1 /******************************************************************************
3 * Copyright(c) 2003 - 2009 Intel Corporation. All rights reserved.
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
28 *****************************************************************************/
30 #include <net/mac80211.h>
31 #include <linux/etherdevice.h>
37 #define IWL_STA_DRIVER_ACTIVE BIT(0) /* driver entry is active */
38 #define IWL_STA_UCODE_ACTIVE BIT(1) /* ucode entry is active */
40 u8 iwl_find_station(struct iwl_priv *priv, const u8 *addr)
44 int ret = IWL_INVALID_STATION;
47 if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) ||
48 (priv->iw_mode == NL80211_IFTYPE_AP))
51 if (is_broadcast_ether_addr(addr))
52 return priv->hw_params.bcast_sta_id;
54 spin_lock_irqsave(&priv->sta_lock, flags);
55 for (i = start; i < priv->hw_params.max_stations; i++)
56 if (priv->stations[i].used &&
57 (!compare_ether_addr(priv->stations[i].sta.sta.addr,
63 IWL_DEBUG_ASSOC_LIMIT("can not find STA %pM total %d\n",
64 addr, priv->num_stations);
67 spin_unlock_irqrestore(&priv->sta_lock, flags);
70 EXPORT_SYMBOL(iwl_find_station);
72 int iwl_get_ra_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
74 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
77 u8 *da = ieee80211_get_DA(hdr);
78 return iwl_find_station(priv, da);
81 EXPORT_SYMBOL(iwl_get_ra_sta_id);
83 static void iwl_sta_ucode_activate(struct iwl_priv *priv, u8 sta_id)
87 spin_lock_irqsave(&priv->sta_lock, flags);
89 if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE))
90 IWL_ERR(priv, "ACTIVATE a non DRIVER active station %d\n",
93 priv->stations[sta_id].used |= IWL_STA_UCODE_ACTIVE;
94 IWL_DEBUG_ASSOC("Added STA to Ucode: %pM\n",
95 priv->stations[sta_id].sta.sta.addr);
97 spin_unlock_irqrestore(&priv->sta_lock, flags);
100 static int iwl_add_sta_callback(struct iwl_priv *priv,
101 struct iwl_cmd *cmd, struct sk_buff *skb)
103 struct iwl_rx_packet *res = NULL;
104 struct iwl_addsta_cmd *addsta =
105 (struct iwl_addsta_cmd *)cmd->cmd.payload;
106 u8 sta_id = addsta->sta.sta_id;
109 IWL_ERR(priv, "Error: Response NULL in REPLY_ADD_STA.\n");
113 res = (struct iwl_rx_packet *)skb->data;
114 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
115 IWL_ERR(priv, "Bad return from REPLY_ADD_STA (0x%08X)\n",
120 switch (res->u.add_sta.status) {
121 case ADD_STA_SUCCESS_MSK:
122 iwl_sta_ucode_activate(priv, sta_id);
125 IWL_DEBUG_HC("Received REPLY_ADD_STA:(0x%08X)\n",
126 res->u.add_sta.status);
130 /* We didn't cache the SKB; let the caller free it */
134 static int iwl_send_add_sta(struct iwl_priv *priv,
135 struct iwl_addsta_cmd *sta, u8 flags)
137 struct iwl_rx_packet *res = NULL;
139 u8 data[sizeof(*sta)];
140 struct iwl_host_cmd cmd = {
146 if (flags & CMD_ASYNC)
147 cmd.meta.u.callback = iwl_add_sta_callback;
149 cmd.meta.flags |= CMD_WANT_SKB;
151 cmd.len = priv->cfg->ops->utils->build_addsta_hcmd(sta, data);
152 ret = iwl_send_cmd(priv, &cmd);
154 if (ret || (flags & CMD_ASYNC))
157 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
158 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
159 IWL_ERR(priv, "Bad return from REPLY_ADD_STA (0x%08X)\n",
165 switch (res->u.add_sta.status) {
166 case ADD_STA_SUCCESS_MSK:
