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1// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2/*
3 * Copyright (C) 2012-2014, 2018-2023 Intel Corporation
4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
5 * Copyright (C) 2016-2017 Intel Deutschland GmbH
6 */
7#include <linux/etherdevice.h>
8#include <net/mac80211.h>
9#include <linux/crc32.h>
10
11#include "mvm.h"
12#include "fw/api/scan.h"
13#include "iwl-io.h"
14
15#define IWL_DENSE_EBS_SCAN_RATIO 5
16#define IWL_SPARSE_EBS_SCAN_RATIO 1
17
18#define IWL_SCAN_DWELL_ACTIVE 10
19#define IWL_SCAN_DWELL_PASSIVE 110
20#define IWL_SCAN_DWELL_FRAGMENTED 44
21#define IWL_SCAN_DWELL_EXTENDED 90
22#define IWL_SCAN_NUM_OF_FRAGS 3
23
24/* adaptive dwell max budget time [TU] for full scan */
25#define IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN 300
26/* adaptive dwell max budget time [TU] for directed scan */
27#define IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN 100
28/* adaptive dwell default high band APs number */
29#define IWL_SCAN_ADWELL_DEFAULT_HB_N_APS 8
30/* adaptive dwell default low band APs number */
31#define IWL_SCAN_ADWELL_DEFAULT_LB_N_APS 2
32/* adaptive dwell default APs number in social channels (1, 6, 11) */
33#define IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL 10
34/* number of scan channels */
35#define IWL_SCAN_NUM_CHANNELS 112
36/* adaptive dwell number of APs override mask for p2p friendly GO */
37#define IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY_BIT BIT(20)
38/* adaptive dwell number of APs override mask for social channels */
39#define IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS_BIT BIT(21)
40/* adaptive dwell number of APs override for p2p friendly GO channels */
41#define IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY 10
42/* adaptive dwell number of APs override for social channels */
43#define IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS 2
44
45/* minimal number of 2GHz and 5GHz channels in the regular scan request */
46#define IWL_MVM_6GHZ_PASSIVE_SCAN_MIN_CHANS 4
47
48/* Number of iterations on the channel for mei filtered scan */
49#define IWL_MEI_SCAN_NUM_ITER 5U
50
51struct iwl_mvm_scan_timing_params {
52 u32 suspend_time;
53 u32 max_out_time;
54};
55
56static struct iwl_mvm_scan_timing_params scan_timing[] = {
57 [IWL_SCAN_TYPE_UNASSOC] = {
58 .suspend_time = 0,
59 .max_out_time = 0,
60 },
61 [IWL_SCAN_TYPE_WILD] = {
62 .suspend_time = 30,
63 .max_out_time = 120,
64 },
65 [IWL_SCAN_TYPE_MILD] = {
66 .suspend_time = 120,
67 .max_out_time = 120,
68 },
69 [IWL_SCAN_TYPE_FRAGMENTED] = {
70 .suspend_time = 95,
71 .max_out_time = 44,
72 },
73 [IWL_SCAN_TYPE_FAST_BALANCE] = {
74 .suspend_time = 30,
75 .max_out_time = 37,
76 },
77};
78
79struct iwl_mvm_scan_params {
80 /* For CDB this is low band scan type, for non-CDB - type. */
81 enum iwl_mvm_scan_type type;
82 enum iwl_mvm_scan_type hb_type;
83 u32 n_channels;
84 u16 delay;
85 int n_ssids;
86 struct cfg80211_ssid *ssids;
87 struct ieee80211_channel **channels;
88 u32 flags;
89 u8 *mac_addr;
90 u8 *mac_addr_mask;
91 bool no_cck;
92 bool pass_all;
93 int n_match_sets;
94 struct iwl_scan_probe_req preq;
95 struct cfg80211_match_set *match_sets;
96 int n_scan_plans;
97 struct cfg80211_sched_scan_plan *scan_plans;
98 bool iter_notif;
99 struct cfg80211_scan_6ghz_params *scan_6ghz_params;
100 u32 n_6ghz_params;
101 bool scan_6ghz;
102 bool enable_6ghz_passive;
103 bool respect_p2p_go, respect_p2p_go_hb;
104 s8 tsf_report_link_id;
105 u8 bssid[ETH_ALEN] __aligned(2);
106};
107
108static inline void *iwl_mvm_get_scan_req_umac_data(struct iwl_mvm *mvm)
109{
110 struct iwl_scan_req_umac *cmd = mvm->scan_cmd;
111
112 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm))
113 return (void *)&cmd->v8.data;
114
115 if (iwl_mvm_is_adaptive_dwell_supported(mvm))
116 return (void *)&cmd->v7.data;
117
118 if (iwl_mvm_cdb_scan_api(mvm))
119 return (void *)&cmd->v6.data;
120
121 return (void *)&cmd->v1.data;
122}
123
124static inline struct iwl_scan_umac_chan_param *
125iwl_mvm_get_scan_req_umac_channel(struct iwl_mvm *mvm)
126{
127 struct iwl_scan_req_umac *cmd = mvm->scan_cmd;
128
129 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm))
130 return &cmd->v8.channel;
131
132 if (iwl_mvm_is_adaptive_dwell_supported(mvm))
133 return &cmd->v7.channel;
134
135 if (iwl_mvm_cdb_scan_api(mvm))
136 return &cmd->v6.channel;
137
138 return &cmd->v1.channel;
139}
140
141static u8 iwl_mvm_scan_rx_ant(struct iwl_mvm *mvm)
142{
143 if (mvm->scan_rx_ant != ANT_NONE)
144 return mvm->scan_rx_ant;
145 return iwl_mvm_get_valid_rx_ant(mvm);
146}
147
148static inline __le16 iwl_mvm_scan_rx_chain(struct iwl_mvm *mvm)
149{
150 u16 rx_chain;
151 u8 rx_ant;
152
153 rx_ant = iwl_mvm_scan_rx_ant(mvm);
154 rx_chain = rx_ant << PHY_RX_CHAIN_VALID_POS;
155 rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_MIMO_SEL_POS;
156 rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_SEL_POS;
157 rx_chain |= 0x1 << PHY_RX_CHAIN_DRIVER_FORCE_POS;
158 return cpu_to_le16(rx_chain);
159}
160
161static inline __le32
162iwl_mvm_scan_rate_n_flags(struct iwl_mvm *mvm, enum nl80211_band band,
163 bool no_cck)
164{
165 u32 tx_ant;
166
167 iwl_mvm_toggle_tx_ant(mvm, &mvm->scan_last_antenna_idx);
168 tx_ant = BIT(mvm->scan_last_antenna_idx) << RATE_MCS_ANT_POS;
169
170 if (band == NL80211_BAND_2GHZ && !no_cck)
171 return cpu_to_le32(IWL_RATE_1M_PLCP | RATE_MCS_CCK_MSK_V1 |
172 tx_ant);
173 else
174 return cpu_to_le32(IWL_RATE_6M_PLCP | tx_ant);
175}
176
177static enum iwl_mvm_traffic_load iwl_mvm_get_traffic_load(struct iwl_mvm *mvm)
178{
179 return mvm->tcm.result.global_load;
180}
181
182static enum iwl_mvm_traffic_load
183iwl_mvm_get_traffic_load_band(struct iwl_mvm *mvm, enum nl80211_band band)
184{
185 return mvm->tcm.result.band_load[band];
186}
187
188struct iwl_mvm_scan_iter_data {
189 u32 global_cnt;
190 struct ieee80211_vif *current_vif;
191 bool is_dcm_with_p2p_go;
192};
193
194static void iwl_mvm_scan_iterator(void *_data, u8 *mac,
195 struct ieee80211_vif *vif)
196{
197 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
198 struct iwl_mvm_scan_iter_data *data = _data;
199 struct iwl_mvm_vif *curr_mvmvif;
200
201 if (vif->type != NL80211_IFTYPE_P2P_DEVICE &&
202 mvmvif->deflink.phy_ctxt &&
203 mvmvif->deflink.phy_ctxt->id < NUM_PHY_CTX)
204 data->global_cnt += 1;
205
206 if (!data->current_vif || vif == data->current_vif)
207 return;
208
209 curr_mvmvif = iwl_mvm_vif_from_mac80211(data->current_vif);
210
211 if (vif->type == NL80211_IFTYPE_AP && vif->p2p &&
212 mvmvif->deflink.phy_ctxt && curr_mvmvif->deflink.phy_ctxt &&
213 mvmvif->deflink.phy_ctxt->id != curr_mvmvif->deflink.phy_ctxt->id)
214 data->is_dcm_with_p2p_go = true;
215}
216
217static enum
218iwl_mvm_scan_type _iwl_mvm_get_scan_type(struct iwl_mvm *mvm,
219 struct ieee80211_vif *vif,
220 enum iwl_mvm_traffic_load load,
221 bool low_latency)
222{
223 struct iwl_mvm_scan_iter_data data = {
224 .current_vif = vif,
225 .is_dcm_with_p2p_go = false,
226 .global_cnt = 0,
227 };
228
229 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
230 IEEE80211_IFACE_ITER_NORMAL,
231 iwl_mvm_scan_iterator,
232 &data);
233
234 if (!data.global_cnt)
235 return IWL_SCAN_TYPE_UNASSOC;
236
237 if (fw_has_api(&mvm->fw->ucode_capa,
238 IWL_UCODE_TLV_API_FRAGMENTED_SCAN)) {
239 if ((load == IWL_MVM_TRAFFIC_HIGH || low_latency) &&
240 (!vif || vif->type != NL80211_IFTYPE_P2P_DEVICE))
241 return IWL_SCAN_TYPE_FRAGMENTED;
242
243 /*
244 * in case of DCM with GO where BSS DTIM interval < 220msec
245 * set all scan requests as fast-balance scan
246 */
247 if (vif && vif->type == NL80211_IFTYPE_STATION &&
248 data.is_dcm_with_p2p_go &&
249 ((vif->bss_conf.beacon_int *
250 vif->bss_conf.dtim_period) < 220))
251 return IWL_SCAN_TYPE_FAST_BALANCE;
252 }
253
254 if (load >= IWL_MVM_TRAFFIC_MEDIUM || low_latency)
255 return IWL_SCAN_TYPE_MILD;
256
257 return IWL_SCAN_TYPE_WILD;
258}
259
260static enum
261iwl_mvm_scan_type iwl_mvm_get_scan_type(struct iwl_mvm *mvm,
262 struct ieee80211_vif *vif)
263{
264 enum iwl_mvm_traffic_load load;
265 bool low_latency;
266
267 load = iwl_mvm_get_traffic_load(mvm);
268 low_latency = iwl_mvm_low_latency(mvm);
269
270 return _iwl_mvm_get_scan_type(mvm, vif, load, low_latency);
271}
272
273static enum
274iwl_mvm_scan_type iwl_mvm_get_scan_type_band(struct iwl_mvm *mvm,
275 struct ieee80211_vif *vif,
276 enum nl80211_band band)
277{
278 enum iwl_mvm_traffic_load load;
279 bool low_latency;
280
281 load = iwl_mvm_get_traffic_load_band(mvm, band);
282 low_latency = iwl_mvm_low_latency_band(mvm, band);
283
284 return _iwl_mvm_get_scan_type(mvm, vif, load, low_latency);
285}
286
287static inline bool iwl_mvm_rrm_scan_needed(struct iwl_mvm *mvm)
288{
289 /* require rrm scan whenever the fw supports it */
290 return fw_has_capa(&mvm->fw->ucode_capa,
291 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT);
292}
293
294static int iwl_mvm_max_scan_ie_fw_cmd_room(struct iwl_mvm *mvm)
295{
296 int max_probe_len;
297
298 max_probe_len = SCAN_OFFLOAD_PROBE_REQ_SIZE;
299
300 /* we create the 802.11 header and SSID element */
301 max_probe_len -= 24 + 2;
302
303 /* DS parameter set element is added on 2.4GHZ band if required */
304 if (iwl_mvm_rrm_scan_needed(mvm))
305 max_probe_len -= 3;
306
307 return max_probe_len;
308}
309
310int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm)
311{
312 int max_ie_len = iwl_mvm_max_scan_ie_fw_cmd_room(mvm);
313
314 /* TODO: [BUG] This function should return the maximum allowed size of
315 * scan IEs, however the LMAC scan api contains both 2GHZ and 5GHZ IEs
316 * in the same command. So the correct implementation of this function
317 * is just iwl_mvm_max_scan_ie_fw_cmd_room() / 2. Currently the scan
318 * command has only 512 bytes and it would leave us with about 240
319 * bytes for scan IEs, which is clearly not enough. So meanwhile
320 * we will report an incorrect value. This may result in a failure to
321 * issue a scan in unified_scan_lmac and unified_sched_scan_lmac
322 * functions with -ENOBUFS, if a large enough probe will be provided.
323 */
324 return max_ie_len;
325}
326
327void iwl_mvm_rx_lmac_scan_iter_complete_notif(struct iwl_mvm *mvm,
328 struct iwl_rx_cmd_buffer *rxb)
329{
330 struct iwl_rx_packet *pkt = rxb_addr(rxb);
331 struct iwl_lmac_scan_complete_notif *notif = (void *)pkt->data;
332
333 IWL_DEBUG_SCAN(mvm,
334 "Scan offload iteration complete: status=0x%x scanned channels=%d\n",
335 notif->status, notif->scanned_channels);
336
337 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) {
338 IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n");
339 ieee80211_sched_scan_results(mvm->hw);
340 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED;
341 }
342}
343
344void iwl_mvm_rx_scan_match_found(struct iwl_mvm *mvm,
345 struct iwl_rx_cmd_buffer *rxb)
346{
347 IWL_DEBUG_SCAN(mvm, "Scheduled scan results\n");
348 ieee80211_sched_scan_results(mvm->hw);
349}
350
351static const char *iwl_mvm_ebs_status_str(enum iwl_scan_ebs_status status)
352{
353 switch (status) {
354 case IWL_SCAN_EBS_SUCCESS:
355 return "successful";
356 case IWL_SCAN_EBS_INACTIVE:
357 return "inactive";
358 case IWL_SCAN_EBS_FAILED:
359 case IWL_SCAN_EBS_CHAN_NOT_FOUND:
360 default:
361 return "failed";
362 }
363}
364
365void iwl_mvm_rx_lmac_scan_complete_notif(struct iwl_mvm *mvm,
366 struct iwl_rx_cmd_buffer *rxb)
367{
368 struct iwl_rx_packet *pkt = rxb_addr(rxb);
369 struct iwl_periodic_scan_complete *scan_notif = (void *)pkt->data;
370 bool aborted = (scan_notif->status == IWL_SCAN_OFFLOAD_ABORTED);
371
372 /* If this happens, the firmware has mistakenly sent an LMAC
373 * notification during UMAC scans -- warn and ignore it.
374 */
375 if (WARN_ON_ONCE(fw_has_capa(&mvm->fw->ucode_capa,
376 IWL_UCODE_TLV_CAPA_UMAC_SCAN)))
377 return;
378
379 /* scan status must be locked for proper checking */
380 lockdep_assert_held(&mvm->mutex);
381
382 /* We first check if we were stopping a scan, in which case we
383 * just clear the stopping flag. Then we check if it was a
384 * firmware initiated stop, in which case we need to inform
385 * mac80211.
386 * Note that we can have a stopping and a running scan
387 * simultaneously, but we can't have two different types of
388 * scans stopping or running at the same time (since LMAC
389 * doesn't support it).
390 */
391
392 if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_SCHED) {
393 WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR);
394
395 IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n",
396 aborted ? "aborted" : "completed",
397 iwl_mvm_ebs_status_str(scan_notif->ebs_status));
398 IWL_DEBUG_SCAN(mvm,
399 "Last line %d, Last iteration %d, Time after last iteration %d\n",
400 scan_notif->last_schedule_line,
401 scan_notif->last_schedule_iteration,
402 __le32_to_cpu(scan_notif->time_after_last_iter));
403
404 mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_SCHED;
405 } else if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR) {
406 IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s\n",
407 aborted ? "aborted" : "completed",
408 iwl_mvm_ebs_status_str(scan_notif->ebs_status));
409
410 mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_REGULAR;
411 } else if (mvm->scan_status & IWL_MVM_SCAN_SCHED) {
412 WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_REGULAR);
413
414 IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n",
415 aborted ? "aborted" : "completed",
416 iwl_mvm_ebs_status_str(scan_notif->ebs_status));
417 IWL_DEBUG_SCAN(mvm,
418 "Last line %d, Last iteration %d, Time after last iteration %d (FW)\n",
419 scan_notif->last_schedule_line,
420 scan_notif->last_schedule_iteration,
421 __le32_to_cpu(scan_notif->time_after_last_iter));
422
423 mvm->scan_status &= ~IWL_MVM_SCAN_SCHED;
424 ieee80211_sched_scan_stopped(mvm->hw);
425 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
426 } else if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) {
427 struct cfg80211_scan_info info = {
428 .aborted = aborted,
429 };
430
431 IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s (FW)\n",
432 aborted ? "aborted" : "completed",
433 iwl_mvm_ebs_status_str(scan_notif->ebs_status));
434
435 mvm->scan_status &= ~IWL_MVM_SCAN_REGULAR;
436 ieee80211_scan_completed(mvm->hw, &info);
437 cancel_delayed_work(&mvm->scan_timeout_dwork);
438 iwl_mvm_resume_tcm(mvm);
439 } else {
440 IWL_ERR(mvm,
441 "got scan complete notification but no scan is running\n");
442 }
443
444 mvm->last_ebs_successful =
445 scan_notif->ebs_status == IWL_SCAN_EBS_SUCCESS ||
446 scan_notif->ebs_status == IWL_SCAN_EBS_INACTIVE;
447}
448
449static int iwl_ssid_exist(u8 *ssid, u8 ssid_len, struct iwl_ssid_ie *ssid_list)
450{
451 int i;
452
453 for (i = 0; i < PROBE_OPTION_MAX; i++) {
454 if (!ssid_list[i].len)
455 break;
456 if (ssid_list[i].len == ssid_len &&
457 !memcmp(ssid_list->ssid, ssid, ssid_len))
458 return i;
459 }
460 return -1;
461}
462
463/* We insert the SSIDs in an inverted order, because the FW will
464 * invert it back.
465 */
466static void iwl_scan_build_ssids(struct iwl_mvm_scan_params *params,
467 struct iwl_ssid_ie *ssids,
468 u32 *ssid_bitmap)
469{
470 int i, j;
471 int index;
472 u32 tmp_bitmap = 0;
473
474 /*
475 * copy SSIDs from match list.
476 * iwl_config_sched_scan_profiles() uses the order of these ssids to
477 * config match list.
