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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 | # SPDX-License-Identifier: GPL-2.0 #!/bin/bash # Handles creation and destruction of IP-in-IP or GRE tunnels over the given # topology. Supports both flat and hierarchical models. # # Flat Model: # Overlay and underlay share the same VRF. # SW1 uses default VRF so tunnel has no bound dev. # SW2 uses non-default VRF tunnel has a bound dev. # +--------------------------------+ # | H1 | # | $h1 + | # | 198.51.100.1/24 | | # | 2001:db8:1::1/64 | | # +-------------------------|------+ # | # +-------------------------|-------------------+ # | SW1 | | # | $ol1 + | # | 198.51.100.2/24 | # | 2001:db8:1::2/64 | # | | # | + g1a (ip6gre) | # | loc=2001:db8:3::1 | # | rem=2001:db8:3::2 --. | # | tos=inherit | | # | . | # | .--------------------- | # | | | # | v | # | + $ul1.111 (vlan) | # | | 2001:db8:10::1/64 | # | \ | # | \____________ | # | | | # | VRF default + $ul1 | # +---------------------|-----------------------+ # | # +---------------------|-----------------------+ # | SW2 | | # | $ul2 + | # | ___________| | # | / | # | / | # | + $ul2.111 (vlan) | # | ^ 2001:db8:10::2/64 | # | | | # | | | # | '----------------------. | # | + g2a (ip6gre) | | # | loc=2001:db8:3::2 | | # | rem=2001:db8:3::1 --' | # | tos=inherit | # | | # | + $ol2 | # | | 203.0.113.2/24 | # | VRF v$ol2 | 2001:db8:2::2/64 | # +---------------------|-----------------------+ # +---------------------|----------+ # | H2 | | # | $h2 + | # | 203.0.113.1/24 | # | 2001:db8:2::1/64 | # +--------------------------------+ # # Hierarchical model: # The tunnel is bound to a device in a different VRF # # +--------------------------------+ # | H1 | # | $h1 + | # | 198.51.100.1/24 | | # | 2001:db8:1::1/64 | | # +-------------------------|------+ # | # +-------------------------|-------------------+ # | SW1 | | # | +-----------------------|-----------------+ | # | | $ol1 + | | # | | 198.51.100.2/24 | | # | | 2001:db8:1::2/64 | | # | | | | # | | + g1a (ip6gre) | | # | | loc=2001:db8:3::1 | | # | | rem=2001:db8:3::2 | | # | | tos=inherit | | # | | ^ | | # | | VRF v$ol1 | | | # | +--------------------|--------------------+ | # | | | # | +--------------------|--------------------+ | # | | VRF v$ul1 | | | # | | | | | # | | v | | # | | dummy1 + | | # | | 2001:db8:3::1/64 | | # | | .-----------' | | # | | | | | # | | v | | # | | + $ul1.111 (vlan) | | # | | | 2001:db8:10::1/64 | | # | | \ | | # | | \__________ | | # | | | | | # | | + $ul1 | | # | +---------------------|-------------------+ | # +-----------------------|---------------------+ # | # +-----------------------|---------------------+ # | SW2 | | # | +---------------------|-------------------+ | # | | + $ul2 | | # | | _____| | | # | | / | | # | | / | | # | | | $ul2.111 (vlan) | | # | | + 2001:db8:10::2/64 | | # | | ^ | | # | | | | | # | | '------. | | # | | dummy2 + | | # | | 2001:db8:3::2/64 | | # | | ^ | | # | | | | | # | | | | | # | | VRF v$ul2 | | | # | +---------------------|-------------------+ | # | | | # | +---------------------|-------------------+ | # | | VRF v$ol2 | | | # | | | | | # | | v | | # | | g2a (ip6gre) + | | # | | loc=2001:db8:3::2 | | # | | rem=2001:db8:3::1 | | # | | tos=inherit | | # | | | | # | | $ol2 + | | # | | 203.0.113.2/24 | | | # | | 2001:db8:2::2/64 | | | # | +---------------------|-------------------+ | # +-----------------------|---------------------+ # | # +-----------------------|--------+ # | H2 | | # | $h2 + | # | 203.0.113.1/24 | # | 2001:db8:2::1/64 | # +--------------------------------+ source lib.sh source tc_common.sh h1_create() { simple_if_init $h1 198.51.100.1/24 2001:db8:1::1/64 ip route add vrf v$h1 203.0.113.0/24 via 198.51.100.2 ip -6 route add vrf v$h1 2001:db8:2::/64 via 2001:db8:1::2 } h1_destroy() { ip -6 route del vrf v$h1 2001:db8:2::/64 via 2001:db8:1::2 ip route del vrf v$h1 203.0.113.0/24 via 198.51.100.2 simple_if_fini $h1 198.51.100.1/24 2001:db8:1::1/64 } h2_create() { simple_if_init $h2 203.0.113.1/24 2001:db8:2::1/64 ip route add vrf v$h2 198.51.100.0/24 via 203.0.113.2 ip -6 route add vrf v$h2 2001:db8:1::/64 via 2001:db8:2::2 } h2_destroy() { ip -6 route del vrf v$h2 2001:db8:1::/64 via 2001:db8:2::2 ip route del vrf v$h2 198.51.100.0/24 via 203.0.113.2 simple_if_fini $h2 203.0.113.1/24 2001:db8:2::1/64 } sw1_flat_create() { local ol1=$1; shift local ul1=$1; shift ip link set dev $ol1 up __addr_add_del $ol1 add 198.51.100.2/24 2001:db8:1::2/64 ip link set dev $ul1 up vlan_create $ul1 111 "" 2001:db8:10::1/64 tunnel_create g1a ip6gre 2001:db8:3::1 2001:db8:3::2 tos inherit \ ttl inherit "$@" ip link set dev g1a up __addr_add_del g1a add "2001:db8:3::1/128" ip -6 route add 2001:db8:3::2/128 via 2001:db8:10::2 ip route add 203.0.113.0/24 dev g1a ip -6 route add 2001:db8:2::/64 dev g1a } sw1_flat_destroy() { local ol1=$1; shift local ul1=$1; shift ip -6 route del 2001:db8:2::/64 ip route del 203.0.113.0/24 ip -6 route del 2001:db8:3::2/128 via 2001:db8:10::2 __simple_if_fini g1a 2001:db8:3::1/128 tunnel_destroy g1a vlan_destroy $ul1 111 __simple_if_fini $ul1 __simple_if_fini $ol1 198.51.100.2/24 2001:db8:1::2/64 } sw2_flat_create() { local ol2=$1; shift local ul2=$1; shift simple_if_init $ol2 203.0.113.2/24 2001:db8:2::2/64 __simple_if_init $ul2 v$ol2 vlan_create $ul2 111 v$ol2 2001:db8:10::2/64 tunnel_create g2a ip6gre 2001:db8:3::2 2001:db8:3::1 tos inherit \ ttl inherit dev v$ol2 "$@" __simple_if_init g2a v$ol2 2001:db8:3::2/128 # Replace neighbor to avoid 1 dropped packet due to "unresolved neigh" ip neigh replace dev $ol2 203.0.113.1 lladdr $(mac_get $h2) ip -6 neigh replace dev $ol2 2001:db8:2::1 lladdr $(mac_get $h2) ip -6 route add vrf v$ol2 2001:db8:3::1/128 via 2001:db8:10::1 ip route add vrf v$ol2 198.51.100.0/24 dev g2a ip -6 route add vrf v$ol2 2001:db8:1::/64 dev g2a } sw2_flat_destroy() { local ol2=$1; shift local ul2=$1; shift ip -6 route del vrf v$ol2 2001:db8:2::/64 ip route del vrf v$ol2 198.51.100.0/24 ip -6 route del vrf v$ol2 2001:db8:3::1/128 via 2001:db8:10::1 __simple_if_fini g2a 2001:db8:3::2/128 tunnel_destroy g2a vlan_destroy $ul2 111 __simple_if_fini $ul2 simple_if_fini $ol2 203.0.113.2/24 2001:db8:2::2/64 } sw1_hierarchical_create() { local ol1=$1; shift local ul1=$1; shift simple_if_init $ol1 198.51.100.2/24 2001:db8:1::2/64 simple_if_init $ul1 ip link add name dummy1 type dummy __simple_if_init dummy1 v$ul1 2001:db8:3::1/64 vlan_create $ul1 111 v$ul1 2001:db8:10::1/64 tunnel_create g1a ip6gre 2001:db8:3::1 2001:db8:3::2 tos inherit \ ttl inherit dev dummy1 "$@" ip link set dev g1a master v$ol1 ip -6 route add vrf v$ul1 2001:db8:3::2/128 via 2001:db8:10::2 ip route add vrf v$ol1 203.0.113.0/24 dev g1a ip -6 route add vrf v$ol1 2001:db8:2::/64 dev g1a } sw1_hierarchical_destroy() { local ol1=$1; shift local ul1=$1; shift ip -6 route del vrf v$ol1 2001:db8:2::/64 ip route del vrf v$ol1 203.0.113.0/24 ip -6 route del vrf v$ul1 2001:db8:3::2/128 tunnel_destroy g1a vlan_destroy $ul1 111 __simple_if_fini dummy1 2001:db8:3::1/64 ip link del dev dummy1 simple_if_fini $ul1 simple_if_fini $ol1 198.51.100.2/24 2001:db8:1::2/64 } sw2_hierarchical_create() { local ol2=$1; shift local ul2=$1; shift simple_if_init $ol2 203.0.113.2/24 2001:db8:2::2/64 simple_if_init $ul2 ip link add name dummy2 type dummy __simple_if_init dummy2 v$ul2 2001:db8:3::2/64 vlan_create $ul2 111 v$ul2 2001:db8:10::2/64 tunnel_create g2a ip6gre 2001:db8:3::2 2001:db8:3::1 tos inherit \ ttl inherit dev dummy2 "$@" ip link set dev g2a master v$ol2 # Replace neighbor to avoid 1 dropped packet due to "unresolved neigh" ip neigh replace dev $ol2 203.0.113.1 lladdr $(mac_get $h2) ip -6 neigh replace dev $ol2 2001:db8:2::1 lladdr $(mac_get $h2) ip -6 route add vrf v$ul2 2001:db8:3::1/128 via 2001:db8:10::1 ip route add vrf v$ol2 198.51.100.0/24 dev g2a ip -6 route add vrf v$ol2 2001:db8:1::/64 dev g2a } sw2_hierarchical_destroy() { local ol2=$1; shift local ul2=$1; shift ip -6 route del vrf v$ol2 2001:db8:2::/64 ip route del vrf v$ol2 198.51.100.0/24 ip -6 route del vrf v$ul2 2001:db8:3::1/128 tunnel_destroy g2a vlan_destroy $ul2 111 __simple_if_fini dummy2 2001:db8:3::2/64 ip link del dev dummy2 simple_if_fini $ul2 simple_if_fini $ol2 203.0.113.2/24 2001:db8:2::2/64 } test_traffic_ip4ip6() { RET=0 h1mac=$(mac_get $h1) ol1mac=$(mac_get $ol1) tc qdisc add dev $ul1 clsact tc filter add dev $ul1 egress proto all pref 1 handle 101 \ flower $TC_FLAG action pass tc qdisc add dev $ol2 clsact tc filter add dev $ol2 egress protocol ipv4 pref 1 handle 101 \ flower $TC_FLAG dst_ip 203.0.113.1 action pass $MZ $h1 -c 1000 -p 64 -a $h1mac -b $ol1mac -A 198.51.100.1 \ -B 203.0.113.1 -t ip -q -d 1msec # Check ports after encap and after decap. tc_check_at_least_x_packets "dev $ul1 egress" 101 1000 check_err $? "Packets did not go through $ul1, tc_flag = $TC_FLAG" tc_check_at_least_x_packets "dev $ol2 egress" 101 1000 check_err $? "Packets did not go through $ol2, tc_flag = $TC_FLAG" log_test "$@" tc filter del dev $ol2 egress protocol ipv4 pref 1 handle 101 flower tc qdisc del dev $ol2 clsact tc filter del dev $ul1 egress proto all pref 1 handle 101 flower tc qdisc del dev $ul1 clsact } test_traffic_ip6ip6() { RET=0 h1mac=$(mac_get $h1) ol1mac=$(mac_get $ol1) tc qdisc add dev $ul1 clsact tc filter add dev $ul1 egress proto all pref 1 handle 101 \ flower $TC_FLAG action pass tc qdisc add dev $ol2 clsact tc filter add dev $ol2 egress protocol ipv6 pref 1 handle 101 \ flower $TC_FLAG dst_ip 2001:db8:2::1 action pass $MZ -6 $h1 -c 1000 -p 64 -a $h1mac -b $ol1mac -A 2001:db8:1::1 \ -B 2001:db8:2::1 -t ip -q -d 1msec # Check ports after encap and after decap. tc_check_at_least_x_packets "dev $ul1 egress" 101 1000 check_err $? "Packets did not go through $ul1, tc_flag = $TC_FLAG" tc_check_at_least_x_packets "dev $ol2 egress" 101 1000 check_err $? "Packets did not go through $ol2, tc_flag = $TC_FLAG" log_test "$@" tc filter del dev $ol2 egress protocol ipv6 pref 1 handle 101 flower tc qdisc del dev $ol2 clsact tc filter del dev $ul1 egress proto all pref 1 handle 101 flower tc qdisc del dev $ul1 clsact } topo_mtu_change() { local mtu=$1 ip link set mtu $mtu dev $h1 ip link set mtu $mtu dev $ol1 ip link set mtu $mtu dev g1a ip link set mtu $mtu dev $ul1 ip link set mtu $mtu dev $ul1.111 ip link set mtu $mtu dev $h2 ip link set mtu $mtu dev $ol2 ip link set mtu $mtu dev g2a ip link set mtu $mtu dev $ul2 ip link set mtu $mtu dev $ul2.111 } test_mtu_change() { RET=0 ping6_do $h1 2001:db8:2::1 "-s 1800 -w 3" check_fail $? "ping GRE IPv6 should not pass with packet size 1800" RET=0 topo_mtu_change 2000 ping6_do $h1 2001:db8:2::1 "-s 1800 -w 3" check_err $? log_test "ping GRE IPv6, packet size 1800 after MTU change" } |