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1/******************************************************************************
2 *
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
5 *
6 * GPL LICENSE SUMMARY
7 *
8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
10 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of version 2 of the GNU General Public License as
14 * published by the Free Software Foundation.
15 *
16 * This program is distributed in the hope that it will be useful, but
17 * WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
24 * USA
25 *
26 * The full GNU General Public License is included in this distribution
27 * in the file called COPYING.
28 *
29 * Contact Information:
30 * Intel Linux Wireless <linuxwifi@intel.com>
31 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
32 *
33 * BSD LICENSE
34 *
35 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
36 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
37 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
38 * Copyright(c) 2018 Intel Corporation
39 * All rights reserved.
40 *
41 * Redistribution and use in source and binary forms, with or without
42 * modification, are permitted provided that the following conditions
43 * are met:
44 *
45 * * Redistributions of source code must retain the above copyright
46 * notice, this list of conditions and the following disclaimer.
47 * * Redistributions in binary form must reproduce the above copyright
48 * notice, this list of conditions and the following disclaimer in
49 * the documentation and/or other materials provided with the
50 * distribution.
51 * * Neither the name Intel Corporation nor the names of its
52 * contributors may be used to endorse or promote products derived
53 * from this software without specific prior written permission.
54 *
55 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
56 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
57 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
58 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
59 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
60 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
61 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
62 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
63 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
64 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
65 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
66 *
67 *****************************************************************************/
68
69#include <linux/etherdevice.h>
70#include <net/mac80211.h>
71
72#include "mvm.h"
73#include "fw/api/scan.h"
74#include "iwl-io.h"
75
76#define IWL_DENSE_EBS_SCAN_RATIO 5
77#define IWL_SPARSE_EBS_SCAN_RATIO 1
78
79enum iwl_mvm_traffic_load {
80 IWL_MVM_TRAFFIC_LOW,
81 IWL_MVM_TRAFFIC_MEDIUM,
82 IWL_MVM_TRAFFIC_HIGH,
83};
84
85#define IWL_SCAN_DWELL_ACTIVE 10
86#define IWL_SCAN_DWELL_PASSIVE 110
87#define IWL_SCAN_DWELL_FRAGMENTED 44
88#define IWL_SCAN_DWELL_EXTENDED 90
89#define IWL_SCAN_NUM_OF_FRAGS 3
90
91
92/* adaptive dwell max budget time [TU] for full scan */
93#define IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN 300
94/* adaptive dwell max budget time [TU] for directed scan */
95#define IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN 100
96/* adaptive dwell default APs number */
97#define IWL_SCAN_ADWELL_DEFAULT_N_APS 2
98/* adaptive dwell default APs number in social channels (1, 6, 11) */
99#define IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL 10
100
101struct iwl_mvm_scan_timing_params {
102 u32 suspend_time;
103 u32 max_out_time;
104};
105
106static struct iwl_mvm_scan_timing_params scan_timing[] = {
107 [IWL_SCAN_TYPE_UNASSOC] = {
108 .suspend_time = 0,
109 .max_out_time = 0,
110 },
111 [IWL_SCAN_TYPE_WILD] = {
112 .suspend_time = 30,
113 .max_out_time = 120,
114 },
115 [IWL_SCAN_TYPE_MILD] = {
116 .suspend_time = 120,
117 .max_out_time = 120,
118 },
119 [IWL_SCAN_TYPE_FRAGMENTED] = {
120 .suspend_time = 95,
121 .max_out_time = 44,
122 },
123};
124
125struct iwl_mvm_scan_params {
126 enum iwl_mvm_scan_type type;
127 u32 n_channels;
128 u16 delay;
129 int n_ssids;
130 struct cfg80211_ssid *ssids;
131 struct ieee80211_channel **channels;
132 u32 flags;
133 u8 *mac_addr;
134 u8 *mac_addr_mask;
135 bool no_cck;
136 bool pass_all;
137 int n_match_sets;
138 struct iwl_scan_probe_req preq;
139 struct cfg80211_match_set *match_sets;
140 int n_scan_plans;
141 struct cfg80211_sched_scan_plan *scan_plans;
142 u32 measurement_dwell;
143};
144
145static inline void *iwl_mvm_get_scan_req_umac_data(struct iwl_mvm *mvm)
146{
147 struct iwl_scan_req_umac *cmd = mvm->scan_cmd;
148
149 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm))
150 return (void *)&cmd->v8.data;
151
152 if (iwl_mvm_is_adaptive_dwell_supported(mvm))
153 return (void *)&cmd->v7.data;
154
155 if (iwl_mvm_has_new_tx_api(mvm))
156 return (void *)&cmd->v6.data;
157
158 return (void *)&cmd->v1.data;
159}
160
161static inline struct iwl_scan_umac_chan_param *
162iwl_mvm_get_scan_req_umac_channel(struct iwl_mvm *mvm)
163{
164 struct iwl_scan_req_umac *cmd = mvm->scan_cmd;
165
166 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm))
167 return &cmd->v8.channel;
168
169 if (iwl_mvm_is_adaptive_dwell_supported(mvm))
170 return &cmd->v7.channel;
171
172 if (iwl_mvm_has_new_tx_api(mvm))
173 return &cmd->v6.channel;
174
175 return &cmd->v1.channel;
176}
177
178static u8 iwl_mvm_scan_rx_ant(struct iwl_mvm *mvm)
179{
180 if (mvm->scan_rx_ant != ANT_NONE)
181 return mvm->scan_rx_ant;
182 return iwl_mvm_get_valid_rx_ant(mvm);
183}
184
185static inline __le16 iwl_mvm_scan_rx_chain(struct iwl_mvm *mvm)
186{
187 u16 rx_chain;
188 u8 rx_ant;
189
190 rx_ant = iwl_mvm_scan_rx_ant(mvm);
191 rx_chain = rx_ant << PHY_RX_CHAIN_VALID_POS;
192 rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_MIMO_SEL_POS;
193 rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_SEL_POS;
194 rx_chain |= 0x1 << PHY_RX_CHAIN_DRIVER_FORCE_POS;
195 return cpu_to_le16(rx_chain);
196}
197
198static __le32 iwl_mvm_scan_rxon_flags(enum nl80211_band band)
199{
200 if (band == NL80211_BAND_2GHZ)
201 return cpu_to_le32(PHY_BAND_24);
202 else
203 return cpu_to_le32(PHY_BAND_5);
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 mvm->scan_last_antenna_idx =
213 iwl_mvm_next_antenna(mvm, iwl_mvm_get_valid_tx_ant(mvm),
214 mvm->scan_last_antenna_idx);
215 tx_ant = BIT(mvm->scan_last_antenna_idx) << RATE_MCS_ANT_POS;
216
217 if (band == NL80211_BAND_2GHZ && !no_cck)
218 return cpu_to_le32(IWL_RATE_1M_PLCP | RATE_MCS_CCK_MSK |
219 tx_ant);
220 else
221 return cpu_to_le32(IWL_RATE_6M_PLCP | tx_ant);
222}
223
224static void iwl_mvm_scan_condition_iterator(void *data, u8 *mac,
225 struct ieee80211_vif *vif)
226{
227 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
228 int *global_cnt = data;
229
230 if (vif->type != NL80211_IFTYPE_P2P_DEVICE && mvmvif->phy_ctxt &&
231 mvmvif->phy_ctxt->id < NUM_PHY_CTX)
232 *global_cnt += 1;
233}
234
235static enum iwl_mvm_traffic_load iwl_mvm_get_traffic_load(struct iwl_mvm *mvm)
236{
237 return IWL_MVM_TRAFFIC_LOW;
238}
239
240static enum
241iwl_mvm_scan_type iwl_mvm_get_scan_type(struct iwl_mvm *mvm, bool p2p_device)
242{
243 int global_cnt = 0;
244 enum iwl_mvm_traffic_load load;
245 bool low_latency;
246
247 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
248 IEEE80211_IFACE_ITER_NORMAL,
249 iwl_mvm_scan_condition_iterator,
250 &global_cnt);
251 if (!global_cnt)
252 return IWL_SCAN_TYPE_UNASSOC;
253
254 load = iwl_mvm_get_traffic_load(mvm);
255 low_latency = iwl_mvm_low_latency(mvm);
256
257 if ((load == IWL_MVM_TRAFFIC_HIGH || low_latency) && !p2p_device &&
258 fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_FRAGMENTED_SCAN))
259 return IWL_SCAN_TYPE_FRAGMENTED;
260
261 if (load >= IWL_MVM_TRAFFIC_MEDIUM || low_latency)
262 return IWL_SCAN_TYPE_MILD;
263
264 return IWL_SCAN_TYPE_WILD;
265}
266
267static int
268iwl_mvm_get_measurement_dwell(struct iwl_mvm *mvm,
269 struct cfg80211_scan_request *req,
270 struct iwl_mvm_scan_params *params)
271{
272 if (!req->duration)
273 return 0;
274
275 if (req->duration_mandatory &&
276 req->duration > scan_timing[params->type].max_out_time) {
277 IWL_DEBUG_SCAN(mvm,
278 "Measurement scan - too long dwell %hu (max out time %u)\n",
279 req->duration,
280 scan_timing[params->type].max_out_time);
281 return -EOPNOTSUPP;
282 }
283
284 return min_t(u32, (u32)req->duration,
285 scan_timing[params->type].max_out_time);
286}
287
288static inline bool iwl_mvm_rrm_scan_needed(struct iwl_mvm *mvm)
289{
290 /* require rrm scan whenever the fw supports it */
291 return fw_has_capa(&mvm->fw->ucode_capa,
292 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT);
293}
294
295static int iwl_mvm_max_scan_ie_fw_cmd_room(struct iwl_mvm *mvm)
296{
297 int max_probe_len;
298
299 max_probe_len = SCAN_OFFLOAD_PROBE_REQ_SIZE;
300
301 /* we create the 802.11 header and SSID element */
302 max_probe_len -= 24 + 2;
303
304 /* DS parameter set element is added on 2.4GHZ band if required */
305 if (iwl_mvm_rrm_scan_needed(mvm))
306 max_probe_len -= 3;
307
308 return max_probe_len;
309}
310
311int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm)
312{
313 int max_ie_len = iwl_mvm_max_scan_ie_fw_cmd_room(mvm);
314
315 /* TODO: [BUG] This function should return the maximum allowed size of
316 * scan IEs, however the LMAC scan api contains both 2GHZ and 5GHZ IEs
317 * in the same command. So the correct implementation of this function
318 * is just iwl_mvm_max_scan_ie_fw_cmd_room() / 2. Currently the scan
319 * command has only 512 bytes and it would leave us with about 240
320 * bytes for scan IEs, which is clearly not enough. So meanwhile
321 * we will report an incorrect value. This may result in a failure to
322 * issue a scan in unified_scan_lmac and unified_sched_scan_lmac
323 * functions with -ENOBUFS, if a large enough probe will be provided.
324 */
325 return max_ie_len;
326}
327
328void iwl_mvm_rx_lmac_scan_iter_complete_notif(struct iwl_mvm *mvm,
329 struct iwl_rx_cmd_buffer *rxb)
330{
331 struct iwl_rx_packet *pkt = rxb_addr(rxb);
332 struct iwl_lmac_scan_complete_notif *notif = (void *)pkt->data;
333
334 IWL_DEBUG_SCAN(mvm,
335 "Scan offload iteration complete: status=0x%x scanned channels=%d\n",
336 notif->status, notif->scanned_channels);
337
338 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) {
339 IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n");
340 ieee80211_sched_scan_results(mvm->hw);
341 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED;
342 }
343}
344
345void iwl_mvm_rx_scan_match_found(struct iwl_mvm *mvm,
346 struct iwl_rx_cmd_buffer *rxb)
347{
348 IWL_DEBUG_SCAN(mvm, "Scheduled scan results\n");
349 ieee80211_sched_scan_results(mvm->hw);
350}
351
352static const char *iwl_mvm_ebs_status_str(enum iwl_scan_ebs_status status)
353{
354 switch (status) {
355 case IWL_SCAN_EBS_SUCCESS:
356 return "successful";
357 case IWL_SCAN_EBS_INACTIVE:
358 return "inactive";
359 case IWL_SCAN_EBS_FAILED:
360 case IWL_SCAN_EBS_CHAN_NOT_FOUND:
361 default:
362 return "failed";
363 }
364}
365
366void iwl_mvm_rx_lmac_scan_complete_notif(struct iwl_mvm *mvm,
367 struct iwl_rx_cmd_buffer *rxb)
368{
369 struct iwl_rx_packet *pkt = rxb_addr(rxb);
370 struct iwl_periodic_scan_complete *scan_notif = (void *)pkt->data;
371 bool aborted = (scan_notif->status == IWL_SCAN_OFFLOAD_ABORTED);
372
373 /* If this happens, the firmware has mistakenly sent an LMAC
374 * notification during UMAC scans -- warn and ignore it.
375 */
376 if (WARN_ON_ONCE(fw_has_capa(&mvm->fw->ucode_capa,
377 IWL_UCODE_TLV_CAPA_UMAC_SCAN)))
378 return;
379
380 /* scan status must be locked for proper checking */
381 lockdep_assert_held(&mvm->mutex);
382
383 /* We first check if we were stopping a scan, in which case we
384 * just clear the stopping flag. Then we check if it was a
385 * firmware initiated stop, in which case we need to inform
386 * mac80211.
387 * Note that we can have a stopping and a running scan
388 * simultaneously, but we can't have two different types of
389 * scans stopping or running at the same time (since LMAC
390 * doesn't support it).
391 */
392
393 if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_SCHED) {
394 WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR);
395
396 IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n",
397 aborted ? "aborted" : "completed",
398 iwl_mvm_ebs_status_str(scan_notif->ebs_status));
399 IWL_DEBUG_SCAN(mvm,
400 "Last line %d, Last iteration %d, Time after last iteration %d\n",
401 scan_notif->last_schedule_line,
402 scan_notif->last_schedule_iteration,
403 __le32_to_cpu(scan_notif->time_after_last_iter));
404
405 mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_SCHED;
406 } else if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR) {
407 IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s\n",
408 aborted ? "aborted" : "completed",
409 iwl_mvm_ebs_status_str(scan_notif->ebs_status));
410
411 mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_REGULAR;
412 } else if (mvm->scan_status & IWL_MVM_SCAN_SCHED) {
413 WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_REGULAR);
414
415 IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n",
416 aborted ? "aborted" : "completed",
417 iwl_mvm_ebs_status_str(scan_notif->ebs_status));
418 IWL_DEBUG_SCAN(mvm,
419 "Last line %d, Last iteration %d, Time after last iteration %d (FW)\n",
420 scan_notif->last_schedule_line,
421 scan_notif->last_schedule_iteration,
422 __le32_to_cpu(scan_notif->time_after_last_iter));
423
424 mvm->scan_status &= ~IWL_MVM_SCAN_SCHED;
425 ieee80211_sched_scan_stopped(mvm->hw);
426 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
427 } else if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) {
428 struct cfg80211_scan_info info = {
429 .aborted = aborted,
430 };
431
432 IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s (FW)\n",
433 aborted ? "aborted" : "completed",
434 iwl_mvm_ebs_status_str(scan_notif->ebs_status));
435
436 mvm->scan_status &= ~IWL_MVM_SCAN_REGULAR;
437 ieee80211_scan_completed(mvm->hw, &info);
438 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
439 cancel_delayed_work(&mvm->scan_timeout_dwork);
440 } else {
441 IWL_ERR(mvm,
442 "got scan complete notification but no scan is running\n");
443 }
444
445 mvm->last_ebs_successful =
446 scan_notif->ebs_status == IWL_SCAN_EBS_SUCCESS ||
447 scan_notif->ebs_status == IWL_SCAN_EBS_INACTIVE;
448}
449
450static int iwl_ssid_exist(u8 *ssid, u8 ssid_len, struct iwl_ssid_ie *ssid_list)
451{
452 int i;
453
454 for (i = 0; i < PROBE_OPTION_MAX; i++) {
455 if (!ssid_list[i].len)
456 break;
457 if (ssid_list[i].len == ssid_len &&
458 !memcmp(ssid_list->ssid, ssid, ssid_len))
459 return i;
460 }
461 return -1;
462}
463
464/* We insert the SSIDs in an inverted order, because the FW will
465 * invert it back.
466 */
467static void iwl_scan_build_ssids(struct iwl_mvm_scan_params *params,
468 struct iwl_ssid_ie *ssids,
469 u32 *ssid_bitmap)
470{
471 int i, j;
472 int index;
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 *ssid_bitmap = 0;
493 for (j = params->n_ssids - 1;
494 j >= 0 && i < PROBE_OPTION_MAX;
495 i++, j--) {
496 index = iwl_ssid_exist(params->ssids[j].ssid,
497 params->ssids[j].ssid_len,
498 ssids);
499 if (index < 0) {
500 ssids[i].id = WLAN_EID_SSID;
501 ssids[i].len = params->ssids[j].ssid_len;
502 memcpy(ssids[i].ssid, params->ssids[j].ssid,
503 ssids[i].len);
504 *ssid_bitmap |= BIT(i);
505 } else {
506 *ssid_bitmap |= BIT(index);
507 }
508 }
509}
510
511static int
512iwl_mvm_config_sched_scan_profiles(struct iwl_mvm *mvm,
513 struct cfg80211_sched_scan_request *req)
514{
515 struct iwl_scan_offload_profile *profile;
516 struct iwl_scan_offload_profile_cfg *profile_cfg;
517 struct iwl_scan_offload_blacklist *blacklist;
518 struct iwl_host_cmd cmd = {
519 .id = SCAN_OFFLOAD_UPDATE_PROFILES_CMD,
520 .len[1] = sizeof(*profile_cfg),
521 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
522 .dataflags[1] = IWL_HCMD_DFL_NOCOPY,
523 };
524 int blacklist_len;
525 int i;
526 int ret;
527
528 if (WARN_ON(req->n_match_sets > IWL_SCAN_MAX_PROFILES))
529 return -EIO;
530
531 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SHORT_BL)
532 blacklist_len = IWL_SCAN_SHORT_BLACKLIST_LEN;
533 else
534 blacklist_len = IWL_SCAN_MAX_BLACKLIST_LEN;
535
536 blacklist = kzalloc(sizeof(*blacklist) * blacklist_len, GFP_KERNEL);
537 if (!blacklist)
538 return -ENOMEM;
539
540 profile_cfg = kzalloc(sizeof(*profile_cfg), GFP_KERNEL);
541 if (!profile_cfg) {
542 ret = -ENOMEM;
543 goto free_blacklist;
544 }
545
546 cmd.data[0] = blacklist;
547 cmd.len[0] = sizeof(*blacklist) * blacklist_len;
548 cmd.data[1] = profile_cfg;
549
550 /* No blacklist configuration */
551
552 profile_cfg->num_profiles = req->n_match_sets;
553 profile_cfg->active_clients = SCAN_CLIENT_SCHED_SCAN;
554 profile_cfg->pass_match = SCAN_CLIENT_SCHED_SCAN;
555 profile_cfg->match_notify = SCAN_CLIENT_SCHED_SCAN;
556 if (!req->n_match_sets || !req->match_sets[0].ssid.ssid_len)
557 profile_cfg->any_beacon_notify = SCAN_CLIENT_SCHED_SCAN;
558
559 for (i = 0; i < req->n_match_sets; i++) {
560 profile = &profile_cfg->profiles[i];
561 profile->ssid_index = i;
562 /* Support any cipher and auth algorithm */
563 profile->unicast_cipher = 0xff;
564 profile->auth_alg = 0xff;
565 profile->network_type = IWL_NETWORK_TYPE_ANY;
566 profile->band_selection = IWL_SCAN_OFFLOAD_SELECT_ANY;
567 profile->client_bitmap = SCAN_CLIENT_SCHED_SCAN;
568 }
569
570 IWL_DEBUG_SCAN(mvm, "Sending scheduled scan profile config\n");
571
572 ret = iwl_mvm_send_cmd(mvm, &cmd);
573 kfree(profile_cfg);
574free_blacklist:
575 kfree(blacklist);
576
577 return ret;
578}
579
580static bool iwl_mvm_scan_pass_all(struct iwl_mvm *mvm,
581 struct cfg80211_sched_scan_request *req)
582{
583 if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) {
584 IWL_DEBUG_SCAN(mvm,
585 "Sending scheduled scan with filtering, n_match_sets %d\n",
586 req->n_match_sets);
587 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
588 return false;
589 }
590
591 IWL_DEBUG_SCAN(mvm, "Sending Scheduled scan without filtering\n");
592
593 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED;
594 return true;
595}
596
597static int iwl_mvm_lmac_scan_abort(struct iwl_mvm *mvm)
598{
599 int ret;
600 struct iwl_host_cmd cmd = {
601 .id = SCAN_OFFLOAD_ABORT_CMD,
602 };
603 u32 status = CAN_ABORT_STATUS;
604
605 ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status);
606 if (ret)
607 return ret;
608
609 if (status != CAN_ABORT_STATUS) {
610 /*
611 * The scan abort will return 1 for success or
612 * 2 for "failure". A failure condition can be
613 * due to simply not being in an active scan which
614 * can occur if we send the scan abort before the
615 * microcode has notified us that a scan is completed.
616 */
617 IWL_DEBUG_SCAN(mvm, "SCAN OFFLOAD ABORT ret %d.\n", status);
618 ret = -ENOENT;
619 }
620
621 return ret;
622}
623
624static void iwl_mvm_scan_fill_tx_cmd(struct iwl_mvm *mvm,
625 struct iwl_scan_req_tx_cmd *tx_cmd,
626 bool no_cck)
627{
628 tx_cmd[0].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL |
629 TX_CMD_FLG_BT_DIS);
630 tx_cmd[0].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm,
631 NL80211_BAND_2GHZ,
632 no_cck);
633 tx_cmd[0].sta_id = mvm->aux_sta.sta_id;
634
635 tx_cmd[1].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL |
636 TX_CMD_FLG_BT_DIS);
637 tx_cmd[1].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm,
638 NL80211_BAND_5GHZ,
639 no_cck);
640 tx_cmd[1].sta_id = mvm->aux_sta.sta_id;
641}
642
643static void
644iwl_mvm_lmac_scan_cfg_channels(struct iwl_mvm *mvm,
645 struct ieee80211_channel **channels,
646 int n_channels, u32 ssid_bitmap,
647 struct iwl_scan_req_lmac *cmd)
648{
649 struct iwl_scan_channel_cfg_lmac *channel_cfg = (void *)&cmd->data;
650 int i;
651
652 for (i = 0; i < n_channels; i++) {
653 channel_cfg[i].channel_num =
654 cpu_to_le16(channels[i]->hw_value);
655 channel_cfg[i].iter_count = cpu_to_le16(1);
656 channel_cfg[i].iter_interval = 0;
657 channel_cfg[i].flags =
658 cpu_to_le32(IWL_UNIFIED_SCAN_CHANNEL_PARTIAL |
659 ssid_bitmap);
660 }
661}
662
663static u8 *iwl_mvm_copy_and_insert_ds_elem(struct iwl_mvm *mvm, const u8 *ies,
664 size_t len, u8 *const pos)
665{
666 static const u8 before_ds_params[] = {
667 WLAN_EID_SSID,
668 WLAN_EID_SUPP_RATES,
669 WLAN_EID_REQUEST,
670 WLAN_EID_EXT_SUPP_RATES,
671 };
672 size_t offs;
673 u8 *newpos = pos;
674
675 if (!iwl_mvm_rrm_scan_needed(mvm)) {
676 memcpy(newpos, ies, len);
677 return newpos + len;
678 }
679
680 offs = ieee80211_ie_split(ies, len,
681 before_ds_params,
682 ARRAY_SIZE(before_ds_params),
683 0);
684
685 memcpy(newpos, ies, offs);
686 newpos += offs;
687
688 /* Add a placeholder for DS Parameter Set element */
689 *newpos++ = WLAN_EID_DS_PARAMS;
690 *newpos++ = 1;
691 *newpos++ = 0;
692
693 memcpy(newpos, ies + offs, len - offs);
694 newpos += len - offs;
695
696 return newpos;
697}
698
699#define WFA_TPC_IE_LEN 9
700
701static void iwl_mvm_add_tpc_report_ie(u8 *pos)
702{
703 pos[0] = WLAN_EID_VENDOR_SPECIFIC;
704 pos[1] = WFA_TPC_IE_LEN - 2;
705 pos[2] = (WLAN_OUI_MICROSOFT >> 16) & 0xff;
706 pos[3] = (WLAN_OUI_MICROSOFT >> 8) & 0xff;
707 pos[4] = WLAN_OUI_MICROSOFT & 0xff;
708 pos[5] = WLAN_OUI_TYPE_MICROSOFT_TPC;
709 pos[6] = 0;
710 /* pos[7] - tx power will be inserted by the FW */
711 pos[7] = 0;
712 pos[8] = 0;
713}
714
715static void
716iwl_mvm_build_scan_probe(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
717 struct ieee80211_scan_ies *ies,
718 struct iwl_mvm_scan_params *params)
719{
720 struct ieee80211_mgmt *frame = (void *)params->preq.buf;
721 u8 *pos, *newpos;
722 const u8 *mac_addr = params->flags & NL80211_SCAN_FLAG_RANDOM_ADDR ?
