1 /******************************************************************************
2 *
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
5 *
6 * GPL LICENSE SUMMARY
7 *
8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
10 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
11 * Copyright(c) 2018 - 2019 Intel Corporation
12 *
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of version 2 of the GNU General Public License as
15 * published by the Free Software Foundation.
16 *
17 * This program is distributed in the hope that it will be useful, but
18 * WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * General Public License for more details.
21 *
22 * The full GNU General Public License is included in this distribution
23 * in the file called COPYING.
24 *
25 * Contact Information:
26 * Intel Linux Wireless <linuxwifi@intel.com>
27 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
28 *
29 * BSD LICENSE
30 *
31 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
32 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
33 * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
34 * Copyright(c) 2018 - 2019 Intel Corporation
35 * All rights reserved.
36 *
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions
39 * are met:
40 *
41 * * Redistributions of source code must retain the above copyright
42 * notice, this list of conditions and the following disclaimer.
43 * * Redistributions in binary form must reproduce the above copyright
44 * notice, this list of conditions and the following disclaimer in
45 * the documentation and/or other materials provided with the
46 * distribution.
47 * * Neither the name Intel Corporation nor the names of its
48 * contributors may be used to endorse or promote products derived
49 * from this software without specific prior written permission.
50 *
51 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
52 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
53 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
54 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
55 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
56 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
57 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
58 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
59 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
60 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
61 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
62 *
63 *****************************************************************************/
64
65 #include <linux/etherdevice.h>
66 #include <net/mac80211.h>
67
68 #include "mvm.h"
69 #include "fw/api/scan.h"
70 #include "iwl-io.h"
71
72 #define IWL_DENSE_EBS_SCAN_RATIO 5
73 #define IWL_SPARSE_EBS_SCAN_RATIO 1
74
75 #define IWL_SCAN_DWELL_ACTIVE 10
76 #define IWL_SCAN_DWELL_PASSIVE 110
77 #define IWL_SCAN_DWELL_FRAGMENTED 44
78 #define IWL_SCAN_DWELL_EXTENDED 90
79 #define IWL_SCAN_NUM_OF_FRAGS 3
80 #define IWL_SCAN_LAST_2_4_CHN 14
81
82 /* adaptive dwell max budget time [TU] for full scan */
83 #define IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN 300
84 /* adaptive dwell max budget time [TU] for directed scan */
85 #define IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN 100
86 /* adaptive dwell default high band APs number */
87 #define IWL_SCAN_ADWELL_DEFAULT_HB_N_APS 8
88 /* adaptive dwell default low band APs number */
89 #define IWL_SCAN_ADWELL_DEFAULT_LB_N_APS 2
90 /* adaptive dwell default APs number in social channels (1, 6, 11) */
91 #define IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL 10
92 /* number of scan channels */
93 #define IWL_SCAN_NUM_CHANNELS 112
94 /* adaptive dwell number of APs override mask for p2p friendly GO */
95 #define IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY_BIT BIT(20)
96 /* adaptive dwell number of APs override mask for social channels */
97 #define IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS_BIT BIT(21)
98 /* adaptive dwell number of APs override for p2p friendly GO channels */
99 #define IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY 10
100 /* adaptive dwell number of APs override for social channels */
101 #define IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS 2
102
103 struct iwl_mvm_scan_timing_params {
104 u32 suspend_time;
105 u32 max_out_time;
106 };
107
108 static struct iwl_mvm_scan_timing_params scan_timing[] = {
109 [IWL_SCAN_TYPE_UNASSOC] = {
110 .suspend_time = 0,
111 .max_out_time = 0,
112 },
113 [IWL_SCAN_TYPE_WILD] = {
114 .suspend_time = 30,
115 .max_out_time = 120,
116 },
117 [IWL_SCAN_TYPE_MILD] = {
118 .suspend_time = 120,
119 .max_out_time = 120,
120 },
121 [IWL_SCAN_TYPE_FRAGMENTED] = {
122 .suspend_time = 95,
123 .max_out_time = 44,
124 },
125 [IWL_SCAN_TYPE_FAST_BALANCE] = {
126 .suspend_time = 30,
127 .max_out_time = 37,
128 },
129 };
130
131 struct iwl_mvm_scan_params {
132 /* For CDB this is low band scan type, for non-CDB - type. */
133 enum iwl_mvm_scan_type type;
134 enum iwl_mvm_scan_type hb_type;
135 u32 n_channels;
136 u16 delay;
137 int n_ssids;
138 struct cfg80211_ssid *ssids;
139 struct ieee80211_channel **channels;
140 u32 flags;
141 u8 *mac_addr;
142 u8 *mac_addr_mask;
143 bool no_cck;
144 bool pass_all;
145 int n_match_sets;
146 struct iwl_scan_probe_req preq;
147 struct cfg80211_match_set *match_sets;
148 int n_scan_plans;
149 struct cfg80211_sched_scan_plan *scan_plans;
150 bool iter_notif;
151 };
152
iwl_mvm_get_scan_req_umac_data(struct iwl_mvm * mvm)153 static inline void *iwl_mvm_get_scan_req_umac_data(struct iwl_mvm *mvm)
154 {
155 struct iwl_scan_req_umac *cmd = mvm->scan_cmd;
156
157 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm))
158 return (void *)&cmd->v8.data;
159
160 if (iwl_mvm_is_adaptive_dwell_supported(mvm))
161 return (void *)&cmd->v7.data;
162
163 if (iwl_mvm_cdb_scan_api(mvm))
164 return (void *)&cmd->v6.data;
165
166 return (void *)&cmd->v1.data;
167 }
168
169 static inline struct iwl_scan_umac_chan_param *
iwl_mvm_get_scan_req_umac_channel(struct iwl_mvm * mvm)170 iwl_mvm_get_scan_req_umac_channel(struct iwl_mvm *mvm)
171 {
172 struct iwl_scan_req_umac *cmd = mvm->scan_cmd;
173
174 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm))
175 return &cmd->v8.channel;
176
177 if (iwl_mvm_is_adaptive_dwell_supported(mvm))
178 return &cmd->v7.channel;
179
180 if (iwl_mvm_cdb_scan_api(mvm))
181 return &cmd->v6.channel;
182
183 return &cmd->v1.channel;
184 }
185
iwl_mvm_scan_rx_ant(struct iwl_mvm * mvm)186 static u8 iwl_mvm_scan_rx_ant(struct iwl_mvm *mvm)
187 {
188 if (mvm->scan_rx_ant != ANT_NONE)
189 return mvm->scan_rx_ant;
190 return iwl_mvm_get_valid_rx_ant(mvm);
191 }
192
iwl_mvm_scan_rx_chain(struct iwl_mvm * mvm)193 static inline __le16 iwl_mvm_scan_rx_chain(struct iwl_mvm *mvm)
194 {
195 u16 rx_chain;
196 u8 rx_ant;
197
198 rx_ant = iwl_mvm_scan_rx_ant(mvm);
199 rx_chain = rx_ant << PHY_RX_CHAIN_VALID_POS;
200 rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_MIMO_SEL_POS;
201 rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_SEL_POS;
202 rx_chain |= 0x1 << PHY_RX_CHAIN_DRIVER_FORCE_POS;
203 return cpu_to_le16(rx_chain);
204 }
205
206 static inline __le32
iwl_mvm_scan_rate_n_flags(struct iwl_mvm * mvm,enum nl80211_band band,bool no_cck)207 iwl_mvm_scan_rate_n_flags(struct iwl_mvm *mvm, enum nl80211_band band,
208 bool no_cck)
209 {
210 u32 tx_ant;
211
212 iwl_mvm_toggle_tx_ant(mvm, &mvm->scan_last_antenna_idx);
213 tx_ant = BIT(mvm->scan_last_antenna_idx) << RATE_MCS_ANT_POS;
214
215 if (band == NL80211_BAND_2GHZ && !no_cck)
216 return cpu_to_le32(IWL_RATE_1M_PLCP | RATE_MCS_CCK_MSK |
217 tx_ant);
218 else
219 return cpu_to_le32(IWL_RATE_6M_PLCP | tx_ant);
220 }
221
iwl_mvm_scan_condition_iterator(void * data,u8 * mac,struct ieee80211_vif * vif)222 static void iwl_mvm_scan_condition_iterator(void *data, u8 *mac,
223 struct ieee80211_vif *vif)
224 {
225 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
226 int *global_cnt = data;
227
228 if (vif->type != NL80211_IFTYPE_P2P_DEVICE && mvmvif->phy_ctxt &&
229 mvmvif->phy_ctxt->id < NUM_PHY_CTX)
230 *global_cnt += 1;
231 }
232
iwl_mvm_get_traffic_load(struct iwl_mvm * mvm)233 static enum iwl_mvm_traffic_load iwl_mvm_get_traffic_load(struct iwl_mvm *mvm)
234 {
235 return mvm->tcm.result.global_load;
236 }
237
238 static enum iwl_mvm_traffic_load
iwl_mvm_get_traffic_load_band(struct iwl_mvm * mvm,enum nl80211_band band)239 iwl_mvm_get_traffic_load_band(struct iwl_mvm *mvm, enum nl80211_band band)
240 {
241 return mvm->tcm.result.band_load[band];
242 }
243
244 struct iwl_is_dcm_with_go_iterator_data {
245 struct ieee80211_vif *current_vif;
246 bool is_dcm_with_p2p_go;
247 };
248
iwl_mvm_is_dcm_with_go_iterator(void * _data,u8 * mac,struct ieee80211_vif * vif)249 static void iwl_mvm_is_dcm_with_go_iterator(void *_data, u8 *mac,
250 struct ieee80211_vif *vif)
251 {
252 struct iwl_is_dcm_with_go_iterator_data *data = _data;
253 struct iwl_mvm_vif *other_mvmvif = iwl_mvm_vif_from_mac80211(vif);
254 struct iwl_mvm_vif *curr_mvmvif =
255 iwl_mvm_vif_from_mac80211(data->current_vif);
256
257 /* exclude the given vif */
258 if (vif == data->current_vif)
259 return;
260
261 if (vif->type == NL80211_IFTYPE_AP && vif->p2p &&
262 other_mvmvif->phy_ctxt && curr_mvmvif->phy_ctxt &&
263 other_mvmvif->phy_ctxt->id != curr_mvmvif->phy_ctxt->id)
264 data->is_dcm_with_p2p_go = true;
265 }
266
267 static enum
_iwl_mvm_get_scan_type(struct iwl_mvm * mvm,struct ieee80211_vif * vif,enum iwl_mvm_traffic_load load,bool low_latency)268 iwl_mvm_scan_type _iwl_mvm_get_scan_type(struct iwl_mvm *mvm,
269 struct ieee80211_vif *vif,
270 enum iwl_mvm_traffic_load load,
271 bool low_latency)
272 {
273 int global_cnt = 0;
274
275 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
276 IEEE80211_IFACE_ITER_NORMAL,
277 iwl_mvm_scan_condition_iterator,
278 &global_cnt);
279 if (!global_cnt)
280 return IWL_SCAN_TYPE_UNASSOC;
281
282 if (fw_has_api(&mvm->fw->ucode_capa,
283 IWL_UCODE_TLV_API_FRAGMENTED_SCAN)) {
284 if ((load == IWL_MVM_TRAFFIC_HIGH || low_latency) &&
285 (!vif || vif->type != NL80211_IFTYPE_P2P_DEVICE))
286 return IWL_SCAN_TYPE_FRAGMENTED;
287
288 /* in case of DCM with GO where BSS DTIM interval < 220msec
289 * set all scan requests as fast-balance scan
290 * */
291 if (vif && vif->type == NL80211_IFTYPE_STATION &&
292 vif->bss_conf.dtim_period < 220) {
293 struct iwl_is_dcm_with_go_iterator_data data = {
294 .current_vif = vif,
295 .is_dcm_with_p2p_go = false,
296 };
297
298 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
299 IEEE80211_IFACE_ITER_NORMAL,
300 iwl_mvm_is_dcm_with_go_iterator,
301 &data);
302 if (data.is_dcm_with_p2p_go)
303 return IWL_SCAN_TYPE_FAST_BALANCE;
304 }
305 }
306
307 if (load >= IWL_MVM_TRAFFIC_MEDIUM || low_latency)
308 return IWL_SCAN_TYPE_MILD;
309
310 return IWL_SCAN_TYPE_WILD;
311 }
312
313 static enum
iwl_mvm_get_scan_type(struct iwl_mvm * mvm,struct ieee80211_vif * vif)314 iwl_mvm_scan_type iwl_mvm_get_scan_type(struct iwl_mvm *mvm,
315 struct ieee80211_vif *vif)
316 {
317 enum iwl_mvm_traffic_load load;
318 bool low_latency;
319
320 load = iwl_mvm_get_traffic_load(mvm);
321 low_latency = iwl_mvm_low_latency(mvm);
322
323 return _iwl_mvm_get_scan_type(mvm, vif, load, low_latency);
324 }
325
326 static enum
iwl_mvm_get_scan_type_band(struct iwl_mvm * mvm,struct ieee80211_vif * vif,enum nl80211_band band)327 iwl_mvm_scan_type iwl_mvm_get_scan_type_band(struct iwl_mvm *mvm,
328 struct ieee80211_vif *vif,
329 enum nl80211_band band)
330 {
331 enum iwl_mvm_traffic_load load;
332 bool low_latency;
333
334 load = iwl_mvm_get_traffic_load_band(mvm, band);
335 low_latency = iwl_mvm_low_latency_band(mvm, band);
336
337 return _iwl_mvm_get_scan_type(mvm, vif, load, low_latency);
338 }
339
iwl_mvm_rrm_scan_needed(struct iwl_mvm * mvm)340 static inline bool iwl_mvm_rrm_scan_needed(struct iwl_mvm *mvm)
341 {
342 /* require rrm scan whenever the fw supports it */
343 return fw_has_capa(&mvm->fw->ucode_capa,
344 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT);
345 }
346
iwl_mvm_max_scan_ie_fw_cmd_room(struct iwl_mvm * mvm)347 static int iwl_mvm_max_scan_ie_fw_cmd_room(struct iwl_mvm *mvm)
348 {
349 int max_probe_len;
350
351 max_probe_len = SCAN_OFFLOAD_PROBE_REQ_SIZE;
352
353 /* we create the 802.11 header and SSID element */
354 max_probe_len -= 24 + 2;
355
356 /* DS parameter set element is added on 2.4GHZ band if required */
357 if (iwl_mvm_rrm_scan_needed(mvm))
358 max_probe_len -= 3;
359
360 return max_probe_len;
361 }
362
iwl_mvm_max_scan_ie_len(struct iwl_mvm * mvm)363 int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm)
364 {
365 int max_ie_len = iwl_mvm_max_scan_ie_fw_cmd_room(mvm);
366
367 /* TODO: [BUG] This function should return the maximum allowed size of
368 * scan IEs, however the LMAC scan api contains both 2GHZ and 5GHZ IEs
369 * in the same command. So the correct implementation of this function
370 * is just iwl_mvm_max_scan_ie_fw_cmd_room() / 2. Currently the scan
371 * command has only 512 bytes and it would leave us with about 240
372 * bytes for scan IEs, which is clearly not enough. So meanwhile
373 * we will report an incorrect value. This may result in a failure to
374 * issue a scan in unified_scan_lmac and unified_sched_scan_lmac
375 * functions with -ENOBUFS, if a large enough probe will be provided.
