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 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
260 /* Caller must hold local->sta_mtx */
261 static void sta_info_hash_add(struct ieee80211_local
*local
,
262 struct sta_info
*sta
)
264 rhashtable_insert_fast(&local
->sta_hash
, &sta
->hash_node
,
268 static void sta_deliver_ps_frames(struct work_struct
*wk
)
270 struct sta_info
*sta
;
272 sta
= container_of(wk
, struct sta_info
, drv_deliver_wk
);
278 if (!test_sta_flag(sta
, WLAN_STA_PS_STA
))
279 ieee80211_sta_ps_deliver_wakeup(sta
);
280 else if (test_and_clear_sta_flag(sta
, WLAN_STA_PSPOLL
))
281 ieee80211_sta_ps_deliver_poll_response(sta
);
282 else if (test_and_clear_sta_flag(sta
, WLAN_STA_UAPSD
))
283 ieee80211_sta_ps_deliver_uapsd(sta
);
287 static int sta_prepare_rate_control(struct ieee80211_local
*local
,
288 struct sta_info
*sta
, gfp_t gfp
)
290 if (ieee80211_hw_check(&local
->hw
, HAS_RATE_CONTROL
))
293 sta
->rate_ctrl
= local
->rate_ctrl
;
294 sta
->rate_ctrl_priv
= rate_control_alloc_sta(sta
->rate_ctrl
,
296 if (!sta
->rate_ctrl_priv
)
302 struct sta_info
*sta_info_alloc(struct ieee80211_sub_if_data
*sdata
,
303 const u8
*addr
, gfp_t gfp
)
305 struct ieee80211_local
*local
= sdata
->local
;
306 struct ieee80211_hw
*hw
= &local
->hw
;
307 struct sta_info
*sta
;
310 sta
= kzalloc(sizeof(*sta
) + hw
->sta_data_size
, gfp
);
314 spin_lock_init(&sta
->lock
);
315 spin_lock_init(&sta
->ps_lock
);
316 INIT_WORK(&sta
->drv_deliver_wk
, sta_deliver_ps_frames
);
317 INIT_WORK(&sta
->ampdu_mlme
.work
, ieee80211_ba_session_work
);
318 mutex_init(&sta
->ampdu_mlme
.mtx
);
319 #ifdef CONFIG_MAC80211_MESH
320 if (ieee80211_vif_is_mesh(&sdata
->vif
)) {
321 sta
->mesh
= kzalloc(sizeof(*sta
->mesh
), gfp
);
324 spin_lock_init(&sta
->mesh
->plink_lock
);
325 if (ieee80211_vif_is_mesh(&sdata
->vif
) &&
326 !sdata
->u
.mesh
.user_mpm
)
327 init_timer(&sta
->mesh
->plink_timer
);
328 sta
->mesh
->nonpeer_pm
= NL80211_MESH_POWER_ACTIVE
;
332 memcpy(sta
->addr
, addr
, ETH_ALEN
);
333 memcpy(sta
->sta
.addr
, addr
, ETH_ALEN
);
336 sta
->rx_stats
.last_rx
= jiffies
;
338 sta
->sta_state
= IEEE80211_STA_NONE
;
340 /* Mark TID as unreserved */
341 sta
->reserved_tid
= IEEE80211_TID_UNRESERVED
;
343 sta
->last_connected
= ktime_get_seconds();
344 ewma_signal_init(&sta
->rx_stats
.avg_signal
);
345 for (i
= 0; i
< ARRAY_SIZE(sta
->rx_stats
.chain_signal_avg
); i
++)
346 ewma_signal_init(&sta
->rx_stats
.chain_signal_avg
[i
]);
348 if (local
->ops
->wake_tx_queue
) {
350 int size
= sizeof(struct txq_info
) +
351 ALIGN(hw
->txq_data_size
, sizeof(void *));
353 txq_data
= kcalloc(ARRAY_SIZE(sta
->sta
.txq
), size
, gfp
);
357 for (i
= 0; i
< ARRAY_SIZE(sta
->sta
.txq
); i
++) {
358 struct txq_info
*txq
= txq_data
+ i
* size
;
360 ieee80211_init_tx_queue(sdata
, sta
, txq
, i
);
364 if (sta_prepare_rate_control(local
, sta
, gfp
))
367 for (i
= 0; i
< IEEE80211_NUM_TIDS
; i
++) {
369 * timer_to_tid must be initialized with identity mapping
370 * to enable session_timer's data differentiation. See
371 * sta_rx_agg_session_timer_expired for usage.
373 sta
->timer_to_tid
[i
] = i
;
375 for (i
= 0; i
< IEEE80211_NUM_ACS
; i
++) {
376 skb_queue_head_init(&sta
->ps_tx_buf
[i
]);
377 skb_queue_head_init(&sta
->tx_filtered
[i
]);
380 for (i
= 0; i
< IEEE80211_NUM_TIDS
; i
++)
381 sta
->last_seq_ctrl
[i
] = cpu_to_le16(USHRT_MAX
);
383 sta
->sta
.smps_mode
= IEEE80211_SMPS_OFF
;
384 if (sdata
->vif
.type
== NL80211_IFTYPE_AP
||
385 sdata
->vif
.type
== NL80211_IFTYPE_AP_VLAN
) {
386 struct ieee80211_supported_band
*sband
=
387 hw
->wiphy
->bands
[ieee80211_get_sdata_band(sdata
)];
388 u8 smps
= (sband
->ht_cap
.cap
& IEEE80211_HT_CAP_SM_PS
) >>
389 IEEE80211_HT_CAP_SM_PS_SHIFT
;
391 * Assume that hostapd advertises our caps in the beacon and
392 * this is the known_smps_mode for a station that just assciated
395 case WLAN_HT_SMPS_CONTROL_DISABLED
:
396 sta
->known_smps_mode
= IEEE80211_SMPS_OFF
;
398 case WLAN_HT_SMPS_CONTROL_STATIC
:
399 sta
->known_smps_mode
= IEEE80211_SMPS_STATIC
;
401 case WLAN_HT_SMPS_CONTROL_DYNAMIC
:
402 sta
->known_smps_mode
= IEEE80211_SMPS_DYNAMIC
;
409 sta_dbg(sdata
, "Allocated STA %pM\n", sta
->sta
.addr
);
415 kfree(to_txq_info(sta
->sta
.txq
[0]));
417 #ifdef CONFIG_MAC80211_MESH
424 static int sta_info_insert_check(struct sta_info
*sta
)
426 struct ieee80211_sub_if_data
*sdata
= sta
->sdata
;
429 * Can't be a WARN_ON because it can be triggered through a race:
430 * something inserts a STA (on one CPU) without holding the RTNL
431 * and another CPU turns off the net device.
433 if (unlikely(!ieee80211_sdata_running(sdata
)))
436 if (WARN_ON(ether_addr_equal(sta
->sta
.addr
, sdata
->vif
.addr
) ||
437 is_multicast_ether_addr(sta
->sta
.addr
)))
440 /* Strictly speaking this isn't necessary as we hold the mutex, but
441 * the rhashtable code can't really deal with that distinction. We
442 * do require the mutex for correctness though.
445 lockdep_assert_held(&sdata
->local
->sta_mtx
);
446 if (ieee80211_hw_check(&sdata
->local
->hw
, NEEDS_UNIQUE_STA_ADDR
) &&
447 ieee80211_find_sta_by_ifaddr(&sdata
->local
->hw
, sta
->addr
, NULL
)) {
456 static int sta_info_insert_drv_state(struct ieee80211_local
*local
,
457 struct ieee80211_sub_if_data
*sdata
,
458 struct sta_info
*sta
)
460 enum ieee80211_sta_state state
;
463 for (state
= IEEE80211_STA_NOTEXIST
; state
< sta
->sta_state
; state
++) {
464 err
= drv_sta_state(local
, sdata
, sta
, state
, state
+ 1);
471 * Drivers using legacy sta_add/sta_remove callbacks only
472 * get uploaded set to true after sta_add is called.
