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gpio: rcar: Fix runtime PM imbalance on error
[linux/fpc-iii.git] / drivers / net / wireless / intel / iwlwifi / mvm / scan.c
blob7a6ad1ff7055ced985a89e60233e4f269e7e0455
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 - 2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
10 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
11 * Copyright(c) 2018 - 2019 Intel Corporation
12 *
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of version 2 of the GNU General Public License as
15 * published by the Free Software Foundation.
16 *
17 * This program is distributed in the hope that it will be useful, but
18 * WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * General Public License for more details.
21 *
22 * The full GNU General Public License is included in this distribution
23 * in the file called COPYING.
24 *
25 * Contact Information:
26 * Intel Linux Wireless <linuxwifi@intel.com>
27 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
28 *
29 * BSD LICENSE
30 *
31 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
32 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
33 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
34 * Copyright(c) 2018 - 2019 Intel Corporation
35 * All rights reserved.
36 *
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions
39 * are met:
40 *
41 * * Redistributions of source code must retain the above copyright
42 * notice, this list of conditions and the following disclaimer.
43 * * Redistributions in binary form must reproduce the above copyright
44 * notice, this list of conditions and the following disclaimer in
45 * the documentation and/or other materials provided with the
46 * distribution.
47 * * Neither the name Intel Corporation nor the names of its
48 * contributors may be used to endorse or promote products derived
49 * from this software without specific prior written permission.
50 *
51 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
52 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
53 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
54 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
55 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
56 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
57 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
58 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
59 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
60 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
61 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
62 *
63 *****************************************************************************/
64
65 #include <linux/etherdevice.h>
66 #include <net/mac80211.h>
67
68 #include "mvm.h"
69 #include "fw/api/scan.h"
70 #include "iwl-io.h"
71
72 #define IWL_DENSE_EBS_SCAN_RATIO 5
73 #define IWL_SPARSE_EBS_SCAN_RATIO 1
74
75 #define IWL_SCAN_DWELL_ACTIVE 10
76 #define IWL_SCAN_DWELL_PASSIVE 110
77 #define IWL_SCAN_DWELL_FRAGMENTED 44
78 #define IWL_SCAN_DWELL_EXTENDED 90
79 #define IWL_SCAN_NUM_OF_FRAGS 3
80 #define IWL_SCAN_LAST_2_4_CHN 14
81
82 /* adaptive dwell max budget time [TU] for full scan */
83 #define IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN 300
84 /* adaptive dwell max budget time [TU] for directed scan */
85 #define IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN 100
86 /* adaptive dwell default high band APs number */
87 #define IWL_SCAN_ADWELL_DEFAULT_HB_N_APS 8
88 /* adaptive dwell default low band APs number */
89 #define IWL_SCAN_ADWELL_DEFAULT_LB_N_APS 2
90 /* adaptive dwell default APs number in social channels (1, 6, 11) */
91 #define IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL 10
92 /* number of scan channels */
93 #define IWL_SCAN_NUM_CHANNELS 112
94 /* adaptive dwell number of APs override mask for p2p friendly GO */
95 #define IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY_BIT BIT(20)
96 /* adaptive dwell number of APs override mask for social channels */
97 #define IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS_BIT BIT(21)
98 /* adaptive dwell number of APs override for p2p friendly GO channels */
99 #define IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY 10
100 /* adaptive dwell number of APs override for social channels */
101 #define IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS 2
102
103 struct iwl_mvm_scan_timing_params {
104 u32 suspend_time;
105 u32 max_out_time;
106 };
107
108 static struct iwl_mvm_scan_timing_params scan_timing[] = {
109 [IWL_SCAN_TYPE_UNASSOC] = {
110 .suspend_time = 0,
111 .max_out_time = 0,
112 },
113 [IWL_SCAN_TYPE_WILD] = {
114 .suspend_time = 30,
115 .max_out_time = 120,
116 },
117 [IWL_SCAN_TYPE_MILD] = {
118 .suspend_time = 120,
119 .max_out_time = 120,
120 },
121 [IWL_SCAN_TYPE_FRAGMENTED] = {
122 .suspend_time = 95,
123 .max_out_time = 44,
124 },
125 [IWL_SCAN_TYPE_FAST_BALANCE] = {
126 .suspend_time = 30,
127 .max_out_time = 37,
128 },
129 };
130
131 struct iwl_mvm_scan_params {
132 /* For CDB this is low band scan type, for non-CDB - type. */
133 enum iwl_mvm_scan_type type;
134 enum iwl_mvm_scan_type hb_type;
135 u32 n_channels;
136 u16 delay;
137 int n_ssids;
138 struct cfg80211_ssid *ssids;
139 struct ieee80211_channel **channels;
140 u32 flags;
141 u8 *mac_addr;
142 u8 *mac_addr_mask;
143 bool no_cck;
144 bool pass_all;
145 int n_match_sets;
146 struct iwl_scan_probe_req preq;
147 struct cfg80211_match_set *match_sets;
148 int n_scan_plans;
149 struct cfg80211_sched_scan_plan *scan_plans;
150 u32 measurement_dwell;
151 };
152
153 static inline void *iwl_mvm_get_scan_req_umac_data(struct iwl_mvm *mvm)
154 {
155 struct iwl_scan_req_umac *cmd = mvm->scan_cmd;
156
157 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm))
158 return (void *)&cmd->v8.data;
159
160 if (iwl_mvm_is_adaptive_dwell_supported(mvm))
161 return (void *)&cmd->v7.data;
162
163 if (iwl_mvm_cdb_scan_api(mvm))
164 return (void *)&cmd->v6.data;
165
166 return (void *)&cmd->v1.data;
167 }
168
169 static inline struct iwl_scan_umac_chan_param *
170 iwl_mvm_get_scan_req_umac_channel(struct iwl_mvm *mvm)
171 {
172 struct iwl_scan_req_umac *cmd = mvm->scan_cmd;
173
174 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm))
175 return &cmd->v8.channel;
176
177 if (iwl_mvm_is_adaptive_dwell_supported(mvm))
178 return &cmd->v7.channel;
179
180 if (iwl_mvm_cdb_scan_api(mvm))
181 return &cmd->v6.channel;
182
183 return &cmd->v1.channel;
184 }
185
186 static u8 iwl_mvm_scan_rx_ant(struct iwl_mvm *mvm)
187 {
188 if (mvm->scan_rx_ant != ANT_NONE)
189 return mvm->scan_rx_ant;
190 return iwl_mvm_get_valid_rx_ant(mvm);
191 }
192
193 static inline __le16 iwl_mvm_scan_rx_chain(struct iwl_mvm *mvm)
194 {
195 u16 rx_chain;
196 u8 rx_ant;
197
198 rx_ant = iwl_mvm_scan_rx_ant(mvm);
199 rx_chain = rx_ant << PHY_RX_CHAIN_VALID_POS;
200 rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_MIMO_SEL_POS;
201 rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_SEL_POS;
202 rx_chain |= 0x1 << PHY_RX_CHAIN_DRIVER_FORCE_POS;
203 return cpu_to_le16(rx_chain);
204 }
205
206 static inline __le32
207 iwl_mvm_scan_rate_n_flags(struct iwl_mvm *mvm, enum nl80211_band band,
208 bool no_cck)
209 {
210 u32 tx_ant;
211
212 iwl_mvm_toggle_tx_ant(mvm, &mvm->scan_last_antenna_idx);
213 tx_ant = BIT(mvm->scan_last_antenna_idx) << RATE_MCS_ANT_POS;
214
215 if (band == NL80211_BAND_2GHZ && !no_cck)
216 return cpu_to_le32(IWL_RATE_1M_PLCP | RATE_MCS_CCK_MSK |
217 tx_ant);
218 else
219 return cpu_to_le32(IWL_RATE_6M_PLCP | tx_ant);
220 }
221
222 static void iwl_mvm_scan_condition_iterator(void *data, u8 *mac,
223 struct ieee80211_vif *vif)
224 {
225 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
226 int *global_cnt = data;
227
228 if (vif->type != NL80211_IFTYPE_P2P_DEVICE && mvmvif->phy_ctxt &&
229 mvmvif->phy_ctxt->id < NUM_PHY_CTX)
230 *global_cnt += 1;
231 }
232
233 static enum iwl_mvm_traffic_load iwl_mvm_get_traffic_load(struct iwl_mvm *mvm)
234 {
235 return mvm->tcm.result.global_load;
236 }
237
238 static enum iwl_mvm_traffic_load
239 iwl_mvm_get_traffic_load_band(struct iwl_mvm *mvm, enum nl80211_band band)
240 {
241 return mvm->tcm.result.band_load[band];
242 }
243
244 struct iwl_is_dcm_with_go_iterator_data {
245 struct ieee80211_vif *current_vif;
246 bool is_dcm_with_p2p_go;
247 };
248
249 static void iwl_mvm_is_dcm_with_go_iterator(void *_data, u8 *mac,
250 struct ieee80211_vif *vif)
251 {
252 struct iwl_is_dcm_with_go_iterator_data *data = _data;
253 struct iwl_mvm_vif *other_mvmvif = iwl_mvm_vif_from_mac80211(vif);
254 struct iwl_mvm_vif *curr_mvmvif =
255 iwl_mvm_vif_from_mac80211(data->current_vif);
256
257 /* exclude the given vif */
258 if (vif == data->current_vif)
259 return;
260
261 if (vif->type == NL80211_IFTYPE_AP && vif->p2p &&
262 other_mvmvif->phy_ctxt && curr_mvmvif->phy_ctxt &&
263 other_mvmvif->phy_ctxt->id != curr_mvmvif->phy_ctxt->id)
264 data->is_dcm_with_p2p_go = true;
265 }
266
267 static enum
268 iwl_mvm_scan_type _iwl_mvm_get_scan_type(struct iwl_mvm *mvm,
269 struct ieee80211_vif *vif,
270 enum iwl_mvm_traffic_load load,
271 bool low_latency)
272 {
273 int global_cnt = 0;
274
275 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
276 IEEE80211_IFACE_ITER_NORMAL,
277 iwl_mvm_scan_condition_iterator,
278 &global_cnt);
279 if (!global_cnt)
280 return IWL_SCAN_TYPE_UNASSOC;
281
282 if (fw_has_api(&mvm->fw->ucode_capa,
283 IWL_UCODE_TLV_API_FRAGMENTED_SCAN)) {
284 if ((load == IWL_MVM_TRAFFIC_HIGH || low_latency) &&
285 (!vif || vif->type != NL80211_IFTYPE_P2P_DEVICE))
286 return IWL_SCAN_TYPE_FRAGMENTED;
287
288 /* in case of DCM with GO where BSS DTIM interval < 220msec
289 * set all scan requests as fast-balance scan
290 * */
291 if (vif && vif->type == NL80211_IFTYPE_STATION &&
292 vif->bss_conf.dtim_period < 220) {
293 struct iwl_is_dcm_with_go_iterator_data data = {
294 .current_vif = vif,
295 .is_dcm_with_p2p_go = false,
296 };
297
298 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
299 IEEE80211_IFACE_ITER_NORMAL,
300 iwl_mvm_is_dcm_with_go_iterator,
301 &data);
302 if (data.is_dcm_with_p2p_go)
303 return IWL_SCAN_TYPE_FAST_BALANCE;
304 }
305 }
306
307 if (load >= IWL_MVM_TRAFFIC_MEDIUM || low_latency)
308 return IWL_SCAN_TYPE_MILD;
309
310 return IWL_SCAN_TYPE_WILD;
311 }
312
313 static enum
314 iwl_mvm_scan_type iwl_mvm_get_scan_type(struct iwl_mvm *mvm,
315 struct ieee80211_vif *vif)
316 {
317 enum iwl_mvm_traffic_load load;
318 bool low_latency;
319
320 load = iwl_mvm_get_traffic_load(mvm);
321 low_latency = iwl_mvm_low_latency(mvm);
322
323 return _iwl_mvm_get_scan_type(mvm, vif, load, low_latency);
324 }
325
326 static enum
327 iwl_mvm_scan_type iwl_mvm_get_scan_type_band(struct iwl_mvm *mvm,
328 struct ieee80211_vif *vif,
329 enum nl80211_band band)
330 {
331 enum iwl_mvm_traffic_load load;
332 bool low_latency;
333
334 load = iwl_mvm_get_traffic_load_band(mvm, band);
335 low_latency = iwl_mvm_low_latency_band(mvm, band);
336
337 return _iwl_mvm_get_scan_type(mvm, vif, load, low_latency);
338 }
339
340 static int
341 iwl_mvm_get_measurement_dwell(struct iwl_mvm *mvm,
342 struct cfg80211_scan_request *req,
343 struct iwl_mvm_scan_params *params)
344 {
345 u32 duration = scan_timing[params->type].max_out_time;
346
347 if (!req->duration)
348 return 0;
349
350 if (iwl_mvm_is_cdb_supported(mvm)) {
351 u32 hb_time = scan_timing[params->hb_type].max_out_time;
352
353 duration = min_t(u32, duration, hb_time);
354 }
355
356 if (req->duration_mandatory && req->duration > duration) {
357 IWL_DEBUG_SCAN(mvm,
358 "Measurement scan - too long dwell %hu (max out time %u)\n",
359 req->duration,
360 duration);
361 return -EOPNOTSUPP;
362 }
363
364 return min_t(u32, (u32)req->duration, duration);
365 }
366
367 static inline bool iwl_mvm_rrm_scan_needed(struct iwl_mvm *mvm)
368 {
369 /* require rrm scan whenever the fw supports it */
370 return fw_has_capa(&mvm->fw->ucode_capa,
371 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT);
372 }
373
374 static int iwl_mvm_max_scan_ie_fw_cmd_room(struct iwl_mvm *mvm)
375 {
376 int max_probe_len;
377
378 max_probe_len = SCAN_OFFLOAD_PROBE_REQ_SIZE;
379
380 /* we create the 802.11 header and SSID element */
381 max_probe_len -= 24 + 2;
382
383 /* DS parameter set element is added on 2.4GHZ band if required */
384 if (iwl_mvm_rrm_scan_needed(mvm))
385 max_probe_len -= 3;
386
387 return max_probe_len;
388 }
389
390 int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm)
391 {
392 int max_ie_len = iwl_mvm_max_scan_ie_fw_cmd_room(mvm);
393
394 /* TODO: [BUG] This function should return the maximum allowed size of
395 * scan IEs, however the LMAC scan api contains both 2GHZ and 5GHZ IEs
396 * in the same command. So the correct implementation of this function
397 * is just iwl_mvm_max_scan_ie_fw_cmd_room() / 2. Currently the scan
398 * command has only 512 bytes and it would leave us with about 240
399 * bytes for scan IEs, which is clearly not enough. So meanwhile
400 * we will report an incorrect value. This may result in a failure to
401 * issue a scan in unified_scan_lmac and unified_sched_scan_lmac
402 * functions with -ENOBUFS, if a large enough probe will be provided.
