#!/bin/sh

# Check if are in the initramfs environment
if [ "$BOOT" = "local" ]; then
   # Get any iscsi command line parameters - cmdline parsing template taken from init script in initramfs
   for x in $(cat /proc/cmdline); do
      case $x in
            iscsi_ip=*)
               iscsi_ip=${x#iscsi_ip=}
               ;;
            iscsi_iqn=*)
               iscsi_iqn=${x#iscsi_iqn=}
               ;;
            iscsi_user=*)
               iscsi_user=${x#iscsi_user=}
               ;;
            iscsi_pw=*)
               iscsi_pw=${x#iscsi_pw=}
               ;;
      esac
   done # end of cmdline parsing
   if [ -n "${iscsi_ip}" ]; then
      iscsi_name='iqn.2000-09.org.local:UNKNOWN'
   fi

   # Check if an iscsi environment exists and start up the networking environment
   if [ -e /sys/firmware/ibft/target0/target-name -o -n "${iscsi_ip}" ]; then
      x=5
      # Wait up to x seconds for a network interface to pop up
      echo -n "Searching for network cards..."
      until ifconfig -a|grep -q Ethernet; do
         sleep 1
         echo -n .
         x=$(($x - 1))
         if [ $x = 0 ]; then
            echo "No network cards detected!"
            exit 0
         fi
      done # end of until
      echo "Searching for an dhcp server on all network interfaces..."
      CNT=5
      until ifconfig ${netdev}|grep -q "inet addr"; do
         for netdev in `ifconfig -a|grep Ethernet|cut -d' ' -f1`; do # Do a round-robin search for dhcp servers
            #ip link set ${netdev} mtu 2500                          # Optional: increase mtu for performance
            ip link set ${netdev} up                                 # try to bring up the interface
            ipconfig -t 2 -c dhcp -d ${netdev}                       # Get an IP
            if ifconfig -a|grep -q "inet addr"; then break 2; fi     # If we have got an address, stop searching.
         done # end of netdev probing
         CNT=$((${CNT} - 1))
         if [ ${CNT} = 0 ]; then
            echo "No dhcp servers found!"
            exit 0
         fi
         echo "Tries left: ${CNT}"
      done # end of until
      if [ -e /sys/firmware/ibft/target0/target-name ]; then
         #iscsistart -b  # This should get the ibft parameters but it does not yet.
         # Lets do the following instead
         iscsistart \
         -i `cat /sys/firmware/ibft/initiator/initiator-name` \
         -t `cat /sys/firmware/ibft/target0/target-name` \
         -a `cat /sys/firmware/ibft/target0/ip-addr` \
         -u `cat /sys/firmware/ibft/target0/chap-name` \
         -w `cat /sys/firmware/ibft/target0/chap-secret` \
         -g 1
      else
         iscsistart -i ${iscsi_name} -t ${iscsi_iqn} -a ${iscsi_ip} -u ${iscsi_user} -w ${iscsi_pw} -g 1
      fi # end of iscsi firmware check
   fi # end of iscsi env check
fi  # end of initramfs check