OpenWrt – Rev 3

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

. /lib/functions/system.sh
. /lib/functions/uci-defaults.sh

board_config_update

board=$(board_name)

case "$board" in
tenda,ac9)
        ucidef_add_switch "switch0" \
                "1:lan" "2:lan" "3:lan" "4:lan" "8@eth0" "0:wan" "5@eth1"
        board_config_flush
        exit 0
        ;;
buffalo,wxr-1900dhp| \
buffalo,wzr-1750dhp)
        ucidef_add_switch "switch0" \
                "0:lan:1" "1:lan:2" "2:lan:3" "3:lan:4" "4:wan:5" "5@eth0"
        board_config_flush
        exit 0
        ;;
esac

wan_macaddr="$(nvram get wan_hwaddr)"
case "$board" in
asus,rt-ac87u)
        ifname=eth1
        etXmacaddr=$(nvram get et1macaddr)
        ;;
dlink,dir-885l | \
netgear,r7900 | \
netgear,r8000 | \
netgear,r8500)
        ifname=eth2
        etXmacaddr=$(nvram get et2macaddr)
        ;;
*)
        ifname=eth0
        etXmacaddr=$(nvram get et0macaddr)
        ;;
esac

# If WAN MAC isn't explicitly set, calculate it using base MAC as reference.
[ -z "$wan_macaddr" -a -n "$etXmacaddr" ] && wan_macaddr=$(macaddr_add "$etXmacaddr" 1)

# Workaround for devices using eth2 connected to (CPU) switch port 8
case "$board" in
dlink,dir-885l | \
netgear,r7900 | \
netgear,r8000 | \
netgear,r8500)
        ifname=eth0
        ucidef_add_switch "switch0" \
                "0:lan" "1:lan" "2:lan" "3:lan" "4:wan" "5t@$ifname"

        # These devices should use eth2 so their eth0 interface often has no MAC
        # assigned. Manually assign eth2's MAC to the LAN.
        et2macaddr="$(nvram get et2macaddr)"
        [ -n "$et2macaddr" ] && ucidef_set_interface_macaddr "lan" "$et2macaddr"
        [ -n "$wan_macaddr" ] && ucidef_set_interface_macaddr "wan" "$wan_macaddr"

        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

[ -n "$wan_macaddr" ] && ucidef_set_interface_macaddr "wan" "$wan_macaddr"

board_config_flush

exit 0