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 mvmsta
->hw_queue
[ac
],
238 iwl_mvm_ac_to_tx_fifo
[ac
], 0,
240 mvmsta
->tfd_queue_msk
|= BIT(mvmsta
->hw_queue
[ac
]);
246 static void iwl_mvm_tdls_sta_deinit(struct iwl_mvm
*mvm
,
247 struct ieee80211_sta
*sta
)
249 struct iwl_mvm_sta
*mvmsta
= iwl_mvm_sta_from_mac80211(sta
);
250 unsigned long sta_msk
;
253 lockdep_assert_held(&mvm
->mutex
);
255 /* disable the TDLS STA-specific queues */
256 sta_msk
= mvmsta
->tfd_queue_msk
;
257 for_each_set_bit(i
, &sta_msk
, sizeof(sta_msk
) * BITS_PER_BYTE
)
258 iwl_mvm_disable_txq(mvm
, i
, i
, IWL_MAX_TID_COUNT
, 0);
261 int iwl_mvm_add_sta(struct iwl_mvm
*mvm
,
262 struct ieee80211_vif
*vif
,
263 struct ieee80211_sta
*sta
)
265 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
266 struct iwl_mvm_sta
*mvm_sta
= iwl_mvm_sta_from_mac80211(sta
);
269 lockdep_assert_held(&mvm
->mutex
);
271 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART
, &mvm
->status
))
272 sta_id
= iwl_mvm_find_free_sta_id(mvm
,
273 ieee80211_vif_type_p2p(vif
));
275 sta_id
= mvm_sta
->sta_id
;
277 if (sta_id
== IWL_MVM_STATION_COUNT
)
280 if (vif
->type
== NL80211_IFTYPE_AP
) {
281 mvmvif
->ap_assoc_sta_count
++;
282 iwl_mvm_mac_ctxt_changed(mvm
, vif
, false, NULL
);
285 spin_lock_init(&mvm_sta
->lock
);
287 mvm_sta
->sta_id
= sta_id
;
288 mvm_sta
->mac_id_n_color
= FW_CMD_ID_AND_COLOR(mvmvif
->id
,
291 mvm_sta
->max_agg_bufsize
= LINK_QUAL_AGG_FRAME_LIMIT_DEF
;
292 mvm_sta
->tx_protection
= 0;
293 mvm_sta
->tt_tx_protection
= false;
295 /* HW restart, don't assume the memory has been zeroed */
296 atomic_set(&mvm
->pending_frames
[sta_id
], 0);
297 mvm_sta
->tid_disable_agg
= 0xffff; /* No aggs at first */
298 mvm_sta
->tfd_queue_msk
= 0;
300 /* allocate new queues for a TDLS station */
302 ret
= iwl_mvm_tdls_sta_init(mvm
, sta
);
306 for (i
= 0; i
< IEEE80211_NUM_ACS
; i
++)
307 if (vif
->hw_queue
[i
] != IEEE80211_INVAL_HW_QUEUE
)
308 mvm_sta
->tfd_queue_msk
|= BIT(vif
->hw_queue
[i
]);
311 /* for HW restart - reset everything but the sequence number */
312 for (i
= 0; i
< IWL_MAX_TID_COUNT
; i
++) {
313 u16 seq
= mvm_sta
->tid_data
[i
].seq_number
;
314 memset(&mvm_sta
->tid_data
[i
], 0, sizeof(mvm_sta
->tid_data
[i
]));
315 mvm_sta
->tid_data
[i
].seq_number
= seq
;
317 mvm_sta
->agg_tids
= 0;
319 ret
= iwl_mvm_sta_send_to_fw(mvm
, sta
, false);
323 if (vif
->type
== NL80211_IFTYPE_STATION
) {
325 WARN_ON(mvmvif
->ap_sta_id
!= IWL_MVM_STATION_COUNT
);
326 mvmvif
->ap_sta_id
= sta_id
;
328 WARN_ON(mvmvif
->ap_sta_id
== IWL_MVM_STATION_COUNT
);
332 rcu_assign_pointer(mvm
->fw_id_to_mac_id
[sta_id
], sta
);
337 iwl_mvm_tdls_sta_deinit(mvm
, sta
);
341 int iwl_mvm_update_sta(struct iwl_mvm
*mvm
,
342 struct ieee80211_vif
*vif
,
343 struct ieee80211_sta
*sta
)
345 return iwl_mvm_sta_send_to_fw(mvm
, sta
, true);
348 int iwl_mvm_drain_sta(struct iwl_mvm
*mvm
, struct iwl_mvm_sta
*mvmsta
,
351 struct iwl_mvm_add_sta_cmd cmd
= {};
355 lockdep_assert_held(&mvm
->mutex
);
357 cmd
.mac_id_n_color
= cpu_to_le32(mvmsta
->mac_id_n_color
);
358 cmd
.sta_id
= mvmsta
->sta_id
;
359 cmd
.add_modify
= STA_MODE_MODIFY
;
360 cmd
.station_flags
= drain
? cpu_to_le32(STA_FLG_DRAIN_FLOW
) : 0;
361 cmd
.station_flags_msk
= cpu_to_le32(STA_FLG_DRAIN_FLOW
);
363 status
= ADD_STA_SUCCESS
;
364 ret
= iwl_mvm_send_cmd_pdu_status(mvm
, ADD_STA
, sizeof(cmd
),
370 case ADD_STA_SUCCESS
:
371 IWL_DEBUG_INFO(mvm
, "Frames for staid %d will drained in fw\n",
376 IWL_ERR(mvm
, "Couldn't drain frames for staid %d\n",
385 * Remove a station from the FW table. Before sending the command to remove
386 * the station validate that the station is indeed known to the driver (sanity
389 static int iwl_mvm_rm_sta_common(struct iwl_mvm
*mvm
, u8 sta_id
)
391 struct ieee80211_sta
*sta
;
392 struct iwl_mvm_rm_sta_cmd rm_sta_cmd
= {
397 sta
= rcu_dereference_protected(mvm
->fw_id_to_mac_id
[sta_id
],
398 lockdep_is_held(&mvm
->mutex
));
400 /* Note: internal stations are marked as error values */
402 IWL_ERR(mvm
, "Invalid station id\n");
406 ret
= iwl_mvm_send_cmd_pdu(mvm
, REMOVE_STA
, 0,
407 sizeof(rm_sta_cmd
), &rm_sta_cmd
);
409 IWL_ERR(mvm
, "Failed to remove station. Id=%d\n", sta_id
);
416 void iwl_mvm_sta_drained_wk(struct work_struct
*wk
)
418 struct iwl_mvm
*mvm
= container_of(wk
, struct iwl_mvm
, sta_drained_wk
);
422 * The mutex is needed because of the SYNC cmd, but not only: if the
423 * work would run concurrently with iwl_mvm_rm_sta, it would run before
424 * iwl_mvm_rm_sta sets the station as busy, and exit. Then
425 * iwl_mvm_rm_sta would set the station as busy, and nobody will clean
428 mutex_lock(&mvm
->mutex
);
430 for_each_set_bit(sta_id
, mvm
->sta_drained
, IWL_MVM_STATION_COUNT
) {
432 struct ieee80211_sta
*sta
=
433 rcu_dereference_protected(mvm
->fw_id_to_mac_id
[sta_id
],
434 lockdep_is_held(&mvm
->mutex
));
437 * This station is in use or RCU-removed; the latter happens in
438 * managed mode, where mac80211 removes the station before we
439 * can remove it from firmware (we can only do that after the
440 * MAC is marked unassociated), and possibly while the deauth
441 * frame to disconnect from the AP is still queued. Then, the
442 * station pointer is -ENOENT when the last skb is reclaimed.
