blob: 9c28ad7a2de1970a028b579b3d4000ec9df8cfe6 [file] [log] [blame]
Emmanuel Grumbach6974e362008-04-14 21:16:06 -07001/******************************************************************************
2 *
Reinette Chatre1f447802010-01-15 13:43:41 -08003 * Copyright(c) 2003 - 2010 Intel Corporation. All rights reserved.
Emmanuel Grumbach6974e362008-04-14 21:16:06 -07004 *
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
7 *
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.
11 *
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
15 * more details.
16 *
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
20 *
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
23 *
24 * Contact Information:
Winkler, Tomas759ef892008-12-09 11:28:58 -080025 * Intel Linux Wireless <ilw@linux.intel.com>
Emmanuel Grumbach6974e362008-04-14 21:16:06 -070026 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 *****************************************************************************/
29
30#include <net/mac80211.h>
Tomas Winkler947b13a2008-04-16 16:34:48 -070031#include <linux/etherdevice.h>
Reinette Chatrefe6b23d2010-02-22 16:24:47 -080032#include <linux/sched.h>
Emmanuel Grumbach6974e362008-04-14 21:16:06 -070033
Tomas Winkler3e0d4cb2008-04-24 11:55:38 -070034#include "iwl-dev.h"
Emmanuel Grumbach6974e362008-04-14 21:16:06 -070035#include "iwl-core.h"
36#include "iwl-sta.h"
Tomas Winkler7a999bf2008-05-29 16:35:02 +080037
Tomas Winkler947b13a2008-04-16 16:34:48 -070038u8 iwl_find_station(struct iwl_priv *priv, const u8 *addr)
39{
40 int i;
41 int start = 0;
42 int ret = IWL_INVALID_STATION;
43 unsigned long flags;
Tomas Winkler947b13a2008-04-16 16:34:48 -070044
Johannes Berg05c914f2008-09-11 00:01:58 +020045 if ((priv->iw_mode == NL80211_IFTYPE_ADHOC) ||
46 (priv->iw_mode == NL80211_IFTYPE_AP))
Tomas Winkler947b13a2008-04-16 16:34:48 -070047 start = IWL_STA_ID;
48
49 if (is_broadcast_ether_addr(addr))
50 return priv->hw_params.bcast_sta_id;
51
52 spin_lock_irqsave(&priv->sta_lock, flags);
53 for (i = start; i < priv->hw_params.max_stations; i++)
54 if (priv->stations[i].used &&
55 (!compare_ether_addr(priv->stations[i].sta.sta.addr,
56 addr))) {
57 ret = i;
58 goto out;
59 }
60
Tomas Winklere1623442009-01-27 14:27:56 -080061 IWL_DEBUG_ASSOC_LIMIT(priv, "can not find STA %pM total %d\n",
Johannes Berge1749612008-10-27 15:59:26 -070062 addr, priv->num_stations);
Tomas Winkler947b13a2008-04-16 16:34:48 -070063
64 out:
Reinette Chatrefe6b23d2010-02-22 16:24:47 -080065 /*
66 * It may be possible that more commands interacting with stations
67 * arrive before we completed processing the adding of
68 * station
69 */
70 if (ret != IWL_INVALID_STATION &&
71 (!(priv->stations[ret].used & IWL_STA_UCODE_ACTIVE) ||
72 ((priv->stations[ret].used & IWL_STA_UCODE_ACTIVE) &&
73 (priv->stations[ret].used & IWL_STA_UCODE_INPROGRESS)))) {
74 IWL_ERR(priv, "Requested station info for sta %d before ready. \n",
75 ret);
76 ret = IWL_INVALID_STATION;
77 }
Tomas Winkler947b13a2008-04-16 16:34:48 -070078 spin_unlock_irqrestore(&priv->sta_lock, flags);
79 return ret;
80}
81EXPORT_SYMBOL(iwl_find_station);
82
Emmanuel Grumbachbe1f3ab62008-06-12 09:47:18 +080083int iwl_get_ra_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
84{
Johannes Berg05c914f2008-09-11 00:01:58 +020085 if (priv->iw_mode == NL80211_IFTYPE_STATION) {
Emmanuel Grumbachbe1f3ab62008-06-12 09:47:18 +080086 return IWL_AP_ID;
87 } else {
88 u8 *da = ieee80211_get_DA(hdr);
Tomas Winklerc587de02009-06-03 11:44:07 -070089 return iwl_find_station(priv, da);
Emmanuel Grumbachbe1f3ab62008-06-12 09:47:18 +080090 }
91}
92EXPORT_SYMBOL(iwl_get_ra_sta_id);
93
Reinette Chatre1fa97aa2010-01-22 14:22:48 -080094/* priv->sta_lock must be held */
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +080095static void iwl_sta_ucode_activate(struct iwl_priv *priv, u8 sta_id)
96{
Reinette Chatre1fa97aa2010-01-22 14:22:48 -080097
98 if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE))
99 IWL_ERR(priv, "ACTIVATE a non DRIVER active station id %u addr %pM\n",
100 sta_id, priv->stations[sta_id].sta.sta.addr);
101
102 if (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE) {
103 IWL_DEBUG_ASSOC(priv,
104 "STA id %u addr %pM already present in uCode (according to driver)\n",
105 sta_id, priv->stations[sta_id].sta.sta.addr);
106 } else {
107 priv->stations[sta_id].used |= IWL_STA_UCODE_ACTIVE;
108 IWL_DEBUG_ASSOC(priv, "Added STA id %u addr %pM to uCode\n",
109 sta_id, priv->stations[sta_id].sta.sta.addr);
110 }
111}
112
113static void iwl_process_add_sta_resp(struct iwl_priv *priv,
114 struct iwl_addsta_cmd *addsta,
115 struct iwl_rx_packet *pkt,
116 bool sync)
117{
118 u8 sta_id = addsta->sta.sta_id;
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800119 unsigned long flags;
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800120
Reinette Chatre1fa97aa2010-01-22 14:22:48 -0800121 if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
122 IWL_ERR(priv, "Bad return from REPLY_ADD_STA (0x%08X)\n",
123 pkt->hdr.flags);
124 return;
125 }
126
127 IWL_DEBUG_INFO(priv, "Processing response for adding station %u\n",
128 sta_id);
129
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800130 spin_lock_irqsave(&priv->sta_lock, flags);
131
Reinette Chatre1fa97aa2010-01-22 14:22:48 -0800132 switch (pkt->u.add_sta.status) {
133 case ADD_STA_SUCCESS_MSK:
134 IWL_DEBUG_INFO(priv, "REPLY_ADD_STA PASSED\n");
135 iwl_sta_ucode_activate(priv, sta_id);
136 break;
137 case ADD_STA_NO_ROOM_IN_TABLE:
138 IWL_ERR(priv, "Adding station %d failed, no room in table.\n",
Winkler, Tomas15b16872008-12-19 10:37:33 +0800139 sta_id);
Reinette Chatre1fa97aa2010-01-22 14:22:48 -0800140 break;
141 case ADD_STA_NO_BLOCK_ACK_RESOURCE:
142 IWL_ERR(priv, "Adding station %d failed, no block ack resource.\n",
143 sta_id);
144 break;
145 case ADD_STA_MODIFY_NON_EXIST_STA:
146 IWL_ERR(priv, "Attempting to modify non-existing station %d \n",
147 sta_id);
148 break;
149 default:
150 IWL_DEBUG_ASSOC(priv, "Received REPLY_ADD_STA:(0x%08X)\n",
151 pkt->u.add_sta.status);
152 break;
153 }
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800154
Reinette Chatre1fa97aa2010-01-22 14:22:48 -0800155 IWL_DEBUG_INFO(priv, "%s station id %u addr %pM\n",
156 priv->stations[sta_id].sta.mode ==
157 STA_CONTROL_MODIFY_MSK ? "Modified" : "Added",
158 sta_id, priv->stations[sta_id].sta.sta.addr);
159
160 /*
161 * XXX: The MAC address in the command buffer is often changed from
162 * the original sent to the device. That is, the MAC address
163 * written to the command buffer often is not the same MAC adress
164 * read from the command buffer when the command returns. This
165 * issue has not yet been resolved and this debugging is left to
166 * observe the problem.
