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1// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause2/*3 * Copyright (C) 2012-2015, 2018-2024 Intel Corporation4 * Copyright (C) 2013-2015 Intel Mobile Communications GmbH5 * Copyright (C) 2016-2017 Intel Deutschland GmbH6 */7#include <net/mac80211.h>8 9#include "mvm.h"10#include "sta.h"11#include "rs.h"12 13/*14 * New version of ADD_STA_sta command added new fields at the end of the15 * structure, so sending the size of the relevant API's structure is enough to16 * support both API versions.17 */18static inline int iwl_mvm_add_sta_cmd_size(struct iwl_mvm *mvm)19{20	if (iwl_mvm_has_new_rx_api(mvm) ||21	    fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))22		return sizeof(struct iwl_mvm_add_sta_cmd);23	else24		return sizeof(struct iwl_mvm_add_sta_cmd_v7);25}26 27int iwl_mvm_find_free_sta_id(struct iwl_mvm *mvm, enum nl80211_iftype iftype)28{29	int sta_id;30	u32 reserved_ids = 0;31 32	BUILD_BUG_ON(IWL_STATION_COUNT_MAX > 32);33	WARN_ON_ONCE(test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status));34 35	lockdep_assert_held(&mvm->mutex);36 37	/* d0i3/d3 assumes the AP's sta_id (of sta vif) is 0. reserve it. */38	if (iftype != NL80211_IFTYPE_STATION)39		reserved_ids = BIT(0);40 41	/* Don't take rcu_read_lock() since we are protected by mvm->mutex */42	for (sta_id = 0; sta_id < mvm->fw->ucode_capa.num_stations; sta_id++) {43		if (BIT(sta_id) & reserved_ids)44			continue;45 46		if (!rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],47					       lockdep_is_held(&mvm->mutex)))48			return sta_id;49	}50	return IWL_MVM_INVALID_STA;51}52 53/* Calculate the ampdu density and max size */54u32 iwl_mvm_get_sta_ampdu_dens(struct ieee80211_link_sta *link_sta,55			       struct ieee80211_bss_conf *link_conf,56			       u32 *_agg_size)57{58	u32 agg_size = 0, mpdu_dens = 0;59 60	if (WARN_ON(!link_sta))61		return 0;62 63	/* Note that we always use only legacy & highest supported PPDUs, so64	 * of Draft P802.11be D.30 Table 10-12a--Fields used for calculating65	 * the maximum A-MPDU size of various PPDU types in different bands,66	 * we only need to worry about the highest supported PPDU type here.67	 */68 69	if (link_sta->ht_cap.ht_supported) {70		agg_size = link_sta->ht_cap.ampdu_factor;71		mpdu_dens = link_sta->ht_cap.ampdu_density;72	}73 74	if (link_conf->chanreq.oper.chan->band == NL80211_BAND_6GHZ) {75		/* overwrite HT values on 6 GHz */76		mpdu_dens = le16_get_bits(link_sta->he_6ghz_capa.capa,77					  IEEE80211_HE_6GHZ_CAP_MIN_MPDU_START);78		agg_size = le16_get_bits(link_sta->he_6ghz_capa.capa,79					 IEEE80211_HE_6GHZ_CAP_MAX_AMPDU_LEN_EXP);80	} else if (link_sta->vht_cap.vht_supported) {81		/* if VHT supported overwrite HT value */82		agg_size = u32_get_bits(link_sta->vht_cap.cap,83					IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK);84	}85 86	/* D6.0 10.12.2 A-MPDU length limit rules87	 * A STA indicates the maximum length of the A-MPDU preEOF padding88	 * that it can receive in an HE PPDU in the Maximum A-MPDU Length89	 * Exponent field in its HT Capabilities, VHT Capabilities,90	 * and HE 6 GHz Band Capabilities elements (if present) and the91	 * Maximum AMPDU Length Exponent Extension field in its HE92	 * Capabilities element93	 */94	if (link_sta->he_cap.has_he)95		agg_size +=96			u8_get_bits(link_sta->he_cap.he_cap_elem.mac_cap_info[3],97				    IEEE80211_HE_MAC_CAP3_MAX_AMPDU_LEN_EXP_MASK);98 99	if (link_sta->eht_cap.has_eht)100		agg_size += u8_get_bits(link_sta->eht_cap.eht_cap_elem.mac_cap_info[1],101					IEEE80211_EHT_MAC_CAP1_MAX_AMPDU_LEN_MASK);102 103	/* Limit to max A-MPDU supported by FW */104	agg_size = min_t(u32, agg_size,105			 STA_FLG_MAX_AGG_SIZE_4M >> STA_FLG_MAX_AGG_SIZE_SHIFT);106 107	*_agg_size = agg_size;108	return mpdu_dens;109}110 111u8 iwl_mvm_get_sta_uapsd_acs(struct ieee80211_sta *sta)112{113	u8 uapsd_acs = 0;114 115	if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BK)116		uapsd_acs |= BIT(AC_BK);117	if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_BE)118		uapsd_acs |= BIT(AC_BE);119	if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VI)120		uapsd_acs |= BIT(AC_VI);121	if (sta->uapsd_queues & IEEE80211_WMM_IE_STA_QOSINFO_AC_VO)122		uapsd_acs |= BIT(AC_VO);123 124	return uapsd_acs | uapsd_acs << 4;125}126 127/* send station add/update command to firmware */128int iwl_mvm_sta_send_to_fw(struct iwl_mvm *mvm, struct ieee80211_sta *sta,129			   bool update, unsigned int flags)130{131	struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);132	struct iwl_mvm_add_sta_cmd add_sta_cmd = {133		.sta_id = mvm_sta->deflink.sta_id,134		.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color),135		.add_modify = update ? 1 : 0,136		.station_flags_msk = cpu_to_le32(STA_FLG_FAT_EN_MSK |137						 STA_FLG_MIMO_EN_MSK |138						 STA_FLG_RTS_MIMO_PROT),139		.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg),140	};141	int ret;142	u32 status;143	u32 agg_size = 0, mpdu_dens = 0;144 145	if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))146		add_sta_cmd.station_type = mvm_sta->sta_type;147 148	if (!update || (flags & STA_MODIFY_QUEUES)) {149		memcpy(&add_sta_cmd.addr, sta->addr, ETH_ALEN);150 151		if (!iwl_mvm_has_new_tx_api(mvm)) {152			add_sta_cmd.tfd_queue_msk =153				cpu_to_le32(mvm_sta->tfd_queue_msk);154 155			if (flags & STA_MODIFY_QUEUES)156				add_sta_cmd.modify_mask |= STA_MODIFY_QUEUES;157		} else {158			WARN_ON(flags & STA_MODIFY_QUEUES);159		}160	}161 162	switch (sta->deflink.bandwidth) {163	case IEEE80211_STA_RX_BW_320:164	case IEEE80211_STA_RX_BW_160:165		add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_160MHZ);166		fallthrough;167	case IEEE80211_STA_RX_BW_80:168		add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_80MHZ);169		fallthrough;170	case IEEE80211_STA_RX_BW_40:171		add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_FAT_EN_40MHZ);172		fallthrough;173	case IEEE80211_STA_RX_BW_20:174		if (sta->deflink.ht_cap.ht_supported)175			add_sta_cmd.station_flags |=176				cpu_to_le32(STA_FLG_FAT_EN_20MHZ);177		break;178	}179 180	switch (sta->deflink.rx_nss) {181	case 1:182		add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO);183		break;184	case 2:185		add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO2);186		break;187	case 3 ... 8:188		add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_MIMO3);189		break;190	}191 192	switch (sta->deflink.smps_mode) {193	case IEEE80211_SMPS_AUTOMATIC:194	case IEEE80211_SMPS_NUM_MODES:195		WARN_ON(1);196		break;197	case IEEE80211_SMPS_STATIC:198		/* override NSS */199		add_sta_cmd.station_flags &= ~cpu_to_le32(STA_FLG_MIMO_EN_MSK);200		add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_MIMO_EN_SISO);201		break;202	case IEEE80211_SMPS_DYNAMIC:203		add_sta_cmd.station_flags |= cpu_to_le32(STA_FLG_RTS_MIMO_PROT);204		break;205	case IEEE80211_SMPS_OFF:206		/* nothing */207		break;208	}209 210	if (sta->deflink.ht_cap.ht_supported ||211	    mvm_sta->vif->bss_conf.chanreq.oper.chan->band == NL80211_BAND_6GHZ)212		add_sta_cmd.station_flags_msk |=213			cpu_to_le32(STA_FLG_MAX_AGG_SIZE_MSK |214				    STA_FLG_AGG_MPDU_DENS_MSK);215 216	mpdu_dens = iwl_mvm_get_sta_ampdu_dens(&sta->deflink,217					       &mvm_sta->vif->bss_conf,218					       &agg_size);219	add_sta_cmd.station_flags |=220		cpu_to_le32(agg_size << STA_FLG_MAX_AGG_SIZE_SHIFT);221	add_sta_cmd.station_flags |=222		cpu_to_le32(mpdu_dens << STA_FLG_AGG_MPDU_DENS_SHIFT);223 224	if (mvm_sta->sta_state >= IEEE80211_STA_ASSOC)225		add_sta_cmd.assoc_id = cpu_to_le16(sta->aid);226 227	if (sta->wme) {228		add_sta_cmd.modify_mask |= STA_MODIFY_UAPSD_ACS;229		add_sta_cmd.uapsd_acs = iwl_mvm_get_sta_uapsd_acs(sta);230		add_sta_cmd.sp_length = sta->max_sp ? sta->max_sp * 2 : 128;231	}232 233	status = ADD_STA_SUCCESS;234	ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,235					  iwl_mvm_add_sta_cmd_size(mvm),236					  &add_sta_cmd, &status);237	if (ret)238		return ret;239 240	switch (status & IWL_ADD_STA_STATUS_MASK) {241	case ADD_STA_SUCCESS:242		IWL_DEBUG_ASSOC(mvm, "ADD_STA PASSED\n");243		break;244	default:245		ret = -EIO;246		IWL_ERR(mvm, "ADD_STA failed\n");247		break;248	}249 250	return ret;251}252 253static void iwl_mvm_rx_agg_session_expired(struct timer_list *t)254{255	struct iwl_mvm_baid_data *data =256		from_timer(data, t, session_timer);257	struct iwl_mvm_baid_data __rcu **rcu_ptr = data->rcu_ptr;258	struct iwl_mvm_baid_data *ba_data;259	struct ieee80211_sta *sta;260	struct iwl_mvm_sta *mvm_sta;261	unsigned long timeout;262	unsigned int sta_id;263 264	rcu_read_lock();265 266	ba_data = rcu_dereference(*rcu_ptr);267 268	if (WARN_ON(!ba_data))269		goto unlock;270 271	if (!ba_data->timeout)272		goto unlock;273 274	timeout = ba_data->last_rx + TU_TO_JIFFIES(ba_data->timeout * 2);275	if (time_is_after_jiffies(timeout)) {276		mod_timer(&ba_data->session_timer, timeout);277		goto unlock;278	}279 280	/* Timer expired */281	sta_id = ffs(ba_data->sta_mask) - 1; /* don't care which one */282	sta = rcu_dereference(ba_data->mvm->fw_id_to_mac_id[sta_id]);283 284	/*285	 * sta should be valid unless the following happens:286	 * The firmware asserts which triggers a reconfig flow, but287	 * the reconfig fails before we set the pointer to sta into288	 * the fw_id_to_mac_id pointer table. Mac80211 can't stop289	 * A-MDPU and hence the timer continues to run. Then, the290	 * timer expires and sta is NULL.291	 */292	if (IS_ERR_OR_NULL(sta))293		goto unlock;294 295	mvm_sta = iwl_mvm_sta_from_mac80211(sta);296	ieee80211_rx_ba_timer_expired(mvm_sta->vif,297				      sta->addr, ba_data->tid);298unlock:299	rcu_read_unlock();300}301 302/* Disable aggregations for a bitmap of TIDs for a given station */303static int iwl_mvm_invalidate_sta_queue(struct iwl_mvm *mvm, int queue,304					unsigned long disable_agg_tids,305					bool remove_queue)306{307	struct iwl_mvm_add_sta_cmd cmd = {};308	struct ieee80211_sta *sta;309	struct iwl_mvm_sta *mvmsta;310	u32 status;311	u8 sta_id;312 313	if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))314		return -EINVAL;315 316	sta_id = mvm->queue_info[queue].ra_sta_id;317 318	rcu_read_lock();319 320	sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);321 322	if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) {323		rcu_read_unlock();324		return -EINVAL;325	}326 327	mvmsta = iwl_mvm_sta_from_mac80211(sta);328 329	mvmsta->tid_disable_agg |= disable_agg_tids;330 331	cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color);332	cmd.sta_id = mvmsta->deflink.sta_id;333	cmd.add_modify = STA_MODE_MODIFY;334	cmd.modify_mask = STA_MODIFY_QUEUES;335	if (disable_agg_tids)336		cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX;337	if (remove_queue)338		cmd.modify_mask |= STA_MODIFY_QUEUE_REMOVAL;339	cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk);340	cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg);341 342	rcu_read_unlock();343 344	/* Notify FW of queue removal from the STA queues */345	status = ADD_STA_SUCCESS;346	return iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,347					   iwl_mvm_add_sta_cmd_size(mvm),348					   &cmd, &status);349}350 351static int iwl_mvm_disable_txq(struct iwl_mvm *mvm, struct ieee80211_sta *sta,352			       int sta_id, u16 *queueptr, u8 tid)353{354	int queue = *queueptr;355	struct iwl_scd_txq_cfg_cmd cmd = {356		.scd_queue = queue,357		.action = SCD_CFG_DISABLE_QUEUE,358	};359	int ret;360 361	lockdep_assert_held(&mvm->mutex);362 363	if (iwl_mvm_has_new_tx_api(mvm)) {364		if (mvm->sta_remove_requires_queue_remove) {365			u32 cmd_id = WIDE_ID(DATA_PATH_GROUP,366					     SCD_QUEUE_CONFIG_CMD);367			struct iwl_scd_queue_cfg_cmd remove_cmd = {368				.operation = cpu_to_le32(IWL_SCD_QUEUE_REMOVE),369				.u.remove.sta_mask = cpu_to_le32(BIT(sta_id)),370			};371 372			if (tid == IWL_MAX_TID_COUNT)373				tid = IWL_MGMT_TID;374 375			remove_cmd.u.remove.tid = cpu_to_le32(tid);376 377			ret = iwl_mvm_send_cmd_pdu(mvm, cmd_id, 0,378						   sizeof(remove_cmd),379						   &remove_cmd);380		} else {381			ret = 0;382		}383 384		iwl_trans_txq_free(mvm->trans, queue);385		*queueptr = IWL_MVM_INVALID_QUEUE;386 387		return ret;388	}389 390	if (WARN_ON(mvm->queue_info[queue].tid_bitmap == 0))391		return 0;392 393	mvm->queue_info[queue].tid_bitmap &= ~BIT(tid);394 395	cmd.action = mvm->queue_info[queue].tid_bitmap ?396		SCD_CFG_ENABLE_QUEUE : SCD_CFG_DISABLE_QUEUE;397	if (cmd.action == SCD_CFG_DISABLE_QUEUE)398		mvm->queue_info[queue].status = IWL_MVM_QUEUE_FREE;399 400	IWL_DEBUG_TX_QUEUES(mvm,401			    "Disabling TXQ #%d tids=0x%x\n",402			    queue,403			    mvm->queue_info[queue].tid_bitmap);404 405	/* If the queue is still enabled - nothing left to do in this func */406	if (cmd.action == SCD_CFG_ENABLE_QUEUE)407		return 0;408 409	cmd.sta_id = mvm->queue_info[queue].ra_sta_id;410	cmd.tid = mvm->queue_info[queue].txq_tid;411 412	/* Make sure queue info is correct even though we overwrite it */413	WARN(mvm->queue_info[queue].tid_bitmap,414	     "TXQ #%d info out-of-sync - tids=0x%x\n",415	     queue, mvm->queue_info[queue].tid_bitmap);416 417	/* If we are here - the queue is freed and we can zero out these vals */418	mvm->queue_info[queue].tid_bitmap = 0;419 420	if (sta) {421		struct iwl_mvm_txq *mvmtxq =422			iwl_mvm_txq_from_tid(sta, tid);423 424		spin_lock_bh(&mvm->add_stream_lock);425		list_del_init(&mvmtxq->list);426		clear_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state);427		mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE;428		spin_unlock_bh(&mvm->add_stream_lock);429	}430 431	/* Regardless if this is a reserved TXQ for a STA - mark it as false */432	mvm->queue_info[queue].reserved = false;433 434	iwl_trans_txq_disable(mvm->trans, queue, false);435	ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0,436				   sizeof(struct iwl_scd_txq_cfg_cmd), &cmd);437 438	if (ret)439		IWL_ERR(mvm, "Failed to disable queue %d (ret=%d)\n",440			queue, ret);441	return ret;442}443 444static int iwl_mvm_get_queue_agg_tids(struct iwl_mvm *mvm, int queue)445{446	struct ieee80211_sta *sta;447	struct iwl_mvm_sta *mvmsta;448	unsigned long tid_bitmap;449	unsigned long agg_tids = 0;450	u8 sta_id;451	int tid;452 453	lockdep_assert_held(&mvm->mutex);454 455	if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))456		return -EINVAL;457 458	sta_id = mvm->queue_info[queue].ra_sta_id;459	tid_bitmap = mvm->queue_info[queue].tid_bitmap;460 461	sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],462					lockdep_is_held(&mvm->mutex));463 464	if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))465		return -EINVAL;466 467	mvmsta = iwl_mvm_sta_from_mac80211(sta);468 469	spin_lock_bh(&mvmsta->lock);470	for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {471		if (mvmsta->tid_data[tid].state == IWL_AGG_ON)472			agg_tids |= BIT(tid);473	}474	spin_unlock_bh(&mvmsta->lock);475 476	return agg_tids;477}478 479/*480 * Remove a queue from a station's resources.481 * Note that this only marks as free. It DOESN'T delete a BA agreement, and482 * doesn't disable the queue483 */484static int iwl_mvm_remove_sta_queue_marking(struct iwl_mvm *mvm, int queue)485{486	struct ieee80211_sta *sta;487	struct iwl_mvm_sta *mvmsta;488	unsigned long tid_bitmap;489	unsigned long disable_agg_tids = 0;490	u8 sta_id;491	int tid;492 493	lockdep_assert_held(&mvm->mutex);494 495	if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))496		return -EINVAL;497 498	sta_id = mvm->queue_info[queue].ra_sta_id;499	tid_bitmap = mvm->queue_info[queue].tid_bitmap;500 501	rcu_read_lock();502 503	sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);504 505	if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta))) {506		rcu_read_unlock();507		return 0;508	}509 510	mvmsta = iwl_mvm_sta_from_mac80211(sta);511 512	spin_lock_bh(&mvmsta->lock);513	/* Unmap MAC queues and TIDs from this queue */514	for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {515		struct iwl_mvm_txq *mvmtxq =516			iwl_mvm_txq_from_tid(sta, tid);517 518		if (mvmsta->tid_data[tid].state == IWL_AGG_ON)519			disable_agg_tids |= BIT(tid);520		mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE;521 522		spin_lock_bh(&mvm->add_stream_lock);523		list_del_init(&mvmtxq->list);524		clear_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state);525		mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE;526		spin_unlock_bh(&mvm->add_stream_lock);527	}528 529	mvmsta->tfd_queue_msk &= ~BIT(queue); /* Don't use this queue anymore */530	spin_unlock_bh(&mvmsta->lock);531 532	rcu_read_unlock();533 534	/*535	 * The TX path may have been using this TXQ_ID from the tid_data,536	 * so make sure it's no longer running so that we can safely reuse537	 * this TXQ later. We've set all the TIDs to IWL_MVM_INVALID_QUEUE538	 * above, but nothing guarantees we've stopped using them. Thus,539	 * without this, we could get to iwl_mvm_disable_txq() and remove540	 * the queue while still sending frames to it.541	 */542	synchronize_net();543 544	return disable_agg_tids;545}546 547static int iwl_mvm_free_inactive_queue(struct iwl_mvm *mvm, int queue,548				       struct ieee80211_sta *old_sta,549				       u8 new_sta_id)550{551	struct iwl_mvm_sta *mvmsta;552	u8 sta_id, tid;553	unsigned long disable_agg_tids = 0;554	bool same_sta;555	u16 queue_tmp = queue;556	int ret;557 558	lockdep_assert_held(&mvm->mutex);559 