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(priv, "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(priv, "Added STA to Ucode: %pM\n",
95 priv->stations[sta_id].sta.sta.addr);
97 spin_unlock_irqrestore(&priv->sta_lock, flags);
100 static void iwl_add_sta_callback(struct iwl_priv *priv,
101 struct iwl_device_cmd *cmd,
102 struct iwl_rx_packet *pkt)
104 struct iwl_addsta_cmd *addsta =
105 (struct iwl_addsta_cmd *)cmd->cmd.payload;
106 u8 sta_id = addsta->sta.sta_id;
108 if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
109 IWL_ERR(priv, "Bad return from REPLY_ADD_STA (0x%08X)\n",
114 switch (pkt->u.add_sta.status) {
115 case ADD_STA_SUCCESS_MSK:
116 iwl_sta_ucode_activate(priv, sta_id);
119 IWL_DEBUG_HC(priv, "Received REPLY_ADD_STA:(0x%08X)\n",
120 pkt->u.add_sta.status);
125 int iwl_send_add_sta(struct iwl_priv *priv,
126 struct iwl_addsta_cmd *sta, u8 flags)
128 struct iwl_rx_packet *pkt = NULL;
130 u8 data[sizeof(*sta)];
131 struct iwl_host_cmd cmd = {
137 if (flags & CMD_ASYNC)
138 cmd.callback = iwl_add_sta_callback;
140 cmd.flags |= CMD_WANT_SKB;
142 cmd.len = priv->cfg->ops->utils->build_addsta_hcmd(sta, data);
143 ret = iwl_send_cmd(priv, &cmd);
145 if (ret || (flags & CMD_ASYNC))
148 pkt = (struct iwl_rx_packet *)cmd.reply_page;
149 if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
150 IWL_ERR(priv, "Bad return from REPLY_ADD_STA (0x%08X)\n",
156 switch (pkt->u.add_sta.status) {
157 case ADD_STA_SUCCESS_MSK:
158 iwl_sta_ucode_activate(priv, sta->sta.sta_id);
159 IWL_DEBUG_INFO(priv, "REPLY_ADD_STA PASSED\n");
163 IWL_WARN(priv, "REPLY_ADD_STA failed\n");
168 priv->alloc_rxb_page--;
169 free_pages(cmd.reply_page, priv->hw_params.rx_page_order);
173 EXPORT_SYMBOL(iwl_send_add_sta);
175 static void iwl_set_ht_add_station(struct iwl_priv *priv, u8 index,
176 struct ieee80211_sta_ht_cap *sta_ht_inf)
181 if (!sta_ht_inf || !sta_ht_inf->ht_supported)
184 mimo_ps_mode = (sta_ht_inf->cap & IEEE80211_HT_CAP_SM_PS) >> 2;
185 IWL_DEBUG_ASSOC(priv, "spatial multiplexing power save mode: %s\n",
186 (mimo_ps_mode == WLAN_HT_CAP_SM_PS_STATIC) ?
188 (mimo_ps_mode == WLAN_HT_CAP_SM_PS_DYNAMIC) ?
189 "dynamic" : "disabled");
191 sta_flags = priv->stations[index].sta.station_flags;
193 sta_flags &= ~(STA_FLG_RTS_MIMO_PROT_MSK | STA_FLG_MIMO_DIS_MSK);
195 switch (mimo_ps_mode) {
196 case WLAN_HT_CAP_SM_PS_STATIC:
197 sta_flags |= STA_FLG_MIMO_DIS_MSK;
199 case WLAN_HT_CAP_SM_PS_DYNAMIC:
200 sta_flags |= STA_FLG_RTS_MIMO_PROT_MSK;
202 case WLAN_HT_CAP_SM_PS_DISABLED:
205 IWL_WARN(priv, "Invalid MIMO PS mode %d\n", mimo_ps_mode);
209 sta_flags |= cpu_to_le32(
210 (u32)sta_ht_inf->ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS);
212 sta_flags |= cpu_to_le32(
213 (u32)sta_ht_inf->ampdu_density << STA_FLG_AGG_MPDU_DENSITY_POS);
215 if (iwl_is_ht40_tx_allowed(priv, sta_ht_inf))
216 sta_flags |= STA_FLG_HT40_EN_MSK;
218 sta_flags &= ~STA_FLG_HT40_EN_MSK;
220 priv->stations[index].sta.station_flags = sta_flags;
226 * iwl_add_station - Add station to tables in driver and device
228 u8 iwl_add_station(struct iwl_priv *priv, const u8 *addr, bool is_ap, u8 flags,
229 struct ieee80211_sta_ht_cap *ht_info)
231 struct iwl_station_entry *station;
232 unsigned long flags_spin;
234 int sta_id = IWL_INVALID_STATION;
237 spin_lock_irqsave(&priv->sta_lock, flags_spin);
240 else if (is_broadcast_ether_addr(addr))
241 sta_id = priv->hw_params.bcast_sta_id;
243 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++) {
244 if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
250 if (!priv->stations[i].used &&
251 sta_id == IWL_INVALID_STATION)
255 /* These two conditions have the same outcome, but keep them separate
