1 /******************************************************************************
3 * Copyright(c) 2003 - 2012 Intel Corporation. All rights reserved.
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
28 *****************************************************************************/
29 #include <linux/etherdevice.h>
30 #include <net/mac80211.h>
34 #include "iwl-trans.h"
36 const u8 iwl_bcast_addr
[ETH_ALEN
] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
38 static int iwl_sta_ucode_activate(struct iwl_priv
*priv
, u8 sta_id
)
40 lockdep_assert_held(&priv
->sta_lock
);
42 if (sta_id
>= IWLAGN_STATION_COUNT
) {
43 IWL_ERR(priv
, "invalid sta_id %u", sta_id
);
46 if (!(priv
->stations
[sta_id
].used
& IWL_STA_DRIVER_ACTIVE
))
47 IWL_ERR(priv
, "ACTIVATE a non DRIVER active station id %u "
49 sta_id
, priv
->stations
[sta_id
].sta
.sta
.addr
);
51 if (priv
->stations
[sta_id
].used
& IWL_STA_UCODE_ACTIVE
) {
53 "STA id %u addr %pM already present in uCode "
54 "(according to driver)\n",
55 sta_id
, priv
->stations
[sta_id
].sta
.sta
.addr
);
57 priv
->stations
[sta_id
].used
|= IWL_STA_UCODE_ACTIVE
;
58 IWL_DEBUG_ASSOC(priv
, "Added STA id %u addr %pM to uCode\n",
59 sta_id
, priv
->stations
[sta_id
].sta
.sta
.addr
);
64 static int iwl_process_add_sta_resp(struct iwl_priv
*priv
,
65 struct iwl_addsta_cmd
*addsta
,
66 struct iwl_rx_packet
*pkt
)
68 struct iwl_add_sta_resp
*add_sta_resp
= (void *)pkt
->data
;
69 u8 sta_id
= addsta
->sta
.sta_id
;
72 if (pkt
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
73 IWL_ERR(priv
, "Bad return from REPLY_ADD_STA (0x%08X)\n",
78 IWL_DEBUG_INFO(priv
, "Processing response for adding station %u\n",
81 spin_lock(&priv
->sta_lock
);
83 switch (add_sta_resp
->status
) {
84 case ADD_STA_SUCCESS_MSK
:
85 IWL_DEBUG_INFO(priv
, "REPLY_ADD_STA PASSED\n");
86 ret
= iwl_sta_ucode_activate(priv
, sta_id
);
88 case ADD_STA_NO_ROOM_IN_TABLE
:
89 IWL_ERR(priv
, "Adding station %d failed, no room in table.\n",
92 case ADD_STA_NO_BLOCK_ACK_RESOURCE
:
93 IWL_ERR(priv
, "Adding station %d failed, no block ack "
94 "resource.\n", sta_id
);
96 case ADD_STA_MODIFY_NON_EXIST_STA
:
97 IWL_ERR(priv
, "Attempting to modify non-existing station %d\n",
101 IWL_DEBUG_ASSOC(priv
, "Received REPLY_ADD_STA:(0x%08X)\n",
102 add_sta_resp
->status
);
106 IWL_DEBUG_INFO(priv
, "%s station id %u addr %pM\n",
107 priv
->stations
[sta_id
].sta
.mode
==
108 STA_CONTROL_MODIFY_MSK
? "Modified" : "Added",
109 sta_id
, priv
->stations
[sta_id
].sta
.sta
.addr
);
112 * XXX: The MAC address in the command buffer is often changed from
113 * the original sent to the device. That is, the MAC address
114 * written to the command buffer often is not the same MAC address
115 * read from the command buffer when the command returns. This
116 * issue has not yet been resolved and this debugging is left to
117 * observe the problem.
119 IWL_DEBUG_INFO(priv
, "%s station according to cmd buffer %pM\n",
120 priv
->stations
[sta_id
].sta
.mode
==
121 STA_CONTROL_MODIFY_MSK
? "Modified" : "Added",
123 spin_unlock(&priv
->sta_lock
);
128 int iwl_add_sta_callback(struct iwl_priv
*priv
, struct iwl_rx_cmd_buffer
*rxb
,
129 struct iwl_device_cmd
*cmd
)
131 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
132 struct iwl_addsta_cmd
*addsta
=
133 (struct iwl_addsta_cmd
*) cmd
->payload
;
135 return iwl_process_add_sta_resp(priv
, addsta
, pkt
);
138 int iwl_send_add_sta(struct iwl_priv
*priv
,
139 struct iwl_addsta_cmd
*sta
, u8 flags
)
142 struct iwl_host_cmd cmd
= {
146 .len
= { sizeof(*sta
), },
148 u8 sta_id __maybe_unused
= sta
->sta
.sta_id
;
150 IWL_DEBUG_INFO(priv
, "Adding sta %u (%pM) %ssynchronously\n",
151 sta_id
, sta
->sta
.addr
, flags
& CMD_ASYNC
? "a" : "");
153 if (!(flags
& CMD_ASYNC
)) {
154 cmd
.flags
|= CMD_WANT_SKB
;
158 ret
= iwl_dvm_send_cmd(priv
, &cmd
);
160 if (ret
|| (flags
& CMD_ASYNC
))
162 /*else the command was successfully sent in SYNC mode, need to free
167 if (cmd
.handler_status
)
168 IWL_ERR(priv
, "%s - error in the CMD response %d", __func__
,
171 return cmd
.handler_status
;
174 static bool iwl_is_channel_extension(struct iwl_priv
*priv
,
175 enum ieee80211_band band
,
176 u16 channel
, u8 extension_chan_offset
)
178 const struct iwl_channel_info
*ch_info
;
180 ch_info
= iwl_get_channel_info(priv
, band
, channel
);
181 if (!is_channel_valid(ch_info
))
184 if (extension_chan_offset
== IEEE80211_HT_PARAM_CHA_SEC_ABOVE
)
185 return !(ch_info
->ht40_extension_channel
&
186 IEEE80211_CHAN_NO_HT40PLUS
);
187 else if (extension_chan_offset
== IEEE80211_HT_PARAM_CHA_SEC_BELOW
)
188 return !(ch_info
->ht40_extension_channel
&
189 IEEE80211_CHAN_NO_HT40MINUS
);
194 bool iwl_is_ht40_tx_allowed(struct iwl_priv
*priv
,
195 struct iwl_rxon_context
*ctx
,
196 struct ieee80211_sta_ht_cap
*ht_cap
)
198 if (!ctx
->ht
.enabled
|| !ctx
->ht
.is_40mhz
)
202 * We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40
203 * the bit will not set if it is pure 40MHz case
205 if (ht_cap
&& !ht_cap
->ht_supported
)
208 #ifdef CONFIG_IWLWIFI_DEBUGFS
209 if (priv
->disable_ht40
)
213 return iwl_is_channel_extension(priv
, priv
->band
,
214 le16_to_cpu(ctx
->staging
.channel
),
215 ctx
->ht
.extension_chan_offset
);
218 static void iwl_sta_calc_ht_flags(struct iwl_priv
*priv
,
219 struct ieee80211_sta
*sta
,
220 struct iwl_rxon_context
*ctx
,
221 __le32
*flags
, __le32
*mask
)
223 struct ieee80211_sta_ht_cap
*sta_ht_inf
= &sta
->ht_cap
;
226 *mask
= STA_FLG_RTS_MIMO_PROT_MSK
|
227 STA_FLG_MIMO_DIS_MSK
|
228 STA_FLG_HT40_EN_MSK
|
229 STA_FLG_MAX_AGG_SIZE_MSK
|
230 STA_FLG_AGG_MPDU_DENSITY_MSK
;
233 if (!sta
|| !sta_ht_inf
->ht_supported
)
236 mimo_ps_mode
= (sta_ht_inf
->cap
& IEEE80211_HT_CAP_SM_PS
) >> 2;
238 IWL_DEBUG_INFO(priv
, "STA %pM SM PS mode: %s\n",
239 (mimo_ps_mode
== WLAN_HT_CAP_SM_PS_STATIC
) ?