167 */
168 IWL_DEBUG_INFO(priv, "%s station according to cmd buffer %pM\n",
169 priv->stations[sta_id].sta.mode ==
170 STA_CONTROL_MODIFY_MSK ? "Modified" : "Added",
171 addsta->sta.addr);
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800172 spin_unlock_irqrestore(&priv->sta_lock, flags);
173}
174
Johannes Berg5696aea2009-07-24 11:13:06 -0700175static void iwl_add_sta_callback(struct iwl_priv *priv,
176 struct iwl_device_cmd *cmd,
Zhu Yi2f301222009-10-09 17:19:45 +0800177 struct iwl_rx_packet *pkt)
Tomas Winkler42132bc2008-05-29 16:35:03 +0800178{
Tomas Winkler3257e5d2008-10-14 12:32:43 -0700179 struct iwl_addsta_cmd *addsta =
180 (struct iwl_addsta_cmd *)cmd->cmd.payload;
Tomas Winkler42132bc2008-05-29 16:35:03 +0800181
Reinette Chatre1fa97aa2010-01-22 14:22:48 -0800182 iwl_process_add_sta_resp(priv, addsta, pkt, false);
Tomas Winkler42132bc2008-05-29 16:35:03 +0800183
Tomas Winkler42132bc2008-05-29 16:35:03 +0800184}
185
Samuel Ortiz17f841c2009-01-23 13:45:20 -0800186int iwl_send_add_sta(struct iwl_priv *priv,
Tomas Winkler133636d2008-05-05 10:22:34 +0800187 struct iwl_addsta_cmd *sta, u8 flags)
188{
Zhu Yi2f301222009-10-09 17:19:45 +0800189 struct iwl_rx_packet *pkt = NULL;
Tomas Winkler133636d2008-05-05 10:22:34 +0800190 int ret = 0;
191 u8 data[sizeof(*sta)];
192 struct iwl_host_cmd cmd = {
193 .id = REPLY_ADD_STA,
Johannes Bergc2acea82009-07-24 11:13:05 -0700194 .flags = flags,
Tomas Winkler133636d2008-05-05 10:22:34 +0800195 .data = data,
196 };
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800197 u8 sta_id = sta->sta.sta_id;
198
199 IWL_DEBUG_INFO(priv, "Adding sta %u (%pM) %ssynchronously\n",
200 sta_id, sta->sta.addr, flags & CMD_ASYNC ? "a" : "");
Tomas Winkler133636d2008-05-05 10:22:34 +0800201
Tomas Winkler42132bc2008-05-29 16:35:03 +0800202 if (flags & CMD_ASYNC)
Johannes Bergc2acea82009-07-24 11:13:05 -0700203 cmd.callback = iwl_add_sta_callback;
Tomas Winkler42132bc2008-05-29 16:35:03 +0800204 else
Johannes Bergc2acea82009-07-24 11:13:05 -0700205 cmd.flags |= CMD_WANT_SKB;
Tomas Winkler133636d2008-05-05 10:22:34 +0800206
207 cmd.len = priv->cfg->ops->utils->build_addsta_hcmd(sta, data);
208 ret = iwl_send_cmd(priv, &cmd);
209
210 if (ret || (flags & CMD_ASYNC))
211 return ret;
212
Tomas Winkler133636d2008-05-05 10:22:34 +0800213 if (ret == 0) {
Reinette Chatre1fa97aa2010-01-22 14:22:48 -0800214 pkt = (struct iwl_rx_packet *)cmd.reply_page;
215 iwl_process_add_sta_resp(priv, sta, pkt, true);
Tomas Winkler133636d2008-05-05 10:22:34 +0800216 }
Zhu Yi64a76b52009-12-10 14:37:21 -0800217 iwl_free_pages(priv, cmd.reply_page);
Tomas Winkler133636d2008-05-05 10:22:34 +0800218
219 return ret;
220}
Samuel Ortiz17f841c2009-01-23 13:45:20 -0800221EXPORT_SYMBOL(iwl_send_add_sta);
Tomas Winkler947b13a2008-04-16 16:34:48 -0700222
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800223static void iwl_set_ht_add_station(struct iwl_priv *priv, u8 index,
Johannes Bergd9fe60d2008-10-09 12:13:49 +0200224 struct ieee80211_sta_ht_cap *sta_ht_inf)
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800225{
226 __le32 sta_flags;
227 u8 mimo_ps_mode;
228
229 if (!sta_ht_inf || !sta_ht_inf->ht_supported)
230 goto done;
231
Tomas Winkler00c5ae22008-09-03 11:26:42 +0800232 mimo_ps_mode = (sta_ht_inf->cap & IEEE80211_HT_CAP_SM_PS) >> 2;
Wey-Yi Guy3f3e0372009-10-30 14:36:17 -0700233 IWL_DEBUG_ASSOC(priv, "spatial multiplexing power save mode: %s\n",
234 (mimo_ps_mode == WLAN_HT_CAP_SM_PS_STATIC) ?
235 "static" :
236 (mimo_ps_mode == WLAN_HT_CAP_SM_PS_DYNAMIC) ?
237 "dynamic" : "disabled");
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800238
239 sta_flags = priv->stations[index].sta.station_flags;
240
241 sta_flags &= ~(STA_FLG_RTS_MIMO_PROT_MSK | STA_FLG_MIMO_DIS_MSK);
242
243 switch (mimo_ps_mode) {
Tomas Winkler00c5ae22008-09-03 11:26:42 +0800244 case WLAN_HT_CAP_SM_PS_STATIC:
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800245 sta_flags |= STA_FLG_MIMO_DIS_MSK;
246 break;
Tomas Winkler00c5ae22008-09-03 11:26:42 +0800247 case WLAN_HT_CAP_SM_PS_DYNAMIC:
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800248 sta_flags |= STA_FLG_RTS_MIMO_PROT_MSK;
249 break;
Tomas Winkler00c5ae22008-09-03 11:26:42 +0800250 case WLAN_HT_CAP_SM_PS_DISABLED:
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800251 break;
252 default:
Winkler, Tomas39aadf82008-12-19 10:37:32 +0800253 IWL_WARN(priv, "Invalid MIMO PS mode %d\n", mimo_ps_mode);
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800254 break;
255 }
256
257 sta_flags |= cpu_to_le32(
258 (u32)sta_ht_inf->ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS);
259
260 sta_flags |= cpu_to_le32(
261 (u32)sta_ht_inf->ampdu_density << STA_FLG_AGG_MPDU_DENSITY_POS);
262
Wey-Yi Guy7aafef12009-08-07 15:41:38 -0700263 if (iwl_is_ht40_tx_allowed(priv, sta_ht_inf))
264 sta_flags |= STA_FLG_HT40_EN_MSK;
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800265 else
Wey-Yi Guy7aafef12009-08-07 15:41:38 -0700266 sta_flags &= ~STA_FLG_HT40_EN_MSK;
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800267
268 priv->stations[index].sta.station_flags = sta_flags;
269 done:
270 return;
271}
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800272
273/**
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800274 * iwl_prep_station - Prepare station information for addition
275 *
276 * should be called with sta_lock held
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800277 */
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800278static u8 iwl_prep_station(struct iwl_priv *priv, const u8 *addr,
279 bool is_ap,
280 struct ieee80211_sta_ht_cap *ht_info)
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800281{
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800282 struct iwl_station_entry *station;
Tomas Winklerc587de02009-06-03 11:44:07 -0700283 int i;
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800284 u8 sta_id = IWL_INVALID_STATION;
Tomas Winklerc587de02009-06-03 11:44:07 -0700285 u16 rate;
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800286
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800287 if (is_ap)
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800288 sta_id = IWL_AP_ID;
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800289 else if (is_broadcast_ether_addr(addr))
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800290 sta_id = priv->hw_params.bcast_sta_id;
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800291 else
292 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++) {
293 if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
294 addr)) {
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800295 sta_id = i;
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800296 break;
297 }
298
299 if (!priv->stations[i].used &&
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800300 sta_id == IWL_INVALID_STATION)
301 sta_id = i;
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800302 }
303
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800304 /*
305 * These two conditions have the same outcome, but keep them
306 * separate
307 */
308 if (unlikely(sta_id == IWL_INVALID_STATION))
309 return sta_id;
310
311 /*
312 * uCode is not able to deal with multiple requests to add a
313 * station. Keep track if one is in progress so that we do not send
314 * another.
315 */
316 if (priv->stations[sta_id].used & IWL_STA_UCODE_INPROGRESS) {
317 IWL_DEBUG_INFO(priv, "STA %d already in process of being added.\n",
318 sta_id);
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800319 return sta_id;
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800320 }
321
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800322 if ((priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE) &&
323 (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE) &&
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800324 !compare_ether_addr(priv->stations[sta_id].sta.sta.addr, addr)) {
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800325 IWL_DEBUG_ASSOC(priv, "STA %d (%pM) already added, not adding again.\n",
326 sta_id, addr);
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800327 return sta_id;
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800328 }
329
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800330 station = &priv->stations[sta_id];
331 station->used = IWL_STA_DRIVER_ACTIVE;
Tomas Winklere1623442009-01-27 14:27:56 -0800332 IWL_DEBUG_ASSOC(priv, "Add STA to driver ID %d: %pM\n",
Johannes Berge1749612008-10-27 15:59:26 -0700333 sta_id, addr);
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800334 priv->num_stations++;
335
336 /* Set up the REPLY_ADD_STA command to send to device */
337 memset(&station->sta, 0, sizeof(struct iwl_addsta_cmd));
338 memcpy(station->sta.sta.addr, addr, ETH_ALEN);
339 station->sta.mode = 0;
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800340 station->sta.sta.sta_id = sta_id;
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800341 station->sta.station_flags = 0;
342
343 /* BCAST station and IBSS stations do not work in HT mode */
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800344 if (sta_id != priv->hw_params.bcast_sta_id &&
Johannes Berg05c914f2008-09-11 00:01:58 +0200345 priv->iw_mode != NL80211_IFTYPE_ADHOC)
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800346 iwl_set_ht_add_station(priv, sta_id, ht_info);
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800347
Tomas Winklerc587de02009-06-03 11:44:07 -0700348 /* 3945 only */
349 rate = (priv->band == IEEE80211_BAND_5GHZ) ?
