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 struct iwl_addsta_cmd
*addsta
=
106 (struct iwl_addsta_cmd
*)cmd
->cmd
.payload
;
107 u8 sta_id
= addsta
->sta
.sta_id
;
110 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
114 res
= (struct iwl_rx_packet
*)skb
->data
;
115 if (res
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
116 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
121 switch (res
->u
.add_sta
.status
) {
122 case ADD_STA_SUCCESS_MSK
:
123 iwl_sta_ucode_activate(priv
, sta_id
);
126 IWL_DEBUG_HC("Received REPLY_ADD_STA:(0x%08X)\n",
127 res
->u
.add_sta
.status
);
131 /* We didn't cache the SKB; let the caller free it */
135 static int iwl_send_add_sta(struct iwl_priv
*priv
,
136 struct iwl_addsta_cmd
*sta
, u8 flags
)
138 struct iwl_rx_packet
*res
= NULL
;
140 u8 data
[sizeof(*sta
)];
141 struct iwl_host_cmd cmd
= {
147 if (flags
& CMD_ASYNC
)
148 cmd
.meta
.u
.callback
= iwl_add_sta_callback
;
150 cmd
.meta
.flags
|= CMD_WANT_SKB
;
152 cmd
.len
= priv
->cfg
->ops
->utils
->build_addsta_hcmd(sta
, data
);
153 ret
= iwl_send_cmd(priv
, &cmd
);
155 if (ret
|| (flags
& CMD_ASYNC
))
158 res
= (struct iwl_rx_packet
*)cmd
.meta
.u
.skb
->data
;
159 if (res
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
160 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
166 switch (res
->u
.add_sta
.status
) {
167 case ADD_STA_SUCCESS_MSK
:
168 iwl_sta_ucode_activate(priv
, sta
->sta
.sta_id
);
169 IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
173 IWL_WARNING("REPLY_ADD_STA failed\n");
178 priv
->alloc_rxb_skb
--;
179 dev_kfree_skb_any(cmd
.meta
.u
.skb
);
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_WARNING("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_flags - Add station to tables in driver and device
232 u8
iwl_add_station_flags(struct iwl_priv
*priv
, const u8
*addr
, int is_ap
,
233 u8 flags
, struct ieee80211_sta_ht_cap
*ht_info
)
236 int sta_id
= IWL_INVALID_STATION
;
237 struct iwl_station_entry
*station
;
238 unsigned long flags_spin
;
240 spin_lock_irqsave(&priv
->sta_lock
, flags_spin
);
243 else if (is_broadcast_ether_addr(addr
))
244 sta_id
= priv
->hw_params
.bcast_sta_id
;
246 for (i
= IWL_STA_ID
; i
< priv
->hw_params
.max_stations
; i
++) {
247 if (!compare_ether_addr(priv
->stations
[i
].sta
.sta
.addr
,
253 if (!priv
->stations
[i
].used
&&
254 sta_id
== IWL_INVALID_STATION
)
258 /* These two conditions have the same outcome, but keep them separate
259 since they have different meanings */
260 if (unlikely(sta_id
== IWL_INVALID_STATION
)) {
261 spin_unlock_irqrestore(&priv
->sta_lock
, flags_spin
);
265 if (priv
->stations
[sta_id
].used
&&
266 !compare_ether_addr(priv
->stations
[sta_id
].sta
.sta
.addr
, addr
)) {
267 spin_unlock_irqrestore(&priv
->sta_lock
, flags_spin
);
272 station
= &priv
->stations
[sta_id
];
273 station
->used
= IWL_STA_DRIVER_ACTIVE
;
274 IWL_DEBUG_ASSOC("Add STA to driver ID %d: %pM\n",
276 priv
->num_stations
++;
278 /* Set up the REPLY_ADD_STA command to send to device */
279 memset(&station
->sta
, 0, sizeof(struct iwl_addsta_cmd
));
