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 .automatic_shrinking = true,
71 .head_offset = offsetof(struct sta_info, hash_node),
72 .key_offset = offsetof(struct sta_info, addr),
74 .hashfn = sta_addr_hash,
75 .max_size = CONFIG_MAC80211_STA_HASH_MAX_SIZE,
78 /* Caller must hold local->sta_mtx */
79 static int sta_info_hash_del(struct ieee80211_local *local,
82 return rhashtable_remove_fast(&local->sta_hash, &sta->hash_node,
86 static void __cleanup_single_sta(struct sta_info *sta)
89 struct tid_ampdu_tx *tid_tx;
90 struct ieee80211_sub_if_data *sdata = sta->sdata;
91 struct ieee80211_local *local = sdata->local;
94 if (test_sta_flag(sta, WLAN_STA_PS_STA) ||
95 test_sta_flag(sta, WLAN_STA_PS_DRIVER) ||
96 test_sta_flag(sta, WLAN_STA_PS_DELIVER)) {
97 if (sta->sdata->vif.type == NL80211_IFTYPE_AP ||
98 sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
100 else if (ieee80211_vif_is_mesh(&sdata->vif))
101 ps = &sdata->u.mesh.ps;
105 clear_sta_flag(sta, WLAN_STA_PS_STA);
106 clear_sta_flag(sta, WLAN_STA_PS_DRIVER);
107 clear_sta_flag(sta, WLAN_STA_PS_DELIVER);
109 atomic_dec(&ps->num_sta_ps);
112 if (sta->sta.txq[0]) {
113 for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) {
114 struct txq_info *txqi = to_txq_info(sta->sta.txq[i]);
115 int n = skb_queue_len(&txqi->queue);
117 ieee80211_purge_tx_queue(&local->hw, &txqi->queue);
118 atomic_sub(n, &sdata->txqs_len[txqi->txq.ac]);
123 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
124 local->total_ps_buffered -= skb_queue_len(&sta->ps_tx_buf[ac]);
125 ieee80211_purge_tx_queue(&local->hw, &sta->ps_tx_buf[ac]);
126 ieee80211_purge_tx_queue(&local->hw, &sta->tx_filtered[ac]);
129 if (ieee80211_vif_is_mesh(&sdata->vif))
130 mesh_sta_cleanup(sta);
132 cancel_work_sync(&sta->drv_deliver_wk);
135 * Destroy aggregation state here. It would be nice to wait for the
136 * driver to finish aggregation stop and then clean up, but for now
137 * drivers have to handle aggregation stop being requested, followed
138 * directly by station destruction.
140 for (i = 0; i < IEEE80211_NUM_TIDS; i++) {
141 kfree(sta->ampdu_mlme.tid_start_tx[i]);
142 tid_tx = rcu_dereference_raw(sta->ampdu_mlme.tid_tx[i]);
145 ieee80211_purge_tx_queue(&local->hw, &tid_tx->pending);
150 static void cleanup_single_sta(struct sta_info *sta)
152 struct ieee80211_sub_if_data *sdata = sta->sdata;
153 struct ieee80211_local *local = sdata->local;
155 __cleanup_single_sta(sta);
156 sta_info_free(local, sta);
159 /* protected by RCU */
160 struct sta_info *sta_info_get(struct ieee80211_sub_if_data *sdata,
163 struct ieee80211_local *local = sdata->local;
164 struct sta_info *sta;
165 struct rhash_head *tmp;
166 const struct bucket_table *tbl;
169 tbl = rht_dereference_rcu(local->sta_hash.tbl, &local->sta_hash);
171 for_each_sta_info(local, tbl, addr, sta, tmp) {
172 if (sta->sdata == sdata) {
174 /* this is safe as the caller must already hold
175 * another rcu read section or the mutex
185 * Get sta info either from the specified interface
186 * or from one of its vlans
188 struct sta_info *sta_info_get_bss(struct ieee80211_sub_if_data *sdata,
191 struct ieee80211_local *local = sdata->local;
192 struct sta_info *sta;
193 struct rhash_head *tmp;
194 const struct bucket_table *tbl;
197 tbl = rht_dereference_rcu(local->sta_hash.tbl, &local->sta_hash);
199 for_each_sta_info(local, tbl, addr, sta, tmp) {
200 if (sta->sdata == sdata ||
201 (sta->sdata->bss && sta->sdata->bss == sdata->bss)) {
203 /* this is safe as the caller must already hold
204 * another rcu read section or the mutex
213 struct sta_info *sta_info_get_by_idx(struct ieee80211_sub_if_data *sdata,
216 struct ieee80211_local *local = sdata->local;
217 struct sta_info *sta;
220 list_for_each_entry_rcu(sta, &local->sta_list, list) {
221 if (sdata != sta->sdata)
234 * sta_info_free - free STA
236 * @local: pointer to the global information
237 * @sta: STA info to free
239 * This function must undo everything done by sta_info_alloc()
240 * that may happen before sta_info_insert(). It may only be
241 * called when sta_info_insert() has not been attempted (and
242 * if that fails, the station is freed anyway.)
244 void sta_info_free(struct ieee80211_local *local, struct sta_info *sta)
247 rate_control_free_sta(sta);
249 sta_dbg(sta->sdata, "Destroyed STA %pM\n", sta->sta.addr);
252 kfree(to_txq_info(sta->sta.txq[0]));
253 kfree(rcu_dereference_raw(sta->sta.rates));
254 #ifdef CONFIG_MAC80211_MESH
257 free_percpu(sta->pcpu_rx_stats);
261 /* Caller must hold local->sta_mtx */
262 static void sta_info_hash_add(struct ieee80211_local *local,
263 struct sta_info *sta)
265 rhashtable_insert_fast(&local->sta_hash, &sta->hash_node,
269 static void sta_deliver_ps_frames(struct work_struct *wk)
271 struct sta_info *sta;
273 sta = container_of(wk, struct sta_info, drv_deliver_wk);
279 if (!test_sta_flag(sta, WLAN_STA_PS_STA))
280 ieee80211_sta_ps_deliver_wakeup(sta);
281 else if (test_and_clear_sta_flag(sta, WLAN_STA_PSPOLL))
282 ieee80211_sta_ps_deliver_poll_response(sta);
283 else if (test_and_clear_sta_flag(sta, WLAN_STA_UAPSD))
284 ieee80211_sta_ps_deliver_uapsd(sta);
288 static int sta_prepare_rate_control(struct ieee80211_local *local,
289 struct sta_info *sta, gfp_t gfp)
291 if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL))
294 sta->rate_ctrl = local->rate_ctrl;
295 sta->rate_ctrl_priv = rate_control_alloc_sta(sta->rate_ctrl,
297 if (!sta->rate_ctrl_priv)
303 struct sta_info *sta_info_alloc(struct ieee80211_sub_if_data *sdata,
304 const u8 *addr, gfp_t gfp)
306 struct ieee80211_local *local = sdata->local;
307 struct ieee80211_hw *hw = &local->hw;
308 struct sta_info *sta;
311 sta = kzalloc(sizeof(*sta) + hw->sta_data_size, gfp);
315 if (ieee80211_hw_check(hw, USES_RSS)) {
317 alloc_percpu(struct ieee80211_sta_rx_stats);
318 if (!sta->pcpu_rx_stats)
322 spin_lock_init(&sta->lock);
323 spin_lock_init(&sta->ps_lock);
324 INIT_WORK(&sta->drv_deliver_wk, sta_deliver_ps_frames);
325 INIT_WORK(&sta->ampdu_mlme.work, ieee80211_ba_session_work);
326 mutex_init(&sta->ampdu_mlme.mtx);
327 #ifdef CONFIG_MAC80211_MESH
328 if (ieee80211_vif_is_mesh(&sdata->vif)) {
329 sta->mesh = kzalloc(sizeof(*sta->mesh), gfp);
332 spin_lock_init(&sta->mesh->plink_lock);
333 if (ieee80211_vif_is_mesh(&sdata->vif) &&
334 !sdata->u.mesh.user_mpm)
335 init_timer(&sta->mesh->plink_timer);
336 sta->mesh->nonpeer_pm = NL80211_MESH_POWER_ACTIVE;
340 memcpy(sta->addr, addr, ETH_ALEN);
341 memcpy(sta->sta.addr, addr, ETH_ALEN);
344 sta->rx_stats.last_rx = jiffies;
346 u64_stats_init(&sta->rx_stats.syncp);
348 sta->sta_state = IEEE80211_STA_NONE;
350 /* Mark TID as unreserved */
351 sta->reserved_tid = IEEE80211_TID_UNRESERVED;
353 sta->last_connected = ktime_get_seconds();
354 ewma_signal_init(&sta->rx_stats_avg.signal);
355 for (i = 0; i < ARRAY_SIZE(sta->rx_stats_avg.chain_signal); i++)
356 ewma_signal_init(&sta->rx_stats_avg.chain_signal[i]);
358 if (local->ops->wake_tx_queue) {
360 int size = sizeof(struct txq_info) +
361 ALIGN(hw->txq_data_size, sizeof(void *));
363 txq_data = kcalloc(ARRAY_SIZE(sta->sta.txq), size, gfp);
367 for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) {
368 struct txq_info *txq = txq_data + i * size;
370 ieee80211_init_tx_queue(sdata, sta, txq, i);
374 if (sta_prepare_rate_control(local, sta, gfp))
377 for (i = 0; i < IEEE80211_NUM_TIDS; i++) {
379 * timer_to_tid must be initialized with identity mapping
380 * to enable session_timer's data differentiation. See
381 * sta_rx_agg_session_timer_expired for usage.
