[PATCH 3.10 16/85] mac80211: fix association to 20/40 MHz VHT networks

[Greg Kroah-Hartman]

3.10-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Johannes Berg <johannes.berg@xxxxxxxxx>

commit cb664981607a6b5b3d670ad57bbda893b2528d96 upstream.

When a VHT network uses 20 or 40 MHz as per the HT operation
information, the channel center frequency segment 0 field in
the VHT operation information is reserved, so ignore it.

This fixes association with such networks when the AP puts 0
into the field, previously we'd disconnect due to an invalid
channel with the message
wlan0: AP VHT information is invalid, disable VHT

Fixes: f2d9d270c15ae ("mac80211: support VHT association")
Reported-by: Tim Nelson <tim.l.nelson@xxxxxxxxx>
Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 net/mac80211/mlme.c |    1 +
 1 file changed, 1 insertion(+)

--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -310,6 +310,7 @@ ieee80211_determine_chantype(struct ieee
 	switch (vht_oper->chan_width) {
 	case IEEE80211_VHT_CHANWIDTH_USE_HT:
 		vht_chandef.width = chandef->width;
+		vht_chandef.center_freq1 = chandef->center_freq1;
 		break;
 	case IEEE80211_VHT_CHANWIDTH_80MHZ:
 		vht_chandef.width = NL80211_CHAN_WIDTH_80;


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