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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
program /sbin/ifconfig /bin/ifconfig
# If you do not have sysfs, you MUST have this binary instead for ioctl
# Also you will loose some functionality that cannot be done via sysfs:
if [ ! -d /sys/class/net ]; then
program /sbin/ifenslave
fi
}
_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_${IFVAR}
eval subsume="\$subsume_${IFVAR}"
unset subsume_${IFVAR}
[ -z "${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
if [ ! -d /sys/class/net ]; then
ewarn "sysfs is not available! You will be unable to create new bonds, or change dynamic parameters!"
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 & link monitoring, then we can reloop to ensure
# we configure all other options
# mode needs to be done before all other options.
# miimon needs to be done BEFORE downdelay
[ -d /sys/class/net ] && for n in mode miimon; do
x=/sys/class/net/"${IFACE}"/bonding/$n
[ -f "${x}" ] || continue
eval s=\$${n}_${IFVAR}
if [ -n "${s}" ]; then
einfo "Setting ${n}: ${s}"
echo "${s}" >"${x}" || \
eerror "Failed to configure $n (${n}_${IFVAR})"
fi
done
# Nice and dynamic for remaining options:)
[ -d /sys/class/net ] && for x in /sys/class/net/"${IFACE}"/bonding/*; do
[ -f "${x}" ] || continue
n=${x##*/}
eval s=\$${n}_${IFVAR}
# skip mode and miimon
[ "${n}" == "mode" -o "${n}" == "miimon" ] && continue
if [ -n "${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 ${slaves}; do
_exists true || return 1
done
# Unless we are subsuming an existing interface (NFS root), we down
# slave interfaces to work around bugs supposedly in some chipsets
# that cause failure to enslave from other states.
if [ -z "${subsume}" ]; then
for IFACE in ${slaves}; do
_delete_addresses
_down
done
fi
)
# Now force the master to up
# - First test for interface subsume request (required for NFS root)
if [ -n "${subsume}" ]; then
einfo "Subsuming ${subsume} interface characteristics."
eindent
local oiface=${IFACE}
IFACE=${subsume}
local addr="$(_get_inet_address)"
einfo "address: ${addr}"
IFACE=${oiface}
unset oiface
eoutdent
# subsume (presumably kernel auto-)configured IP
ifconfig ${IFACE} ${addr} up
else
# warn if root on nfs and no subsume interface supplied
local root_fs_type=$(mountinfo -s /)
if [ "${root_fs_type}" = "nfs" ]; then
warn_nfs=1
ewarn "NFS root detected!!!"
ewarn " If your system crashes here, /etc/conf.d/net needs"
ewarn " subsume_${IFACE}=\"<iface>\" ... where <iface> is the"
ewarn " existing, (usually kernel auto-)configured interface."
fi
# up the interface
_up
fi
# 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/"${IFACE}"/bonding
local oiface
oiface=$IFACE
if [ -n "${primary}" ]; then
IFACE=$primary
_down
IFACE=$oiface
echo "+${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
IFACE=$oiface
echo "+${s}" >$sys_bonding_path/slaves
fi
done
else
ifenslave "${IFACE}" ${slaves} >/dev/null
fi
eend $?
return 0 #important
}
bonding_stop()
{
_is_bond || return 0
# Wipe subsumed interface
if [ -n "${subsume}" ]; then
ifconfig ${subsume} 0.0.0.0
fi
local slaves= s=
slaves=$( \
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/"${IFACE}"/bonding/slaves
done
else
ifenslave -d "${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
}
|
