1// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
   2/*
   3 * Copyright (C) 2012-2014, 2018-2021 Intel Corporation
   4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
   5 * Copyright (C) 2016-2017 Intel Deutschland GmbH
   6 */
   7#include <linux/etherdevice.h>
   8#include <net/mac80211.h>
   9#include <linux/crc32.h>
  10
  11#include "mvm.h"
  12#include "fw/api/scan.h"
  13#include "iwl-io.h"
  14
  15#define IWL_DENSE_EBS_SCAN_RATIO 5
  16#define IWL_SPARSE_EBS_SCAN_RATIO 1
  17
  18#define IWL_SCAN_DWELL_ACTIVE		10
  19#define IWL_SCAN_DWELL_PASSIVE		110
  20#define IWL_SCAN_DWELL_FRAGMENTED	44
  21#define IWL_SCAN_DWELL_EXTENDED		90
  22#define IWL_SCAN_NUM_OF_FRAGS		3
  23
  24/* adaptive dwell max budget time [TU] for full scan */
  25#define IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN 300
  26/* adaptive dwell max budget time [TU] for directed scan */
  27#define IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN 100
  28/* adaptive dwell default high band APs number */
  29#define IWL_SCAN_ADWELL_DEFAULT_HB_N_APS 8
  30/* adaptive dwell default low band APs number */
  31#define IWL_SCAN_ADWELL_DEFAULT_LB_N_APS 2
  32/* adaptive dwell default APs number in social channels (1, 6, 11) */
  33#define IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL 10
  34/* number of scan channels */
  35#define IWL_SCAN_NUM_CHANNELS 112
  36/* adaptive dwell number of APs override mask for p2p friendly GO */
  37#define IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY_BIT BIT(20)
  38/* adaptive dwell number of APs override mask for social channels */
  39#define IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS_BIT BIT(21)
  40/* adaptive dwell number of APs override for p2p friendly GO channels */
  41#define IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY 10
  42/* adaptive dwell number of APs override for social channels */
  43#define IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS 2
  44
  45/* minimal number of 2GHz and 5GHz channels in the regular scan request */
  46#define IWL_MVM_6GHZ_PASSIVE_SCAN_MIN_CHANS 4
  47
  48struct iwl_mvm_scan_timing_params {
  49	u32 suspend_time;
  50	u32 max_out_time;
  51};
  52
  53static struct iwl_mvm_scan_timing_params scan_timing[] = {
  54	[IWL_SCAN_TYPE_UNASSOC] = {
  55		.suspend_time = 0,
  56		.max_out_time = 0,
  57	},
  58	[IWL_SCAN_TYPE_WILD] = {
  59		.suspend_time = 30,
  60		.max_out_time = 120,
  61	},
  62	[IWL_SCAN_TYPE_MILD] = {
  63		.suspend_time = 120,
  64		.max_out_time = 120,
  65	},
  66	[IWL_SCAN_TYPE_FRAGMENTED] = {
  67		.suspend_time = 95,
  68		.max_out_time = 44,
  69	},
  70	[IWL_SCAN_TYPE_FAST_BALANCE] = {
  71		.suspend_time = 30,
  72		.max_out_time = 37,
  73	},
  74};
  75
  76struct iwl_mvm_scan_params {
  77	/* For CDB this is low band scan type, for non-CDB - type. */
  78	enum iwl_mvm_scan_type type;
  79	enum iwl_mvm_scan_type hb_type;
  80	u32 n_channels;
  81	u16 delay;
  82	int n_ssids;
  83	struct cfg80211_ssid *ssids;
  84	struct ieee80211_channel **channels;
  85	u32 flags;
  86	u8 *mac_addr;
  87	u8 *mac_addr_mask;
  88	bool no_cck;
  89	bool pass_all;
  90	int n_match_sets;
  91	struct iwl_scan_probe_req preq;
  92	struct cfg80211_match_set *match_sets;
  93	int n_scan_plans;
  94	struct cfg80211_sched_scan_plan *scan_plans;
  95	bool iter_notif;
  96	struct cfg80211_scan_6ghz_params *scan_6ghz_params;
  97	u32 n_6ghz_params;
  98	bool scan_6ghz;
  99	bool enable_6ghz_passive;
 100	bool respect_p2p_go, respect_p2p_go_hb;
 101};
 102
 103static inline void *iwl_mvm_get_scan_req_umac_data(struct iwl_mvm *mvm)
 104{
 105	struct iwl_scan_req_umac *cmd = mvm->scan_cmd;
 106
 107	if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm))
 108		return (void *)&cmd->v8.data;
 109
 110	if (iwl_mvm_is_adaptive_dwell_supported(mvm))
 111		return (void *)&cmd->v7.data;
 112
 113	if (iwl_mvm_cdb_scan_api(mvm))
 114		return (void *)&cmd->v6.data;
 115
 116	return (void *)&cmd->v1.data;
 117}
 118
 119static inline struct iwl_scan_umac_chan_param *
 120iwl_mvm_get_scan_req_umac_channel(struct iwl_mvm *mvm)
 121{
 122	struct iwl_scan_req_umac *cmd = mvm->scan_cmd;
 123
 124	if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm))
 125		return &cmd->v8.channel;
 126
 127	if (iwl_mvm_is_adaptive_dwell_supported(mvm))
 128		return &cmd->v7.channel;
 129
 130	if (iwl_mvm_cdb_scan_api(mvm))
 131		return &cmd->v6.channel;
 132
 133	return &cmd->v1.channel;
 134}
 135
 136static u8 iwl_mvm_scan_rx_ant(struct iwl_mvm *mvm)
 137{
 138	if (mvm->scan_rx_ant != ANT_NONE)
 139		return mvm->scan_rx_ant;
 140	return iwl_mvm_get_valid_rx_ant(mvm);
 141}
 142
 143static inline __le16 iwl_mvm_scan_rx_chain(struct iwl_mvm *mvm)
 144{
 145	u16 rx_chain;
 146	u8 rx_ant;
 147
 148	rx_ant = iwl_mvm_scan_rx_ant(mvm);
 149	rx_chain = rx_ant << PHY_RX_CHAIN_VALID_POS;
 150	rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_MIMO_SEL_POS;
 151	rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_SEL_POS;
 152	rx_chain |= 0x1 << PHY_RX_CHAIN_DRIVER_FORCE_POS;
 153	return cpu_to_le16(rx_chain);
 154}
 155
 156static inline __le32
 157iwl_mvm_scan_rate_n_flags(struct iwl_mvm *mvm, enum nl80211_band band,
 158			  bool no_cck)
 159{
 160	u32 tx_ant;
 161
 162	iwl_mvm_toggle_tx_ant(mvm, &mvm->scan_last_antenna_idx);
 163	tx_ant = BIT(mvm->scan_last_antenna_idx) << RATE_MCS_ANT_POS;
 164
 165	if (band == NL80211_BAND_2GHZ && !no_cck)
 166		return cpu_to_le32(IWL_RATE_1M_PLCP | RATE_MCS_CCK_MSK_V1 |
 167				   tx_ant);
 168	else
 169		return cpu_to_le32(IWL_RATE_6M_PLCP | tx_ant);
 170}
 171
 172static enum iwl_mvm_traffic_load iwl_mvm_get_traffic_load(struct iwl_mvm *mvm)
 173{
 174	return mvm->tcm.result.global_load;
 175}
 176
 177static enum iwl_mvm_traffic_load
 178iwl_mvm_get_traffic_load_band(struct iwl_mvm *mvm, enum nl80211_band band)
 179{
 180	return mvm->tcm.result.band_load[band];
 181}
 182
 183struct iwl_mvm_scan_iter_data {
 184	u32 global_cnt;
 185	struct ieee80211_vif *current_vif;
 186	bool is_dcm_with_p2p_go;
 187};
 188
 189static void iwl_mvm_scan_iterator(void *_data, u8 *mac,
 190				  struct ieee80211_vif *vif)
 191{
 192	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 193	struct iwl_mvm_scan_iter_data *data = _data;
 194	struct iwl_mvm_vif *curr_mvmvif;
 195
 196	if (vif->type != NL80211_IFTYPE_P2P_DEVICE && mvmvif->phy_ctxt &&
 197	    mvmvif->phy_ctxt->id < NUM_PHY_CTX)
 198		data->global_cnt += 1;
 199
 200	if (!data->current_vif || vif == data->current_vif)
 201		return;
 202
 203	curr_mvmvif = iwl_mvm_vif_from_mac80211(data->current_vif);
 204
 205	if (vif->type == NL80211_IFTYPE_AP && vif->p2p &&
 206	    mvmvif->phy_ctxt && curr_mvmvif->phy_ctxt &&
 207	    mvmvif->phy_ctxt->id != curr_mvmvif->phy_ctxt->id)
 208		data->is_dcm_with_p2p_go = true;
 209}
 210
 211static enum
 212iwl_mvm_scan_type _iwl_mvm_get_scan_type(struct iwl_mvm *mvm,
 213					 struct ieee80211_vif *vif,
 214					 enum iwl_mvm_traffic_load load,
 215					 bool low_latency)
 216{
 217	struct iwl_mvm_scan_iter_data data = {
 218		.current_vif = vif,
 219		.is_dcm_with_p2p_go = false,
 220		.global_cnt = 0,
 221	};
 222
 223	ieee80211_iterate_active_interfaces_atomic(mvm->hw,
 224						   IEEE80211_IFACE_ITER_NORMAL,
 225						   iwl_mvm_scan_iterator,
 226						   &data);
 227
 228	if (!data.global_cnt)
 229		return IWL_SCAN_TYPE_UNASSOC;
 230
 231	if (fw_has_api(&mvm->fw->ucode_capa,
 232		       IWL_UCODE_TLV_API_FRAGMENTED_SCAN)) {
 233		if ((load == IWL_MVM_TRAFFIC_HIGH || low_latency) &&
 234		    (!vif || vif->type != NL80211_IFTYPE_P2P_DEVICE))
 235			return IWL_SCAN_TYPE_FRAGMENTED;
 236
 237		/*
 238		 * in case of DCM with GO where BSS DTIM interval < 220msec
 239		 * set all scan requests as fast-balance scan
 240		 */
 241		if (vif && vif->type == NL80211_IFTYPE_STATION &&
 242		    vif->bss_conf.dtim_period < 220 &&
 243		    data.is_dcm_with_p2p_go)
 244			return IWL_SCAN_TYPE_FAST_BALANCE;
 245	}
 246
 247	if (load >= IWL_MVM_TRAFFIC_MEDIUM || low_latency)
 248		return IWL_SCAN_TYPE_MILD;
 249
 250	return IWL_SCAN_TYPE_WILD;
 251}
 252
 253static enum
 254iwl_mvm_scan_type iwl_mvm_get_scan_type(struct iwl_mvm *mvm,
 255					struct ieee80211_vif *vif)
 256{
 257	enum iwl_mvm_traffic_load load;
 258	bool low_latency;
 259
 260	load = iwl_mvm_get_traffic_load(mvm);
 261	low_latency = iwl_mvm_low_latency(mvm);
 262
 263	return _iwl_mvm_get_scan_type(mvm, vif, load, low_latency);
 264}
 265
 266static enum
 267iwl_mvm_scan_type iwl_mvm_get_scan_type_band(struct iwl_mvm *mvm,
 268					     struct ieee80211_vif *vif,
 269					     enum nl80211_band band)
 270{
 271	enum iwl_mvm_traffic_load load;
 272	bool low_latency;
 273
 274	load = iwl_mvm_get_traffic_load_band(mvm, band);
 275	low_latency = iwl_mvm_low_latency_band(mvm, band);
 276
 277	return _iwl_mvm_get_scan_type(mvm, vif, load, low_latency);
 278}
 279
 280static inline bool iwl_mvm_rrm_scan_needed(struct iwl_mvm *mvm)
 281{
 282	/* require rrm scan whenever the fw supports it */
 283	return fw_has_capa(&mvm->fw->ucode_capa,
 284			   IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT);
 285}
 286
 287static int iwl_mvm_max_scan_ie_fw_cmd_room(struct iwl_mvm *mvm)
 288{
 289	int max_probe_len;
 290
 291	max_probe_len = SCAN_OFFLOAD_PROBE_REQ_SIZE;
 292
 293	/* we create the 802.11 header and SSID element */
 294	max_probe_len -= 24 + 2;
 295
 296	/* DS parameter set element is added on 2.4GHZ band if required */
 297	if (iwl_mvm_rrm_scan_needed(mvm))
 298		max_probe_len -= 3;
 299
 300	return max_probe_len;
 301}
 302
 303int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm)
 304{
 305	int max_ie_len = iwl_mvm_max_scan_ie_fw_cmd_room(mvm);
 306
 307	/* TODO: [BUG] This function should return the maximum allowed size of
 308	 * scan IEs, however the LMAC scan api contains both 2GHZ and 5GHZ IEs
 309	 * in the same command. So the correct implementation of this function
 310	 * is just iwl_mvm_max_scan_ie_fw_cmd_room() / 2. Currently the scan
 311	 * command has only 512 bytes and it would leave us with about 240
 312	 * bytes for scan IEs, which is clearly not enough. So meanwhile
 313	 * we will report an incorrect value. This may result in a failure to
 314	 * issue a scan in unified_scan_lmac and unified_sched_scan_lmac
 315	 * functions with -ENOBUFS, if a large enough probe will be provided.
 316	 */
 317	return max_ie_len;
 318}
 319
 320void iwl_mvm_rx_lmac_scan_iter_complete_notif(struct iwl_mvm *mvm,
 321					      struct iwl_rx_cmd_buffer *rxb)
 322{
 323	struct iwl_rx_packet *pkt = rxb_addr(rxb);
 324	struct iwl_lmac_scan_complete_notif *notif = (void *)pkt->data;
 325
 326	IWL_DEBUG_SCAN(mvm,
 327		       "Scan offload iteration complete: status=0x%x scanned channels=%d\n",
 328		       notif->status, notif->scanned_channels);
 329
 330	if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) {
 331		IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n");
 332		ieee80211_sched_scan_results(mvm->hw);
 333		mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED;
 334	}
 335}
 336
 337void iwl_mvm_rx_scan_match_found(struct iwl_mvm *mvm,
 338				 struct iwl_rx_cmd_buffer *rxb)
 339{
 340	IWL_DEBUG_SCAN(mvm, "Scheduled scan results\n");
 341	ieee80211_sched_scan_results(mvm->hw);
 342}
 343
 344static const char *iwl_mvm_ebs_status_str(enum iwl_scan_ebs_status status)
 345{
 346	switch (status) {
 347	case IWL_SCAN_EBS_SUCCESS:
 348		return "successful";
 349	case IWL_SCAN_EBS_INACTIVE:
 350		return "inactive";
 351	case IWL_SCAN_EBS_FAILED:
 352	case IWL_SCAN_EBS_CHAN_NOT_FOUND:
 353	default:
 354		return "failed";
 355	}
 356}
 357
 358void iwl_mvm_rx_lmac_scan_complete_notif(struct iwl_mvm *mvm,
 359					 struct iwl_rx_cmd_buffer *rxb)
 360{
 361	struct iwl_rx_packet *pkt = rxb_addr(rxb);
 362	struct iwl_periodic_scan_complete *scan_notif = (void *)pkt->data;
 363	bool aborted = (scan_notif->status == IWL_SCAN_OFFLOAD_ABORTED);
 364
 365	/* If this happens, the firmware has mistakenly sent an LMAC
 366	 * notification during UMAC scans -- warn and ignore it.
 367	 */
 368	if (WARN_ON_ONCE(fw_has_capa(&mvm->fw->ucode_capa,
 369				     IWL_UCODE_TLV_CAPA_UMAC_SCAN)))
 370		return;
 371
 372	/* scan status must be locked for proper checking */
 373	lockdep_assert_held(&mvm->mutex);
 374
 375	/* We first check if we were stopping a scan, in which case we
 376	 * just clear the stopping flag.  Then we check if it was a
 377	 * firmware initiated stop, in which case we need to inform
 378	 * mac80211.
 379	 * Note that we can have a stopping and a running scan
 380	 * simultaneously, but we can't have two different types of
 381	 * scans stopping or running at the same time (since LMAC
 382	 * doesn't support it).
