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 - 2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2014 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 - 2014 Intel Corporation. All rights reserved.
35 * Copyright(c) 2013 - 2014 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
= (void *)sta
->drv_priv
;
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 int iwl_mvm_add_sta(struct iwl_mvm
*mvm
,
208 struct ieee80211_vif
*vif
,
209 struct ieee80211_sta
*sta
)
211 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
212 struct iwl_mvm_sta
*mvm_sta
= (void *)sta
->drv_priv
;
215 lockdep_assert_held(&mvm
->mutex
);
217 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART
, &mvm
->status
))
218 sta_id
= iwl_mvm_find_free_sta_id(mvm
,
219 ieee80211_vif_type_p2p(vif
));
221 sta_id
= mvm_sta
->sta_id
;
223 if (WARN_ON_ONCE(sta_id
== IWL_MVM_STATION_COUNT
))
226 spin_lock_init(&mvm_sta
->lock
);
228 mvm_sta
->sta_id
= sta_id
;
229 mvm_sta
->mac_id_n_color
= FW_CMD_ID_AND_COLOR(mvmvif
->id
,
232 mvm_sta
->max_agg_bufsize
= LINK_QUAL_AGG_FRAME_LIMIT_DEF
;
233 mvm_sta
->tx_protection
= 0;
234 mvm_sta
->tt_tx_protection
= false;
236 /* HW restart, don't assume the memory has been zeroed */
237 atomic_set(&mvm
->pending_frames
[sta_id
], 0);
238 mvm_sta
->tid_disable_agg
= 0;
239 mvm_sta
->tfd_queue_msk
= 0;
240 for (i
= 0; i
< IEEE80211_NUM_ACS
; i
++)
241 if (vif
->hw_queue
[i
] != IEEE80211_INVAL_HW_QUEUE
)
242 mvm_sta
->tfd_queue_msk
|= BIT(vif
->hw_queue
[i
]);
244 /* for HW restart - reset everything but the sequence number */
245 for (i
= 0; i
< IWL_MAX_TID_COUNT
; i
++) {
246 u16 seq
= mvm_sta
->tid_data
[i
].seq_number
;
247 memset(&mvm_sta
->tid_data
[i
], 0, sizeof(mvm_sta
->tid_data
[i
]));
248 mvm_sta
->tid_data
[i
].seq_number
= seq
;
251 ret
= iwl_mvm_sta_send_to_fw(mvm
, sta
, false);
255 if (vif
->type
== NL80211_IFTYPE_STATION
) {
257 WARN_ON(mvmvif
->ap_sta_id
!= IWL_MVM_STATION_COUNT
);
258 mvmvif
->ap_sta_id
= sta_id
;
260 WARN_ON(mvmvif
->ap_sta_id
== IWL_MVM_STATION_COUNT
);
264 rcu_assign_pointer(mvm
->fw_id_to_mac_id
[sta_id
], sta
);
269 int iwl_mvm_update_sta(struct iwl_mvm
*mvm
,
270 struct ieee80211_vif
*vif
,
271 struct ieee80211_sta
*sta
)
273 return iwl_mvm_sta_send_to_fw(mvm
, sta
, true);
276 int iwl_mvm_drain_sta(struct iwl_mvm
*mvm
, struct iwl_mvm_sta
*mvmsta
,
279 struct iwl_mvm_add_sta_cmd cmd
= {};
283 lockdep_assert_held(&mvm
->mutex
);
285 cmd
.mac_id_n_color
= cpu_to_le32(mvmsta
->mac_id_n_color
);
286 cmd
.sta_id
= mvmsta
->sta_id
;
287 cmd
.add_modify
= STA_MODE_MODIFY
;
288 cmd
.station_flags
= drain
? cpu_to_le32(STA_FLG_DRAIN_FLOW
) : 0;
289 cmd
.station_flags_msk
= cpu_to_le32(STA_FLG_DRAIN_FLOW
);
291 status
= ADD_STA_SUCCESS
;
292 ret
= iwl_mvm_send_cmd_pdu_status(mvm
, ADD_STA
, sizeof(cmd
),
298 case ADD_STA_SUCCESS
:
299 IWL_DEBUG_INFO(mvm
, "Frames for staid %d will drained in fw\n",
304 IWL_ERR(mvm
, "Couldn't drain frames for staid %d\n",
313 * Remove a station from the FW table. Before sending the command to remove
314 * the station validate that the station is indeed known to the driver (sanity
317 static int iwl_mvm_rm_sta_common(struct iwl_mvm
*mvm
, u8 sta_id
)
319 struct ieee80211_sta
*sta
;
320 struct iwl_mvm_rm_sta_cmd rm_sta_cmd
= {
325 sta
= rcu_dereference_protected(mvm
->fw_id_to_mac_id
[sta_id
],
326 lockdep_is_held(&mvm
->mutex
));
328 /* Note: internal stations are marked as error values */
330 IWL_ERR(mvm
, "Invalid station id\n");
334 ret
= iwl_mvm_send_cmd_pdu(mvm
, REMOVE_STA
, 0,
335 sizeof(rm_sta_cmd
), &rm_sta_cmd
);
337 IWL_ERR(mvm
, "Failed to remove station. Id=%d\n", sta_id
);
344 void iwl_mvm_sta_drained_wk(struct work_struct
*wk
)
346 struct iwl_mvm
*mvm
= container_of(wk
, struct iwl_mvm
, sta_drained_wk
);
350 * The mutex is needed because of the SYNC cmd, but not only: if the
351 * work would run concurrently with iwl_mvm_rm_sta, it would run before
352 * iwl_mvm_rm_sta sets the station as busy, and exit. Then
353 * iwl_mvm_rm_sta would set the station as busy, and nobody will clean
356 mutex_lock(&mvm
->mutex
);
358 for_each_set_bit(sta_id
, mvm
->sta_drained
, IWL_MVM_STATION_COUNT
) {
360 struct ieee80211_sta
*sta
=
361 rcu_dereference_protected(mvm
->fw_id_to_mac_id
[sta_id
],
362 lockdep_is_held(&mvm
->mutex
));
365 * This station is in use or RCU-removed; the latter happens in
366 * managed mode, where mac80211 removes the station before we
367 * can remove it from firmware (we can only do that after the
368 * MAC is marked unassociated), and possibly while the deauth
369 * frame to disconnect from the AP is still queued. Then, the
370 * station pointer is -ENOENT when the last skb is reclaimed.
