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a30e3112 JB |
1 | /****************************************************************************** |
2 | * | |
fb4961db | 3 | * Copyright(c) 2003 - 2012 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 JB |
30 | #include <net/mac80211.h> |
31 | ||
32 | #include "iwl-dev.h" | |
a30e3112 | 33 | #include "iwl-agn.h" |
bdfbf092 | 34 | #include "iwl-trans.h" |
a30e3112 | 35 | |
f32cadfc MV |
36 | const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; |
37 | ||
2da424b0 | 38 | static int iwl_sta_ucode_activate(struct iwl_priv *priv, u8 sta_id) |
c745f55b | 39 | { |
fa23cb04 JB |
40 | lockdep_assert_held(&priv->sta_lock); |
41 | ||
2da424b0 WYG |
42 | if (sta_id >= IWLAGN_STATION_COUNT) { |
43 | IWL_ERR(priv, "invalid sta_id %u", sta_id); | |
44 | return -EINVAL; | |
45 | } | |
c745f55b WYG |
46 | if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) |
47 | IWL_ERR(priv, "ACTIVATE a non DRIVER active station id %u " | |
48 | "addr %pM\n", | |
49 | sta_id, priv->stations[sta_id].sta.sta.addr); | |
50 | ||
51 | if (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE) { | |
52 | IWL_DEBUG_ASSOC(priv, | |
53 | "STA id %u addr %pM already present in uCode " | |
54 | "(according to driver)\n", | |
55 | sta_id, priv->stations[sta_id].sta.sta.addr); | |
56 | } else { | |
57 | priv->stations[sta_id].used |= IWL_STA_UCODE_ACTIVE; | |
58 | IWL_DEBUG_ASSOC(priv, "Added STA id %u addr %pM to uCode\n", | |
59 | sta_id, priv->stations[sta_id].sta.sta.addr); | |
60 | } | |
2da424b0 | 61 | return 0; |
c745f55b WYG |
62 | } |
63 | ||
64 | static int iwl_process_add_sta_resp(struct iwl_priv *priv, | |
65 | struct iwl_addsta_cmd *addsta, | |
66 | struct iwl_rx_packet *pkt) | |
67 | { | |
f8d7c1a1 | 68 | struct iwl_add_sta_resp *add_sta_resp = (void *)pkt->data; |
c745f55b | 69 | u8 sta_id = addsta->sta.sta_id; |
c745f55b WYG |
70 | int ret = -EIO; |
71 | ||
72 | if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) { | |
73 | IWL_ERR(priv, "Bad return from REPLY_ADD_STA (0x%08X)\n", | |
74 | pkt->hdr.flags); | |
75 | return ret; | |
76 | } | |
77 | ||
78 | IWL_DEBUG_INFO(priv, "Processing response for adding station %u\n", | |
79 | sta_id); | |
80 | ||
fa23cb04 | 81 | spin_lock(&priv->sta_lock); |
c745f55b | 82 | |
f8d7c1a1 | 83 | switch (add_sta_resp->status) { |
c745f55b WYG |
84 | case ADD_STA_SUCCESS_MSK: |
85 | IWL_DEBUG_INFO(priv, "REPLY_ADD_STA PASSED\n"); | |
2da424b0 | 86 | ret = iwl_sta_ucode_activate(priv, sta_id); |
c745f55b WYG |
87 | break; |
88 | case ADD_STA_NO_ROOM_IN_TABLE: | |
89 | IWL_ERR(priv, "Adding station %d failed, no room in table.\n", | |
90 | sta_id); | |
91 | break; | |
92 | case ADD_STA_NO_BLOCK_ACK_RESOURCE: | |
93 | IWL_ERR(priv, "Adding station %d failed, no block ack " | |
94 | "resource.\n", sta_id); | |
95 | break; | |
96 | case ADD_STA_MODIFY_NON_EXIST_STA: | |
97 | IWL_ERR(priv, "Attempting to modify non-existing station %d\n", | |
98 | sta_id); | |
99 | break; | |
100 | default: | |
101 | IWL_DEBUG_ASSOC(priv, "Received REPLY_ADD_STA:(0x%08X)\n", | |
f8d7c1a1 | 102 | add_sta_resp->status); |
c745f55b WYG |
103 | break; |
104 | } | |
105 | ||
106 | IWL_DEBUG_INFO(priv, "%s station id %u addr %pM\n", | |
107 | priv->stations[sta_id].sta.mode == | |
108 | STA_CONTROL_MODIFY_MSK ? "Modified" : "Added", | |
109 | sta_id, priv->stations[sta_id].sta.sta.addr); | |
110 | ||
111 | /* | |
112 | * XXX: The MAC address in the command buffer is often changed from | |
113 | * the original sent to the device. That is, the MAC address | |
114 | * written to the command buffer often is not the same MAC address | |
115 | * read from the command buffer when the command returns. This | |
116 | * issue has not yet been resolved and this debugging is left to | |
117 | * observe the problem. | |
118 | */ | |
119 | IWL_DEBUG_INFO(priv, "%s station according to cmd buffer %pM\n", | |
120 | priv->stations[sta_id].sta.mode == | |
121 | STA_CONTROL_MODIFY_MSK ? "Modified" : "Added", | |
122 | addsta->sta.addr); | |
fa23cb04 | 123 | spin_unlock(&priv->sta_lock); |
c745f55b WYG |
124 | |
125 | return ret; | |
126 | } | |
127 | ||
48a2d66f | 128 | int iwl_add_sta_callback(struct iwl_priv *priv, struct iwl_rx_cmd_buffer *rxb, |
c745f55b WYG |
129 | struct iwl_device_cmd *cmd) |
130 | { | |
131 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
132 | struct iwl_addsta_cmd *addsta = | |
133 | (struct iwl_addsta_cmd *) cmd->payload; | |
134 | ||
135 | return iwl_process_add_sta_resp(priv, addsta, pkt); | |
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)) { | |
154 | cmd.flags |= CMD_WANT_SKB; | |
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 | static bool iwl_is_channel_extension(struct iwl_priv *priv, |
175 | enum ieee80211_band band, | |
176 | u16 channel, u8 extension_chan_offset) | |
177 | { | |
178 | const struct iwl_channel_info *ch_info; | |
179 | ||
180 | ch_info = iwl_get_channel_info(priv, band, channel); | |
181 | if (!is_channel_valid(ch_info)) | |
182 | return false; | |
183 | ||
184 | if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE) | |
185 | return !(ch_info->ht40_extension_channel & | |
186 | IEEE80211_CHAN_NO_HT40PLUS); | |
187 | else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW) | |
188 | return !(ch_info->ht40_extension_channel & | |
189 | IEEE80211_CHAN_NO_HT40MINUS); | |
190 | ||
191 | return false; | |
192 | } | |
193 | ||
194 | bool iwl_is_ht40_tx_allowed(struct iwl_priv *priv, | |
195 | struct iwl_rxon_context *ctx, | |
196 | struct ieee80211_sta_ht_cap *ht_cap) | |
197 | { | |
198 | if (!ctx->ht.enabled || !ctx->ht.is_40mhz) | |
199 | return false; | |
200 | ||
201 | /* | |
202 | * We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40 | |
203 | * the bit will not set if it is pure 40MHz case | |
204 | */ | |
205 | if (ht_cap && !ht_cap->ht_supported) | |
206 | return false; | |
207 | ||
208 | #ifdef CONFIG_IWLWIFI_DEBUGFS | |
209 | if (priv->disable_ht40) | |
210 | return false; | |
211 | #endif | |
212 | ||
213 | return iwl_is_channel_extension(priv, priv->band, | |
214 | le16_to_cpu(ctx->staging.channel), | |
215 | ctx->ht.extension_chan_offset); | |
216 | } | |
217 | ||
ab0bd5b3 JB |
218 | static void iwl_sta_calc_ht_flags(struct iwl_priv *priv, |
219 | struct ieee80211_sta *sta, | |
220 | struct iwl_rxon_context *ctx, | |
221 | __le32 *flags, __le32 *mask) | |
c745f55b WYG |
222 | { |
223 | struct ieee80211_sta_ht_cap *sta_ht_inf = &sta->ht_cap; | |
c745f55b WYG |
224 | u8 mimo_ps_mode; |
225 | ||
ab0bd5b3 JB |
226 | *mask = STA_FLG_RTS_MIMO_PROT_MSK | |
227 | STA_FLG_MIMO_DIS_MSK | | |
228 | STA_FLG_HT40_EN_MSK | | |
229 | STA_FLG_MAX_AGG_SIZE_MSK | | |
230 | STA_FLG_AGG_MPDU_DENSITY_MSK; | |
231 | *flags = 0; | |
232 | ||
c745f55b | 233 | if (!sta || !sta_ht_inf->ht_supported) |
