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);
108 /** mesh_set_ht_prot_mode - set correct HT protection mode
110 * Section 9.23.3.5 of IEEE 80211s standard describes the protection rules for
111 * HT mesh STA in a MBSS. Three HT protection modes are supported for now,
112 * non-HT mixed mode, 20MHz-protection and no-protection mode. non-HT mixed
113 * mode is selected if any non-HT peers are present in our MBSS.
114 * 20MHz-protection mode is selected if all peers in our 20/40MHz MBSS support
115 * HT and atleast one HT20 peer is present. Otherwise no-protection mode is
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) {
133 switch (sta->ch_type) {
134 case NL80211_CHAN_NO_HT:
135 mpl_dbg("mesh_plink %pM: nonHT sta (%pM) is present",
136 sdata->vif.addr, sta->sta.addr);
139 case NL80211_CHAN_HT20:
140 mpl_dbg("mesh_plink %pM: HT20 sta (%pM) is present",
141 sdata->vif.addr, sta->sta.addr);
152 ht_opmode = IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED;
153 else if (ht20_sta && local->_oper_channel_type > NL80211_CHAN_HT20)
154 ht_opmode = IEEE80211_HT_OP_MODE_PROTECTION_20MHZ;
156 ht_opmode = IEEE80211_HT_OP_MODE_PROTECTION_NONE;
158 if (sdata->vif.bss_conf.ht_operation_mode != ht_opmode) {
159 sdata->vif.bss_conf.ht_operation_mode = ht_opmode;
160 sdata->u.mesh.mshcfg.ht_opmode = ht_opmode;
161 changed = BSS_CHANGED_HT;
162 mpl_dbg("mesh_plink %pM: protection mode changed to %d",
163 sdata->vif.addr, ht_opmode);
170 * __mesh_plink_deactivate - deactivate mesh peer link
172 * @sta: mesh peer link to deactivate
174 * All mesh paths with this peer as next hop will be flushed
176 * Locking: the caller must hold sta->lock
178 static bool __mesh_plink_deactivate(struct sta_info *sta)
180 struct ieee80211_sub_if_data *sdata = sta->sdata;
181 bool deactivated = false;
183 if (sta->plink_state == NL80211_PLINK_ESTAB) {
184 mesh_plink_dec_estab_count(sdata);
187 sta->plink_state = NL80211_PLINK_BLOCKED;
188 mesh_path_flush_by_nexthop(sta);
194 * mesh_plink_deactivate - deactivate mesh peer link
196 * @sta: mesh peer link to deactivate
198 * All mesh paths with this peer as next hop will be flushed
200 void mesh_plink_deactivate(struct sta_info *sta)
202 struct ieee80211_sub_if_data *sdata = sta->sdata;
205 spin_lock_bh(&sta->lock);
206 deactivated = __mesh_plink_deactivate(sta);
207 sta->reason = cpu_to_le16(WLAN_REASON_MESH_PEER_CANCELED);
208 mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
209 sta->sta.addr, sta->llid, sta->plid,
211 spin_unlock_bh(&sta->lock);
214 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON);
217 static int mesh_plink_frame_tx(struct ieee80211_sub_if_data *sdata,
218 enum ieee80211_self_protected_actioncode action,
219 u8 *da, __le16 llid, __le16 plid, __le16 reason) {
220 struct ieee80211_local *local = sdata->local;
222 struct ieee80211_mgmt *mgmt;
223 bool include_plid = false;
224 u16 peering_proto = 0;
226 int hdr_len = offsetof(struct ieee80211_mgmt, u.action.u.self_prot) +
227 sizeof(mgmt->u.action.u.self_prot);
229 skb = dev_alloc_skb(local->tx_headroom +
231 2 + /* capability info */
233 2 + 8 + /* supported rates */
234 2 + (IEEE80211_MAX_SUPP_RATES - 8) +
235 2 + sdata->u.mesh.mesh_id_len +
236 2 + sizeof(struct ieee80211_meshconf_ie) +
237 2 + sizeof(struct ieee80211_ht_cap) +
238 2 + sizeof(struct ieee80211_ht_operation) +
239 2 + 8 + /* peering IE */
240 sdata->u.mesh.ie_len);
243 skb_reserve(skb, local->tx_headroom);
244 mgmt = (struct ieee80211_mgmt *) skb_put(skb, hdr_len);
245 memset(mgmt, 0, hdr_len);
246 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
247 IEEE80211_STYPE_ACTION);
248 memcpy(mgmt->da, da, ETH_ALEN);
