'\" t
.\"     Title: dev_forward_skb
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: January 2017
.\"    Manual: Network device support
.\"    Source: Kernel Hackers Manual 4.8.15
.\"  Language: English
.\"
.TH "DEV_FORWARD_SKB" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "Network device support"
.\" -----------------------------------------------------------------
.\" * 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"
dev_forward_skb \- loopback an skb to another netif
.SH "SYNOPSIS"
.HP \w'int\ dev_forward_skb('u
.BI "int dev_forward_skb(struct\ net_device\ *\ " "dev" ", struct\ sk_buff\ *\ " "skb" ");"
.SH "ARGUMENTS"
.PP
\fIdev\fR
.RS 4
destination network device
.RE
.PP
\fIskb\fR
.RS 4
buffer to forward
.RE
.SH "DESCRIPTION"
.PP
return values: NET_RX_SUCCESS (no congestion) NET_RX_DROP (packet was dropped, but freed)
.PP
dev_forward_skb can be used for injecting an skb from the start_xmit function of one device into the receive queue of another device\&.
.PP
The receiving device may be in another namespace, so we have to clear all information in the skb that could impact namespace isolation\&.
.SH "COPYRIGHT"
.br