Loading...
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 | #!/bin/bash # SPDX-License-Identifier: GPL-2.0 # 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 + | # | 192.0.2.1/28 | | # +-------------------|-----+ # | # +-------------------|-----+ # | SW1 | | # | $ol1 + | # | 192.0.2.2/28 | # | | # | + g1a (gre) | # | loc=192.0.2.65 | # | rem=192.0.2.66 --. | # | tos=inherit | | # | .------------------' | # | | | # | v | # | + $ul1.111 (vlan) | # | | 192.0.2.129/28 | # | \ | # | \_______ | # | | | # |VRF default + $ul1 | # +------------|------------+ # | # +------------|------------+ # | SW2 + $ul2 | # | _______| | # | / | # | / | # | + $ul2.111 (vlan) | # | ^ 192.0.2.130/28 | # | | | # | | | # | '------------------. | # | + g2a (gre) | | # | loc=192.0.2.66 | | # | rem=192.0.2.65 --' | # | tos=inherit | # | | # | $ol2 + | # | 192.0.2.17/28 | | # | VRF v$ol2 | | # +-------------------|-----+ # | # +-------------------|-----+ # | H2 | | # | $h2 + | # | 192.0.2.18/28 | # +-------------------------+ # # Hierarchical model: # The tunnel is bound to a device in a different VRF # # +---------------------------+ # | H1 | # | $h1 + | # | 192.0.2.1/28 | | # +-------------------|-------+ # | # +-------------------|-------+ # | SW1 | | # | +-----------------|-----+ | # | | $ol1 + | | # | | 192.0.2.2/28 | | # | | | | # | | + g1a (gre) | | # | | rem=192.0.2.66 | | # | | tos=inherit | | # | | loc=192.0.2.65 | | # | | ^ | | # | | VRF v$ol1 | | | # | +-----------|-----------+ | # | | | # | +-----------|-----------+ | # | | VRF v$ul1 | | | # | | | | | # | | | | | # | | v | | # | | dummy1 + | | # | | 192.0.2.65 | | # | | .-------' | | # | | | | | # | | v | | # | | + $ul1.111 (vlan) | | # | | | 192.0.2.129/28 | | # | | \ | | # | | \_____ | | # | | | | | # | | + $ul1 | | # | +----------|------------+ | # +------------|--------------+ # | # +------------|--------------+ # | SW2 | | # | +----------|------------+ | # | | + $ul2 | | # | | _____| | | # | | / | | # | | / | | # | | | $ul2.111 (vlan) | | # | | + 192.0.2.130/28 | | # | | ^ | | # | | | | | # | | '-------. | | # | | dummy2 + | | # | | 192.0.2.66 | | # | | ^ | | # | | | | | # | | | | | # | | VRF v$ul2 | | | # | +-----------|-----------+ | # | | | # | +-----------|-----------+ | # | | VRF v$ol2 | | | # | | | | | # | | v | | # | | g2a (gre)+ | | # | | loc=192.0.2.66 | | # | | rem=192.0.2.65 | | # | | tos=inherit | | # | | | | # | | $ol2 + | | # | | 192.0.2.17/28 | | | # | +-----------------|-----+ | # +-------------------|-------+ # | # +-------------------|-------+ # | H2 | | # | $h2 + | # | 192.0.2.18/28 | # +---------------------------+ source lib.sh h1_create() { simple_if_init $h1 192.0.2.1/28 2001:db8:1::1/64 ip route add vrf v$h1 192.0.2.16/28 via 192.0.2.2 } h1_destroy() { ip route del vrf v$h1 192.0.2.16/28 via 192.0.2.2 simple_if_fini $h1 192.0.2.1/28 } h2_create() { simple_if_init $h2 192.0.2.18/28 ip route add vrf v$h2 192.0.2.0/28 via 192.0.2.17 } h2_destroy() { ip route del vrf v$h2 192.0.2.0/28 via 192.0.2.17 simple_if_fini $h2 192.0.2.18/28 } sw1_flat_create() { local type=$1; shift local ol1=$1; shift local ul1=$1; shift ip link set dev $ol1 