723 params->mac_addr : NULL;
724
725 /*
726 * Unfortunately, right now the offload scan doesn't support randomising
727 * within the firmware, so until the firmware API is ready we implement
728 * it in the driver. This means that the scan iterations won't really be
729 * random, only when it's restarted, but at least that helps a bit.
730 */
731 if (mac_addr)
732 get_random_mask_addr(frame->sa, mac_addr,
733 params->mac_addr_mask);
734 else
735 memcpy(frame->sa, vif->addr, ETH_ALEN);
736
737 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
738 eth_broadcast_addr(frame->da);
739 eth_broadcast_addr(frame->bssid);
740 frame->seq_ctrl = 0;
741
742 pos = frame->u.probe_req.variable;
743 *pos++ = WLAN_EID_SSID;
744 *pos++ = 0;
745
746 params->preq.mac_header.offset = 0;
747 params->preq.mac_header.len = cpu_to_le16(24 + 2);
748
749 /* Insert ds parameter set element on 2.4 GHz band */
750 newpos = iwl_mvm_copy_and_insert_ds_elem(mvm,
751 ies->ies[NL80211_BAND_2GHZ],
752 ies->len[NL80211_BAND_2GHZ],
753 pos);
754 params->preq.band_data[0].offset = cpu_to_le16(pos - params->preq.buf);
755 params->preq.band_data[0].len = cpu_to_le16(newpos - pos);
756 pos = newpos;
757
758 memcpy(pos, ies->ies[NL80211_BAND_5GHZ],
759 ies->len[NL80211_BAND_5GHZ]);
760 params->preq.band_data[1].offset = cpu_to_le16(pos - params->preq.buf);
761 params->preq.band_data[1].len =
762 cpu_to_le16(ies->len[NL80211_BAND_5GHZ]);
763 pos += ies->len[NL80211_BAND_5GHZ];
764
765 memcpy(pos, ies->common_ies, ies->common_ie_len);
766 params->preq.common_data.offset = cpu_to_le16(pos - params->preq.buf);
767
768 if (iwl_mvm_rrm_scan_needed(mvm) &&
769 !fw_has_capa(&mvm->fw->ucode_capa,
770 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) {
771 iwl_mvm_add_tpc_report_ie(pos + ies->common_ie_len);
772 params->preq.common_data.len = cpu_to_le16(ies->common_ie_len +
773 WFA_TPC_IE_LEN);
774 } else {
775 params->preq.common_data.len = cpu_to_le16(ies->common_ie_len);
776 }
777}
778
779static void iwl_mvm_scan_lmac_dwell(struct iwl_mvm *mvm,
780 struct iwl_scan_req_lmac *cmd,
781 struct iwl_mvm_scan_params *params)
782{
783 cmd->active_dwell = IWL_SCAN_DWELL_ACTIVE;
784 cmd->passive_dwell = IWL_SCAN_DWELL_PASSIVE;
785 cmd->fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED;
786 cmd->extended_dwell = IWL_SCAN_DWELL_EXTENDED;
787 cmd->max_out_time = cpu_to_le32(scan_timing[params->type].max_out_time);
788 cmd->suspend_time = cpu_to_le32(scan_timing[params->type].suspend_time);
789 cmd->scan_prio = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
790}
791
792static inline bool iwl_mvm_scan_fits(struct iwl_mvm *mvm, int n_ssids,
793 struct ieee80211_scan_ies *ies,
794 int n_channels)
795{
796 return ((n_ssids <= PROBE_OPTION_MAX) &&
797 (n_channels <= mvm->fw->ucode_capa.n_scan_channels) &
798 (ies->common_ie_len +
799 ies->len[NL80211_BAND_2GHZ] +
800 ies->len[NL80211_BAND_5GHZ] <=
801 iwl_mvm_max_scan_ie_fw_cmd_room(mvm)));
802}
803
804static inline bool iwl_mvm_scan_use_ebs(struct iwl_mvm *mvm,
805 struct ieee80211_vif *vif)
806{
807 const struct iwl_ucode_capabilities *capa = &mvm->fw->ucode_capa;
808
809 /* We can only use EBS if:
810 * 1. the feature is supported;
811 * 2. the last EBS was successful;
812 * 3. if only single scan, the single scan EBS API is supported;
813 * 4. it's not a p2p find operation.
814 */
815 return ((capa->flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT) &&
816 mvm->last_ebs_successful && IWL_MVM_ENABLE_EBS &&
817 vif->type != NL80211_IFTYPE_P2P_DEVICE);
818}
819
820static inline bool iwl_mvm_is_regular_scan(struct iwl_mvm_scan_params *params)
821{
822 return params->n_scan_plans == 1 &&
823 params->scan_plans[0].iterations == 1;
824}
825
826static int iwl_mvm_scan_lmac_flags(struct iwl_mvm *mvm,
827 struct iwl_mvm_scan_params *params,
828 struct ieee80211_vif *vif)
829{
830 int flags = 0;
831
832 if (params->n_ssids == 0)
833 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE;
834
835 if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0)
836 flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION;
837
838 if (params->type == IWL_SCAN_TYPE_FRAGMENTED)
839 flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED;
840
841 if (iwl_mvm_rrm_scan_needed(mvm) &&
842 fw_has_capa(&mvm->fw->ucode_capa,
843 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
844 flags |= IWL_MVM_LMAC_SCAN_FLAGS_RRM_ENABLED;
845
846 if (params->pass_all)
847 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL;
848 else
849 flags |= IWL_MVM_LMAC_SCAN_FLAG_MATCH;
850
851#ifdef CONFIG_IWLWIFI_DEBUGFS
852 if (mvm->scan_iter_notif_enabled)
853 flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE;
854#endif
855
856 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED)
857 flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE;
858
859 if (iwl_mvm_is_regular_scan(params) &&
860 vif->type != NL80211_IFTYPE_P2P_DEVICE &&
861 params->type != IWL_SCAN_TYPE_FRAGMENTED)
862 flags |= IWL_MVM_LMAC_SCAN_FLAG_EXTENDED_DWELL;
863
864 return flags;
865}
866
867static int iwl_mvm_scan_lmac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
868 struct iwl_mvm_scan_params *params)
869{
870 struct iwl_scan_req_lmac *cmd = mvm->scan_cmd;
871 struct iwl_scan_probe_req *preq =
872 (void *)(cmd->data + sizeof(struct iwl_scan_channel_cfg_lmac) *
873 mvm->fw->ucode_capa.n_scan_channels);
874 u32 ssid_bitmap = 0;
875 int i;
876
877 lockdep_assert_held(&mvm->mutex);
878
879 memset(cmd, 0, ksize(cmd));
880
881 if (WARN_ON(params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS))
882 return -EINVAL;
883
884 iwl_mvm_scan_lmac_dwell(mvm, cmd, params);
885
886 cmd->rx_chain_select = iwl_mvm_scan_rx_chain(mvm);
887 cmd->iter_num = cpu_to_le32(1);
888 cmd->n_channels = (u8)params->n_channels;
889
890 cmd->delay = cpu_to_le32(params->delay);
891
892 cmd->scan_flags = cpu_to_le32(iwl_mvm_scan_lmac_flags(mvm, params,
893 vif));
894
895 cmd->flags = iwl_mvm_scan_rxon_flags(params->channels[0]->band);
896 cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP |
897 MAC_FILTER_IN_BEACON);
898 iwl_mvm_scan_fill_tx_cmd(mvm, cmd->tx_cmd, params->no_cck);
899 iwl_scan_build_ssids(params, cmd->direct_scan, &ssid_bitmap);
900
901 /* this API uses bits 1-20 instead of 0-19 */
902 ssid_bitmap <<= 1;
903
904 for (i = 0; i < params->n_scan_plans; i++) {
905 struct cfg80211_sched_scan_plan *scan_plan =
906 ¶ms->scan_plans[i];
907
908 cmd->schedule[i].delay =
909 cpu_to_le16(scan_plan->interval);
910 cmd->schedule[i].iterations = scan_plan->iterations;
911 cmd->schedule[i].full_scan_mul = 1;
912 }
913
914 /*
915 * If the number of iterations of the last scan plan is set to
916 * zero, it should run infinitely. However, this is not always the case.
917 * For example, when regular scan is requested the driver sets one scan
918 * plan with one iteration.
919 */
920 if (!cmd->schedule[i - 1].iterations)
921 cmd->schedule[i - 1].iterations = 0xff;
922
923 if (iwl_mvm_scan_use_ebs(mvm, vif)) {
924 cmd->channel_opt[0].flags =
925 cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS |
926 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
927 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD);
928 cmd->channel_opt[0].non_ebs_ratio =
929 cpu_to_le16(IWL_DENSE_EBS_SCAN_RATIO);
930 cmd->channel_opt[1].flags =
931 cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS |
932 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
933 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD);
934 cmd->channel_opt[1].non_ebs_ratio =
935 cpu_to_le16(IWL_SPARSE_EBS_SCAN_RATIO);
936 }
937
938 iwl_mvm_lmac_scan_cfg_channels(mvm, params->channels,
939 params->n_channels, ssid_bitmap, cmd);
940
941 *preq = params->preq;
942
943 return 0;
944}
945
946static int rate_to_scan_rate_flag(unsigned int rate)
947{
948 static const int rate_to_scan_rate[IWL_RATE_COUNT] = {
949 [IWL_RATE_1M_INDEX] = SCAN_CONFIG_RATE_1M,
950 [IWL_RATE_2M_INDEX] = SCAN_CONFIG_RATE_2M,
951 [IWL_RATE_5M_INDEX] = SCAN_CONFIG_RATE_5M,
952 [IWL_RATE_11M_INDEX] = SCAN_CONFIG_RATE_11M,
953 [IWL_RATE_6M_INDEX] = SCAN_CONFIG_RATE_6M,
954 [IWL_RATE_9M_INDEX] = SCAN_CONFIG_RATE_9M,
955 [IWL_RATE_12M_INDEX] = SCAN_CONFIG_RATE_12M,
956 [IWL_RATE_18M_INDEX] = SCAN_CONFIG_RATE_18M,
957 [IWL_RATE_24M_INDEX] = SCAN_CONFIG_RATE_24M,
958 [IWL_RATE_36M_INDEX] = SCAN_CONFIG_RATE_36M,
959 [IWL_RATE_48M_INDEX] = SCAN_CONFIG_RATE_48M,
960 [IWL_RATE_54M_INDEX] = SCAN_CONFIG_RATE_54M,
961 };
962
963 return rate_to_scan_rate[rate];
964}
965
966static __le32 iwl_mvm_scan_config_rates(struct iwl_mvm *mvm)
967{
968 struct ieee80211_supported_band *band;
969 unsigned int rates = 0;
970 int i;
971
972 band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ];
973 for (i = 0; i < band->n_bitrates; i++)
974 rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value);
975 band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ];
976 for (i = 0; i < band->n_bitrates; i++)
977 rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value);
978
979 /* Set both basic rates and supported rates */
980 rates |= SCAN_CONFIG_SUPPORTED_RATE(rates);
981
982 return cpu_to_le32(rates);
983}
984
985static void iwl_mvm_fill_scan_dwell(struct iwl_mvm *mvm,
986 struct iwl_scan_dwell *dwell)
987{
988 dwell->active = IWL_SCAN_DWELL_ACTIVE;
989 dwell->passive = IWL_SCAN_DWELL_PASSIVE;
990 dwell->fragmented = IWL_SCAN_DWELL_FRAGMENTED;
991 dwell->extended = IWL_SCAN_DWELL_EXTENDED;
992}
993
994static void iwl_mvm_fill_channels(struct iwl_mvm *mvm, u8 *channels)
995{
996 struct ieee80211_supported_band *band;
997 int i, j = 0;
998
999 band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ];
1000 for (i = 0; i < band->n_channels; i++, j++)
1001 channels[j] = band->channels[i].hw_value;
1002 band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ];
1003 for (i = 0; i < band->n_channels; i++, j++)
1004 channels[j] = band->channels[i].hw_value;
1005}
1006
1007static void iwl_mvm_fill_scan_config_v1(struct iwl_mvm *mvm, void *config,
1008 u32 flags, u8 channel_flags)
1009{
1010 enum iwl_mvm_scan_type type = iwl_mvm_get_scan_type(mvm, false);
1011 struct iwl_scan_config_v1 *cfg = config;
1012
1013 cfg->flags = cpu_to_le32(flags);
1014 cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm));
1015 cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm));
1016 cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm);
1017 cfg->out_of_channel_time = cpu_to_le32(scan_timing[type].max_out_time);
1018 cfg->suspend_time = cpu_to_le32(scan_timing[type].suspend_time);
1019
1020 iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell);
1021
1022 memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN);
1023
1024 cfg->bcast_sta_id = mvm->aux_sta.sta_id;
1025 cfg->channel_flags = channel_flags;
1026
1027 iwl_mvm_fill_channels(mvm, cfg->channel_array);
1028}
1029
1030static void iwl_mvm_fill_scan_config(struct iwl_mvm *mvm, void *config,
1031 u32 flags, u8 channel_flags)
1032{
1033 enum iwl_mvm_scan_type type = iwl_mvm_get_scan_type(mvm, false);
1034 struct iwl_scan_config *cfg = config;
1035
1036 cfg->flags = cpu_to_le32(flags);
1037 cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm));
1038 cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm));
1039 cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm);
1040 cfg->out_of_channel_time[0] =
1041 cpu_to_le32(scan_timing[type].max_out_time);
1042 cfg->suspend_time[0] = cpu_to_le32(scan_timing[type].suspend_time);
1043
1044 if (iwl_mvm_is_cdb_supported(mvm)) {
1045 cfg->suspend_time[1] =
1046 cpu_to_le32(scan_timing[type].suspend_time);
1047 cfg->out_of_channel_time[1] =
1048 cpu_to_le32(scan_timing[type].max_out_time);
1049 }
1050
1051 iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell);
1052
1053 memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN);
1054
1055 cfg->bcast_sta_id = mvm->aux_sta.sta_id;
1056 cfg->channel_flags = channel_flags;
1057
1058 iwl_mvm_fill_channels(mvm, cfg->channel_array);
1059}
1060
1061int iwl_mvm_config_scan(struct iwl_mvm *mvm)
1062{
1063 void *cfg;
1064 int ret, cmd_size;
1065 struct iwl_host_cmd cmd = {
1066 .id = iwl_cmd_id(SCAN_CFG_CMD, IWL_ALWAYS_LONG_GROUP, 0),
1067 };
1068 enum iwl_mvm_scan_type type = iwl_mvm_get_scan_type(mvm, false);
1069 int num_channels =
1070 mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels +
1071 mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels;
1072 u32 flags;
1073 u8 channel_flags;
1074
1075 if (WARN_ON(num_channels > mvm->fw->ucode_capa.n_scan_channels))
1076 return -ENOBUFS;
1077
1078 if (type == mvm->scan_type)
1079 return 0;
1080
1081 if (iwl_mvm_has_new_tx_api(mvm))
1082 cmd_size = sizeof(struct iwl_scan_config);
1083 else
1084 cmd_size = sizeof(struct iwl_scan_config_v1);
1085 cmd_size += mvm->fw->ucode_capa.n_scan_channels;
1086
1087 cfg = kzalloc(cmd_size, GFP_KERNEL);
1088 if (!cfg)
1089 return -ENOMEM;
1090
1091 flags = SCAN_CONFIG_FLAG_ACTIVATE |
1092 SCAN_CONFIG_FLAG_ALLOW_CHUB_REQS |
1093 SCAN_CONFIG_FLAG_SET_TX_CHAINS |
1094 SCAN_CONFIG_FLAG_SET_RX_CHAINS |
1095 SCAN_CONFIG_FLAG_SET_AUX_STA_ID |
1096 SCAN_CONFIG_FLAG_SET_ALL_TIMES |
1097 SCAN_CONFIG_FLAG_SET_LEGACY_RATES |
1098 SCAN_CONFIG_FLAG_SET_MAC_ADDR |
1099 SCAN_CONFIG_FLAG_SET_CHANNEL_FLAGS |
1100 SCAN_CONFIG_N_CHANNELS(num_channels) |
1101 (type == IWL_SCAN_TYPE_FRAGMENTED ?
1102 SCAN_CONFIG_FLAG_SET_FRAGMENTED :
1103 SCAN_CONFIG_FLAG_CLEAR_FRAGMENTED);
1104
1105 channel_flags = IWL_CHANNEL_FLAG_EBS |
1106 IWL_CHANNEL_FLAG_ACCURATE_EBS |
1107 IWL_CHANNEL_FLAG_EBS_ADD |
1108 IWL_CHANNEL_FLAG_PRE_SCAN_PASSIVE2ACTIVE;
1109
1110 if (iwl_mvm_has_new_tx_api(mvm)) {
1111 flags |= (type == IWL_SCAN_TYPE_FRAGMENTED) ?
1112 SCAN_CONFIG_FLAG_SET_LMAC2_FRAGMENTED :
1113 SCAN_CONFIG_FLAG_CLEAR_LMAC2_FRAGMENTED;
1114 iwl_mvm_fill_scan_config(mvm, cfg, flags, channel_flags);
1115 } else {
1116 iwl_mvm_fill_scan_config_v1(mvm, cfg, flags, channel_flags);
1117 }
1118
1119 cmd.data[0] = cfg;
1120 cmd.len[0] = cmd_size;
1121 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
1122
1123 IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n");
1124
1125 ret = iwl_mvm_send_cmd(mvm, &cmd);
1126 if (!ret)
1127 mvm->scan_type = type;
1128
1129 kfree(cfg);
1130 return ret;
1131}
1132
1133static int iwl_mvm_scan_uid_by_status(struct iwl_mvm *mvm, int status)
1134{
1135 int i;
1136
1137 for (i = 0; i < mvm->max_scans; i++)
1138 if (mvm->scan_uid_status[i] == status)
1139 return i;
1140
1141 return -ENOENT;
1142}
1143
1144static void iwl_mvm_scan_umac_dwell(struct iwl_mvm *mvm,
1145 struct iwl_scan_req_umac *cmd,
1146 struct iwl_mvm_scan_params *params)
1147{
1148 struct iwl_mvm_scan_timing_params *timing, *hb_timing;
1149 u8 active_dwell, passive_dwell;
1150
1151 timing = &scan_timing[params->type];
1152 active_dwell = params->measurement_dwell ?
1153 params->measurement_dwell : IWL_SCAN_DWELL_ACTIVE;
1154 passive_dwell = params->measurement_dwell ?
1155 params->measurement_dwell : IWL_SCAN_DWELL_PASSIVE;
1156
1157 if (iwl_mvm_is_adaptive_dwell_supported(mvm)) {
1158 cmd->v7.adwell_default_n_aps_social =
1159 IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL;
1160 cmd->v7.adwell_default_n_aps =
1161 IWL_SCAN_ADWELL_DEFAULT_N_APS;
1162
1163 /* if custom max budget was configured with debugfs */
1164 if (IWL_MVM_ADWELL_MAX_BUDGET)
1165 cmd->v7.adwell_max_budget =
1166 cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET);
1167 else if (params->ssids && params->ssids[0].ssid_len)
1168 cmd->v7.adwell_max_budget =
1169 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN);
1170 else
1171 cmd->v7.adwell_max_budget =
1172 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN);
1173
1174 cmd->v7.scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1175 cmd->v7.max_out_time[SCAN_LB_LMAC_IDX] =
1176 cpu_to_le32(timing->max_out_time);
1177 cmd->v7.suspend_time[SCAN_LB_LMAC_IDX] =
1178 cpu_to_le32(timing->suspend_time);
1179
1180 if (iwl_mvm_is_cdb_supported(mvm)) {
1181 hb_timing = &scan_timing[params->type];
1182
1183 cmd->v7.max_out_time[SCAN_HB_LMAC_IDX] =
1184 cpu_to_le32(hb_timing->max_out_time);
1185 cmd->v7.suspend_time[SCAN_HB_LMAC_IDX] =
1186 cpu_to_le32(hb_timing->suspend_time);
1187 }
1188
1189 if (!iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) {
1190 cmd->v7.active_dwell = active_dwell;
1191 cmd->v7.passive_dwell = passive_dwell;
1192 cmd->v7.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED;
1193 } else {
1194 cmd->v8.active_dwell[SCAN_LB_LMAC_IDX] = active_dwell;
1195 cmd->v8.passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell;
1196 if (iwl_mvm_is_cdb_supported(mvm)) {
1197 cmd->v8.active_dwell[SCAN_HB_LMAC_IDX] =
1198 active_dwell;
1199 cmd->v8.passive_dwell[SCAN_HB_LMAC_IDX] =
1200 passive_dwell;
1201 }
1202 }
1203 } else {
1204 cmd->v1.extended_dwell = params->measurement_dwell ?
1205 params->measurement_dwell : IWL_SCAN_DWELL_EXTENDED;
1206 cmd->v1.active_dwell = active_dwell;
1207 cmd->v1.passive_dwell = passive_dwell;
1208 cmd->v1.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED;
1209
1210 if (iwl_mvm_is_cdb_supported(mvm)) {
1211 hb_timing = &scan_timing[params->type];
1212
1213 cmd->v6.max_out_time[SCAN_HB_LMAC_IDX] =
1214 cpu_to_le32(hb_timing->max_out_time);
1215 cmd->v6.suspend_time[SCAN_HB_LMAC_IDX] =
1216 cpu_to_le32(hb_timing->suspend_time);
1217 }
1218
1219 if (iwl_mvm_has_new_tx_api(mvm)) {
1220 cmd->v6.scan_priority =
1221 cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1222 cmd->v6.max_out_time[SCAN_LB_LMAC_IDX] =
1223 cpu_to_le32(timing->max_out_time);
1224 cmd->v6.suspend_time[SCAN_LB_LMAC_IDX] =
1225 cpu_to_le32(timing->suspend_time);
1226 } else {
1227 cmd->v1.scan_priority =
1228 cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1229 cmd->v1.max_out_time =
1230 cpu_to_le32(timing->max_out_time);
1231 cmd->v1.suspend_time =
1232 cpu_to_le32(timing->suspend_time);
1233 }
1234 }
1235}
1236
1237static void
1238iwl_mvm_umac_scan_cfg_channels(struct iwl_mvm *mvm,
1239 struct ieee80211_channel **channels,
1240 int n_channels, u32 ssid_bitmap,
1241 struct iwl_scan_channel_cfg_umac *channel_cfg)
1242{
1243 int i;
1244
1245 for (i = 0; i < n_channels; i++) {
1246 channel_cfg[i].flags = cpu_to_le32(ssid_bitmap);
1247 channel_cfg[i].channel_num = channels[i]->hw_value;
1248 channel_cfg[i].iter_count = 1;
1249 channel_cfg[i].iter_interval = 0;
1250 }
1251}
1252
1253static u16 iwl_mvm_scan_umac_flags(struct iwl_mvm *mvm,
1254 struct iwl_mvm_scan_params *params,
1255 struct ieee80211_vif *vif)
1256{
1257 u16 flags = 0;
1258
1259 if (params->n_ssids == 0)
1260 flags = IWL_UMAC_SCAN_GEN_FLAGS_PASSIVE;
1261
1262 if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0)
1263 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PRE_CONNECT;
1264
1265 if (params->type == IWL_SCAN_TYPE_FRAGMENTED) {
1266 flags |= IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED;
1267 if (iwl_mvm_is_cdb_supported(mvm))
1268 flags |= IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED;
1269 }
1270
1271 if (iwl_mvm_rrm_scan_needed(mvm) &&
1272 fw_has_capa(&mvm->fw->ucode_capa,
1273 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
1274 flags |= IWL_UMAC_SCAN_GEN_FLAGS_RRM_ENABLED;
1275
1276 if (params->pass_all)
1277 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PASS_ALL;
1278 else
1279 flags |= IWL_UMAC_SCAN_GEN_FLAGS_MATCH;
1280
1281 if (!iwl_mvm_is_regular_scan(params))
1282 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PERIODIC;
1283
1284 if (params->measurement_dwell)
1285 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE;
1286
1287#ifdef CONFIG_IWLWIFI_DEBUGFS
1288 if (mvm->scan_iter_notif_enabled)
1289 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE;
1290#endif
1291
1292 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED)
1293 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE;
1294
1295 if (iwl_mvm_is_adaptive_dwell_supported(mvm) && IWL_MVM_ADWELL_ENABLE &&
1296 vif->type != NL80211_IFTYPE_P2P_DEVICE)
1297 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ADAPTIVE_DWELL;
1298
1299 /*
1300 * Extended dwell is relevant only for low band to start with, as it is
1301 * being used for social channles only (1, 6, 11), so we can check
1302 * only scan type on low band also for CDB.