249 memcpy(mgmt->sa, sdata->vif.addr, ETH_ALEN);
250 memcpy(mgmt->bssid, sdata->vif.addr, ETH_ALEN);
251 mgmt->u.action.category = WLAN_CATEGORY_SELF_PROTECTED;
252 mgmt->u.action.u.self_prot.action_code = action;
254 if (action != WLAN_SP_MESH_PEERING_CLOSE) {
255 /* capability info */
256 pos = skb_put(skb, 2);
258 if (action == WLAN_SP_MESH_PEERING_CONFIRM) {
260 pos = skb_put(skb, 2);
261 memcpy(pos + 2, &plid, 2);
263 if (ieee80211_add_srates_ie(&sdata->vif, skb, true) ||
264 ieee80211_add_ext_srates_ie(&sdata->vif, skb, true) ||
265 mesh_add_rsn_ie(skb, sdata) ||
266 mesh_add_meshid_ie(skb, sdata) ||
267 mesh_add_meshconf_ie(skb, sdata))
269 } else { /* WLAN_SP_MESH_PEERING_CLOSE */
270 if (mesh_add_meshid_ie(skb, sdata))
274 /* Add Mesh Peering Management element */
276 case WLAN_SP_MESH_PEERING_OPEN:
278 case WLAN_SP_MESH_PEERING_CONFIRM:
282 case WLAN_SP_MESH_PEERING_CLOSE:
287 ie_len += 2; /* reason code */
293 if (WARN_ON(skb_tailroom(skb) < 2 + ie_len))
296 pos = skb_put(skb, 2 + ie_len);
297 *pos++ = WLAN_EID_PEER_MGMT;
299 memcpy(pos, &peering_proto, 2);
301 memcpy(pos, &llid, 2);
304 memcpy(pos, &plid, 2);
307 if (action == WLAN_SP_MESH_PEERING_CLOSE) {
308 memcpy(pos, &reason, 2);
312 if (action != WLAN_SP_MESH_PEERING_CLOSE) {
313 if (mesh_add_ht_cap_ie(skb, sdata) ||
314 mesh_add_ht_oper_ie(skb, sdata))
318 if (mesh_add_vendor_ies(skb, sdata))
321 ieee80211_tx_skb(sdata, skb);
325 /* mesh_peer_init - initialize new mesh peer and return resulting sta_info
327 * @sdata: local meshif
328 * @addr: peer's address
329 * @elems: IEs from beacon or mesh peering frame
333 static struct sta_info *mesh_peer_init(struct ieee80211_sub_if_data *sdata,
335 struct ieee802_11_elems *elems)
337 struct ieee80211_local *local = sdata->local;
338 enum ieee80211_band band = local->oper_channel->band;
339 struct ieee80211_supported_band *sband;
340 u32 rates, basic_rates = 0;
341 struct sta_info *sta;
344 sband = local->hw.wiphy->bands[band];
345 rates = ieee80211_sta_get_rates(local, elems, band, &basic_rates);
347 sta = sta_info_get(sdata, addr);
349 sta = mesh_plink_alloc(sdata, addr);
355 spin_lock_bh(&sta->lock);
356 sta->last_rx = jiffies;
357 sta->sta.supp_rates[band] = rates;
358 if (elems->ht_cap_elem &&
359 sdata->local->_oper_channel_type != NL80211_CHAN_NO_HT)
360 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
364 memset(&sta->sta.ht_cap, 0, sizeof(sta->sta.ht_cap));
366 if (elems->ht_operation) {
367 if (!(elems->ht_operation->ht_param &
368 IEEE80211_HT_PARAM_CHAN_WIDTH_ANY))
369 sta->sta.ht_cap.cap &=
370 ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
372 ieee80211_ht_oper_to_channel_type(elems->ht_operation);
375 rate_control_rate_init(sta);
376 spin_unlock_bh(&sta->lock);
378 if (insert && sta_info_insert(sta))
384 void mesh_neighbour_update(struct ieee80211_sub_if_data *sdata,
386 struct ieee802_11_elems *elems)
388 struct sta_info *sta;
390 /* Userspace handles peer allocation when security is enabled */
391 if (sdata->u.mesh.security & IEEE80211_MESH_SEC_AUTHED) {
392 cfg80211_notify_new_peer_candidate(sdata->dev, hw_addr,
400 sta = mesh_peer_init(sdata, hw_addr, elems);
404 if (mesh_peer_accepts_plinks(elems) &&
405 sta->plink_state == NL80211_PLINK_LISTEN &&
406 sdata->u.mesh.accepting_plinks &&
407 sdata->u.mesh.mshcfg.auto_open_plinks &&
408 rssi_threshold_check(sta, sdata))
409 mesh_plink_open(sta);
415 static void mesh_plink_timer(unsigned long data)
417 struct sta_info *sta;
418 __le16 llid, plid, reason;
419 struct ieee80211_sub_if_data *sdata;
422 * This STA is valid because sta_info_destroy() will
423 * del_timer_sync() this timer after having made sure
424 * it cannot be readded (by deleting the plink.)
