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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" | |
33 | #include "iwl-core.h" | |
a30e3112 | 34 | #include "iwl-agn.h" |
bdfbf092 | 35 | #include "iwl-trans.h" |
a30e3112 | 36 | |
f32cadfc MV |
37 | const u8 iwl_bcast_addr[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; |
38 | ||
2da424b0 | 39 | static int iwl_sta_ucode_activate(struct iwl_priv *priv, u8 sta_id) |
c745f55b | 40 | { |
fa23cb04 JB |
41 | lockdep_assert_held(&priv->sta_lock); |
42 | ||
2da424b0 WYG |
43 | if (sta_id >= IWLAGN_STATION_COUNT) { |
44 | IWL_ERR(priv, "invalid sta_id %u", sta_id); | |
45 | return -EINVAL; | |
46 | } | |
c745f55b WYG |
47 | if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) |
48 | IWL_ERR(priv, "ACTIVATE a non DRIVER active station id %u " | |
49 | "addr %pM\n", | |
50 | sta_id, priv->stations[sta_id].sta.sta.addr); | |
51 | ||
52 | if (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE) { | |
53 | IWL_DEBUG_ASSOC(priv, | |
54 | "STA id %u addr %pM already present in uCode " | |
55 | "(according to driver)\n", | |
56 | sta_id, priv->stations[sta_id].sta.sta.addr); | |
57 | } else { | |
58 | priv->stations[sta_id].used |= IWL_STA_UCODE_ACTIVE; | |
59 | IWL_DEBUG_ASSOC(priv, "Added STA id %u addr %pM to uCode\n", | |
60 | sta_id, priv->stations[sta_id].sta.sta.addr); | |
61 | } | |
2da424b0 | 62 | return 0; |
c745f55b WYG |
63 | } |
64 | ||
65 | static int iwl_process_add_sta_resp(struct iwl_priv *priv, | |
66 | struct iwl_addsta_cmd *addsta, | |
67 | struct iwl_rx_packet *pkt) | |
68 | { | |
f8d7c1a1 | 69 | struct iwl_add_sta_resp *add_sta_resp = (void *)pkt->data; |
c745f55b | 70 | u8 sta_id = addsta->sta.sta_id; |
c745f55b WYG |
71 | int ret = -EIO; |
72 | ||
73 | if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) { | |
74 | IWL_ERR(priv, "Bad return from REPLY_ADD_STA (0x%08X)\n", | |
75 | pkt->hdr.flags); | |
76 | return ret; | |
77 | } | |
78 | ||
79 | IWL_DEBUG_INFO(priv, "Processing response for adding station %u\n", | |
80 | sta_id); | |
81 | ||
fa23cb04 | 82 | spin_lock(&priv->sta_lock); |
c745f55b | 83 | |
f8d7c1a1 | 84 | switch (add_sta_resp->status) { |
c745f55b WYG |
85 | case ADD_STA_SUCCESS_MSK: |
86 | IWL_DEBUG_INFO(priv, "REPLY_ADD_STA PASSED\n"); | |
2da424b0 | 87 | ret = iwl_sta_ucode_activate(priv, sta_id); |
c745f55b WYG |
88 | break; |
89 | case ADD_STA_NO_ROOM_IN_TABLE: | |
90 | IWL_ERR(priv, "Adding station %d failed, no room in table.\n", | |
91 | sta_id); | |
92 | break; | |
93 | case ADD_STA_NO_BLOCK_ACK_RESOURCE: | |
94 | IWL_ERR(priv, "Adding station %d failed, no block ack " | |
95 | "resource.\n", sta_id); | |
96 | break; | |
97 | case ADD_STA_MODIFY_NON_EXIST_STA: | |
98 | IWL_ERR(priv, "Attempting to modify non-existing station %d\n", | |
99 | sta_id); | |
100 | break; | |
101 | default: | |
102 | IWL_DEBUG_ASSOC(priv, "Received REPLY_ADD_STA:(0x%08X)\n", | |
f8d7c1a1 | 103 | add_sta_resp->status); |
c745f55b WYG |
104 | break; |
105 | } | |
106 | ||
107 | IWL_DEBUG_INFO(priv, "%s station id %u addr %pM\n", | |
108 | priv->stations[sta_id].sta.mode == | |
109 | STA_CONTROL_MODIFY_MSK ? "Modified" : "Added", | |
110 | sta_id, priv->stations[sta_id].sta.sta.addr); | |
111 | ||
112 | /* | |
113 | * XXX: The MAC address in the command buffer is often changed from | |
114 | * the original sent to the device. That is, the MAC address | |
115 | * written to the command buffer often is not the same MAC address | |
116 | * read from the command buffer when the command returns. This | |
117 | * issue has not yet been resolved and this debugging is left to | |
118 | * observe the problem. | |
119 | */ | |
120 | IWL_DEBUG_INFO(priv, "%s station according to cmd buffer %pM\n", | |
121 | priv->stations[sta_id].sta.mode == | |
122 | STA_CONTROL_MODIFY_MSK ? "Modified" : "Added", | |
123 | addsta->sta.addr); | |
fa23cb04 | 124 | spin_unlock(&priv->sta_lock); |
c745f55b WYG |
125 | |
126 | return ret; | |
127 | } | |
128 | ||
48a2d66f | 129 | int iwl_add_sta_callback(struct iwl_priv *priv, struct iwl_rx_cmd_buffer *rxb, |
c745f55b WYG |
130 | struct iwl_device_cmd *cmd) |
131 | { | |
132 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
133 | struct iwl_addsta_cmd *addsta = | |
134 | (struct iwl_addsta_cmd *) cmd->payload; | |
135 | ||
136 | return iwl_process_add_sta_resp(priv, addsta, pkt); | |
137 | } | |
138 | ||
c745f55b WYG |
139 | int iwl_send_add_sta(struct iwl_priv *priv, |
140 | struct iwl_addsta_cmd *sta, u8 flags) | |
141 | { | |
142 | int ret = 0; | |
c745f55b WYG |
143 | struct iwl_host_cmd cmd = { |
144 | .id = REPLY_ADD_STA, | |
145 | .flags = flags, | |
69b172f7 JB |
146 | .data = { sta, }, |
147 | .len = { sizeof(*sta), }, | |
c745f55b WYG |
148 | }; |
149 | u8 sta_id __maybe_unused = sta->sta.sta_id; | |
150 | ||
151 | IWL_DEBUG_INFO(priv, "Adding sta %u (%pM) %ssynchronously\n", | |
152 | sta_id, sta->sta.addr, flags & CMD_ASYNC ? "a" : ""); | |
153 | ||
154 | if (!(flags & CMD_ASYNC)) { | |
155 | cmd.flags |= CMD_WANT_SKB; | |
156 | might_sleep(); | |
157 | } | |
158 | ||
e10a0533 | 159 | ret = iwl_dvm_send_cmd(priv, &cmd); |
c745f55b WYG |
160 | |
161 | if (ret || (flags & CMD_ASYNC)) | |
162 | return ret; | |
163 | /*else the command was successfully sent in SYNC mode, need to free | |
164 | * the reply page */ | |
165 | ||
65b94a4a | 166 | iwl_free_resp(&cmd); |
c745f55b WYG |
167 | |
168 | if (cmd.handler_status) | |
169 | IWL_ERR(priv, "%s - error in the CMD response %d", __func__, | |
170 | cmd.handler_status); | |
171 | ||
172 | return cmd.handler_status; | |
173 | } | |
174 | ||
5edc565d MV |
175 | static bool iwl_is_channel_extension(struct iwl_priv *priv, |
176 | enum ieee80211_band band, | |
177 | u16 channel, u8 extension_chan_offset) | |
178 | { | |
179 | const struct iwl_channel_info *ch_info; | |
180 | ||
181 | ch_info = iwl_get_channel_info(priv, band, channel); | |
182 | if (!is_channel_valid(ch_info)) | |
183 | return false; | |
184 | ||
185 | if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_ABOVE) | |
186 | return !(ch_info->ht40_extension_channel & | |
187 | IEEE80211_CHAN_NO_HT40PLUS); | |
188 | else if (extension_chan_offset == IEEE80211_HT_PARAM_CHA_SEC_BELOW) | |
189 | return !(ch_info->ht40_extension_channel & | |
190 | IEEE80211_CHAN_NO_HT40MINUS); | |
191 | ||
192 | return false; | |
193 | } | |
194 | ||
195 | bool iwl_is_ht40_tx_allowed(struct iwl_priv *priv, | |
196 | struct iwl_rxon_context *ctx, | |
197 | struct ieee80211_sta_ht_cap *ht_cap) | |
198 | { | |
199 | if (!ctx->ht.enabled || !ctx->ht.is_40mhz) | |
200 | return false; | |
201 | ||
202 | /* | |
203 | * We do not check for IEEE80211_HT_CAP_SUP_WIDTH_20_40 | |
204 | * the bit will not set if it is pure 40MHz case | |
205 | */ | |
206 | if (ht_cap && !ht_cap->ht_supported) | |
207 | return false; | |
208 | ||
209 | #ifdef CONFIG_IWLWIFI_DEBUGFS | |
210 | if (priv->disable_ht40) | |
211 | return false; | |
