#!/bin/sh 
# IBM(c) 2013 EPL license http://www.eclipse.org/legal/epl-v10.html

# xCAT post script for configuring ib adaptors.
# Work for both IPv4 and IPv6
# The following are a sample of the env used:
# NIC_IBNICS=ib0,ib1
# NIC_IBAPORTS=1 (or 2)
# OSVER=sles11.1
# NICNODE=dxm360m4n04 
# NICIPS='eth0!10.1.34.242,ib1!15.0.1.242,ib2!15.0.2.242'
# NICHOSTNAMESUFFIXES='eth1!-eth1,ib1!-ib1,ib2!-ib2'
# NICTYPES='eth1!ethernet,ib1!infiniband,ib2!infiniband'
# NICNETWORKS='eth0!10_1_0_0-255_255_255_0,ib1!ib1,ib2!ib2'
# NETWORKS_LINES=3
# NETWORKS_LINE1='netname=10_1_0_0-255_255_255_0||net=10.1.0.0||mask=255.255.255.0||mgtifname=eth1||gateway=<xcatmaster>||dhcpserver=10.1.0.205||tftpserver=10.1.0.205||nameservers=||ntpservers=||logservers=||dynamicrange=||staticrange=||staticrangeincrement=||nodehostname=||ddnsdomain=||vlanid=||domain=||disable=||comments='
# NETWORKS_LINE2='netname=ib1||net=15.0.1.0||mask=255.255.255.0||mgtifname=||gateway=15.0.1.254||dhcpserver=||tftpserver=||nameservers=||ntpservers=||logservers=||dynamicrange=||staticrange=||staticrangeincrement=||nodehostname=||ddnsdomain=||vlanid=||domain=||disable=||comments='
# NETWORKS_LINE3='netname=ib3||net=15.0.3.0||mask=255.255.255.0||mgtifname=||gateway=||dhcpserver=||tftpserver=||nameservers=||ntpservers=||logservers=||dynamicrange=||staticrange=||staticrangeincrement=||nodehostname=||ddnsdomain=||vlanid=||domain=||disable=||comments='


#This is the number of ports for each ib adpator.
portnum=1
if [ -n "$NIC_IBAPORTS" ]; then
    portnum=$NIC_IBAPORTS
fi

# pmatch determines if 1st argument string is matched by 2nd argument pattern
pmatch ()
{
  case $1 in
    $2) return 0;;  # zero return code means string matched by pattern
  esac

  return 1          # non-zero return code means string not matched by pattern
}

convert_netmask_to_cidr() {
    let cidrnum=0
    OLFIFS=$IFS
    IFS=.
    for x in $1
    do
        case $x in
            255) cidrnum=$(expr $cidrnum + 8);;
            254) cidrnum=$(expr $cidrnum + 7);;
            252) cidrnum=$(expr $cidrnum + 6);;
            248) cidrnum=$(expr $cidrnum + 5);;
            240) cidrnum=$(expr $cidrnum + 4);;
            224) cidrnum=$(expr $cidrnum + 3);;
            192) cidrnum=$(expr $cidrnum + 2);;
            128) cidrnum=$(expr $cidrnum + 1);;
            0);;
        esac
    done
    IFS=$OLDIFS
    echo $cidrnum
}
 

if [ -z "$NIC_IBNICS" ]; then
    echo "nothing to do."
fi


#find correct IB driver
PLTFRM=`uname`
if [[ $OSVER == rhels5*  || "$OSVER" == rhels6* ]]
then
    ib_driver="rdma"
    /sbin/service $ib_driver status
    if [ $? -eq 1 ]
    then
        ib_driver="openibd"
        /sbin/service $ib_driver status
        if [ $? -eq 1 ]
        then
            echo "Not found the driver dameon: rdma or openibd"
        logger -p local4.info -t xcat "Not found the driver dameon: rdma or openibd"
            exit
        fi
    fi   
else
    ib_driver="openibd"
fi

