add wireguard executor script

Makefile

@@ -84,7 +84,8 @@ EXECUTOR_SCRIPTS_OPT ?= \
 	bridge \
 	vrf \
 	tunnel \
-	gre
+	gre \
+	wireguard
 
 EXECUTOR_SCRIPTS ?= ${EXECUTOR_SCRIPTS_CORE} ${EXECUTOR_SCRIPTS_OPT}
 

executor-scripts/linux/wireguard

@@ -0,0 +1,16 @@
+#!/bin/sh
+
+set -e
+
+[ -n "$VERBOSE" ] && set -x
+[ -z "$IF_WIREGUARD_CONFIG_PATH" ] && IF_WIREGUARD_CONFIG_PATH="/etc/wireguard/$IFACE.conf"
+
+case "$PHASE" in
+pre-up)
+	${MOCK} ip link add $IFACE type wireguard
+	${MOCK} wg setconf $IFACE $IF_WIREGUARD_CONFIG_PATH
+	;;
+post-down)
+	${MOCK} ip link delete dev $IFACE
+	;;
+esac