1 /******************************************************************************
3 * Copyright(c) 2003 - 2009 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 *****************************************************************************/
30 #include <net/mac80211.h>
31 #include <linux/etherdevice.h>
37 #define IWL_STA_DRIVER_ACTIVE BIT(0) /* driver entry is active */
38 #define IWL_STA_UCODE_ACTIVE BIT(1) /* ucode entry is active */
40 u8
iwl_find_station(struct iwl_priv
*priv
, const u8
*addr
)
44 int ret
= IWL_INVALID_STATION
;
47 if ((priv
->iw_mode
== NL80211_IFTYPE_ADHOC
) ||
48 (priv
->iw_mode
== NL80211_IFTYPE_AP
))
51 if (is_broadcast_ether_addr(addr
))
52 return priv
->hw_params
.bcast_sta_id
;
54 spin_lock_irqsave(&priv
->sta_lock
, flags
);
55 for (i
= start
; i
< priv
->hw_params
.max_stations
; i
++)
56 if (priv
->stations
[i
].used
&&
57 (!compare_ether_addr(priv
->stations
[i
].sta
.sta
.addr
,
63 IWL_DEBUG_ASSOC_LIMIT(priv
, "can not find STA %pM total %d\n",
64 addr
, priv
->num_stations
);
67 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
70 EXPORT_SYMBOL(iwl_find_station
);
72 int iwl_get_ra_sta_id(struct iwl_priv
*priv
, struct ieee80211_hdr
*hdr
)
74 if (priv
->iw_mode
== NL80211_IFTYPE_STATION
) {
77 u8
*da
= ieee80211_get_DA(hdr
);
78 return iwl_find_station(priv
, da
);
81 EXPORT_SYMBOL(iwl_get_ra_sta_id
);
83 static void iwl_sta_ucode_activate(struct iwl_priv
*priv
, u8 sta_id
)
87 spin_lock_irqsave(&priv
->sta_lock
, flags
);
89 if (!(priv
->stations
[sta_id
].used
& IWL_STA_DRIVER_ACTIVE
))
90 IWL_ERR(priv
, "ACTIVATE a non DRIVER active station %d\n",
93 priv
->stations
[sta_id
].used
|= IWL_STA_UCODE_ACTIVE
;
94 IWL_DEBUG_ASSOC(priv
, "Added STA to Ucode: %pM\n",
95 priv
->stations
[sta_id
].sta
.sta
.addr
);
97 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
100 static int iwl_add_sta_callback(struct iwl_priv
*priv
,
101 struct iwl_cmd
*cmd
, struct sk_buff
*skb
)
103 struct iwl_rx_packet
*res
= NULL
;
104 struct iwl_addsta_cmd
*addsta
=
105 (struct iwl_addsta_cmd
*)cmd
->cmd
.payload
;
106 u8 sta_id
= addsta
->sta
.sta_id
;
109 IWL_ERR(priv
, "Error: Response NULL in REPLY_ADD_STA.\n");
113 res
= (struct iwl_rx_packet
*)skb
->data
;
114 if (res
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
115 IWL_ERR(priv
, "Bad return from REPLY_ADD_STA (0x%08X)\n",
120 switch (res
->u
.add_sta
.status
) {
121 case ADD_STA_SUCCESS_MSK
:
122 iwl_sta_ucode_activate(priv
, sta_id
);
125 IWL_DEBUG_HC(priv
, "Received REPLY_ADD_STA:(0x%08X)\n",
126 res
->u
.add_sta
.status
);
130 /* We didn't cache the SKB; let the caller free it */
134 int iwl_send_add_sta(struct iwl_priv
*priv
,
135 struct iwl_addsta_cmd
*sta
, u8 flags
)
137 struct iwl_rx_packet
*res
= NULL
;
139 u8 data
[sizeof(*sta
)];
140 struct iwl_host_cmd cmd
= {
146 if (flags
& CMD_ASYNC
)
147 cmd
.meta
.u
.callback
= iwl_add_sta_callback
;
149 cmd
.meta
.flags
|= CMD_WANT_SKB
;
151 cmd
.len
= priv
->cfg
->ops
->utils
->build_addsta_hcmd(sta
, data
);
152 ret
= iwl_send_cmd(priv
, &cmd
);
154 if (ret
|| (flags
& CMD_ASYNC
))
157 res
= (struct iwl_rx_packet
*)cmd
.meta
.u
.skb
->data
;
158 if (res
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
159 IWL_ERR(priv
, "Bad return from REPLY_ADD_STA (0x%08X)\n",
165 switch (res
->u
.add_sta
.status
) {
166 case ADD_STA_SUCCESS_MSK
:
167 iwl_sta_ucode_activate(priv
, sta
->sta
.sta_id
);
168 IWL_DEBUG_INFO(priv
, "REPLY_ADD_STA PASSED\n");
172 IWL_WARN(priv
, "REPLY_ADD_STA failed\n");
177 priv
->alloc_rxb_skb
--;
178 dev_kfree_skb_any(cmd
.meta
.u
.skb
);
