1 /******************************************************************************
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
8 * Copyright(c) 2012 - 2015 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of version 2 of the GNU General Public License as
13 * published by the Free Software Foundation.
15 * This program is distributed in the hope that it will be useful, but
16 * WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
25 * The full GNU General Public License is included in this distribution
26 * in the file called COPYING.
28 * Contact Information:
29 * Intel Linux Wireless <ilw@linux.intel.com>
30 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
34 * Copyright(c) 2012 - 2015 Intel Corporation. All rights reserved.
35 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
36 * All rights reserved.
38 * Redistribution and use in source and binary forms, with or without
39 * modification, are permitted provided that the following conditions
42 * * Redistributions of source code must retain the above copyright
43 * notice, this list of conditions and the following disclaimer.
44 * * Redistributions in binary form must reproduce the above copyright
45 * notice, this list of conditions and the following disclaimer in
46 * the documentation and/or other materials provided with the
48 * * Neither the name Intel Corporation nor the names of its
49 * contributors may be used to endorse or promote products derived
50 * from this software without specific prior written permission.
52 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
53 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
54 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
55 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
56 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
57 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
58 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
59 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
60 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
61 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
62 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
64 *****************************************************************************/
65 #include <net/mac80211.h>
71 static int iwl_mvm_find_free_sta_id(struct iwl_mvm
*mvm
,
72 enum nl80211_iftype iftype
)
77 BUILD_BUG_ON(IWL_MVM_STATION_COUNT
> 32);
78 WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART
, &mvm
->status
));
80 lockdep_assert_held(&mvm
->mutex
);
82 /* d0i3/d3 assumes the AP's sta_id (of sta vif) is 0. reserve it. */
83 if (iftype
!= NL80211_IFTYPE_STATION
)
84 reserved_ids
= BIT(0);
86 /* Don't take rcu_read_lock() since we are protected by mvm->mutex */
87 for (sta_id
= 0; sta_id
< IWL_MVM_STATION_COUNT
; sta_id
++) {
88 if (BIT(sta_id
) & reserved_ids
)
91 if (!rcu_dereference_protected(mvm
->fw_id_to_mac_id
[sta_id
],
92 lockdep_is_held(&mvm
->mutex
)))
95 return IWL_MVM_STATION_COUNT
;
98 /* send station add/update command to firmware */
99 int iwl_mvm_sta_send_to_fw(struct iwl_mvm
*mvm
, struct ieee80211_sta
*sta
,
102 struct iwl_mvm_sta
*mvm_sta
= iwl_mvm_sta_from_mac80211(sta
);
103 struct iwl_mvm_add_sta_cmd add_sta_cmd
= {
104 .sta_id
= mvm_sta
->sta_id
,
105 .mac_id_n_color
= cpu_to_le32(mvm_sta
->mac_id_n_color
),
106 .add_modify
= update
? 1 : 0,
107 .station_flags_msk
= cpu_to_le32(STA_FLG_FAT_EN_MSK
|
108 STA_FLG_MIMO_EN_MSK
),
112 u32 agg_size
= 0, mpdu_dens
= 0;
115 add_sta_cmd
.tfd_queue_msk
= cpu_to_le32(mvm_sta
->tfd_queue_msk
);
116 memcpy(&add_sta_cmd
.addr
, sta
->addr
, ETH_ALEN
);
119 switch (sta
->bandwidth
) {
120 case IEEE80211_STA_RX_BW_160
:
121 add_sta_cmd
.station_flags
|= cpu_to_le32(STA_FLG_FAT_EN_160MHZ
);
123 case IEEE80211_STA_RX_BW_80
:
124 add_sta_cmd
.station_flags
|= cpu_to_le32(STA_FLG_FAT_EN_80MHZ
);
126 case IEEE80211_STA_RX_BW_40
:
127 add_sta_cmd
.station_flags
|= cpu_to_le32(STA_FLG_FAT_EN_40MHZ
);
129 case IEEE80211_STA_RX_BW_20
:
130 if (sta
->ht_cap
.ht_supported
)
131 add_sta_cmd
.station_flags
|=
132 cpu_to_le32(STA_FLG_FAT_EN_20MHZ
);
136 switch (sta
->rx_nss
) {
138 add_sta_cmd
.station_flags
|= cpu_to_le32(STA_FLG_MIMO_EN_SISO
);
141 add_sta_cmd
.station_flags
|= cpu_to_le32(STA_FLG_MIMO_EN_MIMO2
);
144 add_sta_cmd
.station_flags
|= cpu_to_le32(STA_FLG_MIMO_EN_MIMO3
);
148 switch (sta
->smps_mode
) {
149 case IEEE80211_SMPS_AUTOMATIC
:
150 case IEEE80211_SMPS_NUM_MODES
:
153 case IEEE80211_SMPS_STATIC
:
155 add_sta_cmd
.station_flags
&= ~cpu_to_le32(STA_FLG_MIMO_EN_MSK
);
156 add_sta_cmd
.station_flags
|= cpu_to_le32(STA_FLG_MIMO_EN_SISO
);
158 case IEEE80211_SMPS_DYNAMIC
:
159 add_sta_cmd
.station_flags
|= cpu_to_le32(STA_FLG_RTS_MIMO_PROT
);
161 case IEEE80211_SMPS_OFF
:
166 if (sta
->ht_cap
.ht_supported
) {
167 add_sta_cmd
.station_flags_msk
|=
168 cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK
|
169 STA_FLG_AGG_MPDU_DENS_MSK
);
171 mpdu_dens
= sta
->ht_cap
.ampdu_density
;
174 if (sta
->vht_cap
.vht_supported
) {
175 agg_size
= sta
->vht_cap
.cap
&
176 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK
;
178 IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_SHIFT
;
179 } else if (sta
->ht_cap
.ht_supported
) {
180 agg_size
= sta
->ht_cap
.ampdu_factor
;
183 add_sta_cmd
.station_flags
|=
184 cpu_to_le32(agg_size
<< STA_FLG_MAX_AGG_SIZE_SHIFT
);
185 add_sta_cmd
.station_flags
|=
186 cpu_to_le32(mpdu_dens
<< STA_FLG_AGG_MPDU_DENS_SHIFT
);
188 status
= ADD_STA_SUCCESS
;
189 ret
= iwl_mvm_send_cmd_pdu_status(mvm
, ADD_STA
, sizeof(add_sta_cmd
),
190 &add_sta_cmd
, &status
);
195 case ADD_STA_SUCCESS
:
196 IWL_DEBUG_ASSOC(mvm
, "ADD_STA PASSED\n");
200 IWL_ERR(mvm
, "ADD_STA failed\n");
207 static int iwl_mvm_tdls_sta_init(struct iwl_mvm
*mvm
,
208 struct ieee80211_sta
*sta
)
210 unsigned long used_hw_queues
;
211 struct iwl_mvm_sta
*mvmsta
= iwl_mvm_sta_from_mac80211(sta
);
212 unsigned int wdg_timeout
=
213 iwl_mvm_get_wd_timeout(mvm
, NULL
, true, false);