ab0bd5b3 | 234 | return; |
c745f55b WYG |
235 | |
236 | mimo_ps_mode = (sta_ht_inf->cap & IEEE80211_HT_CAP_SM_PS) >> 2; | |
ab0bd5b3 JB |
237 | |
238 | IWL_DEBUG_INFO(priv, "STA %pM SM PS mode: %s\n", | |
c745f55b WYG |
239 | (mimo_ps_mode == WLAN_HT_CAP_SM_PS_STATIC) ? |
240 | "static" : | |
241 | (mimo_ps_mode == WLAN_HT_CAP_SM_PS_DYNAMIC) ? | |
242 | "dynamic" : "disabled"); | |
243 | ||
c745f55b WYG |
244 | switch (mimo_ps_mode) { |
245 | case WLAN_HT_CAP_SM_PS_STATIC: | |
ab0bd5b3 | 246 | *flags |= STA_FLG_MIMO_DIS_MSK; |
c745f55b WYG |
247 | break; |
248 | case WLAN_HT_CAP_SM_PS_DYNAMIC: | |
ab0bd5b3 | 249 | *flags |= STA_FLG_RTS_MIMO_PROT_MSK; |
c745f55b WYG |
250 | break; |
251 | case WLAN_HT_CAP_SM_PS_DISABLED: | |
252 | break; | |
253 | default: | |
254 | IWL_WARN(priv, "Invalid MIMO PS mode %d\n", mimo_ps_mode); | |
255 | break; | |
256 | } | |
257 | ||
ab0bd5b3 JB |
258 | *flags |= cpu_to_le32( |
259 | (u32)sta_ht_inf->ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS); | |
c745f55b | 260 | |
ab0bd5b3 JB |
261 | *flags |= cpu_to_le32( |
262 | (u32)sta_ht_inf->ampdu_density << STA_FLG_AGG_MPDU_DENSITY_POS); | |
c745f55b WYG |
263 | |
264 | if (iwl_is_ht40_tx_allowed(priv, ctx, &sta->ht_cap)) | |
ab0bd5b3 JB |
265 | *flags |= STA_FLG_HT40_EN_MSK; |
266 | } | |
267 | ||
268 | int iwl_sta_update_ht(struct iwl_priv *priv, struct iwl_rxon_context *ctx, | |
269 | struct ieee80211_sta *sta) | |
270 | { | |
271 | u8 sta_id = iwl_sta_id(sta); | |
272 | __le32 flags, mask; | |
273 | struct iwl_addsta_cmd cmd; | |
274 | ||
275 | if (WARN_ON_ONCE(sta_id == IWL_INVALID_STATION)) | |
276 | return -EINVAL; | |
c745f55b | 277 | |
ab0bd5b3 JB |
278 | iwl_sta_calc_ht_flags(priv, sta, ctx, &flags, &mask); |
279 | ||
280 | spin_lock_bh(&priv->sta_lock); | |
281 | priv->stations[sta_id].sta.station_flags &= ~mask; | |
282 | priv->stations[sta_id].sta.station_flags |= flags; | |
283 | spin_unlock_bh(&priv->sta_lock); | |
284 | ||
285 | memset(&cmd, 0, sizeof(cmd)); | |
286 | cmd.mode = STA_CONTROL_MODIFY_MSK; | |
287 | cmd.station_flags_msk = mask; | |
288 | cmd.station_flags = flags; | |
289 | cmd.sta.sta_id = sta_id; | |
290 | ||
291 | return iwl_send_add_sta(priv, &cmd, CMD_SYNC); | |
292 | } | |
293 | ||
294 | static void iwl_set_ht_add_station(struct iwl_priv *priv, u8 index, | |
295 | struct ieee80211_sta *sta, | |
296 | struct iwl_rxon_context *ctx) | |
297 | { | |
298 | __le32 flags, mask; | |
299 | ||
300 | iwl_sta_calc_ht_flags(priv, sta, ctx, &flags, &mask); | |
301 | ||
302 | lockdep_assert_held(&priv->sta_lock); | |
303 | priv->stations[index].sta.station_flags &= ~mask; | |
304 | priv->stations[index].sta.station_flags |= flags; | |
c745f55b WYG |
305 | } |
306 | ||
307 | /** | |
308 | * iwl_prep_station - Prepare station information for addition | |
309 | * | |
310 | * should be called with sta_lock held | |
311 | */ | |
312 | u8 iwl_prep_station(struct iwl_priv *priv, struct iwl_rxon_context *ctx, | |
313 | const u8 *addr, bool is_ap, struct ieee80211_sta *sta) | |
314 | { | |
315 | struct iwl_station_entry *station; | |
316 | int i; | |
317 | u8 sta_id = IWL_INVALID_STATION; | |
318 | ||
319 | if (is_ap) | |
320 | sta_id = ctx->ap_sta_id; | |
321 | else if (is_broadcast_ether_addr(addr)) | |
322 | sta_id = ctx->bcast_sta_id; | |
323 | else | |
324 | for (i = IWL_STA_ID; i < IWLAGN_STATION_COUNT; i++) { | |
2e42e474 JP |
325 | if (ether_addr_equal(priv->stations[i].sta.sta.addr, |
326 | addr)) { | |
c745f55b WYG |
327 | sta_id = i; |
328 | break; | |
329 | } | |
330 | ||
331 | if (!priv->stations[i].used && | |
332 | sta_id == IWL_INVALID_STATION) | |
333 | sta_id = i; | |
334 | } | |
335 | ||
336 | /* | |
337 | * These two conditions have the same outcome, but keep them | |
338 | * separate | |
339 | */ | |
340 | if (unlikely(sta_id == IWL_INVALID_STATION)) | |
341 | return sta_id; | |
342 | ||
343 | /* | |
344 | * uCode is not able to deal with multiple requests to add a | |
345 | * station. Keep track if one is in progress so that we do not send | |
346 | * another. | |
347 | */ | |
348 | if (priv->stations[sta_id].used & IWL_STA_UCODE_INPROGRESS) { | |
349 | IWL_DEBUG_INFO(priv, "STA %d already in process of being " | |
350 | "added.\n", sta_id); | |
351 | return sta_id; | |
352 | } | |
353 | ||
354 | if ((priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE) && | |
355 | (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE) && | |
2e42e474 | 356 | ether_addr_equal(priv->stations[sta_id].sta.sta.addr, addr)) { |
c745f55b WYG |
357 | IWL_DEBUG_ASSOC(priv, "STA %d (%pM) already added, not " |
358 | "adding again.\n", sta_id, addr); | |
359 | return sta_id; | |
360 | } | |
361 | ||
362 | station = &priv->stations[sta_id]; | |
363 | station->used = IWL_STA_DRIVER_ACTIVE; | |
364 | IWL_DEBUG_ASSOC(priv, "Add STA to driver ID %d: %pM\n", | |
365 | sta_id, addr); | |
366 | priv->num_stations++; | |
367 | ||
368 | /* Set up the REPLY_ADD_STA command to send to device */ | |
369 | memset(&station->sta, 0, sizeof(struct iwl_addsta_cmd)); | |
370 | memcpy(station->sta.sta.addr, addr, ETH_ALEN); | |
371 | station->sta.mode = 0; | |
372 | station->sta.sta.sta_id = sta_id; | |
373 | station->sta.station_flags = ctx->station_flags; | |
374 | station->ctxid = ctx->ctxid; | |
375 | ||
376 | if (sta) { | |
377 | struct iwl_station_priv *sta_priv; | |
378 | ||
379 | sta_priv = (void *)sta->drv_priv; | |
380 | sta_priv->ctx = ctx; | |
381 | } | |
382 | ||
383 | /* | |
384 | * OK to call unconditionally, since local stations (IBSS BSSID | |
385 | * STA and broadcast STA) pass in a NULL sta, and mac80211 | |
386 | * doesn't allow HT IBSS. | |
387 | */ | |
388 | iwl_set_ht_add_station(priv, sta_id, sta, ctx); | |
389 | ||
390 | return sta_id; | |
391 | ||
392 | } | |
393 | ||
394 | #define STA_WAIT_TIMEOUT (HZ/2) | |
395 | ||
396 | /** | |
397 | * iwl_add_station_common - | |
398 | */ | |
399 | int iwl_add_station_common(struct iwl_priv *priv, struct iwl_rxon_context *ctx, | |
400 | const u8 *addr, bool is_ap, | |
401 | struct ieee80211_sta *sta, u8 *sta_id_r) | |
402 | { | |
c745f55b WYG |
403 | int ret = 0; |
404 | u8 sta_id; | |
405 | struct iwl_addsta_cmd sta_cmd; | |
406 | ||
407 | *sta_id_r = 0; | |
fa23cb04 | 408 | spin_lock_bh(&priv->sta_lock); |
c745f55b WYG |
409 | sta_id = iwl_prep_station(priv, ctx, addr, is_ap, sta); |
410 | if (sta_id == IWL_INVALID_STATION) { | |
411 | IWL_ERR(priv, "Unable to prepare station %pM for addition\n", | |
412 | addr); | |
fa23cb04 | 413 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
414 | return -EINVAL; |
415 | } | |
416 | ||
417 | /* | |
418 | * uCode is not able to deal with multiple requests to add a | |
419 | * station. Keep track if one is in progress so that we do not send | |
420 | * another. | |
421 | */ | |
