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# Copyright (c) 2007-2008 Roy Marples <roy@marples.name>
# Released under the 2-clause BSD license.
bonding_depend()
{
before interface macchanger
}
_config_vars="$_config_vars slaves"
_is_bond()
{
[ -f "/proc/net/bonding/${IFACE}" ]
}
bonding_pre_start()
{
local x= s= n= slaves= primary=
slaves="$(_get_array "slaves_${IFVAR}")"
unset slaves_${IFVAR}
eval primary="\$primary_${IFVAR}"
unset primary_${IFVAR}
[ -z "${slaves}" ] && return 0
# Load the kernel module if required
if [ ! -d /proc/net/bonding ]; then
if ! modprobe bonding; then
eerror "Cannot load the bonding module"
return 1
fi
fi
# We can create the interface name we like now, but this
# requires sysfs
if ! _exists && [ -d /sys/class/net ]; then
echo "+${IFACE}" > /sys/class/net/bonding_masters
fi
_exists true || return 1
if ! _is_bond; then
eerror "${IFACE} is not capable of bonding"
return 1
fi
# Interface must be down in order to configure
_down
# Configure the bond mode, then we can reloop to ensure we configure
# All other options
for x in /sys/class/net/"${IFACE}"/bonding/mode; do
[ -f "${x}" ] || continue
n=${x##*/}
eval s=\$${n}_${IFVAR}
if [ -n "${s}" ]; then
einfo "Setting ${n}: ${s}"
echo "${s}" >"${x}" || \
eerror "Failed to configure $n (${n}_${IFVAR})"
fi
done
# Nice and dynamic for remaining options:)
for x in /sys/class/net/"${IFACE}"/bonding/*; do
[ -f "${x}" ] || continue
n=${x##*/}
eval s=\$${n}_${IFVAR}
[ "${n}" != "mode" ] || continue
if [ -n "${s}" ]; then
einfo "Setting ${n}: ${s}"
echo "${s}" >"${x}" || \
eerror "Failed to configure $n (${n}_${IFVAR})"
fi
done
ebegin "Adding slaves to ${IFACE}"
eindent
einfo "${slaves}"
# Check that our slaves exist
(
for IFACE in ${slaves}; do
_exists true || return 1
done
# Must force the slaves to a particular state before adding them
for IFACE in ${slaves}; do
_delete_addresses
_down
done
)
# now force the master to up
_up
# finally add in slaves
# things needed in the process, and if they are done by ifenslave, openrc, and/or the kernel.
# down new slave interface: ifenslave, openrc
# set mtu: ifenslave, kernel
# set slave MAC: ifenslave, kernel
eoutdent
if [ -d /sys/class/net ]; then
sys_bonding_path=/sys/class/net/"${IFACE}"/bonding
if [ -n "${primary}" ]; then
IFACE=$primary _down
echo "+${primary}" >$sys_bonding_path/slaves
echo "${primary}" >$sys_bonding_path/primary
fi
for s in ${slaves}; do
[ "${s}" = "${primary}" ] && continue
if ! grep -q ${s} $sys_bonding_path/slaves; then
IFACE=$s _down
echo "+${s}" >$sys_bonding_path/slaves
fi
done
else
/sbin/ifenslave "${IFACE}" ${slaves} >/dev/null
fi
eend $?
return 0 #important
}
bonding_stop()
{
_is_bond || return 0
local slaves= s=
slaves=$( \
sed -n -e 's/^Slave Interface: //p' "/proc/net/bonding/${IFACE}" \
| tr '\n' ' ' \
)
[ -z "${slaves}" ] && return 0
# remove all slaves
ebegin "Removing slaves from ${IFACE}"
eindent
einfo "${slaves}"
eoutdent
if [ -d /sys/class/net ]; then
for s in ${slaves}; do
echo -"${s}" > /sys/class/net/"${IFACE}"/bonding/slaves
done
else
/sbin/ifenslave -d "${IFACE}" ${slaves}
fi
# reset all slaves
(
for IFACE in ${slaves}; do
if _exists; then
_delete_addresses
_down
fi
done
)
_down
if [ -d /sys/class/net ]; then
echo "-${IFACE}" > /sys/class/net/bonding_masters
fi
eend 0
return 0
}
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