1 files changed, 209 insertions, 224 deletions

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mld-mac80211.c b/drivers/net/wireless/intel/iwlwifi/mvm/mld-mac80211.c
index 084314bf6f36..fcfd2dd7568e 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/mld-mac80211.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/mld-mac80211.c
@@ -14,6 +14,8 @@ static int iwl_mvm_mld_mac_add_interface(struct ieee80211_hw *hw,
 
 	mutex_lock(&mvm->mutex);
 
+	iwl_mvm_mac_init_mvmvif(mvm, mvmvif);
+
 	mvmvif->mvm = mvm;
 
 	/* Not much to do here. The stack will not allow interface
@@ -73,8 +75,6 @@ static int iwl_mvm_mld_mac_add_interface(struct ieee80211_hw *hw,
 		goto out_free_bf;
 
 	iwl_mvm_tcm_add_vif(mvm, vif);
-	INIT_DELAYED_WORK(&mvmvif->csa_work,
-			  iwl_mvm_channel_switch_disconnect_wk);
 
 	if (vif->type == NL80211_IFTYPE_MONITOR) {
 		mvm->monitor_on = true;
@@ -92,6 +92,9 @@ static int iwl_mvm_mld_mac_add_interface(struct ieee80211_hw *hw,
 		mvm->csme_vif = vif;
 	}
 
+	if (vif->p2p || iwl_fw_lookup_cmd_ver(mvm->fw, PHY_CONTEXT_CMD, 1) < 5)
+		vif->driver_flags |= IEEE80211_VIF_IGNORE_OFDMA_WIDER_BW;
+
 	goto out_unlock;
 
  out_free_bf:
@@ -189,23 +192,43 @@ static void iwl_mvm_mld_mac_remove_interface(struct ieee80211_hw *hw,
 	mutex_unlock(&mvm->mutex);
 }
 
-static unsigned int iwl_mvm_mld_count_active_links(struct ieee80211_vif *vif)
+static unsigned int iwl_mvm_mld_count_active_links(struct iwl_mvm_vif *mvmvif)
 {
 	unsigned int n_active = 0;
 	int i;
 
 	for (i = 0; i < IEEE80211_MLD_MAX_NUM_LINKS; i++) {
-		struct ieee80211_bss_conf *link_conf;
-
-		link_conf = link_conf_dereference_protected(vif, i);
-		if (link_conf &&
-		    rcu_access_pointer(link_conf->chanctx_conf))
+		if (mvmvif->link[i] && mvmvif->link[i]->phy_ctxt)
 			n_active++;
 	}
 
 	return n_active;
 }
 
+static void iwl_mvm_restart_mpdu_count(struct iwl_mvm *mvm,
+				       struct iwl_mvm_vif *mvmvif)
+{
+	struct ieee80211_sta *ap_sta = mvmvif->ap_sta;
+	struct iwl_mvm_sta *mvmsta;
+
+	lockdep_assert_held(&mvm->mutex);
+
+	if (!ap_sta)
+		return;
+
+	mvmsta = iwl_mvm_sta_from_mac80211(ap_sta);
+	if (!mvmsta->mpdu_counters)
+		return;
+
+	for (int q = 0; q < mvm->trans->num_rx_queues; q++) {
+		spin_lock_bh(&mvmsta->mpdu_counters[q].lock);
+		memset(mvmsta->mpdu_counters[q].per_link, 0,
+		       sizeof(mvmsta->mpdu_counters[q].per_link));
+		mvmsta->mpdu_counters[q].window_start = jiffies;
+		spin_unlock_bh(&mvmsta->mpdu_counters[q].lock);
+	}
+}
+
 static int iwl_mvm_esr_mode_active(struct iwl_mvm *mvm,
 				   struct ieee80211_vif *vif)
 {
@@ -233,6 +256,22 @@ static int iwl_mvm_esr_mode_active(struct iwl_mvm *mvm,
 		link->phy_ctxt->rlc_disabled = true;
 	}
 
+	if (vif->active_links == mvmvif->link_selection_res &&
+	    !WARN_ON(!(vif->active_links & BIT(mvmvif->link_selection_primary))))
+		mvmvif->primary_link = mvmvif->link_selection_primary;
+	else
+		mvmvif->primary_link = __ffs(vif->active_links);
+
+	/* Needed for tracking RSSI */
+	iwl_mvm_request_periodic_system_statistics(mvm, true);
+
+	/*
+	 * Restart the MPDU counters and the counting window, so when the
+	 * statistics arrive (which is where we look at the counters) we
+	 * will be at the end of the window.
+	 */
+	iwl_mvm_restart_mpdu_count(mvm, mvmvif);
+
 	return ret;
 }
 