167 iwl_sta_ucode_activate(priv, sta->sta.sta_id);
168 IWL_DEBUG_INFO("REPLY_ADD_STA PASSED\n");
172 IWL_WARN(priv, "REPLY_ADD_STA failed\n");
177 priv->alloc_rxb_skb--;
178 dev_kfree_skb_any(cmd.meta.u.skb);
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_WARN(priv, "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_ERR(priv, "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 struct iwl_rem_sta_cmd *rm_sta =
324 (struct iwl_rem_sta_cmd *)cmd->cmd.payload;
325 const char *addr = rm_sta->addr;
328 IWL_ERR(priv, "Error: Response NULL in REPLY_REMOVE_STA.\n");
332 res = (struct iwl_rx_packet *)skb->data;
333 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
334 IWL_ERR(priv, "Bad return from REPLY_REMOVE_STA (0x%08X)\n",
339 switch (res->u.rem_sta.status) {
340 case REM_STA_SUCCESS_MSK:
341 iwl_sta_ucode_deactivate(priv, addr);
344 IWL_ERR(priv, "REPLY_REMOVE_STA failed\n");
348 /* We didn't cache the SKB; let the caller free it */
352 static int iwl_send_remove_station(struct iwl_priv *priv, const u8 *addr,
355 struct iwl_rx_packet *res = NULL;
358 struct iwl_rem_sta_cmd rm_sta_cmd;
360 struct iwl_host_cmd cmd = {
361 .id = REPLY_REMOVE_STA,
362 .len = sizeof(struct iwl_rem_sta_cmd),
367 memset(&rm_sta_cmd, 0, sizeof(rm_sta_cmd));
368 rm_sta_cmd.num_sta = 1;
369 memcpy(&rm_sta_cmd.addr, addr , ETH_ALEN);
371 if (flags & CMD_ASYNC)
372 cmd.meta.u.callback = iwl_remove_sta_callback;
374 cmd.meta.flags |= CMD_WANT_SKB;
375 ret = iwl_send_cmd(priv, &cmd);
377 if (ret || (flags & CMD_ASYNC))
380 res = (struct iwl_rx_packet *)cmd.meta.u.skb->data;
381 if (res->hdr.flags & IWL_CMD_FAILED_MSK) {
382 IWL_ERR(priv, "Bad return from REPLY_REMOVE_STA (0x%08X)\n",
388 switch (res->u.rem_sta.status) {
389 case REM_STA_SUCCESS_MSK:
390 iwl_sta_ucode_deactivate(priv, addr);
391 IWL_DEBUG_ASSOC("REPLY_REMOVE_STA PASSED\n");
395 IWL_ERR(priv, "REPLY_REMOVE_STA failed\n");
400 priv->alloc_rxb_skb--;
401 dev_kfree_skb_any(cmd.meta.u.skb);
407 * iwl_remove_station - Remove driver's knowledge of station.
409 int iwl_remove_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
411 int sta_id = IWL_INVALID_STATION;
412 int i, ret = -EINVAL;
415 spin_lock_irqsave(&priv->sta_lock, flags);
419 else if (is_broadcast_ether_addr(addr))
420 sta_id = priv->hw_params.bcast_sta_id;
422 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++)
423 if (priv->stations[i].used &&
424 !compare_ether_addr(priv->stations[i].sta.sta.addr,
430 if (unlikely(sta_id == IWL_INVALID_STATION))
433 IWL_DEBUG_ASSOC("Removing STA from driver:%d %pM\n",
436 if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) {
437 IWL_ERR(priv, "Removing %pM but non DRIVER active\n",
442 if (!(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) {
443 IWL_ERR(priv, "Removing %pM but non UCODE active\n",
449 priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE;
451 priv->num_stations--;
453 BUG_ON(priv->num_stations < 0);
455 spin_unlock_irqrestore(&priv->sta_lock, flags);
457 ret = iwl_send_remove_station(priv, addr, CMD_ASYNC);
460 spin_unlock_irqrestore(&priv->sta_lock, flags);
463 EXPORT_SYMBOL(iwl_remove_station);
466 * iwl_clear_stations_table - Clear the driver's station table
468 * NOTE: This does not clear or otherwise alter the device's station table.