560	if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))561		return -EINVAL;562 563	sta_id = mvm->queue_info[queue].ra_sta_id;564	tid = mvm->queue_info[queue].txq_tid;565 566	same_sta = sta_id == new_sta_id;567 568	mvmsta = iwl_mvm_sta_from_staid_protected(mvm, sta_id);569	if (WARN_ON(!mvmsta))570		return -EINVAL;571 572	disable_agg_tids = iwl_mvm_remove_sta_queue_marking(mvm, queue);573	/* Disable the queue */574	if (disable_agg_tids)575		iwl_mvm_invalidate_sta_queue(mvm, queue,576					     disable_agg_tids, false);577 578	ret = iwl_mvm_disable_txq(mvm, old_sta, sta_id, &queue_tmp, tid);579	if (ret) {580		IWL_ERR(mvm,581			"Failed to free inactive queue %d (ret=%d)\n",582			queue, ret);583 584		return ret;585	}586 587	/* If TXQ is allocated to another STA, update removal in FW */588	if (!same_sta)589		iwl_mvm_invalidate_sta_queue(mvm, queue, 0, true);590 591	return 0;592}593 594static int iwl_mvm_get_shared_queue(struct iwl_mvm *mvm,595				    unsigned long tfd_queue_mask, u8 ac)596{597	int queue = 0;598	u8 ac_to_queue[IEEE80211_NUM_ACS];599	int i;600 601	/*602	 * This protects us against grabbing a queue that's being reconfigured603	 * by the inactivity checker.604	 */605	lockdep_assert_held(&mvm->mutex);606 607	if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))608		return -EINVAL;609 610	memset(&ac_to_queue, IEEE80211_INVAL_HW_QUEUE, sizeof(ac_to_queue));611 612	/* See what ACs the existing queues for this STA have */613	for_each_set_bit(i, &tfd_queue_mask, IWL_MVM_DQA_MAX_DATA_QUEUE) {614		/* Only DATA queues can be shared */615		if (i < IWL_MVM_DQA_MIN_DATA_QUEUE &&616		    i != IWL_MVM_DQA_BSS_CLIENT_QUEUE)617			continue;618 619		ac_to_queue[mvm->queue_info[i].mac80211_ac] = i;620	}621 622	/*623	 * The queue to share is chosen only from DATA queues as follows (in624	 * descending priority):625	 * 1. An AC_BE queue626	 * 2. Same AC queue627	 * 3. Highest AC queue that is lower than new AC628	 * 4. Any existing AC (there always is at least 1 DATA queue)629	 */630 631	/* Priority 1: An AC_BE queue */632	if (ac_to_queue[IEEE80211_AC_BE] != IEEE80211_INVAL_HW_QUEUE)633		queue = ac_to_queue[IEEE80211_AC_BE];634	/* Priority 2: Same AC queue */635	else if (ac_to_queue[ac] != IEEE80211_INVAL_HW_QUEUE)636		queue = ac_to_queue[ac];637	/* Priority 3a: If new AC is VO and VI exists - use VI */638	else if (ac == IEEE80211_AC_VO &&639		 ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE)640		queue = ac_to_queue[IEEE80211_AC_VI];641	/* Priority 3b: No BE so only AC less than the new one is BK */642	else if (ac_to_queue[IEEE80211_AC_BK] != IEEE80211_INVAL_HW_QUEUE)643		queue = ac_to_queue[IEEE80211_AC_BK];644	/* Priority 4a: No BE nor BK - use VI if exists */645	else if (ac_to_queue[IEEE80211_AC_VI] != IEEE80211_INVAL_HW_QUEUE)646		queue = ac_to_queue[IEEE80211_AC_VI];647	/* Priority 4b: No BE, BK nor VI - use VO if exists */648	else if (ac_to_queue[IEEE80211_AC_VO] != IEEE80211_INVAL_HW_QUEUE)649		queue = ac_to_queue[IEEE80211_AC_VO];650 651	/* Make sure queue found (or not) is legal */652	if (!iwl_mvm_is_dqa_data_queue(mvm, queue) &&653	    !iwl_mvm_is_dqa_mgmt_queue(mvm, queue) &&654	    (queue != IWL_MVM_DQA_BSS_CLIENT_QUEUE)) {655		IWL_ERR(mvm, "No DATA queues available to share\n");656		return -ENOSPC;657	}658 659	return queue;660}661 662/* Re-configure the SCD for a queue that has already been configured */663static int iwl_mvm_reconfig_scd(struct iwl_mvm *mvm, int queue, int fifo,664				int sta_id, int tid, int frame_limit, u16 ssn)665{666	struct iwl_scd_txq_cfg_cmd cmd = {667		.scd_queue = queue,668		.action = SCD_CFG_ENABLE_QUEUE,669		.window = frame_limit,670		.sta_id = sta_id,671		.ssn = cpu_to_le16(ssn),672		.tx_fifo = fifo,673		.aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE ||674			      queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE),675		.tid = tid,676	};677	int ret;678 679	if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))680		return -EINVAL;681 682	if (WARN(mvm->queue_info[queue].tid_bitmap == 0,683		 "Trying to reconfig unallocated queue %d\n", queue))684		return -ENXIO;685 686	IWL_DEBUG_TX_QUEUES(mvm, "Reconfig SCD for TXQ #%d\n", queue);687 688	ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd);689	WARN_ONCE(ret, "Failed to re-configure queue %d on FIFO %d, ret=%d\n",690		  queue, fifo, ret);691 692	return ret;693}694 695/*696 * If a given queue has a higher AC than the TID stream that is being compared697 * to, the queue needs to be redirected to the lower AC. This function does that698 * in such a case, otherwise - if no redirection required - it does nothing,699 * unless the %force param is true.700 */701static int iwl_mvm_redirect_queue(struct iwl_mvm *mvm, int queue, int tid,702				  int ac, int ssn, unsigned int wdg_timeout,703				  bool force, struct iwl_mvm_txq *txq)704{705	struct iwl_scd_txq_cfg_cmd cmd = {706		.scd_queue = queue,707		.action = SCD_CFG_DISABLE_QUEUE,708	};709	bool shared_queue;710	int ret;711 712	if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))713		return -EINVAL;714 715	/*716	 * If the AC is lower than current one - FIFO needs to be redirected to717	 * the lowest one of the streams in the queue. Check if this is needed718	 * here.719	 * Notice that the enum ieee80211_ac_numbers is "flipped", so BK is with720	 * value 3 and VO with value 0, so to check if ac X is lower than ac Y721	 * we need to check if the numerical value of X is LARGER than of Y.722	 */723	if (ac <= mvm->queue_info[queue].mac80211_ac && !force) {724		IWL_DEBUG_TX_QUEUES(mvm,725				    "No redirection needed on TXQ #%d\n",726				    queue);727		return 0;728	}729 730	cmd.sta_id = mvm->queue_info[queue].ra_sta_id;731	cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[mvm->queue_info[queue].mac80211_ac];732	cmd.tid = mvm->queue_info[queue].txq_tid;733	shared_queue = hweight16(mvm->queue_info[queue].tid_bitmap) > 1;734 735	IWL_DEBUG_TX_QUEUES(mvm, "Redirecting TXQ #%d to FIFO #%d\n",736			    queue, iwl_mvm_ac_to_tx_fifo[ac]);737 738	/* Stop the queue and wait for it to empty */739	set_bit(IWL_MVM_TXQ_STATE_STOP_REDIRECT, &txq->state);740 741	ret = iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(queue));742	if (ret) {743		IWL_ERR(mvm, "Error draining queue %d before reconfig\n",744			queue);745		ret = -EIO;746		goto out;747	}748 749	/* Before redirecting the queue we need to de-activate it */750	iwl_trans_txq_disable(mvm->trans, queue, false);751	ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd);752	if (ret)753		IWL_ERR(mvm, "Failed SCD disable TXQ %d (ret=%d)\n", queue,754			ret);755 756	/* Make sure the SCD wrptr is correctly set before reconfiguring */757	iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, NULL, wdg_timeout);758 759	/* Update the TID "owner" of the queue */760	mvm->queue_info[queue].txq_tid = tid;761 762	/* TODO: Work-around SCD bug when moving back by multiples of 0x40 */763 764	/* Redirect to lower AC */765	iwl_mvm_reconfig_scd(mvm, queue, iwl_mvm_ac_to_tx_fifo[ac],766			     cmd.sta_id, tid, IWL_FRAME_LIMIT, ssn);767 768	/* Update AC marking of the queue */769	mvm->queue_info[queue].mac80211_ac = ac;770 771	/*772	 * Mark queue as shared in transport if shared773	 * Note this has to be done after queue enablement because enablement774	 * can also set this value, and there is no indication there to shared775	 * queues776	 */777	if (shared_queue)778		iwl_trans_txq_set_shared_mode(mvm->trans, queue, true);779 780out:781	/* Continue using the queue */782	clear_bit(IWL_MVM_TXQ_STATE_STOP_REDIRECT, &txq->state);783 784	return ret;785}786 787static int iwl_mvm_find_free_queue(struct iwl_mvm *mvm, u8 sta_id,788				   u8 minq, u8 maxq)789{790	int i;791 792	lockdep_assert_held(&mvm->mutex);793 794	if (WARN(maxq >= mvm->trans->trans_cfg->base_params->num_of_queues,795		 "max queue %d >= num_of_queues (%d)", maxq,796		 mvm->trans->trans_cfg->base_params->num_of_queues))797		maxq = mvm->trans->trans_cfg->base_params->num_of_queues - 1;798 799	/* This should not be hit with new TX path */800	if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))801		return -ENOSPC;802 803	/* Start by looking for a free queue */804	for (i = minq; i <= maxq; i++)805		if (mvm->queue_info[i].tid_bitmap == 0 &&806		    mvm->queue_info[i].status == IWL_MVM_QUEUE_FREE)807			return i;808 809	return -ENOSPC;810}811 812static int iwl_mvm_get_queue_size(struct ieee80211_sta *sta)813{814	int max_size = IWL_DEFAULT_QUEUE_SIZE;815	unsigned int link_id;816 817	/* this queue isn't used for traffic (cab_queue) */818	if (!sta)819		return IWL_MGMT_QUEUE_SIZE;820 821	rcu_read_lock();822 823	for (link_id = 0; link_id < ARRAY_SIZE(sta->link); link_id++) {824		struct ieee80211_link_sta *link =825			rcu_dereference(sta->link[link_id]);826 827		if (!link)828			continue;829 830		/* support for 512 ba size */831		if (link->eht_cap.has_eht &&832		    max_size < IWL_DEFAULT_QUEUE_SIZE_EHT)833			max_size = IWL_DEFAULT_QUEUE_SIZE_EHT;834 835		/* support for 256 ba size */836		if (link->he_cap.has_he &&837		    max_size < IWL_DEFAULT_QUEUE_SIZE_HE)838			max_size = IWL_DEFAULT_QUEUE_SIZE_HE;839	}840 841	rcu_read_unlock();842	return max_size;843}844 845int iwl_mvm_tvqm_enable_txq(struct iwl_mvm *mvm,846			    struct ieee80211_sta *sta,847			    u8 sta_id, u8 tid, unsigned int timeout)848{849	int queue, size;850	u32 sta_mask = 0;851 852	if (tid == IWL_MAX_TID_COUNT) {853		tid = IWL_MGMT_TID;854		size = max_t(u32, IWL_MGMT_QUEUE_SIZE,855			     mvm->trans->cfg->min_txq_size);856	} else {857		size = iwl_mvm_get_queue_size(sta);858	}859 860	if (sta) {861		struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);862		struct ieee80211_link_sta *link_sta;863		unsigned int link_id;864 865		rcu_read_lock();866		for_each_sta_active_link(mvmsta->vif, sta, link_sta, link_id) {867			struct iwl_mvm_link_sta *link =868				rcu_dereference_protected(mvmsta->link[link_id],869							  lockdep_is_held(&mvm->mutex));870 871			if (!link)872				continue;873 874			sta_mask |= BIT(link->sta_id);875		}876		rcu_read_unlock();877	} else {878		sta_mask |= BIT(sta_id);879	}880 881	if (!sta_mask)882		return -EINVAL;883 884	queue = iwl_trans_txq_alloc(mvm->trans, 0, sta_mask,885				    tid, size, timeout);886 887	if (queue >= 0)888		IWL_DEBUG_TX_QUEUES(mvm,889				    "Enabling TXQ #%d for sta mask 0x%x tid %d\n",890				    queue, sta_mask, tid);891 892	return queue;893}894 895static int iwl_mvm_sta_alloc_queue_tvqm(struct iwl_mvm *mvm,896					struct ieee80211_sta *sta, u8 ac,897					int tid)898{899	struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);900	struct iwl_mvm_txq *mvmtxq =901		iwl_mvm_txq_from_tid(sta, tid);902	unsigned int wdg_timeout =903		iwl_mvm_get_wd_timeout(mvm, mvmsta->vif);904	int queue = -1;905 906	lockdep_assert_held(&mvm->mutex);907 908	IWL_DEBUG_TX_QUEUES(mvm,909			    "Allocating queue for sta %d on tid %d\n",910			    mvmsta->deflink.sta_id, tid);911	queue = iwl_mvm_tvqm_enable_txq(mvm, sta, mvmsta->deflink.sta_id,912					tid, wdg_timeout);913	if (queue < 0)914		return queue;915 916	mvmtxq->txq_id = queue;917	mvm->tvqm_info[queue].txq_tid = tid;918	mvm->tvqm_info[queue].sta_id = mvmsta->deflink.sta_id;919 920	IWL_DEBUG_TX_QUEUES(mvm, "Allocated queue is %d\n", queue);921 922	spin_lock_bh(&mvmsta->lock);923	mvmsta->tid_data[tid].txq_id = queue;924	spin_unlock_bh(&mvmsta->lock);925 926	return 0;927}928 929static bool iwl_mvm_update_txq_mapping(struct iwl_mvm *mvm,930				       struct ieee80211_sta *sta,931				       int queue, u8 sta_id, u8 tid)932{933	bool enable_queue = true;934 935	/* Make sure this TID isn't already enabled */936	if (mvm->queue_info[queue].tid_bitmap & BIT(tid)) {937		IWL_ERR(mvm, "Trying to enable TXQ %d with existing TID %d\n",938			queue, tid);939		return false;940	}941 942	/* Update mappings and refcounts */943	if (mvm->queue_info[queue].tid_bitmap)944		enable_queue = false;945 946	mvm->queue_info[queue].tid_bitmap |= BIT(tid);947	mvm->queue_info[queue].ra_sta_id = sta_id;948 949	if (enable_queue) {950		if (tid != IWL_MAX_TID_COUNT)951			mvm->queue_info[queue].mac80211_ac =952				tid_to_mac80211_ac[tid];953		else954			mvm->queue_info[queue].mac80211_ac = IEEE80211_AC_VO;955 956		mvm->queue_info[queue].txq_tid = tid;957	}958 959	if (sta) {960		struct iwl_mvm_txq *mvmtxq =961			iwl_mvm_txq_from_tid(sta, tid);962 963		mvmtxq->txq_id = queue;964	}965 966	IWL_DEBUG_TX_QUEUES(mvm,967			    "Enabling TXQ #%d tids=0x%x\n",968			    queue, mvm->queue_info[queue].tid_bitmap);969 970	return enable_queue;971}972 973static bool iwl_mvm_enable_txq(struct iwl_mvm *mvm, struct ieee80211_sta *sta,974			       int queue, u16 ssn,975			       const struct iwl_trans_txq_scd_cfg *cfg,976			       unsigned int wdg_timeout)977{978	struct iwl_scd_txq_cfg_cmd cmd = {979		.scd_queue = queue,980		.action = SCD_CFG_ENABLE_QUEUE,981		.window = cfg->frame_limit,982		.sta_id = cfg->sta_id,983		.ssn = cpu_to_le16(ssn),984		.tx_fifo = cfg->fifo,985		.aggregate = cfg->aggregate,986		.tid = cfg->tid,987	};988	bool inc_ssn;989 990	if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))991		return false;992 993	/* Send the enabling command if we need to */994	if (!iwl_mvm_update_txq_mapping(mvm, sta, queue, cfg->sta_id, cfg->tid))995		return false;996 997	inc_ssn = iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn,998					   NULL, wdg_timeout);999	if (inc_ssn)1000		le16_add_cpu(&cmd.ssn, 1);1001 1002	WARN(iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd),1003	     "Failed to configure queue %d on FIFO %d\n", queue, cfg->fifo);1004 1005	return inc_ssn;1006}1007 1008static void iwl_mvm_change_queue_tid(struct iwl_mvm *mvm, int queue)1009{1010	struct iwl_scd_txq_cfg_cmd cmd = {1011		.scd_queue = queue,1012		.action = SCD_CFG_UPDATE_QUEUE_TID,1013	};1014	int tid;1015	unsigned long tid_bitmap;1016	int ret;1017 1018	lockdep_assert_held(&mvm->mutex);1019 1020	if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))1021		return;1022 1023	tid_bitmap = mvm->queue_info[queue].tid_bitmap;1024 1025	if (WARN(!tid_bitmap, "TXQ %d has no tids assigned to it\n", queue))1026		return;1027 1028	/* Find any TID for queue */1029	tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1);1030	cmd.tid = tid;1031	cmd.tx_fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]];1032 1033	ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd);1034	if (ret) {1035		IWL_ERR(mvm, "Failed to update owner of TXQ %d (ret=%d)\n",1036			queue, ret);1037		return;1038	}1039 1040	mvm->queue_info[queue].txq_tid = tid;1041	IWL_DEBUG_TX_QUEUES(mvm, "Changed TXQ %d ownership to tid %d\n",1042			    queue, tid);1043}1044 1045static void iwl_mvm_unshare_queue(struct iwl_mvm *mvm, int queue)1046{1047	struct ieee80211_sta *sta;1048	struct iwl_mvm_sta *mvmsta;1049	u8 sta_id;1050	int tid = -1;1051	unsigned long tid_bitmap;1052	unsigned int wdg_timeout;1053	int ssn;1054	int ret = true;1055 1056	/* queue sharing is disabled on new TX path */1057	if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))1058		return;1059 1060	lockdep_assert_held(&mvm->mutex);1061 1062	sta_id = mvm->queue_info[queue].ra_sta_id;1063	tid_bitmap = mvm->queue_info[queue].tid_bitmap;1064 1065	/* Find TID for queue, and make sure it is the only one on the queue */1066	tid = find_first_bit(&tid_bitmap, IWL_MAX_TID_COUNT + 1);1067	if (tid_bitmap != BIT(tid)) {1068		IWL_ERR(mvm, "Failed to unshare q %d, active tids=0x%lx\n",1069			queue, tid_bitmap);1070		return;1071	}1072 1073	IWL_DEBUG_TX_QUEUES(mvm, "Unsharing TXQ %d, keeping tid %d\n", queue,1074			    tid);1075 1076	sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],1077					lockdep_is_held(&mvm->mutex));1078 1079	if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))1080		return;1081 1082	mvmsta = iwl_mvm_sta_from_mac80211(sta);1083	wdg_timeout = iwl_mvm_get_wd_timeout(mvm, mvmsta->vif);1084 1085	ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number);1086 1087	ret = iwl_mvm_redirect_queue(mvm, queue, tid,1088				     tid_to_mac80211_ac[tid], ssn,1089				     wdg_timeout, true,1090				     iwl_mvm_txq_from_tid(sta, tid));1091	if (ret) {1092		IWL_ERR(mvm, "Failed to redirect TXQ %d\n", queue);1093		return;1094	}1095 1096	/* If aggs should be turned back on - do it */1097	if (mvmsta->tid_data[tid].state == IWL_AGG_ON) {1098		struct iwl_mvm_add_sta_cmd cmd = {0};1099 1100		mvmsta->tid_disable_agg &= ~BIT(tid);1101 1102		cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color);1103		cmd.sta_id = mvmsta->deflink.sta_id;1104		cmd.add_modify = STA_MODE_MODIFY;1105		cmd.modify_mask = STA_MODIFY_TID_DISABLE_TX;1106		cmd.tfd_queue_msk = cpu_to_le32(mvmsta->tfd_queue_msk);1107		cmd.tid_disable_tx = cpu_to_le16(mvmsta->tid_disable_agg);1108 1109		ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,1110					   iwl_mvm_add_sta_cmd_size(mvm), &cmd);1111		if (!ret) {1112			IWL_DEBUG_TX_QUEUES(mvm,1113					    "TXQ #%d is now aggregated again\n",1114					    queue);1115 1116			/* Mark queue intenally as aggregating again */1117			iwl_trans_txq_set_shared_mode(mvm->trans, queue, false);1118		}1119	}1120 1121	mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY;1122}1123 1124/*1125 * Remove inactive TIDs of a given queue.1126 * If all queue TIDs are inactive - mark the queue as inactive1127 * If only some the queue TIDs are inactive - unmap them from the queue1128 *1129 * Returns %true if all TIDs were removed and the queue could be reused.1130 */1131static bool iwl_mvm_remove_inactive_tids(struct iwl_mvm *mvm,1132					 struct iwl_mvm_sta *mvmsta, int queue,1133					 unsigned long tid_bitmap,1134					 unsigned long *unshare_queues,1135					 unsigned long *changetid_queues)1136{1137	unsigned int tid;1138 1139	lockdep_assert_held(&mvmsta->lock);1140	lockdep_assert_held(&mvm->mutex);1141 1142	if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))1143		return false;1144 1145	/* Go over all non-active TIDs, incl. IWL_MAX_TID_COUNT (for mgmt) */1146	for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {1147		/* If some TFDs are still queued - don't mark TID as inactive */1148		if (iwl_mvm_tid_queued(mvm, &mvmsta->tid_data[tid]))1149			tid_bitmap &= ~BIT(tid);1150 1151		/* Don't mark as inactive any TID that has an active BA */1152		if (mvmsta->tid_data[tid].state != IWL_AGG_OFF)1153			tid_bitmap &= ~BIT(tid);1154	}1155 1156	/* If all TIDs in the queue are inactive - return it can be reused */1157	if (tid_bitmap == mvm->queue_info[queue].tid_bitmap) {1158		IWL_DEBUG_TX_QUEUES(mvm, "Queue %d is inactive\n", queue);1159		return true;1160	}1161 1162	/*1163	 * If we are here, this is a shared queue and not all TIDs timed-out.1164	 * Remove the ones that did.1165	 */1166	for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {1167		u16 q_tid_bitmap;1168 1169		mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE;1170		mvm->queue_info[queue].tid_bitmap &= ~BIT(tid);1171 1172		q_tid_bitmap = mvm->queue_info[queue].tid_bitmap;1173 1174		/*1175		 * We need to take into account a situation in which a TXQ was1176		 * allocated to TID x, and then turned shared by adding TIDs y1177		 * and z. If TID x becomes inactive and is removed from the TXQ,1178		 * ownership must be given to one of the remaining TIDs.1179		 * This is mainly because if TID x continues - a new queue can't1180		 * be allocated for it as long as it is an owner of another TXQ.1181		 *1182		 * Mark this queue in the right bitmap, we'll send the command1183		 * to the firmware later.1184		 */1185		if (!