scan.c

   1// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
   2/*
   3 * Copyright (C) 2012-2014, 2018-2025 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#include "iwl-utils.h"
  15
  16#define IWL_DENSE_EBS_SCAN_RATIO 5
  17#define IWL_SPARSE_EBS_SCAN_RATIO 1
  18
  19#define IWL_SCAN_DWELL_ACTIVE		10
  20#define IWL_SCAN_DWELL_PASSIVE		110
  21#define IWL_SCAN_DWELL_FRAGMENTED	44
  22#define IWL_SCAN_DWELL_EXTENDED		90
  23#define IWL_SCAN_NUM_OF_FRAGS		3
  24
  25/* adaptive dwell max budget time [TU] for full scan */
  26#define IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN 300
  27/* adaptive dwell max budget time [TU] for directed scan */
  28#define IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN 100
  29/* adaptive dwell default high band APs number */
  30#define IWL_SCAN_ADWELL_DEFAULT_HB_N_APS 8
  31/* adaptive dwell default low band APs number */
  32#define IWL_SCAN_ADWELL_DEFAULT_LB_N_APS 2
  33/* adaptive dwell default APs number in social channels (1, 6, 11) */
  34#define IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL 10
  35/* number of scan channels */
  36#define IWL_SCAN_NUM_CHANNELS 112
  37/* adaptive dwell number of APs override mask for p2p friendly GO */
  38#define IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY_BIT BIT(20)
  39/* adaptive dwell number of APs override mask for social channels */
  40#define IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS_BIT BIT(21)
  41/* adaptive dwell number of APs override for p2p friendly GO channels */
  42#define IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY 10
  43/* adaptive dwell number of APs override for social channels */
  44#define IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS 2
  45
  46/* minimal number of 2GHz and 5GHz channels in the regular scan request */
  47#define IWL_MVM_6GHZ_PASSIVE_SCAN_MIN_CHANS 4
  48
  49/* Number of iterations on the channel for mei filtered scan */
  50#define IWL_MEI_SCAN_NUM_ITER	5U
  51
  52#define WFA_TPC_IE_LEN	9
  53
  54struct iwl_mvm_scan_timing_params {
  55	u32 suspend_time;
  56	u32 max_out_time;
  57};
  58
  59static struct iwl_mvm_scan_timing_params scan_timing[] = {
  60	[IWL_SCAN_TYPE_UNASSOC] = {
  61		.suspend_time = 0,
  62		.max_out_time = 0,
  63	},
  64	[IWL_SCAN_TYPE_WILD] = {
  65		.suspend_time = 30,
  66		.max_out_time = 120,
  67	},
  68	[IWL_SCAN_TYPE_MILD] = {
  69		.suspend_time = 120,
  70		.max_out_time = 120,
  71	},
  72	[IWL_SCAN_TYPE_FRAGMENTED] = {
  73		.suspend_time = 95,
  74		.max_out_time = 44,
  75	},
  76	[IWL_SCAN_TYPE_FAST_BALANCE] = {
  77		.suspend_time = 30,
  78		.max_out_time = 37,
  79	},
  80};
  81
  82struct iwl_mvm_scan_params {
  83	/* For CDB this is low band scan type, for non-CDB - type. */
  84	enum iwl_mvm_scan_type type;
  85	enum iwl_mvm_scan_type hb_type;
  86	u32 n_channels;
  87	u16 delay;
  88	int n_ssids;
  89	struct cfg80211_ssid *ssids;
  90	struct ieee80211_channel **channels;
  91	u32 flags;
  92	u8 *mac_addr;
  93	u8 *mac_addr_mask;
  94	bool no_cck;
  95	bool pass_all;
  96	int n_match_sets;
  97	struct iwl_scan_probe_req preq;
  98	struct cfg80211_match_set *match_sets;
  99	int n_scan_plans;
 100	struct cfg80211_sched_scan_plan *scan_plans;
 101	bool iter_notif;
 102	struct cfg80211_scan_6ghz_params *scan_6ghz_params;
 103	u32 n_6ghz_params;
 104	bool scan_6ghz;
 105	bool enable_6ghz_passive;
 106	bool respect_p2p_go, respect_p2p_go_hb;
 107	s8 tsf_report_link_id;
 108	u8 bssid[ETH_ALEN] __aligned(2);
 109};
 110
 111static inline void *iwl_mvm_get_scan_req_umac_data(struct iwl_mvm *mvm)
 112{
 113	struct iwl_scan_req_umac *cmd = mvm->scan_cmd;
 114
 115	if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm))
 116		return (void *)&cmd->v8.data;
 117
 118	if (iwl_mvm_is_adaptive_dwell_supported(mvm))
 119		return (void *)&cmd->v7.data;
 120
 121	if (iwl_mvm_cdb_scan_api(mvm))
 122		return (void *)&cmd->v6.data;
 123
 124	return (void *)&cmd->v1.data;
 125}
 126
 127static inline struct iwl_scan_umac_chan_param *
 128iwl_mvm_get_scan_req_umac_channel(struct iwl_mvm *mvm)
 129{
 130	struct iwl_scan_req_umac *cmd = mvm->scan_cmd;
 131
 132	if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm))
 133		return &cmd->v8.channel;
 134
 135	if (iwl_mvm_is_adaptive_dwell_supported(mvm))
 136		return &cmd->v7.channel;
 137
 138	if (iwl_mvm_cdb_scan_api(mvm))
 139		return &cmd->v6.channel;
 140
 141	return &cmd->v1.channel;
 142}
 143
 144static u8 iwl_mvm_scan_rx_ant(struct iwl_mvm *mvm)
 145{
 146	if (mvm->scan_rx_ant != ANT_NONE)
 147		return mvm->scan_rx_ant;
 148	return iwl_mvm_get_valid_rx_ant(mvm);
 149}
 150
 151static inline __le16 iwl_mvm_scan_rx_chain(struct iwl_mvm *mvm)
 152{
 153	u16 rx_chain;
 154	u8 rx_ant;
 155
 156	rx_ant = iwl_mvm_scan_rx_ant(mvm);
 157	rx_chain = rx_ant << PHY_RX_CHAIN_VALID_POS;
 158	rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_MIMO_SEL_POS;
 159	rx_chain |= rx_ant << PHY_RX_CHAIN_FORCE_SEL_POS;
 160	rx_chain |= 0x1 << PHY_RX_CHAIN_DRIVER_FORCE_POS;
 161	return cpu_to_le16(rx_chain);
 162}
 163
 164static inline __le32
 165iwl_mvm_scan_rate_n_flags(struct iwl_mvm *mvm, enum nl80211_band band,
 166			  bool no_cck)
 167{
 168	u32 tx_ant;
 169
 170	iwl_mvm_toggle_tx_ant(mvm, &mvm->scan_last_antenna_idx);
 171	tx_ant = BIT(mvm->scan_last_antenna_idx) << RATE_MCS_ANT_POS;
 172
 173	if (band == NL80211_BAND_2GHZ && !no_cck)
 174		return cpu_to_le32(IWL_RATE_1M_PLCP | RATE_MCS_CCK_MSK_V1 |
 175				   tx_ant);
 176	else
 177		return cpu_to_le32(IWL_RATE_6M_PLCP | tx_ant);
 178}
 179
 180static enum iwl_mvm_traffic_load iwl_mvm_get_traffic_load(struct iwl_mvm *mvm)
 181{
 182	return mvm->tcm.result.global_load;
 183}
 184
 185static enum iwl_mvm_traffic_load
 186iwl_mvm_get_traffic_load_band(struct iwl_mvm *mvm, enum nl80211_band band)
 187{
 188	return mvm->tcm.result.band_load[band];
 189}
 190
 191struct iwl_mvm_scan_iter_data {
 192	u32 global_cnt;
 193	struct ieee80211_vif *current_vif;
 194	bool is_dcm_with_p2p_go;
 195};
 196
 197static void iwl_mvm_scan_iterator(void *_data, u8 *mac,
 198				  struct ieee80211_vif *vif)
 199{
 200	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 201	struct iwl_mvm_scan_iter_data *data = _data;
 202	struct iwl_mvm_vif *curr_mvmvif;
 203
 204	if (vif->type != NL80211_IFTYPE_P2P_DEVICE &&
 205	    mvmvif->deflink.phy_ctxt &&
 206	    mvmvif->deflink.phy_ctxt->id < NUM_PHY_CTX)
 207		data->global_cnt += 1;
 208
 209	if (!data->current_vif || vif == data->current_vif)
 210		return;
 211
 212	curr_mvmvif = iwl_mvm_vif_from_mac80211(data->current_vif);
 213
 214	if (ieee80211_vif_type_p2p(vif) == NL80211_IFTYPE_P2P_GO &&
 215	    mvmvif->deflink.phy_ctxt && curr_mvmvif->deflink.phy_ctxt &&
 216	    mvmvif->deflink.phy_ctxt->id != curr_mvmvif->deflink.phy_ctxt->id)
 217		data->is_dcm_with_p2p_go = true;
 218}
 219
 220static enum
 221iwl_mvm_scan_type _iwl_mvm_get_scan_type(struct iwl_mvm *mvm,
 222					 struct ieee80211_vif *vif,
 223					 enum iwl_mvm_traffic_load load,
 224					 bool low_latency)
 225{
 226	struct iwl_mvm_scan_iter_data data = {
 227		.current_vif = vif,
 228		.is_dcm_with_p2p_go = false,
 229		.global_cnt = 0,
 230	};
 231
 232	/*
 233	 * A scanning AP interface probably wants to generate a survey to do
 234	 * ACS (automatic channel selection).
 235	 * Force a non-fragmented scan in that case.
 236	 */
 237	if (vif && ieee80211_vif_type_p2p(vif) == NL80211_IFTYPE_AP)
 238		return IWL_SCAN_TYPE_WILD;
 239
 240	ieee80211_iterate_active_interfaces_atomic(mvm->hw,
 241						   IEEE80211_IFACE_ITER_NORMAL,
 242						   iwl_mvm_scan_iterator,
 243						   &data);
 244
 245	if (!data.global_cnt)
 246		return IWL_SCAN_TYPE_UNASSOC;
 247
 248	if (fw_has_api(&mvm->fw->ucode_capa,
 249		       IWL_UCODE_TLV_API_FRAGMENTED_SCAN)) {
 250		if ((load == IWL_MVM_TRAFFIC_HIGH || low_latency) &&
 251		    (!vif || vif->type != NL80211_IFTYPE_P2P_DEVICE))
 252			return IWL_SCAN_TYPE_FRAGMENTED;
 253
 254		/*
 255		 * in case of DCM with P2P GO set all scan requests as
 256		 * fast-balance scan
 257		 */
 258		if (vif && vif->type == NL80211_IFTYPE_STATION &&
 259		    data.is_dcm_with_p2p_go)
 260			return IWL_SCAN_TYPE_FAST_BALANCE;
 261	}
 262
 263	if (load >= IWL_MVM_TRAFFIC_MEDIUM || low_latency)
 264		return IWL_SCAN_TYPE_MILD;
 265
 266	return IWL_SCAN_TYPE_WILD;
 267}
 268
 269static enum
 270iwl_mvm_scan_type iwl_mvm_get_scan_type(struct iwl_mvm *mvm,
 271					struct ieee80211_vif *vif)
 272{
 273	enum iwl_mvm_traffic_load load;
 274	bool low_latency;
 275
 276	load = iwl_mvm_get_traffic_load(mvm);
 277	low_latency = iwl_mvm_low_latency(mvm);
 278
 279	return _iwl_mvm_get_scan_type(mvm, vif, load, low_latency);
 280}
 281
 282static enum
 283iwl_mvm_scan_type iwl_mvm_get_scan_type_band(struct iwl_mvm *mvm,
 284					     struct ieee80211_vif *vif,
 285					     enum nl80211_band band)
 286{
 287	enum iwl_mvm_traffic_load load;
 288	bool low_latency;
 289
 290	load = iwl_mvm_get_traffic_load_band(mvm, band);
 291	low_latency = iwl_mvm_low_latency_band(mvm, band);
 292
 293	return _iwl_mvm_get_scan_type(mvm, vif, load, low_latency);
 294}
 295
 296static inline bool iwl_mvm_rrm_scan_needed(struct iwl_mvm *mvm)
 297{
 298	/* require rrm scan whenever the fw supports it */
 299	return fw_has_capa(&mvm->fw->ucode_capa,
 300			   IWL_UCODE_TLV_CAPA_DS_PARAM_SET_IE_SUPPORT);
 301}
 302
 303static int iwl_mvm_max_scan_ie_fw_cmd_room(struct iwl_mvm *mvm)
 304{
 305	int max_probe_len;
 306
 307	max_probe_len = SCAN_OFFLOAD_PROBE_REQ_SIZE;
 308
 309	/* we create the 802.11 header SSID element and WFA TPC element */
 310	max_probe_len -= 24 + 2 + WFA_TPC_IE_LEN;
 311
 312	/* DS parameter set element is added on 2.4GHZ band if required */
 313	if (iwl_mvm_rrm_scan_needed(mvm))
 314		max_probe_len -= 3;
 315
 316	return max_probe_len;
 317}
 318
 319int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm)
 320{
 321	int max_ie_len = iwl_mvm_max_scan_ie_fw_cmd_room(mvm);
 322
 323	/* TODO: [BUG] This function should return the maximum allowed size of
 324	 * scan IEs, however the LMAC scan api contains both 2GHZ and 5GHZ IEs
 325	 * in the same command. So the correct implementation of this function
 326	 * is just iwl_mvm_max_scan_ie_fw_cmd_room() / 2. Currently the scan
 327	 * command has only 512 bytes and it would leave us with about 240
 328	 * bytes for scan IEs, which is clearly not enough. So meanwhile
 329	 * we will report an incorrect value. This may result in a failure to
 330	 * issue a scan in unified_scan_lmac and unified_sched_scan_lmac
 331	 * functions with -ENOBUFS, if a large enough probe will be provided.
 332	 */
 333	return max_ie_len;
 334}
 335
 336void iwl_mvm_rx_lmac_scan_iter_complete_notif(struct iwl_mvm *mvm,
 337					      struct iwl_rx_cmd_buffer *rxb)
 338{
 339	struct iwl_rx_packet *pkt = rxb_addr(rxb);
 340	struct iwl_lmac_scan_complete_notif *notif = (void *)pkt->data;
 341
 342	IWL_DEBUG_SCAN(mvm,
 343		       "Scan offload iteration complete: status=0x%x scanned channels=%d\n",
 344		       notif->status, notif->scanned_channels);
 345
 346	if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) {
 347		IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n");
 348		ieee80211_sched_scan_results(mvm->hw);
 349		mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED;
 350	}
 351}
 352
 353void iwl_mvm_rx_scan_match_found(struct iwl_mvm *mvm,
 354				 struct iwl_rx_cmd_buffer *rxb)
 355{
 356	IWL_DEBUG_SCAN(mvm, "Scheduled scan results\n");
 357	ieee80211_sched_scan_results(mvm->hw);
 358}
 359
 360static const char *iwl_mvm_ebs_status_str(enum iwl_scan_ebs_status status)
 361{
 362	switch (status) {
 363	case IWL_SCAN_EBS_SUCCESS:
 364		return "successful";
 365	case IWL_SCAN_EBS_INACTIVE:
 366		return "inactive";
 367	case IWL_SCAN_EBS_FAILED:
 368	case IWL_SCAN_EBS_CHAN_NOT_FOUND:
 369	default:
 370		return "failed";
 371	}
 372}
 373
 374void iwl_mvm_rx_lmac_scan_complete_notif(struct iwl_mvm *mvm,
 375					 struct iwl_rx_cmd_buffer *rxb)
 376{
 377	struct iwl_rx_packet *pkt = rxb_addr(rxb);
 378	struct iwl_periodic_scan_complete *scan_notif = (void *)pkt->data;
 379	bool aborted = (scan_notif->status == IWL_SCAN_OFFLOAD_ABORTED);
 380
 381	/* If this happens, the firmware has mistakenly sent an LMAC
 382	 * notification during UMAC scans -- warn and ignore it.
 383	 */
 384	if (WARN_ON_ONCE(fw_has_capa(&mvm->fw->ucode_capa,
 385				     IWL_UCODE_TLV_CAPA_UMAC_SCAN)))
 386		return;
 387
 388	/* scan status must be locked for proper checking */
 389	lockdep_assert_held(&mvm->mutex);
 390
 391	/* We first check if we were stopping a scan, in which case we
 392	 * just clear the stopping flag.  Then we check if it was a
 393	 * firmware initiated stop, in which case we need to inform
 394	 * mac80211.
 395	 * Note that we can have a stopping and a running scan
 396	 * simultaneously, but we can't have two different types of
 397	 * scans stopping or running at the same time (since LMAC
 398	 * doesn't support it).
 399	 */
 400
 401	if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_SCHED) {
 402		WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR);
 403
 404		IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n",
 405			       aborted ? "aborted" : "completed",
 406			       iwl_mvm_ebs_status_str(scan_notif->ebs_status));
 407		IWL_DEBUG_SCAN(mvm,
 408			       "Last line %d, Last iteration %d, Time after last iteration %d\n",
 409			       scan_notif->last_schedule_line,
 410			       scan_notif->last_schedule_iteration,
 411			       __le32_to_cpu(scan_notif->time_after_last_iter));
 412
 413		mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_SCHED;
 414	} else if (mvm->scan_status & IWL_MVM_SCAN_STOPPING_REGULAR) {
 415		IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s\n",
 416			       aborted ? "aborted" : "completed",
 417			       iwl_mvm_ebs_status_str(scan_notif->ebs_status));
 418
 419		mvm->scan_status &= ~IWL_MVM_SCAN_STOPPING_REGULAR;
 420	} else if (mvm->scan_status & IWL_MVM_SCAN_SCHED) {
 421		WARN_ON_ONCE(mvm->scan_status & IWL_MVM_SCAN_REGULAR);
 422
 423		IWL_DEBUG_SCAN(mvm, "Scheduled scan %s, EBS status %s\n",
 424			       aborted ? "aborted" : "completed",
 425			       iwl_mvm_ebs_status_str(scan_notif->ebs_status));
 426		IWL_DEBUG_SCAN(mvm,
 427			       "Last line %d, Last iteration %d, Time after last iteration %d (FW)\n",
 428			       scan_notif->last_schedule_line,
 429			       scan_notif->last_schedule_iteration,
 430			       __le32_to_cpu(scan_notif->time_after_last_iter));
 431
 432		mvm->scan_status &= ~IWL_MVM_SCAN_SCHED;
 433		ieee80211_sched_scan_stopped(mvm->hw);
 434		mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
 435	} else if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) {
 436		struct cfg80211_scan_info info = {
 437			.aborted = aborted,
 438		};
 439
 440		IWL_DEBUG_SCAN(mvm, "Regular scan %s, EBS status %s (FW)\n",
 441			       aborted ? "aborted" : "completed",
 442			       iwl_mvm_ebs_status_str(scan_notif->ebs_status));
 443
 444		mvm->scan_status &= ~IWL_MVM_SCAN_REGULAR;
 445		ieee80211_scan_completed(mvm->hw, &info);
 446		cancel_delayed_work(&mvm->scan_timeout_dwork);
 447		iwl_mvm_resume_tcm(mvm);
 448	} else {
 449		IWL_ERR(mvm,
 450			"got scan complete notification but no scan is running\n");
 451	}
 452
 453	mvm->last_ebs_successful =
 454			scan_notif->ebs_status == IWL_SCAN_EBS_SUCCESS ||
 455			scan_notif->ebs_status == IWL_SCAN_EBS_INACTIVE;
 456}
 457
 458static int iwl_ssid_exist(u8 *ssid, u8 ssid_len, struct iwl_ssid_ie *ssid_list)
 459{
 460	int i;
 461
 462	for (i = 0; i < PROBE_OPTION_MAX; i++) {
 463		if (!ssid_list[i].len)
 464			break;
 465		if (ssid_list[i].len == ssid_len &&
 466		    !memcmp(ssid_list[i].ssid, ssid, ssid_len))
 467			return i;
 468	}
 469	return -1;
 470}
 471
 472/* We insert the SSIDs in an inverted order, because the FW will
 473 * invert it back.