383 sta->timer_to_tid[i] = i;
385 for (i = 0; i < IEEE80211_NUM_ACS; i++) {
386 skb_queue_head_init(&sta->ps_tx_buf[i]);
387 skb_queue_head_init(&sta->tx_filtered[i]);
390 for (i = 0; i < IEEE80211_NUM_TIDS; i++)
391 sta->last_seq_ctrl[i] = cpu_to_le16(USHRT_MAX);
393 sta->sta.smps_mode = IEEE80211_SMPS_OFF;
394 if (sdata->vif.type == NL80211_IFTYPE_AP ||
395 sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
396 struct ieee80211_supported_band *sband =
397 hw->wiphy->bands[ieee80211_get_sdata_band(sdata)];
398 u8 smps = (sband->ht_cap.cap & IEEE80211_HT_CAP_SM_PS) >>
399 IEEE80211_HT_CAP_SM_PS_SHIFT;
401 * Assume that hostapd advertises our caps in the beacon and
402 * this is the known_smps_mode for a station that just assciated
405 case WLAN_HT_SMPS_CONTROL_DISABLED:
406 sta->known_smps_mode = IEEE80211_SMPS_OFF;
408 case WLAN_HT_SMPS_CONTROL_STATIC:
409 sta->known_smps_mode = IEEE80211_SMPS_STATIC;
411 case WLAN_HT_SMPS_CONTROL_DYNAMIC:
412 sta->known_smps_mode = IEEE80211_SMPS_DYNAMIC;
419 sta_dbg(sdata, "Allocated STA %pM\n", sta->sta.addr);
425 kfree(to_txq_info(sta->sta.txq[0]));
427 #ifdef CONFIG_MAC80211_MESH
434 static int sta_info_insert_check(struct sta_info *sta)
436 struct ieee80211_sub_if_data *sdata = sta->sdata;
439 * Can't be a WARN_ON because it can be triggered through a race:
440 * something inserts a STA (on one CPU) without holding the RTNL
441 * and another CPU turns off the net device.
443 if (unlikely(!ieee80211_sdata_running(sdata)))
446 if (WARN_ON(ether_addr_equal(sta->sta.addr, sdata->vif.addr) ||
447 is_multicast_ether_addr(sta->sta.addr)))
450 /* Strictly speaking this isn't necessary as we hold the mutex, but
451 * the rhashtable code can't really deal with that distinction. We
452 * do require the mutex for correctness though.
455 lockdep_assert_held(&sdata->local->sta_mtx);
456 if (ieee80211_hw_check(&sdata->local->hw, NEEDS_UNIQUE_STA_ADDR) &&
457 ieee80211_find_sta_by_ifaddr(&sdata->local->hw, sta->addr, NULL)) {
466 static int sta_info_insert_drv_state(struct ieee80211_local *local,
467 struct ieee80211_sub_if_data *sdata,
468 struct sta_info *sta)
470 enum ieee80211_sta_state state;
473 for (state = IEEE80211_STA_NOTEXIST; state < sta->sta_state; state++) {
474 err = drv_sta_state(local, sdata, sta, state, state + 1);
481 * Drivers using legacy sta_add/sta_remove callbacks only
482 * get uploaded set to true after sta_add is called.
484 if (!local->ops->sta_add)
485 sta->uploaded = true;
489 if (sdata->vif.type == NL80211_IFTYPE_ADHOC) {
491 "failed to move IBSS STA %pM to state %d (%d) - keeping it anyway\n",
492 sta->sta.addr, state + 1, err);
496 /* unwind on error */
497 for (; state > IEEE80211_STA_NOTEXIST; state--)
498 WARN_ON(drv_sta_state(local, sdata, sta, state, state - 1));
504 * should be called with sta_mtx locked
505 * this function replaces the mutex lock
508 static int sta_info_insert_finish(struct sta_info *sta) __acquires(RCU)
510 struct ieee80211_local *local = sta->local;
511 struct ieee80211_sub_if_data *sdata = sta->sdata;
512 struct station_info *sinfo;
515 lockdep_assert_held(&local->sta_mtx);
517 sinfo = kzalloc(sizeof(struct station_info), GFP_KERNEL);
523 /* check if STA exists already */
524 if (sta_info_get_bss(sdata, sta->sta.addr)) {
530 local->sta_generation++;
533 /* simplify things and don't accept BA sessions yet */
534 set_sta_flag(sta, WLAN_STA_BLOCK_BA);
536 /* make the station visible */
537 sta_info_hash_add(local, sta);
539 list_add_tail_rcu(&sta->list, &local->sta_list);
542 err = sta_info_insert_drv_state(local, sdata, sta);
546 set_sta_flag(sta, WLAN_STA_INSERTED);
547 /* accept BA sessions now */
548 clear_sta_flag(sta, WLAN_STA_BLOCK_BA);
550 ieee80211_sta_debugfs_add(sta);
551 rate_control_add_sta_debugfs(sta);
553 sinfo->generation = local->sta_generation;
554 cfg80211_new_sta(sdata->dev, sta->sta.addr, sinfo, GFP_KERNEL);
557 sta_dbg(sdata, "Inserted STA %pM\n", sta->sta.addr);
559 /* move reference to rcu-protected */
561 mutex_unlock(&local->sta_mtx);
563 if (ieee80211_vif_is_mesh(&sdata->vif))
564 mesh_accept_plinks_update(sdata);
568 sta_info_hash_del(local, sta);
569 list_del_rcu(&sta->list);
572 __cleanup_single_sta(sta);
574 mutex_unlock(&local->sta_mtx);
580 int sta_info_insert_rcu(struct sta_info *sta) __acquires(RCU)
582 struct ieee80211_local *local = sta->local;
587 mutex_lock(&local->sta_mtx);
589 err = sta_info_insert_check(sta);
591 mutex_unlock(&local->sta_mtx);
596 err = sta_info_insert_finish(sta);
602 sta_info_free(local, sta);
606 int sta_info_insert(struct sta_info *sta)
608 int err = sta_info_insert_rcu(sta);
615 static inline void __bss_tim_set(u8 *tim, u16 id)
618 * This format has been mandated by the IEEE specifications,
619 * so this line may not be changed to use the __set_bit() format.
621 tim[id / 8] |= (1 << (id % 8));
624 static inline void __bss_tim_clear(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 __clear_bit() format.
630 tim[id / 8] &= ~(1 << (id % 8));
633 static inline bool __bss_tim_get(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 test_bit() format.