350 IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP;
351 /* Turn on both antennas for the station... */
352 station->sta.rate_n_flags = cpu_to_le16(rate | RATE_MCS_ANT_AB_MSK);
353
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800354 return sta_id;
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800355
356}
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800357
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800358#define STA_WAIT_TIMEOUT (HZ/2)
359
360/**
361 * iwl_add_station_common -
362 */
363int iwl_add_station_common(struct iwl_priv *priv, const u8 *addr,
364 bool is_ap,
365 struct ieee80211_sta_ht_cap *ht_info,
366 u8 *sta_id_r)
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800367{
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800368 struct iwl_station_entry *station;
369 unsigned long flags_spin;
370 int ret = 0;
371 u8 sta_id;
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800372
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800373 *sta_id_r = 0;
374 spin_lock_irqsave(&priv->sta_lock, flags_spin);
375 sta_id = iwl_prep_station(priv, addr, is_ap, ht_info);
376 if (sta_id == IWL_INVALID_STATION) {
377 IWL_ERR(priv, "Unable to prepare station %pM for addition\n",
378 addr);
379 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
380 return -EINVAL;
381 }
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800382
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800383 /*
384 * uCode is not able to deal with multiple requests to add a
385 * station. Keep track if one is in progress so that we do not send
386 * another.
387 */
388 if (priv->stations[sta_id].used & IWL_STA_UCODE_INPROGRESS) {
389 IWL_DEBUG_INFO(priv, "STA %d already in process of being added.\n",
390 sta_id);
391 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
392 return -EEXIST;
393 }
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800394
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800395 if ((priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE) &&
396 (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) {
397 IWL_DEBUG_ASSOC(priv, "STA %d (%pM) already added, not adding again.\n",
398 sta_id, addr);
399 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
400 return -EEXIST;
401 }
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800402
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800403 priv->stations[sta_id].used |= IWL_STA_UCODE_INPROGRESS;
404 station = &priv->stations[sta_id];
405 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
406
407 /* Add station to device's station table */
408 ret = iwl_send_add_sta(priv, &station->sta, CMD_SYNC);
409 if (ret) {
410 IWL_ERR(priv, "Adding station %pM failed.\n", station->sta.sta.addr);
411 spin_lock_irqsave(&priv->sta_lock, flags_spin);
412 priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE;
413 priv->stations[sta_id].used &= ~IWL_STA_UCODE_INPROGRESS;
414 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
415 }
416 *sta_id_r = sta_id;
417 return ret;
418}
419EXPORT_SYMBOL(iwl_add_station_common);
420
421static void iwl_sta_init_lq(struct iwl_priv *priv, const u8 *addr, bool is_ap)
422{
423 int i, r;
424 struct iwl_link_quality_cmd link_cmd = {
425 .reserved1 = 0,
426 };
427 u32 rate_flags;
428
429 /* Set up the rate scaling to start at selected rate, fall back
430 * all the way down to 1M in IEEE order, and then spin on 1M */
431 if (is_ap)
432 r = IWL_RATE_54M_INDEX;
433 else if (priv->band == IEEE80211_BAND_5GHZ)
434 r = IWL_RATE_6M_INDEX;
435 else
436 r = IWL_RATE_1M_INDEX;
437
438 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) {
439 rate_flags = 0;
440 if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE)
441 rate_flags |= RATE_MCS_CCK_MSK;
442
443 rate_flags |= first_antenna(priv->hw_params.valid_tx_ant) <<
444 RATE_MCS_ANT_POS;
445
446 link_cmd.rs_table[i].rate_n_flags =
447 iwl_hw_set_rate_n_flags(iwl_rates[r].plcp, rate_flags);
448 r = iwl_get_prev_ieee_rate(r);
449 }
450
451 link_cmd.general_params.single_stream_ant_msk =
452 first_antenna(priv->hw_params.valid_tx_ant);
453 link_cmd.general_params.dual_stream_ant_msk = 3;
454 link_cmd.agg_params.agg_dis_start_th = LINK_QUAL_AGG_DISABLE_START_DEF;
455 link_cmd.agg_params.agg_time_limit =
456 cpu_to_le16(LINK_QUAL_AGG_TIME_LIMIT_DEF);
457
458 /* Update the rate scaling for control frame Tx to AP */
459 link_cmd.sta_id = is_ap ? IWL_AP_ID : priv->hw_params.bcast_sta_id;
460
461 iwl_send_cmd_pdu(priv, REPLY_TX_LINK_QUALITY_CMD,
462 sizeof(link_cmd), &link_cmd);
463}
464
465/*
466 * iwl_add_local_stations - Add stations not requested by mac80211
467 *
468 * This will be either the broadcast station or the bssid station needed by
469 * ad-hoc.
470 *
471 * Function sleeps.
472 */
473int iwl_add_local_station(struct iwl_priv *priv, const u8 *addr, bool init_rs)
474{
475 int ret;
476 u8 sta_id;
477
478 ret = iwl_add_station_common(priv, addr, 0, NULL, &sta_id);
479 if (ret) {
480 IWL_ERR(priv, "Unable to add station %pM\n", addr);
481 return ret;
482 }
483
484 if (init_rs)
485 /* Set up default rate scaling table in device's station table */
486 iwl_sta_init_lq(priv, addr, false);
487 return 0;
488}
489EXPORT_SYMBOL(iwl_add_local_station);
490
491/**
492 * iwl_sta_ucode_deactivate - deactivate ucode status for a station
493 *
494 * priv->sta_lock must be held
495 */
496static void iwl_sta_ucode_deactivate(struct iwl_priv *priv, u8 sta_id)
497{
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800498 /* Ucode must be active and driver must be non active */
499 if (priv->stations[sta_id].used != IWL_STA_UCODE_ACTIVE)
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800500 IWL_ERR(priv, "removed non active STA %u\n", sta_id);
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800501
502 priv->stations[sta_id].used &= ~IWL_STA_UCODE_ACTIVE;
503
504 memset(&priv->stations[sta_id], 0, sizeof(struct iwl_station_entry));
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800505 IWL_DEBUG_ASSOC(priv, "Removed STA %u\n", sta_id);
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800506}
507
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800508static int iwl_send_remove_station(struct iwl_priv *priv,
509 struct iwl_station_entry *station)
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800510{
Zhu Yi2f301222009-10-09 17:19:45 +0800511 struct iwl_rx_packet *pkt;
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800512 int ret;
513
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800514 unsigned long flags_spin;
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800515 struct iwl_rem_sta_cmd rm_sta_cmd;
516
517 struct iwl_host_cmd cmd = {
518 .id = REPLY_REMOVE_STA,
519 .len = sizeof(struct iwl_rem_sta_cmd),
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800520 .flags = CMD_SYNC,
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800521 .data = &rm_sta_cmd,
522 };
523
524 memset(&rm_sta_cmd, 0, sizeof(rm_sta_cmd));
525 rm_sta_cmd.num_sta = 1;
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800526 memcpy(&rm_sta_cmd.addr, &station->sta.sta.addr , ETH_ALEN);
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800527
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800528 cmd.flags |= CMD_WANT_SKB;
529
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800530 ret = iwl_send_cmd(priv, &cmd);
531
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800532 if (ret)
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800533 return ret;
534
Zhu Yi2f301222009-10-09 17:19:45 +0800535 pkt = (struct iwl_rx_packet *)cmd.reply_page;
536 if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
Winkler, Tomas15b16872008-12-19 10:37:33 +0800537 IWL_ERR(priv, "Bad return from REPLY_REMOVE_STA (0x%08X)\n",
Zhu Yi2f301222009-10-09 17:19:45 +0800538 pkt->hdr.flags);
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800539 ret = -EIO;
540 }
541
542 if (!ret) {
Zhu Yi2f301222009-10-09 17:19:45 +0800543 switch (pkt->u.rem_sta.status) {
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800544 case REM_STA_SUCCESS_MSK:
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800545 spin_lock_irqsave(&priv->sta_lock, flags_spin);
546 iwl_sta_ucode_deactivate(priv, station->sta.sta.sta_id);
547 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
Tomas Winklere1623442009-01-27 14:27:56 -0800548 IWL_DEBUG_ASSOC(priv, "REPLY_REMOVE_STA PASSED\n");
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800549 break;
550 default:
551 ret = -EIO;
Winkler, Tomas15b16872008-12-19 10:37:33 +0800552 IWL_ERR(priv, "REPLY_REMOVE_STA failed\n");
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800553 break;
554 }
555 }
Zhu Yi64a76b52009-12-10 14:37:21 -0800556 iwl_free_pages(priv, cmd.reply_page);
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800557
558 return ret;
559}
Emmanuel Grumbachbe1f3ab62008-06-12 09:47:18 +0800560
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800561/**
562 * iwl_remove_station - Remove driver's knowledge of station.