 383	 */
 384
 385	if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_SCHED) {
 386		WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR);
 387
 388		IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n",
 389			       aborted ? "aborted" : "completed",
 390			       iwl_mvm_ebs_status_str(scan_notif->ebs_status));
 391		IWL_DEBUG_SCAN(mvm,
 392			       "Last line %d, Last iteration %d, Time after last iteration %d\n",
 393			       scan_notif->last_schedule_line,
 394			       scan_notif->last_schedule_iteration,
 395			       __le32_to_cpu(scan_notif->time_after_last_iter));
 396
 397		mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_SCHED;
 398	} else if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR) {
 399		IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s\n",
 400			       aborted ? "aborted" : "completed",
 401			       iwl_mvm_ebs_status_str(scan_notif->ebs_status));
 402
 403		mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_REGULAR;
 404	} else if (mvm->scan_status & IWL_MVM_SCAN_SCHED) {
 405		WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_REGULAR);
 406
 407		IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n",
 408			       aborted ? "aborted" : "completed",
 409			       iwl_mvm_ebs_status_str(scan_notif->ebs_status));
 410		IWL_DEBUG_SCAN(mvm,
 411			       "Last line %d, Last iteration %d, Time after last iteration %d (FW)\n",
 412			       scan_notif->last_schedule_line,
 413			       scan_notif->last_schedule_iteration,
 414			       __le32_to_cpu(scan_notif->time_after_last_iter));
 415
 416		mvm->scan_status &= ~IWL_MVM_SCAN_SCHED;
 417		ieee80211_sched_scan_stopped(mvm->hw);
 418		mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
 419	} else if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) {
 420		struct cfg80211_scan_info info = {
 421			.aborted = aborted,
 422		};
 423
 424		IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s (FW)\n",
 425			       aborted ? "aborted" : "completed",
 426			       iwl_mvm_ebs_status_str(scan_notif->ebs_status));
 427
 428		mvm->scan_status &= ~IWL_MVM_SCAN_REGULAR;
 429		ieee80211_scan_completed(mvm->hw, &info);
 430		cancel_delayed_work(&mvm->scan_timeout_dwork);
 431		iwl_mvm_resume_tcm(mvm);
 432	} else {
 433		IWL_ERR(mvm,
 434			"got scan complete notification but no scan is running\n");
 435	}
 436
 437	mvm->last_ebs_successful =
 438			scan_notif->ebs_status == IWL_SCAN_EBS_SUCCESS ||
 439			scan_notif->ebs_status == IWL_SCAN_EBS_INACTIVE;
 440}
 441
 442static int iwl_ssid_exist(u8 *ssid, u8 ssid_len, struct iwl_ssid_ie *ssid_list)
 443{
 444	int i;
 445
 446	for (i = 0; i < PROBE_OPTION_MAX; i++) {
 447		if (!ssid_list[i].len)
 448			break;
 449		if (ssid_list[i].len == ssid_len &&
 450		    !memcmp(ssid_list->ssid, ssid, ssid_len))
 451			return i;
 452	}
 453	return -1;
 454}
 455
 456/* We insert the SSIDs in an inverted order, because the FW will
 457 * invert it back.
 458 */
 459static void iwl_scan_build_ssids(struct iwl_mvm_scan_params *params,
 460				 struct iwl_ssid_ie *ssids,
 461				 u32 *ssid_bitmap)
 462{
 463	int i, j;
 464	int index;
 465	u32 tmp_bitmap = 0;
 466
 467	/*
 468	 * copy SSIDs from match list.
 469	 * iwl_config_sched_scan_profiles() uses the order of these ssids to
 470	 * config match list.
 471	 */
 472	for (i = 0, j = params->n_match_sets - 1;
 473	     j >= 0 && i < PROBE_OPTION_MAX;
 474	     i++, j--) {
 475		/* skip empty SSID matchsets */
 476		if (!params->match_sets[j].ssid.ssid_len)
 477			continue;
 478		ssids[i].id = WLAN_EID_SSID;
 479		ssids[i].len = params->match_sets[j].ssid.ssid_len;
 480		memcpy(ssids[i].ssid, params->match_sets[j].ssid.ssid,
 481		       ssids[i].len);
 482	}
 483
 484	/* add SSIDs from scan SSID list */
 485	for (j = params->n_ssids - 1;
 486	     j >= 0 && i < PROBE_OPTION_MAX;
 487	     i++, j--) {
 488		index = iwl_ssid_exist(params->ssids[j].ssid,
 489				       params->ssids[j].ssid_len,
 490				       ssids);
 491		if (index < 0) {
 492			ssids[i].id = WLAN_EID_SSID;
 493			ssids[i].len = params->ssids[j].ssid_len;
 494			memcpy(ssids[i].ssid, params->ssids[j].ssid,
 495			       ssids[i].len);
 496			tmp_bitmap |= BIT(i);
 497		} else {
 498			tmp_bitmap |= BIT(index);
 499		}
 500	}
 501	if (ssid_bitmap)
 502		*ssid_bitmap = tmp_bitmap;
 503}
 504
 505static int
 506iwl_mvm_config_sched_scan_profiles(struct iwl_mvm *mvm,
 507				   struct cfg80211_sched_scan_request *req)
 508{
 509	struct iwl_scan_offload_profile *profile;
 510	struct iwl_scan_offload_profile_cfg_v1 *profile_cfg_v1;
 511	struct iwl_scan_offload_blocklist *blocklist;
 512	struct iwl_scan_offload_profile_cfg_data *data;
 513	int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw);
 514	int profile_cfg_size = sizeof(*data) +
 515		sizeof(*profile) * max_profiles;
 516	struct iwl_host_cmd cmd = {
 517		.id = SCAN_OFFLOAD_UPDATE_PROFILES_CMD,
 518		.len[1] = profile_cfg_size,
 519		.dataflags[0] = IWL_HCMD_DFL_NOCOPY,
 520		.dataflags[1] = IWL_HCMD_DFL_NOCOPY,
 521	};
 522	int blocklist_len;
 523	int i;
 524	int ret;
 525
 526	if (WARN_ON(req->n_match_sets > max_profiles))
 527		return -EIO;
 528
 529	if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SHORT_BL)
 530		blocklist_len = IWL_SCAN_SHORT_BLACKLIST_LEN;
 531	else
 532		blocklist_len = IWL_SCAN_MAX_BLACKLIST_LEN;
 533
 534	blocklist = kcalloc(blocklist_len, sizeof(*blocklist), GFP_KERNEL);
 535	if (!blocklist)
 536		return -ENOMEM;
 537
 538	profile_cfg_v1 = kzalloc(profile_cfg_size, GFP_KERNEL);
 539	if (!profile_cfg_v1) {
 540		ret = -ENOMEM;
 541		goto free_blocklist;
 542	}
 543
 544	cmd.data[0] = blocklist;
 545	cmd.len[0] = sizeof(*blocklist) * blocklist_len;
 546	cmd.data[1] = profile_cfg_v1;
 547
 548	/* if max_profile is MAX_PROFILES_V2, we have the new API */
 549	if (max_profiles == IWL_SCAN_MAX_PROFILES_V2) {
 550		struct iwl_scan_offload_profile_cfg *profile_cfg =
 551			(struct iwl_scan_offload_profile_cfg *)profile_cfg_v1;
 552
 553		data = &profile_cfg->data;
 554	} else {
 555		data = &profile_cfg_v1->data;
 556	}
 557
 558	/* No blocklist configuration */
 559	data->num_profiles = req->n_match_sets;
 560	data->active_clients = SCAN_CLIENT_SCHED_SCAN;
 561	data->pass_match = SCAN_CLIENT_SCHED_SCAN;
 562	data->match_notify = SCAN_CLIENT_SCHED_SCAN;
 563
 564	if (!req->n_match_sets || !req->match_sets[0].ssid.ssid_len)
 565		data->any_beacon_notify = SCAN_CLIENT_SCHED_SCAN;
 566
 567	for (i = 0; i < req->n_match_sets; i++) {
 568		profile = &profile_cfg_v1->profiles[i];
 569		profile->ssid_index = i;
 570		/* Support any cipher and auth algorithm */
 571		profile->unicast_cipher = 0xff;
 572		profile->auth_alg = IWL_AUTH_ALGO_UNSUPPORTED |
 573			IWL_AUTH_ALGO_NONE | IWL_AUTH_ALGO_PSK | IWL_AUTH_ALGO_8021X |
 574			IWL_AUTH_ALGO_SAE | IWL_AUTH_ALGO_8021X_SHA384 | IWL_AUTH_ALGO_OWE;
 575		profile->network_type = IWL_NETWORK_TYPE_ANY;
 576		profile->band_selection = IWL_SCAN_OFFLOAD_SELECT_ANY;
 577		profile->client_bitmap = SCAN_CLIENT_SCHED_SCAN;
 578	}
 579
 580	IWL_DEBUG_SCAN(mvm, "Sending scheduled scan profile config\n");
 581
 582	ret = iwl_mvm_send_cmd(mvm, &cmd);
 583	kfree(profile_cfg_v1);
 584free_blocklist:
 585	kfree(blocklist);
 586
 587	return ret;
 588}
 589
 590static bool iwl_mvm_scan_pass_all(struct iwl_mvm *mvm,
 591				  struct cfg80211_sched_scan_request *req)
 592{
 593	if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) {
 594		IWL_DEBUG_SCAN(mvm,
 595			       "Sending scheduled scan with filtering, n_match_sets %d\n",
 596			       req->n_match_sets);
 597		mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
 598		return false;
 599	}
 600
 601	IWL_DEBUG_SCAN(mvm, "Sending Scheduled scan without filtering\n");
 602
 603	mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED;
 604	return true;
 605}
 606
 607static int iwl_mvm_lmac_scan_abort(struct iwl_mvm *mvm)
 608{
 609	int ret;
 610	struct iwl_host_cmd cmd = {
 611		.id = SCAN_OFFLOAD_ABORT_CMD,
 612	};
 613	u32 status = CAN_ABORT_STATUS;
 614
 615	ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status);
 616	if (ret)
 617		return ret;
 618
 619	if (status != CAN_ABORT_STATUS) {
 620		/*
 621		 * The scan abort will return 1 for success or
 622		 * 2 for "failure".  A failure condition can be
 623		 * due to simply not being in an active scan which
 624		 * can occur if we send the scan abort before the
 625		 * microcode has notified us that a scan is completed.
 626		 */
 627		IWL_DEBUG_SCAN(mvm, "SCAN OFFLOAD ABORT ret %d.\n", status);
 628		ret = -ENOENT;
 629	}
 630
 631	return ret;
 632}
 633
 634static void iwl_mvm_scan_fill_tx_cmd(struct iwl_mvm *mvm,
 635				     struct iwl_scan_req_tx_cmd *tx_cmd,
 636				     bool no_cck)
 637{
 638	tx_cmd[0].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL |
 639					 TX_CMD_FLG_BT_DIS);
 640	tx_cmd[0].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm,
 641							   NL80211_BAND_2GHZ,
 642							   no_cck);
 643
 644	if (iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA, 0) < 12) {
 645		tx_cmd[0].sta_id = mvm->aux_sta.sta_id;
 646		tx_cmd[1].sta_id = mvm->aux_sta.sta_id;
 647
 648	/*
 649	 * Fw doesn't use this sta anymore, pending deprecation via HOST API
 650	 * change
 651	 */
 652	} else {
 653		tx_cmd[0].sta_id = 0xff;
 654		tx_cmd[1].sta_id = 0xff;
 655	}
 656
 657	tx_cmd[1].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL |
 658					 TX_CMD_FLG_BT_DIS);
 659
 660	tx_cmd[1].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm,
 661							   NL80211_BAND_5GHZ,
 662							   no_cck);
 663}
 664
 665static void
 666iwl_mvm_lmac_scan_cfg_channels(struct iwl_mvm *mvm,
 667			       struct ieee80211_channel **channels,
 668			       int n_channels, u32 ssid_bitmap,
 669			       struct iwl_scan_req_lmac *cmd)
 670{
 671	struct iwl_scan_channel_cfg_lmac *channel_cfg = (void *)&cmd->data;
 672	int i;
 673
 674	for (i = 0; i < n_channels; i++) {
 675		channel_cfg[i].channel_num =
 676			cpu_to_le16(channels[i]->hw_value);
 677		channel_cfg[i].iter_count = cpu_to_le16(1);
 678		channel_cfg[i].iter_interval = 0;
 679		channel_cfg[i].flags =
 680			cpu_to_le32(IWL_UNIFIED_SCAN_CHANNEL_PARTIAL |
 681				    ssid_bitmap);
 682	}
 683}
 684
 685static u8 *iwl_mvm_copy_and_insert_ds_elem(struct iwl_mvm *mvm, const u8 *ies,
 686					   size_t len, u8 *const pos)
 687{
 688	static const u8 before_ds_params[] = {
 689			WLAN_EID_SSID,
 690			WLAN_EID_SUPP_RATES,
 691			WLAN_EID_REQUEST,
 692			WLAN_EID_EXT_SUPP_RATES,
 693	};
 694	size_t offs;
 695	u8 *newpos = pos;
 696
 697	if (!iwl_mvm_rrm_scan_needed(mvm)) {
 698		memcpy(newpos, ies, len);
 699		return newpos + len;
 700	}
 701
 702	offs = ieee80211_ie_split(ies, len,
 703				  before_ds_params,
 704				  ARRAY_SIZE(before_ds_params),
 705				  0);
 706
 707	memcpy(newpos, ies, offs);
 708	newpos += offs;
 709
 710	/* Add a placeholder for DS Parameter Set element */
 711	*newpos++ = WLAN_EID_DS_PARAMS;
 712	*newpos++ = 1;
 713	*newpos++ = 0;
 714
 715	memcpy(newpos, ies + offs, len - offs);
 716	newpos += len - offs;
 717
 718	return newpos;
 719}
 720
 721#define WFA_TPC_IE_LEN	9
 722
 723static void iwl_mvm_add_tpc_report_ie(u8 *pos)
 724{
 725	pos[0] = WLAN_EID_VENDOR_SPECIFIC;
 726	pos[1] = WFA_TPC_IE_LEN - 2;
 727	pos[2] = (WLAN_OUI_MICROSOFT >> 16) & 0xff;
 728	pos[3] = (WLAN_OUI_MICROSOFT >> 8) & 0xff;
 729	pos[4] = WLAN_OUI_MICROSOFT & 0xff;
 730	pos[5] = WLAN_OUI_TYPE_MICROSOFT_TPC;
 731	pos[6] = 0;
 732	/* pos[7] - tx power will be inserted by the FW */
 733	pos[7] = 0;
 734	pos[8] = 0;
 735}
 736
 737static void
 738iwl_mvm_build_scan_probe(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 739			 struct ieee80211_scan_ies *ies,
 740			 struct iwl_mvm_scan_params *params)
 741{
 742	struct ieee80211_mgmt *frame = (void *)params->preq.buf;
 743	u8 *pos, *newpos;
 744	const u8 *mac_addr = params->flags & NL80211_SCAN_FLAG_RANDOM_ADDR ?
 745		params->mac_addr : NULL;
 746
 747	/*
 748	 * Unfortunately, right now the offload scan doesn't support randomising
 749	 * within the firmware, so until the firmware API is ready we implement
 750	 * it in the driver. This means that the scan iterations won't really be
 751	 * random, only when it's restarted, but at least that helps a bit.
