2 * Copyright (c) 2008, 2009 open80211s Ltd.
3 * Author: Luis Carlos Cobo <luisca@cozybit.com>
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.
10 #include <linux/kernel.h>
11 #include <linux/random.h>
12 #include "ieee80211_i.h"
16 #define PLINK_GET_LLID(p) (p + 2)
17 #define PLINK_GET_PLID(p) (p + 4)
19 #define mod_plink_timer(s, t) (mod_timer(&s->plink_timer, \
20 jiffies + HZ * t / 1000))
22 #define dot11MeshMaxRetries(s) (s->u.mesh.mshcfg.dot11MeshMaxRetries)
23 #define dot11MeshRetryTimeout(s) (s->u.mesh.mshcfg.dot11MeshRetryTimeout)
24 #define dot11MeshConfirmTimeout(s) (s->u.mesh.mshcfg.dot11MeshConfirmTimeout)
25 #define dot11MeshHoldingTimeout(s) (s->u.mesh.mshcfg.dot11MeshHoldingTimeout)
26 #define dot11MeshMaxPeerLinks(s) (s->u.mesh.mshcfg.dot11MeshMaxPeerLinks)
28 /* We only need a valid sta if user configured a minimum rssi_threshold. */
29 #define rssi_threshold_check(sta, sdata) \
30 (sdata->u.mesh.mshcfg.rssi_threshold == 0 ||\
31 (sta && (s8) -ewma_read(&sta->avg_signal) > \
32 sdata->u.mesh.mshcfg.rssi_threshold))
46 static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata,
47 enum ieee80211_self_protected_actioncode action,
48 u8 *da, __le16 llid, __le16 plid, __le16 reason);
51 void mesh_plink_inc_estab_count(struct ieee80211_sub_if_data *sdata)
53 atomic_inc(&sdata->u.mesh.mshstats.estab_plinks);
54 mesh_accept_plinks_update(sdata);
58 void mesh_plink_dec_estab_count(struct ieee80211_sub_if_data *sdata)
60 atomic_dec(&sdata->u.mesh.mshstats.estab_plinks);
61 mesh_accept_plinks_update(sdata);
65 * mesh_plink_fsm_restart - restart a mesh peer link finite state machine
67 * @sta: mesh peer link to restart
69 * Locking: this function must be called holding sta->lock
71 static inline void mesh_plink_fsm_restart(struct sta_info *sta)
73 sta->plink_state = NL80211_PLINK_LISTEN;
74 sta->llid = sta->plid = sta->reason = 0;
75 sta->plink_retries = 0;
79 * Allocate mesh sta entry and insert into station table
81 static struct sta_info *mesh_plink_alloc(struct ieee80211_sub_if_data *sdata,
86 if (sdata->local->num_sta >= MESH_MAX_PLINKS)
89 sta = sta_info_alloc(sdata, hw_addr, GFP_KERNEL);
93 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
94 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
95 sta_info_pre_move_state(sta, IEEE80211_STA_AUTHORIZED);
97 set_sta_flag(sta, WLAN_STA_WME);
103 * mesh_set_ht_prot_mode - set correct HT protection mode
105 * Section 9.23.3.5 of IEEE 80211-2012 describes the protection rules for HT
106 * mesh STA in a MBSS. Three HT protection modes are supported for now, non-HT
107 * mixed mode, 20MHz-protection and no-protection mode. non-HT mixed mode is
108 * selected if any non-HT peers are present in our MBSS. 20MHz-protection mode
109 * is selected if all peers in our 20/40MHz MBSS support HT and atleast one
110 * HT20 peer is present. Otherwise no-protection mode is selected.