212 | #endif | |
213 | ||
214 | return iwl_is_channel_extension(priv, priv->band, | |
215 | le16_to_cpu(ctx->staging.channel), | |
216 | ctx->ht.extension_chan_offset); | |
217 | } | |
218 | ||
ab0bd5b3 JB |
219 | static void iwl_sta_calc_ht_flags(struct iwl_priv *priv, |
220 | struct ieee80211_sta *sta, | |
221 | struct iwl_rxon_context *ctx, | |
222 | __le32 *flags, __le32 *mask) | |
c745f55b WYG |
223 | { |
224 | struct ieee80211_sta_ht_cap *sta_ht_inf = &sta->ht_cap; | |
c745f55b WYG |
225 | u8 mimo_ps_mode; |
226 | ||
ab0bd5b3 JB |
227 | *mask = STA_FLG_RTS_MIMO_PROT_MSK | |
228 | STA_FLG_MIMO_DIS_MSK | | |
229 | STA_FLG_HT40_EN_MSK | | |
230 | STA_FLG_MAX_AGG_SIZE_MSK | | |
231 | STA_FLG_AGG_MPDU_DENSITY_MSK; | |
232 | *flags = 0; | |
233 | ||
c745f55b | 234 | if (!sta || !sta_ht_inf->ht_supported) |
ab0bd5b3 | 235 | return; |
c745f55b WYG |
236 | |
237 | mimo_ps_mode = (sta_ht_inf->cap & IEEE80211_HT_CAP_SM_PS) >> 2; | |
ab0bd5b3 JB |
238 | |
239 | IWL_DEBUG_INFO(priv, "STA %pM SM PS mode: %s\n", | |
c745f55b WYG |
240 | (mimo_ps_mode == WLAN_HT_CAP_SM_PS_STATIC) ? |
241 | "static" : | |
242 | (mimo_ps_mode == WLAN_HT_CAP_SM_PS_DYNAMIC) ? | |
243 | "dynamic" : "disabled"); | |
244 | ||
c745f55b WYG |
245 | switch (mimo_ps_mode) { |
246 | case WLAN_HT_CAP_SM_PS_STATIC: | |
ab0bd5b3 | 247 | *flags |= STA_FLG_MIMO_DIS_MSK; |
c745f55b WYG |
248 | break; |
249 | case WLAN_HT_CAP_SM_PS_DYNAMIC: | |
ab0bd5b3 | 250 | *flags |= STA_FLG_RTS_MIMO_PROT_MSK; |
c745f55b WYG |
251 | break; |
252 | case WLAN_HT_CAP_SM_PS_DISABLED: | |
253 | break; | |
254 | default: | |
255 | IWL_WARN(priv, "Invalid MIMO PS mode %d\n", mimo_ps_mode); | |
256 | break; | |
257 | } | |
258 | ||
ab0bd5b3 JB |
259 | *flags |= cpu_to_le32( |
260 | (u32)sta_ht_inf->ampdu_factor << STA_FLG_MAX_AGG_SIZE_POS); | |
c745f55b | 261 | |
ab0bd5b3 JB |
262 | *flags |= cpu_to_le32( |
263 | (u32)sta_ht_inf->ampdu_density << STA_FLG_AGG_MPDU_DENSITY_POS); | |
c745f55b WYG |
264 | |
265 | if (iwl_is_ht40_tx_allowed(priv, ctx, &sta->ht_cap)) | |
ab0bd5b3 JB |
266 | *flags |= STA_FLG_HT40_EN_MSK; |
267 | } | |
268 | ||
269 | int iwl_sta_update_ht(struct iwl_priv *priv, struct iwl_rxon_context *ctx, | |
270 | struct ieee80211_sta *sta) | |
271 | { | |
272 | u8 sta_id = iwl_sta_id(sta); | |
273 | __le32 flags, mask; | |
274 | struct iwl_addsta_cmd cmd; | |
275 | ||
276 | if (WARN_ON_ONCE(sta_id == IWL_INVALID_STATION)) | |
277 | return -EINVAL; | |
c745f55b | 278 | |
ab0bd5b3 JB |
279 | iwl_sta_calc_ht_flags(priv, sta, ctx, &flags, &mask); |
280 | ||
281 | spin_lock_bh(&priv->sta_lock); | |
282 | priv->stations[sta_id].sta.station_flags &= ~mask; | |
283 | priv->stations[sta_id].sta.station_flags |= flags; | |
284 | spin_unlock_bh(&priv->sta_lock); | |
285 | ||
286 | memset(&cmd, 0, sizeof(cmd)); | |
287 | cmd.mode = STA_CONTROL_MODIFY_MSK; | |
288 | cmd.station_flags_msk = mask; | |
289 | cmd.station_flags = flags; | |
290 | cmd.sta.sta_id = sta_id; | |
291 | ||
292 | return iwl_send_add_sta(priv, &cmd, CMD_SYNC); | |
293 | } | |
294 | ||
295 | static void iwl_set_ht_add_station(struct iwl_priv *priv, u8 index, | |
296 | struct ieee80211_sta *sta, | |
297 | struct iwl_rxon_context *ctx) | |
298 | { | |
299 | __le32 flags, mask; | |
300 | ||
301 | iwl_sta_calc_ht_flags(priv, sta, ctx, &flags, &mask); | |
302 | ||
303 | lockdep_assert_held(&priv->sta_lock); | |
304 | priv->stations[index].sta.station_flags &= ~mask; | |
305 | priv->stations[index].sta.station_flags |= flags; | |
c745f55b WYG |
306 | } |
307 | ||
308 | /** | |
309 | * iwl_prep_station - Prepare station information for addition | |
310 | * | |
311 | * should be called with sta_lock held | |
312 | */ | |
313 | u8 iwl_prep_station(struct iwl_priv *priv, struct iwl_rxon_context *ctx, | |
314 | const u8 *addr, bool is_ap, struct ieee80211_sta *sta) | |
315 | { | |
316 | struct iwl_station_entry *station; | |
317 | int i; | |
318 | u8 sta_id = IWL_INVALID_STATION; | |
319 | ||
320 | if (is_ap) | |
321 | sta_id = ctx->ap_sta_id; | |
322 | else if (is_broadcast_ether_addr(addr)) | |
323 | sta_id = ctx->bcast_sta_id; | |
324 | else | |
325 | for (i = IWL_STA_ID; i < IWLAGN_STATION_COUNT; i++) { | |
326 | if (!compare_ether_addr(priv->stations[i].sta.sta.addr, | |
327 | addr)) { | |
328 | sta_id = i; | |
329 | break; | |
330 | } | |
331 | ||
332 | if (!priv->stations[i].used && | |
333 | sta_id == IWL_INVALID_STATION) | |
334 | sta_id = i; | |
335 | } | |
336 | ||
337 | /* | |
338 | * These two conditions have the same outcome, but keep them | |
339 | * separate | |
340 | */ | |
341 | if (unlikely(sta_id == IWL_INVALID_STATION)) | |
342 | return sta_id; | |
343 | ||
344 | /* | |
345 | * uCode is not able to deal with multiple requests to add a | |
346 | * station. Keep track if one is in progress so that we do not send | |
347 | * another. | |
348 | */ | |
349 | if (priv->stations[sta_id].used & IWL_STA_UCODE_INPROGRESS) { | |
350 | IWL_DEBUG_INFO(priv, "STA %d already in process of being " | |
351 | "added.\n", sta_id); | |
352 | return sta_id; | |
353 | } | |
354 | ||
355 | if ((priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE) && | |
356 | (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE) && | |
357 | !compare_ether_addr(priv->stations[sta_id].sta.sta.addr, addr)) { | |
358 | IWL_DEBUG_ASSOC(priv, "STA %d (%pM) already added, not " | |
359 | "adding again.\n", sta_id, addr); | |
360 | return sta_id; | |
361 | } | |
362 | ||
363 | station = &priv->stations[sta_id]; | |
364 | station->used = IWL_STA_DRIVER_ACTIVE; | |
365 | IWL_DEBUG_ASSOC(priv, "Add STA to driver ID %d: %pM\n", | |
366 | sta_id, addr); | |
367 | priv->num_stations++; | |
368 | ||
369 | /* Set up the REPLY_ADD_STA command to send to device */ | |
370 | memset(&station->sta, 0, sizeof(struct iwl_addsta_cmd)); | |
371 | memcpy(station->sta.sta.addr, addr, ETH_ALEN); | |
372 | station->sta.mode = 0; | |
373 | station->sta.sta.sta_id = sta_id; | |
374 | station->sta.station_flags = ctx->station_flags; | |
375 | station->ctxid = ctx->ctxid; | |
376 | ||
377 | if (sta) { | |
378 | struct iwl_station_priv *sta_priv; | |
379 | ||
380 | sta_priv = (void *)sta->drv_priv; | |
381 | sta_priv->ctx = ctx; | |
382 | } | |
383 | ||
384 | /* | |
385 | * OK to call unconditionally, since local stations (IBSS BSSID | |
386 | * STA and broadcast STA) pass in a NULL sta, and mac80211 | |
387 | * doesn't allow HT IBSS. | |
388 | */ | |
389 | iwl_set_ht_add_station(priv, sta_id, sta, ctx); | |
390 | ||
391 | return sta_id; | |
392 | ||
393 | } | |
394 | ||
395 | #define STA_WAIT_TIMEOUT (HZ/2) | |
396 | ||
397 | /** | |
398 | * iwl_add_station_common - | |
399 | */ | |
400 | int iwl_add_station_common(struct iwl_priv *priv, struct iwl_rxon_context *ctx, | |
401 | const u8 *addr, bool is_ap, | |
402 | struct ieee80211_sta *sta, u8 *sta_id_r) | |
403 | { | |
c745f55b WYG |
404 | int ret = 0; |
405 | u8 sta_id; | |