280 memcpy(station
->sta
.sta
.addr
, addr
, ETH_ALEN
);
281 station
->sta
.mode
= 0;
282 station
->sta
.sta
.sta_id
= sta_id
;
283 station
->sta
.station_flags
= 0;
285 /* BCAST station and IBSS stations do not work in HT mode */
286 if (sta_id
!= priv
->hw_params
.bcast_sta_id
&&
287 priv
->iw_mode
!= NL80211_IFTYPE_ADHOC
)
288 iwl_set_ht_add_station(priv
, sta_id
, ht_info
);
290 spin_unlock_irqrestore(&priv
->sta_lock
, flags_spin
);
292 /* Add station to device's station table */
293 iwl_send_add_sta(priv
, &station
->sta
, flags
);
297 EXPORT_SYMBOL(iwl_add_station_flags
);
299 static void iwl_sta_ucode_deactivate(struct iwl_priv
*priv
, const char *addr
)
302 u8 sta_id
= iwl_find_station(priv
, addr
);
304 BUG_ON(sta_id
== IWL_INVALID_STATION
);
306 IWL_DEBUG_ASSOC("Removed STA from Ucode: %pM\n", addr
);
308 spin_lock_irqsave(&priv
->sta_lock
, flags
);
310 /* Ucode must be active and driver must be non active */
311 if (priv
->stations
[sta_id
].used
!= IWL_STA_UCODE_ACTIVE
)
312 IWL_ERROR("removed non active STA %d\n", sta_id
);
314 priv
->stations
[sta_id
].used
&= ~IWL_STA_UCODE_ACTIVE
;
316 memset(&priv
->stations
[sta_id
], 0, sizeof(struct iwl_station_entry
));
317 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
320 static int iwl_remove_sta_callback(struct iwl_priv
*priv
,
321 struct iwl_cmd
*cmd
, struct sk_buff
*skb
)
323 struct iwl_rx_packet
*res
= NULL
;
324 struct iwl_rem_sta_cmd
*rm_sta
=
325 (struct iwl_rem_sta_cmd
*)cmd
->cmd
.payload
;
326 const char *addr
= rm_sta
->addr
;
329 IWL_ERROR("Error: Response NULL in REPLY_REMOVE_STA.\n");
333 res
= (struct iwl_rx_packet
*)skb
->data
;
334 if (res
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
335 IWL_ERROR("Bad return from REPLY_REMOVE_STA (0x%08X)\n",
340 switch (res
->u
.rem_sta
.status
) {
341 case REM_STA_SUCCESS_MSK
:
342 iwl_sta_ucode_deactivate(priv
, addr
);
345 IWL_ERROR("REPLY_REMOVE_STA failed\n");
349 /* We didn't cache the SKB; let the caller free it */
353 static int iwl_send_remove_station(struct iwl_priv
*priv
, const u8
*addr
,
356 struct iwl_rx_packet
*res
= NULL
;
359 struct iwl_rem_sta_cmd rm_sta_cmd
;
361 struct iwl_host_cmd cmd
= {
362 .id
= REPLY_REMOVE_STA
,
363 .len
= sizeof(struct iwl_rem_sta_cmd
),
368 memset(&rm_sta_cmd
, 0, sizeof(rm_sta_cmd
));
369 rm_sta_cmd
.num_sta
= 1;
370 memcpy(&rm_sta_cmd
.addr
, addr
, ETH_ALEN
);
372 if (flags
& CMD_ASYNC
)
373 cmd
.meta
.u
.callback
= iwl_remove_sta_callback
;
375 cmd
.meta
.flags
|= CMD_WANT_SKB
;
376 ret
= iwl_send_cmd(priv
, &cmd
);
378 if (ret
|| (flags
& CMD_ASYNC
))
381 res
= (struct iwl_rx_packet
*)cmd
.meta
.u
.skb
->data
;
382 if (res
->hdr
.flags
& IWL_CMD_FAILED_MSK
) {
383 IWL_ERROR("Bad return from REPLY_REMOVE_STA (0x%08X)\n",
389 switch (res
->u
.rem_sta
.status
) {
390 case REM_STA_SUCCESS_MSK
:
391 iwl_sta_ucode_deactivate(priv
, addr
);
392 IWL_DEBUG_ASSOC("REPLY_REMOVE_STA PASSED\n");
396 IWL_ERROR("REPLY_REMOVE_STA failed\n");
401 priv
->alloc_rxb_skb
--;
402 dev_kfree_skb_any(cmd
.meta
.u
.skb
);
408 * iwl_remove_station - Remove driver's knowledge of station.