474 if (!local
->ops
->sta_add
)
475 sta
->uploaded
= true;
479 if (sdata
->vif
.type
== NL80211_IFTYPE_ADHOC
) {
481 "failed to move IBSS STA %pM to state %d (%d) - keeping it anyway\n",
482 sta
->sta
.addr
, state
+ 1, err
);
486 /* unwind on error */
487 for (; state
> IEEE80211_STA_NOTEXIST
; state
--)
488 WARN_ON(drv_sta_state(local
, sdata
, sta
, state
, state
- 1));
494 * should be called with sta_mtx locked
495 * this function replaces the mutex lock
498 static int sta_info_insert_finish(struct sta_info
*sta
) __acquires(RCU
)
500 struct ieee80211_local
*local
= sta
->local
;
501 struct ieee80211_sub_if_data
*sdata
= sta
->sdata
;
502 struct station_info
*sinfo
;
505 lockdep_assert_held(&local
->sta_mtx
);
507 sinfo
= kzalloc(sizeof(struct station_info
), GFP_KERNEL
);
513 /* check if STA exists already */
514 if (sta_info_get_bss(sdata
, sta
->sta
.addr
)) {
520 local
->sta_generation
++;
523 /* simplify things and don't accept BA sessions yet */
524 set_sta_flag(sta
, WLAN_STA_BLOCK_BA
);
526 /* make the station visible */
527 sta_info_hash_add(local
, sta
);
529 list_add_tail_rcu(&sta
->list
, &local
->sta_list
);
532 err
= sta_info_insert_drv_state(local
, sdata
, sta
);
536 set_sta_flag(sta
, WLAN_STA_INSERTED
);
537 /* accept BA sessions now */
538 clear_sta_flag(sta
, WLAN_STA_BLOCK_BA
);
540 ieee80211_sta_debugfs_add(sta
);
541 rate_control_add_sta_debugfs(sta
);
543 sinfo
->generation
= local
->sta_generation
;
544 cfg80211_new_sta(sdata
->dev
, sta
->sta
.addr
, sinfo
, GFP_KERNEL
);
547 sta_dbg(sdata
, "Inserted STA %pM\n", sta
->sta
.addr
);
549 /* move reference to rcu-protected */
551 mutex_unlock(&local
->sta_mtx
);
553 if (ieee80211_vif_is_mesh(&sdata
->vif
))
554 mesh_accept_plinks_update(sdata
);
558 sta_info_hash_del(local
, sta
);
559 list_del_rcu(&sta
->list
);
562 __cleanup_single_sta(sta
);
564 mutex_unlock(&local
->sta_mtx
);
570 int sta_info_insert_rcu(struct sta_info
*sta
) __acquires(RCU
)
572 struct ieee80211_local
*local
= sta
->local
;
577 mutex_lock(&local
->sta_mtx
);
579 err
= sta_info_insert_check(sta
);
581 mutex_unlock(&local
->sta_mtx
);
586 err
= sta_info_insert_finish(sta
);
592 sta_info_free(local
, sta
);
596 int sta_info_insert(struct sta_info
*sta
)
598 int err
= sta_info_insert_rcu(sta
);
605 static inline void __bss_tim_set(u8
*tim
, u16 id
)
608 * This format has been mandated by the IEEE specifications,
609 * so this line may not be changed to use the __set_bit() format.
611 tim
[id
/ 8] |= (1 << (id
% 8));
614 static inline void __bss_tim_clear(u8
*tim
, u16 id
)
617 * This format has been mandated by the IEEE specifications,
618 * so this line may not be changed to use the __clear_bit() format.
620 tim
[id
/ 8] &= ~(1 << (id
% 8));
623 static inline bool __bss_tim_get(u8
*tim
, u16 id
)
626 * This format has been mandated by the IEEE specifications,
627 * so this line may not be changed to use the test_bit() format.
629 return tim
[id
/ 8] & (1 << (id
% 8));
632 static unsigned long ieee80211_tids_for_ac(int ac
)
634 /* If we ever support TIDs > 7, this obviously needs to be adjusted */
636 case IEEE80211_AC_VO
:
637 return BIT(6) | BIT(7);
638 case IEEE80211_AC_VI
:
639 return BIT(4) | BIT(5);
640 case IEEE80211_AC_BE
:
641 return BIT(0) | BIT(3);
642 case IEEE80211_AC_BK
:
643 return BIT(1) | BIT(2);
650 static void __sta_info_recalc_tim(struct sta_info
*sta
, bool ignore_pending
)
652 struct ieee80211_local
*local
= sta
->local
;
654 bool indicate_tim
= false;
655 u8 ignore_for_tim
= sta
->sta
.uapsd_queues
;
657 u16 id
= sta
->sta
.aid
;
659 if (sta
->sdata
->vif
.type
== NL80211_IFTYPE_AP
||
660 sta
->sdata
->vif
.type
== NL80211_IFTYPE_AP_VLAN
) {
661 if (WARN_ON_ONCE(!sta
->sdata
->bss
))
664 ps
= &sta
->sdata
->bss
->ps
;
665 #ifdef CONFIG_MAC80211_MESH
666 } else if (ieee80211_vif_is_mesh(&sta
->sdata
->vif
)) {
667 ps
= &sta
->sdata
->u
.mesh
.ps
;
673 /* No need to do anything if the driver does all */
674 if (ieee80211_hw_check(&local
->hw
, AP_LINK_PS
))
681 * If all ACs are delivery-enabled then we should build
682 * the TIM bit for all ACs anyway; if only some are then
683 * we ignore those and build the TIM bit using only the
686 if (ignore_for_tim
== BIT(IEEE80211_NUM_ACS
) - 1)
690 ignore_for_tim
= BIT(IEEE80211_NUM_ACS
) - 1;
692 for (ac
= 0; ac
< IEEE80211_NUM_ACS
; ac
++) {
695 if (ignore_for_tim
& BIT(ac
))
698 indicate_tim
|= !skb_queue_empty(&sta
->tx_filtered
[ac
]) ||
699 !skb_queue_empty(&sta
->ps_tx_buf
[ac
]);
703 tids
= ieee80211_tids_for_ac(ac
);
706 sta
->driver_buffered_tids
& tids
;
708 sta
->txq_buffered_tids
& tids
;
712 spin_lock_bh(&local
->tim_lock
);
714 if (indicate_tim
== __bss_tim_get(ps
->tim
, id
))
718 __bss_tim_set(ps
->tim
, id
);
720 __bss_tim_clear(ps
->tim
, id
);
722 if (local
->ops
->set_tim
&& !WARN_ON(sta
->dead
)) {
723 local
->tim_in_locked_section
= true;
724 drv_set_tim(local
, &sta
->sta
, indicate_tim
);
725 local
->tim_in_locked_section
= false;
729 spin_unlock_bh(&local
->tim_lock
);
732 void sta_info_recalc_tim(struct sta_info
*sta
)
734 __sta_info_recalc_tim(sta
, false);
737 static bool sta_info_buffer_expired(struct sta_info
*sta
, struct sk_buff
*skb
)
739 struct ieee80211_tx_info
*info
;
745 info
= IEEE80211_SKB_CB(skb
);
747 /* Timeout: (2 * listen_interval * beacon_int * 1024 / 1000000) sec */
748 timeout
= (sta
->listen_interval
*
749 sta
->sdata
->vif
.bss_conf
.beacon_int
*
751 if (timeout
< STA_TX_BUFFER_EXPIRE
)
752 timeout
= STA_TX_BUFFER_EXPIRE
;
753 return time_after(jiffies
, info
->control
.jiffies
+ timeout
);
757 static bool sta_info_cleanup_expire_buffered_ac(struct ieee80211_local
*local
,
758 struct sta_info
*sta
, int ac
)
764 * First check for frames that should expire on the filtered
765 * queue. Frames here were rejected by the driver and are on
766 * a separate queue to avoid reordering with normal PS-buffered
767 * frames. They also aren't accounted for right now in the
768 * total_ps_buffered counter.
771 spin_lock_irqsave(&sta
->tx_filtered
[ac
].lock
, flags
);
772 skb
= skb_peek(&sta
->tx_filtered
[ac
]);
773 if (sta_info_buffer_expired(sta
, skb
))
774 skb
= __skb_dequeue(&sta
->tx_filtered
[ac
]);
777 spin_unlock_irqrestore(&sta
->tx_filtered
[ac
].lock
, flags
);
780 * Frames are queued in order, so if this one
781 * hasn't expired yet we can stop testing. If
782 * we actually reached the end of the queue we
783 * also need to stop, of course.
787 ieee80211_free_txskb(&local
->hw
, skb
);
791 * Now also check the normal PS-buffered queue, this will
792 * only find something if the filtered queue was emptied
793 * since the filtered frames are all before the normal PS
797 spin_lock_irqsave(&sta
->ps_tx_buf
[ac
].lock
, flags
);
798 skb
= skb_peek(&sta
->ps_tx_buf
[ac
]);
799 if (sta_info_buffer_expired(sta
, skb
))
800 skb
= __skb_dequeue(&sta
->ps_tx_buf
[ac
]);
803 spin_unlock_irqrestore(&sta
->ps_tx_buf
[ac
].lock
, flags
);
806 * frames are queued in order, so if this one
807 * hasn't expired yet (or we reached the end of
808 * the queue) we can stop testing
813 local
->total_ps_buffered
--;
814 ps_dbg(sta
->sdata
, "Buffered frame expired (STA %pM)\n",
816 ieee80211_free_txskb(&local
->hw
, skb
);
820 * Finally, recalculate the TIM bit for this station -- it might
821 * now be clear because the station was too slow to retrieve its
824 sta_info_recalc_tim(sta
);
827 * Return whether there are any frames still buffered, this is
828 * used to check whether the cleanup timer still needs to run,
829 * if there are no frames we don't need to rearm the timer.