470 void iwl_clear_stations_table(struct iwl_priv *priv)
474 spin_lock_irqsave(&priv->sta_lock, flags);
476 if (iwl_is_alive(priv) &&
477 !test_bit(STATUS_EXIT_PENDING, &priv->status) &&
478 iwl_send_cmd_pdu_async(priv, REPLY_REMOVE_ALL_STA, 0, NULL, NULL))
479 IWL_ERR(priv, "Couldn't clear the station table\n");
481 priv->num_stations = 0;
482 memset(priv->stations, 0, sizeof(priv->stations));
484 spin_unlock_irqrestore(&priv->sta_lock, flags);
486 EXPORT_SYMBOL(iwl_clear_stations_table);
488 static int iwl_get_free_ucode_key_index(struct iwl_priv *priv)
492 for (i = 0; i < STA_KEY_MAX_NUM; i++)
493 if (!test_and_set_bit(i, &priv->ucode_key_table))
496 return WEP_INVALID_OFFSET;
499 int iwl_send_static_wepkey_cmd(struct iwl_priv *priv, u8 send_if_empty)
501 int i, not_empty = 0;
502 u8 buff[sizeof(struct iwl_wep_cmd) +
503 sizeof(struct iwl_wep_key) * WEP_KEYS_MAX];
504 struct iwl_wep_cmd *wep_cmd = (struct iwl_wep_cmd *)buff;
505 size_t cmd_size = sizeof(struct iwl_wep_cmd);
506 struct iwl_host_cmd cmd = {
509 .meta.flags = CMD_ASYNC,
512 memset(wep_cmd, 0, cmd_size +
513 (sizeof(struct iwl_wep_key) * WEP_KEYS_MAX));
515 for (i = 0; i < WEP_KEYS_MAX ; i++) {
516 wep_cmd->key[i].key_index = i;
517 if (priv->wep_keys[i].key_size) {
518 wep_cmd->key[i].key_offset = i;
521 wep_cmd->key[i].key_offset = WEP_INVALID_OFFSET;
524 wep_cmd->key[i].key_size = priv->wep_keys[i].key_size;
525 memcpy(&wep_cmd->key[i].key[3], priv->wep_keys[i].key,
526 priv->wep_keys[i].key_size);
529 wep_cmd->global_key_type = WEP_KEY_WEP_TYPE;
530 wep_cmd->num_keys = WEP_KEYS_MAX;
532 cmd_size += sizeof(struct iwl_wep_key) * WEP_KEYS_MAX;
536 if (not_empty || send_if_empty)
537 return iwl_send_cmd(priv, &cmd);
541 EXPORT_SYMBOL(iwl_send_static_wepkey_cmd);
543 int iwl_remove_default_wep_key(struct iwl_priv *priv,
544 struct ieee80211_key_conf *keyconf)
549 spin_lock_irqsave(&priv->sta_lock, flags);
551 if (!test_and_clear_bit(keyconf->keyidx, &priv->ucode_key_table))
552 IWL_ERR(priv, "index %d not used in uCode key table.\n",
555 priv->default_wep_key--;
556 memset(&priv->wep_keys[keyconf->keyidx], 0, sizeof(priv->wep_keys[0]));
557 ret = iwl_send_static_wepkey_cmd(priv, 1);
558 IWL_DEBUG_WEP("Remove default WEP key: idx=%d ret=%d\n",
559 keyconf->keyidx, ret);
560 spin_unlock_irqrestore(&priv->sta_lock, flags);
564 EXPORT_SYMBOL(iwl_remove_default_wep_key);
566 int iwl_set_default_wep_key(struct iwl_priv *priv,
567 struct ieee80211_key_conf *keyconf)
572 if (keyconf->keylen != WEP_KEY_LEN_128 &&
573 keyconf->keylen != WEP_KEY_LEN_64) {
574 IWL_DEBUG_WEP("Bad WEP key length %d\n", keyconf->keylen);
578 keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;
579 keyconf->hw_key_idx = HW_KEY_DEFAULT;
580 priv->stations[IWL_AP_ID].keyinfo.alg = ALG_WEP;
582 spin_lock_irqsave(&priv->sta_lock, flags);
583 priv->default_wep_key++;
585 if (test_and_set_bit(keyconf->keyidx, &priv->ucode_key_table))
586 IWL_ERR(priv, "index %d already used in uCode key table.\n",
589 priv->wep_keys[keyconf->keyidx].key_size = keyconf->keylen;