372 if (!IS_ERR(sta
) || PTR_ERR(sta
) == -ENOENT
)
375 if (PTR_ERR(sta
) == -EINVAL
) {
376 IWL_ERR(mvm
, "Drained sta %d, but it is internal?\n",
382 IWL_ERR(mvm
, "Drained sta %d, but it was NULL?\n",
387 WARN_ON(PTR_ERR(sta
) != -EBUSY
);
388 /* This station was removed and we waited until it got drained,
389 * we can now proceed and remove it.
391 ret
= iwl_mvm_rm_sta_common(mvm
, sta_id
);
394 "Couldn't remove sta %d after it was drained\n",
398 RCU_INIT_POINTER(mvm
->fw_id_to_mac_id
[sta_id
], NULL
);
399 clear_bit(sta_id
, mvm
->sta_drained
);
402 mutex_unlock(&mvm
->mutex
);
405 int iwl_mvm_rm_sta(struct iwl_mvm
*mvm
,
406 struct ieee80211_vif
*vif
,
407 struct ieee80211_sta
*sta
)
409 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
410 struct iwl_mvm_sta
*mvm_sta
= (void *)sta
->drv_priv
;
413 lockdep_assert_held(&mvm
->mutex
);
415 if (vif
->type
== NL80211_IFTYPE_STATION
&&
416 mvmvif
->ap_sta_id
== mvm_sta
->sta_id
) {
417 /* flush its queues here since we are freeing mvm_sta */
418 ret
= iwl_mvm_flush_tx_path(mvm
, mvm_sta
->tfd_queue_msk
, true);
420 /* if we are associated - we can't remove the AP STA now */
421 if (vif
->bss_conf
.assoc
)
424 /* unassoc - go ahead - remove the AP STA now */
425 mvmvif
->ap_sta_id
= IWL_MVM_STATION_COUNT
;
427 /* clear d0i3_ap_sta_id if no longer relevant */
428 if (mvm
->d0i3_ap_sta_id
== mvm_sta
->sta_id
)
429 mvm
->d0i3_ap_sta_id
= IWL_MVM_STATION_COUNT
;
433 * Make sure that the tx response code sees the station as -EBUSY and
434 * calls the drain worker.
436 spin_lock_bh(&mvm_sta
->lock
);
438 * There are frames pending on the AC queues for this station.
439 * We need to wait until all the frames are drained...
441 if (atomic_read(&mvm
->pending_frames
[mvm_sta
->sta_id
])) {
442 rcu_assign_pointer(mvm
->fw_id_to_mac_id
[mvm_sta
->sta_id
],
444 spin_unlock_bh(&mvm_sta
->lock
);
445 ret
= iwl_mvm_drain_sta(mvm
, mvm_sta
, true);
447 spin_unlock_bh(&mvm_sta
->lock
);
448 ret
= iwl_mvm_rm_sta_common(mvm
, mvm_sta
->sta_id
);
449 RCU_INIT_POINTER(mvm
->fw_id_to_mac_id
[mvm_sta
->sta_id
], NULL
);
455 int iwl_mvm_rm_sta_id(struct iwl_mvm
*mvm
,
456 struct ieee80211_vif
*vif
,
459 int ret
= iwl_mvm_rm_sta_common(mvm
, sta_id
);
461 lockdep_assert_held(&mvm
->mutex
);
463 RCU_INIT_POINTER(mvm
->fw_id_to_mac_id
[sta_id
], NULL
);
467 int iwl_mvm_allocate_int_sta(struct iwl_mvm
*mvm
, struct iwl_mvm_int_sta
*sta
,
468 u32 qmask
, enum nl80211_iftype iftype
)
470 if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART
, &mvm
->status
)) {
471 sta
->sta_id
= iwl_mvm_find_free_sta_id(mvm
, iftype
);
472 if (WARN_ON_ONCE(sta
->sta_id
== IWL_MVM_STATION_COUNT
))
476 sta
->tfd_queue_msk
= qmask
;
478 /* put a non-NULL value so iterating over the stations won't stop */
479 rcu_assign_pointer(mvm
->fw_id_to_mac_id
[sta
->sta_id
], ERR_PTR(-EINVAL
));
483 void iwl_mvm_dealloc_int_sta(struct iwl_mvm
*mvm
, struct iwl_mvm_int_sta
*sta
)
485 RCU_INIT_POINTER(mvm
->fw_id_to_mac_id
[sta
->sta_id
], NULL
);
486 memset(sta
, 0, sizeof(struct iwl_mvm_int_sta
));
487 sta
->sta_id
= IWL_MVM_STATION_COUNT
;
490 static int iwl_mvm_add_int_sta_common(struct iwl_mvm
*mvm
,
491 struct iwl_mvm_int_sta
*sta
,
493 u16 mac_id
, u16 color
)
495 struct iwl_mvm_add_sta_cmd cmd
;
499 lockdep_assert_held(&mvm
->mutex
);
501 memset(&cmd
, 0, sizeof(cmd
));
502 cmd
.sta_id
= sta
->sta_id
;
503 cmd
.mac_id_n_color
= cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id
,
506 cmd
.tfd_queue_msk
= cpu_to_le32(sta
->tfd_queue_msk
);
509 memcpy(cmd
.addr
, addr
, ETH_ALEN
);
511 ret
= iwl_mvm_send_cmd_pdu_status(mvm
, ADD_STA
, sizeof(cmd
),
517 case ADD_STA_SUCCESS
:
518 IWL_DEBUG_INFO(mvm
, "Internal station added.\n");
522 IWL_ERR(mvm
, "Add internal station failed, status=0x%x\n",
529 int iwl_mvm_add_aux_sta(struct iwl_mvm
*mvm
)
533 lockdep_assert_held(&mvm
->mutex
);
535 /* Map Aux queue to fifo - needs to happen before adding Aux station */
536 iwl_trans_ac_txq_enable(mvm
->trans
, mvm
->aux_queue
,
537 IWL_MVM_TX_FIFO_MCAST
);
539 /* Allocate aux station and assign to it the aux queue */
540 ret
= iwl_mvm_allocate_int_sta(mvm
, &mvm
->aux_sta
, BIT(mvm
->aux_queue
),
541 NL80211_IFTYPE_UNSPECIFIED
);
545 ret
= iwl_mvm_add_int_sta_common(mvm
, &mvm
->aux_sta
, NULL
,
549 iwl_mvm_dealloc_int_sta(mvm
, &mvm
->aux_sta
);
554 * Send the add station command for the vif's broadcast station.
