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1 | /****************************************************************************** | |
2 | * | |
3 | * This file is provided under a dual BSD/GPLv2 license. When using or | |
4 | * redistributing this file, you may do so under either license. | |
5 | * | |
6 | * GPL LICENSE SUMMARY | |
7 | * | |
8 | * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved. | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of version 2 of the GNU General Public License as | |
12 | * published by the Free Software Foundation. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, but | |
15 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
17 | * General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, | |
22 | * USA | |
23 | * | |
24 | * The full GNU General Public License is included in this distribution | |
25 | * in the file called LICENSE.GPL. | |
26 | * | |
27 | * Contact Information: | |
28 | * Intel Linux Wireless <ilw@linux.intel.com> | |
29 | * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
30 | * | |
31 | * BSD LICENSE | |
32 | * | |
33 | * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved. | |
34 | * All rights reserved. | |
35 | * | |
36 | * Redistribution and use in source and binary forms, with or without | |
37 | * modification, are permitted provided that the following conditions | |
38 | * are met: | |
39 | * | |
40 | * * Redistributions of source code must retain the above copyright | |
41 | * notice, this list of conditions and the following disclaimer. | |
42 | * * Redistributions in binary form must reproduce the above copyright | |
43 | * notice, this list of conditions and the following disclaimer in | |
44 | * the documentation and/or other materials provided with the | |
45 | * distribution. | |
46 | * * Neither the name Intel Corporation nor the names of its | |
47 | * contributors may be used to endorse or promote products derived | |
48 | * from this software without specific prior written permission. | |
49 | * | |
50 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
51 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
52 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
53 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
54 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
55 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
56 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
57 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
58 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
59 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
60 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
61 | * | |
62 | *****************************************************************************/ | |
63 | ||
64 | #include <linux/etherdevice.h> | |
65 | #include <net/mac80211.h> | |
66 | #include "iwl-io.h" | |
67 | #include "iwl-prph.h" | |
68 | #include "fw-api.h" | |
69 | #include "mvm.h" | |
70 | ||
71 | const u8 iwl_mvm_ac_to_tx_fifo[] = { | |
72 | IWL_MVM_TX_FIFO_BK, | |
73 | IWL_MVM_TX_FIFO_BE, | |
74 | IWL_MVM_TX_FIFO_VI, | |
75 | IWL_MVM_TX_FIFO_VO, | |
76 | }; | |
77 | ||
78 | struct iwl_mvm_mac_iface_iterator_data { | |
79 | struct iwl_mvm *mvm; | |
80 | struct ieee80211_vif *vif; | |
81 | unsigned long available_mac_ids[BITS_TO_LONGS(NUM_MAC_INDEX_DRIVER)]; | |
82 | unsigned long available_tsf_ids[BITS_TO_LONGS(NUM_TSF_IDS)]; | |
83 | unsigned long used_hw_queues[BITS_TO_LONGS(IWL_MVM_FIRST_AGG_QUEUE)]; | |
84 | enum iwl_tsf_id preferred_tsf; | |
85 | bool found_vif; | |
86 | }; | |
87 | ||
88 | static void iwl_mvm_mac_iface_iterator(void *_data, u8 *mac, | |
89 | struct ieee80211_vif *vif) | |
90 | { | |
91 | struct iwl_mvm_mac_iface_iterator_data *data = _data; | |
92 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
93 | u32 ac; | |
94 | ||
95 | /* Iterator may already find the interface being added -- skip it */ | |
96 | if (vif == data->vif) { | |
97 | data->found_vif = true; | |
98 | return; | |
99 | } | |
100 | ||
101 | /* Mark the queues used by the vif */ | |
102 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
103 | if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE) | |
104 | __set_bit(vif->hw_queue[ac], data->used_hw_queues); | |
105 | ||
106 | if (vif->cab_queue != IEEE80211_INVAL_HW_QUEUE) | |
107 | __set_bit(vif->cab_queue, data->used_hw_queues); | |
108 | ||
109 | /* | |
110 | * Mark MAC IDs as used by clearing the available bit, and | |
111 | * (below) mark TSFs as used if their existing use is not | |
112 | * compatible with the new interface type. | |
113 | * No locking or atomic bit operations are needed since the | |
114 | * data is on the stack of the caller function. | |
115 | */ | |
116 | __clear_bit(mvmvif->id, data->available_mac_ids); | |
117 | ||
118 | /* | |
