1 /******************************************************************************
3 * Copyright(c) 2003 - 2010 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 /* priv->sta_lock must be held */
84 static void iwl_sta_ucode_activate(struct iwl_priv *priv, u8 sta_id)
87 if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE))
88 IWL_ERR(priv, "ACTIVATE a non DRIVER active station id %u addr %pM\n",
89 sta_id, priv->stations[sta_id].sta.sta.addr);
91 if (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE) {
93 "STA id %u addr %pM already present in uCode (according to driver)\n",
94 sta_id, priv->stations[sta_id].sta.sta.addr);
96 priv->stations[sta_id].used |= IWL_STA_UCODE_ACTIVE;
97 IWL_DEBUG_ASSOC(priv, "Added STA id %u addr %pM to uCode\n",
98 sta_id, priv->stations[sta_id].sta.sta.addr);
102 static void iwl_process_add_sta_resp(struct iwl_priv *priv,
103 struct iwl_addsta_cmd *addsta,
104 struct iwl_rx_packet *pkt,
107 u8 sta_id = addsta->sta.sta_id;
110 if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
111 IWL_ERR(priv, "Bad return from REPLY_ADD_STA (0x%08X)\n",
116 IWL_DEBUG_INFO(priv, "Processing response for adding station %u\n",
119 spin_lock_irqsave(&priv->sta_lock, flags);
121 switch (pkt->u.add_sta.status) {
122 case ADD_STA_SUCCESS_MSK:
123 IWL_DEBUG_INFO(priv, "REPLY_ADD_STA PASSED\n");
124 iwl_sta_ucode_activate(priv, sta_id);
126 case ADD_STA_NO_ROOM_IN_TABLE:
127 IWL_ERR(priv, "Adding station %d failed, no room in table.\n",
130 case ADD_STA_NO_BLOCK_ACK_RESOURCE:
131 IWL_ERR(priv, "Adding station %d failed, no block ack resource.\n",
134 case ADD_STA_MODIFY_NON_EXIST_STA:
135 IWL_ERR(priv, "Attempting to modify non-existing station %d \n",
139 IWL_DEBUG_ASSOC(priv, "Received REPLY_ADD_STA:(0x%08X)\n",
140 pkt->u.add_sta.status);
144 IWL_DEBUG_INFO(priv, "%s station id %u addr %pM\n",
145 priv->stations[sta_id].sta.mode ==
146 STA_CONTROL_MODIFY_MSK ? "Modified" : "Added",
147 sta_id, priv->stations[sta_id].sta.sta.addr);
150 * XXX: The MAC address in the command buffer is often changed from
151 * the original sent to the device. That is, the MAC address
152 * written to the command buffer often is not the same MAC adress
153 * read from the command buffer when the command returns. This
154 * issue has not yet been resolved and this debugging is left to
155 * observe the problem.
157 IWL_DEBUG_INFO(priv, "%s station according to cmd buffer %pM\n",
158 priv->stations[sta_id].sta.mode ==
159 STA_CONTROL_MODIFY_MSK ? "Modified" : "Added",
163 * Determine if we wanted to modify or add a station,
164 * if adding a station succeeded we have some more initialization
165 * to do when using station notification. TODO
168 spin_unlock_irqrestore(&priv->sta_lock, flags);
171 static void iwl_add_sta_callback(struct iwl_priv *priv,
172 struct iwl_device_cmd *cmd,
173 struct iwl_rx_packet *pkt)
175 struct iwl_addsta_cmd *addsta =
176 (struct iwl_addsta_cmd *)cmd->cmd.payload;
178 iwl_process_add_sta_resp(priv, addsta, pkt, false);
182 int iwl_send_add_sta(struct iwl_priv *priv,
183 struct iwl_addsta_cmd *sta, u8 flags)
185 struct iwl_rx_packet *pkt = NULL;
187 u8 data[sizeof(*sta)];
188 struct iwl_host_cmd cmd = {
194 if (flags & CMD_ASYNC)
195 cmd.callback = iwl_add_sta_callback;
197 cmd.flags |= CMD_WANT_SKB;
199 cmd.len = priv->cfg->ops->utils->build_addsta_hcmd(sta, data);
200 ret = iwl_send_cmd(priv, &cmd);
202 if (ret || (flags & CMD_ASYNC))
206 pkt = (struct iwl_rx_packet *)cmd.reply_page;
207 iwl_process_add_sta_resp(priv, sta, pkt, true);
209 iwl_free_pages(priv, cmd.reply_page);
213 EXPORT_SYMBOL(iwl_send_add_sta);
215 static void iwl_set_ht_add_station(struct iwl_priv *priv, u8 index,
216 struct ieee80211_sta_ht_cap *sta_ht_inf)
221 if (!sta_ht_inf || !sta_ht_inf->ht_supported)
224 mimo_ps_mode = (sta_ht_inf->cap & IEEE80211_HT_CAP_SM_PS) >> 2;
225 IWL_DEBUG_ASSOC(priv, "spatial multiplexing power save mode: %s\n",
226 (mimo_ps_mode == WLAN_HT_CAP_SM_PS_STATIC) ?