555 * Assumes that the station was already allocated.
557 * @mvm: the mvm component
558 * @vif: the interface to which the broadcast station is added
559 * @bsta: the broadcast station to add.
561 int iwl_mvm_send_add_bcast_sta(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
)
563 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
564 struct iwl_mvm_int_sta
*bsta
= &mvmvif
->bcast_sta
;
565 static const u8 _baddr
[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
566 const u8
*baddr
= _baddr
;
568 lockdep_assert_held(&mvm
->mutex
);
570 if (vif
->type
== NL80211_IFTYPE_ADHOC
)
571 baddr
= vif
->bss_conf
.bssid
;
573 if (WARN_ON_ONCE(bsta
->sta_id
== IWL_MVM_STATION_COUNT
))
576 return iwl_mvm_add_int_sta_common(mvm
, bsta
, baddr
,
577 mvmvif
->id
, mvmvif
->color
);
580 /* Send the FW a request to remove the station from it's internal data
581 * structures, but DO NOT remove the entry from the local data structures. */
582 int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
)
584 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
587 lockdep_assert_held(&mvm
->mutex
);
589 ret
= iwl_mvm_rm_sta_common(mvm
, mvmvif
->bcast_sta
.sta_id
);
591 IWL_WARN(mvm
, "Failed sending remove station\n");
595 int iwl_mvm_alloc_bcast_sta(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
)
597 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
600 lockdep_assert_held(&mvm
->mutex
);
602 qmask
= iwl_mvm_mac_get_queues_mask(mvm
, vif
);
605 * The firmware defines the TFD queue mask to only be relevant
606 * for *unicast* queues, so the multicast (CAB) queue shouldn't
609 if (vif
->type
== NL80211_IFTYPE_AP
)
610 qmask
&= ~BIT(vif
->cab_queue
);
612 return iwl_mvm_allocate_int_sta(mvm
, &mvmvif
->bcast_sta
, qmask
,
613 ieee80211_vif_type_p2p(vif
));
616 /* Allocate a new station entry for the broadcast station to the given vif,
617 * and send it to the FW.
618 * Note that each P2P mac should have its own broadcast station.
620 * @mvm: the mvm component
621 * @vif: the interface to which the broadcast station is added
622 * @bsta: the broadcast station to add. */
623 int iwl_mvm_add_bcast_sta(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
)
625 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
626 struct iwl_mvm_int_sta
*bsta
= &mvmvif
->bcast_sta
;
629 lockdep_assert_held(&mvm
->mutex
);
631 ret
= iwl_mvm_alloc_bcast_sta(mvm
, vif
);
635 ret
= iwl_mvm_send_add_bcast_sta(mvm
, vif
);
638 iwl_mvm_dealloc_int_sta(mvm
, bsta
);
643 void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
)
645 struct iwl_mvm_vif
*mvmvif
= iwl_mvm_vif_from_mac80211(vif
);
647 iwl_mvm_dealloc_int_sta(mvm
, &mvmvif
->bcast_sta
);
651 * Send the FW a request to remove the station from it's internal data
652 * structures, and in addition remove it from the local data structure.
654 int iwl_mvm_rm_bcast_sta(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
)
658 lockdep_assert_held(&mvm
->mutex
);
660 ret
= iwl_mvm_send_rm_bcast_sta(mvm
, vif
);
662 iwl_mvm_dealloc_bcast_sta(mvm
, vif
);
667 #define IWL_MAX_RX_BA_SESSIONS 16
669 int iwl_mvm_sta_rx_agg(struct iwl_mvm
*mvm
, struct ieee80211_sta
*sta
,
670 int tid
, u16 ssn
, bool start
)
672 struct iwl_mvm_sta
*mvm_sta
= (void *)sta
->drv_priv
;
673 struct iwl_mvm_add_sta_cmd cmd
= {};
677 lockdep_assert_held(&mvm
->mutex
);
679 if (start
&& mvm
->rx_ba_sessions
>= IWL_MAX_RX_BA_SESSIONS
) {
680 IWL_WARN(mvm
, "Not enough RX BA SESSIONS\n");
684 cmd
.mac_id_n_color
= cpu_to_le32(mvm_sta
->mac_id_n_color
);
685 cmd
.sta_id
= mvm_sta
->sta_id
;
686 cmd
.add_modify
= STA_MODE_MODIFY
;
688 cmd
.add_immediate_ba_tid
= (u8
) tid
;
689 cmd
.add_immediate_ba_ssn
= cpu_to_le16(ssn
);
691 cmd
.remove_immediate_ba_tid
= (u8
) tid
;
693 cmd
.modify_mask
= start
? STA_MODIFY_ADD_BA_TID
:
694 STA_MODIFY_REMOVE_BA_TID
;
696 status
= ADD_STA_SUCCESS
;
697 ret
= iwl_mvm_send_cmd_pdu_status(mvm
, ADD_STA
, sizeof(cmd
),
703 case ADD_STA_SUCCESS
:
704 IWL_DEBUG_INFO(mvm
, "RX BA Session %sed in fw\n",
705 start
? "start" : "stopp");
707 case ADD_STA_IMMEDIATE_BA_FAILURE
:
708 IWL_WARN(mvm
, "RX BA Session refused by fw\n");
713 IWL_ERR(mvm
, "RX BA Session failed %sing, status 0x%x\n",
714 start
? "start" : "stopp", status
);
720 mvm
->rx_ba_sessions
++;
721 else if (mvm
->rx_ba_sessions
> 0)
722 /* check that restart flow didn't zero the counter */
723 mvm
->rx_ba_sessions
--;
729 static int iwl_mvm_sta_tx_agg(struct iwl_mvm
*mvm
, struct ieee80211_sta