241 (mimo_ps_mode
== WLAN_HT_CAP_SM_PS_DYNAMIC
) ?
242 "dynamic" : "disabled");
244 switch (mimo_ps_mode
) {
245 case WLAN_HT_CAP_SM_PS_STATIC
:
246 *flags
|= STA_FLG_MIMO_DIS_MSK
;
248 case WLAN_HT_CAP_SM_PS_DYNAMIC
:
249 *flags
|= STA_FLG_RTS_MIMO_PROT_MSK
;
251 case WLAN_HT_CAP_SM_PS_DISABLED
:
254 IWL_WARN(priv
, "Invalid MIMO PS mode %d\n", mimo_ps_mode
);
258 *flags
|= cpu_to_le32(
259 (u32
)sta_ht_inf
->ampdu_factor
<< STA_FLG_MAX_AGG_SIZE_POS
);
261 *flags
|= cpu_to_le32(
262 (u32
)sta_ht_inf
->ampdu_density
<< STA_FLG_AGG_MPDU_DENSITY_POS
);
264 if (iwl_is_ht40_tx_allowed(priv
, ctx
, &sta
->ht_cap
))
265 *flags
|= STA_FLG_HT40_EN_MSK
;
268 int iwl_sta_update_ht(struct iwl_priv
*priv
, struct iwl_rxon_context
*ctx
,
269 struct ieee80211_sta
*sta
)
271 u8 sta_id
= iwl_sta_id(sta
);
273 struct iwl_addsta_cmd cmd
;
275 if (WARN_ON_ONCE(sta_id
== IWL_INVALID_STATION
))
278 iwl_sta_calc_ht_flags(priv
, sta
, ctx
, &flags
, &mask
);
280 spin_lock_bh(&priv
->sta_lock
);
281 priv
->stations
[sta_id
].sta
.station_flags
&= ~mask
;
282 priv
->stations
[sta_id
].sta
.station_flags
|= flags
;
283 spin_unlock_bh(&priv
->sta_lock
);
285 memset(&cmd
, 0, sizeof(cmd
));
286 cmd
.mode
= STA_CONTROL_MODIFY_MSK
;
287 cmd
.station_flags_msk
= mask
;
288 cmd
.station_flags
= flags
;
289 cmd
.sta
.sta_id
= sta_id
;
291 return iwl_send_add_sta(priv
, &cmd
, CMD_SYNC
);
294 static void iwl_set_ht_add_station(struct iwl_priv
*priv
, u8 index
,
295 struct ieee80211_sta
*sta
,
296 struct iwl_rxon_context
*ctx
)
300 iwl_sta_calc_ht_flags(priv
, sta
, ctx
, &flags
, &mask
);
302 lockdep_assert_held(&priv
->sta_lock
);
303 priv
->stations
[index
].sta
.station_flags
&= ~mask
;
304 priv
->stations
[index
].sta
.station_flags
|= flags
;
308 * iwl_prep_station - Prepare station information for addition
310 * should be called with sta_lock held
312 u8
iwl_prep_station(struct iwl_priv
*priv
, struct iwl_rxon_context
*ctx
,
313 const u8
*addr
, bool is_ap
, struct ieee80211_sta
*sta
)
315 struct iwl_station_entry
*station
;
317 u8 sta_id
= IWL_INVALID_STATION
;
320 sta_id
= ctx
->ap_sta_id
;
321 else if (is_broadcast_ether_addr(addr
))
322 sta_id
= ctx
->bcast_sta_id
;
324 for (i
= IWL_STA_ID
; i
< IWLAGN_STATION_COUNT
; i
++) {
325 if (ether_addr_equal(priv
->stations
[i
].sta
.sta
.addr
,
331 if (!priv
->stations
[i
].used
&&
332 sta_id
== IWL_INVALID_STATION
)
337 * These two conditions have the same outcome, but keep them
340 if (unlikely(sta_id
== IWL_INVALID_STATION
))
344 * uCode is not able to deal with multiple requests to add a
345 * station. Keep track if one is in progress so that we do not send
348 if (priv
->stations
[sta_id
].used
& IWL_STA_UCODE_INPROGRESS
) {
349 IWL_DEBUG_INFO(priv
, "STA %d already in process of being "
354 if ((priv
->stations
[sta_id
].used
& IWL_STA_DRIVER_ACTIVE
) &&
355 (priv
->stations
[sta_id
].used
& IWL_STA_UCODE_ACTIVE
) &&
356 ether_addr_equal(priv
->stations
[sta_id
].sta
.sta
.addr
, addr
)) {
357 IWL_DEBUG_ASSOC(priv
, "STA %d (%pM) already added, not "
358 "adding again.\n", sta_id
, addr
);
362 station
= &priv
->stations
[sta_id
];
363 station
->used
= IWL_STA_DRIVER_ACTIVE
;
364 IWL_DEBUG_ASSOC(priv
, "Add STA to driver ID %d: %pM\n",
366 priv
->num_stations
++;
368 /* Set up the REPLY_ADD_STA command to send to device */
369 memset(&station
->sta
, 0, sizeof(struct iwl_addsta_cmd
));
370 memcpy(station
->sta
.sta
.addr
, addr
, ETH_ALEN
);
371 station
->sta
.mode
= 0;
372 station
->sta
.sta
.sta_id
= sta_id
;
373 station
->sta
.station_flags
= ctx
->station_flags
;
374 station
->ctxid
= ctx
->ctxid
;
377 struct iwl_station_priv
*sta_priv
;
379 sta_priv
= (void *)sta
->drv_priv
;
384 * OK to call unconditionally, since local stations (IBSS BSSID
385 * STA and broadcast STA) pass in a NULL sta, and mac80211
386 * doesn't allow HT IBSS.
