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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#define IWL_SCAN_LAST_2_4_CHN 14
24
25/* adaptive dwell max budget time [TU] for full scan */
26#define IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN 300
27/* adaptive dwell max budget time [TU] for directed scan */
28#define IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN 100
29/* adaptive dwell default high band APs number */
30#define IWL_SCAN_ADWELL_DEFAULT_HB_N_APS 8
31/* adaptive dwell default low band APs number */
32#define IWL_SCAN_ADWELL_DEFAULT_LB_N_APS 2
33/* adaptive dwell default APs number in social channels (1, 6, 11) */
34#define IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL 10
35/* number of scan channels */
36#define IWL_SCAN_NUM_CHANNELS 112
37/* adaptive dwell number of APs override mask for p2p friendly GO */
38#define IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY_BIT BIT(20)
39/* adaptive dwell number of APs override mask for social channels */
40#define IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS_BIT BIT(21)
41/* adaptive dwell number of APs override for p2p friendly GO channels */
42#define IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY 10
43/* adaptive dwell number of APs override for social channels */
44#define IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS 2
45
46/* minimal number of 2GHz and 5GHz channels in the regular scan request */
47#define IWL_MVM_6GHZ_PASSIVE_SCAN_MIN_CHANS 4
48
49struct iwl_mvm_scan_timing_params {
50 u32 suspend_time;
51 u32 max_out_time;
52};
53
54static struct iwl_mvm_scan_timing_params scan_timing[] = {
55 [IWL_SCAN_TYPE_UNASSOC] = {
56 .suspend_time = 0,
57 .max_out_time = 0,
58 },
59 [IWL_SCAN_TYPE_WILD] = {
60 .suspend_time = 30,
61 .max_out_time = 120,
62 },
63 [IWL_SCAN_TYPE_MILD] = {
64 .suspend_time = 120,
65 .max_out_time = 120,
66 },
67 [IWL_SCAN_TYPE_FRAGMENTED] = {
68 .suspend_time = 95,
69 .max_out_time = 44,
70 },
71 [IWL_SCAN_TYPE_FAST_BALANCE] = {
72 .suspend_time = 30,
73 .max_out_time = 37,
74 },
75};
76
77struct iwl_mvm_scan_params {
78 /* For CDB this is low band scan type, for non-CDB - type. */
79 enum iwl_mvm_scan_type type;
80 enum iwl_mvm_scan_type hb_type;
81 u32 n_channels;
82 u16 delay;
83 int n_ssids;
84 struct cfg80211_ssid *ssids;
85 struct ieee80211_channel **channels;
86 u32 flags;
87 u8 *mac_addr;
88 u8 *mac_addr_mask;
89 bool no_cck;
90 bool pass_all;
91 int n_match_sets;
92 struct iwl_scan_probe_req preq;
93 struct cfg80211_match_set *match_sets;
94 int n_scan_plans;
95 struct cfg80211_sched_scan_plan *scan_plans;
96 bool iter_notif;
97 struct cfg80211_scan_6ghz_params *scan_6ghz_params;
98 u32 n_6ghz_params;
99 bool scan_6ghz;
100 bool enable_6ghz_passive;
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 |
167 tx_ant);
168 else
169 return cpu_to_le32(IWL_RATE_6M_PLCP | tx_ant);
170}
171
172static void iwl_mvm_scan_condition_iterator(void *data, u8 *mac,
173 struct ieee80211_vif *vif)
174{
175 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
176 int *global_cnt = data;
177
178 if (vif->type != NL80211_IFTYPE_P2P_DEVICE && mvmvif->phy_ctxt &&
179 mvmvif->phy_ctxt->id < NUM_PHY_CTX)
180 *global_cnt += 1;
181}
182
183static enum iwl_mvm_traffic_load iwl_mvm_get_traffic_load(struct iwl_mvm *mvm)
184{
185 return mvm->tcm.result.global_load;
186}
187
188static enum iwl_mvm_traffic_load
189iwl_mvm_get_traffic_load_band(struct iwl_mvm *mvm, enum nl80211_band band)
190{
191 return mvm->tcm.result.band_load[band];
192}
193
194struct iwl_is_dcm_with_go_iterator_data {
195 struct ieee80211_vif *current_vif;
196 bool is_dcm_with_p2p_go;
197};
198
199static void iwl_mvm_is_dcm_with_go_iterator(void *_data, u8 *mac,
200 struct ieee80211_vif *vif)
201{
202 struct iwl_is_dcm_with_go_iterator_data *data = _data;
203 struct iwl_mvm_vif *other_mvmvif = iwl_mvm_vif_from_mac80211(vif);
204 struct iwl_mvm_vif *curr_mvmvif =
205 iwl_mvm_vif_from_mac80211(data->current_vif);
206
207 /* exclude the given vif */
208 if (vif == data->current_vif)
209 return;
210
211 if (vif->type == NL80211_IFTYPE_AP && vif->p2p &&
212 other_mvmvif->phy_ctxt && curr_mvmvif->phy_ctxt &&
213 other_mvmvif->phy_ctxt->id != curr_mvmvif->phy_ctxt->id)
214 data->is_dcm_with_p2p_go = true;
215}
216
217static enum
218iwl_mvm_scan_type _iwl_mvm_get_scan_type(struct iwl_mvm *mvm,
219 struct ieee80211_vif *vif,
220 enum iwl_mvm_traffic_load load,
221 bool low_latency)
222{
223 int global_cnt = 0;
224
225 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
226 IEEE80211_IFACE_ITER_NORMAL,
227 iwl_mvm_scan_condition_iterator,
228 &global_cnt);
229 if (!global_cnt)
230 return IWL_SCAN_TYPE_UNASSOC;
231
232 if (fw_has_api(&mvm->fw->ucode_capa,
233 IWL_UCODE_TLV_API_FRAGMENTED_SCAN)) {
234 if ((load == IWL_MVM_TRAFFIC_HIGH || low_latency) &&
235 (!vif || vif->type != NL80211_IFTYPE_P2P_DEVICE))
236 return IWL_SCAN_TYPE_FRAGMENTED;
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 struct iwl_is_dcm_with_go_iterator_data data = {
244 .current_vif = vif,
245 .is_dcm_with_p2p_go = false,
246 };
247
248 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
249 IEEE80211_IFACE_ITER_NORMAL,
250 iwl_mvm_is_dcm_with_go_iterator,
251 &data);
252 if (data.is_dcm_with_p2p_go)
253 return IWL_SCAN_TYPE_FAST_BALANCE;
254 }
255 }
256
257 if (load >= IWL_MVM_TRAFFIC_MEDIUM || low_latency)
258 return IWL_SCAN_TYPE_MILD;
259
260 return IWL_SCAN_TYPE_WILD;
261}
262
263static enum
264iwl_mvm_scan_type iwl_mvm_get_scan_type(struct iwl_mvm *mvm,
265 struct ieee80211_vif *vif)
266{
267 enum iwl_mvm_traffic_load load;
268 bool low_latency;
269
270 load = iwl_mvm_get_traffic_load(mvm);
271 low_latency = iwl_mvm_low_latency(mvm);
272
273 return _iwl_mvm_get_scan_type(mvm, vif, load, low_latency);
274}
275
276static enum
277iwl_mvm_scan_type iwl_mvm_get_scan_type_band(struct iwl_mvm *mvm,
278 struct ieee80211_vif *vif,
279 enum nl80211_band band)
280{
281 enum iwl_mvm_traffic_load load;
282 bool low_latency;
283
284 load = iwl_mvm_get_traffic_load_band(mvm, band);
285 low_latency = iwl_mvm_low_latency_band(mvm, band);
286
287 return _iwl_mvm_get_scan_type(mvm, vif, load, low_latency);
288}
289
290static inline bool iwl_mvm_rrm_scan_needed(struct iwl_mvm *mvm)
291{
292 /* require rrm scan whenever the fw supports it */
293 return fw_has_capa(&mvm->fw->ucode_capa,
294 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT);
295}
296
297static int iwl_mvm_max_scan_ie_fw_cmd_room(struct iwl_mvm *mvm)
298{
299 int max_probe_len;
300
301 max_probe_len = SCAN_OFFLOAD_PROBE_REQ_SIZE;
302
303 /* we create the 802.11 header and SSID element */
304 max_probe_len -= 24 + 2;
305
306 /* DS parameter set element is added on 2.4GHZ band if required */
307 if (iwl_mvm_rrm_scan_needed(mvm))
308 max_probe_len -= 3;
309
310 return max_probe_len;
311}
312
313int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm)
314{
315 int max_ie_len = iwl_mvm_max_scan_ie_fw_cmd_room(mvm);
316
317 /* TODO: [BUG] This function should return the maximum allowed size of
318 * scan IEs, however the LMAC scan api contains both 2GHZ and 5GHZ IEs
319 * in the same command. So the correct implementation of this function
320 * is just iwl_mvm_max_scan_ie_fw_cmd_room() / 2. Currently the scan
321 * command has only 512 bytes and it would leave us with about 240
322 * bytes for scan IEs, which is clearly not enough. So meanwhile
323 * we will report an incorrect value. This may result in a failure to
324 * issue a scan in unified_scan_lmac and unified_sched_scan_lmac
325 * functions with -ENOBUFS, if a large enough probe will be provided.
326 */
327 return max_ie_len;
328}
329
330void iwl_mvm_rx_lmac_scan_iter_complete_notif(struct iwl_mvm *mvm,
331 struct iwl_rx_cmd_buffer *rxb)
332{
333 struct iwl_rx_packet *pkt = rxb_addr(rxb);
334 struct iwl_lmac_scan_complete_notif *notif = (void *)pkt->data;
335
336 IWL_DEBUG_SCAN(mvm,
337 "Scan offload iteration complete: status=0x%x scanned channels=%d\n",
338 notif->status, notif->scanned_channels);
339
340 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) {
341 IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n");
342 ieee80211_sched_scan_results(mvm->hw);
343 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED;
344 }
345}
346
347void iwl_mvm_rx_scan_match_found(struct iwl_mvm *mvm,
348 struct iwl_rx_cmd_buffer *rxb)
349{
350 IWL_DEBUG_SCAN(mvm, "Scheduled scan results\n");
351 ieee80211_sched_scan_results(mvm->hw);
352}
353
354static const char *iwl_mvm_ebs_status_str(enum iwl_scan_ebs_status status)
355{
356 switch (status) {
357 case IWL_SCAN_EBS_SUCCESS:
358 return "successful";
359 case IWL_SCAN_EBS_INACTIVE:
360 return "inactive";
361 case IWL_SCAN_EBS_FAILED:
362 case IWL_SCAN_EBS_CHAN_NOT_FOUND:
363 default:
364 return "failed";
365 }
366}
367
368void iwl_mvm_rx_lmac_scan_complete_notif(struct iwl_mvm *mvm,
369 struct iwl_rx_cmd_buffer *rxb)
370{
371 struct iwl_rx_packet *pkt = rxb_addr(rxb);
372 struct iwl_periodic_scan_complete *scan_notif = (void *)pkt->data;
373 bool aborted = (scan_notif->status == IWL_SCAN_OFFLOAD_ABORTED);
374
375 /* If this happens, the firmware has mistakenly sent an LMAC
376 * notification during UMAC scans -- warn and ignore it.
377 */
378 if (WARN_ON_ONCE(fw_has_capa(&mvm->fw->ucode_capa,
379 IWL_UCODE_TLV_CAPA_UMAC_SCAN)))
380 return;
381
382 /* scan status must be locked for proper checking */
383 lockdep_assert_held(&mvm->mutex);
384
385 /* We first check if we were stopping a scan, in which case we
386 * just clear the stopping flag. Then we check if it was a
387 * firmware initiated stop, in which case we need to inform
388 * mac80211.
389 * Note that we can have a stopping and a running scan
390 * simultaneously, but we can't have two different types of
391 * scans stopping or running at the same time (since LMAC
392 * doesn't support it).
393 */
394
395 if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_SCHED) {
396 WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR);
397
398 IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n",
399 aborted ? "aborted" : "completed",
400 iwl_mvm_ebs_status_str(scan_notif->ebs_status));
401 IWL_DEBUG_SCAN(mvm,
402 "Last line %d, Last iteration %d, Time after last iteration %d\n",
403 scan_notif->last_schedule_line,
404 scan_notif->last_schedule_iteration,
405 __le32_to_cpu(scan_notif->time_after_last_iter));
406
407 mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_SCHED;
408 } else if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR) {
409 IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s\n",
410 aborted ? "aborted" : "completed",
411 iwl_mvm_ebs_status_str(scan_notif->ebs_status));
412
413 mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_REGULAR;
414 } else if (mvm->scan_status & IWL_MVM_SCAN_SCHED) {
415 WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_REGULAR);
416
417 IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n",
418 aborted ? "aborted" : "completed",
419 iwl_mvm_ebs_status_str(scan_notif->ebs_status));
420 IWL_DEBUG_SCAN(mvm,
421 "Last line %d, Last iteration %d, Time after last iteration %d (FW)\n",
422 scan_notif->last_schedule_line,
423 scan_notif->last_schedule_iteration,
424 __le32_to_cpu(scan_notif->time_after_last_iter));
425
426 mvm->scan_status &= ~IWL_MVM_SCAN_SCHED;
427 ieee80211_sched_scan_stopped(mvm->hw);
428 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
429 } else if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) {
430 struct cfg80211_scan_info info = {
431 .aborted = aborted,
432 };
433
434 IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s (FW)\n",
435 aborted ? "aborted" : "completed",
436 iwl_mvm_ebs_status_str(scan_notif->ebs_status));
437
438 mvm->scan_status &= ~IWL_MVM_SCAN_REGULAR;
439 ieee80211_scan_completed(mvm->hw, &info);
440 cancel_delayed_work(&mvm->scan_timeout_dwork);
441 iwl_mvm_resume_tcm(mvm);
442 } else {
443 IWL_ERR(mvm,
444 "got scan complete notification but no scan is running\n");
445 }
446
447 mvm->last_ebs_successful =
448 scan_notif->ebs_status == IWL_SCAN_EBS_SUCCESS ||
449 scan_notif->ebs_status == IWL_SCAN_EBS_INACTIVE;
450}
451
452static int iwl_ssid_exist(u8 *ssid, u8 ssid_len, struct iwl_ssid_ie *ssid_list)
453{
454 int i;
455
456 for (i = 0; i < PROBE_OPTION_MAX; i++) {
457 if (!ssid_list[i].len)
458 break;
459 if (ssid_list[i].len == ssid_len &&
460 !memcmp(ssid_list->ssid, ssid, ssid_len))
461 return i;
462 }
463 return -1;
464}
465
466/* We insert the SSIDs in an inverted order, because the FW will
467 * invert it back.
468 */
469static void iwl_scan_build_ssids(struct iwl_mvm_scan_params *params,
470 struct iwl_ssid_ie *ssids,
471 u32 *ssid_bitmap)
472{
473 int i, j;
474 int index;
475 u32 tmp_bitmap = 0;
476
477 /*
478 * copy SSIDs from match list.
