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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 | #!/bin/sh # SPDX-License-Identifier: GPL-2.0 # Author: Taehee Yoo <ap420073@gmail.com> # # This script evaluates the AMT driver. # There are four network-namespaces, LISTENER, SOURCE, GATEWAY, RELAY. # The role of LISTENER is to listen multicast traffic. # In order to do that, it send IGMP group join message. # The role of SOURCE is to send multicast traffic to listener. # The role of GATEWAY is to work Gateway role of AMT interface. # The role of RELAY is to work Relay role of AMT interface. # # # +------------------------+ # | LISTENER netns | # | | # | +------------------+ | # | | l_gw | | # | | 192.168.0.2/24 | | # | | 2001:db8::2/64 | | # | +------------------+ | # | . | # +------------------------+ # . # . # +-----------------------------------------------------+ # | . GATEWAY netns | # | . | # |+---------------------------------------------------+| # || . br0 || # || +------------------+ +------------------+ || # || | gw_l | | amtg | || # || | 192.168.0.1/24 | +--------+---------+ || # || | 2001:db8::1/64 | | || # || +------------------+ | || # |+-------------------------------------|-------------+| # | | | # | +--------+---------+ | # | | gw_relay | | # | | 10.0.0.1/24 | | # | +------------------+ | # | . | # +-----------------------------------------------------+ # . # . # +-----------------------------------------------------+ # | RELAY netns . | # | +------------------+ | # | | relay_gw | | # | | 10.0.0.2/24 | | # | +--------+---------+ | # | | | # | | | # | +------------------+ +--------+---------+ | # | | relay_src | | amtr | | # | | 172.17.0.1/24 | +------------------+ | # | | 2001:db8:3::1/64 | | # | +------------------+ | # | . | # | . | # +-----------------------------------------------------+ # . # . # +------------------------+ # | . | # | +------------------+ | # | | src_relay | | # | | 172.17.0.2/24 | | # | | 2001:db8:3::2/64 | | # | +------------------+ | # | SOURCE netns | # +------------------------+ #============================================================================== readonly LISTENER=$(mktemp -u listener-XXXXXXXX) readonly GATEWAY=$(mktemp -u gateway-XXXXXXXX) readonly RELAY=$(mktemp -u relay-XXXXXXXX) readonly SOURCE=$(mktemp -u source-XXXXXXXX) readonly SMCROUTEDIR="$(mktemp -d)" ERR=4 err=0 exit_cleanup() { for ns in "$@"; do ip netns delete "${ns}" 2>/dev/null || true done if [ -f "$SMCROUTEDIR/amt.pid" ]; then smcpid=$(< $SMCROUTEDIR/amt.pid) kill $smcpid fi rm -rf $SMCROUTEDIR exit $ERR } create_namespaces() { ip netns add "${LISTENER}" || exit_cleanup ip netns add "${GATEWAY}" || exit_cleanup "${LISTENER}" ip netns add "${RELAY}" || exit_cleanup "${LISTENER}" "${GATEWAY}" ip netns add "${SOURCE}" || exit_cleanup "${LISTENER}" "${GATEWAY}" \ "${RELAY}" } # The trap function handler # exit_cleanup_all() { exit_cleanup "${LISTENER}" "${GATEWAY}" "${RELAY}" "${SOURCE}" } setup_interface() { for ns in "${LISTENER}" "${GATEWAY}" "${RELAY}" "${SOURCE}"; do ip -netns "${ns}" link set dev lo up done; ip link add l_gw type veth peer name gw_l ip link add gw_relay type veth peer name relay_gw ip link add relay_src type veth peer name src_relay ip link set l_gw netns "${LISTENER}" up ip link set gw_l netns "${GATEWAY}" up ip link set gw_relay netns "${GATEWAY}" up ip link set relay_gw netns "${RELAY}" up ip link set relay_src netns "${RELAY}" up ip link set src_relay netns "${SOURCE}" up mtu 1400 ip netns exec "${LISTENER}" ip a a 192.168.0.2/24 dev l_gw ip netns exec "${LISTENER}" ip r a default via 192.168.0.1 dev l_gw ip netns exec "${LISTENER}" ip a a 2001:db8::2/64 dev l_gw ip netns exec "${LISTENER}" ip r a default via 2001:db8::1 dev l_gw ip netns exec "${LISTENER}" ip a a 239.0.0.1/32 dev l_gw autojoin ip netns exec "${LISTENER}" ip a a