From 5cbc95a749c5f3b238af0953881edede9bfe5bf6 Mon Sep 17 00:00:00 2001 From: Eliad Peller Date: Wed, 7 Jan 2015 17:50:09 +0200 Subject: [PATCH] mac80211: remove local->radar_detect_enabled local->radar_detect_enabled should tell whether radar_detect is enabled on any interface belonging to local. However, it's not getting updated correctly in many cases (actually, when testing with hwsim it's never been set, even when the dfs master is beaconing). Instead of handling all the corner cases (e.g. channel switch), simply check whether radar detection is enabled only when needed, instead of caching the result. Signed-off-by: Eliad Peller Signed-off-by: Johannes Berg --- net/mac80211/cfg.c | 2 +- net/mac80211/chan.c | 5 ++--- net/mac80211/ieee80211_i.h | 3 +-- net/mac80211/scan.c | 2 +- 4 files changed, 5 insertions(+), 7 deletions(-) diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 9ccecb405ede..fd6860d7f557 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -2557,7 +2557,7 @@ static int ieee80211_start_roc_work(struct ieee80211_local *local, /* if there's one pending or we're scanning, queue this one */ if (!list_empty(&local->roc_list) || - local->scanning || local->radar_detect_enabled) + local->scanning || ieee80211_is_radar_required(local)) goto out_check_combine; /* if not HW assist, just queue & schedule work */ diff --git a/net/mac80211/chan.c b/net/mac80211/chan.c index da1c12c34487..92c721dbd5af 100644 --- a/net/mac80211/chan.c +++ b/net/mac80211/chan.c @@ -388,7 +388,7 @@ ieee80211_find_chanctx(struct ieee80211_local *local, return NULL; } -static bool ieee80211_is_radar_required(struct ieee80211_local *local) +bool ieee80211_is_radar_required(struct ieee80211_local *local) { struct ieee80211_sub_if_data *sdata; @@ -567,7 +567,7 @@ static void ieee80211_recalc_radar_chanctx(struct ieee80211_local *local, bool radar_enabled; lockdep_assert_held(&local->chanctx_mtx); - /* for setting local->radar_detect_enabled */ + /* for ieee80211_is_radar_required */ lockdep_assert_held(&local->mtx); radar_enabled = ieee80211_is_radar_required(local); @@ -576,7 +576,6 @@ static void ieee80211_recalc_radar_chanctx(struct ieee80211_local *local, return; chanctx->conf.radar_enabled = radar_enabled; - local->radar_detect_enabled = chanctx->conf.radar_enabled; if (!local->use_chanctx) { local->hw.conf.radar_enabled = chanctx->conf.radar_enabled; diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index 91878ef5069a..156ea79e0157 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -1168,8 +1168,6 @@ struct ieee80211_local { /* wowlan is enabled -- don't reconfig on resume */ bool wowlan; - /* DFS/radar detection is enabled */ - bool radar_detect_enabled; struct work_struct radar_detected_work; /* number of RX chains the hardware has */ @@ -1982,6 +1980,7 @@ void ieee80211_recalc_smps_chanctx(struct ieee80211_local *local, struct ieee80211_chanctx *chanctx); void ieee80211_recalc_chanctx_min_def(struct ieee80211_local *local, struct ieee80211_chanctx *ctx); +bool ieee80211_is_radar_required(struct ieee80211_local *local); void ieee80211_dfs_cac_timer(unsigned long data); void ieee80211_dfs_cac_timer_work(struct work_struct *work); diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c index 844fb5f7910e..b0320bb20ab8 100644 --- a/net/mac80211/scan.c +++ b/net/mac80211/scan.c @@ -432,7 +432,7 @@ static int ieee80211_start_sw_scan(struct ieee80211_local *local, static bool ieee80211_can_scan(struct ieee80211_local *local, struct ieee80211_sub_if_data *sdata) { - if (local->radar_detect_enabled) + if (ieee80211_is_radar_required(local)) return false; if (!list_empty(&local->roc_list)) -- 2.30.2