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 /* We only need a valid sta if user configured a minimum rssi_threshold. */
23 #define rssi_threshold_check(sta, sdata) \
24 (sdata->u.mesh.mshcfg.rssi_threshold == 0 ||\
25 (sta && (s8) -ewma_read(&sta->avg_signal) > \
26 sdata->u.mesh.mshcfg.rssi_threshold))
40 static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata,
41 enum ieee80211_self_protected_actioncode action,
42 u8 *da, __le16 llid, __le16 plid, __le16 reason);
45 u32 mesh_plink_inc_estab_count(struct ieee80211_sub_if_data *sdata)
47 atomic_inc(&sdata->u.mesh.estab_plinks);
48 return mesh_accept_plinks_update(sdata);
52 u32 mesh_plink_dec_estab_count(struct ieee80211_sub_if_data *sdata)
54 atomic_dec(&sdata->u.mesh.estab_plinks);
55 return mesh_accept_plinks_update(sdata);
59 * mesh_plink_fsm_restart - restart a mesh peer link finite state machine
61 * @sta: mesh peer link to restart
63 * Locking: this function must be called holding sta->lock
65 static inline void mesh_plink_fsm_restart(struct sta_info *sta)
67 sta->plink_state = NL80211_PLINK_LISTEN;
68 sta->llid = sta->plid = sta->reason = 0;
69 sta->plink_retries = 0;
73 * Allocate mesh sta entry and insert into station table
75 static struct sta_info *mesh_plink_alloc(struct ieee80211_sub_if_data *sdata,
80 if (sdata->local->num_sta >= MESH_MAX_PLINKS)
83 sta = sta_info_alloc(sdata, hw_addr, GFP_KERNEL);
87 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
88 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
89 sta_info_pre_move_state(sta, IEEE80211_STA_AUTHORIZED);
91 set_sta_flag(sta, WLAN_STA_WME);
97 * mesh_set_ht_prot_mode - set correct HT protection mode
99 * Section 9.23.3.5 of IEEE 80211-2012 describes the protection rules for HT
100 * mesh STA in a MBSS. Three HT protection modes are supported for now, non-HT
101 * mixed mode, 20MHz-protection and no-protection mode. non-HT mixed mode is
102 * selected if any non-HT peers are present in our MBSS. 20MHz-protection mode
103 * is selected if all peers in our 20/40MHz MBSS support HT and atleast one
104 * HT20 peer is present. Otherwise no-protection mode is selected.
106 static u32 mesh_set_ht_prot_mode(struct ieee80211_sub_if_data *sdata)
108 struct ieee80211_local *local = sdata->local;
109 struct sta_info *sta;
112 bool non_ht_sta = false, ht20_sta = false;
114 if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
118 list_for_each_entry_rcu(sta, &local->sta_list, list) {
119 if (sdata != sta->sdata ||
120 sta->plink_state != NL80211_PLINK_ESTAB)
123 switch (sta->ch_width) {
124 case NL80211_CHAN_WIDTH_20_NOHT:
126 "mesh_plink %pM: nonHT sta (%pM) is present\n",
127 sdata->vif.addr, sta->sta.addr);
130 case NL80211_CHAN_WIDTH_20:
132 "mesh_plink %pM: HT20 sta (%pM) is present\n",
133 sdata->vif.addr, sta->sta.addr);
143 ht_opmode = IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED;
145 sdata->vif.bss_conf.chandef.width > NL80211_CHAN_WIDTH_20)
146 ht_opmode = IEEE80211_HT_OP_MODE_PROTECTION_20MHZ;
148 ht_opmode = IEEE80211_HT_OP_MODE_PROTECTION_NONE;
150 if (sdata->vif.bss_conf.ht_operation_mode != ht_opmode) {
151 sdata->vif.bss_conf.ht_operation_mode = ht_opmode;
152 sdata->u.mesh.mshcfg.ht_opmode = ht_opmode;
153 changed = BSS_CHANGED_HT;
155 "mesh_plink %pM: protection mode changed to %d\n",
156 sdata->vif.addr, ht_opmode);
163 * __mesh_plink_deactivate - deactivate mesh peer link
165 * @sta: mesh peer link to deactivate
167 * All mesh paths with this peer as next hop will be flushed
168 * Returns beacon changed flag if the beacon content changed.
