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a30e3112 JB |
1 | /****************************************************************************** |
2 | * | |
128e63ef | 3 | * Copyright(c) 2003 - 2013 Intel Corporation. All rights reserved. |
a30e3112 JB |
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: | |
25 | * Intel Linux Wireless <ilw@linux.intel.com> | |
26 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
27 | * | |
28 | *****************************************************************************/ | |
e7a0d0c4 | 29 | #include <linux/etherdevice.h> |
a30e3112 | 30 | #include <net/mac80211.h> |
bdfbf092 | 31 | #include "iwl-trans.h" |
1023fdc4 JB |
32 | #include "dev.h" |
33 | #include "agn.h" | |
a30e3112 | 34 | |
f32cadfc MV |
35 | const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; |
36 | ||
2da424b0 | 37 | static int iwl_sta_ucode_activate(struct iwl_priv *priv, u8 sta_id) |
c745f55b | 38 | { |
fa23cb04 JB |
39 | lockdep_assert_held(&priv->sta_lock); |
40 | ||
2da424b0 WYG |
41 | if (sta_id >= IWLAGN_STATION_COUNT) { |
42 | IWL_ERR(priv, "invalid sta_id %u", sta_id); | |
43 | return -EINVAL; | |
44 | } | |
c745f55b WYG |
45 | if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) |
46 | IWL_ERR(priv, "ACTIVATE a non DRIVER active station id %u " | |
47 | "addr %pM\n", | |
48 | sta_id, priv->stations[sta_id].sta.sta.addr); | |
49 | ||
50 | if (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE) { | |
51 | IWL_DEBUG_ASSOC(priv, | |
52 | "STA id %u addr %pM already present in uCode " | |
53 | "(according to driver)\n", | |
54 | sta_id, priv->stations[sta_id].sta.sta.addr); | |
55 | } else { | |
56 | priv->stations[sta_id].used |= IWL_STA_UCODE_ACTIVE; | |
57 | IWL_DEBUG_ASSOC(priv, "Added STA id %u addr %pM to uCode\n", | |
58 | sta_id, priv->stations[sta_id].sta.sta.addr); | |
59 | } | |
2da424b0 | 60 | return 0; |
c745f55b WYG |
61 | } |
62 | ||
63 | static int iwl_process_add_sta_resp(struct iwl_priv *priv, | |
64 | struct iwl_addsta_cmd *addsta, | |
65 | struct iwl_rx_packet *pkt) | |
66 | { | |
f8d7c1a1 | 67 | struct iwl_add_sta_resp *add_sta_resp = (void *)pkt->data; |
c745f55b | 68 | u8 sta_id = addsta->sta.sta_id; |
c745f55b WYG |
69 | int ret = -EIO; |
70 | ||
71 | if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) { | |
72 | IWL_ERR(priv, "Bad return from REPLY_ADD_STA (0x%08X)\n", | |
73 | pkt->hdr.flags); | |
74 | return ret; | |
75 | } | |
76 | ||
77 | IWL_DEBUG_INFO(priv, "Processing response for adding station %u\n", | |
78 | sta_id); | |
79 | ||
fa23cb04 | 80 | spin_lock(&priv->sta_lock); |
c745f55b | 81 | |
f8d7c1a1 | 82 | switch (add_sta_resp->status) { |
c745f55b WYG |
83 | case ADD_STA_SUCCESS_MSK: |
84 | IWL_DEBUG_INFO(priv, "REPLY_ADD_STA PASSED\n"); | |
2da424b0 | 85 | ret = iwl_sta_ucode_activate(priv, sta_id); |
c745f55b WYG |
86 | break; |
87 | case ADD_STA_NO_ROOM_IN_TABLE: | |
88 | IWL_ERR(priv, "Adding station %d failed, no room in table.\n", | |
89 | sta_id); | |
90 | break; | |
91 | case ADD_STA_NO_BLOCK_ACK_RESOURCE: | |
92 | IWL_ERR(priv, "Adding station %d failed, no block ack " | |
93 | "resource.\n", sta_id); | |
94 | break; | |
95 | case ADD_STA_MODIFY_NON_EXIST_STA: | |
96 | IWL_ERR(priv, "Attempting to modify non-existing station %d\n", | |
97 | sta_id); | |
98 | break; | |
99 | default: | |
100 | IWL_DEBUG_ASSOC(priv, "Received REPLY_ADD_STA:(0x%08X)\n", | |
f8d7c1a1 | 101 | add_sta_resp->status); |
c745f55b WYG |
102 | break; |
103 | } | |
104 | ||
105 | IWL_DEBUG_INFO(priv, "%s station id %u addr %pM\n", | |
106 | priv->stations[sta_id].sta.mode == | |
107 | STA_CONTROL_MODIFY_MSK ? "Modified" : "Added", | |
108 | sta_id, priv->stations[sta_id].sta.sta.addr); | |
109 | ||
110 | /* | |
111 | * XXX: The MAC address in the command buffer is often changed from | |
112 | * the original sent to the device. That is, the MAC address | |
113 | * written to the command buffer often is not the same MAC address | |
114 | * read from the command buffer when the command returns. This | |
115 | * issue has not yet been resolved and this debugging is left to | |
116 | * observe the problem. | |
117 | */ | |
118 | IWL_DEBUG_INFO(priv, "%s station according to cmd buffer %pM\n", | |
119 | priv->stations[sta_id].sta.mode == | |
120 | STA_CONTROL_MODIFY_MSK ? "Modified" : "Added", | |
121 | addsta->sta.addr); | |
fa23cb04 | 122 | spin_unlock(&priv->sta_lock); |
c745f55b WYG |
123 | |
124 | return ret; | |
125 | } | |
126 | ||
48a2d66f | 127 | int iwl_add_sta_callback(struct iwl_priv *priv, struct iwl_rx_cmd_buffer *rxb, |
c745f55b WYG |
128 | struct iwl_device_cmd *cmd) |
129 | { | |
130 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
c745f55b | 131 | |
513aa3b0 JB |
132 | if (!cmd) |
133 | return 0; | |
134 | ||
135 | return iwl_process_add_sta_resp(priv, (void *)cmd->payload, pkt); | |
c745f55b WYG |
136 | } |
137 | ||
c745f55b WYG |
138 | int iwl_send_add_sta(struct iwl_priv *priv, |
139 | struct iwl_addsta_cmd *sta, u8 flags) | |
140 | { | |
141 | int ret = 0; | |
c745f55b WYG |
142 | struct iwl_host_cmd cmd = { |
143 | .id = REPLY_ADD_STA, | |
144 | .flags = flags, | |
69b172f7 JB |
145 | .data = { sta, }, |
146 | .len = { sizeof(*sta), }, | |
c745f55b WYG |
147 | }; |
148 | u8 sta_id __maybe_unused = sta->sta.sta_id; | |
149 | ||
150 | IWL_DEBUG_INFO(priv, "Adding sta %u (%pM) %ssynchronously\n", | |
151 | sta_id, sta->sta.addr, flags & CMD_ASYNC ? "a" : ""); | |
152 | ||
153 | if (!(flags & CMD_ASYNC)) { | |
96791422 | 154 | cmd.flags |= CMD_WANT_SKB | CMD_WANT_HCMD; |
c745f55b WYG |
155 | might_sleep(); |
156 | } | |
157 | ||
e10a0533 | 158 | ret = iwl_dvm_send_cmd(priv, &cmd); |
c745f55b WYG |
159 | |
160 | if (ret || (flags & CMD_ASYNC)) | |
161 | return ret; | |
162 | /*else the command was successfully sent in SYNC mode, need to free | |
163 | * the reply page */ | |
164 | ||
65b94a4a | 165 | iwl_free_resp(&cmd); |
c745f55b WYG |
166 | |
167 | if (cmd.handler_status) | |
168 | IWL_ERR(priv, "%s - error in the CMD response %d", __func__, | |
169 | cmd.handler_status); | |
170 | ||
171 | return cmd.handler_status; | |
172 | } | |
173 | ||
5edc565d MV |
174 | bool iwl_is_ht40_tx_allowed(struct iwl_priv *priv, |
175 | struct iwl_rxon_context *ctx, | |
e1a0c6b3 | 176 | struct ieee80211_sta *sta) |
5edc565d MV |
177 | { |
178 | if (!ctx->ht.enabled || !ctx->ht.is_40mhz) | |
179 | return false; | |
180 | ||
26a7ca9a JB |
181 | #ifdef CONFIG_IWLWIFI_DEBUGFS |
182 | if (priv->disable_ht40) | |
183 | return false; | |
184 | #endif | |
185 | ||
e1a0c6b3 JB |
186 | /* special case for RXON */ |
187 | if (!sta) | |
26a7ca9a JB |
188 | return true; |
189 | ||
e1a0c6b3 | 190 | return sta->bandwidth >= IEEE80211_STA_RX_BW_40; |
5edc565d MV |
191 | } |
192 | ||
ab0bd5b3 JB |
193 | static void iwl_sta_calc_ht_flags(struct iwl_priv *priv, |
194 | struct ieee80211_sta *sta, | |
195 | struct iwl_rxon_context *ctx, | |
196 | __le32 *flags, __le32 *mask) | |
c745f55b WYG |
