xref: /openbmc/linux/tools/testing/selftests/net/amt.sh (revision 31eeb6b0) 
1#!/bin/sh
2# SPDX-License-Identifier: GPL-2.0
3
4# Author: Taehee Yoo <ap420073@gmail.com>
5#
6# This script evaluates the AMT driver.
7# There are four network-namespaces, LISTENER, SOURCE, GATEWAY, RELAY.
8# The role of LISTENER is to listen multicast traffic.
9# In order to do that, it send IGMP group join message.
10# The role of SOURCE is to send multicast traffic to listener.
11# The role of GATEWAY is to work Gateway role of AMT interface.
12# The role of RELAY is to work Relay role of AMT interface.
13#
14#
15#       +------------------------+
16#       |    LISTENER netns      |
17#       |                        |
18#       |  +------------------+  |
19#       |  |       l_gw       |  |
20#       |  |  192.168.0.2/24  |  |
21#       |  |  2001:db8::2/64  |  |
22#       |  +------------------+  |
23#       |            .           |
24#       +------------------------+
25#                    .
26#                    .
27#       +-----------------------------------------------------+
28#       |            .         GATEWAY netns                  |
29#       |            .                                        |
30#       |+---------------------------------------------------+|
31#       ||           .          br0                          ||
32#       || +------------------+       +------------------+   ||
33#       || |       gw_l       |       |       amtg       |   ||
34#       || |  192.168.0.1/24  |       +--------+---------+   ||
35#       || |  2001:db8::1/64  |                |             ||
36#       || +------------------+                |             ||
37#       |+-------------------------------------|-------------+|
38#       |                                      |              |
39#       |                             +--------+---------+    |
40#       |                             |     gw_relay     |    |
41#       |                             |    10.0.0.1/24   |    |
42#       |                             +------------------+    |
43#       |                                      .              |
44#       +-----------------------------------------------------+
45#                                              .
46#                                              .
47#       +-----------------------------------------------------+
48#       |                       RELAY netns    .              |
49#       |                             +------------------+    |
50#       |                             |     relay_gw     |    |
51#       |                             |    10.0.0.2/24   |    |
52#       |                             +--------+---------+    |
53#       |                                      |              |
54#       |                                      |              |
55#       |  +------------------+       +--------+---------+    |
56#       |  |     relay_src    |       |       amtr       |    |
57#       |  |   172.17.0.1/24  |       +------------------+    |
58#       |  | 2001:db8:3::1/64 |                               |
59#       |  +------------------+                               |
60#       |            .                                        |
61#       |            .                                        |