 474 */
 475static void iwl_scan_build_ssids(struct iwl_mvm_scan_params *params,
 476				 struct iwl_ssid_ie *ssids,
 477				 u32 *ssid_bitmap)
 478{
 479	int i, j;
 480	int index;
 481	u32 tmp_bitmap = 0;
 482
 483	/*
 484	 * copy SSIDs from match list.
 485	 * iwl_config_sched_scan_profiles() uses the order of these ssids to
 486	 * config match list.
 487	 */
 488	for (i = 0, j = params->n_match_sets - 1;
 489	     j >= 0 && i < PROBE_OPTION_MAX;
 490	     i++, j--) {
 491		/* skip empty SSID matchsets */
 492		if (!params->match_sets[j].ssid.ssid_len)
 493			continue;
 494		ssids[i].id = WLAN_EID_SSID;
 495		ssids[i].len = params->match_sets[j].ssid.ssid_len;
 496		memcpy(ssids[i].ssid, params->match_sets[j].ssid.ssid,
 497		       ssids[i].len);
 498	}
 499
 500	/* add SSIDs from scan SSID list */
 501	for (j = params->n_ssids - 1;
 502	     j >= 0 && i < PROBE_OPTION_MAX;
 503	     i++, j--) {
 504		index = iwl_ssid_exist(params->ssids[j].ssid,
 505				       params->ssids[j].ssid_len,
 506				       ssids);
 507		if (index < 0) {
 508			ssids[i].id = WLAN_EID_SSID;
 509			ssids[i].len = params->ssids[j].ssid_len;
 510			memcpy(ssids[i].ssid, params->ssids[j].ssid,
 511			       ssids[i].len);
 512			tmp_bitmap |= BIT(i);
 513		} else {
 514			tmp_bitmap |= BIT(index);
 515		}
 516	}
 517	if (ssid_bitmap)
 518		*ssid_bitmap = tmp_bitmap;
 519}
 520
 521static int
 522iwl_mvm_config_sched_scan_profiles(struct iwl_mvm *mvm,
 523				   struct cfg80211_sched_scan_request *req)
 524{
 525	struct iwl_scan_offload_profile *profile;
 526	struct iwl_scan_offload_profile_cfg_v1 *profile_cfg_v1;
 527	struct iwl_scan_offload_blocklist *blocklist;
 528	struct iwl_scan_offload_profile_cfg_data *data;
 529	int max_profiles = iwl_umac_scan_get_max_profiles(mvm->fw);
 530	int profile_cfg_size = sizeof(*data) +
 531		sizeof(*profile) * max_profiles;
 532	struct iwl_host_cmd cmd = {
 533		.id = SCAN_OFFLOAD_UPDATE_PROFILES_CMD,
 534		.len[1] = profile_cfg_size,
 535		.dataflags[0] = IWL_HCMD_DFL_NOCOPY,
 536		.dataflags[1] = IWL_HCMD_DFL_NOCOPY,
 537	};
 538	int blocklist_len;
 539	int i;
 540	int ret;
 541
 542	if (WARN_ON(req->n_match_sets > max_profiles))
 543		return -EIO;
 544
 545	if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_SHORT_BL)
 546		blocklist_len = IWL_SCAN_SHORT_BLACKLIST_LEN;
 547	else
 548		blocklist_len = IWL_SCAN_MAX_BLACKLIST_LEN;
 549
 550	blocklist = kcalloc(blocklist_len, sizeof(*blocklist), GFP_KERNEL);
 551	if (!blocklist)
 552		return -ENOMEM;
 553
 554	profile_cfg_v1 = kzalloc(profile_cfg_size, GFP_KERNEL);
 555	if (!profile_cfg_v1) {
 556		ret = -ENOMEM;
 557		goto free_blocklist;
 558	}
 559
 560	cmd.data[0] = blocklist;
 561	cmd.len[0] = sizeof(*blocklist) * blocklist_len;
 562	cmd.data[1] = profile_cfg_v1;
 563
 564	/* if max_profile is MAX_PROFILES_V2, we have the new API */
 565	if (max_profiles == IWL_SCAN_MAX_PROFILES_V2) {
 566		struct iwl_scan_offload_profile_cfg *profile_cfg =
 567			(struct iwl_scan_offload_profile_cfg *)profile_cfg_v1;
 568
 569		data = &profile_cfg->data;
 570	} else {
 571		data = &profile_cfg_v1->data;
 572	}
 573
 574	/* No blocklist configuration */
 575	data->num_profiles = req->n_match_sets;
 576	data->active_clients = SCAN_CLIENT_SCHED_SCAN;
 577	data->pass_match = SCAN_CLIENT_SCHED_SCAN;
 578	data->match_notify = SCAN_CLIENT_SCHED_SCAN;
 579
 580	if (!req->n_match_sets || !req->match_sets[0].ssid.ssid_len)
 581		data->any_beacon_notify = SCAN_CLIENT_SCHED_SCAN;
 582
 583	for (i = 0; i < req->n_match_sets; i++) {
 584		profile = &profile_cfg_v1->profiles[i];
 585		profile->ssid_index = i;
 586		/* Support any cipher and auth algorithm */
 587		profile->unicast_cipher = 0xff;
 588		profile->auth_alg = IWL_AUTH_ALGO_UNSUPPORTED |
 589			IWL_AUTH_ALGO_NONE | IWL_AUTH_ALGO_PSK | IWL_AUTH_ALGO_8021X |
 590			IWL_AUTH_ALGO_SAE | IWL_AUTH_ALGO_8021X_SHA384 | IWL_AUTH_ALGO_OWE;
 591		profile->network_type = IWL_NETWORK_TYPE_ANY;
 592		profile->band_selection = IWL_SCAN_OFFLOAD_SELECT_ANY;
 593		profile->client_bitmap = SCAN_CLIENT_SCHED_SCAN;
 594	}
 595
 596	IWL_DEBUG_SCAN(mvm, "Sending scheduled scan profile config\n");
 597
 598	ret = iwl_mvm_send_cmd(mvm, &cmd);
 599	kfree(profile_cfg_v1);
 600free_blocklist:
 601	kfree(blocklist);
 602
 603	return ret;
 604}
 605
 606static bool iwl_mvm_scan_pass_all(struct iwl_mvm *mvm,
 607				  struct cfg80211_sched_scan_request *req)
 608{
 609	if (req->n_match_sets && req->match_sets[0].ssid.ssid_len) {
 610		IWL_DEBUG_SCAN(mvm,
 611			       "Sending scheduled scan with filtering, n_match_sets %d\n",
 612			       req->n_match_sets);
 613		mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
 614		return false;
 615	}
 616
 617	IWL_DEBUG_SCAN(mvm, "Sending Scheduled scan without filtering\n");
 618
 619	mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED;
 620	return true;
 621}
 622
 623static int iwl_mvm_lmac_scan_abort(struct iwl_mvm *mvm)
 624{
 625	int ret;
 626	struct iwl_host_cmd cmd = {
 627		.id = SCAN_OFFLOAD_ABORT_CMD,
 628	};
 629	u32 status = CAN_ABORT_STATUS;
 630
 631	ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status);
 632	if (ret)
 633		return ret;
 634
 635	if (status != CAN_ABORT_STATUS) {
 636		/*
 637		 * The scan abort will return 1 for success or
 638		 * 2 for "failure".  A failure condition can be
 639		 * due to simply not being in an active scan which
 640		 * can occur if we send the scan abort before the
 641		 * microcode has notified us that a scan is completed.
 642		 */
 643		IWL_DEBUG_SCAN(mvm, "SCAN OFFLOAD ABORT ret %d.\n", status);
 644		ret = -ENOENT;
 645	}
 646
 647	return ret;
 648}
 649
 650static void iwl_mvm_scan_fill_tx_cmd(struct iwl_mvm *mvm,
 651				     struct iwl_scan_req_tx_cmd *tx_cmd,
 652				     bool no_cck)
 653{
 654	tx_cmd[0].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL |
 655					 TX_CMD_FLG_BT_DIS);
 656	tx_cmd[0].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm,
 657							   NL80211_BAND_2GHZ,
 658							   no_cck);
 659
 660	if (!iwl_mvm_has_new_station_api(mvm->fw)) {
 661		tx_cmd[0].sta_id = mvm->aux_sta.sta_id;
 662		tx_cmd[1].sta_id = mvm->aux_sta.sta_id;
 663
 664	/*
 665	 * Fw doesn't use this sta anymore, pending deprecation via HOST API
 666	 * change
 667	 */
 668	} else {
 669		tx_cmd[0].sta_id = 0xff;
 670		tx_cmd[1].sta_id = 0xff;
 671	}
 672
 673	tx_cmd[1].tx_flags = cpu_to_le32(TX_CMD_FLG_SEQ_CTL |
 674					 TX_CMD_FLG_BT_DIS);
 675
 676	tx_cmd[1].rate_n_flags = iwl_mvm_scan_rate_n_flags(mvm,
 677							   NL80211_BAND_5GHZ,
 678							   no_cck);
 679}
 680
 681static void
 682iwl_mvm_lmac_scan_cfg_channels(struct iwl_mvm *mvm,
 683			       struct ieee80211_channel **channels,
 684			       int n_channels, u32 ssid_bitmap,
 685			       struct iwl_scan_req_lmac *cmd)
 686{
 687	struct iwl_scan_channel_cfg_lmac *channel_cfg = (void *)&cmd->data;
 688	int i;
 689
 690	for (i = 0; i < n_channels; i++) {
 691		channel_cfg[i].channel_num =
 692			cpu_to_le16(channels[i]->hw_value);
 693		channel_cfg[i].iter_count = cpu_to_le16(1);
 694		channel_cfg[i].iter_interval = 0;
 695		channel_cfg[i].flags =
 696			cpu_to_le32(IWL_UNIFIED_SCAN_CHANNEL_PARTIAL |
 697				    ssid_bitmap);
 698	}
 699}
 700
 701static u8 *iwl_mvm_copy_and_insert_ds_elem(struct iwl_mvm *mvm, const u8 *ies,
 702					   size_t len, u8 *const pos)
 703{
 704	static const u8 before_ds_params[] = {
 705			WLAN_EID_SSID,
 706			WLAN_EID_SUPP_RATES,
 707			WLAN_EID_REQUEST,
 708			WLAN_EID_EXT_SUPP_RATES,
 709	};
 710	size_t offs;
 711	u8 *newpos = pos;
 712
 713	if (!iwl_mvm_rrm_scan_needed(mvm)) {
 714		memcpy(newpos, ies, len);
 715		return newpos + len;
 716	}
 717
 718	offs = ieee80211_ie_split(ies, len,
 719				  before_ds_params,
 720				  ARRAY_SIZE(before_ds_params),
 721				  0);
 722
 723	memcpy(newpos, ies, offs);
 724	newpos += offs;
 725
 726	/* Add a placeholder for DS Parameter Set element */
 727	*newpos++ = WLAN_EID_DS_PARAMS;
 728	*newpos++ = 1;
 729	*newpos++ = 0;
 730
 731	memcpy(newpos, ies + offs, len - offs);
 732	newpos += len - offs;
 733
 734	return newpos;
 735}
 736
 737static void iwl_mvm_add_tpc_report_ie(u8 *pos)
 738{
 739	pos[0] = WLAN_EID_VENDOR_SPECIFIC;
 740	pos[1] = WFA_TPC_IE_LEN - 2;
 741	pos[2] = (WLAN_OUI_MICROSOFT >> 16) & 0xff;
 742	pos[3] = (WLAN_OUI_MICROSOFT >> 8) & 0xff;
 743	pos[4] = WLAN_OUI_MICROSOFT & 0xff;
 744	pos[5] = WLAN_OUI_TYPE_MICROSOFT_TPC;
 745	pos[6] = 0;
 746	/* pos[7] - tx power will be inserted by the FW */
 747	pos[7] = 0;
 748	pos[8] = 0;
 749}
 750
 751static void
 752iwl_mvm_build_scan_probe(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 753			 struct ieee80211_scan_ies *ies,
 754			 struct iwl_mvm_scan_params *params)
 755{
 756	struct ieee80211_mgmt *frame = (void *)params->preq.buf;
 757	u8 *pos, *newpos;
 758	const u8 *mac_addr = params->flags & NL80211_SCAN_FLAG_RANDOM_ADDR ?
 759		params->mac_addr : NULL;
 760
 761	/*
 762	 * Unfortunately, right now the offload scan doesn't support randomising
 763	 * within the firmware, so until the firmware API is ready we implement
 764	 * it in the driver. This means that the scan iterations won't really be
 765	 * random, only when it's restarted, but at least that helps a bit.
 766	 */
 767	if (mac_addr)
 768		get_random_mask_addr(frame->sa, mac_addr,
 769				     params->mac_addr_mask);
 770	else
 771		memcpy(frame->sa, vif->addr, ETH_ALEN);
 772
 773	frame->frame_control = cpu_to_le16(IEEE80211_STYPE_PROBE_REQ);
 774	eth_broadcast_addr(frame->da);
 775	ether_addr_copy(frame->bssid, params->bssid);
 776	frame->seq_ctrl = 0;
 777
 778	pos = frame->u.probe_req.variable;
 779	*pos++ = WLAN_EID_SSID;
 780	*pos++ = 0;
 781
 782	params->preq.mac_header.offset = 0;
 783	params->preq.mac_header.len = cpu_to_le16(24 + 2);
 784
 785	/* Insert ds parameter set element on 2.4 GHz band */
 786	newpos = iwl_mvm_copy_and_insert_ds_elem(mvm,
 787						 ies->ies[NL80211_BAND_2GHZ],
 788						 ies->len[NL80211_BAND_2GHZ],
 789						 pos);
 790	params->preq.band_data[0].offset = cpu_to_le16(pos - params->preq.buf);
 791	params->preq.band_data[0].len = cpu_to_le16(newpos - pos);
 792	pos = newpos;
 793
 794	memcpy(pos, ies->ies[NL80211_BAND_5GHZ],
 795	       ies->len[NL80211_BAND_5GHZ]);
 796	params->preq.band_data[1].offset = cpu_to_le16(pos - params->preq.buf);
 797	params->preq.band_data[1].len =
 798		cpu_to_le16(ies->len[NL80211_BAND_5GHZ]);
 799	pos += ies->len[NL80211_BAND_5GHZ];
 800
 801	memcpy(pos, ies->ies[NL80211_BAND_6GHZ],
 802	       ies->len[NL80211_BAND_6GHZ]);
 803	params->preq.band_data[2].offset = cpu_to_le16(pos - params->preq.buf);
 804	params->preq.band_data[2].len =
 805		cpu_to_le16(ies->len[NL80211_BAND_6GHZ]);
 806	pos += ies->len[NL80211_BAND_6GHZ];
 807	memcpy(pos, ies->common_ies, ies->common_ie_len);
 808	params->preq.common_data.offset = cpu_to_le16(pos - params->preq.buf);
 809
 810	if (iwl_mvm_rrm_scan_needed(mvm) &&
 811	    !fw_has_capa(&mvm->fw->ucode_capa,
 812			 IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT)) {
 813		iwl_mvm_add_tpc_report_ie(pos + ies->common_ie_len);
 814		params->preq.common_data.len = cpu_to_le16(ies->common_ie_len +
 815							   WFA_TPC_IE_LEN);
 816	} else {
 817		params->preq.common_data.len = cpu_to_le16(ies->common_ie_len);
 818	}
 819}
 820
 821static void iwl_mvm_scan_lmac_dwell(struct iwl_mvm *mvm,
 822				    struct iwl_scan_req_lmac *cmd,
 823				    struct iwl_mvm_scan_params *params)
 824{
 825	cmd->active_dwell = IWL_SCAN_DWELL_ACTIVE;
 826	cmd->passive_dwell = IWL_SCAN_DWELL_PASSIVE;
 827	cmd->fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED;
 828	cmd->extended_dwell = IWL_SCAN_DWELL_EXTENDED;
 829	cmd->max_out_time = cpu_to_le32(scan_timing[params->type].max_out_time);
 830	cmd->suspend_time = cpu_to_le32(scan_timing[params->type].suspend_time);
 831	cmd->scan_prio = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
 832}
 833
 834static inline bool iwl_mvm_scan_fits(struct iwl_mvm *mvm, int n_ssids,
 835				     struct ieee80211_scan_ies *ies,
 836				     int n_channels)
 837{
 838	return ((n_ssids <= PROBE_OPTION_MAX) &&
 839		(n_channels <= mvm->fw->ucode_capa.n_scan_channels) &&
 840		(ies->common_ie_len +
 841		 ies->len[NL80211_BAND_2GHZ] + ies->len[NL80211_BAND_5GHZ] +
 842		 ies->len[NL80211_BAND_6GHZ] <=
 843		 iwl_mvm_max_scan_ie_fw_cmd_room(mvm)));
 844}
 845
 846static inline bool iwl_mvm_scan_use_ebs(struct iwl_mvm *mvm,
 847					struct ieee80211_vif *vif)
 848{
 849	const struct iwl_ucode_capabilities *capa = &mvm->fw->ucode_capa;
 850	bool low_latency;
 851
 852	if (iwl_mvm_is_cdb_supported(mvm))
 853		low_latency = iwl_mvm_low_latency_band(mvm, NL80211_BAND_5GHZ);
 854	else
 855		low_latency = iwl_mvm_low_latency(mvm);
 856
 857	/* We can only use EBS if:
 858	 *	1. the feature is supported;
 859	 *	2. the last EBS was successful;
 860	 *	3. if only single scan, the single scan EBS API is supported;
 861	 *	4. it's not a p2p find operation.
