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tapsetup: add capability to enable forwarding for bridge

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This commit is contained in:
Martine S. Lenders 2020-09-01 17:26:15 +02:00
parent a9722dda71
commit 0abe581e3e
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GPG Key ID: CCD317364F63286F
1 changed files with 36 additions and 0 deletions
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36
dist/tools/tapsetup/tapsetup vendored
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@ -6,6 +6,7 @@ COMMAND=""
BRNAME="tapbr0"
TAPNAME="tap"
DEACTIVATE_IPV6=""
ENABLE_FORWARDING=0
UPLINK=""
usage() {
@ -20,6 +21,8 @@ usage() {
echo " -l <iface>, --list <iface>: If <iface> belongs to a bridge, list the bridge and" >&2
echo " all interfaces that belong to it. If <iface> does " >&2
echo" not belong to a bridge, just print <iface>." >&2
echo " -f, --forwarding Enable forwarding system-wide on creation and " >&2
echo " disable on deletion." >&2
echo " -b <name>, --bridge <name>: Give name for the bridge (default: tapbr)" >&2
echo " -t <name>, --tap <name>: Name base for the tap interfaces; the" >&2
echo " generated names will be <name>x" >&2
@ -46,6 +49,20 @@ update_uplink() {
fi
}
activate_forwarding() {
if [ ${ENABLE_FORWARDING} -eq 1 ]; then
case "${PLATFORM}" in
FreeBSD|OSX)
sysctl -w net.inet.ip.forwarding=1 || exit 1 ;;
Linux)
sysctl -w net.ipv6.conf.${BRNAME}.forwarding=1 || exit 1
sysctl -w net.ipv6.conf.${BRNAME}.accept_ra=0 || exit 1
sysctl -w net.ipv6.conf.all.forwarding=1 || exit 1 ;;
*) ;;
esac
fi
}
create_bridge() {
echo "creating bridge ${BRNAME}"
@ -85,6 +102,20 @@ up_bridge() {
esac
}
deactivate_forwarding() {
if [ ${ENABLE_FORWARDING} -eq 1 ]; then
case "${PLATFORM}" in
FreeBSD|OSX)
sysctl -w net.inet.ip.forwarding=0 || exit 1 ;;
Linux)
sysctl -w net.ipv6.conf.${BRNAME}.forwarding=0 || exit 1
sysctl -w net.ipv6.conf.${BRNAME}.accept_ra=1 || exit 1
sysctl -w net.ipv6.conf.all.forwarding=0 || exit 1 ;;
*) ;;
esac
fi
}
delete_bridge() {
echo "deleting ${BRNAME}"
@ -232,6 +263,9 @@ while true ; do
fi
COMMAND="delete"
shift ;;
-f|--forwarding)
ENABLE_FORWARDING=1
shift ;;
-l|--list)
if [ -n "${COMMAND}" ]; then
usage
@ -308,9 +342,11 @@ if [ "${COMMAND}" = 'create' ]; then
create_tap || exit 1
done
activate_forwarding || exit 1
up_bridge || exit 1
elif [ "${COMMAND}" = 'delete' ]; then
deactivate_forwarding || exit 1
delete_bridge
elif [ "${COMMAND}" = 'list' ]; then
list_bridge $(get_master "$BRNAME")