228 (mimo_ps_mode == WLAN_HT_CAP_SM_PS_DYNAMIC) ?
229 "dynamic" : "disabled");
231 sta_flags = priv->stations[index].sta.station_flags;
233 sta_flags &= ~(STA_FLG_RTS_MIMO_PROT_MSK | STA_FLG_MIMO_DIS_MSK);
235 switch (mimo_ps_mode) {
236 case WLAN_HT_CAP_SM_PS_STATIC:
237 sta_flags |= STA_FLG_MIMO_DIS_MSK;
239 case WLAN_HT_CAP_SM_PS_DYNAMIC:
240 sta_flags |= STA_FLG_RTS_MIMO_PROT_MSK;
242 case WLAN_HT_CAP_SM_PS_DISABLED:
245 IWL_WARN(priv, "Invalid MIMO PS mode %d\n", mimo_ps_mode);
249 sta_flags |= cpu_to_le32(
250 (u32)sta_ht_inf->ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS);
252 sta_flags |= cpu_to_le32(
253 (u32)sta_ht_inf->ampdu_density << STA_FLG_AGG_MPDU_DENSITY_POS);
255 if (iwl_is_ht40_tx_allowed(priv, sta_ht_inf))
256 sta_flags |= STA_FLG_HT40_EN_MSK;
258 sta_flags &= ~STA_FLG_HT40_EN_MSK;
260 priv->stations[index].sta.station_flags = sta_flags;
266 * iwl_add_station - Add station to tables in driver and device
268 u8 iwl_add_station(struct iwl_priv *priv, const u8 *addr, bool is_ap, u8 flags,
269 struct ieee80211_sta_ht_cap *ht_info)
271 struct iwl_station_entry *station;
272 unsigned long flags_spin;
274 int sta_id = IWL_INVALID_STATION;
277 spin_lock_irqsave(&priv->sta_lock, flags_spin);
280 else if (is_broadcast_ether_addr(addr))
281 sta_id = priv->hw_params.bcast_sta_id;
283 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++) {
284 if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
290 if (!priv->stations[i].used &&
291 sta_id == IWL_INVALID_STATION)
295 /* These two conditions have the same outcome, but keep them separate
296 since they have different meanings */
297 if (unlikely(sta_id == IWL_INVALID_STATION)) {
298 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
302 if (priv->stations[sta_id].used &&
303 !compare_ether_addr(priv->stations[sta_id].sta.sta.addr, addr)) {
304 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
309 station = &priv->stations[sta_id];
310 station->used = IWL_STA_DRIVER_ACTIVE;
311 IWL_DEBUG_ASSOC(priv, "Add STA to driver ID %d: %pM\n",
313 priv->num_stations++;
315 /* Set up the REPLY_ADD_STA command to send to device */
316 memset(&station->sta, 0, sizeof(struct iwl_addsta_cmd));
317 memcpy(station->sta.sta.addr, addr, ETH_ALEN);
318 station->sta.mode = 0;
319 station->sta.sta.sta_id = sta_id;
320 station->sta.station_flags = 0;
322 /* BCAST station and IBSS stations do not work in HT mode */
323 if (sta_id != priv->hw_params.bcast_sta_id &&
324 priv->iw_mode != NL80211_IFTYPE_ADHOC)
325 iwl_set_ht_add_station(priv, sta_id, ht_info);
328 rate = (priv->band == IEEE80211_BAND_5GHZ) ?
329 IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP;
330 /* Turn on both antennas for the station... */
331 station->sta.rate_n_flags = cpu_to_le16(rate | RATE_MCS_ANT_AB_MSK);
333 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
335 /* Add station to device's station table */
336 iwl_send_add_sta(priv, &station->sta, flags);
340 EXPORT_SYMBOL(iwl_add_station);
342 static void iwl_sta_ucode_deactivate(struct iwl_priv *priv, const u8 *addr)
345 u8 sta_id = iwl_find_station(priv, addr);
347 BUG_ON(sta_id == IWL_INVALID_STATION);
349 IWL_DEBUG_ASSOC(priv, "Removed STA from Ucode: %pM\n", addr);
351 spin_lock_irqsave(&priv->sta_lock, flags);
353 /* Ucode must be active and driver must be non active */
354 if (priv->stations[sta_id].used != IWL_STA_UCODE_ACTIVE)
355 IWL_ERR(priv, "removed non active STA %d\n", sta_id);
357 priv->stations[sta_id].used &= ~IWL_STA_UCODE_ACTIVE;
359 memset(&priv->stations[sta_id], 0, sizeof(struct iwl_station_entry));
360 spin_unlock_irqrestore(&priv->sta_lock, flags);
363 static void iwl_remove_sta_callback(struct iwl_priv *priv,
364 struct iwl_device_cmd *cmd,
365 struct iwl_rx_packet *pkt)
367 struct iwl_rem_sta_cmd *rm_sta =
368 (struct iwl_rem_sta_cmd *)cmd->cmd.payload;
369 const u8 *addr = rm_sta->addr;
371 if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