479 * iwl_config_sched_scan_profiles() uses the order of these ssids to
480 * config match list.
481 */
482 for (i = 0, j = params->n_match_sets - 1;
483 j >= 0 && i < PROBE_OPTION_MAX;
484 i++, j--) {
485 /* skip empty SSID matchsets */
486 if (!params->match_sets[j].ssid.ssid_len)
487 continue;
488 ssids[i].id = WLAN_EID_SSID;
489 ssids[i].len = params->match_sets[j].ssid.ssid_len;
490 memcpy(ssids[i].ssid, params->match_sets[j].ssid.ssid,
491 ssids[i].len);
492 }
493
494 /* add SSIDs from scan SSID list */
495 for (j = params->n_ssids - 1;
496 j >= 0 && i < PROBE_OPTION_MAX;
497 i++, j--) {
498 index = iwl_ssid_exist(params->ssids[j].ssid,
499 params->ssids[j].ssid_len,
500 ssids);
501 if (index < 0) {
502 ssids[i].id = WLAN_EID_SSID;
503 ssids[i].len = params->ssids[j].ssid_len;
504 memcpy(ssids[i].ssid, params->ssids[j].ssid,
505 ssids[i].len);
506 tmp_bitmap |= BIT(i);
507 } else {
508 tmp_bitmap |= BIT(index);
509 }
510 }
511 if (ssid_bitmap)
512 *ssid_bitmap = tmp_bitmap;
513}
514
515static int
516iwl_mvm_config_sched_scan_profiles(struct iwl_mvm *mvm,
517 struct cfg80211_sched_scan_request *req)
518{
519 struct iwl_scan_offload_profile *profile;
520 struct iwl_scan_offload_profile_cfg_v1 *profile_cfg_v1;
521 struct iwl_scan_offload_blocklist *blocklist;
522 struct iwl_scan_offload_profile_cfg_data *data;
523 int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw);
524 int profile_cfg_size = sizeof(*data) +
525 sizeof(*profile) * max_profiles;
526 struct iwl_host_cmd cmd = {
527 .id = SCAN_OFFLOAD_UPDATE_PROFILES_CMD,
528 .len[1] = profile_cfg_size,
529 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
530 .dataflags[1] = IWL_HCMD_DFL_NOCOPY,
531 };
532 int blocklist_len;
533 int i;
534 int ret;
535
536 if (WARN_ON(req->n_match_sets > max_profiles))
537 return -EIO;
538
539 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SHORT_BL)
540 blocklist_len = IWL_SCAN_SHORT_BLACKLIST_LEN;
541 else
542 blocklist_len = IWL_SCAN_MAX_BLACKLIST_LEN;
543
544 blocklist = kcalloc(blocklist_len, sizeof(*blocklist), GFP_KERNEL);
545 if (!blocklist)
546 return -ENOMEM;
547
548 profile_cfg_v1 = kzalloc(profile_cfg_size, GFP_KERNEL);
549 if (!profile_cfg_v1) {
550 ret = -ENOMEM;
551 goto free_blocklist;
552 }
553
554 cmd.data[0] = blocklist;
555 cmd.len[0] = sizeof(*blocklist) * blocklist_len;
556 cmd.data[1] = profile_cfg_v1;
557
558 /* if max_profile is MAX_PROFILES_V2, we have the new API */
559 if (max_profiles == IWL_SCAN_MAX_PROFILES_V2) {
560 struct iwl_scan_offload_profile_cfg *profile_cfg =
561 (struct iwl_scan_offload_profile_cfg *)profile_cfg_v1;
562
563 data = &profile_cfg->data;
564 } else {
565 data = &profile_cfg_v1->data;
566 }
567
568 /* No blocklist configuration */
569 data->num_profiles = req->n_match_sets;
570 data->active_clients = SCAN_CLIENT_SCHED_SCAN;
571 data->pass_match = SCAN_CLIENT_SCHED_SCAN;
572 data->match_notify = SCAN_CLIENT_SCHED_SCAN;
573
574 if (!req->n_match_sets || !req->match_sets[0].ssid.ssid_len)
575 data->any_beacon_notify = SCAN_CLIENT_SCHED_SCAN;
576
577 for (i = 0; i < req->n_match_sets; i++) {
578 profile = &profile_cfg_v1->profiles[i];
579 profile->ssid_index = i;
580 /* Support any cipher and auth algorithm */
581 profile->unicast_cipher = 0xff;
582 profile->auth_alg = 0xff;
583 profile->network_type = IWL_NETWORK_TYPE_ANY;
584 profile->band_selection = IWL_SCAN_OFFLOAD_SELECT_ANY;
585 profile->client_bitmap = SCAN_CLIENT_SCHED_SCAN;
586 }
587
588 IWL_DEBUG_SCAN(mvm, "Sending scheduled scan profile config\n");
589
590 ret = iwl_mvm_send_cmd(mvm, &cmd);
591 kfree(profile_cfg_v1);
592free_blocklist:
593 kfree(blocklist);
594
595 return ret;
596}
597
598static bool iwl_mvm_scan_pass_all(struct iwl_mvm *mvm,
599 struct cfg80211_sched_scan_request *req)
600{
601 if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) {
602 IWL_DEBUG_SCAN(mvm,
603 "Sending scheduled scan with filtering, n_match_sets %d\n",
604 req->n_match_sets);
605 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
606 return false;
607 }
608
609 IWL_DEBUG_SCAN(mvm, "Sending Scheduled scan without filtering\n");
610
611 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED;
612 return true;
613}
614
615static int iwl_mvm_lmac_scan_abort(struct iwl_mvm *mvm)
616{
617 int ret;
618 struct iwl_host_cmd cmd = {
619 .id = SCAN_OFFLOAD_ABORT_CMD,
620 };
621 u32 status = CAN_ABORT_STATUS;
622
623 ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status);
624 if (ret)
625 return ret;
626
627 if (status != CAN_ABORT_STATUS) {
628 /*
629 * The scan abort will return 1 for success or
630 * 2 for "failure". A failure condition can be
631 * due to simply not being in an active scan which
632 * can occur if we send the scan abort before the
633 * microcode has notified us that a scan is completed.
634 */
635 IWL_DEBUG_SCAN(mvm, "SCAN OFFLOAD ABORT ret %d.\n", status);
636 ret = -ENOENT;
637 }
638
639 return ret;
640}
641
642static void iwl_mvm_scan_fill_tx_cmd(struct iwl_mvm *mvm,
643 struct iwl_scan_req_tx_cmd *tx_cmd,
644 bool no_cck)
645{
646 tx_cmd[0].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL |
647 TX_CMD_FLG_BT_DIS);
648 tx_cmd[0].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm,
649 NL80211_BAND_2GHZ,
650 no_cck);
651
652 if (iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP,
653 ADD_STA,
654 0) < 12) {
655 tx_cmd[0].sta_id = mvm->aux_sta.sta_id;
656 tx_cmd[1].sta_id = mvm->aux_sta.sta_id;
657
658 /*
659 * Fw doesn't use this sta anymore, pending deprecation via HOST API
660 * change
661 */
662 } else {
663 tx_cmd[0].sta_id = 0xff;
664 tx_cmd[1].sta_id = 0xff;
665 }
666
667 tx_cmd[1].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL |
668 TX_CMD_FLG_BT_DIS);
669
670 tx_cmd[1].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm,
671 NL80211_BAND_5GHZ,
672 no_cck);
673}
674
675static void
676iwl_mvm_lmac_scan_cfg_channels(struct iwl_mvm *mvm,
677 struct ieee80211_channel **channels,
678 int n_channels, u32 ssid_bitmap,
679 struct iwl_scan_req_lmac *cmd)
680{
681 struct iwl_scan_channel_cfg_lmac *channel_cfg = (void *)&cmd->data;
682 int i;
683
684 for (i = 0; i < n_channels; i++) {
685 channel_cfg[i].channel_num =
686 cpu_to_le16(channels[i]->hw_value);
687 channel_cfg[i].iter_count = cpu_to_le16(1);
688 channel_cfg[i].iter_interval = 0;
689 channel_cfg[i].flags =
690 cpu_to_le32(IWL_UNIFIED_SCAN_CHANNEL_PARTIAL |
691 ssid_bitmap);
692 }
693}
694
695static u8 *iwl_mvm_copy_and_insert_ds_elem(struct iwl_mvm *mvm, const u8 *ies,
696 size_t len, u8 *const pos)
697{
698 static const u8 before_ds_params[] = {
699 WLAN_EID_SSID,
700 WLAN_EID_SUPP_RATES,
701 WLAN_EID_REQUEST,
702 WLAN_EID_EXT_SUPP_RATES,
703 };
704 size_t offs;
705 u8 *newpos = pos;
706
707 if (!iwl_mvm_rrm_scan_needed(mvm)) {
708 memcpy(newpos, ies, len);
709 return newpos + len;
710 }
711
712 offs = ieee80211_ie_split(ies, len,
713 before_ds_params,
714 ARRAY_SIZE(before_ds_params),
715 0);
716
717 memcpy(newpos, ies, offs);
718 newpos += offs;
719
720 /* Add a placeholder for DS Parameter Set element */
721 *newpos++ = WLAN_EID_DS_PARAMS;
722 *newpos++ = 1;
723 *newpos++ = 0;
724
725 memcpy(newpos, ies + offs, len - offs);
726 newpos += len - offs;
727
728 return newpos;
729}
730
731#define WFA_TPC_IE_LEN 9
732
733static void iwl_mvm_add_tpc_report_ie(u8 *pos)
734{
735 pos[0] = WLAN_EID_VENDOR_SPECIFIC;
736 pos[1] = WFA_TPC_IE_LEN - 2;
737 pos[2] = (WLAN_OUI_MICROSOFT >> 16) & 0xff;
738 pos[3] = (WLAN_OUI_MICROSOFT >> 8) & 0xff;
739 pos[4] = WLAN_OUI_MICROSOFT & 0xff;
740 pos[5] = WLAN_OUI_TYPE_MICROSOFT_TPC;
741 pos[6] = 0;
742 /* pos[7] - tx power will be inserted by the FW */
743 pos[7] = 0;
744 pos[8] = 0;
745}
746
747static void
748iwl_mvm_build_scan_probe(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
749 struct ieee80211_scan_ies *ies,
750 struct iwl_mvm_scan_params *params)
751{
752 struct ieee80211_mgmt *frame = (void *)params->preq.buf;
753 u8 *pos, *newpos;
754 const u8 *mac_addr = params->flags & NL80211_SCAN_FLAG_RANDOM_ADDR ?
755 params->mac_addr : NULL;
756
757 /*
758 * Unfortunately, right now the offload scan doesn't support randomising
759 * within the firmware, so until the firmware API is ready we implement
760 * it in the driver. This means that the scan iterations won't really be
761 * random, only when it's restarted, but at least that helps a bit.
762 */
763 if (mac_addr)
764 get_random_mask_addr(frame->sa, mac_addr,
765 params->mac_addr_mask);
766 else
767 memcpy(frame->sa, vif->addr, ETH_ALEN);
768
769 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
770 eth_broadcast_addr(frame->da);
771 eth_broadcast_addr(frame->bssid);
772 frame->seq_ctrl = 0;
773
774 pos = frame->u.probe_req.variable;
775 *pos++ = WLAN_EID_SSID;
776 *pos++ = 0;
777
778 params->preq.mac_header.offset = 0;
779 params->preq.mac_header.len = cpu_to_le16(24 + 2);
780
781 /* Insert ds parameter set element on 2.4 GHz band */
782 newpos = iwl_mvm_copy_and_insert_ds_elem(mvm,
783 ies->ies[NL80211_BAND_2GHZ],
784 ies->len[NL80211_BAND_2GHZ],
785 pos);
786 params->preq.band_data[0].offset = cpu_to_le16(pos - params->preq.buf);
787 params->preq.band_data[0].len = cpu_to_le16(newpos - pos);
788 pos = newpos;
789
790 memcpy(pos, ies->ies[NL80211_BAND_5GHZ],
791 ies->len[NL80211_BAND_5GHZ]);
792 params->preq.band_data[1].offset = cpu_to_le16(pos - params->preq.buf);
793 params->preq.band_data[1].len =
794 cpu_to_le16(ies->len[NL80211_BAND_5GHZ]);
795 pos += ies->len[NL80211_BAND_5GHZ];
796
797 memcpy(pos, ies->ies[NL80211_BAND_6GHZ],
798 ies->len[NL80211_BAND_6GHZ]);
799 params->preq.band_data[2].offset = cpu_to_le16(pos - params->preq.buf);
800 params->preq.band_data[2].len =
801 cpu_to_le16(ies->len[NL80211_BAND_6GHZ]);
802 pos += ies->len[NL80211_BAND_6GHZ];
803 memcpy(pos, ies->common_ies, ies->common_ie_len);
804 params->preq.common_data.offset = cpu_to_le16(pos - params->preq.buf);
805
806 if (iwl_mvm_rrm_scan_needed(mvm) &&
807 !fw_has_capa(&mvm->fw->ucode_capa,
808 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) {
809 iwl_mvm_add_tpc_report_ie(pos + ies->common_ie_len);
810 params->preq.common_data.len = cpu_to_le16(ies->common_ie_len +
811 WFA_TPC_IE_LEN);
812 } else {
813 params->preq.common_data.len = cpu_to_le16(ies->common_ie_len);
814 }
815}
816
817static void iwl_mvm_scan_lmac_dwell(struct iwl_mvm *mvm,
818 struct iwl_scan_req_lmac *cmd,
819 struct iwl_mvm_scan_params *params)
820{
821 cmd->active_dwell = IWL_SCAN_DWELL_ACTIVE;
822 cmd->passive_dwell = IWL_SCAN_DWELL_PASSIVE;
823 cmd->fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED;
824 cmd->extended_dwell = IWL_SCAN_DWELL_EXTENDED;
825 cmd->max_out_time = cpu_to_le32(scan_timing[params->type].max_out_time);
826 cmd->suspend_time = cpu_to_le32(scan_timing[params->type].suspend_time);
827 cmd->scan_prio = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
828}
829
830static inline bool iwl_mvm_scan_fits(struct iwl_mvm *mvm, int n_ssids,
831 struct ieee80211_scan_ies *ies,
832 int n_channels)
833{
834 return ((n_ssids <= PROBE_OPTION_MAX) &&
835 (n_channels <= mvm->fw->ucode_capa.n_scan_channels) &
836 (ies->common_ie_len +
837 ies->len[NL80211_BAND_2GHZ] +
838 ies->len[NL80211_BAND_5GHZ] <=
839 iwl_mvm_max_scan_ie_fw_cmd_room(mvm)));
840}
841
842static inline bool iwl_mvm_scan_use_ebs(struct iwl_mvm *mvm,
843 struct ieee80211_vif *vif)
844{
845 const struct iwl_ucode_capabilities *capa = &mvm->fw->ucode_capa;
846 bool low_latency;
847
848 if (iwl_mvm_is_cdb_supported(mvm))
849 low_latency = iwl_mvm_low_latency_band(mvm, NL80211_BAND_5GHZ);
850 else
851 low_latency = iwl_mvm_low_latency(mvm);
852
853 /* We can only use EBS if:
854 * 1. the feature is supported;
855 * 2. the last EBS was successful;
856 * 3. if only single scan, the single scan EBS API is supported;
857 * 4. it's not a p2p find operation.
