Neale Ranns | 39f9d8b | 2017-02-16 21:57:05 -0800 | [diff] [blame] | 1 | #!/usr/bin/env python |
| 2 | |
| 3 | import unittest |
| 4 | from socket import AF_INET, AF_INET6, inet_pton |
| 5 | |
| 6 | from framework import VppTestCase, VppTestRunner |
| 7 | from vpp_neighbor import VppNeighbor, find_nbr |
Neale Ranns | 1500254 | 2017-09-10 04:39:11 -0700 | [diff] [blame] | 8 | from vpp_ip_route import VppIpRoute, VppRoutePath, find_route, \ |
Neale Ranns | cd35e53 | 2018-08-31 02:51:45 -0700 | [diff] [blame] | 9 | VppIpTable, DpoProto |
Neale Ranns | 3702930 | 2018-08-10 05:30:06 -0700 | [diff] [blame] | 10 | from vpp_papi import VppEnum |
Neale Ranns | 39f9d8b | 2017-02-16 21:57:05 -0800 | [diff] [blame] | 11 | |
Paul Vinciguerra | a7427ec | 2019-03-10 10:04:23 -0700 | [diff] [blame] | 12 | import scapy.compat |
Neale Ranns | 39f9d8b | 2017-02-16 21:57:05 -0800 | [diff] [blame] | 13 | from scapy.packet import Raw |
Neale Ranns | 30d0fd4 | 2017-05-30 07:30:04 -0700 | [diff] [blame] | 14 | from scapy.layers.l2 import Ether, ARP, Dot1Q |
Neale Ranns | 39f9d8b | 2017-02-16 21:57:05 -0800 | [diff] [blame] | 15 | from scapy.layers.inet import IP, UDP |
Neale Ranns | cd35e53 | 2018-08-31 02:51:45 -0700 | [diff] [blame] | 16 | from scapy.layers.inet6 import IPv6 |
Neale Ranns | 37be736 | 2017-02-21 17:30:26 -0800 | [diff] [blame] | 17 | from scapy.contrib.mpls import MPLS |
Neale Ranns | 1426039 | 2018-09-28 05:00:57 -0700 | [diff] [blame] | 18 | from scapy.layers.inet6 import IPv6 |
Neale Ranns | 39f9d8b | 2017-02-16 21:57:05 -0800 | [diff] [blame] | 19 | |
| 20 | # not exported by scapy, so redefined here |
| 21 | arp_opts = {"who-has": 1, "is-at": 2} |
| 22 | |
| 23 | |
| 24 | class ARPTestCase(VppTestCase): |
| 25 | """ ARP Test Case """ |
| 26 | |
| 27 | def setUp(self): |
| 28 | super(ARPTestCase, self).setUp() |
| 29 | |
| 30 | # create 3 pg interfaces |
| 31 | self.create_pg_interfaces(range(4)) |
| 32 | |
| 33 | # pg0 configured with ip4 and 6 addresses used for input |
| 34 | # pg1 configured with ip4 and 6 addresses used for output |
| 35 | # pg2 is unnumbered to pg0 |
| 36 | for i in self.pg_interfaces: |
| 37 | i.admin_up() |
| 38 | |
| 39 | self.pg0.config_ip4() |
| 40 | self.pg0.config_ip6() |
| 41 | self.pg0.resolve_arp() |
| 42 | |
| 43 | self.pg1.config_ip4() |
| 44 | self.pg1.config_ip6() |
| 45 | |
| 46 | # pg3 in a different VRF |
Neale Ranns | 1500254 | 2017-09-10 04:39:11 -0700 | [diff] [blame] | 47 | self.tbl = VppIpTable(self, 1) |
| 48 | self.tbl.add_vpp_config() |
| 49 | |
Neale Ranns | 39f9d8b | 2017-02-16 21:57:05 -0800 | [diff] [blame] | 50 | self.pg3.set_table_ip4(1) |
| 51 | self.pg3.config_ip4() |
| 52 | |
Neale Ranns | 4008ac9 | 2017-02-13 23:20:04 -0800 | [diff] [blame] | 53 | def tearDown(self): |
Neale Ranns | 4b919a5 | 2017-03-11 05:55:21 -0800 | [diff] [blame] | 54 | self.pg0.unconfig_ip4() |
| 55 | self.pg0.unconfig_ip6() |
| 56 | |
| 57 | self.pg1.unconfig_ip4() |
| 58 | self.pg1.unconfig_ip6() |
| 59 | |
| 60 | self.pg3.unconfig_ip4() |
Neale Ranns | 1500254 | 2017-09-10 04:39:11 -0700 | [diff] [blame] | 61 | self.pg3.set_table_ip4(0) |
Neale Ranns | 4b919a5 | 2017-03-11 05:55:21 -0800 | [diff] [blame] | 62 | |
Neale Ranns | 4008ac9 | 2017-02-13 23:20:04 -0800 | [diff] [blame] | 63 | for i in self.pg_interfaces: |
Neale Ranns | 4008ac9 | 2017-02-13 23:20:04 -0800 | [diff] [blame] | 64 | i.admin_down() |
| 65 | |
Neale Ranns | 1500254 | 2017-09-10 04:39:11 -0700 | [diff] [blame] | 66 | super(ARPTestCase, self).tearDown() |
| 67 | |
Neale Ranns | 39f9d8b | 2017-02-16 21:57:05 -0800 | [diff] [blame] | 68 | def verify_arp_req(self, rx, smac, sip, dip): |
| 69 | ether = rx[Ether] |
| 70 | self.assertEqual(ether.dst, "ff:ff:ff:ff:ff:ff") |
| 71 | self.assertEqual(ether.src, smac) |
| 72 | |
| 73 | arp = rx[ARP] |
| 74 | self.assertEqual(arp.hwtype, 1) |
| 75 | self.assertEqual(arp.ptype, 0x800) |
| 76 | self.assertEqual(arp.hwlen, 6) |