182 EXPORT_SYMBOL(iwl_send_add_sta
);
184 static void iwl_set_ht_add_station(struct iwl_priv
*priv
, u8 index
,
185 struct ieee80211_sta_ht_cap
*sta_ht_inf
)
190 if (!sta_ht_inf
|| !sta_ht_inf
->ht_supported
)
193 mimo_ps_mode
= (sta_ht_inf
->cap
& IEEE80211_HT_CAP_SM_PS
) >> 2;
195 sta_flags
= priv
->stations
[index
].sta
.station_flags
;
197 sta_flags
&= ~(STA_FLG_RTS_MIMO_PROT_MSK
| STA_FLG_MIMO_DIS_MSK
);
199 switch (mimo_ps_mode
) {
200 case WLAN_HT_CAP_SM_PS_STATIC
:
201 sta_flags
|= STA_FLG_MIMO_DIS_MSK
;
203 case WLAN_HT_CAP_SM_PS_DYNAMIC
:
204 sta_flags
|= STA_FLG_RTS_MIMO_PROT_MSK
;
206 case WLAN_HT_CAP_SM_PS_DISABLED
:
209 IWL_WARN(priv
, "Invalid MIMO PS mode %d\n", mimo_ps_mode
);
213 sta_flags
|= cpu_to_le32(
214 (u32
)sta_ht_inf
->ampdu_factor
<< STA_FLG_MAX_AGG_SIZE_POS
);
216 sta_flags
|= cpu_to_le32(
217 (u32
)sta_ht_inf
->ampdu_density
<< STA_FLG_AGG_MPDU_DENSITY_POS
);
219 if (iwl_is_fat_tx_allowed(priv
, sta_ht_inf
))
220 sta_flags
|= STA_FLG_FAT_EN_MSK
;
222 sta_flags
&= ~STA_FLG_FAT_EN_MSK
;
224 priv
->stations
[index
].sta
.station_flags
= sta_flags
;
230 * iwl_add_station - Add station to tables in driver and device
232 u8
iwl_add_station(struct iwl_priv
*priv
, const u8
*addr
, bool is_ap
, u8 flags
,
233 struct ieee80211_sta_ht_cap
*ht_info
)
235 struct iwl_station_entry
*station
;
236 unsigned long flags_spin
;
238 int sta_id
= IWL_INVALID_STATION
;
241 spin_lock_irqsave(&priv
->sta_lock
, flags_spin
);
244 else if (is_broadcast_ether_addr(addr
))
245 sta_id
= priv
->hw_params
.bcast_sta_id
;
247 for (i
= IWL_STA_ID
; i
< priv
->hw_params
.max_stations
; i
++) {
248 if (!compare_ether_addr(priv
->stations
[i
].sta
.sta
.addr
,
254 if (!priv
->stations
[i
].used
&&
255 sta_id
== IWL_INVALID_STATION
)
259 /* These two conditions have the same outcome, but keep them separate
260 since they have different meanings */
261 if (unlikely(sta_id
== IWL_INVALID_STATION
)) {
262 spin_unlock_irqrestore(&priv
->sta_lock
, flags_spin
);
266 if (priv
->stations
[sta_id
].used
&&
267 !compare_ether_addr(priv
->stations
[sta_id
].sta
.sta
.addr
, addr
)) {
268 spin_unlock_irqrestore(&priv
->sta_lock
, flags_spin
);
273 station
= &priv
->stations
[sta_id
];
274 station
->used
= IWL_STA_DRIVER_ACTIVE
;
275 IWL_DEBUG_ASSOC(priv
, "Add STA to driver ID %d: %pM\n",
277 priv
->num_stations
++;
279 /* Set up the REPLY_ADD_STA command to send to device */
280 memset(&station
->sta
, 0, sizeof(struct iwl_addsta_cmd
));
281 memcpy(station
->sta
.sta
.addr
, addr
, ETH_ALEN
);
282 station
->sta
.mode
= 0;
283 station
->sta
.sta
.sta_id
= sta_id
;
284 station
->sta
.station_flags
= 0;
286 /* BCAST station and IBSS stations do not work in HT mode */
287 if (sta_id
!= priv
->hw_params
.bcast_sta_id
&&
288 priv
->iw_mode
!= NL80211_IFTYPE_ADHOC
)
289 iwl_set_ht_add_station(priv
, sta_id
, ht_info
);
292 rate
= (priv
->band
== IEEE80211_BAND_5GHZ
) ?
293 IWL_RATE_6M_PLCP
: IWL_RATE_1M_PLCP
;
294 /* Turn on both antennas for the station... */
295 station
->sta
.rate_n_flags
= cpu_to_le16(rate
| RATE_MCS_ANT_AB_MSK
);
297 spin_unlock_irqrestore(&priv
->sta_lock
, flags_spin
);
299 /* Add station to device's station table */
300 iwl_send_add_sta(priv
, &station
->sta
, flags
);
304 EXPORT_SYMBOL(iwl_add_station
);
306 static void iwl_sta_ucode_deactivate(struct iwl_priv
*priv
, const char *addr
)
309 u8 sta_id
= iwl_find_station(priv
, addr
);
311 BUG_ON(sta_id
== IWL_INVALID_STATION
);
313 IWL_DEBUG_ASSOC(priv
, "Removed STA from Ucode: %pM\n", addr
);
315 spin_lock_irqsave(&priv
->sta_lock
, flags
);