197 | { |
198 | struct ieee80211_sta_ht_cap *sta_ht_inf = &sta->ht_cap; | |
c745f55b WYG |
199 | u8 mimo_ps_mode; |
200 | ||
ab0bd5b3 JB |
201 | *mask = STA_FLG_RTS_MIMO_PROT_MSK | |
202 | STA_FLG_MIMO_DIS_MSK | | |
203 | STA_FLG_HT40_EN_MSK | | |
204 | STA_FLG_MAX_AGG_SIZE_MSK | | |
205 | STA_FLG_AGG_MPDU_DENSITY_MSK; | |
206 | *flags = 0; | |
207 | ||
c745f55b | 208 | if (!sta || !sta_ht_inf->ht_supported) |
ab0bd5b3 | 209 | return; |
c745f55b WYG |
210 | |
211 | mimo_ps_mode = (sta_ht_inf->cap & IEEE80211_HT_CAP_SM_PS) >> 2; | |
ab0bd5b3 JB |
212 | |
213 | IWL_DEBUG_INFO(priv, "STA %pM SM PS mode: %s\n", | |
a35e2708 | 214 | sta->addr, |
c745f55b WYG |
215 | (mimo_ps_mode == WLAN_HT_CAP_SM_PS_STATIC) ? |
216 | "static" : | |
217 | (mimo_ps_mode == WLAN_HT_CAP_SM_PS_DYNAMIC) ? | |
218 | "dynamic" : "disabled"); | |
219 | ||
c745f55b WYG |
220 | switch (mimo_ps_mode) { |
221 | case WLAN_HT_CAP_SM_PS_STATIC: | |
ab0bd5b3 | 222 | *flags |= STA_FLG_MIMO_DIS_MSK; |
c745f55b WYG |
223 | break; |
224 | case WLAN_HT_CAP_SM_PS_DYNAMIC: | |
ab0bd5b3 | 225 | *flags |= STA_FLG_RTS_MIMO_PROT_MSK; |
c745f55b WYG |
226 | break; |
227 | case WLAN_HT_CAP_SM_PS_DISABLED: | |
228 | break; | |
229 | default: | |
230 | IWL_WARN(priv, "Invalid MIMO PS mode %d\n", mimo_ps_mode); | |
231 | break; | |
232 | } | |
233 | ||
ab0bd5b3 JB |
234 | *flags |= cpu_to_le32( |
235 | (u32)sta_ht_inf->ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS); | |
c745f55b | 236 | |
ab0bd5b3 JB |
237 | *flags |= cpu_to_le32( |
238 | (u32)sta_ht_inf->ampdu_density << STA_FLG_AGG_MPDU_DENSITY_POS); | |
c745f55b | 239 | |
e1a0c6b3 | 240 | if (iwl_is_ht40_tx_allowed(priv, ctx, sta)) |
ab0bd5b3 JB |
241 | *flags |= STA_FLG_HT40_EN_MSK; |
242 | } | |
243 | ||
244 | int iwl_sta_update_ht(struct iwl_priv *priv, struct iwl_rxon_context *ctx, | |
245 | struct ieee80211_sta *sta) | |
246 | { | |
247 | u8 sta_id = iwl_sta_id(sta); | |
248 | __le32 flags, mask; | |
249 | struct iwl_addsta_cmd cmd; | |
250 | ||
251 | if (WARN_ON_ONCE(sta_id == IWL_INVALID_STATION)) | |
252 | return -EINVAL; | |
c745f55b | 253 | |
ab0bd5b3 JB |
254 | iwl_sta_calc_ht_flags(priv, sta, ctx, &flags, &mask); |
255 | ||
256 | spin_lock_bh(&priv->sta_lock); | |
257 | priv->stations[sta_id].sta.station_flags &= ~mask; | |
258 | priv->stations[sta_id].sta.station_flags |= flags; | |
259 | spin_unlock_bh(&priv->sta_lock); | |
260 | ||
261 | memset(&cmd, 0, sizeof(cmd)); | |
262 | cmd.mode = STA_CONTROL_MODIFY_MSK; | |
263 | cmd.station_flags_msk = mask; | |
264 | cmd.station_flags = flags; | |
265 | cmd.sta.sta_id = sta_id; | |
266 | ||
267 | return iwl_send_add_sta(priv, &cmd, CMD_SYNC); | |
268 | } | |
269 | ||
270 | static void iwl_set_ht_add_station(struct iwl_priv *priv, u8 index, | |
271 | struct ieee80211_sta *sta, | |
272 | struct iwl_rxon_context *ctx) | |
273 | { | |
274 | __le32 flags, mask; | |
275 | ||
276 | iwl_sta_calc_ht_flags(priv, sta, ctx, &flags, &mask); | |
277 | ||
278 | lockdep_assert_held(&priv->sta_lock); | |
279 | priv->stations[index].sta.station_flags &= ~mask; | |
280 | priv->stations[index].sta.station_flags |= flags; | |
c745f55b WYG |
281 | } |
282 | ||
283 | /** | |
284 | * iwl_prep_station - Prepare station information for addition | |
285 | * | |
286 | * should be called with sta_lock held | |
287 | */ | |
288 | u8 iwl_prep_station(struct iwl_priv *priv, struct iwl_rxon_context *ctx, | |
289 | const u8 *addr, bool is_ap, struct ieee80211_sta *sta) | |
290 | { | |
291 | struct iwl_station_entry *station; | |
292 | int i; | |
293 | u8 sta_id = IWL_INVALID_STATION; | |
294 | ||
295 | if (is_ap) | |
296 | sta_id = ctx->ap_sta_id; | |
297 | else if (is_broadcast_ether_addr(addr)) | |
298 | sta_id = ctx->bcast_sta_id; | |
299 | else | |
300 | for (i = IWL_STA_ID; i < IWLAGN_STATION_COUNT; i++) { | |
2e42e474 JP |
301 | if (ether_addr_equal(priv->stations[i].sta.sta.addr, |
302 | addr)) { | |
c745f55b WYG |
303 | sta_id = i; |
304 | break; | |
305 | } | |
306 | ||
307 | if (!priv->stations[i].used && | |
308 | sta_id == IWL_INVALID_STATION) | |
309 | sta_id = i; | |
310 | } | |
311 | ||
312 | /* | |
313 | * These two conditions have the same outcome, but keep them | |
314 | * separate | |
315 | */ | |
316 | if (unlikely(sta_id == IWL_INVALID_STATION)) | |
317 | return sta_id; | |
318 | ||
319 | /* | |
320 | * uCode is not able to deal with multiple requests to add a | |
321 | * station. Keep track if one is in progress so that we do not send | |
322 | * another. | |
323 | */ | |
324 | if (priv->stations[sta_id].used & IWL_STA_UCODE_INPROGRESS) { | |
325 | IWL_DEBUG_INFO(priv, "STA %d already in process of being " | |
326 | "added.\n", sta_id); | |
327 | return sta_id; | |
328 | } | |
329 | ||
330 | if ((priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE) && | |
331 | (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE) && | |
2e42e474 | 332 | ether_addr_equal(priv->stations[sta_id].sta.sta.addr, addr)) { |
c745f55b WYG |
333 | IWL_DEBUG_ASSOC(priv, "STA %d (%pM) already added, not " |
334 | "adding again.\n", sta_id, addr); | |
335 | return sta_id; | |
336 | } | |
337 | ||
338 | station = &priv->stations[sta_id]; | |
339 | station->used = IWL_STA_DRIVER_ACTIVE; | |
340 | IWL_DEBUG_ASSOC(priv, "Add STA to driver ID %d: %pM\n", | |
341 | sta_id, addr); | |
342 | priv->num_stations++; | |
343 | ||
344 | /* Set up the REPLY_ADD_STA command to send to device */ | |
345 | memset(&station->sta, 0, sizeof(struct iwl_addsta_cmd)); | |
346 | memcpy(station->sta.sta.addr, addr, ETH_ALEN); | |
347 | station->sta.mode = 0; | |
348 | station->sta.sta.sta_id = sta_id; | |
349 | station->sta.station_flags = ctx->station_flags; | |
350 | station->ctxid = ctx->ctxid; | |
351 | ||
352 | if (sta) { | |
353 | struct iwl_station_priv *sta_priv; | |
354 | ||
355 | sta_priv = (void *)sta->drv_priv; | |
356 | sta_priv->ctx = ctx; | |
357 | } | |
358 | ||
359 | /* | |
360 | * OK to call unconditionally, since local stations (IBSS BSSID | |
361 | * STA and broadcast STA) pass in a NULL sta, and mac80211 | |
362 | * doesn't allow HT IBSS. | |
363 | */ | |
364 | iwl_set_ht_add_station(priv, sta_id, sta, ctx); | |
365 | ||
366 | return sta_id; | |
367 | ||
368 | } | |
369 | ||
370 | #define STA_WAIT_TIMEOUT (HZ/2) | |
371 | ||
372 | /** | |
373 | * iwl_add_station_common - | |
374 | */ | |
375 | int iwl_add_station_common(struct iwl_priv *priv, struct iwl_rxon_context *ctx, | |
376 | const u8 *addr, bool is_ap, | |
377 | struct ieee80211_sta *sta, u8 *sta_id_r) | |
378 | { | |
c745f55b WYG |
379 | int ret = 0; |
380 | u8 sta_id; | |
381 | struct iwl_addsta_cmd sta_cmd; | |
382 | ||
383 | *sta_id_r = 0; | |
fa23cb04 | 384 | spin_lock_bh(&priv->sta_lock); |
c745f55b WYG |
385 | sta_id = iwl_prep_station(priv, ctx, addr, is_ap, sta); |
386 | if (sta_id == IWL_INVALID_STATION) { | |
387 | IWL_ERR(priv, "Unable to prepare station %pM for addition\n", | |
388 | addr); | |
