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6974e363 EG |
1 | /****************************************************************************** |
2 | * | |
1f447808 | 3 | * Copyright(c) 2003 - 2010 Intel Corporation. All rights reserved. |
6974e363 EG |
4 | * |
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: | |
759ef89f | 25 | * Intel Linux Wireless <ilw@linux.intel.com> |
6974e363 EG |
26 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 |
27 | * | |
28 | *****************************************************************************/ | |
29 | ||
30 | #include <net/mac80211.h> | |
947b13a7 | 31 | #include <linux/etherdevice.h> |
fe6b23dd | 32 | #include <linux/sched.h> |
6974e363 | 33 | |
3e0d4cb1 | 34 | #include "iwl-dev.h" |
6974e363 EG |
35 | #include "iwl-core.h" |
36 | #include "iwl-sta.h" | |
7a999bf0 | 37 | |
1fa97aae | 38 | /* priv->sta_lock must be held */ |
24e5c401 EG |
39 | static void iwl_sta_ucode_activate(struct iwl_priv *priv, u8 sta_id) |
40 | { | |
24e5c401 | 41 | |
c587de0b | 42 | if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) |
1fa97aae RC |
43 | IWL_ERR(priv, "ACTIVATE a non DRIVER active station id %u addr %pM\n", |
44 | sta_id, priv->stations[sta_id].sta.sta.addr); | |
24e5c401 | 45 | |
1fa97aae RC |
46 | if (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE) { |
47 | IWL_DEBUG_ASSOC(priv, | |
48 | "STA id %u addr %pM already present in uCode (according to driver)\n", | |
49 | sta_id, priv->stations[sta_id].sta.sta.addr); | |
50 | } else { | |
51 | priv->stations[sta_id].used |= IWL_STA_UCODE_ACTIVE; | |
52 | IWL_DEBUG_ASSOC(priv, "Added STA id %u addr %pM to uCode\n", | |
53 | sta_id, priv->stations[sta_id].sta.sta.addr); | |
54 | } | |
24e5c401 EG |
55 | } |
56 | ||
1fa97aae RC |
57 | static void iwl_process_add_sta_resp(struct iwl_priv *priv, |
58 | struct iwl_addsta_cmd *addsta, | |
59 | struct iwl_rx_packet *pkt, | |
60 | bool sync) | |
42132bce | 61 | { |
3257e5d4 | 62 | u8 sta_id = addsta->sta.sta_id; |
1fa97aae | 63 | unsigned long flags; |
42132bce | 64 | |
2f301227 | 65 | if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) { |
15b1687c | 66 | IWL_ERR(priv, "Bad return from REPLY_ADD_STA (0x%08X)\n", |
1fa97aae | 67 | pkt->hdr.flags); |
5696aea6 | 68 | return; |
42132bce TW |
69 | } |
70 | ||
1fa97aae RC |
71 | IWL_DEBUG_INFO(priv, "Processing response for adding station %u\n", |
72 | sta_id); | |
73 | ||
74 | spin_lock_irqsave(&priv->sta_lock, flags); | |
75 | ||
2f301227 | 76 | switch (pkt->u.add_sta.status) { |
42132bce | 77 | case ADD_STA_SUCCESS_MSK: |
1fa97aae | 78 | IWL_DEBUG_INFO(priv, "REPLY_ADD_STA PASSED\n"); |
24e5c401 | 79 | iwl_sta_ucode_activate(priv, sta_id); |
1fa97aae RC |
80 | break; |
81 | case ADD_STA_NO_ROOM_IN_TABLE: | |
82 | IWL_ERR(priv, "Adding station %d failed, no room in table.\n", | |
83 | sta_id); | |
84 | break; | |
85 | case ADD_STA_NO_BLOCK_ACK_RESOURCE: | |
86 | IWL_ERR(priv, "Adding station %d failed, no block ack resource.\n", | |
87 | sta_id); | |
88 | break; | |
89 | case ADD_STA_MODIFY_NON_EXIST_STA: | |
91dd6c27 | 90 | IWL_ERR(priv, "Attempting to modify non-existing station %d\n", |
1fa97aae RC |
91 | sta_id); |
92 | break; | |
42132bce | 93 | default: |
1fa97aae RC |
94 | IWL_DEBUG_ASSOC(priv, "Received REPLY_ADD_STA:(0x%08X)\n", |
95 | pkt->u.add_sta.status); | |
42132bce TW |
96 | break; |
97 | } | |
1fa97aae RC |
98 | |
99 | IWL_DEBUG_INFO(priv, "%s station id %u addr %pM\n", | |
100 | priv->stations[sta_id].sta.mode == | |
101 | STA_CONTROL_MODIFY_MSK ? "Modified" : "Added", | |
102 | sta_id, priv->stations[sta_id].sta.sta.addr); | |
103 | ||
104 | /* | |
105 | * XXX: The MAC address in the command buffer is often changed from | |
106 | * the original sent to the device. That is, the MAC address | |
107 | * written to the command buffer often is not the same MAC adress | |
108 | * read from the command buffer when the command returns. This | |
109 | * issue has not yet been resolved and this debugging is left to | |
110 | * observe the problem. | |
111 | */ | |
112 | IWL_DEBUG_INFO(priv, "%s station according to cmd buffer %pM\n", | |
113 | priv->stations[sta_id].sta.mode == | |
114 | STA_CONTROL_MODIFY_MSK ? "Modified" : "Added", | |
115 | addsta->sta.addr); | |
1fa97aae RC |
116 | spin_unlock_irqrestore(&priv->sta_lock, flags); |
117 | } | |
118 | ||
119 | static void iwl_add_sta_callback(struct iwl_priv *priv, | |
120 | struct iwl_device_cmd *cmd, | |
121 | struct iwl_rx_packet *pkt) | |
122 | { | |
123 | struct iwl_addsta_cmd *addsta = | |
124 | (struct iwl_addsta_cmd *)cmd->cmd.payload; | |
125 | ||
126 | iwl_process_add_sta_resp(priv, addsta, pkt, false); | |
127 | ||
42132bce TW |
128 | } |
129 | ||
17f841cd | 130 | int iwl_send_add_sta(struct iwl_priv *priv, |
133636de TW |
131 | struct iwl_addsta_cmd *sta, u8 flags) |
132 | { | |
2f301227 | 133 | struct iwl_rx_packet *pkt = NULL; |
133636de TW |
134 | int ret = 0; |
135 | u8 data[sizeof(*sta)]; | |
136 | struct iwl_host_cmd cmd = { | |
137 | .id = REPLY_ADD_STA, | |
c2acea8e | 138 | .flags = flags, |
133636de TW |
139 | .data = data, |
140 | }; | |
f875f518 | 141 | u8 sta_id __maybe_unused = sta->sta.sta_id; |
fe6b23dd RC |
142 | |
143 | IWL_DEBUG_INFO(priv, "Adding sta %u (%pM) %ssynchronously\n", | |
144 | sta_id, sta->sta.addr, flags & CMD_ASYNC ? "a" : ""); | |
133636de | 145 | |
42132bce | 146 | if (flags & CMD_ASYNC) |
c2acea8e | 147 | cmd.callback = iwl_add_sta_callback; |
42132bce | 148 | else |
c2acea8e | 149 | cmd.flags |= CMD_WANT_SKB; |
133636de TW |
150 | |
151 | cmd.len = priv->cfg->ops->utils->build_addsta_hcmd(sta, data); | |
152 | ret = iwl_send_cmd(priv, &cmd); | |
153 | ||
154 | if (ret || (flags & CMD_ASYNC)) | |
155 | return ret; | |
156 | ||
133636de | 157 | if (ret == 0) { |
1fa97aae RC |
158 | pkt = (struct iwl_rx_packet *)cmd.reply_page; |
159 | iwl_process_add_sta_resp(priv, sta, pkt, true); | |
133636de | 160 | } |
64a76b50 | 161 | iwl_free_pages(priv, cmd.reply_page); |
133636de TW |
162 | |
163 | return ret; | |
164 | } | |
17f841cd | 165 | EXPORT_SYMBOL(iwl_send_add_sta); |
947b13a7 | 166 | |
4f40e4d9 | 167 | static void iwl_set_ht_add_station(struct iwl_priv *priv, u8 index, |
d9fe60de | 168 | struct ieee80211_sta_ht_cap *sta_ht_inf) |
4f40e4d9 TW |
169 | { |
170 | __le32 sta_flags; | |
171 | u8 mimo_ps_mode; | |
172 | ||
173 | if (!sta_ht_inf || !sta_ht_inf->ht_supported) | |
174 | goto done; | |
175 | ||
00c5ae2f | 176 | mimo_ps_mode = (sta_ht_inf->cap & IEEE80211_HT_CAP_SM_PS) >> 2; |
3f3e0376 WYG |
177 | IWL_DEBUG_ASSOC(priv, "spatial multiplexing power save mode: %s\n", |
178 | (mimo_ps_mode == WLAN_HT_CAP_SM_PS_STATIC) ? | |
179 | "static" : | |
180 | (mimo_ps_mode == WLAN_HT_CAP_SM_PS_DYNAMIC) ? | |
181 | "dynamic" : "disabled"); | |
4f40e4d9 TW |
182 | |
183 | sta_flags = priv->stations[index].sta.station_flags; | |
184 | ||
185 | sta_flags &= ~(STA_FLG_RTS_MIMO_PROT_MSK | STA_FLG_MIMO_DIS_MSK); | |
186 | ||
187 | switch (mimo_ps_mode) { | |
00c5ae2f | 188 | case WLAN_HT_CAP_SM_PS_STATIC: |
