63 				 struct sta_info *sta)  in rssi_threshold_check()  argument
67 	       (sta && (s8) -ewma_read(&sta->avg_signal) > rssi_threshold);  in rssi_threshold_check()
77 static inline void mesh_plink_fsm_restart(struct sta_info *sta)  in mesh_plink_fsm_restart()  argument
79 	sta->plink_state = NL80211_PLINK_LISTEN;  in mesh_plink_fsm_restart()
80 	sta->llid = sta->plid = sta->reason = 0;  in mesh_plink_fsm_restart()
81 	sta->plink_retries = 0;  in mesh_plink_fsm_restart()
99 	struct sta_info *sta;  in mesh_set_short_slot_time()  local
121 	list_for_each_entry_rcu(sta, &local->sta_list, list) {  in mesh_set_short_slot_time()
122 		if (sdata != sta->sdata ||  in mesh_set_short_slot_time()
123 		    sta->plink_state != NL80211_PLINK_ESTAB)  in mesh_set_short_slot_time()
127 		if (erp_rates & sta->sta.supp_rates[band])  in mesh_set_short_slot_time()
157 	struct sta_info *sta;  in mesh_set_ht_prot_mode()  local
171 	list_for_each_entry_rcu(sta, &local->sta_list, list) {  in mesh_set_ht_prot_mode()
172 		if (sdata != sta->sdata ||  in mesh_set_ht_prot_mode()
173 		    sta->plink_state != NL80211_PLINK_ESTAB)  in mesh_set_ht_prot_mode()
176 		if (sta->sta.bandwidth > IEEE80211_STA_RX_BW_20)  in mesh_set_ht_prot_mode()
179 		if (!sta->sta.ht_cap.ht_supported) {  in mesh_set_ht_prot_mode()
181 				       sta->sta.addr);  in mesh_set_ht_prot_mode()
186 		mpl_dbg(sdata, "HT20 sta (%pM) is present\n", sta->sta.addr);  in mesh_set_ht_prot_mode()
218 static u32 __mesh_plink_deactivate(struct sta_info *sta)  in __mesh_plink_deactivate()  argument
220 	struct ieee80211_sub_if_data *sdata = sta->sdata;  in __mesh_plink_deactivate()
223 	if (sta->plink_state == NL80211_PLINK_ESTAB)  in __mesh_plink_deactivate()
225 	sta->plink_state = NL80211_PLINK_BLOCKED;  in __mesh_plink_deactivate()
226 	mesh_path_flush_by_nexthop(sta);  in __mesh_plink_deactivate()
228 	ieee80211_mps_sta_status_update(sta);  in __mesh_plink_deactivate()
229 	changed |= ieee80211_mps_set_sta_local_pm(sta,  in __mesh_plink_deactivate()
242 u32 mesh_plink_deactivate(struct sta_info *sta)  in mesh_plink_deactivate()  argument
244 	struct ieee80211_sub_if_data *sdata = sta->sdata;  in mesh_plink_deactivate()
247 	spin_lock_bh(&sta->lock);  in mesh_plink_deactivate()
248 	changed = __mesh_plink_deactivate(sta);  in mesh_plink_deactivate()
249 	sta->reason = WLAN_REASON_MESH_PEER_CANCELED;  in mesh_plink_deactivate()
251 			    sta->sta.addr, sta->llid, sta->plid,  in mesh_plink_deactivate()
252 			    sta->reason);  in mesh_plink_deactivate()
253 	spin_unlock_bh(&sta->lock);  in mesh_plink_deactivate()
378 			       struct sta_info *sta,  in mesh_sta_info_init()  argument
385 	enum ieee80211_sta_rx_bandwidth bw = sta->sta.bandwidth;  in mesh_sta_info_init()
390 	spin_lock_bh(&sta->lock);  in mesh_sta_info_init()
391 	sta->last_rx = jiffies;  in mesh_sta_info_init()
394 	if (sta->plink_state == NL80211_PLINK_ESTAB)  in mesh_sta_info_init()
397 	if (sta->sta.supp_rates[band] != rates)  in mesh_sta_info_init()
399 	sta->sta.supp_rates[band] = rates;  in mesh_sta_info_init()
402 					      elems->ht_cap_elem, sta))  in mesh_sta_info_init()
405 	if (bw != sta->sta.bandwidth)  in mesh_sta_info_init()
412 		if (sta->sta.bandwidth != IEEE80211_STA_RX_BW_20)  in mesh_sta_info_init()
414 		sta->sta.bandwidth = IEEE80211_STA_RX_BW_20;  in mesh_sta_info_init()
