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8ca151b5 JB |
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 | |
410dc5aa | 25 | * in the file called COPYING. |
8ca151b5 JB |
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)]; | |
19e737c9 | 83 | unsigned long used_hw_queues[BITS_TO_LONGS(IWL_MVM_MAX_QUEUES)]; |
8ca151b5 JB |
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 | { | |
837fb69f | 196 | u32 qmask = 0, ac; |
8ca151b5 JB |
197 | |
198 | if (vif->type == NL80211_IFTYPE_P2P_DEVICE) | |
398e8c6c | 199 | return BIT(IWL_MVM_OFFCHANNEL_QUEUE); |
8ca151b5 | 200 | |
8ca151b5 JB |
201 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) |
202 | if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE) | |
203 | qmask |= BIT(vif->hw_queue[ac]); | |
204 | ||
205 | return qmask; | |
206 | } | |
207 | ||
208 | static int iwl_mvm_mac_ctxt_allocate_resources(struct iwl_mvm *mvm, | |
209 | struct ieee80211_vif *vif) | |
210 | { | |
211 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
212 | struct iwl_mvm_mac_iface_iterator_data data = { | |
213 | .mvm = mvm, | |
214 | .vif = vif, | |
215 | .available_mac_ids = { (1 << NUM_MAC_INDEX_DRIVER) - 1 }, | |
216 | .available_tsf_ids = { (1 << NUM_TSF_IDS) - 1 }, | |
217 | /* no preference yet */ | |
218 | .preferred_tsf = NUM_TSF_IDS, | |
219 | .used_hw_queues = { | |
220 | BIT(IWL_MVM_OFFCHANNEL_QUEUE) | | |
19e737c9 | 221 | BIT(mvm->aux_queue) | |
8ca151b5 JB |
222 | BIT(IWL_MVM_CMD_QUEUE) |
223 | }, | |
224 | .found_vif = false, | |
225 | }; | |
226 | u32 ac; | |
9ee718aa | 227 | int ret, i; |
8ca151b5 JB |
228 | |
229 | /* | |
230 | * Allocate a MAC ID and a TSF for this MAC, along with the queues | |
231 | * and other resources. | |
232 | */ | |
233 | ||
234 | /* | |
235 | * Before the iterator, we start with all MAC IDs and TSFs available. | |
236 | * | |
237 | * During iteration, all MAC IDs are cleared that are in use by other | |
238 | * virtual interfaces, and all TSF IDs are cleared that can't be used | |
239 | * by this new virtual interface because they're used by an interface | |
240 | * that can't share it with the new one. | |
241 | * At the same time, we check if there's a preferred TSF in the case | |
242 | * that we should share it with another interface. | |
243 | */ | |
244 | ||
5023d966 JB |
245 | /* Currently, MAC ID 0 should be used only for the managed/IBSS vif */ |
246 | switch (vif->type) { | |
247 | case NL80211_IFTYPE_ADHOC: | |
248 | break; | |
249 | case NL80211_IFTYPE_STATION: | |
250 | if (!vif->p2p) | |
251 | break; | |
252 | /* fall through */ | |
253 | default: | |
ec8b6885 | 254 | __clear_bit(0, data.available_mac_ids); |
5023d966 | 255 | } |
ec8b6885 | 256 | |
8ca151b5 JB |
257 | ieee80211_iterate_active_interfaces_atomic( |
258 | mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, | |
259 | iwl_mvm_mac_iface_iterator, &data); | |
260 | ||
261 | /* | |
262 | * In the case we're getting here during resume, it's similar to | |
263 | * firmware restart, and with RESUME_ALL the iterator will find | |
264 | * the vif being added already. | |
265 | * We don't want to reassign any IDs in either case since doing | |
266 | * so would probably assign different IDs (as interfaces aren't | |
267 | * necessarily added in the same order), but the old IDs were | |
268 | * preserved anyway, so skip ID assignment for both resume and | |
269 | * recovery. | |
270 | */ | |
271 | if (data.found_vif) | |
272 | return 0; | |
273 | ||
274 | /* Therefore, in recovery, we can't get here */ | |
fd11bd05 IP |
275 | if (WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))) |
276 | return -EBUSY; | |
8ca151b5 JB |
277 | |
278 | mvmvif->id = find_first_bit(data.available_mac_ids, | |
279 | NUM_MAC_INDEX_DRIVER); | |
280 | if (mvmvif->id == NUM_MAC_INDEX_DRIVER) { | |
281 | IWL_ERR(mvm, "Failed to init MAC context - no free ID!\n"); | |
282 | ret = -EIO; | |
283 | goto exit_fail; | |
284 | } | |
285 | ||
286 | if (data.preferred_tsf != NUM_TSF_IDS) | |
287 | mvmvif->tsf_id = data.preferred_tsf; | |
288 | else | |
289 | mvmvif->tsf_id = find_first_bit(data.available_tsf_ids, | |
290 | NUM_TSF_IDS); | |
291 | if (mvmvif->tsf_id == NUM_TSF_IDS) { | |
292 | IWL_ERR(mvm, "Failed to init MAC context - no free TSF!\n"); | |
293 | ret = -EIO; | |
294 | goto exit_fail; | |
295 | } | |
296 | ||
297 | mvmvif->color = 0; | |
298 | ||
1e849c93 IP |
299 | INIT_LIST_HEAD(&mvmvif->time_event_data.list); |
300 | mvmvif->time_event_data.id = TE_MAX; | |
301 | ||
8ca151b5 JB |
302 | /* No need to allocate data queues to P2P Device MAC.*/ |
303 | if (vif->type == NL80211_IFTYPE_P2P_DEVICE) { | |
304 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
305 | vif->hw_queue[ac] = IEEE80211_INVAL_HW_QUEUE; | |
306 | ||
307 | return 0; | |
308 | } | |
309 | ||
310 | /* Find available queues, and allocate them to the ACs */ | |