| 77 | self.assertEqual(arp.plen, 4) |
| 78 | self.assertEqual(arp.op, arp_opts["who-has"]) |
| 79 | self.assertEqual(arp.hwsrc, smac) |
| 80 | self.assertEqual(arp.hwdst, "00:00:00:00:00:00") |
| 81 | self.assertEqual(arp.psrc, sip) |
| 82 | self.assertEqual(arp.pdst, dip) |
| 83 | |
| 84 | def verify_arp_resp(self, rx, smac, dmac, sip, dip): |
| 85 | ether = rx[Ether] |
| 86 | self.assertEqual(ether.dst, dmac) |
| 87 | self.assertEqual(ether.src, smac) |
| 88 | |
| 89 | arp = rx[ARP] |
| 90 | self.assertEqual(arp.hwtype, 1) |
| 91 | self.assertEqual(arp.ptype, 0x800) |
| 92 | self.assertEqual(arp.hwlen, 6) |
| 93 | self.assertEqual(arp.plen, 4) |
| 94 | self.assertEqual(arp.op, arp_opts["is-at"]) |
| 95 | self.assertEqual(arp.hwsrc, smac) |
| 96 | self.assertEqual(arp.hwdst, dmac) |
| 97 | self.assertEqual(arp.psrc, sip) |
| 98 | self.assertEqual(arp.pdst, dip) |
| 99 | |
Matthew Smith | cb9ab47 | 2017-05-16 21:35:56 -0500 | [diff] [blame] | 100 | def verify_arp_vrrp_resp(self, rx, smac, dmac, sip, dip): |
| 101 | ether = rx[Ether] |
| 102 | self.assertEqual(ether.dst, dmac) |
| 103 | self.assertEqual(ether.src, smac) |
| 104 | |
| 105 | arp = rx[ARP] |
| 106 | self.assertEqual(arp.hwtype, 1) |
| 107 | self.assertEqual(arp.ptype, 0x800) |
| 108 | self.assertEqual(arp.hwlen, 6) |
| 109 | self.assertEqual(arp.plen, 4) |
| 110 | self.assertEqual(arp.op, arp_opts["is-at"]) |
| 111 | self.assertNotEqual(arp.hwsrc, smac) |
| 112 | self.assertTrue("00:00:5e:00:01" in arp.hwsrc or |
| 113 | "00:00:5E:00:01" in arp.hwsrc) |
| 114 | self.assertEqual(arp.hwdst, dmac) |
| 115 | self.assertEqual(arp.psrc, sip) |
| 116 | self.assertEqual(arp.pdst, dip) |
| 117 | |
Neale Ranns | 39f9d8b | 2017-02-16 21:57:05 -0800 | [diff] [blame] | 118 | def verify_ip(self, rx, smac, dmac, sip, dip): |
| 119 | ether = rx[Ether] |
| 120 | self.assertEqual(ether.dst, dmac) |
| 121 | self.assertEqual(ether.src, smac) |
| 122 | |
| 123 | ip = rx[IP] |
| 124 | self.assertEqual(ip.src, sip) |
| 125 | self.assertEqual(ip.dst, dip) |
| 126 | |
Neale Ranns | 37be736 | 2017-02-21 17:30:26 -0800 | [diff] [blame] | 127 | def verify_ip_o_mpls(self, rx, smac, dmac, label, sip, dip): |
| 128 | ether = rx[Ether] |
| 129 | self.assertEqual(ether.dst, dmac) |
| 130 | self.assertEqual(ether.src, smac) |
| 131 | |
| 132 | mpls = rx[MPLS] |
| 133 | self.assertTrue(mpls.label, label) |
| 134 | |
| 135 | ip = rx[IP] |
| 136 | self.assertEqual(ip.src, sip) |
| 137 | self.assertEqual(ip.dst, dip) |
| 138 | |
Neale Ranns | 39f9d8b | 2017-02-16 21:57:05 -0800 | [diff] [blame] | 139 | def test_arp(self): |
| 140 | """ ARP """ |
| 141 | |
| 142 | # |
| 143 | # Generate some hosts on the LAN |
| 144 | # |
Neale Ranns | ca19361 | 2017-06-14 06:50:08 -0700 | [diff] [blame] | 145 | self.pg1.generate_remote_hosts(11) |
Neale Ranns | 39f9d8b | 2017-02-16 21:57:05 -0800 | [diff] [blame] | 146 | |
| 147 | # |
| 148 | # Send IP traffic to one of these unresolved hosts. |
| 149 | # expect the generation of an ARP request |
| 150 | # |
| 151 | p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / |
| 152 | IP(src=self.pg0.remote_ip4, dst=self.pg1._remote_hosts[1].ip4) / |
| 153 | UDP(sport=1234, dport=1234) / |
| 154 | Raw()) |
| 155 | |
| 156 | self.pg0.add_stream(p) |
| 157 | self.pg_enable_capture(self.pg_interfaces) |
| 158 | self.pg_start() |
| 159 | |
| 160 | rx = self.pg1.get_capture(1) |
| 161 | |
| 162 | self.verify_arp_req(rx[0], |
| 163 | self.pg1.local_mac, |
| 164 | self.pg1.local_ip4, |
| 165 | self.pg1._remote_hosts[1].ip4) |
| 166 | |
| 167 | # |
| 168 | # And a dynamic ARP entry for host 1 |
| 169 | # |
| 170 | dyn_arp = VppNeighbor(self, |
| 171 | self.pg1.sw_if_index, |
| 172 | self.pg1.remote_hosts[1].mac, |
| 173 | self.pg1.remote_hosts[1].ip4) |
| 174 | dyn_arp.add_vpp_config() |
| 175 | |
| 176 | # |
| 177 | # now we expect IP traffic forwarded |
| 178 | # |
