1 /******************************************************************************
3 * Copyright(c) 2003 - 2008 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 * James P. Ketrenos <ipw2100-admin@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>
36 #include "iwl-helpers.h"
39 #define IWL_STA_DRIVER_ACTIVE BIT(0) /* driver entry is active */
40 #define IWL_STA_UCODE_ACTIVE BIT(1) /* ucode entry is active */
42 u8
iwl_find_station(struct iwl_priv
*priv
, const u8
*addr
)
46 int ret
= IWL_INVALID_STATION
;
49 if ((priv
->iw_mode
== NL80211_IFTYPE_ADHOC
) ||
50 (priv
->iw_mode
== NL80211_IFTYPE_AP
))
53 if (is_broadcast_ether_addr(addr
))
54 return priv
->hw_params
.bcast_sta_id
;
56 spin_lock_irqsave(&priv
->sta_lock
, flags
);
57 for (i
= start
; i
< priv
->hw_params
.max_stations
; i
++)
58 if (priv
->stations
[i
].used
&&
59 (!compare_ether_addr(priv
->stations
[i
].sta
.sta
.addr
,
65 IWL_DEBUG_ASSOC_LIMIT("can not find STA %pM total %d\n",
66 addr
, priv
->num_stations
);
69 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
72 EXPORT_SYMBOL(iwl_find_station
);
74 int iwl_get_ra_sta_id(struct iwl_priv
*priv
, struct ieee80211_hdr
*hdr
)
76 if (priv
->iw_mode
== NL80211_IFTYPE_STATION
) {
79 u8
*da
= ieee80211_get_DA(hdr
);
80 return iwl_find_station(priv
, da
);
83 EXPORT_SYMBOL(iwl_get_ra_sta_id
);
85 static void iwl_sta_ucode_activate(struct iwl_priv
*priv
, u8 sta_id
)
89 spin_lock_irqsave(&priv
->sta_lock
, flags
);
91 if (!(priv
->stations
[sta_id
].used
& IWL_STA_DRIVER_ACTIVE
))
92 IWL_ERROR("ACTIVATE a non DRIVER active station %d\n", sta_id
);
94 priv
->stations
[sta_id
].used
|= IWL_STA_UCODE_ACTIVE
;
95 IWL_DEBUG_ASSOC("Added STA to Ucode: %pM\n",
96 priv
->stations
[sta_id
].sta
.sta
.addr
);
98 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
101 static int iwl_add_sta_callback(struct iwl_priv
*priv
,
102 struct iwl_cmd
*cmd
, struct sk_buff
*skb
)
104 struct iwl_rx_packet
*res
= NULL
;
105 u8 sta_id
= cmd
->cmd
.addsta
.sta
.sta_id
;
108 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
112 res
= (struct iwl_rx_packet
*)skb
->data
;
113 if (res
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
114 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
119 switch (res
->u
.add_sta
.status
) {
120 case ADD_STA_SUCCESS_MSK
:
121 iwl_sta_ucode_activate(priv
, sta_id
);
124 IWL_DEBUG_HC("Received REPLY_ADD_STA:(0x%08X)\n",
125 res
->u
.add_sta
.status
);
129 /* We didn't cache the SKB; let the caller free it */
133 int iwl_send_add_sta(struct iwl_priv
*priv
,
134 struct iwl_addsta_cmd
*sta
, u8 flags
)
136 struct iwl_rx_packet
*res
= NULL
;
138 u8 data
[sizeof(*sta
)];
139 struct iwl_host_cmd cmd
= {
145 if (flags
& CMD_ASYNC
)
146 cmd
.meta
.u
.callback
= iwl_add_sta_callback
;
148 cmd
.meta
.flags
|= CMD_WANT_SKB
;
150 cmd
.len
= priv
->cfg
->ops
->utils
->build_addsta_hcmd(sta
, data
);
151 ret
= iwl_send_cmd(priv
, &cmd
);
153 if (ret
|| (flags
& CMD_ASYNC
))
156 res
= (struct iwl_rx_packet