311 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) { | |
312 | u8 queue = find_first_zero_bit(data.used_hw_queues, | |
19e737c9 | 313 | mvm->first_agg_queue); |
8ca151b5 | 314 | |
19e737c9 | 315 | if (queue >= mvm->first_agg_queue) { |
8ca151b5 JB |
316 | IWL_ERR(mvm, "Failed to allocate queue\n"); |
317 | ret = -EIO; | |
318 | goto exit_fail; | |
319 | } | |
320 | ||
321 | __set_bit(queue, data.used_hw_queues); | |
322 | vif->hw_queue[ac] = queue; | |
323 | } | |
324 | ||
325 | /* Allocate the CAB queue for softAP and GO interfaces */ | |
326 | if (vif->type == NL80211_IFTYPE_AP) { | |
327 | u8 queue = find_first_zero_bit(data.used_hw_queues, | |
19e737c9 | 328 | mvm->first_agg_queue); |
8ca151b5 | 329 | |
19e737c9 | 330 | if (queue >= mvm->first_agg_queue) { |
8ca151b5 JB |
331 | IWL_ERR(mvm, "Failed to allocate cab queue\n"); |
332 | ret = -EIO; | |
333 | goto exit_fail; | |
334 | } | |
335 | ||
336 | vif->cab_queue = queue; | |
337 | } else { | |
338 | vif->cab_queue = IEEE80211_INVAL_HW_QUEUE; | |
339 | } | |
340 | ||
341 | mvmvif->bcast_sta.sta_id = IWL_MVM_STATION_COUNT; | |
342 | mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT; | |
343 | ||
9ee718aa EL |
344 | for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) |
345 | mvmvif->smps_requests[i] = IEEE80211_SMPS_AUTOMATIC; | |
346 | ||
8ca151b5 JB |
347 | return 0; |
348 | ||
349 | exit_fail: | |
350 | memset(mvmvif, 0, sizeof(struct iwl_mvm_vif)); | |
351 | memset(vif->hw_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(vif->hw_queue)); | |
352 | vif->cab_queue = IEEE80211_INVAL_HW_QUEUE; | |
353 | return ret; | |
354 | } | |
355 | ||
356 | int iwl_mvm_mac_ctxt_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
357 | { | |
358 | u32 ac; | |
359 | int ret; | |
360 | ||
361 | lockdep_assert_held(&mvm->mutex); | |
362 | ||
363 | ret = iwl_mvm_mac_ctxt_allocate_resources(mvm, vif); | |
364 | if (ret) | |
365 | return ret; | |
366 | ||
367 | switch (vif->type) { | |
368 | case NL80211_IFTYPE_P2P_DEVICE: | |
369 | iwl_trans_ac_txq_enable(mvm->trans, IWL_MVM_OFFCHANNEL_QUEUE, | |
370 | IWL_MVM_TX_FIFO_VO); | |
371 | break; | |
372 | case NL80211_IFTYPE_AP: | |
373 | iwl_trans_ac_txq_enable(mvm->trans, vif->cab_queue, | |
86a91ec7 | 374 | IWL_MVM_TX_FIFO_MCAST); |
8ca151b5 JB |
375 | /* fall through */ |
376 | default: | |
377 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
378 | iwl_trans_ac_txq_enable(mvm->trans, vif->hw_queue[ac], | |
379 | iwl_mvm_ac_to_tx_fifo[ac]); | |
380 | break; | |
381 | } | |
382 | ||
383 | return 0; | |
384 | } | |
385 | ||
386 | void iwl_mvm_mac_ctxt_release(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
387 | { | |
388 | int ac; | |
389 | ||
390 | lockdep_assert_held(&mvm->mutex); | |
391 | ||
392 | switch (vif->type) { | |
393 | case NL80211_IFTYPE_P2P_DEVICE: | |
394 | iwl_trans_txq_disable(mvm->trans, IWL_MVM_OFFCHANNEL_QUEUE); | |
395 | break; | |
396 | case NL80211_IFTYPE_AP: | |
397 | iwl_trans_txq_disable(mvm->trans, vif->cab_queue); | |
398 | /* fall through */ | |
399 | default: | |
400 | for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) | |
401 | iwl_trans_txq_disable(mvm->trans, vif->hw_queue[ac]); | |
402 | } | |
403 | } | |
404 | ||
405 | static void iwl_mvm_ack_rates(struct iwl_mvm *mvm, | |
406 | struct ieee80211_vif *vif, | |
407 | enum ieee80211_band band, | |
408 | u8 *cck_rates, u8 *ofdm_rates) | |
409 | { | |
410 | struct ieee80211_supported_band *sband; | |
411 | unsigned long basic = vif->bss_conf.basic_rates; | |
412 | int lowest_present_ofdm = 100; | |
413 | int lowest_present_cck = 100; | |
414 | u8 cck = 0; | |
415 | u8 ofdm = 0; | |
416 | int i; | |
417 | ||
418 | sband = mvm->hw->wiphy->bands[band]; | |
419 | ||
420 | for_each_set_bit(i, &basic, BITS_PER_LONG) { | |
421 | int hw = sband->bitrates[i].hw_value; | |
422 | if (hw >= IWL_FIRST_OFDM_RATE) { | |
423 | ofdm |= BIT(hw - IWL_FIRST_OFDM_RATE); | |
424 | if (lowest_present_ofdm > hw) | |
425 | lowest_present_ofdm = hw; | |
426 | } else { | |
427 | BUILD_BUG_ON(IWL_FIRST_CCK_RATE != 0); | |
428 | ||
429 | cck |= BIT(hw); | |
430 | if (lowest_present_cck > hw) | |
431 | lowest_present_cck = hw; | |
432 | } | |
433 | } | |
434 | ||
435 | /* | |
436 | * Now we've got the basic rates as bitmaps in the ofdm and cck | |
437 | * variables. This isn't sufficient though, as there might not | |
438 | * be all the right rates in the bitmap. E.g. if the only basic | |
439 | * rates are 5.5 Mbps and 11 Mbps, we still need to add 1 Mbps | |
440 | * and 6 Mbps because the 802.11-2007 standard says in 9.6: | |
441 | * | |
442 | * [...] a STA responding to a received frame shall transmit | |
443 | * its Control Response frame [...] at the highest rate in the | |
444 | * BSSBasicRateSet parameter that is less than or equal to the | |
445 | * rate of the immediately previous frame in the frame exchange | |
446 | * sequence ([...]) and that is of the same modulation class | |
