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");
167 iwl_free_pages(priv, cmd.reply_page);
171 EXPORT_SYMBOL(iwl_send_add_sta);
173 static void iwl_set_ht_add_station(struct iwl_priv *priv, u8 index,
174 struct ieee80211_sta_ht_cap *sta_ht_inf)
179 if (!sta_ht_inf || !sta_ht_inf->ht_supported)
182 mimo_ps_mode = (sta_ht_inf->cap & IEEE80211_HT_CAP_SM_PS) >> 2;
183 IWL_DEBUG_ASSOC(priv, "spatial multiplexing power save mode: %s\n",
184 (mimo_ps_mode == WLAN_HT_CAP_SM_PS_STATIC) ?
186 (mimo_ps_mode == WLAN_HT_CAP_SM_PS_DYNAMIC) ?
187 "dynamic" : "disabled");
189 sta_flags = priv->stations[index].sta.station_flags;
191 sta_flags &= ~(STA_FLG_RTS_MIMO_PROT_MSK | STA_FLG_MIMO_DIS_MSK);
193 switch (mimo_ps_mode) {
194 case WLAN_HT_CAP_SM_PS_STATIC:
195 sta_flags |= STA_FLG_MIMO_DIS_MSK;
197 case WLAN_HT_CAP_SM_PS_DYNAMIC:
198 sta_flags |= STA_FLG_RTS_MIMO_PROT_MSK;
200 case WLAN_HT_CAP_SM_PS_DISABLED:
203 IWL_WARN(priv, "Invalid MIMO PS mode %d\n", mimo_ps_mode);
207 sta_flags |= cpu_to_le32(
208 (u32)sta_ht_inf->ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS);
210 sta_flags |= cpu_to_le32(
211 (u32)sta_ht_inf->ampdu_density << STA_FLG_AGG_MPDU_DENSITY_POS);
213 if (iwl_is_ht40_tx_allowed(priv, sta_ht_inf))
214 sta_flags |= STA_FLG_HT40_EN_MSK;
216 sta_flags &= ~STA_FLG_HT40_EN_MSK;
218 priv->stations[index].sta.station_flags = sta_flags;
224 * iwl_add_station - Add station to tables in driver and device
226 u8 iwl_add_station(struct iwl_priv *priv, const u8 *addr, bool is_ap, u8 flags,
227 struct ieee80211_sta_ht_cap *ht_info)
229 struct iwl_station_entry *station;
230 unsigned long flags_spin;
232 int sta_id = IWL_INVALID_STATION;
235 spin_lock_irqsave(&priv->sta_lock, flags_spin);
238 else if (is_broadcast_ether_addr(addr))
239 sta_id = priv->hw_params.bcast_sta_id;
241 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++) {
242 if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
248 if (!priv->stations[i].used &&
249 sta_id == IWL_INVALID_STATION)
253 /* These two conditions have the same outcome, but keep them separate
254 since they have different meanings */
255 if (unlikely(sta_id == IWL_INVALID_STATION)) {
256 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
260 if (priv->stations[sta_id].used &&
261 !compare_ether_addr(priv->stations[sta_id].sta.sta.addr, addr)) {
262 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
267 station = &priv->stations[sta_id];
268 station->used = IWL_STA_DRIVER_ACTIVE;
269 IWL_DEBUG_ASSOC(priv, "Add STA to driver ID %d: %pM\n",
271 priv->num_stations++;
273 /* Set up the REPLY_ADD_STA command to send to device */
274 memset(&station->sta, 0, sizeof(struct iwl_addsta_cmd));
275 memcpy(station->sta.sta.addr, addr, ETH_ALEN);
276 station->sta.mode = 0;
277 station->sta.sta.sta_id = sta_id;
278 station->sta.station_flags = 0;
280 /* BCAST station and IBSS stations do not work in HT mode */
281 if (sta_id != priv->hw_params.bcast_sta_id &&
282 priv->iw_mode != NL80211_IFTYPE_ADHOC)
283 iwl_set_ht_add_station(priv, sta_id, ht_info);
286 rate = (priv->band == IEEE80211_BAND_5GHZ) ?
