1 #!/bin/bash 1 #!/bin/bash
2 # SPDX-License-Identifier: GPL-2.0 2 # SPDX-License-Identifier: GPL-2.0
3 3
4 # Author: Taehee Yoo <ap420073@gmail.com> 4 # Author: Taehee Yoo <ap420073@gmail.com>
5 # 5 #
6 # This script evaluates the AMT driver. 6 # This script evaluates the AMT driver.
7 # There are four network-namespaces, LISTENER, 7 # There are four network-namespaces, LISTENER, SOURCE, GATEWAY, RELAY.
8 # The role of LISTENER is to listen multicast 8 # The role of LISTENER is to listen multicast traffic.
9 # In order to do that, it send IGMP group join 9 # In order to do that, it send IGMP group join message.
10 # The role of SOURCE is to send multicast traf 10 # The role of SOURCE is to send multicast traffic to listener.
11 # The role of GATEWAY is to work Gateway role 11 # The role of GATEWAY is to work Gateway role of AMT interface.
12 # The role of RELAY is to work Relay role of A 12 # The role of RELAY is to work Relay role of AMT interface.
13 # 13 #
14 # 14 #
15 # +------------------------+ 15 # +------------------------+
16 # | LISTENER netns | 16 # | LISTENER netns |
17 # | | 17 # | |
18 # | +------------------+ | 18 # | +------------------+ |
19 # | | l_gw | | 19 # | | l_gw | |
20 # | | 192.168.0.2/24 | | 20 # | | 192.168.0.2/24 | |
21 # | | 2001:db8::2/64 | | 21 # | | 2001:db8::2/64 | |
22 # | +------------------+ | 22 # | +------------------+ |
23 # | . | 23 # | . |
24 # +------------------------+ 24 # +------------------------+
25 # . 25 # .
26 # . 26 # .
27 # +------------------------------------- 27 # +-----------------------------------------------------+
28 # | . GATEWAY netns 28 # | . GATEWAY netns |
29 # | . 29 # | . |
30 # |+------------------------------------ 30 # |+---------------------------------------------------+|
31 # || . br0 31 # || . br0 ||
32 # || +------------------+ +------- 32 # || +------------------+ +------------------+ ||
33 # || | gw_l | | 33 # || | gw_l | | amtg | ||
34 # || | 192.168.0.1/24 | +------- 34 # || | 192.168.0.1/24 | +--------+---------+ ||
35 # || | 2001:db8::1/64 | 35 # || | 2001:db8::1/64 | | ||
36 # || +------------------+ 36 # || +------------------+ | ||
37 # |+------------------------------------ 37 # |+-------------------------------------|-------------+|
38 # | 38 # | | |
39 # | +------- 39 # | +--------+---------+ |
40 # | | gw 40 # | | gw_relay | |
41 # | | 10. 41 # | | 10.0.0.1/24 | |
42 # | +------- 42 # | +------------------+ |
43 # | 43 # | . |
44 # +------------------------------------- 44 # +-----------------------------------------------------+
45 # 45 # .
46 # 46 # .
47 # +------------------------------------- 47 # +-----------------------------------------------------+
48 # | RELAY netns 48 # | RELAY netns . |
49 # | +------- 49 # | +------------------+ |
50 # | | re 50 # | | relay_gw | |
51 # | | 10. 51 # | | 10.0.0.2/24 | |
52 # | +------- 52 # | +--------+---------+ |
53 # | 53 # | | |
54 # | 54 # | | |
55 # | +------------------+ +------- 55 # | +------------------+ +--------+---------+ |
56 # | | relay_src | | 56 # | | relay_src | | amtr | |
57 # | | 172.17.0.1/24 | +------- 57 # | | 172.17.0.1/24 | +------------------+ |
58 # | | 2001:db8:3::1/64 | 58 # | | 2001:db8:3::1/64 | |
59 # | +------------------+ 59 # | +------------------+ |
60 # | . 60 # | . |
61 # | . 61 # | . |
62 # +------------------------------------- 62 # +-----------------------------------------------------+
63 # . 63 # .
64 # . 64 # .