422 | if (priv->stations[sta_id].used & IWL_STA_UCODE_INPROGRESS) { | |
423 | IWL_DEBUG_INFO(priv, "STA %d already in process of being " | |
424 | "added.\n", sta_id); | |
fa23cb04 | 425 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
426 | return -EEXIST; |
427 | } | |
428 | ||
429 | if ((priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE) && | |
430 | (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) { | |
431 | IWL_DEBUG_ASSOC(priv, "STA %d (%pM) already added, not " | |
432 | "adding again.\n", sta_id, addr); | |
fa23cb04 | 433 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
434 | return -EEXIST; |
435 | } | |
436 | ||
437 | priv->stations[sta_id].used |= IWL_STA_UCODE_INPROGRESS; | |
438 | memcpy(&sta_cmd, &priv->stations[sta_id].sta, | |
439 | sizeof(struct iwl_addsta_cmd)); | |
fa23cb04 | 440 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
441 | |
442 | /* Add station to device's station table */ | |
443 | ret = iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); | |
444 | if (ret) { | |
fa23cb04 | 445 | spin_lock_bh(&priv->sta_lock); |
c745f55b WYG |
446 | IWL_ERR(priv, "Adding station %pM failed.\n", |
447 | priv->stations[sta_id].sta.sta.addr); | |
448 | priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE; | |
449 | priv->stations[sta_id].used &= ~IWL_STA_UCODE_INPROGRESS; | |
fa23cb04 | 450 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
451 | } |
452 | *sta_id_r = sta_id; | |
453 | return ret; | |
454 | } | |
455 | ||
456 | /** | |
457 | * iwl_sta_ucode_deactivate - deactivate ucode status for a station | |
c745f55b WYG |
458 | */ |
459 | static void iwl_sta_ucode_deactivate(struct iwl_priv *priv, u8 sta_id) | |
460 | { | |
fa23cb04 JB |
461 | lockdep_assert_held(&priv->sta_lock); |
462 | ||
c745f55b WYG |
463 | /* Ucode must be active and driver must be non active */ |
464 | if ((priv->stations[sta_id].used & | |
465 | (IWL_STA_UCODE_ACTIVE | IWL_STA_DRIVER_ACTIVE)) != | |
466 | IWL_STA_UCODE_ACTIVE) | |
467 | IWL_ERR(priv, "removed non active STA %u\n", sta_id); | |
468 | ||
469 | priv->stations[sta_id].used &= ~IWL_STA_UCODE_ACTIVE; | |
470 | ||
471 | memset(&priv->stations[sta_id], 0, sizeof(struct iwl_station_entry)); | |
472 | IWL_DEBUG_ASSOC(priv, "Removed STA %u\n", sta_id); | |
473 | } | |
474 | ||
475 | static int iwl_send_remove_station(struct iwl_priv *priv, | |
476 | const u8 *addr, int sta_id, | |
477 | bool temporary) | |
478 | { | |
479 | struct iwl_rx_packet *pkt; | |
480 | int ret; | |
c745f55b WYG |
481 | struct iwl_rem_sta_cmd rm_sta_cmd; |
482 | ||
483 | struct iwl_host_cmd cmd = { | |
484 | .id = REPLY_REMOVE_STA, | |
485 | .len = { sizeof(struct iwl_rem_sta_cmd), }, | |
486 | .flags = CMD_SYNC, | |
487 | .data = { &rm_sta_cmd, }, | |
488 | }; | |
489 | ||
490 | memset(&rm_sta_cmd, 0, sizeof(rm_sta_cmd)); | |
491 | rm_sta_cmd.num_sta = 1; | |
492 | memcpy(&rm_sta_cmd.addr, addr, ETH_ALEN); | |
493 | ||
494 | cmd.flags |= CMD_WANT_SKB; | |
495 | ||
e10a0533 | 496 | ret = iwl_dvm_send_cmd(priv, &cmd); |
c745f55b WYG |
497 | |
498 | if (ret) | |
499 | return ret; | |
500 | ||
65b94a4a | 501 | pkt = cmd.resp_pkt; |
c745f55b WYG |
502 | if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) { |
503 | IWL_ERR(priv, "Bad return from REPLY_REMOVE_STA (0x%08X)\n", | |
504 | pkt->hdr.flags); | |
505 | ret = -EIO; | |
506 | } | |
507 | ||
508 | if (!ret) { | |
f8d7c1a1 JB |
509 | struct iwl_rem_sta_resp *rem_sta_resp = (void *)pkt->data; |
510 | switch (rem_sta_resp->status) { | |
c745f55b WYG |
511 | case REM_STA_SUCCESS_MSK: |
512 | if (!temporary) { | |
fa23cb04 | 513 | spin_lock_bh(&priv->sta_lock); |
c745f55b | 514 | iwl_sta_ucode_deactivate(priv, sta_id); |
fa23cb04 | 515 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
516 | } |
517 | IWL_DEBUG_ASSOC(priv, "REPLY_REMOVE_STA PASSED\n"); | |
518 | break; | |
519 | default: | |
520 | ret = -EIO; | |
521 | IWL_ERR(priv, "REPLY_REMOVE_STA failed\n"); | |
522 | break; | |
523 | } | |
524 | } | |
65b94a4a | 525 | iwl_free_resp(&cmd); |
c745f55b WYG |
526 | |
527 | return ret; | |
528 | } | |
529 | ||
530 | /** | |
531 | * iwl_remove_station - Remove driver's knowledge of station. | |
532 | */ | |
533 | int iwl_remove_station(struct iwl_priv *priv, const u8 sta_id, | |
534 | const u8 *addr) | |
535 | { | |
855c2ee8 | 536 | u8 tid; |
c745f55b | 537 | |
83626404 | 538 | if (!iwl_is_ready(priv)) { |
c745f55b WYG |
539 | IWL_DEBUG_INFO(priv, |
540 | "Unable to remove station %pM, device not ready.\n", | |
541 | addr); | |
542 | /* | |
543 | * It is typical for stations to be removed when we are | |
544 | * going down. Return success since device will be down | |
545 | * soon anyway | |
546 | */ | |
547 | return 0; | |
548 | } | |
549 | ||
550 | IWL_DEBUG_ASSOC(priv, "Removing STA from driver:%d %pM\n", | |
551 | sta_id, addr); | |
552 | ||
553 | if (WARN_ON(sta_id == IWL_INVALID_STATION)) | |
554 | return -EINVAL; | |
555 | ||
fa23cb04 | 556 | spin_lock_bh(&priv->sta_lock); |
c745f55b WYG |
557 | |
558 | if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) { | |
559 | IWL_DEBUG_INFO(priv, "Removing %pM but non DRIVER active\n", | |
560 | addr); | |
561 | goto out_err; | |
562 | } | |
563 | ||
564 | if (!(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) { | |
565 | IWL_DEBUG_INFO(priv, "Removing %pM but non UCODE active\n", | |
566 | addr); | |
567 | goto out_err; | |
568 | } | |
569 | ||
570 | if (priv->stations[sta_id].used & IWL_STA_LOCAL) { | |
571 | kfree(priv->stations[sta_id].lq); | |
572 | priv->stations[sta_id].lq = NULL; | |
573 | } | |
574 | ||
855c2ee8 EG |
575 | for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) |
576 | memset(&priv->tid_data[sta_id][tid], 0, | |
577 | sizeof(priv->tid_data[sta_id][tid])); | |
578 | ||
c745f55b WYG |
579 | priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE; |
580 | ||
581 | priv->num_stations--; | |
582 | ||
583 | if (WARN_ON(priv->num_stations < 0)) | |
584 | priv->num_stations = 0; | |
585 | ||
fa23cb04 | 586 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
587 | |
588 | return iwl_send_remove_station(priv, addr, sta_id, false); | |
589 | out_err: | |
fa23cb04 | 590 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
591 | return -EINVAL; |
592 | } | |
593 | ||
97420515 JB |
594 | void iwl_deactivate_station(struct iwl_priv *priv, const u8 sta_id, |
595 | const u8 *addr) | |
596 | { | |
597 | u8 tid; | |
598 | ||
599 | if (!iwl_is_ready(priv)) { | |
600 | IWL_DEBUG_INFO(priv, | |
601 | "Unable to remove station %pM, device not ready.\n", | |
602 | addr); | |
603 | return; | |
604 | } | |
605 | ||
606 | IWL_DEBUG_ASSOC(priv, "Deactivating STA: %pM (%d)\n", addr, sta_id); | |
607 | ||
608 | if (WARN_ON_ONCE(sta_id == IWL_INVALID_STATION)) | |
609 | return; | |
610 | ||
611 | spin_lock_bh(&priv->sta_lock); | |