 862	 *	5. we are not in low latency mode,
 863	 *	   or if fragmented ebs is supported by the FW
 864	 *	6. the VIF is not an AP interface (scan wants survey results)
 865	 */
 866	return ((capa->flags & IWL_UCODE_TLV_FLAGS_EBS_SUPPORT) &&
 867		mvm->last_ebs_successful && IWL_MVM_ENABLE_EBS &&
 868		vif->type != NL80211_IFTYPE_P2P_DEVICE &&
 869		(!low_latency || iwl_mvm_is_frag_ebs_supported(mvm)) &&
 870		ieee80211_vif_type_p2p(vif) != NL80211_IFTYPE_AP);
 871}
 872
 873static inline bool iwl_mvm_is_regular_scan(struct iwl_mvm_scan_params *params)
 874{
 875	return params->n_scan_plans == 1 &&
 876		params->scan_plans[0].iterations == 1;
 877}
 878
 879static bool iwl_mvm_is_scan_fragmented(enum iwl_mvm_scan_type type)
 880{
 881	return (type == IWL_SCAN_TYPE_FRAGMENTED ||
 882		type == IWL_SCAN_TYPE_FAST_BALANCE);
 883}
 884
 885static int iwl_mvm_scan_lmac_flags(struct iwl_mvm *mvm,
 886				   struct iwl_mvm_scan_params *params,
 887				   struct ieee80211_vif *vif)
 888{
 889	int flags = 0;
 890
 891	if (params->n_ssids == 0)
 892		flags |= IWL_MVM_LMAC_SCAN_FLAG_PASSIVE;
 893
 894	if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0)
 895		flags |= IWL_MVM_LMAC_SCAN_FLAG_PRE_CONNECTION;
 896
 897	if (iwl_mvm_is_scan_fragmented(params->type))
 898		flags |= IWL_MVM_LMAC_SCAN_FLAG_FRAGMENTED;
 899
 900	if (iwl_mvm_rrm_scan_needed(mvm) &&
 901	    fw_has_capa(&mvm->fw->ucode_capa,
 902			IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
 903		flags |= IWL_MVM_LMAC_SCAN_FLAGS_RRM_ENABLED;
 904
 905	if (params->pass_all)
 906		flags |= IWL_MVM_LMAC_SCAN_FLAG_PASS_ALL;
 907	else
 908		flags |= IWL_MVM_LMAC_SCAN_FLAG_MATCH;
 909
 910#ifdef CONFIG_IWLWIFI_DEBUGFS
 911	if (mvm->scan_iter_notif_enabled)
 912		flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE;
 913#endif
 914
 915	if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED)
 916		flags |= IWL_MVM_LMAC_SCAN_FLAG_ITER_COMPLETE;
 917
 918	if (iwl_mvm_is_regular_scan(params) &&
 919	    vif->type != NL80211_IFTYPE_P2P_DEVICE &&
 920	    !iwl_mvm_is_scan_fragmented(params->type))
 921		flags |= IWL_MVM_LMAC_SCAN_FLAG_EXTENDED_DWELL;
 922
 923	return flags;
 924}
 925
 926static void
 927iwl_mvm_scan_set_legacy_probe_req(struct iwl_scan_probe_req_v1 *p_req,
 928				  struct iwl_scan_probe_req *src_p_req)
 929{
 930	int i;
 931
 932	p_req->mac_header = src_p_req->mac_header;
 933	for (i = 0; i < SCAN_NUM_BAND_PROBE_DATA_V_1; i++)
 934		p_req->band_data[i] = src_p_req->band_data[i];
 935	p_req->common_data = src_p_req->common_data;
 936	memcpy(p_req->buf, src_p_req->buf, sizeof(p_req->buf));
 937}
 938
 939static int iwl_mvm_scan_lmac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
 940			     struct iwl_mvm_scan_params *params)
 941{
 942	struct iwl_scan_req_lmac *cmd = mvm->scan_cmd;
 943	struct iwl_scan_probe_req_v1 *preq =
 944		(void *)(cmd->data + sizeof(struct iwl_scan_channel_cfg_lmac) *
 945			 mvm->fw->ucode_capa.n_scan_channels);
 946	u32 ssid_bitmap = 0;
 947	int i;
 948	u8 band;
 949
 950	if (WARN_ON(params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS))
 951		return -EINVAL;
 952
 953	iwl_mvm_scan_lmac_dwell(mvm, cmd, params);
 954
 955	cmd->rx_chain_select = iwl_mvm_scan_rx_chain(mvm);
 956	cmd->iter_num = cpu_to_le32(1);
 957	cmd->n_channels = (u8)params->n_channels;
 958
 959	cmd->delay = cpu_to_le32(params->delay);
 960
 961	cmd->scan_flags = cpu_to_le32(iwl_mvm_scan_lmac_flags(mvm, params,
 962							      vif));
 963
 964	band = iwl_mvm_phy_band_from_nl80211(params->channels[0]->band);
 965	cmd->flags = cpu_to_le32(band);
 966	cmd->filter_flags = cpu_to_le32(MAC_FILTER_ACCEPT_GRP |
 967					MAC_FILTER_IN_BEACON);
 968	iwl_mvm_scan_fill_tx_cmd(mvm, cmd->tx_cmd, params->no_cck);
 969	iwl_scan_build_ssids(params, cmd->direct_scan, &ssid_bitmap);
 970
 971	/* this API uses bits 1-20 instead of 0-19 */
 972	ssid_bitmap <<= 1;
 973
 974	for (i = 0; i < params->n_scan_plans; i++) {
 975		struct cfg80211_sched_scan_plan *scan_plan =
 976			&params->scan_plans[i];
 977
 978		cmd->schedule[i].delay =
 979			cpu_to_le16(scan_plan->interval);
 980		cmd->schedule[i].iterations = scan_plan->iterations;
 981		cmd->schedule[i].full_scan_mul = 1;
 982	}
 983
 984	/*
 985	 * If the number of iterations of the last scan plan is set to
 986	 * zero, it should run infinitely. However, this is not always the case.
 987	 * For example, when regular scan is requested the driver sets one scan
 988	 * plan with one iteration.
 989	 */
 990	if (!cmd->schedule[i - 1].iterations)
 991		cmd->schedule[i - 1].iterations = 0xff;
 992
 993	if (iwl_mvm_scan_use_ebs(mvm, vif)) {
 994		cmd->channel_opt[0].flags =
 995			cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS |
 996				    IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
 997				    IWL_SCAN_CHANNEL_FLAG_CACHE_ADD);
 998		cmd->channel_opt[0].non_ebs_ratio =
 999			cpu_to_le16(IWL_DENSE_EBS_SCAN_RATIO);
1000		cmd->channel_opt[1].flags =
1001			cpu_to_le16(IWL_SCAN_CHANNEL_FLAG_EBS |
1002				    IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
1003				    IWL_SCAN_CHANNEL_FLAG_CACHE_ADD);
1004		cmd->channel_opt[1].non_ebs_ratio =
1005			cpu_to_le16(IWL_SPARSE_EBS_SCAN_RATIO);
1006	}
1007
1008	iwl_mvm_lmac_scan_cfg_channels(mvm, params->channels,
1009				       params->n_channels, ssid_bitmap, cmd);
1010
1011	iwl_mvm_scan_set_legacy_probe_req(preq, &params->preq);
1012
1013	return 0;
1014}
1015
1016static int rate_to_scan_rate_flag(unsigned int rate)
1017{
1018	static const int rate_to_scan_rate[IWL_RATE_COUNT] = {
1019		[IWL_RATE_1M_INDEX]	= SCAN_CONFIG_RATE_1M,
1020		[IWL_RATE_2M_INDEX]	= SCAN_CONFIG_RATE_2M,
1021		[IWL_RATE_5M_INDEX]	= SCAN_CONFIG_RATE_5M,
1022		[IWL_RATE_11M_INDEX]	= SCAN_CONFIG_RATE_11M,
1023		[IWL_RATE_6M_INDEX]	= SCAN_CONFIG_RATE_6M,
1024		[IWL_RATE_9M_INDEX]	= SCAN_CONFIG_RATE_9M,
1025		[IWL_RATE_12M_INDEX]	= SCAN_CONFIG_RATE_12M,
1026		[IWL_RATE_18M_INDEX]	= SCAN_CONFIG_RATE_18M,
1027		[IWL_RATE_24M_INDEX]	= SCAN_CONFIG_RATE_24M,
1028		[IWL_RATE_36M_INDEX]	= SCAN_CONFIG_RATE_36M,
1029		[IWL_RATE_48M_INDEX]	= SCAN_CONFIG_RATE_48M,
1030		[IWL_RATE_54M_INDEX]	= SCAN_CONFIG_RATE_54M,
1031	};
1032
1033	return rate_to_scan_rate[rate];
1034}
1035
1036static __le32 iwl_mvm_scan_config_rates(struct iwl_mvm *mvm)
1037{
1038	struct ieee80211_supported_band *band;
1039	unsigned int rates = 0;
1040	int i;
1041
1042	band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ];
1043	for (i = 0; i < band->n_bitrates; i++)
1044		rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value);
1045	band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ];
1046	for (i = 0; i < band->n_bitrates; i++)
1047		rates |= rate_to_scan_rate_flag(band->bitrates[i].hw_value);
1048
1049	/* Set both basic rates and supported rates */
1050	rates |= SCAN_CONFIG_SUPPORTED_RATE(rates);
1051
1052	return cpu_to_le32(rates);
1053}
1054
1055static void iwl_mvm_fill_scan_dwell(struct iwl_mvm *mvm,
1056				    struct iwl_scan_dwell *dwell)
1057{
1058	dwell->active = IWL_SCAN_DWELL_ACTIVE;
1059	dwell->passive = IWL_SCAN_DWELL_PASSIVE;
1060	dwell->fragmented = IWL_SCAN_DWELL_FRAGMENTED;
1061	dwell->extended = IWL_SCAN_DWELL_EXTENDED;
1062}
1063
1064static void iwl_mvm_fill_channels(struct iwl_mvm *mvm, u8 *channels,
1065				  u32 max_channels)
1066{
1067	struct ieee80211_supported_band *band;
1068	int i, j = 0;
1069
1070	band = &mvm->nvm_data->bands[NL80211_BAND_2GHZ];
1071	for (i = 0; i < band->n_channels && j < max_channels; i++, j++)
1072		channels[j] = band->channels[i].hw_value;
1073	band = &mvm->nvm_data->bands[NL80211_BAND_5GHZ];
1074	for (i = 0; i < band->n_channels && j < max_channels; i++, j++)
1075		channels[j] = band->channels[i].hw_value;
1076}
1077
1078static void iwl_mvm_fill_scan_config_v1(struct iwl_mvm *mvm, void *config,
1079					u32 flags, u8 channel_flags,
1080					u32 max_channels)
1081{
1082	enum iwl_mvm_scan_type type = iwl_mvm_get_scan_type(mvm, NULL);
1083	struct iwl_scan_config_v1 *cfg = config;
1084
1085	cfg->flags = cpu_to_le32(flags);
1086	cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm));
1087	cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm));
1088	cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm);
1089	cfg->out_of_channel_time = cpu_to_le32(scan_timing[type].max_out_time);
1090	cfg->suspend_time = cpu_to_le32(scan_timing[type].suspend_time);
1091
1092	iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell);
1093
1094	memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN);
1095
1096	/* This function should not be called when using ADD_STA ver >=12 */
1097	WARN_ON_ONCE(iwl_mvm_has_new_station_api(mvm->fw));
1098
1099	cfg->bcast_sta_id = mvm->aux_sta.sta_id;
1100	cfg->channel_flags = channel_flags;
1101
1102	iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels);
1103}
1104
1105static void iwl_mvm_fill_scan_config_v2(struct iwl_mvm *mvm, void *config,
1106					u32 flags, u8 channel_flags,
1107					u32 max_channels)
1108{
1109	struct iwl_scan_config_v2 *cfg = config;
1110
1111	cfg->flags = cpu_to_le32(flags);
1112	cfg->tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm));
1113	cfg->rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm));
1114	cfg->legacy_rates = iwl_mvm_scan_config_rates(mvm);
1115
1116	if (iwl_mvm_is_cdb_supported(mvm)) {
1117		enum iwl_mvm_scan_type lb_type, hb_type;
1118
1119		lb_type = iwl_mvm_get_scan_type_band(mvm, NULL,
1120						     NL80211_BAND_2GHZ);
1121		hb_type = iwl_mvm_get_scan_type_band(mvm, NULL,
1122						     NL80211_BAND_5GHZ);
1123
1124		cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] =
1125			cpu_to_le32(scan_timing[lb_type].max_out_time);
1126		cfg->suspend_time[SCAN_LB_LMAC_IDX] =
1127			cpu_to_le32(scan_timing[lb_type].suspend_time);
1128
1129		cfg->out_of_channel_time[SCAN_HB_LMAC_IDX] =
1130			cpu_to_le32(scan_timing[hb_type].max_out_time);
1131		cfg->suspend_time[SCAN_HB_LMAC_IDX] =
1132			cpu_to_le32(scan_timing[hb_type].suspend_time);
1133	} else {
1134		enum iwl_mvm_scan_type type =
1135			iwl_mvm_get_scan_type(mvm, NULL);
1136
1137		cfg->out_of_channel_time[SCAN_LB_LMAC_IDX] =
1138			cpu_to_le32(scan_timing[type].max_out_time);
1139		cfg->suspend_time[SCAN_LB_LMAC_IDX] =
1140			cpu_to_le32(scan_timing[type].suspend_time);
1141	}
1142
1143	iwl_mvm_fill_scan_dwell(mvm, &cfg->dwell);
1144
1145	memcpy(&cfg->mac_addr, &mvm->addresses[0].addr, ETH_ALEN);
1146
1147	/* This function should not be called when using ADD_STA ver >=12 */
1148	WARN_ON_ONCE(iwl_mvm_has_new_station_api(mvm->fw));
1149
1150	cfg->bcast_sta_id = mvm->aux_sta.sta_id;
1151	cfg->channel_flags = channel_flags;
1152
1153	iwl_mvm_fill_channels(mvm, cfg->channel_array, max_channels);
1154}
1155
1156static int iwl_mvm_legacy_config_scan(struct iwl_mvm *mvm)
1157{
1158	void *cfg;
1159	int ret, cmd_size;
1160	struct iwl_host_cmd cmd = {
1161		.id = WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_CFG_CMD),
1162	};
1163	enum iwl_mvm_scan_type type;
1164	enum iwl_mvm_scan_type hb_type = IWL_SCAN_TYPE_NOT_SET;
1165	int num_channels =
1166		mvm->nvm_data->bands[NL80211_BAND_2GHZ].n_channels +
1167		mvm->nvm_data->bands[NL80211_BAND_5GHZ].n_channels;
1168	u32 flags;
1169	u8 channel_flags;
1170
1171	if (WARN_ON(num_channels > mvm->fw->ucode_capa.n_scan_channels))
1172		num_channels = mvm->fw->ucode_capa.n_scan_channels;
1173
1174	if (iwl_mvm_is_cdb_supported(mvm)) {
1175		type = iwl_mvm_get_scan_type_band(mvm, NULL,
1176						  NL80211_BAND_2GHZ);
1177		hb_type = iwl_mvm_get_scan_type_band(mvm, NULL,
1178						     NL80211_BAND_5GHZ);
1179		if (type == mvm->scan_type && hb_type == mvm->hb_scan_type)
1180			return 0;
1181	} else {
1182		type = iwl_mvm_get_scan_type(mvm, NULL);
1183		if (type == mvm->scan_type)
1184			return 0;
1185	}
1186
1187	if (iwl_mvm_cdb_scan_api(mvm))
1188		cmd_size = sizeof(struct iwl_scan_config_v2);
1189	else
1190		cmd_size = sizeof(struct iwl_scan_config_v1);
1191	cmd_size += mvm->fw->ucode_capa.n_scan_channels;
1192
1193	cfg = kzalloc(cmd_size, GFP_KERNEL);
1194	if (!cfg)
1195		return -ENOMEM;
1196
1197	flags = SCAN_CONFIG_FLAG_ACTIVATE |
1198		 SCAN_CONFIG_FLAG_ALLOW_CHUB_REQS |
1199		 SCAN_CONFIG_FLAG_SET_TX_CHAINS |
1200		 SCAN_CONFIG_FLAG_SET_RX_CHAINS |
1201		 SCAN_CONFIG_FLAG_SET_AUX_STA_ID |
1202		 SCAN_CONFIG_FLAG_SET_ALL_TIMES |
1203		 SCAN_CONFIG_FLAG_SET_LEGACY_RATES |
1204		 SCAN_CONFIG_FLAG_SET_MAC_ADDR |
1205		 SCAN_CONFIG_FLAG_SET_CHANNEL_FLAGS |
1206		 SCAN_CONFIG_N_CHANNELS(num_channels) |
1207		 (iwl_mvm_is_scan_fragmented(type) ?
1208		  SCAN_CONFIG_FLAG_SET_FRAGMENTED :
1209		  SCAN_CONFIG_FLAG_CLEAR_FRAGMENTED);
1210
1211	channel_flags = IWL_CHANNEL_FLAG_EBS |
1212			IWL_CHANNEL_FLAG_ACCURATE_EBS |
1213			IWL_CHANNEL_FLAG_EBS_ADD |
1214			IWL_CHANNEL_FLAG_PRE_SCAN_PASSIVE2ACTIVE;
1215
1216	/*
1217	 * Check for fragmented scan on LMAC2 - high band.
1218	 * LMAC1 - low band is checked above.
1219	 */
1220	if (iwl_mvm_cdb_scan_api(mvm)) {
1221		if (iwl_mvm_is_cdb_supported(mvm))
1222			flags |= (iwl_mvm_is_scan_fragmented(hb_type)) ?
1223				 SCAN_CONFIG_FLAG_SET_LMAC2_FRAGMENTED :
1224				 SCAN_CONFIG_FLAG_CLEAR_LMAC2_FRAGMENTED;
1225		iwl_mvm_fill_scan_config_v2(mvm, cfg, flags, channel_flags,
1226					    num_channels);
1227	} else {
1228		iwl_mvm_fill_scan_config_v1(mvm, cfg, flags, channel_flags,
1229					    num_channels);
1230	}
1231
1232	cmd.data[0] = cfg;
1233	cmd.len[0] = cmd_size;
1234	cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
1235
1236	IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n");
1237
1238	ret = iwl_mvm_send_cmd(mvm, &cmd);
1239	if (!ret) {
1240		mvm->scan_type = type;
1241		mvm->hb_scan_type = hb_type;
1242	}
1243
1244	kfree(cfg);
1245	return ret;
1246}
1247
1248int iwl_mvm_config_scan(struct iwl_mvm *mvm)
1249{
1250	struct iwl_scan_config cfg;
1251	struct iwl_host_cmd cmd = {
1252		.id = WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_CFG_CMD),
1253		.len[0] = sizeof(cfg),
1254		.data[0] = &cfg,
1255		.dataflags[0] = IWL_HCMD_DFL_NOCOPY,
1256	};
1257
1258	if (!iwl_mvm_is_reduced_config_scan_supported(mvm))
1259		return iwl_mvm_legacy_config_scan(mvm);
1260
1261	memset(&cfg, 0, sizeof(cfg));
1262
1263	if (!iwl_mvm_has_new_station_api(mvm->fw)) {
1264		cfg.bcast_sta_id = mvm->aux_sta.sta_id;
1265	} else if (iwl_fw_lookup_cmd_ver(mvm->fw, SCAN_CFG_CMD, 0) < 5) {
1266		/*
1267		 * Fw doesn't use this sta anymore. Deprecated on SCAN_CFG_CMD
1268		 * version 5.