590 memcpy(&priv->wep_keys[keyconf->keyidx].key, &keyconf->key,
593 ret = iwl_send_static_wepkey_cmd(priv, 0);
594 IWL_DEBUG_WEP("Set default WEP key: len=%d idx=%d ret=%d\n",
595 keyconf->keylen, keyconf->keyidx, ret);
596 spin_unlock_irqrestore(&priv->sta_lock, flags);
600 EXPORT_SYMBOL(iwl_set_default_wep_key);
602 static int iwl_set_wep_dynamic_key_info(struct iwl_priv *priv,
603 struct ieee80211_key_conf *keyconf,
607 __le16 key_flags = 0;
610 keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;
612 key_flags |= (STA_KEY_FLG_WEP | STA_KEY_FLG_MAP_KEY_MSK);
613 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
614 key_flags &= ~STA_KEY_FLG_INVALID;
616 if (keyconf->keylen == WEP_KEY_LEN_128)
617 key_flags |= STA_KEY_FLG_KEY_SIZE_MSK;
619 if (sta_id == priv->hw_params.bcast_sta_id)
620 key_flags |= STA_KEY_MULTICAST_MSK;
622 spin_lock_irqsave(&priv->sta_lock, flags);
624 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
625 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
626 priv->stations[sta_id].keyinfo.keyidx = keyconf->keyidx;
628 memcpy(priv->stations[sta_id].keyinfo.key,
629 keyconf->key, keyconf->keylen);
631 memcpy(&priv->stations[sta_id].sta.key.key[3],
632 keyconf->key, keyconf->keylen);
634 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
635 == STA_KEY_FLG_NO_ENC)
636 priv->stations[sta_id].sta.key.key_offset =
637 iwl_get_free_ucode_key_index(priv);
638 /* else, we are overriding an existing key => no need to allocated room
641 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
642 "no space for new kew");
644 priv->stations[sta_id].sta.key.key_flags = key_flags;
645 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
646 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
648 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
650 spin_unlock_irqrestore(&priv->sta_lock, flags);
655 static int iwl_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
656 struct ieee80211_key_conf *keyconf,
660 __le16 key_flags = 0;
663 key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK);
664 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
665 key_flags &= ~STA_KEY_FLG_INVALID;
667 if (sta_id == priv->hw_params.bcast_sta_id)
668 key_flags |= STA_KEY_MULTICAST_MSK;
670 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
672 spin_lock_irqsave(&priv->sta_lock, flags);
673 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
674 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
676 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
679 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
682 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
683 == STA_KEY_FLG_NO_ENC)
684 priv->stations[sta_id].sta.key.key_offset =
685 iwl_get_free_ucode_key_index(priv);
686 /* else, we are overriding an existing key => no need to allocated room
689 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
690 "no space for new kew");
692 priv->stations[sta_id].sta.key.key_flags = key_flags;
693 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