612 | ||
613 | WARN_ON_ONCE(!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)); | |
614 | ||
615 | for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) | |
616 | memset(&priv->tid_data[sta_id][tid], 0, | |
617 | sizeof(priv->tid_data[sta_id][tid])); | |
618 | ||
619 | priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE; | |
620 | ||
621 | priv->num_stations--; | |
622 | ||
623 | if (WARN_ON_ONCE(priv->num_stations < 0)) | |
624 | priv->num_stations = 0; | |
625 | ||
626 | spin_unlock_bh(&priv->sta_lock); | |
627 | } | |
628 | ||
4dcba6d3 JB |
629 | static void iwl_sta_fill_lq(struct iwl_priv *priv, struct iwl_rxon_context *ctx, |
630 | u8 sta_id, struct iwl_link_quality_cmd *link_cmd) | |
631 | { | |
632 | int i, r; | |
633 | u32 rate_flags = 0; | |
634 | __le32 rate_n_flags; | |
635 | ||
636 | lockdep_assert_held(&priv->mutex); | |
637 | ||
638 | memset(link_cmd, 0, sizeof(*link_cmd)); | |
639 | ||
640 | /* Set up the rate scaling to start at selected rate, fall back | |
641 | * all the way down to 1M in IEEE order, and then spin on 1M */ | |
642 | if (priv->band == IEEE80211_BAND_5GHZ) | |
643 | r = IWL_RATE_6M_INDEX; | |
644 | else if (ctx && ctx->vif && ctx->vif->p2p) | |
645 | r = IWL_RATE_6M_INDEX; | |
646 | else | |
647 | r = IWL_RATE_1M_INDEX; | |
648 | ||
649 | if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE) | |
650 | rate_flags |= RATE_MCS_CCK_MSK; | |
651 | ||
652 | rate_flags |= first_antenna(priv->hw_params.valid_tx_ant) << | |
653 | RATE_MCS_ANT_POS; | |
654 | rate_n_flags = iwl_hw_set_rate_n_flags(iwl_rates[r].plcp, rate_flags); | |
655 | for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) | |
656 | link_cmd->rs_table[i].rate_n_flags = rate_n_flags; | |
657 | ||
658 | link_cmd->general_params.single_stream_ant_msk = | |
659 | first_antenna(priv->hw_params.valid_tx_ant); | |
660 | ||
661 | link_cmd->general_params.dual_stream_ant_msk = | |
662 | priv->hw_params.valid_tx_ant & | |
663 | ~first_antenna(priv->hw_params.valid_tx_ant); | |
664 | if (!link_cmd->general_params.dual_stream_ant_msk) { | |
665 | link_cmd->general_params.dual_stream_ant_msk = ANT_AB; | |
666 | } else if (num_of_ant(priv->hw_params.valid_tx_ant) == 2) { | |
667 | link_cmd->general_params.dual_stream_ant_msk = | |
668 | priv->hw_params.valid_tx_ant; | |
669 | } | |
670 | ||
671 | link_cmd->agg_params.agg_dis_start_th = | |
672 | LINK_QUAL_AGG_DISABLE_START_DEF; | |
673 | link_cmd->agg_params.agg_time_limit = | |
674 | cpu_to_le16(LINK_QUAL_AGG_TIME_LIMIT_DEF); | |
675 | ||
676 | link_cmd->sta_id = sta_id; | |
677 | } | |
678 | ||
c745f55b WYG |
679 | /** |
680 | * iwl_clear_ucode_stations - clear ucode station table bits | |
681 | * | |
682 | * This function clears all the bits in the driver indicating | |
683 | * which stations are active in the ucode. Call when something | |
684 | * other than explicit station management would cause this in | |
685 | * the ucode, e.g. unassociated RXON. | |
686 | */ | |
687 | void iwl_clear_ucode_stations(struct iwl_priv *priv, | |
688 | struct iwl_rxon_context *ctx) | |
689 | { | |
690 | int i; | |
c745f55b WYG |
691 | bool cleared = false; |
692 | ||
693 | IWL_DEBUG_INFO(priv, "Clearing ucode stations in driver\n"); | |
694 | ||
fa23cb04 | 695 | spin_lock_bh(&priv->sta_lock); |
c745f55b WYG |
696 | for (i = 0; i < IWLAGN_STATION_COUNT; i++) { |
697 | if (ctx && ctx->ctxid != priv->stations[i].ctxid) | |
698 | continue; | |
699 | ||
700 | if (priv->stations[i].used & IWL_STA_UCODE_ACTIVE) { | |
701 | IWL_DEBUG_INFO(priv, | |
702 | "Clearing ucode active for station %d\n", i); | |
703 | priv->stations[i].used &= ~IWL_STA_UCODE_ACTIVE; | |
704 | cleared = true; | |
705 | } | |
706 | } | |
fa23cb04 | 707 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
708 | |
709 | if (!cleared) | |
710 | IWL_DEBUG_INFO(priv, | |
711 | "No active stations found to be cleared\n"); | |
712 | } | |
713 | ||
714 | /** | |
715 | * iwl_restore_stations() - Restore driver known stations to device | |
716 | * | |
717 | * All stations considered active by driver, but not present in ucode, is | |
718 | * restored. | |
719 | * | |
720 | * Function sleeps. | |
721 | */ | |
722 | void iwl_restore_stations(struct iwl_priv *priv, struct iwl_rxon_context *ctx) | |
723 | { | |
724 | struct iwl_addsta_cmd sta_cmd; | |
725 | struct iwl_link_quality_cmd lq; | |
c745f55b WYG |
726 | int i; |
727 | bool found = false; | |
728 | int ret; | |
729 | bool send_lq; | |
730 | ||
83626404 | 731 | if (!iwl_is_ready(priv)) { |
c745f55b WYG |
732 | IWL_DEBUG_INFO(priv, |
733 | "Not ready yet, not restoring any stations.\n"); | |
734 | return; | |
735 | } | |
736 | ||
737 | IWL_DEBUG_ASSOC(priv, "Restoring all known stations ... start.\n"); | |
fa23cb04 | 738 | spin_lock_bh(&priv->sta_lock); |
c745f55b WYG |
739 | for (i = 0; i < IWLAGN_STATION_COUNT; i++) { |
740 | if (ctx->ctxid != priv->stations[i].ctxid) | |
741 | continue; | |
742 | if ((priv->stations[i].used & IWL_STA_DRIVER_ACTIVE) && | |
743 | !(priv->stations[i].used & IWL_STA_UCODE_ACTIVE)) { | |
744 | IWL_DEBUG_ASSOC(priv, "Restoring sta %pM\n", | |
745 | priv->stations[i].sta.sta.addr); | |
746 | priv->stations[i].sta.mode = 0; | |
747 | priv->stations[i].used |= IWL_STA_UCODE_INPROGRESS; | |
748 | found = true; | |
749 | } | |
750 | } | |
751 | ||
752 | for (i = 0; i < IWLAGN_STATION_COUNT; i++) { | |
753 | if ((priv->stations[i].used & IWL_STA_UCODE_INPROGRESS)) { | |
754 | memcpy(&sta_cmd, &priv->stations[i].sta, | |
755 | sizeof(struct iwl_addsta_cmd)); | |
756 | send_lq = false; | |
757 | if (priv->stations[i].lq) { | |
15b86bff | 758 | if (priv->wowlan) |
c745f55b WYG |
759 | iwl_sta_fill_lq(priv, ctx, i, &lq); |
760 | else | |
761 | memcpy(&lq, priv->stations[i].lq, | |
762 | sizeof(struct iwl_link_quality_cmd)); | |
763 | send_lq = true; | |
764 | } | |
fa23cb04 | 765 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
766 | ret = iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); |
767 | if (ret) { | |
fa23cb04 | 768 | spin_lock_bh(&priv->sta_lock); |
c745f55b WYG |
769 | IWL_ERR(priv, "Adding station %pM failed.\n", |
770 | priv->stations[i].sta.sta.addr); | |
771 | priv->stations[i].used &= | |
772 | ~IWL_STA_DRIVER_ACTIVE; | |
773 | priv->stations[i].used &= | |
774 | ~IWL_STA_UCODE_INPROGRESS; | |
f4c37176 | 775 | continue; |
c745f55b WYG |
776 | } |
777 | /* | |
778 | * Rate scaling has already been initialized, send | |
779 | * current LQ command | |
780 | */ | |
781 | if (send_lq) | |
782 | iwl_send_lq_cmd(priv, ctx, &lq, | |
783 | CMD_SYNC, true); | |
fa23cb04 | 784 | spin_lock_bh(&priv->sta_lock); |
c745f55b WYG |
785 | priv->stations[i].used &= ~IWL_STA_UCODE_INPROGRESS; |
786 | } | |
787 | } | |
788 | ||
fa23cb04 | 789 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