317 /* Ucode must be active and driver must be non active */
318 if (priv
->stations
[sta_id
].used
!= IWL_STA_UCODE_ACTIVE
)
319 IWL_ERR(priv
, "removed non active STA %d\n", sta_id
);
321 priv
->stations
[sta_id
].used
&= ~IWL_STA_UCODE_ACTIVE
;
323 memset(&priv
->stations
[sta_id
], 0, sizeof(struct iwl_station_entry
));
324 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
327 static int iwl_remove_sta_callback(struct iwl_priv
*priv
,
328 struct iwl_cmd
*cmd
, struct sk_buff
*skb
)
330 struct iwl_rx_packet
*res
= NULL
;
331 struct iwl_rem_sta_cmd
*rm_sta
=
332 (struct iwl_rem_sta_cmd
*)cmd
->cmd
.payload
;
333 const char *addr
= rm_sta
->addr
;
336 IWL_ERR(priv
, "Error: Response NULL in REPLY_REMOVE_STA.\n");
340 res
= (struct iwl_rx_packet
*)skb
->data
;
341 if (res
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
342 IWL_ERR(priv
, "Bad return from REPLY_REMOVE_STA (0x%08X)\n",
347 switch (res
->u
.rem_sta
.status
) {
348 case REM_STA_SUCCESS_MSK
:
349 iwl_sta_ucode_deactivate(priv
, addr
);
352 IWL_ERR(priv
, "REPLY_REMOVE_STA failed\n");
356 /* We didn't cache the SKB; let the caller free it */
360 static int iwl_send_remove_station(struct iwl_priv
*priv
, const u8
*addr
,
363 struct iwl_rx_packet
*res
= NULL
;
366 struct iwl_rem_sta_cmd rm_sta_cmd
;
368 struct iwl_host_cmd cmd
= {
369 .id
= REPLY_REMOVE_STA
,
370 .len
= sizeof(struct iwl_rem_sta_cmd
),
375 memset(&rm_sta_cmd
, 0, sizeof(rm_sta_cmd
));
376 rm_sta_cmd
.num_sta
= 1;
377 memcpy(&rm_sta_cmd
.addr
, addr
, ETH_ALEN
);
379 if (flags
& CMD_ASYNC
)
380 cmd
.meta
.u
.callback
= iwl_remove_sta_callback
;
382 cmd
.meta
.flags
|= CMD_WANT_SKB
;
383 ret
= iwl_send_cmd(priv
, &cmd
);
385 if (ret
|| (flags
& CMD_ASYNC
))
388 res
= (struct iwl_rx_packet
*)cmd
.meta
.u
.skb
->data
;
389 if (res
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
390 IWL_ERR(priv
, "Bad return from REPLY_REMOVE_STA (0x%08X)\n",
396 switch (res
->u
.rem_sta
.status
) {
397 case REM_STA_SUCCESS_MSK
:
398 iwl_sta_ucode_deactivate(priv
, addr
);
399 IWL_DEBUG_ASSOC(priv
, "REPLY_REMOVE_STA PASSED\n");
403 IWL_ERR(priv
, "REPLY_REMOVE_STA failed\n");
408 priv
->alloc_rxb_skb
--;
409 dev_kfree_skb_any(cmd
.meta
.u
.skb
);
415 * iwl_remove_station - Remove driver's knowledge of station.
417 int iwl_remove_station(struct iwl_priv
*priv
, const u8
*addr
, bool is_ap
)
419 int sta_id
= IWL_INVALID_STATION
;
420 int i
, ret
= -EINVAL
;
423 spin_lock_irqsave(&priv
->sta_lock
, flags
);
427 else if (is_broadcast_ether_addr(addr
))
428 sta_id
= priv
->hw_params
.bcast_sta_id
;
430 for (i
= IWL_STA_ID
; i
< priv
->hw_params
.max_stations
; i
++)
431 if (priv
->stations
[i
].used
&&
432 !compare_ether_addr(priv
->stations
[i
].sta
.sta
.addr
,
438 if (unlikely(sta_id
== IWL_INVALID_STATION
))
441 IWL_DEBUG_ASSOC(priv
, "Removing STA from driver:%d %pM\n",
444 if (!(priv
->stations
[sta_id
].used
& IWL_STA_DRIVER_ACTIVE
)) {
445 IWL_ERR(priv
, "Removing %pM but non DRIVER active\n",
450 if (!(priv
->stations
[sta_id
].used
& IWL_STA_UCODE_ACTIVE
)) {
451 IWL_ERR(priv
, "Removing %pM but non UCODE active\n",
457 priv
->stations
[sta_id
].used
&= ~IWL_STA_DRIVER_ACTIVE
;
459 priv
->num_stations
--;
461 BUG_ON(priv
->num_stations
< 0);
463 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
465 ret
= iwl_send_remove_station(priv
, addr
, CMD_ASYNC
);
468 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
471 EXPORT_SYMBOL(iwl_remove_station
);
474 * iwl_clear_stations_table - Clear the driver's station table
476 * NOTE: This does not clear or otherwise alter the device's station table.
