From 606b9ab67784b02572269d0c76f28bbef9328c6b Mon Sep 17 00:00:00 2001
From: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Date: Thu, 4 Oct 2018 10:41:45 +0300
Subject: [PATCH] iwlwifi: mvm: fix firmware statistics usage
Git-commit: 606b9ab67784b02572269d0c76f28bbef9328c6b
Patch-mainline: v5.1-rc1
References: bsc#1129770

The new (CDB) statistics API is used by non-CDB devices
as well. Look at the right TLV flag to know which version
of the statistics notification to use.
To avoid confusion, remove the _cdb suffix from the
structure name.
While at it, remove a structure that was never used.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Fixes: 678d9b6dddea ("iwlwifi: mvm: update rx statistics cmd api")
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Oliver Neukum <oneukum@suse.com>
---
 drivers/net/wireless/intel/iwlwifi/fw/api/stats.h |   15 +++++----------
 drivers/net/wireless/intel/iwlwifi/mvm/rx.c       |   10 +++++-----
 2 files changed, 10 insertions(+), 15 deletions(-)

--- a/drivers/net/wireless/intel/iwlwifi/fw/api/stats.h
+++ b/drivers/net/wireless/intel/iwlwifi/fw/api/stats.h
@@ -8,6 +8,7 @@
  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
  * Copyright(c) 2016 - 2017 Intel Deutschland GmbH
+ * Copyright (C) 2018 Intel Corporation
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of version 2 of the GNU General Public License as
@@ -29,6 +30,7 @@
  *
  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH
+ * Copyright (C) 2018 Intel Corporation
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -363,14 +365,7 @@ struct mvm_statistics_general_v8 {
 	u8 reserved[4 - (NUM_MAC_INDEX % 4)];
 } __packed; /* STATISTICS_GENERAL_API_S_VER_8 */
 
-struct mvm_statistics_general_cdb_v9 {
-	struct mvm_statistics_general_common_v19 common;
-	__le32 beacon_counter[NUM_MAC_INDEX_CDB];
-	u8 beacon_average_energy[NUM_MAC_INDEX_CDB];
-	u8 reserved[4 - (NUM_MAC_INDEX_CDB % 4)];
-} __packed; /* STATISTICS_GENERAL_API_S_VER_9 */
-
-struct mvm_statistics_general_cdb {
+struct mvm_statistics_general {
 	struct mvm_statistics_general_common common;
 	__le32 beacon_counter[MAC_INDEX_AUX];
 	u8 beacon_average_energy[MAC_INDEX_AUX];
@@ -435,11 +430,11 @@ struct iwl_notif_statistics_v11 {
 	struct mvm_statistics_load_v1 load_stats;
 } __packed; /* STATISTICS_NTFY_API_S_VER_11 */
 
-struct iwl_notif_statistics_cdb {
+struct iwl_notif_statistics {
 	__le32 flag;
 	struct mvm_statistics_rx rx;
 	struct mvm_statistics_tx tx;
-	struct mvm_statistics_general_cdb general;
+	struct mvm_statistics_general general;
 	struct mvm_statistics_load load_stats;
 } __packed; /* STATISTICS_NTFY_API_S_VER_13 */
 
--- a/drivers/net/wireless/intel/iwlwifi/mvm/rx.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/rx.c
@@ -610,8 +610,8 @@ static void iwl_mvm_stat_iterator(void *
 	if (data->general) {
 		u16 vif_id = mvmvif->id;
 
-		if (iwl_mvm_is_cdb_supported(mvm)) {
-			struct mvm_statistics_general_cdb *general =
+		if (iwl_mvm_has_new_rx_stats_api(mvm)) {
+			struct mvm_statistics_general *general =
 				data->general;
 
 			mvmvif->beacon_stats.num_beacons =
@@ -738,7 +738,7 @@ void iwl_mvm_handle_rx_statistics(struct
 		else
 			expected_size = sizeof(struct iwl_notif_statistics_v10);
 	} else {
-		expected_size = sizeof(struct iwl_notif_statistics_cdb);
+		expected_size = sizeof(struct iwl_notif_statistics);
 	}
 
 	if (WARN_ONCE(iwl_rx_packet_payload_len(pkt) != expected_size,
@@ -768,7 +768,7 @@ void iwl_mvm_handle_rx_statistics(struct
 
 		flags = stats->flag;
 	} else {
-		struct iwl_notif_statistics_cdb *stats = (void *)&pkt->data;
+		struct iwl_notif_statistics *stats = (void *)&pkt->data;
 
 		data.mac_id = stats->rx.general.mac_id;
 		data.beacon_filter_average_energy =
@@ -807,7 +807,7 @@ void iwl_mvm_handle_rx_statistics(struct
 		bytes = (void *)&v11->load_stats.byte_count;
 		air_time = (void *)&v11->load_stats.air_time;
 	} else {
-		struct iwl_notif_statistics_cdb *stats = (void *)&pkt->data;
+		struct iwl_notif_statistics *stats = (void *)&pkt->data;
 
 		energy = (void *)&stats->load_stats.avg_energy;
 		bytes = (void *)&stats->load_stats.byte_count;