376 */
377 return max_ie_len;
378 }
379
iwl_mvm_rx_lmac_scan_iter_complete_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)380 void iwl_mvm_rx_lmac_scan_iter_complete_notif(struct iwl_mvm *mvm,
381 struct iwl_rx_cmd_buffer *rxb)
382 {
383 struct iwl_rx_packet *pkt = rxb_addr(rxb);
384 struct iwl_lmac_scan_complete_notif *notif = (void *)pkt->data;
385
386 IWL_DEBUG_SCAN(mvm,
387 "Scan offload iteration complete: status=0x%x scanned channels=%d\n",
388 notif->status, notif->scanned_channels);
389
390 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) {
391 IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n");
392 ieee80211_sched_scan_results(mvm->hw);
393 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED;
394 }
395 }
396
iwl_mvm_rx_scan_match_found(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)397 void iwl_mvm_rx_scan_match_found(struct iwl_mvm *mvm,
398 struct iwl_rx_cmd_buffer *rxb)
399 {
400 IWL_DEBUG_SCAN(mvm, "Scheduled scan results\n");
401 ieee80211_sched_scan_results(mvm->hw);
402 }
403
iwl_mvm_ebs_status_str(enum iwl_scan_ebs_status status)404 static const char *iwl_mvm_ebs_status_str(enum iwl_scan_ebs_status status)
405 {
406 switch (status) {
407 case IWL_SCAN_EBS_SUCCESS:
408 return "successful";
409 case IWL_SCAN_EBS_INACTIVE:
410 return "inactive";
411 case IWL_SCAN_EBS_FAILED:
412 case IWL_SCAN_EBS_CHAN_NOT_FOUND:
413 default:
414 return "failed";
415 }
416 }
417
iwl_mvm_rx_lmac_scan_complete_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)418 void iwl_mvm_rx_lmac_scan_complete_notif(struct iwl_mvm *mvm,
419 struct iwl_rx_cmd_buffer *rxb)
420 {
421 struct iwl_rx_packet *pkt = rxb_addr(rxb);
422 struct iwl_periodic_scan_complete *scan_notif = (void *)pkt->data;
423 bool aborted = (scan_notif->status == IWL_SCAN_OFFLOAD_ABORTED);
424
425 /* If this happens, the firmware has mistakenly sent an LMAC
426 * notification during UMAC scans -- warn and ignore it.
427 */
428 if (WARN_ON_ONCE(fw_has_capa(&mvm->fw->ucode_capa,
429 IWL_UCODE_TLV_CAPA_UMAC_SCAN)))
430 return;
431
432 /* scan status must be locked for proper checking */
433 lockdep_assert_held(&mvm->mutex);
434
435 /* We first check if we were stopping a scan, in which case we
436 * just clear the stopping flag. Then we check if it was a
437 * firmware initiated stop, in which case we need to inform
438 * mac80211.
439 * Note that we can have a stopping and a running scan
440 * simultaneously, but we can't have two different types of
441 * scans stopping or running at the same time (since LMAC
442 * doesn't support it).
443 */
444
445 if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_SCHED) {
446 WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR);
447
448 IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n",
449 aborted ? "aborted" : "completed",
450 iwl_mvm_ebs_status_str(scan_notif->ebs_status));
451 IWL_DEBUG_SCAN(mvm,
452 "Last line %d, Last iteration %d, Time after last iteration %d\n",
453 scan_notif->last_schedule_line,
454 scan_notif->last_schedule_iteration,
455 __le32_to_cpu(scan_notif->time_after_last_iter));
456
457 mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_SCHED;
458 } else if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR) {
459 IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s\n",
460 aborted ? "aborted" : "completed",
461 iwl_mvm_ebs_status_str(scan_notif->ebs_status));
462
463 mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_REGULAR;
464 } else if (mvm->scan_status & IWL_MVM_SCAN_SCHED) {
465 WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_REGULAR);
466
467 IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n",
468 aborted ? "aborted" : "completed",
469 iwl_mvm_ebs_status_str(scan_notif->ebs_status));
470 IWL_DEBUG_SCAN(mvm,
471 "Last line %d, Last iteration %d, Time after last iteration %d (FW)\n",
472 scan_notif->last_schedule_line,
473 scan_notif->last_schedule_iteration,
474 __le32_to_cpu(scan_notif->time_after_last_iter));
475
476 mvm->scan_status &= ~IWL_MVM_SCAN_SCHED;
477 ieee80211_sched_scan_stopped(mvm->hw);
478 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
479 } else if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) {
480 struct cfg80211_scan_info info = {
481 .aborted = aborted,
482 };
483
484 IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s (FW)\n",
485 aborted ? "aborted" : "completed",
486 iwl_mvm_ebs_status_str(scan_notif->ebs_status));
487
488 mvm->scan_status &= ~IWL_MVM_SCAN_REGULAR;
489 ieee80211_scan_completed(mvm->hw, &info);
490 cancel_delayed_work(&mvm->scan_timeout_dwork);
491 iwl_mvm_resume_tcm(mvm);
492 } else {
493 IWL_ERR(mvm,
494 "got scan complete notification but no scan is running\n");
495 }
496
497 mvm->last_ebs_successful =
498 scan_notif->ebs_status == IWL_SCAN_EBS_SUCCESS ||
499 scan_notif->ebs_status == IWL_SCAN_EBS_INACTIVE;
500 }
501
iwl_ssid_exist(u8 * ssid,u8 ssid_len,struct iwl_ssid_ie * ssid_list)502 static int iwl_ssid_exist(u8 *ssid, u8 ssid_len, struct iwl_ssid_ie *ssid_list)
503 {
504 int i;
505
506 for (i = 0; i < PROBE_OPTION_MAX; i++) {
507 if (!ssid_list[i].len)
508 break;
509 if (ssid_list[i].len == ssid_len &&
510 !memcmp(ssid_list->ssid, ssid, ssid_len))
511 return i;
512 }
513 return -1;
514 }
515
516 /* We insert the SSIDs in an inverted order, because the FW will
517 * invert it back.
518 */
iwl_scan_build_ssids(struct iwl_mvm_scan_params * params,struct iwl_ssid_ie * ssids,u32 * ssid_bitmap)519 static void iwl_scan_build_ssids(struct iwl_mvm_scan_params *params,
520 struct iwl_ssid_ie *ssids,
521 u32 *ssid_bitmap)
522 {
523 int i, j;
524 int index;
525 u32 tmp_bitmap = 0;
526
527 /*
528 * copy SSIDs from match list.
529 * iwl_config_sched_scan_profiles() uses the order of these ssids to
530 * config match list.
531 */
532 for (i = 0, j = params->n_match_sets - 1;
533 j >= 0 && i < PROBE_OPTION_MAX;
534 i++, j--) {
535 /* skip empty SSID matchsets */
536 if (!params->match_sets[j].ssid.ssid_len)
537 continue;
538 ssids[i].id = WLAN_EID_SSID;
539 ssids[i].len = params->match_sets[j].ssid.ssid_len;
540 memcpy(ssids[i].ssid, params->match_sets[j].ssid.ssid,
541 ssids[i].len);
542 }
543
544 /* add SSIDs from scan SSID list */
545 for (j = params->n_ssids - 1;
546 j >= 0 && i < PROBE_OPTION_MAX;
547 i++, j--) {
548 index = iwl_ssid_exist(params->ssids[j].ssid,
549 params->ssids[j].ssid_len,
550 ssids);
551 if (index < 0) {
552 ssids[i].id = WLAN_EID_SSID;
553 ssids[i].len = params->ssids[j].ssid_len;
554 memcpy(ssids[i].ssid, params->ssids[j].ssid,
555 ssids[i].len);
556 tmp_bitmap |= BIT(i);
557 } else {
558 tmp_bitmap |= BIT(index);
559 }
560 }
561 if (ssid_bitmap)
562 *ssid_bitmap = tmp_bitmap;
563 }
564
565 static int
iwl_mvm_config_sched_scan_profiles(struct iwl_mvm * mvm,struct cfg80211_sched_scan_request * req)566 iwl_mvm_config_sched_scan_profiles(struct iwl_mvm *mvm,
567 struct cfg80211_sched_scan_request *req)
568 {
569 struct iwl_scan_offload_profile *profile;
570 struct iwl_scan_offload_profile_cfg_v1 *profile_cfg_v1;
571 struct iwl_scan_offload_blacklist *blacklist;
572 struct iwl_scan_offload_profile_cfg_data *data;
573 int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw);
574 int profile_cfg_size = sizeof(*data) +
575 sizeof(*profile) * max_profiles;
576 struct iwl_host_cmd cmd = {
577 .id = SCAN_OFFLOAD_UPDATE_PROFILES_CMD,
578 .len[1] = profile_cfg_size,
579 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
580 .dataflags[1] = IWL_HCMD_DFL_NOCOPY,
581 };
582 int blacklist_len;
583 int i;
584 int ret;
585
586 if (WARN_ON(req->n_match_sets > max_profiles))
587 return -EIO;
588
589 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SHORT_BL)
590 blacklist_len = IWL_SCAN_SHORT_BLACKLIST_LEN;
591 else
592 blacklist_len = IWL_SCAN_MAX_BLACKLIST_LEN;
593
594 blacklist = kcalloc(blacklist_len, sizeof(*blacklist), GFP_KERNEL);
595 if (!blacklist)
596 return -ENOMEM;
597
598 profile_cfg_v1 = kzalloc(profile_cfg_size, GFP_KERNEL);
599 if (!profile_cfg_v1) {
600 ret = -ENOMEM;
601 goto free_blacklist;
602 }
603
604 cmd.data[0] = blacklist;
605 cmd.len[0] = sizeof(*blacklist) * blacklist_len;
606 cmd.data[1] = profile_cfg_v1;
607
608 /* if max_profile is MAX_PROFILES_V2, we have the new API */
609 if (max_profiles == IWL_SCAN_MAX_PROFILES_V2) {
610 struct iwl_scan_offload_profile_cfg *profile_cfg =
611 (struct iwl_scan_offload_profile_cfg *)profile_cfg_v1;
612
613 data = &profile_cfg->data;
614 } else {
615 data = &profile_cfg_v1->data;
616 }
617
618 /* No blacklist configuration */
619 data->num_profiles = req->n_match_sets;
620 data->active_clients = SCAN_CLIENT_SCHED_SCAN;
621 data->pass_match = SCAN_CLIENT_SCHED_SCAN;
622 data->match_notify = SCAN_CLIENT_SCHED_SCAN;
623
624 if (!req->n_match_sets || !req->match_sets[0].ssid.ssid_len)
625 data->any_beacon_notify = SCAN_CLIENT_SCHED_SCAN;
626
627 for (i = 0; i < req->n_match_sets; i++) {
628 profile = &profile_cfg_v1->profiles[i];
629 profile->ssid_index = i;
630 /* Support any cipher and auth algorithm */
631 profile->unicast_cipher = 0xff;
632 profile->auth_alg = 0xff;
633 profile->network_type = IWL_NETWORK_TYPE_ANY;
634 profile->band_selection = IWL_SCAN_OFFLOAD_SELECT_ANY;
635 profile->client_bitmap = SCAN_CLIENT_SCHED_SCAN;
636 }
637
638 IWL_DEBUG_SCAN(mvm, "Sending scheduled scan profile config\n");
639
640 ret = iwl_mvm_send_cmd(mvm, &cmd);
641 kfree(profile_cfg_v1);
642 free_blacklist:
643 kfree(blacklist);
644
645 return ret;
646 }
647
iwl_mvm_scan_pass_all(struct iwl_mvm * mvm,struct cfg80211_sched_scan_request * req)648 static bool iwl_mvm_scan_pass_all(struct iwl_mvm *mvm,
649 struct cfg80211_sched_scan_request *req)
650 {
651 if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) {
652 IWL_DEBUG_SCAN(mvm,
653 "Sending scheduled scan with filtering, n_match_sets %d\n",
654 req->n_match_sets);
655 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
656 return false;
657 }
658
659 IWL_DEBUG_SCAN(mvm, "Sending Scheduled scan without filtering\n");
660
661 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED;
662 return true;
663 }
664
iwl_mvm_lmac_scan_abort(struct iwl_mvm * mvm)665 static int iwl_mvm_lmac_scan_abort(struct iwl_mvm *mvm)
666 {
667 int ret;
668 struct iwl_host_cmd cmd = {
669 .id = SCAN_OFFLOAD_ABORT_CMD,
670 };
671 u32 status = CAN_ABORT_STATUS;
672
673 ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status);
674 if (ret)
675 return ret;
676
677 if (status != CAN_ABORT_STATUS) {
678 /*
679 * The scan abort will return 1 for success or
680 * 2 for "failure". A failure condition can be
681 * due to simply not being in an active scan which
682 * can occur if we send the scan abort before the
683 * microcode has notified us that a scan is completed.
