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 0x1 /* ucode entry is active */
40 #define IWL_STA_UCODE_ACTIVE 0x2 /* ucode entry is active */
42 u8 iwl_find_station(struct iwl_priv *priv, const u8 *addr)
46 int ret = IWL_INVALID_STATION;
50 if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) ||
51 (priv->iw_mode == IEEE80211_IF_TYPE_AP))
54 if (is_broadcast_ether_addr(addr))
55 return priv->hw_params.bcast_sta_id;
57 spin_lock_irqsave(&priv->sta_lock, flags);
58 for (i = start; i < priv->hw_params.max_stations; i++)
59 if (priv->stations[i].used &&
60 (!compare_ether_addr(priv->stations[i].sta.sta.addr,
66 IWL_DEBUG_ASSOC_LIMIT("can not find STA %s total %d\n",
67 print_mac(mac, addr), priv->num_stations);
70 spin_unlock_irqrestore(&priv->sta_lock, flags);
73 EXPORT_SYMBOL(iwl_find_station);
75 int iwl_get_ra_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
77 if (priv->iw_mode == IEEE80211_IF_TYPE_STA) {
80 u8 *da = ieee80211_get_DA(hdr);
81 return iwl_find_station(priv, da);
84 EXPORT_SYMBOL(iwl_get_ra_sta_id);
86 static int iwl_add_sta_callback(struct iwl_priv *priv,
87 struct iwl_cmd *cmd, struct sk_buff *skb)
89 struct iwl_rx_packet *res = NULL;
92 IWL_ERROR("Error: Response NULL in REPLY_ADD_STA.\n");
96 res = (struct iwl_rx_packet *)skb->data;
97 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
98 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
103 switch (res->u.add_sta.status) {
104 case ADD_STA_SUCCESS_MSK:
105 /* FIXME: implement iwl_sta_ucode_activate(priv, addr); */
108 IWL_DEBUG_HC("Received REPLY_ADD_STA:(0x%08X)\n",
109 res->u.add_sta.status);
113 /* We didn't cache the SKB; let the caller free it */
117 int iwl_send_add_sta(struct iwl_priv *priv,
118 struct iwl_addsta_cmd *sta, u8 flags)
120 struct iwl_rx_packet *res = NULL;
122 u8 data[sizeof(*sta)];
123 struct iwl_host_cmd cmd = {
129 if (flags & CMD_ASYNC)
130 cmd.meta.u.callback = iwl_add_sta_callback;
132 cmd.meta.flags |= CMD_WANT_SKB;
134 cmd.len = priv->cfg->ops->utils->build_addsta_hcmd(sta, data);
135 ret = iwl_send_cmd(priv, &cmd);
137 if (ret || (flags & CMD_ASYNC))
140 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
141 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
142 IWL_ERROR("Bad return from REPLY_ADD_STA (0x%08X)\n",
148 switch (res->u.add_sta.status) {
149 case ADD_STA_SUCCESS_MSK:
150 IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
154 IWL_WARNING("REPLY_ADD_STA failed\n");
159 priv->alloc_rxb_skb--;
160 dev_kfree_skb_any(cmd.meta.u.skb);
164 EXPORT_SYMBOL(iwl_send_add_sta);
166 static void iwl_set_ht_add_station(struct iwl_priv *priv, u8 index,
167 struct ieee80211_ht_info *sta_ht_inf)
172 if (!sta_ht_inf || !sta_ht_inf->ht_supported)
175 mimo_ps_mode = (sta_ht_inf->cap & IEEE80211_HT_CAP_MIMO_PS) >> 2;
177 sta_flags = priv->stations[index].sta.station_flags;
179 sta_flags &= ~(STA_FLG_RTS_MIMO_PROT_MSK | STA_FLG_MIMO_DIS_MSK);
181 switch (mimo_ps_mode) {
182 case WLAN_HT_CAP_MIMO_PS_STATIC:
183 sta_flags |= STA_FLG_MIMO_DIS_MSK;
185 case WLAN_HT_CAP_MIMO_PS_DYNAMIC:
186 sta_flags |= STA_FLG_RTS_MIMO_PROT_MSK;