112 static u32 mesh_set_ht_prot_mode(struct ieee80211_sub_if_data *sdata)
114 struct ieee80211_local *local = sdata->local;
115 struct sta_info *sta;
118 bool non_ht_sta = false, ht20_sta = false;
120 if (local->_oper_channel_type == NL80211_CHAN_NO_HT)
124 list_for_each_entry_rcu(sta, &local->sta_list, list) {
125 if (sdata != sta->sdata ||
126 sta->plink_state != NL80211_PLINK_ESTAB)
129 switch (sta->ch_type) {
130 case NL80211_CHAN_NO_HT:
132 "mesh_plink %pM: nonHT sta (%pM) is present\n",
133 sdata->vif.addr, sta->sta.addr);
136 case NL80211_CHAN_HT20:
138 "mesh_plink %pM: HT20 sta (%pM) is present\n",
139 sdata->vif.addr, sta->sta.addr);
149 ht_opmode = IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED;
150 else if (ht20_sta && local->_oper_channel_type > NL80211_CHAN_HT20)
151 ht_opmode = IEEE80211_HT_OP_MODE_PROTECTION_20MHZ;
153 ht_opmode = IEEE80211_HT_OP_MODE_PROTECTION_NONE;
155 if (sdata->vif.bss_conf.ht_operation_mode != ht_opmode) {
156 sdata->vif.bss_conf.ht_operation_mode = ht_opmode;
157 sdata->u.mesh.mshcfg.ht_opmode = ht_opmode;
158 changed = BSS_CHANGED_HT;
160 "mesh_plink %pM: protection mode changed to %d\n",
161 sdata->vif.addr, ht_opmode);
168 * __mesh_plink_deactivate - deactivate mesh peer link
170 * @sta: mesh peer link to deactivate
172 * All mesh paths with this peer as next hop will be flushed
174 * Locking: the caller must hold sta->lock
176 static bool __mesh_plink_deactivate(struct sta_info *sta)
178 struct ieee80211_sub_if_data *sdata = sta->sdata;
179 bool deactivated = false;
181 if (sta->plink_state == NL80211_PLINK_ESTAB) {
182 mesh_plink_dec_estab_count(sdata);
185 sta->plink_state = NL80211_PLINK_BLOCKED;
186 mesh_path_flush_by_nexthop(sta);
192 * mesh_plink_deactivate - deactivate mesh peer link
194 * @sta: mesh peer link to deactivate
196 * All mesh paths with this peer as next hop will be flushed
198 void mesh_plink_deactivate(struct sta_info *sta)
200 struct ieee80211_sub_if_data *sdata = sta->sdata;
203 spin_lock_bh(&sta->lock);
204 deactivated = __mesh_plink_deactivate(sta);
205 sta->reason = cpu_to_le16(WLAN_REASON_MESH_PEER_CANCELED);
206 mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
207 sta->sta.addr, sta->llid, sta->plid,
209 spin_unlock_bh(&sta->lock);
212 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON);
215 static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata,
216 enum ieee80211_self_protected_actioncode action,
217 u8 *da, __le16 llid, __le16 plid, __le16 reason) {
218 struct ieee80211_local *local = sdata->local;
220 struct ieee80211_mgmt *mgmt;
221 bool include_plid = false;
222 u16 peering_proto = 0;
224 int hdr_len = offsetof(struct ieee80211_mgmt, u.action.u.self_prot) +
225 sizeof(mgmt->u.action.u.self_prot);
227 skb = dev_alloc_skb(local->tx_headroom +
229 2 + /* capability info */
231 2 + 8 + /* supported rates */
232 2 + (IEEE80211_MAX_SUPP_RATES - 8) +
233 2 + sdata->u.mesh.mesh_id_len +
234 2 + sizeof(struct ieee80211_meshconf_ie) +
235 2 + sizeof(struct ieee80211_ht_cap) +
236 2 + sizeof(struct ieee80211_ht_operation) +
237 2 + 8 + /* peering IE */
238 sdata->u.mesh.ie_len);
241 skb_reserve(skb, local->tx_headroom);
242 mgmt = (struct ieee80211_mgmt *) skb_put(skb, hdr_len);
243 memset(mgmt, 0, hdr_len);
244 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
245 IEEE80211_STYPE_ACTION);
246 memcpy(mgmt->da, da, ETH_ALEN);
247 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
248 memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
249 mgmt->u.action.category = WLAN_CATEGORY_SELF_PROTECTED;