119 | * The TSF is a hardware/firmware resource, there are 4 and | |
120 | * the driver should assign and free them as needed. However, | |
121 | * there are cases where 2 MACs should share the same TSF ID | |
122 | * for the purpose of clock sync, an optimization to avoid | |
123 | * clock drift causing overlapping TBTTs/DTIMs for a GO and | |
124 | * client in the system. | |
125 | * | |
126 | * The firmware will decide according to the MAC type which | |
127 | * will be the master and slave. Clients that need to sync | |
128 | * with a remote station will be the master, and an AP or GO | |
129 | * will be the slave. | |
130 | * | |
131 | * Depending on the new interface type it can be slaved to | |
132 | * or become the master of an existing interface. | |
133 | */ | |
134 | switch (data->vif->type) { | |
135 | case NL80211_IFTYPE_STATION: | |
136 | /* | |
137 | * The new interface is client, so if the existing one | |
138 | * we're iterating is an AP, the TSF should be used to | |
139 | * avoid drift between the new client and existing AP, | |
140 | * the existing AP will get drift updates from the new | |
141 | * client context in this case | |
142 | */ | |
143 | if (vif->type == NL80211_IFTYPE_AP) { | |
144 | if (data->preferred_tsf == NUM_TSF_IDS && | |
145 | test_bit(mvmvif->tsf_id, data->available_tsf_ids)) | |
146 | data->preferred_tsf = mvmvif->tsf_id; | |
147 | return; | |
148 | } | |
149 | break; | |
150 | case NL80211_IFTYPE_AP: | |
151 | /* | |
152 | * The new interface is AP/GO, so should get drift | |
153 | * updates from an existing client or use the same | |
154 | * TSF as an existing GO. There's no drift between | |
155 | * TSFs internally but if they used different TSFs | |
156 | * then a new client MAC could update one of them | |
157 | * and cause drift that way. | |
158 | */ | |
159 | if (vif->type == NL80211_IFTYPE_STATION || | |
160 | vif->type == NL80211_IFTYPE_AP) { | |
161 | if (data->preferred_tsf == NUM_TSF_IDS && | |
162 | test_bit(mvmvif->tsf_id, data->available_tsf_ids)) | |
163 | data->preferred_tsf = mvmvif->tsf_id; | |
164 | return; | |
165 | } | |
166 | break; | |
167 | default: | |
168 | /* | |
169 | * For all other interface types there's no need to | |
170 | * take drift into account. Either they're exclusive | |
171 | * like IBSS and monitor, or we don't care much about | |
172 | * their TSF (like P2P Device), but we won't be able | |
173 | * to share the TSF resource. | |
174 | */ | |
175 | break; | |
176 | } | |
177 | ||
178 | /* | |
179 | * Unless we exited above, we can't share the TSF resource | |
180 | * that the virtual interface we're iterating over is using | |
181 | * with the new one, so clear the available bit and if this | |
182 | * was the preferred one, reset that as well. | |
183 | */ | |
184 | __clear_bit(mvmvif->tsf_id, data->available_tsf_ids); | |
185 | ||
186 | if (data->preferred_tsf == mvmvif->tsf_id) | |
187 | data->preferred_tsf = NUM_TSF_IDS; | |
188 | } | |
189 | ||
190 | /* | |
191 | * Get the mask of the queus used by the vif | |
192 | */ | |
193 | u32 iwl_mvm_mac_get_queues_mask(struct iwl_mvm *mvm, | |
194 | struct ieee80211_vif *vif) | |
195 | { | |
196 | u32 qmask, ac; | |
197 | ||
198 | if (vif->type == NL80211_IFTYPE_P2P_DEVICE) | |
199 | return BIT(IWL_OFFCHANNEL_QUEUE); | |
200 | ||
201 | qmask = (vif->cab_queue != IEEE80211_INVAL_HW_QUEUE) ? | |
202 | BIT(vif->cab_queue) : 0; | |
203 | ||
204 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
205 | if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE) | |
206 | qmask |= BIT(vif->hw_queue[ac]); | |
207 | ||
208 | return qmask; | |
209 | } | |
210 | ||
211 | static int iwl_mvm_mac_ctxt_allocate_resources(struct iwl_mvm *mvm, | |
212 | struct ieee80211_vif *vif) | |
213 | { | |
214 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
215 | struct iwl_mvm_mac_iface_iterator_data data = { | |
216 | .mvm = mvm, | |
217 | .vif = vif, | |
218 | .available_mac_ids = { (1 << NUM_MAC_INDEX_DRIVER) - 1 }, | |
219 | .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 }, | |
220 | /* no preference yet */ | |
221 | .preferred_tsf = NUM_TSF_IDS, | |
222 | .used_hw_queues = { | |
223 | BIT(IWL_MVM_OFFCHANNEL_QUEUE) | | |
224 | BIT(IWL_MVM_AUX_QUEUE) | | |
225 | BIT(IWL_MVM_CMD_QUEUE) | |
226 | }, | |
227 | .found_vif = false, | |
228 | }; | |
229 | u32 ac; | |
230 | int ret; | |
231 | ||
232 | /* | |
233 | * Allocate a MAC ID and a TSF for this MAC, along with the queues | |
234 | * and other resources. | |
235 | */ | |
236 | ||
237 | /* | |
238 | * Before the iterator, we start with all MAC IDs and TSFs available. | |
239 | * | |
240 | * During iteration, all MAC IDs are cleared that are in use by other | |
241 | * virtual interfaces, and all TSF IDs are cleared that can't be used | |
242 | * by this new virtual interface because they're used by an interface | |