| 179 | dyn_p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / |
| 180 | IP(src=self.pg0.remote_ip4, |
| 181 | dst=self.pg1._remote_hosts[1].ip4) / |
| 182 | UDP(sport=1234, dport=1234) / |
| 183 | Raw()) |
| 184 | |
| 185 | self.pg0.add_stream(dyn_p) |
| 186 | self.pg_enable_capture(self.pg_interfaces) |
| 187 | self.pg_start() |
| 188 | |
| 189 | rx = self.pg1.get_capture(1) |
| 190 | |
| 191 | self.verify_ip(rx[0], |
| 192 | self.pg1.local_mac, |
| 193 | self.pg1.remote_hosts[1].mac, |
| 194 | self.pg0.remote_ip4, |
| 195 | self.pg1._remote_hosts[1].ip4) |
| 196 | |
| 197 | # |
| 198 | # And a Static ARP entry for host 2 |
| 199 | # |
| 200 | static_arp = VppNeighbor(self, |
| 201 | self.pg1.sw_if_index, |
| 202 | self.pg1.remote_hosts[2].mac, |
| 203 | self.pg1.remote_hosts[2].ip4, |
| 204 | is_static=1) |
| 205 | static_arp.add_vpp_config() |
| 206 | |
| 207 | static_p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / |
| 208 | IP(src=self.pg0.remote_ip4, |
| 209 | dst=self.pg1._remote_hosts[2].ip4) / |
| 210 | UDP(sport=1234, dport=1234) / |
| 211 | Raw()) |
| 212 | |
| 213 | self.pg0.add_stream(static_p) |
| 214 | self.pg_enable_capture(self.pg_interfaces) |
| 215 | self.pg_start() |
| 216 | |
| 217 | rx = self.pg1.get_capture(1) |
| 218 | |
| 219 | self.verify_ip(rx[0], |
| 220 | self.pg1.local_mac, |
| 221 | self.pg1.remote_hosts[2].mac, |
| 222 | self.pg0.remote_ip4, |
| 223 | self.pg1._remote_hosts[2].ip4) |
| 224 | |
| 225 | # |
| 226 | # flap the link. dynamic ARPs get flush, statics don't |
| 227 | # |
| 228 | self.pg1.admin_down() |
| 229 | self.pg1.admin_up() |
| 230 | |
| 231 | self.pg0.add_stream(static_p) |
| 232 | self.pg_enable_capture(self.pg_interfaces) |
| 233 | self.pg_start() |
| 234 | rx = self.pg1.get_capture(1) |
| 235 | |
| 236 | self.verify_ip(rx[0], |
| 237 | self.pg1.local_mac, |
| 238 | self.pg1.remote_hosts[2].mac, |
| 239 | self.pg0.remote_ip4, |
| 240 | self.pg1._remote_hosts[2].ip4) |
| 241 | |
| 242 | self.pg0.add_stream(dyn_p) |
| 243 | self.pg_enable_capture(self.pg_interfaces) |
| 244 | self.pg_start() |
| 245 | |
| 246 | rx = self.pg1.get_capture(1) |
| 247 | self.verify_arp_req(rx[0], |
| 248 | self.pg1.local_mac, |
| 249 | self.pg1.local_ip4, |
| 250 | self.pg1._remote_hosts[1].ip4) |
| 251 | |
| 252 | # |
| 253 | # Send an ARP request from one of the so-far unlearned remote hosts |
| 254 | # |
| 255 | p = (Ether(dst="ff:ff:ff:ff:ff:ff", |
| 256 | src=self.pg1._remote_hosts[3].mac) / |
| 257 | ARP(op="who-has", |
| 258 | hwsrc=self.pg1._remote_hosts[3].mac, |
| 259 | pdst=self.pg1.local_ip4, |
| 260 | psrc=self.pg1._remote_hosts[3].ip4)) |
| 261 | |
| 262 | self.pg1.add_stream(p) |
| 263 | self.pg_enable_capture(self.pg_interfaces) |
| 264 | self.pg_start() |
| 265 | |
| 266 | rx = self.pg1.get_capture(1) |
| 267 | self.verify_arp_resp(rx[0], |
| 268 | self.pg1.local_mac, |
| 269 | self.pg1._remote_hosts[3].mac, |
| 270 | self.pg1.local_ip4, |
| 271 | self.pg1._remote_hosts[3].ip4) |
| 272 | |
| 273 | # |
| 274 | # VPP should have learned the mapping for the remote host |
| 275 | # |
| 276 | self.assertTrue(find_nbr(self, |
| 277 | self.pg1.sw_if_index, |
| 278 | self.pg1._remote_hosts[3].ip4)) |
Neale Ranns | 4b919a5 | 2017-03-11 05:55:21 -0800 | [diff] [blame] | 279 | # |
| 280 | # Fire in an ARP request before the interface becomes IP enabled |
| 281 | # |
| 282 | self.pg2.generate_remote_hosts(4) |
| 283 | |
| 284 | p = (Ether(dst="ff:ff:ff:ff:ff:ff", src=self.pg2.remote_mac) / |
| 285 | ARP(op="who-has", |
| 286 | hwsrc=self.pg2.remote_mac, |
| 287 | pdst=self.pg1.local_ip4, |
| 288 | psrc=self.pg2.remote_hosts[3].ip4)) |
Neale Ranns | 30d0fd4 | 2017-05-30 07:30:04 -0700 | [diff] [blame] | 289 | pt = (Ether(dst="ff:ff:ff:ff:ff:ff", src=self.pg2.remote_mac) / |
| 290 | Dot1Q(vlan=0) / |
| 291 | ARP(op="who-has", |
| 292 | hwsrc=self.pg2.remote_mac, |
| 293 | pdst=self.pg1.local_ip4, |
| 294 | psrc=self.pg2.remote_hosts[3].ip4)) |