1303 */
1304 if (iwl_mvm_is_regular_scan(params) &&
1305 vif->type != NL80211_IFTYPE_P2P_DEVICE &&
1306 params->type != IWL_SCAN_TYPE_FRAGMENTED &&
1307 !iwl_mvm_is_adaptive_dwell_supported(mvm) &&
1308 !iwl_mvm_is_oce_supported(mvm))
1309 flags |= IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL;
1310
1311 if (iwl_mvm_is_oce_supported(mvm)) {
1312 if ((params->flags &
1313 NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE))
1314 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_HIGH_TX_RATE;
1315 /* Since IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL and
1316 * NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION shares
1317 * the same bit, we need to make sure that we use this bit here
1318 * only when IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL cannot be
1319 * used. */
1320 if ((params->flags &
1321 NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) &&
1322 !WARN_ON_ONCE(!iwl_mvm_is_adaptive_dwell_supported(mvm)))
1323 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_DEFER_SUPP;
1324 if ((params->flags & NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME))
1325 flags |= IWL_UMAC_SCAN_GEN_FLAGS_MAX_CHNL_TIME;
1326 }
1327
1328 return flags;
1329}
1330
1331static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1332 struct iwl_mvm_scan_params *params,
1333 int type)
1334{
1335 struct iwl_scan_req_umac *cmd = mvm->scan_cmd;
1336 struct iwl_scan_umac_chan_param *chan_param;
1337 void *cmd_data = iwl_mvm_get_scan_req_umac_data(mvm);
1338 struct iwl_scan_req_umac_tail *sec_part = cmd_data +
1339 sizeof(struct iwl_scan_channel_cfg_umac) *
1340 mvm->fw->ucode_capa.n_scan_channels;
1341 int uid, i;
1342 u32 ssid_bitmap = 0;
1343 u8 channel_flags = 0;
1344 u16 gen_flags;
1345 struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif);
1346
1347 chan_param = iwl_mvm_get_scan_req_umac_channel(mvm);
1348
1349 lockdep_assert_held(&mvm->mutex);
1350
1351 if (WARN_ON(params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS))
1352 return -EINVAL;
1353
1354 uid = iwl_mvm_scan_uid_by_status(mvm, 0);
1355 if (uid < 0)
1356 return uid;
1357
1358 memset(cmd, 0, ksize(cmd));
1359
1360 iwl_mvm_scan_umac_dwell(mvm, cmd, params);
1361
1362 mvm->scan_uid_status[uid] = type;
1363
1364 cmd->uid = cpu_to_le32(uid);
1365 gen_flags = iwl_mvm_scan_umac_flags(mvm, params, vif);
1366 cmd->general_flags = cpu_to_le16(gen_flags);
1367 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) {
1368 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED)
1369 cmd->v8.num_of_fragments[SCAN_LB_LMAC_IDX] =
1370 IWL_SCAN_NUM_OF_FRAGS;
1371 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED)
1372 cmd->v8.num_of_fragments[SCAN_HB_LMAC_IDX] =
1373 IWL_SCAN_NUM_OF_FRAGS;
1374 }
1375
1376 cmd->scan_start_mac_id = scan_vif->id;
1377
1378 if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT)
1379 cmd->flags = cpu_to_le32(IWL_UMAC_SCAN_FLAG_PREEMPTIVE);
1380
1381 if (iwl_mvm_scan_use_ebs(mvm, vif))
1382 channel_flags = IWL_SCAN_CHANNEL_FLAG_EBS |
1383 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
1384 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD;
1385
1386 chan_param->flags = channel_flags;
1387 chan_param->count = params->n_channels;
1388
1389 iwl_scan_build_ssids(params, sec_part->direct_scan, &ssid_bitmap);
1390
1391 iwl_mvm_umac_scan_cfg_channels(mvm, params->channels,
1392 params->n_channels, ssid_bitmap,
1393 cmd_data);
1394
1395 for (i = 0; i < params->n_scan_plans; i++) {
1396 struct cfg80211_sched_scan_plan *scan_plan =
1397 ¶ms->scan_plans[i];
1398
1399 sec_part->schedule[i].iter_count = scan_plan->iterations;
1400 sec_part->schedule[i].interval =
1401 cpu_to_le16(scan_plan->interval);
1402 }
1403
1404 /*
1405 * If the number of iterations of the last scan plan is set to
1406 * zero, it should run infinitely. However, this is not always the case.
1407 * For example, when regular scan is requested the driver sets one scan
1408 * plan with one iteration.
1409 */
1410 if (!sec_part->schedule[i - 1].iter_count)
1411 sec_part->schedule[i - 1].iter_count = 0xff;
1412
1413 sec_part->delay = cpu_to_le16(params->delay);
1414 sec_part->preq = params->preq;
1415
1416 return 0;
1417}
1418
1419static int iwl_mvm_num_scans(struct iwl_mvm *mvm)
1420{
1421 return hweight32(mvm->scan_status & IWL_MVM_SCAN_MASK);
1422}
1423
1424static int iwl_mvm_check_running_scans(struct iwl_mvm *mvm, int type)
1425{
1426 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
1427 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
1428
1429 /* This looks a bit arbitrary, but the idea is that if we run
1430 * out of possible simultaneous scans and the userspace is
1431 * trying to run a scan type that is already running, we
1432 * return -EBUSY. But if the userspace wants to start a
1433 * different type of scan, we stop the opposite type to make
1434 * space for the new request. The reason is backwards
1435 * compatibility with old wpa_supplicant that wouldn't stop a
1436 * scheduled scan before starting a normal scan.
1437 */
1438
1439 if (iwl_mvm_num_scans(mvm) < mvm->max_scans)
1440 return 0;
1441
1442 /* Use a switch, even though this is a bitmask, so that more
1443 * than one bits set will fall in default and we will warn.
1444 */
1445 switch (type) {
1446 case IWL_MVM_SCAN_REGULAR:
1447 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK)
1448 return -EBUSY;
1449 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
1450 case IWL_MVM_SCAN_SCHED:
1451 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK)
1452 return -EBUSY;
1453 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
1454 case IWL_MVM_SCAN_NETDETECT:
1455 /* For non-unified images, there's no need to stop
1456 * anything for net-detect since the firmware is
1457 * restarted anyway. This way, any sched scans that
1458 * were running will be restarted when we resume.
1459 */
1460 if (!unified_image)
1461 return 0;
1462
1463 /* If this is a unified image and we ran out of scans,
1464 * we need to stop something. Prefer stopping regular
1465 * scans, because the results are useless at this
1466 * point, and we should be able to keep running
1467 * another scheduled scan while suspended.
1468 */
1469 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK)
1470 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR,
1471 true);
1472 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK)
1473 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED,
1474 true);
1475
1476 /* fall through, something is wrong if no scan was
1477 * running but we ran out of scans.
1478 */
1479 default:
1480 WARN_ON(1);
1481 break;
1482 }
1483
1484 return -EIO;
1485}
1486
1487#define SCAN_TIMEOUT 20000
1488
1489void iwl_mvm_scan_timeout_wk(struct work_struct *work)
1490{
1491 struct delayed_work *delayed_work = to_delayed_work(work);
1492 struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm,
1493 scan_timeout_dwork);
1494
1495 IWL_ERR(mvm, "regular scan timed out\n");
1496
1497 iwl_force_nmi(mvm->trans);
1498}
1499
1500int iwl_mvm_reg_scan_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1501 struct cfg80211_scan_request *req,
1502 struct ieee80211_scan_ies *ies)
1503{
1504 struct iwl_host_cmd hcmd = {
1505 .len = { iwl_mvm_scan_size(mvm), },
1506 .data = { mvm->scan_cmd, },
1507 .dataflags = { IWL_HCMD_DFL_NOCOPY, },
1508 };
1509 struct iwl_mvm_scan_params params = {};
1510 int ret;
1511 struct cfg80211_sched_scan_plan scan_plan = { .iterations = 1 };
1512
1513 lockdep_assert_held(&mvm->mutex);
1514
1515 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) {
1516 IWL_ERR(mvm, "scan while LAR regdomain is not set\n");
1517 return -EBUSY;
1518 }
1519
1520 ret = iwl_mvm_check_running_scans(mvm, IWL_MVM_SCAN_REGULAR);
1521 if (ret)
1522 return ret;
1523
1524 /* we should have failed registration if scan_cmd was NULL */
1525 if (WARN_ON(!mvm->scan_cmd))
1526 return -ENOMEM;
1527
1528 if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels))
1529 return -ENOBUFS;
1530
1531 params.n_ssids = req->n_ssids;
1532 params.flags = req->flags;
1533 params.n_channels = req->n_channels;
1534 params.delay = 0;
1535 params.ssids = req->ssids;
1536 params.channels = req->channels;
1537 params.mac_addr = req->mac_addr;
1538 params.mac_addr_mask = req->mac_addr_mask;
1539 params.no_cck = req->no_cck;
1540 params.pass_all = true;
1541 params.n_match_sets = 0;
1542 params.match_sets = NULL;
1543
1544 params.scan_plans = &scan_plan;
1545 params.n_scan_plans = 1;
1546
1547 params.type =
1548 iwl_mvm_get_scan_type(mvm,
1549 vif->type == NL80211_IFTYPE_P2P_DEVICE);
1550
1551 ret = iwl_mvm_get_measurement_dwell(mvm, req, ¶ms);
1552 if (ret < 0)
1553 return ret;
1554
1555 params.measurement_dwell = ret;
1556
1557 iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms);
1558
1559 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1560 hcmd.id = iwl_cmd_id(SCAN_REQ_UMAC, IWL_ALWAYS_LONG_GROUP, 0);
1561 ret = iwl_mvm_scan_umac(mvm, vif, ¶ms,
1562 IWL_MVM_SCAN_REGULAR);
1563 } else {
1564 hcmd.id = SCAN_OFFLOAD_REQUEST_CMD;
1565 ret = iwl_mvm_scan_lmac(mvm, vif, ¶ms);
1566 }
1567
1568 if (ret)
1569 return ret;
1570
1571 ret = iwl_mvm_send_cmd(mvm, &hcmd);
1572 if (ret) {
1573 /* If the scan failed, it usually means that the FW was unable
1574 * to allocate the time events. Warn on it, but maybe we
1575 * should try to send the command again with different params.
1576 */
1577 IWL_ERR(mvm, "Scan failed! ret %d\n", ret);
1578 return ret;
1579 }
1580
1581 IWL_DEBUG_SCAN(mvm, "Scan request was sent successfully\n");
1582 mvm->scan_status |= IWL_MVM_SCAN_REGULAR;
1583 mvm->scan_vif = iwl_mvm_vif_from_mac80211(vif);
1584 iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN);
1585
1586 schedule_delayed_work(&mvm->scan_timeout_dwork,
1587 msecs_to_jiffies(SCAN_TIMEOUT));
1588
1589 return 0;
1590}
1591
1592int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm,
1593 struct ieee80211_vif *vif,
1594 struct cfg80211_sched_scan_request *req,
1595 struct ieee80211_scan_ies *ies,
1596 int type)
1597{
1598 struct iwl_host_cmd hcmd = {
1599 .len = { iwl_mvm_scan_size(mvm), },
1600 .data = { mvm->scan_cmd, },
1601 .dataflags = { IWL_HCMD_DFL_NOCOPY, },
1602 };
1603 struct iwl_mvm_scan_params params = {};
1604 int ret;
1605
1606 lockdep_assert_held(&mvm->mutex);
1607
1608 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) {
1609 IWL_ERR(mvm, "sched-scan while LAR regdomain is not set\n");
1610 return -EBUSY;
1611 }
1612
1613 ret = iwl_mvm_check_running_scans(mvm, type);
1614 if (ret)
1615 return ret;
1616
1617 /* we should have failed registration if scan_cmd was NULL */
1618 if (WARN_ON(!mvm->scan_cmd))
1619 return -ENOMEM;
1620
1621 if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels))
1622 return -ENOBUFS;
1623
1624 params.n_ssids = req->n_ssids;
1625 params.flags = req->flags;
1626 params.n_channels = req->n_channels;
1627 params.ssids = req->ssids;
1628 params.channels = req->channels;
1629 params.mac_addr = req->mac_addr;
1630 params.mac_addr_mask = req->mac_addr_mask;
1631 params.no_cck = false;
1632 params.pass_all = iwl_mvm_scan_pass_all(mvm, req);
1633 params.n_match_sets = req->n_match_sets;
1634 params.match_sets = req->match_sets;
1635 if (!req->n_scan_plans)
1636 return -EINVAL;
1637
1638 params.n_scan_plans = req->n_scan_plans;
1639 params.scan_plans = req->scan_plans;
1640
1641 params.type =
1642 iwl_mvm_get_scan_type(mvm,
1643 vif->type == NL80211_IFTYPE_P2P_DEVICE);
1644
1645 /* In theory, LMAC scans can handle a 32-bit delay, but since
1646 * waiting for over 18 hours to start the scan is a bit silly
1647 * and to keep it aligned with UMAC scans (which only support
1648 * 16-bit delays), trim it down to 16-bits.
1649 */
1650 if (req->delay > U16_MAX) {
1651 IWL_DEBUG_SCAN(mvm,
1652 "delay value is > 16-bits, set to max possible\n");
1653 params.delay = U16_MAX;
1654 } else {
1655 params.delay = req->delay;
1656 }
1657
1658 ret = iwl_mvm_config_sched_scan_profiles(mvm, req);
1659 if (ret)
1660 return ret;
1661
1662 iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms);
1663
1664 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1665 hcmd.id = iwl_cmd_id(SCAN_REQ_UMAC, IWL_ALWAYS_LONG_GROUP, 0);
1666 ret = iwl_mvm_scan_umac(mvm, vif, ¶ms, type);
1667 } else {
1668 hcmd.id = SCAN_OFFLOAD_REQUEST_CMD;
1669 ret = iwl_mvm_scan_lmac(mvm, vif, ¶ms);
1670 }
1671
1672 if (ret)
1673 return ret;
1674
1675 ret = iwl_mvm_send_cmd(mvm, &hcmd);
1676 if (!ret) {
1677 IWL_DEBUG_SCAN(mvm,
1678 "Sched scan request was sent successfully\n");
1679 mvm->scan_status |= type;
1680 } else {
1681 /* If the scan failed, it usually means that the FW was unable
1682 * to allocate the time events. Warn on it, but maybe we
1683 * should try to send the command again with different params.
1684 */
1685 IWL_ERR(mvm, "Sched scan failed! ret %d\n", ret);
1686 }
1687
1688 return ret;
1689}
1690
1691void iwl_mvm_rx_umac_scan_complete_notif(struct iwl_mvm *mvm,
1692 struct iwl_rx_cmd_buffer *rxb)
1693{
1694 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1695 struct iwl_umac_scan_complete *notif = (void *)pkt->data;
1696 u32 uid = __le32_to_cpu(notif->uid);
1697 bool aborted = (notif->status == IWL_SCAN_OFFLOAD_ABORTED);
1698
1699 if (WARN_ON(!(mvm->scan_uid_status[uid] & mvm->scan_status)))
1700 return;
1701
1702 /* if the scan is already stopping, we don't need to notify mac80211 */
1703 if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_REGULAR) {
1704 struct cfg80211_scan_info info = {
1705 .aborted = aborted,
1706 .scan_start_tsf = mvm->scan_start,
1707 };
1708
1709 memcpy(info.tsf_bssid, mvm->scan_vif->bssid, ETH_ALEN);
1710 ieee80211_scan_completed(mvm->hw, &info);
1711 mvm->scan_vif = NULL;
1712 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
1713 cancel_delayed_work(&mvm->scan_timeout_dwork);
1714 } else if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_SCHED) {
1715 ieee80211_sched_scan_stopped(mvm->hw);
1716 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
1717 }
1718
1719 mvm->scan_status &= ~mvm->scan_uid_status[uid];
1720 IWL_DEBUG_SCAN(mvm,
1721 "Scan completed, uid %u type %u, status %s, EBS status %s\n",
1722 uid, mvm->scan_uid_status[uid],
1723 notif->status == IWL_SCAN_OFFLOAD_COMPLETED ?
1724 "completed" : "aborted",
1725 iwl_mvm_ebs_status_str(notif->ebs_status));
1726 IWL_DEBUG_SCAN(mvm,
1727 "Last line %d, Last iteration %d, Time from last iteration %d\n",
1728 notif->last_schedule, notif->last_iter,
1729 __le32_to_cpu(notif->time_from_last_iter));
1730
1731 if (notif->ebs_status != IWL_SCAN_EBS_SUCCESS &&
1732 notif->ebs_status != IWL_SCAN_EBS_INACTIVE)
1733 mvm->last_ebs_successful = false;
1734
1735 mvm->scan_uid_status[uid] = 0;
1736}
1737
1738void iwl_mvm_rx_umac_scan_iter_complete_notif(struct iwl_mvm *mvm,
1739 struct iwl_rx_cmd_buffer *rxb)
1740{
1741 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1742 struct iwl_umac_scan_iter_complete_notif *notif = (void *)pkt->data;
1743
1744 mvm->scan_start = le64_to_cpu(notif->start_tsf);
1745
1746 IWL_DEBUG_SCAN(mvm,
1747 "UMAC Scan iteration complete: status=0x%x scanned_channels=%d\n",
1748 notif->status, notif->scanned_channels);
1749
1750 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) {
1751 IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n");
1752 ieee80211_sched_scan_results(mvm->hw);
1753 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED;
1754 }
1755
1756 IWL_DEBUG_SCAN(mvm,
1757 "UMAC Scan iteration complete: scan started at %llu (TSF)\n",
1758 mvm->scan_start);
1759}
1760
1761static int iwl_mvm_umac_scan_abort(struct iwl_mvm *mvm, int type)
1762{
1763 struct iwl_umac_scan_abort cmd = {};
1764 int uid, ret;
1765
1766 lockdep_assert_held(&mvm->mutex);
1767
1768 /* We should always get a valid index here, because we already
1769 * checked that this type of scan was running in the generic
1770 * code.
1771 */
1772 uid = iwl_mvm_scan_uid_by_status(mvm, type);
1773 if (WARN_ON_ONCE(uid < 0))
1774 return uid;
1775
1776 cmd.uid = cpu_to_le32(uid);
1777
1778 IWL_DEBUG_SCAN(mvm, "Sending scan abort, uid %u\n", uid);
1779
1780 ret = iwl_mvm_send_cmd_pdu(mvm,
1781 iwl_cmd_id(SCAN_ABORT_UMAC,
1782 IWL_ALWAYS_LONG_GROUP, 0),
1783 0, sizeof(cmd), &cmd);
1784 if (!ret)
1785 mvm->scan_uid_status[uid] = type << IWL_MVM_SCAN_STOPPING_SHIFT;
1786
1787 return ret;
1788}
1789
1790static int iwl_mvm_scan_stop_wait(struct iwl_mvm *mvm, int type)
1791{
1792 struct iwl_notification_wait wait_scan_done;
1793 static const u16 scan_done_notif[] = { SCAN_COMPLETE_UMAC,
1794 SCAN_OFFLOAD_COMPLETE, };
1795 int ret;
1796
1797 lockdep_assert_held(&mvm->mutex);
1798
1799 iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_done,
1800 scan_done_notif,
1801 ARRAY_SIZE(scan_done_notif),
1802 NULL, NULL);
1803
1804 IWL_DEBUG_SCAN(mvm, "Preparing to stop scan, type %x\n", type);
1805
1806 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
1807 ret = iwl_mvm_umac_scan_abort(mvm, type);
1808 else
1809 ret = iwl_mvm_lmac_scan_abort(mvm);
1810
1811 if (ret) {
1812 IWL_DEBUG_SCAN(mvm, "couldn't stop scan type %d\n", type);
1813 iwl_remove_notification(&mvm->notif_wait, &wait_scan_done);
1814 return ret;
1815 }
1816
1817 ret = iwl_wait_notification(&mvm->notif_wait, &wait_scan_done, 1 * HZ);
1818
1819 return ret;
1820}
1821
1822int iwl_mvm_scan_size(struct iwl_mvm *mvm)
1823{
1824 int base_size = IWL_SCAN_REQ_UMAC_SIZE_V1;
1825
1826 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm))
1827 base_size = IWL_SCAN_REQ_UMAC_SIZE_V8;
1828 else if (iwl_mvm_is_adaptive_dwell_supported(mvm))
1829 base_size = IWL_SCAN_REQ_UMAC_SIZE_V7;
1830 else if (iwl_mvm_has_new_tx_api(mvm))
1831 base_size = IWL_SCAN_REQ_UMAC_SIZE_V6;
1832
1833 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
1834 return base_size +
1835 sizeof(struct iwl_scan_channel_cfg_umac) *
1836 mvm->fw->ucode_capa.n_scan_channels +
1837 sizeof(struct iwl_scan_req_umac_tail);
1838
1839 return sizeof(struct iwl_scan_req_lmac) +
1840 sizeof(struct iwl_scan_channel_cfg_lmac) *
1841 mvm->fw->ucode_capa.n_scan_channels +
1842 sizeof(struct iwl_scan_probe_req);
1843}
1844
1845/*
1846 * This function is used in nic restart flow, to inform mac80211 about scans
1847 * that was aborted by restart flow or by an assert.
1848 */
1849void iwl_mvm_report_scan_aborted(struct iwl_mvm *mvm)
1850{
1851 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
1852 int uid, i;
1853
1854 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_REGULAR);
1855 if (uid >= 0) {
1856 struct cfg80211_scan_info info = {
1857 .aborted = true,
1858 };
1859
1860 ieee80211_scan_completed(mvm->hw, &info);
1861 mvm->scan_uid_status[uid] = 0;
1862 }
1863 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_SCHED);
1864 if (uid >= 0 && !mvm->fw_restart) {
1865 ieee80211_sched_scan_stopped(mvm->hw);
1866 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
1867 mvm->scan_uid_status[uid] = 0;
1868 }
1869
1870 /* We shouldn't have any UIDs still set. Loop over all the
1871 * UIDs to make sure there's nothing left there and warn if
1872 * any is found.
1873 */
1874 for (i = 0; i < mvm->max_scans; i++) {
1875 if (WARN_ONCE(mvm->scan_uid_status[i],
1876 "UMAC scan UID %d status was not cleaned\n",
1877 i))
1878 mvm->scan_uid_status[i] = 0;
1879 }
1880 } else {
1881 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) {
1882 struct cfg80211_scan_info info = {
1883 .aborted = true,
1884 };
1885
1886 ieee80211_scan_completed(mvm->hw, &info);
1887 }
1888
1889 /* Sched scan will be restarted by mac80211 in
1890 * restart_hw, so do not report if FW is about to be
1891 * restarted.
1892 */
1893 if ((mvm->scan_status & IWL_MVM_SCAN_SCHED) &&
1894 !mvm->fw_restart) {
1895 ieee80211_sched_scan_stopped(mvm->hw);
1896 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
1897 }
1898 }
1899}
1900
1901int iwl_mvm_scan_stop(struct iwl_mvm *mvm, int type, bool notify)
1902{
1903 int ret;
1904
1905 if (!(mvm->scan_status & type))
1906 return 0;
1907
1908 if (iwl_mvm_is_radio_killed(mvm)) {
1909 ret = 0;
1910 goto out;
1911 }
1912
1913 ret = iwl_mvm_scan_stop_wait(mvm, type);
1914 if (!ret)
1915 mvm->scan_status |= type << IWL_MVM_SCAN_STOPPING_SHIFT;
1916out:
1917 /* Clear the scan status so the next scan requests will
1918 * succeed and mark the scan as stopping, so that the Rx
1919 * handler doesn't do anything, as the scan was stopped from
1920 * above.
1921 */
1922 mvm->scan_status &= ~type;
1923
1924 if (type == IWL_MVM_SCAN_REGULAR) {
1925 /* Since the rx handler won't do anything now, we have
1926 * to release the scan reference here.