4f40e4d9 TW |
189 | sta_flags |= STA_FLG_MIMO_DIS_MSK; |
190 | break; | |
00c5ae2f | 191 | case WLAN_HT_CAP_SM_PS_DYNAMIC: |
4f40e4d9 TW |
192 | sta_flags |= STA_FLG_RTS_MIMO_PROT_MSK; |
193 | break; | |
00c5ae2f | 194 | case WLAN_HT_CAP_SM_PS_DISABLED: |
4f40e4d9 TW |
195 | break; |
196 | default: | |
39aadf8c | 197 | IWL_WARN(priv, "Invalid MIMO PS mode %d\n", mimo_ps_mode); |
4f40e4d9 TW |
198 | break; |
199 | } | |
200 | ||
201 | sta_flags |= cpu_to_le32( | |
202 | (u32)sta_ht_inf->ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS); | |
203 | ||
204 | sta_flags |= cpu_to_le32( | |
205 | (u32)sta_ht_inf->ampdu_density << STA_FLG_AGG_MPDU_DENSITY_POS); | |
206 | ||
7aafef1c WYG |
207 | if (iwl_is_ht40_tx_allowed(priv, sta_ht_inf)) |
208 | sta_flags |= STA_FLG_HT40_EN_MSK; | |
4f40e4d9 | 209 | else |
7aafef1c | 210 | sta_flags &= ~STA_FLG_HT40_EN_MSK; |
4f40e4d9 TW |
211 | |
212 | priv->stations[index].sta.station_flags = sta_flags; | |
213 | done: | |
214 | return; | |
215 | } | |
4f40e4d9 TW |
216 | |
217 | /** | |
fe6b23dd RC |
218 | * iwl_prep_station - Prepare station information for addition |
219 | * | |
220 | * should be called with sta_lock held | |
4f40e4d9 | 221 | */ |
fe6b23dd RC |
222 | static u8 iwl_prep_station(struct iwl_priv *priv, const u8 *addr, |
223 | bool is_ap, | |
224 | struct ieee80211_sta_ht_cap *ht_info) | |
4f40e4d9 | 225 | { |
4f40e4d9 | 226 | struct iwl_station_entry *station; |
c587de0b | 227 | int i; |
fe6b23dd | 228 | u8 sta_id = IWL_INVALID_STATION; |
c587de0b | 229 | u16 rate; |
4f40e4d9 | 230 | |
4f40e4d9 | 231 | if (is_ap) |
24e5c401 | 232 | sta_id = IWL_AP_ID; |
4f40e4d9 | 233 | else if (is_broadcast_ether_addr(addr)) |
24e5c401 | 234 | sta_id = priv->hw_params.bcast_sta_id; |
4f40e4d9 TW |
235 | else |
236 | for (i = IWL_STA_ID; i < priv->hw_params.max_stations; i++) { | |
237 | if (!compare_ether_addr(priv->stations[i].sta.sta.addr, | |
238 | addr)) { | |
24e5c401 | 239 | sta_id = i; |
4f40e4d9 TW |
240 | break; |
241 | } | |
242 | ||
243 | if (!priv->stations[i].used && | |
24e5c401 EG |
244 | sta_id == IWL_INVALID_STATION) |
245 | sta_id = i; | |
4f40e4d9 TW |
246 | } |
247 | ||
fe6b23dd RC |
248 | /* |
249 | * These two conditions have the same outcome, but keep them | |
250 | * separate | |
251 | */ | |
252 | if (unlikely(sta_id == IWL_INVALID_STATION)) | |
253 | return sta_id; | |
254 | ||
255 | /* | |
256 | * uCode is not able to deal with multiple requests to add a | |
257 | * station. Keep track if one is in progress so that we do not send | |
258 | * another. | |
259 | */ | |
260 | if (priv->stations[sta_id].used & IWL_STA_UCODE_INPROGRESS) { | |
261 | IWL_DEBUG_INFO(priv, "STA %d already in process of being added.\n", | |
262 | sta_id); | |
24e5c401 | 263 | return sta_id; |
4f40e4d9 TW |
264 | } |
265 | ||
fe6b23dd RC |
266 | if ((priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE) && |
267 | (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE) && | |
24e5c401 | 268 | !compare_ether_addr(priv->stations[sta_id].sta.sta.addr, addr)) { |
fe6b23dd RC |
269 | IWL_DEBUG_ASSOC(priv, "STA %d (%pM) already added, not adding again.\n", |
270 | sta_id, addr); | |
24e5c401 | 271 | return sta_id; |
4f40e4d9 TW |
272 | } |
273 | ||
24e5c401 EG |
274 | station = &priv->stations[sta_id]; |
275 | station->used = IWL_STA_DRIVER_ACTIVE; | |
e1623446 | 276 | IWL_DEBUG_ASSOC(priv, "Add STA to driver ID %d: %pM\n", |
e174961c | 277 | sta_id, addr); |
4f40e4d9 TW |
278 | priv->num_stations++; |
279 | ||
280 | /* Set up the REPLY_ADD_STA command to send to device */ | |
281 | memset(&station->sta, 0, sizeof(struct iwl_addsta_cmd)); | |
282 | memcpy(station->sta.sta.addr, addr, ETH_ALEN); | |
283 | station->sta.mode = 0; | |
24e5c401 | 284 | station->sta.sta.sta_id = sta_id; |
4f40e4d9 TW |
285 | station->sta.station_flags = 0; |
286 | ||
63d41769 JB |
287 | /* |
288 | * OK to call unconditionally, since local stations (IBSS BSSID | |
289 | * STA and broadcast STA) pass in a NULL ht_info, and mac80211 | |
290 | * doesn't allow HT IBSS. | |
291 | */ | |
292 | iwl_set_ht_add_station(priv, sta_id, ht_info); | |
4f40e4d9 | 293 | |
c587de0b TW |
294 | /* 3945 only */ |
295 | rate = (priv->band == IEEE80211_BAND_5GHZ) ? | |
296 | IWL_RATE_6M_PLCP : IWL_RATE_1M_PLCP; | |
297 | /* Turn on both antennas for the station... */ | |
298 | station->sta.rate_n_flags = cpu_to_le16(rate | RATE_MCS_ANT_AB_MSK); | |
299 | ||
fe6b23dd RC |
300 | return sta_id; |
301 | ||
302 | } | |
303 | ||
304 | #define STA_WAIT_TIMEOUT (HZ/2) | |
305 | ||
306 | /** | |
307 | * iwl_add_station_common - | |
308 | */ | |
309 | int iwl_add_station_common(struct iwl_priv *priv, const u8 *addr, | |
310 | bool is_ap, | |
311 | struct ieee80211_sta_ht_cap *ht_info, | |
312 | u8 *sta_id_r) | |
313 | { | |
314 | struct iwl_station_entry *station; | |
315 | unsigned long flags_spin; | |
316 | int ret = 0; | |
317 | u8 sta_id; | |
318 | ||
319 | *sta_id_r = 0; | |
320 | spin_lock_irqsave(&priv->sta_lock, flags_spin); | |
321 | sta_id = iwl_prep_station(priv, addr, is_ap, ht_info); | |
322 | if (sta_id == IWL_INVALID_STATION) { | |
323 | IWL_ERR(priv, "Unable to prepare station %pM for addition\n", | |
324 | addr); | |
325 | spin_unlock_irqrestore(&priv->sta_lock, flags_spin); | |
326 | return -EINVAL; | |
327 | } | |
328 | ||
329 | /* | |
330 | * uCode is not able to deal with multiple requests to add a | |
331 | * station. Keep track if one is in progress so that we do not send | |
332 | * another. | |
333 | */ | |
334 | if (priv->stations[sta_id].used & IWL_STA_UCODE_INPROGRESS) { | |
335 | IWL_DEBUG_INFO(priv, "STA %d already in process of being added.\n", | |
336 | sta_id); | |
337 | spin_unlock_irqrestore(&priv->sta_lock, flags_spin); | |
338 | return -EEXIST; | |
339 | } | |
340 | ||
341 | if ((priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE) && | |
342 | (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) { | |
343 | IWL_DEBUG_ASSOC(priv, "STA %d (%pM) already added, not adding again.\n", | |
344 | sta_id, addr); | |
345 | spin_unlock_irqrestore(&priv->sta_lock, flags_spin); | |
346 | return -EEXIST; | |
347 | } | |
348 | ||
349 | priv->stations[sta_id].used |= IWL_STA_UCODE_INPROGRESS; | |
350 | station = &priv->stations[sta_id]; | |
4f40e4d9 TW |
351 | spin_unlock_irqrestore(&priv->sta_lock, flags_spin); |
352 | ||
353 | /* Add station to device's station table */ | |
fe6b23dd RC |
354 | ret = iwl_send_add_sta(priv, &station->sta, CMD_SYNC); |
355 | if (ret) { | |
356 | IWL_ERR(priv, "Adding station %pM failed.\n", station->sta.sta.addr); | |
357 | spin_lock_irqsave(&priv->sta_lock, flags_spin); | |
358 | priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE; | |
359 | priv->stations[sta_id].used &= ~IWL_STA_UCODE_INPROGRESS; | |
360 | spin_unlock_irqrestore(&priv->sta_lock, flags_spin); | |
361 | } | |
362 | *sta_id_r = sta_id; | |
363 | return ret; | |
4f40e4d9 | 364 | } |
fe6b23dd | 365 | EXPORT_SYMBOL(iwl_add_station_common); |
4f40e4d9 | 366 | |
a6a0345c JB |