fa23cb04 | 389 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
390 | return -EINVAL; |
391 | } | |
392 | ||
393 | /* | |
394 | * uCode is not able to deal with multiple requests to add a | |
395 | * station. Keep track if one is in progress so that we do not send | |
396 | * another. | |
397 | */ | |
398 | if (priv->stations[sta_id].used & IWL_STA_UCODE_INPROGRESS) { | |
399 | IWL_DEBUG_INFO(priv, "STA %d already in process of being " | |
400 | "added.\n", sta_id); | |
fa23cb04 | 401 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
402 | return -EEXIST; |
403 | } | |
404 | ||
405 | if ((priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE) && | |
406 | (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) { | |
407 | IWL_DEBUG_ASSOC(priv, "STA %d (%pM) already added, not " | |
408 | "adding again.\n", sta_id, addr); | |
fa23cb04 | 409 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
410 | return -EEXIST; |
411 | } | |
412 | ||
413 | priv->stations[sta_id].used |= IWL_STA_UCODE_INPROGRESS; | |
414 | memcpy(&sta_cmd, &priv->stations[sta_id].sta, | |
415 | sizeof(struct iwl_addsta_cmd)); | |
fa23cb04 | 416 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
417 | |
418 | /* Add station to device's station table */ | |
419 | ret = iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); | |
420 | if (ret) { | |
fa23cb04 | 421 | spin_lock_bh(&priv->sta_lock); |
c745f55b WYG |
422 | IWL_ERR(priv, "Adding station %pM failed.\n", |
423 | priv->stations[sta_id].sta.sta.addr); | |
424 | priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE; | |
425 | priv->stations[sta_id].used &= ~IWL_STA_UCODE_INPROGRESS; | |
fa23cb04 | 426 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
427 | } |
428 | *sta_id_r = sta_id; | |
429 | return ret; | |
430 | } | |
431 | ||
432 | /** | |
433 | * iwl_sta_ucode_deactivate - deactivate ucode status for a station | |
c745f55b WYG |
434 | */ |
435 | static void iwl_sta_ucode_deactivate(struct iwl_priv *priv, u8 sta_id) | |
436 | { | |
fa23cb04 JB |
437 | lockdep_assert_held(&priv->sta_lock); |
438 | ||
c745f55b WYG |
439 | /* Ucode must be active and driver must be non active */ |
440 | if ((priv->stations[sta_id].used & | |
441 | (IWL_STA_UCODE_ACTIVE | IWL_STA_DRIVER_ACTIVE)) != | |
442 | IWL_STA_UCODE_ACTIVE) | |
443 | IWL_ERR(priv, "removed non active STA %u\n", sta_id); | |
444 | ||
445 | priv->stations[sta_id].used &= ~IWL_STA_UCODE_ACTIVE; | |
446 | ||
447 | memset(&priv->stations[sta_id], 0, sizeof(struct iwl_station_entry)); | |
448 | IWL_DEBUG_ASSOC(priv, "Removed STA %u\n", sta_id); | |
449 | } | |
450 | ||
451 | static int iwl_send_remove_station(struct iwl_priv *priv, | |
452 | const u8 *addr, int sta_id, | |
453 | bool temporary) | |
454 | { | |
455 | struct iwl_rx_packet *pkt; | |
456 | int ret; | |
c745f55b WYG |
457 | struct iwl_rem_sta_cmd rm_sta_cmd; |
458 | ||
459 | struct iwl_host_cmd cmd = { | |
460 | .id = REPLY_REMOVE_STA, | |
461 | .len = { sizeof(struct iwl_rem_sta_cmd), }, | |
462 | .flags = CMD_SYNC, | |
463 | .data = { &rm_sta_cmd, }, | |
464 | }; | |
465 | ||
466 | memset(&rm_sta_cmd, 0, sizeof(rm_sta_cmd)); | |
467 | rm_sta_cmd.num_sta = 1; | |
468 | memcpy(&rm_sta_cmd.addr, addr, ETH_ALEN); | |
469 | ||
470 | cmd.flags |= CMD_WANT_SKB; | |
471 | ||
e10a0533 | 472 | ret = iwl_dvm_send_cmd(priv, &cmd); |
c745f55b WYG |
473 | |
474 | if (ret) | |
475 | return ret; | |
476 | ||
65b94a4a | 477 | pkt = cmd.resp_pkt; |
c745f55b WYG |
478 | if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) { |
479 | IWL_ERR(priv, "Bad return from REPLY_REMOVE_STA (0x%08X)\n", | |
480 | pkt->hdr.flags); | |
481 | ret = -EIO; | |
482 | } | |
483 | ||
484 | if (!ret) { | |
f8d7c1a1 JB |
485 | struct iwl_rem_sta_resp *rem_sta_resp = (void *)pkt->data; |
486 | switch (rem_sta_resp->status) { | |
c745f55b WYG |
487 | case REM_STA_SUCCESS_MSK: |
488 | if (!temporary) { | |
fa23cb04 | 489 | spin_lock_bh(&priv->sta_lock); |
c745f55b | 490 | iwl_sta_ucode_deactivate(priv, sta_id); |
fa23cb04 | 491 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
492 | } |
493 | IWL_DEBUG_ASSOC(priv, "REPLY_REMOVE_STA PASSED\n"); | |
494 | break; | |
495 | default: | |
496 | ret = -EIO; | |
497 | IWL_ERR(priv, "REPLY_REMOVE_STA failed\n"); | |
498 | break; | |
499 | } | |
500 | } | |
65b94a4a | 501 | iwl_free_resp(&cmd); |
c745f55b WYG |
502 | |
503 | return ret; | |
504 | } | |
505 | ||
506 | /** | |
507 | * iwl_remove_station - Remove driver's knowledge of station. | |
508 | */ | |
509 | int iwl_remove_station(struct iwl_priv *priv, const u8 sta_id, | |
510 | const u8 *addr) | |
511 | { | |
855c2ee8 | 512 | u8 tid; |
c745f55b | 513 | |
83626404 | 514 | if (!iwl_is_ready(priv)) { |
c745f55b WYG |
515 | IWL_DEBUG_INFO(priv, |
516 | "Unable to remove station %pM, device not ready.\n", | |
517 | addr); | |
518 | /* | |
519 | * It is typical for stations to be removed when we are | |
520 | * going down. Return success since device will be down | |
521 | * soon anyway | |
522 | */ | |
523 | return 0; | |
524 | } | |
525 | ||
526 | IWL_DEBUG_ASSOC(priv, "Removing STA from driver:%d %pM\n", | |
527 | sta_id, addr); | |
528 | ||
529 | if (WARN_ON(sta_id == IWL_INVALID_STATION)) | |
530 | return -EINVAL; | |
531 | ||
fa23cb04 | 532 | spin_lock_bh(&priv->sta_lock); |
c745f55b WYG |
533 | |
534 | if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) { | |
535 | IWL_DEBUG_INFO(priv, "Removing %pM but non DRIVER active\n", | |
536 | addr); | |
537 | goto out_err; | |
538 | } | |
539 | ||
540 | if (!(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) { | |
541 | IWL_DEBUG_INFO(priv, "Removing %pM but non UCODE active\n", | |
542 | addr); | |
543 | goto out_err; | |
544 | } | |
545 | ||
546 | if (priv->stations[sta_id].used & IWL_STA_LOCAL) { | |
547 | kfree(priv->stations[sta_id].lq); | |
548 | priv->stations[sta_id].lq = NULL; | |
549 | } | |
550 | ||
855c2ee8 EG |
551 | for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) |
552 | memset(&priv->tid_data[sta_id][tid], 0, | |
553 | sizeof(priv->tid_data[sta_id][tid])); | |
554 | ||
c745f55b WYG |
555 | priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE; |
556 | ||
557 | priv->num_stations--; | |
558 | ||
559 | if (WARN_ON(priv->num_stations < 0)) | |
560 | priv->num_stations = 0; | |
561 | ||
fa23cb04 | 562 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
563 | |
564 | return iwl_send_remove_station(priv, addr, sta_id, false); | |
565 | out_err: | |
fa23cb04 | 566 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
567 | return -EINVAL; |
568 | } | |
569 | ||
97420515 JB |
570 | void iwl_deactivate_station(struct iwl_priv *priv, const u8 sta_id, |
571 | const u8 *addr) | |
572 | { | |
573 | u8 tid; | |
574 | ||
575 | if (!iwl_is_ready(priv)) { | |
576 | IWL_DEBUG_INFO(priv, | |
577 | "Unable to remove station %pM, device not ready.\n", | |
578 | addr); | |
579 | return; | |
580 | } | |
581 | ||
582 | IWL_DEBUG_ASSOC(priv, "Deactivating STA: %pM (%d)\n", addr, sta_id); | |