*)cmd
.meta
.u
.skb
->data
;
157 if (res
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
158 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
164 switch (res
->u
.add_sta
.status
) {
165 case ADD_STA_SUCCESS_MSK
:
166 iwl_sta_ucode_activate(priv
, sta
->sta
.sta_id
);
167 IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
171 IWL_WARNING("REPLY_ADD_STA failed\n");
176 priv
->alloc_rxb_skb
--;
177 dev_kfree_skb_any(cmd
.meta
.u
.skb
);
181 EXPORT_SYMBOL(iwl_send_add_sta
);
183 static void iwl_set_ht_add_station(struct iwl_priv
*priv
, u8 index
,
184 struct ieee80211_ht_info
*sta_ht_inf
)
189 if (!sta_ht_inf
|| !sta_ht_inf
->ht_supported
)
192 mimo_ps_mode
= (sta_ht_inf
->cap
& IEEE80211_HT_CAP_SM_PS
) >> 2;
194 sta_flags
= priv
->stations
[index
].sta
.station_flags
;
196 sta_flags
&= ~(STA_FLG_RTS_MIMO_PROT_MSK
| STA_FLG_MIMO_DIS_MSK
);
198 switch (mimo_ps_mode
) {
199 case WLAN_HT_CAP_SM_PS_STATIC
:
200 sta_flags
|= STA_FLG_MIMO_DIS_MSK
;
202 case WLAN_HT_CAP_SM_PS_DYNAMIC
:
203 sta_flags
|= STA_FLG_RTS_MIMO_PROT_MSK
;
205 case WLAN_HT_CAP_SM_PS_DISABLED
:
208 IWL_WARNING("Invalid MIMO PS mode %d\n", mimo_ps_mode
);
212 sta_flags
|= cpu_to_le32(
213 (u32
)sta_ht_inf
->ampdu_factor
<< STA_FLG_MAX_AGG_SIZE_POS
);
215 sta_flags
|= cpu_to_le32(
216 (u32
)sta_ht_inf
->ampdu_density
<< STA_FLG_AGG_MPDU_DENSITY_POS
);
218 if (iwl_is_fat_tx_allowed(priv
, sta_ht_inf
))
219 sta_flags
|= STA_FLG_FAT_EN_MSK
;
221 sta_flags
&= ~STA_FLG_FAT_EN_MSK
;
223 priv
->stations
[index
].sta
.station_flags
= sta_flags
;
229 * iwl_add_station_flags - Add station to tables in driver and device
231 u8
iwl_add_station_flags(struct iwl_priv
*priv
, const u8
*addr
, int is_ap
,
232 u8 flags
, struct ieee80211_ht_info
*ht_info
)
235 int sta_id
= IWL_INVALID_STATION
;
236 struct iwl_station_entry
*station
;
237 unsigned long flags_spin
;
239 spin_lock_irqsave(&priv
->sta_lock
, flags_spin
);
242 else if (is_broadcast_ether_addr(addr
))
243 sta_id
= priv
->hw_params
.bcast_sta_id
;
245 for (i
= IWL_STA_ID
; i
< priv
->hw_params
.max_stations
; i
++) {
246 if (!compare_ether_addr(priv
->stations
[i
].sta
.sta
.addr
,
252 if (!priv
->stations
[i
].used
&&
253 sta_id
== IWL_INVALID_STATION
)
257 /* These two conditions have the same outcome, but keep them separate
258 since they have different meanings */
259 if (unlikely(sta_id
== IWL_INVALID_STATION
)) {
260 spin_unlock_irqrestore(&priv
->sta_lock
, flags_spin
);
264 if (priv
->stations
[sta_id
].used
&&
265 !compare_ether_addr(priv
->stations
[sta_id
].sta
.sta
.addr
, addr
)) {
266 spin_unlock_irqrestore(&priv
->sta_lock
, flags_spin
);
271 station
= &priv
->stations
[sta_id
];
272 station
->used
= IWL_STA_DRIVER_ACTIVE
;
273 IWL_DEBUG_ASSOC("Add STA to driver ID %d: %pM\n",
275 priv
->num_stations
++;
277 /* Set up the REPLY_ADD_STA command to send to device */
278 memset(&station
->sta
, 0, sizeof(struct iwl_addsta_cmd
));
279 memcpy(station
->sta
.sta
.addr
, addr
, ETH_ALEN
