wifi: iwlwifi: handle per-phy statistics from fw

In the operational statistics notifications (both old and new
API) the driver receives the statistics per phy.
currently this statistics wasn't handled because they wasn't needed.

Now the channel_load_by_us parameter in these statistics will be used
for the link grading calculation (implemented in another patch),
so store its value in phy_ctxt.
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Link: https://msgid.link/20240218194912.e84f975b69ee.Ibbc7817135827e45adaaa47b796be165f9f1ca48@changeidSigned-off-by: Johannes Berg <johannes.berg@intel.com>

drivers/net/wireless/intel/iwlwifi/mvm/mvm.h

@@ -106,6 +106,7 @@ struct iwl_mvm_phy_ctxt {
 	/* track for RLC config command */
 	u32 center_freq1;
 	bool rlc_disabled;
+	u32 channel_load_by_us;
 };
 
 struct iwl_mvm_time_event_data {

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

 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
 /*
- * Copyright (C) 2012-2014, 2018-2023 Intel Corporation
+ * Copyright (C) 2012-2014, 2018-2024 Intel Corporation
  * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
  * Copyright (C) 2016-2017 Intel Deutschland GmbH
  */
@@ -752,6 +752,19 @@ iwl_mvm_update_tcm_from_stats(struct iwl_mvm *mvm, __le32 *air_time_le,
 	spin_unlock(&mvm->tcm.lock);
 }
 
+static void iwl_mvm_handle_per_phy_stats(struct iwl_mvm *mvm,
+					 struct iwl_stats_ntfy_per_phy *per_phy)
+{
+	int i;
+
+	for (i = 0; i < NUM_PHY_CTX; i++) {
+		if (!mvm->phy_ctxts[i].ref)
+			continue;
+		mvm->phy_ctxts[i].channel_load_by_us =
+			le32_to_cpu(per_phy[i].channel_load_by_us);
+	}
+}
+
 static void
 iwl_mvm_stats_ver_15(struct iwl_mvm *mvm,
 		     struct iwl_statistics_operational_ntfy *stats)
@@ -766,6 +779,7 @@ iwl_mvm_stats_ver_15(struct iwl_mvm *mvm,
 					    IEEE80211_IFACE_ITER_NORMAL,
 					    iwl_mvm_stat_iterator_all_macs,
 					    &data);
+	iwl_mvm_handle_per_phy_stats(mvm, stats->per_phy);
 }
 
 static void
@@ -942,6 +956,7 @@ void iwl_mvm_handle_rx_system_oper_stats(struct iwl_mvm *mvm,
 
 	ieee80211_iterate_stations_atomic(mvm->hw, iwl_mvm_stats_energy_iter,
 					  average_energy);
+	iwl_mvm_handle_per_phy_stats(mvm, stats->per_phy);
 }
 
 void iwl_mvm_handle_rx_system_oper_part1_stats(struct iwl_mvm *mvm,