256 since they have different meanings */
257 if (unlikely(sta_id == IWL_INVALID_STATION)) {
258 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
262 if (priv->stations[sta_id].used &&
263 !compare_ether_addr(priv->stations[sta_id].sta.sta.addr, addr)) {
264 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
269 station = &priv->stations[sta_id];
270 station->used = IWL_STA_DRIVER_ACTIVE;
271 IWL_DEBUG_ASSOC(priv, "Add STA to driver ID %d: %pM\n",
273 priv->num_stations++;
275 /* Set up the REPLY_ADD_STA command to send to device */
276 memset(&station->sta, 0, sizeof(struct iwl_addsta_cmd));
277 memcpy(station->sta.sta.addr, addr, ETH_ALEN);
278 station->sta.mode = 0;
279 station->sta.sta.sta_id = sta_id;
280 station->sta.station_flags = 0;
282 /* BCAST station and IBSS stations do not work in HT mode */
283 if (sta_id != priv->hw_params.bcast_sta_id &&
284 priv->iw_mode != NL80211_IFTYPE_ADHOC)
285 iwl_set_ht_add_station(priv, sta_id, ht_info);
288 rate = (priv->band == IEEE80211_BAND_5GHZ) ?
289 IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP;
290 /* Turn on both antennas for the station... */
291 station->sta.rate_n_flags = cpu_to_le16(rate | RATE_MCS_ANT_AB_MSK);
293 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
295 /* Add station to device's station table */
296 iwl_send_add_sta(priv, &station->sta, flags);
300 EXPORT_SYMBOL(iwl_add_station);
302 static void iwl_sta_ucode_deactivate(struct iwl_priv *priv, const char *addr)
305 u8 sta_id = iwl_find_station(priv, addr);
307 BUG_ON(sta_id == IWL_INVALID_STATION);
309 IWL_DEBUG_ASSOC(priv, "Removed STA from Ucode: %pM\n", addr);
311 spin_lock_irqsave(&priv->sta_lock, flags);
313 /* Ucode must be active and driver must be non active */
314 if (priv->stations[sta_id].used != IWL_STA_UCODE_ACTIVE)
315 IWL_ERR(priv, "removed non active STA %d\n", sta_id);
317 priv->stations[sta_id].used &= ~IWL_STA_UCODE_ACTIVE;
319 memset(&priv->stations[sta_id], 0, sizeof(struct iwl_station_entry));
320 spin_unlock_irqrestore(&priv->sta_lock, flags);
323 static void iwl_remove_sta_callback(struct iwl_priv *priv,
324 struct iwl_device_cmd *cmd,
325 struct iwl_rx_packet *pkt)
327 struct iwl_rem_sta_cmd *rm_sta =
328 (struct iwl_rem_sta_cmd *)cmd->cmd.payload;
329 const char *addr = rm_sta->addr;
331 if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
332 IWL_ERR(priv, "Bad return from REPLY_REMOVE_STA (0x%08X)\n",
337 switch (pkt->u.rem_sta.status) {
338 case REM_STA_SUCCESS_MSK:
339 iwl_sta_ucode_deactivate(priv, addr);
342 IWL_ERR(priv, "REPLY_REMOVE_STA failed\n");
347 static int iwl_send_remove_station(struct iwl_priv *priv, const u8 *addr,
350 struct iwl_rx_packet *pkt;
353 struct iwl_rem_sta_cmd rm_sta_cmd;
355 struct iwl_host_cmd cmd = {
356 .id = REPLY_REMOVE_STA,
357 .len = sizeof(struct iwl_rem_sta_cmd),
362 memset(&rm_sta_cmd, 0, sizeof(rm_sta_cmd));
363 rm_sta_cmd.num_sta = 1;
364 memcpy(&rm_sta_cmd.addr, addr , ETH_ALEN);
366 if (flags & CMD_ASYNC)
367 cmd.callback = iwl_remove_sta_callback;
369 cmd.flags |= CMD_WANT_SKB;
370 ret = iwl_send_cmd(priv, &cmd);
372 if (ret || (flags & CMD_ASYNC))
375 pkt = (struct iwl_rx_packet *)cmd.reply_page;
376 if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
377 IWL_ERR(priv, "Bad return from REPLY_REMOVE_STA (0x%08X)\n",
383 switch (pkt->u.rem_sta.status) {
384 case REM_STA_SUCCESS_MSK:
385 iwl_sta_ucode_deactivate(priv, addr);
386 IWL_DEBUG_ASSOC(priv, "REPLY_REMOVE_STA PASSED\n");
390 IWL_ERR(priv, "REPLY_REMOVE_STA failed\n");
395 priv->alloc_rxb_page--;
396 free_pages(cmd.reply_page, priv->hw_params.rx_page_order);
402 * iwl_remove_station - Remove driver's knowledge of station.