583 | ||
584 | if (WARN_ON_ONCE(sta_id == IWL_INVALID_STATION)) | |
585 | return; | |
586 | ||
587 | spin_lock_bh(&priv->sta_lock); | |
588 | ||
589 | WARN_ON_ONCE(!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)); | |
590 | ||
591 | for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) | |
592 | memset(&priv->tid_data[sta_id][tid], 0, | |
593 | sizeof(priv->tid_data[sta_id][tid])); | |
594 | ||
595 | priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE; | |
596 | ||
597 | priv->num_stations--; | |
598 | ||
599 | if (WARN_ON_ONCE(priv->num_stations < 0)) | |
600 | priv->num_stations = 0; | |
601 | ||
602 | spin_unlock_bh(&priv->sta_lock); | |
603 | } | |
604 | ||
4dcba6d3 JB |
605 | static void iwl_sta_fill_lq(struct iwl_priv *priv, struct iwl_rxon_context *ctx, |
606 | u8 sta_id, struct iwl_link_quality_cmd *link_cmd) | |
607 | { | |
608 | int i, r; | |
609 | u32 rate_flags = 0; | |
610 | __le32 rate_n_flags; | |
611 | ||
612 | lockdep_assert_held(&priv->mutex); | |
613 | ||
614 | memset(link_cmd, 0, sizeof(*link_cmd)); | |
615 | ||
616 | /* Set up the rate scaling to start at selected rate, fall back | |
617 | * all the way down to 1M in IEEE order, and then spin on 1M */ | |
618 | if (priv->band == IEEE80211_BAND_5GHZ) | |
619 | r = IWL_RATE_6M_INDEX; | |
620 | else if (ctx && ctx->vif && ctx->vif->p2p) | |
621 | r = IWL_RATE_6M_INDEX; | |
622 | else | |
623 | r = IWL_RATE_1M_INDEX; | |
624 | ||
625 | if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE) | |
626 | rate_flags |= RATE_MCS_CCK_MSK; | |
627 | ||
b7998c8b | 628 | rate_flags |= first_antenna(priv->nvm_data->valid_tx_ant) << |
4dcba6d3 JB |
629 | RATE_MCS_ANT_POS; |
630 | rate_n_flags = iwl_hw_set_rate_n_flags(iwl_rates[r].plcp, rate_flags); | |
631 | for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) | |
632 | link_cmd->rs_table[i].rate_n_flags = rate_n_flags; | |
633 | ||
634 | link_cmd->general_params.single_stream_ant_msk = | |
b7998c8b | 635 | first_antenna(priv->nvm_data->valid_tx_ant); |
4dcba6d3 JB |
636 | |
637 | link_cmd->general_params.dual_stream_ant_msk = | |
b7998c8b EL |
638 | priv->nvm_data->valid_tx_ant & |
639 | ~first_antenna(priv->nvm_data->valid_tx_ant); | |
4dcba6d3 JB |
640 | if (!link_cmd->general_params.dual_stream_ant_msk) { |
641 | link_cmd->general_params.dual_stream_ant_msk = ANT_AB; | |
b7998c8b | 642 | } else if (num_of_ant(priv->nvm_data->valid_tx_ant) == 2) { |
4dcba6d3 | 643 | link_cmd->general_params.dual_stream_ant_msk = |
b7998c8b | 644 | priv->nvm_data->valid_tx_ant; |
4dcba6d3 JB |
645 | } |
646 | ||
647 | link_cmd->agg_params.agg_dis_start_th = | |
648 | LINK_QUAL_AGG_DISABLE_START_DEF; | |
649 | link_cmd->agg_params.agg_time_limit = | |
650 | cpu_to_le16(LINK_QUAL_AGG_TIME_LIMIT_DEF); | |
651 | ||
652 | link_cmd->sta_id = sta_id; | |
653 | } | |
654 | ||
c745f55b WYG |
655 | /** |
656 | * iwl_clear_ucode_stations - clear ucode station table bits | |
657 | * | |
658 | * This function clears all the bits in the driver indicating | |
659 | * which stations are active in the ucode. Call when something | |
660 | * other than explicit station management would cause this in | |
661 | * the ucode, e.g. unassociated RXON. | |
662 | */ | |
663 | void iwl_clear_ucode_stations(struct iwl_priv *priv, | |
664 | struct iwl_rxon_context *ctx) | |
665 | { | |
666 | int i; | |
c745f55b WYG |
667 | bool cleared = false; |
668 | ||
669 | IWL_DEBUG_INFO(priv, "Clearing ucode stations in driver\n"); | |
670 | ||
fa23cb04 | 671 | spin_lock_bh(&priv->sta_lock); |
c745f55b WYG |
672 | for (i = 0; i < IWLAGN_STATION_COUNT; i++) { |
673 | if (ctx && ctx->ctxid != priv->stations[i].ctxid) | |
674 | continue; | |
675 | ||
676 | if (priv->stations[i].used & IWL_STA_UCODE_ACTIVE) { | |
677 | IWL_DEBUG_INFO(priv, | |
678 | "Clearing ucode active for station %d\n", i); | |
679 | priv->stations[i].used &= ~IWL_STA_UCODE_ACTIVE; | |
680 | cleared = true; | |
681 | } | |
682 | } | |
fa23cb04 | 683 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
684 | |
685 | if (!cleared) | |
686 | IWL_DEBUG_INFO(priv, | |
687 | "No active stations found to be cleared\n"); | |
688 | } | |
689 | ||
690 | /** | |
691 | * iwl_restore_stations() - Restore driver known stations to device | |
692 | * | |
693 | * All stations considered active by driver, but not present in ucode, is | |
694 | * restored. | |
695 | * | |
696 | * Function sleeps. | |
697 | */ | |
698 | void iwl_restore_stations(struct iwl_priv *priv, struct iwl_rxon_context *ctx) | |
699 | { | |
700 | struct iwl_addsta_cmd sta_cmd; | |
701 | struct iwl_link_quality_cmd lq; | |
c745f55b WYG |
702 | int i; |
703 | bool found = false; | |
704 | int ret; | |
705 | bool send_lq; | |
706 | ||
83626404 | 707 | if (!iwl_is_ready(priv)) { |
c745f55b WYG |
708 | IWL_DEBUG_INFO(priv, |
709 | "Not ready yet, not restoring any stations.\n"); | |
710 | return; | |
711 | } | |
712 | ||
713 | IWL_DEBUG_ASSOC(priv, "Restoring all known stations ... start.\n"); | |
fa23cb04 | 714 | spin_lock_bh(&priv->sta_lock); |
c745f55b WYG |
715 | for (i = 0; i < IWLAGN_STATION_COUNT; i++) { |
716 | if (ctx->ctxid != priv->stations[i].ctxid) | |
717 | continue; | |
718 | if ((priv->stations[i].used & IWL_STA_DRIVER_ACTIVE) && | |
719 | !(priv->stations[i].used & IWL_STA_UCODE_ACTIVE)) { | |
720 | IWL_DEBUG_ASSOC(priv, "Restoring sta %pM\n", | |
721 | priv->stations[i].sta.sta.addr); | |
722 | priv->stations[i].sta.mode = 0; | |
723 | priv->stations[i].used |= IWL_STA_UCODE_INPROGRESS; | |
724 | found = true; | |
725 | } | |
726 | } | |
727 | ||
728 | for (i = 0; i < IWLAGN_STATION_COUNT; i++) { | |
729 | if ((priv->stations[i].used & IWL_STA_UCODE_INPROGRESS)) { | |
730 | memcpy(&sta_cmd, &priv->stations[i].sta, | |
731 | sizeof(struct iwl_addsta_cmd)); | |
732 | send_lq = false; | |
733 | if (priv->stations[i].lq) { | |
15b86bff | 734 | if (priv->wowlan) |
c745f55b WYG |
735 | iwl_sta_fill_lq(priv, ctx, i, &lq); |
736 | else | |
737 | memcpy(&lq, priv->stations[i].lq, | |
738 | sizeof(struct iwl_link_quality_cmd)); | |
739 | send_lq = true; | |
740 | } | |
fa23cb04 | 741 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
742 | ret = iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); |
743 | if (ret) { | |
fa23cb04 | 744 | spin_lock_bh(&priv->sta_lock); |
c745f55b WYG |
745 | IWL_ERR(priv, "Adding station %pM failed.\n", |
746 | priv->stations[i].sta.sta.addr); | |
747 | priv->stations[i].used &= | |
748 | ~IWL_STA_DRIVER_ACTIVE; | |
749 | priv->stations[i].used &= | |
750 | ~IWL_STA_UCODE_INPROGRESS; | |
f4c37176 | 751 | continue; |
c745f55b WYG |
752 | } |
753 | /* | |
754 | * Rate scaling has already been initialized, send | |
755 | * current LQ command | |
756 | */ | |
757 | if (send_lq) | |
758 | iwl_send_lq_cmd(priv, ctx, &lq, | |
759 | CMD_SYNC, true); | |
fa23cb04 | 760 | spin_lock_bh(&priv->sta_lock); |
c745f55b WYG |
761 | priv->stations[i].used &= ~IWL_STA_UCODE_INPROGRESS; |