694 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
696 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
698 spin_unlock_irqrestore(&priv->sta_lock, flags);
703 static int iwl_set_tkip_dynamic_key_info(struct iwl_priv *priv,
704 struct ieee80211_key_conf *keyconf,
710 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
711 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
713 spin_lock_irqsave(&priv->sta_lock, flags);
715 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
716 priv->stations[sta_id].keyinfo.keylen = 16;
718 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
719 == STA_KEY_FLG_NO_ENC)
720 priv->stations[sta_id].sta.key.key_offset =
721 iwl_get_free_ucode_key_index(priv);
722 /* else, we are overriding an existing key => no need to allocated room
725 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
726 "no space for new kew");
728 /* This copy is acutally not needed: we get the key with each TX */
729 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key, 16);
731 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key, 16);
733 spin_unlock_irqrestore(&priv->sta_lock, flags);
738 void iwl_update_tkip_key(struct iwl_priv *priv,
739 struct ieee80211_key_conf *keyconf,
740 const u8 *addr, u32 iv32, u16 *phase1key)
742 u8 sta_id = IWL_INVALID_STATION;
744 __le16 key_flags = 0;
746 DECLARE_MAC_BUF(mac);
748 sta_id = iwl_find_station(priv, addr);
749 if (sta_id == IWL_INVALID_STATION) {
750 IWL_DEBUG_MAC80211("leave - %pM not in station map.\n",
755 if (iwl_scan_cancel(priv)) {
756 /* cancel scan failed, just live w/ bad key and rely
757 briefly on SW decryption */
761 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
762 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
763 key_flags &= ~STA_KEY_FLG_INVALID;
765 if (sta_id == priv->hw_params.bcast_sta_id)
766 key_flags |= STA_KEY_MULTICAST_MSK;
768 spin_lock_irqsave(&priv->sta_lock, flags);
770 priv->stations[sta_id].sta.key.key_flags = key_flags;
771 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
773 for (i = 0; i < 5; i++)
774 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
775 cpu_to_le16(phase1key[i]);
777 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
778 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
780 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
782 spin_unlock_irqrestore(&priv->sta_lock, flags);
785 EXPORT_SYMBOL(iwl_update_tkip_key);
787 int iwl_remove_dynamic_key(struct iwl_priv *priv,
788 struct ieee80211_key_conf *keyconf,
796 priv->key_mapping_key--;
798 spin_lock_irqsave(&priv->sta_lock, flags);
799 key_flags = le16_to_cpu(priv->stations[sta_id].sta.key.key_flags);
800 keyidx = (key_flags >> STA_KEY_FLG_KEYID_POS) & 0x3;
802 IWL_DEBUG_WEP("Remove dynamic key: idx=%d sta=%d\n",
803 keyconf->keyidx, sta_id);
805 if (keyconf->keyidx != keyidx) {
806 /* We need to remove a key with index different that the one
807 * in the uCode. This means that the key we need to remove has
808 * been replaced by another one with different index.
