Commit 4b559ec0 authored Mar 08, 2016 by Ilan Peer Committed by Johannes Berg Apr 05, 2016

mac80211: Fix BW upgrade for TDLS peers



It is possible that the station is connected to an AP
with bandwidth of 80+80MHz or 160MHz. In such cases
there is no need to perform an upgrade as the maximal
supported bandwidth is 80MHz.

In addition, when upgrading and setting center_freq1
and bandwidth to 80MHz also set center_freq2 to 0.

Fixes: 0fabfaaf ("mac80211: upgrade BW of TDLS peers when possible"
Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

parent facde7f3

net/mac80211/tdls.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -314,7 +314,7 @@ ieee80211_tdls_chandef_vht_upgrade(struct ieee80211_sub_if_data *sdata,
		if (max_width > NL80211_CHAN_WIDTH_80)
		max_width = NL80211_CHAN_WIDTH_80;

		if (uc.width == max_width)
		if (uc.width >= max_width)
		return;
		/*
		* Channel usage constrains in the IEEE802.11ac-2013 specification only
		@@ -325,6 +325,7 @@ ieee80211_tdls_chandef_vht_upgrade(struct ieee80211_sub_if_data *sdata,
		for (i = 0; i < ARRAY_SIZE(centers_80mhz); i++)
		if (abs(uc.chan->center_freq - centers_80mhz[i]) <= 30) {
		uc.center_freq1 = centers_80mhz[i];
		uc.center_freq2 = 0;
		uc.width = NL80211_CHAN_WIDTH_80;
		break;
		}

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