762 | } | |
763 | } | |
764 | ||
fa23cb04 | 765 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
766 | if (!found) |
767 | IWL_DEBUG_INFO(priv, "Restoring all known stations .... " | |
768 | "no stations to be restored.\n"); | |
769 | else | |
770 | IWL_DEBUG_INFO(priv, "Restoring all known stations .... " | |
771 | "complete.\n"); | |
772 | } | |
773 | ||
c745f55b WYG |
774 | int iwl_get_free_ucode_key_offset(struct iwl_priv *priv) |
775 | { | |
776 | int i; | |
777 | ||
778 | for (i = 0; i < priv->sta_key_max_num; i++) | |
779 | if (!test_and_set_bit(i, &priv->ucode_key_table)) | |
780 | return i; | |
781 | ||
782 | return WEP_INVALID_OFFSET; | |
783 | } | |
784 | ||
785 | void iwl_dealloc_bcast_stations(struct iwl_priv *priv) | |
786 | { | |
c745f55b WYG |
787 | int i; |
788 | ||
fa23cb04 | 789 | spin_lock_bh(&priv->sta_lock); |
c745f55b WYG |
790 | for (i = 0; i < IWLAGN_STATION_COUNT; i++) { |
791 | if (!(priv->stations[i].used & IWL_STA_BCAST)) | |
792 | continue; | |
793 | ||
794 | priv->stations[i].used &= ~IWL_STA_UCODE_ACTIVE; | |
795 | priv->num_stations--; | |
796 | if (WARN_ON(priv->num_stations < 0)) | |
797 | priv->num_stations = 0; | |
798 | kfree(priv->stations[i].lq); | |
799 | priv->stations[i].lq = NULL; | |
800 | } | |
fa23cb04 | 801 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
802 | } |
803 | ||
804 | #ifdef CONFIG_IWLWIFI_DEBUG | |
805 | static void iwl_dump_lq_cmd(struct iwl_priv *priv, | |
806 | struct iwl_link_quality_cmd *lq) | |
807 | { | |
808 | int i; | |
809 | IWL_DEBUG_RATE(priv, "lq station id 0x%x\n", lq->sta_id); | |
810 | IWL_DEBUG_RATE(priv, "lq ant 0x%X 0x%X\n", | |
811 | lq->general_params.single_stream_ant_msk, | |
812 | lq->general_params.dual_stream_ant_msk); | |
813 | ||
814 | for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) | |
815 | IWL_DEBUG_RATE(priv, "lq index %d 0x%X\n", | |
816 | i, lq->rs_table[i].rate_n_flags); | |
817 | } | |
818 | #else | |
819 | static inline void iwl_dump_lq_cmd(struct iwl_priv *priv, | |
820 | struct iwl_link_quality_cmd *lq) | |
821 | { | |
822 | } | |
823 | #endif | |
824 | ||
825 | /** | |
826 | * is_lq_table_valid() - Test one aspect of LQ cmd for validity | |
827 | * | |
828 | * It sometimes happens when a HT rate has been in use and we | |
829 | * loose connectivity with AP then mac80211 will first tell us that the | |
830 | * current channel is not HT anymore before removing the station. In such a | |
831 | * scenario the RXON flags will be updated to indicate we are not | |
832 | * communicating HT anymore, but the LQ command may still contain HT rates. | |
833 | * Test for this to prevent driver from sending LQ command between the time | |
834 | * RXON flags are updated and when LQ command is updated. | |
835 | */ | |
836 | static bool is_lq_table_valid(struct iwl_priv *priv, | |
837 | struct iwl_rxon_context *ctx, | |
838 | struct iwl_link_quality_cmd *lq) | |
839 | { | |
840 | int i; | |
841 | ||
842 | if (ctx->ht.enabled) | |
843 | return true; | |
844 | ||
845 | IWL_DEBUG_INFO(priv, "Channel %u is not an HT channel\n", | |
846 | ctx->active.channel); | |
847 | for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) { | |
848 | if (le32_to_cpu(lq->rs_table[i].rate_n_flags) & | |
849 | RATE_MCS_HT_MSK) { | |
850 | IWL_DEBUG_INFO(priv, | |
851 | "index %d of LQ expects HT channel\n", | |
852 | i); | |
853 | return false; | |
854 | } | |
855 | } | |
856 | return true; | |
857 | } | |
858 | ||
859 | /** | |
860 | * iwl_send_lq_cmd() - Send link quality command | |
861 | * @init: This command is sent as part of station initialization right | |
862 | * after station has been added. | |
863 | * | |
864 | * The link quality command is sent as the last step of station creation. | |
865 | * This is the special case in which init is set and we call a callback in | |
866 | * this case to clear the state indicating that station creation is in | |
867 | * progress. | |
868 | */ | |
869 | int iwl_send_lq_cmd(struct iwl_priv *priv, struct iwl_rxon_context *ctx, | |
870 | struct iwl_link_quality_cmd *lq, u8 flags, bool init) | |
871 | { | |
872 | int ret = 0; | |
c745f55b WYG |
873 | struct iwl_host_cmd cmd = { |
874 | .id = REPLY_TX_LINK_QUALITY_CMD, | |
875 | .len = { sizeof(struct iwl_link_quality_cmd), }, | |
876 | .flags = flags, | |
877 | .data = { lq, }, | |
878 | }; | |
879 | ||
880 | if (WARN_ON(lq->sta_id == IWL_INVALID_STATION)) | |
881 | return -EINVAL; | |
882 | ||
883 | ||
fa23cb04 | 884 | spin_lock_bh(&priv->sta_lock); |
c745f55b | 885 | if (!(priv->stations[lq->sta_id].used & IWL_STA_DRIVER_ACTIVE)) { |
fa23cb04 | 886 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
887 | return -EINVAL; |
888 | } | |
fa23cb04 | 889 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
890 | |
891 | iwl_dump_lq_cmd(priv, lq); | |
892 | if (WARN_ON(init && (cmd.flags & CMD_ASYNC))) | |
893 | return -EINVAL; | |
894 | ||
895 | if (is_lq_table_valid(priv, ctx, lq)) | |
e10a0533 | 896 | ret = iwl_dvm_send_cmd(priv, &cmd); |
c745f55b WYG |
897 | else |
898 | ret = -EINVAL; | |
899 | ||
900 | if (cmd.flags & CMD_ASYNC) | |
901 | return ret; | |
902 | ||
903 | if (init) { | |
904 | IWL_DEBUG_INFO(priv, "init LQ command complete, " | |
905 | "clearing sta addition status for sta %d\n", | |
906 | lq->sta_id); | |
fa23cb04 | 907 | spin_lock_bh(&priv->sta_lock); |
c745f55b | 908 | priv->stations[lq->sta_id].used &= ~IWL_STA_UCODE_INPROGRESS; |
fa23cb04 | 909 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
910 | } |
911 | return ret; | |
912 | } | |
913 | ||
c745f55b | 914 | |
c079166e | 915 | static struct iwl_link_quality_cmd * |
c745f55b WYG |
916 | iwl_sta_alloc_lq(struct iwl_priv *priv, struct iwl_rxon_context *ctx, |
917 | u8 sta_id) | |
c079166e JB |
918 | { |
919 | struct iwl_link_quality_cmd *link_cmd; | |
920 | ||
921 | link_cmd = kzalloc(sizeof(struct iwl_link_quality_cmd), GFP_KERNEL); | |
922 | if (!link_cmd) { | |
923 | IWL_ERR(priv, "Unable to allocate memory for LQ cmd.\n"); | |
924 | return NULL; | |
925 | } | |
926 | ||
927 | iwl_sta_fill_lq(priv, ctx, sta_id, link_cmd); | |
a30e3112 JB |
928 | |
929 | return link_cmd; | |
930 | } | |
931 | ||
932 | /* | |
933 | * iwlagn_add_bssid_station - Add the special IBSS BSSID station | |
934 | * | |
935 | * Function sleeps. | |
936 | */ | |
c745f55b WYG |
937 | int iwlagn_add_bssid_station(struct iwl_priv *priv, |
938 | struct iwl_rxon_context *ctx, | |
a30e3112 JB |
939 | const u8 *addr, u8 *sta_id_r) |
940 | { | |
941 | int ret; | |
942 | u8 sta_id; | |
943 | struct iwl_link_quality_cmd *link_cmd; | |
a30e3112 JB |
944 | |
945 | if (sta_id_r) | |
946 | *sta_id_r = IWL_INVALID_STATION; | |
947 | ||
948 | ret = iwl_add_station_common(priv, ctx, addr, 0, NULL, &sta_id); | |
949 | if (ret) { | |
950 | IWL_ERR(priv, "Unable to add station %pM\n", addr); | |
951 | return ret; | |
952 | } | |
953 | ||
954 | if (sta_id_r) | |
955 | *sta_id_r = sta_id; | |
956 | ||
