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 * Allocate mesh sta entry and insert into station table
87 static struct sta_info *mesh_plink_alloc(struct ieee80211_sub_if_data *sdata,
92 if (sdata->local->num_sta >= MESH_MAX_PLINKS)
95 sta = sta_info_alloc(sdata, hw_addr, GFP_KERNEL);
99 sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);
100 sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);
101 sta_info_pre_move_state(sta, IEEE80211_STA_AUTHORIZED);
103 set_sta_flag(sta, WLAN_STA_WME);
109 * mesh_set_ht_prot_mode - set correct HT protection mode
111 * Section 9.23.3.5 of IEEE 80211-2012 describes the protection rules for HT
112 * mesh STA in a MBSS. Three HT protection modes are supported for now, non-HT
113 * mixed mode, 20MHz-protection and no-protection mode. non-HT mixed mode is
114 * selected if any non-HT peers are present in our MBSS. 20MHz-protection mode
115 * is selected if all peers in our 20/40MHz MBSS support HT and atleast one
116 * HT20 peer is present. Otherwise no-protection mode is selected.
118 static u32 mesh_set_ht_prot_mode(struct ieee80211_sub_if_data *sdata)
120 struct ieee80211_local *local = sdata->local;
121 struct sta_info *sta;
124 bool non_ht_sta = false, ht20_sta = false;
126 if (local->_oper_channel_type == NL80211_CHAN_NO_HT)
130 list_for_each_entry_rcu(sta, &local->sta_list, list) {
131 if (sdata != sta->sdata ||
132 sta->plink_state != NL80211_PLINK_ESTAB)
135 switch (sta->ch_type) {
136 case NL80211_CHAN_NO_HT:
137 mpl_dbg("mesh_plink %pM: nonHT sta (%pM) is present",
138 sdata->vif.addr, sta->sta.addr);
141 case NL80211_CHAN_HT20:
142 mpl_dbg("mesh_plink %pM: HT20 sta (%pM) is present",
143 sdata->vif.addr, sta->sta.addr);
153 ht_opmode = IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED;
154 else if (ht20_sta && local->_oper_channel_type > NL80211_CHAN_HT20)
155 ht_opmode = IEEE80211_HT_OP_MODE_PROTECTION_20MHZ;
157 ht_opmode = IEEE80211_HT_OP_MODE_PROTECTION_NONE;
159 if (sdata->vif.bss_conf.ht_operation_mode != ht_opmode) {
160 sdata->vif.bss_conf.ht_operation_mode = ht_opmode;
161 sdata->u.mesh.mshcfg.ht_opmode = ht_opmode;
162 changed = BSS_CHANGED_HT;
163 mpl_dbg("mesh_plink %pM: protection mode changed to %d",
164 sdata->vif.addr, ht_opmode);
171 * __mesh_plink_deactivate - deactivate mesh peer link
173 * @sta: mesh peer link to deactivate
175 * All mesh paths with this peer as next hop will be flushed
177 * Locking: the caller must hold sta->lock
179 static bool __mesh_plink_deactivate(struct sta_info *sta)
181 struct ieee80211_sub_if_data *sdata = sta->sdata;
182 bool deactivated = false;
184 if (sta->plink_state == NL80211_PLINK_ESTAB) {
185 mesh_plink_dec_estab_count(sdata);
188 sta->plink_state = NL80211_PLINK_BLOCKED;
189 mesh_path_flush_by_nexthop(sta);
195 * mesh_plink_deactivate - deactivate mesh peer link
197 * @sta: mesh peer link to deactivate
199 * All mesh paths with this peer as next hop will be flushed
201 void mesh_plink_deactivate(struct sta_info *sta)
203 struct ieee80211_sub_if_data *sdata = sta->sdata;
206 spin_lock_bh(&sta->lock);
207 deactivated = __mesh_plink_deactivate(sta);
