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mac80211: fix VHT MCS calculation

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The VHT MCSes we advertise to the AP were supposed to
be restricted to the AP, but due to a bug in the logic
mac80211 will advertise rates to the AP that aren't
even supported by the local device. To fix this skip
any adjustment if the NSS isn't supported at all.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Johannes Berg 2013-03-01 17:33:18 +01:00
parent 7cbf9d017d
commit 24af717c35
1 changed files with 3 additions and 0 deletions
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3
net/mac80211/mlme.c
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@ -647,6 +647,9 @@ static void ieee80211_add_vht_ie(struct ieee80211_sub_if_data *sdata,
our_mcs = (le16_to_cpu(vht_cap.vht_mcs.rx_mcs_map) &
mask) >> shift;
if (our_mcs == IEEE80211_VHT_MCS_NOT_SUPPORTED)
continue;
switch (ap_mcs) {
default:
if (our_mcs <= ap_mcs)