1 files changed, 120 insertions, 0 deletions
diff --git a/net-scripts/net.modules.d/bonding.sh b/net-scripts/net.modules.d/bonding.sh
new file mode 100644
index 0000000..6095c74
--- /dev/null
+++ b/net-scripts/net.modules.d/bonding.sh
@@ -0,0 +1,120 @@
+# Copyright (c) 2004-2006 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# Contributed by Roy Marples (uberlord@gentoo.org)
+
+# void bonding_depend(void)
+#
+# Sets up the dependancies for the module
+bonding_depend() {
+	before interface macchanger
+	functions interface_exists interface_up interface_down \
+		interface_del_addresses
+}
+
+# void bonding_expose(void)
+#
+# Expose variables that can be configured
+bonding_expose() {
+	variables slaves
+}
+
+# bool bonding_check_installed(void)
+#
+# Returns 0 if ifenslave is installed, otherwise 1
+bonding_check_installed() {
+	[[ -x /sbin/ifenslave ]] && return 0
+	${1:-false} && eerror "For link aggregation (bonding) support, emerge net-misc/ifenslave"
+	return 1
+}
+
+# bonding_exists(char *interface)
+#
+# Returns 0 if we are a bonded interface, otherwise 1
+bonding_exists() {
+	[[ -f "/proc/net/bonding/$1" ]]
+}
+
+# bool bonding_post_start(char *iface)
+#
+# Bonds the interface
+bonding_pre_start() {
+	local iface="$1" s ifvar="$(bash_variable "$1")"
+	local -a slaves
+
+	slaves="slaves_${ifvar}[@]"
+	[[ -z ${!slaves} ]] && return 0
+	slaves=( "${!slaves}" )
+
+	# Support space seperated slaves
+	[[ ${#slaves[@]} == 1 ]] && slaves=( ${slaves} )
+
+	interface_exists "${iface}" true || return 1
+
+	if ! bonding_exists "${iface}" ; then
+		eerror "${iface} is not capable of bonding"
+		return 1
+	fi
+
+	ebegin "Adding slaves to ${iface}"
+	eindent
+	einfo "${slaves[@]}"
+
+	# Check that our slaves exist
+	for s in "${slaves[@]}" ; do
+		interface_exists "${s}" true || return 1
+	done
+
+	# Must force the slaves to a particular state before adding them
+	for s in "${slaves[@]}" ; do
+		interface_del_addresses "${s}"
+		interface_up "${s}"
+	done
+
+	# now force the master to up
+	interface_up "${iface}"
+
+	# finally add in slaves
+	eoutdent
+	/sbin/ifenslave "${iface}" ${slaves[@]} >/dev/null
+	eend $?
+
+	return 0 #important
+}
+
+# bool bonding_stop(void)
+# Unbonds bonded interfaces
+#
+# Always returns 0 (true) 
+bonding_stop() {
+	local iface="$1" slaves s
+
+	# return silently if this is not a bonding interface
+	! bonding_exists "${iface}" && return 0
+
+	# don't trust the config, get the active list instead
+	slaves="$( \
+		sed -n -e 's/^Slave Interface: //p' "/proc/net/bonding/${iface}" \
+		| xargs \
+	)"
+	[[ -z ${slaves} ]] && return 0
+
+	# remove all slaves
+	ebegin "Removing slaves from ${iface}"
+	eindent
+	einfo "${slaves}"
+	eoutdent
+	/sbin/ifenslave -d "${iface}" ${slaves}
+
+	# reset all slaves
+	for s in ${slaves}; do
+		if interface_exists "${s}" ; then
+			interface_del_addresses "${s}"
+			interface_down "${s}"
+		fi
+	done
+
+	eend 0
+	return 0
+}
+
+# vim: set ft=sh ts=4 :