208 sta->reason = cpu_to_le16(WLAN_REASON_MESH_PEER_CANCELED);
209 mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
210 sta->sta.addr, sta->llid, sta->plid,
212 spin_unlock_bh(&sta->lock);
215 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON);
218 static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata,
219 enum ieee80211_self_protected_actioncode action,
220 u8 *da, __le16 llid, __le16 plid, __le16 reason) {
221 struct ieee80211_local *local = sdata->local;
223 struct ieee80211_mgmt *mgmt;
224 bool include_plid = false;
225 u16 peering_proto = 0;
227 int hdr_len = offsetof(struct ieee80211_mgmt, u.action.u.self_prot) +
228 sizeof(mgmt->u.action.u.self_prot);
230 skb = dev_alloc_skb(local->tx_headroom +
232 2 + /* capability info */
234 2 + 8 + /* supported rates */
235 2 + (IEEE80211_MAX_SUPP_RATES - 8) +
236 2 + sdata->u.mesh.mesh_id_len +
237 2 + sizeof(struct ieee80211_meshconf_ie) +
238 2 + sizeof(struct ieee80211_ht_cap) +
239 2 + sizeof(struct ieee80211_ht_operation) +
240 2 + 8 + /* peering IE */
241 sdata->u.mesh.ie_len);
244 skb_reserve(skb, local->tx_headroom);
245 mgmt = (struct ieee80211_mgmt *) skb_put(skb, hdr_len);
246 memset(mgmt, 0, hdr_len);
247 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
248 IEEE80211_STYPE_ACTION);
249 memcpy(mgmt->da, da, ETH_ALEN);
250 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
251 memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
252 mgmt->u.action.category = WLAN_CATEGORY_SELF_PROTECTED;
253 mgmt->u.action.u.self_prot.action_code = action;
255 if (action != WLAN_SP_MESH_PEERING_CLOSE) {
256 /* capability info */
257 pos = skb_put(skb, 2);
259 if (action == WLAN_SP_MESH_PEERING_CONFIRM) {
261 pos = skb_put(skb, 2);
262 memcpy(pos + 2, &plid, 2);
264 if (ieee80211_add_srates_ie(&sdata->vif, skb, true) ||
265 ieee80211_add_ext_srates_ie(&sdata->vif, skb, true) ||
266 mesh_add_rsn_ie(skb, sdata) ||
267 mesh_add_meshid_ie(skb, sdata) ||
268 mesh_add_meshconf_ie(skb, sdata))
270 } else { /* WLAN_SP_MESH_PEERING_CLOSE */
271 if (mesh_add_meshid_ie(skb, sdata))
275 /* Add Mesh Peering Management element */
277 case WLAN_SP_MESH_PEERING_OPEN:
279 case WLAN_SP_MESH_PEERING_CONFIRM:
283 case WLAN_SP_MESH_PEERING_CLOSE:
288 ie_len += 2; /* reason code */
294 if (WARN_ON(skb_tailroom(skb) < 2 + ie_len))
297 pos = skb_put(skb, 2 + ie_len);
298 *pos++ = WLAN_EID_PEER_MGMT;
300 memcpy(pos, &peering_proto, 2);
302 memcpy(pos, &llid, 2);
305 memcpy(pos, &plid, 2);
308 if (action == WLAN_SP_MESH_PEERING_CLOSE) {
309 memcpy(pos, &reason, 2);
313 if (action != WLAN_SP_MESH_PEERING_CLOSE) {
314 if (mesh_add_ht_cap_ie(skb, sdata) ||
315 mesh_add_ht_oper_ie(skb, sdata))
319 if (mesh_add_vendor_ies(skb, sdata))
322 ieee80211_tx_skb(sdata, skb);
326 /* mesh_peer_init - initialize new mesh peer and return resulting sta_info
328 * @sdata: local meshif
329 * @addr: peer's address
330 * @elems: IEs from beacon or mesh peering frame
334 static struct sta_info *mesh_peer_init(struct ieee80211_sub_if_data *sdata,
336 struct ieee802_11_elems *elems)