426 sta = (struct sta_info *) data;
428 if (sta->sdata->local->quiescing) {
429 sta->plink_timer_was_running = true;
433 spin_lock_bh(&sta->lock);
434 if (sta->ignore_plink_timer) {
435 sta->ignore_plink_timer = false;
436 spin_unlock_bh(&sta->lock);
439 mpl_dbg("Mesh plink timer for %pM fired on state %d\n",
440 sta->sta.addr, sta->plink_state);
446 switch (sta->plink_state) {
447 case NL80211_PLINK_OPN_RCVD:
448 case NL80211_PLINK_OPN_SNT:
450 if (sta->plink_retries < dot11MeshMaxRetries(sdata)) {
452 mpl_dbg("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);
532 mpl_dbg("Mesh plink: starting establishment with %pM\n",
535 return mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_OPEN,
536 sta->sta.addr, llid, 0, 0);
539 void mesh_plink_block(struct sta_info *sta)
541 struct ieee80211_sub_if_data *sdata = sta->sdata;
544 spin_lock_bh(&sta->lock);
545 deactivated = __mesh_plink_deactivate(sta);
546 sta->plink_state = NL80211_PLINK_BLOCKED;
547 spin_unlock_bh(&sta->lock);
550 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON);
554 void mesh_rx_plink_frame(struct ieee80211_sub_if_data *sdata, struct ieee80211_mgmt *mgmt,
555 size_t len, struct ieee80211_rx_status *rx_status)
557 struct ieee802_11_elems elems;
558 struct sta_info *sta;
559 enum plink_event event;
560 enum ieee80211_self_protected_actioncode ftype;
562 bool matches_local = true;
566 __le16 plid, llid, reason;
567 #ifdef CONFIG_MAC80211_VERBOSE_MPL_DEBUG
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"
579 /* need action_code, aux */
580 if (len < IEEE80211_MIN_ACTION_SIZE + 3)
583 if (is_multicast_ether_addr(mgmt->da)) {
584 mpl_dbg("Mesh plink: ignore frame from multicast address");
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) {
597 mpl_dbg("Mesh plink: missing necessary peer link ie\n");
601 sdata->u.mesh.security == IEEE80211_MESH_SEC_NONE) {
602 mpl_dbg("Mesh plink: can't establish link with secure peer\n");
606 ftype = mgmt->u.action.u.self_prot.action_code;
607 ie_len = elems.peering_len;
608 if ((ftype == WLAN_SP_MESH_PEERING_OPEN && ie_len != 4) ||
609 (ftype == WLAN_SP_MESH_PEERING_CONFIRM && ie_len != 6) ||
610 (ftype == WLAN_SP_MESH_PEERING_CLOSE && ie_len != 6
612 mpl_dbg("Mesh plink: incorrect plink ie length %d %d\n",
617 if (ftype != WLAN_SP_MESH_PEERING_CLOSE &&
618 (!elems.mesh_id || !elems.mesh_config)) {
619 mpl_dbg("Mesh plink: missing necessary ie\n");
622 /* Note the lines below are correct, the llid in the frame is the plid
623 * from the point of view of this host.