639 return tim[id / 8] & (1 << (id % 8));
642 static unsigned long ieee80211_tids_for_ac(int ac)
644 /* If we ever support TIDs > 7, this obviously needs to be adjusted */
646 case IEEE80211_AC_VO:
647 return BIT(6) | BIT(7);
648 case IEEE80211_AC_VI:
649 return BIT(4) | BIT(5);
650 case IEEE80211_AC_BE:
651 return BIT(0) | BIT(3);
652 case IEEE80211_AC_BK:
653 return BIT(1) | BIT(2);
660 static void __sta_info_recalc_tim(struct sta_info *sta, bool ignore_pending)
662 struct ieee80211_local *local = sta->local;
664 bool indicate_tim = false;
665 u8 ignore_for_tim = sta->sta.uapsd_queues;
667 u16 id = sta->sta.aid;
669 if (sta->sdata->vif.type == NL80211_IFTYPE_AP ||
670 sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN) {
671 if (WARN_ON_ONCE(!sta->sdata->bss))
674 ps = &sta->sdata->bss->ps;
675 #ifdef CONFIG_MAC80211_MESH
676 } else if (ieee80211_vif_is_mesh(&sta->sdata->vif)) {
677 ps = &sta->sdata->u.mesh.ps;
683 /* No need to do anything if the driver does all */
684 if (ieee80211_hw_check(&local->hw, AP_LINK_PS))
691 * If all ACs are delivery-enabled then we should build
692 * the TIM bit for all ACs anyway; if only some are then
693 * we ignore those and build the TIM bit using only the
696 if (ignore_for_tim == BIT(IEEE80211_NUM_ACS) - 1)
700 ignore_for_tim = BIT(IEEE80211_NUM_ACS) - 1;
702 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
705 if (ignore_for_tim & BIT(ac))
708 indicate_tim |= !skb_queue_empty(&sta->tx_filtered[ac]) ||
709 !skb_queue_empty(&sta->ps_tx_buf[ac]);
713 tids = ieee80211_tids_for_ac(ac);
716 sta->driver_buffered_tids & tids;
718 sta->txq_buffered_tids & tids;
722 spin_lock_bh(&local->tim_lock);
724 if (indicate_tim == __bss_tim_get(ps->tim, id))
728 __bss_tim_set(ps->tim, id);
730 __bss_tim_clear(ps->tim, id);
732 if (local->ops->set_tim && !WARN_ON(sta->dead)) {
733 local->tim_in_locked_section = true;
734 drv_set_tim(local, &sta->sta, indicate_tim);
735 local->tim_in_locked_section = false;
739 spin_unlock_bh(&local->tim_lock);
742 void sta_info_recalc_tim(struct sta_info *sta)
744 __sta_info_recalc_tim(sta, false);
747 static bool sta_info_buffer_expired(struct sta_info *sta, struct sk_buff *skb)
749 struct ieee80211_tx_info *info;
755 info = IEEE80211_SKB_CB(skb);
757 /* Timeout: (2 * listen_interval * beacon_int * 1024 / 1000000) sec */
758 timeout = (sta->listen_interval *
759 sta->sdata->vif.bss_conf.beacon_int *
761 if (timeout < STA_TX_BUFFER_EXPIRE)
762 timeout = STA_TX_BUFFER_EXPIRE;
763 return time_after(jiffies, info->control.jiffies + timeout);
767 static bool sta_info_cleanup_expire_buffered_ac(struct ieee80211_local *local,
768 struct sta_info *sta, int ac)
774 * First check for frames that should expire on the filtered
775 * queue. Frames here were rejected by the driver and are on
776 * a separate queue to avoid reordering with normal PS-buffered
777 * frames. They also aren't accounted for right now in the
778 * total_ps_buffered counter.
781 spin_lock_irqsave(&sta->tx_filtered[ac].lock, flags);
782 skb = skb_peek(&sta->tx_filtered[ac]);
783 if (sta_info_buffer_expired(sta, skb))
784 skb = __skb_dequeue(&sta->tx_filtered[ac]);
787 spin_unlock_irqrestore(&sta->tx_filtered[ac].lock, flags);
790 * Frames are queued in order, so if this one
791 * hasn't expired yet we can stop testing. If
792 * we actually reached the end of the queue we
793 * also need to stop, of course.
797 ieee80211_free_txskb(&local->hw, skb);
801 * Now also check the normal PS-buffered queue, this will
802 * only find something if the filtered queue was emptied
803 * since the filtered frames are all before the normal PS
807 spin_lock_irqsave(&sta->ps_tx_buf[ac].lock, flags);
808 skb = skb_peek(&sta->ps_tx_buf[ac]);
809 if (sta_info_buffer_expired(sta, skb))
810 skb = __skb_dequeue(&sta->ps_tx_buf[ac]);
813 spin_unlock_irqrestore(&sta->ps_tx_buf[ac].lock, flags);
816 * frames are queued in order, so if this one
817 * hasn't expired yet (or we reached the end of
818 * the queue) we can stop testing
823 local->total_ps_buffered--;
824 ps_dbg(sta->sdata, "Buffered frame expired (STA %pM)\n",
826 ieee80211_free_txskb(&local->hw, skb);
830 * Finally, recalculate the TIM bit for this station -- it might
831 * now be clear because the station was too slow to retrieve its
834 sta_info_recalc_tim(sta);
837 * Return whether there are any frames still buffered, this is
838 * used to check whether the cleanup timer still needs to run,
839 * if there are no frames we don't need to rearm the timer.
841 return !(skb_queue_empty(&sta->ps_tx_buf[ac]) &&
842 skb_queue_empty(&sta->tx_filtered[ac]));
845 static bool sta_info_cleanup_expire_buffered(struct ieee80211_local *local,
846 struct sta_info *sta)
848 bool have_buffered = false;
851 /* This is only necessary for stations on BSS/MBSS interfaces */
852 if (!sta->sdata->bss &&
853 !ieee80211_vif_is_mesh(&sta->sdata->vif))
856 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
858 sta_info_cleanup_expire_buffered_ac(local, sta, ac);
860 return have_buffered;
863 static int __must_check __sta_info_destroy_part1(struct sta_info *sta)
865 struct ieee80211_local *local;
866 struct ieee80211_sub_if_data *sdata;
877 lockdep_assert_held(&local->sta_mtx);
880 * Before removing the station from the driver and
881 * rate control, it might still start new aggregation
882 * sessions -- block that to make sure the tear-down
883 * will be sufficient.
885 set_sta_flag(sta, WLAN_STA_BLOCK_BA);
886 ieee80211_sta_tear_down_BA_sessions(sta, AGG_STOP_DESTROY_STA);
889 * Before removing the station from the driver there might be pending
890 * rx frames on RSS queues sent prior to the disassociation - wait for
891 * all such frames to be processed.
893 drv_sync_rx_queues(local, sta);
895 ret = sta_info_hash_del(local, sta);
900 * for TDLS peers, make sure to return to the base channel before
903 if (test_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL)) {
904 drv_tdls_cancel_channel_switch(local, sdata, &sta->sta);
905 clear_sta_flag(sta, WLAN_STA_TDLS_OFF_CHANNEL);
908 list_del_rcu(&sta->list);
911 drv_sta_pre_rcu_remove(local, sta->sdata, sta);
913 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
914 rcu_access_pointer(sdata->u.vlan.sta) == sta)
915 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
920 static void __sta_info_destroy_part2(struct sta_info *sta)
922 struct ieee80211_local *local = sta->local;
923 struct ieee80211_sub_if_data *sdata = sta->sdata;
924 struct station_info *sinfo;
928 * NOTE: This assumes at least synchronize_net() was done
929 * after _part1 and before _part2!
933 lockdep_assert_held(&local->sta_mtx);
935 /* now keys can no longer be reached */
936 ieee80211_free_sta_keys(local, sta);
938 /* disable TIM bit - last chance to tell driver */
939 __sta_info_recalc_tim(sta, true);
944 local->sta_generation++;
946 while (sta->sta_state > IEEE80211_STA_NONE) {
947 ret = sta_info_move_state(sta, sta->sta_state - 1);
955 ret = drv_sta_state(local, sdata, sta, IEEE80211_STA_NONE,
956 IEEE80211_STA_NOTEXIST);
957 WARN_ON_ONCE(ret != 0);
960 sta_dbg(sdata, "Removed STA %pM\n", sta->sta.addr);
962 sinfo = kzalloc(sizeof(*sinfo), GFP_KERNEL);
964 sta_set_sinfo(sta, sinfo);
965 cfg80211_del_sta_sinfo(sdata->dev, sta->sta.addr, sinfo, GFP_KERNEL);
968 rate_control_remove_sta_debugfs(sta);
969 ieee80211_sta_debugfs_remove(sta);
971 cleanup_single_sta(sta);
974 int __must_check __sta_info_destroy(struct sta_info *sta)
976 int err = __sta_info_destroy_part1(sta);
983 __sta_info_destroy_part2(sta);
988 int sta_info_destroy_addr(struct ieee80211_sub_if_data *sdata, const u8 *addr)
990 struct sta_info *sta;
993 mutex_lock(&sdata->local->sta_mtx);
994 sta = sta_info_get(sdata, addr);
995 ret = __sta_info_destroy(sta);
996 mutex_unlock(&sdata->local->sta_mtx);
1001 int sta_info_destroy_addr_bss(struct ieee80211_sub_if_data *sdata,
1004 struct sta_info *sta;
1007 mutex_lock(&sdata->local->sta_mtx);
1008 sta = sta_info_get_bss(sdata, addr);
1009 ret = __sta_info_destroy(sta);
