rx.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/unaligned.h>
   8#include <linux/etherdevice.h>
   9#include <linux/skbuff.h>
  10#include "iwl-trans.h"
  11#include "mvm.h"
  12#include "fw-api.h"
  13
  14/*
  15 * iwl_mvm_rx_rx_phy_cmd - REPLY_RX_PHY_CMD handler
  16 *
  17 * Copies the phy information in mvm->last_phy_info, it will be used when the
  18 * actual data will come from the fw in the next packet.
  19 */
  20void iwl_mvm_rx_rx_phy_cmd(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
  21{
  22	struct iwl_rx_packet *pkt = rxb_addr(rxb);
  23	unsigned int pkt_len = iwl_rx_packet_payload_len(pkt);
  24
  25	if (unlikely(pkt_len < sizeof(mvm->last_phy_info)))
  26		return;
  27
  28	memcpy(&mvm->last_phy_info, pkt->data, sizeof(mvm->last_phy_info));
  29	mvm->ampdu_ref++;
  30
  31#ifdef CONFIG_IWLWIFI_DEBUGFS
  32	if (mvm->last_phy_info.phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_AGG)) {
  33		spin_lock(&mvm->drv_stats_lock);
  34		mvm->drv_rx_stats.ampdu_count++;
  35		spin_unlock(&mvm->drv_stats_lock);
  36	}
  37#endif
  38}
  39
  40/*
  41 * iwl_mvm_pass_packet_to_mac80211 - builds the packet for mac80211
  42 *
  43 * Adds the rxb to a new skb and give it to mac80211
  44 */
  45static void iwl_mvm_pass_packet_to_mac80211(struct iwl_mvm *mvm,
  46					    struct ieee80211_sta *sta,
  47					    struct napi_struct *napi,
  48					    struct sk_buff *skb,
  49					    struct ieee80211_hdr *hdr, u16 len,
  50					    u8 crypt_len,
  51					    struct iwl_rx_cmd_buffer *rxb)
  52{
  53	unsigned int hdrlen = ieee80211_hdrlen(hdr->frame_control);
  54	unsigned int fraglen;
  55
  56	/*
  57	 * The 'hdrlen' (plus the 8 bytes for the SNAP and the crypt_len,
  58	 * but those are all multiples of 4 long) all goes away, but we
  59	 * want the *end* of it, which is going to be the start of the IP
  60	 * header, to be aligned when it gets pulled in.
  61	 * The beginning of the skb->data is aligned on at least a 4-byte
  62	 * boundary after allocation. Everything here is aligned at least
  63	 * on a 2-byte boundary so we can just take hdrlen & 3 and pad by
  64	 * the result.
  65	 */
  66	skb_reserve(skb, hdrlen & 3);
  67
  68	/* If frame is small enough to fit in skb->head, pull it completely.
  69	 * If not, only pull ieee80211_hdr (including crypto if present, and
  70	 * an additional 8 bytes for SNAP/ethertype, see below) so that
  71	 * splice() or TCP coalesce are more efficient.
  72	 *
  73	 * Since, in addition, ieee80211_data_to_8023() always pull in at
  74	 * least 8 bytes (possibly more for mesh) we can do the same here
  75	 * to save the cost of doing it later. That still doesn't pull in
  76	 * the actual IP header since the typical case has a SNAP header.
  77	 * If the latter changes (there are efforts in the standards group
  78	 * to do so) we should revisit this and ieee80211_data_to_8023().
  79	 */
  80	hdrlen = (len <= skb_tailroom(skb)) ? len : hdrlen + crypt_len + 8;
  81
  82	skb_put_data(skb, hdr, hdrlen);
  83	fraglen = len - hdrlen;
  84
  85	if (fraglen) {
  86		int offset = (u8 *)hdr + hdrlen -
  87			     (u8 *)rxb_addr(rxb) + rxb_offset(rxb);
  88
  89		skb_add_rx_frag(skb, 0, rxb_steal_page(rxb), offset,
  90				fraglen, rxb->truesize);
  91	}
  92
  93	ieee80211_rx_napi(mvm->hw, sta, skb, napi);
  94}
  95
  96/*
  97 * iwl_mvm_get_signal_strength - use new rx PHY INFO API
  98 * values are reported by the fw as positive values - need to negate
  99 * to obtain their dBM.  Account for missing antennas by replacing 0
 100 * values by -256dBm: practically 0 power and a non-feasible 8 bit value.
 101 */
 102static void iwl_mvm_get_signal_strength(struct iwl_mvm *mvm,
 103					struct iwl_rx_phy_info *phy_info,
 104					struct ieee80211_rx_status *rx_status)
 105{
 106	int energy_a, energy_b, max_energy;
 107	u32 val;
 108
 109	val =
 110	    le32_to_cpu(phy_info->non_cfg_phy[IWL_RX_INFO_ENERGY_ANT_ABC_IDX]);
 111	energy_a = (val & IWL_RX_INFO_ENERGY_ANT_A_MSK) >>
 112						IWL_RX_INFO_ENERGY_ANT_A_POS;
 113	energy_a = energy_a ? -energy_a : S8_MIN;
 114	energy_b = (val & IWL_RX_INFO_ENERGY_ANT_B_MSK) >>
 115						IWL_RX_INFO_ENERGY_ANT_B_POS;
 116	energy_b = energy_b ? -energy_b : S8_MIN;
 117	max_energy = max(energy_a, energy_b);
 118
 119	IWL_DEBUG_STATS(mvm, "energy In A %d B %d  , and max %d\n",
 120			energy_a, energy_b, max_energy);
 121
 122	rx_status->signal = max_energy;
 123	rx_status->chains = (le16_to_cpu(phy_info->phy_flags) &
 124				RX_RES_PHY_FLAGS_ANTENNA)
 125					>> RX_RES_PHY_FLAGS_ANTENNA_POS;
 126	rx_status->chain_signal[0] = energy_a;
 127	rx_status->chain_signal[1] = energy_b;
 128}
 129
 130/*
 131 * iwl_mvm_set_mac80211_rx_flag - translate fw status to mac80211 format
 132 * @mvm: the mvm object
 133 * @hdr: 80211 header
 134 * @stats: status in mac80211's format
 135 * @rx_pkt_status: status coming from fw
 136 *
 137 * returns non 0 value if the packet should be dropped
 138 */
 139static u32 iwl_mvm_set_mac80211_rx_flag(struct iwl_mvm *mvm,
 140					struct ieee80211_hdr *hdr,
 141					struct ieee80211_rx_status *stats,
 142					u32 rx_pkt_status,
 143					u8 *crypt_len)
 144{
 145	if (!ieee80211_has_protected(hdr->frame_control) ||
 146	    (rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) ==
 147			     RX_MPDU_RES_STATUS_SEC_NO_ENC)
 148		return 0;
 149
 150	/* packet was encrypted with unknown alg */
 151	if ((rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) ==
 152					RX_MPDU_RES_STATUS_SEC_ENC_ERR)
 153		return 0;
 154
 155	switch (rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) {
 156	case RX_MPDU_RES_STATUS_SEC_CCM_ENC:
 157		/* alg is CCM: check MIC only */
 158		if (!(rx_pkt_status & RX_MPDU_RES_STATUS_MIC_OK))
 159			return -1;
 160
 161		stats->flag |= RX_FLAG_DECRYPTED;
 162		*crypt_len = IEEE80211_CCMP_HDR_LEN;
 163		return 0;
 164
 165	case RX_MPDU_RES_STATUS_SEC_TKIP_ENC:
 166		/* Don't drop the frame and decrypt it in SW */
 167		if (!fw_has_api(&mvm->fw->ucode_capa,
 168				IWL_UCODE_TLV_API_DEPRECATE_TTAK) &&
 169		    !(rx_pkt_status & RX_MPDU_RES_STATUS_TTAK_OK))
 170			return 0;
 171		*crypt_len = IEEE80211_TKIP_IV_LEN;
 172		fallthrough;
 173
 174	case RX_MPDU_RES_STATUS_SEC_WEP_ENC:
 175		if (!(rx_pkt_status & RX_MPDU_RES_STATUS_ICV_OK))
 176			return -1;
 177
 178		stats->flag |= RX_FLAG_DECRYPTED;
 179		if ((rx_pkt_status & RX_MPDU_RES_STATUS_SEC_ENC_MSK) ==
 180				RX_MPDU_RES_STATUS_SEC_WEP_ENC)
 181			*crypt_len = IEEE80211_WEP_IV_LEN;
 182		return 0;
 183
 184	case RX_MPDU_RES_STATUS_SEC_EXT_ENC:
 185		if (!(rx_pkt_status & RX_MPDU_RES_STATUS_MIC_OK))
 186			return -1;
 187		stats->flag |= RX_FLAG_DECRYPTED;
 188		return 0;
 189
 190	default:
 191		/* Expected in monitor (not having the keys) */
 192		if (!mvm->monitor_on)
 193			IWL_WARN(mvm, "Unhandled alg: 0x%x\n", rx_pkt_status);
 194	}
 195
 196	return 0;
 197}
 198
 199static void iwl_mvm_rx_handle_tcm(struct iwl_mvm *mvm,
 200				  struct ieee80211_sta *sta,
 201				  struct ieee80211_hdr *hdr, u32 len,
 202				  struct iwl_rx_phy_info *phy_info,
 203				  u32 rate_n_flags)
 204{
 205	struct iwl_mvm_sta *mvmsta;
 206	struct iwl_mvm_tcm_mac *mdata;
 207	int mac;
 208	int ac = IEEE80211_AC_BE; /* treat non-QoS as BE */
 209	struct iwl_mvm_vif *mvmvif;
 210	/* expected throughput in 100Kbps, single stream, 20 MHz */
 211	static const u8 thresh_tpt[] = {
 212		9, 18, 30, 42, 60, 78, 90, 96, 120, 135,
 213	};
 214	u16 thr;
 215
 216	if (ieee80211_is_data_qos(hdr->frame_control)) {
 217		u8 tid = ieee80211_get_tid(hdr);
 218
 219		if (tid < IWL_MAX_TID_COUNT)
 220			ac = tid_to_mac80211_ac[tid];
 221	}
 222
 223	mvmsta = iwl_mvm_sta_from_mac80211(sta);
 224	mac = mvmsta->mac_id_n_color & FW_CTXT_ID_MSK;
 225
 226	if (time_after(jiffies, mvm->tcm.ts + MVM_TCM_PERIOD))
 227		schedule_delayed_work(&mvm->tcm.work, 0);
 228	mdata = &mvm->tcm.data[mac];
 229	mdata->rx.pkts[ac]++;
 230
 231	/* count the airtime only once for each ampdu */
 232	if (mdata->rx.last_ampdu_ref != mvm->ampdu_ref) {
 233		mdata->rx.last_ampdu_ref = mvm->ampdu_ref;
 234		mdata->rx.airtime += le16_to_cpu(phy_info->frame_time);
 235	}
 236
 237	if (!(rate_n_flags & (RATE_MCS_HT_MSK_V1 | RATE_MCS_VHT_MSK_V1)))
 238		return;
 239
 240	mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
 241
 242	if (mdata->opened_rx_ba_sessions ||
 243	    mdata->uapsd_nonagg_detect.detected ||
 244	    (!mvmvif->deflink.queue_params[IEEE80211_AC_VO].uapsd &&
 245	     !mvmvif->deflink.queue_params[IEEE80211_AC_VI].uapsd &&
 246	     !mvmvif->deflink.queue_params[IEEE80211_AC_BE].uapsd &&
 247	     !mvmvif->deflink.queue_params[IEEE80211_AC_BK].uapsd) ||
 248	    mvmsta->deflink.sta_id != mvmvif->deflink.ap_sta_id)
 249		return;
 250
 251	if (rate_n_flags & RATE_MCS_HT_MSK_V1) {
 252		thr = thresh_tpt[rate_n_flags & RATE_HT_MCS_RATE_CODE_MSK_V1];
 253		thr *= 1 + ((rate_n_flags & RATE_HT_MCS_NSS_MSK_V1) >>
 254					RATE_HT_MCS_NSS_POS_V1);
 255	} else {
 256		if (WARN_ON((rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK) >=
 257				ARRAY_SIZE(thresh_tpt)))
 258			return;
 259		thr = thresh_tpt[rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK];
 260		thr *= 1 + FIELD_GET(RATE_MCS_NSS_MSK, rate_n_flags);
 261	}
 262
 263	thr <<= ((rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK_V1) >>
 264				RATE_MCS_CHAN_WIDTH_POS);
 265
 266	mdata->uapsd_nonagg_detect.rx_bytes += len;
 267	ewma_rate_add(&mdata->uapsd_nonagg_detect.rate, thr);
 268}
 269
 270static void iwl_mvm_rx_csum(struct ieee80211_sta *sta,
 271			    struct sk_buff *skb,
 272			    u32 status)
 273{
 274	struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
 275	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvmsta->vif);
 276
 277	if (mvmvif->features & NETIF_F_RXCSUM &&
 278	    status & RX_MPDU_RES_STATUS_CSUM_DONE &&
 279	    status & RX_MPDU_RES_STATUS_CSUM_OK)
 280		skb->ip_summed = CHECKSUM_UNNECESSARY;
 281}
 282
 283/*
 284 * iwl_mvm_rx_rx_mpdu - REPLY_RX_MPDU_CMD handler
 285 *
 286 * Handles the actual data of the Rx packet from the fw
 287 */
 288void iwl_mvm_rx_rx_mpdu(struct iwl_mvm *mvm, struct napi_struct *napi,
 289			struct iwl_rx_cmd_buffer *rxb)
 290{
 291	struct ieee80211_hdr *hdr;
 292	struct ieee80211_rx_status *rx_status;
 293	struct iwl_rx_packet *pkt = rxb_addr(rxb);
 294	struct iwl_rx_phy_info *phy_info;
 295	struct iwl_rx_mpdu_res_start *rx_res;
 296	struct ieee80211_sta *sta = NULL;
 297	struct sk_buff *skb;
 298	u32 len, pkt_len = iwl_rx_packet_payload_len(pkt);
 299	u32 rate_n_flags;
 300	u32 rx_pkt_status;
 301	u8 crypt_len = 0;
 302
 303	if (unlikely(pkt_len < sizeof(*rx_res))) {
 304		IWL_DEBUG_DROP(mvm, "Bad REPLY_RX_MPDU_CMD size\n");
 305		return;
 306	}
 307
 308	phy_info = &mvm->last_phy_info;
 309	rx_res = (struct iwl_rx_mpdu_res_start *)pkt->data;
 310	hdr = (struct ieee80211_hdr *)(pkt->data + sizeof(*rx_res));
 311	len = le16_to_cpu(rx_res->byte_count);
 312
 313	if (unlikely(len + sizeof(*rx_res) + sizeof(__le32) > pkt_len)) {
 314		IWL_DEBUG_DROP(mvm, "FW lied about packet len\n");
 315		return;
 316	}
 317
 318	rx_pkt_status = get_unaligned_le32((__le32 *)
 319		(pkt->data + sizeof(*rx_res) + len));
 320
 321	/* Dont use dev_alloc_skb(), we'll have enough headroom once
 322	 * ieee80211_hdr pulled.