790 | if (!found) |
791 | IWL_DEBUG_INFO(priv, "Restoring all known stations .... " | |
792 | "no stations to be restored.\n"); | |
793 | else | |
794 | IWL_DEBUG_INFO(priv, "Restoring all known stations .... " | |
795 | "complete.\n"); | |
796 | } | |
797 | ||
c745f55b WYG |
798 | int iwl_get_free_ucode_key_offset(struct iwl_priv *priv) |
799 | { | |
800 | int i; | |
801 | ||
802 | for (i = 0; i < priv->sta_key_max_num; i++) | |
803 | if (!test_and_set_bit(i, &priv->ucode_key_table)) | |
804 | return i; | |
805 | ||
806 | return WEP_INVALID_OFFSET; | |
807 | } | |
808 | ||
809 | void iwl_dealloc_bcast_stations(struct iwl_priv *priv) | |
810 | { | |
c745f55b WYG |
811 | int i; |
812 | ||
fa23cb04 | 813 | spin_lock_bh(&priv->sta_lock); |
c745f55b WYG |
814 | for (i = 0; i < IWLAGN_STATION_COUNT; i++) { |
815 | if (!(priv->stations[i].used & IWL_STA_BCAST)) | |
816 | continue; | |
817 | ||
818 | priv->stations[i].used &= ~IWL_STA_UCODE_ACTIVE; | |
819 | priv->num_stations--; | |
820 | if (WARN_ON(priv->num_stations < 0)) | |
821 | priv->num_stations = 0; | |
822 | kfree(priv->stations[i].lq); | |
823 | priv->stations[i].lq = NULL; | |
824 | } | |
fa23cb04 | 825 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
826 | } |
827 | ||
828 | #ifdef CONFIG_IWLWIFI_DEBUG | |
829 | static void iwl_dump_lq_cmd(struct iwl_priv *priv, | |
830 | struct iwl_link_quality_cmd *lq) | |
831 | { | |
832 | int i; | |
833 | IWL_DEBUG_RATE(priv, "lq station id 0x%x\n", lq->sta_id); | |
834 | IWL_DEBUG_RATE(priv, "lq ant 0x%X 0x%X\n", | |
835 | lq->general_params.single_stream_ant_msk, | |
836 | lq->general_params.dual_stream_ant_msk); | |
837 | ||
838 | for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) | |
839 | IWL_DEBUG_RATE(priv, "lq index %d 0x%X\n", | |
840 | i, lq->rs_table[i].rate_n_flags); | |
841 | } | |
842 | #else | |
843 | static inline void iwl_dump_lq_cmd(struct iwl_priv *priv, | |
844 | struct iwl_link_quality_cmd *lq) | |
845 | { | |
846 | } | |
847 | #endif | |
848 | ||
849 | /** | |
850 | * is_lq_table_valid() - Test one aspect of LQ cmd for validity | |
851 | * | |
852 | * It sometimes happens when a HT rate has been in use and we | |
853 | * loose connectivity with AP then mac80211 will first tell us that the | |
854 | * current channel is not HT anymore before removing the station. In such a | |
855 | * scenario the RXON flags will be updated to indicate we are not | |
856 | * communicating HT anymore, but the LQ command may still contain HT rates. | |
857 | * Test for this to prevent driver from sending LQ command between the time | |
858 | * RXON flags are updated and when LQ command is updated. | |
859 | */ | |
860 | static bool is_lq_table_valid(struct iwl_priv *priv, | |
861 | struct iwl_rxon_context *ctx, | |
862 | struct iwl_link_quality_cmd *lq) | |
863 | { | |
864 | int i; | |
865 | ||
866 | if (ctx->ht.enabled) | |
867 | return true; | |
868 | ||
869 | IWL_DEBUG_INFO(priv, "Channel %u is not an HT channel\n", | |
870 | ctx->active.channel); | |
871 | for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) { | |
872 | if (le32_to_cpu(lq->rs_table[i].rate_n_flags) & | |
873 | RATE_MCS_HT_MSK) { | |
874 | IWL_DEBUG_INFO(priv, | |
875 | "index %d of LQ expects HT channel\n", | |
876 | i); | |
877 | return false; | |
878 | } | |
879 | } | |
880 | return true; | |
881 | } | |
882 | ||
883 | /** | |
884 | * iwl_send_lq_cmd() - Send link quality command | |
885 | * @init: This command is sent as part of station initialization right | |
886 | * after station has been added. | |
887 | * | |
888 | * The link quality command is sent as the last step of station creation. | |
889 | * This is the special case in which init is set and we call a callback in | |
890 | * this case to clear the state indicating that station creation is in | |
891 | * progress. | |
892 | */ | |
893 | int iwl_send_lq_cmd(struct iwl_priv *priv, struct iwl_rxon_context *ctx, | |
894 | struct iwl_link_quality_cmd *lq, u8 flags, bool init) | |
895 | { | |
896 | int ret = 0; | |
c745f55b WYG |
897 | struct iwl_host_cmd cmd = { |
898 | .id = REPLY_TX_LINK_QUALITY_CMD, | |
899 | .len = { sizeof(struct iwl_link_quality_cmd), }, | |
900 | .flags = flags, | |
901 | .data = { lq, }, | |
902 | }; | |
903 | ||
904 | if (WARN_ON(lq->sta_id == IWL_INVALID_STATION)) | |
905 | return -EINVAL; | |
906 | ||
907 | ||
fa23cb04 | 908 | spin_lock_bh(&priv->sta_lock); |
c745f55b | 909 | if (!(priv->stations[lq->sta_id].used & IWL_STA_DRIVER_ACTIVE)) { |
fa23cb04 | 910 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
911 | return -EINVAL; |
912 | } | |
fa23cb04 | 913 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
914 | |
915 | iwl_dump_lq_cmd(priv, lq); | |
916 | if (WARN_ON(init && (cmd.flags & CMD_ASYNC))) | |
917 | return -EINVAL; | |
918 | ||
919 | if (is_lq_table_valid(priv, ctx, lq)) | |
e10a0533 | 920 | ret = iwl_dvm_send_cmd(priv, &cmd); |
c745f55b WYG |
921 | else |
922 | ret = -EINVAL; | |
923 | ||
924 | if (cmd.flags & CMD_ASYNC) | |
925 | return ret; | |
926 | ||
927 | if (init) { | |
928 | IWL_DEBUG_INFO(priv, "init LQ command complete, " | |
929 | "clearing sta addition status for sta %d\n", | |
930 | lq->sta_id); | |
fa23cb04 | 931 | spin_lock_bh(&priv->sta_lock); |
c745f55b | 932 | priv->stations[lq->sta_id].used &= ~IWL_STA_UCODE_INPROGRESS; |
fa23cb04 | 933 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
934 | } |
935 | return ret; | |
936 | } | |
937 | ||
c745f55b | 938 | |
c079166e | 939 | static struct iwl_link_quality_cmd * |
c745f55b WYG |
940 | iwl_sta_alloc_lq(struct iwl_priv *priv, struct iwl_rxon_context *ctx, |
941 | u8 sta_id) | |
c079166e JB |
942 | { |
943 | struct iwl_link_quality_cmd *link_cmd; | |
944 | ||
945 | link_cmd = kzalloc(sizeof(struct iwl_link_quality_cmd), GFP_KERNEL); | |
946 | if (!link_cmd) { | |
947 | IWL_ERR(priv, "Unable to allocate memory for LQ cmd.\n"); | |
948 | return NULL; | |
949 | } | |
950 | ||
951 | iwl_sta_fill_lq(priv, ctx, sta_id, link_cmd); | |
a30e3112 JB |
952 | |
953 | return link_cmd; | |
954 | } | |
955 | ||
956 | /* | |
957 | * iwlagn_add_bssid_station - Add the special IBSS BSSID station | |
958 | * | |
959 | * Function sleeps. | |
960 | */ | |
c745f55b WYG |
961 | int iwlagn_add_bssid_station(struct iwl_priv *priv, |
962 | struct iwl_rxon_context *ctx, | |
a30e3112 JB |
963 | const u8 *addr, u8 *sta_id_r) |
964 | { | |
965 | int ret; | |
966 | u8 sta_id; | |
967 | struct iwl_link_quality_cmd *link_cmd; | |
a30e3112 JB |
968 | |
969 | if (sta_id_r) | |
970 | *sta_id_r = IWL_INVALID_STATION; | |
971 | ||
972 | ret = iwl_add_station_common(priv, ctx, addr, 0, NULL, &sta_id); | |
973 | if (ret) { | |
974 | IWL_ERR(priv, "Unable to add station %pM\n", addr); | |
975 | return ret; | |
976 | } | |
977 | ||
978 | if (sta_id_r) | |
979 | *sta_id_r = sta_id; | |
