wifi: iwlwifi: mvm: Add handling for scan offload match info notification

To support FW versions that send the scan match information as
an asynchronous notification.
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20220906161827.bbc5602d0b6f.I1329c231f82e7bf18f7dba0ccbd9f2d4080cbfc1@changeidSigned-off-by: Gregory Greenman <gregory.greenman@intel.com>

drivers/net/wireless/intel/iwlwifi/fw/api/commands.h

@@ -2,7 +2,7 @@
 /*
  * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
  * Copyright (C) 2016-2017 Intel Deutschland GmbH
- * Copyright (C) 2018-2020 Intel Corporation
+ * Copyright (C) 2018-2022 Intel Corporation
  */
 #ifndef __iwl_fw_api_commands_h__
 #define __iwl_fw_api_commands_h__
@@ -20,6 +20,8 @@
  *	&enum iwl_phy_ops_subcmd_ids
  * @DATA_PATH_GROUP: data path group, uses command IDs from
  *	&enum iwl_data_path_subcmd_ids
+ * @SCAN_GROUP: scan group, uses command IDs from
+ *	&enum iwl_scan_subcmd_ids
  * @NAN_GROUP: NAN group, uses command IDs from &enum iwl_nan_subcmd_ids
  * @LOCATION_GROUP: location group, uses command IDs from
  *	&enum iwl_location_subcmd_ids
@@ -36,6 +38,7 @@ enum iwl_mvm_command_groups {
 	MAC_CONF_GROUP = 0x3,
 	PHY_OPS_GROUP = 0x4,
 	DATA_PATH_GROUP = 0x5,
+	SCAN_GROUP = 0x6,
 	NAN_GROUP = 0x7,
 	LOCATION_GROUP = 0x8,
 	PROT_OFFLOAD_GROUP = 0xb,

drivers/net/wireless/intel/iwlwifi/fw/api/scan.h

 /* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */
 /*
- * Copyright (C) 2012-2014, 2018-2021 Intel Corporation
+ * Copyright (C) 2012-2014, 2018-2022 Intel Corporation
  * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
  * Copyright (C) 2016-2017 Intel Deutschland GmbH
  */
@@ -9,6 +9,16 @@
 
 /* Scan Commands, Responses, Notifications */
 
+/**
+ * enum iwl_scan_subcmd_ids - scan commands
+ */
+enum iwl_scan_subcmd_ids {
+	/**
+	 * @OFFLOAD_MATCH_INFO_NOTIF: &struct iwl_scan_offload_match_info
+	 */
+	OFFLOAD_MATCH_INFO_NOTIF = 0xFC,
+};
+
 /* Max number of IEs for direct SSID scans in a command */
 #define PROBE_OPTION_MAX		20
 
@@ -1188,7 +1198,7 @@ struct iwl_scan_offload_profile_match {
 } __packed; /* SCAN_OFFLOAD_PROFILE_MATCH_RESULTS_S_VER_2 */
 
 /**
- * struct iwl_scan_offload_profiles_query - match results query response
+ * struct iwl_scan_offload_match_info - match results information
  * @matched_profiles: bitmap of matched profiles, referencing the
  *	matches passed in the scan offload request
  * @last_scan_age: age of the last offloaded scan
@@ -1200,7 +1210,7 @@ struct iwl_scan_offload_profile_match {
  * @reserved: reserved
  * @matches: array of match information, one for each match
  */
-struct iwl_scan_offload_profiles_query {
+struct iwl_scan_offload_match_info {
 	__le32 matched_profiles;
 	__le32 last_scan_age;
 	__le32 n_scans_done;
@@ -1210,7 +1220,9 @@ struct iwl_scan_offload_profiles_query {
 	u8 self_recovery;
 	__le16 reserved;
 	struct iwl_scan_offload_profile_match matches[];
-} __packed; /* SCAN_OFFLOAD_PROFILES_QUERY_RSP_S_VER_3 */
+} __packed; /* SCAN_OFFLOAD_PROFILES_QUERY_RSP_S_VER_3 and
+	     * SCAN_OFFLOAD_MATCH_INFO_NOTIFICATION_S_VER_1
+	     */
 
 /**
  * struct iwl_umac_scan_iter_complete_notif - notifies end of scanning iteration

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

@@ -554,6 +554,13 @@ static const struct iwl_hcmd_names iwl_mvm_data_path_names[] = {
 	HCMD_NAME(RX_QUEUES_NOTIFICATION),
 };
 
+/* Please keep this array *SORTED* by hex value.
+ * Access is done through binary search
+ */
+static const struct iwl_hcmd_names iwl_mvm_scan_names[] = {
+	HCMD_NAME(OFFLOAD_MATCH_INFO_NOTIF),
+};
+
 /* Please keep this array *SORTED* by hex value.
  * Access is done through binary search
  */
@@ -596,6 +603,7 @@ static const struct iwl_hcmd_arr iwl_mvm_groups[] = {
 	[MAC_CONF_GROUP] = HCMD_ARR(iwl_mvm_mac_conf_names),
 	[PHY_OPS_GROUP] = HCMD_ARR(iwl_mvm_phy_names),
 	[DATA_PATH_GROUP] = HCMD_ARR(iwl_mvm_data_path_names),
+	[SCAN_GROUP] = HCMD_ARR(iwl_mvm_scan_names),
 	[LOCATION_GROUP] = HCMD_ARR(iwl_mvm_location_names),
 	[PROT_OFFLOAD_GROUP] = HCMD_ARR(iwl_mvm_prot_offload_names),
 	[REGULATORY_AND_NVM_GROUP] =