403 */
404 return max_ie_len;
405 }
406
407 void iwl_mvm_rx_lmac_scan_iter_complete_notif(struct iwl_mvm *mvm,
408 struct iwl_rx_cmd_buffer *rxb)
409 {
410 struct iwl_rx_packet *pkt = rxb_addr(rxb);
411 struct iwl_lmac_scan_complete_notif *notif = (void *)pkt->data;
412
413 IWL_DEBUG_SCAN(mvm,
414 "Scan offload iteration complete: status=0x%x scanned channels=%d\n",
415 notif->status, notif->scanned_channels);
416
417 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) {
418 IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n");
419 ieee80211_sched_scan_results(mvm->hw);
420 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED;
421 }
422 }
423
424 void iwl_mvm_rx_scan_match_found(struct iwl_mvm *mvm,
425 struct iwl_rx_cmd_buffer *rxb)
426 {
427 IWL_DEBUG_SCAN(mvm, "Scheduled scan results\n");
428 ieee80211_sched_scan_results(mvm->hw);
429 }
430
431 static const char *iwl_mvm_ebs_status_str(enum iwl_scan_ebs_status status)
432 {
433 switch (status) {
434 case IWL_SCAN_EBS_SUCCESS:
435 return "successful";
436 case IWL_SCAN_EBS_INACTIVE:
437 return "inactive";
438 case IWL_SCAN_EBS_FAILED:
439 case IWL_SCAN_EBS_CHAN_NOT_FOUND:
440 default:
441 return "failed";
442 }
443 }
444
445 void iwl_mvm_rx_lmac_scan_complete_notif(struct iwl_mvm *mvm,
446 struct iwl_rx_cmd_buffer *rxb)
447 {
448 struct iwl_rx_packet *pkt = rxb_addr(rxb);
449 struct iwl_periodic_scan_complete *scan_notif = (void *)pkt->data;
450 bool aborted = (scan_notif->status == IWL_SCAN_OFFLOAD_ABORTED);
451
452 /* If this happens, the firmware has mistakenly sent an LMAC
453 * notification during UMAC scans -- warn and ignore it.
454 */
455 if (WARN_ON_ONCE(fw_has_capa(&mvm->fw->ucode_capa,
456 IWL_UCODE_TLV_CAPA_UMAC_SCAN)))
457 return;
458
459 /* scan status must be locked for proper checking */
460 lockdep_assert_held(&mvm->mutex);
461
462 /* We first check if we were stopping a scan, in which case we
463 * just clear the stopping flag. Then we check if it was a
464 * firmware initiated stop, in which case we need to inform
465 * mac80211.
466 * Note that we can have a stopping and a running scan
467 * simultaneously, but we can't have two different types of
468 * scans stopping or running at the same time (since LMAC
469 * doesn't support it).
470 */
471
472 if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_SCHED) {
473 WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR);
474
475 IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n",
476 aborted ? "aborted" : "completed",
477 iwl_mvm_ebs_status_str(scan_notif->ebs_status));
478 IWL_DEBUG_SCAN(mvm,
479 "Last line %d, Last iteration %d, Time after last iteration %d\n",
480 scan_notif->last_schedule_line,
481 scan_notif->last_schedule_iteration,
482 __le32_to_cpu(scan_notif->time_after_last_iter));
483
484 mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_SCHED;
485 } else if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR) {
486 IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s\n",
487 aborted ? "aborted" : "completed",
488 iwl_mvm_ebs_status_str(scan_notif->ebs_status));
489
490 mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_REGULAR;
491 } else if (mvm->scan_status & IWL_MVM_SCAN_SCHED) {
492 WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_REGULAR);
493
494 IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n",
495 aborted ? "aborted" : "completed",
496 iwl_mvm_ebs_status_str(scan_notif->ebs_status));
497 IWL_DEBUG_SCAN(mvm,
498 "Last line %d, Last iteration %d, Time after last iteration %d (FW)\n",
499 scan_notif->last_schedule_line,
500 scan_notif->last_schedule_iteration,
501 __le32_to_cpu(scan_notif->time_after_last_iter));
502
503 mvm->scan_status &= ~IWL_MVM_SCAN_SCHED;
504 ieee80211_sched_scan_stopped(mvm->hw);
505 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
506 } else if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) {
507 struct cfg80211_scan_info info = {
508 .aborted = aborted,
509 };
510
511 IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s (FW)\n",
512 aborted ? "aborted" : "completed",
513 iwl_mvm_ebs_status_str(scan_notif->ebs_status));
514
515 mvm->scan_status &= ~IWL_MVM_SCAN_REGULAR;
516 ieee80211_scan_completed(mvm->hw, &info);
517 cancel_delayed_work(&mvm->scan_timeout_dwork);
518 iwl_mvm_resume_tcm(mvm);
519 } else {
520 IWL_ERR(mvm,
521 "got scan complete notification but no scan is running\n");
522 }
523
524 mvm->last_ebs_successful =
525 scan_notif->ebs_status == IWL_SCAN_EBS_SUCCESS ||
526 scan_notif->ebs_status == IWL_SCAN_EBS_INACTIVE;
527 }
528
529 static int iwl_ssid_exist(u8 *ssid, u8 ssid_len, struct iwl_ssid_ie *ssid_list)
530 {
531 int i;
532
533 for (i = 0; i < PROBE_OPTION_MAX; i++) {
534 if (!ssid_list[i].len)
535 break;
536 if (ssid_list[i].len == ssid_len &&
537 !memcmp(ssid_list->ssid, ssid, ssid_len))
538 return i;
539 }
540 return -1;
541 }
542
543 /* We insert the SSIDs in an inverted order, because the FW will
544 * invert it back.
545 */
546 static void iwl_scan_build_ssids(struct iwl_mvm_scan_params *params,
547 struct iwl_ssid_ie *ssids,
548 u32 *ssid_bitmap)
549 {
550 int i, j;
551 int index;
552 u32 tmp_bitmap = 0;
553
554 /*
555 * copy SSIDs from match list.
556 * iwl_config_sched_scan_profiles() uses the order of these ssids to
557 * config match list.
558 */
559 for (i = 0, j = params->n_match_sets - 1;
560 j >= 0 && i < PROBE_OPTION_MAX;
561 i++, j--) {
562 /* skip empty SSID matchsets */
563 if (!params->match_sets[j].ssid.ssid_len)
564 continue;
565 ssids[i].id = WLAN_EID_SSID;
566 ssids[i].len = params->match_sets[j].ssid.ssid_len;
567 memcpy(ssids[i].ssid, params->match_sets[j].ssid.ssid,
568 ssids[i].len);
569 }
570
571 /* add SSIDs from scan SSID list */
572 for (j = params->n_ssids - 1;
573 j >= 0 && i < PROBE_OPTION_MAX;
574 i++, j--) {
575 index = iwl_ssid_exist(params->ssids[j].ssid,
576 params->ssids[j].ssid_len,
577 ssids);
578 if (index < 0) {
579 ssids[i].id = WLAN_EID_SSID;
580 ssids[i].len = params->ssids[j].ssid_len;
581 memcpy(ssids[i].ssid, params->ssids[j].ssid,
582 ssids[i].len);
583 tmp_bitmap |= BIT(i);
584 } else {
585 tmp_bitmap |= BIT(index);
586 }
587 }
588 if (ssid_bitmap)
589 *ssid_bitmap = tmp_bitmap;
590 }
591
592 static int
593 iwl_mvm_config_sched_scan_profiles(struct iwl_mvm *mvm,
594 struct cfg80211_sched_scan_request *req)
595 {
596 struct iwl_scan_offload_profile *profile;
597 struct iwl_scan_offload_profile_cfg_v1 *profile_cfg_v1;
598 struct iwl_scan_offload_blacklist *blacklist;
599 struct iwl_scan_offload_profile_cfg_data *data;
600 int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw);
601 int profile_cfg_size = sizeof(*data) +
602 sizeof(*profile) * max_profiles;
603 struct iwl_host_cmd cmd = {
604 .id = SCAN_OFFLOAD_UPDATE_PROFILES_CMD,
605 .len[1] = profile_cfg_size,
606 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
607 .dataflags[1] = IWL_HCMD_DFL_NOCOPY,
608 };
609 int blacklist_len;
610 int i;
611 int ret;
612
613 if (WARN_ON(req->n_match_sets > max_profiles))
614 return -EIO;
615
616 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SHORT_BL)
617 blacklist_len = IWL_SCAN_SHORT_BLACKLIST_LEN;
618 else
619 blacklist_len = IWL_SCAN_MAX_BLACKLIST_LEN;
620
621 blacklist = kcalloc(blacklist_len, sizeof(*blacklist), GFP_KERNEL);
622 if (!blacklist)
623 return -ENOMEM;
624
625 profile_cfg_v1 = kzalloc(profile_cfg_size, GFP_KERNEL);
626 if (!profile_cfg_v1) {
627 ret = -ENOMEM;
628 goto free_blacklist;
629 }
630
631 cmd.data[0] = blacklist;
632 cmd.len[0] = sizeof(*blacklist) * blacklist_len;
633 cmd.data[1] = profile_cfg_v1;
634
635 /* if max_profile is MAX_PROFILES_V2, we have the new API */
636 if (max_profiles == IWL_SCAN_MAX_PROFILES_V2) {
637 struct iwl_scan_offload_profile_cfg *profile_cfg =
638 (struct iwl_scan_offload_profile_cfg *)profile_cfg_v1;
639
640 data = &profile_cfg->data;
641 } else {
642 data = &profile_cfg_v1->data;
643 }
644
645 /* No blacklist configuration */
646 data->num_profiles = req->n_match_sets;
647 data->active_clients = SCAN_CLIENT_SCHED_SCAN;
648 data->pass_match = SCAN_CLIENT_SCHED_SCAN;
649 data->match_notify = SCAN_CLIENT_SCHED_SCAN;
650
651 if (!req->n_match_sets || !req->match_sets[0].ssid.ssid_len)
652 data->any_beacon_notify = SCAN_CLIENT_SCHED_SCAN;
653
654 for (i = 0; i < req->n_match_sets; i++) {
655 profile = &profile_cfg_v1->profiles[i];
656 profile->ssid_index = i;
657 /* Support any cipher and auth algorithm */
658 profile->unicast_cipher = 0xff;
659 profile->auth_alg = 0xff;
660 profile->network_type = IWL_NETWORK_TYPE_ANY;
661 profile->band_selection = IWL_SCAN_OFFLOAD_SELECT_ANY;
662 profile->client_bitmap = SCAN_CLIENT_SCHED_SCAN;
663 }
664
665 IWL_DEBUG_SCAN(mvm, "Sending scheduled scan profile config\n");
666
667 ret = iwl_mvm_send_cmd(mvm, &cmd);
668 kfree(profile_cfg_v1);
669 free_blacklist:
670 kfree(blacklist);
671
672 return ret;
673 }
674
675 static bool iwl_mvm_scan_pass_all(struct iwl_mvm *mvm,
676 struct cfg80211_sched_scan_request *req)
677 {
678 if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) {
679 IWL_DEBUG_SCAN(mvm,
680 "Sending scheduled scan with filtering, n_match_sets %d\n",
681 req->n_match_sets);
682 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
683 return false;
684 }
685
686 IWL_DEBUG_SCAN(mvm, "Sending Scheduled scan without filtering\n");
687
688 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED;
689 return true;
690 }
691
692 static int iwl_mvm_lmac_scan_abort(struct iwl_mvm *mvm)
693 {
694 int ret;
695 struct iwl_host_cmd cmd = {
696 .id = SCAN_OFFLOAD_ABORT_CMD,
697 };
698 u32 status = CAN_ABORT_STATUS;
699
700 ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status);
701 if (ret)
702 return ret;
703
704 if (status != CAN_ABORT_STATUS) {
705 /*
706 * The scan abort will return 1 for success or
707 * 2 for "failure". A failure condition can be
708 * due to simply not being in an active scan which
709 * can occur if we send the scan abort before the
710 * microcode has notified us that a scan is completed.