684 */
685 IWL_DEBUG_SCAN(mvm, "SCAN OFFLOAD ABORT ret %d.\n", status);
686 ret = -ENOENT;
687 }
688
689 return ret;
690 }
691
iwl_mvm_scan_fill_tx_cmd(struct iwl_mvm * mvm,struct iwl_scan_req_tx_cmd * tx_cmd,bool no_cck)692 static void iwl_mvm_scan_fill_tx_cmd(struct iwl_mvm *mvm,
693 struct iwl_scan_req_tx_cmd *tx_cmd,
694 bool no_cck)
695 {
696 tx_cmd[0].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL |
697 TX_CMD_FLG_BT_DIS);
698 tx_cmd[0].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm,
699 NL80211_BAND_2GHZ,
700 no_cck);
701
702 if (iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP,
703 ADD_STA,
704 0) < 12) {
705 tx_cmd[0].sta_id = mvm->aux_sta.sta_id;
706 tx_cmd[1].sta_id = mvm->aux_sta.sta_id;
707
708 /*
709 * Fw doesn't use this sta anymore, pending deprecation via HOST API
710 * change
711 */
712 } else {
713 tx_cmd[0].sta_id = 0xff;
714 tx_cmd[1].sta_id = 0xff;
715 }
716
717 tx_cmd[1].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL |
718 TX_CMD_FLG_BT_DIS);
719
720 tx_cmd[1].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm,
721 NL80211_BAND_5GHZ,
722 no_cck);
723 }
724
725 static void
iwl_mvm_lmac_scan_cfg_channels(struct iwl_mvm * mvm,struct ieee80211_channel ** channels,int n_channels,u32 ssid_bitmap,struct iwl_scan_req_lmac * cmd)726 iwl_mvm_lmac_scan_cfg_channels(struct iwl_mvm *mvm,
727 struct ieee80211_channel **channels,
728 int n_channels, u32 ssid_bitmap,
729 struct iwl_scan_req_lmac *cmd)
730 {
731 struct iwl_scan_channel_cfg_lmac *channel_cfg = (void *)&cmd->data;
732 int i;
733
734 for (i = 0; i < n_channels; i++) {
735 channel_cfg[i].channel_num =
736 cpu_to_le16(channels[i]->hw_value);
737 channel_cfg[i].iter_count = cpu_to_le16(1);
738 channel_cfg[i].iter_interval = 0;
739 channel_cfg[i].flags =
740 cpu_to_le32(IWL_UNIFIED_SCAN_CHANNEL_PARTIAL |
741 ssid_bitmap);
742 }
743 }
744
iwl_mvm_copy_and_insert_ds_elem(struct iwl_mvm * mvm,const u8 * ies,size_t len,u8 * const pos)745 static u8 *iwl_mvm_copy_and_insert_ds_elem(struct iwl_mvm *mvm, const u8 *ies,
746 size_t len, u8 *const pos)
747 {
748 static const u8 before_ds_params[] = {
749 WLAN_EID_SSID,
750 WLAN_EID_SUPP_RATES,
751 WLAN_EID_REQUEST,
752 WLAN_EID_EXT_SUPP_RATES,
753 };
754 size_t offs;
755 u8 *newpos = pos;
756
757 if (!iwl_mvm_rrm_scan_needed(mvm)) {
758 memcpy(newpos, ies, len);
759 return newpos + len;
760 }
761
762 offs = ieee80211_ie_split(ies, len,
763 before_ds_params,
764 ARRAY_SIZE(before_ds_params),
765 0);
766
767 memcpy(newpos, ies, offs);
768 newpos += offs;
769
770 /* Add a placeholder for DS Parameter Set element */
771 *newpos++ = WLAN_EID_DS_PARAMS;
772 *newpos++ = 1;
773 *newpos++ = 0;
774
775 memcpy(newpos, ies + offs, len - offs);
776 newpos += len - offs;
777
778 return newpos;
779 }
780
781 #define WFA_TPC_IE_LEN 9
782
iwl_mvm_add_tpc_report_ie(u8 * pos)783 static void iwl_mvm_add_tpc_report_ie(u8 *pos)
784 {
785 pos[0] = WLAN_EID_VENDOR_SPECIFIC;
786 pos[1] = WFA_TPC_IE_LEN - 2;
787 pos[2] = (WLAN_OUI_MICROSOFT >> 16) & 0xff;
788 pos[3] = (WLAN_OUI_MICROSOFT >> 8) & 0xff;
789 pos[4] = WLAN_OUI_MICROSOFT & 0xff;
790 pos[5] = WLAN_OUI_TYPE_MICROSOFT_TPC;
791 pos[6] = 0;
792 /* pos[7] - tx power will be inserted by the FW */
793 pos[7] = 0;
794 pos[8] = 0;
795 }
796
797 static void
iwl_mvm_build_scan_probe(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct ieee80211_scan_ies * ies,struct iwl_mvm_scan_params * params)798 iwl_mvm_build_scan_probe(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
799 struct ieee80211_scan_ies *ies,
800 struct iwl_mvm_scan_params *params)
801 {
802 struct ieee80211_mgmt *frame = (void *)params->preq.buf;
803 u8 *pos, *newpos;
804 const u8 *mac_addr = params->flags & NL80211_SCAN_FLAG_RANDOM_ADDR ?
805 params->mac_addr : NULL;
806
807 /*
808 * Unfortunately, right now the offload scan doesn't support randomising
809 * within the firmware, so until the firmware API is ready we implement
810 * it in the driver. This means that the scan iterations won't really be
811 * random, only when it's restarted, but at least that helps a bit.
812 */
813 if (mac_addr)
814 get_random_mask_addr(frame->sa, mac_addr,
815 params->mac_addr_mask);
816 else
817 memcpy(frame->sa, vif->addr, ETH_ALEN);
818
819 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
820 eth_broadcast_addr(frame->da);
821 eth_broadcast_addr(frame->bssid);
822 frame->seq_ctrl = 0;
823
824 pos = frame->u.probe_req.variable;
825 *pos++ = WLAN_EID_SSID;
826 *pos++ = 0;
827
828 params->preq.mac_header.offset = 0;
829 params->preq.mac_header.len = cpu_to_le16(24 + 2);
830
831 /* Insert ds parameter set element on 2.4 GHz band */
832 newpos = iwl_mvm_copy_and_insert_ds_elem(mvm,
833 ies->ies[NL80211_BAND_2GHZ],
834 ies->len[NL80211_BAND_2GHZ],
835 pos);
836 params->preq.band_data[0].offset = cpu_to_le16(pos - params->preq.buf);
837 params->preq.band_data[0].len = cpu_to_le16(newpos - pos);
838 pos = newpos;
839
840 memcpy(pos, ies->ies[NL80211_BAND_5GHZ],
841 ies->len[NL80211_BAND_5GHZ]);
842 params->preq.band_data[1].offset = cpu_to_le16(pos - params->preq.buf);
843 params->preq.band_data[1].len =
844 cpu_to_le16(ies->len[NL80211_BAND_5GHZ]);
845 pos += ies->len[NL80211_BAND_5GHZ];
846
847 memcpy(pos, ies->common_ies, ies->common_ie_len);
848 params->preq.common_data.offset = cpu_to_le16(pos - params->preq.buf);
849
850 if (iwl_mvm_rrm_scan_needed(mvm) &&
851 !fw_has_capa(&mvm->fw->ucode_capa,
852 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) {
853 iwl_mvm_add_tpc_report_ie(pos + ies->common_ie_len);
854 params->preq.common_data.len = cpu_to_le16(ies->common_ie_len +
855 WFA_TPC_IE_LEN);
856 } else {
857 params->preq.common_data.len = cpu_to_le16(ies->common_ie_len);
858 }
859 }
860
iwl_mvm_scan_lmac_dwell(struct iwl_mvm * mvm,struct iwl_scan_req_lmac * cmd,struct iwl_mvm_scan_params * params)861 static void iwl_mvm_scan_lmac_dwell(struct iwl_mvm *mvm,
862 struct iwl_scan_req_lmac *cmd,
863 struct iwl_mvm_scan_params *params)
864 {
865 cmd->active_dwell = IWL_SCAN_DWELL_ACTIVE;
866 cmd->passive_dwell = IWL_SCAN_DWELL_PASSIVE;
867 cmd->fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED;
868 cmd->extended_dwell = IWL_SCAN_DWELL_EXTENDED;
869 cmd->max_out_time = cpu_to_le32(scan_timing[params->type].max_out_time);
870 cmd->suspend_time = cpu_to_le32(scan_timing[params->type].suspend_time);
871 cmd->scan_prio = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
872 }
873
iwl_mvm_scan_fits(struct iwl_mvm * mvm,int n_ssids,struct ieee80211_scan_ies * ies,int n_channels)874 static inline bool iwl_mvm_scan_fits(struct iwl_mvm *mvm, int n_ssids,
875 struct ieee80211_scan_ies *ies,
876 int n_channels)
877 {
878 return ((n_ssids <= PROBE_OPTION_MAX) &&
879 (n_channels <= mvm->fw->ucode_capa.n_scan_channels) &
880 (ies->common_ie_len +
881 ies->len[NL80211_BAND_2GHZ] +
882 ies->len[NL80211_BAND_5GHZ] <=
883 iwl_mvm_max_scan_ie_fw_cmd_room(mvm)));
884 }
885
iwl_mvm_scan_use_ebs(struct iwl_mvm * mvm,struct ieee80211_vif * vif)886 static inline bool iwl_mvm_scan_use_ebs(struct iwl_mvm *mvm,
887 struct ieee80211_vif *vif)
888 {
889 const struct iwl_ucode_capabilities *capa = &mvm->fw->ucode_capa;
890 bool low_latency;
891
892 if (iwl_mvm_is_cdb_supported(mvm))
893 low_latency = iwl_mvm_low_latency_band(mvm, NL80211_BAND_5GHZ);
894 else
895 low_latency = iwl_mvm_low_latency(mvm);
896
897 /* We can only use EBS if:
898 * 1. the feature is supported;
899 * 2. the last EBS was successful;
900 * 3. if only single scan, the single scan EBS API is supported;
901 * 4. it's not a p2p find operation.
902 * 5. we are not in low latency mode,
903 * or if fragmented ebs is supported by the FW
904 */
905 return ((capa->flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT) &&
906 mvm->last_ebs_successful && IWL_MVM_ENABLE_EBS &&
907 vif->type != NL80211_IFTYPE_P2P_DEVICE &&
908 (!low_latency || iwl_mvm_is_frag_ebs_supported(mvm)));
909 }
910
iwl_mvm_is_regular_scan(struct iwl_mvm_scan_params * params)911 static inline bool iwl_mvm_is_regular_scan(struct iwl_mvm_scan_params *params)
912 {
913 return params->n_scan_plans == 1 &&
914 params->scan_plans[0].iterations == 1;
915 }
916
iwl_mvm_is_scan_fragmented(enum iwl_mvm_scan_type type)917 static bool iwl_mvm_is_scan_fragmented(enum iwl_mvm_scan_type type)
918 {
919 return (type == IWL_SCAN_TYPE_FRAGMENTED ||
920 type == IWL_SCAN_TYPE_FAST_BALANCE);
921 }
922
iwl_mvm_scan_lmac_flags(struct iwl_mvm * mvm,struct iwl_mvm_scan_params * params,struct ieee80211_vif * vif)923 static int iwl_mvm_scan_lmac_flags(struct iwl_mvm *mvm,
924 struct iwl_mvm_scan_params *params,
925 struct ieee80211_vif *vif)
926 {
927 int flags = 0;
928
929 if (params->n_ssids == 0)
930 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE;
931
932 if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0)
933 flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION;
934
935 if (iwl_mvm_is_scan_fragmented(params->type))
936 flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED;
937
938 if (iwl_mvm_rrm_scan_needed(mvm) &&
939 fw_has_capa(&mvm->fw->ucode_capa,
940 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
941 flags |= IWL_MVM_LMAC_SCAN_FLAGS_RRM_ENABLED;
942
943 if (params->pass_all)
944 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL;
945 else
946 flags |= IWL_MVM_LMAC_SCAN_FLAG_MATCH;
947
948 #ifdef CONFIG_IWLWIFI_DEBUGFS
949 if (mvm->scan_iter_notif_enabled)
950 flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE;
951 #endif
952
953 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED)
954 flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE;
955
956 if (iwl_mvm_is_regular_scan(params) &&
957 vif->type != NL80211_IFTYPE_P2P_DEVICE &&
958 !iwl_mvm_is_scan_fragmented(params->type))
959 flags |= IWL_MVM_LMAC_SCAN_FLAG_EXTENDED_DWELL;
960
961 return flags;
962 }
963
964 static void
iwl_mvm_scan_set_legacy_probe_req(struct iwl_scan_probe_req_v1 * p_req,struct iwl_scan_probe_req * src_p_req)965 iwl_mvm_scan_set_legacy_probe_req(struct iwl_scan_probe_req_v1 *p_req,
966 struct iwl_scan_probe_req *src_p_req)
967 {
968 int i;
969
970 p_req->mac_header = src_p_req->mac_header;
971 for (i = 0; i < SCAN_NUM_BAND_PROBE_DATA_V_1; i++)
972 p_req->band_data[i] = src_p_req->band_data[i];
973 p_req->common_data = src_p_req->common_data;
974 memcpy(p_req->buf, src_p_req->buf, sizeof(p_req->buf));
975 }
976
iwl_mvm_scan_lmac(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_mvm_scan_params * params)977 static int iwl_mvm_scan_lmac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
978 struct iwl_mvm_scan_params *params)
979 {
980 struct iwl_scan_req_lmac *cmd = mvm->scan_cmd;
981 struct iwl_scan_probe_req_v1 *preq =
982 (void *)(cmd->data + sizeof(struct iwl_scan_channel_cfg_lmac) *
983 mvm->fw->ucode_capa.n_scan_channels);
984 u32 ssid_bitmap = 0;
985 int i;
986 u8 band;
987
988 if (WARN_ON(params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS))
989 return -EINVAL;
990
991 iwl_mvm_scan_lmac_dwell(mvm, cmd, params);
992
993 cmd->rx_chain_select = iwl_mvm_scan_rx_chain(mvm);
994 cmd->iter_num = cpu_to_le32(1);
995 cmd->n_channels = (u8)params->n_channels;
996
997 cmd->delay = cpu_to_le32(params->delay);
998
999 cmd->scan_flags = cpu_to_le32(iwl_mvm_scan_lmac_flags(mvm, params,
1000 vif));
1001
1002 band = iwl_mvm_phy_band_from_nl80211(params->channels[0]->band);
1003 cmd->flags = cpu_to_le32(band);
1004 cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP |
1005 MAC_FILTER_IN_BEACON);
1006 iwl_mvm_scan_fill_tx_cmd(mvm, cmd->tx_cmd, params->no_cck);
1007 iwl_scan_build_ssids(params, cmd->direct_scan, &ssid_bitmap);
1008
1009 /* this API uses bits 1-20 instead of 0-19 */
1010 ssid_bitmap <<= 1;
1011
1012 for (i = 0; i < params->n_scan_plans; i++) {
1013 struct cfg80211_sched_scan_plan *scan_plan =
1014 ¶ms->scan_plans[i];
1015
1016 cmd->schedule[i].delay =
1017 cpu_to_le16(scan_plan->interval);
1018 cmd->schedule[i].iterations = scan_plan->iterations;
1019 cmd->schedule[i].full_scan_mul = 1;
1020 }
1021
1022 /*
1023 * If the number of iterations of the last scan plan is set to
1024 * zero, it should run infinitely. However, this is not always the case.
1025 * For example, when regular scan is requested the driver sets one scan
1026 * plan with one iteration.