);
280 station
->sta
.mode
= 0;
281 station
->sta
.sta
.sta_id
= sta_id
;
282 station
->sta
.station_flags
= 0;
284 /* BCAST station and IBSS stations do not work in HT mode */
285 if (sta_id
!= priv
->hw_params
.bcast_sta_id
&&
286 priv
->iw_mode
!= NL80211_IFTYPE_ADHOC
)
287 iwl_set_ht_add_station(priv
, sta_id
, ht_info
);
289 spin_unlock_irqrestore(&priv
->sta_lock
, flags_spin
);
291 /* Add station to device's station table */
292 iwl_send_add_sta(priv
, &station
->sta
, flags
);
296 EXPORT_SYMBOL(iwl_add_station_flags
);
298 static void iwl_sta_ucode_deactivate(struct iwl_priv
*priv
, const char *addr
)
301 u8 sta_id
= iwl_find_station(priv
, addr
);
303 BUG_ON(sta_id
== IWL_INVALID_STATION
);
305 IWL_DEBUG_ASSOC("Removed STA from Ucode: %pM\n", addr
);
307 spin_lock_irqsave(&priv
->sta_lock
, flags
);
309 /* Ucode must be active and driver must be non active */
310 if (priv
->stations
[sta_id
].used
!= IWL_STA_UCODE_ACTIVE
)
311 IWL_ERROR("removed non active STA %d\n", sta_id
);
313 priv
->stations
[sta_id
].used
&= ~IWL_STA_UCODE_ACTIVE
;
315 memset(&priv
->stations
[sta_id
], 0, sizeof(struct iwl_station_entry
));
316 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
319 static int iwl_remove_sta_callback(struct iwl_priv
*priv
,
320 struct iwl_cmd
*cmd
, struct sk_buff
*skb
)
322 struct iwl_rx_packet
*res
= NULL
;
323 const char *addr
= cmd
->cmd
.rm_sta
.addr
;
326 IWL_ERROR("Error: Response NULL in REPLY_REMOVE_STA.\n");
330 res
= (struct iwl_rx_packet
*)skb
->data
;
331 if (res
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
332 IWL_ERROR("Bad return from REPLY_REMOVE_STA (0x%08X)\n",
337 switch (res
->u
.rem_sta
.status
) {
338 case REM_STA_SUCCESS_MSK
:
339 iwl_sta_ucode_deactivate(priv
, addr
);
342 IWL_ERROR("REPLY_REMOVE_STA failed\n");
346 /* We didn't cache the SKB; let the caller free it */
350 static int iwl_send_remove_station(struct iwl_priv
*priv
, const u8
*addr
,
353 struct iwl_rx_packet
*res
= NULL
;
356 struct iwl_rem_sta_cmd rm_sta_cmd
;
358 struct iwl_host_cmd cmd
= {
359 .id
= REPLY_REMOVE_STA
,
360 .len
= sizeof(struct iwl_rem_sta_cmd
),
365 memset(&rm_sta_cmd
, 0, sizeof(rm_sta_cmd
));
366 rm_sta_cmd
.num_sta
= 1;
367 memcpy(&rm_sta_cmd
.addr
, addr
, ETH_ALEN
);
369 if (flags
& CMD_ASYNC
)
370 cmd
.meta
.u
.callback
= iwl_remove_sta_callback
;
372 cmd
.meta
.flags
|= CMD_WANT_SKB
;
373 ret
= iwl_send_cmd(priv
, &cmd
);
375 if (ret
|| (flags
& CMD_ASYNC
))
378 res
= (struct iwl_rx_packet
*)cmd
.meta
.u
.skb
->data
;
379 if (res
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
380 IWL_ERROR("Bad return from REPLY_REMOVE_STA (0x%08X)\n",
386 switch (res
->u
.rem_sta
.status
) {
387 case REM_STA_SUCCESS_MSK
:
388 iwl_sta_ucode_deactivate(priv
, addr
);
389 IWL_DEBUG_ASSOC("REPLY_REMOVE_STA PASSED\n");
393 IWL_ERROR("REPLY_REMOVE_STA failed\n");
398 priv
->alloc_rxb_skb
--;
399 dev_kfree_skb_any(cmd
.meta
.u
.skb
);
405 * iwl_remove_station - Remove driver's knowledge of station.
