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Merge remote-tracking branches 'asoc/topic/fsl-spdif', 'asoc/topic/hdmi', 'asoc/topic...
[linux-2.6-block.git] / drivers / net / wireless / intel / iwlwifi / mvm / scan.c
CommitLineData
8ca151b5
JB		 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 *
51368bf7 8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9af91f46 9 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
a339e918 10 * Copyright(c) 2016 Intel Deutschland GmbH
8ca151b5
JB		 11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of version 2 of the GNU General Public License as
14 * published by the Free Software Foundation.
15 *
16 * This program is distributed in the hope that it will be useful, but
17 * WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
24 * USA
25 *
26 * The full GNU General Public License is included in this distribution
410dc5aa 27 * in the file called COPYING.
8ca151b5
JB		 28 *
29 * Contact Information:
cb2f8277 30 * Intel Linux Wireless <linuxwifi@intel.com>
8ca151b5
JB		 31 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
32 *
33 * BSD LICENSE
34 *
51368bf7 35 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9af91f46 36 * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
a339e918 37 * Copyright(c) 2016 Intel Deutschland GmbH
8ca151b5
JB		 38 * All rights reserved.
39 *
40 * Redistribution and use in source and binary forms, with or without
41 * modification, are permitted provided that the following conditions
42 * are met:
43 *
44 * * Redistributions of source code must retain the above copyright
45 * notice, this list of conditions and the following disclaimer.
46 * * Redistributions in binary form must reproduce the above copyright
47 * notice, this list of conditions and the following disclaimer in
48 * the documentation and/or other materials provided with the
49 * distribution.
50 * * Neither the name Intel Corporation nor the names of its
51 * contributors may be used to endorse or promote products derived
52 * from this software without specific prior written permission.
53 *
54 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
55 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
56 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
57 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
58 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
59 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
60 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
61 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
62 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
63 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
64 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
65 *
66 *****************************************************************************/
67
68#include <linux/etherdevice.h>
69#include <net/mac80211.h>
70
71#include "mvm.h"
8ca151b5 72#include "fw-api-scan.h"
728e825f 73#include "iwl-io.h"
8ca151b5 74
a1ed4025
HD		 75#define IWL_DENSE_EBS_SCAN_RATIO 5
76#define IWL_SPARSE_EBS_SCAN_RATIO 1
8a110d9b 77
9437e994
DS		 78enum iwl_mvm_traffic_load {
79 IWL_MVM_TRAFFIC_LOW,
80 IWL_MVM_TRAFFIC_MEDIUM,
81 IWL_MVM_TRAFFIC_HIGH,
82};
83
84struct iwl_mvm_scan_timing_params {
85 u32 dwell_active;
86 u32 dwell_passive;
87 u32 dwell_fragmented;
c3e230b1 88 u32 dwell_extended;
8a110d9b 89 u32 suspend_time;
9437e994
DS		 90 u32 max_out_time;
91};
92
93static struct iwl_mvm_scan_timing_params scan_timing[] = {
94 [IWL_SCAN_TYPE_UNASSOC] = {
95 .dwell_active = 10,
96 .dwell_passive = 110,
97 .dwell_fragmented = 44,
ca95ff3a 98 .dwell_extended = 90,
9437e994
DS		 99 .suspend_time = 0,
100 .max_out_time = 0,
101 },
102 [IWL_SCAN_TYPE_WILD] = {
103 .dwell_active = 10,
104 .dwell_passive = 110,
105 .dwell_fragmented = 44,
ca95ff3a 106 .dwell_extended = 90,
9437e994
DS		 107 .suspend_time = 30,
108 .max_out_time = 120,
109 },
110 [IWL_SCAN_TYPE_MILD] = {
111 .dwell_active = 10,
112 .dwell_passive = 110,
113 .dwell_fragmented = 44,
ca95ff3a 114 .dwell_extended = 90,
9437e994
DS		 115 .suspend_time = 120,
116 .max_out_time = 120,
117 },
118 [IWL_SCAN_TYPE_FRAGMENTED] = {
119 .dwell_active = 10,
120 .dwell_passive = 110,
121 .dwell_fragmented = 44,
122 .suspend_time = 95,
123 .max_out_time = 44,
124 },
125};
126
127struct iwl_mvm_scan_params {
128 enum iwl_mvm_scan_type type;
f7b788b4 129 u32 n_channels;
283c2491 130 u16 delay;
f7b788b4
LC		 131 int n_ssids;
132 struct cfg80211_ssid *ssids;
133 struct ieee80211_channel **channels;
f7b788b4
LC		 134 u32 flags;
135 u8 *mac_addr;
136 u8 *mac_addr_mask;
137 bool no_cck;
138 bool pass_all;
139 int n_match_sets;
45d1b12e 140 struct iwl_scan_probe_req preq;
f7b788b4 141 struct cfg80211_match_set *match_sets;
cd55ccea
AS		 142 int n_scan_plans;
143 struct cfg80211_sched_scan_plan *scan_plans;
8a110d9b 144};
8ca151b5 145
d2496221
DS		 146static u8 iwl_mvm_scan_rx_ant(struct iwl_mvm *mvm)
147{
148 if (mvm->scan_rx_ant != ANT_NONE)
149 return mvm->scan_rx_ant;
a0544272 150 return iwl_mvm_get_valid_rx_ant(mvm);
d2496221
DS		 151}
152
8ca151b5
JB		 153static inline __le16 iwl_mvm_scan_rx_chain(struct iwl_mvm *mvm)
154{
155 u16 rx_chain;
91b05d10 156 u8 rx_ant;
8ca151b5 157
d2496221 158 rx_ant = iwl_mvm_scan_rx_ant(mvm);
8ca151b5
JB		 159 rx_chain = rx_ant << PHY_RX_CHAIN_VALID_POS;
160 rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_MIMO_SEL_POS;
161 rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_SEL_POS;
162 rx_chain |= 0x1 << PHY_RX_CHAIN_DRIVER_FORCE_POS;
163 return cpu_to_le16(rx_chain);
164}
165
57fbcce3 166static __le32 iwl_mvm_scan_rxon_flags(enum nl80211_band band)
8ca151b5 167{
57fbcce3 168 if (band == NL80211_BAND_2GHZ)
8ca151b5
JB		 169 return cpu_to_le32(PHY_BAND_24);
170 else
171 return cpu_to_le32(PHY_BAND_5);
172}
173
174static inline __le32
57fbcce3 175iwl_mvm_scan_rate_n_flags(struct iwl_mvm *mvm, enum nl80211_band band,
8ca151b5
JB		 176 bool no_cck)
177{
178 u32 tx_ant;
179
180 mvm->scan_last_antenna_idx =
a0544272 181 iwl_mvm_next_antenna(mvm, iwl_mvm_get_valid_tx_ant(mvm),
8ca151b5
JB		 182 mvm->scan_last_antenna_idx);
183 tx_ant = BIT(mvm->scan_last_antenna_idx) << RATE_MCS_ANT_POS;
184
57fbcce3 185 if (band == NL80211_BAND_2GHZ && !no_cck)
8ca151b5
JB		 186 return cpu_to_le32(IWL_RATE_1M_PLCP | RATE_MCS_CCK_MSK |
187 tx_ant);
188 else
189 return cpu_to_le32(IWL_RATE_6M_PLCP | tx_ant);
190}
191
8a110d9b
AB		 192static void iwl_mvm_scan_condition_iterator(void *data, u8 *mac,
193 struct ieee80211_vif *vif)
61f6325d 194{
8a110d9b 195 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
c3f8d0a3 196 int *global_cnt = data;
61f6325d 197
1e2ebe0e
DS		 198 if (vif->type != NL80211_IFTYPE_P2P_DEVICE && mvmvif->phy_ctxt &&
199 mvmvif->phy_ctxt->id < MAX_PHYS)
c3f8d0a3 200 *global_cnt += 1;
8a110d9b
AB		 201}
202
9437e994
DS		 203static enum iwl_mvm_traffic_load iwl_mvm_get_traffic_load(struct iwl_mvm *mvm)
204{
205 return IWL_MVM_TRAFFIC_LOW;
206}
207
208static enum
355346ba 209iwl_mvm_scan_type iwl_mvm_get_scan_type(struct iwl_mvm *mvm, bool p2p_device)
8a110d9b 210{
c3f8d0a3 211 int global_cnt = 0;
9437e994
DS		 212 enum iwl_mvm_traffic_load load;
213 bool low_latency;
8a110d9b
AB		 214
215 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
216 IEEE80211_IFACE_ITER_NORMAL,
217 iwl_mvm_scan_condition_iterator,
c3f8d0a3 218 &global_cnt);
c3f8d0a3 219 if (!global_cnt)
9437e994 220 return IWL_SCAN_TYPE_UNASSOC;
ef67f18d 221
9437e994
DS		 222 load = iwl_mvm_get_traffic_load(mvm);
223 low_latency = iwl_mvm_low_latency(mvm);
6bcb00f6 224
355346ba 225 if ((load == IWL_MVM_TRAFFIC_HIGH || low_latency) && !p2p_device &&
9437e994
DS		 226 fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_FRAGMENTED_SCAN))
227 return IWL_SCAN_TYPE_FRAGMENTED;
190f1029 228
9437e994
DS		 229 if (load >= IWL_MVM_TRAFFIC_MEDIUM || low_latency)
230 return IWL_SCAN_TYPE_MILD;
0616c62c 231
9437e994 232 return IWL_SCAN_TYPE_WILD;
61f6325d
HD		 233}
234
73897bd1
AO		 235static inline bool iwl_mvm_rrm_scan_needed(struct iwl_mvm *mvm)
236{
237 /* require rrm scan whenever the fw supports it */
859d914c
JB		 238 return fw_has_capa(&mvm->fw->ucode_capa,
239 IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT);
73897bd1
AO		 240}
241
999d2568 242static int iwl_mvm_max_scan_ie_fw_cmd_room(struct iwl_mvm *mvm)
48849a41
AO		 243{
244 int max_probe_len;
245
1f940386 246 max_probe_len = SCAN_OFFLOAD_PROBE_REQ_SIZE;
48849a41
AO		 247
248 /* we create the 802.11 header and SSID element */
249 max_probe_len -= 24 + 2;
250
66dc5272
AO		 251 /* DS parameter set element is added on 2.4GHZ band if required */
252 if (iwl_mvm_rrm_scan_needed(mvm))
253 max_probe_len -= 3;
254
48849a41
AO		 255 return max_probe_len;
256}
257
999d2568 258int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm)
48849a41 259{
999d2568 260 int max_ie_len = iwl_mvm_max_scan_ie_fw_cmd_room(mvm);
48849a41 261
48849a41
AO		 262 /* TODO: [BUG] This function should return the maximum allowed size of
263 * scan IEs, however the LMAC scan api contains both 2GHZ and 5GHZ IEs
264 * in the same command. So the correct implementation of this function
265 * is just iwl_mvm_max_scan_ie_fw_cmd_room() / 2. Currently the scan
266 * command has only 512 bytes and it would leave us with about 240
267 * bytes for scan IEs, which is clearly not enough. So meanwhile
268 * we will report an incorrect value. This may result in a failure to
269 * issue a scan in unified_scan_lmac and unified_sched_scan_lmac
270 * functions with -ENOBUFS, if a large enough probe will be provided.