216 lockdep_assert_held(&mvm
->mutex
);
218 used_hw_queues
= iwl_mvm_get_used_hw_queues(mvm
, NULL
);
220 /* Find available queues, and allocate them to the ACs */
221 for (ac
= 0; ac
< IEEE80211_NUM_ACS
; ac
++) {
222 u8 queue
= find_first_zero_bit(&used_hw_queues
,
223 mvm
->first_agg_queue
);
225 if (queue
>= mvm
->first_agg_queue
) {
226 IWL_ERR(mvm
, "Failed to allocate STA queue\n");
230 __set_bit(queue
, &used_hw_queues
);
231 mvmsta
->hw_queue
[ac
] = queue
;
234 /* Found a place for all queues - enable them */
235 for (ac
= 0; ac
< IEEE80211_NUM_ACS
; ac
++) {
236 iwl_mvm_enable_ac_txq(mvm
, mvmsta
->hw_queue
[ac
],
237 iwl_mvm_ac_to_tx_fifo
[ac
], wdg_timeout
);
238 mvmsta
->tfd_queue_msk
|= BIT(mvmsta
->hw_queue
[ac
]);
244 static void iwl_mvm_tdls_sta_deinit(struct iwl_mvm
*mvm
,
245 struct ieee80211_sta
*sta
)
247 struct iwl_mvm_sta
*mvmsta
= iwl_mvm_sta_from_mac80211(sta
);
248 unsigned long sta_msk
;
251 lockdep_assert_held(&mvm
->mutex
);
253 /* disable the TDLS STA-specific queues */
254 sta_msk
= mvmsta
->tfd_queue_msk
;
255 for_each_set_bit(i
, &sta_msk
, sizeof(sta_msk
) * BITS_PER_BYTE
)
256 iwl_mvm_disable_txq(mvm
, i
, 0);
259 int iwl_mvm_add_sta(struct iwl_mvm
*mvm
,
260 struct ieee80211_vif
*vif
,
261 struct ieee80211_sta
*sta
)
263 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
264 struct iwl_mvm_sta
*mvm_sta
= iwl_mvm_sta_from_mac80211(sta
);
267 lockdep_assert_held(&mvm
->mutex
);
269 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART
, &mvm
->status
))
270 sta_id
= iwl_mvm_find_free_sta_id(mvm
,
271 ieee80211_vif_type_p2p(vif
));
273 sta_id
= mvm_sta
->sta_id
;
275 if (sta_id
== IWL_MVM_STATION_COUNT
)
278 spin_lock_init(&mvm_sta
->lock
);
280 mvm_sta
->sta_id
= sta_id
;
281 mvm_sta
->mac_id_n_color
= FW_CMD_ID_AND_COLOR(mvmvif
->id
,
284 mvm_sta
->max_agg_bufsize
= LINK_QUAL_AGG_FRAME_LIMIT_DEF
;
285 mvm_sta
->tx_protection
= 0;
286 mvm_sta
->tt_tx_protection
= false;
288 /* HW restart, don't assume the memory has been zeroed */
289 atomic_set(&mvm
->pending_frames
[sta_id
], 0);
290 mvm_sta
->tid_disable_agg
= 0;
291 mvm_sta
->tfd_queue_msk
= 0;
293 /* allocate new queues for a TDLS station */
295 ret
= iwl_mvm_tdls_sta_init(mvm
, sta
);
299 for (i
= 0; i
< IEEE80211_NUM_ACS
; i
++)
300 if (vif
->hw_queue
[i
] != IEEE80211_INVAL_HW_QUEUE
)
301 mvm_sta
->tfd_queue_msk
|= BIT(vif
->hw_queue
[i
]);
304 /* for HW restart - reset everything but the sequence number */
305 for (i
= 0; i
< IWL_MAX_TID_COUNT
; i
++) {
306 u16 seq
= mvm_sta
->tid_data
[i
].seq_number
;
307 memset(&mvm_sta
->tid_data
[i
], 0, sizeof(mvm_sta
->tid_data
[i
]));
308 mvm_sta
->tid_data
[i
].seq_number
= seq
;
310 mvm_sta
->agg_tids
= 0;
312 ret
= iwl_mvm_sta_send_to_fw(mvm
, sta
, false);
316 if (vif
->type
== NL80211_IFTYPE_STATION
) {
318 WARN_ON(mvmvif
->ap_sta_id
!= IWL_MVM_STATION_COUNT
);
319 mvmvif
->ap_sta_id
= sta_id
;
321 WARN_ON(mvmvif
->ap_sta_id
== IWL_MVM_STATION_COUNT
);
325 rcu_assign_pointer(mvm
->fw_id_to_mac_id
[sta_id
], sta
);
330 iwl_mvm_tdls_sta_deinit(mvm
, sta
);
334 int iwl_mvm_update_sta(struct iwl_mvm
*mvm
,
335 struct ieee80211_vif
*vif
,
336 struct ieee80211_sta
*sta
)
338 return iwl_mvm_sta_send_to_fw(mvm
, sta
, true);
341 int iwl_mvm_drain_sta(struct iwl_mvm
*mvm
, struct iwl_mvm_sta
*mvmsta
,
344 struct iwl_mvm_add_sta_cmd cmd
= {};
348 lockdep_assert_held(&mvm
->mutex
);
350 cmd
.mac_id_n_color
= cpu_to_le32(mvmsta
->mac_id_n_color
);
351 cmd
.sta_id
= mvmsta
->sta_id
;
352 cmd
.add_modify
= STA_MODE_MODIFY
;
353 cmd
.station_flags
= drain
? cpu_to_le32(STA_FLG_DRAIN_FLOW
) : 0;
354 cmd
.station_flags_msk
= cpu_to_le32(STA_FLG_DRAIN_FLOW
);
356 status
= ADD_STA_SUCCESS
;
357 ret
= iwl_mvm_send_cmd_pdu_status(mvm
, ADD_STA
, sizeof(cmd
),
363 case ADD_STA_SUCCESS
:
364 IWL_DEBUG_INFO(mvm
, "Frames for staid %d will drained in fw\n",
369 IWL_ERR(mvm
, "Couldn't drain frames for staid %d\n",
378 * Remove a station from the FW table. Before sending the command to remove
379 * the station validate that the station is indeed known to the driver (sanity
382 static int iwl_mvm_rm_sta_common(struct iwl_mvm
*mvm
, u8 sta_id
)
384 struct ieee80211_sta
*sta
;
385 struct iwl_mvm_rm_sta_cmd rm_sta_cmd
= {
390 sta
= rcu_dereference_protected(mvm
->fw_id_to_mac_id
[sta_id
],
391 lockdep_is_held(&mvm
->mutex
));
393 /* Note: internal stations are marked as error values */
395 IWL_ERR(mvm
, "Invalid station id\n");
399 ret
= iwl_mvm_send_cmd_pdu(mvm
, REMOVE_STA
, 0,
400 sizeof(rm_sta_cmd
), &rm_sta_cmd
);
402 IWL_ERR(mvm
, "Failed to remove station. Id=%d\n", sta_id
);
409 void iwl_mvm_sta_drained_wk(struct work_struct
*wk
)
411 struct iwl_mvm
*mvm
= container_of(wk
, struct iwl_mvm
, sta_drained_wk
);
415 * The mutex is needed because of the SYNC cmd, but not only: if the
416 * work would run concurrently with iwl_mvm_rm_sta, it would run before
417 * iwl_mvm_rm_sta sets the station as busy, and exit. Then
418 * iwl_mvm_rm_sta would set the station as busy, and nobody will clean
421 mutex_lock(&mvm
->mutex
);
423 for_each_set_bit(sta_id
, mvm
->sta_drained
, IWL_MVM_STATION_COUNT
) {
425 struct ieee80211_sta
*sta
=
426 rcu_dereference_protected(mvm
->fw_id_to_mac_id
[sta_id
],
427 lockdep_is_held(&mvm
->mutex
));
430 * This station is in use or RCU-removed; the latter happens in
431 * managed mode, where mac80211 removes the station before we
432 * can remove it from firmware (we can only do that after the
433 * MAC is marked unassociated), and possibly while the deauth
434 * frame to disconnect from the AP is still queued. Then, the
435 * station pointer is -ENOENT when the last skb is reclaimed.
437 if (!IS_ERR(sta
) || PTR_ERR(sta
) == -ENOENT
)
440 if (PTR_ERR(sta
) == -EINVAL
) {
441 IWL_ERR(mvm
, "Drained sta %d, but it is internal?\n",
447 IWL_ERR(mvm
, "Drained sta %d, but it was NULL?\n",
452 WARN_ON(PTR_ERR(sta
) != -EBUSY
);
453 /* This station was removed and we waited until it got drained,
454 * we can now proceed and remove it.