338 struct ieee80211_local *local = sdata->local;
339 enum ieee80211_band band = local->oper_channel->band;
340 struct ieee80211_supported_band *sband;
341 u32 rates, basic_rates = 0;
342 struct sta_info *sta;
345 sband = local->hw.wiphy->bands[band];
346 rates = ieee80211_sta_get_rates(local, elems, band, &basic_rates);
348 sta = sta_info_get(sdata, addr);
350 /* Userspace handles peer allocation when security is enabled */
351 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_AUTHED) {
352 cfg80211_notify_new_peer_candidate(sdata->dev, addr,
359 sta = mesh_plink_alloc(sdata, addr);
365 spin_lock_bh(&sta->lock);
366 sta->last_rx = jiffies;
367 sta->sta.supp_rates[band] = rates;
368 if (elems->ht_cap_elem &&
369 sdata->local->_oper_channel_type != NL80211_CHAN_NO_HT)
370 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
374 memset(&sta->sta.ht_cap, 0, sizeof(sta->sta.ht_cap));
376 if (elems->ht_operation) {
377 if (!(elems->ht_operation->ht_param &
378 IEEE80211_HT_PARAM_CHAN_WIDTH_ANY))
379 sta->sta.ht_cap.cap &=
380 ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
382 ieee80211_ht_oper_to_channel_type(elems->ht_operation);
385 rate_control_rate_init(sta);
386 spin_unlock_bh(&sta->lock);
388 if (insert && sta_info_insert(sta))
394 void mesh_neighbour_update(struct ieee80211_sub_if_data *sdata,
396 struct ieee802_11_elems *elems)
398 struct sta_info *sta;
401 sta = mesh_peer_init(sdata, hw_addr, elems);
405 if (mesh_peer_accepts_plinks(elems) &&
406 sta->plink_state == NL80211_PLINK_LISTEN &&
407 sdata->u.mesh.accepting_plinks &&
408 sdata->u.mesh.mshcfg.auto_open_plinks &&
409 rssi_threshold_check(sta, sdata))
410 mesh_plink_open(sta);
416 static void mesh_plink_timer(unsigned long data)
418 struct sta_info *sta;
419 __le16 llid, plid, reason;
420 struct ieee80211_sub_if_data *sdata;
423 * This STA is valid because sta_info_destroy() will
424 * del_timer_sync() this timer after having made sure
425 * it cannot be readded (by deleting the plink.)
427 sta = (struct sta_info *) data;
429 if (sta->sdata->local->quiescing) {
430 sta->plink_timer_was_running = true;
434 spin_lock_bh(&sta->lock);
435 if (sta->ignore_plink_timer) {
436 sta->ignore_plink_timer = false;
437 spin_unlock_bh(&sta->lock);
440 mpl_dbg("Mesh plink timer for %pM fired on state %d\n",
441 sta->sta.addr, sta->plink_state);
447 switch (sta->plink_state) {
448 case NL80211_PLINK_OPN_RCVD:
449 case NL80211_PLINK_OPN_SNT:
451 if (sta->plink_retries < dot11MeshMaxRetries(sdata)) {
453 mpl_dbg("Mesh plink for %pM (retry, timeout): %d %d\n",
454 sta->sta.addr, sta->plink_retries,
456 get_random_bytes(&rand, sizeof(u32));
457 sta->plink_timeout = sta->plink_timeout +
458 rand % sta->plink_timeout;
459 ++sta->plink_retries;
460 mod_plink_timer(sta, sta->plink_timeout);
461 spin_unlock_bh(&sta->lock);
462 mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_OPEN,
463 sta->sta.addr, llid, 0, 0);
466 reason = cpu_to_le16(WLAN_REASON_MESH_MAX_RETRIES);
467 /* fall through on else */
468 case NL80211_PLINK_CNF_RCVD:
471 reason = cpu_to_le16(WLAN_REASON_MESH_CONFIRM_TIMEOUT);