407 int iwl_remove_station(struct iwl_priv
*priv
, const u8
*addr
, int is_ap
)
409 int sta_id
= IWL_INVALID_STATION
;
410 int i
, ret
= -EINVAL
;
413 spin_lock_irqsave(&priv
->sta_lock
, flags
);
417 else if (is_broadcast_ether_addr(addr
))
418 sta_id
= priv
->hw_params
.bcast_sta_id
;
420 for (i
= IWL_STA_ID
; i
< priv
->hw_params
.max_stations
; i
++)
421 if (priv
->stations
[i
].used
&&
422 !compare_ether_addr(priv
->stations
[i
].sta
.sta
.addr
,
428 if (unlikely(sta_id
== IWL_INVALID_STATION
))
431 IWL_DEBUG_ASSOC("Removing STA from driver:%d %pM\n",
434 if (!(priv
->stations
[sta_id
].used
& IWL_STA_DRIVER_ACTIVE
)) {
435 IWL_ERROR("Removing %pM but non DRIVER active\n",
440 if (!(priv
->stations
[sta_id
].used
& IWL_STA_UCODE_ACTIVE
)) {
441 IWL_ERROR("Removing %pM but non UCODE active\n",
447 priv
->stations
[sta_id
].used
&= ~IWL_STA_DRIVER_ACTIVE
;
449 priv
->num_stations
--;
451 BUG_ON(priv
->num_stations
< 0);
453 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
455 ret
= iwl_send_remove_station(priv
, addr
, CMD_ASYNC
);
458 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
461 EXPORT_SYMBOL(iwl_remove_station
);
463 static int iwl_get_free_ucode_key_index(struct iwl_priv
*priv
)
467 for (i
= 0; i
< STA_KEY_MAX_NUM
; i
++)
468 if (!test_and_set_bit(i
, &priv
->ucode_key_table
))
474 int iwl_send_static_wepkey_cmd(struct iwl_priv
*priv
, u8 send_if_empty
)
476 int i
, not_empty
= 0;
477 u8 buff
[sizeof(struct iwl_wep_cmd
) +
478 sizeof(struct iwl_wep_key
) * WEP_KEYS_MAX
];
479 struct iwl_wep_cmd
*wep_cmd
= (struct iwl_wep_cmd
*)buff
;
480 size_t cmd_size
= sizeof(struct iwl_wep_cmd
);
481 struct iwl_host_cmd cmd
= {
484 .meta
.flags
= CMD_ASYNC
,
487 memset(wep_cmd
, 0, cmd_size
+
488 (sizeof(struct iwl_wep_key
) * WEP_KEYS_MAX
));
490 for (i
= 0; i
< WEP_KEYS_MAX
; i
++) {
491 wep_cmd
->key
[i
].key_index
= i
;
492 if (priv
->wep_keys
[i
].key_size
) {
493 wep_cmd
->key
[i
].key_offset
= i
;
496 wep_cmd
->key
[i
].key_offset
= WEP_INVALID_OFFSET
;
499 wep_cmd
->key
[i
].key_size
= priv
->wep_keys
[i
].key_size
;
500 memcpy(&wep_cmd
->key
[i
].key
[3], priv
->wep_keys
[i
].key
,
501 priv
->wep_keys
[i
].key_size
);
504 wep_cmd
->global_key_type
= WEP_KEY_WEP_TYPE
;
505 wep_cmd
->num_keys
= WEP_KEYS_MAX
;
507 cmd_size
+= sizeof(struct iwl_wep_key
) * WEP_KEYS_MAX
;
511 if (not_empty
|| send_if_empty
)
512 return iwl_send_cmd(priv
, &cmd
);
516 EXPORT_SYMBOL(iwl_send_static_wepkey_cmd
);
518 int iwl_remove_default_wep_key(struct iwl_priv
*priv
,
519 struct ieee80211_key_conf
*keyconf
)
524 spin_lock_irqsave(&priv
->sta_lock
, flags
);
526 if (!test_and_clear_bit(keyconf
->keyidx
, &priv
->ucode_key_table
))
527 IWL_ERROR("index %d not used in uCode key table.\n",
530 priv
->default_wep_key
--;
531 memset(&priv
->wep_keys
[keyconf
->keyidx
], 0, sizeof(priv
->wep_keys
[0]));
532 ret
= iwl_send_static_wepkey_cmd(priv
, 1);
533 IWL_DEBUG_WEP("Remove default WEP key: idx=%d ret=%d\n",
534 keyconf
->keyidx
, ret
);
535 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
539 EXPORT_SYMBOL(iwl_remove_default_wep_key
);
541 int iwl_set_default_wep_key(struct iwl_priv
*priv
,
542 struct ieee80211_key_conf
*keyconf
)
547 if (keyconf
->keylen
!= WEP_KEY_LEN_128
&&
548 keyconf
->keylen
!= WEP_KEY_LEN_64
) {
549 IWL_DEBUG_WEP("Bad WEP key length %d\n", keyconf