447 | * ([...]) as the received frame. If no rate contained in the | |
448 | * BSSBasicRateSet parameter meets these conditions, then the | |
449 | * control frame sent in response to a received frame shall be | |
450 | * transmitted at the highest mandatory rate of the PHY that is | |
451 | * less than or equal to the rate of the received frame, and | |
452 | * that is of the same modulation class as the received frame. | |
453 | * | |
454 | * As a consequence, we need to add all mandatory rates that are | |
455 | * lower than all of the basic rates to these bitmaps. | |
456 | */ | |
457 | ||
458 | if (IWL_RATE_24M_INDEX < lowest_present_ofdm) | |
459 | ofdm |= IWL_RATE_BIT_MSK(24) >> IWL_FIRST_OFDM_RATE; | |
460 | if (IWL_RATE_12M_INDEX < lowest_present_ofdm) | |
461 | ofdm |= IWL_RATE_BIT_MSK(12) >> IWL_FIRST_OFDM_RATE; | |
462 | /* 6M already there or needed so always add */ | |
463 | ofdm |= IWL_RATE_BIT_MSK(6) >> IWL_FIRST_OFDM_RATE; | |
464 | ||
465 | /* | |
466 | * CCK is a bit more complex with DSSS vs. HR/DSSS vs. ERP. | |
467 | * Note, however: | |
468 | * - if no CCK rates are basic, it must be ERP since there must | |
469 | * be some basic rates at all, so they're OFDM => ERP PHY | |
470 | * (or we're in 5 GHz, and the cck bitmap will never be used) | |
471 | * - if 11M is a basic rate, it must be ERP as well, so add 5.5M | |
472 | * - if 5.5M is basic, 1M and 2M are mandatory | |
473 | * - if 2M is basic, 1M is mandatory | |
474 | * - if 1M is basic, that's the only valid ACK rate. | |
475 | * As a consequence, it's not as complicated as it sounds, just add | |
476 | * any lower rates to the ACK rate bitmap. | |
477 | */ | |
478 | if (IWL_RATE_11M_INDEX < lowest_present_cck) | |
479 | cck |= IWL_RATE_BIT_MSK(11) >> IWL_FIRST_CCK_RATE; | |
480 | if (IWL_RATE_5M_INDEX < lowest_present_cck) | |
481 | cck |= IWL_RATE_BIT_MSK(5) >> IWL_FIRST_CCK_RATE; | |
482 | if (IWL_RATE_2M_INDEX < lowest_present_cck) | |
483 | cck |= IWL_RATE_BIT_MSK(2) >> IWL_FIRST_CCK_RATE; | |
484 | /* 1M already there or needed so always add */ | |
485 | cck |= IWL_RATE_BIT_MSK(1) >> IWL_FIRST_CCK_RATE; | |
486 | ||
487 | *cck_rates = cck; | |
488 | *ofdm_rates = ofdm; | |
489 | } | |
490 | ||
491 | static void iwl_mvm_mac_ctxt_cmd_common(struct iwl_mvm *mvm, | |
492 | struct ieee80211_vif *vif, | |
493 | struct iwl_mac_ctx_cmd *cmd, | |
494 | u32 action) | |
495 | { | |
496 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
497 | struct ieee80211_chanctx_conf *chanctx; | |
498 | u8 cck_ack_rates, ofdm_ack_rates; | |
499 | int i; | |
500 | ||
501 | cmd->id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, | |
502 | mvmvif->color)); | |
503 | cmd->action = cpu_to_le32(action); | |
504 | ||
505 | switch (vif->type) { | |
506 | case NL80211_IFTYPE_STATION: | |
507 | if (vif->p2p) | |
508 | cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_STA); | |
509 | else | |
510 | cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_BSS_STA); | |
511 | break; | |
512 | case NL80211_IFTYPE_AP: | |
513 | cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_GO); | |
514 | break; | |
515 | case NL80211_IFTYPE_MONITOR: | |
516 | cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_LISTENER); | |
517 | break; | |
518 | case NL80211_IFTYPE_P2P_DEVICE: | |
519 | cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_P2P_DEVICE); | |
520 | break; | |
521 | case NL80211_IFTYPE_ADHOC: | |
522 | cmd->mac_type = cpu_to_le32(FW_MAC_TYPE_IBSS); | |
523 | break; | |
524 | default: | |
525 | WARN_ON_ONCE(1); | |
526 | } | |
527 | ||
528 | cmd->tsf_id = cpu_to_le32(mvmvif->tsf_id); | |
529 | ||
530 | memcpy(cmd->node_addr, vif->addr, ETH_ALEN); | |
531 | if (vif->bss_conf.bssid) | |
532 | memcpy(cmd->bssid_addr, vif->bss_conf.bssid, ETH_ALEN); | |
533 | else | |
534 | eth_broadcast_addr(cmd->bssid_addr); | |
535 | ||
536 | rcu_read_lock(); | |
537 | chanctx = rcu_dereference(vif->chanctx_conf); | |
538 | iwl_mvm_ack_rates(mvm, vif, chanctx ? chanctx->def.chan->band | |
539 | : IEEE80211_BAND_2GHZ, | |
540 | &cck_ack_rates, &ofdm_ack_rates); | |
541 | rcu_read_unlock(); | |
542 | ||
543 | cmd->cck_rates = cpu_to_le32((u32)cck_ack_rates); | |
544 | cmd->ofdm_rates = cpu_to_le32((u32)ofdm_ack_rates); | |
545 | ||
546 | cmd->cck_short_preamble = | |
547 | cpu_to_le32(vif->bss_conf.use_short_preamble ? | |
548 | MAC_FLG_SHORT_PREAMBLE : 0); | |
549 | cmd->short_slot = | |
550 | cpu_to_le32(vif->bss_conf.use_short_slot ? | |
551 | MAC_FLG_SHORT_SLOT : 0); | |
552 | ||
553 | for (i = 0; i < AC_NUM; i++) { | |
554 | cmd->ac[i].cw_min = cpu_to_le16(mvmvif->queue_params[i].cw_min); | |
555 | cmd->ac[i].cw_max = cpu_to_le16(mvmvif->queue_params[i].cw_max); | |
556 | cmd->ac[i].aifsn = mvmvif->queue_params[i].aifs; | |
557 | cmd->ac[i].edca_txop = | |
558 | cpu_to_le16(mvmvif->queue_params[i].txop * 32); | |