404 int iwl_remove_station(struct iwl_priv *priv, const u8 *addr, bool is_ap)
406 int sta_id = IWL_INVALID_STATION;
407 int i, ret = -EINVAL;
410 spin_lock_irqsave(&priv->sta_lock, flags);
414 else if (is_broadcast_ether_addr(addr))
415 sta_id = priv->hw_params.bcast_sta_id;
417 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++)
418 if (priv->stations[i].used &&
419 !compare_ether_addr(priv->stations[i].sta.sta.addr,
425 if (unlikely(sta_id == IWL_INVALID_STATION))
428 IWL_DEBUG_ASSOC(priv, "Removing STA from driver:%d %pM\n",
431 if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) {
432 IWL_ERR(priv, "Removing %pM but non DRIVER active\n",
437 if (!(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) {
438 IWL_ERR(priv, "Removing %pM but non UCODE active\n",
444 priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE;
446 priv->num_stations--;
448 BUG_ON(priv->num_stations < 0);
450 spin_unlock_irqrestore(&priv->sta_lock, flags);
452 ret = iwl_send_remove_station(priv, addr, CMD_ASYNC);
455 spin_unlock_irqrestore(&priv->sta_lock, flags);
460 * iwl_clear_stations_table - Clear the driver's station table
462 * NOTE: This does not clear or otherwise alter the device's station table.
464 void iwl_clear_stations_table(struct iwl_priv *priv)
469 spin_lock_irqsave(&priv->sta_lock, flags);
471 if (iwl_is_alive(priv) &&
472 !test_bit(STATUS_EXIT_PENDING, &priv->status) &&
473 iwl_send_cmd_pdu_async(priv, REPLY_REMOVE_ALL_STA, 0, NULL, NULL))
474 IWL_ERR(priv, "Couldn't clear the station table\n");
476 priv->num_stations = 0;
477 memset(priv->stations, 0, sizeof(priv->stations));
479 /* clean ucode key table bit map */
480 priv->ucode_key_table = 0;
482 /* keep track of static keys */
483 for (i = 0; i < WEP_KEYS_MAX ; i++) {
484 if (priv->wep_keys[i].key_size)
485 set_bit(i, &priv->ucode_key_table);
488 spin_unlock_irqrestore(&priv->sta_lock, flags);
490 EXPORT_SYMBOL(iwl_clear_stations_table);
492 int iwl_get_free_ucode_key_index(struct iwl_priv *priv)
496 for (i = 0; i < STA_KEY_MAX_NUM; i++)
497 if (!test_and_set_bit(i, &priv->ucode_key_table))
500 return WEP_INVALID_OFFSET;
502 EXPORT_SYMBOL(iwl_get_free_ucode_key_index);
504 int iwl_send_static_wepkey_cmd(struct iwl_priv *priv, u8 send_if_empty)
506 int i, not_empty = 0;
507 u8 buff[sizeof(struct iwl_wep_cmd) +
508 sizeof(struct iwl_wep_key) * WEP_KEYS_MAX];
509 struct iwl_wep_cmd *wep_cmd = (struct iwl_wep_cmd *)buff;
510 size_t cmd_size = sizeof(struct iwl_wep_cmd);
511 struct iwl_host_cmd cmd = {
517 memset(wep_cmd, 0, cmd_size +
518 (sizeof(struct iwl_wep_key) * WEP_KEYS_MAX));
520 for (i = 0; i < WEP_KEYS_MAX ; i++) {
521 wep_cmd->key[i].key_index = i;
522 if (priv->wep_keys[i].key_size) {
523 wep_cmd->key[i].key_offset = i;
526 wep_cmd->key[i].key_offset = WEP_INVALID_OFFSET;
529 wep_cmd->key[i].key_size = priv->wep_keys[i].key_size;
530 memcpy(&wep_cmd->key[i].key[3], priv->wep_keys[i].key,
531 priv->wep_keys[i].key_size);
534 wep_cmd->global_key_type = WEP_KEY_WEP_TYPE;
535 wep_cmd->num_keys = WEP_KEYS_MAX;
537 cmd_size += sizeof(struct iwl_wep_key) * WEP_KEYS_MAX;
541 if (not_empty || send_if_empty)
542 return iwl_send_cmd(priv, &cmd);
546 EXPORT_SYMBOL(iwl_send_static_wepkey_cmd);
548 int iwl_remove_default_wep_key(struct iwl_priv *priv,
549 struct ieee80211_key_conf *keyconf)
554 spin_lock_irqsave(&priv->sta_lock, flags);
555 IWL_DEBUG_WEP(priv, "Removing default WEP key: idx=%d\n",
558 if (!test_and_clear_bit(keyconf->keyidx, &priv->ucode_key_table))
559 IWL_ERR(priv, "index %d not used in uCode key table.\n",
562 priv->default_wep_key--;
563 memset(&priv->wep_keys[keyconf->keyidx], 0, sizeof(priv->wep_keys[0]));
564 if (iwl_is_rfkill(priv)) {
565 IWL_DEBUG_WEP(priv, "Not sending REPLY_WEPKEY command due to RFKILL.\n");
566 spin_unlock_irqrestore(&priv->sta_lock, flags);
569 ret = iwl_send_static_wepkey_cmd(priv, 1);
