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 #ifdef CONFIG_MAC80211_VERBOSE_MPL_DEBUG
17 #define mpl_dbg(fmt, args...) printk(KERN_DEBUG fmt, ##args)
19 #define mpl_dbg(fmt, args...) do { (void)(0); } while (0)
22 #define PLINK_GET_LLID(p) (p + 2)
23 #define PLINK_GET_PLID(p) (p + 4)
25 #define mod_plink_timer(s, t) (mod_timer(&s->plink_timer, \
26 jiffies + HZ * t / 1000))
28 #define dot11MeshMaxRetries(s) (s->u.mesh.mshcfg.dot11MeshMaxRetries)
29 #define dot11MeshRetryTimeout(s) (s->u.mesh.mshcfg.dot11MeshRetryTimeout)
30 #define dot11MeshConfirmTimeout(s) (s->u.mesh.mshcfg.dot11MeshConfirmTimeout)
31 #define dot11MeshHoldingTimeout(s) (s->u.mesh.mshcfg.dot11MeshHoldingTimeout)
32 #define dot11MeshMaxPeerLinks(s) (s->u.mesh.mshcfg.dot11MeshMaxPeerLinks)
34 /* We only need a valid sta if user configured a minimum rssi_threshold. */
35 #define rssi_threshold_check(sta, sdata) \
36 (sdata->u.mesh.mshcfg.rssi_threshold == 0 ||\
37 (sta && (s8) -ewma_read(&sta->avg_signal) > \
38 sdata->u.mesh.mshcfg.rssi_threshold))
52 static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata,
53 enum ieee80211_self_protected_actioncode action,
54 u8 *da, __le16 llid, __le16 plid, __le16 reason);
57 void mesh_plink_inc_estab_count(struct ieee80211_sub_if_data *sdata)
59 atomic_inc(&sdata->u.mesh.mshstats.estab_plinks);
60 mesh_accept_plinks_update(sdata);
64 void mesh_plink_dec_estab_count(struct ieee80211_sub_if_data *sdata)
66 atomic_dec(&sdata->u.mesh.mshstats.estab_plinks);
67 mesh_accept_plinks_update(sdata);
71 * mesh_plink_fsm_restart - restart a mesh peer link finite state machine
73 * @sta: mesh peer link to restart
75 * Locking: this function must be called holding sta->lock
77 static inline void mesh_plink_fsm_restart(struct sta_info *sta)
79 sta->plink_state = NL80211_PLINK_LISTEN;
80 sta->llid = sta->plid = sta->reason = 0;
81 sta->plink_retries = 0;
85 * NOTE: This is just an alias for sta_info_alloc(), see notes
86 * on it in the lifecycle management section!
88 static struct sta_info *mesh_plink_alloc(struct ieee80211_sub_if_data *sdata,
89 u8 *hw_addr, u32 rates,
90 struct ieee802_11_elems *elems)
92 struct ieee80211_local *local = sdata->local;
93 struct ieee80211_supported_band *sband;
96 sband = local->hw.wiphy->bands[local->oper_channel->band];
98 if (local->num_sta >= MESH_MAX_PLINKS)
101 sta = sta_info_alloc(sdata, hw_addr, GFP_KERNEL);
105 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
106 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
107 sta_info_pre_move_state(sta, IEEE80211_STA_AUTHORIZED);
109 set_sta_flag(sta, WLAN_STA_WME);
111 sta->sta.supp_rates[local->hw.conf.channel->band] = rates;
112 if (elems->ht_cap_elem)
113 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
116 rate_control_rate_init(sta);
122 * __mesh_plink_deactivate - deactivate mesh peer link
124 * @sta: mesh peer link to deactivate
126 * All mesh paths with this peer as next hop will be flushed
128 * Locking: the caller must hold sta->lock
130 static bool __mesh_plink_deactivate(struct sta_info *sta)
132 struct ieee80211_sub_if_data *sdata = sta->sdata;
133 bool deactivated = false;
135 if (sta->plink_state == NL80211_PLINK_ESTAB) {
136 mesh_plink_dec_estab_count(sdata);
139 sta->plink_state = NL80211_PLINK_BLOCKED;
140 mesh_path_flush_by_nexthop(sta);
146 * mesh_plink_deactivate - deactivate mesh peer link
148 * @sta: mesh peer link to deactivate
150 * All mesh paths with this peer as next hop will be flushed
152 void mesh_plink_deactivate(struct sta_info *sta)
154 struct ieee80211_sub_if_data *sdata = sta->sdata;
157 spin_lock_bh(&sta->lock);
158 deactivated = __mesh_plink_deactivate(sta);
159 sta->reason = cpu_to_le16(WLAN_REASON_MESH_PEER_CANCELED);
160 mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
161 sta->sta.addr, sta->llid, sta->plid,