271 */
272 return max_ie_len;
273}
274
1fa1bcc0
AS		 275static u8 *iwl_mvm_dump_channel_list(struct iwl_scan_results_notif *res,
276 int num_res, u8 *buf, size_t buf_size)
277{
278 int i;
279 u8 *pos = buf, *end = buf + buf_size;
280
281 for (i = 0; pos < end && i < num_res; i++)
282 pos += snprintf(pos, end - pos, " %u", res[i].channel);
283
284 /* terminate the string in case the buffer was too short */
285 *(buf + buf_size - 1) = '\0';
286
287 return buf;
288}
289
0416841d
JB		 290void iwl_mvm_rx_lmac_scan_iter_complete_notif(struct iwl_mvm *mvm,
291 struct iwl_rx_cmd_buffer *rxb)
e5d74646
AB		 292{
293 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1083fd73 294 struct iwl_lmac_scan_complete_notif *notif = (void *)pkt->data;
1fa1bcc0 295 u8 buf[256];
e5d74646
AB		 296
297 IWL_DEBUG_SCAN(mvm,
1fa1bcc0
AS		 298 "Scan offload iteration complete: status=0x%x scanned channels=%d channels list: %s\n",
299 notif->status, notif->scanned_channels,
300 iwl_mvm_dump_channel_list(notif->results,
301 notif->scanned_channels, buf,
302 sizeof(buf)));
a339e918
LC		 303
304 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) {
305 IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n");
306 ieee80211_sched_scan_results(mvm->hw);
307 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED;
308 }
e5d74646
AB		 309}
310
0416841d
JB		 311void iwl_mvm_rx_scan_match_found(struct iwl_mvm *mvm,
312 struct iwl_rx_cmd_buffer *rxb)
35a000b7 313{
d2496221
DS		 314 IWL_DEBUG_SCAN(mvm, "Scheduled scan results\n");
315 ieee80211_sched_scan_results(mvm->hw);
35a000b7
DS		 316}
317
f0bf8593
DS		 318static const char *iwl_mvm_ebs_status_str(enum iwl_scan_ebs_status status)
319{
320 switch (status) {
321 case IWL_SCAN_EBS_SUCCESS:
322 return "successful";
323 case IWL_SCAN_EBS_INACTIVE:
324 return "inactive";
325 case IWL_SCAN_EBS_FAILED:
326 case IWL_SCAN_EBS_CHAN_NOT_FOUND:
327 default:
328 return "failed";
329 }
330}
331
0416841d
JB		 332void iwl_mvm_rx_lmac_scan_complete_notif(struct iwl_mvm *mvm,
333 struct iwl_rx_cmd_buffer *rxb)
35a000b7
DS		 334{
335 struct iwl_rx_packet *pkt = rxb_addr(rxb);
9af91f46
LC		 336 struct iwl_periodic_scan_complete *scan_notif = (void *)pkt->data;
337 bool aborted = (scan_notif->status == IWL_SCAN_OFFLOAD_ABORTED);
fb98be5e 338
72a33568
LC		 339 /* If this happens, the firmware has mistakenly sent an LMAC
340 * notification during UMAC scans -- warn and ignore it.
341 */
342 if (WARN_ON_ONCE(fw_has_capa(&mvm->fw->ucode_capa,
343 IWL_UCODE_TLV_CAPA_UMAC_SCAN)))
344 return;
345
a6623e84
JB		 346 /* scan status must be locked for proper checking */
347 lockdep_assert_held(&mvm->mutex);
348
9af91f46
LC		 349 /* We first check if we were stopping a scan, in which case we
350 * just clear the stopping flag. Then we check if it was a
351 * firmware initiated stop, in which case we need to inform
352 * mac80211.
353 * Note that we can have a stopping and a running scan
354 * simultaneously, but we can't have two different types of
355 * scans stopping or running at the same time (since LMAC
356 * doesn't support it).
357 */
358
359 if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_SCHED) {
360 WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR);
361
a7b3bc91 362 IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n",
9af91f46 363 aborted ? "aborted" : "completed",
a7b3bc91
AB		 364 iwl_mvm_ebs_status_str(scan_notif->ebs_status));
365 IWL_DEBUG_SCAN(mvm,
366 "Last line %d, Last iteration %d, Time after last iteration %d\n",
1a84e771
AB		 367 scan_notif->last_schedule_line,
368 scan_notif->last_schedule_iteration,
369 __le32_to_cpu(scan_notif->time_after_last_iter));
e820c2da 370
9af91f46
LC		 371 mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_SCHED;
372 } else if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR) {
373 IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s\n",
374 aborted ? "aborted" : "completed",
f0bf8593 375 iwl_mvm_ebs_status_str(scan_notif->ebs_status));
35a000b7 376
9af91f46
LC		 377 mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_REGULAR;
378 } else if (mvm->scan_status & IWL_MVM_SCAN_SCHED) {
379 WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_REGULAR);
380
a7b3bc91 381 IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n",
9af91f46 382 aborted ? "aborted" : "completed",
a7b3bc91
AB		 383 iwl_mvm_ebs_status_str(scan_notif->ebs_status));
384 IWL_DEBUG_SCAN(mvm,
385 "Last line %d, Last iteration %d, Time after last iteration %d (FW)\n",
1a84e771
AB		 386 scan_notif->last_schedule_line,
387 scan_notif->last_schedule_iteration,
388 __le32_to_cpu(scan_notif->time_after_last_iter));
9af91f46
LC		 389
390 mvm->scan_status &= ~IWL_MVM_SCAN_SCHED;
33ea27f6 391 ieee80211_sched_scan_stopped(mvm->hw);
a339e918 392 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
9af91f46
LC		 393 } else if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) {
394 IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s (FW)\n",
395 aborted ? "aborted" : "completed",
f0bf8593 396 iwl_mvm_ebs_status_str(scan_notif->ebs_status));
9af91f46
LC		 397
398 mvm->scan_status &= ~IWL_MVM_SCAN_REGULAR;
fb98be5e 399 ieee80211_scan_completed(mvm->hw,
1f940386 400 scan_notif->status == IWL_SCAN_OFFLOAD_ABORTED);
4ff78181 401 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
728e825f
LC		 402 del_timer(&mvm->scan_timer);
403 } else {
404 IWL_ERR(mvm,
405 "got scan complete notification but no scan is running\n");
33ea27f6 406 }
35a000b7 407
f0bf8593
DS		 408 mvm->last_ebs_successful =
409 scan_notif->ebs_status == IWL_SCAN_EBS_SUCCESS ||
410 scan_notif->ebs_status == IWL_SCAN_EBS_INACTIVE;
35a000b7
DS		 411}
412
35a000b7
DS		 413static int iwl_ssid_exist(u8 *ssid, u8 ssid_len, struct iwl_ssid_ie *ssid_list)
414{
415 int i;
416
417 for (i = 0; i < PROBE_OPTION_MAX; i++) {
418 if (!ssid_list[i].len)
419 break;
420 if (ssid_list[i].len == ssid_len &&
421 !memcmp(ssid_list->ssid, ssid, ssid_len))
422 return i;
423 }
424 return -1;
425}
426
e2ec4f6d
LC		 427/* We insert the SSIDs in an inverted order, because the FW will
428 * invert it back.
429 */
430static void iwl_scan_build_ssids(struct iwl_mvm_scan_params *params,
431 struct iwl_ssid_ie *ssids,
432 u32 *ssid_bitmap)
35a000b7
DS		 433{
434 int i, j;
435 int index;
436
437 /*
438 * copy SSIDs from match list.
439 * iwl_config_sched_scan_profiles() uses the order of these ssids to
440 * config match list.