(q_tid_bitmap & BIT(mvm->queue_info[queue].txq_tid)))1186			set_bit(queue, changetid_queues);1187 1188		IWL_DEBUG_TX_QUEUES(mvm,1189				    "Removing inactive TID %d from shared Q:%d\n",1190				    tid, queue);1191	}1192 1193	IWL_DEBUG_TX_QUEUES(mvm,1194			    "TXQ #%d left with tid bitmap 0x%x\n", queue,1195			    mvm->queue_info[queue].tid_bitmap);1196 1197	/*1198	 * There may be different TIDs with the same mac queues, so make1199	 * sure all TIDs have existing corresponding mac queues enabled1200	 */1201	tid_bitmap = mvm->queue_info[queue].tid_bitmap;1202 1203	/* If the queue is marked as shared - "unshare" it */1204	if (hweight16(mvm->queue_info[queue].tid_bitmap) == 1 &&1205	    mvm->queue_info[queue].status == IWL_MVM_QUEUE_SHARED) {1206		IWL_DEBUG_TX_QUEUES(mvm, "Marking Q:%d for reconfig\n",1207				    queue);1208		set_bit(queue, unshare_queues);1209	}1210 1211	return false;1212}1213 1214/*1215 * Check for inactivity - this includes checking if any queue1216 * can be unshared and finding one (and only one) that can be1217 * reused.1218 * This function is also invoked as a sort of clean-up task,1219 * in which case @alloc_for_sta is IWL_MVM_INVALID_STA.1220 *1221 * Returns the queue number, or -ENOSPC.1222 */1223static int iwl_mvm_inactivity_check(struct iwl_mvm *mvm, u8 alloc_for_sta)1224{1225	unsigned long now = jiffies;1226	unsigned long unshare_queues = 0;1227	unsigned long changetid_queues = 0;1228	int i, ret, free_queue = -ENOSPC;1229	struct ieee80211_sta *queue_owner  = NULL;1230 1231	lockdep_assert_held(&mvm->mutex);1232 1233	if (iwl_mvm_has_new_tx_api(mvm))1234		return -ENOSPC;1235 1236	rcu_read_lock();1237 1238	/* we skip the CMD queue below by starting at 1 */1239	BUILD_BUG_ON(IWL_MVM_DQA_CMD_QUEUE != 0);1240 1241	for (i = 1; i < IWL_MAX_HW_QUEUES; i++) {1242		struct ieee80211_sta *sta;1243		struct iwl_mvm_sta *mvmsta;1244		u8 sta_id;1245		int tid;1246		unsigned long inactive_tid_bitmap = 0;1247		unsigned long queue_tid_bitmap;1248 1249		queue_tid_bitmap = mvm->queue_info[i].tid_bitmap;1250		if (!queue_tid_bitmap)1251			continue;1252 1253		/* If TXQ isn't in active use anyway - nothing to do here... */1254		if (mvm->queue_info[i].status != IWL_MVM_QUEUE_READY &&1255		    mvm->queue_info[i].status != IWL_MVM_QUEUE_SHARED)1256			continue;1257 1258		/* Check to see if there are inactive TIDs on this queue */1259		for_each_set_bit(tid, &queue_tid_bitmap,1260				 IWL_MAX_TID_COUNT + 1) {1261			if (time_after(mvm->queue_info[i].last_frame_time[tid] +1262				       IWL_MVM_DQA_QUEUE_TIMEOUT, now))1263				continue;1264 1265			inactive_tid_bitmap |= BIT(tid);1266		}1267 1268		/* If all TIDs are active - finish check on this queue */1269		if (!inactive_tid_bitmap)1270			continue;1271 1272		/*1273		 * If we are here - the queue hadn't been served recently and is1274		 * in use1275		 */1276 1277		sta_id = mvm->queue_info[i].ra_sta_id;1278		sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);1279 1280		/*1281		 * If the STA doesn't exist anymore, it isn't an error. It could1282		 * be that it was removed since getting the queues, and in this1283		 * case it should've inactivated its queues anyway.1284		 */1285		if (IS_ERR_OR_NULL(sta))1286			continue;1287 1288		mvmsta = iwl_mvm_sta_from_mac80211(sta);1289 1290		spin_lock_bh(&mvmsta->lock);1291		ret = iwl_mvm_remove_inactive_tids(mvm, mvmsta, i,1292						   inactive_tid_bitmap,1293						   &unshare_queues,1294						   &changetid_queues);1295		if (ret && free_queue < 0) {1296			queue_owner = sta;1297			free_queue = i;1298		}1299		/* only unlock sta lock - we still need the queue info lock */1300		spin_unlock_bh(&mvmsta->lock);1301	}1302 1303 1304	/* Reconfigure queues requiring reconfiguation */1305	for_each_set_bit(i, &unshare_queues, IWL_MAX_HW_QUEUES)1306		iwl_mvm_unshare_queue(mvm, i);1307	for_each_set_bit(i, &changetid_queues, IWL_MAX_HW_QUEUES)1308		iwl_mvm_change_queue_tid(mvm, i);1309 1310	rcu_read_unlock();1311 1312	if (free_queue >= 0 && alloc_for_sta != IWL_MVM_INVALID_STA) {1313		ret = iwl_mvm_free_inactive_queue(mvm, free_queue, queue_owner,1314						  alloc_for_sta);1315		if (ret)1316			return ret;1317	}1318 1319	return free_queue;1320}1321 1322static int iwl_mvm_sta_alloc_queue(struct iwl_mvm *mvm,1323				   struct ieee80211_sta *sta, u8 ac, int tid)1324{1325	struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);1326	struct iwl_trans_txq_scd_cfg cfg = {1327		.fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac),1328		.sta_id = mvmsta->deflink.sta_id,1329		.tid = tid,1330		.frame_limit = IWL_FRAME_LIMIT,1331	};1332	unsigned int wdg_timeout =1333		iwl_mvm_get_wd_timeout(mvm, mvmsta->vif);1334	int queue = -1;1335	u16 queue_tmp;1336	unsigned long disable_agg_tids = 0;1337	enum iwl_mvm_agg_state queue_state;1338	bool shared_queue = false, inc_ssn;1339	int ssn;1340	unsigned long tfd_queue_mask;1341	int ret;1342 1343	lockdep_assert_held(&mvm->mutex);1344 1345	if (iwl_mvm_has_new_tx_api(mvm))1346		return iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid);1347 1348	spin_lock_bh(&mvmsta->lock);1349	tfd_queue_mask = mvmsta->tfd_queue_msk;1350	ssn = IEEE80211_SEQ_TO_SN(mvmsta->tid_data[tid].seq_number);1351	spin_unlock_bh(&mvmsta->lock);1352 1353	if (tid == IWL_MAX_TID_COUNT) {1354		queue = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id,1355						IWL_MVM_DQA_MIN_MGMT_QUEUE,1356						IWL_MVM_DQA_MAX_MGMT_QUEUE);1357		if (queue >= IWL_MVM_DQA_MIN_MGMT_QUEUE)1358			IWL_DEBUG_TX_QUEUES(mvm, "Found free MGMT queue #%d\n",1359					    queue);1360 1361		/* If no such queue is found, we'll use a DATA queue instead */1362	}1363 1364	if ((queue < 0 && mvmsta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) &&1365	    (mvm->queue_info[mvmsta->reserved_queue].status ==1366			IWL_MVM_QUEUE_RESERVED)) {1367		queue = mvmsta->reserved_queue;1368		mvm->queue_info[queue].reserved = true;1369		IWL_DEBUG_TX_QUEUES(mvm, "Using reserved queue #%d\n", queue);1370	}1371 1372	if (queue < 0)1373		queue = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id,1374						IWL_MVM_DQA_MIN_DATA_QUEUE,1375						IWL_MVM_DQA_MAX_DATA_QUEUE);1376	if (queue < 0) {1377		/* try harder - perhaps kill an inactive queue */1378		queue = iwl_mvm_inactivity_check(mvm, mvmsta->deflink.sta_id);1379	}1380 1381	/* No free queue - we'll have to share */1382	if (queue <= 0) {1383		queue = iwl_mvm_get_shared_queue(mvm, tfd_queue_mask, ac);1384		if (queue > 0) {1385			shared_queue = true;1386			mvm->queue_info[queue].status = IWL_MVM_QUEUE_SHARED;1387		}1388	}1389 1390	/*1391	 * Mark TXQ as ready, even though it hasn't been fully configured yet,1392	 * to make sure no one else takes it.1393	 * This will allow avoiding re-acquiring the lock at the end of the1394	 * configuration. On error we'll mark it back as free.1395	 */1396	if (queue > 0 && !shared_queue)1397		mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY;1398 1399	/* This shouldn't happen - out of queues */1400	if (WARN_ON(queue <= 0)) {1401		IWL_ERR(mvm, "No available queues for tid %d on sta_id %d\n",1402			tid, cfg.sta_id);1403		return queue;1404	}1405 1406	/*1407	 * Actual en/disablement of aggregations is through the ADD_STA HCMD,1408	 * but for configuring the SCD to send A-MPDUs we need to mark the queue1409	 * as aggregatable.1410	 * Mark all DATA queues as allowing to be aggregated at some point1411	 */1412	cfg.aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE ||1413			 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE);1414 1415	IWL_DEBUG_TX_QUEUES(mvm,1416			    "Allocating %squeue #%d to sta %d on tid %d\n",1417			    shared_queue ? "shared " : "", queue,1418			    mvmsta->deflink.sta_id, tid);1419 1420	if (shared_queue) {1421		/* Disable any open aggs on this queue */1422		disable_agg_tids = iwl_mvm_get_queue_agg_tids(mvm, queue);1423 1424		if (disable_agg_tids) {1425			IWL_DEBUG_TX_QUEUES(mvm, "Disabling aggs on queue %d\n",1426					    queue);1427			iwl_mvm_invalidate_sta_queue(mvm, queue,1428						     disable_agg_tids, false);1429		}1430	}1431 1432	inc_ssn = iwl_mvm_enable_txq(mvm, sta, queue, ssn, &cfg, wdg_timeout);1433 1434	/*1435	 * Mark queue as shared in transport if shared1436	 * Note this has to be done after queue enablement because enablement1437	 * can also set this value, and there is no indication there to shared1438	 * queues1439	 */1440	if (shared_queue)1441		iwl_trans_txq_set_shared_mode(mvm->trans, queue, true);1442 1443	spin_lock_bh(&mvmsta->lock);1444	/*1445	 * This looks racy, but it is not. We have only one packet for1446	 * this ra/tid in our Tx path since we stop the Qdisc when we1447	 * need to allocate a new TFD queue.1448	 */1449	if (inc_ssn) {1450		mvmsta->tid_data[tid].seq_number += 0x10;1451		ssn = (ssn + 1) & IEEE80211_SCTL_SEQ;1452	}1453	mvmsta->tid_data[tid].txq_id = queue;1454	mvmsta->tfd_queue_msk |= BIT(queue);1455	queue_state = mvmsta->tid_data[tid].state;1456 1457	if (mvmsta->reserved_queue == queue)1458		mvmsta->reserved_queue = IEEE80211_INVAL_HW_QUEUE;1459	spin_unlock_bh(&mvmsta->lock);1460 1461	if (!shared_queue) {1462		ret = iwl_mvm_sta_send_to_fw(mvm, sta, true, STA_MODIFY_QUEUES);1463		if (ret)1464			goto out_err;1465 1466		/* If we need to re-enable aggregations... */1467		if (queue_state == IWL_AGG_ON) {1468			ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true);1469			if (ret)1470				goto out_err;1471		}1472	} else {1473		/* Redirect queue, if needed */1474		ret = iwl_mvm_redirect_queue(mvm, queue, tid, ac, ssn,1475					     wdg_timeout, false,1476					     iwl_mvm_txq_from_tid(sta, tid));1477		if (ret)1478			goto out_err;1479	}1480 1481	return 0;1482 1483out_err:1484	queue_tmp = queue;1485	iwl_mvm_disable_txq(mvm, sta, mvmsta->deflink.sta_id, &queue_tmp, tid);1486 1487	return ret;1488}1489 1490int iwl_mvm_sta_ensure_queue(struct iwl_mvm *mvm,1491			     struct ieee80211_txq *txq)1492{1493	struct iwl_mvm_txq *mvmtxq = iwl_mvm_txq_from_mac80211(txq);1494	int ret = -EINVAL;1495 1496	lockdep_assert_held(&mvm->mutex);1497 1498	if (likely(test_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state)) ||1499	    !txq->sta) {1500		return 0;1501	}1502 1503	if (!iwl_mvm_sta_alloc_queue(mvm, txq->sta, txq->ac, txq->tid)) {1504		set_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state);1505		ret = 0;1506	}1507 1508	local_bh_disable();1509	spin_lock(&mvm->add_stream_lock);1510	if (!list_empty(&mvmtxq->list))1511		list_del_init(&mvmtxq->list);1512	spin_unlock(&mvm->add_stream_lock);1513	local_bh_enable();1514 1515	return ret;1516}1517 1518void iwl_mvm_add_new_dqa_stream_wk(struct work_struct *wk)1519{1520	struct iwl_mvm *mvm = container_of(wk, struct iwl_mvm,1521					   add_stream_wk);1522 1523	mutex_lock(&mvm->mutex);1524 1525	iwl_mvm_inactivity_check(mvm, IWL_MVM_INVALID_STA);1526 1527	while (!list_empty(&mvm->add_stream_txqs)) {1528		struct iwl_mvm_txq *mvmtxq;1529		struct ieee80211_txq *txq;1530		u8 tid;1531 1532		mvmtxq = list_first_entry(&mvm->add_stream_txqs,1533					  struct iwl_mvm_txq, list);1534 1535		txq = container_of((void *)mvmtxq, struct ieee80211_txq,1536				   drv_priv);1537		tid = txq->tid;1538		if (tid == IEEE80211_NUM_TIDS)1539			tid = IWL_MAX_TID_COUNT;1540 1541		/*1542		 * We can't really do much here, but if this fails we can't1543		 * transmit anyway - so just don't transmit the frame etc.1544		 * and let them back up ... we've tried our best to allocate1545		 * a queue in the function itself.1546		 */1547		if (iwl_mvm_sta_alloc_queue(mvm, txq->sta, txq->ac, tid)) {1548			spin_lock_bh(&mvm->add_stream_lock);1549			list_del_init(&mvmtxq->list);1550			spin_unlock_bh(&mvm->add_stream_lock);1551			continue;1552		}1553 1554		/* now we're ready, any remaining races/concurrency will be1555		 * handled in iwl_mvm_mac_itxq_xmit()1556		 */1557		set_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state);1558 1559		local_bh_disable();1560		spin_lock(&mvm->add_stream_lock);1561		list_del_init(&mvmtxq->list);1562		spin_unlock(&mvm->add_stream_lock);1563 1564		iwl_mvm_mac_itxq_xmit(mvm->hw, txq);1565		local_bh_enable();1566	}1567 1568	mutex_unlock(&mvm->mutex);1569}1570 1571static int iwl_mvm_reserve_sta_stream(struct iwl_mvm *mvm,1572				      struct ieee80211_sta *sta,1573				      enum nl80211_iftype vif_type)1574{1575	struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);1576	int queue;1577 1578	/* queue reserving is disabled on new TX path */1579	if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))1580		return 0;1581 1582	/* run the general cleanup/unsharing of queues */1583	iwl_mvm_inactivity_check(mvm, IWL_MVM_INVALID_STA);1584 1585	/* Make sure we have free resources for this STA */1586	if (vif_type == NL80211_IFTYPE_STATION && !sta->tdls &&1587	    !mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].tid_bitmap &&1588	    (mvm->queue_info[IWL_MVM_DQA_BSS_CLIENT_QUEUE].status ==1589	     IWL_MVM_QUEUE_FREE))1590		queue = IWL_MVM_DQA_BSS_CLIENT_QUEUE;1591	else1592		queue = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id,1593						IWL_MVM_DQA_MIN_DATA_QUEUE,1594						IWL_MVM_DQA_MAX_DATA_QUEUE);1595	if (queue < 0) {1596		/* try again - this time kick out a queue if needed */1597		queue = iwl_mvm_inactivity_check(mvm, mvmsta->deflink.sta_id);1598		if (queue < 0) {1599			IWL_ERR(mvm, "No available queues for new station\n");1600			return -ENOSPC;1601		}1602	}1603	mvm->queue_info[queue].status = IWL_MVM_QUEUE_RESERVED;1604 1605	mvmsta->reserved_queue = queue;1606 1607	IWL_DEBUG_TX_QUEUES(mvm, "Reserving data queue #%d for sta_id %d\n",1608			    queue, mvmsta->deflink.sta_id);1609 1610	return 0;1611}1612 1613/*1614 * In DQA mode, after a HW restart the queues should be allocated as before, in1615 * order to avoid race conditions when there are shared queues. This function1616 * does the re-mapping and queue allocation.1617 *1618 * Note that re-enabling aggregations isn't done in this function.1619 */1620void iwl_mvm_realloc_queues_after_restart(struct iwl_mvm *mvm,1621					  struct ieee80211_sta *sta)1622{1623	struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);1624	unsigned int wdg =1625		iwl_mvm_get_wd_timeout(mvm, mvm_sta->vif);1626	int i;1627	struct iwl_trans_txq_scd_cfg cfg = {1628		.sta_id = mvm_sta->deflink.sta_id,1629		.frame_limit = IWL_FRAME_LIMIT,1630	};1631 1632	/* Make sure reserved queue is still marked as such (if allocated) */1633	if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE)1634		mvm->queue_info[mvm_sta->reserved_queue].status =1635			IWL_MVM_QUEUE_RESERVED;1636 1637	for (i = 0; i <= IWL_MAX_TID_COUNT; i++) {1638		struct iwl_mvm_tid_data *tid_data = &mvm_sta->tid_data[i];1639		int txq_id = tid_data->txq_id;1640		int ac;1641 1642		if (txq_id == IWL_MVM_INVALID_QUEUE)1643			continue;1644 1645		ac = tid_to_mac80211_ac[i];1646 1647		if (iwl_mvm_has_new_tx_api(mvm)) {1648			IWL_DEBUG_TX_QUEUES(mvm,1649					    "Re-mapping sta %d tid %d\n",1650					    mvm_sta->deflink.sta_id, i);1651			txq_id = iwl_mvm_tvqm_enable_txq(mvm, sta,1652							 mvm_sta->deflink.sta_id,1653							 i, wdg);1654			/*1655			 * on failures, just set it to IWL_MVM_INVALID_QUEUE1656			 * to try again later, we have no other good way of1657			 * failing here1658			 */1659			if (txq_id < 0)1660				txq_id = IWL_MVM_INVALID_QUEUE;1661			tid_data->txq_id = txq_id;1662 1663			/*1664			 * Since we don't set the seq number after reset, and HW1665			 * sets it now, FW reset will cause the seq num to start1666			 * at 0 again, so driver will need to update it1667			 * internally as well, so it keeps in sync with real val1668			 */1669			tid_data->seq_number = 0;1670		} else {1671			u16 seq = IEEE80211_SEQ_TO_SN(tid_data->seq_number);1672 1673			cfg.tid = i;1674			cfg.fifo = iwl_mvm_mac_ac_to_tx_fifo(mvm, ac);1675			cfg.aggregate = (txq_id >= IWL_MVM_DQA_MIN_DATA_QUEUE ||1676					 txq_id ==1677					 IWL_MVM_DQA_BSS_CLIENT_QUEUE);1678 1679			IWL_DEBUG_TX_QUEUES(mvm,1680					    "Re-mapping sta %d tid %d to queue %d\n",1681					    mvm_sta->deflink.sta_id, i,1682					    txq_id);1683 1684			iwl_mvm_enable_txq(mvm, sta, txq_id, seq, &cfg, wdg);1685			mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_READY;1686		}1687	}1688}1689 1690static int iwl_mvm_add_int_sta_common(struct iwl_mvm *mvm,1691				      struct iwl_mvm_int_sta *sta,1692				      const u8 *addr,1693				      u16 mac_id, u16 color)1694{1695	struct iwl_mvm_add_sta_cmd cmd;1696	int ret;1697	u32 status = ADD_STA_SUCCESS;1698 1699	lockdep_assert_held(&mvm->mutex);1700 1701	memset(&cmd, 0, sizeof(cmd));1702	cmd.sta_id = sta->sta_id;1703 1704	if (iwl_mvm_has_new_station_api(mvm->fw) &&1705	    sta->type == IWL_STA_AUX_ACTIVITY)1706		cmd.mac_id_n_color = cpu_to_le32(mac_id);1707	else1708		cmd.mac_id_n_color = cpu_to_le32(FW_CMD_ID_AND_COLOR(mac_id,1709								     color));1710 1711	if (fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))1712		cmd.station_type = sta->type;1713 1714	if (!iwl_mvm_has_new_tx_api(mvm))1715		cmd.tfd_queue_msk = cpu_to_le32(sta->tfd_queue_msk);1716	cmd.tid_disable_tx = cpu_to_le16(0xffff);1717 1718	if (addr)1719		memcpy(cmd.addr, addr, ETH_ALEN);1720 1721	ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,1722					  iwl_mvm_add_sta_cmd_size(mvm),1723					  &cmd, &status);1724	if (ret)1725		return ret;1726 1727	switch (status & IWL_ADD_STA_STATUS_MASK) {1728	case ADD_STA_SUCCESS:1729		IWL_DEBUG_INFO(mvm, "Internal station added.