418 		rate_control_rate_init(sta);  in mesh_sta_info_init()
420 		rate_control_rate_update(local, sband, sta, changed);  in mesh_sta_info_init()
422 	spin_unlock_bh(&sta->lock);  in mesh_sta_info_init()
428 	struct sta_info *sta;  in __mesh_sta_info_alloc()  local
433 	sta = sta_info_alloc(sdata, hw_addr, GFP_KERNEL);  in __mesh_sta_info_alloc()
434 	if (!sta)  in __mesh_sta_info_alloc()
437 	sta->plink_state = NL80211_PLINK_LISTEN;  in __mesh_sta_info_alloc()
438 	sta->sta.wme = true;  in __mesh_sta_info_alloc()
440 	sta_info_pre_move_state(sta, IEEE80211_STA_AUTH);  in __mesh_sta_info_alloc()
441 	sta_info_pre_move_state(sta, IEEE80211_STA_ASSOC);  in __mesh_sta_info_alloc()
442 	sta_info_pre_move_state(sta, IEEE80211_STA_AUTHORIZED);  in __mesh_sta_info_alloc()
444 	return sta;  in __mesh_sta_info_alloc()
451 	struct sta_info *sta = NULL;  in mesh_sta_info_alloc()  local
461 		sta = __mesh_sta_info_alloc(sdata, addr);  in mesh_sta_info_alloc()
463 	return sta;  in mesh_sta_info_alloc()
480 	struct sta_info *sta = NULL;  in mesh_sta_info_get()  local
483 	sta = sta_info_get(sdata, addr);  in mesh_sta_info_get()
484 	if (sta) {  in mesh_sta_info_get()
485 		mesh_sta_info_init(sdata, sta, elems, false);  in mesh_sta_info_get()
489 		sta = mesh_sta_info_alloc(sdata, addr, elems);  in mesh_sta_info_get()
490 		if (!sta) {  in mesh_sta_info_get()
495 		mesh_sta_info_init(sdata, sta, elems, true);  in mesh_sta_info_get()
497 		if (sta_info_insert_rcu(sta))  in mesh_sta_info_get()
501 	return sta;  in mesh_sta_info_get()
517 	struct sta_info *sta;  in mesh_neighbour_update()  local
520 	sta = mesh_sta_info_get(sdata, hw_addr, elems);  in mesh_neighbour_update()
521 	if (!sta)  in mesh_neighbour_update()
525 	    sta->plink_state == NL80211_PLINK_LISTEN &&  in mesh_neighbour_update()
528 	    rssi_threshold_check(sdata, sta))  in mesh_neighbour_update()
529 		changed = mesh_plink_open(sta);  in mesh_neighbour_update()
531 	ieee80211_mps_frame_release(sta, elems);  in mesh_neighbour_update()
539 	struct sta_info *sta;  in mesh_plink_timer()  local
550 	sta = (struct sta_info *) data;  in mesh_plink_timer()
552 	if (sta->sdata->local->quiescing)  in mesh_plink_timer()
555 	spin_lock_bh(&sta->lock);  in mesh_plink_timer()
562 	if (time_before(jiffies, sta->plink_timer.expires)) {  in mesh_plink_timer()
563 		mpl_dbg(sta->sdata,  in mesh_plink_timer()
565 			sta->sta.addr, mplstates[sta->plink_state]);  in mesh_plink_timer()
566 		spin_unlock_bh(&sta->lock);  in mesh_plink_timer()
571 	if (sta->plink_state == NL80211_PLINK_LISTEN ||  in mesh_plink_timer()
572 	    sta->plink_state == NL80211_PLINK_ESTAB) {  in mesh_plink_timer()
573 		mpl_dbg(sta->sdata,  in mesh_plink_timer()
575 			sta->sta.addr, mplstates[sta->plink_state]);  in mesh_plink_timer()
576 		spin_unlock_bh(&sta->lock);  in mesh_plink_timer()
580 	mpl_dbg(sta->sdata,  in mesh_plink_timer()
582 		sta->sta.addr, mplstates[sta->plink_state]);  in mesh_plink_timer()
583 	sdata = sta->sdata;  in mesh_plink_timer()
586 	switch (sta->plink_state) {  in mesh_plink_timer()
590 		if (sta->plink_retries < mshcfg->dot11MeshMaxRetries) {  in mesh_plink_timer()
592 			mpl_dbg(sta->sdata,  in mesh_plink_timer()
594 				sta->sta.addr, sta->plink_retries,  in mesh_plink_timer()
595 				sta->plink_timeout);  in mesh_plink_timer()
597 			sta->plink_timeout = sta->plink_timeout +  in mesh_plink_timer()
