SP_MESH_PEERING_OPEN && |
3d4f9699 | 749 | !rssi_threshold_check(sta, sdata)) { |
bdcbd8e0 | 750 | mpl_dbg(sdata, "Mesh plink: %pM does not meet rssi threshold\n", |
3d4f9699 | 751 | mgmt->sa); |
55335137 AN |
752 | rcu_read_unlock(); |
753 | return; | |
754 | } | |
755 | ||
c2c98fde | 756 | if (sta && !test_sta_flag(sta, WLAN_STA_AUTH)) { |
bdcbd8e0 | 757 | mpl_dbg(sdata, "Mesh plink: Action frame from non-authed peer\n"); |
53e80511 JC |
758 | rcu_read_unlock(); |
759 | return; | |
760 | } | |
761 | ||
57cf8043 | 762 | if (sta && sta->plink_state == NL80211_PLINK_BLOCKED) { |
d0709a65 | 763 | rcu_read_unlock(); |
c3896d2c LCC |
764 | return; |
765 | } | |
766 | ||
767 | /* Now we will figure out the appropriate event... */ | |
768 | event = PLINK_UNDEFINED; | |
54ef656b | 769 | if (ftype != WLAN_SP_MESH_PEERING_CLOSE && |
f743ff49 | 770 | !mesh_matches_local(sdata, &elems)) { |
d12c7452 | 771 | matches_local = false; |
c3896d2c | 772 | switch (ftype) { |
54ef656b | 773 | case WLAN_SP_MESH_PEERING_OPEN: |
c3896d2c LCC |
774 | event = OPN_RJCT; |
775 | break; | |
54ef656b | 776 | case WLAN_SP_MESH_PEERING_CONFIRM: |
c3896d2c LCC |
777 | event = CNF_RJCT; |
778 | break; | |
54ef656b | 779 | default: |
c3896d2c LCC |
780 | break; |
781 | } | |
d12c7452 CL |
782 | } |
783 | ||
784 | if (!sta && !matches_local) { | |
785 | rcu_read_unlock(); | |
54ef656b | 786 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
d12c7452 | 787 | llid = 0; |
54ef656b TP |
788 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
789 | mgmt->sa, llid, plid, reason); | |
d12c7452 | 790 | return; |
c3896d2c | 791 | } else if (!sta) { |
54ef656b | 792 | /* ftype == WLAN_SP_MESH_PEERING_OPEN */ |
c3896d2c | 793 | if (!mesh_plink_free_count(sdata)) { |
bdcbd8e0 | 794 | mpl_dbg(sdata, "Mesh plink error: no more free plinks\n"); |
73651ee6 JB |
795 | rcu_read_unlock(); |
796 | return; | |
797 | } | |
c3896d2c | 798 | event = OPN_ACPT; |
d12c7452 | 799 | } else if (matches_local) { |
c3896d2c | 800 | switch (ftype) { |
54ef656b | 801 | case WLAN_SP_MESH_PEERING_OPEN: |
c3896d2c | 802 | if (!mesh_plink_free_count(sdata) || |
d0709a65 | 803 | (sta->plid && sta->plid != plid)) |
c3896d2c LCC |
804 | event = OPN_IGNR; |
805 | else | |
806 | event = OPN_ACPT; | |
807 | break; | |
54ef656b | 808 | case WLAN_SP_MESH_PEERING_CONFIRM: |
c3896d2c | 809 | if (!mesh_plink_free_count(sdata) || |
d0709a65 | 810 | (sta->llid != llid || sta->plid != plid)) |
c3896d2c LCC |
811 | event = CNF_IGNR; |
812 | else | |
813 | event = CNF_ACPT; | |
814 | break; | |
54ef656b | 815 | case WLAN_SP_MESH_PEERING_CLOSE: |
57cf8043 | 816 | if (sta->plink_state == NL80211_PLINK_ESTAB) |
c3896d2c LCC |
817 | /* Do not check for llid or plid. This does not |
818 | * follow the standard but since multiple plinks | |
819 | * per sta are not supported, it is necessary in | |
820 | * order to avoid a livelock when MP A sees an | |
821 | * establish peer link to MP B but MP B does not | |
822 | * see it. This can be caused by a timeout in | |
823 | * B's peer link establishment or B beign | |
824 | * restarted. | |
825 | */ | |
826 | event = CLS_ACPT; | |
827 | else if (sta->plid != plid) | |
828 | event = CLS_IGNR; | |
829 | else if (ie_len == 7 && sta->llid != llid) | |
830 | event = CLS_IGNR; | |
831 | else | |
832 | event = CLS_ACPT; | |
833 | break; | |
834 | default: | |