472 sta->plink_state = NL80211_PLINK_HOLDING;
473 mod_plink_timer(sta, dot11MeshHoldingTimeout(sdata));
474 spin_unlock_bh(&sta->lock);
475 mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
476 sta->sta.addr, llid, plid, reason);
478 case NL80211_PLINK_HOLDING:
480 del_timer(&sta->plink_timer);
481 mesh_plink_fsm_restart(sta);
482 spin_unlock_bh(&sta->lock);
485 spin_unlock_bh(&sta->lock);
491 void mesh_plink_quiesce(struct sta_info *sta)
493 if (del_timer_sync(&sta->plink_timer))
494 sta->plink_timer_was_running = true;
497 void mesh_plink_restart(struct sta_info *sta)
499 if (sta->plink_timer_was_running) {
500 add_timer(&sta->plink_timer);
501 sta->plink_timer_was_running = false;
506 static inline void mesh_plink_timer_set(struct sta_info *sta, int timeout)
508 sta->plink_timer.expires = jiffies + (HZ * timeout / 1000);
509 sta->plink_timer.data = (unsigned long) sta;
510 sta->plink_timer.function = mesh_plink_timer;
511 sta->plink_timeout = timeout;
512 add_timer(&sta->plink_timer);
515 int mesh_plink_open(struct sta_info *sta)
518 struct ieee80211_sub_if_data *sdata = sta->sdata;
520 if (!test_sta_flag(sta, WLAN_STA_AUTH))
523 spin_lock_bh(&sta->lock);
524 get_random_bytes(&llid, 2);
526 if (sta->plink_state != NL80211_PLINK_LISTEN) {
527 spin_unlock_bh(&sta->lock);
530 sta->plink_state = NL80211_PLINK_OPN_SNT;
531 mesh_plink_timer_set(sta, dot11MeshRetryTimeout(sdata));
532 spin_unlock_bh(&sta->lock);
533 mpl_dbg("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 #ifdef CONFIG_MAC80211_VERBOSE_MPL_DEBUG
569 static const char *mplstates[] = {
570 [NL80211_PLINK_LISTEN] = "LISTEN",
571 [NL80211_PLINK_OPN_SNT] = "OPN-SNT",
572 [NL80211_PLINK_OPN_RCVD] = "OPN-RCVD",
573 [NL80211_PLINK_CNF_RCVD] = "CNF_RCVD",
574 [NL80211_PLINK_ESTAB] = "ESTAB",
575 [NL80211_PLINK_HOLDING] = "HOLDING",
576 [NL80211_PLINK_BLOCKED] = "BLOCKED"
580 /* need action_code, aux */
581 if (len < IEEE80211_MIN_ACTION_SIZE + 3)
584 if (is_multicast_ether_addr(mgmt->da)) {
585 mpl_dbg("Mesh plink: ignore frame from multicast address");
589 baseaddr = mgmt->u.action.u.self_prot.variable;
590 baselen = (u8 *) mgmt->u.action.u.self_prot.variable - (u8 *) mgmt;
591 if (mgmt->u.action.u.self_prot.action_code ==
592 WLAN_SP_MESH_PEERING_CONFIRM) {
596 ieee802_11_parse_elems(baseaddr, len - baselen, &elems);
597 if (!elems.peering) {
598 mpl_dbg("Mesh plink: missing necessary peer link ie\n");
602 sdata->u.mesh.security == IEEE80211_MESH_SEC_NONE) {
603 mpl_dbg("Mesh plink: can't establish link with secure peer\n");
607 ftype = mgmt->u.action.u.self_prot.action_code;
608 ie_len = elems.peering_len;
609 if ((ftype == WLAN_SP_MESH_PEERING_OPEN && ie_len != 4) ||
610 (ftype == WLAN_SP_MESH_PEERING_CONFIRM && ie_len != 6) ||
611 (ftype == WLAN_SP_MESH_PEERING_CLOSE && ie_len != 6
613 mpl_dbg("Mesh plink: incorrect plink ie length %d %d\n",
618 if (ftype != WLAN_SP_MESH_PEERING_CLOSE &&
619 (!elems.mesh_id || !elems.mesh_config)) {
620 mpl_dbg("Mesh plink: missing necessary ie\n");
623 /* Note the lines below are correct, the llid in the frame is the plid
624 * from the point of view of this host.
