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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 <arikx.nemtsov@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Arik Nemtsov 2015-05-07 15:30:41 +03:00 committed by Johannes Berg
parent 96a4688edb
commit 890b7878e4
1 changed files with 8 additions and 19 deletions
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27
net/mac80211/tdls.c
View File

@ -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();