367 | static struct iwl_link_quality_cmd *iwl_sta_alloc_lq(struct iwl_priv *priv, |
368 | u8 sta_id) | |
7a999bf0 | 369 | { |
fe6b23dd | 370 | int i, r; |
d2e210ae | 371 | struct iwl_link_quality_cmd *link_cmd; |
fe6b23dd RC |
372 | u32 rate_flags; |
373 | ||
d2e210ae RC |
374 | link_cmd = kzalloc(sizeof(struct iwl_link_quality_cmd), GFP_KERNEL); |
375 | if (!link_cmd) { | |
376 | IWL_ERR(priv, "Unable to allocate memory for LQ cmd.\n"); | |
377 | return NULL; | |
378 | } | |
fe6b23dd RC |
379 | /* Set up the rate scaling to start at selected rate, fall back |
380 | * all the way down to 1M in IEEE order, and then spin on 1M */ | |
156b70d1 | 381 | if (priv->band == IEEE80211_BAND_5GHZ) |
fe6b23dd RC |
382 | r = IWL_RATE_6M_INDEX; |
383 | else | |
384 | r = IWL_RATE_1M_INDEX; | |
24e5c401 | 385 | |
fe6b23dd RC |
386 | for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) { |
387 | rate_flags = 0; | |
388 | if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE) | |
389 | rate_flags |= RATE_MCS_CCK_MSK; | |
24e5c401 | 390 | |
fe6b23dd RC |
391 | rate_flags |= first_antenna(priv->hw_params.valid_tx_ant) << |
392 | RATE_MCS_ANT_POS; | |
24e5c401 | 393 | |
d2e210ae | 394 | link_cmd->rs_table[i].rate_n_flags = |
fe6b23dd RC |
395 | iwl_hw_set_rate_n_flags(iwl_rates[r].plcp, rate_flags); |
396 | r = iwl_get_prev_ieee_rate(r); | |
397 | } | |
24e5c401 | 398 | |
d2e210ae | 399 | link_cmd->general_params.single_stream_ant_msk = |
fe6b23dd | 400 | first_antenna(priv->hw_params.valid_tx_ant); |
3a23d695 | 401 | |
d2e210ae | 402 | link_cmd->general_params.dual_stream_ant_msk = |
3a23d695 WYG |
403 | priv->hw_params.valid_tx_ant & |
404 | ~first_antenna(priv->hw_params.valid_tx_ant); | |
d2e210ae RC |
405 | if (!link_cmd->general_params.dual_stream_ant_msk) { |
406 | link_cmd->general_params.dual_stream_ant_msk = ANT_AB; | |
3a23d695 | 407 | } else if (num_of_ant(priv->hw_params.valid_tx_ant) == 2) { |
d2e210ae | 408 | link_cmd->general_params.dual_stream_ant_msk = |
3a23d695 WYG |
409 | priv->hw_params.valid_tx_ant; |
410 | } | |
411 | ||
d2e210ae RC |
412 | link_cmd->agg_params.agg_dis_start_th = LINK_QUAL_AGG_DISABLE_START_DEF; |
413 | link_cmd->agg_params.agg_time_limit = | |
fe6b23dd | 414 | cpu_to_le16(LINK_QUAL_AGG_TIME_LIMIT_DEF); |
24e5c401 | 415 | |
156b70d1 | 416 | link_cmd->sta_id = sta_id; |
24e5c401 | 417 | |
d2e210ae | 418 | return link_cmd; |
7a999bf0 TW |
419 | } |
420 | ||
fe6b23dd | 421 | /* |
57f8db89 | 422 | * iwl_add_bssid_station - Add the special IBSS BSSID station |
fe6b23dd RC |
423 | * |
424 | * Function sleeps. | |
425 | */ | |
57f8db89 | 426 | int iwl_add_bssid_station(struct iwl_priv *priv, const u8 *addr, bool init_rs, |
fd1af15d | 427 | u8 *sta_id_r) |
7a999bf0 | 428 | { |
fe6b23dd RC |
429 | int ret; |
430 | u8 sta_id; | |
d2e210ae RC |
431 | struct iwl_link_quality_cmd *link_cmd; |
432 | unsigned long flags; | |
7a999bf0 | 433 | |
96900c75 | 434 | if (sta_id_r) |
fd1af15d JB |
435 | *sta_id_r = IWL_INVALID_STATION; |
436 | ||
fe6b23dd RC |
437 | ret = iwl_add_station_common(priv, addr, 0, NULL, &sta_id); |
438 | if (ret) { | |
439 | IWL_ERR(priv, "Unable to add station %pM\n", addr); | |
440 | return ret; | |
7a999bf0 TW |
441 | } |
442 | ||
fd1af15d JB |
443 | if (sta_id_r) |
444 | *sta_id_r = sta_id; | |
445 | ||
d2e210ae RC |
446 | spin_lock_irqsave(&priv->sta_lock, flags); |
447 | priv->stations[sta_id].used |= IWL_STA_LOCAL; | |
448 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
449 | ||
450 | if (init_rs) { | |
fe6b23dd | 451 | /* Set up default rate scaling table in device's station table */ |
a6a0345c | 452 | link_cmd = iwl_sta_alloc_lq(priv, sta_id); |
d2e210ae RC |
453 | if (!link_cmd) { |
454 | IWL_ERR(priv, "Unable to initialize rate scaling for station %pM.\n", | |
455 | addr); | |
456 | return -ENOMEM; | |
457 | } | |
a6a0345c JB |
458 | |
459 | ret = iwl_send_lq_cmd(priv, link_cmd, CMD_SYNC, true); | |
460 | if (ret) | |
461 | IWL_ERR(priv, "Link quality command failed (%d)\n", ret); | |
462 | ||
d2e210ae RC |
463 | spin_lock_irqsave(&priv->sta_lock, flags); |
464 | priv->stations[sta_id].lq = link_cmd; | |
465 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
466 | } | |
467 | ||
fe6b23dd RC |
468 | return 0; |
469 | } | |
57f8db89 | 470 | EXPORT_SYMBOL(iwl_add_bssid_station); |
fe6b23dd RC |
471 | |
472 | /** | |
473 | * iwl_sta_ucode_deactivate - deactivate ucode status for a station | |
474 | * | |
475 | * priv->sta_lock must be held | |
476 | */ | |
477 | static void iwl_sta_ucode_deactivate(struct iwl_priv *priv, u8 sta_id) | |
478 | { | |
479 | /* Ucode must be active and driver must be non active */ | |
d2e210ae RC |
480 | if ((priv->stations[sta_id].used & |
481 | (IWL_STA_UCODE_ACTIVE | IWL_STA_DRIVER_ACTIVE)) != IWL_STA_UCODE_ACTIVE) | |
fe6b23dd RC |
482 | IWL_ERR(priv, "removed non active STA %u\n", sta_id); |
483 | ||
484 | priv->stations[sta_id].used &= ~IWL_STA_UCODE_ACTIVE; | |
485 | ||
486 | memset(&priv->stations[sta_id], 0, sizeof(struct iwl_station_entry)); | |
487 | IWL_DEBUG_ASSOC(priv, "Removed STA %u\n", sta_id); | |
7a999bf0 TW |
488 | } |
489 | ||
fe6b23dd RC |
490 | static int iwl_send_remove_station(struct iwl_priv *priv, |
491 | struct iwl_station_entry *station) | |
7a999bf0 | 492 | { |
2f301227 | 493 | struct iwl_rx_packet *pkt; |
7a999bf0 TW |
494 | int ret; |
495 | ||
fe6b23dd | 496 | unsigned long flags_spin; |
7a999bf0 TW |
497 | struct iwl_rem_sta_cmd rm_sta_cmd; |
498 | ||
499 | struct iwl_host_cmd cmd = { | |
500 | .id = REPLY_REMOVE_STA, | |
501 | .len = sizeof(struct iwl_rem_sta_cmd), | |
fe6b23dd | 502 | .flags = CMD_SYNC, |
7a999bf0 TW |
503 | .data = &rm_sta_cmd, |
504 | }; | |
505 | ||
506 | memset(&rm_sta_cmd, 0, sizeof(rm_sta_cmd)); | |
507 | rm_sta_cmd.num_sta = 1; | |
fe6b23dd RC |
508 | memcpy(&rm_sta_cmd.addr, &station->sta.sta.addr , ETH_ALEN); |
509 | ||
510 | cmd.flags |= CMD_WANT_SKB; | |
7a999bf0 | 511 | |
7a999bf0 TW |
512 | ret = iwl_send_cmd(priv, &cmd); |
513 | ||
fe6b23dd | 514 | if (ret) |
7a999bf0 TW |
515 | return ret; |
516 | ||
2f301227 ZY |
517 | pkt = (struct iwl_rx_packet *)cmd.reply_page; |
518 | if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) { | |
15b1687c | 519 | IWL_ERR(priv, "Bad return from REPLY_REMOVE_STA (0x%08X)\n", |
2f301227 | 520 | pkt->hdr.flags); |
7a999bf0 TW |
521 | ret = -EIO; |
522 | } | |
523 | ||
524 | if (!ret) { | |
2f301227 | 525 | switch (pkt->u.rem_sta.status) { |
7a999bf0 | 526 | case REM_STA_SUCCESS_MSK: |
fe6b23dd RC |
527 | spin_lock_irqsave(&priv->sta_lock, flags_spin); |
528 | iwl_sta_ucode_deactivate(priv, station->sta.sta.sta_id); | |
529 | spin_unlock_irqrestore(&priv->sta_lock, flags_spin); | |
e1623446 | 530 | IWL_DEBUG_ASSOC(priv, "REPLY_REMOVE_STA PASSED\n"); |
7a999bf0 TW |
531 | break; |
532 | default: | |
533 | ret = -EIO; | |
15b1687c | 534 | IWL_ERR(priv, "REPLY_REMOVE_STA failed\n"); |
7a999bf0 TW |
535 | break; |
536 | } | |
537 | } | |
64a76b50 | 538 | iwl_free_pages(priv, cmd.reply_page); |
7a999bf0 TW |
539 | |
540 | return ret; | |
541 | } | |
