From: Manfred Rudigier
Date: Fri, 9 Apr 2010 11:10:35 +0200
> If a packet has the skb_shared_tx->hardware flag set the device is
> instructed to generate a TX timestamp and write it back to memory after
> the frame is transmitted. During the clean_tx_ring operation the
> timestamp will be extract
If a packet has the skb_shared_tx->hardware flag set the device is
instructed to generate a TX timestamp and write it back to memory after
the frame is transmitted. During the clean_tx_ring operation the
timestamp will be extracted and copied into the skb_shared_hwtstamps
struct of the skb.
TX tim