388 iwl_set_ht_add_station(priv
, sta_id
, sta
, ctx
);
394 #define STA_WAIT_TIMEOUT (HZ/2)
397 * iwl_add_station_common -
399 int iwl_add_station_common(struct iwl_priv
*priv
, struct iwl_rxon_context
*ctx
,
400 const u8
*addr
, bool is_ap
,
401 struct ieee80211_sta
*sta
, u8
*sta_id_r
)
405 struct iwl_addsta_cmd sta_cmd
;
408 spin_lock_bh(&priv
->sta_lock
);
409 sta_id
= iwl_prep_station(priv
, ctx
, addr
, is_ap
, sta
);
410 if (sta_id
== IWL_INVALID_STATION
) {
411 IWL_ERR(priv
, "Unable to prepare station %pM for addition\n",
413 spin_unlock_bh(&priv
->sta_lock
);
418 * uCode is not able to deal with multiple requests to add a
419 * station. Keep track if one is in progress so that we do not send
422 if (priv
->stations
[sta_id
].used
& IWL_STA_UCODE_INPROGRESS
) {
423 IWL_DEBUG_INFO(priv
, "STA %d already in process of being "
425 spin_unlock_bh(&priv
->sta_lock
);
429 if ((priv
->stations
[sta_id
].used
& IWL_STA_DRIVER_ACTIVE
) &&
430 (priv
->stations
[sta_id
].used
& IWL_STA_UCODE_ACTIVE
)) {
431 IWL_DEBUG_ASSOC(priv
, "STA %d (%pM) already added, not "
432 "adding again.\n", sta_id
, addr
);
433 spin_unlock_bh(&priv
->sta_lock
);
437 priv
->stations
[sta_id
].used
|= IWL_STA_UCODE_INPROGRESS
;
438 memcpy(&sta_cmd
, &priv
->stations
[sta_id
].sta
,
439 sizeof(struct iwl_addsta_cmd
));
440 spin_unlock_bh(&priv
->sta_lock
);
442 /* Add station to device's station table */
443 ret
= iwl_send_add_sta(priv
, &sta_cmd
, CMD_SYNC
);
445 spin_lock_bh(&priv
->sta_lock
);
446 IWL_ERR(priv
, "Adding station %pM failed.\n",
447 priv
->stations
[sta_id
].sta
.sta
.addr
);
448 priv
->stations
[sta_id
].used
&= ~IWL_STA_DRIVER_ACTIVE
;
449 priv
->stations
[sta_id
].used
&= ~IWL_STA_UCODE_INPROGRESS
;
450 spin_unlock_bh(&priv
->sta_lock
);
457 * iwl_sta_ucode_deactivate - deactivate ucode status for a station
459 static void iwl_sta_ucode_deactivate(struct iwl_priv
*priv
, u8 sta_id
)
461 lockdep_assert_held(&priv
->sta_lock
);
463 /* Ucode must be active and driver must be non active */
464 if ((priv
->stations
[sta_id
].used
&
465 (IWL_STA_UCODE_ACTIVE
| IWL_STA_DRIVER_ACTIVE
)) !=
466 IWL_STA_UCODE_ACTIVE
)
467 IWL_ERR(priv
, "removed non active STA %u\n", sta_id
);
469 priv
->stations
[sta_id
].used
&= ~IWL_STA_UCODE_ACTIVE
;
471 memset(&priv
->stations
[sta_id
], 0, sizeof(struct iwl_station_entry
));
472 IWL_DEBUG_ASSOC(priv
, "Removed STA %u\n", sta_id
);
475 static int iwl_send_remove_station(struct iwl_priv
*priv
,
476 const u8
*addr
, int sta_id
,
479 struct iwl_rx_packet
*pkt
;
481 struct iwl_rem_sta_cmd rm_sta_cmd
;
483 struct iwl_host_cmd cmd
= {
484 .id
= REPLY_REMOVE_STA
,
485 .len
= { sizeof(struct iwl_rem_sta_cmd
), },
487 .data
= { &rm_sta_cmd
, },
490 memset(&rm_sta_cmd
, 0, sizeof(rm_sta_cmd
));
491 rm_sta_cmd
.num_sta
= 1;
492 memcpy(&rm_sta_cmd
.addr
, addr
, ETH_ALEN
);
494 cmd
.flags
|= CMD_WANT_SKB
;
496 ret
= iwl_dvm_send_cmd(priv
, &cmd
);
502 if (pkt
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
503 IWL_ERR(priv
, "Bad return from REPLY_REMOVE_STA (0x%08X)\n",
509 struct iwl_rem_sta_resp
*rem_sta_resp
= (void *)pkt
->data
;
510 switch (rem_sta_resp
->status
) {
511 case REM_STA_SUCCESS_MSK
:
513 spin_lock_bh(&priv
->sta_lock
);
514 iwl_sta_ucode_deactivate(priv
, sta_id
);
515 spin_unlock_bh(&priv
->sta_lock
);
517 IWL_DEBUG_ASSOC(priv
, "REPLY_REMOVE_STA PASSED\n");
521 IWL_ERR(priv
, "REPLY_REMOVE_STA failed\n");
531 * iwl_remove_station - Remove driver's knowledge of station.