1010 mutex_unlock(&sdata->local->sta_mtx);
1015 static void sta_info_cleanup(unsigned long data)
1017 struct ieee80211_local *local = (struct ieee80211_local *) data;
1018 struct sta_info *sta;
1019 bool timer_needed = false;
1022 list_for_each_entry_rcu(sta, &local->sta_list, list)
1023 if (sta_info_cleanup_expire_buffered(local, sta))
1024 timer_needed = true;
1027 if (local->quiescing)
1033 mod_timer(&local->sta_cleanup,
1034 round_jiffies(jiffies + STA_INFO_CLEANUP_INTERVAL));
1037 u32 sta_addr_hash(const void *key, u32 length, u32 seed)
1039 return jhash(key, ETH_ALEN, seed);
1042 int sta_info_init(struct ieee80211_local *local)
1046 err = rhashtable_init(&local->sta_hash, &sta_rht_params);
1050 spin_lock_init(&local->tim_lock);
1051 mutex_init(&local->sta_mtx);
1052 INIT_LIST_HEAD(&local->sta_list);
1054 setup_timer(&local->sta_cleanup, sta_info_cleanup,
1055 (unsigned long)local);
1059 void sta_info_stop(struct ieee80211_local *local)
1061 del_timer_sync(&local->sta_cleanup);
1062 rhashtable_destroy(&local->sta_hash);
1066 int __sta_info_flush(struct ieee80211_sub_if_data *sdata, bool vlans)
1068 struct ieee80211_local *local = sdata->local;
1069 struct sta_info *sta, *tmp;
1070 LIST_HEAD(free_list);
1075 WARN_ON(vlans && sdata->vif.type != NL80211_IFTYPE_AP);
1076 WARN_ON(vlans && !sdata->bss);
1078 mutex_lock(&local->sta_mtx);
1079 list_for_each_entry_safe(sta, tmp, &local->sta_list, list) {
1080 if (sdata == sta->sdata ||
1081 (vlans && sdata->bss == sta->sdata->bss)) {
1082 if (!WARN_ON(__sta_info_destroy_part1(sta)))
1083 list_add(&sta->free_list, &free_list);
1088 if (!list_empty(&free_list)) {
1090 list_for_each_entry_safe(sta, tmp, &free_list, free_list)
1091 __sta_info_destroy_part2(sta);
1093 mutex_unlock(&local->sta_mtx);
1098 void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata,
1099 unsigned long exp_time)
1101 struct ieee80211_local *local = sdata->local;
1102 struct sta_info *sta, *tmp;
1104 mutex_lock(&local->sta_mtx);
1106 list_for_each_entry_safe(sta, tmp, &local->sta_list, list) {
1107 unsigned long last_active = ieee80211_sta_last_active(sta);
1109 if (sdata != sta->sdata)
1112 if (time_is_before_jiffies(last_active + exp_time)) {
1113 sta_dbg(sta->sdata, "expiring inactive STA %pM\n",
1116 if (ieee80211_vif_is_mesh(&sdata->vif) &&
1117 test_sta_flag(sta, WLAN_STA_PS_STA))
1118 atomic_dec(&sdata->u.mesh.ps.num_sta_ps);
1120 WARN_ON(__sta_info_destroy(sta));
1124 mutex_unlock(&local->sta_mtx);
1127 struct ieee80211_sta *ieee80211_find_sta_by_ifaddr(struct ieee80211_hw *hw,
1129 const u8 *localaddr)
1131 struct ieee80211_local *local = hw_to_local(hw);
1132 struct sta_info *sta;
1133 struct rhash_head *tmp;
1134 const struct bucket_table *tbl;
1136 tbl = rht_dereference_rcu(local->sta_hash.tbl, &local->sta_hash);
1139 * Just return a random station if localaddr is NULL
1140 * ... first in list.
1142 for_each_sta_info(local, tbl, addr, sta, tmp) {
1144 !ether_addr_equal(sta->sdata->vif.addr, localaddr))
1153 EXPORT_SYMBOL_GPL(ieee80211_find_sta_by_ifaddr);
1155 struct ieee80211_sta *ieee80211_find_sta(struct ieee80211_vif *vif,
1158 struct sta_info *sta;
1163 sta = sta_info_get_bss(vif_to_sdata(vif), addr);
1172 EXPORT_SYMBOL(ieee80211_find_sta);
1174 /* powersave support code */
1175 void ieee80211_sta_ps_deliver_wakeup(struct sta_info *sta)
1177 struct ieee80211_sub_if_data *sdata = sta->sdata;
1178 struct ieee80211_local *local = sdata->local;
1179 struct sk_buff_head pending;
1180 int filtered = 0, buffered = 0, ac, i;
1181 unsigned long flags;
1184 if (sdata->vif.type == NL80211_IFTYPE_AP_VLAN)
1185 sdata = container_of(sdata->bss, struct ieee80211_sub_if_data,
1188 if (sdata->vif.type == NL80211_IFTYPE_AP)
1189 ps = &sdata->bss->ps;
1190 else if (ieee80211_vif_is_mesh(&sdata->vif))
1191 ps = &sdata->u.mesh.ps;
1195 clear_sta_flag(sta, WLAN_STA_SP);
1197 BUILD_BUG_ON(BITS_TO_LONGS(IEEE80211_NUM_TIDS) > 1);
1198 sta->driver_buffered_tids = 0;
1199 sta->txq_buffered_tids = 0;
1201 if (!ieee80211_hw_check(&local->hw, AP_LINK_PS))
1202 drv_sta_notify(local, sdata, STA_NOTIFY_AWAKE, &sta->sta);
1204 if (sta->sta.txq[0]) {
1205 for (i = 0; i < ARRAY_SIZE(sta->sta.txq); i++) {
1206 struct txq_info *txqi = to_txq_info(sta->sta.txq[i]);
1208 if (!skb_queue_len(&txqi->queue))
1211 drv_wake_tx_queue(local, txqi);
1215 skb_queue_head_init(&pending);
1217 /* sync with ieee80211_tx_h_unicast_ps_buf */
1218 spin_lock(&sta->ps_lock);
1219 /* Send all buffered frames to the station */
1220 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
1221 int count = skb_queue_len(&pending), tmp;
1223 spin_lock_irqsave(&sta->tx_filtered[ac].lock, flags);
1224 skb_queue_splice_tail_init(&sta->tx_filtered[ac], &pending);
1225 spin_unlock_irqrestore(&sta->tx_filtered[ac].lock, flags);
1226 tmp = skb_queue_len(&pending);
1227 filtered += tmp - count;
1230 spin_lock_irqsave(&sta->ps_tx_buf[ac].lock, flags);
1231 skb_queue_splice_tail_init(&sta->ps_tx_buf[ac], &pending);
1232 spin_unlock_irqrestore(&sta->ps_tx_buf[ac].lock, flags);
1233 tmp = skb_queue_len(&pending);
1234 buffered += tmp - count;
1237 ieee80211_add_pending_skbs(local, &pending);
1239 /* now we're no longer in the deliver code */
1240 clear_sta_flag(sta, WLAN_STA_PS_DELIVER);
1242 /* The station might have polled and then woken up before we responded,
1243 * so clear these flags now to avoid them sticking around.
1245 clear_sta_flag(sta, WLAN_STA_PSPOLL);
1246 clear_sta_flag(sta, WLAN_STA_UAPSD);
1247 spin_unlock(&sta->ps_lock);
1249 atomic_dec(&ps->num_sta_ps);
1251 /* This station just woke up and isn't aware of our SMPS state */
1252 if (!ieee80211_vif_is_mesh(&sdata->vif) &&
1253 !ieee80211_smps_is_restrictive(sta->known_smps_mode,
1254 sdata->smps_mode) &&
1255 sta->known_smps_mode != sdata->bss->req_smps &&
1256 sta_info_tx_streams(sta) != 1) {
1258 "%pM just woke up and MIMO capable - update SMPS\n",
1260 ieee80211_send_smps_action(sdata, sdata->bss->req_smps,
1262 sdata->vif.bss_conf.bssid);
1265 local->total_ps_buffered -= buffered;
1267 sta_info_recalc_tim(sta);
1270 "STA %pM aid %d sending %d filtered/%d PS frames since STA not sleeping anymore\n",
1271 sta->sta.addr, sta->sta.aid, filtered, buffered);
1273 ieee80211_check_fast_xmit(sta);
1276 static void ieee80211_send_null_response(struct sta_info *sta, int tid,
1277 enum ieee80211_frame_release_type reason,
1278 bool call_driver, bool more_data)
1280 struct ieee80211_sub_if_data *sdata = sta->sdata;
1281 struct ieee80211_local *local = sdata->local;
1282 struct ieee80211_qos_hdr *nullfunc;
1283 struct sk_buff *skb;
1284 int size = sizeof(*nullfunc);
1286 bool qos = sta->sta.wme;
1287 struct ieee80211_tx_info *info;
1288 struct ieee80211_chanctx_conf *chanctx_conf;
1291 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
1292 IEEE80211_STYPE_QOS_NULLFUNC |
1293 IEEE80211_FCTL_FROMDS);
1296 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
1297 IEEE80211_STYPE_NULLFUNC |
1298 IEEE80211_FCTL_FROMDS);
1301 skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
1305 skb_reserve(skb, local->hw.extra_tx_headroom);
1307 nullfunc = (void *) skb_put(skb, size);
1308 nullfunc->frame_control = fc;
1309 nullfunc->duration_id = 0;
1310 memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
1311 memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
1312 memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
1313 nullfunc->seq_ctrl = 0;
1315 skb->priority = tid;
1316 skb_set_queue_mapping(skb, ieee802_1d_to_ac[tid]);
1318 nullfunc->qos_ctrl = cpu_to_le16(tid);
1320 if (reason == IEEE80211_FRAME_RELEASE_UAPSD) {
1321 nullfunc->qos_ctrl |=
1322 cpu_to_le16(IEEE80211_QOS_CTL_EOSP);
1324 nullfunc->frame_control |=
1325 cpu_to_le16(IEEE80211_FCTL_MOREDATA);
1329 info = IEEE80211_SKB_CB(skb);
1332 * Tell TX path to send this frame even though the
1333 * STA may still remain is PS mode after this frame
1334 * exchange. Also set EOSP to indicate this packet
1335 * ends the poll/service period.
