Hi, I have looked through the individual hardware drivers, but there seems to be no way of getting an accurate time when an individual packet preamble hits the antenna. For RX, most drivers support a RX timestamp based on the TSF and put this into struct ieee80211_rx_status -> mactime. For TX, I found nothing related. Kind regards, Stefan -- Stefan Brüns / Bergstraße 21 / 52062 Aachen home: +49 241 53809034 mobile: +49 151 50412019 -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html