533 int iwl_remove_station(struct iwl_priv
*priv
, const u8 sta_id
,
538 if (!iwl_is_ready(priv
)) {
540 "Unable to remove station %pM, device not ready.\n",
543 * It is typical for stations to be removed when we are
544 * going down. Return success since device will be down
550 IWL_DEBUG_ASSOC(priv
, "Removing STA from driver:%d %pM\n",
553 if (WARN_ON(sta_id
== IWL_INVALID_STATION
))
556 spin_lock_bh(&priv
->sta_lock
);
558 if (!(priv
->stations
[sta_id
].used
& IWL_STA_DRIVER_ACTIVE
)) {
559 IWL_DEBUG_INFO(priv
, "Removing %pM but non DRIVER active\n",
564 if (!(priv
->stations
[sta_id
].used
& IWL_STA_UCODE_ACTIVE
)) {
565 IWL_DEBUG_INFO(priv
, "Removing %pM but non UCODE active\n",
570 if (priv
->stations
[sta_id
].used
& IWL_STA_LOCAL
) {
571 kfree(priv
->stations
[sta_id
].lq
);
572 priv
->stations
[sta_id
].lq
= NULL
;
575 for (tid
= 0; tid
< IWL_MAX_TID_COUNT
; tid
++)
576 memset(&priv
->tid_data
[sta_id
][tid
], 0,
577 sizeof(priv
->tid_data
[sta_id
][tid
]));
579 priv
->stations
[sta_id
].used
&= ~IWL_STA_DRIVER_ACTIVE
;
581 priv
->num_stations
--;
583 if (WARN_ON(priv
->num_stations
< 0))
584 priv
->num_stations
= 0;
586 spin_unlock_bh(&priv
->sta_lock
);
588 return iwl_send_remove_station(priv
, addr
, sta_id
, false);
590 spin_unlock_bh(&priv
->sta_lock
);
594 void iwl_deactivate_station(struct iwl_priv
*priv
, const u8 sta_id
,
599 if (!iwl_is_ready(priv
)) {
601 "Unable to remove station %pM, device not ready.\n",
606 IWL_DEBUG_ASSOC(priv
, "Deactivating STA: %pM (%d)\n", addr
, sta_id
);
608 if (WARN_ON_ONCE(sta_id
== IWL_INVALID_STATION
))
611 spin_lock_bh(&priv
->sta_lock
);
613 WARN_ON_ONCE(!(priv
->stations
[sta_id
].used
& IWL_STA_DRIVER_ACTIVE
));
615 for (tid
= 0; tid
< IWL_MAX_TID_COUNT
; tid
++)
616 memset(&priv
->tid_data
[sta_id
][tid
], 0,
617 sizeof(priv
->tid_data
[sta_id
][tid
]));
619 priv
->stations
[sta_id
].used
&= ~IWL_STA_DRIVER_ACTIVE
;
621 priv
->num_stations
--;
623 if (WARN_ON_ONCE(priv
->num_stations
< 0))
624 priv
->num_stations
= 0;
626 spin_unlock_bh(&priv
->sta_lock
);
629 static void iwl_sta_fill_lq(struct iwl_priv
*priv
, struct iwl_rxon_context
*ctx
,
630 u8 sta_id
, struct iwl_link_quality_cmd
*link_cmd
)
636 lockdep_assert_held(&priv
->mutex
);
638 memset(link_cmd
, 0, sizeof(*link_cmd
));
640 /* Set up the rate scaling to start at selected rate, fall back
641 * all the way down to 1M in IEEE order, and then spin on 1M */
642 if (priv
->band
== IEEE80211_BAND_5GHZ
)
643 r
= IWL_RATE_6M_INDEX
;
644 else if (ctx
&& ctx
->vif
&& ctx
->vif
->p2p
)
645 r
= IWL_RATE_6M_INDEX
;
647 r
= IWL_RATE_1M_INDEX
;
649 if (r
>= IWL_FIRST_CCK_RATE
&& r
<= IWL_LAST_CCK_RATE
)
650 rate_flags
|= RATE_MCS_CCK_MSK
;
652 rate_flags
|= first_antenna(priv
->hw_params
.valid_tx_ant
) <<
654 rate_n_flags
= iwl_hw_set_rate_n_flags(iwl_rates
[r
].plcp
, rate_flags
);
655 for (i
= 0; i
< LINK_QUAL_MAX_RETRY_NUM
; i
++)
656 link_cmd
->rs_table
[i
].rate_n_flags
= rate_n_flags
;
658 link_cmd
->general_params
.single_stream_ant_msk
=
659 first_antenna(priv
->hw_params
.valid_tx_ant
);
661 link_cmd
->general_params
.dual_stream_ant_msk
=
662 priv
->hw_params
.valid_tx_ant
&
663 ~first_antenna(priv
->hw_params
.valid_tx_ant
);
664 if (!link_cmd
->general_params
.dual_stream_ant_msk
) {
665 link_cmd
->general_params
.dual_stream_ant_msk
= ANT_AB
;
666 } else if (num_of_ant(priv
->hw_params
.valid_tx_ant
) == 2) {
667 link_cmd
->general_params
.dual_stream_ant_msk
=
668 priv
->hw_params
.valid_tx_ant
;
671 link_cmd
->agg_params
.agg_dis_start_th
=
672 LINK_QUAL_AGG_DISABLE_START_DEF
;
673 link_cmd
->agg_params
.agg_time_limit
=
674 cpu_to_le16(LINK_QUAL_AGG_TIME_LIMIT_DEF
);
676 link_cmd
->sta_id
= sta_id
;
680 * iwl_clear_ucode_stations - clear ucode station table bits
682 * This function clears all the bits in the driver indicating
683 * which stations are active in the ucode. Call when something
684 * other than explicit station management would cause this in
685 * the ucode, e.g. unassociated RXON.
687 void iwl_clear_ucode_stations(struct iwl_priv
*priv
,
688 struct iwl_rxon_context
*ctx
)
691 bool cleared
= false;
693 IWL_DEBUG_INFO(priv
, "Clearing ucode stations in driver\n");
695 spin_lock_bh(&priv
->sta_lock
);
696 for (i
= 0; i
< IWLAGN_STATION_COUNT
; i
++) {
697 if (ctx
&& ctx
->ctxid
!= priv
->stations
[i
].ctxid
)
700 if (priv
->stations
[i
].used
& IWL_STA_UCODE_ACTIVE
) {
702 "Clearing ucode active for station %d\n", i
);
703 priv
->stations
[i
].used
&= ~IWL_STA_UCODE_ACTIVE
;
707 spin_unlock_bh(&priv
->sta_lock
);
711 "No active stations found to be cleared\n");
715 * iwl_restore_stations() - Restore driver known stations to device
717 * All stations considered active by driver, but not present in ucode, is
722 void iwl_restore_stations(struct iwl_priv
*priv
, struct iwl_rxon_context
*ctx
)
724 struct iwl_addsta_cmd sta_cmd
;
725 struct iwl_link_quality_cmd lq
;
731 if (!iwl_is_ready(priv
)) {
733 "Not ready yet, not restoring any stations.\n");
737 IWL_DEBUG_ASSOC(priv
, "Restoring all known stations ... start.\n");
738 spin_lock_bh(&priv
->sta_lock
);
739 for (i
= 0; i
< IWLAGN_STATION_COUNT
; i