be1f3ab6 | 542 | |
7a999bf0 TW |
543 | /** |
544 | * iwl_remove_station - Remove driver's knowledge of station. | |
7a999bf0 | 545 | */ |
fd1af15d JB |
546 | int iwl_remove_station(struct iwl_priv *priv, const u8 sta_id, |
547 | const u8 *addr) | |
7a999bf0 | 548 | { |
fe6b23dd | 549 | struct iwl_station_entry *station; |
fd1af15d | 550 | unsigned long flags; |
fe6b23dd RC |
551 | |
552 | if (!iwl_is_ready(priv)) { | |
553 | IWL_DEBUG_INFO(priv, | |
91dd6c27 | 554 | "Unable to remove station %pM, device not ready.\n", |
c0222df8 | 555 | addr); |
fe6b23dd RC |
556 | /* |
557 | * It is typical for stations to be removed when we are | |
558 | * going down. Return success since device will be down | |
559 | * soon anyway | |
560 | */ | |
561 | return 0; | |
562 | } | |
7a999bf0 | 563 | |
fd1af15d JB |
564 | IWL_DEBUG_ASSOC(priv, "Removing STA from driver:%d %pM\n", |
565 | sta_id, addr); | |
7a999bf0 | 566 | |
fd1af15d JB |
567 | if (WARN_ON(sta_id == IWL_INVALID_STATION)) |
568 | return -EINVAL; | |
7a999bf0 | 569 | |
fd1af15d | 570 | spin_lock_irqsave(&priv->sta_lock, flags); |
24e5c401 EG |
571 | |
572 | if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) { | |
fe6b23dd | 573 | IWL_DEBUG_INFO(priv, "Removing %pM but non DRIVER active\n", |
c0222df8 | 574 | addr); |
fd1af15d | 575 | goto out_err; |
24e5c401 EG |
576 | } |
577 | ||
578 | if (!(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) { | |
fe6b23dd | 579 | IWL_DEBUG_INFO(priv, "Removing %pM but non UCODE active\n", |
c0222df8 | 580 | addr); |
fd1af15d | 581 | goto out_err; |
7a999bf0 TW |
582 | } |
583 | ||
1fa61b2e JB |
584 | if (priv->stations[sta_id].used & IWL_STA_LOCAL) { |
585 | kfree(priv->stations[sta_id].lq); | |
586 | priv->stations[sta_id].lq = NULL; | |
587 | } | |
24e5c401 EG |
588 | |
589 | priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE; | |
590 | ||
591 | priv->num_stations--; | |
592 | ||
7a999bf0 | 593 | BUG_ON(priv->num_stations < 0); |
24e5c401 | 594 | |
fe6b23dd | 595 | station = &priv->stations[sta_id]; |
7a999bf0 | 596 | spin_unlock_irqrestore(&priv->sta_lock, flags); |
24e5c401 | 597 | |
fd1af15d JB |
598 | return iwl_send_remove_station(priv, station); |
599 | out_err: | |
7a999bf0 | 600 | spin_unlock_irqrestore(&priv->sta_lock, flags); |
fd1af15d | 601 | return -EINVAL; |
7a999bf0 | 602 | } |
1fa61b2e | 603 | EXPORT_SYMBOL_GPL(iwl_remove_station); |
24e5c401 | 604 | |
83dde8c9 | 605 | /** |
2c810ccd JB |
606 | * iwl_clear_ucode_stations - clear ucode station table bits |
607 | * | |
608 | * This function clears all the bits in the driver indicating | |
609 | * which stations are active in the ucode. Call when something | |
610 | * other than explicit station management would cause this in | |
611 | * the ucode, e.g. unassociated RXON. | |
83dde8c9 | 612 | */ |
2c810ccd | 613 | void iwl_clear_ucode_stations(struct iwl_priv *priv) |
83dde8c9 | 614 | { |
48676eb3 | 615 | int i; |
7e246191 RC |
616 | unsigned long flags_spin; |
617 | bool cleared = false; | |
618 | ||
2c810ccd | 619 | IWL_DEBUG_INFO(priv, "Clearing ucode stations in driver\n"); |
83dde8c9 | 620 | |
7e246191 | 621 | spin_lock_irqsave(&priv->sta_lock, flags_spin); |
2c810ccd JB |
622 | for (i = 0; i < priv->hw_params.max_stations; i++) { |
623 | if (priv->stations[i].used & IWL_STA_UCODE_ACTIVE) { | |
624 | IWL_DEBUG_INFO(priv, "Clearing ucode active for station %d\n", i); | |
625 | priv->stations[i].used &= ~IWL_STA_UCODE_ACTIVE; | |
626 | cleared = true; | |
7e246191 RC |
627 | } |
628 | } | |
629 | spin_unlock_irqrestore(&priv->sta_lock, flags_spin); | |
630 | ||
631 | if (!cleared) | |
632 | IWL_DEBUG_INFO(priv, "No active stations found to be cleared\n"); | |
633 | } | |
634 | EXPORT_SYMBOL(iwl_clear_ucode_stations); | |
83dde8c9 | 635 | |
7e246191 RC |
636 | /** |
637 | * iwl_restore_stations() - Restore driver known stations to device | |
638 | * | |
639 | * All stations considered active by driver, but not present in ucode, is | |
640 | * restored. | |
fe6b23dd RC |
641 | * |
642 | * Function sleeps. | |
7e246191 RC |
643 | */ |
644 | void iwl_restore_stations(struct iwl_priv *priv) | |
645 | { | |
fe6b23dd | 646 | struct iwl_station_entry *station; |
7e246191 RC |
647 | unsigned long flags_spin; |
648 | int i; | |
649 | bool found = false; | |
fe6b23dd | 650 | int ret; |
83dde8c9 | 651 | |
7e246191 RC |
652 | if (!iwl_is_ready(priv)) { |
653 | IWL_DEBUG_INFO(priv, "Not ready yet, not restoring any stations.\n"); | |
654 | return; | |
655 | } | |
83dde8c9 | 656 | |
7e246191 RC |
657 | IWL_DEBUG_ASSOC(priv, "Restoring all known stations ... start.\n"); |
658 | spin_lock_irqsave(&priv->sta_lock, flags_spin); | |
659 | for (i = 0; i < priv->hw_params.max_stations; i++) { | |
660 | if ((priv->stations[i].used & IWL_STA_DRIVER_ACTIVE) && | |
661 | !(priv->stations[i].used & IWL_STA_UCODE_ACTIVE)) { | |
662 | IWL_DEBUG_ASSOC(priv, "Restoring sta %pM\n", | |
663 | priv->stations[i].sta.sta.addr); | |
664 | priv->stations[i].sta.mode = 0; | |
665 | priv->stations[i].used |= IWL_STA_UCODE_INPROGRESS; | |
666 | found = true; | |
667 | } | |
668 | } | |
5e46882e | 669 | |
7e246191 RC |
670 | for (i = 0; i < priv->hw_params.max_stations; i++) { |
671 | if ((priv->stations[i].used & IWL_STA_UCODE_INPROGRESS)) { | |
fe6b23dd RC |
672 | spin_unlock_irqrestore(&priv->sta_lock, flags_spin); |
673 | station = &priv->stations[i]; | |
674 | ret = iwl_send_add_sta(priv, &priv->stations[i].sta, CMD_SYNC); | |
675 | if (ret) { | |
676 | IWL_ERR(priv, "Adding station %pM failed.\n", | |
677 | station->sta.sta.addr); | |
678 | spin_lock_irqsave(&priv->sta_lock, flags_spin); | |
679 | priv->stations[i].used &= ~IWL_STA_DRIVER_ACTIVE; | |
680 | priv->stations[i].used &= ~IWL_STA_UCODE_INPROGRESS; | |
681 | spin_unlock_irqrestore(&priv->sta_lock, flags_spin); | |
682 | } | |
683 | /* | |
684 | * Rate scaling has already been initialized, send | |
685 | * current LQ command | |
686 | */ | |
687 | if (station->lq) | |
688 | iwl_send_lq_cmd(priv, station->lq, CMD_SYNC, true); | |
689 | spin_lock_irqsave(&priv->sta_lock, flags_spin); | |
7e246191 RC |
690 | priv->stations[i].used &= ~IWL_STA_UCODE_INPROGRESS; |
691 | } | |
48676eb3 MA |
692 | } |
693 | ||
7e246191 RC |
694 | spin_unlock_irqrestore(&priv->sta_lock, flags_spin); |
695 | if (!found) | |
696 | IWL_DEBUG_INFO(priv, "Restoring all known stations .... no stations to be restored.\n"); | |
697 | else | |
fe6b23dd | 698 | IWL_DEBUG_INFO(priv, "Restoring all known stations .... complete.\n"); |
83dde8c9 | 699 | } |
7e246191 | 700 | EXPORT_SYMBOL(iwl_restore_stations); |
83dde8c9 | 701 | |
6e21f15c | 702 | int iwl_get_free_ucode_key_index(struct iwl_priv *priv) |
80fb47a1 EG |
703 | { |
704 | int i; | |
705 | ||
706 | for (i = 0; i < STA_KEY_MAX_NUM; i++) | |
77bab602 | 707 | if (!test_and_set_bit(i, &priv->ucode_key_table)) |
80fb47a1 EG |
708 | return i; |
709 | ||
40a9a829 | 710 | return WEP_INVALID_OFFSET; |
80fb47a1 | 711 | } |
6e21f15c | 712 | EXPORT_SYMBOL(iwl_get_free_ucode_key_index); |
6974e363 | 713 | |