1337 info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER |
1338 IEEE80211_TX_STATUS_EOSP |
1339 IEEE80211_TX_CTL_REQ_TX_STATUS;
1341 info->control.flags |= IEEE80211_TX_CTRL_PS_RESPONSE;
1344 drv_allow_buffered_frames(local, sta, BIT(tid), 1,
1347 skb->dev = sdata->dev;
1350 chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
1351 if (WARN_ON(!chanctx_conf)) {
1357 info->band = chanctx_conf->def.chan->band;
1358 ieee80211_xmit(sdata, sta, skb);
1362 static int find_highest_prio_tid(unsigned long tids)
1364 /* lower 3 TIDs aren't ordered perfectly */
1366 return fls(tids) - 1;
1367 /* TID 0 is BE just like TID 3 */
1370 return fls(tids) - 1;
1373 /* Indicates if the MORE_DATA bit should be set in the last
1374 * frame obtained by ieee80211_sta_ps_get_frames.
1375 * Note that driver_release_tids is relevant only if
1376 * reason = IEEE80211_FRAME_RELEASE_PSPOLL
1379 ieee80211_sta_ps_more_data(struct sta_info *sta, u8 ignored_acs,
1380 enum ieee80211_frame_release_type reason,
1381 unsigned long driver_release_tids)
1385 /* If the driver has data on more than one TID then
1386 * certainly there's more data if we release just a
1387 * single frame now (from a single TID). This will
1388 * only happen for PS-Poll.
1390 if (reason == IEEE80211_FRAME_RELEASE_PSPOLL &&
1391 hweight16(driver_release_tids) > 1)
1394 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
1395 if (ignored_acs & BIT(ac))
1398 if (!skb_queue_empty(&sta->tx_filtered[ac]) ||
1399 !skb_queue_empty(&sta->ps_tx_buf[ac]))
1407 ieee80211_sta_ps_get_frames(struct sta_info *sta, int n_frames, u8 ignored_acs,
1408 enum ieee80211_frame_release_type reason,
1409 struct sk_buff_head *frames,
1410 unsigned long *driver_release_tids)
1412 struct ieee80211_sub_if_data *sdata = sta->sdata;
1413 struct ieee80211_local *local = sdata->local;
1416 /* Get response frame(s) and more data bit for the last one. */
1417 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
1420 if (ignored_acs & BIT(ac))
1423 tids = ieee80211_tids_for_ac(ac);
1425 /* if we already have frames from software, then we can't also
1426 * release from hardware queues
1428 if (skb_queue_empty(frames)) {
1429 *driver_release_tids |=
1430 sta->driver_buffered_tids & tids;
1431 *driver_release_tids |= sta->txq_buffered_tids & tids;
1434 if (!*driver_release_tids) {
1435 struct sk_buff *skb;
1437 while (n_frames > 0) {
1438 skb = skb_dequeue(&sta->tx_filtered[ac]);
1441 &sta->ps_tx_buf[ac]);
1443 local->total_ps_buffered--;
1448 __skb_queue_tail(frames, skb);
1452 /* If we have more frames buffered on this AC, then abort the
1453 * loop since we can't send more data from other ACs before
1454 * the buffered frames from this.
1456 if (!skb_queue_empty(&sta->tx_filtered[ac]) ||
1457 !skb_queue_empty(&sta->ps_tx_buf[ac]))
1463 ieee80211_sta_ps_deliver_response(struct sta_info *sta,
1464 int n_frames, u8 ignored_acs,
1465 enum ieee80211_frame_release_type reason)
1467 struct ieee80211_sub_if_data *sdata = sta->sdata;
1468 struct ieee80211_local *local = sdata->local;
1469 unsigned long driver_release_tids = 0;
1470 struct sk_buff_head frames;
1473 /* Service or PS-Poll period starts */
1474 set_sta_flag(sta, WLAN_STA_SP);
1476 __skb_queue_head_init(&frames);
1478 ieee80211_sta_ps_get_frames(sta, n_frames, ignored_acs, reason,
1479 &frames, &driver_release_tids);
1481 more_data = ieee80211_sta_ps_more_data(sta, ignored_acs, reason, driver_release_tids);
1483 if (driver_release_tids && reason == IEEE80211_FRAME_RELEASE_PSPOLL)
1484 driver_release_tids =
1485 BIT(find_highest_prio_tid(driver_release_tids));
1487 if (skb_queue_empty(&frames) && !driver_release_tids) {
1491 * For PS-Poll, this can only happen due to a race condition
1492 * when we set the TIM bit and the station notices it, but
1493 * before it can poll for the frame we expire it.
1495 * For uAPSD, this is said in the standard (11.2.1.5 h):
1496 * At each unscheduled SP for a non-AP STA, the AP shall
1497 * attempt to transmit at least one MSDU or MMPDU, but no
1498 * more than the value specified in the Max SP Length field
1499 * in the QoS Capability element from delivery-enabled ACs,
1500 * that are destined for the non-AP STA.
1502 * Since we have no other MSDU/MMPDU, transmit a QoS null frame.
1505 /* This will evaluate to 1, 3, 5 or 7. */
1506 tid = 7 - ((ffs(~ignored_acs) - 1) << 1);
1508 ieee80211_send_null_response(sta, tid, reason, true, false);
1509 } else if (!driver_release_tids) {
1510 struct sk_buff_head pending;
1511 struct sk_buff *skb;
1514 bool need_null = false;
1516 skb_queue_head_init(&pending);
1518 while ((skb = __skb_dequeue(&frames))) {
1519 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1520 struct ieee80211_hdr *hdr = (void *) skb->data;
1526 * Tell TX path to send this frame even though the
1527 * STA may still remain is PS mode after this frame
1530 info->flags |= IEEE80211_TX_CTL_NO_PS_BUFFER;
1531 info->control.flags |= IEEE80211_TX_CTRL_PS_RESPONSE;
1534 * Use MoreData flag to indicate whether there are
1535 * more buffered frames for this STA
1537 if (more_data || !skb_queue_empty(&frames))
1538 hdr->frame_control |=
1539 cpu_to_le16(IEEE80211_FCTL_MOREDATA);
1541 hdr->frame_control &=
1542 cpu_to_le16(~IEEE80211_FCTL_MOREDATA);
1544 if (ieee80211_is_data_qos(hdr->frame_control) ||
1545 ieee80211_is_qos_nullfunc(hdr->frame_control))
1546 qoshdr = ieee80211_get_qos_ctl(hdr);
1548 tids |= BIT(skb->priority);
1550 __skb_queue_tail(&pending, skb);
1552 /* end service period after last frame or add one */
1553 if (!skb_queue_empty(&frames))
1556 if (reason != IEEE80211_FRAME_RELEASE_UAPSD) {
1557 /* for PS-Poll, there's only one frame */
1558 info->flags |= IEEE80211_TX_STATUS_EOSP |
1559 IEEE80211_TX_CTL_REQ_TX_STATUS;
1563 /* For uAPSD, things are a bit more complicated. If the
1564 * last frame has a QoS header (i.e. is a QoS-data or
1565 * QoS-nulldata frame) then just set the EOSP bit there
1567 * If the frame doesn't have a QoS header (which means
1568 * it should be a bufferable MMPDU) then we can't set
1569 * the EOSP bit in the QoS header; add a QoS-nulldata
1570 * frame to the list to send it after the MMPDU.
1572 * Note that this code is only in the mac80211-release
1573 * code path, we assume that the driver will not buffer
1574 * anything but QoS-data frames, or if it does, will
1575 * create the QoS-nulldata frame by itself if needed.
1577 * Cf. 802.11-2012 10.2.1.10 (c).
1580 *qoshdr |= IEEE80211_QOS_CTL_EOSP;
1582 info->flags |= IEEE80211_TX_STATUS_EOSP |
1583 IEEE80211_TX_CTL_REQ_TX_STATUS;
1585 /* The standard isn't completely clear on this
1586 * as it says the more-data bit should be set
1587 * if there are more BUs. The QoS-Null frame
1588 * we're about to send isn't buffered yet, we
1589 * only create it below, but let's pretend it
1590 * was buffered just in case some clients only
1591 * expect more-data=0 when eosp=1.