 752	 */
 753	if (mac_addr)
 754		get_random_mask_addr(frame->sa, mac_addr,
 755				     params->mac_addr_mask);
 756	else
 757		memcpy(frame->sa, vif->addr, ETH_ALEN);
 758
 759	frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
 760	eth_broadcast_addr(frame->da);
 761	eth_broadcast_addr(frame->bssid);
 762	frame->seq_ctrl = 0;
 763
 764	pos = frame->u.probe_req.variable;
 765	*pos++ = WLAN_EID_SSID;
 766	*pos++ = 0;
 767
 768	params->preq.mac_header.offset = 0;
 769	params->preq.mac_header.len = cpu_to_le16(24 + 2);
 770
 771	/* Insert ds parameter set element on 2.4 GHz band */
 772	newpos = iwl_mvm_copy_and_insert_ds_elem(mvm,
 773						 ies->ies[NL80211_BAND_2GHZ],
 774						 ies->len[NL80211_BAND_2GHZ],
 775						 pos);
 776	params->preq.band_data[0].offset = cpu_to_le16(pos - params->preq.buf);
 777	params->preq.band_data[0].len = cpu_to_le16(newpos - pos);
 778	pos = newpos;
 779
 780	memcpy(pos, ies->ies[NL80211_BAND_5GHZ],
 781	       ies->len[NL80211_BAND_5GHZ]);
 782	params->preq.band_data[1].offset = cpu_to_le16(pos - params->preq.buf);
 783	params->preq.band_data[1].len =
 784		cpu_to_le16(ies->len[NL80211_BAND_5GHZ]);
 785	pos += ies->len[NL80211_BAND_5GHZ];
 786
 787	memcpy(pos, ies->ies[NL80211_BAND_6GHZ],
 788	       ies->len[NL80211_BAND_6GHZ]);
 789	params->preq.band_data[2].offset = cpu_to_le16(pos - params->preq.buf);
 790	params->preq.band_data[2].len =
 791		cpu_to_le16(ies->len[NL80211_BAND_6GHZ]);
 792	pos += ies->len[NL80211_BAND_6GHZ];
 793	memcpy(pos, ies->common_ies, ies->common_ie_len);
 794	params->preq.common_data.offset = cpu_to_le16(pos - params->preq.buf);
 795
 796	if (iwl_mvm_rrm_scan_needed(mvm) &&
 797	    !fw_has_capa(&mvm->fw->ucode_capa,
 798			 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) {
 799		iwl_mvm_add_tpc_report_ie(pos + ies->common_ie_len);
 800		params->preq.common_data.len = cpu_to_le16(ies->common_ie_len +
 801							   WFA_TPC_IE_LEN);
 802	} else {
 803		params->preq.common_data.len = cpu_to_le16(ies->common_ie_len);
 804	}
 805}
 806
 807static void iwl_mvm_scan_lmac_dwell(struct iwl_mvm *mvm,
 808				    struct iwl_scan_req_lmac *cmd,
 809				    struct iwl_mvm_scan_params *params)
 810{
 811	cmd->active_dwell = IWL_SCAN_DWELL_ACTIVE;
 812	cmd->passive_dwell = IWL_SCAN_DWELL_PASSIVE;
 813	cmd->fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED;
 814	cmd->extended_dwell = IWL_SCAN_DWELL_EXTENDED;
 815	cmd->max_out_time = cpu_to_le32(scan_timing[params->type].max_out_time);
 816	cmd->suspend_time = cpu_to_le32(scan_timing[params->type].suspend_time);
 817	cmd->scan_prio = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
 818}
 819
 820static inline bool iwl_mvm_scan_fits(struct iwl_mvm *mvm, int n_ssids,
 821				     struct ieee80211_scan_ies *ies,
 822				     int n_channels)
 823{
 824	return ((n_ssids <= PROBE_OPTION_MAX) &&
 825		(n_channels <= mvm->fw->ucode_capa.n_scan_channels) &
 826		(ies->common_ie_len +
 827		 ies->len[NL80211_BAND_2GHZ] +
 828		 ies->len[NL80211_BAND_5GHZ] <=
 829		 iwl_mvm_max_scan_ie_fw_cmd_room(mvm)));
 830}
 831
 832static inline bool iwl_mvm_scan_use_ebs(struct iwl_mvm *mvm,
 833					struct ieee80211_vif *vif)
 834{
 835	const struct iwl_ucode_capabilities *capa = &mvm->fw->ucode_capa;
 836	bool low_latency;
 837
 838	if (iwl_mvm_is_cdb_supported(mvm))
 839		low_latency = iwl_mvm_low_latency_band(mvm, NL80211_BAND_5GHZ);
 840	else
 841		low_latency = iwl_mvm_low_latency(mvm);
 842
 843	/* We can only use EBS if:
 844	 *	1. the feature is supported;
 845	 *	2. the last EBS was successful;
 846	 *	3. if only single scan, the single scan EBS API is supported;
 847	 *	4. it's not a p2p find operation.
 848	 *	5. we are not in low latency mode,
 849	 *	   or if fragmented ebs is supported by the FW
 850	 */
 851	return ((capa->flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT) &&
 852		mvm->last_ebs_successful && IWL_MVM_ENABLE_EBS &&
 853		vif->type != NL80211_IFTYPE_P2P_DEVICE &&
 854		(!low_latency || iwl_mvm_is_frag_ebs_supported(mvm)));
 855}
 856
 857static inline bool iwl_mvm_is_regular_scan(struct iwl_mvm_scan_params *params)
 858{
 859	return params->n_scan_plans == 1 &&
 860		params->scan_plans[0].iterations == 1;
 861}
 862
 863static bool iwl_mvm_is_scan_fragmented(enum iwl_mvm_scan_type type)
 864{
 865	return (type == IWL_SCAN_TYPE_FRAGMENTED ||
 866		type == IWL_SCAN_TYPE_FAST_BALANCE);
 867}
 868
 869static int iwl_mvm_scan_lmac_flags(struct iwl_mvm *mvm,
 870				   struct iwl_mvm_scan_params *params,
 871				   struct ieee80211_vif *vif)
 872{
 873	int flags = 0;
 874
 875	if (params->n_ssids == 0)
 876		flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE;
 877
 878	if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0)
 879		flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION;
 880
 881	if (iwl_mvm_is_scan_fragmented(params->type))
 882		flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED;
 883
 884	if (iwl_mvm_rrm_scan_needed(mvm) &&
 885	    fw_has_capa(&mvm->fw->ucode_capa,
 886			IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
 887		flags |= IWL_MVM_LMAC_SCAN_FLAGS_RRM_ENABLED;
 888
 889	if (params->pass_all)
 890		flags |= IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL;
 891	else
 892		flags |= IWL_MVM_LMAC_SCAN_FLAG_MATCH;
 893
 894#ifdef CONFIG_IWLWIFI_DEBUGFS
 895	if (mvm->scan_iter_notif_enabled)
 896		flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE;
 897#endif
 898
 899	if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED)
 900		flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE;
 901
 902	if (iwl_mvm_is_regular_scan(params) &&
 903	    vif->type != NL80211_IFTYPE_P2P_DEVICE &&
 904	    !iwl_mvm_is_scan_fragmented(params->type))
 905		flags |= IWL_MVM_LMAC_SCAN_FLAG_EXTENDED_DWELL;
 906
 907	return flags;
 908}
 909
 910static void
 911iwl_mvm_scan_set_legacy_probe_req(struct iwl_scan_probe_req_v1 *p_req,
 912				  struct iwl_scan_probe_req *src_p_req)
 913{
 914	int i;
 915
 916	p_req->mac_header = src_p_req->mac_header;
 917	for (i = 0; i < SCAN_NUM_BAND_PROBE_DATA_V_1; i++)
 918		p_req->band_data[i] = src_p_req->band_data[i];
 919	p_req->common_data = src_p_req->common_data;
 920	memcpy(p_req->buf, src_p_req->buf, sizeof(p_req->buf));
 921}
 922
 923static int iwl_mvm_scan_lmac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 924			     struct iwl_mvm_scan_params *params)
 925{
 926	struct iwl_scan_req_lmac *cmd = mvm->scan_cmd;
 927	struct iwl_scan_probe_req_v1 *preq =
 928		(void *)(cmd->data + sizeof(struct iwl_scan_channel_cfg_lmac) *
 929			 mvm->fw->ucode_capa.n_scan_channels);
 930	u32 ssid_bitmap = 0;
 931	int i;
 932	u8 band;
 933
 934	if (WARN_ON(params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS))
 935		return -EINVAL;
 936
 937	iwl_mvm_scan_lmac_dwell(mvm, cmd, params);
 938
 939	cmd->rx_chain_select = iwl_mvm_scan_rx_chain(mvm);
 940	cmd->iter_num = cpu_to_le32(1);
 941	cmd->n_channels = (u8)params->n_channels;
 942
 943	cmd->delay = cpu_to_le32(params->delay);
 944
 945	cmd->scan_flags = cpu_to_le32(iwl_mvm_scan_lmac_flags(mvm, params,
 946							      vif));
 947
 948	band = iwl_mvm_phy_band_from_nl80211(params->channels[0]->band);
 949	cmd->flags = cpu_to_le32(band);
 950	cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP |
 951					MAC_FILTER_IN_BEACON);
 952	iwl_mvm_scan_fill_tx_cmd(mvm, cmd->tx_cmd, params->no_cck);
 953	iwl_scan_build_ssids(params, cmd->direct_scan, &ssid_bitmap);
 954
 955	/* this API uses bits 1-20 instead of 0-19 */
 956	ssid_bitmap <<= 1;
 957
 958	for (i = 0; i < params->n_scan_plans; i++) {
 959		struct cfg80211_sched_scan_plan *scan_plan =
 960			&params->scan_plans[i];
 961
 962		cmd->schedule[i].delay =
 963			cpu_to_le16(scan_plan->interval);
 964		cmd->schedule[i].iterations = scan_plan->iterations;
 965		cmd->schedule[i].full_scan_mul = 1;
 966	}
 967
 968	/*
 969	 * If the number of iterations of the last scan plan is set to
 970	 * zero, it should run infinitely. However, this is not always the case.
 971	 * For example, when regular scan is requested the driver sets one scan
 972	 * plan with one iteration.
 973	 */
 974	if (!cmd->schedule[i - 1].iterations)
 975		cmd->schedule[i - 1].iterations = 0xff;
 976
 977	if (iwl_mvm_scan_use_ebs(mvm, vif)) {
 978		cmd->channel_opt[0].flags =
 979			cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS |
 980				    IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
 981				    IWL_SCAN_CHANNEL_FLAG_CACHE_ADD);
 982		cmd->channel_opt[0].non_ebs_ratio =
 983			cpu_to_le16(IWL_DENSE_EBS_SCAN_RATIO);
 984		cmd->channel_opt[1].flags =
 985			cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS |
 986				    IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
 987				    IWL_SCAN_CHANNEL_FLAG_CACHE_ADD);
 988		cmd->channel_opt[1].non_ebs_ratio =
 989			cpu_to_le16(IWL_SPARSE_EBS_SCAN_RATIO);
 990	}
 991
 992	iwl_mvm_lmac_scan_cfg_channels(mvm, params->channels,
 993				       params->n_channels, ssid_bitmap, cmd);
 994
 995	iwl_mvm_scan_set_legacy_probe_req(preq, &params->preq);
 996
 997	return 0;
 998}
 999
1000static int rate_to_scan_rate_flag(unsigned int rate)
1001{
1002	static const int rate_to_scan_rate[IWL_RATE_COUNT] = {
1003		[IWL_RATE_1M_INDEX]	= SCAN_CONFIG_RATE_1M,
1004		[IWL_RATE_2M_INDEX]	= SCAN_CONFIG_RATE_2M,
1005		[IWL_RATE_5M_INDEX]	= SCAN_CONFIG_RATE_5M,
1006		[IWL_RATE_11M_INDEX]	= SCAN_CONFIG_RATE_11M,
1007		[IWL_RATE_6M_INDEX]	= SCAN_CONFIG_RATE_6M,
1008		[IWL_RATE_9M_INDEX]	= SCAN_CONFIG_RATE_9M,
1009		[IWL_RATE_12M_INDEX]	= SCAN_CONFIG_RATE_12M,
1010		[IWL_RATE_18M_INDEX]	= SCAN_CONFIG_RATE_18M,
1011		[IWL_RATE_24M_INDEX]	= SCAN_CONFIG_RATE_24M,
1012		[IWL_RATE_36M_INDEX]	= SCAN_CONFIG_RATE_36M,
1013		[IWL_RATE_48M_INDEX]	= SCAN_CONFIG_RATE_48M,
1014		[IWL_RATE_54M_INDEX]	= SCAN_CONFIG_RATE_54M,
1015	};
1016
1017	return rate_to_scan_rate[rate];
1018}
1019
1020static __le32 iwl_mvm_scan_config_rates(struct iwl_mvm *mvm)
1021{
1022	struct ieee80211_supported_band *band;
1023	unsigned int rates = 0;
1024	int i;
1025
1026	band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ];
1027	for (i = 0; i < band->n_bitrates; i++)
1028		rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value);
1029	band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ];
1030	for (i = 0; i < band->n_bitrates; i++)
1031		rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value);
1032
1033	/* Set both basic rates and supported rates */
1034	rates |= SCAN_CONFIG_SUPPORTED_RATE(rates);
1035
1036	return cpu_to_le32(rates);
1037}
1038
1039static void iwl_mvm_fill_scan_dwell(struct iwl_mvm *mvm,
1040				    struct iwl_scan_dwell *dwell)
1041{
1042	dwell->active = IWL_SCAN_DWELL_ACTIVE;
1043	dwell->passive = IWL_SCAN_DWELL_PASSIVE;
1044	dwell->fragmented = IWL_SCAN_DWELL_FRAGMENTED;
1045	dwell->extended = IWL_SCAN_DWELL_EXTENDED;
1046}
1047
1048static void iwl_mvm_fill_channels(struct iwl_mvm *mvm, u8 *channels,
1049				  u32 max_channels)
1050{
1051	struct ieee80211_supported_band *band;
1052	int i, j = 0;
1053
1054	band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ];
1055	for (i = 0; i < band->n_channels && j < max_channels; i++, j++)
1056		channels[j] = band->channels[i].hw_value;
1057	band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ];
1058	for (i = 0; i < band->n_channels && j < max_channels; i++, j++)
1059		channels[j] = band->channels[i].hw_value;
1060}
1061
1062static void iwl_mvm_fill_scan_config_v1(struct iwl_mvm *mvm, void *config,
1063					u32 flags, u8 channel_flags,
1064					u32 max_channels)
1065{
1066	enum iwl_mvm_scan_type type = iwl_mvm_get_scan_type(mvm, NULL);
1067	struct iwl_scan_config_v1 *cfg = config;
1068
1069	cfg->flags = cpu_to_le32(flags);
1070	cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm));
1071	cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm));
1072	cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm);
1073	cfg->out_of_channel_time = cpu_to_le32(scan_timing[type].max_out_time);
1074	cfg->suspend_time = cpu_to_le32(scan_timing[type].suspend_time);
1075
1076	iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell);
1077
1078	memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN);
1079
1080	/* This function should not be called when using ADD_STA ver >=12 */
1081	WARN_ON_ONCE(iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA, 0) >= 12);
1082
1083	cfg->bcast_sta_id = mvm->aux_sta.sta_id;
1084	cfg->channel_flags = channel_flags;
1085
1086	iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels);
1087}
1088
1089static void iwl_mvm_fill_scan_config_v2(struct iwl_mvm *mvm, void *config,
1090					u32 flags, u8 channel_flags,
1091					u32 max_channels)
1092{
1093	struct iwl_scan_config_v2 *cfg = config;
1094
1095	cfg->flags = cpu_to_le32(flags);
1096	cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm));
1097	cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm));
1098	cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm);
1099
1100	if (iwl_mvm_is_cdb_supported(mvm)) {
1101		enum iwl_mvm_scan_type lb_type, hb_type;
1102
1103		lb_type = iwl_mvm_get_scan_type_band(mvm, NULL,
1104						     NL80211_BAND_2GHZ);
1105		hb_type = iwl_mvm_get_scan_type_band(mvm, NULL,
1106						     NL80211_BAND_5GHZ);
1107
1108		cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] =
1109			cpu_to_le32(scan_timing[lb_type].max_out_time);
1110		cfg->suspend_time[SCAN_LB_LMAC_IDX] =
1111			cpu_to_le32(scan_timing[lb_type].suspend_time);
1112
1113		cfg->out_of_channel_time[SCAN_HB_LMAC_IDX] =
1114			cpu_to_le32(scan_timing[hb_type].max_out_time);
1115		cfg->suspend_time[SCAN_HB_LMAC_IDX] =
1116			cpu_to_le32(scan_timing[hb_type].suspend_time);
1117	} else {
1118		enum iwl_mvm_scan_type type =
1119			iwl_mvm_get_scan_type(mvm, NULL);
1120
1121		cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] =
1122			cpu_to_le32(scan_timing[type].max_out_time);
1123		cfg->suspend_time[SCAN_LB_LMAC_IDX] =
1124			cpu_to_le32(scan_timing[type].suspend_time);
1125	}
1126
1127	iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell);
1128
1129	memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN);
1130
1131	/* This function should not be called when using ADD_STA ver >=12 */
1132	WARN_ON_ONCE(iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA, 0) >= 12);
1133
1134	cfg->bcast_sta_id = mvm->aux_sta.sta_id;
1135	cfg->channel_flags = channel_flags;
1136
1137	iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels);
1138}
1139
1140static int iwl_mvm_legacy_config_scan(struct iwl_mvm *mvm)
1141{
1142	void *cfg;
1143	int ret, cmd_size;
1144	struct iwl_host_cmd cmd = {
1145		.id = WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_CFG_CMD),
1146	};
1147	enum iwl_mvm_scan_type type;
1148	enum iwl_mvm_scan_type hb_type = IWL_SCAN_TYPE_NOT_SET;
1149	int num_channels =
1150		mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels +
1151		mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels;
1152	u32 flags;
1153	u8 channel_flags;
1154
1155	if (WARN_ON(num_channels > mvm->fw->ucode_capa.n_scan_channels))
1156		num_channels = mvm->fw->ucode_capa.n_scan_channels;
1157
1158	if (iwl_mvm_is_cdb_supported(mvm)) {
1159		type = iwl_mvm_get_scan_type_band(mvm, NULL,
1160						  NL80211_BAND_2GHZ);
1161		hb_type = iwl_mvm_get_scan_type_band(mvm, NULL,
1162						     NL80211_BAND_5GHZ);
1163		if (type == mvm->scan_type && hb_type == mvm->hb_scan_type)
1164			return 0;
1165	} else {
1166		type = iwl_mvm_get_scan_type(mvm, NULL);
1167		if (type == mvm->scan_type)
1168			return 0;
1169	}
1170
1171	if (iwl_mvm_cdb_scan_api(mvm))
1172		cmd_size = sizeof(struct iwl_scan_config_v2);
1173	else
1174		cmd_size = sizeof(struct iwl_scan_config_v1);
1175	cmd_size += mvm->fw->ucode_capa.n_scan_channels;
1176
1177	cfg = kzalloc(cmd_size, GFP_KERNEL);
1178	if (!cfg)
1179		return -ENOMEM;
1180
1181	flags = SCAN_CONFIG_FLAG_ACTIVATE |
1182		 SCAN_CONFIG_FLAG_ALLOW_CHUB_REQS |
1183		 SCAN_CONFIG_FLAG_SET_TX_CHAINS |
1184		 SCAN_CONFIG_FLAG_SET_RX_CHAINS |
1185		 SCAN_CONFIG_FLAG_SET_AUX_STA_ID |
1186		 SCAN_CONFIG_FLAG_SET_ALL_TIMES |
1187		 SCAN_CONFIG_FLAG_SET_LEGACY_RATES |
1188		 SCAN_CONFIG_FLAG_SET_MAC_ADDR |
1189		 SCAN_CONFIG_FLAG_SET_CHANNEL_FLAGS |
1190		 SCAN_CONFIG_N_CHANNELS(num_channels) |
1191		 (iwl_mvm_is_scan_fragmented(type) ?