1269		 */
1270		cfg.bcast_sta_id = 0xff;
1271	}
1272
1273	cfg.tx_chains = cpu_to_le32(iwl_mvm_get_valid_tx_ant(mvm));
1274	cfg.rx_chains = cpu_to_le32(iwl_mvm_scan_rx_ant(mvm));
1275
1276	IWL_DEBUG_SCAN(mvm, "Sending UMAC scan config\n");
1277
1278	return iwl_mvm_send_cmd(mvm, &cmd);
1279}
1280
1281static int iwl_mvm_scan_uid_by_status(struct iwl_mvm *mvm, int status)
1282{
1283	int i;
1284
1285	for (i = 0; i < mvm->max_scans; i++)
1286		if (mvm->scan_uid_status[i] == status)
1287			return i;
1288
1289	return -ENOENT;
1290}
1291
1292static void iwl_mvm_scan_umac_dwell(struct iwl_mvm *mvm,
1293				    struct iwl_scan_req_umac *cmd,
1294				    struct iwl_mvm_scan_params *params)
1295{
1296	struct iwl_mvm_scan_timing_params *timing, *hb_timing;
1297	u8 active_dwell, passive_dwell;
1298
1299	timing = &scan_timing[params->type];
1300	active_dwell = IWL_SCAN_DWELL_ACTIVE;
1301	passive_dwell = IWL_SCAN_DWELL_PASSIVE;
1302
1303	if (iwl_mvm_is_adaptive_dwell_supported(mvm)) {
1304		cmd->v7.adwell_default_n_aps_social =
1305			IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL;
1306		cmd->v7.adwell_default_n_aps =
1307			IWL_SCAN_ADWELL_DEFAULT_LB_N_APS;
1308
1309		if (iwl_mvm_is_adwell_hb_ap_num_supported(mvm))
1310			cmd->v9.adwell_default_hb_n_aps =
1311				IWL_SCAN_ADWELL_DEFAULT_HB_N_APS;
1312
1313		/* if custom max budget was configured with debugfs */
1314		if (IWL_MVM_ADWELL_MAX_BUDGET)
1315			cmd->v7.adwell_max_budget =
1316				cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET);
1317		else if (params->n_ssids && params->ssids[0].ssid_len)
1318			cmd->v7.adwell_max_budget =
1319				cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN);
1320		else
1321			cmd->v7.adwell_max_budget =
1322				cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN);
1323
1324		cmd->v7.scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1325		cmd->v7.max_out_time[SCAN_LB_LMAC_IDX] =
1326			cpu_to_le32(timing->max_out_time);
1327		cmd->v7.suspend_time[SCAN_LB_LMAC_IDX] =
1328			cpu_to_le32(timing->suspend_time);
1329
1330		if (iwl_mvm_is_cdb_supported(mvm)) {
1331			hb_timing = &scan_timing[params->hb_type];
1332
1333			cmd->v7.max_out_time[SCAN_HB_LMAC_IDX] =
1334				cpu_to_le32(hb_timing->max_out_time);
1335			cmd->v7.suspend_time[SCAN_HB_LMAC_IDX] =
1336				cpu_to_le32(hb_timing->suspend_time);
1337		}
1338
1339		if (!iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) {
1340			cmd->v7.active_dwell = active_dwell;
1341			cmd->v7.passive_dwell = passive_dwell;
1342			cmd->v7.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED;
1343		} else {
1344			cmd->v8.active_dwell[SCAN_LB_LMAC_IDX] = active_dwell;
1345			cmd->v8.passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell;
1346			if (iwl_mvm_is_cdb_supported(mvm)) {
1347				cmd->v8.active_dwell[SCAN_HB_LMAC_IDX] =
1348					active_dwell;
1349				cmd->v8.passive_dwell[SCAN_HB_LMAC_IDX] =
1350					passive_dwell;
1351			}
1352		}
1353	} else {
1354		cmd->v1.extended_dwell = IWL_SCAN_DWELL_EXTENDED;
1355		cmd->v1.active_dwell = active_dwell;
1356		cmd->v1.passive_dwell = passive_dwell;
1357		cmd->v1.fragmented_dwell = IWL_SCAN_DWELL_FRAGMENTED;
1358
1359		if (iwl_mvm_is_cdb_supported(mvm)) {
1360			hb_timing = &scan_timing[params->hb_type];
1361
1362			cmd->v6.max_out_time[SCAN_HB_LMAC_IDX] =
1363					cpu_to_le32(hb_timing->max_out_time);
1364			cmd->v6.suspend_time[SCAN_HB_LMAC_IDX] =
1365					cpu_to_le32(hb_timing->suspend_time);
1366		}
1367
1368		if (iwl_mvm_cdb_scan_api(mvm)) {
1369			cmd->v6.scan_priority =
1370				cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1371			cmd->v6.max_out_time[SCAN_LB_LMAC_IDX] =
1372				cpu_to_le32(timing->max_out_time);
1373			cmd->v6.suspend_time[SCAN_LB_LMAC_IDX] =
1374				cpu_to_le32(timing->suspend_time);
1375		} else {
1376			cmd->v1.scan_priority =
1377				cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1378			cmd->v1.max_out_time =
1379				cpu_to_le32(timing->max_out_time);
1380			cmd->v1.suspend_time =
1381				cpu_to_le32(timing->suspend_time);
1382		}
1383	}
1384
1385	if (iwl_mvm_is_regular_scan(params))
1386		cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1387	else
1388		cmd->ooc_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_2);
1389}
1390
1391static u32 iwl_mvm_scan_umac_ooc_priority(int type)
1392{
1393	if (type == IWL_MVM_SCAN_REGULAR)
1394		return IWL_SCAN_PRIORITY_EXT_6;
1395
1396	return IWL_SCAN_PRIORITY_EXT_2;
1397}
1398
1399static void
1400iwl_mvm_scan_umac_dwell_v11(struct iwl_mvm *mvm,
1401			    struct iwl_scan_general_params_v11 *general_params,
1402			    struct iwl_mvm_scan_params *params)
1403{
1404	struct iwl_mvm_scan_timing_params *timing, *hb_timing;
1405	u8 active_dwell, passive_dwell;
1406
1407	timing = &scan_timing[params->type];
1408	active_dwell = IWL_SCAN_DWELL_ACTIVE;
1409	passive_dwell = IWL_SCAN_DWELL_PASSIVE;
1410
1411	general_params->adwell_default_social_chn =
1412		IWL_SCAN_ADWELL_DEFAULT_N_APS_SOCIAL;
1413	general_params->adwell_default_2g = IWL_SCAN_ADWELL_DEFAULT_LB_N_APS;
1414	general_params->adwell_default_5g = IWL_SCAN_ADWELL_DEFAULT_HB_N_APS;
1415
1416	/* if custom max budget was configured with debugfs */
1417	if (IWL_MVM_ADWELL_MAX_BUDGET)
1418		general_params->adwell_max_budget =
1419			cpu_to_le16(IWL_MVM_ADWELL_MAX_BUDGET);
1420	else if (params->n_ssids && params->ssids[0].ssid_len)
1421		general_params->adwell_max_budget =
1422			cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_DIRECTED_SCAN);
1423	else
1424		general_params->adwell_max_budget =
1425			cpu_to_le16(IWL_SCAN_ADWELL_MAX_BUDGET_FULL_SCAN);
1426
1427	general_params->scan_priority = cpu_to_le32(IWL_SCAN_PRIORITY_EXT_6);
1428	general_params->max_out_of_time[SCAN_LB_LMAC_IDX] =
1429		cpu_to_le32(timing->max_out_time);
1430	general_params->suspend_time[SCAN_LB_LMAC_IDX] =
1431		cpu_to_le32(timing->suspend_time);
1432
1433	hb_timing = &scan_timing[params->hb_type];
1434
1435	general_params->max_out_of_time[SCAN_HB_LMAC_IDX] =
1436		cpu_to_le32(hb_timing->max_out_time);
1437	general_params->suspend_time[SCAN_HB_LMAC_IDX] =
1438		cpu_to_le32(hb_timing->suspend_time);
1439
1440	general_params->active_dwell[SCAN_LB_LMAC_IDX] = active_dwell;
1441	general_params->passive_dwell[SCAN_LB_LMAC_IDX] = passive_dwell;
1442	general_params->active_dwell[SCAN_HB_LMAC_IDX] = active_dwell;
1443	general_params->passive_dwell[SCAN_HB_LMAC_IDX] = passive_dwell;
1444}
1445
1446struct iwl_mvm_scan_channel_segment {
1447	u8 start_idx;
1448	u8 end_idx;
1449	u8 first_channel_id;
1450	u8 last_channel_id;
1451	u8 channel_spacing_shift;
1452	u8 band;
1453};
1454
1455static const struct iwl_mvm_scan_channel_segment scan_channel_segments[] = {
1456	{
1457		.start_idx = 0,
1458		.end_idx = 13,
1459		.first_channel_id = 1,
1460		.last_channel_id = 14,
1461		.channel_spacing_shift = 0,
1462		.band = PHY_BAND_24
1463	},
1464	{
1465		.start_idx = 14,
1466		.end_idx = 41,
1467		.first_channel_id = 36,
1468		.last_channel_id = 144,
1469		.channel_spacing_shift = 2,
1470		.band = PHY_BAND_5
1471	},
1472	{
1473		.start_idx = 42,
1474		.end_idx = 50,
1475		.first_channel_id = 149,
1476		.last_channel_id = 181,
1477		.channel_spacing_shift = 2,
1478		.band = PHY_BAND_5
1479	},
1480	{
1481		.start_idx = 51,
1482		.end_idx = 111,
1483		.first_channel_id = 1,
1484		.last_channel_id = 241,
1485		.channel_spacing_shift = 2,
1486		.band = PHY_BAND_6
1487	},
1488};
1489
1490static int iwl_mvm_scan_ch_and_band_to_idx(u8 channel_id, u8 band)
1491{
1492	int i, index;
1493
1494	if (!channel_id)
1495		return -EINVAL;
1496
1497	for (i = 0; i < ARRAY_SIZE(scan_channel_segments); i++) {
1498		const struct iwl_mvm_scan_channel_segment *ch_segment =
1499			&scan_channel_segments[i];
1500		u32 ch_offset;
1501
1502		if (ch_segment->band != band ||
1503		    ch_segment->first_channel_id > channel_id ||
1504		    ch_segment->last_channel_id < channel_id)
1505			continue;
1506
1507		ch_offset = (channel_id - ch_segment->first_channel_id) >>
1508			ch_segment->channel_spacing_shift;
1509
1510		index = scan_channel_segments[i].start_idx + ch_offset;
1511		if (index < IWL_SCAN_NUM_CHANNELS)
1512			return index;
1513
1514		break;
1515	}
1516
1517	return -EINVAL;
1518}
1519
1520static const u8 p2p_go_friendly_chs[] = {
1521	36, 40, 44, 48, 149, 153, 157, 161, 165,
1522};
1523
1524static const u8 social_chs[] = {
1525	1, 6, 11
1526};
1527
1528static void iwl_mvm_scan_ch_add_n_aps_override(enum nl80211_iftype vif_type,
1529					       u8 ch_id, u8 band, u8 *ch_bitmap,
1530					       size_t bitmap_n_entries)
1531{
1532	int i;
1533
1534	if (vif_type != NL80211_IFTYPE_P2P_DEVICE)
1535		return;
1536
1537	for (i = 0; i < ARRAY_SIZE(p2p_go_friendly_chs); i++) {
1538		if (p2p_go_friendly_chs[i] == ch_id) {
1539			int ch_idx, bitmap_idx;
1540
1541			ch_idx = iwl_mvm_scan_ch_and_band_to_idx(ch_id, band);
1542			if (ch_idx < 0)
1543				return;
1544
1545			bitmap_idx = ch_idx / 8;
1546			if (bitmap_idx >= bitmap_n_entries)
1547				return;
1548
1549			ch_idx = ch_idx % 8;
1550			ch_bitmap[bitmap_idx] |= BIT(ch_idx);
1551
1552			return;
1553		}
1554	}
1555}
1556
1557static u32 iwl_mvm_scan_ch_n_aps_flag(enum nl80211_iftype vif_type, u8 ch_id)
1558{
1559	int i;
1560	u32 flags = 0;
1561
1562	if (vif_type != NL80211_IFTYPE_P2P_DEVICE)
1563		goto out;
1564
1565	for (i = 0; i < ARRAY_SIZE(p2p_go_friendly_chs); i++) {
1566		if (p2p_go_friendly_chs[i] == ch_id) {
1567			flags |= IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY_BIT;
1568			break;
1569		}
1570	}
1571
1572	if (flags)
1573		goto out;
1574
1575	for (i = 0; i < ARRAY_SIZE(social_chs); i++) {
1576		if (social_chs[i] == ch_id) {
1577			flags |= IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS_BIT;
1578			break;
1579		}
1580	}
1581
1582out:
1583	return flags;
1584}
1585
1586static void
1587iwl_mvm_umac_scan_cfg_channels(struct iwl_mvm *mvm,
1588			       struct ieee80211_channel **channels,
1589			       int n_channels, u32 flags,
1590			       struct iwl_scan_channel_cfg_umac *channel_cfg)
1591{
1592	int i;
1593
1594	for (i = 0; i < n_channels; i++) {
1595		channel_cfg[i].flags = cpu_to_le32(flags);
1596		channel_cfg[i].channel_num = channels[i]->hw_value;
1597		if (iwl_mvm_is_scan_ext_chan_supported(mvm)) {
1598			enum nl80211_band band = channels[i]->band;
1599
1600			channel_cfg[i].v2.band =
1601				iwl_mvm_phy_band_from_nl80211(band);
1602			channel_cfg[i].v2.iter_count = 1;
1603			channel_cfg[i].v2.iter_interval = 0;
1604		} else {
1605			channel_cfg[i].v1.iter_count = 1;
1606			channel_cfg[i].v1.iter_interval = 0;
1607		}
1608	}
1609}
1610
1611static void
1612iwl_mvm_umac_scan_cfg_channels_v4(struct iwl_mvm *mvm,
1613				  struct ieee80211_channel **channels,
1614				  struct iwl_scan_channel_params_v4 *cp,
1615				  int n_channels, u32 flags,
1616				  enum nl80211_iftype vif_type)
1617{
1618	u8 *bitmap = cp->adwell_ch_override_bitmap;
1619	size_t bitmap_n_entries = ARRAY_SIZE(cp->adwell_ch_override_bitmap);
1620	int i;
1621
1622	for (i = 0; i < n_channels; i++) {
1623		enum nl80211_band band = channels[i]->band;
1624		struct iwl_scan_channel_cfg_umac *cfg =
1625			&cp->channel_config[i];
1626
1627		cfg->flags = cpu_to_le32(flags);
1628		cfg->channel_num = channels[i]->hw_value;
1629		cfg->v2.band = iwl_mvm_phy_band_from_nl80211(band);
1630		cfg->v2.iter_count = 1;
1631		cfg->v2.iter_interval = 0;
1632
1633		iwl_mvm_scan_ch_add_n_aps_override(vif_type,
1634						   cfg->channel_num,
1635						   cfg->v2.band, bitmap,
1636						   bitmap_n_entries);
1637	}
1638}
1639
1640static void
1641iwl_mvm_umac_scan_cfg_channels_v7(struct iwl_mvm *mvm,
1642				  struct ieee80211_channel **channels,
1643				  struct iwl_scan_channel_params_v7 *cp,
1644				  int n_channels, u32 flags,
1645				  enum nl80211_iftype vif_type, u32 version)
1646{
1647	int i;
1648
1649	for (i = 0; i < n_channels; i++) {
1650		enum nl80211_band band = channels[i]->band;
1651		struct iwl_scan_channel_cfg_umac *cfg = &cp->channel_config[i];
1652		u32 n_aps_flag =
1653			iwl_mvm_scan_ch_n_aps_flag(vif_type,
1654						   channels[i]->hw_value);
1655		u8 iwl_band = iwl_mvm_phy_band_from_nl80211(band);
1656
1657		cfg->flags = cpu_to_le32(flags | n_aps_flag);
1658		cfg->channel_num = channels[i]->hw_value;
1659		if (cfg80211_channel_is_psc(channels[i]))
1660			cfg->flags = 0;
1661
1662		if (band == NL80211_BAND_6GHZ) {
1663			/* 6 GHz channels should only appear in a scan request
1664			 * that has scan_6ghz set. The only exception is MLO
1665			 * scan, which has to be passive.
1666			 */
1667			WARN_ON_ONCE(cfg->flags != 0);
1668			cfg->flags =
1669				cpu_to_le32(IWL_UHB_CHAN_CFG_FLAG_FORCE_PASSIVE);
1670		}
1671
1672		cfg->v2.iter_count = 1;
1673		cfg->v2.iter_interval = 0;
1674		if (version < 17)
1675			cfg->v2.band = iwl_band;
1676		else
1677			cfg->flags |= cpu_to_le32((iwl_band <<
1678						   IWL_CHAN_CFG_FLAGS_BAND_POS));
1679	}
1680}
1681
1682static void
1683iwl_mvm_umac_scan_fill_6g_chan_list(struct iwl_mvm *mvm,
1684				    struct iwl_mvm_scan_params *params,
1685				     struct iwl_scan_probe_params_v4 *pp)
1686{
1687	int j, idex_s = 0, idex_b = 0;
1688	struct cfg80211_scan_6ghz_params *scan_6ghz_params =
1689		params->scan_6ghz_params;
1690	bool hidden_supported = fw_has_capa(&mvm->fw->ucode_capa,
1691					    IWL_UCODE_TLV_CAPA_HIDDEN_6GHZ_SCAN);
1692
1693	for (j = 0; j < params->n_ssids && idex_s < SCAN_SHORT_SSID_MAX_SIZE;
1694	     j++) {
1695		if (!params->ssids[j].ssid_len)
1696			continue;
1697
1698		pp->short_ssid[idex_s] =
1699			cpu_to_le32(~crc32_le(~0, params->ssids[j].ssid,
1700					      params->ssids[j].ssid_len));
1701
1702		if (hidden_supported) {
1703			pp->direct_scan[idex_s].id = WLAN_EID_SSID;
1704			pp->direct_scan[idex_s].len = params->ssids[j].ssid_len;
1705			memcpy(pp->direct_scan[idex_s].ssid, params->ssids[j].ssid,
1706			       params->ssids[j].ssid_len);
1707		}
1708		idex_s++;
1709	}
1710
1711	/*
1712	 * Populate the arrays of the short SSIDs and the BSSIDs using the 6GHz
1713	 * collocated parameters. This might not be optimal, as this processing
1714	 * does not (yet) correspond to the actual channels, so it is possible
1715	 * that some entries would be left out.
1716	 *
1717	 * TODO: improve this logic.
1718	 */
1719	for (j = 0; j < params->n_6ghz_params; j++) {
1720		int k;
1721
1722		/* First, try to place the short SSID */
1723		if (scan_6ghz_params[j].short_ssid_valid) {
1724			for (k = 0; k < idex_s; k++) {
1725				if (pp->short_ssid[k] ==
1726				    cpu_to_le32(scan_6ghz_params[j].short_ssid))
1727					break;
1728			}
1729
1730			if (k == idex_s && idex_s < SCAN_SHORT_SSID_MAX_SIZE) {
1731				pp->short_ssid[idex_s++] =
1732					cpu_to_le32(scan_6ghz_params[j].short_ssid);
1733			}
1734		}
1735
1736		/* try to place BSSID for the same entry */
1737		for (k = 0; k < idex_b; k++) {
1738			if (!memcmp(&pp->bssid_array[k],
1739				    scan_6ghz_params[j].bssid, ETH_ALEN))
1740				break;
1741		}
1742
1743		if (k == idex_b && idex_b < SCAN_BSSID_MAX_SIZE &&
1744		    !WARN_ONCE(!is_valid_ether_addr(scan_6ghz_params[j].bssid),
1745			       "scan: invalid BSSID at index %u, index_b=%u\n",
1746			       j, idex_b)) {
1747			memcpy(&pp->bssid_array[idex_b++],
1748			       scan_6ghz_params[j].bssid, ETH_ALEN);
1749		}
1750	}
1751
1752	pp->short_ssid_num = idex_s;
1753	pp->bssid_num = idex_b;
1754}
1755
1756/* TODO: this function can be merged with iwl_mvm_scan_umac_fill_ch_p_v7 */
1757static u32
1758iwl_mvm_umac_scan_cfg_channels_v7_6g(struct iwl_mvm *mvm,
1759				     struct iwl_mvm_scan_params *params,
1760				     u32 n_channels,
1761				     struct iwl_scan_probe_params_v4 *pp,
1762				     struct iwl_scan_channel_params_v7 *cp,
1763				     enum nl80211_iftype vif_type,
1764				     u32 version)
1765{
1766	int i;
1767	struct cfg80211_scan_6ghz_params *scan_6ghz_params =
1768		params->scan_6ghz_params;
1769	u32 ch_cnt;
1770
1771	for (i = 0, ch_cnt = 0; i < params->n_channels; i++) {
1772		struct iwl_scan_channel_cfg_umac *cfg =
1773			&cp->channel_config[ch_cnt];
1774
1775		u32 s_ssid_bitmap = 0, bssid_bitmap = 0, flags = 0;
1776		u8 k, n_s_ssids = 0, n_bssids = 0;
1777		u8 max_s_ssids, max_bssids;
1778		bool force_passive = false, found = false, allow_passive = true,
1779		     unsolicited_probe_on_chan = false, psc_no_listen = false;
1780		s8 psd_20 = IEEE80211_RNR_TBTT_PARAMS_PSD_RESERVED;
1781
1782		/*
1783		 * Avoid performing passive scan on non PSC channels unless the
1784		 * scan is specifically a passive scan, i.e., no SSIDs
1785		 * configured in the scan command.