559 | cmd->ac[i].fifos_mask = BIT(iwl_mvm_ac_to_tx_fifo[i]); | |
560 | } | |
561 | ||
86a91ec7 EG |
562 | /* in AP mode, the MCAST FIFO takes the EDCA params from VO */ |
563 | if (vif->type == NL80211_IFTYPE_AP) | |
564 | cmd->ac[AC_VO].fifos_mask |= BIT(IWL_MVM_TX_FIFO_MCAST); | |
565 | ||
8ca151b5 JB |
566 | if (vif->bss_conf.qos) |
567 | cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_UPDATE_EDCA); | |
568 | ||
cc7ee2ba | 569 | /* Don't use cts to self as the fw doesn't support it currently. */ |
2e0cc865 | 570 | if (vif->bss_conf.use_cts_prot) { |
cc7ee2ba | 571 | cmd->protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT); |
2e0cc865 EG |
572 | if (IWL_UCODE_API(mvm->fw->ucode_ver) >= 8) |
573 | cmd->protection_flags |= | |
574 | cpu_to_le32(MAC_PROT_FLG_SELF_CTS_EN); | |
575 | } | |
8ca151b5 JB |
576 | |
577 | /* | |
578 | * I think that we should enable these 2 flags regardless the HT PROT | |
579 | * fields in the HT IE, but I am not sure. Someone knows whom to ask?... | |
580 | */ | |
581 | if (vif->bss_conf.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) { | |
582 | cmd->qos_flags |= cpu_to_le32(MAC_QOS_FLG_TGN); | |
583 | cmd->protection_flags |= cpu_to_le32(MAC_PROT_FLG_HT_PROT | | |
584 | MAC_PROT_FLG_FAT_PROT); | |
585 | } | |
586 | ||
587 | cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP); | |
588 | } | |
589 | ||
590 | static int iwl_mvm_mac_ctxt_send_cmd(struct iwl_mvm *mvm, | |
591 | struct iwl_mac_ctx_cmd *cmd) | |
592 | { | |
593 | int ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, CMD_SYNC, | |
594 | sizeof(*cmd), cmd); | |
595 | if (ret) | |
596 | IWL_ERR(mvm, "Failed to send MAC context (action:%d): %d\n", | |
597 | le32_to_cpu(cmd->action), ret); | |
598 | return ret; | |
599 | } | |
600 | ||
601 | /* | |
602 | * Fill the specific data for mac context of type station or p2p client | |
603 | */ | |
604 | static void iwl_mvm_mac_ctxt_cmd_fill_sta(struct iwl_mvm *mvm, | |
605 | struct ieee80211_vif *vif, | |
ba283927 AB |
606 | struct iwl_mac_data_sta *ctxt_sta, |
607 | bool force_assoc_off) | |
8ca151b5 | 608 | { |
210a544e | 609 | /* We need the dtim_period to set the MAC as associated */ |
ba283927 AB |
610 | if (vif->bss_conf.assoc && vif->bss_conf.dtim_period && |
611 | !force_assoc_off) { | |
d2931bbd JB |
612 | u32 dtim_offs; |
613 | ||
614 | /* | |
615 | * The DTIM count counts down, so when it is N that means N | |
616 | * more beacon intervals happen until the DTIM TBTT. Therefore | |
617 | * add this to the current time. If that ends up being in the | |
618 | * future, the firmware will handle it. | |
619 | * | |
620 | * Also note that the system_timestamp (which we get here as | |
621 | * "sync_device_ts") and TSF timestamp aren't at exactly the | |
622 | * same offset in the frame -- the TSF is at the first symbol | |
623 | * of the TSF, the system timestamp is at signal acquisition | |
624 | * time. This means there's an offset between them of at most | |
625 | * a few hundred microseconds (24 * 8 bits + PLCP time gives | |
626 | * 384us in the longest case), this is currently not relevant | |
627 | * as the firmware wakes up around 2ms before the TBTT. | |
628 | */ | |
629 | dtim_offs = vif->bss_conf.sync_dtim_count * | |
630 | vif->bss_conf.beacon_int; | |
631 | /* convert TU to usecs */ | |
632 | dtim_offs *= 1024; | |
633 | ||
634 | ctxt_sta->dtim_tsf = | |
635 | cpu_to_le64(vif->bss_conf.sync_tsf + dtim_offs); | |
636 | ctxt_sta->dtim_time = | |
637 | cpu_to_le32(vif->bss_conf.sync_device_ts + dtim_offs); | |
638 | ||
639 | IWL_DEBUG_INFO(mvm, "DTIM TBTT is 0x%llx/0x%x, offset %d\n", | |
640 | le64_to_cpu(ctxt_sta->dtim_tsf), | |
641 | le32_to_cpu(ctxt_sta->dtim_time), | |
642 | dtim_offs); | |
643 | ||
210a544e | 644 | ctxt_sta->is_assoc = cpu_to_le32(1); |
d2931bbd | 645 | } else { |
210a544e | 646 | ctxt_sta->is_assoc = cpu_to_le32(0); |
d2931bbd | 647 | } |
8ca151b5 JB |
648 | |
649 | ctxt_sta->bi = cpu_to_le32(vif->bss_conf.beacon_int); | |
650 | ctxt_sta->bi_reciprocal = | |
651 | cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int)); | |
652 | ctxt_sta->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int * | |
653 | vif->bss_conf.dtim_period); | |
654 | ctxt_sta->dtim_reciprocal = | |
655 | cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int * | |
656 | vif->bss_conf.dtim_period)); | |
657 | ||
658 | ctxt_sta->listen_interval = cpu_to_le32(mvm->hw->conf.listen_interval); | |
659 | ctxt_sta->assoc_id = cpu_to_le32(vif->bss_conf.aid); | |
660 | } | |
661 | ||
662 | static int iwl_mvm_mac_ctxt_cmd_station(struct iwl_mvm *mvm, | |
663 | struct ieee80211_vif *vif, | |
664 | u32 action) | |
665 | { | |
666 | struct iwl_mac_ctx_cmd cmd = {}; | |
667 | ||
668 | WARN_ON(vif->type != NL80211_IFTYPE_STATION || vif->p2p); | |
669 | ||
670 | /* Fill the common data for all mac context types */ | |
671 | iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action); | |