287 IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP;
288 /* Turn on both antennas for the station... */
289 station->sta.rate_n_flags = cpu_to_le16(rate | RATE_MCS_ANT_AB_MSK);
291 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
293 /* Add station to device's station table */
294 iwl_send_add_sta(priv, &station->sta, flags);
298 EXPORT_SYMBOL(iwl_add_station);
300 static void iwl_sta_ucode_deactivate(struct iwl_priv *priv, const u8 *addr)
303 u8 sta_id = iwl_find_station(priv, addr);
305 BUG_ON(sta_id == IWL_INVALID_STATION);
307 IWL_DEBUG_ASSOC(priv, "Removed STA from Ucode: %pM\n", addr);
309 spin_lock_irqsave(&priv->sta_lock, flags);
311 /* Ucode must be active and driver must be non active */
312 if (priv->stations[sta_id].used != IWL_STA_UCODE_ACTIVE)
313 IWL_ERR(priv, "removed non active STA %d\n", sta_id);
315 priv->stations[sta_id].used &= ~IWL_STA_UCODE_ACTIVE;
317 memset(&priv->stations[sta_id], 0, sizeof(struct iwl_station_entry));
318 spin_unlock_irqrestore(&priv->sta_lock, flags);
321 static void iwl_remove_sta_callback(struct iwl_priv *priv,
322 struct iwl_device_cmd *cmd,
323 struct iwl_rx_packet *pkt)
325 struct iwl_rem_sta_cmd *rm_sta =
326 (struct iwl_rem_sta_cmd *)cmd->cmd.payload;
327 const u8 *addr = rm_sta->addr;
329 if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
330 IWL_ERR(priv, "Bad return from REPLY_REMOVE_STA (0x%08X)\n",
335 switch (pkt->u.rem_sta.status) {
336 case REM_STA_SUCCESS_MSK:
337 iwl_sta_ucode_deactivate(priv, addr);
340 IWL_ERR(priv, "REPLY_REMOVE_STA failed\n");
345 static int iwl_send_remove_station(struct iwl_priv *priv, const u8 *addr,
348 struct iwl_rx_packet *pkt;
351 struct iwl_rem_sta_cmd rm_sta_cmd;
353 struct iwl_host_cmd cmd = {
354 .id = REPLY_REMOVE_STA,
355 .len = sizeof(struct iwl_rem_sta_cmd),
360 memset(&rm_sta_cmd, 0, sizeof(rm_sta_cmd));
361 rm_sta_cmd.num_sta = 1;
362 memcpy(&rm_sta_cmd.addr, addr , ETH_ALEN);
364 if (flags & CMD_ASYNC)
365 cmd.callback = iwl_remove_sta_callback;
367 cmd.flags |= CMD_WANT_SKB;
368 ret = iwl_send_cmd(priv, &cmd);
370 if (ret || (flags & CMD_ASYNC))
373 pkt = (struct iwl_rx_packet *)cmd.reply_page;
374 if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
375 IWL_ERR(priv, "Bad return from REPLY_REMOVE_STA (0x%08X)\n",
381 switch (pkt->u.rem_sta.status) {
382 case REM_STA_SUCCESS_MSK:
383 iwl_sta_ucode_deactivate(priv, addr);
384 IWL_DEBUG_ASSOC(priv, "REPLY_REMOVE_STA PASSED\n");
388 IWL_ERR(priv, "REPLY_REMOVE_STA failed\n");
392 iwl_free_pages(priv, cmd.reply_page);
398 * iwl_remove_station - Remove driver's knowledge of station.
400 int iwl_remove_station(struct iwl_priv *priv, const u8 *addr, bool is_ap)
402 int sta_id = IWL_INVALID_STATION;
403 int i, ret = -EINVAL;
406 spin_lock_irqsave(&priv->sta_lock, flags);
410 else if (is_broadcast_ether_addr(addr))
411 sta_id = priv->hw_params.bcast_sta_id;
413 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++)
414 if (priv->stations[i].used &&
415 !compare_ether_addr(priv->stations[i].sta.sta.addr,
421 if (unlikely(sta_id == IWL_INVALID_STATION))
424 IWL_DEBUG_ASSOC(priv, "Removing STA from driver:%d %pM\n",
427 if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) {
428 IWL_ERR(priv, "Removing %pM but non DRIVER active\n",
433 if (!(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) {
434 IWL_ERR(priv, "Removing %pM but non UCODE active\n",
440 priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE;
442 priv->num_stations--;
444 BUG_ON(priv->num_stations < 0);
446 spin_unlock_irqrestore(&priv->sta_lock, flags);
448 ret = iwl_send_remove_station(priv, addr, CMD_ASYNC);
451 spin_unlock_irqrestore(&priv->sta_lock, flags);
456 * iwl_clear_stations_table - Clear the driver's station table
458 * NOTE: This does not clear or otherwise alter the device's station table.