bdcbd8e0 | 835 | mpl_dbg(sdata, "Mesh plink: unknown frame subtype\n"); |
d0709a65 | 836 | rcu_read_unlock(); |
c3896d2c LCC |
837 | return; |
838 | } | |
54ab1ffb TP |
839 | } |
840 | ||
841 | if (event == OPN_ACPT) { | |
296fcba3 | 842 | rcu_read_unlock(); |
54ab1ffb | 843 | /* allocate sta entry if necessary and update info */ |
296fcba3 | 844 | sta = mesh_sta_info_get(sdata, mgmt->sa, &elems); |
54ab1ffb | 845 | if (!sta) { |
bdcbd8e0 | 846 | mpl_dbg(sdata, "Mesh plink: failed to init peer!\n"); |
54ab1ffb TP |
847 | rcu_read_unlock(); |
848 | return; | |
849 | } | |
c3896d2c LCC |
850 | } |
851 | ||
bdcbd8e0 JB |
852 | mpl_dbg(sdata, |
853 | "Mesh plink (peer, state, llid, plid, event): %pM %s %d %d %d\n", | |
1460dd15 | 854 | mgmt->sa, mplstates[sta->plink_state], |
0c68ae26 JB |
855 | le16_to_cpu(sta->llid), le16_to_cpu(sta->plid), |
856 | event); | |
c3896d2c | 857 | reason = 0; |
54ab1ffb | 858 | spin_lock_bh(&sta->lock); |
c3896d2c LCC |
859 | switch (sta->plink_state) { |
860 | /* spin_unlock as soon as state is updated at each case */ | |
57cf8043 | 861 | case NL80211_PLINK_LISTEN: |
c3896d2c LCC |
862 | switch (event) { |
863 | case CLS_ACPT: | |
864 | mesh_plink_fsm_restart(sta); | |
07346f81 | 865 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
866 | break; |
867 | case OPN_ACPT: | |
57cf8043 | 868 | sta->plink_state = NL80211_PLINK_OPN_RCVD; |
c3896d2c LCC |
869 | sta->plid = plid; |
870 | get_random_bytes(&llid, 2); | |
871 | sta->llid = llid; | |
453e66f2 MP |
872 | mesh_plink_timer_set(sta, |
873 | mshcfg->dot11MeshRetryTimeout); | |
3f52b7e3 MP |
874 | |
875 | /* set the non-peer mode to active during peering */ | |
39886b61 | 876 | changed |= ieee80211_mps_local_status_update(sdata); |
3f52b7e3 | 877 | |
07346f81 | 878 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
879 | mesh_plink_frame_tx(sdata, |
880 | WLAN_SP_MESH_PEERING_OPEN, | |
881 | sta->sta.addr, llid, 0, 0); | |
882 | mesh_plink_frame_tx(sdata, | |
883 | WLAN_SP_MESH_PEERING_CONFIRM, | |
884 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
885 | break; |
886 | default: | |
07346f81 | 887 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
888 | break; |
889 | } | |
890 | break; | |
891 | ||
57cf8043 | 892 | case NL80211_PLINK_OPN_SNT: |
c3896d2c LCC |
893 | switch (event) { |
894 | case OPN_RJCT: | |
895 | case CNF_RJCT: | |
54ef656b | 896 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
c3896d2c LCC |
897 | case CLS_ACPT: |
898 | if (!reason) | |
54ef656b | 899 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
c3896d2c | 900 | sta->reason = reason; |
57cf8043 | 901 | sta->plink_state = NL80211_PLINK_HOLDING; |
c3896d2c | 902 | if (!mod_plink_timer(sta, |
453e66f2 | 903 | mshcfg->dot11MeshHoldingTimeout)) |
c3896d2c LCC |
904 | sta->ignore_plink_timer = true; |
905 | ||
906 | llid = sta->llid; | |
07346f81 | 907 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
908 | mesh_plink_frame_tx(sdata, |
909 | WLAN_SP_MESH_PEERING_CLOSE, | |
910 | sta->sta.addr, llid, plid, reason); | |
c3896d2c LCC |
911 | break; |
912 | case OPN_ACPT: | |
913 | /* retry timer is left untouched */ | |
57cf8043 | 914 | sta->plink_state = NL80211_PLINK_OPN_RCVD; |
c3896d2c LCC |
915 | sta->plid = plid; |
916 | llid = sta->llid; | |
07346f81 | 917 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
918 | mesh_plink_frame_tx(sdata, |
919 | WLAN_SP_MESH_PEERING_CONFIRM, | |