243 | * that can't share it with the new one. | |
244 | * At the same time, we check if there's a preferred TSF in the case | |
245 | * that we should share it with another interface. | |
246 | */ | |
247 | ||
248 | ieee80211_iterate_active_interfaces_atomic( | |
249 | mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, | |
250 | iwl_mvm_mac_iface_iterator, &data); | |
251 | ||
252 | /* | |
253 | * In the case we're getting here during resume, it's similar to | |
254 | * firmware restart, and with RESUME_ALL the iterator will find | |
255 | * the vif being added already. | |
256 | * We don't want to reassign any IDs in either case since doing | |
257 | * so would probably assign different IDs (as interfaces aren't | |
258 | * necessarily added in the same order), but the old IDs were | |
259 | * preserved anyway, so skip ID assignment for both resume and | |
260 | * recovery. | |
261 | */ | |
262 | if (data.found_vif) | |
263 | return 0; | |
264 | ||
265 | /* Therefore, in recovery, we can't get here */ | |
266 | WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)); | |
267 | ||
268 | mvmvif->id = find_first_bit(data.available_mac_ids, | |
269 | NUM_MAC_INDEX_DRIVER); | |
270 | if (mvmvif->id == NUM_MAC_INDEX_DRIVER) { | |
271 | IWL_ERR(mvm, "Failed to init MAC context - no free ID!\n"); | |
272 | ret = -EIO; | |
273 | goto exit_fail; | |
274 | } | |
275 | ||
276 | if (data.preferred_tsf != NUM_TSF_IDS) | |
277 | mvmvif->tsf_id = data.preferred_tsf; | |
278 | else | |
279 | mvmvif->tsf_id = find_first_bit(data.available_tsf_ids, | |
280 | NUM_TSF_IDS); | |
281 | if (mvmvif->tsf_id == NUM_TSF_IDS) { | |
282 | IWL_ERR(mvm, "Failed to init MAC context - no free TSF!\n"); | |
283 | ret = -EIO; | |
284 | goto exit_fail; | |
285 | } | |
286 | ||
287 | mvmvif->color = 0; | |
288 | ||
289 | /* No need to allocate data queues to P2P Device MAC.*/ | |
290 | if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { | |
291 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
292 | vif->hw_queue[ac] = IEEE80211_INVAL_HW_QUEUE; | |
293 | ||
294 | return 0; | |
295 | } | |
296 | ||
297 | /* Find available queues, and allocate them to the ACs */ | |
298 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { | |
299 | u8 queue = find_first_zero_bit(data.used_hw_queues, | |
300 | IWL_MVM_FIRST_AGG_QUEUE); | |
301 | ||
302 | if (queue >= IWL_MVM_FIRST_AGG_QUEUE) { | |
303 | IWL_ERR(mvm, "Failed to allocate queue\n"); | |
304 | ret = -EIO; | |
305 | goto exit_fail; | |
306 | } | |
307 | ||
308 | __set_bit(queue, data.used_hw_queues); | |
309 | vif->hw_queue[ac] = queue; | |
310 | } | |
311 | ||
312 | /* Allocate the CAB queue for softAP and GO interfaces */ | |
313 | if (vif->type == NL80211_IFTYPE_AP) { | |
314 | u8 queue = find_first_zero_bit(data.used_hw_queues, | |
315 | IWL_MVM_FIRST_AGG_QUEUE); | |
316 | ||
317 | if (queue >= IWL_MVM_FIRST_AGG_QUEUE) { | |
318 | IWL_ERR(mvm, "Failed to allocate cab queue\n"); | |
319 | ret = -EIO; | |
320 | goto exit_fail; | |
321 | } | |
322 | ||
323 | vif->cab_queue = queue; | |
324 | } else { | |
325 | vif->cab_queue = IEEE80211_INVAL_HW_QUEUE; | |
326 | } | |
327 | ||
328 | mvmvif->bcast_sta.sta_id = IWL_MVM_STATION_COUNT; | |
329 | mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT; | |
330 | ||
331 | INIT_LIST_HEAD(&mvmvif->time_event_data.list); | |
332 | mvmvif->time_event_data.id = TE_MAX; | |
333 | ||
334 | return 0; | |
335 | ||
336 | exit_fail: | |
337 | memset(mvmvif, 0, sizeof(struct iwl_mvm_vif)); | |
338 | memset(vif->hw_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(vif->hw_queue)); | |
339 | vif->cab_queue = IEEE80211_INVAL_HW_QUEUE; | |
340 | return ret; | |
341 | } | |
342 | ||
343 | int iwl_mvm_mac_ctxt_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
344 | { | |
345 | u32 ac; | |
346 | int ret; | |
347 | ||
348 | lockdep_assert_held(&mvm->mutex); | |
349 | ||
350 | ret = iwl_mvm_mac_ctxt_allocate_resources(mvm, vif); | |
351 | if (ret) | |
352 | return ret; | |
353 | ||
354 | switch (vif->type) { | |
355 | case NL80211_IFTYPE_P2P_DEVICE: | |
356 | iwl_trans_ac_txq_enable(mvm->trans, IWL_MVM_OFFCHANNEL_QUEUE, | |
357 | IWL_MVM_TX_FIFO_VO); | |
358 | break; | |
359 | case NL80211_IFTYPE_AP: | |
360 | iwl_trans_ac_txq_enable(mvm->trans, vif->cab_queue, | |
361 | IWL_MVM_TX_FIFO_VO); | |
362 | /* fall through */ | |
363 | default: | |
364 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
365 | iwl_trans_ac_txq_enable(mvm->trans, vif->hw_queue[ac], | |
366 | iwl_mvm_ac_to_tx_fifo[ac]); | |
367 | break; | |
368 | } | |
369 | ||
370 | return 0; | |
371 | } | |
372 | ||
373 | void iwl_mvm_mac_ctxt_release(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
374 | { | |
375 | int ac; | |
376 | ||
377 | lockdep_assert_held(&mvm->mutex); | |
378 | ||
379 | switch (vif->type) { | |