 323	 */
 324	skb = alloc_skb(128, GFP_ATOMIC);
 325	if (!skb) {
 326		IWL_ERR(mvm, "alloc_skb failed\n");
 327		return;
 328	}
 329
 330	rx_status = IEEE80211_SKB_RXCB(skb);
 331
 332	/*
 333	 * Keep packets with CRC errors (and with overrun) for monitor mode
 334	 * (otherwise the firmware discards them) but mark them as bad.
 335	 */
 336	if (!(rx_pkt_status & RX_MPDU_RES_STATUS_CRC_OK) ||
 337	    !(rx_pkt_status & RX_MPDU_RES_STATUS_OVERRUN_OK)) {
 338		IWL_DEBUG_RX(mvm, "Bad CRC or FIFO: 0x%08X.\n", rx_pkt_status);
 339		rx_status->flag |= RX_FLAG_FAILED_FCS_CRC;
 340	}
 341
 342	/* This will be used in several places later */
 343	rate_n_flags = le32_to_cpu(phy_info->rate_n_flags);
 344
 345	/* rx_status carries information about the packet to mac80211 */
 346	rx_status->mactime = le64_to_cpu(phy_info->timestamp);
 347	rx_status->device_timestamp = le32_to_cpu(phy_info->system_timestamp);
 348	rx_status->band =
 349		(phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_BAND_24)) ?
 350				NL80211_BAND_2GHZ : NL80211_BAND_5GHZ;
 351	rx_status->freq =
 352		ieee80211_channel_to_frequency(le16_to_cpu(phy_info->channel),
 353					       rx_status->band);
 354
 355	/* TSF as indicated by the firmware  is at INA time */
 356	rx_status->flag |= RX_FLAG_MACTIME_PLCP_START;
 357
 358	iwl_mvm_get_signal_strength(mvm, phy_info, rx_status);
 359
 360	IWL_DEBUG_STATS_LIMIT(mvm, "Rssi %d, TSF %llu\n", rx_status->signal,
 361			      (unsigned long long)rx_status->mactime);
 362
 363	rcu_read_lock();
 364	if (rx_pkt_status & RX_MPDU_RES_STATUS_SRC_STA_FOUND) {
 365		u32 id = rx_pkt_status & RX_MPDU_RES_STATUS_STA_ID_MSK;
 366
 367		id >>= RX_MDPU_RES_STATUS_STA_ID_SHIFT;
 368
 369		if (!WARN_ON_ONCE(id >= mvm->fw->ucode_capa.num_stations)) {
 370			sta = rcu_dereference(mvm->fw_id_to_mac_id[id]);
 371			if (IS_ERR(sta))
 372				sta = NULL;
 373		}
 374	} else if (!is_multicast_ether_addr(hdr->addr2)) {
 375		/* This is fine since we prevent two stations with the same
 376		 * address from being added.
 377		 */
 378		sta = ieee80211_find_sta_by_ifaddr(mvm->hw, hdr->addr2, NULL);
 379	}
 380
 381	if (sta) {
 382		struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
 383		struct ieee80211_vif *vif = mvmsta->vif;
 384		struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 385
 386		/*
 387		 * Don't even try to decrypt a MCAST frame that was received
 388		 * before the managed vif is authorized, we'd fail anyway.
 389		 */
 390		if (is_multicast_ether_addr(hdr->addr1) &&
 391		    vif->type == NL80211_IFTYPE_STATION &&
 392		    !mvmvif->authorized &&
 393		    ieee80211_has_protected(hdr->frame_control)) {
 394			IWL_DEBUG_DROP(mvm, "MCAST before the vif is authorized\n");
 395			kfree_skb(skb);
 396			rcu_read_unlock();
 397			return;
 398		}
 399	}
 400
 401	/*
 402	 * drop the packet if it has failed being decrypted by HW
 403	 */
 404	if (iwl_mvm_set_mac80211_rx_flag(mvm, hdr, rx_status, rx_pkt_status,
 405					 &crypt_len)) {
 406		IWL_DEBUG_DROP(mvm, "Bad decryption results 0x%08x\n",
 407			       rx_pkt_status);
 408		kfree_skb(skb);
 409		rcu_read_unlock();
 410		return;
 411	}
 412
 413	if (sta) {
 414		struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
 415		struct ieee80211_vif *tx_blocked_vif =
 416			rcu_dereference(mvm->csa_tx_blocked_vif);
 417		struct iwl_fw_dbg_trigger_tlv *trig;
 418		struct ieee80211_vif *vif = mvmsta->vif;
 419
 420		/* We have tx blocked stations (with CS bit). If we heard
 421		 * frames from a blocked station on a new channel we can
 422		 * TX to it again.