Neale Ranns | 4b919a5 | 2017-03-11 05:55:21 -0800 | [diff] [blame] | 295 | self.send_and_assert_no_replies(self.pg2, p, |
| 296 | "interface not IP enabled") |
| 297 | |
| 298 | # |
| 299 | # Make pg2 un-numbered to pg1 |
| 300 | # |
| 301 | self.pg2.set_unnumbered(self.pg1.sw_if_index) |
| 302 | |
Neale Ranns | 404d88e | 2018-08-08 06:37:33 -0700 | [diff] [blame] | 303 | unnum = self.vapi.ip_unnumbered_dump() |
| 304 | self.assertEqual(unnum[0].ip_sw_if_index, self.pg1.sw_if_index) |
| 305 | self.assertEqual(unnum[0].sw_if_index, self.pg2.sw_if_index) |
| 306 | |
Neale Ranns | 4b919a5 | 2017-03-11 05:55:21 -0800 | [diff] [blame] | 307 | # |
| 308 | # We should respond to ARP requests for the unnumbered to address |
| 309 | # once an attached route to the source is known |
| 310 | # |
| 311 | self.send_and_assert_no_replies( |
| 312 | self.pg2, p, |
| 313 | "ARP req for unnumbered address - no source") |
| 314 | |
| 315 | attached_host = VppIpRoute(self, self.pg2.remote_hosts[3].ip4, 32, |
| 316 | [VppRoutePath("0.0.0.0", |
| 317 | self.pg2.sw_if_index)]) |
| 318 | attached_host.add_vpp_config() |
| 319 | |
| 320 | self.pg2.add_stream(p) |
| 321 | self.pg_enable_capture(self.pg_interfaces) |
| 322 | self.pg_start() |
| 323 | |
| 324 | rx = self.pg2.get_capture(1) |
| 325 | self.verify_arp_resp(rx[0], |
| 326 | self.pg2.local_mac, |
| 327 | self.pg2.remote_mac, |
| 328 | self.pg1.local_ip4, |
| 329 | self.pg2.remote_hosts[3].ip4) |
Neale Ranns | 39f9d8b | 2017-02-16 21:57:05 -0800 | [diff] [blame] | 330 | |
Neale Ranns | 30d0fd4 | 2017-05-30 07:30:04 -0700 | [diff] [blame] | 331 | self.pg2.add_stream(pt) |
| 332 | self.pg_enable_capture(self.pg_interfaces) |
| 333 | self.pg_start() |
| 334 | |
| 335 | rx = self.pg2.get_capture(1) |
| 336 | self.verify_arp_resp(rx[0], |
| 337 | self.pg2.local_mac, |
| 338 | self.pg2.remote_mac, |
| 339 | self.pg1.local_ip4, |
| 340 | self.pg2.remote_hosts[3].ip4) |
| 341 | |
Neale Ranns | 39f9d8b | 2017-02-16 21:57:05 -0800 | [diff] [blame] | 342 | # |
Neale Ranns | 3983ac2 | 2017-03-10 11:53:27 -0800 | [diff] [blame] | 343 | # A neighbor entry that has no associated FIB-entry |
| 344 | # |
| 345 | arp_no_fib = VppNeighbor(self, |
| 346 | self.pg1.sw_if_index, |
| 347 | self.pg1.remote_hosts[4].mac, |
| 348 | self.pg1.remote_hosts[4].ip4, |
| 349 | is_no_fib_entry=1) |
| 350 | arp_no_fib.add_vpp_config() |
| 351 | |
| 352 | # |
| 353 | # check we have the neighbor, but no route |
| 354 | # |
| 355 | self.assertTrue(find_nbr(self, |
| 356 | self.pg1.sw_if_index, |
| 357 | self.pg1._remote_hosts[4].ip4)) |
| 358 | self.assertFalse(find_route(self, |
| 359 | self.pg1._remote_hosts[4].ip4, |
| 360 | 32)) |
| 361 | # |
Neale Ranns | 4b919a5 | 2017-03-11 05:55:21 -0800 | [diff] [blame] | 362 | # pg2 is unnumbered to pg1, so we can form adjacencies out of pg2 |
| 363 | # from within pg1's subnet |
Neale Ranns | 3983ac2 | 2017-03-10 11:53:27 -0800 | [diff] [blame] | 364 | # |
| 365 | arp_unnum = VppNeighbor(self, |
| 366 | self.pg2.sw_if_index, |
| 367 | self.pg1.remote_hosts[5].mac, |
| 368 | self.pg1.remote_hosts[5].ip4) |
| 369 | arp_unnum.add_vpp_config() |
| 370 | |
| 371 | p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / |
| 372 | IP(src=self.pg0.remote_ip4, |
| 373 | dst=self.pg1._remote_hosts[5].ip4) / |
| 374 | UDP(sport=1234, dport=1234) / |
| 375 | Raw()) |
| 376 | |
| 377 | self.pg0.add_stream(p) |
| 378 | self.pg_enable_capture(self.pg_interfaces) |
| 379 | self.pg_start() |
| 380 | |
| 381 | rx = self.pg2.get_capture(1) |
| 382 | |
| 383 | self.verify_ip(rx[0], |
| 384 | self.pg2.local_mac, |
| 385 | self.pg1.remote_hosts[5].mac, |
| 386 | self.pg0.remote_ip4, |
| 387 | self.pg1._remote_hosts[5].ip4) |
| 388 | |
| 389 | # |
Neale Ranns | 4b919a5 | 2017-03-11 05:55:21 -0800 | [diff] [blame] | 390 | # ARP requests from hosts in pg1's subnet sent on pg2 are replied to |