1192		  SCAN_CONFIG_FLAG_SET_FRAGMENTED :
1193		  SCAN_CONFIG_FLAG_CLEAR_FRAGMENTED);
1194
1195	channel_flags = IWL_CHANNEL_FLAG_EBS |
1196			IWL_CHANNEL_FLAG_ACCURATE_EBS |
1197			IWL_CHANNEL_FLAG_EBS_ADD |
1198			IWL_CHANNEL_FLAG_PRE_SCAN_PASSIVE2ACTIVE;
1199
1200	/*
1201	 * Check for fragmented scan on LMAC2 - high band.
1202	 * LMAC1 - low band is checked above.
1203	 */
1204	if (iwl_mvm_cdb_scan_api(mvm)) {
1205		if (iwl_mvm_is_cdb_supported(mvm))
1206			flags |= (iwl_mvm_is_scan_fragmented(hb_type)) ?
1207				 SCAN_CONFIG_FLAG_SET_LMAC2_FRAGMENTED :
1208				 SCAN_CONFIG_FLAG_CLEAR_LMAC2_FRAGMENTED;
1209		iwl_mvm_fill_scan_config_v2(mvm, cfg, flags, channel_flags,
1210					    num_channels);
1211	} else {
1212		iwl_mvm_fill_scan_config_v1(mvm, cfg, flags, channel_flags,
1213					    num_channels);
1214	}
1215
1216	cmd.data[0] = cfg;
1217	cmd.len[0] = cmd_size;
1218	cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
1219
1220	IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n");
1221
1222	ret = iwl_mvm_send_cmd(mvm, &cmd);
1223	if (!ret) {
1224		mvm->scan_type = type;
1225		mvm->hb_scan_type = hb_type;
1226	}
1227
1228	kfree(cfg);
1229	return ret;
1230}
1231
1232int iwl_mvm_config_scan(struct iwl_mvm *mvm)
1233{
1234	struct iwl_scan_config cfg;
1235	struct iwl_host_cmd cmd = {
1236		.id = WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_CFG_CMD),
1237		.len[0] = sizeof(cfg),
1238		.data[0] = &cfg,
1239		.dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1240	};
1241
1242	if (!iwl_mvm_is_reduced_config_scan_supported(mvm))
1243		return iwl_mvm_legacy_config_scan(mvm);
1244
1245	memset(&cfg, 0, sizeof(cfg));
1246
1247	if (iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA, 0) < 12) {
1248		cfg.bcast_sta_id = mvm->aux_sta.sta_id;
1249	} else if (iwl_fw_lookup_cmd_ver(mvm->fw, SCAN_CFG_CMD, 0) < 5) {
1250		/*
1251		 * Fw doesn't use this sta anymore. Deprecated on SCAN_CFG_CMD
1252		 * version 5.
1253		 */
1254		cfg.bcast_sta_id = 0xff;
1255	}
1256
1257	cfg.tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm));
1258	cfg.rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm));
1259
1260	IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n");
1261
1262	return iwl_mvm_send_cmd(mvm, &cmd);
1263}
1264
1265static int iwl_mvm_scan_uid_by_status(struct iwl_mvm *mvm, int status)
1266{
1267	int i;
1268
1269	for (i = 0; i < mvm->max_scans; i++)
1270		if (mvm->scan_uid_status[i] == status)
1271			return i;
1272
1273	return -ENOENT;
1274}
1275
1276static void iwl_mvm_scan_umac_dwell(struct iwl_mvm *mvm,
1277				    struct iwl_scan_req_umac *cmd,
1278				    struct iwl_mvm_scan_params *params)
1279{
1280	struct iwl_mvm_scan_timing_params *timing, *hb_timing;
1281	u8 active_dwell, passive_dwell;
1282
1283	timing = &scan_timing[params->type];
1284	active_dwell = IWL_SCAN_DWELL_ACTIVE;
1285	passive_dwell = IWL_SCAN_DWELL_PASSIVE;
1286
1287	if (iwl_mvm_is_adaptive_dwell_supported(mvm)) {
1288		cmd->v7.adwell_default_n_aps_social =
1289			IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL;
1290		cmd->v7.adwell_default_n_aps =
1291			IWL_SCAN_ADWELL_DEFAULT_LB_N_APS;
1292
1293		if (iwl_mvm_is_adwell_hb_ap_num_supported(mvm))
1294			cmd->v9.adwell_default_hb_n_aps =
1295				IWL_SCAN_ADWELL_DEFAULT_HB_N_APS;
1296
1297		/* if custom max budget was configured with debugfs */
1298		if (IWL_MVM_ADWELL_MAX_BUDGET)
1299			cmd->v7.adwell_max_budget =
1300				cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET);
1301		else if (params->ssids && params->ssids[0].ssid_len)
1302			cmd->v7.adwell_max_budget =
1303				cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN);
1304		else
1305			cmd->v7.adwell_max_budget =
1306				cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN);
1307
1308		cmd->v7.scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1309		cmd->v7.max_out_time[SCAN_LB_LMAC_IDX] =
1310			cpu_to_le32(timing->max_out_time);
1311		cmd->v7.suspend_time[SCAN_LB_LMAC_IDX] =
1312			cpu_to_le32(timing->suspend_time);
1313
1314		if (iwl_mvm_is_cdb_supported(mvm)) {
1315			hb_timing = &scan_timing[params->hb_type];
1316
1317			cmd->v7.max_out_time[SCAN_HB_LMAC_IDX] =
1318				cpu_to_le32(hb_timing->max_out_time);
1319			cmd->v7.suspend_time[SCAN_HB_LMAC_IDX] =
1320				cpu_to_le32(hb_timing->suspend_time);
1321		}
1322
1323		if (!iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) {
1324			cmd->v7.active_dwell = active_dwell;
1325			cmd->v7.passive_dwell = passive_dwell;
1326			cmd->v7.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED;
1327		} else {
1328			cmd->v8.active_dwell[SCAN_LB_LMAC_IDX] = active_dwell;
1329			cmd->v8.passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell;
1330			if (iwl_mvm_is_cdb_supported(mvm)) {
1331				cmd->v8.active_dwell[SCAN_HB_LMAC_IDX] =
1332					active_dwell;
1333				cmd->v8.passive_dwell[SCAN_HB_LMAC_IDX] =
1334					passive_dwell;
1335			}
1336		}
1337	} else {
1338		cmd->v1.extended_dwell = IWL_SCAN_DWELL_EXTENDED;
1339		cmd->v1.active_dwell = active_dwell;
1340		cmd->v1.passive_dwell = passive_dwell;
1341		cmd->v1.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED;
1342
1343		if (iwl_mvm_is_cdb_supported(mvm)) {
1344			hb_timing = &scan_timing[params->hb_type];
1345
1346			cmd->v6.max_out_time[SCAN_HB_LMAC_IDX] =
1347					cpu_to_le32(hb_timing->max_out_time);
1348			cmd->v6.suspend_time[SCAN_HB_LMAC_IDX] =
1349					cpu_to_le32(hb_timing->suspend_time);
1350		}
1351
1352		if (iwl_mvm_cdb_scan_api(mvm)) {
1353			cmd->v6.scan_priority =
1354				cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1355			cmd->v6.max_out_time[SCAN_LB_LMAC_IDX] =
1356				cpu_to_le32(timing->max_out_time);
1357			cmd->v6.suspend_time[SCAN_LB_LMAC_IDX] =
1358				cpu_to_le32(timing->suspend_time);
1359		} else {
1360			cmd->v1.scan_priority =
1361				cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1362			cmd->v1.max_out_time =
1363				cpu_to_le32(timing->max_out_time);
1364			cmd->v1.suspend_time =
1365				cpu_to_le32(timing->suspend_time);
1366		}
1367	}
1368
1369	if (iwl_mvm_is_regular_scan(params))
1370		cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1371	else
1372		cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_2);
1373}
1374
1375static u32 iwl_mvm_scan_umac_ooc_priority(struct iwl_mvm_scan_params *params)
1376{
1377	return iwl_mvm_is_regular_scan(params) ?
1378		IWL_SCAN_PRIORITY_EXT_6 :
1379		IWL_SCAN_PRIORITY_EXT_2;
1380}
1381
1382static void
1383iwl_mvm_scan_umac_dwell_v11(struct iwl_mvm *mvm,
1384			    struct iwl_scan_general_params_v11 *general_params,
1385			    struct iwl_mvm_scan_params *params)
1386{
1387	struct iwl_mvm_scan_timing_params *timing, *hb_timing;
1388	u8 active_dwell, passive_dwell;
1389
1390	timing = &scan_timing[params->type];
1391	active_dwell = IWL_SCAN_DWELL_ACTIVE;
1392	passive_dwell = IWL_SCAN_DWELL_PASSIVE;
1393
1394	general_params->adwell_default_social_chn =
1395		IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL;
1396	general_params->adwell_default_2g = IWL_SCAN_ADWELL_DEFAULT_LB_N_APS;
1397	general_params->adwell_default_5g = IWL_SCAN_ADWELL_DEFAULT_HB_N_APS;
1398
1399	/* if custom max budget was configured with debugfs */
1400	if (IWL_MVM_ADWELL_MAX_BUDGET)
1401		general_params->adwell_max_budget =
1402			cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET);
1403	else if (params->ssids && params->ssids[0].ssid_len)
1404		general_params->adwell_max_budget =
1405			cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN);
1406	else
1407		general_params->adwell_max_budget =
1408			cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN);
1409
1410	general_params->scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1411	general_params->max_out_of_time[SCAN_LB_LMAC_IDX] =
1412		cpu_to_le32(timing->max_out_time);
1413	general_params->suspend_time[SCAN_LB_LMAC_IDX] =
1414		cpu_to_le32(timing->suspend_time);
1415
1416	hb_timing = &scan_timing[params->hb_type];
1417
1418	general_params->max_out_of_time[SCAN_HB_LMAC_IDX] =
1419		cpu_to_le32(hb_timing->max_out_time);
1420	general_params->suspend_time[SCAN_HB_LMAC_IDX] =
1421		cpu_to_le32(hb_timing->suspend_time);
1422
1423	general_params->active_dwell[SCAN_LB_LMAC_IDX] = active_dwell;
1424	general_params->passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell;
1425	general_params->active_dwell[SCAN_HB_LMAC_IDX] = active_dwell;
1426	general_params->passive_dwell[SCAN_HB_LMAC_IDX] = passive_dwell;
1427}
1428
1429struct iwl_mvm_scan_channel_segment {
1430	u8 start_idx;
1431	u8 end_idx;
1432	u8 first_channel_id;
1433	u8 last_channel_id;
1434	u8 channel_spacing_shift;
1435	u8 band;
1436};
1437
1438static const struct iwl_mvm_scan_channel_segment scan_channel_segments[] = {
1439	{
1440		.start_idx = 0,
1441		.end_idx = 13,
1442		.first_channel_id = 1,
1443		.last_channel_id = 14,
1444		.channel_spacing_shift = 0,
1445		.band = PHY_BAND_24
1446	},
1447	{
1448		.start_idx = 14,
1449		.end_idx = 41,
1450		.first_channel_id = 36,
1451		.last_channel_id = 144,
1452		.channel_spacing_shift = 2,
1453		.band = PHY_BAND_5
1454	},
1455	{
1456		.start_idx = 42,
1457		.end_idx = 50,
1458		.first_channel_id = 149,
1459		.last_channel_id = 181,
1460		.channel_spacing_shift = 2,
1461		.band = PHY_BAND_5
1462	},
1463	{
1464		.start_idx = 51,
1465		.end_idx = 111,
1466		.first_channel_id = 1,
1467		.last_channel_id = 241,
1468		.channel_spacing_shift = 2,
1469		.band = PHY_BAND_6
1470	},
1471};
1472
1473static int iwl_mvm_scan_ch_and_band_to_idx(u8 channel_id, u8 band)
1474{
1475	int i, index;
1476
1477	if (!channel_id)
1478		return -EINVAL;
1479
1480	for (i = 0; i < ARRAY_SIZE(scan_channel_segments); i++) {
1481		const struct iwl_mvm_scan_channel_segment *ch_segment =
1482			&scan_channel_segments[i];
1483		u32 ch_offset;
1484
1485		if (ch_segment->band != band ||
1486		    ch_segment->first_channel_id > channel_id ||
1487		    ch_segment->last_channel_id < channel_id)
1488			continue;
1489
1490		ch_offset = (channel_id - ch_segment->first_channel_id) >>
1491			ch_segment->channel_spacing_shift;
1492
1493		index = scan_channel_segments[i].start_idx + ch_offset;
1494		if (index < IWL_SCAN_NUM_CHANNELS)
1495			return index;
1496
1497		break;
1498	}
1499
1500	return -EINVAL;
1501}
1502
1503static const u8 p2p_go_friendly_chs[] = {
1504	36, 40, 44, 48, 149, 153, 157, 161, 165,
1505};
1506
1507static const u8 social_chs[] = {
1508	1, 6, 11
1509};
1510
1511static void iwl_mvm_scan_ch_add_n_aps_override(enum nl80211_iftype vif_type,
1512					       u8 ch_id, u8 band, u8 *ch_bitmap,
1513					       size_t bitmap_n_entries)
1514{
1515	int i;
1516
1517	if (vif_type != NL80211_IFTYPE_P2P_DEVICE)
1518		return;
1519
1520	for (i = 0; i < ARRAY_SIZE(p2p_go_friendly_chs); i++) {
1521		if (p2p_go_friendly_chs[i] == ch_id) {
1522			int ch_idx, bitmap_idx;
1523
1524			ch_idx = iwl_mvm_scan_ch_and_band_to_idx(ch_id, band);
1525			if (ch_idx < 0)
1526				return;
1527
1528			bitmap_idx = ch_idx / 8;
1529			if (bitmap_idx >= bitmap_n_entries)
1530				return;
1531
1532			ch_idx = ch_idx % 8;
1533			ch_bitmap[bitmap_idx] |= BIT(ch_idx);
1534
1535			return;
1536		}
1537	}
1538}
1539
1540static u32 iwl_mvm_scan_ch_n_aps_flag(enum nl80211_iftype vif_type, u8 ch_id)
1541{
1542	int i;
1543	u32 flags = 0;
1544
1545	if (vif_type != NL80211_IFTYPE_P2P_DEVICE)
1546		goto out;
1547
1548	for (i = 0; i < ARRAY_SIZE(p2p_go_friendly_chs); i++) {
1549		if (p2p_go_friendly_chs[i] == ch_id) {
1550			flags |= IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY_BIT;
1551			break;
1552		}
1553	}
1554
1555	if (flags)
1556		goto out;
1557
1558	for (i = 0; i < ARRAY_SIZE(social_chs); i++) {
1559		if (social_chs[i] == ch_id) {
1560			flags |= IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS_BIT;
1561			break;
1562		}
1563	}
1564
1565out:
1566	return flags;
1567}
1568
1569static void
1570iwl_mvm_umac_scan_cfg_channels(struct iwl_mvm *mvm,
1571			       struct ieee80211_channel **channels,
1572			       int n_channels, u32 flags,
1573			       struct iwl_scan_channel_cfg_umac *channel_cfg)
1574{
1575	int i;
1576
1577	for (i = 0; i < n_channels; i++) {
1578		channel_cfg[i].flags = cpu_to_le32(flags);
1579		channel_cfg[i].v1.channel_num = channels[i]->hw_value;
1580		if (iwl_mvm_is_scan_ext_chan_supported(mvm)) {
1581			enum nl80211_band band = channels[i]->band;
1582
1583			channel_cfg[i].v2.band =
1584				iwl_mvm_phy_band_from_nl80211(band);
1585			channel_cfg[i].v2.iter_count = 1;
1586			channel_cfg[i].v2.iter_interval = 0;
1587		} else {
1588			channel_cfg[i].v1.iter_count = 1;
1589			channel_cfg[i].v1.iter_interval = 0;
1590		}
1591	}
1592}
1593
1594static void
1595iwl_mvm_umac_scan_cfg_channels_v4(struct iwl_mvm *mvm,
1596				  struct ieee80211_channel **channels,
1597				  struct iwl_scan_channel_params_v4 *cp,
1598				  int n_channels, u32 flags,
1599				  enum nl80211_iftype vif_type)
1600{
1601	u8 *bitmap = cp->adwell_ch_override_bitmap;
1602	size_t bitmap_n_entries = ARRAY_SIZE(cp->adwell_ch_override_bitmap);
1603	int i;
1604
1605	for (i = 0; i < n_channels; i++) {
1606		enum nl80211_band band = channels[i]->band;
1607		struct iwl_scan_channel_cfg_umac *cfg =
1608			&cp->channel_config[i];
1609
1610		cfg->flags = cpu_to_le32(flags);
1611		cfg->v2.channel_num = channels[i]->hw_value;
1612		cfg->v2.band = iwl_mvm_phy_band_from_nl80211(band);
1613		cfg->v2.iter_count = 1;
1614		cfg->v2.iter_interval = 0;
1615
1616		iwl_mvm_scan_ch_add_n_aps_override(vif_type,
1617						   cfg->v2.channel_num,
1618						   cfg->v2.band, bitmap,
1619						   bitmap_n_entries);
1620	}
1621}
1622
1623static void
1624iwl_mvm_umac_scan_cfg_channels_v6(struct iwl_mvm *mvm,
1625				  struct ieee80211_channel **channels,
1626				  struct iwl_scan_channel_params_v6 *cp,
1627				  int n_channels, u32 flags,
1628				  enum nl80211_iftype vif_type)
1629{
1630	int i;
1631
1632	for (i = 0; i < n_channels; i++) {
1633		enum nl80211_band band = channels[i]->band;
1634		struct iwl_scan_channel_cfg_umac *cfg = &cp->channel_config[i];
1635		u32 n_aps_flag =
1636			iwl_mvm_scan_ch_n_aps_flag(vif_type,
1637						   channels[i]->hw_value);
1638
1639		cfg->flags = cpu_to_le32(flags | n_aps_flag);
1640		cfg->v2.channel_num = channels[i]->hw_value;
1641		cfg->v2.band = iwl_mvm_phy_band_from_nl80211(band);
1642		if (cfg80211_channel_is_psc(channels[i]))
1643			cfg->flags = 0;
1644		cfg->v2.iter_count = 1;
1645		cfg->v2.iter_interval = 0;
1646	}
1647}
1648
1649static void
1650iwl_mvm_umac_scan_fill_6g_chan_list(struct iwl_mvm *mvm,
1651				    struct iwl_mvm_scan_params *params,
1652				     struct iwl_scan_probe_params_v4 *pp)
1653{
1654	int j, idex_s = 0, idex_b = 0;
1655	struct cfg80211_scan_6ghz_params *scan_6ghz_params =
1656		params->scan_6ghz_params;
1657	bool hidden_supported = fw_has_capa(&mvm->fw->ucode_capa,
1658					    IWL_UCODE_TLV_CAPA_HIDDEN_6GHZ_SCAN);
1659
1660	for (j = 0; j < params->n_ssids && idex_s < SCAN_SHORT_SSID_MAX_SIZE;
1661	     j++) {
1662		if (!params->ssids[j].ssid_len)
1663			continue;
1664
1665		pp->short_ssid[idex_s] =
1666			cpu_to_le32(~crc32_le(~0, params->ssids[j].ssid,
1667					      params->ssids[j].ssid_len));
1668
1669		if (hidden_supported) {
1670			pp->direct_scan[idex_s].id = WLAN_EID_SSID;
1671			pp->direct_scan[idex_s].len = params->ssids[j].ssid_len;
1672			memcpy(pp->direct_scan[idex_s].ssid, params->ssids[j].ssid,
1673			       params->ssids[j].ssid_len);
1674		}
1675		idex_s++;
1676	}
1677
1678	/*
1679	 * Populate the arrays of the short SSIDs and the BSSIDs using the 6GHz
1680	 * collocated parameters. This might not be optimal, as this processing
1681	 * does not (yet) correspond to the actual channels, so it is possible
1682	 * that some entries would be left out.