672 | ||
1dcd15ee IP |
673 | /* Allow beacons to pass through as long as we are not associated,or we |
674 | * do not have dtim period information */ | |
675 | if (!vif->bss_conf.assoc || !vif->bss_conf.dtim_period) | |
676 | cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_BEACON); | |
677 | else | |
678 | cmd.filter_flags &= ~cpu_to_le32(MAC_FILTER_IN_BEACON); | |
679 | ||
8ca151b5 | 680 | /* Fill the data specific for station mode */ |
ba283927 AB |
681 | iwl_mvm_mac_ctxt_cmd_fill_sta(mvm, vif, &cmd.sta, |
682 | action == FW_CTXT_ACTION_ADD); | |
8ca151b5 JB |
683 | |
684 | return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); | |
685 | } | |
686 | ||
687 | static int iwl_mvm_mac_ctxt_cmd_p2p_client(struct iwl_mvm *mvm, | |
688 | struct ieee80211_vif *vif, | |
689 | u32 action) | |
690 | { | |
691 | struct iwl_mac_ctx_cmd cmd = {}; | |
67baf663 | 692 | struct ieee80211_p2p_noa_attr *noa = &vif->bss_conf.p2p_noa_attr; |
8ca151b5 JB |
693 | |
694 | WARN_ON(vif->type != NL80211_IFTYPE_STATION || !vif->p2p); | |
695 | ||
696 | /* Fill the common data for all mac context types */ | |
697 | iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action); | |
698 | ||
699 | /* Fill the data specific for station mode */ | |
ba283927 AB |
700 | iwl_mvm_mac_ctxt_cmd_fill_sta(mvm, vif, &cmd.p2p_sta.sta, |
701 | action == FW_CTXT_ACTION_ADD); | |
8ca151b5 | 702 | |
67baf663 JD |
703 | cmd.p2p_sta.ctwin = cpu_to_le32(noa->oppps_ctwindow & |
704 | IEEE80211_P2P_OPPPS_CTWINDOW_MASK); | |
8ca151b5 JB |
705 | |
706 | return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); | |
707 | } | |
708 | ||
709 | static int iwl_mvm_mac_ctxt_cmd_listener(struct iwl_mvm *mvm, | |
710 | struct ieee80211_vif *vif, | |
711 | u32 action) | |
712 | { | |
713 | struct iwl_mac_ctx_cmd cmd = {}; | |
714 | ||
715 | WARN_ON(vif->type != NL80211_IFTYPE_MONITOR); | |
716 | ||
717 | iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action); | |
53585495 JB |
718 | |
719 | cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROMISC | | |
720 | MAC_FILTER_IN_CONTROL_AND_MGMT | | |
721 | MAC_FILTER_IN_BEACON | | |
722 | MAC_FILTER_IN_PROBE_REQUEST); | |
723 | ||
8ca151b5 JB |
724 | return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); |
725 | } | |
726 | ||
5023d966 JB |
727 | static int iwl_mvm_mac_ctxt_cmd_ibss(struct iwl_mvm *mvm, |
728 | struct ieee80211_vif *vif, | |
729 | u32 action) | |
730 | { | |
731 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
732 | struct iwl_mac_ctx_cmd cmd = {}; | |
733 | ||
734 | WARN_ON(vif->type != NL80211_IFTYPE_ADHOC); | |
735 | ||
736 | iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action); | |
737 | ||
738 | cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_BEACON | | |
739 | MAC_FILTER_IN_PROBE_REQUEST); | |
740 | ||
741 | /* cmd.ibss.beacon_time/cmd.ibss.beacon_tsf are curently ignored */ | |
742 | cmd.ibss.bi = cpu_to_le32(vif->bss_conf.beacon_int); | |
743 | cmd.ibss.bi_reciprocal = | |
744 | cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int)); | |
745 | ||
746 | /* TODO: Assumes that the beacon id == mac context id */ | |
747 | cmd.ibss.beacon_template = cpu_to_le32(mvmvif->id); | |
748 | ||
749 | return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); | |
750 | } | |
751 | ||
8ca151b5 JB |
752 | struct iwl_mvm_go_iterator_data { |
753 | bool go_active; | |
754 | }; | |
755 | ||
756 | static void iwl_mvm_go_iterator(void *_data, u8 *mac, struct ieee80211_vif *vif) | |
757 | { | |
758 | struct iwl_mvm_go_iterator_data *data = _data; | |
759 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
760 | ||
5023d966 JB |
761 | if (vif->type == NL80211_IFTYPE_AP && vif->p2p && |
762 | mvmvif->ap_ibss_active) | |
8ca151b5 JB |
763 | data->go_active = true; |
764 | } | |
765 | ||
766 | static int iwl_mvm_mac_ctxt_cmd_p2p_device(struct iwl_mvm *mvm, | |
767 | struct ieee80211_vif *vif, | |
768 | u32 action) | |
769 | { | |
770 | struct iwl_mac_ctx_cmd cmd = {}; | |
771 | struct iwl_mvm_go_iterator_data data = {}; | |
772 | ||
773 | WARN_ON(vif->type != NL80211_IFTYPE_P2P_DEVICE); | |
774 | ||
775 | iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action); | |
776 | ||
777 | cmd.protection_flags |= cpu_to_le32(MAC_PROT_FLG_TGG_PROTECT); | |
1dcd15ee IP |
778 | |
779 | /* Override the filter flags to accept only probe requests */ | |
780 | cmd.filter_flags = cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST); | |
8ca151b5 JB |
781 | |
782 | /* | |
783 | * This flag should be set to true when the P2P Device is | |
784 | * discoverable and there is at least another active P2P GO. Settings | |
785 | * this flag will allow the P2P Device to be discoverable on other | |
786 | * channels in addition to its listen channel. | |
787 | * Note that this flag should not be set in other cases as it opens the | |