478 */
479 for (i = 0, j = params->n_match_sets - 1;
480 j >= 0 && i < PROBE_OPTION_MAX;
481 i++, j--) {
482 /* skip empty SSID matchsets */
483 if (!params->match_sets[j].ssid.ssid_len)
484 continue;
485 ssids[i].id = WLAN_EID_SSID;
486 ssids[i].len = params->match_sets[j].ssid.ssid_len;
487 memcpy(ssids[i].ssid, params->match_sets[j].ssid.ssid,
488 ssids[i].len);
489 }
490
491 /* add SSIDs from scan SSID list */
492 for (j = params->n_ssids - 1;
493 j >= 0 && i < PROBE_OPTION_MAX;
494 i++, j--) {
495 index = iwl_ssid_exist(params->ssids[j].ssid,
496 params->ssids[j].ssid_len,
497 ssids);
498 if (index < 0) {
499 ssids[i].id = WLAN_EID_SSID;
500 ssids[i].len = params->ssids[j].ssid_len;
501 memcpy(ssids[i].ssid, params->ssids[j].ssid,
502 ssids[i].len);
503 tmp_bitmap |= BIT(i);
504 } else {
505 tmp_bitmap |= BIT(index);
506 }
507 }
508 if (ssid_bitmap)
509 *ssid_bitmap = tmp_bitmap;
510}
511
512static int
513iwl_mvm_config_sched_scan_profiles(struct iwl_mvm *mvm,
514 struct cfg80211_sched_scan_request *req)
515{
516 struct iwl_scan_offload_profile *profile;
517 struct iwl_scan_offload_profile_cfg_v1 *profile_cfg_v1;
518 struct iwl_scan_offload_blocklist *blocklist;
519 struct iwl_scan_offload_profile_cfg_data *data;
520 int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw);
521 int profile_cfg_size = sizeof(*data) +
522 sizeof(*profile) * max_profiles;
523 struct iwl_host_cmd cmd = {
524 .id = SCAN_OFFLOAD_UPDATE_PROFILES_CMD,
525 .len[1] = profile_cfg_size,
526 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
527 .dataflags[1] = IWL_HCMD_DFL_NOCOPY,
528 };
529 int blocklist_len;
530 int i;
531 int ret;
532
533 if (WARN_ON(req->n_match_sets > max_profiles))
534 return -EIO;
535
536 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SHORT_BL)
537 blocklist_len = IWL_SCAN_SHORT_BLACKLIST_LEN;
538 else
539 blocklist_len = IWL_SCAN_MAX_BLACKLIST_LEN;
540
541 blocklist = kcalloc(blocklist_len, sizeof(*blocklist), GFP_KERNEL);
542 if (!blocklist)
543 return -ENOMEM;
544
545 profile_cfg_v1 = kzalloc(profile_cfg_size, GFP_KERNEL);
546 if (!profile_cfg_v1) {
547 ret = -ENOMEM;
548 goto free_blocklist;
549 }
550
551 cmd.data[0] = blocklist;
552 cmd.len[0] = sizeof(*blocklist) * blocklist_len;
553 cmd.data[1] = profile_cfg_v1;
554
555 /* if max_profile is MAX_PROFILES_V2, we have the new API */
556 if (max_profiles == IWL_SCAN_MAX_PROFILES_V2) {
557 struct iwl_scan_offload_profile_cfg *profile_cfg =
558 (struct iwl_scan_offload_profile_cfg *)profile_cfg_v1;
559
560 data = &profile_cfg->data;
561 } else {
562 data = &profile_cfg_v1->data;
563 }
564
565 /* No blocklist configuration */
566 data->num_profiles = req->n_match_sets;
567 data->active_clients = SCAN_CLIENT_SCHED_SCAN;
568 data->pass_match = SCAN_CLIENT_SCHED_SCAN;
569 data->match_notify = SCAN_CLIENT_SCHED_SCAN;
570
571 if (!req->n_match_sets || !req->match_sets[0].ssid.ssid_len)
572 data->any_beacon_notify = SCAN_CLIENT_SCHED_SCAN;
573
574 for (i = 0; i < req->n_match_sets; i++) {
575 profile = &profile_cfg_v1->profiles[i];
576 profile->ssid_index = i;
577 /* Support any cipher and auth algorithm */
578 profile->unicast_cipher = 0xff;
579 profile->auth_alg = IWL_AUTH_ALGO_UNSUPPORTED |
580 IWL_AUTH_ALGO_NONE | IWL_AUTH_ALGO_PSK | IWL_AUTH_ALGO_8021X |
581 IWL_AUTH_ALGO_SAE | IWL_AUTH_ALGO_8021X_SHA384 | IWL_AUTH_ALGO_OWE;
582 profile->network_type = IWL_NETWORK_TYPE_ANY;
583 profile->band_selection = IWL_SCAN_OFFLOAD_SELECT_ANY;
584 profile->client_bitmap = SCAN_CLIENT_SCHED_SCAN;
585 }
586
587 IWL_DEBUG_SCAN(mvm, "Sending scheduled scan profile config\n");
588
589 ret = iwl_mvm_send_cmd(mvm, &cmd);
590 kfree(profile_cfg_v1);
591free_blocklist:
592 kfree(blocklist);
593
594 return ret;
595}
596
597static bool iwl_mvm_scan_pass_all(struct iwl_mvm *mvm,
598 struct cfg80211_sched_scan_request *req)
599{
600 if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) {
601 IWL_DEBUG_SCAN(mvm,
602 "Sending scheduled scan with filtering, n_match_sets %d\n",
603 req->n_match_sets);
604 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
605 return false;
606 }
607
608 IWL_DEBUG_SCAN(mvm, "Sending Scheduled scan without filtering\n");
609
610 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED;
611 return true;
612}
613
614static int iwl_mvm_lmac_scan_abort(struct iwl_mvm *mvm)
615{
616 int ret;
617 struct iwl_host_cmd cmd = {
618 .id = SCAN_OFFLOAD_ABORT_CMD,
619 };
620 u32 status = CAN_ABORT_STATUS;
621
622 ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status);
623 if (ret)
624 return ret;
625
626 if (status != CAN_ABORT_STATUS) {
627 /*
628 * The scan abort will return 1 for success or
629 * 2 for "failure". A failure condition can be
630 * due to simply not being in an active scan which
631 * can occur if we send the scan abort before the
632 * microcode has notified us that a scan is completed.
633 */
634 IWL_DEBUG_SCAN(mvm, "SCAN OFFLOAD ABORT ret %d.\n", status);
635 ret = -ENOENT;
636 }
637
638 return ret;
639}
640
641static void iwl_mvm_scan_fill_tx_cmd(struct iwl_mvm *mvm,
642 struct iwl_scan_req_tx_cmd *tx_cmd,
643 bool no_cck)
644{
645 tx_cmd[0].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL |
646 TX_CMD_FLG_BT_DIS);
647 tx_cmd[0].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm,
648 NL80211_BAND_2GHZ,
649 no_cck);
650
651 if (!iwl_mvm_has_new_station_api(mvm->fw)) {
652 tx_cmd[0].sta_id = mvm->aux_sta.sta_id;
653 tx_cmd[1].sta_id = mvm->aux_sta.sta_id;
654
655 /*
656 * Fw doesn't use this sta anymore, pending deprecation via HOST API
657 * change
658 */
659 } else {
660 tx_cmd[0].sta_id = 0xff;
661 tx_cmd[1].sta_id = 0xff;
662 }
663
664 tx_cmd[1].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL |
665 TX_CMD_FLG_BT_DIS);
666
667 tx_cmd[1].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm,
668 NL80211_BAND_5GHZ,
669 no_cck);
670}
671
672static void
673iwl_mvm_lmac_scan_cfg_channels(struct iwl_mvm *mvm,
674 struct ieee80211_channel **channels,
675 int n_channels, u32 ssid_bitmap,
676 struct iwl_scan_req_lmac *cmd)
677{
678 struct iwl_scan_channel_cfg_lmac *channel_cfg = (void *)&cmd->data;
679 int i;
680
681 for (i = 0; i < n_channels; i++) {
682 channel_cfg[i].channel_num =
683 cpu_to_le16(channels[i]->hw_value);
684 channel_cfg[i].iter_count = cpu_to_le16(1);
685 channel_cfg[i].iter_interval = 0;
686 channel_cfg[i].flags =
687 cpu_to_le32(IWL_UNIFIED_SCAN_CHANNEL_PARTIAL |
688 ssid_bitmap);
689 }
690}
691
692static u8 *iwl_mvm_copy_and_insert_ds_elem(struct iwl_mvm *mvm, const u8 *ies,
693 size_t len, u8 *const pos)
694{
695 static const u8 before_ds_params[] = {
696 WLAN_EID_SSID,
697 WLAN_EID_SUPP_RATES,
698 WLAN_EID_REQUEST,
699 WLAN_EID_EXT_SUPP_RATES,
700 };
701 size_t offs;
702 u8 *newpos = pos;
703
704 if (!iwl_mvm_rrm_scan_needed(mvm)) {
705 memcpy(newpos, ies, len);
706 return newpos + len;
707 }
708
709 offs = ieee80211_ie_split(ies, len,
710 before_ds_params,
711 ARRAY_SIZE(before_ds_params),
712 0);
713
714 memcpy(newpos, ies, offs);
715 newpos += offs;
716
717 /* Add a placeholder for DS Parameter Set element */
718 *newpos++ = WLAN_EID_DS_PARAMS;
719 *newpos++ = 1;
720 *newpos++ = 0;
721
722 memcpy(newpos, ies + offs, len - offs);
723 newpos += len - offs;
724
725 return newpos;
726}
727
728#define WFA_TPC_IE_LEN 9
729
730static void iwl_mvm_add_tpc_report_ie(u8 *pos)
731{
732 pos[0] = WLAN_EID_VENDOR_SPECIFIC;
733 pos[1] = WFA_TPC_IE_LEN - 2;
734 pos[2] = (WLAN_OUI_MICROSOFT >> 16) & 0xff;
735 pos[3] = (WLAN_OUI_MICROSOFT >> 8) & 0xff;
736 pos[4] = WLAN_OUI_MICROSOFT & 0xff;
737 pos[5] = WLAN_OUI_TYPE_MICROSOFT_TPC;
738 pos[6] = 0;
739 /* pos[7] - tx power will be inserted by the FW */
740 pos[7] = 0;
741 pos[8] = 0;
742}
743
744static void
745iwl_mvm_build_scan_probe(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
746 struct ieee80211_scan_ies *ies,
747 struct iwl_mvm_scan_params *params)
748{
749 struct ieee80211_mgmt *frame = (void *)params->preq.buf;
750 u8 *pos, *newpos;
751 const u8 *mac_addr = params->flags & NL80211_SCAN_FLAG_RANDOM_ADDR ?
752 params->mac_addr : NULL;
753
754 /*
755 * Unfortunately, right now the offload scan doesn't support randomising
756 * within the firmware, so until the firmware API is ready we implement
757 * it in the driver. This means that the scan iterations won't really be
758 * random, only when it's restarted, but at least that helps a bit.
759 */
760 if (mac_addr)
761 get_random_mask_addr(frame->sa, mac_addr,
762 params->mac_addr_mask);
763 else
764 memcpy(frame->sa, vif->addr, ETH_ALEN);
765
766 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
767 eth_broadcast_addr(frame->da);
768 ether_addr_copy(frame->bssid, params->bssid);
769 frame->seq_ctrl = 0;
770
771 pos = frame->u.probe_req.variable;
772 *pos++ = WLAN_EID_SSID;
773 *pos++ = 0;
774
775 params->preq.mac_header.offset = 0;
776 params->preq.mac_header.len = cpu_to_le16(24 + 2);
777
778 /* Insert ds parameter set element on 2.4 GHz band */
779 newpos = iwl_mvm_copy_and_insert_ds_elem(mvm,
780 ies->ies[NL80211_BAND_2GHZ],
781 ies->len[NL80211_BAND_2GHZ],
782 pos);
783 params->preq.band_data[0].offset = cpu_to_le16(pos - params->preq.buf);
784 params->preq.band_data[0].len = cpu_to_le16(newpos - pos);
785 pos = newpos;
786
787 memcpy(pos, ies->ies[NL80211_BAND_5GHZ],
788 ies->len[NL80211_BAND_5GHZ]);
789 params->preq.band_data[1].offset = cpu_to_le16(pos - params->preq.buf);
790 params->preq.band_data[1].len =
791 cpu_to_le16(ies->len[NL80211_BAND_5GHZ]);
792 pos += ies->len[NL80211_BAND_5GHZ];
793
794 memcpy(pos, ies->ies[NL80211_BAND_6GHZ],
795 ies->len[NL80211_BAND_6GHZ]);
796 params->preq.band_data[2].offset = cpu_to_le16(pos - params->preq.buf);
797 params->preq.band_data[2].len =
798 cpu_to_le16(ies->len[NL80211_BAND_6GHZ]);
799 pos += ies->len[NL80211_BAND_6GHZ];
800 memcpy(pos, ies->common_ies, ies->common_ie_len);
801 params->preq.common_data.offset = cpu_to_le16(pos - params->preq.buf);
802
803 if (iwl_mvm_rrm_scan_needed(mvm) &&
804 !fw_has_capa(&mvm->fw->ucode_capa,
805 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) {
806 iwl_mvm_add_tpc_report_ie(pos + ies->common_ie_len);
807 params->preq.common_data.len = cpu_to_le16(ies->common_ie_len +
808 WFA_TPC_IE_LEN);
809 } else {
810 params->preq.common_data.len = cpu_to_le16(ies->common_ie_len);
811 }
812}
813
814static void iwl_mvm_scan_lmac_dwell(struct iwl_mvm *mvm,
815 struct iwl_scan_req_lmac *cmd,
816 struct iwl_mvm_scan_params *params)
817{
818 cmd->active_dwell = IWL_SCAN_DWELL_ACTIVE;
819 cmd->passive_dwell = IWL_SCAN_DWELL_PASSIVE;
820 cmd->fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED;
821 cmd->extended_dwell = IWL_SCAN_DWELL_EXTENDED;
822 cmd->max_out_time = cpu_to_le32(scan_timing[params->type].max_out_time);
823 cmd->suspend_time = cpu_to_le32(scan_timing[params->type].suspend_time);
824 cmd->scan_prio = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
825}
826
827static inline bool iwl_mvm_scan_fits(struct iwl_mvm *mvm, int n_ssids,
828 struct ieee80211_scan_ies *ies,
829 int n_channels)
830{
831 return ((n_ssids <= PROBE_OPTION_MAX) &&
832 (n_channels <= mvm->fw->ucode_capa.n_scan_channels) &
833 (ies->common_ie_len +
834 ies->len[NL80211_BAND_2GHZ] +
835 ies->len[NL80211_BAND_5GHZ] <=
836 iwl_mvm_max_scan_ie_fw_cmd_room(mvm)));
837}
838
839static inline bool iwl_mvm_scan_use_ebs(struct iwl_mvm *mvm,
840 struct ieee80211_vif *vif)
841{
842 const struct iwl_ucode_capabilities *capa = &mvm->fw->ucode_capa;
843 bool low_latency;
844
845 if (iwl_mvm_is_cdb_supported(mvm))
846 low_latency = iwl_mvm_low_latency_band(mvm, NL80211_BAND_5GHZ);
847 else
848 low_latency = iwl_mvm_low_latency(mvm);
849
850 /* We can only use EBS if:
851 * 1. the feature is supported;
852 * 2. the last EBS was successful;
853 * 3. if only single scan, the single scan EBS API is supported;
854 * 4. it's not a p2p find operation.
855 * 5. we are not in low latency mode,
856 * or if fragmented ebs is supported by the FW
857 */
858 return ((capa->flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT) &&
859 mvm->last_ebs_successful && IWL_MVM_ENABLE_EBS &&
860 vif->type != NL80211_IFTYPE_P2P_DEVICE &&
861 (!low_latency || iwl_mvm_is_frag_ebs_supported(mvm)));
862}
863
864static inline bool iwl_mvm_is_regular_scan(struct iwl_mvm_scan_params *params)
865{
866 return params->n_scan_plans == 1 &&
867 params->scan_plans[0].iterations == 1;
868}
869
870static bool iwl_mvm_is_scan_fragmented(enum iwl_mvm_scan_type type)
871{
872 return (type == IWL_SCAN_TYPE_FRAGMENTED ||
873 type == IWL_SCAN_TYPE_FAST_BALANCE);
874}
875
876static int iwl_mvm_scan_lmac_flags(struct iwl_mvm *mvm,
877 struct iwl_mvm_scan_params *params,
878 struct ieee80211_vif *vif)
879{
880 int flags = 0;
881
882 if (params->n_ssids == 0)
883 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE;
884
885 if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0)
886 flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION;
887
888 if (iwl_mvm_is_scan_fragmented(params->type))
889 flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED;
890
891 if (iwl_mvm_rrm_scan_needed(mvm) &&
892 fw_has_capa(&mvm->fw->ucode_capa,
893 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
894 flags |= IWL_MVM_LMAC_SCAN_FLAGS_RRM_ENABLED;
895
896 if (params->pass_all)
897 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL;
898 else
899 flags |= IWL_MVM_LMAC_SCAN_FLAG_MATCH;
900
901#ifdef CONFIG_IWLWIFI_DEBUGFS
902 if (mvm->scan_iter_notif_enabled)
903 flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE;
904#endif
905
906 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED)
907 flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE;
908
909 if (iwl_mvm_is_regular_scan(params) &&
910 vif->type != NL80211_IFTYPE_P2P_DEVICE &&
911 !iwl_mvm_is_scan_fragmented(params->type))
912 flags |= IWL_MVM_LMAC_SCAN_FLAG_EXTENDED_DWELL;
913
914 return flags;
915}
916
917static void
918iwl_mvm_scan_set_legacy_probe_req(struct iwl_scan_probe_req_v1 *p_req,
919 struct iwl_scan_probe_req *src_p_req)
920{
921 int i;
922
923 p_req->mac_header = src_p_req->mac_header;
924 for (i = 0; i < SCAN_NUM_BAND_PROBE_DATA_V_1; i++)
925 p_req->band_data[i] = src_p_req->band_data[i];
926 p_req->common_data = src_p_req->common_data;
927 memcpy(p_req->buf, src_p_req->buf, sizeof(p_req->buf));
928}
929
930static int iwl_mvm_scan_lmac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
931 struct iwl_mvm_scan_params *params)
932{
933 struct iwl_scan_req_lmac *cmd = mvm->scan_cmd;
934 struct iwl_scan_probe_req_v1 *preq =
935 (void *)(cmd->data + sizeof(struct iwl_scan_channel_cfg_lmac) *
936 mvm->fw->ucode_capa.n_scan_channels);
937 u32 ssid_bitmap = 0;
938 int i;
939 u8 band;
940
941 if (WARN_ON(params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS))
942 return -EINVAL;
943
944 iwl_mvm_scan_lmac_dwell(mvm, cmd, params);
945
946 cmd->rx_chain_select = iwl_mvm_scan_rx_chain(mvm);
947 cmd->iter_num = cpu_to_le32(1);
948 cmd->n_channels = (u8)params->n_channels;
949
950 cmd->delay = cpu_to_le32(params->delay);
951
952 cmd->scan_flags = cpu_to_le32(iwl_mvm_scan_lmac_flags(mvm, params,
953 vif));
954
955 band = iwl_mvm_phy_band_from_nl80211(params->channels[0]->band);
956 cmd->flags = cpu_to_le32(band);
957 cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP |
958 MAC_FILTER_IN_BEACON);
959 iwl_mvm_scan_fill_tx_cmd(mvm, cmd->tx_cmd, params->no_cck);
960 iwl_scan_build_ssids(params, cmd->direct_scan, &ssid_bitmap);
961
962 /* this API uses bits 1-20 instead of 0-19 */
963 ssid_bitmap <<= 1;
964
965 for (i = 0; i < params->n_scan_plans; i++) {
966 struct cfg80211_sched_scan_plan *scan_plan =
967 ¶ms->scan_plans[i];
968
969 cmd->schedule[i].delay =
970 cpu_to_le16(scan_plan->interval);
971 cmd->schedule[i].iterations = scan_plan->iterations;
972 cmd->schedule[i].full_scan_mul = 1;
973 }
974
975 /*
976 * If the number of iterations of the last scan plan is set to
977 * zero, it should run infinitely. However, this is not always the case.
978 * For example, when regular scan is requested the driver sets one scan
979 * plan with one iteration.