@@ -245,18 +284,18 @@ __iwl_mvm_mld_assign_vif_chanctx(struct iwl_mvm *mvm,
 {
 	u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
 	struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
-	unsigned int n_active = iwl_mvm_mld_count_active_links(vif);
 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
+	unsigned int n_active = iwl_mvm_mld_count_active_links(mvmvif);
 	unsigned int link_id = link_conf->link_id;
 	int ret;
 
-	/* if the assigned one was not counted yet, count it now */
-	if (!rcu_access_pointer(link_conf->chanctx_conf))
-		n_active++;
-
 	if (WARN_ON_ONCE(!mvmvif->link[link_id]))
 		return -EINVAL;
 
+	/* if the assigned one was not counted yet, count it now */
+	if (!mvmvif->link[link_id]->phy_ctxt)
+		n_active++;
+
 	/* mac parameters such as HE support can change at this stage
 	 * For sta, need first to configure correct state from drv_sta_state
 	 * and only after that update mac config.
@@ -276,6 +315,7 @@ __iwl_mvm_mld_assign_vif_chanctx(struct iwl_mvm *mvm,
 		ret = iwl_mvm_esr_mode_active(mvm, vif);
 		if (ret) {
 			IWL_ERR(mvm, "failed to activate ESR mode (%d)\n", ret);
+			iwl_mvm_request_periodic_system_statistics(mvm, false);
 			goto out;
 		}
 	}
@@ -296,13 +336,8 @@ __iwl_mvm_mld_assign_vif_chanctx(struct iwl_mvm *mvm,
 	 * this needs the phy context assigned (and in FW?), and we cannot
 	 * do it later because it needs to be initialized as soon as we're
 	 * able to TX on the link, i.e. when active.
-	 *
-	 * Firmware restart isn't quite correct yet for MLO, but we don't
-	 * need to do it in that case anyway since it will happen from the
-	 * normal station state callback.
 	 */
-	if (mvmvif->ap_sta &&
-	    !test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
+	if (mvmvif->ap_sta) {
 		struct ieee80211_link_sta *link_sta;
 
 		rcu_read_lock();
@@ -354,6 +389,18 @@ static int iwl_mvm_mld_assign_vif_chanctx(struct ieee80211_hw *hw,
 	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
 	int ret;
 
+	/* update EMLSR mode */
+	if (ieee80211_vif_type_p2p(vif) != NL80211_IFTYPE_STATION) {
+		ret = iwl_mvm_esr_non_bss_link(mvm, vif, link_conf->link_id,
+					       true);
+		/*
+		 * Don't activate this link if failed to exit EMLSR in
+		 * the BSS interface
+		 */
+		if (ret)
+			return ret;
+	}
+
 	mutex_lock(&mvm->mutex);
 	ret = __iwl_mvm_mld_assign_vif_chanctx(mvm, vif, link_conf, ctx, false);
 	mutex_unlock(&mvm->mutex);
@@ -404,6 +451,11 @@ static int iwl_mvm_esr_mode_inactive(struct iwl_mvm *mvm,
 			break;
 	}
 
+	iwl_mvm_request_periodic_system_statistics(mvm, false);
+
+	/* Start a new counting window */
+	iwl_mvm_restart_mpdu_count(mvm, mvmvif);
+
 	return ret;
 }
 
@@ -416,7 +468,7 @@ __iwl_mvm_mld_unassign_vif_chanctx(struct iwl_mvm *mvm,
 
 {
 	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
-	unsigned int n_active = iwl_mvm_mld_count_active_links(vif);
+	unsigned int n_active = iwl_mvm_mld_count_active_links(mvmvif);
 	unsigned int link_id = link_conf->link_id;
 