1593 hdr->frame_control |=
1594 cpu_to_le16(IEEE80211_FCTL_MOREDATA);
1601 drv_allow_buffered_frames(local, sta, tids, num,
1604 ieee80211_add_pending_skbs(local, &pending);
1607 ieee80211_send_null_response(
1608 sta, find_highest_prio_tid(tids),
1609 reason, false, false);
1611 sta_info_recalc_tim(sta);
1613 unsigned long tids = sta->txq_buffered_tids & driver_release_tids;
1617 * We need to release a frame that is buffered somewhere in the
1618 * driver ... it'll have to handle that.
1619 * Note that the driver also has to check the number of frames
1620 * on the TIDs we're releasing from - if there are more than
1621 * n_frames it has to set the more-data bit (if we didn't ask
1622 * it to set it anyway due to other buffered frames); if there
1623 * are fewer than n_frames it has to make sure to adjust that
1624 * to allow the service period to end properly.
1626 drv_release_buffered_frames(local, sta, driver_release_tids,
1627 n_frames, reason, more_data);
1630 * Note that we don't recalculate the TIM bit here as it would
1631 * most likely have no effect at all unless the driver told us
1632 * that the TID(s) became empty before returning here from the
1634 * Either way, however, when the driver tells us that the TID(s)
1635 * became empty or we find that a txq became empty, we'll do the
1636 * TIM recalculation.
1639 if (!sta->sta.txq[0])
1642 for (tid = 0; tid < ARRAY_SIZE(sta->sta.txq); tid++) {
1643 struct txq_info *txqi = to_txq_info(sta->sta.txq[tid]);
1645 if (!(tids & BIT(tid)) || skb_queue_len(&txqi->queue))
1648 sta_info_recalc_tim(sta);
1654 void ieee80211_sta_ps_deliver_poll_response(struct sta_info *sta)
1656 u8 ignore_for_response = sta->sta.uapsd_queues;
1659 * If all ACs are delivery-enabled then we should reply
1660 * from any of them, if only some are enabled we reply
1661 * only from the non-enabled ones.
1663 if (ignore_for_response == BIT(IEEE80211_NUM_ACS) - 1)
1664 ignore_for_response = 0;
1666 ieee80211_sta_ps_deliver_response(sta, 1, ignore_for_response,
1667 IEEE80211_FRAME_RELEASE_PSPOLL);
1670 void ieee80211_sta_ps_deliver_uapsd(struct sta_info *sta)
1672 int n_frames = sta->sta.max_sp;
1673 u8 delivery_enabled = sta->sta.uapsd_queues;
1676 * If we ever grow support for TSPEC this might happen if
1677 * the TSPEC update from hostapd comes in between a trigger
1678 * frame setting WLAN_STA_UAPSD in the RX path and this
1679 * actually getting called.
1681 if (!delivery_enabled)
1684 switch (sta->sta.max_sp) {
1695 /* XXX: what is a good value? */
1700 ieee80211_sta_ps_deliver_response(sta, n_frames, ~delivery_enabled,
1701 IEEE80211_FRAME_RELEASE_UAPSD);
1704 void ieee80211_sta_block_awake(struct ieee80211_hw *hw,
1705 struct ieee80211_sta *pubsta, bool block)
1707 struct sta_info *sta = container_of(pubsta, struct sta_info, sta);
1709 trace_api_sta_block_awake(sta->local, pubsta, block);
1712 set_sta_flag(sta, WLAN_STA_PS_DRIVER);
1713 ieee80211_clear_fast_xmit(sta);
1717 if (!test_sta_flag(sta, WLAN_STA_PS_DRIVER))
1720 if (!test_sta_flag(sta, WLAN_STA_PS_STA)) {
1721 set_sta_flag(sta, WLAN_STA_PS_DELIVER);
1722 clear_sta_flag(sta, WLAN_STA_PS_DRIVER);
1723 ieee80211_queue_work(hw, &sta->drv_deliver_wk);
1724 } else if (test_sta_flag(sta, WLAN_STA_PSPOLL) ||
1725 test_sta_flag(sta, WLAN_STA_UAPSD)) {
1726 /* must be asleep in this case */
1727 clear_sta_flag(sta, WLAN_STA_PS_DRIVER);
1728 ieee80211_queue_work(hw, &sta->drv_deliver_wk);
1730 clear_sta_flag(sta, WLAN_STA_PS_DRIVER);
1731 ieee80211_check_fast_xmit(sta);
1734 EXPORT_SYMBOL(ieee80211_sta_block_awake);
1736 void ieee80211_sta_eosp(struct ieee80211_sta *pubsta)
1738 struct sta_info *sta = container_of(pubsta, struct sta_info, sta);
1739 struct ieee80211_local *local = sta->local;
1741 trace_api_eosp(local, pubsta);
1743 clear_sta_flag(sta, WLAN_STA_SP);
1745 EXPORT_SYMBOL(ieee80211_sta_eosp);
1747 void ieee80211_send_eosp_nullfunc(struct ieee80211_sta *pubsta, int tid)
1749 struct sta_info *sta = container_of(pubsta, struct sta_info, sta);
1750 enum ieee80211_frame_release_type reason;
1753 trace_api_send_eosp_nullfunc(sta->local, pubsta, tid);
1755 reason = IEEE80211_FRAME_RELEASE_UAPSD;
1756 more_data = ieee80211_sta_ps_more_data(sta, ~sta->sta.uapsd_queues,
1759 ieee80211_send_null_response(sta, tid, reason, false, more_data);
1761 EXPORT_SYMBOL(ieee80211_send_eosp_nullfunc);
1763 void ieee80211_sta_set_buffered(struct ieee80211_sta *pubsta,
1764 u8 tid, bool buffered)
1766 struct sta_info *sta = container_of(pubsta, struct sta_info, sta);
1768 if (WARN_ON(tid >= IEEE80211_NUM_TIDS))
1771 trace_api_sta_set_buffered(sta->local, pubsta, tid, buffered);
1774 set_bit(tid, &sta->driver_buffered_tids);
1776 clear_bit(tid, &sta->driver_buffered_tids);
1778 sta_info_recalc_tim(sta);
1780 EXPORT_SYMBOL(ieee80211_sta_set_buffered);
1783 ieee80211_recalc_p2p_go_ps_allowed(struct ieee80211_sub_if_data *sdata)
1785 struct ieee80211_local *local = sdata->local;
1786 bool allow_p2p_go_ps = sdata->vif.p2p;
1787 struct sta_info *sta;
1790 list_for_each_entry_rcu(sta, &local->sta_list, list) {
1791 if (sdata != sta->sdata ||
1792 !test_sta_flag(sta, WLAN_STA_ASSOC))
1794 if (!sta->sta.support_p2p_ps) {
1795 allow_p2p_go_ps = false;
1801 if (allow_p2p_go_ps != sdata->vif.bss_conf.allow_p2p_go_ps) {
1802 sdata->vif.bss_conf.allow_p2p_go_ps = allow_p2p_go_ps;
1803 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_P2P_PS);
1807 int sta_info_move_state(struct sta_info *sta,
1808 enum ieee80211_sta_state new_state)
1812 if (sta->sta_state == new_state)
1815 /* check allowed transitions first */
1817 switch (new_state) {
1818 case IEEE80211_STA_NONE:
1819 if (sta->sta_state != IEEE80211_STA_AUTH)
1822 case IEEE80211_STA_AUTH:
1823 if (sta->sta_state != IEEE80211_STA_NONE &&
1824 sta->sta_state != IEEE80211_STA_ASSOC)
1827 case IEEE80211_STA_ASSOC:
1828 if (sta->sta_state != IEEE80211_STA_AUTH &&
1829 sta->sta_state != IEEE80211_STA_AUTHORIZED)
1832 case IEEE80211_STA_AUTHORIZED:
1833 if (sta->sta_state != IEEE80211_STA_ASSOC)
1837 WARN(1, "invalid state %d", new_state);
1841 sta_dbg(sta->sdata, "moving STA %pM to state %d\n",
1842 sta->sta.addr, new_state);
1845 * notify the driver before the actual changes so it can
1846 * fail the transition
1848 if (test_sta_flag(sta, WLAN_STA_INSERTED)) {
1849 int err = drv_sta_state(sta->local, sta->sdata, sta,
1850 sta->sta_state, new_state);
1855 /* reflect the change in all state variables */
1857 switch (new_state) {
1858 case IEEE80211_STA_NONE:
1859 if (sta->sta_state == IEEE80211_STA_AUTH)
1860 clear_bit(WLAN_STA_AUTH, &sta->_flags);
1862 case IEEE80211_STA_AUTH:
1863 if (sta->sta_state == IEEE80211_STA_NONE) {
1864 set_bit(WLAN_STA_AUTH, &sta->_flags);