410 int iwl_remove_station(struct iwl_priv
*priv
, const u8
*addr
, int is_ap
)
412 int sta_id
= IWL_INVALID_STATION
;
413 int i
, ret
= -EINVAL
;
416 spin_lock_irqsave(&priv
->sta_lock
, flags
);
420 else if (is_broadcast_ether_addr(addr
))
421 sta_id
= priv
->hw_params
.bcast_sta_id
;
423 for (i
= IWL_STA_ID
; i
< priv
->hw_params
.max_stations
; i
++)
424 if (priv
->stations
[i
].used
&&
425 !compare_ether_addr(priv
->stations
[i
].sta
.sta
.addr
,
431 if (unlikely(sta_id
== IWL_INVALID_STATION
))
434 IWL_DEBUG_ASSOC("Removing STA from driver:%d %pM\n",
437 if (!(priv
->stations
[sta_id
].used
& IWL_STA_DRIVER_ACTIVE
)) {
438 IWL_ERROR("Removing %pM but non DRIVER active\n",
443 if (!(priv
->stations
[sta_id
].used
& IWL_STA_UCODE_ACTIVE
)) {
444 IWL_ERROR("Removing %pM but non UCODE active\n",
450 priv
->stations
[sta_id
].used
&= ~IWL_STA_DRIVER_ACTIVE
;
452 priv
->num_stations
--;
454 BUG_ON(priv
->num_stations
< 0);
456 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
458 ret
= iwl_send_remove_station(priv
, addr
, CMD_ASYNC
);
461 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
464 EXPORT_SYMBOL(iwl_remove_station
);
466 static int iwl_get_free_ucode_key_index(struct iwl_priv
*priv
)
470 for (i
= 0; i
< STA_KEY_MAX_NUM
; i
++)
471 if (!test_and_set_bit(i
, &priv
->ucode_key_table
))
477 int iwl_send_static_wepkey_cmd(struct iwl_priv
*priv
, u8 send_if_empty
)
479 int i
, not_empty
= 0;
480 u8 buff
[sizeof(struct iwl_wep_cmd
) +
481 sizeof(struct iwl_wep_key
) * WEP_KEYS_MAX
];
482 struct iwl_wep_cmd
*wep_cmd
= (struct iwl_wep_cmd
*)buff
;
483 size_t cmd_size
= sizeof(struct iwl_wep_cmd
);
484 struct iwl_host_cmd cmd
= {
487 .meta
.flags
= CMD_ASYNC
,
490 memset(wep_cmd
, 0, cmd_size
+
491 (sizeof(struct iwl_wep_key
) * WEP_KEYS_MAX
));
493 for (i
= 0; i
< WEP_KEYS_MAX
; i
++) {
494 wep_cmd
->key
[i
].key_index
= i
;
495 if (priv
->wep_keys
[i
].key_size
) {
496 wep_cmd
->key
[i
].key_offset
= i
;
499 wep_cmd
->key
[i
].key_offset
= WEP_INVALID_OFFSET
;
502 wep_cmd
->key
[i
].key_size
= priv
->wep_keys
[i
].key_size
;
503 memcpy(&wep_cmd
->key
[i
].key
[3], priv
->wep_keys
[i
].key
,
504 priv
->wep_keys
[i
].key_size
);
507 wep_cmd
->global_key_type
= WEP_KEY_WEP_TYPE
;
508 wep_cmd
->num_keys
= WEP_KEYS_MAX
;
510 cmd_size
+= sizeof(struct iwl_wep_key
) * WEP_KEYS_MAX
;
514 if (not_empty
|| send_if_empty
)
515 return iwl_send_cmd(priv
, &cmd
);
519 EXPORT_SYMBOL(iwl_send_static_wepkey_cmd
);
521 int iwl_remove_default_wep_key(struct iwl_priv
*priv
,
522 struct ieee80211_key_conf
*keyconf
)
527 spin_lock_irqsave(&priv
->sta_lock
, flags
);
529 if (!test_and_clear_bit(keyconf
->keyidx
, &priv
->ucode_key_table
))
530 IWL_ERROR("index %d not used in uCode key table.\n",
533 priv
->default_wep_key
--;
534 memset(&priv
->wep_keys
[keyconf
->keyidx
], 0, sizeof(priv
->wep_keys
[0]));
535 ret
= iwl_send_static_wepkey_cmd(priv
, 1);
536 IWL_DEBUG_WEP("Remove default WEP key: idx=%d ret=%d\n",
537 keyconf
->keyidx
, ret
);
538 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
542 EXPORT_SYMBOL(iwl_remove_default_wep_key
);
544 int iwl_set_default_wep_key(struct iwl_priv
*priv
,
545 struct ieee80211_key_conf
*keyconf
)
550 if (keyconf
->keylen
!= WEP_KEY_LEN_128
&&
551 keyconf
->keylen
!= WEP_KEY_LEN_64
) {
552 IWL_DEBUG_WEP("Bad WEP key length %d\n", keyconf
->keylen
);
556 keyconf
->flags