1683	 *
1684	 * TODO: improve this logic.
1685	 */
1686	for (j = 0; j < params->n_6ghz_params; j++) {
1687		int k;
1688
1689		/* First, try to place the short SSID */
1690		if (scan_6ghz_params[j].short_ssid_valid) {
1691			for (k = 0; k < idex_s; k++) {
1692				if (pp->short_ssid[k] ==
1693				    cpu_to_le32(scan_6ghz_params[j].short_ssid))
1694					break;
1695			}
1696
1697			if (k == idex_s && idex_s < SCAN_SHORT_SSID_MAX_SIZE) {
1698				pp->short_ssid[idex_s++] =
1699					cpu_to_le32(scan_6ghz_params[j].short_ssid);
1700			}
1701		}
1702
1703		/* try to place BSSID for the same entry */
1704		for (k = 0; k < idex_b; k++) {
1705			if (!memcmp(&pp->bssid_array[k],
1706				    scan_6ghz_params[j].bssid, ETH_ALEN))
1707				break;
1708		}
1709
1710		if (k == idex_b && idex_b < SCAN_BSSID_MAX_SIZE) {
1711			memcpy(&pp->bssid_array[idex_b++],
1712			       scan_6ghz_params[j].bssid, ETH_ALEN);
1713		}
1714	}
1715
1716	pp->short_ssid_num = idex_s;
1717	pp->bssid_num = idex_b;
1718}
1719
1720/* TODO: this function can be merged with iwl_mvm_scan_umac_fill_ch_p_v6 */
1721static u32
1722iwl_mvm_umac_scan_cfg_channels_v6_6g(struct iwl_mvm *mvm,
1723				     struct iwl_mvm_scan_params *params,
1724				     u32 n_channels,
1725				     struct iwl_scan_probe_params_v4 *pp,
1726				     struct iwl_scan_channel_params_v6 *cp,
1727				     enum nl80211_iftype vif_type)
1728{
1729	int i;
1730	struct cfg80211_scan_6ghz_params *scan_6ghz_params =
1731		params->scan_6ghz_params;
1732	u32 ch_cnt;
1733
1734	for (i = 0, ch_cnt = 0; i < params->n_channels; i++) {
1735		struct iwl_scan_channel_cfg_umac *cfg =
1736			&cp->channel_config[ch_cnt];
1737
1738		u32 s_ssid_bitmap = 0, bssid_bitmap = 0, flags = 0;
1739		u8 j, k, s_max = 0, b_max = 0, n_used_bssid_entries;
1740		bool force_passive, found = false, allow_passive = true,
1741		     unsolicited_probe_on_chan = false, psc_no_listen = false;
1742
1743		/*
1744		 * Avoid performing passive scan on non PSC channels unless the
1745		 * scan is specifically a passive scan, i.e., no SSIDs
1746		 * configured in the scan command.
1747		 */
1748		if (!cfg80211_channel_is_psc(params->channels[i]) &&
1749		    !params->n_6ghz_params && params->n_ssids)
1750			continue;
1751
1752		cfg->v1.channel_num = params->channels[i]->hw_value;
1753		cfg->v2.band = 2;
1754		cfg->v2.iter_count = 1;
1755		cfg->v2.iter_interval = 0;
1756
1757		/*
1758		 * The optimize the scan time, i.e., reduce the scan dwell time
1759		 * on each channel, the below logic tries to set 3 direct BSSID
1760		 * probe requests for each broadcast probe request with a short
1761		 * SSID.
1762		 * TODO: improve this logic
1763		 */
1764		n_used_bssid_entries = 3;
1765		for (j = 0; j < params->n_6ghz_params; j++) {
1766			if (!(scan_6ghz_params[j].channel_idx == i))
1767				continue;
1768
1769			found = false;
1770			unsolicited_probe_on_chan |=
1771				scan_6ghz_params[j].unsolicited_probe;
1772			psc_no_listen |= scan_6ghz_params[j].psc_no_listen;
1773
1774			for (k = 0; k < pp->short_ssid_num; k++) {
1775				if (!scan_6ghz_params[j].unsolicited_probe &&
1776				    le32_to_cpu(pp->short_ssid[k]) ==
1777				    scan_6ghz_params[j].short_ssid) {
1778					/* Relevant short SSID bit set */
1779					if (s_ssid_bitmap & BIT(k)) {
1780						found = true;
1781						break;
1782					}
1783
1784					/*
1785					 * Use short SSID only to create a new
1786					 * iteration during channel dwell or in
1787					 * case that the short SSID has a
1788					 * matching SSID, i.e., scan for hidden
1789					 * APs.
1790					 */
1791					if (n_used_bssid_entries >= 3) {
1792						s_ssid_bitmap |= BIT(k);
1793						s_max++;
1794						n_used_bssid_entries -= 3;
1795						found = true;
1796						break;
1797					} else if (pp->direct_scan[k].len) {
1798						s_ssid_bitmap |= BIT(k);
1799						s_max++;
1800						found = true;
1801						allow_passive = false;
1802						break;
1803					}
1804				}
1805			}
1806
1807			if (found)
1808				continue;
1809
1810			for (k = 0; k < pp->bssid_num; k++) {
1811				if (!memcmp(&pp->bssid_array[k],
1812					    scan_6ghz_params[j].bssid,
1813					    ETH_ALEN)) {
1814					if (!(bssid_bitmap & BIT(k))) {
1815						bssid_bitmap |= BIT(k);
1816						b_max++;
1817						n_used_bssid_entries++;
1818					}
1819					break;
1820				}
1821			}
1822		}
1823
1824		if (cfg80211_channel_is_psc(params->channels[i]) &&
1825		    psc_no_listen)
1826			flags |= IWL_UHB_CHAN_CFG_FLAG_PSC_CHAN_NO_LISTEN;
1827
1828		if (unsolicited_probe_on_chan)
1829			flags |= IWL_UHB_CHAN_CFG_FLAG_UNSOLICITED_PROBE_RES;
1830
1831		/*
1832		 * In the following cases apply passive scan:
1833		 * 1. Non fragmented scan:
1834		 *	- PSC channel with NO_LISTEN_FLAG on should be treated
1835		 *	  like non PSC channel
1836		 *	- Non PSC channel with more than 3 short SSIDs or more
1837		 *	  than 9 BSSIDs.
1838		 *	- Non PSC Channel with unsolicited probe response and
1839		 *	  more than 2 short SSIDs or more than 6 BSSIDs.
1840		 *	- PSC channel with more than 2 short SSIDs or more than
1841		 *	  6 BSSIDs.
1842		 * 3. Fragmented scan:
1843		 *	- PSC channel with more than 1 SSID or 3 BSSIDs.
1844		 *	- Non PSC channel with more than 2 SSIDs or 6 BSSIDs.
1845		 *	- Non PSC channel with unsolicited probe response and
1846		 *	  more than 1 SSID or more than 3 BSSIDs.
1847		 */
1848		if (!iwl_mvm_is_scan_fragmented(params->type)) {
1849			if (!cfg80211_channel_is_psc(params->channels[i]) ||
1850			    flags & IWL_UHB_CHAN_CFG_FLAG_PSC_CHAN_NO_LISTEN) {
1851				force_passive = (s_max > 3 || b_max > 9);
1852				force_passive |= (unsolicited_probe_on_chan &&
1853						  (s_max > 2 || b_max > 6));
1854			} else {
1855				force_passive = (s_max > 2 || b_max > 6);
1856			}
1857		} else if (cfg80211_channel_is_psc(params->channels[i])) {
1858			force_passive = (s_max > 1 || b_max > 3);
1859		} else {
1860			force_passive = (s_max > 2 || b_max > 6);
1861			force_passive |= (unsolicited_probe_on_chan &&
1862					  (s_max > 1 || b_max > 3));
1863		}
1864		if ((allow_passive && force_passive) ||
1865		    (!(bssid_bitmap | s_ssid_bitmap) &&
1866		     !cfg80211_channel_is_psc(params->channels[i])))
1867			flags |= IWL_UHB_CHAN_CFG_FLAG_FORCE_PASSIVE;
1868		else
1869			flags |= bssid_bitmap | (s_ssid_bitmap << 16);
1870
1871		cfg->flags |= cpu_to_le32(flags);
1872		ch_cnt++;
1873	}
1874
1875	if (params->n_channels > ch_cnt)
1876		IWL_DEBUG_SCAN(mvm,
1877			       "6GHz: reducing number channels: (%u->%u)\n",
1878			       params->n_channels, ch_cnt);
1879
1880	return ch_cnt;
1881}
1882
1883static u8 iwl_mvm_scan_umac_chan_flags_v2(struct iwl_mvm *mvm,
1884					  struct iwl_mvm_scan_params *params,
1885					  struct ieee80211_vif *vif)
1886{
1887	u8 flags = 0;
1888
1889	flags |= IWL_SCAN_CHANNEL_FLAG_ENABLE_CHAN_ORDER;
1890
1891	if (iwl_mvm_scan_use_ebs(mvm, vif))
1892		flags |= IWL_SCAN_CHANNEL_FLAG_EBS |
1893			IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
1894			IWL_SCAN_CHANNEL_FLAG_CACHE_ADD;
1895
1896	/* set fragmented ebs for fragmented scan on HB channels */
1897	if ((!iwl_mvm_is_cdb_supported(mvm) &&
1898	     iwl_mvm_is_scan_fragmented(params->type)) ||
1899	    (iwl_mvm_is_cdb_supported(mvm) &&
1900	     iwl_mvm_is_scan_fragmented(params->hb_type)))
1901		flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG;
1902
1903	/*
1904	 * force EBS in case the scan is a fragmented and there is a need to take P2P
1905	 * GO operation into consideration during scan operation.
1906	 */
1907	if ((!iwl_mvm_is_cdb_supported(mvm) &&
1908	     iwl_mvm_is_scan_fragmented(params->type) && params->respect_p2p_go) ||
1909	    (iwl_mvm_is_cdb_supported(mvm) &&
1910	     iwl_mvm_is_scan_fragmented(params->hb_type) &&
1911	     params->respect_p2p_go_hb)) {
1912		IWL_DEBUG_SCAN(mvm, "Respect P2P GO. Force EBS\n");
1913		flags |= IWL_SCAN_CHANNEL_FLAG_FORCE_EBS;
1914	}
1915
1916	return flags;
1917}
1918
1919static void iwl_mvm_scan_6ghz_passive_scan(struct iwl_mvm *mvm,
1920					   struct iwl_mvm_scan_params *params,
1921					   struct ieee80211_vif *vif)
1922{
1923	struct ieee80211_supported_band *sband =
1924		&mvm->nvm_data->bands[NL80211_BAND_6GHZ];
1925	u32 n_disabled, i;
1926
1927	params->enable_6ghz_passive = false;
1928
1929	if (params->scan_6ghz)
1930		return;
1931
1932	if (!fw_has_capa(&mvm->fw->ucode_capa,
1933			 IWL_UCODE_TLV_CAPA_PASSIVE_6GHZ_SCAN)) {
1934		IWL_DEBUG_SCAN(mvm,
1935			       "6GHz passive scan: Not supported by FW\n");
1936		return;
1937	}
1938
1939	/* 6GHz passive scan allowed only on station interface  */
1940	if (vif->type != NL80211_IFTYPE_STATION) {
1941		IWL_DEBUG_SCAN(mvm,
1942			       "6GHz passive scan: not station interface\n");
1943		return;
1944	}
1945
1946	/*
1947	 * 6GHz passive scan is allowed in a defined time interval following HW
1948	 * reset or resume flow, or while not associated and a large interval
1949	 * has passed since the last 6GHz passive scan.