831 return !(skb_queue_empty(&sta
->ps_tx_buf
[ac
]) &&
832 skb_queue_empty(&sta
->tx_filtered
[ac
]));
835 static bool sta_info_cleanup_expire_buffered(struct ieee80211_local
*local
,
836 struct sta_info
*sta
)
838 bool have_buffered
= false;
841 /* This is only necessary for stations on BSS/MBSS interfaces */
842 if (!sta
->sdata
->bss
&&
843 !ieee80211_vif_is_mesh(&sta
->sdata
->vif
))
846 for (ac
= 0; ac
< IEEE80211_NUM_ACS
; ac
++)
848 sta_info_cleanup_expire_buffered_ac(local
, sta
, ac
);
850 return have_buffered
;
853 static int __must_check
__sta_info_destroy_part1(struct sta_info
*sta
)
855 struct ieee80211_local
*local
;
856 struct ieee80211_sub_if_data
*sdata
;
867 lockdep_assert_held(&local
->sta_mtx
);
870 * Before removing the station from the driver and
871 * rate control, it might still start new aggregation
872 * sessions -- block that to make sure the tear-down
873 * will be sufficient.
875 set_sta_flag(sta
, WLAN_STA_BLOCK_BA
);
876 ieee80211_sta_tear_down_BA_sessions(sta
, AGG_STOP_DESTROY_STA
);
878 ret
= sta_info_hash_del(local
, sta
);
883 * for TDLS peers, make sure to return to the base channel before
886 if (test_sta_flag(sta
, WLAN_STA_TDLS_OFF_CHANNEL
)) {
887 drv_tdls_cancel_channel_switch(local
, sdata
, &sta
->sta
);
888 clear_sta_flag(sta
, WLAN_STA_TDLS_OFF_CHANNEL
);
891 list_del_rcu(&sta
->list
);
894 drv_sta_pre_rcu_remove(local
, sta
->sdata
, sta
);
896 if (sdata
->vif
.type
== NL80211_IFTYPE_AP_VLAN
&&
897 rcu_access_pointer(sdata
->u
.vlan
.sta
) == sta
)
898 RCU_INIT_POINTER(sdata
->u
.vlan
.sta
, NULL
);
903 static void __sta_info_destroy_part2(struct sta_info
*sta
)
905 struct ieee80211_local
*local
= sta
->local
;
906 struct ieee80211_sub_if_data
*sdata
= sta
->sdata
;
907 struct station_info
*sinfo
;
911 * NOTE: This assumes at least synchronize_net() was done
912 * after _part1 and before _part2!
916 lockdep_assert_held(&local
->sta_mtx
);
918 /* now keys can no longer be reached */
919 ieee80211_free_sta_keys(local
, sta
);
921 /* disable TIM bit - last chance to tell driver */
922 __sta_info_recalc_tim(sta
, true);
927 local
->sta_generation
++;
929 while (sta
->sta_state
> IEEE80211_STA_NONE
) {
930 ret
= sta_info_move_state(sta
, sta
->sta_state
- 1);
938 ret
= drv_sta_state(local
, sdata
, sta
, IEEE80211_STA_NONE
,
939 IEEE80211_STA_NOTEXIST
);
940 WARN_ON_ONCE(ret
!= 0);
943 sta_dbg(sdata
, "Removed STA %pM\n", sta
->sta
.addr
);
945 sinfo
= kzalloc(sizeof(*sinfo
), GFP_KERNEL
);
947 sta_set_sinfo(sta
, sinfo
);
948 cfg80211_del_sta_sinfo(sdata
->dev
, sta
->sta
.addr
, sinfo
, GFP_KERNEL
);
951 rate_control_remove_sta_debugfs(sta
);
952 ieee80211_sta_debugfs_remove(sta
);
954 cleanup_single_sta(sta
);
957 int __must_check
__sta_info_destroy(struct sta_info
*sta
)
959 int err
= __sta_info_destroy_part1(sta
);
966 __sta_info_destroy_part2(sta
);
971 int sta_info_destroy_addr(struct ieee80211_sub_if_data
*sdata
, const u8
*addr
)
973 struct sta_info
*sta
;
976 mutex_lock(&sdata
->local
->sta_mtx
);
977 sta
= sta_info_get(sdata
, addr
);
978 ret
= __sta_info_destroy(sta
);
979 mutex_unlock(&sdata
->local
->sta_mtx
);
984 int sta_info_destroy_addr_bss(struct ieee80211_sub_if_data
*sdata
,
987 struct sta_info
*sta
;
990 mutex_lock(&sdata
->local
->sta_mtx
);
991 sta
= sta_info_get_bss(sdata
, addr
);
992 ret
= __sta_info_destroy(sta
);
993 mutex_unlock(&sdata
->local
->sta_mtx
);
998 static void sta_info_cleanup(unsigned long data
)
1000 struct ieee80211_local
*local
= (struct ieee80211_local
*) data
;
1001 struct sta_info
*sta
;
1002 bool timer_needed
= false;
1005 list_for_each_entry_rcu(sta
, &local
->sta_list
, list
)
1006 if (sta_info_cleanup_expire_buffered(local
, sta
))
1007 timer_needed
= true;
1010 if (local
->quiescing
)
1016 mod_timer(&local
->sta_cleanup
,
1017 round_jiffies(jiffies
+ STA_INFO_CLEANUP_INTERVAL
));
1020 u32
sta_addr_hash(const void *key
, u32 length
, u32 seed
)
1022 return jhash(key
, ETH_ALEN
, seed
);
1025 int sta_info_init(struct ieee80211_local
*local
)
1029 err
= rhashtable_init(&local
->sta_hash
, &sta_rht_params
);
1033 spin_lock_init(&local
->tim_lock
);
1034 mutex_init(&local
->sta_mtx
);
1035 INIT_LIST_HEAD(&local
->sta_list
);
1037 setup_timer(&local
->sta_cleanup
, sta_info_cleanup
,
1038 (unsigned long)local
);
1042 void sta_info_stop(struct ieee80211_local
*local
)
1044 del_timer_sync(&local
->sta_cleanup
);
1045 rhashtable_destroy(&local
->sta_hash
);
1049 int __sta_info_flush(struct ieee80211_sub_if_data
*sdata
, bool vlans
)
1051 struct ieee80211_local
*local
= sdata
->local
;
1052 struct sta_info
*sta
, *tmp
;
1053 LIST_HEAD(free_list
);
1058 WARN_ON(vlans
&& sdata
->vif
.type
!= NL80211_IFTYPE_AP
);
1059 WARN_ON(vlans
&& !sdata
->bss
);
1061 mutex_lock(&local
->sta_mtx
);
1062 list_for_each_entry_safe(sta
, tmp
, &local
->sta_list
, list
) {
1063 if (sdata
== sta
->sdata
||
1064 (vlans
&& sdata
->bss
== sta
->sdata
->bss
)) {
1065 if (!WARN_ON(__sta_info_destroy_part1(sta
)))
1066 list_add(&sta
->free_list
, &free_list
);
1071 if (!list_empty(&free_list
)) {
1073 list_for_each_entry_safe(sta
, tmp
, &free_list
, free_list
)
1074 __sta_info_destroy_part2(sta
);
1076 mutex_unlock(&local
->sta_mtx
);
1081 void ieee80211_sta_expire(struct ieee80211_sub_if_data
*sdata
,
1082 unsigned long exp_time
)
1084 struct ieee80211_local
*local
= sdata
->local
;
1085 struct sta_info
*sta
, *tmp
;
1087 mutex_lock(&local
->sta_mtx
);
1089 list_for_each_entry_safe(sta
, tmp
, &local
->sta_list
, list
) {
1090 if (sdata
!= sta
->sdata
)
1093 if (time_after(jiffies
, sta
->rx_stats
.last_rx
+ exp_time
)) {
1094 sta_dbg(sta
->sdata
, "expiring inactive STA %pM\n",
1097 if (ieee80211_vif_is_mesh(&sdata
->vif
) &&
1098 test_sta_flag(sta
, WLAN_STA_PS_STA
))
1099 atomic_dec(&sdata
->u
.mesh
.ps
.num_sta_ps
);
1101 WARN_ON(__sta_info_destroy(sta
));
1105 mutex_unlock(&local
->sta_mtx
);
1108 struct ieee80211_sta
*ieee80211_find_sta_by_ifaddr(struct ieee80211_hw
*hw
,
1110 const u8
*localaddr
)
1112 struct ieee80211_local
*local
= hw_to_local(hw
);
1113 struct sta_info
*sta
;
1114 struct rhash_head
*tmp
;
1115 const struct bucket_table
*tbl
;
1117 tbl
= rht_dereference_rcu(local
->sta_hash
.tbl
, &local
->sta_hash
);
1120 * Just return a random station if localaddr is NULL
1121 * ... first in list.