170 * Locking: the caller must hold sta->lock
172 static u32 __mesh_plink_deactivate(struct sta_info *sta)
174 struct ieee80211_sub_if_data *sdata = sta->sdata;
177 if (sta->plink_state == NL80211_PLINK_ESTAB)
178 changed = mesh_plink_dec_estab_count(sdata);
179 sta->plink_state = NL80211_PLINK_BLOCKED;
180 mesh_path_flush_by_nexthop(sta);
186 * mesh_plink_deactivate - deactivate mesh peer link
188 * @sta: mesh peer link to deactivate
190 * All mesh paths with this peer as next hop will be flushed
192 void mesh_plink_deactivate(struct sta_info *sta)
194 struct ieee80211_sub_if_data *sdata = sta->sdata;
197 spin_lock_bh(&sta->lock);
198 changed = __mesh_plink_deactivate(sta);
199 sta->reason = cpu_to_le16(WLAN_REASON_MESH_PEER_CANCELED);
200 mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
201 sta->sta.addr, sta->llid, sta->plid,
203 spin_unlock_bh(&sta->lock);
205 ieee80211_bss_info_change_notify(sdata, changed);
208 static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata,
209 enum ieee80211_self_protected_actioncode action,
210 u8 *da, __le16 llid, __le16 plid, __le16 reason) {
211 struct ieee80211_local *local = sdata->local;
213 struct ieee80211_tx_info *info;
214 struct ieee80211_mgmt *mgmt;
215 bool include_plid = false;
216 u16 peering_proto = 0;
218 int hdr_len = offsetof(struct ieee80211_mgmt, u.action.u.self_prot) +
219 sizeof(mgmt->u.action.u.self_prot);
222 skb = dev_alloc_skb(local->tx_headroom +
224 2 + /* capability info */
226 2 + 8 + /* supported rates */
227 2 + (IEEE80211_MAX_SUPP_RATES - 8) +
228 2 + sdata->u.mesh.mesh_id_len +
229 2 + sizeof(struct ieee80211_meshconf_ie) +
230 2 + sizeof(struct ieee80211_ht_cap) +
231 2 + sizeof(struct ieee80211_ht_operation) +
232 2 + 8 + /* peering IE */
233 sdata->u.mesh.ie_len);
236 info = IEEE80211_SKB_CB(skb);
237 skb_reserve(skb, local->tx_headroom);
238 mgmt = (struct ieee80211_mgmt *) skb_put(skb, hdr_len);
239 memset(mgmt, 0, hdr_len);
240 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
241 IEEE80211_STYPE_ACTION);
242 memcpy(mgmt->da, da, ETH_ALEN);
243 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
244 memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
245 mgmt->u.action.category = WLAN_CATEGORY_SELF_PROTECTED;
246 mgmt->u.action.u.self_prot.action_code = action;
248 if (action != WLAN_SP_MESH_PEERING_CLOSE) {
249 enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
251 /* capability info */
252 pos = skb_put(skb, 2);
254 if (action == WLAN_SP_MESH_PEERING_CONFIRM) {
256 pos = skb_put(skb, 2);
257 memcpy(pos + 2, &plid, 2);
259 if (ieee80211_add_srates_ie(sdata, skb, true, band) ||
260 ieee80211_add_ext_srates_ie(sdata, skb, true, band) ||
261 mesh_add_rsn_ie(skb, sdata) ||
262 mesh_add_meshid_ie(skb, sdata) ||
263 mesh_add_meshconf_ie(skb, sdata))
265 } else { /* WLAN_SP_MESH_PEERING_CLOSE */