++) {
740 if (ctx
->ctxid
!= priv
->stations
[i
].ctxid
)
742 if ((priv
->stations
[i
].used
& IWL_STA_DRIVER_ACTIVE
) &&
743 !(priv
->stations
[i
].used
& IWL_STA_UCODE_ACTIVE
)) {
744 IWL_DEBUG_ASSOC(priv
, "Restoring sta %pM\n",
745 priv
->stations
[i
].sta
.sta
.addr
);
746 priv
->stations
[i
].sta
.mode
= 0;
747 priv
->stations
[i
].used
|= IWL_STA_UCODE_INPROGRESS
;
752 for (i
= 0; i
< IWLAGN_STATION_COUNT
; i
++) {
753 if ((priv
->stations
[i
].used
& IWL_STA_UCODE_INPROGRESS
)) {
754 memcpy(&sta_cmd
, &priv
->stations
[i
].sta
,
755 sizeof(struct iwl_addsta_cmd
));
757 if (priv
->stations
[i
].lq
) {
759 iwl_sta_fill_lq(priv
, ctx
, i
, &lq
);
761 memcpy(&lq
, priv
->stations
[i
].lq
,
762 sizeof(struct iwl_link_quality_cmd
));
765 spin_unlock_bh(&priv
->sta_lock
);
766 ret
= iwl_send_add_sta(priv
, &sta_cmd
, CMD_SYNC
);
768 spin_lock_bh(&priv
->sta_lock
);
769 IWL_ERR(priv
, "Adding station %pM failed.\n",
770 priv
->stations
[i
].sta
.sta
.addr
);
771 priv
->stations
[i
].used
&=
772 ~IWL_STA_DRIVER_ACTIVE
;
773 priv
->stations
[i
].used
&=
774 ~IWL_STA_UCODE_INPROGRESS
;
778 * Rate scaling has already been initialized, send
782 iwl_send_lq_cmd(priv
, ctx
, &lq
,
784 spin_lock_bh(&priv
->sta_lock
);
785 priv
->stations
[i
].used
&= ~IWL_STA_UCODE_INPROGRESS
;
789 spin_unlock_bh(&priv
->sta_lock
);
791 IWL_DEBUG_INFO(priv
, "Restoring all known stations .... "
792 "no stations to be restored.\n");
794 IWL_DEBUG_INFO(priv
, "Restoring all known stations .... "
798 int iwl_get_free_ucode_key_offset(struct iwl_priv
*priv
)
802 for (i
= 0; i
< priv
->sta_key_max_num
; i
++)
803 if (!test_and_set_bit(i
, &priv
->ucode_key_table
))
806 return WEP_INVALID_OFFSET
;
809 void iwl_dealloc_bcast_stations(struct iwl_priv
*priv
)
813 spin_lock_bh(&priv
->sta_lock
);
814 for (i
= 0; i
< IWLAGN_STATION_COUNT
; i
++) {
815 if (!(priv
->stations
[i
].used
& IWL_STA_BCAST
))
818 priv
->stations
[i
].used
&= ~IWL_STA_UCODE_ACTIVE
;
819 priv
->num_stations
--;
820 if (WARN_ON(priv
->num_stations
< 0))
821 priv
->num_stations
= 0;
822 kfree(priv
->stations
[i
].lq
);
823 priv
->stations
[i
].lq
= NULL
;
825 spin_unlock_bh(&priv
->sta_lock
);
828 #ifdef CONFIG_IWLWIFI_DEBUG
829 static void iwl_dump_lq_cmd(struct iwl_priv
*priv
,
830 struct iwl_link_quality_cmd
*lq
)
833 IWL_DEBUG_RATE(priv
, "lq station id 0x%x\n", lq
->sta_id
);
834 IWL_DEBUG_RATE(priv
, "lq ant 0x%X 0x%X\n",
835 lq
->general_params
.single_stream_ant_msk
,
836 lq
->general_params
.dual_stream_ant_msk
);
838 for (i
= 0; i
< LINK_QUAL_MAX_RETRY_NUM
; i
++)
839 IWL_DEBUG_RATE(priv
, "lq index %d 0x%X\n",
840 i
, lq
->rs_table
[i
].rate_n_flags
);
843 static inline void iwl_dump_lq_cmd(struct iwl_priv
*priv
,
844 struct iwl_link_quality_cmd
*lq
)
850 * is_lq_table_valid() - Test one aspect of LQ cmd for validity
852 * It sometimes happens when a HT rate has been in use and we
853 * loose connectivity with AP then mac80211 will first tell us that the
854 * current channel is not HT anymore before removing the station. In such a
855 * scenario the RXON flags will be updated to indicate we are not
856 * communicating HT anymore, but the LQ command may still contain HT rates.
857 * Test for this to prevent driver from sending LQ command between the time
858 * RXON flags are updated and when LQ command is updated.
860 static bool is_lq_table_valid(struct iwl_priv
*priv
,
861 struct iwl_rxon_context
*ctx
,
862 struct iwl_link_quality_cmd
*lq
)
869 IWL_DEBUG_INFO(priv
, "Channel %u is not an HT channel\n",
870 ctx
->active
.channel
);
871 for (i
= 0; i
< LINK_QUAL_MAX_RETRY_NUM
; i
++) {
872 if (le32_to_cpu(lq
->rs_table
[i
].rate_n_flags
) &
875 "index %d of LQ expects HT channel\n",
884 * iwl_send_lq_cmd() - Send link quality command
885 * @init: This command is sent as part of station initialization right
886 * after station has been added.
888 * The link quality command is sent as the last step of station creation.
889 * This is the special case in which init is set and we call a callback in
890 * this case to clear the state indicating that station creation is in
893 int iwl_send_lq_cmd(struct iwl_priv
*priv
, struct iwl_rxon_context
*ctx
,
894 struct iwl_link_quality_cmd
*lq
, u8 flags
, bool init
)
897 struct iwl_host_cmd cmd
= {
898 .id
= REPLY_TX_LINK_QUALITY_CMD
,
899 .len
= { sizeof(struct iwl_link_quality_cmd
), },
904 if (WARN_ON(lq
->sta_id
== IWL_INVALID_STATION
))
908 spin_lock_bh(&priv
->sta_lock
);
909 if (!(priv
->stations
[lq
->sta_id
].used
& IWL_STA_DRIVER_ACTIVE
)) {
910 spin_unlock_bh(&priv
->sta_lock
);
913 spin_unlock_bh(&priv
->sta_lock
);
915 iwl_dump_lq_cmd(priv
, lq
);
916 if (WARN_ON(init
&& (cmd
.flags
& CMD_ASYNC
)))
919 if (is_lq_table_valid(priv
, ctx
, lq
))
920 ret
= iwl_dvm_send_cmd(priv
, &cmd
);
924 if (cmd
.flags
& CMD_ASYNC
)
928 IWL_DEBUG_INFO(priv
, "init LQ command complete, "
929 "clearing sta addition status for sta %d\n",
931 spin_lock_bh(&priv
->sta_lock
);
932 priv
->stations
[lq
->sta_id
].used
&= ~IWL_STA_UCODE_INPROGRESS
;
933 spin_unlock_bh(&priv
->sta_lock
);
939 static struct iwl_link_quality_cmd
*
940 iwl_sta_alloc_lq(struct iwl_priv