980 */
981 if (!cmd->schedule[i - 1].iterations)
982 cmd->schedule[i - 1].iterations = 0xff;
983
984 if (iwl_mvm_scan_use_ebs(mvm, vif)) {
985 cmd->channel_opt[0].flags =
986 cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS |
987 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
988 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD);
989 cmd->channel_opt[0].non_ebs_ratio =
990 cpu_to_le16(IWL_DENSE_EBS_SCAN_RATIO);
991 cmd->channel_opt[1].flags =
992 cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS |
993 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
994 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD);
995 cmd->channel_opt[1].non_ebs_ratio =
996 cpu_to_le16(IWL_SPARSE_EBS_SCAN_RATIO);
997 }
998
999 iwl_mvm_lmac_scan_cfg_channels(mvm, params->channels,
1000 params->n_channels, ssid_bitmap, cmd);
1001
1002 iwl_mvm_scan_set_legacy_probe_req(preq, ¶ms->preq);
1003
1004 return 0;
1005}
1006
1007static int rate_to_scan_rate_flag(unsigned int rate)
1008{
1009 static const int rate_to_scan_rate[IWL_RATE_COUNT] = {
1010 [IWL_RATE_1M_INDEX] = SCAN_CONFIG_RATE_1M,
1011 [IWL_RATE_2M_INDEX] = SCAN_CONFIG_RATE_2M,
1012 [IWL_RATE_5M_INDEX] = SCAN_CONFIG_RATE_5M,
1013 [IWL_RATE_11M_INDEX] = SCAN_CONFIG_RATE_11M,
1014 [IWL_RATE_6M_INDEX] = SCAN_CONFIG_RATE_6M,
1015 [IWL_RATE_9M_INDEX] = SCAN_CONFIG_RATE_9M,
1016 [IWL_RATE_12M_INDEX] = SCAN_CONFIG_RATE_12M,
1017 [IWL_RATE_18M_INDEX] = SCAN_CONFIG_RATE_18M,
1018 [IWL_RATE_24M_INDEX] = SCAN_CONFIG_RATE_24M,
1019 [IWL_RATE_36M_INDEX] = SCAN_CONFIG_RATE_36M,
1020 [IWL_RATE_48M_INDEX] = SCAN_CONFIG_RATE_48M,
1021 [IWL_RATE_54M_INDEX] = SCAN_CONFIG_RATE_54M,
1022 };
1023
1024 return rate_to_scan_rate[rate];
1025}
1026
1027static __le32 iwl_mvm_scan_config_rates(struct iwl_mvm *mvm)
1028{
1029 struct ieee80211_supported_band *band;
1030 unsigned int rates = 0;
1031 int i;
1032
1033 band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ];
1034 for (i = 0; i < band->n_bitrates; i++)
1035 rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value);
1036 band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ];
1037 for (i = 0; i < band->n_bitrates; i++)
1038 rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value);
1039
1040 /* Set both basic rates and supported rates */
1041 rates |= SCAN_CONFIG_SUPPORTED_RATE(rates);
1042
1043 return cpu_to_le32(rates);
1044}
1045
1046static void iwl_mvm_fill_scan_dwell(struct iwl_mvm *mvm,
1047 struct iwl_scan_dwell *dwell)
1048{
1049 dwell->active = IWL_SCAN_DWELL_ACTIVE;
1050 dwell->passive = IWL_SCAN_DWELL_PASSIVE;
1051 dwell->fragmented = IWL_SCAN_DWELL_FRAGMENTED;
1052 dwell->extended = IWL_SCAN_DWELL_EXTENDED;
1053}
1054
1055static void iwl_mvm_fill_channels(struct iwl_mvm *mvm, u8 *channels,
1056 u32 max_channels)
1057{
1058 struct ieee80211_supported_band *band;
1059 int i, j = 0;
1060
1061 band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ];
1062 for (i = 0; i < band->n_channels && j < max_channels; i++, j++)
1063 channels[j] = band->channels[i].hw_value;
1064 band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ];
1065 for (i = 0; i < band->n_channels && j < max_channels; i++, j++)
1066 channels[j] = band->channels[i].hw_value;
1067}
1068
1069static void iwl_mvm_fill_scan_config_v1(struct iwl_mvm *mvm, void *config,
1070 u32 flags, u8 channel_flags,
1071 u32 max_channels)
1072{
1073 enum iwl_mvm_scan_type type = iwl_mvm_get_scan_type(mvm, NULL);
1074 struct iwl_scan_config_v1 *cfg = config;
1075
1076 cfg->flags = cpu_to_le32(flags);
1077 cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm));
1078 cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm));
1079 cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm);
1080 cfg->out_of_channel_time = cpu_to_le32(scan_timing[type].max_out_time);
1081 cfg->suspend_time = cpu_to_le32(scan_timing[type].suspend_time);
1082
1083 iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell);
1084
1085 memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN);
1086
1087 /* This function should not be called when using ADD_STA ver >=12 */
1088 WARN_ON_ONCE(iwl_mvm_has_new_station_api(mvm->fw));
1089
1090 cfg->bcast_sta_id = mvm->aux_sta.sta_id;
1091 cfg->channel_flags = channel_flags;
1092
1093 iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels);
1094}
1095
1096static void iwl_mvm_fill_scan_config_v2(struct iwl_mvm *mvm, void *config,
1097 u32 flags, u8 channel_flags,
1098 u32 max_channels)
1099{
1100 struct iwl_scan_config_v2 *cfg = config;
1101
1102 cfg->flags = cpu_to_le32(flags);
1103 cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm));
1104 cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm));
1105 cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm);
1106
1107 if (iwl_mvm_is_cdb_supported(mvm)) {
1108 enum iwl_mvm_scan_type lb_type, hb_type;
1109
1110 lb_type = iwl_mvm_get_scan_type_band(mvm, NULL,
1111 NL80211_BAND_2GHZ);
1112 hb_type = iwl_mvm_get_scan_type_band(mvm, NULL,
1113 NL80211_BAND_5GHZ);
1114
1115 cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] =
1116 cpu_to_le32(scan_timing[lb_type].max_out_time);
1117 cfg->suspend_time[SCAN_LB_LMAC_IDX] =
1118 cpu_to_le32(scan_timing[lb_type].suspend_time);
1119
1120 cfg->out_of_channel_time[SCAN_HB_LMAC_IDX] =
1121 cpu_to_le32(scan_timing[hb_type].max_out_time);
1122 cfg->suspend_time[SCAN_HB_LMAC_IDX] =
1123 cpu_to_le32(scan_timing[hb_type].suspend_time);
1124 } else {
1125 enum iwl_mvm_scan_type type =
1126 iwl_mvm_get_scan_type(mvm, NULL);
1127
1128 cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] =
1129 cpu_to_le32(scan_timing[type].max_out_time);
1130 cfg->suspend_time[SCAN_LB_LMAC_IDX] =
1131 cpu_to_le32(scan_timing[type].suspend_time);
1132 }
1133
1134 iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell);
1135
1136 memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN);
1137
1138 /* This function should not be called when using ADD_STA ver >=12 */
1139 WARN_ON_ONCE(iwl_mvm_has_new_station_api(mvm->fw));
1140
1141 cfg->bcast_sta_id = mvm->aux_sta.sta_id;
1142 cfg->channel_flags = channel_flags;
1143
1144 iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels);
1145}
1146
1147static int iwl_mvm_legacy_config_scan(struct iwl_mvm *mvm)
1148{
1149 void *cfg;
1150 int ret, cmd_size;
1151 struct iwl_host_cmd cmd = {
1152 .id = WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_CFG_CMD),
1153 };
1154 enum iwl_mvm_scan_type type;
1155 enum iwl_mvm_scan_type hb_type = IWL_SCAN_TYPE_NOT_SET;
1156 int num_channels =
1157 mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels +
1158 mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels;
1159 u32 flags;
1160 u8 channel_flags;
1161
1162 if (WARN_ON(num_channels > mvm->fw->ucode_capa.n_scan_channels))
1163 num_channels = mvm->fw->ucode_capa.n_scan_channels;
1164
1165 if (iwl_mvm_is_cdb_supported(mvm)) {
1166 type = iwl_mvm_get_scan_type_band(mvm, NULL,
1167 NL80211_BAND_2GHZ);
1168 hb_type = iwl_mvm_get_scan_type_band(mvm, NULL,
1169 NL80211_BAND_5GHZ);
1170 if (type == mvm->scan_type && hb_type == mvm->hb_scan_type)
1171 return 0;
1172 } else {
1173 type = iwl_mvm_get_scan_type(mvm, NULL);
1174 if (type == mvm->scan_type)
1175 return 0;
1176 }
1177
1178 if (iwl_mvm_cdb_scan_api(mvm))
1179 cmd_size = sizeof(struct iwl_scan_config_v2);
1180 else
1181 cmd_size = sizeof(struct iwl_scan_config_v1);
1182 cmd_size += mvm->fw->ucode_capa.n_scan_channels;
1183
1184 cfg = kzalloc(cmd_size, GFP_KERNEL);
1185 if (!cfg)
1186 return -ENOMEM;
1187
1188 flags = SCAN_CONFIG_FLAG_ACTIVATE |
1189 SCAN_CONFIG_FLAG_ALLOW_CHUB_REQS |
1190 SCAN_CONFIG_FLAG_SET_TX_CHAINS |
1191 SCAN_CONFIG_FLAG_SET_RX_CHAINS |
1192 SCAN_CONFIG_FLAG_SET_AUX_STA_ID |
1193 SCAN_CONFIG_FLAG_SET_ALL_TIMES |
1194 SCAN_CONFIG_FLAG_SET_LEGACY_RATES |
1195 SCAN_CONFIG_FLAG_SET_MAC_ADDR |
1196 SCAN_CONFIG_FLAG_SET_CHANNEL_FLAGS |
1197 SCAN_CONFIG_N_CHANNELS(num_channels) |
1198 (iwl_mvm_is_scan_fragmented(type) ?
1199 SCAN_CONFIG_FLAG_SET_FRAGMENTED :
1200 SCAN_CONFIG_FLAG_CLEAR_FRAGMENTED);
1201
1202 channel_flags = IWL_CHANNEL_FLAG_EBS |
1203 IWL_CHANNEL_FLAG_ACCURATE_EBS |
1204 IWL_CHANNEL_FLAG_EBS_ADD |
1205 IWL_CHANNEL_FLAG_PRE_SCAN_PASSIVE2ACTIVE;
1206
1207 /*
1208 * Check for fragmented scan on LMAC2 - high band.
1209 * LMAC1 - low band is checked above.
1210 */
1211 if (iwl_mvm_cdb_scan_api(mvm)) {
1212 if (iwl_mvm_is_cdb_supported(mvm))
1213 flags |= (iwl_mvm_is_scan_fragmented(hb_type)) ?
1214 SCAN_CONFIG_FLAG_SET_LMAC2_FRAGMENTED :
1215 SCAN_CONFIG_FLAG_CLEAR_LMAC2_FRAGMENTED;
1216 iwl_mvm_fill_scan_config_v2(mvm, cfg, flags, channel_flags,
1217 num_channels);
1218 } else {
1219 iwl_mvm_fill_scan_config_v1(mvm, cfg, flags, channel_flags,
1220 num_channels);
1221 }
1222
1223 cmd.data[0] = cfg;
1224 cmd.len[0] = cmd_size;
1225 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
1226
1227 IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n");
1228
1229 ret = iwl_mvm_send_cmd(mvm, &cmd);
1230 if (!ret) {
1231 mvm->scan_type = type;
1232 mvm->hb_scan_type = hb_type;
1233 }
1234
1235 kfree(cfg);
1236 return ret;
1237}
1238
1239int iwl_mvm_config_scan(struct iwl_mvm *mvm)
1240{
1241 struct iwl_scan_config cfg;
1242 struct iwl_host_cmd cmd = {
1243 .id = WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_CFG_CMD),
1244 .len[0] = sizeof(cfg),
1245 .data[0] = &cfg,
1246 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1247 };
1248
1249 if (!iwl_mvm_is_reduced_config_scan_supported(mvm))
1250 return iwl_mvm_legacy_config_scan(mvm);
1251
1252 memset(&cfg, 0, sizeof(cfg));
1253
1254 if (!iwl_mvm_has_new_station_api(mvm->fw)) {
1255 cfg.bcast_sta_id = mvm->aux_sta.sta_id;
1256 } else if (iwl_fw_lookup_cmd_ver(mvm->fw, SCAN_CFG_CMD, 0) < 5) {
1257 /*
1258 * Fw doesn't use this sta anymore. Deprecated on SCAN_CFG_CMD
1259 * version 5.
1260 */
1261 cfg.bcast_sta_id = 0xff;
1262 }
1263
1264 cfg.tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm));
1265 cfg.rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm));
1266
1267 IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n");
1268
1269 return iwl_mvm_send_cmd(mvm, &cmd);
1270}
1271
1272static int iwl_mvm_scan_uid_by_status(struct iwl_mvm *mvm, int status)
1273{
1274 int i;
1275
1276 for (i = 0; i < mvm->max_scans; i++)
1277 if (mvm->scan_uid_status[i] == status)
1278 return i;
1279
1280 return -ENOENT;
1281}
1282
1283static void iwl_mvm_scan_umac_dwell(struct iwl_mvm *mvm,
1284 struct iwl_scan_req_umac *cmd,
1285 struct iwl_mvm_scan_params *params)
1286{
1287 struct iwl_mvm_scan_timing_params *timing, *hb_timing;
1288 u8 active_dwell, passive_dwell;
1289
1290 timing = &scan_timing[params->type];
1291 active_dwell = IWL_SCAN_DWELL_ACTIVE;
1292 passive_dwell = IWL_SCAN_DWELL_PASSIVE;
1293
1294 if (iwl_mvm_is_adaptive_dwell_supported(mvm)) {
1295 cmd->v7.adwell_default_n_aps_social =
1296 IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL;
1297 cmd->v7.adwell_default_n_aps =
1298 IWL_SCAN_ADWELL_DEFAULT_LB_N_APS;
1299
1300 if (iwl_mvm_is_adwell_hb_ap_num_supported(mvm))
1301 cmd->v9.adwell_default_hb_n_aps =
1302 IWL_SCAN_ADWELL_DEFAULT_HB_N_APS;
1303
1304 /* if custom max budget was configured with debugfs */
1305 if (IWL_MVM_ADWELL_MAX_BUDGET)
1306 cmd->v7.adwell_max_budget =
1307 cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET);
1308 else if (params->ssids && params->ssids[0].ssid_len)
1309 cmd->v7.adwell_max_budget =
1310 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN);
1311 else
1312 cmd->v7.adwell_max_budget =
1313 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN);
1314
1315 cmd->v7.scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1316 cmd->v7.max_out_time[SCAN_LB_LMAC_IDX] =
1317 cpu_to_le32(timing->max_out_time);
1318 cmd->v7.suspend_time[SCAN_LB_LMAC_IDX] =
1319 cpu_to_le32(timing->suspend_time);
1320
1321 if (iwl_mvm_is_cdb_supported(mvm)) {
1322 hb_timing = &scan_timing[params->hb_type];
1323
1324 cmd->v7.max_out_time[SCAN_HB_LMAC_IDX] =
1325 cpu_to_le32(hb_timing->max_out_time);
1326 cmd->v7.suspend_time[SCAN_HB_LMAC_IDX] =
1327 cpu_to_le32(hb_timing->suspend_time);
1328 }
1329
1330 if (!iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) {
1331 cmd->v7.active_dwell = active_dwell;
1332 cmd->v7.passive_dwell = passive_dwell;
1333 cmd->v7.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED;
1334 } else {
1335 cmd->v8.active_dwell[SCAN_LB_LMAC_IDX] = active_dwell;
1336 cmd->v8.passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell;
1337 if (iwl_mvm_is_cdb_supported(mvm)) {
1338 cmd->v8.active_dwell[SCAN_HB_LMAC_IDX] =
1339 active_dwell;
1340 cmd->v8.passive_dwell[SCAN_HB_LMAC_IDX] =
1341 passive_dwell;
1342 }
1343 }
1344 } else {
1345 cmd->v1.extended_dwell = IWL_SCAN_DWELL_EXTENDED;
1346 cmd->v1.active_dwell = active_dwell;
1347 cmd->v1.passive_dwell = passive_dwell;
1348 cmd->v1.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED;
1349
1350 if (iwl_mvm_is_cdb_supported(mvm)) {
1351 hb_timing = &scan_timing[params->hb_type];
1352
1353 cmd->v6.max_out_time[SCAN_HB_LMAC_IDX] =
1354 cpu_to_le32(hb_timing->max_out_time);
1355 cmd->v6.suspend_time[SCAN_HB_LMAC_IDX] =
1356 cpu_to_le32(hb_timing->suspend_time);
1357 }
1358
1359 if (iwl_mvm_cdb_scan_api(mvm)) {
1360 cmd->v6.scan_priority =
1361 cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1362 cmd->v6.max_out_time[SCAN_LB_LMAC_IDX] =
1363 cpu_to_le32(timing->max_out_time);
1364 cmd->v6.suspend_time[SCAN_LB_LMAC_IDX] =
1365 cpu_to_le32(timing->suspend_time);
1366 } else {
1367 cmd->v1.scan_priority =
1368 cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1369 cmd->v1.max_out_time =
1370 cpu_to_le32(timing->max_out_time);
1371 cmd->v1.suspend_time =
1372 cpu_to_le32(timing->suspend_time);
1373 }
1374 }
1375
1376 if (iwl_mvm_is_regular_scan(params))
1377 cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1378 else
1379 cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_2);
1380}
1381
1382static u32 iwl_mvm_scan_umac_ooc_priority(struct iwl_mvm_scan_params *params)
1383{
1384 return iwl_mvm_is_regular_scan(params) ?