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800563 */
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800564static int iwl_remove_station(struct iwl_priv *priv, struct ieee80211_sta *sta)
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800565{
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800566 int sta_id = IWL_INVALID_STATION;
567 int i, ret = -EINVAL;
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800568 unsigned long flags;
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800569 bool is_ap = priv->iw_mode == NL80211_IFTYPE_STATION;
570 struct iwl_station_entry *station;
571
572 if (!iwl_is_ready(priv)) {
573 IWL_DEBUG_INFO(priv,
574 "Unable to remove station %pM, device not ready. \n",
575 sta->addr);
576 /*
577 * It is typical for stations to be removed when we are
578 * going down. Return success since device will be down
579 * soon anyway
580 */
581 return 0;
582 }
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800583
584 spin_lock_irqsave(&priv->sta_lock, flags);
585
586 if (is_ap)
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800587 sta_id = IWL_AP_ID;
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800588 else
589 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++)
590 if (priv->stations[i].used &&
591 !compare_ether_addr(priv->stations[i].sta.sta.addr,
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800592 sta->addr)) {
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800593 sta_id = i;
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800594 break;
595 }
596
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800597 if (unlikely(sta_id == IWL_INVALID_STATION))
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800598 goto out;
599
Tomas Winklere1623442009-01-27 14:27:56 -0800600 IWL_DEBUG_ASSOC(priv, "Removing STA from driver:%d %pM\n",
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800601 sta_id, sta->addr);
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800602
603 if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) {
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800604 IWL_DEBUG_INFO(priv, "Removing %pM but non DRIVER active\n",
605 sta->addr);
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800606 goto out;
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800607 }
608
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800609 if (!(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) {
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800610 IWL_DEBUG_INFO(priv, "Removing %pM but non UCODE active\n",
611 sta->addr);
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800612 goto out;
613 }
614
615
616 priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE;
617
618 priv->num_stations--;
619
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800620 BUG_ON(priv->num_stations < 0);
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800621
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800622 station = &priv->stations[sta_id];
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800623 spin_unlock_irqrestore(&priv->sta_lock, flags);
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800624
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800625 ret = iwl_send_remove_station(priv, station);
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800626 return ret;
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800627out:
628 spin_unlock_irqrestore(&priv->sta_lock, flags);
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800629 return ret;
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800630}
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800631
Winkler, Tomas83dde8c2008-11-19 15:32:23 -0800632/**
Reinette Chatre7e246192010-02-18 22:58:32 -0800633 * iwl_clear_ucode_stations() - clear entire station table driver and/or ucode
634 * @priv:
635 * @force: If set then the uCode station table needs to be cleared here. If
636 * not set then the uCode station table has already been cleared,
637 * for example after sending it a RXON command without ASSOC bit
638 * set, and we just need to change driver state here.
Winkler, Tomas83dde8c2008-11-19 15:32:23 -0800639 */
Reinette Chatre7e246192010-02-18 22:58:32 -0800640void iwl_clear_ucode_stations(struct iwl_priv *priv, bool force)
Winkler, Tomas83dde8c2008-11-19 15:32:23 -0800641{
Mohamed Abbas48676eb2009-03-11 11:17:59 -0700642 int i;
Reinette Chatre7e246192010-02-18 22:58:32 -0800643 unsigned long flags_spin;
644 bool cleared = false;
Winkler, Tomas83dde8c2008-11-19 15:32:23 -0800645
Reinette Chatre7e246192010-02-18 22:58:32 -0800646 IWL_DEBUG_INFO(priv, "Clearing ucode stations in driver%s\n",
647 force ? " and ucode" : "");
Winkler, Tomas83dde8c2008-11-19 15:32:23 -0800648
Reinette Chatre7e246192010-02-18 22:58:32 -0800649 if (force) {
650 if (!iwl_is_ready(priv)) {
651 /*
652 * If device is not ready at this point the station
653 * table is likely already empty (uCode not ready
654 * to receive station requests) or will soon be
655 * due to interface going down.
656 */
657 IWL_DEBUG_INFO(priv, "Unable to remove stations from device - device not ready\n");
658 } else {
659 iwl_send_cmd_pdu_async(priv, REPLY_REMOVE_ALL_STA, 0, NULL, NULL);
660 }
Mohamed Abbas48676eb2009-03-11 11:17:59 -0700661 }
662
Reinette Chatre7e246192010-02-18 22:58:32 -0800663 spin_lock_irqsave(&priv->sta_lock, flags_spin);
664 if (force) {
665 IWL_DEBUG_INFO(priv, "Clearing all station information in driver\n");
666 priv->num_stations = 0;
667 memset(priv->stations, 0, sizeof(priv->stations));
668 } else {
669 for (i = 0; i < priv->hw_params.max_stations; i++) {
670 if (priv->stations[i].used & IWL_STA_UCODE_ACTIVE) {
671 IWL_DEBUG_INFO(priv, "Clearing ucode active for station %d \n", i);
672 priv->stations[i].used &= ~IWL_STA_UCODE_ACTIVE;
673 cleared = true;
674 }
675 }
676 }
677 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
678
679 if (!cleared)
680 IWL_DEBUG_INFO(priv, "No active stations found to be cleared\n");
Winkler, Tomas83dde8c2008-11-19 15:32:23 -0800681}
Reinette Chatre7e246192010-02-18 22:58:32 -0800682EXPORT_SYMBOL(iwl_clear_ucode_stations);
683
684/**
685 * iwl_restore_stations() - Restore driver known stations to device
686 *
687 * All stations considered active by driver, but not present in ucode, is
688 * restored.
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800689 *
690 * Function sleeps.
Reinette Chatre7e246192010-02-18 22:58:32 -0800691 */
692void iwl_restore_stations(struct iwl_priv *priv)
693{
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800694 struct iwl_station_entry *station;
Reinette Chatre7e246192010-02-18 22:58:32 -0800695 unsigned long flags_spin;
696 int i;
697 bool found = false;
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800698 int ret;
Reinette Chatre7e246192010-02-18 22:58:32 -0800699
700 if (!iwl_is_ready(priv)) {
701 IWL_DEBUG_INFO(priv, "Not ready yet, not restoring any stations.\n");
702 return;
703 }
704
705 IWL_DEBUG_ASSOC(priv, "Restoring all known stations ... start.\n");
706 spin_lock_irqsave(&priv->sta_lock, flags_spin);
707 for (i = 0; i < priv->hw_params.max_stations; i++) {
708 if ((priv->stations[i].used & IWL_STA_DRIVER_ACTIVE) &&
709 !(priv->stations[i].used & IWL_STA_UCODE_ACTIVE)) {
710 IWL_DEBUG_ASSOC(priv, "Restoring sta %pM\n",
711 priv->stations[i].sta.sta.addr);
712 priv->stations[i].sta.mode = 0;
713 priv->stations[i].used |= IWL_STA_UCODE_INPROGRESS;
714 found = true;
715 }
716 }
717
718 for (i = 0; i < priv->hw_params.max_stations; i++) {
719 if ((priv->stations[i].used & IWL_STA_UCODE_INPROGRESS)) {
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800720 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
721 station = &priv->stations[i];
722 ret = iwl_send_add_sta(priv, &priv->stations[i].sta, CMD_SYNC);
723 if (ret) {
724 IWL_ERR(priv, "Adding station %pM failed.\n",
725 station->sta.sta.addr);
726 spin_lock_irqsave(&priv->sta_lock, flags_spin);
727 priv->stations[i].used &= ~IWL_STA_DRIVER_ACTIVE;
728 priv->stations[i].used &= ~IWL_STA_UCODE_INPROGRESS;
729 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
730 }
731 /*
732 * Rate scaling has already been initialized, send
733 * current LQ command
734 */
735 if (station->lq)
736 iwl_send_lq_cmd(priv, station->lq, CMD_SYNC, true);
737 spin_lock_irqsave(&priv->sta_lock, flags_spin);
Reinette Chatre7e246192010-02-18 22:58:32 -0800738 priv->stations[i].used &= ~IWL_STA_UCODE_INPROGRESS;
739 }
740 }
741
742 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
743 if (!found)