1927 */
1928 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
1929 cancel_delayed_work(&mvm->scan_timeout_dwork);
1930 if (notify) {
1931 struct cfg80211_scan_info info = {
1932 .aborted = true,
1933 };
1934
1935 ieee80211_scan_completed(mvm->hw, &info);
1936 }
1937 } else if (notify) {
1938 ieee80211_sched_scan_stopped(mvm->hw);
1939 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
1940 }
1941
1942 return ret;
1943}
1// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2/*
3 * Copyright (C) 2012-2014, 2018-2021 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
48struct iwl_mvm_scan_timing_params {
49 u32 suspend_time;
50 u32 max_out_time;
51};
52
53static struct iwl_mvm_scan_timing_params scan_timing[] = {
54 [IWL_SCAN_TYPE_UNASSOC] = {
55 .suspend_time = 0,
56 .max_out_time = 0,
57 },
58 [IWL_SCAN_TYPE_WILD] = {
59 .suspend_time = 30,
60 .max_out_time = 120,
61 },
62 [IWL_SCAN_TYPE_MILD] = {
63 .suspend_time = 120,
64 .max_out_time = 120,
65 },
66 [IWL_SCAN_TYPE_FRAGMENTED] = {
67 .suspend_time = 95,
68 .max_out_time = 44,
69 },
70 [IWL_SCAN_TYPE_FAST_BALANCE] = {
71 .suspend_time = 30,
72 .max_out_time = 37,
73 },
74};
75
76struct iwl_mvm_scan_params {
77 /* For CDB this is low band scan type, for non-CDB - type. */
78 enum iwl_mvm_scan_type type;
79 enum iwl_mvm_scan_type hb_type;
80 u32 n_channels;
81 u16 delay;
82 int n_ssids;
83 struct cfg80211_ssid *ssids;
84 struct ieee80211_channel **channels;
85 u32 flags;
86 u8 *mac_addr;
87 u8 *mac_addr_mask;
88 bool no_cck;
89 bool pass_all;
90 int n_match_sets;
91 struct iwl_scan_probe_req preq;
92 struct cfg80211_match_set *match_sets;
93 int n_scan_plans;
94 struct cfg80211_sched_scan_plan *scan_plans;
95 bool iter_notif;
96 struct cfg80211_scan_6ghz_params *scan_6ghz_params;
97 u32 n_6ghz_params;
98 bool scan_6ghz;
99 bool enable_6ghz_passive;
100 bool respect_p2p_go, respect_p2p_go_hb;
101};
102
103static inline void *iwl_mvm_get_scan_req_umac_data(struct iwl_mvm *mvm)
104{
105 struct iwl_scan_req_umac *cmd = mvm->scan_cmd;
106
107 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm))
108 return (void *)&cmd->v8.data;
109
110 if (iwl_mvm_is_adaptive_dwell_supported(mvm))
111 return (void *)&cmd->v7.data;
112
113 if (iwl_mvm_cdb_scan_api(mvm))
114 return (void *)&cmd->v6.data;
115
116 return (void *)&cmd->v1.data;
117}
118
119static inline struct iwl_scan_umac_chan_param *
120iwl_mvm_get_scan_req_umac_channel(struct iwl_mvm *mvm)
121{
122 struct iwl_scan_req_umac *cmd = mvm->scan_cmd;
123
124 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm))
125 return &cmd->v8.channel;
126
127 if (iwl_mvm_is_adaptive_dwell_supported(mvm))
128 return &cmd->v7.channel;
129
130 if (iwl_mvm_cdb_scan_api(mvm))
131 return &cmd->v6.channel;
132
133 return &cmd->v1.channel;
134}
135
136static u8 iwl_mvm_scan_rx_ant(struct iwl_mvm *mvm)
137{
138 if (mvm->scan_rx_ant != ANT_NONE)
139 return mvm->scan_rx_ant;
140 return iwl_mvm_get_valid_rx_ant(mvm);
141}
142
143static inline __le16 iwl_mvm_scan_rx_chain(struct iwl_mvm *mvm)
144{
145 u16 rx_chain;
146 u8 rx_ant;
147
148 rx_ant = iwl_mvm_scan_rx_ant(mvm);
149 rx_chain = rx_ant << PHY_RX_CHAIN_VALID_POS;
150 rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_MIMO_SEL_POS;
151 rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_SEL_POS;
152 rx_chain |= 0x1 << PHY_RX_CHAIN_DRIVER_FORCE_POS;
153 return cpu_to_le16(rx_chain);
154}
155
156static inline __le32
157iwl_mvm_scan_rate_n_flags(struct iwl_mvm *mvm, enum nl80211_band band,
158 bool no_cck)
159{
160 u32 tx_ant;
161
162 iwl_mvm_toggle_tx_ant(mvm, &mvm->scan_last_antenna_idx);
163 tx_ant = BIT(mvm->scan_last_antenna_idx) << RATE_MCS_ANT_POS;
164
165 if (band == NL80211_BAND_2GHZ && !no_cck)
166 return cpu_to_le32(IWL_RATE_1M_PLCP | RATE_MCS_CCK_MSK_V1 |
167 tx_ant);
168 else
169 return cpu_to_le32(IWL_RATE_6M_PLCP | tx_ant);
170}
171
172static enum iwl_mvm_traffic_load iwl_mvm_get_traffic_load(struct iwl_mvm *mvm)
173{
174 return mvm->tcm.result.global_load;
175}
176
177static enum iwl_mvm_traffic_load
178iwl_mvm_get_traffic_load_band(struct iwl_mvm *mvm, enum nl80211_band band)
179{
180 return mvm->tcm.result.band_load[band];
181}
182
183struct iwl_mvm_scan_iter_data {
184 u32 global_cnt;
185 struct ieee80211_vif *current_vif;
186 bool is_dcm_with_p2p_go;
187};
188
189static void iwl_mvm_scan_iterator(void *_data, u8 *mac,
190 struct ieee80211_vif *vif)
191{
192 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
193 struct iwl_mvm_scan_iter_data *data = _data;
194 struct iwl_mvm_vif *curr_mvmvif;
195
196 if (vif->type != NL80211_IFTYPE_P2P_DEVICE && mvmvif->phy_ctxt &&
197 mvmvif->phy_ctxt->id < NUM_PHY_CTX)
198 data->global_cnt += 1;
199
200 if (!data->current_vif || vif == data->current_vif)
201 return;
202
203 curr_mvmvif = iwl_mvm_vif_from_mac80211(data->current_vif);
204
205 if (vif->type == NL80211_IFTYPE_AP && vif->p2p &&
206 mvmvif->phy_ctxt && curr_mvmvif->phy_ctxt &&
207 mvmvif->phy_ctxt->id != curr_mvmvif->phy_ctxt->id)
208 data->is_dcm_with_p2p_go = true;
209}
210
211static enum
212iwl_mvm_scan_type _iwl_mvm_get_scan_type(struct iwl_mvm *mvm,
213 struct ieee80211_vif *vif,
214 enum iwl_mvm_traffic_load load,
215 bool low_latency)
216{
217 struct iwl_mvm_scan_iter_data data = {
218 .current_vif = vif,
219 .is_dcm_with_p2p_go = false,
220 .global_cnt = 0,
221 };
222
223 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
224 IEEE80211_IFACE_ITER_NORMAL,
225 iwl_mvm_scan_iterator,
226 &data);
227
228 if (!data.global_cnt)
229 return IWL_SCAN_TYPE_UNASSOC;
230
231 if (fw_has_api(&mvm->fw->ucode_capa,
232 IWL_UCODE_TLV_API_FRAGMENTED_SCAN)) {
233 if ((load == IWL_MVM_TRAFFIC_HIGH || low_latency) &&
234 (!vif || vif->type != NL80211_IFTYPE_P2P_DEVICE))
235 return IWL_SCAN_TYPE_FRAGMENTED;
236
237 /*
238 * in case of DCM with GO where BSS DTIM interval < 220msec
239 * set all scan requests as fast-balance scan
240 */
241 if (vif && vif->type == NL80211_IFTYPE_STATION &&
242 vif->bss_conf.dtim_period < 220 &&
243 data.is_dcm_with_p2p_go)
244 return IWL_SCAN_TYPE_FAST_BALANCE;
245 }
246
247 if (load >= IWL_MVM_TRAFFIC_MEDIUM || low_latency)
248 return IWL_SCAN_TYPE_MILD;
249
250 return IWL_SCAN_TYPE_WILD;
251}
252
253static enum
254iwl_mvm_scan_type iwl_mvm_get_scan_type(struct iwl_mvm *mvm,
255 struct ieee80211_vif *vif)
256{
257 enum iwl_mvm_traffic_load load;
258 bool low_latency;
259
260 load = iwl_mvm_get_traffic_load(mvm);
261 low_latency = iwl_mvm_low_latency(mvm);
262
263 return _iwl_mvm_get_scan_type(mvm, vif, load, low_latency);
264}
265
266static enum
267iwl_mvm_scan_type iwl_mvm_get_scan_type_band(struct iwl_mvm *mvm,
268 struct ieee80211_vif *vif,
269 enum nl80211_band band)
270{
271 enum iwl_mvm_traffic_load load;
272 bool low_latency;
273
274 load = iwl_mvm_get_traffic_load_band(mvm, band);
275 low_latency = iwl_mvm_low_latency_band(mvm, band);
276
277 return _iwl_mvm_get_scan_type(mvm, vif, load, low_latency);
278}
279
280static inline bool iwl_mvm_rrm_scan_needed(struct iwl_mvm *mvm)
281{
282 /* require rrm scan whenever the fw supports it */
283 return fw_has_capa(&mvm->fw->ucode_capa,
284 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT);
285}
286
287static int iwl_mvm_max_scan_ie_fw_cmd_room(struct iwl_mvm *mvm)
288{
289 int max_probe_len;
290
291 max_probe_len = SCAN_OFFLOAD_PROBE_REQ_SIZE;
292
293 /* we create the 802.11 header and SSID element */
294 max_probe_len -= 24 + 2;
295
296 /* DS parameter set element is added on 2.4GHZ band if required */
297 if (iwl_mvm_rrm_scan_needed(mvm))
298 max_probe_len -= 3;
299
300 return max_probe_len;
301}
302
303int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm)
304{
305 int max_ie_len = iwl_mvm_max_scan_ie_fw_cmd_room(mvm);
306
307 /* TODO: [BUG] This function should return the maximum allowed size of
308 * scan IEs, however the LMAC scan api contains both 2GHZ and 5GHZ IEs
309 * in the same command. So the correct implementation of this function
310 * is just iwl_mvm_max_scan_ie_fw_cmd_room() / 2. Currently the scan
311 * command has only 512 bytes and it would leave us with about 240
312 * bytes for scan IEs, which is clearly not enough. So meanwhile
313 * we will report an incorrect value. This may result in a failure to
314 * issue a scan in unified_scan_lmac and unified_sched_scan_lmac
315 * functions with -ENOBUFS, if a large enough probe will be provided.
316 */
317 return max_ie_len;
318}
319
320void iwl_mvm_rx_lmac_scan_iter_complete_notif(struct iwl_mvm *mvm,
321 struct iwl_rx_cmd_buffer *rxb)
322{
323 struct iwl_rx_packet *pkt = rxb_addr(rxb);
324 struct iwl_lmac_scan_complete_notif *notif = (void *)pkt->data;
325
326 IWL_DEBUG_SCAN(mvm,
327 "Scan offload iteration complete: status=0x%x scanned channels=%d\n",
328 notif->status, notif->scanned_channels);
329
330 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) {
331 IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n");
332 ieee80211_sched_scan_results(mvm->hw);
333 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED;
334 }
335}
336
337void iwl_mvm_rx_scan_match_found(struct iwl_mvm *mvm,
338 struct iwl_rx_cmd_buffer *rxb)
339{
340 IWL_DEBUG_SCAN(mvm, "Scheduled scan results\n");
341 ieee80211_sched_scan_results(mvm->hw);
342}
343
344static const char *iwl_mvm_ebs_status_str(enum iwl_scan_ebs_status status)
345{
346 switch (status) {
347 case IWL_SCAN_EBS_SUCCESS:
348 return "successful";
349 case IWL_SCAN_EBS_INACTIVE:
350 return "inactive";
351 case IWL_SCAN_EBS_FAILED:
352 case IWL_SCAN_EBS_CHAN_NOT_FOUND:
353 default:
354 return "failed";
355 }
356}
357
358void iwl_mvm_rx_lmac_scan_complete_notif(struct iwl_mvm *mvm,
359 struct iwl_rx_cmd_buffer *rxb)
360{
361 struct iwl_rx_packet *pkt = rxb_addr(rxb);
362 struct iwl_periodic_scan_complete *scan_notif = (void *)pkt->data;
363 bool aborted = (scan_notif->status == IWL_SCAN_OFFLOAD_ABORTED);
364
365 /* If this happens, the firmware has mistakenly sent an LMAC
366 * notification during UMAC scans -- warn and ignore it.
367 */
368 if (WARN_ON_ONCE(fw_has_capa(&mvm->fw->ucode_capa,
369 IWL_UCODE_TLV_CAPA_UMAC_SCAN)))
370 return;
371
372 /* scan status must be locked for proper checking */
373 lockdep_assert_held(&mvm->mutex);
374
375 /* We first check if we were stopping a scan, in which case we
376 * just clear the stopping flag. Then we check if it was a
377 * firmware initiated stop, in which case we need to inform
378 * mac80211.
379 * Note that we can have a stopping and a running scan
380 * simultaneously, but we can't have two different types of
381 * scans stopping or running at the same time (since LMAC
382 * doesn't support it).
383 */
384
385 if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_SCHED) {
386 WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR);
387
388 IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n",
389 aborted ? "aborted" : "completed",
390 iwl_mvm_ebs_status_str(scan_notif->ebs_status));
391 IWL_DEBUG_SCAN(mvm,
392 "Last line %d, Last iteration %d, Time after last iteration %d\n",
393 scan_notif->last_schedule_line,
394 scan_notif->last_schedule_iteration,
395 __le32_to_cpu(scan_notif->time_after_last_iter));
396
397 mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_SCHED;
398 } else if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR) {
399 IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s\n",
400 aborted ? "aborted" : "completed",
401 iwl_mvm_ebs_status_str(scan_notif->ebs_status));
402
403 mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_REGULAR;
404 } else if (mvm->scan_status & IWL_MVM_SCAN_SCHED) {
405 WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_REGULAR);
406
407 IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n",
408 aborted ? "aborted" : "completed",
409 iwl_mvm_ebs_status_str(scan_notif->ebs_status));
410 IWL_DEBUG_SCAN(mvm,
411 "Last line %d, Last iteration %d, Time after last iteration %d (FW)\n",
412 scan_notif->last_schedule_line,
413 scan_notif->last_schedule_iteration,
414 __le32_to_cpu(scan_notif->time_after_last_iter));
415
416 mvm->scan_status &= ~IWL_MVM_SCAN_SCHED;
417 ieee80211_sched_scan_stopped(mvm->hw);
418 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
419 } else if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) {
420 struct cfg80211_scan_info info = {
421 .aborted = aborted,
422 };
423
424 IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s (FW)\n",
425 aborted ? "aborted" : "completed",
426 iwl_mvm_ebs_status_str(scan_notif->ebs_status));
427
428 mvm->scan_status &= ~IWL_MVM_SCAN_REGULAR;
429 ieee80211_scan_completed(mvm->hw, &info);
430 cancel_delayed_work(&mvm->scan_timeout_dwork);
431 iwl_mvm_resume_tcm(mvm);
432 } else {
433 IWL_ERR(mvm,
434 "got scan complete notification but no scan is running\n");
435 }
436
437 mvm->last_ebs_successful =
438 scan_notif->ebs_status == IWL_SCAN_EBS_SUCCESS ||
439 scan_notif->ebs_status == IWL_SCAN_EBS_INACTIVE;
440}
441
442static int iwl_ssid_exist(u8 *ssid, u8 ssid_len, struct iwl_ssid_ie *ssid_list)
443{
444 int i;
445
446 for (i = 0; i < PROBE_OPTION_MAX; i++) {
447 if (!ssid_list[i].len)
448 break;
449 if (ssid_list[i].len == ssid_len &&
450 !memcmp(ssid_list->ssid, ssid, ssid_len))
451 return i;
452 }
453 return -1;
454}
455
456/* We insert the SSIDs in an inverted order, because the FW will
457 * invert it back.
458 */
459static void iwl_scan_build_ssids(struct iwl_mvm_scan_params *params,
460 struct iwl_ssid_ie *ssids,
461 u32 *ssid_bitmap)
462{
463 int i, j;
464 int index;
465 u32 tmp_bitmap = 0;
466
467 /*
468 * copy SSIDs from match list.
469 * iwl_config_sched_scan_profiles() uses the order of these ssids to
470 * config match list.
471 */
472 for (i = 0, j = params->n_match_sets - 1;
473 j >= 0 && i < PROBE_OPTION_MAX;
474 i++, j--) {
475 /* skip empty SSID matchsets */
476 if (!params->match_sets[j].ssid.ssid_len)
477 continue;
478 ssids[i].id = WLAN_EID_SSID;
479 ssids[i].len = params->match_sets[j].ssid.ssid_len;
480 memcpy(ssids[i].ssid, params->match_sets[j].ssid.ssid,
481 ssids[i].len);
482 }
483
484 /* add SSIDs from scan SSID list */
485 for (j = params->n_ssids - 1;
486 j >= 0 && i < PROBE_OPTION_MAX;
487 i++, j--) {
488 index = iwl_ssid_exist(params->ssids[j].ssid,
489 params->ssids[j].ssid_len,
490 ssids);
491 if (index < 0) {
492 ssids[i].id = WLAN_EID_SSID;
493 ssids[i].len = params->ssids[j].ssid_len;
494 memcpy(ssids[i].ssid, params->ssids[j].ssid,
495 ssids[i].len);
496 tmp_bitmap |= BIT(i);
497 } else {
498 tmp_bitmap |= BIT(index);
499 }
500 }
501 if (ssid_bitmap)
502 *ssid_bitmap = tmp_bitmap;
503}
504
505static int
506iwl_mvm_config_sched_scan_profiles(struct iwl_mvm *mvm,
507 struct cfg80211_sched_scan_request *req)
508{
509 struct iwl_scan_offload_profile *profile;
510 struct iwl_scan_offload_profile_cfg_v1 *profile_cfg_v1;
511 struct iwl_scan_offload_blocklist *blocklist;
512 struct iwl_scan_offload_profile_cfg_data *data;
513 int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw);
514 int profile_cfg_size = sizeof(*data) +
515 sizeof(*profile) * max_profiles;
516 struct iwl_host_cmd cmd = {
517 .id = SCAN_OFFLOAD_UPDATE_PROFILES_CMD,
518 .len[1] = profile_cfg_size,
519 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
520 .dataflags[1] = IWL_HCMD_DFL_NOCOPY,
521 };
522 int blocklist_len;
523 int i;
524 int ret;
525
526 if (WARN_ON(req->n_match_sets > max_profiles))
527 return -EIO;
528
529 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SHORT_BL)
530 blocklist_len = IWL_SCAN_SHORT_BLACKLIST_LEN;
531 else
532 blocklist_len = IWL_SCAN_MAX_BLACKLIST_LEN;
533
534 blocklist = kcalloc(blocklist_len, sizeof(*blocklist), GFP_KERNEL);
535 if (!blocklist)
536 return -ENOMEM;
537
538 profile_cfg_v1 = kzalloc(profile_cfg_size, GFP_KERNEL);
539 if (!profile_cfg_v1) {
540 ret = -ENOMEM;
541 goto free_blocklist;
542 }
543
544 cmd.data[0] = blocklist;
545 cmd.len[0] = sizeof(*blocklist) * blocklist_len;
546 cmd.data[1] = profile_cfg_v1;
547
548 /* if max_profile is MAX_PROFILES_V2, we have the new API */
549 if (max_profiles == IWL_SCAN_MAX_PROFILES_V2) {
550 struct iwl_scan_offload_profile_cfg *profile_cfg =
551 (struct iwl_scan_offload_profile_cfg *)profile_cfg_v1;
552
553 data = &profile_cfg->data;
554 } else {
555 data = &profile_cfg_v1->data;
556 }
557
558 /* No blocklist configuration */
559 data->num_profiles = req->n_match_sets;
560 data->active_clients = SCAN_CLIENT_SCHED_SCAN;
561 data->pass_match = SCAN_CLIENT_SCHED_SCAN;
562 data->match_notify = SCAN_CLIENT_SCHED_SCAN;
563
564 if (!req->n_match_sets || !req->match_sets[0].ssid.ssid_len)
565 data->any_beacon_notify = SCAN_CLIENT_SCHED_SCAN;
566
567 for (i = 0; i < req->n_match_sets; i++) {
568 profile = &profile_cfg_v1->profiles[i];
569 profile->ssid_index = i;
570 /* Support any cipher and auth algorithm */
571 profile->unicast_cipher = 0xff;
572 profile->auth_alg = IWL_AUTH_ALGO_UNSUPPORTED |
573 IWL_AUTH_ALGO_NONE | IWL_AUTH_ALGO_PSK | IWL_AUTH_ALGO_8021X |
574 IWL_AUTH_ALGO_SAE | IWL_AUTH_ALGO_8021X_SHA384 | IWL_AUTH_ALGO_OWE;
575 profile->network_type = IWL_NETWORK_TYPE_ANY;
576 profile->band_selection = IWL_SCAN_OFFLOAD_SELECT_ANY;
577 profile->client_bitmap = SCAN_CLIENT_SCHED_SCAN;
578 }
579
580 IWL_DEBUG_SCAN(mvm, "Sending scheduled scan profile config\n");
581
582 ret = iwl_mvm_send_cmd(mvm, &cmd);
583 kfree(profile_cfg_v1);
584free_blocklist:
585 kfree(blocklist);
586
587 return ret;
588}
589
590static bool iwl_mvm_scan_pass_all(struct iwl_mvm *mvm,
591 struct cfg80211_sched_scan_request *req)
592{
593 if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) {
594 IWL_DEBUG_SCAN(mvm,
595 "Sending scheduled scan with filtering, n_match_sets %d\n",
596 req->n_match_sets);
597 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
598 return false;
599 }
600
601 IWL_DEBUG_SCAN(mvm, "Sending Scheduled scan without filtering\n");
602
603 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED;
604 return true;
605}
606
607static int iwl_mvm_lmac_scan_abort(struct iwl_mvm *mvm)
608{
609 int ret;
610 struct iwl_host_cmd cmd = {
611 .id = SCAN_OFFLOAD_ABORT_CMD,
612 };
613 u32 status = CAN_ABORT_STATUS;
614
615 ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status);
616 if (ret)
617 return ret;
618
619 if (status != CAN_ABORT_STATUS) {
620 /*
621 * The scan abort will return 1 for success or
622 * 2 for "failure". A failure condition can be
623 * due to simply not being in an active scan which
624 * can occur if we send the scan abort before the
625 * microcode has notified us that a scan is completed.
626 */
627 IWL_DEBUG_SCAN(mvm, "SCAN OFFLOAD ABORT ret %d.\n", status);
628 ret = -ENOENT;
629 }
630
631 return ret;
632}
633
634static void iwl_mvm_scan_fill_tx_cmd(struct iwl_mvm *mvm,
635 struct iwl_scan_req_tx_cmd *tx_cmd,
636 bool no_cck)
637{
638 tx_cmd[0].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL |
639 TX_CMD_FLG_BT_DIS);
640 tx_cmd[0].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm,
641 NL80211_BAND_2GHZ,
642 no_cck);
643
644 if (iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA, 0) < 12) {
645 tx_cmd[0].sta_id = mvm->aux_sta.sta_id;
646 tx_cmd[1].sta_id = mvm->aux_sta.sta_id;
647
648 /*
649 * Fw doesn't use this sta anymore, pending deprecation via HOST API
650 * change
651 */
652 } else {
653 tx_cmd[0].sta_id = 0xff;
654 tx_cmd[1].sta_id = 0xff;
655 }
656
657 tx_cmd[1].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL |
658 TX_CMD_FLG_BT_DIS);
659
660 tx_cmd[1].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm,
661 NL80211_BAND_5GHZ,
662 no_cck);
663}
664
665static void
666iwl_mvm_lmac_scan_cfg_channels(struct iwl_mvm *mvm,
667 struct ieee80211_channel **channels,
668 int n_channels, u32 ssid_bitmap,
669 struct iwl_scan_req_lmac *cmd)
670{
671 struct iwl_scan_channel_cfg_lmac *channel_cfg = (void *)&cmd->data;
672 int i;
673
674 for (i = 0; i < n_channels; i++) {
675 channel_cfg[i].channel_num =
676 cpu_to_le16(channels[i]->hw_value);
677 channel_cfg[i].iter_count = cpu_to_le16(1);
678 channel_cfg[i].iter_interval = 0;
679 channel_cfg[i].flags =
680 cpu_to_le32(IWL_UNIFIED_SCAN_CHANNEL_PARTIAL |
681 ssid_bitmap);
682 }
683}
684
685static u8 *iwl_mvm_copy_and_insert_ds_elem(struct iwl_mvm *mvm, const u8 *ies,
686 size_t len, u8 *const pos)
687{
688 static const u8 before_ds_params[] = {
689 WLAN_EID_SSID,
690 WLAN_EID_SUPP_RATES,
691 WLAN_EID_REQUEST,
692 WLAN_EID_EXT_SUPP_RATES,
693 };
694 size_t offs;
695 u8 *newpos = pos;
696
697 if (!iwl_mvm_rrm_scan_needed(mvm)) {
698 memcpy(newpos, ies, len);
699 return newpos + len;
700 }
701
702 offs = ieee80211_ie_split(ies, len,
703 before_ds_params,
704 ARRAY_SIZE(before_ds_params),
705 0);
706
707 memcpy(newpos, ies, offs);
708 newpos += offs;
709
710 /* Add a placeholder for DS Parameter Set element */
711 *newpos++ = WLAN_EID_DS_PARAMS;
712 *newpos++ = 1;
713 *newpos++ = 0;
714
715 memcpy(newpos, ies + offs, len - offs);
716 newpos += len - offs;
717
718 return newpos;
719}
720
721#define WFA_TPC_IE_LEN 9
722
723static void iwl_mvm_add_tpc_report_ie(u8 *pos)
724{
725 pos[0] = WLAN_EID_VENDOR_SPECIFIC;
726 pos[1] = WFA_TPC_IE_LEN - 2;
727 pos[2] = (WLAN_OUI_MICROSOFT >> 16) & 0xff;
728 pos[3] = (WLAN_OUI_MICROSOFT >> 8) & 0xff;
729 pos[4] = WLAN_OUI_MICROSOFT & 0xff;
730 pos[5] = WLAN_OUI_TYPE_MICROSOFT_TPC;
731 pos[6] = 0;
732 /* pos[7] - tx power will be inserted by the FW */
733 pos[7] = 0;
734 pos[8] = 0;
735}
736
737static void
738iwl_mvm_build_scan_probe(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
739 struct ieee80211_scan_ies *ies,
740 struct iwl_mvm_scan_params *params)
741{
742 struct ieee80211_mgmt *frame = (void *)params->preq.buf;
743 u8 *pos, *newpos;
744 const u8 *mac_addr = params->flags & NL80211_SCAN_FLAG_RANDOM_ADDR ?
