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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>
Johannes Berg4620fef2010-06-16 03:30:27 -070033#include <linux/lockdep.h>
Emmanuel Grumbach6974e362008-04-14 21:16:06 -070034
Tomas Winkler3e0d4cb2008-04-24 11:55:38 -070035#include "iwl-dev.h"
Emmanuel Grumbach6974e362008-04-14 21:16:06 -070036#include "iwl-core.h"
37#include "iwl-sta.h"
Tomas Winkler7a999bf2008-05-29 16:35:02 +080038
Reinette Chatre1fa97aa2010-01-22 14:22:48 -080039/* priv->sta_lock must be held */
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +080040static void iwl_sta_ucode_activate(struct iwl_priv *priv, u8 sta_id)
41{
Reinette Chatre1fa97aa2010-01-22 14:22:48 -080042
43 if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE))
44 IWL_ERR(priv, "ACTIVATE a non DRIVER active station id %u addr %pM\n",
45 sta_id, priv->stations[sta_id].sta.sta.addr);
46
47 if (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE) {
48 IWL_DEBUG_ASSOC(priv,
49 "STA id %u addr %pM already present in uCode (according to driver)\n",
50 sta_id, priv->stations[sta_id].sta.sta.addr);
51 } else {
52 priv->stations[sta_id].used |= IWL_STA_UCODE_ACTIVE;
53 IWL_DEBUG_ASSOC(priv, "Added STA id %u addr %pM to uCode\n",
54 sta_id, priv->stations[sta_id].sta.sta.addr);
55 }
56}
57
Johannes Berg09034cb2010-06-14 08:32:38 -070058static int iwl_process_add_sta_resp(struct iwl_priv *priv,
59 struct iwl_addsta_cmd *addsta,
60 struct iwl_rx_packet *pkt,
61 bool sync)
Reinette Chatre1fa97aa2010-01-22 14:22:48 -080062{
63 u8 sta_id = addsta->sta.sta_id;
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +080064 unsigned long flags;
Johannes Berg09034cb2010-06-14 08:32:38 -070065 int ret = -EIO;
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +080066
Reinette Chatre1fa97aa2010-01-22 14:22:48 -080067 if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
68 IWL_ERR(priv, "Bad return from REPLY_ADD_STA (0x%08X)\n",
69 pkt->hdr.flags);
Johannes Berg09034cb2010-06-14 08:32:38 -070070 return ret;
Reinette Chatre1fa97aa2010-01-22 14:22:48 -080071 }
72
73 IWL_DEBUG_INFO(priv, "Processing response for adding station %u\n",
74 sta_id);
75
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +080076 spin_lock_irqsave(&priv->sta_lock, flags);
77
Reinette Chatre1fa97aa2010-01-22 14:22:48 -080078 switch (pkt->u.add_sta.status) {
79 case ADD_STA_SUCCESS_MSK:
80 IWL_DEBUG_INFO(priv, "REPLY_ADD_STA PASSED\n");
81 iwl_sta_ucode_activate(priv, sta_id);
Johannes Berg09034cb2010-06-14 08:32:38 -070082 ret = 0;
Reinette Chatre1fa97aa2010-01-22 14:22:48 -080083 break;
84 case ADD_STA_NO_ROOM_IN_TABLE:
85 IWL_ERR(priv, "Adding station %d failed, no room in table.\n",
Winkler, Tomas15b16872008-12-19 10:37:33 +080086 sta_id);
Reinette Chatre1fa97aa2010-01-22 14:22:48 -080087 break;
88 case ADD_STA_NO_BLOCK_ACK_RESOURCE:
89 IWL_ERR(priv, "Adding station %d failed, no block ack resource.\n",
90 sta_id);
91 break;
92 case ADD_STA_MODIFY_NON_EXIST_STA:
Frans Pop91dd6c22010-03-24 14:19:58 -070093 IWL_ERR(priv, "Attempting to modify non-existing station %d\n",
Reinette Chatre1fa97aa2010-01-22 14:22:48 -080094 sta_id);
95 break;
96 default:
97 IWL_DEBUG_ASSOC(priv, "Received REPLY_ADD_STA:(0x%08X)\n",
98 pkt->u.add_sta.status);
99 break;
100 }
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800101
Reinette Chatre1fa97aa2010-01-22 14:22:48 -0800102 IWL_DEBUG_INFO(priv, "%s station id %u addr %pM\n",
103 priv->stations[sta_id].sta.mode ==
104 STA_CONTROL_MODIFY_MSK ? "Modified" : "Added",
105 sta_id, priv->stations[sta_id].sta.sta.addr);
106
107 /*
108 * XXX: The MAC address in the command buffer is often changed from
109 * the original sent to the device. That is, the MAC address
110 * written to the command buffer often is not the same MAC adress
111 * read from the command buffer when the command returns. This
112 * issue has not yet been resolved and this debugging is left to
113 * observe the problem.
114 */
115 IWL_DEBUG_INFO(priv, "%s station according to cmd buffer %pM\n",
116 priv->stations[sta_id].sta.mode ==
117 STA_CONTROL_MODIFY_MSK ? "Modified" : "Added",
118 addsta->sta.addr);
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800119 spin_unlock_irqrestore(&priv->sta_lock, flags);
Johannes Berg09034cb2010-06-14 08:32:38 -0700120
121 return ret;
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800122}
123
Johannes Berg5696aea2009-07-24 11:13:06 -0700124static void iwl_add_sta_callback(struct iwl_priv *priv,
125 struct iwl_device_cmd *cmd,
Zhu Yi2f301222009-10-09 17:19:45 +0800126 struct iwl_rx_packet *pkt)
Tomas Winkler42132bc2008-05-29 16:35:03 +0800127{
Tomas Winkler3257e5d2008-10-14 12:32:43 -0700128 struct iwl_addsta_cmd *addsta =
129 (struct iwl_addsta_cmd *)cmd->cmd.payload;
Tomas Winkler42132bc2008-05-29 16:35:03 +0800130
Reinette Chatre1fa97aa2010-01-22 14:22:48 -0800131 iwl_process_add_sta_resp(priv, addsta, pkt, false);
Tomas Winkler42132bc2008-05-29 16:35:03 +0800132
Tomas Winkler42132bc2008-05-29 16:35:03 +0800133}
134
Samuel Ortiz17f841c2009-01-23 13:45:20 -0800135int iwl_send_add_sta(struct iwl_priv *priv,
Tomas Winkler133636d2008-05-05 10:22:34 +0800136 struct iwl_addsta_cmd *sta, u8 flags)
137{
Zhu Yi2f301222009-10-09 17:19:45 +0800138 struct iwl_rx_packet *pkt = NULL;
Tomas Winkler133636d2008-05-05 10:22:34 +0800139 int ret = 0;
140 u8 data[sizeof(*sta)];
141 struct iwl_host_cmd cmd = {
142 .id = REPLY_ADD_STA,
Johannes Bergc2acea82009-07-24 11:13:05 -0700143 .flags = flags,
Tomas Winkler133636d2008-05-05 10:22:34 +0800144 .data = data,
145 };
Reinette Chatref875f512010-04-05 10:43:10 -0700146 u8 sta_id __maybe_unused = sta->sta.sta_id;
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800147
148 IWL_DEBUG_INFO(priv, "Adding sta %u (%pM) %ssynchronously\n",
149 sta_id, sta->sta.addr, flags & CMD_ASYNC ? "a" : "");
Tomas Winkler133636d2008-05-05 10:22:34 +0800150
Tomas Winkler42132bc2008-05-29 16:35:03 +0800151 if (flags & CMD_ASYNC)
Johannes Bergc2acea82009-07-24 11:13:05 -0700152 cmd.callback = iwl_add_sta_callback;
Johannes Berg4620fef2010-06-16 03:30:27 -0700153 else {
Johannes Bergc2acea82009-07-24 11:13:05 -0700154 cmd.flags |= CMD_WANT_SKB;
Johannes Berg4620fef2010-06-16 03:30:27 -0700155 might_sleep();
156 }
Tomas Winkler133636d2008-05-05 10:22:34 +0800157
158 cmd.len = priv->cfg->ops->utils->build_addsta_hcmd(sta, data);
159 ret = iwl_send_cmd(priv, &cmd);
160
161 if (ret || (flags & CMD_ASYNC))
162 return ret;
163
Tomas Winkler133636d2008-05-05 10:22:34 +0800164 if (ret == 0) {
Reinette Chatre1fa97aa2010-01-22 14:22:48 -0800165 pkt = (struct iwl_rx_packet *)cmd.reply_page;
Johannes Berg09034cb2010-06-14 08:32:38 -0700166 ret = iwl_process_add_sta_resp(priv, sta, pkt, true);
Tomas Winkler133636d2008-05-05 10:22:34 +0800167 }
Zhu Yi64a76b52009-12-10 14:37:21 -0800168 iwl_free_pages(priv, cmd.reply_page);
Tomas Winkler133636d2008-05-05 10:22:34 +0800169
170 return ret;
171}
Samuel Ortiz17f841c2009-01-23 13:45:20 -0800172EXPORT_SYMBOL(iwl_send_add_sta);
Tomas Winkler947b13a2008-04-16 16:34:48 -0700173
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800174static void iwl_set_ht_add_station(struct iwl_priv *priv, u8 index,
Johannes Berg238d7812010-08-23 10:46:45 +0200175 struct ieee80211_sta *sta)
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800176{
Johannes Berg238d7812010-08-23 10:46:45 +0200177 struct ieee80211_sta_ht_cap *sta_ht_inf = &sta->ht_cap;
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800178 __le32 sta_flags;
179 u8 mimo_ps_mode;
180
Johannes Berg238d7812010-08-23 10:46:45 +0200181 if (!sta || !sta_ht_inf->ht_supported)
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800182 goto done;
183
Tomas Winkler00c5ae22008-09-03 11:26:42 +0800184 mimo_ps_mode = (sta_ht_inf->cap & IEEE80211_HT_CAP_SM_PS) >> 2;
Wey-Yi Guy3f3e0372009-10-30 14:36:17 -0700185 IWL_DEBUG_ASSOC(priv, "spatial multiplexing power save mode: %s\n",
186 (mimo_ps_mode == WLAN_HT_CAP_SM_PS_STATIC) ?
187 "static" :
188 (mimo_ps_mode == WLAN_HT_CAP_SM_PS_DYNAMIC) ?