->keylen
);
553 keyconf
->flags
&= ~IEEE80211_KEY_FLAG_GENERATE_IV
;
554 keyconf
->hw_key_idx
= HW_KEY_DEFAULT
;
555 priv
->stations
[IWL_AP_ID
].keyinfo
.alg
= ALG_WEP
;
557 spin_lock_irqsave(&priv
->sta_lock
, flags
);
558 priv
->default_wep_key
++;
560 if (test_and_set_bit(keyconf
->keyidx
, &priv
->ucode_key_table
))
561 IWL_ERROR("index %d already used in uCode key table.\n",
564 priv
->wep_keys
[keyconf
->keyidx
].key_size
= keyconf
->keylen
;
565 memcpy(&priv
->wep_keys
[keyconf
->keyidx
].key
, &keyconf
->key
,
568 ret
= iwl_send_static_wepkey_cmd(priv
, 0);
569 IWL_DEBUG_WEP("Set default WEP key: len=%d idx=%d ret=%d\n",
570 keyconf
->keylen
, keyconf
->keyidx
, ret
);
571 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
575 EXPORT_SYMBOL(iwl_set_default_wep_key
);
577 static int iwl_set_wep_dynamic_key_info(struct iwl_priv
*priv
,
578 struct ieee80211_key_conf
*keyconf
,
582 __le16 key_flags
= 0;
585 keyconf
->flags
&= ~IEEE80211_KEY_FLAG_GENERATE_IV
;
587 key_flags
|= (STA_KEY_FLG_WEP
| STA_KEY_FLG_MAP_KEY_MSK
);
588 key_flags
|= cpu_to_le16(keyconf
->keyidx
<< STA_KEY_FLG_KEYID_POS
);
589 key_flags
&= ~STA_KEY_FLG_INVALID
;
591 if (keyconf
->keylen
== WEP_KEY_LEN_128
)
592 key_flags
|= STA_KEY_FLG_KEY_SIZE_MSK
;
594 if (sta_id
== priv
->hw_params
.bcast_sta_id
)
595 key_flags
|= STA_KEY_MULTICAST_MSK
;
597 spin_lock_irqsave(&priv
->sta_lock
, flags
);
599 priv
->stations
[sta_id
].keyinfo
.alg
= keyconf
->alg
;
600 priv
->stations
[sta_id
].keyinfo
.keylen
= keyconf
->keylen
;
601 priv
->stations
[sta_id
].keyinfo
.keyidx
= keyconf
->keyidx
;
603 memcpy(priv
->stations
[sta_id
].keyinfo
.key
,
604 keyconf
->key
, keyconf
->keylen
);
606 memcpy(&priv
->stations
[sta_id
].sta
.key
.key
[3],
607 keyconf
->key
, keyconf
->keylen
);
609 if ((priv
->stations
[sta_id
].sta
.key
.key_flags
& STA_KEY_FLG_ENCRYPT_MSK
)
610 == STA_KEY_FLG_NO_ENC
)
611 priv
->stations
[sta_id
].sta
.key
.key_offset
=
612 iwl_get_free_ucode_key_index(priv
);
613 /* else, we are overriding an existing key => no need to allocated room
616 priv
->stations
[sta_id
].sta
.key
.key_flags
= key_flags
;
617 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_KEY_MASK
;
618 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
620 ret
= iwl_send_add_sta(priv
, &priv
->stations
[sta_id
].sta
, CMD_ASYNC
);
622 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
627 static int iwl_set_ccmp_dynamic_key_info(struct iwl_priv
*priv
,
628 struct ieee80211_key_conf
*keyconf
,
632 __le16 key_flags
= 0;
634 key_flags
|= (STA_KEY_FLG_CCMP
| STA_KEY_FLG_MAP_KEY_MSK
);
635 key_flags
|= cpu_to_le16(keyconf
->keyidx
<< STA_KEY_FLG_KEYID_POS
);
636 key_flags
&= ~STA_KEY_FLG_INVALID
;
638 if (sta_id
== priv
->hw_params
.bcast_sta_id
)
639 key_flags
|= STA_KEY_MULTICAST_MSK
;
641 keyconf
->flags
|= IEEE80211_KEY_FLAG_GENERATE_IV
;
643 spin_lock_irqsave(&priv
->sta_lock
, flags
);
644 priv
->stations
[sta_id
].keyinfo
.alg
= keyconf
->alg
;
645 priv
->stations
[sta_id
].keyinfo
.keylen
= keyconf
->keylen
;
647 memcpy(priv
->stations
[sta_id
].keyinfo
.key
, keyconf
->key
,
650 memcpy(priv
->stations
[sta_id
].sta
.key
.key
, keyconf
->key
,
653 if ((priv
->stations
[sta_id
].sta
.key
.key_flags
& STA_KEY_FLG_ENCRYPT_MSK
)
654 == STA_KEY_FLG_NO_ENC
)
655 priv
->stations
[sta_id
].sta
.key
.key_offset