*sta
,
730 int tid
, u8 queue
, bool start
)
732 struct iwl_mvm_sta
*mvm_sta
= (void *)sta
->drv_priv
;
733 struct iwl_mvm_add_sta_cmd cmd
= {};
737 lockdep_assert_held(&mvm
->mutex
);
740 mvm_sta
->tfd_queue_msk
|= BIT(queue
);
741 mvm_sta
->tid_disable_agg
&= ~BIT(tid
);
743 mvm_sta
->tfd_queue_msk
&= ~BIT(queue
);
744 mvm_sta
->tid_disable_agg
|= BIT(tid
);
747 cmd
.mac_id_n_color
= cpu_to_le32(mvm_sta
->mac_id_n_color
);
748 cmd
.sta_id
= mvm_sta
->sta_id
;
749 cmd
.add_modify
= STA_MODE_MODIFY
;
750 cmd
.modify_mask
= STA_MODIFY_QUEUES
| STA_MODIFY_TID_DISABLE_TX
;
751 cmd
.tfd_queue_msk
= cpu_to_le32(mvm_sta
->tfd_queue_msk
);
752 cmd
.tid_disable_tx
= cpu_to_le16(mvm_sta
->tid_disable_agg
);
754 status
= ADD_STA_SUCCESS
;
755 ret
= iwl_mvm_send_cmd_pdu_status(mvm
, ADD_STA
, sizeof(cmd
),
761 case ADD_STA_SUCCESS
:
765 IWL_ERR(mvm
, "TX BA Session failed %sing, status 0x%x\n",
766 start
? "start" : "stopp", status
);
773 const u8 tid_to_mac80211_ac
[] = {
784 static const u8 tid_to_ucode_ac
[] = {
795 int iwl_mvm_sta_tx_agg_start(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
,
796 struct ieee80211_sta
*sta
, u16 tid
, u16
*ssn
)
798 struct iwl_mvm_sta
*mvmsta
= iwl_mvm_sta_from_mac80211(sta
);
799 struct iwl_mvm_tid_data
*tid_data
;
802 if (WARN_ON_ONCE(tid
>= IWL_MAX_TID_COUNT
))
805 if (mvmsta
->tid_data
[tid
].state
!= IWL_AGG_OFF
) {
806 IWL_ERR(mvm
, "Start AGG when state is not IWL_AGG_OFF %d!\n",
807 mvmsta
->tid_data
[tid
].state
);
811 lockdep_assert_held(&mvm
->mutex
);
813 for (txq_id
= mvm
->first_agg_queue
;
814 txq_id
<= mvm
->last_agg_queue
; txq_id
++)
815 if (mvm
->queue_to_mac80211
[txq_id
] ==
816 IWL_INVALID_MAC80211_QUEUE
)
819 if (txq_id
> mvm
->last_agg_queue
) {
820 IWL_ERR(mvm
, "Failed to allocate agg queue\n");
824 spin_lock_bh(&mvmsta
->lock
);
826 /* possible race condition - we entered D0i3 while starting agg */
827 if (test_bit(IWL_MVM_STATUS_IN_D0I3
, &mvm
->status
)) {
828 spin_unlock_bh(&mvmsta
->lock
);
829 IWL_ERR(mvm
, "Entered D0i3 while starting Tx agg\n");
833 /* the new tx queue is still connected to the same mac80211 queue */
834 mvm
->queue_to_mac80211
[txq_id
] = vif
->hw_queue
[tid_to_mac80211_ac
[tid
]];
836 tid_data
= &mvmsta
->tid_data
[tid
];
837 tid_data
->ssn
= IEEE80211_SEQ_TO_SN(tid_data
->seq_number
);
838 tid_data
->txq_id
= txq_id
;
839 *ssn
= tid_data
->ssn
;
841 IWL_DEBUG_TX_QUEUES(mvm
,
842 "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n",
843 mvmsta
->sta_id
, tid
, txq_id
, tid_data
->ssn
,
844 tid_data
->next_reclaimed
);
846 if (tid_data
->ssn
== tid_data
->next_reclaimed
) {
847 tid_data
->state
= IWL_AGG_STARTING
;
848 ieee80211_start_tx_ba_cb_irqsafe(vif
, sta
->addr
, tid
);
850 tid_data
->state
= IWL_EMPTYING_HW_QUEUE_ADDBA
;
853 spin_unlock_bh(&mvmsta
->lock
);
858 int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
,
859 struct ieee80211_sta
*sta
, u16 tid
, u8 buf_size
)
861 struct iwl_mvm_sta
*mvmsta
= iwl_mvm_sta_from_mac80211(sta
);
862 struct iwl_mvm_tid_data
*tid_data
= &mvmsta
->tid_data
[tid
];
863 int queue
, fifo
, ret
;
866 buf_size
= min_t(int, buf_size
, LINK_QUAL_AGG_FRAME_LIMIT_DEF
);
868 spin_lock_bh(&mvmsta
->lock
);
870 queue
= tid_data
->txq_id
;
871 tid_data
->state
= IWL_AGG_ON
;
872 tid_data
->ssn
= 0xffff;
873 spin_unlock_bh(&mvmsta
->lock
);
875 fifo
= iwl_mvm_ac_to_tx_fifo
[tid_to_mac80211_ac
[tid
]];
877 ret
= iwl_mvm_sta_tx_agg(mvm
, sta
, tid
, queue
, true);
881 iwl_trans_txq_enable(mvm
->trans
, queue
, fifo
, mvmsta
->sta_id
, tid
,
885 * Even though in theory the peer could have different
886 * aggregation reorder buffer sizes for different sessions,
887 * our ucode doesn't allow for that and has a global limit
888 * for each station. Therefore, use the minimum of all the
889 * aggregation sessions and our default value.
891 mvmsta
->max_agg_bufsize
=
892 min(mvmsta
->max_agg_bufsize
, buf_size
);
893 mvmsta
->lq_sta
.lq
.agg_frame_cnt_limit
= mvmsta
->max_agg_bufsize
;
895 IWL_DEBUG_HT(mvm
, "Tx aggregation enabled on ra = %pM tid = %d\n",
898 return iwl_mvm_send_lq_cmd(mvm
, &mvmsta
->lq_sta
.lq
, false);
901 int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
,
902 struct ieee80211_sta
*sta
, u16 tid
)
904 struct iwl_mvm_sta
*mvmsta
= iwl_mvm_sta_from_mac80211(sta
);
905 struct iwl_mvm_tid_data
*tid_data
= &mvmsta
->tid_data
[tid
];
911 * If mac80211 is cleaning its state, then say that we finished since
912 * our state has been cleared anyway.