1385 IWL_SCAN_PRIORITY_EXT_6 :
1386 IWL_SCAN_PRIORITY_EXT_2;
1387}
1388
1389static void
1390iwl_mvm_scan_umac_dwell_v11(struct iwl_mvm *mvm,
1391 struct iwl_scan_general_params_v11 *general_params,
1392 struct iwl_mvm_scan_params *params)
1393{
1394 struct iwl_mvm_scan_timing_params *timing, *hb_timing;
1395 u8 active_dwell, passive_dwell;
1396
1397 timing = &scan_timing[params->type];
1398 active_dwell = IWL_SCAN_DWELL_ACTIVE;
1399 passive_dwell = IWL_SCAN_DWELL_PASSIVE;
1400
1401 general_params->adwell_default_social_chn =
1402 IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL;
1403 general_params->adwell_default_2g = IWL_SCAN_ADWELL_DEFAULT_LB_N_APS;
1404 general_params->adwell_default_5g = IWL_SCAN_ADWELL_DEFAULT_HB_N_APS;
1405
1406 /* if custom max budget was configured with debugfs */
1407 if (IWL_MVM_ADWELL_MAX_BUDGET)
1408 general_params->adwell_max_budget =
1409 cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET);
1410 else if (params->ssids && params->ssids[0].ssid_len)
1411 general_params->adwell_max_budget =
1412 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN);
1413 else
1414 general_params->adwell_max_budget =
1415 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN);
1416
1417 general_params->scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1418 general_params->max_out_of_time[SCAN_LB_LMAC_IDX] =
1419 cpu_to_le32(timing->max_out_time);
1420 general_params->suspend_time[SCAN_LB_LMAC_IDX] =
1421 cpu_to_le32(timing->suspend_time);
1422
1423 hb_timing = &scan_timing[params->hb_type];
1424
1425 general_params->max_out_of_time[SCAN_HB_LMAC_IDX] =
1426 cpu_to_le32(hb_timing->max_out_time);
1427 general_params->suspend_time[SCAN_HB_LMAC_IDX] =
1428 cpu_to_le32(hb_timing->suspend_time);
1429
1430 general_params->active_dwell[SCAN_LB_LMAC_IDX] = active_dwell;
1431 general_params->passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell;
1432 general_params->active_dwell[SCAN_HB_LMAC_IDX] = active_dwell;
1433 general_params->passive_dwell[SCAN_HB_LMAC_IDX] = passive_dwell;
1434}
1435
1436struct iwl_mvm_scan_channel_segment {
1437 u8 start_idx;
1438 u8 end_idx;
1439 u8 first_channel_id;
1440 u8 last_channel_id;
1441 u8 channel_spacing_shift;
1442 u8 band;
1443};
1444
1445static const struct iwl_mvm_scan_channel_segment scan_channel_segments[] = {
1446 {
1447 .start_idx = 0,
1448 .end_idx = 13,
1449 .first_channel_id = 1,
1450 .last_channel_id = 14,
1451 .channel_spacing_shift = 0,
1452 .band = PHY_BAND_24
1453 },
1454 {
1455 .start_idx = 14,
1456 .end_idx = 41,
1457 .first_channel_id = 36,
1458 .last_channel_id = 144,
1459 .channel_spacing_shift = 2,
1460 .band = PHY_BAND_5
1461 },
1462 {
1463 .start_idx = 42,
1464 .end_idx = 50,
1465 .first_channel_id = 149,
1466 .last_channel_id = 181,
1467 .channel_spacing_shift = 2,
1468 .band = PHY_BAND_5
1469 },
1470 {
1471 .start_idx = 51,
1472 .end_idx = 111,
1473 .first_channel_id = 1,
1474 .last_channel_id = 241,
1475 .channel_spacing_shift = 2,
1476 .band = PHY_BAND_6
1477 },
1478};
1479
1480static int iwl_mvm_scan_ch_and_band_to_idx(u8 channel_id, u8 band)
1481{
1482 int i, index;
1483
1484 if (!channel_id)
1485 return -EINVAL;
1486
1487 for (i = 0; i < ARRAY_SIZE(scan_channel_segments); i++) {
1488 const struct iwl_mvm_scan_channel_segment *ch_segment =
1489 &scan_channel_segments[i];
1490 u32 ch_offset;
1491
1492 if (ch_segment->band != band ||
1493 ch_segment->first_channel_id > channel_id ||
1494 ch_segment->last_channel_id < channel_id)
1495 continue;
1496
1497 ch_offset = (channel_id - ch_segment->first_channel_id) >>
1498 ch_segment->channel_spacing_shift;
1499
1500 index = scan_channel_segments[i].start_idx + ch_offset;
1501 if (index < IWL_SCAN_NUM_CHANNELS)
1502 return index;
1503
1504 break;
1505 }
1506
1507 return -EINVAL;
1508}
1509
1510static const u8 p2p_go_friendly_chs[] = {
1511 36, 40, 44, 48, 149, 153, 157, 161, 165,
1512};
1513
1514static const u8 social_chs[] = {
1515 1, 6, 11
1516};
1517
1518static void iwl_mvm_scan_ch_add_n_aps_override(enum nl80211_iftype vif_type,
1519 u8 ch_id, u8 band, u8 *ch_bitmap,
1520 size_t bitmap_n_entries)
1521{
1522 int i;
1523
1524 if (vif_type != NL80211_IFTYPE_P2P_DEVICE)
1525 return;
1526
1527 for (i = 0; i < ARRAY_SIZE(p2p_go_friendly_chs); i++) {
1528 if (p2p_go_friendly_chs[i] == ch_id) {
1529 int ch_idx, bitmap_idx;
1530
1531 ch_idx = iwl_mvm_scan_ch_and_band_to_idx(ch_id, band);
1532 if (ch_idx < 0)
1533 return;
1534
1535 bitmap_idx = ch_idx / 8;
1536 if (bitmap_idx >= bitmap_n_entries)
1537 return;
1538
1539 ch_idx = ch_idx % 8;
1540 ch_bitmap[bitmap_idx] |= BIT(ch_idx);
1541
1542 return;
1543 }
1544 }
1545}
1546
1547static u32 iwl_mvm_scan_ch_n_aps_flag(enum nl80211_iftype vif_type, u8 ch_id)
1548{
1549 int i;
1550 u32 flags = 0;
1551
1552 if (vif_type != NL80211_IFTYPE_P2P_DEVICE)
1553 goto out;
1554
1555 for (i = 0; i < ARRAY_SIZE(p2p_go_friendly_chs); i++) {
1556 if (p2p_go_friendly_chs[i] == ch_id) {
1557 flags |= IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY_BIT;
1558 break;
1559 }
1560 }
1561
1562 if (flags)
1563 goto out;
1564
1565 for (i = 0; i < ARRAY_SIZE(social_chs); i++) {
1566 if (social_chs[i] == ch_id) {
1567 flags |= IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS_BIT;
1568 break;
1569 }
1570 }
1571
1572out:
1573 return flags;
1574}
1575
1576static void
1577iwl_mvm_umac_scan_cfg_channels(struct iwl_mvm *mvm,
1578 struct ieee80211_channel **channels,
1579 int n_channels, u32 flags,
1580 struct iwl_scan_channel_cfg_umac *channel_cfg)
1581{
1582 int i;
1583
1584 for (i = 0; i < n_channels; i++) {
1585 channel_cfg[i].flags = cpu_to_le32(flags);
1586 channel_cfg[i].v1.channel_num = channels[i]->hw_value;
1587 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) {
1588 enum nl80211_band band = channels[i]->band;
1589
1590 channel_cfg[i].v2.band =
1591 iwl_mvm_phy_band_from_nl80211(band);
1592 channel_cfg[i].v2.iter_count = 1;
1593 channel_cfg[i].v2.iter_interval = 0;
1594 } else {
1595 channel_cfg[i].v1.iter_count = 1;
1596 channel_cfg[i].v1.iter_interval = 0;
1597 }
1598 }
1599}
1600
1601static void
1602iwl_mvm_umac_scan_cfg_channels_v4(struct iwl_mvm *mvm,
1603 struct ieee80211_channel **channels,
1604 struct iwl_scan_channel_params_v4 *cp,
1605 int n_channels, u32 flags,
1606 enum nl80211_iftype vif_type)
1607{
1608 u8 *bitmap = cp->adwell_ch_override_bitmap;
1609 size_t bitmap_n_entries = ARRAY_SIZE(cp->adwell_ch_override_bitmap);
1610 int i;
1611
1612 for (i = 0; i < n_channels; i++) {
1613 enum nl80211_band band = channels[i]->band;
1614 struct iwl_scan_channel_cfg_umac *cfg =
1615 &cp->channel_config[i];
1616
1617 cfg->flags = cpu_to_le32(flags);
1618 cfg->v2.channel_num = channels[i]->hw_value;
1619 cfg->v2.band = iwl_mvm_phy_band_from_nl80211(band);
1620 cfg->v2.iter_count = 1;
1621 cfg->v2.iter_interval = 0;
1622
1623 iwl_mvm_scan_ch_add_n_aps_override(vif_type,
1624 cfg->v2.channel_num,
1625 cfg->v2.band, bitmap,
1626 bitmap_n_entries);
1627 }
1628}
1629
1630static void
1631iwl_mvm_umac_scan_cfg_channels_v7(struct iwl_mvm *mvm,
1632 struct ieee80211_channel **channels,
1633 struct iwl_scan_channel_params_v7 *cp,
1634 int n_channels, u32 flags,
1635 enum nl80211_iftype vif_type, u32 version)
1636{
1637 int i;
1638
1639 for (i = 0; i < n_channels; i++) {
1640 enum nl80211_band band = channels[i]->band;
1641 struct iwl_scan_channel_cfg_umac *cfg = &cp->channel_config[i];
1642 u32 n_aps_flag =
1643 iwl_mvm_scan_ch_n_aps_flag(vif_type,
1644 channels[i]->hw_value);
1645 u8 iwl_band = iwl_mvm_phy_band_from_nl80211(band);
1646
1647 cfg->flags = cpu_to_le32(flags | n_aps_flag);
1648 cfg->v2.channel_num = channels[i]->hw_value;
1649 if (cfg80211_channel_is_psc(channels[i]))
1650 cfg->flags = 0;
1651 cfg->v2.iter_count = 1;
1652 cfg->v2.iter_interval = 0;
1653 if (version < 17)
1654 cfg->v2.band = iwl_band;
1655 else
1656 cfg->flags |= cpu_to_le32((iwl_band <<
1657 IWL_CHAN_CFG_FLAGS_BAND_POS));
1658 }
1659}
1660
1661static void
1662iwl_mvm_umac_scan_fill_6g_chan_list(struct iwl_mvm *mvm,
1663 struct iwl_mvm_scan_params *params,
1664 struct iwl_scan_probe_params_v4 *pp)
1665{
1666 int j, idex_s = 0, idex_b = 0;
1667 struct cfg80211_scan_6ghz_params *scan_6ghz_params =
1668 params->scan_6ghz_params;
1669 bool hidden_supported = fw_has_capa(&mvm->fw->ucode_capa,
1670 IWL_UCODE_TLV_CAPA_HIDDEN_6GHZ_SCAN);
1671
1672 for (j = 0; j < params->n_ssids && idex_s < SCAN_SHORT_SSID_MAX_SIZE;
1673 j++) {
1674 if (!params->ssids[j].ssid_len)
1675 continue;
1676
1677 pp->short_ssid[idex_s] =
1678 cpu_to_le32(~crc32_le(~0, params->ssids[j].ssid,
1679 params->ssids[j].ssid_len));
1680
1681 if (hidden_supported) {
1682 pp->direct_scan[idex_s].id = WLAN_EID_SSID;
1683 pp->direct_scan[idex_s].len = params->ssids[j].ssid_len;
1684 memcpy(pp->direct_scan[idex_s].ssid, params->ssids[j].ssid,
1685 params->ssids[j].ssid_len);
1686 }
1687 idex_s++;
1688 }
1689
1690 /*
1691 * Populate the arrays of the short SSIDs and the BSSIDs using the 6GHz
1692 * collocated parameters. This might not be optimal, as this processing
1693 * does not (yet) correspond to the actual channels, so it is possible
1694 * that some entries would be left out.
1695 *
1696 * TODO: improve this logic.
1697 */
1698 for (j = 0; j < params->n_6ghz_params; j++) {
1699 int k;
1700
1701 /* First, try to place the short SSID */
1702 if (scan_6ghz_params[j].short_ssid_valid) {
1703 for (k = 0; k < idex_s; k++) {
1704 if (pp->short_ssid[k] ==
1705 cpu_to_le32(scan_6ghz_params[j].short_ssid))
1706 break;
1707 }
1708
1709 if (k == idex_s && idex_s < SCAN_SHORT_SSID_MAX_SIZE) {
1710 pp->short_ssid[idex_s++] =
1711 cpu_to_le32(scan_6ghz_params[j].short_ssid);
1712 }
1713 }
1714
1715 /* try to place BSSID for the same entry */
1716 for (k = 0; k < idex_b; k++) {
1717 if (!memcmp(&pp->bssid_array[k],
1718 scan_6ghz_params[j].bssid, ETH_ALEN))
1719 break;
1720 }
1721
1722 if (k == idex_b && idex_b < SCAN_BSSID_MAX_SIZE) {
1723 memcpy(&pp->bssid_array[idex_b++],
1724 scan_6ghz_params[j].bssid, ETH_ALEN);
1725 }
1726 }
1727
1728 pp->short_ssid_num = idex_s;
1729 pp->bssid_num = idex_b;
1730}
1731
1732/* TODO: this function can be merged with iwl_mvm_scan_umac_fill_ch_p_v7 */
1733static u32
1734iwl_mvm_umac_scan_cfg_channels_v7_6g(struct iwl_mvm *mvm,
1735 struct iwl_mvm_scan_params *params,
1736 u32 n_channels,
1737 struct iwl_scan_probe_params_v4 *pp,
1738 struct iwl_scan_channel_params_v7 *cp,
1739 enum nl80211_iftype vif_type,
1740 u32 version)
1741{
1742 int i;
1743 struct cfg80211_scan_6ghz_params *scan_6ghz_params =
1744 params->scan_6ghz_params;
1745 u32 ch_cnt;
1746
1747 for (i = 0, ch_cnt = 0; i < params->n_channels; i++) {
1748 struct iwl_scan_channel_cfg_umac *cfg =
1749 &cp->channel_config[ch_cnt];
1750
1751 u32 s_ssid_bitmap = 0, bssid_bitmap = 0, flags = 0;
1752 u8 j, k, s_max = 0, b_max = 0, n_used_bssid_entries;
1753 bool force_passive, found = false, allow_passive = true,
1754 unsolicited_probe_on_chan = false, psc_no_listen = false;
1755 s8 psd_20 = IEEE80211_RNR_TBTT_PARAMS_PSD_RESERVED;
1756
1757 /*
1758 * Avoid performing passive scan on non PSC channels unless the
1759 * scan is specifically a passive scan, i.e., no SSIDs
1760 * configured in the scan command.
1761 */
1762 if (!cfg80211_channel_is_psc(params->channels[i]) &&
1763 !params->n_6ghz_params && params->n_ssids)
1764 continue;
1765
1766 cfg->v1.channel_num = params->channels[i]->hw_value;
1767 if (version < 17)
1768 cfg->v2.band = PHY_BAND_6;
1769 else
1770 cfg->flags |= cpu_to_le32(PHY_BAND_6 <<
1771 IWL_CHAN_CFG_FLAGS_BAND_POS);
1772
1773 cfg->v5.iter_count = 1;
1774 cfg->v5.iter_interval = 0;
1775
1776 /*
1777 * The optimize the scan time, i.e., reduce the scan dwell time
1778 * on each channel, the below logic tries to set 3 direct BSSID
1779 * probe requests for each broadcast probe request with a short
1780 * SSID.
1781 * TODO: improve this logic
1782 */
1783 n_used_bssid_entries = 3;
1784 for (j = 0; j < params->n_6ghz_params; j++) {
1785 s8 tmp_psd_20;
1786
1787 if (!(scan_6ghz_params[j].channel_idx == i))
1788 continue;
1789
1790 /* Use the highest PSD value allowed as advertised by
1791 * APs for this channel
1792 */
1793 tmp_psd_20 = scan_6ghz_params[j].psd_20;
1794 if (tmp_psd_20 !=
1795 IEEE80211_RNR_TBTT_PARAMS_PSD_RESERVED &&
1796 (psd_20 ==
1797 IEEE80211_RNR_TBTT_PARAMS_PSD_RESERVED ||
1798 psd_20 < tmp_psd_20))
1799 psd_20 = tmp_psd_20;
1800
1801 found = false;
1802 unsolicited_probe_on_chan |=
1803 scan_6ghz_params[j].unsolicited_probe;
1804 psc_no_listen |= scan_6ghz_params[j].psc_no_listen;
1805
1806 for (k = 0; k < pp->short_ssid_num; k++) {
1807 if (!scan_6ghz_params[j].unsolicited_probe &&
1808 le32_to_cpu(pp->short_ssid[k]) ==
1809 scan_6ghz_params[j].short_ssid) {
1810 /* Relevant short SSID bit set */
1811 if (s_ssid_bitmap & BIT(k)) {
1812 found = true;
1813 break;
1814 }
1815
1816 /*
1817 * Use short SSID only to create a new
1818 * iteration during channel dwell or in
1819 * case that the short SSID has a
1820 * matching SSID, i.e., scan for hidden
1821 * APs.
1822 */
1823 if (n_used_bssid_entries >= 3) {
1824 s_ssid_bitmap |= BIT(k);
1825 s_max++;
1826 n_used_bssid_entries -= 3;
1827 found = true;
1828 break;
1829 } else if (pp->direct_scan[k].len) {
1830 s_ssid_bitmap |= BIT(k);
1831 s_max++;
1832 found = true;
1833 allow_passive = false;
1834 break;
1835 }
1836 }
1837 }
1838
1839 if (found)
1840 continue;
1841
1842 for (k = 0; k < pp->bssid_num; k++) {
1843 if (!memcmp(&pp->bssid_array[k],
1844 scan_6ghz_params[j].bssid,
1845 ETH_ALEN)) {
1846 if (!(bssid_bitmap & BIT(k))) {
1847 bssid_bitmap |= BIT(k);
1848 b_max++;
1849 n_used_bssid_entries++;
1850 }
1851 break;
1852 }
1853 }
1854 }
1855
1856 if (cfg80211_channel_is_psc(params->channels[i]) &&
1857 psc_no_listen)
1858 flags |= IWL_UHB_CHAN_CFG_FLAG_PSC_CHAN_NO_LISTEN;
1859
1860 if (unsolicited_probe_on_chan)
1861 flags |= IWL_UHB_CHAN_CFG_FLAG_UNSOLICITED_PROBE_RES;
1862
1863 /*
1864 * In the following cases apply passive scan:
1865 * 1. Non fragmented scan:
1866 * - PSC channel with NO_LISTEN_FLAG on should be treated
1867 * like non PSC channel
1868 * - Non PSC channel with more than 3 short SSIDs or more
1869 * than 9 BSSIDs.
1870 * - Non PSC Channel with unsolicited probe response and
1871 * more than 2 short SSIDs or more than 6 BSSIDs.
1872 * - PSC channel with more than 2 short SSIDs or more than
1873 * 6 BSSIDs.
1874 * 3. Fragmented scan:
1875 * - PSC channel with more than 1 SSID or 3 BSSIDs.
1876 * - Non PSC channel with more than 2 SSIDs or 6 BSSIDs.
1877 * - Non PSC channel with unsolicited probe response and
1878 * more than 1 SSID or more than 3 BSSIDs.
1879 */
1880 if (!iwl_mvm_is_scan_fragmented(params->type)) {
1881 if (!cfg80211_channel_is_psc(params->channels[i]) ||
1882 flags & IWL_UHB_CHAN_CFG_FLAG_PSC_CHAN_NO_LISTEN) {
1883 force_passive = (s_max > 3 || b_max > 9);
1884 force_passive |= (unsolicited_probe_on_chan &&
1885 (s_max > 2 || b_max > 6));
1886 } else {
1887 force_passive = (s_max > 2 || b_max > 6);
1888 }
1889 } else if (cfg80211_channel_is_psc(params->channels[i])) {
1890 force_passive = (s_max > 1 || b_max > 3);
1891 } else {
1892 force_passive = (s_max > 2 || b_max > 6);
1893 force_passive |= (unsolicited_probe_on_chan &&
1894 (s_max > 1 || b_max > 3));
1895 }
1896 if ((allow_passive && force_passive) ||
1897 (!(bssid_bitmap | s_ssid_bitmap) &&
1898 !cfg80211_channel_is_psc(params->channels[i])))
1899 flags |= IWL_UHB_CHAN_CFG_FLAG_FORCE_PASSIVE;
1900 else
1901 flags |= bssid_bitmap | (s_ssid_bitmap << 16);
1902
1903 cfg->flags |= cpu_to_le32(flags);
1904 if (version >= 17)
1905 cfg->v5.psd_20 = psd_20;
1906
1907 ch_cnt++;
1908 }
1909
1910 if (params->n_channels > ch_cnt)
1911 IWL_DEBUG_SCAN(mvm,
1912 "6GHz: reducing number channels: (%u->%u)\n",
1913 params->n_channels, ch_cnt);
1914
1915 return ch_cnt;
1916}
1917
1918static u8 iwl_mvm_scan_umac_chan_flags_v2(struct iwl_mvm *mvm,
1919 struct iwl_mvm_scan_params *params,
1920 struct ieee80211_vif *vif)
1921{
1922 u8 flags = 0;
1923
1924 flags |= IWL_SCAN_CHANNEL_FLAG_ENABLE_CHAN_ORDER;
1925
1926 if (iwl_mvm_scan_use_ebs(mvm, vif))
1927 flags |= IWL_SCAN_CHANNEL_FLAG_EBS |
1928 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
1929 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD;
1930
1931 /* set fragmented ebs for fragmented scan on HB channels */
1932 if ((!iwl_mvm_is_cdb_supported(mvm) &&
1933 iwl_mvm_is_scan_fragmented(params->type)) ||
1934 (iwl_mvm_is_cdb_supported(mvm) &&
1935 iwl_mvm_is_scan_fragmented(params->hb_type)))
1936 flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG;
1937
1938 /*
1939 * force EBS in case the scan is a fragmented and there is a need to take P2P
1940 * GO operation into consideration during scan operation.
1941 */
1942 if ((!iwl_mvm_is_cdb_supported(mvm) &&
1943 iwl_mvm_is_scan_fragmented(params->type) && params->respect_p2p_go) ||
1944 (iwl_mvm_is_cdb_supported(mvm) &&
1945 iwl_mvm_is_scan_fragmented(params->hb_type) &&
1946 params->respect_p2p_go_hb)) {
1947 IWL_DEBUG_SCAN(mvm, "Respect P2P GO. Force EBS\n");
1948 flags |= IWL_SCAN_CHANNEL_FLAG_FORCE_EBS;
1949 }
1950
1951 return flags;
1952}
1953
1954static void iwl_mvm_scan_6ghz_passive_scan(struct iwl_mvm *mvm,
1955 struct iwl_mvm_scan_params *params,
1956 struct ieee80211_vif *vif)
1957{
1958 struct ieee80211_supported_band *sband =
1959 &mvm->nvm_data->bands[NL80211_BAND_6GHZ];
1960 u32 n_disabled, i;
1961
1962 params->enable_6ghz_passive = false;
1963
1964 if (params->scan_6ghz)
1965 return;
1966
1967 if (!fw_has_capa(&mvm->fw->ucode_capa,
1968 IWL_UCODE_TLV_CAPA_PASSIVE_6GHZ_SCAN)) {
1969 IWL_DEBUG_SCAN(mvm,
1970 "6GHz passive scan: Not supported by FW\n");
1971 return;
1972 }
1973
1974 /* 6GHz passive scan allowed only on station interface */
1975 if (vif->type != NL80211_IFTYPE_STATION) {
1976 IWL_DEBUG_SCAN(mvm,
1977 "6GHz passive scan: not station interface\n");
1978 return;
1979 }
1980
1981 /*
1982 * 6GHz passive scan is allowed in a defined time interval following HW
1983 * reset or resume flow, or while not associated and a large interval
1984 * has passed since the last 6GHz passive scan.