&= ~IEEE80211_KEY_FLAG_GENERATE_IV
;
557 keyconf
->hw_key_idx
= HW_KEY_DEFAULT
;
558 priv
->stations
[IWL_AP_ID
].keyinfo
.alg
= ALG_WEP
;
560 spin_lock_irqsave(&priv
->sta_lock
, flags
);
561 priv
->default_wep_key
++;
563 if (test_and_set_bit(keyconf
->keyidx
, &priv
->ucode_key_table
))
564 IWL_ERROR("index %d already used in uCode key table.\n",
567 priv
->wep_keys
[keyconf
->keyidx
].key_size
= keyconf
->keylen
;
568 memcpy(&priv
->wep_keys
[keyconf
->keyidx
].key
, &keyconf
->key
,
571 ret
= iwl_send_static_wepkey_cmd(priv
, 0);
572 IWL_DEBUG_WEP("Set default WEP key: len=%d idx=%d ret=%d\n",
573 keyconf
->keylen
, keyconf
->keyidx
, ret
);
574 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
578 EXPORT_SYMBOL(iwl_set_default_wep_key
);
580 static int iwl_set_wep_dynamic_key_info(struct iwl_priv
*priv
,
581 struct ieee80211_key_conf
*keyconf
,
585 __le16 key_flags
= 0;
588 keyconf
->flags
&= ~IEEE80211_KEY_FLAG_GENERATE_IV
;
590 key_flags
|= (STA_KEY_FLG_WEP
| STA_KEY_FLG_MAP_KEY_MSK
);
591 key_flags
|= cpu_to_le16(keyconf
->keyidx
<< STA_KEY_FLG_KEYID_POS
);
592 key_flags
&= ~STA_KEY_FLG_INVALID
;
594 if (keyconf
->keylen
== WEP_KEY_LEN_128
)
595 key_flags
|= STA_KEY_FLG_KEY_SIZE_MSK
;
597 if (sta_id
== priv
->hw_params
.bcast_sta_id
)
598 key_flags
|= STA_KEY_MULTICAST_MSK
;
600 spin_lock_irqsave(&priv
->sta_lock
, flags
);
602 priv
->stations
[sta_id
].keyinfo
.alg
= keyconf
->alg
;
603 priv
->stations
[sta_id
].keyinfo
.keylen
= keyconf
->keylen
;
604 priv
->stations
[sta_id
].keyinfo
.keyidx
= keyconf
->keyidx
;
606 memcpy(priv
->stations
[sta_id
].keyinfo
.key
,
607 keyconf
->key
, keyconf
->keylen
);
609 memcpy(&priv
->stations
[sta_id
].sta
.key
.key
[3],
610 keyconf
->key
, keyconf
->keylen
);
612 if ((priv
->stations
[sta_id
].sta
.key
.key_flags
& STA_KEY_FLG_ENCRYPT_MSK
)
613 == STA_KEY_FLG_NO_ENC
)
614 priv
->stations
[sta_id
].sta
.key
.key_offset
=
615 iwl_get_free_ucode_key_index(priv
);
616 /* else, we are overriding an existing key => no need to allocated room
619 priv
->stations
[sta_id
].sta
.key
.key_flags
= key_flags
;
620 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_KEY_MASK
;
621 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
623 ret
= iwl_send_add_sta(priv
, &priv
->stations
[sta_id
].sta
, CMD_ASYNC
);
625 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
630 static int iwl_set_ccmp_dynamic_key_info(struct iwl_priv
*priv
,
631 struct ieee80211_key_conf
*keyconf
,
635 __le16 key_flags
= 0;
637 key_flags
|= (STA_KEY_FLG_CCMP
| STA_KEY_FLG_MAP_KEY_MSK
);
638 key_flags
|= cpu_to_le16(keyconf
->keyidx
<< STA_KEY_FLG_KEYID_POS
);
639 key_flags
&= ~STA_KEY_FLG_INVALID
;
641 if (sta_id
== priv
->hw_params
.bcast_sta_id
)
642 key_flags
|= STA_KEY_MULTICAST_MSK
;
644 keyconf
->flags
|= IEEE80211_KEY_FLAG_GENERATE_IV
;
646 spin_lock_irqsave(&priv
->sta_lock
, flags
);
647 priv
->stations
[sta_id
].keyinfo
.alg
= keyconf
->alg
;
648 priv
->stations
[sta_id
].keyinfo
.keylen
= keyconf
->keylen
;
650 memcpy(priv
->stations
[sta_id
].keyinfo
.key
, keyconf
->key
,
653 memcpy(priv
->stations
[sta_id
].sta
.key
.key
, keyconf
->key
,
656 if ((priv
->stations
[sta_id
].sta
.key
.key_flags
& STA_KEY_FLG_ENCRYPT_MSK
)
657 == STA_KEY_FLG_NO_ENC
)
658 priv
->stations
[sta_id
].sta
.key
.key_offset
=
659 iwl_get_free_ucode_key_index(priv
);
660 /* else, we are overriding an existing key => no need to allocated room