788 | * Rx filters on all MAC and increases the number of interrupts. | |
789 | */ | |
790 | ieee80211_iterate_active_interfaces_atomic( | |
791 | mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, | |
792 | iwl_mvm_go_iterator, &data); | |
793 | ||
794 | cmd.p2p_dev.is_disc_extended = cpu_to_le32(data.go_active ? 1 : 0); | |
795 | return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); | |
796 | } | |
797 | ||
798 | static void iwl_mvm_mac_ctxt_set_tim(struct iwl_mvm *mvm, | |
799 | struct iwl_mac_beacon_cmd *beacon_cmd, | |
800 | u8 *beacon, u32 frame_size) | |
801 | { | |
802 | u32 tim_idx; | |
803 | struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon; | |
804 | ||
805 | /* The index is relative to frame start but we start looking at the | |
806 | * variable-length part of the beacon. */ | |
807 | tim_idx = mgmt->u.beacon.variable - beacon; | |
808 | ||
809 | /* Parse variable-length elements of beacon to find WLAN_EID_TIM */ | |
810 | while ((tim_idx < (frame_size - 2)) && | |
811 | (beacon[tim_idx] != WLAN_EID_TIM)) | |
812 | tim_idx += beacon[tim_idx+1] + 2; | |
813 | ||
814 | /* If TIM field was found, set variables */ | |
815 | if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) { | |
816 | beacon_cmd->tim_idx = cpu_to_le32(tim_idx); | |
817 | beacon_cmd->tim_size = cpu_to_le32((u32)beacon[tim_idx+1]); | |
818 | } else { | |
819 | IWL_WARN(mvm, "Unable to find TIM Element in beacon\n"); | |
820 | } | |
821 | } | |
822 | ||
823 | static int iwl_mvm_mac_ctxt_send_beacon(struct iwl_mvm *mvm, | |
824 | struct ieee80211_vif *vif, | |
825 | struct sk_buff *beacon) | |
826 | { | |
827 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
828 | struct iwl_host_cmd cmd = { | |
829 | .id = BEACON_TEMPLATE_CMD, | |
830 | .flags = CMD_ASYNC, | |
831 | }; | |
832 | struct iwl_mac_beacon_cmd beacon_cmd = {}; | |
833 | struct ieee80211_tx_info *info; | |
834 | u32 beacon_skb_len; | |
835 | u32 rate; | |
836 | ||
837 | if (WARN_ON(!beacon)) | |
838 | return -EINVAL; | |
839 | ||
840 | beacon_skb_len = beacon->len; | |
841 | ||
842 | /* TODO: for now the beacon template id is set to be the mac context id. | |
843 | * Might be better to handle it as another resource ... */ | |
844 | beacon_cmd.template_id = cpu_to_le32((u32)mvmvif->id); | |
845 | ||
846 | /* Set up TX command fields */ | |
847 | beacon_cmd.tx.len = cpu_to_le16((u16)beacon_skb_len); | |
848 | beacon_cmd.tx.sta_id = mvmvif->bcast_sta.sta_id; | |
849 | beacon_cmd.tx.life_time = cpu_to_le32(TX_CMD_LIFE_TIME_INFINITE); | |
850 | beacon_cmd.tx.tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL | | |
851 | TX_CMD_FLG_BT_DIS | | |
852 | TX_CMD_FLG_TSF); | |
853 | ||
854 | mvm->mgmt_last_antenna_idx = | |
33223542 | 855 | iwl_mvm_next_antenna(mvm, iwl_fw_valid_tx_ant(mvm->fw), |
8ca151b5 JB |
856 | mvm->mgmt_last_antenna_idx); |
857 | ||
858 | beacon_cmd.tx.rate_n_flags = | |
859 | cpu_to_le32(BIT(mvm->mgmt_last_antenna_idx) << | |
860 | RATE_MCS_ANT_POS); | |
861 | ||
862 | info = IEEE80211_SKB_CB(beacon); | |
863 | ||
864 | if (info->band == IEEE80211_BAND_5GHZ || vif->p2p) { | |
865 | rate = IWL_FIRST_OFDM_RATE; | |
866 | } else { | |
867 | rate = IWL_FIRST_CCK_RATE; | |
868 | beacon_cmd.tx.rate_n_flags |= cpu_to_le32(RATE_MCS_CCK_MSK); | |
869 | } | |
870 | beacon_cmd.tx.rate_n_flags |= | |
871 | cpu_to_le32(iwl_mvm_mac80211_idx_to_hwrate(rate)); | |
872 | ||
873 | /* Set up TX beacon command fields */ | |
5023d966 JB |
874 | if (vif->type == NL80211_IFTYPE_AP) |
875 | iwl_mvm_mac_ctxt_set_tim(mvm, &beacon_cmd, | |
876 | beacon->data, | |
877 | beacon_skb_len); | |
8ca151b5 JB |
878 | |
879 | /* Submit command */ | |
880 | cmd.len[0] = sizeof(beacon_cmd); | |
881 | cmd.data[0] = &beacon_cmd; | |
882 | cmd.dataflags[0] = 0; | |
883 | cmd.len[1] = beacon_skb_len; | |
884 | cmd.data[1] = beacon->data; | |
885 | cmd.dataflags[1] = IWL_HCMD_DFL_DUP; | |
886 | ||
887 | return iwl_mvm_send_cmd(mvm, &cmd); | |
888 | } | |
889 | ||
5023d966 | 890 | /* The beacon template for the AP/GO/IBSS has changed and needs update */ |
8ca151b5 JB |
891 | int iwl_mvm_mac_ctxt_beacon_changed(struct iwl_mvm *mvm, |
892 | struct ieee80211_vif *vif) | |
893 | { | |
894 | struct sk_buff *beacon; | |
895 | int ret; | |
896 | ||
5023d966 JB |
897 | WARN_ON(vif->type != NL80211_IFTYPE_AP && |
898 | vif->type != NL80211_IFTYPE_ADHOC); | |
8ca151b5 JB |
899 | |
900 | beacon = ieee80211_beacon_get(mvm->hw, vif); | |
901 | if (!beacon) | |
902 | return -ENOMEM; | |
903 | ||
904 | ret = iwl_mvm_mac_ctxt_send_beacon(mvm, vif, beacon); | |
905 | dev_kfree_skb(beacon); | |
906 | return ret; | |
907 | } | |
908 | ||
3a3cb92e IP |
909 | struct iwl_mvm_mac_ap_iterator_data { |
910 | struct iwl_mvm *mvm; | |
911 | struct ieee80211_vif *vif; | |
912 | u32 beacon_device_ts; | |
913 | u16 beacon_int; | |
914 | }; | |
915 | ||
916 | /* Find the beacon_device_ts and beacon_int for a managed interface */ | |
