WLAN_RC_DS_FLAG
ath_rc_priv->ht_cap |= WLAN_RC_DS_FLAG;
(ath_rc_priv->ht_cap & WLAN_RC_DS_FLAG) ? 0 : 1;
if (WLAN_RC_PHY_DS(phy) && !(capflag & WLAN_RC_DS_FLAG))