#!/bin/sh
+Wait_for_carrier ()
+{
+ # $1 = network device
+ echo -n "Waiting for link to come up on $1... "
+ ip link set $1 up
+ for step in $(seq 1 15)
+ do
+ carrier=$(cat /sys/class/net/$1/carrier \
+ 2>/dev/null)
+ case "${carrier}" in
+ 1)
+ echo -e "\nLink is up"
+ return
+ ;;
+ *)
+ # Counter
+ echo -n "$step "
+ ;;
+ esac
+ sleep 1
+ done
+ echo -e "\nError - carrier not detected on $1."
+ ip link set $1 down
+}
+
Select_eth_device ()
{
# Boot type in initramfs's config
# we want to do some basic IP
modprobe -q af_packet
+ # Ensure all our net modules get loaded so we can actually compare MAC addresses...
+ udevadm trigger
+ udevadm settle
+
# Available Ethernet interfaces ?
l_interfaces=""
echo "Waiting for ethernet card(s) up... If this fails, maybe the ethernet card is not supported by the kernel `uname -r`?"
while [ -z "$l_interfaces" ]
do
- l_interfaces="$(cd /sys/class/net/ && ls -d eth* 2>/dev/null)"
+ l_interfaces="$(cd /sys/class/net/ && ls -d * 2>/dev/null | grep -v "lo")"
done
if [ $(echo $l_interfaces | wc -w) -lt 2 ]
then
# only one interface : no choice
echo "DEVICE=$l_interfaces" >> /conf/param.conf
+ Wait_for_carrier $l_interfaces
return
fi
NETDEV="${ARGUMENT#live-netdev=}"
echo "DEVICE=$NETDEV" >> /conf/param.conf
echo "Found live-netdev parameter, forcing to to use network device $NETDEV."
+ Wait_for_carrier $NETDEV
return
;;
esac
# ATTR{carrier} is not set if this is not done
echo -n " $interface ?"
ipconfig -c none -d $interface -t 1 >/dev/null 2>&1
+ sleep 1
done
echo ''
do
for interface in $l_interfaces
do
+ ip link set $interface up
carrier=$(cat /sys/class/net/$interface/carrier \
2>/dev/null)
# link detected
1)
echo "Connected $interface found"
# inform initrd's init script :
- found_eth_dev="$found_eth_dev $interface"
+ found_eth_dev="$interface"
;;
esac
done