456 ret
= iwl_mvm_rm_sta_common(mvm
, sta_id
);
459 "Couldn't remove sta %d after it was drained\n",
463 RCU_INIT_POINTER(mvm
->fw_id_to_mac_id
[sta_id
], NULL
);
464 clear_bit(sta_id
, mvm
->sta_drained
);
466 if (mvm
->tfd_drained
[sta_id
]) {
467 unsigned long i
, msk
= mvm
->tfd_drained
[sta_id
];
469 for_each_set_bit(i
, &msk
, sizeof(msk
) * BITS_PER_BYTE
)
470 iwl_mvm_disable_txq(mvm
, i
, 0);
472 mvm
->tfd_drained
[sta_id
] = 0;
473 IWL_DEBUG_TDLS(mvm
, "Drained sta %d, with queues %ld\n",
478 mutex_unlock(&mvm
->mutex
);
481 int iwl_mvm_rm_sta(struct iwl_mvm
*mvm
,
482 struct ieee80211_vif
*vif
,
483 struct ieee80211_sta
*sta
)
485 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
486 struct iwl_mvm_sta
*mvm_sta
= iwl_mvm_sta_from_mac80211(sta
);
489 lockdep_assert_held(&mvm
->mutex
);
491 if (vif
->type
== NL80211_IFTYPE_STATION
&&
492 mvmvif
->ap_sta_id
== mvm_sta
->sta_id
) {
493 ret
= iwl_mvm_drain_sta(mvm
, mvm_sta
, true);
496 /* flush its queues here since we are freeing mvm_sta */
497 ret
= iwl_mvm_flush_tx_path(mvm
, mvm_sta
->tfd_queue_msk
, true);
500 ret
= iwl_trans_wait_tx_queue_empty(mvm
->trans
,
501 mvm_sta
->tfd_queue_msk
);
504 ret
= iwl_mvm_drain_sta(mvm
, mvm_sta
, false);
506 /* if we are associated - we can't remove the AP STA now */
507 if (vif
->bss_conf
.assoc
)
510 /* unassoc - go ahead - remove the AP STA now */
511 mvmvif
->ap_sta_id
= IWL_MVM_STATION_COUNT
;
513 /* clear d0i3_ap_sta_id if no longer relevant */
514 if (mvm
->d0i3_ap_sta_id
== mvm_sta
->sta_id
)
515 mvm
->d0i3_ap_sta_id
= IWL_MVM_STATION_COUNT
;
519 * This shouldn't happen - the TDLS channel switch should be canceled
520 * before the STA is removed.
522 if (WARN_ON_ONCE(mvm
->tdls_cs
.peer
.sta_id
== mvm_sta
->sta_id
)) {
523 mvm
->tdls_cs
.peer
.sta_id
= IWL_MVM_STATION_COUNT
;
524 cancel_delayed_work(&mvm
->tdls_cs
.dwork
);
528 * Make sure that the tx response code sees the station as -EBUSY and
529 * calls the drain worker.
531 spin_lock_bh(&mvm_sta
->lock
);
533 * There are frames pending on the AC queues for this station.
534 * We need to wait until all the frames are drained...
536 if (atomic_read(&mvm
->pending_frames
[mvm_sta
->sta_id
])) {
537 rcu_assign_pointer(mvm
->fw_id_to_mac_id
[mvm_sta
->sta_id
],
539 spin_unlock_bh(&mvm_sta
->lock
);
541 /* disable TDLS sta queues on drain complete */
543 mvm
->tfd_drained
[mvm_sta
->sta_id
] =
544 mvm_sta
->tfd_queue_msk
;
545 IWL_DEBUG_TDLS(mvm
, "Draining TDLS sta %d\n",
549 ret
= iwl_mvm_drain_sta(mvm
, mvm_sta
, true);
551 spin_unlock_bh(&mvm_sta
->lock
);
554 iwl_mvm_tdls_sta_deinit(mvm
, sta
);
556 ret
= iwl_mvm_rm_sta_common(mvm
, mvm_sta
->sta_id
);
557 RCU_INIT_POINTER(mvm
->fw_id_to_mac_id
[mvm_sta
->sta_id
], NULL
);
563 int iwl_mvm_rm_sta_id(struct iwl_mvm
*mvm
,
564 struct ieee80211_vif
*vif
,
567 int ret
= iwl_mvm_rm_sta_common(mvm
, sta_id
);
569 lockdep_assert_held(&mvm
->mutex
);
571 RCU_INIT_POINTER(mvm
->fw_id_to_mac_id
[sta_id
], NULL
);
575 static int iwl_mvm_allocate_int_sta(struct iwl_mvm
*mvm
,
576 struct iwl_mvm_int_sta
*sta
,
577 u32 qmask
, enum nl80211_iftype iftype
)
579 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART
, &mvm
->status
)) {
580 sta
->sta_id
= iwl_mvm_find_free_sta_id(mvm
, iftype
);
581 if (WARN_ON_ONCE(sta
->sta_id
== IWL_MVM_STATION_COUNT
))
585 sta
->tfd_queue_msk
= qmask
;
587 /* put a non-NULL value so iterating over the stations won't stop */
588 rcu_assign_pointer(mvm
->fw_id_to_mac_id
[sta
->sta_id
], ERR_PTR(-EINVAL
));
592 static void iwl_mvm_dealloc_int_sta(struct iwl_mvm
*mvm
,
593 struct iwl_mvm_int_sta
*sta
)
595 RCU_INIT_POINTER(mvm
->fw_id_to_mac_id
[sta
->sta_id
], NULL
);
596 memset(sta
, 0, sizeof(struct iwl_mvm_int_sta
));
597 sta
->sta_id
= IWL_MVM_STATION_COUNT
;
600 static int iwl_mvm_add_int_sta_common(struct iwl_mvm
*mvm
,
601 struct iwl_mvm_int_sta
*sta
,
603 u16 mac_id
, u16 color
)
605 struct iwl_mvm_add_sta_cmd cmd
;
609 lockdep_assert_held(&mvm
->mutex
);
611 memset(&cmd
, 0, sizeof(cmd
));
612 cmd
.sta_id
= sta
->sta_id
;
613 cmd
.mac_id_n_color
= cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id
,
616 cmd
.tfd_queue_msk
= cpu_to_le32(sta
->tfd_queue_msk
);
619 memcpy(cmd
.addr
, addr
, ETH_ALEN
);
621 ret
= iwl_mvm_send_cmd_pdu_status(mvm
, ADD_STA
, sizeof(cmd
),
627 case ADD_STA_SUCCESS
:
628 IWL_DEBUG_INFO(mvm
, "Internal station added.\n");
632 IWL_ERR(mvm
, "Add internal station failed, status=0x%x\n",
639 int iwl_mvm_add_aux_sta(struct iwl_mvm
*mvm
)
641 unsigned int wdg_timeout
= iwlmvm_mod_params
.tfd_q_hang_detect
?
642 mvm
->cfg
->base_params
->wd_timeout
:
643 IWL_WATCHDOG_DISABLED
;
646 lockdep_assert_held(&mvm
->mutex
);
648 /* Map Aux queue to fifo - needs to happen before adding Aux station */
649 iwl_mvm_enable_ac_txq(mvm
, mvm
->aux_queue
,
650 IWL_MVM_TX_FIFO_MCAST
, wdg_timeout
);
652 /* Allocate aux station and assign to it the aux queue */
653 ret
= iwl_mvm_allocate_int_sta(mvm
, &mvm
->aux_sta
, BIT(mvm
->aux_queue
),
654 NL80211_IFTYPE_UNSPECIFIED
);
658 ret
= iwl_mvm_add_int_sta_common(mvm
, &mvm
->aux_sta
, NULL
,
662 iwl_mvm_dealloc_int_sta(mvm
, &mvm
->aux_sta
);
666 void iwl_mvm_del_aux_sta(struct iwl_mvm
*mvm
)
668 lockdep_assert_held(&mvm
->mutex
);
670 iwl_mvm_dealloc_int_sta(mvm
, &mvm
->aux_sta
);
674 * Send the add station command for the vif's broadcast station.
675 * Assumes that the station was already allocated.
677 * @mvm: the mvm component
678 * @vif: the interface to which the broadcast station is added
679 * @bsta: the broadcast station to add.