663 priv
->stations
[sta_id
].sta
.key
.key_flags
= key_flags
;
664 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_KEY_MASK
;
665 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
667 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
669 IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
670 return iwl_send_add_sta(priv
, &priv
->stations
[sta_id
].sta
, CMD_ASYNC
);
673 static int iwl_set_tkip_dynamic_key_info(struct iwl_priv
*priv
,
674 struct ieee80211_key_conf
*keyconf
,
680 keyconf
->flags
|= IEEE80211_KEY_FLAG_GENERATE_IV
;
681 keyconf
->flags
|= IEEE80211_KEY_FLAG_GENERATE_MMIC
;
683 spin_lock_irqsave(&priv
->sta_lock
, flags
);
685 priv
->stations
[sta_id
].keyinfo
.alg
= keyconf
->alg
;
686 priv
->stations
[sta_id
].keyinfo
.keylen
= 16;
688 if ((priv
->stations
[sta_id
].sta
.key
.key_flags
& STA_KEY_FLG_ENCRYPT_MSK
)
689 == STA_KEY_FLG_NO_ENC
)
690 priv
->stations
[sta_id
].sta
.key
.key_offset
=
691 iwl_get_free_ucode_key_index(priv
);
692 /* else, we are overriding an existing key => no need to allocated room
695 /* This copy is actually not needed: we get the key with each TX */
696 memcpy(priv
->stations
[sta_id
].keyinfo
.key
, keyconf
->key
, 16);
698 memcpy(priv
->stations
[sta_id
].sta
.key
.key
, keyconf
->key
, 16);
700 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
705 void iwl_update_tkip_key(struct iwl_priv
*priv
,
706 struct ieee80211_key_conf
*keyconf
,
707 const u8
*addr
, u32 iv32
, u16
*phase1key
)
709 u8 sta_id
= IWL_INVALID_STATION
;
711 __le16 key_flags
= 0;
713 DECLARE_MAC_BUF(mac
);
715 sta_id
= iwl_find_station(priv
, addr
);
716 if (sta_id
== IWL_INVALID_STATION
) {
717 IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
722 if (iwl_scan_cancel(priv
)) {
723 /* cancel scan failed, just live w/ bad key and rely
724 briefly on SW decryption */
728 key_flags
|= (STA_KEY_FLG_TKIP
| STA_KEY_FLG_MAP_KEY_MSK
);
729 key_flags
|= cpu_to_le16(keyconf
->keyidx
<< STA_KEY_FLG_KEYID_POS
);
730 key_flags
&= ~STA_KEY_FLG_INVALID
;
732 if (sta_id
== priv
->hw_params
.bcast_sta_id
)
733 key_flags
|= STA_KEY_MULTICAST_MSK
;
735 spin_lock_irqsave(&priv
->sta_lock
, flags
);
737 priv
->stations
[sta_id
].sta
.key
.key_flags
= key_flags
;
738 priv
->stations
[sta_id
].sta
.key
.tkip_rx_tsc_byte2
= (u8
) iv32
;
740 for (i
= 0; i
< 5; i
++)
741 priv
->stations
[sta_id
].sta
.key
.tkip_rx_ttak
[i
] =
742 cpu_to_le16(phase1key
[i
]);
744 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_KEY_MASK
;
745 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
747 iwl_send_add_sta(priv
, &priv
->stations
[sta_id
].sta
, CMD_ASYNC
);
749 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
752 EXPORT_SYMBOL(iwl_update_tkip_key
);
754 int iwl_remove_dynamic_key(struct iwl_priv
*priv
,
755 struct ieee80211_key_conf
*keyconf
,
763 priv
->key_mapping_key
--;
765 spin_lock_irqsave(&priv
->sta_lock
, flags
);
766 key_flags
= le16_to_cpu(priv
->stations
[sta_id
].sta
.key
.key_flags
);
767 keyidx
= (key_flags
>> STA_KEY_FLG_KEYID_POS
) & 0x3;
769 IWL_DEBUG_WEP("Remove dynamic key: idx=%d sta=%d\n",
770 keyconf
->keyidx
, sta_id
);
772 if (keyconf
->keyidx
!= keyidx
) {
773 /* We need to remove a key with index different that the one
774 * in the uCode. This means that the key we need to remove has
775 * been replaced by another one with different index.