188 case WLAN_HT_CAP_MIMO_PS_DISABLED:
191 IWL_WARNING("Invalid MIMO PS mode %d", mimo_ps_mode);
195 sta_flags |= cpu_to_le32(
196 (u32)sta_ht_inf->ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS);
198 sta_flags |= cpu_to_le32(
199 (u32)sta_ht_inf->ampdu_density << STA_FLG_AGG_MPDU_DENSITY_POS);
201 if (iwl_is_fat_tx_allowed(priv, sta_ht_inf))
202 sta_flags |= STA_FLG_FAT_EN_MSK;
204 sta_flags &= ~STA_FLG_FAT_EN_MSK;
206 priv->stations[index].sta.station_flags = sta_flags;
212 * iwl_add_station_flags - Add station to tables in driver and device
214 u8 iwl_add_station_flags(struct iwl_priv *priv, const u8 *addr, int is_ap,
215 u8 flags, struct ieee80211_ht_info *ht_info)
218 int index = IWL_INVALID_STATION;
219 struct iwl_station_entry *station;
220 unsigned long flags_spin;
221 DECLARE_MAC_BUF(mac);
223 spin_lock_irqsave(&priv->sta_lock, flags_spin);
226 else if (is_broadcast_ether_addr(addr))
227 index = priv->hw_params.bcast_sta_id;
229 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++) {
230 if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
236 if (!priv->stations[i].used &&
237 index == IWL_INVALID_STATION)
242 /* These two conditions have the same outcome, but keep them separate
243 since they have different meanings */
244 if (unlikely(index == IWL_INVALID_STATION)) {
245 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
249 if (priv->stations[index].used &&
250 !compare_ether_addr(priv->stations[index].sta.sta.addr, addr)) {
251 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
256 IWL_DEBUG_ASSOC("Add STA ID %d: %s\n", index, print_mac(mac, addr));
257 station = &priv->stations[index];
259 priv->num_stations++;
261 /* Set up the REPLY_ADD_STA command to send to device */
262 memset(&station->sta, 0, sizeof(struct iwl_addsta_cmd));
263 memcpy(station->sta.sta.addr, addr, ETH_ALEN);
264 station->sta.mode = 0;
265 station->sta.sta.sta_id = index;
266 station->sta.station_flags = 0;
268 /* BCAST station and IBSS stations do not work in HT mode */
269 if (index != priv->hw_params.bcast_sta_id &&
270 priv->iw_mode != IEEE80211_IF_TYPE_IBSS)
271 iwl_set_ht_add_station(priv, index, ht_info);
273 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
275 /* Add station to device's station table */
276 iwl_send_add_sta(priv, &station->sta, flags);
280 EXPORT_SYMBOL(iwl_add_station_flags);
282 static int iwl_sta_ucode_deactivate(struct iwl_priv *priv, const char *addr)
286 DECLARE_MAC_BUF(mac);
288 sta_id = iwl_find_station(priv, addr);
289 if (sta_id != IWL_INVALID_STATION) {
290 IWL_DEBUG_ASSOC("Removed STA from Ucode: %s\n",
291 print_mac(mac, addr));
292 spin_lock_irqsave(&priv->sta_lock, flags);
293 priv->stations[sta_id].used &= ~IWL_STA_UCODE_ACTIVE;
294 memset(&priv->stations[sta_id], 0,
295 sizeof(struct iwl_station_entry));
296 spin_unlock_irqrestore(&priv->sta_lock, flags);
302 static int iwl_remove_sta_callback(struct iwl_priv *priv,
303 struct iwl_cmd *cmd, struct sk_buff *skb)
305 struct iwl_rx_packet *res = NULL;
306 const char *addr = cmd->cmd.rm_sta.addr;
309 IWL_ERROR("Error: Response NULL in REPLY_REMOVE_STA.\n");