65 # +------------------------+ 65 # +------------------------+
66 # | . | 66 # | . |
67 # | +------------------+ | 67 # | +------------------+ |
68 # | | src_relay | | 68 # | | src_relay | |
69 # | | 172.17.0.2/24 | | 69 # | | 172.17.0.2/24 | |
70 # | | 2001:db8:3::2/64 | | 70 # | | 2001:db8:3::2/64 | |
71 # | +------------------+ | 71 # | +------------------+ |
72 # | SOURCE netns | 72 # | SOURCE netns |
73 # +------------------------+ 73 # +------------------------+
74 #============================================= 74 #==============================================================================
75 75
76 readonly LISTENER=$(mktemp -u listener-XXXXXXX 76 readonly LISTENER=$(mktemp -u listener-XXXXXXXX)
77 readonly GATEWAY=$(mktemp -u gateway-XXXXXXXX) 77 readonly GATEWAY=$(mktemp -u gateway-XXXXXXXX)
78 readonly RELAY=$(mktemp -u relay-XXXXXXXX) 78 readonly RELAY=$(mktemp -u relay-XXXXXXXX)
79 readonly SOURCE=$(mktemp -u source-XXXXXXXX) 79 readonly SOURCE=$(mktemp -u source-XXXXXXXX)
80 readonly SMCROUTEDIR="$(mktemp -d)" 80 readonly SMCROUTEDIR="$(mktemp -d)"
81 ERR=4 81 ERR=4
82 err=0 82 err=0
83 83
84 exit_cleanup() 84 exit_cleanup()
85 { 85 {
86 for ns in "$@"; do 86 for ns in "$@"; do
87 ip netns delete "${ns}" 2>/dev 87 ip netns delete "${ns}" 2>/dev/null || true
88 done 88 done
89 if [ -f "$SMCROUTEDIR/amt.pid" ]; then 89 if [ -f "$SMCROUTEDIR/amt.pid" ]; then
90 smcpid=$(< $SMCROUTEDIR/amt.pi 90 smcpid=$(< $SMCROUTEDIR/amt.pid)
91 kill $smcpid 91 kill $smcpid
92 fi 92 fi
93 rm -rf $SMCROUTEDIR 93 rm -rf $SMCROUTEDIR
94 94
95 exit $ERR 95 exit $ERR
96 } 96 }
97 97
98 create_namespaces() 98 create_namespaces()
99 { 99 {
100 ip netns add "${LISTENER}" || exit_cle 100 ip netns add "${LISTENER}" || exit_cleanup
101 ip netns add "${GATEWAY}" || exit_clea 101 ip netns add "${GATEWAY}" || exit_cleanup "${LISTENER}"
102 ip netns add "${RELAY}" || exit_cleanu 102 ip netns add "${RELAY}" || exit_cleanup "${LISTENER}" "${GATEWAY}"
103 ip netns add "${SOURCE}" || exit_clean 103 ip netns add "${SOURCE}" || exit_cleanup "${LISTENER}" "${GATEWAY}" \
104 "${RELAY}" 104 "${RELAY}"
105 } 105 }
106 106
107 # The trap function handler 107 # The trap function handler
108 # 108 #
109 exit_cleanup_all() 109 exit_cleanup_all()
110 { 110 {
111 exit_cleanup "${LISTENER}" "${GATEWAY} 111 exit_cleanup "${LISTENER}" "${GATEWAY}" "${RELAY}" "${SOURCE}"
112 } 112 }
113 113
114 setup_interface() 114 setup_interface()
115 { 115 {
116 for ns in "${LISTENER}" "${GATEWAY}" " 116 for ns in "${LISTENER}" "${GATEWAY}" "${RELAY}" "${SOURCE}"; do
117 ip -netns "${ns}" link set dev 117 ip -netns "${ns}" link set dev lo up
118 done; 118 done;
119 119
120 ip link add l_gw type veth peer name g 120 ip link add l_gw type veth peer name gw_l
121 ip link add gw_relay type veth peer na 121 ip link add gw_relay type veth peer name relay_gw
122 ip link add relay_src type veth peer n 122 ip link add relay_src type veth peer name src_relay
123 123
124 ip link set l_gw netns "${LISTENER}" u 124 ip link set l_gw netns "${LISTENER}" up
