From bc1be54d7eb4ab4c6bd44e9f73d5b44b6c8e761c Mon Sep 17 00:00:00 2001 From: Miri Korenblit Date: Thu, 8 Jun 2023 16:36:06 +0300 Subject: [PATCH] wifi: mac80211: allow disabling SMPS debugfs controls There are cases in which we don't want the user to override the smps mode, e.g. when SMPS should be disabled due to EMLSR. Add a driver flag to disable SMPS overriding and don't override if it is set. Signed-off-by: Miri Korenblit Signed-off-by: Gregory Greenman Link: https://lore.kernel.org/r/20230608163202.ef129e80556c.I74a298fdc86b87074c95228d3916739de1400597@changeid Signed-off-by: Johannes Berg --- include/net/mac80211.h | 3 +++ net/mac80211/debugfs_netdev.c | 5 ++++- 2 files changed, 7 insertions(+), 1 deletion(-) diff --git a/include/net/mac80211.h b/include/net/mac80211.h index 8ea2388..98cb2c5 100644 --- a/include/net/mac80211.h +++ b/include/net/mac80211.h @@ -1755,12 +1755,15 @@ struct ieee80211_channel_switch { * @IEEE80211_VIF_GET_NOA_UPDATE: request to handle NOA attributes * and send P2P_PS notification to the driver if NOA changed, even * this is not pure P2P vif. + * @IEEE80211_VIF_DISABLE_SMPS_OVERRIDE: disable user configuration of + * SMPS mode via debugfs. */ enum ieee80211_vif_flags { IEEE80211_VIF_BEACON_FILTER = BIT(0), IEEE80211_VIF_SUPPORTS_CQM_RSSI = BIT(1), IEEE80211_VIF_SUPPORTS_UAPSD = BIT(2), IEEE80211_VIF_GET_NOA_UPDATE = BIT(3), + IEEE80211_VIF_DISABLE_SMPS_OVERRIDE = BIT(4), }; diff --git a/net/mac80211/debugfs_netdev.c b/net/mac80211/debugfs_netdev.c index b0cef37..3fea86c 100644 --- a/net/mac80211/debugfs_netdev.c +++ b/net/mac80211/debugfs_netdev.c @@ -2,7 +2,7 @@ /* * Copyright (c) 2006 Jiri Benc * Copyright 2007 Johannes Berg - * Copyright (C) 2020-2022 Intel Corporation + * Copyright (C) 2020-2023 Intel Corporation */ #include @@ -267,6 +267,9 @@ static int ieee80211_set_smps(struct ieee80211_link_data *link, struct ieee80211_local *local = sdata->local; int err; + if (sdata->vif.driver_flags & IEEE80211_VIF_DISABLE_SMPS_OVERRIDE) + return -EOPNOTSUPP; + if (!(local->hw.wiphy->features & NL80211_FEATURE_STATIC_SMPS) && smps_mode == IEEE80211_SMPS_STATIC) return -EINVAL; -- 2.7.4