266 info->flags |= IEEE80211_TX_CTL_NO_ACK;
267 if (mesh_add_meshid_ie(skb, sdata))
271 /* Add Mesh Peering Management element */
273 case WLAN_SP_MESH_PEERING_OPEN:
275 case WLAN_SP_MESH_PEERING_CONFIRM:
279 case WLAN_SP_MESH_PEERING_CLOSE:
284 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);
327 * mesh_peer_init - initialize new mesh peer and return resulting sta_info
329 * @sdata: local meshif
330 * @addr: peer's address
331 * @elems: IEs from beacon or mesh peering frame
335 static struct sta_info *mesh_peer_init(struct ieee80211_sub_if_data *sdata,
337 struct ieee802_11_elems *elems)
339 struct ieee80211_local *local = sdata->local;
340 enum ieee80211_band band = ieee80211_get_sdata_band(sdata);
341 struct ieee80211_supported_band *sband;
342 u32 rates, basic_rates = 0;
343 struct sta_info *sta;
346 sband = local->hw.wiphy->bands[band];
347 rates = ieee80211_sta_get_rates(local, elems, band, &basic_rates);
349 sta = sta_info_get(sdata, addr);
351 /* Userspace handles peer allocation when security is enabled */
352 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_AUTHED) {
353 cfg80211_notify_new_peer_candidate(sdata->dev, addr,
360 sta = mesh_plink_alloc(sdata, addr);
366 spin_lock_bh(&sta->lock);
367 sta->last_rx = jiffies;
368 if (sta->plink_state == NL80211_PLINK_ESTAB) {
369 spin_unlock_bh(&sta->lock);
373 sta->sta.supp_rates[band] = rates;
374 if (elems->ht_cap_elem &&
375 sdata->vif.bss_conf.chandef.width != NL80211_CHAN_WIDTH_20_NOHT)
376 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
380 memset(&sta->sta.ht_cap, 0, sizeof(sta->sta.ht_cap));
382 if (elems->ht_operation) {
383 struct cfg80211_chan_def chandef;
385 if (!(elems->ht_operation->ht_param &
386 IEEE80211_HT_PARAM_CHAN_WIDTH_ANY))
387 sta->sta.ht_cap.cap &=
388 ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
389 ieee80211_ht_oper_to_chandef(sdata->vif.bss_conf.chandef.chan,
390 elems->ht_operation, &chandef);
391 sta->ch_width = chandef.width;
395 rate_control_rate_init(sta);
396 spin_unlock_bh(&sta->lock);
398 if (insert && sta_info_insert(sta))
404 void mesh_neighbour_update(struct ieee80211_sub_if_data *sdata,
406 struct ieee802_11_elems *elems)
408 struct sta_info *sta;
411 sta = mesh_peer_init(sdata, hw_addr, elems);
415 if (mesh_peer_accepts_plinks(elems) &&
416 sta->plink_state == NL80211_PLINK_LISTEN &&
417 sdata->u.mesh.accepting_plinks &&
418 sdata->u.mesh.mshcfg.auto_open_plinks &&
419 rssi_threshold_check(sta, sdata))
420 mesh_plink_open(sta);
426 static void mesh_plink_timer(unsigned long data)
428 struct sta_info *sta;
429 __le16 llid, plid, reason;
430 struct ieee80211_sub_if_data *sdata;
431 struct mesh_config *mshcfg;
434 * This STA is valid because sta_info_destroy() will
435 * del_timer_sync() this timer after having made sure
436 * it cannot be readded (by deleting the plink.)
