2 * Copyright 2002-2005, Instant802 Networks, Inc.
3 * Copyright 2006-2007 Jiri Benc <jbenc@suse.cz>
4 * Copyright 2013-2014 Intel Mobile Communications GmbH
5 * Copyright (C) 2015 - 2016 Intel Deutschland GmbH
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
12 #include <linux/module.h>
13 #include <linux/init.h>
14 #include <linux/etherdevice.h>
15 #include <linux/netdevice.h>
16 #include <linux/types.h>
17 #include <linux/slab.h>
18 #include <linux/skbuff.h>
19 #include <linux/if_arp.h>
20 #include <linux/timer.h>
21 #include <linux/rtnetlink.h>
23 #include <net/mac80211.h>
24 #include "ieee80211_i.h"
25 #include "driver-ops.h"
28 #include "debugfs_sta.h"
33 * DOC: STA information lifetime rules
35 * STA info structures (&struct sta_info) are managed in a hash table
36 * for faster lookup and a list for iteration. They are managed using
37 * RCU, i.e. access to the list and hash table is protected by RCU.
39 * Upon allocating a STA info structure with sta_info_alloc(), the caller
40 * owns that structure. It must then insert it into the hash table using
41 * either sta_info_insert() or sta_info_insert_rcu(); only in the latter
42 * case (which acquires an rcu read section but must not be called from
43 * within one) will the pointer still be valid after the call. Note that
44 * the caller may not do much with the STA info before inserting it, in
45 * particular, it may not start any mesh peer link management or add
48 * When the insertion fails (sta_info_insert()) returns non-zero), the
49 * structure will have been freed by sta_info_insert()!
51 * Station entries are added by mac80211 when you establish a link with a
52 * peer. This means different things for the different type of interfaces
53 * we support. For a regular station this mean we add the AP sta when we
54 * receive an association response from the AP. For IBSS this occurs when
55 * get to know about a peer on the same IBSS. For WDS we add the sta for
56 * the peer immediately upon device open. When using AP mode we add stations
57 * for each respective station upon request from userspace through nl80211.
59 * In order to remove a STA info structure, various sta_info_destroy_*()
60 * calls are available.
62 * There is no concept of ownership on a STA entry, each structure is
63 * owned by the global hash table/list until it is removed. All users of
64 * the structure need to be RCU protected so that the structure won't be
65 * freed before they are done using it.
68 static const struct rhashtable_params sta_rht_params = {
69 .nelem_hint = 3, /* start small */
70 .insecure_elasticity = true, /* Disable chain-length checks. */
71 .automatic_shrinking = true,
72 .head_offset = offsetof(struct sta_info, hash_node),
73 .key_offset = offsetof(struct sta_info, addr),
75 .hashfn = sta_addr_hash,
76 .max_size = CONFIG_MAC80211_STA_HASH_MAX_SIZE,
79 /* Caller must hold local->sta_mtx */
80 static int sta_info_hash_del(struct ieee80211_local *local,
83 return rhashtable_remove_fast(&local->sta_hash, &sta->hash_node,
87 static void __cleanup_single_sta(struct sta_info *sta)
90 struct tid_ampdu_tx *tid_tx;
91 struct ieee80211_sub_if_data *sdata = sta->sdata;
92 struct ieee80211_local *local = sdata->local;
93 struct fq *fq = &local->fq;
96 if (test_sta_flag(sta, WLAN_STA_PS_STA) ||
97 test_sta_flag(sta, WLAN_STA_PS_DRIVER) ||
98 test_sta_flag(sta, WLAN_STA_PS_DELIVER)) {
99 if (sta->sdata->vif.type == NL80211_IFTYPE_AP ||
100 sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
101 ps = &sdata->bss->ps;
102 else if (ieee80211_vif_is_mesh(&sdata->vif))
103 ps = &sdata->u.mesh.ps;
107 clear_sta_flag(sta, WLAN_STA_PS_STA);
108 clear_sta_flag(sta, WLAN_STA_PS_DRIVER);
109 clear_sta_flag(sta, WLAN_STA_PS_DELIVER);
111 atomic_dec(&ps->num_sta_ps);
114 if (sta->sta.txq[0]) {
115 for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) {
116 struct txq_info *txqi = to_txq_info(sta->sta.txq[i]);
118 spin_lock_bh(&fq->lock);
119 ieee80211_txq_purge(local, txqi);
120 spin_unlock_bh(&fq->lock);
124 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
125 local->total_ps_buffered -= skb_queue_len(&sta->ps_tx_buf[ac]);
126 ieee80211_purge_tx_queue(&local->hw, &sta->ps_tx_buf[ac]);
127 ieee80211_purge_tx_queue(&local->hw, &sta->tx_filtered[ac]);
130 if (ieee80211_vif_is_mesh(&sdata->vif))
131 mesh_sta_cleanup(sta);
133 cancel_work_sync(&sta->drv_deliver_wk);
136 * Destroy aggregation state here. It would be nice to wait for the
137 * driver to finish aggregation stop and then clean up, but for now
138 * drivers have to handle aggregation stop being requested, followed
139 * directly by station destruction.
141 for (i = 0; i < IEEE80211_NUM_TIDS; i++) {
142 kfree(sta->ampdu_mlme.tid_start_tx[i]);
143 tid_tx = rcu_dereference_raw(sta->ampdu_mlme.tid_tx[i]);
146 ieee80211_purge_tx_queue(&local->hw, &tid_tx->pending);
151 static void cleanup_single_sta(struct sta_info *sta)
153 struct ieee80211_sub_if_data *sdata = sta->sdata;
154 struct ieee80211_local *local = sdata->local;
156 __cleanup_single_sta(sta);
157 sta_info_free(local, sta);
160 /* protected by RCU */
161 struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata,
164 struct ieee80211_local *local = sdata->local;
165 struct sta_info *sta;
166 struct rhash_head *tmp;
167 const struct bucket_table *tbl;
170 tbl = rht_dereference_rcu(local->sta_hash.tbl, &local->sta_hash);
172 for_each_sta_info(local, tbl, addr, sta, tmp) {
173 if (sta->sdata == sdata) {
175 /* this is safe as the caller must already hold
176 * another rcu read section or the mutex
186 * Get sta info either from the specified interface
187 * or from one of its vlans
189 struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata,
192 struct ieee80211_local *local = sdata->local;
193 struct sta_info *sta;
194 struct rhash_head *tmp;
195 const struct bucket_table *tbl;
198 tbl = rht_dereference_rcu(local->sta_hash.tbl, &local->sta_hash);
200 for_each_sta_info(local, tbl, addr, sta, tmp) {
201 if (sta->sdata == sdata ||
202 (sta->sdata->bss && sta->sdata->bss == sdata->bss)) {
204 /* this is safe as the caller must already hold
205 * another rcu read section or the mutex
214 struct sta_info *sta_info_get_by_idx(struct ieee80211_sub_if_data *sdata,
217 struct ieee80211_local *local = sdata->local;
218 struct sta_info *sta;
221 list_for_each_entry_rcu(sta, &local->sta_list, list) {
222 if (sdata != sta->sdata)
235 * sta_info_free - free STA
237 * @local: pointer to the global information
238 * @sta: STA info to free
240 * This function must undo everything done by sta_info_alloc()
241 * that may happen before sta_info_insert(). It may only be
242 * called when sta_info_insert() has not been attempted (and
243 * if that fails, the station is freed anyway.)