570 IWL_DEBUG_WEP(priv, "Remove default WEP key: idx=%d ret=%d\n",
571 keyconf->keyidx, ret);
572 spin_unlock_irqrestore(&priv->sta_lock, flags);
576 EXPORT_SYMBOL(iwl_remove_default_wep_key);
578 int iwl_set_default_wep_key(struct iwl_priv *priv,
579 struct ieee80211_key_conf *keyconf)
584 if (keyconf->keylen != WEP_KEY_LEN_128 &&
585 keyconf->keylen != WEP_KEY_LEN_64) {
586 IWL_DEBUG_WEP(priv, "Bad WEP key length %d\n", keyconf->keylen);
590 keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;
591 keyconf->hw_key_idx = HW_KEY_DEFAULT;
592 priv->stations[IWL_AP_ID].keyinfo.alg = ALG_WEP;
594 spin_lock_irqsave(&priv->sta_lock, flags);
595 priv->default_wep_key++;
597 if (test_and_set_bit(keyconf->keyidx, &priv->ucode_key_table))
598 IWL_ERR(priv, "index %d already used in uCode key table.\n",
601 priv->wep_keys[keyconf->keyidx].key_size = keyconf->keylen;
602 memcpy(&priv->wep_keys[keyconf->keyidx].key, &keyconf->key,
605 ret = iwl_send_static_wepkey_cmd(priv, 0);
606 IWL_DEBUG_WEP(priv, "Set default WEP key: len=%d idx=%d ret=%d\n",
607 keyconf->keylen, keyconf->keyidx, ret);
608 spin_unlock_irqrestore(&priv->sta_lock, flags);
612 EXPORT_SYMBOL(iwl_set_default_wep_key);
614 static int iwl_set_wep_dynamic_key_info(struct iwl_priv *priv,
615 struct ieee80211_key_conf *keyconf,
619 __le16 key_flags = 0;
622 keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;
624 key_flags |= (STA_KEY_FLG_WEP | STA_KEY_FLG_MAP_KEY_MSK);
625 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
626 key_flags &= ~STA_KEY_FLG_INVALID;
628 if (keyconf->keylen == WEP_KEY_LEN_128)
629 key_flags |= STA_KEY_FLG_KEY_SIZE_MSK;
631 if (sta_id == priv->hw_params.bcast_sta_id)
632 key_flags |= STA_KEY_MULTICAST_MSK;
634 spin_lock_irqsave(&priv->sta_lock, flags);
636 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
637 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
638 priv->stations[sta_id].keyinfo.keyidx = keyconf->keyidx;
640 memcpy(priv->stations[sta_id].keyinfo.key,
641 keyconf->key, keyconf->keylen);
643 memcpy(&priv->stations[sta_id].sta.key.key[3],
644 keyconf->key, keyconf->keylen);
646 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
647 == STA_KEY_FLG_NO_ENC)
648 priv->stations[sta_id].sta.key.key_offset =
649 iwl_get_free_ucode_key_index(priv);
650 /* else, we are overriding an existing key => no need to allocated room
653 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
654 "no space for a new key");
656 priv->stations[sta_id].sta.key.key_flags = key_flags;
657 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
658 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
660 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
662 spin_unlock_irqrestore(&priv->sta_lock, flags);
667 static int iwl_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
668 struct ieee80211_key_conf *keyconf,
672 __le16 key_flags = 0;
675 key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK);
676 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
677 key_flags &= ~STA_KEY_FLG_INVALID;
679 if (sta_id == priv->hw_params.bcast_sta_id)
680 key_flags |= STA_KEY_MULTICAST_MSK;
682 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
684 spin_lock_irqsave(&priv->sta_lock, flags);
685 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
686 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
688 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
691 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
694 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
695 == STA_KEY_FLG_NO_ENC)
696 priv->stations[sta_id].sta.key.key_offset =
697 iwl_get_free_ucode_key_index(priv);
698 /* else, we are overriding an existing key => no need to allocated room
701 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
702 "no space for a new key");
704 priv->stations[sta_id].sta.key.key_flags = key_flags;
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);