809 * Don't do anything and return ok
811 spin_unlock_irqrestore(&priv->sta_lock, flags);
815 if (priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET) {
816 IWL_WARN(priv, "Removing wrong key %d 0x%x\n",
817 keyconf->keyidx, key_flags);
818 spin_unlock_irqrestore(&priv->sta_lock, flags);
822 if (!test_and_clear_bit(priv->stations[sta_id].sta.key.key_offset,
823 &priv->ucode_key_table))
824 IWL_ERR(priv, "index %d not used in uCode key table.\n",
825 priv->stations[sta_id].sta.key.key_offset);
826 memset(&priv->stations[sta_id].keyinfo, 0,
827 sizeof(struct iwl_hw_key));
828 memset(&priv->stations[sta_id].sta.key, 0,
829 sizeof(struct iwl4965_keyinfo));
830 priv->stations[sta_id].sta.key.key_flags =
831 STA_KEY_FLG_NO_ENC | STA_KEY_FLG_INVALID;
832 priv->stations[sta_id].sta.key.key_offset = WEP_INVALID_OFFSET;
833 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
834 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
836 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
837 spin_unlock_irqrestore(&priv->sta_lock, flags);
840 EXPORT_SYMBOL(iwl_remove_dynamic_key);
842 int iwl_set_dynamic_key(struct iwl_priv *priv,
843 struct ieee80211_key_conf *keyconf, u8 sta_id)
847 priv->key_mapping_key++;
848 keyconf->hw_key_idx = HW_KEY_DYNAMIC;
850 switch (keyconf->alg) {
852 ret = iwl_set_ccmp_dynamic_key_info(priv, keyconf, sta_id);
855 ret = iwl_set_tkip_dynamic_key_info(priv, keyconf, sta_id);
858 ret = iwl_set_wep_dynamic_key_info(priv, keyconf, sta_id);
862 "Unknown alg: %s alg = %d\n", __func__, keyconf->alg);
866 IWL_DEBUG_WEP("Set dynamic key: alg= %d len=%d idx=%d sta=%d ret=%d\n",
867 keyconf->alg, keyconf->keylen, keyconf->keyidx,
872 EXPORT_SYMBOL(iwl_set_dynamic_key);
874 #ifdef CONFIG_IWLWIFI_DEBUG
875 static void iwl_dump_lq_cmd(struct iwl_priv *priv,
876 struct iwl_link_quality_cmd *lq)
879 IWL_DEBUG_RATE("lq station id 0x%x\n", lq->sta_id);
880 IWL_DEBUG_RATE("lq ant 0x%X 0x%X\n",
881 lq->general_params.single_stream_ant_msk,
882 lq->general_params.dual_stream_ant_msk);
884 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++)
885 IWL_DEBUG_RATE("lq index %d 0x%X\n",
886 i, lq->rs_table[i].rate_n_flags);
889 static inline void iwl_dump_lq_cmd(struct iwl_priv *priv,
890 struct iwl_link_quality_cmd *lq)
895 int iwl_send_lq_cmd(struct iwl_priv *priv,
896 struct iwl_link_quality_cmd *lq, u8 flags)
898 struct iwl_host_cmd cmd = {
899 .id = REPLY_TX_LINK_QUALITY_CMD,
900 .len = sizeof(struct iwl_link_quality_cmd),
905 if ((lq->sta_id == 0xFF) &&
906 (priv->iw_mode == NL80211_IFTYPE_ADHOC))
909 if (lq->sta_id == 0xFF)
910 lq->sta_id = IWL_AP_ID;
912 iwl_dump_lq_cmd(priv, lq);
914 if (iwl_is_associated(priv) && priv->assoc_station_added)
915 return iwl_send_cmd(priv, &cmd);
919 EXPORT_SYMBOL(iwl_send_lq_cmd);
922 * iwl_sta_init_lq - Initialize a station's hardware rate table
924 * The uCode's station table contains a table of fallback rates
925 * for automatic fallback during transmission.
927 * NOTE: This sets up a default set of values. These will be replaced later
928 * if the driver's iwl-agn-rs rate scaling algorithm is used, instead of
931 * NOTE: Run REPLY_ADD_STA command to set up station table entry, before
932 * calling this function (which runs REPLY_TX_LINK_QUALITY_CMD,
933 * which requires station table entry to exist).