1786		 */
1787		if (!cfg80211_channel_is_psc(params->channels[i]) &&
1788		    !params->n_6ghz_params && params->n_ssids)
1789			continue;
1790
1791		cfg->channel_num = params->channels[i]->hw_value;
1792		if (version < 17)
1793			cfg->v2.band = PHY_BAND_6;
1794		else
1795			cfg->flags |= cpu_to_le32(PHY_BAND_6 <<
1796						  IWL_CHAN_CFG_FLAGS_BAND_POS);
1797
1798		cfg->v5.iter_count = 1;
1799		cfg->v5.iter_interval = 0;
1800
1801		for (u32 j = 0; j < params->n_6ghz_params; j++) {
1802			s8 tmp_psd_20;
1803
1804			if (!(scan_6ghz_params[j].channel_idx == i))
1805				continue;
1806
1807			unsolicited_probe_on_chan |=
1808				scan_6ghz_params[j].unsolicited_probe;
1809
1810			/* Use the highest PSD value allowed as advertised by
1811			 * APs for this channel
1812			 */
1813			tmp_psd_20 = scan_6ghz_params[j].psd_20;
1814			if (tmp_psd_20 !=
1815			    IEEE80211_RNR_TBTT_PARAMS_PSD_RESERVED &&
1816			    (psd_20 ==
1817			     IEEE80211_RNR_TBTT_PARAMS_PSD_RESERVED ||
1818			     psd_20 < tmp_psd_20))
1819				psd_20 = tmp_psd_20;
1820
1821			psc_no_listen |= scan_6ghz_params[j].psc_no_listen;
1822		}
1823
1824		/*
1825		 * In the following cases apply passive scan:
1826		 * 1. Non fragmented scan:
1827		 *	- PSC channel with NO_LISTEN_FLAG on should be treated
1828		 *	  like non PSC channel
1829		 *	- Non PSC channel with more than 3 short SSIDs or more
1830		 *	  than 9 BSSIDs.
1831		 *	- Non PSC Channel with unsolicited probe response and
1832		 *	  more than 2 short SSIDs or more than 6 BSSIDs.
1833		 *	- PSC channel with more than 2 short SSIDs or more than
1834		 *	  6 BSSIDs.
1835		 * 3. Fragmented scan:
1836		 *	- PSC channel with more than 1 SSID or 3 BSSIDs.
1837		 *	- Non PSC channel with more than 2 SSIDs or 6 BSSIDs.
1838		 *	- Non PSC channel with unsolicited probe response and
1839		 *	  more than 1 SSID or more than 3 BSSIDs.
1840		 */
1841		if (!iwl_mvm_is_scan_fragmented(params->type)) {
1842			if (!cfg80211_channel_is_psc(params->channels[i]) ||
1843			    psc_no_listen) {
1844				if (unsolicited_probe_on_chan) {
1845					max_s_ssids = 2;
1846					max_bssids = 6;
1847				} else {
1848					max_s_ssids = 3;
1849					max_bssids = 9;
1850				}
1851			} else {
1852				max_s_ssids = 2;
1853				max_bssids = 6;
1854			}
1855		} else if (cfg80211_channel_is_psc(params->channels[i])) {
1856			max_s_ssids = 1;
1857			max_bssids = 3;
1858		} else {
1859			if (unsolicited_probe_on_chan) {
1860				max_s_ssids = 1;
1861				max_bssids = 3;
1862			} else {
1863				max_s_ssids = 2;
1864				max_bssids = 6;
1865			}
1866		}
1867
1868		/*
1869		 * The optimize the scan time, i.e., reduce the scan dwell time
1870		 * on each channel, the below logic tries to set 3 direct BSSID
1871		 * probe requests for each broadcast probe request with a short
1872		 * SSID.
1873		 * TODO: improve this logic
1874		 */
1875		for (u32 j = 0; j < params->n_6ghz_params; j++) {
1876			if (!(scan_6ghz_params[j].channel_idx == i))
1877				continue;
1878
1879			found = false;
1880
1881			for (k = 0;
1882			     k < pp->short_ssid_num && n_s_ssids < max_s_ssids;
1883			     k++) {
1884				if (!scan_6ghz_params[j].unsolicited_probe &&
1885				    le32_to_cpu(pp->short_ssid[k]) ==
1886				    scan_6ghz_params[j].short_ssid) {
1887					/* Relevant short SSID bit set */
1888					if (s_ssid_bitmap & BIT(k)) {
1889						found = true;
1890						break;
1891					}
1892
1893					/*
1894					 * Prefer creating BSSID entries unless
1895					 * the short SSID probe can be done in
1896					 * the same channel dwell iteration.
1897					 *
1898					 * We also need to create a short SSID
1899					 * entry for any hidden AP.
1900					 */
1901					if (3 * n_s_ssids > n_bssids &&
1902					    !pp->direct_scan[k].len)
1903						break;
1904
1905					/* Hidden AP, cannot do passive scan */
1906					if (pp->direct_scan[k].len)
1907						allow_passive = false;
1908
1909					s_ssid_bitmap |= BIT(k);
1910					n_s_ssids++;
1911					found = true;
1912					break;
1913				}
1914			}
1915
1916			if (found)
1917				continue;
1918
1919			for (k = 0; k < pp->bssid_num; k++) {
1920				if (!memcmp(&pp->bssid_array[k],
1921					    scan_6ghz_params[j].bssid,
1922					    ETH_ALEN)) {
1923					if (!(bssid_bitmap & BIT(k))) {
1924						if (n_bssids < max_bssids) {
1925							bssid_bitmap |= BIT(k);
1926							n_bssids++;
1927						} else {
1928							force_passive = TRUE;
1929						}
1930					}
1931					break;
1932				}
1933			}
1934		}
1935
1936		if (cfg80211_channel_is_psc(params->channels[i]) &&
1937		    psc_no_listen)
1938			flags |= IWL_UHB_CHAN_CFG_FLAG_PSC_CHAN_NO_LISTEN;
1939
1940		if (unsolicited_probe_on_chan)
1941			flags |= IWL_UHB_CHAN_CFG_FLAG_UNSOLICITED_PROBE_RES;
1942
1943		if ((allow_passive && force_passive) ||
1944		    (!(bssid_bitmap | s_ssid_bitmap) &&
1945		     !cfg80211_channel_is_psc(params->channels[i])))
1946			flags |= IWL_UHB_CHAN_CFG_FLAG_FORCE_PASSIVE;
1947		else
1948			flags |= bssid_bitmap | (s_ssid_bitmap << 16);
1949
1950		cfg->flags |= cpu_to_le32(flags);
1951		if (version >= 17)
1952			cfg->v5.psd_20 = psd_20;
1953
1954		ch_cnt++;
1955	}
1956
1957	if (params->n_channels > ch_cnt)
1958		IWL_DEBUG_SCAN(mvm,
1959			       "6GHz: reducing number channels: (%u->%u)\n",
1960			       params->n_channels, ch_cnt);
1961
1962	return ch_cnt;
1963}
1964
1965static u8 iwl_mvm_scan_umac_chan_flags_v2(struct iwl_mvm *mvm,
1966					  struct iwl_mvm_scan_params *params,
1967					  struct ieee80211_vif *vif)
1968{
1969	u8 flags = 0;
1970
1971	flags |= IWL_SCAN_CHANNEL_FLAG_ENABLE_CHAN_ORDER;
1972
1973	if (iwl_mvm_scan_use_ebs(mvm, vif))
1974		flags |= IWL_SCAN_CHANNEL_FLAG_EBS |
1975			IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
1976			IWL_SCAN_CHANNEL_FLAG_CACHE_ADD;
1977
1978	/* set fragmented ebs for fragmented scan on HB channels */
1979	if ((!iwl_mvm_is_cdb_supported(mvm) &&
1980	     iwl_mvm_is_scan_fragmented(params->type)) ||
1981	    (iwl_mvm_is_cdb_supported(mvm) &&
1982	     iwl_mvm_is_scan_fragmented(params->hb_type)))
1983		flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG;
1984
1985	/*
1986	 * force EBS in case the scan is a fragmented and there is a need to take P2P
1987	 * GO operation into consideration during scan operation.
1988	 */
1989	if ((!iwl_mvm_is_cdb_supported(mvm) &&
1990	     iwl_mvm_is_scan_fragmented(params->type) && params->respect_p2p_go) ||
1991	    (iwl_mvm_is_cdb_supported(mvm) &&
1992	     iwl_mvm_is_scan_fragmented(params->hb_type) &&
1993	     params->respect_p2p_go_hb)) {
1994		IWL_DEBUG_SCAN(mvm, "Respect P2P GO. Force EBS\n");
1995		flags |= IWL_SCAN_CHANNEL_FLAG_FORCE_EBS;
1996	}
1997
1998	return flags;
1999}
2000
2001static void iwl_mvm_scan_6ghz_passive_scan(struct iwl_mvm *mvm,
2002					   struct iwl_mvm_scan_params *params,
2003					   struct ieee80211_vif *vif)
2004{
2005	struct ieee80211_supported_band *sband =
2006		&mvm->nvm_data->bands[NL80211_BAND_6GHZ];
2007	u32 n_disabled, i;
2008
2009	params->enable_6ghz_passive = false;
2010
2011	if (params->scan_6ghz)
2012		return;
2013
2014	if (!fw_has_capa(&mvm->fw->ucode_capa,
2015			 IWL_UCODE_TLV_CAPA_PASSIVE_6GHZ_SCAN)) {
2016		IWL_DEBUG_SCAN(mvm,
2017			       "6GHz passive scan: Not supported by FW\n");
2018		return;
2019	}
2020
2021	/* 6GHz passive scan allowed only on station interface  */
2022	if (vif->type != NL80211_IFTYPE_STATION) {
2023		IWL_DEBUG_SCAN(mvm,
2024			       "6GHz passive scan: not station interface\n");
2025		return;
2026	}
2027
2028	/*
2029	 * 6GHz passive scan is allowed in a defined time interval following HW
2030	 * reset or resume flow, or while not associated and a large interval
2031	 * has passed since the last 6GHz passive scan.
2032	 */
2033	if ((vif->cfg.assoc ||
2034	     time_after(mvm->last_6ghz_passive_scan_jiffies +
2035			(IWL_MVM_6GHZ_PASSIVE_SCAN_TIMEOUT * HZ), jiffies)) &&
2036	    (time_before(mvm->last_reset_or_resume_time_jiffies +
2037			 (IWL_MVM_6GHZ_PASSIVE_SCAN_ASSOC_TIMEOUT * HZ),
2038			 jiffies))) {
2039		IWL_DEBUG_SCAN(mvm, "6GHz passive scan: %s\n",
2040			       vif->cfg.assoc ? "associated" :
2041			       "timeout did not expire");
2042		return;
2043	}
2044
2045	/* not enough channels in the regular scan request */
2046	if (params->n_channels < IWL_MVM_6GHZ_PASSIVE_SCAN_MIN_CHANS) {
2047		IWL_DEBUG_SCAN(mvm,
2048			       "6GHz passive scan: not enough channels\n");
2049		return;
2050	}
2051
2052	for (i = 0; i < params->n_ssids; i++) {
2053		if (!params->ssids[i].ssid_len)
2054			break;
2055	}
2056
2057	/* not a wildcard scan, so cannot enable passive 6GHz scan */
2058	if (i == params->n_ssids) {
2059		IWL_DEBUG_SCAN(mvm,
2060			       "6GHz passive scan: no wildcard SSID\n");
2061		return;
2062	}
2063
2064	if (!sband || !sband->n_channels) {
2065		IWL_DEBUG_SCAN(mvm,
2066			       "6GHz passive scan: no 6GHz channels\n");
2067		return;
2068	}
2069
2070	for (i = 0, n_disabled = 0; i < sband->n_channels; i++) {
2071		if (sband->channels[i].flags & (IEEE80211_CHAN_DISABLED))
2072			n_disabled++;
2073	}
2074
2075	/*
2076	 * Not all the 6GHz channels are disabled, so no need for 6GHz passive
2077	 * scan
2078	 */
2079	if (n_disabled != sband->n_channels) {
2080		IWL_DEBUG_SCAN(mvm,
2081			       "6GHz passive scan: 6GHz channels enabled\n");
2082		return;
2083	}
2084
2085	/* all conditions to enable 6ghz passive scan are satisfied */
2086	IWL_DEBUG_SCAN(mvm, "6GHz passive scan: can be enabled\n");
2087	params->enable_6ghz_passive = true;
2088}
2089
2090static u16 iwl_mvm_scan_umac_flags_v2(struct iwl_mvm *mvm,
2091				      struct iwl_mvm_scan_params *params,
2092				      struct ieee80211_vif *vif,
2093				      int type)
2094{
2095	u16 flags = 0;
2096
2097	/*
2098	 * If no direct SSIDs are provided perform a passive scan. Otherwise,
2099	 * if there is a single SSID which is not the broadcast SSID, assume
2100	 * that the scan is intended for roaming purposes and thus enable Rx on
2101	 * all chains to improve chances of hearing the beacons/probe responses.
2102	 */
2103	if (params->n_ssids == 0)
2104		flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FORCE_PASSIVE;
2105	else if (params->n_ssids == 1 && params->ssids[0].ssid_len)
2106		flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_USE_ALL_RX_CHAINS;
2107
2108	if (iwl_mvm_is_scan_fragmented(params->type))
2109		flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1;
2110
2111	if (iwl_mvm_is_scan_fragmented(params->hb_type))
2112		flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC2;
2113
2114	if (params->pass_all)
2115		flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PASS_ALL;
2116	else
2117		flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_MATCH;
2118
2119	if (!iwl_mvm_is_regular_scan(params))
2120		flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PERIODIC;
2121
2122	if (params->iter_notif ||
2123	    mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED)
2124		flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_NTFY_ITER_COMPLETE;
2125
2126	if (IWL_MVM_ADWELL_ENABLE)
2127		flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_ADAPTIVE_DWELL;
2128
2129	if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT)
2130		flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_PREEMPTIVE;
2131
2132	if ((type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) &&
2133	    params->flags & NL80211_SCAN_FLAG_COLOCATED_6GHZ)
2134		flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_TRIGGER_UHB_SCAN;
2135
2136	if (params->enable_6ghz_passive)
2137		flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_6GHZ_PASSIVE_SCAN;
2138
2139	if (iwl_mvm_is_oce_supported(mvm) &&
2140	    (params->flags & (NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP |
2141			      NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE |
2142			      NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME)))
2143		flags |= IWL_UMAC_SCAN_GEN_FLAGS_V2_OCE;
2144
2145	return flags;
2146}
2147
2148static u8 iwl_mvm_scan_umac_flags2(struct iwl_mvm *mvm,
2149				   struct iwl_mvm_scan_params *params,
2150				   struct ieee80211_vif *vif, int type,
2151				   u16 gen_flags)
2152{
2153	u8 flags = 0;
2154
2155	if (iwl_mvm_is_cdb_supported(mvm)) {
2156		if (params->respect_p2p_go)
2157			flags |= IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_LB;
2158		if (params->respect_p2p_go_hb)
2159			flags |= IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_HB;
2160	} else {
2161		if (params->respect_p2p_go)
2162			flags = IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_LB |
2163				IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_RESPECT_P2P_GO_HB;
2164	}
2165
2166	if (params->scan_6ghz &&
2167	    fw_has_capa(&mvm->fw->ucode_capa,
2168			IWL_UCODE_TLV_CAPA_SCAN_DONT_TOGGLE_ANT))
2169		flags |= IWL_UMAC_SCAN_GEN_PARAMS_FLAGS2_DONT_TOGGLE_ANT;
2170
2171	/* Passive and AP interface -> ACS (automatic channel selection) */
2172	if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FORCE_PASSIVE &&
2173	    ieee80211_vif_type_p2p(vif) == NL80211_IFTYPE_AP &&
2174	    iwl_fw_lookup_notif_ver(mvm->fw, SCAN_GROUP, CHANNEL_SURVEY_NOTIF,
2175				    0) >= 1)
2176		flags |= IWL_UMAC_SCAN_GEN_FLAGS2_COLLECT_CHANNEL_STATS;
2177
2178	return flags;
2179}
2180
2181static u16 iwl_mvm_scan_umac_flags(struct iwl_mvm *mvm,
2182				   struct iwl_mvm_scan_params *params,
2183				   struct ieee80211_vif *vif)
2184{
2185	u16 flags = 0;
2186
2187	if (params->n_ssids == 0)
2188		flags = IWL_UMAC_SCAN_GEN_FLAGS_PASSIVE;
2189
2190	if (params->n_ssids == 1 && params->ssids[0].ssid_len != 0)
2191		flags |= IWL_UMAC_SCAN_GEN_FLAGS_PRE_CONNECT;
2192
2193	if (iwl_mvm_is_scan_fragmented(params->type))
2194		flags |= IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED;
2195
2196	if (iwl_mvm_is_cdb_supported(mvm) &&
2197	    iwl_mvm_is_scan_fragmented(params->hb_type))
2198		flags |= IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED;
2199
2200	if (iwl_mvm_rrm_scan_needed(mvm) &&
2201	    fw_has_capa(&mvm->fw->ucode_capa,
2202			IWL_UCODE_TLV_CAPA_WFA_TPC_REP_IE_SUPPORT))
2203		flags |= IWL_UMAC_SCAN_GEN_FLAGS_RRM_ENABLED;
2204
2205	if (params->pass_all)
2206		flags |= IWL_UMAC_SCAN_GEN_FLAGS_PASS_ALL;
2207	else
2208		flags |= IWL_UMAC_SCAN_GEN_FLAGS_MATCH;
2209
2210	if (!iwl_mvm_is_regular_scan(params))
2211		flags |= IWL_UMAC_SCAN_GEN_FLAGS_PERIODIC;
2212
2213	if (params->iter_notif)
2214		flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE;
2215
2216#ifdef CONFIG_IWLWIFI_DEBUGFS
2217	if (mvm->scan_iter_notif_enabled)
2218		flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE;
2219#endif
2220
2221	if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED)
2222		flags |= IWL_UMAC_SCAN_GEN_FLAGS_ITER_COMPLETE;
2223
2224	if (iwl_mvm_is_adaptive_dwell_supported(mvm) && IWL_MVM_ADWELL_ENABLE)
2225		flags |= IWL_UMAC_SCAN_GEN_FLAGS_ADAPTIVE_DWELL;
2226
2227	/*
2228	 * Extended dwell is relevant only for low band to start with, as it is
2229	 * being used for social channles only (1, 6, 11), so we can check
2230	 * only scan type on low band also for CDB.