163 spin_unlock_bh(&sta->lock);
166 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON);
169 static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata,
170 enum ieee80211_self_protected_actioncode action,
171 u8 *da, __le16 llid, __le16 plid, __le16 reason) {
172 struct ieee80211_local *local = sdata->local;
174 struct ieee80211_mgmt *mgmt;
175 bool include_plid = false;
176 u16 peering_proto = 0;
178 int hdr_len = offsetof(struct ieee80211_mgmt, u.action.u.self_prot) +
179 sizeof(mgmt->u.action.u.self_prot);
181 skb = dev_alloc_skb(local->tx_headroom +
183 2 + /* capability info */
185 2 + 8 + /* supported rates */
186 2 + (IEEE80211_MAX_SUPP_RATES - 8) +
187 2 + sdata->u.mesh.mesh_id_len +
188 2 + sizeof(struct ieee80211_meshconf_ie) +
189 2 + sizeof(struct ieee80211_ht_cap) +
190 2 + sizeof(struct ieee80211_ht_operation) +
191 2 + 8 + /* peering IE */
192 sdata->u.mesh.ie_len);
195 skb_reserve(skb, local->tx_headroom);
196 mgmt = (struct ieee80211_mgmt *) skb_put(skb, hdr_len);
197 memset(mgmt, 0, hdr_len);
198 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
199 IEEE80211_STYPE_ACTION);
200 memcpy(mgmt->da, da, ETH_ALEN);
201 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
202 memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
203 mgmt->u.action.category = WLAN_CATEGORY_SELF_PROTECTED;
204 mgmt->u.action.u.self_prot.action_code = action;
206 if (action != WLAN_SP_MESH_PEERING_CLOSE) {
207 /* capability info */
208 pos = skb_put(skb, 2);
210 if (action == WLAN_SP_MESH_PEERING_CONFIRM) {
212 pos = skb_put(skb, 2);
213 memcpy(pos + 2, &plid, 2);
215 if (ieee80211_add_srates_ie(&sdata->vif, skb, true) ||
216 ieee80211_add_ext_srates_ie(&sdata->vif, skb, true) ||
217 mesh_add_rsn_ie(skb, sdata) ||
218 mesh_add_meshid_ie(skb, sdata) ||
219 mesh_add_meshconf_ie(skb, sdata))
221 } else { /* WLAN_SP_MESH_PEERING_CLOSE */
222 if (mesh_add_meshid_ie(skb, sdata))
226 /* Add Mesh Peering Management element */
228 case WLAN_SP_MESH_PEERING_OPEN:
230 case WLAN_SP_MESH_PEERING_CONFIRM:
234 case WLAN_SP_MESH_PEERING_CLOSE:
239 ie_len += 2; /* reason code */
245 if (WARN_ON(skb_tailroom(skb) < 2 + ie_len))
248 pos = skb_put(skb, 2 + ie_len);
249 *pos++ = WLAN_EID_PEER_MGMT;
251 memcpy(pos, &peering_proto, 2);
253 memcpy(pos, &llid, 2);
256 memcpy(pos, &plid, 2);
259 if (action == WLAN_SP_MESH_PEERING_CLOSE) {
260 memcpy(pos, &reason, 2);
264 if (action != WLAN_SP_MESH_PEERING_CLOSE) {
265 if (mesh_add_ht_cap_ie(skb, sdata) ||
266 mesh_add_ht_oper_ie(skb, sdata))
270 if (mesh_add_vendor_ies(skb, sdata))
273 ieee80211_tx_skb(sdata, skb);
277 void mesh_neighbour_update(u8 *hw_addr, u32 rates,
278 struct ieee80211_sub_if_data *sdata,
279 struct ieee802_11_elems *elems)
281 struct ieee80211_local *local = sdata->local;
282 struct sta_info *sta;
286 sta = sta_info_get(sdata, hw_addr);
289 /* Userspace handles peer allocation when security is enabled
291 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_AUTHED)
292 cfg80211_notify_new_peer_candidate(sdata->dev, hw_addr,
293 elems->ie_start, elems->total_len,
296 sta = mesh_plink_alloc(sdata, hw_addr, rates, elems);
299 if (sta_info_insert_rcu(sta)) {
305 sta->last_rx = jiffies;
306 sta->sta.supp_rates[local->hw.conf.channel->band] = rates;
307 if (mesh_peer_accepts_plinks(elems) &&
308 sta->plink_state == NL80211_PLINK_LISTEN &&
309 sdata->u.mesh.accepting_plinks &&
310 sdata->u.mesh.mshcfg.auto_open_plinks &&
311 rssi_threshold_check(sta, sdata))
312 mesh_plink_open(sta);
317 static void mesh_plink_timer(unsigned long data)
319 struct sta_info *sta;
320 __le16 llid, plid, reason;
321 struct ieee80211_sub_if_data *sdata;
324 * This STA is valid because sta_info_destroy() will
325 * del_timer_sync() this timer after having made sure
326 * it cannot be readded (by deleting the plink.)