444 if (!IS_ERR(sta
) || PTR_ERR(sta
) == -ENOENT
)
447 if (PTR_ERR(sta
) == -EINVAL
) {
448 IWL_ERR(mvm
, "Drained sta %d, but it is internal?\n",
454 IWL_ERR(mvm
, "Drained sta %d, but it was NULL?\n",
459 WARN_ON(PTR_ERR(sta
) != -EBUSY
);
460 /* This station was removed and we waited until it got drained,
461 * we can now proceed and remove it.
463 ret
= iwl_mvm_rm_sta_common(mvm
, sta_id
);
466 "Couldn't remove sta %d after it was drained\n",
470 RCU_INIT_POINTER(mvm
->fw_id_to_mac_id
[sta_id
], NULL
);
471 clear_bit(sta_id
, mvm
->sta_drained
);
473 if (mvm
->tfd_drained
[sta_id
]) {
474 unsigned long i
, msk
= mvm
->tfd_drained
[sta_id
];
476 for_each_set_bit(i
, &msk
, sizeof(msk
) * BITS_PER_BYTE
)
477 iwl_mvm_disable_txq(mvm
, i
, i
,
478 IWL_MAX_TID_COUNT
, 0);
480 mvm
->tfd_drained
[sta_id
] = 0;
481 IWL_DEBUG_TDLS(mvm
, "Drained sta %d, with queues %ld\n",
486 mutex_unlock(&mvm
->mutex
);
489 int iwl_mvm_rm_sta(struct iwl_mvm
*mvm
,
490 struct ieee80211_vif
*vif
,
491 struct ieee80211_sta
*sta
)
493 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
494 struct iwl_mvm_sta
*mvm_sta
= iwl_mvm_sta_from_mac80211(sta
);
497 lockdep_assert_held(&mvm
->mutex
);
499 if (vif
->type
== NL80211_IFTYPE_STATION
&&
500 mvmvif
->ap_sta_id
== mvm_sta
->sta_id
) {
501 ret
= iwl_mvm_drain_sta(mvm
, mvm_sta
, true);
504 /* flush its queues here since we are freeing mvm_sta */
505 ret
= iwl_mvm_flush_tx_path(mvm
, mvm_sta
->tfd_queue_msk
, 0);
508 ret
= iwl_trans_wait_tx_queue_empty(mvm
->trans
,
509 mvm_sta
->tfd_queue_msk
);
512 ret
= iwl_mvm_drain_sta(mvm
, mvm_sta
, false);
514 /* if we are associated - we can't remove the AP STA now */
515 if (vif
->bss_conf
.assoc
)
518 /* unassoc - go ahead - remove the AP STA now */
519 mvmvif
->ap_sta_id
= IWL_MVM_STATION_COUNT
;
521 /* clear d0i3_ap_sta_id if no longer relevant */
522 if (mvm
->d0i3_ap_sta_id
== mvm_sta
->sta_id
)
523 mvm
->d0i3_ap_sta_id
= IWL_MVM_STATION_COUNT
;
527 * This shouldn't happen - the TDLS channel switch should be canceled
528 * before the STA is removed.
530 if (WARN_ON_ONCE(mvm
->tdls_cs
.peer
.sta_id
== mvm_sta
->sta_id
)) {
531 mvm
->tdls_cs
.peer
.sta_id
= IWL_MVM_STATION_COUNT
;
532 cancel_delayed_work(&mvm
->tdls_cs
.dwork
);
536 * Make sure that the tx response code sees the station as -EBUSY and
537 * calls the drain worker.
539 spin_lock_bh(&mvm_sta
->lock
);
541 * There are frames pending on the AC queues for this station.
542 * We need to wait until all the frames are drained...
544 if (atomic_read(&mvm
->pending_frames
[mvm_sta
->sta_id
])) {
545 rcu_assign_pointer(mvm
->fw_id_to_mac_id
[mvm_sta
->sta_id
],
547 spin_unlock_bh(&mvm_sta
->lock
);
549 /* disable TDLS sta queues on drain complete */
551 mvm
->tfd_drained
[mvm_sta
->sta_id
] =
552 mvm_sta
->tfd_queue_msk
;
553 IWL_DEBUG_TDLS(mvm
, "Draining TDLS sta %d\n",
557 ret
= iwl_mvm_drain_sta(mvm
, mvm_sta
, true);
559 spin_unlock_bh(&mvm_sta
->lock
);
562 iwl_mvm_tdls_sta_deinit(mvm
, sta
);
564 ret
= iwl_mvm_rm_sta_common(mvm
, mvm_sta
->sta_id
);
565 RCU_INIT_POINTER(mvm
->fw_id_to_mac_id
[mvm_sta
->sta_id
], NULL
);
571 int iwl_mvm_rm_sta_id(struct iwl_mvm
*mvm
,
572 struct ieee80211_vif
*vif
,
575 int ret
= iwl_mvm_rm_sta_common(mvm
, sta_id
);
577 lockdep_assert_held(&mvm
->mutex
);
579 RCU_INIT_POINTER(mvm
->fw_id_to_mac_id
[sta_id
], NULL
);
583 static int iwl_mvm_allocate_int_sta(struct iwl_mvm
*mvm
,
584 struct iwl_mvm_int_sta
*sta
,
585 u32 qmask
, enum nl80211_iftype iftype
)
587 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART
, &mvm
->status
)) {
588 sta
->sta_id
= iwl_mvm_find_free_sta_id(mvm
, iftype
);
589 if (WARN_ON_ONCE(sta
->sta_id
== IWL_MVM_STATION_COUNT
))
593 sta
->tfd_queue_msk
= qmask
;
595 /* put a non-NULL value so iterating over the stations won't stop */
596 rcu_assign_pointer(mvm
->fw_id_to_mac_id
[sta
->sta_id
], ERR_PTR(-EINVAL
));
600 static void iwl_mvm_dealloc_int_sta(struct iwl_mvm
*mvm
,
601 struct iwl_mvm_int_sta
*sta
)
603 RCU_INIT_POINTER(mvm
->fw_id_to_mac_id
[sta
->sta_id
], NULL
);
604 memset(sta
, 0, sizeof(struct iwl_mvm_int_sta
));
605 sta
->sta_id
= IWL_MVM_STATION_COUNT
;
608 static int iwl_mvm_add_int_sta_common(struct iwl_mvm
*mvm
,
609 struct iwl_mvm_int_sta
*sta
,
611 u16 mac_id
, u16 color
)
613 struct iwl_mvm_add_sta_cmd cmd
;
617 lockdep_assert_held(&mvm
->mutex
);
619 memset(&cmd
, 0, sizeof(cmd
));
620 cmd
.sta_id
= sta
->sta_id
;
621 cmd
.mac_id_n_color
= cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id
,
624 cmd
.tfd_queue_msk
= cpu_to_le32(sta
->tfd_queue_msk
);
627 memcpy(cmd
.addr
, addr
, ETH_ALEN
);
629 ret
= iwl_mvm_send_cmd_pdu_status(mvm
, ADD_STA
, sizeof(cmd
),
635 case ADD_STA_SUCCESS
:
636 IWL_DEBUG_INFO(mvm
, "Internal station added.\n");
640 IWL_ERR(mvm
, "Add internal station failed, status=0x%x\n",
647 int iwl_mvm_add_aux_sta(struct iwl_mvm
*mvm
)
649 unsigned int wdg_timeout
= iwlmvm_mod_params
.tfd_q_hang_detect
?
