ifupdown-ng/executor-scripts/linux/link
Maximilian Wilhelm a6b95d495c link executor: Only gather and set IFACE_OPTIONS on up.
Signed-off-by: Maximilian Wilhelm <max@sdn.clinic>
2020-09-04 23:32:51 +02:00

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#!/bin/sh
set -e
[ -n "$VERBOSE" ] && set -x
is_vlan() {
case "$IFACE" in
*#*) return 1 ;;
*:*) return 1 ;;
vlan*.*) return 1 ;;
vlan*)
IF_VLAN_ID="${IFACE#vlan}"
[ -n "${IF_VLAN_RAW_DEVICE:-}" ] && return 0
return 1
;;
*.*)
IF_VLAN_RAW_DEVICE="${IFACE%.*}"
IF_VLAN_ID="${IFACE##*.}"
return 0
;;
*)
[ -z "${IF_VLAN_ID:-}" ] && return 1
[ -z "${IF_VLAN_RAW_DEVICE:-}" ] && return 1
return 0
;;
esac
}
case "$PHASE" in
pre-up)
if [ "${IF_LINK_TYPE}" = "dummy" ]; then
if [ -d "/sys/class/net/${IFACE}" ]; then
iface_type=$(ip -d link show dev "${IFACE}" | head -n3 | tail -n1 | awk '{ print $1 }')
if [ "${iface_type}" = 'dummy' ]; then
exit 0
fi
fi
ip link add "${IFACE}" type dummy
fi
if is_vlan; then
if [ -d "/sys/class/net/${IFACE}" ]; then
exit 0
fi
if [ -z "${MOCK}" ]; then
if [ ! -d "/sys/class/net/${IF_VLAN_RAW_DEVICE}" ]; then
echo "Underlay device ${IF_VLAN_RAW_DEVICE} for ${IFACE} does not exist"
exit 1
fi
if ! [ -d /proc/net/vlan ]; then
echo "Loading 8021q kernel module for VLAN support"
${MOCK} modprobe 8021q
fi
fi
${MOCK} ip link add link "${IF_VLAN_RAW_DEVICE}" name "${IFACE}" type vlan id "${IF_VLAN_ID}"
fi
;;
up)
IF_LINK_OPTIONS="$IF_LINK_OPTIONS"
[ -n "$IF_MTU" ] && IF_LINK_OPTIONS="$IF_LINK_OPTIONS mtu $IF_MTU"
[ -n "$IF_HWADDRESS" ] && IF_LINK_OPTIONS="$IF_LINK_OPTIONS address $IF_HWADDRESS"
${MOCK} ip link set up dev "${IFACE}" ${IF_LINK_OPTIONS}
# Set alias is configured
if [ "${IF_ALIAS}" ]; then
${MOCK} ip link set alias "${IF_ALIAS}" dev "${IFACE}"
fi
;;
down)
${MOCK} ip link set down dev "${IFACE}"
;;
post-down)
if [ "${IF_LINK_TYPE}" = "dummy" -o is_vlan ]; then
if [ -d "/sys/class/net/${IFACE}" ]; then
ip link del "${IFACE}"
fi
fi
;;
depend)
if is_vlan; then
echo "$IF_VLAN_RAW_DEVICE"
fi
;;
esac