| 391 | # with the unnumbered interface's address as the source |
| 392 | # |
| 393 | p = (Ether(dst="ff:ff:ff:ff:ff:ff", src=self.pg2.remote_mac) / |
| 394 | ARP(op="who-has", |
| 395 | hwsrc=self.pg2.remote_mac, |
| 396 | pdst=self.pg1.local_ip4, |
| 397 | psrc=self.pg1.remote_hosts[6].ip4)) |
| 398 | |
| 399 | self.pg2.add_stream(p) |
| 400 | self.pg_enable_capture(self.pg_interfaces) |
| 401 | self.pg_start() |
| 402 | |
| 403 | rx = self.pg2.get_capture(1) |
| 404 | self.verify_arp_resp(rx[0], |
| 405 | self.pg2.local_mac, |
| 406 | self.pg2.remote_mac, |
| 407 | self.pg1.local_ip4, |
| 408 | self.pg1.remote_hosts[6].ip4) |
| 409 | |
| 410 | # |
| 411 | # An attached host route out of pg2 for an undiscovered hosts generates |
| 412 | # an ARP request with the unnumbered address as the source |
| 413 | # |
| 414 | att_unnum = VppIpRoute(self, self.pg1.remote_hosts[7].ip4, 32, |
| 415 | [VppRoutePath("0.0.0.0", |
| 416 | self.pg2.sw_if_index)]) |
| 417 | att_unnum.add_vpp_config() |
| 418 | |
| 419 | p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / |
| 420 | IP(src=self.pg0.remote_ip4, |
| 421 | dst=self.pg1._remote_hosts[7].ip4) / |
| 422 | UDP(sport=1234, dport=1234) / |
| 423 | Raw()) |
| 424 | |
| 425 | self.pg0.add_stream(p) |
| 426 | self.pg_enable_capture(self.pg_interfaces) |
| 427 | self.pg_start() |
| 428 | |
| 429 | rx = self.pg2.get_capture(1) |
| 430 | |
| 431 | self.verify_arp_req(rx[0], |
| 432 | self.pg2.local_mac, |
| 433 | self.pg1.local_ip4, |
| 434 | self.pg1._remote_hosts[7].ip4) |
| 435 | |
| 436 | p = (Ether(dst="ff:ff:ff:ff:ff:ff", src=self.pg2.remote_mac) / |
| 437 | ARP(op="who-has", |
| 438 | hwsrc=self.pg2.remote_mac, |
| 439 | pdst=self.pg1.local_ip4, |
| 440 | psrc=self.pg1.remote_hosts[7].ip4)) |
| 441 | |
| 442 | self.pg2.add_stream(p) |
| 443 | self.pg_enable_capture(self.pg_interfaces) |
| 444 | self.pg_start() |
| 445 | |
| 446 | rx = self.pg2.get_capture(1) |
| 447 | self.verify_arp_resp(rx[0], |
| 448 | self.pg2.local_mac, |
| 449 | self.pg2.remote_mac, |
| 450 | self.pg1.local_ip4, |
| 451 | self.pg1.remote_hosts[7].ip4) |
| 452 | |
| 453 | # |
| 454 | # An attached host route as yet unresolved out of pg2 for an |
| 455 | # undiscovered host, an ARP requests begets a response. |
| 456 | # |
| 457 | att_unnum1 = VppIpRoute(self, self.pg1.remote_hosts[8].ip4, 32, |
| 458 | [VppRoutePath("0.0.0.0", |
| 459 | self.pg2.sw_if_index)]) |
| 460 | att_unnum1.add_vpp_config() |
| 461 | |
| 462 | p = (Ether(dst="ff:ff:ff:ff:ff:ff", src=self.pg2.remote_mac) / |
| 463 | ARP(op="who-has", |
| 464 | hwsrc=self.pg2.remote_mac, |
| 465 | pdst=self.pg1.local_ip4, |
| 466 | psrc=self.pg1.remote_hosts[8].ip4)) |
| 467 | |
| 468 | self.pg2.add_stream(p) |
| 469 | self.pg_enable_capture(self.pg_interfaces) |
| 470 | self.pg_start() |
| 471 | |
| 472 | rx = self.pg2.get_capture(1) |
| 473 | self.verify_arp_resp(rx[0], |
| 474 | self.pg2.local_mac, |
| 475 | self.pg2.remote_mac, |
| 476 | self.pg1.local_ip4, |
| 477 | self.pg1.remote_hosts[8].ip4) |
| 478 | |
| 479 | # |
Neale Ranns | 30d0fd4 | 2017-05-30 07:30:04 -0700 | [diff] [blame] | 480 | # Send an ARP request from one of the so-far unlearned remote hosts |
| 481 | # with a VLAN0 tag |
| 482 | # |
| 483 | p = (Ether(dst="ff:ff:ff:ff:ff:ff", |
| 484 | src=self.pg1._remote_hosts[9].mac) / |
| 485 | Dot1Q(vlan=0) / |
| 486 | ARP(op="who-has", |
| 487 | hwsrc=self.pg1._remote_hosts[9].mac, |
| 488 | pdst=self.pg1.local_ip4, |
| 489 | psrc=self.pg1._remote_hosts[9].ip4)) |
| 490 | |
| 491 | self.pg1.add_stream(p) |
| 492 | self.pg_enable_capture(self.pg_interfaces) |
| 493 | self.pg_start() |
| 494 | |
| 495 | rx = self.pg1.get_capture(1) |
| 496 | self.verify_arp_resp(rx[0], |
| 497 | self.pg1.local_mac, |
| 498 | self.pg1._remote_hosts[9].mac, |
| 499 | self.pg1.local_ip4, |
| 500 | self.pg1._remote_hosts[9].ip4) |
| 501 | |
| 502 | # |