1123 for_each_sta_info(local
, tbl
, addr
, sta
, tmp
) {
1125 !ether_addr_equal(sta
->sdata
->vif
.addr
, localaddr
))
1134 EXPORT_SYMBOL_GPL(ieee80211_find_sta_by_ifaddr
);
1136 struct ieee80211_sta
*ieee80211_find_sta(struct ieee80211_vif
*vif
,
1139 struct sta_info
*sta
;
1144 sta
= sta_info_get_bss(vif_to_sdata(vif
), addr
);
1153 EXPORT_SYMBOL(ieee80211_find_sta
);
1155 /* powersave support code */
1156 void ieee80211_sta_ps_deliver_wakeup(struct sta_info
*sta
)
1158 struct ieee80211_sub_if_data
*sdata
= sta
->sdata
;
1159 struct ieee80211_local
*local
= sdata
->local
;
1160 struct sk_buff_head pending
;
1161 int filtered
= 0, buffered
= 0, ac
, i
;
1162 unsigned long flags
;
1165 if (sdata
->vif
.type
== NL80211_IFTYPE_AP_VLAN
)
1166 sdata
= container_of(sdata
->bss
, struct ieee80211_sub_if_data
,
1169 if (sdata
->vif
.type
== NL80211_IFTYPE_AP
)
1170 ps
= &sdata
->bss
->ps
;
1171 else if (ieee80211_vif_is_mesh(&sdata
->vif
))
1172 ps
= &sdata
->u
.mesh
.ps
;
1176 clear_sta_flag(sta
, WLAN_STA_SP
);
1178 BUILD_BUG_ON(BITS_TO_LONGS(IEEE80211_NUM_TIDS
) > 1);
1179 sta
->driver_buffered_tids
= 0;
1180 sta
->txq_buffered_tids
= 0;
1182 if (!ieee80211_hw_check(&local
->hw
, AP_LINK_PS
))
1183 drv_sta_notify(local
, sdata
, STA_NOTIFY_AWAKE
, &sta
->sta
);
1185 if (sta
->sta
.txq
[0]) {
1186 for (i
= 0; i
< ARRAY_SIZE(sta
->sta
.txq
); i
++) {
1187 struct txq_info
*txqi
= to_txq_info(sta
->sta
.txq
[i
]);
1189 if (!skb_queue_len(&txqi
->queue
))
1192 drv_wake_tx_queue(local
, txqi
);
1196 skb_queue_head_init(&pending
);
1198 /* sync with ieee80211_tx_h_unicast_ps_buf */
1199 spin_lock(&sta
->ps_lock
);
1200 /* Send all buffered frames to the station */
1201 for (ac
= 0; ac
< IEEE80211_NUM_ACS
; ac
++) {
1202 int count
= skb_queue_len(&pending
), tmp
;
1204 spin_lock_irqsave(&sta
->tx_filtered
[ac
].lock
, flags
);
1205 skb_queue_splice_tail_init(&sta
->tx_filtered
[ac
], &pending
);
1206 spin_unlock_irqrestore(&sta
->tx_filtered
[ac
].lock
, flags
);
1207 tmp
= skb_queue_len(&pending
);
1208 filtered
+= tmp
- count
;
1211 spin_lock_irqsave(&sta
->ps_tx_buf
[ac
].lock
, flags
);
1212 skb_queue_splice_tail_init(&sta
->ps_tx_buf
[ac
], &pending
);
1213 spin_unlock_irqrestore(&sta
->ps_tx_buf
[ac
].lock
, flags
);
1214 tmp
= skb_queue_len(&pending
);
1215 buffered
+= tmp
- count
;
1218 ieee80211_add_pending_skbs(local
, &pending
);
1220 /* now we're no longer in the deliver code */
1221 clear_sta_flag(sta
, WLAN_STA_PS_DELIVER
);
1223 /* The station might have polled and then woken up before we responded,
1224 * so clear these flags now to avoid them sticking around.
1226 clear_sta_flag(sta
, WLAN_STA_PSPOLL
);
1227 clear_sta_flag(sta
, WLAN_STA_UAPSD
);
1228 spin_unlock(&sta
->ps_lock
);
1230 atomic_dec(&ps
->num_sta_ps
);
1232 /* This station just woke up and isn't aware of our SMPS state */
1233 if (!ieee80211_vif_is_mesh(&sdata
->vif
) &&
1234 !ieee80211_smps_is_restrictive(sta
->known_smps_mode
,
1235 sdata
->smps_mode
) &&
1236 sta
->known_smps_mode
!= sdata
->bss
->req_smps
&&
1237 sta_info_tx_streams(sta
) != 1) {
1239 "%pM just woke up and MIMO capable - update SMPS\n",
1241 ieee80211_send_smps_action(sdata
, sdata
->bss
->req_smps
,
1243 sdata
->vif
.bss_conf
.bssid
);
1246 local
->total_ps_buffered
-= buffered
;
1248 sta_info_recalc_tim(sta
);
1251 "STA %pM aid %d sending %d filtered/%d PS frames since STA not sleeping anymore\n",
1252 sta
->sta
.addr
, sta
->sta
.aid
, filtered
, buffered
);
1254 ieee80211_check_fast_xmit(sta
);
1257 static void ieee80211_send_null_response(struct sta_info
*sta
, int tid
,
1258 enum ieee80211_frame_release_type reason
,
1259 bool call_driver
, bool more_data
)
1261 struct ieee80211_sub_if_data
*sdata
= sta
->sdata
;
1262 struct ieee80211_local
*local
= sdata
->local
;
1263 struct ieee80211_qos_hdr
*nullfunc
;
1264 struct sk_buff
*skb
;
1265 int size
= sizeof(*nullfunc
);
1267 bool qos
= sta
->sta
.wme
;
1268 struct ieee80211_tx_info
*info
;
1269 struct ieee80211_chanctx_conf
*chanctx_conf
;
1272 fc
= cpu_to_le16(IEEE80211_FTYPE_DATA
|
1273 IEEE80211_STYPE_QOS_NULLFUNC
|
1274 IEEE80211_FCTL_FROMDS
);
1277 fc
= cpu_to_le16(IEEE80211_FTYPE_DATA
|
1278 IEEE80211_STYPE_NULLFUNC
|
1279 IEEE80211_FCTL_FROMDS
);
1282 skb
= dev_alloc_skb(local
->hw
.extra_tx_headroom
+ size
);
1286 skb_reserve(skb
, local
->hw
.extra_tx_headroom
);
1288 nullfunc
= (void *) skb_put(skb
, size
);
1289 nullfunc
->frame_control
= fc
;
1290 nullfunc
->duration_id
= 0;
1291 memcpy(nullfunc
->addr1
, sta
->sta
.addr
, ETH_ALEN
);
1292 memcpy(nullfunc
->addr2
, sdata
->vif
.addr
, ETH_ALEN
);
1293 memcpy(nullfunc
->addr3
, sdata
->vif
.addr
, ETH_ALEN
);
1294 nullfunc
->seq_ctrl
= 0;
1296 skb
->priority
= tid
;
1297 skb_set_queue_mapping(skb
, ieee802_1d_to_ac
[tid
]);
1299 nullfunc
->qos_ctrl
= cpu_to_le16(tid
);
1301 if (reason
== IEEE80211_FRAME_RELEASE_UAPSD
) {
1302 nullfunc
->qos_ctrl
|=
1303 cpu_to_le16(IEEE80211_QOS_CTL_EOSP
);
1305 nullfunc
->frame_control
|=
1306 cpu_to_le16(IEEE80211_FCTL_MOREDATA
);
1310 info
= IEEE80211_SKB_CB(skb
);
1313 * Tell TX path to send this frame even though the
1314 * STA may still remain is PS mode after this frame
1315 * exchange. Also set EOSP to indicate this packet
1316 * ends the poll/service period.
1318 info
->flags
|= IEEE80211_TX_CTL_NO_PS_BUFFER
|
1319 IEEE80211_TX_STATUS_EOSP
|
1320 IEEE80211_TX_CTL_REQ_TX_STATUS
;
1322 info
->control
.flags
|= IEEE80211_TX_CTRL_PS_RESPONSE
;
1325 drv_allow_buffered_frames(local
, sta
, BIT(tid
), 1,
1328 skb
->dev
= sdata
->dev
;
1331 chanctx_conf
= rcu_dereference(sdata
->vif
.chanctx_conf
);
1332 if (WARN_ON(!chanctx_conf
)) {
1338 info
->band
= chanctx_conf
->def
.chan
->band
;
1339 ieee80211_xmit(sdata
, sta
, skb
);
1343 static int find_highest_prio_tid(unsigned long tids
)
1345 /* lower 3 TIDs aren't ordered perfectly */
1347 return fls(tids
) - 1;
1348 /* TID 0 is BE just like TID 3 */
1351 return fls(tids
) - 1;
1354 /* Indicates if the MORE_DATA bit should be set in the last
1355 * frame obtained by ieee80211_sta_ps_get_frames.