710 spin_unlock_irqrestore(&priv->sta_lock, flags);
715 static int iwl_set_tkip_dynamic_key_info(struct iwl_priv *priv,
716 struct ieee80211_key_conf *keyconf,
721 __le16 key_flags = 0;
723 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
724 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
725 key_flags &= ~STA_KEY_FLG_INVALID;
727 if (sta_id == priv->hw_params.bcast_sta_id)
728 key_flags |= STA_KEY_MULTICAST_MSK;
730 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
731 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
733 spin_lock_irqsave(&priv->sta_lock, flags);
735 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
736 priv->stations[sta_id].keyinfo.keylen = 16;
738 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
739 == STA_KEY_FLG_NO_ENC)
740 priv->stations[sta_id].sta.key.key_offset =
741 iwl_get_free_ucode_key_index(priv);
742 /* else, we are overriding an existing key => no need to allocated room
745 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
746 "no space for a new key");
748 priv->stations[sta_id].sta.key.key_flags = key_flags;
751 /* This copy is acutally not needed: we get the key with each TX */
752 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key, 16);
754 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key, 16);
756 spin_unlock_irqrestore(&priv->sta_lock, flags);
761 void iwl_update_tkip_key(struct iwl_priv *priv,
762 struct ieee80211_key_conf *keyconf,
763 const u8 *addr, u32 iv32, u16 *phase1key)
765 u8 sta_id = IWL_INVALID_STATION;
769 sta_id = iwl_find_station(priv, addr);
770 if (sta_id == IWL_INVALID_STATION) {
771 IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n",
776 if (iwl_scan_cancel(priv)) {
777 /* cancel scan failed, just live w/ bad key and rely
778 briefly on SW decryption */
782 spin_lock_irqsave(&priv->sta_lock, flags);
784 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
786 for (i = 0; i < 5; i++)
787 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
788 cpu_to_le16(phase1key[i]);
790 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
791 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
793 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
795 spin_unlock_irqrestore(&priv->sta_lock, flags);
798 EXPORT_SYMBOL(iwl_update_tkip_key);
800 int iwl_remove_dynamic_key(struct iwl_priv *priv,
801 struct ieee80211_key_conf *keyconf,
809 priv->key_mapping_key--;
811 spin_lock_irqsave(&priv->sta_lock, flags);
812 key_flags = le16_to_cpu(priv->stations[sta_id].sta.key.key_flags);
813 keyidx = (key_flags >> STA_KEY_FLG_KEYID_POS) & 0x3;
815 IWL_DEBUG_WEP(priv, "Remove dynamic key: idx=%d sta=%d\n",
816 keyconf->keyidx, sta_id);
818 if (keyconf->keyidx != keyidx) {
819 /* We need to remove a key with index different that the one
820 * in the uCode. This means that the key we need to remove has
821 * been replaced by another one with different index.
822 * Don't do anything and return ok
824 spin_unlock_irqrestore(&priv->sta_lock, flags);
828 if (priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET) {
829 IWL_WARN(priv, "Removing wrong key %d 0x%x\n",
830 keyconf->keyidx, key_flags);
831 spin_unlock_irqrestore(&priv->sta_lock, flags);
835 if (!test_and_clear_bit(priv->stations[sta_id].sta.key.key_offset,
836 &priv->ucode_key_table))
837 IWL_ERR(priv, "index %d not used in uCode key table.\n",
838 priv->stations[sta_id].sta.key.key_offset);
839 memset(&priv->stations[sta_id].keyinfo, 0,
840 sizeof(struct iwl_hw_key));
841 memset(&priv->stations[sta_id].sta.key, 0,
842 sizeof(struct iwl4965_keyinfo));
843 priv->stations[sta_id].sta.key.key_flags =
844 STA_KEY_FLG_NO_ENC | STA_KEY_FLG_INVALID;
845 priv->stations[sta_id].sta.key.key_offset = WEP_INVALID_OFFSET;
846 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
847 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
849 if (iwl_is_rfkill(priv)) {