1027 */
1028 if (!cmd->schedule[i - 1].iterations)
1029 cmd->schedule[i - 1].iterations = 0xff;
1030
1031 if (iwl_mvm_scan_use_ebs(mvm, vif)) {
1032 cmd->channel_opt[0].flags =
1033 cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS |
1034 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
1035 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD);
1036 cmd->channel_opt[0].non_ebs_ratio =
1037 cpu_to_le16(IWL_DENSE_EBS_SCAN_RATIO);
1038 cmd->channel_opt[1].flags =
1039 cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS |
1040 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
1041 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD);
1042 cmd->channel_opt[1].non_ebs_ratio =
1043 cpu_to_le16(IWL_SPARSE_EBS_SCAN_RATIO);
1044 }
1045
1046 iwl_mvm_lmac_scan_cfg_channels(mvm, params->channels,
1047 params->n_channels, ssid_bitmap, cmd);
1048
1049 iwl_mvm_scan_set_legacy_probe_req(preq, ¶ms->preq);
1050
1051 return 0;
1052 }
1053
rate_to_scan_rate_flag(unsigned int rate)1054 static int rate_to_scan_rate_flag(unsigned int rate)
1055 {
1056 static const int rate_to_scan_rate[IWL_RATE_COUNT] = {
1057 [IWL_RATE_1M_INDEX] = SCAN_CONFIG_RATE_1M,
1058 [IWL_RATE_2M_INDEX] = SCAN_CONFIG_RATE_2M,
1059 [IWL_RATE_5M_INDEX] = SCAN_CONFIG_RATE_5M,
1060 [IWL_RATE_11M_INDEX] = SCAN_CONFIG_RATE_11M,
1061 [IWL_RATE_6M_INDEX] = SCAN_CONFIG_RATE_6M,
1062 [IWL_RATE_9M_INDEX] = SCAN_CONFIG_RATE_9M,
1063 [IWL_RATE_12M_INDEX] = SCAN_CONFIG_RATE_12M,
1064 [IWL_RATE_18M_INDEX] = SCAN_CONFIG_RATE_18M,
1065 [IWL_RATE_24M_INDEX] = SCAN_CONFIG_RATE_24M,
1066 [IWL_RATE_36M_INDEX] = SCAN_CONFIG_RATE_36M,
1067 [IWL_RATE_48M_INDEX] = SCAN_CONFIG_RATE_48M,
1068 [IWL_RATE_54M_INDEX] = SCAN_CONFIG_RATE_54M,
1069 };
1070
1071 return rate_to_scan_rate[rate];
1072 }
1073
iwl_mvm_scan_config_rates(struct iwl_mvm * mvm)1074 static __le32 iwl_mvm_scan_config_rates(struct iwl_mvm *mvm)
1075 {
1076 struct ieee80211_supported_band *band;
1077 unsigned int rates = 0;
1078 int i;
1079
1080 band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ];
1081 for (i = 0; i < band->n_bitrates; i++)
1082 rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value);
1083 band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ];
1084 for (i = 0; i < band->n_bitrates; i++)
1085 rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value);
1086
1087 /* Set both basic rates and supported rates */
1088 rates |= SCAN_CONFIG_SUPPORTED_RATE(rates);
1089
1090 return cpu_to_le32(rates);
1091 }
1092
iwl_mvm_fill_scan_dwell(struct iwl_mvm * mvm,struct iwl_scan_dwell * dwell)1093 static void iwl_mvm_fill_scan_dwell(struct iwl_mvm *mvm,
1094 struct iwl_scan_dwell *dwell)
1095 {
1096 dwell->active = IWL_SCAN_DWELL_ACTIVE;
1097 dwell->passive = IWL_SCAN_DWELL_PASSIVE;
1098 dwell->fragmented = IWL_SCAN_DWELL_FRAGMENTED;
1099 dwell->extended = IWL_SCAN_DWELL_EXTENDED;
1100 }
1101
iwl_mvm_fill_channels(struct iwl_mvm * mvm,u8 * channels,u32 max_channels)1102 static void iwl_mvm_fill_channels(struct iwl_mvm *mvm, u8 *channels,
1103 u32 max_channels)
1104 {
1105 struct ieee80211_supported_band *band;
1106 int i, j = 0;
1107
1108 band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ];
1109 for (i = 0; i < band->n_channels && j < max_channels; i++, j++)
1110 channels[j] = band->channels[i].hw_value;
1111 band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ];
1112 for (i = 0; i < band->n_channels && j < max_channels; i++, j++)
1113 channels[j] = band->channels[i].hw_value;
1114 }
1115
iwl_mvm_fill_scan_config_v1(struct iwl_mvm * mvm,void * config,u32 flags,u8 channel_flags,u32 max_channels)1116 static void iwl_mvm_fill_scan_config_v1(struct iwl_mvm *mvm, void *config,
1117 u32 flags, u8 channel_flags,
1118 u32 max_channels)
1119 {
1120 enum iwl_mvm_scan_type type = iwl_mvm_get_scan_type(mvm, NULL);
1121 struct iwl_scan_config_v1 *cfg = config;
1122
1123 cfg->flags = cpu_to_le32(flags);
1124 cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm));
1125 cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm));
1126 cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm);
1127 cfg->out_of_channel_time = cpu_to_le32(scan_timing[type].max_out_time);
1128 cfg->suspend_time = cpu_to_le32(scan_timing[type].suspend_time);
1129
1130 iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell);
1131
1132 memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN);
1133
1134 /* This function should not be called when using ADD_STA ver >=12 */
1135 WARN_ON_ONCE(iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP,
1136 ADD_STA, 0) >= 12);
1137
1138 cfg->bcast_sta_id = mvm->aux_sta.sta_id;
1139 cfg->channel_flags = channel_flags;
1140
1141 iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels);
1142 }
1143
iwl_mvm_fill_scan_config_v2(struct iwl_mvm * mvm,void * config,u32 flags,u8 channel_flags,u32 max_channels)1144 static void iwl_mvm_fill_scan_config_v2(struct iwl_mvm *mvm, void *config,
1145 u32 flags, u8 channel_flags,
1146 u32 max_channels)
1147 {
1148 struct iwl_scan_config_v2 *cfg = config;
1149
1150 cfg->flags = cpu_to_le32(flags);
1151 cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm));
1152 cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm));
1153 cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm);
1154
1155 if (iwl_mvm_is_cdb_supported(mvm)) {
1156 enum iwl_mvm_scan_type lb_type, hb_type;
1157
1158 lb_type = iwl_mvm_get_scan_type_band(mvm, NULL,
1159 NL80211_BAND_2GHZ);
1160 hb_type = iwl_mvm_get_scan_type_band(mvm, NULL,
1161 NL80211_BAND_5GHZ);
1162
1163 cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] =
1164 cpu_to_le32(scan_timing[lb_type].max_out_time);
1165 cfg->suspend_time[SCAN_LB_LMAC_IDX] =
1166 cpu_to_le32(scan_timing[lb_type].suspend_time);
1167
1168 cfg->out_of_channel_time[SCAN_HB_LMAC_IDX] =
1169 cpu_to_le32(scan_timing[hb_type].max_out_time);
1170 cfg->suspend_time[SCAN_HB_LMAC_IDX] =
1171 cpu_to_le32(scan_timing[hb_type].suspend_time);
1172 } else {
1173 enum iwl_mvm_scan_type type =
1174 iwl_mvm_get_scan_type(mvm, NULL);
1175
1176 cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] =
1177 cpu_to_le32(scan_timing[type].max_out_time);
1178 cfg->suspend_time[SCAN_LB_LMAC_IDX] =
1179 cpu_to_le32(scan_timing[type].suspend_time);
1180 }
1181
1182 iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell);
1183
1184 memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN);
1185
1186 /* This function should not be called when using ADD_STA ver >=12 */
1187 WARN_ON_ONCE(iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP,
1188 ADD_STA, 0) >= 12);
1189
1190 cfg->bcast_sta_id = mvm->aux_sta.sta_id;
1191 cfg->channel_flags = channel_flags;
1192
1193 iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels);
1194 }
1195
iwl_mvm_legacy_config_scan(struct iwl_mvm * mvm)1196 static int iwl_mvm_legacy_config_scan(struct iwl_mvm *mvm)
1197 {
1198 void *cfg;
1199 int ret, cmd_size;
1200 struct iwl_host_cmd cmd = {
1201 .id = iwl_cmd_id(SCAN_CFG_CMD, IWL_ALWAYS_LONG_GROUP, 0),
1202 };
1203 enum iwl_mvm_scan_type type;
1204 enum iwl_mvm_scan_type hb_type = IWL_SCAN_TYPE_NOT_SET;
1205 int num_channels =
1206 mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels +
1207 mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels;
1208 u32 flags;
1209 u8 channel_flags;
1210
1211 if (WARN_ON(num_channels > mvm->fw->ucode_capa.n_scan_channels))
1212 num_channels = mvm->fw->ucode_capa.n_scan_channels;
1213
1214 if (iwl_mvm_is_cdb_supported(mvm)) {
1215 type = iwl_mvm_get_scan_type_band(mvm, NULL,
1216 NL80211_BAND_2GHZ);
1217 hb_type = iwl_mvm_get_scan_type_band(mvm, NULL,
1218 NL80211_BAND_5GHZ);
1219 if (type == mvm->scan_type && hb_type == mvm->hb_scan_type)
1220 return 0;
1221 } else {
1222 type = iwl_mvm_get_scan_type(mvm, NULL);
1223 if (type == mvm->scan_type)
1224 return 0;
1225 }
1226
1227 if (iwl_mvm_cdb_scan_api(mvm))
1228 cmd_size = sizeof(struct iwl_scan_config_v2);
1229 else
1230 cmd_size = sizeof(struct iwl_scan_config_v1);
1231 cmd_size += mvm->fw->ucode_capa.n_scan_channels;
1232
1233 cfg = kzalloc(cmd_size, GFP_KERNEL);
1234 if (!cfg)
1235 return -ENOMEM;
1236
1237 flags = SCAN_CONFIG_FLAG_ACTIVATE |
1238 SCAN_CONFIG_FLAG_ALLOW_CHUB_REQS |
1239 SCAN_CONFIG_FLAG_SET_TX_CHAINS |
1240 SCAN_CONFIG_FLAG_SET_RX_CHAINS |
1241 SCAN_CONFIG_FLAG_SET_AUX_STA_ID |
1242 SCAN_CONFIG_FLAG_SET_ALL_TIMES |
1243 SCAN_CONFIG_FLAG_SET_LEGACY_RATES |
1244 SCAN_CONFIG_FLAG_SET_MAC_ADDR |
1245 SCAN_CONFIG_FLAG_SET_CHANNEL_FLAGS |
1246 SCAN_CONFIG_N_CHANNELS(num_channels) |
1247 (iwl_mvm_is_scan_fragmented(type) ?
1248 SCAN_CONFIG_FLAG_SET_FRAGMENTED :
1249 SCAN_CONFIG_FLAG_CLEAR_FRAGMENTED);
1250
1251 channel_flags = IWL_CHANNEL_FLAG_EBS |
1252 IWL_CHANNEL_FLAG_ACCURATE_EBS |
1253 IWL_CHANNEL_FLAG_EBS_ADD |
1254 IWL_CHANNEL_FLAG_PRE_SCAN_PASSIVE2ACTIVE;
1255
1256 /*
1257 * Check for fragmented scan on LMAC2 - high band.
1258 * LMAC1 - low band is checked above.
1259 */
1260 if (iwl_mvm_cdb_scan_api(mvm)) {
1261 if (iwl_mvm_is_cdb_supported(mvm))
1262 flags |= (iwl_mvm_is_scan_fragmented(hb_type)) ?
1263 SCAN_CONFIG_FLAG_SET_LMAC2_FRAGMENTED :
1264 SCAN_CONFIG_FLAG_CLEAR_LMAC2_FRAGMENTED;
1265 iwl_mvm_fill_scan_config_v2(mvm, cfg, flags, channel_flags,
1266 num_channels);
1267 } else {
1268 iwl_mvm_fill_scan_config_v1(mvm, cfg, flags, channel_flags,
1269 num_channels);
1270 }
1271
1272 cmd.data[0] = cfg;
1273 cmd.len[0] = cmd_size;
1274 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
1275
1276 IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n");
1277
1278 ret = iwl_mvm_send_cmd(mvm, &cmd);
1279 if (!ret) {
1280 mvm->scan_type = type;
1281 mvm->hb_scan_type = hb_type;
1282 }
1283
1284 kfree(cfg);
1285 return ret;
1286 }
1287
iwl_mvm_config_scan(struct iwl_mvm * mvm)1288 int iwl_mvm_config_scan(struct iwl_mvm *mvm)
1289 {
1290 struct iwl_scan_config cfg;
1291 struct iwl_host_cmd cmd = {
1292 .id = iwl_cmd_id(SCAN_CFG_CMD, IWL_ALWAYS_LONG_GROUP, 0),
1293 .len[0] = sizeof(cfg),
1294 .data[0] = &cfg,
1295 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1296 };
1297
1298 if (!iwl_mvm_is_reduced_config_scan_supported(mvm))
1299 return iwl_mvm_legacy_config_scan(mvm);
1300
1301 memset(&cfg, 0, sizeof(cfg));
1302
1303 if (iwl_fw_lookup_cmd_ver(mvm->fw, LONG_GROUP,
1304 ADD_STA, 0) < 12)
1305 cfg.bcast_sta_id = mvm->aux_sta.sta_id;
1306 /*
1307 * Fw doesn't use this sta anymore, pending deprecation via HOST API
1308 * change.