245 void sta_info_free(struct ieee80211_local *local, struct sta_info *sta)
248 rate_control_free_sta(sta);
250 sta_dbg(sta->sdata, "Destroyed STA %pM\n", sta->sta.addr);
253 kfree(to_txq_info(sta->sta.txq[0]));
254 kfree(rcu_dereference_raw(sta->sta.rates));
255 #ifdef CONFIG_MAC80211_MESH
258 free_percpu(sta->pcpu_rx_stats);
262 /* Caller must hold local->sta_mtx */
263 static int sta_info_hash_add(struct ieee80211_local *local,
264 struct sta_info *sta)
266 return rhashtable_insert_fast(&local->sta_hash, &sta->hash_node,
270 static void sta_deliver_ps_frames(struct work_struct *wk)
272 struct sta_info *sta;
274 sta = container_of(wk, struct sta_info, drv_deliver_wk);
280 if (!test_sta_flag(sta, WLAN_STA_PS_STA))
281 ieee80211_sta_ps_deliver_wakeup(sta);
282 else if (test_and_clear_sta_flag(sta, WLAN_STA_PSPOLL))
283 ieee80211_sta_ps_deliver_poll_response(sta);
284 else if (test_and_clear_sta_flag(sta, WLAN_STA_UAPSD))
285 ieee80211_sta_ps_deliver_uapsd(sta);
289 static int sta_prepare_rate_control(struct ieee80211_local *local,
290 struct sta_info *sta, gfp_t gfp)
292 if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL))
295 sta->rate_ctrl = local->rate_ctrl;
296 sta->rate_ctrl_priv = rate_control_alloc_sta(sta->rate_ctrl,
298 if (!sta->rate_ctrl_priv)
304 struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
305 const u8 *addr, gfp_t gfp)
307 struct ieee80211_local *local = sdata->local;
308 struct ieee80211_hw *hw = &local->hw;
309 struct sta_info *sta;
312 sta = kzalloc(sizeof(*sta) + hw->sta_data_size, gfp);
316 if (ieee80211_hw_check(hw, USES_RSS)) {
318 alloc_percpu(struct ieee80211_sta_rx_stats);
319 if (!sta->pcpu_rx_stats)
323 spin_lock_init(&sta->lock);
324 spin_lock_init(&sta->ps_lock);
325 INIT_WORK(&sta->drv_deliver_wk, sta_deliver_ps_frames);
326 INIT_WORK(&sta->ampdu_mlme.work, ieee80211_ba_session_work);
327 mutex_init(&sta->ampdu_mlme.mtx);
328 #ifdef CONFIG_MAC80211_MESH
329 if (ieee80211_vif_is_mesh(&sdata->vif)) {
330 sta->mesh = kzalloc(sizeof(*sta->mesh), gfp);
333 spin_lock_init(&sta->mesh->plink_lock);
334 if (ieee80211_vif_is_mesh(&sdata->vif) &&
335 !sdata->u.mesh.user_mpm)
336 init_timer(&sta->mesh->plink_timer);
337 sta->mesh->nonpeer_pm = NL80211_MESH_POWER_ACTIVE;
341 memcpy(sta->addr, addr, ETH_ALEN);
342 memcpy(sta->sta.addr, addr, ETH_ALEN);
343 sta->sta.max_rx_aggregation_subframes =
344 local->hw.max_rx_aggregation_subframes;
348 sta->rx_stats.last_rx = jiffies;
350 u64_stats_init(&sta->rx_stats.syncp);
352 sta->sta_state = IEEE80211_STA_NONE;
354 /* Mark TID as unreserved */
355 sta->reserved_tid = IEEE80211_TID_UNRESERVED;
357 sta->last_connected = ktime_get_seconds();
358 ewma_signal_init(&sta->rx_stats_avg.signal);
359 for (i = 0; i < ARRAY_SIZE(sta->rx_stats_avg.chain_signal); i++)
360 ewma_signal_init(&sta->rx_stats_avg.chain_signal[i]);
362 if (local->ops->wake_tx_queue) {
364 int size = sizeof(struct txq_info) +
365 ALIGN(hw->txq_data_size, sizeof(void *));
367 txq_data = kcalloc(ARRAY_SIZE(sta->sta.txq), size, gfp);
371 for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) {
372 struct txq_info *txq = txq_data + i * size;
374 ieee80211_txq_init(sdata, sta, txq, i);
378 if (sta_prepare_rate_control(local, sta, gfp))
381 for (i = 0; i < IEEE80211_NUM_TIDS; i++) {
383 * timer_to_tid must be initialized with identity mapping
384 * to enable session_timer's data differentiation. See
385 * sta_rx_agg_session_timer_expired for usage.
387 sta->timer_to_tid[i] = i;
389 for (i = 0; i < IEEE80211_NUM_ACS; i++) {
390 skb_queue_head_init(&sta->ps_tx_buf[i]);
391 skb_queue_head_init(&sta->tx_filtered[i]);
394 for (i = 0; i < IEEE80211_NUM_TIDS; i++)
395 sta->last_seq_ctrl[i] = cpu_to_le16(USHRT_MAX);
397 sta->sta.smps_mode = IEEE80211_SMPS_OFF;
398 if (sdata->vif.type == NL80211_IFTYPE_AP ||
399 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
400 struct ieee80211_supported_band *sband =
401 hw->wiphy->bands[ieee80211_get_sdata_band(sdata)];
402 u8 smps = (sband->ht_cap.cap & IEEE80211_HT_CAP_SM_PS) >>
403 IEEE80211_HT_CAP_SM_PS_SHIFT;
405 * Assume that hostapd advertises our caps in the beacon and
406 * this is the known_smps_mode for a station that just assciated
409 case WLAN_HT_SMPS_CONTROL_DISABLED:
410 sta->known_smps_mode = IEEE80211_SMPS_OFF;
412 case WLAN_HT_SMPS_CONTROL_STATIC:
413 sta->known_smps_mode = IEEE80211_SMPS_STATIC;
415 case WLAN_HT_SMPS_CONTROL_DYNAMIC:
416 sta->known_smps_mode = IEEE80211_SMPS_DYNAMIC;
423 sta->sta.max_rc_amsdu_len = IEEE80211_MAX_MPDU_LEN_HT_BA;
425 sta_dbg(sdata, "Allocated STA %pM\n", sta->sta.addr);
431 kfree(to_txq_info(sta->sta.txq[0]));
433 #ifdef CONFIG_MAC80211_MESH
440 static int sta_info_insert_check(struct sta_info *sta)
442 struct ieee80211_sub_if_data *sdata = sta->sdata;
445 * Can't be a WARN_ON because it can be triggered through a race:
446 * something inserts a STA (on one CPU) without holding the RTNL
447 * and another CPU turns off the net device.
449 if (unlikely(!ieee80211_sdata_running(sdata)))
452 if (WARN_ON(ether_addr_equal(sta->sta.addr, sdata->vif.addr) ||
453 is_multicast_ether_addr(sta->sta.addr)))
456 /* Strictly speaking this isn't necessary as we hold the mutex, but
457 * the rhashtable code can't really deal with that distinction. We
458 * do require the mutex for correctness though.
461 lockdep_assert_held(&sdata->local->sta_mtx);
462 if (ieee80211_hw_check(&sdata->local->hw, NEEDS_UNIQUE_STA_ADDR) &&
463 ieee80211_find_sta_by_ifaddr(&sdata->local->hw, sta->addr, NULL)) {
472 static int sta_info_insert_drv_state(struct ieee80211_local *local,
473 struct ieee80211_sub_if_data *sdata,
474 struct sta_info *sta)
476 enum ieee80211_sta_state state;
479 for (state = IEEE80211_STA_NOTEXIST; state < sta->sta_state; state++) {
480 err = drv_sta_state(local, sdata, sta, state, state + 1);
487 * Drivers using legacy sta_add/sta_remove callbacks only
488 * get uploaded set to true after sta_add is called.
490 if (!local->ops->sta_add)
491 sta->uploaded = true;
495 if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
497 "failed to move IBSS STA %pM to state %d (%d) - keeping it anyway\n",
498 sta->sta.addr, state + 1, err);
502 /* unwind on error */
503 for (; state > IEEE80211_STA_NOTEXIST; state--)
504 WARN_ON(drv_sta_state(local, sdata, sta, state, state - 1));
510 * should be called with sta_mtx locked
511 * this function replaces the mutex lock
514 static int sta_info_insert_finish(struct sta_info *sta) __acquires(RCU)
516 struct ieee80211_local *local = sta->local;
517 struct ieee80211_sub_if_data *sdata = sta->sdata;
518 struct station_info *sinfo;
521 lockdep_assert_held(&local->sta_mtx);
523 sinfo = kzalloc(sizeof(struct station_info), GFP_KERNEL);
529 /* check if STA exists already */
530 if (sta_info_get_bss(sdata, sta->sta.addr)) {
536 local->sta_generation++;
539 /* simplify things and don't accept BA sessions yet */
540 set_sta_flag(sta, WLAN_STA_BLOCK_BA);
542 /* make the station visible */
543 err = sta_info_hash_add(local, sta);
547 list_add_tail_rcu(&sta->list, &local->sta_list);
550 err = sta_info_insert_drv_state(local, sdata, sta);
554 set_sta_flag(sta, WLAN_STA_INSERTED);
555 /* accept BA sessions now */
556 clear_sta_flag(sta, WLAN_STA_BLOCK_BA);
558 ieee80211_sta_debugfs_add(sta);
559 rate_control_add_sta_debugfs(sta);
561 sinfo->generation = local->sta_generation;
562 cfg80211_new_sta(sdata->dev, sta->sta.addr, sinfo, GFP_KERNEL);
565 sta_dbg(sdata, "Inserted STA %pM\n", sta->sta.addr);
567 /* move reference to rcu-protected */
569 mutex_unlock(&local->sta_mtx);
571 if (ieee80211_vif_is_mesh(&sdata->vif))
572 mesh_accept_plinks_update(sdata);
576 sta_info_hash_del(local, sta);
577 list_del_rcu(&sta->list);
581 __cleanup_single_sta(sta);
583 mutex_unlock(&local->sta_mtx);
589 int sta_info_insert_rcu(struct sta_info *sta) __acquires(RCU)
591 struct ieee80211_local *local = sta->local;
596 mutex_lock(&local->sta_mtx);
598 err = sta_info_insert_check(sta);
600 mutex_unlock(&local->sta_mtx);
605 err = sta_info_insert_finish(sta);
611 sta_info_free(local, sta);
615 int sta_info_insert(struct sta_info *sta)
617 int err = sta_info_insert_rcu(sta);
624 static inline void __bss_tim_set(u8 *tim, u16 id)
627 * This format has been mandated by the IEEE specifications,
628 * so this line may not be changed to use the __set_bit() format.