*priv
, struct iwl_rxon_context
*ctx
,
943 struct iwl_link_quality_cmd
*link_cmd
;
945 link_cmd
= kzalloc(sizeof(struct iwl_link_quality_cmd
), GFP_KERNEL
);
947 IWL_ERR(priv
, "Unable to allocate memory for LQ cmd.\n");
951 iwl_sta_fill_lq(priv
, ctx
, sta_id
, link_cmd
);
957 * iwlagn_add_bssid_station - Add the special IBSS BSSID station
961 int iwlagn_add_bssid_station(struct iwl_priv
*priv
,
962 struct iwl_rxon_context
*ctx
,
963 const u8
*addr
, u8
*sta_id_r
)
967 struct iwl_link_quality_cmd
*link_cmd
;
970 *sta_id_r
= IWL_INVALID_STATION
;
972 ret
= iwl_add_station_common(priv
, ctx
, addr
, 0, NULL
, &sta_id
);
974 IWL_ERR(priv
, "Unable to add station %pM\n", addr
);
981 spin_lock_bh(&priv
->sta_lock
);
982 priv
->stations
[sta_id
].used
|= IWL_STA_LOCAL
;
983 spin_unlock_bh(&priv
->sta_lock
);
985 /* Set up default rate scaling table in device's station table */
986 link_cmd
= iwl_sta_alloc_lq(priv
, ctx
, sta_id
);
989 "Unable to initialize rate scaling for station %pM.\n",
994 ret
= iwl_send_lq_cmd(priv
, ctx
, link_cmd
, CMD_SYNC
, true);
996 IWL_ERR(priv
, "Link quality command failed (%d)\n", ret
);
998 spin_lock_bh(&priv
->sta_lock
);
999 priv
->stations
[sta_id
].lq
= link_cmd
;
1000 spin_unlock_bh(&priv
->sta_lock
);
1008 * For each context, the device has a table of 4 static WEP keys
1009 * (one for each key index) that is updated with the following
1013 static int iwl_send_static_wepkey_cmd(struct iwl_priv
*priv
,
1014 struct iwl_rxon_context
*ctx
,
1017 int i
, not_empty
= 0;
1018 u8 buff
[sizeof(struct iwl_wep_cmd
) +
1019 sizeof(struct iwl_wep_key
) * WEP_KEYS_MAX
];
1020 struct iwl_wep_cmd
*wep_cmd
= (struct iwl_wep_cmd
*)buff
;
1021 size_t cmd_size
= sizeof(struct iwl_wep_cmd
);
1022 struct iwl_host_cmd cmd
= {
1023 .id
= ctx
->wep_key_cmd
,
1024 .data
= { wep_cmd
, },
1030 memset(wep_cmd
, 0, cmd_size
+
1031 (sizeof(struct iwl_wep_key
) * WEP_KEYS_MAX
));
1033 for (i
= 0; i
< WEP_KEYS_MAX
; i
++) {
1034 wep_cmd
->key
[i
].key_index
= i
;
1035 if (ctx
->wep_keys
[i
].key_size
) {
1036 wep_cmd
->key
[i
].key_offset
= i
;
1039 wep_cmd
->key
[i
].key_offset
= WEP_INVALID_OFFSET
;
1042 wep_cmd
->key
[i
].key_size
= ctx
->wep_keys
[i
].key_size
;
1043 memcpy(&wep_cmd
->key
[i
].key
[3], ctx
->wep_keys
[i
].key
,
1044 ctx
->wep_keys
[i
].key_size
);
1047 wep_cmd
->global_key_type
= WEP_KEY_WEP_TYPE
;
1048 wep_cmd
->num_keys
= WEP_KEYS_MAX
;
1050 cmd_size
+= sizeof(struct iwl_wep_key
) * WEP_KEYS_MAX
;
1052 cmd
.len
[0] = cmd_size
;
1054 if (not_empty
|| send_if_empty
)
1055 return iwl_dvm_send_cmd(priv
, &cmd
);
1060 int iwl_restore_default_wep_keys(struct iwl_priv
*priv
,
1061 struct iwl_rxon_context
*ctx
)
1063 lockdep_assert_held(&priv
->mutex
);
1065 return iwl_send_static_wepkey_cmd(priv
, ctx
, false);
1068 int iwl_remove_default_wep_key(struct iwl_priv
*priv
,
1069 struct iwl_rxon_context
*ctx
,
1070 struct ieee80211_key_conf
*keyconf
)
1074 lockdep_assert_held(&priv
->mutex
);
1076 IWL_DEBUG_WEP(priv
, "Removing default WEP key: idx=%d\n",
1079 memset(&ctx
->wep_keys
[keyconf
->keyidx
], 0, sizeof(ctx
->wep_keys
[0]));
1080 if (iwl_is_rfkill(priv
)) {
1082 "Not sending REPLY_WEPKEY command due to RFKILL.\n");
1083 /* but keys in device are clear anyway so return success */
1086 ret
= iwl_send_static_wepkey_cmd(priv
, ctx
, 1);
1087 IWL_DEBUG_WEP(priv
, "Remove default WEP key: idx=%d ret=%d\n",
1088 keyconf
->keyidx
, ret
);
1093 int iwl_set_default_wep_key(struct iwl_priv
*priv
,
1094 struct iwl_rxon_context
*ctx
,
1095 struct ieee80211_key_conf
*keyconf
)
1099 lockdep_assert_held(&priv
->mutex
);
1101 if (keyconf
->keylen
!= WEP_KEY_LEN_128
&&
1102 keyconf
->keylen
!= WEP_KEY_LEN_64
) {
1104 "Bad WEP key length %d\n", keyconf
->keylen
);
1108 keyconf
->hw_key_idx
= IWLAGN_HW_KEY_DEFAULT
;
1110 ctx
->wep_keys
[keyconf
->keyidx
].key_size
= keyconf
->keylen
;
1111 memcpy(&ctx
->wep_keys
[keyconf
->keyidx
].key
, &keyconf
->key
,
1114 ret
= iwl_send_static_wepkey_cmd(priv
, ctx
, false);
1115 IWL_DEBUG_WEP(priv
, "Set default WEP key: len=%d idx=%d ret=%d\n",
1116 keyconf
->keylen
, keyconf
->keyidx
, ret
);
1122 * dynamic (per-station) keys
1124 * The dynamic keys are a little more complicated. The device has
1125 * a key cache of up to STA_KEY_MAX_NUM/STA_KEY_MAX_NUM_PAN keys.
1126 * These are linked to stations by a table that contains an index
1127 * into the key table for each station/key index/{mcast,unicast},
1128 * i.e. it's basically an array of pointers like this:
1129 * key_offset_t key_mapping[NUM_STATIONS][4][2];
1130 * (it really works differently, but you can think of it as such)
1132 * The key uploading and linking happens in the same command, the
1133 * add station command with STA_MODIFY_KEY_MASK.
1136 static u8
iwlagn_key_sta_id(struct iwl_priv
*priv
,
1137 struct ieee80211_vif
*vif
,
1138 struct ieee80211_sta
*sta
)
1140 struct iwl_vif_priv
*vif_priv
= (void *)vif
->drv_priv
;
1143 return iwl_sta_id(sta
);
1146 * The device expects GTKs for station interfaces to be
1147 * installed as GTKs for the AP station. If we have no
1148 * station ID, then use the ap_sta_id in that case.