2231	 */
2232	if (iwl_mvm_is_regular_scan(params) &&
2233	    vif->type != NL80211_IFTYPE_P2P_DEVICE &&
2234	    !iwl_mvm_is_scan_fragmented(params->type) &&
2235	    !iwl_mvm_is_adaptive_dwell_supported(mvm) &&
2236	    !iwl_mvm_is_oce_supported(mvm))
2237		flags |= IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL;
2238
2239	if (iwl_mvm_is_oce_supported(mvm)) {
2240		if ((params->flags &
2241		     NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE))
2242			flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_HIGH_TX_RATE;
2243		/* Since IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL and
2244		 * NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION shares
2245		 * the same bit, we need to make sure that we use this bit here
2246		 * only when IWL_UMAC_SCAN_GEN_FLAGS_EXTENDED_DWELL cannot be
2247		 * used. */
2248		if ((params->flags &
2249		     NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) &&
2250		     !WARN_ON_ONCE(!iwl_mvm_is_adaptive_dwell_supported(mvm)))
2251			flags |= IWL_UMAC_SCAN_GEN_FLAGS_PROB_REQ_DEFER_SUPP;
2252		if ((params->flags & NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME))
2253			flags |= IWL_UMAC_SCAN_GEN_FLAGS_MAX_CHNL_TIME;
2254	}
2255
2256	return flags;
2257}
2258
2259static int
2260iwl_mvm_fill_scan_sched_params(struct iwl_mvm_scan_params *params,
2261			       struct iwl_scan_umac_schedule *schedule,
2262			       __le16 *delay)
2263{
2264	int i;
2265	if (WARN_ON(!params->n_scan_plans ||
2266		    params->n_scan_plans > IWL_MAX_SCHED_SCAN_PLANS))
2267		return -EINVAL;
2268
2269	for (i = 0; i < params->n_scan_plans; i++) {
2270		struct cfg80211_sched_scan_plan *scan_plan =
2271			&params->scan_plans[i];
2272
2273		schedule[i].iter_count = scan_plan->iterations;
2274		schedule[i].interval =
2275			cpu_to_le16(scan_plan->interval);
2276	}
2277
2278	/*
2279	 * If the number of iterations of the last scan plan is set to
2280	 * zero, it should run infinitely. However, this is not always the case.
2281	 * For example, when regular scan is requested the driver sets one scan
2282	 * plan with one iteration.
2283	 */
2284	if (!schedule[params->n_scan_plans - 1].iter_count)
2285		schedule[params->n_scan_plans - 1].iter_count = 0xff;
2286
2287	*delay = cpu_to_le16(params->delay);
2288
2289	return 0;
2290}
2291
2292static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2293			     struct iwl_mvm_scan_params *params,
2294			     int type, int uid)
2295{
2296	struct iwl_scan_req_umac *cmd = mvm->scan_cmd;
2297	struct iwl_scan_umac_chan_param *chan_param;
2298	void *cmd_data = iwl_mvm_get_scan_req_umac_data(mvm);
2299	void *sec_part = (u8 *)cmd_data + sizeof(struct iwl_scan_channel_cfg_umac) *
2300		mvm->fw->ucode_capa.n_scan_channels;
2301	struct iwl_scan_req_umac_tail_v2 *tail_v2 =
2302		(struct iwl_scan_req_umac_tail_v2 *)sec_part;
2303	struct iwl_scan_req_umac_tail_v1 *tail_v1;
2304	struct iwl_ssid_ie *direct_scan;
2305	int ret = 0;
2306	u32 ssid_bitmap = 0;
2307	u8 channel_flags = 0;
2308	u16 gen_flags;
2309	struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif);
2310
2311	chan_param = iwl_mvm_get_scan_req_umac_channel(mvm);
2312
2313	iwl_mvm_scan_umac_dwell(mvm, cmd, params);
2314
2315	cmd->uid = cpu_to_le32(uid);
2316	gen_flags = iwl_mvm_scan_umac_flags(mvm, params, vif);
2317	cmd->general_flags = cpu_to_le16(gen_flags);
2318	if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm)) {
2319		if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED)
2320			cmd->v8.num_of_fragments[SCAN_LB_LMAC_IDX] =
2321							IWL_SCAN_NUM_OF_FRAGS;
2322		if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED)
2323			cmd->v8.num_of_fragments[SCAN_HB_LMAC_IDX] =
2324							IWL_SCAN_NUM_OF_FRAGS;
2325
2326		cmd->v8.general_flags2 =
2327			IWL_UMAC_SCAN_GEN_FLAGS2_ALLOW_CHNL_REORDER;
2328	}
2329
2330	cmd->scan_start_mac_id = scan_vif->id;
2331
2332	if (type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT)
2333		cmd->flags = cpu_to_le32(IWL_UMAC_SCAN_FLAG_PREEMPTIVE);
2334
2335	if (iwl_mvm_scan_use_ebs(mvm, vif)) {
2336		channel_flags = IWL_SCAN_CHANNEL_FLAG_EBS |
2337				IWL_SCAN_CHANNEL_FLAG_EBS_ACCURATE |
2338				IWL_SCAN_CHANNEL_FLAG_CACHE_ADD;
2339
2340		/* set fragmented ebs for fragmented scan on HB channels */
2341		if (iwl_mvm_is_frag_ebs_supported(mvm)) {
2342			if (gen_flags &
2343			    IWL_UMAC_SCAN_GEN_FLAGS_LMAC2_FRAGMENTED ||
2344			    (!iwl_mvm_is_cdb_supported(mvm) &&
2345			     gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_FRAGMENTED))
2346				channel_flags |= IWL_SCAN_CHANNEL_FLAG_EBS_FRAG;
2347		}
2348	}
2349
2350	chan_param->flags = channel_flags;
2351	chan_param->count = params->n_channels;
2352
2353	ret = iwl_mvm_fill_scan_sched_params(params, tail_v2->schedule,
2354					     &tail_v2->delay);
2355	if (ret)
2356		return ret;
2357
2358	if (iwl_mvm_is_scan_ext_chan_supported(mvm)) {
2359		tail_v2->preq = params->preq;
2360		direct_scan = tail_v2->direct_scan;
2361	} else {
2362		tail_v1 = (struct iwl_scan_req_umac_tail_v1 *)sec_part;
2363		iwl_mvm_scan_set_legacy_probe_req(&tail_v1->preq,
2364						  &params->preq);
2365		direct_scan = tail_v1->direct_scan;
2366	}
2367	iwl_scan_build_ssids(params, direct_scan, &ssid_bitmap);
2368	iwl_mvm_umac_scan_cfg_channels(mvm, params->channels,
2369				       params->n_channels, ssid_bitmap,
2370				       cmd_data);
2371	return 0;
2372}
2373
2374static void
2375iwl_mvm_scan_umac_fill_general_p_v12(struct iwl_mvm *mvm,
2376				     struct iwl_mvm_scan_params *params,
2377				     struct ieee80211_vif *vif,
2378				     struct iwl_scan_general_params_v11 *gp,
2379				     u16 gen_flags, u8 gen_flags2,
2380				     u32 version)
2381{
2382	struct iwl_mvm_vif *scan_vif = iwl_mvm_vif_from_mac80211(vif);
2383
2384	iwl_mvm_scan_umac_dwell_v11(mvm, gp, params);
2385
2386	IWL_DEBUG_SCAN(mvm, "General: flags=0x%x, flags2=0x%x\n",
2387		       gen_flags, gen_flags2);
2388
2389	gp->flags = cpu_to_le16(gen_flags);
2390	gp->flags2 = gen_flags2;
2391
2392	if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC1)
2393		gp->num_of_fragments[SCAN_LB_LMAC_IDX] = IWL_SCAN_NUM_OF_FRAGS;
2394	if (gen_flags & IWL_UMAC_SCAN_GEN_FLAGS_V2_FRAGMENTED_LMAC2)
2395		gp->num_of_fragments[SCAN_HB_LMAC_IDX] = IWL_SCAN_NUM_OF_FRAGS;
2396
2397	mvm->scan_link_id = 0;
2398
2399	if (version < 16) {
2400		gp->scan_start_mac_or_link_id = scan_vif->id;
2401	} else {
2402		struct iwl_mvm_vif_link_info *link_info =
2403			scan_vif->link[params->tsf_report_link_id];
2404
2405		mvm->scan_link_id = params->tsf_report_link_id;
2406		if (!WARN_ON(!link_info))
2407			gp->scan_start_mac_or_link_id = link_info->fw_link_id;
2408	}
2409}
2410
2411static void
2412iwl_mvm_scan_umac_fill_probe_p_v3(struct iwl_mvm_scan_params *params,
2413				  struct iwl_scan_probe_params_v3 *pp)
2414{
2415	pp->preq = params->preq;
2416	pp->ssid_num = params->n_ssids;
2417	iwl_scan_build_ssids(params, pp->direct_scan, NULL);
2418}
2419
2420static void
2421iwl_mvm_scan_umac_fill_probe_p_v4(struct iwl_mvm_scan_params *params,
2422				  struct iwl_scan_probe_params_v4 *pp,
2423				  u32 *bitmap_ssid)
2424{
2425	pp->preq = params->preq;
2426	iwl_scan_build_ssids(params, pp->direct_scan, bitmap_ssid);
2427}
2428
2429static void
2430iwl_mvm_scan_umac_fill_ch_p_v4(struct iwl_mvm *mvm,
2431			       struct iwl_mvm_scan_params *params,
2432			       struct ieee80211_vif *vif,
2433			       struct iwl_scan_channel_params_v4 *cp,
2434			       u32 channel_cfg_flags)
2435{
2436	cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif);
2437	cp->count = params->n_channels;
2438	cp->num_of_aps_override = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY;
2439
2440	iwl_mvm_umac_scan_cfg_channels_v4(mvm, params->channels, cp,
2441					  params->n_channels,
2442					  channel_cfg_flags,
2443					  vif->type);
2444}
2445
2446static void
2447iwl_mvm_scan_umac_fill_ch_p_v7(struct iwl_mvm *mvm,
2448			       struct iwl_mvm_scan_params *params,
2449			       struct ieee80211_vif *vif,
2450			       struct iwl_scan_channel_params_v7 *cp,
2451			       u32 channel_cfg_flags,
2452			       u32 version)
2453{
2454	cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif);
2455	cp->count = params->n_channels;
2456	cp->n_aps_override[0] = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY;
2457	cp->n_aps_override[1] = IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS;
2458
2459	iwl_mvm_umac_scan_cfg_channels_v7(mvm, params->channels, cp,
2460					  params->n_channels,
2461					  channel_cfg_flags,
2462					  vif->type, version);
2463
2464	if (params->enable_6ghz_passive) {
2465		struct ieee80211_supported_band *sband =
2466			&mvm->nvm_data->bands[NL80211_BAND_6GHZ];
2467		u32 i;
2468
2469		for (i = 0; i < sband->n_channels; i++) {
2470			struct ieee80211_channel *channel =
2471				&sband->channels[i];
2472
2473			struct iwl_scan_channel_cfg_umac *cfg =
2474				&cp->channel_config[cp->count];
2475
2476			if (!cfg80211_channel_is_psc(channel))
2477				continue;
2478
2479			cfg->channel_num = channel->hw_value;
2480			cfg->v5.iter_count = 1;
2481			cfg->v5.iter_interval = 0;
2482
2483			if (version < 17) {
2484				cfg->flags = 0;
2485				cfg->v2.band = PHY_BAND_6;
2486			} else {
2487				cfg->flags = cpu_to_le32(PHY_BAND_6 <<
2488							 IWL_CHAN_CFG_FLAGS_BAND_POS);
2489				cfg->v5.psd_20 =
2490					IEEE80211_RNR_TBTT_PARAMS_PSD_RESERVED;
2491			}
2492			cp->count++;
2493		}
2494	}
2495}
2496
2497static int iwl_mvm_scan_umac_v12(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2498				 struct iwl_mvm_scan_params *params, int type,
2499				 int uid)
2500{
2501	struct iwl_scan_req_umac_v12 *cmd = mvm->scan_cmd;
2502	struct iwl_scan_req_params_v12 *scan_p = &cmd->scan_params;
2503	int ret;
2504	u16 gen_flags;
2505
2506	cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(type));
2507	cmd->uid = cpu_to_le32(uid);
2508
2509	gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type);
2510	iwl_mvm_scan_umac_fill_general_p_v12(mvm, params, vif,
2511					     &scan_p->general_params,
2512					     gen_flags, 0, 12);
2513
2514	ret = iwl_mvm_fill_scan_sched_params(params,
2515					     scan_p->periodic_params.schedule,
2516					     &scan_p->periodic_params.delay);
2517	if (ret)
2518		return ret;
2519
2520	iwl_mvm_scan_umac_fill_probe_p_v3(params, &scan_p->probe_params);
2521	iwl_mvm_scan_umac_fill_ch_p_v4(mvm, params, vif,
2522				       &scan_p->channel_params, 0);
2523
2524	return 0;
2525}
2526
2527static int iwl_mvm_scan_umac_v14_and_above(struct iwl_mvm *mvm,
2528					   struct ieee80211_vif *vif,
2529					   struct iwl_mvm_scan_params *params,
2530					   int type, int uid, u32 version)
2531{
2532	struct iwl_scan_req_umac_v17 *cmd = mvm->scan_cmd;
2533	struct iwl_scan_req_params_v17 *scan_p = &cmd->scan_params;
2534	struct iwl_scan_channel_params_v7 *cp = &scan_p->channel_params;
2535	struct iwl_scan_probe_params_v4 *pb = &scan_p->probe_params;
2536	int ret;
2537	u16 gen_flags;
2538	u8 gen_flags2;
2539	u32 bitmap_ssid = 0;
2540
2541	cmd->ooc_priority = cpu_to_le32(iwl_mvm_scan_umac_ooc_priority(type));
2542	cmd->uid = cpu_to_le32(uid);
2543
2544	gen_flags = iwl_mvm_scan_umac_flags_v2(mvm, params, vif, type);
2545
2546	if (version >= 15)
2547		gen_flags2 = iwl_mvm_scan_umac_flags2(mvm, params, vif, type,
2548						      gen_flags);
2549	else
2550		gen_flags2 = 0;
2551
2552	iwl_mvm_scan_umac_fill_general_p_v12(mvm, params, vif,
2553					     &scan_p->general_params,
2554					     gen_flags, gen_flags2, version);
2555
2556	ret = iwl_mvm_fill_scan_sched_params(params,
2557					     scan_p->periodic_params.schedule,
2558					     &scan_p->periodic_params.delay);
2559	if (ret)
2560		return ret;
2561
2562	if (!params->scan_6ghz) {
2563		iwl_mvm_scan_umac_fill_probe_p_v4(params,
2564						  &scan_p->probe_params,
2565						  &bitmap_ssid);
2566		iwl_mvm_scan_umac_fill_ch_p_v7(mvm, params, vif,
2567					       &scan_p->channel_params,
2568					       bitmap_ssid,
2569					       version);
2570		return 0;
2571	} else {
2572		pb->preq = params->preq;
2573	}
2574
2575	cp->flags = iwl_mvm_scan_umac_chan_flags_v2(mvm, params, vif);
2576	cp->n_aps_override[0] = IWL_SCAN_ADWELL_N_APS_GO_FRIENDLY;
2577	cp->n_aps_override[1] = IWL_SCAN_ADWELL_N_APS_SOCIAL_CHS;
2578
2579	iwl_mvm_umac_scan_fill_6g_chan_list(mvm, params, pb);
2580
2581	cp->count = iwl_mvm_umac_scan_cfg_channels_v7_6g(mvm, params,
2582							 params->n_channels,
2583							 pb, cp, vif->type,
2584							 version);
2585	if (!cp->count)
2586		return -EINVAL;
2587
2588	if (!params->n_ssids ||
2589	    (params->n_ssids == 1 && !params->ssids[0].ssid_len))
2590		cp->flags |= IWL_SCAN_CHANNEL_FLAG_6G_PSC_NO_FILTER;
2591
2592	return 0;
2593}
2594
2595static int iwl_mvm_scan_umac_v14(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2596				 struct iwl_mvm_scan_params *params, int type,
2597				 int uid)
2598{
2599	return iwl_mvm_scan_umac_v14_and_above(mvm, vif, params, type, uid, 14);
2600}
2601
2602static int iwl_mvm_scan_umac_v15(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2603				 struct iwl_mvm_scan_params *params, int type,
2604				 int uid)
2605{
2606	return iwl_mvm_scan_umac_v14_and_above(mvm, vif, params, type, uid, 15);
2607}
2608
2609static int iwl_mvm_scan_umac_v16(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2610				 struct iwl_mvm_scan_params *params, int type,
2611				 int uid)
2612{
2613	return iwl_mvm_scan_umac_v14_and_above(mvm, vif, params, type, uid, 16);
2614}
2615
2616static int iwl_mvm_scan_umac_v17(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2617				 struct iwl_mvm_scan_params *params, int type,
2618				 int uid)
2619{
2620	return iwl_mvm_scan_umac_v14_and_above(mvm, vif, params, type, uid, 17);
2621}
2622
2623static int iwl_mvm_num_scans(struct iwl_mvm *mvm)
2624{
2625	return hweight32(mvm->scan_status & IWL_MVM_SCAN_MASK);
2626}
2627
2628static int iwl_mvm_check_running_scans(struct iwl_mvm *mvm, int type)
2629{
2630	bool unified_image = fw_has_capa(&mvm->fw->ucode_capa,
2631					 IWL_UCODE_TLV_CAPA_CNSLDTD_D3_D0_IMG);
2632
2633	/* This looks a bit arbitrary, but the idea is that if we run
2634	 * out of possible simultaneous scans and the userspace is
2635	 * trying to run a scan type that is already running, we
2636	 * return -EBUSY.  But if the userspace wants to start a
2637	 * different type of scan, we stop the opposite type to make
2638	 * space for the new request.  The reason is backwards
2639	 * compatibility with old wpa_supplicant that wouldn't stop a
2640	 * scheduled scan before starting a normal scan.
2641	 */
2642
2643	/* FW supports only a single periodic scan */
2644	if ((type == IWL_MVM_SCAN_SCHED || type == IWL_MVM_SCAN_NETDETECT) &&
2645	    mvm->scan_status & (IWL_MVM_SCAN_SCHED | IWL_MVM_SCAN_NETDETECT))
2646		return -EBUSY;
2647
2648	if (iwl_mvm_num_scans(mvm) < mvm->max_scans)
2649		return 0;
2650
2651	/* Use a switch, even though this is a bitmask, so that more
2652	 * than one bits set will fall in default and we will warn.
2653	 */
2654	switch (type) {
2655	case IWL_MVM_SCAN_REGULAR:
2656		if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK)
2657			return -EBUSY;
2658		return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED, true);
2659	case IWL_MVM_SCAN_SCHED:
2660		if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK)
2661			return -EBUSY;
2662		return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR, true);
2663	case IWL_MVM_SCAN_NETDETECT:
2664		/* For non-unified images, there's no need to stop
2665		 * anything for net-detect since the firmware is
2666		 * restarted anyway.  This way, any sched scans that
2667		 * were running will be restarted when we resume.
2668		 */
2669		if (!unified_image)
2670			return 0;
2671
2672		/* If this is a unified image and we ran out of scans,
2673		 * we need to stop something.  Prefer stopping regular
2674		 * scans, because the results are useless at this
2675		 * point, and we should be able to keep running
2676		 * another scheduled scan while suspended.
