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4aef53d50d
This bridge mode is supposed to be used for virtual environments to create a network zone as a bridge and have virtual machines inside it. Other physical interfaces can also be added to the bridge. This is very similar to the MACVTAP bridge feature but still works when the link of any (or all) physical interfaces is down. Fixes: #11252 Signed-off-by: Jonatan Schlag <jonatan.schlag@ipfire.org> Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
115 lines
3.5 KiB
Bash
115 lines
3.5 KiB
Bash
#!/bin/bash
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############################################################################
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# #
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# This file is part of the IPFire Firewall. #
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# #
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# IPFire is free software; you can redistribute it and/or modify #
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# it under the terms of the GNU General Public License as published by #
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# the Free Software Foundation; either version 2 of the License, or #
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# (at your option) any later version. #
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# #
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# IPFire is distributed in the hope that it will be useful, #
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# but WITHOUT ANY WARRANTY; without even the implied warranty of #
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
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# GNU General Public License for more details. #
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# #
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# You should have received a copy of the GNU General Public License #
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# along with IPFire; if not, write to the Free Software #
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA #
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# #
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# Copyright (C) 2016 IPFire Team <info@ipfire.org> #
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# #
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############################################################################
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[ -n "${INTERFACE}" ] || exit 2
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eval $(/usr/local/bin/readhash /var/ipfire/ethernet/settings)
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detect_zone() {
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local intf="${INTERFACE%0*}"
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intf="${intf^^}"
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local zone
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for zone in GREEN BLUE ORANGE RED; do
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# Try to find if INTERFACE is the *phys version of a zone
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if [ "${intf}" = "${zone}" ]; then
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echo "${zone}"
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return 0
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fi
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# Try to find out if this INTERFACE is a slave of a zone
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local slave
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for slave in $(get_value "${zone}_SLAVES"); do
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if [ "${INTERFACE}" = "${slave}" ]; then
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echo "${zone}"
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return 0
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fi
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done
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done
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return 1
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}
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get_value() {
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echo "${!1}"
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}
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random_mac_address() {
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local address="02"
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for i in $(seq 5); do
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printf -v address "${address}:%02x" "$(( RANDOM % 256 ))"
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done
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echo "${address}"
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}
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# Try to detect which zone we are operating on
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ZONE=$(detect_zone)
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# Cannot proceed if we could not find a zone
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if [ -z "${ZONE}" ]; then
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exit 0
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fi
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# Determine the mode of this zone
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MODE="$(get_value "${ZONE}_MODE")"
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# The name of the virtual bridge
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BRIDGE="$(get_value "${ZONE}_DEV")"
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case "${MODE}" in
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bridge)
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ADDRESS="$(get_value "${ZONE}_MACADDR")"
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[ -n "${ADDRESS}" ] || ADDRESS="$(random_mac_address)"
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# We need to create the bridge if it doesn't exist, yet
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if [ ! -d "/sys/class/net/${BRIDGE}" ]; then
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ip link add "${BRIDGE}" address "${ADDRESS}" type bridge
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#ip link set "${BRIDGE}" up
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fi
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# Attach the physical device
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ip link set dev "${INTERFACE}" master "${BRIDGE}"
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ip link set dev "${INTERFACE}" up
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;;
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macvtap)
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ADDRESS="$(</sys/class/net/${INTERFACE}/address)"
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GENERATED_ADDRESS=$(random_mac_address)
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ip link add link "${INTERFACE}" "${BRIDGE}" address "${ADDRESS}" type macvlan mode bridge
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ip link set "${INTERFACE}" address "${GENERATED_ADDRESS}"
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ip link set "${INTERFACE}" up
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;;
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"")
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exit 0
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;;
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*)
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logger -t "network" "Unhandled mode '${MODE}' for '${ZONE}' (${INTERFACE})"
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exit 1
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;;
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esac
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