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authorThomas Pedersen <thomas@cozybit.com>2012-04-26 15:01:07 -0700
committerJohn W. Linville <linville@tuxdriver.com>2012-05-08 21:53:42 -0400
commitc7d258288f2ad11eaa9656f6f9f48272a102fd1b (patch)
tree6519a204dab75b0983c88dda228d25e45bd531c0 /net/mac80211
parente87278e730b11e9852fe0fe967908ef5a4e6e6a0 (diff)
mac80211: don't transmit 40MHz frames to 20MHz peer
If a mesh peer indicates it is operating as 20MHz-only in its HT operation IE, have the rate control algorithm respect this by disabling the equivalent bit in the ieee80211_sta HT capabilities. Signed-off-by: Thomas Pedersen <thomas@cozybit.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net/mac80211')
-rw-r--r--net/mac80211/mesh_plink.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/net/mac80211/mesh_plink.c b/net/mac80211/mesh_plink.c
index f4124d7c556c..6209327840f7 100644
--- a/net/mac80211/mesh_plink.c
+++ b/net/mac80211/mesh_plink.c
@@ -302,6 +302,12 @@ static struct sta_info *mesh_peer_init(struct ieee80211_sub_if_data *sdata,
else
memset(&sta->sta.ht_cap, 0, sizeof(sta->sta.ht_cap));
+ if (elems->ht_operation)
+ if (!(elems->ht_operation->ht_param &
+ IEEE80211_HT_PARAM_CHAN_WIDTH_ANY))
+ sta->sta.ht_cap.cap &=
+ ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;
+
rate_control_rate_init(sta);
spin_unlock_bh(&sta->lock);