711 */
712 IWL_DEBUG_SCAN(mvm, "SCAN OFFLOAD ABORT ret %d.\n", status);
713 ret = -ENOENT;
714 }
715
716 return ret;
717 }
718
719 static void iwl_mvm_scan_fill_tx_cmd(struct iwl_mvm *mvm,
720 struct iwl_scan_req_tx_cmd *tx_cmd,
721 bool no_cck)
722 {
723 tx_cmd[0].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL |
724 TX_CMD_FLG_BT_DIS);
725 tx_cmd[0].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm,
726 NL80211_BAND_2GHZ,
727 no_cck);
728 tx_cmd[0].sta_id = mvm->aux_sta.sta_id;
729
730 tx_cmd[1].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL |
731 TX_CMD_FLG_BT_DIS);
732 tx_cmd[1].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm,
733 NL80211_BAND_5GHZ,
734 no_cck);
735 tx_cmd[1].sta_id = mvm->aux_sta.sta_id;
736 }
737
738 static void
739 iwl_mvm_lmac_scan_cfg_channels(struct iwl_mvm *mvm,
740 struct ieee80211_channel **channels,
741 int n_channels, u32 ssid_bitmap,
742 struct iwl_scan_req_lmac *cmd)
743 {
744 struct iwl_scan_channel_cfg_lmac *channel_cfg = (void *)&cmd->data;
745 int i;
746
747 for (i = 0; i < n_channels; i++) {
748 channel_cfg[i].channel_num =
749 cpu_to_le16(channels[i]->hw_value);
750 channel_cfg[i].iter_count = cpu_to_le16(1);
751 channel_cfg[i].iter_interval = 0;
752 channel_cfg[i].flags =
753 cpu_to_le32(IWL_UNIFIED_SCAN_CHANNEL_PARTIAL |
754 ssid_bitmap);
755 }
756 }
757
758 static u8 *iwl_mvm_copy_and_insert_ds_elem(struct iwl_mvm *mvm, const u8 *ies,
759 size_t len, u8 *const pos)
760 {
761 static const u8 before_ds_params[] = {
762 WLAN_EID_SSID,
763 WLAN_EID_SUPP_RATES,
764 WLAN_EID_REQUEST,
765 WLAN_EID_EXT_SUPP_RATES,
766 };
767 size_t offs;
768 u8 *newpos = pos;
769
770 if (!iwl_mvm_rrm_scan_needed(mvm)) {
771 memcpy(newpos, ies, len);
772 return newpos + len;
773 }
774
775 offs = ieee80211_ie_split(ies, len,
776 before_ds_params,
777 ARRAY_SIZE(before_ds_params),
778 0);
779
780 memcpy(newpos, ies, offs);
781 newpos += offs;
782
783 /* Add a placeholder for DS Parameter Set element */
784 *newpos++ = WLAN_EID_DS_PARAMS;
785 *newpos++ = 1;
786 *newpos++ = 0;
787
788 memcpy(newpos, ies + offs, len - offs);
789 newpos += len - offs;
790
791 return newpos;
792 }
793
794 #define WFA_TPC_IE_LEN 9
795
796 static void iwl_mvm_add_tpc_report_ie(u8 *pos)
797 {
798 pos[0] = WLAN_EID_VENDOR_SPECIFIC;
799 pos[1] = WFA_TPC_IE_LEN - 2;
800 pos[2] = (WLAN_OUI_MICROSOFT >> 16) & 0xff;
801 pos[3] = (WLAN_OUI_MICROSOFT >> 8) & 0xff;
802 pos[4] = WLAN_OUI_MICROSOFT & 0xff;
803 pos[5] = WLAN_OUI_TYPE_MICROSOFT_TPC;
804 pos[6] = 0;
805 /* pos[7] - tx power will be inserted by the FW */
806 pos[7] = 0;
807 pos[8] = 0;
808 }
809
810 static void
811 iwl_mvm_build_scan_probe(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
812 struct ieee80211_scan_ies *ies,
813 struct iwl_mvm_scan_params *params)
814 {
815 struct ieee80211_mgmt *frame = (void *)params->preq.buf;
816 u8 *pos, *newpos;
817 const u8 *mac_addr = params->flags & NL80211_SCAN_FLAG_RANDOM_ADDR ?
818 params->mac_addr : NULL;
819
820 /*
821 * Unfortunately, right now the offload scan doesn't support randomising
822 * within the firmware, so until the firmware API is ready we implement
823 * it in the driver. This means that the scan iterations won't really be
824 * random, only when it's restarted, but at least that helps a bit.
825 */
826 if (mac_addr)
827 get_random_mask_addr(frame->sa, mac_addr,
828 params->mac_addr_mask);
829 else
830 memcpy(frame->sa, vif->addr, ETH_ALEN);
831
832 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
833 eth_broadcast_addr(frame->da);
834 eth_broadcast_addr(frame->bssid);
835 frame->seq_ctrl = 0;
836
837 pos = frame->u.probe_req.variable;
838 *pos++ = WLAN_EID_SSID;
839 *pos++ = 0;
840
841 params->preq.mac_header.offset = 0;
842 params->preq.mac_header.len = cpu_to_le16(24 + 2);
843
844 /* Insert ds parameter set element on 2.4 GHz band */
845 newpos = iwl_mvm_copy_and_insert_ds_elem(mvm,
846 ies->ies[NL80211_BAND_2GHZ],
847 ies->len[NL80211_BAND_2GHZ],
848 pos);
849 params->preq.band_data[0].offset = cpu_to_le16(pos - params->preq.buf);
850 params->preq.band_data[0].len = cpu_to_le16(newpos - pos);
851 pos = newpos;
852
853 memcpy(pos, ies->ies[NL80211_BAND_5GHZ],
854 ies->len[NL80211_BAND_5GHZ]);
855 params->preq.band_data[1].offset = cpu_to_le16(pos - params->preq.buf);
856 params->preq.band_data[1].len =
857 cpu_to_le16(ies->len[NL80211_BAND_5GHZ]);
858 pos += ies->len[NL80211_BAND_5GHZ];
859
860 memcpy(pos, ies->common_ies, ies->common_ie_len);
861 params->preq.common_data.offset = cpu_to_le16(pos - params->preq.buf);
862
863 if (iwl_mvm_rrm_scan_needed(mvm) &&
864 !fw_has_capa(&mvm->fw->ucode_capa,
865 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) {
866 iwl_mvm_add_tpc_report_ie(pos + ies->common_ie_len);
867 params->preq.common_data.len = cpu_to_le16(ies->common_ie_len +
868 WFA_TPC_IE_LEN);
869 } else {
870 params->preq.common_data.len = cpu_to_le16(ies->common_ie_len);
871 }
872 }
873
874 static void iwl_mvm_scan_lmac_dwell(struct iwl_mvm *mvm,
875 struct iwl_scan_req_lmac *cmd,
876 struct iwl_mvm_scan_params *params)
877 {
878 cmd->active_dwell = IWL_SCAN_DWELL_ACTIVE;
879 cmd->passive_dwell = IWL_SCAN_DWELL_PASSIVE;
880 cmd->fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED;
881 cmd->extended_dwell = IWL_SCAN_DWELL_EXTENDED;
882 cmd->max_out_time = cpu_to_le32(scan_timing[params->type].max_out_time);
883 cmd->suspend_time = cpu_to_le32(scan_timing[params->type].suspend_time);
884 cmd->scan_prio = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
885 }
886
887 static inline bool iwl_mvm_scan_fits(struct iwl_mvm *mvm, int n_ssids,
888 struct ieee80211_scan_ies *ies,
889 int n_channels)
890 {
891 return ((n_ssids <= PROBE_OPTION_MAX) &&
892 (n_channels <= mvm->fw->ucode_capa.n_scan_channels) &
893 (ies->common_ie_len +
894 ies->len[NL80211_BAND_2GHZ] +
895 ies->len[NL80211_BAND_5GHZ] <=
896 iwl_mvm_max_scan_ie_fw_cmd_room(mvm)));
897 }
898
899 static inline bool iwl_mvm_scan_use_ebs(struct iwl_mvm *mvm,
900 struct ieee80211_vif *vif)
901 {
902 const struct iwl_ucode_capabilities *capa = &mvm->fw->ucode_capa;
903 bool low_latency;
904
905 if (iwl_mvm_is_cdb_supported(mvm))
906 low_latency = iwl_mvm_low_latency_band(mvm, NL80211_BAND_5GHZ);
907 else
908 low_latency = iwl_mvm_low_latency(mvm);
909
910 /* We can only use EBS if:
911 * 1. the feature is supported;
912 * 2. the last EBS was successful;
913 * 3. if only single scan, the single scan EBS API is supported;
914 * 4. it's not a p2p find operation.
915 * 5. we are not in low latency mode,
916 * or if fragmented ebs is supported by the FW
917 */
918 return ((capa->flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT) &&
919 mvm->last_ebs_successful && IWL_MVM_ENABLE_EBS &&
920 vif->type != NL80211_IFTYPE_P2P_DEVICE &&
921 (!low_latency || iwl_mvm_is_frag_ebs_supported(mvm)));
922 }
923
924 static inline bool iwl_mvm_is_regular_scan(struct iwl_mvm_scan_params *params)
925 {
926 return params->n_scan_plans == 1 &&
927 params->scan_plans[0].iterations == 1;
928 }
929
930 static bool iwl_mvm_is_scan_fragmented(enum iwl_mvm_scan_type type)
931 {
932 return (type == IWL_SCAN_TYPE_FRAGMENTED ||
933 type == IWL_SCAN_TYPE_FAST_BALANCE);
934 }
935
936 static int iwl_mvm_scan_lmac_flags(struct iwl_mvm *mvm,
937 struct iwl_mvm_scan_params *params,
938 struct ieee80211_vif *vif)
939 {
940 int flags = 0;
941
942 if (params->n_ssids == 0)
943 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE;
944
945 if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0)
946 flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION;
947
948 if (iwl_mvm_is_scan_fragmented(params->type))
949 flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED;
950
951 if (iwl_mvm_rrm_scan_needed(mvm) &&
952 fw_has_capa(&mvm->fw->ucode_capa,
953 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
954 flags |= IWL_MVM_LMAC_SCAN_FLAGS_RRM_ENABLED;
955
956 if (params->pass_all)
957 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL;
958 else
959 flags |= IWL_MVM_LMAC_SCAN_FLAG_MATCH;
960
961 #ifdef CONFIG_IWLWIFI_DEBUGFS
962 if (mvm->scan_iter_notif_enabled)
963 flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE;
964 #endif
965
966 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED)
967 flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE;
968
969 if (iwl_mvm_is_regular_scan(params) &&
970 vif->type != NL80211_IFTYPE_P2P_DEVICE &&
971 !iwl_mvm_is_scan_fragmented(params->type))
972 flags |= IWL_MVM_LMAC_SCAN_FLAG_EXTENDED_DWELL;
973
974 return flags;
975 }
976
977 static void
978 iwl_mvm_scan_set_legacy_probe_req(struct iwl_scan_probe_req_v1 *p_req,
979 struct iwl_scan_probe_req *src_p_req)
980 {
981 int i;
982
983 p_req->mac_header = src_p_req->mac_header;
984 for (i = 0; i < SCAN_NUM_BAND_PROBE_DATA_V_1; i++)
985 p_req->band_data[i] = src_p_req->band_data[i];
986 p_req->common_data = src_p_req->common_data;
987 memcpy(p_req->buf, src_p_req->buf, sizeof(p_req->buf));
988 }
989
990 static int iwl_mvm_scan_lmac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
991 struct iwl_mvm_scan_params *params)
992 {
993 struct iwl_scan_req_lmac *cmd = mvm->scan_cmd;
994 struct iwl_scan_probe_req_v1 *preq =
995 (void *)(cmd->data + sizeof(struct iwl_scan_channel_cfg_lmac) *
996 mvm->fw->ucode_capa.n_scan_channels);
997 u32 ssid_bitmap = 0;
998 int i;
999 u8 band;
1000
1001 if (WARN_ON(params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS))
1002 return -EINVAL;
1003
1004 iwl_mvm_scan_lmac_dwell(mvm, cmd, params);
1005
1006 cmd->rx_chain_select = iwl_mvm_scan_rx_chain(mvm);
1007 cmd->iter_num = cpu_to_le32(1);
1008 cmd->n_channels = (u8)params->n_channels;
1009
1010 cmd->delay = cpu_to_le32(params->delay);
1011
1012 cmd->scan_flags = cpu_to_le32(iwl_mvm_scan_lmac_flags(mvm, params,
1013 vif));
1014
1015 band = iwl_mvm_phy_band_from_nl80211(params->channels[0]->band);
1016 cmd->flags = cpu_to_le32(band);
1017 cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP |
1018 MAC_FILTER_IN_BEACON);
1019 iwl_mvm_scan_fill_tx_cmd(mvm, cmd->tx_cmd, params->no_cck);
1020 iwl_scan_build_ssids(params, cmd->direct_scan, &ssid_bitmap);
1021
1022 /* this API uses bits 1-20 instead of 0-19 */
1023 ssid_bitmap <<= 1;
1024
1025 for (i = 0; i < params->n_scan_plans; i++) {
1026 struct cfg80211_sched_scan_plan *scan_plan =
1027 &params->scan_plans[i];
1028
1029 cmd->schedule[i].delay =
1030 cpu_to_le16(scan_plan->interval);
1031 cmd->schedule[i].iterations = scan_plan->iterations;
1032 cmd->schedule[i].full_scan_mul = 1;
1033 }
1034
1035 /*
1036 * If the number of iterations of the last scan plan is set to
1037 * zero, it should run infinitely. However, this is not always the case.
1038 * For example, when regular scan is requested the driver sets one scan
1039 * plan with one iteration.