1150 if (vif
->type
== NL80211_IFTYPE_STATION
&& vif_priv
->ctx
)
1151 return vif_priv
->ctx
->ap_sta_id
;
1153 return IWL_INVALID_STATION
;
1156 static int iwlagn_send_sta_key(struct iwl_priv
*priv
,
1157 struct ieee80211_key_conf
*keyconf
,
1158 u8 sta_id
, u32 tkip_iv32
, u16
*tkip_p1k
,
1162 struct iwl_addsta_cmd sta_cmd
;
1165 spin_lock_bh(&priv
->sta_lock
);
1166 memcpy(&sta_cmd
, &priv
->stations
[sta_id
].sta
, sizeof(sta_cmd
));
1167 spin_unlock_bh(&priv
->sta_lock
);
1169 key_flags
= cpu_to_le16(keyconf
->keyidx
<< STA_KEY_FLG_KEYID_POS
);
1170 key_flags
|= STA_KEY_FLG_MAP_KEY_MSK
;
1172 switch (keyconf
->cipher
) {
1173 case WLAN_CIPHER_SUITE_CCMP
:
1174 key_flags
|= STA_KEY_FLG_CCMP
;
1175 memcpy(sta_cmd
.key
.key
, keyconf
->key
, keyconf
->keylen
);
1177 case WLAN_CIPHER_SUITE_TKIP
:
1178 key_flags
|= STA_KEY_FLG_TKIP
;
1179 sta_cmd
.key
.tkip_rx_tsc_byte2
= tkip_iv32
;
1180 for (i
= 0; i
< 5; i
++)
1181 sta_cmd
.key
.tkip_rx_ttak
[i
] = cpu_to_le16(tkip_p1k
[i
]);
1182 memcpy(sta_cmd
.key
.key
, keyconf
->key
, keyconf
->keylen
);
1184 case WLAN_CIPHER_SUITE_WEP104
:
1185 key_flags
|= STA_KEY_FLG_KEY_SIZE_MSK
;
1187 case WLAN_CIPHER_SUITE_WEP40
:
1188 key_flags
|= STA_KEY_FLG_WEP
;
1189 memcpy(&sta_cmd
.key
.key
[3], keyconf
->key
, keyconf
->keylen
);
1196 if (!(keyconf
->flags
& IEEE80211_KEY_FLAG_PAIRWISE
))
1197 key_flags
|= STA_KEY_MULTICAST_MSK
;
1199 /* key pointer (offset) */
1200 sta_cmd
.key
.key_offset
= keyconf
->hw_key_idx
;
1202 sta_cmd
.key
.key_flags
= key_flags
;
1203 sta_cmd
.mode
= STA_CONTROL_MODIFY_MSK
;
1204 sta_cmd
.sta
.modify_mask
= STA_MODIFY_KEY_MASK
;
1206 return iwl_send_add_sta(priv
, &sta_cmd
, cmd_flags
);
1209 void iwl_update_tkip_key(struct iwl_priv
*priv
,
1210 struct ieee80211_vif
*vif
,
1211 struct ieee80211_key_conf
*keyconf
,
1212 struct ieee80211_sta
*sta
, u32 iv32
, u16
*phase1key
)
1214 u8 sta_id
= iwlagn_key_sta_id(priv
, vif
, sta
);
1216 if (sta_id
== IWL_INVALID_STATION
)
1219 if (iwl_scan_cancel(priv
)) {
1220 /* cancel scan failed, just live w/ bad key and rely
1221 briefly on SW decryption */
1225 iwlagn_send_sta_key(priv
, keyconf
, sta_id
,
1226 iv32
, phase1key
, CMD_ASYNC
);
1229 int iwl_remove_dynamic_key(struct iwl_priv
*priv
,
1230 struct iwl_rxon_context
*ctx
,
1231 struct ieee80211_key_conf
*keyconf
,
1232 struct ieee80211_sta
*sta
)
1234 struct iwl_addsta_cmd sta_cmd
;
1235 u8 sta_id
= iwlagn_key_sta_id(priv
, ctx
->vif
, sta
);
1238 /* if station isn't there, neither is the key */
1239 if (sta_id
== IWL_INVALID_STATION
)
1242 spin_lock_bh(&priv
->sta_lock
);
1243 memcpy(&sta_cmd
, &priv
->stations
[sta_id
].sta
, sizeof(sta_cmd
));
1244 if (!(priv
->stations
[sta_id
].used
& IWL_STA_UCODE_ACTIVE
))
1245 sta_id
= IWL_INVALID_STATION
;
1246 spin_unlock_bh(&priv
->sta_lock
);
1248 if (sta_id
== IWL_INVALID_STATION
)
1251 lockdep_assert_held(&priv
->mutex
);
1253 ctx
->key_mapping_keys
--;
1255 IWL_DEBUG_WEP(priv
, "Remove dynamic key: idx=%d sta=%d\n",
1256 keyconf
->keyidx
, sta_id
);
1258 if (!test_and_clear_bit(keyconf
->hw_key_idx
, &priv
->ucode_key_table
))
1259 IWL_ERR(priv
, "offset %d not used in uCode key table.\n",
1260 keyconf
->hw_key_idx
);
1262 key_flags
= cpu_to_le16(keyconf
->keyidx
<< STA_KEY_FLG_KEYID_POS
);
1263 key_flags
|= STA_KEY_FLG_MAP_KEY_MSK
| STA_KEY_FLG_NO_ENC
|
1264 STA_KEY_FLG_INVALID
;
1266 if (!(keyconf
->flags
& IEEE80211_KEY_FLAG_PAIRWISE
))
1267 key_flags
|= STA_KEY_MULTICAST_MSK
;
1269 sta_cmd
.key
.key_flags
= key_flags
;
1270 sta_cmd
.key
.key_offset
= keyconf
->hw_key_idx
;
1271 sta_cmd
.sta
.modify_mask
= STA_MODIFY_KEY_MASK
;
1272 sta_cmd
.mode
= STA_CONTROL_MODIFY_MSK
;
1274 return iwl_send_add_sta(priv
, &sta_cmd
, CMD_SYNC
);
1277 int iwl_set_dynamic_key(struct iwl_priv
*priv
,
1278 struct iwl_rxon_context
*ctx
,
1279 struct ieee80211_key_conf
*keyconf
,
1280 struct ieee80211_sta
*sta
)
1282 struct ieee80211_key_seq seq
;
1285 u8 sta_id
= iwlagn_key_sta_id(priv
, ctx
->vif
, sta
);
1288 if (sta_id
== IWL_INVALID_STATION
)
1291 lockdep_assert_held(&priv
->mutex
);
1293 keyconf
->hw_key_idx
= iwl_get_free_ucode_key_offset(priv
);
1294 if (keyconf
->hw_key_idx
== WEP_INVALID_OFFSET
)
1297 ctx
->key_mapping_keys
++;
1299 switch (keyconf
->cipher
) {
1300 case WLAN_CIPHER_SUITE_TKIP
:
1303 else /* station mode case only */
1304 addr
= ctx
->active
.bssid_addr
;
1306 /* pre-fill phase 1 key into device cache */
1307 ieee80211_get_key_rx_seq(keyconf
, 0, &seq
);
1308 ieee80211_get_tkip_rx_p1k(keyconf
, addr
, seq
.tkip
.iv32
, p1k
);
1309 ret
= iwlagn_send_sta_key(priv
, keyconf
, sta_id
,
1310 seq
.tkip
.iv32
, p1k
, CMD_SYNC
);
1312 case WLAN_CIPHER_SUITE_CCMP
:
1313 case WLAN_CIPHER_SUITE_WEP40
:
1314 case WLAN_CIPHER_SUITE_WEP104
:
1315 ret
= iwlagn_send_sta_key(priv
, keyconf
, sta_id
,
1319 IWL_ERR(priv
, "Unknown cipher %x\n", keyconf
->cipher
);
1324 ctx
->key_mapping_keys
--;
1325 clear_bit(keyconf
->hw_key_idx
, &priv
->ucode_key_table
);
1328 IWL_DEBUG_WEP(priv
, "Set dynamic key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n",
1329 keyconf
->cipher
, keyconf
->keylen
, keyconf
->keyidx
,
1330 sta
? sta
->addr
: NULL
, ret
);
1336 * iwlagn_alloc_bcast_station - add broadcast station into driver's station table.