478 void iwl_clear_stations_table(struct iwl_priv
*priv
)
483 spin_lock_irqsave(&priv
->sta_lock
, flags
);
485 if (iwl_is_alive(priv
) &&
486 !test_bit(STATUS_EXIT_PENDING
, &priv
->status
) &&
487 iwl_send_cmd_pdu_async(priv
, REPLY_REMOVE_ALL_STA
, 0, NULL
, NULL
))
488 IWL_ERR(priv
, "Couldn't clear the station table\n");
490 priv
->num_stations
= 0;
491 memset(priv
->stations
, 0, sizeof(priv
->stations
));
493 /* clean ucode key table bit map */
494 priv
->ucode_key_table
= 0;
496 /* keep track of static keys */
497 for (i
= 0; i
< WEP_KEYS_MAX
; i
++) {
498 if (priv
->wep_keys
[i
].key_size
)
499 set_bit(i
, &priv
->ucode_key_table
);
502 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
504 EXPORT_SYMBOL(iwl_clear_stations_table
);
506 int iwl_get_free_ucode_key_index(struct iwl_priv
*priv
)
510 for (i
= 0; i
< STA_KEY_MAX_NUM
; i
++)
511 if (!test_and_set_bit(i
, &priv
->ucode_key_table
))
514 return WEP_INVALID_OFFSET
;
516 EXPORT_SYMBOL(iwl_get_free_ucode_key_index
);
518 int iwl_send_static_wepkey_cmd(struct iwl_priv
*priv
, u8 send_if_empty
)
520 int i
, not_empty
= 0;
521 u8 buff
[sizeof(struct iwl_wep_cmd
) +
522 sizeof(struct iwl_wep_key
) * WEP_KEYS_MAX
];
523 struct iwl_wep_cmd
*wep_cmd
= (struct iwl_wep_cmd
*)buff
;
524 size_t cmd_size
= sizeof(struct iwl_wep_cmd
);
525 struct iwl_host_cmd cmd
= {
528 .meta
.flags
= CMD_ASYNC
,
531 memset(wep_cmd
, 0, cmd_size
+
532 (sizeof(struct iwl_wep_key
) * WEP_KEYS_MAX
));
534 for (i
= 0; i
< WEP_KEYS_MAX
; i
++) {
535 wep_cmd
->key
[i
].key_index
= i
;
536 if (priv
->wep_keys
[i
].key_size
) {
537 wep_cmd
->key
[i
].key_offset
= i
;
540 wep_cmd
->key
[i
].key_offset
= WEP_INVALID_OFFSET
;
543 wep_cmd
->key
[i
].key_size
= priv
->wep_keys
[i
].key_size
;
544 memcpy(&wep_cmd
->key
[i
].key
[3], priv
->wep_keys
[i
].key
,
545 priv
->wep_keys
[i
].key_size
);
548 wep_cmd
->global_key_type
= WEP_KEY_WEP_TYPE
;
549 wep_cmd
->num_keys
= WEP_KEYS_MAX
;
551 cmd_size
+= sizeof(struct iwl_wep_key
) * WEP_KEYS_MAX
;
555 if (not_empty
|| send_if_empty
)
556 return iwl_send_cmd(priv
, &cmd
);
560 EXPORT_SYMBOL(iwl_send_static_wepkey_cmd
);
562 int iwl_remove_default_wep_key(struct iwl_priv
*priv
,
563 struct ieee80211_key_conf
*keyconf
)
568 spin_lock_irqsave(&priv
->sta_lock
, flags
);
569 IWL_DEBUG_WEP(priv
, "Removing default WEP key: idx=%d\n",
572 if (!test_and_clear_bit(keyconf
->keyidx
, &priv
->ucode_key_table
))
573 IWL_ERR(priv
, "index %d not used in uCode key table.\n",
576 priv
->default_wep_key
--;
577 memset(&priv
->wep_keys
[keyconf
->keyidx
], 0, sizeof(priv
->wep_keys
[0]));
578 if (iwl_is_rfkill(priv
)) {
579 IWL_DEBUG_WEP(priv
, "Not sending REPLY_WEPKEY command due to RFKILL.\n");
580 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
583 ret
= iwl_send_static_wepkey_cmd(priv
, 1);
584 IWL_DEBUG_WEP(priv
, "Remove default WEP key: idx=%d ret=%d\n",
585 keyconf
->keyidx
, ret
);
586 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
590 EXPORT_SYMBOL(iwl_remove_default_wep_key
);
592 int iwl_set_default_wep_key(struct iwl_priv
*priv
,
593 struct ieee80211_key_conf
*keyconf
)
598 if (keyconf
->keylen
!= WEP_KEY_LEN_128
&&
599 keyconf
->keylen
!= WEP_KEY_LEN_64
) {
600 IWL_DEBUG_WEP(priv
, "Bad WEP key length %d\n", keyconf
->keylen
);
604 keyconf
->flags
&= ~IEEE80211_KEY_FLAG_GENERATE_IV
;
605 keyconf
->hw_key_idx
= HW_KEY_DEFAULT
;
606 priv
->stations
[IWL_AP_ID
].keyinfo
.alg
= ALG_WEP
;
608 spin_lock_irqsave(&priv
->sta_lock
, flags
);
609 priv
->default_wep_key
++;
611 if (test_and_set_bit(keyconf
->keyidx
, &priv
->ucode_key_table
))
612 IWL_ERR(priv
, "index %d already used in uCode key table.\n",
615 priv
->wep_keys
[keyconf
->keyidx
].key_size
= keyconf
->keylen
;
616 memcpy(&priv
->wep_keys
[keyconf
->keyidx
].key
, &keyconf
->key
,
619 ret
= iwl_send_static_wepkey_cmd(priv
, 0);
620 IWL_DEBUG_WEP(priv
, "Set default WEP key: len=%d idx=%d ret=%d\n",
621 keyconf
->keylen
, keyconf
->keyidx
, ret
);
622 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
626 EXPORT_SYMBOL(iwl_set_default_wep_key
);
628 static int iwl_set_wep_dynamic_key_info(struct iwl_priv
*priv
,
629 struct ieee80211_key_conf
*keyconf
,
633 __le16 key_flags
= 0;
636 keyconf
->flags
&= ~IEEE80211_KEY_FLAG_GENERATE_IV
;
638 key_flags
|= (STA_KEY_FLG_WEP
| STA_KEY_FLG_MAP_KEY_MSK
);
639 key_flags
|= cpu_to_le16(keyconf
->keyidx
<< STA_KEY_FLG_KEYID_POS
);
640 key_flags
&= ~STA_KEY_FLG_INVALID
;
642 if (keyconf
->keylen
== WEP_KEY_LEN_128
)
643 key_flags
|= STA_KEY_FLG_KEY_SIZE_MSK
;
645 if (sta_id
== priv
->hw_params