380 | case NL80211_IFTYPE_P2P_DEVICE: | |
381 | iwl_trans_txq_disable(mvm->trans, IWL_MVM_OFFCHANNEL_QUEUE); | |
382 | break; | |
383 | case NL80211_IFTYPE_AP: | |
384 | iwl_trans_txq_disable(mvm->trans, vif->cab_queue); | |
385 | /* fall through */ | |
386 | default: | |
387 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
388 | iwl_trans_txq_disable(mvm->trans, vif->hw_queue[ac]); | |
389 | } | |
390 | } | |
391 | ||
392 | static void iwl_mvm_ack_rates(struct iwl_mvm *mvm, | |
393 | struct ieee80211_vif *vif, | |
394 | enum ieee80211_band band, | |
395 | u8 *cck_rates, u8 *ofdm_rates) | |
396 | { | |
397 | struct ieee80211_supported_band *sband; | |
398 | unsigned long basic = vif->bss_conf.basic_rates; | |
399 | int lowest_present_ofdm = 100; | |
400 | int lowest_present_cck = 100; | |
401 | u8 cck = 0; | |
402 | u8 ofdm = 0; | |
403 | int i; | |
404 | ||
405 | sband = mvm->hw->wiphy->bands[band]; | |
406 | ||
407 | for_each_set_bit(i, &basic, BITS_PER_LONG) { | |
408 | int hw = sband->bitrates[i].hw_value; | |
409 | if (hw >= IWL_FIRST_OFDM_RATE) { | |
410 | ofdm |= BIT(hw - IWL_FIRST_OFDM_RATE); | |
411 | if (lowest_present_ofdm > hw) | |
412 | lowest_present_ofdm = hw; | |
413 | } else { | |
414 | BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0); | |
415 | ||
416 | cck |= BIT(hw); | |
417 | if (lowest_present_cck > hw) | |
418 | lowest_present_cck = hw; | |
419 | } | |
420 | } | |
421 | ||
422 | /* | |
423 | * Now we've got the basic rates as bitmaps in the ofdm and cck | |
424 | * variables. This isn't sufficient though, as there might not | |
425 | * be all the right rates in the bitmap. E.g. if the only basic | |
426 | * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps | |
427 | * and 6 Mbps because the 802.11-2007 standard says in 9.6: | |
428 | * | |
429 | * [...] a STA responding to a received frame shall transmit | |
430 | * its Control Response frame [...] at the highest rate in the | |
431 | * BSSBasicRateSet parameter that is less than or equal to the | |
432 | * rate of the immediately previous frame in the frame exchange | |
433 | * sequence ([...]) and that is of the same modulation class | |
434 | * ([...]) as the received frame. If no rate contained in the | |
435 | * BSSBasicRateSet parameter meets these conditions, then the | |
436 | * control frame sent in response to a received frame shall be | |
437 | * transmitted at the highest mandatory rate of the PHY that is | |
438 | * less than or equal to the rate of the received frame, and | |
439 | * that is of the same modulation class as the received frame. | |
440 | * | |
441 | * As a consequence, we need to add all mandatory rates that are | |
442 | * lower than all of the basic rates to these bitmaps. | |
443 | */ | |
444 | ||
445 | if (IWL_RATE_24M_INDEX < lowest_present_ofdm) | |
446 | ofdm |= IWL_RATE_BIT_MSK(24) >> IWL_FIRST_OFDM_RATE; | |
447 | if (IWL_RATE_12M_INDEX < lowest_present_ofdm) | |
448 | ofdm |= IWL_RATE_BIT_MSK(12) >> IWL_FIRST_OFDM_RATE; | |
449 | /* 6M already there or needed so always add */ | |
450 | ofdm |= IWL_RATE_BIT_MSK(6) >> IWL_FIRST_OFDM_RATE; | |
451 | ||
452 | /* | |
453 | * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP. | |
454 | * Note, however: | |
455 | * - if no CCK rates are basic, it must be ERP since there must | |
456 | * be some basic rates at all, so they're OFDM => ERP PHY | |
457 | * (or we're in 5 GHz, and the cck bitmap will never be used) | |
458 | * - if 11M is a basic rate, it must be ERP as well, so add 5.5M | |
459 | * - if 5.5M is basic, 1M and 2M are mandatory | |
460 | * - if 2M is basic, 1M is mandatory | |
461 | * - if 1M is basic, that's the only valid ACK rate. | |
462 | * As a consequence, it's not as complicated as it sounds, just add | |
463 | * any lower rates to the ACK rate bitmap. | |
464 | */ | |
465 | if (IWL_RATE_11M_INDEX < lowest_present_cck) | |
466 | cck |= IWL_RATE_BIT_MSK(11) >> IWL_FIRST_CCK_RATE; | |
467 | if (IWL_RATE_5M_INDEX < lowest_present_cck) | |
468 | cck |= IWL_RATE_BIT_MSK(5) >> IWL_FIRST_CCK_RATE; | |
469 | if (IWL_RATE_2M_INDEX < lowest_present_cck) | |
470 | cck |= IWL_RATE_BIT_MSK(2) >> IWL_FIRST_CCK_RATE; | |
471 | /* 1M already there or needed so always add */ | |
472 | cck |= IWL_RATE_BIT_MSK(1) >> IWL_FIRST_CCK_RATE; | |
473 | ||
474 | *cck_rates = cck; | |
475 | *ofdm_rates = ofdm; | |
476 | } | |
477 | ||
478 | static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm *mvm, | |
479 | struct ieee80211_vif *vif, | |
480 | struct iwl_mac_ctx_cmd *cmd, | |
481 | u32 action) | |
482 | { | |
483 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
484 | struct ieee80211_chanctx_conf *chanctx; | |
485 | u8 cck_ack_rates, ofdm_ack_rates; | |
486 | int i; | |
487 | ||
488 | cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, | |
489 | mvmvif->color)); | |