917 | static void iwl_mvm_mac_ap_iterator(void *_data, u8 *mac, | |
918 | struct ieee80211_vif *vif) | |
919 | { | |
920 | struct iwl_mvm_mac_ap_iterator_data *data = _data; | |
921 | ||
922 | if (vif->type != NL80211_IFTYPE_STATION || !vif->bss_conf.assoc) | |
923 | return; | |
924 | ||
925 | /* Station client has higher priority over P2P client*/ | |
926 | if (vif->p2p && data->beacon_device_ts) | |
927 | return; | |
928 | ||
929 | data->beacon_device_ts = vif->bss_conf.sync_device_ts; | |
930 | data->beacon_int = vif->bss_conf.beacon_int; | |
931 | } | |
932 | ||
8ca151b5 JB |
933 | /* |
934 | * Fill the specific data for mac context of type AP of P2P GO | |
935 | */ | |
936 | static void iwl_mvm_mac_ctxt_cmd_fill_ap(struct iwl_mvm *mvm, | |
937 | struct ieee80211_vif *vif, | |
506a81e6 JB |
938 | struct iwl_mac_data_ap *ctxt_ap, |
939 | bool add) | |
8ca151b5 JB |
940 | { |
941 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
3a3cb92e IP |
942 | struct iwl_mvm_mac_ap_iterator_data data = { |
943 | .mvm = mvm, | |
944 | .vif = vif, | |
945 | .beacon_device_ts = 0 | |
946 | }; | |
8ca151b5 JB |
947 | |
948 | ctxt_ap->bi = cpu_to_le32(vif->bss_conf.beacon_int); | |
949 | ctxt_ap->bi_reciprocal = | |
950 | cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int)); | |
951 | ctxt_ap->dtim_interval = cpu_to_le32(vif->bss_conf.beacon_int * | |
952 | vif->bss_conf.dtim_period); | |
953 | ctxt_ap->dtim_reciprocal = | |
954 | cpu_to_le32(iwl_mvm_reciprocal(vif->bss_conf.beacon_int * | |
955 | vif->bss_conf.dtim_period)); | |
956 | ||
957 | ctxt_ap->mcast_qid = cpu_to_le32(vif->cab_queue); | |
8ca151b5 | 958 | |
506a81e6 | 959 | /* |
3a3cb92e | 960 | * Only set the beacon time when the MAC is being added, when we |
506a81e6 JB |
961 | * just modify the MAC then we should keep the time -- the firmware |
962 | * can otherwise have a "jumping" TBTT. | |
963 | */ | |
3a3cb92e IP |
964 | if (add) { |
965 | /* | |
966 | * If there is a station/P2P client interface which is | |
967 | * associated, set the AP's TBTT far enough from the station's | |
968 | * TBTT. Otherwise, set it to the current system time | |
969 | */ | |
970 | ieee80211_iterate_active_interfaces_atomic( | |
971 | mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL, | |
972 | iwl_mvm_mac_ap_iterator, &data); | |
973 | ||
974 | if (data.beacon_device_ts) { | |
975 | u32 rand = (prandom_u32() % (80 - 20)) + 20; | |
976 | mvmvif->ap_beacon_time = data.beacon_device_ts + | |
977 | ieee80211_tu_to_usec(data.beacon_int * rand / | |
978 | 100); | |
979 | } else { | |
980 | mvmvif->ap_beacon_time = | |
981 | iwl_read_prph(mvm->trans, | |
982 | DEVICE_SYSTEM_TIME_REG); | |
983 | } | |
984 | } | |
506a81e6 JB |
985 | |
986 | ctxt_ap->beacon_time = cpu_to_le32(mvmvif->ap_beacon_time); | |
506a81e6 | 987 | ctxt_ap->beacon_tsf = 0; /* unused */ |
8ca151b5 JB |
988 | |
989 | /* TODO: Assume that the beacon id == mac context id */ | |
990 | ctxt_ap->beacon_template = cpu_to_le32(mvmvif->id); | |
991 | } | |
992 | ||
993 | static int iwl_mvm_mac_ctxt_cmd_ap(struct iwl_mvm *mvm, | |
994 | struct ieee80211_vif *vif, | |
995 | u32 action) | |
996 | { | |
997 | struct iwl_mac_ctx_cmd cmd = {}; | |
998 | ||
999 | WARN_ON(vif->type != NL80211_IFTYPE_AP || vif->p2p); | |
1000 | ||
1001 | /* Fill the common data for all mac context types */ | |
1002 | iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action); | |
1003 | ||
1dcd15ee IP |
1004 | /* Also enable probe requests to pass */ |
1005 | cmd.filter_flags |= cpu_to_le32(MAC_FILTER_IN_PROBE_REQUEST); | |
1006 | ||
8ca151b5 | 1007 | /* Fill the data specific for ap mode */ |
506a81e6 JB |
1008 | iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd.ap, |
1009 | action == FW_CTXT_ACTION_ADD); | |
8ca151b5 JB |
1010 | |
1011 | return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); | |
1012 | } | |
1013 | ||
1014 | static int iwl_mvm_mac_ctxt_cmd_go(struct iwl_mvm *mvm, | |
1015 | struct ieee80211_vif *vif, | |
1016 | u32 action) | |
1017 | { | |
1018 | struct iwl_mac_ctx_cmd cmd = {}; | |
67baf663 | 1019 | struct ieee80211_p2p_noa_attr *noa = &vif->bss_conf.p2p_noa_attr; |
8ca151b5 JB |
1020 | |
1021 | WARN_ON(vif->type != NL80211_IFTYPE_AP || !vif->p2p); | |
1022 | ||
1023 | /* Fill the common data for all mac context types */ | |
1024 | iwl_mvm_mac_ctxt_cmd_common(mvm, vif, &cmd, action); | |
1025 | ||
1026 | /* Fill the data specific for GO mode */ | |
506a81e6 JB |
1027 | iwl_mvm_mac_ctxt_cmd_fill_ap(mvm, vif, &cmd.go.ap, |
1028 | action == FW_CTXT_ACTION_ADD); | |
8ca151b5 | 1029 | |
67baf663 JD |
1030 | cmd.go.ctwin = cpu_to_le32(noa->oppps_ctwindow & |
1031 | IEEE80211_P2P_OPPPS_CTWINDOW_MASK); | |
1032 | cmd.go.opp_ps_enabled = | |
1033 | cpu_to_le32(!!(noa->oppps_ctwindow & | |
1034 | IEEE80211_P2P_OPPPS_ENABLE_BIT)); | |
8ca151b5 JB |
1035 | |
1036 | return iwl_mvm_mac_ctxt_send_cmd(mvm, &cmd); | |