189 "dynamic" : "disabled");
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800190
191 sta_flags = priv->stations[index].sta.station_flags;
192
193 sta_flags &= ~(STA_FLG_RTS_MIMO_PROT_MSK | STA_FLG_MIMO_DIS_MSK);
194
195 switch (mimo_ps_mode) {
Tomas Winkler00c5ae22008-09-03 11:26:42 +0800196 case WLAN_HT_CAP_SM_PS_STATIC:
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800197 sta_flags |= STA_FLG_MIMO_DIS_MSK;
198 break;
Tomas Winkler00c5ae22008-09-03 11:26:42 +0800199 case WLAN_HT_CAP_SM_PS_DYNAMIC:
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800200 sta_flags |= STA_FLG_RTS_MIMO_PROT_MSK;
201 break;
Tomas Winkler00c5ae22008-09-03 11:26:42 +0800202 case WLAN_HT_CAP_SM_PS_DISABLED:
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800203 break;
204 default:
Winkler, Tomas39aadf82008-12-19 10:37:32 +0800205 IWL_WARN(priv, "Invalid MIMO PS mode %d\n", mimo_ps_mode);
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800206 break;
207 }
208
209 sta_flags |= cpu_to_le32(
210 (u32)sta_ht_inf->ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS);
211
212 sta_flags |= cpu_to_le32(
213 (u32)sta_ht_inf->ampdu_density << STA_FLG_AGG_MPDU_DENSITY_POS);
214
Wey-Yi Guy7aafef12009-08-07 15:41:38 -0700215 if (iwl_is_ht40_tx_allowed(priv, sta_ht_inf))
216 sta_flags |= STA_FLG_HT40_EN_MSK;
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800217 else
Wey-Yi Guy7aafef12009-08-07 15:41:38 -0700218 sta_flags &= ~STA_FLG_HT40_EN_MSK;
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800219
220 priv->stations[index].sta.station_flags = sta_flags;
221 done:
222 return;
223}
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800224
225/**
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800226 * iwl_prep_station - Prepare station information for addition
227 *
228 * should be called with sta_lock held
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800229 */
Johannes Berga194e322010-08-27 08:53:46 -0700230static u8 iwl_prep_station(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
231 const u8 *addr, bool is_ap,
Johannes Berg238d7812010-08-23 10:46:45 +0200232 struct ieee80211_sta *sta)
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800233{
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800234 struct iwl_station_entry *station;
Tomas Winklerc587de02009-06-03 11:44:07 -0700235 int i;
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800236 u8 sta_id = IWL_INVALID_STATION;
Tomas Winklerc587de02009-06-03 11:44:07 -0700237 u16 rate;
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800238
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800239 if (is_ap)
Johannes Berg2995baf2010-08-23 10:46:42 +0200240 sta_id = ctx->ap_sta_id;
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800241 else if (is_broadcast_ether_addr(addr))
Johannes Berga194e322010-08-27 08:53:46 -0700242 sta_id = ctx->bcast_sta_id;
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800243 else
244 for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++) {
245 if (!compare_ether_addr(priv->stations[i].sta.sta.addr,
246 addr)) {
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800247 sta_id = i;
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800248 break;
249 }
250
251 if (!priv->stations[i].used &&
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800252 sta_id == IWL_INVALID_STATION)
253 sta_id = i;
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800254 }
255
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800256 /*
257 * These two conditions have the same outcome, but keep them
258 * separate
259 */
260 if (unlikely(sta_id == IWL_INVALID_STATION))
261 return sta_id;
262
263 /*
264 * uCode is not able to deal with multiple requests to add a
265 * station. Keep track if one is in progress so that we do not send
266 * another.
267 */
268 if (priv->stations[sta_id].used & IWL_STA_UCODE_INPROGRESS) {
269 IWL_DEBUG_INFO(priv, "STA %d already in process of being added.\n",
270 sta_id);
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800271 return sta_id;
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800272 }
273
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800274 if ((priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE) &&
275 (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE) &&
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800276 !compare_ether_addr(priv->stations[sta_id].sta.sta.addr, addr)) {
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800277 IWL_DEBUG_ASSOC(priv, "STA %d (%pM) already added, not adding again.\n",
278 sta_id, addr);
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800279 return sta_id;
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800280 }
281
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800282 station = &priv->stations[sta_id];
283 station->used = IWL_STA_DRIVER_ACTIVE;
Tomas Winklere1623442009-01-27 14:27:56 -0800284 IWL_DEBUG_ASSOC(priv, "Add STA to driver ID %d: %pM\n",
Johannes Berge1749612008-10-27 15:59:26 -0700285 sta_id, addr);
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800286 priv->num_stations++;
287
288 /* Set up the REPLY_ADD_STA command to send to device */
289 memset(&station->sta, 0, sizeof(struct iwl_addsta_cmd));
290 memcpy(station->sta.sta.addr, addr, ETH_ALEN);
291 station->sta.mode = 0;
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800292 station->sta.sta.sta_id = sta_id;
Johannes Berg770e13b2010-08-23 10:46:44 +0200293 station->sta.station_flags = ctx->station_flags;
Johannes Bergdcef7322010-08-27 08:55:52 -0700294 station->ctxid = ctx->ctxid;
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800295
Johannes Berg238d7812010-08-23 10:46:45 +0200296 if (sta) {
297 struct iwl_station_priv_common *sta_priv;
298
299 sta_priv = (void *)sta->drv_priv;
300 sta_priv->ctx = ctx;
301 }
302
Johannes Berg63d41762010-04-30 11:30:50 -0700303 /*
304 * OK to call unconditionally, since local stations (IBSS BSSID
Johannes Berg238d7812010-08-23 10:46:45 +0200305 * STA and broadcast STA) pass in a NULL sta, and mac80211
Johannes Berg63d41762010-04-30 11:30:50 -0700306 * doesn't allow HT IBSS.
307 */
Johannes Berg238d7812010-08-23 10:46:45 +0200308 iwl_set_ht_add_station(priv, sta_id, sta);
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800309
Tomas Winklerc587de02009-06-03 11:44:07 -0700310 /* 3945 only */
311 rate = (priv->band == IEEE80211_BAND_5GHZ) ?
312 IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP;
313 /* Turn on both antennas for the station... */
314 station->sta.rate_n_flags = cpu_to_le16(rate | RATE_MCS_ANT_AB_MSK);
315
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800316 return sta_id;
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800317
318}
Tomas Winkler4f40e4d2008-05-15 13:54:04 +0800319
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800320#define STA_WAIT_TIMEOUT (HZ/2)
321
322/**
323 * iwl_add_station_common -
324 */
Johannes Berga194e322010-08-27 08:53:46 -0700325int iwl_add_station_common(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
326 const u8 *addr, bool is_ap,
Johannes Berg238d7812010-08-23 10:46:45 +0200327 struct ieee80211_sta *sta, u8 *sta_id_r)
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800328{
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800329 unsigned long flags_spin;
330 int ret = 0;
331 u8 sta_id;
Reinette Chatre9c5ac092010-05-05 02:26:06 -0700332 struct iwl_addsta_cmd sta_cmd;
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800333
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800334 *sta_id_r = 0;
335 spin_lock_irqsave(&priv->sta_lock, flags_spin);
Johannes Berg238d7812010-08-23 10:46:45 +0200336 sta_id = iwl_prep_station(priv, ctx, addr, is_ap, sta);
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800337 if (sta_id == IWL_INVALID_STATION) {
338 IWL_ERR(priv, "Unable to prepare station %pM for addition\n",
339 addr);
340 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
341 return -EINVAL;
342 }
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800343
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800344 /*
345 * uCode is not able to deal with multiple requests to add a
346 * station. Keep track if one is in progress so that we do not send
347 * another.
348 */
349 if (priv->stations[sta_id].used & IWL_STA_UCODE_INPROGRESS) {
350 IWL_DEBUG_INFO(priv, "STA %d already in process of being added.\n",
351 sta_id);
352 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
353 return -EEXIST;
354 }
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800355
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800356 if ((priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE) &&
357 (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) {
358 IWL_DEBUG_ASSOC(priv, "STA %d (%pM) already added, not adding again.\n",
359 sta_id, addr);
360 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
361 return -EEXIST;
362 }
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800363
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800364 priv->stations[sta_id].used |= IWL_STA_UCODE_INPROGRESS;
Reinette Chatre9c5ac092010-05-05 02:26:06 -0700365 memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd));
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800366 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
367
368 /* Add station to device's station table */
Reinette Chatre9c5ac092010-05-05 02:26:06 -0700369 ret = iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800370 if (ret) {
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800371 spin_lock_irqsave(&priv->sta_lock, flags_spin);
Reinette Chatre9c5ac092010-05-05 02:26:06 -0700372 IWL_ERR(priv, "Adding station %pM failed.\n",
373 priv->stations[sta_id].sta.sta.addr);
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800374 priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE;
375 priv->stations[sta_id].used &= ~IWL_STA_UCODE_INPROGRESS;
376 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
377 }
378 *sta_id_r = sta_id;
379 return ret;
380}
381EXPORT_SYMBOL(iwl_add_station_common);
382
Johannes Berga6a03452010-04-29 10:41:07 -0700383static struct iwl_link_quality_cmd *iwl_sta_alloc_lq(struct iwl_priv *priv,
384 u8 sta_id)
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800385{
386 int i, r;
Reinette Chatred2e210a2010-04-23 10:33:33 -0700387 struct iwl_link_quality_cmd *link_cmd;
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800388 u32 rate_flags;
389
Reinette Chatred2e210a2010-04-23 10:33:33 -0700390 link_cmd = kzalloc(sizeof(struct iwl_link_quality_cmd), GFP_KERNEL);
391 if (!link_cmd) {
392 IWL_ERR(priv, "Unable to allocate memory for LQ cmd.\n");
393 return NULL;
394 }
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800395 /* Set up the rate scaling to start at selected rate, fall back
396 * all the way down to 1M in IEEE order, and then spin on 1M */
Johannes Berg156b70d2010-04-28 14:44:45 -0700397 if (priv->band == IEEE80211_BAND_5GHZ)
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800398 r = IWL_RATE_6M_INDEX;
399 else
400 r = IWL_RATE_1M_INDEX;
401
402 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) {
403 rate_flags = 0;
404 if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE)
405 rate_flags |= RATE_MCS_CCK_MSK;
406
407 rate_flags |= first_antenna(priv->hw_params.valid_tx_ant) <<
408 RATE_MCS_ANT_POS;
409
Reinette Chatred2e210a2010-04-23 10:33:33 -0700410 link_cmd->rs_table[i].rate_n_flags =
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800411 iwl_hw_set_rate_n_flags(iwl_rates[r].plcp, rate_flags);
412 r = iwl_get_prev_ieee_rate(r);
413 }
414
Reinette Chatred2e210a2010-04-23 10:33:33 -0700415 link_cmd->general_params.single_stream_ant_msk =
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800416 first_antenna(priv->hw_params.valid_tx_ant);
Wey-Yi Guy3a23d692010-04-03 16:44:39 -0700417
Reinette Chatred2e210a2010-04-23 10:33:33 -0700418 link_cmd->general_params.dual_stream_ant_msk =
Wey-Yi Guy3a23d692010-04-03 16:44:39 -0700419 priv->hw_params.valid_tx_ant &
420 ~first_antenna(priv->hw_params.valid_tx_ant);
Reinette Chatred2e210a2010-04-23 10:33:33 -0700421 if (!link_cmd->general_params.dual_stream_ant_msk) {
422 link_cmd->general_params.dual_stream_ant_msk = ANT_AB;
Wey-Yi Guy3a23d692010-04-03 16:44:39 -0700423 } else if (num_of_ant(priv->hw_params.valid_tx_ant) == 2) {
Reinette Chatred2e210a2010-04-23 10:33:33 -0700424 link_cmd->general_params.dual_stream_ant_msk =
Wey-Yi Guy3a23d692010-04-03 16:44:39 -0700425 priv->hw_params.valid_tx_ant;
426 }
427
Reinette Chatred2e210a2010-04-23 10:33:33 -0700428 link_cmd->agg_params.agg_dis_start_th = LINK_QUAL_AGG_DISABLE_START_DEF;
429 link_cmd->agg_params.agg_time_limit =
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800430 cpu_to_le16(LINK_QUAL_AGG_TIME_LIMIT_DEF);
431
Johannes Berg156b70d2010-04-28 14:44:45 -0700432 link_cmd->sta_id = sta_id;
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800433
Reinette Chatred2e210a2010-04-23 10:33:33 -0700434 return link_cmd;
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800435}
436
437/*
Johannes Berg57f8db82010-04-30 11:30:49 -0700438 * iwl_add_bssid_station - Add the special IBSS BSSID station
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800439 *
440 * Function sleeps.