858 * 5. we are not in low latency mode,
859 * or if fragmented ebs is supported by the FW
860 */
861 return ((capa->flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT) &&
862 mvm->last_ebs_successful && IWL_MVM_ENABLE_EBS &&
863 vif->type != NL80211_IFTYPE_P2P_DEVICE &&
864 (!low_latency || iwl_mvm_is_frag_ebs_supported(mvm)));
865}
866
867static inline bool iwl_mvm_is_regular_scan(struct iwl_mvm_scan_params *params)
868{
869 return params->n_scan_plans == 1 &&
870 params->scan_plans[0].iterations == 1;
871}
872
873static bool iwl_mvm_is_scan_fragmented(enum iwl_mvm_scan_type type)
874{
875 return (type == IWL_SCAN_TYPE_FRAGMENTED ||
876 type == IWL_SCAN_TYPE_FAST_BALANCE);
877}
878
879static int iwl_mvm_scan_lmac_flags(struct iwl_mvm *mvm,
880 struct iwl_mvm_scan_params *params,
881 struct ieee80211_vif *vif)
882{
883 int flags = 0;
884
885 if (params->n_ssids == 0)
886 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE;
887
888 if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0)
889 flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION;
890
891 if (iwl_mvm_is_scan_fragmented(params->type))
892 flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED;
893
894 if (iwl_mvm_rrm_scan_needed(mvm) &&
895 fw_has_capa(&mvm->fw->ucode_capa,
896 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
897 flags |= IWL_MVM_LMAC_SCAN_FLAGS_RRM_ENABLED;
898
899 if (params->pass_all)
900 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL;
901 else
902 flags |= IWL_MVM_LMAC_SCAN_FLAG_MATCH;
903
904#ifdef CONFIG_IWLWIFI_DEBUGFS
905 if (mvm->scan_iter_notif_enabled)
906 flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE;
907#endif
908
909 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED)
910 flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE;
911
912 if (iwl_mvm_is_regular_scan(params) &&
913 vif->type != NL80211_IFTYPE_P2P_DEVICE &&
914 !iwl_mvm_is_scan_fragmented(params->type))
915 flags |= IWL_MVM_LMAC_SCAN_FLAG_EXTENDED_DWELL;
916
917 return flags;
918}
919
920static void
921iwl_mvm_scan_set_legacy_probe_req(struct iwl_scan_probe_req_v1 *p_req,
922 struct iwl_scan_probe_req *src_p_req)
923{
924 int i;
925
926 p_req->mac_header = src_p_req->mac_header;
927 for (i = 0; i < SCAN_NUM_BAND_PROBE_DATA_V_1; i++)
928 p_req->band_data[i] = src_p_req->band_data[i];
929 p_req->common_data = src_p_req->common_data;
930 memcpy(p_req->buf, src_p_req->buf, sizeof(p_req->buf));
931}
932
933static int iwl_mvm_scan_lmac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
934 struct iwl_mvm_scan_params *params)
935{
936 struct iwl_scan_req_lmac *cmd = mvm->scan_cmd;
937 struct iwl_scan_probe_req_v1 *preq =
938 (void *)(cmd->data + sizeof(struct iwl_scan_channel_cfg_lmac) *
939 mvm->fw->ucode_capa.n_scan_channels);
940 u32 ssid_bitmap = 0;
941 int i;
942 u8 band;
943
944 if (WARN_ON(params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS))
945 return -EINVAL;
946
947 iwl_mvm_scan_lmac_dwell(mvm, cmd, params);
948
949 cmd->rx_chain_select = iwl_mvm_scan_rx_chain(mvm);
950 cmd->iter_num = cpu_to_le32(1);
951 cmd->n_channels = (u8)params->n_channels;
952
953 cmd->delay = cpu_to_le32(params->delay);
954
955 cmd->scan_flags = cpu_to_le32(iwl_mvm_scan_lmac_flags(mvm, params,
956 vif));
957
958 band = iwl_mvm_phy_band_from_nl80211(params->channels[0]->band);
959 cmd->flags = cpu_to_le32(band);
960 cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP |
961 MAC_FILTER_IN_BEACON);
962 iwl_mvm_scan_fill_tx_cmd(mvm, cmd->tx_cmd, params->no_cck);
963 iwl_scan_build_ssids(params, cmd->direct_scan, &ssid_bitmap);
964
965 /* this API uses bits 1-20 instead of 0-19 */
966 ssid_bitmap <<= 1;
967
968 for (i = 0; i < params->n_scan_plans; i++) {
969 struct cfg80211_sched_scan_plan *scan_plan =
970 ¶ms->scan_plans[i];
971
972 cmd->schedule[i].delay =
973 cpu_to_le16(scan_plan->interval);
974 cmd->schedule[i].iterations = scan_plan->iterations;
975 cmd->schedule[i].full_scan_mul = 1;
976 }
977
978 /*
979 * If the number of iterations of the last scan plan is set to
980 * zero, it should run infinitely. However, this is not always the case.
981 * For example, when regular scan is requested the driver sets one scan
982 * plan with one iteration.
983 */
984 if (!cmd->schedule[i - 1].iterations)
985 cmd->schedule[i - 1].iterations = 0xff;
986
987 if (iwl_mvm_scan_use_ebs(mvm, vif)) {
988 cmd->channel_opt[0].flags =
989 cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS |
990 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
991 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD);
992 cmd->channel_opt[0].non_ebs_ratio =
993 cpu_to_le16(IWL_DENSE_EBS_SCAN_RATIO);
994 cmd->channel_opt[1].flags =
995 cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS |
996 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
997 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD);
998 cmd->channel_opt[1].non_ebs_ratio =
999 cpu_to_le16(IWL_SPARSE_EBS_SCAN_RATIO);
1000 }
1001
1002 iwl_mvm_lmac_scan_cfg_channels(mvm, params->channels,
1003 params->n_channels, ssid_bitmap, cmd);
1004
1005 iwl_mvm_scan_set_legacy_probe_req(preq, ¶ms->preq);
1006
1007 return 0;
1008}
1009
1010static int rate_to_scan_rate_flag(unsigned int rate)
1011{
1012 static const int rate_to_scan_rate[IWL_RATE_COUNT] = {
1013 [IWL_RATE_1M_INDEX] = SCAN_CONFIG_RATE_1M,
1014 [IWL_RATE_2M_INDEX] = SCAN_CONFIG_RATE_2M,
1015 [IWL_RATE_5M_INDEX] = SCAN_CONFIG_RATE_5M,
1016 [IWL_RATE_11M_INDEX] = SCAN_CONFIG_RATE_11M,
1017 [IWL_RATE_6M_INDEX] = SCAN_CONFIG_RATE_6M,
1018 [IWL_RATE_9M_INDEX] = SCAN_CONFIG_RATE_9M,
1019 [IWL_RATE_12M_INDEX] = SCAN_CONFIG_RATE_12M,
1020 [IWL_RATE_18M_INDEX] = SCAN_CONFIG_RATE_18M,
1021 [IWL_RATE_24M_INDEX] = SCAN_CONFIG_RATE_24M,
1022 [IWL_RATE_36M_INDEX] = SCAN_CONFIG_RATE_36M,
1023 [IWL_RATE_48M_INDEX] = SCAN_CONFIG_RATE_48M,
1024 [IWL_RATE_54M_INDEX] = SCAN_CONFIG_RATE_54M,
1025 };
1026
1027 return rate_to_scan_rate[rate];
1028}
1029
1030static __le32 iwl_mvm_scan_config_rates(struct iwl_mvm *mvm)
1031{
1032 struct ieee80211_supported_band *band;
1033 unsigned int rates = 0;
1034 int i;
1035
1036 band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ];
1037 for (i = 0; i < band->n_bitrates; i++)
1038 rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value);
1039 band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ];
1040 for (i = 0; i < band->n_bitrates; i++)
1041 rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value);
1042
1043 /* Set both basic rates and supported rates */
1044 rates |= SCAN_CONFIG_SUPPORTED_RATE(rates);
1045
1046 return cpu_to_le32(rates);
1047}
1048
1049static void iwl_mvm_fill_scan_dwell(struct iwl_mvm *mvm,
1050 struct iwl_scan_dwell *dwell)
1051{
1052 dwell->active = IWL_SCAN_DWELL_ACTIVE;
1053 dwell->passive = IWL_SCAN_DWELL_PASSIVE;
1054 dwell->fragmented = IWL_SCAN_DWELL_FRAGMENTED;
1055 dwell->extended = IWL_SCAN_DWELL_EXTENDED;
1056}
1057
1058static void iwl_mvm_fill_channels(struct iwl_mvm *mvm, u8 *channels,
1059 u32 max_channels)
1060{
1061 struct ieee80211_supported_band *band;
1062 int i, j = 0;
1063
1064 band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ];
1065 for (i = 0; i < band->n_channels && j < max_channels; i++, j++)
1066 channels[j] = band->channels[i].hw_value;
1067 band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ];
1068 for (i = 0; i < band->n_channels && j < max_channels; i++, j++)
1069 channels[j] = band->channels[i].hw_value;
1070}
1071
1072static void iwl_mvm_fill_scan_config_v1(struct iwl_mvm *mvm, void *config,
1073 u32 flags, u8 channel_flags,
1074 u32 max_channels)
1075{
1076 enum iwl_mvm_scan_type type = iwl_mvm_get_scan_type(mvm, NULL);
1077 struct iwl_scan_config_v1 *cfg = config;
1078
1079 cfg->flags = cpu_to_le32(flags);
1080 cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm));
1081 cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm));
1082 cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm);
1083 cfg->out_of_channel_time = cpu_to_le32(scan_timing[type].max_out_time);
1084 cfg->suspend_time = cpu_to_le32(scan_timing[type].suspend_time);
1085
1086 iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell);
1087
1088 memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN);
1089
1090 /* This function should not be called when using ADD_STA ver >=12 */
1091 WARN_ON_ONCE(iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP,
1092 ADD_STA, 0) >= 12);
1093
1094 cfg->bcast_sta_id = mvm->aux_sta.sta_id;
1095 cfg->channel_flags = channel_flags;
1096
1097 iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels);
1098}
1099
1100static void iwl_mvm_fill_scan_config_v2(struct iwl_mvm *mvm, void *config,
1101 u32 flags, u8 channel_flags,
1102 u32 max_channels)
1103{
1104 struct iwl_scan_config_v2 *cfg = config;
1105
1106 cfg->flags = cpu_to_le32(flags);
1107 cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm));
1108 cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm));
1109 cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm);
1110
1111 if (iwl_mvm_is_cdb_supported(mvm)) {
1112 enum iwl_mvm_scan_type lb_type, hb_type;
1113
1114 lb_type = iwl_mvm_get_scan_type_band(mvm, NULL,
1115 NL80211_BAND_2GHZ);
1116 hb_type = iwl_mvm_get_scan_type_band(mvm, NULL,
1117 NL80211_BAND_5GHZ);
1118
1119 cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] =
1120 cpu_to_le32(scan_timing[lb_type].max_out_time);
1121 cfg->suspend_time[SCAN_LB_LMAC_IDX] =
1122 cpu_to_le32(scan_timing[lb_type].suspend_time);
1123
1124 cfg->out_of_channel_time[SCAN_HB_LMAC_IDX] =
1125 cpu_to_le32(scan_timing[hb_type].max_out_time);
1126 cfg->suspend_time[SCAN_HB_LMAC_IDX] =
1127 cpu_to_le32(scan_timing[hb_type].suspend_time);
1128 } else {
1129 enum iwl_mvm_scan_type type =
1130 iwl_mvm_get_scan_type(mvm, NULL);
1131
1132 cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] =
1133 cpu_to_le32(scan_timing[type].max_out_time);
1134 cfg->suspend_time[SCAN_LB_LMAC_IDX] =
1135 cpu_to_le32(scan_timing[type].suspend_time);
1136 }
1137
1138 iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell);
1139
1140 memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN);
1141
1142 /* This function should not be called when using ADD_STA ver >=12 */
1143 WARN_ON_ONCE(iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP,
1144 ADD_STA, 0) >= 12);
1145
1146 cfg->bcast_sta_id = mvm->aux_sta.sta_id;
1147 cfg->channel_flags = channel_flags;
1148
1149 iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels);
1150}
1151
1152static int iwl_mvm_legacy_config_scan(struct iwl_mvm *mvm)
1153{
1154 void *cfg;
1155 int ret, cmd_size;
1156 struct iwl_host_cmd cmd = {
1157 .id = iwl_cmd_id(SCAN_CFG_CMD, IWL_ALWAYS_LONG_GROUP, 0),
1158 };
1159 enum iwl_mvm_scan_type type;
1160 enum iwl_mvm_scan_type hb_type = IWL_SCAN_TYPE_NOT_SET;
1161 int num_channels =
1162 mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels +
1163 mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels;
1164 u32 flags;
1165 u8 channel_flags;
1166
1167 if (WARN_ON(num_channels > mvm->fw->ucode_capa.n_scan_channels))
1168 num_channels = mvm->fw->ucode_capa.n_scan_channels;
1169
1170 if (iwl_mvm_is_cdb_supported(mvm)) {
1171 type = iwl_mvm_get_scan_type_band(mvm, NULL,
1172 NL80211_BAND_2GHZ);
1173 hb_type = iwl_mvm_get_scan_type_band(mvm, NULL,
1174 NL80211_BAND_5GHZ);
1175 if (type == mvm->scan_type && hb_type == mvm->hb_scan_type)
1176 return 0;
1177 } else {
1178 type = iwl_mvm_get_scan_type(mvm, NULL);
1179 if (type == mvm->scan_type)
1180 return 0;
1181 }
1182
1183 if (iwl_mvm_cdb_scan_api(mvm))
1184 cmd_size = sizeof(struct iwl_scan_config_v2);
1185 else
1186 cmd_size = sizeof(struct iwl_scan_config_v1);
1187 cmd_size += mvm->fw->ucode_capa.n_scan_channels;
1188
1189 cfg = kzalloc(cmd_size, GFP_KERNEL);
1190 if (!cfg)
1191 return -ENOMEM;
1192
1193 flags = SCAN_CONFIG_FLAG_ACTIVATE |
1194 SCAN_CONFIG_FLAG_ALLOW_CHUB_REQS |
1195 SCAN_CONFIG_FLAG_SET_TX_CHAINS |
1196 SCAN_CONFIG_FLAG_SET_RX_CHAINS |
1197 SCAN_CONFIG_FLAG_SET_AUX_STA_ID |
1198 SCAN_CONFIG_FLAG_SET_ALL_TIMES |
1199 SCAN_CONFIG_FLAG_SET_LEGACY_RATES |
1200 SCAN_CONFIG_FLAG_SET_MAC_ADDR |
1201 SCAN_CONFIG_FLAG_SET_CHANNEL_FLAGS |
1202 SCAN_CONFIG_N_CHANNELS(num_channels) |
1203 (iwl_mvm_is_scan_fragmented(type) ?