630 tim[id / 8] |= (1 << (id % 8));
633 static inline void __bss_tim_clear(u8 *tim, u16 id)
636 * This format has been mandated by the IEEE specifications,
637 * so this line may not be changed to use the __clear_bit() format.
639 tim[id / 8] &= ~(1 << (id % 8));
642 static inline bool __bss_tim_get(u8 *tim, u16 id)
645 * This format has been mandated by the IEEE specifications,
646 * so this line may not be changed to use the test_bit() format.
648 return tim[id / 8] & (1 << (id % 8));
651 static unsigned long ieee80211_tids_for_ac(int ac)
653 /* If we ever support TIDs > 7, this obviously needs to be adjusted */
655 case IEEE80211_AC_VO:
656 return BIT(6) | BIT(7);
657 case IEEE80211_AC_VI:
658 return BIT(4) | BIT(5);
659 case IEEE80211_AC_BE:
660 return BIT(0) | BIT(3);
661 case IEEE80211_AC_BK:
662 return BIT(1) | BIT(2);
669 static void __sta_info_recalc_tim(struct sta_info *sta, bool ignore_pending)
671 struct ieee80211_local *local = sta->local;
673 bool indicate_tim = false;
674 u8 ignore_for_tim = sta->sta.uapsd_queues;
676 u16 id = sta->sta.aid;
678 if (sta->sdata->vif.type == NL80211_IFTYPE_AP ||
679 sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
680 if (WARN_ON_ONCE(!sta->sdata->bss))
683 ps = &sta->sdata->bss->ps;
684 #ifdef CONFIG_MAC80211_MESH
685 } else if (ieee80211_vif_is_mesh(&sta->sdata->vif)) {
686 ps = &sta->sdata->u.mesh.ps;
692 /* No need to do anything if the driver does all */
693 if (ieee80211_hw_check(&local->hw, AP_LINK_PS))
700 * If all ACs are delivery-enabled then we should build
701 * the TIM bit for all ACs anyway; if only some are then
702 * we ignore those and build the TIM bit using only the
705 if (ignore_for_tim == BIT(IEEE80211_NUM_ACS) - 1)
709 ignore_for_tim = BIT(IEEE80211_NUM_ACS) - 1;
711 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
714 if (ignore_for_tim & BIT(ac))
717 indicate_tim |= !skb_queue_empty(&sta->tx_filtered[ac]) ||
718 !skb_queue_empty(&sta->ps_tx_buf[ac]);
722 tids = ieee80211_tids_for_ac(ac);
725 sta->driver_buffered_tids & tids;
727 sta->txq_buffered_tids & tids;
731 spin_lock_bh(&local->tim_lock);
733 if (indicate_tim == __bss_tim_get(ps->tim, id))
737 __bss_tim_set(ps->tim, id);
739 __bss_tim_clear(ps->tim, id);
741 if (local->ops->set_tim && !WARN_ON(sta->dead)) {
742 local->tim_in_locked_section = true;
743 drv_set_tim(local, &sta->sta, indicate_tim);
744 local->tim_in_locked_section = false;
748 spin_unlock_bh(&local->tim_lock);
751 void sta_info_recalc_tim(struct sta_info *sta)
753 __sta_info_recalc_tim(sta, false);
756 static bool sta_info_buffer_expired(struct sta_info *sta, struct sk_buff *skb)
758 struct ieee80211_tx_info *info;
764 info = IEEE80211_SKB_CB(skb);
766 /* Timeout: (2 * listen_interval * beacon_int * 1024 / 1000000) sec */
767 timeout = (sta->listen_interval *
768 sta->sdata->vif.bss_conf.beacon_int *
770 if (timeout < STA_TX_BUFFER_EXPIRE)
771 timeout = STA_TX_BUFFER_EXPIRE;
772 return time_after(jiffies, info->control.jiffies + timeout);
776 static bool sta_info_cleanup_expire_buffered_ac(struct ieee80211_local *local,
777 struct sta_info *sta, int ac)
783 * First check for frames that should expire on the filtered
784 * queue. Frames here were rejected by the driver and are on
785 * a separate queue to avoid reordering with normal PS-buffered
786 * frames. They also aren't accounted for right now in the
787 * total_ps_buffered counter.
790 spin_lock_irqsave(&sta->tx_filtered[ac].lock, flags);
791 skb = skb_peek(&sta->tx_filtered[ac]);
792 if (sta_info_buffer_expired(sta, skb))
793 skb = __skb_dequeue(&sta->tx_filtered[ac]);
796 spin_unlock_irqrestore(&sta->tx_filtered[ac].lock, flags);
799 * Frames are queued in order, so if this one
800 * hasn't expired yet we can stop testing. If
801 * we actually reached the end of the queue we
802 * also need to stop, of course.
806 ieee80211_free_txskb(&local->hw, skb);
810 * Now also check the normal PS-buffered queue, this will
811 * only find something if the filtered queue was emptied
812 * since the filtered frames are all before the normal PS
816 spin_lock_irqsave(&sta->ps_tx_buf[ac].lock, flags);
817 skb = skb_peek(&sta->ps_tx_buf[ac]);
818 if (sta_info_buffer_expired(sta, skb))
819 skb = __skb_dequeue(&sta->ps_tx_buf[ac]);
822 spin_unlock_irqrestore(&sta->ps_tx_buf[ac].lock, flags);
825 * frames are queued in order, so if this one
826 * hasn't expired yet (or we reached the end of
827 * the queue) we can stop testing
832 local->total_ps_buffered--;
833 ps_dbg(sta->sdata, "Buffered frame expired (STA %pM)\n",
835 ieee80211_free_txskb(&local->hw, skb);
839 * Finally, recalculate the TIM bit for this station -- it might
840 * now be clear because the station was too slow to retrieve its
843 sta_info_recalc_tim(sta);
846 * Return whether there are any frames still buffered, this is
847 * used to check whether the cleanup timer still needs to run,
848 * if there are no frames we don't need to rearm the timer.
850 return !(skb_queue_empty(&sta->ps_tx_buf[ac]) &&
851 skb_queue_empty(&sta->tx_filtered[ac]));
854 static bool sta_info_cleanup_expire_buffered(struct ieee80211_local *local,
855 struct sta_info *sta)
857 bool have_buffered = false;
860 /* This is only necessary for stations on BSS/MBSS interfaces */
861 if (!sta->sdata->bss &&
862 !ieee80211_vif_is_mesh(&sta->sdata->vif))
865 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
867 sta_info_cleanup_expire_buffered_ac(local, sta, ac);
869 return have_buffered;
872 static int __must_check __sta_info_destroy_part1(struct sta_info *sta)
874 struct ieee80211_local *local;
875 struct ieee80211_sub_if_data *sdata;
886 lockdep_assert_held(&local->sta_mtx);
889 * Before removing the station from the driver and
890 * rate control, it might still start new aggregation
891 * sessions -- block that to make sure the tear-down
892 * will be sufficient.
894 set_sta_flag(sta, WLAN_STA_BLOCK_BA);
895 ieee80211_sta_tear_down_BA_sessions(sta, AGG_STOP_DESTROY_STA);
898 * Before removing the station from the driver there might be pending
899 * rx frames on RSS queues sent prior to the disassociation - wait for
900 * all such frames to be processed.
902 drv_sync_rx_queues(local, sta);
904 ret = sta_info_hash_del(local, sta);
909 * for TDLS peers, make sure to return to the base channel before
912 if (test_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL)) {
913 drv_tdls_cancel_channel_switch(local, sdata, &sta->sta);
914 clear_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL);
917 list_del_rcu(&sta->list);
920 drv_sta_pre_rcu_remove(local, sta->sdata, sta);
922 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
923 rcu_access_pointer(sdata->u.vlan.sta) == sta)
924 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
929 static void __sta_info_destroy_part2(struct sta_info *sta)
931 struct ieee80211_local *local = sta->local;
932 struct ieee80211_sub_if_data *sdata = sta->sdata;
933 struct station_info *sinfo;
937 * NOTE: This assumes at least synchronize_net() was done
938 * after _part1 and before _part2!