650 mvm
->cfg
->base_params
->wd_timeout
:
651 IWL_WATCHDOG_DISABLED
;
654 lockdep_assert_held(&mvm
->mutex
);
656 /* Map Aux queue to fifo - needs to happen before adding Aux station */
657 iwl_mvm_enable_ac_txq(mvm
, mvm
->aux_queue
, mvm
->aux_queue
,
658 IWL_MVM_TX_FIFO_MCAST
, 0, wdg_timeout
);
660 /* Allocate aux station and assign to it the aux queue */
661 ret
= iwl_mvm_allocate_int_sta(mvm
, &mvm
->aux_sta
, BIT(mvm
->aux_queue
),
662 NL80211_IFTYPE_UNSPECIFIED
);
666 ret
= iwl_mvm_add_int_sta_common(mvm
, &mvm
->aux_sta
, NULL
,
670 iwl_mvm_dealloc_int_sta(mvm
, &mvm
->aux_sta
);
674 void iwl_mvm_del_aux_sta(struct iwl_mvm
*mvm
)
676 lockdep_assert_held(&mvm
->mutex
);
678 iwl_mvm_dealloc_int_sta(mvm
, &mvm
->aux_sta
);
682 * Send the add station command for the vif's broadcast station.
683 * Assumes that the station was already allocated.
685 * @mvm: the mvm component
686 * @vif: the interface to which the broadcast station is added
687 * @bsta: the broadcast station to add.
689 int iwl_mvm_send_add_bcast_sta(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
)
691 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
692 struct iwl_mvm_int_sta
*bsta
= &mvmvif
->bcast_sta
;
693 static const u8 _baddr
[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
694 const u8
*baddr
= _baddr
;
696 lockdep_assert_held(&mvm
->mutex
);
698 if (vif
->type
== NL80211_IFTYPE_ADHOC
)
699 baddr
= vif
->bss_conf
.bssid
;
701 if (WARN_ON_ONCE(bsta
->sta_id
== IWL_MVM_STATION_COUNT
))
704 return iwl_mvm_add_int_sta_common(mvm
, bsta
, baddr
,
705 mvmvif
->id
, mvmvif
->color
);
708 /* Send the FW a request to remove the station from it's internal data
709 * structures, but DO NOT remove the entry from the local data structures. */
710 int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
)
712 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
715 lockdep_assert_held(&mvm
->mutex
);
717 ret
= iwl_mvm_rm_sta_common(mvm
, mvmvif
->bcast_sta
.sta_id
);
719 IWL_WARN(mvm
, "Failed sending remove station\n");
723 int iwl_mvm_alloc_bcast_sta(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
)
725 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
728 lockdep_assert_held(&mvm
->mutex
);
730 qmask
= iwl_mvm_mac_get_queues_mask(vif
);
733 * The firmware defines the TFD queue mask to only be relevant
734 * for *unicast* queues, so the multicast (CAB) queue shouldn't
737 if (vif
->type
== NL80211_IFTYPE_AP
)
738 qmask
&= ~BIT(vif
->cab_queue
);
740 return iwl_mvm_allocate_int_sta(mvm
, &mvmvif
->bcast_sta
, qmask
,
741 ieee80211_vif_type_p2p(vif
));
744 /* Allocate a new station entry for the broadcast station to the given vif,
745 * and send it to the FW.
746 * Note that each P2P mac should have its own broadcast station.
748 * @mvm: the mvm component
749 * @vif: the interface to which the broadcast station is added
750 * @bsta: the broadcast station to add. */
751 int iwl_mvm_add_bcast_sta(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
)
753 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
754 struct iwl_mvm_int_sta
*bsta
= &mvmvif
->bcast_sta
;
757 lockdep_assert_held(&mvm
->mutex
);
759 ret
= iwl_mvm_alloc_bcast_sta(mvm
, vif
);
763 ret
= iwl_mvm_send_add_bcast_sta(mvm
, vif
);
766 iwl_mvm_dealloc_int_sta(mvm
, bsta
);
771 void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
)
773 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
775 iwl_mvm_dealloc_int_sta(mvm
, &mvmvif
->bcast_sta
);
779 * Send the FW a request to remove the station from it's internal data
780 * structures, and in addition remove it from the local data structure.
782 int iwl_mvm_rm_bcast_sta(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
)
786 lockdep_assert_held(&mvm
->mutex
);
788 ret
= iwl_mvm_send_rm_bcast_sta(mvm
, vif
);
790 iwl_mvm_dealloc_bcast_sta(mvm
, vif
);
795 #define IWL_MAX_RX_BA_SESSIONS 16
797 int iwl_mvm_sta_rx_agg(struct iwl_mvm
*mvm
, struct ieee80211_sta
*sta
,
798 int tid
, u16 ssn
, bool start
)
800 struct iwl_mvm_sta
*mvm_sta
= iwl_mvm_sta_from_mac80211(sta
);
801 struct iwl_mvm_add_sta_cmd cmd
= {};
805 lockdep_assert_held(&mvm
->mutex
);
807 if (start
&& mvm
->rx_ba_sessions
>= IWL_MAX_RX_BA_SESSIONS
) {
808 IWL_WARN(mvm
, "Not enough RX BA SESSIONS\n");
812 cmd
.mac_id_n_color
= cpu_to_le32(mvm_sta
->mac_id_n_color
);
813 cmd
.sta_id
= mvm_sta
->sta_id
;
814 cmd
.add_modify
= STA_MODE_MODIFY
;
816 cmd
.add_immediate_ba_tid
= (u8
) tid
;
817 cmd
.add_immediate_ba_ssn
= cpu_to_le16(ssn
);
819 cmd
.remove_immediate_ba_tid
= (u8
) tid
;
821 cmd
.modify_mask
= start
? STA_MODIFY_ADD_BA_TID
:
822 STA_MODIFY_REMOVE_BA_TID
;
824 status
= ADD_STA_SUCCESS
;
825 ret
= iwl_mvm_send_cmd_pdu_status(mvm
, ADD_STA
, sizeof(cmd
),
831 case ADD_STA_SUCCESS
:
832 IWL_DEBUG_INFO(mvm
, "RX BA Session %sed in fw\n",
833 start
? "start" : "stopp");
835 case ADD_STA_IMMEDIATE_BA_FAILURE
:
836 IWL_WARN(mvm
, "RX BA Session refused by fw\n");
841 IWL_ERR(mvm
, "RX BA Session failed %sing, status 0x%x\n",
842 start
? "start" : "stopp", status
);
848 mvm
->rx_ba_sessions
++;
849 else if (mvm
->rx_ba_sessions