250 mgmt->u.action.u.self_prot.action_code = action;
252 if (action != WLAN_SP_MESH_PEERING_CLOSE) {
253 /* capability info */
254 pos = skb_put(skb, 2);
256 if (action == WLAN_SP_MESH_PEERING_CONFIRM) {
258 pos = skb_put(skb, 2);
259 memcpy(pos + 2, &plid, 2);
261 if (ieee80211_add_srates_ie(&sdata->vif, skb, true) ||
262 ieee80211_add_ext_srates_ie(&sdata->vif, skb, true) ||
263 mesh_add_rsn_ie(skb, sdata) ||
264 mesh_add_meshid_ie(skb, sdata) ||
265 mesh_add_meshconf_ie(skb, sdata))
267 } else { /* WLAN_SP_MESH_PEERING_CLOSE */
268 if (mesh_add_meshid_ie(skb, sdata))
272 /* Add Mesh Peering Management element */
274 case WLAN_SP_MESH_PEERING_OPEN:
276 case WLAN_SP_MESH_PEERING_CONFIRM:
280 case WLAN_SP_MESH_PEERING_CLOSE:
285 ie_len += 2; /* reason code */
291 if (WARN_ON(skb_tailroom(skb) < 2 + ie_len))
294 pos = skb_put(skb, 2 + ie_len);
295 *pos++ = WLAN_EID_PEER_MGMT;
297 memcpy(pos, &peering_proto, 2);
299 memcpy(pos, &llid, 2);
302 memcpy(pos, &plid, 2);
305 if (action == WLAN_SP_MESH_PEERING_CLOSE) {
306 memcpy(pos, &reason, 2);
310 if (action != WLAN_SP_MESH_PEERING_CLOSE) {
311 if (mesh_add_ht_cap_ie(skb, sdata) ||
312 mesh_add_ht_oper_ie(skb, sdata))
316 if (mesh_add_vendor_ies(skb, sdata))
319 ieee80211_tx_skb(sdata, skb);
323 /* mesh_peer_init - initialize new mesh peer and return resulting sta_info
325 * @sdata: local meshif
326 * @addr: peer's address
327 * @elems: IEs from beacon or mesh peering frame
331 static struct sta_info *mesh_peer_init(struct ieee80211_sub_if_data *sdata,
333 struct ieee802_11_elems *elems)
335 struct ieee80211_local *local = sdata->local;
336 enum ieee80211_band band = local->oper_channel->band;
337 struct ieee80211_supported_band *sband;
338 u32 rates, basic_rates = 0;
339 struct sta_info *sta;
342 sband = local->hw.wiphy->bands[band];
343 rates = ieee80211_sta_get_rates(local, elems, band, &basic_rates);
345 sta = sta_info_get(sdata, addr);
347 /* Userspace handles peer allocation when security is enabled */
348 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_AUTHED) {
349 cfg80211_notify_new_peer_candidate(sdata->dev, addr,
356 sta = mesh_plink_alloc(sdata, addr);
362 spin_lock_bh(&sta->lock);
363 sta->last_rx = jiffies;
364 sta->sta.supp_rates[band] = rates;
365 if (elems->ht_cap_elem &&
366 sdata->local->_oper_channel_type != NL80211_CHAN_NO_HT)
367 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
371 memset(&sta->sta.ht_cap, 0, sizeof(sta->sta.ht_cap));
373 if (elems->ht_operation) {
374 if (!(elems->ht_operation->ht_param &
375 IEEE80211_HT_PARAM_CHAN_WIDTH_ANY))
376 sta->sta.ht_cap.cap &=
377 ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
379 ieee80211_ht_oper_to_channel_type(elems->ht_operation);
382 rate_control_rate_init(sta);
383 spin_unlock_bh(&sta->lock);
385 if (insert && sta_info_insert(sta))
391 void mesh_neighbour_update(struct ieee80211_sub_if_data *sdata,
393 struct ieee802_11_elems *elems)
395 struct sta_info *sta;
398 sta = mesh_peer_init(sdata, hw_addr, elems);
402 if (mesh_peer_accepts_plinks(elems) &&
403 sta->plink_state == NL80211_PLINK_LISTEN &&
404 sdata->u.mesh.accepting_plinks &&
405 sdata->u.mesh.mshcfg.auto_open_plinks &&
406 rssi_threshold_check(sta, sdata))
407 mesh_plink_open(sta);
413 static void mesh_plink_timer(unsigned long data)
415 struct sta_info *sta;
416 __le16 llid, plid, reason;
417 struct ieee80211_sub_if_data *sdata;
420 * This STA is valid because sta_info_destroy() will
421 * del_timer_sync() this timer after having made sure
422 * it cannot be readded (by deleting the plink.)