.bcast_sta_id
)
646 key_flags
|= STA_KEY_MULTICAST_MSK
;
648 spin_lock_irqsave(&priv
->sta_lock
, flags
);
650 priv
->stations
[sta_id
].keyinfo
.alg
= keyconf
->alg
;
651 priv
->stations
[sta_id
].keyinfo
.keylen
= keyconf
->keylen
;
652 priv
->stations
[sta_id
].keyinfo
.keyidx
= keyconf
->keyidx
;
654 memcpy(priv
->stations
[sta_id
].keyinfo
.key
,
655 keyconf
->key
, keyconf
->keylen
);
657 memcpy(&priv
->stations
[sta_id
].sta
.key
.key
[3],
658 keyconf
->key
, keyconf
->keylen
);
660 if ((priv
->stations
[sta_id
].sta
.key
.key_flags
& STA_KEY_FLG_ENCRYPT_MSK
)
661 == STA_KEY_FLG_NO_ENC
)
662 priv
->stations
[sta_id
].sta
.key
.key_offset
=
663 iwl_get_free_ucode_key_index(priv
);
664 /* else, we are overriding an existing key => no need to allocated room
667 WARN(priv
->stations
[sta_id
].sta
.key
.key_offset
== WEP_INVALID_OFFSET
,
668 "no space for a new key");
670 priv
->stations
[sta_id
].sta
.key
.key_flags
= key_flags
;
671 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_KEY_MASK
;
672 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
674 ret
= iwl_send_add_sta(priv
, &priv
->stations
[sta_id
].sta
, CMD_ASYNC
);
676 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
681 static int iwl_set_ccmp_dynamic_key_info(struct iwl_priv
*priv
,
682 struct ieee80211_key_conf
*keyconf
,
686 __le16 key_flags
= 0;
689 key_flags
|= (STA_KEY_FLG_CCMP
| STA_KEY_FLG_MAP_KEY_MSK
);
690 key_flags
|= cpu_to_le16(keyconf
->keyidx
<< STA_KEY_FLG_KEYID_POS
);
691 key_flags
&= ~STA_KEY_FLG_INVALID
;
693 if (sta_id
== priv
->hw_params
.bcast_sta_id
)
694 key_flags
|= STA_KEY_MULTICAST_MSK
;
696 keyconf
->flags
|= IEEE80211_KEY_FLAG_GENERATE_IV
;
698 spin_lock_irqsave(&priv
->sta_lock
, flags
);
699 priv
->stations
[sta_id
].keyinfo
.alg
= keyconf
->alg
;
700 priv
->stations
[sta_id
].keyinfo
.keylen
= keyconf
->keylen
;
702 memcpy(priv
->stations
[sta_id
].keyinfo
.key
, keyconf
->key
,
705 memcpy(priv
->stations
[sta_id
].sta
.key
.key
, keyconf
->key
,
708 if ((priv
->stations
[sta_id
].sta
.key
.key_flags
& STA_KEY_FLG_ENCRYPT_MSK
)
709 == STA_KEY_FLG_NO_ENC
)
710 priv
->stations
[sta_id
].sta
.key
.key_offset
=
711 iwl_get_free_ucode_key_index(priv
);
712 /* else, we are overriding an existing key => no need to allocated room
715 WARN(priv
->stations
[sta_id
].sta
.key
.key_offset
== WEP_INVALID_OFFSET
,
716 "no space for a new key");
718 priv
->stations
[sta_id
].sta
.key
.key_flags
= key_flags
;
719 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_KEY_MASK
;
720 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
722 ret
= iwl_send_add_sta(priv
, &priv
->stations
[sta_id
].sta
, CMD_ASYNC
);
724 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
729 static int iwl_set_tkip_dynamic_key_info(struct iwl_priv
*priv
,
730 struct ieee80211_key_conf
*keyconf
,
735 __le16 key_flags
= 0;
737 key_flags
|= (STA_KEY_FLG_TKIP
| STA_KEY_FLG_MAP_KEY_MSK
);
738 key_flags
|= cpu_to_le16(keyconf
->keyidx
<< STA_KEY_FLG_KEYID_POS
);
739 key_flags
&= ~STA_KEY_FLG_INVALID
;
741 if (sta_id
== priv
->hw_params
.bcast_sta_id
)
742 key_flags
|= STA_KEY_MULTICAST_MSK
;
744 keyconf
->flags
|= IEEE80211_KEY_FLAG_GENERATE_IV
;
745 keyconf
->flags
|= IEEE80211_KEY_FLAG_GENERATE_MMIC
;
747 spin_lock_irqsave(&priv
->sta_lock
, flags
);
749 priv
->stations
[sta_id
].keyinfo
.alg
= keyconf
->alg
;
750 priv
->stations
[sta_id
].keyinfo
.keylen
= 16;
752 if ((priv
->stations
[sta_id
].sta
.key
.key_flags
& STA_KEY_FLG_ENCRYPT_MSK
)
753 == STA_KEY_FLG_NO_ENC
)
754 priv
->stations
[sta_id
].sta
.key
.key_offset
=
755 iwl_get_free_ucode_key_index(priv
);
756 /* else, we are overriding an existing key => no need to allocated room
759 WARN(priv
->stations
[sta_id
].sta
.key
.key_offset
== WEP_INVALID_OFFSET
,
760 "no space for a new key");
762 priv
->stations
[sta_id
].sta
.key
.key_flags
= key_flags
;
765 /* This copy is acutally not needed: we get the key with each TX */
766 memcpy(priv
->stations
[sta_id
].keyinfo
.key
, keyconf
->key
, 16);
768 memcpy(priv
->stations
[sta_id
].sta
.key
.key
, keyconf
->key
, 16);
770 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
775 void iwl_update_tkip_key(struct iwl_priv
*priv
,
776 struct ieee80211_key_conf
*keyconf
,
777 const u8
*addr
, u32 iv32
, u16
*phase1key
)
779 u8 sta_id
= IWL_INVALID_STATION
;
783 sta_id
= iwl_find_station(priv
, addr
);
784 if (sta_id
== IWL_INVALID_STATION
) {
785 IWL_DEBUG_MAC80211(priv
, "leave - %pM not in station map.\n",
790 if (iwl_scan_cancel(priv
)) {
791 /* cancel scan failed, just live w/ bad key and rely