681 int iwl_mvm_send_add_bcast_sta(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
)
683 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
684 struct iwl_mvm_int_sta
*bsta
= &mvmvif
->bcast_sta
;
685 static const u8 _baddr
[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
686 const u8
*baddr
= _baddr
;
688 lockdep_assert_held(&mvm
->mutex
);
690 if (vif
->type
== NL80211_IFTYPE_ADHOC
)
691 baddr
= vif
->bss_conf
.bssid
;
693 if (WARN_ON_ONCE(bsta
->sta_id
== IWL_MVM_STATION_COUNT
))
696 return iwl_mvm_add_int_sta_common(mvm
, bsta
, baddr
,
697 mvmvif
->id
, mvmvif
->color
);
700 /* Send the FW a request to remove the station from it's internal data
701 * structures, but DO NOT remove the entry from the local data structures. */
702 int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
)
704 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
707 lockdep_assert_held(&mvm
->mutex
);
709 ret
= iwl_mvm_rm_sta_common(mvm
, mvmvif
->bcast_sta
.sta_id
);
711 IWL_WARN(mvm
, "Failed sending remove station\n");
715 int iwl_mvm_alloc_bcast_sta(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
)
717 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
720 lockdep_assert_held(&mvm
->mutex
);
722 qmask
= iwl_mvm_mac_get_queues_mask(vif
);
725 * The firmware defines the TFD queue mask to only be relevant
726 * for *unicast* queues, so the multicast (CAB) queue shouldn't
729 if (vif
->type
== NL80211_IFTYPE_AP
)
730 qmask
&= ~BIT(vif
->cab_queue
);
732 return iwl_mvm_allocate_int_sta(mvm
, &mvmvif
->bcast_sta
, qmask
,
733 ieee80211_vif_type_p2p(vif
));
736 /* Allocate a new station entry for the broadcast station to the given vif,
737 * and send it to the FW.
738 * Note that each P2P mac should have its own broadcast station.
740 * @mvm: the mvm component
741 * @vif: the interface to which the broadcast station is added
742 * @bsta: the broadcast station to add. */
743 int iwl_mvm_add_bcast_sta(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
)
745 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
746 struct iwl_mvm_int_sta
*bsta
= &mvmvif
->bcast_sta
;
749 lockdep_assert_held(&mvm
->mutex
);
751 ret
= iwl_mvm_alloc_bcast_sta(mvm
, vif
);
755 ret
= iwl_mvm_send_add_bcast_sta(mvm
, vif
);
758 iwl_mvm_dealloc_int_sta(mvm
, bsta
);
763 void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
)
765 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
767 iwl_mvm_dealloc_int_sta(mvm
, &mvmvif
->bcast_sta
);
771 * Send the FW a request to remove the station from it's internal data
772 * structures, and in addition remove it from the local data structure.
774 int iwl_mvm_rm_bcast_sta(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
)
778 lockdep_assert_held(&mvm
->mutex
);
780 ret
= iwl_mvm_send_rm_bcast_sta(mvm
, vif
);
782 iwl_mvm_dealloc_bcast_sta(mvm
, vif
);
787 #define IWL_MAX_RX_BA_SESSIONS 16
789 int iwl_mvm_sta_rx_agg(struct iwl_mvm
*mvm
, struct ieee80211_sta
*sta
,
790 int tid
, u16 ssn
, bool start
)
792 struct iwl_mvm_sta
*mvm_sta
= iwl_mvm_sta_from_mac80211(sta
);
793 struct iwl_mvm_add_sta_cmd cmd
= {};
797 lockdep_assert_held(&mvm
->mutex
);
799 if (start
&& mvm
->rx_ba_sessions
>= IWL_MAX_RX_BA_SESSIONS
) {
800 IWL_WARN(mvm
, "Not enough RX BA SESSIONS\n");
804 cmd
.mac_id_n_color
= cpu_to_le32(mvm_sta
->mac_id_n_color
);
805 cmd
.sta_id
= mvm_sta
->sta_id
;
806 cmd
.add_modify
= STA_MODE_MODIFY
;
808 cmd
.add_immediate_ba_tid
= (u8
) tid
;
809 cmd
.add_immediate_ba_ssn
= cpu_to_le16(ssn
);
811 cmd
.remove_immediate_ba_tid
= (u8
) tid
;
813 cmd
.modify_mask
= start
? STA_MODIFY_ADD_BA_TID
:
814 STA_MODIFY_REMOVE_BA_TID
;
816 status
= ADD_STA_SUCCESS
;
817 ret
= iwl_mvm_send_cmd_pdu_status(mvm
, ADD_STA
, sizeof(cmd
),
823 case ADD_STA_SUCCESS
:
824 IWL_DEBUG_INFO(mvm
, "RX BA Session %sed in fw\n",
825 start
? "start" : "stopp");
827 case ADD_STA_IMMEDIATE_BA_FAILURE
:
828 IWL_WARN(mvm
, "RX BA Session refused by fw\n");
833 IWL_ERR(mvm
, "RX BA Session failed %sing, status 0x%x\n",
834 start
? "start" : "stopp", status
);
840 mvm
->rx_ba_sessions
++;
841 else if (mvm
->rx_ba_sessions
> 0)
842 /* check that restart flow didn't zero the counter */
843 mvm
->rx_ba_sessions
--;
849 static int iwl_mvm_sta_tx_agg(struct iwl_mvm
*mvm
, struct ieee80211_sta
*sta
,
850 int tid
, u8 queue
, bool start
)
852 struct iwl_mvm_sta
*mvm_sta
= iwl_mvm_sta_from_mac80211(sta
);
853 struct iwl_mvm_add_sta_cmd cmd
= {};
857 lockdep_assert_held(&mvm
->mutex
);
860 mvm_sta
->tfd_queue_msk
|= BIT(queue
);
861 mvm_sta
->tid_disable_agg
&= ~BIT(tid
);
863 mvm_sta
->tfd_queue_msk
&= ~BIT(queue
);
864 mvm_sta
->tid_disable_agg
|= BIT(tid
);
867 cmd
.mac_id_n_color
= cpu_to_le32(mvm_sta
->mac_id_n_color
);
868 cmd
.sta_id
= mvm_sta
->sta_id
;
869 cmd
.add_modify
= STA_MODE_MODIFY
;
870 cmd
.modify_mask
= STA_MODIFY_QUEUES
| STA_MODIFY_TID_DISABLE_TX
;
871 cmd
.tfd_queue_msk
= cpu_to_le32(mvm_sta
->tfd_queue_msk
);
872 cmd
.tid_disable_tx
= cpu_to_le16(mvm_sta
->tid_disable_agg
);
874 status
= ADD_STA_SUCCESS
;
875 ret
= iwl_mvm_send_cmd_pdu_status(mvm
, ADD_STA
, sizeof(cmd
),
881 case ADD_STA_SUCCESS
:
885 IWL_ERR(mvm
, "TX BA Session failed %sing, status 0x%x\n",
886 start
? "start" : "stopp", status
);
893 const u8 tid_to_mac80211_ac
[] = {
904 static const u8 tid_to_ucode_ac
[] = {
915 int iwl_mvm_sta_tx_agg_start(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
,
916 struct ieee80211_sta
*sta
, u16 tid
, u16
*ssn
)
918 struct iwl_mvm_sta
*mvmsta
= iwl_mvm_sta_from_mac80211(sta
);
919 struct iwl_mvm_tid_data
*tid_data
;
922 if (WARN_ON_ONCE(tid
>= IWL_MAX_TID_COUNT
))
925 if (mvmsta
->tid_data
[tid
].state
!= IWL_AGG_OFF
) {
926 IWL_ERR(mvm
, "Start AGG when state is not IWL_AGG_OFF %d!\n",
927 mvmsta
->tid_data
[tid
].state
);
931 lockdep_assert_held(&mvm
->mutex
);
933 for (txq_id
= mvm
->first_agg_queue
;
934 txq_id
<= mvm
->last_agg_queue
; txq_id
++)
935 if (mvm
->queue_to_mac80211
[txq_id
] ==
936 IWL_INVALID_MAC80211_QUEUE
)
939 if (txq_id
> mvm
->last_agg_queue
) {
940 IWL_ERR(mvm
, "Failed to allocate agg queue\n");
944 spin_lock_bh(&mvmsta
->lock
);
946 /* possible race condition - we entered D0i3 while starting agg */
947 if (test_bit(IWL_MVM_STATUS_IN_D0I3
, &mvm
->status
)) {
948 spin_unlock_bh(&mvmsta
->lock
);
949 IWL_ERR(mvm
, "Entered D0i3 while starting Tx agg\n");
953 /* the new tx queue is still connected to the same mac80211 queue */