328 sta = (struct sta_info *) data;
330 if (sta->sdata->local->quiescing) {
331 sta->plink_timer_was_running = true;
335 spin_lock_bh(&sta->lock);
336 if (sta->ignore_plink_timer) {
337 sta->ignore_plink_timer = false;
338 spin_unlock_bh(&sta->lock);
341 mpl_dbg("Mesh plink timer for %pM fired on state %d\n",
342 sta->sta.addr, sta->plink_state);
348 switch (sta->plink_state) {
349 case NL80211_PLINK_OPN_RCVD:
350 case NL80211_PLINK_OPN_SNT:
352 if (sta->plink_retries < dot11MeshMaxRetries(sdata)) {
354 mpl_dbg("Mesh plink for %pM (retry, timeout): %d %d\n",
355 sta->sta.addr, sta->plink_retries,
357 get_random_bytes(&rand, sizeof(u32));
358 sta->plink_timeout = sta->plink_timeout +
359 rand % sta->plink_timeout;
360 ++sta->plink_retries;
361 mod_plink_timer(sta, sta->plink_timeout);
362 spin_unlock_bh(&sta->lock);
363 mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_OPEN,
364 sta->sta.addr, llid, 0, 0);
367 reason = cpu_to_le16(WLAN_REASON_MESH_MAX_RETRIES);
368 /* fall through on else */
369 case NL80211_PLINK_CNF_RCVD:
372 reason = cpu_to_le16(WLAN_REASON_MESH_CONFIRM_TIMEOUT);
373 sta->plink_state = NL80211_PLINK_HOLDING;
374 mod_plink_timer(sta, dot11MeshHoldingTimeout(sdata));
375 spin_unlock_bh(&sta->lock);
376 mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
377 sta->sta.addr, llid, plid, reason);
379 case NL80211_PLINK_HOLDING:
381 del_timer(&sta->plink_timer);
382 mesh_plink_fsm_restart(sta);
383 spin_unlock_bh(&sta->lock);
386 spin_unlock_bh(&sta->lock);
392 void mesh_plink_quiesce(struct sta_info *sta)
394 if (del_timer_sync(&sta->plink_timer))
395 sta->plink_timer_was_running = true;
398 void mesh_plink_restart(struct sta_info *sta)
400 if (sta->plink_timer_was_running) {
401 add_timer(&sta->plink_timer);
402 sta->plink_timer_was_running = false;
407 static inline void mesh_plink_timer_set(struct sta_info *sta, int timeout)
409 sta->plink_timer.expires = jiffies + (HZ * timeout / 1000);
410 sta->plink_timer.data = (unsigned long) sta;
411 sta->plink_timer.function = mesh_plink_timer;
412 sta->plink_timeout = timeout;
413 add_timer(&sta->plink_timer);
416 int mesh_plink_open(struct sta_info *sta)
419 struct ieee80211_sub_if_data *sdata = sta->sdata;
421 if (!test_sta_flag(sta, WLAN_STA_AUTH))
424 spin_lock_bh(&sta->lock);
425 get_random_bytes(&llid, 2);
427 if (sta->plink_state != NL80211_PLINK_LISTEN) {
428 spin_unlock_bh(&sta->lock);
431 sta->plink_state = NL80211_PLINK_OPN_SNT;
432 mesh_plink_timer_set(sta, dot11MeshRetryTimeout(sdata));
433 spin_unlock_bh(&sta->lock);