 	/* shouldn't happen, but verify link_id is valid before accessing */
@@ -472,6 +524,56 @@ static void iwl_mvm_mld_unassign_vif_chanctx(struct ieee80211_hw *hw,
 		iwl_mvm_add_link(mvm, vif, link_conf);
 	}
 	mutex_unlock(&mvm->mutex);
+
+	/* update EMLSR mode */
+	if (ieee80211_vif_type_p2p(vif) != NL80211_IFTYPE_STATION)
+		iwl_mvm_esr_non_bss_link(mvm, vif, link_conf->link_id, false);
+}
+
+static void
+iwl_mvm_send_ap_tx_power_constraint_cmd(struct iwl_mvm *mvm,
+					struct ieee80211_vif *vif,
+					struct ieee80211_bss_conf *bss_conf)
+{
+	struct iwl_txpower_constraints_cmd cmd = {};
+	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
+	struct iwl_mvm_vif_link_info *link_info =
+			mvmvif->link[bss_conf->link_id];
+	u32 cmd_id = WIDE_ID(PHY_OPS_GROUP, AP_TX_POWER_CONSTRAINTS_CMD);
+	u32 cmd_ver = iwl_fw_lookup_cmd_ver(mvm->fw, cmd_id,
+					    IWL_FW_CMD_VER_UNKNOWN);
+	int ret;
+
+	lockdep_assert_held(&mvm->mutex);
+
+	if (cmd_ver == IWL_FW_CMD_VER_UNKNOWN)
+		return;
+
+	if (!link_info->active ||
+	    link_info->fw_link_id == IWL_MVM_FW_LINK_ID_INVALID)
+		return;
+
+	if (bss_conf->chanreq.oper.chan->band != NL80211_BAND_6GHZ ||
+	    bss_conf->chanreq.oper.chan->flags &
+		    IEEE80211_CHAN_NO_6GHZ_VLP_CLIENT)
+		return;
+
+	cmd.link_id = cpu_to_le16(link_info->fw_link_id);
+	/*
+	 * Currently supporting VLP Soft AP only.
+	 */
+	cmd.ap_type = cpu_to_le16(IWL_6GHZ_AP_TYPE_VLP);
+	memset(cmd.psd_pwr, DEFAULT_TPE_TX_POWER, sizeof(cmd.psd_pwr));
+	memset(cmd.eirp_pwr, DEFAULT_TPE_TX_POWER, sizeof(cmd.eirp_pwr));
+
+	ret = iwl_mvm_send_cmd_pdu(mvm,
+				   WIDE_ID(PHY_OPS_GROUP,
+					   AP_TX_POWER_CONSTRAINTS_CMD),
+				   0, sizeof(cmd), &cmd);
+	if (ret)
+		IWL_ERR(mvm,
+			"failed to send AP_TX_POWER_CONSTRAINTS_CMD (%d)\n",
+			ret);
 }
 
 static int iwl_mvm_mld_start_ap_ibss(struct ieee80211_hw *hw,
@@ -483,6 +585,10 @@ static int iwl_mvm_mld_start_ap_ibss(struct ieee80211_hw *hw,
 	int ret;
 
 	mutex_lock(&mvm->mutex);
+
+	if (vif->type == NL80211_IFTYPE_AP)
+		iwl_mvm_send_ap_tx_power_constraint_cmd(mvm, vif, link_conf);
+
 	/* Send the beacon template */
 	ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif, link_conf);
 	if (ret)
@@ -601,126 +707,23 @@ static int iwl_mvm_mld_mac_sta_state(struct ieee80211_hw *hw,
 					    &callbacks);
 }
 
-struct iwl_mvm_link_sel_data {
-	u8 link_id;
-	enum nl80211_band band;
-	enum nl80211_chan_width width;
-	bool active;
-};
-
-static bool iwl_mvm_mld_valid_link_pair(struct iwl_mvm_link_sel_data *a,
-					struct iwl_mvm_link_sel_data *b)
-{
-	return a->band != b->band;
-}
-
-void iwl_mvm_mld_select_links(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
-			      bool valid_links_changed)
+static bool iwl_mvm_esr_bw_criteria(struct iwl_mvm *mvm,
+				    struct ieee80211_vif *vif,
+				    struct ieee80211_bss_conf *link_conf)
 {
-	struct iwl_mvm_link_sel_data data[IEEE80211_MLD_MAX_NUM_LINKS];
-	unsigned long usable_links = ieee80211_vif_usable_links(vif);
-	u32 max_active_links = iwl_mvm_max_active_links(mvm, vif);
-	u16 new_active_links;
-	u8 link_id, n_data = 0, i, j;
-
-	if (!IWL_MVM_AUTO_EML_ENABLE)
-		return;
-
-	if (!ieee80211_vif_is_mld(vif) || usable_links == 1)
-		return;
-
-	/* The logic below is a simple version that doesn't suit more than 2
-	 * links
-	 */
-	WARN_ON_ONCE(max_active_links > 2);
-
-	/* if only a single active link is supported, assume that the one
-	 * selected by higher layer for connection establishment is the best.
-	 */
-	if (max_active_links == 1 && !valid_links_changed)
-		return;
-
-	/* If we are already using the maximal number of active links, don't do
-	 * any change. This can later be optimized to pick a 'better' link pair.
-	 */
-	if (hweight16(vif->active_links) == max_active_links)
-		return;
-
-	rcu_read_lock();
-
-	for_each_set_bit(link_id, &usable_links, IEEE80211_MLD_MAX_NUM_LINKS) {
-		struct ieee80211_bss_conf *link_conf =
-			rcu_dereference(vif->link_conf[link_id]);
+	struct ieee80211_bss_conf *other_link;
+	int link_id;
 