441 */
Johannes Berga194e322010-08-27 08:53:46 -0700442int iwl_add_bssid_station(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
443 const u8 *addr, bool init_rs, u8 *sta_id_r)
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800444{
445 int ret;
446 u8 sta_id;
Reinette Chatred2e210a2010-04-23 10:33:33 -0700447 struct iwl_link_quality_cmd *link_cmd;
448 unsigned long flags;
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800449
Dan Carpenter96900c72010-05-14 16:53:46 +0200450 if (sta_id_r)
Johannes Bergfd1af152010-04-30 11:30:43 -0700451 *sta_id_r = IWL_INVALID_STATION;
452
Johannes Berga194e322010-08-27 08:53:46 -0700453 ret = iwl_add_station_common(priv, ctx, addr, 0, NULL, &sta_id);
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800454 if (ret) {
455 IWL_ERR(priv, "Unable to add station %pM\n", addr);
456 return ret;
457 }
458
Johannes Bergfd1af152010-04-30 11:30:43 -0700459 if (sta_id_r)
460 *sta_id_r = sta_id;
461
Reinette Chatred2e210a2010-04-23 10:33:33 -0700462 spin_lock_irqsave(&priv->sta_lock, flags);
463 priv->stations[sta_id].used |= IWL_STA_LOCAL;
464 spin_unlock_irqrestore(&priv->sta_lock, flags);
465
466 if (init_rs) {
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800467 /* Set up default rate scaling table in device's station table */
Johannes Berga6a03452010-04-29 10:41:07 -0700468 link_cmd = iwl_sta_alloc_lq(priv, sta_id);
Reinette Chatred2e210a2010-04-23 10:33:33 -0700469 if (!link_cmd) {
470 IWL_ERR(priv, "Unable to initialize rate scaling for station %pM.\n",
471 addr);
472 return -ENOMEM;
473 }
Johannes Berga6a03452010-04-29 10:41:07 -0700474
475 ret = iwl_send_lq_cmd(priv, link_cmd, CMD_SYNC, true);
476 if (ret)
477 IWL_ERR(priv, "Link quality command failed (%d)\n", ret);
478
Reinette Chatred2e210a2010-04-23 10:33:33 -0700479 spin_lock_irqsave(&priv->sta_lock, flags);
480 priv->stations[sta_id].lq = link_cmd;
481 spin_unlock_irqrestore(&priv->sta_lock, flags);
482 }
483
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800484 return 0;
485}
Johannes Berg57f8db82010-04-30 11:30:49 -0700486EXPORT_SYMBOL(iwl_add_bssid_station);
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800487
488/**
489 * iwl_sta_ucode_deactivate - deactivate ucode status for a station
490 *
491 * priv->sta_lock must be held
492 */
493static void iwl_sta_ucode_deactivate(struct iwl_priv *priv, u8 sta_id)
494{
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800495 /* Ucode must be active and driver must be non active */
Reinette Chatred2e210a2010-04-23 10:33:33 -0700496 if ((priv->stations[sta_id].used &
497 (IWL_STA_UCODE_ACTIVE | IWL_STA_DRIVER_ACTIVE)) != IWL_STA_UCODE_ACTIVE)
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800498 IWL_ERR(priv, "removed non active STA %u\n", sta_id);
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800499
500 priv->stations[sta_id].used &= ~IWL_STA_UCODE_ACTIVE;
501
502 memset(&priv->stations[sta_id], 0, sizeof(struct iwl_station_entry));
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800503 IWL_DEBUG_ASSOC(priv, "Removed STA %u\n", sta_id);
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800504}
505
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800506static int iwl_send_remove_station(struct iwl_priv *priv,
Reinette Chatre9c5ac092010-05-05 02:26:06 -0700507 const u8 *addr, int sta_id)
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800508{
Zhu Yi2f301222009-10-09 17:19:45 +0800509 struct iwl_rx_packet *pkt;
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800510 int ret;
511
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800512 unsigned long flags_spin;
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800513 struct iwl_rem_sta_cmd rm_sta_cmd;
514
515 struct iwl_host_cmd cmd = {
516 .id = REPLY_REMOVE_STA,
517 .len = sizeof(struct iwl_rem_sta_cmd),
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800518 .flags = CMD_SYNC,
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800519 .data = &rm_sta_cmd,
520 };
521
522 memset(&rm_sta_cmd, 0, sizeof(rm_sta_cmd));
523 rm_sta_cmd.num_sta = 1;
Reinette Chatre9c5ac092010-05-05 02:26:06 -0700524 memcpy(&rm_sta_cmd.addr, addr, ETH_ALEN);
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800525
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800526 cmd.flags |= CMD_WANT_SKB;
527
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800528 ret = iwl_send_cmd(priv, &cmd);
529
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800530 if (ret)
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800531 return ret;
532
Zhu Yi2f301222009-10-09 17:19:45 +0800533 pkt = (struct iwl_rx_packet *)cmd.reply_page;
534 if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
Winkler, Tomas15b16872008-12-19 10:37:33 +0800535 IWL_ERR(priv, "Bad return from REPLY_REMOVE_STA (0x%08X)\n",
Zhu Yi2f301222009-10-09 17:19:45 +0800536 pkt->hdr.flags);
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800537 ret = -EIO;
538 }
539
540 if (!ret) {
Zhu Yi2f301222009-10-09 17:19:45 +0800541 switch (pkt->u.rem_sta.status) {
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800542 case REM_STA_SUCCESS_MSK:
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800543 spin_lock_irqsave(&priv->sta_lock, flags_spin);
Reinette Chatre9c5ac092010-05-05 02:26:06 -0700544 iwl_sta_ucode_deactivate(priv, sta_id);
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800545 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
Tomas Winklere1623442009-01-27 14:27:56 -0800546 IWL_DEBUG_ASSOC(priv, "REPLY_REMOVE_STA PASSED\n");
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800547 break;
548 default:
549 ret = -EIO;
Winkler, Tomas15b16872008-12-19 10:37:33 +0800550 IWL_ERR(priv, "REPLY_REMOVE_STA failed\n");
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800551 break;
552 }
553 }
Zhu Yi64a76b52009-12-10 14:37:21 -0800554 iwl_free_pages(priv, cmd.reply_page);
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800555
556 return ret;
557}
Emmanuel Grumbachbe1f3ab62008-06-12 09:47:18 +0800558
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800559/**
560 * iwl_remove_station - Remove driver's knowledge of station.
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800561 */
Johannes Bergfd1af152010-04-30 11:30:43 -0700562int iwl_remove_station(struct iwl_priv *priv, const u8 sta_id,
563 const u8 *addr)
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800564{
Johannes Bergfd1af152010-04-30 11:30:43 -0700565 unsigned long flags;
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800566
567 if (!iwl_is_ready(priv)) {
568 IWL_DEBUG_INFO(priv,
Frans Pop91dd6c22010-03-24 14:19:58 -0700569 "Unable to remove station %pM, device not ready.\n",
Johannes Bergc0222df2010-04-28 08:44:51 -0700570 addr);
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800571 /*
572 * It is typical for stations to be removed when we are
573 * going down. Return success since device will be down
574 * soon anyway
575 */
576 return 0;
577 }
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800578
Tomas Winklere1623442009-01-27 14:27:56 -0800579 IWL_DEBUG_ASSOC(priv, "Removing STA from driver:%d %pM\n",
Johannes Bergfd1af152010-04-30 11:30:43 -0700580 sta_id, addr);
581
582 if (WARN_ON(sta_id == IWL_INVALID_STATION))
583 return -EINVAL;
584
585 spin_lock_irqsave(&priv->sta_lock, flags);
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800586
587 if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) {
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800588 IWL_DEBUG_INFO(priv, "Removing %pM but non DRIVER active\n",
Johannes Bergc0222df2010-04-28 08:44:51 -0700589 addr);
Johannes Bergfd1af152010-04-30 11:30:43 -0700590 goto out_err;
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800591 }
592
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800593 if (!(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) {
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800594 IWL_DEBUG_INFO(priv, "Removing %pM but non UCODE active\n",
Johannes Bergc0222df2010-04-28 08:44:51 -0700595 addr);
Johannes Bergfd1af152010-04-30 11:30:43 -0700596 goto out_err;
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800597 }
598
Johannes Berg1fa61b22010-04-28 08:44:52 -0700599 if (priv->stations[sta_id].used & IWL_STA_LOCAL) {
600 kfree(priv->stations[sta_id].lq);
601 priv->stations[sta_id].lq = NULL;
602 }
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800603
604 priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE;
605
606 priv->num_stations--;
607
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800608 BUG_ON(priv->num_stations < 0);
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800609
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800610 spin_unlock_irqrestore(&priv->sta_lock, flags);
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800611
Reinette Chatre9c5ac092010-05-05 02:26:06 -0700612 return iwl_send_remove_station(priv, addr, sta_id);
Johannes Bergfd1af152010-04-30 11:30:43 -0700613out_err:
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800614 spin_unlock_irqrestore(&priv->sta_lock, flags);
Johannes Bergfd1af152010-04-30 11:30:43 -0700615 return -EINVAL;
Tomas Winkler7a999bf2008-05-29 16:35:02 +0800616}
Johannes Berg1fa61b22010-04-28 08:44:52 -0700617EXPORT_SYMBOL_GPL(iwl_remove_station);
Emmanuel Grumbach24e5c402008-06-30 17:23:03 +0800618
Winkler, Tomas83dde8c2008-11-19 15:32:23 -0800619/**
Johannes Berg2c810cc2010-04-29 00:53:29 -0700620 * iwl_clear_ucode_stations - clear ucode station table bits
621 *
622 * This function clears all the bits in the driver indicating
623 * which stations are active in the ucode. Call when something
624 * other than explicit station management would cause this in
625 * the ucode, e.g. unassociated RXON.