1309 */
1310 else
1311 cfg.bcast_sta_id = 0xff;
1312
1313 cfg.tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm));
1314 cfg.rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm));
1315
1316 IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n");
1317
1318 return iwl_mvm_send_cmd(mvm, &cmd);
1319 }
1320
iwl_mvm_scan_uid_by_status(struct iwl_mvm * mvm,int status)1321 static int iwl_mvm_scan_uid_by_status(struct iwl_mvm *mvm, int status)
1322 {
1323 int i;
1324
1325 for (i = 0; i < mvm->max_scans; i++)
1326 if (mvm->scan_uid_status[i] == status)
1327 return i;
1328
1329 return -ENOENT;
1330 }
1331
iwl_mvm_scan_umac_dwell(struct iwl_mvm * mvm,struct iwl_scan_req_umac * cmd,struct iwl_mvm_scan_params * params)1332 static void iwl_mvm_scan_umac_dwell(struct iwl_mvm *mvm,
1333 struct iwl_scan_req_umac *cmd,
1334 struct iwl_mvm_scan_params *params)
1335 {
1336 struct iwl_mvm_scan_timing_params *timing, *hb_timing;
1337 u8 active_dwell, passive_dwell;
1338
1339 timing = &scan_timing[params->type];
1340 active_dwell = IWL_SCAN_DWELL_ACTIVE;
1341 passive_dwell = IWL_SCAN_DWELL_PASSIVE;
1342
1343 if (iwl_mvm_is_adaptive_dwell_supported(mvm)) {
1344 cmd->v7.adwell_default_n_aps_social =
1345 IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL;
1346 cmd->v7.adwell_default_n_aps =
1347 IWL_SCAN_ADWELL_DEFAULT_LB_N_APS;
1348
1349 if (iwl_mvm_is_adwell_hb_ap_num_supported(mvm))
1350 cmd->v9.adwell_default_hb_n_aps =
1351 IWL_SCAN_ADWELL_DEFAULT_HB_N_APS;
1352
1353 /* if custom max budget was configured with debugfs */
1354 if (IWL_MVM_ADWELL_MAX_BUDGET)
1355 cmd->v7.adwell_max_budget =
1356 cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET);
1357 else if (params->ssids && params->ssids[0].ssid_len)
1358 cmd->v7.adwell_max_budget =
1359 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN);
1360 else
1361 cmd->v7.adwell_max_budget =
1362 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN);
1363
1364 cmd->v7.scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1365 cmd->v7.max_out_time[SCAN_LB_LMAC_IDX] =
1366 cpu_to_le32(timing->max_out_time);
1367 cmd->v7.suspend_time[SCAN_LB_LMAC_IDX] =
1368 cpu_to_le32(timing->suspend_time);
1369
1370 if (iwl_mvm_is_cdb_supported(mvm)) {
1371 hb_timing = &scan_timing[params->hb_type];
1372
1373 cmd->v7.max_out_time[SCAN_HB_LMAC_IDX] =
1374 cpu_to_le32(hb_timing->max_out_time);
1375 cmd->v7.suspend_time[SCAN_HB_LMAC_IDX] =
1376 cpu_to_le32(hb_timing->suspend_time);
1377 }
1378
1379 if (!iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) {
1380 cmd->v7.active_dwell = active_dwell;
1381 cmd->v7.passive_dwell = passive_dwell;
1382 cmd->v7.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED;
1383 } else {
1384 cmd->v8.active_dwell[SCAN_LB_LMAC_IDX] = active_dwell;
1385 cmd->v8.passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell;
1386 if (iwl_mvm_is_cdb_supported(mvm)) {
1387 cmd->v8.active_dwell[SCAN_HB_LMAC_IDX] =
1388 active_dwell;
1389 cmd->v8.passive_dwell[SCAN_HB_LMAC_IDX] =
1390 passive_dwell;
1391 }
1392 }
1393 } else {
1394 cmd->v1.extended_dwell = IWL_SCAN_DWELL_EXTENDED;
1395 cmd->v1.active_dwell = active_dwell;
1396 cmd->v1.passive_dwell = passive_dwell;
1397 cmd->v1.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED;
1398
1399 if (iwl_mvm_is_cdb_supported(mvm)) {
1400 hb_timing = &scan_timing[params->hb_type];
1401
1402 cmd->v6.max_out_time[SCAN_HB_LMAC_IDX] =
1403 cpu_to_le32(hb_timing->max_out_time);
1404 cmd->v6.suspend_time[SCAN_HB_LMAC_IDX] =
1405 cpu_to_le32(hb_timing->suspend_time);
1406 }
1407
1408 if (iwl_mvm_cdb_scan_api(mvm)) {
1409 cmd->v6.scan_priority =
1410 cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1411 cmd->v6.max_out_time[SCAN_LB_LMAC_IDX] =
1412 cpu_to_le32(timing->max_out_time);
1413 cmd->v6.suspend_time[SCAN_LB_LMAC_IDX] =
1414 cpu_to_le32(timing->suspend_time);
1415 } else {
1416 cmd->v1.scan_priority =
1417 cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1418 cmd->v1.max_out_time =
1419 cpu_to_le32(timing->max_out_time);
1420 cmd->v1.suspend_time =
1421 cpu_to_le32(timing->suspend_time);
1422 }
1423 }
1424
1425 if (iwl_mvm_is_regular_scan(params))
1426 cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1427 else
1428 cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_2);
1429 }
1430
iwl_mvm_scan_umac_ooc_priority(struct iwl_mvm_scan_params * params)1431 static u32 iwl_mvm_scan_umac_ooc_priority(struct iwl_mvm_scan_params *params)
1432 {
1433 return iwl_mvm_is_regular_scan(params) ?
1434 IWL_SCAN_PRIORITY_EXT_6 :
1435 IWL_SCAN_PRIORITY_EXT_2;
1436 }
1437
1438 static void
iwl_mvm_scan_umac_dwell_v10(struct iwl_mvm * mvm,struct iwl_scan_general_params_v10 * general_params,struct iwl_mvm_scan_params * params)1439 iwl_mvm_scan_umac_dwell_v10(struct iwl_mvm *mvm,
1440 struct iwl_scan_general_params_v10 *general_params,
1441 struct iwl_mvm_scan_params *params)
1442 {
1443 struct iwl_mvm_scan_timing_params *timing, *hb_timing;
1444 u8 active_dwell, passive_dwell;
1445
1446 timing = &scan_timing[params->type];
1447 active_dwell = IWL_SCAN_DWELL_ACTIVE;
1448 passive_dwell = IWL_SCAN_DWELL_PASSIVE;
1449
1450 general_params->adwell_default_social_chn =
1451 IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL;
1452 general_params->adwell_default_2g = IWL_SCAN_ADWELL_DEFAULT_LB_N_APS;
1453 general_params->adwell_default_5g = IWL_SCAN_ADWELL_DEFAULT_HB_N_APS;
1454
1455 /* if custom max budget was configured with debugfs */
1456 if (IWL_MVM_ADWELL_MAX_BUDGET)
1457 general_params->adwell_max_budget =
1458 cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET);
1459 else if (params->ssids && params->ssids[0].ssid_len)
1460 general_params->adwell_max_budget =
1461 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN);
1462 else
1463 general_params->adwell_max_budget =
1464 cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN);
1465
1466 general_params->scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1467 general_params->max_out_of_time[SCAN_LB_LMAC_IDX] =
1468 cpu_to_le32(timing->max_out_time);
1469 general_params->suspend_time[SCAN_LB_LMAC_IDX] =
1470 cpu_to_le32(timing->suspend_time);
1471
1472 hb_timing = &scan_timing[params->hb_type];
1473
1474 general_params->max_out_of_time[SCAN_HB_LMAC_IDX] =
1475 cpu_to_le32(hb_timing->max_out_time);
1476 general_params->suspend_time[SCAN_HB_LMAC_IDX] =
1477 cpu_to_le32(hb_timing->suspend_time);
1478
1479 general_params->active_dwell[SCAN_LB_LMAC_IDX] = active_dwell;
1480 general_params->passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell;
1481 general_params->active_dwell[SCAN_HB_LMAC_IDX] = active_dwell;
1482 general_params->passive_dwell[SCAN_HB_LMAC_IDX] = passive_dwell;
1483 }
1484
1485 struct iwl_mvm_scan_channel_segment {
1486 u8 start_idx;
1487 u8 end_idx;
1488 u8 first_channel_id;
1489 u8 last_channel_id;
1490 u8 channel_spacing_shift;
1491 u8 band;
1492 };
1493
1494 static const struct iwl_mvm_scan_channel_segment scan_channel_segments[] = {
1495 {
1496 .start_idx = 0,
1497 .end_idx = 13,
1498 .first_channel_id = 1,
1499 .last_channel_id = 14,
1500 .channel_spacing_shift = 0,
1501 .band = PHY_BAND_24
1502 },
1503 {
1504 .start_idx = 14,
1505 .end_idx = 41,
1506 .first_channel_id = 36,
1507 .last_channel_id = 144,
1508 .channel_spacing_shift = 2,
1509 .band = PHY_BAND_5
1510 },
1511 {
1512 .start_idx = 42,
1513 .end_idx = 50,
1514 .first_channel_id = 149,
1515 .last_channel_id = 181,
1516 .channel_spacing_shift = 2,
1517 .band = PHY_BAND_5
1518 },
1519 };
1520
iwl_mvm_scan_ch_and_band_to_idx(u8 channel_id,u8 band)1521 static int iwl_mvm_scan_ch_and_band_to_idx(u8 channel_id, u8 band)
1522 {
1523 int i, index;
1524
1525 if (!channel_id)
1526 return -EINVAL;
1527
1528 for (i = 0; i < ARRAY_SIZE(scan_channel_segments); i++) {
1529 const struct iwl_mvm_scan_channel_segment *ch_segment =
1530 &scan_channel_segments[i];
1531 u32 ch_offset;
1532
1533 if (ch_segment->band != band ||
1534 ch_segment->first_channel_id > channel_id ||
1535 ch_segment->last_channel_id < channel_id)
1536 continue;
1537
1538 ch_offset = (channel_id - ch_segment->first_channel_id) >>
1539 ch_segment->channel_spacing_shift;
1540
1541 index = scan_channel_segments[i].start_idx + ch_offset;
1542 if (index < IWL_SCAN_NUM_CHANNELS)
1543 return index;
1544
1545 break;
1546 }
1547
1548 return -EINVAL;
1549 }
1550
1551 static const u8 p2p_go_friendly_chs[] = {
1552 36, 40, 44, 48, 149, 153, 157, 161, 165,
1553 };
1554
1555 static const u8 social_chs[] = {
1556 1, 6, 11
1557 };
1558
iwl_mvm_scan_ch_add_n_aps_override(enum nl80211_iftype vif_type,u8 ch_id,u8 band,u8 * ch_bitmap,size_t bitmap_n_entries)1559 static void iwl_mvm_scan_ch_add_n_aps_override(enum nl80211_iftype vif_type,
1560 u8 ch_id, u8 band, u8 *ch_bitmap,
1561 size_t bitmap_n_entries)
1562 {
1563 int i;
1564
1565 if (vif_type != NL80211_IFTYPE_P2P_DEVICE)
1566 return;
1567
1568 for (i = 0; i < ARRAY_SIZE(p2p_go_friendly_chs); i++) {
1569 if (p2p_go_friendly_chs[i] == ch_id) {
1570 int ch_idx, bitmap_idx;
1571
1572 ch_idx = iwl_mvm_scan_ch_and_band_to_idx(ch_id, band);
1573 if (ch_idx < 0)
1574 return;
1575
1576 bitmap_idx = ch_idx / 8;
1577 if (bitmap_idx >= bitmap_n_entries)
1578 return;
1579
1580 ch_idx = ch_idx % 8;
1581 ch_bitmap[bitmap_idx] |= BIT(ch_idx);
1582
1583 return;
1584 }
1585 }
1586 }
1587
iwl_mvm_scan_ch_n_aps_flag(enum nl80211_iftype vif_type,u8 ch_id)1588 static u32 iwl_mvm_scan_ch_n_aps_flag(enum nl80211_iftype vif_type, u8 ch_id)
1589 {
1590 int i;
1591 u32 flags = 0;
1592
1593 if (vif_type != NL80211_IFTYPE_P2P_DEVICE)
1594 goto out;
1595
1596 for (i = 0; i < ARRAY_SIZE(p2p_go_friendly_chs); i++) {
1597 if (p2p_go_friendly_chs[i] == ch_id) {
1598 flags |= IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY_BIT;
1599 break;
1600 }
1601 }
1602
1603 if (flags)
1604 goto out;
1605
1606 for (i = 0; i < ARRAY_SIZE(social_chs); i++) {
1607 if (social_chs[i] == ch_id) {
1608 flags |= IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS_BIT;
1609 break;
1610 }
1611 }
1612
1613 out:
1614 return flags;
1615 }
1616
1617 static void
iwl_mvm_umac_scan_cfg_channels(struct iwl_mvm * mvm,struct ieee80211_channel ** channels,int n_channels,u32 flags,struct iwl_scan_channel_cfg_umac * channel_cfg)1618 iwl_mvm_umac_scan_cfg_channels(struct iwl_mvm *mvm,
1619 struct ieee80211_channel **channels,
1620 int n_channels, u32 flags,
1621 struct iwl_scan_channel_cfg_umac *channel_cfg)
1622 {
1623 int i;
1624
1625 for (i = 0; i < n_channels; i++) {
1626 channel_cfg[i].flags = cpu_to_le32(flags);
1627 channel_cfg[i].v1.channel_num = channels[i]->hw_value;
1628 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) {
1629 enum nl80211_band band = channels[i]->band;
1630
1631 channel_cfg[i].v2.band =
1632 iwl_mvm_phy_band_from_nl80211(band);
1633 channel_cfg[i].v2.iter_count = 1;
1634 channel_cfg[i].v2.iter_interval = 0;
1635 } else {
1636 channel_cfg[i].v1.iter_count = 1;
1637 channel_cfg[i].v1.iter_interval = 0;
1638 }
1639 }
1640 }
1641
1642 static void
iwl_mvm_umac_scan_cfg_channels_v4(struct iwl_mvm * mvm,struct ieee80211_channel ** channels,struct iwl_scan_channel_params_v4 * cp,int n_channels,u32 flags,enum nl80211_iftype vif_type)1643 iwl_mvm_umac_scan_cfg_channels_v4(struct iwl_mvm *mvm,
1644 struct ieee80211_channel **channels,
1645 struct iwl_scan_channel_params_v4 *cp,
1646 int n_channels, u32 flags,
1647 enum nl80211_iftype vif_type)
1648 {
1649 u8 *bitmap = cp->adwell_ch_override_bitmap;
1650 size_t bitmap_n_entries = ARRAY_SIZE(cp->adwell_ch_override_bitmap);
1651 int i;
1652
1653 for (i = 0; i < n_channels; i++) {
1654 enum nl80211_band band = channels[i]->band;
1655 struct iwl_scan_channel_cfg_umac *cfg =
1656 &cp->channel_config[i];
1657
1658 cfg->flags = cpu_to_le32(flags);
1659 cfg->v2.channel_num = channels[i]->hw_value;
1660 cfg->v2.band = iwl_mvm_phy_band_from_nl80211(band);
1661 cfg->v2.iter_count = 1;
1662 cfg->v2.iter_interval = 0;
1663
1664 iwl_mvm_scan_ch_add_n_aps_override(vif_type,
1665 cfg->v2.channel_num,
1666 cfg->v2.band, bitmap,
1667 bitmap_n_entries);
1668 }
1669 }
1670
1671 static void
iwl_mvm_umac_scan_cfg_channels_v6(struct iwl_mvm * mvm,struct ieee80211_channel ** channels,struct iwl_scan_channel_params_v6 * cp,int n_channels,u32 flags,enum nl80211_iftype vif_type)1672 iwl_mvm_umac_scan_cfg_channels_v6(struct iwl_mvm *mvm,
1673 struct ieee80211_channel **channels,
1674 struct iwl_scan_channel_params_v6 *cp,
1675 int n_channels, u32 flags,
1676 enum nl80211_iftype vif_type)
1677 {
1678 int i;
1679
1680 for (i = 0; i < n_channels; i++) {
1681 enum nl80211_band band = channels[i]->band;
1682 struct iwl_scan_channel_cfg_umac *cfg = &cp->channel_config[i];
1683 u32 n_aps_flag =
1684 iwl_mvm_scan_ch_n_aps_flag(vif_type,
1685 cfg->v2.channel_num);
1686
1687 cfg->flags = cpu_to_le32(flags | n_aps_flag);
1688 cfg->v2.channel_num = channels[i]->hw_value;