980 | ||
fa23cb04 | 981 | spin_lock_bh(&priv->sta_lock); |
a30e3112 | 982 | priv->stations[sta_id].used |= IWL_STA_LOCAL; |
fa23cb04 | 983 | spin_unlock_bh(&priv->sta_lock); |
a30e3112 JB |
984 | |
985 | /* Set up default rate scaling table in device's station table */ | |
f775aa06 | 986 | link_cmd = iwl_sta_alloc_lq(priv, ctx, sta_id); |
a30e3112 | 987 | if (!link_cmd) { |
c745f55b WYG |
988 | IWL_ERR(priv, |
989 | "Unable to initialize rate scaling for station %pM.\n", | |
a30e3112 JB |
990 | addr); |
991 | return -ENOMEM; | |
992 | } | |
993 | ||
994 | ret = iwl_send_lq_cmd(priv, ctx, link_cmd, CMD_SYNC, true); | |
995 | if (ret) | |
996 | IWL_ERR(priv, "Link quality command failed (%d)\n", ret); | |
997 | ||
fa23cb04 | 998 | spin_lock_bh(&priv->sta_lock); |
a30e3112 | 999 | priv->stations[sta_id].lq = link_cmd; |
fa23cb04 | 1000 | spin_unlock_bh(&priv->sta_lock); |
a30e3112 JB |
1001 | |
1002 | return 0; | |
1003 | } | |
1004 | ||
5a3d9882 JB |
1005 | /* |
1006 | * static WEP keys | |
1007 | * | |
1008 | * For each context, the device has a table of 4 static WEP keys | |
1009 | * (one for each key index) that is updated with the following | |
1010 | * commands. | |
1011 | */ | |
1012 | ||
a30e3112 JB |
1013 | static int iwl_send_static_wepkey_cmd(struct iwl_priv *priv, |
1014 | struct iwl_rxon_context *ctx, | |
1015 | bool send_if_empty) | |
1016 | { | |
1017 | int i, not_empty = 0; | |
1018 | u8 buff[sizeof(struct iwl_wep_cmd) + | |
1019 | sizeof(struct iwl_wep_key) * WEP_KEYS_MAX]; | |
1020 | struct iwl_wep_cmd *wep_cmd = (struct iwl_wep_cmd *)buff; | |
1021 | size_t cmd_size = sizeof(struct iwl_wep_cmd); | |
1022 | struct iwl_host_cmd cmd = { | |
1023 | .id = ctx->wep_key_cmd, | |
3fa50738 | 1024 | .data = { wep_cmd, }, |
a30e3112 JB |
1025 | .flags = CMD_SYNC, |
1026 | }; | |
1027 | ||
1028 | might_sleep(); | |
1029 | ||
1030 | memset(wep_cmd, 0, cmd_size + | |
1031 | (sizeof(struct iwl_wep_key) * WEP_KEYS_MAX)); | |
1032 | ||
1033 | for (i = 0; i < WEP_KEYS_MAX ; i++) { | |
1034 | wep_cmd->key[i].key_index = i; | |
1035 | if (ctx->wep_keys[i].key_size) { | |
1036 | wep_cmd->key[i].key_offset = i; | |
1037 | not_empty = 1; | |
1038 | } else { | |
1039 | wep_cmd->key[i].key_offset = WEP_INVALID_OFFSET; | |
1040 | } | |
1041 | ||
1042 | wep_cmd->key[i].key_size = ctx->wep_keys[i].key_size; | |
1043 | memcpy(&wep_cmd->key[i].key[3], ctx->wep_keys[i].key, | |
1044 | ctx->wep_keys[i].key_size); | |
1045 | } | |
1046 | ||
1047 | wep_cmd->global_key_type = WEP_KEY_WEP_TYPE; | |
1048 | wep_cmd->num_keys = WEP_KEYS_MAX; | |
1049 | ||
1050 | cmd_size += sizeof(struct iwl_wep_key) * WEP_KEYS_MAX; | |
1051 | ||
3fa50738 | 1052 | cmd.len[0] = cmd_size; |
a30e3112 JB |
1053 | |
1054 | if (not_empty || send_if_empty) | |
e10a0533 | 1055 | return iwl_dvm_send_cmd(priv, &cmd); |
a30e3112 JB |
1056 | else |
1057 | return 0; | |
1058 | } | |
1059 | ||
1060 | int iwl_restore_default_wep_keys(struct iwl_priv *priv, | |
1061 | struct iwl_rxon_context *ctx) | |
1062 | { | |
b1eea297 | 1063 | lockdep_assert_held(&priv->mutex); |
a30e3112 JB |
1064 | |
1065 | return iwl_send_static_wepkey_cmd(priv, ctx, false); | |
1066 | } | |
1067 | ||
1068 | int iwl_remove_default_wep_key(struct iwl_priv *priv, | |
1069 | struct iwl_rxon_context *ctx, | |
1070 | struct ieee80211_key_conf *keyconf) | |
1071 | { | |
1072 | int ret; | |
1073 | ||
b1eea297 | 1074 | lockdep_assert_held(&priv->mutex); |
a30e3112 JB |
1075 | |
1076 | IWL_DEBUG_WEP(priv, "Removing default WEP key: idx=%d\n", | |
1077 | keyconf->keyidx); | |
1078 | ||
1079 | memset(&ctx->wep_keys[keyconf->keyidx], 0, sizeof(ctx->wep_keys[0])); | |
83626404 | 1080 | if (iwl_is_rfkill(priv)) { |
c745f55b WYG |
1081 | IWL_DEBUG_WEP(priv, |
1082 | "Not sending REPLY_WEPKEY command due to RFKILL.\n"); | |
a30e3112 JB |
1083 | /* but keys in device are clear anyway so return success */ |
1084 | return 0; | |
1085 | } | |
1086 | ret = iwl_send_static_wepkey_cmd(priv, ctx, 1); | |
1087 | IWL_DEBUG_WEP(priv, "Remove default WEP key: idx=%d ret=%d\n", | |
1088 | keyconf->keyidx, ret); | |
1089 | ||
1090 | return ret; | |
1091 | } | |
1092 | ||
1093 | int iwl_set_default_wep_key(struct iwl_priv *priv, | |
1094 | struct iwl_rxon_context *ctx, | |
1095 | struct ieee80211_key_conf *keyconf) | |
1096 | { | |
1097 | int ret; | |
1098 | ||
b1eea297 | 1099 | lockdep_assert_held(&priv->mutex); |
a30e3112 JB |
1100 | |
1101 | if (keyconf->keylen != WEP_KEY_LEN_128 && | |
1102 | keyconf->keylen != WEP_KEY_LEN_64) { | |
c745f55b WYG |
1103 | IWL_DEBUG_WEP(priv, |
1104 | "Bad WEP key length %d\n", keyconf->keylen); | |
a30e3112 JB |
1105 | return -EINVAL; |
1106 | } | |
1107 | ||
5a3d9882 | 1108 | keyconf->hw_key_idx = IWLAGN_HW_KEY_DEFAULT; |
a30e3112 JB |
1109 | |
1110 | ctx->wep_keys[keyconf->keyidx].key_size = keyconf->keylen; | |
1111 | memcpy(&ctx->wep_keys[keyconf->keyidx].key, &keyconf->key, | |
1112 | keyconf->keylen); | |
1113 | ||
1114 | ret = iwl_send_static_wepkey_cmd(priv, ctx, false); | |
1115 | IWL_DEBUG_WEP(priv, "Set default WEP key: len=%d idx=%d ret=%d\n", | |
1116 | keyconf->keylen, keyconf->keyidx, ret); | |
1117 | ||
1118 | return ret; | |
1119 | } | |
1120 | ||
5a3d9882 JB |
1121 | /* |
1122 | * dynamic (per-station) keys | |
1123 | * | |
1124 | * The dynamic keys are a little more complicated. The device has | |
1125 | * a key cache of up to STA_KEY_MAX_NUM/STA_KEY_MAX_NUM_PAN keys. | |
1126 | * These are linked to stations by a table that contains an index | |
1127 | * into the key table for each station/key index/{mcast,unicast}, | |
1128 | * i.e. it's basically an array of pointers like this: | |
1129 | * key_offset_t key_mapping[NUM_STATIONS][4][2]; | |
1130 | * (it really works differently, but you can think of it as such) | |
1131 | * | |
1132 | * The key uploading and linking happens in the same command, the | |
1133 | * add station command with STA_MODIFY_KEY_MASK. | |
1134 | */ | |
a30e3112 | 1135 | |
5a3d9882 JB |
1136 | static u8 iwlagn_key_sta_id(struct iwl_priv *priv, |
1137 | struct ieee80211_vif *vif, | |
1138 | struct ieee80211_sta *sta) | |
1139 | { | |
1140 | struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv; | |
5a3d9882 JB |
1141 | |
1142 | if (sta) | |
40e4e686 | 1143 | return iwl_sta_id(sta); |
5a3d9882 JB |
1144 | |
1145 | /* | |
1146 | * The device expects GTKs for station interfaces to be | |
1147 | * installed as GTKs for the AP station. If we have no | |
1148 | * station ID, then use the ap_sta_id in that case. | |
1149 | */ | |
40e4e686 JB |
1150 | if (vif->type == NL80211_IFTYPE_STATION && vif_priv->ctx) |
1151 | return vif_priv->ctx->ap_sta_id; | |
a30e3112 | 1152 | |
40e4e686 | 1153 | return IWL_INVALID_STATION; |
a30e3112 JB |
1154 | } |
1155 | ||
e1b1c087 JB |
1156 | static int iwlagn_send_sta_key(struct iwl_priv *priv, |