Winkler, Tomas83dde8c2008-11-19 15:32:23 -0800626 */
Johannes Bergdcef7322010-08-27 08:55:52 -0700627void iwl_clear_ucode_stations(struct iwl_priv *priv,
628 struct iwl_rxon_context *ctx)
Winkler, Tomas83dde8c2008-11-19 15:32:23 -0800629{
Mohamed Abbas48676eb2009-03-11 11:17:59 -0700630 int i;
Reinette Chatre7e246192010-02-18 22:58:32 -0800631 unsigned long flags_spin;
632 bool cleared = false;
Winkler, Tomas83dde8c2008-11-19 15:32:23 -0800633
Johannes Berg2c810cc2010-04-29 00:53:29 -0700634 IWL_DEBUG_INFO(priv, "Clearing ucode stations in driver\n");
Mohamed Abbas48676eb2009-03-11 11:17:59 -0700635
Reinette Chatre7e246192010-02-18 22:58:32 -0800636 spin_lock_irqsave(&priv->sta_lock, flags_spin);
Johannes Berg2c810cc2010-04-29 00:53:29 -0700637 for (i = 0; i < priv->hw_params.max_stations; i++) {
Johannes Bergdcef7322010-08-27 08:55:52 -0700638 if (ctx && ctx->ctxid != priv->stations[i].ctxid)
639 continue;
640
Johannes Berg2c810cc2010-04-29 00:53:29 -0700641 if (priv->stations[i].used & IWL_STA_UCODE_ACTIVE) {
642 IWL_DEBUG_INFO(priv, "Clearing ucode active for station %d\n", i);
643 priv->stations[i].used &= ~IWL_STA_UCODE_ACTIVE;
644 cleared = true;
Reinette Chatre7e246192010-02-18 22:58:32 -0800645 }
646 }
647 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
648
649 if (!cleared)
650 IWL_DEBUG_INFO(priv, "No active stations found to be cleared\n");
Winkler, Tomas83dde8c2008-11-19 15:32:23 -0800651}
Reinette Chatre7e246192010-02-18 22:58:32 -0800652EXPORT_SYMBOL(iwl_clear_ucode_stations);
653
654/**
655 * iwl_restore_stations() - Restore driver known stations to device
656 *
657 * All stations considered active by driver, but not present in ucode, is
658 * restored.
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800659 *
660 * Function sleeps.
Reinette Chatre7e246192010-02-18 22:58:32 -0800661 */
Johannes Bergdcef7322010-08-27 08:55:52 -0700662void iwl_restore_stations(struct iwl_priv *priv, struct iwl_rxon_context *ctx)
Reinette Chatre7e246192010-02-18 22:58:32 -0800663{
Reinette Chatre9c5ac092010-05-05 02:26:06 -0700664 struct iwl_addsta_cmd sta_cmd;
665 struct iwl_link_quality_cmd lq;
Reinette Chatre7e246192010-02-18 22:58:32 -0800666 unsigned long flags_spin;
667 int i;
668 bool found = false;
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800669 int ret;
Reinette Chatre9c5ac092010-05-05 02:26:06 -0700670 bool send_lq;
Reinette Chatre7e246192010-02-18 22:58:32 -0800671
672 if (!iwl_is_ready(priv)) {
673 IWL_DEBUG_INFO(priv, "Not ready yet, not restoring any stations.\n");
674 return;
675 }
676
677 IWL_DEBUG_ASSOC(priv, "Restoring all known stations ... start.\n");
678 spin_lock_irqsave(&priv->sta_lock, flags_spin);
679 for (i = 0; i < priv->hw_params.max_stations; i++) {
Johannes Bergdcef7322010-08-27 08:55:52 -0700680 if (ctx->ctxid != priv->stations[i].ctxid)
681 continue;
Reinette Chatre7e246192010-02-18 22:58:32 -0800682 if ((priv->stations[i].used & IWL_STA_DRIVER_ACTIVE) &&
683 !(priv->stations[i].used & IWL_STA_UCODE_ACTIVE)) {
684 IWL_DEBUG_ASSOC(priv, "Restoring sta %pM\n",
685 priv->stations[i].sta.sta.addr);
686 priv->stations[i].sta.mode = 0;
687 priv->stations[i].used |= IWL_STA_UCODE_INPROGRESS;
688 found = true;
689 }
690 }
691
692 for (i = 0; i < priv->hw_params.max_stations; i++) {
693 if ((priv->stations[i].used & IWL_STA_UCODE_INPROGRESS)) {
Reinette Chatre9c5ac092010-05-05 02:26:06 -0700694 memcpy(&sta_cmd, &priv->stations[i].sta,
695 sizeof(struct iwl_addsta_cmd));
696 send_lq = false;
697 if (priv->stations[i].lq) {
698 memcpy(&lq, priv->stations[i].lq,
699 sizeof(struct iwl_link_quality_cmd));
700 send_lq = true;
701 }
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800702 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
Reinette Chatre9c5ac092010-05-05 02:26:06 -0700703 ret = iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800704 if (ret) {
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800705 spin_lock_irqsave(&priv->sta_lock, flags_spin);
Reinette Chatre9c5ac092010-05-05 02:26:06 -0700706 IWL_ERR(priv, "Adding station %pM failed.\n",
707 priv->stations[i].sta.sta.addr);
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800708 priv->stations[i].used &= ~IWL_STA_DRIVER_ACTIVE;
709 priv->stations[i].used &= ~IWL_STA_UCODE_INPROGRESS;
710 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
711 }
712 /*
713 * Rate scaling has already been initialized, send
714 * current LQ command
715 */
Reinette Chatre9c5ac092010-05-05 02:26:06 -0700716 if (send_lq)
717 iwl_send_lq_cmd(priv, &lq, CMD_SYNC, true);
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800718 spin_lock_irqsave(&priv->sta_lock, flags_spin);
Reinette Chatre7e246192010-02-18 22:58:32 -0800719 priv->stations[i].used &= ~IWL_STA_UCODE_INPROGRESS;
720 }
721 }
722
723 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
724 if (!found)
725 IWL_DEBUG_INFO(priv, "Restoring all known stations .... no stations to be restored.\n");
726 else
Reinette Chatrefe6b23d2010-02-22 16:24:47 -0800727 IWL_DEBUG_INFO(priv, "Restoring all known stations .... complete.\n");
Reinette Chatre7e246192010-02-18 22:58:32 -0800728}
729EXPORT_SYMBOL(iwl_restore_stations);
Winkler, Tomas83dde8c2008-11-19 15:32:23 -0800730
Abhijeet Kolekar6e21f152009-02-27 16:21:21 -0800731int iwl_get_free_ucode_key_index(struct iwl_priv *priv)
Emmanuel Grumbach80fb47a2008-04-14 21:16:08 -0700732{
733 int i;
734
Johannes Bergc10afb62010-08-23 10:46:43 +0200735 for (i = 0; i < priv->sta_key_max_num; i++)
Emmanuel Grumbach77bab602008-04-15 16:01:44 -0700736 if (!test_and_set_bit(i, &priv->ucode_key_table))
Emmanuel Grumbach80fb47a2008-04-14 21:16:08 -0700737 return i;
738
Tomas Winkler40a9a822008-11-25 23:29:03 +0200739 return WEP_INVALID_OFFSET;
Emmanuel Grumbach80fb47a2008-04-14 21:16:08 -0700740}
Abhijeet Kolekar6e21f152009-02-27 16:21:21 -0800741EXPORT_SYMBOL(iwl_get_free_ucode_key_index);
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700742
Johannes Bergc10afb62010-08-23 10:46:43 +0200743static int iwl_send_static_wepkey_cmd(struct iwl_priv *priv,
744 struct iwl_rxon_context *ctx,
745 bool send_if_empty)
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700746{
747 int i, not_empty = 0;
748 u8 buff[sizeof(struct iwl_wep_cmd) +
749 sizeof(struct iwl_wep_key) * WEP_KEYS_MAX];
750 struct iwl_wep_cmd *wep_cmd = (struct iwl_wep_cmd *)buff;
751 size_t cmd_size = sizeof(struct iwl_wep_cmd);
752 struct iwl_host_cmd cmd = {
Johannes Bergc10afb62010-08-23 10:46:43 +0200753 .id = ctx->wep_key_cmd,
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700754 .data = wep_cmd,
Johannes Berg72e15d72010-02-19 11:42:32 -0800755 .flags = CMD_SYNC,
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700756 };
757
Johannes Berg72e15d72010-02-19 11:42:32 -0800758 might_sleep();
759
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700760 memset(wep_cmd, 0, cmd_size +
761 (sizeof(struct iwl_wep_key) * WEP_KEYS_MAX));
762
763 for (i = 0; i < WEP_KEYS_MAX ; i++) {
764 wep_cmd->key[i].key_index = i;
Johannes Bergc10afb62010-08-23 10:46:43 +0200765 if (ctx->wep_keys[i].key_size) {
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700766 wep_cmd->key[i].key_offset = i;
767 not_empty = 1;
768 } else {
769 wep_cmd->key[i].key_offset = WEP_INVALID_OFFSET;
770 }
771
Johannes Bergc10afb62010-08-23 10:46:43 +0200772 wep_cmd->key[i].key_size = ctx->wep_keys[i].key_size;
773 memcpy(&wep_cmd->key[i].key[3], ctx->wep_keys[i].key,
774 ctx->wep_keys[i].key_size);
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700775 }
776
777 wep_cmd->global_key_type = WEP_KEY_WEP_TYPE;
778 wep_cmd->num_keys = WEP_KEYS_MAX;
779
780 cmd_size += sizeof(struct iwl_wep_key) * WEP_KEYS_MAX;
781
782 cmd.len = cmd_size;
783
784 if (not_empty || send_if_empty)
785 return iwl_send_cmd(priv, &cmd);
786 else
787 return 0;
788}
Johannes Berg335348b2010-03-30 10:11:46 -0700789
Johannes Bergc10afb62010-08-23 10:46:43 +0200790int iwl_restore_default_wep_keys(struct iwl_priv *priv,
791 struct iwl_rxon_context *ctx)
Johannes Berg335348b2010-03-30 10:11:46 -0700792{
Johannes Berga24d52f2010-08-06 16:17:53 +0200793 lockdep_assert_held(&priv->mutex);
Johannes Berg335348b2010-03-30 10:11:46 -0700794
Johannes Bergc10afb62010-08-23 10:46:43 +0200795 return iwl_send_static_wepkey_cmd(priv, ctx, false);
Johannes Berg335348b2010-03-30 10:11:46 -0700796}
797EXPORT_SYMBOL(iwl_restore_default_wep_keys);
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700798
799int iwl_remove_default_wep_key(struct iwl_priv *priv,
Johannes Bergc10afb62010-08-23 10:46:43 +0200800 struct iwl_rxon_context *ctx,
Emmanuel Grumbach80fb47a2008-04-14 21:16:08 -0700801 struct ieee80211_key_conf *keyconf)
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700802{
803 int ret;
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700804
Johannes Berga24d52f2010-08-06 16:17:53 +0200805 lockdep_assert_held(&priv->mutex);
Johannes Berg72e15d72010-02-19 11:42:32 -0800806
Reinette Chatre2d1bb9e2009-07-17 09:30:18 -0700807 IWL_DEBUG_WEP(priv, "Removing default WEP key: idx=%d\n",
808 keyconf->keyidx);
Emmanuel Grumbach80fb47a2008-04-14 21:16:08 -0700809
Johannes Bergc10afb62010-08-23 10:46:43 +0200810 memset(&ctx->wep_keys[keyconf->keyidx], 0, sizeof(ctx->wep_keys[0]));
Reinette Chatre2d1bb9e2009-07-17 09:30:18 -0700811 if (iwl_is_rfkill(priv)) {
812 IWL_DEBUG_WEP(priv, "Not sending REPLY_WEPKEY command due to RFKILL.\n");
Johannes Berg72e15d72010-02-19 11:42:32 -0800813 /* but keys in device are clear anyway so return success */
Reinette Chatre2d1bb9e2009-07-17 09:30:18 -0700814 return 0;
815 }
