centos man page for skb_tx_timestamp

SKB_TX_TIMESTAMP(9)						 Linux Networking					       SKB_TX_TIMESTAMP(9)

NAME
       skb_tx_timestamp - Driver hook for transmit timestamping

SYNOPSIS
       void skb_tx_timestamp(struct sk_buff * skb);

ARGUMENTS
       skb
	   A socket buffer.

DESCRIPTION
       Ethernet MAC Drivers should call this function in their hard_xmit function immediately before giving the sk_buff to the MAC hardware.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						       SKB_TX_TIMESTAMP(9)