1 #!/bin/bash
2 # SPDX-License-Identifier: GPL-2.0
3
4 NAMESPACES=""
5
6 # Test that a link aggregation device (bonding, team) removes the hardware
7 # addresses that it adds on its underlying devices.
8 test_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 $mode"
74 }
75
76 # Build a generic 2 node net namespace with 2 connections
77 # between the namespaces
78 #
79 # +-----------+ +-----------+
80 # | node1 | | node2 |
81 # | | | |
82 # | | | |
83 # | eth0 +-------+ eth0 |
84 # | | | |
85 # | eth1 +-------+ eth1 |
86 # | | | |
87 # +-----------+ +-----------+
88 lag_setup2x2()
89 {
90 local state=${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
111 lag_cleanup()
112 {
113 for n in ${NAMESPACES}; do
114 ip netns delete ${n} >/dev/null 2>&1 || true
115 done
116 }
117
118 SWITCH="lag_node1"
119 CLIENT="lag_node2"
120 CLIENTIP="172.20.2.1"
121 SWITCHIP="172.20.2.2"
122
123 lag_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
134 lag_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
141 create_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
154 test_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 }
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