1040 */
1041 if (!cmd->schedule[i - 1].iterations)
1042 cmd->schedule[i - 1].iterations = 0xff;
1043
1044 if (iwl_mvm_scan_use_ebs(mvm, vif)) {
1045 cmd->channel_opt[0].flags =
1046 cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS |
1047 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
1048 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD);
1049 cmd->channel_opt[0].non_ebs_ratio =
1050 cpu_to_le16(IWL_DENSE_EBS_SCAN_RATIO);
1051 cmd->channel_opt[1].flags =
1052 cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS |
1053 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
1054 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD);
1055 cmd->channel_opt[1].non_ebs_ratio =
1056 cpu_to_le16(IWL_SPARSE_EBS_SCAN_RATIO);
1057 }
1058
1059 iwl_mvm_lmac_scan_cfg_channels(mvm, params->channels,
1060 params->n_channels, ssid_bitmap, cmd);
1061
1062 iwl_mvm_scan_set_legacy_probe_req(preq, &params->preq);
1063
1064 return 0;
1065 }
1066
1067 static int rate_to_scan_rate_flag(unsigned int rate)
1068 {
1069 static const int rate_to_scan_rate[IWL_RATE_COUNT] = {
1070 [IWL_RATE_1M_INDEX] = SCAN_CONFIG_RATE_1M,
1071 [IWL_RATE_2M_INDEX] = SCAN_CONFIG_RATE_2M,
1072 [IWL_RATE_5M_INDEX] = SCAN_CONFIG_RATE_5M,
1073 [IWL_RATE_11M_INDEX] = SCAN_CONFIG_RATE_11M,
1074 [IWL_RATE_6M_INDEX] = SCAN_CONFIG_RATE_6M,
1075 [IWL_RATE_9M_INDEX] = SCAN_CONFIG_RATE_9M,
1076 [IWL_RATE_12M_INDEX] = SCAN_CONFIG_RATE_12M,
1077 [IWL_RATE_18M_INDEX] = SCAN_CONFIG_RATE_18M,
1078 [IWL_RATE_24M_INDEX] = SCAN_CONFIG_RATE_24M,
1079 [IWL_RATE_36M_INDEX] = SCAN_CONFIG_RATE_36M,
1080 [IWL_RATE_48M_INDEX] = SCAN_CONFIG_RATE_48M,
1081 [IWL_RATE_54M_INDEX] = SCAN_CONFIG_RATE_54M,
1082 };
1083
1084 return rate_to_scan_rate[rate];
1085 }
1086
1087 static __le32 iwl_mvm_scan_config_rates(struct iwl_mvm *mvm)
1088 {
1089 struct ieee80211_supported_band *band;
1090 unsigned int rates = 0;
1091 int i;
1092
1093 band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ];
1094 for (i = 0; i < band->n_bitrates; i++)
1095 rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value);
1096 band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ];
1097 for (i = 0; i < band->n_bitrates; i++)
1098 rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value);
1099
1100 /* Set both basic rates and supported rates */
1101 rates |= SCAN_CONFIG_SUPPORTED_RATE(rates);
1102
1103 return cpu_to_le32(rates);
1104 }
1105
1106 static void iwl_mvm_fill_scan_dwell(struct iwl_mvm *mvm,
1107 struct iwl_scan_dwell *dwell)
1108 {
1109 dwell->active = IWL_SCAN_DWELL_ACTIVE;
1110 dwell->passive = IWL_SCAN_DWELL_PASSIVE;
1111 dwell->fragmented = IWL_SCAN_DWELL_FRAGMENTED;
1112 dwell->extended = IWL_SCAN_DWELL_EXTENDED;
1113 }
1114
1115 static void iwl_mvm_fill_channels(struct iwl_mvm *mvm, u8 *channels,
1116 u32 max_channels)
1117 {
1118 struct ieee80211_supported_band *band;
1119 int i, j = 0;
1120
1121 band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ];
1122 for (i = 0; i < band->n_channels && j < max_channels; i++, j++)
1123 channels[j] = band->channels[i].hw_value;
1124 band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ];
1125 for (i = 0; i < band->n_channels && j < max_channels; i++, j++)
1126 channels[j] = band->channels[i].hw_value;
1127 }
1128
1129 static void iwl_mvm_fill_scan_config_v1(struct iwl_mvm *mvm, void *config,
1130 u32 flags, u8 channel_flags,
1131 u32 max_channels)
1132 {
1133 enum iwl_mvm_scan_type type = iwl_mvm_get_scan_type(mvm, NULL);
1134 struct iwl_scan_config_v1 *cfg = config;
1135
1136 cfg->flags = cpu_to_le32(flags);
1137 cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm));
1138 cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm));
1139 cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm);
1140 cfg->out_of_channel_time = cpu_to_le32(scan_timing[type].max_out_time);
1141 cfg->suspend_time = cpu_to_le32(scan_timing[type].suspend_time);
1142
1143 iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell);
1144
1145 memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN);
1146
1147 cfg->bcast_sta_id = mvm->aux_sta.sta_id;
1148 cfg->channel_flags = channel_flags;
1149
1150 iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels);
1151 }
1152
1153 static void iwl_mvm_fill_scan_config_v2(struct iwl_mvm *mvm, void *config,
1154 u32 flags, u8 channel_flags,
1155 u32 max_channels)
1156 {
1157 struct iwl_scan_config_v2 *cfg = config;
1158
1159 cfg->flags = cpu_to_le32(flags);
1160 cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm));
1161 cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm));
1162 cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm);
1163
1164 if (iwl_mvm_is_cdb_supported(mvm)) {
1165 enum iwl_mvm_scan_type lb_type, hb_type;
1166
1167 lb_type = iwl_mvm_get_scan_type_band(mvm, NULL,
1168 NL80211_BAND_2GHZ);
1169 hb_type = iwl_mvm_get_scan_type_band(mvm, NULL,
1170 NL80211_BAND_5GHZ);
1171
1172 cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] =
1173 cpu_to_le32(scan_timing[lb_type].max_out_time);
1174 cfg->suspend_time[SCAN_LB_LMAC_IDX] =
1175 cpu_to_le32(scan_timing[lb_type].suspend_time);
1176
1177 cfg->out_of_channel_time[SCAN_HB_LMAC_IDX] =
1178 cpu_to_le32(scan_timing[hb_type].max_out_time);
1179 cfg->suspend_time[SCAN_HB_LMAC_IDX] =
1180 cpu_to_le32(scan_timing[hb_type].suspend_time);
1181 } else {
1182 enum iwl_mvm_scan_type type =
1183 iwl_mvm_get_scan_type(mvm, NULL);
1184
1185 cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] =
1186 cpu_to_le32(scan_timing[type].max_out_time);
1187 cfg->suspend_time[SCAN_LB_LMAC_IDX] =
1188 cpu_to_le32(scan_timing[type].suspend_time);
1189 }
1190
1191 iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell);
1192
1193 memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN);
1194
1195 cfg->bcast_sta_id = mvm->aux_sta.sta_id;
1196 cfg->channel_flags = channel_flags;
1197
1198 iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels);
1199 }
1200
1201 static int iwl_mvm_legacy_config_scan(struct iwl_mvm *mvm)
1202 {
1203 void *cfg;
1204 int ret, cmd_size;
1205 struct iwl_host_cmd cmd = {
1206 .id = iwl_cmd_id(SCAN_CFG_CMD, IWL_ALWAYS_LONG_GROUP, 0),
1207 };
1208 enum iwl_mvm_scan_type type;
1209 enum iwl_mvm_scan_type hb_type = IWL_SCAN_TYPE_NOT_SET;
1210 int num_channels =
1211 mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels +
1212 mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels;
1213 u32 flags;
1214 u8 channel_flags;
1215
1216 if (WARN_ON(num_channels > mvm->fw->ucode_capa.n_scan_channels))
1217 num_channels = mvm->fw->ucode_capa.n_scan_channels;
1218
1219 if (iwl_mvm_is_cdb_supported(mvm)) {
1220 type = iwl_mvm_get_scan_type_band(mvm, NULL,
1221 NL80211_BAND_2GHZ);
1222 hb_type = iwl_mvm_get_scan_type_band(mvm, NULL,
1223 NL80211_BAND_5GHZ);
1224 if (type == mvm->scan_type && hb_type == mvm->hb_scan_type)
1225 return 0;
1226 } else {
1227 type = iwl_mvm_get_scan_type(mvm, NULL);
1228 if (type == mvm->scan_type)
1229 return 0;
1230 }
1231
1232 if (iwl_mvm_cdb_scan_api(mvm))
1233 cmd_size = sizeof(struct iwl_scan_config_v2);
1234 else
1235 cmd_size = sizeof(struct iwl_scan_config_v1);
1236 cmd_size += mvm->fw->ucode_capa.n_scan_channels;
1237
1238 cfg = kzalloc(cmd_size, GFP_KERNEL);
1239 if (!cfg)
1240 return -ENOMEM;
1241
1242 flags = SCAN_CONFIG_FLAG_ACTIVATE |
1243 SCAN_CONFIG_FLAG_ALLOW_CHUB_REQS |
1244 SCAN_CONFIG_FLAG_SET_TX_CHAINS |
1245 SCAN_CONFIG_FLAG_SET_RX_CHAINS |
1246 SCAN_CONFIG_FLAG_SET_AUX_STA_ID |
1247 SCAN_CONFIG_FLAG_SET_ALL_TIMES |
1248 SCAN_CONFIG_FLAG_SET_LEGACY_RATES |
1249 SCAN_CONFIG_FLAG_SET_MAC_ADDR |
1250 SCAN_CONFIG_FLAG_SET_CHANNEL_FLAGS |
1251 SCAN_CONFIG_N_CHANNELS(num_channels) |
1252 (iwl_mvm_is_scan_fragmented(type) ?
1253 SCAN_CONFIG_FLAG_SET_FRAGMENTED :
1254 SCAN_CONFIG_FLAG_CLEAR_FRAGMENTED);
1255
1256 channel_flags = IWL_CHANNEL_FLAG_EBS |
1257 IWL_CHANNEL_FLAG_ACCURATE_EBS |
1258 IWL_CHANNEL_FLAG_EBS_ADD |
1259 IWL_CHANNEL_FLAG_PRE_SCAN_PASSIVE2ACTIVE;
1260
1261 /*
1262 * Check for fragmented scan on LMAC2 - high band.
1263 * LMAC1 - low band is checked above.
1264 */
1265 if (iwl_mvm_cdb_scan_api(mvm)) {
1266 if (iwl_mvm_is_cdb_supported(mvm))
1267 flags |= (iwl_mvm_is_scan_fragmented(hb_type)) ?
1268 SCAN_CONFIG_FLAG_SET_LMAC2_FRAGMENTED :
1269 SCAN_CONFIG_FLAG_CLEAR_LMAC2_FRAGMENTED;
1270 iwl_mvm_fill_scan_config_v2(mvm, cfg, flags, channel_flags,
1271 num_channels);
1272 } else {
1273 iwl_mvm_fill_scan_config_v1(mvm, cfg, flags, channel_flags,
1274 num_channels);
1275 }
1276
1277 cmd.data[0] = cfg;
1278 cmd.len[0] = cmd_size;
1279 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
1280
1281 IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n");
1282
1283 ret = iwl_mvm_send_cmd(mvm, &cmd);
1284 if (!ret) {
1285 mvm->scan_type = type;
1286 mvm->hb_scan_type = hb_type;
1287 }
1288
1289 kfree(cfg);
1290 return ret;
1291 }
1292
1293 int iwl_mvm_config_scan(struct iwl_mvm *mvm)
1294 {
1295 struct iwl_scan_config cfg;
1296 struct iwl_host_cmd cmd = {
1297 .id = iwl_cmd_id(SCAN_CFG_CMD, IWL_ALWAYS_LONG_GROUP, 0),
1298 .len[0] = sizeof(cfg),
1299 .data[0] = &cfg,
1300 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1301 };
1302
1303 if (!iwl_mvm_is_reduced_config_scan_supported(mvm))
1304 return iwl_mvm_legacy_config_scan(mvm);
1305
1306 memset(&cfg, 0, sizeof(cfg));
1307
1308 cfg.bcast_sta_id = mvm->aux_sta.sta_id;
1309 cfg.tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm));
1310 cfg.rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm));
1311
1312 IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n");
1313
1314 return iwl_mvm_send_cmd(mvm, &cmd);
1315 }
1316
1317 static int iwl_mvm_scan_uid_by_status(struct iwl_mvm *mvm, int status)
1318 {
1319 int i;
1320
1321 for (i = 0; i < mvm->max_scans; i++)
1322 if (mvm->scan_uid_status[i] == status)
1323 return i;
1324
1325 return -ENOENT;
1326 }
1327
1328 static void iwl_mvm_scan_umac_dwell(struct iwl_mvm *mvm,
1329 struct iwl_scan_req_umac *cmd,
1330 struct iwl_mvm_scan_params *params)
1331 {
1332 struct iwl_mvm_scan_timing_params *timing, *hb_timing;
1333 u8 active_dwell, passive_dwell;
1334
1335 timing = &scan_timing[params->type];
1336 active_dwell = params->measurement_dwell ?
1337 params->measurement_dwell : IWL_SCAN_DWELL_ACTIVE;
1338 passive_dwell = params->measurement_dwell ?