434 mpl_dbg("Mesh plink: starting establishment with %pM\n",
437 return mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_OPEN,
438 sta->sta.addr, llid, 0, 0);
441 void mesh_plink_block(struct sta_info *sta)
443 struct ieee80211_sub_if_data *sdata = sta->sdata;
446 spin_lock_bh(&sta->lock);
447 deactivated = __mesh_plink_deactivate(sta);
448 sta->plink_state = NL80211_PLINK_BLOCKED;
449 spin_unlock_bh(&sta->lock);
452 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON);
456 void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_mgmt *mgmt,
457 size_t len, struct ieee80211_rx_status *rx_status)
459 struct ieee80211_local *local = sdata->local;
460 struct ieee802_11_elems elems;
461 struct sta_info *sta;
462 enum plink_event event;
463 enum ieee80211_self_protected_actioncode ftype;
465 bool deactivated, matches_local = true;
468 u32 rates, basic_rates = 0;
469 __le16 plid, llid, reason;
470 #ifdef CONFIG_MAC80211_VERBOSE_MPL_DEBUG
471 static const char *mplstates[] = {
472 [NL80211_PLINK_LISTEN] = "LISTEN",
473 [NL80211_PLINK_OPN_SNT] = "OPN-SNT",
474 [NL80211_PLINK_OPN_RCVD] = "OPN-RCVD",
475 [NL80211_PLINK_CNF_RCVD] = "CNF_RCVD",
476 [NL80211_PLINK_ESTAB] = "ESTAB",
477 [NL80211_PLINK_HOLDING] = "HOLDING",
478 [NL80211_PLINK_BLOCKED] = "BLOCKED"
482 /* need action_code, aux */
483 if (len < IEEE80211_MIN_ACTION_SIZE + 3)
486 if (is_multicast_ether_addr(mgmt->da)) {
487 mpl_dbg("Mesh plink: ignore frame from multicast address");
491 baseaddr = mgmt->u.action.u.self_prot.variable;
492 baselen = (u8 *) mgmt->u.action.u.self_prot.variable - (u8 *) mgmt;
493 if (mgmt->u.action.u.self_prot.action_code ==
494 WLAN_SP_MESH_PEERING_CONFIRM) {
498 ieee802_11_parse_elems(baseaddr, len - baselen, &elems);
499 if (!elems.peering) {
500 mpl_dbg("Mesh plink: missing necessary peer link ie\n");
504 sdata->u.mesh.security == IEEE80211_MESH_SEC_NONE) {
505 mpl_dbg("Mesh plink: can't establish link with secure peer\n");
509 ftype = mgmt->u.action.u.self_prot.action_code;
510 ie_len = elems.peering_len;
511 if ((ftype == WLAN_SP_MESH_PEERING_OPEN && ie_len != 4) ||
512 (ftype == WLAN_SP_MESH_PEERING_CONFIRM && ie_len != 6) ||
513 (ftype == WLAN_SP_MESH_PEERING_CLOSE && ie_len != 6
515 mpl_dbg("Mesh plink: incorrect plink ie length %d %d\n",
520 if (ftype != WLAN_SP_MESH_PEERING_CLOSE &&
521 (!elems.mesh_id || !elems.mesh_config)) {
522 mpl_dbg("Mesh plink: missing necessary ie\n");
525 /* Note the lines below are correct, the llid in the frame is the plid
526 * from the point of view of this host.