744 IWL_DEBUG_INFO(priv, "Restoring all known stations .... no stations to be restored.\n");
745 else
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800746 IWL_DEBUG_INFO(priv, "Restoring all known stations .... complete.\n");
Reinette Chatre7e246192010-02-18 22:58:32 -0800747}
748EXPORT_SYMBOL(iwl_restore_stations);
Winkler, Tomas83dde8c2008-11-19 15:32:23 -0800749
Abhijeet Kolekar6e21f152009-02-27 16:21:21 -0800750int iwl_get_free_ucode_key_index(struct iwl_priv *priv)
Emmanuel Grumbach80fb47a2008-04-14 21:16:08 -0700751{
752 int i;
753
754 for (i = 0; i < STA_KEY_MAX_NUM; i++)
Emmanuel Grumbach77bab602008-04-15 16:01:44 -0700755 if (!test_and_set_bit(i, &priv->ucode_key_table))
Emmanuel Grumbach80fb47a2008-04-14 21:16:08 -0700756 return i;
757
Tomas Winkler40a9a822008-11-25 23:29:03 +0200758 return WEP_INVALID_OFFSET;
Emmanuel Grumbach80fb47a2008-04-14 21:16:08 -0700759}
Abhijeet Kolekar6e21f152009-02-27 16:21:21 -0800760EXPORT_SYMBOL(iwl_get_free_ucode_key_index);
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700761
762int iwl_send_static_wepkey_cmd(struct iwl_priv *priv, u8 send_if_empty)
763{
764 int i, not_empty = 0;
765 u8 buff[sizeof(struct iwl_wep_cmd) +
766 sizeof(struct iwl_wep_key) * WEP_KEYS_MAX];
767 struct iwl_wep_cmd *wep_cmd = (struct iwl_wep_cmd *)buff;
768 size_t cmd_size = sizeof(struct iwl_wep_cmd);
769 struct iwl_host_cmd cmd = {
770 .id = REPLY_WEPKEY,
771 .data = wep_cmd,
Johannes Berg72e15d72010-02-19 11:42:32 -0800772 .flags = CMD_SYNC,
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700773 };
774
Johannes Berg72e15d72010-02-19 11:42:32 -0800775 might_sleep();
776
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700777 memset(wep_cmd, 0, cmd_size +
778 (sizeof(struct iwl_wep_key) * WEP_KEYS_MAX));
779
780 for (i = 0; i < WEP_KEYS_MAX ; i++) {
781 wep_cmd->key[i].key_index = i;
782 if (priv->wep_keys[i].key_size) {
783 wep_cmd->key[i].key_offset = i;
784 not_empty = 1;
785 } else {
786 wep_cmd->key[i].key_offset = WEP_INVALID_OFFSET;
787 }
788
789 wep_cmd->key[i].key_size = priv->wep_keys[i].key_size;
790 memcpy(&wep_cmd->key[i].key[3], priv->wep_keys[i].key,
791 priv->wep_keys[i].key_size);
792 }
793
794 wep_cmd->global_key_type = WEP_KEY_WEP_TYPE;
795 wep_cmd->num_keys = WEP_KEYS_MAX;
796
797 cmd_size += sizeof(struct iwl_wep_key) * WEP_KEYS_MAX;
798
799 cmd.len = cmd_size;
800
801 if (not_empty || send_if_empty)
802 return iwl_send_cmd(priv, &cmd);
803 else
804 return 0;
805}
Tomas Winkler27aaba02008-05-05 10:22:44 +0800806EXPORT_SYMBOL(iwl_send_static_wepkey_cmd);
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700807
808int iwl_remove_default_wep_key(struct iwl_priv *priv,
Emmanuel Grumbach80fb47a2008-04-14 21:16:08 -0700809 struct ieee80211_key_conf *keyconf)
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700810{
811 int ret;
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700812
Johannes Berg72e15d72010-02-19 11:42:32 -0800813 WARN_ON(!mutex_is_locked(&priv->mutex));
814
Reinette Chatre2d1bb9e2009-07-17 09:30:18 -0700815 IWL_DEBUG_WEP(priv, "Removing default WEP key: idx=%d\n",
816 keyconf->keyidx);
Emmanuel Grumbach80fb47a2008-04-14 21:16:08 -0700817
818 if (!test_and_clear_bit(keyconf->keyidx, &priv->ucode_key_table))
Winkler, Tomas15b16872008-12-19 10:37:33 +0800819 IWL_ERR(priv, "index %d not used in uCode key table.\n",
Emmanuel Grumbach80fb47a2008-04-14 21:16:08 -0700820 keyconf->keyidx);
821
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700822 priv->default_wep_key--;
Emmanuel Grumbach80fb47a2008-04-14 21:16:08 -0700823 memset(&priv->wep_keys[keyconf->keyidx], 0, sizeof(priv->wep_keys[0]));
Reinette Chatre2d1bb9e2009-07-17 09:30:18 -0700824 if (iwl_is_rfkill(priv)) {
825 IWL_DEBUG_WEP(priv, "Not sending REPLY_WEPKEY command due to RFKILL.\n");
Johannes Berg72e15d72010-02-19 11:42:32 -0800826 /* but keys in device are clear anyway so return success */
Reinette Chatre2d1bb9e2009-07-17 09:30:18 -0700827 return 0;
828 }
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700829 ret = iwl_send_static_wepkey_cmd(priv, 1);
Tomas Winklere1623442009-01-27 14:27:56 -0800830 IWL_DEBUG_WEP(priv, "Remove default WEP key: idx=%d ret=%d\n",
Emmanuel Grumbach4564ce82008-06-12 09:47:09 +0800831 keyconf->keyidx, ret);
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700832
833 return ret;
834}
Tomas Winkler27aaba02008-05-05 10:22:44 +0800835EXPORT_SYMBOL(iwl_remove_default_wep_key);
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700836
837int iwl_set_default_wep_key(struct iwl_priv *priv,
838 struct ieee80211_key_conf *keyconf)
839{
840 int ret;
Johannes Berg72e15d72010-02-19 11:42:32 -0800841
842 WARN_ON(!mutex_is_locked(&priv->mutex));
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700843
Emmanuel Grumbach4564ce82008-06-12 09:47:09 +0800844 if (keyconf->keylen != WEP_KEY_LEN_128 &&
845 keyconf->keylen != WEP_KEY_LEN_64) {
Tomas Winklere1623442009-01-27 14:27:56 -0800846 IWL_DEBUG_WEP(priv, "Bad WEP key length %d\n", keyconf->keylen);
Emmanuel Grumbach4564ce82008-06-12 09:47:09 +0800847 return -EINVAL;
848 }
849
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700850 keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;
Emmanuel Grumbachccc038a2008-05-15 13:54:09 +0800851 keyconf->hw_key_idx = HW_KEY_DEFAULT;
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700852 priv->stations[IWL_AP_ID].keyinfo.alg = ALG_WEP;
853
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700854 priv->default_wep_key++;
855
Emmanuel Grumbach80fb47a2008-04-14 21:16:08 -0700856 if (test_and_set_bit(keyconf->keyidx, &priv->ucode_key_table))
Winkler, Tomas15b16872008-12-19 10:37:33 +0800857 IWL_ERR(priv, "index %d already used in uCode key table.\n",
Johannes Berg72e15d72010-02-19 11:42:32 -0800858 keyconf->keyidx);
Emmanuel Grumbach80fb47a2008-04-14 21:16:08 -0700859
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700860 priv->wep_keys[keyconf->keyidx].key_size = keyconf->keylen;
861 memcpy(&priv->wep_keys[keyconf->keyidx].key, &keyconf->key,
862 keyconf->keylen);
863
864 ret = iwl_send_static_wepkey_cmd(priv, 0);
Tomas Winklere1623442009-01-27 14:27:56 -0800865 IWL_DEBUG_WEP(priv, "Set default WEP key: len=%d idx=%d ret=%d\n",
Emmanuel Grumbach4564ce82008-06-12 09:47:09 +0800866 keyconf->keylen, keyconf->keyidx, ret);
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700867
868 return ret;
869}
Tomas Winkler27aaba02008-05-05 10:22:44 +0800870EXPORT_SYMBOL(iwl_set_default_wep_key);
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700871
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700872static int iwl_set_wep_dynamic_key_info(struct iwl_priv *priv,
Emmanuel Grumbach0211ddd2008-04-14 21:16:07 -0700873 struct ieee80211_key_conf *keyconf,
874 u8 sta_id)
875{
876 unsigned long flags;
877 __le16 key_flags = 0;
878 int ret;
879
880 keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;
Emmanuel Grumbach0211ddd2008-04-14 21:16:07 -0700881
882 key_flags |= (STA_KEY_FLG_WEP | STA_KEY_FLG_MAP_KEY_MSK);
883 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
884 key_flags &= ~STA_KEY_FLG_INVALID;
885
886 if (keyconf->keylen == WEP_KEY_LEN_128)
887 key_flags |= STA_KEY_FLG_KEY_SIZE_MSK;
888
Tomas Winkler5425e492008-04-15 16:01:38 -0700889 if (sta_id == priv->hw_params.bcast_sta_id)
Emmanuel Grumbach0211ddd2008-04-14 21:16:07 -0700890 key_flags |= STA_KEY_MULTICAST_MSK;
891
892 spin_lock_irqsave(&priv->sta_lock, flags);
893
894 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
895 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
896 priv->stations[sta_id].keyinfo.keyidx = keyconf->keyidx;
897
898 memcpy(priv->stations[sta_id].keyinfo.key,
899 keyconf->key, keyconf->keylen);
900
901 memcpy(&priv->stations[sta_id].sta.key.key[3],
902 keyconf->key, keyconf->keylen);
903
Emmanuel Grumbach3ec47732008-04-17 16:03:36 -0700904 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
905 == STA_KEY_FLG_NO_ENC)
906 priv->stations[sta_id].sta.key.key_offset =
Emmanuel Grumbach80fb47a2008-04-14 21:16:08 -0700907 iwl_get_free_ucode_key_index(priv);
Emmanuel Grumbach3ec47732008-04-17 16:03:36 -0700908 /* else, we are overriding an existing key => no need to allocated room
909 * in uCode. */
Emmanuel Grumbach0211ddd2008-04-14 21:16:07 -0700910
Tomas Winkler40a9a822008-11-25 23:29:03 +0200911 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
Jiri Slabye724b8f2009-01-05 17:06:06 +0100912 "no space for a new key");
Tomas Winkler40a9a822008-11-25 23:29:03 +0200913
Emmanuel Grumbach3ec47732008-04-17 16:03:36 -0700914 priv->stations[sta_id].sta.key.key_flags = key_flags;