1339 params->measurement_dwell : IWL_SCAN_DWELL_PASSIVE;
1340
1341 if (iwl_mvm_is_adaptive_dwell_supported(mvm)) {
1342 cmd->v7.adwell_default_n_aps_social =
1343 IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL;
1344 cmd->v7.adwell_default_n_aps =
1345 IWL_SCAN_ADWELL_DEFAULT_LB_N_APS;
1346
1347 if (iwl_mvm_is_adwell_hb_ap_num_supported(mvm))
1348 cmd->v9.adwell_default_hb_n_aps =
1349 IWL_SCAN_ADWELL_DEFAULT_HB_N_APS;
1350
1351 /* if custom max budget was configured with debugfs */
1352 if (IWL_MVM_ADWELL_MAX_BUDGET)
1353 cmd->v7.adwell_max_budget =
1354 cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET);
1355 else if (params->ssids && params->ssids[0].ssid_len)
1356 cmd->v7.adwell_max_budget =
1357 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN);
1358 else
1359 cmd->v7.adwell_max_budget =
1360 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN);
1361
1362 cmd->v7.scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1363 cmd->v7.max_out_time[SCAN_LB_LMAC_IDX] =
1364 cpu_to_le32(timing->max_out_time);
1365 cmd->v7.suspend_time[SCAN_LB_LMAC_IDX] =
1366 cpu_to_le32(timing->suspend_time);
1367
1368 if (iwl_mvm_is_cdb_supported(mvm)) {
1369 hb_timing = &scan_timing[params->hb_type];
1370
1371 cmd->v7.max_out_time[SCAN_HB_LMAC_IDX] =
1372 cpu_to_le32(hb_timing->max_out_time);
1373 cmd->v7.suspend_time[SCAN_HB_LMAC_IDX] =
1374 cpu_to_le32(hb_timing->suspend_time);
1375 }
1376
1377 if (!iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) {
1378 cmd->v7.active_dwell = active_dwell;
1379 cmd->v7.passive_dwell = passive_dwell;
1380 cmd->v7.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED;
1381 } else {
1382 cmd->v8.active_dwell[SCAN_LB_LMAC_IDX] = active_dwell;
1383 cmd->v8.passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell;
1384 if (iwl_mvm_is_cdb_supported(mvm)) {
1385 cmd->v8.active_dwell[SCAN_HB_LMAC_IDX] =
1386 active_dwell;
1387 cmd->v8.passive_dwell[SCAN_HB_LMAC_IDX] =
1388 passive_dwell;
1389 }
1390 }
1391 } else {
1392 cmd->v1.extended_dwell = params->measurement_dwell ?
1393 params->measurement_dwell : IWL_SCAN_DWELL_EXTENDED;
1394 cmd->v1.active_dwell = active_dwell;
1395 cmd->v1.passive_dwell = passive_dwell;
1396 cmd->v1.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED;
1397
1398 if (iwl_mvm_is_cdb_supported(mvm)) {
1399 hb_timing = &scan_timing[params->hb_type];
1400
1401 cmd->v6.max_out_time[SCAN_HB_LMAC_IDX] =
1402 cpu_to_le32(hb_timing->max_out_time);
1403 cmd->v6.suspend_time[SCAN_HB_LMAC_IDX] =
1404 cpu_to_le32(hb_timing->suspend_time);
1405 }
1406
1407 if (iwl_mvm_cdb_scan_api(mvm)) {
1408 cmd->v6.scan_priority =
1409 cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1410 cmd->v6.max_out_time[SCAN_LB_LMAC_IDX] =
1411 cpu_to_le32(timing->max_out_time);
1412 cmd->v6.suspend_time[SCAN_LB_LMAC_IDX] =
1413 cpu_to_le32(timing->suspend_time);
1414 } else {
1415 cmd->v1.scan_priority =
1416 cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1417 cmd->v1.max_out_time =
1418 cpu_to_le32(timing->max_out_time);
1419 cmd->v1.suspend_time =
1420 cpu_to_le32(timing->suspend_time);
1421 }
1422 }
1423
1424 if (iwl_mvm_is_regular_scan(params))
1425 cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1426 else
1427 cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_2);
1428 }
1429
1430 static u32 iwl_mvm_scan_umac_ooc_priority(struct iwl_mvm_scan_params *params)
1431 {
1432 return iwl_mvm_is_regular_scan(params) ?
1433 IWL_SCAN_PRIORITY_EXT_6 :
1434 IWL_SCAN_PRIORITY_EXT_2;
1435 }
1436
1437 static void
1438 iwl_mvm_scan_umac_dwell_v10(struct iwl_mvm *mvm,
1439 struct iwl_scan_general_params_v10 *general_params,
1440 struct iwl_mvm_scan_params *params)
1441 {
1442 struct iwl_mvm_scan_timing_params *timing, *hb_timing;
1443 u8 active_dwell, passive_dwell;
1444
1445 timing = &scan_timing[params->type];
1446 active_dwell = params->measurement_dwell ?
1447 params->measurement_dwell : IWL_SCAN_DWELL_ACTIVE;
1448 passive_dwell = params->measurement_dwell ?
1449 params->measurement_dwell : IWL_SCAN_DWELL_PASSIVE;
1450
1451 general_params->adwell_default_social_chn =
1452 IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL;
1453 general_params->adwell_default_2g = IWL_SCAN_ADWELL_DEFAULT_LB_N_APS;
1454 general_params->adwell_default_5g = IWL_SCAN_ADWELL_DEFAULT_HB_N_APS;
1455
1456 /* if custom max budget was configured with debugfs */
1457 if (IWL_MVM_ADWELL_MAX_BUDGET)
1458 general_params->adwell_max_budget =
1459 cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET);
1460 else if (params->ssids && params->ssids[0].ssid_len)
1461 general_params->adwell_max_budget =
1462 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN);
1463 else
1464 general_params->adwell_max_budget =
1465 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN);
1466
1467 general_params->scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1468 general_params->max_out_of_time[SCAN_LB_LMAC_IDX] =
1469 cpu_to_le32(timing->max_out_time);
1470 general_params->suspend_time[SCAN_LB_LMAC_IDX] =
1471 cpu_to_le32(timing->suspend_time);
1472
1473 hb_timing = &scan_timing[params->hb_type];
1474
1475 general_params->max_out_of_time[SCAN_HB_LMAC_IDX] =
1476 cpu_to_le32(hb_timing->max_out_time);
1477 general_params->suspend_time[SCAN_HB_LMAC_IDX] =
1478 cpu_to_le32(hb_timing->suspend_time);
1479
1480 general_params->active_dwell[SCAN_LB_LMAC_IDX] = active_dwell;
1481 general_params->passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell;
1482 general_params->active_dwell[SCAN_HB_LMAC_IDX] = active_dwell;
1483 general_params->passive_dwell[SCAN_HB_LMAC_IDX] = passive_dwell;
1484 }
1485
1486 struct iwl_mvm_scan_channel_segment {
1487 u8 start_idx;
1488 u8 end_idx;
1489 u8 first_channel_id;
1490 u8 last_channel_id;
1491 u8 channel_spacing_shift;
1492 u8 band;
1493 };
1494
1495 static const struct iwl_mvm_scan_channel_segment scan_channel_segments[] = {
1496 {
1497 .start_idx = 0,
1498 .end_idx = 13,
1499 .first_channel_id = 1,
1500 .last_channel_id = 14,
1501 .channel_spacing_shift = 0,
1502 .band = PHY_BAND_24
1503 },
1504 {
1505 .start_idx = 14,
1506 .end_idx = 41,
1507 .first_channel_id = 36,
1508 .last_channel_id = 144,
1509 .channel_spacing_shift = 2,
1510 .band = PHY_BAND_5
1511 },
1512 {
1513 .start_idx = 42,
1514 .end_idx = 50,
1515 .first_channel_id = 149,
1516 .last_channel_id = 181,
1517 .channel_spacing_shift = 2,
1518 .band = PHY_BAND_5
1519 },
1520 };
1521
1522 static int iwl_mvm_scan_ch_and_band_to_idx(u8 channel_id, u8 band)
1523 {
1524 int i, index;
1525
1526 if (!channel_id)
1527 return -EINVAL;
1528
1529 for (i = 0; i < ARRAY_SIZE(scan_channel_segments); i++) {
1530 const struct iwl_mvm_scan_channel_segment *ch_segment =
1531 &scan_channel_segments[i];
1532 u32 ch_offset;
1533
1534 if (ch_segment->band != band ||
1535 ch_segment->first_channel_id > channel_id ||
1536 ch_segment->last_channel_id < channel_id)
1537 continue;
1538
1539 ch_offset = (channel_id - ch_segment->first_channel_id) >>
1540 ch_segment->channel_spacing_shift;
1541
1542 index = scan_channel_segments[i].start_idx + ch_offset;
1543 if (index < IWL_SCAN_NUM_CHANNELS)
1544 return index;
1545
1546 break;
1547 }
1548
1549 return -EINVAL;
1550 }
1551
1552 static const u8 p2p_go_friendly_chs[] = {
1553 36, 40, 44, 48, 149, 153, 157, 161, 165,
1554 };
1555
1556 static const u8 social_chs[] = {
1557 1, 6, 11
1558 };
1559
1560 static void iwl_mvm_scan_ch_add_n_aps_override(enum nl80211_iftype vif_type,
1561 u8 ch_id, u8 band, u8 *ch_bitmap,
1562 size_t bitmap_n_entries)
1563 {
1564 int i;
1565
1566 if (vif_type != NL80211_IFTYPE_P2P_DEVICE)
1567 return;
1568
1569 for (i = 0; i < ARRAY_SIZE(p2p_go_friendly_chs); i++) {
1570 if (p2p_go_friendly_chs[i] == ch_id) {
1571 int ch_idx, bitmap_idx;
1572
1573 ch_idx = iwl_mvm_scan_ch_and_band_to_idx(ch_id, band);
1574 if (ch_idx < 0)
1575 return;
1576
1577 bitmap_idx = ch_idx / 8;
1578 if (bitmap_idx >= bitmap_n_entries)
1579 return;
1580
1581 ch_idx = ch_idx % 8;
1582 ch_bitmap[bitmap_idx] |= BIT(ch_idx);
1583
1584 return;
1585 }
1586 }
1587 }
1588
1589 static u32 iwl_mvm_scan_ch_n_aps_flag(enum nl80211_iftype vif_type, u8 ch_id)
1590 {
1591 int i;
1592 u32 flags = 0;
1593
1594 if (vif_type != NL80211_IFTYPE_P2P_DEVICE)
1595 goto out;
1596
1597 for (i = 0; i < ARRAY_SIZE(p2p_go_friendly_chs); i++) {
1598 if (p2p_go_friendly_chs[i] == ch_id) {
1599 flags |= IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY_BIT;
1600 break;
1601 }
1602 }
1603
1604 if (flags)
1605 goto out;
1606
1607 for (i = 0; i < ARRAY_SIZE(social_chs); i++) {
1608 if (social_chs[i] == ch_id) {
1609 flags |= IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS_BIT;
1610 break;
1611 }
1612 }
1613
1614 out:
1615 return flags;
1616 }
1617
1618 static void
1619 iwl_mvm_umac_scan_cfg_channels(struct iwl_mvm *mvm,
1620 struct ieee80211_channel **channels,
1621 int n_channels, u32 flags,
1622 struct iwl_scan_channel_cfg_umac *channel_cfg)
1623 {
1624 int i;
1625
1626 for (i = 0; i < n_channels; i++) {
1627 channel_cfg[i].flags = cpu_to_le32(flags);
1628 channel_cfg[i].v1.channel_num = channels[i]->hw_value;
1629 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) {
1630 enum nl80211_band band = channels[i]->band;
1631
1632 channel_cfg[i].v2.band =
1633 iwl_mvm_phy_band_from_nl80211(band);
1634 channel_cfg[i].v2.iter_count = 1;
1635 channel_cfg[i].v2.iter_interval = 0;
1636 } else {
1637 channel_cfg[i].v1.iter_count = 1;
1638 channel_cfg[i].v1.iter_interval = 0;
1639 }
1640 }
1641 }
1642
1643 static void
1644 iwl_mvm_umac_scan_cfg_channels_v4(struct iwl_mvm *mvm,
1645 struct ieee80211_channel **channels,
1646 struct iwl_scan_channel_params_v4 *cp,
1647 int n_channels, u32 flags,
1648 enum nl80211_iftype vif_type)
1649 {
1650 u8 *bitmap = cp->adwell_ch_override_bitmap;
1651 size_t bitmap_n_entries = ARRAY_SIZE(cp->adwell_ch_override_bitmap);
1652 int i;
1653
1654 for (i = 0; i < n_channels; i++) {
1655 enum nl80211_band band = channels[i]->band;
1656 struct iwl_scan_channel_cfg_umac *cfg =
1657 &cp->channel_config[i];
1658
1659 cfg->flags = cpu_to_le32(flags);
1660 cfg->v2.channel_num = channels[i]->hw_value;
1661 cfg->v2.band = iwl_mvm_phy_band_from_nl80211(band);
1662 cfg->v2.iter_count = 1;
1663 cfg->v2.iter_interval = 0;
1664
1665 iwl_mvm_scan_ch_add_n_aps_override(vif_type,
1666 cfg->v2.channel_num,
1667 cfg->v2.band, bitmap,
1668 bitmap_n_entries);
1669 }
1670 }
1671
1672 static void
1673 iwl_mvm_umac_scan_cfg_channels_v6(struct iwl_mvm *mvm,
1674 struct ieee80211_channel **channels,
1675 struct iwl_scan_channel_params_v6 *cp,
1676 int n_channels, u32 flags,
1677 enum nl80211_iftype vif_type)
1678 {
1679 int i;
1680
1681 for (i = 0; i < n_channels; i++) {
1682 enum nl80211_band band = channels[i]->band;
1683 struct iwl_scan_channel_cfg_umac *cfg = &cp->channel_config[i];
1684 u32 n_aps_flag =
1685 iwl_mvm_scan_ch_n_aps_flag(vif_type,
1686 cfg->v2.channel_num);
1687
1688 cfg->flags = cpu_to_le32(flags | n_aps_flag);
1689 cfg->v2.channel_num = channels[i]->hw_value;
1690 cfg->v2.band = iwl_mvm_phy_band_from_nl80211(band);
1691 cfg->v2.iter_count = 1;
1692 cfg->v2.iter_interval = 0;
1693 }
1694 }
1695
1696 static u8 iwl_mvm_scan_umac_chan_flags_v2(struct iwl_mvm *mvm,
1697 struct iwl_mvm_scan_params *params,
1698 struct ieee80211_vif *vif)
1699 {
1700 u8 flags = 0;
1701
1702 flags |= IWL_SCAN_CHANNEL_FLAG_ENABLE_CHAN_ORDER;
1703
1704 if (iwl_mvm_scan_use_ebs(mvm, vif))
1705 flags |= IWL_SCAN_CHANNEL_FLAG_EBS |
1706 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
1707 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD;
1708
1709 /* set fragmented ebs for fragmented scan on HB channels */
1710 if (iwl_mvm_is_scan_fragmented(params->hb_type))
1711 flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG;
1712
1713 return flags;
1714 }
1715
1716 static u16 iwl_mvm_scan_umac_flags_v2(struct iwl_mvm *mvm,