625 memcpy(&plid, PLINK_GET_LLID(elems.peering), 2);
626 if (ftype == WLAN_SP_MESH_PEERING_CONFIRM ||
627 (ftype == WLAN_SP_MESH_PEERING_CLOSE && ie_len == 8))
628 memcpy(&llid, PLINK_GET_PLID(elems.peering), 2);
632 sta = sta_info_get(sdata, mgmt->sa);
633 if (!sta && ftype != WLAN_SP_MESH_PEERING_OPEN) {
634 mpl_dbg("Mesh plink: cls or cnf from unknown peer\n");
639 if (ftype == WLAN_SP_MESH_PEERING_OPEN &&
640 !rssi_threshold_check(sta, sdata)) {
641 mpl_dbg("Mesh plink: %pM does not meet rssi threshold\n",
647 if (sta && !test_sta_flag(sta, WLAN_STA_AUTH)) {
648 mpl_dbg("Mesh plink: Action frame from non-authed peer\n");
653 if (sta && sta->plink_state == NL80211_PLINK_BLOCKED) {
658 /* Now we will figure out the appropriate event... */
659 event = PLINK_UNDEFINED;
660 if (ftype != WLAN_SP_MESH_PEERING_CLOSE &&
661 !mesh_matches_local(sdata, &elems)) {
662 matches_local = false;
664 case WLAN_SP_MESH_PEERING_OPEN:
667 case WLAN_SP_MESH_PEERING_CONFIRM:
675 if (!sta && !matches_local) {
677 reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG);
679 mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
680 mgmt->sa, llid, plid, reason);
683 /* ftype == WLAN_SP_MESH_PEERING_OPEN */
684 if (!mesh_plink_free_count(sdata)) {
685 mpl_dbg("Mesh plink error: no more free plinks\n");
690 } else if (matches_local) {
692 case WLAN_SP_MESH_PEERING_OPEN:
693 if (!mesh_plink_free_count(sdata) ||
694 (sta->plid && sta->plid != plid))
699 case WLAN_SP_MESH_PEERING_CONFIRM:
700 if (!mesh_plink_free_count(sdata) ||
701 (sta->llid != llid || sta->plid != plid))
706 case WLAN_SP_MESH_PEERING_CLOSE:
707 if (sta->plink_state == NL80211_PLINK_ESTAB)
708 /* Do not check for llid or plid. This does not
709 * follow the standard but since multiple plinks
710 * per sta are not supported, it is necessary in
711 * order to avoid a livelock when MP A sees an
712 * establish peer link to MP B but MP B does not
713 * see it. This can be caused by a timeout in
714 * B's peer link establishment or B beign
718 else if (sta->plid != plid)
720 else if (ie_len == 7 && sta->llid != llid)
726 mpl_dbg("Mesh plink: unknown frame subtype\n");
732 if (event == OPN_ACPT) {
733 /* allocate sta entry if necessary and update info */
734 sta = mesh_peer_init(sdata, mgmt->sa, &elems);
736 mpl_dbg("Mesh plink: failed to init peer!\n");
742 mpl_dbg("Mesh plink (peer, state, llid, plid, event): %pM %s %d %d %d\n",
743 mgmt->sa, mplstates[sta->plink_state],
744 le16_to_cpu(sta->llid), le16_to_cpu(sta->plid),
747 spin_lock_bh(&sta->lock);
748 switch (sta->plink_state) {
749 /* spin_unlock as soon as state is updated at each case */
750 case NL80211_PLINK_LISTEN:
753 mesh_plink_fsm_restart(sta);
754 spin_unlock_bh(&sta->lock);
757 sta->plink_state = NL80211_PLINK_OPN_RCVD;
759 get_random_bytes(&llid, 2);
761 mesh_plink_timer_set(sta, dot11MeshRetryTimeout(sdata));
762 spin_unlock_bh(&sta->lock);
763 mesh_plink_frame_tx(sdata,
764 WLAN_SP_MESH_PEERING_OPEN,
765 sta->sta.addr, llid, 0, 0);
766 mesh_plink_frame_tx(sdata,
767 WLAN_SP_MESH_PEERING_CONFIRM,
768 sta->sta.addr, llid, plid, 0);
771 spin_unlock_bh(&sta->lock);
776 case NL80211_PLINK_OPN_SNT:
780 reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG);
783 reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE);
784 sta->reason = reason;
785 sta->plink_state = NL80211_PLINK_HOLDING;
786 if (!mod_plink_timer(sta,
787 dot11MeshHoldingTimeout(sdata)))
788 sta->ignore_plink_timer = true;
791 spin_unlock_bh(&sta->lock);