745 params->mac_addr : NULL;
746
747 /*
748 * Unfortunately, right now the offload scan doesn't support randomising
749 * within the firmware, so until the firmware API is ready we implement
750 * it in the driver. This means that the scan iterations won't really be
751 * random, only when it's restarted, but at least that helps a bit.
752 */
753 if (mac_addr)
754 get_random_mask_addr(frame->sa, mac_addr,
755 params->mac_addr_mask);
756 else
757 memcpy(frame->sa, vif->addr, ETH_ALEN);
758
759 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
760 eth_broadcast_addr(frame->da);
761 eth_broadcast_addr(frame->bssid);
762 frame->seq_ctrl = 0;
763
764 pos = frame->u.probe_req.variable;
765 *pos++ = WLAN_EID_SSID;
766 *pos++ = 0;
767
768 params->preq.mac_header.offset = 0;
769 params->preq.mac_header.len = cpu_to_le16(24 + 2);
770
771 /* Insert ds parameter set element on 2.4 GHz band */
772 newpos = iwl_mvm_copy_and_insert_ds_elem(mvm,
773 ies->ies[NL80211_BAND_2GHZ],
774 ies->len[NL80211_BAND_2GHZ],
775 pos);
776 params->preq.band_data[0].offset = cpu_to_le16(pos - params->preq.buf);
777 params->preq.band_data[0].len = cpu_to_le16(newpos - pos);
778 pos = newpos;
779
780 memcpy(pos, ies->ies[NL80211_BAND_5GHZ],
781 ies->len[NL80211_BAND_5GHZ]);
782 params->preq.band_data[1].offset = cpu_to_le16(pos - params->preq.buf);
783 params->preq.band_data[1].len =
784 cpu_to_le16(ies->len[NL80211_BAND_5GHZ]);
785 pos += ies->len[NL80211_BAND_5GHZ];
786
787 memcpy(pos, ies->ies[NL80211_BAND_6GHZ],
788 ies->len[NL80211_BAND_6GHZ]);
789 params->preq.band_data[2].offset = cpu_to_le16(pos - params->preq.buf);
790 params->preq.band_data[2].len =
791 cpu_to_le16(ies->len[NL80211_BAND_6GHZ]);
792 pos += ies->len[NL80211_BAND_6GHZ];
793 memcpy(pos, ies->common_ies, ies->common_ie_len);
794 params->preq.common_data.offset = cpu_to_le16(pos - params->preq.buf);
795
796 if (iwl_mvm_rrm_scan_needed(mvm) &&
797 !fw_has_capa(&mvm->fw->ucode_capa,
798 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) {
799 iwl_mvm_add_tpc_report_ie(pos + ies->common_ie_len);
800 params->preq.common_data.len = cpu_to_le16(ies->common_ie_len +
801 WFA_TPC_IE_LEN);
802 } else {
803 params->preq.common_data.len = cpu_to_le16(ies->common_ie_len);
804 }
805}
806
807static void iwl_mvm_scan_lmac_dwell(struct iwl_mvm *mvm,
808 struct iwl_scan_req_lmac *cmd,
809 struct iwl_mvm_scan_params *params)
810{
811 cmd->active_dwell = IWL_SCAN_DWELL_ACTIVE;
812 cmd->passive_dwell = IWL_SCAN_DWELL_PASSIVE;
813 cmd->fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED;
814 cmd->extended_dwell = IWL_SCAN_DWELL_EXTENDED;
815 cmd->max_out_time = cpu_to_le32(scan_timing[params->type].max_out_time);
816 cmd->suspend_time = cpu_to_le32(scan_timing[params->type].suspend_time);
817 cmd->scan_prio = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
818}
819
820static inline bool iwl_mvm_scan_fits(struct iwl_mvm *mvm, int n_ssids,
821 struct ieee80211_scan_ies *ies,
822 int n_channels)
823{
824 return ((n_ssids <= PROBE_OPTION_MAX) &&
825 (n_channels <= mvm->fw->ucode_capa.n_scan_channels) &
826 (ies->common_ie_len +
827 ies->len[NL80211_BAND_2GHZ] +
828 ies->len[NL80211_BAND_5GHZ] <=
829 iwl_mvm_max_scan_ie_fw_cmd_room(mvm)));
830}
831
832static inline bool iwl_mvm_scan_use_ebs(struct iwl_mvm *mvm,
833 struct ieee80211_vif *vif)
834{
835 const struct iwl_ucode_capabilities *capa = &mvm->fw->ucode_capa;
836 bool low_latency;
837
838 if (iwl_mvm_is_cdb_supported(mvm))
839 low_latency = iwl_mvm_low_latency_band(mvm, NL80211_BAND_5GHZ);
840 else
841 low_latency = iwl_mvm_low_latency(mvm);
842
843 /* We can only use EBS if:
844 * 1. the feature is supported;
845 * 2. the last EBS was successful;
846 * 3. if only single scan, the single scan EBS API is supported;
847 * 4. it's not a p2p find operation.
848 * 5. we are not in low latency mode,
849 * or if fragmented ebs is supported by the FW
850 */
851 return ((capa->flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT) &&
852 mvm->last_ebs_successful && IWL_MVM_ENABLE_EBS &&
853 vif->type != NL80211_IFTYPE_P2P_DEVICE &&
854 (!low_latency || iwl_mvm_is_frag_ebs_supported(mvm)));
855}
856
857static inline bool iwl_mvm_is_regular_scan(struct iwl_mvm_scan_params *params)
858{
859 return params->n_scan_plans == 1 &&
860 params->scan_plans[0].iterations == 1;
861}
862
863static bool iwl_mvm_is_scan_fragmented(enum iwl_mvm_scan_type type)
864{
865 return (type == IWL_SCAN_TYPE_FRAGMENTED ||
866 type == IWL_SCAN_TYPE_FAST_BALANCE);
867}
868
869static int iwl_mvm_scan_lmac_flags(struct iwl_mvm *mvm,
870 struct iwl_mvm_scan_params *params,
871 struct ieee80211_vif *vif)
872{
873 int flags = 0;
874
875 if (params->n_ssids == 0)
876 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE;
877
878 if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0)
879 flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION;
880
881 if (iwl_mvm_is_scan_fragmented(params->type))
882 flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED;
883
884 if (iwl_mvm_rrm_scan_needed(mvm) &&
885 fw_has_capa(&mvm->fw->ucode_capa,
886 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
887 flags |= IWL_MVM_LMAC_SCAN_FLAGS_RRM_ENABLED;
888
889 if (params->pass_all)
890 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL;
891 else
892 flags |= IWL_MVM_LMAC_SCAN_FLAG_MATCH;
893
894#ifdef CONFIG_IWLWIFI_DEBUGFS
895 if (mvm->scan_iter_notif_enabled)
896 flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE;
897#endif
898
899 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED)
900 flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE;
901
902 if (iwl_mvm_is_regular_scan(params) &&
903 vif->type != NL80211_IFTYPE_P2P_DEVICE &&
904 !iwl_mvm_is_scan_fragmented(params->type))
905 flags |= IWL_MVM_LMAC_SCAN_FLAG_EXTENDED_DWELL;
906
907 return flags;
908}
909
910static void
911iwl_mvm_scan_set_legacy_probe_req(struct iwl_scan_probe_req_v1 *p_req,
912 struct iwl_scan_probe_req *src_p_req)
913{
914 int i;
915
916 p_req->mac_header = src_p_req->mac_header;
917 for (i = 0; i < SCAN_NUM_BAND_PROBE_DATA_V_1; i++)
918 p_req->band_data[i] = src_p_req->band_data[i];
919 p_req->common_data = src_p_req->common_data;
920 memcpy(p_req->buf, src_p_req->buf, sizeof(p_req->buf));
921}
922
923static int iwl_mvm_scan_lmac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
924 struct iwl_mvm_scan_params *params)
925{
926 struct iwl_scan_req_lmac *cmd = mvm->scan_cmd;
927 struct iwl_scan_probe_req_v1 *preq =
928 (void *)(cmd->data + sizeof(struct iwl_scan_channel_cfg_lmac) *
929 mvm->fw->ucode_capa.n_scan_channels);
930 u32 ssid_bitmap = 0;
931 int i;
932 u8 band;
933
934 if (WARN_ON(params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS))
935 return -EINVAL;
936
937 iwl_mvm_scan_lmac_dwell(mvm, cmd, params);
938
939 cmd->rx_chain_select = iwl_mvm_scan_rx_chain(mvm);
940 cmd->iter_num = cpu_to_le32(1);
941 cmd->n_channels = (u8)params->n_channels;
942
943 cmd->delay = cpu_to_le32(params->delay);
944
945 cmd->scan_flags = cpu_to_le32(iwl_mvm_scan_lmac_flags(mvm, params,
946 vif));
947
948 band = iwl_mvm_phy_band_from_nl80211(params->channels[0]->band);
949 cmd->flags = cpu_to_le32(band);
950 cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP |
951 MAC_FILTER_IN_BEACON);
952 iwl_mvm_scan_fill_tx_cmd(mvm, cmd->tx_cmd, params->no_cck);
953 iwl_scan_build_ssids(params, cmd->direct_scan, &ssid_bitmap);
954
955 /* this API uses bits 1-20 instead of 0-19 */
956 ssid_bitmap <<= 1;
957
958 for (i = 0; i < params->n_scan_plans; i++) {
959 struct cfg80211_sched_scan_plan *scan_plan =
960 ¶ms->scan_plans[i];
961
962 cmd->schedule[i].delay =
963 cpu_to_le16(scan_plan->interval);
964 cmd->schedule[i].iterations = scan_plan->iterations;
965 cmd->schedule[i].full_scan_mul = 1;
966 }
967
968 /*
969 * If the number of iterations of the last scan plan is set to
970 * zero, it should run infinitely. However, this is not always the case.
971 * For example, when regular scan is requested the driver sets one scan
972 * plan with one iteration.
973 */
974 if (!cmd->schedule[i - 1].iterations)
975 cmd->schedule[i - 1].iterations = 0xff;
976
977 if (iwl_mvm_scan_use_ebs(mvm, vif)) {
978 cmd->channel_opt[0].flags =
979 cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS |
980 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
981 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD);
982 cmd->channel_opt[0].non_ebs_ratio =
983 cpu_to_le16(IWL_DENSE_EBS_SCAN_RATIO);
984 cmd->channel_opt[1].flags =
985 cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS |
986 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
987 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD);
988 cmd->channel_opt[1].non_ebs_ratio =
989 cpu_to_le16(IWL_SPARSE_EBS_SCAN_RATIO);
990 }
991
992 iwl_mvm_lmac_scan_cfg_channels(mvm, params->channels,
993 params->n_channels, ssid_bitmap, cmd);
994
995 iwl_mvm_scan_set_legacy_probe_req(preq, ¶ms->preq);
996
997 return 0;
998}
999
1000static int rate_to_scan_rate_flag(unsigned int rate)
1001{
1002 static const int rate_to_scan_rate[IWL_RATE_COUNT] = {
1003 [IWL_RATE_1M_INDEX] = SCAN_CONFIG_RATE_1M,
1004 [IWL_RATE_2M_INDEX] = SCAN_CONFIG_RATE_2M,
1005 [IWL_RATE_5M_INDEX] = SCAN_CONFIG_RATE_5M,
1006 [IWL_RATE_11M_INDEX] = SCAN_CONFIG_RATE_11M,
1007 [IWL_RATE_6M_INDEX] = SCAN_CONFIG_RATE_6M,
1008 [IWL_RATE_9M_INDEX] = SCAN_CONFIG_RATE_9M,
1009 [IWL_RATE_12M_INDEX] = SCAN_CONFIG_RATE_12M,
1010 [IWL_RATE_18M_INDEX] = SCAN_CONFIG_RATE_18M,
1011 [IWL_RATE_24M_INDEX] = SCAN_CONFIG_RATE_24M,
1012 [IWL_RATE_36M_INDEX] = SCAN_CONFIG_RATE_36M,
1013 [IWL_RATE_48M_INDEX] = SCAN_CONFIG_RATE_48M,
1014 [IWL_RATE_54M_INDEX] = SCAN_CONFIG_RATE_54M,
1015 };
1016
1017 return rate_to_scan_rate[rate];
1018}
1019
1020static __le32 iwl_mvm_scan_config_rates(struct iwl_mvm *mvm)
1021{
1022 struct ieee80211_supported_band *band;
1023 unsigned int rates = 0;
1024 int i;
1025
1026 band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ];
1027 for (i = 0; i < band->n_bitrates; i++)
1028 rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value);
1029 band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ];
1030 for (i = 0; i < band->n_bitrates; i++)
1031 rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value);
1032
1033 /* Set both basic rates and supported rates */
1034 rates |= SCAN_CONFIG_SUPPORTED_RATE(rates);
1035
1036 return cpu_to_le32(rates);
1037}
1038
1039static void iwl_mvm_fill_scan_dwell(struct iwl_mvm *mvm,
1040 struct iwl_scan_dwell *dwell)
1041{
1042 dwell->active = IWL_SCAN_DWELL_ACTIVE;
1043 dwell->passive = IWL_SCAN_DWELL_PASSIVE;
1044 dwell->fragmented = IWL_SCAN_DWELL_FRAGMENTED;
1045 dwell->extended = IWL_SCAN_DWELL_EXTENDED;
1046}
1047
1048static void iwl_mvm_fill_channels(struct iwl_mvm *mvm, u8 *channels,
1049 u32 max_channels)
1050{
1051 struct ieee80211_supported_band *band;
1052 int i, j = 0;
1053
1054 band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ];
1055 for (i = 0; i < band->n_channels && j < max_channels; i++, j++)
1056 channels[j] = band->channels[i].hw_value;
1057 band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ];
1058 for (i = 0; i < band->n_channels && j < max_channels; i++, j++)
1059 channels[j] = band->channels[i].hw_value;
1060}
1061
1062static void iwl_mvm_fill_scan_config_v1(struct iwl_mvm *mvm, void *config,
1063 u32 flags, u8 channel_flags,
1064 u32 max_channels)
1065{
1066 enum iwl_mvm_scan_type type = iwl_mvm_get_scan_type(mvm, NULL);
1067 struct iwl_scan_config_v1 *cfg = config;
1068
1069 cfg->flags = cpu_to_le32(flags);
1070 cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm));
1071 cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm));
1072 cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm);
1073 cfg->out_of_channel_time = cpu_to_le32(scan_timing[type].max_out_time);
1074 cfg->suspend_time = cpu_to_le32(scan_timing[type].suspend_time);
1075
1076 iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell);
1077
1078 memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN);
1079
1080 /* This function should not be called when using ADD_STA ver >=12 */
1081 WARN_ON_ONCE(iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA, 0) >= 12);
1082
1083 cfg->bcast_sta_id = mvm->aux_sta.sta_id;
1084 cfg->channel_flags = channel_flags;
1085
1086 iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels);
1087}
1088
1089static void iwl_mvm_fill_scan_config_v2(struct iwl_mvm *mvm, void *config,
1090 u32 flags, u8 channel_flags,
1091 u32 max_channels)
1092{
1093 struct iwl_scan_config_v2 *cfg = config;
1094
1095 cfg->flags = cpu_to_le32(flags);
1096 cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm));
1097 cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm));
1098 cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm);
1099
1100 if (iwl_mvm_is_cdb_supported(mvm)) {
1101 enum iwl_mvm_scan_type lb_type, hb_type;
1102
1103 lb_type = iwl_mvm_get_scan_type_band(mvm, NULL,
1104 NL80211_BAND_2GHZ);
1105 hb_type = iwl_mvm_get_scan_type_band(mvm, NULL,
1106 NL80211_BAND_5GHZ);
1107
1108 cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] =
1109 cpu_to_le32(scan_timing[lb_type].max_out_time);
1110 cfg->suspend_time[SCAN_LB_LMAC_IDX] =
1111 cpu_to_le32(scan_timing[lb_type].suspend_time);
1112
1113 cfg->out_of_channel_time[SCAN_HB_LMAC_IDX] =
1114 cpu_to_le32(scan_timing[hb_type].max_out_time);
1115 cfg->suspend_time[SCAN_HB_LMAC_IDX] =
1116 cpu_to_le32(scan_timing[hb_type].suspend_time);
1117 } else {
1118 enum iwl_mvm_scan_type type =
1119 iwl_mvm_get_scan_type(mvm, NULL);
1120
1121 cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] =
1122 cpu_to_le32(scan_timing[type].max_out_time);
1123 cfg->suspend_time[SCAN_LB_LMAC_IDX] =
1124 cpu_to_le32(scan_timing[type].suspend_time);
1125 }
1126
1127 iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell);
1128
1129 memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN);
1130
1131 /* This function should not be called when using ADD_STA ver >=12 */
1132 WARN_ON_ONCE(iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA, 0) >= 12);
1133
1134 cfg->bcast_sta_id = mvm->aux_sta.sta_id;
1135 cfg->channel_flags = channel_flags;
1136
1137 iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels);
1138}
1139
1140static int iwl_mvm_legacy_config_scan(struct iwl_mvm *mvm)
1141{
1142 void *cfg;
1143 int ret, cmd_size;
1144 struct iwl_host_cmd cmd = {
1145 .id = WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_CFG_CMD),
1146 };
1147 enum iwl_mvm_scan_type type;
1148 enum iwl_mvm_scan_type hb_type = IWL_SCAN_TYPE_NOT_SET;
1149 int num_channels =
1150 mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels +
1151 mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels;
1152 u32 flags;
1153 u8 channel_flags;
1154
1155 if (WARN_ON(num_channels > mvm->fw->ucode_capa.n_scan_channels))
1156 num_channels = mvm->fw->ucode_capa.n_scan_channels;
1157
1158 if (iwl_mvm_is_cdb_supported(mvm)) {
1159 type = iwl_mvm_get_scan_type_band(mvm, NULL,
1160 NL80211_BAND_2GHZ);
1161 hb_type = iwl_mvm_get_scan_type_band(mvm, NULL,
1162 NL80211_BAND_5GHZ);
1163 if (type == mvm->scan_type && hb_type == mvm->hb_scan_type)
1164 return 0;
1165 } else {
1166 type = iwl_mvm_get_scan_type(mvm, NULL);
1167 if (type == mvm->scan_type)
1168 return 0;
1169 }
1170
1171 if (iwl_mvm_cdb_scan_api(mvm))
1172 cmd_size = sizeof(struct iwl_scan_config_v2);
1173 else
1174 cmd_size = sizeof(struct iwl_scan_config_v1);
1175 cmd_size += mvm->fw->ucode_capa.n_scan_channels;
1176
1177 cfg = kzalloc(cmd_size, GFP_KERNEL);
1178 if (!cfg)
1179 return -ENOMEM;
1180
1181 flags = SCAN_CONFIG_FLAG_ACTIVATE |
1182 SCAN_CONFIG_FLAG_ALLOW_CHUB_REQS |
1183 SCAN_CONFIG_FLAG_SET_TX_CHAINS |
1184 SCAN_CONFIG_FLAG_SET_RX_CHAINS |
1185 SCAN_CONFIG_FLAG_SET_AUX_STA_ID |
1186 SCAN_CONFIG_FLAG_SET_ALL_TIMES |
1187 SCAN_CONFIG_FLAG_SET_LEGACY_RATES |
1188 SCAN_CONFIG_FLAG_SET_MAC_ADDR |
1189 SCAN_CONFIG_FLAG_SET_CHANNEL_FLAGS |
1190 SCAN_CONFIG_N_CHANNELS(num_channels) |
1191 (iwl_mvm_is_scan_fragmented(type) ?
1192 SCAN_CONFIG_FLAG_SET_FRAGMENTED :
1193 SCAN_CONFIG_FLAG_CLEAR_FRAGMENTED);
1194
1195 channel_flags = IWL_CHANNEL_FLAG_EBS |
1196 IWL_CHANNEL_FLAG_ACCURATE_EBS |
1197 IWL_CHANNEL_FLAG_EBS_ADD |
1198 IWL_CHANNEL_FLAG_PRE_SCAN_PASSIVE2ACTIVE;
1199
1200 /*
1201 * Check for fragmented scan on LMAC2 - high band.
1202 * LMAC1 - low band is checked above.
1203 */
1204 if (iwl_mvm_cdb_scan_api(mvm)) {
1205 if (iwl_mvm_is_cdb_supported(mvm))
1206 flags |= (iwl_mvm_is_scan_fragmented(hb_type)) ?
1207 SCAN_CONFIG_FLAG_SET_LMAC2_FRAGMENTED :
1208 SCAN_CONFIG_FLAG_CLEAR_LMAC2_FRAGMENTED;
1209 iwl_mvm_fill_scan_config_v2(mvm, cfg, flags, channel_flags,
1210 num_channels);
1211 } else {
1212 iwl_mvm_fill_scan_config_v1(mvm, cfg, flags, channel_flags,
1213 num_channels);
1214 }
1215
1216 cmd.data[0] = cfg;
1217 cmd.len[0] = cmd_size;
1218 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
1219
1220 IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n");
1221
1222 ret = iwl_mvm_send_cmd(mvm, &cmd);
1223 if (!ret) {
1224 mvm->scan_type = type;
1225 mvm->hb_scan_type = hb_type;
1226 }
1227
1228 kfree(cfg);
1229 return ret;
1230}
1231
1232int iwl_mvm_config_scan(struct iwl_mvm *mvm)
1233{
1234 struct iwl_scan_config cfg;
1235 struct iwl_host_cmd cmd = {
1236 .id = WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_CFG_CMD),
1237 .len[0] = sizeof(cfg),
1238 .data[0] = &cfg,
1239 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1240 };
1241
1242 if (!iwl_mvm_is_reduced_config_scan_supported(mvm))
1243 return iwl_mvm_legacy_config_scan(mvm);
1244
1245 memset(&cfg, 0, sizeof(cfg));
1246
1247 if (iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA, 0) < 12) {
1248 cfg.bcast_sta_id = mvm->aux_sta.sta_id;
1249 } else if (iwl_fw_lookup_cmd_ver(mvm->fw, SCAN_CFG_CMD, 0) < 5) {
1250 /*
1251 * Fw doesn't use this sta anymore. Deprecated on SCAN_CFG_CMD
1252 * version 5.