-		if (WARN_ON_ONCE(!link_conf))
+	/* Exit EMLSR if links don't have equal bandwidths */
+	for_each_vif_active_link(vif, other_link, link_id) {
+		if (link_id == link_conf->link_id)
 			continue;
-
-		data[n_data].link_id = link_id;
-		data[n_data].band = link_conf->chanreq.oper.chan->band;
-		data[n_data].width = link_conf->chanreq.oper.width;
-		data[n_data].active = vif->active_links & BIT(link_id);
-		n_data++;
-	}
-
-	rcu_read_unlock();
-
-	/* this is expected to be the current active link */
-	if (n_data == 1)
-		return;
-
-	new_active_links = 0;
-
-	/* Assume that after association only a single link is active, thus,
-	 * select only the 2nd link
-	 */
-	if (!valid_links_changed) {
-		for (i = 0; i < n_data; i++) {
-			if (data[i].active)
-				break;
-		}
-
-		if (WARN_ON_ONCE(i == n_data))
-			return;
-
-		for (j = 0; j < n_data; j++) {
-			if (i == j)
-				continue;
-
-			if (iwl_mvm_mld_valid_link_pair(&data[i], &data[j]))
-				break;
-		}
-
-		if (j != n_data)
-			new_active_links = BIT(data[i].link_id) |
-				BIT(data[j].link_id);
-	} else {
-		/* Try to find a valid link pair for EMLSR operation. If a pair
-		 * is not found continue using the current active link.
-		 */
-		for (i = 0; i < n_data; i++) {
-			for (j = 0; j < n_data; j++) {
-				if (i == j)
-					continue;
-
-				if (iwl_mvm_mld_valid_link_pair(&data[i],
-								&data[j]))
-					break;
-			}
-
-			/* found a valid pair for EMLSR, use it */
-			if (j != n_data) {
-				new_active_links = BIT(data[i].link_id) |
-					BIT(data[j].link_id);
-				break;
-			}
-		}
+		if (link_conf->chanreq.oper.width ==
+		    other_link->chanreq.oper.width)
+			return true;
 	}
 
-	if (!new_active_links)
-		return;
-
-	if (vif->active_links != new_active_links)
-		ieee80211_set_active_links_async(vif, new_active_links);
+	return false;
 }
 
 static void
@@ -752,6 +755,14 @@ iwl_mvm_mld_link_info_changed_station(struct iwl_mvm *mvm,
 		link_changes |= LINK_CONTEXT_MODIFY_HE_PARAMS;
 	}
 
+	if ((changes & BSS_CHANGED_BANDWIDTH) &&
+	    ieee80211_vif_link_active(vif, link_conf->link_id) &&
+	    mvmvif->esr_active &&
+	    !iwl_mvm_esr_bw_criteria(mvm, vif, link_conf))
+		iwl_mvm_exit_esr(mvm, vif,
+				 IWL_MVM_ESR_EXIT_BANDWIDTH,
+				 iwl_mvm_get_primary_link(vif));
+
 	/* if associated, maybe puncturing changed - we'll check later */
 	if (vif->cfg.assoc)
 		link_changes |= LINK_CONTEXT_MODIFY_EHT_PARAMS;
@@ -767,9 +778,6 @@ iwl_mvm_mld_link_info_changed_station(struct iwl_mvm *mvm,
 	if (ret)
 		IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
 