\n");1730		return 0;1731	default:1732		ret = -EIO;1733		IWL_ERR(mvm, "Add internal station failed, status=0x%x\n",1734			status);1735		break;1736	}1737	return ret;1738}1739 1740/* Initialize driver data of a new sta */1741int iwl_mvm_sta_init(struct iwl_mvm *mvm, struct ieee80211_vif *vif,1742		     struct ieee80211_sta *sta, int sta_id, u8 sta_type)1743{1744	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);1745	struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);1746	struct iwl_mvm_rxq_dup_data *dup_data;1747	int i, ret = 0;1748 1749	lockdep_assert_held(&mvm->mutex);1750 1751	mvm_sta->mac_id_n_color = FW_CMD_ID_AND_COLOR(mvmvif->id,1752						      mvmvif->color);1753	mvm_sta->vif = vif;1754 1755	/* for MLD sta_id(s) should be allocated for each link before calling1756	 * this function1757	 */1758	if (!mvm->mld_api_is_used) {1759		if (WARN_ON(sta_id == IWL_MVM_INVALID_STA))1760			return -EINVAL;1761 1762		mvm_sta->deflink.sta_id = sta_id;1763		rcu_assign_pointer(mvm_sta->link[0], &mvm_sta->deflink);1764 1765		if (!mvm->trans->trans_cfg->gen2)1766			mvm_sta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize =1767				LINK_QUAL_AGG_FRAME_LIMIT_DEF;1768		else1769			mvm_sta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize =1770				LINK_QUAL_AGG_FRAME_LIMIT_GEN2_DEF;1771	}1772 1773	mvm_sta->tt_tx_protection = false;1774	mvm_sta->sta_type = sta_type;1775 1776	mvm_sta->tid_disable_agg = 0xffff; /* No aggs at first */1777 1778	for (i = 0; i <= IWL_MAX_TID_COUNT; i++) {1779		/*1780		 * Mark all queues for this STA as unallocated and defer TX1781		 * frames until the queue is allocated1782		 */1783		mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE;1784	}1785 1786	for (i = 0; i < ARRAY_SIZE(sta->txq); i++) {1787		struct iwl_mvm_txq *mvmtxq =1788			iwl_mvm_txq_from_mac80211(sta->txq[i]);1789 1790		mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE;1791		INIT_LIST_HEAD(&mvmtxq->list);1792		atomic_set(&mvmtxq->tx_request, 0);1793	}1794 1795	if (iwl_mvm_has_new_rx_api(mvm)) {1796		int q;1797 1798		dup_data = kcalloc(mvm->trans->num_rx_queues,1799				   sizeof(*dup_data), GFP_KERNEL);1800		if (!dup_data)1801			return -ENOMEM;1802		/*1803		 * Initialize all the last_seq values to 0xffff which can never1804		 * compare equal to the frame's seq_ctrl in the check in1805		 * iwl_mvm_is_dup() since the lower 4 bits are the fragment1806		 * number and fragmented packets don't reach that function.1807		 *1808		 * This thus allows receiving a packet with seqno 0 and the1809		 * retry bit set as the very first packet on a new TID.1810		 */1811		for (q = 0; q < mvm->trans->num_rx_queues; q++)1812			memset(dup_data[q].last_seq, 0xff,1813			       sizeof(dup_data[q].last_seq));1814		mvm_sta->dup_data = dup_data;1815	}1816 1817	if (!iwl_mvm_has_new_tx_api(mvm)) {1818		ret = iwl_mvm_reserve_sta_stream(mvm, sta,1819						 ieee80211_vif_type_p2p(vif));1820		if (ret)1821			return ret;1822	}1823 1824	/*1825	 * if rs is registered with mac80211, then "add station" will be handled1826	 * via the corresponding ops, otherwise need to notify rate scaling here1827	 */1828	if (iwl_mvm_has_tlc_offload(mvm))1829		iwl_mvm_rs_add_sta(mvm, mvm_sta);1830	else1831		spin_lock_init(&mvm_sta->deflink.lq_sta.rs_drv.pers.lock);1832 1833	iwl_mvm_toggle_tx_ant(mvm, &mvm_sta->tx_ant);1834 1835	/* MPDUs are counted only when EMLSR is possible */1836	if (vif->type == NL80211_IFTYPE_STATION && !vif->p2p &&1837	    !sta->tdls && ieee80211_vif_is_mld(vif)) {1838		mvm_sta->mpdu_counters =1839			kcalloc(mvm->trans->num_rx_queues,1840				sizeof(*mvm_sta->mpdu_counters),1841				GFP_KERNEL);1842		if (mvm_sta->mpdu_counters)1843			for (int q = 0; q < mvm->trans->num_rx_queues; q++)1844				spin_lock_init(&mvm_sta->mpdu_counters[q].lock);1845	}1846 1847	return 0;1848}1849 1850int iwl_mvm_add_sta(struct iwl_mvm *mvm,1851		    struct ieee80211_vif *vif,1852		    struct ieee80211_sta *sta)1853{1854	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);1855	struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);1856	int ret, sta_id;1857	bool sta_update = false;1858	unsigned int sta_flags = 0;1859 1860	lockdep_assert_held(&mvm->mutex);1861 1862	if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))1863		sta_id = iwl_mvm_find_free_sta_id(mvm,1864						  ieee80211_vif_type_p2p(vif));1865	else1866		sta_id = mvm_sta->deflink.sta_id;1867 1868	if (sta_id == IWL_MVM_INVALID_STA)1869		return -ENOSPC;1870 1871	spin_lock_init(&mvm_sta->lock);1872 1873	/* if this is a HW restart re-alloc existing queues */1874	if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {1875		struct iwl_mvm_int_sta tmp_sta = {1876			.sta_id = sta_id,1877			.type = mvm_sta->sta_type,1878		};1879 1880		/* First add an empty station since allocating1881		 * a queue requires a valid station1882		 */1883		ret = iwl_mvm_add_int_sta_common(mvm, &tmp_sta, sta->addr,1884						 mvmvif->id, mvmvif->color);1885		if (ret)1886			goto err;1887 1888		iwl_mvm_realloc_queues_after_restart(mvm, sta);1889		sta_update = true;1890		sta_flags = iwl_mvm_has_new_tx_api(mvm) ? 0 : STA_MODIFY_QUEUES;1891		goto update_fw;1892	}1893 1894	ret = iwl_mvm_sta_init(mvm, vif, sta, sta_id,1895			       sta->tdls ? IWL_STA_TDLS_LINK : IWL_STA_LINK);1896	if (ret)1897		goto err;1898 1899update_fw:1900	ret = iwl_mvm_sta_send_to_fw(mvm, sta, sta_update, sta_flags);1901	if (ret)1902		goto err;1903 1904	if (vif->type == NL80211_IFTYPE_STATION) {1905		if (!sta->tdls) {1906			WARN_ON(mvmvif->deflink.ap_sta_id != IWL_MVM_INVALID_STA);1907			mvmvif->deflink.ap_sta_id = sta_id;1908		} else {1909			WARN_ON(mvmvif->deflink.ap_sta_id == IWL_MVM_INVALID_STA);1910		}1911	}1912 1913	rcu_assign_pointer(mvm->fw_id_to_mac_id[sta_id], sta);1914 1915	return 0;1916 1917err:1918	return ret;1919}1920 1921int iwl_mvm_drain_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta,1922		      bool drain)1923{1924	struct iwl_mvm_add_sta_cmd cmd = {};1925	int ret;1926	u32 status;1927 1928	lockdep_assert_held(&mvm->mutex);1929 1930	cmd.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color);1931	cmd.sta_id = mvmsta->deflink.sta_id;1932	cmd.add_modify = STA_MODE_MODIFY;1933	cmd.station_flags = drain ? cpu_to_le32(STA_FLG_DRAIN_FLOW) : 0;1934	cmd.station_flags_msk = cpu_to_le32(STA_FLG_DRAIN_FLOW);1935 1936	status = ADD_STA_SUCCESS;1937	ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,1938					  iwl_mvm_add_sta_cmd_size(mvm),1939					  &cmd, &status);1940	if (ret)1941		return ret;1942 1943	switch (status & IWL_ADD_STA_STATUS_MASK) {1944	case ADD_STA_SUCCESS:1945		IWL_DEBUG_INFO(mvm, "Frames for staid %d will drained in fw\n",1946			       mvmsta->deflink.sta_id);1947		break;1948	default:1949		ret = -EIO;1950		IWL_ERR(mvm, "Couldn't drain frames for staid %d\n",1951			mvmsta->deflink.sta_id);1952		break;1953	}1954 1955	return ret;1956}1957 1958/*1959 * Remove a station from the FW table. Before sending the command to remove1960 * the station validate that the station is indeed known to the driver (sanity1961 * only).1962 */1963static int iwl_mvm_rm_sta_common(struct iwl_mvm *mvm, u8 sta_id)1964{1965	struct ieee80211_sta *sta;1966	struct iwl_mvm_rm_sta_cmd rm_sta_cmd = {1967		.sta_id = sta_id,1968	};1969	int ret;1970 1971	sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],1972					lockdep_is_held(&mvm->mutex));1973 1974	/* Note: internal stations are marked as error values */1975	if (!sta) {1976		IWL_ERR(mvm, "Invalid station id\n");1977		return -EINVAL;1978	}1979 1980	ret = iwl_mvm_send_cmd_pdu(mvm, REMOVE_STA, 0,1981				   sizeof(rm_sta_cmd), &rm_sta_cmd);1982	if (ret) {1983		IWL_ERR(mvm, "Failed to remove station. Id=%d\n", sta_id);1984		return ret;1985	}1986 1987	return 0;1988}1989 1990static void iwl_mvm_disable_sta_queues(struct iwl_mvm *mvm,1991				       struct ieee80211_vif *vif,1992				       struct ieee80211_sta *sta)1993{1994	struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);1995	int i;1996 1997	lockdep_assert_held(&mvm->mutex);1998 1999	for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) {2000		if (mvm_sta->tid_data[i].txq_id == IWL_MVM_INVALID_QUEUE)2001			continue;2002 2003		iwl_mvm_disable_txq(mvm, sta, mvm_sta->deflink.sta_id,2004				    &mvm_sta->tid_data[i].txq_id, i);2005		mvm_sta->tid_data[i].txq_id = IWL_MVM_INVALID_QUEUE;2006	}2007 2008	for (i = 0; i < ARRAY_SIZE(sta->txq); i++) {2009		struct iwl_mvm_txq *mvmtxq =2010			iwl_mvm_txq_from_mac80211(sta->txq[i]);2011 2012		spin_lock_bh(&mvm->add_stream_lock);2013		mvmtxq->txq_id = IWL_MVM_INVALID_QUEUE;2014		list_del_init(&mvmtxq->list);2015		clear_bit(IWL_MVM_TXQ_STATE_READY, &mvmtxq->state);2016		spin_unlock_bh(&mvm->add_stream_lock);2017	}2018}2019 2020int iwl_mvm_wait_sta_queues_empty(struct iwl_mvm *mvm,2021				  struct iwl_mvm_sta *mvm_sta)2022{2023	int i;2024 2025	for (i = 0; i < ARRAY_SIZE(mvm_sta->tid_data); i++) {2026		u16 txq_id;2027		int ret;2028 2029		spin_lock_bh(&mvm_sta->lock);2030		txq_id = mvm_sta->tid_data[i].txq_id;2031		spin_unlock_bh(&mvm_sta->lock);2032 2033		if (txq_id == IWL_MVM_INVALID_QUEUE)2034			continue;2035 2036		ret = iwl_trans_wait_txq_empty(mvm->trans, txq_id);2037		if (ret)2038			return ret;2039	}2040 2041	return 0;2042}2043 2044/* Execute the common part for both MLD and non-MLD modes.2045 * Returns if we're done with removing the station, either2046 * with error or success2047 */2048bool iwl_mvm_sta_del(struct iwl_mvm *mvm, struct ieee80211_vif *vif,2049		     struct ieee80211_sta *sta,2050		     struct ieee80211_link_sta *link_sta, int *ret)2051{2052	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);2053	struct iwl_mvm_vif_link_info *mvm_link =2054		mvmvif->link[link_sta->link_id];2055	struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);2056	struct iwl_mvm_link_sta *mvm_link_sta;2057	u8 sta_id;2058 2059	lockdep_assert_held(&mvm->mutex);2060 2061	mvm_link_sta =2062		rcu_dereference_protected(mvm_sta->link[link_sta->link_id],2063					  lockdep_is_held(&mvm->mutex));2064	sta_id = mvm_link_sta->sta_id;2065 2066	/* If there is a TXQ still marked as reserved - free it */2067	if (mvm_sta->reserved_queue != IEEE80211_INVAL_HW_QUEUE) {2068		u8 reserved_txq = mvm_sta->reserved_queue;2069		enum iwl_mvm_queue_status *status;2070 2071		/*2072		 * If no traffic has gone through the reserved TXQ - it2073		 * is still marked as IWL_MVM_QUEUE_RESERVED, and2074		 * should be manually marked as free again2075		 */2076		status = &mvm->queue_info[reserved_txq].status;2077		if (WARN((*status != IWL_MVM_QUEUE_RESERVED) &&2078			 (*status != IWL_MVM_QUEUE_FREE),2079			 "sta_id %d reserved txq %d status %d",2080			 sta_id, reserved_txq, *status)) {2081			*ret = -EINVAL;2082			return true;2083		}2084 2085		*status = IWL_MVM_QUEUE_FREE;2086	}2087 2088	if (vif->type == NL80211_IFTYPE_STATION &&2089	    mvm_link->ap_sta_id == sta_id) {2090		/* if associated - we can't remove the AP STA now */2091		if (vif->cfg.assoc)2092			return true;2093 2094		/* first remove remaining keys */2095		iwl_mvm_sec_key_remove_ap(mvm, vif, mvm_link, 0);2096 2097		/* unassoc - go ahead - remove the AP STA now */2098		mvm_link->ap_sta_id = IWL_MVM_INVALID_STA;2099	}2100 2101	/*2102	 * This shouldn't happen - the TDLS channel switch should be canceled2103	 * before the STA is removed.2104	 */2105	if (WARN_ON_ONCE(mvm->tdls_cs.peer.sta_id == sta_id)) {2106		mvm->tdls_cs.peer.sta_id = IWL_MVM_INVALID_STA;2107		cancel_delayed_work(&mvm->tdls_cs.dwork);2108	}2109 2110	return false;2111}2112 2113int iwl_mvm_rm_sta(struct iwl_mvm *mvm,2114		   struct ieee80211_vif *vif,2115		   struct ieee80211_sta *sta)2116{2117	struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);2118	int ret;2119 2120	lockdep_assert_held(&mvm->mutex);2121 2122	ret = iwl_mvm_drain_sta(mvm, mvm_sta, true);2123	if (ret)2124		return ret;2125 2126	/* flush its queues here since we are freeing mvm_sta */2127	ret = iwl_mvm_flush_sta(mvm, mvm_sta->deflink.sta_id,2128				mvm_sta->tfd_queue_msk);2129	if (ret)2130		return ret;2131	if (iwl_mvm_has_new_tx_api(mvm)) {2132		ret = iwl_mvm_wait_sta_queues_empty(mvm, mvm_sta);2133	} else {2134		u32 q_mask = mvm_sta->tfd_queue_msk;2135 2136		ret = iwl_trans_wait_tx_queues_empty(mvm->trans,2137						     q_mask);2138	}2139	if (ret)2140		return ret;2141 2142	ret = iwl_mvm_drain_sta(mvm, mvm_sta, false);2143 2144	iwl_mvm_disable_sta_queues(mvm, vif, sta);2145 2146	if (iwl_mvm_sta_del(mvm, vif, sta, &sta->deflink, &ret))2147		return ret;2148 2149	ret = iwl_mvm_rm_sta_common(mvm, mvm_sta->deflink.sta_id);2150	RCU_INIT_POINTER(mvm->fw_id_to_mac_id[mvm_sta->deflink.sta_id], NULL);2151 2152	return ret;2153}2154 2155int iwl_mvm_rm_sta_id(struct iwl_mvm *mvm,2156		      struct ieee80211_vif *vif,2157		      u8 sta_id)2158{2159	int ret = iwl_mvm_rm_sta_common(mvm, sta_id);2160 2161	lockdep_assert_held(&mvm->mutex);2162 2163	RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta_id], NULL);2164	return ret;2165}2166 2167int iwl_mvm_allocate_int_sta(struct iwl_mvm *mvm,2168			     struct iwl_mvm_int_sta *sta,2169			     u32 qmask, enum nl80211_iftype iftype,2170			     u8 type)2171{2172	if (!test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status) ||2173	    sta->sta_id == IWL_MVM_INVALID_STA) {2174		sta->sta_id = iwl_mvm_find_free_sta_id(mvm, iftype);2175		if (WARN_ON_ONCE(sta->sta_id == IWL_MVM_INVALID_STA))2176			return -ENOSPC;2177	}2178 2179	sta->tfd_queue_msk = qmask;2180	sta->type = type;2181 2182	/* put a non-NULL value so iterating over the stations won't stop */2183	RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], ERR_PTR(-EINVAL));2184	return 0;2185}2186 2187void iwl_mvm_dealloc_int_sta(struct iwl_mvm *mvm, struct iwl_mvm_int_sta *sta)2188{2189	RCU_INIT_POINTER(mvm->fw_id_to_mac_id[sta->sta_id], NULL);2190	memset(sta, 0, sizeof(struct iwl_mvm_int_sta));2191	sta->sta_id = IWL_MVM_INVALID_STA;2192}2193 2194static void iwl_mvm_enable_aux_snif_queue(struct iwl_mvm *mvm, u16 queue,2195					  u8 sta_id, u8 fifo)2196{2197	unsigned int wdg_timeout =2198		mvm->trans->trans_cfg->base_params->wd_timeout;2199	struct iwl_trans_txq_scd_cfg cfg = {2200		.fifo = fifo,2201		.sta_id = sta_id,2202		.tid = IWL_MAX_TID_COUNT,2203		.aggregate = false,2204		.frame_limit = IWL_FRAME_LIMIT,2205	};2206 2207	WARN_ON(iwl_mvm_has_new_tx_api(mvm));2208 2209	iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout);2210}2211 2212static int iwl_mvm_enable_aux_snif_queue_tvqm(struct iwl_mvm *mvm, u8 sta_id)2213{2214	unsigned int wdg_timeout =2215		mvm->trans->trans_cfg->base_params->wd_timeout;2216 2217	WARN_ON(!iwl_mvm_has_new_tx_api(mvm));2218 2219	return iwl_mvm_tvqm_enable_txq(mvm, NULL, sta_id, IWL_MAX_TID_COUNT,2220				       wdg_timeout);2221}2222 2223static int iwl_mvm_add_int_sta_with_queue(struct iwl_mvm *mvm, int macidx,2224					  int maccolor, u8 *addr,2225					  struct iwl_mvm_int_sta *sta,2226					  u16 *queue, int fifo)2227{2228	int ret;2229 2230	/* Map queue to fifo - needs to happen before adding station */2231	if (!iwl_mvm_has_new_tx_api(mvm))2232		iwl_mvm_enable_aux_snif_queue(mvm, *queue, sta->sta_id, fifo);2233 2234	ret = iwl_mvm_add_int_sta_common(mvm, sta, addr, macidx, maccolor);2235	if (ret) {2236		if (!iwl_mvm_has_new_tx_api(mvm))2237			iwl_mvm_disable_txq(mvm, NULL, sta->sta_id, queue,2238					    IWL_MAX_TID_COUNT);2239		return ret;2240	}2241 2242	/*2243	 * For 22000 firmware and on we cannot add queue to a station unknown2244	 * to firmware so enable queue here - after the station was added2245	 */2246	if (iwl_mvm_has_new_tx_api(mvm)) {2247		int txq;2248 2249		txq = iwl_mvm_enable_aux_snif_queue_tvqm(mvm, sta->sta_id);2250		if (txq < 0) {2251			iwl_mvm_rm_sta_common(mvm, sta->sta_id);2252			return txq;2253		}2254 2255		*queue = txq;2256	}2257 2258	return 0;2259}2260 2261int iwl_mvm_add_aux_sta(struct iwl_mvm *mvm, u32 lmac_id)2262{2263	int ret;2264	u32 qmask = mvm->aux_queue == IWL_MVM_INVALID_QUEUE ? 