125 ip link set gw_l netns "${GATEWAY}" up 125 ip link set gw_l netns "${GATEWAY}" up
126 ip link set gw_relay netns "${GATEWAY} 126 ip link set gw_relay netns "${GATEWAY}" up
127 ip link set relay_gw netns "${RELAY}" 127 ip link set relay_gw netns "${RELAY}" up
128 ip link set relay_src netns "${RELAY}" 128 ip link set relay_src netns "${RELAY}" up
129 ip link set src_relay netns "${SOURCE} 129 ip link set src_relay netns "${SOURCE}" up mtu 1400
130 130
131 ip netns exec "${LISTENER}" ip a a 192 131 ip netns exec "${LISTENER}" ip a a 192.168.0.2/24 dev l_gw
132 ip netns exec "${LISTENER}" ip r a def 132 ip netns exec "${LISTENER}" ip r a default via 192.168.0.1 dev l_gw
133 ip netns exec "${LISTENER}" ip a a 200 133 ip netns exec "${LISTENER}" ip a a 2001:db8::2/64 dev l_gw
134 ip netns exec "${LISTENER}" ip r a def 134 ip netns exec "${LISTENER}" ip r a default via 2001:db8::1 dev l_gw
135 ip netns exec "${LISTENER}" ip a a 239 135 ip netns exec "${LISTENER}" ip a a 239.0.0.1/32 dev l_gw autojoin
136 ip netns exec "${LISTENER}" ip a a ff0 136 ip netns exec "${LISTENER}" ip a a ff0e::5:6/128 dev l_gw autojoin
137 137
138 ip netns exec "${GATEWAY}" ip a a 192. 138 ip netns exec "${GATEWAY}" ip a a 192.168.0.1/24 dev gw_l
139 ip netns exec "${GATEWAY}" ip a a 2001 139 ip netns exec "${GATEWAY}" ip a a 2001:db8::1/64 dev gw_l
140 ip netns exec "${GATEWAY}" ip a a 10.0 140 ip netns exec "${GATEWAY}" ip a a 10.0.0.1/24 dev gw_relay
141 ip netns exec "${GATEWAY}" ip link add 141 ip netns exec "${GATEWAY}" ip link add br0 type bridge
142 ip netns exec "${GATEWAY}" ip link set 142 ip netns exec "${GATEWAY}" ip link set br0 up
143 ip netns exec "${GATEWAY}" ip link set 143 ip netns exec "${GATEWAY}" ip link set gw_l master br0
144 ip netns exec "${GATEWAY}" ip link set 144 ip netns exec "${GATEWAY}" ip link set gw_l up
145 ip netns exec "${GATEWAY}" ip link add 145 ip netns exec "${GATEWAY}" ip link add amtg master br0 type amt \
146 mode gateway local 10.0.0.1 di 146 mode gateway local 10.0.0.1 discovery 10.0.0.2 dev gw_relay \
147 gateway_port 2268 relay_port 2 147 gateway_port 2268 relay_port 2268
148 ip netns exec "${RELAY}" ip a a 10.0.0 148 ip netns exec "${RELAY}" ip a a 10.0.0.2/24 dev relay_gw
149 ip netns exec "${RELAY}" ip link add a 149 ip netns exec "${RELAY}" ip link add amtr type amt mode relay \
150 local 10.0.0.2 dev relay_gw re 150 local 10.0.0.2 dev relay_gw relay_port 2268 max_tunnels 4
151 ip netns exec "${RELAY}" ip a a 172.17 151 ip netns exec "${RELAY}" ip a a 172.17.0.1/24 dev relay_src
152 ip netns exec "${RELAY}" ip a a 2001:d 152 ip netns exec "${RELAY}" ip a a 2001:db8:3::1/64 dev relay_src
153 ip netns exec "${SOURCE}" ip a a 172.1 153 ip netns exec "${SOURCE}" ip a a 172.17.0.2/24 dev src_relay
154 ip netns exec "${SOURCE}" ip a a 2001: 154 ip netns exec "${SOURCE}" ip a a 2001:db8:3::2/64 dev src_relay
155 ip netns exec "${SOURCE}" ip r a defau 155 ip netns exec "${SOURCE}" ip r a default via 172.17.0.1 dev src_relay