626 memcpy(&plid, PLINK_GET_LLID(elems.peering), 2);
627 if (ftype == WLAN_SP_MESH_PEERING_CONFIRM ||
628 (ftype == WLAN_SP_MESH_PEERING_CLOSE && ie_len == 8))
629 memcpy(&llid, PLINK_GET_PLID(elems.peering), 2);
633 sta = sta_info_get(sdata, mgmt->sa);
634 if (!sta && ftype != WLAN_SP_MESH_PEERING_OPEN) {
635 mpl_dbg("Mesh plink: cls or cnf from unknown peer\n");
640 if (ftype == WLAN_SP_MESH_PEERING_OPEN &&
641 !rssi_threshold_check(sta, sdata)) {
642 mpl_dbg("Mesh plink: %pM does not meet rssi threshold\n",
648 if (sta && !test_sta_flag(sta, WLAN_STA_AUTH)) {
649 mpl_dbg("Mesh plink: Action frame from non-authed peer\n");
654 if (sta && sta->plink_state == NL80211_PLINK_BLOCKED) {
659 /* Now we will figure out the appropriate event... */
660 event = PLINK_UNDEFINED;
661 if (ftype != WLAN_SP_MESH_PEERING_CLOSE &&
662 !mesh_matches_local(sdata, &elems)) {
663 matches_local = false;
665 case WLAN_SP_MESH_PEERING_OPEN:
668 case WLAN_SP_MESH_PEERING_CONFIRM:
676 if (!sta && !matches_local) {
678 reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG);
680 mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
681 mgmt->sa, llid, plid, reason);
684 /* ftype == WLAN_SP_MESH_PEERING_OPEN */
685 if (!mesh_plink_free_count(sdata)) {
686 mpl_dbg("Mesh plink error: no more free plinks\n");
691 } else if (matches_local) {
693 case WLAN_SP_MESH_PEERING_OPEN:
694 if (!mesh_plink_free_count(sdata) ||
695 (sta->plid && sta->plid != plid))
700 case WLAN_SP_MESH_PEERING_CONFIRM:
701 if (!mesh_plink_free_count(sdata) ||
702 (sta->llid != llid || sta->plid != plid))
707 case WLAN_SP_MESH_PEERING_CLOSE:
708 if (sta->plink_state == NL80211_PLINK_ESTAB)
709 /* Do not check for llid or plid. This does not
710 * follow the standard but since multiple plinks
711 * per sta are not supported, it is necessary in
712 * order to avoid a livelock when MP A sees an
713 * establish peer link to MP B but MP B does not
714 * see it. This can be caused by a timeout in
715 * B's peer link establishment or B beign
719 else if (sta->plid != plid)
721 else if (ie_len == 7 && sta->llid != llid)
727 mpl_dbg("Mesh plink: unknown frame subtype\n");
733 if (event == OPN_ACPT) {
734 /* allocate sta entry if necessary and update info */
735 sta = mesh_peer_init(sdata, mgmt->sa, &elems);
737 mpl_dbg("Mesh plink: failed to init peer!\n");
743 mpl_dbg("Mesh plink (peer, state, llid, plid, event): %pM %s %d %d %d\n",
744 mgmt->sa, mplstates[sta->plink_state],
745 le16_to_cpu(sta->llid), le16_to_cpu(sta->plid),
748 spin_lock_bh(&sta->lock);
749 switch (sta->plink_state) {
750 /* spin_unlock as soon as state is updated at each case */
751 case NL80211_PLINK_LISTEN:
754 mesh_plink_fsm_restart(sta);
755 spin_unlock_bh(&sta->lock);
758 sta->plink_state = NL80211_PLINK_OPN_RCVD;
760 get_random_bytes(&llid, 2);
762 mesh_plink_timer_set(sta, dot11MeshRetryTimeout(sdata));
763 spin_unlock_bh(&sta->lock);
764 mesh_plink_frame_tx(sdata,
765 WLAN_SP_MESH_PEERING_OPEN,
766 sta->sta.addr, llid, 0, 0);
767 mesh_plink_frame_tx(sdata,
768 WLAN_SP_MESH_PEERING_CONFIRM,
769 sta->sta.addr, llid, plid, 0);
772 spin_unlock_bh(&sta->lock);
777 case NL80211_PLINK_OPN_SNT:
781 reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG);
784 reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE);
785 sta->reason = reason;
786 sta->plink_state = NL80211_PLINK_HOLDING;
787 if (!mod_plink_timer(sta,
788 dot11MeshHoldingTimeout(sdata)))
789 sta->ignore_plink_timer = true;
792 spin_unlock_bh(&sta->lock);