Johannes Bergc10afb62010-08-23 10:46:43 +0200816 ret = iwl_send_static_wepkey_cmd(priv, ctx, 1);
Tomas Winklere1623442009-01-27 14:27:56 -0800817 IWL_DEBUG_WEP(priv, "Remove default WEP key: idx=%d ret=%d\n",
Emmanuel Grumbach4564ce82008-06-12 09:47:09 +0800818 keyconf->keyidx, ret);
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700819
820 return ret;
821}
Tomas Winkler27aaba02008-05-05 10:22:44 +0800822EXPORT_SYMBOL(iwl_remove_default_wep_key);
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700823
824int iwl_set_default_wep_key(struct iwl_priv *priv,
Johannes Berg2995baf2010-08-23 10:46:42 +0200825 struct iwl_rxon_context *ctx,
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700826 struct ieee80211_key_conf *keyconf)
827{
828 int ret;
Johannes Berg72e15d72010-02-19 11:42:32 -0800829
Johannes Berga24d52f2010-08-06 16:17:53 +0200830 lockdep_assert_held(&priv->mutex);
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700831
Emmanuel Grumbach4564ce82008-06-12 09:47:09 +0800832 if (keyconf->keylen != WEP_KEY_LEN_128 &&
833 keyconf->keylen != WEP_KEY_LEN_64) {
Tomas Winklere1623442009-01-27 14:27:56 -0800834 IWL_DEBUG_WEP(priv, "Bad WEP key length %d\n", keyconf->keylen);
Emmanuel Grumbach4564ce82008-06-12 09:47:09 +0800835 return -EINVAL;
836 }
837
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700838 keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;
Emmanuel Grumbachccc038a2008-05-15 13:54:09 +0800839 keyconf->hw_key_idx = HW_KEY_DEFAULT;
Johannes Berg2995baf2010-08-23 10:46:42 +0200840 priv->stations[ctx->ap_sta_id].keyinfo.cipher = keyconf->cipher;
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700841
Johannes Bergc10afb62010-08-23 10:46:43 +0200842 ctx->wep_keys[keyconf->keyidx].key_size = keyconf->keylen;
843 memcpy(&ctx->wep_keys[keyconf->keyidx].key, &keyconf->key,
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700844 keyconf->keylen);
845
Johannes Bergc10afb62010-08-23 10:46:43 +0200846 ret = iwl_send_static_wepkey_cmd(priv, ctx, false);
Tomas Winklere1623442009-01-27 14:27:56 -0800847 IWL_DEBUG_WEP(priv, "Set default WEP key: len=%d idx=%d ret=%d\n",
Emmanuel Grumbach4564ce82008-06-12 09:47:09 +0800848 keyconf->keylen, keyconf->keyidx, ret);
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700849
850 return ret;
851}
Tomas Winkler27aaba02008-05-05 10:22:44 +0800852EXPORT_SYMBOL(iwl_set_default_wep_key);
Emmanuel Grumbach6974e362008-04-14 21:16:06 -0700853
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700854static int iwl_set_wep_dynamic_key_info(struct iwl_priv *priv,
Johannes Berga194e322010-08-27 08:53:46 -0700855 struct iwl_rxon_context *ctx,
856 struct ieee80211_key_conf *keyconf,
857 u8 sta_id)
Emmanuel Grumbach0211ddd2008-04-14 21:16:07 -0700858{
859 unsigned long flags;
860 __le16 key_flags = 0;
Johannes Berge6666742010-06-14 08:32:24 -0700861 struct iwl_addsta_cmd sta_cmd;
862
863 lockdep_assert_held(&priv->mutex);
Emmanuel Grumbach0211ddd2008-04-14 21:16:07 -0700864
865 keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV;
Emmanuel Grumbach0211ddd2008-04-14 21:16:07 -0700866
867 key_flags |= (STA_KEY_FLG_WEP | STA_KEY_FLG_MAP_KEY_MSK);
868 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
869 key_flags &= ~STA_KEY_FLG_INVALID;
870
871 if (keyconf->keylen == WEP_KEY_LEN_128)
872 key_flags |= STA_KEY_FLG_KEY_SIZE_MSK;
873
Johannes Berga194e322010-08-27 08:53:46 -0700874 if (sta_id == ctx->bcast_sta_id)
Emmanuel Grumbach0211ddd2008-04-14 21:16:07 -0700875 key_flags |= STA_KEY_MULTICAST_MSK;
876
877 spin_lock_irqsave(&priv->sta_lock, flags);
878
Johannes Berg97359d12010-08-10 09:46:38 +0200879 priv->stations[sta_id].keyinfo.cipher = keyconf->cipher;
Emmanuel Grumbach0211ddd2008-04-14 21:16:07 -0700880 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
881 priv->stations[sta_id].keyinfo.keyidx = keyconf->keyidx;
882
883 memcpy(priv->stations[sta_id].keyinfo.key,
884 keyconf->key, keyconf->keylen);
885
886 memcpy(&priv->stations[sta_id].sta.key.key[3],
887 keyconf->key, keyconf->keylen);
888
Emmanuel Grumbach3ec47732008-04-17 16:03:36 -0700889 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
890 == STA_KEY_FLG_NO_ENC)
891 priv->stations[sta_id].sta.key.key_offset =
Emmanuel Grumbach80fb47a2008-04-14 21:16:08 -0700892 iwl_get_free_ucode_key_index(priv);
Emmanuel Grumbach3ec47732008-04-17 16:03:36 -0700893 /* else, we are overriding an existing key => no need to allocated room
894 * in uCode. */
Emmanuel Grumbach0211ddd2008-04-14 21:16:07 -0700895
Tomas Winkler40a9a822008-11-25 23:29:03 +0200896 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
Jiri Slabye724b8f2009-01-05 17:06:06 +0100897 "no space for a new key");
Tomas Winkler40a9a822008-11-25 23:29:03 +0200898
Emmanuel Grumbach3ec47732008-04-17 16:03:36 -0700899 priv->stations[sta_id].sta.key.key_flags = key_flags;
Emmanuel Grumbach0211ddd2008-04-14 21:16:07 -0700900 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
901 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
902
Johannes Berge6666742010-06-14 08:32:24 -0700903 memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd));
Emmanuel Grumbach0211ddd2008-04-14 21:16:07 -0700904 spin_unlock_irqrestore(&priv->sta_lock, flags);
905
Johannes Berge6666742010-06-14 08:32:24 -0700906 return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
Emmanuel Grumbach0211ddd2008-04-14 21:16:07 -0700907}
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700908
909static int iwl_set_ccmp_dynamic_key_info(struct iwl_priv *priv,
Johannes Berga194e322010-08-27 08:53:46 -0700910 struct iwl_rxon_context *ctx,
911 struct ieee80211_key_conf *keyconf,
912 u8 sta_id)
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700913{
914 unsigned long flags;
915 __le16 key_flags = 0;
Johannes Berge6666742010-06-14 08:32:24 -0700916 struct iwl_addsta_cmd sta_cmd;
917
918 lockdep_assert_held(&priv->mutex);
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700919
920 key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK);
921 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
922 key_flags &= ~STA_KEY_FLG_INVALID;
923
Johannes Berga194e322010-08-27 08:53:46 -0700924 if (sta_id == ctx->bcast_sta_id)
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700925 key_flags |= STA_KEY_MULTICAST_MSK;
926
927 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700928
929 spin_lock_irqsave(&priv->sta_lock, flags);
Johannes Berg97359d12010-08-10 09:46:38 +0200930 priv->stations[sta_id].keyinfo.cipher = keyconf->cipher;
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700931 priv->stations[sta_id].keyinfo.keylen = keyconf->keylen;
932
933 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key,
934 keyconf->keylen);
935
936 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key,
937 keyconf->keylen);
938
Emmanuel Grumbach3ec47732008-04-17 16:03:36 -0700939 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
940 == STA_KEY_FLG_NO_ENC)
941 priv->stations[sta_id].sta.key.key_offset =
942 iwl_get_free_ucode_key_index(priv);
943 /* else, we are overriding an existing key => no need to allocated room
944 * in uCode. */
945
Tomas Winkler40a9a822008-11-25 23:29:03 +0200946 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
Jiri Slabye724b8f2009-01-05 17:06:06 +0100947 "no space for a new key");
Tomas Winkler40a9a822008-11-25 23:29:03 +0200948
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700949 priv->stations[sta_id].sta.key.key_flags = key_flags;
950 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
951 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
952
Johannes Berge6666742010-06-14 08:32:24 -0700953 memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd));
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700954 spin_unlock_irqrestore(&priv->sta_lock, flags);
955
Johannes Berge6666742010-06-14 08:32:24 -0700956 return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700957}
958
959static int iwl_set_tkip_dynamic_key_info(struct iwl_priv *priv,
Johannes Berga194e322010-08-27 08:53:46 -0700960 struct iwl_rxon_context *ctx,
961 struct ieee80211_key_conf *keyconf,
962 u8 sta_id)
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700963{
964 unsigned long flags;
965 int ret = 0;
Reinette Chatre299f5462009-04-30 13:56:31 -0700966 __le16 key_flags = 0;
967
968 key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK);
969 key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS);
970 key_flags &= ~STA_KEY_FLG_INVALID;
971
Johannes Berga194e322010-08-27 08:53:46 -0700972 if (sta_id == ctx->bcast_sta_id)
Reinette Chatre299f5462009-04-30 13:56:31 -0700973 key_flags |= STA_KEY_MULTICAST_MSK;
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700974
975 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
976 keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700977
978 spin_lock_irqsave(&priv->sta_lock, flags);
979
Johannes Berg97359d12010-08-10 09:46:38 +0200980 priv->stations[sta_id].keyinfo.cipher = keyconf->cipher;
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700981 priv->stations[sta_id].keyinfo.keylen = 16;
Emmanuel Grumbach3ec47732008-04-17 16:03:36 -0700982
983 if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK)
984 == STA_KEY_FLG_NO_ENC)
985 priv->stations[sta_id].sta.key.key_offset =
Emmanuel Grumbach77bab602008-04-15 16:01:44 -0700986 iwl_get_free_ucode_key_index(priv);
Emmanuel Grumbach3ec47732008-04-17 16:03:36 -0700987 /* else, we are overriding an existing key => no need to allocated room
988 * in uCode. */
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700989
Tomas Winkler40a9a822008-11-25 23:29:03 +0200990 WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET,