156 ip netns exec "${SOURCE}" ip r a defau 156 ip netns exec "${SOURCE}" ip r a default via 2001:db8:3::1 dev src_relay
157 ip netns exec "${RELAY}" ip link set a 157 ip netns exec "${RELAY}" ip link set amtr up
158 ip netns exec "${GATEWAY}" ip link set 158 ip netns exec "${GATEWAY}" ip link set amtg up
159 } 159 }
160 160
161 setup_sysctl() 161 setup_sysctl()
162 { 162 {
163 ip netns exec "${RELAY}" sysctl net.ip 163 ip netns exec "${RELAY}" sysctl net.ipv4.ip_forward=1 -w -q
164 } 164 }
165 165
166 setup_iptables() 166 setup_iptables()
167 { 167 {
168 ip netns exec "${RELAY}" iptables -t m 168 ip netns exec "${RELAY}" iptables -t mangle -I PREROUTING \
169 -d 239.0.0.1 -j TTL --ttl-set 169 -d 239.0.0.1 -j TTL --ttl-set 2
170 ip netns exec "${RELAY}" ip6tables -t 170 ip netns exec "${RELAY}" ip6tables -t mangle -I PREROUTING \
171 -j HL --hl-set 2 171 -j HL --hl-set 2
172 } 172 }
173 173
174 setup_mcast_routing() 174 setup_mcast_routing()
175 { 175 {
176 ip netns exec "${RELAY}" smcrouted -P 176 ip netns exec "${RELAY}" smcrouted -P $SMCROUTEDIR/amt.pid
177 ip netns exec "${RELAY}" smcroutectl a 177 ip netns exec "${RELAY}" smcroutectl a relay_src \
178 172.17.0.2 239.0.0.1 amtr 178 172.17.0.2 239.0.0.1 amtr
179 ip netns exec "${RELAY}" smcroutectl a 179 ip netns exec "${RELAY}" smcroutectl a relay_src \
180 2001:db8:3::2 ff0e::5:6 amtr 180 2001:db8:3::2 ff0e::5:6 amtr
181 } 181 }
182 182
183 test_remote_ip() 183 test_remote_ip()
184 { 184 {
185 REMOTE=$(ip netns exec "${GATEWAY}" \ 185 REMOTE=$(ip netns exec "${GATEWAY}" \
186 ip -d -j link show amtg | jq . 186 ip -d -j link show amtg | jq .[0].linkinfo.info_data.remote)
187 if [ $REMOTE == "\"10.0.0.2\"" ]; then 187 if [ $REMOTE == "\"10.0.0.2\"" ]; then
188 printf "TEST: %-60s [ OK ]\n" 188 printf "TEST: %-60s [ OK ]\n" "amt discovery"
189 else 189 else
190 printf "TEST: %-60s [FAIL]\n" 190 printf "TEST: %-60s [FAIL]\n" "amt discovery"
191 ERR=1 191 ERR=1
192 fi 192 fi
193 } 193 }
194 194
195 send_mcast_torture4() 195 send_mcast_torture4()
196 { 196 {
197 ip netns exec "${SOURCE}" bash -c \ 197 ip netns exec "${SOURCE}" bash -c \
198 'cat /dev/urandom | head -c 1G 198 'cat /dev/urandom | head -c 1G | nc -w 1 -u 239.0.0.1 4001'
199 } 199 }
200 200
201 201
202 send_mcast_torture6() 202 send_mcast_torture6()
203 { 203 {
204 ip netns exec "${SOURCE}" bash -c \ 204 ip netns exec "${SOURCE}" bash -c \
205 'cat /dev/urandom | head -c 1G 205 'cat /dev/urandom | head -c 1G | nc -w 1 -u ff0e::5:6 6001'
206 } 206 }
207 207
208 check_features() 208 check_features()
209 { 209 {
210 ip link help 2>&1 | grep -q amt 210 ip link help 2>&1 | grep -q amt
211 if [ $? -ne 0 ]; then 211 if [ $? -ne 0 ]; then
212 echo "Missing amt support in i 212 echo "Missing amt support in iproute2" >&2
213 exit_cleanup 213 exit_cleanup
214 fi 214 fi
215 } 215 }
216 216
217 test_ipv4_forward() 217 test_ipv4_forward()
218 { 218 {
219 RESULT4=$(ip netns exec "${LISTENER}" 219 RESULT4=$(ip netns exec "${LISTENER}" timeout 15 socat - UDP4-LISTEN:4000,readbytes=128 || true)