441 */
1c1b5b26
LC		 442 for (i = 0, j = params->n_match_sets - 1;
443 j >= 0 && i < PROBE_OPTION_MAX;
444 i++, j--) {
ea73cbce 445 /* skip empty SSID matchsets */
1c1b5b26 446 if (!params->match_sets[j].ssid.ssid_len)
ea73cbce 447 continue;
e2ec4f6d
LC		 448 ssids[i].id = WLAN_EID_SSID;
449 ssids[i].len = params->match_sets[j].ssid.ssid_len;
450 memcpy(ssids[i].ssid, params->match_sets[j].ssid.ssid,
451 ssids[i].len);
35a000b7
DS		 452 }
453
454 /* add SSIDs from scan SSID list */
455 *ssid_bitmap = 0;
1c1b5b26
LC		 456 for (j = params->n_ssids - 1;
457 j >= 0 && i < PROBE_OPTION_MAX;
458 i++, j--) {
f7b788b4
LC		 459 index = iwl_ssid_exist(params->ssids[j].ssid,
460 params->ssids[j].ssid_len,
e2ec4f6d 461 ssids);
35a000b7 462 if (index < 0) {
e2ec4f6d
LC		 463 ssids[i].id = WLAN_EID_SSID;
464 ssids[i].len = params->ssids[j].ssid_len;
465 memcpy(ssids[i].ssid, params->ssids[j].ssid,
466 ssids[i].len);
467 *ssid_bitmap |= BIT(i);
35a000b7 468 } else {
e2ec4f6d 469 *ssid_bitmap |= BIT(index);
35a000b7
DS		 470 }
471 }
472}
473
416c9b50
LC		 474static int
475iwl_mvm_config_sched_scan_profiles(struct iwl_mvm *mvm,
476 struct cfg80211_sched_scan_request *req)
35a000b7
DS		 477{
478 struct iwl_scan_offload_profile *profile;
479 struct iwl_scan_offload_profile_cfg *profile_cfg;
480 struct iwl_scan_offload_blacklist *blacklist;
481 struct iwl_host_cmd cmd = {
482 .id = SCAN_OFFLOAD_UPDATE_PROFILES_CMD,
35a000b7
DS		 483 .len[1] = sizeof(*profile_cfg),
484 .dataflags[0] = IWL_HCMD_DFL_NOCOPY,
485 .dataflags[1] = IWL_HCMD_DFL_NOCOPY,
486 };
487 int blacklist_len;
488 int i;
489 int ret;
490
491 if (WARN_ON(req->n_match_sets > IWL_SCAN_MAX_PROFILES))
46eebec9 492 return -EIO;
35a000b7
DS		 493
494 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SHORT_BL)
495 blacklist_len = IWL_SCAN_SHORT_BLACKLIST_LEN;
496 else
497 blacklist_len = IWL_SCAN_MAX_BLACKLIST_LEN;
498
499 blacklist = kzalloc(sizeof(*blacklist) * blacklist_len, GFP_KERNEL);
500 if (!blacklist)
501 return -ENOMEM;
502
503 profile_cfg = kzalloc(sizeof(*profile_cfg), GFP_KERNEL);
504 if (!profile_cfg) {
505 ret = -ENOMEM;
506 goto free_blacklist;
507 }
508
509 cmd.data[0] = blacklist;
510 cmd.len[0] = sizeof(*blacklist) * blacklist_len;
511 cmd.data[1] = profile_cfg;
512
513 /* No blacklist configuration */
514
515 profile_cfg->num_profiles = req->n_match_sets;
516 profile_cfg->active_clients = SCAN_CLIENT_SCHED_SCAN;
517 profile_cfg->pass_match = SCAN_CLIENT_SCHED_SCAN;
518 profile_cfg->match_notify = SCAN_CLIENT_SCHED_SCAN;
6e0bbe5e
DS		 519 if (!req->n_match_sets || !req->match_sets[0].ssid.ssid_len)
520 profile_cfg->any_beacon_notify = SCAN_CLIENT_SCHED_SCAN;
35a000b7
DS		 521
522 for (i = 0; i < req->n_match_sets; i++) {
523 profile = &profile_cfg->profiles[i];
524 profile->ssid_index = i;
525 /* Support any cipher and auth algorithm */
526 profile->unicast_cipher = 0xff;
527 profile->auth_alg = 0xff;
528 profile->network_type = IWL_NETWORK_TYPE_ANY;
529 profile->band_selection = IWL_SCAN_OFFLOAD_SELECT_ANY;
530 profile->client_bitmap = SCAN_CLIENT_SCHED_SCAN;
531 }
532
533 IWL_DEBUG_SCAN(mvm, "Sending scheduled scan profile config\n");
534
535 ret = iwl_mvm_send_cmd(mvm, &cmd);
536 kfree(profile_cfg);
537free_blacklist:
538 kfree(blacklist);
539
540 return ret;
541}
542
d2496221
DS		 543static bool iwl_mvm_scan_pass_all(struct iwl_mvm *mvm,
544 struct cfg80211_sched_scan_request *req)
545{
546 if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) {
547 IWL_DEBUG_SCAN(mvm,
548 "Sending scheduled scan with filtering, n_match_sets %d\n",
549 req->n_match_sets);
a339e918 550 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
d2496221
DS		 551 return false;
552 }
553
554 IWL_DEBUG_SCAN(mvm, "Sending Scheduled scan without filtering\n");
a339e918
LC		 555
556 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED;
d2496221
DS		 557 return true;
558}
559
f2461796 560static int iwl_mvm_lmac_scan_abort(struct iwl_mvm *mvm)
35a000b7
DS		 561{
562 int ret;
563 struct iwl_host_cmd cmd = {
564 .id = SCAN_OFFLOAD_ABORT_CMD,
35a000b7
DS		 565 };
566 u32 status;
567
35a000b7
DS		 568 ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status);
569 if (ret)
570 return ret;
571
572 if (status != CAN_ABORT_STATUS) {
573 /*
574 * The scan abort will return 1 for success or
575 * 2 for "failure". A failure condition can be
576 * due to simply not being in an active scan which
577 * can occur if we send the scan abort before the
578 * microcode has notified us that a scan is completed.
579 */
580 IWL_DEBUG_SCAN(mvm, "SCAN OFFLOAD ABORT ret %d.\n", status);
33ea27f6 581 ret = -ENOENT;
35a000b7
DS		 582 }
583
584 return ret;
585}
586
65ff556b
LC		 587static void iwl_mvm_scan_fill_tx_cmd(struct iwl_mvm *mvm,
588 struct iwl_scan_req_tx_cmd *tx_cmd,
589 bool no_cck)
fb98be5e
DS		 590{
591 tx_cmd[0].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL |
592 TX_CMD_FLG_BT_DIS);
593 tx_cmd[0].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm,
57fbcce3 594 NL80211_BAND_2GHZ,
fb98be5e
DS		 595 no_cck);
596 tx_cmd[0].sta_id = mvm->aux_sta.sta_id;
597
598 tx_cmd[1].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL |
599 TX_CMD_FLG_BT_DIS);
600 tx_cmd[1].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm,
57fbcce3 601 NL80211_BAND_5GHZ,
fb98be5e
DS		 602 no_cck);
603 tx_cmd[1].sta_id = mvm->aux_sta.sta_id;
604}
605
606static void
607iwl_mvm_lmac_scan_cfg_channels(struct iwl_mvm *mvm,
608 struct ieee80211_channel **channels,
609 int n_channels, u32 ssid_bitmap,
65ff556b 610 struct iwl_scan_req_lmac *cmd)
fb98be5e
DS		 611{
612 struct iwl_scan_channel_cfg_lmac *channel_cfg = (void *)&cmd->data;
613 int i;
614
615 for (i = 0; i < n_channels; i++) {
616 channel_cfg[i].channel_num =
617 cpu_to_le16(channels[i]->hw_value);
618 channel_cfg[i].iter_count = cpu_to_le16(1);
619 channel_cfg[i].iter_interval = 0;
620 channel_cfg[i].flags =
621 cpu_to_le32(IWL_UNIFIED_SCAN_CHANNEL_PARTIAL |
622 ssid_bitmap);
623 }
624}
625
66dc5272
AO		 626static u8 *iwl_mvm_copy_and_insert_ds_elem(struct iwl_mvm *mvm, const u8 *ies,
627 size_t len, u8 *const pos)
628{
629 static const u8 before_ds_params[] = {
630 WLAN_EID_SSID,
631 WLAN_EID_SUPP_RATES,
632 WLAN_EID_REQUEST,
633 WLAN_EID_EXT_SUPP_RATES,
634 };
635 size_t offs;
636 u8 *newpos = pos;
637
638 if (!iwl_mvm_rrm_scan_needed(mvm)) {
639 memcpy(newpos, ies, len);
640 return newpos + len;
641 }
642
643 offs = ieee80211_ie_split(ies, len,
644 before_ds_params,
645 ARRAY_SIZE(before_ds_params),
646 0);
647
648 memcpy(newpos, ies, offs);
649 newpos += offs;
650
651 /* Add a placeholder for DS Parameter Set element */
652 *newpos++ = WLAN_EID_DS_PARAMS;
653 *newpos++ = 1;
654 *newpos++ = 0;
655
656 memcpy(newpos, ies + offs, len - offs);
657 newpos += len - offs;
658
659 return newpos;
660}
661
fb98be5e 662static void
65ff556b
LC		 663iwl_mvm_build_scan_probe(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
664 struct ieee80211_scan_ies *ies,
45d1b12e 665 struct iwl_mvm_scan_params *params)
fb98be5e 666{
45d1b12e 667 struct ieee80211_mgmt *frame = (void *)params->preq.buf;
66dc5272 668 u8 *pos, *newpos;
45d1b12e
LC		 669 const u8 *mac_addr = params->flags & NL80211_SCAN_FLAG_RANDOM_ADDR ?