850 IWL_DEBUG_WEP(priv, "Not sending REPLY_ADD_STA command because RFKILL enabled. \n");
851 spin_unlock_irqrestore(&priv->sta_lock, flags);
854 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
855 spin_unlock_irqrestore(&priv->sta_lock, flags);
858 EXPORT_SYMBOL(iwl_remove_dynamic_key);
860 int iwl_set_dynamic_key(struct iwl_priv *priv,
861 struct ieee80211_key_conf *keyconf, u8 sta_id)
865 priv->key_mapping_key++;
866 keyconf->hw_key_idx = HW_KEY_DYNAMIC;
868 switch (keyconf->alg) {
870 ret = iwl_set_ccmp_dynamic_key_info(priv, keyconf, sta_id);
873 ret = iwl_set_tkip_dynamic_key_info(priv, keyconf, sta_id);
876 ret = iwl_set_wep_dynamic_key_info(priv, keyconf, sta_id);
880 "Unknown alg: %s alg = %d\n", __func__, keyconf->alg);
884 IWL_DEBUG_WEP(priv, "Set dynamic key: alg= %d len=%d idx=%d sta=%d ret=%d\n",
885 keyconf->alg, keyconf->keylen, keyconf->keyidx,
890 EXPORT_SYMBOL(iwl_set_dynamic_key);
892 #ifdef CONFIG_IWLWIFI_DEBUG
893 static void iwl_dump_lq_cmd(struct iwl_priv *priv,
894 struct iwl_link_quality_cmd *lq)
897 IWL_DEBUG_RATE(priv, "lq station id 0x%x\n", lq->sta_id);
898 IWL_DEBUG_RATE(priv, "lq ant 0x%X 0x%X\n",
899 lq->general_params.single_stream_ant_msk,
900 lq->general_params.dual_stream_ant_msk);
902 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++)
903 IWL_DEBUG_RATE(priv, "lq index %d 0x%X\n",
904 i, lq->rs_table[i].rate_n_flags);
907 static inline void iwl_dump_lq_cmd(struct iwl_priv *priv,
908 struct iwl_link_quality_cmd *lq)
913 int iwl_send_lq_cmd(struct iwl_priv *priv,
914 struct iwl_link_quality_cmd *lq, u8 flags)
916 struct iwl_host_cmd cmd = {
917 .id = REPLY_TX_LINK_QUALITY_CMD,
918 .len = sizeof(struct iwl_link_quality_cmd),
923 if ((lq->sta_id == 0xFF) &&
924 (priv->iw_mode == NL80211_IFTYPE_ADHOC))
927 if (lq->sta_id == 0xFF)
928 lq->sta_id = IWL_AP_ID;
930 iwl_dump_lq_cmd(priv, lq);
932 if (iwl_is_associated(priv) && priv->assoc_station_added)
933 return iwl_send_cmd(priv, &cmd);
937 EXPORT_SYMBOL(iwl_send_lq_cmd);
940 * iwl_sta_init_lq - Initialize a station's hardware rate table
942 * The uCode's station table contains a table of fallback rates
943 * for automatic fallback during transmission.
945 * NOTE: This sets up a default set of values. These will be replaced later
946 * if the driver's iwl-agn-rs rate scaling algorithm is used, instead of
949 * NOTE: Run REPLY_ADD_STA command to set up station table entry, before
950 * calling this function (which runs REPLY_TX_LINK_QUALITY_CMD,
951 * which requires station table entry to exist).
953 static void iwl_sta_init_lq(struct iwl_priv *priv, const u8 *addr, bool is_ap)
956 struct iwl_link_quality_cmd link_cmd = {
961 /* Set up the rate scaling to start at selected rate, fall back
962 * all the way down to 1M in IEEE order, and then spin on 1M */
964 r = IWL_RATE_54M_INDEX;
965 else if (priv->band == IEEE80211_BAND_5GHZ)
966 r = IWL_RATE_6M_INDEX;
968 r = IWL_RATE_1M_INDEX;
970 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) {
972 if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE)
973 rate_flags |= RATE_MCS_CCK_MSK;
975 rate_flags |= first_antenna(priv->hw_params.valid_tx_ant) <<
978 link_cmd.rs_table[i].rate_n_flags =
979 iwl_hw_set_rate_n_flags(iwl_rates[r].plcp, rate_flags);
980 r = iwl_get_prev_ieee_rate(r);
983 link_cmd.general_params.single_stream_ant_msk =
984 first_antenna(priv->hw_params.valid_tx_ant);
985 link_cmd.general_params.dual_stream_ant_msk = 3;
986 link_cmd.agg_params.agg_dis_start_th = LINK_QUAL_AGG_DISABLE_START_DEF;
987 link_cmd.agg_params.agg_time_limit =
988 cpu_to_le16(LINK_QUAL_AGG_TIME_LIMIT_DEF);
990 /* Update the rate scaling for control frame Tx to AP */
991 link_cmd.sta_id = is_ap ? IWL_AP_ID : priv->hw_params.bcast_sta_id;
993 iwl_send_cmd_pdu_async(priv, REPLY_TX_LINK_QUALITY_CMD,
994 sizeof(link_cmd), &link_cmd, NULL);
998 * iwl_rxon_add_station - add station into station table.