490 | cmd->action = cpu_to_le32(action); | |
491 | ||
492 | switch (vif->type) { | |
493 | case NL80211_IFTYPE_STATION: | |
494 | if (vif->p2p) | |
495 | cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_STA); | |
496 | else | |
497 | cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_BSS_STA); | |
498 | break; | |
499 | case NL80211_IFTYPE_AP: | |
500 | cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_GO); | |
501 | break; | |
502 | case NL80211_IFTYPE_MONITOR: | |
503 | cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_LISTENER); | |
504 | break; | |
505 | case NL80211_IFTYPE_P2P_DEVICE: | |
506 | cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_DEVICE); | |
507 | break; | |
508 | case NL80211_IFTYPE_ADHOC: | |
509 | cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_IBSS); | |
510 | break; | |
511 | default: | |
512 | WARN_ON_ONCE(1); | |
513 | } | |
514 | ||
515 | cmd->tsf_id = cpu_to_le32(mvmvif->tsf_id); | |
516 | ||
517 | memcpy(cmd->node_addr, vif->addr, ETH_ALEN); | |
518 | if (vif->bss_conf.bssid) | |
519 | memcpy(cmd->bssid_addr, vif->bss_conf.bssid, ETH_ALEN); | |
520 | else | |
521 | eth_broadcast_addr(cmd->bssid_addr); | |
522 | ||
523 | rcu_read_lock(); | |
524 | chanctx = rcu_dereference(vif->chanctx_conf); | |
525 | iwl_mvm_ack_rates(mvm, vif, chanctx ? chanctx->def.chan->band | |
526 | : IEEE80211_BAND_2GHZ, | |
527 | &cck_ack_rates, &ofdm_ack_rates); | |
528 | rcu_read_unlock(); | |
529 | ||
530 | cmd->cck_rates = cpu_to_le32((u32)cck_ack_rates); | |
531 | cmd->ofdm_rates = cpu_to_le32((u32)ofdm_ack_rates); | |
532 | ||
533 | cmd->cck_short_preamble = | |
534 | cpu_to_le32(vif->bss_conf.use_short_preamble ? | |
535 | MAC_FLG_SHORT_PREAMBLE : 0); | |
536 | cmd->short_slot = | |
537 | cpu_to_le32(vif->bss_conf.use_short_slot ? | |
538 | MAC_FLG_SHORT_SLOT : 0); | |
539 | ||
540 | for (i = 0; i < AC_NUM; i++) { | |
541 | cmd->ac[i].cw_min = cpu_to_le16(mvmvif->queue_params[i].cw_min); | |
542 | cmd->ac[i].cw_max = cpu_to_le16(mvmvif->queue_params[i].cw_max); | |
543 | cmd->ac[i].aifsn = mvmvif->queue_params[i].aifs; | |
544 | cmd->ac[i].edca_txop = | |
545 | cpu_to_le16(mvmvif->queue_params[i].txop * 32); | |
546 | cmd->ac[i].fifos_mask = BIT(iwl_mvm_ac_to_tx_fifo[i]); | |
547 | } | |
548 | ||
549 | if (vif->bss_conf.qos) | |
550 | cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA); | |
551 | ||
552 | if (vif->bss_conf.use_cts_prot) | |
553 | cmd->protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT | | |
554 | MAC_PROT_FLG_SELF_CTS_EN); | |
555 | ||
556 | /* | |
557 | * I think that we should enable these 2 flags regardless the HT PROT | |
558 | * fields in the HT IE, but I am not sure. Someone knows whom to ask?... | |
559 | */ | |
560 | if (vif->bss_conf.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) { | |
561 | cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_TGN); | |
562 | cmd->protection_flags |= cpu_to_le32(MAC_PROT_FLG_HT_PROT | | |
563 | MAC_PROT_FLG_FAT_PROT); | |
564 | } | |
565 | ||
566 | cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP); | |
567 | } | |
568 | ||
569 | static int iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm *mvm, | |
570 | struct iwl_mac_ctx_cmd *cmd) | |
571 | { | |
572 | int ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, CMD_SYNC, | |
573 | sizeof(*cmd), cmd); | |
574 | if (ret) | |
575 | IWL_ERR(mvm, "Failed to send MAC context (action:%d): %d\n", | |
576 | le32_to_cpu(cmd->action), ret); | |
577 | return ret; | |
578 | } | |
579 | ||
580 | /* | |
581 | * Fill the specific data for mac context of type station or p2p client | |
582 | */ | |
583 | static void iwl_mvm_mac_ctxt_cmd_fill_sta(struct iwl_mvm *mvm, | |
584 | struct ieee80211_vif *vif, | |
585 | struct iwl_mac_data_sta *ctxt_sta) | |
586 | { | |
587 | /* We need the dtim_period to set the MAC as associated */ | |
588 | if (vif->bss_conf.assoc && vif->bss_conf.dtim_period) { | |
589 | u32 dtim_offs; | |
590 | ||
591 | /* | |
592 | * The DTIM count counts down, so when it is N that means N | |
593 | * more beacon intervals happen until the DTIM TBTT. Therefore | |
594 | * add this to the current time. If that ends up being in the | |
595 | * future, the firmware will handle it. | |
596 | * | |
597 | * Also note that the system_timestamp (which we get here as | |
598 | * "sync_device_ts") and TSF timestamp aren't at exactly the | |
599 | * same offset in the frame -- the TSF is at the first symbol | |
600 | * of the TSF, the system timestamp is at signal acquisition | |
601 | * time. This means there's an offset between them of at most | |
602 | * a few hundred microseconds (24 * 8 bits + PLCP time gives | |
603 | * 384us in the longest case), this is currently not relevant | |
604 | * as the firmware wakes up around 2ms before the TBTT. | |
605 | */ | |