Paul Vinciguerra | 8feeaff | 2019-03-27 11:25:48 -0700 | [diff] [blame^] | 503 | # Add a hierarchy of routes for a host in the sub-net. |
Neale Ranns | ca19361 | 2017-06-14 06:50:08 -0700 | [diff] [blame] | 504 | # Should still get an ARP resp since the cover is attached |
| 505 | # |
| 506 | p = (Ether(dst="ff:ff:ff:ff:ff:ff", src=self.pg1.remote_mac) / |
| 507 | ARP(op="who-has", |
| 508 | hwsrc=self.pg1.remote_mac, |
| 509 | pdst=self.pg1.local_ip4, |
| 510 | psrc=self.pg1.remote_hosts[10].ip4)) |
| 511 | |
| 512 | r1 = VppIpRoute(self, self.pg1.remote_hosts[10].ip4, 30, |
| 513 | [VppRoutePath(self.pg1.remote_hosts[10].ip4, |
| 514 | self.pg1.sw_if_index)]) |
| 515 | r1.add_vpp_config() |
| 516 | |
| 517 | self.pg1.add_stream(p) |
| 518 | self.pg_enable_capture(self.pg_interfaces) |
| 519 | self.pg_start() |
| 520 | rx = self.pg1.get_capture(1) |
| 521 | self.verify_arp_resp(rx[0], |
| 522 | self.pg1.local_mac, |
| 523 | self.pg1.remote_mac, |
| 524 | self.pg1.local_ip4, |
| 525 | self.pg1.remote_hosts[10].ip4) |
| 526 | |
| 527 | r2 = VppIpRoute(self, self.pg1.remote_hosts[10].ip4, 32, |
| 528 | [VppRoutePath(self.pg1.remote_hosts[10].ip4, |
| 529 | self.pg1.sw_if_index)]) |
| 530 | r2.add_vpp_config() |
| 531 | |
| 532 | self.pg1.add_stream(p) |
| 533 | self.pg_enable_capture(self.pg_interfaces) |
| 534 | self.pg_start() |
| 535 | rx = self.pg1.get_capture(1) |
| 536 | self.verify_arp_resp(rx[0], |
| 537 | self.pg1.local_mac, |
| 538 | self.pg1.remote_mac, |
| 539 | self.pg1.local_ip4, |
| 540 | self.pg1.remote_hosts[10].ip4) |
| 541 | |
| 542 | # |
| 543 | # add an ARP entry that's not on the sub-net and so whose |
| 544 | # adj-fib fails the refinement check. then send an ARP request |
| 545 | # from that source |
| 546 | # |
| 547 | a1 = VppNeighbor(self, |
| 548 | self.pg0.sw_if_index, |
| 549 | self.pg0.remote_mac, |
| 550 | "100.100.100.50") |
| 551 | a1.add_vpp_config() |
| 552 | |
| 553 | p = (Ether(dst="ff:ff:ff:ff:ff:ff", src=self.pg0.remote_mac) / |
| 554 | ARP(op="who-has", |
| 555 | hwsrc=self.pg0.remote_mac, |
| 556 | psrc="100.100.100.50", |
| 557 | pdst=self.pg0.remote_ip4)) |
| 558 | self.send_and_assert_no_replies(self.pg0, p, |
| 559 | "ARP req for from failed adj-fib") |
| 560 | |
| 561 | # |
Neale Ranns | 39f9d8b | 2017-02-16 21:57:05 -0800 | [diff] [blame] | 562 | # ERROR Cases |
| 563 | # 1 - don't respond to ARP request for address not within the |
| 564 | # interface's sub-net |
Neale Ranns | d5b6aa1 | 2017-05-16 08:46:45 -0700 | [diff] [blame] | 565 | # 1b - nor within the unnumbered subnet |
| 566 | # 1c - nor within the subnet of a different interface |
| 567 | # |
Neale Ranns | 39f9d8b | 2017-02-16 21:57:05 -0800 | [diff] [blame] | 568 | p = (Ether(dst="ff:ff:ff:ff:ff:ff", src=self.pg0.remote_mac) / |
| 569 | ARP(op="who-has", |
| 570 | hwsrc=self.pg0.remote_mac, |
| 571 | pdst="10.10.10.3", |
| 572 | psrc=self.pg0.remote_ip4)) |
| 573 | self.send_and_assert_no_replies(self.pg0, p, |
| 574 | "ARP req for non-local destination") |
Neale Ranns | d5b6aa1 | 2017-05-16 08:46:45 -0700 | [diff] [blame] | 575 | self.assertFalse(find_nbr(self, |
| 576 | self.pg0.sw_if_index, |
| 577 | "10.10.10.3")) |
| 578 | |
Neale Ranns | 4b919a5 | 2017-03-11 05:55:21 -0800 | [diff] [blame] | 579 | p = (Ether(dst="ff:ff:ff:ff:ff:ff", src=self.pg2.remote_mac) / |
| 580 | ARP(op="who-has", |
| 581 | hwsrc=self.pg2.remote_mac, |
| 582 | pdst="10.10.10.3", |
| 583 | psrc=self.pg1.remote_hosts[7].ip4)) |
| 584 | self.send_and_assert_no_replies( |
| 585 | self.pg0, p, |
| 586 | "ARP req for non-local destination - unnum") |
Neale Ranns | 39f9d8b | 2017-02-16 21:57:05 -0800 | [diff] [blame] | 587 | |
Neale Ranns | d5b6aa1 | 2017-05-16 08:46:45 -0700 | [diff] [blame] | 588 | p = (Ether(dst="ff:ff:ff:ff:ff:ff", src=self.pg0.remote_mac) / |
| 589 | ARP(op="who-has", |
| 590 | hwsrc=self.pg0.remote_mac, |
| 591 | pdst=self.pg1.local_ip4, |
| 592 | psrc=self.pg1.remote_ip4)) |