460 void iwl_clear_stations_table(struct iwl_priv *priv)
465 spin_lock_irqsave(&priv->sta_lock, flags);
467 if (iwl_is_alive(priv) &&
468 !test_bit(STATUS_EXIT_PENDING, &priv->status) &&
469 iwl_send_cmd_pdu_async(priv, REPLY_REMOVE_ALL_STA, 0, NULL, NULL))
470 IWL_ERR(priv, "Couldn't clear the station table\n");
472 priv->num_stations = 0;
473 memset(priv->stations, 0, sizeof(priv->stations));
475 /* clean ucode key table bit map */
476 priv->ucode_key_table = 0;
478 /* keep track of static keys */
479 for (i = 0; i < WEP_KEYS_MAX ; i++) {
480 if (priv->wep_keys[i].key_size)
481 set_bit(i, &priv->ucode_key_table);
484 spin_unlock_irqrestore(&priv->sta_lock, flags);
486 EXPORT_SYMBOL(iwl_clear_stations_table);
488 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;
498 EXPORT_SYMBOL(iwl_get_free_ucode_key_index);
500 int iwl_send_static_wepkey_cmd(struct iwl_priv *priv, u8 send_if_empty)
502 int i, not_empty = 0;
503 u8 buff[sizeof(struct iwl_wep_cmd) +
504 sizeof(struct iwl_wep_key) * WEP_KEYS_MAX];
505 struct iwl_wep_cmd *wep_cmd = (struct iwl_wep_cmd *)buff;
506 size_t cmd_size = sizeof(struct iwl_wep_cmd);
507 struct iwl_host_cmd cmd = {
513 memset(wep_cmd, 0, cmd_size +
514 (sizeof(struct iwl_wep_key) * WEP_KEYS_MAX));
516 for (i = 0; i < WEP_KEYS_MAX ; i++) {
517 wep_cmd->key[i].key_index = i;
518 if (priv->wep_keys[i].key_size) {
519 wep_cmd->key[i].key_offset = i;
522 wep_cmd->key[i].key_offset = WEP_INVALID_OFFSET;
525 wep_cmd->key[i].key_size = priv->wep_keys[i].key_size;
526 memcpy(&wep_cmd->key[i].key[3], priv->wep_keys[i].key,
527 priv->wep_keys[i].key_size);
530 wep_cmd->global_key_type = WEP_KEY_WEP_TYPE;
531 wep_cmd->num_keys = WEP_KEYS_MAX;
533 cmd_size += sizeof(struct iwl_wep_key) * WEP_KEYS_MAX;
537 if (not_empty || send_if_empty)
538 return iwl_send_cmd(priv, &cmd);
542 EXPORT_SYMBOL(iwl_send_static_wepkey_cmd);
544 int iwl_remove_default_wep_key(struct iwl_priv *priv,
545 struct ieee80211_key_conf *keyconf)
550 spin_lock_irqsave(&priv->sta_lock, flags);
551 IWL_DEBUG_WEP(priv, "Removing default WEP key: idx=%d\n",
554 if (!test_and_clear_bit(keyconf->keyidx, &priv->ucode_key_table))
555 IWL_ERR(priv, "index %d not used in uCode key table.\n",
558 priv->default_wep_key--;
559 memset(&priv->wep_keys[keyconf->keyidx], 0, sizeof(priv->wep_keys[0]));
560 if (iwl_is_rfkill(priv)) {
561 IWL_DEBUG_WEP(priv, "Not sending REPLY_WEPKEY command due to RFKILL.\n");
562 spin_unlock_irqrestore(&priv->sta_lock, flags);
565 ret = iwl_send_static_wepkey_cmd(priv, 1);
566 IWL_DEBUG_WEP(priv, "Remove default WEP key: idx=%d ret=%d\n",
567 keyconf->keyidx, ret);
568 spin_unlock_irqrestore(&priv->sta_lock, flags);
572 EXPORT_SYMBOL(iwl_remove_default_wep_key);
574 int iwl_set_default_wep_key(struct iwl_priv *priv,
575 struct ieee80211_key_conf *keyconf)
580 if (keyconf->keylen != WEP_KEY_LEN_128 &&
581 keyconf->keylen != WEP_KEY_LEN_64) {
582 IWL_DEBUG_WEP(priv, "Bad WEP key length %d\n", keyconf->keylen);
586 keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;
587 keyconf->hw_key_idx = HW_KEY_DEFAULT;
588 priv->stations[IWL_AP_ID].keyinfo.alg = ALG_WEP;
590 spin_lock_irqsave(&priv->sta_lock, flags);
591 priv->default_wep_key++;
593 if (test_and_set_bit(keyconf->keyidx, &priv->ucode_key_table))
594 IWL_ERR(priv, "index %d already used in uCode key table.\n",
597 priv->wep_keys[keyconf->keyidx].key_size = keyconf->keylen;
598 memcpy(&priv->wep_keys[keyconf->keyidx].key, &keyconf->key,
601 ret = iwl_send_static_wepkey_cmd(priv, 0);
602 IWL_DEBUG_WEP(priv, "Set default WEP key: len=%d idx=%d ret=%d\n",