606 | dtim_offs = vif->bss_conf.sync_dtim_count * | |
607 | vif->bss_conf.beacon_int; | |
608 | /* convert TU to usecs */ | |
609 | dtim_offs *= 1024; | |
610 | ||
611 | ctxt_sta->dtim_tsf = | |
612 | cpu_to_le64(vif->bss_conf.sync_tsf + dtim_offs); | |
613 | ctxt_sta->dtim_time = | |
614 | cpu_to_le32(vif->bss_conf.sync_device_ts + dtim_offs); | |
615 | ||
616 | IWL_DEBUG_INFO(mvm, "DTIM TBTT is 0x%llx/0x%x, offset %d\n", | |
617 | le64_to_cpu(ctxt_sta->dtim_tsf), | |
618 | le32_to_cpu(ctxt_sta->dtim_time), | |
619 | dtim_offs); | |
620 | ||
621 | ctxt_sta->is_assoc = cpu_to_le32(1); | |
622 | } else { | |
623 | ctxt_sta->is_assoc = cpu_to_le32(0); | |
624 | } | |
625 | ||
626 | ctxt_sta->bi = cpu_to_le32(vif->bss_conf.beacon_int); | |
627 | ctxt_sta->bi_reciprocal = | |
628 | cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int)); | |
629 | ctxt_sta->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int * | |
630 | vif->bss_conf.dtim_period); | |
631 | ctxt_sta->dtim_reciprocal = | |
632 | cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int * | |
633 | vif->bss_conf.dtim_period)); | |
634 | ||
635 | ctxt_sta->listen_interval = cpu_to_le32(mvm->hw->conf.listen_interval); | |
636 | ctxt_sta->assoc_id = cpu_to_le32(vif->bss_conf.aid); | |
637 | } | |
638 | ||
639 | static int iwl_mvm_mac_ctxt_cmd_station(struct iwl_mvm *mvm, | |
640 | struct ieee80211_vif *vif, | |
641 | u32 action) | |
642 | { | |
643 | struct iwl_mac_ctx_cmd cmd = {}; | |
644 | ||
645 | WARN_ON(vif->type != NL80211_IFTYPE_STATION || vif->p2p); | |
646 | ||
647 | /* Fill the common data for all mac context types */ | |
648 | iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action); | |
649 | ||
650 | /* Fill the data specific for station mode */ | |
651 | iwl_mvm_mac_ctxt_cmd_fill_sta(mvm, vif, &cmd.sta); | |
652 | ||
653 | return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); | |
654 | } | |
655 | ||
656 | static int iwl_mvm_mac_ctxt_cmd_p2p_client(struct iwl_mvm *mvm, | |
657 | struct ieee80211_vif *vif, | |
658 | u32 action) | |
659 | { | |
660 | struct iwl_mac_ctx_cmd cmd = {}; | |
661 | ||
662 | WARN_ON(vif->type != NL80211_IFTYPE_STATION || !vif->p2p); | |
663 | ||
664 | /* Fill the common data for all mac context types */ | |
665 | iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action); | |
666 | ||
667 | /* Fill the data specific for station mode */ | |
668 | iwl_mvm_mac_ctxt_cmd_fill_sta(mvm, vif, &cmd.p2p_sta.sta); | |
669 | ||
670 | cmd.p2p_sta.ctwin = cpu_to_le32(vif->bss_conf.p2p_ctwindow); | |
671 | ||
672 | return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); | |
673 | } | |
674 | ||
675 | static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm *mvm, | |
676 | struct ieee80211_vif *vif, | |
677 | u32 action) | |
678 | { | |
679 | struct iwl_mac_ctx_cmd cmd = {}; | |
680 | ||
681 | WARN_ON(vif->type != NL80211_IFTYPE_MONITOR); | |
682 | ||
683 | iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action); | |
684 | /* No other data to be filled */ | |
685 | return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); | |
686 | } | |
687 | ||
688 | struct iwl_mvm_go_iterator_data { | |
689 | bool go_active; | |
690 | }; | |
691 | ||
692 | static void iwl_mvm_go_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif) | |
693 | { | |
694 | struct iwl_mvm_go_iterator_data *data = _data; | |
695 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
696 | ||
697 | if (vif->type == NL80211_IFTYPE_AP && vif->p2p && mvmvif->ap_active) | |
698 | data->go_active = true; | |
699 | } | |
700 | ||
701 | static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm *mvm, | |
702 | struct ieee80211_vif *vif, | |
703 | u32 action) | |
704 | { | |
705 | struct iwl_mac_ctx_cmd cmd = {}; | |
706 | struct iwl_mvm_go_iterator_data data = {}; | |
707 | ||
708 | WARN_ON(vif->type != NL80211_IFTYPE_P2P_DEVICE); | |
709 | ||
710 | iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action); | |
711 | ||
712 | cmd.protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT); | |
713 | cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROMISC); | |
714 | ||
715 | /* | |
716 | * This flag should be set to true when the P2P Device is | |
717 | * discoverable and there is at least another active P2P GO. Settings | |
718 | * this flag will allow the P2P Device to be discoverable on other | |
719 | * channels in addition to its listen channel. | |
720 | * Note that this flag should not be set in other cases as it opens the | |
721 | * Rx filters on all MAC and increases the number of interrupts. | |
722 | */ | |
723 | ieee80211_iterate_active_interfaces_atomic( | |
724 | mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, | |
725 | iwl_mvm_go_iterator, &data); | |
726 | ||
727 | cmd.p2p_dev.is_disc_extended = cpu_to_le32(data.go_active ? 1 : 0); | |