1985 */
1986 if ((vif->cfg.assoc ||
1987 time_after(mvm->last_6ghz_passive_scan_jiffies +
1988 (IWL_MVM_6GHZ_PASSIVE_SCAN_TIMEOUT * HZ), jiffies)) &&
1989 (time_before(mvm->last_reset_or_resume_time_jiffies +
1990 (IWL_MVM_6GHZ_PASSIVE_SCAN_ASSOC_TIMEOUT * HZ),
1991 jiffies))) {
1992 IWL_DEBUG_SCAN(mvm, "6GHz passive scan: %s\n",
1993 vif->cfg.assoc ? "associated" :
1994 "timeout did not expire");
1995 return;
1996 }
1997
1998 /* not enough channels in the regular scan request */
1999 if (params->n_channels < IWL_MVM_6GHZ_PASSIVE_SCAN_MIN_CHANS) {
2000 IWL_DEBUG_SCAN(mvm,
2001 "6GHz passive scan: not enough channels\n");
2002 return;
2003 }
2004
2005 for (i = 0; i < params->n_ssids; i++) {
2006 if (!params->ssids[i].ssid_len)
2007 break;
2008 }
2009
2010 /* not a wildcard scan, so cannot enable passive 6GHz scan */
2011 if (i == params->n_ssids) {
2012 IWL_DEBUG_SCAN(mvm,
2013 "6GHz passive scan: no wildcard SSID\n");
2014 return;
2015 }
2016
2017 if (!sband || !sband->n_channels) {
2018 IWL_DEBUG_SCAN(mvm,
2019 "6GHz passive scan: no 6GHz channels\n");
2020 return;
2021 }
2022
2023 for (i = 0, n_disabled = 0; i < sband->n_channels; i++) {
2024 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED))
2025 n_disabled++;
2026 }
2027
2028 /*
2029 * Not all the 6GHz channels are disabled, so no need for 6GHz passive
2030 * scan
2031 */
2032 if (n_disabled != sband->n_channels) {
2033 IWL_DEBUG_SCAN(mvm,
2034 "6GHz passive scan: 6GHz channels enabled\n");
2035 return;
2036 }
2037
2038 /* all conditions to enable 6ghz passive scan are satisfied */
2039 IWL_DEBUG_SCAN(mvm, "6GHz passive scan: can be enabled\n");
2040 params->enable_6ghz_passive = true;
2041}
2042
2043static u16 iwl_mvm_scan_umac_flags_v2(struct iwl_mvm *mvm,
2044 struct iwl_mvm_scan_params *params,
2045 struct ieee80211_vif *vif,
2046 int type)
2047{
2048 u16 flags = 0;
2049
2050 /*
2051 * If no direct SSIDs are provided perform a passive scan. Otherwise,
2052 * if there is a single SSID which is not the broadcast SSID, assume
2053 * that the scan is intended for roaming purposes and thus enable Rx on
2054 * all chains to improve chances of hearing the beacons/probe responses.
2055 */
2056 if (params->n_ssids == 0)
2057 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FORCE_PASSIVE;
2058 else if (params->n_ssids == 1 && params->ssids[0].ssid_len)
2059 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_USE_ALL_RX_CHAINS;
2060
2061 if (iwl_mvm_is_scan_fragmented(params->type))
2062 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1;
2063
2064 if (iwl_mvm_is_scan_fragmented(params->hb_type))
2065 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC2;
2066
2067 if (params->pass_all)
2068 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PASS_ALL;
2069 else
2070 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_MATCH;
2071
2072 if (!iwl_mvm_is_regular_scan(params))
2073 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PERIODIC;
2074
2075 if (params->iter_notif ||
2076 mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED)
2077 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_NTFY_ITER_COMPLETE;
2078
2079 if (IWL_MVM_ADWELL_ENABLE)
2080 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_ADAPTIVE_DWELL;
2081
2082 if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT)
2083 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PREEMPTIVE;
2084
2085 if ((type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) &&
2086 params->flags & NL80211_SCAN_FLAG_COLOCATED_6GHZ)
2087 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_TRIGGER_UHB_SCAN;
2088
2089 if (params->enable_6ghz_passive)
2090 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_6GHZ_PASSIVE_SCAN;
2091
2092 if (iwl_mvm_is_oce_supported(mvm) &&
2093 (params->flags & (NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP |
2094 NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE |
2095 NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME)))
2096 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_OCE;
2097
2098 return flags;
2099}
2100
2101static u8 iwl_mvm_scan_umac_flags2(struct iwl_mvm *mvm,
2102 struct iwl_mvm_scan_params *params,
2103 struct ieee80211_vif *vif, int type)
2104{
2105 u8 flags = 0;
2106
2107 if (iwl_mvm_is_cdb_supported(mvm)) {
2108 if (params->respect_p2p_go)
2109 flags |= IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_LB;
2110 if (params->respect_p2p_go_hb)
2111 flags |= IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_HB;
2112 } else {
2113 if (params->respect_p2p_go)
2114 flags = IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_LB |
2115 IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_HB;
2116 }
2117
2118 if (params->scan_6ghz &&
2119 fw_has_capa(&mvm->fw->ucode_capa,
2120 IWL_UCODE_TLV_CAPA_SCAN_DONT_TOGGLE_ANT))
2121 flags |= IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_DONT_TOGGLE_ANT;
2122
2123 return flags;
2124}
2125
2126static u16 iwl_mvm_scan_umac_flags(struct iwl_mvm *mvm,
2127 struct iwl_mvm_scan_params *params,
2128 struct ieee80211_vif *vif)
2129{
2130 u16 flags = 0;
2131
2132 if (params->n_ssids == 0)
2133 flags = IWL_UMAC_SCAN_GEN_FLAGS_PASSIVE;
2134
2135 if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0)
2136 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PRE_CONNECT;
2137
2138 if (iwl_mvm_is_scan_fragmented(params->type))
2139 flags |= IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED;
2140
2141 if (iwl_mvm_is_cdb_supported(mvm) &&
2142 iwl_mvm_is_scan_fragmented(params->hb_type))
2143 flags |= IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED;
2144
2145 if (iwl_mvm_rrm_scan_needed(mvm) &&
2146 fw_has_capa(&mvm->fw->ucode_capa,
2147 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
2148 flags |= IWL_UMAC_SCAN_GEN_FLAGS_RRM_ENABLED;
2149
2150 if (params->pass_all)
2151 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PASS_ALL;
2152 else
2153 flags |= IWL_UMAC_SCAN_GEN_FLAGS_MATCH;
2154
2155 if (!iwl_mvm_is_regular_scan(params))
2156 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PERIODIC;
2157
2158 if (params->iter_notif)
2159 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE;
2160
2161#ifdef CONFIG_IWLWIFI_DEBUGFS
2162 if (mvm->scan_iter_notif_enabled)
2163 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE;
2164#endif
2165
2166 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED)
2167 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE;
2168
2169 if (iwl_mvm_is_adaptive_dwell_supported(mvm) && IWL_MVM_ADWELL_ENABLE)
2170 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ADAPTIVE_DWELL;
2171
2172 /*
2173 * Extended dwell is relevant only for low band to start with, as it is
2174 * being used for social channles only (1, 6, 11), so we can check
2175 * only scan type on low band also for CDB.
2176 */
2177 if (iwl_mvm_is_regular_scan(params) &&
2178 vif->type != NL80211_IFTYPE_P2P_DEVICE &&
2179 !iwl_mvm_is_scan_fragmented(params->type) &&
2180 !iwl_mvm_is_adaptive_dwell_supported(mvm) &&
2181 !iwl_mvm_is_oce_supported(mvm))
2182 flags |= IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL;
2183
2184 if (iwl_mvm_is_oce_supported(mvm)) {
2185 if ((params->flags &
2186 NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE))
2187 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_HIGH_TX_RATE;
2188 /* Since IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL and
2189 * NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION shares
2190 * the same bit, we need to make sure that we use this bit here
2191 * only when IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL cannot be
2192 * used. */
2193 if ((params->flags &
2194 NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) &&
2195 !WARN_ON_ONCE(!iwl_mvm_is_adaptive_dwell_supported(mvm)))
2196 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_DEFER_SUPP;
2197 if ((params->flags & NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME))
2198 flags |= IWL_UMAC_SCAN_GEN_FLAGS_MAX_CHNL_TIME;
2199 }
2200
2201 return flags;
2202}
2203
2204static int
2205iwl_mvm_fill_scan_sched_params(struct iwl_mvm_scan_params *params,
2206 struct iwl_scan_umac_schedule *schedule,
2207 __le16 *delay)
2208{
2209 int i;
2210 if (WARN_ON(!params->n_scan_plans ||
2211 params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS))
2212 return -EINVAL;
2213
2214 for (i = 0; i < params->n_scan_plans; i++) {
2215 struct cfg80211_sched_scan_plan *scan_plan =
2216 ¶ms->scan_plans[i];
2217
2218 schedule[i].iter_count = scan_plan->iterations;
2219 schedule[i].interval =
2220 cpu_to_le16(scan_plan->interval);
2221 }
2222
2223 /*
2224 * If the number of iterations of the last scan plan is set to
2225 * zero, it should run infinitely. However, this is not always the case.
2226 * For example, when regular scan is requested the driver sets one scan
2227 * plan with one iteration.
2228 */
2229 if (!schedule[params->n_scan_plans - 1].iter_count)
2230 schedule[params->n_scan_plans - 1].iter_count = 0xff;
2231
2232 *delay = cpu_to_le16(params->delay);
2233
2234 return 0;
2235}
2236
2237static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2238 struct iwl_mvm_scan_params *params,
2239 int type, int uid)
2240{
2241 struct iwl_scan_req_umac *cmd = mvm->scan_cmd;
2242 struct iwl_scan_umac_chan_param *chan_param;
2243 void *cmd_data = iwl_mvm_get_scan_req_umac_data(mvm);
2244 void *sec_part = (u8 *)cmd_data + sizeof(struct iwl_scan_channel_cfg_umac) *
2245 mvm->fw->ucode_capa.n_scan_channels;
2246 struct iwl_scan_req_umac_tail_v2 *tail_v2 =
2247 (struct iwl_scan_req_umac_tail_v2 *)sec_part;
2248 struct iwl_scan_req_umac_tail_v1 *tail_v1;
2249 struct iwl_ssid_ie *direct_scan;
2250 int ret = 0;
2251 u32 ssid_bitmap = 0;
2252 u8 channel_flags = 0;
2253 u16 gen_flags;
2254 struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif);
2255
2256 chan_param = iwl_mvm_get_scan_req_umac_channel(mvm);
2257
2258 iwl_mvm_scan_umac_dwell(mvm, cmd, params);
2259
2260 mvm->scan_uid_status[uid] = type;
2261
2262 cmd->uid = cpu_to_le32(uid);
2263 gen_flags = iwl_mvm_scan_umac_flags(mvm, params, vif);
2264 cmd->general_flags = cpu_to_le16(gen_flags);
2265 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) {
2266 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED)
2267 cmd->v8.num_of_fragments[SCAN_LB_LMAC_IDX] =
2268 IWL_SCAN_NUM_OF_FRAGS;
2269 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED)
2270 cmd->v8.num_of_fragments[SCAN_HB_LMAC_IDX] =
2271 IWL_SCAN_NUM_OF_FRAGS;
2272
2273 cmd->v8.general_flags2 =
2274 IWL_UMAC_SCAN_GEN_FLAGS2_ALLOW_CHNL_REORDER;
2275 }
2276
2277 cmd->scan_start_mac_id = scan_vif->id;
2278
2279 if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT)
2280 cmd->flags = cpu_to_le32(IWL_UMAC_SCAN_FLAG_PREEMPTIVE);
2281
2282 if (iwl_mvm_scan_use_ebs(mvm, vif)) {
2283 channel_flags = IWL_SCAN_CHANNEL_FLAG_EBS |
2284 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
2285 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD;
2286
2287 /* set fragmented ebs for fragmented scan on HB channels */
2288 if (iwl_mvm_is_frag_ebs_supported(mvm)) {
2289 if (gen_flags &
2290 IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED ||
2291 (!iwl_mvm_is_cdb_supported(mvm) &&
2292 gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED))
2293 channel_flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG;
2294 }
2295 }
2296
2297 chan_param->flags = channel_flags;
2298 chan_param->count = params->n_channels;
2299
2300 ret = iwl_mvm_fill_scan_sched_params(params, tail_v2->schedule,
2301 &tail_v2->delay);
2302 if (ret) {
2303 mvm->scan_uid_status[uid] = 0;
2304 return ret;
2305 }
2306
2307 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) {
2308 tail_v2->preq = params->preq;
2309 direct_scan = tail_v2->direct_scan;
2310 } else {
2311 tail_v1 = (struct iwl_scan_req_umac_tail_v1 *)sec_part;
2312 iwl_mvm_scan_set_legacy_probe_req(&tail_v1->preq,
2313 ¶ms->preq);
2314 direct_scan = tail_v1->direct_scan;
2315 }
2316 iwl_scan_build_ssids(params, direct_scan, &ssid_bitmap);
2317 iwl_mvm_umac_scan_cfg_channels(mvm, params->channels,
2318 params->n_channels, ssid_bitmap,
2319 cmd_data);
2320 return 0;
2321}
2322
2323static void
2324iwl_mvm_scan_umac_fill_general_p_v12(struct iwl_mvm *mvm,
2325 struct iwl_mvm_scan_params *params,
2326 struct ieee80211_vif *vif,
2327 struct iwl_scan_general_params_v11 *gp,
2328 u16 gen_flags, u8 gen_flags2,
2329 u32 version)
2330{
2331 struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif);
2332
2333 iwl_mvm_scan_umac_dwell_v11(mvm, gp, params);
2334
2335 IWL_DEBUG_SCAN(mvm, "General: flags=0x%x, flags2=0x%x\n",
2336 gen_flags, gen_flags2);
2337
2338 gp->flags = cpu_to_le16(gen_flags);
2339 gp->flags2 = gen_flags2;
2340
2341 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1)
2342 gp->num_of_fragments[SCAN_LB_LMAC_IDX] = IWL_SCAN_NUM_OF_FRAGS;
2343 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC2)
2344 gp->num_of_fragments[SCAN_HB_LMAC_IDX] = IWL_SCAN_NUM_OF_FRAGS;
2345
2346 mvm->scan_link_id = 0;
2347
2348 if (version < 16) {
2349 gp->scan_start_mac_or_link_id = scan_vif->id;
2350 } else {
2351 struct iwl_mvm_vif_link_info *link_info =
2352 scan_vif->link[params->tsf_report_link_id];
2353
2354 mvm->scan_link_id = params->tsf_report_link_id;
2355 if (!WARN_ON(!link_info))
2356 gp->scan_start_mac_or_link_id = link_info->fw_link_id;
2357 }
2358}
2359
2360static void
2361iwl_mvm_scan_umac_fill_probe_p_v3(struct iwl_mvm_scan_params *params,
2362 struct iwl_scan_probe_params_v3 *pp)
2363{
2364 pp->preq = params->preq;
2365 pp->ssid_num = params->n_ssids;
2366 iwl_scan_build_ssids(params, pp->direct_scan, NULL);
2367}
2368
2369static void
2370iwl_mvm_scan_umac_fill_probe_p_v4(struct iwl_mvm_scan_params *params,
2371 struct iwl_scan_probe_params_v4 *pp,
2372 u32 *bitmap_ssid)
2373{
2374 pp->preq = params->preq;
2375 iwl_scan_build_ssids(params, pp->direct_scan, bitmap_ssid);
2376}
2377
2378static void
2379iwl_mvm_scan_umac_fill_ch_p_v4(struct iwl_mvm *mvm,
2380 struct iwl_mvm_scan_params *params,
2381 struct ieee80211_vif *vif,
2382 struct iwl_scan_channel_params_v4 *cp,
2383 u32 channel_cfg_flags)
2384{
2385 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif);
2386 cp->count = params->n_channels;
2387 cp->num_of_aps_override = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY;
2388
2389 iwl_mvm_umac_scan_cfg_channels_v4(mvm, params->channels, cp,
2390 params->n_channels,
2391 channel_cfg_flags,
2392 vif->type);
2393}
2394
2395static void
2396iwl_mvm_scan_umac_fill_ch_p_v7(struct iwl_mvm *mvm,
2397 struct iwl_mvm_scan_params *params,
2398 struct ieee80211_vif *vif,
2399 struct iwl_scan_channel_params_v7 *cp,
2400 u32 channel_cfg_flags,
2401 u32 version)
2402{
2403 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif);
2404 cp->count = params->n_channels;
2405 cp->n_aps_override[0] = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY;
2406 cp->n_aps_override[1] = IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS;
2407
2408 iwl_mvm_umac_scan_cfg_channels_v7(mvm, params->channels, cp,
2409 params->n_channels,
2410 channel_cfg_flags,
2411 vif->type, version);
2412
2413 if (params->enable_6ghz_passive) {
2414 struct ieee80211_supported_band *sband =
2415 &mvm->nvm_data->bands[NL80211_BAND_6GHZ];
2416 u32 i;
2417
2418 for (i = 0; i < sband->n_channels; i++) {
2419 struct ieee80211_channel *channel =
2420 &sband->channels[i];
2421
2422 struct iwl_scan_channel_cfg_umac *cfg =
2423 &cp->channel_config[cp->count];
2424
2425 if (!cfg80211_channel_is_psc(channel))
2426 continue;
2427
2428 cfg->v5.channel_num = channel->hw_value;
2429 cfg->v5.iter_count = 1;
2430 cfg->v5.iter_interval = 0;
2431
2432 if (version < 17) {
2433 cfg->flags = 0;
2434 cfg->v2.band = PHY_BAND_6;
2435 } else {
2436 cfg->flags = cpu_to_le32(PHY_BAND_6 <<
2437 IWL_CHAN_CFG_FLAGS_BAND_POS);
2438 cfg->v5.psd_20 =
2439 IEEE80211_RNR_TBTT_PARAMS_PSD_RESERVED;
2440 }
2441 cp->count++;
2442 }
2443 }
2444}
2445
2446static int iwl_mvm_scan_umac_v12(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2447 struct iwl_mvm_scan_params *params, int type,
2448 int uid)
2449{
2450 struct iwl_scan_req_umac_v12 *cmd = mvm->scan_cmd;
2451 struct iwl_scan_req_params_v12 *scan_p = &cmd->scan_params;
2452 int ret;
2453 u16 gen_flags;
2454
2455 mvm->scan_uid_status[uid] = type;
2456
2457 cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(params));
2458 cmd->uid = cpu_to_le32(uid);
2459
2460 gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type);
2461 iwl_mvm_scan_umac_fill_general_p_v12(mvm, params, vif,
2462 &scan_p->general_params,
2463 gen_flags, 0, 12);
2464
2465 ret = iwl_mvm_fill_scan_sched_params(params,
2466 scan_p->periodic_params.schedule,
2467 &scan_p->periodic_params.delay);
2468 if (ret)
2469 return ret;
2470
2471 iwl_mvm_scan_umac_fill_probe_p_v3(params, &scan_p->probe_params);
2472 iwl_mvm_scan_umac_fill_ch_p_v4(mvm, params, vif,
2473 &scan_p->channel_params, 0);
2474
2475 return 0;
2476}
2477
2478static int iwl_mvm_scan_umac_v14_and_above(struct iwl_mvm *mvm,
2479 struct ieee80211_vif *vif,
2480 struct iwl_mvm_scan_params *params,
2481 int type, int uid, u32 version)
2482{
2483 struct iwl_scan_req_umac_v17 *cmd = mvm->scan_cmd;
2484 struct iwl_scan_req_params_v17 *scan_p = &cmd->scan_params;
2485 struct iwl_scan_channel_params_v7 *cp = &scan_p->channel_params;
2486 struct iwl_scan_probe_params_v4 *pb = &scan_p->probe_params;
2487 int ret;
2488 u16 gen_flags;
2489 u8 gen_flags2;
2490 u32 bitmap_ssid = 0;
2491
2492 mvm->scan_uid_status[uid] = type;
2493
2494 cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(params));
2495 cmd->uid = cpu_to_le32(uid);
2496
2497 gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type);
2498
2499 if (version >= 15)
2500 gen_flags2 = iwl_mvm_scan_umac_flags2(mvm, params, vif, type);
2501 else
2502 gen_flags2 = 0;
2503
2504 iwl_mvm_scan_umac_fill_general_p_v12(mvm, params, vif,
2505 &scan_p->general_params,
2506 gen_flags, gen_flags2, version);
2507
2508 ret = iwl_mvm_fill_scan_sched_params(params,
2509 scan_p->periodic_params.schedule,
2510 &scan_p->periodic_params.delay);
2511 if (ret)
2512 return ret;
2513
2514 if (!params->scan_6ghz) {
2515 iwl_mvm_scan_umac_fill_probe_p_v4(params,
2516 &scan_p->probe_params,
2517 &bitmap_ssid);
2518 iwl_mvm_scan_umac_fill_ch_p_v7(mvm, params, vif,
2519 &scan_p->channel_params,
2520 bitmap_ssid,
2521 version);
2522 return 0;
2523 } else {
2524 pb->preq = params->preq;
2525 }
2526
2527 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif);
2528 cp->n_aps_override[0] = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY;
2529 cp->n_aps_override[1] = IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS;
2530
2531 iwl_mvm_umac_scan_fill_6g_chan_list(mvm, params, pb);
2532
2533 cp->count = iwl_mvm_umac_scan_cfg_channels_v7_6g(mvm, params,
2534 params->n_channels,
2535 pb, cp, vif->type,
2536 version);
2537 if (!cp->count) {
2538 mvm->scan_uid_status[uid] = 0;
2539 return -EINVAL;
2540 }
2541
2542 if (!params->n_ssids ||
2543 (params->n_ssids == 1 && !params->ssids[0].ssid_len))
2544 cp->flags |= IWL_SCAN_CHANNEL_FLAG_6G_PSC_NO_FILTER;
2545
2546 return 0;
2547}
2548
2549static int iwl_mvm_scan_umac_v14(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2550 struct iwl_mvm_scan_params *params, int type,
2551 int uid)
2552{
2553 return iwl_mvm_scan_umac_v14_and_above(mvm, vif, params, type, uid, 14);
2554}
2555
2556static int iwl_mvm_scan_umac_v15(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2557 struct iwl_mvm_scan_params *params, int type,
2558 int uid)
2559{
2560 return iwl_mvm_scan_umac_v14_and_above(mvm, vif, params, type, uid, 15);
2561}
2562
2563static int iwl_mvm_scan_umac_v16(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2564 struct iwl_mvm_scan_params *params, int type,
2565 int uid)
2566{
2567 return iwl_mvm_scan_umac_v14_and_above(mvm, vif, params, type, uid, 16);
2568}
2569
2570static int iwl_mvm_scan_umac_v17(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2571 struct iwl_mvm_scan_params *params, int type,
2572 int uid)
2573{
2574 return iwl_mvm_scan_umac_v14_and_above(mvm, vif, params, type, uid, 17);
2575}
2576
2577static int iwl_mvm_num_scans(struct iwl_mvm *mvm)
2578{
2579 return hweight32(mvm->scan_status & IWL_MVM_SCAN_MASK);
2580}
2581
2582static int iwl_mvm_check_running_scans(struct iwl_mvm *mvm, int type)
2583{
2584 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
2585 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
2586
2587 /* This looks a bit arbitrary, but the idea is that if we run
2588 * out of possible simultaneous scans and the userspace is
2589 * trying to run a scan type that is already running, we
2590 * return -EBUSY. But if the userspace wants to start a
2591 * different type of scan, we stop the opposite type to make
2592 * space for the new request. The reason is backwards
2593 * compatibility with old wpa_supplicant that wouldn't stop a
2594 * scheduled scan before starting a normal scan.
