'\" t
.\"     Title: skb_copy
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: June 2017
.\"    Manual: Linux Networking
.\"    Source: Kernel Hackers Manual 4.11.3
.\"  Language: English
.\"
.TH "SKB_COPY" "9" "June 2017" "Kernel Hackers Manual 4\&.11\&" "Linux Networking"
.\" -----------------------------------------------------------------
.\" * Define some portability stuff
.\" -----------------------------------------------------------------
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.\" http://bugs.debian.org/507673
.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.ie \n(.g .ds Aq \(aq
.el       .ds Aq '
.\" -----------------------------------------------------------------
.\" * set default formatting
.\" -----------------------------------------------------------------
.\" disable hyphenation
.nh
.\" disable justification (adjust text to left margin only)
.ad l
.\" -----------------------------------------------------------------
.\" * MAIN CONTENT STARTS HERE *
.\" -----------------------------------------------------------------
.SH "NAME"
skb_copy \- create private copy of an sk_buff
.SH "SYNOPSIS"
.HP \w'struct\ sk_buff\ *\ skb_copy('u
.BI "struct sk_buff * skb_copy(const\ struct\ sk_buff\ *\ " "skb" ", gfp_t\ " "gfp_mask" ");"
.SH "ARGUMENTS"
.PP
\fIconst struct sk_buff * skb\fR
.RS 4
buffer to copy
.RE
.PP
\fIgfp_t gfp_mask\fR
.RS 4
allocation priority
.RE
.SH "DESCRIPTION"
.PP
Make a copy of both an &sk_buff and its data\&. This is used when the caller wishes to modify the data and needs a private copy of the data to alter\&. Returns
\fBNULL\fR
on failure or the pointer to the buffer on success\&. The returned buffer has a reference count of 1\&.
.PP
As by\-product this function converts non\-linear &sk_buff to linear one, so that &sk_buff becomes completely private and caller is allowed to modify all the data of returned buffer\&. This means that this function is not recommended for use in circumstances when only header is going to be modified\&. Use
\fBpskb_copy\fR
instead\&.
.SH "COPYRIGHT"
.br