406 | struct iwl_addsta_cmd sta_cmd; | |
407 | ||
408 | *sta_id_r = 0; | |
fa23cb04 | 409 | spin_lock_bh(&priv->sta_lock); |
c745f55b WYG |
410 | sta_id = iwl_prep_station(priv, ctx, addr, is_ap, sta); |
411 | if (sta_id == IWL_INVALID_STATION) { | |
412 | IWL_ERR(priv, "Unable to prepare station %pM for addition\n", | |
413 | addr); | |
fa23cb04 | 414 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
415 | return -EINVAL; |
416 | } | |
417 | ||
418 | /* | |
419 | * uCode is not able to deal with multiple requests to add a | |
420 | * station. Keep track if one is in progress so that we do not send | |
421 | * another. | |
422 | */ | |
423 | if (priv->stations[sta_id].used & IWL_STA_UCODE_INPROGRESS) { | |
424 | IWL_DEBUG_INFO(priv, "STA %d already in process of being " | |
425 | "added.\n", sta_id); | |
fa23cb04 | 426 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
427 | return -EEXIST; |
428 | } | |
429 | ||
430 | if ((priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE) && | |
431 | (priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) { | |
432 | IWL_DEBUG_ASSOC(priv, "STA %d (%pM) already added, not " | |
433 | "adding again.\n", sta_id, addr); | |
fa23cb04 | 434 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
435 | return -EEXIST; |
436 | } | |
437 | ||
438 | priv->stations[sta_id].used |= IWL_STA_UCODE_INPROGRESS; | |
439 | memcpy(&sta_cmd, &priv->stations[sta_id].sta, | |
440 | sizeof(struct iwl_addsta_cmd)); | |
fa23cb04 | 441 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
442 | |
443 | /* Add station to device's station table */ | |
444 | ret = iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); | |
445 | if (ret) { | |
fa23cb04 | 446 | spin_lock_bh(&priv->sta_lock); |
c745f55b WYG |
447 | IWL_ERR(priv, "Adding station %pM failed.\n", |
448 | priv->stations[sta_id].sta.sta.addr); | |
449 | priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE; | |
450 | priv->stations[sta_id].used &= ~IWL_STA_UCODE_INPROGRESS; | |
fa23cb04 | 451 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
452 | } |
453 | *sta_id_r = sta_id; | |
454 | return ret; | |
455 | } | |
456 | ||
457 | /** | |
458 | * iwl_sta_ucode_deactivate - deactivate ucode status for a station | |
c745f55b WYG |
459 | */ |
460 | static void iwl_sta_ucode_deactivate(struct iwl_priv *priv, u8 sta_id) | |
461 | { | |
fa23cb04 JB |
462 | lockdep_assert_held(&priv->sta_lock); |
463 | ||
c745f55b WYG |
464 | /* Ucode must be active and driver must be non active */ |
465 | if ((priv->stations[sta_id].used & | |
466 | (IWL_STA_UCODE_ACTIVE | IWL_STA_DRIVER_ACTIVE)) != | |
467 | IWL_STA_UCODE_ACTIVE) | |
468 | IWL_ERR(priv, "removed non active STA %u\n", sta_id); | |
469 | ||
470 | priv->stations[sta_id].used &= ~IWL_STA_UCODE_ACTIVE; | |
471 | ||
472 | memset(&priv->stations[sta_id], 0, sizeof(struct iwl_station_entry)); | |
473 | IWL_DEBUG_ASSOC(priv, "Removed STA %u\n", sta_id); | |
474 | } | |
475 | ||
476 | static int iwl_send_remove_station(struct iwl_priv *priv, | |
477 | const u8 *addr, int sta_id, | |
478 | bool temporary) | |
479 | { | |
480 | struct iwl_rx_packet *pkt; | |
481 | int ret; | |
c745f55b WYG |
482 | struct iwl_rem_sta_cmd rm_sta_cmd; |
483 | ||
484 | struct iwl_host_cmd cmd = { | |
485 | .id = REPLY_REMOVE_STA, | |
486 | .len = { sizeof(struct iwl_rem_sta_cmd), }, | |
487 | .flags = CMD_SYNC, | |
488 | .data = { &rm_sta_cmd, }, | |
489 | }; | |
490 | ||
491 | memset(&rm_sta_cmd, 0, sizeof(rm_sta_cmd)); | |
492 | rm_sta_cmd.num_sta = 1; | |
493 | memcpy(&rm_sta_cmd.addr, addr, ETH_ALEN); | |
494 | ||
495 | cmd.flags |= CMD_WANT_SKB; | |
496 | ||
e10a0533 | 497 | ret = iwl_dvm_send_cmd(priv, &cmd); |
c745f55b WYG |
498 | |
499 | if (ret) | |
500 | return ret; | |
501 | ||
65b94a4a | 502 | pkt = cmd.resp_pkt; |
c745f55b WYG |
503 | if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) { |
504 | IWL_ERR(priv, "Bad return from REPLY_REMOVE_STA (0x%08X)\n", | |
505 | pkt->hdr.flags); | |
506 | ret = -EIO; | |
507 | } | |
508 | ||
509 | if (!ret) { | |
f8d7c1a1 JB |
510 | struct iwl_rem_sta_resp *rem_sta_resp = (void *)pkt->data; |
511 | switch (rem_sta_resp->status) { | |
c745f55b WYG |
512 | case REM_STA_SUCCESS_MSK: |
513 | if (!temporary) { | |
fa23cb04 | 514 | spin_lock_bh(&priv->sta_lock); |
c745f55b | 515 | iwl_sta_ucode_deactivate(priv, sta_id); |
fa23cb04 | 516 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
517 | } |
518 | IWL_DEBUG_ASSOC(priv, "REPLY_REMOVE_STA PASSED\n"); | |
519 | break; | |
520 | default: | |
521 | ret = -EIO; | |
522 | IWL_ERR(priv, "REPLY_REMOVE_STA failed\n"); | |
523 | break; | |
524 | } | |
525 | } | |
65b94a4a | 526 | iwl_free_resp(&cmd); |
c745f55b WYG |
527 | |
528 | return ret; | |
529 | } | |
530 | ||
531 | /** | |
532 | * iwl_remove_station - Remove driver's knowledge of station. | |
533 | */ | |
534 | int iwl_remove_station(struct iwl_priv *priv, const u8 sta_id, | |
535 | const u8 *addr) | |
536 | { | |
855c2ee8 | 537 | u8 tid; |
c745f55b | 538 | |
83626404 | 539 | if (!iwl_is_ready(priv)) { |
c745f55b WYG |
540 | IWL_DEBUG_INFO(priv, |
541 | "Unable to remove station %pM, device not ready.\n", | |
542 | addr); | |
543 | /* | |
544 | * It is typical for stations to be removed when we are | |
545 | * going down. Return success since device will be down | |
546 | * soon anyway | |
547 | */ | |
548 | return 0; | |
549 | } | |
550 | ||
551 | IWL_DEBUG_ASSOC(priv, "Removing STA from driver:%d %pM\n", | |
552 | sta_id, addr); | |
553 | ||
554 | if (WARN_ON(sta_id == IWL_INVALID_STATION)) | |
555 | return -EINVAL; | |
556 | ||
fa23cb04 | 557 | spin_lock_bh(&priv->sta_lock); |
c745f55b WYG |
558 | |
559 | if (!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)) { | |
560 | IWL_DEBUG_INFO(priv, "Removing %pM but non DRIVER active\n", | |
561 | addr); | |
562 | goto out_err; | |
563 | } | |
564 | ||
565 | if (!(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) { | |
566 | IWL_DEBUG_INFO(priv, "Removing %pM but non UCODE active\n", | |
567 | addr); | |
568 | goto out_err; | |
569 | } | |
570 | ||
571 | if (priv->stations[sta_id].used & IWL_STA_LOCAL) { | |
572 | kfree(priv->stations[sta_id].lq); | |
573 | priv->stations[sta_id].lq = NULL; | |
574 | } | |
575 | ||
855c2ee8 EG |
576 | for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) |
577 | memset(&priv->tid_data[sta_id][tid], 0, | |
578 | sizeof(priv->tid_data[sta_id][tid])); | |
579 | ||
c745f55b WYG |
580 | priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE; |
581 | ||
582 | priv->num_stations--; | |
583 | ||
584 | if (WARN_ON(priv->num_stations < 0)) | |
585 | priv->num_stations = 0; | |
586 | ||
fa23cb04 | 587 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
588 | |
589 | return iwl_send_remove_station(priv, addr, sta_id, false); | |
590 | out_err: | |
fa23cb04 | 591 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
592 | return -EINVAL; |
593 | } | |
594 | ||
97420515 JB |