1865 } else if (sta->sta_state == IEEE80211_STA_ASSOC) {
1866 clear_bit(WLAN_STA_ASSOC, &sta->_flags);
1867 ieee80211_recalc_min_chandef(sta->sdata);
1868 if (!sta->sta.support_p2p_ps)
1869 ieee80211_recalc_p2p_go_ps_allowed(sta->sdata);
1872 case IEEE80211_STA_ASSOC:
1873 if (sta->sta_state == IEEE80211_STA_AUTH) {
1874 set_bit(WLAN_STA_ASSOC, &sta->_flags);
1875 ieee80211_recalc_min_chandef(sta->sdata);
1876 if (!sta->sta.support_p2p_ps)
1877 ieee80211_recalc_p2p_go_ps_allowed(sta->sdata);
1878 } else if (sta->sta_state == IEEE80211_STA_AUTHORIZED) {
1879 if (sta->sdata->vif.type == NL80211_IFTYPE_AP ||
1880 (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1881 !sta->sdata->u.vlan.sta))
1882 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1883 clear_bit(WLAN_STA_AUTHORIZED, &sta->_flags);
1884 ieee80211_clear_fast_xmit(sta);
1885 ieee80211_clear_fast_rx(sta);
1888 case IEEE80211_STA_AUTHORIZED:
1889 if (sta->sta_state == IEEE80211_STA_ASSOC) {
1890 if (sta->sdata->vif.type == NL80211_IFTYPE_AP ||
1891 (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1892 !sta->sdata->u.vlan.sta))
1893 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1894 set_bit(WLAN_STA_AUTHORIZED, &sta->_flags);
1895 ieee80211_check_fast_xmit(sta);
1896 ieee80211_check_fast_rx(sta);
1903 sta->sta_state = new_state;
1908 u8 sta_info_tx_streams(struct sta_info *sta)
1910 struct ieee80211_sta_ht_cap *ht_cap = &sta->sta.ht_cap;
1913 if (!sta->sta.ht_cap.ht_supported)
1916 if (sta->sta.vht_cap.vht_supported) {
1919 le16_to_cpu(sta->sta.vht_cap.vht_mcs.tx_mcs_map);
1921 for (i = 7; i >= 0; i--)
1922 if ((tx_mcs_map & (0x3 << (i * 2))) !=
1923 IEEE80211_VHT_MCS_NOT_SUPPORTED)
1927 if (ht_cap->mcs.rx_mask[3])
1929 else if (ht_cap->mcs.rx_mask[2])
1931 else if (ht_cap->mcs.rx_mask[1])
1936 if (!(ht_cap->mcs.tx_params & IEEE80211_HT_MCS_TX_RX_DIFF))
1939 return ((ht_cap->mcs.tx_params & IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK)
1940 >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT) + 1;
1943 static struct ieee80211_sta_rx_stats *
1944 sta_get_last_rx_stats(struct sta_info *sta)
1946 struct ieee80211_sta_rx_stats *stats = &sta->rx_stats;
1947 struct ieee80211_local *local = sta->local;
1950 if (!ieee80211_hw_check(&local->hw, USES_RSS))
1953 for_each_possible_cpu(cpu) {
1954 struct ieee80211_sta_rx_stats *cpustats;
1956 cpustats = per_cpu_ptr(sta->pcpu_rx_stats, cpu);
1958 if (time_after(cpustats->last_rx, stats->last_rx))
1965 static void sta_stats_decode_rate(struct ieee80211_local *local, u16 rate,
1966 struct rate_info *rinfo)
1968 rinfo->bw = (rate & STA_STATS_RATE_BW_MASK) >>
1969 STA_STATS_RATE_BW_SHIFT;
1971 if (rate & STA_STATS_RATE_VHT) {
1972 rinfo->flags = RATE_INFO_FLAGS_VHT_MCS;
1973 rinfo->mcs = rate & 0xf;
1974 rinfo->nss = (rate & 0xf0) >> 4;
1975 } else if (rate & STA_STATS_RATE_HT) {
1976 rinfo->flags = RATE_INFO_FLAGS_MCS;
1977 rinfo->mcs = rate & 0xff;
1978 } else if (rate & STA_STATS_RATE_LEGACY) {
1979 struct ieee80211_supported_band *sband;
1983 sband = local->hw.wiphy->bands[(rate >> 4) & 0xf];
1984 brate = sband->bitrates[rate & 0xf].bitrate;
1985 if (rinfo->bw == RATE_INFO_BW_5)
1987 else if (rinfo->bw == RATE_INFO_BW_10)
1991 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
1994 if (rate & STA_STATS_RATE_SGI)
1995 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
1998 static void sta_set_rate_info_rx(struct sta_info *sta, struct rate_info *rinfo)
2000 u16 rate = ACCESS_ONCE(sta_get_last_rx_stats(sta)->last_rate);
2002 if (rate == STA_STATS_RATE_INVALID)
2005 sta_stats_decode_rate(sta->local, rate, rinfo);
2008 static void sta_set_tidstats(struct sta_info *sta,
2009 struct cfg80211_tid_stats *tidstats,
2012 struct ieee80211_local *local = sta->local;
2014 if (!(tidstats->filled & BIT(NL80211_TID_STATS_RX_MSDU))) {
2018 start = u64_stats_fetch_begin(&sta->rx_stats.syncp);
2019 tidstats->rx_msdu = sta->rx_stats.msdu[tid];
2020 } while (u64_stats_fetch_retry(&sta->rx_stats.syncp, start));
2022 tidstats->filled |= BIT(NL80211_TID_STATS_RX_MSDU);
2025 if (!(tidstats->filled & BIT(NL80211_TID_STATS_TX_MSDU))) {
2026 tidstats->filled |= BIT(NL80211_TID_STATS_TX_MSDU);
2027 tidstats->tx_msdu = sta->tx_stats.msdu[tid];
2030 if (!(tidstats->filled & BIT(NL80211_TID_STATS_TX_MSDU_RETRIES)) &&
2031 ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) {
2032 tidstats->filled |= BIT(NL80211_TID_STATS_TX_MSDU_RETRIES);
2033 tidstats->tx_msdu_retries = sta->status_stats.msdu_retries[tid];
2036 if (!(tidstats->filled & BIT(NL80211_TID_STATS_TX_MSDU_FAILED)) &&
2037 ieee80211_hw_check(&local->hw, REPORTS_TX_ACK_STATUS)) {
2038 tidstats->filled |= BIT(NL80211_TID_STATS_TX_MSDU_FAILED);
2039 tidstats->tx_msdu_failed = sta->status_stats.msdu_failed[tid];
2043 static inline u64 sta_get_stats_bytes(struct ieee80211_sta_rx_stats *rxstats)
2049 start = u64_stats_fetch_begin(&rxstats->syncp);
2050 value = rxstats->bytes;
2051 } while (u64_stats_fetch_retry(&rxstats->syncp, start));
2056 void sta_set_sinfo(struct sta_info *sta, struct station_info *sinfo)
2058 struct ieee80211_sub_if_data *sdata = sta->sdata;
2059 struct ieee80211_local *local = sdata->local;
2060 struct rate_control_ref *ref = NULL;
2063 struct ieee80211_sta_rx_stats *last_rxstats;
2065 last_rxstats = sta_get_last_rx_stats(sta);
2067 if (test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
2068 ref = local->rate_ctrl;
2070 sinfo->generation = sdata->local->sta_generation;
2072 /* do before driver, so beacon filtering drivers have a
2073 * chance to e.g. just add the number of filtered beacons
2074 * (or just modify the value entirely, of course)
2076 if (sdata->vif.type == NL80211_IFTYPE_STATION)
2077 sinfo->rx_beacon = sdata->u.mgd.count_beacon_signal;
2079 drv_sta_statistics(local, sdata, &sta->sta, sinfo);
2081 sinfo->filled |= BIT(NL80211_STA_INFO_INACTIVE_TIME) |
2082 BIT(NL80211_STA_INFO_STA_FLAGS) |
2083 BIT(NL80211_STA_INFO_BSS_PARAM) |
2084 BIT(NL80211_STA_INFO_CONNECTED_TIME) |
2085 BIT(NL80211_STA_INFO_RX_DROP_MISC);
2087 if (sdata->vif.type == NL80211_IFTYPE_STATION) {
2088 sinfo->beacon_loss_count = sdata->u.mgd.beacon_loss_count;
2089 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_LOSS);
2092 sinfo->connected_time = ktime_get_seconds() - sta->last_connected;
2093 sinfo->inactive_time =
2094 jiffies_to_msecs(jiffies - ieee80211_sta_last_active(sta));
2096 if (!(sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES64) |
2097 BIT(NL80211_STA_INFO_TX_BYTES)))) {
2098 sinfo->tx_bytes = 0;
2099 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
2100 sinfo->tx_bytes += sta->tx_stats.bytes[ac];
2101 sinfo->filled |= BIT(NL80211_STA_INFO_TX_BYTES64);
2104 if (!(sinfo->filled & BIT(NL80211_STA_INFO_TX_PACKETS))) {