920 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
921 | break; |
922 | case CNF_ACPT: | |
57cf8043 | 923 | sta->plink_state = NL80211_PLINK_CNF_RCVD; |
c3896d2c | 924 | if (!mod_plink_timer(sta, |
453e66f2 | 925 | mshcfg->dot11MeshConfirmTimeout)) |
c3896d2c LCC |
926 | sta->ignore_plink_timer = true; |
927 | ||
07346f81 | 928 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
929 | break; |
930 | default: | |
07346f81 | 931 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
932 | break; |
933 | } | |
934 | break; | |
935 | ||
57cf8043 | 936 | case NL80211_PLINK_OPN_RCVD: |
c3896d2c LCC |
937 | switch (event) { |
938 | case OPN_RJCT: | |
939 | case CNF_RJCT: | |
54ef656b | 940 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
c3896d2c LCC |
941 | case CLS_ACPT: |
942 | if (!reason) | |
54ef656b | 943 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
c3896d2c | 944 | sta->reason = reason; |
57cf8043 | 945 | sta->plink_state = NL80211_PLINK_HOLDING; |
c3896d2c | 946 | if (!mod_plink_timer(sta, |
453e66f2 | 947 | mshcfg->dot11MeshHoldingTimeout)) |
c3896d2c LCC |
948 | sta->ignore_plink_timer = true; |
949 | ||
950 | llid = sta->llid; | |
07346f81 | 951 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
952 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
953 | sta->sta.addr, llid, plid, reason); | |
c3896d2c LCC |
954 | break; |
955 | case OPN_ACPT: | |
956 | llid = sta->llid; | |
07346f81 | 957 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
958 | mesh_plink_frame_tx(sdata, |
959 | WLAN_SP_MESH_PEERING_CONFIRM, | |
960 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
961 | break; |
962 | case CNF_ACPT: | |
d0709a65 | 963 | del_timer(&sta->plink_timer); |
57cf8043 | 964 | sta->plink_state = NL80211_PLINK_ESTAB; |
07346f81 | 965 | spin_unlock_bh(&sta->lock); |
df323818 | 966 | changed |= mesh_plink_inc_estab_count(sdata); |
57aac7c5 | 967 | changed |= mesh_set_ht_prot_mode(sdata); |
3b144658 | 968 | changed |= mesh_set_short_slot_time(sdata); |
bdcbd8e0 | 969 | mpl_dbg(sdata, "Mesh plink with %pM ESTABLISHED\n", |
0c68ae26 | 970 | sta->sta.addr); |
3f52b7e3 | 971 | ieee80211_mps_sta_status_update(sta); |
39886b61 | 972 | changed |= ieee80211_mps_set_sta_local_pm(sta, |
3f52b7e3 | 973 | mshcfg->power_mode); |
c3896d2c LCC |
974 | break; |
975 | default: | |
07346f81 | 976 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
977 | break; |
978 | } | |
979 | break; | |
980 | ||
57cf8043 | 981 | case NL80211_PLINK_CNF_RCVD: |
c3896d2c LCC |
982 | switch (event) { |
983 | case OPN_RJCT: | |
984 | case CNF_RJCT: | |
54ef656b | 985 | reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG); |
c3896d2c LCC |
986 | case CLS_ACPT: |
987 | if (!reason) | |
54ef656b | 988 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
c3896d2c | 989 | sta->reason = reason; |
57cf8043 | 990 | sta->plink_state = NL80211_PLINK_HOLDING; |
c3896d2c | 991 | if (!mod_plink_timer(sta, |
453e66f2 | 992 | mshcfg->dot11MeshHoldingTimeout)) |
c3896d2c LCC |
993 | sta->ignore_plink_timer = true; |
994 | ||
995 | llid = sta->llid; | |
07346f81 | 996 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
997 | mesh_plink_frame_tx(sdata, |
998 | WLAN_SP_MESH_PEERING_CLOSE, | |
999 | sta->sta.addr, llid, plid, reason); | |
ff59dc76 | 1000 | break; |
c3896d2c | 1001 | case OPN_ACPT: |
d0709a65 | 1002 | del_timer(&sta->plink_timer); |