 423		 */
 424		if (unlikely(tx_blocked_vif) && vif == tx_blocked_vif) {
 425			struct iwl_mvm_vif *mvmvif =
 426				iwl_mvm_vif_from_mac80211(tx_blocked_vif);
 427
 428			if (mvmvif->csa_target_freq == rx_status->freq)
 429				iwl_mvm_sta_modify_disable_tx_ap(mvm, sta,
 430								 false);
 431		}
 432
 433		rs_update_last_rssi(mvm, mvmsta, rx_status);
 434
 435		trig = iwl_fw_dbg_trigger_on(&mvm->fwrt,
 436					     ieee80211_vif_to_wdev(vif),
 437					     FW_DBG_TRIGGER_RSSI);
 438
 439		if (trig && ieee80211_is_beacon(hdr->frame_control)) {
 440			struct iwl_fw_dbg_trigger_low_rssi *rssi_trig;
 441			s32 rssi;
 442
 443			rssi_trig = (void *)trig->data;
 444			rssi = le32_to_cpu(rssi_trig->rssi);
 445
 446			if (rx_status->signal < rssi)
 447				iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
 448							NULL);
 449		}
 450
 451		if (!mvm->tcm.paused && len >= sizeof(*hdr) &&
 452		    !is_multicast_ether_addr(hdr->addr1) &&
 453		    ieee80211_is_data(hdr->frame_control))
 454			iwl_mvm_rx_handle_tcm(mvm, sta, hdr, len, phy_info,
 455					      rate_n_flags);
 456
 457		if (ieee80211_is_data(hdr->frame_control))
 458			iwl_mvm_rx_csum(sta, skb, rx_pkt_status);
 459	}
 460	rcu_read_unlock();
 461
 462	/* set the preamble flag if appropriate */
 463	if (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_SHORT_PREAMBLE))
 464		rx_status->enc_flags |= RX_ENC_FLAG_SHORTPRE;
 465
 466	if (phy_info->phy_flags & cpu_to_le16(RX_RES_PHY_FLAGS_AGG)) {
 467		/*
 468		 * We know which subframes of an A-MPDU belong
 469		 * together since we get a single PHY response
 470		 * from the firmware for all of them
 471		 */
 472		rx_status->flag |= RX_FLAG_AMPDU_DETAILS;
 473		rx_status->ampdu_reference = mvm->ampdu_ref;
 474	}
 475
 476	/* Set up the HT phy flags */
 477	switch (rate_n_flags & RATE_MCS_CHAN_WIDTH_MSK_V1) {
 478	case RATE_MCS_CHAN_WIDTH_20:
 479		break;
 480	case RATE_MCS_CHAN_WIDTH_40:
 481		rx_status->bw = RATE_INFO_BW_40;
 482		break;
 483	case RATE_MCS_CHAN_WIDTH_80:
 484		rx_status->bw = RATE_INFO_BW_80;
 485		break;
 486	case RATE_MCS_CHAN_WIDTH_160:
 487		rx_status->bw = RATE_INFO_BW_160;
 488		break;
 489	}
 490	if (!(rate_n_flags & RATE_MCS_CCK_MSK_V1) &&
 491	    rate_n_flags & RATE_MCS_SGI_MSK_V1)
 492		rx_status->enc_flags |= RX_ENC_FLAG_SHORT_GI;
 493	if (rate_n_flags & RATE_MCS_LDPC_MSK_V1)
 494		rx_status->enc_flags |= RX_ENC_FLAG_LDPC;
 495	if (rate_n_flags & RATE_MCS_HT_MSK_V1) {
 496		u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >>
 497				RATE_MCS_STBC_POS;
 498		rx_status->encoding = RX_ENC_HT;
 499		rx_status->rate_idx = rate_n_flags & RATE_HT_MCS_INDEX_MSK_V1;
 500		rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
 501	} else if (rate_n_flags & RATE_MCS_VHT_MSK_V1) {
 502		u8 stbc = (rate_n_flags & RATE_MCS_STBC_MSK) >>
 503				RATE_MCS_STBC_POS;
 504		rx_status->nss =
 505			FIELD_GET(RATE_MCS_NSS_MSK, rate_n_flags) + 1;
 506		rx_status->rate_idx = rate_n_flags & RATE_VHT_MCS_RATE_CODE_MSK;
 507		rx_status->encoding = RX_ENC_VHT;
 508		rx_status->enc_flags |= stbc << RX_ENC_FLAG_STBC_SHIFT;
 509		if (rate_n_flags & RATE_MCS_BF_MSK)
 510			rx_status->enc_flags |= RX_ENC_FLAG_BF;
 511	} else {
 512		int rate = iwl_mvm_legacy_rate_to_mac80211_idx(rate_n_flags,
 513							       rx_status->band);
 514
 515		if (WARN(rate < 0 || rate > 0xFF,
 516			 "Invalid rate flags 0x%x, band %d,\n",
 517			 rate_n_flags, rx_status->band)) {
 518			kfree_skb(skb);
 519			return;
 520		}
 521		rx_status->rate_idx = rate;
 522		/* override BW - it could be DUP and indicate the wrong BW */
 523		rx_status->bw = RATE_INFO_BW_20;
 524	}
 525
 526#ifdef CONFIG_IWLWIFI_DEBUGFS
 527	iwl_mvm_update_frame_stats(mvm, rate_n_flags,
 528				   rx_status->flag & RX_FLAG_AMPDU_DETAILS);
 529#endif
 530
 531	if (unlikely((ieee80211_is_beacon(hdr->frame_control) ||
 532		      ieee80211_is_probe_resp(hdr->frame_control)) &&
 533		     mvm->sched_scan_pass_all == SCHED_SCAN_PASS_ALL_ENABLED))
 534		mvm->sched_scan_pass_all = SCHED_SCAN_PASS_ALL_FOUND;
 535
 536	if (unlikely(ieee80211_is_beacon(hdr->frame_control) ||
 537		     ieee80211_is_probe_resp(hdr->frame_control)))
 538		rx_status->boottime_ns = ktime_get_boottime_ns();
 539
 540	iwl_mvm_pass_packet_to_mac80211(mvm, sta, napi, skb, hdr, len,
 541					crypt_len, rxb);
 542}
 543
 544struct iwl_mvm_stat_data {
 545	struct iwl_mvm *mvm;
 546	__le32 flags;
 547	__le32 mac_id;
 548	u8 beacon_filter_average_energy;
 549	__le32 *beacon_counter;
 550	u8 *beacon_average_energy;
 551};
 552
 553struct iwl_mvm_stat_data_all_macs {
 554	struct iwl_mvm *mvm;
 555	__le32 flags;
 556	struct iwl_stats_ntfy_per_mac *per_mac;
 557};
 558
 559static void iwl_mvm_update_link_sig(struct ieee80211_vif *vif, int sig,
 560				    struct iwl_mvm_vif_link_info *link_info,
 561				    struct ieee80211_bss_conf *bss_conf)
 562{
 563	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 564	struct iwl_mvm *mvm = mvmvif->mvm;
 565	int thold = bss_conf->cqm_rssi_thold;
 566	int hyst = bss_conf->cqm_rssi_hyst;
 567	int last_event;
 568
 569	if (sig == 0) {
 570		IWL_DEBUG_RX(mvm, "RSSI is 0 - skip signal based decision\n");
 571		return;
 572	}
 573
 574	link_info->bf_data.ave_beacon_signal = sig;
 575
 576	/* BT Coex */
 577	if (link_info->bf_data.bt_coex_min_thold !=
 578	    link_info->bf_data.bt_coex_max_thold) {
 579		last_event = link_info->bf_data.last_bt_coex_event;
 580		if (sig > link_info->bf_data.bt_coex_max_thold &&
 581		    (last_event <= link_info->bf_data.bt_coex_min_thold ||
 582		     last_event == 0)) {
 583			link_info->bf_data.last_bt_coex_event = sig;
 584			IWL_DEBUG_RX(mvm, "cqm_iterator bt coex high %d\n",
 585				     sig);
 586			iwl_mvm_bt_rssi_event(mvm, vif, RSSI_EVENT_HIGH);
 587		} else if (sig < link_info->bf_data.bt_coex_min_thold &&
 588			   (last_event >= link_info->bf_data.bt_coex_max_thold ||
 589			    last_event == 0)) {
 590			link_info->bf_data.last_bt_coex_event = sig;
 591			IWL_DEBUG_RX(mvm, "cqm_iterator bt coex low %d\n",
 592				     sig);
 593			iwl_mvm_bt_rssi_event(mvm, vif, RSSI_EVENT_LOW);
 594		}
 595	}
 596
 597	if (!(vif->driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
 598		return;
 599
 600	/* CQM Notification */
 601	last_event = link_info->bf_data.last_cqm_event;
 602	if (thold && sig < thold && (last_event == 0 ||
 603				     sig < last_event - hyst)) {
 604		link_info->bf_data.last_cqm_event = sig;
 605		IWL_DEBUG_RX(mvm, "cqm_iterator cqm low %d\n",
 606			     sig);
 607		ieee80211_cqm_rssi_notify(
 608			vif,
 609			NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW,
 610			sig,
 611			GFP_KERNEL);
 612	} else if (sig > thold &&
 613		   (last_event == 0 || sig > last_event + hyst)) {
 614		link_info->bf_data.last_cqm_event = sig;
 615		IWL_DEBUG_RX(mvm, "cqm_iterator cqm high %d\n",
 616			     sig);
 617		ieee80211_cqm_rssi_notify(
 618			vif,
 619			NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH,
 620			sig,
 621			GFP_KERNEL);
 622	}
 623}
 624
 625static void iwl_mvm_stat_iterator(void *_data, u8 *mac,
 626				  struct ieee80211_vif *vif)
 627{
 628	struct iwl_mvm_stat_data *data = _data;
 629	int sig = -data->beacon_filter_average_energy;
 630	u16 id = le32_to_cpu(data->mac_id);
 631	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 632	u16 vif_id = mvmvif->id;
 633
 634	/* This doesn't need the MAC ID check since it's not taking the
 635	 * data copied into the "data" struct, but rather the data from
 636	 * the notification directly.