372 IWL_ERR(priv, "Bad return from REPLY_REMOVE_STA (0x%08X)\n",
377 switch (pkt->u.rem_sta.status) {
378 case REM_STA_SUCCESS_MSK:
379 iwl_sta_ucode_deactivate(priv, addr);
382 IWL_ERR(priv, "REPLY_REMOVE_STA failed\n");
387 static int iwl_send_remove_station(struct iwl_priv *priv, const u8 *addr,
390 struct iwl_rx_packet *pkt;
393 struct iwl_rem_sta_cmd rm_sta_cmd;
395 struct iwl_host_cmd cmd = {
396 .id = REPLY_REMOVE_STA,
397 .len = sizeof(struct iwl_rem_sta_cmd),
402 memset(&rm_sta_cmd, 0, sizeof(rm_sta_cmd));
403 rm_sta_cmd.num_sta = 1;
404 memcpy(&rm_sta_cmd.addr, addr , ETH_ALEN);
406 if (flags & CMD_ASYNC)
407 cmd.callback = iwl_remove_sta_callback;
409 cmd.flags |= CMD_WANT_SKB;
410 ret = iwl_send_cmd(priv, &cmd);
412 if (ret || (flags & CMD_ASYNC))
415 pkt = (struct iwl_rx_packet *)cmd.reply_page;
416 if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
417 IWL_ERR(priv, "Bad return from REPLY_REMOVE_STA (0x%08X)\n",
423 switch (pkt->u.rem_sta.status) {
424 case REM_STA_SUCCESS_MSK:
425 iwl_sta_ucode_deactivate(priv, addr);
426 IWL_DEBUG_ASSOC(priv, "REPLY_REMOVE_STA PASSED\n");
430 IWL_ERR(priv, "REPLY_REMOVE_STA failed\n");
434 iwl_free_pages(priv, cmd.reply_page);
440 * iwl_remove_station - Remove driver's knowledge of station.
442 int iwl_remove_station(struct iwl_priv *priv, const u8 *addr, bool is_ap)
444 int sta_id = IWL_INVALID_STATION;
445 int i, ret = -EINVAL;
448 spin_lock_irqsave(&priv->sta_lock, flags);
452 else if (is_broadcast_ether_addr(addr))
453 sta_id = priv->hw_params.bcast_sta_id;
455 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++)
456 if (priv->stations[i].used &&
457 !compare_ether_addr(priv->stations[i].sta.sta.addr,
463 if (unlikely(sta_id == IWL_INVALID_STATION))
466 IWL_DEBUG_ASSOC(priv, "Removing STA from driver:%d %pM\n",
469 if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) {
470 IWL_ERR(priv, "Removing %pM but non DRIVER active\n",
475 if (!(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) {
476 IWL_ERR(priv, "Removing %pM but non UCODE active\n",
482 priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE;
484 priv->num_stations--;
486 BUG_ON(priv->num_stations < 0);
488 spin_unlock_irqrestore(&priv->sta_lock, flags);
490 ret = iwl_send_remove_station(priv, addr, CMD_ASYNC);
493 spin_unlock_irqrestore(&priv->sta_lock, flags);
498 * iwl_clear_stations_table - Clear the driver's station table
500 * NOTE: This does not clear or otherwise alter the device's station table.
502 void iwl_clear_stations_table(struct iwl_priv *priv)
507 spin_lock_irqsave(&priv->sta_lock, flags);
509 if (iwl_is_alive(priv) &&
510 !test_bit(STATUS_EXIT_PENDING, &priv->status) &&
511 iwl_send_cmd_pdu_async(priv, REPLY_REMOVE_ALL_STA, 0, NULL, NULL))
512 IWL_ERR(priv, "Couldn't clear the station table\n");
514 priv->num_stations = 0;
515 memset(priv->stations, 0, sizeof(priv->stations));
517 /* clean ucode key table bit map */
518 priv->ucode_key_table = 0;
520 /* keep track of static keys */
521 for (i = 0; i < WEP_KEYS_MAX ; i++) {
522 if (priv->wep_keys[i].key_size)
523 set_bit(i, &priv->ucode_key_table);
526 spin_unlock_irqrestore(&priv->sta_lock, flags);
528 EXPORT_SYMBOL(iwl_clear_stations_table);
530 int iwl_get_free_ucode_key_index(struct iwl_priv *priv)
534 for (i = 0; i < STA_KEY_MAX_NUM; i++)
535 if (!test_and_set_bit(i, &priv->ucode_key_table))
538 return WEP_INVALID_OFFSET;
540 EXPORT_SYMBOL(iwl_get_free_ucode_key_index);
542 int iwl_send_static_wepkey_cmd(struct iwl_priv *priv, u8 send_if_empty)
544 int i, not_empty = 0;
545 u8 buff[sizeof(struct iwl_wep_cmd) +
546 sizeof(struct iwl_wep_key) * WEP_KEYS_MAX];
547 struct iwl_wep_cmd *wep_cmd = (struct iwl_wep_cmd *)buff;
548 size_t cmd_size = sizeof(struct iwl_wep_cmd);
549 struct iwl_host_cmd cmd = {
555 memset(wep_cmd, 0, cmd_size +
556 (sizeof(struct iwl_wep_key) * WEP_KEYS_MAX));
558 for (i = 0; i < WEP_KEYS_MAX ; i++) {
559 wep_cmd->key[i].key_index = i;
560 if (priv->wep_keys[i].key_size) {