> 0)
850 /* check that restart flow didn't zero the counter */
851 mvm
->rx_ba_sessions
--;
857 static int iwl_mvm_sta_tx_agg(struct iwl_mvm
*mvm
, struct ieee80211_sta
*sta
,
858 int tid
, u8 queue
, bool start
)
860 struct iwl_mvm_sta
*mvm_sta
= iwl_mvm_sta_from_mac80211(sta
);
861 struct iwl_mvm_add_sta_cmd cmd
= {};
865 lockdep_assert_held(&mvm
->mutex
);
868 mvm_sta
->tfd_queue_msk
|= BIT(queue
);
869 mvm_sta
->tid_disable_agg
&= ~BIT(tid
);
871 mvm_sta
->tfd_queue_msk
&= ~BIT(queue
);
872 mvm_sta
->tid_disable_agg
|= BIT(tid
);
875 cmd
.mac_id_n_color
= cpu_to_le32(mvm_sta
->mac_id_n_color
);
876 cmd
.sta_id
= mvm_sta
->sta_id
;
877 cmd
.add_modify
= STA_MODE_MODIFY
;
878 cmd
.modify_mask
= STA_MODIFY_QUEUES
| STA_MODIFY_TID_DISABLE_TX
;
879 cmd
.tfd_queue_msk
= cpu_to_le32(mvm_sta
->tfd_queue_msk
);
880 cmd
.tid_disable_tx
= cpu_to_le16(mvm_sta
->tid_disable_agg
);
882 status
= ADD_STA_SUCCESS
;
883 ret
= iwl_mvm_send_cmd_pdu_status(mvm
, ADD_STA
, sizeof(cmd
),
889 case ADD_STA_SUCCESS
:
893 IWL_ERR(mvm
, "TX BA Session failed %sing, status 0x%x\n",
894 start
? "start" : "stopp", status
);
901 const u8 tid_to_mac80211_ac
[] = {
912 static const u8 tid_to_ucode_ac
[] = {
923 int iwl_mvm_sta_tx_agg_start(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
,
924 struct ieee80211_sta
*sta
, u16 tid
, u16
*ssn
)
926 struct iwl_mvm_sta
*mvmsta
= iwl_mvm_sta_from_mac80211(sta
);
927 struct iwl_mvm_tid_data
*tid_data
;
931 if (WARN_ON_ONCE(tid
>= IWL_MAX_TID_COUNT
))
934 if (mvmsta
->tid_data
[tid
].state
!= IWL_AGG_OFF
) {
935 IWL_ERR(mvm
, "Start AGG when state is not IWL_AGG_OFF %d!\n",
936 mvmsta
->tid_data
[tid
].state
);
940 lockdep_assert_held(&mvm
->mutex
);
942 spin_lock_bh(&mvmsta
->lock
);
944 /* possible race condition - we entered D0i3 while starting agg */
945 if (test_bit(IWL_MVM_STATUS_IN_D0I3
, &mvm
->status
)) {
946 spin_unlock_bh(&mvmsta
->lock
);
947 IWL_ERR(mvm
, "Entered D0i3 while starting Tx agg\n");
951 spin_lock_bh(&mvm
->queue_info_lock
);
953 txq_id
= iwl_mvm_find_free_queue(mvm
, mvm
->first_agg_queue
,
954 mvm
->last_agg_queue
);
957 spin_unlock_bh(&mvm
->queue_info_lock
);
958 IWL_ERR(mvm
, "Failed to allocate agg queue\n");
961 mvm
->queue_info
[txq_id
].setup_reserved
= true;
962 spin_unlock_bh(&mvm
->queue_info_lock
);
964 tid_data
= &mvmsta
->tid_data
[tid
];
965 tid_data
->ssn
= IEEE80211_SEQ_TO_SN(tid_data
->seq_number
);
966 tid_data
->txq_id
= txq_id
;
967 *ssn
= tid_data
->ssn
;
969 IWL_DEBUG_TX_QUEUES(mvm
,
970 "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n",
971 mvmsta
->sta_id
, tid
, txq_id
, tid_data
->ssn
,
972 tid_data
->next_reclaimed
);
974 if (tid_data
->ssn
== tid_data
->next_reclaimed
) {
975 tid_data
->state
= IWL_AGG_STARTING
;
976 ieee80211_start_tx_ba_cb_irqsafe(vif
, sta
->addr
, tid
);
978 tid_data
->state
= IWL_EMPTYING_HW_QUEUE_ADDBA
;
984 spin_unlock_bh(&mvmsta
->lock
);
989 int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
,
990 struct ieee80211_sta
*sta
, u16 tid
, u8 buf_size
)
992 struct iwl_mvm_sta
*mvmsta
= iwl_mvm_sta_from_mac80211(sta
);
993 struct iwl_mvm_tid_data
*tid_data
= &mvmsta
->tid_data
[tid
];
994 unsigned int wdg_timeout
=
995 iwl_mvm_get_wd_timeout(mvm
, vif
, sta
->tdls
, false);
996 int queue
, fifo
, ret
;
999 BUILD_BUG_ON((sizeof(mvmsta
->agg_tids
) * BITS_PER_BYTE
)
1000 != IWL_MAX_TID_COUNT
);
1002 buf_size
= min_t(int, buf_size
, LINK_QUAL_AGG_FRAME_LIMIT_DEF
);
1004 spin_lock_bh(&mvmsta
->lock
);
1005 ssn
= tid_data
->ssn
;
1006 queue
= tid_data
->txq_id
;
1007 tid_data
->state
= IWL_AGG_ON
;
1008 mvmsta
->agg_tids
|= BIT(tid
);
1009 tid_data
->ssn
= 0xffff;
1010 spin_unlock_bh(&mvmsta
->lock
);
1012 fifo
= iwl_mvm_ac_to_tx_fifo
[tid_to_mac80211_ac
[tid
]];
1014 iwl_mvm_enable_agg_txq(mvm
, queue
,
1015 vif
->hw_queue
[tid_to_mac80211_ac
[tid
]], fifo
,
1016 mvmsta
->sta_id
, tid
, buf_size
, ssn
, wdg_timeout
);
1018 ret
= iwl_mvm_sta_tx_agg(mvm
, sta
, tid
, queue
, true);
1022 /* No need to mark as reserved */
1023 spin_lock_bh(&mvm
->queue_info_lock
);
1024 mvm
->queue_info
[queue
].setup_reserved
= false;
1025 spin_unlock_bh(&mvm
->queue_info_lock
);
1028 * Even though in theory the peer could have different
1029 * aggregation reorder buffer sizes for different sessions,
1030 * our ucode doesn't allow for that and has a global limit
1031 * for each station. Therefore, use the minimum of all the
1032 * aggregation sessions and our default value.
1034 mvmsta
->max_agg_bufsize
=
1035 min(mvmsta
->max_agg_bufsize
, buf_size
);
1036 mvmsta
->lq_sta
.lq
.agg_frame_cnt_limit
= mvmsta
->max_agg_bufsize
;
1038 IWL_DEBUG_HT(mvm
, "Tx aggregation enabled on ra = %pM tid = %d\n",
1041 return iwl_mvm_send_lq_cmd(mvm
, &mvmsta
->lq_sta
.lq
, false);
1044 int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
,
1045 struct ieee80211_sta
*sta
, u16 tid
)
1047 struct iwl_mvm_sta
*mvmsta
= iwl_mvm_sta_from_mac80211(sta
);
1048 struct iwl_mvm_tid_data
*tid_data
= &mvmsta
->tid_data
[tid
];
1054 * If mac80211 is cleaning its state, then say that we finished since
1055 * our state has been cleared anyway.