776 * Don't do anything and return ok
778 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
782 if (!test_and_clear_bit(priv
->stations
[sta_id
].sta
.key
.key_offset
,
783 &priv
->ucode_key_table
))
784 IWL_ERROR("index %d not used in uCode key table.\n",
785 priv
->stations
[sta_id
].sta
.key
.key_offset
);
786 memset(&priv
->stations
[sta_id
].keyinfo
, 0,
787 sizeof(struct iwl_hw_key
));
788 memset(&priv
->stations
[sta_id
].sta
.key
, 0,
789 sizeof(struct iwl4965_keyinfo
));
790 priv
->stations
[sta_id
].sta
.key
.key_flags
=
791 STA_KEY_FLG_NO_ENC
| STA_KEY_FLG_INVALID
;
792 priv
->stations
[sta_id
].sta
.key
.key_offset
= WEP_INVALID_OFFSET
;
793 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_KEY_MASK
;
794 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
796 ret
= iwl_send_add_sta(priv
, &priv
->stations
[sta_id
].sta
, CMD_ASYNC
);
797 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
800 EXPORT_SYMBOL(iwl_remove_dynamic_key
);
802 int iwl_set_dynamic_key(struct iwl_priv
*priv
,
803 struct ieee80211_key_conf
*keyconf
, u8 sta_id
)
807 priv
->key_mapping_key
++;
808 keyconf
->hw_key_idx
= HW_KEY_DYNAMIC
;
810 switch (keyconf
->alg
) {
812 ret
= iwl_set_ccmp_dynamic_key_info(priv
, keyconf
, sta_id
);
815 ret
= iwl_set_tkip_dynamic_key_info(priv
, keyconf
, sta_id
);
818 ret
= iwl_set_wep_dynamic_key_info(priv
, keyconf
, sta_id
);
821 IWL_ERROR("Unknown alg: %s alg = %d\n", __func__
, keyconf
->alg
);
825 IWL_DEBUG_WEP("Set dynamic key: alg= %d len=%d idx=%d sta=%d ret=%d\n",
826 keyconf
->alg
, keyconf
->keylen
, keyconf
->keyidx
,
831 EXPORT_SYMBOL(iwl_set_dynamic_key
);
833 #ifdef CONFIG_IWLWIFI_DEBUG
834 static void iwl_dump_lq_cmd(struct iwl_priv
*priv
,
835 struct iwl_link_quality_cmd
*lq
)
838 IWL_DEBUG_RATE("lq station id 0x%x\n", lq
->sta_id
);
839 IWL_DEBUG_RATE("lq ant 0x%X 0x%X\n",
840 lq
->general_params
.single_stream_ant_msk
,
841 lq
->general_params
.dual_stream_ant_msk
);
843 for (i
= 0; i
< LINK_QUAL_MAX_RETRY_NUM
; i
++)
844 IWL_DEBUG_RATE("lq index %d 0x%X\n",
845 i
, lq
->rs_table
[i
].rate_n_flags
);
848 static inline void iwl_dump_lq_cmd(struct iwl_priv
*priv
,
849 struct iwl_link_quality_cmd
*lq
)
854 int iwl_send_lq_cmd(struct iwl_priv
*priv
,
855 struct iwl_link_quality_cmd
*lq
, u8 flags
)
857 struct iwl_host_cmd cmd
= {
858 .id
= REPLY_TX_LINK_QUALITY_CMD
,
859 .len
= sizeof(struct iwl_link_quality_cmd
),
864 if ((lq
->sta_id
== 0xFF) &&
865 (priv
->iw_mode
== NL80211_IFTYPE_ADHOC
))
868 if (lq
->sta_id
== 0xFF)
869 lq
->sta_id
= IWL_AP_ID
;
871 iwl_dump_lq_cmd(priv
, lq
);
873 if (iwl_is_associated(priv
) && priv
->assoc_station_added
)
874 return iwl_send_cmd(priv
, &cmd
);
878 EXPORT_SYMBOL(iwl_send_lq_cmd
);
881 * iwl_sta_init_lq - Initialize a station's hardware rate table
883 * The uCode's station table contains a table of fallback rates
884 * for automatic fallback during transmission.
886 * NOTE: This sets up a default set of values. These will be replaced later
887 * if the driver's iwl-agn-rs rate scaling algorithm is used, instead of
890 * NOTE: Run REPLY_ADD_STA command to set up station table entry, before
891 * calling this function (which runs REPLY_TX_LINK_QUALITY_CMD,
892 * which requires station table entry to exist).
