'\" t
.\"     Title: __alloc_skb
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: March 2017
.\"    Manual: Linux Networking
.\"    Source: Kernel Hackers Manual 4.10.7
.\"  Language: English
.\"
.TH "__ALLOC_SKB" "9" "March 2017" "Kernel Hackers Manual 4\&.10\&" "Linux Networking"
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.SH "NAME"
__alloc_skb \- allocate a network buffer
.SH "SYNOPSIS"
.HP \w'struct\ sk_buff\ *\ __alloc_skb('u
.BI "struct sk_buff * __alloc_skb(unsigned\ int\ " "size" ", gfp_t\ " "gfp_mask" ", int\ " "flags" ", int\ " "node" ");"
.SH "ARGUMENTS"
.PP
\fIsize\fR
.RS 4
size to allocate
.RE
.PP
\fIgfp_mask\fR
.RS 4
allocation mask
.RE
.PP
\fIflags\fR
.RS 4
If SKB_ALLOC_FCLONE is set, allocate from fclone cache instead of head cache and allocate a cloned (child) skb\&. If SKB_ALLOC_RX is set, __GFP_MEMALLOC will be used for allocations in case the data is required for writeback
.RE
.PP
\fInode\fR
.RS 4
numa node to allocate memory on
.RE
.SH "DESCRIPTION"
.PP
Allocate a new
sk_buff\&. The returned buffer has no headroom and a tail room of at least size bytes\&. The object has a reference count of one\&. The return is the buffer\&. On a failure the return is
\fBNULL\fR\&.
.PP
Buffers may only be allocated from interrupts using a
\fIgfp_mask\fR
of
\fBGFP_ATOMIC\fR\&.
.SH "COPYRIGHT"
.br