57cf8043 | 1003 | sta->plink_state = NL80211_PLINK_ESTAB; |
07346f81 | 1004 | spin_unlock_bh(&sta->lock); |
df323818 | 1005 | changed |= mesh_plink_inc_estab_count(sdata); |
57aac7c5 | 1006 | changed |= mesh_set_ht_prot_mode(sdata); |
3b144658 | 1007 | changed |= mesh_set_short_slot_time(sdata); |
bdcbd8e0 | 1008 | mpl_dbg(sdata, "Mesh plink with %pM ESTABLISHED\n", |
0c68ae26 | 1009 | sta->sta.addr); |
54ef656b TP |
1010 | mesh_plink_frame_tx(sdata, |
1011 | WLAN_SP_MESH_PEERING_CONFIRM, | |
1012 | sta->sta.addr, llid, plid, 0); | |
3f52b7e3 | 1013 | ieee80211_mps_sta_status_update(sta); |
39886b61 TP |
1014 | changed |= ieee80211_mps_set_sta_local_pm(sta, |
1015 | mshcfg->power_mode); | |
c3896d2c LCC |
1016 | break; |
1017 | default: | |
07346f81 | 1018 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
1019 | break; |
1020 | } | |
1021 | break; | |
1022 | ||
57cf8043 | 1023 | case NL80211_PLINK_ESTAB: |
c3896d2c LCC |
1024 | switch (event) { |
1025 | case CLS_ACPT: | |
54ef656b | 1026 | reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE); |
c3896d2c | 1027 | sta->reason = reason; |
df323818 | 1028 | changed |= __mesh_plink_deactivate(sta); |
57cf8043 | 1029 | sta->plink_state = NL80211_PLINK_HOLDING; |
c3896d2c | 1030 | llid = sta->llid; |
453e66f2 | 1031 | mod_plink_timer(sta, mshcfg->dot11MeshHoldingTimeout); |
07346f81 | 1032 | spin_unlock_bh(&sta->lock); |
57aac7c5 | 1033 | changed |= mesh_set_ht_prot_mode(sdata); |
3b144658 | 1034 | changed |= mesh_set_short_slot_time(sdata); |
54ef656b TP |
1035 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
1036 | sta->sta.addr, llid, plid, reason); | |
c3896d2c LCC |
1037 | break; |
1038 | case OPN_ACPT: | |
1039 | llid = sta->llid; | |
07346f81 | 1040 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
1041 | mesh_plink_frame_tx(sdata, |
1042 | WLAN_SP_MESH_PEERING_CONFIRM, | |
1043 | sta->sta.addr, llid, plid, 0); | |
c3896d2c LCC |
1044 | break; |
1045 | default: | |
07346f81 | 1046 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
1047 | break; |
1048 | } | |
1049 | break; | |
57cf8043 | 1050 | case NL80211_PLINK_HOLDING: |
c3896d2c LCC |
1051 | switch (event) { |
1052 | case CLS_ACPT: | |
d0709a65 | 1053 | if (del_timer(&sta->plink_timer)) |
c3896d2c | 1054 | sta->ignore_plink_timer = 1; |
c3896d2c | 1055 | mesh_plink_fsm_restart(sta); |
07346f81 | 1056 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
1057 | break; |
1058 | case OPN_ACPT: | |
1059 | case CNF_ACPT: | |
1060 | case OPN_RJCT: | |
1061 | case CNF_RJCT: | |
1062 | llid = sta->llid; | |
1063 | reason = sta->reason; | |
07346f81 | 1064 | spin_unlock_bh(&sta->lock); |
54ef656b TP |
1065 | mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE, |
1066 | sta->sta.addr, llid, plid, reason); | |
c3896d2c LCC |
1067 | break; |
1068 | default: | |
07346f81 | 1069 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
1070 | } |
1071 | break; | |
1072 | default: | |
b4e08ea1 | 1073 | /* should not get here, PLINK_BLOCKED is dealt with at the |
3ad2f3fb | 1074 | * beginning of the function |
c3896d2c | 1075 | */ |
07346f81 | 1076 | spin_unlock_bh(&sta->lock); |
c3896d2c LCC |
1077 | break; |
1078 | } | |
d0709a65 JB |
1079 | |
1080 | rcu_read_unlock(); | |
57aac7c5 AN |
1081 | |
1082 | if (changed) | |
2b5e1967 | 1083 | ieee80211_mbss_info_change_notify(sdata, changed); |
c3896d2c | 1084 | } |