894 static void iwl_sta_init_lq(struct iwl_priv
*priv
, const u8
*addr
, int is_ap
)
897 struct iwl_link_quality_cmd link_cmd
= {
902 /* Set up the rate scaling to start at selected rate, fall back
903 * all the way down to 1M in IEEE order, and then spin on 1M */
905 r
= IWL_RATE_54M_INDEX
;
906 else if (priv
->band
== IEEE80211_BAND_5GHZ
)
907 r
= IWL_RATE_6M_INDEX
;
909 r
= IWL_RATE_1M_INDEX
;
911 for (i
= 0; i
< LINK_QUAL_MAX_RETRY_NUM
; i
++) {
913 if (r
>= IWL_FIRST_CCK_RATE
&& r
<= IWL_LAST_CCK_RATE
)
914 rate_flags
|= RATE_MCS_CCK_MSK
;
916 rate_flags
|= first_antenna(priv
->hw_params
.valid_tx_ant
) <<
919 link_cmd
.rs_table
[i
].rate_n_flags
=
920 iwl_hw_set_rate_n_flags(iwl_rates
[r
].plcp
, rate_flags
);
921 r
= iwl_get_prev_ieee_rate(r
);
924 link_cmd
.general_params
.single_stream_ant_msk
=
925 first_antenna(priv
->hw_params
.valid_tx_ant
);
926 link_cmd
.general_params
.dual_stream_ant_msk
= 3;
927 link_cmd
.agg_params
.agg_dis_start_th
= 3;
928 link_cmd
.agg_params
.agg_time_limit
= cpu_to_le16(4000);
930 /* Update the rate scaling for control frame Tx to AP */
931 link_cmd
.sta_id
= is_ap
? IWL_AP_ID
: priv
->hw_params
.bcast_sta_id
;
933 iwl_send_cmd_pdu_async(priv
, REPLY_TX_LINK_QUALITY_CMD
,
934 sizeof(link_cmd
), &link_cmd
, NULL
);
938 * iwl_rxon_add_station - add station into station table.
940 * there is only one AP station with id= IWL_AP_ID
941 * NOTE: mutex must be held before calling this function
943 int iwl_rxon_add_station(struct iwl_priv
*priv
, const u8
*addr
, int is_ap
)
945 struct ieee80211_sta
*sta
;
946 struct ieee80211_sta_ht_cap ht_config
;
947 struct ieee80211_sta_ht_cap
*cur_ht_config
= NULL
;
950 /* Add station to device's station table */
953 * XXX: This check is definitely not correct, if we're an AP
954 * it'll always be false which is not what we want, but
955 * it doesn't look like iwlagn is prepared to be an HT
958 if (priv
->current_ht_config
.is_ht
) {
960 sta
= ieee80211_find_sta(priv
->hw
, addr
);
962 memcpy(&ht_config
, &sta
->ht_cap
, sizeof(ht_config
));
963 cur_ht_config
= &ht_config
;
968 sta_id
= iwl_add_station_flags(priv
, addr
, is_ap
,
971 /* Set up default rate scaling table in device's station table */
972 iwl_sta_init_lq(priv
, addr
, is_ap
);
976 EXPORT_SYMBOL(iwl_rxon_add_station
);
979 * iwl_get_sta_id - Find station's index within station table
981 * If new IBSS station, create new entry in station table
983 int iwl_get_sta_id(struct iwl_priv
*priv
, struct ieee80211_hdr
*hdr
)
986 u16 fc
= le16_to_cpu(hdr
->frame_control
);
988 /* If this frame is broadcast or management, use broadcast station id */
989 if (((fc
& IEEE80211_FCTL_FTYPE
) != IEEE80211_FTYPE_DATA
) ||
990 is_multicast_ether_addr(hdr
->addr1
))
991 return priv
->hw_params
.bcast_sta_id
;
993 switch (priv
->iw_mode
) {
995 /* If we are a client station in a BSS network, use the special
996 * AP station entry (that's the only station we communicate with) */
997 case NL80211_IFTYPE_STATION
:
1000 /* If we are an AP, then find the station, or use BCAST */
1001 case NL80211_IFTYPE_AP
:
1002 sta_id
= iwl_find_station(priv
, hdr
->addr1
);
1003 if (sta_id
!= IWL_INVALID_STATION
)
1005 return priv
->hw_params
.bcast_sta_id
;
1007 /* If this frame is going out to an IBSS network, find the station,
1008 * or create a new station table entry */
1009 case NL80211_IFTYPE_ADHOC
:
1010 sta_id
= iwl_find_station(priv
, hdr
->addr1
);
1011 if (sta_id
!= IWL_INVALID_STATION
)
1014 /* Create new station table entry */
1015 sta_id
= iwl_add_station_flags(priv
, hdr
->addr1
,
1016 0, CMD_ASYNC
, NULL
);
1018 if (sta_id
!= IWL_INVALID_STATION
)
1021 IWL_DEBUG_DROP("Station %pM not in station map. "
1022 "Defaulting to broadcast...\n",