-	if (changes & BSS_CHANGED_MLD_VALID_LINKS)
-		iwl_mvm_mld_select_links(mvm, vif, true);
-
 	memcpy(mvmvif->link[link_conf->link_id]->bssid, link_conf->bssid,
 	       ETH_ALEN);
 
@@ -912,6 +920,11 @@ static void iwl_mvm_mld_vif_cfg_changed_station(struct iwl_mvm *mvm,
 		if (ret)
 			IWL_ERR(mvm, "failed to update power mode\n");
 	}
+
+	if (changes & (BSS_CHANGED_MLD_VALID_LINKS | BSS_CHANGED_MLD_TTLM) &&
+	    ieee80211_vif_is_mld(vif) && mvmvif->authorized)
+		wiphy_delayed_work_queue(mvm->hw->wiphy,
+					 &mvmvif->mlo_int_scan_wk, 0);
 }
 
 static void
@@ -1190,6 +1203,14 @@ iwl_mvm_mld_change_vif_links(struct ieee80211_hw *hw,
 	if (new_links == 0) {
 		mvmvif->link[0] = &mvmvif->deflink;
 		err = iwl_mvm_add_link(mvm, vif, &vif->bss_conf);
+		if (err == 0)
+			mvmvif->primary_link = 0;
+	} else if (!(new_links & BIT(mvmvif->primary_link))) {
+		/*
+		 * Ensure we always have a valid primary_link, the real
+		 * decision happens later when PHY is activated.
+		 */
+		mvmvif->primary_link = __ffs(new_links);
 	}
 
 out_err:
@@ -1218,68 +1239,14 @@ iwl_mvm_mld_change_sta_links(struct ieee80211_hw *hw,
 	return ret;
 }
 
-/*
- * This function receives a subset of the usable links bitmap and
- * returns the primary link id, and -1 if such link doesn't exist
- * (e.g. non-MLO connection) or wasn't found.
- */
-int iwl_mvm_mld_get_primary_link(struct iwl_mvm *mvm,
-				 struct ieee80211_vif *vif,
-				 unsigned long usable_links)
-{
-	struct iwl_mvm_link_sel_data data[IEEE80211_MLD_MAX_NUM_LINKS];
-	u8 link_id, n_data = 0;
-
-	if (!ieee80211_vif_is_mld(vif) || !vif->cfg.assoc)
-		return -1;
-
-	for_each_set_bit(link_id, &usable_links, IEEE80211_MLD_MAX_NUM_LINKS) {
-		struct ieee80211_bss_conf *link_conf =
-			link_conf_dereference_protected(vif, link_id);
-
-		if (WARN_ON_ONCE(!link_conf))
-			continue;
-
-		data[n_data].link_id = link_id;
-		data[n_data].band = link_conf->chanreq.oper.chan->band;
-		data[n_data].width = link_conf->chanreq.oper.width;
-		data[n_data].active = true;
-		n_data++;
-	}
-
-	if (n_data <= 1)
-		return -1;
-
-	/* The logic should be modified to handle more than 2 links */
-	WARN_ON_ONCE(n_data > 2);
-
-	/* Primary link is the link with the wider bandwidth or higher band */
-	if (data[0].width > data[1].width)
-		return data[0].link_id;
-	if (data[0].width < data[1].width)
-		return data[1].link_id;
-	if (data[0].band >= data[1].band)
-		return data[0].link_id;
-
-	return data[1].link_id;
-}
-
-/*
- * This function receives a bitmap of usable links and check if we can enter
- * eSR on those links.
- */
-static bool iwl_mvm_can_enter_esr(struct iwl_mvm *mvm,
-				  struct ieee80211_vif *vif,
-				  unsigned long desired_links)
+bool iwl_mvm_vif_has_esr_cap(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
 {
-	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
-	int primary_link = iwl_mvm_mld_get_primary_link(mvm, vif,
-							desired_links);
 	const struct wiphy_iftype_ext_capab *ext_capa;
-	bool ret = true;
-	int link_id;
 