2677		 */
2678		if (mvm->scan_status & IWL_MVM_SCAN_REGULAR_MASK)
2679			return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_REGULAR,
2680						 true);
2681		if (mvm->scan_status & IWL_MVM_SCAN_SCHED_MASK)
2682			return iwl_mvm_scan_stop(mvm, IWL_MVM_SCAN_SCHED,
2683						 true);
2684		/* Something is wrong if no scan was running but we
2685		 * ran out of scans.
2686		 */
2687		fallthrough;
2688	default:
2689		WARN_ON(1);
2690		break;
2691	}
2692
2693	return -EIO;
2694}
2695
2696#define SCAN_TIMEOUT 30000
2697
2698void iwl_mvm_scan_timeout_wk(struct work_struct *work)
2699{
2700	struct delayed_work *delayed_work = to_delayed_work(work);
2701	struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm,
2702					   scan_timeout_dwork);
2703
2704	IWL_ERR(mvm, "regular scan timed out\n");
2705
2706	iwl_force_nmi(mvm->trans);
2707}
2708
2709static void iwl_mvm_fill_scan_type(struct iwl_mvm *mvm,
2710				   struct iwl_mvm_scan_params *params,
2711				   struct ieee80211_vif *vif)
2712{
2713	if (iwl_mvm_is_cdb_supported(mvm)) {
2714		params->type =
2715			iwl_mvm_get_scan_type_band(mvm, vif,
2716						   NL80211_BAND_2GHZ);
2717		params->hb_type =
2718			iwl_mvm_get_scan_type_band(mvm, vif,
2719						   NL80211_BAND_5GHZ);
2720	} else {
2721		params->type = iwl_mvm_get_scan_type(mvm, vif);
2722	}
2723}
2724
2725struct iwl_scan_umac_handler {
2726	u8 version;
2727	int (*handler)(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
2728		       struct iwl_mvm_scan_params *params, int type, int uid);
2729};
2730
2731#define IWL_SCAN_UMAC_HANDLER(_ver) {		\
2732	.version = _ver,			\
2733	.handler = iwl_mvm_scan_umac_v##_ver,	\
2734}
2735
2736static const struct iwl_scan_umac_handler iwl_scan_umac_handlers[] = {
2737	/* set the newest version first to shorten the list traverse time */
2738	IWL_SCAN_UMAC_HANDLER(17),
2739	IWL_SCAN_UMAC_HANDLER(16),
2740	IWL_SCAN_UMAC_HANDLER(15),
2741	IWL_SCAN_UMAC_HANDLER(14),
2742	IWL_SCAN_UMAC_HANDLER(12),
2743};
2744
2745static void iwl_mvm_mei_scan_work(struct work_struct *wk)
2746{
2747	struct iwl_mei_scan_filter *scan_filter =
2748		container_of(wk, struct iwl_mei_scan_filter, scan_work);
2749	struct iwl_mvm *mvm =
2750		container_of(scan_filter, struct iwl_mvm, mei_scan_filter);
2751	struct iwl_mvm_csme_conn_info *info;
2752	struct sk_buff *skb;
2753	u8 bssid[ETH_ALEN];
2754
2755	mutex_lock(&mvm->mutex);
2756	info = iwl_mvm_get_csme_conn_info(mvm);
2757	memcpy(bssid, info->conn_info.bssid, ETH_ALEN);
2758	mutex_unlock(&mvm->mutex);
2759
2760	while ((skb = skb_dequeue(&scan_filter->scan_res))) {
2761		struct ieee80211_mgmt *mgmt = (void *)skb->data;
2762
2763		if (!memcmp(mgmt->bssid, bssid, ETH_ALEN))
2764			ieee80211_rx_irqsafe(mvm->hw, skb);
2765		else
2766			kfree_skb(skb);
2767	}
2768}
2769
2770void iwl_mvm_mei_scan_filter_init(struct iwl_mei_scan_filter *mei_scan_filter)
2771{
2772	skb_queue_head_init(&mei_scan_filter->scan_res);
2773	INIT_WORK(&mei_scan_filter->scan_work, iwl_mvm_mei_scan_work);
2774}
2775
2776/* In case CSME is connected and has link protection set, this function will
2777 * override the scan request to scan only the associated channel and only for
2778 * the associated SSID.
2779 */
2780static void iwl_mvm_mei_limited_scan(struct iwl_mvm *mvm,
2781				     struct iwl_mvm_scan_params *params)
2782{
2783	struct iwl_mvm_csme_conn_info *info = iwl_mvm_get_csme_conn_info(mvm);
2784	struct iwl_mei_conn_info *conn_info;
2785	struct ieee80211_channel *chan;
2786	int scan_iters, i;
2787
2788	if (!info) {
2789		IWL_DEBUG_SCAN(mvm, "mei_limited_scan: no connection info\n");
2790		return;
2791	}
2792
2793	conn_info = &info->conn_info;
2794	if (!info->conn_info.lp_state || !info->conn_info.ssid_len)
2795		return;
2796
2797	if (!params->n_channels || !params->n_ssids)
2798		return;
2799
2800	mvm->mei_scan_filter.is_mei_limited_scan = true;
2801
2802	chan = ieee80211_get_channel(mvm->hw->wiphy,
2803				     ieee80211_channel_to_frequency(conn_info->channel,
2804								    conn_info->band));
2805	if (!chan) {
2806		IWL_DEBUG_SCAN(mvm,
2807			       "Failed to get CSME channel (chan=%u band=%u)\n",
2808			       conn_info->channel, conn_info->band);
2809		return;
2810	}
2811
2812	/* The mei filtered scan must find the AP, otherwise CSME will
2813	 * take the NIC ownership. Add several iterations on the channel to
2814	 * make the scan more robust.
2815	 */
2816	scan_iters = min(IWL_MEI_SCAN_NUM_ITER, params->n_channels);
2817	params->n_channels = scan_iters;
2818	for (i = 0; i < scan_iters; i++)
2819		params->channels[i] = chan;
2820
2821	IWL_DEBUG_SCAN(mvm, "Mei scan: num iterations=%u\n", scan_iters);
2822
2823	params->n_ssids = 1;
2824	params->ssids[0].ssid_len = conn_info->ssid_len;
2825	memcpy(params->ssids[0].ssid, conn_info->ssid, conn_info->ssid_len);
2826}
2827
2828static int iwl_mvm_build_scan_cmd(struct iwl_mvm *mvm,
2829				  struct ieee80211_vif *vif,
2830				  struct iwl_host_cmd *hcmd,
2831				  struct iwl_mvm_scan_params *params,
2832				  int type)
2833{
2834	int uid, i, err;
2835	u8 scan_ver;
2836
2837	lockdep_assert_held(&mvm->mutex);
2838	memset(mvm->scan_cmd, 0, mvm->scan_cmd_size);
2839
2840	iwl_mvm_mei_limited_scan(mvm, params);
2841
2842	if (!fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
2843		hcmd->id = SCAN_OFFLOAD_REQUEST_CMD;
2844
2845		return iwl_mvm_scan_lmac(mvm, vif, params);
2846	}
2847
2848	uid = iwl_mvm_scan_uid_by_status(mvm, 0);
2849	if (uid < 0)
2850		return uid;
2851
2852	hcmd->id = WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_REQ_UMAC);
2853
2854	scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, SCAN_REQ_UMAC,
2855					 IWL_FW_CMD_VER_UNKNOWN);
2856
2857	for (i = 0; i < ARRAY_SIZE(iwl_scan_umac_handlers); i++) {
2858		const struct iwl_scan_umac_handler *ver_handler =
2859			&iwl_scan_umac_handlers[i];
2860
2861		if (ver_handler->version != scan_ver)
2862			continue;
2863
2864		err = ver_handler->handler(mvm, vif, params, type, uid);
2865		return err ? : uid;
2866	}
2867
2868	err = iwl_mvm_scan_umac(mvm, vif, params, type, uid);
2869	if (err)
2870		return err;
2871
2872	return uid;
2873}
2874
2875struct iwl_mvm_scan_respect_p2p_go_iter_data {
2876	struct ieee80211_vif *current_vif;
2877	bool p2p_go;
2878	enum nl80211_band band;
2879};
2880
2881static void iwl_mvm_scan_respect_p2p_go_iter(void *_data, u8 *mac,
2882					     struct ieee80211_vif *vif)
2883{
2884	struct iwl_mvm_scan_respect_p2p_go_iter_data *data = _data;
2885	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2886
2887	/* exclude the given vif */
2888	if (vif == data->current_vif)
2889		return;
2890
2891	if (ieee80211_vif_type_p2p(vif) == NL80211_IFTYPE_P2P_GO) {
2892		u32 link_id;
2893
2894		for (link_id = 0;
2895		     link_id < ARRAY_SIZE(mvmvif->link);
2896		     link_id++) {
2897			struct iwl_mvm_vif_link_info *link =
2898				mvmvif->link[link_id];
2899
2900			if (link && link->phy_ctxt->id < NUM_PHY_CTX &&
2901			    (data->band == NUM_NL80211_BANDS ||
2902			     link->phy_ctxt->channel->band == data->band)) {
2903				data->p2p_go = true;
2904				break;
2905			}
2906		}
2907	}
2908}
2909
2910static bool _iwl_mvm_get_respect_p2p_go(struct iwl_mvm *mvm,
2911					struct ieee80211_vif *vif,
2912					bool low_latency,
2913					enum nl80211_band band)
2914{
2915	struct iwl_mvm_scan_respect_p2p_go_iter_data data = {
2916		.current_vif = vif,
2917		.p2p_go = false,
2918		.band = band,
2919	};
2920
2921	if (!low_latency)
2922		return false;
2923
2924	ieee80211_iterate_active_interfaces_atomic(mvm->hw,
2925						   IEEE80211_IFACE_ITER_NORMAL,
2926						   iwl_mvm_scan_respect_p2p_go_iter,
2927						   &data);
2928
2929	return data.p2p_go;
2930}
2931
2932static bool iwl_mvm_get_respect_p2p_go_band(struct iwl_mvm *mvm,
2933					    struct ieee80211_vif *vif,
2934					    enum nl80211_band band)
2935{
2936	bool low_latency = iwl_mvm_low_latency_band(mvm, band);
2937
2938	return _iwl_mvm_get_respect_p2p_go(mvm, vif, low_latency, band);
2939}
2940
2941static bool iwl_mvm_get_respect_p2p_go(struct iwl_mvm *mvm,
2942				       struct ieee80211_vif *vif)
2943{
2944	bool low_latency = iwl_mvm_low_latency(mvm);
2945
2946	return _iwl_mvm_get_respect_p2p_go(mvm, vif, low_latency,
2947					   NUM_NL80211_BANDS);
2948}
2949
2950static void iwl_mvm_fill_respect_p2p_go(struct iwl_mvm *mvm,
2951					struct iwl_mvm_scan_params *params,
2952					struct ieee80211_vif *vif)
2953{
2954	if (iwl_mvm_is_cdb_supported(mvm)) {
2955		params->respect_p2p_go =
2956			iwl_mvm_get_respect_p2p_go_band(mvm, vif,
2957							NL80211_BAND_2GHZ);
2958		params->respect_p2p_go_hb =
2959			iwl_mvm_get_respect_p2p_go_band(mvm, vif,
2960							NL80211_BAND_5GHZ);
2961	} else {
2962		params->respect_p2p_go = iwl_mvm_get_respect_p2p_go(mvm, vif);
2963	}
2964}
2965
2966static int _iwl_mvm_single_scan_start(struct iwl_mvm *mvm,
2967				      struct ieee80211_vif *vif,
2968				      struct cfg80211_scan_request *req,
2969				      struct ieee80211_scan_ies *ies,
2970				      int type)
2971{
2972	struct iwl_host_cmd hcmd = {
2973		.len = { iwl_mvm_scan_size(mvm), },
2974		.data = { mvm->scan_cmd, },
2975		.dataflags = { IWL_HCMD_DFL_NOCOPY, },
2976	};
2977	struct iwl_mvm_scan_params params = {};
2978	int ret, uid;
2979	struct cfg80211_sched_scan_plan scan_plan = { .iterations = 1 };
2980
2981	lockdep_assert_held(&mvm->mutex);
2982
2983	if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) {
2984		IWL_ERR(mvm, "scan while LAR regdomain is not set\n");
2985		return -EBUSY;
2986	}
2987
2988	ret = iwl_mvm_check_running_scans(mvm, type);
2989	if (ret)
2990		return ret;
2991
2992	/* we should have failed registration if scan_cmd was NULL */
2993	if (WARN_ON(!mvm->scan_cmd))
2994		return -ENOMEM;
2995
2996	if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, req->n_channels))
2997		return -ENOBUFS;
2998
2999	params.n_ssids = req->n_ssids;
3000	params.flags = req->flags;
3001	params.n_channels = req->n_channels;
3002	params.delay = 0;
3003	params.ssids = req->ssids;
3004	params.channels = req->channels;
3005	params.mac_addr = req->mac_addr;
3006	params.mac_addr_mask = req->mac_addr_mask;
3007	params.no_cck = req->no_cck;
3008	params.pass_all = true;
3009	params.n_match_sets = 0;
3010	params.match_sets = NULL;
3011	ether_addr_copy(params.bssid, req->bssid);
3012
3013	params.scan_plans = &scan_plan;
3014	params.n_scan_plans = 1;
3015
3016	params.n_6ghz_params = req->n_6ghz_params;
3017	params.scan_6ghz_params = req->scan_6ghz_params;
3018	params.scan_6ghz = req->scan_6ghz;
3019	iwl_mvm_fill_scan_type(mvm, &params, vif);
3020	iwl_mvm_fill_respect_p2p_go(mvm, &params, vif);
3021
3022	if (req->duration)
3023		params.iter_notif = true;
3024
3025	params.tsf_report_link_id = req->tsf_report_link_id;
3026	if (params.tsf_report_link_id < 0) {
3027		if (vif->active_links)
3028			params.tsf_report_link_id = __ffs(vif->active_links);
3029		else
3030			params.tsf_report_link_id = 0;
3031	}
3032
3033	iwl_mvm_build_scan_probe(mvm, vif, ies, &params);
3034
3035	iwl_mvm_scan_6ghz_passive_scan(mvm, &params, vif);
3036
3037	uid = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, &params, type);
3038
3039	if (uid < 0)
3040		return uid;
3041
3042	iwl_mvm_pause_tcm(mvm, false);
3043
3044	ret = iwl_mvm_send_cmd(mvm, &hcmd);
3045	if (ret) {
3046		/* If the scan failed, it usually means that the FW was unable
3047		 * to allocate the time events. Warn on it, but maybe we
3048		 * should try to send the command again with different params.
3049		 */
3050		IWL_ERR(mvm, "Scan failed! ret %d\n", ret);
3051		iwl_mvm_resume_tcm(mvm);
3052		return ret;
3053	}
3054
3055	IWL_DEBUG_SCAN(mvm, "Scan request send success: type=%u, uid=%u\n",
3056		       type, uid);
3057
3058	mvm->scan_uid_status[uid] = type;
3059	mvm->scan_status |= type;
3060
3061	if (type == IWL_MVM_SCAN_REGULAR) {
3062		mvm->scan_vif = iwl_mvm_vif_from_mac80211(vif);
3063		schedule_delayed_work(&mvm->scan_timeout_dwork,
3064				      msecs_to_jiffies(SCAN_TIMEOUT));
3065	}
3066
3067	if (params.enable_6ghz_passive)
3068		mvm->last_6ghz_passive_scan_jiffies = jiffies;
3069
3070	return 0;
3071}
3072
3073int iwl_mvm_reg_scan_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
3074			   struct cfg80211_scan_request *req,
3075			   struct ieee80211_scan_ies *ies)
3076{
3077	return _iwl_mvm_single_scan_start(mvm, vif, req, ies,
3078					  IWL_MVM_SCAN_REGULAR);
3079}
3080
3081int iwl_mvm_sched_scan_start(struct iwl_mvm *mvm,
3082			     struct ieee80211_vif *vif,
3083			     struct cfg80211_sched_scan_request *req,
3084			     struct ieee80211_scan_ies *ies,
3085			     int type)
3086{
3087	struct iwl_host_cmd hcmd = {
3088		.len = { iwl_mvm_scan_size(mvm), },
3089		.data = { mvm->scan_cmd, },
3090		.dataflags = { IWL_HCMD_DFL_NOCOPY, },
3091	};
3092	struct iwl_mvm_scan_params params = {};
3093	int ret, uid;
3094	int i, j;
3095	bool non_psc_included = false;
3096
3097	lockdep_assert_held(&mvm->mutex);
3098
3099	if (iwl_mvm_is_lar_supported(mvm) && !mvm->lar_regdom_set) {
3100		IWL_ERR(mvm, "sched-scan while LAR regdomain is not set\n");
3101		return -EBUSY;
3102	}
3103
3104	ret = iwl_mvm_check_running_scans(mvm, type);
3105	if (ret)
3106		return ret;
3107
3108	/* we should have failed registration if scan_cmd was NULL */
3109	if (WARN_ON(!mvm->scan_cmd))
3110		return -ENOMEM;
3111
3112
3113	params.n_ssids = req->n_ssids;
3114	params.flags = req->flags;
3115	params.n_channels = req->n_channels;
3116	params.ssids = req->ssids;
3117	params.channels = req->channels;
3118	params.mac_addr = req->mac_addr;
3119	params.mac_addr_mask = req->mac_addr_mask;
3120	params.no_cck = false;
3121	params.pass_all =  iwl_mvm_scan_pass_all(mvm, req);
3122	params.n_match_sets = req->n_match_sets;
3123	params.match_sets = req->match_sets;
3124	eth_broadcast_addr(params.bssid);
3125	if (!req->n_scan_plans)
3126		return -EINVAL;
3127
3128	params.n_scan_plans = req->n_scan_plans;
3129	params.scan_plans = req->scan_plans;
3130
3131	iwl_mvm_fill_scan_type(mvm, &params, vif);
3132	iwl_mvm_fill_respect_p2p_go(mvm, &params, vif);
3133
3134	/* In theory, LMAC scans can handle a 32-bit delay, but since
3135	 * waiting for over 18 hours to start the scan is a bit silly
3136	 * and to keep it aligned with UMAC scans (which only support
3137	 * 16-bit delays), trim it down to 16-bits.
3138	 */
3139	if (req->delay > U16_MAX) {
3140		IWL_DEBUG_SCAN(mvm,
3141			       "delay value is > 16-bits, set to max possible\n");
3142		params.delay = U16_MAX;
3143	} else {
3144		params.delay = req->delay;
3145	}
3146
3147	ret = iwl_mvm_config_sched_scan_profiles(mvm, req);
3148	if (ret)
3149		return ret;
3150
3151	iwl_mvm_build_scan_probe(mvm, vif, ies, &params);
3152
3153	/* for 6 GHZ band only PSC channels need to be added */
3154	for (i = 0; i < params.n_channels; i++) {
3155		struct ieee80211_channel *channel = params.channels[i];
3156
3157		if (channel->band == NL80211_BAND_6GHZ &&
3158		    !cfg80211_channel_is_psc(channel)) {
3159			non_psc_included = true;
3160			break;
3161		}
3162	}
3163
3164	if (non_psc_included) {
3165		params.channels = kmemdup(params.channels,
3166					  sizeof(params.channels[0]) *
3167					  params.n_channels,
3168					  GFP_KERNEL);
3169		if (!params.channels)
3170			return -ENOMEM;
3171
3172		for (i = j = 0; i < params.n_channels; i++) {
3173			if (params.channels[i]->band == NL80211_BAND_6GHZ &&
3174			    !cfg80211_channel_is_psc(params.channels[i]))
3175				continue;
3176			params.channels[j++] = params.channels[i];
3177		}
3178		params.n_channels = j;
3179	}
3180
3181	if (!iwl_mvm_scan_fits(mvm, req->n_ssids, ies, params.n_channels)) {
3182		ret = -ENOBUFS;
3183		goto out;
3184	}
3185
3186	uid = iwl_mvm_build_scan_cmd(mvm, vif, &hcmd, &params, type);
3187	if (uid < 0) {
3188		ret = uid;
3189		goto out;
3190	}
3191
3192	ret = iwl_mvm_send_cmd(mvm, &hcmd);
3193	if (!ret) {
3194		IWL_DEBUG_SCAN(mvm,
3195			       "Sched scan request send success: type=%u, uid=%u\n",
3196			       type, uid);
3197		mvm->scan_uid_status[uid] = type;
3198		mvm->scan_status |= type;
3199	} else {
3200		/* If the scan failed, it usually means that the FW was unable
3201		 * to allocate the time events. Warn on it, but maybe we
3202		 * should try to send the command again with different params.