561 wep_cmd->key[i].key_offset = i;
564 wep_cmd->key[i].key_offset = WEP_INVALID_OFFSET;
567 wep_cmd->key[i].key_size = priv->wep_keys[i].key_size;
568 memcpy(&wep_cmd->key[i].key[3], priv->wep_keys[i].key,
569 priv->wep_keys[i].key_size);
572 wep_cmd->global_key_type = WEP_KEY_WEP_TYPE;
573 wep_cmd->num_keys = WEP_KEYS_MAX;
575 cmd_size += sizeof(struct iwl_wep_key) * WEP_KEYS_MAX;
579 if (not_empty || send_if_empty)
580 return iwl_send_cmd(priv, &cmd);
584 EXPORT_SYMBOL(iwl_send_static_wepkey_cmd);
586 int iwl_remove_default_wep_key(struct iwl_priv *priv,
587 struct ieee80211_key_conf *keyconf)
592 spin_lock_irqsave(&priv->sta_lock, flags);
593 IWL_DEBUG_WEP(priv, "Removing default WEP key: idx=%d\n",
596 if (!test_and_clear_bit(keyconf->keyidx, &priv->ucode_key_table))
597 IWL_ERR(priv, "index %d not used in uCode key table.\n",
600 priv->default_wep_key--;
601 memset(&priv->wep_keys[keyconf->keyidx], 0, sizeof(priv->wep_keys[0]));
602 if (iwl_is_rfkill(priv)) {
603 IWL_DEBUG_WEP(priv, "Not sending REPLY_WEPKEY command due to RFKILL.\n");
604 spin_unlock_irqrestore(&priv->sta_lock, flags);
607 ret = iwl_send_static_wepkey_cmd(priv, 1);
608 IWL_DEBUG_WEP(priv, "Remove default WEP key: idx=%d ret=%d\n",
609 keyconf->keyidx, ret);
610 spin_unlock_irqrestore(&priv->sta_lock, flags);
614 EXPORT_SYMBOL(iwl_remove_default_wep_key);
616 int iwl_set_default_wep_key(struct iwl_priv *priv,
617 struct ieee80211_key_conf *keyconf)
622 if (keyconf->keylen != WEP_KEY_LEN_128 &&
623 keyconf->keylen != WEP_KEY_LEN_64) {
624 IWL_DEBUG_WEP(priv, "Bad WEP key length %d\n", keyconf->keylen);
628 keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;
629 keyconf->hw_key_idx = HW_KEY_DEFAULT;
630 priv->stations[IWL_AP_ID].keyinfo.alg = ALG_WEP;
632 spin_lock_irqsave(&priv->sta_lock, flags);
633 priv->default_wep_key++;
635 if (test_and_set_bit(keyconf->keyidx, &priv->ucode_key_table))
636 IWL_ERR(priv, "index %d already used in uCode key table.\n",
639 priv->wep_keys[keyconf->keyidx].key_size = keyconf->keylen;
640 memcpy(&priv->wep_keys[keyconf->keyidx].key, &keyconf->key,
643 ret = iwl_send_static_wepkey_cmd(priv, 0);
644 IWL_DEBUG_WEP(priv, "Set default WEP key: len=%d idx=%d ret=%d\n",
645 keyconf->keylen, keyconf->keyidx, ret);
646 spin_unlock_irqrestore(&priv->sta_lock, flags);
650 EXPORT_SYMBOL(iwl_set_default_wep_key);
652 static int iwl_set_wep_dynamic_key_info(struct iwl_priv *priv,
653 struct ieee80211_key_conf *keyconf,
657 __le16 key_flags = 0;
660 keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;
662 key_flags |= (STA_KEY_FLG_WEP | STA_KEY_FLG_MAP_KEY_MSK);
663 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
664 key_flags &= ~STA_KEY_FLG_INVALID;
666 if (keyconf->keylen == WEP_KEY_LEN_128)
667 key_flags |= STA_KEY_FLG_KEY_SIZE_MSK;
669 if (sta_id == priv->hw_params.bcast_sta_id)
670 key_flags |= STA_KEY_MULTICAST_MSK;
672 spin_lock_irqsave(&priv->sta_lock, flags);
674 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
675 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
676 priv->stations[sta_id].keyinfo.keyidx = keyconf->keyidx;
678 memcpy(priv->stations[sta_id].keyinfo.key,
679 keyconf->key, keyconf->keylen);
681 memcpy(&priv->stations[sta_id].sta.key.key[3],
682 keyconf->key, keyconf->keylen);
684 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
685 == STA_KEY_FLG_NO_ENC)
686 priv->stations[sta_id].sta.key.key_offset =
687 iwl_get_free_ucode_key_index(priv);
688 /* else, we are overriding an existing key => no need to allocated room
691 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
692 "no space for a new key");
694 priv->stations[sta_id].sta.key.key_flags = key_flags;
695 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
696 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
698 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
700 spin_unlock_irqrestore(&priv->sta_lock, flags);
705 static int iwl_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