1356 * Note that driver_release_tids is relevant only if
1357 * reason = IEEE80211_FRAME_RELEASE_PSPOLL
1360 ieee80211_sta_ps_more_data(struct sta_info
*sta
, u8 ignored_acs
,
1361 enum ieee80211_frame_release_type reason
,
1362 unsigned long driver_release_tids
)
1366 /* If the driver has data on more than one TID then
1367 * certainly there's more data if we release just a
1368 * single frame now (from a single TID). This will
1369 * only happen for PS-Poll.
1371 if (reason
== IEEE80211_FRAME_RELEASE_PSPOLL
&&
1372 hweight16(driver_release_tids
) > 1)
1375 for (ac
= 0; ac
< IEEE80211_NUM_ACS
; ac
++) {
1376 if (ignored_acs
& BIT(ac
))
1379 if (!skb_queue_empty(&sta
->tx_filtered
[ac
]) ||
1380 !skb_queue_empty(&sta
->ps_tx_buf
[ac
]))
1388 ieee80211_sta_ps_get_frames(struct sta_info
*sta
, int n_frames
, u8 ignored_acs
,
1389 enum ieee80211_frame_release_type reason
,
1390 struct sk_buff_head
*frames
,
1391 unsigned long *driver_release_tids
)
1393 struct ieee80211_sub_if_data
*sdata
= sta
->sdata
;
1394 struct ieee80211_local
*local
= sdata
->local
;
1397 /* Get response frame(s) and more data bit for the last one. */
1398 for (ac
= 0; ac
< IEEE80211_NUM_ACS
; ac
++) {
1401 if (ignored_acs
& BIT(ac
))
1404 tids
= ieee80211_tids_for_ac(ac
);
1406 /* if we already have frames from software, then we can't also
1407 * release from hardware queues
1409 if (skb_queue_empty(frames
)) {
1410 *driver_release_tids
|=
1411 sta
->driver_buffered_tids
& tids
;
1412 *driver_release_tids
|= sta
->txq_buffered_tids
& tids
;
1415 if (!*driver_release_tids
) {
1416 struct sk_buff
*skb
;
1418 while (n_frames
> 0) {
1419 skb
= skb_dequeue(&sta
->tx_filtered
[ac
]);
1422 &sta
->ps_tx_buf
[ac
]);
1424 local
->total_ps_buffered
--;
1429 __skb_queue_tail(frames
, skb
);
1433 /* If we have more frames buffered on this AC, then abort the
1434 * loop since we can't send more data from other ACs before
1435 * the buffered frames from this.
1437 if (!skb_queue_empty(&sta
->tx_filtered
[ac
]) ||
1438 !skb_queue_empty(&sta
->ps_tx_buf
[ac
]))
1444 ieee80211_sta_ps_deliver_response(struct sta_info
*sta
,
1445 int n_frames
, u8 ignored_acs
,
1446 enum ieee80211_frame_release_type reason
)
1448 struct ieee80211_sub_if_data
*sdata
= sta
->sdata
;
1449 struct ieee80211_local
*local
= sdata
->local
;
1450 unsigned long driver_release_tids
= 0;
1451 struct sk_buff_head frames
;
1454 /* Service or PS-Poll period starts */
1455 set_sta_flag(sta
, WLAN_STA_SP
);
1457 __skb_queue_head_init(&frames
);
1459 ieee80211_sta_ps_get_frames(sta
, n_frames
, ignored_acs
, reason
,
1460 &frames
, &driver_release_tids
);
1462 more_data
= ieee80211_sta_ps_more_data(sta
, ignored_acs
, reason
, driver_release_tids
);
1464 if (driver_release_tids
&& reason
== IEEE80211_FRAME_RELEASE_PSPOLL
)
1465 driver_release_tids
=
1466 BIT(find_highest_prio_tid(driver_release_tids
));
1468 if (skb_queue_empty(&frames
) && !driver_release_tids
) {
1472 * For PS-Poll, this can only happen due to a race condition
1473 * when we set the TIM bit and the station notices it, but
1474 * before it can poll for the frame we expire it.
1476 * For uAPSD, this is said in the standard (11.2.1.5 h):
1477 * At each unscheduled SP for a non-AP STA, the AP shall
1478 * attempt to transmit at least one MSDU or MMPDU, but no
1479 * more than the value specified in the Max SP Length field
1480 * in the QoS Capability element from delivery-enabled ACs,
1481 * that are destined for the non-AP STA.
1483 * Since we have no other MSDU/MMPDU, transmit a QoS null frame.
1486 /* This will evaluate to 1, 3, 5 or 7. */
1487 tid
= 7 - ((ffs(~ignored_acs
) - 1) << 1);
1489 ieee80211_send_null_response(sta
, tid
, reason
, true, false);
1490 } else if (!driver_release_tids
) {
1491 struct sk_buff_head pending
;
1492 struct sk_buff
*skb
;
1495 bool need_null
= false;
1497 skb_queue_head_init(&pending
);
1499 while ((skb
= __skb_dequeue(&frames
))) {
1500 struct ieee80211_tx_info
*info
= IEEE80211_SKB_CB(skb
);
1501 struct ieee80211_hdr
*hdr
= (void *) skb
->data
;
1507 * Tell TX path to send this frame even though the
1508 * STA may still remain is PS mode after this frame
1511 info
->flags
|= IEEE80211_TX_CTL_NO_PS_BUFFER
;
1512 info
->control
.flags
|= IEEE80211_TX_CTRL_PS_RESPONSE
;
1515 * Use MoreData flag to indicate whether there are
1516 * more buffered frames for this STA
1518 if (more_data
|| !skb_queue_empty(&frames
))
1519 hdr
->frame_control
|=
1520 cpu_to_le16(IEEE80211_FCTL_MOREDATA
);
1522 hdr
->frame_control
&=
1523 cpu_to_le16(~IEEE80211_FCTL_MOREDATA
);
1525 if (ieee80211_is_data_qos(hdr
->frame_control
) ||
1526 ieee80211_is_qos_nullfunc(hdr
->frame_control
))
1527 qoshdr
= ieee80211_get_qos_ctl(hdr
);
1529 tids
|= BIT(skb
->priority
);
1531 __skb_queue_tail(&pending
, skb
);
1533 /* end service period after last frame or add one */
1534 if (!skb_queue_empty(&frames
))
1537 if (reason
!= IEEE80211_FRAME_RELEASE_UAPSD
) {
1538 /* for PS-Poll, there's only one frame */
1539 info
->flags
|= IEEE80211_TX_STATUS_EOSP
|
1540 IEEE80211_TX_CTL_REQ_TX_STATUS
;
1544 /* For uAPSD, things are a bit more complicated. If the
1545 * last frame has a QoS header (i.e. is a QoS-data or
1546 * QoS-nulldata frame) then just set the EOSP bit there
1548 * If the frame doesn't have a QoS header (which means
1549 * it should be a bufferable MMPDU) then we can't set
1550 * the EOSP bit in the QoS header; add a QoS-nulldata
1551 * frame to the list to send it after the MMPDU.
1553 * Note that this code is only in the mac80211-release
1554 * code path, we assume that the driver will not buffer
1555 * anything but QoS-data frames, or if it does, will
1556 * create the QoS-nulldata frame by itself if needed.
1558 * Cf. 802.11-2012 10.2.1.10 (c).
1561 *qoshdr
|= IEEE80211_QOS_CTL_EOSP
;
1563 info
->flags
|= IEEE80211_TX_STATUS_EOSP
|
1564 IEEE80211_TX_CTL_REQ_TX_STATUS
;
1566 /* The standard isn't completely clear on this
1567 * as it says the more-data bit should be set
1568 * if there are more BUs. The QoS-Null frame
1569 * we're about to send isn't buffered yet, we
1570 * only create it below, but let's pretend it
1571 * was buffered just in case some clients only
1572 * expect more-data=0 when eosp=1.
1574 hdr
->frame_control
|=
1575 cpu_to_le16(IEEE80211_FCTL_MOREDATA
);
1582 drv_allow_buffered_frames(local
, sta
, tids
, num
,
1585 ieee80211_add_pending_skbs(local
, &pending
);
1588 ieee80211_send_null_response(
1589 sta
, find_highest_prio_tid(tids
),
1590 reason
, false, false);
1592 sta_info_recalc_tim(sta
);
1594 unsigned long tids
= sta
->txq_buffered_tids
& driver_release_tids
;
1598 * We need to release a frame that is buffered somewhere in the
1599 * driver ... it'll have to handle that.