793 mesh_plink_frame_tx(sdata,
794 WLAN_SP_MESH_PEERING_CLOSE,
795 sta->sta.addr, llid, plid, reason);
798 /* retry timer is left untouched */
799 sta->plink_state = NL80211_PLINK_OPN_RCVD;
802 spin_unlock_bh(&sta->lock);
803 mesh_plink_frame_tx(sdata,
804 WLAN_SP_MESH_PEERING_CONFIRM,
805 sta->sta.addr, llid, plid, 0);
808 sta->plink_state = NL80211_PLINK_CNF_RCVD;
809 if (!mod_plink_timer(sta,
810 dot11MeshConfirmTimeout(sdata)))
811 sta->ignore_plink_timer = true;
813 spin_unlock_bh(&sta->lock);
816 spin_unlock_bh(&sta->lock);
821 case NL80211_PLINK_OPN_RCVD:
825 reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG);
828 reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE);
829 sta->reason = reason;
830 sta->plink_state = NL80211_PLINK_HOLDING;
831 if (!mod_plink_timer(sta,
832 dot11MeshHoldingTimeout(sdata)))
833 sta->ignore_plink_timer = true;
836 spin_unlock_bh(&sta->lock);
837 mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
838 sta->sta.addr, llid, plid, reason);
842 spin_unlock_bh(&sta->lock);
843 mesh_plink_frame_tx(sdata,
844 WLAN_SP_MESH_PEERING_CONFIRM,
845 sta->sta.addr, llid, plid, 0);
848 del_timer(&sta->plink_timer);
849 sta->plink_state = NL80211_PLINK_ESTAB;
850 spin_unlock_bh(&sta->lock);
851 mesh_plink_inc_estab_count(sdata);
852 changed |= mesh_set_ht_prot_mode(sdata);
853 changed |= BSS_CHANGED_BEACON;
854 mpl_dbg("Mesh plink with %pM ESTABLISHED\n",
858 spin_unlock_bh(&sta->lock);
863 case NL80211_PLINK_CNF_RCVD:
867 reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG);
870 reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE);
871 sta->reason = reason;
872 sta->plink_state = NL80211_PLINK_HOLDING;
873 if (!mod_plink_timer(sta,
874 dot11MeshHoldingTimeout(sdata)))
875 sta->ignore_plink_timer = true;
878 spin_unlock_bh(&sta->lock);
879 mesh_plink_frame_tx(sdata,
880 WLAN_SP_MESH_PEERING_CLOSE,
881 sta->sta.addr, llid, plid, reason);
884 del_timer(&sta->plink_timer);
885 sta->plink_state = NL80211_PLINK_ESTAB;
886 spin_unlock_bh(&sta->lock);
887 mesh_plink_inc_estab_count(sdata);
888 changed |= mesh_set_ht_prot_mode(sdata);
889 changed |= BSS_CHANGED_BEACON;
890 mpl_dbg("Mesh plink with %pM ESTABLISHED\n",
892 mesh_plink_frame_tx(sdata,
893 WLAN_SP_MESH_PEERING_CONFIRM,
894 sta->sta.addr, llid, plid, 0);
897 spin_unlock_bh(&sta->lock);
902 case NL80211_PLINK_ESTAB:
905 reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE);
906 sta->reason = reason;
907 __mesh_plink_deactivate(sta);
908 sta->plink_state = NL80211_PLINK_HOLDING;
910 mod_plink_timer(sta, dot11MeshHoldingTimeout(sdata));
911 spin_unlock_bh(&sta->lock);
912 changed |= mesh_set_ht_prot_mode(sdata);
913 changed |= BSS_CHANGED_BEACON;
914 mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
915 sta->sta.addr, llid, plid, reason);
919 spin_unlock_bh(&sta->lock);
920 mesh_plink_frame_tx(sdata,
921 WLAN_SP_MESH_PEERING_CONFIRM,
922 sta->sta.addr, llid, plid, 0);
925 spin_unlock_bh(&sta->lock);
929 case NL80211_PLINK_HOLDING:
932 if (del_timer(&sta->plink_timer))
933 sta->ignore_plink_timer = 1;
934 mesh_plink_fsm_restart(sta);
935 spin_unlock_bh(&sta->lock);
942 reason = sta->reason;
943 spin_unlock_bh(&sta->lock);
944 mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
945 sta->sta.addr, llid, plid, reason);
948 spin_unlock_bh(&sta->lock);
952 /* should not get here, PLINK_BLOCKED is dealt with at the
953 * beginning of the function
955 spin_unlock_bh(&sta->lock);
962 ieee80211_bss_info_change_notify(sdata, changed);