313 res = (struct iwl_rx_packet *)skb->data;
314 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
315 IWL_ERROR("Bad return from REPLY_REMOVE_STA (0x%08X)\n",
320 switch (res->u.rem_sta.status) {
321 case REM_STA_SUCCESS_MSK:
322 iwl_sta_ucode_deactivate(priv, addr);
328 /* We didn't cache the SKB; let the caller free it */
332 static int iwl_send_remove_station(struct iwl_priv *priv, const u8 *addr,
335 struct iwl_rx_packet *res = NULL;
338 struct iwl_rem_sta_cmd rm_sta_cmd;
340 struct iwl_host_cmd cmd = {
341 .id = REPLY_REMOVE_STA,
342 .len = sizeof(struct iwl_rem_sta_cmd),
347 memset(&rm_sta_cmd, 0, sizeof(rm_sta_cmd));
348 rm_sta_cmd.num_sta = 1;
349 memcpy(&rm_sta_cmd.addr, addr , ETH_ALEN);
351 if (flags & CMD_ASYNC)
352 cmd.meta.u.callback = iwl_remove_sta_callback;
354 cmd.meta.flags |= CMD_WANT_SKB;
355 ret = iwl_send_cmd(priv, &cmd);
357 if (ret || (flags & CMD_ASYNC))
360 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
361 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
362 IWL_ERROR("Bad return from REPLY_REMOVE_STA (0x%08X)\n",
368 switch (res->u.rem_sta.status) {
369 case REM_STA_SUCCESS_MSK:
370 iwl_sta_ucode_deactivate(priv, addr);
371 IWL_DEBUG_ASSOC("REPLY_REMOVE_STA PASSED\n");
375 IWL_ERROR("REPLY_REMOVE_STA failed\n");
380 priv->alloc_rxb_skb--;
381 dev_kfree_skb_any(cmd.meta.u.skb);
387 * iwl_remove_station - Remove driver's knowledge of station.
389 u8 iwl_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
391 int index = IWL_INVALID_STATION;
395 spin_lock_irqsave(&priv->sta_lock, flags);
399 else if (is_broadcast_ether_addr(addr))
400 index = priv->hw_params.bcast_sta_id;
402 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++)
403 if (priv->stations[i].used &&
404 !compare_ether_addr(priv->stations[i].sta.sta.addr,
410 if (unlikely(index == IWL_INVALID_STATION))
413 if (priv->stations[index].used) {
414 priv->stations[index].used = 0;
415 priv->num_stations--;
418 BUG_ON(priv->num_stations < 0);
419 spin_unlock_irqrestore(&priv->sta_lock, flags);
420 iwl_send_remove_station(priv, addr, CMD_ASYNC);
423 spin_unlock_irqrestore(&priv->sta_lock, flags);
426 EXPORT_SYMBOL(iwl_remove_station);
427 static int iwl_get_free_ucode_key_index(struct iwl_priv *priv)
431 for (i = 0; i < STA_KEY_MAX_NUM; i++)
432 if (!test_and_set_bit(i, &priv->ucode_key_table))
438 int iwl_send_static_wepkey_cmd(struct iwl_priv *priv, u8 send_if_empty)
440 int i, not_empty = 0;
441 u8 buff[sizeof(struct iwl_wep_cmd) +
442 sizeof(struct iwl_wep_key) * WEP_KEYS_MAX];
443 struct iwl_wep_cmd *wep_cmd = (struct iwl_wep_cmd *)buff;
444 size_t cmd_size = sizeof(struct iwl_wep_cmd);
445 struct iwl_host_cmd cmd = {
448 .meta.flags = CMD_ASYNC,
451 memset(wep_cmd, 0, cmd_size +
452 (sizeof(struct iwl_wep_key) * WEP_KEYS_MAX));
454 for (i = 0; i < WEP_KEYS_MAX ; i++) {
455 wep_cmd->key[i].key_index = i;
456 if (priv->wep_keys[i].key_size) {
457 wep_cmd->key[i].key_offset = i;
460 wep_cmd->key[i].key_offset = WEP_INVALID_OFFSET;
463 wep_cmd->key[i].key_size = priv->wep_keys[i].key_size;
464 memcpy(&wep_cmd->key[i].key[3], priv->wep_keys[i].key,