424 sta = (struct sta_info *) data;
426 if (sta->sdata->local->quiescing) {
427 sta->plink_timer_was_running = true;
431 spin_lock_bh(&sta->lock);
432 if (sta->ignore_plink_timer) {
433 sta->ignore_plink_timer = false;
434 spin_unlock_bh(&sta->lock);
438 "Mesh plink timer for %pM fired on state %d\n",
439 sta->sta.addr, sta->plink_state);
445 switch (sta->plink_state) {
446 case NL80211_PLINK_OPN_RCVD:
447 case NL80211_PLINK_OPN_SNT:
449 if (sta->plink_retries < dot11MeshMaxRetries(sdata)) {
452 "Mesh plink for %pM (retry, timeout): %d %d\n",
453 sta->sta.addr, sta->plink_retries,
455 get_random_bytes(&rand, sizeof(u32));
456 sta->plink_timeout = sta->plink_timeout +
457 rand % sta->plink_timeout;
458 ++sta->plink_retries;
459 mod_plink_timer(sta, sta->plink_timeout);
460 spin_unlock_bh(&sta->lock);
461 mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_OPEN,
462 sta->sta.addr, llid, 0, 0);
465 reason = cpu_to_le16(WLAN_REASON_MESH_MAX_RETRIES);
466 /* fall through on else */
467 case NL80211_PLINK_CNF_RCVD:
470 reason = cpu_to_le16(WLAN_REASON_MESH_CONFIRM_TIMEOUT);
471 sta->plink_state = NL80211_PLINK_HOLDING;
472 mod_plink_timer(sta, dot11MeshHoldingTimeout(sdata));
473 spin_unlock_bh(&sta->lock);
474 mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
475 sta->sta.addr, llid, plid, reason);
477 case NL80211_PLINK_HOLDING:
479 del_timer(&sta->plink_timer);
480 mesh_plink_fsm_restart(sta);
481 spin_unlock_bh(&sta->lock);
484 spin_unlock_bh(&sta->lock);
490 void mesh_plink_quiesce(struct sta_info *sta)
492 if (del_timer_sync(&sta->plink_timer))
493 sta->plink_timer_was_running = true;
496 void mesh_plink_restart(struct sta_info *sta)
498 if (sta->plink_timer_was_running) {
499 add_timer(&sta->plink_timer);
500 sta->plink_timer_was_running = false;
505 static inline void mesh_plink_timer_set(struct sta_info *sta, int timeout)
507 sta->plink_timer.expires = jiffies + (HZ * timeout / 1000);
508 sta->plink_timer.data = (unsigned long) sta;
509 sta->plink_timer.function = mesh_plink_timer;
510 sta->plink_timeout = timeout;
511 add_timer(&sta->plink_timer);
514 int mesh_plink_open(struct sta_info *sta)
517 struct ieee80211_sub_if_data *sdata = sta->sdata;
519 if (!test_sta_flag(sta, WLAN_STA_AUTH))
522 spin_lock_bh(&sta->lock);
523 get_random_bytes(&llid, 2);
525 if (sta->plink_state != NL80211_PLINK_LISTEN) {
526 spin_unlock_bh(&sta->lock);
529 sta->plink_state = NL80211_PLINK_OPN_SNT;