2105 sinfo->tx_packets = 0;
2106 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
2107 sinfo->tx_packets += sta->tx_stats.packets[ac];
2108 sinfo->filled |= BIT(NL80211_STA_INFO_TX_PACKETS);
2111 if (!(sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES64) |
2112 BIT(NL80211_STA_INFO_RX_BYTES)))) {
2113 sinfo->rx_bytes += sta_get_stats_bytes(&sta->rx_stats);
2115 if (sta->pcpu_rx_stats) {
2116 for_each_possible_cpu(cpu) {
2117 struct ieee80211_sta_rx_stats *cpurxs;
2119 cpurxs = per_cpu_ptr(sta->pcpu_rx_stats, cpu);
2120 sinfo->rx_bytes += sta_get_stats_bytes(cpurxs);
2124 sinfo->filled |= BIT(NL80211_STA_INFO_RX_BYTES64);
2127 if (!(sinfo->filled & BIT(NL80211_STA_INFO_RX_PACKETS))) {
2128 sinfo->rx_packets = sta->rx_stats.packets;
2129 if (sta->pcpu_rx_stats) {
2130 for_each_possible_cpu(cpu) {
2131 struct ieee80211_sta_rx_stats *cpurxs;
2133 cpurxs = per_cpu_ptr(sta->pcpu_rx_stats, cpu);
2134 sinfo->rx_packets += cpurxs->packets;
2137 sinfo->filled |= BIT(NL80211_STA_INFO_RX_PACKETS);
2140 if (!(sinfo->filled & BIT(NL80211_STA_INFO_TX_RETRIES))) {
2141 sinfo->tx_retries = sta->status_stats.retry_count;
2142 sinfo->filled |= BIT(NL80211_STA_INFO_TX_RETRIES);
2145 if (!(sinfo->filled & BIT(NL80211_STA_INFO_TX_FAILED))) {
2146 sinfo->tx_failed = sta->status_stats.retry_failed;
2147 sinfo->filled |= BIT(NL80211_STA_INFO_TX_FAILED);
2150 sinfo->rx_dropped_misc = sta->rx_stats.dropped;
2151 if (sta->pcpu_rx_stats) {
2152 for_each_possible_cpu(cpu) {
2153 struct ieee80211_sta_rx_stats *cpurxs;
2155 cpurxs = per_cpu_ptr(sta->pcpu_rx_stats, cpu);
2156 sinfo->rx_packets += cpurxs->dropped;
2160 if (sdata->vif.type == NL80211_IFTYPE_STATION &&
2161 !(sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER)) {
2162 sinfo->filled |= BIT(NL80211_STA_INFO_BEACON_RX) |
2163 BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG);
2164 sinfo->rx_beacon_signal_avg = ieee80211_ave_rssi(&sdata->vif);
2167 if (ieee80211_hw_check(&sta->local->hw, SIGNAL_DBM) ||
2168 ieee80211_hw_check(&sta->local->hw, SIGNAL_UNSPEC)) {
2169 if (!(sinfo->filled & BIT(NL80211_STA_INFO_SIGNAL))) {
2170 sinfo->signal = (s8)last_rxstats->last_signal;
2171 sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL);
2174 if (!sta->pcpu_rx_stats &&
2175 !(sinfo->filled & BIT(NL80211_STA_INFO_SIGNAL_AVG))) {
2177 -ewma_signal_read(&sta->rx_stats_avg.signal);
2178 sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL_AVG);
2182 /* for the average - if pcpu_rx_stats isn't set - rxstats must point to
2183 * the sta->rx_stats struct, so the check here is fine with and without
2186 if (last_rxstats->chains &&
2187 !(sinfo->filled & (BIT(NL80211_STA_INFO_CHAIN_SIGNAL) |
2188 BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)))) {
2189 sinfo->filled |= BIT(NL80211_STA_INFO_CHAIN_SIGNAL);
2190 if (!sta->pcpu_rx_stats)
2191 sinfo->filled |= BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG);
2193 sinfo->chains = last_rxstats->chains;
2195 for (i = 0; i < ARRAY_SIZE(sinfo->chain_signal); i++) {
2196 sinfo->chain_signal[i] =
2197 last_rxstats->chain_signal_last[i];
2198 sinfo->chain_signal_avg[i] =
2199 -ewma_signal_read(&sta->rx_stats_avg.chain_signal[i]);
2203 if (!(sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE))) {
2204 sta_set_rate_info_tx(sta, &sta->tx_stats.last_rate,
2206 sinfo->filled |= BIT(NL80211_STA_INFO_TX_BITRATE);
2209 if (!(sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE))) {
2210 sta_set_rate_info_rx(sta, &sinfo->rxrate);
2211 sinfo->filled |= BIT(NL80211_STA_INFO_RX_BITRATE);
2214 sinfo->filled |= BIT(NL80211_STA_INFO_TID_STATS);
2215 for (i = 0; i < IEEE80211_NUM_TIDS + 1; i++) {
2216 struct cfg80211_tid_stats *tidstats = &sinfo->pertid[i];
2218 sta_set_tidstats(sta, tidstats, i);
2221 if (ieee80211_vif_is_mesh(&sdata->vif)) {
2222 #ifdef CONFIG_MAC80211_MESH
2223 sinfo->filled |= BIT(NL80211_STA_INFO_LLID) |
2224 BIT(NL80211_STA_INFO_PLID) |
2225 BIT(NL80211_STA_INFO_PLINK_STATE) |
2226 BIT(NL80211_STA_INFO_LOCAL_PM) |
2227 BIT(NL80211_STA_INFO_PEER_PM) |
2228 BIT(NL80211_STA_INFO_NONPEER_PM);
2230 sinfo->llid = sta->mesh->llid;
2231 sinfo->plid = sta->mesh->plid;
2232 sinfo->plink_state = sta->mesh->plink_state;
2233 if (test_sta_flag(sta, WLAN_STA_TOFFSET_KNOWN)) {
2234 sinfo->filled |= BIT(NL80211_STA_INFO_T_OFFSET);
2235 sinfo->t_offset = sta->mesh->t_offset;
2237 sinfo->local_pm = sta->mesh->local_pm;
2238 sinfo->peer_pm = sta->mesh->peer_pm;
2239 sinfo->nonpeer_pm = sta->mesh->nonpeer_pm;
2243 sinfo->bss_param.flags = 0;
2244 if (sdata->vif.bss_conf.use_cts_prot)
2245 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
2246 if (sdata->vif.bss_conf.use_short_preamble)
2247 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
2248 if (sdata->vif.bss_conf.use_short_slot)
2249 sinfo->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
2250 sinfo->bss_param.dtim_period = sdata->vif.bss_conf.dtim_period;
2251 sinfo->bss_param.beacon_interval = sdata->vif.bss_conf.beacon_int;
2253 sinfo->sta_flags.set = 0;
2254 sinfo->sta_flags.mask = BIT(NL80211_STA_FLAG_AUTHORIZED) |
2255 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) |
2256 BIT(NL80211_STA_FLAG_WME) |
2257 BIT(NL80211_STA_FLAG_MFP) |
2258 BIT(NL80211_STA_FLAG_AUTHENTICATED) |
2259 BIT(NL80211_STA_FLAG_ASSOCIATED) |
2260 BIT(NL80211_STA_FLAG_TDLS_PEER);
2261 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2262 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHORIZED);
2263 if (test_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE))
2264 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
2266 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_WME);
2267 if (test_sta_flag(sta, WLAN_STA_MFP))
2268 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_MFP);
2269 if (test_sta_flag(sta, WLAN_STA_AUTH))
2270 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
2271 if (test_sta_flag(sta, WLAN_STA_ASSOC))
2272 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
2273 if (test_sta_flag(sta, WLAN_STA_TDLS_PEER))
2274 sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
2276 /* check if the driver has a SW RC implementation */
2277 if (ref && ref->ops->get_expected_throughput)
2278 thr = ref->ops->get_expected_throughput(sta->rate_ctrl_priv);
2280 thr = drv_get_expected_throughput(local, &sta->sta);
2283 sinfo->filled |= BIT(NL80211_STA_INFO_EXPECTED_THROUGHPUT);
2284 sinfo->expected_throughput = thr;
2288 unsigned long ieee80211_sta_last_active(struct sta_info *sta)
2290 struct ieee80211_sta_rx_stats *stats = sta_get_last_rx_stats(sta);
2292 if (time_after(stats->last_rx, sta->status_stats.last_ack))
2293 return stats->last_rx;
2294 return sta->status_stats.last_ack;