670 params->mac_addr : NULL;
fb98be5e 671
effd05ac
JB		 672 /*
673 * Unfortunately, right now the offload scan doesn't support randomising
674 * within the firmware, so until the firmware API is ready we implement
675 * it in the driver. This means that the scan iterations won't really be
676 * random, only when it's restarted, but at least that helps a bit.
677 */
678 if (mac_addr)
45d1b12e
LC		 679 get_random_mask_addr(frame->sa, mac_addr,
680 params->mac_addr_mask);
effd05ac
JB		 681 else
682 memcpy(frame->sa, vif->addr, ETH_ALEN);
683
fb98be5e
DS		 684 frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
685 eth_broadcast_addr(frame->da);
fb98be5e
DS		 686 eth_broadcast_addr(frame->bssid);
687 frame->seq_ctrl = 0;
688
689 pos = frame->u.probe_req.variable;
690 *pos++ = WLAN_EID_SSID;
691 *pos++ = 0;
692
45d1b12e
LC		 693 params->preq.mac_header.offset = 0;
694 params->preq.mac_header.len = cpu_to_le16(24 + 2);
fb98be5e 695
66dc5272
AO		 696 /* Insert ds parameter set element on 2.4 GHz band */
697 newpos = iwl_mvm_copy_and_insert_ds_elem(mvm,
57fbcce3
JB		 698 ies->ies[NL80211_BAND_2GHZ],
699 ies->len[NL80211_BAND_2GHZ],
66dc5272 700 pos);
45d1b12e
LC		 701 params->preq.band_data[0].offset = cpu_to_le16(pos - params->preq.buf);
702 params->preq.band_data[0].len = cpu_to_le16(newpos - pos);
66dc5272 703 pos = newpos;
fb98be5e 704
57fbcce3
JB		 705 memcpy(pos, ies->ies[NL80211_BAND_5GHZ],
706 ies->len[NL80211_BAND_5GHZ]);
45d1b12e
LC		 707 params->preq.band_data[1].offset = cpu_to_le16(pos - params->preq.buf);
708 params->preq.band_data[1].len =
57fbcce3
JB		 709 cpu_to_le16(ies->len[NL80211_BAND_5GHZ]);
710 pos += ies->len[NL80211_BAND_5GHZ];
fb98be5e
DS		 711
712 memcpy(pos, ies->common_ies, ies->common_ie_len);
45d1b12e
LC		 713 params->preq.common_data.offset = cpu_to_le16(pos - params->preq.buf);
714 params->preq.common_data.len = cpu_to_le16(ies->common_ie_len);
fb98be5e
DS		 715}
716
d7afbfc4
AS		 717static __le32 iwl_mvm_scan_priority(struct iwl_mvm *mvm,
718 enum iwl_scan_priority_ext prio)
719{
859d914c
JB		 720 if (fw_has_api(&mvm->fw->ucode_capa,
721 IWL_UCODE_TLV_API_EXT_SCAN_PRIORITY))
d7afbfc4
AS		 722 return cpu_to_le32(prio);
723
724 if (prio <= IWL_SCAN_PRIORITY_EXT_2)
725 return cpu_to_le32(IWL_SCAN_PRIORITY_LOW);
726
727 if (prio <= IWL_SCAN_PRIORITY_EXT_4)
728 return cpu_to_le32(IWL_SCAN_PRIORITY_MEDIUM);
729
730 return cpu_to_le32(IWL_SCAN_PRIORITY_HIGH);
731}
732
133c8259
LC		 733static void iwl_mvm_scan_lmac_dwell(struct iwl_mvm *mvm,
734 struct iwl_scan_req_lmac *cmd,
735 struct iwl_mvm_scan_params *params)
fb98be5e 736{
9437e994
DS		 737 cmd->active_dwell = scan_timing[params->type].dwell_active;
738 cmd->passive_dwell = scan_timing[params->type].dwell_passive;
739 cmd->fragmented_dwell = scan_timing[params->type].dwell_fragmented;
c3e230b1 740 cmd->extended_dwell = scan_timing[params->type].dwell_extended;
9437e994
DS		 741 cmd->max_out_time = cpu_to_le32(scan_timing[params->type].max_out_time);
742 cmd->suspend_time = cpu_to_le32(scan_timing[params->type].suspend_time);
d7afbfc4 743 cmd->scan_prio = iwl_mvm_scan_priority(mvm, IWL_SCAN_PRIORITY_EXT_6);
fb98be5e
DS		 744}
745
999d2568
LC		 746static inline bool iwl_mvm_scan_fits(struct iwl_mvm *mvm, int n_ssids,
747 struct ieee80211_scan_ies *ies,
748 int n_channels)
749{
750 return ((n_ssids <= PROBE_OPTION_MAX) &&
751 (n_channels <= mvm->fw->ucode_capa.n_scan_channels) &
752 (ies->common_ie_len +
753 ies->len[NL80211_BAND_2GHZ] +
754 ies->len[NL80211_BAND_5GHZ] <=
755 iwl_mvm_max_scan_ie_fw_cmd_room(mvm)));
756}
757
15286e26 758static inline bool iwl_mvm_scan_use_ebs(struct iwl_mvm *mvm,
cd55ccea 759 struct ieee80211_vif *vif)
fb98be5e 760{
7d7de1e9 761 const struct iwl_ucode_capabilities *capa = &mvm->fw->ucode_capa;
fb98be5e 762
7d7de1e9
LC		 763 /* We can only use EBS if:
764 * 1. the feature is supported;
765 * 2. the last EBS was successful;
15286e26
DS		 766 * 3. if only single scan, the single scan EBS API is supported;
767 * 4. it's not a p2p find operation.
7d7de1e9
LC		 768 */
769 return ((capa->flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT) &&
770 mvm->last_ebs_successful &&
15286e26 771 vif->type != NL80211_IFTYPE_P2P_DEVICE);
fb98be5e
DS		 772}
773
c3e230b1
DS		 774static inline bool iwl_mvm_is_regular_scan(struct iwl_mvm_scan_params *params)
775{
776 return params->n_scan_plans == 1 &&
777 params->scan_plans[0].iterations == 1;
778}
779
87515408 780static int iwl_mvm_scan_lmac_flags(struct iwl_mvm *mvm,
c3e230b1
DS		 781 struct iwl_mvm_scan_params *params,
782 struct ieee80211_vif *vif)
87515408
LC		 783{
784 int flags = 0;
785
786 if (params->n_ssids == 0)
787 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE;
788
789 if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0)
790 flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION;
791
9437e994 792 if (params->type == IWL_SCAN_TYPE_FRAGMENTED)
87515408
LC		 793 flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED;
794
795 if (iwl_mvm_rrm_scan_needed(mvm))
796 flags |= IWL_MVM_LMAC_SCAN_FLAGS_RRM_ENABLED;
797
798 if (params->pass_all)
799 flags |= IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL;
800 else
801 flags |= IWL_MVM_LMAC_SCAN_FLAG_MATCH;
802
803#ifdef CONFIG_IWLWIFI_DEBUGFS
804 if (mvm->scan_iter_notif_enabled)
805 flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE;
806#endif
807
a339e918
LC		 808 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED)
809 flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE;
810
c3e230b1 811 if (iwl_mvm_is_regular_scan(params) &&
ca95ff3a
DS		 812 vif->type != NL80211_IFTYPE_P2P_DEVICE &&
813 params->type != IWL_SCAN_TYPE_FRAGMENTED)
c3e230b1
DS		 814 flags |= IWL_MVM_LMAC_SCAN_FLAG_EXTENDED_DWELL;
815
87515408
LC		 816 return flags;
817}
818
7d7de1e9
LC		 819static int iwl_mvm_scan_lmac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
820 struct iwl_mvm_scan_params *params)
fb98be5e 821{
65ff556b 822 struct iwl_scan_req_lmac *cmd = mvm->scan_cmd;
45d1b12e
LC		 823 struct iwl_scan_probe_req *preq =
824 (void *)(cmd->data + sizeof(struct iwl_scan_channel_cfg_lmac) *
825 mvm->fw->ucode_capa.n_scan_channels);
87515408 826 u32 ssid_bitmap = 0;
cd55ccea 827 int i;
fb98be5e
DS		 828
829 lockdep_assert_held(&mvm->mutex);
830
133c8259
LC		 831 memset(cmd, 0, ksize(cmd));
832
cd55ccea
AS		 833 if (WARN_ON(params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS))
834 return -EINVAL;
835
133c8259 836 iwl_mvm_scan_lmac_dwell(mvm, cmd, params);
fb98be5e 837
133c8259
LC		 838 cmd->rx_chain_select = iwl_mvm_scan_rx_chain(mvm);
839 cmd->iter_num = cpu_to_le32(1);
f7b788b4 840 cmd->n_channels = (u8)params->n_channels;
fb98be5e 841
f7b788b4 842 cmd->delay = cpu_to_le32(params->delay);
2250fd94 843
c3e230b1
DS		 844 cmd->scan_flags = cpu_to_le32(iwl_mvm_scan_lmac_flags(mvm, params,
845 vif));
fb98be5e 846
f7b788b4 847 cmd->flags = iwl_mvm_scan_rxon_flags(params->channels[0]->band);
fb98be5e
DS		 848 cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP |
849 MAC_FILTER_IN_BEACON);
f7b788b4 850 iwl_mvm_scan_fill_tx_cmd(mvm, cmd->tx_cmd, params->no_cck);
e2ec4f6d
LC		 851 iwl_scan_build_ssids(params, cmd->direct_scan, &ssid_bitmap);
852
853 /* this API uses bits 1-20 instead of 0-19 */
854 ssid_bitmap <<= 1;
fb98be5e 855
cd55ccea 856 for (i = 0; i < params->n_scan_plans; i++) {
cd55ccea
AS		 857 struct cfg80211_sched_scan_plan *scan_plan =
858 &params->scan_plans[i];
859
cd55ccea
AS		 860 cmd->schedule[i].delay =
861 cpu_to_le16(scan_plan->interval);
862 cmd->schedule[i].iterations = scan_plan->iterations;
863 cmd->schedule[i].full_scan_mul = 1;
864 }
865
866 /*
867 * If the number of iterations of the last scan plan is set to
868 * zero, it should run infinitely. However, this is not always the case.