1689 cfg->v2.band = iwl_mvm_phy_band_from_nl80211(band);
1690 cfg->v2.iter_count = 1;
1691 cfg->v2.iter_interval = 0;
1692 }
1693 }
1694
iwl_mvm_scan_umac_chan_flags_v2(struct iwl_mvm * mvm,struct iwl_mvm_scan_params * params,struct ieee80211_vif * vif)1695 static u8 iwl_mvm_scan_umac_chan_flags_v2(struct iwl_mvm *mvm,
1696 struct iwl_mvm_scan_params *params,
1697 struct ieee80211_vif *vif)
1698 {
1699 u8 flags = 0;
1700
1701 flags |= IWL_SCAN_CHANNEL_FLAG_ENABLE_CHAN_ORDER;
1702
1703 if (iwl_mvm_scan_use_ebs(mvm, vif))
1704 flags |= IWL_SCAN_CHANNEL_FLAG_EBS |
1705 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
1706 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD;
1707
1708 /* set fragmented ebs for fragmented scan on HB channels */
1709 if (iwl_mvm_is_scan_fragmented(params->hb_type))
1710 flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG;
1711
1712 return flags;
1713 }
1714
iwl_mvm_scan_umac_flags_v2(struct iwl_mvm * mvm,struct iwl_mvm_scan_params * params,struct ieee80211_vif * vif,int type)1715 static u16 iwl_mvm_scan_umac_flags_v2(struct iwl_mvm *mvm,
1716 struct iwl_mvm_scan_params *params,
1717 struct ieee80211_vif *vif,
1718 int type)
1719 {
1720 u16 flags = 0;
1721
1722 if (params->n_ssids == 0)
1723 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FORCE_PASSIVE;
1724
1725 if (iwl_mvm_is_scan_fragmented(params->type))
1726 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1;
1727
1728 if (iwl_mvm_is_scan_fragmented(params->hb_type))
1729 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC2;
1730
1731 if (params->pass_all)
1732 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PASS_ALL;
1733 else
1734 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_MATCH;
1735
1736 if (!iwl_mvm_is_regular_scan(params))
1737 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PERIODIC;
1738
1739 if (params->iter_notif ||
1740 mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED)
1741 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_NTFY_ITER_COMPLETE;
1742
1743 if (IWL_MVM_ADWELL_ENABLE)
1744 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_ADAPTIVE_DWELL;
1745
1746 if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT)
1747 flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PREEMPTIVE;
1748
1749 return flags;
1750 }
1751
iwl_mvm_scan_umac_flags(struct iwl_mvm * mvm,struct iwl_mvm_scan_params * params,struct ieee80211_vif * vif)1752 static u16 iwl_mvm_scan_umac_flags(struct iwl_mvm *mvm,
1753 struct iwl_mvm_scan_params *params,
1754 struct ieee80211_vif *vif)
1755 {
1756 u16 flags = 0;
1757
1758 if (params->n_ssids == 0)
1759 flags = IWL_UMAC_SCAN_GEN_FLAGS_PASSIVE;
1760
1761 if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0)
1762 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PRE_CONNECT;
1763
1764 if (iwl_mvm_is_scan_fragmented(params->type))
1765 flags |= IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED;
1766
1767 if (iwl_mvm_is_cdb_supported(mvm) &&
1768 iwl_mvm_is_scan_fragmented(params->hb_type))
1769 flags |= IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED;
1770
1771 if (iwl_mvm_rrm_scan_needed(mvm) &&
1772 fw_has_capa(&mvm->fw->ucode_capa,
1773 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
1774 flags |= IWL_UMAC_SCAN_GEN_FLAGS_RRM_ENABLED;
1775
1776 if (params->pass_all)
1777 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PASS_ALL;
1778 else
1779 flags |= IWL_UMAC_SCAN_GEN_FLAGS_MATCH;
1780
1781 if (!iwl_mvm_is_regular_scan(params))
1782 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PERIODIC;
1783
1784 if (params->iter_notif)
1785 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE;
1786
1787 #ifdef CONFIG_IWLWIFI_DEBUGFS
1788 if (mvm->scan_iter_notif_enabled)
1789 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE;
1790 #endif
1791
1792 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED)
1793 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE;
1794
1795 if (iwl_mvm_is_adaptive_dwell_supported(mvm) && IWL_MVM_ADWELL_ENABLE)
1796 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ADAPTIVE_DWELL;
1797
1798 /*
1799 * Extended dwell is relevant only for low band to start with, as it is
1800 * being used for social channles only (1, 6, 11), so we can check
1801 * only scan type on low band also for CDB.
1802 */
1803 if (iwl_mvm_is_regular_scan(params) &&
1804 vif->type != NL80211_IFTYPE_P2P_DEVICE &&
1805 !iwl_mvm_is_scan_fragmented(params->type) &&
1806 !iwl_mvm_is_adaptive_dwell_supported(mvm) &&
1807 !iwl_mvm_is_oce_supported(mvm))
1808 flags |= IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL;
1809
1810 if (iwl_mvm_is_oce_supported(mvm)) {
1811 if ((params->flags &
1812 NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE))
1813 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_HIGH_TX_RATE;
1814 /* Since IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL and
1815 * NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION shares
1816 * the same bit, we need to make sure that we use this bit here
1817 * only when IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL cannot be
1818 * used. */
1819 if ((params->flags &
1820 NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) &&
1821 !WARN_ON_ONCE(!iwl_mvm_is_adaptive_dwell_supported(mvm)))
1822 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_DEFER_SUPP;
1823 if ((params->flags & NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME))
1824 flags |= IWL_UMAC_SCAN_GEN_FLAGS_MAX_CHNL_TIME;
1825 }
1826
1827 return flags;
1828 }
1829
1830 static int
iwl_mvm_fill_scan_sched_params(struct iwl_mvm_scan_params * params,struct iwl_scan_umac_schedule * schedule,__le16 * delay)1831 iwl_mvm_fill_scan_sched_params(struct iwl_mvm_scan_params *params,
1832 struct iwl_scan_umac_schedule *schedule,
1833 __le16 *delay)
1834 {
1835 int i;
1836 if (WARN_ON(!params->n_scan_plans ||
1837 params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS))
1838 return -EINVAL;
1839
1840 for (i = 0; i < params->n_scan_plans; i++) {
1841 struct cfg80211_sched_scan_plan *scan_plan =
1842 ¶ms->scan_plans[i];
1843
1844 schedule[i].iter_count = scan_plan->iterations;
1845 schedule[i].interval =
1846 cpu_to_le16(scan_plan->interval);
1847 }
1848
1849 /*
1850 * If the number of iterations of the last scan plan is set to
1851 * zero, it should run infinitely. However, this is not always the case.
1852 * For example, when regular scan is requested the driver sets one scan
1853 * plan with one iteration.
1854 */
1855 if (!schedule[params->n_scan_plans - 1].iter_count)
1856 schedule[params->n_scan_plans - 1].iter_count = 0xff;
1857
1858 *delay = cpu_to_le16(params->delay);
1859
1860 return 0;
1861 }
1862
iwl_mvm_scan_umac(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_mvm_scan_params * params,int type,int uid)1863 static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1864 struct iwl_mvm_scan_params *params,
1865 int type, int uid)
1866 {
1867 struct iwl_scan_req_umac *cmd = mvm->scan_cmd;
1868 struct iwl_scan_umac_chan_param *chan_param;
1869 void *cmd_data = iwl_mvm_get_scan_req_umac_data(mvm);
1870 void *sec_part = cmd_data + sizeof(struct iwl_scan_channel_cfg_umac) *
1871 mvm->fw->ucode_capa.n_scan_channels;
1872 struct iwl_scan_req_umac_tail_v2 *tail_v2 =
1873 (struct iwl_scan_req_umac_tail_v2 *)sec_part;
1874 struct iwl_scan_req_umac_tail_v1 *tail_v1;
1875 struct iwl_ssid_ie *direct_scan;
1876 int ret = 0;
1877 u32 ssid_bitmap = 0;
1878 u8 channel_flags = 0;
1879 u16 gen_flags;
1880 struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif);
1881
1882 chan_param = iwl_mvm_get_scan_req_umac_channel(mvm);
1883
1884 iwl_mvm_scan_umac_dwell(mvm, cmd, params);
1885
1886 mvm->scan_uid_status[uid] = type;
1887
1888 cmd->uid = cpu_to_le32(uid);
1889 gen_flags = iwl_mvm_scan_umac_flags(mvm, params, vif);
1890 cmd->general_flags = cpu_to_le16(gen_flags);
1891 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) {
1892 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED)
1893 cmd->v8.num_of_fragments[SCAN_LB_LMAC_IDX] =
1894 IWL_SCAN_NUM_OF_FRAGS;
1895 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED)
1896 cmd->v8.num_of_fragments[SCAN_HB_LMAC_IDX] =
1897 IWL_SCAN_NUM_OF_FRAGS;
1898
1899 cmd->v8.general_flags2 =
1900 IWL_UMAC_SCAN_GEN_FLAGS2_ALLOW_CHNL_REORDER;
1901 }
1902
1903 cmd->scan_start_mac_id = scan_vif->id;
1904
1905 if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT)
1906 cmd->flags = cpu_to_le32(IWL_UMAC_SCAN_FLAG_PREEMPTIVE);
1907
1908 if (iwl_mvm_scan_use_ebs(mvm, vif)) {
1909 channel_flags = IWL_SCAN_CHANNEL_FLAG_EBS |
1910 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
1911 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD;
1912
1913 /* set fragmented ebs for fragmented scan on HB channels */
1914 if (iwl_mvm_is_frag_ebs_supported(mvm)) {
1915 if (gen_flags &
1916 IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED ||
1917 (!iwl_mvm_is_cdb_supported(mvm) &&
1918 gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED))
1919 channel_flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG;
1920 }
1921 }
1922
1923 chan_param->flags = channel_flags;
1924 chan_param->count = params->n_channels;
1925
1926 ret = iwl_mvm_fill_scan_sched_params(params, tail_v2->schedule,
1927 &tail_v2->delay);
1928 if (ret)
1929 return ret;
1930
1931 if (iwl_mvm_is_scan_ext_chan_supported(mvm)) {
1932 tail_v2->preq = params->preq;
1933 direct_scan = tail_v2->direct_scan;
1934 } else {
1935 tail_v1 = (struct iwl_scan_req_umac_tail_v1 *)sec_part;
1936 iwl_mvm_scan_set_legacy_probe_req(&tail_v1->preq,
1937 ¶ms->preq);
1938 direct_scan = tail_v1->direct_scan;
1939 }
1940 iwl_scan_build_ssids(params, direct_scan, &ssid_bitmap);
1941 iwl_mvm_umac_scan_cfg_channels(mvm, params->channels,
1942 params->n_channels, ssid_bitmap,
1943 cmd_data);
1944 return 0;
1945 }
1946
1947 static void
iwl_mvm_scan_umac_fill_general_p_v10(struct iwl_mvm * mvm,struct iwl_mvm_scan_params * params,struct ieee80211_vif * vif,struct iwl_scan_general_params_v10 * gp,u16 gen_flags)1948 iwl_mvm_scan_umac_fill_general_p_v10(struct iwl_mvm *mvm,
1949 struct iwl_mvm_scan_params *params,
1950 struct ieee80211_vif *vif,
1951 struct iwl_scan_general_params_v10 *gp,
1952 u16 gen_flags)
1953 {
1954 struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif);
1955
1956 iwl_mvm_scan_umac_dwell_v10(mvm, gp, params);
1957
1958 gp->flags = cpu_to_le16(gen_flags);
1959
1960 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1)
1961 gp->num_of_fragments[SCAN_LB_LMAC_IDX] = IWL_SCAN_NUM_OF_FRAGS;
1962 if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC2)
1963 gp->num_of_fragments[SCAN_HB_LMAC_IDX] = IWL_SCAN_NUM_OF_FRAGS;
1964
1965 gp->scan_start_mac_id = scan_vif->id;
1966 }
1967
1968 static void
iwl_mvm_scan_umac_fill_probe_p_v3(struct iwl_mvm_scan_params * params,struct iwl_scan_probe_params_v3 * pp)1969 iwl_mvm_scan_umac_fill_probe_p_v3(struct iwl_mvm_scan_params *params,
1970 struct iwl_scan_probe_params_v3 *pp)
1971 {
1972 pp->preq = params->preq;
1973 pp->ssid_num = params->n_ssids;
1974 iwl_scan_build_ssids(params, pp->direct_scan, NULL);
1975 }
1976
1977 static void
iwl_mvm_scan_umac_fill_probe_p_v4(struct iwl_mvm_scan_params * params,struct iwl_scan_probe_params_v4 * pp,u32 * bitmap_ssid)1978 iwl_mvm_scan_umac_fill_probe_p_v4(struct iwl_mvm_scan_params *params,
1979 struct iwl_scan_probe_params_v4 *pp,
1980 u32 *bitmap_ssid)
1981 {
1982 pp->preq = params->preq;
1983 iwl_scan_build_ssids(params, pp->direct_scan, bitmap_ssid);
1984 }
1985
1986 static void
iwl_mvm_scan_umac_fill_ch_p_v4(struct iwl_mvm * mvm,struct iwl_mvm_scan_params * params,struct ieee80211_vif * vif,struct iwl_scan_channel_params_v4 * cp,u32 channel_cfg_flags)1987 iwl_mvm_scan_umac_fill_ch_p_v4(struct iwl_mvm *mvm,
1988 struct iwl_mvm_scan_params *params,
1989 struct ieee80211_vif *vif,
1990 struct iwl_scan_channel_params_v4 *cp,
1991 u32 channel_cfg_flags)
1992 {
1993 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif);
1994 cp->count = params->n_channels;
1995 cp->num_of_aps_override = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY;
1996
1997 iwl_mvm_umac_scan_cfg_channels_v4(mvm, params->channels, cp,
1998 params->n_channels,
1999 channel_cfg_flags,
2000 vif->type);
2001 }
2002
2003 static void
iwl_mvm_scan_umac_fill_ch_p_v6(struct iwl_mvm * mvm,struct iwl_mvm_scan_params * params,struct ieee80211_vif * vif,struct iwl_scan_channel_params_v6 * cp,u32 channel_cfg_flags)2004 iwl_mvm_scan_umac_fill_ch_p_v6(struct iwl_mvm *mvm,
2005 struct iwl_mvm_scan_params *params,
2006 struct ieee80211_vif *vif,
2007 struct iwl_scan_channel_params_v6 *cp,
2008 u32 channel_cfg_flags)
2009 {
2010 cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif);
2011 cp->count = params->n_channels;
