summaryrefslogtreecommitdiff
path: root/tools/testing/selftests/net/forwarding/bridge_igmp.sh
blob: 88d2472ba15133fc8afde226d1d29ddb7ebb6eb8 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
#!/bin/bash
# SPDX-License-Identifier: GPL-2.0

ALL_TESTS="reportleave_test"
NUM_NETIFS=4
CHECK_TC="yes"
TEST_GROUP="239.10.10.10"
TEST_GROUP_MAC="01:00:5e:0a:0a:0a"
source lib.sh

h1_create()
{
	simple_if_init $h1 192.0.2.1/24 2001:db8:1::1/64
}

h1_destroy()
{
	simple_if_fini $h1 192.0.2.1/24 2001:db8:1::1/64
}

h2_create()
{
	simple_if_init $h2 192.0.2.2/24 2001:db8:1::2/64
}

h2_destroy()
{
	simple_if_fini $h2 192.0.2.2/24 2001:db8:1::2/64
}

switch_create()
{
	ip link add dev br0 type bridge mcast_snooping 1 mcast_querier 1

	ip link set dev $swp1 master br0
	ip link set dev $swp2 master br0

	ip link set dev br0 up
	ip link set dev $swp1 up
	ip link set dev $swp2 up
}

switch_destroy()
{
	ip link set dev $swp2 down
	ip link set dev $swp1 down

	ip link del dev br0
}

setup_prepare()
{
	h1=${NETIFS[p1]}
	swp1=${NETIFS[p2]}

	swp2=${NETIFS[p3]}
	h2=${NETIFS[p4]}

	vrf_prepare

	h1_create
	h2_create

	switch_create
}

cleanup()
{
	pre_cleanup

	switch_destroy

	# Always cleanup the mcast group
	ip address del dev $h2 $TEST_GROUP/32 2>&1 1>/dev/null

	h2_destroy
	h1_destroy

	vrf_cleanup
}

# return 0 if the packet wasn't seen on host2_if or 1 if it was
mcast_packet_test()
{
	local mac=$1
	local ip=$2
	local host1_if=$3
	local host2_if=$4
	local seen=0

	# Add an ACL on `host2_if` which will tell us whether the packet
	# was received by it or not.
	tc qdisc add dev $host2_if ingress
	tc filter add dev $host2_if ingress protocol ip pref 1 handle 101 \
		flower dst_mac $mac action drop

	$MZ $host1_if -c 1 -p 64 -b $mac -B $ip -t udp "dp=4096,sp=2048" -q
	sleep 1

	tc -j -s filter show dev $host2_if ingress \
		| jq -e ".[] | select(.options.handle == 101) \
		| select(.options.actions[0].stats.packets == 1)" &> /dev/null
	if [[ $? -eq 0 ]]; then
		seen=1
	fi

	tc filter del dev $host2_if ingress protocol ip pref 1 handle 101 flower
	tc qdisc del dev $host2_if ingress

	return $seen
}

reportleave_test()
{
	RET=0
	ip address add dev $h2 $TEST_GROUP/32 autojoin
	check_err $? "Could not join $TEST_GROUP"

	sleep 5
	bridge mdb show dev br0 | grep $TEST_GROUP 1>/dev/null
	check_err $? "Report didn't create mdb entry for $TEST_GROUP"

	mcast_packet_test $TEST_GROUP_MAC $TEST_GROUP $h1 $h2
	check_fail $? "Traffic to $TEST_GROUP wasn't forwarded"

	log_test "IGMP report $TEST_GROUP"

	RET=0
	bridge mdb show dev br0 | grep $TEST_GROUP 1>/dev/null
	check_err $? "mdb entry for $TEST_GROUP is missing"

	ip address del dev $h2 $TEST_GROUP/32
	check_err $? "Could not leave $TEST_GROUP"

	sleep 5
	bridge mdb show dev br0 | grep $TEST_GROUP 1>/dev/null
	check_fail $? "Leave didn't delete mdb entry for $TEST_GROUP"

	mcast_packet_test $TEST_GROUP_MAC $TEST_GROUP $h1 $h2
	check_err $? "Traffic to $TEST_GROUP was forwarded without mdb entry"

	log_test "IGMP leave $TEST_GROUP"
}

trap cleanup EXIT

setup_prepare
setup_wait

tests_run

exit $EXIT_STATUS