954 mvm
->queue_to_mac80211
[txq_id
] = vif
->hw_queue
[tid_to_mac80211_ac
[tid
]];
956 tid_data
= &mvmsta
->tid_data
[tid
];
957 tid_data
->ssn
= IEEE80211_SEQ_TO_SN(tid_data
->seq_number
);
958 tid_data
->txq_id
= txq_id
;
959 *ssn
= tid_data
->ssn
;
961 IWL_DEBUG_TX_QUEUES(mvm
,
962 "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n",
963 mvmsta
->sta_id
, tid
, txq_id
, tid_data
->ssn
,
964 tid_data
->next_reclaimed
);
966 if (tid_data
->ssn
== tid_data
->next_reclaimed
) {
967 tid_data
->state
= IWL_AGG_STARTING
;
968 ieee80211_start_tx_ba_cb_irqsafe(vif
, sta
->addr
, tid
);
970 tid_data
->state
= IWL_EMPTYING_HW_QUEUE_ADDBA
;
973 spin_unlock_bh(&mvmsta
->lock
);
978 int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
,
979 struct ieee80211_sta
*sta
, u16 tid
, u8 buf_size
)
981 struct iwl_mvm_sta
*mvmsta
= iwl_mvm_sta_from_mac80211(sta
);
982 struct iwl_mvm_tid_data
*tid_data
= &mvmsta
->tid_data
[tid
];
983 unsigned int wdg_timeout
=
984 iwl_mvm_get_wd_timeout(mvm
, vif
, sta
->tdls
, false);
985 int queue
, fifo
, ret
;
988 BUILD_BUG_ON((sizeof(mvmsta
->agg_tids
) * BITS_PER_BYTE
)
989 != IWL_MAX_TID_COUNT
);
991 buf_size
= min_t(int, buf_size
, LINK_QUAL_AGG_FRAME_LIMIT_DEF
);
993 spin_lock_bh(&mvmsta
->lock
);
995 queue
= tid_data
->txq_id
;
996 tid_data
->state
= IWL_AGG_ON
;
997 mvmsta
->agg_tids
|= BIT(tid
);
998 tid_data
->ssn
= 0xffff;
999 spin_unlock_bh(&mvmsta
->lock
);
1001 fifo
= iwl_mvm_ac_to_tx_fifo
[tid_to_mac80211_ac
[tid
]];
1003 iwl_mvm_enable_agg_txq(mvm
, queue
, fifo
, mvmsta
->sta_id
, tid
,
1004 buf_size
, ssn
, wdg_timeout
);
1006 ret
= iwl_mvm_sta_tx_agg(mvm
, sta
, tid
, queue
, true);
1011 * Even though in theory the peer could have different
1012 * aggregation reorder buffer sizes for different sessions,
1013 * our ucode doesn't allow for that and has a global limit
1014 * for each station. Therefore, use the minimum of all the
1015 * aggregation sessions and our default value.
1017 mvmsta
->max_agg_bufsize
=
1018 min(mvmsta
->max_agg_bufsize
, buf_size
);
1019 mvmsta
->lq_sta
.lq
.agg_frame_cnt_limit
= mvmsta
->max_agg_bufsize
;
1021 IWL_DEBUG_HT(mvm
, "Tx aggregation enabled on ra = %pM tid = %d\n",
1024 return iwl_mvm_send_lq_cmd(mvm
, &mvmsta
->lq_sta
.lq
, false);
1027 int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
,
1028 struct ieee80211_sta
*sta
, u16 tid
)
1030 struct iwl_mvm_sta
*mvmsta
= iwl_mvm_sta_from_mac80211(sta
);
1031 struct iwl_mvm_tid_data
*tid_data
= &mvmsta
->tid_data
[tid
];
1037 * If mac80211 is cleaning its state, then say that we finished since
1038 * our state has been cleared anyway.
1040 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART
, &mvm
->status
)) {
1041 ieee80211_stop_tx_ba_cb_irqsafe(vif
, sta
->addr
, tid
);
1045 spin_lock_bh(&mvmsta
->lock
);
1047 txq_id
= tid_data
->txq_id
;
1049 IWL_DEBUG_TX_QUEUES(mvm
, "Stop AGG: sta %d tid %d q %d state %d\n",
1050 mvmsta
->sta_id
, tid
, txq_id
, tid_data
->state
);
1052 mvmsta
->agg_tids
&= ~BIT(tid
);
1054 switch (tid_data
->state
) {
1056 tid_data
->ssn
= IEEE80211_SEQ_TO_SN(tid_data
->seq_number
);
1058 IWL_DEBUG_TX_QUEUES(mvm
,
1059 "ssn = %d, next_recl = %d\n",
1060 tid_data
->ssn
, tid_data
->next_reclaimed
);
1062 /* There are still packets for this RA / TID in the HW */
1063 if (tid_data
->ssn
!= tid_data
->next_reclaimed
) {
1064 tid_data
->state
= IWL_EMPTYING_HW_QUEUE_DELBA
;
1069 tid_data
->ssn
= 0xffff;
1070 tid_data
->state
= IWL_AGG_OFF
;
1071 mvm
->queue_to_mac80211
[txq_id
] = IWL_INVALID_MAC80211_QUEUE
;
1072 spin_unlock_bh(&mvmsta
->lock
);
1074 ieee80211_stop_tx_ba_cb_irqsafe(vif
, sta
->addr
, tid
);
1076 iwl_mvm_sta_tx_agg(mvm
, sta
, tid
, txq_id
, false);
1078 iwl_mvm_disable_txq(mvm
, txq_id
, 0);
1080 case IWL_AGG_STARTING
:
1081 case IWL_EMPTYING_HW_QUEUE_ADDBA
:
1083 * The agg session has been stopped before it was set up. This
1084 * can happen when the AddBA timer times out for example.
1087 /* No barriers since we are under mutex */
1088 lockdep_assert_held(&mvm
->mutex
);
1089 mvm
->queue_to_mac80211
[txq_id
] = IWL_INVALID_MAC80211_QUEUE
;
1091 ieee80211_stop_tx_ba_cb_irqsafe(vif
, sta
->addr
, tid
);
1092 tid_data
->state
= IWL_AGG_OFF
;
1097 "Stopping AGG while state not ON or starting for %d on %d (%d)\n",
1098 mvmsta
->sta_id
, tid
, tid_data
->state
);
1100 "\ttid_data->txq_id = %d\n", tid_data
->txq_id
);
1104 spin_unlock_bh(&mvmsta
->lock
);
1109 int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
,
1110 struct ieee80211_sta
*sta
, u16 tid
)
1112 struct iwl_mvm_sta
*mvmsta
= iwl_mvm_sta_from_mac80211(sta
);
1113 struct iwl_mvm_tid_data
*tid_data
= &mvmsta
->tid_data
[tid
];
1115 enum iwl_mvm_agg_state old_state
;
1118 * First set the agg state to OFF to avoid calling
1119 * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty.
1121 spin_lock_bh(&mvmsta
->lock
);
1122 txq_id
= tid_data
->txq_id
;
1123 IWL_DEBUG_TX_QUEUES(mvm
, "Flush AGG: sta %d tid %d q %d state %d\n",
1124 mvmsta
->sta_id
, tid
, txq_id
, tid_data
->state
);
1125 old_state
= tid_data
->state
;
1126 tid_data
->state
= IWL_AGG_OFF
;
1127 mvmsta
->agg_tids
&= ~BIT(tid
);
1128 spin_unlock_bh(&mvmsta
->lock
);
1130 if (old_state
>= IWL_AGG_ON
) {
1131 iwl_mvm_drain_sta(mvm
, mvmsta
, true);
1132 if (iwl_mvm_flush_tx_path(mvm
, BIT(txq_id
), true))
1133 IWL_ERR(mvm
, "Couldn't flush the AGG queue\n");
1134 iwl_trans_wait_tx_queue_empty(mvm
->trans
,
1135 mvmsta
->tfd_queue_msk
);
1136 iwl_mvm_drain_sta(mvm
, mvmsta
, false);
1138 iwl_mvm_sta_tx_agg(mvm
, sta
, tid
, txq_id
, false);
1140 iwl_mvm_disable_txq(mvm
, tid_data
->txq_id
, 0);
1143 mvm
->queue_to_mac80211
[tid_data
->txq_id
] =
1144 IWL_INVALID_MAC80211_QUEUE
;
1149 static int iwl_mvm_set_fw_key_idx(struct iwl_mvm
*mvm
)
1153 lockdep_assert_held(&mvm
->mutex
);
1155 i
= find_first_zero_bit(mvm
->fw_key_table
, STA_KEY_MAX_NUM
);
1157 if (i
== STA_KEY_MAX_NUM
)
1158 return STA_KEY_IDX_INVALID
;
1160 __set_bit(i
, mvm
->fw_key_table
);
1165 static u8
iwl_mvm_get_key_sta_id(struct ieee80211_vif
*vif
,
1166 struct ieee80211_sta
*sta
)
1168 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
1171 struct iwl_mvm_sta
*mvm_sta
= iwl_mvm_sta_from_mac80211(sta
);
1173 return mvm_sta
->sta_id
;
1177 * The device expects GTKs for station interfaces to be
1178 * installed as GTKs for the AP station. If we have no
1179 * station ID, then use AP's station ID.
