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#!/bin/sh |
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# |
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# This file is part of the FreeWRT project. FreeWRT is copyrighted |
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# material, please see the LICENCE file in the top-level directory |
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# or at http://www.freewrt.org/licence for details. |
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# |
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# Christian Fischer <spaetzle@freewrt.org> |
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# |
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|
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IFACE_LOGICAL=1 |
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|
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iface_type() { |
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if [[ $MODE = start ]]; then |
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[[ -n $IF_BRIDGE_IFACES ]] |
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return |
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fi |
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bridge_exists |
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} |
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|
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bridge_ifaces() { |
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brctl show 2>&- | \ |
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sed -n -e "/^${IFACE}[[:space:]]/,/^\S/{ /^\(${IFACE}[[:space:]]\|[[:space:]]\)/s/^.*[[:space:]]//p }" |
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} |
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|
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bridge_exists() { |
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[[ $IFACE = $(brctl show 2>&- | sed -n -e "/^${IFACE}/ { s/[[:space:]].*//gp }") ]] |
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} |
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|
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bridge_depup() { |
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for IF in $IF_BRIDGE_IFACES; do |
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# is it up? |
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is_up $IF || ifup $IF || continue |
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# up now, add it to the list |
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ifacelist="$ifacelist $IF" |
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done |
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} |
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|
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bridge_addif() { |
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local err |
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for IF in $ifacelist; do |
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madd $IF |
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err=$(brctl addif $IFACE $IF 2>&1 1>&-) |
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mstate $? && continue |
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merr $err |
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done |
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} |
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|
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bridge_delif() { |
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local err retval=0 |
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for IF in $(bridge_ifaces); do |
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mremove $IF |
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err=$(brctl delif $IFACE $IF 2>&1 1>&-) |
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mstate $? || { merr $err; continue;} |
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# remove bridge ends without assigned ip |
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ip a | grep inet | grep -q $IF && continue |
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ifdown $IF |
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done |
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} |
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|
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bridge_create() { |
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local err |
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mcreate |
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err=$(brctl addbr $IFACE 2>&1 1>&-) |
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mstate $? && return |
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merr $err |
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return 1 |
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} |
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|
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bridge_destroy() { |
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local err |
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mdestroy |
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err=$(brctl delbr $IFACE 2>&1 1>&-) |
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mstate $? && return |
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merr $err |
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return 1 |
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} |
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|
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prereq_preup() { |
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if ! [[ -x $(whence -p brctl) ]]; then |
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mcreate |
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mstate 1 |
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merr "brctl not found" |
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return 1 |
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fi |
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|
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iface_exists || return 0 |
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|
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mcreate |
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mstate 1 |
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if bridge_exists; then |
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merr "Interface already created" |
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return 1 |
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fi |
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merr "Interface of this name already created" |
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return 1 |
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} |
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|
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prereq_down() { |
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bridge_exists && return |
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mdestroy |
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mstate 1 |
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merr "No such device" |
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return 1 |
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} |
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|
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if_preup() { |
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bridge_create || return |
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bridge_depup |
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bridge_addif |
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} |
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|
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if_up() { |
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# trigger bridge initialisation watchdog in ifupdown.sh |
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mkdir -p /tmp/ifupdown/ifstate/bridge |
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true >/tmp/ifupdown/ifstate/bridge/$IFACE |
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} |
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|
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if_postdown() { |
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bridge_delif |
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bridge_destroy |
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} |
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|
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# vim:ts=4 |
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