No, I am really looking for packet data, but perhaps packet metadata a la DLT_IEEE802_11_RADIO. As a first step, I want the data source labeled, so I can know if I have queueing delays or not. The point of tapping at tx complete is that you can find out how many retries were used and what the actual rate for that packet was (sometimes an 802.11 interface will drop back to 1 Mb/s after failing