335348b1 | 714 | static int iwl_send_static_wepkey_cmd(struct iwl_priv *priv, u8 send_if_empty) |
6974e363 EG |
715 | { |
716 | int i, not_empty = 0; | |
717 | u8 buff[sizeof(struct iwl_wep_cmd) + | |
718 | sizeof(struct iwl_wep_key) * WEP_KEYS_MAX]; | |
719 | struct iwl_wep_cmd *wep_cmd = (struct iwl_wep_cmd *)buff; | |
720 | size_t cmd_size = sizeof(struct iwl_wep_cmd); | |
721 | struct iwl_host_cmd cmd = { | |
722 | .id = REPLY_WEPKEY, | |
723 | .data = wep_cmd, | |
72e15d71 | 724 | .flags = CMD_SYNC, |
6974e363 EG |
725 | }; |
726 | ||
72e15d71 JB |
727 | might_sleep(); |
728 | ||
6974e363 EG |
729 | memset(wep_cmd, 0, cmd_size + |
730 | (sizeof(struct iwl_wep_key) * WEP_KEYS_MAX)); | |
731 | ||
732 | for (i = 0; i < WEP_KEYS_MAX ; i++) { | |
733 | wep_cmd->key[i].key_index = i; | |
734 | if (priv->wep_keys[i].key_size) { | |
735 | wep_cmd->key[i].key_offset = i; | |
736 | not_empty = 1; | |
737 | } else { | |
738 | wep_cmd->key[i].key_offset = WEP_INVALID_OFFSET; | |
739 | } | |
740 | ||
741 | wep_cmd->key[i].key_size = priv->wep_keys[i].key_size; | |
742 | memcpy(&wep_cmd->key[i].key[3], priv->wep_keys[i].key, | |
743 | priv->wep_keys[i].key_size); | |
744 | } | |
745 | ||
746 | wep_cmd->global_key_type = WEP_KEY_WEP_TYPE; | |
747 | wep_cmd->num_keys = WEP_KEYS_MAX; | |
748 | ||
749 | cmd_size += sizeof(struct iwl_wep_key) * WEP_KEYS_MAX; | |
750 | ||
751 | cmd.len = cmd_size; | |
752 | ||
753 | if (not_empty || send_if_empty) | |
754 | return iwl_send_cmd(priv, &cmd); | |
755 | else | |
756 | return 0; | |
757 | } | |
335348b1 JB |
758 | |
759 | int iwl_restore_default_wep_keys(struct iwl_priv *priv) | |
760 | { | |
761 | WARN_ON(!mutex_is_locked(&priv->mutex)); | |
762 | ||
763 | return iwl_send_static_wepkey_cmd(priv, 0); | |
764 | } | |
765 | EXPORT_SYMBOL(iwl_restore_default_wep_keys); | |
6974e363 EG |
766 | |
767 | int iwl_remove_default_wep_key(struct iwl_priv *priv, | |
80fb47a1 | 768 | struct ieee80211_key_conf *keyconf) |
6974e363 EG |
769 | { |
770 | int ret; | |
6974e363 | 771 | |
72e15d71 JB |
772 | WARN_ON(!mutex_is_locked(&priv->mutex)); |
773 | ||
2d1bb9e5 RC |
774 | IWL_DEBUG_WEP(priv, "Removing default WEP key: idx=%d\n", |
775 | keyconf->keyidx); | |
80fb47a1 | 776 | |
80fb47a1 | 777 | memset(&priv->wep_keys[keyconf->keyidx], 0, sizeof(priv->wep_keys[0])); |
2d1bb9e5 RC |
778 | if (iwl_is_rfkill(priv)) { |
779 | IWL_DEBUG_WEP(priv, "Not sending REPLY_WEPKEY command due to RFKILL.\n"); | |
72e15d71 | 780 | /* but keys in device are clear anyway so return success */ |
2d1bb9e5 RC |
781 | return 0; |
782 | } | |
6974e363 | 783 | ret = iwl_send_static_wepkey_cmd(priv, 1); |
e1623446 | 784 | IWL_DEBUG_WEP(priv, "Remove default WEP key: idx=%d ret=%d\n", |
4564ce8b | 785 | keyconf->keyidx, ret); |
6974e363 EG |
786 | |
787 | return ret; | |
788 | } | |
27aaba0c | 789 | EXPORT_SYMBOL(iwl_remove_default_wep_key); |
6974e363 EG |
790 | |
791 | int iwl_set_default_wep_key(struct iwl_priv *priv, | |
792 | struct ieee80211_key_conf *keyconf) | |
793 | { | |
794 | int ret; | |
72e15d71 JB |
795 | |
796 | WARN_ON(!mutex_is_locked(&priv->mutex)); | |
6974e363 | 797 | |
4564ce8b EG |
798 | if (keyconf->keylen != WEP_KEY_LEN_128 && |
799 | keyconf->keylen != WEP_KEY_LEN_64) { | |
e1623446 | 800 | IWL_DEBUG_WEP(priv, "Bad WEP key length %d\n", keyconf->keylen); |
4564ce8b EG |
801 | return -EINVAL; |
802 | } | |
803 | ||
6974e363 | 804 | keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV; |
ccc038ab | 805 | keyconf->hw_key_idx = HW_KEY_DEFAULT; |
6974e363 EG |
806 | priv->stations[IWL_AP_ID].keyinfo.alg = ALG_WEP; |
807 | ||
6974e363 EG |
808 | priv->wep_keys[keyconf->keyidx].key_size = keyconf->keylen; |
809 | memcpy(&priv->wep_keys[keyconf->keyidx].key, &keyconf->key, | |
810 | keyconf->keylen); | |
811 | ||
812 | ret = iwl_send_static_wepkey_cmd(priv, 0); | |
e1623446 | 813 | IWL_DEBUG_WEP(priv, "Set default WEP key: len=%d idx=%d ret=%d\n", |
4564ce8b | 814 | keyconf->keylen, keyconf->keyidx, ret); |
6974e363 EG |
815 | |
816 | return ret; | |
817 | } | |
27aaba0c | 818 | EXPORT_SYMBOL(iwl_set_default_wep_key); |
6974e363 | 819 | |
7480513f | 820 | static int iwl_set_wep_dynamic_key_info(struct iwl_priv *priv, |
0211ddda EG |
821 | struct ieee80211_key_conf *keyconf, |
822 | u8 sta_id) | |
823 | { | |
824 | unsigned long flags; | |
825 | __le16 key_flags = 0; | |
826 | int ret; | |
827 | ||
828 | keyconf->flags &= ~IEEE80211_KEY_FLAG_GENERATE_IV; | |
0211ddda EG |
829 | |
830 | key_flags |= (STA_KEY_FLG_WEP | STA_KEY_FLG_MAP_KEY_MSK); | |
831 | key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS); | |
832 | key_flags &= ~STA_KEY_FLG_INVALID; | |
833 | ||
834 | if (keyconf->keylen == WEP_KEY_LEN_128) | |
835 | key_flags |= STA_KEY_FLG_KEY_SIZE_MSK; | |
836 | ||
5425e490 | 837 | if (sta_id == priv->hw_params.bcast_sta_id) |
0211ddda EG |
838 | key_flags |= STA_KEY_MULTICAST_MSK; |
839 | ||
840 | spin_lock_irqsave(&priv->sta_lock, flags); | |
841 | ||
842 | priv->stations[sta_id].keyinfo.alg = keyconf->alg; | |
843 | priv->stations[sta_id].keyinfo.keylen = keyconf->keylen; | |
844 | priv->stations[sta_id].keyinfo.keyidx = keyconf->keyidx; | |
845 | ||
846 | memcpy(priv->stations[sta_id].keyinfo.key, | |
847 | keyconf->key, keyconf->keylen); | |
848 | ||
849 | memcpy(&priv->stations[sta_id].sta.key.key[3], | |
850 | keyconf->key, keyconf->keylen); | |
851 | ||
3ec47732 EG |
852 | if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK) |
853 | == STA_KEY_FLG_NO_ENC) | |
854 | priv->stations[sta_id].sta.key.key_offset = | |
80fb47a1 | 855 | iwl_get_free_ucode_key_index(priv); |
3ec47732 EG |
856 | /* else, we are overriding an existing key => no need to allocated room |
857 | * in uCode. */ | |
0211ddda | 858 | |
40a9a829 | 859 | WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET, |
e724b8fe | 860 | "no space for a new key"); |
40a9a829 | 861 | |
3ec47732 | 862 | priv->stations[sta_id].sta.key.key_flags = key_flags; |
0211ddda EG |
863 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK; |
864 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
865 | ||
133636de | 866 | ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC); |
0211ddda EG |
867 | |
868 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
869 | ||
870 | return ret; | |
871 | } | |
7480513f EG |
872 | |
873 | static int iwl_set_ccmp_dynamic_key_info(struct iwl_priv *priv, | |
874 | struct ieee80211_key_conf *keyconf, | |
875 | u8 sta_id) | |
876 | { | |
877 | unsigned long flags; | |
878 | __le16 key_flags = 0; | |
40a9a829 | 879 | int ret; |
7480513f EG |
880 | |
881 | key_flags |= (STA_KEY_FLG_CCMP | STA_KEY_FLG_MAP_KEY_MSK); | |
882 | key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS); | |
883 | key_flags &= ~STA_KEY_FLG_INVALID; | |
884 | ||
5425e490 | 885 | if (sta_id == priv->hw_params.bcast_sta_id) |
7480513f EG |
886 | key_flags |= STA_KEY_MULTICAST_MSK; |
887 | ||
888 | keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; | |
7480513f EG |
889 | |
890 | spin_lock_irqsave(&priv->sta_lock, flags); | |