465 priv->wep_keys[i].key_size);
468 wep_cmd->global_key_type = WEP_KEY_WEP_TYPE;
469 wep_cmd->num_keys = WEP_KEYS_MAX;
471 cmd_size += sizeof(struct iwl_wep_key) * WEP_KEYS_MAX;
475 if (not_empty || send_if_empty)
476 return iwl_send_cmd(priv, &cmd);
480 EXPORT_SYMBOL(iwl_send_static_wepkey_cmd);
482 int iwl_remove_default_wep_key(struct iwl_priv *priv,
483 struct ieee80211_key_conf *keyconf)
488 spin_lock_irqsave(&priv->sta_lock, flags);
490 if (!test_and_clear_bit(keyconf->keyidx, &priv->ucode_key_table))
491 IWL_ERROR("index %d not used in uCode key table.\n",
494 priv->default_wep_key--;
495 memset(&priv->wep_keys[keyconf->keyidx], 0, sizeof(priv->wep_keys[0]));
496 ret = iwl_send_static_wepkey_cmd(priv, 1);
497 IWL_DEBUG_WEP("Remove default WEP key: idx=%d ret=%d\n",
498 keyconf->keyidx, ret);
499 spin_unlock_irqrestore(&priv->sta_lock, flags);
503 EXPORT_SYMBOL(iwl_remove_default_wep_key);
505 int iwl_set_default_wep_key(struct iwl_priv *priv,
506 struct ieee80211_key_conf *keyconf)
511 if (keyconf->keylen != WEP_KEY_LEN_128 &&
512 keyconf->keylen != WEP_KEY_LEN_64) {
513 IWL_DEBUG_WEP("Bad WEP key length %d\n", keyconf->keylen);
517 keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;
518 keyconf->hw_key_idx = HW_KEY_DEFAULT;
519 priv->stations[IWL_AP_ID].keyinfo.alg = ALG_WEP;
521 spin_lock_irqsave(&priv->sta_lock, flags);
522 priv->default_wep_key++;
524 if (test_and_set_bit(keyconf->keyidx, &priv->ucode_key_table))
525 IWL_ERROR("index %d already used in uCode key table.\n",
528 priv->wep_keys[keyconf->keyidx].key_size = keyconf->keylen;
529 memcpy(&priv->wep_keys[keyconf->keyidx].key, &keyconf->key,
532 ret = iwl_send_static_wepkey_cmd(priv, 0);
533 IWL_DEBUG_WEP("Set default WEP key: len=%d idx=%d ret=%d\n",
534 keyconf->keylen, keyconf->keyidx, ret);
535 spin_unlock_irqrestore(&priv->sta_lock, flags);
539 EXPORT_SYMBOL(iwl_set_default_wep_key);
541 static int iwl_set_wep_dynamic_key_info(struct iwl_priv *priv,
542 struct ieee80211_key_conf *keyconf,
546 __le16 key_flags = 0;
549 keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;
551 key_flags |= (STA_KEY_FLG_WEP | STA_KEY_FLG_MAP_KEY_MSK);
552 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
553 key_flags &= ~STA_KEY_FLG_INVALID;
555 if (keyconf->keylen == WEP_KEY_LEN_128)
556 key_flags |= STA_KEY_FLG_KEY_SIZE_MSK;
558 if (sta_id == priv->hw_params.bcast_sta_id)
559 key_flags |= STA_KEY_MULTICAST_MSK;
561 spin_lock_irqsave(&priv->sta_lock, flags);
563 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
564 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
565 priv->stations[sta_id].keyinfo.keyidx = keyconf->keyidx;
567 memcpy(priv->stations[sta_id].keyinfo.key,
568 keyconf->key, keyconf->keylen);
570 memcpy(&priv->stations[sta_id].sta.key.key[3],
571 keyconf->key, keyconf->keylen);
573 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
574 == STA_KEY_FLG_NO_ENC)
575 priv->stations[sta_id].sta.key.key_offset =
576 iwl_get_free_ucode_key_index(priv);
577 /* else, we are overriding an existing key => no need to allocated room