0 :2265		BIT(mvm->aux_queue);2266 2267	lockdep_assert_held(&mvm->mutex);2268 2269	/* Allocate aux station and assign to it the aux queue */2270	ret = iwl_mvm_allocate_int_sta(mvm, &mvm->aux_sta, qmask,2271				       NL80211_IFTYPE_UNSPECIFIED,2272				       IWL_STA_AUX_ACTIVITY);2273	if (ret)2274		return ret;2275 2276	/*2277	 * In CDB NICs we need to specify which lmac to use for aux activity2278	 * using the mac_id argument place to send lmac_id to the function2279	 */2280	ret = iwl_mvm_add_int_sta_with_queue(mvm, lmac_id, 0, NULL,2281					     &mvm->aux_sta, &mvm->aux_queue,2282					     IWL_MVM_TX_FIFO_MCAST);2283	if (ret) {2284		iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);2285		return ret;2286	}2287 2288	return 0;2289}2290 2291int iwl_mvm_add_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)2292{2293	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);2294 2295	lockdep_assert_held(&mvm->mutex);2296 2297	return iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id, mvmvif->color,2298					      NULL, &mvm->snif_sta,2299					      &mvm->snif_queue,2300					      IWL_MVM_TX_FIFO_BE);2301}2302 2303int iwl_mvm_rm_snif_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)2304{2305	int ret;2306 2307	lockdep_assert_held(&mvm->mutex);2308 2309	if (WARN_ON_ONCE(mvm->snif_sta.sta_id == IWL_MVM_INVALID_STA))2310		return -EINVAL;2311 2312	iwl_mvm_disable_txq(mvm, NULL, mvm->snif_sta.sta_id,2313			    &mvm->snif_queue, IWL_MAX_TID_COUNT);2314	ret = iwl_mvm_rm_sta_common(mvm, mvm->snif_sta.sta_id);2315	if (ret)2316		IWL_WARN(mvm, "Failed sending remove station\n");2317 2318	return ret;2319}2320 2321int iwl_mvm_rm_aux_sta(struct iwl_mvm *mvm)2322{2323	int ret;2324 2325	lockdep_assert_held(&mvm->mutex);2326 2327	if (WARN_ON_ONCE(mvm->aux_sta.sta_id == IWL_MVM_INVALID_STA))2328		return -EINVAL;2329 2330	iwl_mvm_disable_txq(mvm, NULL, mvm->aux_sta.sta_id,2331			    &mvm->aux_queue, IWL_MAX_TID_COUNT);2332	ret = iwl_mvm_rm_sta_common(mvm, mvm->aux_sta.sta_id);2333	if (ret)2334		IWL_WARN(mvm, "Failed sending remove station\n");2335	iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);2336 2337	return ret;2338}2339 2340void iwl_mvm_dealloc_snif_sta(struct iwl_mvm *mvm)2341{2342	iwl_mvm_dealloc_int_sta(mvm, &mvm->snif_sta);2343}2344 2345/*2346 * Send the add station command for the vif's broadcast station.2347 * Assumes that the station was already allocated.2348 *2349 * @mvm: the mvm component2350 * @vif: the interface to which the broadcast station is added2351 * @bsta: the broadcast station to add.2352 */2353int iwl_mvm_send_add_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)2354{2355	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);2356	struct iwl_mvm_int_sta *bsta = &mvmvif->deflink.bcast_sta;2357	static const u8 _baddr[] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};2358	const u8 *baddr = _baddr;2359	int queue;2360	int ret;2361	unsigned int wdg_timeout =2362		iwl_mvm_get_wd_timeout(mvm, vif);2363	struct iwl_trans_txq_scd_cfg cfg = {2364		.fifo = IWL_MVM_TX_FIFO_VO,2365		.sta_id = mvmvif->deflink.bcast_sta.sta_id,2366		.tid = IWL_MAX_TID_COUNT,2367		.aggregate = false,2368		.frame_limit = IWL_FRAME_LIMIT,2369	};2370 2371	lockdep_assert_held(&mvm->mutex);2372 2373	if (!iwl_mvm_has_new_tx_api(mvm)) {2374		if (vif->type == NL80211_IFTYPE_AP ||2375		    vif->type == NL80211_IFTYPE_ADHOC) {2376			queue = mvm->probe_queue;2377		} else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {2378			queue = mvm->p2p_dev_queue;2379		} else {2380			WARN(1, "Missing required TXQ for adding bcast STA\n");2381			return -EINVAL;2382		}2383 2384		bsta->tfd_queue_msk |= BIT(queue);2385 2386		iwl_mvm_enable_txq(mvm, NULL, queue, 0, &cfg, wdg_timeout);2387	}2388 2389	if (vif->type == NL80211_IFTYPE_ADHOC)2390		baddr = vif->bss_conf.bssid;2391 2392	if (WARN_ON_ONCE(bsta->sta_id == IWL_MVM_INVALID_STA))2393		return -ENOSPC;2394 2395	ret = iwl_mvm_add_int_sta_common(mvm, bsta, baddr,2396					 mvmvif->id, mvmvif->color);2397	if (ret)2398		return ret;2399 2400	/*2401	 * For 22000 firmware and on we cannot add queue to a station unknown2402	 * to firmware so enable queue here - after the station was added2403	 */2404	if (iwl_mvm_has_new_tx_api(mvm)) {2405		queue = iwl_mvm_tvqm_enable_txq(mvm, NULL, bsta->sta_id,2406						IWL_MAX_TID_COUNT,2407						wdg_timeout);2408		if (queue < 0) {2409			iwl_mvm_rm_sta_common(mvm, bsta->sta_id);2410			return queue;2411		}2412 2413		if (vif->type == NL80211_IFTYPE_AP ||2414		    vif->type == NL80211_IFTYPE_ADHOC) {2415			/* for queue management */2416			mvm->probe_queue = queue;2417			/* for use in TX */2418			mvmvif->deflink.mgmt_queue = queue;2419		} else if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {2420			mvm->p2p_dev_queue = queue;2421		}2422	} else if (vif->type == NL80211_IFTYPE_AP ||2423		   vif->type == NL80211_IFTYPE_ADHOC) {2424		/* set it for use in TX */2425		mvmvif->deflink.mgmt_queue = mvm->probe_queue;2426	}2427 2428	return 0;2429}2430 2431void iwl_mvm_free_bcast_sta_queues(struct iwl_mvm *mvm,2432				   struct ieee80211_vif *vif)2433{2434	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);2435	u16 *queueptr, queue;2436 2437	lockdep_assert_held(&mvm->mutex);2438 2439	iwl_mvm_flush_sta(mvm, mvmvif->deflink.bcast_sta.sta_id,2440			  mvmvif->deflink.bcast_sta.tfd_queue_msk);2441 2442	switch (vif->type) {2443	case NL80211_IFTYPE_AP:2444	case NL80211_IFTYPE_ADHOC:2445		queueptr = &mvm->probe_queue;2446		break;2447	case NL80211_IFTYPE_P2P_DEVICE:2448		queueptr = &mvm->p2p_dev_queue;2449		break;2450	default:2451		WARN(1, "Can't free bcast queue on vif type %d\n",2452		     vif->type);2453		return;2454	}2455 2456	queue = *queueptr;2457	iwl_mvm_disable_txq(mvm, NULL, mvmvif->deflink.bcast_sta.sta_id,2458			    queueptr, IWL_MAX_TID_COUNT);2459 2460	if (vif->type == NL80211_IFTYPE_AP || vif->type == NL80211_IFTYPE_ADHOC)2461		mvmvif->deflink.mgmt_queue = mvm->probe_queue;2462 2463	if (iwl_mvm_has_new_tx_api(mvm))2464		return;2465 2466	WARN_ON(!(mvmvif->deflink.bcast_sta.tfd_queue_msk & BIT(queue)));2467	mvmvif->deflink.bcast_sta.tfd_queue_msk &= ~BIT(queue);2468}2469 2470/* Send the FW a request to remove the station from it's internal data2471 * structures, but DO NOT remove the entry from the local data structures. */2472int iwl_mvm_send_rm_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)2473{2474	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);2475	int ret;2476 2477	lockdep_assert_held(&mvm->mutex);2478 2479	iwl_mvm_free_bcast_sta_queues(mvm, vif);2480 2481	ret = iwl_mvm_rm_sta_common(mvm, mvmvif->deflink.bcast_sta.sta_id);2482	if (ret)2483		IWL_WARN(mvm, "Failed sending remove station\n");2484	return ret;2485}2486 2487int iwl_mvm_alloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)2488{2489	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);2490 2491	lockdep_assert_held(&mvm->mutex);2492 2493	return iwl_mvm_allocate_int_sta(mvm, &mvmvif->deflink.bcast_sta, 0,2494					ieee80211_vif_type_p2p(vif),2495					IWL_STA_GENERAL_PURPOSE);2496}2497 2498/* Allocate a new station entry for the broadcast station to the given vif,2499 * and send it to the FW.2500 * Note that each P2P mac should have its own broadcast station.2501 *2502 * @mvm: the mvm component2503 * @vif: the interface to which the broadcast station is added2504 * @bsta: the broadcast station to add. */2505int iwl_mvm_add_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)2506{2507	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);2508	struct iwl_mvm_int_sta *bsta = &mvmvif->deflink.bcast_sta;2509	int ret;2510 2511	lockdep_assert_held(&mvm->mutex);2512 2513	ret = iwl_mvm_alloc_bcast_sta(mvm, vif);2514	if (ret)2515		return ret;2516 2517	ret = iwl_mvm_send_add_bcast_sta(mvm, vif);2518 2519	if (ret)2520		iwl_mvm_dealloc_int_sta(mvm, bsta);2521 2522	return ret;2523}2524 2525void iwl_mvm_dealloc_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)2526{2527	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);2528 2529	iwl_mvm_dealloc_int_sta(mvm, &mvmvif->deflink.bcast_sta);2530}2531 2532/*2533 * Send the FW a request to remove the station from it's internal data2534 * structures, and in addition remove it from the local data structure.2535 */2536int iwl_mvm_rm_p2p_bcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)2537{2538	int ret;2539 2540	lockdep_assert_held(&mvm->mutex);2541 2542	ret = iwl_mvm_send_rm_bcast_sta(mvm, vif);2543 2544	iwl_mvm_dealloc_bcast_sta(mvm, vif);2545 2546	return ret;2547}2548 2549/*2550 * Allocate a new station entry for the multicast station to the given vif,2551 * and send it to the FW.2552 * Note that each AP/GO mac should have its own multicast station.2553 *2554 * @mvm: the mvm component2555 * @vif: the interface to which the multicast station is added2556 */2557int iwl_mvm_add_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)2558{2559	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);2560	struct iwl_mvm_int_sta *msta = &mvmvif->deflink.mcast_sta;2561	static const u8 _maddr[] = {0x03, 0x00, 0x00, 0x00, 0x00, 0x00};2562	const u8 *maddr = _maddr;2563	struct iwl_trans_txq_scd_cfg cfg = {2564		.fifo = vif->type == NL80211_IFTYPE_AP ?2565			IWL_MVM_TX_FIFO_MCAST : IWL_MVM_TX_FIFO_BE,2566		.sta_id = msta->sta_id,2567		.tid = 0,2568		.aggregate = false,2569		.frame_limit = IWL_FRAME_LIMIT,2570	};2571	unsigned int timeout = iwl_mvm_get_wd_timeout(mvm, vif);2572	int ret;2573 2574	lockdep_assert_held(&mvm->mutex);2575 2576	if (WARN_ON(vif->type != NL80211_IFTYPE_AP &&2577		    vif->type != NL80211_IFTYPE_ADHOC))2578		return -EOPNOTSUPP;2579 2580	/*2581	 * In IBSS, ieee80211_check_queues() sets the cab_queue to be2582	 * invalid, so make sure we use the queue we want.2583	 * Note that this is done here as we want to avoid making DQA2584	 * changes in mac80211 layer.2585	 */2586	if (vif->type == NL80211_IFTYPE_ADHOC)2587		mvmvif->deflink.cab_queue = IWL_MVM_DQA_GCAST_QUEUE;2588 2589	/*2590	 * While in previous FWs we had to exclude cab queue from TFD queue2591	 * mask, now it is needed as any other queue.2592	 */2593	if (!iwl_mvm_has_new_tx_api(mvm) &&2594	    fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE)) {2595		iwl_mvm_enable_txq(mvm, NULL, mvmvif->deflink.cab_queue, 0,2596				   &cfg,2597				   timeout);2598		msta->tfd_queue_msk |= BIT(mvmvif->deflink.cab_queue);2599	}2600	ret = iwl_mvm_add_int_sta_common(mvm, msta, maddr,2601					 mvmvif->id, mvmvif->color);2602	if (ret)2603		goto err;2604 2605	/*2606	 * Enable cab queue after the ADD_STA command is sent.2607	 * This is needed for 22000 firmware which won't accept SCD_QUEUE_CFG2608	 * command with unknown station id, and for FW that doesn't support2609	 * station API since the cab queue is not included in the2610	 * tfd_queue_mask.2611	 */2612	if (iwl_mvm_has_new_tx_api(mvm)) {2613		int queue = iwl_mvm_tvqm_enable_txq(mvm, NULL, msta->sta_id,2614						    0, timeout);2615		if (queue < 0) {2616			ret = queue;2617			goto err;2618		}2619		mvmvif->deflink.cab_queue = queue;2620	} else if (!fw_has_api(&mvm->fw->ucode_capa,2621			       IWL_UCODE_TLV_API_STA_TYPE))2622		iwl_mvm_enable_txq(mvm, NULL, mvmvif->deflink.cab_queue, 0,2623				   &cfg,2624				   timeout);2625 2626	return 0;2627err:2628	iwl_mvm_dealloc_int_sta(mvm, msta);2629	return ret;2630}2631 2632static int __iwl_mvm_remove_sta_key(struct iwl_mvm *mvm, u8 sta_id,2633				    struct ieee80211_key_conf *keyconf,2634				    bool mcast)2635{2636	union {2637		struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1;2638		struct iwl_mvm_add_sta_key_cmd cmd;2639	} u = {};2640	bool new_api = fw_has_api(&mvm->fw->ucode_capa,2641				  IWL_UCODE_TLV_API_TKIP_MIC_KEYS);2642	__le16 key_flags;2643	int ret, size;2644	u32 status;2645 2646	/* This is a valid situation for GTK removal */2647	if (sta_id == IWL_MVM_INVALID_STA)2648		return 0;2649 2650	key_flags = cpu_to_le16((keyconf->keyidx << STA_KEY_FLG_KEYID_POS) &2651				 STA_KEY_FLG_KEYID_MSK);2652	key_flags |= cpu_to_le16(STA_KEY_FLG_NO_ENC | STA_KEY_FLG_WEP_KEY_MAP);2653	key_flags |= cpu_to_le16(STA_KEY_NOT_VALID);2654 2655	if (mcast)2656		key_flags |= cpu_to_le16(STA_KEY_MULTICAST);2657 2658	/*2659	 * The fields assigned here are in the same location at the start2660	 * of the command, so we can do this union trick.2661	 */2662	u.cmd.common.key_flags = key_flags;2663	u.cmd.common.key_offset = keyconf->hw_key_idx;2664	u.cmd.common.sta_id = sta_id;2665 2666	size = new_api ? sizeof(u.cmd) : sizeof(u.cmd_v1);2667 2668	status = ADD_STA_SUCCESS;2669	ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size, &u.cmd,2670					  &status);2671 2672	switch (status) {2673	case ADD_STA_SUCCESS:2674		IWL_DEBUG_WEP(mvm, "MODIFY_STA: remove sta key passed\n");2675		break;2676	default:2677		ret = -EIO;2678		IWL_ERR(mvm, "MODIFY_STA: remove sta key failed\n");2679		break;2680	}2681 2682	return ret;2683}2684 2685/*2686 * Send the FW a request to remove the station from it's internal data2687 * structures, and in addition remove it from the local data structure.2688 */2689int iwl_mvm_rm_mcast_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif)2690{2691	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);2692	int ret;2693 2694	lockdep_assert_held(&mvm->mutex);2695 2696	iwl_mvm_flush_sta(mvm, mvmvif->deflink.mcast_sta.sta_id,2697			  mvmvif->deflink.mcast_sta.tfd_queue_msk);2698 2699	iwl_mvm_disable_txq(mvm, NULL, mvmvif->deflink.mcast_sta.sta_id,2700			    &mvmvif->deflink.cab_queue, 0);2701 2702	ret = iwl_mvm_rm_sta_common(mvm, mvmvif->deflink.mcast_sta.sta_id);2703	if (ret)2704		IWL_WARN(mvm, "Failed sending remove station\n");2705 2706	return ret;2707}2708 2709static void iwl_mvm_sync_rxq_del_ba(struct iwl_mvm *mvm, u8 baid)2710{2711	struct iwl_mvm_delba_data notif = {2712		.baid = baid,2713	};2714 2715	iwl_mvm_sync_rx_queues_internal(mvm, IWL_MVM_RXQ_NOTIF_DEL_BA, true,2716					&notif, sizeof(notif));2717};2718 2719static void iwl_mvm_free_reorder(struct iwl_mvm *mvm,2720				 struct iwl_mvm_baid_data *data)2721{2722	int i;2723 2724	iwl_mvm_sync_rxq_del_ba(mvm, data->baid);2725 2726	for (i = 0; i < mvm->trans->num_rx_queues; i++) {2727		int j;2728		struct iwl_mvm_reorder_buffer *reorder_buf =2729			&data->reorder_buf[i];2730		struct iwl_mvm_reorder_buf_entry *entries =2731			&data->entries[i * data->entries_per_queue];2732 2733		spin_lock_bh(&reorder_buf->lock);2734		if (likely(!reorder_buf->num_stored)) {2735			spin_unlock_bh(&reorder_buf->lock);2736			continue;2737		}2738 2739		/*2740		 * This shouldn't happen in regular DELBA since the internal2741		 * delBA notification should trigger a release of all frames in2742		 * the reorder buffer.2743		 */2744		WARN_ON(1);2745 2746		for (j = 0; j < data->buf_size; j++)2747			__skb_queue_purge(&entries[j].frames);2748 2749		spin_unlock_bh(&reorder_buf->lock);2750	}2751}2752 2753static void iwl_mvm_init_reorder_buffer(struct iwl_mvm *mvm,2754					struct iwl_mvm_baid_data *data,2755					u16 ssn)2756{2757	int i;2758 2759	for (i = 0; i < mvm->trans->num_rx_queues; i++) {2760		struct iwl_mvm_reorder_buffer *reorder_buf =2761			&data->reorder_buf[i];2762		struct iwl_mvm_reorder_buf_entry *entries =2763			&data->entries[i * data->entries_per_queue];2764		int j;2765 2766		reorder_buf->num_stored = 0;2767		reorder_buf->head_sn = ssn;2768		spin_lock_init(&reorder_buf->lock);2769		reorder_buf->queue = i;2770		reorder_buf->valid = false;2771		for (j = 0; j < data->buf_size; j++)2772			__skb_queue_head_init(&entries[j].frames);2773	}2774}2775 2776static int iwl_mvm_fw_baid_op_sta(struct iwl_mvm *mvm,2777				  struct ieee80211_sta *sta,2778				  bool start, int tid, u16 ssn,2779				  u16 buf_size)2780{2781	struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);2782	struct iwl_mvm_add_sta_cmd cmd = {2783		.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color),2784		.sta_id = mvm_sta->deflink.sta_id,2785		.add_modify = STA_MODE_MODIFY,2786	};2787	u32 status;2788	int ret;2789 2790	if (start) {2791		cmd.add_immediate_ba_tid = tid;2792		cmd.add_immediate_ba_ssn = cpu_to_le16(ssn);2793		cmd.rx_ba_window = cpu_to_le16(buf_size);2794		cmd.modify_mask = STA_MODIFY_ADD_BA_TID;2795	} else {2796		cmd.remove_immediate_ba_tid = tid;2797		cmd.modify_mask = STA_MODIFY_REMOVE_BA_TID;2798	}2799 2800	status = ADD_STA_SUCCESS;2801	ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,2802					  iwl_mvm_add_sta_cmd_size(mvm),2803					  &cmd, &status);2804	if (ret)2805		return ret;2806 2807	switch (status & IWL_ADD_STA_STATUS_MASK) {2808	case ADD_STA_SUCCESS:2809		IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n",2810			     start ? "start" : "stopp");2811		if (WARN_ON(start && iwl_mvm_has_new_rx_api(mvm) &&2812			    !