return
fi
- # If user force to use specific device, write it
- for ARGUMENT in ${LIVE_BOOT_CMDLINE}
- do
- case "${ARGUMENT}" in
- live-netdev=*)
- NETDEV="${ARGUMENT#live-netdev=}"
- echo "DEVICE=$NETDEV" >> /conf/param.conf
- echo "Found live-netdev parameter, forcing to to use network device $NETDEV."
- return
- ;;
- esac
- done
- else
- l_interfaces="$DEVICE"
- fi
+ # If user force to use specific device, write it
+ for ARGUMENT in ${LIVE_BOOT_CMDLINE}
+ do
+ case "${ARGUMENT}" in
+ live-netdev=*)
+ NETDEV="${ARGUMENT#live-netdev=}"
+ # net device could be specified by MAC address
+ hex="[0-9A-Fa-f][0-9A-Fa-f]"
+ case "${NETDEV}" in
+ ${hex}:${hex}:${hex}:${hex}:${hex}:${hex})
+ # MAC address; record it and select later
+ netdev_mac_addr="${NETDEV}"
+ ;;
+ *)
+ # interface name
+ echo "DEVICE=$NETDEV" >> /conf/param.conf
+ echo "Found live-netdev parameter, forcing to to use network device $NETDEV."
+ return
+ ;;
+ esac
+ ;;
+ esac
+ done
+ else
+ l_interfaces="$DEVICE"
+ fi
found_eth_dev=""
while true
echo ''
- for step in 1 2 3 4 5
- do
- for interface in $l_interfaces
- do
- carrier=$(cat /sys/class/net/$interface/carrier \
- 2>/dev/null)
- # link detected
+ for step in 1 2 3 4 5
+ do
+ for interface in $l_interfaces
+ do
+ if [ -z "$netdev_mac_addr" ]; then
+ carrier=$(cat /sys/class/net/$interface/carrier \
+ 2>/dev/null)
+ # link detected
- case "${carrier}" in
- 1)
- echo "Connected $interface found"
- # inform initrd's init script :
- found_eth_dev="$found_eth_dev $interface"
- ;;
- esac
- done
- if [ -n "$found_eth_dev" ]
- then
- echo "DEVICE='$found_eth_dev'" >> /conf/param.conf
- return
- else
- # wait a bit
- sleep 1
- fi
- done
- done
+ case "${carrier}" in
+ 1)
+ echo "Connected $interface found"
+ # inform initrd's init script :
+ found_eth_dev="$found_eth_dev $interface"
+ ;;
+ esac
+ else
+ # MAC addr given, check for that
+ mac_addr=$(ifconfig "$interface" \
+ | grep HWaddr \
+ | { read _ _ _ _ mac_addr; echo $mac_addr; })
+ if [ "$mac_addr" = "$netdev_mac_addr" ]; then
+ found_eth_dev="$interface"
+ fi
+ fi
+ done
+ if [ -n "$found_eth_dev" ]
+ then
+ echo "DEVICE='$found_eth_dev'" >> /conf/param.conf
+ return
+ else
+ # wait a bit
+ sleep 1
+ fi
+ done
+ done
}