914 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART
, &mvm
->status
)) {
915 ieee80211_stop_tx_ba_cb_irqsafe(vif
, sta
->addr
, tid
);
919 spin_lock_bh(&mvmsta
->lock
);
921 txq_id
= tid_data
->txq_id
;
923 IWL_DEBUG_TX_QUEUES(mvm
, "Stop AGG: sta %d tid %d q %d state %d\n",
924 mvmsta
->sta_id
, tid
, txq_id
, tid_data
->state
);
926 switch (tid_data
->state
) {
928 tid_data
->ssn
= IEEE80211_SEQ_TO_SN(tid_data
->seq_number
);
930 IWL_DEBUG_TX_QUEUES(mvm
,
931 "ssn = %d, next_recl = %d\n",
932 tid_data
->ssn
, tid_data
->next_reclaimed
);
934 /* There are still packets for this RA / TID in the HW */
935 if (tid_data
->ssn
!= tid_data
->next_reclaimed
) {
936 tid_data
->state
= IWL_EMPTYING_HW_QUEUE_DELBA
;
941 tid_data
->ssn
= 0xffff;
942 iwl_trans_txq_disable(mvm
->trans
, txq_id
, true);
944 case IWL_AGG_STARTING
:
945 case IWL_EMPTYING_HW_QUEUE_ADDBA
:
947 * The agg session has been stopped before it was set up. This
948 * can happen when the AddBA timer times out for example.
951 /* No barriers since we are under mutex */
952 lockdep_assert_held(&mvm
->mutex
);
953 mvm
->queue_to_mac80211
[txq_id
] = IWL_INVALID_MAC80211_QUEUE
;
955 ieee80211_stop_tx_ba_cb_irqsafe(vif
, sta
->addr
, tid
);
956 tid_data
->state
= IWL_AGG_OFF
;
961 "Stopping AGG while state not ON or starting for %d on %d (%d)\n",
962 mvmsta
->sta_id
, tid
, tid_data
->state
);
964 "\ttid_data->txq_id = %d\n", tid_data
->txq_id
);
968 spin_unlock_bh(&mvmsta
->lock
);
973 int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm
*mvm
, struct ieee80211_vif
*vif
,
974 struct ieee80211_sta
*sta
, u16 tid
)
976 struct iwl_mvm_sta
*mvmsta
= iwl_mvm_sta_from_mac80211(sta
);
977 struct iwl_mvm_tid_data
*tid_data
= &mvmsta
->tid_data
[tid
];
979 enum iwl_mvm_agg_state old_state
;
982 * First set the agg state to OFF to avoid calling
983 * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty.
985 spin_lock_bh(&mvmsta
->lock
);
986 txq_id
= tid_data
->txq_id
;
987 IWL_DEBUG_TX_QUEUES(mvm
, "Flush AGG: sta %d tid %d q %d state %d\n",
988 mvmsta
->sta_id
, tid
, txq_id
, tid_data
->state
);
989 old_state
= tid_data
->state
;
990 tid_data
->state
= IWL_AGG_OFF
;
991 spin_unlock_bh(&mvmsta
->lock
);
993 if (old_state
>= IWL_AGG_ON
) {
994 if (iwl_mvm_flush_tx_path(mvm
, BIT(txq_id
), true))
995 IWL_ERR(mvm
, "Couldn't flush the AGG queue\n");
997 iwl_trans_txq_disable(mvm
->trans
, tid_data
->txq_id
, true);
1000 mvm
->queue_to_mac80211
[tid_data
->txq_id
] =
1001 IWL_INVALID_MAC80211_QUEUE
;
1006 static int iwl_mvm_set_fw_key_idx(struct iwl_mvm
*mvm
)
1010 lockdep_assert_held(&mvm
->mutex
);
1012 i
= find_first_zero_bit(mvm
->fw_key_table
, STA_KEY_MAX_NUM
);
1014 if (i
== STA_KEY_MAX_NUM
)
1015 return STA_KEY_IDX_INVALID
;
1017 __set_bit(i
, mvm
->fw_key_table
);
1022 static u8
iwl_mvm_get_key_sta_id(struct ieee80211_vif
*vif
,
1023 struct ieee80211_sta
*sta
)
1025 struct iwl_mvm_vif
*mvmvif
= (void *)vif
->drv_priv
;
1028 struct iwl_mvm_sta
*mvm_sta
= (void *)sta
->drv_priv
;
1030 return mvm_sta
->sta_id
;
1034 * The device expects GTKs for station interfaces to be
1035 * installed as GTKs for the AP station. If we have no
1036 * station ID, then use AP's station ID.
1038 if (vif
->type
== NL80211_IFTYPE_STATION
&&
1039 mvmvif
->ap_sta_id
!= IWL_MVM_STATION_COUNT
)
1040 return mvmvif
->ap_sta_id
;
1042 return IWL_MVM_STATION_COUNT
;
1045 static int iwl_mvm_send_sta_key(struct iwl_mvm
*mvm
,
1046 struct iwl_mvm_sta
*mvm_sta
,
1047 struct ieee80211_key_conf
*keyconf
,
1048 u8 sta_id
, u32 tkip_iv32
, u16
*tkip_p1k
,
1051 struct iwl_mvm_add_sta_key_cmd cmd
= {};
1057 keyidx
= (keyconf
->keyidx
<< STA_KEY_FLG_KEYID_POS
) &
1058 STA_KEY_FLG_KEYID_MSK
;
1059 key_flags
= cpu_to_le16(keyidx
);
1060 key_flags
|= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP
);
1062 switch (keyconf
->cipher
) {
1063 case WLAN_CIPHER_SUITE_TKIP
:
1064 key_flags
|= cpu_to_le16(STA_KEY_FLG_TKIP
);
1065 cmd
.tkip_rx_tsc_byte2
= tkip_iv32
;
1066 for (i
= 0; i