1600 * Note that the driver also has to check the number of frames
1601 * on the TIDs we're releasing from - if there are more than
1602 * n_frames it has to set the more-data bit (if we didn't ask
1603 * it to set it anyway due to other buffered frames); if there
1604 * are fewer than n_frames it has to make sure to adjust that
1605 * to allow the service period to end properly.
1607 drv_release_buffered_frames(local
, sta
, driver_release_tids
,
1608 n_frames
, reason
, more_data
);
1611 * Note that we don't recalculate the TIM bit here as it would
1612 * most likely have no effect at all unless the driver told us
1613 * that the TID(s) became empty before returning here from the
1615 * Either way, however, when the driver tells us that the TID(s)
1616 * became empty or we find that a txq became empty, we'll do the
1617 * TIM recalculation.
1620 if (!sta
->sta
.txq
[0])
1623 for (tid
= 0; tid
< ARRAY_SIZE(sta
->sta
.txq
); tid
++) {
1624 struct txq_info
*txqi
= to_txq_info(sta
->sta
.txq
[tid
]);
1626 if (!(tids
& BIT(tid
)) || skb_queue_len(&txqi
->queue
))
1629 sta_info_recalc_tim(sta
);
1635 void ieee80211_sta_ps_deliver_poll_response(struct sta_info
*sta
)
1637 u8 ignore_for_response
= sta
->sta
.uapsd_queues
;
1640 * If all ACs are delivery-enabled then we should reply
1641 * from any of them, if only some are enabled we reply
1642 * only from the non-enabled ones.
1644 if (ignore_for_response
== BIT(IEEE80211_NUM_ACS
) - 1)
1645 ignore_for_response
= 0;
1647 ieee80211_sta_ps_deliver_response(sta
, 1, ignore_for_response
,
1648 IEEE80211_FRAME_RELEASE_PSPOLL
);
1651 void ieee80211_sta_ps_deliver_uapsd(struct sta_info
*sta
)
1653 int n_frames
= sta
->sta
.max_sp
;
1654 u8 delivery_enabled
= sta
->sta
.uapsd_queues
;
1657 * If we ever grow support for TSPEC this might happen if
1658 * the TSPEC update from hostapd comes in between a trigger
1659 * frame setting WLAN_STA_UAPSD in the RX path and this
1660 * actually getting called.
1662 if (!delivery_enabled
)
1665 switch (sta
->sta
.max_sp
) {
1676 /* XXX: what is a good value? */
1681 ieee80211_sta_ps_deliver_response(sta
, n_frames
, ~delivery_enabled
,
1682 IEEE80211_FRAME_RELEASE_UAPSD
);
1685 void ieee80211_sta_block_awake(struct ieee80211_hw
*hw
,
1686 struct ieee80211_sta
*pubsta
, bool block
)
1688 struct sta_info
*sta
= container_of(pubsta
, struct sta_info
, sta
);
1690 trace_api_sta_block_awake(sta
->local
, pubsta
, block
);
1693 set_sta_flag(sta
, WLAN_STA_PS_DRIVER
);
1694 ieee80211_clear_fast_xmit(sta
);
1698 if (!test_sta_flag(sta
, WLAN_STA_PS_DRIVER
))
1701 if (!test_sta_flag(sta
, WLAN_STA_PS_STA
)) {
1702 set_sta_flag(sta
, WLAN_STA_PS_DELIVER
);
1703 clear_sta_flag(sta
, WLAN_STA_PS_DRIVER
);
1704 ieee80211_queue_work(hw
, &sta
->drv_deliver_wk
);
1705 } else if (test_sta_flag(sta
, WLAN_STA_PSPOLL
) ||
1706 test_sta_flag(sta
, WLAN_STA_UAPSD
)) {
1707 /* must be asleep in this case */
1708 clear_sta_flag(sta
, WLAN_STA_PS_DRIVER
);
1709 ieee80211_queue_work(hw
, &sta
->drv_deliver_wk
);
1711 clear_sta_flag(sta
, WLAN_STA_PS_DRIVER
);
1712 ieee80211_check_fast_xmit(sta
);
1715 EXPORT_SYMBOL(ieee80211_sta_block_awake
);
1717 void ieee80211_sta_eosp(struct ieee80211_sta
*pubsta
)
1719 struct sta_info
*sta
= container_of(pubsta
, struct sta_info
, sta
);
1720 struct ieee80211_local
*local
= sta
->local
;
1722 trace_api_eosp(local
, pubsta
);
1724 clear_sta_flag(sta
, WLAN_STA_SP
);
1726 EXPORT_SYMBOL(ieee80211_sta_eosp
);
1728 void ieee80211_send_eosp_nullfunc(struct ieee80211_sta
*pubsta
, int tid
)
1730 struct sta_info
*sta
= container_of(pubsta
, struct sta_info
, sta
);
1731 enum ieee80211_frame_release_type reason
;
1734 trace_api_send_eosp_nullfunc(sta
->local
, pubsta
, tid
);
1736 reason
= IEEE80211_FRAME_RELEASE_UAPSD
;
1737 more_data
= ieee80211_sta_ps_more_data(sta
, ~sta
->sta
.uapsd_queues
,
1740 ieee80211_send_null_response(sta
, tid
, reason
, false, more_data
);
1742 EXPORT_SYMBOL(ieee80211_send_eosp_nullfunc
);
1744 void ieee80211_sta_set_buffered(struct ieee80211_sta
*pubsta
,
1745 u8 tid
, bool buffered
)
1747 struct sta_info
*sta
= container_of(pubsta
, struct sta_info
, sta
);
1749 if (WARN_ON(tid
>= IEEE80211_NUM_TIDS
))
1752 trace_api_sta_set_buffered(sta
->local
, pubsta
, tid
, buffered
);
1755 set_bit(tid
, &sta
->driver_buffered_tids
);
1757 clear_bit(tid
, &sta
->driver_buffered_tids
);
1759 sta_info_recalc_tim(sta
);
1761 EXPORT_SYMBOL(ieee80211_sta_set_buffered
);
1763 int sta_info_move_state(struct sta_info
*sta
,
1764 enum ieee80211_sta_state new_state
)
1768 if (sta
->sta_state
== new_state
)
1771 /* check allowed transitions first */
1773 switch (new_state
) {
1774 case IEEE80211_STA_NONE
:
1775 if (sta
->sta_state
!= IEEE80211_STA_AUTH
)
1778 case IEEE80211_STA_AUTH
:
1779 if (sta
->sta_state
!= IEEE80211_STA_NONE
&&
1780 sta
->sta_state
!= IEEE80211_STA_ASSOC
)
1783 case IEEE80211_STA_ASSOC
:
1784 if (sta
->sta_state
!= IEEE80211_STA_AUTH
&&
1785 sta
->sta_state
!= IEEE80211_STA_AUTHORIZED
)
1788 case IEEE80211_STA_AUTHORIZED
:
1789 if (sta
->sta_state
!= IEEE80211_STA_ASSOC
)
1793 WARN(1, "invalid state %d", new_state
);
1797 sta_dbg(sta
->sdata
, "moving STA %pM to state %d\n",
1798 sta
->sta
.addr
, new_state
);
1801 * notify the driver before the actual changes so it can
1802 * fail the transition
1804 if (test_sta_flag(sta
, WLAN_STA_INSERTED
)) {
1805 int err
= drv_sta_state(sta
->local
, sta
->sdata
, sta
,
1806 sta
->sta_state
, new_state
);
1811 /* reflect the change in all state variables */
1813 switch (new_state
) {
1814 case IEEE80211_STA_NONE
:
1815 if (sta
->sta_state
== IEEE80211_STA_AUTH
)
1816 clear_bit(WLAN_STA_AUTH
, &sta
->_flags
);
1818 case IEEE80211_STA_AUTH
:
1819 if (sta
->sta_state
== IEEE80211_STA_NONE
) {
1820 set_bit(WLAN_STA_AUTH