1253 */
1254 cfg.bcast_sta_id = 0xff;
1255 }
1256
1257 cfg.tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm));
1258 cfg.rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm));
1259
1260 IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n");
1261
1262 return iwl_mvm_send_cmd(mvm, &cmd);
1263}
1264
1265static int iwl_mvm_scan_uid_by_status(struct iwl_mvm *mvm, int status)
1266{
1267 int i;
1268
1269 for (i = 0; i < mvm->max_scans; i++)
1270 if (mvm->scan_uid_status[i] == status)
1271 return i;
1272
1273 return -ENOENT;
1274}
1275
1276static void iwl_mvm_scan_umac_dwell(struct iwl_mvm *mvm,
1277 struct iwl_scan_req_umac *cmd,
1278 struct iwl_mvm_scan_params *params)
1279{
1280 struct iwl_mvm_scan_timing_params *timing, *hb_timing;
1281 u8 active_dwell, passive_dwell;
1282
1283 timing = &scan_timing[params->type];
1284 active_dwell = IWL_SCAN_DWELL_ACTIVE;
1285 passive_dwell = IWL_SCAN_DWELL_PASSIVE;
1286
1287 if (iwl_mvm_is_adaptive_dwell_supported(mvm)) {
1288 cmd->v7.adwell_default_n_aps_social =
1289 IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL;
1290 cmd->v7.adwell_default_n_aps =
1291 IWL_SCAN_ADWELL_DEFAULT_LB_N_APS;
1292
1293 if (iwl_mvm_is_adwell_hb_ap_num_supported(mvm))
1294 cmd->v9.adwell_default_hb_n_aps =
1295 IWL_SCAN_ADWELL_DEFAULT_HB_N_APS;
1296
1297 /* if custom max budget was configured with debugfs */
1298 if (IWL_MVM_ADWELL_MAX_BUDGET)
1299 cmd->v7.adwell_max_budget =
1300 cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET);
1301 else if (params->ssids && params->ssids[0].ssid_len)
1302 cmd->v7.adwell_max_budget =
1303 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN);
1304 else
1305 cmd->v7.adwell_max_budget =
1306 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN);
1307
1308 cmd->v7.scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1309 cmd->v7.max_out_time[SCAN_LB_LMAC_IDX] =
1310 cpu_to_le32(timing->max_out_time);
1311 cmd->v7.suspend_time[SCAN_LB_LMAC_IDX] =
1312 cpu_to_le32(timing->suspend_time);
1313
1314 if (iwl_mvm_is_cdb_supported(mvm)) {
1315 hb_timing = &scan_timing[params->hb_type];
1316
1317 cmd->v7.max_out_time[SCAN_HB_LMAC_IDX] =
1318 cpu_to_le32(hb_timing->max_out_time);
1319 cmd->v7.suspend_time[SCAN_HB_LMAC_IDX] =
1320 cpu_to_le32(hb_timing->suspend_time);
1321 }
1322
1323 if (!iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) {
1324 cmd->v7.active_dwell = active_dwell;
1325 cmd->v7.passive_dwell = passive_dwell;
1326 cmd->v7.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED;
1327 } else {
1328 cmd->v8.active_dwell[SCAN_LB_LMAC_IDX] = active_dwell;
1329 cmd->v8.passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell;
1330 if (iwl_mvm_is_cdb_supported(mvm)) {
1331 cmd->v8.active_dwell[SCAN_HB_LMAC_IDX] =
1332 active_dwell;
1333 cmd->v8.passive_dwell[SCAN_HB_LMAC_IDX] =
1334 passive_dwell;
1335 }
1336 }
1337 } else {
1338 cmd->v1.extended_dwell = IWL_SCAN_DWELL_EXTENDED;
1339 cmd->v1.active_dwell = active_dwell;
1340 cmd->v1.passive_dwell = passive_dwell;
1341 cmd->v1.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED;
1342
1343 if (iwl_mvm_is_cdb_supported(mvm)) {
1344 hb_timing = &scan_timing[params->hb_type];
1345
1346 cmd->v6.max_out_time[SCAN_HB_LMAC_IDX] =
1347 cpu_to_le32(hb_timing->max_out_time);
1348 cmd->v6.suspend_time[SCAN_HB_LMAC_IDX] =
1349 cpu_to_le32(hb_timing->suspend_time);
1350 }
1351
1352 if (iwl_mvm_cdb_scan_api(mvm)) {
1353 cmd->v6.scan_priority =
1354 cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1355 cmd->v6.max_out_time[SCAN_LB_LMAC_IDX] =
1356 cpu_to_le32(timing->max_out_time);
1357 cmd->v6.suspend_time[SCAN_LB_LMAC_IDX] =
1358 cpu_to_le32(timing->suspend_time);
1359 } else {
1360 cmd->v1.scan_priority =
1361 cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1362 cmd->v1.max_out_time =
1363 cpu_to_le32(timing->max_out_time);
1364 cmd->v1.suspend_time =
1365 cpu_to_le32(timing->suspend_time);
1366 }
1367 }
1368
1369 if (iwl_mvm_is_regular_scan(params))
1370 cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1371 else
1372 cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_2);
1373}
1374
1375static u32 iwl_mvm_scan_umac_ooc_priority(struct iwl_mvm_scan_params *params)
1376{
1377 return iwl_mvm_is_regular_scan(params) ?
1378 IWL_SCAN_PRIORITY_EXT_6 :
1379 IWL_SCAN_PRIORITY_EXT_2;
1380}
1381
1382static void
1383iwl_mvm_scan_umac_dwell_v11(struct iwl_mvm *mvm,
1384 struct iwl_scan_general_params_v11 *general_params,
1385 struct iwl_mvm_scan_params *params)
1386{
1387 struct iwl_mvm_scan_timing_params *timing, *hb_timing;
1388 u8 active_dwell, passive_dwell;
1389
1390 timing = &scan_timing[params->type];
1391 active_dwell = IWL_SCAN_DWELL_ACTIVE;
1392 passive_dwell = IWL_SCAN_DWELL_PASSIVE;
1393
1394 general_params->adwell_default_social_chn =
1395 IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL;
1396 general_params->adwell_default_2g = IWL_SCAN_ADWELL_DEFAULT_LB_N_APS;
1397 general_params->adwell_default_5g = IWL_SCAN_ADWELL_DEFAULT_HB_N_APS;
1398
1399 /* if custom max budget was configured with debugfs */
1400 if (IWL_MVM_ADWELL_MAX_BUDGET)
1401 general_params->adwell_max_budget =
1402 cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET);
1403 else if (params->ssids && params->ssids[0].ssid_len)
1404 general_params->adwell_max_budget =
1405 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN);
1406 else
1407 general_params->adwell_max_budget =
1408 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN);
1409
1410 general_params->scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1411 general_params->max_out_of_time[SCAN_LB_LMAC_IDX] =
1412 cpu_to_le32(timing->max_out_time);
1413 general_params->suspend_time[SCAN_LB_LMAC_IDX] =
1414 cpu_to_le32(timing->suspend_time);
1415
1416 hb_timing = &scan_timing[params->hb_type];
1417
1418 general_params->max_out_of_time[SCAN_HB_LMAC_IDX] =
1419 cpu_to_le32(hb_timing->max_out_time);
1420 general_params->suspend_time[SCAN_HB_LMAC_IDX] =
1421 cpu_to_le32(hb_timing->suspend_time);
1422
1423 general_params->active_dwell[SCAN_LB_LMAC_IDX] = active_dwell;
1424 general_params->passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell;
1425 general_params->active_dwell[SCAN_HB_LMAC_IDX] = active_dwell;
1426 general_params->passive_dwell[SCAN_HB_LMAC_IDX] = passive_dwell;
1427}
1428
1429struct iwl_mvm_scan_channel_segment {
1430 u8 start_idx;
1431 u8 end_idx;
1432 u8 first_channel_id;
1433 u8 last_channel_id;
1434 u8 channel_spacing_shift;
1435 u8 band;
1436};
1437
1438static const struct iwl_mvm_scan_channel_segment scan_channel_segments[] = {
1439 {
1440 .start_idx = 0,
1441 .end_idx = 13,
1442 .first_channel_id = 1,
1443 .last_channel_id = 14,
1444 .channel_spacing_shift = 0,
1445 .band = PHY_BAND_24
1446 },
1447 {
1448 .start_idx = 14,
1449 .end_idx = 41,
1450 .first_channel_id = 36,
1451 .last_channel_id = 144,
1452 .channel_spacing_shift = 2,
1453 .band = PHY_BAND_5
1454 },
1455 {
1456 .start_idx = 42,
1457 .end_idx = 50,
1458 .first_channel_id = 149,
1459 .last_channel_id = 181,
1460 .channel_spacing_shift = 2,
1461 .band = PHY_BAND_5
1462 },
1463 {
1464 .start_idx = 51,
1465 .end_idx = 111,
1466 .first_channel_id = 1,
1467 .last_channel_id = 241,
1468 .channel_spacing_shift = 2,
1469 .band = PHY_BAND_6
1470 },
1471};
1472
1473static int iwl_mvm_scan_ch_and_band_to_idx(u8 channel_id, u8 band)
1474{
1475 int i, index;
1476
1477 if (!channel_id)
1478 return -EINVAL;
1479
1480 for (i = 0; i < ARRAY_SIZE(scan_channel_segments); i++) {
1481 const struct iwl_mvm_scan_channel_segment *ch_segment =
1482 &scan_channel_segments[i];
1483 u32 ch_offset;
1484
1485 if (ch_segment->band != band ||
1486 ch_segment->first_channel_id > channel_id ||
1487 ch_segment->last_channel_id < channel_id)
1488 continue;
1489
1490 ch_offset = (channel_id - ch_segment->first_channel_id) >>
1491 ch_segment->channel_spacing_shift;
1492
1493 index = scan_channel_segments[i].start_idx + ch_offset;
1494 if (index < IWL_SCAN_NUM_CHANNELS)
1495 return index;
1496
1497 break;
1498 }
1499
1500 return -EINVAL;
1501}
1502
1503static const u8 p2p_go_friendly_chs[] = {
1504 36, 40, 44, 48, 149, 153, 157, 161, 165,
1505};
1506
1507static const u8 social_chs[] = {
1508 1, 6, 11
1509};
1510
1511static void iwl_mvm_scan_ch_add_n_aps_override(enum nl80211_iftype vif_type,
1512 u8 ch_id, u8 band, u8 *ch_bitmap,
1513 size_t bitmap_n_entries)
1514{
1515 int i;
1516
1517 if (vif_type != NL80211_IFTYPE_P2P_DEVICE)
1518 return;
1519
1520 for (i = 0; i < ARRAY_SIZE(p2p_go_friendly_chs); i++) {
1521 if (p2p_go_friendly_chs[i] == ch_id) {
1522 int ch_idx, bitmap_idx;
1523
1524 ch_idx = iwl_mvm_scan_ch_and_band_to_idx(ch_id, band);
1525 if (ch_idx < 0)
1526 return;
1527
1528 bitmap_idx = ch_idx / 8;
1529 if (bitmap_idx >= bitmap_n_entries)
1530 return;
1531
1532 ch_idx = ch_idx % 8;
1533 ch_bitmap[bitmap_idx] |= BIT(ch_idx);
1534
1535 return;
1536 }
1537 }
1538}
1539
1540static u32 iwl_mvm_scan_ch_n_aps_flag(enum nl80211_iftype vif_type, u8 ch_id)
1541{
1542 int i;
1543 u32 flags = 0;
1544
1545 if (vif_type != NL80211_IFTYPE_P2P_DEVICE)
1546 goto out;
1547
1548 for (i = 0; i < ARRAY_SIZE(p2p_go_friendly_chs); i++) {
1549 if (p2p_go_friendly_chs[i] == ch_id) {
1550 flags |= IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY_BIT;
1551 break;
1552 }
1553 }
1554
1555 if (flags)
1556 goto out;
1557
1558 for (i = 0; i < ARRAY_SIZE(social_chs); i++) {
1559 if (social_chs[i] == ch_id) {
1560 flags |= IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS_BIT;
1561 break;
1562 }
1563 }
1564
1565out:
1566 return flags;
1567}
1568
1569static void
1570iwl_mvm_umac_scan_cfg_channels(struct iwl_mvm *mvm,
1571 struct ieee80211_channel **channels,
1572 int n_channels, u32 flags,
1573 struct iwl_scan_channel_cfg_umac *channel_cfg)
1574{
1575 int i;
1576
1577 for (i = 0; i < n_channels; i++) {
1578 channel_cfg[i].flags = cpu_to_le32(flags);
1579 channel_cfg[i].v1.channel_num = channels[i]->hw_value;
1580 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) {
1581 enum nl80211_band band = channels[i]->band;
1582
1583 channel_cfg[i].v2.band =
1584 iwl_mvm_phy_band_from_nl80211(band);
1585 channel_cfg[i].v2.iter_count = 1;
1586 channel_cfg[i].v2.iter_interval = 0;
1587 } else {
1588 channel_cfg[i].v1.iter_count = 1;
1589 channel_cfg[i].v1.iter_interval = 0;
1590 }
1591 }
1592}
1593
1594static void
1595iwl_mvm_umac_scan_cfg_channels_v4(struct iwl_mvm *mvm,
1596 struct ieee80211_channel **channels,
1597 struct iwl_scan_channel_params_v4 *cp,
1598 int n_channels, u32 flags,
1599 enum nl80211_iftype vif_type)
1600{
1601 u8 *bitmap = cp->adwell_ch_override_bitmap;
1602 size_t bitmap_n_entries = ARRAY_SIZE(cp->adwell_ch_override_bitmap);
1603 int i;
1604
1605 for (i = 0; i < n_channels; i++) {
1606 enum nl80211_band band = channels[i]->band;
1607 struct iwl_scan_channel_cfg_umac *cfg =
1608 &cp->channel_config[i];
1609
1610 cfg->flags = cpu_to_le32(flags);
1611 cfg->v2.channel_num = channels[i]->hw_value;
1612 cfg->v2.band = iwl_mvm_phy_band_from_nl80211(band);
1613 cfg->v2.iter_count = 1;
1614 cfg->v2.iter_interval = 0;
1615
1616 iwl_mvm_scan_ch_add_n_aps_override(vif_type,
1617 cfg->v2.channel_num,
1618 cfg->v2.band, bitmap,
1619 bitmap_n_entries);
1620 }
1621}
1622
1623static void
1624iwl_mvm_umac_scan_cfg_channels_v6(struct iwl_mvm *mvm,
1625 struct ieee80211_channel **channels,
1626 struct iwl_scan_channel_params_v6 *cp,
1627 int n_channels, u32 flags,
1628 enum nl80211_iftype vif_type)
1629{
1630 int i;
1631
1632 for (i = 0; i < n_channels; i++) {
1633 enum nl80211_band band = channels[i]->band;
1634 struct iwl_scan_channel_cfg_umac *cfg = &cp->channel_config[i];
1635 u32 n_aps_flag =
1636 iwl_mvm_scan_ch_n_aps_flag(vif_type,
1637 channels[i]->hw_value);
1638
1639 cfg->flags = cpu_to_le32(flags | n_aps_flag);
1640 cfg->v2.channel_num = channels[i]->hw_value;
1641 cfg->v2.band = iwl_mvm_phy_band_from_nl80211(band);
1642 if (cfg80211_channel_is_psc(channels[i]))
1643 cfg->flags = 0;
1644 cfg->v2.iter_count = 1;
1645 cfg->v2.iter_interval = 0;
1646 }
1647}
1648
1649static void
1650iwl_mvm_umac_scan_fill_6g_chan_list(struct iwl_mvm *mvm,
1651 struct iwl_mvm_scan_params *params,
1652 struct iwl_scan_probe_params_v4 *pp)
1653{
1654 int j, idex_s = 0, idex_b = 0;
1655 struct cfg80211_scan_6ghz_params *scan_6ghz_params =
1656 params->scan_6ghz_params;
1657 bool hidden_supported = fw_has_capa(&mvm->fw->ucode_capa,
1658 IWL_UCODE_TLV_CAPA_HIDDEN_6GHZ_SCAN);
1659
1660 for (j = 0; j < params->n_ssids && idex_s < SCAN_SHORT_SSID_MAX_SIZE;
1661 j++) {
1662 if (!params->ssids[j].ssid_len)
1663 continue;
1664
1665 pp->short_ssid[idex_s] =
1666 cpu_to_le32(~crc32_le(~0, params->ssids[j].ssid,
1667 params->ssids[j].ssid_len));
1668
1669 if (hidden_supported) {
1670 pp->direct_scan[idex_s].id = WLAN_EID_SSID;
1671 pp->direct_scan[idex_s].len = params->ssids[j].ssid_len;
1672 memcpy(pp->direct_scan[idex_s].ssid, params->ssids[j].ssid,
1673 params->ssids[j].ssid_len);
1674 }
1675 idex_s++;
1676 }
1677
1678 /*
1679 * Populate the arrays of the short SSIDs and the BSSIDs using the 6GHz
1680 * collocated parameters. This might not be optimal, as this processing
1681 * does not (yet) correspond to the actual channels, so it is possible
1682 * that some entries would be left out.
1683 *
1684 * TODO: improve this logic.
1685 */
1686 for (j = 0; j < params->n_6ghz_params; j++) {
1687 int k;
1688
1689 /* First, try to place the short SSID */
1690 if (scan_6ghz_params[j].short_ssid_valid) {
1691 for (k = 0; k < idex_s; k++) {
1692 if (pp->short_ssid[k] ==
1693 cpu_to_le32(scan_6ghz_params[j].short_ssid))
1694 break;
1695 }
1696
1697 if (k == idex_s && idex_s < SCAN_SHORT_SSID_MAX_SIZE) {
1698 pp->short_ssid[idex_s++] =
1699 cpu_to_le32(scan_6ghz_params[j].short_ssid);
1700 }
1701 }
1702
1703 /* try to place BSSID for the same entry */
1704 for (k = 0; k < idex_b; k++) {
1705 if (!memcmp(&pp->bssid_array[k],
1706 scan_6ghz_params[j].bssid, ETH_ALEN))
1707 break;
1708 }
1709
1710 if (k == idex_b && idex_b < SCAN_BSSID_MAX_SIZE) {
1711 memcpy(&pp->bssid_array[idex_b++],
1712 scan_6ghz_params[j].bssid, ETH_ALEN);
1713 }
1714 }
1715
1716 pp->short_ssid_num = idex_s;
1717 pp->bssid_num = idex_b;
1718}
1719
1720/* TODO: this function can be merged with iwl_mvm_scan_umac_fill_ch_p_v6 */
1721static u32
1722iwl_mvm_umac_scan_cfg_channels_v6_6g(struct iwl_mvm *mvm,
1723 struct iwl_mvm_scan_params *params,
1724 u32 n_channels,
1725 struct iwl_scan_probe_params_v4 *pp,
1726 struct iwl_scan_channel_params_v6 *cp,
1727 enum nl80211_iftype vif_type)
1728{
1729 int i;
1730 struct cfg80211_scan_6ghz_params *scan_6ghz_params =
1731 params->scan_6ghz_params;
1732 u32 ch_cnt;
1733
1734 for (i = 0, ch_cnt = 0; i < params->n_channels; i++) {
1735 struct iwl_scan_channel_cfg_umac *cfg =
1736 &cp->channel_config[ch_cnt];
1737
1738 u32 s_ssid_bitmap = 0, bssid_bitmap = 0, flags = 0;
1739 u8 j, k, s_max = 0, b_max = 0, n_used_bssid_entries;
1740 bool force_passive, found = false, allow_passive = true,
1741 unsolicited_probe_on_chan = false, psc_no_listen = false;
1742
1743 /*
1744 * Avoid performing passive scan on non PSC channels unless the
1745 * scan is specifically a passive scan, i.e., no SSIDs
1746 * configured in the scan command.
1747 */
1748 if (!cfg80211_channel_is_psc(params->channels[i]) &&
1749 !params->n_6ghz_params && params->n_ssids)
1750 continue;
1751
1752 cfg->v1.channel_num = params->channels[i]->hw_value;
1753 cfg->v2.band = 2;
1754 cfg->v2.iter_count = 1;
1755 cfg->v2.iter_interval = 0;
1756
1757 /*
1758 * The optimize the scan time, i.e., reduce the scan dwell time
1759 * on each channel, the below logic tries to set 3 direct BSSID
1760 * probe requests for each broadcast probe request with a short
1761 * SSID.
1762 * TODO: improve this logic
1763 */
1764 n_used_bssid_entries = 3;
1765 for (j = 0; j < params->n_6ghz_params; j++) {
1766 if (!(scan_6ghz_params[j].channel_idx == i))
1767 continue;
1768
1769 found = false;
1770 unsolicited_probe_on_chan |=
1771 scan_6ghz_params[j].unsolicited_probe;
1772 psc_no_listen |= scan_6ghz_params[j].psc_no_listen;
1773
1774 for (k = 0; k < pp->short_ssid_num; k++) {
1775 if (!scan_6ghz_params[j].unsolicited_probe &&
1776 le32_to_cpu(pp->short_ssid[k]) ==
1777 scan_6ghz_params[j].short_ssid) {
1778 /* Relevant short SSID bit set */
1779 if (s_ssid_bitmap & BIT(k)) {
1780 found = true;
1781 break;
1782 }
1783
1784 /*
1785 * Use short SSID only to create a new
1786 * iteration during channel dwell or in
1787 * case that the short SSID has a
1788 * matching SSID, i.e., scan for hidden
1789 * APs.
1790 */
1791 if (n_used_bssid_entries >= 3) {
1792 s_ssid_bitmap |= BIT(k);
1793 s_max++;
1794 n_used_bssid_entries -= 3;
1795 found = true;
1796 break;
1797 } else if (pp->direct_scan[k].len) {
1798 s_ssid_bitmap |= BIT(k);
1799 s_max++;
1800 found = true;
1801 allow_passive = false;
1802 break;
1803 }
1804 }
1805 }
1806
1807 if (found)
1808 continue;
1809
1810 for (k = 0; k < pp->bssid_num; k++) {
1811 if (!memcmp(&pp->bssid_array[k],
1812 scan_6ghz_params[j].bssid,
1813 ETH_ALEN)) {
1814 if (!(bssid_bitmap & BIT(k))) {
1815 bssid_bitmap |= BIT(k);
1816 b_max++;
1817 n_used_bssid_entries++;
1818 }
1819 break;
1820 }
1821 }
1822 }
1823
1824 if (cfg80211_channel_is_psc(params->channels[i]) &&
1825 psc_no_listen)
1826 flags |= IWL_UHB_CHAN_CFG_FLAG_PSC_CHAN_NO_LISTEN;
1827
1828 if (unsolicited_probe_on_chan)
1829 flags |= IWL_UHB_CHAN_CFG_FLAG_UNSOLICITED_PROBE_RES;
1830
1831 /*
1832 * In the following cases apply passive scan:
1833 * 1. Non fragmented scan:
1834 * - PSC channel with NO_LISTEN_FLAG on should be treated
1835 * like non PSC channel
1836 * - Non PSC channel with more than 3 short SSIDs or more
1837 * than 9 BSSIDs.
1838 * - Non PSC Channel with unsolicited probe response and
1839 * more than 2 short SSIDs or more than 6 BSSIDs.
1840 * - PSC channel with more than 2 short SSIDs or more than
1841 * 6 BSSIDs.
1842 * 3. Fragmented scan:
1843 * - PSC channel with more than 1 SSID or 3 BSSIDs.
1844 * - Non PSC channel with more than 2 SSIDs or 6 BSSIDs.
1845 * - Non PSC channel with unsolicited probe response and
1846 * more than 1 SSID or more than 3 BSSIDs.
1847 */
1848 if (!iwl_mvm_is_scan_fragmented(params->type)) {
1849 if (!cfg80211_channel_is_psc(params->channels[i]) ||
1850 flags & IWL_UHB_CHAN_CFG_FLAG_PSC_CHAN_NO_LISTEN) {
1851 force_passive = (s_max > 3 || b_max > 9);
1852 force_passive |= (unsolicited_probe_on_chan &&
1853 (s_max > 2 || b_max > 6));
1854 } else {
1855 force_passive = (s_max > 2 || b_max > 6);
1856 }
1857 } else if (cfg80211_channel_is_psc(params->channels[i])) {
1858 force_passive = (s_max > 1 || b_max > 3);
1859 } else {
1860 force_passive = (s_max > 2 || b_max > 6);
1861 force_passive |= (unsolicited_probe_on_chan &&
1862 (s_max > 1 || b_max > 3));
1863 }
1864 if ((allow_passive && force_passive) ||
1865 (!(bssid_bitmap | s_ssid_bitmap) &&
1866 !cfg80211_channel_is_psc(params->channels[i])))
1867 flags |= IWL_UHB_CHAN_CFG_FLAG_FORCE_PASSIVE;
1868 else
1869 flags |= bssid_bitmap | (s_ssid_bitmap << 16);
1870
1871 cfg->flags |= cpu_to_le32(flags);
1872 ch_cnt++;
1873 }
1874
1875 if (params->n_channels > ch_cnt)
1876 IWL_DEBUG_SCAN(mvm,
1877 "6GHz: reducing number channels: (%u->%u)\n",
1878 params->n_channels, ch_cnt);
1879
1880 return ch_cnt;
1881}
1882
1883static u8 iwl_mvm_scan_umac_chan_flags_v2(struct iwl_mvm *mvm,
1884 struct iwl_mvm_scan_params *params,
1885 struct ieee80211_vif *vif)
1886{
1887 u8 flags = 0;
1888
1889 flags |= IWL_SCAN_CHANNEL_FLAG_ENABLE_CHAN_ORDER;
1890
1891 if (iwl_mvm_scan_use_ebs(mvm, vif))
1892 flags |= IWL_SCAN_CHANNEL_FLAG_EBS |
1893 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
1894 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD;
1895
1896 /* set fragmented ebs for fragmented scan on HB channels */
1897 if ((!iwl_mvm_is_cdb_supported(mvm) &&
1898 iwl_mvm_is_scan_fragmented(params->type)) ||
1899 (iwl_mvm_is_cdb_supported(mvm) &&
1900 iwl_mvm_is_scan_fragmented(params->hb_type)))
1901 flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG;
1902
1903 /*
1904 * force EBS in case the scan is a fragmented and there is a need to take P2P
1905 * GO operation into consideration during scan operation.
1906 */
1907 if ((!iwl_mvm_is_cdb_supported(mvm) &&
1908 iwl_mvm_is_scan_fragmented(params->type) && params->respect_p2p_go) ||
1909 (iwl_mvm_is_cdb_supported(mvm) &&
1910 iwl_mvm_is_scan_fragmented(params->hb_type) &&
1911 params->respect_p2p_go_hb)) {
1912 IWL_DEBUG_SCAN(mvm, "Respect P2P GO. Force EBS\n");
1913 flags |= IWL_SCAN_CHANNEL_FLAG_FORCE_EBS;
1914 }
1915
1916 return flags;
1917}
1918
1919static void iwl_mvm_scan_6ghz_passive_scan(struct iwl_mvm *mvm,
1920 struct iwl_mvm_scan_params *params,
1921 struct ieee80211_vif *vif)
1922{
1923 struct ieee80211_supported_band *sband =
1924 &mvm->nvm_data->bands[NL80211_BAND_6GHZ];
1925 u32 n_disabled, i;
1926
1927 params->enable_6ghz_passive = false;
1928
1929 if (params->scan_6ghz)
1930 return;
1931
1932 if (!fw_has_capa(&mvm->fw->ucode_capa,
1933 IWL_UCODE_TLV_CAPA_PASSIVE_6GHZ_SCAN)) {
1934 IWL_DEBUG_SCAN(mvm,
1935 "6GHz passive scan: Not supported by FW\n");
1936 return;
1937 }
1938
1939 /* 6GHz passive scan allowed only on station interface */
1940 if (vif->type != NL80211_IFTYPE_STATION) {
1941 IWL_DEBUG_SCAN(mvm,
1942 "6GHz passive scan: not station interface\n");
1943 return;
1944 }
1945
1946 /*
1947 * 6GHz passive scan is allowed in a defined time interval following HW
1948 * reset or resume flow, or while not associated and a large interval
1949 * has passed since the last 6GHz passive scan.
