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authorEliad Peller <eliad@wizery.com>2015-01-07 17:50:10 +0200
committerJohannes Berg <johannes.berg@intel.com>2015-01-14 09:37:06 +0100
commite7f2337ae70e0cdaac577c5a4823775097d0e9e7 (patch)
treed525b02d7e4b9c16ad2b5cf9ab3b38153cb255ef /net/mac80211/chan.c
parent5cbc95a749c5f3b238af0953881edede9bfe5bf6 (diff)
downloadlinux-sh-e7f2337ae70e0cdaac577c5a4823775097d0e9e7.tar.gz
mac80211: consider only relevant vifs for radar_required calculation
ctx->conf.radar_enabled should reflect whether radar detection is enabled for the channel context. When calculating it, make it consider only the vifs that have this context assigned (instead of all the vifs). Signed-off-by: Eliad Peller <eliad@wizery.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/mac80211/chan.c')
-rw-r--r--net/mac80211/chan.c32
1 files changed, 30 insertions, 2 deletions
diff --git a/net/mac80211/chan.c b/net/mac80211/chan.c
index 92c721dbd5af..35b11e11e0c4 100644
--- a/net/mac80211/chan.c
+++ b/net/mac80211/chan.c
@@ -406,6 +406,34 @@ bool ieee80211_is_radar_required(struct ieee80211_local *local)
return false;
}
+static bool
+ieee80211_chanctx_radar_required(struct ieee80211_local *local,
+ struct ieee80211_chanctx *ctx)
+{
+ struct ieee80211_chanctx_conf *conf = &ctx->conf;
+ struct ieee80211_sub_if_data *sdata;
+ bool required = false;
+
+ lockdep_assert_held(&local->chanctx_mtx);
+ lockdep_assert_held(&local->mtx);
+
+ rcu_read_lock();
+ list_for_each_entry_rcu(sdata, &local->interfaces, list) {
+ if (!ieee80211_sdata_running(sdata))
+ continue;
+ if (rcu_access_pointer(sdata->vif.chanctx_conf) != conf)
+ continue;
+ if (!sdata->radar_required)
+ continue;
+
+ required = true;
+ break;
+ }
+ rcu_read_unlock();
+
+ return required;
+}
+
static struct ieee80211_chanctx *
ieee80211_alloc_chanctx(struct ieee80211_local *local,
const struct cfg80211_chan_def *chandef,
@@ -425,7 +453,7 @@ ieee80211_alloc_chanctx(struct ieee80211_local *local,
ctx->conf.rx_chains_static = 1;
ctx->conf.rx_chains_dynamic = 1;
ctx->mode = mode;
- ctx->conf.radar_enabled = ieee80211_is_radar_required(local);
+ ctx->conf.radar_enabled = false;
ieee80211_recalc_chanctx_min_def(local, ctx);
return ctx;
@@ -570,7 +598,7 @@ static void ieee80211_recalc_radar_chanctx(struct ieee80211_local *local,
/* for ieee80211_is_radar_required */
lockdep_assert_held(&local->mtx);
- radar_enabled = ieee80211_is_radar_required(local);
+ radar_enabled = ieee80211_chanctx_radar_required(local, chanctx);
if (radar_enabled == chanctx->conf.radar_enabled)
return;