580 priv->stations[sta_id].sta.key.key_flags = key_flags;
581 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
582 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
584 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
586 spin_unlock_irqrestore(&priv->sta_lock, flags);
591 static int iwl_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
592 struct ieee80211_key_conf *keyconf,
596 __le16 key_flags = 0;
598 key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK);
599 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
600 key_flags &= ~STA_KEY_FLG_INVALID;
602 if (sta_id == priv->hw_params.bcast_sta_id)
603 key_flags |= STA_KEY_MULTICAST_MSK;
605 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
607 spin_lock_irqsave(&priv->sta_lock, flags);
608 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
609 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
611 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
614 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
617 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
618 == STA_KEY_FLG_NO_ENC)
619 priv->stations[sta_id].sta.key.key_offset =
620 iwl_get_free_ucode_key_index(priv);
621 /* else, we are overriding an existing key => no need to allocated room
624 priv->stations[sta_id].sta.key.key_flags = key_flags;
625 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
626 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
628 spin_unlock_irqrestore(&priv->sta_lock, flags);
630 IWL_DEBUG_INFO("hwcrypto: modify ucode station key info\n");
631 return iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
634 static int iwl_set_tkip_dynamic_key_info(struct iwl_priv *priv,
635 struct ieee80211_key_conf *keyconf,
641 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
642 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
644 spin_lock_irqsave(&priv->sta_lock, flags);
646 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
647 priv->stations[sta_id].keyinfo.keylen = 16;
649 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
650 == STA_KEY_FLG_NO_ENC)
651 priv->stations[sta_id].sta.key.key_offset =
652 iwl_get_free_ucode_key_index(priv);
653 /* else, we are overriding an existing key => no need to allocated room
656 /* This copy is acutally not needed: we get the key with each TX */
657 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key, 16);
659 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key, 16);
661 spin_unlock_irqrestore(&priv->sta_lock, flags);
666 int iwl_remove_dynamic_key(struct iwl_priv *priv,
667 struct ieee80211_key_conf *keyconf,
675 priv->key_mapping_key--;
677 spin_lock_irqsave(&priv->sta_lock, flags);
678 key_flags = le16_to_cpu(priv->stations[sta_id].sta.key.key_flags);
679 keyidx = (key_flags >> STA_KEY_FLG_KEYID_POS) & 0x3;
681 IWL_DEBUG_WEP("Remove dynamic key: idx=%d sta=%d\n",
682 keyconf->keyidx, sta_id);
684 if (keyconf->keyidx != keyidx) {
685 /* We need to remove a key with index different that the one
686 * in the uCode. This means that the key we need to remove has
687 * been replaced by another one with different index.
