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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: 0fabfaafec ("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>
This commit is contained in:
Ilan Peer 2016-03-08 13:35:31 +02:00 committed by Johannes Berg
parent facde7f332
commit 4b559ec0bf
1 changed files with 2 additions and 1 deletions
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3
net/mac80211/tdls.c
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@ -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;
}