1057 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART
, &mvm
->status
)) {
1058 ieee80211_stop_tx_ba_cb_irqsafe(vif
, sta
->addr
, tid
);
1062 spin_lock_bh(&mvmsta
->lock
);
1064 txq_id
= tid_data
->txq_id
;
1066 IWL_DEBUG_TX_QUEUES(mvm
, "Stop AGG: sta %d tid %d q %d state %d\n",
1067 mvmsta
->sta_id
, tid
, txq_id
, tid_data
->state
);
1069 mvmsta
->agg_tids
&= ~BIT(tid
);
1071 /* No need to mark as reserved anymore */
1072 spin_lock_bh(&mvm
->queue_info_lock
);
1073 mvm
->queue_info
[txq_id
].setup_reserved
= false;
1074 spin_unlock_bh(&mvm
->queue_info_lock
);
1076 switch (tid_data
->state
) {
1078 tid_data
->ssn
= IEEE80211_SEQ_TO_SN(tid_data
->seq_number
);
1080 IWL_DEBUG_TX_QUEUES(mvm
,
1081 "ssn = %d, next_recl = %d\n",
1082 tid_data
->ssn
, tid_data
->next_reclaimed
);
1084 /* There are still packets for this RA / TID in the HW */
1085 if (tid_data
->ssn
!= tid_data
->next_reclaimed
) {
1086 tid_data
->state
= IWL_EMPTYING_HW_QUEUE_DELBA
;
1091 tid_data
->ssn
= 0xffff;
1092 tid_data
->state
= IWL_AGG_OFF
;
1093 spin_unlock_bh(&mvmsta
->lock
);
1095 ieee80211_stop_tx_ba_cb_irqsafe(vif
, sta
->addr
, tid
);
1097 iwl_mvm_sta_tx_agg(mvm
, sta
, tid
, txq_id
, false);
1099 iwl_mvm_disable_txq(mvm
, txq_id
,
1100 vif
->hw_queue
[tid_to_mac80211_ac
[tid
]], tid
,
1103 case IWL_AGG_STARTING
:
1104 case IWL_EMPTYING_HW_QUEUE_ADDBA
:
1106 * The agg session has been stopped before it was set up. This
1107 * can happen when the AddBA timer times out for example.
1110 /* No barriers since we are under mutex */
1111 lockdep_assert_held(&mvm
->mutex
);
1113 ieee80211_stop_tx_ba_cb_irqsafe(vif
, sta
->addr
, tid
);
1114 tid_data
->state
= IWL_AGG_OFF
;
1119 "Stopping AGG while state not ON or starting for %d on %d (%d)\n",
1120 mvmsta
->sta_id
, tid
, tid_data
->state
);
1122 "\ttid_data->txq_id = %d\n", tid_data
->txq_id
);
1126 spin_unlock_bh(&mvmsta
->lock
);
1131 int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
,
1132 struct ieee80211_sta
*sta
, u16 tid
)
1134 struct iwl_mvm_sta
*mvmsta
= iwl_mvm_sta_from_mac80211(sta
);
1135 struct iwl_mvm_tid_data
*tid_data
= &mvmsta
->tid_data
[tid
];
1137 enum iwl_mvm_agg_state old_state
;
1140 * First set the agg state to OFF to avoid calling
1141 * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty.
1143 spin_lock_bh(&mvmsta
->lock
);
1144 txq_id
= tid_data
->txq_id
;
1145 IWL_DEBUG_TX_QUEUES(mvm
, "Flush AGG: sta %d tid %d q %d state %d\n",
1146 mvmsta
->sta_id
, tid
, txq_id
, tid_data
->state
);
1147 old_state
= tid_data
->state
;
1148 tid_data
->state
= IWL_AGG_OFF
;
1149 mvmsta
->agg_tids
&= ~BIT(tid
);
1150 spin_unlock_bh(&mvmsta
->lock
);
1152 /* No need to mark as reserved */
1153 spin_lock_bh(&mvm
->queue_info_lock
);
1154 mvm
->queue_info
[txq_id
].setup_reserved
= false;
1155 spin_unlock_bh(&mvm
->queue_info_lock
);
1157 if (old_state
>= IWL_AGG_ON
) {
1158 iwl_mvm_drain_sta(mvm
, mvmsta
, true);
1159 if (iwl_mvm_flush_tx_path(mvm
, BIT(txq_id
), 0))
1160 IWL_ERR(mvm
, "Couldn't flush the AGG queue\n");
1161 iwl_trans_wait_tx_queue_empty(mvm
->trans
,
1162 mvmsta
->tfd_queue_msk
);
1163 iwl_mvm_drain_sta(mvm
, mvmsta
, false);
1165 iwl_mvm_sta_tx_agg(mvm
, sta
, tid
, txq_id
, false);
1167 iwl_mvm_disable_txq(mvm
, tid_data
->txq_id
,
1168 vif
->hw_queue
[tid_to_mac80211_ac
[tid
]], tid
,
1175 static int iwl_mvm_set_fw_key_idx(struct iwl_mvm
*mvm
)
1177 int i
, max
= -1, max_offs
= -1;
1179 lockdep_assert_held(&mvm
->mutex
);
1181 /* Pick the unused key offset with the highest 'deleted'
1182 * counter. Every time a key is deleted, all the counters
1183 * are incremented and the one that was just deleted is
1184 * reset to zero. Thus, the highest counter is the one
1185 * that was deleted longest ago. Pick that one.
1187 for (i
= 0; i
< STA_KEY_MAX_NUM
; i
++) {
1188 if (test_bit(i
, mvm
->fw_key_table
))
1190 if (mvm
->fw_key_deleted
[i
] > max
) {
1191 max
= mvm
->fw_key_deleted
[i
];
1197 return STA_KEY_IDX_INVALID
;
1199 __set_bit(max_offs
, mvm
->fw_key_table
);
1204 static u8
iwl_mvm_get_key_sta_id(struct iwl_mvm
*mvm
,
1205 struct ieee80211_vif
*vif
,
1206 struct ieee80211_sta
*sta
)
1208 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
1211 struct iwl_mvm_sta
*mvm_sta
= iwl_mvm_sta_from_mac80211(sta
);
1213 return mvm_sta
->sta_id
;
1217 * The device expects GTKs for station interfaces to be
1218 * installed as GTKs for the AP station. If we have no
1219 * station ID, then use AP's station ID.
1221 if (vif
->type
== NL80211_IFTYPE_STATION
&&
1222 mvmvif
->ap_sta_id
!= IWL_MVM_STATION_COUNT
) {
1223 u8 sta_id
= mvmvif
->ap_sta_id
;
1225 sta
= rcu_dereference_protected(mvm
->fw_id_to_mac_id
[sta_id
],
1226 lockdep_is_held(&mvm
->mutex
));
1228 * It is possible that the 'sta' parameter is NULL,
1229 * for example when a GTK is removed - the sta_id will then
1230 * be the AP ID, and no station was passed by mac80211.