1204 SCAN_CONFIG_FLAG_SET_FRAGMENTED :
1205 SCAN_CONFIG_FLAG_CLEAR_FRAGMENTED);
1206
1207 channel_flags = IWL_CHANNEL_FLAG_EBS |
1208 IWL_CHANNEL_FLAG_ACCURATE_EBS |
1209 IWL_CHANNEL_FLAG_EBS_ADD |
1210 IWL_CHANNEL_FLAG_PRE_SCAN_PASSIVE2ACTIVE;
1211
1212 /*
1213 * Check for fragmented scan on LMAC2 - high band.
1214 * LMAC1 - low band is checked above.
1215 */
1216 if (iwl_mvm_cdb_scan_api(mvm)) {
1217 if (iwl_mvm_is_cdb_supported(mvm))
1218 flags |= (iwl_mvm_is_scan_fragmented(hb_type)) ?
1219 SCAN_CONFIG_FLAG_SET_LMAC2_FRAGMENTED :
1220 SCAN_CONFIG_FLAG_CLEAR_LMAC2_FRAGMENTED;
1221 iwl_mvm_fill_scan_config_v2(mvm, cfg, flags, channel_flags,
1222 num_channels);
1223 } else {
1224 iwl_mvm_fill_scan_config_v1(mvm, cfg, flags, channel_flags,
1225 num_channels);
1226 }
1227
1228 cmd.data[0] = cfg;
1229 cmd.len[0] = cmd_size;
1230 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
1231
1232 IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n");
1233
1234 ret = iwl_mvm_send_cmd(mvm, &cmd);
1235 if (!ret) {
1236 mvm->scan_type = type;
1237 mvm->hb_scan_type = hb_type;
1238 }
1239
1240 kfree(cfg);
1241 return ret;
1242}
1243
1244int iwl_mvm_config_scan(struct iwl_mvm *mvm)
1245{
1246 struct iwl_scan_config cfg;
1247 struct iwl_host_cmd cmd = {
1248 .id = iwl_cmd_id(SCAN_CFG_CMD, IWL_ALWAYS_LONG_GROUP, 0),
1249 .len[0] = sizeof(cfg),
1250 .data[0] = &cfg,
1251 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1252 };
1253
1254 if (!iwl_mvm_is_reduced_config_scan_supported(mvm))
1255 return iwl_mvm_legacy_config_scan(mvm);
1256
1257 memset(&cfg, 0, sizeof(cfg));
1258
1259 if (iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP,
1260 ADD_STA, 0) < 12) {
1261 cfg.bcast_sta_id = mvm->aux_sta.sta_id;
1262 } else if (iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP,
1263 SCAN_CFG_CMD, 0) < 5) {
1264 /*
1265 * Fw doesn't use this sta anymore. Deprecated on SCAN_CFG_CMD
1266 * version 5.
1267 */
1268 cfg.bcast_sta_id = 0xff;
1269 }
1270
1271 cfg.tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm));
1272 cfg.rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm));
1273
1274 IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n");
1275
1276 return iwl_mvm_send_cmd(mvm, &cmd);
1277}
1278
1279static int iwl_mvm_scan_uid_by_status(struct iwl_mvm *mvm, int status)
1280{
1281 int i;
1282
1283 for (i = 0; i < mvm->max_scans; i++)
1284 if (mvm->scan_uid_status[i] == status)
1285 return i;
1286
1287 return -ENOENT;
1288}
1289
1290static void iwl_mvm_scan_umac_dwell(struct iwl_mvm *mvm,
1291 struct iwl_scan_req_umac *cmd,
1292 struct iwl_mvm_scan_params *params)
1293{
1294 struct iwl_mvm_scan_timing_params *timing, *hb_timing;
1295 u8 active_dwell, passive_dwell;
1296
1297 timing = &scan_timing[params->type];
1298 active_dwell = IWL_SCAN_DWELL_ACTIVE;
1299 passive_dwell = IWL_SCAN_DWELL_PASSIVE;
1300
1301 if (iwl_mvm_is_adaptive_dwell_supported(mvm)) {
1302 cmd->v7.adwell_default_n_aps_social =
1303 IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL;
1304 cmd->v7.adwell_default_n_aps =
1305 IWL_SCAN_ADWELL_DEFAULT_LB_N_APS;
1306
1307 if (iwl_mvm_is_adwell_hb_ap_num_supported(mvm))
1308 cmd->v9.adwell_default_hb_n_aps =
1309 IWL_SCAN_ADWELL_DEFAULT_HB_N_APS;
1310
1311 /* if custom max budget was configured with debugfs */
1312 if (IWL_MVM_ADWELL_MAX_BUDGET)
1313 cmd->v7.adwell_max_budget =
1314 cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET);
1315 else if (params->ssids && params->ssids[0].ssid_len)
1316 cmd->v7.adwell_max_budget =
1317 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN);
1318 else
1319 cmd->v7.adwell_max_budget =
1320 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN);
1321
1322 cmd->v7.scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1323 cmd->v7.max_out_time[SCAN_LB_LMAC_IDX] =
1324 cpu_to_le32(timing->max_out_time);
1325 cmd->v7.suspend_time[SCAN_LB_LMAC_IDX] =
1326 cpu_to_le32(timing->suspend_time);
1327
1328 if (iwl_mvm_is_cdb_supported(mvm)) {
1329 hb_timing = &scan_timing[params->hb_type];
1330
1331 cmd->v7.max_out_time[SCAN_HB_LMAC_IDX] =
1332 cpu_to_le32(hb_timing->max_out_time);
1333 cmd->v7.suspend_time[SCAN_HB_LMAC_IDX] =
1334 cpu_to_le32(hb_timing->suspend_time);
1335 }
1336
1337 if (!iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) {
1338 cmd->v7.active_dwell = active_dwell;
1339 cmd->v7.passive_dwell = passive_dwell;
1340 cmd->v7.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED;
1341 } else {
1342 cmd->v8.active_dwell[SCAN_LB_LMAC_IDX] = active_dwell;
1343 cmd->v8.passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell;
1344 if (iwl_mvm_is_cdb_supported(mvm)) {
1345 cmd->v8.active_dwell[SCAN_HB_LMAC_IDX] =
1346 active_dwell;
1347 cmd->v8.passive_dwell[SCAN_HB_LMAC_IDX] =
1348 passive_dwell;
1349 }
1350 }
1351 } else {
1352 cmd->v1.extended_dwell = IWL_SCAN_DWELL_EXTENDED;
1353 cmd->v1.active_dwell = active_dwell;
1354 cmd->v1.passive_dwell = passive_dwell;
1355 cmd->v1.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED;
1356
1357 if (iwl_mvm_is_cdb_supported(mvm)) {
1358 hb_timing = &scan_timing[params->hb_type];
1359
1360 cmd->v6.max_out_time[SCAN_HB_LMAC_IDX] =
1361 cpu_to_le32(hb_timing->max_out_time);
1362 cmd->v6.suspend_time[SCAN_HB_LMAC_IDX] =
1363 cpu_to_le32(hb_timing->suspend_time);
1364 }
1365
1366 if (iwl_mvm_cdb_scan_api(mvm)) {
1367 cmd->v6.scan_priority =
1368 cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1369 cmd->v6.max_out_time[SCAN_LB_LMAC_IDX] =
1370 cpu_to_le32(timing->max_out_time);
1371 cmd->v6.suspend_time[SCAN_LB_LMAC_IDX] =
1372 cpu_to_le32(timing->suspend_time);
1373 } else {
1374 cmd->v1.scan_priority =
1375 cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1376 cmd->v1.max_out_time =
1377 cpu_to_le32(timing->max_out_time);
1378 cmd->v1.suspend_time =
1379 cpu_to_le32(timing->suspend_time);
1380 }
1381 }
1382
1383 if (iwl_mvm_is_regular_scan(params))
1384 cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1385 else
1386 cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_2);
1387}
1388
1389static u32 iwl_mvm_scan_umac_ooc_priority(struct iwl_mvm_scan_params *params)
1390{
1391 return iwl_mvm_is_regular_scan(params) ?
1392 IWL_SCAN_PRIORITY_EXT_6 :
1393 IWL_SCAN_PRIORITY_EXT_2;
1394}
1395
1396static void
1397iwl_mvm_scan_umac_dwell_v10(struct iwl_mvm *mvm,
1398 struct iwl_scan_general_params_v10 *general_params,
1399 struct iwl_mvm_scan_params *params)
1400{
1401 struct iwl_mvm_scan_timing_params *timing, *hb_timing;
1402 u8 active_dwell, passive_dwell;
1403
1404 timing = &scan_timing[params->type];
1405 active_dwell = IWL_SCAN_DWELL_ACTIVE;
1406 passive_dwell = IWL_SCAN_DWELL_PASSIVE;
1407
1408 general_params->adwell_default_social_chn =
1409 IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL;
1410 general_params->adwell_default_2g = IWL_SCAN_ADWELL_DEFAULT_LB_N_APS;
1411 general_params->adwell_default_5g = IWL_SCAN_ADWELL_DEFAULT_HB_N_APS;
1412
1413 /* if custom max budget was configured with debugfs */
1414 if (IWL_MVM_ADWELL_MAX_BUDGET)
1415 general_params->adwell_max_budget =
1416 cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET);
1417 else if (params->ssids && params->ssids[0].ssid_len)
1418 general_params->adwell_max_budget =
1419 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN);
1420 else
1421 general_params->adwell_max_budget =
1422 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN);
1423
1424 general_params->scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1425 general_params->max_out_of_time[SCAN_LB_LMAC_IDX] =
1426 cpu_to_le32(timing->max_out_time);
1427 general_params->suspend_time[SCAN_LB_LMAC_IDX] =
1428 cpu_to_le32(timing->suspend_time);
1429
1430 hb_timing = &scan_timing[params->hb_type];
1431
1432 general_params->max_out_of_time[SCAN_HB_LMAC_IDX] =
1433 cpu_to_le32(hb_timing->max_out_time);
1434 general_params->suspend_time[SCAN_HB_LMAC_IDX] =
1435 cpu_to_le32(hb_timing->suspend_time);
1436
1437 general_params->active_dwell[SCAN_LB_LMAC_IDX] = active_dwell;
1438 general_params->passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell;
1439 general_params->active_dwell[SCAN_HB_LMAC_IDX] = active_dwell;
1440 general_params->passive_dwell[SCAN_HB_LMAC_IDX] = passive_dwell;
1441}
1442
1443struct iwl_mvm_scan_channel_segment {
1444 u8 start_idx;
1445 u8 end_idx;
1446 u8 first_channel_id;
1447 u8 last_channel_id;
1448 u8 channel_spacing_shift;
1449 u8 band;
1450};
1451
1452static const struct iwl_mvm_scan_channel_segment scan_channel_segments[] = {
1453 {
1454 .start_idx = 0,
1455 .end_idx = 13,
1456 .first_channel_id = 1,
1457 .last_channel_id = 14,
1458 .channel_spacing_shift = 0,
1459 .band = PHY_BAND_24
1460 },
1461 {
1462 .start_idx = 14,
1463 .end_idx = 41,
1464 .first_channel_id = 36,
1465 .last_channel_id = 144,
1466 .channel_spacing_shift = 2,
1467 .band = PHY_BAND_5
1468 },
1469 {
1470 .start_idx = 42,
1471 .end_idx = 50,
1472 .first_channel_id = 149,
1473 .last_channel_id = 181,
1474 .channel_spacing_shift = 2,
1475 .band = PHY_BAND_5
1476 },
1477 {
1478 .start_idx = 51,
1479 .end_idx = 111,
1480 .first_channel_id = 1,
1481 .last_channel_id = 241,
1482 .channel_spacing_shift = 2,
1483 .band = PHY_BAND_6
1484 },
1485};
1486
1487static int iwl_mvm_scan_ch_and_band_to_idx(u8 channel_id, u8 band)
1488{
1489 int i, index;
1490
1491 if (!channel_id)
1492 return -EINVAL;
1493
1494 for (i = 0; i < ARRAY_SIZE(scan_channel_segments); i++) {
1495 const struct iwl_mvm_scan_channel_segment *ch_segment =
1496 &scan_channel_segments[i];
1497 u32 ch_offset;
1498
1499 if (ch_segment->band != band ||
1500 ch_segment->first_channel_id > channel_id ||