=
656 iwl_get_free_ucode_key_index(priv
);
657 /* else, we are overriding an existing key => no need to allocated room
660 priv
->stations
[sta_id
].sta
.key
.key_flags
= key_flags
;
661 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_KEY_MASK
;
662 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
664 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
666 IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
667 return iwl_send_add_sta(priv
, &priv
->stations
[sta_id
].sta
, CMD_ASYNC
);
670 static int iwl_set_tkip_dynamic_key_info(struct iwl_priv
*priv
,
671 struct ieee80211_key_conf
*keyconf
,
677 keyconf
->flags
|= IEEE80211_KEY_FLAG_GENERATE_IV
;
678 keyconf
->flags
|= IEEE80211_KEY_FLAG_GENERATE_MMIC
;
680 spin_lock_irqsave(&priv
->sta_lock
, flags
);
682 priv
->stations
[sta_id
].keyinfo
.alg
= keyconf
->alg
;
683 priv
->stations
[sta_id
].keyinfo
.keylen
= 16;
685 if ((priv
->stations
[sta_id
].sta
.key
.key_flags
& STA_KEY_FLG_ENCRYPT_MSK
)
686 == STA_KEY_FLG_NO_ENC
)
687 priv
->stations
[sta_id
].sta
.key
.key_offset
=
688 iwl_get_free_ucode_key_index(priv
);
689 /* else, we are overriding an existing key => no need to allocated room
692 /* This copy is acutally not needed: we get the key with each TX */
693 memcpy(priv
->stations
[sta_id
].keyinfo
.key
, keyconf
->key
, 16);
695 memcpy(priv
->stations
[sta_id
].sta
.key
.key
, keyconf
->key
, 16);
697 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
702 int iwl_remove_dynamic_key(struct iwl_priv
*priv
,
703 struct ieee80211_key_conf
*keyconf
,
711 priv
->key_mapping_key
--;
713 spin_lock_irqsave(&priv
->sta_lock
, flags
);
714 key_flags
= le16_to_cpu(priv
->stations
[sta_id
].sta
.key
.key_flags
);
715 keyidx
= (key_flags
>> STA_KEY_FLG_KEYID_POS
) & 0x3;
717 IWL_DEBUG_WEP("Remove dynamic key: idx=%d sta=%d\n",
718 keyconf
->keyidx
, sta_id
);
720 if (keyconf
->keyidx
!= keyidx
) {
721 /* We need to remove a key with index different that the one
722 * in the uCode. This means that the key we need to remove has
723 * been replaced by another one with different index.
724 * Don't do anything and return ok
726 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
730 if (!test_and_clear_bit(priv
->stations
[sta_id
].sta
.key
.key_offset
,
731 &priv
->ucode_key_table
))
732 IWL_ERROR("index %d not used in uCode key table.\n",
733 priv
->stations
[sta_id
].sta
.key
.key_offset
);
734 memset(&priv
->stations
[sta_id
].keyinfo
, 0,
735 sizeof(struct iwl_hw_key
));
736 memset(&priv
->stations
[sta_id
].sta
.key
, 0,
737 sizeof(struct iwl4965_keyinfo
));
738 priv
->stations
[sta_id
].sta
.key
.key_flags
=
739 STA_KEY_FLG_NO_ENC
| STA_KEY_FLG_INVALID
;
740 priv
->stations
[sta_id
].sta
.key
.key_offset
= WEP_INVALID_OFFSET
;
741 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_KEY_MASK
;
742 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
744 ret
= iwl_send_add_sta(priv
, &priv
->stations
[sta_id
].sta
, CMD_ASYNC
);
745 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
748 EXPORT_SYMBOL(iwl_remove_dynamic_key
);
750 int iwl_set_dynamic_key(struct iwl_priv
*priv
,
751 struct ieee80211_key_conf
*keyconf
, u8 sta_id
)
755 priv
->key_mapping_key
++;
756 keyconf
->hw_key_idx
= HW_KEY_DYNAMIC
;
758 switch (keyconf
->alg
) {
760 ret
= iwl_set_ccmp_dynamic_key_info(priv
, keyconf
, sta_id