62#       +-----------------------------------------------------+
63#                    .
64#                    .
65#       +------------------------+
66#       |            .           |
67#       |  +------------------+  |
68#       |  |     src_relay    |  |
69#       |  |   172.17.0.2/24  |  |
70#       |  | 2001:db8:3::2/64 |  |
71#       |  +------------------+  |
72#       |      SOURCE netns      |
73#       +------------------------+
74#==============================================================================
75
76readonly LISTENER=$(mktemp -u listener-XXXXXXXX)
77readonly GATEWAY=$(mktemp -u gateway-XXXXXXXX)
78readonly RELAY=$(mktemp -u relay-XXXXXXXX)
79readonly SOURCE=$(mktemp -u source-XXXXXXXX)
80ERR=4
81err=0
82
83exit_cleanup()
84{
85	for ns in "$@"; do
86		ip netns delete "${ns}" 2>/dev/null || true
87	done
88
89	exit $ERR
90}
91
92create_namespaces()
93{
94	ip netns add "${LISTENER}" || exit_cleanup
95	ip netns add "${GATEWAY}" || exit_cleanup "${LISTENER}"
96	ip netns add "${RELAY}" || exit_cleanup "${LISTENER}" "${GATEWAY}"
97	ip netns add "${SOURCE}" || exit_cleanup "${LISTENER}" "${GATEWAY}" \
98		"${RELAY}"
99}
100
101# The trap function handler
102#
103exit_cleanup_all()
104{
105	exit_cleanup "${LISTENER}" "${GATEWAY}" "${RELAY}" "${SOURCE}"
106}
107
108setup_interface()
109{
110	for ns in "${LISTENER}" "${GATEWAY}" "${RELAY}" "${SOURCE}"; do
111		ip -netns "${ns}" link set dev lo up
112	done;
113
114	ip link add l_gw type veth peer name gw_l
115	ip link add gw_relay type veth peer name relay_gw
116	ip link add relay_src type veth peer name src_relay
117
118	ip link set l_gw netns "${LISTENER}" up
119	ip link set gw_l netns "${GATEWAY}" up
120	ip link set gw_relay netns "${GATEWAY}" up
121	ip link set relay_gw netns "${RELAY}" up
122	ip link set relay_src netns "${RELAY}" up
123	ip link set src_relay netns "${SOURCE}" up mtu 1400
124
125	ip netns exec "${LISTENER}" ip a a 192.168.0.2/24 dev l_gw
126	ip netns exec "${LISTENER}" ip r a default via 192.168.0.1 dev l_gw
127	ip netns exec "${LISTENER}" ip a a 2001:db8::2/64 dev l_gw
128	ip netns exec "${LISTENER}" ip r a default via 2001:db8::1 dev l_gw
129	ip netns exec "${LISTENER}" ip a a 239.0.0.1/32 dev l_gw autojoin
130	ip netns exec "${LISTENER}" ip a a ff0e::5:6/128 dev l_gw autojoin
131
132	ip netns exec "${GATEWAY}" ip a a 192.168.0.1/24 dev gw_l
133	ip netns exec "${GATEWAY}" ip a a 2001:db8::1/64 dev gw_l
134	ip netns exec "${GATEWAY}" ip a a 10.0.0.1/24 dev gw_relay
135	ip netns exec "${GATEWAY}" ip link add br0 type bridge
136	ip netns exec "${GATEWAY}" ip link set br0 up
137	ip netns exec "${GATEWAY}" ip link set gw_l master br0
138	ip netns exec "${GATEWAY}" ip link set gw_l up
139	ip netns exec "${GATEWAY}" ip link add amtg master br0 type amt \
140		mode gateway local 10.0.0.1 discovery 10.0.0.2 dev gw_relay \
141		gateway_port 2268 relay_port 2268
142	ip netns exec "${RELAY}" ip a a 10.0.0.2/24 dev relay_gw
143	ip netns exec "${RELAY}" ip link add amtr type amt mode relay \
144		local 10.0.0.2 dev relay_gw relay_port 2268 max_tunnels 4
145	ip netns exec "${RELAY}" ip a a 172.17.0.1/24 dev relay_src
146	ip netns exec "${RELAY}" ip a a 2001:db8:3::1/64 dev relay_src
147	ip netns exec "${SOURCE}" ip a a 172.17.0.2/24 dev src_relay
148	ip netns exec "${SOURCE}" ip a a 2001:db8:3::2/64 dev src_relay