1501 ch_segment->last_channel_id < channel_id)
1502 continue;
1503
1504 ch_offset = (channel_id - ch_segment->first_channel_id) >>
1505 ch_segment->channel_spacing_shift;
1506
1507 index = scan_channel_segments[i].start_idx + ch_offset;
1508 if (index < IWL_SCAN_NUM_CHANNELS)
1509 return index;
1510
1511 break;
1512 }
1513
1514 return -EINVAL;
1515}
1516
1517static const u8 p2p_go_friendly_chs[] = {
1518 36, 40, 44, 48, 149, 153, 157, 161, 165,
1519};
1520
1521static const u8 social_chs[] = {
1522 1, 6, 11
1523};
1524
1525static void iwl_mvm_scan_ch_add_n_aps_override(enum nl80211_iftype vif_type,
1526 u8 ch_id, u8 band, u8 *ch_bitmap,
1527 size_t bitmap_n_entries)
1528{
1529 int i;
1530
1531 if (vif_type != NL80211_IFTYPE_P2P_DEVICE)
1532 return;
1533
1534 for (i = 0; i < ARRAY_SIZE(p2p_go_friendly_chs); i++) {
1535 if (p2p_go_friendly_chs[i] == ch_id) {
1536 int ch_idx, bitmap_idx;
1537
1538 ch_idx = iwl_mvm_scan_ch_and_band_to_idx(ch_id, band);
1539 if (ch_idx < 0)
1540 return;
1541
1542 bitmap_idx = ch_idx / 8;
1543 if (bitmap_idx >= bitmap_n_entries)
1544 return;
1545
1546 ch_idx = ch_idx % 8;
1547 ch_bitmap[bitmap_idx] |= BIT(ch_idx);
1548
1549 return;
1550 }
1551 }
1552}
1553
1554static u32 iwl_mvm_scan_ch_n_aps_flag(enum nl80211_iftype vif_type, u8 ch_id)
1555{
1556 int i;
1557 u32 flags = 0;
1558
1559 if (vif_type != NL80211_IFTYPE_P2P_DEVICE)
1560 goto out;
1561
1562 for (i = 0; i < ARRAY_SIZE(p2p_go_friendly_chs); i++) {
1563 if (p2p_go_friendly_chs[i] == ch_id) {
1564 flags |= IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY_BIT;
1565 break;
1566 }
1567 }
1568
1569 if (flags)
1570 goto out;
1571
1572 for (i = 0; i < ARRAY_SIZE(social_chs); i++) {
1573 if (social_chs[i] == ch_id) {
1574 flags |= IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS_BIT;
1575 break;
1576 }
1577 }
1578
1579out:
1580 return flags;
1581}
1582
1583static void
1584iwl_mvm_umac_scan_cfg_channels(struct iwl_mvm *mvm,
1585 struct ieee80211_channel **channels,
1586 int n_channels, u32 flags,
1587 struct iwl_scan_channel_cfg_umac *channel_cfg)
1588{
1589 int i;
1590
1591 for (i = 0; i < n_channels; i++) {
1592 channel_cfg[i].flags = cpu_to_le32(flags);
1593 channel_cfg[i].v1.channel_num = channels[i]->hw_value;
1594 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) {
1595 enum nl80211_band band = channels[i]->band;
1596
1597 channel_cfg[i].v2.band =
1598 iwl_mvm_phy_band_from_nl80211(band);
1599 channel_cfg[i].v2.iter_count = 1;
1600 channel_cfg[i].v2.iter_interval = 0;
1601 } else {
1602 channel_cfg[i].v1.iter_count = 1;
1603 channel_cfg[i].v1.iter_interval = 0;
1604 }
1605 }
1606}
1607
1608static void
1609iwl_mvm_umac_scan_cfg_channels_v4(struct iwl_mvm *mvm,
1610 struct ieee80211_channel **channels,
1611 struct iwl_scan_channel_params_v4 *cp,
1612 int n_channels, u32 flags,
1613 enum nl80211_iftype vif_type)
1614{
1615 u8 *bitmap = cp->adwell_ch_override_bitmap;
1616 size_t bitmap_n_entries = ARRAY_SIZE(cp->adwell_ch_override_bitmap);
1617 int i;
1618
1619 for (i = 0; i < n_channels; i++) {
1620 enum nl80211_band band = channels[i]->band;
1621 struct iwl_scan_channel_cfg_umac *cfg =
1622 &cp->channel_config[i];
1623
1624 cfg->flags = cpu_to_le32(flags);
1625 cfg->v2.channel_num = channels[i]->hw_value;
1626 cfg->v2.band = iwl_mvm_phy_band_from_nl80211(band);
1627 cfg->v2.iter_count = 1;
1628 cfg->v2.iter_interval = 0;
1629
1630 iwl_mvm_scan_ch_add_n_aps_override(vif_type,
1631 cfg->v2.channel_num,
1632 cfg->v2.band, bitmap,
1633 bitmap_n_entries);
1634 }
1635}
1636
1637static void
1638iwl_mvm_umac_scan_cfg_channels_v6(struct iwl_mvm *mvm,
1639 struct ieee80211_channel **channels,
1640 struct iwl_scan_channel_params_v6 *cp,
1641 int n_channels, u32 flags,
1642 enum nl80211_iftype vif_type)
1643{
1644 int i;
1645
1646 for (i = 0; i < n_channels; i++) {
1647 enum nl80211_band band = channels[i]->band;
1648 struct iwl_scan_channel_cfg_umac *cfg = &cp->channel_config[i];
1649 u32 n_aps_flag =
1650 iwl_mvm_scan_ch_n_aps_flag(vif_type,
1651 channels[i]->hw_value);
1652
1653 cfg->flags = cpu_to_le32(flags | n_aps_flag);
1654 cfg->v2.channel_num = channels[i]->hw_value;
1655 cfg->v2.band = iwl_mvm_phy_band_from_nl80211(band);
1656 if (cfg80211_channel_is_psc(channels[i]))
1657 cfg->flags = 0;
1658 cfg->v2.iter_count = 1;
1659 cfg->v2.iter_interval = 0;
1660 }
1661}
1662
1663static int
1664iwl_mvm_umac_scan_fill_6g_chan_list(struct iwl_mvm_scan_params *params,
1665 __le32 *cmd_short_ssid, u8 *cmd_bssid,
1666 u8 *scan_ssid_num, u8 *bssid_num)
1667{
1668 int j, idex_s = 0, idex_b = 0;
1669 struct cfg80211_scan_6ghz_params *scan_6ghz_params =
1670 params->scan_6ghz_params;
1671
1672 if (!params->n_6ghz_params) {
1673 for (j = 0; j < params->n_ssids; j++) {
1674 cmd_short_ssid[idex_s++] =
1675 cpu_to_le32(~crc32_le(~0, params->ssids[j].ssid,
1676 params->ssids[j].ssid_len));
1677 (*scan_ssid_num)++;
1678 }
1679 return 0;
1680 }
1681
1682 /*
1683 * Populate the arrays of the short SSIDs and the BSSIDs using the 6GHz
1684 * collocated parameters. This might not be optimal, as this processing
1685 * does not (yet) correspond to the actual channels, so it is possible
1686 * that some entries would be left out.
1687 *
1688 * TODO: improve this logic.
1689 */
1690 for (j = 0; j < params->n_6ghz_params; j++) {
1691 int k;
1692
1693 /* First, try to place the short SSID */
1694 if (scan_6ghz_params[j].short_ssid_valid) {
1695 for (k = 0; k < idex_s; k++) {
1696 if (cmd_short_ssid[k] ==
1697 cpu_to_le32(scan_6ghz_params[j].short_ssid))
1698 break;
1699 }
1700
1701 if (k == idex_s && idex_s < SCAN_SHORT_SSID_MAX_SIZE) {
1702 cmd_short_ssid[idex_s++] =
1703 cpu_to_le32(scan_6ghz_params[j].short_ssid);
1704 (*scan_ssid_num)++;
1705 }
1706 }
1707
1708 /* try to place BSSID for the same entry */
1709 for (k = 0; k < idex_b; k++) {
1710 if (!memcmp(&cmd_bssid[ETH_ALEN * k],
1711 scan_6ghz_params[j].bssid, ETH_ALEN))
1712 break;
1713 }
1714
1715 if (k == idex_b && idex_b < SCAN_BSSID_MAX_SIZE) {
1716 memcpy(&cmd_bssid[ETH_ALEN * idex_b++],
1717 scan_6ghz_params[j].bssid, ETH_ALEN);
1718 (*bssid_num)++;
1719 }
1720 }
1721 return 0;
1722}
1723
1724/* TODO: this function can be merged with iwl_mvm_scan_umac_fill_ch_p_v6 */
1725static void
1726iwl_mvm_umac_scan_cfg_channels_v6_6g(struct iwl_mvm_scan_params *params,
1727 u32 n_channels, __le32 *cmd_short_ssid,
1728 u8 *cmd_bssid, u8 scan_ssid_num,
1729 u8 bssid_num,
1730 struct iwl_scan_channel_params_v6 *cp,
1731 enum nl80211_iftype vif_type)
1732{
1733 struct iwl_scan_channel_cfg_umac *channel_cfg = cp->channel_config;
1734 int i;
1735 struct cfg80211_scan_6ghz_params *scan_6ghz_params =
1736 params->scan_6ghz_params;
1737
1738 for (i = 0; i < params->n_channels; i++) {
1739 struct iwl_scan_channel_cfg_umac *cfg =
1740 &cp->channel_config[i];
1741
1742 u32 s_ssid_bitmap = 0, bssid_bitmap = 0, flags = 0;
1743 u8 j, k, s_max = 0, b_max = 0, n_used_bssid_entries;
1744 bool force_passive, found = false,
1745 unsolicited_probe_on_chan = false, psc_no_listen = false;
1746
1747 cfg->v1.channel_num = params->channels[i]->hw_value;
1748 cfg->v2.band = 2;
1749 cfg->v2.iter_count = 1;
1750 cfg->v2.iter_interval = 0;
1751
1752 /*
1753 * The optimize the scan time, i.e., reduce the scan dwell time
1754 * on each channel, the below logic tries to set 3 direct BSSID
1755 * probe requests for each broadcast probe request with a short
1756 * SSID.
1757 * TODO: improve this logic
1758 */
1759 n_used_bssid_entries = 3;
1760 for (j = 0; j < params->n_6ghz_params; j++) {
1761 if (!(scan_6ghz_params[j].channel_idx == i))
1762 continue;
1763
1764 found = false;
1765 unsolicited_probe_on_chan |=
1766 scan_6ghz_params[j].unsolicited_probe;
1767 psc_no_listen |= scan_6ghz_params[j].psc_no_listen;
1768
1769 for (k = 0; k < scan_ssid_num; k++) {
1770 if (!scan_6ghz_params[j].unsolicited_probe &&
1771 le32_to_cpu(cmd_short_ssid[k]) ==
1772 scan_6ghz_params[j].short_ssid) {
1773 /* Relevant short SSID bit set */
1774 if (s_ssid_bitmap & BIT(k)) {
1775 found = true;
1776 break;
1777 }
1778
1779 /*
1780 * Use short SSID only to create a new
1781 * iteration during channel dwell.
1782 */
1783 if (n_used_bssid_entries >= 3) {
1784 s_ssid_bitmap |= BIT(k);
1785 s_max++;
1786 n_used_bssid_entries -= 3;
1787 found = true;
1788 break;
1789 }
1790 }
1791 }
1792
1793 if (found)
1794 continue;
1795
1796 for (k = 0; k < bssid_num; k++) {
1797 if (!memcmp(&cmd_bssid[ETH_ALEN * k],
1798 scan_6ghz_params[j].bssid,
1799 ETH_ALEN)) {
1800 if (!(bssid_bitmap & BIT(k))) {
1801 bssid_bitmap |= BIT(k);
1802 b_max++;
1803 n_used_bssid_entries++;
1804 }
1805 break;
1806 }
1807 }
1808 }
1809
1810 flags = bssid_bitmap | (s_ssid_bitmap << 16);
1811
1812 if (cfg80211_channel_is_psc(params->channels[i]) &&
1813 psc_no_listen)
1814 flags |= IWL_UHB_CHAN_CFG_FLAG_PSC_CHAN_NO_LISTEN;
1815
1816 if (unsolicited_probe_on_chan)
1817 flags |= IWL_UHB_CHAN_CFG_FLAG_UNSOLICITED_PROBE_RES;
1818
1819 /*
1820 * In the following cases apply passive scan:
1821 * 1. Non fragmented scan:
1822 * - PSC channel with NO_LISTEN_FLAG on should be treated
1823 * like non PSC channel
1824 * - Non PSC channel with more than 3 short SSIDs or more
1825 * than 9 BSSIDs.
1826 * - Non PSC Channel with unsolicited probe response and
1827 * more than 2 short SSIDs or more than 6 BSSIDs.
1828 * - PSC channel with more than 2 short SSIDs or more than
1829 * 6 BSSIDs.
1830 * 3. Fragmented scan:
1831 * - PSC channel with more than 1 SSID or 3 BSSIDs.
1832 * - Non PSC channel with more than 2 SSIDs or 6 BSSIDs.
1833 * - Non PSC channel with unsolicited probe response and
1834 * more than 1 SSID or more than 3 BSSIDs.