942 lockdep_assert_held(&local->sta_mtx);
944 /* now keys can no longer be reached */
945 ieee80211_free_sta_keys(local, sta);
947 /* disable TIM bit - last chance to tell driver */
948 __sta_info_recalc_tim(sta, true);
953 local->sta_generation++;
955 while (sta->sta_state > IEEE80211_STA_NONE) {
956 ret = sta_info_move_state(sta, sta->sta_state - 1);
964 ret = drv_sta_state(local, sdata, sta, IEEE80211_STA_NONE,
965 IEEE80211_STA_NOTEXIST);
966 WARN_ON_ONCE(ret != 0);
969 sta_dbg(sdata, "Removed STA %pM\n", sta->sta.addr);
971 sinfo = kzalloc(sizeof(*sinfo), GFP_KERNEL);
973 sta_set_sinfo(sta, sinfo);
974 cfg80211_del_sta_sinfo(sdata->dev, sta->sta.addr, sinfo, GFP_KERNEL);
977 rate_control_remove_sta_debugfs(sta);
978 ieee80211_sta_debugfs_remove(sta);
980 cleanup_single_sta(sta);
983 int __must_check __sta_info_destroy(struct sta_info *sta)
985 int err = __sta_info_destroy_part1(sta);
992 __sta_info_destroy_part2(sta);
997 int sta_info_destroy_addr(struct ieee80211_sub_if_data *sdata, const u8 *addr)
999 struct sta_info *sta;
1002 mutex_lock(&sdata->local->sta_mtx);
1003 sta = sta_info_get(sdata, addr);
1004 ret = __sta_info_destroy(sta);
1005 mutex_unlock(&sdata->local->sta_mtx);
1010 int sta_info_destroy_addr_bss(struct ieee80211_sub_if_data *sdata,
1013 struct sta_info *sta;
1016 mutex_lock(&sdata->local->sta_mtx);
1017 sta = sta_info_get_bss(sdata, addr);
1018 ret = __sta_info_destroy(sta);
1019 mutex_unlock(&sdata->local->sta_mtx);
1024 static void sta_info_cleanup(unsigned long data)
1026 struct ieee80211_local *local = (struct ieee80211_local *) data;
1027 struct sta_info *sta;
1028 bool timer_needed = false;
1031 list_for_each_entry_rcu(sta, &local->sta_list, list)
1032 if (sta_info_cleanup_expire_buffered(local, sta))
1033 timer_needed = true;
1036 if (local->quiescing)
1042 mod_timer(&local->sta_cleanup,
1043 round_jiffies(jiffies + STA_INFO_CLEANUP_INTERVAL));
1046 u32 sta_addr_hash(const void *key, u32 length, u32 seed)
1048 return jhash(key, ETH_ALEN, seed);
1051 int sta_info_init(struct ieee80211_local *local)
1055 err = rhashtable_init(&local->sta_hash, &sta_rht_params);
1059 spin_lock_init(&local->tim_lock);
1060 mutex_init(&local->sta_mtx);
1061 INIT_LIST_HEAD(&local->sta_list);
1063 setup_timer(&local->sta_cleanup, sta_info_cleanup,
1064 (unsigned long)local);
1068 void sta_info_stop(struct ieee80211_local *local)
1070 del_timer_sync(&local->sta_cleanup);
1071 rhashtable_destroy(&local->sta_hash);
1075 int __sta_info_flush(struct ieee80211_sub_if_data *sdata, bool vlans)
1077 struct ieee80211_local *local = sdata->local;
1078 struct sta_info *sta, *tmp;
1079 LIST_HEAD(free_list);
1084 WARN_ON(vlans && sdata->vif.type != NL80211_IFTYPE_AP);
1085 WARN_ON(vlans && !sdata->bss);
1087 mutex_lock(&local->sta_mtx);
1088 list_for_each_entry_safe(sta, tmp, &local->sta_list, list) {
1089 if (sdata == sta->sdata ||
1090 (vlans && sdata->bss == sta->sdata->bss)) {
1091 if (!WARN_ON(__sta_info_destroy_part1(sta)))
1092 list_add(&sta->free_list, &free_list);
1097 if (!list_empty(&free_list)) {
1099 list_for_each_entry_safe(sta, tmp, &free_list, free_list)
1100 __sta_info_destroy_part2(sta);
1102 mutex_unlock(&local->sta_mtx);
1107 void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata,
1108 unsigned long exp_time)
1110 struct ieee80211_local *local = sdata->local;
1111 struct sta_info *sta, *tmp;
1113 mutex_lock(&local->sta_mtx);
1115 list_for_each_entry_safe(sta, tmp, &local->sta_list, list) {
1116 unsigned long last_active = ieee80211_sta_last_active(sta);
1118 if (sdata != sta->sdata)
1121 if (time_is_before_jiffies(last_active + exp_time)) {
1122 sta_dbg(sta->sdata, "expiring inactive STA %pM\n",
1125 if (ieee80211_vif_is_mesh(&sdata->vif) &&
1126 test_sta_flag(sta, WLAN_STA_PS_STA))
1127 atomic_dec(&sdata->u.mesh.ps.num_sta_ps);
1129 WARN_ON(__sta_info_destroy(sta));
1133 mutex_unlock(&local->sta_mtx);
1136 struct ieee80211_sta *ieee80211_find_sta_by_ifaddr(struct ieee80211_hw *hw,
1138 const u8 *localaddr)
1140 struct ieee80211_local *local = hw_to_local(hw);
1141 struct sta_info *sta;
1142 struct rhash_head *tmp;
1143 const struct bucket_table *tbl;
1145 tbl = rht_dereference_rcu(local->sta_hash.tbl, &local->sta_hash);
1148 * Just return a random station if localaddr is NULL
1149 * ... first in list.
1151 for_each_sta_info(local, tbl, addr, sta, tmp) {
1153 !ether_addr_equal(sta->sdata->vif.addr, localaddr))
1162 EXPORT_SYMBOL_GPL(ieee80211_find_sta_by_ifaddr);
1164 struct ieee80211_sta *ieee80211_find_sta(struct ieee80211_vif *vif,
1167 struct sta_info *sta;
1172 sta = sta_info_get_bss(vif_to_sdata(vif), addr);
1181 EXPORT_SYMBOL(ieee80211_find_sta);
1183 /* powersave support code */
1184 void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta)
1186 struct ieee80211_sub_if_data *sdata = sta->sdata;
1187 struct ieee80211_local *local = sdata->local;
1188 struct sk_buff_head pending;
1189 int filtered = 0, buffered = 0, ac, i;
1190 unsigned long flags;
1193 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
1194 sdata = container_of(sdata->bss, struct ieee80211_sub_if_data,
1197 if (sdata->vif.type == NL80211_IFTYPE_AP)
1198 ps = &sdata->bss->ps;
1199 else if (ieee80211_vif_is_mesh(&sdata->vif))
1200 ps = &sdata->u.mesh.ps;
1204 clear_sta_flag(sta, WLAN_STA_SP);
1206 BUILD_BUG_ON(BITS_TO_LONGS(IEEE80211_NUM_TIDS) > 1);
1207 sta->driver_buffered_tids = 0;
1208 sta->txq_buffered_tids = 0;
1210 if (!ieee80211_hw_check(&local->hw, AP_LINK_PS))
1211 drv_sta_notify(local, sdata, STA_NOTIFY_AWAKE, &sta->sta);
1213 if (sta->sta.txq[0]) {
1214 for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) {
1215 struct txq_info *txqi = to_txq_info(sta->sta.txq[i]);
1217 if (!txqi->tin.backlog_packets)
1220 drv_wake_tx_queue(local, txqi);
1224 skb_queue_head_init(&pending);
1226 /* sync with ieee80211_tx_h_unicast_ps_buf */
1227 spin_lock(&sta->ps_lock);
1228 /* Send all buffered frames to the station */
1229 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
1230 int count = skb_queue_len(&pending), tmp;
1232 spin_lock_irqsave(&sta->tx_filtered[ac].lock, flags);
1233 skb_queue_splice_tail_init(&sta->tx_filtered[ac], &pending);
1234 spin_unlock_irqrestore(&sta->tx_filtered[ac].lock, flags);
1235 tmp = skb_queue_len(&pending);
1236 filtered += tmp - count;
1239 spin_lock_irqsave(&sta->ps_tx_buf[ac].lock, flags);
1240 skb_queue_splice_tail_init(&sta->ps_tx_buf[ac], &pending);
1241 spin_unlock_irqrestore(&sta->ps_tx_buf[ac].lock, flags);
1242 tmp = skb_queue_len(&pending);
1243 buffered += tmp - count;
1246 ieee80211_add_pending_skbs(local, &pending);
1248 /* now we're no longer in the deliver code */
1249 clear_sta_flag(sta, WLAN_STA_PS_DELIVER);
1251 /* The station might have polled and then woken up before we responded,
1252 * so clear these flags now to avoid them sticking around.