528 memcpy(&plid, PLINK_GET_LLID(elems.peering), 2);
529 if (ftype == WLAN_SP_MESH_PEERING_CONFIRM ||
530 (ftype == WLAN_SP_MESH_PEERING_CLOSE && ie_len == 8))
531 memcpy(&llid, PLINK_GET_PLID(elems.peering), 2);
535 sta = sta_info_get(sdata, mgmt->sa);
536 if (!sta && ftype != WLAN_SP_MESH_PEERING_OPEN) {
537 mpl_dbg("Mesh plink: cls or cnf from unknown peer\n");
542 if (ftype == WLAN_SP_MESH_PEERING_OPEN &&
543 !rssi_threshold_check(sta, sdata)) {
544 mpl_dbg("Mesh plink: %pM does not meet rssi threshold\n",
550 if (sta && !test_sta_flag(sta, WLAN_STA_AUTH)) {
551 mpl_dbg("Mesh plink: Action frame from non-authed peer\n");
556 if (sta && sta->plink_state == NL80211_PLINK_BLOCKED) {
561 /* Now we will figure out the appropriate event... */
562 event = PLINK_UNDEFINED;
563 rates = ieee80211_sta_get_rates(local, &elems,
564 rx_status->band, &basic_rates);
566 if (ftype != WLAN_SP_MESH_PEERING_CLOSE &&
567 (!mesh_matches_local(&elems, sdata))) {
568 matches_local = false;
570 case WLAN_SP_MESH_PEERING_OPEN:
573 case WLAN_SP_MESH_PEERING_CONFIRM:
581 if (!sta && !matches_local) {
583 reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG);
585 mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
586 mgmt->sa, llid, plid, reason);
589 /* ftype == WLAN_SP_MESH_PEERING_OPEN */
593 if (!mesh_plink_free_count(sdata)) {
594 mpl_dbg("Mesh plink error: no more free plinks\n");
597 sta = mesh_plink_alloc(sdata, mgmt->sa, rates, &elems);
599 mpl_dbg("Mesh plink error: plink table full\n");
602 if (sta_info_insert_rcu(sta)) {
607 spin_lock_bh(&sta->lock);
608 } else if (matches_local) {
609 spin_lock_bh(&sta->lock);
611 case WLAN_SP_MESH_PEERING_OPEN:
612 if (!mesh_plink_free_count(sdata) ||
613 (sta->plid && sta->plid != plid))
618 case WLAN_SP_MESH_PEERING_CONFIRM:
619 if (!mesh_plink_free_count(sdata) ||
620 (sta->llid != llid || sta->plid != plid))
625 case WLAN_SP_MESH_PEERING_CLOSE:
626 if (sta->plink_state == NL80211_PLINK_ESTAB)
627 /* Do not check for llid or plid. This does not
628 * follow the standard but since multiple plinks
629 * per sta are not supported, it is necessary in
630 * order to avoid a livelock when MP A sees an
631 * establish peer link to MP B but MP B does not
632 * see it. This can be caused by a timeout in
633 * B's peer link establishment or B beign
637 else if (sta->plid != plid)
639 else if (ie_len == 7 && sta->llid != llid)
645 mpl_dbg("Mesh plink: unknown frame subtype\n");
646 spin_unlock_bh(&sta->lock);
651 spin_lock_bh(&sta->lock);
654 mpl_dbg("Mesh plink (peer, state, llid, plid, event): %pM %s %d %d %d\n",
655 mgmt->sa, mplstates[sta->plink_state],
656 le16_to_cpu(sta->llid), le16_to_cpu(sta->plid),
659 switch (sta->plink_state) {
660 /* spin_unlock as soon as state is updated at each case */
661 case NL80211_PLINK_LISTEN:
664 mesh_plink_fsm_restart(sta);
665 spin_unlock_bh(&sta->lock);
668 sta->plink_state = NL80211_PLINK_OPN_RCVD;
670 get_random_bytes(&llid, 2);
672 mesh_plink_timer_set(sta, dot11MeshRetryTimeout(sdata));
673 spin_unlock_bh(&sta->lock);
674 mesh_plink_frame_tx(sdata,
675 WLAN_SP_MESH_PEERING_OPEN,
676 sta->sta.addr, llid, 0, 0);
677 mesh_plink_frame_tx(sdata,
678 WLAN_SP_MESH_PEERING_CONFIRM,
679 sta->sta.addr, llid, plid, 0);
682 spin_unlock_bh(&sta->lock);
687 case NL80211_PLINK_OPN_SNT:
691 reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG);
694 reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE);
695 sta->reason = reason;
696 sta->plink_state = NL80211_PLINK_HOLDING;
697 if (!mod_plink_timer(sta,