1232 if (IS_ERR_OR_NULL(sta
))
1233 return IWL_MVM_STATION_COUNT
;
1238 return IWL_MVM_STATION_COUNT
;
1241 static int iwl_mvm_send_sta_key(struct iwl_mvm
*mvm
,
1242 struct iwl_mvm_sta
*mvm_sta
,
1243 struct ieee80211_key_conf
*keyconf
, bool mcast
,
1244 u32 tkip_iv32
, u16
*tkip_p1k
, u32 cmd_flags
,
1247 struct iwl_mvm_add_sta_key_cmd cmd
= {};
1253 u8 sta_id
= mvm_sta
->sta_id
;
1255 keyidx
= (keyconf
->keyidx
<< STA_KEY_FLG_KEYID_POS
) &
1256 STA_KEY_FLG_KEYID_MSK
;
1257 key_flags
= cpu_to_le16(keyidx
);
1258 key_flags
|= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP
);
1260 switch (keyconf
->cipher
) {
1261 case WLAN_CIPHER_SUITE_TKIP
:
1262 key_flags
|= cpu_to_le16(STA_KEY_FLG_TKIP
);
1263 cmd
.tkip_rx_tsc_byte2
= tkip_iv32
;
1264 for (i
= 0; i
< 5; i
++)
1265 cmd
.tkip_rx_ttak
[i
] = cpu_to_le16(tkip_p1k
[i
]);
1266 memcpy(cmd
.key
, keyconf
->key
, keyconf
->keylen
);
1268 case WLAN_CIPHER_SUITE_CCMP
:
1269 key_flags
|= cpu_to_le16(STA_KEY_FLG_CCM
);
1270 memcpy(cmd
.key
, keyconf
->key
, keyconf
->keylen
);
1272 case WLAN_CIPHER_SUITE_WEP104
:
1273 key_flags
|= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES
);
1275 case WLAN_CIPHER_SUITE_WEP40
:
1276 key_flags
|= cpu_to_le16(STA_KEY_FLG_WEP
);
1277 memcpy(cmd
.key
+ 3, keyconf
->key
, keyconf
->keylen
);
1280 key_flags
|= cpu_to_le16(STA_KEY_FLG_EXT
);
1281 memcpy(cmd
.key
, keyconf
->key
, keyconf
->keylen
);
1285 key_flags
|= cpu_to_le16(STA_KEY_MULTICAST
);
1287 cmd
.key_offset
= key_offset
;
1288 cmd
.key_flags
= key_flags
;
1289 cmd
.sta_id
= sta_id
;
1291 status
= ADD_STA_SUCCESS
;
1292 if (cmd_flags
& CMD_ASYNC
)
1293 ret
= iwl_mvm_send_cmd_pdu(mvm
, ADD_STA_KEY
, CMD_ASYNC
,
1296 ret
= iwl_mvm_send_cmd_pdu_status(mvm
, ADD_STA_KEY
, sizeof(cmd
),
1300 case ADD_STA_SUCCESS
:
1301 IWL_DEBUG_WEP(mvm
, "MODIFY_STA: set dynamic key passed\n");
1305 IWL_ERR(mvm
, "MODIFY_STA: set dynamic key failed\n");
1312 static int iwl_mvm_send_sta_igtk(struct iwl_mvm
*mvm
,
1313 struct ieee80211_key_conf
*keyconf
,
1314 u8 sta_id
, bool remove_key
)
1316 struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd
= {};
1318 /* verify the key details match the required command's expectations */
1319 if (WARN_ON((keyconf
->cipher
!= WLAN_CIPHER_SUITE_AES_CMAC
) ||
1320 (keyconf
->flags
& IEEE80211_KEY_FLAG_PAIRWISE
) ||
1321 (keyconf
->keyidx
!= 4 && keyconf
->keyidx
!= 5)))
1324 igtk_cmd
.key_id
= cpu_to_le32(keyconf
->keyidx
);
1325 igtk_cmd
.sta_id
= cpu_to_le32(sta_id
);
1328 igtk_cmd
.ctrl_flags
|= cpu_to_le32(STA_KEY_NOT_VALID
);
1330 struct ieee80211_key_seq seq
;
1333 memcpy(igtk_cmd
.IGTK
, keyconf
->key
, keyconf
->keylen
);
1334 ieee80211_get_key_rx_seq(keyconf
, 0, &seq
);
1335 pn
= seq
.aes_cmac
.pn
;
1336 igtk_cmd
.receive_seq_cnt
= cpu_to_le64(((u64
) pn
[5] << 0) |
1337 ((u64
) pn
[4] << 8) |
1338 ((u64
) pn
[3] << 16) |
1339 ((u64
) pn
[2] << 24) |
1340 ((u64
) pn
[1] << 32) |
1341 ((u64
) pn
[0] << 40));
1344 IWL_DEBUG_INFO(mvm
, "%s igtk for sta %u\n",
1345 remove_key
? "removing" : "installing",
1348 return iwl_mvm_send_cmd_pdu(mvm
, MGMT_MCAST_KEY
, 0,
1349 sizeof(igtk_cmd
), &igtk_cmd
);
1353 static inline u8
*iwl_mvm_get_mac_addr(struct iwl_mvm
*mvm
,
1354 struct ieee80211_vif
*vif
,
1355 struct ieee80211_sta
*sta
)
1357 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
1362 if (vif
->type
== NL80211_IFTYPE_STATION
&&
1363 mvmvif
->ap_sta_id
!= IWL_MVM_STATION_COUNT
) {
1364 u8 sta_id
= mvmvif
->ap_sta_id
;
1365 sta
= rcu_dereference_protected(mvm
->fw_id_to_mac_id
[sta_id
],
1366 lockdep_is_held(&mvm
->mutex
));
1374 static int __iwl_mvm_set_sta_key(struct iwl_mvm
*mvm
,
1375 struct ieee80211_vif
*vif
,
1376 struct ieee80211_sta
*sta
,
1377 struct ieee80211_key_conf
*keyconf
,
1381 struct iwl_mvm_sta
*mvm_sta
= iwl_mvm_sta_from_mac80211(sta
);
1384 struct ieee80211_key_seq seq
;
1387 switch (keyconf
->cipher
) {
1388 case WLAN_CIPHER_SUITE_TKIP
:
1389 addr
= iwl_mvm_get_mac_addr(mvm
, vif
, sta
);
1390 /* get phase 1 key from mac80211 */
1391 ieee80211_get_key_rx_seq(keyconf
, 0, &seq
);
1392 ieee80211_get_tkip_rx_p1k(keyconf
, addr
, seq
.tkip
.iv32
, p1k
);
1393 ret
= iwl_mvm_send_sta_key(mvm
, mvm_sta
, keyconf
, mcast
,
1394 seq
.tkip
.iv32
, p1k
, 0, key_offset
);
1396 case WLAN_CIPHER_SUITE_CCMP
:
1397 case WLAN_CIPHER_SUITE_WEP40
:
1398 case WLAN_CIPHER_SUITE_WEP104
:
1399 ret
= iwl_mvm_send_sta_key(mvm
, mvm_sta
, keyconf
, mcast
,
1400 0, NULL
, 0, key_offset
);
1403 ret
= iwl_mvm_send_sta_key(mvm
, mvm_sta
, keyconf
, mcast
,
1404 0, NULL
, 0, key_offset
);
1410 static int __iwl_mvm_remove_sta_key(struct iwl_mvm
*mvm
, u8 sta_id
,
1411 struct ieee80211_key_conf
*keyconf
,
1414 struct iwl_mvm_add_sta_key_cmd cmd
= {};
1419 key_flags
= cpu_to_le16((keyconf
->keyidx
<< STA_KEY_FLG_KEYID_POS
) &
1420 STA_KEY_FLG_KEYID_MSK
);
1421 key_flags
|= cpu_to_le16(STA_KEY_FLG_NO_ENC
| STA_KEY_FLG_WEP_KEY_MAP
);
1422 key_flags
|= cpu_to_le16(STA_KEY_NOT_VALID
);
1425 key_flags
|= cpu_to_le16(STA_KEY_MULTICAST
);
1427 cmd
.key_flags
= key_flags
;
1428 cmd
.key_offset
= keyconf
->hw_key_idx
;
1429 cmd
.sta_id
= sta_id
;
1431 status
= ADD_STA_SUCCESS
;
1432 ret
= iwl_mvm_send_cmd_pdu_status(mvm
, ADD_STA_KEY
, sizeof(cmd
),
1436 case ADD_STA_SUCCESS
:
1437 IWL_DEBUG_WEP(mvm
, "MODIFY_STA: remove sta key passed\n");
1441 IWL_ERR(mvm
, "MODIFY_STA: remove sta key failed\n");
1448 int iwl_mvm_set_sta_key(struct iwl_mvm
*mvm
,
1449 struct ieee80211_vif
*vif
,
1450 struct ieee80211_sta
*sta
,
1451 struct ieee80211_key_conf
*keyconf
,
1454 bool mcast
= !(keyconf
->flags
& IEEE80211_KEY_FLAG_PAIRWISE
);
1457 static const u8 __maybe_unused zero_addr
[ETH_ALEN
] = {0};
1459 lockdep_assert_held(&mvm
->mutex
);
1461 /* Get the station id from the mvm local station table */
1462 sta_id
= iwl_mvm_get_key_sta_id(mvm
, vif
, sta
);
1463 if (sta_id
== IWL_MVM_STATION_COUNT
) {
1464 IWL_ERR(mvm
, "Failed to find station id\n");
1468 if (keyconf
->cipher
== WLAN_CIPHER_SUITE_AES_CMAC
) {
1469 ret
= iwl_mvm_send_sta_igtk(mvm
, keyconf
, sta_id
, false);
1474 * It is possible that the 'sta' parameter is NULL, and thus
1475 * there is a need to retrieve the sta from the local station table.