1254 clear_sta_flag(sta, WLAN_STA_PSPOLL);
1255 clear_sta_flag(sta, WLAN_STA_UAPSD);
1256 spin_unlock(&sta->ps_lock);
1258 atomic_dec(&ps->num_sta_ps);
1260 /* This station just woke up and isn't aware of our SMPS state */
1261 if (!ieee80211_vif_is_mesh(&sdata->vif) &&
1262 !ieee80211_smps_is_restrictive(sta->known_smps_mode,
1263 sdata->smps_mode) &&
1264 sta->known_smps_mode != sdata->bss->req_smps &&
1265 sta_info_tx_streams(sta) != 1) {
1267 "%pM just woke up and MIMO capable - update SMPS\n",
1269 ieee80211_send_smps_action(sdata, sdata->bss->req_smps,
1271 sdata->vif.bss_conf.bssid);
1274 local->total_ps_buffered -= buffered;
1276 sta_info_recalc_tim(sta);
1279 "STA %pM aid %d sending %d filtered/%d PS frames since STA not sleeping anymore\n",
1280 sta->sta.addr, sta->sta.aid, filtered, buffered);
1282 ieee80211_check_fast_xmit(sta);
1285 static void ieee80211_send_null_response(struct sta_info *sta, int tid,
1286 enum ieee80211_frame_release_type reason,
1287 bool call_driver, bool more_data)
1289 struct ieee80211_sub_if_data *sdata = sta->sdata;
1290 struct ieee80211_local *local = sdata->local;
1291 struct ieee80211_qos_hdr *nullfunc;
1292 struct sk_buff *skb;
1293 int size = sizeof(*nullfunc);
1295 bool qos = sta->sta.wme;
1296 struct ieee80211_tx_info *info;
1297 struct ieee80211_chanctx_conf *chanctx_conf;
1300 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
1301 IEEE80211_STYPE_QOS_NULLFUNC |
1302 IEEE80211_FCTL_FROMDS);
1305 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
1306 IEEE80211_STYPE_NULLFUNC |
1307 IEEE80211_FCTL_FROMDS);
1310 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
1314 skb_reserve(skb, local->hw.extra_tx_headroom);
1316 nullfunc = (void *) skb_put(skb, size);
1317 nullfunc->frame_control = fc;
1318 nullfunc->duration_id = 0;
1319 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
1320 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
1321 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
1322 nullfunc->seq_ctrl = 0;
1324 skb->priority = tid;
1325 skb_set_queue_mapping(skb, ieee802_1d_to_ac[tid]);
1327 nullfunc->qos_ctrl = cpu_to_le16(tid);
1329 if (reason == IEEE80211_FRAME_RELEASE_UAPSD) {
1330 nullfunc->qos_ctrl |=
1331 cpu_to_le16(IEEE80211_QOS_CTL_EOSP);
1333 nullfunc->frame_control |=
1334 cpu_to_le16(IEEE80211_FCTL_MOREDATA);
1338 info = IEEE80211_SKB_CB(skb);
1341 * Tell TX path to send this frame even though the
1342 * STA may still remain is PS mode after this frame
1343 * exchange. Also set EOSP to indicate this packet
1344 * ends the poll/service period.
1346 info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER |
1347 IEEE80211_TX_STATUS_EOSP |
1348 IEEE80211_TX_CTL_REQ_TX_STATUS;
1350 info->control.flags |= IEEE80211_TX_CTRL_PS_RESPONSE;
1353 drv_allow_buffered_frames(local, sta, BIT(tid), 1,
1356 skb->dev = sdata->dev;
1359 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1360 if (WARN_ON(!chanctx_conf)) {
1366 info->band = chanctx_conf->def.chan->band;
1367 ieee80211_xmit(sdata, sta, skb);
1371 static int find_highest_prio_tid(unsigned long tids)
1373 /* lower 3 TIDs aren't ordered perfectly */
1375 return fls(tids) - 1;
1376 /* TID 0 is BE just like TID 3 */
1379 return fls(tids) - 1;
1382 /* Indicates if the MORE_DATA bit should be set in the last
1383 * frame obtained by ieee80211_sta_ps_get_frames.
1384 * Note that driver_release_tids is relevant only if
1385 * reason = IEEE80211_FRAME_RELEASE_PSPOLL
1388 ieee80211_sta_ps_more_data(struct sta_info *sta, u8 ignored_acs,
1389 enum ieee80211_frame_release_type reason,
1390 unsigned long driver_release_tids)
1394 /* If the driver has data on more than one TID then
1395 * certainly there's more data if we release just a
1396 * single frame now (from a single TID). This will
1397 * only happen for PS-Poll.
1399 if (reason == IEEE80211_FRAME_RELEASE_PSPOLL &&
1400 hweight16(driver_release_tids) > 1)
1403 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
1404 if (ignored_acs & BIT(ac))
1407 if (!skb_queue_empty(&sta->tx_filtered[ac]) ||
1408 !skb_queue_empty(&sta->ps_tx_buf[ac]))
1416 ieee80211_sta_ps_get_frames(struct sta_info *sta, int n_frames, u8 ignored_acs,
1417 enum ieee80211_frame_release_type reason,
1418 struct sk_buff_head *frames,
1419 unsigned long *driver_release_tids)
1421 struct ieee80211_sub_if_data *sdata = sta->sdata;
1422 struct ieee80211_local *local = sdata->local;
1425 /* Get response frame(s) and more data bit for the last one. */
1426 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
1429 if (ignored_acs & BIT(ac))
1432 tids = ieee80211_tids_for_ac(ac);
1434 /* if we already have frames from software, then we can't also
1435 * release from hardware queues
1437 if (skb_queue_empty(frames)) {
1438 *driver_release_tids |=
1439 sta->driver_buffered_tids & tids;
1440 *driver_release_tids |= sta->txq_buffered_tids & tids;
1443 if (!*driver_release_tids) {
1444 struct sk_buff *skb;
1446 while (n_frames > 0) {
1447 skb = skb_dequeue(&sta->tx_filtered[ac]);
1450 &sta->ps_tx_buf[ac]);
1452 local->total_ps_buffered--;
1457 __skb_queue_tail(frames, skb);
1461 /* If we have more frames buffered on this AC, then abort the
1462 * loop since we can't send more data from other ACs before
1463 * the buffered frames from this.
1465 if (!skb_queue_empty(&sta->tx_filtered[ac]) ||
1466 !skb_queue_empty(&sta->ps_tx_buf[ac]))
1472 ieee80211_sta_ps_deliver_response(struct sta_info *sta,
1473 int n_frames, u8 ignored_acs,
1474 enum ieee80211_frame_release_type reason)
1476 struct ieee80211_sub_if_data *sdata = sta->sdata;
1477 struct ieee80211_local *local = sdata->local;
1478 unsigned long driver_release_tids = 0;
1479 struct sk_buff_head frames;
1482 /* Service or PS-Poll period starts */
1483 set_sta_flag(sta, WLAN_STA_SP);
1485 __skb_queue_head_init(&frames);
1487 ieee80211_sta_ps_get_frames(sta, n_frames, ignored_acs, reason,
1488 &frames, &driver_release_tids);
1490 more_data = ieee80211_sta_ps_more_data(sta, ignored_acs, reason, driver_release_tids);
1492 if (driver_release_tids && reason == IEEE80211_FRAME_RELEASE_PSPOLL)
1493 driver_release_tids =
1494 BIT(find_highest_prio_tid(driver_release_tids));
1496 if (skb_queue_empty(&frames) && !driver_release_tids) {
1500 * For PS-Poll, this can only happen due to a race condition
1501 * when we set the TIM bit and the station notices it, but
1502 * before it can poll for the frame we expire it.
1504 * For uAPSD, this is said in the standard (11.2.1.5 h):
1505 * At each unscheduled SP for a non-AP STA, the AP shall
1506 * attempt to transmit at least one MSDU or MMPDU, but no
1507 * more than the value specified in the Max SP Length field
1508 * in the QoS Capability element from delivery-enabled ACs,
1509 * that are destined for the non-AP STA.
1511 * Since we have no other MSDU/MMPDU, transmit a QoS null frame.
1514 /* This will evaluate to 1, 3, 5 or 7. */
1515 tid = 7 - ((ffs(~ignored_acs) - 1) << 1);
1517 ieee80211_send_null_response(sta, tid, reason, true, false);
1518 } else if (!driver_release_tids) {
1519 struct sk_buff_head pending;
1520 struct sk_buff *skb;
1523 bool need_null = false;
1525 skb_queue_head_init(&pending);
1527 while ((skb = __skb_dequeue(&frames))) {
1528 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1529 struct ieee80211_hdr *hdr = (void *) skb->data;
1535 * Tell TX path to send this frame even though the
1536 * STA may still remain is PS mode after this frame
1539 info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER;
1540 info->control.flags |= IEEE80211_TX_CTRL_PS_RESPONSE;
1543 * Use MoreData flag to indicate whether there are
1544 * more buffered frames for this STA
1546 if (more_data || !skb_queue_empty(&frames))
1547 hdr->frame_control |=
1548 cpu_to_le16(IEEE80211_FCTL_MOREDATA);
1550 hdr->frame_control &=
1551 cpu_to_le16(~IEEE80211_FCTL_MOREDATA);
1553 if (ieee80211_is_data_qos(hdr->frame_control) ||
1554 ieee80211_is_qos_nullfunc(hdr->frame_control))
1555 qoshdr = ieee80211_get_qos_ctl(hdr);
1557 tids |= BIT(skb->priority);
1559 __skb_queue_tail(&pending, skb);
1561 /* end service period after last frame or add one */
1562 if (!skb_queue_empty(&frames))
1565 if (reason != IEEE80211_FRAME_RELEASE_UAPSD) {
1566 /* for PS-Poll, there's only one frame */
1567 info->flags |= IEEE80211_TX_STATUS_EOSP |
1568 IEEE80211_TX_CTL_REQ_TX_STATUS;
1572 /* For uAPSD, things are a bit more complicated. If the
1573 * last frame has a QoS header (i.e. is a QoS-data or
1574 * QoS-nulldata frame) then just set the EOSP bit there
1576 * If the frame doesn't have a QoS header (which means
1577 * it should be a bufferable MMPDU) then we can't set
1578 * the EOSP bit in the QoS header; add a QoS-nulldata
1579 * frame to the list to send it after the MMPDU.