1181 if (vif
->type
== NL80211_IFTYPE_STATION
&&
1182 mvmvif
->ap_sta_id
!= IWL_MVM_STATION_COUNT
)
1183 return mvmvif
->ap_sta_id
;
1185 return IWL_MVM_STATION_COUNT
;
1188 static int iwl_mvm_send_sta_key(struct iwl_mvm
*mvm
,
1189 struct iwl_mvm_sta
*mvm_sta
,
1190 struct ieee80211_key_conf
*keyconf
, bool mcast
,
1191 u32 tkip_iv32
, u16
*tkip_p1k
, u32 cmd_flags
)
1193 struct iwl_mvm_add_sta_key_cmd cmd
= {};
1199 u8 sta_id
= mvm_sta
->sta_id
;
1201 keyidx
= (keyconf
->keyidx
<< STA_KEY_FLG_KEYID_POS
) &
1202 STA_KEY_FLG_KEYID_MSK
;
1203 key_flags
= cpu_to_le16(keyidx
);
1204 key_flags
|= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP
);
1206 switch (keyconf
->cipher
) {
1207 case WLAN_CIPHER_SUITE_TKIP
:
1208 key_flags
|= cpu_to_le16(STA_KEY_FLG_TKIP
);
1209 cmd
.tkip_rx_tsc_byte2
= tkip_iv32
;
1210 for (i
= 0; i
< 5; i
++)
1211 cmd
.tkip_rx_ttak
[i
] = cpu_to_le16(tkip_p1k
[i
]);
1212 memcpy(cmd
.key
, keyconf
->key
, keyconf
->keylen
);
1214 case WLAN_CIPHER_SUITE_CCMP
:
1215 key_flags
|= cpu_to_le16(STA_KEY_FLG_CCM
);
1216 memcpy(cmd
.key
, keyconf
->key
, keyconf
->keylen
);
1218 case WLAN_CIPHER_SUITE_WEP104
:
1219 key_flags
|= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES
);
1221 case WLAN_CIPHER_SUITE_WEP40
:
1222 key_flags
|= cpu_to_le16(STA_KEY_FLG_WEP
);
1223 memcpy(cmd
.key
+ 3, keyconf
->key
, keyconf
->keylen
);
1226 key_flags
|= cpu_to_le16(STA_KEY_FLG_EXT
);
1227 memcpy(cmd
.key
, keyconf
->key
, keyconf
->keylen
);
1231 key_flags
|= cpu_to_le16(STA_KEY_MULTICAST
);
1233 cmd
.key_offset
= keyconf
->hw_key_idx
;
1234 cmd
.key_flags
= key_flags
;
1235 cmd
.sta_id
= sta_id
;
1237 status
= ADD_STA_SUCCESS
;
1238 if (cmd_flags
& CMD_ASYNC
)
1239 ret
= iwl_mvm_send_cmd_pdu(mvm
, ADD_STA_KEY
, CMD_ASYNC
,
1242 ret
= iwl_mvm_send_cmd_pdu_status(mvm
, ADD_STA_KEY
, sizeof(cmd
),
1246 case ADD_STA_SUCCESS
:
1247 IWL_DEBUG_WEP(mvm
, "MODIFY_STA: set dynamic key passed\n");
1251 IWL_ERR(mvm
, "MODIFY_STA: set dynamic key failed\n");
1258 static int iwl_mvm_send_sta_igtk(struct iwl_mvm
*mvm
,
1259 struct ieee80211_key_conf
*keyconf
,
1260 u8 sta_id
, bool remove_key
)
1262 struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd
= {};
1264 /* verify the key details match the required command's expectations */
1265 if (WARN_ON((keyconf
->cipher
!= WLAN_CIPHER_SUITE_AES_CMAC
) ||
1266 (keyconf
->flags
& IEEE80211_KEY_FLAG_PAIRWISE
) ||
1267 (keyconf
->keyidx
!= 4 && keyconf
->keyidx
!= 5)))
1270 igtk_cmd
.key_id
= cpu_to_le32(keyconf
->keyidx
);
1271 igtk_cmd
.sta_id
= cpu_to_le32(sta_id
);
1274 igtk_cmd
.ctrl_flags
|= cpu_to_le32(STA_KEY_NOT_VALID
);
1276 struct ieee80211_key_seq seq
;
1279 memcpy(igtk_cmd
.IGTK
, keyconf
->key
, keyconf
->keylen
);
1280 ieee80211_aes_cmac_calculate_k1_k2(keyconf
,
1281 igtk_cmd
.K1
, igtk_cmd
.K2
);
1282 ieee80211_get_key_rx_seq(keyconf
, 0, &seq
);
1283 pn
= seq
.aes_cmac
.pn
;
1284 igtk_cmd
.receive_seq_cnt
= cpu_to_le64(((u64
) pn
[5] << 0) |
1285 ((u64
) pn
[4] << 8) |
1286 ((u64
) pn
[3] << 16) |
1287 ((u64
) pn
[2] << 24) |
1288 ((u64
) pn
[1] << 32) |
1289 ((u64
) pn
[0] << 40));
1292 IWL_DEBUG_INFO(mvm
, "%s igtk for sta %u\n",
1293 remove_key
? "removing" : "installing",
1296 return iwl_mvm_send_cmd_pdu(mvm
, MGMT_MCAST_KEY
, 0,
1297 sizeof(igtk_cmd
), &igtk_cmd
);
1301 static inline u8
*iwl_mvm_get_mac_addr(struct iwl_mvm
*mvm
,
1302 struct ieee80211_vif
*vif
,
1303 struct ieee80211_sta
*sta
)
1305 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
1310 if (vif
->type
== NL80211_IFTYPE_STATION
&&
1311 mvmvif
->ap_sta_id
!= IWL_MVM_STATION_COUNT
) {
1312 u8 sta_id
= mvmvif
->ap_sta_id
;
1313 sta
= rcu_dereference_protected(mvm
->fw_id_to_mac_id
[sta_id
],
1314 lockdep_is_held(&mvm
->mutex
));
1322 static int __iwl_mvm_set_sta_key(struct iwl_mvm
*mvm
,
1323 struct ieee80211_vif
*vif
,
1324 struct ieee80211_sta
*sta
,
1325 struct ieee80211_key_conf
*keyconf
,
1328 struct iwl_mvm_sta
*mvm_sta
= iwl_mvm_sta_from_mac80211(sta
);
1331 struct ieee80211_key_seq seq
;
1334 switch (keyconf
->cipher
) {
1335 case WLAN_CIPHER_SUITE_TKIP
:
1336 addr
= iwl_mvm_get_mac_addr(mvm
, vif
, sta
);
1337 /* get phase 1 key from mac80211 */
1338 ieee80211_get_key_rx_seq(keyconf
, 0, &seq
);
1339 ieee80211_get_tkip_rx_p1k(keyconf
, addr
, seq
.tkip
.iv32
, p1k
);
1340 ret
= iwl_mvm_send_sta_key(mvm
, mvm_sta
, keyconf
, mcast
,
1341 seq
.tkip
.iv32
, p1k
, 0);
1343 case WLAN_CIPHER_SUITE_CCMP
:
1344 case WLAN_CIPHER_SUITE_WEP40
:
1345 case WLAN_CIPHER_SUITE_WEP104
:
1346 ret
= iwl_mvm_send_sta_key(mvm
, mvm_sta
, keyconf
, mcast
,
1350 ret
= iwl_mvm_send_sta_key(mvm
, mvm_sta
, keyconf
, mcast
,
1357 static int __iwl_mvm_remove_sta_key(struct iwl_mvm
*mvm
, u8 sta_id
,
1358 struct ieee80211_key_conf
*keyconf
,
1361 struct iwl_mvm_add_sta_key_cmd cmd
= {};
1366 key_flags
= cpu_to_le16((keyconf
->keyidx
<< STA_KEY_FLG_KEYID_POS
) &
1367 STA_KEY_FLG_KEYID_MSK
);
1368 key_flags
|= cpu_to_le16(STA_KEY_FLG_NO_ENC
| STA_KEY_FLG_WEP_KEY_MAP
);
1369 key_flags
|= cpu_to_le16(STA_KEY_NOT_VALID
);
1372 key_flags
|= cpu_to_le16(STA_KEY_MULTICAST
);
1374 cmd
.key_flags
= key_flags
;
1375 cmd
.key_offset
= keyconf
->hw_key_idx
;
1376 cmd
.sta_id
= sta_id
;
1378 status
= ADD_STA_SUCCESS
;
1379 ret
= iwl_mvm_send_cmd_pdu_status(mvm
, ADD_STA_KEY
, sizeof(cmd
),
1383 case ADD_STA_SUCCESS
:
1384 IWL_DEBUG_WEP(mvm
, "MODIFY_STA: remove sta key passed\n");
1388 IWL_ERR(mvm
, "MODIFY_STA: remove sta key failed\n");
1395 int iwl_mvm_set_sta_key(struct iwl_mvm
*mvm
,
1396 struct ieee80211_vif
*vif
,
1397 struct ieee80211_sta
*sta
,
1398 struct ieee80211_key_conf
*keyconf
,
1399 bool have_key_offset
)
1401 bool mcast