728 | return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); | |
729 | } | |
730 | ||
731 | static void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm *mvm, | |
732 | struct iwl_mac_beacon_cmd *beacon_cmd, | |
733 | u8 *beacon, u32 frame_size) | |
734 | { | |
735 | u32 tim_idx; | |
736 | struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon; | |
737 | ||
738 | /* The index is relative to frame start but we start looking at the | |
739 | * variable-length part of the beacon. */ | |
740 | tim_idx = mgmt->u.beacon.variable - beacon; | |
741 | ||
742 | /* Parse variable-length elements of beacon to find WLAN_EID_TIM */ | |
743 | while ((tim_idx < (frame_size - 2)) && | |
744 | (beacon[tim_idx] != WLAN_EID_TIM)) | |
745 | tim_idx += beacon[tim_idx+1] + 2; | |
746 | ||
747 | /* If TIM field was found, set variables */ | |
748 | if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) { | |
749 | beacon_cmd->tim_idx = cpu_to_le32(tim_idx); | |
750 | beacon_cmd->tim_size = cpu_to_le32((u32)beacon[tim_idx+1]); | |
751 | } else { | |
752 | IWL_WARN(mvm, "Unable to find TIM Element in beacon\n"); | |
753 | } | |
754 | } | |
755 | ||
756 | static int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm, | |
757 | struct ieee80211_vif *vif, | |
758 | struct sk_buff *beacon) | |
759 | { | |
760 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
761 | struct iwl_host_cmd cmd = { | |
762 | .id = BEACON_TEMPLATE_CMD, | |
763 | .flags = CMD_ASYNC, | |
764 | }; | |
765 | struct iwl_mac_beacon_cmd beacon_cmd = {}; | |
766 | struct ieee80211_tx_info *info; | |
767 | u32 beacon_skb_len; | |
768 | u32 rate; | |
769 | ||
770 | if (WARN_ON(!beacon)) | |
771 | return -EINVAL; | |
772 | ||
773 | beacon_skb_len = beacon->len; | |
774 | ||
775 | /* TODO: for now the beacon template id is set to be the mac context id. | |
776 | * Might be better to handle it as another resource ... */ | |
777 | beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id); | |
778 | ||
779 | /* Set up TX command fields */ | |
780 | beacon_cmd.tx.len = cpu_to_le16((u16)beacon_skb_len); | |
781 | beacon_cmd.tx.sta_id = mvmvif->bcast_sta.sta_id; | |
782 | beacon_cmd.tx.life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE); | |
783 | beacon_cmd.tx.tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | | |
784 | TX_CMD_FLG_BT_DIS | | |
785 | TX_CMD_FLG_TSF); | |
786 | ||
787 | mvm->mgmt_last_antenna_idx = | |
788 | iwl_mvm_next_antenna(mvm, mvm->nvm_data->valid_tx_ant, | |
789 | mvm->mgmt_last_antenna_idx); | |
790 | ||
791 | beacon_cmd.tx.rate_n_flags = | |
792 | cpu_to_le32(BIT(mvm->mgmt_last_antenna_idx) << | |
793 | RATE_MCS_ANT_POS); | |
794 | ||
795 | info = IEEE80211_SKB_CB(beacon); | |
796 | ||
797 | if (info->band == IEEE80211_BAND_5GHZ || vif->p2p) { | |
798 | rate = IWL_FIRST_OFDM_RATE; | |
799 | } else { | |
800 | rate = IWL_FIRST_CCK_RATE; | |
801 | beacon_cmd.tx.rate_n_flags |= cpu_to_le32(RATE_MCS_CCK_MSK); | |
802 | } | |
803 | beacon_cmd.tx.rate_n_flags |= | |
804 | cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(rate)); | |
805 | ||
806 | /* Set up TX beacon command fields */ | |
807 | iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd, | |
808 | beacon->data, | |
809 | beacon_skb_len); | |
810 | ||
811 | /* Submit command */ | |
812 | cmd.len[0] = sizeof(beacon_cmd); | |
813 | cmd.data[0] = &beacon_cmd; | |
814 | cmd.dataflags[0] = 0; | |
815 | cmd.len[1] = beacon_skb_len; | |
816 | cmd.data[1] = beacon->data; | |
817 | cmd.dataflags[1] = IWL_HCMD_DFL_DUP; | |
818 | ||
819 | return iwl_mvm_send_cmd(mvm, &cmd); | |
820 | } | |
821 | ||
822 | /* The beacon template for the AP/GO context has changed and needs update */ | |
823 | int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm *mvm, | |
824 | struct ieee80211_vif *vif) | |
825 | { | |
826 | struct sk_buff *beacon; | |
827 | int ret; | |
828 | ||
829 | WARN_ON(vif->type != NL80211_IFTYPE_AP); | |
830 | ||
831 | beacon = ieee80211_beacon_get(mvm->hw, vif); | |
832 | if (!beacon) | |
833 | return -ENOMEM; | |
834 | ||
835 | ret = iwl_mvm_mac_ctxt_send_beacon(mvm, vif, beacon); | |
836 | dev_kfree_skb(beacon); | |
837 | return ret; | |
838 | } | |
839 | ||
840 | /* | |
841 | * Fill the specific data for mac context of type AP of P2P GO | |
842 | */ | |
843 | static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm *mvm, | |
844 | struct ieee80211_vif *vif, | |
845 | struct iwl_mac_data_ap *ctxt_ap) | |
846 | { | |
847 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
848 | u32 curr_dev_time; | |
849 | ||
850 | ctxt_ap->bi = cpu_to_le32(vif->bss_conf.beacon_int); | |
851 | ctxt_ap->bi_reciprocal = | |
852 | cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int)); | |
853 | ctxt_ap->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int * | |
854 | vif->bss_conf.dtim_period); | |