2595 */
2596
2597 /* FW supports only a single periodic scan */
2598 if ((type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) &&
2599 mvm->scan_status & (IWL_MVM_SCAN_SCHED | IWL_MVM_SCAN_NETDETECT))
2600 return -EBUSY;
2601
2602 if (iwl_mvm_num_scans(mvm) < mvm->max_scans)
2603 return 0;
2604
2605 /* Use a switch, even though this is a bitmask, so that more
2606 * than one bits set will fall in default and we will warn.
2607 */
2608 switch (type) {
2609 case IWL_MVM_SCAN_REGULAR:
2610 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK)
2611 return -EBUSY;
2612 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2613 case IWL_MVM_SCAN_SCHED:
2614 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK)
2615 return -EBUSY;
2616 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2617 case IWL_MVM_SCAN_NETDETECT:
2618 /* For non-unified images, there's no need to stop
2619 * anything for net-detect since the firmware is
2620 * restarted anyway. This way, any sched scans that
2621 * were running will be restarted when we resume.
2622 */
2623 if (!unified_image)
2624 return 0;
2625
2626 /* If this is a unified image and we ran out of scans,
2627 * we need to stop something. Prefer stopping regular
2628 * scans, because the results are useless at this
2629 * point, and we should be able to keep running
2630 * another scheduled scan while suspended.
2631 */
2632 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK)
2633 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR,
2634 true);
2635 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK)
2636 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED,
2637 true);
2638 /* Something is wrong if no scan was running but we
2639 * ran out of scans.
2640 */
2641 fallthrough;
2642 default:
2643 WARN_ON(1);
2644 break;
2645 }
2646
2647 return -EIO;
2648}
2649
2650#define SCAN_TIMEOUT 30000
2651
2652void iwl_mvm_scan_timeout_wk(struct work_struct *work)
2653{
2654 struct delayed_work *delayed_work = to_delayed_work(work);
2655 struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm,
2656 scan_timeout_dwork);
2657
2658 IWL_ERR(mvm, "regular scan timed out\n");
2659
2660 iwl_force_nmi(mvm->trans);
2661}
2662
2663static void iwl_mvm_fill_scan_type(struct iwl_mvm *mvm,
2664 struct iwl_mvm_scan_params *params,
2665 struct ieee80211_vif *vif)
2666{
2667 if (iwl_mvm_is_cdb_supported(mvm)) {
2668 params->type =
2669 iwl_mvm_get_scan_type_band(mvm, vif,
2670 NL80211_BAND_2GHZ);
2671 params->hb_type =
2672 iwl_mvm_get_scan_type_band(mvm, vif,
2673 NL80211_BAND_5GHZ);
2674 } else {
2675 params->type = iwl_mvm_get_scan_type(mvm, vif);
2676 }
2677}
2678
2679struct iwl_scan_umac_handler {
2680 u8 version;
2681 int (*handler)(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2682 struct iwl_mvm_scan_params *params, int type, int uid);
2683};
2684
2685#define IWL_SCAN_UMAC_HANDLER(_ver) { \
2686 .version = _ver, \
2687 .handler = iwl_mvm_scan_umac_v##_ver, \
2688}
2689
2690static const struct iwl_scan_umac_handler iwl_scan_umac_handlers[] = {
2691 /* set the newest version first to shorten the list traverse time */
2692 IWL_SCAN_UMAC_HANDLER(17),
2693 IWL_SCAN_UMAC_HANDLER(16),
2694 IWL_SCAN_UMAC_HANDLER(15),
2695 IWL_SCAN_UMAC_HANDLER(14),
2696 IWL_SCAN_UMAC_HANDLER(12),
2697};
2698
2699static void iwl_mvm_mei_scan_work(struct work_struct *wk)
2700{
2701 struct iwl_mei_scan_filter *scan_filter =
2702 container_of(wk, struct iwl_mei_scan_filter, scan_work);
2703 struct iwl_mvm *mvm =
2704 container_of(scan_filter, struct iwl_mvm, mei_scan_filter);
2705 struct iwl_mvm_csme_conn_info *info;
2706 struct sk_buff *skb;
2707 u8 bssid[ETH_ALEN];
2708
2709 mutex_lock(&mvm->mutex);
2710 info = iwl_mvm_get_csme_conn_info(mvm);
2711 memcpy(bssid, info->conn_info.bssid, ETH_ALEN);
2712 mutex_unlock(&mvm->mutex);
2713
2714 while ((skb = skb_dequeue(&scan_filter->scan_res))) {
2715 struct ieee80211_mgmt *mgmt = (void *)skb->data;
2716
2717 if (!memcmp(mgmt->bssid, bssid, ETH_ALEN))
2718 ieee80211_rx_irqsafe(mvm->hw, skb);
2719 else
2720 kfree_skb(skb);
2721 }
2722}
2723
2724void iwl_mvm_mei_scan_filter_init(struct iwl_mei_scan_filter *mei_scan_filter)
2725{
2726 skb_queue_head_init(&mei_scan_filter->scan_res);
2727 INIT_WORK(&mei_scan_filter->scan_work, iwl_mvm_mei_scan_work);
2728}
2729
2730/* In case CSME is connected and has link protection set, this function will
2731 * override the scan request to scan only the associated channel and only for
2732 * the associated SSID.
2733 */
2734static void iwl_mvm_mei_limited_scan(struct iwl_mvm *mvm,
2735 struct iwl_mvm_scan_params *params)
2736{
2737 struct iwl_mvm_csme_conn_info *info = iwl_mvm_get_csme_conn_info(mvm);
2738 struct iwl_mei_conn_info *conn_info;
2739 struct ieee80211_channel *chan;
2740 int scan_iters, i;
2741
2742 if (!info) {
2743 IWL_DEBUG_SCAN(mvm, "mei_limited_scan: no connection info\n");
2744 return;
2745 }
2746
2747 conn_info = &info->conn_info;
2748 if (!info->conn_info.lp_state || !info->conn_info.ssid_len)
2749 return;
2750
2751 if (!params->n_channels || !params->n_ssids)
2752 return;
2753
2754 mvm->mei_scan_filter.is_mei_limited_scan = true;
2755
2756 chan = ieee80211_get_channel(mvm->hw->wiphy,
2757 ieee80211_channel_to_frequency(conn_info->channel,
2758 conn_info->band));
2759 if (!chan) {
2760 IWL_DEBUG_SCAN(mvm,
2761 "Failed to get CSME channel (chan=%u band=%u)\n",
2762 conn_info->channel, conn_info->band);
2763 return;
2764 }
2765
2766 /* The mei filtered scan must find the AP, otherwise CSME will
2767 * take the NIC ownership. Add several iterations on the channel to
2768 * make the scan more robust.
2769 */
2770 scan_iters = min(IWL_MEI_SCAN_NUM_ITER, params->n_channels);
2771 params->n_channels = scan_iters;
2772 for (i = 0; i < scan_iters; i++)
2773 params->channels[i] = chan;
2774
2775 IWL_DEBUG_SCAN(mvm, "Mei scan: num iterations=%u\n", scan_iters);
2776
2777 params->n_ssids = 1;
2778 params->ssids[0].ssid_len = conn_info->ssid_len;
2779 memcpy(params->ssids[0].ssid, conn_info->ssid, conn_info->ssid_len);
2780}
2781
2782static int iwl_mvm_build_scan_cmd(struct iwl_mvm *mvm,
2783 struct ieee80211_vif *vif,
2784 struct iwl_host_cmd *hcmd,
2785 struct iwl_mvm_scan_params *params,
2786 int type)
2787{
2788 int uid, i, err;
2789 u8 scan_ver;
2790
2791 lockdep_assert_held(&mvm->mutex);
2792 memset(mvm->scan_cmd, 0, mvm->scan_cmd_size);
2793
2794 iwl_mvm_mei_limited_scan(mvm, params);
2795
2796 if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2797 hcmd->id = SCAN_OFFLOAD_REQUEST_CMD;
2798
2799 return iwl_mvm_scan_lmac(mvm, vif, params);
2800 }
2801
2802 uid = iwl_mvm_scan_uid_by_status(mvm, 0);
2803 if (uid < 0)
2804 return uid;
2805
2806 hcmd->id = WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_REQ_UMAC);
2807
2808 scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, SCAN_REQ_UMAC,
2809 IWL_FW_CMD_VER_UNKNOWN);
2810
2811 for (i = 0; i < ARRAY_SIZE(iwl_scan_umac_handlers); i++) {
2812 const struct iwl_scan_umac_handler *ver_handler =
2813 &iwl_scan_umac_handlers[i];
2814
2815 if (ver_handler->version != scan_ver)
2816 continue;
2817
2818 return ver_handler->handler(mvm, vif, params, type, uid);
2819 }
2820
2821 err = iwl_mvm_scan_umac(mvm, vif, params, type, uid);
2822 if (err)
2823 return err;
2824
2825 return uid;
2826}
2827
2828struct iwl_mvm_scan_respect_p2p_go_iter_data {
2829 struct ieee80211_vif *current_vif;
2830 bool p2p_go;
2831 enum nl80211_band band;
2832};
2833
2834static void iwl_mvm_scan_respect_p2p_go_iter(void *_data, u8 *mac,
2835 struct ieee80211_vif *vif)
2836{
2837 struct iwl_mvm_scan_respect_p2p_go_iter_data *data = _data;
2838 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2839
2840 /* exclude the given vif */
2841 if (vif == data->current_vif)
2842 return;
2843
2844 if (vif->type == NL80211_IFTYPE_AP && vif->p2p) {
2845 u32 link_id;
2846
2847 for (link_id = 0;
2848 link_id < ARRAY_SIZE(mvmvif->link);
2849 link_id++) {
2850 struct iwl_mvm_vif_link_info *link =
2851 mvmvif->link[link_id];
2852
2853 if (link && link->phy_ctxt->id < NUM_PHY_CTX &&
2854 (data->band == NUM_NL80211_BANDS ||
2855 link->phy_ctxt->channel->band == data->band)) {
2856 data->p2p_go = true;
2857 break;
2858 }
2859 }
2860 }
2861}
2862
2863static bool _iwl_mvm_get_respect_p2p_go(struct iwl_mvm *mvm,
2864 struct ieee80211_vif *vif,
2865 bool low_latency,
2866 enum nl80211_band band)
2867{
2868 struct iwl_mvm_scan_respect_p2p_go_iter_data data = {
2869 .current_vif = vif,
2870 .p2p_go = false,
2871 .band = band,
2872 };
2873
2874 if (!low_latency)
2875 return false;
2876
2877 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
2878 IEEE80211_IFACE_ITER_NORMAL,
2879 iwl_mvm_scan_respect_p2p_go_iter,
2880 &data);
2881
2882 return data.p2p_go;
2883}
2884
2885static bool iwl_mvm_get_respect_p2p_go_band(struct iwl_mvm *mvm,
2886 struct ieee80211_vif *vif,
2887 enum nl80211_band band)
2888{
2889 bool low_latency = iwl_mvm_low_latency_band(mvm, band);
2890
2891 return _iwl_mvm_get_respect_p2p_go(mvm, vif, low_latency, band);
2892}
2893
2894static bool iwl_mvm_get_respect_p2p_go(struct iwl_mvm *mvm,
2895 struct ieee80211_vif *vif)
2896{
2897 bool low_latency = iwl_mvm_low_latency(mvm);
2898
2899 return _iwl_mvm_get_respect_p2p_go(mvm, vif, low_latency,
2900 NUM_NL80211_BANDS);
2901}
2902
2903static void iwl_mvm_fill_respect_p2p_go(struct iwl_mvm *mvm,
2904 struct iwl_mvm_scan_params *params,
2905 struct ieee80211_vif *vif)
2906{
2907 if (iwl_mvm_is_cdb_supported(mvm)) {
2908 params->respect_p2p_go =
2909 iwl_mvm_get_respect_p2p_go_band(mvm, vif,
2910 NL80211_BAND_2GHZ);
2911 params->respect_p2p_go_hb =
2912 iwl_mvm_get_respect_p2p_go_band(mvm, vif,
2913 NL80211_BAND_5GHZ);
2914 } else {
2915 params->respect_p2p_go = iwl_mvm_get_respect_p2p_go(mvm, vif);
2916 }
2917}
2918
2919int iwl_mvm_reg_scan_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2920 struct cfg80211_scan_request *req,
2921 struct ieee80211_scan_ies *ies)
2922{
2923 struct iwl_host_cmd hcmd = {
2924 .len = { iwl_mvm_scan_size(mvm), },
2925 .data = { mvm->scan_cmd, },
2926 .dataflags = { IWL_HCMD_DFL_NOCOPY, },
2927 };
2928 struct iwl_mvm_scan_params params = {};
2929 int ret, uid;
2930 struct cfg80211_sched_scan_plan scan_plan = { .iterations = 1 };
2931
2932 lockdep_assert_held(&mvm->mutex);
2933
2934 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) {
2935 IWL_ERR(mvm, "scan while LAR regdomain is not set\n");
2936 return -EBUSY;
2937 }
2938
2939 ret = iwl_mvm_check_running_scans(mvm, IWL_MVM_SCAN_REGULAR);
2940 if (ret)
2941 return ret;
2942
2943 /* we should have failed registration if scan_cmd was NULL */
2944 if (WARN_ON(!mvm->scan_cmd))
2945 return -ENOMEM;
2946
2947 if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels))
2948 return -ENOBUFS;
2949
2950 params.n_ssids = req->n_ssids;
2951 params.flags = req->flags;
2952 params.n_channels = req->n_channels;
2953 params.delay = 0;
2954 params.ssids = req->ssids;
2955 params.channels = req->channels;
2956 params.mac_addr = req->mac_addr;
2957 params.mac_addr_mask = req->mac_addr_mask;
2958 params.no_cck = req->no_cck;
2959 params.pass_all = true;
2960 params.n_match_sets = 0;
2961 params.match_sets = NULL;
2962 ether_addr_copy(params.bssid, req->bssid);
2963
2964 params.scan_plans = &scan_plan;
2965 params.n_scan_plans = 1;
2966
2967 params.n_6ghz_params = req->n_6ghz_params;
2968 params.scan_6ghz_params = req->scan_6ghz_params;
2969 params.scan_6ghz = req->scan_6ghz;
2970 iwl_mvm_fill_scan_type(mvm, ¶ms, vif);
2971 iwl_mvm_fill_respect_p2p_go(mvm, ¶ms, vif);
2972
2973 if (req->duration)
2974 params.iter_notif = true;
2975
2976 params.tsf_report_link_id = req->tsf_report_link_id;
2977 if (params.tsf_report_link_id < 0) {
2978 if (vif->active_links)
2979 params.tsf_report_link_id = __ffs(vif->active_links);
2980 else
2981 params.tsf_report_link_id = 0;
2982 }
2983
2984 iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms);
2985
2986 iwl_mvm_scan_6ghz_passive_scan(mvm, ¶ms, vif);
2987
2988 uid = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, ¶ms,
2989 IWL_MVM_SCAN_REGULAR);
2990
2991 if (uid < 0)
2992 return uid;
2993
2994 iwl_mvm_pause_tcm(mvm, false);
2995
2996 ret = iwl_mvm_send_cmd(mvm, &hcmd);
2997 if (ret) {
2998 /* If the scan failed, it usually means that the FW was unable
2999 * to allocate the time events. Warn on it, but maybe we
3000 * should try to send the command again with different params.
3001 */
3002 IWL_ERR(mvm, "Scan failed! ret %d\n", ret);
3003 iwl_mvm_resume_tcm(mvm);
3004 mvm->scan_uid_status[uid] = 0;
3005 return ret;
3006 }
3007
3008 IWL_DEBUG_SCAN(mvm, "Scan request was sent successfully\n");
3009 mvm->scan_status |= IWL_MVM_SCAN_REGULAR;
3010 mvm->scan_vif = iwl_mvm_vif_from_mac80211(vif);
3011
3012 if (params.enable_6ghz_passive)
3013 mvm->last_6ghz_passive_scan_jiffies = jiffies;
3014
3015 schedule_delayed_work(&mvm->scan_timeout_dwork,
3016 msecs_to_jiffies(SCAN_TIMEOUT));
3017
3018 return 0;
3019}
3020
3021int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm,
3022 struct ieee80211_vif *vif,
3023 struct cfg80211_sched_scan_request *req,
3024 struct ieee80211_scan_ies *ies,
3025 int type)
3026{
3027 struct iwl_host_cmd hcmd = {
3028 .len = { iwl_mvm_scan_size(mvm), },
3029 .data = { mvm->scan_cmd, },
3030 .dataflags = { IWL_HCMD_DFL_NOCOPY, },
3031 };
3032 struct iwl_mvm_scan_params params = {};
3033 int ret, uid;
3034 int i, j;
3035 bool non_psc_included = false;
3036
3037 lockdep_assert_held(&mvm->mutex);
3038
3039 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) {
3040 IWL_ERR(mvm, "sched-scan while LAR regdomain is not set\n");
3041 return -EBUSY;
3042 }
3043
3044 ret = iwl_mvm_check_running_scans(mvm, type);
3045 if (ret)
3046 return ret;
3047
3048 /* we should have failed registration if scan_cmd was NULL */
3049 if (WARN_ON(!mvm->scan_cmd))
3050 return -ENOMEM;
3051
3052
3053 params.n_ssids = req->n_ssids;
3054 params.flags = req->flags;
3055 params.n_channels = req->n_channels;
3056 params.ssids = req->ssids;
3057 params.channels = req->channels;
3058 params.mac_addr = req->mac_addr;
3059 params.mac_addr_mask = req->mac_addr_mask;
3060 params.no_cck = false;
3061 params.pass_all = iwl_mvm_scan_pass_all(mvm, req);
3062 params.n_match_sets = req->n_match_sets;
3063 params.match_sets = req->match_sets;
3064 eth_broadcast_addr(params.bssid);
3065 if (!req->n_scan_plans)
3066 return -EINVAL;
3067
3068 params.n_scan_plans = req->n_scan_plans;
3069 params.scan_plans = req->scan_plans;
3070
3071 iwl_mvm_fill_scan_type(mvm, ¶ms, vif);
3072 iwl_mvm_fill_respect_p2p_go(mvm, ¶ms, vif);
3073
3074 /* In theory, LMAC scans can handle a 32-bit delay, but since
3075 * waiting for over 18 hours to start the scan is a bit silly
3076 * and to keep it aligned with UMAC scans (which only support
3077 * 16-bit delays), trim it down to 16-bits.