603 keyconf->keylen, keyconf->keyidx, ret);
604 spin_unlock_irqrestore(&priv->sta_lock, flags);
608 EXPORT_SYMBOL(iwl_set_default_wep_key);
610 static int iwl_set_wep_dynamic_key_info(struct iwl_priv *priv,
611 struct ieee80211_key_conf *keyconf,
615 __le16 key_flags = 0;
618 keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;
620 key_flags |= (STA_KEY_FLG_WEP | STA_KEY_FLG_MAP_KEY_MSK);
621 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
622 key_flags &= ~STA_KEY_FLG_INVALID;
624 if (keyconf->keylen == WEP_KEY_LEN_128)
625 key_flags |= STA_KEY_FLG_KEY_SIZE_MSK;
627 if (sta_id == priv->hw_params.bcast_sta_id)
628 key_flags |= STA_KEY_MULTICAST_MSK;
630 spin_lock_irqsave(&priv->sta_lock, flags);
632 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
633 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
634 priv->stations[sta_id].keyinfo.keyidx = keyconf->keyidx;
636 memcpy(priv->stations[sta_id].keyinfo.key,
637 keyconf->key, keyconf->keylen);
639 memcpy(&priv->stations[sta_id].sta.key.key[3],
640 keyconf->key, keyconf->keylen);
642 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
643 == STA_KEY_FLG_NO_ENC)
644 priv->stations[sta_id].sta.key.key_offset =
645 iwl_get_free_ucode_key_index(priv);
646 /* else, we are overriding an existing key => no need to allocated room
649 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
650 "no space for a new key");
652 priv->stations[sta_id].sta.key.key_flags = key_flags;
653 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
654 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
656 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
658 spin_unlock_irqrestore(&priv->sta_lock, flags);
663 static int iwl_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
664 struct ieee80211_key_conf *keyconf,
668 __le16 key_flags = 0;
671 key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK);
672 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
673 key_flags &= ~STA_KEY_FLG_INVALID;
675 if (sta_id == priv->hw_params.bcast_sta_id)
676 key_flags |= STA_KEY_MULTICAST_MSK;
678 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
680 spin_lock_irqsave(&priv->sta_lock, flags);
681 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
682 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
684 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
687 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
690 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
691 == STA_KEY_FLG_NO_ENC)
692 priv->stations[sta_id].sta.key.key_offset =
693 iwl_get_free_ucode_key_index(priv);
694 /* else, we are overriding an existing key => no need to allocated room
697 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
698 "no space for a new key");
700 priv->stations[sta_id].sta.key.key_flags = key_flags;
701 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
702 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
704 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
706 spin_unlock_irqrestore(&priv->sta_lock, flags);
711 static int iwl_set_tkip_dynamic_key_info(struct iwl_priv *priv,
712 struct ieee80211_key_conf *keyconf,
717 __le16 key_flags = 0;
719 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
720 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
721 key_flags &= ~STA_KEY_FLG_INVALID;
723 if (sta_id == priv->hw_params.bcast_sta_id)
724 key_flags |= STA_KEY_MULTICAST_MSK;
726 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
727 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
729 spin_lock_irqsave(&priv->sta_lock, flags);