);
763 ret
= iwl_set_tkip_dynamic_key_info(priv
, keyconf
, sta_id
);
766 ret
= iwl_set_wep_dynamic_key_info(priv
, keyconf
, sta_id
);
769 IWL_ERROR("Unknown alg: %s alg = %d\n", __func__
, keyconf
->alg
);
773 IWL_DEBUG_WEP("Set dynamic key: alg= %d len=%d idx=%d sta=%d ret=%d\n",
774 keyconf
->alg
, keyconf
->keylen
, keyconf
->keyidx
,
779 EXPORT_SYMBOL(iwl_set_dynamic_key
);
781 #ifdef CONFIG_IWLWIFI_DEBUG
782 static void iwl_dump_lq_cmd(struct iwl_priv
*priv
,
783 struct iwl_link_quality_cmd
*lq
)
786 IWL_DEBUG_RATE("lq station id 0x%x\n", lq
->sta_id
);
787 IWL_DEBUG_RATE("lq dta 0x%X 0x%X\n",
788 lq
->general_params
.single_stream_ant_msk
,
789 lq
->general_params
.dual_stream_ant_msk
);
791 for (i
= 0; i
< LINK_QUAL_MAX_RETRY_NUM
; i
++)
792 IWL_DEBUG_RATE("lq index %d 0x%X\n",
793 i
, lq
->rs_table
[i
].rate_n_flags
);
796 static inline void iwl_dump_lq_cmd(struct iwl_priv
*priv
,
797 struct iwl_link_quality_cmd
*lq
)
802 int iwl_send_lq_cmd(struct iwl_priv
*priv
,
803 struct iwl_link_quality_cmd
*lq
, u8 flags
)
805 struct iwl_host_cmd cmd
= {
806 .id
= REPLY_TX_LINK_QUALITY_CMD
,
807 .len
= sizeof(struct iwl_link_quality_cmd
),
812 if ((lq
->sta_id
== 0xFF) &&
813 (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
))
816 if (lq
->sta_id
== 0xFF)
817 lq
->sta_id
= IWL_AP_ID
;
819 iwl_dump_lq_cmd(priv
, lq
);
821 if (iwl_is_associated(priv
) && priv
->assoc_station_added
)
822 return iwl_send_cmd(priv
, &cmd
);
826 EXPORT_SYMBOL(iwl_send_lq_cmd
);
829 * iwl_sta_init_lq - Initialize a station's hardware rate table
831 * The uCode's station table contains a table of fallback rates
832 * for automatic fallback during transmission.
834 * NOTE: This sets up a default set of values. These will be replaced later
835 * if the driver's iwl-agn-rs rate scaling algorithm is used, instead of
838 * NOTE: Run REPLY_ADD_STA command to set up station table entry, before
839 * calling this function (which runs REPLY_TX_LINK_QUALITY_CMD,
840 * which requires station table entry to exist).
842 static void iwl_sta_init_lq(struct iwl_priv
*priv
, const u8
*addr
, int is_ap
)
845 struct iwl_link_quality_cmd link_cmd
= {
850 /* Set up the rate scaling to start at selected rate, fall back
851 * all the way down to 1M in IEEE order, and then spin on 1M */
853 r
= IWL_RATE_54M_INDEX
;
854 else if (priv
->band
== IEEE80211_BAND_5GHZ
)
855 r
= IWL_RATE_6M_INDEX
;
857 r
= IWL_RATE_1M_INDEX
;
859 for (i
= 0; i
< LINK_QUAL_MAX_RETRY_NUM
; i
++) {
861 if (r
>= IWL_FIRST_CCK_RATE
&& r
<= IWL_LAST_CCK_RATE
)
862 rate_flags
|= RATE_MCS_CCK_MSK
;
864 /* Use Tx antenna B only */
865 rate_flags
|= RATE_MCS_ANT_B_MSK
; /*FIXME:RS*/
867 link_cmd
.rs_table
[i
].rate_n_flags
=
868 iwl_hw_set_rate_n_flags(iwl_rates
[r
].plcp
, rate_flags
);
869 r
= iwl4965_get_prev_ieee_rate(r
);
872 link_cmd
.general_params
.single_stream_ant_msk
= 2;
873 link_cmd
.general_params
.dual_stream_ant_msk
= 3;
874 link_cmd
.agg_params
.agg_dis_start_th
= 3;
875 link_cmd
.agg_params
.agg_time_limit
= cpu_to_le16(4000);
877 /* Update the rate scaling for control frame Tx to AP */
878 link_cmd
.sta_id
= is_ap
? IWL_AP_ID
: priv
->hw_params
.bcast_sta_id
;
880 iwl_send_cmd_pdu_async(priv
, REPLY_TX_LINK_QUALITY_CMD
,
881 sizeof(link_cmd
), &link_cmd
, NULL
);
885 * iwl_rxon_add_station - add station into station table.