ff0e::5:6/128 dev l_gw autojoin ip netns exec "${GATEWAY}" ip a a 192.168.0.1/24 dev gw_l ip netns exec "${GATEWAY}" ip a a 2001:db8::1/64 dev gw_l ip netns exec "${GATEWAY}" ip a a 10.0.0.1/24 dev gw_relay ip netns exec "${GATEWAY}" ip link add br0 type bridge ip netns exec "${GATEWAY}" ip link set br0 up ip netns exec "${GATEWAY}" ip link set gw_l master br0 ip netns exec "${GATEWAY}" ip link set gw_l up ip netns exec "${GATEWAY}" ip link add amtg master br0 type amt \ mode gateway local 10.0.0.1 discovery 10.0.0.2 dev gw_relay \ gateway_port 2268 relay_port 2268 ip netns exec "${RELAY}" ip a a 10.0.0.2/24 dev relay_gw ip netns exec "${RELAY}" ip link add amtr type amt mode relay \ local 10.0.0.2 dev relay_gw relay_port 2268 max_tunnels 4 ip netns exec "${RELAY}" ip a a 172.17.0.1/24 dev relay_src ip netns exec "${RELAY}" ip a a 2001:db8:3::1/64 dev relay_src ip netns exec "${SOURCE}" ip a a 172.17.0.2/24 dev src_relay ip netns exec "${SOURCE}" ip a a 2001:db8:3::2/64 dev src_relay ip netns exec "${SOURCE}" ip r a default via 172.17.0.1 dev src_relay ip netns exec "${SOURCE}" ip r a default via 2001:db8:3::1 dev src_relay ip netns exec "${RELAY}" ip link set amtr up ip netns exec "${GATEWAY}" ip link set amtg up } setup_sysctl() { ip netns exec "${RELAY}" sysctl net.ipv4.ip_forward=1 -w -q } setup_iptables() { ip netns exec "${RELAY}" iptables -t mangle -I PREROUTING \ -d 239.0.0.1 -j TTL --ttl-set 2 ip netns exec "${RELAY}" ip6tables -t mangle -I PREROUTING \ -j HL --hl-set 2 } setup_mcast_routing() { ip netns exec "${RELAY}" smcrouted -P $SMCROUTEDIR/amt.pid ip netns exec "${RELAY}" smcroutectl a relay_src \ 172.17.0.2 239.0.0.1 amtr ip netns exec "${RELAY}" smcroutectl a relay_src \ 2001:db8:3::2 ff0e::5:6 amtr } test_remote_ip() { REMOTE=$(ip netns exec "${GATEWAY}" \ ip -d -j link show amtg | jq .[0].linkinfo.info_data.remote) if [ $REMOTE == "\"10.0.0.2\"" ]; then printf "TEST: %-60s [ OK ]\n" "amt discovery" else printf "TEST: %-60s [FAIL]\n" "amt discovery" ERR=1 fi } send_mcast_torture4() { ip netns exec "${SOURCE}" bash -c \ 'cat /dev/urandom | head -c 1G | nc -w 1 -u 239.0.0.1 4001' } send_mcast_torture6() { ip netns exec "${SOURCE}" bash -c \ 'cat /dev/urandom | head -c 1G | nc -w 1 -u ff0e::5:6 6001' } check_features() { ip link help 2>&1 | grep -q amt if [ $? -ne 0 ]; then echo "Missing amt support in iproute2" >&2 exit_cleanup fi } test_ipv4_forward() { RESULT4=$(ip netns exec "${LISTENER}" timeout 15 socat - UDP4-LISTEN:4000,readbytes=128 || true) if echo "$RESULT4" | grep -q "172.17.0.2"; then printf "TEST: %-60s [ OK ]\n" "IPv4 amt multicast forwarding" exit 0 else printf "TEST: %-60s [FAIL]\n" "IPv4 amt multicast forwarding" exit 1 fi } test_ipv6_forward() { RESULT6=$(ip netns exec "${LISTENER}" timeout 15 socat - UDP6-LISTEN:6000,readbytes=128 || true) if echo "$RESULT6" | grep -q "2001:db8:3::2"; then printf "TEST: %-60s [ OK ]\n" "IPv6 amt multicast forwarding" exit 0 else printf "TEST: %-60s [FAIL]\n" "IPv6 amt multicast forwarding" exit 1 fi } send_mcast4() { sleep 2 ip netns exec "${SOURCE}" bash -c \ 'printf "%s %128s" 172.17.0.2 | nc -w 1 -u 239.0.0.1 4000' & } send_mcast6() { sleep 2 ip netns exec "${SOURCE}" bash -c \ 'printf "%s %128s" 2001:db8:3::2 | nc -w 1 -u ff0e::5:6 6000' & } check_features create_namespaces set -e trap exit_cleanup_all EXIT setup_interface setup_sysctl setup_iptables setup_mcast_routing test_remote_ip test_ipv4_forward & pid=$! send_mcast4 wait $pid || err=$? if [ $err -eq 1 ]; then ERR=1 fi test_ipv6_forward & pid=$! send_mcast6 wait $pid || err=$? if [ $err -eq 1 ]; then ERR=1 fi send_mcast_torture4 printf "TEST: %-60s [ OK ]\n" "IPv4 amt traffic forwarding torture" send_mcast_torture6 printf "TEST: %-60s [ OK ]\n" "IPv6 amt traffic forwarding torture" sleep 5 if [ "${ERR}" -eq 1 ]; then echo "Some tests failed." >&2 else ERR=0 fi |