(status & IWL_ADD_STA_BAID_VALID_MASK)))2813			return -EINVAL;2814		return u32_get_bits(status, IWL_ADD_STA_BAID_MASK);2815	case ADD_STA_IMMEDIATE_BA_FAILURE:2816		IWL_WARN(mvm, "RX BA Session refused by fw\n");2817		return -ENOSPC;2818	default:2819		IWL_ERR(mvm, "RX BA Session failed %sing, status 0x%x\n",2820			start ? "start" : "stopp", status);2821		return -EIO;2822	}2823}2824 2825static int iwl_mvm_fw_baid_op_cmd(struct iwl_mvm *mvm,2826				  struct ieee80211_sta *sta,2827				  bool start, int tid, u16 ssn,2828				  u16 buf_size, int baid)2829{2830	struct iwl_rx_baid_cfg_cmd cmd = {2831		.action = start ? cpu_to_le32(IWL_RX_BAID_ACTION_ADD) :2832				  cpu_to_le32(IWL_RX_BAID_ACTION_REMOVE),2833	};2834	struct iwl_host_cmd hcmd = {2835		.id = WIDE_ID(DATA_PATH_GROUP, RX_BAID_ALLOCATION_CONFIG_CMD),2836		.flags = CMD_SEND_IN_RFKILL,2837		.len[0] = sizeof(cmd),2838		.data[0] = &cmd,2839	};2840	int ret;2841 2842	BUILD_BUG_ON(sizeof(struct iwl_rx_baid_cfg_resp) != sizeof(baid));2843 2844	if (start) {2845		cmd.alloc.sta_id_mask =2846			cpu_to_le32(iwl_mvm_sta_fw_id_mask(mvm, sta, -1));2847		cmd.alloc.tid = tid;2848		cmd.alloc.ssn = cpu_to_le16(ssn);2849		cmd.alloc.win_size = cpu_to_le16(buf_size);2850		baid = -EIO;2851	} else if (iwl_fw_lookup_cmd_ver(mvm->fw, hcmd.id, 1) == 1) {2852		cmd.remove_v1.baid = cpu_to_le32(baid);2853		BUILD_BUG_ON(sizeof(cmd.remove_v1) > sizeof(cmd.remove));2854	} else {2855		cmd.remove.sta_id_mask =2856			cpu_to_le32(iwl_mvm_sta_fw_id_mask(mvm, sta, -1));2857		cmd.remove.tid = cpu_to_le32(tid);2858	}2859 2860	ret = iwl_mvm_send_cmd_status(mvm, &hcmd, &baid);2861	if (ret)2862		return ret;2863 2864	if (!start) {2865		/* ignore firmware baid on remove */2866		baid = 0;2867	}2868 2869	IWL_DEBUG_HT(mvm, "RX BA Session %sed in fw\n",2870		     start ? "start" : "stopp");2871 2872	if (baid < 0 || baid >= ARRAY_SIZE(mvm->baid_map))2873		return -EINVAL;2874 2875	return baid;2876}2877 2878static int iwl_mvm_fw_baid_op(struct iwl_mvm *mvm, struct ieee80211_sta *sta,2879			      bool start, int tid, u16 ssn, u16 buf_size,2880			      int baid)2881{2882	if (fw_has_capa(&mvm->fw->ucode_capa,2883			IWL_UCODE_TLV_CAPA_BAID_ML_SUPPORT))2884		return iwl_mvm_fw_baid_op_cmd(mvm, sta, start,2885					      tid, ssn, buf_size, baid);2886 2887	return iwl_mvm_fw_baid_op_sta(mvm, sta, start,2888				      tid, ssn, buf_size);2889}2890 2891int iwl_mvm_sta_rx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta,2892		       int tid, u16 ssn, bool start, u16 buf_size, u16 timeout)2893{2894	struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);2895	struct iwl_mvm_baid_data *baid_data = NULL;2896	int ret, baid;2897	u32 max_ba_id_sessions = iwl_mvm_has_new_tx_api(mvm) ? IWL_MAX_BAID :2898							       IWL_MAX_BAID_OLD;2899 2900	lockdep_assert_held(&mvm->mutex);2901 2902	if (start && mvm->rx_ba_sessions >= max_ba_id_sessions) {2903		IWL_WARN(mvm, "Not enough RX BA SESSIONS\n");2904		return -ENOSPC;2905	}2906 2907	if (iwl_mvm_has_new_rx_api(mvm) && start) {2908		u32 reorder_buf_size = buf_size * sizeof(baid_data->entries[0]);2909 2910		/* sparse doesn't like the __align() so don't check */2911#ifndef __CHECKER__2912		/*2913		 * The division below will be OK if either the cache line size2914		 * can be divided by the entry size (ALIGN will round up) or if2915		 * if the entry size can be divided by the cache line size, in2916		 * which case the ALIGN() will do nothing.2917		 */2918		BUILD_BUG_ON(SMP_CACHE_BYTES % sizeof(baid_data->entries[0]) &&2919			     sizeof(baid_data->entries[0]) % SMP_CACHE_BYTES);2920#endif2921 2922		/*2923		 * Upward align the reorder buffer size to fill an entire cache2924		 * line for each queue, to avoid sharing cache lines between2925		 * different queues.2926		 */2927		reorder_buf_size = ALIGN(reorder_buf_size, SMP_CACHE_BYTES);2928 2929		/*2930		 * Allocate here so if allocation fails we can bail out early2931		 * before starting the BA session in the firmware2932		 */2933		baid_data = kzalloc(sizeof(*baid_data) +2934				    mvm->trans->num_rx_queues *2935				    reorder_buf_size,2936				    GFP_KERNEL);2937		if (!baid_data)2938			return -ENOMEM;2939 2940		/*2941		 * This division is why we need the above BUILD_BUG_ON(),2942		 * if that doesn't hold then this will not be right.2943		 */2944		baid_data->entries_per_queue =2945			reorder_buf_size / sizeof(baid_data->entries[0]);2946	}2947 2948	if (iwl_mvm_has_new_rx_api(mvm) && !start) {2949		baid = mvm_sta->tid_to_baid[tid];2950	} else {2951		/* we don't really need it in this case */2952		baid = -1;2953	}2954 2955	/* Don't send command to remove (start=0) BAID during restart */2956	if (start || !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))2957		baid = iwl_mvm_fw_baid_op(mvm, sta, start, tid, ssn, buf_size,2958					  baid);2959 2960	if (baid < 0) {2961		ret = baid;2962		goto out_free;2963	}2964 2965	if (start) {2966		mvm->rx_ba_sessions++;2967 2968		if (!iwl_mvm_has_new_rx_api(mvm))2969			return 0;2970 2971		baid_data->baid = baid;2972		baid_data->timeout = timeout;2973		baid_data->last_rx = jiffies;2974		baid_data->rcu_ptr = &mvm->baid_map[baid];2975		timer_setup(&baid_data->session_timer,2976			    iwl_mvm_rx_agg_session_expired, 0);2977		baid_data->mvm = mvm;2978		baid_data->tid = tid;2979		baid_data->sta_mask = iwl_mvm_sta_fw_id_mask(mvm, sta, -1);2980		baid_data->buf_size = buf_size;2981 2982		mvm_sta->tid_to_baid[tid] = baid;2983		if (timeout)2984			mod_timer(&baid_data->session_timer,2985				  TU_TO_EXP_TIME(timeout * 2));2986 2987		iwl_mvm_init_reorder_buffer(mvm, baid_data, ssn);2988		/*2989		 * protect the BA data with RCU to cover a case where our2990		 * internal RX sync mechanism will timeout (not that it's2991		 * supposed to happen) and we will free the session data while2992		 * RX is being processed in parallel2993		 */2994		IWL_DEBUG_HT(mvm, "Sta %d(%d) is assigned to BAID %d\n",2995			     mvm_sta->deflink.sta_id, tid, baid);2996		WARN_ON(rcu_access_pointer(mvm->baid_map[baid]));2997		rcu_assign_pointer(mvm->baid_map[baid], baid_data);2998	} else  {2999		baid = mvm_sta->tid_to_baid[tid];3000 3001		if (mvm->rx_ba_sessions > 0)3002			/* check that restart flow didn't zero the counter */3003			mvm->rx_ba_sessions--;3004		if (!iwl_mvm_has_new_rx_api(mvm))3005			return 0;3006 3007		if (WARN_ON(baid == IWL_RX_REORDER_DATA_INVALID_BAID))3008			return -EINVAL;3009 3010		baid_data = rcu_access_pointer(mvm->baid_map[baid]);3011		if (WARN_ON(!baid_data))3012			return -EINVAL;3013 3014		/* synchronize all rx queues so we can safely delete */3015		iwl_mvm_free_reorder(mvm, baid_data);3016		timer_shutdown_sync(&baid_data->session_timer);3017		RCU_INIT_POINTER(mvm->baid_map[baid], NULL);3018		kfree_rcu(baid_data, rcu_head);3019		IWL_DEBUG_HT(mvm, "BAID %d is free\n", baid);3020	}3021	return 0;3022 3023out_free:3024	kfree(baid_data);3025	return ret;3026}3027 3028int iwl_mvm_sta_tx_agg(struct iwl_mvm *mvm, struct ieee80211_sta *sta,3029		       int tid, u8 queue, bool start)3030{3031	struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);3032	struct iwl_mvm_add_sta_cmd cmd = {};3033	int ret;3034	u32 status;3035 3036	lockdep_assert_held(&mvm->mutex);3037 3038	if (start) {3039		mvm_sta->tfd_queue_msk |= BIT(queue);3040		mvm_sta->tid_disable_agg &= ~BIT(tid);3041	} else {3042		/* In DQA-mode the queue isn't removed on agg termination */3043		mvm_sta->tid_disable_agg |= BIT(tid);3044	}3045 3046	cmd.mac_id_n_color = cpu_to_le32(mvm_sta->mac_id_n_color);3047	cmd.sta_id = mvm_sta->deflink.sta_id;3048	cmd.add_modify = STA_MODE_MODIFY;3049	if (!iwl_mvm_has_new_tx_api(mvm))3050		cmd.modify_mask = STA_MODIFY_QUEUES;3051	cmd.modify_mask |= STA_MODIFY_TID_DISABLE_TX;3052	cmd.tfd_queue_msk = cpu_to_le32(mvm_sta->tfd_queue_msk);3053	cmd.tid_disable_tx = cpu_to_le16(mvm_sta->tid_disable_agg);3054 3055	status = ADD_STA_SUCCESS;3056	ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA,3057					  iwl_mvm_add_sta_cmd_size(mvm),3058					  &cmd, &status);3059	if (ret)3060		return ret;3061 3062	switch (status & IWL_ADD_STA_STATUS_MASK) {3063	case ADD_STA_SUCCESS:3064		break;3065	default:3066		ret = -EIO;3067		IWL_ERR(mvm, "TX BA Session failed %sing, status 0x%x\n",3068			start ? "start" : "stopp", status);3069		break;3070	}3071 3072	return ret;3073}3074 3075const u8 tid_to_mac80211_ac[] = {3076	IEEE80211_AC_BE,3077	IEEE80211_AC_BK,3078	IEEE80211_AC_BK,3079	IEEE80211_AC_BE,3080	IEEE80211_AC_VI,3081	IEEE80211_AC_VI,3082	IEEE80211_AC_VO,3083	IEEE80211_AC_VO,3084	IEEE80211_AC_VO, /* We treat MGMT as TID 8, which is set as AC_VO */3085};3086 3087static const u8 tid_to_ucode_ac[] = {3088	AC_BE,3089	AC_BK,3090	AC_BK,3091	AC_BE,3092	AC_VI,3093	AC_VI,3094	AC_VO,3095	AC_VO,3096};3097 3098int iwl_mvm_sta_tx_agg_start(struct iwl_mvm *mvm, struct ieee80211_vif *vif,3099			     struct ieee80211_sta *sta, u16 tid, u16 *ssn)3100{3101	struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);3102	struct iwl_mvm_tid_data *tid_data;3103	u16 normalized_ssn;3104	u16 txq_id;3105	int ret;3106 3107	if (WARN_ON_ONCE(tid >= IWL_MAX_TID_COUNT))3108		return -EINVAL;3109 3110	if (mvmsta->tid_data[tid].state != IWL_AGG_QUEUED &&3111	    mvmsta->tid_data[tid].state != IWL_AGG_OFF) {3112		IWL_ERR(mvm,3113			"Start AGG when state is not IWL_AGG_QUEUED or IWL_AGG_OFF %d!\n",3114			mvmsta->tid_data[tid].state);3115		return -ENXIO;3116	}3117 3118	lockdep_assert_held(&mvm->mutex);3119 3120	if (mvmsta->tid_data[tid].txq_id == IWL_MVM_INVALID_QUEUE &&3121	    iwl_mvm_has_new_tx_api(mvm)) {3122		u8 ac = tid_to_mac80211_ac[tid];3123 3124		ret = iwl_mvm_sta_alloc_queue_tvqm(mvm, sta, ac, tid);3125		if (ret)3126			return ret;3127	}3128 3129	spin_lock_bh(&mvmsta->lock);3130 3131	/*3132	 * Note the possible cases:3133	 *  1. An enabled TXQ - TXQ needs to become agg'ed3134	 *  2. The TXQ hasn't yet been enabled, so find a free one and mark3135	 *	it as reserved3136	 */3137	txq_id = mvmsta->tid_data[tid].txq_id;3138	if (txq_id == IWL_MVM_INVALID_QUEUE) {3139		ret = iwl_mvm_find_free_queue(mvm, mvmsta->deflink.sta_id,3140					      IWL_MVM_DQA_MIN_DATA_QUEUE,3141					      IWL_MVM_DQA_MAX_DATA_QUEUE);3142		if (ret < 0) {3143			IWL_ERR(mvm, "Failed to allocate agg queue\n");3144			goto out;3145		}3146 3147		txq_id = ret;3148 3149		/* TXQ hasn't yet been enabled, so mark it only as reserved */3150		mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_RESERVED;3151	} else if (WARN_ON(txq_id >= IWL_MAX_HW_QUEUES)) {3152		ret = -ENXIO;3153		IWL_ERR(mvm, "tid_id %d out of range (0, %d)!\n",3154			tid, IWL_MAX_HW_QUEUES - 1);3155		goto out;3156 3157	} else if (unlikely(mvm->queue_info[txq_id].status ==3158			    IWL_MVM_QUEUE_SHARED)) {3159		ret = -ENXIO;3160		IWL_DEBUG_TX_QUEUES(mvm,3161				    "Can't start tid %d agg on shared queue!\n",3162				    tid);3163		goto out;3164	}3165 3166	IWL_DEBUG_TX_QUEUES(mvm,3167			    "AGG for tid %d will be on queue #%d\n",3168			    tid, txq_id);3169 3170	tid_data = &mvmsta->tid_data[tid];3171	tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);3172	tid_data->txq_id = txq_id;3173	*ssn = tid_data->ssn;3174 3175	IWL_DEBUG_TX_QUEUES(mvm,3176			    "Start AGG: sta %d tid %d queue %d - ssn = %d, next_recl = %d\n",3177			    mvmsta->deflink.sta_id, tid, txq_id,3178			    tid_data->ssn,3179			    tid_data->next_reclaimed);3180 3181	/*3182	 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need3183	 * to align the wrap around of ssn so we compare relevant values.3184	 */3185	normalized_ssn = tid_data->ssn;3186	if (mvm->trans->trans_cfg->gen2)3187		normalized_ssn &= 0xff;3188 3189	if (normalized_ssn == tid_data->next_reclaimed) {3190		tid_data->state = IWL_AGG_STARTING;3191		ret = IEEE80211_AMPDU_TX_START_IMMEDIATE;3192	} else {3193		tid_data->state = IWL_EMPTYING_HW_QUEUE_ADDBA;3194		ret = IEEE80211_AMPDU_TX_START_DELAY_ADDBA;3195	}3196 3197out:3198	spin_unlock_bh(&mvmsta->lock);3199 3200	return ret;3201}3202 3203int iwl_mvm_sta_tx_agg_oper(struct iwl_mvm *mvm, struct ieee80211_vif *vif,3204			    struct ieee80211_sta *sta, u16 tid, u16 buf_size,3205			    bool amsdu)3206{3207	struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);3208	struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];3209	unsigned int wdg_timeout =3210		iwl_mvm_get_wd_timeout(mvm, vif);3211	int queue, ret;3212	bool alloc_queue = true;3213	enum iwl_mvm_queue_status queue_status;3214	u16 ssn;3215 3216	struct iwl_trans_txq_scd_cfg cfg = {3217		.sta_id = mvmsta->deflink.sta_id,3218		.tid = tid,3219		.frame_limit = buf_size,3220		.aggregate = true,3221	};3222 3223	/*3224	 * When FW supports TLC_OFFLOAD, it also implements Tx aggregation3225	 * manager, so this function should never be called in this case.3226	 */3227	if (WARN_ON_ONCE(iwl_mvm_has_tlc_offload(mvm)))3228		return -EINVAL;3229 3230	BUILD_BUG_ON((sizeof(mvmsta->agg_tids) * BITS_PER_BYTE)3231		     != IWL_MAX_TID_COUNT);3232 3233	spin_lock_bh(&mvmsta->lock);3234	ssn = tid_data->ssn;3235	queue = tid_data->txq_id;3236	tid_data->state = IWL_AGG_ON;3237	mvmsta->agg_tids |= BIT(tid);3238	tid_data->ssn = 0xffff;3239	tid_data->amsdu_in_ampdu_allowed = amsdu;3240	spin_unlock_bh(&mvmsta->lock);3241 3242	if (iwl_mvm_has_new_tx_api(mvm)) {3243		/*3244		 * If there is no queue for this tid, iwl_mvm_sta_tx_agg_start()3245		 * would have failed, so if we are here there is no need to3246		 * allocate a queue.3247		 * However, if aggregation size is different than the default3248		 * size, the scheduler should be reconfigured.3249		 * We cannot do this with the new TX API, so return unsupported3250		 * for now, until it will be offloaded to firmware..3251		 * Note that if SCD default value changes - this condition3252		 * should be updated as well.3253		 */3254		if (buf_size < IWL_FRAME_LIMIT)3255			return -EOPNOTSUPP;3256 3257		ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true);3258		if (ret)3259			return -EIO;3260		goto out;3261	}3262 3263	cfg.fifo = iwl_mvm_ac_to_tx_fifo[tid_to_mac80211_ac[tid]];3264 3265	queue_status = mvm->queue_info[queue].status;3266 3267	/* Maybe there is no need to even alloc a queue... */3268	if (mvm->queue_info[queue].status == IWL_MVM_QUEUE_READY)3269		alloc_queue = false;3270 3271	/*3272	 * Only reconfig the SCD for the queue if the window size has3273	 * changed from current (become smaller)3274	 */3275	if (!alloc_queue && buf_size < IWL_FRAME_LIMIT) {3276		/*3277		 * If reconfiguring an existing queue, it first must be3278		 * drained3279		 */3280		ret = iwl_trans_wait_tx_queues_empty(mvm->trans,3281						     BIT(queue));3282		if (ret) {3283			IWL_ERR(mvm,3284				"Error draining queue before reconfig\n");3285			return ret;3286		}3287 3288		ret = iwl_mvm_reconfig_scd(mvm, queue, cfg.fifo,3289					   mvmsta->deflink.sta_id, tid,3290					   buf_size, ssn);3291		if (ret) {3292			IWL_ERR(mvm,3293				"Error reconfiguring TXQ #%d\n", queue);3294			return ret;3295		}3296	}3297 3298	if (alloc_queue)3299		iwl_mvm_enable_txq(mvm, sta, queue, ssn,3300				   &cfg, wdg_timeout);3301 3302	/* Send ADD_STA command to enable aggs only if the queue isn't shared */3303	if (queue_status != IWL_MVM_QUEUE_SHARED) {3304		ret = iwl_mvm_sta_tx_agg(mvm, sta, tid, queue, true);3305		if (ret)3306			return -EIO;3307	}3308 3309	/* No need to mark as reserved */3310	mvm->queue_info[queue].status = IWL_MVM_QUEUE_READY;3311 3312out:3313	/*3314	 * Even though in theory the peer could have different3315	 * aggregation reorder buffer sizes for different sessions,3316	 * our ucode doesn't allow for that and has a global limit3317	 * for each station. Therefore, use the minimum of all the3318	 * aggregation sessions and our default value.3319	 */3320	mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize =3321		min(mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize,3322		    buf_size);3323	mvmsta->deflink.lq_sta.rs_drv.lq.agg_frame_cnt_limit =3324		mvmsta->deflink.lq_sta.rs_drv.pers.max_agg_bufsize;3325 3326	IWL_DEBUG_HT(mvm, "Tx aggregation enabled on ra = %pM tid = %d\n",3327		     sta->addr, tid);3328 3329	return iwl_mvm_send_lq_cmd(mvm, &mvmsta->deflink.lq_sta.rs_drv.lq);3330}3331 3332static void iwl_mvm_unreserve_agg_queue(struct iwl_mvm *mvm,3333					struct iwl_mvm_sta *mvmsta,3334					struct iwl_mvm_tid_data *tid_data)3335{3336	u16 txq_id = tid_data->txq_id;3337 3338	lockdep_assert_held(&mvm->mutex);3339 3340	if (iwl_mvm_has_new_tx_api(mvm))3341		return;3342 3343	/*3344	 * The TXQ is marked as reserved only if no traffic came through yet3345	 * This means no traffic has been sent on this TID (agg'd or not), so3346	 * we no longer have use for the queue. Since it hasn't even been3347	 * allocated through iwl_mvm_enable_txq, so we can just mark it back as3348	 * free.3349	 */3350	if (mvm->queue_info[txq_id].status == IWL_MVM_QUEUE_RESERVED) {3351		mvm->queue_info[txq_id].status = IWL_MVM_QUEUE_FREE;3352		tid_data->txq_id = IWL_MVM_INVALID_QUEUE;3353	}3354}3355 3356int iwl_mvm_sta_tx_agg_stop(struct iwl_mvm *mvm, struct ieee80211_vif *vif,3357			    struct ieee80211_sta *sta, u16 tid)3358{3359	struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);3360	struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];3361	u16 txq_id;3362	int err;3363 3364	/*3365	 * If mac80211 is cleaning its state, then say that we finished since3366	 * our state has been cleared anyway.3367	 */3368	if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {3369		ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);3370		return 0;3371	}3372 3373	spin_lock_bh(&mvmsta->lock);3374 3375	txq_id = tid_data->txq_id;3376 3377	IWL_DEBUG_TX_QUEUES(mvm, "Stop AGG: sta %d tid %d q %d state %d\n",3378			    mvmsta->deflink.sta_id, tid, txq_id,3379			    tid_data->state);3380 3381	mvmsta->agg_tids &= ~BIT(tid);3382 3383	iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data);3384 3385	switch (tid_data->state) {3386	case IWL_AGG_ON:3387		tid_data->ssn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);3388 3389		IWL_DEBUG_TX_QUEUES(mvm,3390				    "ssn = %d, next_recl = %d\n",3391				    tid_data->ssn, tid_data->next_reclaimed);3392 3393		tid_data->ssn = 0xffff;3394		tid_data->state = IWL_AGG_OFF;3395		spin_unlock_bh(&mvmsta->lock);3396 3397		ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);3398 3399		iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false);3400		return 0;3401	case IWL_AGG_STARTING:3402	case IWL_EMPTYING_HW_QUEUE_ADDBA:3403		/*3404		 * The agg session has been stopped before it was set up. This3405		 * can happen when the AddBA timer times out for example.3406		 */3407 3408		/* No barriers since we are under mutex */3409		lockdep_assert_held(&mvm->mutex);3410 3411		ieee80211_stop_tx_ba_cb_irqsafe(vif, sta->addr, tid);3412		tid_data->state = IWL_AGG_OFF;3413		err = 0;3414		break;3415	default:3416		IWL_ERR(mvm,3417			"Stopping AGG while state not ON or starting for %d on %d (%d)\n",3418			mvmsta->deflink.sta_id, tid, tid_data->state);3419		IWL_ERR(mvm,3420			"\ttid_data->txq_id = %d\n", tid_data->txq_id);3421		err = -EINVAL;3422	}3423 3424	spin_unlock_bh(&mvmsta->lock);3425 3426	return err;3427}3428 3429int iwl_mvm_sta_tx_agg_flush(struct iwl_mvm *mvm, struct ieee80211_vif *vif,3430			    struct ieee80211_sta *sta, u16 tid)3431{3432	struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);3433	struct iwl_mvm_tid_data *tid_data = &mvmsta->tid_data[tid];3434	u16 txq_id;3435	enum iwl_mvm_agg_state old_state;3436 3437	/*3438	 * First set the agg state to OFF to avoid calling3439	 * ieee80211_stop_tx_ba_cb in iwl_mvm_check_ratid_empty.3440	 */3441	spin_lock_bh(&mvmsta->lock);3442	txq_id = tid_data->txq_id;3443	IWL_DEBUG_TX_QUEUES(mvm, "Flush AGG: sta %d tid %d q %d state %d\n",3444			    mvmsta->deflink.sta_id, tid, txq_id,3445			    tid_data->state);3446	old_state = tid_data->state;3447	tid_data->state = IWL_AGG_OFF;3448	mvmsta->agg_tids &= ~BIT(tid);3449	spin_unlock_bh(&mvmsta->lock);3450 3451	iwl_mvm_unreserve_agg_queue(mvm, mvmsta, tid_data);3452 3453	if (old_state >= IWL_AGG_ON) {3454		iwl_mvm_drain_sta(mvm, mvmsta, true);3455 3456		if (iwl_mvm_has_new_tx_api(mvm)) {3457			if (iwl_mvm_flush_sta_tids(mvm, mvmsta->deflink.sta_id,3458						   BIT(tid)))3459				IWL_ERR(mvm, "Couldn't flush the AGG queue\n");3460			iwl_trans_wait_txq_empty(mvm->trans, txq_id);3461		} else {3462			if (iwl_mvm_flush_tx_path(mvm, BIT(txq_id)))3463				IWL_ERR(mvm, "Couldn't flush the AGG queue\n");3464			iwl_trans_wait_tx_queues_empty(mvm->trans, BIT(txq_id));3465		}3466 3467		iwl_mvm_drain_sta(mvm, mvmsta, false);3468 3469		iwl_mvm_sta_tx_agg(mvm, sta, tid, txq_id, false);3470	}3471 3472	return 0;3473}3474 3475static int iwl_mvm_set_fw_key_idx(struct iwl_mvm *mvm)3476{3477	int i, max = -1, max_offs = -1;3478 3479	lockdep_assert_held(&mvm->mutex);3480 3481	/* Pick the unused key offset with the highest 'deleted'3482	 * counter. Every time a key is deleted, all the counters3483	 * are incremented and the one that was just deleted is3484	 * reset to zero. Thus, the highest counter is the one3485	 * that was deleted longest ago. Pick that one.3486	 */3487	for (i = 0; i < STA_KEY_MAX_NUM; i++) {3488		if (test_bit(i, mvm->fw_key_table))3489			continue;3490		if (mvm->fw_key_deleted[i] > max) {3491			max = mvm->fw_key_deleted[i];3492			max_offs = i;3493		}3494	}3495 3496	if (max_offs < 0)3497		return STA_KEY_IDX_INVALID;3498 3499	return max_offs;3500}3501 3502static struct iwl_mvm_sta *iwl_mvm_get_key_sta(struct iwl_mvm *mvm,3503					       struct ieee80211_vif *vif,3504					       struct ieee80211_sta *sta)3505{3506	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);3507 3508	if (sta)3509		return iwl_mvm_sta_from_mac80211(sta);3510 3511	/*3512	 * The device expects GTKs for station interfaces to be3513	 * installed as GTKs for the AP station. If we have no3514	 * station ID, then use AP's station ID.3515	 */3516	if (vif->type == NL80211_IFTYPE_STATION &&3517	    mvmvif->deflink.ap_sta_id != IWL_MVM_INVALID_STA) {3518		u8 sta_id = mvmvif->deflink.ap_sta_id;3519 3520		sta = rcu_dereference_check(mvm->fw_id_to_mac_id[sta_id],3521					    lockdep_is_held(&mvm->mutex));3522 3523		/*3524		 * It is possible that the 'sta' parameter is NULL,3525		 * for example when a GTK is removed - the sta_id will then3526		 * be the AP ID, and no station was passed by mac80211.3527		 */3528		if (IS_ERR_OR_NULL(sta))3529			return NULL;3530 3531		return iwl_mvm_sta_from_mac80211(sta);3532	}3533 3534	return NULL;3535}3536 3537static int iwl_mvm_pn_cmp(const u8 *pn1, const u8 *pn2, int len)3538{3539	int i;3540 3541	for (i = len - 1; i >= 0; i--) {3542		if (pn1[i] > pn2[i])3543			return 1;3544		if (pn1[i] < pn2[i])3545			return -1;3546	}3547 3548	return 0;3549}3550 3551static int iwl_mvm_send_sta_key(struct iwl_mvm *mvm,3552				u32 sta_id,3553				struct ieee80211_key_conf *key, bool mcast,3554				u32 tkip_iv32, u16 *tkip_p1k, u32 cmd_flags,3555				u8 key_offset, bool mfp)3556{3557	union {3558		struct iwl_mvm_add_sta_key_cmd_v1 cmd_v1;3559		struct iwl_mvm_add_sta_key_cmd cmd;3560	} u = {};3561	__le16 key_flags;3562	int ret;3563	u32 status;3564	u16 keyidx;3565	u64 pn = 0;3566	int i, size;3567	bool new_api = fw_has_api(&mvm->fw->ucode_capa,3568				  IWL_UCODE_TLV_API_TKIP_MIC_KEYS);3569	int api_ver = iwl_fw_lookup_cmd_ver(mvm->fw, ADD_STA_KEY,3570					    new_api ? 2 : 1);3571 3572	if (sta_id == IWL_MVM_INVALID_STA)3573		return -EINVAL;3574 3575	keyidx = (key->keyidx << STA_KEY_FLG_KEYID_POS) &3576		 STA_KEY_FLG_KEYID_MSK;3577	key_flags = cpu_to_le16(keyidx);3578	key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_KEY_MAP);3579 3580	if (key->flags & IEEE80211_KEY_FLAG_SPP_AMSDU)3581		key_flags |= cpu_to_le16(STA_KEY_FLG_AMSDU_SPP);3582 3583	switch (key->cipher) {3584	case WLAN_CIPHER_SUITE_TKIP:3585		key_flags |= cpu_to_le16(STA_KEY_FLG_TKIP);3586		if (api_ver >= 2) {3587			memcpy((void *)&u.cmd.tx_mic_key,3588			       &key->key[NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY],3589			       IWL_MIC_KEY_SIZE);3590 3591			memcpy((void *)&u.cmd.rx_mic_key,3592			       &key->key[NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY],3593			       IWL_MIC_KEY_SIZE);3594			pn = atomic64_read(&key->tx_pn);3595 3596		} else {3597			u.cmd_v1.tkip_rx_tsc_byte2 = tkip_iv32;3598			for (i = 0; i < 5; i++)3599				u.cmd_v1.tkip_rx_ttak[i] =3600					cpu_to_le16(tkip_p1k[i]);3601		}3602		memcpy(u.cmd.common.key, key->key, key->keylen);3603		break;3604	case WLAN_CIPHER_SUITE_CCMP:3605		key_flags |= cpu_to_le16(STA_KEY_FLG_CCM);3606		memcpy(u.cmd.common.key, key->key, key->keylen);3607		if (api_ver >= 2)3608			pn = atomic64_read(&key->tx_pn);3609		break;3610	case WLAN_CIPHER_SUITE_WEP104:3611		key_flags |= cpu_to_le16(STA_KEY_FLG_WEP_13BYTES);3612		fallthrough;3613	case WLAN_CIPHER_SUITE_WEP40:3614		key_flags |= cpu_to_le16(STA_KEY_FLG_WEP);3615		memcpy(u.cmd.common.key + 3, key->key, key->keylen);3616		break;3617	case WLAN_CIPHER_SUITE_GCMP_256:3618		key_flags |= cpu_to_le16(STA_KEY_FLG_KEY_32BYTES);3619		fallthrough;3620	case WLAN_CIPHER_SUITE_GCMP:3621		key_flags |= cpu_to_le16(STA_KEY_FLG_GCMP);3622		memcpy(u.cmd.common.key, key->key, key->keylen);3623		if (api_ver >= 2)3624			pn = atomic64_read(&key->tx_pn);3625		break;3626	default:3627		key_flags |= cpu_to_le16(STA_KEY_FLG_EXT);3628		memcpy(u.cmd.common.key, key->key, key->keylen);3629	}3630 3631	if (mcast)3632		key_flags |= cpu_to_le16(STA_KEY_MULTICAST);3633	if (mfp)3634		key_flags |= cpu_to_le16(STA_KEY_MFP);3635 3636	u.cmd.common.key_offset = key_offset;3637	u.cmd.common.key_flags = key_flags;3638	u.cmd.common.sta_id = sta_id;3639 3640	if (key->cipher == WLAN_CIPHER_SUITE_TKIP)3641		i = 0;3642	else3643		i = -1;3644 3645	for (; i < IEEE80211_NUM_TIDS; i++) {3646		struct ieee80211_key_seq seq = {};3647		u8 _rx_pn[IEEE80211_MAX_PN_LEN] = {}, *rx_pn = _rx_pn;3648		int rx_pn_len = 8;3649		/* there's a hole at 2/3 in FW format depending on version */3650		int hole = api_ver >= 3 ? 0 : 2;3651 3652		ieee80211_get_key_rx_seq(key, i, &seq);3653 3654		if (key->cipher == WLAN_CIPHER_SUITE_TKIP) {3655			rx_pn[0] = seq.tkip.iv16;3656			rx_pn[1] = seq.tkip.iv16 >> 8;3657			rx_pn[2 + hole] = seq.tkip.iv32;3658			rx_pn[3 + hole] = seq.tkip.iv32 >> 8;3659			rx_pn[4 + hole] = seq.tkip.iv32 >> 16;3660			rx_pn[5 + hole] = seq.tkip.iv32 >> 24;3661		} else if (key_flags & cpu_to_le16(STA_KEY_FLG_EXT)) {3662			rx_pn = seq.hw.seq;3663			rx_pn_len = seq.hw.seq_len;3664		} else {3665			rx_pn[0] = seq.ccmp.pn[0];3666			rx_pn[1] = seq.ccmp.pn[1];3667			rx_pn[2 + hole] = seq.ccmp.pn[2];3668			rx_pn[3 + hole] = seq.ccmp.pn[3];3669			rx_pn[4 + hole] = seq.ccmp.pn[4];3670			rx_pn[5 + hole] = seq.ccmp.pn[5];3671		}3672 3673		if (iwl_mvm_pn_cmp(rx_pn, (u8 *)&u.cmd.common.rx_secur_seq_cnt,3674				   rx_pn_len) > 0)3675			memcpy(&u.cmd.common.rx_secur_seq_cnt, rx_pn,3676			       rx_pn_len);3677	}3678 3679	if (api_ver >= 2) {3680		u.cmd.transmit_seq_cnt = cpu_to_le64(pn);3681		size = sizeof(u.cmd);3682	} else {3683		size = sizeof(u.cmd_v1);3684	}3685 3686	status = ADD_STA_SUCCESS;3687	if (cmd_flags & CMD_ASYNC)3688		ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA_KEY, CMD_ASYNC, size,3689					   &u.cmd);3690	else3691		ret = iwl_mvm_send_cmd_pdu_status(mvm, ADD_STA_KEY, size,3692						  &u.cmd, &status);3693 3694	switch (status) {3695	case ADD_STA_SUCCESS:3696		IWL_DEBUG_WEP(mvm, "MODIFY_STA: set dynamic key passed\n");3697		break;3698	default:3699		ret = -EIO;3700		IWL_ERR(mvm, "MODIFY_STA: set dynamic key failed\n");3701		break;3702	}3703 3704	return ret;3705}3706 3707static int iwl_mvm_send_sta_igtk(struct iwl_mvm *mvm,3708				 struct ieee80211_key_conf *keyconf,3709				 u8 sta_id, bool remove_key)3710{3711	struct iwl_mvm_mgmt_mcast_key_cmd igtk_cmd = {};3712 3713	/* verify the key details match the required command's expectations */3714	if (WARN_ON((keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) ||3715		    (keyconf->keyidx != 4 && keyconf->keyidx != 5 &&3716		     keyconf->keyidx != 6 && keyconf->keyidx != 7) ||3717		    (keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC &&3718		     keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_128 &&3719		     keyconf->cipher != WLAN_CIPHER_SUITE_BIP_GMAC_256)))3720		return -EINVAL;3721 3722	if (WARN_ON(!iwl_mvm_has_new_rx_api(mvm) &&3723		    keyconf->cipher != WLAN_CIPHER_SUITE_AES_CMAC))3724		return -EINVAL;3725 3726	igtk_cmd.key_id = cpu_to_le32(keyconf->keyidx);3727	igtk_cmd.sta_id = cpu_to_le32(sta_id);3728 3729	if (remove_key) {3730		/* This is a valid situation for IGTK */3731		if (sta_id == IWL_MVM_INVALID_STA)3732			return 0;3733 3734		igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_NOT_VALID);3735	} else {3736		struct ieee80211_key_seq seq;3737		const u8 *pn;3738 3739		switch (keyconf->cipher) {3740		case WLAN_CIPHER_SUITE_AES_CMAC:3741			igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_CCM);3742			break;3743		case WLAN_CIPHER_SUITE_BIP_GMAC_128:3744		case WLAN_CIPHER_SUITE_BIP_GMAC_256:3745			igtk_cmd.ctrl_flags |= cpu_to_le32(STA_KEY_FLG_GCMP);3746			break;3747		default:3748			return -EINVAL;3749		}3750 3751		memcpy(igtk_cmd.igtk, keyconf->key, keyconf->keylen);3752		if (keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)3753			igtk_cmd.ctrl_flags |=3754				cpu_to_le32(STA_KEY_FLG_KEY_32BYTES);3755		ieee80211_get_key_rx_seq(keyconf, 0, &seq);3756		pn = seq.aes_cmac.pn;3757		igtk_cmd.receive_seq_cnt = cpu_to_le64(((u64) pn[5] << 0) |3758						       ((u64) pn[4] << 8) |3759						       ((u64) pn[3] << 16) |3760						       ((u64) pn[2] << 24) |3761						       ((u64) pn[1] << 32) |3762						       ((u64) pn[0] << 40));3763	}3764 3765	IWL_DEBUG_INFO(mvm, "%s %sIGTK (%d) for sta %u\n",3766		       remove_key ? "removing" : "installing",3767		       keyconf->keyidx >= 6 ? "B" : "",3768		       keyconf->keyidx, igtk_cmd.sta_id);3769 3770	if (!iwl_mvm_has_new_rx_api(mvm)) {3771		struct iwl_mvm_mgmt_mcast_key_cmd_v1 igtk_cmd_v1 = {3772			.ctrl_flags = igtk_cmd.ctrl_flags,3773			.key_id = igtk_cmd.key_id,3774			.sta_id = igtk_cmd.sta_id,3775			.receive_seq_cnt = igtk_cmd.receive_seq_cnt3776		};3777 3778		memcpy(igtk_cmd_v1.igtk, igtk_cmd.igtk,3779		       ARRAY_SIZE(igtk_cmd_v1.igtk));3780		return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0,3781					    sizeof(igtk_cmd_v1), &igtk_cmd_v1);3782	}3783	return iwl_mvm_send_cmd_pdu(mvm, MGMT_MCAST_KEY, 0,3784				    sizeof(igtk_cmd), &igtk_cmd);3785}3786 3787 3788static inline u8 *iwl_mvm_get_mac_addr(struct iwl_mvm *mvm,3789				       struct ieee80211_vif *vif,3790				       struct ieee80211_sta *sta)3791{3792	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);3793 3794	if (sta)3795		return sta->addr;3796 3797	if (vif->type == NL80211_IFTYPE_STATION &&3798	    mvmvif->deflink.ap_sta_id != IWL_MVM_INVALID_STA) {3799		u8 sta_id = mvmvif->deflink.ap_sta_id;3800		sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[sta_id],3801						lockdep_is_held(&mvm->mutex));3802		if (WARN_ON_ONCE(IS_ERR_OR_NULL(sta)))3803			return NULL;3804 3805		return sta->addr;3806	}3807 3808 3809	return NULL;3810}3811 3812static int __iwl_mvm_set_sta_key(struct iwl_mvm *mvm,3813				 struct ieee80211_vif *vif,3814				 struct ieee80211_sta *sta,3815				 struct ieee80211_key_conf *keyconf,3816				 u8 key_offset,3817				 bool mcast)3818{3819	const u8 *addr;3820	struct ieee80211_key_seq seq;3821	u16 p1k[5];3822	u32 sta_id;3823	bool mfp = false;3824 3825	if (sta) {3826		struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);3827 3828		sta_id = mvm_sta->deflink.sta_id;3829		mfp = sta->mfp;3830	} else if (vif->type == NL80211_IFTYPE_AP &&3831		   !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE)) {3832		struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);3833 3834		sta_id = mvmvif->deflink.mcast_sta.sta_id;3835	} else {3836		IWL_ERR(mvm, "Failed to find station id\n");3837		return -EINVAL;3838	}3839 3840	if (keyconf->cipher == WLAN_CIPHER_SUITE_TKIP) {3841		addr = iwl_mvm_get_mac_addr(mvm, vif, sta);3842		if (!addr) {3843			IWL_ERR(mvm, "Failed to find mac address\n");3844			return -EINVAL;3845		}3846 3847		/* get phase 1 key from mac80211 */3848		ieee80211_get_key_rx_seq(keyconf, 0, &seq);3849		ieee80211_get_tkip_rx_p1k(keyconf, addr, seq.tkip.iv32, p1k);3850 3851		return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast,3852					    seq.tkip.iv32, p1k, 0, key_offset,3853					    mfp);3854	}3855 3856	return iwl_mvm_send_sta_key(mvm, sta_id, keyconf, mcast,3857				    0, NULL, 0, key_offset, mfp);3858}3859 3860int iwl_mvm_set_sta_key(struct iwl_mvm *mvm,3861			struct ieee80211_vif *vif,3862			struct ieee80211_sta *sta,3863			struct ieee80211_key_conf *keyconf,3864			u8 key_offset)3865{3866	bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);3867	struct iwl_mvm_sta *mvm_sta;3868	u8 sta_id = IWL_MVM_INVALID_STA;3869	int ret;3870	static const u8 __maybe_unused zero_addr[ETH_ALEN] = {0};3871 3872	lockdep_assert_held(&mvm->mutex);3873 3874	if (vif->type != NL80211_IFTYPE_AP ||3875	    keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE) {3876		/* Get the station id from the mvm local station table */3877		mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta);3878		if (!mvm_sta) {3879			IWL_ERR(mvm, "Failed to find station\n");3880			return -EINVAL;3881		}3882		sta_id = mvm_sta->deflink.sta_id;3883 3884		/*3885		 * It is possible that the 'sta' parameter is NULL, and thus3886		 * there is a need to retrieve the sta from the local station3887		 * table.3888		 */3889		if (!sta) {3890			sta = rcu_dereference_protected(3891				mvm->fw_id_to_mac_id[sta_id],3892				lockdep_is_held(&mvm->mutex));3893			if (IS_ERR_OR_NULL(sta)) {3894				IWL_ERR(mvm, "Invalid station id\n");3895				return -EINVAL;3896			}3897		}3898 3899		if (WARN_ON_ONCE(iwl_mvm_sta_from_mac80211(sta)->vif != vif))3900			return -EINVAL;3901	} else {3902		struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);3903 3904		sta_id = mvmvif->deflink.mcast_sta.sta_id;3905	}3906 3907	if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||3908	    keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||3909	    keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256) {3910		ret = iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, false);3911		goto end;3912	}3913 3914	/* If the key_offset is not pre-assigned, we need to find a3915	 * new offset to use.  In normal cases, the offset is not3916	 * pre-assigned, but during HW_RESTART we want to reuse the3917	 * same indices, so we pass them when this function is called.3918	 *3919	 * In D3 entry, we need to hardcoded the indices (because the3920	 * firmware hardcodes the PTK offset to 0).  