869 * For example, when regular scan is requested the driver sets one scan
870 * plan with one iteration.
871 */
872 if (!cmd->schedule[i - 1].iterations)
46eebec9 873 cmd->schedule[i - 1].iterations = 0xff;
fb98be5e 874
cd55ccea 875 if (iwl_mvm_scan_use_ebs(mvm, vif)) {
1f9c418f
DS		 876 cmd->channel_opt[0].flags =
877 cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS |
878 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
879 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD);
880 cmd->channel_opt[0].non_ebs_ratio =
881 cpu_to_le16(IWL_DENSE_EBS_SCAN_RATIO);
882 cmd->channel_opt[1].flags =
883 cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS |
884 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
885 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD);
886 cmd->channel_opt[1].non_ebs_ratio =
887 cpu_to_le16(IWL_SPARSE_EBS_SCAN_RATIO);
888 }
889
f7b788b4
LC		 890 iwl_mvm_lmac_scan_cfg_channels(mvm, params->channels,
891 params->n_channels, ssid_bitmap, cmd);
fb98be5e 892
45d1b12e 893 *preq = params->preq;
fb98be5e 894
8df3e68f 895 return 0;
fb98be5e
DS		 896}
897
d2496221
DS		 898static int rate_to_scan_rate_flag(unsigned int rate)
899{
900 static const int rate_to_scan_rate[IWL_RATE_COUNT] = {
901 [IWL_RATE_1M_INDEX] = SCAN_CONFIG_RATE_1M,
902 [IWL_RATE_2M_INDEX] = SCAN_CONFIG_RATE_2M,
903 [IWL_RATE_5M_INDEX] = SCAN_CONFIG_RATE_5M,
904 [IWL_RATE_11M_INDEX] = SCAN_CONFIG_RATE_11M,
905 [IWL_RATE_6M_INDEX] = SCAN_CONFIG_RATE_6M,
906 [IWL_RATE_9M_INDEX] = SCAN_CONFIG_RATE_9M,
907 [IWL_RATE_12M_INDEX] = SCAN_CONFIG_RATE_12M,
908 [IWL_RATE_18M_INDEX] = SCAN_CONFIG_RATE_18M,
909 [IWL_RATE_24M_INDEX] = SCAN_CONFIG_RATE_24M,
910 [IWL_RATE_36M_INDEX] = SCAN_CONFIG_RATE_36M,
911 [IWL_RATE_48M_INDEX] = SCAN_CONFIG_RATE_48M,
912 [IWL_RATE_54M_INDEX] = SCAN_CONFIG_RATE_54M,
913 };
914
915 return rate_to_scan_rate[rate];
916}
917
918static __le32 iwl_mvm_scan_config_rates(struct iwl_mvm *mvm)
919{
920 struct ieee80211_supported_band *band;
921 unsigned int rates = 0;
922 int i;
923
57fbcce3 924 band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ];
d2496221
DS		 925 for (i = 0; i < band->n_bitrates; i++)
926 rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value);
57fbcce3 927 band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ];
d2496221
DS		 928 for (i = 0; i < band->n_bitrates; i++)
929 rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value);
930
931 /* Set both basic rates and supported rates */
932 rates |= SCAN_CONFIG_SUPPORTED_RATE(rates);
933
934 return cpu_to_le32(rates);
935}
936
937int iwl_mvm_config_scan(struct iwl_mvm *mvm)
938{
d2496221
DS		 939 struct iwl_scan_config *scan_config;
940 struct ieee80211_supported_band *band;
941 int num_channels =
57fbcce3
JB		 942 mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels +
943 mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels;
88742c9e 944 int ret, i, j = 0, cmd_size;
d2496221 945 struct iwl_host_cmd cmd = {
88742c9e 946 .id = iwl_cmd_id(SCAN_CFG_CMD, IWL_ALWAYS_LONG_GROUP, 0),
d2496221 947 };
355346ba 948 enum iwl_mvm_scan_type type = iwl_mvm_get_scan_type(mvm, false);
d2496221
DS		 949
950 if (WARN_ON(num_channels > mvm->fw->ucode_capa.n_scan_channels))
951 return -ENOBUFS;
952
1c4e15a2
MS		 953 if (type == mvm->scan_type) {
954 IWL_DEBUG_SCAN(mvm,
955 "Ignoring UMAC scan config of the same type\n");
355346ba 956 return 0;
1c4e15a2 957 }
355346ba 958
d2496221
DS		 959 cmd_size = sizeof(*scan_config) + mvm->fw->ucode_capa.n_scan_channels;
960
961 scan_config = kzalloc(cmd_size, GFP_KERNEL);
962 if (!scan_config)
963 return -ENOMEM;
964
d2496221
DS		 965 scan_config->flags = cpu_to_le32(SCAN_CONFIG_FLAG_ACTIVATE |
966 SCAN_CONFIG_FLAG_ALLOW_CHUB_REQS |
967 SCAN_CONFIG_FLAG_SET_TX_CHAINS |
968 SCAN_CONFIG_FLAG_SET_RX_CHAINS |
5db81fd4 969 SCAN_CONFIG_FLAG_SET_AUX_STA_ID |
d2496221
DS		 970 SCAN_CONFIG_FLAG_SET_ALL_TIMES |
971 SCAN_CONFIG_FLAG_SET_LEGACY_RATES |
972 SCAN_CONFIG_FLAG_SET_MAC_ADDR |
973 SCAN_CONFIG_FLAG_SET_CHANNEL_FLAGS|
f9d71644 974 SCAN_CONFIG_N_CHANNELS(num_channels) |
355346ba 975 (type == IWL_SCAN_TYPE_FRAGMENTED ?
f9d71644
AS		 976 SCAN_CONFIG_FLAG_SET_FRAGMENTED :
977 SCAN_CONFIG_FLAG_CLEAR_FRAGMENTED));
a0544272 978 scan_config->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm));
d2496221
DS		 979 scan_config->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm));
980 scan_config->legacy_rates = iwl_mvm_scan_config_rates(mvm);
355346ba
AS		 981 scan_config->out_of_channel_time =
982 cpu_to_le32(scan_timing[type].max_out_time);
983 scan_config->suspend_time = cpu_to_le32(scan_timing[type].suspend_time);
984 scan_config->dwell_active = scan_timing[type].dwell_active;
985 scan_config->dwell_passive = scan_timing[type].dwell_passive;
986 scan_config->dwell_fragmented = scan_timing[type].dwell_fragmented;
c3e230b1 987 scan_config->dwell_extended = scan_timing[type].dwell_extended;
d2496221
DS		 988
989 memcpy(&scan_config->mac_addr, &mvm->addresses[0].addr, ETH_ALEN);
990
991 scan_config->bcast_sta_id = mvm->aux_sta.sta_id;
992 scan_config->channel_flags = IWL_CHANNEL_FLAG_EBS |
993 IWL_CHANNEL_FLAG_ACCURATE_EBS |
994 IWL_CHANNEL_FLAG_EBS_ADD |
995 IWL_CHANNEL_FLAG_PRE_SCAN_PASSIVE2ACTIVE;
996
57fbcce3 997 band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ];
d2496221 998 for (i = 0; i < band->n_channels; i++, j++)
a25d40e2 999 scan_config->channel_array[j] = band->channels[i].hw_value;
57fbcce3 1000 band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ];
d2496221 1001 for (i = 0; i < band->n_channels; i++, j++)
a25d40e2 1002 scan_config->channel_array[j] = band->channels[i].hw_value;
d2496221
DS		 1003
1004 cmd.data[0] = scan_config;
1005 cmd.len[0] = cmd_size;
1006 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
1007
1008 IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n");
1009
1010 ret = iwl_mvm_send_cmd(mvm, &cmd);
355346ba
AS		 1011 if (!ret)
1012 mvm->scan_type = type;
d2496221
DS		 1013
1014 kfree(scan_config);
1015 return ret;
1016}
1017
6185af2a 1018static int iwl_mvm_scan_uid_by_status(struct iwl_mvm *mvm, int status)
d2496221
DS		 1019{
1020 int i;
1021
507e4cda 1022 for (i = 0; i < mvm->max_scans; i++)
6185af2a 1023 if (mvm->scan_uid_status[i] == status)
d2496221
DS		 1024 return i;
1025
6185af2a 1026 return -ENOENT;
d2496221
DS		 1027}
1028
133c8259 1029static void iwl_mvm_scan_umac_dwell(struct iwl_mvm *mvm,
d2496221
DS		 1030 struct iwl_scan_req_umac *cmd,
1031 struct iwl_mvm_scan_params *params)
1032{
c3e230b1 1033 cmd->extended_dwell = scan_timing[params->type].dwell_extended;
9437e994
DS		 1034 cmd->active_dwell = scan_timing[params->type].dwell_active;
1035 cmd->passive_dwell = scan_timing[params->type].dwell_passive;
1036 cmd->fragmented_dwell = scan_timing[params->type].dwell_fragmented;
1037 cmd->max_out_time = cpu_to_le32(scan_timing[params->type].max_out_time);