1037 | } | |
1038 | ||
1039 | static int iwl_mvm_mac_ctx_send(struct iwl_mvm *mvm, struct ieee80211_vif *vif, | |
1040 | u32 action) | |
1041 | { | |
1042 | switch (vif->type) { | |
1043 | case NL80211_IFTYPE_STATION: | |
1044 | if (!vif->p2p) | |
1045 | return iwl_mvm_mac_ctxt_cmd_station(mvm, vif, | |
1046 | action); | |
1047 | else | |
1048 | return iwl_mvm_mac_ctxt_cmd_p2p_client(mvm, vif, | |
1049 | action); | |
1050 | break; | |
1051 | case NL80211_IFTYPE_AP: | |
1052 | if (!vif->p2p) | |
1053 | return iwl_mvm_mac_ctxt_cmd_ap(mvm, vif, action); | |
1054 | else | |
1055 | return iwl_mvm_mac_ctxt_cmd_go(mvm, vif, action); | |
1056 | break; | |
1057 | case NL80211_IFTYPE_MONITOR: | |
1058 | return iwl_mvm_mac_ctxt_cmd_listener(mvm, vif, action); | |
1059 | case NL80211_IFTYPE_P2P_DEVICE: | |
1060 | return iwl_mvm_mac_ctxt_cmd_p2p_device(mvm, vif, action); | |
5023d966 JB |
1061 | case NL80211_IFTYPE_ADHOC: |
1062 | return iwl_mvm_mac_ctxt_cmd_ibss(mvm, vif, action); | |
8ca151b5 JB |
1063 | default: |
1064 | break; | |
1065 | } | |
1066 | ||
1067 | return -EOPNOTSUPP; | |
1068 | } | |
1069 | ||
1070 | int iwl_mvm_mac_ctxt_add(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
1071 | { | |
1072 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
1073 | int ret; | |
1074 | ||
1075 | if (WARN_ONCE(mvmvif->uploaded, "Adding active MAC %pM/%d\n", | |
1076 | vif->addr, ieee80211_vif_type_p2p(vif))) | |
1077 | return -EIO; | |
1078 | ||
1079 | ret = iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_ADD); | |
1080 | if (ret) | |
1081 | return ret; | |
1082 | ||
6d9d32b8 JB |
1083 | /* will only do anything at resume from D3 time */ |
1084 | iwl_mvm_set_last_nonqos_seq(mvm, vif); | |
1085 | ||
8ca151b5 JB |
1086 | mvmvif->uploaded = true; |
1087 | return 0; | |
1088 | } | |
1089 | ||
1090 | int iwl_mvm_mac_ctxt_changed(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
1091 | { | |
1092 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
1093 | ||
1094 | if (WARN_ONCE(!mvmvif->uploaded, "Changing inactive MAC %pM/%d\n", | |
1095 | vif->addr, ieee80211_vif_type_p2p(vif))) | |
1096 | return -EIO; | |
1097 | ||
1098 | return iwl_mvm_mac_ctx_send(mvm, vif, FW_CTXT_ACTION_MODIFY); | |
1099 | } | |
1100 | ||
1101 | int iwl_mvm_mac_ctxt_remove(struct iwl_mvm *mvm, struct ieee80211_vif *vif) | |
1102 | { | |
1103 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
1104 | struct iwl_mac_ctx_cmd cmd; | |
1105 | int ret; | |
1106 | ||
1107 | if (WARN_ONCE(!mvmvif->uploaded, "Removing inactive MAC %pM/%d\n", | |
1108 | vif->addr, ieee80211_vif_type_p2p(vif))) | |
1109 | return -EIO; | |
1110 | ||
1111 | memset(&cmd, 0, sizeof(cmd)); | |
1112 | ||
1113 | cmd.id_and_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mvmvif->id, | |
1114 | mvmvif->color)); | |
1115 | cmd.action = cpu_to_le32(FW_CTXT_ACTION_REMOVE); | |
1116 | ||
1117 | ret = iwl_mvm_send_cmd_pdu(mvm, MAC_CONTEXT_CMD, CMD_SYNC, | |
1118 | sizeof(cmd), &cmd); | |
1119 | if (ret) { | |
1120 | IWL_ERR(mvm, "Failed to remove MAC context: %d\n", ret); | |
1121 | return ret; | |
1122 | } | |
1123 | ||
1124 | mvmvif->uploaded = false; | |
1125 | return 0; | |
1126 | } | |
571765c8 IP |
1127 | |
1128 | int iwl_mvm_rx_beacon_notif(struct iwl_mvm *mvm, | |
1129 | struct iwl_rx_cmd_buffer *rxb, | |
1130 | struct iwl_device_cmd *cmd) | |
1131 | { | |
1132 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1133 | struct iwl_beacon_notif *beacon = (void *)pkt->data; | |
1134 | u16 status __maybe_unused = | |
1135 | le16_to_cpu(beacon->beacon_notify_hdr.status.status); | |
1136 | u32 rate __maybe_unused = | |
1137 | le32_to_cpu(beacon->beacon_notify_hdr.initial_rate); | |
1138 | ||
1139 | IWL_DEBUG_RX(mvm, "beacon status %#x retries:%d tsf:0x%16llX rate:%d\n", | |
1140 | status & TX_STATUS_MSK, | |
1141 | beacon->beacon_notify_hdr.failure_frame, | |
1142 | le64_to_cpu(beacon->tsf), | |
1143 | rate); | |
1144 | return 0; | |
1145 | } | |
d64048ed HG |
1146 | |
1147 | static void iwl_mvm_beacon_loss_iterator(void *_data, u8 *mac, | |
1148 | struct ieee80211_vif *vif) | |
1149 | { | |
1150 | u16 *id = _data; | |
1151 | struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); | |
1152 | ||
1153 | if (mvmvif->id == *id) | |
1154 | ieee80211_beacon_loss(vif); | |
1155 | } | |
1156 | ||
1157 | int iwl_mvm_rx_missed_beacons_notif(struct iwl_mvm *mvm, | |
1158 | struct iwl_rx_cmd_buffer *rxb, | |
1159 | struct iwl_device_cmd *cmd) | |
1160 | { | |
1161 | struct iwl_rx_packet *pkt = rxb_addr(rxb); | |
1162 | struct iwl_missed_beacons_notif *missed_beacons = (void *)pkt->data; | |
1163 | u16 id = (u16)le32_to_cpu(missed_beacons->mac_id); | |
1164 | ||
1165 | ieee80211_iterate_active_interfaces_atomic(mvm->hw, | |
1166 | IEEE80211_IFACE_ITER_NORMAL, | |
1167 | iwl_mvm_beacon_loss_iterator, | |
1168 | &id); | |
1169 | return 0; | |
1170 | } |