1000 * there is only one AP station with id= IWL_AP_ID
1001 * NOTE: mutex must be held before calling this function
1003 int iwl_rxon_add_station(struct iwl_priv *priv, const u8 *addr, bool is_ap)
1005 struct ieee80211_sta *sta;
1006 struct ieee80211_sta_ht_cap ht_config;
1007 struct ieee80211_sta_ht_cap *cur_ht_config = NULL;
1010 /* Add station to device's station table */
1013 * XXX: This check is definitely not correct, if we're an AP
1014 * it'll always be false which is not what we want, but
1015 * it doesn't look like iwlagn is prepared to be an HT
1018 if (priv->current_ht_config.is_ht) {
1020 sta = ieee80211_find_sta(priv->vif, addr);
1022 memcpy(&ht_config, &sta->ht_cap, sizeof(ht_config));
1023 cur_ht_config = &ht_config;
1028 sta_id = iwl_add_station(priv, addr, is_ap, CMD_SYNC, cur_ht_config);
1030 /* Set up default rate scaling table in device's station table */
1031 iwl_sta_init_lq(priv, addr, is_ap);
1035 EXPORT_SYMBOL(iwl_rxon_add_station);
1038 * iwl_sta_init_bcast_lq - Initialize a bcast station's hardware rate table
1040 * NOTE: Run REPLY_ADD_STA command to set up station table entry, before
1041 * calling this function (which runs REPLY_TX_LINK_QUALITY_CMD,
1042 * which requires station table entry to exist).
1044 static void iwl_sta_init_bcast_lq(struct iwl_priv *priv)
1047 struct iwl_link_quality_cmd link_cmd = {
1052 /* Set up the rate scaling to start at selected rate, fall back
1053 * all the way down to 1M in IEEE order, and then spin on 1M */
1054 if (priv->band == IEEE80211_BAND_5GHZ)
1055 r = IWL_RATE_6M_INDEX;
1057 r = IWL_RATE_1M_INDEX;
1059 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) {
1061 if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE)
1062 rate_flags |= RATE_MCS_CCK_MSK;
1064 rate_flags |= first_antenna(priv->hw_params.valid_tx_ant) <<
1067 link_cmd.rs_table[i].rate_n_flags =
1068 iwl_hw_set_rate_n_flags(iwl_rates[r].plcp, rate_flags);
1069 r = iwl_get_prev_ieee_rate(r);
1072 link_cmd.general_params.single_stream_ant_msk =
1073 first_antenna(priv->hw_params.valid_tx_ant);
1074 link_cmd.general_params.dual_stream_ant_msk = 3;
1075 link_cmd.agg_params.agg_dis_start_th = LINK_QUAL_AGG_DISABLE_START_DEF;
1076 link_cmd.agg_params.agg_time_limit =
1077 cpu_to_le16(LINK_QUAL_AGG_TIME_LIMIT_DEF);
1079 /* Update the rate scaling for control frame Tx to AP */
1080 link_cmd.sta_id = priv->hw_params.bcast_sta_id;
1082 iwl_send_cmd_pdu_async(priv, REPLY_TX_LINK_QUALITY_CMD,
1083 sizeof(link_cmd), &link_cmd, NULL);
1088 * iwl_add_bcast_station - add broadcast station into station table.
