'\" t
.\"     Title: skb_tx_timestamp
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: September 2017
.\"    Manual: Linux Networking
.\"    Source: Kernel Hackers Manual 4.12.13
.\"  Language: English
.\"
.TH "SKB_TX_TIMESTAMP" "9" "September 2017" "Kernel Hackers Manual 4\&.12\&" "Linux Networking"
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.SH "NAME"
skb_tx_timestamp \- Driver hook for transmit timestamping
.SH "SYNOPSIS"
.HP \w'void\ skb_tx_timestamp('u
.BI "void skb_tx_timestamp(struct\ sk_buff\ *\ " "skb" ");"
.SH "ARGUMENTS"
.PP
\fIstruct sk_buff * skb\fR
.RS 4
A socket buffer\&.
.RE
.SH "DESCRIPTION"
.PP
.PP
Ethernet MAC Drivers should call this function in their
\fBhard_xmit\fR
function immediately before giving the sk_buff to the MAC hardware\&.
.PP
Specifically, one should make absolutely sure that this function is called before TX completion of this packet can trigger\&. Otherwise the packet could potentially already be freed\&.
.SH "COPYRIGHT"
.br