1038 cmd->suspend_time = cpu_to_le32(scan_timing[params->type].suspend_time);
d7afbfc4
AS		 1039 cmd->scan_priority =
1040 iwl_mvm_scan_priority(mvm, IWL_SCAN_PRIORITY_EXT_6);
133c8259 1041
cd55ccea 1042 if (iwl_mvm_is_regular_scan(params))
d7afbfc4
AS		 1043 cmd->ooc_priority =
1044 iwl_mvm_scan_priority(mvm, IWL_SCAN_PRIORITY_EXT_6);
133c8259 1045 else
d7afbfc4
AS		 1046 cmd->ooc_priority =
1047 iwl_mvm_scan_priority(mvm, IWL_SCAN_PRIORITY_EXT_2);
d2496221
DS		 1048}
1049
1050static void
1051iwl_mvm_umac_scan_cfg_channels(struct iwl_mvm *mvm,
1052 struct ieee80211_channel **channels,
1053 int n_channels, u32 ssid_bitmap,
1054 struct iwl_scan_req_umac *cmd)
1055{
1056 struct iwl_scan_channel_cfg_umac *channel_cfg = (void *)&cmd->data;
1057 int i;
1058
1059 for (i = 0; i < n_channels; i++) {
1060 channel_cfg[i].flags = cpu_to_le32(ssid_bitmap);
1061 channel_cfg[i].channel_num = channels[i]->hw_value;
1062 channel_cfg[i].iter_count = 1;
1063 channel_cfg[i].iter_interval = 0;
1064 }
1065}
1066
6f4dcc76 1067static u32 iwl_mvm_scan_umac_flags(struct iwl_mvm *mvm,
c3e230b1
DS		 1068 struct iwl_mvm_scan_params *params,
1069 struct ieee80211_vif *vif)
d2496221
DS		 1070{
1071 int flags = 0;
1072
6f4dcc76 1073 if (params->n_ssids == 0)
d2496221
DS		 1074 flags = IWL_UMAC_SCAN_GEN_FLAGS_PASSIVE;
1075
6f4dcc76 1076 if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0)
d2496221
DS		 1077 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PRE_CONNECT;
1078
9437e994 1079 if (params->type == IWL_SCAN_TYPE_FRAGMENTED)
d2496221
DS		 1080 flags |= IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED;
1081
1082 if (iwl_mvm_rrm_scan_needed(mvm))
1083 flags |= IWL_UMAC_SCAN_GEN_FLAGS_RRM_ENABLED;
1084
6f4dcc76
LC		 1085 if (params->pass_all)
1086 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PASS_ALL;
1087 else
1088 flags |= IWL_UMAC_SCAN_GEN_FLAGS_MATCH;
1089
cd55ccea 1090 if (!iwl_mvm_is_regular_scan(params))
6f4dcc76
LC		 1091 flags |= IWL_UMAC_SCAN_GEN_FLAGS_PERIODIC;
1092
ee9219b2
AS		 1093#ifdef CONFIG_IWLWIFI_DEBUGFS
1094 if (mvm->scan_iter_notif_enabled)
1095 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE;
1096#endif
c3e230b1 1097
a339e918
LC		 1098 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED)
1099 flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE;
1100
c3e230b1 1101 if (iwl_mvm_is_regular_scan(params) &&
ca95ff3a
DS		 1102 vif->type != NL80211_IFTYPE_P2P_DEVICE &&
1103 params->type != IWL_SCAN_TYPE_FRAGMENTED)
c3e230b1
DS		 1104 flags |= IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL;
1105
d2496221
DS		 1106 return flags;
1107}
1108
6749dd80 1109static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
6185af2a
LC		 1110 struct iwl_mvm_scan_params *params,
1111 int type)
d2496221 1112{
d2496221
DS		 1113 struct iwl_scan_req_umac *cmd = mvm->scan_cmd;
1114 struct iwl_scan_req_umac_tail *sec_part = (void *)&cmd->data +
1115 sizeof(struct iwl_scan_channel_cfg_umac) *
1116 mvm->fw->ucode_capa.n_scan_channels;
cd55ccea 1117 int uid, i;
c8660dd5 1118 u32 ssid_bitmap = 0;
d2496221
DS		 1119
1120 lockdep_assert_held(&mvm->mutex);
1121
cd55ccea
AS		 1122 if (WARN_ON(params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS))
1123 return -EINVAL;
1124
6185af2a
LC		 1125 uid = iwl_mvm_scan_uid_by_status(mvm, 0);
1126 if (uid < 0)
1127 return uid;
d2496221 1128
133c8259 1129 memset(cmd, 0, ksize(cmd));
d2496221 1130
133c8259
LC		 1131 iwl_mvm_scan_umac_dwell(mvm, cmd, params);
1132
6185af2a 1133 mvm->scan_uid_status[uid] = type;
d2496221 1134
d2496221 1135 cmd->uid = cpu_to_le32(uid);
c3e230b1
DS		 1136 cmd->general_flags = cpu_to_le32(iwl_mvm_scan_umac_flags(mvm, params,
1137 vif));
d2496221 1138
23ae6128 1139 if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT)
8465fe6a
AS		 1140 cmd->flags = cpu_to_le32(IWL_UMAC_SCAN_FLAG_PREEMPTIVE);
1141
cd55ccea 1142 if (iwl_mvm_scan_use_ebs(mvm, vif))
d2496221
DS		 1143 cmd->channel_flags = IWL_SCAN_CHANNEL_FLAG_EBS |
1144 IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
1145 IWL_SCAN_CHANNEL_FLAG_CACHE_ADD;
1146
f7b788b4 1147 cmd->n_channels = params->n_channels;
d2496221 1148
e2ec4f6d 1149 iwl_scan_build_ssids(params, sec_part->direct_scan, &ssid_bitmap);
d2496221 1150
f7b788b4
LC		 1151 iwl_mvm_umac_scan_cfg_channels(mvm, params->channels,
1152 params->n_channels, ssid_bitmap, cmd);
d2496221 1153
cd55ccea 1154 for (i = 0; i < params->n_scan_plans; i++) {
cd55ccea
AS		 1155 struct cfg80211_sched_scan_plan *scan_plan =
1156 &params->scan_plans[i];
1157
cd55ccea
AS		 1158 sec_part->schedule[i].iter_count = scan_plan->iterations;
1159 sec_part->schedule[i].interval =
1160 cpu_to_le16(scan_plan->interval);
1161 }
1162
1163 /*
1164 * If the number of iterations of the last scan plan is set to
1165 * zero, it should run infinitely. However, this is not always the case.
1166 * For example, when regular scan is requested the driver sets one scan
1167 * plan with one iteration.
8423cdc3 1168 */
cd55ccea
AS		 1169 if (!sec_part->schedule[i - 1].iter_count)
1170 sec_part->schedule[i - 1].iter_count = 0xff;
cf5d317d 1171
283c2491 1172 sec_part->delay = cpu_to_le16(params->delay);
45d1b12e 1173 sec_part->preq = params->preq;
d2496221 1174
8df3e68f 1175 return 0;
d2496221
DS		 1176}
1177
6749dd80
LC		 1178static int iwl_mvm_num_scans(struct iwl_mvm *mvm)
1179{
1180 return hweight32(mvm->scan_status & IWL_MVM_SCAN_MASK);
1181}
1182
1183static int iwl_mvm_check_running_scans(struct iwl_mvm *mvm, int type)
1184{
1185 /* This looks a bit arbitrary, but the idea is that if we run
1186 * out of possible simultaneous scans and the userspace is
1187 * trying to run a scan type that is already running, we
1188 * return -EBUSY. But if the userspace wants to start a
1189 * different type of scan, we stop the opposite type to make
1190 * space for the new request. The reason is backwards
1191 * compatibility with old wpa_supplicant that wouldn't stop a
1192 * scheduled scan before starting a normal scan.
1193 */
1194
1195 if (iwl_mvm_num_scans(mvm) < mvm->max_scans)
1196 return 0;
1197
1198 /* Use a switch, even though this is a bitmask, so that more
1199 * than one bits set will fall in default and we will warn.
1200 */
1201 switch (type) {
1202 case IWL_MVM_SCAN_REGULAR:
1203 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK)
1204 return -EBUSY;
c7d42480 1205 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
6749dd80
LC		 1206 case IWL_MVM_SCAN_SCHED:
1207 if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK)
1208 return -EBUSY;
04b08992 1209 return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
19945dfb
LC		 1210 case IWL_MVM_SCAN_NETDETECT:
1211 /* No need to stop anything for net-detect since the
1212 * firmware is restarted anyway. This way, any sched
1213 * scans that were running will be restarted when we
1214 * resume.
