Commit aa507a7b authored Mar 02, 2016 by Arik Nemtsov Committed by Johannes Berg Apr 05, 2016

mac80211: recalc min_def chanctx even when chandef is identical



The min_def chanctx is affected not only by the current chandef, but
sometimes also by other stations on the vif. There's a valid scenario
where a TDLS peer can widen its BW, thereby causing the min_def
to increase.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

parent 59021c67

net/mac80211/chan.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -343,8 +343,10 @@ static void ieee80211_change_chanctx(struct ieee80211_local *local,
		struct ieee80211_chanctx *ctx,
		const struct cfg80211_chan_def *chandef)
		{
		if (cfg80211_chandef_identical(&ctx->conf.def, chandef))
		if (cfg80211_chandef_identical(&ctx->conf.def, chandef)) {
		ieee80211_recalc_chanctx_min_def(local, ctx);
		return;
		}

		WARN_ON(!cfg80211_chandef_compatible(&ctx->conf.def, chandef));