1950 */
1951 if ((vif->cfg.assoc ||
1952 time_after(mvm->last_6ghz_passive_scan_jiffies +
1953 (IWL_MVM_6GHZ_PASSIVE_SCAN_TIMEOUT * HZ), jiffies)) &&
1954 (time_before(mvm->last_reset_or_resume_time_jiffies +
1955 (IWL_MVM_6GHZ_PASSIVE_SCAN_ASSOC_TIMEOUT * HZ),
1956 jiffies))) {
1957 IWL_DEBUG_SCAN(mvm, "6GHz passive scan: %s\n",
1958 vif->cfg.assoc ? "associated" :
1959 "timeout did not expire");
1960 return;
1961 }
1962
1963 /* not enough channels in the regular scan request */
1964 if (params->n_channels < IWL_MVM_6GHZ_PASSIVE_SCAN_MIN_CHANS) {
1965 IWL_DEBUG_SCAN(mvm,
1966 "6GHz passive scan: not enough channels\n");
1967 return;
1968 }
1969
1970 for (i = 0; i < params->n_ssids; i++) {
1971 if (!params->ssids[i].ssid_len)
1972 break;
1973 }
1974
1975 /* not a wildcard scan, so cannot enable passive 6GHz scan */
1976 if (i == params->n_ssids) {
1977 IWL_DEBUG_SCAN(mvm,
1978 "6GHz passive scan: no wildcard SSID\n");
1979 return;
1980 }
1981
1982 if (!sband || !sband->n_channels) {
1983 IWL_DEBUG_SCAN(mvm,
1984 "6GHz passive scan: no 6GHz channels\n");
1985 return;
1986 }
1987
1988 for (i = 0, n_disabled = 0; i < sband->n_channels; i++) {
1989 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED))
1990 n_disabled++;
1991 }
1992
1993 /*
1994 * Not all the 6GHz channels are disabled, so no need for 6GHz passive
1995 * scan
1996 */
1997 if (n_disabled != sband->n_channels) {
1998 IWL_DEBUG_SCAN(mvm,
1999 "6GHz passive scan: 6GHz channels enabled\n");
2000 return;
2001 }
2002
2003 /* all conditions to enable 6ghz passive scan are satisfied */
2004 IWL_DEBUG_SCAN(mvm, "6GHz passive scan: can be enabled\n");
2005 params->enable_6ghz_passive = true;
2006}
2007
2008static u16 iwl_mvm_scan_umac_flags_v2(struct iwl_mvm *mvm,
2009 struct iwl_mvm_scan_params *params,
2010 struct ieee80211_vif *vif,
2011 int type)
2012{
2013 u16 flags = 0;
2014
2015 /*
2016 * If no direct SSIDs are provided perform a passive scan. Otherwise,
2017 * if there is a single SSID which is not the broadcast SSID, assume
2018 * that the scan is intended for roaming purposes and thus enable Rx on
2019 * all chains to improve chances of hearing the beacons/probe responses.
2020 */
2021 if (params->n_ssids == 0)
2022 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FORCE_PASSIVE;
2023 else if (params->n_ssids == 1 && params->ssids[0].ssid_len)
2024 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_USE_ALL_RX_CHAINS;
2025
2026 if (iwl_mvm_is_scan_fragmented(params->type))
2027 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1;
2028
2029 if (iwl_mvm_is_scan_fragmented(params->hb_type))
2030 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC2;
2031
2032 if (params->pass_all)
2033 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PASS_ALL;
2034 else
2035 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_MATCH;
2036
2037 if (!iwl_mvm_is_regular_scan(params))
2038 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PERIODIC;
2039
2040 if (params->iter_notif ||
2041 mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED)
2042 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_NTFY_ITER_COMPLETE;
2043
2044 if (IWL_MVM_ADWELL_ENABLE)
2045 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_ADAPTIVE_DWELL;
2046
2047 if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT)
2048 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PREEMPTIVE;
2049
2050 if ((type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) &&
2051 params->flags & NL80211_SCAN_FLAG_COLOCATED_6GHZ)
2052 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_TRIGGER_UHB_SCAN;
2053
2054 if (params->enable_6ghz_passive)
2055 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_6GHZ_PASSIVE_SCAN;
2056
2057 if (iwl_mvm_is_oce_supported(mvm) &&
2058 (params->flags & (NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP |
2059 NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE |
2060 NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME)))
2061 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_OCE;
2062
2063 return flags;
2064}
2065
2066static u8 iwl_mvm_scan_umac_flags2(struct iwl_mvm *mvm,
2067 struct iwl_mvm_scan_params *params,
2068 struct ieee80211_vif *vif, int type)
2069{
2070 u8 flags = 0;
2071
2072 if (iwl_mvm_is_cdb_supported(mvm)) {
2073 if (params->respect_p2p_go)
2074 flags |= IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_LB;
2075 if (params->respect_p2p_go_hb)
2076 flags |= IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_HB;
2077 } else {
2078 if (params->respect_p2p_go)
2079 flags = IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_LB |
2080 IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_HB;
2081 }
2082
2083 return flags;
2084}
2085
2086static u16 iwl_mvm_scan_umac_flags(struct iwl_mvm *mvm,
2087 struct iwl_mvm_scan_params *params,
2088 struct ieee80211_vif *vif)
2089{
2090 u16 flags = 0;
2091
2092 if (params->n_ssids == 0)
2093 flags = IWL_UMAC_SCAN_GEN_FLAGS_PASSIVE;
2094
2095 if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0)
2096 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PRE_CONNECT;
2097
2098 if (iwl_mvm_is_scan_fragmented(params->type))
2099 flags |= IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED;
2100
2101 if (iwl_mvm_is_cdb_supported(mvm) &&
2102 iwl_mvm_is_scan_fragmented(params->hb_type))
2103 flags |= IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED;
2104
2105 if (iwl_mvm_rrm_scan_needed(mvm) &&
2106 fw_has_capa(&mvm->fw->ucode_capa,
2107 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
2108 flags |= IWL_UMAC_SCAN_GEN_FLAGS_RRM_ENABLED;
2109
2110 if (params->pass_all)
2111 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PASS_ALL;
2112 else
2113 flags |= IWL_UMAC_SCAN_GEN_FLAGS_MATCH;
2114
2115 if (!iwl_mvm_is_regular_scan(params))
2116 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PERIODIC;
2117
2118 if (params->iter_notif)
2119 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE;
2120
2121#ifdef CONFIG_IWLWIFI_DEBUGFS
2122 if (mvm->scan_iter_notif_enabled)
2123 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE;
2124#endif
2125
2126 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED)
2127 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE;
2128
2129 if (iwl_mvm_is_adaptive_dwell_supported(mvm) && IWL_MVM_ADWELL_ENABLE)
2130 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ADAPTIVE_DWELL;
2131
2132 /*
2133 * Extended dwell is relevant only for low band to start with, as it is
2134 * being used for social channles only (1, 6, 11), so we can check
2135 * only scan type on low band also for CDB.
2136 */
2137 if (iwl_mvm_is_regular_scan(params) &&
2138 vif->type != NL80211_IFTYPE_P2P_DEVICE &&
2139 !iwl_mvm_is_scan_fragmented(params->type) &&
2140 !iwl_mvm_is_adaptive_dwell_supported(mvm) &&
2141 !iwl_mvm_is_oce_supported(mvm))
2142 flags |= IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL;
2143
2144 if (iwl_mvm_is_oce_supported(mvm)) {
2145 if ((params->flags &
2146 NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE))
2147 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_HIGH_TX_RATE;
2148 /* Since IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL and
2149 * NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION shares
2150 * the same bit, we need to make sure that we use this bit here
2151 * only when IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL cannot be
2152 * used. */
2153 if ((params->flags &
2154 NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) &&
2155 !WARN_ON_ONCE(!iwl_mvm_is_adaptive_dwell_supported(mvm)))
2156 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_DEFER_SUPP;
2157 if ((params->flags & NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME))
2158 flags |= IWL_UMAC_SCAN_GEN_FLAGS_MAX_CHNL_TIME;
2159 }
2160
2161 return flags;
2162}
2163
2164static int
2165iwl_mvm_fill_scan_sched_params(struct iwl_mvm_scan_params *params,
2166 struct iwl_scan_umac_schedule *schedule,
2167 __le16 *delay)
2168{
2169 int i;
2170 if (WARN_ON(!params->n_scan_plans ||
2171 params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS))
2172 return -EINVAL;
2173
2174 for (i = 0; i < params->n_scan_plans; i++) {
2175 struct cfg80211_sched_scan_plan *scan_plan =
2176 ¶ms->scan_plans[i];
2177
2178 schedule[i].iter_count = scan_plan->iterations;
2179 schedule[i].interval =
2180 cpu_to_le16(scan_plan->interval);
2181 }
2182
2183 /*
2184 * If the number of iterations of the last scan plan is set to
2185 * zero, it should run infinitely. However, this is not always the case.
2186 * For example, when regular scan is requested the driver sets one scan
2187 * plan with one iteration.
2188 */
2189 if (!schedule[params->n_scan_plans - 1].iter_count)
2190 schedule[params->n_scan_plans - 1].iter_count = 0xff;
2191
2192 *delay = cpu_to_le16(params->delay);
2193
2194 return 0;
2195}
2196
2197static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2198 struct iwl_mvm_scan_params *params,
2199 int type, int uid)
2200{
2201 struct iwl_scan_req_umac *cmd = mvm->scan_cmd;
2202 struct iwl_scan_umac_chan_param *chan_param;
2203 void *cmd_data = iwl_mvm_get_scan_req_umac_data(mvm);
2204 void *sec_part = (u8 *)cmd_data + sizeof(struct iwl_scan_channel_cfg_umac) *
2205 mvm->fw->ucode_capa.n_scan_channels;
2206 struct iwl_scan_req_umac_tail_v2 *tail_v2 =
2207 (struct iwl_scan_req_umac_tail_v2 *)sec_part;
2208 struct iwl_scan_req_umac_tail_v1 *tail_v1;
2209 struct iwl_ssid_ie *direct_scan;
2210 int ret = 0;
2211 u32 ssid_bitmap = 0;
2212 u8 channel_flags = 0;
2213 u16 gen_flags;
2214 struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif);
2215
2216 chan_param = iwl_mvm_get_scan_req_umac_channel(mvm);
2217
2218 iwl_mvm_scan_umac_dwell(mvm, cmd, params);
2219
2220 mvm->scan_uid_status[uid] = type;
2221
2222 cmd->uid = cpu_to_le32(uid);
2223 gen_flags = iwl_mvm_scan_umac_flags(mvm, params, vif);
2224 cmd->general_flags = cpu_to_le16(gen_flags);
2225 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) {
2226 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED)
2227 cmd->v8.num_of_fragments[SCAN_LB_LMAC_IDX] =
2228 IWL_SCAN_NUM_OF_FRAGS;
2229 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED)
2230 cmd->v8.num_of_fragments[SCAN_HB_LMAC_IDX] =
2231 IWL_SCAN_NUM_OF_FRAGS;
2232
2233 cmd->v8.general_flags2 =
2234 IWL_UMAC_SCAN_GEN_FLAGS2_ALLOW_CHNL_REORDER;
2235 }
2236
2237 cmd->scan_start_mac_id = scan_vif->id;
2238
2239 if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT)
2240 cmd->flags = cpu_to_le32(IWL_UMAC_SCAN_FLAG_PREEMPTIVE);
2241
2242 if (iwl_mvm_scan_use_ebs(mvm, vif)) {
2243 channel_flags = IWL_SCAN_CHANNEL_FLAG_EBS |
2244 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
2245 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD;
2246
2247 /* set fragmented ebs for fragmented scan on HB channels */
2248 if (iwl_mvm_is_frag_ebs_supported(mvm)) {
2249 if (gen_flags &
2250 IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED ||
2251 (!iwl_mvm_is_cdb_supported(mvm) &&
2252 gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED))
2253 channel_flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG;
2254 }
2255 }
2256
2257 chan_param->flags = channel_flags;
2258 chan_param->count = params->n_channels;
2259
2260 ret = iwl_mvm_fill_scan_sched_params(params, tail_v2->schedule,
2261 &tail_v2->delay);
2262 if (ret) {
2263 mvm->scan_uid_status[uid] = 0;
2264 return ret;
2265 }
2266
2267 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) {
2268 tail_v2->preq = params->preq;
2269 direct_scan = tail_v2->direct_scan;
2270 } else {
2271 tail_v1 = (struct iwl_scan_req_umac_tail_v1 *)sec_part;
2272 iwl_mvm_scan_set_legacy_probe_req(&tail_v1->preq,
2273 ¶ms->preq);
2274 direct_scan = tail_v1->direct_scan;
2275 }
2276 iwl_scan_build_ssids(params, direct_scan, &ssid_bitmap);
2277 iwl_mvm_umac_scan_cfg_channels(mvm, params->channels,
2278 params->n_channels, ssid_bitmap,
2279 cmd_data);
2280 return 0;
2281}
2282
2283static void
2284iwl_mvm_scan_umac_fill_general_p_v11(struct iwl_mvm *mvm,
2285 struct iwl_mvm_scan_params *params,
2286 struct ieee80211_vif *vif,
2287 struct iwl_scan_general_params_v11 *gp,
2288 u16 gen_flags, u8 gen_flags2)
2289{
2290 struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif);
2291
2292 iwl_mvm_scan_umac_dwell_v11(mvm, gp, params);
2293
2294 IWL_DEBUG_SCAN(mvm, "Gerenal: flags=0x%x, flags2=0x%x\n",
2295 gen_flags, gen_flags2);
2296
2297 gp->flags = cpu_to_le16(gen_flags);
2298 gp->flags2 = gen_flags2;
2299
2300 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1)
2301 gp->num_of_fragments[SCAN_LB_LMAC_IDX] = IWL_SCAN_NUM_OF_FRAGS;
2302 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC2)
2303 gp->num_of_fragments[SCAN_HB_LMAC_IDX] = IWL_SCAN_NUM_OF_FRAGS;
2304
2305 gp->scan_start_mac_id = scan_vif->id;
2306}
2307
2308static void
2309iwl_mvm_scan_umac_fill_probe_p_v3(struct iwl_mvm_scan_params *params,
2310 struct iwl_scan_probe_params_v3 *pp)
2311{
2312 pp->preq = params->preq;
2313 pp->ssid_num = params->n_ssids;
2314 iwl_scan_build_ssids(params, pp->direct_scan, NULL);
2315}
2316
2317static void
2318iwl_mvm_scan_umac_fill_probe_p_v4(struct iwl_mvm_scan_params *params,
2319 struct iwl_scan_probe_params_v4 *pp,
2320 u32 *bitmap_ssid)
2321{
2322 pp->preq = params->preq;
2323 iwl_scan_build_ssids(params, pp->direct_scan, bitmap_ssid);
2324}
2325
2326static void
2327iwl_mvm_scan_umac_fill_ch_p_v4(struct iwl_mvm *mvm,
2328 struct iwl_mvm_scan_params *params,
2329 struct ieee80211_vif *vif,
2330 struct iwl_scan_channel_params_v4 *cp,
2331 u32 channel_cfg_flags)
2332{
2333 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif);
2334 cp->count = params->n_channels;
2335 cp->num_of_aps_override = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY;
2336
2337 iwl_mvm_umac_scan_cfg_channels_v4(mvm, params->channels, cp,
2338 params->n_channels,
2339 channel_cfg_flags,
2340 vif->type);
2341}
2342
2343static void
2344iwl_mvm_scan_umac_fill_ch_p_v6(struct iwl_mvm *mvm,
2345 struct iwl_mvm_scan_params *params,
2346 struct ieee80211_vif *vif,
2347 struct iwl_scan_channel_params_v6 *cp,
2348 u32 channel_cfg_flags)
2349{
2350 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif);
2351 cp->count = params->n_channels;
2352 cp->n_aps_override[0] = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY;
2353 cp->n_aps_override[1] = IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS;
2354
2355 iwl_mvm_umac_scan_cfg_channels_v6(mvm, params->channels, cp,
2356 params->n_channels,
2357 channel_cfg_flags,
2358 vif->type);
2359
2360 if (params->enable_6ghz_passive) {
2361 struct ieee80211_supported_band *sband =
2362 &mvm->nvm_data->bands[NL80211_BAND_6GHZ];
2363 u32 i;
2364
2365 for (i = 0; i < sband->n_channels; i++) {
2366 struct ieee80211_channel *channel =
2367 &sband->channels[i];
2368
2369 struct iwl_scan_channel_cfg_umac *cfg =
2370 &cp->channel_config[cp->count];
2371
2372 if (!cfg80211_channel_is_psc(channel))
2373 continue;
2374
2375 cfg->flags = 0;
2376 cfg->v2.channel_num = channel->hw_value;
2377 cfg->v2.band = PHY_BAND_6;
2378 cfg->v2.iter_count = 1;
2379 cfg->v2.iter_interval = 0;
2380 cp->count++;
2381 }
2382 }
2383}
2384
2385static int iwl_mvm_scan_umac_v12(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2386 struct iwl_mvm_scan_params *params, int type,
2387 int uid)
2388{
2389 struct iwl_scan_req_umac_v12 *cmd = mvm->scan_cmd;
2390 struct iwl_scan_req_params_v12 *scan_p = &cmd->scan_params;
2391 int ret;
2392 u16 gen_flags;
2393
2394 mvm->scan_uid_status[uid] = type;
2395
2396 cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(params));
2397 cmd->uid = cpu_to_le32(uid);
2398
2399 gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type);
2400 iwl_mvm_scan_umac_fill_general_p_v11(mvm, params, vif,
2401 &scan_p->general_params,
2402 gen_flags, 0);
2403
2404 ret = iwl_mvm_fill_scan_sched_params(params,
2405 scan_p->periodic_params.schedule,
2406 &scan_p->periodic_params.delay);
2407 if (ret)
2408 return ret;
2409
2410 iwl_mvm_scan_umac_fill_probe_p_v3(params, &scan_p->probe_params);
2411 iwl_mvm_scan_umac_fill_ch_p_v4(mvm, params, vif,
2412 &scan_p->channel_params, 0);
2413
2414 return 0;
2415}
2416
2417static int iwl_mvm_scan_umac_v14_and_above(struct iwl_mvm *mvm,
2418 struct ieee80211_vif *vif,
2419 struct iwl_mvm_scan_params *params,
2420 int type, int uid, u32 version)
2421{
2422 struct iwl_scan_req_umac_v15 *cmd = mvm->scan_cmd;
2423 struct iwl_scan_req_params_v15 *scan_p = &cmd->scan_params;
2424 struct iwl_scan_channel_params_v6 *cp = &scan_p->channel_params;
2425 struct iwl_scan_probe_params_v4 *pb = &scan_p->probe_params;
2426 int ret;
2427 u16 gen_flags;
2428 u8 gen_flags2;
2429 u32 bitmap_ssid = 0;
2430
2431 mvm->scan_uid_status[uid] = type;
2432
2433 cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(params));
2434 cmd->uid = cpu_to_le32(uid);
2435
2436 gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type);
2437
2438 if (version >= 15)
2439 gen_flags2 = iwl_mvm_scan_umac_flags2(mvm, params, vif, type);
2440 else
2441 gen_flags2 = 0;
2442
2443 iwl_mvm_scan_umac_fill_general_p_v11(mvm, params, vif,
2444 &scan_p->general_params,
2445 gen_flags, gen_flags2);
2446
2447 ret = iwl_mvm_fill_scan_sched_params(params,
2448 scan_p->periodic_params.schedule,
2449 &scan_p->periodic_params.delay);
2450 if (ret)
2451 return ret;
2452
2453 if (!params->scan_6ghz) {
2454 iwl_mvm_scan_umac_fill_probe_p_v4(params, &scan_p->probe_params,
2455 &bitmap_ssid);
2456 iwl_mvm_scan_umac_fill_ch_p_v6(mvm, params, vif,
2457 &scan_p->channel_params, bitmap_ssid);
2458
2459 return 0;
2460 } else {
2461 pb->preq = params->preq;
2462 }
2463
2464 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif);
2465 cp->n_aps_override[0] = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY;
2466 cp->n_aps_override[1] = IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS;
2467
2468 iwl_mvm_umac_scan_fill_6g_chan_list(mvm, params, pb);
2469
2470 cp->count = iwl_mvm_umac_scan_cfg_channels_v6_6g(mvm, params,
2471 params->n_channels,
2472 pb, cp, vif->type);
2473 if (!cp->count) {
2474 mvm->scan_uid_status[uid] = 0;
2475 return -EINVAL;
2476 }
2477
2478 if (!params->n_ssids ||
2479 (params->n_ssids == 1 && !params->ssids[0].ssid_len))
2480 cp->flags |= IWL_SCAN_CHANNEL_FLAG_6G_PSC_NO_FILTER;
2481
2482 return 0;
2483}
2484
2485static int iwl_mvm_scan_umac_v14(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2486 struct iwl_mvm_scan_params *params, int type,
2487 int uid)
2488{
2489 return iwl_mvm_scan_umac_v14_and_above(mvm, vif, params, type, uid, 14);
2490}
2491
2492static int iwl_mvm_scan_umac_v15(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2493 struct iwl_mvm_scan_params *params, int type,
2494 int uid)
2495{
2496 return iwl_mvm_scan_umac_v14_and_above(mvm, vif, params, type, uid, 15);
2497}
2498
2499static int iwl_mvm_num_scans(struct iwl_mvm *mvm)
2500{
2501 return hweight32(mvm->scan_status & IWL_MVM_SCAN_MASK);
2502}
2503
2504static int iwl_mvm_check_running_scans(struct iwl_mvm *mvm, int type)
2505{
2506 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
2507 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
2508
2509 /* This looks a bit arbitrary, but the idea is that if we run
2510 * out of possible simultaneous scans and the userspace is
2511 * trying to run a scan type that is already running, we
2512 * return -EBUSY. But if the userspace wants to start a
2513 * different type of scan, we stop the opposite type to make
2514 * space for the new request. The reason is backwards
2515 * compatibility with old wpa_supplicant that wouldn't stop a
2516 * scheduled scan before starting a normal scan.
2517 */
2518
2519 /* FW supports only a single periodic scan */
2520 if ((type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) &&
2521 mvm->scan_status & (IWL_MVM_SCAN_SCHED | IWL_MVM_SCAN_NETDETECT))
2522 return -EBUSY;
2523
2524 if (iwl_mvm_num_scans(mvm) < mvm->max_scans)
2525 return 0;
2526
2527 /* Use a switch, even though this is a bitmask, so that more
2528 * than one bits set will fall in default and we will warn.
2529 */
2530 switch (type) {
2531 case IWL_MVM_SCAN_REGULAR:
2532 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK)
2533 return -EBUSY;
2534 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2535 case IWL_MVM_SCAN_SCHED:
2536 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK)
2537 return -EBUSY;
2538 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2539 case IWL_MVM_SCAN_NETDETECT:
2540 /* For non-unified images, there's no need to stop
2541 * anything for net-detect since the firmware is
2542 * restarted anyway. This way, any sched scans that
2543 * were running will be restarted when we resume.
2544 */
2545 if (!unified_image)
2546 return 0;
2547
2548 /* If this is a unified image and we ran out of scans,
2549 * we need to stop something. Prefer stopping regular
2550 * scans, because the results are useless at this
2551 * point, and we should be able to keep running
2552 * another scheduled scan while suspended.
2553 */
2554 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK)
2555 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR,
2556 true);
2557 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK)
2558 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED,
2559 true);
2560 /* Something is wrong if no scan was running but we
2561 * ran out of scans.