731 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
732 priv->stations[sta_id].keyinfo.keylen = 16;
734 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
735 == STA_KEY_FLG_NO_ENC)
736 priv->stations[sta_id].sta.key.key_offset =
737 iwl_get_free_ucode_key_index(priv);
738 /* else, we are overriding an existing key => no need to allocated room
741 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
742 "no space for a new key");
744 priv->stations[sta_id].sta.key.key_flags = key_flags;
747 /* This copy is acutally not needed: we get the key with each TX */
748 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key, 16);
750 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key, 16);
752 spin_unlock_irqrestore(&priv->sta_lock, flags);
757 void iwl_update_tkip_key(struct iwl_priv *priv,
758 struct ieee80211_key_conf *keyconf,
759 const u8 *addr, u32 iv32, u16 *phase1key)
761 u8 sta_id = IWL_INVALID_STATION;
765 sta_id = iwl_find_station(priv, addr);
766 if (sta_id == IWL_INVALID_STATION) {
767 IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n",
772 if (iwl_scan_cancel(priv)) {
773 /* cancel scan failed, just live w/ bad key and rely
774 briefly on SW decryption */
778 spin_lock_irqsave(&priv->sta_lock, flags);
780 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
782 for (i = 0; i < 5; i++)
783 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
784 cpu_to_le16(phase1key[i]);
786 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
787 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
789 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
791 spin_unlock_irqrestore(&priv->sta_lock, flags);
794 EXPORT_SYMBOL(iwl_update_tkip_key);
796 int iwl_remove_dynamic_key(struct iwl_priv *priv,
797 struct ieee80211_key_conf *keyconf,
805 priv->key_mapping_key--;
807 spin_lock_irqsave(&priv->sta_lock, flags);
808 key_flags = le16_to_cpu(priv->stations[sta_id].sta.key.key_flags);
809 keyidx = (key_flags >> STA_KEY_FLG_KEYID_POS) & 0x3;
811 IWL_DEBUG_WEP(priv, "Remove dynamic key: idx=%d sta=%d\n",
812 keyconf->keyidx, sta_id);
814 if (keyconf->keyidx != keyidx) {
815 /* We need to remove a key with index different that the one
816 * in the uCode. This means that the key we need to remove has
817 * been replaced by another one with different index.
818 * Don't do anything and return ok
820 spin_unlock_irqrestore(&priv->sta_lock, flags);
824 if (priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET) {
825 IWL_WARN(priv, "Removing wrong key %d 0x%x\n",
826 keyconf->keyidx, key_flags);
827 spin_unlock_irqrestore(&priv->sta_lock, flags);
831 if (!test_and_clear_bit(priv->stations[sta_id].sta.key.key_offset,
832 &priv->ucode_key_table))
833 IWL_ERR(priv, "index %d not used in uCode key table.\n",
834 priv->stations[sta_id].sta.key.key_offset);
835 memset(&priv->stations[sta_id].keyinfo, 0,
836 sizeof(struct iwl_hw_key));
837 memset(&priv->stations[sta_id].sta.key, 0,
838 sizeof(struct iwl4965_keyinfo));
839 priv->stations[sta_id].sta.key.key_flags =
840 STA_KEY_FLG_NO_ENC | STA_KEY_FLG_INVALID;
841 priv->stations[sta_id].sta.key.key_offset = WEP_INVALID_OFFSET;
842 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
843 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
845 if (iwl_is_rfkill(priv)) {
846 IWL_DEBUG_WEP(priv, "Not sending REPLY_ADD_STA command because RFKILL enabled. \n");
847 spin_unlock_irqrestore(&priv->sta_lock, flags);
850 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
851 spin_unlock_irqrestore(&priv->sta_lock, flags);
854 EXPORT_SYMBOL(iwl_remove_dynamic_key);