-	if (primary_link < 0)
+	lockdep_assert_held(&mvm->mutex);
+
+	if (!ieee80211_vif_is_mld(vif) || !vif->cfg.assoc ||
+	    hweight16(ieee80211_vif_usable_links(vif)) == 1)
 		return false;
 
 	if (!(vif->cfg.eml_cap & IEEE80211_EML_CAP_EMLSR_SUPP))
@@ -1287,30 +1254,8 @@ static bool iwl_mvm_can_enter_esr(struct iwl_mvm *mvm,
 
 	ext_capa = cfg80211_get_iftype_ext_capa(mvm->hw->wiphy,
 						ieee80211_vif_type_p2p(vif));
-	if (!ext_capa ||
-	    !(ext_capa->eml_capabilities & IEEE80211_EML_CAP_EMLSR_SUPP))
-		return false;
-
-	for_each_set_bit(link_id, &desired_links, IEEE80211_MLD_MAX_NUM_LINKS) {
-		struct ieee80211_bss_conf *link_conf =
-			link_conf_dereference_protected(vif, link_id);
-
-		if (WARN_ON_ONCE(!link_conf))
-			continue;
-
-		/* BT Coex effects eSR mode only if one of the link is on LB */
-		if (link_conf->chanreq.oper.chan->band != NL80211_BAND_2GHZ)
-			continue;
-
-		ret = iwl_mvm_bt_coex_calculate_esr_mode(mvm, vif, link_id,
-							 primary_link);
-		// Mark eSR as disabled for the next time
-		if (!ret)
-			mvmvif->bt_coex_esr_disabled = true;
-		break;
-	}
-
-	return ret;
+	return (ext_capa &&
+		(ext_capa->eml_capabilities & IEEE80211_EML_CAP_EMLSR_SUPP));
 }
 
 static bool iwl_mvm_mld_can_activate_links(struct ieee80211_hw *hw,
@@ -1333,8 +1278,9 @@ static bool iwl_mvm_mld_can_activate_links(struct ieee80211_hw *hw,
 	}
 
 	/* If it is an eSR device, check that we can enter eSR */
-	if (iwl_mvm_is_esr_supported(mvm->fwrt.trans))
-		ret = iwl_mvm_can_enter_esr(mvm, vif, desired_links);
+	ret = iwl_mvm_is_esr_supported(mvm->fwrt.trans) &&
+	      iwl_mvm_vif_has_esr_cap(mvm, vif);
+
 unlock:
 	mutex_unlock(&mvm->mutex);
 	return ret;
@@ -1358,6 +1304,45 @@ iwl_mvm_mld_can_neg_ttlm(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 	return NEG_TTLM_RES_ACCEPT;
 }
 
+static int
+iwl_mvm_mld_mac_pre_channel_switch(struct ieee80211_hw *hw,
+				   struct ieee80211_vif *vif,
+				   struct ieee80211_channel_switch *chsw)
+{
+	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
+	struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
+	int ret;
+
+	mutex_lock(&mvm->mutex);
+	if (mvmvif->esr_active) {
+		u8 primary = iwl_mvm_get_primary_link(vif);
+		int selected;
+
+		/* prefer primary unless quiet CSA on it */
+		if (chsw->link_id == primary && chsw->block_tx)
+			selected = iwl_mvm_get_other_link(vif, primary);
+		else
+			selected = primary;
+
+		iwl_mvm_exit_esr(mvm, vif, IWL_MVM_ESR_EXIT_CSA, selected);
+		mutex_unlock(&mvm->mutex);
+
+		/*
+		 * If we've not kept the link active that's doing the CSA
+		 * then we don't need to do anything else, just return.
+		 */
+		if (selected != chsw->link_id)
+			return 0;
+
+		mutex_lock(&mvm->mutex);
+	}
+
+	ret = iwl_mvm_pre_channel_switch(mvm, vif, chsw);
+	mutex_unlock(&mvm->mutex);
+
+	return ret;
+}
+
 const struct ieee80211_ops iwl_mvm_mld_hw_ops = {
 	.tx = iwl_mvm_mac_tx,
 	.wake_tx_queue = iwl_mvm_mac_wake_tx_queue,
@@ -1411,7 +1396,7 @@ const struct ieee80211_ops iwl_mvm_mld_hw_ops = {
 	.tx_last_beacon = iwl_mvm_tx_last_beacon,
 
 	.channel_switch = iwl_mvm_channel_switch,
-	.pre_channel_switch = iwl_mvm_pre_channel_switch,
+	.pre_channel_switch = iwl_mvm_mld_mac_pre_channel_switch,
 	.post_channel_switch = iwl_mvm_post_channel_switch,
 	.abort_channel_switch = iwl_mvm_abort_channel_switch,
 	.channel_switch_rx_beacon = iwl_mvm_channel_switch_rx_beacon,