Emmanuel Grumbach0211ddd2008-04-14 21:16:07 -0700915 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
916 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
917
Tomas Winkler133636d2008-05-05 10:22:34 +0800918 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
Emmanuel Grumbach0211ddd2008-04-14 21:16:07 -0700919
920 spin_unlock_irqrestore(&priv->sta_lock, flags);
921
922 return ret;
923}
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700924
925static int iwl_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
926 struct ieee80211_key_conf *keyconf,
927 u8 sta_id)
928{
929 unsigned long flags;
930 __le16 key_flags = 0;
Tomas Winkler40a9a822008-11-25 23:29:03 +0200931 int ret;
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700932
933 key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK);
934 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
935 key_flags &= ~STA_KEY_FLG_INVALID;
936
Tomas Winkler5425e492008-04-15 16:01:38 -0700937 if (sta_id == priv->hw_params.bcast_sta_id)
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700938 key_flags |= STA_KEY_MULTICAST_MSK;
939
940 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700941
942 spin_lock_irqsave(&priv->sta_lock, flags);
943 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
944 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
945
946 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
947 keyconf->keylen);
948
949 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
950 keyconf->keylen);
951
Emmanuel Grumbach3ec47732008-04-17 16:03:36 -0700952 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
953 == STA_KEY_FLG_NO_ENC)
954 priv->stations[sta_id].sta.key.key_offset =
955 iwl_get_free_ucode_key_index(priv);
956 /* else, we are overriding an existing key => no need to allocated room
957 * in uCode. */
958
Tomas Winkler40a9a822008-11-25 23:29:03 +0200959 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
Jiri Slabye724b8f2009-01-05 17:06:06 +0100960 "no space for a new key");
Tomas Winkler40a9a822008-11-25 23:29:03 +0200961
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700962 priv->stations[sta_id].sta.key.key_flags = key_flags;
963 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
964 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
965
Tomas Winkler40a9a822008-11-25 23:29:03 +0200966 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
967
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700968 spin_unlock_irqrestore(&priv->sta_lock, flags);
969
Tomas Winkler40a9a822008-11-25 23:29:03 +0200970 return ret;
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700971}
972
973static int iwl_set_tkip_dynamic_key_info(struct iwl_priv *priv,
974 struct ieee80211_key_conf *keyconf,
975 u8 sta_id)
976{
977 unsigned long flags;
978 int ret = 0;
Reinette Chatre299f5462009-04-30 13:56:31 -0700979 __le16 key_flags = 0;
980
981 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
982 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
983 key_flags &= ~STA_KEY_FLG_INVALID;
984
985 if (sta_id == priv->hw_params.bcast_sta_id)
986 key_flags |= STA_KEY_MULTICAST_MSK;
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700987
988 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
989 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700990
991 spin_lock_irqsave(&priv->sta_lock, flags);
992
993 priv->stations[sta_id].keyinfo.alg = keyconf->alg;
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700994 priv->stations[sta_id].keyinfo.keylen = 16;
Emmanuel Grumbach3ec47732008-04-17 16:03:36 -0700995
996 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
997 == STA_KEY_FLG_NO_ENC)
998 priv->stations[sta_id].sta.key.key_offset =
Emmanuel Grumbach77bab602008-04-15 16:01:44 -0700999 iwl_get_free_ucode_key_index(priv);
Emmanuel Grumbach3ec47732008-04-17 16:03:36 -07001000 /* else, we are overriding an existing key => no need to allocated room
1001 * in uCode. */
Emmanuel Grumbach74805132008-04-14 21:16:09 -07001002
Tomas Winkler40a9a822008-11-25 23:29:03 +02001003 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
Jiri Slabye724b8f2009-01-05 17:06:06 +01001004 "no space for a new key");
Tomas Winkler40a9a822008-11-25 23:29:03 +02001005
Reinette Chatre299f5462009-04-30 13:56:31 -07001006 priv->stations[sta_id].sta.key.key_flags = key_flags;
1007
1008
Emmanuel Grumbach74805132008-04-14 21:16:09 -07001009 /* This copy is acutally not needed: we get the key with each TX */
1010 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key, 16);
1011
1012 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key, 16);
1013
1014 spin_unlock_irqrestore(&priv->sta_lock, flags);
1015
1016 return ret;
1017}
1018
Tomas Winkler9f586712008-11-12 13:14:05 -08001019void iwl_update_tkip_key(struct iwl_priv *priv,
1020 struct ieee80211_key_conf *keyconf,
1021 const u8 *addr, u32 iv32, u16 *phase1key)
1022{
1023 u8 sta_id = IWL_INVALID_STATION;
1024 unsigned long flags;
Tomas Winkler9f586712008-11-12 13:14:05 -08001025 int i;
Tomas Winkler9f586712008-11-12 13:14:05 -08001026
Tomas Winklerc587de02009-06-03 11:44:07 -07001027 sta_id = iwl_find_station(priv, addr);
Tomas Winkler9f586712008-11-12 13:14:05 -08001028 if (sta_id == IWL_INVALID_STATION) {
Tomas Winklere1623442009-01-27 14:27:56 -08001029 IWL_DEBUG_MAC80211(priv, "leave - %pM not in station map.\n",
Tomas Winkler9f586712008-11-12 13:14:05 -08001030 addr);
1031 return;
1032 }
1033
1034 if (iwl_scan_cancel(priv)) {
1035 /* cancel scan failed, just live w/ bad key and rely
1036 briefly on SW decryption */
1037 return;
1038 }
1039
Tomas Winkler9f586712008-11-12 13:14:05 -08001040 spin_lock_irqsave(&priv->sta_lock, flags);
1041
Tomas Winkler9f586712008-11-12 13:14:05 -08001042 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
1043
1044 for (i = 0; i < 5; i++)
1045 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
1046 cpu_to_le16(phase1key[i]);
1047
1048 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1049 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1050
1051 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
1052
1053 spin_unlock_irqrestore(&priv->sta_lock, flags);
1054
1055}
1056EXPORT_SYMBOL(iwl_update_tkip_key);
1057
Emmanuel Grumbach3ec47732008-04-17 16:03:36 -07001058int iwl_remove_dynamic_key(struct iwl_priv *priv,
1059 struct ieee80211_key_conf *keyconf,
1060 u8 sta_id)
Emmanuel Grumbach74805132008-04-14 21:16:09 -07001061{
1062 unsigned long flags;
Emmanuel Grumbach3ec47732008-04-17 16:03:36 -07001063 int ret = 0;
1064 u16 key_flags;
1065 u8 keyidx;
Emmanuel Grumbach74805132008-04-14 21:16:09 -07001066
Emmanuel Grumbachccc038a2008-05-15 13:54:09 +08001067 priv->key_mapping_key--;
Emmanuel Grumbach74805132008-04-14 21:16:09 -07001068
1069 spin_lock_irqsave(&priv->sta_lock, flags);
Emmanuel Grumbach3ec47732008-04-17 16:03:36 -07001070 key_flags = le16_to_cpu(priv->stations[sta_id].sta.key.key_flags);
1071 keyidx = (key_flags >> STA_KEY_FLG_KEYID_POS) & 0x3;
1072
Tomas Winklere1623442009-01-27 14:27:56 -08001073 IWL_DEBUG_WEP(priv, "Remove dynamic key: idx=%d sta=%d\n",
Emmanuel Grumbach4564ce82008-06-12 09:47:09 +08001074 keyconf->keyidx, sta_id);
1075
Emmanuel Grumbach3ec47732008-04-17 16:03:36 -07001076 if (keyconf->keyidx != keyidx) {
1077 /* We need to remove a key with index different that the one
1078 * in the uCode. This means that the key we need to remove has
1079 * been replaced by another one with different index.
1080 * Don't do anything and return ok
1081 */
1082 spin_unlock_irqrestore(&priv->sta_lock, flags);
1083 return 0;
1084 }
1085
Tomas Winkler40a9a822008-11-25 23:29:03 +02001086 if (priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET) {
Winkler, Tomas39aadf82008-12-19 10:37:32 +08001087 IWL_WARN(priv, "Removing wrong key %d 0x%x\n",
Tomas Winkler40a9a822008-11-25 23:29:03 +02001088 keyconf->keyidx, key_flags);
1089 spin_unlock_irqrestore(&priv->sta_lock, flags);
1090 return 0;
1091 }
1092
Emmanuel Grumbach74805132008-04-14 21:16:09 -07001093 if (!test_and_clear_bit(priv->stations[sta_id].sta.key.key_offset,
1094 &priv->ucode_key_table))
Winkler, Tomas15b16872008-12-19 10:37:33 +08001095 IWL_ERR(priv, "index %d not used in uCode key table.\n",
Emmanuel Grumbach74805132008-04-14 21:16:09 -07001096 priv->stations[sta_id].sta.key.key_offset);
1097 memset(&priv->stations[sta_id].keyinfo, 0,
Tomas Winkler6def9762008-05-05 10:22:31 +08001098 sizeof(struct iwl_hw_key));
Emmanuel Grumbach74805132008-04-14 21:16:09 -07001099 memset(&priv->stations[sta_id].sta.key, 0,
1100 sizeof(struct iwl4965_keyinfo));