1717 struct iwl_mvm_scan_params *params,
1718 struct ieee80211_vif *vif,
1719 int type)
1720 {
1721 u16 flags = 0;
1722
1723 if (params->n_ssids == 0)
1724 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FORCE_PASSIVE;
1725
1726 if (iwl_mvm_is_scan_fragmented(params->type))
1727 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1;
1728
1729 if (iwl_mvm_is_scan_fragmented(params->hb_type))
1730 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC2;
1731
1732 if (params->pass_all)
1733 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PASS_ALL;
1734 else
1735 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_MATCH;
1736
1737 if (!iwl_mvm_is_regular_scan(params))
1738 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PERIODIC;
1739
1740 if (params->measurement_dwell ||
1741 mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED)
1742 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_NTFY_ITER_COMPLETE;
1743
1744 if (IWL_MVM_ADWELL_ENABLE)
1745 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_ADAPTIVE_DWELL;
1746
1747 if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT)
1748 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PREEMPTIVE;
1749
1750 return flags;
1751 }
1752
1753 static u16 iwl_mvm_scan_umac_flags(struct iwl_mvm *mvm,
1754 struct iwl_mvm_scan_params *params,
1755 struct ieee80211_vif *vif)
1756 {
1757 u16 flags = 0;
1758
1759 if (params->n_ssids == 0)
1760 flags = IWL_UMAC_SCAN_GEN_FLAGS_PASSIVE;
1761
1762 if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0)
1763 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PRE_CONNECT;
1764
1765 if (iwl_mvm_is_scan_fragmented(params->type))
1766 flags |= IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED;
1767
1768 if (iwl_mvm_is_cdb_supported(mvm) &&
1769 iwl_mvm_is_scan_fragmented(params->hb_type))
1770 flags |= IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED;
1771
1772 if (iwl_mvm_rrm_scan_needed(mvm) &&
1773 fw_has_capa(&mvm->fw->ucode_capa,
1774 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
1775 flags |= IWL_UMAC_SCAN_GEN_FLAGS_RRM_ENABLED;
1776
1777 if (params->pass_all)
1778 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PASS_ALL;
1779 else
1780 flags |= IWL_UMAC_SCAN_GEN_FLAGS_MATCH;
1781
1782 if (!iwl_mvm_is_regular_scan(params))
1783 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PERIODIC;
1784
1785 if (params->measurement_dwell)
1786 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE;
1787
1788 #ifdef CONFIG_IWLWIFI_DEBUGFS
1789 if (mvm->scan_iter_notif_enabled)
1790 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE;
1791 #endif
1792
1793 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED)
1794 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE;
1795
1796 if (iwl_mvm_is_adaptive_dwell_supported(mvm) && IWL_MVM_ADWELL_ENABLE)
1797 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ADAPTIVE_DWELL;
1798
1799 /*
1800 * Extended dwell is relevant only for low band to start with, as it is
1801 * being used for social channles only (1, 6, 11), so we can check
1802 * only scan type on low band also for CDB.
1803 */
1804 if (iwl_mvm_is_regular_scan(params) &&
1805 vif->type != NL80211_IFTYPE_P2P_DEVICE &&
1806 !iwl_mvm_is_scan_fragmented(params->type) &&
1807 !iwl_mvm_is_adaptive_dwell_supported(mvm) &&
1808 !iwl_mvm_is_oce_supported(mvm))
1809 flags |= IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL;
1810
1811 if (iwl_mvm_is_oce_supported(mvm)) {
1812 if ((params->flags &
1813 NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE))
1814 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_HIGH_TX_RATE;
1815 /* Since IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL and
1816 * NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION shares
1817 * the same bit, we need to make sure that we use this bit here
1818 * only when IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL cannot be
1819 * used. */
1820 if ((params->flags &
1821 NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) &&
1822 !WARN_ON_ONCE(!iwl_mvm_is_adaptive_dwell_supported(mvm)))
1823 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_DEFER_SUPP;
1824 if ((params->flags & NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME))
1825 flags |= IWL_UMAC_SCAN_GEN_FLAGS_MAX_CHNL_TIME;
1826 }
1827
1828 return flags;
1829 }
1830
1831 static int
1832 iwl_mvm_fill_scan_sched_params(struct iwl_mvm_scan_params *params,
1833 struct iwl_scan_umac_schedule *schedule,
1834 __le16 *delay)
1835 {
1836 int i;
1837 if (WARN_ON(!params->n_scan_plans ||
1838 params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS))
1839 return -EINVAL;
1840
1841 for (i = 0; i < params->n_scan_plans; i++) {
1842 struct cfg80211_sched_scan_plan *scan_plan =
1843 &params->scan_plans[i];
1844
1845 schedule[i].iter_count = scan_plan->iterations;
1846 schedule[i].interval =
1847 cpu_to_le16(scan_plan->interval);
1848 }
1849
1850 /*
1851 * If the number of iterations of the last scan plan is set to
1852 * zero, it should run infinitely. However, this is not always the case.
1853 * For example, when regular scan is requested the driver sets one scan
1854 * plan with one iteration.
1855 */
1856 if (!schedule[params->n_scan_plans - 1].iter_count)
1857 schedule[params->n_scan_plans - 1].iter_count = 0xff;
1858
1859 *delay = cpu_to_le16(params->delay);
1860
1861 return 0;
1862 }
1863
1864 static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1865 struct iwl_mvm_scan_params *params,
1866 int type, int uid)
1867 {
1868 struct iwl_scan_req_umac *cmd = mvm->scan_cmd;
1869 struct iwl_scan_umac_chan_param *chan_param;
1870 void *cmd_data = iwl_mvm_get_scan_req_umac_data(mvm);
1871 void *sec_part = cmd_data + sizeof(struct iwl_scan_channel_cfg_umac) *
1872 mvm->fw->ucode_capa.n_scan_channels;
1873 struct iwl_scan_req_umac_tail_v2 *tail_v2 =
1874 (struct iwl_scan_req_umac_tail_v2 *)sec_part;
1875 struct iwl_scan_req_umac_tail_v1 *tail_v1;
1876 struct iwl_ssid_ie *direct_scan;
1877 int ret = 0;
1878 u32 ssid_bitmap = 0;
1879 u8 channel_flags = 0;
1880 u16 gen_flags;
1881 struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif);
1882
1883 chan_param = iwl_mvm_get_scan_req_umac_channel(mvm);
1884
1885 iwl_mvm_scan_umac_dwell(mvm, cmd, params);
1886
1887 mvm->scan_uid_status[uid] = type;
1888
1889 cmd->uid = cpu_to_le32(uid);
1890 gen_flags = iwl_mvm_scan_umac_flags(mvm, params, vif);
1891 cmd->general_flags = cpu_to_le16(gen_flags);
1892 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) {
1893 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED)
1894 cmd->v8.num_of_fragments[SCAN_LB_LMAC_IDX] =
1895 IWL_SCAN_NUM_OF_FRAGS;
1896 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED)
1897 cmd->v8.num_of_fragments[SCAN_HB_LMAC_IDX] =
1898 IWL_SCAN_NUM_OF_FRAGS;
1899
1900 cmd->v8.general_flags2 =
1901 IWL_UMAC_SCAN_GEN_FLAGS2_ALLOW_CHNL_REORDER;
1902 }
1903
1904 cmd->scan_start_mac_id = scan_vif->id;
1905
1906 if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT)
1907 cmd->flags = cpu_to_le32(IWL_UMAC_SCAN_FLAG_PREEMPTIVE);
1908
1909 if (iwl_mvm_scan_use_ebs(mvm, vif)) {
1910 channel_flags = IWL_SCAN_CHANNEL_FLAG_EBS |
1911 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
1912 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD;
1913
1914 /* set fragmented ebs for fragmented scan on HB channels */
1915 if (iwl_mvm_is_frag_ebs_supported(mvm)) {
1916 if (gen_flags &
1917 IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED ||
1918 (!iwl_mvm_is_cdb_supported(mvm) &&
1919 gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED))
1920 channel_flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG;
1921 }
1922 }
1923
1924 chan_param->flags = channel_flags;
1925 chan_param->count = params->n_channels;
1926
1927 ret = iwl_mvm_fill_scan_sched_params(params, tail_v2->schedule,
1928 &tail_v2->delay);
1929 if (ret)
1930 return ret;
1931
1932 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) {
1933 tail_v2->preq = params->preq;
1934 direct_scan = tail_v2->direct_scan;
1935 } else {
1936 tail_v1 = (struct iwl_scan_req_umac_tail_v1 *)sec_part;
1937 iwl_mvm_scan_set_legacy_probe_req(&tail_v1->preq,
1938 &params->preq);
1939 direct_scan = tail_v1->direct_scan;
1940 }
1941 iwl_scan_build_ssids(params, direct_scan, &ssid_bitmap);
1942 iwl_mvm_umac_scan_cfg_channels(mvm, params->channels,
1943 params->n_channels, ssid_bitmap,
1944 cmd_data);
1945 return 0;
1946 }
1947
1948 static void
1949 iwl_mvm_scan_umac_fill_general_p_v10(struct iwl_mvm *mvm,
1950 struct iwl_mvm_scan_params *params,
1951 struct ieee80211_vif *vif,
1952 struct iwl_scan_general_params_v10 *gp,
1953 u16 gen_flags)
1954 {
1955 struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif);
1956
1957 iwl_mvm_scan_umac_dwell_v10(mvm, gp, params);
1958
1959 gp->flags = cpu_to_le16(gen_flags);
1960
1961 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1)
1962 gp->num_of_fragments[SCAN_LB_LMAC_IDX] = IWL_SCAN_NUM_OF_FRAGS;
1963 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC2)
1964 gp->num_of_fragments[SCAN_HB_LMAC_IDX] = IWL_SCAN_NUM_OF_FRAGS;
1965
1966 gp->scan_start_mac_id = scan_vif->id;
1967 }
1968
1969 static void
1970 iwl_mvm_scan_umac_fill_probe_p_v3(struct iwl_mvm_scan_params *params,
1971 struct iwl_scan_probe_params_v3 *pp)
1972 {
1973 pp->preq = params->preq;
1974 pp->ssid_num = params->n_ssids;
1975 iwl_scan_build_ssids(params, pp->direct_scan, NULL);
1976 }
1977
1978 static void
1979 iwl_mvm_scan_umac_fill_probe_p_v4(struct iwl_mvm_scan_params *params,
1980 struct iwl_scan_probe_params_v4 *pp,
1981 u32 *bitmap_ssid)
1982 {
1983 pp->preq = params->preq;
1984 iwl_scan_build_ssids(params, pp->direct_scan, bitmap_ssid);
1985 }
1986
1987 static void
1988 iwl_mvm_scan_umac_fill_ch_p_v4(struct iwl_mvm *mvm,
1989 struct iwl_mvm_scan_params *params,
1990 struct ieee80211_vif *vif,
1991 struct iwl_scan_channel_params_v4 *cp,
1992 u32 channel_cfg_flags)
1993 {
1994 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif);
1995 cp->count = params->n_channels;
1996 cp->num_of_aps_override = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY;
1997
1998 iwl_mvm_umac_scan_cfg_channels_v4(mvm, params->channels, cp,
1999 params->n_channels,
2000 channel_cfg_flags,
2001 vif->type);
2002 }
2003
2004 static void
2005 iwl_mvm_scan_umac_fill_ch_p_v6(struct iwl_mvm *mvm,
2006 struct iwl_mvm_scan_params *params,
2007 struct ieee80211_vif *vif,
2008 struct iwl_scan_channel_params_v6 *cp,
2009 u32 channel_cfg_flags)
2010 {
2011 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif);
2012 cp->count = params->n_channels;
2013 cp->n_aps_override[0] = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY;
2014 cp->n_aps_override[1] = IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS;
2015
2016 iwl_mvm_umac_scan_cfg_channels_v6(mvm, params->channels, cp,
2017 params->n_channels,
2018 channel_cfg_flags,
2019 vif->type);
2020 }
2021
2022 static int iwl_mvm_scan_umac_v12(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2023 struct iwl_mvm_scan_params *params, int type,
2024 int uid)
2025 {
2026 struct iwl_scan_req_umac_v12 *cmd = mvm->scan_cmd;
2027 struct iwl_scan_req_params_v12 *scan_p = &cmd->scan_params;
2028 int ret;
2029 u16 gen_flags;
2030
2031 mvm->scan_uid_status[uid] = type;
2032
2033 cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(params));
2034 cmd->uid = cpu_to_le32(uid);
2035
2036 gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type);
2037 iwl_mvm_scan_umac_fill_general_p_v10(mvm, params, vif,
2038 &scan_p->general_params,
2039 gen_flags);
2040
2041 ret = iwl_mvm_fill_scan_sched_params(params,
2042 scan_p->periodic_params.schedule,
2043 &scan_p->periodic_params.delay);
2044 if (ret)
2045 return ret;
2046
2047 iwl_mvm_scan_umac_fill_probe_p_v3(params, &scan_p->probe_params);