fa23cb04 | 957 | spin_lock_bh(&priv->sta_lock); |
a30e3112 | 958 | priv->stations[sta_id].used |= IWL_STA_LOCAL; |
fa23cb04 | 959 | spin_unlock_bh(&priv->sta_lock); |
a30e3112 JB |
960 | |
961 | /* Set up default rate scaling table in device's station table */ | |
f775aa06 | 962 | link_cmd = iwl_sta_alloc_lq(priv, ctx, sta_id); |
a30e3112 | 963 | if (!link_cmd) { |
c745f55b WYG |
964 | IWL_ERR(priv, |
965 | "Unable to initialize rate scaling for station %pM.\n", | |
a30e3112 JB |
966 | addr); |
967 | return -ENOMEM; | |
968 | } | |
969 | ||
970 | ret = iwl_send_lq_cmd(priv, ctx, link_cmd, CMD_SYNC, true); | |
971 | if (ret) | |
972 | IWL_ERR(priv, "Link quality command failed (%d)\n", ret); | |
973 | ||
fa23cb04 | 974 | spin_lock_bh(&priv->sta_lock); |
a30e3112 | 975 | priv->stations[sta_id].lq = link_cmd; |
fa23cb04 | 976 | spin_unlock_bh(&priv->sta_lock); |
a30e3112 JB |
977 | |
978 | return 0; | |
979 | } | |
980 | ||
5a3d9882 JB |
981 | /* |
982 | * static WEP keys | |
983 | * | |
984 | * For each context, the device has a table of 4 static WEP keys | |
985 | * (one for each key index) that is updated with the following | |
986 | * commands. | |
987 | */ | |
988 | ||
a30e3112 JB |
989 | static int iwl_send_static_wepkey_cmd(struct iwl_priv *priv, |
990 | struct iwl_rxon_context *ctx, | |
991 | bool send_if_empty) | |
992 | { | |
993 | int i, not_empty = 0; | |
994 | u8 buff[sizeof(struct iwl_wep_cmd) + | |
995 | sizeof(struct iwl_wep_key) * WEP_KEYS_MAX]; | |
996 | struct iwl_wep_cmd *wep_cmd = (struct iwl_wep_cmd *)buff; | |
997 | size_t cmd_size = sizeof(struct iwl_wep_cmd); | |
998 | struct iwl_host_cmd cmd = { | |
999 | .id = ctx->wep_key_cmd, | |
3fa50738 | 1000 | .data = { wep_cmd, }, |
a30e3112 JB |
1001 | .flags = CMD_SYNC, |
1002 | }; | |
1003 | ||
1004 | might_sleep(); | |
1005 | ||
1006 | memset(wep_cmd, 0, cmd_size + | |
1007 | (sizeof(struct iwl_wep_key) * WEP_KEYS_MAX)); | |
1008 | ||
1009 | for (i = 0; i < WEP_KEYS_MAX ; i++) { | |
1010 | wep_cmd->key[i].key_index = i; | |
1011 | if (ctx->wep_keys[i].key_size) { | |
1012 | wep_cmd->key[i].key_offset = i; | |
1013 | not_empty = 1; | |
1014 | } else { | |
1015 | wep_cmd->key[i].key_offset = WEP_INVALID_OFFSET; | |
1016 | } | |
1017 | ||
1018 | wep_cmd->key[i].key_size = ctx->wep_keys[i].key_size; | |
1019 | memcpy(&wep_cmd->key[i].key[3], ctx->wep_keys[i].key, | |
1020 | ctx->wep_keys[i].key_size); | |
1021 | } | |
1022 | ||
1023 | wep_cmd->global_key_type = WEP_KEY_WEP_TYPE; | |
1024 | wep_cmd->num_keys = WEP_KEYS_MAX; | |
1025 | ||
1026 | cmd_size += sizeof(struct iwl_wep_key) * WEP_KEYS_MAX; | |
1027 | ||
3fa50738 | 1028 | cmd.len[0] = cmd_size; |
a30e3112 JB |
1029 | |
1030 | if (not_empty || send_if_empty) | |
e10a0533 | 1031 | return iwl_dvm_send_cmd(priv, &cmd); |
a30e3112 JB |
1032 | else |
1033 | return 0; | |
1034 | } | |
1035 | ||
1036 | int iwl_restore_default_wep_keys(struct iwl_priv *priv, | |
1037 | struct iwl_rxon_context *ctx) | |
1038 | { | |
b1eea297 | 1039 | lockdep_assert_held(&priv->mutex); |
a30e3112 JB |
1040 | |
1041 | return iwl_send_static_wepkey_cmd(priv, ctx, false); | |
1042 | } | |
1043 | ||
1044 | int iwl_remove_default_wep_key(struct iwl_priv *priv, | |
1045 | struct iwl_rxon_context *ctx, | |
1046 | struct ieee80211_key_conf *keyconf) | |
1047 | { | |
1048 | int ret; | |
1049 | ||
b1eea297 | 1050 | lockdep_assert_held(&priv->mutex); |
a30e3112 JB |
1051 | |
1052 | IWL_DEBUG_WEP(priv, "Removing default WEP key: idx=%d\n", | |
1053 | keyconf->keyidx); | |
1054 | ||
1055 | memset(&ctx->wep_keys[keyconf->keyidx], 0, sizeof(ctx->wep_keys[0])); | |
83626404 | 1056 | if (iwl_is_rfkill(priv)) { |
c745f55b WYG |
1057 | IWL_DEBUG_WEP(priv, |
1058 | "Not sending REPLY_WEPKEY command due to RFKILL.\n"); | |
a30e3112 JB |
1059 | /* but keys in device are clear anyway so return success */ |
1060 | return 0; | |
1061 | } | |
1062 | ret = iwl_send_static_wepkey_cmd(priv, ctx, 1); | |
1063 | IWL_DEBUG_WEP(priv, "Remove default WEP key: idx=%d ret=%d\n", | |
1064 | keyconf->keyidx, ret); | |
1065 | ||
1066 | return ret; | |
1067 | } | |
1068 | ||
1069 | int iwl_set_default_wep_key(struct iwl_priv *priv, | |
1070 | struct iwl_rxon_context *ctx, | |
1071 | struct ieee80211_key_conf *keyconf) | |
1072 | { | |
1073 | int ret; | |
1074 | ||
b1eea297 | 1075 | lockdep_assert_held(&priv->mutex); |
a30e3112 JB |
1076 | |
1077 | if (keyconf->keylen != WEP_KEY_LEN_128 && | |
1078 | keyconf->keylen != WEP_KEY_LEN_64) { | |
c745f55b WYG |
1079 | IWL_DEBUG_WEP(priv, |
1080 | "Bad WEP key length %d\n", keyconf->keylen); | |
a30e3112 JB |
1081 | return -EINVAL; |
1082 | } | |
1083 | ||
5a3d9882 | 1084 | keyconf->hw_key_idx = IWLAGN_HW_KEY_DEFAULT; |
a30e3112 JB |
1085 | |
1086 | ctx->wep_keys[keyconf->keyidx].key_size = keyconf->keylen; | |
1087 | memcpy(&ctx->wep_keys[keyconf->keyidx].key, &keyconf->key, | |
1088 | keyconf->keylen); | |
1089 | ||
1090 | ret = iwl_send_static_wepkey_cmd(priv, ctx, false); | |
1091 | IWL_DEBUG_WEP(priv, "Set default WEP key: len=%d idx=%d ret=%d\n", | |
1092 | keyconf->keylen, keyconf->keyidx, ret); | |
1093 | ||
1094 | return ret; | |
1095 | } | |
1096 | ||
5a3d9882 JB |
1097 | /* |
1098 | * dynamic (per-station) keys | |
1099 | * | |
1100 | * The dynamic keys are a little more complicated. The device has | |
1101 | * a key cache of up to STA_KEY_MAX_NUM/STA_KEY_MAX_NUM_PAN keys. | |
1102 | * These are linked to stations by a table that contains an index | |
1103 | * into the key table for each station/key index/{mcast,unicast}, | |
1104 | * i.e. it's basically an array of pointers like this: | |
1105 | * key_offset_t key_mapping[NUM_STATIONS][4][2]; | |
1106 | * (it really works differently, but you can think of it as such) | |
1107 | * | |
1108 | * The key uploading and linking happens in the same command, the | |
1109 | * add station command with STA_MODIFY_KEY_MASK. | |
1110 | */ | |
a30e3112 | 1111 | |
5a3d9882 JB |
1112 | static u8 iwlagn_key_sta_id(struct iwl_priv *priv, |
1113 | struct ieee80211_vif *vif, | |
1114 | struct ieee80211_sta *sta) | |
1115 | { | |
1116 | struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv; | |
5a3d9882 JB |
1117 | |
1118 | if (sta) | |
40e4e686 | 1119 | return iwl_sta_id(sta); |
5a3d9882 JB |
1120 | |
1121 | /* | |
1122 | * The device expects GTKs for station interfaces to be | |
1123 | * installed as GTKs for the AP station. If we have no | |
1124 | * station ID, then use the ap_sta_id in that case. | |
1125 | */ | |
40e4e686 JB |
1126 | if (vif->type == NL80211_IFTYPE_STATION && vif_priv->ctx) |
1127 | return vif_priv->ctx->ap_sta_id; | |
a30e3112 | 1128 | |
40e4e686 | 1129 | return IWL_INVALID_STATION; |
a30e3112 JB |
1130 | } |
1131 | ||
e1b1c087 JB |
1132 | static int iwlagn_send_sta_key(struct iwl_priv *priv, |
1133 | struct ieee80211_key_conf *keyconf, | |
1134 | u8 sta_id, u32 tkip_iv32, u16 *tkip_p1k, | |
1135 | u32 cmd_flags) | |
a30e3112 | 1136 | { |
5a3d9882 | 1137 | __le16 key_flags; |
