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Jörg Sommer d43c41fcaf runqemu-ifupdown/get-tapdevs: Add support for ip tuntap

The *ip* command supports the creation and destruction of TAP devices since
2009 and might be more likely installed on systems then *tunctl*. Therefore
it should be tried to setup or teardown the TAP interface with *ip* before
falling back to *tunctl*.

https://git.kernel.org/pub/scm/network/iproute2/iproute2.git/commit/?id=580fbd88f75cc9eea0d28a48c025b090eb9419a7

(From OE-Core rev: 424ede206baae1c228583aab1df6c18513ac104f)

Signed-off-by: Jörg Sommer <joerg.sommer@navimatix.de>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2023-06-13 22:10:32 +01:00

1.7 KiB

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#!/bin/bash

QEMU network configuration script to bring down tap devices. This

utility needs to be run as root, and will use the tunctl binary

from the native sysroot.

If you find yourself calling this script a lot, you can add the

the following to your /etc/sudoers file to be able to run this

command without entering your password each time:

ALL=NOPASSWD: /path/to/runqemu-ifup

ALL=NOPASSWD: /path/to/runqemu-ifdown

Copyright (c) 2006-2011 Linux Foundation

SPDX-License-Identifier: GPL-2.0-only

usage() { echo "sudo $(basename $0) " }

if [ $EUID -ne 0 ]; then echo "Error: This script (runqemu-ifdown) must be run with root privileges" exit 1 fi

if [ $# -ne 2 ]; then usage exit 1 fi

TAP=$1 STAGING_BINDIR_NATIVE=$2

if !ip tuntap del $TAP mode tap 2>/dev/null; then TUNCTL=$STAGING_BINDIR_NATIVE/tunctl if [ ! -e "$TUNCTL" ]; then echo "Error: Unable to find tunctl binary in '$STAGING_BINDIR_NATIVE', please bitbake qemu-helper-native" exit 1 fi

$TUNCTL -d $TAP

IFCONFIG=which ip 2> /dev/null if [ "x$IFCONFIG" = "x" ]; then # better than nothing... IFCONFIG=/sbin/ip fi if [ -x "$IFCONFIG" ]; then if $IFCONFIG link show $TAP > /dev/null 2>&1; then $IFCONFIG link del $TAP fi fi

cleanup the remaining iptables rules

IPTABLES=which iptables 2> /dev/null if [ "x$IPTABLES" = "x" ]; then IPTABLES=/sbin/iptables fi if [ ! -x "$IPTABLES" ]; then echo "$IPTABLES cannot be executed" exit 1 fi n=$[ (echo $TAP | sed 's/tap//' * 2) + 1 ] dest=$[ (echo $TAP | sed 's/tap//' * 2) + 2 ] $IPTABLES -D POSTROUTING -t nat -j MASQUERADE -s 192.168.7.$n/32 $IPTABLES -D POSTROUTING -t nat -j MASQUERADE -s 192.168.7.$dest/32 true

1.7 KiB Executable File Raw Blame History