2048 iwl_mvm_scan_umac_fill_ch_p_v4(mvm, params, vif,
2049 &scan_p->channel_params, 0);
2050
2051 return 0;
2052 }
2053
2054 static int iwl_mvm_scan_umac_v13(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2055 struct iwl_mvm_scan_params *params, int type,
2056 int uid)
2057 {
2058 struct iwl_scan_req_umac_v13 *cmd = mvm->scan_cmd;
2059 struct iwl_scan_req_params_v13 *scan_p = &cmd->scan_params;
2060 int ret;
2061 u16 gen_flags;
2062 u32 bitmap_ssid = 0;
2063
2064 mvm->scan_uid_status[uid] = type;
2065
2066 cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(params));
2067 cmd->uid = cpu_to_le32(uid);
2068
2069 gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type);
2070 iwl_mvm_scan_umac_fill_general_p_v10(mvm, params, vif,
2071 &scan_p->general_params,
2072 gen_flags);
2073
2074 ret = iwl_mvm_fill_scan_sched_params(params,
2075 scan_p->periodic_params.schedule,
2076 &scan_p->periodic_params.delay);
2077 if (ret)
2078 return ret;
2079
2080 iwl_mvm_scan_umac_fill_probe_p_v4(params, &scan_p->probe_params,
2081 &bitmap_ssid);
2082 iwl_mvm_scan_umac_fill_ch_p_v4(mvm, params, vif,
2083 &scan_p->channel_params, bitmap_ssid);
2084
2085 return 0;
2086 }
2087
2088 static int iwl_mvm_scan_umac_v14(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2089 struct iwl_mvm_scan_params *params, int type,
2090 int uid)
2091 {
2092 struct iwl_scan_req_umac_v14 *cmd = mvm->scan_cmd;
2093 struct iwl_scan_req_params_v14 *scan_p = &cmd->scan_params;
2094 int ret;
2095 u16 gen_flags;
2096 u32 bitmap_ssid = 0;
2097
2098 mvm->scan_uid_status[uid] = type;
2099
2100 cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(params));
2101 cmd->uid = cpu_to_le32(uid);
2102
2103 gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type);
2104 iwl_mvm_scan_umac_fill_general_p_v10(mvm, params, vif,
2105 &scan_p->general_params,
2106 gen_flags);
2107
2108 ret = iwl_mvm_fill_scan_sched_params(params,
2109 scan_p->periodic_params.schedule,
2110 &scan_p->periodic_params.delay);
2111 if (ret)
2112 return ret;
2113
2114 iwl_mvm_scan_umac_fill_probe_p_v4(params, &scan_p->probe_params,
2115 &bitmap_ssid);
2116 iwl_mvm_scan_umac_fill_ch_p_v6(mvm, params, vif,
2117 &scan_p->channel_params, bitmap_ssid);
2118
2119 return 0;
2120 }
2121
2122 static int iwl_mvm_num_scans(struct iwl_mvm *mvm)
2123 {
2124 return hweight32(mvm->scan_status & IWL_MVM_SCAN_MASK);
2125 }
2126
2127 static int iwl_mvm_check_running_scans(struct iwl_mvm *mvm, int type)
2128 {
2129 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
2130 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
2131
2132 /* This looks a bit arbitrary, but the idea is that if we run
2133 * out of possible simultaneous scans and the userspace is
2134 * trying to run a scan type that is already running, we
2135 * return -EBUSY. But if the userspace wants to start a
2136 * different type of scan, we stop the opposite type to make
2137 * space for the new request. The reason is backwards
2138 * compatibility with old wpa_supplicant that wouldn't stop a
2139 * scheduled scan before starting a normal scan.
2140 */
2141
2142 /* FW supports only a single periodic scan */
2143 if ((type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) &&
2144 mvm->scan_status & (IWL_MVM_SCAN_SCHED | IWL_MVM_SCAN_NETDETECT))
2145 return -EBUSY;
2146
2147 if (iwl_mvm_num_scans(mvm) < mvm->max_scans)
2148 return 0;
2149
2150 /* Use a switch, even though this is a bitmask, so that more
2151 * than one bits set will fall in default and we will warn.
2152 */
2153 switch (type) {
2154 case IWL_MVM_SCAN_REGULAR:
2155 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK)
2156 return -EBUSY;
2157 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2158 case IWL_MVM_SCAN_SCHED:
2159 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK)
2160 return -EBUSY;
2161 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2162 case IWL_MVM_SCAN_NETDETECT:
2163 /* For non-unified images, there's no need to stop
2164 * anything for net-detect since the firmware is
2165 * restarted anyway. This way, any sched scans that
2166 * were running will be restarted when we resume.
2167 */
2168 if (!unified_image)
2169 return 0;
2170
2171 /* If this is a unified image and we ran out of scans,
2172 * we need to stop something. Prefer stopping regular
2173 * scans, because the results are useless at this
2174 * point, and we should be able to keep running
2175 * another scheduled scan while suspended.
2176 */
2177 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK)
2178 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR,
2179 true);
2180 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK)
2181 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED,
2182 true);
2183 /* Something is wrong if no scan was running but we
2184 * ran out of scans.
2185 */
2186 /* fall through */
2187 default:
2188 WARN_ON(1);
2189 break;
2190 }
2191
2192 return -EIO;
2193 }
2194
2195 #define SCAN_TIMEOUT 20000
2196
2197 void iwl_mvm_scan_timeout_wk(struct work_struct *work)
2198 {
2199 struct delayed_work *delayed_work = to_delayed_work(work);
2200 struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm,
2201 scan_timeout_dwork);
2202
2203 IWL_ERR(mvm, "regular scan timed out\n");
2204
2205 iwl_force_nmi(mvm->trans);
2206 }
2207
2208 static void iwl_mvm_fill_scan_type(struct iwl_mvm *mvm,
2209 struct iwl_mvm_scan_params *params,
2210 struct ieee80211_vif *vif)
2211 {
2212 if (iwl_mvm_is_cdb_supported(mvm)) {
2213 params->type =
2214 iwl_mvm_get_scan_type_band(mvm, vif,
2215 NL80211_BAND_2GHZ);
2216 params->hb_type =
2217 iwl_mvm_get_scan_type_band(mvm, vif,
2218 NL80211_BAND_5GHZ);
2219 } else {
2220 params->type = iwl_mvm_get_scan_type(mvm, vif);
2221 }
2222 }
2223
2224 struct iwl_scan_umac_handler {
2225 u8 version;
2226 int (*handler)(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2227 struct iwl_mvm_scan_params *params, int type, int uid);
2228 };
2229
2230 #define IWL_SCAN_UMAC_HANDLER(_ver) { \
2231 .version = _ver, \
2232 .handler = iwl_mvm_scan_umac_v##_ver, \
2233 }
2234
2235 static const struct iwl_scan_umac_handler iwl_scan_umac_handlers[] = {
2236 /* set the newest version first to shorten the list traverse time */
2237 IWL_SCAN_UMAC_HANDLER(14),
2238 IWL_SCAN_UMAC_HANDLER(13),
2239 IWL_SCAN_UMAC_HANDLER(12),
2240 };
2241
2242 static int iwl_mvm_build_scan_cmd(struct iwl_mvm *mvm,
2243 struct ieee80211_vif *vif,
2244 struct iwl_host_cmd *hcmd,
2245 struct iwl_mvm_scan_params *params,
2246 int type)
2247 {
2248 int uid, i;
2249 u8 scan_ver;
2250
2251 lockdep_assert_held(&mvm->mutex);
2252 memset(mvm->scan_cmd, 0, ksize(mvm->scan_cmd));
2253
2254 if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2255 hcmd->id = SCAN_OFFLOAD_REQUEST_CMD;
2256
2257 return iwl_mvm_scan_lmac(mvm, vif, params);
2258 }
2259
2260 uid = iwl_mvm_scan_uid_by_status(mvm, 0);
2261 if (uid < 0)
2262 return uid;
2263
2264 hcmd->id = iwl_cmd_id(SCAN_REQ_UMAC, IWL_ALWAYS_LONG_GROUP, 0);
2265
2266 scan_ver = iwl_mvm_lookup_cmd_ver(mvm->fw, IWL_ALWAYS_LONG_GROUP,
2267 SCAN_REQ_UMAC);
2268
2269 for (i = 0; i < ARRAY_SIZE(iwl_scan_umac_handlers); i++) {
2270 const struct iwl_scan_umac_handler *ver_handler =
2271 &iwl_scan_umac_handlers[i];
2272
2273 if (ver_handler->version != scan_ver)
2274 continue;
2275
2276 return ver_handler->handler(mvm, vif, params, type, uid);
2277 }
2278
2279 return iwl_mvm_scan_umac(mvm, vif, params, type, uid);
2280 }
2281
2282 int iwl_mvm_reg_scan_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2283 struct cfg80211_scan_request *req,
2284 struct ieee80211_scan_ies *ies)
2285 {
2286 struct iwl_host_cmd hcmd = {
2287 .len = { iwl_mvm_scan_size(mvm), },
2288 .data = { mvm->scan_cmd, },
2289 .dataflags = { IWL_HCMD_DFL_NOCOPY, },
2290 };
2291 struct iwl_mvm_scan_params params = {};
2292 int ret;
2293 struct cfg80211_sched_scan_plan scan_plan = { .iterations = 1 };
2294
2295 lockdep_assert_held(&mvm->mutex);
2296
2297 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) {
2298 IWL_ERR(mvm, "scan while LAR regdomain is not set\n");
2299 return -EBUSY;
2300 }
2301
2302 ret = iwl_mvm_check_running_scans(mvm, IWL_MVM_SCAN_REGULAR);
2303 if (ret)
2304 return ret;
2305
2306 /* we should have failed registration if scan_cmd was NULL */
2307 if (WARN_ON(!mvm->scan_cmd))
2308 return -ENOMEM;
2309
2310 if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels))
2311 return -ENOBUFS;
2312
2313 params.n_ssids = req->n_ssids;
2314 params.flags = req->flags;
2315 params.n_channels = req->n_channels;
2316 params.delay = 0;
2317 params.ssids = req->ssids;
2318 params.channels = req->channels;
2319 params.mac_addr = req->mac_addr;
2320 params.mac_addr_mask = req->mac_addr_mask;
2321 params.no_cck = req->no_cck;
2322 params.pass_all = true;
2323 params.n_match_sets = 0;
2324 params.match_sets = NULL;
2325
2326 params.scan_plans = &scan_plan;
2327 params.n_scan_plans = 1;
2328
2329 iwl_mvm_fill_scan_type(mvm, &params, vif);
2330
2331 ret = iwl_mvm_get_measurement_dwell(mvm, req, &params);
2332 if (ret < 0)
2333 return ret;
2334
2335 params.measurement_dwell = ret;
2336
2337 iwl_mvm_build_scan_probe(mvm, vif, ies, &params);
2338
2339 ret = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, &params,
2340 IWL_MVM_SCAN_REGULAR);
2341
2342 if (ret)
2343 return ret;
2344
2345 iwl_mvm_pause_tcm(mvm, false);
2346
2347 ret = iwl_mvm_send_cmd(mvm, &hcmd);
2348 if (ret) {
2349 /* If the scan failed, it usually means that the FW was unable
2350 * to allocate the time events. Warn on it, but maybe we
2351 * should try to send the command again with different params.
2352 */
2353 IWL_ERR(mvm, "Scan failed! ret %d\n", ret);
2354 iwl_mvm_resume_tcm(mvm);
2355 return ret;
2356 }
2357
2358 IWL_DEBUG_SCAN(mvm, "Scan request was sent successfully\n");
2359 mvm->scan_status |= IWL_MVM_SCAN_REGULAR;
2360 mvm->scan_vif = iwl_mvm_vif_from_mac80211(vif);
2361
2362 schedule_delayed_work(&mvm->scan_timeout_dwork,
2363 msecs_to_jiffies(SCAN_TIMEOUT));
2364
2365 return 0;
2366 }
2367
2368 int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm,
2369 struct ieee80211_vif *vif,
2370 struct cfg80211_sched_scan_request *req,
2371 struct ieee80211_scan_ies *ies,
2372 int type)
2373 {
2374 struct iwl_host_cmd hcmd = {
2375 .len = { iwl_mvm_scan_size(mvm), },
2376 .data = { mvm->scan_cmd, },
2377 .dataflags = { IWL_HCMD_DFL_NOCOPY, },
2378 };
2379 struct iwl_mvm_scan_params params = {};
2380 int ret;
2381
2382 lockdep_assert_held(&mvm->mutex);
2383
2384 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) {
2385 IWL_ERR(mvm, "sched-scan while LAR regdomain is not set\n");
2386 return -EBUSY;
2387 }
2388
2389 ret = iwl_mvm_check_running_scans(mvm, type);
2390 if (ret)
2391 return ret;
2392
2393 /* we should have failed registration if scan_cmd was NULL */
2394 if (WARN_ON(!mvm->scan_cmd))
2395 return -ENOMEM;
2396
2397 if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels))
2398 return -ENOBUFS;
2399
2400 params.n_ssids = req->n_ssids;
2401 params.flags = req->flags;
2402 params.n_channels = req->n_channels;
2403 params.ssids = req->ssids;
2404 params.channels = req->channels;
2405 params.mac_addr = req->mac_addr;
2406 params.mac_addr_mask = req->mac_addr_mask;
2407 params.no_cck = false;
2408 params.pass_all = iwl_mvm_scan_pass_all(mvm, req);
2409 params.n_match_sets = req->n_match_sets;
2410 params.match_sets = req->match_sets;
2411 if (!req->n_scan_plans)
2412 return -EINVAL;
2413
2414 params.n_scan_plans = req->n_scan_plans;
2415 params.scan_plans = req->scan_plans;
2416
2417 iwl_mvm_fill_scan_type(mvm, &params, vif);
2418
2419 /* In theory, LMAC scans can handle a 32-bit delay, but since
2420 * waiting for over 18 hours to start the scan is a bit silly
2421 * and to keep it aligned with UMAC scans (which only support
2422 * 16-bit delays), trim it down to 16-bits.