595 | void iwl_deactivate_station(struct iwl_priv *priv, const u8 sta_id, |
596 | const u8 *addr) | |
597 | { | |
598 | u8 tid; | |
599 | ||
600 | if (!iwl_is_ready(priv)) { | |
601 | IWL_DEBUG_INFO(priv, | |
602 | "Unable to remove station %pM, device not ready.\n", | |
603 | addr); | |
604 | return; | |
605 | } | |
606 | ||
607 | IWL_DEBUG_ASSOC(priv, "Deactivating STA: %pM (%d)\n", addr, sta_id); | |
608 | ||
609 | if (WARN_ON_ONCE(sta_id == IWL_INVALID_STATION)) | |
610 | return; | |
611 | ||
612 | spin_lock_bh(&priv->sta_lock); | |
613 | ||
614 | WARN_ON_ONCE(!(priv->stations[sta_id].used & IWL_STA_DRIVER_ACTIVE)); | |
615 | ||
616 | for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) | |
617 | memset(&priv->tid_data[sta_id][tid], 0, | |
618 | sizeof(priv->tid_data[sta_id][tid])); | |
619 | ||
620 | priv->stations[sta_id].used &= ~IWL_STA_DRIVER_ACTIVE; | |
621 | ||
622 | priv->num_stations--; | |
623 | ||
624 | if (WARN_ON_ONCE(priv->num_stations < 0)) | |
625 | priv->num_stations = 0; | |
626 | ||
627 | spin_unlock_bh(&priv->sta_lock); | |
628 | } | |
629 | ||
4dcba6d3 JB |
630 | static void iwl_sta_fill_lq(struct iwl_priv *priv, struct iwl_rxon_context *ctx, |
631 | u8 sta_id, struct iwl_link_quality_cmd *link_cmd) | |
632 | { | |
633 | int i, r; | |
634 | u32 rate_flags = 0; | |
635 | __le32 rate_n_flags; | |
636 | ||
637 | lockdep_assert_held(&priv->mutex); | |
638 | ||
639 | memset(link_cmd, 0, sizeof(*link_cmd)); | |
640 | ||
641 | /* Set up the rate scaling to start at selected rate, fall back | |
642 | * all the way down to 1M in IEEE order, and then spin on 1M */ | |
643 | if (priv->band == IEEE80211_BAND_5GHZ) | |
644 | r = IWL_RATE_6M_INDEX; | |
645 | else if (ctx && ctx->vif && ctx->vif->p2p) | |
646 | r = IWL_RATE_6M_INDEX; | |
647 | else | |
648 | r = IWL_RATE_1M_INDEX; | |
649 | ||
650 | if (r >= IWL_FIRST_CCK_RATE && r <= IWL_LAST_CCK_RATE) | |
651 | rate_flags |= RATE_MCS_CCK_MSK; | |
652 | ||
653 | rate_flags |= first_antenna(priv->hw_params.valid_tx_ant) << | |
654 | RATE_MCS_ANT_POS; | |
655 | rate_n_flags = iwl_hw_set_rate_n_flags(iwl_rates[r].plcp, rate_flags); | |
656 | for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) | |
657 | link_cmd->rs_table[i].rate_n_flags = rate_n_flags; | |
658 | ||
659 | link_cmd->general_params.single_stream_ant_msk = | |
660 | first_antenna(priv->hw_params.valid_tx_ant); | |
661 | ||
662 | link_cmd->general_params.dual_stream_ant_msk = | |
663 | priv->hw_params.valid_tx_ant & | |
664 | ~first_antenna(priv->hw_params.valid_tx_ant); | |
665 | if (!link_cmd->general_params.dual_stream_ant_msk) { | |
666 | link_cmd->general_params.dual_stream_ant_msk = ANT_AB; | |
667 | } else if (num_of_ant(priv->hw_params.valid_tx_ant) == 2) { | |
668 | link_cmd->general_params.dual_stream_ant_msk = | |
669 | priv->hw_params.valid_tx_ant; | |
670 | } | |
671 | ||
672 | link_cmd->agg_params.agg_dis_start_th = | |
673 | LINK_QUAL_AGG_DISABLE_START_DEF; | |
674 | link_cmd->agg_params.agg_time_limit = | |
675 | cpu_to_le16(LINK_QUAL_AGG_TIME_LIMIT_DEF); | |
676 | ||
677 | link_cmd->sta_id = sta_id; | |
678 | } | |
679 | ||
c745f55b WYG |
680 | /** |
681 | * iwl_clear_ucode_stations - clear ucode station table bits | |
682 | * | |
683 | * This function clears all the bits in the driver indicating | |
684 | * which stations are active in the ucode. Call when something | |
685 | * other than explicit station management would cause this in | |
686 | * the ucode, e.g. unassociated RXON. | |
687 | */ | |
688 | void iwl_clear_ucode_stations(struct iwl_priv *priv, | |
689 | struct iwl_rxon_context *ctx) | |
690 | { | |
691 | int i; | |
c745f55b WYG |
692 | bool cleared = false; |
693 | ||
694 | IWL_DEBUG_INFO(priv, "Clearing ucode stations in driver\n"); | |
695 | ||
fa23cb04 | 696 | spin_lock_bh(&priv->sta_lock); |
c745f55b WYG |
697 | for (i = 0; i < IWLAGN_STATION_COUNT; i++) { |
698 | if (ctx && ctx->ctxid != priv->stations[i].ctxid) | |
699 | continue; | |
700 | ||
701 | if (priv->stations[i].used & IWL_STA_UCODE_ACTIVE) { | |
702 | IWL_DEBUG_INFO(priv, | |
703 | "Clearing ucode active for station %d\n", i); | |
704 | priv->stations[i].used &= ~IWL_STA_UCODE_ACTIVE; | |
705 | cleared = true; | |
706 | } | |
707 | } | |
fa23cb04 | 708 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
709 | |
710 | if (!cleared) | |
711 | IWL_DEBUG_INFO(priv, | |
712 | "No active stations found to be cleared\n"); | |
713 | } | |
714 | ||
715 | /** | |
716 | * iwl_restore_stations() - Restore driver known stations to device | |
717 | * | |
718 | * All stations considered active by driver, but not present in ucode, is | |
719 | * restored. | |
720 | * | |
721 | * Function sleeps. | |
722 | */ | |
723 | void iwl_restore_stations(struct iwl_priv *priv, struct iwl_rxon_context *ctx) | |
724 | { | |
725 | struct iwl_addsta_cmd sta_cmd; | |
726 | struct iwl_link_quality_cmd lq; | |
c745f55b WYG |
727 | int i; |
728 | bool found = false; | |
729 | int ret; | |
730 | bool send_lq; | |
731 | ||
83626404 | 732 | if (!iwl_is_ready(priv)) { |
c745f55b WYG |
733 | IWL_DEBUG_INFO(priv, |
734 | "Not ready yet, not restoring any stations.\n"); | |
735 | return; | |
736 | } | |
737 | ||
738 | IWL_DEBUG_ASSOC(priv, "Restoring all known stations ... start.\n"); | |
fa23cb04 | 739 | spin_lock_bh(&priv->sta_lock); |
c745f55b WYG |
740 | for (i = 0; i < IWLAGN_STATION_COUNT; i++) { |
741 | if (ctx->ctxid != priv->stations[i].ctxid) | |
742 | continue; | |
743 | if ((priv->stations[i].used & IWL_STA_DRIVER_ACTIVE) && | |
744 | !(priv->stations[i].used & IWL_STA_UCODE_ACTIVE)) { | |
745 | IWL_DEBUG_ASSOC(priv, "Restoring sta %pM\n", | |
746 | priv->stations[i].sta.sta.addr); | |
747 | priv->stations[i].sta.mode = 0; | |
748 | priv->stations[i].used |= IWL_STA_UCODE_INPROGRESS; | |
749 | found = true; | |
750 | } | |
751 | } | |
752 | ||
753 | for (i = 0; i < IWLAGN_STATION_COUNT; i++) { | |
754 | if ((priv->stations[i].used & IWL_STA_UCODE_INPROGRESS)) { | |
755 | memcpy(&sta_cmd, &priv->stations[i].sta, | |
756 | sizeof(struct iwl_addsta_cmd)); | |
757 | send_lq = false; | |
758 | if (priv->stations[i].lq) { | |
15b86bff | 759 | if (priv->wowlan) |
c745f55b WYG |
760 | iwl_sta_fill_lq(priv, ctx, i, &lq); |
761 | else | |
762 | memcpy(&lq, priv->stations[i].lq, | |
763 | sizeof(struct iwl_link_quality_cmd)); | |
764 | send_lq = true; | |
765 | } | |
fa23cb04 | 766 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
767 | ret = iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); |
768 | if (ret) { | |
fa23cb04 | 769 | spin_lock_bh(&priv->sta_lock); |
c745f55b WYG |
770 | IWL_ERR(priv, "Adding station %pM failed.\n", |
771 | priv->stations[i].sta.sta.addr); | |
772 | priv->stations[i].used &= | |
773 | ~IWL_STA_DRIVER_ACTIVE; | |
774 | priv->stations[i].used &= | |
775 | ~IWL_STA_UCODE_INPROGRESS; | |
fa23cb04 | 776 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
777 | } |
778 | /* | |
