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_sta_ht_cap *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_sta_ht_cap *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 rate_flags |= first_antenna(priv->hw_params.valid_tx_ant) <<
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 =
873 first_antenna(priv->hw_params.valid_tx_ant);
874 link_cmd.general_params.dual_stream_ant_msk = 3;
875 link_cmd.agg_params.agg_dis_start_th = 3;
876 link_cmd.agg_params.agg_time_limit = cpu_to_le16(4000);
878 /* Update the rate scaling for control frame Tx to AP */
879 link_cmd.sta_id = is_ap ? IWL_AP_ID : priv->hw_params.bcast_sta_id;
881 iwl_send_cmd_pdu_async(priv, REPLY_TX_LINK_QUALITY_CMD,
882 sizeof(link_cmd), &link_cmd, NULL);
886 * iwl_rxon_add_station - add station into station table.
888 * there is only one AP station with id= IWL_AP_ID
889 * NOTE: mutex must be held before calling this fnction
891 int iwl_rxon_add_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
895 /* Add station to device's station table */
896 struct ieee80211_conf *conf = &priv->hw->conf;
897 struct ieee80211_sta_ht_cap *cur_ht_config = &conf->ht_cap;
900 (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) &&
901 (priv->iw_mode == NL80211_IFTYPE_STATION))
902 sta_id = iwl_add_station_flags(priv, addr, is_ap,
905 sta_id = iwl_add_station_flags(priv, addr, is_ap,
908 /* Set up default rate scaling table in device's station table */
909 iwl_sta_init_lq(priv, addr, is_ap);
913 EXPORT_SYMBOL(iwl_rxon_add_station);
916 * iwl_get_sta_id - Find station's index within station table
918 * If new IBSS station, create new entry in station table
920 int iwl_get_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
923 u16 fc = le16_to_cpu(hdr->frame_control);
925 /* If this frame is broadcast or management, use broadcast station id */
926 if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
927 is_multicast_ether_addr(hdr->addr1))
928 return priv->hw_params.bcast_sta_id;
930 switch (priv->iw_mode) {
932 /* If we are a client station in a BSS network, use the special
933 * AP station entry (that's the only station we communicate with) */
934 case NL80211_IFTYPE_STATION:
937 /* If we are an AP, then find the station, or use BCAST */
938 case NL80211_IFTYPE_AP:
939 sta_id = iwl_find_station(priv, hdr->addr1);
940 if (sta_id != IWL_INVALID_STATION)
942 return priv->hw_params.bcast_sta_id;
944 /* If this frame is going out to an IBSS network, find the station,
945 * or create a new station table entry */
946 case NL80211_IFTYPE_ADHOC:
947 sta_id = iwl_find_station(priv, hdr->addr1);
948 if (sta_id != IWL_INVALID_STATION)
951 /* Create new station table entry */
952 sta_id = iwl_add_station_flags(priv, hdr->addr1,
955 if (sta_id != IWL_INVALID_STATION)
958 IWL_DEBUG_DROP("Station %pM not in station map. "
959 "Defaulting to broadcast...\n",
961 iwl_print_hex_dump(priv, IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
962 return priv->hw_params.bcast_sta_id;
964 /* If we are in monitor mode, use BCAST. This is required for
965 * packet injection. */
966 case NL80211_IFTYPE_MONITOR:
967 return priv->hw_params.bcast_sta_id;
970 IWL_WARNING("Unknown mode of operation: %d\n", priv->iw_mode);
971 return priv->hw_params.bcast_sta_id;
974 EXPORT_SYMBOL(iwl_get_sta_id);
977 * iwl_sta_modify_enable_tid_tx - Enable Tx for this TID in station table
979 void iwl_sta_modify_enable_tid_tx(struct iwl_priv *priv, int sta_id, int tid)
983 /* Remove "disable" flag, to enable Tx for this TID */
984 spin_lock_irqsave(&priv->sta_lock, flags);
985 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_TID_DISABLE_TX;
986 priv->stations[sta_id].sta.tid_disable_tx &= cpu_to_le16(~(1 << tid));
987 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
988 spin_unlock_irqrestore(&priv->sta_lock, flags);
990 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
992 EXPORT_SYMBOL(iwl_sta_modify_enable_tid_tx);