1478 sta
= rcu_dereference_protected(mvm
->fw_id_to_mac_id
[sta_id
],
1479 lockdep_is_held(&mvm
->mutex
));
1480 if (IS_ERR_OR_NULL(sta
)) {
1481 IWL_ERR(mvm
, "Invalid station id\n");
1486 if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta
)->vif
!= vif
))
1489 /* If the key_offset is not pre-assigned, we need to find a
1490 * new offset to use. In normal cases, the offset is not
1491 * pre-assigned, but during HW_RESTART we want to reuse the
1492 * same indices, so we pass them when this function is called.
1494 * In D3 entry, we need to hardcoded the indices (because the
1495 * firmware hardcodes the PTK offset to 0). In this case, we
1496 * need to make sure we don't overwrite the hw_key_idx in the
1497 * keyconf structure, because otherwise we cannot configure
1498 * the original ones back when resuming.
1500 if (key_offset
== STA_KEY_IDX_INVALID
) {
1501 key_offset
= iwl_mvm_set_fw_key_idx(mvm
);
1502 if (key_offset
== STA_KEY_IDX_INVALID
)
1504 keyconf
->hw_key_idx
= key_offset
;
1507 ret
= __iwl_mvm_set_sta_key(mvm
, vif
, sta
, keyconf
, key_offset
, mcast
);
1509 __clear_bit(keyconf
->hw_key_idx
, mvm
->fw_key_table
);
1514 * For WEP, the same key is used for multicast and unicast. Upload it
1515 * again, using the same key offset, and now pointing the other one
1516 * to the same key slot (offset).
1517 * If this fails, remove the original as well.
1519 if (keyconf
->cipher
== WLAN_CIPHER_SUITE_WEP40
||
1520 keyconf
->cipher
== WLAN_CIPHER_SUITE_WEP104
) {
1521 ret
= __iwl_mvm_set_sta_key(mvm
, vif
, sta
, keyconf
,
1522 key_offset
, !mcast
);
1524 __clear_bit(keyconf
->hw_key_idx
, mvm
->fw_key_table
);
1525 __iwl_mvm_remove_sta_key(mvm
, sta_id
, keyconf
, mcast
);
1530 IWL_DEBUG_WEP(mvm
, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n",
1531 keyconf
->cipher
, keyconf
->keylen
, keyconf
->keyidx
,
1532 sta
? sta
->addr
: zero_addr
, ret
);
1536 int iwl_mvm_remove_sta_key(struct iwl_mvm
*mvm
,
1537 struct ieee80211_vif
*vif
,
1538 struct ieee80211_sta
*sta
,
1539 struct ieee80211_key_conf
*keyconf
)
1541 bool mcast
= !(keyconf
->flags
& IEEE80211_KEY_FLAG_PAIRWISE
);
1545 lockdep_assert_held(&mvm
->mutex
);
1547 /* Get the station id from the mvm local station table */
1548 sta_id
= iwl_mvm_get_key_sta_id(mvm
, vif
, sta
);
1550 IWL_DEBUG_WEP(mvm
, "mvm remove dynamic key: idx=%d sta=%d\n",
1551 keyconf
->keyidx
, sta_id
);
1553 if (keyconf
->cipher
== WLAN_CIPHER_SUITE_AES_CMAC
)
1554 return iwl_mvm_send_sta_igtk(mvm
, keyconf
, sta_id
, true);
1556 if (!__test_and_clear_bit(keyconf
->hw_key_idx
, mvm
->fw_key_table
)) {
1557 IWL_ERR(mvm
, "offset %d not used in fw key table.\n",
1558 keyconf
->hw_key_idx
);
1562 /* track which key was deleted last */
1563 for (i
= 0; i
< STA_KEY_MAX_NUM
; i
++) {
1564 if (mvm
->fw_key_deleted
[i
] < U8_MAX
)
1565 mvm
->fw_key_deleted
[i
]++;
1567 mvm
->fw_key_deleted
[keyconf
->hw_key_idx
] = 0;
1569 if (sta_id
== IWL_MVM_STATION_COUNT
) {
1570 IWL_DEBUG_WEP(mvm
, "station non-existent, early return.\n");
1574 ret
= __iwl_mvm_remove_sta_key(mvm
, sta_id
, keyconf
, mcast
);
1578 /* delete WEP key twice to get rid of (now useless) offset */
1579 if (keyconf
->cipher
== WLAN_CIPHER_SUITE_WEP40
||
1580 keyconf
->cipher
== WLAN_CIPHER_SUITE_WEP104
)
1581 ret
= __iwl_mvm_remove_sta_key(mvm
, sta_id
, keyconf
, !mcast
);
1586 void iwl_mvm_update_tkip_key(struct iwl_mvm
*mvm
,
1587 struct ieee80211_vif
*vif
,
1588 struct ieee80211_key_conf
*keyconf
,
1589 struct ieee80211_sta
*sta
, u32 iv32
,
1592 struct iwl_mvm_sta
*mvm_sta
;
1593 u8 sta_id
= iwl_mvm_get_key_sta_id(mvm
, vif
, sta
);
1594 bool mcast
= !(keyconf
->flags
& IEEE80211_KEY_FLAG_PAIRWISE
);
1596 if (WARN_ON_ONCE(sta_id
== IWL_MVM_STATION_COUNT
))
1602 sta
= rcu_dereference(mvm
->fw_id_to_mac_id
[sta_id
]);
1603 if (WARN_ON(IS_ERR_OR_NULL(sta
))) {
1609 mvm_sta
= iwl_mvm_sta_from_mac80211(sta
);
1610 iwl_mvm_send_sta_key(mvm
, mvm_sta
, keyconf
, mcast
,
1611 iv32
, phase1key
, CMD_ASYNC
, keyconf
->hw_key_idx
);
1615 void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm
*mvm
,
1616 struct ieee80211_sta
*sta
)
1618 struct iwl_mvm_sta
*mvmsta
= iwl_mvm_sta_from_mac80211(sta
);
1619 struct iwl_mvm_add_sta_cmd cmd
= {
1620 .add_modify
= STA_MODE_MODIFY
,
1621 .sta_id
= mvmsta
->sta_id
,
1622 .station_flags_msk
= cpu_to_le32(STA_FLG_PS
),
1623 .mac_id_n_color
= cpu_to_le32(mvmsta
->mac_id_n_color
),
1627 ret
= iwl_mvm_send_cmd_pdu(mvm
, ADD_STA
, CMD_ASYNC
, sizeof(cmd
), &cmd
);
1629 IWL_ERR(mvm
, "Failed to send ADD_STA command (%d)\n", ret
);
1632 void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm
*mvm
,
1633 struct ieee80211_sta
*sta
,
1634 enum ieee80211_frame_release_type reason
,
1635 u16 cnt
, u16 tids
, bool more_data
,
1638 struct iwl_mvm_sta
*mvmsta
= iwl_mvm_sta_from_mac80211(sta
);
1639 struct iwl_mvm_add_sta_cmd cmd
= {
1640 .add_modify
= STA_MODE_MODIFY
,
1641 .sta_id
= mvmsta
->sta_id
,
1642 .modify_mask
= STA_MODIFY_SLEEPING_STA_TX_COUNT
,
1643 .sleep_tx_count
= cpu_to_le16(cnt
),
1644 .mac_id_n_color
= cpu_to_le32(mvmsta
->mac_id_n_color
),
1647 unsigned long _tids
= tids
;
1649 /* convert TIDs to ACs - we don't support TSPEC so that's OK
1650 * Note that this field is reserved and unused by firmware not
1651 * supporting GO uAPSD, so it's safe to always do this.