1835 */
1836 if (!iwl_mvm_is_scan_fragmented(params->type)) {
1837 if (!cfg80211_channel_is_psc(params->channels[i]) ||
1838 flags & IWL_UHB_CHAN_CFG_FLAG_PSC_CHAN_NO_LISTEN) {
1839 force_passive = (s_max > 3 || b_max > 9);
1840 force_passive |= (unsolicited_probe_on_chan &&
1841 (s_max > 2 || b_max > 6));
1842 } else {
1843 force_passive = (s_max > 2 || b_max > 6);
1844 }
1845 } else if (cfg80211_channel_is_psc(params->channels[i])) {
1846 force_passive = (s_max > 1 || b_max > 3);
1847 } else {
1848 force_passive = (s_max > 2 || b_max > 6);
1849 force_passive |= (unsolicited_probe_on_chan &&
1850 (s_max > 1 || b_max > 3));
1851 }
1852 if (force_passive ||
1853 (!flags && !cfg80211_channel_is_psc(params->channels[i])))
1854 flags |= IWL_UHB_CHAN_CFG_FLAG_FORCE_PASSIVE;
1855
1856 channel_cfg[i].flags |= cpu_to_le32(flags);
1857 }
1858}
1859
1860static u8 iwl_mvm_scan_umac_chan_flags_v2(struct iwl_mvm *mvm,
1861 struct iwl_mvm_scan_params *params,
1862 struct ieee80211_vif *vif)
1863{
1864 u8 flags = 0;
1865
1866 flags |= IWL_SCAN_CHANNEL_FLAG_ENABLE_CHAN_ORDER;
1867
1868 if (iwl_mvm_scan_use_ebs(mvm, vif))
1869 flags |= IWL_SCAN_CHANNEL_FLAG_EBS |
1870 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
1871 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD;
1872
1873 /* set fragmented ebs for fragmented scan on HB channels */
1874 if (iwl_mvm_is_scan_fragmented(params->hb_type))
1875 flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG;
1876
1877 return flags;
1878}
1879
1880static void iwl_mvm_scan_6ghz_passive_scan(struct iwl_mvm *mvm,
1881 struct iwl_mvm_scan_params *params,
1882 struct ieee80211_vif *vif)
1883{
1884 struct ieee80211_supported_band *sband =
1885 &mvm->nvm_data->bands[NL80211_BAND_6GHZ];
1886 u32 n_disabled, i;
1887
1888 params->enable_6ghz_passive = false;
1889
1890 if (params->scan_6ghz)
1891 return;
1892
1893 if (!fw_has_capa(&mvm->fw->ucode_capa,
1894 IWL_UCODE_TLV_CAPA_PASSIVE_6GHZ_SCAN)) {
1895 IWL_DEBUG_SCAN(mvm,
1896 "6GHz passive scan: Not supported by FW\n");
1897 return;
1898 }
1899
1900 /* 6GHz passive scan allowed only on station interface */
1901 if (vif->type != NL80211_IFTYPE_STATION) {
1902 IWL_DEBUG_SCAN(mvm,
1903 "6GHz passive scan: not station interface\n");
1904 return;
1905 }
1906
1907 /*
1908 * 6GHz passive scan is allowed while associated in a defined time
1909 * interval following HW reset or resume flow
1910 */
1911 if (vif->bss_conf.assoc &&
1912 (time_before(mvm->last_reset_or_resume_time_jiffies +
1913 (IWL_MVM_6GHZ_PASSIVE_SCAN_ASSOC_TIMEOUT * HZ),
1914 jiffies))) {
1915 IWL_DEBUG_SCAN(mvm, "6GHz passive scan: associated\n");
1916 return;
1917 }
1918
1919 /* No need for 6GHz passive scan if not enough time elapsed */
1920 if (time_after(mvm->last_6ghz_passive_scan_jiffies +
1921 (IWL_MVM_6GHZ_PASSIVE_SCAN_TIMEOUT * HZ), jiffies)) {
1922 IWL_DEBUG_SCAN(mvm,
1923 "6GHz passive scan: timeout did not expire\n");
1924 return;
1925 }
1926
1927 /* not enough channels in the regular scan request */
1928 if (params->n_channels < IWL_MVM_6GHZ_PASSIVE_SCAN_MIN_CHANS) {
1929 IWL_DEBUG_SCAN(mvm,
1930 "6GHz passive scan: not enough channels\n");
1931 return;
1932 }
1933
1934 for (i = 0; i < params->n_ssids; i++) {
1935 if (!params->ssids[i].ssid_len)
1936 break;
1937 }
1938
1939 /* not a wildcard scan, so cannot enable passive 6GHz scan */
1940 if (i == params->n_ssids) {
1941 IWL_DEBUG_SCAN(mvm,
1942 "6GHz passive scan: no wildcard SSID\n");
1943 return;
1944 }
1945
1946 if (!sband || !sband->n_channels) {
1947 IWL_DEBUG_SCAN(mvm,
1948 "6GHz passive scan: no 6GHz channels\n");
1949 return;
1950 }
1951
1952 for (i = 0, n_disabled = 0; i < sband->n_channels; i++) {
1953 if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED))
1954 n_disabled++;
1955 }
1956
1957 /*
1958 * Not all the 6GHz channels are disabled, so no need for 6GHz passive
1959 * scan
1960 */
1961 if (n_disabled != sband->n_channels) {
1962 IWL_DEBUG_SCAN(mvm,
1963 "6GHz passive scan: 6GHz channels enabled\n");
1964 return;
1965 }
1966
1967 /* all conditions to enable 6ghz passive scan are satisfied */
1968 IWL_DEBUG_SCAN(mvm, "6GHz passive scan: can be enabled\n");
1969 params->enable_6ghz_passive = true;
1970}
1971
1972static u16 iwl_mvm_scan_umac_flags_v2(struct iwl_mvm *mvm,
1973 struct iwl_mvm_scan_params *params,
1974 struct ieee80211_vif *vif,
1975 int type)
1976{
1977 u16 flags = 0;
1978
1979 if (params->n_ssids == 0)
1980 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FORCE_PASSIVE;
1981
1982 if (iwl_mvm_is_scan_fragmented(params->type))
1983 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1;
1984
1985 if (iwl_mvm_is_scan_fragmented(params->hb_type))
1986 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC2;
1987
1988 if (params->pass_all)
1989 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PASS_ALL;
1990 else
1991 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_MATCH;
1992
1993 if (!iwl_mvm_is_regular_scan(params))
1994 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PERIODIC;
1995
1996 if (params->iter_notif ||
1997 mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED)
1998 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_NTFY_ITER_COMPLETE;
1999
2000 if (IWL_MVM_ADWELL_ENABLE)
2001 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_ADAPTIVE_DWELL;
2002
2003 if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT)
2004 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PREEMPTIVE;
2005
2006 if ((type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) &&
2007 params->flags & NL80211_SCAN_FLAG_COLOCATED_6GHZ)
2008 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_TRIGGER_UHB_SCAN;
2009
2010 if (params->enable_6ghz_passive)
2011 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_6GHZ_PASSIVE_SCAN;
2012
2013 return flags;
2014}
2015
2016static u16 iwl_mvm_scan_umac_flags(struct iwl_mvm *mvm,
2017 struct iwl_mvm_scan_params *params,
2018 struct ieee80211_vif *vif)
2019{
2020 u16 flags = 0;
2021
2022 if (params->n_ssids == 0)
2023 flags = IWL_UMAC_SCAN_GEN_FLAGS_PASSIVE;
2024
2025 if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0)
2026 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PRE_CONNECT;
2027
2028 if (iwl_mvm_is_scan_fragmented(params->type))
2029 flags |= IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED;
2030
2031 if (iwl_mvm_is_cdb_supported(mvm) &&
2032 iwl_mvm_is_scan_fragmented(params->hb_type))
2033 flags |= IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED;
2034
2035 if (iwl_mvm_rrm_scan_needed(mvm) &&
2036 fw_has_capa(&mvm->fw->ucode_capa,
2037 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
2038 flags |= IWL_UMAC_SCAN_GEN_FLAGS_RRM_ENABLED;
2039
2040 if (params->pass_all)
2041 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PASS_ALL;
2042 else
2043 flags |= IWL_UMAC_SCAN_GEN_FLAGS_MATCH;
2044
2045 if (!iwl_mvm_is_regular_scan(params))
2046 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PERIODIC;
2047
2048 if (params->iter_notif)
2049 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE;
2050
2051#ifdef CONFIG_IWLWIFI_DEBUGFS
2052 if (mvm->scan_iter_notif_enabled)
2053 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE;
2054#endif
2055
2056 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED)
2057 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE;
2058
2059 if (iwl_mvm_is_adaptive_dwell_supported(mvm) && IWL_MVM_ADWELL_ENABLE)
2060 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ADAPTIVE_DWELL;
2061
2062 /*
2063 * Extended dwell is relevant only for low band to start with, as it is
2064 * being used for social channles only (1, 6, 11), so we can check
2065 * only scan type on low band also for CDB.
2066 */
2067 if (iwl_mvm_is_regular_scan(params) &&
2068 vif->type != NL80211_IFTYPE_P2P_DEVICE &&
2069 !iwl_mvm_is_scan_fragmented(params->type) &&
2070 !iwl_mvm_is_adaptive_dwell_supported(mvm) &&
2071 !iwl_mvm_is_oce_supported(mvm))
2072 flags |= IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL;
2073
2074 if (iwl_mvm_is_oce_supported(mvm)) {
2075 if ((params->flags &
2076 NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE))
2077 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_HIGH_TX_RATE;
2078 /* Since IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL and
2079 * NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION shares
2080 * the same bit, we need to make sure that we use this bit here
2081 * only when IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL cannot be
2082 * used. */
2083 if ((params->flags &
2084 NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) &&
2085 !WARN_ON_ONCE(!iwl_mvm_is_adaptive_dwell_supported(mvm)))
2086 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_DEFER_SUPP;
2087 if ((params->flags & NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME))
2088 flags |= IWL_UMAC_SCAN_GEN_FLAGS_MAX_CHNL_TIME;
2089 }
2090
2091 return flags;
2092}
2093
2094static int
2095iwl_mvm_fill_scan_sched_params(struct iwl_mvm_scan_params *params,
2096 struct iwl_scan_umac_schedule *schedule,
2097 __le16 *delay)
2098{
2099 int i;
2100 if (WARN_ON(!params->n_scan_plans ||
2101 params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS))
2102 return -EINVAL;
2103
2104 for (i = 0; i < params->n_scan_plans; i++) {
2105 struct cfg80211_sched_scan_plan *scan_plan =
2106 ¶ms->scan_plans[i];
2107
2108 schedule[i].iter_count = scan_plan->iterations;
2109 schedule[i].interval =
2110 cpu_to_le16(scan_plan->interval);
2111 }
2112
2113 /*
2114 * If the number of iterations of the last scan plan is set to
2115 * zero, it should run infinitely. However, this is not always the case.
2116 * For example, when regular scan is requested the driver sets one scan
2117 * plan with one iteration.
2118 */
2119 if (!schedule[params->n_scan_plans - 1].iter_count)
2120 schedule[params->n_scan_plans - 1].iter_count = 0xff;
2121
2122 *delay = cpu_to_le16(params->delay);
2123
2124 return 0;
2125}
2126
2127static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2128 struct iwl_mvm_scan_params *params,
2129 int type, int uid)
2130{
2131 struct iwl_scan_req_umac *cmd = mvm->scan_cmd;
2132 struct iwl_scan_umac_chan_param *chan_param;
2133 void *cmd_data = iwl_mvm_get_scan_req_umac_data(mvm);
2134 void *sec_part = cmd_data + sizeof(struct iwl_scan_channel_cfg_umac) *
2135 mvm->fw->ucode_capa.n_scan_channels;
2136 struct iwl_scan_req_umac_tail_v2 *tail_v2 =
2137 (struct iwl_scan_req_umac_tail_v2 *)sec_part;
2138 struct iwl_scan_req_umac_tail_v1 *tail_v1;
2139 struct iwl_ssid_ie *direct_scan;
2140 int ret = 0;
2141 u32 ssid_bitmap = 0;
2142 u8 channel_flags = 0;
2143 u16 gen_flags;
2144 struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif);
2145
2146 chan_param = iwl_mvm_get_scan_req_umac_channel(mvm);
2147
2148 iwl_mvm_scan_umac_dwell(mvm, cmd, params);
2149
2150 mvm->scan_uid_status[uid] = type;
2151
2152 cmd->uid = cpu_to_le32(uid);
2153 gen_flags = iwl_mvm_scan_umac_flags(mvm, params, vif);
2154 cmd->general_flags = cpu_to_le16(gen_flags);
2155 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) {
2156 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED)
2157 cmd->v8.num_of_fragments[SCAN_LB_LMAC_IDX] =
2158 IWL_SCAN_NUM_OF_FRAGS;
2159 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED)
2160 cmd->v8.num_of_fragments[SCAN_HB_LMAC_IDX] =
2161 IWL_SCAN_NUM_OF_FRAGS;
2162
2163 cmd->v8.general_flags2 =
2164 IWL_UMAC_SCAN_GEN_FLAGS2_ALLOW_CHNL_REORDER;
2165 }
2166
2167 cmd->scan_start_mac_id = scan_vif->id;
2168
2169 if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT)
2170 cmd->flags = cpu_to_le32(IWL_UMAC_SCAN_FLAG_PREEMPTIVE);
2171
2172 if (iwl_mvm_scan_use_ebs(mvm, vif)) {
2173 channel_flags = IWL_SCAN_CHANNEL_FLAG_EBS |
2174 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
2175 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD;
2176
2177 /* set fragmented ebs for fragmented scan on HB channels */
2178 if (iwl_mvm_is_frag_ebs_supported(mvm)) {
2179 if (gen_flags &
2180 IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED ||
2181 (!iwl_mvm_is_cdb_supported(mvm) &&
2182 gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED))
2183 channel_flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG;
2184 }
2185 }
2186
2187 chan_param->flags = channel_flags;
2188 chan_param->count = params->n_channels;
2189
2190 ret = iwl_mvm_fill_scan_sched_params(params, tail_v2->schedule,
2191 &tail_v2->delay);
2192 if (ret) {
2193 mvm->scan_uid_status[uid] = 0;
2194 return ret;
2195 }
2196
2197 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) {
2198 tail_v2->preq = params->preq;
2199 direct_scan = tail_v2->direct_scan;
2200 } else {
2201 tail_v1 = (struct iwl_scan_req_umac_tail_v1 *)sec_part;
2202 iwl_mvm_scan_set_legacy_probe_req(&tail_v1->preq,
2203 ¶ms->preq);
2204 direct_scan = tail_v1->direct_scan;
2205 }
2206 iwl_scan_build_ssids(params, direct_scan, &ssid_bitmap);
2207 iwl_mvm_umac_scan_cfg_channels(mvm, params->channels,
2208 params->n_channels, ssid_bitmap,
2209 cmd_data);
2210 return 0;
2211}
2212
2213static void
2214iwl_mvm_scan_umac_fill_general_p_v10(struct iwl_mvm *mvm,
2215 struct iwl_mvm_scan_params *params,
2216 struct ieee80211_vif *vif,
2217 struct iwl_scan_general_params_v10 *gp,
2218 u16 gen_flags)
2219{
2220 struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif);
2221
2222 iwl_mvm_scan_umac_dwell_v10(mvm, gp, params);
2223
2224 gp->flags = cpu_to_le16(gen_flags);
2225
2226 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1)
2227 gp->num_of_fragments[SCAN_LB_LMAC_IDX] = IWL_SCAN_NUM_OF_FRAGS;
2228 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC2)
2229 gp->num_of_fragments[SCAN_HB_LMAC_IDX] = IWL_SCAN_NUM_OF_FRAGS;
2230
2231 gp->scan_start_mac_id = scan_vif->id;
2232}
2233
2234static void
2235iwl_mvm_scan_umac_fill_probe_p_v3(struct iwl_mvm_scan_params *params,
2236 struct iwl_scan_probe_params_v3 *pp)
2237{
2238 pp->preq = params->preq;
2239 pp->ssid_num = params->n_ssids;
2240 iwl_scan_build_ssids(params, pp->direct_scan, NULL);
2241}
2242
2243static void
2244iwl_mvm_scan_umac_fill_probe_p_v4(struct iwl_mvm_scan_params *params,
2245 struct iwl_scan_probe_params_v4 *pp,
2246 u32 *bitmap_ssid)
2247{
2248 pp->preq = params->preq;
2249 iwl_scan_build_ssids(params, pp->direct_scan, bitmap_ssid);
2250}
2251
2252static void
2253iwl_mvm_scan_umac_fill_ch_p_v4(struct iwl_mvm *mvm,
2254 struct iwl_mvm_scan_params *params,
2255 struct ieee80211_vif *vif,
2256 struct iwl_scan_channel_params_v4 *cp,
2257 u32 channel_cfg_flags)
2258{