| 593 | self.send_and_assert_no_replies(self.pg0, p, |
| 594 | "ARP req diff sub-net") |
| 595 | self.assertFalse(find_nbr(self, |
| 596 | self.pg0.sw_if_index, |
| 597 | self.pg1.remote_ip4)) |
| 598 | |
Neale Ranns | 39f9d8b | 2017-02-16 21:57:05 -0800 | [diff] [blame] | 599 | # |
| 600 | # 2 - don't respond to ARP request from an address not within the |
| 601 | # interface's sub-net |
Paul Vinciguerra | 8feeaff | 2019-03-27 11:25:48 -0700 | [diff] [blame^] | 602 | # 2b - to a proxied address |
| 603 | # 2c - not within a different interface's sub-net |
Neale Ranns | 39f9d8b | 2017-02-16 21:57:05 -0800 | [diff] [blame] | 604 | p = (Ether(dst="ff:ff:ff:ff:ff:ff", src=self.pg0.remote_mac) / |
| 605 | ARP(op="who-has", |
| 606 | hwsrc=self.pg0.remote_mac, |
| 607 | psrc="10.10.10.3", |
| 608 | pdst=self.pg0.local_ip4)) |
| 609 | self.send_and_assert_no_replies(self.pg0, p, |
| 610 | "ARP req for non-local source") |
Neale Ranns | 4b919a5 | 2017-03-11 05:55:21 -0800 | [diff] [blame] | 611 | p = (Ether(dst="ff:ff:ff:ff:ff:ff", src=self.pg2.remote_mac) / |
| 612 | ARP(op="who-has", |
| 613 | hwsrc=self.pg2.remote_mac, |
| 614 | psrc="10.10.10.3", |
| 615 | pdst=self.pg0.local_ip4)) |
| 616 | self.send_and_assert_no_replies( |
| 617 | self.pg0, p, |
| 618 | "ARP req for non-local source - unnum") |
Neale Ranns | ca19361 | 2017-06-14 06:50:08 -0700 | [diff] [blame] | 619 | p = (Ether(dst="ff:ff:ff:ff:ff:ff", src=self.pg0.remote_mac) / |
| 620 | ARP(op="who-has", |
| 621 | hwsrc=self.pg0.remote_mac, |
| 622 | psrc=self.pg1.remote_ip4, |
| 623 | pdst=self.pg0.local_ip4)) |
| 624 | self.send_and_assert_no_replies(self.pg0, p, |
| 625 | "ARP req for non-local source 2c") |
Neale Ranns | 39f9d8b | 2017-02-16 21:57:05 -0800 | [diff] [blame] | 626 | |
| 627 | # |
| 628 | # 3 - don't respond to ARP request from an address that belongs to |
| 629 | # the router |
| 630 | # |
| 631 | p = (Ether(dst="ff:ff:ff:ff:ff:ff", src=self.pg0.remote_mac) / |
| 632 | ARP(op="who-has", |
| 633 | hwsrc=self.pg0.remote_mac, |
| 634 | psrc=self.pg0.local_ip4, |
| 635 | pdst=self.pg0.local_ip4)) |
| 636 | self.send_and_assert_no_replies(self.pg0, p, |
| 637 | "ARP req for non-local source") |
| 638 | |
| 639 | # |
| 640 | # 4 - don't respond to ARP requests that has mac source different |
| 641 | # from ARP request HW source |
Neale Ranns | 39f9d8b | 2017-02-16 21:57:05 -0800 | [diff] [blame] | 642 | # |
| 643 | p = (Ether(dst="ff:ff:ff:ff:ff:ff", src=self.pg0.remote_mac) / |
| 644 | ARP(op="who-has", |
| 645 | hwsrc="00:00:00:DE:AD:BE", |
| 646 | psrc=self.pg0.remote_ip4, |
| 647 | pdst=self.pg0.local_ip4)) |
| 648 | self.send_and_assert_no_replies(self.pg0, p, |
| 649 | "ARP req for non-local source") |
| 650 | |
| 651 | # |
zhaoqingling | b4c42cd | 2017-12-23 15:20:59 +0800 | [diff] [blame] | 652 | # 5 - don't respond to ARP requests for address within the |
| 653 | # interface's sub-net but not the interface's address |
| 654 | # |
| 655 | self.pg0.generate_remote_hosts(2) |
| 656 | p = (Ether(dst="ff:ff:ff:ff:ff:ff", src=self.pg0.remote_mac) / |
| 657 | ARP(op="who-has", |
| 658 | hwsrc=self.pg0.remote_mac, |
| 659 | psrc=self.pg0.remote_hosts[0].ip4, |
| 660 | pdst=self.pg0.remote_hosts[1].ip4)) |
| 661 | self.send_and_assert_no_replies(self.pg0, p, |
| 662 | "ARP req for non-local destination") |
| 663 | |
| 664 | # |
Neale Ranns | 39f9d8b | 2017-02-16 21:57:05 -0800 | [diff] [blame] | 665 | # cleanup |
| 666 | # |
| 667 | dyn_arp.remove_vpp_config() |
| 668 | static_arp.remove_vpp_config() |
Neale Ranns | 3983ac2 | 2017-03-10 11:53:27 -0800 | [diff] [blame] | 669 | self.pg2.unset_unnumbered(self.pg1.sw_if_index) |
Neale Ranns | 39f9d8b | 2017-02-16 21:57:05 -0800 | [diff] [blame] | 670 | |
Neale Ranns | 4b919a5 | 2017-03-11 05:55:21 -0800 | [diff] [blame] | 671 | # need this to flush the adj-fibs |
| 672 | self.pg2.unset_unnumbered(self.pg1.sw_if_index) |
| 673 | self.pg2.admin_down() |