 637	 */
 638	mvmvif->deflink.beacon_stats.num_beacons =
 639		le32_to_cpu(data->beacon_counter[vif_id]);
 640	mvmvif->deflink.beacon_stats.avg_signal =
 641		-data->beacon_average_energy[vif_id];
 642
 643	if (mvmvif->id != id)
 644		return;
 645
 646	if (vif->type != NL80211_IFTYPE_STATION)
 647		return;
 648
 649	/* make sure that beacon statistics don't go backwards with TCM
 650	 * request to clear statistics
 651	 */
 652	if (le32_to_cpu(data->flags) & IWL_STATISTICS_REPLY_FLG_CLEAR)
 653		mvmvif->deflink.beacon_stats.accu_num_beacons +=
 654			mvmvif->deflink.beacon_stats.num_beacons;
 655
 656	/* This is used in pre-MLO API so use deflink */
 657	iwl_mvm_update_link_sig(vif, sig, &mvmvif->deflink, &vif->bss_conf);
 658}
 659
 660static void iwl_mvm_stat_iterator_all_macs(void *_data, u8 *mac,
 661					   struct ieee80211_vif *vif)
 662{
 663	struct iwl_mvm_stat_data_all_macs *data = _data;
 664	struct iwl_stats_ntfy_per_mac *mac_stats;
 665	int sig;
 666	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
 667	u16 vif_id = mvmvif->id;
 668
 669	if (WARN_ONCE(vif_id >= MAC_INDEX_AUX, "invalid vif id: %d", vif_id))
 670		return;
 671
 672	if (vif->type != NL80211_IFTYPE_STATION)
 673		return;
 674
 675	mac_stats = &data->per_mac[vif_id];
 676
 677	mvmvif->deflink.beacon_stats.num_beacons =
 678		le32_to_cpu(mac_stats->beacon_counter);
 679	mvmvif->deflink.beacon_stats.avg_signal =
 680		-le32_to_cpu(mac_stats->beacon_average_energy);
 681
 682	/* make sure that beacon statistics don't go backwards with TCM
 683	 * request to clear statistics
 684	 */
 685	if (le32_to_cpu(data->flags) & IWL_STATISTICS_REPLY_FLG_CLEAR)
 686		mvmvif->deflink.beacon_stats.accu_num_beacons +=
 687			mvmvif->deflink.beacon_stats.num_beacons;
 688
 689	sig = -le32_to_cpu(mac_stats->beacon_filter_average_energy);
 690
 691	/* This is used in pre-MLO API so use deflink */
 692	iwl_mvm_update_link_sig(vif, sig, &mvmvif->deflink, &vif->bss_conf);
 693}
 694
 695static inline void
 696iwl_mvm_rx_stats_check_trigger(struct iwl_mvm *mvm, struct iwl_rx_packet *pkt)
 697{
 698	struct iwl_fw_dbg_trigger_tlv *trig;
 699	struct iwl_fw_dbg_trigger_stats *trig_stats;
 700	u32 trig_offset, trig_thold;
 701
 702	trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, NULL, FW_DBG_TRIGGER_STATS);
 703	if (!trig)
 704		return;
 705
 706	trig_stats = (void *)trig->data;
 707
 708	trig_offset = le32_to_cpu(trig_stats->stop_offset);
 709	trig_thold = le32_to_cpu(trig_stats->stop_threshold);
 710
 711	if (WARN_ON_ONCE(trig_offset >= iwl_rx_packet_payload_len(pkt)))
 712		return;
 713
 714	if (le32_to_cpup((__le32 *) (pkt->data + trig_offset)) < trig_thold)
 715		return;
 716
 717	iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, NULL);
 718}
 719
 720static void iwl_mvm_stats_energy_iter(void *_data,
 721				      struct ieee80211_sta *sta)
 722{
 723	struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
 724	u8 *energy = _data;
 725	u32 sta_id = mvmsta->deflink.sta_id;
 726
 727	if (WARN_ONCE(sta_id >= IWL_STATION_COUNT_MAX, "sta_id %d >= %d",
 728		      sta_id, IWL_STATION_COUNT_MAX))
 729		return;
 730
 731	if (energy[sta_id])
 732		mvmsta->deflink.avg_energy = energy[sta_id];
 733
 734}
 735
 736static void
 737iwl_mvm_update_tcm_from_stats(struct iwl_mvm *mvm, __le32 *air_time_le,
 738			      __le32 *rx_bytes_le)
 739{
 740	int i;
 741
 742	spin_lock(&mvm->tcm.lock);
 743	for (i = 0; i < NUM_MAC_INDEX_DRIVER; i++) {
 744		struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[i];
 745		u32 rx_bytes = le32_to_cpu(rx_bytes_le[i]);
 746		u32 airtime = le32_to_cpu(air_time_le[i]);
 747
 748		mdata->rx.airtime += airtime;
 749		mdata->uapsd_nonagg_detect.rx_bytes += rx_bytes;
 750		if (airtime) {
 751			/* re-init every time to store rate from FW */
 752			ewma_rate_init(&mdata->uapsd_nonagg_detect.rate);
 753			ewma_rate_add(&mdata->uapsd_nonagg_detect.rate,
 754				      rx_bytes * 8 / airtime);
 755		}
 756	}
 757	spin_unlock(&mvm->tcm.lock);
 758}
 759
 760static void iwl_mvm_handle_per_phy_stats(struct iwl_mvm *mvm,
 761					 struct iwl_stats_ntfy_per_phy *per_phy)
 762{
 763	int i;
 764
 765	for (i = 0; i < NUM_PHY_CTX; i++) {
 766		if (!mvm->phy_ctxts[i].ref)
 767			continue;
 768		mvm->phy_ctxts[i].channel_load_by_us =
 769			le32_to_cpu(per_phy[i].channel_load_by_us);
 770		mvm->phy_ctxts[i].channel_load_not_by_us =
 771			le32_to_cpu(per_phy[i].channel_load_not_by_us);
 772	}
 773}
 774
 775static void
 776iwl_mvm_stats_ver_15(struct iwl_mvm *mvm,
 777		     struct iwl_statistics_operational_ntfy *stats)
 778{