#make changes to the confiuration file
if [ $PLTFRM == "Linux" ]
then
    if [ -f "/etc/rdma/rdma.conf" ]
    then
        sed -i "s/SDP_LOAD=yes/SDP_LOAD=no/g" /etc/rdma/rdma.conf
    elif [ -f "/etc/infiniband/openib.conf" ]
    then
        sed -i "s/SDP_LOAD=yes/SDP_LOAD=no/g" /etc/infiniband/openib.conf
    fi

    if [ -f "/etc/modprobe.conf" ]
    then
    if [ "$portnum" == "1" ]; then
            sed -i "/options ib_ehca nr_ports/d" /etc/modprobe.conf
            echo 'options ib_ehca nr_ports=1' >> /etc/modprobe.conf
    else
            sed -i "/options ib_ehca nr_ports=1/d" /etc/modprobe.conf
    fi
        sed -i "/options ib_ehca lock_hcalls/d" /etc/modprobe.conf
        echo 'options ib_ehca lock_hcalls=0' >> /etc/modprobe.conf
    fi
    /sbin/chkconfig --level 2345 $ib_driver on
    /sbin/service $ib_driver restart
    sysctl -p
fi

#clean up existing ib nic configrations
if [ $PLTFRM == "Linux" ]
then
    if [ -f /etc/redhat-release ]
    then
        OS_name="redhat"
    elif [ -f /etc/SuSE-release ]
    then
        OS_name="suse"
    else
        echo "Unsupported to config IB on this OS!"
        logger -p local4.info -t xcat "Unsupported to config IB on this OS!"
        exit
     fi
 
    if [ $OS_name == 'suse' ]
    then
         dir="/etc/sysconfig/network"
    else
         dir="/etc/sysconfig/network-scripts"
    fi
    for nic in `echo "$NIC_IBNICS" | tr "," "\n"`
    do     
    `rm -f $dir/ifcfg-$nic` 2>&1 1>/dev/null
    # nic aliases
    `rm -f $dir/ifcfg-$nic:*` 2>&1 1>/dev/null
    done
else
    for nic in `echo "$NIC_IBNICS" | tr "," "\n"`
    do     
    `rmdev -d -l $nic >/dev/null 2>&1`
    done
fi


goodnics=""
for nic in `echo "$NIC_IBNICS" | tr "," "\n"`
do 
    #Get nic ips 
    nicips=""
    for tmp in `echo "$NICIPS" | tr "," "\n"`
    do
        nic_tmp=`echo "$tmp" | awk -F"!" '{print $1}'`;
            if [ $nic_tmp == $nic ]; then
            # nicips=ip1|ip2|ip3
            nicips=`echo "$tmp" | awk -F"!" '{print $2}'`;
            break
        fi
    done
   # echo "nic=$nic, nicip=$nicip"
    
   #get nic networks name
   nicnets=""
   for tmp in `echo "$NICNETWORKS" | tr "," "\n"`
   do
       nic_tmp=`echo "$tmp" | awk -F"!" '{print $1}'`;
       if [ $nic_tmp == $nic ]; then
          # nicnets=net1|net2|net3
          nicnets=`echo "$tmp" | awk -F"!" '{print $2}'`;
          break
       fi
   done
   #echo "nic=$nic, nicnet=$nicnet"
   
   if [ -z "$nicnets" ]; then
       echo "No network defined for $nic"
       logger -p local4.info -t xcat "No network defined for $nic"
       continue
   fi   

   ipindex=0
   for nicip in `echo $nicips | tr "|" "\n"`
   do
       ipindex=`expr $ipindex + 1`
       nicnet=`echo $nicnets | cut -d '|' -f$ipindex`

       #get netmask and gateway
       index=0;
       found=0
       while [ $index -lt $NETWORKS_LINES ]
       do
           index=$((index+1))
           eval netline=\$NETWORKS_LINE$index
           if [[ -n "$netline" ]]; then
               for tmp in `echo "$netline" | tr "\|" "\n"`
               do
                   key=`echo "$tmp" | awk -F"=" '{print $1}'`;
                   case $key in
                   netname)
                       netname=`echo "$tmp" | awk -F"=" '{print $2}'`
                       if [ "$netname" != "$nicnet" ];
                       then
                           break;
                       fi
                   ;;
                  net)  
                      net=`echo "$tmp" | awk -F"=" '{print $2}'`
                  ;;
                  mask) 
                       netmask=`echo "$tmp" | awk -F"=" '{print $2}'`
                       # remove the prefix "/" from ipv6 mask
                       if echo $netmask | grep "/" 2>&1 1>/dev/null
                       then
                           netmask=`echo $netmask | awk -F'/' '{print $2}'`
                       fi
                  ;; 
                  gateway) 
                       gateway=`echo "$tmp" | awk -F"=" '{print $2}'`
                       found=1
                  ;;
                 esac 
                 if [ $found -eq 1 ]; then
                    break;
                 fi
              done # end for tmp in `echo "$netline" | tr "\|" "\n"`
              if [ $found -eq 1 ]; then
                  break;
              fi
          fi # end if [[ -n "$netline" ]]
       done # end  while [ $index -lt $NETWORKS_LINES ]

