wifi: iwlwifi: mvm: fix RFKILL report when driver is going down

When CSME takes ownership, the driver sets RFKILL on, and this
triggers driver unload and sending the confirmation SAP message.
However, when IWL_MVM_MEI_REPORT_RFKILL is set, RFKILL was not
reported and as a result, the driver did not confirm the ownership
transition. Fix it.

Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230418122405.29ac3cd3df73.I96b32bc274bfe1e3871e54d3fa29c7ac4f40446f@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

drivers/net/wireless/intel/iwlwifi/mei/iwl-mei.h

@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 /*
- * Copyright (C) 2021 Intel Corporation
+ * Copyright (C) 2021 - 2022 Intel Corporation
  */
 
 #ifndef __iwl_mei_h__
@@ -301,7 +301,7 @@ struct iwl_mei_colloc_info {
 struct iwl_mei_ops {
 	void (*me_conn_status)(void *priv,
 			       const struct iwl_mei_conn_info *conn_info);
-	void (*rfkill)(void *priv, bool blocked);
+	void (*rfkill)(void *priv, bool blocked, bool csme_taking_ownership);
 	void (*roaming_forbidden)(void *priv, bool forbidden);
 	void (*sap_connected)(void *priv);
 	void (*nic_stolen)(void *priv);

drivers/net/wireless/intel/iwlwifi/mei/main.c

@@ -724,7 +724,7 @@ iwl_mei_handle_conn_status(struct mei_cl_device *cldev,
 						     status->link_prot_state);
 	else
 		iwl_mei_cache.ops->rfkill(iwl_mei_cache.priv,
-					  status->link_prot_state);
+					  status->link_prot_state, false);
 }
 
 static void iwl_mei_set_init_conf(struct iwl_mei *mei)
@@ -796,7 +796,7 @@ static void iwl_mei_handle_amt_state(struct mei_cl_device *cldev,
 	if (mei->amt_enabled)
 		iwl_mei_set_init_conf(mei);
 	else if (iwl_mei_cache.ops)
-		iwl_mei_cache.ops->rfkill(iwl_mei_cache.priv, false);
+		iwl_mei_cache.ops->rfkill(iwl_mei_cache.priv, false, false);
 
 	schedule_work(&mei->netdev_work);
 
@@ -837,7 +837,7 @@ static void iwl_mei_handle_csme_taking_ownership(struct mei_cl_device *cldev,
 		 */
 		mei->csme_taking_ownership = true;
 
-		iwl_mei_cache.ops->rfkill(iwl_mei_cache.priv, true);
+		iwl_mei_cache.ops->rfkill(iwl_mei_cache.priv, true, true);
 	} else {
 		iwl_mei_send_sap_msg(cldev,
 				     SAP_MSG_NOTIF_CSME_OWNERSHIP_CONFIRMED);
@@ -892,7 +892,7 @@ static void iwl_mei_handle_rx_host_own_req(struct mei_cl_device *cldev,
 
 	/* We can now start the connection, unblock rfkill */
 	if (iwl_mei_cache.ops)
-		iwl_mei_cache.ops->rfkill(iwl_mei_cache.priv, false);
+		iwl_mei_cache.ops->rfkill(iwl_mei_cache.priv, false, false);
 }
 
 static void iwl_mei_handle_pldr_ack(struct mei_cl_device *cldev,
@@ -1791,7 +1791,8 @@ int iwl_mei_register(void *priv, const struct iwl_mei_ops *ops)
 		if (iwl_mei_is_connected()) {
 			if (mei->amt_enabled)
 				iwl_mei_send_sap_msg(mei->cldev,
-						     SAP_MSG_NOTIF_WIFIDR_UP);
+						     SAP_MSG_NOTIF_WIFIDR_UP,
+						     false);
 			ops->rfkill(priv, mei->link_prot_state);
 		}
 	}
@@ -2111,7 +2112,7 @@ static void iwl_mei_remove(struct mei_cl_device *cldev)
 	spin_unlock_bh(&mei->data_q_lock);
 
 	if (iwl_mei_cache.ops)
-		iwl_mei_cache.ops->rfkill(iwl_mei_cache.priv, false);
+		iwl_mei_cache.ops->rfkill(iwl_mei_cache.priv, false, false);
 
 	/*
 	 * mei_cldev_disable will return only after all the MEI Rx is done.

drivers/net/wireless/intel/iwlwifi/mvm/ops.c

@@ -1020,10 +1020,14 @@ static void iwl_mvm_me_conn_status(void *priv, const struct iwl_mei_conn_info *c
 		kfree_rcu(prev_conn_info, rcu_head);
 }
 
-static void iwl_mvm_mei_rfkill(void *priv, bool blocked)
+static void iwl_mvm_mei_rfkill(void *priv, bool blocked,
+			       bool csme_taking_ownership)
 {
 	struct iwl_mvm *mvm = priv;
 
+	if (blocked && !csme_taking_ownership)
+		return;
+
 	mvm->mei_rfkill_blocked = blocked;
 	if (!mvm->hw_registered)
 		return;