1215 */
1216 return 0;
6749dd80
LC		 1217 default:
1218 WARN_ON(1);
1219 break;
1220 }
1221
1222 return -EIO;
1223}
1224
06a84db7 1225#define SCAN_TIMEOUT (20 * HZ)
728e825f
LC		 1226
1227void iwl_mvm_scan_timeout(unsigned long data)
1228{
1229 struct iwl_mvm *mvm = (struct iwl_mvm *)data;
1230
1231 IWL_ERR(mvm, "regular scan timed out\n");
1232
1233 del_timer(&mvm->scan_timer);
1234 iwl_force_nmi(mvm->trans);
1235}
1236
6749dd80
LC		 1237int iwl_mvm_reg_scan_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1238 struct cfg80211_scan_request *req,
1239 struct ieee80211_scan_ies *ies)
1240{
3db7c6e7
LC		 1241 struct iwl_host_cmd hcmd = {
1242 .len = { iwl_mvm_scan_size(mvm), },
1243 .data = { mvm->scan_cmd, },
1244 .dataflags = { IWL_HCMD_DFL_NOCOPY, },
1245 };
1246 struct iwl_mvm_scan_params params = {};
6749dd80 1247 int ret;
cd55ccea 1248 struct cfg80211_sched_scan_plan scan_plan = { .iterations = 1 };
6749dd80
LC		 1249
1250 lockdep_assert_held(&mvm->mutex);
1251
1252 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) {
1253 IWL_ERR(mvm, "scan while LAR regdomain is not set\n");
1254 return -EBUSY;
1255 }
1256
1257 ret = iwl_mvm_check_running_scans(mvm, IWL_MVM_SCAN_REGULAR);
1258 if (ret)
1259 return ret;
1260
3db7c6e7
LC		 1261 /* we should have failed registration if scan_cmd was NULL */
1262 if (WARN_ON(!mvm->scan_cmd))
1263 return -ENOMEM;
1264
1265 if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels))
1266 return -ENOBUFS;
1267
4b817051
LC		 1268 params.n_ssids = req->n_ssids;
1269 params.flags = req->flags;
f7b788b4
LC		 1270 params.n_channels = req->n_channels;
1271 params.delay = 0;
f7b788b4
LC		 1272 params.ssids = req->ssids;
1273 params.channels = req->channels;
1274 params.mac_addr = req->mac_addr;
1275 params.mac_addr_mask = req->mac_addr_mask;
1276 params.no_cck = req->no_cck;
1277 params.pass_all = true;
1278 params.n_match_sets = 0;
1279 params.match_sets = NULL;
3db7c6e7 1280
cd55ccea
AS		 1281 params.scan_plans = &scan_plan;
1282 params.n_scan_plans = 1;
cf5d317d 1283
355346ba
AS		 1284 params.type =
1285 iwl_mvm_get_scan_type(mvm,
1286 vif->type == NL80211_IFTYPE_P2P_DEVICE);
4b817051 1287
45d1b12e
LC		 1288 iwl_mvm_build_scan_probe(mvm, vif, ies, &params);
1289
859d914c 1290 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
88742c9e 1291 hcmd.id = iwl_cmd_id(SCAN_REQ_UMAC, IWL_ALWAYS_LONG_GROUP, 0);
6185af2a
LC		 1292 ret = iwl_mvm_scan_umac(mvm, vif, &params,
1293 IWL_MVM_SCAN_REGULAR);
3db7c6e7
LC		 1294 } else {
1295 hcmd.id = SCAN_OFFLOAD_REQUEST_CMD;
45d1b12e 1296 ret = iwl_mvm_scan_lmac(mvm, vif, &params);
3db7c6e7
LC		 1297 }
1298
1299 if (ret)
1300 return ret;
1301
1302 ret = iwl_mvm_send_cmd(mvm, &hcmd);
78ba82f7 1303 if (ret) {
3db7c6e7
LC		 1304 /* If the scan failed, it usually means that the FW was unable
1305 * to allocate the time events. Warn on it, but maybe we
1306 * should try to send the command again with different params.
1307 */
1308 IWL_ERR(mvm, "Scan failed! ret %d\n", ret);
78ba82f7 1309 return ret;
3db7c6e7 1310 }
6749dd80 1311
78ba82f7
EP		 1312 IWL_DEBUG_SCAN(mvm, "Scan request was sent successfully\n");
1313 mvm->scan_status |= IWL_MVM_SCAN_REGULAR;
1314 iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN);
6749dd80 1315
728e825f
LC		 1316 mod_timer(&mvm->scan_timer, jiffies + SCAN_TIMEOUT);
1317
78ba82f7 1318 return 0;
6749dd80
LC		 1319}
1320
65ff556b
LC		 1321int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm,
1322 struct ieee80211_vif *vif,
1323 struct cfg80211_sched_scan_request *req,
19945dfb
LC		 1324 struct ieee80211_scan_ies *ies,
1325 int type)
65ff556b 1326{
8df3e68f
LC		 1327 struct iwl_host_cmd hcmd = {
1328 .len = { iwl_mvm_scan_size(mvm), },
1329 .data = { mvm->scan_cmd, },
1330 .dataflags = { IWL_HCMD_DFL_NOCOPY, },
1331 };
1332 struct iwl_mvm_scan_params params = {};
65ff556b
LC		 1333 int ret;
1334
6749dd80
LC		 1335 lockdep_assert_held(&mvm->mutex);
1336
1337 if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) {
1338 IWL_ERR(mvm, "sched-scan while LAR regdomain is not set\n");
1339 return -EBUSY;
1340 }
1341
19945dfb 1342 ret = iwl_mvm_check_running_scans(mvm, type);
6749dd80
LC		 1343 if (ret)
1344 return ret;
1345
8df3e68f
LC		 1346 /* we should have failed registration if scan_cmd was NULL */
1347 if (WARN_ON(!mvm->scan_cmd))
1348 return -ENOMEM;
1349
1350 if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels))
1351 return -ENOBUFS;
1352
4b817051
LC		 1353 params.n_ssids = req->n_ssids;
1354 params.flags = req->flags;
f7b788b4 1355 params.n_channels = req->n_channels;
f7b788b4
LC		 1356 params.ssids = req->ssids;
1357 params.channels = req->channels;
1358 params.mac_addr = req->mac_addr;
1359 params.mac_addr_mask = req->mac_addr_mask;
1360 params.no_cck = false;
1361 params.pass_all = iwl_mvm_scan_pass_all(mvm, req);
1362 params.n_match_sets = req->n_match_sets;
1363 params.match_sets = req->match_sets;
cd55ccea
AS		 1364 if (!req->n_scan_plans)
1365 return -EINVAL;
f7b788b4 1366
cd55ccea
AS		 1367 params.n_scan_plans = req->n_scan_plans;
1368 params.scan_plans = req->scan_plans;
3b44a0ef 1369
355346ba
AS		 1370 params.type =
1371 iwl_mvm_get_scan_type(mvm,
1372 vif->type == NL80211_IFTYPE_P2P_DEVICE);
cf5d317d 1373
283c2491
LC		 1374 /* In theory, LMAC scans can handle a 32-bit delay, but since
1375 * waiting for over 18 hours to start the scan is a bit silly
1376 * and to keep it aligned with UMAC scans (which only support
1377 * 16-bit delays), trim it down to 16-bits.
1378 */
1379 if (req->delay > U16_MAX) {
1380 IWL_DEBUG_SCAN(mvm,
1381 "delay value is > 16-bits, set to max possible\n");
1382 params.delay = U16_MAX;
1383 } else {
1384 params.delay = req->delay;
1385 }
1386
65ff556b
LC		 1387 ret = iwl_mvm_config_sched_scan_profiles(mvm, req);
1388 if (ret)
1389 return ret;
1390
45d1b12e
LC		 1391 iwl_mvm_build_scan_probe(mvm, vif, ies, &params);
1392
859d914c 1393 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
88742c9e 1394 hcmd.id = iwl_cmd_id(SCAN_REQ_UMAC, IWL_ALWAYS_LONG_GROUP, 0);
23ae6128 1395 ret = iwl_mvm_scan_umac(mvm, vif, &params, type);
65ff556b 1396 } else {
8df3e68f 1397 hcmd.id = SCAN_OFFLOAD_REQUEST_CMD;
7d7de1e9 1398 ret = iwl_mvm_scan_lmac(mvm, vif, &params);
8df3e68f
LC		 1399 }
1400
1401 if (ret)
1402 return ret;
1403
1404 ret = iwl_mvm_send_cmd(mvm, &hcmd);
1405 if (!ret) {
1406 IWL_DEBUG_SCAN(mvm,
1407 "Sched scan request was sent successfully\n");
1408 mvm->scan_status |= type;
1409 } else {
1410 /* If the scan failed, it usually means that the FW was unable
1411 * to allocate the time events. Warn on it, but maybe we
1412 * should try to send the command again with different params.
1413 */
1414 IWL_ERR(mvm, "Sched scan failed! ret %d\n", ret);
65ff556b
LC		 1415 }
1416
1417 return ret;
1418}
1419
0416841d
JB		 1420void iwl_mvm_rx_umac_scan_complete_notif(struct iwl_mvm *mvm,
1421 struct iwl_rx_cmd_buffer *rxb)
d2496221
DS		 1422{
1423 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1424 struct iwl_umac_scan_complete *notif = (void *)pkt->data;
1425 u32 uid = __le32_to_cpu(notif->uid);
8d14ccd8 1426 bool aborted = (notif->status == IWL_SCAN_OFFLOAD_ABORTED);
d2496221 1427
8d14ccd8 1428 if (WARN_ON(!(mvm->scan_uid_status[uid] & mvm->scan_status)))
0416841d 1429 return;
d2496221 1430
8d14ccd8
LC		 1431 /* if the scan is already stopping, we don't need to notify mac80211 */
1432 if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_REGULAR) {
1433 ieee80211_scan_completed(mvm->hw, aborted);
1434 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
728e825f 1435 del_timer(&mvm->scan_timer);
8d14ccd8
LC		 1436 } else if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_SCHED) {
1437 ieee80211_sched_scan_stopped(mvm->hw);
a339e918 1438 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
8d14ccd8
LC		 1439 }
1440
1441 mvm->scan_status &= ~mvm->scan_uid_status[uid];
d2496221 1442 IWL_DEBUG_SCAN(mvm,
a7b3bc91 1443 "Scan completed, uid %u type %u, status %s, EBS status %s\n",
8d14ccd8 1444 uid, mvm->scan_uid_status[uid],
d2496221
DS		 1445 notif->status == IWL_SCAN_OFFLOAD_COMPLETED ?
