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Diffstat (limited to 'recipes/bridge-utils/files/ifupdown.sh')
| -rw-r--r-- | recipes/bridge-utils/files/ifupdown.sh | 245 |
1 files changed, 245 insertions, 0 deletions
diff --git a/recipes/bridge-utils/files/ifupdown.sh b/recipes/bridge-utils/files/ifupdown.sh new file mode 100644 index 0000000000..a67ffcc1e3 --- /dev/null +++ b/recipes/bridge-utils/files/ifupdown.sh @@ -0,0 +1,245 @@ +#!/bin/sh + +# You don't usually need to touch this file at all, the full configuration +# of the bridge can be done in a standard way on /etc/network/interfaces. + +# Have a look at /usr/share/doc/bridge-utils/README.Debian if you want +# more info about the way on wich a bridge is set up on Debian. + +if [ ! -x /usr/sbin/brctl ] +then + exit 0 +fi + +case "$IF_BRIDGE_PORTS" in + "") + exit 0 + ;; + none) + INTERFACES="" + ;; + *) + INTERFACES="$IF_BRIDGE_PORTS" + ;; +esac + +# Previous work (create the interface) +if [ "$MODE" = "start" ] ; then + brctl addbr $IFACE || exit 1 +# Wait for the ports to become available + if [ "$IF_BRIDGE_WAITPORT" ] + then + set x $IF_BRIDGE_WAITPORT && + shift && + WAIT="$1" && + shift && + WAITPORT="$@" && + if [ -z "$WAITPORT" ];then WAITPORT="$IF_BRIDGE_PORTS";fi && + STARTTIME=$(date +%s) && + NOTFOUND="true" && + /bin/echo -e "\nWaiting for a max of $WAIT seconds for $WAITPORT to become available." && + while [ "$(($(date +%s)-$STARTTIME))" -le "$WAIT" ] && [ -n "$NOTFOUND" ] + do + NOTFOUND="" + for i in $WAITPORT + do + if ! grep -q "^[\ ]*$i:.*$" /proc/net/dev;then NOTFOUND="true";fi + done + if [ -n "$NOTFOUND" ];then sleep 1;fi + done + fi +# Previous work (stop the interface) +elif [ "$MODE" = "stop" ]; then + ifconfig $IFACE down || exit 1 +fi + +all_interfaces= && +unset all_interfaces && +set x $INTERFACES && +shift && +while [ x"${1+set}" = xset ] +do + # For compatibility: the `all' option. + case $1 in + all) + shift && + set regex eth.\* noregex "$@" + ;; + esac + + # Primitive state machine... + case $1-`uname -s` in + regex-Linux) + all_interfaces=`sed -n 's%^[\ ]*\([^:]*\):.*$%\1%p' < /proc/net/dev` + shift + ;; + regex-*) + echo -n "$0 needs to be ported for your `uname -s` system. " >&2 + echo "Trying to continue nevertheless." >&2 + shift + ;; + noregex-*) + all_interfaces= + unset all_interfaces + shift + ;; + esac + + case ${all_interfaces+regex}-${1+set} in + regex-set) + # The following interface specification are to be parsed as regular + # expressions against all interfaces the system provides. + i=`egrep "^$1$" << EOAI +$all_interfaces +EOAI +` + shift + ;; + *-set) + # Literal interfaces. + i=$1 + shift + ;; + *) + # No interface specification is following. + i= + ;; + esac + + for port in $i + do + # We attach and configure each port of the bridge + if [ "$MODE" = "start" ] ; then + if [ -x /etc/network/if-pre-up.d/vlan ]; then + env IFACE=$port /etc/network/if-pre-up.d/vlan + fi + if [ "$IF_BRIDGE_HW" ] + then + ifconfig $port down; ifconfig $port hw ether $IF_BRIDGE_HW + fi + brctl addif $IFACE $port && ifconfig $port 0.0.0.0 up + # We detach each port of the bridge + elif [ "$MODE" = "stop" ]; then + ifconfig $port down && brctl delif $IFACE $port && \ + if [ -x /etc/network/if-post-down.d/vlan ]; then + env IFACE=$port /etc/network/if-post-down.d/vlan + fi + fi + done +done + +# We finish setting up the bridge +if [ "$MODE" = "start" ] ; then + + if [ "$IF_BRIDGE_AGEING" ] + then + brctl setageing $IFACE $IF_BRIDGE_AGEING + fi + + if [ "$IF_BRIDGE_BRIDGEPRIO" ] + then + brctl setbridgeprio $IFACE $IF_BRIDGE_BRIDGEPRIO + fi + + if [ "$IF_BRIDGE_FD" ] + then + brctl setfd $IFACE $IF_BRIDGE_FD + fi + + if [ "$IF_BRIDGE_GCINT" ] + then + brctl setgcint $IFACE $IF_BRIDGE_GCINT + fi + + if [ "$IF_BRIDGE_HELLO" ] + then + brctl sethello $IFACE $IF_BRIDGE_HELLO + fi + + if [ "$IF_BRIDGE_MAXAGE" ] + then + brctl setmaxage $IFACE $IF_BRIDGE_MAXAGE + fi + + if [ "$IF_BRIDGE_PATHCOST" ] + then + brctl setpathcost $IFACE $IF_BRIDGE_PATHCOST + fi + + if [ "$IF_BRIDGE_PORTPRIO" ] + then + brctl setportprio $IFACE $IF_BRIDGE_PORTPRIO + fi + + if [ "$IF_BRIDGE_STP" ] + then + brctl stp $IFACE $IF_BRIDGE_STP + fi + + + # We activate the bridge + ifconfig $IFACE 0.0.0.0 up + + + # Calculate the maximum time to wait for the bridge to be ready + if [ "$IF_BRIDGE_MAXWAIT" ] + then + MAXWAIT=$IF_BRIDGE_MAXWAIT + else + MAXWAIT=$(brctl showstp $IFACE|sed -n 's/^.*forward delay[ \t]*\(.*\)\..*bridge forward delay[ \t]*\(.*\)\..*$/\1 \2/p') + if [ "$MAXWAIT" ] + then + if [ ${MAXWAIT% *} -gt ${MAXWAIT#* } ] + then + MAXWAIT=$((2*(${MAXWAIT% *}+1))) + else + MAXWAIT=$((2*(${MAXWAIT#* }+1))) + fi + else + if [ "$IF_BRIDGE_FD" ] + then + MAXWAIT=$((2*(${IF_BRIDGE_FD%.*}+1))) + else + MAXWAIT=32 + fi + /bin/echo -e "\nWaiting $MAXWAIT seconds for $IFACE to get ready." + sleep $MAXWAIT + MAXWAIT=0 + fi + fi + + # Wait for the bridge to be ready + if [ "$MAXWAIT" != 0 ] + then + /bin/echo -e "\nWaiting for $IFACE to get ready (MAXWAIT is $MAXWAIT seconds)." + + unset BREADY + unset TRANSITIONED + COUNT=0 + + while [ ! "$BREADY" -a $COUNT -lt $MAXWAIT ] + do + sleep 1 + COUNT=$(($COUNT+1)) + BREADY=true + for i in $(brctl showstp $IFACE|sed -n 's/^.*port id.*state[ \t]*\(.*\)$/\1/p') + do + if [ "$i" = "listening" -o "$i" = "learning" -o "$i" = "forwarding" -o "$i" = "blocking" ] + then + TRANSITIONED=true + fi + if [ "$i" != "forwarding" -a "$i" != "blocking" ] && [ ! "$TRANSITIONED" -o "$i" != "disabled" ] + then + unset BREADY + fi + done + done + + fi + +# Finally we destroy the interface +elif [ "$MODE" = "stop" ]; then + + brctl delbr $IFACE + +fi |