Jiri Slabye724b8f2009-01-05 17:06:06 +0100991 "no space for a new key");
Tomas Winkler40a9a822008-11-25 23:29:03 +0200992
Reinette Chatre299f5462009-04-30 13:56:31 -0700993 priv->stations[sta_id].sta.key.key_flags = key_flags;
994
995
Emmanuel Grumbach74805132008-04-14 21:16:09 -0700996 /* This copy is acutally not needed: we get the key with each TX */
997 memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key, 16);
998
999 memcpy(priv->stations[sta_id].sta.key.key, keyconf->key, 16);
1000
1001 spin_unlock_irqrestore(&priv->sta_lock, flags);
1002
1003 return ret;
1004}
1005
Tomas Winkler9f586712008-11-12 13:14:05 -08001006void iwl_update_tkip_key(struct iwl_priv *priv,
Johannes Berga194e322010-08-27 08:53:46 -07001007 struct iwl_rxon_context *ctx,
1008 struct ieee80211_key_conf *keyconf,
1009 struct ieee80211_sta *sta, u32 iv32, u16 *phase1key)
Tomas Winkler9f586712008-11-12 13:14:05 -08001010{
Johannes Bergbdbb6122010-04-30 13:53:37 -07001011 u8 sta_id;
Tomas Winkler9f586712008-11-12 13:14:05 -08001012 unsigned long flags;
Tomas Winkler9f586712008-11-12 13:14:05 -08001013 int i;
Tomas Winkler9f586712008-11-12 13:14:05 -08001014
Tomas Winkler9f586712008-11-12 13:14:05 -08001015 if (iwl_scan_cancel(priv)) {
1016 /* cancel scan failed, just live w/ bad key and rely
1017 briefly on SW decryption */
1018 return;
1019 }
1020
Johannes Berga194e322010-08-27 08:53:46 -07001021 sta_id = iwl_sta_id_or_broadcast(priv, ctx, sta);
Johannes Berg0af8bca2010-04-30 14:08:00 -07001022 if (sta_id == IWL_INVALID_STATION)
1023 return;
1024
Tomas Winkler9f586712008-11-12 13:14:05 -08001025 spin_lock_irqsave(&priv->sta_lock, flags);
1026
Tomas Winkler9f586712008-11-12 13:14:05 -08001027 priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32;
1028
1029 for (i = 0; i < 5; i++)
1030 priv->stations[sta_id].sta.key.tkip_rx_ttak[i] =
1031 cpu_to_le16(phase1key[i]);
1032
1033 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1034 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
1035
1036 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
1037
1038 spin_unlock_irqrestore(&priv->sta_lock, flags);
1039
1040}
1041EXPORT_SYMBOL(iwl_update_tkip_key);
1042
Emmanuel Grumbach3ec47732008-04-17 16:03:36 -07001043int iwl_remove_dynamic_key(struct iwl_priv *priv,
Johannes Bergc10afb62010-08-23 10:46:43 +02001044 struct iwl_rxon_context *ctx,
1045 struct ieee80211_key_conf *keyconf,
1046 u8 sta_id)
Emmanuel Grumbach74805132008-04-14 21:16:09 -07001047{
1048 unsigned long flags;
Emmanuel Grumbach3ec47732008-04-17 16:03:36 -07001049 u16 key_flags;
1050 u8 keyidx;
Johannes Berge6666742010-06-14 08:32:24 -07001051 struct iwl_addsta_cmd sta_cmd;
1052
1053 lockdep_assert_held(&priv->mutex);
Emmanuel Grumbach74805132008-04-14 21:16:09 -07001054
Johannes Bergc10afb62010-08-23 10:46:43 +02001055 ctx->key_mapping_keys--;
Emmanuel Grumbach74805132008-04-14 21:16:09 -07001056
1057 spin_lock_irqsave(&priv->sta_lock, flags);
Emmanuel Grumbach3ec47732008-04-17 16:03:36 -07001058 key_flags = le16_to_cpu(priv->stations[sta_id].sta.key.key_flags);
1059 keyidx = (key_flags >> STA_KEY_FLG_KEYID_POS) & 0x3;
1060
Tomas Winklere1623442009-01-27 14:27:56 -08001061 IWL_DEBUG_WEP(priv, "Remove dynamic key: idx=%d sta=%d\n",
Emmanuel Grumbach4564ce82008-06-12 09:47:09 +08001062 keyconf->keyidx, sta_id);
1063
Emmanuel Grumbach3ec47732008-04-17 16:03:36 -07001064 if (keyconf->keyidx != keyidx) {
1065 /* We need to remove a key with index different that the one
1066 * in the uCode. This means that the key we need to remove has
1067 * been replaced by another one with different index.
1068 * Don't do anything and return ok
1069 */
1070 spin_unlock_irqrestore(&priv->sta_lock, flags);
1071 return 0;
1072 }
1073
Tomas Winkler40a9a822008-11-25 23:29:03 +02001074 if (priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET) {
Winkler, Tomas39aadf82008-12-19 10:37:32 +08001075 IWL_WARN(priv, "Removing wrong key %d 0x%x\n",
Tomas Winkler40a9a822008-11-25 23:29:03 +02001076 keyconf->keyidx, key_flags);
1077 spin_unlock_irqrestore(&priv->sta_lock, flags);
1078 return 0;
1079 }
1080
Emmanuel Grumbach74805132008-04-14 21:16:09 -07001081 if (!test_and_clear_bit(priv->stations[sta_id].sta.key.key_offset,
1082 &priv->ucode_key_table))
Winkler, Tomas15b16872008-12-19 10:37:33 +08001083 IWL_ERR(priv, "index %d not used in uCode key table.\n",
Emmanuel Grumbach74805132008-04-14 21:16:09 -07001084 priv->stations[sta_id].sta.key.key_offset);
1085 memset(&priv->stations[sta_id].keyinfo, 0,
Tomas Winkler6def9762008-05-05 10:22:31 +08001086 sizeof(struct iwl_hw_key));
Emmanuel Grumbach74805132008-04-14 21:16:09 -07001087 memset(&priv->stations[sta_id].sta.key, 0,
1088 sizeof(struct iwl4965_keyinfo));
Emmanuel Grumbach3ec47732008-04-17 16:03:36 -07001089 priv->stations[sta_id].sta.key.key_flags =
1090 STA_KEY_FLG_NO_ENC | STA_KEY_FLG_INVALID;
1091 priv->stations[sta_id].sta.key.key_offset = WEP_INVALID_OFFSET;
Emmanuel Grumbach74805132008-04-14 21:16:09 -07001092 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK;
1093 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
Emmanuel Grumbach74805132008-04-14 21:16:09 -07001094
Reinette Chatre2d1bb9e2009-07-17 09:30:18 -07001095 if (iwl_is_rfkill(priv)) {
Frans Pop91dd6c22010-03-24 14:19:58 -07001096 IWL_DEBUG_WEP(priv, "Not sending REPLY_ADD_STA command because RFKILL enabled.\n");
Reinette Chatre2d1bb9e2009-07-17 09:30:18 -07001097 spin_unlock_irqrestore(&priv->sta_lock, flags);
1098 return 0;
1099 }
Johannes Berge6666742010-06-14 08:32:24 -07001100 memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd));
Emmanuel Grumbach3ec47732008-04-17 16:03:36 -07001101 spin_unlock_irqrestore(&priv->sta_lock, flags);
Johannes Berge6666742010-06-14 08:32:24 -07001102
1103 return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
Emmanuel Grumbach74805132008-04-14 21:16:09 -07001104}
Tomas Winkler27aaba02008-05-05 10:22:44 +08001105EXPORT_SYMBOL(iwl_remove_dynamic_key);
Emmanuel Grumbach74805132008-04-14 21:16:09 -07001106
Johannes Berga194e322010-08-27 08:53:46 -07001107int iwl_set_dynamic_key(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
1108 struct ieee80211_key_conf *keyconf, u8 sta_id)
Emmanuel Grumbach74805132008-04-14 21:16:09 -07001109{
1110 int ret;
1111
Johannes Berge6666742010-06-14 08:32:24 -07001112 lockdep_assert_held(&priv->mutex);
1113
Johannes Bergc10afb62010-08-23 10:46:43 +02001114 ctx->key_mapping_keys++;
Emmanuel Grumbachccc038a2008-05-15 13:54:09 +08001115 keyconf->hw_key_idx = HW_KEY_DYNAMIC;
Emmanuel Grumbach74805132008-04-14 21:16:09 -07001116
Johannes Berg97359d12010-08-10 09:46:38 +02001117 switch (keyconf->cipher) {
1118 case WLAN_CIPHER_SUITE_CCMP:
Johannes Berga194e322010-08-27 08:53:46 -07001119 ret = iwl_set_ccmp_dynamic_key_info(priv, ctx, keyconf, sta_id);
Emmanuel Grumbach74805132008-04-14 21:16:09 -07001120 break;
Johannes Berg97359d12010-08-10 09:46:38 +02001121 case WLAN_CIPHER_SUITE_TKIP:
Johannes Berga194e322010-08-27 08:53:46 -07001122 ret = iwl_set_tkip_dynamic_key_info(priv, ctx, keyconf, sta_id);
Emmanuel Grumbach74805132008-04-14 21:16:09 -07001123 break;
Johannes Berg97359d12010-08-10 09:46:38 +02001124 case WLAN_CIPHER_SUITE_WEP40:
1125 case WLAN_CIPHER_SUITE_WEP104:
Johannes Berga194e322010-08-27 08:53:46 -07001126 ret = iwl_set_wep_dynamic_key_info(priv, ctx, keyconf, sta_id);
Emmanuel Grumbach74805132008-04-14 21:16:09 -07001127 break;
1128 default:
Winkler, Tomas15b16872008-12-19 10:37:33 +08001129 IWL_ERR(priv,
Johannes Berg97359d12010-08-10 09:46:38 +02001130 "Unknown alg: %s cipher = %x\n", __func__,
1131 keyconf->cipher);
Emmanuel Grumbach74805132008-04-14 21:16:09 -07001132 ret = -EINVAL;
1133 }
1134
Johannes Berg97359d12010-08-10 09:46:38 +02001135 IWL_DEBUG_WEP(priv, "Set dynamic key: cipher=%x len=%d idx=%d sta=%d ret=%d\n",
1136 keyconf->cipher, keyconf->keylen, keyconf->keyidx,
Emmanuel Grumbach4564ce82008-06-12 09:47:09 +08001137 sta_id, ret);
1138
Emmanuel Grumbach74805132008-04-14 21:16:09 -07001139 return ret;
1140}
Tomas Winkler27aaba02008-05-05 10:22:44 +08001141EXPORT_SYMBOL(iwl_set_dynamic_key);
Emmanuel Grumbach74805132008-04-14 21:16:09 -07001142
Tomas Winkler66c73db2008-04-15 16:01:40 -07001143#ifdef CONFIG_IWLWIFI_DEBUG
1144static void iwl_dump_lq_cmd(struct iwl_priv *priv,
1145 struct iwl_link_quality_cmd *lq)
1146{
1147 int i;
Tomas Winklere1623442009-01-27 14:27:56 -08001148 IWL_DEBUG_RATE(priv, "lq station id 0x%x\n", lq->sta_id);
1149 IWL_DEBUG_RATE(priv, "lq ant 0x%X 0x%X\n",
Tomas Winkler66c73db2008-04-15 16:01:40 -07001150 lq->general_params.single_stream_ant_msk,
1151 lq->general_params.dual_stream_ant_msk);
1152
1153 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++)
Tomas Winklere1623442009-01-27 14:27:56 -08001154 IWL_DEBUG_RATE(priv, "lq index %d 0x%X\n",
Tomas Winkler66c73db2008-04-15 16:01:40 -07001155 i, lq->rs_table[i].rate_n_flags);
1156}
1157#else
1158static inline void iwl_dump_lq_cmd(struct iwl_priv *priv,
1159 struct iwl_link_quality_cmd *lq)
1160{
1161}
1162#endif
1163
Reinette Chatrefe6b23d2010-02-22 16:24:47 -08001164/**
Reinette Chatre3bce6062010-04-13 16:11:19 -07001165 * is_lq_table_valid() - Test one aspect of LQ cmd for validity
1166 *
1167 * It sometimes happens when a HT rate has been in use and we
1168 * loose connectivity with AP then mac80211 will first tell us that the
1169 * current channel is not HT anymore before removing the station. In such a
1170 * scenario the RXON flags will be updated to indicate we are not
1171 * communicating HT anymore, but the LQ command may still contain HT rates.