530 mesh_plink_timer_set(sta, dot11MeshRetryTimeout(sdata));
531 spin_unlock_bh(&sta->lock);
533 "Mesh plink: starting establishment with %pM\n",
536 return mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_OPEN,
537 sta->sta.addr, llid, 0, 0);
540 void mesh_plink_block(struct sta_info *sta)
542 struct ieee80211_sub_if_data *sdata = sta->sdata;
545 spin_lock_bh(&sta->lock);
546 deactivated = __mesh_plink_deactivate(sta);
547 sta->plink_state = NL80211_PLINK_BLOCKED;
548 spin_unlock_bh(&sta->lock);
551 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON);
555 void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_mgmt *mgmt,
556 size_t len, struct ieee80211_rx_status *rx_status)
558 struct ieee802_11_elems elems;
559 struct sta_info *sta;
560 enum plink_event event;
561 enum ieee80211_self_protected_actioncode ftype;
563 bool matches_local = true;
567 __le16 plid, llid, reason;
568 static const char *mplstates[] = {
569 [NL80211_PLINK_LISTEN] = "LISTEN",
570 [NL80211_PLINK_OPN_SNT] = "OPN-SNT",
571 [NL80211_PLINK_OPN_RCVD] = "OPN-RCVD",
572 [NL80211_PLINK_CNF_RCVD] = "CNF_RCVD",
573 [NL80211_PLINK_ESTAB] = "ESTAB",
574 [NL80211_PLINK_HOLDING] = "HOLDING",
575 [NL80211_PLINK_BLOCKED] = "BLOCKED"
578 /* need action_code, aux */
579 if (len < IEEE80211_MIN_ACTION_SIZE + 3)
582 if (is_multicast_ether_addr(mgmt->da)) {
584 "Mesh plink: ignore frame from multicast address\n");
588 baseaddr = mgmt->u.action.u.self_prot.variable;
589 baselen = (u8 *) mgmt->u.action.u.self_prot.variable - (u8 *) mgmt;
590 if (mgmt->u.action.u.self_prot.action_code ==
591 WLAN_SP_MESH_PEERING_CONFIRM) {
595 ieee802_11_parse_elems(baseaddr, len - baselen, &elems);
596 if (!elems.peering) {
598 "Mesh plink: missing necessary peer link ie\n");
602 sdata->u.mesh.security == IEEE80211_MESH_SEC_NONE) {
604 "Mesh plink: can't establish link with secure peer\n");
608 ftype = mgmt->u.action.u.self_prot.action_code;
609 ie_len = elems.peering_len;
610 if ((ftype == WLAN_SP_MESH_PEERING_OPEN && ie_len != 4) ||
611 (ftype == WLAN_SP_MESH_PEERING_CONFIRM && ie_len != 6) ||
612 (ftype == WLAN_SP_MESH_PEERING_CLOSE && ie_len != 6
615 "Mesh plink: incorrect plink ie length %d %d\n",
620 if (ftype != WLAN_SP_MESH_PEERING_CLOSE &&
621 (!elems.mesh_id || !elems.mesh_config)) {
622 mpl_dbg(sdata, "Mesh plink: missing necessary ie\n");
625 /* Note the lines below are correct, the llid in the frame is the plid
626 * from the point of view of this host.