1157 | struct ieee80211_key_conf *keyconf, | |
1158 | u8 sta_id, u32 tkip_iv32, u16 *tkip_p1k, | |
1159 | u32 cmd_flags) | |
a30e3112 | 1160 | { |
5a3d9882 | 1161 | __le16 key_flags; |
a30e3112 | 1162 | struct iwl_addsta_cmd sta_cmd; |
5a3d9882 | 1163 | int i; |
e1b1c087 | 1164 | |
fa23cb04 | 1165 | spin_lock_bh(&priv->sta_lock); |
5a3d9882 | 1166 | memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(sta_cmd)); |
fa23cb04 | 1167 | spin_unlock_bh(&priv->sta_lock); |
a30e3112 | 1168 | |
5a3d9882 JB |
1169 | key_flags = cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS); |
1170 | key_flags |= STA_KEY_FLG_MAP_KEY_MSK; | |
a30e3112 | 1171 | |
5a3d9882 JB |
1172 | switch (keyconf->cipher) { |
1173 | case WLAN_CIPHER_SUITE_CCMP: | |
1174 | key_flags |= STA_KEY_FLG_CCMP; | |
1175 | memcpy(sta_cmd.key.key, keyconf->key, keyconf->keylen); | |
1176 | break; | |
1177 | case WLAN_CIPHER_SUITE_TKIP: | |
1178 | key_flags |= STA_KEY_FLG_TKIP; | |
1179 | sta_cmd.key.tkip_rx_tsc_byte2 = tkip_iv32; | |
1180 | for (i = 0; i < 5; i++) | |
1181 | sta_cmd.key.tkip_rx_ttak[i] = cpu_to_le16(tkip_p1k[i]); | |
1182 | memcpy(sta_cmd.key.key, keyconf->key, keyconf->keylen); | |
1183 | break; | |
1184 | case WLAN_CIPHER_SUITE_WEP104: | |
1185 | key_flags |= STA_KEY_FLG_KEY_SIZE_MSK; | |
1186 | /* fall through */ | |
1187 | case WLAN_CIPHER_SUITE_WEP40: | |
1188 | key_flags |= STA_KEY_FLG_WEP; | |
1189 | memcpy(&sta_cmd.key.key[3], keyconf->key, keyconf->keylen); | |
1190 | break; | |
1191 | default: | |
1192 | WARN_ON(1); | |
1193 | return -EINVAL; | |
1194 | } | |
a30e3112 | 1195 | |
5a3d9882 | 1196 | if (!(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) |
a30e3112 JB |
1197 | key_flags |= STA_KEY_MULTICAST_MSK; |
1198 | ||
5a3d9882 JB |
1199 | /* key pointer (offset) */ |
1200 | sta_cmd.key.key_offset = keyconf->hw_key_idx; | |
a30e3112 | 1201 | |
5a3d9882 JB |
1202 | sta_cmd.key.key_flags = key_flags; |
1203 | sta_cmd.mode = STA_CONTROL_MODIFY_MSK; | |
1204 | sta_cmd.sta.modify_mask = STA_MODIFY_KEY_MASK; | |
a30e3112 | 1205 | |
5a3d9882 | 1206 | return iwl_send_add_sta(priv, &sta_cmd, cmd_flags); |
a30e3112 JB |
1207 | } |
1208 | ||
1209 | void iwl_update_tkip_key(struct iwl_priv *priv, | |
5a3d9882 | 1210 | struct ieee80211_vif *vif, |
a30e3112 JB |
1211 | struct ieee80211_key_conf *keyconf, |
1212 | struct ieee80211_sta *sta, u32 iv32, u16 *phase1key) | |
1213 | { | |
5a3d9882 JB |
1214 | u8 sta_id = iwlagn_key_sta_id(priv, vif, sta); |
1215 | ||
1216 | if (sta_id == IWL_INVALID_STATION) | |
1217 | return; | |
a30e3112 JB |
1218 | |
1219 | if (iwl_scan_cancel(priv)) { | |
1220 | /* cancel scan failed, just live w/ bad key and rely | |
1221 | briefly on SW decryption */ | |
1222 | return; | |
1223 | } | |
1224 | ||
e1b1c087 JB |
1225 | iwlagn_send_sta_key(priv, keyconf, sta_id, |
1226 | iv32, phase1key, CMD_ASYNC); | |
a30e3112 JB |
1227 | } |
1228 | ||
1229 | int iwl_remove_dynamic_key(struct iwl_priv *priv, | |
1230 | struct iwl_rxon_context *ctx, | |
1231 | struct ieee80211_key_conf *keyconf, | |
5a3d9882 | 1232 | struct ieee80211_sta *sta) |
a30e3112 | 1233 | { |
a30e3112 | 1234 | struct iwl_addsta_cmd sta_cmd; |
5a3d9882 | 1235 | u8 sta_id = iwlagn_key_sta_id(priv, ctx->vif, sta); |
5dcbf480 | 1236 | __le16 key_flags; |
5a3d9882 JB |
1237 | |
1238 | /* if station isn't there, neither is the key */ | |
1239 | if (sta_id == IWL_INVALID_STATION) | |
1240 | return -ENOENT; | |
1241 | ||
fa23cb04 | 1242 | spin_lock_bh(&priv->sta_lock); |
5a3d9882 JB |
1243 | memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(sta_cmd)); |
1244 | if (!(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) | |
1245 | sta_id = IWL_INVALID_STATION; | |
fa23cb04 | 1246 | spin_unlock_bh(&priv->sta_lock); |
5a3d9882 JB |
1247 | |
1248 | if (sta_id == IWL_INVALID_STATION) | |
1249 | return 0; | |
a30e3112 | 1250 | |
b1eea297 | 1251 | lockdep_assert_held(&priv->mutex); |
a30e3112 JB |
1252 | |
1253 | ctx->key_mapping_keys--; | |
1254 | ||
a30e3112 JB |
1255 | IWL_DEBUG_WEP(priv, "Remove dynamic key: idx=%d sta=%d\n", |
1256 | keyconf->keyidx, sta_id); | |
1257 | ||
5a3d9882 JB |
1258 | if (!test_and_clear_bit(keyconf->hw_key_idx, &priv->ucode_key_table)) |
1259 | IWL_ERR(priv, "offset %d not used in uCode key table.\n", | |
1260 | keyconf->hw_key_idx); | |
a30e3112 | 1261 | |
5dcbf480 JB |
1262 | key_flags = cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS); |
1263 | key_flags |= STA_KEY_FLG_MAP_KEY_MSK | STA_KEY_FLG_NO_ENC | | |
1264 | STA_KEY_FLG_INVALID; | |
1265 | ||
1266 | if (!(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) | |
1267 | key_flags |= STA_KEY_MULTICAST_MSK; | |
1268 | ||
1269 | sta_cmd.key.key_flags = key_flags; | |
d6ee27eb | 1270 | sta_cmd.key.key_offset = keyconf->hw_key_idx; |
5a3d9882 JB |
1271 | sta_cmd.sta.modify_mask = STA_MODIFY_KEY_MASK; |
1272 | sta_cmd.mode = STA_CONTROL_MODIFY_MSK; | |
a30e3112 JB |
1273 | |
1274 | return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); | |
1275 | } | |
1276 | ||
5a3d9882 JB |
1277 | int iwl_set_dynamic_key(struct iwl_priv *priv, |
1278 | struct iwl_rxon_context *ctx, | |
1279 | struct ieee80211_key_conf *keyconf, | |
1280 | struct ieee80211_sta *sta) | |
a30e3112 | 1281 | { |
5a3d9882 JB |
1282 | struct ieee80211_key_seq seq; |
1283 | u16 p1k[5]; | |
a30e3112 | 1284 | int ret; |
5a3d9882 JB |
1285 | u8 sta_id = iwlagn_key_sta_id(priv, ctx->vif, sta); |
1286 | const u8 *addr; | |
1287 | ||
1288 | if (sta_id == IWL_INVALID_STATION) | |
1289 | return -EINVAL; | |
a30e3112 | 1290 | |
b1eea297 | 1291 | lockdep_assert_held(&priv->mutex); |
a30e3112 | 1292 | |
5a3d9882 JB |
1293 | keyconf->hw_key_idx = iwl_get_free_ucode_key_offset(priv); |
1294 | if (keyconf->hw_key_idx == WEP_INVALID_OFFSET) | |
1295 | return -ENOSPC; | |
1296 | ||
a30e3112 | 1297 | ctx->key_mapping_keys++; |
a30e3112 JB |
1298 | |
1299 | switch (keyconf->cipher) { | |
a30e3112 | 1300 | case WLAN_CIPHER_SUITE_TKIP: |
5a3d9882 JB |
1301 | if (sta) |
1302 | addr = sta->addr; | |
1303 | else /* station mode case only */ | |
1304 | addr = ctx->active.bssid_addr; | |
1305 | ||
1306 | /* pre-fill phase 1 key into device cache */ | |
1307 | ieee80211_get_key_rx_seq(keyconf, 0, &seq); | |
1308 | ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); | |
e1b1c087 JB |
1309 | ret = iwlagn_send_sta_key(priv, keyconf, sta_id, |
1310 | seq.tkip.iv32, p1k, CMD_SYNC); | |
a30e3112 | 1311 | break; |
5a3d9882 | 1312 | case WLAN_CIPHER_SUITE_CCMP: |
a30e3112 JB |
1313 | case WLAN_CIPHER_SUITE_WEP40: |
1314 | case WLAN_CIPHER_SUITE_WEP104: | |
e1b1c087 JB |
1315 | ret = iwlagn_send_sta_key(priv, keyconf, sta_id, |
1316 | 0, NULL, CMD_SYNC); | |
a30e3112 JB |
1317 | break; |
1318 | default: | |
5a3d9882 | 1319 | IWL_ERR(priv, "Unknown cipher %x\n", keyconf->cipher); |