       #echo "found=$found"
       #echo "index=$index netname=$nicnet net=$net mask=$netmask gateway=$gateway"

       # Setup goodnics list
       if [ "$found" == "0" ]; then
           echo "Cannot find network $nicnet for $nic"
           logger -p local4.info -t xcat "Cannot find network $nicnet for $nic"
           continue
       else
           if [ -z "$goodnics" ]; then
               goodnics=$nic
           else
               goodnics="$goodnics,$nic"
           fi
       fi

       #there should be only one gateway on a node and that should go through the to the xcat management node and would be set up from the install nic. Anything else should be a route
       if [ "$gateway" == "<xcatmaster>" ]; then
           gateway=''
       fi

   
       if [ $PLTFRM == "Linux" ]
       then
           # Issue openibd for Linux at boot time
       
           if [ -f /etc/sysctl.conf ]
           then
               sed -i "/net.ipv4.conf.$nic.arp_filter=1/d" /etc/sysctl.conf 2>&1 1>/dev/null
               sed -i "/net.ipv4.conf.$nic.arp_ignore=1/d" /etc/sysctl.conf 2>&1 1>/dev/null
               cfg="net.ipv4.conf.$nic.arp_filter=1"
               grep "$cfg" /etc/sysctl.conf 2>&1 1>/dev/null
               if [ $? -ne 0 ]
               then
                   echo "net.ipv4.conf.$nic.arp_filter=1" >> /etc/sysctl.conf
               fi
               cfg="net.ipv4.conf.$nic.arp_ignore=1"
               grep "$cfg" /etc/sysctl.conf 2>&1 1>/dev/null
               if [ $? -ne 0 ]
               then
                   echo "net.ipv4.conf.$nic.arp_ignore=1" >> /etc/sysctl.conf
               fi
           fi
           
           if [ $OS_name == 'suse' ]
           then
               # First ip address 
               if [ $ipindex -eq 1 ]
               then
                   # Write the info to the ifcfg file
                   echo "DEVICE=$nic
BOOTPROTO=static
STARTMODE=onboot
IPADDR=$nicip" > $dir/ifcfg-$nic
                    # ipv6
                    if echo $nicip | grep : 2>&1 1>/dev/null
                    then
                        echo "PREFIXLEN=$netmask" >> $dir/ifcfg-$nic
                    else
                        echo "NETMASK=$netmask" >> $dir/ifcfg-$nic
                    fi
                   if [ -n "$gateway" ]; then
                       echo "GATEWAY=$gateway" >> $dir/ifcfg-$nic
                   fi
               else # not the first ip address
                   echo "LABEL_$ipindex=$ipindex
IPADDR_$ipindex=$nicip" >> $dir/ifcfg-$nic
                    # ipv6
                    if echo $nicip | grep : 2>&1 1>/dev/null
                    then
                        echo "PREFIXLEN_$ipindex=$netmask" >> $dir/ifcfg-$nic
                    else
                        echo "NETMASK_$ipindex=$netmask" >> $dir/ifcfg-$nic
                    fi
                fi # end if [ $ipindex -eq 1 ]
            elif [ $OS_name == 'redhat' ]
            then
               # First ip address 
               if [ $ipindex -eq 1 ]
               then
                   # Write the info to the ifcfg file
                   echo "DEVICE=$nic
BOOTPROTO=static
ONBOOT=yes
IPADDR=$nicip" > $dir/ifcfg-$nic
                    # ipv6
                    if echo $nicip | grep : 2>&1 1>/dev/null
                    then
                        echo "PREFIXLEN=$netmask" >> $dir/ifcfg-$nic
                    else
                        if [[ "$OSVER" == rhels6* ]]
                        then
                            #get prefix from netmask, this is for IPv4 only
                            prefix=24
                            prefix=$(convert_netmask_to_cidr $netmask)
                            echo "PREFIX=$prefix" >> $dir/ifcfg-$nic
                        else
                            echo "NETMASK=$netmask" >> $dir/ifcfg-$nic
                        fi
                    fi
                    if [ -n "$gateway" ]; then
                       echo "GATEWAY=$gateway" >> $dir/ifcfg-$nic
                    fi
               else # not the first ip address
                   # ipv6
                   if echo $nicip | grep : 2>&1 1>/dev/null
                   then
                       grep "IPV6INIT" $dir/ifcfg-$nic 2>&1 1>/dev/null
                       # The first ipv6 address
                       if [ $? -ne 0 ]
                       then
                           echo "IPV6INIT=yes
IPV6ADDR=$nicip/$netmask" >> $dir/ifcfg-$nic
                       else
                           echo "IPV6ADDR_SECONDARIES=$nicip/$netmask" >> $dir/ifcfg-$nic
                       fi
                    else # ipv4 address
                        echo "DEVICE=$nic:$ipindex
BOOTPROTO=static
ONBOOT=yes
IPADDR=$nicip" > $dir/ifcfg-$nic:$ipindex
                        if [[ "$OSVER" == rhels6* ]]
                        then
                            #get prefix from netmask, this is for IPv4 only
                            prefix=24
                            prefix=$(convert_netmask_to_cidr $netmask)
                            echo "PREFIX=$prefix" >> $dir/ifcfg-$nic:$ipindex
                        else
                            echo "NETMASK=$netmask" >> $dir/ifcfg-$nic:$ipindex
                        fi

