| #!/bin/bash |
| |
| function ip2int { |
| local a b c d |
| { IFS=. read a b c d; } <<< $1 |
| echo $(((((((a << 8) | b) << 8) | c) << 8) | d)) |
| } |
| |
| function int2ip { |
| local ui32=$1; shift |
| local ip n |
| for n in 1 2 3 4; do |
| ip=$((ui32 & 0xff))${ip:+.}$ip |
| ui32=$((ui32 >> 8)) |
| done |
| echo $ip |
| } |
| |
| function netmask { |
| local mask=$((0xffffffff << (32 - $1))); shift |
| int2ip $mask |
| } |
| |
| function broadcast { |
| local addr=$(ip2int $1); shift |
| local mask=$((0xffffffff << (32 -$1))); shift |
| int2ip $((addr | ~mask)) |
| } |
| |
| function network { |
| local addr=$(ip2int $1); shift |
| local mask=$((0xffffffff << (32 -$1))); shift |
| int2ip $((addr & mask)) |
| } |
| |
| function first { |
| local addr=$(ip2int $1) |
| addr=`expr $addr + 1` |
| int2ip $addr |
| } |
| |
| function guess_type { |
| local CNT=$(echo "$1" | sed -e 's/[:.]/ /g' | wc -w) |
| if [ $CNT -ne 1 ]; then |
| # drop all sub and vlan interfaces |
| echo "DNC" |
| return |
| fi |
| local DRIVER=$(ethtool -i $1 2>/dev/null | grep driver | awk '{print $2}') |
| local RESULT="DNC" |
| case $DRIVER in |
| mlx4_en) |
| RESULT="MLX4_EN" |
| ;; |
| i40e) |
| RESULT="I40G" |
| ;; |
| igb|e1000|bnx2) |
| RESULT="ETH" |
| ;; |
| *) ;; |
| esac |
| echo $RESULT |
| } |
| |
| function get_mac { |
| echo $(ifconfig $1 | grep HWaddr | awk '{print $5}') |
| } |
| |
| function generate_persistent_names { |
| local OUT=$NAMES_FILE |
| #"70-persistent-net.rules" |
| rm -rf $OUT |
| |
| IDX=0 |
| # this will not support more than 10 fabric nics... should be ok. (Famous last words) |
| for i in $(cat $1 | sort); do |
| echo "SUBSYSTEM==\"net\", ACTION==\"add\", DRIVERS==\"?*\", ATTR{address}==\"$i\", ATTR{dev_id}==\"0x$IDX\", ATTR{type}==\"1\", KERNEL==\"*\", NAME=\"eth$IDX\"" >> $OUT |
| IDX=$(expr $IDX + 1) |
| done |
| |
| for i in $(cat $2 | sort); do |
| echo "SUBSYSTEM==\"net\", ACTION==\"add\", DRIVERS==\"?*\", ATTR{address}==\"$i\", NAME=\"eth$IDX\"" >> $OUT |
| IDX=$(expr $IDX + 1) |
| done |
| } |
| |
| # 40G_LIST ETH_LIST FAB_IFACE EXT_IFACE MGT_IFACE |
| function generate_interfaces { |
| OUT=$IFACES_FILE |
| rm -rf $OUT |
| echo "# This file describes the network interfaces available on your system" >> $OUT |
| echo "# and how to activate them. For more information, see interfaces(5)." >> $OUT |
| echo "" >> $OUT |
| echo "# The loopback network interface" >> $OUT |
| echo "auto lo" >> $OUT |
| echo "iface lo inet loopback" >> $OUT |
| echo "" >> $OUT |
| |
| IDX=0 |
| local CNT40=$(cat $1 | wc -w) |
| for i in $(cat $1); do |
| echo "auto eth$IDX" >> $OUT |
| echo "iface eth$IDX inet manual" >> $OUT |
| echo " bond-master $3" >> $OUT |
| [ -z $FIRST ] && echo " bond-primary eth$IDX" >> $OUT |
| FIRST="done" |
| echo "" >> $OUT |
| IDX=$(expr $IDX + 1) |
| done |
| |
| if [ $CNT40 -ne 0 ]; then |
| echo "auto $3" >> $OUT |
| echo "iface $3 inet static" >> $OUT |
| echo " address $FAB_IP" >> $OUT |
| echo " network $FAB_NETWORK" >> $OUT |
| echo " netmask $FAB_NETMASK" >> $OUT |