2259 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif);
2260 cp->count = params->n_channels;
2261 cp->num_of_aps_override = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY;
2262
2263 iwl_mvm_umac_scan_cfg_channels_v4(mvm, params->channels, cp,
2264 params->n_channels,
2265 channel_cfg_flags,
2266 vif->type);
2267}
2268
2269static void
2270iwl_mvm_scan_umac_fill_ch_p_v6(struct iwl_mvm *mvm,
2271 struct iwl_mvm_scan_params *params,
2272 struct ieee80211_vif *vif,
2273 struct iwl_scan_channel_params_v6 *cp,
2274 u32 channel_cfg_flags)
2275{
2276 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif);
2277 cp->count = params->n_channels;
2278 cp->n_aps_override[0] = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY;
2279 cp->n_aps_override[1] = IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS;
2280
2281 iwl_mvm_umac_scan_cfg_channels_v6(mvm, params->channels, cp,
2282 params->n_channels,
2283 channel_cfg_flags,
2284 vif->type);
2285
2286 if (params->enable_6ghz_passive) {
2287 struct ieee80211_supported_band *sband =
2288 &mvm->nvm_data->bands[NL80211_BAND_6GHZ];
2289 u32 i;
2290
2291 for (i = 0; i < sband->n_channels; i++) {
2292 struct ieee80211_channel *channel =
2293 &sband->channels[i];
2294
2295 struct iwl_scan_channel_cfg_umac *cfg =
2296 &cp->channel_config[cp->count];
2297
2298 if (!cfg80211_channel_is_psc(channel))
2299 continue;
2300
2301 cfg->flags = 0;
2302 cfg->v2.channel_num = channel->hw_value;
2303 cfg->v2.band = PHY_BAND_6;
2304 cfg->v2.iter_count = 1;
2305 cfg->v2.iter_interval = 0;
2306 cp->count++;
2307 }
2308 }
2309}
2310
2311static int iwl_mvm_scan_umac_v12(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2312 struct iwl_mvm_scan_params *params, int type,
2313 int uid)
2314{
2315 struct iwl_scan_req_umac_v12 *cmd = mvm->scan_cmd;
2316 struct iwl_scan_req_params_v12 *scan_p = &cmd->scan_params;
2317 int ret;
2318 u16 gen_flags;
2319
2320 mvm->scan_uid_status[uid] = type;
2321
2322 cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(params));
2323 cmd->uid = cpu_to_le32(uid);
2324
2325 gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type);
2326 iwl_mvm_scan_umac_fill_general_p_v10(mvm, params, vif,
2327 &scan_p->general_params,
2328 gen_flags);
2329
2330 ret = iwl_mvm_fill_scan_sched_params(params,
2331 scan_p->periodic_params.schedule,
2332 &scan_p->periodic_params.delay);
2333 if (ret)
2334 return ret;
2335
2336 iwl_mvm_scan_umac_fill_probe_p_v3(params, &scan_p->probe_params);
2337 iwl_mvm_scan_umac_fill_ch_p_v4(mvm, params, vif,
2338 &scan_p->channel_params, 0);
2339
2340 return 0;
2341}
2342
2343static int iwl_mvm_scan_umac_v14(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2344 struct iwl_mvm_scan_params *params, int type,
2345 int uid)
2346{
2347 struct iwl_scan_req_umac_v14 *cmd = mvm->scan_cmd;
2348 struct iwl_scan_req_params_v14 *scan_p = &cmd->scan_params;
2349 struct iwl_scan_channel_params_v6 *cp = &scan_p->channel_params;
2350 struct iwl_scan_probe_params_v4 *pb = &scan_p->probe_params;
2351 int ret;
2352 u16 gen_flags;
2353 u32 bitmap_ssid = 0;
2354
2355 mvm->scan_uid_status[uid] = type;
2356
2357 cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(params));
2358 cmd->uid = cpu_to_le32(uid);
2359
2360 gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type);
2361 iwl_mvm_scan_umac_fill_general_p_v10(mvm, params, vif,
2362 &scan_p->general_params,
2363 gen_flags);
2364
2365 ret = iwl_mvm_fill_scan_sched_params(params,
2366 scan_p->periodic_params.schedule,
2367 &scan_p->periodic_params.delay);
2368 if (ret)
2369 return ret;
2370
2371 if (!params->scan_6ghz) {
2372 iwl_mvm_scan_umac_fill_probe_p_v4(params, &scan_p->probe_params,
2373 &bitmap_ssid);
2374 iwl_mvm_scan_umac_fill_ch_p_v6(mvm, params, vif,
2375 &scan_p->channel_params, bitmap_ssid);
2376
2377 return 0;
2378 } else {
2379 pb->preq = params->preq;
2380 }
2381
2382 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif);
2383 cp->n_aps_override[0] = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY;
2384 cp->n_aps_override[1] = IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS;
2385
2386 ret = iwl_mvm_umac_scan_fill_6g_chan_list(params, pb->short_ssid,
2387 pb->bssid_array[0],
2388 &pb->short_ssid_num,
2389 &pb->bssid_num);
2390 if (ret)
2391 return ret;
2392
2393 iwl_mvm_umac_scan_cfg_channels_v6_6g(params,
2394 params->n_channels,
2395 pb->short_ssid,
2396 pb->bssid_array[0],
2397 pb->short_ssid_num,
2398 pb->bssid_num, cp,
2399 vif->type);
2400 cp->count = params->n_channels;
2401 if (!params->n_ssids ||
2402 (params->n_ssids == 1 && !params->ssids[0].ssid_len))
2403 cp->flags |= IWL_SCAN_CHANNEL_FLAG_6G_PSC_NO_FILTER;
2404
2405 return 0;
2406}
2407
2408static int iwl_mvm_num_scans(struct iwl_mvm *mvm)
2409{
2410 return hweight32(mvm->scan_status & IWL_MVM_SCAN_MASK);
2411}
2412
2413static int iwl_mvm_check_running_scans(struct iwl_mvm *mvm, int type)
2414{
2415 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
2416 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
2417
2418 /* This looks a bit arbitrary, but the idea is that if we run
2419 * out of possible simultaneous scans and the userspace is
2420 * trying to run a scan type that is already running, we
2421 * return -EBUSY. But if the userspace wants to start a
2422 * different type of scan, we stop the opposite type to make
2423 * space for the new request. The reason is backwards
2424 * compatibility with old wpa_supplicant that wouldn't stop a
2425 * scheduled scan before starting a normal scan.
2426 */
2427
2428 /* FW supports only a single periodic scan */
2429 if ((type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) &&
2430 mvm->scan_status & (IWL_MVM_SCAN_SCHED | IWL_MVM_SCAN_NETDETECT))
2431 return -EBUSY;
2432
2433 if (iwl_mvm_num_scans(mvm) < mvm->max_scans)
2434 return 0;
2435
2436 /* Use a switch, even though this is a bitmask, so that more
2437 * than one bits set will fall in default and we will warn.
2438 */
2439 switch (type) {
2440 case IWL_MVM_SCAN_REGULAR:
2441 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK)
2442 return -EBUSY;
2443 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2444 case IWL_MVM_SCAN_SCHED:
2445 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK)
2446 return -EBUSY;
2447 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2448 case IWL_MVM_SCAN_NETDETECT:
2449 /* For non-unified images, there's no need to stop
2450 * anything for net-detect since the firmware is
2451 * restarted anyway. This way, any sched scans that
2452 * were running will be restarted when we resume.
2453 */
2454 if (!unified_image)
2455 return 0;
2456
2457 /* If this is a unified image and we ran out of scans,
2458 * we need to stop something. Prefer stopping regular
2459 * scans, because the results are useless at this
2460 * point, and we should be able to keep running
2461 * another scheduled scan while suspended.
2462 */
2463 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK)
2464 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR,
2465 true);
2466 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK)
2467 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED,
2468 true);
2469 /* Something is wrong if no scan was running but we
2470 * ran out of scans.
2471 */
2472 fallthrough;
2473 default:
2474 WARN_ON(1);
2475 break;
2476 }
2477
2478 return -EIO;
2479}
2480
2481#define SCAN_TIMEOUT 20000
2482
2483void iwl_mvm_scan_timeout_wk(struct work_struct *work)
2484{
2485 struct delayed_work *delayed_work = to_delayed_work(work);
2486 struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm,
2487 scan_timeout_dwork);
2488
2489 IWL_ERR(mvm, "regular scan timed out\n");
2490
2491 iwl_force_nmi(mvm->trans);
2492}
2493
2494static void iwl_mvm_fill_scan_type(struct iwl_mvm *mvm,
2495 struct iwl_mvm_scan_params *params,
2496 struct ieee80211_vif *vif)
2497{
2498 if (iwl_mvm_is_cdb_supported(mvm)) {
2499 params->type =
2500 iwl_mvm_get_scan_type_band(mvm, vif,
2501 NL80211_BAND_2GHZ);
2502 params->hb_type =
2503 iwl_mvm_get_scan_type_band(mvm, vif,
2504 NL80211_BAND_5GHZ);
2505 } else {
2506 params->type = iwl_mvm_get_scan_type(mvm, vif);
2507 }
2508}
2509
2510struct iwl_scan_umac_handler {
2511 u8 version;
2512 int (*handler)(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2513 struct iwl_mvm_scan_params *params, int type, int uid);
2514};
2515
2516#define IWL_SCAN_UMAC_HANDLER(_ver) { \
2517 .version = _ver, \
2518 .handler = iwl_mvm_scan_umac_v##_ver, \
2519}
2520
2521static const struct iwl_scan_umac_handler iwl_scan_umac_handlers[] = {
2522 /* set the newest version first to shorten the list traverse time */
2523 IWL_SCAN_UMAC_HANDLER(14),
2524 IWL_SCAN_UMAC_HANDLER(12),
2525};
2526
2527static int iwl_mvm_build_scan_cmd(struct iwl_mvm *mvm,
2528 struct ieee80211_vif *vif,
2529 struct iwl_host_cmd *hcmd,
2530 struct iwl_mvm_scan_params *params,
2531 int type)
2532{
2533 int uid, i, err;
2534 u8 scan_ver;
2535
2536 lockdep_assert_held(&mvm->mutex);
2537 memset(mvm->scan_cmd, 0, ksize(mvm->scan_cmd));
2538
2539 if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2540 hcmd->id = SCAN_OFFLOAD_REQUEST_CMD;
2541
2542 return iwl_mvm_scan_lmac(mvm, vif, params);
2543 }
2544
2545 uid = iwl_mvm_scan_uid_by_status(mvm, 0);
2546 if (uid < 0)
2547 return uid;
2548
2549 hcmd->id = iwl_cmd_id(SCAN_REQ_UMAC, IWL_ALWAYS_LONG_GROUP, 0);
2550
2551 scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, IWL_ALWAYS_LONG_GROUP,
2552 SCAN_REQ_UMAC,
2553 IWL_FW_CMD_VER_UNKNOWN);
2554
2555 for (i = 0; i < ARRAY_SIZE(iwl_scan_umac_handlers); i++) {
2556 const struct iwl_scan_umac_handler *ver_handler =
2557 &iwl_scan_umac_handlers[i];
2558
2559 if (ver_handler->version != scan_ver)
2560 continue;
2561
2562 return ver_handler->handler(mvm, vif, params, type, uid);
2563 }
2564
2565 err = iwl_mvm_scan_umac(mvm, vif, params, type, uid);
2566 if (err)
2567 return err;
2568
2569 return uid;
2570}
2571
2572int iwl_mvm_reg_scan_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2573 struct cfg80211_scan_request *req,
2574 struct ieee80211_scan_ies *ies)
2575{
2576 struct iwl_host_cmd hcmd = {
2577 .len = { iwl_mvm_scan_size(mvm), },
2578 .data = { mvm->scan_cmd, },
2579 .dataflags = { IWL_HCMD_DFL_NOCOPY, },
2580 };
2581 struct iwl_mvm_scan_params params = {};
2582 int ret, uid;
2583 struct cfg80211_sched_scan_plan scan_plan = { .iterations = 1 };
2584
2585 lockdep_assert_held(&mvm->mutex);
2586
2587 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) {
2588 IWL_ERR(mvm, "scan while LAR regdomain is not set\n");
2589 return -EBUSY;
2590 }
2591
2592 ret = iwl_mvm_check_running_scans(mvm, IWL_MVM_SCAN_REGULAR);
2593 if (ret)
2594 return ret;
2595
2596 /* we should have failed registration if scan_cmd was NULL */
2597 if (WARN_ON(!mvm->scan_cmd))
2598 return -ENOMEM;
2599
2600 if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels))
2601 return -ENOBUFS;
2602
2603 params.n_ssids = req->n_ssids;
2604 params.flags = req->flags;
2605 params.n_channels = req->n_channels;
2606 params.delay = 0;
2607 params.ssids = req->ssids;
2608 params.channels = req->channels;
2609 params.mac_addr = req->mac_addr;
2610 params.mac_addr_mask = req->mac_addr_mask;
2611 params.no_cck = req->no_cck;
2612 params.pass_all = true;
2613 params.n_match_sets = 0;
2614 params.match_sets = NULL;
2615
2616 params.scan_plans = &scan_plan;
2617 params.n_scan_plans = 1;
2618
2619 params.n_6ghz_params = req->n_6ghz_params;
2620 params.scan_6ghz_params = req->scan_6ghz_params;
2621 params.scan_6ghz = req->scan_6ghz;
2622 iwl_mvm_fill_scan_type(mvm, ¶ms, vif);
2623
2624 if (req->duration)
2625 params.iter_notif = true;
2626
2627 iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms);
2628
2629 iwl_mvm_scan_6ghz_passive_scan(mvm, ¶ms, vif);
2630
2631 uid = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, ¶ms,
2632 IWL_MVM_SCAN_REGULAR);
2633
2634 if (uid < 0)
2635 return uid;
2636
2637 iwl_mvm_pause_tcm(mvm, false);
2638
2639 ret = iwl_mvm_send_cmd(mvm, &hcmd);
2640 if (ret) {
2641 /* If the scan failed, it usually means that the FW was unable
2642 * to allocate the time events. Warn on it, but maybe we
2643 * should try to send the command again with different params.
2644 */
2645 IWL_ERR(mvm, "Scan failed! ret %d\n", ret);
2646 iwl_mvm_resume_tcm(mvm);
2647 mvm->scan_uid_status[uid] = 0;
2648 return ret;
2649 }
2650
2651 IWL_DEBUG_SCAN(mvm, "Scan request was sent successfully\n");
2652 mvm->scan_status |= IWL_MVM_SCAN_REGULAR;
2653 mvm->scan_vif = iwl_mvm_vif_from_mac80211(vif);
2654
2655 if (params.enable_6ghz_passive)
2656 mvm->last_6ghz_passive_scan_jiffies = jiffies;
2657
2658 schedule_delayed_work(&mvm->scan_timeout_dwork,
2659 msecs_to_jiffies(SCAN_TIMEOUT));
2660
2661 return 0;
2662}
2663
2664int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm,
2665 struct ieee80211_vif *vif,
2666 struct cfg80211_sched_scan_request *req,
2667 struct ieee80211_scan_ies *ies,
2668 int type)
2669{
2670 struct iwl_host_cmd hcmd = {
2671 .len = { iwl_mvm_scan_size(mvm), },
2672 .data = { mvm->scan_cmd, },
2673 .dataflags = { IWL_HCMD_DFL_NOCOPY, },
2674 };
2675 struct iwl_mvm_scan_params params = {};
2676 int ret, uid;
2677 int i, j;
2678 bool non_psc_included = false;
2679
2680 lockdep_assert_held(&mvm->mutex);
2681
2682 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) {
2683 IWL_ERR(mvm, "sched-scan while LAR regdomain is not set\n");
2684 return -EBUSY;
2685 }
2686
2687 ret = iwl_mvm_check_running_scans(mvm, type);
2688 if (ret)
2689 return ret;
2690
2691 /* we should have failed registration if scan_cmd was NULL */
2692 if (WARN_ON(!mvm->scan_cmd))
2693 return -ENOMEM;
2694
2695
2696 params.n_ssids = req->n_ssids;
2697 params.flags = req->flags;
2698 params.n_channels = req->n_channels;
2699 params.ssids = req->ssids;
2700 params.channels = req->channels;
2701 params.mac_addr = req->mac_addr;
2702 params.mac_addr_mask = req->mac_addr_mask;
2703 params.no_cck = false;
2704 params.pass_all = iwl_mvm_scan_pass_all(mvm, req);
2705 params.n_match_sets = req->n_match_sets;
2706 params.match_sets = req->match_sets;
2707 if (!req->n_scan_plans)
2708 return -EINVAL;
2709
2710 params.n_scan_plans = req->n_scan_plans;
2711 params.scan_plans = req->scan_plans;
2712
2713 iwl_mvm_fill_scan_type(mvm, ¶ms, vif);
2714
2715 /* In theory, LMAC scans can handle a 32-bit delay, but since
2716 * waiting for over 18 hours to start the scan is a bit silly
2717 * and to keep it aligned with UMAC scans (which only support
2718 * 16-bit delays), trim it down to 16-bits.