856 int iwl_set_dynamic_key(struct iwl_priv *priv,
857 struct ieee80211_key_conf *keyconf, u8 sta_id)
861 priv->key_mapping_key++;
862 keyconf->hw_key_idx = HW_KEY_DYNAMIC;
864 switch (keyconf->alg) {
866 ret = iwl_set_ccmp_dynamic_key_info(priv, keyconf, sta_id);
869 ret = iwl_set_tkip_dynamic_key_info(priv, keyconf, sta_id);
872 ret = iwl_set_wep_dynamic_key_info(priv, keyconf, sta_id);
876 "Unknown alg: %s alg = %d\n", __func__, keyconf->alg);
880 IWL_DEBUG_WEP(priv, "Set dynamic key: alg= %d len=%d idx=%d sta=%d ret=%d\n",
881 keyconf->alg, keyconf->keylen, keyconf->keyidx,
886 EXPORT_SYMBOL(iwl_set_dynamic_key);
888 #ifdef CONFIG_IWLWIFI_DEBUG
889 static void iwl_dump_lq_cmd(struct iwl_priv *priv,
890 struct iwl_link_quality_cmd *lq)
893 IWL_DEBUG_RATE(priv, "lq station id 0x%x\n", lq->sta_id);
894 IWL_DEBUG_RATE(priv, "lq ant 0x%X 0x%X\n",
895 lq->general_params.single_stream_ant_msk,
896 lq->general_params.dual_stream_ant_msk);
898 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++)
899 IWL_DEBUG_RATE(priv, "lq index %d 0x%X\n",
900 i, lq->rs_table[i].rate_n_flags);
903 static inline void iwl_dump_lq_cmd(struct iwl_priv *priv,
904 struct iwl_link_quality_cmd *lq)
909 int iwl_send_lq_cmd(struct iwl_priv *priv,
910 struct iwl_link_quality_cmd *lq, u8 flags)
912 struct iwl_host_cmd cmd = {
913 .id = REPLY_TX_LINK_QUALITY_CMD,
914 .len = sizeof(struct iwl_link_quality_cmd),
919 if ((lq->sta_id == 0xFF) &&
920 (priv->iw_mode == NL80211_IFTYPE_ADHOC))
923 if (lq->sta_id == 0xFF)
924 lq->sta_id = IWL_AP_ID;
926 iwl_dump_lq_cmd(priv, lq);
928 if (iwl_is_associated(priv) && priv->assoc_station_added)
929 return iwl_send_cmd(priv, &cmd);
933 EXPORT_SYMBOL(iwl_send_lq_cmd);
936 * iwl_sta_init_lq - Initialize a station's hardware rate table
938 * The uCode's station table contains a table of fallback rates
939 * for automatic fallback during transmission.
941 * NOTE: This sets up a default set of values. These will be replaced later
942 * if the driver's iwl-agn-rs rate scaling algorithm is used, instead of
945 * NOTE: Run REPLY_ADD_STA command to set up station table entry, before
946 * calling this function (which runs REPLY_TX_LINK_QUALITY_CMD,
947 * which requires station table entry to exist).
949 static void iwl_sta_init_lq(struct iwl_priv *priv, const u8 *addr, bool is_ap)
952 struct iwl_link_quality_cmd link_cmd = {
957 /* Set up the rate scaling to start at selected rate, fall back
958 * all the way down to 1M in IEEE order, and then spin on 1M */
960 r = IWL_RATE_54M_INDEX;
961 else if (priv->band == IEEE80211_BAND_5GHZ)
962 r = IWL_RATE_6M_INDEX;
964 r = IWL_RATE_1M_INDEX;
966 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) {
968 if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE)
969 rate_flags |= RATE_MCS_CCK_MSK;
971 rate_flags |= first_antenna(priv->hw_params.valid_tx_ant) <<
974 link_cmd.rs_table[i].rate_n_flags =
975 iwl_hw_set_rate_n_flags(iwl_rates[r].plcp, rate_flags);
976 r = iwl_get_prev_ieee_rate(r);
979 link_cmd.general_params.single_stream_ant_msk =
980 first_antenna(priv->hw_params.valid_tx_ant);
981 link_cmd.general_params.dual_stream_ant_msk = 3;
982 link_cmd.agg_params.agg_dis_start_th = LINK_QUAL_AGG_DISABLE_START_DEF;
983 link_cmd.agg_params.agg_time_limit =
984 cpu_to_le16(LINK_QUAL_AGG_TIME_LIMIT_DEF);
986 /* Update the rate scaling for control frame Tx to AP */
987 link_cmd.sta_id = is_ap ? IWL_AP_ID : priv->hw_params.bcast_sta_id;
989 iwl_send_cmd_pdu_async(priv, REPLY_TX_LINK_QUALITY_CMD,
990 sizeof(link_cmd), &link_cmd, NULL);
994 * iwl_rxon_add_station - add station into station table.