 779	struct iwl_mvm_stat_data_all_macs data = {
 780		.mvm = mvm,
 781		.flags = stats->flags,
 782		.per_mac = stats->per_mac,
 783	};
 784
 785	ieee80211_iterate_active_interfaces(mvm->hw,
 786					    IEEE80211_IFACE_ITER_NORMAL,
 787					    iwl_mvm_stat_iterator_all_macs,
 788					    &data);
 789	iwl_mvm_handle_per_phy_stats(mvm, stats->per_phy);
 790}
 791
 792static void
 793iwl_mvm_stats_ver_14(struct iwl_mvm *mvm,
 794		     struct iwl_statistics_operational_ntfy_ver_14 *stats)
 795{
 796	struct iwl_mvm_stat_data data = {
 797		.mvm = mvm,
 798	};
 799
 800	u8 beacon_average_energy[MAC_INDEX_AUX];
 801	__le32 flags;
 802	int i;
 803
 804	flags = stats->flags;
 805
 806	data.mac_id = stats->mac_id;
 807	data.beacon_filter_average_energy =
 808		le32_to_cpu(stats->beacon_filter_average_energy);
 809	data.flags = flags;
 810	data.beacon_counter = stats->beacon_counter;
 811
 812	for (i = 0; i < ARRAY_SIZE(beacon_average_energy); i++)
 813		beacon_average_energy[i] =
 814			le32_to_cpu(stats->beacon_average_energy[i]);
 815
 816	data.beacon_average_energy = beacon_average_energy;
 817
 818	ieee80211_iterate_active_interfaces(mvm->hw,
 819					    IEEE80211_IFACE_ITER_NORMAL,
 820					    iwl_mvm_stat_iterator,
 821					    &data);
 822}
 823
 824static bool iwl_mvm_verify_stats_len(struct iwl_mvm *mvm,
 825				     struct iwl_rx_packet *pkt,
 826				     u32 expected_size)
 827{
 828	struct iwl_statistics_ntfy_hdr *hdr;
 829
 830	if (WARN_ONCE(iwl_rx_packet_payload_len(pkt) < expected_size,
 831		      "received invalid statistics size (%d)!, expected_size: %d\n",
 832		      iwl_rx_packet_payload_len(pkt), expected_size))
 833		return false;
 834
 835	hdr = (void *)&pkt->data;
 836
 837	if (WARN_ONCE((hdr->type & IWL_STATISTICS_TYPE_MSK) != FW_STATISTICS_OPERATIONAL ||
 838		      hdr->version !=
 839		      iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP, STATISTICS_NOTIFICATION, 0),
 840		      "received unsupported hdr type %d, version %d\n",
 841		      hdr->type, hdr->version))
 842		return false;
 843
 844	if (WARN_ONCE(le16_to_cpu(hdr->size) != expected_size,
 845		      "received invalid statistics size in header (%d)!, expected_size: %d\n",
 846		      le16_to_cpu(hdr->size), expected_size))
 847		return false;
 848
 849	return true;
 850}
 851
 852static void
 853iwl_mvm_stat_iterator_all_links(struct iwl_mvm *mvm,
 854				struct iwl_stats_ntfy_per_link *per_link)
 855{
 856	u32 air_time[MAC_INDEX_AUX] = {};
 857	u32 rx_bytes[MAC_INDEX_AUX] = {};
 858	int fw_link_id;
 859
 860	/* driver uses link ID == MAC ID */
 861	for (fw_link_id = 0; fw_link_id < ARRAY_SIZE(mvm->vif_id_to_mac);
 862	     fw_link_id++) {
 863		struct iwl_stats_ntfy_per_link *link_stats;
 864		struct iwl_mvm_vif_link_info *link_info;
 865		struct iwl_mvm_vif *mvmvif;
 866		struct ieee80211_vif *vif;
 867		int link_id;
 868		int sig;
 869
 870		vif = iwl_mvm_rcu_dereference_vif_id(mvm, fw_link_id, false);
 871		if (!vif)
 872			continue;
 873
 874		if (vif->type != NL80211_IFTYPE_STATION)
 875			continue;
 876
 877		link_id = vif->bss_conf.link_id;
 878		if (link_id >= ARRAY_SIZE(mvmvif->link))
 879			continue;
 880
 881		mvmvif = iwl_mvm_vif_from_mac80211(vif);
 882		link_info = mvmvif->link[link_id];
 883		if (!link_info)
 884			continue;
 885
 886		link_stats = &per_link[fw_link_id];
 887
 888		link_info->beacon_stats.num_beacons =
 889			le32_to_cpu(link_stats->beacon_counter);
 890
 891		/* we basically just use the u8 to store 8 bits and then treat
 892		 * it as a s8 whenever we take it out to a different type.
 893		 */
 894		link_info->beacon_stats.avg_signal =
 895			-le32_to_cpu(link_stats->beacon_average_energy);
 896
 897		/* make sure that beacon statistics don't go backwards with TCM
 898		 * request to clear statistics
 899		 */
 900		if (mvm->statistics_clear)
 901			mvmvif->link[link_id]->beacon_stats.accu_num_beacons +=
 902				mvmvif->link[link_id]->beacon_stats.num_beacons;
 903
 904		sig = -le32_to_cpu(link_stats->beacon_filter_average_energy);
 905		iwl_mvm_update_link_sig(vif, sig, link_info, &vif->bss_conf);
 906
 907		if (WARN_ONCE(mvmvif->id >= MAC_INDEX_AUX,
 908			      "invalid mvmvif id: %d", mvmvif->id))
 909			continue;
 910
 911		air_time[mvmvif->id] +=
 912			le32_to_cpu(per_link[fw_link_id].air_time);
 913		rx_bytes[mvmvif->id] +=
 914			le32_to_cpu(per_link[fw_link_id].rx_bytes);
 915	}
 916
 917	/* Don't update in case the statistics are not cleared, since
 918	 * we will end up counting twice the same airtime, once in TCM
 919	 * request and once in statistics notification.