1950	 */
1951	if ((vif->cfg.assoc ||
1952	     time_after(mvm->last_6ghz_passive_scan_jiffies +
1953			(IWL_MVM_6GHZ_PASSIVE_SCAN_TIMEOUT * HZ), jiffies)) &&
1954	    (time_before(mvm->last_reset_or_resume_time_jiffies +
1955			 (IWL_MVM_6GHZ_PASSIVE_SCAN_ASSOC_TIMEOUT * HZ),
1956			 jiffies))) {
1957		IWL_DEBUG_SCAN(mvm, "6GHz passive scan: %s\n",
1958			       vif->cfg.assoc ? "associated" :
1959			       "timeout did not expire");
1960		return;
1961	}
1962
1963	/* not enough channels in the regular scan request */
1964	if (params->n_channels < IWL_MVM_6GHZ_PASSIVE_SCAN_MIN_CHANS) {
1965		IWL_DEBUG_SCAN(mvm,
1966			       "6GHz passive scan: not enough channels\n");
1967		return;
1968	}
1969
1970	for (i = 0; i < params->n_ssids; i++) {
1971		if (!params->ssids[i].ssid_len)
1972			break;
1973	}
1974
1975	/* not a wildcard scan, so cannot enable passive 6GHz scan */
1976	if (i == params->n_ssids) {
1977		IWL_DEBUG_SCAN(mvm,
1978			       "6GHz passive scan: no wildcard SSID\n");
1979		return;
1980	}
1981
1982	if (!sband || !sband->n_channels) {
1983		IWL_DEBUG_SCAN(mvm,
1984			       "6GHz passive scan: no 6GHz channels\n");
1985		return;
1986	}
1987
1988	for (i = 0, n_disabled = 0; i < sband->n_channels; i++) {
1989		if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED))
1990			n_disabled++;
1991	}
1992
1993	/*
1994	 * Not all the 6GHz channels are disabled, so no need for 6GHz passive
1995	 * scan
1996	 */
1997	if (n_disabled != sband->n_channels) {
1998		IWL_DEBUG_SCAN(mvm,
1999			       "6GHz passive scan: 6GHz channels enabled\n");
2000		return;
2001	}
2002
2003	/* all conditions to enable 6ghz passive scan are satisfied */
2004	IWL_DEBUG_SCAN(mvm, "6GHz passive scan: can be enabled\n");
2005	params->enable_6ghz_passive = true;
2006}
2007
2008static u16 iwl_mvm_scan_umac_flags_v2(struct iwl_mvm *mvm,
2009				      struct iwl_mvm_scan_params *params,
2010				      struct ieee80211_vif *vif,
2011				      int type)
2012{
2013	u16 flags = 0;
2014
2015	/*
2016	 * If no direct SSIDs are provided perform a passive scan. Otherwise,
2017	 * if there is a single SSID which is not the broadcast SSID, assume
2018	 * that the scan is intended for roaming purposes and thus enable Rx on
2019	 * all chains to improve chances of hearing the beacons/probe responses.
2020	 */
2021	if (params->n_ssids == 0)
2022		flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FORCE_PASSIVE;
2023	else if (params->n_ssids == 1 && params->ssids[0].ssid_len)
2024		flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_USE_ALL_RX_CHAINS;
2025
2026	if (iwl_mvm_is_scan_fragmented(params->type))
2027		flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1;
2028
2029	if (iwl_mvm_is_scan_fragmented(params->hb_type))
2030		flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC2;
2031
2032	if (params->pass_all)
2033		flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PASS_ALL;
2034	else
2035		flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_MATCH;
2036
2037	if (!iwl_mvm_is_regular_scan(params))
2038		flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PERIODIC;
2039
2040	if (params->iter_notif ||
2041	    mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED)
2042		flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_NTFY_ITER_COMPLETE;
2043
2044	if (IWL_MVM_ADWELL_ENABLE)
2045		flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_ADAPTIVE_DWELL;
2046
2047	if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT)
2048		flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PREEMPTIVE;
2049
2050	if ((type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) &&
2051	    params->flags & NL80211_SCAN_FLAG_COLOCATED_6GHZ)
2052		flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_TRIGGER_UHB_SCAN;
2053
2054	if (params->enable_6ghz_passive)
2055		flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_6GHZ_PASSIVE_SCAN;
2056
2057	if (iwl_mvm_is_oce_supported(mvm) &&
2058	    (params->flags & (NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP |
2059			      NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE |
2060			      NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME)))
2061		flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_OCE;
2062
2063	return flags;
2064}
2065
2066static u8 iwl_mvm_scan_umac_flags2(struct iwl_mvm *mvm,
2067				   struct iwl_mvm_scan_params *params,
2068				   struct ieee80211_vif *vif, int type)
2069{
2070	u8 flags = 0;
2071
2072	if (iwl_mvm_is_cdb_supported(mvm)) {
2073		if (params->respect_p2p_go)
2074			flags |= IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_LB;
2075		if (params->respect_p2p_go_hb)
2076			flags |= IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_HB;
2077	} else {
2078		if (params->respect_p2p_go)
2079			flags = IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_LB |
2080				IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_HB;
2081	}
2082
2083	return flags;
2084}
2085
2086static u16 iwl_mvm_scan_umac_flags(struct iwl_mvm *mvm,
2087				   struct iwl_mvm_scan_params *params,
2088				   struct ieee80211_vif *vif)
2089{
2090	u16 flags = 0;
2091
2092	if (params->n_ssids == 0)
2093		flags = IWL_UMAC_SCAN_GEN_FLAGS_PASSIVE;
2094
2095	if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0)
2096		flags |= IWL_UMAC_SCAN_GEN_FLAGS_PRE_CONNECT;
2097
2098	if (iwl_mvm_is_scan_fragmented(params->type))
2099		flags |= IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED;
2100
2101	if (iwl_mvm_is_cdb_supported(mvm) &&
2102	    iwl_mvm_is_scan_fragmented(params->hb_type))
2103		flags |= IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED;
2104
2105	if (iwl_mvm_rrm_scan_needed(mvm) &&
2106	    fw_has_capa(&mvm->fw->ucode_capa,
2107			IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
2108		flags |= IWL_UMAC_SCAN_GEN_FLAGS_RRM_ENABLED;
2109
2110	if (params->pass_all)
2111		flags |= IWL_UMAC_SCAN_GEN_FLAGS_PASS_ALL;
2112	else
2113		flags |= IWL_UMAC_SCAN_GEN_FLAGS_MATCH;
2114
2115	if (!iwl_mvm_is_regular_scan(params))
2116		flags |= IWL_UMAC_SCAN_GEN_FLAGS_PERIODIC;
2117
2118	if (params->iter_notif)
2119		flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE;
2120
2121#ifdef CONFIG_IWLWIFI_DEBUGFS
2122	if (mvm->scan_iter_notif_enabled)
2123		flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE;
2124#endif
2125
2126	if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED)
2127		flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE;
2128
2129	if (iwl_mvm_is_adaptive_dwell_supported(mvm) && IWL_MVM_ADWELL_ENABLE)
2130		flags |= IWL_UMAC_SCAN_GEN_FLAGS_ADAPTIVE_DWELL;
2131
2132	/*
2133	 * Extended dwell is relevant only for low band to start with, as it is
2134	 * being used for social channles only (1, 6, 11), so we can check
2135	 * only scan type on low band also for CDB.
2136	 */
2137	if (iwl_mvm_is_regular_scan(params) &&
2138	    vif->type != NL80211_IFTYPE_P2P_DEVICE &&
2139	    !iwl_mvm_is_scan_fragmented(params->type) &&
2140	    !iwl_mvm_is_adaptive_dwell_supported(mvm) &&
2141	    !iwl_mvm_is_oce_supported(mvm))
2142		flags |= IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL;
2143
2144	if (iwl_mvm_is_oce_supported(mvm)) {
2145		if ((params->flags &
2146		     NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE))
2147			flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_HIGH_TX_RATE;
2148		/* Since IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL and
2149		 * NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION shares
2150		 * the same bit, we need to make sure that we use this bit here
2151		 * only when IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL cannot be
2152		 * used. */
2153		if ((params->flags &
2154		     NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) &&
2155		     !WARN_ON_ONCE(!iwl_mvm_is_adaptive_dwell_supported(mvm)))
2156			flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_DEFER_SUPP;
2157		if ((params->flags & NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME))
2158			flags |= IWL_UMAC_SCAN_GEN_FLAGS_MAX_CHNL_TIME;
2159	}
2160
2161	return flags;
2162}
2163
2164static int
2165iwl_mvm_fill_scan_sched_params(struct iwl_mvm_scan_params *params,
2166			       struct iwl_scan_umac_schedule *schedule,
2167			       __le16 *delay)
2168{
2169	int i;
2170	if (WARN_ON(!params->n_scan_plans ||
2171		    params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS))
2172		return -EINVAL;
2173
2174	for (i = 0; i < params->n_scan_plans; i++) {
2175		struct cfg80211_sched_scan_plan *scan_plan =
2176			&params->scan_plans[i];
2177
2178		schedule[i].iter_count = scan_plan->iterations;
2179		schedule[i].interval =
2180			cpu_to_le16(scan_plan->interval);
2181	}
2182
2183	/*
2184	 * If the number of iterations of the last scan plan is set to
2185	 * zero, it should run infinitely. However, this is not always the case.
2186	 * For example, when regular scan is requested the driver sets one scan
2187	 * plan with one iteration.
2188	 */
2189	if (!schedule[params->n_scan_plans - 1].iter_count)
2190		schedule[params->n_scan_plans - 1].iter_count = 0xff;
2191
2192	*delay = cpu_to_le16(params->delay);
2193
2194	return 0;
2195}
2196
2197static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2198			     struct iwl_mvm_scan_params *params,
2199			     int type, int uid)
2200{
2201	struct iwl_scan_req_umac *cmd = mvm->scan_cmd;
2202	struct iwl_scan_umac_chan_param *chan_param;
2203	void *cmd_data = iwl_mvm_get_scan_req_umac_data(mvm);
2204	void *sec_part = (u8 *)cmd_data + sizeof(struct iwl_scan_channel_cfg_umac) *
2205		mvm->fw->ucode_capa.n_scan_channels;
2206	struct iwl_scan_req_umac_tail_v2 *tail_v2 =
2207		(struct iwl_scan_req_umac_tail_v2 *)sec_part;
2208	struct iwl_scan_req_umac_tail_v1 *tail_v1;
2209	struct iwl_ssid_ie *direct_scan;
2210	int ret = 0;
2211	u32 ssid_bitmap = 0;
2212	u8 channel_flags = 0;
2213	u16 gen_flags;
2214	struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif);
2215
2216	chan_param = iwl_mvm_get_scan_req_umac_channel(mvm);
2217
2218	iwl_mvm_scan_umac_dwell(mvm, cmd, params);
2219
2220	mvm->scan_uid_status[uid] = type;
2221
2222	cmd->uid = cpu_to_le32(uid);
2223	gen_flags = iwl_mvm_scan_umac_flags(mvm, params, vif);
2224	cmd->general_flags = cpu_to_le16(gen_flags);
2225	if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) {
2226		if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED)
2227			cmd->v8.num_of_fragments[SCAN_LB_LMAC_IDX] =
2228							IWL_SCAN_NUM_OF_FRAGS;
2229		if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED)
2230			cmd->v8.num_of_fragments[SCAN_HB_LMAC_IDX] =
2231							IWL_SCAN_NUM_OF_FRAGS;
2232
2233		cmd->v8.general_flags2 =
2234			IWL_UMAC_SCAN_GEN_FLAGS2_ALLOW_CHNL_REORDER;
2235	}
2236
2237	cmd->scan_start_mac_id = scan_vif->id;
2238
2239	if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT)
2240		cmd->flags = cpu_to_le32(IWL_UMAC_SCAN_FLAG_PREEMPTIVE);
2241
2242	if (iwl_mvm_scan_use_ebs(mvm, vif)) {
2243		channel_flags = IWL_SCAN_CHANNEL_FLAG_EBS |
2244				IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
2245				IWL_SCAN_CHANNEL_FLAG_CACHE_ADD;
2246
2247		/* set fragmented ebs for fragmented scan on HB channels */
2248		if (iwl_mvm_is_frag_ebs_supported(mvm)) {
2249			if (gen_flags &
2250			    IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED ||
2251			    (!iwl_mvm_is_cdb_supported(mvm) &&
2252			     gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED))
2253				channel_flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG;
2254		}
2255	}
2256
2257	chan_param->flags = channel_flags;
2258	chan_param->count = params->n_channels;
2259
2260	ret = iwl_mvm_fill_scan_sched_params(params, tail_v2->schedule,
2261					     &tail_v2->delay);
2262	if (ret) {
2263		mvm->scan_uid_status[uid] = 0;
2264		return ret;
2265	}
2266
2267	if (iwl_mvm_is_scan_ext_chan_supported(mvm)) {
2268		tail_v2->preq = params->preq;
2269		direct_scan = tail_v2->direct_scan;
2270	} else {
2271		tail_v1 = (struct iwl_scan_req_umac_tail_v1 *)sec_part;
2272		iwl_mvm_scan_set_legacy_probe_req(&tail_v1->preq,
2273						  &params->preq);
2274		direct_scan = tail_v1->direct_scan;
2275	}
2276	iwl_scan_build_ssids(params, direct_scan, &ssid_bitmap);
2277	iwl_mvm_umac_scan_cfg_channels(mvm, params->channels,
2278				       params->n_channels, ssid_bitmap,
2279				       cmd_data);
2280	return 0;
2281}
2282
2283static void
2284iwl_mvm_scan_umac_fill_general_p_v11(struct iwl_mvm *mvm,
2285				     struct iwl_mvm_scan_params *params,
2286				     struct ieee80211_vif *vif,
2287				     struct iwl_scan_general_params_v11 *gp,
2288				     u16 gen_flags, u8 gen_flags2)
2289{
2290	struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif);
2291
2292	iwl_mvm_scan_umac_dwell_v11(mvm, gp, params);
2293
2294	IWL_DEBUG_SCAN(mvm, "Gerenal: flags=0x%x, flags2=0x%x\n",
2295		       gen_flags, gen_flags2);
2296
2297	gp->flags = cpu_to_le16(gen_flags);
2298	gp->flags2 = gen_flags2;
2299
2300	if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1)
2301		gp->num_of_fragments[SCAN_LB_LMAC_IDX] = IWL_SCAN_NUM_OF_FRAGS;
2302	if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC2)
2303		gp->num_of_fragments[SCAN_HB_LMAC_IDX] = IWL_SCAN_NUM_OF_FRAGS;
2304
2305	gp->scan_start_mac_id = scan_vif->id;
2306}
2307
2308static void
2309iwl_mvm_scan_umac_fill_probe_p_v3(struct iwl_mvm_scan_params *params,
2310				  struct iwl_scan_probe_params_v3 *pp)
2311{
2312	pp->preq = params->preq;
2313	pp->ssid_num = params->n_ssids;
2314	iwl_scan_build_ssids(params, pp->direct_scan, NULL);
2315}
2316
2317static void
2318iwl_mvm_scan_umac_fill_probe_p_v4(struct iwl_mvm_scan_params *params,
2319				  struct iwl_scan_probe_params_v4 *pp,
2320				  u32 *bitmap_ssid)
2321{
2322	pp->preq = params->preq;
2323	iwl_scan_build_ssids(params, pp->direct_scan, bitmap_ssid);
2324}
2325
2326static void
2327iwl_mvm_scan_umac_fill_ch_p_v4(struct iwl_mvm *mvm,
2328			       struct iwl_mvm_scan_params *params,
2329			       struct ieee80211_vif *vif,
2330			       struct iwl_scan_channel_params_v4 *cp,
2331			       u32 channel_cfg_flags)
2332{
2333	cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif);
2334	cp->count = params->n_channels;
2335	cp->num_of_aps_override = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY;
2336
2337	iwl_mvm_umac_scan_cfg_channels_v4(mvm, params->channels, cp,
2338					  params->n_channels,
2339					  channel_cfg_flags,
2340					  vif->type);
2341}
2342
2343static void
2344iwl_mvm_scan_umac_fill_ch_p_v6(struct iwl_mvm *mvm,
2345			       struct iwl_mvm_scan_params *params,
2346			       struct ieee80211_vif *vif,
2347			       struct iwl_scan_channel_params_v6 *cp,
2348			       u32 channel_cfg_flags)
2349{
2350	cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif);
2351	cp->count = params->n_channels;
2352	cp->n_aps_override[0] = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY;