= !(keyconf
->flags
& IEEE80211_KEY_FLAG_PAIRWISE
);
1405 lockdep_assert_held(&mvm
->mutex
);
1407 /* Get the station id from the mvm local station table */
1408 sta_id
= iwl_mvm_get_key_sta_id(vif
, sta
);
1409 if (sta_id
== IWL_MVM_STATION_COUNT
) {
1410 IWL_ERR(mvm
, "Failed to find station id\n");
1414 if (keyconf
->cipher
== WLAN_CIPHER_SUITE_AES_CMAC
) {
1415 ret
= iwl_mvm_send_sta_igtk(mvm
, keyconf
, sta_id
, false);
1420 * It is possible that the 'sta' parameter is NULL, and thus
1421 * there is a need to retrieve the sta from the local station table.
1424 sta
= rcu_dereference_protected(mvm
->fw_id_to_mac_id
[sta_id
],
1425 lockdep_is_held(&mvm
->mutex
));
1426 if (IS_ERR_OR_NULL(sta
)) {
1427 IWL_ERR(mvm
, "Invalid station id\n");
1432 if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta
)->vif
!= vif
))
1435 if (!have_key_offset
) {
1437 * The D3 firmware hardcodes the PTK offset to 0, so we have to
1438 * configure it there. As a result, this workaround exists to
1439 * let the caller set the key offset (hw_key_idx), see d3.c.
1441 keyconf
->hw_key_idx
= iwl_mvm_set_fw_key_idx(mvm
);
1442 if (keyconf
->hw_key_idx
== STA_KEY_IDX_INVALID
)
1446 ret
= __iwl_mvm_set_sta_key(mvm
, vif
, sta
, keyconf
, mcast
);
1448 __clear_bit(keyconf
->hw_key_idx
, mvm
->fw_key_table
);
1453 * For WEP, the same key is used for multicast and unicast. Upload it
1454 * again, using the same key offset, and now pointing the other one
1455 * to the same key slot (offset).
1456 * If this fails, remove the original as well.
1458 if (keyconf
->cipher
== WLAN_CIPHER_SUITE_WEP40
||
1459 keyconf
->cipher
== WLAN_CIPHER_SUITE_WEP104
) {
1460 ret
= __iwl_mvm_set_sta_key(mvm
, vif
, sta
, keyconf
, !mcast
);
1462 __clear_bit(keyconf
->hw_key_idx
, mvm
->fw_key_table
);
1463 __iwl_mvm_remove_sta_key(mvm
, sta_id
, keyconf
, mcast
);
1468 IWL_DEBUG_WEP(mvm
, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n",
1469 keyconf
->cipher
, keyconf
->keylen
, keyconf
->keyidx
,
1474 int iwl_mvm_remove_sta_key(struct iwl_mvm
*mvm
,
1475 struct ieee80211_vif
*vif
,
1476 struct ieee80211_sta
*sta
,
1477 struct ieee80211_key_conf
*keyconf
)
1479 bool mcast
= !(keyconf
->flags
& IEEE80211_KEY_FLAG_PAIRWISE
);
1483 lockdep_assert_held(&mvm
->mutex
);
1485 /* Get the station id from the mvm local station table */
1486 sta_id
= iwl_mvm_get_key_sta_id(vif
, sta
);
1488 IWL_DEBUG_WEP(mvm
, "mvm remove dynamic key: idx=%d sta=%d\n",
1489 keyconf
->keyidx
, sta_id
);
1491 if (keyconf
->cipher
== WLAN_CIPHER_SUITE_AES_CMAC
)
1492 return iwl_mvm_send_sta_igtk(mvm
, keyconf
, sta_id
, true);
1494 if (!__test_and_clear_bit(keyconf
->hw_key_idx
, mvm
->fw_key_table
)) {
1495 IWL_ERR(mvm
, "offset %d not used in fw key table.\n",
1496 keyconf
->hw_key_idx
);
1500 if (sta_id
== IWL_MVM_STATION_COUNT
) {
1501 IWL_DEBUG_WEP(mvm
, "station non-existent, early return.\n");
1506 * It is possible that the 'sta' parameter is NULL, and thus
1507 * there is a need to retrieve the sta from the local station table,
1508 * for example when a GTK is removed (where the sta_id will then be
1509 * the AP ID, and no station was passed by mac80211.)
1512 sta
= rcu_dereference_protected(mvm
->fw_id_to_mac_id
[sta_id
],
1513 lockdep_is_held(&mvm
->mutex
));
1515 IWL_ERR(mvm
, "Invalid station id\n");
1520 if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta
)->vif
!= vif
))
1523 ret
= __iwl_mvm_remove_sta_key(mvm
, sta_id
, keyconf
, mcast
);
1527 /* delete WEP key twice to get rid of (now useless) offset */
1528 if (keyconf
->cipher
== WLAN_CIPHER_SUITE_WEP40
||
1529 keyconf
->cipher
== WLAN_CIPHER_SUITE_WEP104
)
1530 ret
= __iwl_mvm_remove_sta_key(mvm
, sta_id
, keyconf
, !mcast
);
1535 void iwl_mvm_update_tkip_key(struct iwl_mvm
*mvm
,
1536 struct ieee80211_vif
*vif
,
1537 struct ieee80211_key_conf
*keyconf
,
1538 struct ieee80211_sta
*sta
, u32 iv32
,
1541 struct iwl_mvm_sta
*mvm_sta
;
1542 u8 sta_id
= iwl_mvm_get_key_sta_id(vif
, sta
);
1543 bool mcast
= !(keyconf
->flags
& IEEE80211_KEY_FLAG_PAIRWISE
);
1545 if (WARN_ON_ONCE(sta_id
== IWL_MVM_STATION_COUNT
))
1551 sta
= rcu_dereference(mvm
->fw_id_to_mac_id
[sta_id
]);
1552 if (WARN_ON(IS_ERR_OR_NULL(sta
))) {
1558 mvm_sta
= iwl_mvm_sta_from_mac80211(sta
);
1559 iwl_mvm_send_sta_key(mvm
, mvm_sta
, keyconf
, mcast
,
1560 iv32
, phase1key
, CMD_ASYNC
);
1564 void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm
*mvm
,
1565 struct ieee80211_sta
*sta
)
1567 struct iwl_mvm_sta
*mvmsta
= iwl_mvm_sta_from_mac80211(sta
);
1568 struct iwl_mvm_add_sta_cmd cmd
= {
1569 .add_modify
= STA_MODE_MODIFY
,
1570 .sta_id
= mvmsta
->sta_id
,
1571 .station_flags_msk
= cpu_to_le32(STA_FLG_PS
),
1572 .mac_id_n_color
= cpu_to_le32(mvmsta
->mac_id_n_color
),
1576 ret
= iwl_mvm_send_cmd_pdu(mvm
, ADD_STA
, CMD_ASYNC
, sizeof(cmd
), &cmd
);
1578 IWL_ERR(mvm
, "Failed to send ADD_STA command (%d)\n", ret
);
1581 void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm
*mvm
,
1582 struct ieee80211_sta
*sta
,
1583 enum ieee80211_frame_release_type reason
,
1584 u16 cnt
, u16 tids
, bool more_data
,
1587 struct iwl_mvm_sta
*mvmsta
= iwl_mvm_sta_from_mac80211(sta
);
1588 struct iwl_mvm_add_sta_cmd cmd
= {
1589 .add_modify
= STA_MODE_MODIFY
,
1590 .sta_id
= mvmsta
->sta_id
,
1591 .modify_mask
= STA_MODIFY_SLEEPING_STA_TX_COUNT
,
1592 .sleep_tx_count
= cpu_to_le16(cnt
),
1593 .mac_id_n_color
= cpu_to_le32(mvmsta
->mac_id_n_color
),
1596 unsigned long _tids
= tids
;
1598 /* convert TIDs to ACs - we don't support TSPEC so that's OK
1599 * Note that this field is reserved and unused by firmware not
1600 * supporting GO uAPSD, so it's safe to always do this.