438 sta = (struct sta_info *) data;
440 if (sta->sdata->local->quiescing) {
441 sta->plink_timer_was_running = true;
445 spin_lock_bh(&sta->lock);
446 if (sta->ignore_plink_timer) {
447 sta->ignore_plink_timer = false;
448 spin_unlock_bh(&sta->lock);
452 "Mesh plink timer for %pM fired on state %d\n",
453 sta->sta.addr, sta->plink_state);
458 mshcfg = &sdata->u.mesh.mshcfg;
460 switch (sta->plink_state) {
461 case NL80211_PLINK_OPN_RCVD:
462 case NL80211_PLINK_OPN_SNT:
464 if (sta->plink_retries < mshcfg->dot11MeshMaxRetries) {
467 "Mesh plink for %pM (retry, timeout): %d %d\n",
468 sta->sta.addr, sta->plink_retries,
470 get_random_bytes(&rand, sizeof(u32));
471 sta->plink_timeout = sta->plink_timeout +
472 rand % sta->plink_timeout;
473 ++sta->plink_retries;
474 mod_plink_timer(sta, sta->plink_timeout);
475 spin_unlock_bh(&sta->lock);
476 mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_OPEN,
477 sta->sta.addr, llid, 0, 0);
480 reason = cpu_to_le16(WLAN_REASON_MESH_MAX_RETRIES);
481 /* fall through on else */
482 case NL80211_PLINK_CNF_RCVD:
485 reason = cpu_to_le16(WLAN_REASON_MESH_CONFIRM_TIMEOUT);
486 sta->plink_state = NL80211_PLINK_HOLDING;
487 mod_plink_timer(sta, mshcfg->dot11MeshHoldingTimeout);
488 spin_unlock_bh(&sta->lock);
489 mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
490 sta->sta.addr, llid, plid, reason);
492 case NL80211_PLINK_HOLDING:
494 del_timer(&sta->plink_timer);
495 mesh_plink_fsm_restart(sta);
496 spin_unlock_bh(&sta->lock);
499 spin_unlock_bh(&sta->lock);
505 void mesh_plink_quiesce(struct sta_info *sta)
507 if (del_timer_sync(&sta->plink_timer))
508 sta->plink_timer_was_running = true;
511 void mesh_plink_restart(struct sta_info *sta)
513 if (sta->plink_timer_was_running) {
514 add_timer(&sta->plink_timer);
515 sta->plink_timer_was_running = false;
520 static inline void mesh_plink_timer_set(struct sta_info *sta, int timeout)
522 sta->plink_timer.expires = jiffies + (HZ * timeout / 1000);
523 sta->plink_timer.data = (unsigned long) sta;
524 sta->plink_timer.function = mesh_plink_timer;
525 sta->plink_timeout = timeout;
526 add_timer(&sta->plink_timer);
529 int mesh_plink_open(struct sta_info *sta)
532 struct ieee80211_sub_if_data *sdata = sta->sdata;
534 if (!test_sta_flag(sta, WLAN_STA_AUTH))
537 spin_lock_bh(&sta->lock);
538 get_random_bytes(&llid, 2);
540 if (sta->plink_state != NL80211_PLINK_LISTEN &&
541 sta->plink_state != NL80211_PLINK_BLOCKED) {
542 spin_unlock_bh(&sta->lock);
545 sta->plink_state = NL80211_PLINK_OPN_SNT;
546 mesh_plink_timer_set(sta, sdata->u.mesh.mshcfg.dot11MeshRetryTimeout);
547 spin_unlock_bh(&sta->lock);
549 "Mesh plink: starting establishment with %pM\n",
552 return mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_OPEN,
553 sta->sta.addr, llid, 0, 0);
556 void mesh_plink_block(struct sta_info *sta)
558 struct ieee80211_sub_if_data *sdata = sta->sdata;
561 spin_lock_bh(&sta->lock);
562 changed = __mesh_plink_deactivate(sta);
563 sta->plink_state = NL80211_PLINK_BLOCKED;