855 | ctxt_ap->dtim_reciprocal = | |
856 | cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int * | |
857 | vif->bss_conf.dtim_period)); | |
858 | ||
859 | ctxt_ap->mcast_qid = cpu_to_le32(vif->cab_queue); | |
860 | curr_dev_time = iwl_read_prph(mvm->trans, DEVICE_SYSTEM_TIME_REG); | |
861 | ctxt_ap->beacon_time = cpu_to_le32(curr_dev_time); | |
862 | ||
863 | ctxt_ap->beacon_tsf = cpu_to_le64(curr_dev_time); | |
864 | ||
865 | /* TODO: Assume that the beacon id == mac context id */ | |
866 | ctxt_ap->beacon_template = cpu_to_le32(mvmvif->id); | |
867 | } | |
868 | ||
869 | static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm *mvm, | |
870 | struct ieee80211_vif *vif, | |
871 | u32 action) | |
872 | { | |
873 | struct iwl_mac_ctx_cmd cmd = {}; | |
874 | ||
875 | WARN_ON(vif->type != NL80211_IFTYPE_AP || vif->p2p); | |
876 | ||
877 | /* Fill the common data for all mac context types */ | |
878 | iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action); | |
879 | ||
880 | /* Fill the data specific for ap mode */ | |
881 | iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd.ap); | |
882 | ||
883 | return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); | |
884 | } | |
885 | ||
886 | static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm *mvm, | |
887 | struct ieee80211_vif *vif, | |
888 | u32 action) | |
889 | { | |
890 | struct iwl_mac_ctx_cmd cmd = {}; | |
891 | ||
892 | WARN_ON(vif->type != NL80211_IFTYPE_AP || !vif->p2p); | |
893 | ||
894 | /* Fill the common data for all mac context types */ | |
895 | iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action); | |
896 | ||
897 | /* Fill the data specific for GO mode */ | |
898 | iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd.go.ap); | |
899 | ||
900 | cmd.go.ctwin = cpu_to_le32(vif->bss_conf.p2p_ctwindow); | |
901 | cmd.go.opp_ps_enabled = cpu_to_le32(!!vif->bss_conf.p2p_oppps); | |
902 | ||
903 | return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); | |
904 | } | |
905 | ||
906 | static int iwl_mvm_mac_ctx_send(struct iwl_mvm *mvm, struct ieee80211_vif *vif, | |
907 | u32 action) | |
908 | { | |
909 | switch (vif->type) { | |
910 | case NL80211_IFTYPE_STATION: | |
911 | if (!vif->p2p) | |
912 | return iwl_mvm_mac_ctxt_cmd_station(mvm, vif, | |
913 | action); | |
914 | else | |
915 | return iwl_mvm_mac_ctxt_cmd_p2p_client(mvm, vif, | |
916 | action); | |
917 | break; | |
918 | case NL80211_IFTYPE_AP: | |
919 | if (!vif->p2p) | |
920 | return iwl_mvm_mac_ctxt_cmd_ap(mvm, vif, action); | |
921 | else | |
922 | return iwl_mvm_mac_ctxt_cmd_go(mvm, vif, action); | |
923 | break; | |
924 | case NL80211_IFTYPE_MONITOR: | |
925 | return iwl_mvm_mac_ctxt_cmd_listener(mvm, vif, action); | |
926 | case NL80211_IFTYPE_P2P_DEVICE: | |
927 | return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm, vif, action); | |
928 | default: | |
929 | break; | |
930 | } | |
931 | ||
932 | return -EOPNOTSUPP; | |
933 | } | |
934 | ||
935 | int iwl_mvm_mac_ctxt_add(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
936 | { | |
937 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
938 | int ret; | |
939 | ||
940 | if (WARN_ONCE(mvmvif->uploaded, "Adding active MAC %pM/%d\n", | |
941 | vif->addr, ieee80211_vif_type_p2p(vif))) | |
942 | return -EIO; | |
943 | ||
944 | ret = iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_ADD); | |
945 | if (ret) | |
946 | return ret; | |
947 | ||
948 | mvmvif->uploaded = true; | |
949 | return 0; | |
950 | } | |
951 | ||
952 | int iwl_mvm_mac_ctxt_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
953 | { | |
954 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
955 | ||
956 | if (WARN_ONCE(!mvmvif->uploaded, "Changing inactive MAC %pM/%d\n", | |
957 | vif->addr, ieee80211_vif_type_p2p(vif))) | |
958 | return -EIO; | |
959 | ||
960 | return iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_MODIFY); | |
961 | } | |
962 | ||
963 | int iwl_mvm_mac_ctxt_remove(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
964 | { | |
965 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
966 | struct iwl_mac_ctx_cmd cmd; | |
967 | int ret; | |
968 | ||
969 | if (WARN_ONCE(!mvmvif->uploaded, "Removing inactive MAC %pM/%d\n", | |
970 | vif->addr, ieee80211_vif_type_p2p(vif))) | |
971 | return -EIO; | |
972 | ||
973 | memset(&cmd, 0, sizeof(cmd)); | |
974 | ||
975 | cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, | |
976 | mvmvif->color)); | |
977 | cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE); | |
978 | ||
979 | ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, CMD_SYNC, | |
980 | sizeof(cmd), &cmd); | |
981 | if (ret) { | |
982 | IWL_ERR(mvm, "Failed to remove MAC context: %d\n", ret); | |
983 | return ret; | |
984 | } | |
985 | ||
986 | mvmvif->uploaded = false; | |
987 | return 0; | |
988 | } |