< 5; i
++)
1067 cmd
.tkip_rx_ttak
[i
] = cpu_to_le16(tkip_p1k
[i
]);
1068 memcpy(cmd
.key
, keyconf
->key
, keyconf
->keylen
);
1070 case WLAN_CIPHER_SUITE_CCMP
:
1071 key_flags
|= cpu_to_le16(STA_KEY_FLG_CCM
);
1072 memcpy(cmd
.key
, keyconf
->key
, keyconf
->keylen
);
1075 key_flags
|= cpu_to_le16(STA_KEY_FLG_EXT
);
1076 memcpy(cmd
.key
, keyconf
->key
, keyconf
->keylen
);
1079 if (!(keyconf
->flags
& IEEE80211_KEY_FLAG_PAIRWISE
))
1080 key_flags
|= cpu_to_le16(STA_KEY_MULTICAST
);
1082 cmd
.key_offset
= keyconf
->hw_key_idx
;
1083 cmd
.key_flags
= key_flags
;
1084 cmd
.sta_id
= sta_id
;
1086 status
= ADD_STA_SUCCESS
;
1087 if (cmd_flags
& CMD_ASYNC
)
1088 ret
= iwl_mvm_send_cmd_pdu(mvm
, ADD_STA_KEY
, CMD_ASYNC
,
1091 ret
= iwl_mvm_send_cmd_pdu_status(mvm
, ADD_STA_KEY
, sizeof(cmd
),
1095 case ADD_STA_SUCCESS
:
1096 IWL_DEBUG_WEP(mvm
, "MODIFY_STA: set dynamic key passed\n");
1100 IWL_ERR(mvm
, "MODIFY_STA: set dynamic key failed\n");
1107 static int iwl_mvm_send_sta_igtk(struct iwl_mvm
*mvm
,
1108 struct ieee80211_key_conf
*keyconf
,
1109 u8 sta_id
, bool remove_key
)
1111 struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd
= {};
1113 /* verify the key details match the required command's expectations */
1114 if (WARN_ON((keyconf
->cipher
!= WLAN_CIPHER_SUITE_AES_CMAC
) ||
1115 (keyconf
->flags
& IEEE80211_KEY_FLAG_PAIRWISE
) ||
1116 (keyconf
->keyidx
!= 4 && keyconf
->keyidx
!= 5)))
1119 igtk_cmd
.key_id
= cpu_to_le32(keyconf
->keyidx
);
1120 igtk_cmd
.sta_id
= cpu_to_le32(sta_id
);
1123 igtk_cmd
.ctrl_flags
|= cpu_to_le32(STA_KEY_NOT_VALID
);
1125 struct ieee80211_key_seq seq
;
1128 memcpy(igtk_cmd
.IGTK
, keyconf
->key
, keyconf
->keylen
);
1129 ieee80211_aes_cmac_calculate_k1_k2(keyconf
,
1130 igtk_cmd
.K1
, igtk_cmd
.K2
);
1131 ieee80211_get_key_rx_seq(keyconf
, 0, &seq
);
1132 pn
= seq
.aes_cmac
.pn
;
1133 igtk_cmd
.receive_seq_cnt
= cpu_to_le64(((u64
) pn
[5] << 0) |
1134 ((u64
) pn
[4] << 8) |
1135 ((u64
) pn
[3] << 16) |
1136 ((u64
) pn
[2] << 24) |
1137 ((u64
) pn
[1] << 32) |
1138 ((u64
) pn
[0] << 40));
1141 IWL_DEBUG_INFO(mvm
, "%s igtk for sta %u\n",
1142 remove_key
? "removing" : "installing",
1145 return iwl_mvm_send_cmd_pdu(mvm
, MGMT_MCAST_KEY
, 0,
1146 sizeof(igtk_cmd
), &igtk_cmd
);
1150 static inline u8
*iwl_mvm_get_mac_addr(struct iwl_mvm
*mvm
,
1151 struct ieee80211_vif
*vif
,
1152 struct ieee80211_sta
*sta
)
1154 struct iwl_mvm_vif
*mvmvif
= (void *)vif
->drv_priv
;
1159 if (vif
->type
== NL80211_IFTYPE_STATION
&&
1160 mvmvif
->ap_sta_id
!= IWL_MVM_STATION_COUNT
) {
1161 u8 sta_id
= mvmvif
->ap_sta_id
;
1162 sta
= rcu_dereference_protected(mvm
->fw_id_to_mac_id
[sta_id
],
1163 lockdep_is_held(&mvm
->mutex
));
1171 int iwl_mvm_set_sta_key(struct iwl_mvm
*mvm
,
1172 struct ieee80211_vif
*vif
,
1173 struct ieee80211_sta
*sta
,
1174 struct ieee80211_key_conf
*keyconf
,
1175 bool have_key_offset
)
1177 struct iwl_mvm_sta
*mvm_sta
;
1180 struct ieee80211_key_seq seq
;
1183 lockdep_assert_held(&mvm
->mutex
);
1185 /* Get the station id from the mvm local station table */
1186 sta_id
= iwl_mvm_get_key_sta_id(vif
, sta
);
1187 if (sta_id
== IWL_MVM_STATION_COUNT
) {
1188 IWL_ERR(mvm
, "Failed to find station id\n");
1192 if (keyconf
->cipher
== WLAN_CIPHER_SUITE_AES_CMAC
) {
1193 ret
= iwl_mvm_send_sta_igtk(mvm
, keyconf
, sta_id
, false);
1198 * It is possible that the 'sta' parameter is NULL, and thus
1199 * there is a need to retrieve the sta from the local station table.
1202 sta
= rcu_dereference_protected(mvm
->fw_id_to_mac_id
[sta_id
],
1203 lockdep_is_held(&mvm
->mutex
));
1204 if (IS_ERR_OR_NULL(sta
)) {
1205 IWL_ERR(mvm
, "Invalid station id\n");
1210 mvm_sta
= (struct iwl_mvm_sta
*)sta
->drv_priv
;
1211 if (WARN_ON_ONCE(mvm_sta
->vif
!= vif
))
1214 if (!have_key_offset
) {
1216 * The D3 firmware hardcodes the PTK offset to 0, so we have to
1217 * configure it there. As a result, this workaround exists to
1218 * let the caller set the key offset (hw_key_idx), see d3.c.