792 briefly on SW decryption */
796 spin_lock_irqsave(&priv
->sta_lock
, flags
);
798 priv
->stations
[sta_id
].sta
.key
.tkip_rx_tsc_byte2
= (u8
) iv32
;
800 for (i
= 0; i
< 5; i
++)
801 priv
->stations
[sta_id
].sta
.key
.tkip_rx_ttak
[i
] =
802 cpu_to_le16(phase1key
[i
]);
804 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_KEY_MASK
;
805 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
807 iwl_send_add_sta(priv
, &priv
->stations
[sta_id
].sta
, CMD_ASYNC
);
809 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
812 EXPORT_SYMBOL(iwl_update_tkip_key
);
814 int iwl_remove_dynamic_key(struct iwl_priv
*priv
,
815 struct ieee80211_key_conf
*keyconf
,
823 priv
->key_mapping_key
--;
825 spin_lock_irqsave(&priv
->sta_lock
, flags
);
826 key_flags
= le16_to_cpu(priv
->stations
[sta_id
].sta
.key
.key_flags
);
827 keyidx
= (key_flags
>> STA_KEY_FLG_KEYID_POS
) & 0x3;
829 IWL_DEBUG_WEP(priv
, "Remove dynamic key: idx=%d sta=%d\n",
830 keyconf
->keyidx
, sta_id
);
832 if (keyconf
->keyidx
!= keyidx
) {
833 /* We need to remove a key with index different that the one
834 * in the uCode. This means that the key we need to remove has
835 * been replaced by another one with different index.
836 * Don't do anything and return ok
838 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
842 if (priv
->stations
[sta_id
].sta
.key
.key_offset
== WEP_INVALID_OFFSET
) {
843 IWL_WARN(priv
, "Removing wrong key %d 0x%x\n",
844 keyconf
->keyidx
, key_flags
);
845 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
849 if (!test_and_clear_bit(priv
->stations
[sta_id
].sta
.key
.key_offset
,
850 &priv
->ucode_key_table
))
851 IWL_ERR(priv
, "index %d not used in uCode key table.\n",
852 priv
->stations
[sta_id
].sta
.key
.key_offset
);
853 memset(&priv
->stations
[sta_id
].keyinfo
, 0,
854 sizeof(struct iwl_hw_key
));
855 memset(&priv
->stations
[sta_id
].sta
.key
, 0,
856 sizeof(struct iwl4965_keyinfo
));
857 priv
->stations
[sta_id
].sta
.key
.key_flags
=
858 STA_KEY_FLG_NO_ENC
| STA_KEY_FLG_INVALID
;
859 priv
->stations
[sta_id
].sta
.key
.key_offset
= WEP_INVALID_OFFSET
;
860 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_KEY_MASK
;
861 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
863 if (iwl_is_rfkill(priv
)) {
864 IWL_DEBUG_WEP(priv
, "Not sending REPLY_ADD_STA command because RFKILL enabled. \n");
865 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
868 ret
= iwl_send_add_sta(priv
, &priv
->stations
[sta_id
].sta
, CMD_ASYNC
);
869 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
872 EXPORT_SYMBOL(iwl_remove_dynamic_key
);
874 int iwl_set_dynamic_key(struct iwl_priv
*priv
,
875 struct ieee80211_key_conf
*keyconf
, u8 sta_id
)
879 priv
->key_mapping_key
++;
880 keyconf
->hw_key_idx
= HW_KEY_DYNAMIC
;
882 switch (keyconf
->alg
) {
884 ret
= iwl_set_ccmp_dynamic_key_info(priv
, keyconf
, sta_id
);
887 ret
= iwl_set_tkip_dynamic_key_info(priv
, keyconf
, sta_id
);
890 ret
= iwl_set_wep_dynamic_key_info(priv
, keyconf
, sta_id
);
894 "Unknown alg: %s alg = %d\n", __func__
, keyconf
->alg
);
898 IWL_DEBUG_WEP(priv
, "Set dynamic key: alg= %d len=%d idx=%d sta=%d ret=%d\n",
899 keyconf
->alg
, keyconf
->keylen
, keyconf
->keyidx
,
904 EXPORT_SYMBOL(iwl_set_dynamic_key
);
906 #ifdef CONFIG_IWLWIFI_DEBUG
907 static void iwl_dump_lq_cmd(struct iwl_priv
*priv
,
908 struct iwl_link_quality_cmd
*lq
)
911 IWL_DEBUG_RATE(priv
, "lq station id 0x%x\n", lq
->sta_id
);
912 IWL_DEBUG_RATE(priv
, "lq ant 0x%X 0x%X\n",
913 lq
->general_params
.single_stream_ant_msk
,
914 lq
->general_params
.dual_stream_ant_msk
);
916 for (i
= 0; i
< LINK_QUAL_MAX_RETRY_NUM
; i
++)
917 IWL_DEBUG_RATE(priv
, "lq index %d 0x%X\n",
918 i
, lq
->rs_table
[i
].rate_n_flags
);
921 static inline void iwl_dump_lq_cmd(struct iwl_priv
*priv
,
922 struct iwl_link_quality_cmd
*lq
)
927 int iwl_send_lq_cmd(struct iwl_priv
*priv
,
928 struct iwl_link_quality_cmd
*lq
, u8 flags
)
930 struct iwl_host_cmd cmd
= {
931 .id
= REPLY_TX_LINK_QUALITY_CMD
,
932 .len
= sizeof(struct iwl_link_quality_cmd
),
937 if ((lq
->sta_id
== 0xFF) &&
938 (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
))
941 if (lq
->sta_id
== 0xFF)
942 lq
->sta_id
= IWL_AP_ID
;
944 iwl_dump_lq_cmd(priv
, lq
);
946 if (iwl_is_associated(priv
) && priv
->assoc_station_added
)
947 return iwl_send_cmd(priv
, &cmd
);
951 EXPORT_SYMBOL(iwl_send_lq_cmd
);
954 * iwl_sta_init_lq - Initialize a station's hardware rate table
956 * The uCode's station table contains a table of fallback rates
957 * for automatic fallback during transmission.