792 mesh_plink_frame_tx(sdata,
793 WLAN_SP_MESH_PEERING_CLOSE,
794 sta->sta.addr, llid, plid, reason);
797 /* retry timer is left untouched */
798 sta->plink_state = NL80211_PLINK_OPN_RCVD;
801 spin_unlock_bh(&sta->lock);
802 mesh_plink_frame_tx(sdata,
803 WLAN_SP_MESH_PEERING_CONFIRM,
804 sta->sta.addr, llid, plid, 0);
807 sta->plink_state = NL80211_PLINK_CNF_RCVD;
808 if (!mod_plink_timer(sta,
809 dot11MeshConfirmTimeout(sdata)))
810 sta->ignore_plink_timer = true;
812 spin_unlock_bh(&sta->lock);
815 spin_unlock_bh(&sta->lock);
820 case NL80211_PLINK_OPN_RCVD:
824 reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG);
827 reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE);
828 sta->reason = reason;
829 sta->plink_state = NL80211_PLINK_HOLDING;
830 if (!mod_plink_timer(sta,
831 dot11MeshHoldingTimeout(sdata)))
832 sta->ignore_plink_timer = true;
835 spin_unlock_bh(&sta->lock);
836 mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
837 sta->sta.addr, llid, plid, reason);
841 spin_unlock_bh(&sta->lock);
842 mesh_plink_frame_tx(sdata,
843 WLAN_SP_MESH_PEERING_CONFIRM,
844 sta->sta.addr, llid, plid, 0);
847 del_timer(&sta->plink_timer);
848 sta->plink_state = NL80211_PLINK_ESTAB;
849 spin_unlock_bh(&sta->lock);
850 mesh_plink_inc_estab_count(sdata);
851 changed |= mesh_set_ht_prot_mode(sdata);
852 changed |= BSS_CHANGED_BEACON;
853 mpl_dbg("Mesh plink with %pM ESTABLISHED\n",
857 spin_unlock_bh(&sta->lock);
862 case NL80211_PLINK_CNF_RCVD:
866 reason = cpu_to_le16(WLAN_REASON_MESH_CONFIG);
869 reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE);
870 sta->reason = reason;
871 sta->plink_state = NL80211_PLINK_HOLDING;
872 if (!mod_plink_timer(sta,
873 dot11MeshHoldingTimeout(sdata)))
874 sta->ignore_plink_timer = true;
877 spin_unlock_bh(&sta->lock);
878 mesh_plink_frame_tx(sdata,
879 WLAN_SP_MESH_PEERING_CLOSE,
880 sta->sta.addr, llid, plid, reason);
883 del_timer(&sta->plink_timer);
884 sta->plink_state = NL80211_PLINK_ESTAB;
885 spin_unlock_bh(&sta->lock);
886 mesh_plink_inc_estab_count(sdata);
887 changed |= mesh_set_ht_prot_mode(sdata);
888 changed |= BSS_CHANGED_BEACON;
889 mpl_dbg("Mesh plink with %pM ESTABLISHED\n",
891 mesh_plink_frame_tx(sdata,
892 WLAN_SP_MESH_PEERING_CONFIRM,
893 sta->sta.addr, llid, plid, 0);
896 spin_unlock_bh(&sta->lock);
901 case NL80211_PLINK_ESTAB:
904 reason = cpu_to_le16(WLAN_REASON_MESH_CLOSE);
905 sta->reason = reason;
906 __mesh_plink_deactivate(sta);
907 sta->plink_state = NL80211_PLINK_HOLDING;
909 mod_plink_timer(sta, dot11MeshHoldingTimeout(sdata));
910 spin_unlock_bh(&sta->lock);
911 changed |= mesh_set_ht_prot_mode(sdata);
912 changed |= BSS_CHANGED_BEACON;
913 mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
914 sta->sta.addr, llid, plid, reason);
918 spin_unlock_bh(&sta->lock);
919 mesh_plink_frame_tx(sdata,
920 WLAN_SP_MESH_PEERING_CONFIRM,
921 sta->sta.addr, llid, plid, 0);
924 spin_unlock_bh(&sta->lock);
928 case NL80211_PLINK_HOLDING:
931 if (del_timer(&sta->plink_timer))
932 sta->ignore_plink_timer = 1;
933 mesh_plink_fsm_restart(sta);
934 spin_unlock_bh(&sta->lock);
941 reason = sta->reason;
942 spin_unlock_bh(&sta->lock);
943 mesh_plink_frame_tx(sdata, WLAN_SP_MESH_PEERING_CLOSE,
944 sta->sta.addr, llid, plid, reason);
947 spin_unlock_bh(&sta->lock);
951 /* should not get here, PLINK_BLOCKED is dealt with at the
952 * beginning of the function
954 spin_unlock_bh(&sta->lock);
961 ieee80211_bss_info_change_notify(sdata, changed);