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On Tue, Mar 15, 2005 at 11:32:13PM +0100, Quentin Garnier wrote:
[...]
> FWIW, this afternoon when I could take a try at booting a domU, I used a
> modified vif-bridge script to do bridging by doing this:
>=20
> vif =3D [ 'mac=3Dlalala, bridge=3Dbridge:bridge0:fxp0' ]
>=20
> The meaning of the bridge parameter is the following:  first it starts
> with bridge to distinguish between plain ifconfig case and bridge case,
> then it bridges the vif interface with fxp0 on bridge0, creating it if
> necessary.  I'll send it tomorrow if you want.

Here it is.  Nothing complicated.  Arguably, the interface should be
removed from the bridge at down time.

--=20
Quentin Garnier - cube@cubidou.net - cube@NetBSD.org
"When I find the controls, I'll go where I like, I'll know where I want
to be, but maybe for now I'll stay right here on a silent sea."
KT Tunstall, Silent Sea, Eye to the Telescope, 2004.

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#!/bin/sh
#=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D
# /etc/xen/vif-bridge
#
# Script for configuring a vif.
# Xend calls a vif script when configuring a vif up or down.
# This script is the default - but it can be configured for each vif.
#
# Example invocation:
#
# vif-bridge up domain=3DVM1 vif=3Dvif1.0 bridge=3Dxen-br0 mac=3Daa:00:00:5=
0:02:f0
#
#
# Usage:
# vif-bridge (up|down) {VAR=3DVAL}*
#
# Vars:
#
# domain  name of the domain the interface is on (required).
# vif     vif interface name (required).
# mac     vif MAC address (required).
# bridge  bridge to add the vif to (required).
#
#=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D

# Exit if anything goes wrong
set -e

#this will be logged in xend-debug.log
echo "vif-bridge $*"

# Operation name.
OP=3D$1
shift

# Pull variables in args into environment
for arg ; do export "${arg}" ; done

# Required parameters. Fail if not set.
domain=3D${domain:?}
vif=3D${vif:?}
mac=3D${mac:?}
bridge=3D${bridge:?}

# Are we going up or down?
case $OP in
    up)
	# ${bridge} contains ifconfig parameters in our case.
	# It could also be parameters to brctl, or anything else we
	# want.
	# xend gives us vif?.? as interface name, but on NetBSD
	# they're called xvif?.?
	case ${bridge} in
	    bridge:*)
		bgparam=3D${bridge#bridge:}
		bgif=3D${bgparam%%:*}
		lanif=3D${bgparam##*:}
		if ! ifconfig -l | grep ${bgif} >/dev/null; then
			ifconfig ${bgif} create
			brconfig ${bgif} add ${lanif} up
		fi
		ifconfig x${vif} up
		brconfig ${bgif} add x${vif} up
		;;
	    *)
		ifconfig x${vif} ${bridge}
		;;
	esac
	exit 0

	;;
    down)	                                                                 =
                                                                           =
                                                      =20
	exit 0
	;;
    *)
	echo 'Invalid command: ' $OP
	echo 'Valid commands are: up, down'
	exit 1
	;;
esac

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