2562 */
2563 fallthrough;
2564 default:
2565 WARN_ON(1);
2566 break;
2567 }
2568
2569 return -EIO;
2570}
2571
2572#define SCAN_TIMEOUT 30000
2573
2574void iwl_mvm_scan_timeout_wk(struct work_struct *work)
2575{
2576 struct delayed_work *delayed_work = to_delayed_work(work);
2577 struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm,
2578 scan_timeout_dwork);
2579
2580 IWL_ERR(mvm, "regular scan timed out\n");
2581
2582 iwl_force_nmi(mvm->trans);
2583}
2584
2585static void iwl_mvm_fill_scan_type(struct iwl_mvm *mvm,
2586 struct iwl_mvm_scan_params *params,
2587 struct ieee80211_vif *vif)
2588{
2589 if (iwl_mvm_is_cdb_supported(mvm)) {
2590 params->type =
2591 iwl_mvm_get_scan_type_band(mvm, vif,
2592 NL80211_BAND_2GHZ);
2593 params->hb_type =
2594 iwl_mvm_get_scan_type_band(mvm, vif,
2595 NL80211_BAND_5GHZ);
2596 } else {
2597 params->type = iwl_mvm_get_scan_type(mvm, vif);
2598 }
2599}
2600
2601struct iwl_scan_umac_handler {
2602 u8 version;
2603 int (*handler)(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2604 struct iwl_mvm_scan_params *params, int type, int uid);
2605};
2606
2607#define IWL_SCAN_UMAC_HANDLER(_ver) { \
2608 .version = _ver, \
2609 .handler = iwl_mvm_scan_umac_v##_ver, \
2610}
2611
2612static const struct iwl_scan_umac_handler iwl_scan_umac_handlers[] = {
2613 /* set the newest version first to shorten the list traverse time */
2614 IWL_SCAN_UMAC_HANDLER(15),
2615 IWL_SCAN_UMAC_HANDLER(14),
2616 IWL_SCAN_UMAC_HANDLER(12),
2617};
2618
2619static int iwl_mvm_build_scan_cmd(struct iwl_mvm *mvm,
2620 struct ieee80211_vif *vif,
2621 struct iwl_host_cmd *hcmd,
2622 struct iwl_mvm_scan_params *params,
2623 int type)
2624{
2625 int uid, i, err;
2626 u8 scan_ver;
2627
2628 lockdep_assert_held(&mvm->mutex);
2629 memset(mvm->scan_cmd, 0, mvm->scan_cmd_size);
2630
2631 if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2632 hcmd->id = SCAN_OFFLOAD_REQUEST_CMD;
2633
2634 return iwl_mvm_scan_lmac(mvm, vif, params);
2635 }
2636
2637 uid = iwl_mvm_scan_uid_by_status(mvm, 0);
2638 if (uid < 0)
2639 return uid;
2640
2641 hcmd->id = WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_REQ_UMAC);
2642
2643 scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, SCAN_REQ_UMAC,
2644 IWL_FW_CMD_VER_UNKNOWN);
2645
2646 for (i = 0; i < ARRAY_SIZE(iwl_scan_umac_handlers); i++) {
2647 const struct iwl_scan_umac_handler *ver_handler =
2648 &iwl_scan_umac_handlers[i];
2649
2650 if (ver_handler->version != scan_ver)
2651 continue;
2652
2653 return ver_handler->handler(mvm, vif, params, type, uid);
2654 }
2655
2656 err = iwl_mvm_scan_umac(mvm, vif, params, type, uid);
2657 if (err)
2658 return err;
2659
2660 return uid;
2661}
2662
2663struct iwl_mvm_scan_respect_p2p_go_iter_data {
2664 struct ieee80211_vif *current_vif;
2665 bool p2p_go;
2666 enum nl80211_band band;
2667};
2668
2669static void iwl_mvm_scan_respect_p2p_go_iter(void *_data, u8 *mac,
2670 struct ieee80211_vif *vif)
2671{
2672 struct iwl_mvm_scan_respect_p2p_go_iter_data *data = _data;
2673 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2674
2675 /* exclude the given vif */
2676 if (vif == data->current_vif)
2677 return;
2678
2679 if (vif->type == NL80211_IFTYPE_AP && vif->p2p &&
2680 mvmvif->phy_ctxt->id < NUM_PHY_CTX &&
2681 (data->band == NUM_NL80211_BANDS ||
2682 mvmvif->phy_ctxt->channel->band == data->band))
2683 data->p2p_go = true;
2684}
2685
2686static bool _iwl_mvm_get_respect_p2p_go(struct iwl_mvm *mvm,
2687 struct ieee80211_vif *vif,
2688 bool low_latency,
2689 enum nl80211_band band)
2690{
2691 struct iwl_mvm_scan_respect_p2p_go_iter_data data = {
2692 .current_vif = vif,
2693 .p2p_go = false,
2694 .band = band,
2695 };
2696
2697 if (!low_latency)
2698 return false;
2699
2700 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
2701 IEEE80211_IFACE_ITER_NORMAL,
2702 iwl_mvm_scan_respect_p2p_go_iter,
2703 &data);
2704
2705 return data.p2p_go;
2706}
2707
2708static bool iwl_mvm_get_respect_p2p_go_band(struct iwl_mvm *mvm,
2709 struct ieee80211_vif *vif,
2710 enum nl80211_band band)
2711{
2712 bool low_latency = iwl_mvm_low_latency_band(mvm, band);
2713
2714 return _iwl_mvm_get_respect_p2p_go(mvm, vif, low_latency, band);
2715}
2716
2717static bool iwl_mvm_get_respect_p2p_go(struct iwl_mvm *mvm,
2718 struct ieee80211_vif *vif)
2719{
2720 bool low_latency = iwl_mvm_low_latency(mvm);
2721
2722 return _iwl_mvm_get_respect_p2p_go(mvm, vif, low_latency,
2723 NUM_NL80211_BANDS);
2724}
2725
2726static void iwl_mvm_fill_respect_p2p_go(struct iwl_mvm *mvm,
2727 struct iwl_mvm_scan_params *params,
2728 struct ieee80211_vif *vif)
2729{
2730 if (iwl_mvm_is_cdb_supported(mvm)) {
2731 params->respect_p2p_go =
2732 iwl_mvm_get_respect_p2p_go_band(mvm, vif,
2733 NL80211_BAND_2GHZ);
2734 params->respect_p2p_go_hb =
2735 iwl_mvm_get_respect_p2p_go_band(mvm, vif,
2736 NL80211_BAND_5GHZ);
2737 } else {
2738 params->respect_p2p_go = iwl_mvm_get_respect_p2p_go(mvm, vif);
2739 }
2740}
2741
2742int iwl_mvm_reg_scan_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2743 struct cfg80211_scan_request *req,
2744 struct ieee80211_scan_ies *ies)
2745{
2746 struct iwl_host_cmd hcmd = {
2747 .len = { iwl_mvm_scan_size(mvm), },
2748 .data = { mvm->scan_cmd, },
2749 .dataflags = { IWL_HCMD_DFL_NOCOPY, },
2750 };
2751 struct iwl_mvm_scan_params params = {};
2752 int ret, uid;
2753 struct cfg80211_sched_scan_plan scan_plan = { .iterations = 1 };
2754
2755 lockdep_assert_held(&mvm->mutex);
2756
2757 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) {
2758 IWL_ERR(mvm, "scan while LAR regdomain is not set\n");
2759 return -EBUSY;
2760 }
2761
2762 ret = iwl_mvm_check_running_scans(mvm, IWL_MVM_SCAN_REGULAR);
2763 if (ret)
2764 return ret;
2765
2766 /* we should have failed registration if scan_cmd was NULL */
2767 if (WARN_ON(!mvm->scan_cmd))
2768 return -ENOMEM;
2769
2770 if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels))
2771 return -ENOBUFS;
2772
2773 params.n_ssids = req->n_ssids;
2774 params.flags = req->flags;
2775 params.n_channels = req->n_channels;
2776 params.delay = 0;
2777 params.ssids = req->ssids;
2778 params.channels = req->channels;
2779 params.mac_addr = req->mac_addr;
2780 params.mac_addr_mask = req->mac_addr_mask;
2781 params.no_cck = req->no_cck;
2782 params.pass_all = true;
2783 params.n_match_sets = 0;
2784 params.match_sets = NULL;
2785
2786 params.scan_plans = &scan_plan;
2787 params.n_scan_plans = 1;
2788
2789 params.n_6ghz_params = req->n_6ghz_params;
2790 params.scan_6ghz_params = req->scan_6ghz_params;
2791 params.scan_6ghz = req->scan_6ghz;
2792 iwl_mvm_fill_scan_type(mvm, ¶ms, vif);
2793 iwl_mvm_fill_respect_p2p_go(mvm, ¶ms, vif);
2794
2795 if (req->duration)
2796 params.iter_notif = true;
2797
2798 iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms);
2799
2800 iwl_mvm_scan_6ghz_passive_scan(mvm, ¶ms, vif);
2801
2802 uid = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, ¶ms,
2803 IWL_MVM_SCAN_REGULAR);
2804
2805 if (uid < 0)
2806 return uid;
2807
2808 iwl_mvm_pause_tcm(mvm, false);
2809
2810 ret = iwl_mvm_send_cmd(mvm, &hcmd);
2811 if (ret) {
2812 /* If the scan failed, it usually means that the FW was unable
2813 * to allocate the time events. Warn on it, but maybe we
2814 * should try to send the command again with different params.
2815 */
2816 IWL_ERR(mvm, "Scan failed! ret %d\n", ret);
2817 iwl_mvm_resume_tcm(mvm);
2818 mvm->scan_uid_status[uid] = 0;
2819 return ret;
2820 }
2821
2822 IWL_DEBUG_SCAN(mvm, "Scan request was sent successfully\n");
2823 mvm->scan_status |= IWL_MVM_SCAN_REGULAR;
2824 mvm->scan_vif = iwl_mvm_vif_from_mac80211(vif);
2825
2826 if (params.enable_6ghz_passive)
2827 mvm->last_6ghz_passive_scan_jiffies = jiffies;
2828
2829 schedule_delayed_work(&mvm->scan_timeout_dwork,
2830 msecs_to_jiffies(SCAN_TIMEOUT));
2831
2832 return 0;
2833}
2834
2835int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm,
2836 struct ieee80211_vif *vif,
2837 struct cfg80211_sched_scan_request *req,
2838 struct ieee80211_scan_ies *ies,
2839 int type)
2840{
2841 struct iwl_host_cmd hcmd = {
2842 .len = { iwl_mvm_scan_size(mvm), },
2843 .data = { mvm->scan_cmd, },
2844 .dataflags = { IWL_HCMD_DFL_NOCOPY, },
2845 };
2846 struct iwl_mvm_scan_params params = {};
2847 int ret, uid;
2848 int i, j;
2849 bool non_psc_included = false;
2850
2851 lockdep_assert_held(&mvm->mutex);
2852
2853 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) {
2854 IWL_ERR(mvm, "sched-scan while LAR regdomain is not set\n");
2855 return -EBUSY;
2856 }
2857
2858 ret = iwl_mvm_check_running_scans(mvm, type);
2859 if (ret)
2860 return ret;
2861
2862 /* we should have failed registration if scan_cmd was NULL */
2863 if (WARN_ON(!mvm->scan_cmd))
2864 return -ENOMEM;
2865
2866
2867 params.n_ssids = req->n_ssids;
2868 params.flags = req->flags;
2869 params.n_channels = req->n_channels;
2870 params.ssids = req->ssids;
2871 params.channels = req->channels;
2872 params.mac_addr = req->mac_addr;
2873 params.mac_addr_mask = req->mac_addr_mask;
2874 params.no_cck = false;
2875 params.pass_all = iwl_mvm_scan_pass_all(mvm, req);
2876 params.n_match_sets = req->n_match_sets;
2877 params.match_sets = req->match_sets;
2878 if (!req->n_scan_plans)
2879 return -EINVAL;
2880
2881 params.n_scan_plans = req->n_scan_plans;
2882 params.scan_plans = req->scan_plans;
2883
2884 iwl_mvm_fill_scan_type(mvm, ¶ms, vif);
2885 iwl_mvm_fill_respect_p2p_go(mvm, ¶ms, vif);
2886
2887 /* In theory, LMAC scans can handle a 32-bit delay, but since
2888 * waiting for over 18 hours to start the scan is a bit silly
2889 * and to keep it aligned with UMAC scans (which only support
2890 * 16-bit delays), trim it down to 16-bits.
2891 */
2892 if (req->delay > U16_MAX) {
2893 IWL_DEBUG_SCAN(mvm,
2894 "delay value is > 16-bits, set to max possible\n");
2895 params.delay = U16_MAX;
2896 } else {
2897 params.delay = req->delay;
2898 }
2899
2900 ret = iwl_mvm_config_sched_scan_profiles(mvm, req);
2901 if (ret)
2902 return ret;
2903
2904 iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms);
2905
2906 /* for 6 GHZ band only PSC channels need to be added */
2907 for (i = 0; i < params.n_channels; i++) {
2908 struct ieee80211_channel *channel = params.channels[i];
2909
2910 if (channel->band == NL80211_BAND_6GHZ &&
2911 !cfg80211_channel_is_psc(channel)) {
2912 non_psc_included = true;
2913 break;
2914 }
2915 }
2916
2917 if (non_psc_included) {
2918 params.channels = kmemdup(params.channels,
2919 sizeof(params.channels[0]) *
2920 params.n_channels,
2921 GFP_KERNEL);
2922 if (!params.channels)
2923 return -ENOMEM;
2924
2925 for (i = j = 0; i < params.n_channels; i++) {
2926 if (params.channels[i]->band == NL80211_BAND_6GHZ &&
2927 !cfg80211_channel_is_psc(params.channels[i]))
2928 continue;
2929 params.channels[j++] = params.channels[i];
2930 }
2931 params.n_channels = j;
2932 }
2933
2934 if (non_psc_included &&
2935 !iwl_mvm_scan_fits(mvm, req->n_ssids, ies, params.n_channels)) {
2936 kfree(params.channels);
2937 return -ENOBUFS;
2938 }
2939
2940 uid = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, ¶ms, type);
2941
2942 if (non_psc_included)
2943 kfree(params.channels);
2944 if (uid < 0)
2945 return uid;
2946
2947 ret = iwl_mvm_send_cmd(mvm, &hcmd);
2948 if (!ret) {
2949 IWL_DEBUG_SCAN(mvm,
2950 "Sched scan request was sent successfully\n");
2951 mvm->scan_status |= type;
2952 } else {
2953 /* If the scan failed, it usually means that the FW was unable
2954 * to allocate the time events. Warn on it, but maybe we
2955 * should try to send the command again with different params.
2956 */
2957 IWL_ERR(mvm, "Sched scan failed! ret %d\n", ret);
2958 mvm->scan_uid_status[uid] = 0;
2959 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
2960 }
2961
2962 return ret;
2963}
2964
2965void iwl_mvm_rx_umac_scan_complete_notif(struct iwl_mvm *mvm,
2966 struct iwl_rx_cmd_buffer *rxb)
2967{
2968 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2969 struct iwl_umac_scan_complete *notif = (void *)pkt->data;
2970 u32 uid = __le32_to_cpu(notif->uid);
2971 bool aborted = (notif->status == IWL_SCAN_OFFLOAD_ABORTED);
2972
2973 if (WARN_ON(!(mvm->scan_uid_status[uid] & mvm->scan_status)))
2974 return;
2975
2976 /* if the scan is already stopping, we don't need to notify mac80211 */
2977 if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_REGULAR) {
2978 struct cfg80211_scan_info info = {
2979 .aborted = aborted,
2980 .scan_start_tsf = mvm->scan_start,
2981 };
2982
2983 memcpy(info.tsf_bssid, mvm->scan_vif->bssid, ETH_ALEN);
2984 ieee80211_scan_completed(mvm->hw, &info);
2985 mvm->scan_vif = NULL;
2986 cancel_delayed_work(&mvm->scan_timeout_dwork);
2987 iwl_mvm_resume_tcm(mvm);
2988 } else if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_SCHED) {
2989 ieee80211_sched_scan_stopped(mvm->hw);
2990 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
2991 }
2992
2993 mvm->scan_status &= ~mvm->scan_uid_status[uid];
2994 IWL_DEBUG_SCAN(mvm,
2995 "Scan completed, uid %u type %u, status %s, EBS status %s\n",
2996 uid, mvm->scan_uid_status[uid],
2997 notif->status == IWL_SCAN_OFFLOAD_COMPLETED ?
2998 "completed" : "aborted",
2999 iwl_mvm_ebs_status_str(notif->ebs_status));
3000 IWL_DEBUG_SCAN(mvm,
3001 "Last line %d, Last iteration %d, Time from last iteration %d\n",
3002 notif->last_schedule, notif->last_iter,
3003 __le32_to_cpu(notif->time_from_last_iter));
3004
3005 if (notif->ebs_status != IWL_SCAN_EBS_SUCCESS &&
3006 notif->ebs_status != IWL_SCAN_EBS_INACTIVE)
3007 mvm->last_ebs_successful = false;
3008
3009 mvm->scan_uid_status[uid] = 0;
3010}
3011
3012void iwl_mvm_rx_umac_scan_iter_complete_notif(struct iwl_mvm *mvm,
3013 struct iwl_rx_cmd_buffer *rxb)
3014{
3015 struct iwl_rx_packet *pkt = rxb_addr(rxb);
3016 struct iwl_umac_scan_iter_complete_notif *notif = (void *)pkt->data;
3017
3018 mvm->scan_start = le64_to_cpu(notif->start_tsf);
3019
3020 IWL_DEBUG_SCAN(mvm,
3021 "UMAC Scan iteration complete: status=0x%x scanned_channels=%d\n",
3022 notif->status, notif->scanned_channels);
3023
3024 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) {
3025 IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n");
3026 ieee80211_sched_scan_results(mvm->hw);
3027 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED;
3028 }
3029
3030 IWL_DEBUG_SCAN(mvm,
3031 "UMAC Scan iteration complete: scan started at %llu (TSF)\n",
3032 mvm->scan_start);
3033}
3034
3035static int iwl_mvm_umac_scan_abort(struct iwl_mvm *mvm, int type)
3036{
3037 struct iwl_umac_scan_abort cmd = {};
3038 int uid, ret;
3039
3040 lockdep_assert_held(&mvm->mutex);
3041
3042 /* We should always get a valid index here, because we already
3043 * checked that this type of scan was running in the generic
3044 * code.
3045 */
3046 uid = iwl_mvm_scan_uid_by_status(mvm, type);
3047 if (WARN_ON_ONCE(uid < 0))
3048 return uid;
3049
3050 cmd.uid = cpu_to_le32(uid);
3051
3052 IWL_DEBUG_SCAN(mvm, "Sending scan abort, uid %u\n", uid);
3053
3054 ret = iwl_mvm_send_cmd_pdu(mvm,
3055 WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_ABORT_UMAC),
3056 0, sizeof(cmd), &cmd);
3057 if (!ret)
3058 mvm->scan_uid_status[uid] = type << IWL_MVM_SCAN_STOPPING_SHIFT;
3059
3060 return ret;
3061}
3062
3063static int iwl_mvm_scan_stop_wait(struct iwl_mvm *mvm, int type)
3064{
3065 struct iwl_notification_wait wait_scan_done;
3066 static const u16 scan_done_notif[] = { SCAN_COMPLETE_UMAC,
3067 SCAN_OFFLOAD_COMPLETE, };
3068 int ret;
3069
3070 lockdep_assert_held(&mvm->mutex);
3071
3072 iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_done,
3073 scan_done_notif,
3074 ARRAY_SIZE(scan_done_notif),
3075 NULL, NULL);
3076
3077 IWL_DEBUG_SCAN(mvm, "Preparing to stop scan, type %x\n", type);
3078
3079 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
3080 ret = iwl_mvm_umac_scan_abort(mvm, type);
3081 else
3082 ret = iwl_mvm_lmac_scan_abort(mvm);
3083
3084 if (ret) {
3085 IWL_DEBUG_SCAN(mvm, "couldn't stop scan type %d\n", type);
3086 iwl_remove_notification(&mvm->notif_wait, &wait_scan_done);
3087 return ret;
3088 }
3089
3090 return iwl_wait_notification(&mvm->notif_wait, &wait_scan_done,
3091 1 * HZ);
3092}
3093
3094static size_t iwl_scan_req_umac_get_size(u8 scan_ver)
3095{
3096 switch (scan_ver) {
3097 case 12:
3098 return sizeof(struct iwl_scan_req_umac_v12);
3099 case 14:
3100 case 15:
3101 return sizeof(struct iwl_scan_req_umac_v15);
3102 }
3103
3104 return 0;
3105}
3106
3107size_t iwl_mvm_scan_size(struct iwl_mvm *mvm)
3108{
3109 int base_size, tail_size;
3110 u8 scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, SCAN_REQ_UMAC,
3111 IWL_FW_CMD_VER_UNKNOWN);
3112
3113 base_size = iwl_scan_req_umac_get_size(scan_ver);
3114 if (base_size)
3115 return base_size;
3116
3117
3118 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm))
3119 base_size = IWL_SCAN_REQ_UMAC_SIZE_V8;
3120 else if (iwl_mvm_is_adaptive_dwell_supported(mvm))
3121 base_size = IWL_SCAN_REQ_UMAC_SIZE_V7;
3122 else if (iwl_mvm_cdb_scan_api(mvm))
3123 base_size = IWL_SCAN_REQ_UMAC_SIZE_V6;
3124 else
3125 base_size = IWL_SCAN_REQ_UMAC_SIZE_V1;
3126
3127 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
3128 if (iwl_mvm_is_scan_ext_chan_supported(mvm))
3129 tail_size = sizeof(struct iwl_scan_req_umac_tail_v2);
3130 else
3131 tail_size = sizeof(struct iwl_scan_req_umac_tail_v1);
3132
3133 return base_size +
3134 sizeof(struct iwl_scan_channel_cfg_umac) *
3135 mvm->fw->ucode_capa.n_scan_channels +
3136 tail_size;
3137 }
3138 return sizeof(struct iwl_scan_req_lmac) +
3139 sizeof(struct iwl_scan_channel_cfg_lmac) *
3140 mvm->fw->ucode_capa.n_scan_channels +
3141 sizeof(struct iwl_scan_probe_req_v1);
3142}
3143
3144/*
3145 * This function is used in nic restart flow, to inform mac80211 about scans
3146 * that was aborted by restart flow or by an assert.
3147 */
3148void iwl_mvm_report_scan_aborted(struct iwl_mvm *mvm)
3149{
3150 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
3151 int uid, i;
3152
3153 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_REGULAR);
3154 if (uid >= 0) {
3155 struct cfg80211_scan_info info = {
3156 .aborted = true,
3157 };
3158
3159 cancel_delayed_work(&mvm->scan_timeout_dwork);
3160
3161 ieee80211_scan_completed(mvm->hw, &info);
3162 mvm->scan_uid_status[uid] = 0;
3163 }
3164 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_SCHED);
3165 if (uid >= 0) {
3166 /* Sched scan will be restarted by mac80211 in
3167 * restart_hw, so do not report if FW is about to be
3168 * restarted.
3169 */
3170 if (!mvm->fw_restart)
3171 ieee80211_sched_scan_stopped(mvm->hw);
3172 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
3173 mvm->scan_uid_status[uid] = 0;
3174 }
3175 uid = iwl_mvm_scan_uid_by_status(mvm,
3176 IWL_MVM_SCAN_STOPPING_REGULAR);
3177 if (uid >= 0)
3178 mvm->scan_uid_status[uid] = 0;
3179
3180 uid = iwl_mvm_scan_uid_by_status(mvm,
3181 IWL_MVM_SCAN_STOPPING_SCHED);
3182 if (uid >= 0)
3183 mvm->scan_uid_status[uid] = 0;
3184
3185 /* We shouldn't have any UIDs still set. Loop over all the
3186 * UIDs to make sure there's nothing left there and warn if
3187 * any is found.
3188 */
3189 for (i = 0; i < mvm->max_scans; i++) {
3190 if (WARN_ONCE(mvm->scan_uid_status[i],
3191 "UMAC scan UID %d status was not cleaned\n",
3192 i))
3193 mvm->scan_uid_status[i] = 0;
3194 }
3195 } else {
3196 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) {
3197 struct cfg80211_scan_info info = {
3198 .aborted = true,
3199 };
3200
3201 cancel_delayed_work(&mvm->scan_timeout_dwork);
3202 ieee80211_scan_completed(mvm->hw, &info);
3203 }
3204
3205 /* Sched scan will be restarted by mac80211 in
3206 * restart_hw, so do not report if FW is about to be
3207 * restarted.
3208 */
3209 if ((mvm->scan_status & IWL_MVM_SCAN_SCHED) &&
3210 !mvm->fw_restart) {
3211 ieee80211_sched_scan_stopped(mvm->hw);
3212 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
3213 }
3214 }
3215}
3216
3217int iwl_mvm_scan_stop(struct iwl_mvm *mvm, int type, bool notify)
3218{
3219 int ret;
3220
3221 if (!(mvm->scan_status & type))
3222 return 0;
3223
3224 if (iwl_mvm_is_radio_killed(mvm)) {
3225 ret = 0;
3226 goto out;
3227 }
3228
3229 ret = iwl_mvm_scan_stop_wait(mvm, type);
3230 if (!ret)
3231 mvm->scan_status |= type << IWL_MVM_SCAN_STOPPING_SHIFT;
3232out:
3233 /* Clear the scan status so the next scan requests will
3234 * succeed and mark the scan as stopping, so that the Rx
3235 * handler doesn't do anything, as the scan was stopped from
3236 * above.
3237 */
3238 mvm->scan_status &= ~type;
3239
3240 if (type == IWL_MVM_SCAN_REGULAR) {
3241 cancel_delayed_work(&mvm->scan_timeout_dwork);
3242 if (notify) {
3243 struct cfg80211_scan_info info = {
3244 .aborted = true,
3245 };
3246
3247 ieee80211_scan_completed(mvm->hw, &info);
3248 }
3249 } else if (notify) {
3250 ieee80211_sched_scan_stopped(mvm->hw);
3251 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
3252 }
3253
3254 return ret;
3255}