628 memcpy(&plid, PLINK_GET_LLID(elems.peering), 2);
629 if (ftype == WLAN_SP_MESH_PEERING_CONFIRM ||
630 (ftype == WLAN_SP_MESH_PEERING_CLOSE && ie_len == 8))
631 memcpy(&llid, PLINK_GET_PLID(elems.peering), 2);
635 sta = sta_info_get(sdata, mgmt->sa);
636 if (!sta && ftype != WLAN_SP_MESH_PEERING_OPEN) {
637 mpl_dbg(sdata, "Mesh plink: cls or cnf from unknown peer\n");
642 if (ftype == WLAN_SP_MESH_PEERING_OPEN &&
643 !rssi_threshold_check(sta, sdata)) {
644 mpl_dbg(sdata, "Mesh plink: %pM does not meet rssi threshold\n",
650 if (sta && !test_sta_flag(sta, WLAN_STA_AUTH)) {
651 mpl_dbg(sdata, "Mesh plink: Action frame from non-authed peer\n");
656 if (sta && sta->plink_state == NL80211_PLINK_BLOCKED) {
661 /* Now we will figure out the appropriate event... */
662 event = PLINK_UNDEFINED;
663 if (ftype != WLAN_SP_MESH_PEERING_CLOSE &&
664 !mesh_matches_local(sdata, &elems)) {
665 matches_local = false;
667 case WLAN_SP_MESH_PEERING_OPEN:
670 case WLAN_SP_MESH_PEERING_CONFIRM:
678 if (!sta && !matches_local) {
680 reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG);
682 mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
683 mgmt->sa, llid, plid, reason);
686 /* ftype == WLAN_SP_MESH_PEERING_OPEN */
687 if (!mesh_plink_free_count(sdata)) {
688 mpl_dbg(sdata, "Mesh plink error: no more free plinks\n");
693 } else if (matches_local) {
695 case WLAN_SP_MESH_PEERING_OPEN:
696 if (!mesh_plink_free_count(sdata) ||
697 (sta->plid && sta->plid != plid))
702 case WLAN_SP_MESH_PEERING_CONFIRM:
703 if (!mesh_plink_free_count(sdata) ||
704 (sta->llid != llid || sta->plid != plid))
709 case WLAN_SP_MESH_PEERING_CLOSE:
710 if (sta->plink_state == NL80211_PLINK_ESTAB)
711 /* Do not check for llid or plid. This does not
712 * follow the standard but since multiple plinks
713 * per sta are not supported, it is necessary in
714 * order to avoid a livelock when MP A sees an
715 * establish peer link to MP B but MP B does not
716 * see it. This can be caused by a timeout in
717 * B's peer link establishment or B beign
721 else if (sta->plid != plid)
723 else if (ie_len == 7 && sta->llid != llid)
729 mpl_dbg(sdata, "Mesh plink: unknown frame subtype\n");
735 if (event == OPN_ACPT) {
736 /* allocate sta entry if necessary and update info */
737 sta = mesh_peer_init(sdata, mgmt->sa, &elems);
739 mpl_dbg(sdata, "Mesh plink: failed to init peer!\n");
746 "Mesh plink (peer, state, llid, plid, event): %pM %s %d %d %d\n",
747 mgmt->sa, mplstates[sta->plink_state],
748 le16_to_cpu(sta->llid), le16_to_cpu(sta->plid),
751 spin_lock_bh(&sta->lock);
752 switch (sta->plink_state) {
753 /* spin_unlock as soon as state is updated at each case */
754 case NL80211_PLINK_LISTEN:
757 mesh_plink_fsm_restart(sta);
758 spin_unlock_bh(&sta->lock);
761 sta->plink_state = NL80211_PLINK_OPN_RCVD;
763 get_random_bytes(&llid, 2);
765 mesh_plink_timer_set(sta, dot11MeshRetryTimeout(sdata));
766 spin_unlock_bh(&sta->lock);
767 mesh_plink_frame_tx(sdata,
768 WLAN_SP_MESH_PEERING_OPEN,
769 sta->sta.addr, llid, 0, 0);
770 mesh_plink_frame_tx(sdata,
771 WLAN_SP_MESH_PEERING_CONFIRM,
772 sta->sta.addr, llid, plid, 0);
775 spin_unlock_bh(&sta->lock);
780 case NL80211_PLINK_OPN_SNT:
784 reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG);
787 reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE);
788 sta->reason = reason;
789 sta->plink_state = NL80211_PLINK_HOLDING;
790 if (!mod_plink_timer(sta,
791 dot11MeshHoldingTimeout(sdata)))
792 sta->ignore_plink_timer = true;
795 spin_unlock_bh(&sta->lock);
