From 890b7878e4435518c45d80c5e33c335aab39d4e2 Mon Sep 17 00:00:00 2001 From: Arik Nemtsov Date: Thu, 7 May 2015 15:30:41 +0300 Subject: [PATCH] mac80211: TDLS: use the BSS chandef for HT/VHT operation IEs The chandef of the current channel context might be wider (though compatible). The TDLS link cares only about the channel of the BSS. In addition make sure to specify the VHT operation IE when VHT is supported on a non-2.4GHz band, as required by IEEE802.11ac-2013. This is not the same as HT-operation, to be specified only if the BSS doesn't support HT. Signed-off-by: Arik Nemtsov Reviewed-by: Johannes Berg Signed-off-by: Johannes Berg --- net/mac80211/tdls.c | 27 ++++++++------------------- 1 file changed, 8 insertions(+), 19 deletions(-) diff --git a/net/mac80211/tdls.c b/net/mac80211/tdls.c index fff0d864adfa..8a92a920ff17 100644 --- a/net/mac80211/tdls.c +++ b/net/mac80211/tdls.c @@ -527,30 +527,19 @@ ieee80211_tdls_add_setup_cfm_ies(struct ieee80211_sub_if_data *sdata, /* if HT support is only added in TDLS, we need an HT-operation IE */ if (!ap_sta->sta.ht_cap.ht_supported && sta->sta.ht_cap.ht_supported) { - struct ieee80211_chanctx_conf *chanctx_conf = - rcu_dereference(sdata->vif.chanctx_conf); - if (!WARN_ON(!chanctx_conf)) { - pos = skb_put(skb, 2 + - sizeof(struct ieee80211_ht_operation)); - /* send an empty HT operation IE */ - ieee80211_ie_build_ht_oper(pos, &sta->sta.ht_cap, - &chanctx_conf->def, 0); - } + pos = skb_put(skb, 2 + sizeof(struct ieee80211_ht_operation)); + /* send an empty HT operation IE */ + ieee80211_ie_build_ht_oper(pos, &sta->sta.ht_cap, + &sdata->vif.bss_conf.chandef, 0); } ieee80211_tdls_add_link_ie(sdata, skb, peer, initiator); /* only include VHT-operation if not on the 2.4GHz band */ - if (band != IEEE80211_BAND_2GHZ && !ap_sta->sta.vht_cap.vht_supported && - sta->sta.vht_cap.vht_supported) { - struct ieee80211_chanctx_conf *chanctx_conf = - rcu_dereference(sdata->vif.chanctx_conf); - if (!WARN_ON(!chanctx_conf)) { - pos = skb_put(skb, 2 + - sizeof(struct ieee80211_vht_operation)); - ieee80211_ie_build_vht_oper(pos, &sta->sta.vht_cap, - &chanctx_conf->def); - } + if (band != IEEE80211_BAND_2GHZ && sta->sta.vht_cap.vht_supported) { + pos = skb_put(skb, 2 + sizeof(struct ieee80211_vht_operation)); + ieee80211_ie_build_vht_oper(pos, &sta->sta.vht_cap, + &sdata->vif.bss_conf.chandef); } rcu_read_unlock(); -- 2.20.1