1220 keyconf
->hw_key_idx
= iwl_mvm_set_fw_key_idx(mvm
);
1221 if (keyconf
->hw_key_idx
== STA_KEY_IDX_INVALID
)
1225 switch (keyconf
->cipher
) {
1226 case WLAN_CIPHER_SUITE_TKIP
:
1227 addr
= iwl_mvm_get_mac_addr(mvm
, vif
, sta
);
1228 /* get phase 1 key from mac80211 */
1229 ieee80211_get_key_rx_seq(keyconf
, 0, &seq
);
1230 ieee80211_get_tkip_rx_p1k(keyconf
, addr
, seq
.tkip
.iv32
, p1k
);
1231 ret
= iwl_mvm_send_sta_key(mvm
, mvm_sta
, keyconf
, sta_id
,
1232 seq
.tkip
.iv32
, p1k
, 0);
1234 case WLAN_CIPHER_SUITE_CCMP
:
1235 ret
= iwl_mvm_send_sta_key(mvm
, mvm_sta
, keyconf
, sta_id
,
1239 ret
= iwl_mvm_send_sta_key(mvm
, mvm_sta
, keyconf
,
1240 sta_id
, 0, NULL
, 0);
1244 __clear_bit(keyconf
->hw_key_idx
, mvm
->fw_key_table
);
1247 IWL_DEBUG_WEP(mvm
, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n",
1248 keyconf
->cipher
, keyconf
->keylen
, keyconf
->keyidx
,
1253 int iwl_mvm_remove_sta_key(struct iwl_mvm
*mvm
,
1254 struct ieee80211_vif
*vif
,
1255 struct ieee80211_sta
*sta
,
1256 struct ieee80211_key_conf
*keyconf
)
1258 struct iwl_mvm_sta
*mvm_sta
;
1259 struct iwl_mvm_add_sta_key_cmd cmd
= {};
1264 lockdep_assert_held(&mvm
->mutex
);
1266 /* Get the station id from the mvm local station table */
1267 sta_id
= iwl_mvm_get_key_sta_id(vif
, sta
);
1269 IWL_DEBUG_WEP(mvm
, "mvm remove dynamic key: idx=%d sta=%d\n",
1270 keyconf
->keyidx
, sta_id
);
1272 if (keyconf
->cipher
== WLAN_CIPHER_SUITE_AES_CMAC
)
1273 return iwl_mvm_send_sta_igtk(mvm
, keyconf
, sta_id
, true);
1275 ret
= __test_and_clear_bit(keyconf
->hw_key_idx
, mvm
->fw_key_table
);
1277 IWL_ERR(mvm
, "offset %d not used in fw key table.\n",
1278 keyconf
->hw_key_idx
);
1282 if (sta_id
== IWL_MVM_STATION_COUNT
) {
1283 IWL_DEBUG_WEP(mvm
, "station non-existent, early return.\n");
1288 * It is possible that the 'sta' parameter is NULL, and thus
1289 * there is a need to retrieve the sta from the local station table,
1290 * for example when a GTK is removed (where the sta_id will then be
1291 * the AP ID, and no station was passed by mac80211.)
1294 sta
= rcu_dereference_protected(mvm
->fw_id_to_mac_id
[sta_id
],
1295 lockdep_is_held(&mvm
->mutex
));
1297 IWL_ERR(mvm
, "Invalid station id\n");
1302 mvm_sta
= (struct iwl_mvm_sta
*)sta
->drv_priv
;
1303 if (WARN_ON_ONCE(mvm_sta
->vif
!= vif
))
1306 key_flags
= cpu_to_le16((keyconf
->keyidx
<< STA_KEY_FLG_KEYID_POS
) &
1307 STA_KEY_FLG_KEYID_MSK
);
1308 key_flags
|= cpu_to_le16(STA_KEY_FLG_NO_ENC
| STA_KEY_FLG_WEP_KEY_MAP
);
1309 key_flags
|= cpu_to_le16(STA_KEY_NOT_VALID
);
1311 if (!(keyconf
->flags
& IEEE80211_KEY_FLAG_PAIRWISE
))
1312 key_flags
|= cpu_to_le16(STA_KEY_MULTICAST
);
1314 cmd
.key_flags
= key_flags
;
1315 cmd
.key_offset
= keyconf
->hw_key_idx
;
1316 cmd
.sta_id
= sta_id
;
1318 status
= ADD_STA_SUCCESS
;
1319 ret
= iwl_mvm_send_cmd_pdu_status(mvm
, ADD_STA_KEY
, sizeof(cmd
),
1323 case ADD_STA_SUCCESS
:
1324 IWL_DEBUG_WEP(mvm
, "MODIFY_STA: remove sta key passed\n");
1328 IWL_ERR(mvm
, "MODIFY_STA: remove sta key failed\n");
1335 void iwl_mvm_update_tkip_key(struct iwl_mvm
*mvm
,
1336 struct ieee80211_vif
*vif
,
1337 struct ieee80211_key_conf
*keyconf
,
1338 struct ieee80211_sta
*sta
, u32 iv32
,
1341 struct iwl_mvm_sta
*mvm_sta
;
1342 u8 sta_id
= iwl_mvm_get_key_sta_id(vif
, sta
);
1344 if (WARN_ON_ONCE(sta_id
== IWL_MVM_STATION_COUNT
))
1350 sta
= rcu_dereference(mvm
->fw_id_to_mac_id
[sta_id
]);
1351 if (WARN_ON(IS_ERR_OR_NULL(sta
))) {
1357 mvm_sta
= (void *)sta
->drv_priv
;
1358 iwl_mvm_send_sta_key(mvm
, mvm_sta
, keyconf
, sta_id
,
1359 iv32
, phase1key
, CMD_ASYNC
);
1363 void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm
*mvm
,
1364 struct ieee80211_sta
*sta
)
1366 struct iwl_mvm_sta
*mvmsta
= iwl_mvm_sta_from_mac80211(sta
);
1367 struct iwl_mvm_add_sta_cmd cmd
= {
1368 .add_modify
= STA_MODE_MODIFY
,
1369 .sta_id
= mvmsta
->sta_id
,
1370 .station_flags_msk
= cpu_to_le32(STA_FLG_PS
),
1371 .mac_id_n_color
= cpu_to_le32(mvmsta
->mac_id_n_color
),
1375 ret
= iwl_mvm_send_cmd_pdu(mvm
, ADD_STA
, CMD_ASYNC
, sizeof(cmd
), &cmd
);
1377 IWL_ERR(mvm
, "Failed to send ADD_STA command (%d)\n", ret
);
1380 void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm
*mvm
,
1381 struct ieee80211_sta
*sta
,
1382 enum ieee80211_frame_release_type reason
,
1383 u16 cnt
, u16 tids
, bool more_data
,
1386 struct iwl_mvm_sta
*mvmsta
= iwl_mvm_sta_from_mac80211(sta
);
1387 struct iwl_mvm_add_sta_cmd cmd
= {
1388 .add_modify
= STA_MODE_MODIFY
,
1389 .sta_id
= mvmsta
->sta_id
,
1390 .modify_mask
= STA_MODIFY_SLEEPING_STA_TX_COUNT
,
1391 .sleep_tx_count
= cpu_to_le16(cnt
),
1392 .mac_id_n_color
= cpu_to_le32(mvmsta
->mac_id_n_color
),
1395 unsigned long _tids
= tids
;
1397 /* convert TIDs to ACs - we don't support TSPEC so that's OK
1398 * Note that this field is reserved and unused by firmware not
1399 * supporting GO uAPSD, so it's safe to always do this.