706 struct ieee80211_key_conf *keyconf,
710 __le16 key_flags = 0;
713 key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK);
714 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
715 key_flags &= ~STA_KEY_FLG_INVALID;
717 if (sta_id == priv->hw_params.bcast_sta_id)
718 key_flags |= STA_KEY_MULTICAST_MSK;
720 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
722 spin_lock_irqsave(&priv->sta_lock, flags);
723 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
724 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
726 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
729 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
732 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
733 == STA_KEY_FLG_NO_ENC)
734 priv->stations[sta_id].sta.key.key_offset =
735 iwl_get_free_ucode_key_index(priv);
736 /* else, we are overriding an existing key => no need to allocated room
739 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
740 "no space for a new key");
742 priv->stations[sta_id].sta.key.key_flags = key_flags;
743 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
744 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
746 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
748 spin_unlock_irqrestore(&priv->sta_lock, flags);
753 static int iwl_set_tkip_dynamic_key_info(struct iwl_priv *priv,
754 struct ieee80211_key_conf *keyconf,
759 __le16 key_flags = 0;
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 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
769 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
771 spin_lock_irqsave(&priv->sta_lock, flags);
773 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
774 priv->stations[sta_id].keyinfo.keylen = 16;
776 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
777 == STA_KEY_FLG_NO_ENC)
778 priv->stations[sta_id].sta.key.key_offset =
779 iwl_get_free_ucode_key_index(priv);
780 /* else, we are overriding an existing key => no need to allocated room
783 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
784 "no space for a new key");
786 priv->stations[sta_id].sta.key.key_flags = key_flags;
789 /* This copy is acutally not needed: we get the key with each TX */
790 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key, 16);
792 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key, 16);
794 spin_unlock_irqrestore(&priv->sta_lock, flags);
799 void iwl_update_tkip_key(struct iwl_priv *priv,
800 struct ieee80211_key_conf *keyconf,
801 const u8 *addr, u32 iv32, u16 *phase1key)
803 u8 sta_id = IWL_INVALID_STATION;
807 sta_id = iwl_find_station(priv, addr);
808 if (sta_id == IWL_INVALID_STATION) {
809 IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n",
814 if (iwl_scan_cancel(priv)) {
815 /* cancel scan failed, just live w/ bad key and rely
816 briefly on SW decryption */
820 spin_lock_irqsave(&priv->sta_lock, flags);
822 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
824 for (i = 0; i < 5; i++)
825 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
826 cpu_to_le16(phase1key[i]);
828 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
829 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
831 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
833 spin_unlock_irqrestore(&priv->sta_lock, flags);
836 EXPORT_SYMBOL(iwl_update_tkip_key);
838 int iwl_remove_dynamic_key(struct iwl_priv *priv,
839 struct ieee80211_key_conf *keyconf,
847 priv->key_mapping_key--;
849 spin_lock_irqsave(&priv->sta_lock, flags);
850 key_flags = le16_to_cpu(priv->stations[sta_id].sta.key.key_flags);
851 keyidx = (key_flags >> STA_KEY_FLG_KEYID_POS) & 0x3;
853 IWL_DEBUG_WEP(priv, "Remove dynamic key: idx=%d sta=%d\n",
854 keyconf->keyidx, sta_id);
856 if (keyconf->keyidx != keyidx) {
857 /* We need to remove a key with index different that the one
858 * in the uCode. This means that the key we need to remove has
859 * been replaced by another one with different index.