up __addr_add_del $ol1 add "192.0.2.2/28" ip link set dev $ul1 up vlan_create $ul1 111 "" 192.0.2.129/28 tunnel_create g1a $type 192.0.2.65 192.0.2.66 tos inherit "$@" ip link set dev g1a up __addr_add_del g1a add "192.0.2.65/32" ip route add 192.0.2.66/32 via 192.0.2.130 ip route add 192.0.2.16/28 nexthop dev g1a } sw1_flat_destroy() { local ol1=$1; shift local ul1=$1; shift ip route del 192.0.2.16/28 ip route del 192.0.2.66/32 via 192.0.2.130 __simple_if_fini g1a 192.0.2.65/32 tunnel_destroy g1a vlan_destroy $ul1 111 __simple_if_fini $ul1 __simple_if_fini $ol1 192.0.2.2/28 } sw2_flat_create() { local type=$1; shift local ol2=$1; shift local ul2=$1; shift simple_if_init $ol2 192.0.2.17/28 __simple_if_init $ul2 v$ol2 vlan_create $ul2 111 v$ol2 192.0.2.130/28 tunnel_create g2a $type 192.0.2.66 192.0.2.65 tos inherit dev v$ol2 \ "$@" __simple_if_init g2a v$ol2 192.0.2.66/32 ip route add vrf v$ol2 192.0.2.65/32 via 192.0.2.129 ip route add vrf v$ol2 192.0.2.0/28 nexthop dev g2a } sw2_flat_destroy() { local ol2=$1; shift local ul2=$1; shift ip route del vrf v$ol2 192.0.2.0/28 ip route del vrf v$ol2 192.0.2.65/32 via 192.0.2.129 __simple_if_fini g2a 192.0.2.66/32 tunnel_destroy g2a vlan_destroy $ul2 111 __simple_if_fini $ul2 simple_if_fini $ol2 192.0.2.17/28 } sw1_hierarchical_create() { local type=$1; shift local ol1=$1; shift local ul1=$1; shift simple_if_init $ol1 192.0.2.2/28 simple_if_init $ul1 ip link add name dummy1 type dummy __simple_if_init dummy1 v$ul1 192.0.2.65/32 vlan_create $ul1 111 v$ul1 192.0.2.129/28 tunnel_create g1a $type 192.0.2.65 192.0.2.66 tos inherit dev dummy1 \ "$@" ip link set dev g1a master v$ol1 ip route add vrf v$ul1 192.0.2.66/32 via 192.0.2.130 ip route add vrf v$ol1 192.0.2.16/28 nexthop dev g1a } sw1_hierarchical_destroy() { local ol1=$1; shift local ul1=$1; shift ip route del vrf v$ol1 192.0.2.16/28 ip route del vrf v$ul1 192.0.2.66/32 tunnel_destroy g1a vlan_destroy $ul1 111 __simple_if_fini dummy1 192.0.2.65/32 ip link del dev dummy1 simple_if_fini $ul1 simple_if_fini $ol1 192.0.2.2/28 } sw2_hierarchical_create() { local type=$1; shift local ol2=$1; shift local ul2=$1; shift simple_if_init $ol2 192.0.2.17/28 simple_if_init $ul2 ip link add name dummy2 type dummy __simple_if_init dummy2 v$ul2 192.0.2.66/32 vlan_create $ul2 111 v$ul2 192.0.2.130/28 tunnel_create g2a $type 192.0.2.66 192.0.2.65 tos inherit dev dummy2 \ "$@" ip link set dev g2a master v$ol2 ip route add vrf v$ul2 192.0.2.65/32 via 192.0.2.129 ip route add vrf v$ol2 192.0.2.0/28 nexthop dev g2a } sw2_hierarchical_destroy() { local ol2=$1; shift local ul2=$1; shift ip route del vrf v$ol2 192.0.2.0/28 ip route del vrf v$ul2 192.0.2.65/32 tunnel_destroy g2a vlan_destroy $ul2 111 __simple_if_fini dummy2 192.0.2.66/32 ip link del dev dummy2 simple_if_fini $ul2 simple_if_fini $ol2 192.0.2.17/28 } 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() { local encap=$1; shift RET=0 ping_do $h1 192.0.2.18 "-s 1800 -w 3" check_fail $? "ping $encap should not pass with size 1800" RET=0 topo_mtu_change 2000 ping_do $h1 192.0.2.18 "-s 1800 -w 3" check_err $? log_test "ping $encap packet size 1800 after MTU change" } |