564 spin_unlock_bh(&sta->lock);
566 ieee80211_bss_info_change_notify(sdata, changed);
570 void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_mgmt *mgmt,
571 size_t len, struct ieee80211_rx_status *rx_status)
573 struct mesh_config *mshcfg = &sdata->u.mesh.mshcfg;
574 struct ieee802_11_elems elems;
575 struct sta_info *sta;
576 enum plink_event event;
577 enum ieee80211_self_protected_actioncode ftype;
579 bool matches_local = true;
583 __le16 plid, llid, reason;
584 static const char *mplstates[] = {
585 [NL80211_PLINK_LISTEN] = "LISTEN",
586 [NL80211_PLINK_OPN_SNT] = "OPN-SNT",
587 [NL80211_PLINK_OPN_RCVD] = "OPN-RCVD",
588 [NL80211_PLINK_CNF_RCVD] = "CNF_RCVD",
589 [NL80211_PLINK_ESTAB] = "ESTAB",
590 [NL80211_PLINK_HOLDING] = "HOLDING",
591 [NL80211_PLINK_BLOCKED] = "BLOCKED"
594 /* need action_code, aux */
595 if (len < IEEE80211_MIN_ACTION_SIZE + 3)
598 if (is_multicast_ether_addr(mgmt->da)) {
600 "Mesh plink: ignore frame from multicast address\n");
604 baseaddr = mgmt->u.action.u.self_prot.variable;
605 baselen = (u8 *) mgmt->u.action.u.self_prot.variable - (u8 *) mgmt;
606 if (mgmt->u.action.u.self_prot.action_code ==
607 WLAN_SP_MESH_PEERING_CONFIRM) {
611 ieee802_11_parse_elems(baseaddr, len - baselen, &elems);
612 if (!elems.peering) {
614 "Mesh plink: missing necessary peer link ie\n");
618 sdata->u.mesh.security == IEEE80211_MESH_SEC_NONE) {
620 "Mesh plink: can't establish link with secure peer\n");
624 ftype = mgmt->u.action.u.self_prot.action_code;
625 ie_len = elems.peering_len;
626 if ((ftype == WLAN_SP_MESH_PEERING_OPEN && ie_len != 4) ||
627 (ftype == WLAN_SP_MESH_PEERING_CONFIRM && ie_len != 6) ||
628 (ftype == WLAN_SP_MESH_PEERING_CLOSE && ie_len != 6
631 "Mesh plink: incorrect plink ie length %d %d\n",
636 if (ftype != WLAN_SP_MESH_PEERING_CLOSE &&
637 (!elems.mesh_id || !elems.mesh_config)) {
638 mpl_dbg(sdata, "Mesh plink: missing necessary ie\n");
641 /* Note the lines below are correct, the llid in the frame is the plid
642 * from the point of view of this host.
644 memcpy(&plid, PLINK_GET_LLID(elems.peering), 2);
645 if (ftype == WLAN_SP_MESH_PEERING_CONFIRM ||
646 (ftype == WLAN_SP_MESH_PEERING_CLOSE && ie_len == 8))
647 memcpy(&llid, PLINK_GET_PLID(elems.peering), 2);
651 sta = sta_info_get(sdata, mgmt->sa);
652 if (!sta && ftype != WLAN_SP_MESH_PEERING_OPEN) {
653 mpl_dbg(sdata, "Mesh plink: cls or cnf from unknown peer\n");
658 if (ftype == WLAN_SP_MESH_PEERING_OPEN &&
659 !rssi_threshold_check(sta, sdata)) {
660 mpl_dbg(sdata, "Mesh plink: %pM does not meet rssi threshold\n",
666 if (sta && !test_sta_flag(sta, WLAN_STA_AUTH)) {
667 mpl_dbg(sdata, "Mesh plink: Action frame from non-authed peer\n");
672 if (sta && sta->plink_state == NL80211_PLINK_BLOCKED) {
677 /* Now we will figure out the appropriate event... */
678 event = PLINK_UNDEFINED;
679 if (ftype != WLAN_SP_MESH_PEERING_CLOSE &&
680 !mesh_matches_local(sdata, &elems)) {
681 matches_local = false;
683 case WLAN_SP_MESH_PEERING_OPEN:
686 case WLAN_SP_MESH_PEERING_CONFIRM:
694 if (!sta && !matches_local) {
696 reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG);
698 mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
699 mgmt->sa, llid, plid, reason);
702 /* ftype == WLAN_SP_MESH_PEERING_OPEN */
703 if (!mesh_plink_free_count(sdata)) {
704 mpl_dbg(sdata, "Mesh plink error: no more free plinks\n");
709 } else if (matches_local) {
711 case WLAN_SP_MESH_PEERING_OPEN:
712 if (!mesh_plink_free_count(sdata) ||
713 (sta->plid && sta->plid != plid))
718 case WLAN_SP_MESH_PEERING_CONFIRM:
719 if (!mesh_plink_free_count(sdata) ||
720 (sta->llid != llid || sta->plid != plid))
725 case WLAN_SP_MESH_PEERING_CLOSE:
726 if (sta->plink_state == NL80211_PLINK_ESTAB)
727 /* Do not check for llid or plid. This does not
728 * follow the standard but since multiple plinks
729 * per sta are not supported, it is necessary in
730 * order to avoid a livelock when MP A sees an
731 * establish peer link to MP B but MP B does not
732 * see it. This can be caused by a timeout in
733 * B's peer link establishment or B beign
737 else if (sta->plid != plid)
739 else if (ie_len == 7 && sta->llid != llid)
745 mpl_dbg(sdata, "Mesh plink: unknown frame subtype\n");
751 if (event == OPN_ACPT) {
752 /* allocate sta entry if necessary and update info */
753 sta = mesh_peer_init(sdata, mgmt->sa, &elems);
755 mpl_dbg(sdata, "Mesh plink: failed to init peer!\n");
762 "Mesh plink (peer, state, llid, plid, event): %pM %s %d %d %d\n",
763 mgmt->sa, mplstates[sta->plink_state],
764 le16_to_cpu(sta->llid), le16_to_cpu(sta->plid),
767 spin_lock_bh(&sta->lock);
768 switch (sta->plink_state) {
769 /* spin_unlock as soon as state is updated at each case */
770 case NL80211_PLINK_LISTEN:
773 mesh_plink_fsm_restart(sta);
774 spin_unlock_bh(&sta->lock);
777 sta->plink_state = NL80211_PLINK_OPN_RCVD;
779 get_random_bytes(&llid, 2);
781 mesh_plink_timer_set(sta,
782 mshcfg->dot11MeshRetryTimeout);
783 spin_unlock_bh(&sta->lock);
784 mesh_plink_frame_tx(sdata,
785 WLAN_SP_MESH_PEERING_OPEN,
786 sta->sta.addr, llid, 0, 0);
787 mesh_plink_frame_tx(sdata,
788 WLAN_SP_MESH_PEERING_CONFIRM,
789 sta->sta.addr, llid, plid, 0);
792 spin_unlock_bh(&sta->lock);
797 case NL80211_PLINK_OPN_SNT:
801 reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG);
804 reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE);
805 sta->reason = reason;
806 sta->plink_state = NL80211_PLINK_HOLDING;
807 if (!mod_plink_timer(sta,
808 mshcfg->dot11MeshHoldingTimeout))
809 sta->ignore_plink_timer = true;
812 spin_unlock_bh(&sta->lock);
813 mesh_plink_frame_tx(sdata,
814 WLAN_SP_MESH_PEERING_CLOSE,
815 sta->sta.addr, llid, plid, reason);
818 /* retry timer is left untouched */
819 sta->plink_state = NL80211_PLINK_OPN_RCVD;
822 spin_unlock_bh(&sta->lock);
823 mesh_plink_frame_tx(sdata,
824 WLAN_SP_MESH_PEERING_CONFIRM,
825 sta->sta.addr, llid, plid, 0);
828 sta->plink_state = NL80211_PLINK_CNF_RCVD;
829 if (!mod_plink_timer(sta,
830 mshcfg->dot11MeshConfirmTimeout))