860 * Don't do anything and return ok
862 spin_unlock_irqrestore(&priv->sta_lock, flags);
866 if (priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET) {
867 IWL_WARN(priv, "Removing wrong key %d 0x%x\n",
868 keyconf->keyidx, key_flags);
869 spin_unlock_irqrestore(&priv->sta_lock, flags);
873 if (!test_and_clear_bit(priv->stations[sta_id].sta.key.key_offset,
874 &priv->ucode_key_table))
875 IWL_ERR(priv, "index %d not used in uCode key table.\n",
876 priv->stations[sta_id].sta.key.key_offset);
877 memset(&priv->stations[sta_id].keyinfo, 0,
878 sizeof(struct iwl_hw_key));
879 memset(&priv->stations[sta_id].sta.key, 0,
880 sizeof(struct iwl4965_keyinfo));
881 priv->stations[sta_id].sta.key.key_flags =
882 STA_KEY_FLG_NO_ENC | STA_KEY_FLG_INVALID;
883 priv->stations[sta_id].sta.key.key_offset = WEP_INVALID_OFFSET;
884 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
885 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
887 if (iwl_is_rfkill(priv)) {
888 IWL_DEBUG_WEP(priv, "Not sending REPLY_ADD_STA command because RFKILL enabled. \n");
889 spin_unlock_irqrestore(&priv->sta_lock, flags);
892 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
893 spin_unlock_irqrestore(&priv->sta_lock, flags);
896 EXPORT_SYMBOL(iwl_remove_dynamic_key);
898 int iwl_set_dynamic_key(struct iwl_priv *priv,
899 struct ieee80211_key_conf *keyconf, u8 sta_id)
903 priv->key_mapping_key++;
904 keyconf->hw_key_idx = HW_KEY_DYNAMIC;
906 switch (keyconf->alg) {
908 ret = iwl_set_ccmp_dynamic_key_info(priv, keyconf, sta_id);
911 ret = iwl_set_tkip_dynamic_key_info(priv, keyconf, sta_id);
914 ret = iwl_set_wep_dynamic_key_info(priv, keyconf, sta_id);
918 "Unknown alg: %s alg = %d\n", __func__, keyconf->alg);
922 IWL_DEBUG_WEP(priv, "Set dynamic key: alg= %d len=%d idx=%d sta=%d ret=%d\n",
923 keyconf->alg, keyconf->keylen, keyconf->keyidx,
928 EXPORT_SYMBOL(iwl_set_dynamic_key);
930 #ifdef CONFIG_IWLWIFI_DEBUG
931 static void iwl_dump_lq_cmd(struct iwl_priv *priv,
932 struct iwl_link_quality_cmd *lq)
935 IWL_DEBUG_RATE(priv, "lq station id 0x%x\n", lq->sta_id);
936 IWL_DEBUG_RATE(priv, "lq ant 0x%X 0x%X\n",
937 lq->general_params.single_stream_ant_msk,
938 lq->general_params.dual_stream_ant_msk);
940 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++)
941 IWL_DEBUG_RATE(priv, "lq index %d 0x%X\n",
942 i, lq->rs_table[i].rate_n_flags);
945 static inline void iwl_dump_lq_cmd(struct iwl_priv *priv,
946 struct iwl_link_quality_cmd *lq)
951 int iwl_send_lq_cmd(struct iwl_priv *priv,
952 struct iwl_link_quality_cmd *lq, u8 flags)
954 struct iwl_host_cmd cmd = {
955 .id = REPLY_TX_LINK_QUALITY_CMD,
956 .len = sizeof(struct iwl_link_quality_cmd),
961 if ((lq->sta_id == 0xFF) &&
962 (priv->iw_mode == NL80211_IFTYPE_ADHOC))
965 if (lq->sta_id == 0xFF)
966 lq->sta_id = IWL_AP_ID;
968 iwl_dump_lq_cmd(priv, lq);
970 if (iwl_is_associated(priv) && priv->assoc_station_added)
971 return iwl_send_cmd(priv, &cmd);
975 EXPORT_SYMBOL(iwl_send_lq_cmd);
978 * iwl_sta_init_lq - Initialize a station's hardware rate table
980 * The uCode's station table contains a table of fallback rates
981 * for automatic fallback during transmission.
983 * NOTE: This sets up a default set of values. These will be replaced later
984 * if the driver's iwl-agn-rs rate scaling algorithm is used, instead of
987 * NOTE: Run REPLY_ADD_STA command to set up station table entry, before
988 * calling this function (which runs REPLY_TX_LINK_QUALITY_CMD,
989 * which requires station table entry to exist).
991 static void iwl_sta_init_lq(struct iwl_priv *priv, const u8 *addr, bool is_ap)
994 struct iwl_link_quality_cmd link_cmd = {
999 /* Set up the rate scaling to start at selected rate, fall back
1000 * all the way down to 1M in IEEE order, and then spin on 1M */
1002 r = IWL_RATE_54M_INDEX;
1003 else if (priv->band == IEEE80211_BAND_5GHZ)
1004 r = IWL_RATE_6M_INDEX;
1006 r = IWL_RATE_1M_INDEX;
1008 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) {
1010 if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE)
1011 rate_flags |= RATE_MCS_CCK_MSK;
1013 rate_flags |= first_antenna(priv->hw_params.valid_tx_ant) <<
1016 link_cmd.rs_table[i].rate_n_flags =
1017 iwl_hw_set_rate_n_flags(iwl_rates[r].plcp, rate_flags);
1018 r = iwl_get_prev_ieee_rate(r);
1021 link_cmd.general_params.single_stream_ant_msk =
1022 first_antenna(priv->hw_params.valid_tx_ant);
1023 link_cmd.general_params.dual_stream_ant_msk = 3;
1024 link_cmd.agg_params.agg_dis_start_th = LINK_QUAL_AGG_DISABLE_START_DEF;
1025 link_cmd.agg_params.agg_time_limit =
1026 cpu_to_le16(LINK_QUAL_AGG_TIME_LIMIT_DEF);
1028 /* Update the rate scaling for control frame Tx to AP */
1029 link_cmd.sta_id = is_ap ? IWL_AP_ID : priv->hw_params.bcast_sta_id;
1031 iwl_send_cmd_pdu_async(priv, REPLY_TX_LINK_QUALITY_CMD,
1032 sizeof(link_cmd), &link_cmd, NULL);
1036 * iwl_rxon_add_station - add station into station table.