598 					     rand % sta->plink_timeout;  in mesh_plink_timer()
599 			++sta->plink_retries;  in mesh_plink_timer()
600 			mod_plink_timer(sta, sta->plink_timeout);  in mesh_plink_timer()
610 		sta->plink_state = NL80211_PLINK_HOLDING;  in mesh_plink_timer()
611 		mod_plink_timer(sta, mshcfg->dot11MeshHoldingTimeout);  in mesh_plink_timer()
616 		del_timer(&sta->plink_timer);  in mesh_plink_timer()
617 		mesh_plink_fsm_restart(sta);  in mesh_plink_timer()
622 	spin_unlock_bh(&sta->lock);  in mesh_plink_timer()
624 		mesh_plink_frame_tx(sdata, action, sta->sta.addr,  in mesh_plink_timer()
625 				    sta->llid, sta->plid, reason);  in mesh_plink_timer()
628 static inline void mesh_plink_timer_set(struct sta_info *sta, u32 timeout)  in mesh_plink_timer_set()  argument
630 	sta->plink_timer.expires = jiffies + msecs_to_jiffies(timeout);  in mesh_plink_timer_set()
631 	sta->plink_timer.data = (unsigned long) sta;  in mesh_plink_timer_set()
632 	sta->plink_timer.function = mesh_plink_timer;  in mesh_plink_timer_set()
633 	sta->plink_timeout = timeout;  in mesh_plink_timer_set()
634 	add_timer(&sta->plink_timer);  in mesh_plink_timer_set()
642 	struct sta_info *sta;  in llid_in_use()  local
645 	list_for_each_entry_rcu(sta, &local->sta_list, list) {  in llid_in_use()
646 		if (!memcmp(&sta->llid, &llid, sizeof(llid))) {  in llid_in_use()
669 u32 mesh_plink_open(struct sta_info *sta)  in mesh_plink_open()  argument
671 	struct ieee80211_sub_if_data *sdata = sta->sdata;  in mesh_plink_open()
674 	if (!test_sta_flag(sta, WLAN_STA_AUTH))  in mesh_plink_open()
677 	spin_lock_bh(&sta->lock);  in mesh_plink_open()
678 	sta->llid = mesh_get_new_llid(sdata);  in mesh_plink_open()
679 	if (sta->plink_state != NL80211_PLINK_LISTEN &&  in mesh_plink_open()
680 	    sta->plink_state != NL80211_PLINK_BLOCKED) {  in mesh_plink_open()
681 		spin_unlock_bh(&sta->lock);  in mesh_plink_open()
684 	sta->plink_state = NL80211_PLINK_OPN_SNT;  in mesh_plink_open()
685 	mesh_plink_timer_set(sta, sdata->u.mesh.mshcfg.dot11MeshRetryTimeout);  in mesh_plink_open()
686 	spin_unlock_bh(&sta->lock);  in mesh_plink_open()
689 		sta->sta.addr);  in mesh_plink_open()
695 			    sta->sta.addr, sta->llid, 0, 0);  in mesh_plink_open()
699 u32 mesh_plink_block(struct sta_info *sta)  in mesh_plink_block()  argument
703 	spin_lock_bh(&sta->lock);  in mesh_plink_block()
704 	changed = __mesh_plink_deactivate(sta);  in mesh_plink_block()
705 	sta->plink_state = NL80211_PLINK_BLOCKED;  in mesh_plink_block()
706 	spin_unlock_bh(&sta->lock);  in mesh_plink_block()
712 			     struct sta_info *sta,  in mesh_plink_close()  argument
720 	sta->reason = reason;  in mesh_plink_close()
721 	sta->plink_state = NL80211_PLINK_HOLDING;  in mesh_plink_close()
722 	mod_plink_timer(sta, mshcfg->dot11MeshHoldingTimeout);  in mesh_plink_close()
726 				struct sta_info *sta)  in mesh_plink_establish()  argument
731 	del_timer(&sta->plink_timer);  in mesh_plink_establish()
732 	sta->plink_state = NL80211_PLINK_ESTAB;  in mesh_plink_establish()
736 	mpl_dbg(sdata, "Mesh plink with %pM ESTABLISHED\n", sta->sta.addr);  in mesh_plink_establish()
737 	ieee80211_mps_sta_status_update(sta);  in mesh_plink_establish()
738 	changed |= ieee80211_mps_set_sta_local_pm(sta, mshcfg->power_mode);  in mesh_plink_establish()
752 			  struct sta_info *sta, enum plink_event event)  in mesh_plink_fsm()  argument