1653 for_each_set_bit(tid
, &_tids
, IWL_MAX_TID_COUNT
)
1654 cmd
.awake_acs
|= BIT(tid_to_ucode_ac
[tid
]);
1656 /* If we're releasing frames from aggregation queues then check if the
1657 * all queues combined that we're releasing frames from have
1658 * - more frames than the service period, in which case more_data
1660 * - fewer than 'cnt' frames, in which case we need to adjust the
1661 * firmware command (but do that unconditionally)
1664 int remaining
= cnt
;
1666 spin_lock_bh(&mvmsta
->lock
);
1667 for_each_set_bit(tid
, &_tids
, IWL_MAX_TID_COUNT
) {
1668 struct iwl_mvm_tid_data
*tid_data
;
1671 tid_data
= &mvmsta
->tid_data
[tid
];
1672 if (WARN(tid_data
->state
!= IWL_AGG_ON
&&
1673 tid_data
->state
!= IWL_EMPTYING_HW_QUEUE_DELBA
,
1674 "TID %d state is %d\n",
1675 tid
, tid_data
->state
)) {
1676 spin_unlock_bh(&mvmsta
->lock
);
1677 ieee80211_sta_eosp(sta
);
1681 n_queued
= iwl_mvm_tid_queued(tid_data
);
1682 if (n_queued
> remaining
) {
1687 remaining
-= n_queued
;
1689 spin_unlock_bh(&mvmsta
->lock
);
1691 cmd
.sleep_tx_count
= cpu_to_le16(cnt
- remaining
);
1692 if (WARN_ON(cnt
- remaining
== 0)) {
1693 ieee80211_sta_eosp(sta
);
1698 /* Note: this is ignored by firmware not supporting GO uAPSD */
1700 cmd
.sleep_state_flags
|= cpu_to_le16(STA_SLEEP_STATE_MOREDATA
);
1702 if (reason
== IEEE80211_FRAME_RELEASE_PSPOLL
) {
1703 mvmsta
->next_status_eosp
= true;
1704 cmd
.sleep_state_flags
|= cpu_to_le16(STA_SLEEP_STATE_PS_POLL
);
1706 cmd
.sleep_state_flags
|= cpu_to_le16(STA_SLEEP_STATE_UAPSD
);
1709 ret
= iwl_mvm_send_cmd_pdu(mvm
, ADD_STA
, CMD_ASYNC
, sizeof(cmd
), &cmd
);
1711 IWL_ERR(mvm
, "Failed to send ADD_STA command (%d)\n", ret
);
1714 void iwl_mvm_rx_eosp_notif(struct iwl_mvm
*mvm
,
1715 struct iwl_rx_cmd_buffer
*rxb
)
1717 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
1718 struct iwl_mvm_eosp_notification
*notif
= (void *)pkt
->data
;
1719 struct ieee80211_sta
*sta
;
1720 u32 sta_id
= le32_to_cpu(notif
->sta_id
);
1722 if (WARN_ON_ONCE(sta_id
>= IWL_MVM_STATION_COUNT
))
1726 sta
= rcu_dereference(mvm
->fw_id_to_mac_id
[sta_id
]);
1727 if (!IS_ERR_OR_NULL(sta
))
1728 ieee80211_sta_eosp(sta
);
1732 void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm
*mvm
,
1733 struct iwl_mvm_sta
*mvmsta
, bool disable
)
1735 struct iwl_mvm_add_sta_cmd cmd
= {
1736 .add_modify
= STA_MODE_MODIFY
,
1737 .sta_id
= mvmsta
->sta_id
,
1738 .station_flags
= disable
? cpu_to_le32(STA_FLG_DISABLE_TX
) : 0,
1739 .station_flags_msk
= cpu_to_le32(STA_FLG_DISABLE_TX
),
1740 .mac_id_n_color
= cpu_to_le32(mvmsta
->mac_id_n_color
),
1744 ret
= iwl_mvm_send_cmd_pdu(mvm
, ADD_STA
, CMD_ASYNC
, sizeof(cmd
), &cmd
);
1746 IWL_ERR(mvm
, "Failed to send ADD_STA command (%d)\n", ret
);
1749 void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm
*mvm
,
1750 struct ieee80211_sta
*sta
,
1753 struct iwl_mvm_sta
*mvm_sta
= iwl_mvm_sta_from_mac80211(sta
);
1755 spin_lock_bh(&mvm_sta
->lock
);
1757 if (mvm_sta
->disable_tx
== disable
) {
1758 spin_unlock_bh(&mvm_sta
->lock
);
1762 mvm_sta
->disable_tx
= disable
;
1765 * Tell mac80211 to start/stop queuing tx for this station,
1766 * but don't stop queuing if there are still pending frames
1769 if (disable
|| !atomic_read(&mvm
->pending_frames
[mvm_sta
->sta_id
]))
1770 ieee80211_sta_block_awake(mvm
->hw
, sta
, disable
);
1772 iwl_mvm_sta_modify_disable_tx(mvm
, mvm_sta
, disable
);
1774 spin_unlock_bh(&mvm_sta
->lock
);
1777 void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm
*mvm
,
1778 struct iwl_mvm_vif
*mvmvif
,
1781 struct ieee80211_sta
*sta
;
1782 struct iwl_mvm_sta
*mvm_sta
;
1785 lockdep_assert_held(&mvm
->mutex
);
1787 /* Block/unblock all the stations of the given mvmvif */
1788 for (i
= 0; i
< IWL_MVM_STATION_COUNT
; i
++) {
1789 sta
= rcu_dereference_protected(mvm
->fw_id_to_mac_id
[i
],
1790 lockdep_is_held(&mvm
->mutex
));
1791 if (IS_ERR_OR_NULL(sta
))
1794 mvm_sta
= iwl_mvm_sta_from_mac80211(sta
);
1795 if (mvm_sta
->mac_id_n_color
!=
1796 FW_CMD_ID_AND_COLOR(mvmvif
->id
, mvmvif
->color
))
1799 iwl_mvm_sta_modify_disable_tx_ap(mvm
, sta
, disable
);
1803 void iwl_mvm_csa_client_absent(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
)
1805 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
1806 struct iwl_mvm_sta
*mvmsta
;
1810 mvmsta
= iwl_mvm_sta_from_staid_rcu(mvm
, mvmvif
->ap_sta_id
);
1812 if (!WARN_ON(!mvmsta
))
1813 iwl_mvm_sta_modify_disable_tx(mvm
, mvmsta
, true);