From c7d258288f2ad11eaa9656f6f9f48272a102fd1b Mon Sep 17 00:00:00 2001 From: Thomas Pedersen Date: Thu, 26 Apr 2012 15:01:07 -0700 Subject: [PATCH] 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 Signed-off-by: John W. Linville --- net/mac80211/mesh_plink.c | 6 ++++++ 1 file changed, 6 insertions(+) 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); -- 2.20.1