2719 */
2720 if (req->delay > U16_MAX) {
2721 IWL_DEBUG_SCAN(mvm,
2722 "delay value is > 16-bits, set to max possible\n");
2723 params.delay = U16_MAX;
2724 } else {
2725 params.delay = req->delay;
2726 }
2727
2728 ret = iwl_mvm_config_sched_scan_profiles(mvm, req);
2729 if (ret)
2730 return ret;
2731
2732 iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms);
2733
2734 /* for 6 GHZ band only PSC channels need to be added */
2735 for (i = 0; i < params.n_channels; i++) {
2736 struct ieee80211_channel *channel = params.channels[i];
2737
2738 if (channel->band == NL80211_BAND_6GHZ &&
2739 !cfg80211_channel_is_psc(channel)) {
2740 non_psc_included = true;
2741 break;
2742 }
2743 }
2744
2745 if (non_psc_included) {
2746 params.channels = kmemdup(params.channels,
2747 sizeof(params.channels[0]) *
2748 params.n_channels,
2749 GFP_KERNEL);
2750 if (!params.channels)
2751 return -ENOMEM;
2752
2753 for (i = j = 0; i < params.n_channels; i++) {
2754 if (params.channels[i]->band == NL80211_BAND_6GHZ &&
2755 !cfg80211_channel_is_psc(params.channels[i]))
2756 continue;
2757 params.channels[j++] = params.channels[i];
2758 }
2759 params.n_channels = j;
2760 }
2761
2762 if (non_psc_included &&
2763 !iwl_mvm_scan_fits(mvm, req->n_ssids, ies, params.n_channels)) {
2764 kfree(params.channels);
2765 return -ENOBUFS;
2766 }
2767
2768 uid = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, ¶ms, type);
2769
2770 if (non_psc_included)
2771 kfree(params.channels);
2772 if (uid < 0)
2773 return uid;
2774
2775 ret = iwl_mvm_send_cmd(mvm, &hcmd);
2776 if (!ret) {
2777 IWL_DEBUG_SCAN(mvm,
2778 "Sched scan request was sent successfully\n");
2779 mvm->scan_status |= type;
2780 } else {
2781 /* If the scan failed, it usually means that the FW was unable
2782 * to allocate the time events. Warn on it, but maybe we
2783 * should try to send the command again with different params.
2784 */
2785 IWL_ERR(mvm, "Sched scan failed! ret %d\n", ret);
2786 mvm->scan_uid_status[uid] = 0;
2787 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
2788 }
2789
2790 return ret;
2791}
2792
2793void iwl_mvm_rx_umac_scan_complete_notif(struct iwl_mvm *mvm,
2794 struct iwl_rx_cmd_buffer *rxb)
2795{
2796 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2797 struct iwl_umac_scan_complete *notif = (void *)pkt->data;
2798 u32 uid = __le32_to_cpu(notif->uid);
2799 bool aborted = (notif->status == IWL_SCAN_OFFLOAD_ABORTED);
2800
2801 if (WARN_ON(!(mvm->scan_uid_status[uid] & mvm->scan_status)))
2802 return;
2803
2804 /* if the scan is already stopping, we don't need to notify mac80211 */
2805 if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_REGULAR) {
2806 struct cfg80211_scan_info info = {
2807 .aborted = aborted,
2808 .scan_start_tsf = mvm->scan_start,
2809 };
2810
2811 memcpy(info.tsf_bssid, mvm->scan_vif->bssid, ETH_ALEN);
2812 ieee80211_scan_completed(mvm->hw, &info);
2813 mvm->scan_vif = NULL;
2814 cancel_delayed_work(&mvm->scan_timeout_dwork);
2815 iwl_mvm_resume_tcm(mvm);
2816 } else if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_SCHED) {
2817 ieee80211_sched_scan_stopped(mvm->hw);
2818 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
2819 }
2820
2821 mvm->scan_status &= ~mvm->scan_uid_status[uid];
2822 IWL_DEBUG_SCAN(mvm,
2823 "Scan completed, uid %u type %u, status %s, EBS status %s\n",
2824 uid, mvm->scan_uid_status[uid],
2825 notif->status == IWL_SCAN_OFFLOAD_COMPLETED ?
2826 "completed" : "aborted",
2827 iwl_mvm_ebs_status_str(notif->ebs_status));
2828 IWL_DEBUG_SCAN(mvm,
2829 "Last line %d, Last iteration %d, Time from last iteration %d\n",
2830 notif->last_schedule, notif->last_iter,
2831 __le32_to_cpu(notif->time_from_last_iter));
2832
2833 if (notif->ebs_status != IWL_SCAN_EBS_SUCCESS &&
2834 notif->ebs_status != IWL_SCAN_EBS_INACTIVE)
2835 mvm->last_ebs_successful = false;
2836
2837 mvm->scan_uid_status[uid] = 0;
2838}
2839
2840void iwl_mvm_rx_umac_scan_iter_complete_notif(struct iwl_mvm *mvm,
2841 struct iwl_rx_cmd_buffer *rxb)
2842{
2843 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2844 struct iwl_umac_scan_iter_complete_notif *notif = (void *)pkt->data;
2845
2846 mvm->scan_start = le64_to_cpu(notif->start_tsf);
2847
2848 IWL_DEBUG_SCAN(mvm,
2849 "UMAC Scan iteration complete: status=0x%x scanned_channels=%d\n",
2850 notif->status, notif->scanned_channels);
2851
2852 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) {
2853 IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n");
2854 ieee80211_sched_scan_results(mvm->hw);
2855 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED;
2856 }
2857
2858 IWL_DEBUG_SCAN(mvm,
2859 "UMAC Scan iteration complete: scan started at %llu (TSF)\n",
2860 mvm->scan_start);
2861}
2862
2863static int iwl_mvm_umac_scan_abort(struct iwl_mvm *mvm, int type)
2864{
2865 struct iwl_umac_scan_abort cmd = {};
2866 int uid, ret;
2867
2868 lockdep_assert_held(&mvm->mutex);
2869
2870 /* We should always get a valid index here, because we already
2871 * checked that this type of scan was running in the generic
2872 * code.
2873 */
2874 uid = iwl_mvm_scan_uid_by_status(mvm, type);
2875 if (WARN_ON_ONCE(uid < 0))
2876 return uid;
2877
2878 cmd.uid = cpu_to_le32(uid);
2879
2880 IWL_DEBUG_SCAN(mvm, "Sending scan abort, uid %u\n", uid);
2881
2882 ret = iwl_mvm_send_cmd_pdu(mvm,
2883 iwl_cmd_id(SCAN_ABORT_UMAC,
2884 IWL_ALWAYS_LONG_GROUP, 0),
2885 0, sizeof(cmd), &cmd);
2886 if (!ret)
2887 mvm->scan_uid_status[uid] = type << IWL_MVM_SCAN_STOPPING_SHIFT;
2888
2889 return ret;
2890}
2891
2892static int iwl_mvm_scan_stop_wait(struct iwl_mvm *mvm, int type)
2893{
2894 struct iwl_notification_wait wait_scan_done;
2895 static const u16 scan_done_notif[] = { SCAN_COMPLETE_UMAC,
2896 SCAN_OFFLOAD_COMPLETE, };
2897 int ret;
2898
2899 lockdep_assert_held(&mvm->mutex);
2900
2901 iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_done,
2902 scan_done_notif,
2903 ARRAY_SIZE(scan_done_notif),
2904 NULL, NULL);
2905
2906 IWL_DEBUG_SCAN(mvm, "Preparing to stop scan, type %x\n", type);
2907
2908 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
2909 ret = iwl_mvm_umac_scan_abort(mvm, type);
2910 else
2911 ret = iwl_mvm_lmac_scan_abort(mvm);
2912
2913 if (ret) {
2914 IWL_DEBUG_SCAN(mvm, "couldn't stop scan type %d\n", type);
2915 iwl_remove_notification(&mvm->notif_wait, &wait_scan_done);
2916 return ret;
2917 }
2918
2919 return iwl_wait_notification(&mvm->notif_wait, &wait_scan_done,
2920 1 * HZ);
2921}
2922
2923#define IWL_SCAN_REQ_UMAC_HANDLE_SIZE(_ver) { \
2924 case (_ver): return sizeof(struct iwl_scan_req_umac_v##_ver); \
2925}
2926
2927static int iwl_scan_req_umac_get_size(u8 scan_ver)
2928{
2929 switch (scan_ver) {
2930 IWL_SCAN_REQ_UMAC_HANDLE_SIZE(14);
2931 IWL_SCAN_REQ_UMAC_HANDLE_SIZE(12);
2932 }
2933
2934 return 0;
2935}
2936
2937int iwl_mvm_scan_size(struct iwl_mvm *mvm)
2938{
2939 int base_size, tail_size;
2940 u8 scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, IWL_ALWAYS_LONG_GROUP,
2941 SCAN_REQ_UMAC,
2942 IWL_FW_CMD_VER_UNKNOWN);
2943
2944 base_size = iwl_scan_req_umac_get_size(scan_ver);
2945 if (base_size)
2946 return base_size;
2947
2948
2949 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm))
2950 base_size = IWL_SCAN_REQ_UMAC_SIZE_V8;
2951 else if (iwl_mvm_is_adaptive_dwell_supported(mvm))
2952 base_size = IWL_SCAN_REQ_UMAC_SIZE_V7;
2953 else if (iwl_mvm_cdb_scan_api(mvm))
2954 base_size = IWL_SCAN_REQ_UMAC_SIZE_V6;
2955 else
2956 base_size = IWL_SCAN_REQ_UMAC_SIZE_V1;
2957
2958 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2959 if (iwl_mvm_is_scan_ext_chan_supported(mvm))
2960 tail_size = sizeof(struct iwl_scan_req_umac_tail_v2);
2961 else
2962 tail_size = sizeof(struct iwl_scan_req_umac_tail_v1);
2963
2964 return base_size +
2965 sizeof(struct iwl_scan_channel_cfg_umac) *
2966 mvm->fw->ucode_capa.n_scan_channels +
2967 tail_size;
2968 }
2969 return sizeof(struct iwl_scan_req_lmac) +
2970 sizeof(struct iwl_scan_channel_cfg_lmac) *
2971 mvm->fw->ucode_capa.n_scan_channels +
2972 sizeof(struct iwl_scan_probe_req_v1);
2973}
2974
2975/*
2976 * This function is used in nic restart flow, to inform mac80211 about scans
2977 * that was aborted by restart flow or by an assert.
2978 */
2979void iwl_mvm_report_scan_aborted(struct iwl_mvm *mvm)
2980{
2981 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2982 int uid, i;
2983
2984 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_REGULAR);
2985 if (uid >= 0) {
2986 struct cfg80211_scan_info info = {
2987 .aborted = true,
2988 };
2989
2990 cancel_delayed_work(&mvm->scan_timeout_dwork);
2991
2992 ieee80211_scan_completed(mvm->hw, &info);
2993 mvm->scan_uid_status[uid] = 0;
2994 }
2995 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_SCHED);
2996 if (uid >= 0) {
2997 /* Sched scan will be restarted by mac80211 in
2998 * restart_hw, so do not report if FW is about to be
2999 * restarted.
3000 */
3001 if (!mvm->fw_restart)
3002 ieee80211_sched_scan_stopped(mvm->hw);
3003 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
3004 mvm->scan_uid_status[uid] = 0;
3005 }
3006 uid = iwl_mvm_scan_uid_by_status(mvm,
3007 IWL_MVM_SCAN_STOPPING_REGULAR);
3008 if (uid >= 0)
3009 mvm->scan_uid_status[uid] = 0;
3010
3011 uid = iwl_mvm_scan_uid_by_status(mvm,
3012 IWL_MVM_SCAN_STOPPING_SCHED);
3013 if (uid >= 0)
3014 mvm->scan_uid_status[uid] = 0;
3015
3016 /* We shouldn't have any UIDs still set. Loop over all the
3017 * UIDs to make sure there's nothing left there and warn if
3018 * any is found.
3019 */
3020 for (i = 0; i < mvm->max_scans; i++) {
3021 if (WARN_ONCE(mvm->scan_uid_status[i],
3022 "UMAC scan UID %d status was not cleaned\n",
3023 i))
3024 mvm->scan_uid_status[i] = 0;
3025 }
3026 } else {
3027 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) {
3028 struct cfg80211_scan_info info = {
3029 .aborted = true,
3030 };
3031
3032 cancel_delayed_work(&mvm->scan_timeout_dwork);
3033 ieee80211_scan_completed(mvm->hw, &info);
3034 }
3035
3036 /* Sched scan will be restarted by mac80211 in
3037 * restart_hw, so do not report if FW is about to be
3038 * restarted.
3039 */
3040 if ((mvm->scan_status & IWL_MVM_SCAN_SCHED) &&
3041 !mvm->fw_restart) {
3042 ieee80211_sched_scan_stopped(mvm->hw);
3043 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
3044 }
3045 }
3046}
3047
3048int iwl_mvm_scan_stop(struct iwl_mvm *mvm, int type, bool notify)
3049{
3050 int ret;
3051
3052 if (!(mvm->scan_status & type))
3053 return 0;
3054
3055 if (iwl_mvm_is_radio_killed(mvm)) {
3056 ret = 0;
3057 goto out;
3058 }
3059
3060 ret = iwl_mvm_scan_stop_wait(mvm, type);
3061 if (!ret)
3062 mvm->scan_status |= type << IWL_MVM_SCAN_STOPPING_SHIFT;
3063out:
3064 /* Clear the scan status so the next scan requests will
3065 * succeed and mark the scan as stopping, so that the Rx
3066 * handler doesn't do anything, as the scan was stopped from
3067 * above.
3068 */
3069 mvm->scan_status &= ~type;
3070
3071 if (type == IWL_MVM_SCAN_REGULAR) {
3072 cancel_delayed_work(&mvm->scan_timeout_dwork);
3073 if (notify) {
3074 struct cfg80211_scan_info info = {
3075 .aborted = true,
3076 };
3077
3078 ieee80211_scan_completed(mvm->hw, &info);
3079 }
3080 } else if (notify) {
3081 ieee80211_sched_scan_stopped(mvm->hw);
3082 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
3083 }
3084
3085 return ret;
3086}