Emmanuel Grumbach3ec47732008-04-17 16:03:36 -07001101 priv->stations[sta_id].sta.key.key_flags =
1102 STA_KEY_FLG_NO_ENC | STA_KEY_FLG_INVALID;
1103 priv->stations[sta_id].sta.key.key_offset = WEP_INVALID_OFFSET;
Emmanuel Grumbach74805132008-04-14 21:16:09 -07001104 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1105 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
Emmanuel Grumbach74805132008-04-14 21:16:09 -07001106
Reinette Chatre2d1bb9e2009-07-17 09:30:18 -07001107 if (iwl_is_rfkill(priv)) {
1108 IWL_DEBUG_WEP(priv, "Not sending REPLY_ADD_STA command because RFKILL enabled. \n");
1109 spin_unlock_irqrestore(&priv->sta_lock, flags);
1110 return 0;
1111 }
Emmanuel Grumbachccc038a2008-05-15 13:54:09 +08001112 ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
Emmanuel Grumbach3ec47732008-04-17 16:03:36 -07001113 spin_unlock_irqrestore(&priv->sta_lock, flags);
1114 return ret;
Emmanuel Grumbach74805132008-04-14 21:16:09 -07001115}
Tomas Winkler27aaba02008-05-05 10:22:44 +08001116EXPORT_SYMBOL(iwl_remove_dynamic_key);
Emmanuel Grumbach74805132008-04-14 21:16:09 -07001117
1118int iwl_set_dynamic_key(struct iwl_priv *priv,
Emmanuel Grumbachccc038a2008-05-15 13:54:09 +08001119 struct ieee80211_key_conf *keyconf, u8 sta_id)
Emmanuel Grumbach74805132008-04-14 21:16:09 -07001120{
1121 int ret;
1122
Emmanuel Grumbachccc038a2008-05-15 13:54:09 +08001123 priv->key_mapping_key++;
1124 keyconf->hw_key_idx = HW_KEY_DYNAMIC;
Emmanuel Grumbach74805132008-04-14 21:16:09 -07001125
Emmanuel Grumbachccc038a2008-05-15 13:54:09 +08001126 switch (keyconf->alg) {
Emmanuel Grumbach74805132008-04-14 21:16:09 -07001127 case ALG_CCMP:
Emmanuel Grumbachccc038a2008-05-15 13:54:09 +08001128 ret = iwl_set_ccmp_dynamic_key_info(priv, keyconf, sta_id);
Emmanuel Grumbach74805132008-04-14 21:16:09 -07001129 break;
1130 case ALG_TKIP:
Emmanuel Grumbachccc038a2008-05-15 13:54:09 +08001131 ret = iwl_set_tkip_dynamic_key_info(priv, keyconf, sta_id);
Emmanuel Grumbach74805132008-04-14 21:16:09 -07001132 break;
1133 case ALG_WEP:
Emmanuel Grumbachccc038a2008-05-15 13:54:09 +08001134 ret = iwl_set_wep_dynamic_key_info(priv, keyconf, sta_id);
Emmanuel Grumbach74805132008-04-14 21:16:09 -07001135 break;
1136 default:
Winkler, Tomas15b16872008-12-19 10:37:33 +08001137 IWL_ERR(priv,
1138 "Unknown alg: %s alg = %d\n", __func__, keyconf->alg);
Emmanuel Grumbach74805132008-04-14 21:16:09 -07001139 ret = -EINVAL;
1140 }
1141
Tomas Winklere1623442009-01-27 14:27:56 -08001142 IWL_DEBUG_WEP(priv, "Set dynamic key: alg= %d len=%d idx=%d sta=%d ret=%d\n",
Emmanuel Grumbach4564ce82008-06-12 09:47:09 +08001143 keyconf->alg, keyconf->keylen, keyconf->keyidx,
1144 sta_id, ret);
1145
Emmanuel Grumbach74805132008-04-14 21:16:09 -07001146 return ret;
1147}
Tomas Winkler27aaba02008-05-05 10:22:44 +08001148EXPORT_SYMBOL(iwl_set_dynamic_key);
Emmanuel Grumbach74805132008-04-14 21:16:09 -07001149
Tomas Winkler66c73db2008-04-15 16:01:40 -07001150#ifdef CONFIG_IWLWIFI_DEBUG
1151static void iwl_dump_lq_cmd(struct iwl_priv *priv,
1152 struct iwl_link_quality_cmd *lq)
1153{
1154 int i;
Tomas Winklere1623442009-01-27 14:27:56 -08001155 IWL_DEBUG_RATE(priv, "lq station id 0x%x\n", lq->sta_id);
1156 IWL_DEBUG_RATE(priv, "lq ant 0x%X 0x%X\n",
Tomas Winkler66c73db2008-04-15 16:01:40 -07001157 lq->general_params.single_stream_ant_msk,
1158 lq->general_params.dual_stream_ant_msk);
1159
1160 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++)
Tomas Winklere1623442009-01-27 14:27:56 -08001161 IWL_DEBUG_RATE(priv, "lq index %d 0x%X\n",
Tomas Winkler66c73db2008-04-15 16:01:40 -07001162 i, lq->rs_table[i].rate_n_flags);
1163}
1164#else
1165static inline void iwl_dump_lq_cmd(struct iwl_priv *priv,
1166 struct iwl_link_quality_cmd *lq)
1167{
1168}
1169#endif
1170
Reinette Chatrefe6b23d2010-02-22 16:24:47 -08001171/**
1172 * iwl_send_lq_cmd() - Send link quality command
1173 * @init: This command is sent as part of station initialization right
1174 * after station has been added.
1175 *
1176 * The link quality command is sent as the last step of station creation.
1177 * This is the special case in which init is set and we call a callback in
1178 * this case to clear the state indicating that station creation is in
1179 * progress.
1180 */
Tomas Winkler66c73db2008-04-15 16:01:40 -07001181int iwl_send_lq_cmd(struct iwl_priv *priv,
Reinette Chatrefe6b23d2010-02-22 16:24:47 -08001182 struct iwl_link_quality_cmd *lq, u8 flags, bool init)
Tomas Winkler66c73db2008-04-15 16:01:40 -07001183{
Reinette Chatrefe6b23d2010-02-22 16:24:47 -08001184 int ret = 0;
1185 unsigned long flags_spin;
1186
Tomas Winkler66c73db2008-04-15 16:01:40 -07001187 struct iwl_host_cmd cmd = {
1188 .id = REPLY_TX_LINK_QUALITY_CMD,
1189 .len = sizeof(struct iwl_link_quality_cmd),
Johannes Bergc2acea82009-07-24 11:13:05 -07001190 .flags = flags,
Tomas Winkler66c73db2008-04-15 16:01:40 -07001191 .data = lq,
1192 };
1193
1194 if ((lq->sta_id == 0xFF) &&
Johannes Berg05c914f2008-09-11 00:01:58 +02001195 (priv->iw_mode == NL80211_IFTYPE_ADHOC))
Tomas Winkler66c73db2008-04-15 16:01:40 -07001196 return -EINVAL;
1197
1198 if (lq->sta_id == 0xFF)
1199 lq->sta_id = IWL_AP_ID;
1200
Tomas Winkler3ac7f142008-07-21 02:40:14 +03001201 iwl_dump_lq_cmd(priv, lq);
Reinette Chatrefe6b23d2010-02-22 16:24:47 -08001202 BUG_ON(init && (cmd.flags & CMD_ASYNC));
Tomas Winkler66c73db2008-04-15 16:01:40 -07001203
Reinette Chatrefe6b23d2010-02-22 16:24:47 -08001204 iwl_dump_lq_cmd(priv, lq);
1205 ret = iwl_send_cmd(priv, &cmd);
1206 if (ret || (cmd.flags & CMD_ASYNC))
1207 return ret;
Tomas Winkler66c73db2008-04-15 16:01:40 -07001208
Reinette Chatrefe6b23d2010-02-22 16:24:47 -08001209 if (init) {
1210 IWL_DEBUG_INFO(priv, "init LQ command complete, clearing sta addition status for sta %d \n",
1211 lq->sta_id);
1212 spin_lock_irqsave(&priv->sta_lock, flags_spin);
1213 priv->stations[lq->sta_id].used &= ~IWL_STA_UCODE_INPROGRESS;
1214 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
1215 }
Tomas Winkler66c73db2008-04-15 16:01:40 -07001216 return 0;
1217}
1218EXPORT_SYMBOL(iwl_send_lq_cmd);
1219
Tomas Winkler4f40e4d2008-05-15 13:54:04 +08001220/**
Reinette Chatre9a9ca652009-10-30 14:36:12 -07001221 * iwl_add_bcast_station - add broadcast station into station table.
1222 */
1223void iwl_add_bcast_station(struct iwl_priv *priv)
1224{
Reinette Chatre3459ab52010-01-22 14:22:49 -08001225 IWL_DEBUG_INFO(priv, "Adding broadcast station to station table\n");
Reinette Chatrefe6b23d2010-02-22 16:24:47 -08001226 iwl_add_local_station(priv, iwl_bcast_addr, true);
Reinette Chatre9a9ca652009-10-30 14:36:12 -07001227}
1228EXPORT_SYMBOL(iwl_add_bcast_station);
1229
1230/**
Reinette Chatre3459ab52010-01-22 14:22:49 -08001231 * iwl3945_add_bcast_station - add broadcast station into station table.
1232 */
1233void iwl3945_add_bcast_station(struct iwl_priv *priv)
1234{
1235 IWL_DEBUG_INFO(priv, "Adding broadcast station to station table\n");
Reinette Chatrefe6b23d2010-02-22 16:24:47 -08001236 iwl_add_local_station(priv, iwl_bcast_addr, false);
1237 /*
1238 * It is assumed that when station is added more initialization
1239 * needs to be done, but for 3945 it is not the case and we can
1240 * just release station table access right here.
1241 */
1242 priv->stations[priv->hw_params.bcast_sta_id].used &= ~IWL_STA_UCODE_INPROGRESS;
1243
Reinette Chatre3459ab52010-01-22 14:22:49 -08001244}
1245EXPORT_SYMBOL(iwl3945_add_bcast_station);
1246
1247/**
Tomas Winkler4f40e4d2008-05-15 13:54:04 +08001248 * iwl_get_sta_id - Find station's index within station table
1249 *
1250 * If new IBSS station, create new entry in station table
1251 */
1252int iwl_get_sta_id(struct iwl_priv *priv, struct ieee80211_hdr *hdr)
1253{
1254 int sta_id;
Luis R. Rodriguez943ab702009-07-14 20:14:07 -04001255 __le16 fc = hdr->frame_control;
Tomas Winkler4f40e4d2008-05-15 13:54:04 +08001256
1257 /* If this frame is broadcast or management, use broadcast station id */
Luis R. Rodriguez943ab702009-07-14 20:14:07 -04001258 if (!ieee80211_is_data(fc) || is_multicast_ether_addr(hdr->addr1))
Tomas Winkler4f40e4d2008-05-15 13:54:04 +08001259 return priv->hw_params.bcast_sta_id;
1260
1261 switch (priv->iw_mode) {
1262
1263 /* If we are a client station in a BSS network, use the special
1264 * AP station entry (that's the only station we communicate with) */
Johannes Berg05c914f2008-09-11 00:01:58 +02001265 case NL80211_IFTYPE_STATION:
Reinette Chatrefe6b23d2010-02-22 16:24:47 -08001266 /*
1267 * If addition of station not complete yet, which means
1268 * that rate scaling has not been initialized, then return
1269 * the broadcast station.
