From c561ac93cd80b7b13ee325dbe254e22c76f22355 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Thu, 24 Apr 2025 15:38:24 +0300 Subject: [PATCH] wifi: iwlwifi: mld: skip unknown FW channel load values The firmware statistics were previously reporting bogus/old channel load values if the device hadn't been active on a given channel; it'll report an unknown value now for those statistics affected (channel_load and channel_load_not_by_us.) Handle that by simply skipping the value, the averaging would result in the exact same value as before. Signed-off-by: Johannes Berg Signed-off-by: Miri Korenblit Link: https://patch.msgid.link/20250424153620.db5410318642.I4d2981f68b915ad335bb02c926e9289c2a60ea6c@changeid Signed-off-by: Johannes Berg --- drivers/net/wireless/intel/iwlwifi/fw/api/stats.h | 5 ++++- drivers/net/wireless/intel/iwlwifi/mld/stats.c | 14 ++++++++++---- 2 files changed, 14 insertions(+), 5 deletions(-) diff --git a/drivers/net/wireless/intel/iwlwifi/fw/api/stats.h b/drivers/net/wireless/intel/iwlwifi/fw/api/stats.h index 0a9f14fb04be..00713a991879 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/api/stats.h +++ b/drivers/net/wireless/intel/iwlwifi/fw/api/stats.h @@ -1,6 +1,6 @@ /* SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause */ /* - * Copyright (C) 2012-2014, 2018, 2020 - 2021, 2023 - 2024 Intel Corporation + * Copyright (C) 2012-2014, 2018, 2020-2021, 2023-2025 Intel Corporation * Copyright (C) 2013-2015 Intel Mobile Communications GmbH * Copyright (C) 2016-2017 Intel Deutschland GmbH */ @@ -584,6 +584,9 @@ struct iwl_stats_ntfy_per_phy { __le32 last_tx_ch_width_indx; } __packed; /* STATISTICS_NTFY_PER_PHY_API_S_VER_1 */ +/* unknown channel load (due to not being active on channel) */ +#define IWL_STATS_UNKNOWN_CHANNEL_LOAD 0xffffffff + /** * struct iwl_stats_ntfy_per_sta * diff --git a/drivers/net/wireless/intel/iwlwifi/mld/stats.c b/drivers/net/wireless/intel/iwlwifi/mld/stats.c index 0715bbc31031..360a6bfbbfb2 100644 --- a/drivers/net/wireless/intel/iwlwifi/mld/stats.c +++ b/drivers/net/wireless/intel/iwlwifi/mld/stats.c @@ -467,12 +467,18 @@ static void iwl_mld_fill_chanctx_stats(struct ieee80211_hw *hw, old_load = phy->avg_channel_load_not_by_us; new_load = le32_to_cpu(per_phy[phy->fw_id].channel_load_not_by_us); - if (IWL_FW_CHECK(phy->mld, new_load > 100, "Invalid channel load %u\n", - new_load)) + + if (IWL_FW_CHECK(phy->mld, + new_load != IWL_STATS_UNKNOWN_CHANNEL_LOAD && + new_load > 100, + "Invalid channel load %u\n", new_load)) return; - /* give a weight of 0.5 for the old value */ - phy->avg_channel_load_not_by_us = (new_load >> 1) + (old_load >> 1); + if (new_load != IWL_STATS_UNKNOWN_CHANNEL_LOAD) { + /* update giving a weight of 0.5 for the old value */ + phy->avg_channel_load_not_by_us = (new_load >> 1) + + (old_load >> 1); + } iwl_mld_emlsr_check_chan_load(hw, phy, old_load); } -- 2.25.1