2012 cp->n_aps_override[0] = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY;
2013 cp->n_aps_override[1] = IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS;
2014
2015 iwl_mvm_umac_scan_cfg_channels_v6(mvm, params->channels, cp,
2016 params->n_channels,
2017 channel_cfg_flags,
2018 vif->type);
2019 }
2020
iwl_mvm_scan_umac_v12(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_mvm_scan_params * params,int type,int uid)2021 static int iwl_mvm_scan_umac_v12(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2022 struct iwl_mvm_scan_params *params, int type,
2023 int uid)
2024 {
2025 struct iwl_scan_req_umac_v12 *cmd = mvm->scan_cmd;
2026 struct iwl_scan_req_params_v12 *scan_p = &cmd->scan_params;
2027 int ret;
2028 u16 gen_flags;
2029
2030 mvm->scan_uid_status[uid] = type;
2031
2032 cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(params));
2033 cmd->uid = cpu_to_le32(uid);
2034
2035 gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type);
2036 iwl_mvm_scan_umac_fill_general_p_v10(mvm, params, vif,
2037 &scan_p->general_params,
2038 gen_flags);
2039
2040 ret = iwl_mvm_fill_scan_sched_params(params,
2041 scan_p->periodic_params.schedule,
2042 &scan_p->periodic_params.delay);
2043 if (ret)
2044 return ret;
2045
2046 iwl_mvm_scan_umac_fill_probe_p_v3(params, &scan_p->probe_params);
2047 iwl_mvm_scan_umac_fill_ch_p_v4(mvm, params, vif,
2048 &scan_p->channel_params, 0);
2049
2050 return 0;
2051 }
2052
iwl_mvm_scan_umac_v14(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_mvm_scan_params * params,int type,int uid)2053 static int iwl_mvm_scan_umac_v14(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2054 struct iwl_mvm_scan_params *params, int type,
2055 int uid)
2056 {
2057 struct iwl_scan_req_umac_v14 *cmd = mvm->scan_cmd;
2058 struct iwl_scan_req_params_v14 *scan_p = &cmd->scan_params;
2059 int ret;
2060 u16 gen_flags;
2061 u32 bitmap_ssid = 0;
2062
2063 mvm->scan_uid_status[uid] = type;
2064
2065 cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(params));
2066 cmd->uid = cpu_to_le32(uid);
2067
2068 gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type);
2069 iwl_mvm_scan_umac_fill_general_p_v10(mvm, params, vif,
2070 &scan_p->general_params,
2071 gen_flags);
2072
2073 ret = iwl_mvm_fill_scan_sched_params(params,
2074 scan_p->periodic_params.schedule,
2075 &scan_p->periodic_params.delay);
2076 if (ret)
2077 return ret;
2078
2079 iwl_mvm_scan_umac_fill_probe_p_v4(params, &scan_p->probe_params,
2080 &bitmap_ssid);
2081 iwl_mvm_scan_umac_fill_ch_p_v6(mvm, params, vif,
2082 &scan_p->channel_params, bitmap_ssid);
2083
2084 return 0;
2085 }
2086
iwl_mvm_num_scans(struct iwl_mvm * mvm)2087 static int iwl_mvm_num_scans(struct iwl_mvm *mvm)
2088 {
2089 return hweight32(mvm->scan_status & IWL_MVM_SCAN_MASK);
2090 }
2091
iwl_mvm_check_running_scans(struct iwl_mvm * mvm,int type)2092 static int iwl_mvm_check_running_scans(struct iwl_mvm *mvm, int type)
2093 {
2094 bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
2095 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
2096
2097 /* This looks a bit arbitrary, but the idea is that if we run
2098 * out of possible simultaneous scans and the userspace is
2099 * trying to run a scan type that is already running, we
2100 * return -EBUSY. But if the userspace wants to start a
2101 * different type of scan, we stop the opposite type to make
2102 * space for the new request. The reason is backwards
2103 * compatibility with old wpa_supplicant that wouldn't stop a
2104 * scheduled scan before starting a normal scan.
2105 */
2106
2107 /* FW supports only a single periodic scan */
2108 if ((type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) &&
2109 mvm->scan_status & (IWL_MVM_SCAN_SCHED | IWL_MVM_SCAN_NETDETECT))
2110 return -EBUSY;
2111
2112 if (iwl_mvm_num_scans(mvm) < mvm->max_scans)
2113 return 0;
2114
2115 /* Use a switch, even though this is a bitmask, so that more
2116 * than one bits set will fall in default and we will warn.
2117 */
2118 switch (type) {
2119 case IWL_MVM_SCAN_REGULAR:
2120 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK)
2121 return -EBUSY;
2122 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2123 case IWL_MVM_SCAN_SCHED:
2124 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK)
2125 return -EBUSY;
2126 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2127 case IWL_MVM_SCAN_NETDETECT:
2128 /* For non-unified images, there's no need to stop
2129 * anything for net-detect since the firmware is
2130 * restarted anyway. This way, any sched scans that
2131 * were running will be restarted when we resume.
2132 */
2133 if (!unified_image)
2134 return 0;
2135
2136 /* If this is a unified image and we ran out of scans,
2137 * we need to stop something. Prefer stopping regular
2138 * scans, because the results are useless at this
2139 * point, and we should be able to keep running
2140 * another scheduled scan while suspended.
2141 */
2142 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK)
2143 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR,
2144 true);
2145 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK)
2146 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED,
2147 true);
2148 /* Something is wrong if no scan was running but we
2149 * ran out of scans.
2150 */
2151 /* fall through */
2152 default:
2153 WARN_ON(1);
2154 break;
2155 }
2156
2157 return -EIO;
2158 }
2159
2160 #define SCAN_TIMEOUT 20000
2161
iwl_mvm_scan_timeout_wk(struct work_struct * work)2162 void iwl_mvm_scan_timeout_wk(struct work_struct *work)
2163 {
2164 struct delayed_work *delayed_work = to_delayed_work(work);
2165 struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm,
2166 scan_timeout_dwork);
2167
2168 IWL_ERR(mvm, "regular scan timed out\n");
2169
2170 iwl_force_nmi(mvm->trans);
2171 }
2172
iwl_mvm_fill_scan_type(struct iwl_mvm * mvm,struct iwl_mvm_scan_params * params,struct ieee80211_vif * vif)2173 static void iwl_mvm_fill_scan_type(struct iwl_mvm *mvm,
2174 struct iwl_mvm_scan_params *params,
2175 struct ieee80211_vif *vif)
2176 {
2177 if (iwl_mvm_is_cdb_supported(mvm)) {
2178 params->type =
2179 iwl_mvm_get_scan_type_band(mvm, vif,
2180 NL80211_BAND_2GHZ);
2181 params->hb_type =
2182 iwl_mvm_get_scan_type_band(mvm, vif,
2183 NL80211_BAND_5GHZ);
2184 } else {
2185 params->type = iwl_mvm_get_scan_type(mvm, vif);
2186 }
2187 }
2188
2189 struct iwl_scan_umac_handler {
2190 u8 version;
2191 int (*handler)(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2192 struct iwl_mvm_scan_params *params, int type, int uid);
2193 };
2194
2195 #define IWL_SCAN_UMAC_HANDLER(_ver) { \
2196 .version = _ver, \
2197 .handler = iwl_mvm_scan_umac_v##_ver, \
2198 }
2199
2200 static const struct iwl_scan_umac_handler iwl_scan_umac_handlers[] = {
2201 /* set the newest version first to shorten the list traverse time */
2202 IWL_SCAN_UMAC_HANDLER(14),
2203 IWL_SCAN_UMAC_HANDLER(12),
2204 };
2205
iwl_mvm_build_scan_cmd(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct iwl_host_cmd * hcmd,struct iwl_mvm_scan_params * params,int type)2206 static int iwl_mvm_build_scan_cmd(struct iwl_mvm *mvm,
2207 struct ieee80211_vif *vif,
2208 struct iwl_host_cmd *hcmd,
2209 struct iwl_mvm_scan_params *params,
2210 int type)
2211 {
2212 int uid, i;
2213 u8 scan_ver;
2214
2215 lockdep_assert_held(&mvm->mutex);
2216 memset(mvm->scan_cmd, 0, ksize(mvm->scan_cmd));
2217
2218 if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2219 hcmd->id = SCAN_OFFLOAD_REQUEST_CMD;
2220
2221 return iwl_mvm_scan_lmac(mvm, vif, params);
2222 }
2223
2224 uid = iwl_mvm_scan_uid_by_status(mvm, 0);
2225 if (uid < 0)
2226 return uid;
2227
2228 hcmd->id = iwl_cmd_id(SCAN_REQ_UMAC, IWL_ALWAYS_LONG_GROUP, 0);
2229
2230 scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, IWL_ALWAYS_LONG_GROUP,
2231 SCAN_REQ_UMAC,
2232 IWL_FW_CMD_VER_UNKNOWN);
2233
2234 for (i = 0; i < ARRAY_SIZE(iwl_scan_umac_handlers); i++) {
2235 const struct iwl_scan_umac_handler *ver_handler =
2236 &iwl_scan_umac_handlers[i];
2237
2238 if (ver_handler->version != scan_ver)
2239 continue;
2240
2241 return ver_handler->handler(mvm, vif, params, type, uid);
2242 }
2243
2244 return iwl_mvm_scan_umac(mvm, vif, params, type, uid);
2245 }
2246
iwl_mvm_reg_scan_start(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct cfg80211_scan_request * req,struct ieee80211_scan_ies * ies)2247 int iwl_mvm_reg_scan_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2248 struct cfg80211_scan_request *req,
2249 struct ieee80211_scan_ies *ies)
2250 {
2251 struct iwl_host_cmd hcmd = {
2252 .len = { iwl_mvm_scan_size(mvm), },
2253 .data = { mvm->scan_cmd, },
2254 .dataflags = { IWL_HCMD_DFL_NOCOPY, },
2255 };
2256 struct iwl_mvm_scan_params params = {};
2257 int ret;
2258 struct cfg80211_sched_scan_plan scan_plan = { .iterations = 1 };
2259
2260 lockdep_assert_held(&mvm->mutex);
2261
2262 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) {
2263 IWL_ERR(mvm, "scan while LAR regdomain is not set\n");
2264 return -EBUSY;
2265 }
2266
2267 ret = iwl_mvm_check_running_scans(mvm, IWL_MVM_SCAN_REGULAR);
2268 if (ret)
2269 return ret;
2270
2271 /* we should have failed registration if scan_cmd was NULL */
2272 if (WARN_ON(!mvm->scan_cmd))
2273 return -ENOMEM;
2274
2275 if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels))
2276 return -ENOBUFS;
2277
2278 params.n_ssids = req->n_ssids;
2279 params.flags = req->flags;
2280 params.n_channels = req->n_channels;
2281 params.delay = 0;
2282 params.ssids = req->ssids;
2283 params.channels = req->channels;
2284 params.mac_addr = req->mac_addr;
2285 params.mac_addr_mask = req->mac_addr_mask;
2286 params.no_cck = req->no_cck;
2287 params.pass_all = true;
2288 params.n_match_sets = 0;
2289 params.match_sets = NULL;
2290
2291 params.scan_plans = &scan_plan;
2292 params.n_scan_plans = 1;
2293
2294 iwl_mvm_fill_scan_type(mvm, ¶ms, vif);
2295
2296 if (req->duration)
2297 params.iter_notif = true;
2298
2299 iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms);
2300
2301 ret = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, ¶ms,
2302 IWL_MVM_SCAN_REGULAR);
2303
2304 if (ret)
2305 return ret;
2306
2307 iwl_mvm_pause_tcm(mvm, false);
2308
2309 ret = iwl_mvm_send_cmd(mvm, &hcmd);
2310 if (ret) {
2311 /* If the scan failed, it usually means that the FW was unable
2312 * to allocate the time events. Warn on it, but maybe we
2313 * should try to send the command again with different params.
2314 */
2315 IWL_ERR(mvm, "Scan failed! ret %d\n", ret);
2316 iwl_mvm_resume_tcm(mvm);
2317 return ret;
2318 }
2319
2320 IWL_DEBUG_SCAN(mvm, "Scan request was sent successfully\n");
2321 mvm->scan_status |= IWL_MVM_SCAN_REGULAR;
2322 mvm->scan_vif = iwl_mvm_vif_from_mac80211(vif);
2323
2324 schedule_delayed_work(&mvm->scan_timeout_dwork,
2325 msecs_to_jiffies(SCAN_TIMEOUT));
2326
2327 return 0;
2328 }
2329
iwl_mvm_sched_scan_start(struct iwl_mvm * mvm,struct ieee80211_vif * vif,struct cfg80211_sched_scan_request * req,struct ieee80211_scan_ies * ies,int type)2330 int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm,
2331 struct ieee80211_vif *vif,
2332 struct cfg80211_sched_scan_request *req,
2333 struct ieee80211_scan_ies *ies,
2334 int type)
2335 {
2336 struct iwl_host_cmd hcmd = {
2337 .len = { iwl_mvm_scan_size(mvm), },
2338 .data = { mvm->scan_cmd, },
2339 .dataflags = { IWL_HCMD_DFL_NOCOPY, },
2340 };
2341 struct iwl_mvm_scan_params params = {};
2342 int ret;
2343
2344 lockdep_assert_held(&mvm->mutex);
2345
2346 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) {
2347 IWL_ERR(mvm, "sched-scan while LAR regdomain is not set\n");
2348 return -EBUSY;
2349 }
2350
2351 ret = iwl_mvm_check_running_scans(mvm, type);
2352 if (ret)
2353 return ret;
2354
2355 /* we should have failed registration if scan_cmd was NULL */
2356 if (WARN_ON(!mvm->scan_cmd))
2357 return -ENOMEM;
2358
2359 if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels))
2360 return -ENOBUFS;
2361
2362 params.n_ssids = req->n_ssids;
2363 params.flags = req->flags;
2364 params.n_channels = req->n_channels;
2365 params.ssids = req->ssids;
2366 params.channels = req->channels;
2367 params.mac_addr = req->mac_addr;
2368 params.mac_addr_mask = req->mac_addr_mask;
2369 params.no_cck = false;
2370 params.pass_all = iwl_mvm_scan_pass_all(mvm, req);
2371 params.n_match_sets = req->n_match_sets;
2372 params.match_sets = req->match_sets;
2373 if (!req->n_scan_plans)
2374 return -EINVAL;
2375
2376 params.n_scan_plans = req->n_scan_plans;
2377 params.scan_plans = req->scan_plans;
2378
2379 iwl_mvm_fill_scan_type(mvm, ¶ms, vif);
2380
2381 /* In theory, LMAC scans can handle a 32-bit delay, but since
2382 * waiting for over 18 hours to start the scan is a bit silly
2383 * and to keep it aligned with UMAC scans (which only support
2384 * 16-bit delays), trim it down to 16-bits.