a30e3112 | 1138 | struct iwl_addsta_cmd sta_cmd; |
5a3d9882 | 1139 | int i; |
e1b1c087 | 1140 | |
fa23cb04 | 1141 | spin_lock_bh(&priv->sta_lock); |
5a3d9882 | 1142 | memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(sta_cmd)); |
fa23cb04 | 1143 | spin_unlock_bh(&priv->sta_lock); |
a30e3112 | 1144 | |
5a3d9882 JB |
1145 | key_flags = cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS); |
1146 | key_flags |= STA_KEY_FLG_MAP_KEY_MSK; | |
a30e3112 | 1147 | |
5a3d9882 JB |
1148 | switch (keyconf->cipher) { |
1149 | case WLAN_CIPHER_SUITE_CCMP: | |
1150 | key_flags |= STA_KEY_FLG_CCMP; | |
1151 | memcpy(sta_cmd.key.key, keyconf->key, keyconf->keylen); | |
1152 | break; | |
1153 | case WLAN_CIPHER_SUITE_TKIP: | |
1154 | key_flags |= STA_KEY_FLG_TKIP; | |
1155 | sta_cmd.key.tkip_rx_tsc_byte2 = tkip_iv32; | |
1156 | for (i = 0; i < 5; i++) | |
1157 | sta_cmd.key.tkip_rx_ttak[i] = cpu_to_le16(tkip_p1k[i]); | |
1158 | memcpy(sta_cmd.key.key, keyconf->key, keyconf->keylen); | |
1159 | break; | |
1160 | case WLAN_CIPHER_SUITE_WEP104: | |
1161 | key_flags |= STA_KEY_FLG_KEY_SIZE_MSK; | |
1162 | /* fall through */ | |
1163 | case WLAN_CIPHER_SUITE_WEP40: | |
1164 | key_flags |= STA_KEY_FLG_WEP; | |
1165 | memcpy(&sta_cmd.key.key[3], keyconf->key, keyconf->keylen); | |
1166 | break; | |
1167 | default: | |
1168 | WARN_ON(1); | |
1169 | return -EINVAL; | |
1170 | } | |
a30e3112 | 1171 | |
5a3d9882 | 1172 | if (!(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) |
a30e3112 JB |
1173 | key_flags |= STA_KEY_MULTICAST_MSK; |
1174 | ||
5a3d9882 JB |
1175 | /* key pointer (offset) */ |
1176 | sta_cmd.key.key_offset = keyconf->hw_key_idx; | |
a30e3112 | 1177 | |
5a3d9882 JB |
1178 | sta_cmd.key.key_flags = key_flags; |
1179 | sta_cmd.mode = STA_CONTROL_MODIFY_MSK; | |
1180 | sta_cmd.sta.modify_mask = STA_MODIFY_KEY_MASK; | |
a30e3112 | 1181 | |
5a3d9882 | 1182 | return iwl_send_add_sta(priv, &sta_cmd, cmd_flags); |
a30e3112 JB |
1183 | } |
1184 | ||
1185 | void iwl_update_tkip_key(struct iwl_priv *priv, | |
5a3d9882 | 1186 | struct ieee80211_vif *vif, |
a30e3112 JB |
1187 | struct ieee80211_key_conf *keyconf, |
1188 | struct ieee80211_sta *sta, u32 iv32, u16 *phase1key) | |
1189 | { | |
5a3d9882 JB |
1190 | u8 sta_id = iwlagn_key_sta_id(priv, vif, sta); |
1191 | ||
1192 | if (sta_id == IWL_INVALID_STATION) | |
1193 | return; | |
a30e3112 JB |
1194 | |
1195 | if (iwl_scan_cancel(priv)) { | |
1196 | /* cancel scan failed, just live w/ bad key and rely | |
1197 | briefly on SW decryption */ | |
1198 | return; | |
1199 | } | |
1200 | ||
e1b1c087 JB |
1201 | iwlagn_send_sta_key(priv, keyconf, sta_id, |
1202 | iv32, phase1key, CMD_ASYNC); | |
a30e3112 JB |
1203 | } |
1204 | ||
1205 | int iwl_remove_dynamic_key(struct iwl_priv *priv, | |
1206 | struct iwl_rxon_context *ctx, | |
1207 | struct ieee80211_key_conf *keyconf, | |
5a3d9882 | 1208 | struct ieee80211_sta *sta) |
a30e3112 | 1209 | { |
a30e3112 | 1210 | struct iwl_addsta_cmd sta_cmd; |
5a3d9882 | 1211 | u8 sta_id = iwlagn_key_sta_id(priv, ctx->vif, sta); |
5dcbf480 | 1212 | __le16 key_flags; |
5a3d9882 JB |
1213 | |
1214 | /* if station isn't there, neither is the key */ | |
1215 | if (sta_id == IWL_INVALID_STATION) | |
1216 | return -ENOENT; | |
1217 | ||
fa23cb04 | 1218 | spin_lock_bh(&priv->sta_lock); |
5a3d9882 JB |
1219 | memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(sta_cmd)); |
1220 | if (!(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) | |
1221 | sta_id = IWL_INVALID_STATION; | |
fa23cb04 | 1222 | spin_unlock_bh(&priv->sta_lock); |
5a3d9882 JB |
1223 | |
1224 | if (sta_id == IWL_INVALID_STATION) | |
1225 | return 0; | |
a30e3112 | 1226 | |
b1eea297 | 1227 | lockdep_assert_held(&priv->mutex); |
a30e3112 JB |
1228 | |
1229 | ctx->key_mapping_keys--; | |
1230 | ||
a30e3112 JB |
1231 | IWL_DEBUG_WEP(priv, "Remove dynamic key: idx=%d sta=%d\n", |
1232 | keyconf->keyidx, sta_id); | |
1233 | ||
5a3d9882 JB |
1234 | if (!test_and_clear_bit(keyconf->hw_key_idx, &priv->ucode_key_table)) |
1235 | IWL_ERR(priv, "offset %d not used in uCode key table.\n", | |
1236 | keyconf->hw_key_idx); | |
a30e3112 | 1237 | |
5dcbf480 JB |
1238 | key_flags = cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS); |
1239 | key_flags |= STA_KEY_FLG_MAP_KEY_MSK | STA_KEY_FLG_NO_ENC | | |
1240 | STA_KEY_FLG_INVALID; | |
1241 | ||
1242 | if (!(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) | |
1243 | key_flags |= STA_KEY_MULTICAST_MSK; | |
1244 | ||
1245 | sta_cmd.key.key_flags = key_flags; | |
d6ee27eb | 1246 | sta_cmd.key.key_offset = keyconf->hw_key_idx; |
5a3d9882 JB |
1247 | sta_cmd.sta.modify_mask = STA_MODIFY_KEY_MASK; |
1248 | sta_cmd.mode = STA_CONTROL_MODIFY_MSK; | |
a30e3112 JB |
1249 | |
1250 | return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); | |
1251 | } | |
1252 | ||
5a3d9882 JB |
1253 | int iwl_set_dynamic_key(struct iwl_priv *priv, |
1254 | struct iwl_rxon_context *ctx, | |
1255 | struct ieee80211_key_conf *keyconf, | |
1256 | struct ieee80211_sta *sta) | |
a30e3112 | 1257 | { |
5a3d9882 JB |
1258 | struct ieee80211_key_seq seq; |
1259 | u16 p1k[5]; | |
a30e3112 | 1260 | int ret; |
5a3d9882 JB |
1261 | u8 sta_id = iwlagn_key_sta_id(priv, ctx->vif, sta); |
1262 | const u8 *addr; | |
1263 | ||
1264 | if (sta_id == IWL_INVALID_STATION) | |
1265 | return -EINVAL; | |
a30e3112 | 1266 | |
b1eea297 | 1267 | lockdep_assert_held(&priv->mutex); |
a30e3112 | 1268 | |
5a3d9882 JB |
1269 | keyconf->hw_key_idx = iwl_get_free_ucode_key_offset(priv); |
1270 | if (keyconf->hw_key_idx == WEP_INVALID_OFFSET) | |
1271 | return -ENOSPC; | |
1272 | ||
a30e3112 | 1273 | ctx->key_mapping_keys++; |
a30e3112 JB |
1274 | |
1275 | switch (keyconf->cipher) { | |
a30e3112 | 1276 | case WLAN_CIPHER_SUITE_TKIP: |
5a3d9882 JB |
1277 | if (sta) |
1278 | addr = sta->addr; | |
1279 | else /* station mode case only */ | |
1280 | addr = ctx->active.bssid_addr; | |
1281 | ||
1282 | /* pre-fill phase 1 key into device cache */ | |
1283 | ieee80211_get_key_rx_seq(keyconf, 0, &seq); | |
1284 | ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); | |
e1b1c087 JB |
1285 | ret = iwlagn_send_sta_key(priv, keyconf, sta_id, |
1286 | seq.tkip.iv32, p1k, CMD_SYNC); | |
a30e3112 | 1287 | break; |
5a3d9882 | 1288 | case WLAN_CIPHER_SUITE_CCMP: |
a30e3112 JB |
1289 | case WLAN_CIPHER_SUITE_WEP40: |
1290 | case WLAN_CIPHER_SUITE_WEP104: | |
e1b1c087 JB |
1291 | ret = iwlagn_send_sta_key(priv, keyconf, sta_id, |
1292 | 0, NULL, CMD_SYNC); | |
a30e3112 JB |
1293 | break; |
1294 | default: | |
5a3d9882 | 1295 | IWL_ERR(priv, "Unknown cipher %x\n", keyconf->cipher); |
a30e3112 JB |
1296 | ret = -EINVAL; |
1297 | } | |
1298 | ||
5a3d9882 JB |
1299 | if (ret) { |
1300 | ctx->key_mapping_keys--; | |
1301 | clear_bit(keyconf->hw_key_idx, &priv->ucode_key_table); | |
1302 | } | |
1303 | ||
1304 | IWL_DEBUG_WEP(priv, "Set dynamic key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", | |