935 static void iwl_sta_init_lq(struct iwl_priv *priv, const u8 *addr, int is_ap)
938 struct iwl_link_quality_cmd link_cmd = {
943 /* Set up the rate scaling to start at selected rate, fall back
944 * all the way down to 1M in IEEE order, and then spin on 1M */
946 r = IWL_RATE_54M_INDEX;
947 else if (priv->band == IEEE80211_BAND_5GHZ)
948 r = IWL_RATE_6M_INDEX;
950 r = IWL_RATE_1M_INDEX;
952 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) {
954 if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE)
955 rate_flags |= RATE_MCS_CCK_MSK;
957 rate_flags |= first_antenna(priv->hw_params.valid_tx_ant) <<
960 link_cmd.rs_table[i].rate_n_flags =
961 iwl_hw_set_rate_n_flags(iwl_rates[r].plcp, rate_flags);
962 r = iwl_get_prev_ieee_rate(r);
965 link_cmd.general_params.single_stream_ant_msk =
966 first_antenna(priv->hw_params.valid_tx_ant);
967 link_cmd.general_params.dual_stream_ant_msk = 3;
968 link_cmd.agg_params.agg_dis_start_th = 3;
969 link_cmd.agg_params.agg_time_limit = cpu_to_le16(4000);
971 /* Update the rate scaling for control frame Tx to AP */
972 link_cmd.sta_id = is_ap ? IWL_AP_ID : priv->hw_params.bcast_sta_id;
974 iwl_send_cmd_pdu_async(priv, REPLY_TX_LINK_QUALITY_CMD,
975 sizeof(link_cmd), &link_cmd, NULL);
979 * iwl_rxon_add_station - add station into station table.
981 * there is only one AP station with id= IWL_AP_ID
982 * NOTE: mutex must be held before calling this function
984 int iwl_rxon_add_station(struct iwl_priv *priv, const u8 *addr, int is_ap)
986 struct ieee80211_sta *sta;
987 struct ieee80211_sta_ht_cap ht_config;
988 struct ieee80211_sta_ht_cap *cur_ht_config = NULL;
991 /* Add station to device's station table */
994 * XXX: This check is definitely not correct, if we're an AP
995 * it'll always be false which is not what we want, but
996 * it doesn't look like iwlagn is prepared to be an HT
999 if (priv->current_ht_config.is_ht) {
1001 sta = ieee80211_find_sta(priv->hw, addr);
1003 memcpy(&ht_config, &sta->ht_cap, sizeof(ht_config));
1004 cur_ht_config = &ht_config;
1009 sta_id = iwl_add_station_flags(priv, addr, is_ap,
1012 /* Set up default rate scaling table in device's station table */
1013 iwl_sta_init_lq(priv, addr, is_ap);
1017 EXPORT_SYMBOL(iwl_rxon_add_station);
1020 * iwl_get_sta_id - Find station's index within station table
1022 * If new IBSS station, create new entry in station table
1024 int iwl_get_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
1027 u16 fc = le16_to_cpu(hdr->frame_control);
1029 /* If this frame is broadcast or management, use broadcast station id */
1030 if (((fc & IEEE80211_FCTL_FTYPE) != IEEE80211_FTYPE_DATA) ||
1031 is_multicast_ether_addr(hdr->addr1))
1032 return priv->hw_params.bcast_sta_id;
1034 switch (priv->iw_mode) {
1036 /* If we are a client station in a BSS network, use the special
1037 * AP station entry (that's the only station we communicate with) */
1038 case NL80211_IFTYPE_STATION:
1041 /* If we are an AP, then find the station, or use BCAST */
1042 case NL80211_IFTYPE_AP:
1043 sta_id = iwl_find_station(priv, hdr->addr1);
1044 if (sta_id != IWL_INVALID_STATION)
1046 return priv->hw_params.bcast_sta_id;
1048 /* If this frame is going out to an IBSS network, find the station,
1049 * or create a new station table entry */
1050 case NL80211_IFTYPE_ADHOC:
1051 sta_id = iwl_find_station(priv, hdr->addr1);
1052 if (sta_id != IWL_INVALID_STATION)
1055 /* Create new station table entry */
1056 sta_id = iwl_add_station_flags(priv, hdr->addr1,
1057 0, CMD_ASYNC, NULL);
1059 if (sta_id != IWL_INVALID_STATION)