891 | priv->stations[sta_id].keyinfo.alg = keyconf->alg; | |
892 | priv->stations[sta_id].keyinfo.keylen = keyconf->keylen; | |
893 | ||
894 | memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key, | |
895 | keyconf->keylen); | |
896 | ||
897 | memcpy(priv->stations[sta_id].sta.key.key, keyconf->key, | |
898 | keyconf->keylen); | |
899 | ||
3ec47732 EG |
900 | if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK) |
901 | == STA_KEY_FLG_NO_ENC) | |
902 | priv->stations[sta_id].sta.key.key_offset = | |
903 | iwl_get_free_ucode_key_index(priv); | |
904 | /* else, we are overriding an existing key => no need to allocated room | |
905 | * in uCode. */ | |
906 | ||
40a9a829 | 907 | WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET, |
e724b8fe | 908 | "no space for a new key"); |
40a9a829 | 909 | |
7480513f EG |
910 | priv->stations[sta_id].sta.key.key_flags = key_flags; |
911 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK; | |
912 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
913 | ||
40a9a829 TW |
914 | ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC); |
915 | ||
7480513f EG |
916 | spin_unlock_irqrestore(&priv->sta_lock, flags); |
917 | ||
40a9a829 | 918 | return ret; |
7480513f EG |
919 | } |
920 | ||
921 | static int iwl_set_tkip_dynamic_key_info(struct iwl_priv *priv, | |
922 | struct ieee80211_key_conf *keyconf, | |
923 | u8 sta_id) | |
924 | { | |
925 | unsigned long flags; | |
926 | int ret = 0; | |
299f5462 RC |
927 | __le16 key_flags = 0; |
928 | ||
929 | key_flags |= (STA_KEY_FLG_TKIP | STA_KEY_FLG_MAP_KEY_MSK); | |
930 | key_flags |= cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS); | |
931 | key_flags &= ~STA_KEY_FLG_INVALID; | |
932 | ||
933 | if (sta_id == priv->hw_params.bcast_sta_id) | |
934 | key_flags |= STA_KEY_MULTICAST_MSK; | |
7480513f EG |
935 | |
936 | keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_IV; | |
937 | keyconf->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC; | |
7480513f EG |
938 | |
939 | spin_lock_irqsave(&priv->sta_lock, flags); | |
940 | ||
941 | priv->stations[sta_id].keyinfo.alg = keyconf->alg; | |
7480513f | 942 | priv->stations[sta_id].keyinfo.keylen = 16; |
3ec47732 EG |
943 | |
944 | if ((priv->stations[sta_id].sta.key.key_flags & STA_KEY_FLG_ENCRYPT_MSK) | |
945 | == STA_KEY_FLG_NO_ENC) | |
946 | priv->stations[sta_id].sta.key.key_offset = | |
77bab602 | 947 | iwl_get_free_ucode_key_index(priv); |
3ec47732 EG |
948 | /* else, we are overriding an existing key => no need to allocated room |
949 | * in uCode. */ | |
7480513f | 950 | |
40a9a829 | 951 | WARN(priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET, |
e724b8fe | 952 | "no space for a new key"); |
40a9a829 | 953 | |
299f5462 RC |
954 | priv->stations[sta_id].sta.key.key_flags = key_flags; |
955 | ||
956 | ||
7480513f EG |
957 | /* This copy is acutally not needed: we get the key with each TX */ |
958 | memcpy(priv->stations[sta_id].keyinfo.key, keyconf->key, 16); | |
959 | ||
960 | memcpy(priv->stations[sta_id].sta.key.key, keyconf->key, 16); | |
961 | ||
962 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
963 | ||
964 | return ret; | |
965 | } | |
966 | ||
9f58671e TW |
967 | void iwl_update_tkip_key(struct iwl_priv *priv, |
968 | struct ieee80211_key_conf *keyconf, | |
bdbb612f | 969 | struct ieee80211_sta *sta, u32 iv32, u16 *phase1key) |
9f58671e | 970 | { |
bdbb612f | 971 | u8 sta_id; |
9f58671e | 972 | unsigned long flags; |
9f58671e | 973 | int i; |
9f58671e | 974 | |
bdbb612f JB |
975 | if (sta) { |
976 | sta_id = iwl_sta_id(sta); | |
977 | ||
978 | if (sta_id == IWL_INVALID_STATION) { | |
979 | IWL_DEBUG_MAC80211(priv, "leave - %pM not initialised.\n", | |
980 | sta->addr); | |
981 | return; | |
982 | } | |
983 | } else | |
984 | sta_id = priv->hw_params.bcast_sta_id; | |
985 | ||
9f58671e TW |
986 | |
987 | if (iwl_scan_cancel(priv)) { | |
988 | /* cancel scan failed, just live w/ bad key and rely | |
989 | briefly on SW decryption */ | |
990 | return; | |
991 | } | |
992 | ||
9f58671e TW |
993 | spin_lock_irqsave(&priv->sta_lock, flags); |
994 | ||
9f58671e TW |
995 | priv->stations[sta_id].sta.key.tkip_rx_tsc_byte2 = (u8) iv32; |
996 | ||
997 | for (i = 0; i < 5; i++) | |
998 | priv->stations[sta_id].sta.key.tkip_rx_ttak[i] = | |
999 | cpu_to_le16(phase1key[i]); | |
1000 | ||
1001 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK; | |
1002 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
1003 | ||
1004 | iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC); | |
1005 | ||
1006 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
1007 | ||
1008 | } | |
1009 | EXPORT_SYMBOL(iwl_update_tkip_key); | |
1010 | ||
3ec47732 EG |
1011 | int iwl_remove_dynamic_key(struct iwl_priv *priv, |
1012 | struct ieee80211_key_conf *keyconf, | |
1013 | u8 sta_id) | |
7480513f EG |
1014 | { |
1015 | unsigned long flags; | |
3ec47732 EG |
1016 | int ret = 0; |
1017 | u16 key_flags; | |
1018 | u8 keyidx; | |
7480513f | 1019 | |
ccc038ab | 1020 | priv->key_mapping_key--; |
7480513f EG |
1021 | |
1022 | spin_lock_irqsave(&priv->sta_lock, flags); | |
3ec47732 EG |
1023 | key_flags = le16_to_cpu(priv->stations[sta_id].sta.key.key_flags); |
1024 | keyidx = (key_flags >> STA_KEY_FLG_KEYID_POS) & 0x3; | |
1025 | ||
e1623446 | 1026 | IWL_DEBUG_WEP(priv, "Remove dynamic key: idx=%d sta=%d\n", |
4564ce8b EG |
1027 | keyconf->keyidx, sta_id); |
1028 | ||
3ec47732 EG |
1029 | if (keyconf->keyidx != keyidx) { |
1030 | /* We need to remove a key with index different that the one | |
1031 | * in the uCode. This means that the key we need to remove has | |
1032 | * been replaced by another one with different index. | |
1033 | * Don't do anything and return ok | |
1034 | */ | |
1035 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
1036 | return 0; | |
1037 | } | |
1038 | ||
40a9a829 | 1039 | if (priv->stations[sta_id].sta.key.key_offset == WEP_INVALID_OFFSET) { |
39aadf8c | 1040 | IWL_WARN(priv, "Removing wrong key %d 0x%x\n", |
40a9a829 TW |
1041 | keyconf->keyidx, key_flags); |
1042 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
1043 | return 0; | |
1044 | } | |
1045 | ||
7480513f EG |
1046 | if (!test_and_clear_bit(priv->stations[sta_id].sta.key.key_offset, |
1047 | &priv->ucode_key_table)) | |
15b1687c | 1048 | IWL_ERR(priv, "index %d not used in uCode key table.\n", |
7480513f EG |
1049 | priv->stations[sta_id].sta.key.key_offset); |
1050 | memset(&priv->stations[sta_id].keyinfo, 0, | |
6def9761 | 1051 | sizeof(struct iwl_hw_key)); |
7480513f EG |
1052 | memset(&priv->stations[sta_id].sta.key, 0, |
1053 | sizeof(struct iwl4965_keyinfo)); | |
3ec47732 EG |
1054 | priv->stations[sta_id].sta.key.key_flags = |
1055 | STA_KEY_FLG_NO_ENC | STA_KEY_FLG_INVALID; | |
1056 | priv->stations[sta_id].sta.key.key_offset = WEP_INVALID_OFFSET; | |
7480513f EG |
1057 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_KEY_MASK; |
1058 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
7480513f | 1059 | |