1581 * Note that this code is only in the mac80211-release
1582 * code path, we assume that the driver will not buffer
1583 * anything but QoS-data frames, or if it does, will
1584 * create the QoS-nulldata frame by itself if needed.
1586 * Cf. 802.11-2012 10.2.1.10 (c).
1589 *qoshdr |= IEEE80211_QOS_CTL_EOSP;
1591 info->flags |= IEEE80211_TX_STATUS_EOSP |
1592 IEEE80211_TX_CTL_REQ_TX_STATUS;
1594 /* The standard isn't completely clear on this
1595 * as it says the more-data bit should be set
1596 * if there are more BUs. The QoS-Null frame
1597 * we're about to send isn't buffered yet, we
1598 * only create it below, but let's pretend it
1599 * was buffered just in case some clients only
1600 * expect more-data=0 when eosp=1.
1602 hdr->frame_control |=
1603 cpu_to_le16(IEEE80211_FCTL_MOREDATA);
1610 drv_allow_buffered_frames(local, sta, tids, num,
1613 ieee80211_add_pending_skbs(local, &pending);
1616 ieee80211_send_null_response(
1617 sta, find_highest_prio_tid(tids),
1618 reason, false, false);
1620 sta_info_recalc_tim(sta);
1622 unsigned long tids = sta->txq_buffered_tids & driver_release_tids;
1626 * We need to release a frame that is buffered somewhere in the
1627 * driver ... it'll have to handle that.
1628 * Note that the driver also has to check the number of frames
1629 * on the TIDs we're releasing from - if there are more than
1630 * n_frames it has to set the more-data bit (if we didn't ask
1631 * it to set it anyway due to other buffered frames); if there
1632 * are fewer than n_frames it has to make sure to adjust that
1633 * to allow the service period to end properly.
1635 drv_release_buffered_frames(local, sta, driver_release_tids,
1636 n_frames, reason, more_data);
1639 * Note that we don't recalculate the TIM bit here as it would
1640 * most likely have no effect at all unless the driver told us
1641 * that the TID(s) became empty before returning here from the
1643 * Either way, however, when the driver tells us that the TID(s)
1644 * became empty or we find that a txq became empty, we'll do the
1645 * TIM recalculation.
1648 if (!sta->sta.txq[0])
1651 for (tid = 0; tid < ARRAY_SIZE(sta->sta.txq); tid++) {
1652 struct txq_info *txqi = to_txq_info(sta->sta.txq[tid]);
1654 if (!(tids & BIT(tid)) || txqi->tin.backlog_packets)
1657 sta_info_recalc_tim(sta);
1663 void ieee80211_sta_ps_deliver_poll_response(struct sta_info *sta)
1665 u8 ignore_for_response = sta->sta.uapsd_queues;
1668 * If all ACs are delivery-enabled then we should reply
1669 * from any of them, if only some are enabled we reply
1670 * only from the non-enabled ones.
1672 if (ignore_for_response == BIT(IEEE80211_NUM_ACS) - 1)
1673 ignore_for_response = 0;
1675 ieee80211_sta_ps_deliver_response(sta, 1, ignore_for_response,
1676 IEEE80211_FRAME_RELEASE_PSPOLL);
1679 void ieee80211_sta_ps_deliver_uapsd(struct sta_info *sta)
1681 int n_frames = sta->sta.max_sp;
1682 u8 delivery_enabled = sta->sta.uapsd_queues;
1685 * If we ever grow support for TSPEC this might happen if
1686 * the TSPEC update from hostapd comes in between a trigger
1687 * frame setting WLAN_STA_UAPSD in the RX path and this
1688 * actually getting called.
1690 if (!delivery_enabled)
1693 switch (sta->sta.max_sp) {
1704 /* XXX: what is a good value? */
1709 ieee80211_sta_ps_deliver_response(sta, n_frames, ~delivery_enabled,
1710 IEEE80211_FRAME_RELEASE_UAPSD);
1713 void ieee80211_sta_block_awake(struct ieee80211_hw *hw,
1714 struct ieee80211_sta *pubsta, bool block)
1716 struct sta_info *sta = container_of(pubsta, struct sta_info, sta);
1718 trace_api_sta_block_awake(sta->local, pubsta, block);
1721 set_sta_flag(sta, WLAN_STA_PS_DRIVER);
1722 ieee80211_clear_fast_xmit(sta);
1726 if (!test_sta_flag(sta, WLAN_STA_PS_DRIVER))
1729 if (!test_sta_flag(sta, WLAN_STA_PS_STA)) {
1730 set_sta_flag(sta, WLAN_STA_PS_DELIVER);
1731 clear_sta_flag(sta, WLAN_STA_PS_DRIVER);
1732 ieee80211_queue_work(hw, &sta->drv_deliver_wk);
1733 } else if (test_sta_flag(sta, WLAN_STA_PSPOLL) ||
1734 test_sta_flag(sta, WLAN_STA_UAPSD)) {
1735 /* must be asleep in this case */
1736 clear_sta_flag(sta, WLAN_STA_PS_DRIVER);
1737 ieee80211_queue_work(hw, &sta->drv_deliver_wk);
1739 clear_sta_flag(sta, WLAN_STA_PS_DRIVER);
1740 ieee80211_check_fast_xmit(sta);
1743 EXPORT_SYMBOL(ieee80211_sta_block_awake);
1745 void ieee80211_sta_eosp(struct ieee80211_sta *pubsta)
1747 struct sta_info *sta = container_of(pubsta, struct sta_info, sta);
1748 struct ieee80211_local *local = sta->local;
1750 trace_api_eosp(local, pubsta);
1752 clear_sta_flag(sta, WLAN_STA_SP);
1754 EXPORT_SYMBOL(ieee80211_sta_eosp);
1756 void ieee80211_send_eosp_nullfunc(struct ieee80211_sta *pubsta, int tid)
1758 struct sta_info *sta = container_of(pubsta, struct sta_info, sta);
1759 enum ieee80211_frame_release_type reason;
1762 trace_api_send_eosp_nullfunc(sta->local, pubsta, tid);
1764 reason = IEEE80211_FRAME_RELEASE_UAPSD;
1765 more_data = ieee80211_sta_ps_more_data(sta, ~sta->sta.uapsd_queues,
1768 ieee80211_send_null_response(sta, tid, reason, false, more_data);
1770 EXPORT_SYMBOL(ieee80211_send_eosp_nullfunc);
1772 void ieee80211_sta_set_buffered(struct ieee80211_sta *pubsta,
1773 u8 tid, bool buffered)
1775 struct sta_info *sta = container_of(pubsta, struct sta_info, sta);
1777 if (WARN_ON(tid >= IEEE80211_NUM_TIDS))
1780 trace_api_sta_set_buffered(sta->local, pubsta, tid, buffered);
1783 set_bit(tid, &sta->driver_buffered_tids);
1785 clear_bit(tid, &sta->driver_buffered_tids);
1787 sta_info_recalc_tim(sta);
1789 EXPORT_SYMBOL(ieee80211_sta_set_buffered);
1792 ieee80211_recalc_p2p_go_ps_allowed(struct ieee80211_sub_if_data *sdata)
1794 struct ieee80211_local *local = sdata->local;
1795 bool allow_p2p_go_ps = sdata->vif.p2p;
1796 struct sta_info *sta;
1799 list_for_each_entry_rcu(sta, &local->sta_list, list) {
1800 if (sdata != sta->sdata ||
1801 !test_sta_flag(sta, WLAN_STA_ASSOC))
1803 if (!sta->sta.support_p2p_ps) {
1804 allow_p2p_go_ps = false;
1810 if (allow_p2p_go_ps != sdata->vif.bss_conf.allow_p2p_go_ps) {
1811 sdata->vif.bss_conf.allow_p2p_go_ps = allow_p2p_go_ps;
1812 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_P2P_PS);
1816 int sta_info_move_state(struct sta_info *sta,
1817 enum ieee80211_sta_state new_state)
1821 if (sta->sta_state == new_state)
1824 /* check allowed transitions first */
1826 switch (new_state) {
1827 case IEEE80211_STA_NONE:
1828 if (sta->sta_state != IEEE80211_STA_AUTH)
1831 case IEEE80211_STA_AUTH:
1832 if (sta->sta_state != IEEE80211_STA_NONE &&
1833 sta->sta_state != IEEE80211_STA_ASSOC)
1836 case IEEE80211_STA_ASSOC:
1837 if (sta->sta_state != IEEE80211_STA_AUTH &&
1838 sta->sta_state != IEEE80211_STA_AUTHORIZED)
1841 case IEEE80211_STA_AUTHORIZED:
1842 if (sta->sta_state != IEEE80211_STA_ASSOC)
1846 WARN(1, "invalid state %d", new_state);
1850 sta_dbg(sta->sdata, "moving STA %pM to state %d\n",
1851 sta->sta.addr, new_state);
1854 * notify the driver before the actual changes so it can
1855 * fail the transition
1857 if (test_sta_flag(sta, WLAN_STA_INSERTED)) {
1858 int err = drv_sta_state(sta->local, sta->sdata, sta,