a30e3112 JB |
1320 | ret = -EINVAL; |
1321 | } | |
1322 | ||
5a3d9882 JB |
1323 | if (ret) { |
1324 | ctx->key_mapping_keys--; | |
1325 | clear_bit(keyconf->hw_key_idx, &priv->ucode_key_table); | |
1326 | } | |
1327 | ||
1328 | IWL_DEBUG_WEP(priv, "Set dynamic key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", | |
a30e3112 | 1329 | keyconf->cipher, keyconf->keylen, keyconf->keyidx, |
5a3d9882 | 1330 | sta ? sta->addr : NULL, ret); |
a30e3112 JB |
1331 | |
1332 | return ret; | |
1333 | } | |
1334 | ||
1335 | /** | |
1336 | * iwlagn_alloc_bcast_station - add broadcast station into driver's station table. | |
1337 | * | |
1338 | * This adds the broadcast station into the driver's station table | |
1339 | * and marks it driver active, so that it will be restored to the | |
1340 | * device at the next best time. | |
1341 | */ | |
1342 | int iwlagn_alloc_bcast_station(struct iwl_priv *priv, | |
1343 | struct iwl_rxon_context *ctx) | |
1344 | { | |
1345 | struct iwl_link_quality_cmd *link_cmd; | |
a30e3112 JB |
1346 | u8 sta_id; |
1347 | ||
fa23cb04 | 1348 | spin_lock_bh(&priv->sta_lock); |
a30e3112 JB |
1349 | sta_id = iwl_prep_station(priv, ctx, iwl_bcast_addr, false, NULL); |
1350 | if (sta_id == IWL_INVALID_STATION) { | |
1351 | IWL_ERR(priv, "Unable to prepare broadcast station\n"); | |
fa23cb04 | 1352 | spin_unlock_bh(&priv->sta_lock); |
a30e3112 JB |
1353 | |
1354 | return -EINVAL; | |
1355 | } | |
1356 | ||
1357 | priv->stations[sta_id].used |= IWL_STA_DRIVER_ACTIVE; | |
1358 | priv->stations[sta_id].used |= IWL_STA_BCAST; | |
fa23cb04 | 1359 | spin_unlock_bh(&priv->sta_lock); |
a30e3112 | 1360 | |
f775aa06 | 1361 | link_cmd = iwl_sta_alloc_lq(priv, ctx, sta_id); |
a30e3112 JB |
1362 | if (!link_cmd) { |
1363 | IWL_ERR(priv, | |
1364 | "Unable to initialize rate scaling for bcast station.\n"); | |
1365 | return -ENOMEM; | |
1366 | } | |
1367 | ||
fa23cb04 | 1368 | spin_lock_bh(&priv->sta_lock); |
a30e3112 | 1369 | priv->stations[sta_id].lq = link_cmd; |
fa23cb04 | 1370 | spin_unlock_bh(&priv->sta_lock); |
a30e3112 JB |
1371 | |
1372 | return 0; | |
1373 | } | |
1374 | ||
1375 | /** | |
1376 | * iwl_update_bcast_station - update broadcast station's LQ command | |
1377 | * | |
1378 | * Only used by iwlagn. Placed here to have all bcast station management | |
1379 | * code together. | |
1380 | */ | |
f775aa06 JB |
1381 | int iwl_update_bcast_station(struct iwl_priv *priv, |
1382 | struct iwl_rxon_context *ctx) | |
a30e3112 | 1383 | { |
a30e3112 JB |
1384 | struct iwl_link_quality_cmd *link_cmd; |
1385 | u8 sta_id = ctx->bcast_sta_id; | |
1386 | ||
f775aa06 | 1387 | link_cmd = iwl_sta_alloc_lq(priv, ctx, sta_id); |
a30e3112 JB |
1388 | if (!link_cmd) { |
1389 | IWL_ERR(priv, "Unable to initialize rate scaling for bcast station.\n"); | |
1390 | return -ENOMEM; | |
1391 | } | |
1392 | ||
fa23cb04 | 1393 | spin_lock_bh(&priv->sta_lock); |
a30e3112 JB |
1394 | if (priv->stations[sta_id].lq) |
1395 | kfree(priv->stations[sta_id].lq); | |
1396 | else | |
1397 | IWL_DEBUG_INFO(priv, "Bcast station rate scaling has not been initialized yet.\n"); | |
1398 | priv->stations[sta_id].lq = link_cmd; | |
fa23cb04 | 1399 | spin_unlock_bh(&priv->sta_lock); |
a30e3112 JB |
1400 | |
1401 | return 0; | |
1402 | } | |
1403 | ||
1404 | int iwl_update_bcast_stations(struct iwl_priv *priv) | |
1405 | { | |
1406 | struct iwl_rxon_context *ctx; | |
1407 | int ret = 0; | |
1408 | ||
1409 | for_each_context(priv, ctx) { | |
1410 | ret = iwl_update_bcast_station(priv, ctx); | |
1411 | if (ret) | |
1412 | break; | |
1413 | } | |
1414 | ||
1415 | return ret; | |
1416 | } | |
1417 | ||
1418 | /** | |
1419 | * iwl_sta_tx_modify_enable_tid - Enable Tx for this TID in station table | |
1420 | */ | |
1421 | int iwl_sta_tx_modify_enable_tid(struct iwl_priv *priv, int sta_id, int tid) | |
1422 | { | |
a30e3112 JB |
1423 | struct iwl_addsta_cmd sta_cmd; |
1424 | ||
b1eea297 | 1425 | lockdep_assert_held(&priv->mutex); |
a30e3112 JB |
1426 | |
1427 | /* Remove "disable" flag, to enable Tx for this TID */ | |
fa23cb04 | 1428 | spin_lock_bh(&priv->sta_lock); |
a30e3112 JB |
1429 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_TID_DISABLE_TX; |
1430 | priv->stations[sta_id].sta.tid_disable_tx &= cpu_to_le16(~(1 << tid)); | |
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_start(struct iwl_priv *priv, struct ieee80211_sta *sta, | |
1439 | int tid, u16 ssn) | |
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 | return -ENXIO; | |
1449 | ||
fa23cb04 | 1450 | spin_lock_bh(&priv->sta_lock); |
a30e3112 JB |
1451 | priv->stations[sta_id].sta.station_flags_msk = 0; |
1452 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_ADDBA_TID_MSK; | |
1453 | priv->stations[sta_id].sta.add_immediate_ba_tid = (u8)tid; | |
1454 | priv->stations[sta_id].sta.add_immediate_ba_ssn = cpu_to_le16(ssn); | |
1455 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
1456 | memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd)); | |
fa23cb04 | 1457 | spin_unlock_bh(&priv->sta_lock); |
a30e3112 JB |
1458 | |
1459 | return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); | |
1460 | } | |
1461 | ||
1462 | int iwl_sta_rx_agg_stop(struct iwl_priv *priv, struct ieee80211_sta *sta, | |
1463 | int tid) | |
1464 | { | |
a30e3112 JB |
1465 | int sta_id; |
1466 | struct iwl_addsta_cmd sta_cmd; | |
1467 | ||
b1eea297 | 1468 | lockdep_assert_held(&priv->mutex); |
a30e3112 JB |
1469 | |
1470 | sta_id = iwl_sta_id(sta); | |
1471 | if (sta_id == IWL_INVALID_STATION) { | |
1472 | IWL_ERR(priv, "Invalid station for AGG tid %d\n", tid); | |
1473 | return -ENXIO; | |
1474 | } | |
1475 | ||
fa23cb04 | 1476 | spin_lock_bh(&priv->sta_lock); |
a30e3112 JB |
1477 | priv->stations[sta_id].sta.station_flags_msk = 0; |
1478 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_DELBA_TID_MSK; | |
1479 | priv->stations[sta_id].sta.remove_immediate_ba_tid = (u8)tid; | |
1480 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
1481 | memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd)); | |
fa23cb04 | 1482 | spin_unlock_bh(&priv->sta_lock); |
a30e3112 JB |
1483 | |
1484 | return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); | |
1485 | } | |
1486 | ||
a30e3112 | 1487 | |
a30e3112 JB |
1488 | |
1489 | void iwl_sta_modify_sleep_tx_count(struct iwl_priv *priv, int sta_id, int cnt) | |
1490 | { | |
9451ca1a JB |
1491 | struct iwl_addsta_cmd cmd = { |
1492 | .mode = STA_CONTROL_MODIFY_MSK, | |
1493 | .station_flags = STA_FLG_PWR_SAVE_MSK, | |
1494 | .station_flags_msk = STA_FLG_PWR_SAVE_MSK, | |
1495 | .sta.sta_id = sta_id, | |
1496 | .sta.modify_mask = STA_MODIFY_SLEEP_TX_COUNT_MSK, | |
1497 | .sleep_tx_count = cpu_to_le16(cnt), | |
1498 | }; | |
a30e3112 | 1499 | |
9451ca1a | 1500 | iwl_send_add_sta(priv, &cmd, CMD_ASYNC); |
a30e3112 | 1501 | } |