1602 for_each_set_bit(tid
, &_tids
, IWL_MAX_TID_COUNT
)
1603 cmd
.awake_acs
|= BIT(tid_to_ucode_ac
[tid
]);
1605 /* If we're releasing frames from aggregation queues then check if the
1606 * all queues combined that we're releasing frames from have
1607 * - more frames than the service period, in which case more_data
1609 * - fewer than 'cnt' frames, in which case we need to adjust the
1610 * firmware command (but do that unconditionally)
1613 int remaining
= cnt
;
1615 spin_lock_bh(&mvmsta
->lock
);
1616 for_each_set_bit(tid
, &_tids
, IWL_MAX_TID_COUNT
) {
1617 struct iwl_mvm_tid_data
*tid_data
;
1620 tid_data
= &mvmsta
->tid_data
[tid
];
1621 if (WARN(tid_data
->state
!= IWL_AGG_ON
&&
1622 tid_data
->state
!= IWL_EMPTYING_HW_QUEUE_DELBA
,
1623 "TID %d state is %d\n",
1624 tid
, tid_data
->state
)) {
1625 spin_unlock_bh(&mvmsta
->lock
);
1626 ieee80211_sta_eosp(sta
);
1630 n_queued
= iwl_mvm_tid_queued(tid_data
);
1631 if (n_queued
> remaining
) {
1636 remaining
-= n_queued
;
1638 spin_unlock_bh(&mvmsta
->lock
);
1640 cmd
.sleep_tx_count
= cpu_to_le16(cnt
- remaining
);
1641 if (WARN_ON(cnt
- remaining
== 0)) {
1642 ieee80211_sta_eosp(sta
);
1647 /* Note: this is ignored by firmware not supporting GO uAPSD */
1649 cmd
.sleep_state_flags
|= cpu_to_le16(STA_SLEEP_STATE_MOREDATA
);
1651 if (reason
== IEEE80211_FRAME_RELEASE_PSPOLL
) {
1652 mvmsta
->next_status_eosp
= true;
1653 cmd
.sleep_state_flags
|= cpu_to_le16(STA_SLEEP_STATE_PS_POLL
);
1655 cmd
.sleep_state_flags
|= cpu_to_le16(STA_SLEEP_STATE_UAPSD
);
1658 ret
= iwl_mvm_send_cmd_pdu(mvm
, ADD_STA
, CMD_ASYNC
, sizeof(cmd
), &cmd
);
1660 IWL_ERR(mvm
, "Failed to send ADD_STA command (%d)\n", ret
);
1663 int iwl_mvm_rx_eosp_notif(struct iwl_mvm
*mvm
,
1664 struct iwl_rx_cmd_buffer
*rxb
,
1665 struct iwl_device_cmd
*cmd
)
1667 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
1668 struct iwl_mvm_eosp_notification
*notif
= (void *)pkt
->data
;
1669 struct ieee80211_sta
*sta
;
1670 u32 sta_id
= le32_to_cpu(notif
->sta_id
);
1672 if (WARN_ON_ONCE(sta_id
>= IWL_MVM_STATION_COUNT
))
1676 sta
= rcu_dereference(mvm
->fw_id_to_mac_id
[sta_id
]);
1677 if (!IS_ERR_OR_NULL(sta
))
1678 ieee80211_sta_eosp(sta
);
1684 void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm
*mvm
,
1685 struct iwl_mvm_sta
*mvmsta
, bool disable
)
1687 struct iwl_mvm_add_sta_cmd cmd
= {
1688 .add_modify
= STA_MODE_MODIFY
,
1689 .sta_id
= mvmsta
->sta_id
,
1690 .station_flags
= disable
? cpu_to_le32(STA_FLG_DISABLE_TX
) : 0,
1691 .station_flags_msk
= cpu_to_le32(STA_FLG_DISABLE_TX
),
1692 .mac_id_n_color
= cpu_to_le32(mvmsta
->mac_id_n_color
),
1696 ret
= iwl_mvm_send_cmd_pdu(mvm
, ADD_STA
, CMD_ASYNC
, sizeof(cmd
), &cmd
);
1698 IWL_ERR(mvm
, "Failed to send ADD_STA command (%d)\n", ret
);
1701 void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm
*mvm
,
1702 struct ieee80211_sta
*sta
,
1705 struct iwl_mvm_sta
*mvm_sta
= iwl_mvm_sta_from_mac80211(sta
);
1707 spin_lock_bh(&mvm_sta
->lock
);
1709 if (mvm_sta
->disable_tx
== disable
) {
1710 spin_unlock_bh(&mvm_sta
->lock
);
1714 mvm_sta
->disable_tx
= disable
;
1717 * Tell mac80211 to start/stop queuing tx for this station,
1718 * but don't stop queuing if there are still pending frames
1721 if (disable
|| !atomic_read(&mvm
->pending_frames
[mvm_sta
->sta_id
]))
1722 ieee80211_sta_block_awake(mvm
->hw
, sta
, disable
);
1724 iwl_mvm_sta_modify_disable_tx(mvm
, mvm_sta
, disable
);
1726 spin_unlock_bh(&mvm_sta
->lock
);
1729 void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm
*mvm
,
1730 struct iwl_mvm_vif
*mvmvif
,
1733 struct ieee80211_sta
*sta
;
1734 struct iwl_mvm_sta
*mvm_sta
;
1737 lockdep_assert_held(&mvm
->mutex
);
1739 /* Block/unblock all the stations of the given mvmvif */
1740 for (i
= 0; i
< IWL_MVM_STATION_COUNT
; i
++) {
1741 sta
= rcu_dereference_protected(mvm
->fw_id_to_mac_id
[i
],
1742 lockdep_is_held(&mvm
->mutex
));
1743 if (IS_ERR_OR_NULL(sta
))
1746 mvm_sta
= iwl_mvm_sta_from_mac80211(sta
);
1747 if (mvm_sta
->mac_id_n_color
!=
1748 FW_CMD_ID_AND_COLOR(mvmvif
->id
, mvmvif
->color
))
1751 iwl_mvm_sta_modify_disable_tx_ap(mvm
, sta
, disable
);
1755 void iwl_mvm_csa_client_absent(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
)
1757 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
1758 struct iwl_mvm_sta
*mvmsta
;
1762 mvmsta
= iwl_mvm_sta_from_staid_rcu(mvm
, mvmvif
->ap_sta_id
);
1764 if (!WARN_ON(!mvmsta
))
1765 iwl_mvm_sta_modify_disable_tx(mvm
, mvmsta
, true);