1859 sta->sta_state, new_state);
1864 /* reflect the change in all state variables */
1866 switch (new_state) {
1867 case IEEE80211_STA_NONE:
1868 if (sta->sta_state == IEEE80211_STA_AUTH)
1869 clear_bit(WLAN_STA_AUTH, &sta->_flags);
1871 case IEEE80211_STA_AUTH:
1872 if (sta->sta_state == IEEE80211_STA_NONE) {
1873 set_bit(WLAN_STA_AUTH, &sta->_flags);
1874 } else if (sta->sta_state == IEEE80211_STA_ASSOC) {
1875 clear_bit(WLAN_STA_ASSOC, &sta->_flags);
1876 ieee80211_recalc_min_chandef(sta->sdata);
1877 if (!sta->sta.support_p2p_ps)
1878 ieee80211_recalc_p2p_go_ps_allowed(sta->sdata);
1881 case IEEE80211_STA_ASSOC:
1882 if (sta->sta_state == IEEE80211_STA_AUTH) {
1883 set_bit(WLAN_STA_ASSOC, &sta->_flags);
1884 ieee80211_recalc_min_chandef(sta->sdata);
1885 if (!sta->sta.support_p2p_ps)
1886 ieee80211_recalc_p2p_go_ps_allowed(sta->sdata);
1887 } else if (sta->sta_state == IEEE80211_STA_AUTHORIZED) {
1888 if (sta->sdata->vif.type == NL80211_IFTYPE_AP ||
1889 (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1890 !sta->sdata->u.vlan.sta))
1891 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1892 clear_bit(WLAN_STA_AUTHORIZED, &sta->_flags);
1893 ieee80211_clear_fast_xmit(sta);
1894 ieee80211_clear_fast_rx(sta);
1897 case IEEE80211_STA_AUTHORIZED:
1898 if (sta->sta_state == IEEE80211_STA_ASSOC) {
1899 if (sta->sdata->vif.type == NL80211_IFTYPE_AP ||
1900 (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1901 !sta->sdata->u.vlan.sta))
1902 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1903 set_bit(WLAN_STA_AUTHORIZED, &sta->_flags);
1904 ieee80211_check_fast_xmit(sta);
1905 ieee80211_check_fast_rx(sta);
1912 sta->sta_state = new_state;
1917 u8 sta_info_tx_streams(struct sta_info *sta)
1919 struct ieee80211_sta_ht_cap *ht_cap = &sta->sta.ht_cap;
1922 if (!sta->sta.ht_cap.ht_supported)
1925 if (sta->sta.vht_cap.vht_supported) {
1928 le16_to_cpu(sta->sta.vht_cap.vht_mcs.tx_mcs_map);
1930 for (i = 7; i >= 0; i--)
1931 if ((tx_mcs_map & (0x3 << (i * 2))) !=
1932 IEEE80211_VHT_MCS_NOT_SUPPORTED)
1936 if (ht_cap->mcs.rx_mask[3])
1938 else if (ht_cap->mcs.rx_mask[2])
1940 else if (ht_cap->mcs.rx_mask[1])
1945 if (!(ht_cap->mcs.tx_params & IEEE80211_HT_MCS_TX_RX_DIFF))
1948 return ((ht_cap->mcs.tx_params & IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK)
1949 >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT) + 1;
1952 static struct ieee80211_sta_rx_stats *
1953 sta_get_last_rx_stats(struct sta_info *sta)
1955 struct ieee80211_sta_rx_stats *stats = &sta->rx_stats;
1956 struct ieee80211_local *local = sta->local;
1959 if (!ieee80211_hw_check(&local->hw, USES_RSS))
1962 for_each_possible_cpu(cpu) {
1963 struct ieee80211_sta_rx_stats *cpustats;
1965 cpustats = per_cpu_ptr(sta->pcpu_rx_stats, cpu);
1967 if (time_after(cpustats->last_rx, stats->last_rx))
1974 static void sta_stats_decode_rate(struct ieee80211_local *local, u16 rate,
1975 struct rate_info *rinfo)
1977 rinfo->bw = (rate & STA_STATS_RATE_BW_MASK) >>
1978 STA_STATS_RATE_BW_SHIFT;
1980 if (rate & STA_STATS_RATE_VHT) {
1981 rinfo->flags = RATE_INFO_FLAGS_VHT_MCS;
1982 rinfo->mcs = rate & 0xf;
1983 rinfo->nss = (rate & 0xf0) >> 4;
1984 } else if (rate & STA_STATS_RATE_HT) {
1985 rinfo->flags = RATE_INFO_FLAGS_MCS;
1986 rinfo->mcs = rate & 0xff;
1987 } else if (rate & STA_STATS_RATE_LEGACY) {
1988 struct ieee80211_supported_band *sband;
1992 sband = local->hw.wiphy->bands[(rate >> 4) & 0xf];
1993 brate = sband->bitrates[rate & 0xf].bitrate;
1994 if (rinfo->bw == RATE_INFO_BW_5)
1996 else if (rinfo->bw == RATE_INFO_BW_10)
2000 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
2003 if (rate & STA_STATS_RATE_SGI)
2004 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
2007 static void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo)
2009 u16 rate = ACCESS_ONCE(sta_get_last_rx_stats(sta)->last_rate);
2011 if (rate == STA_STATS_RATE_INVALID)
2014 sta_stats_decode_rate(sta->local, rate, rinfo);
2017 static void sta_set_tidstats(struct sta_info *sta,
2018 struct cfg80211_tid_stats *tidstats,
2021 struct ieee80211_local *local = sta->local;
2023 if (!(tidstats->filled & BIT(NL80211_TID_STATS_RX_MSDU))) {
2027 start = u64_stats_fetch_begin(&sta->rx_stats.syncp);
2028 tidstats->rx_msdu = sta->rx_stats.msdu[tid];
2029 } while (u64_stats_fetch_retry(&sta->rx_stats.syncp, start));
2031 tidstats->filled |= BIT(NL80211_TID_STATS_RX_MSDU);
2034 if (!(tidstats->filled & BIT(NL80211_TID_STATS_TX_MSDU))) {
2035 tidstats->filled |= BIT(NL80211_TID_STATS_TX_MSDU);
2036 tidstats->tx_msdu = sta->tx_stats.msdu[tid];
2039 if (!(tidstats->filled & BIT(NL80211_TID_STATS_TX_MSDU_RETRIES)) &&
2040 ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) {
2041 tidstats->filled |= BIT(NL80211_TID_STATS_TX_MSDU_RETRIES);
2042 tidstats->tx_msdu_retries = sta->status_stats.msdu_retries[tid];
2045 if (!(tidstats->filled & BIT(NL80211_TID_STATS_TX_MSDU_FAILED)) &&
2046 ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) {
2047 tidstats->filled |= BIT(NL80211_TID_STATS_TX_MSDU_FAILED);
2048 tidstats->tx_msdu_failed = sta->status_stats.msdu_failed[tid];
2052 static inline u64 sta_get_stats_bytes(struct ieee80211_sta_rx_stats *rxstats)
2058 start = u64_stats_fetch_begin(&rxstats->syncp);
2059 value = rxstats->bytes;
2060 } while (u64_stats_fetch_retry(&rxstats->syncp, start));
2065 void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
2067 struct ieee80211_sub_if_data *sdata = sta->sdata;
2068 struct ieee80211_local *local = sdata->local;
2069 struct rate_control_ref *ref = NULL;
2072 struct ieee80211_sta_rx_stats *last_rxstats;
2074 last_rxstats = sta_get_last_rx_stats(sta);
2076 if (test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
2077 ref = local->rate_ctrl;
2079 sinfo->generation = sdata->local->sta_generation;
2081 /* do before driver, so beacon filtering drivers have a
2082 * chance to e.g. just add the number of filtered beacons
2083 * (or just modify the value entirely, of course)
2085 if (sdata->vif.type == NL80211_IFTYPE_STATION)
2086 sinfo->rx_beacon = sdata->u.mgd.count_beacon_signal;
2088 drv_sta_statistics(local, sdata, &sta->sta, sinfo);
2090 sinfo->filled |= BIT(NL80211_STA_INFO_INACTIVE_TIME) |
2091 BIT(NL80211_STA_INFO_STA_FLAGS) |
2092 BIT(NL80211_STA_INFO_BSS_PARAM) |
2093 BIT(NL80211_STA_INFO_CONNECTED_TIME) |
2094 BIT(NL80211_STA_INFO_RX_DROP_MISC);
2096 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
2097 sinfo->beacon_loss_count = sdata->u.mgd.beacon_loss_count;
2098 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_LOSS);
2101 sinfo->connected_time = ktime_get_seconds() - sta->last_connected;
2102 sinfo->inactive_time =
2103 jiffies_to_msecs(jiffies - ieee80211_sta_last_active(sta));
2105 if (!(sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES64) |
2106 BIT(NL80211_STA_INFO_TX_BYTES)))) {
2107 sinfo->tx_bytes = 0;
2108 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
2109 sinfo->tx_bytes += sta->tx_stats.bytes[ac];
2110 sinfo->filled |= BIT(NL80211_STA_INFO_TX_BYTES64);