996 * there is only one AP station with id= IWL_AP_ID
997 * NOTE: mutex must be held before calling this function
999 int iwl_rxon_add_station(struct iwl_priv *priv, const u8 *addr, bool is_ap)
1001 struct ieee80211_sta *sta;
1002 struct ieee80211_sta_ht_cap ht_config;
1003 struct ieee80211_sta_ht_cap *cur_ht_config = NULL;
1006 /* Add station to device's station table */
1009 * XXX: This check is definitely not correct, if we're an AP
1010 * it'll always be false which is not what we want, but
1011 * it doesn't look like iwlagn is prepared to be an HT
1014 if (priv->current_ht_config.is_ht) {
1016 sta = ieee80211_find_sta(priv->vif, addr);
1018 memcpy(&ht_config, &sta->ht_cap, sizeof(ht_config));
1019 cur_ht_config = &ht_config;
1024 sta_id = iwl_add_station(priv, addr, is_ap, CMD_SYNC, cur_ht_config);
1026 /* Set up default rate scaling table in device's station table */
1027 iwl_sta_init_lq(priv, addr, is_ap);
1031 EXPORT_SYMBOL(iwl_rxon_add_station);
1034 * iwl_sta_init_bcast_lq - Initialize a bcast station's hardware rate table
1036 * NOTE: Run REPLY_ADD_STA command to set up station table entry, before
1037 * calling this function (which runs REPLY_TX_LINK_QUALITY_CMD,
1038 * which requires station table entry to exist).
1040 static void iwl_sta_init_bcast_lq(struct iwl_priv *priv)
1043 struct iwl_link_quality_cmd link_cmd = {
1048 /* Set up the rate scaling to start at selected rate, fall back
1049 * all the way down to 1M in IEEE order, and then spin on 1M */
1050 if (priv->band == IEEE80211_BAND_5GHZ)
1051 r = IWL_RATE_6M_INDEX;
1053 r = IWL_RATE_1M_INDEX;
1055 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) {
1057 if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE)
1058 rate_flags |= RATE_MCS_CCK_MSK;
1060 rate_flags |= first_antenna(priv->hw_params.valid_tx_ant) <<
1063 link_cmd.rs_table[i].rate_n_flags =
1064 iwl_hw_set_rate_n_flags(iwl_rates[r].plcp, rate_flags);
1065 r = iwl_get_prev_ieee_rate(r);
1068 link_cmd.general_params.single_stream_ant_msk =
1069 first_antenna(priv->hw_params.valid_tx_ant);
1070 link_cmd.general_params.dual_stream_ant_msk = 3;
1071 link_cmd.agg_params.agg_dis_start_th = LINK_QUAL_AGG_DISABLE_START_DEF;
1072 link_cmd.agg_params.agg_time_limit =
1073 cpu_to_le16(LINK_QUAL_AGG_TIME_LIMIT_DEF);
1075 /* Update the rate scaling for control frame Tx to AP */
1076 link_cmd.sta_id = priv->hw_params.bcast_sta_id;
1078 iwl_send_cmd_pdu_async(priv, REPLY_TX_LINK_QUALITY_CMD,
1079 sizeof(link_cmd), &link_cmd, NULL);
1084 * iwl_add_bcast_station - add broadcast station into station table.
1086 void iwl_add_bcast_station(struct iwl_priv *priv)
1088 iwl_add_station(priv, iwl_bcast_addr, false, CMD_SYNC, NULL);
1090 /* Set up default rate scaling table in device's station table */
1091 iwl_sta_init_bcast_lq(priv);
1093 EXPORT_SYMBOL(iwl_add_bcast_station);
1096 * iwl_get_sta_id - Find station's index within station table
1098 * If new IBSS station, create new entry in station table
1100 int iwl_get_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
1103 __le16 fc = hdr->frame_control;
1105 /* If this frame is broadcast or management, use broadcast station id */
1106 if (!ieee80211_is_data(fc) || is_multicast_ether_addr(hdr->addr1))
1107 return priv->hw_params.bcast_sta_id;
1109 switch (priv->iw_mode) {
1111 /* If we are a client station in a BSS network, use the special
1112 * AP station entry (that's the only station we communicate with) */
1113 case NL80211_IFTYPE_STATION:
1116 /* If we are an AP, then find the station, or use BCAST */
1117 case NL80211_IFTYPE_AP:
1118 sta_id = iwl_find_station(priv, hdr->addr1);
1119 if (sta_id != IWL_INVALID_STATION)
1121 return priv->hw_params.bcast_sta_id;
1123 /* If this frame is going out to an IBSS network, find the station,
1124 * or create a new station table entry */
1125 case NL80211_IFTYPE_ADHOC:
1126 sta_id = iwl_find_station(priv, hdr->addr1);