1090 void iwl_add_bcast_station(struct iwl_priv *priv)
1092 iwl_add_station(priv, iwl_bcast_addr, false, CMD_SYNC, NULL);
1094 /* Set up default rate scaling table in device's station table */
1095 iwl_sta_init_bcast_lq(priv);
1097 EXPORT_SYMBOL(iwl_add_bcast_station);
1100 * iwl_get_sta_id - Find station's index within station table
1102 * If new IBSS station, create new entry in station table
1104 int iwl_get_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
1107 __le16 fc = hdr->frame_control;
1109 /* If this frame is broadcast or management, use broadcast station id */
1110 if (!ieee80211_is_data(fc) || is_multicast_ether_addr(hdr->addr1))
1111 return priv->hw_params.bcast_sta_id;
1113 switch (priv->iw_mode) {
1115 /* If we are a client station in a BSS network, use the special
1116 * AP station entry (that's the only station we communicate with) */
1117 case NL80211_IFTYPE_STATION:
1120 /* If we are an AP, then find the station, or use BCAST */
1121 case NL80211_IFTYPE_AP:
1122 sta_id = iwl_find_station(priv, hdr->addr1);
1123 if (sta_id != IWL_INVALID_STATION)
1125 return priv->hw_params.bcast_sta_id;
1127 /* If this frame is going out to an IBSS network, find the station,
1128 * or create a new station table entry */
1129 case NL80211_IFTYPE_ADHOC:
1130 sta_id = iwl_find_station(priv, hdr->addr1);
1131 if (sta_id != IWL_INVALID_STATION)
1134 /* Create new station table entry */
1135 sta_id = iwl_add_station(priv, hdr->addr1, false,
1138 if (sta_id != IWL_INVALID_STATION)
1141 IWL_DEBUG_DROP(priv, "Station %pM not in station map. "
1142 "Defaulting to broadcast...\n",
1144 iwl_print_hex_dump(priv, IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
1145 return priv->hw_params.bcast_sta_id;
1148 IWL_WARN(priv, "Unknown mode of operation: %d\n",
1150 return priv->hw_params.bcast_sta_id;
1153 EXPORT_SYMBOL(iwl_get_sta_id);
1156 * iwl_sta_tx_modify_enable_tid - Enable Tx for this TID in station table
1158 void iwl_sta_tx_modify_enable_tid(struct iwl_priv *priv, int sta_id, int tid)
1160 unsigned long flags;
1162 /* Remove "disable" flag, to enable Tx for this TID */
1163 spin_lock_irqsave(&priv->sta_lock, flags);
1164 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_TID_DISABLE_TX;
1165 priv->stations[sta_id].sta.tid_disable_tx &= cpu_to_le16(~(1 << tid));
1166 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1167 spin_unlock_irqrestore(&priv->sta_lock, flags);
1169 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
1171 EXPORT_SYMBOL(iwl_sta_tx_modify_enable_tid);
1173 int iwl_sta_rx_agg_start(struct iwl_priv *priv,
1174 const u8 *addr, int tid, u16 ssn)
1176 unsigned long flags;
1179 sta_id = iwl_find_station(priv, addr);
1180 if (sta_id == IWL_INVALID_STATION)
1183 spin_lock_irqsave(&priv->sta_lock, flags);
1184 priv->stations[sta_id].sta.station_flags_msk = 0;
1185 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_ADDBA_TID_MSK;
1186 priv->stations[sta_id].sta.add_immediate_ba_tid = (u8)tid;
1187 priv->stations[sta_id].sta.add_immediate_ba_ssn = cpu_to_le16(ssn);
1188 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1189 spin_unlock_irqrestore(&priv->sta_lock, flags);
1191 return iwl_send_add_sta(priv, &priv->stations[sta_id].sta,
1194 EXPORT_SYMBOL(iwl_sta_rx_agg_start);
1196 int iwl_sta_rx_agg_stop(struct iwl_priv *priv, const u8 *addr, int tid)
1198 unsigned long flags;
1201 sta_id = iwl_find_station(priv, addr);
1202 if (sta_id == IWL_INVALID_STATION) {
1203 IWL_ERR(priv, "Invalid station for AGG tid %d\n", tid);
1207 spin_lock_irqsave(&priv->sta_lock, flags);
1208 priv->stations[sta_id].sta.station_flags_msk = 0;
1209 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_DELBA_TID_MSK;
1210 priv->stations[sta_id].sta.remove_immediate_ba_tid = (u8)tid;
1211 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1212 spin_unlock_irqrestore(&priv->sta_lock, flags);
1214 return iwl_send_add_sta(priv, &priv->stations[sta_id].sta,
1217 EXPORT_SYMBOL(iwl_sta_rx_agg_stop);
1219 void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id)
1221 unsigned long flags;
1223 spin_lock_irqsave(&priv->sta_lock, flags);
1224 priv->stations[sta_id].sta.station_flags &= ~STA_FLG_PWR_SAVE_MSK;
1225 priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK;
1226 priv->stations[sta_id].sta.sta.modify_mask = 0;
1227 priv->stations[sta_id].sta.sleep_tx_count = 0;
1228 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1229 spin_unlock_irqrestore(&priv->sta_lock, flags);
1231 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
1233 EXPORT_SYMBOL(iwl_sta_modify_ps_wake);
1235 void iwl_sta_modify_sleep_tx_count(struct iwl_priv *priv, int sta_id, int cnt)
1237 unsigned long flags;
1239 spin_lock_irqsave(&priv->sta_lock, flags);
1240 priv->stations[sta_id].sta.station_flags |= STA_FLG_PWR_SAVE_MSK;
1241 priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK;
1242 priv->stations[sta_id].sta.sta.modify_mask =
1243 STA_MODIFY_SLEEP_TX_COUNT_MSK;
1244 priv->stations[sta_id].sta.sleep_tx_count = cpu_to_le16(cnt);
1245 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1246 spin_unlock_irqrestore(&priv->sta_lock, flags);
1248 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);