779 | * Rate scaling has already been initialized, send | |
780 | * current LQ command | |
781 | */ | |
782 | if (send_lq) | |
783 | iwl_send_lq_cmd(priv, ctx, &lq, | |
784 | CMD_SYNC, true); | |
fa23cb04 | 785 | spin_lock_bh(&priv->sta_lock); |
c745f55b WYG |
786 | priv->stations[i].used &= ~IWL_STA_UCODE_INPROGRESS; |
787 | } | |
788 | } | |
789 | ||
fa23cb04 | 790 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
791 | if (!found) |
792 | IWL_DEBUG_INFO(priv, "Restoring all known stations .... " | |
793 | "no stations to be restored.\n"); | |
794 | else | |
795 | IWL_DEBUG_INFO(priv, "Restoring all known stations .... " | |
796 | "complete.\n"); | |
797 | } | |
798 | ||
c745f55b WYG |
799 | int iwl_get_free_ucode_key_offset(struct iwl_priv *priv) |
800 | { | |
801 | int i; | |
802 | ||
803 | for (i = 0; i < priv->sta_key_max_num; i++) | |
804 | if (!test_and_set_bit(i, &priv->ucode_key_table)) | |
805 | return i; | |
806 | ||
807 | return WEP_INVALID_OFFSET; | |
808 | } | |
809 | ||
810 | void iwl_dealloc_bcast_stations(struct iwl_priv *priv) | |
811 | { | |
c745f55b WYG |
812 | int i; |
813 | ||
fa23cb04 | 814 | spin_lock_bh(&priv->sta_lock); |
c745f55b WYG |
815 | for (i = 0; i < IWLAGN_STATION_COUNT; i++) { |
816 | if (!(priv->stations[i].used & IWL_STA_BCAST)) | |
817 | continue; | |
818 | ||
819 | priv->stations[i].used &= ~IWL_STA_UCODE_ACTIVE; | |
820 | priv->num_stations--; | |
821 | if (WARN_ON(priv->num_stations < 0)) | |
822 | priv->num_stations = 0; | |
823 | kfree(priv->stations[i].lq); | |
824 | priv->stations[i].lq = NULL; | |
825 | } | |
fa23cb04 | 826 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
827 | } |
828 | ||
829 | #ifdef CONFIG_IWLWIFI_DEBUG | |
830 | static void iwl_dump_lq_cmd(struct iwl_priv *priv, | |
831 | struct iwl_link_quality_cmd *lq) | |
832 | { | |
833 | int i; | |
834 | IWL_DEBUG_RATE(priv, "lq station id 0x%x\n", lq->sta_id); | |
835 | IWL_DEBUG_RATE(priv, "lq ant 0x%X 0x%X\n", | |
836 | lq->general_params.single_stream_ant_msk, | |
837 | lq->general_params.dual_stream_ant_msk); | |
838 | ||
839 | for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) | |
840 | IWL_DEBUG_RATE(priv, "lq index %d 0x%X\n", | |
841 | i, lq->rs_table[i].rate_n_flags); | |
842 | } | |
843 | #else | |
844 | static inline void iwl_dump_lq_cmd(struct iwl_priv *priv, | |
845 | struct iwl_link_quality_cmd *lq) | |
846 | { | |
847 | } | |
848 | #endif | |
849 | ||
850 | /** | |
851 | * is_lq_table_valid() - Test one aspect of LQ cmd for validity | |
852 | * | |
853 | * It sometimes happens when a HT rate has been in use and we | |
854 | * loose connectivity with AP then mac80211 will first tell us that the | |
855 | * current channel is not HT anymore before removing the station. In such a | |
856 | * scenario the RXON flags will be updated to indicate we are not | |
857 | * communicating HT anymore, but the LQ command may still contain HT rates. | |
858 | * Test for this to prevent driver from sending LQ command between the time | |
859 | * RXON flags are updated and when LQ command is updated. | |
860 | */ | |
861 | static bool is_lq_table_valid(struct iwl_priv *priv, | |
862 | struct iwl_rxon_context *ctx, | |
863 | struct iwl_link_quality_cmd *lq) | |
864 | { | |
865 | int i; | |
866 | ||
867 | if (ctx->ht.enabled) | |
868 | return true; | |
869 | ||
870 | IWL_DEBUG_INFO(priv, "Channel %u is not an HT channel\n", | |
871 | ctx->active.channel); | |
872 | for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++) { | |
873 | if (le32_to_cpu(lq->rs_table[i].rate_n_flags) & | |
874 | RATE_MCS_HT_MSK) { | |
875 | IWL_DEBUG_INFO(priv, | |
876 | "index %d of LQ expects HT channel\n", | |
877 | i); | |
878 | return false; | |
879 | } | |
880 | } | |
881 | return true; | |
882 | } | |
883 | ||
884 | /** | |
885 | * iwl_send_lq_cmd() - Send link quality command | |
886 | * @init: This command is sent as part of station initialization right | |
887 | * after station has been added. | |
888 | * | |
889 | * The link quality command is sent as the last step of station creation. | |
890 | * This is the special case in which init is set and we call a callback in | |
891 | * this case to clear the state indicating that station creation is in | |
892 | * progress. | |
893 | */ | |
894 | int iwl_send_lq_cmd(struct iwl_priv *priv, struct iwl_rxon_context *ctx, | |
895 | struct iwl_link_quality_cmd *lq, u8 flags, bool init) | |
896 | { | |
897 | int ret = 0; | |
c745f55b WYG |
898 | struct iwl_host_cmd cmd = { |
899 | .id = REPLY_TX_LINK_QUALITY_CMD, | |
900 | .len = { sizeof(struct iwl_link_quality_cmd), }, | |
901 | .flags = flags, | |
902 | .data = { lq, }, | |
903 | }; | |
904 | ||
905 | if (WARN_ON(lq->sta_id == IWL_INVALID_STATION)) | |
906 | return -EINVAL; | |
907 | ||
908 | ||
fa23cb04 | 909 | spin_lock_bh(&priv->sta_lock); |
c745f55b | 910 | if (!(priv->stations[lq->sta_id].used & IWL_STA_DRIVER_ACTIVE)) { |
fa23cb04 | 911 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
912 | return -EINVAL; |
913 | } | |
fa23cb04 | 914 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
915 | |
916 | iwl_dump_lq_cmd(priv, lq); | |
917 | if (WARN_ON(init && (cmd.flags & CMD_ASYNC))) | |
918 | return -EINVAL; | |
919 | ||
920 | if (is_lq_table_valid(priv, ctx, lq)) | |
e10a0533 | 921 | ret = iwl_dvm_send_cmd(priv, &cmd); |
c745f55b WYG |
922 | else |
923 | ret = -EINVAL; | |
924 | ||
925 | if (cmd.flags & CMD_ASYNC) | |
926 | return ret; | |
927 | ||
928 | if (init) { | |
929 | IWL_DEBUG_INFO(priv, "init LQ command complete, " | |
930 | "clearing sta addition status for sta %d\n", | |
931 | lq->sta_id); | |
fa23cb04 | 932 | spin_lock_bh(&priv->sta_lock); |
c745f55b | 933 | priv->stations[lq->sta_id].used &= ~IWL_STA_UCODE_INPROGRESS; |
fa23cb04 | 934 | spin_unlock_bh(&priv->sta_lock); |
c745f55b WYG |
935 | } |
936 | return ret; | |
937 | } | |
938 | ||
c745f55b | 939 | |
c079166e | 940 | static struct iwl_link_quality_cmd * |
c745f55b WYG |
941 | iwl_sta_alloc_lq(struct iwl_priv *priv, struct iwl_rxon_context *ctx, |
942 | u8 sta_id) | |
c079166e JB |
943 | { |
944 | struct iwl_link_quality_cmd *link_cmd; | |
945 | ||
946 | link_cmd = kzalloc(sizeof(struct iwl_link_quality_cmd), GFP_KERNEL); | |
947 | if (!link_cmd) { | |
948 | IWL_ERR(priv, "Unable to allocate memory for LQ cmd.\n"); | |
949 | return NULL; | |
950 | } | |
951 | ||
952 | iwl_sta_fill_lq(priv, ctx, sta_id, link_cmd); | |
a30e3112 JB |
953 | |
954 | return link_cmd; | |
955 | } | |
956 | ||
957 | /* | |
958 | * iwlagn_add_bssid_station - Add the special IBSS BSSID station | |
959 | * | |
960 | * Function sleeps. | |
961 | */ | |
c745f55b WYG |
962 | int iwlagn_add_bssid_station(struct iwl_priv *priv, |
963 | struct iwl_rxon_context *ctx, | |
a30e3112 JB |
964 | const u8 *addr, u8 *sta_id_r) |
965 | { | |
966 | int ret; | |
967 | u8 sta_id; | |
968 | struct iwl_link_quality_cmd *link_cmd; | |
a30e3112 JB |
969 | |
970 | if (sta_id_r) | |