3078 */
3079 if (req->delay > U16_MAX) {
3080 IWL_DEBUG_SCAN(mvm,
3081 "delay value is > 16-bits, set to max possible\n");
3082 params.delay = U16_MAX;
3083 } else {
3084 params.delay = req->delay;
3085 }
3086
3087 ret = iwl_mvm_config_sched_scan_profiles(mvm, req);
3088 if (ret)
3089 return ret;
3090
3091 iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms);
3092
3093 /* for 6 GHZ band only PSC channels need to be added */
3094 for (i = 0; i < params.n_channels; i++) {
3095 struct ieee80211_channel *channel = params.channels[i];
3096
3097 if (channel->band == NL80211_BAND_6GHZ &&
3098 !cfg80211_channel_is_psc(channel)) {
3099 non_psc_included = true;
3100 break;
3101 }
3102 }
3103
3104 if (non_psc_included) {
3105 params.channels = kmemdup(params.channels,
3106 sizeof(params.channels[0]) *
3107 params.n_channels,
3108 GFP_KERNEL);
3109 if (!params.channels)
3110 return -ENOMEM;
3111
3112 for (i = j = 0; i < params.n_channels; i++) {
3113 if (params.channels[i]->band == NL80211_BAND_6GHZ &&
3114 !cfg80211_channel_is_psc(params.channels[i]))
3115 continue;
3116 params.channels[j++] = params.channels[i];
3117 }
3118 params.n_channels = j;
3119 }
3120
3121 if (non_psc_included &&
3122 !iwl_mvm_scan_fits(mvm, req->n_ssids, ies, params.n_channels)) {
3123 kfree(params.channels);
3124 return -ENOBUFS;
3125 }
3126
3127 uid = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, ¶ms, type);
3128
3129 if (non_psc_included)
3130 kfree(params.channels);
3131 if (uid < 0)
3132 return uid;
3133
3134 ret = iwl_mvm_send_cmd(mvm, &hcmd);
3135 if (!ret) {
3136 IWL_DEBUG_SCAN(mvm,
3137 "Sched scan request was sent successfully\n");
3138 mvm->scan_status |= type;
3139 } else {
3140 /* If the scan failed, it usually means that the FW was unable
3141 * to allocate the time events. Warn on it, but maybe we
3142 * should try to send the command again with different params.
3143 */
3144 IWL_ERR(mvm, "Sched scan failed! ret %d\n", ret);
3145 mvm->scan_uid_status[uid] = 0;
3146 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
3147 }
3148
3149 return ret;
3150}
3151
3152void iwl_mvm_rx_umac_scan_complete_notif(struct iwl_mvm *mvm,
3153 struct iwl_rx_cmd_buffer *rxb)
3154{
3155 struct iwl_rx_packet *pkt = rxb_addr(rxb);
3156 struct iwl_umac_scan_complete *notif = (void *)pkt->data;
3157 u32 uid = __le32_to_cpu(notif->uid);
3158 bool aborted = (notif->status == IWL_SCAN_OFFLOAD_ABORTED);
3159
3160 mvm->mei_scan_filter.is_mei_limited_scan = false;
3161
3162 if (WARN_ON(!(mvm->scan_uid_status[uid] & mvm->scan_status)))
3163 return;
3164
3165 /* if the scan is already stopping, we don't need to notify mac80211 */
3166 if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_REGULAR) {
3167 struct cfg80211_scan_info info = {
3168 .aborted = aborted,
3169 .scan_start_tsf = mvm->scan_start,
3170 };
3171 struct iwl_mvm_vif *scan_vif = mvm->scan_vif;
3172 struct iwl_mvm_vif_link_info *link_info =
3173 scan_vif->link[mvm->scan_link_id];
3174
3175 if (!WARN_ON(!link_info))
3176 memcpy(info.tsf_bssid, link_info->bssid, ETH_ALEN);
3177
3178 ieee80211_scan_completed(mvm->hw, &info);
3179 mvm->scan_vif = NULL;
3180 cancel_delayed_work(&mvm->scan_timeout_dwork);
3181 iwl_mvm_resume_tcm(mvm);
3182 } else if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_SCHED) {
3183 ieee80211_sched_scan_stopped(mvm->hw);
3184 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
3185 }
3186
3187 mvm->scan_status &= ~mvm->scan_uid_status[uid];
3188 IWL_DEBUG_SCAN(mvm,
3189 "Scan completed, uid %u type %u, status %s, EBS status %s\n",
3190 uid, mvm->scan_uid_status[uid],
3191 notif->status == IWL_SCAN_OFFLOAD_COMPLETED ?
3192 "completed" : "aborted",
3193 iwl_mvm_ebs_status_str(notif->ebs_status));
3194 IWL_DEBUG_SCAN(mvm,
3195 "Last line %d, Last iteration %d, Time from last iteration %d\n",
3196 notif->last_schedule, notif->last_iter,
3197 __le32_to_cpu(notif->time_from_last_iter));
3198
3199 if (notif->ebs_status != IWL_SCAN_EBS_SUCCESS &&
3200 notif->ebs_status != IWL_SCAN_EBS_INACTIVE)
3201 mvm->last_ebs_successful = false;
3202
3203 mvm->scan_uid_status[uid] = 0;
3204}
3205
3206void iwl_mvm_rx_umac_scan_iter_complete_notif(struct iwl_mvm *mvm,
3207 struct iwl_rx_cmd_buffer *rxb)
3208{
3209 struct iwl_rx_packet *pkt = rxb_addr(rxb);
3210 struct iwl_umac_scan_iter_complete_notif *notif = (void *)pkt->data;
3211
3212 mvm->scan_start = le64_to_cpu(notif->start_tsf);
3213
3214 IWL_DEBUG_SCAN(mvm,
3215 "UMAC Scan iteration complete: status=0x%x scanned_channels=%d\n",
3216 notif->status, notif->scanned_channels);
3217
3218 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) {
3219 IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n");
3220 ieee80211_sched_scan_results(mvm->hw);
3221 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED;
3222 }
3223
3224 IWL_DEBUG_SCAN(mvm,
3225 "UMAC Scan iteration complete: scan started at %llu (TSF)\n",
3226 mvm->scan_start);
3227}
3228
3229static int iwl_mvm_umac_scan_abort(struct iwl_mvm *mvm, int type)
3230{
3231 struct iwl_umac_scan_abort cmd = {};
3232 int uid, ret;
3233
3234 lockdep_assert_held(&mvm->mutex);
3235
3236 /* We should always get a valid index here, because we already
3237 * checked that this type of scan was running in the generic
3238 * code.
3239 */
3240 uid = iwl_mvm_scan_uid_by_status(mvm, type);
3241 if (WARN_ON_ONCE(uid < 0))
3242 return uid;
3243
3244 cmd.uid = cpu_to_le32(uid);
3245
3246 IWL_DEBUG_SCAN(mvm, "Sending scan abort, uid %u\n", uid);
3247
3248 ret = iwl_mvm_send_cmd_pdu(mvm,
3249 WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_ABORT_UMAC),
3250 0, sizeof(cmd), &cmd);
3251 if (!ret)
3252 mvm->scan_uid_status[uid] = type << IWL_MVM_SCAN_STOPPING_SHIFT;
3253
3254 return ret;
3255}
3256
3257static int iwl_mvm_scan_stop_wait(struct iwl_mvm *mvm, int type)
3258{
3259 struct iwl_notification_wait wait_scan_done;
3260 static const u16 scan_done_notif[] = { SCAN_COMPLETE_UMAC,
3261 SCAN_OFFLOAD_COMPLETE, };
3262 int ret;
3263
3264 lockdep_assert_held(&mvm->mutex);
3265
3266 iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_done,
3267 scan_done_notif,
3268 ARRAY_SIZE(scan_done_notif),
3269 NULL, NULL);
3270
3271 IWL_DEBUG_SCAN(mvm, "Preparing to stop scan, type %x\n", type);
3272
3273 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
3274 ret = iwl_mvm_umac_scan_abort(mvm, type);
3275 else
3276 ret = iwl_mvm_lmac_scan_abort(mvm);
3277
3278 if (ret) {
3279 IWL_DEBUG_SCAN(mvm, "couldn't stop scan type %d\n", type);
3280 iwl_remove_notification(&mvm->notif_wait, &wait_scan_done);
3281 return ret;
3282 }
3283
3284 return iwl_wait_notification(&mvm->notif_wait, &wait_scan_done,
3285 1 * HZ);
3286}
3287
3288static size_t iwl_scan_req_umac_get_size(u8 scan_ver)
3289{
3290 switch (scan_ver) {
3291 case 12:
3292 return sizeof(struct iwl_scan_req_umac_v12);
3293 case 14:
3294 case 15:
3295 case 16:
3296 case 17:
3297 return sizeof(struct iwl_scan_req_umac_v17);
3298 }
3299
3300 return 0;
3301}
3302
3303size_t iwl_mvm_scan_size(struct iwl_mvm *mvm)
3304{
3305 int base_size, tail_size;
3306 u8 scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, SCAN_REQ_UMAC,
3307 IWL_FW_CMD_VER_UNKNOWN);
3308
3309 base_size = iwl_scan_req_umac_get_size(scan_ver);
3310 if (base_size)
3311 return base_size;
3312
3313
3314 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm))
3315 base_size = IWL_SCAN_REQ_UMAC_SIZE_V8;
3316 else if (iwl_mvm_is_adaptive_dwell_supported(mvm))
3317 base_size = IWL_SCAN_REQ_UMAC_SIZE_V7;
3318 else if (iwl_mvm_cdb_scan_api(mvm))
3319 base_size = IWL_SCAN_REQ_UMAC_SIZE_V6;
3320 else
3321 base_size = IWL_SCAN_REQ_UMAC_SIZE_V1;
3322
3323 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
3324 if (iwl_mvm_is_scan_ext_chan_supported(mvm))
3325 tail_size = sizeof(struct iwl_scan_req_umac_tail_v2);
3326 else
3327 tail_size = sizeof(struct iwl_scan_req_umac_tail_v1);
3328
3329 return base_size +
3330 sizeof(struct iwl_scan_channel_cfg_umac) *
3331 mvm->fw->ucode_capa.n_scan_channels +
3332 tail_size;
3333 }
3334 return sizeof(struct iwl_scan_req_lmac) +
3335 sizeof(struct iwl_scan_channel_cfg_lmac) *
3336 mvm->fw->ucode_capa.n_scan_channels +
3337 sizeof(struct iwl_scan_probe_req_v1);
3338}
3339
3340/*
3341 * This function is used in nic restart flow, to inform mac80211 about scans
3342 * that was aborted by restart flow or by an assert.
3343 */
3344void iwl_mvm_report_scan_aborted(struct iwl_mvm *mvm)
3345{
3346 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
3347 int uid, i;
3348
3349 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_REGULAR);
3350 if (uid >= 0) {
3351 struct cfg80211_scan_info info = {
3352 .aborted = true,
3353 };
3354
3355 cancel_delayed_work(&mvm->scan_timeout_dwork);
3356
3357 ieee80211_scan_completed(mvm->hw, &info);
3358 mvm->scan_uid_status[uid] = 0;
3359 }
3360 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_SCHED);
3361 if (uid >= 0) {
3362 /* Sched scan will be restarted by mac80211 in
3363 * restart_hw, so do not report if FW is about to be
3364 * restarted.
3365 */
3366 if (!mvm->fw_restart)
3367 ieee80211_sched_scan_stopped(mvm->hw);
3368 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
3369 mvm->scan_uid_status[uid] = 0;
3370 }
3371 uid = iwl_mvm_scan_uid_by_status(mvm,
3372 IWL_MVM_SCAN_STOPPING_REGULAR);
3373 if (uid >= 0)
3374 mvm->scan_uid_status[uid] = 0;
3375
3376 uid = iwl_mvm_scan_uid_by_status(mvm,
3377 IWL_MVM_SCAN_STOPPING_SCHED);
3378 if (uid >= 0)
3379 mvm->scan_uid_status[uid] = 0;
3380
3381 /* We shouldn't have any UIDs still set. Loop over all the
3382 * UIDs to make sure there's nothing left there and warn if
3383 * any is found.
3384 */
3385 for (i = 0; i < mvm->max_scans; i++) {
3386 if (WARN_ONCE(mvm->scan_uid_status[i],
3387 "UMAC scan UID %d status was not cleaned\n",
3388 i))
3389 mvm->scan_uid_status[i] = 0;
3390 }
3391 } else {
3392 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) {
3393 struct cfg80211_scan_info info = {
3394 .aborted = true,
3395 };
3396
3397 cancel_delayed_work(&mvm->scan_timeout_dwork);
3398 ieee80211_scan_completed(mvm->hw, &info);
3399 }
3400
3401 /* Sched scan will be restarted by mac80211 in
3402 * restart_hw, so do not report if FW is about to be
3403 * restarted.
3404 */
3405 if ((mvm->scan_status & IWL_MVM_SCAN_SCHED) &&
3406 !mvm->fw_restart) {
3407 ieee80211_sched_scan_stopped(mvm->hw);
3408 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
3409 }
3410 }
3411}
3412
3413int iwl_mvm_scan_stop(struct iwl_mvm *mvm, int type, bool notify)
3414{
3415 int ret;
3416
3417 if (!(mvm->scan_status & type))
3418 return 0;
3419
3420 if (!test_bit(STATUS_DEVICE_ENABLED, &mvm->trans->status)) {
3421 ret = 0;
3422 goto out;
3423 }
3424
3425 ret = iwl_mvm_scan_stop_wait(mvm, type);
3426 if (!ret)
3427 mvm->scan_status |= type << IWL_MVM_SCAN_STOPPING_SHIFT;
3428out:
3429 /* Clear the scan status so the next scan requests will
3430 * succeed and mark the scan as stopping, so that the Rx
3431 * handler doesn't do anything, as the scan was stopped from
3432 * above.
3433 */
3434 mvm->scan_status &= ~type;
3435
3436 if (type == IWL_MVM_SCAN_REGULAR) {
3437 cancel_delayed_work(&mvm->scan_timeout_dwork);
3438 if (notify) {
3439 struct cfg80211_scan_info info = {
3440 .aborted = true,
3441 };
3442
3443 ieee80211_scan_completed(mvm->hw, &info);
3444 }
3445 } else if (notify) {
3446 ieee80211_sched_scan_stopped(mvm->hw);
3447 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
3448 }
3449
3450 return ret;
3451}
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
103struct iwl_mvm_scan_timing_params {
104 u32 suspend_time;
105 u32 max_out_time;
106};
107
108static 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
131struct 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
153static 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
169static inline struct iwl_scan_umac_chan_param *
170iwl_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
186static 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
193static 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
206static inline __le32
207iwl_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
222static 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
233static enum iwl_mvm_traffic_load iwl_mvm_get_traffic_load(struct iwl_mvm *mvm)
234{
235 return mvm->tcm.result.global_load;
236}
237
238static enum iwl_mvm_traffic_load
239iwl_mvm_get_traffic_load_band(struct iwl_mvm *mvm, enum nl80211_band band)
240{
241 return mvm->tcm.result.band_load[band];
242}
243
244struct iwl_is_dcm_with_go_iterator_data {
245 struct ieee80211_vif *current_vif;
246 bool is_dcm_with_p2p_go;
247};
248
249static 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
267static enum
268iwl_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
313static enum
314iwl_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
326static enum
327iwl_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
340static int
341iwl_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
367static 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
374static 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
390int 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
407void 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
424void 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
431static 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
445void 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
529static 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 */
546static 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
592static int
593iwl_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);
669free_blacklist:
670 kfree(blacklist);
671
672 return ret;
673}
674
675static 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
692static 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
719static 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
738static void
739iwl_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
758static 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
796static 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
810static void
811iwl_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
874static 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
887static 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
899static 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
924static 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
930static 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
936static 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
977static void
978iwl_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
990static 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 ¶ms->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, ¶ms->preq);
1063
1064 return 0;
1065}
1066
1067static 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
1087static __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
1106static 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
1115static 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
1129static 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
1153static 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
1201static 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
1293int 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
1317static 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
1328static 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
1430static 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
1437static void
1438iwl_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
1486struct 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
1495static 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
1522static 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
1552static const u8 p2p_go_friendly_chs[] = {
1553 36, 40, 44, 48, 149, 153, 157, 161, 165,
1554};
1555
1556static const u8 social_chs[] = {
1557 1, 6, 11
1558};
1559
1560static 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
1589static 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
1614out:
1615 return flags;
1616}
1617
1618static void
1619iwl_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
1643static void
1644iwl_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
1672static void
1673iwl_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
1696static 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
1716static 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
1753static 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
1831static int
1832iwl_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 ¶ms->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
1864static 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 ¶ms->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
1948static void
1949iwl_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
1969static void
1970iwl_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
1978static void
1979iwl_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
1987static void
1988iwl_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
2004static void
2005iwl_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
2022static 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
2054static int iwl_mvm_scan_umac_v14(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_v14 *cmd = mvm->scan_cmd;
2059 struct iwl_scan_req_params_v14 *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_v6(mvm, params, vif,
2083 &scan_p->channel_params, bitmap_ssid);
2084
2085 return 0;
2086}
2087
2088static int iwl_mvm_num_scans(struct iwl_mvm *mvm)
2089{
2090 return hweight32(mvm->scan_status & IWL_MVM_SCAN_MASK);
2091}
2092
2093static int iwl_mvm_check_running_scans(struct iwl_mvm *mvm, int type)
2094{
2095 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
2096 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
2097
2098 /* This looks a bit arbitrary, but the idea is that if we run
2099 * out of possible simultaneous scans and the userspace is
2100 * trying to run a scan type that is already running, we
2101 * return -EBUSY. But if the userspace wants to start a
2102 * different type of scan, we stop the opposite type to make
2103 * space for the new request. The reason is backwards
2104 * compatibility with old wpa_supplicant that wouldn't stop a
2105 * scheduled scan before starting a normal scan.
2106 */
2107
2108 /* FW supports only a single periodic scan */
2109 if ((type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) &&
2110 mvm->scan_status & (IWL_MVM_SCAN_SCHED | IWL_MVM_SCAN_NETDETECT))
2111 return -EBUSY;
2112
2113 if (iwl_mvm_num_scans(mvm) < mvm->max_scans)
2114 return 0;
2115
2116 /* Use a switch, even though this is a bitmask, so that more
2117 * than one bits set will fall in default and we will warn.
2118 */
2119 switch (type) {
2120 case IWL_MVM_SCAN_REGULAR:
2121 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK)
2122 return -EBUSY;
2123 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2124 case IWL_MVM_SCAN_SCHED:
2125 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK)
2126 return -EBUSY;
2127 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2128 case IWL_MVM_SCAN_NETDETECT:
2129 /* For non-unified images, there's no need to stop
2130 * anything for net-detect since the firmware is
2131 * restarted anyway. This way, any sched scans that
2132 * were running will be restarted when we resume.
2133 */
2134 if (!unified_image)
2135 return 0;
2136
2137 /* If this is a unified image and we ran out of scans,
2138 * we need to stop something. Prefer stopping regular
2139 * scans, because the results are useless at this
2140 * point, and we should be able to keep running
2141 * another scheduled scan while suspended.
2142 */
2143 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK)
2144 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR,
2145 true);
2146 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK)
2147 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED,
2148 true);
2149 /* Something is wrong if no scan was running but we
2150 * ran out of scans.