2385 */
2386 if (req->delay > U16_MAX) {
2387 IWL_DEBUG_SCAN(mvm,
2388 "delay value is > 16-bits, set to max possible\n");
2389 params.delay = U16_MAX;
2390 } else {
2391 params.delay = req->delay;
2392 }
2393
2394 ret = iwl_mvm_config_sched_scan_profiles(mvm, req);
2395 if (ret)
2396 return ret;
2397
2398 iwl_mvm_build_scan_probe(mvm, vif, ies, ¶ms);
2399
2400 ret = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, ¶ms, type);
2401
2402 if (ret)
2403 return ret;
2404
2405 ret = iwl_mvm_send_cmd(mvm, &hcmd);
2406 if (!ret) {
2407 IWL_DEBUG_SCAN(mvm,
2408 "Sched scan request was sent successfully\n");
2409 mvm->scan_status |= type;
2410 } else {
2411 /* If the scan failed, it usually means that the FW was unable
2412 * to allocate the time events. Warn on it, but maybe we
2413 * should try to send the command again with different params.
2414 */
2415 IWL_ERR(mvm, "Sched scan failed! ret %d\n", ret);
2416 }
2417
2418 return ret;
2419 }
2420
iwl_mvm_rx_umac_scan_complete_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)2421 void iwl_mvm_rx_umac_scan_complete_notif(struct iwl_mvm *mvm,
2422 struct iwl_rx_cmd_buffer *rxb)
2423 {
2424 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2425 struct iwl_umac_scan_complete *notif = (void *)pkt->data;
2426 u32 uid = __le32_to_cpu(notif->uid);
2427 bool aborted = (notif->status == IWL_SCAN_OFFLOAD_ABORTED);
2428
2429 if (WARN_ON(!(mvm->scan_uid_status[uid] & mvm->scan_status)))
2430 return;
2431
2432 /* if the scan is already stopping, we don't need to notify mac80211 */
2433 if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_REGULAR) {
2434 struct cfg80211_scan_info info = {
2435 .aborted = aborted,
2436 .scan_start_tsf = mvm->scan_start,
2437 };
2438
2439 memcpy(info.tsf_bssid, mvm->scan_vif->bssid, ETH_ALEN);
2440 ieee80211_scan_completed(mvm->hw, &info);
2441 mvm->scan_vif = NULL;
2442 cancel_delayed_work(&mvm->scan_timeout_dwork);
2443 iwl_mvm_resume_tcm(mvm);
2444 } else if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_SCHED) {
2445 ieee80211_sched_scan_stopped(mvm->hw);
2446 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
2447 }
2448
2449 mvm->scan_status &= ~mvm->scan_uid_status[uid];
2450 IWL_DEBUG_SCAN(mvm,
2451 "Scan completed, uid %u type %u, status %s, EBS status %s\n",
2452 uid, mvm->scan_uid_status[uid],
2453 notif->status == IWL_SCAN_OFFLOAD_COMPLETED ?
2454 "completed" : "aborted",
2455 iwl_mvm_ebs_status_str(notif->ebs_status));
2456 IWL_DEBUG_SCAN(mvm,
2457 "Last line %d, Last iteration %d, Time from last iteration %d\n",
2458 notif->last_schedule, notif->last_iter,
2459 __le32_to_cpu(notif->time_from_last_iter));
2460
2461 if (notif->ebs_status != IWL_SCAN_EBS_SUCCESS &&
2462 notif->ebs_status != IWL_SCAN_EBS_INACTIVE)
2463 mvm->last_ebs_successful = false;
2464
2465 mvm->scan_uid_status[uid] = 0;
2466 }
2467
iwl_mvm_rx_umac_scan_iter_complete_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)2468 void iwl_mvm_rx_umac_scan_iter_complete_notif(struct iwl_mvm *mvm,
2469 struct iwl_rx_cmd_buffer *rxb)
2470 {
2471 struct iwl_rx_packet *pkt = rxb_addr(rxb);
2472 struct iwl_umac_scan_iter_complete_notif *notif = (void *)pkt->data;
2473
2474 mvm->scan_start = le64_to_cpu(notif->start_tsf);
2475
2476 IWL_DEBUG_SCAN(mvm,
2477 "UMAC Scan iteration complete: status=0x%x scanned_channels=%d\n",
2478 notif->status, notif->scanned_channels);
2479
2480 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) {
2481 IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n");
2482 ieee80211_sched_scan_results(mvm->hw);
2483 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED;
2484 }
2485
2486 IWL_DEBUG_SCAN(mvm,
2487 "UMAC Scan iteration complete: scan started at %llu (TSF)\n",
2488 mvm->scan_start);
2489 }
2490
iwl_mvm_umac_scan_abort(struct iwl_mvm * mvm,int type)2491 static int iwl_mvm_umac_scan_abort(struct iwl_mvm *mvm, int type)
2492 {
2493 struct iwl_umac_scan_abort cmd = {};
2494 int uid, ret;
2495
2496 lockdep_assert_held(&mvm->mutex);
2497
2498 /* We should always get a valid index here, because we already
2499 * checked that this type of scan was running in the generic
2500 * code.
2501 */
2502 uid = iwl_mvm_scan_uid_by_status(mvm, type);
2503 if (WARN_ON_ONCE(uid < 0))
2504 return uid;
2505
2506 cmd.uid = cpu_to_le32(uid);
2507
2508 IWL_DEBUG_SCAN(mvm, "Sending scan abort, uid %u\n", uid);
2509
2510 ret = iwl_mvm_send_cmd_pdu(mvm,
2511 iwl_cmd_id(SCAN_ABORT_UMAC,
2512 IWL_ALWAYS_LONG_GROUP, 0),
2513 0, sizeof(cmd), &cmd);
2514 if (!ret)
2515 mvm->scan_uid_status[uid] = type << IWL_MVM_SCAN_STOPPING_SHIFT;
2516
2517 return ret;
2518 }
2519
iwl_mvm_scan_stop_wait(struct iwl_mvm * mvm,int type)2520 static int iwl_mvm_scan_stop_wait(struct iwl_mvm *mvm, int type)
2521 {
2522 struct iwl_notification_wait wait_scan_done;
2523 static const u16 scan_done_notif[] = { SCAN_COMPLETE_UMAC,
2524 SCAN_OFFLOAD_COMPLETE, };
2525 int ret;
2526
2527 lockdep_assert_held(&mvm->mutex);
2528
2529 iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_done,
2530 scan_done_notif,
2531 ARRAY_SIZE(scan_done_notif),
2532 NULL, NULL);
2533
2534 IWL_DEBUG_SCAN(mvm, "Preparing to stop scan, type %x\n", type);
2535
2536 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
2537 ret = iwl_mvm_umac_scan_abort(mvm, type);
2538 else
2539 ret = iwl_mvm_lmac_scan_abort(mvm);
2540
2541 if (ret) {
2542 IWL_DEBUG_SCAN(mvm, "couldn't stop scan type %d\n", type);
2543 iwl_remove_notification(&mvm->notif_wait, &wait_scan_done);
2544 return ret;
2545 }
2546
2547 return iwl_wait_notification(&mvm->notif_wait, &wait_scan_done,
2548 1 * HZ);
2549 }
2550
2551 #define IWL_SCAN_REQ_UMAC_HANDLE_SIZE(_ver) { \
2552 case (_ver): return sizeof(struct iwl_scan_req_umac_v##_ver); \
2553 }
2554
iwl_scan_req_umac_get_size(u8 scan_ver)2555 static int iwl_scan_req_umac_get_size(u8 scan_ver)
2556 {
2557 switch (scan_ver) {
2558 IWL_SCAN_REQ_UMAC_HANDLE_SIZE(14);
2559 IWL_SCAN_REQ_UMAC_HANDLE_SIZE(12);
2560 }
2561
2562 return 0;
2563 }
2564
iwl_mvm_scan_size(struct iwl_mvm * mvm)2565 int iwl_mvm_scan_size(struct iwl_mvm *mvm)
2566 {
2567 int base_size, tail_size;
2568 u8 scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, IWL_ALWAYS_LONG_GROUP,
2569 SCAN_REQ_UMAC,
2570 IWL_FW_CMD_VER_UNKNOWN);
2571
2572 base_size = iwl_scan_req_umac_get_size(scan_ver);
2573 if (base_size)
2574 return base_size;
2575
2576
2577 if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm))
2578 base_size = IWL_SCAN_REQ_UMAC_SIZE_V8;
2579 else if (iwl_mvm_is_adaptive_dwell_supported(mvm))
2580 base_size = IWL_SCAN_REQ_UMAC_SIZE_V7;
2581 else if (iwl_mvm_cdb_scan_api(mvm))
2582 base_size = IWL_SCAN_REQ_UMAC_SIZE_V6;
2583 else
2584 base_size = IWL_SCAN_REQ_UMAC_SIZE_V1;
2585
2586 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2587 if (iwl_mvm_is_scan_ext_chan_supported(mvm))
2588 tail_size = sizeof(struct iwl_scan_req_umac_tail_v2);
2589 else
2590 tail_size = sizeof(struct iwl_scan_req_umac_tail_v1);
2591
2592 return base_size +
2593 sizeof(struct iwl_scan_channel_cfg_umac) *
2594 mvm->fw->ucode_capa.n_scan_channels +
2595 tail_size;
2596 }
2597 return sizeof(struct iwl_scan_req_lmac) +
2598 sizeof(struct iwl_scan_channel_cfg_lmac) *
2599 mvm->fw->ucode_capa.n_scan_channels +
2600 sizeof(struct iwl_scan_probe_req_v1);
2601 }
2602
2603 /*
2604 * This function is used in nic restart flow, to inform mac80211 about scans
2605 * that was aborted by restart flow or by an assert.
2606 */
iwl_mvm_report_scan_aborted(struct iwl_mvm * mvm)2607 void iwl_mvm_report_scan_aborted(struct iwl_mvm *mvm)
2608 {
2609 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2610 int uid, i;
2611
2612 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_REGULAR);
2613 if (uid >= 0) {
2614 struct cfg80211_scan_info info = {
2615 .aborted = true,
2616 };
2617
2618 ieee80211_scan_completed(mvm->hw, &info);
2619 mvm->scan_uid_status[uid] = 0;
2620 }
2621 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_SCHED);
2622 if (uid >= 0 && !mvm->fw_restart) {
2623 ieee80211_sched_scan_stopped(mvm->hw);
2624 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
2625 mvm->scan_uid_status[uid] = 0;
2626 }
2627 uid = iwl_mvm_scan_uid_by_status(mvm,
2628 IWL_MVM_SCAN_STOPPING_REGULAR);
2629 if (uid >= 0)
2630 mvm->scan_uid_status[uid] = 0;
2631
2632 uid = iwl_mvm_scan_uid_by_status(mvm,
2633 IWL_MVM_SCAN_STOPPING_SCHED);
2634 if (uid >= 0)
2635 mvm->scan_uid_status[uid] = 0;
2636
2637 /* We shouldn't have any UIDs still set. Loop over all the
2638 * UIDs to make sure there's nothing left there and warn if
2639 * any is found.
2640 */
2641 for (i = 0; i < mvm->max_scans; i++) {
2642 if (WARN_ONCE(mvm->scan_uid_status[i],
2643 "UMAC scan UID %d status was not cleaned\n",
2644 i))
2645 mvm->scan_uid_status[i] = 0;
2646 }
2647 } else {
2648 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) {
2649 struct cfg80211_scan_info info = {
2650 .aborted = true,
2651 };
2652
2653 ieee80211_scan_completed(mvm->hw, &info);
2654 }
2655
2656 /* Sched scan will be restarted by mac80211 in
2657 * restart_hw, so do not report if FW is about to be
2658 * restarted.
2659 */
2660 if ((mvm->scan_status & IWL_MVM_SCAN_SCHED) &&
2661 !mvm->fw_restart) {
2662 ieee80211_sched_scan_stopped(mvm->hw);
2663 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
2664 }
2665 }
2666 }
2667
iwl_mvm_scan_stop(struct iwl_mvm * mvm,int type,bool notify)2668 int iwl_mvm_scan_stop(struct iwl_mvm *mvm, int type, bool notify)
2669 {
2670 int ret;
2671
2672 if (!(mvm->scan_status & type))
2673 return 0;
2674
2675 if (iwl_mvm_is_radio_killed(mvm)) {
2676 ret = 0;
2677 goto out;
2678 }
2679
2680 ret = iwl_mvm_scan_stop_wait(mvm, type);
2681 if (!ret)
2682 mvm->scan_status |= type << IWL_MVM_SCAN_STOPPING_SHIFT;
2683 out:
2684 /* Clear the scan status so the next scan requests will
2685 * succeed and mark the scan as stopping, so that the Rx
2686 * handler doesn't do anything, as the scan was stopped from
2687 * above.
2688 */
2689 mvm->scan_status &= ~type;
2690
2691 if (type == IWL_MVM_SCAN_REGULAR) {
2692 cancel_delayed_work(&mvm->scan_timeout_dwork);
2693 if (notify) {
2694 struct cfg80211_scan_info info = {
2695 .aborted = true,
2696 };
2697
2698 ieee80211_scan_completed(mvm->hw, &info);
2699 }
2700 } else if (notify) {
2701 ieee80211_sched_scan_stopped(mvm->hw);
2702 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
2703 }
2704
2705 return ret;
2706 }
2707