1338 * This adds the broadcast station into the driver's station table
1339 * and marks it driver active, so that it will be restored to the
1340 * device at the next best time.
1342 int iwlagn_alloc_bcast_station(struct iwl_priv
*priv
,
1343 struct iwl_rxon_context
*ctx
)
1345 struct iwl_link_quality_cmd
*link_cmd
;
1348 spin_lock_bh(&priv
->sta_lock
);
1349 sta_id
= iwl_prep_station(priv
, ctx
, iwl_bcast_addr
, false, NULL
);
1350 if (sta_id
== IWL_INVALID_STATION
) {
1351 IWL_ERR(priv
, "Unable to prepare broadcast station\n");
1352 spin_unlock_bh(&priv
->sta_lock
);
1357 priv
->stations
[sta_id
].used
|= IWL_STA_DRIVER_ACTIVE
;
1358 priv
->stations
[sta_id
].used
|= IWL_STA_BCAST
;
1359 spin_unlock_bh(&priv
->sta_lock
);
1361 link_cmd
= iwl_sta_alloc_lq(priv
, ctx
, sta_id
);
1364 "Unable to initialize rate scaling for bcast station.\n");
1368 spin_lock_bh(&priv
->sta_lock
);
1369 priv
->stations
[sta_id
].lq
= link_cmd
;
1370 spin_unlock_bh(&priv
->sta_lock
);
1376 * iwl_update_bcast_station - update broadcast station's LQ command
1378 * Only used by iwlagn. Placed here to have all bcast station management
1381 int iwl_update_bcast_station(struct iwl_priv
*priv
,
1382 struct iwl_rxon_context
*ctx
)
1384 struct iwl_link_quality_cmd
*link_cmd
;
1385 u8 sta_id
= ctx
->bcast_sta_id
;
1387 link_cmd
= iwl_sta_alloc_lq(priv
, ctx
, sta_id
);
1389 IWL_ERR(priv
, "Unable to initialize rate scaling for bcast station.\n");
1393 spin_lock_bh(&priv
->sta_lock
);
1394 if (priv
->stations
[sta_id
].lq
)
1395 kfree(priv
->stations
[sta_id
].lq
);
1397 IWL_DEBUG_INFO(priv
, "Bcast station rate scaling has not been initialized yet.\n");
1398 priv
->stations
[sta_id
].lq
= link_cmd
;
1399 spin_unlock_bh(&priv
->sta_lock
);
1404 int iwl_update_bcast_stations(struct iwl_priv
*priv
)
1406 struct iwl_rxon_context
*ctx
;
1409 for_each_context(priv
, ctx
) {
1410 ret
= iwl_update_bcast_station(priv
, ctx
);
1419 * iwl_sta_tx_modify_enable_tid - Enable Tx for this TID in station table
1421 int iwl_sta_tx_modify_enable_tid(struct iwl_priv
*priv
, int sta_id
, int tid
)
1423 struct iwl_addsta_cmd sta_cmd
;
1425 lockdep_assert_held(&priv
->mutex
);
1427 /* Remove "disable" flag, to enable Tx for this TID */
1428 spin_lock_bh(&priv
->sta_lock
);
1429 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_TID_DISABLE_TX
;
1430 priv
->stations
[sta_id
].sta
.tid_disable_tx
&= cpu_to_le16(~(1 << tid
));
1431 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
1432 memcpy(&sta_cmd
, &priv
->stations
[sta_id
].sta
, sizeof(struct iwl_addsta_cmd
));
1433 spin_unlock_bh(&priv
->sta_lock
);
1435 return iwl_send_add_sta(priv
, &sta_cmd
, CMD_SYNC
);
1438 int iwl_sta_rx_agg_start(struct iwl_priv
*priv
, struct ieee80211_sta
*sta
,
1442 struct iwl_addsta_cmd sta_cmd
;
1444 lockdep_assert_held(&priv
->mutex
);
1446 sta_id
= iwl_sta_id(sta
);
1447 if (sta_id
== IWL_INVALID_STATION
)
1450 spin_lock_bh(&priv
->sta_lock
);
1451 priv
->stations
[sta_id
].sta
.station_flags_msk
= 0;
1452 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_ADDBA_TID_MSK
;
1453 priv
->stations
[sta_id
].sta
.add_immediate_ba_tid
= (u8
)tid
;
1454 priv
->stations
[sta_id
].sta
.add_immediate_ba_ssn
= cpu_to_le16(ssn
);
1455 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
1456 memcpy(&sta_cmd
, &priv
->stations
[sta_id
].sta
, sizeof(struct iwl_addsta_cmd
));
1457 spin_unlock_bh(&priv
->sta_lock
);
1459 return iwl_send_add_sta(priv
, &sta_cmd
, CMD_SYNC
);
1462 int iwl_sta_rx_agg_stop(struct iwl_priv
*priv
, struct ieee80211_sta
*sta
,
1466 struct iwl_addsta_cmd sta_cmd
;
1468 lockdep_assert_held(&priv
->mutex
);
1470 sta_id
= iwl_sta_id(sta
);
1471 if (sta_id
== IWL_INVALID_STATION
) {
1472 IWL_ERR(priv
, "Invalid station for AGG tid %d\n", tid
);
1476 spin_lock_bh(&priv
->sta_lock
);
1477 priv
->stations
[sta_id
].sta
.station_flags_msk
= 0;
1478 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_DELBA_TID_MSK
;
1479 priv
->stations
[sta_id
].sta
.remove_immediate_ba_tid
= (u8
)tid
;
1480 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
1481 memcpy(&sta_cmd
, &priv
->stations
[sta_id
].sta
, sizeof(struct iwl_addsta_cmd
));
1482 spin_unlock_bh(&priv
->sta_lock
);
1484 return iwl_send_add_sta(priv
, &sta_cmd
, CMD_SYNC
);
1489 void iwl_sta_modify_sleep_tx_count(struct iwl_priv
*priv
, int sta_id
, int cnt
)
1491 struct iwl_addsta_cmd cmd
= {
1492 .mode
= STA_CONTROL_MODIFY_MSK
,
1493 .station_flags
= STA_FLG_PWR_SAVE_MSK
,
1494 .station_flags_msk
= STA_FLG_PWR_SAVE_MSK
,
1495 .sta
.sta_id
= sta_id
,
1496 .sta
.modify_mask
= STA_MODIFY_SLEEP_TX_COUNT_MSK
,
1497 .sleep_tx_count
= cpu_to_le16(cnt
),
1500 iwl_send_add_sta(priv
, &cmd
, CMD_ASYNC
);