2423 */
2424 if (req->delay > U16_MAX) {
2425 IWL_DEBUG_SCAN(mvm,
2426 "delay value is > 16-bits, set to max possible\n");
2427 params.delay = U16_MAX;
2428 } else {
2429 params.delay = req->delay;
2430 }
2431
2432 ret = iwl_mvm_config_sched_scan_profiles(mvm, req);
2433 if (ret)
2434 return ret;
2435
2436 iwl_mvm_build_scan_probe(mvm, vif, ies, &params);
2437
2438 ret = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, &params, type);
2439
2440 if (ret)
2441 return ret;
2442
2443 ret = iwl_mvm_send_cmd(mvm, &hcmd);
2444 if (!ret) {
2445 IWL_DEBUG_SCAN(mvm,
2446 "Sched scan request was sent successfully\n");
2447 mvm->scan_status |= type;
2448 } else {
2449 /* If the scan failed, it usually means that the FW was unable
2450 * to allocate the time events. Warn on it, but maybe we
2451 * should try to send the command again with different params.
2452 */
2453 IWL_ERR(mvm, "Sched scan failed! ret %d\n", ret);
2454 }
2455
2456 return ret;
2457 }
2458
2459 void iwl_mvm_rx_umac_scan_complete_notif(struct iwl_mvm *mvm,
2460 struct iwl_rx_cmd_buffer *rxb)
2461 {
2462 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2463 struct iwl_umac_scan_complete *notif = (void *)pkt->data;
2464 u32 uid = __le32_to_cpu(notif->uid);
2465 bool aborted = (notif->status == IWL_SCAN_OFFLOAD_ABORTED);
2466
2467 if (WARN_ON(!(mvm->scan_uid_status[uid] & mvm->scan_status)))
2468 return;
2469
2470 /* if the scan is already stopping, we don't need to notify mac80211 */
2471 if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_REGULAR) {
2472 struct cfg80211_scan_info info = {
2473 .aborted = aborted,
2474 .scan_start_tsf = mvm->scan_start,
2475 };
2476
2477 memcpy(info.tsf_bssid, mvm->scan_vif->bssid, ETH_ALEN);
2478 ieee80211_scan_completed(mvm->hw, &info);
2479 mvm->scan_vif = NULL;
2480 cancel_delayed_work(&mvm->scan_timeout_dwork);
2481 iwl_mvm_resume_tcm(mvm);
2482 } else if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_SCHED) {
2483 ieee80211_sched_scan_stopped(mvm->hw);
2484 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
2485 }
2486
2487 mvm->scan_status &= ~mvm->scan_uid_status[uid];
2488 IWL_DEBUG_SCAN(mvm,
2489 "Scan completed, uid %u type %u, status %s, EBS status %s\n",
2490 uid, mvm->scan_uid_status[uid],
2491 notif->status == IWL_SCAN_OFFLOAD_COMPLETED ?
2492 "completed" : "aborted",
2493 iwl_mvm_ebs_status_str(notif->ebs_status));
2494 IWL_DEBUG_SCAN(mvm,
2495 "Last line %d, Last iteration %d, Time from last iteration %d\n",
2496 notif->last_schedule, notif->last_iter,
2497 __le32_to_cpu(notif->time_from_last_iter));
2498
2499 if (notif->ebs_status != IWL_SCAN_EBS_SUCCESS &&
2500 notif->ebs_status != IWL_SCAN_EBS_INACTIVE)
2501 mvm->last_ebs_successful = false;
2502
2503 mvm->scan_uid_status[uid] = 0;
2504 }
2505
2506 void iwl_mvm_rx_umac_scan_iter_complete_notif(struct iwl_mvm *mvm,
2507 struct iwl_rx_cmd_buffer *rxb)
2508 {
2509 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2510 struct iwl_umac_scan_iter_complete_notif *notif = (void *)pkt->data;
2511
2512 mvm->scan_start = le64_to_cpu(notif->start_tsf);
2513
2514 IWL_DEBUG_SCAN(mvm,
2515 "UMAC Scan iteration complete: status=0x%x scanned_channels=%d\n",
2516 notif->status, notif->scanned_channels);
2517
2518 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) {
2519 IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n");
2520 ieee80211_sched_scan_results(mvm->hw);
2521 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED;
2522 }
2523
2524 IWL_DEBUG_SCAN(mvm,
2525 "UMAC Scan iteration complete: scan started at %llu (TSF)\n",
2526 mvm->scan_start);
2527 }
2528
2529 static int iwl_mvm_umac_scan_abort(struct iwl_mvm *mvm, int type)
2530 {
2531 struct iwl_umac_scan_abort cmd = {};
2532 int uid, ret;
2533
2534 lockdep_assert_held(&mvm->mutex);
2535
2536 /* We should always get a valid index here, because we already
2537 * checked that this type of scan was running in the generic
2538 * code.
2539 */
2540 uid = iwl_mvm_scan_uid_by_status(mvm, type);
2541 if (WARN_ON_ONCE(uid < 0))
2542 return uid;
2543
2544 cmd.uid = cpu_to_le32(uid);
2545
2546 IWL_DEBUG_SCAN(mvm, "Sending scan abort, uid %u\n", uid);
2547
2548 ret = iwl_mvm_send_cmd_pdu(mvm,
2549 iwl_cmd_id(SCAN_ABORT_UMAC,
2550 IWL_ALWAYS_LONG_GROUP, 0),
2551 0, sizeof(cmd), &cmd);
2552 if (!ret)
2553 mvm->scan_uid_status[uid] = type << IWL_MVM_SCAN_STOPPING_SHIFT;
2554
2555 return ret;
2556 }
2557
2558 static int iwl_mvm_scan_stop_wait(struct iwl_mvm *mvm, int type)
2559 {
2560 struct iwl_notification_wait wait_scan_done;
2561 static const u16 scan_done_notif[] = { SCAN_COMPLETE_UMAC,
2562 SCAN_OFFLOAD_COMPLETE, };
2563 int ret;
2564
2565 lockdep_assert_held(&mvm->mutex);
2566
2567 iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_done,
2568 scan_done_notif,
2569 ARRAY_SIZE(scan_done_notif),
2570 NULL, NULL);
2571
2572 IWL_DEBUG_SCAN(mvm, "Preparing to stop scan, type %x\n", type);
2573
2574 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
2575 ret = iwl_mvm_umac_scan_abort(mvm, type);
2576 else
2577 ret = iwl_mvm_lmac_scan_abort(mvm);
2578
2579 if (ret) {
2580 IWL_DEBUG_SCAN(mvm, "couldn't stop scan type %d\n", type);
2581 iwl_remove_notification(&mvm->notif_wait, &wait_scan_done);
2582 return ret;
2583 }
2584
2585 return iwl_wait_notification(&mvm->notif_wait, &wait_scan_done,
2586 1 * HZ);
2587 }
2588
2589 #define IWL_SCAN_REQ_UMAC_HANDLE_SIZE(_ver) { \
2590 case (_ver): return sizeof(struct iwl_scan_req_umac_v##_ver); \
2591 }
2592
2593 static int iwl_scan_req_umac_get_size(u8 scan_ver)
2594 {
2595 switch (scan_ver) {
2596 IWL_SCAN_REQ_UMAC_HANDLE_SIZE(14);
2597 IWL_SCAN_REQ_UMAC_HANDLE_SIZE(13);
2598 IWL_SCAN_REQ_UMAC_HANDLE_SIZE(12);
2599 }
2600
2601 return 0;
2602 }
2603
2604 int iwl_mvm_scan_size(struct iwl_mvm *mvm)
2605 {
2606 int base_size, tail_size;
2607 u8 scan_ver = iwl_mvm_lookup_cmd_ver(mvm->fw, IWL_ALWAYS_LONG_GROUP,
2608 SCAN_REQ_UMAC);
2609
2610 base_size = iwl_scan_req_umac_get_size(scan_ver);
2611 if (base_size)
2612 return base_size;
2613
2614
2615 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm))
2616 base_size = IWL_SCAN_REQ_UMAC_SIZE_V8;
2617 else if (iwl_mvm_is_adaptive_dwell_supported(mvm))
2618 base_size = IWL_SCAN_REQ_UMAC_SIZE_V7;
2619 else if (iwl_mvm_cdb_scan_api(mvm))
2620 base_size = IWL_SCAN_REQ_UMAC_SIZE_V6;
2621 else
2622 base_size = IWL_SCAN_REQ_UMAC_SIZE_V1;
2623
2624 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2625 if (iwl_mvm_is_scan_ext_chan_supported(mvm))
2626 tail_size = sizeof(struct iwl_scan_req_umac_tail_v2);
2627 else
2628 tail_size = sizeof(struct iwl_scan_req_umac_tail_v1);
2629
2630 return base_size +
2631 sizeof(struct iwl_scan_channel_cfg_umac) *
2632 mvm->fw->ucode_capa.n_scan_channels +
2633 tail_size;
2634 }
2635 return sizeof(struct iwl_scan_req_lmac) +
2636 sizeof(struct iwl_scan_channel_cfg_lmac) *
2637 mvm->fw->ucode_capa.n_scan_channels +
2638 sizeof(struct iwl_scan_probe_req_v1);
2639 }
2640
2641 /*
2642 * This function is used in nic restart flow, to inform mac80211 about scans
2643 * that was aborted by restart flow or by an assert.
2644 */
2645 void iwl_mvm_report_scan_aborted(struct iwl_mvm *mvm)
2646 {
2647 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2648 int uid, i;
2649
2650 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_REGULAR);
2651 if (uid >= 0) {
2652 struct cfg80211_scan_info info = {
2653 .aborted = true,
2654 };
2655
2656 ieee80211_scan_completed(mvm->hw, &info);
2657 mvm->scan_uid_status[uid] = 0;
2658 }
2659 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_SCHED);
2660 if (uid >= 0 && !mvm->fw_restart) {
2661 ieee80211_sched_scan_stopped(mvm->hw);
2662 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
2663 mvm->scan_uid_status[uid] = 0;
2664 }
2665
2666 /* We shouldn't have any UIDs still set. Loop over all the
2667 * UIDs to make sure there's nothing left there and warn if
2668 * any is found.
2669 */
2670 for (i = 0; i < mvm->max_scans; i++) {
2671 if (WARN_ONCE(mvm->scan_uid_status[i],
2672 "UMAC scan UID %d status was not cleaned\n",
2673 i))
2674 mvm->scan_uid_status[i] = 0;
2675 }
2676 } else {
2677 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) {
2678 struct cfg80211_scan_info info = {
2679 .aborted = true,
2680 };
2681
2682 ieee80211_scan_completed(mvm->hw, &info);
2683 }
2684
2685 /* Sched scan will be restarted by mac80211 in
2686 * restart_hw, so do not report if FW is about to be
2687 * restarted.
2688 */
2689 if ((mvm->scan_status & IWL_MVM_SCAN_SCHED) &&
2690 !mvm->fw_restart) {
2691 ieee80211_sched_scan_stopped(mvm->hw);
2692 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
2693 }
2694 }
2695 }
2696
2697 int iwl_mvm_scan_stop(struct iwl_mvm *mvm, int type, bool notify)
2698 {
2699 int ret;
2700
2701 if (!(mvm->scan_status & type))
2702 return 0;
2703
2704 if (iwl_mvm_is_radio_killed(mvm)) {
2705 ret = 0;
2706 goto out;
2707 }
2708
2709 ret = iwl_mvm_scan_stop_wait(mvm, type);
2710 if (!ret)
2711 mvm->scan_status |= type << IWL_MVM_SCAN_STOPPING_SHIFT;
2712 out:
2713 /* Clear the scan status so the next scan requests will
2714 * succeed and mark the scan as stopping, so that the Rx
2715 * handler doesn't do anything, as the scan was stopped from
2716 * above.
2717 */
2718 mvm->scan_status &= ~type;
2719
2720 if (type == IWL_MVM_SCAN_REGULAR) {
2721 cancel_delayed_work(&mvm->scan_timeout_dwork);
2722 if (notify) {
2723 struct cfg80211_scan_info info = {
2724 .aborted = true,
2725 };
2726
2727 ieee80211_scan_completed(mvm->hw, &info);
2728 }
2729 } else if (notify) {
2730 ieee80211_sched_scan_stopped(mvm->hw);
2731 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
2732 }
2733
2734 return ret;
2735 }
Linux with added FPC-III support