1038 * there is only one AP station with id= IWL_AP_ID
1039 * NOTE: mutex must be held before calling this function
1041 int iwl_rxon_add_station(struct iwl_priv *priv, const u8 *addr, bool is_ap)
1043 struct ieee80211_sta *sta;
1044 struct ieee80211_sta_ht_cap ht_config;
1045 struct ieee80211_sta_ht_cap *cur_ht_config = NULL;
1049 * Set HT capabilities. It is ok to set this struct even if not using
1050 * HT config: the priv->current_ht_config.is_ht flag will just be false
1053 sta = ieee80211_find_sta(priv->vif, addr);
1055 memcpy(&ht_config, &sta->ht_cap, sizeof(ht_config));
1056 cur_ht_config = &ht_config;
1060 /* Add station to device's station table */
1061 sta_id = iwl_add_station(priv, addr, is_ap, CMD_SYNC, cur_ht_config);
1063 /* Set up default rate scaling table in device's station table */
1064 iwl_sta_init_lq(priv, addr, is_ap);
1068 EXPORT_SYMBOL(iwl_rxon_add_station);
1071 * iwl_sta_init_bcast_lq - Initialize a bcast station's hardware rate table
1073 * NOTE: Run REPLY_ADD_STA command to set up station table entry, before
1074 * calling this function (which runs REPLY_TX_LINK_QUALITY_CMD,
1075 * which requires station table entry to exist).
1077 static void iwl_sta_init_bcast_lq(struct iwl_priv *priv)
1080 struct iwl_link_quality_cmd link_cmd = {
1085 /* Set up the rate scaling to start at selected rate, fall back
1086 * all the way down to 1M in IEEE order, and then spin on 1M */
1087 if (priv->band == IEEE80211_BAND_5GHZ)
1088 r = IWL_RATE_6M_INDEX;
1090 r = IWL_RATE_1M_INDEX;
1092 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) {
1094 if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE)
1095 rate_flags |= RATE_MCS_CCK_MSK;
1097 rate_flags |= first_antenna(priv->hw_params.valid_tx_ant) <<
1100 link_cmd.rs_table[i].rate_n_flags =
1101 iwl_hw_set_rate_n_flags(iwl_rates[r].plcp, rate_flags);
1102 r = iwl_get_prev_ieee_rate(r);
1105 link_cmd.general_params.single_stream_ant_msk =
1106 first_antenna(priv->hw_params.valid_tx_ant);
1107 link_cmd.general_params.dual_stream_ant_msk = 3;
1108 link_cmd.agg_params.agg_dis_start_th = LINK_QUAL_AGG_DISABLE_START_DEF;
1109 link_cmd.agg_params.agg_time_limit =
1110 cpu_to_le16(LINK_QUAL_AGG_TIME_LIMIT_DEF);
1112 /* Update the rate scaling for control frame Tx to AP */
1113 link_cmd.sta_id = priv->hw_params.bcast_sta_id;
1115 iwl_send_cmd_pdu_async(priv, REPLY_TX_LINK_QUALITY_CMD,
1116 sizeof(link_cmd), &link_cmd, NULL);
1121 * iwl_add_bcast_station - add broadcast station into station table.
1123 void iwl_add_bcast_station(struct iwl_priv *priv)
1125 IWL_DEBUG_INFO(priv, "Adding broadcast station to station table\n");
1126 iwl_add_station(priv, iwl_bcast_addr, false, CMD_SYNC, NULL);
1128 /* Set up default rate scaling table in device's station table */
1129 iwl_sta_init_bcast_lq(priv);
1131 EXPORT_SYMBOL(iwl_add_bcast_station);
1134 * iwl3945_add_bcast_station - add broadcast station into station table.
