#!/bin/sh
#
# Format:
# bond=<bondname>[:<bondslaves>[:<options>[:<mtu>]]]
#
# bondslaves is a comma-separated list of physical (ethernet) interfaces
# options is a comma-separated list on bonding options (modinfo bonding for details) in format compatible with initscripts
# if options include multi-valued arp_ip_target option, then its values should be separated by semicolon.
#
# bond without parameters assumes bond=bond0:eth0,eth1:mode=balance-rr
#
# if the mtu is specified, it will be set on the bond master
#
# We translate list of slaves to space-separated here to make it easier to loop over them in ifup
# Ditto for bonding options
parsebond() {
local v=${1}:
set --
while [ -n "$v" ]; do
set -- "$@" "${v%%:*}"
v=${v#*:}
done
case $# in
0) bondname=bond0; bondslaves="eth0 eth1" ;;
1) bondname=$1; bondslaves="eth0 eth1" ;;
2) bondname=$1; bondslaves=$(str_replace "$2" "," " ") ;;
3) bondname=$1; bondslaves=$(str_replace "$2" "," " "); bondoptions=$(str_replace "$3" "," " ") ;;
4) bondname=$1; bondslaves=$(str_replace "$2" "," " "); bondoptions=$(str_replace "$3" "," " "); bondmtu=$4;;
*) die "bond= requires zero to four parameters" ;;
esac
}
# Parse bond for bondname, bondslaves, bondmode, bondoptions and bondmtu
for bond in $(getargs bond=); do
unset bondname
unset bondslaves
unset bondoptions
unset bondmtu
if [ "$bond" != "bond" ]; then
parsebond "$bond"
fi
# Simple default bond
if [ -z "$bondname" ]; then
bondname=bond0
bondslaves="eth0 eth1"
fi
# Make it suitable for initscripts export
bondoptions=$(str_replace "$bondoptions" ";" ",")
echo "bondname=$bondname" > /tmp/bond.${bondname}.info
echo "bondslaves=\"$bondslaves\"" >> /tmp/bond.${bondname}.info
echo "bondoptions=\"$bondoptions\"" >> /tmp/bond.${bondname}.info
echo "bondmtu=\"$bondmtu\"" >> /tmp/bond.${bondname}.info
done