1270 */
1271 if (!(priv->stations[IWL_AP_ID].used & IWL_STA_UCODE_ACTIVE))
1272 return priv->hw_params.bcast_sta_id;
Tomas Winkler4f40e4d2008-05-15 13:54:04 +08001273 return IWL_AP_ID;
1274
1275 /* If we are an AP, then find the station, or use BCAST */
Johannes Berg05c914f2008-09-11 00:01:58 +02001276 case NL80211_IFTYPE_AP:
Tomas Winklerc587de02009-06-03 11:44:07 -07001277 sta_id = iwl_find_station(priv, hdr->addr1);
Tomas Winkler4f40e4d2008-05-15 13:54:04 +08001278 if (sta_id != IWL_INVALID_STATION)
1279 return sta_id;
1280 return priv->hw_params.bcast_sta_id;
1281
1282 /* If this frame is going out to an IBSS network, find the station,
1283 * or create a new station table entry */
Johannes Berg05c914f2008-09-11 00:01:58 +02001284 case NL80211_IFTYPE_ADHOC:
Tomas Winklerc587de02009-06-03 11:44:07 -07001285 sta_id = iwl_find_station(priv, hdr->addr1);
Tomas Winkler4f40e4d2008-05-15 13:54:04 +08001286 if (sta_id != IWL_INVALID_STATION)
1287 return sta_id;
1288
Tomas Winklere1623442009-01-27 14:27:56 -08001289 IWL_DEBUG_DROP(priv, "Station %pM not in station map. "
Tomas Winkler4f40e4d2008-05-15 13:54:04 +08001290 "Defaulting to broadcast...\n",
Johannes Berge1749612008-10-27 15:59:26 -07001291 hdr->addr1);
Reinette Chatre3d816c72009-08-07 15:41:37 -07001292 iwl_print_hex_dump(priv, IWL_DL_DROP, (u8 *) hdr, sizeof(*hdr));
Tomas Winkler4f40e4d2008-05-15 13:54:04 +08001293 return priv->hw_params.bcast_sta_id;
1294
1295 default:
Winkler, Tomas39aadf82008-12-19 10:37:32 +08001296 IWL_WARN(priv, "Unknown mode of operation: %d\n",
1297 priv->iw_mode);
Tomas Winkler4f40e4d2008-05-15 13:54:04 +08001298 return priv->hw_params.bcast_sta_id;
1299 }
1300}
1301EXPORT_SYMBOL(iwl_get_sta_id);
1302
Tomas Winkler5083e562008-05-29 16:35:15 +08001303/**
Tomas Winkler9f586712008-11-12 13:14:05 -08001304 * iwl_sta_tx_modify_enable_tid - Enable Tx for this TID in station table
Tomas Winkler5083e562008-05-29 16:35:15 +08001305 */
Tomas Winkler9f586712008-11-12 13:14:05 -08001306void iwl_sta_tx_modify_enable_tid(struct iwl_priv *priv, int sta_id, int tid)
Tomas Winkler5083e562008-05-29 16:35:15 +08001307{
1308 unsigned long flags;
1309
1310 /* Remove "disable" flag, to enable Tx for this TID */
1311 spin_lock_irqsave(&priv->sta_lock, flags);
1312 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_TID_DISABLE_TX;
1313 priv->stations[sta_id].sta.tid_disable_tx &= cpu_to_le16(~(1 << tid));
1314 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1315 spin_unlock_irqrestore(&priv->sta_lock, flags);
1316
1317 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
1318}
Tomas Winkler9f586712008-11-12 13:14:05 -08001319EXPORT_SYMBOL(iwl_sta_tx_modify_enable_tid);
1320
1321int iwl_sta_rx_agg_start(struct iwl_priv *priv,
1322 const u8 *addr, int tid, u16 ssn)
1323{
1324 unsigned long flags;
1325 int sta_id;
1326
Tomas Winklerc587de02009-06-03 11:44:07 -07001327 sta_id = iwl_find_station(priv, addr);
Tomas Winkler9f586712008-11-12 13:14:05 -08001328 if (sta_id == IWL_INVALID_STATION)
1329 return -ENXIO;
1330
1331 spin_lock_irqsave(&priv->sta_lock, flags);
1332 priv->stations[sta_id].sta.station_flags_msk = 0;
1333 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_ADDBA_TID_MSK;
1334 priv->stations[sta_id].sta.add_immediate_ba_tid = (u8)tid;
1335 priv->stations[sta_id].sta.add_immediate_ba_ssn = cpu_to_le16(ssn);
1336 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1337 spin_unlock_irqrestore(&priv->sta_lock, flags);
1338
1339 return iwl_send_add_sta(priv, &priv->stations[sta_id].sta,
1340 CMD_ASYNC);
1341}
1342EXPORT_SYMBOL(iwl_sta_rx_agg_start);
1343
1344int iwl_sta_rx_agg_stop(struct iwl_priv *priv, const u8 *addr, int tid)
1345{
1346 unsigned long flags;
1347 int sta_id;
1348
Tomas Winklerc587de02009-06-03 11:44:07 -07001349 sta_id = iwl_find_station(priv, addr);
Wey-Yi Guya2f1cbe2009-03-17 21:51:52 -07001350 if (sta_id == IWL_INVALID_STATION) {
1351 IWL_ERR(priv, "Invalid station for AGG tid %d\n", tid);
Tomas Winkler9f586712008-11-12 13:14:05 -08001352 return -ENXIO;
Wey-Yi Guya2f1cbe2009-03-17 21:51:52 -07001353 }
Tomas Winkler9f586712008-11-12 13:14:05 -08001354
1355 spin_lock_irqsave(&priv->sta_lock, flags);
1356 priv->stations[sta_id].sta.station_flags_msk = 0;
1357 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_DELBA_TID_MSK;
1358 priv->stations[sta_id].sta.remove_immediate_ba_tid = (u8)tid;
1359 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1360 spin_unlock_irqrestore(&priv->sta_lock, flags);
1361
1362 return iwl_send_add_sta(priv, &priv->stations[sta_id].sta,
1363 CMD_ASYNC);
1364}
1365EXPORT_SYMBOL(iwl_sta_rx_agg_stop);
1366
Johannes Berg6ab10ff2009-11-13 11:56:37 -08001367void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id)
Tomas Winkler9f586712008-11-12 13:14:05 -08001368{
1369 unsigned long flags;
1370
1371 spin_lock_irqsave(&priv->sta_lock, flags);
1372 priv->stations[sta_id].sta.station_flags &= ~STA_FLG_PWR_SAVE_MSK;
1373 priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK;
1374 priv->stations[sta_id].sta.sta.modify_mask = 0;
Johannes Berg6ab10ff2009-11-13 11:56:37 -08001375 priv->stations[sta_id].sta.sleep_tx_count = 0;
Tomas Winkler9f586712008-11-12 13:14:05 -08001376 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1377 spin_unlock_irqrestore(&priv->sta_lock, flags);
1378
1379 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
1380}
Johannes Berg6ab10ff2009-11-13 11:56:37 -08001381EXPORT_SYMBOL(iwl_sta_modify_ps_wake);
Tomas Winkler9f586712008-11-12 13:14:05 -08001382
Johannes Berg6ab10ff2009-11-13 11:56:37 -08001383void iwl_sta_modify_sleep_tx_count(struct iwl_priv *priv, int sta_id, int cnt)
Tomas Winkler9f586712008-11-12 13:14:05 -08001384{
Johannes Berg6ab10ff2009-11-13 11:56:37 -08001385 unsigned long flags;
Tomas Winkler9f586712008-11-12 13:14:05 -08001386
Johannes Berg6ab10ff2009-11-13 11:56:37 -08001387 spin_lock_irqsave(&priv->sta_lock, flags);
1388 priv->stations[sta_id].sta.station_flags |= STA_FLG_PWR_SAVE_MSK;
1389 priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK;
1390 priv->stations[sta_id].sta.sta.modify_mask =
1391 STA_MODIFY_SLEEP_TX_COUNT_MSK;
1392 priv->stations[sta_id].sta.sleep_tx_count = cpu_to_le16(cnt);
1393 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1394 spin_unlock_irqrestore(&priv->sta_lock, flags);
Tomas Winkler9f586712008-11-12 13:14:05 -08001395
Johannes Berg6ab10ff2009-11-13 11:56:37 -08001396 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
Tomas Winkler9f586712008-11-12 13:14:05 -08001397}
Wey-Yi Guy74bcdb32010-03-17 13:34:34 -07001398EXPORT_SYMBOL(iwl_sta_modify_sleep_tx_count);
Reinette Chatrefe6b23d2010-02-22 16:24:47 -08001399
1400int iwl_mac_sta_remove(struct ieee80211_hw *hw,
1401 struct ieee80211_vif *vif,
1402 struct ieee80211_sta *sta)
1403{
1404 int ret;
1405 struct iwl_priv *priv = hw->priv;
1406 IWL_DEBUG_INFO(priv, "received request to remove station %pM\n",
1407 sta->addr);
1408 ret = iwl_remove_station(priv, sta);
1409 if (ret)
1410 IWL_ERR(priv, "Error removing station %pM\n",
1411 sta->addr);
1412 return ret;
1413}
1414EXPORT_SYMBOL(iwl_mac_sta_remove);