1136 void iwl3945_add_bcast_station(struct iwl_priv *priv)
1138 IWL_DEBUG_INFO(priv, "Adding broadcast station to station table\n");
1139 iwl_add_station(priv, iwl_bcast_addr, false, CMD_SYNC, NULL);
1141 EXPORT_SYMBOL(iwl3945_add_bcast_station);
1144 * iwl_get_sta_id - Find station's index within station table
1146 * If new IBSS station, create new entry in station table
1148 int iwl_get_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
1151 __le16 fc = hdr->frame_control;
1153 /* If this frame is broadcast or management, use broadcast station id */
1154 if (!ieee80211_is_data(fc) || is_multicast_ether_addr(hdr->addr1))
1155 return priv->hw_params.bcast_sta_id;
1157 switch (priv->iw_mode) {
1159 /* If we are a client station in a BSS network, use the special
1160 * AP station entry (that's the only station we communicate with) */
1161 case NL80211_IFTYPE_STATION:
1164 /* If we are an AP, then find the station, or use BCAST */
1165 case NL80211_IFTYPE_AP:
1166 sta_id = iwl_find_station(priv, hdr->addr1);
1167 if (sta_id != IWL_INVALID_STATION)
1169 return priv->hw_params.bcast_sta_id;
1171 /* If this frame is going out to an IBSS network, find the station,
1172 * or create a new station table entry */
1173 case NL80211_IFTYPE_ADHOC:
1174 sta_id = iwl_find_station(priv, hdr->addr1);
1175 if (sta_id != IWL_INVALID_STATION)
1178 /* Create new station table entry */
1179 sta_id = iwl_add_station(priv, hdr->addr1, false,
1182 if (sta_id != IWL_INVALID_STATION)
1185 IWL_DEBUG_DROP(priv, "Station %pM not in station map. "
1186 "Defaulting to broadcast...\n",
1188 iwl_print_hex_dump(priv, IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
1189 return priv->hw_params.bcast_sta_id;
1192 IWL_WARN(priv, "Unknown mode of operation: %d\n",
1194 return priv->hw_params.bcast_sta_id;
1197 EXPORT_SYMBOL(iwl_get_sta_id);
1200 * iwl_sta_tx_modify_enable_tid - Enable Tx for this TID in station table
1202 void iwl_sta_tx_modify_enable_tid(struct iwl_priv *priv, int sta_id, int tid)
1204 unsigned long flags;
1206 /* Remove "disable" flag, to enable Tx for this TID */
1207 spin_lock_irqsave(&priv->sta_lock, flags);
1208 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_TID_DISABLE_TX;
1209 priv->stations[sta_id].sta.tid_disable_tx &= cpu_to_le16(~(1 << tid));
1210 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1211 spin_unlock_irqrestore(&priv->sta_lock, flags);
1213 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
1215 EXPORT_SYMBOL(iwl_sta_tx_modify_enable_tid);
1217 int iwl_sta_rx_agg_start(struct iwl_priv *priv,
1218 const u8 *addr, int tid, u16 ssn)
1220 unsigned long flags;
1223 sta_id = iwl_find_station(priv, addr);
1224 if (sta_id == IWL_INVALID_STATION)
1227 spin_lock_irqsave(&priv->sta_lock, flags);
1228 priv->stations[sta_id].sta.station_flags_msk = 0;
1229 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_ADDBA_TID_MSK;
1230 priv->stations[sta_id].sta.add_immediate_ba_tid = (u8)tid;
1231 priv->stations[sta_id].sta.add_immediate_ba_ssn = cpu_to_le16(ssn);
1232 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1233 spin_unlock_irqrestore(&priv->sta_lock, flags);
1235 return iwl_send_add_sta(priv, &priv->stations[sta_id].sta,
1238 EXPORT_SYMBOL(iwl_sta_rx_agg_start);
1240 int iwl_sta_rx_agg_stop(struct iwl_priv *priv, const u8 *addr, int tid)
1242 unsigned long flags;
1245 sta_id = iwl_find_station(priv, addr);
1246 if (sta_id == IWL_INVALID_STATION) {
1247 IWL_ERR(priv, "Invalid station for AGG tid %d\n", tid);
1251 spin_lock_irqsave(&priv->sta_lock, flags);
1252 priv->stations[sta_id].sta.station_flags_msk = 0;
1253 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_DELBA_TID_MSK;
1254 priv->stations[sta_id].sta.remove_immediate_ba_tid = (u8)tid;
1255 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1256 spin_unlock_irqrestore(&priv->sta_lock, flags);
1258 return iwl_send_add_sta(priv, &priv->stations[sta_id].sta,
1261 EXPORT_SYMBOL(iwl_sta_rx_agg_stop);
1263 void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id)
1265 unsigned long flags;
1267 spin_lock_irqsave(&priv->sta_lock, flags);
1268 priv->stations[sta_id].sta.station_flags &= ~STA_FLG_PWR_SAVE_MSK;
1269 priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK;
1270 priv->stations[sta_id].sta.sta.modify_mask = 0;
1271 priv->stations[sta_id].sta.sleep_tx_count = 0;
1272 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1273 spin_unlock_irqrestore(&priv->sta_lock, flags);
1275 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
1277 EXPORT_SYMBOL(iwl_sta_modify_ps_wake);
1279 void iwl_sta_modify_sleep_tx_count(struct iwl_priv *priv, int sta_id, int cnt)
1281 unsigned long flags;
1283 spin_lock_irqsave(&priv->sta_lock, flags);
1284 priv->stations[sta_id].sta.station_flags |= STA_FLG_PWR_SAVE_MSK;
1285 priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK;
1286 priv->stations[sta_id].sta.sta.modify_mask =
1287 STA_MODIFY_SLEEP_TX_COUNT_MSK;
1288 priv->stations[sta_id].sta.sleep_tx_count = cpu_to_le16(cnt);
1289 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1290 spin_unlock_irqrestore(&priv->sta_lock, flags);
1292 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);