1446 "completed" : "aborted",
a7b3bc91
AB		 1447 iwl_mvm_ebs_status_str(notif->ebs_status));
1448 IWL_DEBUG_SCAN(mvm,
1449 "Last line %d, Last iteration %d, Time from last iteration %d\n",
1a84e771
AB		 1450 notif->last_schedule, notif->last_iter,
1451 __le32_to_cpu(notif->time_from_last_iter));
d2496221 1452
f0bf8593
DS		 1453 if (notif->ebs_status != IWL_SCAN_EBS_SUCCESS &&
1454 notif->ebs_status != IWL_SCAN_EBS_INACTIVE)
5a4b2afa
HD		 1455 mvm->last_ebs_successful = false;
1456
6185af2a 1457 mvm->scan_uid_status[uid] = 0;
d2496221
DS		 1458}
1459
0416841d
JB		 1460void iwl_mvm_rx_umac_scan_iter_complete_notif(struct iwl_mvm *mvm,
1461 struct iwl_rx_cmd_buffer *rxb)
ee9219b2
AS		 1462{
1463 struct iwl_rx_packet *pkt = rxb_addr(rxb);
1464 struct iwl_umac_scan_iter_complete_notif *notif = (void *)pkt->data;
1465 u8 buf[256];
1466
1467 IWL_DEBUG_SCAN(mvm,
1468 "UMAC Scan iteration complete: status=0x%x scanned_channels=%d channels list: %s\n",
1469 notif->status, notif->scanned_channels,
1470 iwl_mvm_dump_channel_list(notif->results,
1471 notif->scanned_channels, buf,
1472 sizeof(buf)));
a339e918
LC		 1473
1474 if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) {
1475 IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n");
1476 ieee80211_sched_scan_results(mvm->hw);
1477 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED;
1478 }
ee9219b2
AS		 1479}
1480
434f3c1b 1481static int iwl_mvm_umac_scan_abort(struct iwl_mvm *mvm, int type)
d2496221 1482{
88742c9e 1483 struct iwl_umac_scan_abort cmd = {};
434f3c1b 1484 int uid, ret;
d2496221
DS		 1485
1486 lockdep_assert_held(&mvm->mutex);
1487
434f3c1b
LC		 1488 /* We should always get a valid index here, because we already
1489 * checked that this type of scan was running in the generic
1490 * code.
1491 */
1492 uid = iwl_mvm_scan_uid_by_status(mvm, type);
1493 if (WARN_ON_ONCE(uid < 0))
1494 return uid;
1495
1496 cmd.uid = cpu_to_le32(uid);
1497
d2496221
DS		 1498 IWL_DEBUG_SCAN(mvm, "Sending scan abort, uid %u\n", uid);
1499
88742c9e
JB		 1500 ret = iwl_mvm_send_cmd_pdu(mvm,
1501 iwl_cmd_id(SCAN_ABORT_UMAC,
1502 IWL_ALWAYS_LONG_GROUP, 0),
1503 0, sizeof(cmd), &cmd);
434f3c1b 1504 if (!ret)
8d14ccd8 1505 mvm->scan_uid_status[uid] = type << IWL_MVM_SCAN_STOPPING_SHIFT;
434f3c1b
LC		 1506
1507 return ret;
d2496221
DS		 1508}
1509
f2461796 1510static int iwl_mvm_scan_stop_wait(struct iwl_mvm *mvm, int type)
d2496221
DS		 1511{
1512 struct iwl_notification_wait wait_scan_done;
6eb031d2 1513 static const u16 scan_done_notif[] = { SCAN_COMPLETE_UMAC,
f2461796 1514 SCAN_OFFLOAD_COMPLETE, };
434f3c1b 1515 int ret;
d2496221 1516
f2461796
LC		 1517 lockdep_assert_held(&mvm->mutex);
1518
d2496221
DS		 1519 iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_done,
1520 scan_done_notif,
1521 ARRAY_SIZE(scan_done_notif),
434f3c1b 1522 NULL, NULL);
d2496221
DS		 1523
1524 IWL_DEBUG_SCAN(mvm, "Preparing to stop scan, type %x\n", type);
1525
859d914c 1526 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
f2461796
LC		 1527 ret = iwl_mvm_umac_scan_abort(mvm, type);
1528 else
1529 ret = iwl_mvm_lmac_scan_abort(mvm);
1530
d2496221 1531 if (ret) {
434f3c1b 1532 IWL_DEBUG_SCAN(mvm, "couldn't stop scan type %d\n", type);
d2496221
DS		 1533 iwl_remove_notification(&mvm->notif_wait, &wait_scan_done);
1534 return ret;
1535 }
1536
1537 ret = iwl_wait_notification(&mvm->notif_wait, &wait_scan_done, 1 * HZ);
d2496221
DS		 1538
1539 return ret;
1540}
1541
1542int iwl_mvm_scan_size(struct iwl_mvm *mvm)
1543{
859d914c 1544 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
d2496221
DS		 1545 return sizeof(struct iwl_scan_req_umac) +
1546 sizeof(struct iwl_scan_channel_cfg_umac) *
1547 mvm->fw->ucode_capa.n_scan_channels +
1548 sizeof(struct iwl_scan_req_umac_tail);
1549
65ff556b 1550 return sizeof(struct iwl_scan_req_lmac) +
1f940386
LC		 1551 sizeof(struct iwl_scan_channel_cfg_lmac) *
1552 mvm->fw->ucode_capa.n_scan_channels +
1553 sizeof(struct iwl_scan_probe_req);
d2496221 1554}
4ffb3650
DS		 1555
1556/*
1557 * This function is used in nic restart flow, to inform mac80211 about scans
1558 * that was aborted by restart flow or by an assert.
1559 */
1560void iwl_mvm_report_scan_aborted(struct iwl_mvm *mvm)
1561{
859d914c 1562 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
6185af2a 1563 int uid, i;
963221be 1564
6185af2a
LC		 1565 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_REGULAR);
1566 if (uid >= 0) {
4ffb3650 1567 ieee80211_scan_completed(mvm->hw, true);
6185af2a 1568 mvm->scan_uid_status[uid] = 0;
963221be 1569 }
6185af2a
LC		 1570 uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_SCHED);
1571 if (uid >= 0 && !mvm->restart_fw) {
4ffb3650 1572 ieee80211_sched_scan_stopped(mvm->hw);
a339e918 1573 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
6185af2a 1574 mvm->scan_uid_status[uid] = 0;
963221be
AB		 1575 }
1576
1577 /* We shouldn't have any UIDs still set. Loop over all the
1578 * UIDs to make sure there's nothing left there and warn if
1579 * any is found.
1580 */
507e4cda 1581 for (i = 0; i < mvm->max_scans; i++) {
6185af2a
LC		 1582 if (WARN_ONCE(mvm->scan_uid_status[i],
1583 "UMAC scan UID %d status was not cleaned\n",
1584 i))
1585 mvm->scan_uid_status[i] = 0;
963221be 1586 }
4ffb3650 1587 } else {
9af91f46 1588 if (mvm->scan_status & IWL_MVM_SCAN_REGULAR)
4ffb3650 1589 ieee80211_scan_completed(mvm->hw, true);
9af91f46
LC		 1590
1591 /* Sched scan will be restarted by mac80211 in
1592 * restart_hw, so do not report if FW is about to be
1593 * restarted.
1594 */
a339e918
LC		 1595 if ((mvm->scan_status & IWL_MVM_SCAN_SCHED) &&
1596 !mvm->restart_fw) {
9af91f46 1597 ieee80211_sched_scan_stopped(mvm->hw);
a339e918
LC		 1598 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
1599 }
4ffb3650
DS		 1600 }
1601}
dfbf156d 1602
c7d42480 1603int iwl_mvm_scan_stop(struct iwl_mvm *mvm, int type, bool notify)
dfbf156d
LC		 1604{
1605 int ret;
1606
c7d42480 1607 if (!(mvm->scan_status & type))
dfbf156d
LC		 1608 return 0;
1609
1610 if (iwl_mvm_is_radio_killed(mvm)) {
1611 ret = 0;
1612 goto out;
1613 }
1614
c7d42480 1615 ret = iwl_mvm_scan_stop_wait(mvm, type);
dfbf156d 1616 if (!ret)
c7d42480 1617 mvm->scan_status |= type << IWL_MVM_SCAN_STOPPING_SHIFT;
dfbf156d
LC		 1618out:
1619 /* Clear the scan status so the next scan requests will
1620 * succeed and mark the scan as stopping, so that the Rx
1621 * handler doesn't do anything, as the scan was stopped from
c7d42480 1622 * above.
dfbf156d 1623 */
c7d42480 1624 mvm->scan_status &= ~type;
dfbf156d 1625
c7d42480
LC		 1626 if (type == IWL_MVM_SCAN_REGULAR) {
1627 /* Since the rx handler won't do anything now, we have
1628 * to release the scan reference here.
1629 */
1630 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
728e825f 1631 del_timer(&mvm->scan_timer);
c7d42480
LC		 1632 if (notify)
1633 ieee80211_scan_completed(mvm->hw, true);
1634 } else if (notify) {
dfbf156d 1635 ieee80211_sched_scan_stopped(mvm->hw);
a339e918 1636 mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
c7d42480 1637 }
dfbf156d
LC		 1638
1639 return ret;
1640}
Linux 6.x block layer and io_uring tree(s)