758 	mpl_dbg(sdata, "peer %pM in state %s got event %s\n", sta->sta.addr,  in mesh_plink_fsm()
759 		mplstates[sta->plink_state], mplevents[event]);  in mesh_plink_fsm()
761 	spin_lock_bh(&sta->lock);  in mesh_plink_fsm()
762 	switch (sta->plink_state) {  in mesh_plink_fsm()
766 			mesh_plink_fsm_restart(sta);  in mesh_plink_fsm()
769 			sta->plink_state = NL80211_PLINK_OPN_RCVD;  in mesh_plink_fsm()
770 			sta->llid = mesh_get_new_llid(sdata);  in mesh_plink_fsm()
771 			mesh_plink_timer_set(sta,  in mesh_plink_fsm()
787 			mesh_plink_close(sdata, sta, event);  in mesh_plink_fsm()
792 			sta->plink_state = NL80211_PLINK_OPN_RCVD;  in mesh_plink_fsm()
796 			sta->plink_state = NL80211_PLINK_CNF_RCVD;  in mesh_plink_fsm()
797 			mod_plink_timer(sta, mshcfg->dot11MeshConfirmTimeout);  in mesh_plink_fsm()
808 			mesh_plink_close(sdata, sta, event);  in mesh_plink_fsm()
815 			changed |= mesh_plink_establish(sdata, sta);  in mesh_plink_fsm()
826 			mesh_plink_close(sdata, sta, event);  in mesh_plink_fsm()
830 			changed |= mesh_plink_establish(sdata, sta);  in mesh_plink_fsm()
840 			changed |= __mesh_plink_deactivate(sta);  in mesh_plink_fsm()
843 			mesh_plink_close(sdata, sta, event);  in mesh_plink_fsm()
856 			del_timer(&sta->plink_timer);  in mesh_plink_fsm()
857 			mesh_plink_fsm_restart(sta);  in mesh_plink_fsm()
875 	spin_unlock_bh(&sta->lock);  in mesh_plink_fsm()
877 		mesh_plink_frame_tx(sdata, action, sta->sta.addr,  in mesh_plink_fsm()
878 				    sta->llid, sta->plid, sta->reason);  in mesh_plink_fsm()
884 					    sta->sta.addr, sta->llid,  in mesh_plink_fsm()
885 					    sta->plid, 0);  in mesh_plink_fsm()
907 		     struct sta_info *sta,  in mesh_plink_get_event()  argument
920 	if (!matches_local && !sta) {  in mesh_plink_get_event()
925 	if (!sta) {  in mesh_plink_get_event()
936 		if (!test_sta_flag(sta, WLAN_STA_AUTH)) {  in mesh_plink_get_event()
940 		if (sta->plink_state == NL80211_PLINK_BLOCKED)  in mesh_plink_get_event()
945 	if (!sta) {  in mesh_plink_get_event()
955 		    (sta->plid && sta->plid != plid))  in mesh_plink_get_event()
964 		    sta->llid != llid ||  in mesh_plink_get_event()
965 		    (sta->plid && sta->plid != plid))  in mesh_plink_get_event()
971 		if (sta->plink_state == NL80211_PLINK_ESTAB)  in mesh_plink_get_event()
982 		else if (sta->plid != plid)  in mesh_plink_get_event()
984 		else if (ie_len == 8 && sta->llid != llid)  in mesh_plink_get_event()
1004 	struct sta_info *sta;  in mesh_process_plink_frame()  local
1051 	sta = sta_info_get(sdata, mgmt->sa);  in mesh_process_plink_frame()
1054 	    !rssi_threshold_check(sdata, sta)) {  in mesh_process_plink_frame()
1061 	event = mesh_plink_get_event(sdata, sta, elems, ftype, llid, plid);  in mesh_process_plink_frame()
1066 		sta = mesh_sta_info_get(sdata, mgmt->sa, elems);  in mesh_process_plink_frame()
1067 		if (!sta) {  in mesh_process_plink_frame()
1071 		sta->plid = plid;  in mesh_process_plink_frame()
1072 	} else if (!sta && event == OPN_RJCT) {  in mesh_process_plink_frame()
1077 	} else if (!sta || event == PLINK_UNDEFINED) {  in mesh_process_plink_frame()
1083 	if (!sta->plid && event == CNF_ACPT)  in mesh_process_plink_frame()
1084 		sta->plid = plid;  in mesh_process_plink_frame()
1086 	changed |= mesh_plink_fsm(sdata, sta, event);  in mesh_process_plink_frame()