959 * NOTE: This sets up a default set of values. These will be replaced later
960 * if the driver's iwl-agn-rs rate scaling algorithm is used, instead of
963 * NOTE: Run REPLY_ADD_STA command to set up station table entry, before
964 * calling this function (which runs REPLY_TX_LINK_QUALITY_CMD,
965 * which requires station table entry to exist).
967 static void iwl_sta_init_lq(struct iwl_priv
*priv
, const u8
*addr
, bool is_ap
)
970 struct iwl_link_quality_cmd link_cmd
= {
975 /* Set up the rate scaling to start at selected rate, fall back
976 * all the way down to 1M in IEEE order, and then spin on 1M */
978 r
= IWL_RATE_54M_INDEX
;
979 else if (priv
->band
== IEEE80211_BAND_5GHZ
)
980 r
= IWL_RATE_6M_INDEX
;
982 r
= IWL_RATE_1M_INDEX
;
984 for (i
= 0; i
< LINK_QUAL_MAX_RETRY_NUM
; i
++) {
986 if (r
>= IWL_FIRST_CCK_RATE
&& r
<= IWL_LAST_CCK_RATE
)
987 rate_flags
|= RATE_MCS_CCK_MSK
;
989 rate_flags
|= first_antenna(priv
->hw_params
.valid_tx_ant
) <<
992 link_cmd
.rs_table
[i
].rate_n_flags
=
993 iwl_hw_set_rate_n_flags(iwl_rates
[r
].plcp
, rate_flags
);
994 r
= iwl_get_prev_ieee_rate(r
);
997 link_cmd
.general_params
.single_stream_ant_msk
=
998 first_antenna(priv
->hw_params
.valid_tx_ant
);
999 link_cmd
.general_params
.dual_stream_ant_msk
= 3;
1000 link_cmd
.agg_params
.agg_dis_start_th
= LINK_QUAL_AGG_DISABLE_START_DEF
;
1001 link_cmd
.agg_params
.agg_time_limit
=
1002 cpu_to_le16(LINK_QUAL_AGG_TIME_LIMIT_DEF
);
1004 /* Update the rate scaling for control frame Tx to AP */
1005 link_cmd
.sta_id
= is_ap
? IWL_AP_ID
: priv
->hw_params
.bcast_sta_id
;
1007 iwl_send_cmd_pdu_async(priv
, REPLY_TX_LINK_QUALITY_CMD
,
1008 sizeof(link_cmd
), &link_cmd
, NULL
);
1012 * iwl_rxon_add_station - add station into station table.
1014 * there is only one AP station with id= IWL_AP_ID
1015 * NOTE: mutex must be held before calling this function
1017 int iwl_rxon_add_station(struct iwl_priv
*priv
, const u8
*addr
, bool is_ap
)
1019 struct ieee80211_sta
*sta
;
1020 struct ieee80211_sta_ht_cap ht_config
;
1021 struct ieee80211_sta_ht_cap
*cur_ht_config
= NULL
;
1024 /* Add station to device's station table */
1027 * XXX: This check is definitely not correct, if we're an AP
1028 * it'll always be false which is not what we want, but
1029 * it doesn't look like iwlagn is prepared to be an HT
1032 if (priv
->current_ht_config
.is_ht
) {
1034 sta
= ieee80211_find_sta(priv
->hw
, addr
);
1036 memcpy(&ht_config
, &sta
->ht_cap
, sizeof(ht_config
));
1037 cur_ht_config
= &ht_config
;
1042 sta_id
= iwl_add_station(priv
, addr
, is_ap
, CMD_SYNC
, cur_ht_config
);
1044 /* Set up default rate scaling table in device's station table */
1045 iwl_sta_init_lq(priv
, addr
, is_ap
);
1049 EXPORT_SYMBOL(iwl_rxon_add_station
);
1052 * iwl_get_sta_id - Find station's index within station table
1054 * If new IBSS station, create new entry in station table
1056 int iwl_get_sta_id(struct iwl_priv
*priv
, struct ieee80211_hdr
*hdr
)
1059 __le16 fc
= hdr
->frame_control
;
1061 /* If this frame is broadcast or management, use broadcast station id */
1062 if (!ieee80211_is_data(fc
) || is_multicast_ether_addr(hdr
->addr1
))
1063 return priv
->hw_params
.bcast_sta_id
;
1065 switch (priv
->iw_mode
) {
1067 /* If we are a client station in a BSS network, use the special
1068 * AP station entry (that's the only station we communicate with) */
1069 case NL80211_IFTYPE_STATION
:
1072 /* If we are an AP, then find the station, or use BCAST */
1073 case NL80211_IFTYPE_AP
:
1074 sta_id
= iwl_find_station(priv
, hdr
->addr1
);
1075 if (sta_id
!= IWL_INVALID_STATION
)
1077 return priv
->hw_params
.bcast_sta_id
;
1079 /* If this frame is going out to an IBSS network, find the station,
1080 * or create a new station table entry */
1081 case NL80211_IFTYPE_ADHOC
:
1082 sta_id
= iwl_find_station(priv
, hdr
->addr1
);
1083 if (sta_id