, &sta
->_flags
);
1821 } else if (sta
->sta_state
== IEEE80211_STA_ASSOC
) {
1822 clear_bit(WLAN_STA_ASSOC
, &sta
->_flags
);
1823 ieee80211_recalc_min_chandef(sta
->sdata
);
1826 case IEEE80211_STA_ASSOC
:
1827 if (sta
->sta_state
== IEEE80211_STA_AUTH
) {
1828 set_bit(WLAN_STA_ASSOC
, &sta
->_flags
);
1829 ieee80211_recalc_min_chandef(sta
->sdata
);
1830 } else if (sta
->sta_state
== IEEE80211_STA_AUTHORIZED
) {
1831 if (sta
->sdata
->vif
.type
== NL80211_IFTYPE_AP
||
1832 (sta
->sdata
->vif
.type
== NL80211_IFTYPE_AP_VLAN
&&
1833 !sta
->sdata
->u
.vlan
.sta
))
1834 atomic_dec(&sta
->sdata
->bss
->num_mcast_sta
);
1835 clear_bit(WLAN_STA_AUTHORIZED
, &sta
->_flags
);
1836 ieee80211_clear_fast_xmit(sta
);
1839 case IEEE80211_STA_AUTHORIZED
:
1840 if (sta
->sta_state
== IEEE80211_STA_ASSOC
) {
1841 if (sta
->sdata
->vif
.type
== NL80211_IFTYPE_AP
||
1842 (sta
->sdata
->vif
.type
== NL80211_IFTYPE_AP_VLAN
&&
1843 !sta
->sdata
->u
.vlan
.sta
))
1844 atomic_inc(&sta
->sdata
->bss
->num_mcast_sta
);
1845 set_bit(WLAN_STA_AUTHORIZED
, &sta
->_flags
);
1846 ieee80211_check_fast_xmit(sta
);
1853 sta
->sta_state
= new_state
;
1858 u8
sta_info_tx_streams(struct sta_info
*sta
)
1860 struct ieee80211_sta_ht_cap
*ht_cap
= &sta
->sta
.ht_cap
;
1863 if (!sta
->sta
.ht_cap
.ht_supported
)
1866 if (sta
->sta
.vht_cap
.vht_supported
) {
1869 le16_to_cpu(sta
->sta
.vht_cap
.vht_mcs
.tx_mcs_map
);
1871 for (i
= 7; i
>= 0; i
--)
1872 if ((tx_mcs_map
& (0x3 << (i
* 2))) !=
1873 IEEE80211_VHT_MCS_NOT_SUPPORTED
)
1877 if (ht_cap
->mcs
.rx_mask
[3])
1879 else if (ht_cap
->mcs
.rx_mask
[2])
1881 else if (ht_cap
->mcs
.rx_mask
[1])
1886 if (!(ht_cap
->mcs
.tx_params
& IEEE80211_HT_MCS_TX_RX_DIFF
))
1889 return ((ht_cap
->mcs
.tx_params
& IEEE80211_HT_MCS_TX_MAX_STREAMS_MASK
)
1890 >> IEEE80211_HT_MCS_TX_MAX_STREAMS_SHIFT
) + 1;
1893 static void sta_set_rate_info_rx(struct sta_info
*sta
, struct rate_info
*rinfo
)
1897 if (sta
->rx_stats
.last_rate_flag
& RX_FLAG_HT
) {
1898 rinfo
->flags
|= RATE_INFO_FLAGS_MCS
;
1899 rinfo
->mcs
= sta
->rx_stats
.last_rate_idx
;
1900 } else if (sta
->rx_stats
.last_rate_flag
& RX_FLAG_VHT
) {
1901 rinfo
->flags
|= RATE_INFO_FLAGS_VHT_MCS
;
1902 rinfo
->nss
= sta
->rx_stats
.last_rate_vht_nss
;
1903 rinfo
->mcs
= sta
->rx_stats
.last_rate_idx
;
1905 struct ieee80211_supported_band
*sband
;
1906 int shift
= ieee80211_vif_get_shift(&sta
->sdata
->vif
);
1909 sband
= sta
->local
->hw
.wiphy
->bands
[
1910 ieee80211_get_sdata_band(sta
->sdata
)];
1911 brate
= sband
->bitrates
[sta
->rx_stats
.last_rate_idx
].bitrate
;
1912 rinfo
->legacy
= DIV_ROUND_UP(brate
, 1 << shift
);
1915 if (sta
->rx_stats
.last_rate_flag
& RX_FLAG_SHORT_GI
)
1916 rinfo
->flags
|= RATE_INFO_FLAGS_SHORT_GI
;
1918 if (sta
->rx_stats
.last_rate_flag
& RX_FLAG_5MHZ
)
1919 rinfo
->bw
= RATE_INFO_BW_5
;
1920 else if (sta
->rx_stats
.last_rate_flag
& RX_FLAG_10MHZ
)
1921 rinfo
->bw
= RATE_INFO_BW_10
;
1922 else if (sta
->rx_stats
.last_rate_flag
& RX_FLAG_40MHZ
)
1923 rinfo
->bw
= RATE_INFO_BW_40
;
1924 else if (sta
->rx_stats
.last_rate_vht_flag
& RX_VHT_FLAG_80MHZ
)
1925 rinfo
->bw
= RATE_INFO_BW_80
;
1926 else if (sta
->rx_stats
.last_rate_vht_flag
& RX_VHT_FLAG_160MHZ
)
1927 rinfo
->bw
= RATE_INFO_BW_160
;
1929 rinfo
->bw
= RATE_INFO_BW_20
;
1932 void sta_set_sinfo(struct sta_info
*sta
, struct station_info
*sinfo
)
1934 struct ieee80211_sub_if_data
*sdata
= sta
->sdata
;
1935 struct ieee80211_local
*local
= sdata
->local
;
1936 struct rate_control_ref
*ref
= NULL
;
1940 if (test_sta_flag(sta
, WLAN_STA_RATE_CONTROL
))
1941 ref
= local
->rate_ctrl
;
1943 sinfo
->generation
= sdata
->local
->sta_generation
;
1945 /* do before driver, so beacon filtering drivers have a
1946 * chance to e.g. just add the number of filtered beacons
1947 * (or just modify the value entirely, of course)
1949 if (sdata
->vif
.type
== NL80211_IFTYPE_STATION
)
1950 sinfo
->rx_beacon
= sdata
->u
.mgd
.count_beacon_signal
;
1952 drv_sta_statistics(local
, sdata
, &sta
->sta
, sinfo
);
1954 sinfo
->filled
|= BIT(NL80211_STA_INFO_INACTIVE_TIME
) |
1955 BIT(NL80211_STA_INFO_STA_FLAGS
) |
1956 BIT(NL80211_STA_INFO_BSS_PARAM
) |
1957 BIT(NL80211_STA_INFO_CONNECTED_TIME
) |
1958 BIT(NL80211_STA_INFO_RX_DROP_MISC
);
1960 if (sdata
->vif
.type
== NL80211_IFTYPE_STATION
) {
1961 sinfo
->beacon_loss_count
= sdata
->u
.mgd
.beacon_loss_count
;
1962 sinfo
->filled
|= BIT(NL80211_STA_INFO_BEACON_LOSS
);
1965 sinfo
->connected_time
= ktime_get_seconds() - sta
->last_connected
;
1966 sinfo
->inactive_time
=
1967 jiffies_to_msecs(jiffies
- sta
->rx_stats
.last_rx
);
1969 if (!(sinfo
->filled
& (BIT(NL80211_STA_INFO_TX_BYTES64
) |
1970 BIT(NL80211_STA_INFO_TX_BYTES
)))) {
1971 sinfo
->tx_bytes
= 0;
1972 for (ac
= 0; ac
< IEEE80211_NUM_ACS
; ac
++)
1973 sinfo
->tx_bytes
+= sta
->tx_stats
.bytes
[ac
];
1974 sinfo
->filled
|= BIT(NL80211_STA_INFO_TX_BYTES64
);
1977 if (!(sinfo
->filled
& BIT(NL80211_STA_INFO_TX_PACKETS
))) {
1978 sinfo
->tx_packets
= 0;
1979 for (ac
= 0; ac
< IEEE80211_NUM_ACS
; ac
++)
1980 sinfo
->tx_packets
+= sta
->tx_stats
.packets
[ac
];
1981 sinfo
->filled
|= BIT(NL80211_STA_INFO_TX_PACKETS
);
1984 if (!(sinfo
->filled
& (BIT(NL80211_STA_INFO_RX_BYTES64
) |
1985 BIT(NL80211_STA_INFO_RX_BYTES
)))) {
1986 sinfo
->rx_bytes
= sta
->rx_stats
.bytes
;
1987 sinfo
->filled
|= BIT(NL80211_STA_INFO_RX_BYTES64
);
1990 if (!(sinfo
->filled
& BIT(NL80211_STA_INFO_RX_PACKETS
))) {
1991 sinfo
->rx_packets
= sta
->rx_stats
.packets
;
1992 sinfo
->filled
|= BIT(NL80211_STA_INFO_RX_PACKETS
);
1995 if (!(sinfo
->filled
& BIT(NL80211_STA_INFO_TX_RETRIES
))) {
1996 sinfo
->tx_retries
= sta
->status_stats
.retry_count
;
1997 sinfo
->filled
|= BIT(NL80211_STA_INFO_TX_RETRIES
);
2000 if (!(sinfo
->filled
& BIT(NL80211_STA_INFO_TX_FAILED