2113 if (!(sinfo->filled & BIT(NL80211_STA_INFO_TX_PACKETS))) {
2114 sinfo->tx_packets = 0;
2115 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
2116 sinfo->tx_packets += sta->tx_stats.packets[ac];
2117 sinfo->filled |= BIT(NL80211_STA_INFO_TX_PACKETS);
2120 if (!(sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES64) |
2121 BIT(NL80211_STA_INFO_RX_BYTES)))) {
2122 sinfo->rx_bytes += sta_get_stats_bytes(&sta->rx_stats);
2124 if (sta->pcpu_rx_stats) {
2125 for_each_possible_cpu(cpu) {
2126 struct ieee80211_sta_rx_stats *cpurxs;
2128 cpurxs = per_cpu_ptr(sta->pcpu_rx_stats, cpu);
2129 sinfo->rx_bytes += sta_get_stats_bytes(cpurxs);
2133 sinfo->filled |= BIT(NL80211_STA_INFO_RX_BYTES64);
2136 if (!(sinfo->filled & BIT(NL80211_STA_INFO_RX_PACKETS))) {
2137 sinfo->rx_packets = sta->rx_stats.packets;
2138 if (sta->pcpu_rx_stats) {
2139 for_each_possible_cpu(cpu) {
2140 struct ieee80211_sta_rx_stats *cpurxs;
2142 cpurxs = per_cpu_ptr(sta->pcpu_rx_stats, cpu);
2143 sinfo->rx_packets += cpurxs->packets;
2146 sinfo->filled |= BIT(NL80211_STA_INFO_RX_PACKETS);
2149 if (!(sinfo->filled & BIT(NL80211_STA_INFO_TX_RETRIES))) {
2150 sinfo->tx_retries = sta->status_stats.retry_count;
2151 sinfo->filled |= BIT(NL80211_STA_INFO_TX_RETRIES);
2154 if (!(sinfo->filled & BIT(NL80211_STA_INFO_TX_FAILED))) {
2155 sinfo->tx_failed = sta->status_stats.retry_failed;
2156 sinfo->filled |= BIT(NL80211_STA_INFO_TX_FAILED);
2159 sinfo->rx_dropped_misc = sta->rx_stats.dropped;
2160 if (sta->pcpu_rx_stats) {
2161 for_each_possible_cpu(cpu) {
2162 struct ieee80211_sta_rx_stats *cpurxs;
2164 cpurxs = per_cpu_ptr(sta->pcpu_rx_stats, cpu);
2165 sinfo->rx_packets += cpurxs->dropped;
2169 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
2170 !(sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)) {
2171 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX) |
2172 BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
2173 sinfo->rx_beacon_signal_avg = ieee80211_ave_rssi(&sdata->vif);
2176 if (ieee80211_hw_check(&sta->local->hw, SIGNAL_DBM) ||
2177 ieee80211_hw_check(&sta->local->hw, SIGNAL_UNSPEC)) {
2178 if (!(sinfo->filled & BIT(NL80211_STA_INFO_SIGNAL))) {
2179 sinfo->signal = (s8)last_rxstats->last_signal;
2180 sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL);
2183 if (!sta->pcpu_rx_stats &&
2184 !(sinfo->filled & BIT(NL80211_STA_INFO_SIGNAL_AVG))) {
2186 -ewma_signal_read(&sta->rx_stats_avg.signal);
2187 sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL_AVG);
2191 /* for the average - if pcpu_rx_stats isn't set - rxstats must point to
2192 * the sta->rx_stats struct, so the check here is fine with and without
2195 if (last_rxstats->chains &&
2196 !(sinfo->filled & (BIT(NL80211_STA_INFO_CHAIN_SIGNAL) |
2197 BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)))) {
2198 sinfo->filled |= BIT(NL80211_STA_INFO_CHAIN_SIGNAL);
2199 if (!sta->pcpu_rx_stats)
2200 sinfo->filled |= BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG);
2202 sinfo->chains = last_rxstats->chains;
2204 for (i = 0; i < ARRAY_SIZE(sinfo->chain_signal); i++) {
2205 sinfo->chain_signal[i] =
2206 last_rxstats->chain_signal_last[i];
2207 sinfo->chain_signal_avg[i] =
2208 -ewma_signal_read(&sta->rx_stats_avg.chain_signal[i]);
2212 if (!(sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE))) {
2213 sta_set_rate_info_tx(sta, &sta->tx_stats.last_rate,
2215 sinfo->filled |= BIT(NL80211_STA_INFO_TX_BITRATE);
2218 if (!(sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE))) {
2219 sta_set_rate_info_rx(sta, &sinfo->rxrate);
2220 sinfo->filled |= BIT(NL80211_STA_INFO_RX_BITRATE);
2223 sinfo->filled |= BIT(NL80211_STA_INFO_TID_STATS);
2224 for (i = 0; i < IEEE80211_NUM_TIDS + 1; i++) {
2225 struct cfg80211_tid_stats *tidstats = &sinfo->pertid[i];
2227 sta_set_tidstats(sta, tidstats, i);
2230 if (ieee80211_vif_is_mesh(&sdata->vif)) {
2231 #ifdef CONFIG_MAC80211_MESH
2232 sinfo->filled |= BIT(NL80211_STA_INFO_LLID) |
2233 BIT(NL80211_STA_INFO_PLID) |
2234 BIT(NL80211_STA_INFO_PLINK_STATE) |
2235 BIT(NL80211_STA_INFO_LOCAL_PM) |
2236 BIT(NL80211_STA_INFO_PEER_PM) |
2237 BIT(NL80211_STA_INFO_NONPEER_PM);
2239 sinfo->llid = sta->mesh->llid;
2240 sinfo->plid = sta->mesh->plid;
2241 sinfo->plink_state = sta->mesh->plink_state;
2242 if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) {
2243 sinfo->filled |= BIT(NL80211_STA_INFO_T_OFFSET);
2244 sinfo->t_offset = sta->mesh->t_offset;
2246 sinfo->local_pm = sta->mesh->local_pm;
2247 sinfo->peer_pm = sta->mesh->peer_pm;
2248 sinfo->nonpeer_pm = sta->mesh->nonpeer_pm;
2252 sinfo->bss_param.flags = 0;
2253 if (sdata->vif.bss_conf.use_cts_prot)
2254 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
2255 if (sdata->vif.bss_conf.use_short_preamble)
2256 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
2257 if (sdata->vif.bss_conf.use_short_slot)
2258 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
2259 sinfo->bss_param.dtim_period = sdata->vif.bss_conf.dtim_period;
2260 sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
2262 sinfo->sta_flags.set = 0;
2263 sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
2264 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
2265 BIT(NL80211_STA_FLAG_WME) |
2266 BIT(NL80211_STA_FLAG_MFP) |
2267 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
2268 BIT(NL80211_STA_FLAG_ASSOCIATED) |
2269 BIT(NL80211_STA_FLAG_TDLS_PEER);
2270 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2271 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED);
2272 if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE))
2273 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
2275 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME);
2276 if (test_sta_flag(sta, WLAN_STA_MFP))
2277 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP);
2278 if (test_sta_flag(sta, WLAN_STA_AUTH))
2279 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
2280 if (test_sta_flag(sta, WLAN_STA_ASSOC))
2281 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
2282 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
2283 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
2285 thr = sta_get_expected_throughput(sta);
2288 sinfo->filled |= BIT(NL80211_STA_INFO_EXPECTED_THROUGHPUT);
2289 sinfo->expected_throughput = thr;
2293 u32 sta_get_expected_throughput(struct sta_info *sta)
2295 struct ieee80211_sub_if_data *sdata = sta->sdata;
2296 struct ieee80211_local *local = sdata->local;
2297 struct rate_control_ref *ref = NULL;
2300 if (test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
2301 ref = local->rate_ctrl;
2303 /* check if the driver has a SW RC implementation */
2304 if (ref && ref->ops->get_expected_throughput)
2305 thr = ref->ops->get_expected_throughput(sta->rate_ctrl_priv);
2307 thr = drv_get_expected_throughput(local, sta);
2312 unsigned long ieee80211_sta_last_active(struct sta_info *sta)
2314 struct ieee80211_sta_rx_stats *stats = sta_get_last_rx_stats(sta);
2316 if (time_after(stats->last_rx, sta->status_stats.last_ack))
2317 return stats->last_rx;
2318 return sta->status_stats.last_ack;