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#!/bin/bash
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# Copyright (c) 2004-2005 Gentoo Foundation
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# Distributed under the terms of the GNU General Public License v2
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# Contributed by Roy Marples (uberlord@gentoo.org)
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# char* bonding_provides(void)
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#
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# Returns a string to change module definition for starting up
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bonding_provides() {
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echo "bonding"
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}
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# void bonding_depend(void)
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#
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# Sets up the dependancies for the module
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bonding_depend() {
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after interface
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before vlan dhcp apipa
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}
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# bool bonding_check_installed(void)
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#
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# Returns 1 if ifenslave is installed, otherwise 0
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bonding_check_installed() {
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[[ -x /sbin/ifenslave ]] && return 0
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${1:-false} && eerror "For link aggregation (bonding) support, emerge net-misc/ifenslave"
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return 1
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}
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# bool bonding_check_depends(void)
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#
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# Checks to see if we have the needed functions
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bonding_check_depends() {
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local f
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for f in interface_exists interface_up interface_down interface_del_addresses; do
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[[ $( type -t "${f}" ) == "function" ]] && continue
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eerror "bonding: missing required function ${f}\n"
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return 1
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done
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return 0
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}
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# bool bonding_post_start(char *iface)
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#
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# Bonds the interface
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bonding_pre_start() {
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local iface="$1" slaves s ifvar=$( bash_variable "$1" )
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eval slaves=\"\$\{slaves_${ifvar}\[@\]\}\"
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[[ -z ${slaves} ]] && return 0
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interface_exists "${iface}" true || return 1
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if [[ ! -f "/proc/net/bonding/${iface}" ]]; then
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eerror "${iface} is not capable of bonding"
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return 1
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fi
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ebegin "Adding slaves to ${iface}"
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eindent
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einfo "${slaves}"
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# Check that our slaves exist
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for s in ${slaves}; do
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interface_exists "${s}" && continue
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ewarn "interface ${s} does not exist"
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return 1
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done
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# Must force the slaves to a particular state before adding them
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for s in ${slaves}; do
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interface_del_addresses "${s}"
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interface_up "${s}"
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done
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# now force the master to up
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interface_up "${iface}"
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# finally add in slaves
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eoutdent
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/sbin/ifenslave "${iface}" ${slaves} >/dev/null
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eend $?
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return 0 #important
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}
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# bool bonding_pre_stop(void)
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# Unbonds bonded interfaces
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#
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# Always returns 0 (true)
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bonding_pre_stop() {
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local iface="$1" slaves s
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bonding_check_installed || return 0
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# return silently if this is not a bonding interface
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[[ ! -f "/proc/net/bonding/${iface}" ]] && return 0
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# don't trust the config, get the active list instead
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slaves=$( sed -n -e 's/^Slave Interface: //p' "/proc/net/bonding/${iface}" )
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[[ -z ${slaves} ]] && return 0
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# remove all slaves
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ebegin "Removing slaves from ${iface}"
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eindent
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einfo "${slaves}"
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eoutdent
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/sbin/ifenslave -d "${iface}" ${slaves} &>${devnull}
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# reset all slaves
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for s in ${slaves}; do
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if interface_exists "${s}" ; then
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interface_del_addresses "${s}"
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interface_down "${s}"
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fi
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done
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eend 0
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return 0
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}
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# vim:ts=4
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