))) {
2001 sinfo
->tx_failed
= sta
->status_stats
.retry_failed
;
2002 sinfo
->filled
|= BIT(NL80211_STA_INFO_TX_FAILED
);
2005 sinfo
->rx_dropped_misc
= sta
->rx_stats
.dropped
;
2007 if (sdata
->vif
.type
== NL80211_IFTYPE_STATION
&&
2008 !(sdata
->vif
.driver_flags
& IEEE80211_VIF_BEACON_FILTER
)) {
2009 sinfo
->filled
|= BIT(NL80211_STA_INFO_BEACON_RX
) |
2010 BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG
);
2011 sinfo
->rx_beacon_signal_avg
= ieee80211_ave_rssi(&sdata
->vif
);
2014 if (ieee80211_hw_check(&sta
->local
->hw
, SIGNAL_DBM
) ||
2015 ieee80211_hw_check(&sta
->local
->hw
, SIGNAL_UNSPEC
)) {
2016 if (!(sinfo
->filled
& BIT(NL80211_STA_INFO_SIGNAL
))) {
2017 sinfo
->signal
= (s8
)sta
->rx_stats
.last_signal
;
2018 sinfo
->filled
|= BIT(NL80211_STA_INFO_SIGNAL
);
2021 if (!(sinfo
->filled
& BIT(NL80211_STA_INFO_SIGNAL_AVG
))) {
2023 -ewma_signal_read(&sta
->rx_stats
.avg_signal
);
2024 sinfo
->filled
|= BIT(NL80211_STA_INFO_SIGNAL_AVG
);
2028 if (sta
->rx_stats
.chains
&&
2029 !(sinfo
->filled
& (BIT(NL80211_STA_INFO_CHAIN_SIGNAL
) |
2030 BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG
)))) {
2031 sinfo
->filled
|= BIT(NL80211_STA_INFO_CHAIN_SIGNAL
) |
2032 BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG
);
2034 sinfo
->chains
= sta
->rx_stats
.chains
;
2035 for (i
= 0; i
< ARRAY_SIZE(sinfo
->chain_signal
); i
++) {
2036 sinfo
->chain_signal
[i
] =
2037 sta
->rx_stats
.chain_signal_last
[i
];
2038 sinfo
->chain_signal_avg
[i
] =
2039 -ewma_signal_read(&sta
->rx_stats
.chain_signal_avg
[i
]);
2043 if (!(sinfo
->filled
& BIT(NL80211_STA_INFO_TX_BITRATE
))) {
2044 sta_set_rate_info_tx(sta
, &sta
->tx_stats
.last_rate
,
2046 sinfo
->filled
|= BIT(NL80211_STA_INFO_TX_BITRATE
);
2049 if (!(sinfo
->filled
& BIT(NL80211_STA_INFO_RX_BITRATE
))) {
2050 sta_set_rate_info_rx(sta
, &sinfo
->rxrate
);
2051 sinfo
->filled
|= BIT(NL80211_STA_INFO_RX_BITRATE
);
2054 sinfo
->filled
|= BIT(NL80211_STA_INFO_TID_STATS
);
2055 for (i
= 0; i
< IEEE80211_NUM_TIDS
+ 1; i
++) {
2056 struct cfg80211_tid_stats
*tidstats
= &sinfo
->pertid
[i
];
2058 if (!(tidstats
->filled
& BIT(NL80211_TID_STATS_RX_MSDU
))) {
2059 tidstats
->filled
|= BIT(NL80211_TID_STATS_RX_MSDU
);
2060 tidstats
->rx_msdu
= sta
->rx_stats
.msdu
[i
];
2063 if (!(tidstats
->filled
& BIT(NL80211_TID_STATS_TX_MSDU
))) {
2064 tidstats
->filled
|= BIT(NL80211_TID_STATS_TX_MSDU
);
2065 tidstats
->tx_msdu
= sta
->tx_stats
.msdu
[i
];
2068 if (!(tidstats
->filled
&
2069 BIT(NL80211_TID_STATS_TX_MSDU_RETRIES
)) &&
2070 ieee80211_hw_check(&local
->hw
, REPORTS_TX_ACK_STATUS
)) {
2072 BIT(NL80211_TID_STATS_TX_MSDU_RETRIES
);
2073 tidstats
->tx_msdu_retries
=
2074 sta
->status_stats
.msdu_retries
[i
];
2077 if (!(tidstats
->filled
&
2078 BIT(NL80211_TID_STATS_TX_MSDU_FAILED
)) &&
2079 ieee80211_hw_check(&local
->hw
, REPORTS_TX_ACK_STATUS
)) {
2081 BIT(NL80211_TID_STATS_TX_MSDU_FAILED
);
2082 tidstats
->tx_msdu_failed
=
2083 sta
->status_stats
.msdu_failed
[i
];
2087 if (ieee80211_vif_is_mesh(&sdata
->vif
)) {
2088 #ifdef CONFIG_MAC80211_MESH
2089 sinfo
->filled
|= BIT(NL80211_STA_INFO_LLID
) |
2090 BIT(NL80211_STA_INFO_PLID
) |
2091 BIT(NL80211_STA_INFO_PLINK_STATE
) |
2092 BIT(NL80211_STA_INFO_LOCAL_PM
) |
2093 BIT(NL80211_STA_INFO_PEER_PM
) |
2094 BIT(NL80211_STA_INFO_NONPEER_PM
);
2096 sinfo
->llid
= sta
->mesh
->llid
;
2097 sinfo
->plid
= sta
->mesh
->plid
;
2098 sinfo
->plink_state
= sta
->mesh
->plink_state
;
2099 if (test_sta_flag(sta
, WLAN_STA_TOFFSET_KNOWN
)) {
2100 sinfo
->filled
|= BIT(NL80211_STA_INFO_T_OFFSET
);
2101 sinfo
->t_offset
= sta
->mesh
->t_offset
;
2103 sinfo
->local_pm
= sta
->mesh
->local_pm
;
2104 sinfo
->peer_pm
= sta
->mesh
->peer_pm
;
2105 sinfo
->nonpeer_pm
= sta
->mesh
->nonpeer_pm
;
2109 sinfo
->bss_param
.flags
= 0;
2110 if (sdata
->vif
.bss_conf
.use_cts_prot
)
2111 sinfo
->bss_param
.flags
|= BSS_PARAM_FLAGS_CTS_PROT
;
2112 if (sdata
->vif
.bss_conf
.use_short_preamble
)
2113 sinfo
->bss_param
.flags
|= BSS_PARAM_FLAGS_SHORT_PREAMBLE
;
2114 if (sdata
->vif
.bss_conf
.use_short_slot
)
2115 sinfo
->bss_param
.flags
|= BSS_PARAM_FLAGS_SHORT_SLOT_TIME
;
2116 sinfo
->bss_param
.dtim_period
= sdata
->vif
.bss_conf
.dtim_period
;
2117 sinfo
->bss_param
.beacon_interval
= sdata
->vif
.bss_conf
.beacon_int
;
2119 sinfo
->sta_flags
.set
= 0;
2120 sinfo
->sta_flags
.mask
= BIT(NL80211_STA_FLAG_AUTHORIZED
) |
2121 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE
) |
2122 BIT(NL80211_STA_FLAG_WME
) |
2123 BIT(NL80211_STA_FLAG_MFP
) |
2124 BIT(NL80211_STA_FLAG_AUTHENTICATED
) |
2125 BIT(NL80211_STA_FLAG_ASSOCIATED
) |
2126 BIT(NL80211_STA_FLAG_TDLS_PEER
);
2127 if (test_sta_flag(sta
, WLAN_STA_AUTHORIZED
))
2128 sinfo
->sta_flags
.set
|= BIT(NL80211_STA_FLAG_AUTHORIZED
);
2129 if (test_sta_flag(sta
, WLAN_STA_SHORT_PREAMBLE
))
2130 sinfo
->sta_flags
.set
|= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE
);
2132 sinfo
->sta_flags
.set
|= BIT(NL80211_STA_FLAG_WME
);
2133 if (test_sta_flag(sta
, WLAN_STA_MFP
))
2134 sinfo
->sta_flags
.set
|= BIT(NL80211_STA_FLAG_MFP
);
2135 if (test_sta_flag(sta
, WLAN_STA_AUTH
))
2136 sinfo
->sta_flags
.set
|= BIT(NL80211_STA_FLAG_AUTHENTICATED
);
2137 if (test_sta_flag(sta
, WLAN_STA_ASSOC
))
2138 sinfo
->sta_flags
.set
|= BIT(NL80211_STA_FLAG_ASSOCIATED
);
2139 if (test_sta_flag(sta
, WLAN_STA_TDLS_PEER
))
2140 sinfo
->sta_flags
.set
|= BIT(NL80211_STA_FLAG_TDLS_PEER
);
2142 /* check if the driver has a SW RC implementation */
2143 if (ref
&& ref
->ops
->get_expected_throughput
)
2144 thr
= ref
->ops
->get_expected_throughput(sta
->rate_ctrl_priv
);
2146 thr
= drv_get_expected_throughput(local
, &sta
->sta
);
2149 sinfo
->filled
|= BIT(NL80211_STA_INFO_EXPECTED_THROUGHPUT
);
2150 sinfo
->expected_throughput
= thr
;