openwrtv3/target/linux/bcm53xx/base-files/etc/board.d/02_network

#!/bin/sh
#
# Copyright (C) 2011 OpenWrt.org
#

. /lib/functions/uci-defaults.sh

board_config_update

board=$(cat /proc/device-tree/compatible | tr '\0' '\t' | cut -f 1)
case "$board" in
asus,rt-ac87u)
	ifname=eth1
	;;
netgear,r7900)
netgear,r8000)
netgear,r8500)
	ifname=eth2
	;;
*)
	ifname=eth0
	;;
esac

# Workaround for devices using eth2 connected to (CPU) switch port 8
case "$board" in
netgear,r7900)
netgear,r8000)
	ifname=eth0
	ucidef_add_switch "switch0" \
		"0:lan" "1:lan" "2:lan" "3:lan" "4:wan" "5t@$ifname"
	board_config_flush
	exit 0
	;;
esac

# NVRAM entries may contain unsorted ports, e.g. Netgear R6250 uses
# vlan1ports=3 2 1 0 5*
# vlan2ports=4 5u
# and early Netgear R8000 was using
# vlan1ports=3 2 1 0 5 7 8*
vlan1ports="$(echo $(nvram get vlan1ports | tr " " "\n" | sort))"
vlan2ports="$(echo $(nvram get vlan2ports | tr " " "\n" | sort))"
if echo "$vlan1ports" | egrep -q "^1 2 3 4 5" && \
   echo "$vlan2ports" | egrep -q "^0 5"; then
	ucidef_add_switch "switch0" \
		"1:lan" "2:lan" "3:lan" "4:lan" "0:wan" "5t@$ifname"
elif echo "$vlan1ports" | egrep -q "^1 2 3 5 7" && \
     echo "$vlan2ports" | egrep -q "^0 7"; then
	ucidef_add_switch "switch0" \
		"1:lan" "2:lan" "3:lan" "5:lan" "0:wan" "7t@$ifname"
elif echo "$vlan1ports" | egrep -q "^0 1 2 3 5 7 8" && \
     echo "$vlan2ports" | egrep -q "^4 8"; then
	ucidef_add_switch "switch0" \
		"0:lan" "1:lan" "2:lan" "3:lan" "5:lan" "7:lan" "4:wan" "8t@$ifname"
else
	ucidef_add_switch "switch0" \
		"0:lan" "1:lan" "2:lan" "3:lan" "4:wan" "5t@$ifname"
fi

board_config_flush

exit 0