831 sta->ignore_plink_timer = true;
833 spin_unlock_bh(&sta->lock);
836 spin_unlock_bh(&sta->lock);
841 case NL80211_PLINK_OPN_RCVD:
845 reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG);
848 reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE);
849 sta->reason = reason;
850 sta->plink_state = NL80211_PLINK_HOLDING;
851 if (!mod_plink_timer(sta,
852 mshcfg->dot11MeshHoldingTimeout))
853 sta->ignore_plink_timer = true;
856 spin_unlock_bh(&sta->lock);
857 mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
858 sta->sta.addr, llid, plid, reason);
862 spin_unlock_bh(&sta->lock);
863 mesh_plink_frame_tx(sdata,
864 WLAN_SP_MESH_PEERING_CONFIRM,
865 sta->sta.addr, llid, plid, 0);
868 del_timer(&sta->plink_timer);
869 sta->plink_state = NL80211_PLINK_ESTAB;
870 spin_unlock_bh(&sta->lock);
871 changed |= mesh_plink_inc_estab_count(sdata);
872 changed |= mesh_set_ht_prot_mode(sdata);
873 mpl_dbg(sdata, "Mesh plink with %pM ESTABLISHED\n",
877 spin_unlock_bh(&sta->lock);
882 case NL80211_PLINK_CNF_RCVD:
886 reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG);
889 reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE);
890 sta->reason = reason;
891 sta->plink_state = NL80211_PLINK_HOLDING;
892 if (!mod_plink_timer(sta,
893 mshcfg->dot11MeshHoldingTimeout))
894 sta->ignore_plink_timer = true;
897 spin_unlock_bh(&sta->lock);
898 mesh_plink_frame_tx(sdata,
899 WLAN_SP_MESH_PEERING_CLOSE,
900 sta->sta.addr, llid, plid, reason);
903 del_timer(&sta->plink_timer);
904 sta->plink_state = NL80211_PLINK_ESTAB;
905 spin_unlock_bh(&sta->lock);
906 changed |= mesh_plink_inc_estab_count(sdata);
907 changed |= mesh_set_ht_prot_mode(sdata);
908 mpl_dbg(sdata, "Mesh plink with %pM ESTABLISHED\n",
910 mesh_plink_frame_tx(sdata,
911 WLAN_SP_MESH_PEERING_CONFIRM,
912 sta->sta.addr, llid, plid, 0);
915 spin_unlock_bh(&sta->lock);
920 case NL80211_PLINK_ESTAB:
923 reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE);
924 sta->reason = reason;
925 changed |= __mesh_plink_deactivate(sta);
926 sta->plink_state = NL80211_PLINK_HOLDING;
928 mod_plink_timer(sta, mshcfg->dot11MeshHoldingTimeout);
929 spin_unlock_bh(&sta->lock);
930 changed |= mesh_set_ht_prot_mode(sdata);
931 mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
932 sta->sta.addr, llid, plid, reason);
936 spin_unlock_bh(&sta->lock);
937 mesh_plink_frame_tx(sdata,
938 WLAN_SP_MESH_PEERING_CONFIRM,
939 sta->sta.addr, llid, plid, 0);
942 spin_unlock_bh(&sta->lock);
946 case NL80211_PLINK_HOLDING:
949 if (del_timer(&sta->plink_timer))
950 sta->ignore_plink_timer = 1;
951 mesh_plink_fsm_restart(sta);
952 spin_unlock_bh(&sta->lock);
959 reason = sta->reason;
960 spin_unlock_bh(&sta->lock);
961 mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
962 sta->sta.addr, llid, plid, reason);
965 spin_unlock_bh(&sta->lock);
969 /* should not get here, PLINK_BLOCKED is dealt with at the
970 * beginning of the function
972 spin_unlock_bh(&sta->lock);
979 ieee80211_bss_info_change_notify(sdata, changed);