971 | *sta_id_r = IWL_INVALID_STATION; | |
972 | ||
973 | ret = iwl_add_station_common(priv, ctx, addr, 0, NULL, &sta_id); | |
974 | if (ret) { | |
975 | IWL_ERR(priv, "Unable to add station %pM\n", addr); | |
976 | return ret; | |
977 | } | |
978 | ||
979 | if (sta_id_r) | |
980 | *sta_id_r = sta_id; | |
981 | ||
fa23cb04 | 982 | spin_lock_bh(&priv->sta_lock); |
a30e3112 | 983 | priv->stations[sta_id].used |= IWL_STA_LOCAL; |
fa23cb04 | 984 | spin_unlock_bh(&priv->sta_lock); |
a30e3112 JB |
985 | |
986 | /* Set up default rate scaling table in device's station table */ | |
f775aa06 | 987 | link_cmd = iwl_sta_alloc_lq(priv, ctx, sta_id); |
a30e3112 | 988 | if (!link_cmd) { |
c745f55b WYG |
989 | IWL_ERR(priv, |
990 | "Unable to initialize rate scaling for station %pM.\n", | |
a30e3112 JB |
991 | addr); |
992 | return -ENOMEM; | |
993 | } | |
994 | ||
995 | ret = iwl_send_lq_cmd(priv, ctx, link_cmd, CMD_SYNC, true); | |
996 | if (ret) | |
997 | IWL_ERR(priv, "Link quality command failed (%d)\n", ret); | |
998 | ||
fa23cb04 | 999 | spin_lock_bh(&priv->sta_lock); |
a30e3112 | 1000 | priv->stations[sta_id].lq = link_cmd; |
fa23cb04 | 1001 | spin_unlock_bh(&priv->sta_lock); |
a30e3112 JB |
1002 | |
1003 | return 0; | |
1004 | } | |
1005 | ||
5a3d9882 JB |
1006 | /* |
1007 | * static WEP keys | |
1008 | * | |
1009 | * For each context, the device has a table of 4 static WEP keys | |
1010 | * (one for each key index) that is updated with the following | |
1011 | * commands. | |
1012 | */ | |
1013 | ||
a30e3112 JB |
1014 | static int iwl_send_static_wepkey_cmd(struct iwl_priv *priv, |
1015 | struct iwl_rxon_context *ctx, | |
1016 | bool send_if_empty) | |
1017 | { | |
1018 | int i, not_empty = 0; | |
1019 | u8 buff[sizeof(struct iwl_wep_cmd) + | |
1020 | sizeof(struct iwl_wep_key) * WEP_KEYS_MAX]; | |
1021 | struct iwl_wep_cmd *wep_cmd = (struct iwl_wep_cmd *)buff; | |
1022 | size_t cmd_size = sizeof(struct iwl_wep_cmd); | |
1023 | struct iwl_host_cmd cmd = { | |
1024 | .id = ctx->wep_key_cmd, | |
3fa50738 | 1025 | .data = { wep_cmd, }, |
a30e3112 JB |
1026 | .flags = CMD_SYNC, |
1027 | }; | |
1028 | ||
1029 | might_sleep(); | |
1030 | ||
1031 | memset(wep_cmd, 0, cmd_size + | |
1032 | (sizeof(struct iwl_wep_key) * WEP_KEYS_MAX)); | |
1033 | ||
1034 | for (i = 0; i < WEP_KEYS_MAX ; i++) { | |
1035 | wep_cmd->key[i].key_index = i; | |
1036 | if (ctx->wep_keys[i].key_size) { | |
1037 | wep_cmd->key[i].key_offset = i; | |
1038 | not_empty = 1; | |
1039 | } else { | |
1040 | wep_cmd->key[i].key_offset = WEP_INVALID_OFFSET; | |
1041 | } | |
1042 | ||
1043 | wep_cmd->key[i].key_size = ctx->wep_keys[i].key_size; | |
1044 | memcpy(&wep_cmd->key[i].key[3], ctx->wep_keys[i].key, | |
1045 | ctx->wep_keys[i].key_size); | |
1046 | } | |
1047 | ||
1048 | wep_cmd->global_key_type = WEP_KEY_WEP_TYPE; | |
1049 | wep_cmd->num_keys = WEP_KEYS_MAX; | |
1050 | ||
1051 | cmd_size += sizeof(struct iwl_wep_key) * WEP_KEYS_MAX; | |
1052 | ||
3fa50738 | 1053 | cmd.len[0] = cmd_size; |
a30e3112 JB |
1054 | |
1055 | if (not_empty || send_if_empty) | |
e10a0533 | 1056 | return iwl_dvm_send_cmd(priv, &cmd); |
a30e3112 JB |
1057 | else |
1058 | return 0; | |
1059 | } | |
1060 | ||
1061 | int iwl_restore_default_wep_keys(struct iwl_priv *priv, | |
1062 | struct iwl_rxon_context *ctx) | |
1063 | { | |
b1eea297 | 1064 | lockdep_assert_held(&priv->mutex); |
a30e3112 JB |
1065 | |
1066 | return iwl_send_static_wepkey_cmd(priv, ctx, false); | |
1067 | } | |
1068 | ||
1069 | int iwl_remove_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 | IWL_DEBUG_WEP(priv, "Removing default WEP key: idx=%d\n", | |
1078 | keyconf->keyidx); | |
1079 | ||
1080 | memset(&ctx->wep_keys[keyconf->keyidx], 0, sizeof(ctx->wep_keys[0])); | |
83626404 | 1081 | if (iwl_is_rfkill(priv)) { |
c745f55b WYG |
1082 | IWL_DEBUG_WEP(priv, |
1083 | "Not sending REPLY_WEPKEY command due to RFKILL.\n"); | |
a30e3112 JB |
1084 | /* but keys in device are clear anyway so return success */ |
1085 | return 0; | |
1086 | } | |
1087 | ret = iwl_send_static_wepkey_cmd(priv, ctx, 1); | |
1088 | IWL_DEBUG_WEP(priv, "Remove default WEP key: idx=%d ret=%d\n", | |
1089 | keyconf->keyidx, ret); | |
1090 | ||
1091 | return ret; | |
1092 | } | |
1093 | ||
1094 | int iwl_set_default_wep_key(struct iwl_priv *priv, | |
1095 | struct iwl_rxon_context *ctx, | |
1096 | struct ieee80211_key_conf *keyconf) | |
1097 | { | |
1098 | int ret; | |
1099 | ||
b1eea297 | 1100 | lockdep_assert_held(&priv->mutex); |
a30e3112 JB |
1101 | |
1102 | if (keyconf->keylen != WEP_KEY_LEN_128 && | |
1103 | keyconf->keylen != WEP_KEY_LEN_64) { | |
c745f55b WYG |
1104 | IWL_DEBUG_WEP(priv, |
1105 | "Bad WEP key length %d\n", keyconf->keylen); | |
a30e3112 JB |
1106 | return -EINVAL; |
1107 | } | |
1108 | ||
5a3d9882 | 1109 | keyconf->hw_key_idx = IWLAGN_HW_KEY_DEFAULT; |
a30e3112 JB |
1110 | |
1111 | ctx->wep_keys[keyconf->keyidx].key_size = keyconf->keylen; | |
1112 | memcpy(&ctx->wep_keys[keyconf->keyidx].key, &keyconf->key, | |
1113 | keyconf->keylen); | |
1114 | ||
1115 | ret = iwl_send_static_wepkey_cmd(priv, ctx, false); | |
1116 | IWL_DEBUG_WEP(priv, "Set default WEP key: len=%d idx=%d ret=%d\n", | |
1117 | keyconf->keylen, keyconf->keyidx, ret); | |
1118 | ||
1119 | return ret; | |
1120 | } | |
1121 | ||
5a3d9882 JB |
1122 | /* |
1123 | * dynamic (per-station) keys | |
1124 | * | |
1125 | * The dynamic keys are a little more complicated. The device has | |
1126 | * a key cache of up to STA_KEY_MAX_NUM/STA_KEY_MAX_NUM_PAN keys. | |
1127 | * These are linked to stations by a table that contains an index | |
1128 | * into the key table for each station/key index/{mcast,unicast}, | |
1129 | * i.e. it's basically an array of pointers like this: | |
1130 | * key_offset_t key_mapping[NUM_STATIONS][4][2]; | |
1131 | * (it really works differently, but you can think of it as such) | |
1132 | * | |
1133 | * The key uploading and linking happens in the same command, the | |
1134 | * add station command with STA_MODIFY_KEY_MASK. | |
1135 | */ | |
a30e3112 | 1136 | |
5a3d9882 JB |
1137 | static u8 iwlagn_key_sta_id(struct iwl_priv *priv, |
1138 | struct ieee80211_vif *vif, | |
1139 | struct ieee80211_sta *sta) | |
1140 | { | |
1141 | struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv; | |
5a3d9882 JB |
1142 | |
1143 | if (sta) | |
40e4e686 | 1144 | return iwl_sta_id(sta); |
5a3d9882 JB |
1145 | |
1146 | /* | |
1147 | * The device expects GTKs for station interfaces to be | |
1148 | * installed as GTKs for the AP station. If we have no | |
1149 | * station ID, then use the ap_sta_id in that case. | |
1150 | */ | |
40e4e686 JB |
1151 | if (vif->type == NL80211_IFTYPE_STATION && vif_priv->ctx) |
1152 | return vif_priv->ctx->ap_sta_id; | |
a30e3112 | 1153 | |
40e4e686 | 1154 | return IWL_INVALID_STATION; |
a30e3112 JB |
1155 | } |
1156 | ||
e1b1c087 JB |
1157 | static int iwlagn_send_sta_key(struct iwl_priv *priv, |