887 * there is only one AP station with id= IWL_AP_ID
888 * NOTE: mutex must be held before calling this fnction
890 int iwl_rxon_add_station(struct iwl_priv
*priv
, const u8
*addr
, int is_ap
)
894 /* Add station to device's station table */
895 struct ieee80211_conf
*conf
= &priv
->hw
->conf
;
896 struct ieee80211_ht_info
*cur_ht_config
= &conf
->ht_conf
;
899 (conf
->flags
& IEEE80211_CONF_SUPPORT_HT_MODE
) &&
900 (priv
->iw_mode
== NL80211_IFTYPE_STATION
))
901 sta_id
= iwl_add_station_flags(priv
, addr
, is_ap
,
904 sta_id
= iwl_add_station_flags(priv
, addr
, is_ap
,
907 /* Set up default rate scaling table in device's station table */
908 iwl_sta_init_lq(priv
, addr
, is_ap
);
912 EXPORT_SYMBOL(iwl_rxon_add_station
);
915 * iwl_get_sta_id - Find station's index within station table
917 * If new IBSS station, create new entry in station table
919 int iwl_get_sta_id(struct iwl_priv
*priv
, struct ieee80211_hdr
*hdr
)
922 u16 fc
= le16_to_cpu(hdr
->frame_control
);
924 /* If this frame is broadcast or management, use broadcast station id */
925 if (((fc
& IEEE80211_FCTL_FTYPE
) != IEEE80211_FTYPE_DATA
) ||
926 is_multicast_ether_addr(hdr
->addr1
))
927 return priv
->hw_params
.bcast_sta_id
;
929 switch (priv
->iw_mode
) {
931 /* If we are a client station in a BSS network, use the special
932 * AP station entry (that's the only station we communicate with) */
933 case NL80211_IFTYPE_STATION
:
936 /* If we are an AP, then find the station, or use BCAST */
937 case NL80211_IFTYPE_AP
:
938 sta_id
= iwl_find_station(priv
, hdr
->addr1
);
939 if (sta_id
!= IWL_INVALID_STATION
)
941 return priv
->hw_params
.bcast_sta_id
;
943 /* If this frame is going out to an IBSS network, find the station,
944 * or create a new station table entry */
945 case NL80211_IFTYPE_ADHOC
:
946 sta_id
= iwl_find_station(priv
, hdr
->addr1
);
947 if (sta_id
!= IWL_INVALID_STATION
)
950 /* Create new station table entry */
951 sta_id
= iwl_add_station_flags(priv
, hdr
->addr1
,
954 if (sta_id
!= IWL_INVALID_STATION
)
957 IWL_DEBUG_DROP("Station %pM not in station map. "
958 "Defaulting to broadcast...\n",
960 iwl_print_hex_dump(priv
, IWL_DL_DROP
, (u8
*) hdr
, sizeof(*hdr
));
961 return priv
->hw_params
.bcast_sta_id
;
963 /* If we are in monitor mode, use BCAST. This is required for
964 * packet injection. */
965 case NL80211_IFTYPE_MONITOR
:
966 return priv
->hw_params
.bcast_sta_id
;
969 IWL_WARNING("Unknown mode of operation: %d\n", priv
->iw_mode
);
970 return priv
->hw_params
.bcast_sta_id
;
973 EXPORT_SYMBOL(iwl_get_sta_id
);
976 * iwl_sta_modify_enable_tid_tx - Enable Tx for this TID in station table
978 void iwl_sta_modify_enable_tid_tx(struct iwl_priv
*priv
, int sta_id
, int tid
)
982 /* Remove "disable" flag, to enable Tx for this TID */
983 spin_lock_irqsave(&priv
->sta_lock
, flags
);
984 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_TID_DISABLE_TX
;
985 priv
->stations
[sta_id
].sta
.tid_disable_tx
&= cpu_to_le16(~(1 << tid
));
986 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
987 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
989 iwl_send_add_sta(priv
, &priv
->stations
[sta_id
].sta
, CMD_ASYNC
);
991 EXPORT_SYMBOL(iwl_sta_modify_enable_tid_tx
);