1062 IWL_DEBUG_DROP("Station %pM not in station map. "
1063 "Defaulting to broadcast...\n",
1065 iwl_print_hex_dump(priv, IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
1066 return priv->hw_params.bcast_sta_id;
1068 /* If we are in monitor mode, use BCAST. This is required for
1069 * packet injection. */
1070 case NL80211_IFTYPE_MONITOR:
1071 return priv->hw_params.bcast_sta_id;
1074 IWL_WARN(priv, "Unknown mode of operation: %d\n",
1076 return priv->hw_params.bcast_sta_id;
1079 EXPORT_SYMBOL(iwl_get_sta_id);
1082 * iwl_sta_tx_modify_enable_tid - Enable Tx for this TID in station table
1084 void iwl_sta_tx_modify_enable_tid(struct iwl_priv *priv, int sta_id, int tid)
1086 unsigned long flags;
1088 /* Remove "disable" flag, to enable Tx for this TID */
1089 spin_lock_irqsave(&priv->sta_lock, flags);
1090 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_TID_DISABLE_TX;
1091 priv->stations[sta_id].sta.tid_disable_tx &= cpu_to_le16(~(1 << tid));
1092 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1093 spin_unlock_irqrestore(&priv->sta_lock, flags);
1095 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
1097 EXPORT_SYMBOL(iwl_sta_tx_modify_enable_tid);
1099 int iwl_sta_rx_agg_start(struct iwl_priv *priv,
1100 const u8 *addr, int tid, u16 ssn)
1102 unsigned long flags;
1105 sta_id = iwl_find_station(priv, addr);
1106 if (sta_id == IWL_INVALID_STATION)
1109 spin_lock_irqsave(&priv->sta_lock, flags);
1110 priv->stations[sta_id].sta.station_flags_msk = 0;
1111 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_ADDBA_TID_MSK;
1112 priv->stations[sta_id].sta.add_immediate_ba_tid = (u8)tid;
1113 priv->stations[sta_id].sta.add_immediate_ba_ssn = cpu_to_le16(ssn);
1114 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1115 spin_unlock_irqrestore(&priv->sta_lock, flags);
1117 return iwl_send_add_sta(priv, &priv->stations[sta_id].sta,
1120 EXPORT_SYMBOL(iwl_sta_rx_agg_start);
1122 int iwl_sta_rx_agg_stop(struct iwl_priv *priv, const u8 *addr, int tid)
1124 unsigned long flags;
1127 sta_id = iwl_find_station(priv, addr);
1128 if (sta_id == IWL_INVALID_STATION)
1131 spin_lock_irqsave(&priv->sta_lock, flags);
1132 priv->stations[sta_id].sta.station_flags_msk = 0;
1133 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_DELBA_TID_MSK;
1134 priv->stations[sta_id].sta.remove_immediate_ba_tid = (u8)tid;
1135 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1136 spin_unlock_irqrestore(&priv->sta_lock, flags);
1138 return iwl_send_add_sta(priv, &priv->stations[sta_id].sta,
1141 EXPORT_SYMBOL(iwl_sta_rx_agg_stop);
1143 static void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id)
1145 unsigned long flags;
1147 spin_lock_irqsave(&priv->sta_lock, flags);
1148 priv->stations[sta_id].sta.station_flags &= ~STA_FLG_PWR_SAVE_MSK;
1149 priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK;
1150 priv->stations[sta_id].sta.sta.modify_mask = 0;
1151 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1152 spin_unlock_irqrestore(&priv->sta_lock, flags);
1154 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
1157 void iwl_update_ps_mode(struct iwl_priv *priv, u16 ps_bit, u8 *addr)
1159 /* FIXME: need locking over ps_status ??? */
1160 u8 sta_id = iwl_find_station(priv, addr);
1162 if (sta_id != IWL_INVALID_STATION) {
1163 u8 sta_awake = priv->stations[sta_id].
1164 ps_status == STA_PS_STATUS_WAKE;
1166 if (sta_awake && ps_bit)
1167 priv->stations[sta_id].ps_status = STA_PS_STATUS_SLEEP;
1168 else if (!sta_awake && !ps_bit) {
1169 iwl_sta_modify_ps_wake(priv, sta_id);
1170 priv->stations[sta_id].ps_status = STA_PS_STATUS_WAKE;