In this case, we3921	 * need to make sure we don't overwrite the hw_key_idx in the3922	 * keyconf structure, because otherwise we cannot configure3923	 * the original ones back when resuming.3924	 */3925	if (key_offset == STA_KEY_IDX_INVALID) {3926		key_offset  = iwl_mvm_set_fw_key_idx(mvm);3927		if (key_offset == STA_KEY_IDX_INVALID)3928			return -ENOSPC;3929		keyconf->hw_key_idx = key_offset;3930	}3931 3932	ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf, key_offset, mcast);3933	if (ret)3934		goto end;3935 3936	/*3937	 * For WEP, the same key is used for multicast and unicast. Upload it3938	 * again, using the same key offset, and now pointing the other one3939	 * to the same key slot (offset).3940	 * If this fails, remove the original as well.3941	 */3942	if ((keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 ||3943	     keyconf->cipher == WLAN_CIPHER_SUITE_WEP104) &&3944	    sta) {3945		ret = __iwl_mvm_set_sta_key(mvm, vif, sta, keyconf,3946					    key_offset, !mcast);3947		if (ret) {3948			__iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast);3949			goto end;3950		}3951	}3952 3953	__set_bit(key_offset, mvm->fw_key_table);3954 3955end:3956	IWL_DEBUG_WEP(mvm, "key: cipher=%x len=%d idx=%d sta=%pM ret=%d\n",3957		      keyconf->cipher, keyconf->keylen, keyconf->keyidx,3958		      sta ? sta->addr : zero_addr, ret);3959	return ret;3960}3961 3962int iwl_mvm_remove_sta_key(struct iwl_mvm *mvm,3963			   struct ieee80211_vif *vif,3964			   struct ieee80211_sta *sta,3965			   struct ieee80211_key_conf *keyconf)3966{3967	bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);3968	struct iwl_mvm_sta *mvm_sta;3969	u8 sta_id = IWL_MVM_INVALID_STA;3970	int ret, i;3971 3972	lockdep_assert_held(&mvm->mutex);3973 3974	/* Get the station from the mvm local station table */3975	mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta);3976	if (mvm_sta)3977		sta_id = mvm_sta->deflink.sta_id;3978	else if (!sta && vif->type == NL80211_IFTYPE_AP && mcast)3979		sta_id = iwl_mvm_vif_from_mac80211(vif)->deflink.mcast_sta.sta_id;3980 3981 3982	IWL_DEBUG_WEP(mvm, "mvm remove dynamic key: idx=%d sta=%d\n",3983		      keyconf->keyidx, sta_id);3984 3985	if (keyconf->cipher == WLAN_CIPHER_SUITE_AES_CMAC ||3986	    keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_128 ||3987	    keyconf->cipher == WLAN_CIPHER_SUITE_BIP_GMAC_256)3988		return iwl_mvm_send_sta_igtk(mvm, keyconf, sta_id, true);3989 3990	if (!__test_and_clear_bit(keyconf->hw_key_idx, mvm->fw_key_table)) {3991		IWL_ERR(mvm, "offset %d not used in fw key table.\n",3992			keyconf->hw_key_idx);3993		return -ENOENT;3994	}3995 3996	/* track which key was deleted last */3997	for (i = 0; i < STA_KEY_MAX_NUM; i++) {3998		if (mvm->fw_key_deleted[i] < U8_MAX)3999			mvm->fw_key_deleted[i]++;4000	}4001	mvm->fw_key_deleted[keyconf->hw_key_idx] = 0;4002 4003	if (sta && !mvm_sta) {4004		IWL_DEBUG_WEP(mvm, "station non-existent, early return.\n");4005		return 0;4006	}4007 4008	ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, mcast);4009	if (ret)4010		return ret;4011 4012	/* delete WEP key twice to get rid of (now useless) offset */4013	if (keyconf->cipher == WLAN_CIPHER_SUITE_WEP40 ||4014	    keyconf->cipher == WLAN_CIPHER_SUITE_WEP104)4015		ret = __iwl_mvm_remove_sta_key(mvm, sta_id, keyconf, !mcast);4016 4017	return ret;4018}4019 4020void iwl_mvm_update_tkip_key(struct iwl_mvm *mvm,4021			     struct ieee80211_vif *vif,4022			     struct ieee80211_key_conf *keyconf,4023			     struct ieee80211_sta *sta, u32 iv32,4024			     u16 *phase1key)4025{4026	struct iwl_mvm_sta *mvm_sta;4027	bool mcast = !(keyconf->flags & IEEE80211_KEY_FLAG_PAIRWISE);4028	bool mfp = sta ? sta->mfp : false;4029 4030	rcu_read_lock();4031 4032	mvm_sta = iwl_mvm_get_key_sta(mvm, vif, sta);4033	if (WARN_ON_ONCE(!mvm_sta))4034		goto unlock;4035	iwl_mvm_send_sta_key(mvm, mvm_sta->deflink.sta_id, keyconf, mcast,4036			     iv32, phase1key, CMD_ASYNC, keyconf->hw_key_idx,4037			     mfp);4038 4039 unlock:4040	rcu_read_unlock();4041}4042 4043void iwl_mvm_sta_modify_ps_wake(struct iwl_mvm *mvm,4044				struct ieee80211_sta *sta)4045{4046	struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);4047	struct iwl_mvm_add_sta_cmd cmd = {4048		.add_modify = STA_MODE_MODIFY,4049		.sta_id = mvmsta->deflink.sta_id,4050		.station_flags_msk = cpu_to_le32(STA_FLG_PS),4051		.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),4052	};4053	int ret;4054 4055	ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,4056				   iwl_mvm_add_sta_cmd_size(mvm), &cmd);4057	if (ret)4058		IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);4059}4060 4061void iwl_mvm_sta_modify_sleep_tx_count(struct iwl_mvm *mvm,4062				       struct ieee80211_sta *sta,4063				       enum ieee80211_frame_release_type reason,4064				       u16 cnt, u16 tids, bool more_data,4065				       bool single_sta_queue)4066{4067	struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);4068	struct iwl_mvm_add_sta_cmd cmd = {4069		.add_modify = STA_MODE_MODIFY,4070		.sta_id = mvmsta->deflink.sta_id,4071		.modify_mask = STA_MODIFY_SLEEPING_STA_TX_COUNT,4072		.sleep_tx_count = cpu_to_le16(cnt),4073		.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),4074	};4075	int tid, ret;4076	unsigned long _tids = tids;4077 4078	/* convert TIDs to ACs - we don't support TSPEC so that's OK4079	 * Note that this field is reserved and unused by firmware not4080	 * supporting GO uAPSD, so it's safe to always do this.4081	 */4082	for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT)4083		cmd.awake_acs |= BIT(tid_to_ucode_ac[tid]);4084 4085	/* If we're releasing frames from aggregation or dqa queues then check4086	 * if all the queues that we're releasing frames from, combined, have:4087	 *  - more frames than the service period, in which case more_data4088	 *    needs to be set4089	 *  - fewer than 'cnt' frames, in which case we need to adjust the4090	 *    firmware command (but do that unconditionally)4091	 */4092	if (single_sta_queue) {4093		int remaining = cnt;4094		int sleep_tx_count;4095 4096		spin_lock_bh(&mvmsta->lock);4097		for_each_set_bit(tid, &_tids, IWL_MAX_TID_COUNT) {4098			struct iwl_mvm_tid_data *tid_data;4099			u16 n_queued;4100 4101			tid_data = &mvmsta->tid_data[tid];4102 4103			n_queued = iwl_mvm_tid_queued(mvm, tid_data);4104			if (n_queued > remaining) {4105				more_data = true;4106				remaining = 0;4107				break;4108			}4109			remaining -= n_queued;4110		}4111		sleep_tx_count = cnt - remaining;4112		if (reason == IEEE80211_FRAME_RELEASE_UAPSD)4113			mvmsta->sleep_tx_count = sleep_tx_count;4114		spin_unlock_bh(&mvmsta->lock);4115 4116		cmd.sleep_tx_count = cpu_to_le16(sleep_tx_count);4117		if (WARN_ON(cnt - remaining == 0)) {4118			ieee80211_sta_eosp(sta);4119			return;4120		}4121	}4122 4123	/* Note: this is ignored by firmware not supporting GO uAPSD */4124	if (more_data)4125		cmd.sleep_state_flags |= STA_SLEEP_STATE_MOREDATA;4126 4127	if (reason == IEEE80211_FRAME_RELEASE_PSPOLL) {4128		mvmsta->next_status_eosp = true;4129		cmd.sleep_state_flags |= STA_SLEEP_STATE_PS_POLL;4130	} else {4131		cmd.sleep_state_flags |= STA_SLEEP_STATE_UAPSD;4132	}4133 4134	/* block the Tx queues until the FW updated the sleep Tx count */4135	ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA,4136				   CMD_ASYNC | CMD_BLOCK_TXQS,4137				   iwl_mvm_add_sta_cmd_size(mvm), &cmd);4138	if (ret)4139		IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);4140}4141 4142void iwl_mvm_rx_eosp_notif(struct iwl_mvm *mvm,4143			   struct iwl_rx_cmd_buffer *rxb)4144{4145	struct iwl_rx_packet *pkt = rxb_addr(rxb);4146	struct iwl_mvm_eosp_notification *notif = (void *)pkt->data;4147	struct ieee80211_sta *sta;4148	u32 sta_id = le32_to_cpu(notif->sta_id);4149 4150	if (WARN_ON_ONCE(sta_id >= mvm->fw->ucode_capa.num_stations))4151		return;4152 4153	rcu_read_lock();4154	sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);4155	if (!IS_ERR_OR_NULL(sta))4156		ieee80211_sta_eosp(sta);4157	rcu_read_unlock();4158}4159 4160void iwl_mvm_sta_modify_disable_tx(struct iwl_mvm *mvm,4161				   struct iwl_mvm_sta *mvmsta,4162				   bool disable)4163{4164	struct iwl_mvm_add_sta_cmd cmd = {4165		.add_modify = STA_MODE_MODIFY,4166		.sta_id = mvmsta->deflink.sta_id,4167		.station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0,4168		.station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX),4169		.mac_id_n_color = cpu_to_le32(mvmsta->mac_id_n_color),4170	};4171	int ret;4172 4173	if (mvm->mld_api_is_used) {4174		if (!iwl_mvm_has_no_host_disable_tx(mvm))4175			iwl_mvm_mld_sta_modify_disable_tx(mvm, mvmsta, disable);4176		return;4177	}4178 4179	ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,4180				   iwl_mvm_add_sta_cmd_size(mvm), &cmd);4181	if (ret)4182		IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);4183}4184 4185void iwl_mvm_sta_modify_disable_tx_ap(struct iwl_mvm *mvm,4186				      struct ieee80211_sta *sta,4187				      bool disable)4188{4189	struct iwl_mvm_sta *mvm_sta = iwl_mvm_sta_from_mac80211(sta);4190 4191	if (mvm->mld_api_is_used) {4192		if (!iwl_mvm_has_no_host_disable_tx(mvm))4193			iwl_mvm_mld_sta_modify_disable_tx_ap(mvm, sta, disable);4194		return;4195	}4196 4197	spin_lock_bh(&mvm_sta->lock);4198 4199	if (mvm_sta->disable_tx == disable) {4200		spin_unlock_bh(&mvm_sta->lock);4201		return;4202	}4203 4204	mvm_sta->disable_tx = disable;4205 4206	/*4207	 * If sta PS state is handled by mac80211, tell it to start/stop4208	 * queuing tx for this station.4209	 */4210	if (!ieee80211_hw_check(mvm->hw, AP_LINK_PS))4211		ieee80211_sta_block_awake(mvm->hw, sta, disable);4212 4213	iwl_mvm_sta_modify_disable_tx(mvm, mvm_sta, disable);4214 4215	spin_unlock_bh(&mvm_sta->lock);4216}4217 4218static void iwl_mvm_int_sta_modify_disable_tx(struct iwl_mvm *mvm,4219					      struct iwl_mvm_vif *mvmvif,4220					      struct iwl_mvm_int_sta *sta,4221					      bool disable)4222{4223	u32 id = FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color);4224	struct iwl_mvm_add_sta_cmd cmd = {4225		.add_modify = STA_MODE_MODIFY,4226		.sta_id = sta->sta_id,4227		.station_flags = disable ? cpu_to_le32(STA_FLG_DISABLE_TX) : 0,4228		.station_flags_msk = cpu_to_le32(STA_FLG_DISABLE_TX),4229		.mac_id_n_color = cpu_to_le32(id),4230	};4231	int ret;4232 4233	ret = iwl_mvm_send_cmd_pdu(mvm, ADD_STA, CMD_ASYNC,4234				   iwl_mvm_add_sta_cmd_size(mvm), &cmd);4235	if (ret)4236		IWL_ERR(mvm, "Failed to send ADD_STA command (%d)\n", ret);4237}4238 4239void iwl_mvm_modify_all_sta_disable_tx(struct iwl_mvm *mvm,4240				       struct iwl_mvm_vif *mvmvif,4241				       bool disable)4242{4243	struct ieee80211_sta *sta;4244	struct iwl_mvm_sta *mvm_sta;4245	int i;4246 4247	if (mvm->mld_api_is_used) {4248		if (!iwl_mvm_has_no_host_disable_tx(mvm))4249			iwl_mvm_mld_modify_all_sta_disable_tx(mvm, mvmvif,4250							      disable);4251		return;4252	}4253 4254	rcu_read_lock();4255 4256	/* Block/unblock all the stations of the given mvmvif */4257	for (i = 0; i < mvm->fw->ucode_capa.num_stations; i++) {4258		sta = rcu_dereference(mvm->fw_id_to_mac_id[i]);4259		if (IS_ERR_OR_NULL(sta))4260			continue;4261 4262		mvm_sta = iwl_mvm_sta_from_mac80211(sta);4263		if (mvm_sta->mac_id_n_color !=4264		    FW_CMD_ID_AND_COLOR(mvmvif->id, mvmvif->color))4265			continue;4266 4267		iwl_mvm_sta_modify_disable_tx_ap(mvm, sta, disable);4268	}4269 4270	rcu_read_unlock();4271 4272	if (!fw_has_api(&mvm->fw->ucode_capa, IWL_UCODE_TLV_API_STA_TYPE))4273		return;4274 4275	/* Need to block/unblock also multicast station */4276	if (mvmvif->deflink.mcast_sta.sta_id != IWL_MVM_INVALID_STA)4277		iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif,4278						  &mvmvif->deflink.mcast_sta,4279						  disable);4280 4281	/*4282	 * Only unblock the broadcast station (FW blocks it for immediate4283	 * quiet, not the driver)4284	 */4285	if (!disable && mvmvif->deflink.bcast_sta.sta_id != IWL_MVM_INVALID_STA)4286		iwl_mvm_int_sta_modify_disable_tx(mvm, mvmvif,4287						  &mvmvif->deflink.bcast_sta,4288						  disable);4289}4290 4291void iwl_mvm_csa_client_absent(struct iwl_mvm *mvm, struct ieee80211_vif *vif)4292{4293	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);4294	struct iwl_mvm_sta *mvmsta;4295 4296	rcu_read_lock();4297 4298	mvmsta = iwl_mvm_sta_from_staid_rcu(mvm, mvmvif->deflink.ap_sta_id);4299 4300	if (mvmsta)4301		iwl_mvm_sta_modify_disable_tx(mvm, mvmsta, true);4302 4303	rcu_read_unlock();4304}4305 4306u16 iwl_mvm_tid_queued(struct iwl_mvm *mvm, struct iwl_mvm_tid_data *tid_data)4307{4308	u16 sn = IEEE80211_SEQ_TO_SN(tid_data->seq_number);4309 4310	/*4311	 * In 22000 HW, the next_reclaimed index is only 8 bit, so we'll need4312	 * to align the wrap around of ssn so we compare relevant values.4313	 */4314	if (mvm->trans->trans_cfg->gen2)4315		sn &= 0xff;4316 4317	return ieee80211_sn_sub(sn, tid_data->next_reclaimed);4318}4319 4320int iwl_mvm_add_pasn_sta(struct iwl_mvm *mvm, struct ieee80211_vif *vif,4321			 struct iwl_mvm_int_sta *sta, u8 *addr, u32 cipher,4322			 u8 *key, u32 key_len,4323			 struct ieee80211_key_conf *keyconf)4324{4325	int ret;4326	u16 queue;4327	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);4328	unsigned int wdg_timeout =4329		iwl_mvm_get_wd_timeout(mvm, vif);4330	bool mld = iwl_mvm_has_mld_api(mvm->fw);4331	u32 type = mld ? STATION_TYPE_PEER : IWL_STA_LINK;4332 4333	ret = iwl_mvm_allocate_int_sta(mvm, sta, 0,4334				       NL80211_IFTYPE_UNSPECIFIED, type);4335	if (ret)4336		return ret;4337 4338	if (mld)4339		ret = iwl_mvm_mld_add_int_sta_with_queue(mvm, sta, addr,4340							 mvmvif->deflink.fw_link_id,4341							 &queue,4342							 IWL_MAX_TID_COUNT,4343							 &wdg_timeout);4344	else4345		ret = iwl_mvm_add_int_sta_with_queue(mvm, mvmvif->id,4346						     mvmvif->color, addr, sta,4347						     &queue,4348						     IWL_MVM_TX_FIFO_BE);4349	if (ret)4350		goto out;4351 4352	keyconf->cipher = cipher;4353	memcpy(keyconf->key, key, key_len);4354	keyconf->keylen = key_len;4355	keyconf->flags = IEEE80211_KEY_FLAG_PAIRWISE;4356 4357	if (mld) {4358		/* The MFP flag is set according to the station mfp field. Since4359		 * we don't have a station, set it manually.4360		 */4361		u32 key_flags =4362			iwl_mvm_get_sec_flags(mvm, vif, NULL, keyconf) |4363			IWL_SEC_KEY_FLAG_MFP;4364		u32 sta_mask = BIT(sta->sta_id);4365 4366		ret = iwl_mvm_mld_send_key(mvm, sta_mask, key_flags, keyconf);4367	} else {4368		ret = iwl_mvm_send_sta_key(mvm, sta->sta_id, keyconf, false,4369					   0, NULL, 0, 0, true);4370	}4371 4372out:4373	if (ret)4374		iwl_mvm_dealloc_int_sta(mvm, sta);4375	return ret;4376}4377 4378void iwl_mvm_cancel_channel_switch(struct iwl_mvm *mvm,4379				   struct ieee80211_vif *vif,4380				   u32 id)4381{4382	struct iwl_cancel_channel_switch_cmd cancel_channel_switch_cmd = {4383		.id = cpu_to_le32(id),4384	};4385	int ret;4386 4387	ret = iwl_mvm_send_cmd_pdu(mvm,4388				   WIDE_ID(MAC_CONF_GROUP, CANCEL_CHANNEL_SWITCH_CMD),4389				   CMD_ASYNC,4390				   sizeof(cancel_channel_switch_cmd),4391				   &cancel_channel_switch_cmd);4392	if (ret)4393		IWL_ERR(mvm, "Failed to cancel the channel switch\n");4394}4395 4396static int iwl_mvm_fw_sta_id_to_fw_link_id(struct iwl_mvm_vif *mvmvif,4397					   u8 fw_sta_id)4398{4399	struct ieee80211_link_sta *link_sta =4400		rcu_dereference(mvmvif->mvm->fw_id_to_link_sta[fw_sta_id]);4401	struct iwl_mvm_vif_link_info *link;4402 4403	if (WARN_ON_ONCE(!link_sta))4404		return -EINVAL;4405 4406	link = mvmvif->link[link_sta->link_id];4407 4408	if (WARN_ON_ONCE(!link))4409		return -EINVAL;4410 4411	return link->fw_link_id;4412}4413 4414#define IWL_MVM_TPT_COUNT_WINDOW (IWL_MVM_TPT_COUNT_WINDOW_SEC * HZ)4415 4416void iwl_mvm_count_mpdu(struct iwl_mvm_sta *mvm_sta, u8 fw_sta_id, u32 count,4417			bool tx, int queue)4418{4419	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(mvm_sta->vif);4420	struct iwl_mvm *mvm = mvmvif->mvm;4421	struct iwl_mvm_tpt_counter *queue_counter;4422	struct iwl_mvm_mpdu_counter *link_counter;4423	u32 total_mpdus = 0;4424	int fw_link_id;4425 4426	/* Count only for a BSS sta, and only when EMLSR is possible */4427	if (!mvm_sta->mpdu_counters)4428		return;4429 4430	/* Map sta id to link id */4431	fw_link_id = iwl_mvm_fw_sta_id_to_fw_link_id(mvmvif, fw_sta_id);4432	if (fw_link_id < 0)4433		return;4434 4435	queue_counter = &mvm_sta->mpdu_counters[queue];4436	link_counter = &queue_counter->per_link[fw_link_id];4437 4438	spin_lock_bh(&queue_counter->lock);4439 4440	if (tx)4441		link_counter->tx += count;4442	else4443		link_counter->rx += count;4444 4445	/*4446	 * When not in EMLSR, the window and the decision to enter EMLSR are4447	 * handled during counting, when in EMLSR - in the statistics flow4448	 */4449	if (mvmvif->esr_active)4450		goto out;4451 4452	if (time_is_before_jiffies(queue_counter->window_start +4453					IWL_MVM_TPT_COUNT_WINDOW)) {4454		memset(queue_counter->per_link, 0,4455		       sizeof(queue_counter->per_link));4456		queue_counter->window_start = jiffies;4457 4458		IWL_DEBUG_INFO(mvm, "MPDU counters are cleared\n");4459	}4460 4461	for (int i = 0; i < IWL_FW_MAX_LINK_ID; i++)4462		total_mpdus += tx ? queue_counter->per_link[i].tx :4463				    queue_counter->per_link[i].rx;4464 4465	if (total_mpdus > IWL_MVM_ENTER_ESR_TPT_THRESH)4466		wiphy_work_queue(mvmvif->mvm->hw->wiphy,4467				 &mvmvif->unblock_esr_tpt_wk);4468 4469out:4470	spin_unlock_bh(&queue_counter->lock);4471}4472