149	ip netns exec "${SOURCE}" ip r a default via 172.17.0.1 dev src_relay
150	ip netns exec "${SOURCE}" ip r a default via 2001:db8:3::1 dev src_relay
151	ip netns exec "${RELAY}" ip link set amtr up
152	ip netns exec "${GATEWAY}" ip link set amtg up
153}
154
155setup_sysctl()
156{
157	ip netns exec "${RELAY}" sysctl net.ipv4.ip_forward=1 -w -q
158}
159
160setup_iptables()
161{
162	ip netns exec "${RELAY}" iptables -t mangle -I PREROUTING \
163		-d 239.0.0.1 -j TTL --ttl-set 2
164	ip netns exec "${RELAY}" ip6tables -t mangle -I PREROUTING \
165		-j HL --hl-set 2
166}
167
168setup_mcast_routing()
169{
170	ip netns exec "${RELAY}" smcrouted
171	ip netns exec "${RELAY}" smcroutectl a relay_src \
172		172.17.0.2 239.0.0.1 amtr
173	ip netns exec "${RELAY}" smcroutectl a relay_src \
174		2001:db8:3::2 ff0e::5:6 amtr
175}
176
177test_remote_ip()
178{
179	REMOTE=$(ip netns exec "${GATEWAY}" \
180		ip -d -j link show amtg | jq .[0].linkinfo.info_data.remote)
181	if [ $REMOTE == "\"10.0.0.2\"" ]; then
182		printf "TEST: %-60s  [ OK ]\n" "amt discovery"
183	else
184		printf "TEST: %-60s  [FAIL]\n" "amt discovery"
185		ERR=1
186	fi
187}
188
189send_mcast_torture4()
190{
191	ip netns exec "${SOURCE}" bash -c \
192		'cat /dev/urandom | head -c 1G | nc -w 1 -u 239.0.0.1 4001'
193}
194
195
196send_mcast_torture6()
197{
198	ip netns exec "${SOURCE}" bash -c \
199		'cat /dev/urandom | head -c 1G | nc -w 1 -u ff0e::5:6 6001'
200}
201
202check_features()
203{
204        ip link help 2>&1 | grep -q amt
205        if [ $? -ne 0 ]; then
206                echo "Missing amt support in iproute2" >&2
207                exit_cleanup
208        fi
209}
210
211test_ipv4_forward()
212{
213	RESULT4=$(ip netns exec "${LISTENER}" nc -w 1 -l -u 239.0.0.1 4000)
214	if [ "$RESULT4" == "172.17.0.2" ]; then
215		printf "TEST: %-60s  [ OK ]\n" "IPv4 amt multicast forwarding"
216		exit 0
217	else
218		printf "TEST: %-60s  [FAIL]\n" "IPv4 amt multicast forwarding"
219		exit 1
220	fi
221}
222
223test_ipv6_forward()
224{
225	RESULT6=$(ip netns exec "${LISTENER}" nc -w 1 -l -u ff0e::5:6 6000)
226	if [ "$RESULT6" == "2001:db8:3::2" ]; then
227		printf "TEST: %-60s  [ OK ]\n" "IPv6 amt multicast forwarding"
228		exit 0
229	else
230		printf "TEST: %-60s  [FAIL]\n" "IPv6 amt multicast forwarding"
231		exit 1
232	fi
233}
234
235send_mcast4()
236{
237	sleep 2
238	ip netns exec "${SOURCE}" bash -c \
239		'echo 172.17.0.2 | nc -w 1 -u 239.0.0.1 4000' &
240}
241
242send_mcast6()
243{
244	sleep 2
245	ip netns exec "${SOURCE}" bash -c \
246		'echo 2001:db8:3::2 | nc -w 1 -u ff0e::5:6 6000' &
247}
248
249check_features
250
251create_namespaces
252
253set -e
254trap exit_cleanup_all EXIT
255
256setup_interface
257setup_sysctl
258setup_iptables
259setup_mcast_routing
260test_remote_ip
261test_ipv4_forward &
262pid=$!
263send_mcast4
264wait $pid || err=$?
265if [ $err -eq 1 ]; then
266	ERR=1
267fi
268test_ipv6_forward &
269pid=$!
270send_mcast6
271wait $pid || err=$?
272if [ $err -eq 1 ]; then
273	ERR=1
274fi
275send_mcast_torture4
276printf "TEST: %-60s  [ OK ]\n" "IPv4 amt traffic forwarding torture"
277send_mcast_torture6
278printf "TEST: %-60s  [ OK ]\n" "IPv6 amt traffic forwarding torture"
279sleep 5
280if [ "${ERR}" -eq 1 ]; then
281        echo "Some tests failed." >&2
282else
283        ERR=0
284fi
285