688 * Don't do anything and return ok
690 spin_unlock_irqrestore(&priv->sta_lock, flags);
694 if (!test_and_clear_bit(priv->stations[sta_id].sta.key.key_offset,
695 &priv->ucode_key_table))
696 IWL_ERROR("index %d not used in uCode key table.\n",
697 priv->stations[sta_id].sta.key.key_offset);
698 memset(&priv->stations[sta_id].keyinfo, 0,
699 sizeof(struct iwl_hw_key));
700 memset(&priv->stations[sta_id].sta.key, 0,
701 sizeof(struct iwl4965_keyinfo));
702 priv->stations[sta_id].sta.key.key_flags =
703 STA_KEY_FLG_NO_ENC | STA_KEY_FLG_INVALID;
704 priv->stations[sta_id].sta.key.key_offset = WEP_INVALID_OFFSET;
705 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
706 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
708 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
709 spin_unlock_irqrestore(&priv->sta_lock, flags);
712 EXPORT_SYMBOL(iwl_remove_dynamic_key);
714 int iwl_set_dynamic_key(struct iwl_priv *priv,
715 struct ieee80211_key_conf *keyconf, u8 sta_id)
719 priv->key_mapping_key++;
720 keyconf->hw_key_idx = HW_KEY_DYNAMIC;
722 switch (keyconf->alg) {
724 ret = iwl_set_ccmp_dynamic_key_info(priv, keyconf, sta_id);
727 ret = iwl_set_tkip_dynamic_key_info(priv, keyconf, sta_id);
730 ret = iwl_set_wep_dynamic_key_info(priv, keyconf, sta_id);
733 IWL_ERROR("Unknown alg: %s alg = %d\n", __func__, keyconf->alg);
737 IWL_DEBUG_WEP("Set dynamic key: alg= %d len=%d idx=%d sta=%d ret=%d\n",
738 keyconf->alg, keyconf->keylen, keyconf->keyidx,
743 EXPORT_SYMBOL(iwl_set_dynamic_key);
745 #ifdef CONFIG_IWLWIFI_DEBUG
746 static void iwl_dump_lq_cmd(struct iwl_priv *priv,
747 struct iwl_link_quality_cmd *lq)
750 IWL_DEBUG_RATE("lq station id 0x%x\n", lq->sta_id);
751 IWL_DEBUG_RATE("lq dta 0x%X 0x%X\n",
752 lq->general_params.single_stream_ant_msk,
753 lq->general_params.dual_stream_ant_msk);
755 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++)
756 IWL_DEBUG_RATE("lq index %d 0x%X\n",
757 i, lq->rs_table[i].rate_n_flags);
760 static inline void iwl_dump_lq_cmd(struct iwl_priv *priv,
761 struct iwl_link_quality_cmd *lq)
766 int iwl_send_lq_cmd(struct iwl_priv *priv,
767 struct iwl_link_quality_cmd *lq, u8 flags)
769 struct iwl_host_cmd cmd = {
770 .id = REPLY_TX_LINK_QUALITY_CMD,
771 .len = sizeof(struct iwl_link_quality_cmd),
776 if ((lq->sta_id == 0xFF) &&
777 (priv->iw_mode == IEEE80211_IF_TYPE_IBSS))
780 if (lq->sta_id == 0xFF)
781 lq->sta_id = IWL_AP_ID;
783 iwl_dump_lq_cmd(priv,lq);
785 if (iwl_is_associated(priv) && priv->assoc_station_added &&
786 priv->lq_mngr.lq_ready)
787 return iwl_send_cmd(priv, &cmd);
791 EXPORT_SYMBOL(iwl_send_lq_cmd);
794 * iwl_sta_init_lq - Initialize a station's hardware rate table
796 * The uCode's station table contains a table of fallback rates
797 * for automatic fallback during transmission.
799 * NOTE: This sets up a default set of values. These will be replaced later
800 * if the driver's iwl-4965-rs rate scaling algorithm is used, instead of
803 * NOTE: Run REPLY_ADD_STA command to set up station table entry, before
804 * calling this function (which runs REPLY_TX_LINK_QUALITY_CMD,
805 * which requires station table entry to exist).
807 static void iwl_sta_init_lq(struct iwl_priv *priv, const u8 *addr, int is_ap)
810 struct iwl_link_quality_cmd link_cmd = {
815 /* Set up the rate scaling to start at selected rate, fall back
816 * all the way down to 1M in IEEE order, and then spin on 1M */
818 r = IWL_RATE_54M_INDEX;
819 else if (priv->band == IEEE80211_BAND_5GHZ)
820 r = IWL_RATE_6M_INDEX;
822 r = IWL_RATE_1M_INDEX;
824 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) {
826 if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE)
827 rate_flags |= RATE_MCS_CCK_MSK;
829 /* Use Tx antenna B only */
830 rate_flags |= RATE_MCS_ANT_B_MSK; /*FIXME:RS*/
832 link_cmd.rs_table[i].rate_n_flags =
833 iwl_hw_set_rate_n_flags(iwl_rates[r].plcp, rate_flags);
834 r = iwl4965_get_prev_ieee_rate(r);
837 link_cmd.general_params.single_stream_ant_msk = 2;
838 link_cmd.general_params.dual_stream_ant_msk = 3;
839 link_cmd.agg_params.agg_dis_start_th = 3;
840 link_cmd.agg_params.agg_time_limit = cpu_to_le16(4000);
842 /* Update the rate scaling for control frame Tx to AP */
843 link_cmd.sta_id = is_ap ? IWL_AP_ID : priv->hw_params.bcast_sta_id;
845 iwl_send_cmd_pdu_async(priv, REPLY_TX_LINK_QUALITY_CMD,
846 sizeof(link_cmd), &link_cmd, NULL);
849 * iwl_rxon_add_station - add station into station table.