796 mesh_plink_frame_tx(sdata,
797 WLAN_SP_MESH_PEERING_CLOSE,
798 sta->sta.addr, llid, plid, reason);
801 /* retry timer is left untouched */
802 sta->plink_state = NL80211_PLINK_OPN_RCVD;
805 spin_unlock_bh(&sta->lock);
806 mesh_plink_frame_tx(sdata,
807 WLAN_SP_MESH_PEERING_CONFIRM,
808 sta->sta.addr, llid, plid, 0);
811 sta->plink_state = NL80211_PLINK_CNF_RCVD;
812 if (!mod_plink_timer(sta,
813 dot11MeshConfirmTimeout(sdata)))
814 sta->ignore_plink_timer = true;
816 spin_unlock_bh(&sta->lock);
819 spin_unlock_bh(&sta->lock);
824 case NL80211_PLINK_OPN_RCVD:
828 reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG);
831 reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE);
832 sta->reason = reason;
833 sta->plink_state = NL80211_PLINK_HOLDING;
834 if (!mod_plink_timer(sta,
835 dot11MeshHoldingTimeout(sdata)))
836 sta->ignore_plink_timer = true;
839 spin_unlock_bh(&sta->lock);
840 mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
841 sta->sta.addr, llid, plid, reason);
845 spin_unlock_bh(&sta->lock);
846 mesh_plink_frame_tx(sdata,
847 WLAN_SP_MESH_PEERING_CONFIRM,
848 sta->sta.addr, llid, plid, 0);
851 del_timer(&sta->plink_timer);
852 sta->plink_state = NL80211_PLINK_ESTAB;
853 spin_unlock_bh(&sta->lock);
854 mesh_plink_inc_estab_count(sdata);
855 changed |= mesh_set_ht_prot_mode(sdata);
856 changed |= BSS_CHANGED_BEACON;
857 mpl_dbg(sdata, "Mesh plink with %pM ESTABLISHED\n",
861 spin_unlock_bh(&sta->lock);
866 case NL80211_PLINK_CNF_RCVD:
870 reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG);
873 reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE);
874 sta->reason = reason;
875 sta->plink_state = NL80211_PLINK_HOLDING;
876 if (!mod_plink_timer(sta,
877 dot11MeshHoldingTimeout(sdata)))
878 sta->ignore_plink_timer = true;
881 spin_unlock_bh(&sta->lock);
882 mesh_plink_frame_tx(sdata,
883 WLAN_SP_MESH_PEERING_CLOSE,
884 sta->sta.addr, llid, plid, reason);
887 del_timer(&sta->plink_timer);
888 sta->plink_state = NL80211_PLINK_ESTAB;
889 spin_unlock_bh(&sta->lock);
890 mesh_plink_inc_estab_count(sdata);
891 changed |= mesh_set_ht_prot_mode(sdata);
892 changed |= BSS_CHANGED_BEACON;
893 mpl_dbg(sdata, "Mesh plink with %pM ESTABLISHED\n",
895 mesh_plink_frame_tx(sdata,
896 WLAN_SP_MESH_PEERING_CONFIRM,
897 sta->sta.addr, llid, plid, 0);
900 spin_unlock_bh(&sta->lock);
905 case NL80211_PLINK_ESTAB:
908 reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE);
909 sta->reason = reason;
910 __mesh_plink_deactivate(sta);
911 sta->plink_state = NL80211_PLINK_HOLDING;
913 mod_plink_timer(sta, dot11MeshHoldingTimeout(sdata));
914 spin_unlock_bh(&sta->lock);
915 changed |= mesh_set_ht_prot_mode(sdata);
916 changed |= BSS_CHANGED_BEACON;
917 mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
918 sta->sta.addr, llid, plid, reason);
922 spin_unlock_bh(&sta->lock);
923 mesh_plink_frame_tx(sdata,
924 WLAN_SP_MESH_PEERING_CONFIRM,
925 sta->sta.addr, llid, plid, 0);
928 spin_unlock_bh(&sta->lock);
932 case NL80211_PLINK_HOLDING:
935 if (del_timer(&sta->plink_timer))
936 sta->ignore_plink_timer = 1;
937 mesh_plink_fsm_restart(sta);
938 spin_unlock_bh(&sta->lock);
945 reason = sta->reason;
946 spin_unlock_bh(&sta->lock);
947 mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
948 sta->sta.addr, llid, plid, reason);
951 spin_unlock_bh(&sta->lock);
955 /* should not get here, PLINK_BLOCKED is dealt with at the
956 * beginning of the function
958 spin_unlock_bh(&sta->lock);
965 ieee80211_bss_info_change_notify(sdata, changed);