 920	 */
 921	if (mvm->statistics_clear) {
 922		__le32 air_time_le[MAC_INDEX_AUX];
 923		__le32 rx_bytes_le[MAC_INDEX_AUX];
 924		int vif_id;
 925
 926		for (vif_id = 0; vif_id < ARRAY_SIZE(air_time_le); vif_id++) {
 927			air_time_le[vif_id] = cpu_to_le32(air_time[vif_id]);
 928			rx_bytes_le[vif_id] = cpu_to_le32(rx_bytes[vif_id]);
 929		}
 930
 931		iwl_mvm_update_tcm_from_stats(mvm, air_time_le, rx_bytes_le);
 932	}
 933}
 934
 935void iwl_mvm_handle_rx_system_oper_stats(struct iwl_mvm *mvm,
 936					 struct iwl_rx_cmd_buffer *rxb)
 937{
 938	u8 average_energy[IWL_STATION_COUNT_MAX];
 939	struct iwl_rx_packet *pkt = rxb_addr(rxb);
 940	struct iwl_system_statistics_notif_oper *stats;
 941	int i;
 942	u32 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, STATISTICS_GROUP,
 943						STATISTICS_OPER_NOTIF, 0);
 944
 945	if (notif_ver != 3) {
 946		IWL_FW_CHECK_FAILED(mvm,
 947				    "Oper stats notif ver %d is not supported\n",
 948				    notif_ver);
 949		return;
 950	}
 951
 952	stats = (void *)&pkt->data;
 953	iwl_mvm_stat_iterator_all_links(mvm, stats->per_link);
 954
 955	for (i = 0; i < ARRAY_SIZE(average_energy); i++)
 956		average_energy[i] =
 957			le32_to_cpu(stats->per_sta[i].average_energy);
 958
 959	ieee80211_iterate_stations_atomic(mvm->hw, iwl_mvm_stats_energy_iter,
 960					  average_energy);
 961	iwl_mvm_handle_per_phy_stats(mvm, stats->per_phy);
 962}
 963
 964void iwl_mvm_handle_rx_system_oper_part1_stats(struct iwl_mvm *mvm,
 965					       struct iwl_rx_cmd_buffer *rxb)
 966{
 967	struct iwl_rx_packet *pkt = rxb_addr(rxb);
 968	struct iwl_system_statistics_part1_notif_oper *part1_stats;
 969	int i;
 970	u32 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, STATISTICS_GROUP,
 971						STATISTICS_OPER_PART1_NOTIF, 0);
 972
 973	if (notif_ver != 4) {
 974		IWL_FW_CHECK_FAILED(mvm,
 975				    "Part1 stats notif ver %d is not supported\n",
 976				    notif_ver);
 977		return;
 978	}
 979
 980	part1_stats = (void *)&pkt->data;
 981	mvm->radio_stats.rx_time = 0;
 982	mvm->radio_stats.tx_time = 0;
 983	for (i = 0; i < ARRAY_SIZE(part1_stats->per_link); i++) {
 984		mvm->radio_stats.rx_time +=
 985			le64_to_cpu(part1_stats->per_link[i].rx_time);
 986		mvm->radio_stats.tx_time +=
 987			le64_to_cpu(part1_stats->per_link[i].tx_time);
 988	}
 989}
 990
 991static void
 992iwl_mvm_handle_rx_statistics_tlv(struct iwl_mvm *mvm,
 993				 struct iwl_rx_packet *pkt)
 994{
 995	u8 average_energy[IWL_STATION_COUNT_MAX];
 996	__le32 air_time[MAC_INDEX_AUX];
 997	__le32 rx_bytes[MAC_INDEX_AUX];
 998	__le32 flags = 0;
 999	int i;
1000	u32 notif_ver = iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
1001					      STATISTICS_NOTIFICATION, 0);
1002
1003	if (WARN_ONCE(notif_ver > 15,
1004		      "invalid statistics version id: %d\n", notif_ver))
1005		return;
1006
1007	if (notif_ver == 14) {
1008		struct iwl_statistics_operational_ntfy_ver_14 *stats =
1009			(void *)pkt->data;
1010
1011		if (!iwl_mvm_verify_stats_len(mvm, pkt, sizeof(*stats)))
1012			return;
1013
1014		iwl_mvm_stats_ver_14(mvm, stats);
1015
1016		flags = stats->flags;
1017		mvm->radio_stats.rx_time = le64_to_cpu(stats->rx_time);
1018		mvm->radio_stats.tx_time = le64_to_cpu(stats->tx_time);
1019		mvm->radio_stats.on_time_rf = le64_to_cpu(stats->on_time_rf);
1020		mvm->radio_stats.on_time_scan =
1021			le64_to_cpu(stats->on_time_scan);
1022
1023		for (i = 0; i < ARRAY_SIZE(average_energy); i++)
1024			average_energy[i] = le32_to_cpu(stats->average_energy[i]);
1025
1026		for (i = 0; i < ARRAY_SIZE(air_time); i++) {
1027			air_time[i] = stats->air_time[i];
1028			rx_bytes[i] = stats->rx_bytes[i];
1029		}
1030	}
1031
1032	if (notif_ver == 15) {
1033		struct iwl_statistics_operational_ntfy *stats =
1034			(void *)pkt->data;
1035
1036		if (!iwl_mvm_verify_stats_len(mvm, pkt, sizeof(*stats)))
1037			return;
1038
1039		iwl_mvm_stats_ver_15(mvm, stats);
1040
1041		flags = stats->flags;
1042		mvm->radio_stats.rx_time = le64_to_cpu(stats->rx_time);
1043		mvm->radio_stats.tx_time = le64_to_cpu(stats->tx_time);
1044		mvm->radio_stats.on_time_rf = le64_to_cpu(stats->on_time_rf);
1045		mvm->radio_stats.on_time_scan =
1046			le64_to_cpu(stats->on_time_scan);
1047
1048		for (i = 0; i < ARRAY_SIZE(average_energy); i++)
1049			average_energy[i] =
1050				le32_to_cpu(stats->per_sta[i].average_energy);
1051
1052		for (i = 0; i < ARRAY_SIZE(air_time); i++) {
1053			air_time[i] = stats->per_mac[i].air_time;
1054			rx_bytes[i] = stats->per_mac[i].rx_bytes;
1055		}
1056	}
1057
1058	iwl_mvm_rx_stats_check_trigger(mvm, pkt);
1059
1060	ieee80211_iterate_stations_atomic(mvm->hw, iwl_mvm_stats_energy_iter,
1061					  average_energy);
1062	/*
1063	 * Don't update in case the statistics are not cleared, since
1064	 * we will end up counting twice the same airtime, once in TCM
1065	 * request and once in statistics notification.