2353	cp->n_aps_override[1] = IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS;
2354
2355	iwl_mvm_umac_scan_cfg_channels_v6(mvm, params->channels, cp,
2356					  params->n_channels,
2357					  channel_cfg_flags,
2358					  vif->type);
2359
2360	if (params->enable_6ghz_passive) {
2361		struct ieee80211_supported_band *sband =
2362			&mvm->nvm_data->bands[NL80211_BAND_6GHZ];
2363		u32 i;
2364
2365		for (i = 0; i < sband->n_channels; i++) {
2366			struct ieee80211_channel *channel =
2367				&sband->channels[i];
2368
2369			struct iwl_scan_channel_cfg_umac *cfg =
2370				&cp->channel_config[cp->count];
2371
2372			if (!cfg80211_channel_is_psc(channel))
2373				continue;
2374
2375			cfg->flags = 0;
2376			cfg->v2.channel_num = channel->hw_value;
2377			cfg->v2.band = PHY_BAND_6;
2378			cfg->v2.iter_count = 1;
2379			cfg->v2.iter_interval = 0;
2380			cp->count++;
2381		}
2382	}
2383}
2384
2385static int iwl_mvm_scan_umac_v12(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2386				 struct iwl_mvm_scan_params *params, int type,
2387				 int uid)
2388{
2389	struct iwl_scan_req_umac_v12 *cmd = mvm->scan_cmd;
2390	struct iwl_scan_req_params_v12 *scan_p = &cmd->scan_params;
2391	int ret;
2392	u16 gen_flags;
2393
2394	mvm->scan_uid_status[uid] = type;
2395
2396	cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(params));
2397	cmd->uid = cpu_to_le32(uid);
2398
2399	gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type);
2400	iwl_mvm_scan_umac_fill_general_p_v11(mvm, params, vif,
2401					     &scan_p->general_params,
2402					     gen_flags, 0);
2403
2404	ret = iwl_mvm_fill_scan_sched_params(params,
2405					     scan_p->periodic_params.schedule,
2406					     &scan_p->periodic_params.delay);
2407	if (ret)
2408		return ret;
2409
2410	iwl_mvm_scan_umac_fill_probe_p_v3(params, &scan_p->probe_params);
2411	iwl_mvm_scan_umac_fill_ch_p_v4(mvm, params, vif,
2412				       &scan_p->channel_params, 0);
2413
2414	return 0;
2415}
2416
2417static int iwl_mvm_scan_umac_v14_and_above(struct iwl_mvm *mvm,
2418					   struct ieee80211_vif *vif,
2419					   struct iwl_mvm_scan_params *params,
2420					   int type, int uid, u32 version)
2421{
2422	struct iwl_scan_req_umac_v15 *cmd = mvm->scan_cmd;
2423	struct iwl_scan_req_params_v15 *scan_p = &cmd->scan_params;
2424	struct iwl_scan_channel_params_v6 *cp = &scan_p->channel_params;
2425	struct iwl_scan_probe_params_v4 *pb = &scan_p->probe_params;
2426	int ret;
2427	u16 gen_flags;
2428	u8 gen_flags2;
2429	u32 bitmap_ssid = 0;
2430
2431	mvm->scan_uid_status[uid] = type;
2432
2433	cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(params));
2434	cmd->uid = cpu_to_le32(uid);
2435
2436	gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type);
2437
2438	if (version >= 15)
2439		gen_flags2 = iwl_mvm_scan_umac_flags2(mvm, params, vif, type);
2440	else
2441		gen_flags2 = 0;
2442
2443	iwl_mvm_scan_umac_fill_general_p_v11(mvm, params, vif,
2444					     &scan_p->general_params,
2445					     gen_flags, gen_flags2);
2446
2447	ret = iwl_mvm_fill_scan_sched_params(params,
2448					     scan_p->periodic_params.schedule,
2449					     &scan_p->periodic_params.delay);
2450	if (ret)
2451		return ret;
2452
2453	if (!params->scan_6ghz) {
2454		iwl_mvm_scan_umac_fill_probe_p_v4(params, &scan_p->probe_params,
2455					  &bitmap_ssid);
2456		iwl_mvm_scan_umac_fill_ch_p_v6(mvm, params, vif,
2457				       &scan_p->channel_params, bitmap_ssid);
2458
2459		return 0;
2460	} else {
2461		pb->preq = params->preq;
2462	}
2463
2464	cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif);
2465	cp->n_aps_override[0] = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY;
2466	cp->n_aps_override[1] = IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS;
2467
2468	iwl_mvm_umac_scan_fill_6g_chan_list(mvm, params, pb);
2469
2470	cp->count = iwl_mvm_umac_scan_cfg_channels_v6_6g(mvm, params,
2471							 params->n_channels,
2472							 pb, cp, vif->type);
2473	if (!cp->count) {
2474		mvm->scan_uid_status[uid] = 0;
2475		return -EINVAL;
2476	}
2477
2478	if (!params->n_ssids ||
2479	    (params->n_ssids == 1 && !params->ssids[0].ssid_len))
2480		cp->flags |= IWL_SCAN_CHANNEL_FLAG_6G_PSC_NO_FILTER;
2481
2482	return 0;
2483}
2484
2485static int iwl_mvm_scan_umac_v14(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2486				 struct iwl_mvm_scan_params *params, int type,
2487				 int uid)
2488{
2489	return iwl_mvm_scan_umac_v14_and_above(mvm, vif, params, type, uid, 14);
2490}
2491
2492static int iwl_mvm_scan_umac_v15(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2493				 struct iwl_mvm_scan_params *params, int type,
2494				 int uid)
2495{
2496	return iwl_mvm_scan_umac_v14_and_above(mvm, vif, params, type, uid, 15);
2497}
2498
2499static int iwl_mvm_num_scans(struct iwl_mvm *mvm)
2500{
2501	return hweight32(mvm->scan_status & IWL_MVM_SCAN_MASK);
2502}
2503
2504static int iwl_mvm_check_running_scans(struct iwl_mvm *mvm, int type)
2505{
2506	bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
2507					 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
2508
2509	/* This looks a bit arbitrary, but the idea is that if we run
2510	 * out of possible simultaneous scans and the userspace is
2511	 * trying to run a scan type that is already running, we
2512	 * return -EBUSY.  But if the userspace wants to start a
2513	 * different type of scan, we stop the opposite type to make
2514	 * space for the new request.  The reason is backwards
2515	 * compatibility with old wpa_supplicant that wouldn't stop a
2516	 * scheduled scan before starting a normal scan.
2517	 */
2518
2519	/* FW supports only a single periodic scan */
2520	if ((type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) &&
2521	    mvm->scan_status & (IWL_MVM_SCAN_SCHED | IWL_MVM_SCAN_NETDETECT))
2522		return -EBUSY;
2523
2524	if (iwl_mvm_num_scans(mvm) < mvm->max_scans)
2525		return 0;
2526
2527	/* Use a switch, even though this is a bitmask, so that more
2528	 * than one bits set will fall in default and we will warn.
2529	 */
2530	switch (type) {
2531	case IWL_MVM_SCAN_REGULAR:
2532		if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK)
2533			return -EBUSY;
2534		return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2535	case IWL_MVM_SCAN_SCHED:
2536		if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK)
2537			return -EBUSY;
2538		return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2539	case IWL_MVM_SCAN_NETDETECT:
2540		/* For non-unified images, there's no need to stop
2541		 * anything for net-detect since the firmware is
2542		 * restarted anyway.  This way, any sched scans that
2543		 * were running will be restarted when we resume.
2544		 */
2545		if (!unified_image)
2546			return 0;
2547
2548		/* If this is a unified image and we ran out of scans,
2549		 * we need to stop something.  Prefer stopping regular
2550		 * scans, because the results are useless at this
2551		 * point, and we should be able to keep running
2552		 * another scheduled scan while suspended.
2553		 */
2554		if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK)
2555			return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR,
2556						 true);
2557		if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK)
2558			return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED,
2559						 true);
2560		/* Something is wrong if no scan was running but we
2561		 * ran out of scans.
2562		 */
2563		fallthrough;
2564	default:
2565		WARN_ON(1);
2566		break;
2567	}
2568
2569	return -EIO;
2570}
2571
2572#define SCAN_TIMEOUT 30000
2573
2574void iwl_mvm_scan_timeout_wk(struct work_struct *work)
2575{
2576	struct delayed_work *delayed_work = to_delayed_work(work);
2577	struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm,
2578					   scan_timeout_dwork);
2579
2580	IWL_ERR(mvm, "regular scan timed out\n");
2581
2582	iwl_force_nmi(mvm->trans);
2583}
2584
2585static void iwl_mvm_fill_scan_type(struct iwl_mvm *mvm,
2586				   struct iwl_mvm_scan_params *params,
2587				   struct ieee80211_vif *vif)
2588{
2589	if (iwl_mvm_is_cdb_supported(mvm)) {
2590		params->type =
2591			iwl_mvm_get_scan_type_band(mvm, vif,
2592						   NL80211_BAND_2GHZ);
2593		params->hb_type =
2594			iwl_mvm_get_scan_type_band(mvm, vif,
2595						   NL80211_BAND_5GHZ);
2596	} else {
2597		params->type = iwl_mvm_get_scan_type(mvm, vif);
2598	}
2599}
2600
2601struct iwl_scan_umac_handler {
2602	u8 version;
2603	int (*handler)(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2604		       struct iwl_mvm_scan_params *params, int type, int uid);
2605};
2606
2607#define IWL_SCAN_UMAC_HANDLER(_ver) {		\
2608	.version = _ver,			\
2609	.handler = iwl_mvm_scan_umac_v##_ver,	\
2610}
2611
2612static const struct iwl_scan_umac_handler iwl_scan_umac_handlers[] = {
2613	/* set the newest version first to shorten the list traverse time */
2614	IWL_SCAN_UMAC_HANDLER(15),
2615	IWL_SCAN_UMAC_HANDLER(14),
2616	IWL_SCAN_UMAC_HANDLER(12),
2617};
2618
2619static int iwl_mvm_build_scan_cmd(struct iwl_mvm *mvm,
2620				  struct ieee80211_vif *vif,
2621				  struct iwl_host_cmd *hcmd,
2622				  struct iwl_mvm_scan_params *params,
2623				  int type)
2624{
2625	int uid, i, err;
2626	u8 scan_ver;
2627
2628	lockdep_assert_held(&mvm->mutex);
2629	memset(mvm->scan_cmd, 0, mvm->scan_cmd_size);
2630
2631	if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2632		hcmd->id = SCAN_OFFLOAD_REQUEST_CMD;
2633
2634		return iwl_mvm_scan_lmac(mvm, vif, params);
2635	}
2636
2637	uid = iwl_mvm_scan_uid_by_status(mvm, 0);
2638	if (uid < 0)
2639		return uid;
2640
2641	hcmd->id = WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_REQ_UMAC);
2642
2643	scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, SCAN_REQ_UMAC,
2644					 IWL_FW_CMD_VER_UNKNOWN);
2645
2646	for (i = 0; i < ARRAY_SIZE(iwl_scan_umac_handlers); i++) {
2647		const struct iwl_scan_umac_handler *ver_handler =
2648			&iwl_scan_umac_handlers[i];
2649
2650		if (ver_handler->version != scan_ver)
2651			continue;
2652
2653		return ver_handler->handler(mvm, vif, params, type, uid);
2654	}
2655
2656	err = iwl_mvm_scan_umac(mvm, vif, params, type, uid);
2657	if (err)
2658		return err;
2659
2660	return uid;
2661}
2662
2663struct iwl_mvm_scan_respect_p2p_go_iter_data {
2664	struct ieee80211_vif *current_vif;
2665	bool p2p_go;
2666	enum nl80211_band band;
2667};
2668
2669static void iwl_mvm_scan_respect_p2p_go_iter(void *_data, u8 *mac,
2670					     struct ieee80211_vif *vif)
2671{
2672	struct iwl_mvm_scan_respect_p2p_go_iter_data *data = _data;
2673	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2674
2675	/* exclude the given vif */
2676	if (vif == data->current_vif)
2677		return;
2678
2679	if (vif->type == NL80211_IFTYPE_AP && vif->p2p &&
2680	    mvmvif->phy_ctxt->id < NUM_PHY_CTX &&
2681	    (data->band == NUM_NL80211_BANDS ||
2682	     mvmvif->phy_ctxt->channel->band == data->band))
2683		data->p2p_go = true;
2684}
2685
2686static bool _iwl_mvm_get_respect_p2p_go(struct iwl_mvm *mvm,
2687					struct ieee80211_vif *vif,
2688					bool low_latency,
2689					enum nl80211_band band)
2690{
2691	struct iwl_mvm_scan_respect_p2p_go_iter_data data = {
2692		.current_vif = vif,
2693		.p2p_go = false,
2694		.band = band,
2695	};
2696
2697	if (!low_latency)
2698		return false;
2699
2700	ieee80211_iterate_active_interfaces_atomic(mvm->hw,
2701						   IEEE80211_IFACE_ITER_NORMAL,
2702						   iwl_mvm_scan_respect_p2p_go_iter,
2703						   &data);
2704
2705	return data.p2p_go;
2706}
2707
2708static bool iwl_mvm_get_respect_p2p_go_band(struct iwl_mvm *mvm,
2709					    struct ieee80211_vif *vif,
2710					    enum nl80211_band band)
2711{
2712	bool low_latency = iwl_mvm_low_latency_band(mvm, band);
2713
2714	return _iwl_mvm_get_respect_p2p_go(mvm, vif, low_latency, band);
2715}
2716
2717static bool iwl_mvm_get_respect_p2p_go(struct iwl_mvm *mvm,
2718				       struct ieee80211_vif *vif)
2719{
2720	bool low_latency = iwl_mvm_low_latency(mvm);
2721
2722	return _iwl_mvm_get_respect_p2p_go(mvm, vif, low_latency,
2723					   NUM_NL80211_BANDS);
2724}
2725
2726static void iwl_mvm_fill_respect_p2p_go(struct iwl_mvm *mvm,
2727					struct iwl_mvm_scan_params *params,
2728					struct ieee80211_vif *vif)
2729{
2730	if (iwl_mvm_is_cdb_supported(mvm)) {
2731		params->respect_p2p_go =
2732			iwl_mvm_get_respect_p2p_go_band(mvm, vif,
2733							NL80211_BAND_2GHZ);
2734		params->respect_p2p_go_hb =
2735			iwl_mvm_get_respect_p2p_go_band(mvm, vif,
2736							NL80211_BAND_5GHZ);
2737	} else {
2738		params->respect_p2p_go = iwl_mvm_get_respect_p2p_go(mvm, vif);
2739	}
2740}
2741
2742int iwl_mvm_reg_scan_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2743			   struct cfg80211_scan_request *req,
2744			   struct ieee80211_scan_ies *ies)
2745{
2746	struct iwl_host_cmd hcmd = {
2747		.len = { iwl_mvm_scan_size(mvm), },
2748		.data = { mvm->scan_cmd, },
2749		.dataflags = { IWL_HCMD_DFL_NOCOPY, },
2750	};
2751	struct iwl_mvm_scan_params params = {};
2752	int ret, uid;
2753	struct cfg80211_sched_scan_plan scan_plan = { .iterations = 1 };
2754
2755	lockdep_assert_held(&mvm->mutex);
2756
2757	if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) {
2758		IWL_ERR(mvm, "scan while LAR regdomain is not set\n");
2759		return -EBUSY;
2760	}
2761
2762	ret = iwl_mvm_check_running_scans(mvm, IWL_MVM_SCAN_REGULAR);
2763	if (ret)
2764		return ret;
2765
2766	/* we should have failed registration if scan_cmd was NULL */
2767	if (WARN_ON(!mvm->scan_cmd))
2768		return -ENOMEM;
2769
2770	if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels))
2771		return -ENOBUFS;
2772
2773	params.n_ssids = req->n_ssids;
2774	params.flags = req->flags;
2775	params.n_channels = req->n_channels;
2776	params.delay = 0;
2777	params.ssids = req->ssids;
2778	params.channels = req->channels;
2779	params.mac_addr = req->mac_addr;
2780	params.mac_addr_mask = req->mac_addr_mask;
2781	params.no_cck = req->no_cck;
2782	params.pass_all = true;
2783	params.n_match_sets = 0;
2784	params.match_sets = NULL;
2785
2786	params.scan_plans = &scan_plan;
2787	params.n_scan_plans = 1;
2788
2789	params.n_6ghz_params = req->n_6ghz_params;
2790	params.scan_6ghz_params = req->scan_6ghz_params;
2791	params.scan_6ghz = req->scan_6ghz;
2792	iwl_mvm_fill_scan_type(mvm, &params, vif);
2793	iwl_mvm_fill_respect_p2p_go(mvm, &params, vif);
2794
2795	if (req->duration)
2796		params.iter_notif = true;
2797
2798	iwl_mvm_build_scan_probe(mvm, vif, ies, &params);
2799
2800	iwl_mvm_scan_6ghz_passive_scan(mvm, &params, vif);
2801
2802	uid = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, &params,
2803				     IWL_MVM_SCAN_REGULAR);
2804
2805	if (uid < 0)
2806		return uid;
2807
2808	iwl_mvm_pause_tcm(mvm, false);
2809
2810	ret = iwl_mvm_send_cmd(mvm, &hcmd);
2811	if (ret) {
2812		/* If the scan failed, it usually means that the FW was unable
2813		 * to allocate the time events. Warn on it, but maybe we
2814		 * should try to send the command again with different params.