851 * there is only one AP station with id= IWL_AP_ID
852 * NOTE: mutex must be held before calling this fnction
854 int iwl_rxon_add_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
858 /* Add station to device's station table */
859 struct ieee80211_conf *conf = &priv->hw->conf;
860 struct ieee80211_ht_info *cur_ht_config = &conf->ht_conf;
863 (conf->flags & IEEE80211_CONF_SUPPORT_HT_MODE) &&
864 (priv->iw_mode == IEEE80211_IF_TYPE_STA))
865 sta_id = iwl_add_station_flags(priv, addr, is_ap,
868 sta_id = iwl_add_station_flags(priv, addr, is_ap,
871 /* Set up default rate scaling table in device's station table */
872 iwl_sta_init_lq(priv, addr, is_ap);
876 EXPORT_SYMBOL(iwl_rxon_add_station);
879 * iwl_get_sta_id - Find station's index within station table
881 * If new IBSS station, create new entry in station table
883 int iwl_get_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
886 u16 fc = le16_to_cpu(hdr->frame_control);
887 DECLARE_MAC_BUF(mac);
889 /* If this frame is broadcast or management, use broadcast station id */
890 if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
891 is_multicast_ether_addr(hdr->addr1))
892 return priv->hw_params.bcast_sta_id;
894 switch (priv->iw_mode) {
896 /* If we are a client station in a BSS network, use the special
897 * AP station entry (that's the only station we communicate with) */
898 case IEEE80211_IF_TYPE_STA:
901 /* If we are an AP, then find the station, or use BCAST */
902 case IEEE80211_IF_TYPE_AP:
903 sta_id = iwl_find_station(priv, hdr->addr1);
904 if (sta_id != IWL_INVALID_STATION)
906 return priv->hw_params.bcast_sta_id;
908 /* If this frame is going out to an IBSS network, find the station,
909 * or create a new station table entry */
910 case IEEE80211_IF_TYPE_IBSS:
911 sta_id = iwl_find_station(priv, hdr->addr1);
912 if (sta_id != IWL_INVALID_STATION)
915 /* Create new station table entry */
916 sta_id = iwl_add_station_flags(priv, hdr->addr1,
919 if (sta_id != IWL_INVALID_STATION)
922 IWL_DEBUG_DROP("Station %s not in station map. "
923 "Defaulting to broadcast...\n",
924 print_mac(mac, hdr->addr1));
925 iwl_print_hex_dump(priv, IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
926 return priv->hw_params.bcast_sta_id;
929 IWL_WARNING("Unknown mode of operation: %d", priv->iw_mode);
930 return priv->hw_params.bcast_sta_id;
933 EXPORT_SYMBOL(iwl_get_sta_id);
936 * iwl_sta_modify_enable_tid_tx - Enable Tx for this TID in station table
938 void iwl_sta_modify_enable_tid_tx(struct iwl_priv *priv, int sta_id, int tid)
942 /* Remove "disable" flag, to enable Tx for this TID */
943 spin_lock_irqsave(&priv->sta_lock, flags);
944 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_TID_DISABLE_TX;
945 priv->stations[sta_id].sta.tid_disable_tx &= cpu_to_le16(~(1 << tid));
946 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
947 spin_unlock_irqrestore(&priv->sta_lock, flags);
949 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
951 EXPORT_SYMBOL(iwl_sta_modify_enable_tid_tx);