1172 * Test for this to prevent driver from sending LQ command between the time
1173 * RXON flags are updated and when LQ command is updated.
1174 */
1175static bool is_lq_table_valid(struct iwl_priv *priv,
1176 struct iwl_link_quality_cmd *lq)
1177{
1178 int i;
1179 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
Johannes Berg246ed352010-08-23 10:46:32 +02001180#if !TODO
1181 struct iwl_rxon_context *ctx =
1182 &priv->contexts[IWL_RXON_CTX_BSS];
1183#endif
Reinette Chatre3bce6062010-04-13 16:11:19 -07001184
1185 if (ht_conf->is_ht)
1186 return true;
1187
1188 IWL_DEBUG_INFO(priv, "Channel %u is not an HT channel\n",
Johannes Berg246ed352010-08-23 10:46:32 +02001189 ctx->active.channel);
Reinette Chatre3bce6062010-04-13 16:11:19 -07001190 for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) {
1191 if (le32_to_cpu(lq->rs_table[i].rate_n_flags) & RATE_MCS_HT_MSK) {
1192 IWL_DEBUG_INFO(priv,
1193 "index %d of LQ expects HT channel\n",
1194 i);
1195 return false;
1196 }
1197 }
1198 return true;
1199}
1200
1201/**
Reinette Chatrefe6b23d2010-02-22 16:24:47 -08001202 * iwl_send_lq_cmd() - Send link quality command
1203 * @init: This command is sent as part of station initialization right
1204 * after station has been added.
1205 *
1206 * The link quality command is sent as the last step of station creation.
1207 * This is the special case in which init is set and we call a callback in
1208 * this case to clear the state indicating that station creation is in
1209 * progress.
1210 */
Tomas Winkler66c73db2008-04-15 16:01:40 -07001211int iwl_send_lq_cmd(struct iwl_priv *priv,
Reinette Chatrefe6b23d2010-02-22 16:24:47 -08001212 struct iwl_link_quality_cmd *lq, u8 flags, bool init)
Tomas Winkler66c73db2008-04-15 16:01:40 -07001213{
Reinette Chatrefe6b23d2010-02-22 16:24:47 -08001214 int ret = 0;
1215 unsigned long flags_spin;
1216
Tomas Winkler66c73db2008-04-15 16:01:40 -07001217 struct iwl_host_cmd cmd = {
1218 .id = REPLY_TX_LINK_QUALITY_CMD,
1219 .len = sizeof(struct iwl_link_quality_cmd),
Johannes Bergc2acea82009-07-24 11:13:05 -07001220 .flags = flags,
Tomas Winkler66c73db2008-04-15 16:01:40 -07001221 .data = lq,
1222 };
1223
Johannes Berg76c3c692010-03-30 02:46:29 -07001224 if (WARN_ON(lq->sta_id == IWL_INVALID_STATION))
Tomas Winkler66c73db2008-04-15 16:01:40 -07001225 return -EINVAL;
1226
Tomas Winkler3ac7f142008-07-21 02:40:14 +03001227 iwl_dump_lq_cmd(priv, lq);
Reinette Chatrefe6b23d2010-02-22 16:24:47 -08001228 BUG_ON(init && (cmd.flags & CMD_ASYNC));
Tomas Winkler66c73db2008-04-15 16:01:40 -07001229
Reinette Chatre3bce6062010-04-13 16:11:19 -07001230 if (is_lq_table_valid(priv, lq))
1231 ret = iwl_send_cmd(priv, &cmd);
1232 else
1233 ret = -EINVAL;
Reinette Chatred2e210a2010-04-23 10:33:33 -07001234
1235 if (cmd.flags & CMD_ASYNC)
Reinette Chatrefe6b23d2010-02-22 16:24:47 -08001236 return ret;
Tomas Winkler66c73db2008-04-15 16:01:40 -07001237
Reinette Chatrefe6b23d2010-02-22 16:24:47 -08001238 if (init) {
Frans Pop91dd6c22010-03-24 14:19:58 -07001239 IWL_DEBUG_INFO(priv, "init LQ command complete, clearing sta addition status for sta %d\n",
Reinette Chatrefe6b23d2010-02-22 16:24:47 -08001240 lq->sta_id);
1241 spin_lock_irqsave(&priv->sta_lock, flags_spin);
1242 priv->stations[lq->sta_id].used &= ~IWL_STA_UCODE_INPROGRESS;
1243 spin_unlock_irqrestore(&priv->sta_lock, flags_spin);
1244 }
Reinette Chatred2e210a2010-04-23 10:33:33 -07001245 return ret;
Tomas Winkler66c73db2008-04-15 16:01:40 -07001246}
1247EXPORT_SYMBOL(iwl_send_lq_cmd);
1248
Tomas Winkler4f40e4d2008-05-15 13:54:04 +08001249/**
Johannes Berg2c810cc2010-04-29 00:53:29 -07001250 * iwl_alloc_bcast_station - add broadcast station into driver's station table.
1251 *
1252 * This adds the broadcast station into the driver's station table
1253 * and marks it driver active, so that it will be restored to the
1254 * device at the next best time.
Reinette Chatre9a9ca652009-10-30 14:36:12 -07001255 */
Johannes Berga194e322010-08-27 08:53:46 -07001256int iwl_alloc_bcast_station(struct iwl_priv *priv, struct iwl_rxon_context *ctx,
1257 bool init_lq)
Reinette Chatre9a9ca652009-10-30 14:36:12 -07001258{
Johannes Berg2c810cc2010-04-29 00:53:29 -07001259 struct iwl_link_quality_cmd *link_cmd;
1260 unsigned long flags;
1261 u8 sta_id;
Reinette Chatre9a9ca652009-10-30 14:36:12 -07001262
Johannes Berg2c810cc2010-04-29 00:53:29 -07001263 spin_lock_irqsave(&priv->sta_lock, flags);
Johannes Berga194e322010-08-27 08:53:46 -07001264 sta_id = iwl_prep_station(priv, ctx, iwl_bcast_addr, false, NULL);
Johannes Berg2c810cc2010-04-29 00:53:29 -07001265 if (sta_id == IWL_INVALID_STATION) {
1266 IWL_ERR(priv, "Unable to prepare broadcast station\n");
1267 spin_unlock_irqrestore(&priv->sta_lock, flags);
1268
1269 return -EINVAL;
1270 }
1271
1272 priv->stations[sta_id].used |= IWL_STA_DRIVER_ACTIVE;
1273 priv->stations[sta_id].used |= IWL_STA_BCAST;
1274 spin_unlock_irqrestore(&priv->sta_lock, flags);
1275
1276 if (init_lq) {
1277 link_cmd = iwl_sta_alloc_lq(priv, sta_id);
1278 if (!link_cmd) {
1279 IWL_ERR(priv,
1280 "Unable to initialize rate scaling for bcast station.\n");
1281 return -ENOMEM;
1282 }
1283
1284 spin_lock_irqsave(&priv->sta_lock, flags);
1285 priv->stations[sta_id].lq = link_cmd;
1286 spin_unlock_irqrestore(&priv->sta_lock, flags);
1287 }
1288
1289 return 0;
1290}
1291EXPORT_SYMBOL_GPL(iwl_alloc_bcast_station);
1292
Daniel Halperin278c2f62010-06-14 13:10:29 -07001293/**
1294 * iwl_update_bcast_station - update broadcast station's LQ command
1295 *
1296 * Only used by iwlagn. Placed here to have all bcast station management
1297 * code together.