1127 if (sta_id != IWL_INVALID_STATION)
1130 /* Create new station table entry */
1131 sta_id = iwl_add_station(priv, hdr->addr1, false,
1134 if (sta_id != IWL_INVALID_STATION)
1137 IWL_DEBUG_DROP(priv, "Station %pM not in station map. "
1138 "Defaulting to broadcast...\n",
1140 iwl_print_hex_dump(priv, IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
1141 return priv->hw_params.bcast_sta_id;
1144 IWL_WARN(priv, "Unknown mode of operation: %d\n",
1146 return priv->hw_params.bcast_sta_id;
1149 EXPORT_SYMBOL(iwl_get_sta_id);
1152 * iwl_sta_tx_modify_enable_tid - Enable Tx for this TID in station table
1154 void iwl_sta_tx_modify_enable_tid(struct iwl_priv *priv, int sta_id, int tid)
1156 unsigned long flags;
1158 /* Remove "disable" flag, to enable Tx for this TID */
1159 spin_lock_irqsave(&priv->sta_lock, flags);
1160 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_TID_DISABLE_TX;
1161 priv->stations[sta_id].sta.tid_disable_tx &= cpu_to_le16(~(1 << tid));
1162 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1163 spin_unlock_irqrestore(&priv->sta_lock, flags);
1165 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
1167 EXPORT_SYMBOL(iwl_sta_tx_modify_enable_tid);
1169 int iwl_sta_rx_agg_start(struct iwl_priv *priv,
1170 const u8 *addr, int tid, u16 ssn)
1172 unsigned long flags;
1175 sta_id = iwl_find_station(priv, addr);
1176 if (sta_id == IWL_INVALID_STATION)
1179 spin_lock_irqsave(&priv->sta_lock, flags);
1180 priv->stations[sta_id].sta.station_flags_msk = 0;
1181 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_ADDBA_TID_MSK;
1182 priv->stations[sta_id].sta.add_immediate_ba_tid = (u8)tid;
1183 priv->stations[sta_id].sta.add_immediate_ba_ssn = cpu_to_le16(ssn);
1184 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1185 spin_unlock_irqrestore(&priv->sta_lock, flags);
1187 return iwl_send_add_sta(priv, &priv->stations[sta_id].sta,
1190 EXPORT_SYMBOL(iwl_sta_rx_agg_start);
1192 int iwl_sta_rx_agg_stop(struct iwl_priv *priv, const u8 *addr, int tid)
1194 unsigned long flags;
1197 sta_id = iwl_find_station(priv, addr);
1198 if (sta_id == IWL_INVALID_STATION) {
1199 IWL_ERR(priv, "Invalid station for AGG tid %d\n", tid);
1203 spin_lock_irqsave(&priv->sta_lock, flags);
1204 priv->stations[sta_id].sta.station_flags_msk = 0;
1205 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_DELBA_TID_MSK;
1206 priv->stations[sta_id].sta.remove_immediate_ba_tid = (u8)tid;
1207 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1208 spin_unlock_irqrestore(&priv->sta_lock, flags);
1210 return iwl_send_add_sta(priv, &priv->stations[sta_id].sta,
1213 EXPORT_SYMBOL(iwl_sta_rx_agg_stop);
1215 void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id)
1217 unsigned long flags;
1219 spin_lock_irqsave(&priv->sta_lock, flags);
1220 priv->stations[sta_id].sta.station_flags &= ~STA_FLG_PWR_SAVE_MSK;
1221 priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK;
1222 priv->stations[sta_id].sta.sta.modify_mask = 0;
1223 priv->stations[sta_id].sta.sleep_tx_count = 0;
1224 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1225 spin_unlock_irqrestore(&priv->sta_lock, flags);
1227 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
1229 EXPORT_SYMBOL(iwl_sta_modify_ps_wake);
1231 void iwl_sta_modify_sleep_tx_count(struct iwl_priv *priv, int sta_id, int cnt)
1233 unsigned long flags;
1235 spin_lock_irqsave(&priv->sta_lock, flags);
1236 priv->stations[sta_id].sta.station_flags |= STA_FLG_PWR_SAVE_MSK;
1237 priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK;
1238 priv->stations[sta_id].sta.sta.modify_mask =
1239 STA_MODIFY_SLEEP_TX_COUNT_MSK;
1240 priv->stations[sta_id].sta.sleep_tx_count = cpu_to_le16(cnt);
1241 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1242 spin_unlock_irqrestore(&priv->sta_lock, flags);
1244 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);