lag_lib.sh

  1#!/bin/bash
  2# SPDX-License-Identifier: GPL-2.0
  3
  4NAMESPACES=""
  5
  6# Test that a link aggregation device (bonding, team) removes the hardware
  7# addresses that it adds on its underlying devices.
  8test_LAG_cleanup()
  9{
 10	local driver=$1
 11	local mode=$2
 12	local ucaddr="02:00:00:12:34:56"
 13	local addr6="fe80::78:9abc/64"
 14	local mcaddr="33:33:ff:78:9a:bc"
 15	local name
 16
 17	ip link add dummy1 type dummy
 18	ip link add dummy2 type dummy
 19	if [ "$driver" = "bonding" ]; then
 20		name="bond1"
 21		ip link add "$name" up type bond mode "$mode"
 22		ip link set dev dummy1 master "$name"
 23		ip link set dev dummy2 master "$name"
 24	elif [ "$driver" = "team" ]; then
 25		name="team0"
 26		teamd -d -c '
 27			{
 28				"device": "'"$name"'",
 29				"runner": {
 30					"name": "'"$mode"'"
 31				},
 32				"ports": {
 33					"dummy1":
 34						{},
 35					"dummy2":
 36						{}
 37				}
 38			}
 39		'
 40		ip link set dev "$name" up
 41	else
 42		check_err 1
 43		log_test test_LAG_cleanup ": unknown driver \"$driver\""
 44		return
 45	fi
 46
 47	# Used to test dev->uc handling
 48	ip link add mv0 link "$name" up address "$ucaddr" type macvlan
 49	# Used to test dev->mc handling
 50	ip address add "$addr6" dev "$name"
 51
 52	# Check that addresses were added as expected
 53	(grep_bridge_fdb "$ucaddr" bridge fdb show dev dummy1 ||
 54		grep_bridge_fdb "$ucaddr" bridge fdb show dev dummy2) >/dev/null
 55	check_err $? "macvlan unicast address not found on a slave"
 56
 57	# mcaddr is added asynchronously by addrconf_dad_work(), use busywait
 58	(busywait 10000 grep_bridge_fdb "$mcaddr" bridge fdb show dev dummy1 ||
 59		grep_bridge_fdb "$mcaddr" bridge fdb show dev dummy2) >/dev/null
 60	check_err $? "IPv6 solicited-node multicast mac address not found on a slave"
 61
 62	ip link set dev "$name" down
 63	ip link del "$name"
 64
 65	not grep_bridge_fdb "$ucaddr" bridge fdb show >/dev/null
 66	check_err $? "macvlan unicast address still present on a slave"
 67
 68	not grep_bridge_fdb "$mcaddr" bridge fdb show >/dev/null
 69	check_err $? "IPv6 solicited-node multicast mac address still present on a slave"
 70
 71	cleanup
 72
 73	log_test "$driver cleanup mode $mode"
 74}
 75
 76# Build a generic 2 node net namespace with 2 connections
 77# between the namespaces
 78#
 79#  +-----------+       +-----------+
 80#  | node1     |       | node2     |
 81#  |           |       |           |
 82#  |           |       |           |
 83#  |      eth0 +-------+ eth0      |
 84#  |           |       |           |
 85#  |      eth1 +-------+ eth1      |
 86#  |           |       |           |
 87#  +-----------+       +-----------+
 88lag_setup2x2()
 89{
 90	local state=${1:-down}
 91	local namespaces="lag_node1 lag_node2"
 92
 93	# create namespaces
 94	for n in ${namespaces}; do
 95		ip netns add ${n}
 96	done
 97
 98	# wire up namespaces
 99	ip link add name lag1 type veth peer name lag1-end
100	ip link set dev lag1 netns lag_node1 $state name eth0
101	ip link set dev lag1-end netns lag_node2 $state name eth0
102
103	ip link add name lag1 type veth peer name lag1-end
104	ip link set dev lag1 netns lag_node1 $state name eth1
105	ip link set dev lag1-end netns lag_node2 $state name eth1
106
107	NAMESPACES="${namespaces}"
108}
109
110# cleanup all lag related namespaces
111lag_cleanup()
112{
113	for n in ${NAMESPACES}; do
114		ip netns delete ${n} >/dev/null 2>&1 || true
115	done
116}
117
118SWITCH="lag_node1"
119CLIENT="lag_node2"
120CLIENTIP="172.20.2.1"
121SWITCHIP="172.20.2.2"
122
123lag_setup_network()
124{
125	lag_setup2x2 "down"
126
127	# create switch
128	ip netns exec ${SWITCH} ip link add br0 up type bridge
129	ip netns exec ${SWITCH} ip link set eth0 master br0 up
130	ip netns exec ${SWITCH} ip link set eth1 master br0 up
131	ip netns exec ${SWITCH} ip addr add ${SWITCHIP}/24 dev br0
132}
133
134lag_reset_network()
135{
136	ip netns exec ${CLIENT} ip link del bond0
137	ip netns exec ${SWITCH} ip link set eth0 up
138	ip netns exec ${SWITCH} ip link set eth1 up
139}
140
141create_bond()
142{
143	# create client
144	ip netns exec ${CLIENT} ip link set eth0 down
145	ip netns exec ${CLIENT} ip link set eth1 down
146
147	ip netns exec ${CLIENT} ip link add bond0 type bond $@
148	ip netns exec ${CLIENT} ip link set eth0 master bond0
149	ip netns exec ${CLIENT} ip link set eth1 master bond0
150	ip netns exec ${CLIENT} ip link set bond0 up
151	ip netns exec ${CLIENT} ip addr add ${CLIENTIP}/24 dev bond0
152}
153
154test_bond_recovery()
155{
156	RET=0
157
158	create_bond $@
159
160	# verify connectivity
161	slowwait 2 ip netns exec ${CLIENT} ping ${SWITCHIP} -c 2 -W 0.1 &> /dev/null
162	check_err $? "No connectivity"
163
164	# force the links of the bond down
165	ip netns exec ${SWITCH} ip link set eth0 down
166	sleep 2
167	ip netns exec ${SWITCH} ip link set eth0 up
168	ip netns exec ${SWITCH} ip link set eth1 down
169
170	# re-verify connectivity
171	slowwait 2 ip netns exec ${CLIENT} ping ${SWITCHIP} -c 2 -W 0.1 &> /dev/null
172
173	local rc=$?
174	check_err $rc "Bond failed to recover"
175	log_test "$1 ($2) bond recovery"
176	lag_reset_network
177}