!= IWL_INVALID_STATION
)
1086 /* Create new station table entry */
1087 sta_id
= iwl_add_station(priv
, hdr
->addr1
, false,
1090 if (sta_id
!= IWL_INVALID_STATION
)
1093 IWL_DEBUG_DROP(priv
, "Station %pM not in station map. "
1094 "Defaulting to broadcast...\n",
1096 iwl_print_hex_dump(IWL_DL_DROP
, (u8
*) hdr
, sizeof(*hdr
));
1097 return priv
->hw_params
.bcast_sta_id
;
1100 IWL_WARN(priv
, "Unknown mode of operation: %d\n",
1102 return priv
->hw_params
.bcast_sta_id
;
1105 EXPORT_SYMBOL(iwl_get_sta_id
);
1108 * iwl_sta_tx_modify_enable_tid - Enable Tx for this TID in station table
1110 void iwl_sta_tx_modify_enable_tid(struct iwl_priv
*priv
, int sta_id
, int tid
)
1112 unsigned long flags
;
1114 /* Remove "disable" flag, to enable Tx for this TID */
1115 spin_lock_irqsave(&priv
->sta_lock
, flags
);
1116 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_TID_DISABLE_TX
;
1117 priv
->stations
[sta_id
].sta
.tid_disable_tx
&= cpu_to_le16(~(1 << tid
));
1118 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
1119 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
1121 iwl_send_add_sta(priv
, &priv
->stations
[sta_id
].sta
, CMD_ASYNC
);
1123 EXPORT_SYMBOL(iwl_sta_tx_modify_enable_tid
);
1125 int iwl_sta_rx_agg_start(struct iwl_priv
*priv
,
1126 const u8
*addr
, int tid
, u16 ssn
)
1128 unsigned long flags
;
1131 sta_id
= iwl_find_station(priv
, addr
);
1132 if (sta_id
== IWL_INVALID_STATION
)
1135 spin_lock_irqsave(&priv
->sta_lock
, flags
);
1136 priv
->stations
[sta_id
].sta
.station_flags_msk
= 0;
1137 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_ADDBA_TID_MSK
;
1138 priv
->stations
[sta_id
].sta
.add_immediate_ba_tid
= (u8
)tid
;
1139 priv
->stations
[sta_id
].sta
.add_immediate_ba_ssn
= cpu_to_le16(ssn
);
1140 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
1141 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
1143 return iwl_send_add_sta(priv
, &priv
->stations
[sta_id
].sta
,
1146 EXPORT_SYMBOL(iwl_sta_rx_agg_start
);
1148 int iwl_sta_rx_agg_stop(struct iwl_priv
*priv
, const u8
*addr
, int tid
)
1150 unsigned long flags
;
1153 sta_id
= iwl_find_station(priv
, addr
);
1154 if (sta_id
== IWL_INVALID_STATION
) {
1155 IWL_ERR(priv
, "Invalid station for AGG tid %d\n", tid
);
1159 spin_lock_irqsave(&priv
->sta_lock
, flags
);
1160 priv
->stations
[sta_id
].sta
.station_flags_msk
= 0;
1161 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_DELBA_TID_MSK
;
1162 priv
->stations
[sta_id
].sta
.remove_immediate_ba_tid
= (u8
)tid
;
1163 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
1164 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
1166 return iwl_send_add_sta(priv
, &priv
->stations
[sta_id
].sta
,
1169 EXPORT_SYMBOL(iwl_sta_rx_agg_stop
);
1171 static void iwl_sta_modify_ps_wake(struct iwl_priv
*priv
, int sta_id
)
1173 unsigned long flags
;
1175 spin_lock_irqsave(&priv
->sta_lock
, flags
);
1176 priv
->stations
[sta_id
].sta
.station_flags
&= ~STA_FLG_PWR_SAVE_MSK
;
1177 priv
->stations
[sta_id
].sta
.station_flags_msk
= STA_FLG_PWR_SAVE_MSK
;
1178 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= 0;
1179 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
1180 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
1182 iwl_send_add_sta(priv
, &priv
->stations
[sta_id
].sta
, CMD_ASYNC
);
1185 void iwl_update_ps_mode(struct iwl_priv
*priv
, u16 ps_bit
, u8
*addr
)
1187 /* FIXME: need locking over ps_status ??? */
1188 u8 sta_id
= iwl_find_station(priv
, addr
);
1190 if (sta_id
!= IWL_INVALID_STATION
) {
1191 u8 sta_awake
= priv
->stations
[sta_id
].
1192 ps_status
== STA_PS_STATUS_WAKE
;
1194 if (sta_awake
&& ps_bit
)
1195 priv
->stations
[sta_id
].ps_status
= STA_PS_STATUS_SLEEP
;
1196 else if (!sta_awake
&& !ps_bit
) {
1197 iwl_sta_modify_ps_wake(priv
, sta_id
);
1198 priv
->stations
[sta_id
].ps_status
= STA_PS_STATUS_WAKE
;