2d1bb9e5 | 1060 | if (iwl_is_rfkill(priv)) { |
91dd6c27 | 1061 | IWL_DEBUG_WEP(priv, "Not sending REPLY_ADD_STA command because RFKILL enabled.\n"); |
2d1bb9e5 RC |
1062 | spin_unlock_irqrestore(&priv->sta_lock, flags); |
1063 | return 0; | |
1064 | } | |
ccc038ab | 1065 | ret = iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC); |
3ec47732 EG |
1066 | spin_unlock_irqrestore(&priv->sta_lock, flags); |
1067 | return ret; | |
7480513f | 1068 | } |
27aaba0c | 1069 | EXPORT_SYMBOL(iwl_remove_dynamic_key); |
7480513f EG |
1070 | |
1071 | int iwl_set_dynamic_key(struct iwl_priv *priv, | |
ccc038ab | 1072 | struct ieee80211_key_conf *keyconf, u8 sta_id) |
7480513f EG |
1073 | { |
1074 | int ret; | |
1075 | ||
ccc038ab EG |
1076 | priv->key_mapping_key++; |
1077 | keyconf->hw_key_idx = HW_KEY_DYNAMIC; | |
7480513f | 1078 | |
ccc038ab | 1079 | switch (keyconf->alg) { |
7480513f | 1080 | case ALG_CCMP: |
ccc038ab | 1081 | ret = iwl_set_ccmp_dynamic_key_info(priv, keyconf, sta_id); |
7480513f EG |
1082 | break; |
1083 | case ALG_TKIP: | |
ccc038ab | 1084 | ret = iwl_set_tkip_dynamic_key_info(priv, keyconf, sta_id); |
7480513f EG |
1085 | break; |
1086 | case ALG_WEP: | |
ccc038ab | 1087 | ret = iwl_set_wep_dynamic_key_info(priv, keyconf, sta_id); |
7480513f EG |
1088 | break; |
1089 | default: | |
15b1687c WT |
1090 | IWL_ERR(priv, |
1091 | "Unknown alg: %s alg = %d\n", __func__, keyconf->alg); | |
7480513f EG |
1092 | ret = -EINVAL; |
1093 | } | |
1094 | ||
e1623446 | 1095 | IWL_DEBUG_WEP(priv, "Set dynamic key: alg= %d len=%d idx=%d sta=%d ret=%d\n", |
4564ce8b EG |
1096 | keyconf->alg, keyconf->keylen, keyconf->keyidx, |
1097 | sta_id, ret); | |
1098 | ||
7480513f EG |
1099 | return ret; |
1100 | } | |
27aaba0c | 1101 | EXPORT_SYMBOL(iwl_set_dynamic_key); |
7480513f | 1102 | |
66c73db7 TW |
1103 | #ifdef CONFIG_IWLWIFI_DEBUG |
1104 | static void iwl_dump_lq_cmd(struct iwl_priv *priv, | |
1105 | struct iwl_link_quality_cmd *lq) | |
1106 | { | |
1107 | int i; | |
e1623446 TW |
1108 | IWL_DEBUG_RATE(priv, "lq station id 0x%x\n", lq->sta_id); |
1109 | IWL_DEBUG_RATE(priv, "lq ant 0x%X 0x%X\n", | |
66c73db7 TW |
1110 | lq->general_params.single_stream_ant_msk, |
1111 | lq->general_params.dual_stream_ant_msk); | |
1112 | ||
1113 | for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) | |
e1623446 | 1114 | IWL_DEBUG_RATE(priv, "lq index %d 0x%X\n", |
66c73db7 TW |
1115 | i, lq->rs_table[i].rate_n_flags); |
1116 | } | |
1117 | #else | |
1118 | static inline void iwl_dump_lq_cmd(struct iwl_priv *priv, | |
1119 | struct iwl_link_quality_cmd *lq) | |
1120 | { | |
1121 | } | |
1122 | #endif | |
1123 | ||
3bce6066 RC |
1124 | /** |
1125 | * is_lq_table_valid() - Test one aspect of LQ cmd for validity | |
1126 | * | |
1127 | * It sometimes happens when a HT rate has been in use and we | |
1128 | * loose connectivity with AP then mac80211 will first tell us that the | |
1129 | * current channel is not HT anymore before removing the station. In such a | |
1130 | * scenario the RXON flags will be updated to indicate we are not | |
1131 | * communicating HT anymore, but the LQ command may still contain HT rates. | |
1132 | * Test for this to prevent driver from sending LQ command between the time | |
1133 | * RXON flags are updated and when LQ command is updated. | |
1134 | */ | |
1135 | static bool is_lq_table_valid(struct iwl_priv *priv, | |
1136 | struct iwl_link_quality_cmd *lq) | |
1137 | { | |
1138 | int i; | |
1139 | struct iwl_ht_config *ht_conf = &priv->current_ht_config; | |
1140 | ||
1141 | if (ht_conf->is_ht) | |
1142 | return true; | |
1143 | ||
1144 | IWL_DEBUG_INFO(priv, "Channel %u is not an HT channel\n", | |
1145 | priv->active_rxon.channel); | |
1146 | for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) { | |
1147 | if (le32_to_cpu(lq->rs_table[i].rate_n_flags) & RATE_MCS_HT_MSK) { | |
1148 | IWL_DEBUG_INFO(priv, | |
1149 | "index %d of LQ expects HT channel\n", | |
1150 | i); | |
1151 | return false; | |
1152 | } | |
1153 | } | |
1154 | return true; | |
1155 | } | |
1156 | ||
fe6b23dd RC |
1157 | /** |
1158 | * iwl_send_lq_cmd() - Send link quality command | |
1159 | * @init: This command is sent as part of station initialization right | |
1160 | * after station has been added. | |
1161 | * | |
1162 | * The link quality command is sent as the last step of station creation. | |
1163 | * This is the special case in which init is set and we call a callback in | |
1164 | * this case to clear the state indicating that station creation is in | |
1165 | * progress. | |
1166 | */ | |
66c73db7 | 1167 | int iwl_send_lq_cmd(struct iwl_priv *priv, |
fe6b23dd | 1168 | struct iwl_link_quality_cmd *lq, u8 flags, bool init) |
66c73db7 | 1169 | { |
fe6b23dd RC |
1170 | int ret = 0; |
1171 | unsigned long flags_spin; | |
1172 | ||
66c73db7 TW |
1173 | struct iwl_host_cmd cmd = { |
1174 | .id = REPLY_TX_LINK_QUALITY_CMD, | |
1175 | .len = sizeof(struct iwl_link_quality_cmd), | |
c2acea8e | 1176 | .flags = flags, |
66c73db7 TW |
1177 | .data = lq, |
1178 | }; | |
1179 | ||
76c3c698 | 1180 | if (WARN_ON(lq->sta_id == IWL_INVALID_STATION)) |
66c73db7 TW |
1181 | return -EINVAL; |
1182 | ||
3ac7f146 | 1183 | iwl_dump_lq_cmd(priv, lq); |
fe6b23dd | 1184 | BUG_ON(init && (cmd.flags & CMD_ASYNC)); |
66c73db7 | 1185 | |
3bce6066 RC |
1186 | if (is_lq_table_valid(priv, lq)) |
1187 | ret = iwl_send_cmd(priv, &cmd); | |
1188 | else | |
1189 | ret = -EINVAL; | |
d2e210ae RC |
1190 | |
1191 | if (cmd.flags & CMD_ASYNC) | |
fe6b23dd | 1192 | return ret; |
66c73db7 | 1193 | |
fe6b23dd | 1194 | if (init) { |
91dd6c27 | 1195 | IWL_DEBUG_INFO(priv, "init LQ command complete, clearing sta addition status for sta %d\n", |
fe6b23dd RC |
1196 | lq->sta_id); |
1197 | spin_lock_irqsave(&priv->sta_lock, flags_spin); | |
1198 | priv->stations[lq->sta_id].used &= ~IWL_STA_UCODE_INPROGRESS; | |
1199 | spin_unlock_irqrestore(&priv->sta_lock, flags_spin); | |
1200 | } | |
d2e210ae | 1201 | return ret; |
66c73db7 TW |
1202 | } |
1203 | EXPORT_SYMBOL(iwl_send_lq_cmd); | |
1204 | ||
9a9ca65f | 1205 | /** |
2c810ccd JB |
1206 | * iwl_alloc_bcast_station - add broadcast station into driver's station table. |
1207 | * | |
1208 | * This adds the broadcast station into the driver's station table | |
1209 | * and marks it driver active, so that it will be restored to the | |
1210 | * device at the next best time. | |
9a9ca65f | 1211 | */ |
2c810ccd | 1212 | int iwl_alloc_bcast_station(struct iwl_priv *priv, bool init_lq) |
9a9ca65f | 1213 | { |
2c810ccd JB |
1214 | struct iwl_link_quality_cmd *link_cmd; |
1215 | unsigned long flags; | |
1216 | u8 sta_id; | |
1217 | ||
1218 | spin_lock_irqsave(&priv->sta_lock, flags); | |
1219 | sta_id = iwl_prep_station(priv, iwl_bcast_addr, false, NULL); | |
1220 | if (sta_id == IWL_INVALID_STATION) { | |
1221 | IWL_ERR(priv, "Unable to prepare broadcast station\n"); | |
1222 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
1223 | ||
1224 | return -EINVAL; | |
1225 | } | |
1226 | ||
1227 | priv->stations[sta_id].used |= IWL_STA_DRIVER_ACTIVE; | |