1298 */
Johannes Berga194e322010-08-27 08:53:46 -07001299static int iwl_update_bcast_station(struct iwl_priv *priv,
1300 struct iwl_rxon_context *ctx)
Daniel Halperin278c2f62010-06-14 13:10:29 -07001301{
1302 unsigned long flags;
1303 struct iwl_link_quality_cmd *link_cmd;
Johannes Berga194e322010-08-27 08:53:46 -07001304 u8 sta_id = ctx->bcast_sta_id;
Daniel Halperin278c2f62010-06-14 13:10:29 -07001305
1306 link_cmd = iwl_sta_alloc_lq(priv, sta_id);
1307 if (!link_cmd) {
1308 IWL_ERR(priv, "Unable to initialize rate scaling for bcast station.\n");
1309 return -ENOMEM;
1310 }
1311
1312 spin_lock_irqsave(&priv->sta_lock, flags);
1313 if (priv->stations[sta_id].lq)
1314 kfree(priv->stations[sta_id].lq);
1315 else
1316 IWL_DEBUG_INFO(priv, "Bcast station rate scaling has not been initialized yet.\n");
1317 priv->stations[sta_id].lq = link_cmd;
1318 spin_unlock_irqrestore(&priv->sta_lock, flags);
1319
1320 return 0;
1321}
Daniel Halperin278c2f62010-06-14 13:10:29 -07001322
Johannes Berga194e322010-08-27 08:53:46 -07001323int iwl_update_bcast_stations(struct iwl_priv *priv)
1324{
1325 struct iwl_rxon_context *ctx;
1326 int ret = 0;
1327
1328 for_each_context(priv, ctx) {
1329 ret = iwl_update_bcast_station(priv, ctx);
1330 if (ret)
1331 break;
1332 }
1333
1334 return ret;
1335}
1336EXPORT_SYMBOL_GPL(iwl_update_bcast_stations);
1337
1338void iwl_dealloc_bcast_stations(struct iwl_priv *priv)
Reinette Chatre3459ab52010-01-22 14:22:49 -08001339{
Johannes Berg2c810cc2010-04-29 00:53:29 -07001340 unsigned long flags;
1341 int i;
Reinette Chatred2e210a2010-04-23 10:33:33 -07001342
Johannes Berg2c810cc2010-04-29 00:53:29 -07001343 spin_lock_irqsave(&priv->sta_lock, flags);
1344 for (i = 0; i < priv->hw_params.max_stations; i++) {
1345 if (!(priv->stations[i].used & IWL_STA_BCAST))
1346 continue;
Reinette Chatrefe6b23d2010-02-22 16:24:47 -08001347
Johannes Berg2c810cc2010-04-29 00:53:29 -07001348 priv->stations[i].used &= ~IWL_STA_UCODE_ACTIVE;
1349 priv->num_stations--;
1350 BUG_ON(priv->num_stations < 0);
1351 kfree(priv->stations[i].lq);
1352 priv->stations[i].lq = NULL;
1353 }
1354 spin_unlock_irqrestore(&priv->sta_lock, flags);
Reinette Chatre3459ab52010-01-22 14:22:49 -08001355}
Johannes Berga194e322010-08-27 08:53:46 -07001356EXPORT_SYMBOL_GPL(iwl_dealloc_bcast_stations);
Reinette Chatre3459ab52010-01-22 14:22:49 -08001357
1358/**
Tomas Winkler9f586712008-11-12 13:14:05 -08001359 * iwl_sta_tx_modify_enable_tid - Enable Tx for this TID in station table
Tomas Winkler5083e562008-05-29 16:35:15 +08001360 */
Johannes Berg4620fef2010-06-16 03:30:27 -07001361int iwl_sta_tx_modify_enable_tid(struct iwl_priv *priv, int sta_id, int tid)
Tomas Winkler5083e562008-05-29 16:35:15 +08001362{
1363 unsigned long flags;
Johannes Berg4620fef2010-06-16 03:30:27 -07001364 struct iwl_addsta_cmd sta_cmd;
1365
1366 lockdep_assert_held(&priv->mutex);
Tomas Winkler5083e562008-05-29 16:35:15 +08001367
1368 /* Remove "disable" flag, to enable Tx for this TID */
1369 spin_lock_irqsave(&priv->sta_lock, flags);
1370 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_TID_DISABLE_TX;
1371 priv->stations[sta_id].sta.tid_disable_tx &= cpu_to_le16(~(1 << tid));
1372 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
Johannes Berg4620fef2010-06-16 03:30:27 -07001373 memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd));
Reinette Chatre9c5ac092010-05-05 02:26:06 -07001374 spin_unlock_irqrestore(&priv->sta_lock, flags);
Johannes Berg4620fef2010-06-16 03:30:27 -07001375
1376 return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
Tomas Winkler5083e562008-05-29 16:35:15 +08001377}
Tomas Winkler9f586712008-11-12 13:14:05 -08001378EXPORT_SYMBOL(iwl_sta_tx_modify_enable_tid);
1379
Johannes Berg619753f2010-04-30 11:30:46 -07001380int iwl_sta_rx_agg_start(struct iwl_priv *priv, struct ieee80211_sta *sta,
1381 int tid, u16 ssn)
Tomas Winkler9f586712008-11-12 13:14:05 -08001382{
1383 unsigned long flags;
1384 int sta_id;
Johannes Berg4620fef2010-06-16 03:30:27 -07001385 struct iwl_addsta_cmd sta_cmd;
1386
1387 lockdep_assert_held(&priv->mutex);
Tomas Winkler9f586712008-11-12 13:14:05 -08001388
Johannes Berg619753f2010-04-30 11:30:46 -07001389 sta_id = iwl_sta_id(sta);
Tomas Winkler9f586712008-11-12 13:14:05 -08001390 if (sta_id == IWL_INVALID_STATION)
1391 return -ENXIO;
1392
1393 spin_lock_irqsave(&priv->sta_lock, flags);
1394 priv->stations[sta_id].sta.station_flags_msk = 0;
1395 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_ADDBA_TID_MSK;
1396 priv->stations[sta_id].sta.add_immediate_ba_tid = (u8)tid;
1397 priv->stations[sta_id].sta.add_immediate_ba_ssn = cpu_to_le16(ssn);
1398 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
Johannes Berg4620fef2010-06-16 03:30:27 -07001399 memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd));
Tomas Winkler9f586712008-11-12 13:14:05 -08001400 spin_unlock_irqrestore(&priv->sta_lock, flags);
1401
Johannes Berg4620fef2010-06-16 03:30:27 -07001402 return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
Tomas Winkler9f586712008-11-12 13:14:05 -08001403}
1404EXPORT_SYMBOL(iwl_sta_rx_agg_start);
1405
Johannes Berg619753f2010-04-30 11:30:46 -07001406int iwl_sta_rx_agg_stop(struct iwl_priv *priv, struct ieee80211_sta *sta,
1407 int tid)
Tomas Winkler9f586712008-11-12 13:14:05 -08001408{
1409 unsigned long flags;
Johannes Berg4620fef2010-06-16 03:30:27 -07001410 int sta_id;
1411 struct iwl_addsta_cmd sta_cmd;
1412
1413 lockdep_assert_held(&priv->mutex);
Tomas Winkler9f586712008-11-12 13:14:05 -08001414
Johannes Berg619753f2010-04-30 11:30:46 -07001415 sta_id = iwl_sta_id(sta);
Wey-Yi Guya2f1cbe2009-03-17 21:51:52 -07001416 if (sta_id == IWL_INVALID_STATION) {
1417 IWL_ERR(priv, "Invalid station for AGG tid %d\n", tid);
Tomas Winkler9f586712008-11-12 13:14:05 -08001418 return -ENXIO;
Wey-Yi Guya2f1cbe2009-03-17 21:51:52 -07001419 }
Tomas Winkler9f586712008-11-12 13:14:05 -08001420
1421 spin_lock_irqsave(&priv->sta_lock, flags);
1422 priv->stations[sta_id].sta.station_flags_msk = 0;
1423 priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_DELBA_TID_MSK;
1424 priv->stations[sta_id].sta.remove_immediate_ba_tid = (u8)tid;
1425 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
Johannes Berg4620fef2010-06-16 03:30:27 -07001426 memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd));
Tomas Winkler9f586712008-11-12 13:14:05 -08001427 spin_unlock_irqrestore(&priv->sta_lock, flags);
1428
Johannes Berg4620fef2010-06-16 03:30:27 -07001429 return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC);
Tomas Winkler9f586712008-11-12 13:14:05 -08001430}
1431EXPORT_SYMBOL(iwl_sta_rx_agg_stop);
1432
Johannes Berg6ab10ff2009-11-13 11:56:37 -08001433void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id)
Tomas Winkler9f586712008-11-12 13:14:05 -08001434{
1435 unsigned long flags;
1436
1437 spin_lock_irqsave(&priv->sta_lock, flags);
1438 priv->stations[sta_id].sta.station_flags &= ~STA_FLG_PWR_SAVE_MSK;
1439 priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK;
1440 priv->stations[sta_id].sta.sta.modify_mask = 0;
Johannes Berg6ab10ff2009-11-13 11:56:37 -08001441 priv->stations[sta_id].sta.sleep_tx_count = 0;
Tomas Winkler9f586712008-11-12 13:14:05 -08001442 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
Reinette Chatre9c5ac092010-05-05 02:26:06 -07001443 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
Tomas Winkler9f586712008-11-12 13:14:05 -08001444 spin_unlock_irqrestore(&priv->sta_lock, flags);
1445
Tomas Winkler9f586712008-11-12 13:14:05 -08001446}
Johannes Berg6ab10ff2009-11-13 11:56:37 -08001447EXPORT_SYMBOL(iwl_sta_modify_ps_wake);
Tomas Winkler9f586712008-11-12 13:14:05 -08001448
Johannes Berg6ab10ff2009-11-13 11:56:37 -08001449void iwl_sta_modify_sleep_tx_count(struct iwl_priv *priv, int sta_id, int cnt)
Tomas Winkler9f586712008-11-12 13:14:05 -08001450{
Johannes Berg6ab10ff2009-11-13 11:56:37 -08001451 unsigned long flags;
Tomas Winkler9f586712008-11-12 13:14:05 -08001452
Johannes Berg6ab10ff2009-11-13 11:56:37 -08001453 spin_lock_irqsave(&priv->sta_lock, flags);
1454 priv->stations[sta_id].sta.station_flags |= STA_FLG_PWR_SAVE_MSK;
1455 priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK;
1456 priv->stations[sta_id].sta.sta.modify_mask =
1457 STA_MODIFY_SLEEP_TX_COUNT_MSK;
1458 priv->stations[sta_id].sta.sleep_tx_count = cpu_to_le16(cnt);
1459 priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK;
Reinette Chatre9c5ac092010-05-05 02:26:06 -07001460 iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC);
Johannes Berg6ab10ff2009-11-13 11:56:37 -08001461 spin_unlock_irqrestore(&priv->sta_lock, flags);
Tomas Winkler9f586712008-11-12 13:14:05 -08001462
Tomas Winkler9f586712008-11-12 13:14:05 -08001463}
Wey-Yi Guy74bcdb32010-03-17 13:34:34 -07001464EXPORT_SYMBOL(iwl_sta_modify_sleep_tx_count);
Reinette Chatrefe6b23d2010-02-22 16:24:47 -08001465
1466int iwl_mac_sta_remove(struct ieee80211_hw *hw,
Johannes Bergfd1af152010-04-30 11:30:43 -07001467 struct ieee80211_vif *vif,
1468 struct ieee80211_sta *sta)
Reinette Chatrefe6b23d2010-02-22 16:24:47 -08001469{
Reinette Chatrefe6b23d2010-02-22 16:24:47 -08001470 struct iwl_priv *priv = hw->priv;
Johannes Bergfd1af152010-04-30 11:30:43 -07001471 struct iwl_station_priv_common *sta_common = (void *)sta->drv_priv;
1472 int ret;
1473
Reinette Chatrefe6b23d2010-02-22 16:24:47 -08001474 IWL_DEBUG_INFO(priv, "received request to remove station %pM\n",
1475 sta->addr);
Reinette Chatreda5ae1c2010-05-28 09:28:39 -07001476 mutex_lock(&priv->mutex);
1477 IWL_DEBUG_INFO(priv, "proceeding to remove station %pM\n",
1478 sta->addr);
Johannes Bergfd1af152010-04-30 11:30:43 -07001479 ret = iwl_remove_station(priv, sta_common->sta_id, sta->addr);
Reinette Chatrefe6b23d2010-02-22 16:24:47 -08001480 if (ret)
1481 IWL_ERR(priv, "Error removing station %pM\n",
1482 sta->addr);
Reinette Chatreda5ae1c2010-05-28 09:28:39 -07001483 mutex_unlock(&priv->mutex);
Reinette Chatrefe6b23d2010-02-22 16:24:47 -08001484 return ret;
1485}
1486EXPORT_SYMBOL(iwl_mac_sta_remove);