1158 | struct ieee80211_key_conf *keyconf, | |
1159 | u8 sta_id, u32 tkip_iv32, u16 *tkip_p1k, | |
1160 | u32 cmd_flags) | |
a30e3112 | 1161 | { |
5a3d9882 | 1162 | __le16 key_flags; |
a30e3112 | 1163 | struct iwl_addsta_cmd sta_cmd; |
5a3d9882 | 1164 | int i; |
e1b1c087 | 1165 | |
fa23cb04 | 1166 | spin_lock_bh(&priv->sta_lock); |
5a3d9882 | 1167 | memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(sta_cmd)); |
fa23cb04 | 1168 | spin_unlock_bh(&priv->sta_lock); |
a30e3112 | 1169 | |
5a3d9882 JB |
1170 | key_flags = cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS); |
1171 | key_flags |= STA_KEY_FLG_MAP_KEY_MSK; | |
a30e3112 | 1172 | |
5a3d9882 JB |
1173 | switch (keyconf->cipher) { |
1174 | case WLAN_CIPHER_SUITE_CCMP: | |
1175 | key_flags |= STA_KEY_FLG_CCMP; | |
1176 | memcpy(sta_cmd.key.key, keyconf->key, keyconf->keylen); | |
1177 | break; | |
1178 | case WLAN_CIPHER_SUITE_TKIP: | |
1179 | key_flags |= STA_KEY_FLG_TKIP; | |
1180 | sta_cmd.key.tkip_rx_tsc_byte2 = tkip_iv32; | |
1181 | for (i = 0; i < 5; i++) | |
1182 | sta_cmd.key.tkip_rx_ttak[i] = cpu_to_le16(tkip_p1k[i]); | |
1183 | memcpy(sta_cmd.key.key, keyconf->key, keyconf->keylen); | |
1184 | break; | |
1185 | case WLAN_CIPHER_SUITE_WEP104: | |
1186 | key_flags |= STA_KEY_FLG_KEY_SIZE_MSK; | |
1187 | /* fall through */ | |
1188 | case WLAN_CIPHER_SUITE_WEP40: | |
1189 | key_flags |= STA_KEY_FLG_WEP; | |
1190 | memcpy(&sta_cmd.key.key[3], keyconf->key, keyconf->keylen); | |
1191 | break; | |
1192 | default: | |
1193 | WARN_ON(1); | |
1194 | return -EINVAL; | |
1195 | } | |
a30e3112 | 1196 | |
5a3d9882 | 1197 | if (!(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) |
a30e3112 JB |
1198 | key_flags |= STA_KEY_MULTICAST_MSK; |
1199 | ||
5a3d9882 JB |
1200 | /* key pointer (offset) */ |
1201 | sta_cmd.key.key_offset = keyconf->hw_key_idx; | |
a30e3112 | 1202 | |
5a3d9882 JB |
1203 | sta_cmd.key.key_flags = key_flags; |
1204 | sta_cmd.mode = STA_CONTROL_MODIFY_MSK; | |
1205 | sta_cmd.sta.modify_mask = STA_MODIFY_KEY_MASK; | |
a30e3112 | 1206 | |
5a3d9882 | 1207 | return iwl_send_add_sta(priv, &sta_cmd, cmd_flags); |
a30e3112 JB |
1208 | } |
1209 | ||
1210 | void iwl_update_tkip_key(struct iwl_priv *priv, | |
5a3d9882 | 1211 | struct ieee80211_vif *vif, |
a30e3112 JB |
1212 | struct ieee80211_key_conf *keyconf, |
1213 | struct ieee80211_sta *sta, u32 iv32, u16 *phase1key) | |
1214 | { | |
5a3d9882 JB |
1215 | u8 sta_id = iwlagn_key_sta_id(priv, vif, sta); |
1216 | ||
1217 | if (sta_id == IWL_INVALID_STATION) | |
1218 | return; | |
a30e3112 JB |
1219 | |
1220 | if (iwl_scan_cancel(priv)) { | |
1221 | /* cancel scan failed, just live w/ bad key and rely | |
1222 | briefly on SW decryption */ | |
1223 | return; | |
1224 | } | |
1225 | ||
e1b1c087 JB |
1226 | iwlagn_send_sta_key(priv, keyconf, sta_id, |
1227 | iv32, phase1key, CMD_ASYNC); | |
a30e3112 JB |
1228 | } |
1229 | ||
1230 | int iwl_remove_dynamic_key(struct iwl_priv *priv, | |
1231 | struct iwl_rxon_context *ctx, | |
1232 | struct ieee80211_key_conf *keyconf, | |
5a3d9882 | 1233 | struct ieee80211_sta *sta) |
a30e3112 | 1234 | { |
a30e3112 | 1235 | struct iwl_addsta_cmd sta_cmd; |
5a3d9882 | 1236 | u8 sta_id = iwlagn_key_sta_id(priv, ctx->vif, sta); |
5dcbf480 | 1237 | __le16 key_flags; |
5a3d9882 JB |
1238 | |
1239 | /* if station isn't there, neither is the key */ | |
1240 | if (sta_id == IWL_INVALID_STATION) | |
1241 | return -ENOENT; | |
1242 | ||
fa23cb04 | 1243 | spin_lock_bh(&priv->sta_lock); |
5a3d9882 JB |
1244 | memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(sta_cmd)); |
1245 | if (!(priv->stations[sta_id].used & IWL_STA_UCODE_ACTIVE)) | |
1246 | sta_id = IWL_INVALID_STATION; | |
fa23cb04 | 1247 | spin_unlock_bh(&priv->sta_lock); |
5a3d9882 JB |
1248 | |
1249 | if (sta_id == IWL_INVALID_STATION) | |
1250 | return 0; | |
a30e3112 | 1251 | |
b1eea297 | 1252 | lockdep_assert_held(&priv->mutex); |
a30e3112 JB |
1253 | |
1254 | ctx->key_mapping_keys--; | |
1255 | ||
a30e3112 JB |
1256 | IWL_DEBUG_WEP(priv, "Remove dynamic key: idx=%d sta=%d\n", |
1257 | keyconf->keyidx, sta_id); | |
1258 | ||
5a3d9882 JB |
1259 | if (!test_and_clear_bit(keyconf->hw_key_idx, &priv->ucode_key_table)) |
1260 | IWL_ERR(priv, "offset %d not used in uCode key table.\n", | |
1261 | keyconf->hw_key_idx); | |
a30e3112 | 1262 | |
5dcbf480 JB |
1263 | key_flags = cpu_to_le16(keyconf->keyidx << STA_KEY_FLG_KEYID_POS); |
1264 | key_flags |= STA_KEY_FLG_MAP_KEY_MSK | STA_KEY_FLG_NO_ENC | | |
1265 | STA_KEY_FLG_INVALID; | |
1266 | ||
1267 | if (!(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) | |
1268 | key_flags |= STA_KEY_MULTICAST_MSK; | |
1269 | ||
1270 | sta_cmd.key.key_flags = key_flags; | |
5a3d9882 JB |
1271 | sta_cmd.key.key_offset = WEP_INVALID_OFFSET; |
1272 | sta_cmd.sta.modify_mask = STA_MODIFY_KEY_MASK; | |
1273 | sta_cmd.mode = STA_CONTROL_MODIFY_MSK; | |
a30e3112 JB |
1274 | |
1275 | return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); | |
1276 | } | |
1277 | ||
5a3d9882 JB |
1278 | int iwl_set_dynamic_key(struct iwl_priv *priv, |
1279 | struct iwl_rxon_context *ctx, | |
1280 | struct ieee80211_key_conf *keyconf, | |
1281 | struct ieee80211_sta *sta) | |
a30e3112 | 1282 | { |
5a3d9882 JB |
1283 | struct ieee80211_key_seq seq; |
1284 | u16 p1k[5]; | |
a30e3112 | 1285 | int ret; |
5a3d9882 JB |
1286 | u8 sta_id = iwlagn_key_sta_id(priv, ctx->vif, sta); |
1287 | const u8 *addr; | |
1288 | ||
1289 | if (sta_id == IWL_INVALID_STATION) | |
1290 | return -EINVAL; | |
a30e3112 | 1291 | |
b1eea297 | 1292 | lockdep_assert_held(&priv->mutex); |
a30e3112 | 1293 | |
5a3d9882 JB |
1294 | keyconf->hw_key_idx = iwl_get_free_ucode_key_offset(priv); |
1295 | if (keyconf->hw_key_idx == WEP_INVALID_OFFSET) | |
1296 | return -ENOSPC; | |
1297 | ||
a30e3112 | 1298 | ctx->key_mapping_keys++; |
a30e3112 JB |
1299 | |
1300 | switch (keyconf->cipher) { | |
a30e3112 | 1301 | case WLAN_CIPHER_SUITE_TKIP: |
5a3d9882 JB |
1302 | if (sta) |
1303 | addr = sta->addr; | |
1304 | else /* station mode case only */ | |
1305 | addr = ctx->active.bssid_addr; | |
1306 | ||
1307 | /* pre-fill phase 1 key into device cache */ | |
1308 | ieee80211_get_key_rx_seq(keyconf, 0, &seq); | |
1309 | ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k); | |
e1b1c087 JB |
1310 | ret = iwlagn_send_sta_key(priv, keyconf, sta_id, |
1311 | seq.tkip.iv32, p1k, CMD_SYNC); | |
a30e3112 | 1312 | break; |
5a3d9882 | 1313 | case WLAN_CIPHER_SUITE_CCMP: |
a30e3112 JB |
1314 | case WLAN_CIPHER_SUITE_WEP40: |
1315 | case WLAN_CIPHER_SUITE_WEP104: | |
e1b1c087 JB |
1316 | ret = iwlagn_send_sta_key(priv, keyconf, sta_id, |
1317 | 0, NULL, CMD_SYNC); | |
a30e3112 JB |
1318 | break; |
1319 | default: | |
5a3d9882 | 1320 | IWL_ERR(priv, "Unknown cipher %x\n", keyconf->cipher); |
a30e3112 JB |
1321 | ret = -EINVAL; |
1322 | } | |
1323 | ||
5a3d9882 JB |
1324 | if (ret) { |
1325 | ctx->key_mapping_keys--; | |