1228 | priv->stations[sta_id].used |= IWL_STA_BCAST; | |
1229 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
1230 | ||
1231 | if (init_lq) { | |
1232 | link_cmd = iwl_sta_alloc_lq(priv, sta_id); | |
1233 | if (!link_cmd) { | |
1234 | IWL_ERR(priv, | |
1235 | "Unable to initialize rate scaling for bcast station.\n"); | |
1236 | return -ENOMEM; | |
1237 | } | |
1238 | ||
1239 | spin_lock_irqsave(&priv->sta_lock, flags); | |
1240 | priv->stations[sta_id].lq = link_cmd; | |
1241 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
1242 | } | |
1243 | ||
1244 | return 0; | |
9a9ca65f | 1245 | } |
2c810ccd | 1246 | EXPORT_SYMBOL_GPL(iwl_alloc_bcast_station); |
9a9ca65f | 1247 | |
2c810ccd | 1248 | void iwl_dealloc_bcast_station(struct iwl_priv *priv) |
3459ab5a | 1249 | { |
2c810ccd JB |
1250 | unsigned long flags; |
1251 | int i; | |
fe6b23dd | 1252 | |
2c810ccd JB |
1253 | spin_lock_irqsave(&priv->sta_lock, flags); |
1254 | for (i = 0; i < priv->hw_params.max_stations; i++) { | |
1255 | if (!(priv->stations[i].used & IWL_STA_BCAST)) | |
1256 | continue; | |
1257 | ||
1258 | priv->stations[i].used &= ~IWL_STA_UCODE_ACTIVE; | |
1259 | priv->num_stations--; | |
1260 | BUG_ON(priv->num_stations < 0); | |
1261 | kfree(priv->stations[i].lq); | |
1262 | priv->stations[i].lq = NULL; | |
1263 | } | |
1264 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
3459ab5a | 1265 | } |
2c810ccd | 1266 | EXPORT_SYMBOL_GPL(iwl_dealloc_bcast_station); |
3459ab5a | 1267 | |
5083e563 | 1268 | /** |
9f58671e | 1269 | * iwl_sta_tx_modify_enable_tid - Enable Tx for this TID in station table |
5083e563 | 1270 | */ |
9f58671e | 1271 | void iwl_sta_tx_modify_enable_tid(struct iwl_priv *priv, int sta_id, int tid) |
5083e563 TW |
1272 | { |
1273 | unsigned long flags; | |
1274 | ||
1275 | /* Remove "disable" flag, to enable Tx for this TID */ | |
1276 | spin_lock_irqsave(&priv->sta_lock, flags); | |
1277 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_TID_DISABLE_TX; | |
1278 | priv->stations[sta_id].sta.tid_disable_tx &= cpu_to_le16(~(1 << tid)); | |
1279 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
1280 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
1281 | ||
1282 | iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC); | |
1283 | } | |
9f58671e TW |
1284 | EXPORT_SYMBOL(iwl_sta_tx_modify_enable_tid); |
1285 | ||
619753ff JB |
1286 | int iwl_sta_rx_agg_start(struct iwl_priv *priv, struct ieee80211_sta *sta, |
1287 | int tid, u16 ssn) | |
9f58671e TW |
1288 | { |
1289 | unsigned long flags; | |
1290 | int sta_id; | |
1291 | ||
619753ff | 1292 | sta_id = iwl_sta_id(sta); |
9f58671e TW |
1293 | if (sta_id == IWL_INVALID_STATION) |
1294 | return -ENXIO; | |
1295 | ||
1296 | spin_lock_irqsave(&priv->sta_lock, flags); | |
1297 | priv->stations[sta_id].sta.station_flags_msk = 0; | |
1298 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_ADDBA_TID_MSK; | |
1299 | priv->stations[sta_id].sta.add_immediate_ba_tid = (u8)tid; | |
1300 | priv->stations[sta_id].sta.add_immediate_ba_ssn = cpu_to_le16(ssn); | |
1301 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
1302 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
1303 | ||
1304 | return iwl_send_add_sta(priv, &priv->stations[sta_id].sta, | |
619753ff | 1305 | CMD_ASYNC); |
9f58671e TW |
1306 | } |
1307 | EXPORT_SYMBOL(iwl_sta_rx_agg_start); | |
1308 | ||
619753ff JB |
1309 | int iwl_sta_rx_agg_stop(struct iwl_priv *priv, struct ieee80211_sta *sta, |
1310 | int tid) | |
9f58671e TW |
1311 | { |
1312 | unsigned long flags; | |
1313 | int sta_id; | |
1314 | ||
619753ff | 1315 | sta_id = iwl_sta_id(sta); |
a2f1cbeb WYG |
1316 | if (sta_id == IWL_INVALID_STATION) { |
1317 | IWL_ERR(priv, "Invalid station for AGG tid %d\n", tid); | |
9f58671e | 1318 | return -ENXIO; |
a2f1cbeb | 1319 | } |
9f58671e TW |
1320 | |
1321 | spin_lock_irqsave(&priv->sta_lock, flags); | |
1322 | priv->stations[sta_id].sta.station_flags_msk = 0; | |
1323 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_DELBA_TID_MSK; | |
1324 | priv->stations[sta_id].sta.remove_immediate_ba_tid = (u8)tid; | |
1325 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
1326 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
1327 | ||
1328 | return iwl_send_add_sta(priv, &priv->stations[sta_id].sta, | |
1329 | CMD_ASYNC); | |
1330 | } | |
1331 | EXPORT_SYMBOL(iwl_sta_rx_agg_stop); | |
1332 | ||
6ab10ff8 | 1333 | void iwl_sta_modify_ps_wake(struct iwl_priv *priv, int sta_id) |
9f58671e TW |
1334 | { |
1335 | unsigned long flags; | |
1336 | ||
1337 | spin_lock_irqsave(&priv->sta_lock, flags); | |
1338 | priv->stations[sta_id].sta.station_flags &= ~STA_FLG_PWR_SAVE_MSK; | |
1339 | priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK; | |
1340 | priv->stations[sta_id].sta.sta.modify_mask = 0; | |
6ab10ff8 | 1341 | priv->stations[sta_id].sta.sleep_tx_count = 0; |
9f58671e TW |
1342 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; |
1343 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
1344 | ||
1345 | iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC); | |
1346 | } | |
6ab10ff8 | 1347 | EXPORT_SYMBOL(iwl_sta_modify_ps_wake); |
9f58671e | 1348 | |
6ab10ff8 | 1349 | void iwl_sta_modify_sleep_tx_count(struct iwl_priv *priv, int sta_id, int cnt) |
9f58671e | 1350 | { |
6ab10ff8 | 1351 | unsigned long flags; |
9f58671e | 1352 | |
6ab10ff8 JB |
1353 | spin_lock_irqsave(&priv->sta_lock, flags); |
1354 | priv->stations[sta_id].sta.station_flags |= STA_FLG_PWR_SAVE_MSK; | |
1355 | priv->stations[sta_id].sta.station_flags_msk = STA_FLG_PWR_SAVE_MSK; | |
1356 | priv->stations[sta_id].sta.sta.modify_mask = | |
1357 | STA_MODIFY_SLEEP_TX_COUNT_MSK; | |
1358 | priv->stations[sta_id].sta.sleep_tx_count = cpu_to_le16(cnt); | |
1359 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
1360 | spin_unlock_irqrestore(&priv->sta_lock, flags); | |
9f58671e | 1361 | |
6ab10ff8 | 1362 | iwl_send_add_sta(priv, &priv->stations[sta_id].sta, CMD_ASYNC); |
9f58671e | 1363 | } |
74bcdb33 | 1364 | EXPORT_SYMBOL(iwl_sta_modify_sleep_tx_count); |
fe6b23dd RC |
1365 | |
1366 | int iwl_mac_sta_remove(struct ieee80211_hw *hw, | |
fd1af15d JB |
1367 | struct ieee80211_vif *vif, |
1368 | struct ieee80211_sta *sta) | |
fe6b23dd | 1369 | { |
fe6b23dd | 1370 | struct iwl_priv *priv = hw->priv; |
fd1af15d JB |
1371 | struct iwl_station_priv_common *sta_common = (void *)sta->drv_priv; |
1372 | int ret; | |
1373 | ||
fe6b23dd RC |
1374 | IWL_DEBUG_INFO(priv, "received request to remove station %pM\n", |
1375 | sta->addr); | |
da5ae1cf RC |
1376 | mutex_lock(&priv->mutex); |
1377 | IWL_DEBUG_INFO(priv, "proceeding to remove station %pM\n", | |
1378 | sta->addr); | |
fd1af15d | 1379 | ret = iwl_remove_station(priv, sta_common->sta_id, sta->addr); |
fe6b23dd RC |
1380 | if (ret) |
1381 | IWL_ERR(priv, "Error removing station %pM\n", | |
1382 | sta->addr); | |
da5ae1cf | 1383 | mutex_unlock(&priv->mutex); |
fe6b23dd RC |
1384 | return ret; |
1385 | } | |
1386 | EXPORT_SYMBOL(iwl_mac_sta_remove); |