1401 for_each_set_bit(tid
, &_tids
, IWL_MAX_TID_COUNT
)
1402 cmd
.awake_acs
|= BIT(tid_to_ucode_ac
[tid
]);
1404 /* If we're releasing frames from aggregation queues then check if the
1405 * all queues combined that we're releasing frames from have
1406 * - more frames than the service period, in which case more_data
1408 * - fewer than 'cnt' frames, in which case we need to adjust the
1409 * firmware command (but do that unconditionally)
1412 int remaining
= cnt
;
1414 spin_lock_bh(&mvmsta
->lock
);
1415 for_each_set_bit(tid
, &_tids
, IWL_MAX_TID_COUNT
) {
1416 struct iwl_mvm_tid_data
*tid_data
;
1419 tid_data
= &mvmsta
->tid_data
[tid
];
1420 if (WARN(tid_data
->state
!= IWL_AGG_ON
&&
1421 tid_data
->state
!= IWL_EMPTYING_HW_QUEUE_DELBA
,
1422 "TID %d state is %d\n",
1423 tid
, tid_data
->state
)) {
1424 spin_unlock_bh(&mvmsta
->lock
);
1425 ieee80211_sta_eosp(sta
);
1429 n_queued
= iwl_mvm_tid_queued(tid_data
);
1430 if (n_queued
> remaining
) {
1435 remaining
-= n_queued
;
1437 spin_unlock_bh(&mvmsta
->lock
);
1439 cmd
.sleep_tx_count
= cpu_to_le16(cnt
- remaining
);
1440 if (WARN_ON(cnt
- remaining
== 0)) {
1441 ieee80211_sta_eosp(sta
);
1446 /* Note: this is ignored by firmware not supporting GO uAPSD */
1448 cmd
.sleep_state_flags
|= cpu_to_le16(STA_SLEEP_STATE_MOREDATA
);
1450 if (reason
== IEEE80211_FRAME_RELEASE_PSPOLL
) {
1451 mvmsta
->next_status_eosp
= true;
1452 cmd
.sleep_state_flags
|= cpu_to_le16(STA_SLEEP_STATE_PS_POLL
);
1454 cmd
.sleep_state_flags
|= cpu_to_le16(STA_SLEEP_STATE_UAPSD
);
1457 ret
= iwl_mvm_send_cmd_pdu(mvm
, ADD_STA
, CMD_ASYNC
, sizeof(cmd
), &cmd
);
1459 IWL_ERR(mvm
, "Failed to send ADD_STA command (%d)\n", ret
);
1462 int iwl_mvm_rx_eosp_notif(struct iwl_mvm
*mvm
,
1463 struct iwl_rx_cmd_buffer
*rxb
,
1464 struct iwl_device_cmd
*cmd
)
1466 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
1467 struct iwl_mvm_eosp_notification
*notif
= (void *)pkt
->data
;
1468 struct ieee80211_sta
*sta
;
1469 u32 sta_id
= le32_to_cpu(notif
->sta_id
);
1471 if (WARN_ON_ONCE(sta_id
>= IWL_MVM_STATION_COUNT
))
1475 sta
= rcu_dereference(mvm
->fw_id_to_mac_id
[sta_id
]);
1476 if (!IS_ERR_OR_NULL(sta
))
1477 ieee80211_sta_eosp(sta
);
1483 void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm
*mvm
,
1484 struct iwl_mvm_sta
*mvmsta
, bool disable
)
1486 struct iwl_mvm_add_sta_cmd cmd
= {
1487 .add_modify
= STA_MODE_MODIFY
,
1488 .sta_id
= mvmsta
->sta_id
,
1489 .station_flags
= disable
? cpu_to_le32(STA_FLG_DISABLE_TX
) : 0,
1490 .station_flags_msk
= cpu_to_le32(STA_FLG_DISABLE_TX
),
1491 .mac_id_n_color
= cpu_to_le32(mvmsta
->mac_id_n_color
),
1495 if (!(mvm
->fw
->ucode_capa
.api
[0] & IWL_UCODE_TLV_API_DISABLE_STA_TX
))
1498 ret
= iwl_mvm_send_cmd_pdu(mvm
, ADD_STA
, CMD_ASYNC
, sizeof(cmd
), &cmd
);
1500 IWL_ERR(mvm
, "Failed to send ADD_STA command (%d)\n", ret
);
1503 void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm
*mvm
,
1504 struct ieee80211_sta
*sta
,
1507 struct iwl_mvm_sta
*mvm_sta
= iwl_mvm_sta_from_mac80211(sta
);
1509 spin_lock_bh(&mvm_sta
->lock
);
1511 if (mvm_sta
->disable_tx
== disable
) {
1512 spin_unlock_bh(&mvm_sta
->lock
);
1516 mvm_sta
->disable_tx
= disable
;
1519 * Tell mac80211 to start/stop queueing tx for this station,
1520 * but don't stop queueing if there are still pending frames
1523 if (disable
|| !atomic_read(&mvm
->pending_frames
[mvm_sta
->sta_id
]))
1524 ieee80211_sta_block_awake(mvm
->hw
, sta
, disable
);
1526 iwl_mvm_sta_modify_disable_tx(mvm
, mvm_sta
, disable
);
1528 spin_unlock_bh(&mvm_sta
->lock
);
1531 void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm
*mvm
,
1532 struct iwl_mvm_vif
*mvmvif
,
1535 struct ieee80211_sta
*sta
;
1536 struct iwl_mvm_sta
*mvm_sta
;
1539 lockdep_assert_held(&mvm
->mutex
);
1541 /* Block/unblock all the stations of the given mvmvif */
1542 for (i
= 0; i
< IWL_MVM_STATION_COUNT
; i
++) {
1543 sta
= rcu_dereference_protected(mvm
->fw_id_to_mac_id
[i
],
1544 lockdep_is_held(&mvm
->mutex
));
1545 if (IS_ERR_OR_NULL(sta
))
1548 mvm_sta
= iwl_mvm_sta_from_mac80211(sta
);
1549 if (mvm_sta
->mac_id_n_color
!=
1550 FW_CMD_ID_AND_COLOR(mvmvif
->id
, mvmvif
->color
))
1553 iwl_mvm_sta_modify_disable_tx_ap(mvm
, sta
, disable
);