1326 | clear_bit(keyconf->hw_key_idx, &priv->ucode_key_table); | |
1327 | } | |
1328 | ||
1329 | IWL_DEBUG_WEP(priv, "Set dynamic key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n", | |
a30e3112 | 1330 | keyconf->cipher, keyconf->keylen, keyconf->keyidx, |
5a3d9882 | 1331 | sta ? sta->addr : NULL, ret); |
a30e3112 JB |
1332 | |
1333 | return ret; | |
1334 | } | |
1335 | ||
1336 | /** | |
1337 | * iwlagn_alloc_bcast_station - add broadcast station into driver's station table. | |
1338 | * | |
1339 | * This adds the broadcast station into the driver's station table | |
1340 | * and marks it driver active, so that it will be restored to the | |
1341 | * device at the next best time. | |
1342 | */ | |
1343 | int iwlagn_alloc_bcast_station(struct iwl_priv *priv, | |
1344 | struct iwl_rxon_context *ctx) | |
1345 | { | |
1346 | struct iwl_link_quality_cmd *link_cmd; | |
a30e3112 JB |
1347 | u8 sta_id; |
1348 | ||
fa23cb04 | 1349 | spin_lock_bh(&priv->sta_lock); |
a30e3112 JB |
1350 | sta_id = iwl_prep_station(priv, ctx, iwl_bcast_addr, false, NULL); |
1351 | if (sta_id == IWL_INVALID_STATION) { | |
1352 | IWL_ERR(priv, "Unable to prepare broadcast station\n"); | |
fa23cb04 | 1353 | spin_unlock_bh(&priv->sta_lock); |
a30e3112 JB |
1354 | |
1355 | return -EINVAL; | |
1356 | } | |
1357 | ||
1358 | priv->stations[sta_id].used |= IWL_STA_DRIVER_ACTIVE; | |
1359 | priv->stations[sta_id].used |= IWL_STA_BCAST; | |
fa23cb04 | 1360 | spin_unlock_bh(&priv->sta_lock); |
a30e3112 | 1361 | |
f775aa06 | 1362 | link_cmd = iwl_sta_alloc_lq(priv, ctx, sta_id); |
a30e3112 JB |
1363 | if (!link_cmd) { |
1364 | IWL_ERR(priv, | |
1365 | "Unable to initialize rate scaling for bcast station.\n"); | |
1366 | return -ENOMEM; | |
1367 | } | |
1368 | ||
fa23cb04 | 1369 | spin_lock_bh(&priv->sta_lock); |
a30e3112 | 1370 | priv->stations[sta_id].lq = link_cmd; |
fa23cb04 | 1371 | spin_unlock_bh(&priv->sta_lock); |
a30e3112 JB |
1372 | |
1373 | return 0; | |
1374 | } | |
1375 | ||
1376 | /** | |
1377 | * iwl_update_bcast_station - update broadcast station's LQ command | |
1378 | * | |
1379 | * Only used by iwlagn. Placed here to have all bcast station management | |
1380 | * code together. | |
1381 | */ | |
f775aa06 JB |
1382 | int iwl_update_bcast_station(struct iwl_priv *priv, |
1383 | struct iwl_rxon_context *ctx) | |
a30e3112 | 1384 | { |
a30e3112 JB |
1385 | struct iwl_link_quality_cmd *link_cmd; |
1386 | u8 sta_id = ctx->bcast_sta_id; | |
1387 | ||
f775aa06 | 1388 | link_cmd = iwl_sta_alloc_lq(priv, ctx, sta_id); |
a30e3112 JB |
1389 | if (!link_cmd) { |
1390 | IWL_ERR(priv, "Unable to initialize rate scaling for bcast station.\n"); | |
1391 | return -ENOMEM; | |
1392 | } | |
1393 | ||
fa23cb04 | 1394 | spin_lock_bh(&priv->sta_lock); |
a30e3112 JB |
1395 | if (priv->stations[sta_id].lq) |
1396 | kfree(priv->stations[sta_id].lq); | |
1397 | else | |
1398 | IWL_DEBUG_INFO(priv, "Bcast station rate scaling has not been initialized yet.\n"); | |
1399 | priv->stations[sta_id].lq = link_cmd; | |
fa23cb04 | 1400 | spin_unlock_bh(&priv->sta_lock); |
a30e3112 JB |
1401 | |
1402 | return 0; | |
1403 | } | |
1404 | ||
1405 | int iwl_update_bcast_stations(struct iwl_priv *priv) | |
1406 | { | |
1407 | struct iwl_rxon_context *ctx; | |
1408 | int ret = 0; | |
1409 | ||
1410 | for_each_context(priv, ctx) { | |
1411 | ret = iwl_update_bcast_station(priv, ctx); | |
1412 | if (ret) | |
1413 | break; | |
1414 | } | |
1415 | ||
1416 | return ret; | |
1417 | } | |
1418 | ||
1419 | /** | |
1420 | * iwl_sta_tx_modify_enable_tid - Enable Tx for this TID in station table | |
1421 | */ | |
1422 | int iwl_sta_tx_modify_enable_tid(struct iwl_priv *priv, int sta_id, int tid) | |
1423 | { | |
a30e3112 JB |
1424 | struct iwl_addsta_cmd sta_cmd; |
1425 | ||
b1eea297 | 1426 | lockdep_assert_held(&priv->mutex); |
a30e3112 JB |
1427 | |
1428 | /* Remove "disable" flag, to enable Tx for this TID */ | |
fa23cb04 | 1429 | spin_lock_bh(&priv->sta_lock); |
a30e3112 JB |
1430 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_TID_DISABLE_TX; |
1431 | priv->stations[sta_id].sta.tid_disable_tx &= cpu_to_le16(~(1 << tid)); | |
1432 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
1433 | memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd)); | |
fa23cb04 | 1434 | spin_unlock_bh(&priv->sta_lock); |
a30e3112 JB |
1435 | |
1436 | return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); | |
1437 | } | |
1438 | ||
1439 | int iwl_sta_rx_agg_start(struct iwl_priv *priv, struct ieee80211_sta *sta, | |
1440 | int tid, u16 ssn) | |
1441 | { | |
a30e3112 JB |
1442 | int sta_id; |
1443 | struct iwl_addsta_cmd sta_cmd; | |
1444 | ||
b1eea297 | 1445 | lockdep_assert_held(&priv->mutex); |
a30e3112 JB |
1446 | |
1447 | sta_id = iwl_sta_id(sta); | |
1448 | if (sta_id == IWL_INVALID_STATION) | |
1449 | return -ENXIO; | |
1450 | ||
fa23cb04 | 1451 | spin_lock_bh(&priv->sta_lock); |
a30e3112 JB |
1452 | priv->stations[sta_id].sta.station_flags_msk = 0; |
1453 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_ADDBA_TID_MSK; | |
1454 | priv->stations[sta_id].sta.add_immediate_ba_tid = (u8)tid; | |
1455 | priv->stations[sta_id].sta.add_immediate_ba_ssn = cpu_to_le16(ssn); | |
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 | ||
1463 | int iwl_sta_rx_agg_stop(struct iwl_priv *priv, struct ieee80211_sta *sta, | |
1464 | int tid) | |
1465 | { | |
a30e3112 JB |
1466 | int sta_id; |
1467 | struct iwl_addsta_cmd sta_cmd; | |
1468 | ||
b1eea297 | 1469 | lockdep_assert_held(&priv->mutex); |
a30e3112 JB |
1470 | |
1471 | sta_id = iwl_sta_id(sta); | |
1472 | if (sta_id == IWL_INVALID_STATION) { | |
1473 | IWL_ERR(priv, "Invalid station for AGG tid %d\n", tid); | |
1474 | return -ENXIO; | |
1475 | } | |
1476 | ||
fa23cb04 | 1477 | spin_lock_bh(&priv->sta_lock); |
a30e3112 JB |
1478 | priv->stations[sta_id].sta.station_flags_msk = 0; |
1479 | priv->stations[sta_id].sta.sta.modify_mask = STA_MODIFY_DELBA_TID_MSK; | |
1480 | priv->stations[sta_id].sta.remove_immediate_ba_tid = (u8)tid; | |
1481 | priv->stations[sta_id].sta.mode = STA_CONTROL_MODIFY_MSK; | |
1482 | memcpy(&sta_cmd, &priv->stations[sta_id].sta, sizeof(struct iwl_addsta_cmd)); | |
fa23cb04 | 1483 | spin_unlock_bh(&priv->sta_lock); |
a30e3112 JB |
1484 | |
1485 | return iwl_send_add_sta(priv, &sta_cmd, CMD_SYNC); | |
1486 | } | |
1487 | ||
a30e3112 | 1488 | |
a30e3112 JB |
1489 | |
1490 | void iwl_sta_modify_sleep_tx_count(struct iwl_priv *priv, int sta_id, int cnt) | |
1491 | { | |
9451ca1a JB |
1492 | struct iwl_addsta_cmd cmd = { |
1493 | .mode = STA_CONTROL_MODIFY_MSK, | |
1494 | .station_flags = STA_FLG_PWR_SAVE_MSK, | |
1495 | .station_flags_msk = STA_FLG_PWR_SAVE_MSK, | |
1496 | .sta.sta_id = sta_id, | |
1497 | .sta.modify_mask = STA_MODIFY_SLEEP_TX_COUNT_MSK, | |
1498 | .sleep_tx_count = cpu_to_le16(cnt), | |
1499 | }; | |
a30e3112 | 1500 | |
9451ca1a | 1501 | iwl_send_add_sta(priv, &cmd, CMD_ASYNC); |
a30e3112 | 1502 | } |