3203		 */
3204		IWL_ERR(mvm, "Sched scan failed! ret %d\n", ret);
3205		mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
3206	}
3207
3208out:
3209	if (non_psc_included)
3210		kfree(params.channels);
3211	return ret;
3212}
3213
3214void iwl_mvm_rx_umac_scan_complete_notif(struct iwl_mvm *mvm,
3215					 struct iwl_rx_cmd_buffer *rxb)
3216{
3217	struct iwl_rx_packet *pkt = rxb_addr(rxb);
3218	struct iwl_umac_scan_complete *notif = (void *)pkt->data;
3219	u32 uid = __le32_to_cpu(notif->uid);
3220	bool aborted = (notif->status == IWL_SCAN_OFFLOAD_ABORTED);
3221
3222	mvm->mei_scan_filter.is_mei_limited_scan = false;
3223
3224	IWL_DEBUG_SCAN(mvm,
3225		       "Scan completed: uid=%u type=%u, status=%s, EBS=%s\n",
3226		       uid, mvm->scan_uid_status[uid],
3227		       notif->status == IWL_SCAN_OFFLOAD_COMPLETED ?
3228				"completed" : "aborted",
3229		       iwl_mvm_ebs_status_str(notif->ebs_status));
3230
3231	IWL_DEBUG_SCAN(mvm, "Scan completed: scan_status=0x%x\n",
3232		       mvm->scan_status);
3233
3234	IWL_DEBUG_SCAN(mvm,
3235		       "Scan completed: line=%u, iter=%u, elapsed time=%u\n",
3236		       notif->last_schedule, notif->last_iter,
3237		       __le32_to_cpu(notif->time_from_last_iter));
3238
3239	if (WARN_ON(!(mvm->scan_uid_status[uid] & mvm->scan_status)))
3240		return;
3241
3242	/* if the scan is already stopping, we don't need to notify mac80211 */
3243	if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_REGULAR) {
3244		struct cfg80211_scan_info info = {
3245			.aborted = aborted,
3246			.scan_start_tsf = mvm->scan_start,
3247		};
3248		struct iwl_mvm_vif *scan_vif = mvm->scan_vif;
3249		struct iwl_mvm_vif_link_info *link_info =
3250			scan_vif->link[mvm->scan_link_id];
3251
3252		/* It is possible that by the time the scan is complete the link
3253		 * was already removed and is not valid.
3254		 */
3255		if (link_info)
3256			memcpy(info.tsf_bssid, link_info->bssid, ETH_ALEN);
3257		else
3258			IWL_DEBUG_SCAN(mvm, "Scan link is no longer valid\n");
3259
3260		ieee80211_scan_completed(mvm->hw, &info);
3261		mvm->scan_vif = NULL;
3262		cancel_delayed_work(&mvm->scan_timeout_dwork);
3263		iwl_mvm_resume_tcm(mvm);
3264	} else if (mvm->scan_uid_status[uid] == IWL_MVM_SCAN_SCHED) {
3265		ieee80211_sched_scan_stopped(mvm->hw);
3266		mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
3267	}
3268
3269	mvm->scan_status &= ~mvm->scan_uid_status[uid];
3270
3271	IWL_DEBUG_SCAN(mvm, "Scan completed: after update: scan_status=0x%x\n",
3272		       mvm->scan_status);
3273
3274	if (notif->ebs_status != IWL_SCAN_EBS_SUCCESS &&
3275	    notif->ebs_status != IWL_SCAN_EBS_INACTIVE)
3276		mvm->last_ebs_successful = false;
3277
3278	mvm->scan_uid_status[uid] = 0;
3279}
3280
3281void iwl_mvm_rx_umac_scan_iter_complete_notif(struct iwl_mvm *mvm,
3282					      struct iwl_rx_cmd_buffer *rxb)
3283{
3284	struct iwl_rx_packet *pkt = rxb_addr(rxb);
3285	struct iwl_umac_scan_iter_complete_notif *notif = (void *)pkt->data;
3286
3287	mvm->scan_start = le64_to_cpu(notif->start_tsf);
3288
3289	IWL_DEBUG_SCAN(mvm,
3290		       "UMAC Scan iteration complete: status=0x%x scanned_channels=%d\n",
3291		       notif->status, notif->scanned_channels);
3292
3293	if (mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_FOUND) {
3294		IWL_DEBUG_SCAN(mvm, "Pass all scheduled scan results found\n");
3295		ieee80211_sched_scan_results(mvm->hw);
3296		mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_ENABLED;
3297	}
3298
3299	IWL_DEBUG_SCAN(mvm,
3300		       "UMAC Scan iteration complete: scan started at %llu (TSF)\n",
3301		       mvm->scan_start);
3302}
3303
3304static int iwl_mvm_umac_scan_abort(struct iwl_mvm *mvm, int type, bool *wait)
3305{
3306	struct iwl_umac_scan_abort abort_cmd = {};
3307	struct iwl_host_cmd cmd = {
3308		.id = WIDE_ID(IWL_ALWAYS_LONG_GROUP, SCAN_ABORT_UMAC),
3309		.len = { sizeof(abort_cmd), },
3310		.data = { &abort_cmd, },
3311		.flags = CMD_SEND_IN_RFKILL,
3312	};
3313
3314	int uid, ret;
3315	u32 status = IWL_UMAC_SCAN_ABORT_STATUS_NOT_FOUND;
3316
3317	lockdep_assert_held(&mvm->mutex);
3318
3319	*wait = true;
3320
3321	/* We should always get a valid index here, because we already
3322	 * checked that this type of scan was running in the generic
3323	 * code.
3324	 */
3325	uid = iwl_mvm_scan_uid_by_status(mvm, type);
3326	if (WARN_ON_ONCE(uid < 0))
3327		return uid;
3328
3329	abort_cmd.uid = cpu_to_le32(uid);
3330
3331	IWL_DEBUG_SCAN(mvm, "Sending scan abort, uid %u\n", uid);
3332
3333	ret = iwl_mvm_send_cmd_status(mvm, &cmd, &status);
3334
3335	IWL_DEBUG_SCAN(mvm, "Scan abort: ret=%d, status=%u\n", ret, status);
3336	if (!ret)
3337		mvm->scan_uid_status[uid] = type << IWL_MVM_SCAN_STOPPING_SHIFT;
3338
3339	/* Handle the case that the FW is no longer familiar with the scan that
3340	 * is to be stopped. In such a case, it is expected that the scan
3341	 * complete notification was already received but not yet processed.
3342	 * In such a case, there is no need to wait for a scan complete
3343	 * notification and the flow should continue similar to the case that
3344	 * the scan was really aborted.
3345	 */
3346	if (status == IWL_UMAC_SCAN_ABORT_STATUS_NOT_FOUND) {
3347		mvm->scan_uid_status[uid] = type << IWL_MVM_SCAN_STOPPING_SHIFT;
3348		*wait = false;
3349	}
3350
3351	return ret;
3352}
3353
3354static int iwl_mvm_scan_stop_wait(struct iwl_mvm *mvm, int type)
3355{
3356	struct iwl_notification_wait wait_scan_done;
3357	static const u16 scan_done_notif[] = { SCAN_COMPLETE_UMAC,
3358					      SCAN_OFFLOAD_COMPLETE, };
3359	int ret;
3360	bool wait = true;
3361
3362	lockdep_assert_held(&mvm->mutex);
3363
3364	iwl_init_notification_wait(&mvm->notif_wait, &wait_scan_done,
3365				   scan_done_notif,
3366				   ARRAY_SIZE(scan_done_notif),
3367				   NULL, NULL);
3368
3369	IWL_DEBUG_SCAN(mvm, "Preparing to stop scan, type %x\n", type);
3370
3371	if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
3372		ret = iwl_mvm_umac_scan_abort(mvm, type, &wait);
3373	else
3374		ret = iwl_mvm_lmac_scan_abort(mvm);
3375
3376	if (ret) {
3377		IWL_DEBUG_SCAN(mvm, "couldn't stop scan type %d\n", type);
3378		iwl_remove_notification(&mvm->notif_wait, &wait_scan_done);
3379		return ret;
3380	} else if (!wait) {
3381		IWL_DEBUG_SCAN(mvm, "no need to wait for scan type %d\n", type);
3382		iwl_remove_notification(&mvm->notif_wait, &wait_scan_done);
3383		return 0;
3384	}
3385
3386	return iwl_wait_notification(&mvm->notif_wait, &wait_scan_done,
3387				     1 * HZ);
3388}
3389
3390static size_t iwl_scan_req_umac_get_size(u8 scan_ver)
3391{
3392	switch (scan_ver) {
3393	case 12:
3394		return sizeof(struct iwl_scan_req_umac_v12);
3395	case 14:
3396	case 15:
3397	case 16:
3398	case 17:
3399		return sizeof(struct iwl_scan_req_umac_v17);
3400	}
3401
3402	return 0;
3403}
3404
3405size_t iwl_mvm_scan_size(struct iwl_mvm *mvm)
3406{
3407	int base_size, tail_size;
3408	u8 scan_ver = iwl_fw_lookup_cmd_ver(mvm->fw, SCAN_REQ_UMAC,
3409					    IWL_FW_CMD_VER_UNKNOWN);
3410
3411	base_size = iwl_scan_req_umac_get_size(scan_ver);
3412	if (base_size)
3413		return base_size;
3414
3415
3416	if (iwl_mvm_is_adaptive_dwell_v2_supported(mvm))
3417		base_size = IWL_SCAN_REQ_UMAC_SIZE_V8;
3418	else if (iwl_mvm_is_adaptive_dwell_supported(mvm))
3419		base_size = IWL_SCAN_REQ_UMAC_SIZE_V7;
3420	else if (iwl_mvm_cdb_scan_api(mvm))
3421		base_size = IWL_SCAN_REQ_UMAC_SIZE_V6;
3422	else
3423		base_size = IWL_SCAN_REQ_UMAC_SIZE_V1;
3424
3425	if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
3426		if (iwl_mvm_is_scan_ext_chan_supported(mvm))
3427			tail_size = sizeof(struct iwl_scan_req_umac_tail_v2);
3428		else
3429			tail_size = sizeof(struct iwl_scan_req_umac_tail_v1);
3430
3431		return base_size +
3432			sizeof(struct iwl_scan_channel_cfg_umac) *
3433				mvm->fw->ucode_capa.n_scan_channels +
3434			tail_size;
3435	}
3436	return sizeof(struct iwl_scan_req_lmac) +
3437		sizeof(struct iwl_scan_channel_cfg_lmac) *
3438		mvm->fw->ucode_capa.n_scan_channels +
3439		sizeof(struct iwl_scan_probe_req_v1);
3440}
3441
3442/*
3443 * This function is used in nic restart flow, to inform mac80211 about scans
3444 * that was aborted by restart flow or by an assert.
3445 */
3446void iwl_mvm_report_scan_aborted(struct iwl_mvm *mvm)
3447{
3448	if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN)) {
3449		int uid, i;
3450
3451		uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_REGULAR);
3452		if (uid >= 0) {
3453			struct cfg80211_scan_info info = {
3454				.aborted = true,
3455			};
3456
3457			cancel_delayed_work(&mvm->scan_timeout_dwork);
3458
3459			ieee80211_scan_completed(mvm->hw, &info);
3460			mvm->scan_uid_status[uid] = 0;
3461		}
3462		uid = iwl_mvm_scan_uid_by_status(mvm, IWL_MVM_SCAN_SCHED);
3463		if (uid >= 0) {
3464			/* Sched scan will be restarted by mac80211 in
3465			 * restart_hw, so do not report if FW is about to be
3466			 * restarted.
3467			 */
3468			if (!iwlwifi_mod_params.fw_restart)
3469				ieee80211_sched_scan_stopped(mvm->hw);
3470			mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
3471			mvm->scan_uid_status[uid] = 0;
3472		}
3473
3474		uid = iwl_mvm_scan_uid_by_status(mvm,
3475						 IWL_MVM_SCAN_STOPPING_REGULAR);
3476		if (uid >= 0)
3477			mvm->scan_uid_status[uid] = 0;
3478
3479		uid = iwl_mvm_scan_uid_by_status(mvm,
3480						 IWL_MVM_SCAN_STOPPING_SCHED);
3481		if (uid >= 0)
3482			mvm->scan_uid_status[uid] = 0;
3483
3484		uid = iwl_mvm_scan_uid_by_status(mvm,
3485						 IWL_MVM_SCAN_STOPPING_INT_MLO);
3486		if (uid >= 0)
3487			mvm->scan_uid_status[uid] = 0;
3488
3489		/* We shouldn't have any UIDs still set.  Loop over all the
3490		 * UIDs to make sure there's nothing left there and warn if
3491		 * any is found.
3492		 */
3493		for (i = 0; i < mvm->max_scans; i++) {
3494			if (WARN_ONCE(mvm->scan_uid_status[i],
3495				      "UMAC scan UID %d status was not cleaned\n",
3496				      i))
3497				mvm->scan_uid_status[i] = 0;
3498		}
3499	} else {
3500		if (mvm->scan_status & IWL_MVM_SCAN_REGULAR) {
3501			struct cfg80211_scan_info info = {
3502				.aborted = true,
3503			};
3504
3505			cancel_delayed_work(&mvm->scan_timeout_dwork);
3506			ieee80211_scan_completed(mvm->hw, &info);
3507		}
3508
3509		/* Sched scan will be restarted by mac80211 in
3510		 * restart_hw, so do not report if FW is about to be
3511		 * restarted.
3512		 */
3513		if ((mvm->scan_status & IWL_MVM_SCAN_SCHED) &&
3514		    !iwlwifi_mod_params.fw_restart) {
3515			ieee80211_sched_scan_stopped(mvm->hw);
3516			mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
3517		}
3518	}
3519}
3520
3521int iwl_mvm_scan_stop(struct iwl_mvm *mvm, int type, bool notify)
3522{
3523	int ret;
3524
3525	IWL_DEBUG_SCAN(mvm,
3526		       "Request to stop scan: type=0x%x, status=0x%x\n",
3527		       type, mvm->scan_status);
3528
3529	if (!(mvm->scan_status & type))
3530		return 0;
3531
3532	if (!iwl_trans_device_enabled(mvm->trans)) {
3533		ret = 0;
3534		goto out;
3535	}
3536
3537	ret = iwl_mvm_scan_stop_wait(mvm, type);
3538	if (!ret)
3539		mvm->scan_status |= type << IWL_MVM_SCAN_STOPPING_SHIFT;
3540	else
3541		IWL_DEBUG_SCAN(mvm, "Failed to stop scan\n");
3542
3543out:
3544	/* Clear the scan status so the next scan requests will
3545	 * succeed and mark the scan as stopping, so that the Rx
3546	 * handler doesn't do anything, as the scan was stopped from
3547	 * above.
3548	 */
3549	mvm->scan_status &= ~type;
3550
3551	if (type == IWL_MVM_SCAN_REGULAR) {
3552		cancel_delayed_work(&mvm->scan_timeout_dwork);
3553		if (notify) {
3554			struct cfg80211_scan_info info = {
3555				.aborted = true,
3556			};
3557
3558			ieee80211_scan_completed(mvm->hw, &info);
3559		}
3560	} else if (notify) {
3561		ieee80211_sched_scan_stopped(mvm->hw);
3562		mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_DISABLED;
3563	}
3564
3565	return ret;
3566}
3567
3568static int iwl_mvm_chanidx_from_phy(struct iwl_mvm *mvm,
3569				    enum nl80211_band band,
3570				    u16 phy_chan_num)
3571{
3572	struct ieee80211_supported_band *sband = mvm->hw->wiphy->bands[band];
3573	int chan_idx;
3574
3575	if (WARN_ON_ONCE(!sband))
3576		return -EINVAL;
3577
3578	for (chan_idx = 0; chan_idx < sband->n_channels; chan_idx++) {
3579		struct ieee80211_channel *channel = &sband->channels[chan_idx];
3580
3581		if (channel->hw_value == phy_chan_num)
3582			return chan_idx;
3583	}
3584
3585	return -EINVAL;
3586}
3587
3588void iwl_mvm_rx_channel_survey_notif(struct iwl_mvm *mvm,
3589				     struct iwl_rx_cmd_buffer *rxb)
3590{
3591	struct iwl_rx_packet *pkt = rxb_addr(rxb);
3592	const struct iwl_umac_scan_channel_survey_notif *notif =
3593		(void *)pkt->data;
3594	struct iwl_mvm_acs_survey_channel *info;
3595	enum nl80211_band band;
3596	int chan_idx;
3597
3598	lockdep_assert_held(&mvm->mutex);
3599
3600	if (!mvm->acs_survey) {
3601		size_t n_channels = 0;
3602
3603		for (band = 0; band < NUM_NL80211_BANDS; band++) {
3604			if (!mvm->hw->wiphy->bands[band])
3605				continue;
3606
3607			n_channels += mvm->hw->wiphy->bands[band]->n_channels;
3608		}
3609
3610		mvm->acs_survey = kzalloc(struct_size(mvm->acs_survey,
3611						      channels, n_channels),
3612					  GFP_KERNEL);
3613
3614		if (!mvm->acs_survey)
3615			return;
3616
3617		mvm->acs_survey->n_channels = n_channels;
3618		n_channels = 0;
3619		for (band = 0; band < NUM_NL80211_BANDS; band++) {
3620			if (!mvm->hw->wiphy->bands[band])
3621				continue;
3622
3623			mvm->acs_survey->bands[band] =
3624				&mvm->acs_survey->channels[n_channels];
3625			n_channels += mvm->hw->wiphy->bands[band]->n_channels;
3626		}
3627	}
3628
3629	band = iwl_mvm_nl80211_band_from_phy(le32_to_cpu(notif->band));
3630	chan_idx = iwl_mvm_chanidx_from_phy(mvm, band,
3631					    le32_to_cpu(notif->channel));
3632	if (WARN_ON_ONCE(chan_idx < 0))
3633		return;
3634
3635	IWL_DEBUG_SCAN(mvm, "channel survey received for freq %d\n",
3636		       mvm->hw->wiphy->bands[band]->channels[chan_idx].center_freq);
3637
3638	info = &mvm->acs_survey->bands[band][chan_idx];
3639
3640	/* Times are all in ms */
3641	info->time = le32_to_cpu(notif->active_time);
3642	info->time_busy = le32_to_cpu(notif->busy_time);
3643	info->time_rx = le32_to_cpu(notif->rx_time);
3644	info->time_tx = le32_to_cpu(notif->tx_time);
3645	info->noise =
3646		iwl_average_neg_dbm(notif->noise, ARRAY_SIZE(notif->noise));
3647}