1024 iwl_print_hex_dump(priv
, IWL_DL_DROP
, (u8
*) hdr
, sizeof(*hdr
));
1025 return priv
->hw_params
.bcast_sta_id
;
1027 /* If we are in monitor mode, use BCAST. This is required for
1028 * packet injection. */
1029 case NL80211_IFTYPE_MONITOR
:
1030 return priv
->hw_params
.bcast_sta_id
;
1033 IWL_WARNING("Unknown mode of operation: %d\n", priv
->iw_mode
);
1034 return priv
->hw_params
.bcast_sta_id
;
1037 EXPORT_SYMBOL(iwl_get_sta_id
);
1040 * iwl_sta_tx_modify_enable_tid - Enable Tx for this TID in station table
1042 void iwl_sta_tx_modify_enable_tid(struct iwl_priv
*priv
, int sta_id
, int tid
)
1044 unsigned long flags
;
1046 /* Remove "disable" flag, to enable Tx for this TID */
1047 spin_lock_irqsave(&priv
->sta_lock
, flags
);
1048 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_TID_DISABLE_TX
;
1049 priv
->stations
[sta_id
].sta
.tid_disable_tx
&= cpu_to_le16(~(1 << tid
));
1050 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
1051 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
1053 iwl_send_add_sta(priv
, &priv
->stations
[sta_id
].sta
, CMD_ASYNC
);
1055 EXPORT_SYMBOL(iwl_sta_tx_modify_enable_tid
);
1057 int iwl_sta_rx_agg_start(struct iwl_priv
*priv
,
1058 const u8
*addr
, int tid
, u16 ssn
)
1060 unsigned long flags
;
1063 sta_id
= iwl_find_station(priv
, addr
);
1064 if (sta_id
== IWL_INVALID_STATION
)
1067 spin_lock_irqsave(&priv
->sta_lock
, flags
);
1068 priv
->stations
[sta_id
].sta
.station_flags_msk
= 0;
1069 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_ADDBA_TID_MSK
;
1070 priv
->stations
[sta_id
].sta
.add_immediate_ba_tid
= (u8
)tid
;
1071 priv
->stations
[sta_id
].sta
.add_immediate_ba_ssn
= cpu_to_le16(ssn
);
1072 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
1073 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
1075 return iwl_send_add_sta(priv
, &priv
->stations
[sta_id
].sta
,
1078 EXPORT_SYMBOL(iwl_sta_rx_agg_start
);
1080 int iwl_sta_rx_agg_stop(struct iwl_priv
*priv
, const u8
*addr
, int tid
)
1082 unsigned long flags
;
1085 sta_id
= iwl_find_station(priv
, addr
);
1086 if (sta_id
== IWL_INVALID_STATION
)
1089 spin_lock_irqsave(&priv
->sta_lock
, flags
);
1090 priv
->stations
[sta_id
].sta
.station_flags_msk
= 0;
1091 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= STA_MODIFY_DELBA_TID_MSK
;
1092 priv
->stations
[sta_id
].sta
.remove_immediate_ba_tid
= (u8
)tid
;
1093 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
1094 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
1096 return iwl_send_add_sta(priv
, &priv
->stations
[sta_id
].sta
,
1099 EXPORT_SYMBOL(iwl_sta_rx_agg_stop
);
1101 static void iwl_sta_modify_ps_wake(struct iwl_priv
*priv
, int sta_id
)
1103 unsigned long flags
;
1105 spin_lock_irqsave(&priv
->sta_lock
, flags
);
1106 priv
->stations
[sta_id
].sta
.station_flags
&= ~STA_FLG_PWR_SAVE_MSK
;
1107 priv
->stations
[sta_id
].sta
.station_flags_msk
= STA_FLG_PWR_SAVE_MSK
;
1108 priv
->stations
[sta_id
].sta
.sta
.modify_mask
= 0;
1109 priv
->stations
[sta_id
].sta
.mode
= STA_CONTROL_MODIFY_MSK
;
1110 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
1112 iwl_send_add_sta(priv
, &priv
->stations
[sta_id
].sta
, CMD_ASYNC
);
1115 void iwl_update_ps_mode(struct iwl_priv
*priv
, u16 ps_bit
, u8
*addr
)
1117 /* FIXME: need locking over ps_status ??? */
1118 u8 sta_id
= iwl_find_station(priv
, addr
);
1120 if (sta_id
!= IWL_INVALID_STATION
) {
1121 u8 sta_awake
= priv
->stations
[sta_id
].
1122 ps_status
== STA_PS_STATUS_WAKE
;
1124 if (sta_awake
&& ps_bit
)
1125 priv
->stations
[sta_id
].ps_status
= STA_PS_STATUS_SLEEP
;
1126 else if (!sta_awake
&& !ps_bit
) {
1127 iwl_sta_modify_ps_wake(priv
, sta_id
);
1128 priv
->stations
[sta_id
].ps_status
= STA_PS_STATUS_WAKE
;