1066	 */
1067	if (le32_to_cpu(flags) & IWL_STATISTICS_REPLY_FLG_CLEAR)
1068		iwl_mvm_update_tcm_from_stats(mvm, air_time, rx_bytes);
1069}
1070
1071void iwl_mvm_handle_rx_statistics(struct iwl_mvm *mvm,
1072				  struct iwl_rx_packet *pkt)
1073{
1074	struct iwl_mvm_stat_data data = {
1075		.mvm = mvm,
1076	};
1077	__le32 *bytes, *air_time, flags;
1078	int expected_size;
1079	u8 *energy;
1080	u8 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw,
1081					   WIDE_ID(SYSTEM_GROUP,
1082						   SYSTEM_STATISTICS_CMD),
1083					   IWL_FW_CMD_VER_UNKNOWN);
1084
1085	if (cmd_ver != IWL_FW_CMD_VER_UNKNOWN)
1086		return;
1087
1088	/* From ver 14 and up we use TLV statistics format */
1089	if (iwl_fw_lookup_notif_ver(mvm->fw, LEGACY_GROUP,
1090				    STATISTICS_NOTIFICATION, 0) >= 14)
1091		return iwl_mvm_handle_rx_statistics_tlv(mvm, pkt);
1092
1093	if (!iwl_mvm_has_new_rx_stats_api(mvm)) {
1094		if (iwl_mvm_has_new_rx_api(mvm))
1095			expected_size = sizeof(struct iwl_notif_statistics_v11);
1096		else
1097			expected_size = sizeof(struct iwl_notif_statistics_v10);
1098	} else {
1099		expected_size = sizeof(struct iwl_notif_statistics);
1100	}
1101
1102	if (WARN_ONCE(iwl_rx_packet_payload_len(pkt) != expected_size,
1103		      "received invalid statistics size (%d)!\n",
1104		      iwl_rx_packet_payload_len(pkt)))
1105		return;
1106
1107	if (!iwl_mvm_has_new_rx_stats_api(mvm)) {
1108		struct iwl_notif_statistics_v11 *stats = (void *)&pkt->data;
1109
1110		data.mac_id = stats->rx.general.mac_id;
1111		data.beacon_filter_average_energy =
1112			stats->general.common.beacon_filter_average_energy;
1113
1114		mvm->rx_stats_v3 = stats->rx;
1115
1116		mvm->radio_stats.rx_time =
1117			le64_to_cpu(stats->general.common.rx_time);
1118		mvm->radio_stats.tx_time =
1119			le64_to_cpu(stats->general.common.tx_time);
1120		mvm->radio_stats.on_time_rf =
1121			le64_to_cpu(stats->general.common.on_time_rf);
1122		mvm->radio_stats.on_time_scan =
1123			le64_to_cpu(stats->general.common.on_time_scan);
1124
1125		data.beacon_counter = stats->general.beacon_counter;
1126		data.beacon_average_energy =
1127			stats->general.beacon_average_energy;
1128		flags = stats->flag;
1129	} else {
1130		struct iwl_notif_statistics *stats = (void *)&pkt->data;
1131
1132		data.mac_id = stats->rx.general.mac_id;
1133		data.beacon_filter_average_energy =
1134			stats->general.common.beacon_filter_average_energy;
1135
1136		mvm->rx_stats = stats->rx;
1137
1138		mvm->radio_stats.rx_time =
1139			le64_to_cpu(stats->general.common.rx_time);
1140		mvm->radio_stats.tx_time =
1141			le64_to_cpu(stats->general.common.tx_time);
1142		mvm->radio_stats.on_time_rf =
1143			le64_to_cpu(stats->general.common.on_time_rf);
1144		mvm->radio_stats.on_time_scan =
1145			le64_to_cpu(stats->general.common.on_time_scan);
1146
1147		data.beacon_counter = stats->general.beacon_counter;
1148		data.beacon_average_energy =
1149			stats->general.beacon_average_energy;
1150		flags = stats->flag;
1151	}
1152	data.flags = flags;
1153
1154	iwl_mvm_rx_stats_check_trigger(mvm, pkt);
1155
1156	ieee80211_iterate_active_interfaces(mvm->hw,
1157					    IEEE80211_IFACE_ITER_NORMAL,
1158					    iwl_mvm_stat_iterator,
1159					    &data);
1160
1161	if (!iwl_mvm_has_new_rx_api(mvm))
1162		return;
1163
1164	if (!iwl_mvm_has_new_rx_stats_api(mvm)) {
1165		struct iwl_notif_statistics_v11 *v11 = (void *)&pkt->data;
1166
1167		energy = (void *)&v11->load_stats.avg_energy;
1168		bytes = (void *)&v11->load_stats.byte_count;
1169		air_time = (void *)&v11->load_stats.air_time;
1170	} else {
1171		struct iwl_notif_statistics *stats = (void *)&pkt->data;
1172
1173		energy = (void *)&stats->load_stats.avg_energy;
1174		bytes = (void *)&stats->load_stats.byte_count;
1175		air_time = (void *)&stats->load_stats.air_time;
1176	}
1177	ieee80211_iterate_stations_atomic(mvm->hw, iwl_mvm_stats_energy_iter,
1178					  energy);
1179
1180	/*
1181	 * Don't update in case the statistics are not cleared, since
1182	 * we will end up counting twice the same airtime, once in TCM
1183	 * request and once in statistics notification.
1184	 */
1185	if (le32_to_cpu(flags) & IWL_STATISTICS_REPLY_FLG_CLEAR)
1186		iwl_mvm_update_tcm_from_stats(mvm, air_time, bytes);
1187
1188}
1189
1190void iwl_mvm_rx_statistics(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
1191{
1192	iwl_mvm_handle_rx_statistics(mvm, rxb_addr(rxb));
1193}
1194
1195void iwl_mvm_window_status_notif(struct iwl_mvm *mvm,
1196				 struct iwl_rx_cmd_buffer *rxb)
1197{
1198	struct iwl_rx_packet *pkt = rxb_addr(rxb);
1199	struct iwl_ba_window_status_notif *notif = (void *)pkt->data;
1200	int i;
1201
1202	BUILD_BUG_ON(ARRAY_SIZE(notif->ra_tid) != BA_WINDOW_STREAMS_MAX);
1203	BUILD_BUG_ON(ARRAY_SIZE(notif->mpdu_rx_count) != BA_WINDOW_STREAMS_MAX);
1204	BUILD_BUG_ON(ARRAY_SIZE(notif->bitmap) != BA_WINDOW_STREAMS_MAX);
1205	BUILD_BUG_ON(ARRAY_SIZE(notif->start_seq_num) != BA_WINDOW_STREAMS_MAX);
1206
1207	rcu_read_lock();
1208	for (i = 0; i < BA_WINDOW_STREAMS_MAX; i++) {
1209		struct ieee80211_sta *sta;
1210		u8 sta_id, tid;
1211		u64 bitmap;
1212		u32 ssn;
1213		u16 ratid;
1214		u16 received_mpdu;
1215
1216		ratid = le16_to_cpu(notif->ra_tid[i]);
1217		/* check that this TID is valid */
1218		if (!(ratid & BA_WINDOW_STATUS_VALID_MSK))
1219			continue;
1220
1221		received_mpdu = le16_to_cpu(notif->mpdu_rx_count[i]);
1222		if (received_mpdu == 0)
1223			continue;
1224
1225		tid = ratid & BA_WINDOW_STATUS_TID_MSK;
1226		/* get the station */
1227		sta_id = (ratid & BA_WINDOW_STATUS_STA_ID_MSK)
1228			 >> BA_WINDOW_STATUS_STA_ID_POS;
1229		sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
1230		if (IS_ERR_OR_NULL(sta))
1231			continue;
1232		bitmap = le64_to_cpu(notif->bitmap[i]);
1233		ssn = le32_to_cpu(notif->start_seq_num[i]);
1234
1235		/* update mac80211 with the bitmap for the reordering buffer */
1236		ieee80211_mark_rx_ba_filtered_frames(sta, tid, ssn, bitmap,
1237						     received_mpdu);
1238	}
1239	rcu_read_unlock();
1240}