698 dot11MeshHoldingTimeout(sdata)))
699 sta->ignore_plink_timer = true;
702 spin_unlock_bh(&sta->lock);
703 mesh_plink_frame_tx(sdata,
704 WLAN_SP_MESH_PEERING_CLOSE,
705 sta->sta.addr, llid, plid, reason);
708 /* retry timer is left untouched */
709 sta->plink_state = NL80211_PLINK_OPN_RCVD;
712 spin_unlock_bh(&sta->lock);
713 mesh_plink_frame_tx(sdata,
714 WLAN_SP_MESH_PEERING_CONFIRM,
715 sta->sta.addr, llid, plid, 0);
718 sta->plink_state = NL80211_PLINK_CNF_RCVD;
719 if (!mod_plink_timer(sta,
720 dot11MeshConfirmTimeout(sdata)))
721 sta->ignore_plink_timer = true;
723 spin_unlock_bh(&sta->lock);
726 spin_unlock_bh(&sta->lock);
731 case NL80211_PLINK_OPN_RCVD:
735 reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG);
738 reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE);
739 sta->reason = reason;
740 sta->plink_state = NL80211_PLINK_HOLDING;
741 if (!mod_plink_timer(sta,
742 dot11MeshHoldingTimeout(sdata)))
743 sta->ignore_plink_timer = true;
746 spin_unlock_bh(&sta->lock);
747 mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
748 sta->sta.addr, llid, plid, reason);
752 spin_unlock_bh(&sta->lock);
753 mesh_plink_frame_tx(sdata,
754 WLAN_SP_MESH_PEERING_CONFIRM,
755 sta->sta.addr, llid, plid, 0);
758 del_timer(&sta->plink_timer);
759 sta->plink_state = NL80211_PLINK_ESTAB;
760 spin_unlock_bh(&sta->lock);
761 mesh_plink_inc_estab_count(sdata);
762 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON);
763 mpl_dbg("Mesh plink with %pM ESTABLISHED\n",
767 spin_unlock_bh(&sta->lock);
772 case NL80211_PLINK_CNF_RCVD:
776 reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG);
779 reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE);
780 sta->reason = reason;
781 sta->plink_state = NL80211_PLINK_HOLDING;
782 if (!mod_plink_timer(sta,
783 dot11MeshHoldingTimeout(sdata)))
784 sta->ignore_plink_timer = true;
787 spin_unlock_bh(&sta->lock);
788 mesh_plink_frame_tx(sdata,
789 WLAN_SP_MESH_PEERING_CLOSE,
790 sta->sta.addr, llid, plid, reason);
793 del_timer(&sta->plink_timer);
794 sta->plink_state = NL80211_PLINK_ESTAB;
795 spin_unlock_bh(&sta->lock);
796 mesh_plink_inc_estab_count(sdata);
797 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON);
798 mpl_dbg("Mesh plink with %pM ESTABLISHED\n",
800 mesh_plink_frame_tx(sdata,
801 WLAN_SP_MESH_PEERING_CONFIRM,
802 sta->sta.addr, llid, plid, 0);
805 spin_unlock_bh(&sta->lock);
810 case NL80211_PLINK_ESTAB:
813 reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE);
814 sta->reason = reason;
815 deactivated = __mesh_plink_deactivate(sta);
816 sta->plink_state = NL80211_PLINK_HOLDING;
818 mod_plink_timer(sta, dot11MeshHoldingTimeout(sdata));
819 spin_unlock_bh(&sta->lock);
821 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON);
822 mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
823 sta->sta.addr, llid, plid, reason);
827 spin_unlock_bh(&sta->lock);
828 mesh_plink_frame_tx(sdata,
829 WLAN_SP_MESH_PEERING_CONFIRM,
830 sta->sta.addr, llid, plid, 0);
833 spin_unlock_bh(&sta->lock);
837 case NL80211_PLINK_HOLDING:
840 if (del_timer(&sta->plink_timer))
841 sta->ignore_plink_timer = 1;
842 mesh_plink_fsm_restart(sta);
843 spin_unlock_bh(&sta->lock);
850 reason = sta->reason;
851 spin_unlock_bh(&sta->lock);
852 mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
853 sta->sta.addr, llid, plid, reason);
856 spin_unlock_bh(&sta->lock);
860 /* should not get here, PLINK_BLOCKED is dealt with at the
861 * beginning of the function
863 spin_unlock_bh(&sta->lock);