                        if [ -n "$gateway" ]; then
                           echo "GATEWAY=$gateway" >> $dir/ifcfg-$nic:$ipindex
                        fi
                        # need to run ifup eth1:1 for RedHat
                        goodnics="$goodnics,$nic:$ipindex"
                    fi
                fi # end not the first ip address
            else
                echo "Unsupported operating system"
                logger -p local4.err -t xcat "Unsupported operating system"
            fi

       elif [ $PLTFRM == "AIX" ]; then
           if ( pmatch $nic "ml*" ); then #for ml* interface
           num=${nic##ml}
           mlt="mlt$num"
           #Check whether the mlt is available
           lsdev -C | grep $mlt | grep Available 2>&1 >/dev/null
           if [ $? -ne 0 ]
           then
               echo "$mltnum is not available."
               logger -p local4.info -t xcat "$mltnum is not available."
               continue
           fi
       
           #Check whether the ml0 is available
           lsdev -C | grep $nic 2>&1 >/dev/null
           if [ $? -ne 0 ]
           then
               cfgmgr 2>&1 >/dev/null
           fi
       
           chdev -l $nic -a state=detach 2>&1
           chdev -l $nic -a netaddr=$nicip -a netmask=$netmask -a state=up 2>&1
           else #assume it is ib*
               lsdev -C | grep icm | grep Available
               if [ $? -ne 0 ]
               then
                   mkdev -c management -s infiniband -t icm
                   if [ $? -ne 0 ]
                   then
                       mkdev -l icm
                       if [ $? -ne 0 ]
                       then
                           exit $?
                       fi
                   fi
                fi
       
               #Configure the IB interfaces.  Customize the port num.
               num=${nic##ib}   #this assumes that all the nics starts with 'ib'
               if [ "$portnum" == "1" ]; then 
                   iba_num=$num
                   ib_adapter="iba$iba_num"
                   port=1
               else
                   iba_num=`expr $num / 2`
                   ib_adapter="iba$iba_num"
                   if [ $(($num % 2)) == 0 ]
                   then
                       port=1
                   else
                       port=2
                   fi
               fi
               mkiba -a $nicip -i $nic -A $ib_adapter -p $port -P -1 -S up -m $netmask
           fi # end assume it is ib*
       fi # end if AIX
   done # end for nicip
done # end for nic

# echo "goodnics=$goodnics"
# Bringup all the ib interfaces
if [ $PLTFRM == "Linux" ]
then

    /sbin/service $ib_driver restart
    for nic in `echo "$goodnics" | tr "," "\n"`
    do     
        sleep 5
             
        if [[ "$OSVER" == rhels6* ]]
        then
            ip link set dev $nic up
        else 
            ifup $nic     
        fi
    done
fi