2815		 */
2816		IWL_ERR(mvm, "Scan failed! ret %d\n", ret);
2817		iwl_mvm_resume_tcm(mvm);
2818		mvm->scan_uid_status[uid] = 0;
2819		return ret;
2820	}
2821
2822	IWL_DEBUG_SCAN(mvm, "Scan request was sent successfully\n");
2823	mvm->scan_status |= IWL_MVM_SCAN_REGULAR;
2824	mvm->scan_vif = iwl_mvm_vif_from_mac80211(vif);
2825
2826	if (params.enable_6ghz_passive)
2827		mvm->last_6ghz_passive_scan_jiffies = jiffies;
2828
2829	schedule_delayed_work(&mvm->scan_timeout_dwork,
2830			      msecs_to_jiffies(SCAN_TIMEOUT));
2831
2832	return 0;
2833}
2834
2835int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm,
2836			     struct ieee80211_vif *vif,
2837			     struct cfg80211_sched_scan_request *req,
2838			     struct ieee80211_scan_ies *ies,
2839			     int type)
2840{
2841	struct iwl_host_cmd hcmd = {
2842		.len = { iwl_mvm_scan_size(mvm), },
2843		.data = { mvm->scan_cmd, },
2844		.dataflags = { IWL_HCMD_DFL_NOCOPY, },
2845	};
2846	struct iwl_mvm_scan_params params = {};
2847	int ret, uid;
2848	int i, j;
2849	bool non_psc_included = false;
2850
2851	lockdep_assert_held(&mvm->mutex);
2852
2853	if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) {
2854		IWL_ERR(mvm, "sched-scan while LAR regdomain is not set\n");
2855		return -EBUSY;
2856	}
2857
2858	ret = iwl_mvm_check_running_scans(mvm, type);
2859	if (ret)
2860		return ret;
2861
2862	/* we should have failed registration if scan_cmd was NULL */
2863	if (WARN_ON(!mvm->scan_cmd))
2864		return -ENOMEM;
2865
2866
2867	params.n_ssids = req->n_ssids;
2868	params.flags = req->flags;
2869	params.n_channels = req->n_channels;
2870	params.ssids = req->ssids;
2871	params.channels = req->channels;
2872	params.mac_addr = req->mac_addr;
2873	params.mac_addr_mask = req->mac_addr_mask;
2874	params.no_cck = false;
2875	params.pass_all =  iwl_mvm_scan_pass_all(mvm, req);
2876	params.n_match_sets = req->n_match_sets;
2877	params.match_sets = req->match_sets;
2878	if (!req->n_scan_plans)
2879		return -EINVAL;
2880
2881	params.n_scan_plans = req->n_scan_plans;
2882	params.scan_plans = req->scan_plans;
2883
2884	iwl_mvm_fill_scan_type(mvm, &params, vif);
2885	iwl_mvm_fill_respect_p2p_go(mvm, &params, vif);
2886
2887	/* In theory, LMAC scans can handle a 32-bit delay, but since
2888	 * waiting for over 18 hours to start the scan is a bit silly
2889	 * and to keep it aligned with UMAC scans (which only support
2890	 * 16-bit delays), trim it down to 16-bits.
2891	 */
2892	if (req->delay > U16_MAX) {
2893		IWL_DEBUG_SCAN(mvm,
2894			       "delay value is > 16-bits, set to max possible\n");
2895		params.delay = U16_MAX;
2896	} else {
2897		params.delay = req->delay;
2898	}
2899
2900	ret = iwl_mvm_config_sched_scan_profiles(mvm, req);
2901	if (ret)
2902		return ret;
2903
2904	iwl_mvm_build_scan_probe(mvm, vif, ies, &params);
2905
2906	/* for 6 GHZ band only PSC channels need to be added */
2907	for (i = 0; i < params.n_channels; i++) {
2908		struct ieee80211_channel *channel = params.channels[i];
2909
2910		if (channel->band == NL80211_BAND_6GHZ &&
2911		    !cfg80211_channel_is_psc(channel)) {
2912			non_psc_included = true;
2913			break;
2914		}
2915	}
2916
2917	if (non_psc_included) {
2918		params.channels = kmemdup(params.channels,
2919					  sizeof(params.channels[0]) *
2920					  params.n_channels,
2921					  GFP_KERNEL);
2922		if (!params.channels)
2923			return -ENOMEM;
2924
2925		for (i = j = 0; i < params.n_channels; i++) {
2926			if (params.channels[i]->band == NL80211_BAND_6GHZ &&
2927			    !cfg80211_channel_is_psc(params.channels[i]))
2928				continue;
2929			params.channels[j++] = params.channels[i];
2930		}
2931		params.n_channels = j;
2932	}
2933
2934	if (non_psc_included &&
2935	    !iwl_mvm_scan_fits(mvm, req->n_ssids, ies, params.n_channels)) {
2936		kfree(params.channels);
2937		return -ENOBUFS;
2938	}
2939
2940	uid = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, &params, type);
2941
2942	if (non_psc_included)
2943		kfree(params.channels);
2944	if (uid < 0)
2945		return uid;
2946
2947	ret = iwl_mvm_send_cmd(mvm, &hcmd);
2948	if (!ret) {
2949		IWL_DEBUG_SCAN(mvm,
2950			       "Sched scan request was sent successfully\n");
2951		mvm->scan_status |= type;
2952	} else {
2953		/* If the scan failed, it usually means that the FW was unable
2954		 * to allocate the time events. Warn on it, but maybe we
2955		 * should try to send the command again with different params.
2956		 */
2957		IWL_ERR(mvm, "Sched scan failed! ret %d\n", ret);
2958		mvm->scan_uid_status[uid] = 0;
2959		mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
2960	}
2961
2962	return ret;
2963}
2964
2965void iwl_mvm_rx_umac_scan_complete_notif(struct iwl_mvm *mvm,
2966					 struct iwl_rx_cmd_buffer *rxb)
2967{
2968	struct iwl_rx_packet *pkt = rxb_addr(rxb);
2969	struct iwl_umac_scan_complete *notif = (void *)pkt->data;
2970	u32 uid = __le32_to_cpu(notif->uid);
2971	bool aborted = (notif->status == IWL_SCAN_OFFLOAD_ABORTED);
2972
2973	if (WARN_ON(!(mvm->scan_uid_status[uid] & mvm->scan_status)))
2974		return;
2975
2976	/* if the scan is already stopping, we don't need to notify mac80211 */
2977	if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_REGULAR) {
2978		struct cfg80211_scan_info info = {
2979			.aborted = aborted,
2980			.scan_start_tsf = mvm->scan_start,
2981		};
2982
2983		memcpy(info.tsf_bssid, mvm->scan_vif->bssid, ETH_ALEN);
2984		ieee80211_scan_completed(mvm->hw, &info);
2985		mvm->scan_vif = NULL;
2986		cancel_delayed_work(&mvm->scan_timeout_dwork);
2987		iwl_mvm_resume_tcm(mvm);
2988	} else if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_SCHED) {
2989		ieee80211_sched_scan_stopped(mvm->hw);
2990		mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
2991	}
2992
2993	mvm->scan_status &= ~mvm->scan_uid_status[uid];
2994	IWL_DEBUG_SCAN(mvm,
2995		       "Scan completed, uid %u type %u, status %s, EBS status %s\n",
2996		       uid, mvm->scan_uid_status[uid],
2997		       notif->status == IWL_SCAN_OFFLOAD_COMPLETED ?
2998				"completed" : "aborted",
2999		       iwl_mvm_ebs_status_str(notif->ebs_status));
3000	IWL_DEBUG_SCAN(mvm,
3001		       "Last line %d, Last iteration %d, Time from last iteration %d\n",
3002		       notif->last_schedule, notif->last_iter,
3003		       __le32_to_cpu(notif->time_from_last_iter));
3004
3005	if (notif->ebs_status != IWL_SCAN_EBS_SUCCESS &&
3006	    notif->ebs_status != IWL_SCAN_EBS_INACTIVE)
3007		mvm->last_ebs_successful = false;
3008
3009	mvm->scan_uid_status[uid] = 0;
3010}
3011
3012void iwl_mvm_rx_umac_scan_iter_complete_notif(struct iwl_mvm *mvm,
3013					      struct iwl_rx_cmd_buffer *rxb)
3014{
3015	struct iwl_rx_packet *pkt = rxb_addr(rxb);
3016	struct iwl_umac_scan_iter_complete_notif *notif = (void *)pkt->data;
3017
3018	mvm->scan_start = le64_to_cpu(notif->start_tsf);
3019
3020	IWL_DEBUG_SCAN(mvm,
3021		       "UMAC Scan iteration complete: status=0x%x scanned_channels=%d\n",
3022		       notif->status, notif->scanned_channels);
3023
3024	if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) {
3025		IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n");
3026		ieee80211_sched_scan_results(mvm->hw);
3027		mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED;
3028	}
3029
3030	IWL_DEBUG_SCAN(mvm,
3031		       "UMAC Scan iteration complete: scan started at %llu (TSF)\n",
3032		       mvm->scan_start);
3033}
3034
3035static int iwl_mvm_umac_scan_abort(struct iwl_mvm *mvm, int type)
3036{
3037	struct iwl_umac_scan_abort cmd = {};
3038	int uid, ret;
3039
3040	lockdep_assert_held(&mvm->mutex);
3041
3042	/* We should always get a valid index here, because we already
3043	 * checked that this type of scan was running in the generic
3044	 * code.
3045	 */
3046	uid = iwl_mvm_scan_uid_by_status(mvm, type);
3047	if (WARN_ON_ONCE(uid < 0))
3048		return uid;
3049
3050	cmd.uid = cpu_to_le32(uid);
3051
3052	IWL_DEBUG_SCAN(mvm, "Sending scan abort, uid %u\n", uid);
3053
3054	ret = iwl_mvm_send_cmd_pdu(mvm,
3055				   WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_ABORT_UMAC),
3056				   0, sizeof(cmd), &cmd);
3057	if (!ret)
3058		mvm->scan_uid_status[uid] = type << IWL_MVM_SCAN_STOPPING_SHIFT;
3059
3060	return ret;
3061}
3062
3063static int iwl_mvm_scan_stop_wait(struct iwl_mvm *mvm, int type)
3064{
3065	struct iwl_notification_wait wait_scan_done;
3066	static const u16 scan_done_notif[] = { SCAN_COMPLETE_UMAC,
3067					      SCAN_OFFLOAD_COMPLETE, };
3068	int ret;
3069
3070	lockdep_assert_held(&mvm->mutex);
3071
3072	iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_done,
3073				   scan_done_notif,
3074				   ARRAY_SIZE(scan_done_notif),
3075				   NULL, NULL);
3076
3077	IWL_DEBUG_SCAN(mvm, "Preparing to stop scan, type %x\n", type);
3078
3079	if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
3080		ret = iwl_mvm_umac_scan_abort(mvm, type);
3081	else
3082		ret = iwl_mvm_lmac_scan_abort(mvm);
3083
3084	if (ret) {
3085		IWL_DEBUG_SCAN(mvm, "couldn't stop scan type %d\n", type);
3086		iwl_remove_notification(&mvm->notif_wait, &wait_scan_done);
3087		return ret;
3088	}
3089
3090	return iwl_wait_notification(&mvm->notif_wait, &wait_scan_done,
3091				     1 * HZ);
3092}
3093
3094static size_t iwl_scan_req_umac_get_size(u8 scan_ver)
3095{
3096	switch (scan_ver) {
3097	case 12:
3098		return sizeof(struct iwl_scan_req_umac_v12);
3099	case 14:
3100	case 15:
3101		return sizeof(struct iwl_scan_req_umac_v15);
3102	}
3103
3104	return 0;
3105}
3106
3107size_t iwl_mvm_scan_size(struct iwl_mvm *mvm)
3108{
3109	int base_size, tail_size;
3110	u8 scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, SCAN_REQ_UMAC,
3111					    IWL_FW_CMD_VER_UNKNOWN);
3112
3113	base_size = iwl_scan_req_umac_get_size(scan_ver);
3114	if (base_size)
3115		return base_size;
3116
3117
3118	if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm))
3119		base_size = IWL_SCAN_REQ_UMAC_SIZE_V8;
3120	else if (iwl_mvm_is_adaptive_dwell_supported(mvm))
3121		base_size = IWL_SCAN_REQ_UMAC_SIZE_V7;
3122	else if (iwl_mvm_cdb_scan_api(mvm))
3123		base_size = IWL_SCAN_REQ_UMAC_SIZE_V6;
3124	else
3125		base_size = IWL_SCAN_REQ_UMAC_SIZE_V1;
3126
3127	if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
3128		if (iwl_mvm_is_scan_ext_chan_supported(mvm))
3129			tail_size = sizeof(struct iwl_scan_req_umac_tail_v2);
3130		else
3131			tail_size = sizeof(struct iwl_scan_req_umac_tail_v1);
3132
3133		return base_size +
3134			sizeof(struct iwl_scan_channel_cfg_umac) *
3135				mvm->fw->ucode_capa.n_scan_channels +
3136			tail_size;
3137	}
3138	return sizeof(struct iwl_scan_req_lmac) +
3139		sizeof(struct iwl_scan_channel_cfg_lmac) *
3140		mvm->fw->ucode_capa.n_scan_channels +
3141		sizeof(struct iwl_scan_probe_req_v1);
3142}
3143
3144/*
3145 * This function is used in nic restart flow, to inform mac80211 about scans
3146 * that was aborted by restart flow or by an assert.
3147 */
3148void iwl_mvm_report_scan_aborted(struct iwl_mvm *mvm)
3149{
3150	if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
3151		int uid, i;
3152
3153		uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_REGULAR);
3154		if (uid >= 0) {
3155			struct cfg80211_scan_info info = {
3156				.aborted = true,
3157			};
3158
3159			cancel_delayed_work(&mvm->scan_timeout_dwork);
3160
3161			ieee80211_scan_completed(mvm->hw, &info);
3162			mvm->scan_uid_status[uid] = 0;
3163		}
3164		uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_SCHED);
3165		if (uid >= 0) {
3166			/* Sched scan will be restarted by mac80211 in
3167			 * restart_hw, so do not report if FW is about to be
3168			 * restarted.
3169			 */
3170			if (!mvm->fw_restart)
3171				ieee80211_sched_scan_stopped(mvm->hw);
3172			mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
3173			mvm->scan_uid_status[uid] = 0;
3174		}
3175		uid = iwl_mvm_scan_uid_by_status(mvm,
3176						 IWL_MVM_SCAN_STOPPING_REGULAR);
3177		if (uid >= 0)
3178			mvm->scan_uid_status[uid] = 0;
3179
3180		uid = iwl_mvm_scan_uid_by_status(mvm,
3181						 IWL_MVM_SCAN_STOPPING_SCHED);
3182		if (uid >= 0)
3183			mvm->scan_uid_status[uid] = 0;
3184
3185		/* We shouldn't have any UIDs still set.  Loop over all the
3186		 * UIDs to make sure there's nothing left there and warn if
3187		 * any is found.
3188		 */
3189		for (i = 0; i < mvm->max_scans; i++) {
3190			if (WARN_ONCE(mvm->scan_uid_status[i],
3191				      "UMAC scan UID %d status was not cleaned\n",
3192				      i))
3193				mvm->scan_uid_status[i] = 0;
3194		}
3195	} else {
3196		if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) {
3197			struct cfg80211_scan_info info = {
3198				.aborted = true,
3199			};
3200
3201			cancel_delayed_work(&mvm->scan_timeout_dwork);
3202			ieee80211_scan_completed(mvm->hw, &info);
3203		}
3204
3205		/* Sched scan will be restarted by mac80211 in
3206		 * restart_hw, so do not report if FW is about to be
3207		 * restarted.
3208		 */
3209		if ((mvm->scan_status & IWL_MVM_SCAN_SCHED) &&
3210		    !mvm->fw_restart) {
3211			ieee80211_sched_scan_stopped(mvm->hw);
3212			mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
3213		}
3214	}
3215}
3216
3217int iwl_mvm_scan_stop(struct iwl_mvm *mvm, int type, bool notify)
3218{
3219	int ret;
3220
3221	if (!(mvm->scan_status & type))
3222		return 0;
3223
3224	if (iwl_mvm_is_radio_killed(mvm)) {
3225		ret = 0;
3226		goto out;
3227	}
3228
3229	ret = iwl_mvm_scan_stop_wait(mvm, type);
3230	if (!ret)
3231		mvm->scan_status |= type << IWL_MVM_SCAN_STOPPING_SHIFT;
3232out:
3233	/* Clear the scan status so the next scan requests will
3234	 * succeed and mark the scan as stopping, so that the Rx
3235	 * handler doesn't do anything, as the scan was stopped from
3236	 * above.
3237	 */
3238	mvm->scan_status &= ~type;
3239
3240	if (type == IWL_MVM_SCAN_REGULAR) {
3241		cancel_delayed_work(&mvm->scan_timeout_dwork);
3242		if (notify) {
3243			struct cfg80211_scan_info info = {
3244				.aborted = true,
3245			};
3246
3247			ieee80211_scan_completed(mvm->hw, &info);
3248		}
3249	} else if (notify) {
3250		ieee80211_sched_scan_stopped(mvm->hw);
3251		mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
3252	}
3253
3254	return ret;
3255}