| # Make bond-mode configurable |
| echo " bond-mode active-backup" >> $OUT |
| echo " bond-miimon 100" >> $OUT |
| echo " bond-slaves none" >> $OUT |
| echo "" >> $OUT |
| fi |
| |
| local GRAB_FIRST=1 |
| for i in $(cat $2); do |
| if [ "eth$IDX" == "$4" ]; then |
| if [ "$EXT_IP" == "dhcp" ]; then |
| echo "auto eth$IDX" >> $OUT |
| echo "iface eth$IDX inet dhcp" >> $OUT |
| elif [ "$EXT_IP" == "manual" ]; then |
| echo "iface eth$IDX inet manual" >> $OUT |
| else |
| echo "auto eth$IDX" >> $OUT |
| echo "iface eth$IDX inet static" >> $OUT |
| echo " address $EXT_IP" >> $OUT |
| echo " network $EXT_NETWORK" >> $OUT |
| echo " netmask $EXT_NETMASK" >> $OUT |
| echo " broadcast $EXT_BROADCAST" >> $OUT |
| echo " gateway $EXT_GW" >> $OUT |
| echo " dns-nameservers 8.8.8.8 8.8.4.4" >> $OUT |
| echo " dns-search cord.lab" >> $OUT |
| fi |
| elif [ $GRAB_FIRST -eq 1 ]; then |
| echo "auto eth$IDX" >> $OUT |
| echo "iface eth$IDX inet dhcp" >> $OUT |
| GRAB_FIRST=0 |
| else |
| echo "iface eth$IDX inet manual" >> $OUT |
| fi |
| echo "" >> $OUT |
| IDX=$(expr $IDX + 1) |
| done |
| } |
| |
| FAB_IFACE=$1 |
| FAB_ADDR=$2 |
| FAB_IP=$(echo $FAB_ADDR | cut -d/ -f1) |
| FAB_MASKBITS=$(echo $FAB_ADDR | cut -d/ -f2) |
| FAB_NETWORK=$(network $FAB_IP $FAB_MASKBITS) |
| FAB_NETMASK=$(netmask $FAB_MASKBITS) |
| |
| EXT_IFACE=$3 |
| EXT_ADDR=$4 |
| if [ "$EXT_ADDR" != "dhcp" ]; then |
| EXT_IP=$(echo $EXT_ADDR | cut -d/ -f1) |
| EXT_MASKBITS=$(echo $EXT_ADDR | cut -d/ -f2) |
| EXT_NETWORK=$(network $EXT_IP $EXT_MASKBITS) |
| EXT_NETMASK=$(netmask $EXT_MASKBITS) |
| EXT_BROADCAST=$(broadcast $EXT_IP $EXT_MASKBITS) |
| EXT_GW=$(first $EXT_ADDR) |
| fi |
| MGT_IFACE=$5 |
| |
| LIST_ETH=$(mktemp -u) |
| LIST_40G=$(mktemp -u) |
| IFACES_FILE=$(mktemp -u) |
| NAMES_FILE=$(mktemp -u) |
| |
| IFACES=$(ifconfig -a | grep "^[a-z]" | awk '{print $1}') |
| |
| for i in $IFACES; do |
| TYPE=$(guess_type $i) |
| case $TYPE in |
| ETH) |
| echo "$(get_mac $i)" >> $LIST_ETH |
| ;; |
| I40G|MLX4_EN) |
| echo "$(get_mac $i)" >> $LIST_40G |
| ;; |
| *) ;; |
| esac |
| done |
| |
| CHANGED="false" |
| |
| generate_interfaces $LIST_40G $LIST_ETH $FAB_IFACE $EXT_IFACE $MGT_IFACE |
| |
| diff /etc/network/interfaces $IFACES_FILE 2>&1 > /dev/null |
| if [ $? -ne 0 ]; then |
| CHANGED="true" |
| cp /etc/network/interfaces /etc/network/interfaces.1 |
| cp $IFACES_FILE /etc/network/interfaces |
| fi |
| |
| generate_persistent_names $LIST_40G $LIST_ETH $FAB_IFACE $EXT_IFACE |
| if [ -r /etc/udev/rules.d/70-persistent-net.rules ]; then |
| diff /etc/udev/rules.d/70-persistent-net.rules $NAMES_FILE 2>&1 > /dev/null |
| if [ $? -ne 0 ]; then |
| CHANGED="true" |
| cp /etc/udev/rules.d/70-persistent-net.rules /etc/udev/rules.d/70-persistent-net.rules.1 |
| cp $NAMES_FILE /etc/udev/rules.d/70-persistent-net.rules |
| fi |
| else |
| CHANGED="true" |
| cp $NAMES_FILE /etc/udev/rules.d/70-persistent-net.rules |
| fi |
| |
| rm -rf $IFACES_FILE |
| rm -rf $NAMES_FILE |
| rm -rf $LIST_ETH |
| rm -rf $LIST_40G |
| |
| echo -n $CHANGED |