2151 */
2152 /* fall through */
2153 default:
2154 WARN_ON(1);
2155 break;
2156 }
2157
2158 return -EIO;
2159}
2160
2161#define SCAN_TIMEOUT 20000
2162
2163void iwl_mvm_scan_timeout_wk(struct work_struct *work)
2164{
2165 struct delayed_work *delayed_work = to_delayed_work(work);
2166 struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm,
2167 scan_timeout_dwork);
2168
2169 IWL_ERR(mvm, "regular scan timed out\n");
2170
2171 iwl_force_nmi(mvm->trans);
2172}
2173
2174static void iwl_mvm_fill_scan_type(struct iwl_mvm *mvm,
2175 struct iwl_mvm_scan_params *params,
2176 struct ieee80211_vif *vif)
2177{
2178 if (iwl_mvm_is_cdb_supported(mvm)) {
2179 params->type =
2180 iwl_mvm_get_scan_type_band(mvm, vif,
2181 NL80211_BAND_2GHZ);
2182 params->hb_type =
2183 iwl_mvm_get_scan_type_band(mvm, vif,
2184 NL80211_BAND_5GHZ);
2185 } else {
2186 params->type = iwl_mvm_get_scan_type(mvm, vif);
2187 }
2188}
2189
2190struct iwl_scan_umac_handler {
2191 u8 version;
2192 int (*handler)(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2193 struct iwl_mvm_scan_params *params, int type, int uid);
2194};
2195
2196#define IWL_SCAN_UMAC_HANDLER(_ver) { \
2197 .version = _ver, \
2198 .handler = iwl_mvm_scan_umac_v##_ver, \
2199}
2200
2201static const struct iwl_scan_umac_handler iwl_scan_umac_handlers[] = {
2202 /* set the newest version first to shorten the list traverse time */
2203 IWL_SCAN_UMAC_HANDLER(14),
2204 IWL_SCAN_UMAC_HANDLER(12),
2205};
2206
2207static int iwl_mvm_build_scan_cmd(struct iwl_mvm *mvm,
2208 struct ieee80211_vif *vif,
2209 struct iwl_host_cmd *hcmd,
2210 struct iwl_mvm_scan_params *params,
2211 int type)
2212{
2213 int uid, i;
2214 u8 scan_ver;
2215
2216 lockdep_assert_held(&mvm->mutex);
2217 memset(mvm->scan_cmd, 0, ksize(mvm->scan_cmd));
2218
2219 if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2220 hcmd->id = SCAN_OFFLOAD_REQUEST_CMD;
2221
2222 return iwl_mvm_scan_lmac(mvm, vif, params);
2223 }
2224
2225 uid = iwl_mvm_scan_uid_by_status(mvm, 0);
2226 if (uid < 0)
2227 return uid;
2228
2229 hcmd->id = iwl_cmd_id(SCAN_REQ_UMAC, IWL_ALWAYS_LONG_GROUP, 0);
2230
2231 scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, IWL_ALWAYS_LONG_GROUP,
2232 SCAN_REQ_UMAC);
2233
2234 for (i = 0; i < ARRAY_SIZE(iwl_scan_umac_handlers); i++) {
2235 const struct iwl_scan_umac_handler *ver_handler =
2236 &iwl_scan_umac_handlers[i];
2237
2238 if (ver_handler->version != scan_ver)
2239 continue;
2240
2241 return ver_handler->handler(mvm, vif, params, type, uid);
2242 }
2243
2244 return iwl_mvm_scan_umac(mvm, vif, params, type, uid);
2245}
2246
2247int iwl_mvm_reg_scan_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2248 struct cfg80211_scan_request *req,
2249 struct ieee80211_scan_ies *ies)
2250{
2251 struct iwl_host_cmd hcmd = {
2252 .len = { iwl_mvm_scan_size(mvm), },
2253 .data = { mvm->scan_cmd, },
2254 .dataflags = { IWL_HCMD_DFL_NOCOPY, },
2255 };
2256 struct iwl_mvm_scan_params params = {};
2257 int ret;
2258 struct cfg80211_sched_scan_plan scan_plan = { .iterations = 1 };
2259
2260 lockdep_assert_held(&mvm->mutex);
2261
2262 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) {
2263 IWL_ERR(mvm, "scan while LAR regdomain is not set\n");
2264 return -EBUSY;
2265 }
2266
2267 ret = iwl_mvm_check_running_scans(mvm, IWL_MVM_SCAN_REGULAR);
2268 if (ret)
2269 return ret;
2270
2271 /* we should have failed registration if scan_cmd was NULL */
2272 if (WARN_ON(!mvm->scan_cmd))
2273 return -ENOMEM;
2274
2275 if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels))
2276 return -ENOBUFS;
2277
2278 params.n_ssids = req->n_ssids;
2279 params.flags = req->flags;
2280 params.n_channels = req->n_channels;
2281 params.delay = 0;
2282 params.ssids = req->ssids;
2283 params.channels = req->channels;
2284 params.mac_addr = req->mac_addr;
2285 params.mac_addr_mask = req->mac_addr_mask;
2286 params.no_cck = req->no_cck;
2287 params.pass_all = true;
2288 params.n_match_sets = 0;
2289 params.match_sets = NULL;
2290
2291 params.scan_plans = &scan_plan;
2292 params.n_scan_plans = 1;
2293
2294 iwl_mvm_fill_scan_type(mvm, ¶ms, vif);
2295
2296 ret = iwl_mvm_get_measurement_dwell(mvm, req, ¶ms);
2297 if (ret < 0)
2298 return ret;
2299
2300 params.measurement_dwell = ret;
2301
2302 iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms);
2303
2304 ret = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, ¶ms,
2305 IWL_MVM_SCAN_REGULAR);
2306
2307 if (ret)
2308 return ret;
2309
2310 iwl_mvm_pause_tcm(mvm, false);
2311
2312 ret = iwl_mvm_send_cmd(mvm, &hcmd);
2313 if (ret) {
2314 /* If the scan failed, it usually means that the FW was unable
2315 * to allocate the time events. Warn on it, but maybe we
2316 * should try to send the command again with different params.
2317 */
2318 IWL_ERR(mvm, "Scan failed! ret %d\n", ret);
2319 iwl_mvm_resume_tcm(mvm);
2320 return ret;
2321 }
2322
2323 IWL_DEBUG_SCAN(mvm, "Scan request was sent successfully\n");
2324 mvm->scan_status |= IWL_MVM_SCAN_REGULAR;
2325 mvm->scan_vif = iwl_mvm_vif_from_mac80211(vif);
2326
2327 schedule_delayed_work(&mvm->scan_timeout_dwork,
2328 msecs_to_jiffies(SCAN_TIMEOUT));
2329
2330 return 0;
2331}
2332
2333int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm,
2334 struct ieee80211_vif *vif,
2335 struct cfg80211_sched_scan_request *req,
2336 struct ieee80211_scan_ies *ies,
2337 int type)
2338{
2339 struct iwl_host_cmd hcmd = {
2340 .len = { iwl_mvm_scan_size(mvm), },
2341 .data = { mvm->scan_cmd, },
2342 .dataflags = { IWL_HCMD_DFL_NOCOPY, },
2343 };
2344 struct iwl_mvm_scan_params params = {};
2345 int ret;
2346
2347 lockdep_assert_held(&mvm->mutex);
2348
2349 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) {
2350 IWL_ERR(mvm, "sched-scan while LAR regdomain is not set\n");
2351 return -EBUSY;
2352 }
2353
2354 ret = iwl_mvm_check_running_scans(mvm, type);
2355 if (ret)
2356 return ret;
2357
2358 /* we should have failed registration if scan_cmd was NULL */
2359 if (WARN_ON(!mvm->scan_cmd))
2360 return -ENOMEM;
2361
2362 if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels))
2363 return -ENOBUFS;
2364
2365 params.n_ssids = req->n_ssids;
2366 params.flags = req->flags;
2367 params.n_channels = req->n_channels;
2368 params.ssids = req->ssids;
2369 params.channels = req->channels;
2370 params.mac_addr = req->mac_addr;
2371 params.mac_addr_mask = req->mac_addr_mask;
2372 params.no_cck = false;
2373 params.pass_all = iwl_mvm_scan_pass_all(mvm, req);
2374 params.n_match_sets = req->n_match_sets;
2375 params.match_sets = req->match_sets;
2376 if (!req->n_scan_plans)
2377 return -EINVAL;
2378
2379 params.n_scan_plans = req->n_scan_plans;
2380 params.scan_plans = req->scan_plans;
2381
2382 iwl_mvm_fill_scan_type(mvm, ¶ms, vif);
2383
2384 /* In theory, LMAC scans can handle a 32-bit delay, but since
2385 * waiting for over 18 hours to start the scan is a bit silly
2386 * and to keep it aligned with UMAC scans (which only support
2387 * 16-bit delays), trim it down to 16-bits.
2388 */
2389 if (req->delay > U16_MAX) {
2390 IWL_DEBUG_SCAN(mvm,
2391 "delay value is > 16-bits, set to max possible\n");
2392 params.delay = U16_MAX;
2393 } else {
2394 params.delay = req->delay;
2395 }
2396
2397 ret = iwl_mvm_config_sched_scan_profiles(mvm, req);
2398 if (ret)
2399 return ret;
2400
2401 iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms);
2402
2403 ret = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, ¶ms, type);
2404
2405 if (ret)
2406 return ret;
2407
2408 ret = iwl_mvm_send_cmd(mvm, &hcmd);
2409 if (!ret) {
2410 IWL_DEBUG_SCAN(mvm,
2411 "Sched scan request was sent successfully\n");
2412 mvm->scan_status |= type;
2413 } else {
2414 /* If the scan failed, it usually means that the FW was unable
2415 * to allocate the time events. Warn on it, but maybe we
2416 * should try to send the command again with different params.
2417 */
2418 IWL_ERR(mvm, "Sched scan failed! ret %d\n", ret);
2419 }
2420
2421 return ret;
2422}
2423
2424void iwl_mvm_rx_umac_scan_complete_notif(struct iwl_mvm *mvm,
2425 struct iwl_rx_cmd_buffer *rxb)
2426{
2427 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2428 struct iwl_umac_scan_complete *notif = (void *)pkt->data;
2429 u32 uid = __le32_to_cpu(notif->uid);
2430 bool aborted = (notif->status == IWL_SCAN_OFFLOAD_ABORTED);
2431
2432 if (WARN_ON(!(mvm->scan_uid_status[uid] & mvm->scan_status)))
2433 return;
2434
2435 /* if the scan is already stopping, we don't need to notify mac80211 */
2436 if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_REGULAR) {
2437 struct cfg80211_scan_info info = {
2438 .aborted = aborted,
2439 .scan_start_tsf = mvm->scan_start,
2440 };
2441
2442 memcpy(info.tsf_bssid, mvm->scan_vif->bssid, ETH_ALEN);
2443 ieee80211_scan_completed(mvm->hw, &info);
2444 mvm->scan_vif = NULL;
2445 cancel_delayed_work(&mvm->scan_timeout_dwork);
2446 iwl_mvm_resume_tcm(mvm);
2447 } else if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_SCHED) {
2448 ieee80211_sched_scan_stopped(mvm->hw);
2449 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
2450 }
2451
2452 mvm->scan_status &= ~mvm->scan_uid_status[uid];
2453 IWL_DEBUG_SCAN(mvm,
2454 "Scan completed, uid %u type %u, status %s, EBS status %s\n",
2455 uid, mvm->scan_uid_status[uid],
2456 notif->status == IWL_SCAN_OFFLOAD_COMPLETED ?
2457 "completed" : "aborted",
2458 iwl_mvm_ebs_status_str(notif->ebs_status));
2459 IWL_DEBUG_SCAN(mvm,
2460 "Last line %d, Last iteration %d, Time from last iteration %d\n",
2461 notif->last_schedule, notif->last_iter,
2462 __le32_to_cpu(notif->time_from_last_iter));
2463
2464 if (notif->ebs_status != IWL_SCAN_EBS_SUCCESS &&
2465 notif->ebs_status != IWL_SCAN_EBS_INACTIVE)
2466 mvm->last_ebs_successful = false;
2467
2468 mvm->scan_uid_status[uid] = 0;
2469}
2470
2471void iwl_mvm_rx_umac_scan_iter_complete_notif(struct iwl_mvm *mvm,
2472 struct iwl_rx_cmd_buffer *rxb)
2473{
2474 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2475 struct iwl_umac_scan_iter_complete_notif *notif = (void *)pkt->data;
2476
2477 mvm->scan_start = le64_to_cpu(notif->start_tsf);
2478
2479 IWL_DEBUG_SCAN(mvm,
2480 "UMAC Scan iteration complete: status=0x%x scanned_channels=%d\n",
2481 notif->status, notif->scanned_channels);
2482
2483 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) {
2484 IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n");
2485 ieee80211_sched_scan_results(mvm->hw);
2486 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED;
2487 }
2488
2489 IWL_DEBUG_SCAN(mvm,
2490 "UMAC Scan iteration complete: scan started at %llu (TSF)\n",
2491 mvm->scan_start);
2492}
2493
2494static int iwl_mvm_umac_scan_abort(struct iwl_mvm *mvm, int type)
2495{
2496 struct iwl_umac_scan_abort cmd = {};
2497 int uid, ret;
2498
2499 lockdep_assert_held(&mvm->mutex);
2500
2501 /* We should always get a valid index here, because we already
2502 * checked that this type of scan was running in the generic
2503 * code.
2504 */
2505 uid = iwl_mvm_scan_uid_by_status(mvm, type);
2506 if (WARN_ON_ONCE(uid < 0))
2507 return uid;
2508
2509 cmd.uid = cpu_to_le32(uid);
2510
2511 IWL_DEBUG_SCAN(mvm, "Sending scan abort, uid %u\n", uid);
2512
2513 ret = iwl_mvm_send_cmd_pdu(mvm,
2514 iwl_cmd_id(SCAN_ABORT_UMAC,
2515 IWL_ALWAYS_LONG_GROUP, 0),
2516 0, sizeof(cmd), &cmd);
2517 if (!ret)
2518 mvm->scan_uid_status[uid] = type << IWL_MVM_SCAN_STOPPING_SHIFT;
2519
2520 return ret;
2521}
2522
2523static int iwl_mvm_scan_stop_wait(struct iwl_mvm *mvm, int type)
2524{
2525 struct iwl_notification_wait wait_scan_done;
2526 static const u16 scan_done_notif[] = { SCAN_COMPLETE_UMAC,
2527 SCAN_OFFLOAD_COMPLETE, };
2528 int ret;
2529
2530 lockdep_assert_held(&mvm->mutex);
2531
2532 iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_done,
2533 scan_done_notif,
2534 ARRAY_SIZE(scan_done_notif),
2535 NULL, NULL);
2536
2537 IWL_DEBUG_SCAN(mvm, "Preparing to stop scan, type %x\n", type);
2538
2539 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
2540 ret = iwl_mvm_umac_scan_abort(mvm, type);
2541 else
2542 ret = iwl_mvm_lmac_scan_abort(mvm);
2543
2544 if (ret) {
2545 IWL_DEBUG_SCAN(mvm, "couldn't stop scan type %d\n", type);
2546 iwl_remove_notification(&mvm->notif_wait, &wait_scan_done);
2547 return ret;
2548 }
2549
2550 return iwl_wait_notification(&mvm->notif_wait, &wait_scan_done,
2551 1 * HZ);
2552}
2553
2554#define IWL_SCAN_REQ_UMAC_HANDLE_SIZE(_ver) { \
2555 case (_ver): return sizeof(struct iwl_scan_req_umac_v##_ver); \
2556}
2557
2558static int iwl_scan_req_umac_get_size(u8 scan_ver)
2559{
2560 switch (scan_ver) {
2561 IWL_SCAN_REQ_UMAC_HANDLE_SIZE(14);
2562 IWL_SCAN_REQ_UMAC_HANDLE_SIZE(12);
2563 }
2564
2565 return 0;
2566}
2567
2568int iwl_mvm_scan_size(struct iwl_mvm *mvm)
2569{
2570 int base_size, tail_size;
2571 u8 scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, IWL_ALWAYS_LONG_GROUP,
2572 SCAN_REQ_UMAC);
2573
2574 base_size = iwl_scan_req_umac_get_size(scan_ver);
2575 if (base_size)
2576 return base_size;
2577
2578
2579 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm))
2580 base_size = IWL_SCAN_REQ_UMAC_SIZE_V8;
2581 else if (iwl_mvm_is_adaptive_dwell_supported(mvm))
2582 base_size = IWL_SCAN_REQ_UMAC_SIZE_V7;
2583 else if (iwl_mvm_cdb_scan_api(mvm))
2584 base_size = IWL_SCAN_REQ_UMAC_SIZE_V6;
2585 else
2586 base_size = IWL_SCAN_REQ_UMAC_SIZE_V1;
2587
2588 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2589 if (iwl_mvm_is_scan_ext_chan_supported(mvm))
2590 tail_size = sizeof(struct iwl_scan_req_umac_tail_v2);
2591 else
2592 tail_size = sizeof(struct iwl_scan_req_umac_tail_v1);
2593
2594 return base_size +
2595 sizeof(struct iwl_scan_channel_cfg_umac) *
2596 mvm->fw->ucode_capa.n_scan_channels +
2597 tail_size;
2598 }
2599 return sizeof(struct iwl_scan_req_lmac) +
2600 sizeof(struct iwl_scan_channel_cfg_lmac) *
2601 mvm->fw->ucode_capa.n_scan_channels +
2602 sizeof(struct iwl_scan_probe_req_v1);
2603}
2604
2605/*
2606 * This function is used in nic restart flow, to inform mac80211 about scans
2607 * that was aborted by restart flow or by an assert.
2608 */
2609void iwl_mvm_report_scan_aborted(struct iwl_mvm *mvm)
2610{
2611 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2612 int uid, i;
2613
2614 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_REGULAR);
2615 if (uid >= 0) {
2616 struct cfg80211_scan_info info = {
2617 .aborted = true,
2618 };
2619
2620 ieee80211_scan_completed(mvm->hw, &info);
2621 mvm->scan_uid_status[uid] = 0;
2622 }
2623 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_SCHED);
2624 if (uid >= 0 && !mvm->fw_restart) {
2625 ieee80211_sched_scan_stopped(mvm->hw);
2626 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
2627 mvm->scan_uid_status[uid] = 0;
2628 }
2629
2630 /* We shouldn't have any UIDs still set. Loop over all the
2631 * UIDs to make sure there's nothing left there and warn if
2632 * any is found.
2633 */
2634 for (i = 0; i < mvm->max_scans; i++) {
2635 if (WARN_ONCE(mvm->scan_uid_status[i],
2636 "UMAC scan UID %d status was not cleaned\n",
2637 i))
2638 mvm->scan_uid_status[i] = 0;
2639 }
2640 } else {
2641 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) {
2642 struct cfg80211_scan_info info = {
2643 .aborted = true,
2644 };
2645
2646 ieee80211_scan_completed(mvm->hw, &info);
2647 }
2648
2649 /* Sched scan will be restarted by mac80211 in
2650 * restart_hw, so do not report if FW is about to be
2651 * restarted.
2652 */
2653 if ((mvm->scan_status & IWL_MVM_SCAN_SCHED) &&
2654 !mvm->fw_restart) {
2655 ieee80211_sched_scan_stopped(mvm->hw);
2656 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
2657 }
2658 }
2659}
2660
2661int iwl_mvm_scan_stop(struct iwl_mvm *mvm, int type, bool notify)
2662{
2663 int ret;
2664
2665 if (!(mvm->scan_status & type))
2666 return 0;
2667
2668 if (iwl_mvm_is_radio_killed(mvm)) {
2669 ret = 0;
2670 goto out;
2671 }
2672
2673 ret = iwl_mvm_scan_stop_wait(mvm, type);
2674 if (!ret)
2675 mvm->scan_status |= type << IWL_MVM_SCAN_STOPPING_SHIFT;
2676out:
2677 /* Clear the scan status so the next scan requests will
2678 * succeed and mark the scan as stopping, so that the Rx
2679 * handler doesn't do anything, as the scan was stopped from
2680 * above.
2681 */
2682 mvm->scan_status &= ~type;
2683
2684 if (type == IWL_MVM_SCAN_REGULAR) {
2685 cancel_delayed_work(&mvm->scan_timeout_dwork);
2686 if (notify) {
2687 struct cfg80211_scan_info info = {
2688 .aborted = true,
2689 };
2690
2691 ieee80211_scan_completed(mvm->hw, &info);
2692 }
2693 } else if (notify) {
2694 ieee80211_sched_scan_stopped(mvm->hw);
2695 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
2696 }
2697
2698 return ret;
2699}