220 if echo "$RESULT4" | grep -q "172.17.0 220 if echo "$RESULT4" | grep -q "172.17.0.2"; then
221 printf "TEST: %-60s [ OK ]\n" 221 printf "TEST: %-60s [ OK ]\n" "IPv4 amt multicast forwarding"
222 exit 0 222 exit 0
223 else 223 else
224 printf "TEST: %-60s [FAIL]\n" 224 printf "TEST: %-60s [FAIL]\n" "IPv4 amt multicast forwarding"
225 exit 1 225 exit 1
226 fi 226 fi
227 } 227 }
228 228
229 test_ipv6_forward() 229 test_ipv6_forward()
230 { 230 {
231 RESULT6=$(ip netns exec "${LISTENER}" 231 RESULT6=$(ip netns exec "${LISTENER}" timeout 15 socat - UDP6-LISTEN:6000,readbytes=128 || true)
232 if echo "$RESULT6" | grep -q "2001:db8 232 if echo "$RESULT6" | grep -q "2001:db8:3::2"; then
233 printf "TEST: %-60s [ OK ]\n" 233 printf "TEST: %-60s [ OK ]\n" "IPv6 amt multicast forwarding"
234 exit 0 234 exit 0
235 else 235 else
236 printf "TEST: %-60s [FAIL]\n" 236 printf "TEST: %-60s [FAIL]\n" "IPv6 amt multicast forwarding"
237 exit 1 237 exit 1
238 fi 238 fi
239 } 239 }
240 240
241 send_mcast4() 241 send_mcast4()
242 { 242 {
243 sleep 2 243 sleep 2
244 ip netns exec "${SOURCE}" bash -c \ 244 ip netns exec "${SOURCE}" bash -c \
245 'printf "%s %128s" 172.17.0.2 245 'printf "%s %128s" 172.17.0.2 | nc -w 1 -u 239.0.0.1 4000' &
246 } 246 }
247 247
248 send_mcast6() 248 send_mcast6()
249 { 249 {
250 sleep 2 250 sleep 2
251 ip netns exec "${SOURCE}" bash -c \ 251 ip netns exec "${SOURCE}" bash -c \
252 'printf "%s %128s" 2001:db8:3: 252 'printf "%s %128s" 2001:db8:3::2 | nc -w 1 -u ff0e::5:6 6000' &
253 } 253 }
254 254
255 check_features 255 check_features
256 256
257 create_namespaces 257 create_namespaces
258 258
259 set -e 259 set -e
260 trap exit_cleanup_all EXIT 260 trap exit_cleanup_all EXIT
261 261
262 setup_interface 262 setup_interface
263 setup_sysctl 263 setup_sysctl
264 setup_iptables 264 setup_iptables
265 setup_mcast_routing 265 setup_mcast_routing
266 test_remote_ip 266 test_remote_ip
267 test_ipv4_forward & 267 test_ipv4_forward &
268 pid=$! 268 pid=$!
269 send_mcast4 269 send_mcast4
270 wait $pid || err=$? 270 wait $pid || err=$?
271 if [ $err -eq 1 ]; then 271 if [ $err -eq 1 ]; then
272 ERR=1 272 ERR=1
273 fi 273 fi
274 test_ipv6_forward & 274 test_ipv6_forward &
275 pid=$! 275 pid=$!
276 send_mcast6 276 send_mcast6
277 wait $pid || err=$? 277 wait $pid || err=$?
278 if [ $err -eq 1 ]; then 278 if [ $err -eq 1 ]; then
279 ERR=1 279 ERR=1
280 fi 280 fi
281 send_mcast_torture4 281 send_mcast_torture4
282 printf "TEST: %-60s [ OK ]\n" "IPv4 amt traff 282 printf "TEST: %-60s [ OK ]\n" "IPv4 amt traffic forwarding torture"
283 send_mcast_torture6 283 send_mcast_torture6
284 printf "TEST: %-60s [ OK ]\n" "IPv6 amt traff 284 printf "TEST: %-60s [ OK ]\n" "IPv6 amt traffic forwarding torture"
285 sleep 5 285 sleep 5
286 if [ "${ERR}" -eq 1 ]; then 286 if [ "${ERR}" -eq 1 ]; then
287 echo "Some tests failed." >&2 287 echo "Some tests failed." >&2
288 else 288 else
289 ERR=0 289 ERR=0
290 fi 290 fi
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