a30e3112 | 1305 | keyconf->cipher, keyconf->keylen, keyconf->keyidx, |
5a3d9882 | 1306 | sta ? sta->addr : NULL, ret); |
a30e3112 JB |
1307 | |
1308 | return ret; | |
1309 | } | |
1310 | ||
1311 | /** | |
1312 | * iwlagn_alloc_bcast_station - add broadcast station into driver's station table. | |
1313 | * | |
1314 | * This adds the broadcast station into the driver's station table | |
1315 | * and marks it driver active, so that it will be restored to the | |
1316 | * device at the next best time. | |
1317 | */ | |
1318 | int iwlagn_alloc_bcast_station(struct iwl_priv *priv, | |
1319 | struct iwl_rxon_context *ctx) | |
1320 | { | |
1321 | struct iwl_link_quality_cmd *link_cmd; | |
a30e3112 JB |
1322 | u8 sta_id; |
1323 | ||
fa23cb04 | 1324 | spin_lock_bh(&priv->sta_lock); |
a30e3112 JB |
1325 | sta_id = iwl_prep_station(priv, ctx, iwl_bcast_addr, false, NULL); |
1326 | if (sta_id == IWL_INVALID_STATION) { | |
1327 | IWL_ERR(priv, "Unable to prepare broadcast station\n"); | |
fa23cb04 | 1328 | spin_unlock_bh(&priv->sta_lock); |
a30e3112 JB |
1329 | |
1330 | return -EINVAL; | |
1331 | } | |
1332 | ||
1333 | priv->stations[sta_id].used |= IWL_STA_DRIVER_ACTIVE; | |
1334 | priv->stations[sta_id].used |= IWL_STA_BCAST; | |
fa23cb04 | 1335 | spin_unlock_bh(&priv->sta_lock); |
a30e3112 | 1336 | |
f775aa06 | 1337 | link_cmd = iwl_sta_alloc_lq(priv, ctx, sta_id); |
a30e3112 JB |
1338 | if (!link_cmd) { |
1339 | IWL_ERR(priv, | |
1340 | "Unable to initialize rate scaling for bcast station.\n"); | |
1341 | return -ENOMEM; | |
1342 | } | |
1343 | ||
fa23cb04 | 1344 | spin_lock_bh(&priv->sta_lock); |
a30e3112 | 1345 | priv->stations[sta_id].lq = link_cmd; |
fa23cb04 | 1346 | spin_unlock_bh(&priv->sta_lock); |
a30e3112 JB |
1347 | |
1348 | return 0; | |
1349 | } | |
1350 | ||
1351 | /** | |
1352 | * iwl_update_bcast_station - update broadcast station's LQ command | |
1353 | * | |
1354 | * Only used by iwlagn. Placed here to have all bcast station management | |
1355 | * code together. | |
1356 | */ | |
f775aa06 JB |
1357 | int iwl_update_bcast_station(struct iwl_priv *priv, |
1358 | struct iwl_rxon_context *ctx) | |
a30e3112 | 1359 | { |
a30e3112 JB |
1360 | struct iwl_link_quality_cmd *link_cmd; |
1361 | u8 sta_id = ctx->bcast_sta_id; | |
1362 | ||
f775aa06 | 1363 | link_cmd = iwl_sta_alloc_lq(priv, ctx, sta_id); |
a30e3112 JB |
1364 | if (!link_cmd) { |
1365 | IWL_ERR(priv, "Unable to initialize rate scaling for bcast station.\n"); | |
1366 | return -ENOMEM; | |
1367 | } | |
1368 | ||
fa23cb04 | 1369 | spin_lock_bh(&priv->sta_lock); |
a30e3112 JB |
1370 | if (priv->stations[sta_id].lq) |
1371 | kfree(priv->stations[sta_id].lq); | |
1372 | else | |
1373 | IWL_DEBUG_INFO(priv, "Bcast station rate scaling has not been initialized yet.\n"); | |
1374 | priv->stations[sta_id].lq = link_cmd; | |
fa23cb04 | 1375 | spin_unlock_bh(&priv->sta_lock); |
a30e3112 JB |
1376 | |
1377 | return 0; | |
1378 | } | |
1379 | ||
1380 | int iwl_update_bcast_stations(struct iwl_priv *priv) | |
1381 | { | |
1382 | struct iwl_rxon_context *ctx; | |
1383 | int ret = 0; | |
1384 | ||
1385 | for_each_context(priv, ctx) { | |
1386 | ret = iwl_update_bcast_station(priv, ctx); | |
1387 | if (ret) | |
1388 | break; | |
1389 | } | |
1390 | ||
1391 | return ret; | |
1392 | } | |
1393 | ||
1394 | /** | |
1395 | * iwl_sta_tx_modify_enable_tid - Enable Tx for this TID in station table | |
1396 | */ | |
1397 | int iwl_sta_tx_modify_enable_tid(struct iwl_priv *priv, int sta_id, int tid) | |
1398 | { | |
a30e3112 JB |
1399 | struct iwl_addsta_cmd sta_cmd; |
1400 | ||
b1eea297 | 1401 | lockdep_assert_held(&priv->mutex); |
a30e3112 JB |
1402 | |
1403 | /* Remove "disable" flag, to enable Tx for this TID */ | |
fa23cb04 | 1404 | spin_lock_bh(&priv->sta_lock); |
a30e3112 JB |
1405 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_TID_DISABLE_TX; |
1406 | priv->stations[sta_id].sta.tid_disable_tx &= cpu_to_le16(~(1 << tid)); | |
1407 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
1408 | memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd)); | |
fa23cb04 | 1409 | spin_unlock_bh(&priv->sta_lock); |
a30e3112 JB |
1410 | |
1411 | return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); | |
1412 | } | |
1413 | ||
1414 | int iwl_sta_rx_agg_start(struct iwl_priv *priv, struct ieee80211_sta *sta, | |
1415 | int tid, u16 ssn) | |
1416 | { | |
a30e3112 JB |
1417 | int sta_id; |
1418 | struct iwl_addsta_cmd sta_cmd; | |
1419 | ||
b1eea297 | 1420 | lockdep_assert_held(&priv->mutex); |
a30e3112 JB |
1421 | |
1422 | sta_id = iwl_sta_id(sta); | |
1423 | if (sta_id == IWL_INVALID_STATION) | |
1424 | return -ENXIO; | |
1425 | ||
fa23cb04 | 1426 | spin_lock_bh(&priv->sta_lock); |
a30e3112 JB |
1427 | priv->stations[sta_id].sta.station_flags_msk = 0; |
1428 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_ADDBA_TID_MSK; | |
1429 | priv->stations[sta_id].sta.add_immediate_ba_tid = (u8)tid; | |
1430 | priv->stations[sta_id].sta.add_immediate_ba_ssn = cpu_to_le16(ssn); | |
1431 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
1432 | memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd)); | |
fa23cb04 | 1433 | spin_unlock_bh(&priv->sta_lock); |
a30e3112 JB |
1434 | |
1435 | return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); | |
1436 | } | |
1437 | ||
1438 | int iwl_sta_rx_agg_stop(struct iwl_priv *priv, struct ieee80211_sta *sta, | |
1439 | int tid) | |
1440 | { | |
a30e3112 JB |
1441 | int sta_id; |
1442 | struct iwl_addsta_cmd sta_cmd; | |
1443 | ||
b1eea297 | 1444 | lockdep_assert_held(&priv->mutex); |
a30e3112 JB |
1445 | |
1446 | sta_id = iwl_sta_id(sta); | |
1447 | if (sta_id == IWL_INVALID_STATION) { | |
1448 | IWL_ERR(priv, "Invalid station for AGG tid %d\n", tid); | |
1449 | return -ENXIO; | |
1450 | } | |
1451 | ||
fa23cb04 | 1452 | spin_lock_bh(&priv->sta_lock); |
a30e3112 JB |
1453 | priv->stations[sta_id].sta.station_flags_msk = 0; |
1454 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_DELBA_TID_MSK; | |
1455 | priv->stations[sta_id].sta.remove_immediate_ba_tid = (u8)tid; | |
1456 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
1457 | memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd)); | |
fa23cb04 | 1458 | spin_unlock_bh(&priv->sta_lock); |
a30e3112 JB |
1459 | |
1460 | return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); | |
1461 | } | |
1462 | ||
a30e3112 | 1463 | |
a30e3112 JB |
1464 | |
1465 | void iwl_sta_modify_sleep_tx_count(struct iwl_priv *priv, int sta_id, int cnt) | |
1466 | { | |
9451ca1a JB |
1467 | struct iwl_addsta_cmd cmd = { |
1468 | .mode = STA_CONTROL_MODIFY_MSK, | |
1469 | .station_flags = STA_FLG_PWR_SAVE_MSK, | |
1470 | .station_flags_msk = STA_FLG_PWR_SAVE_MSK, | |
1471 | .sta.sta_id = sta_id, | |
1472 | .sta.modify_mask = STA_MODIFY_SLEEP_TX_COUNT_MSK, | |
1473 | .sleep_tx_count = cpu_to_le16(cnt), | |
1474 | }; | |
a30e3112 | 1475 | |
9451ca1a | 1476 | iwl_send_add_sta(priv, &cmd, CMD_ASYNC); |
a30e3112 | 1477 | } |