Neale Ranns | ca19361 | 2017-06-14 06:50:08 -0700 | [diff] [blame] | 674 | self.pg1.admin_down() |
Neale Ranns | 4b919a5 | 2017-03-11 05:55:21 -0800 | [diff] [blame] | 675 | |
Neale Ranns | 24b170a | 2017-08-15 05:33:11 -0700 | [diff] [blame] | 676 | def test_proxy_mirror_arp(self): |
| 677 | """ Interface Mirror Proxy ARP """ |
| 678 | |
| 679 | # |
| 680 | # When VPP has an interface whose address is also applied to a TAP |
| 681 | # interface on the host, then VPP's TAP interface will be unnumbered |
| 682 | # to the 'real' interface and do proxy ARP from the host. |
| 683 | # the curious aspect of this setup is that ARP requests from the host |
| 684 | # will come from the VPP's own address. |
| 685 | # |
| 686 | self.pg0.generate_remote_hosts(2) |
| 687 | |
| 688 | arp_req_from_me = (Ether(src=self.pg2.remote_mac, |
| 689 | dst="ff:ff:ff:ff:ff:ff") / |
| 690 | ARP(op="who-has", |
| 691 | hwsrc=self.pg2.remote_mac, |
| 692 | pdst=self.pg0.remote_hosts[1].ip4, |
| 693 | psrc=self.pg0.local_ip4)) |
| 694 | |
| 695 | # |
| 696 | # Configure Proxy ARP for the subnet on PG0addresses on pg0 |
| 697 | # |
Neale Ranns | 3702930 | 2018-08-10 05:30:06 -0700 | [diff] [blame] | 698 | self.vapi.proxy_arp_add_del(self.pg0._local_ip4_subnet, |
| 699 | self.pg0._local_ip4_bcast) |
Neale Ranns | 24b170a | 2017-08-15 05:33:11 -0700 | [diff] [blame] | 700 | |
| 701 | # Make pg2 un-numbered to pg0 |
| 702 | # |
| 703 | self.pg2.set_unnumbered(self.pg0.sw_if_index) |
| 704 | |
| 705 | # |
| 706 | # Enable pg2 for proxy ARP |
| 707 | # |
| 708 | self.pg2.set_proxy_arp() |
| 709 | |
| 710 | # |
| 711 | # Send the ARP request with an originating address that |
| 712 | # is VPP's own address |
| 713 | # |
| 714 | self.pg2.add_stream(arp_req_from_me) |
| 715 | self.pg_enable_capture(self.pg_interfaces) |
| 716 | self.pg_start() |
| 717 | |
| 718 | rx = self.pg2.get_capture(1) |
| 719 | self.verify_arp_resp(rx[0], |
| 720 | self.pg2.local_mac, |
| 721 | self.pg2.remote_mac, |
| 722 | self.pg0.remote_hosts[1].ip4, |
| 723 | self.pg0.local_ip4) |
| 724 | |
| 725 | # |
| 726 | # validate we have not learned an ARP entry as a result of this |
| 727 | # |
| 728 | self.assertFalse(find_nbr(self, |
| 729 | self.pg2.sw_if_index, |
| 730 | self.pg0.local_ip4)) |
| 731 | |
| 732 | # |
| 733 | # cleanup |
| 734 | # |
| 735 | self.pg2.set_proxy_arp(0) |
Neale Ranns | 3702930 | 2018-08-10 05:30:06 -0700 | [diff] [blame] | 736 | self.vapi.proxy_arp_add_del(self.pg0._local_ip4_subnet, |
| 737 | self.pg0._local_ip4_bcast, |
Neale Ranns | 24b170a | 2017-08-15 05:33:11 -0700 | [diff] [blame] | 738 | is_add=0) |
| 739 | |
Neale Ranns | 39f9d8b | 2017-02-16 21:57:05 -0800 | [diff] [blame] | 740 | def test_proxy_arp(self): |
| 741 | """ Proxy ARP """ |
| 742 | |
Neale Ranns | d5b6aa1 | 2017-05-16 08:46:45 -0700 | [diff] [blame] | 743 | self.pg1.generate_remote_hosts(2) |
| 744 | |
Neale Ranns | 39f9d8b | 2017-02-16 21:57:05 -0800 | [diff] [blame] | 745 | # |
Paul Vinciguerra | 8feeaff | 2019-03-27 11:25:48 -0700 | [diff] [blame^] | 746 | # Proxy ARP request packets for each interface |
Neale Ranns | 39f9d8b | 2017-02-16 21:57:05 -0800 | [diff] [blame] | 747 | # |
Neale Ranns | 39f9d8b | 2017-02-16 21:57:05 -0800 | [diff] [blame] | 748 | arp_req_pg0 = (Ether(src=self.pg0.remote_mac, |
| 749 | dst="ff:ff:ff:ff:ff:ff") / |
| 750 | ARP(op="who-has", |
| 751 | hwsrc=self.pg0.remote_mac, |
| 752 | pdst="10.10.10.3", |
| 753 | psrc=self.pg0.remote_ip4)) |
Neale Ranns | 30d0fd4 | 2017-05-30 07:30:04 -0700 | [diff] [blame] | 754 | arp_req_pg0_tagged = (Ether(src=self.pg0.remote_mac, |
| 755 | dst="ff:ff:ff:ff:ff:ff") / |
| 756 | Dot1Q(vlan=0) / |
| 757 | ARP(op="who-has", |
| 758 | hwsrc=self.pg0.remote_mac, |
| 759 | pdst="10.10.10.3", |
| 760 | psrc=self.pg0.remote_ip4)) |
Neale Ranns | 39f9d8b | 2017-02-16 21:57:05 -0800 | [diff] [blame] | 761 | arp_req_pg1 = (Ether(src=self.pg1.remote_mac, |
| 762 | dst="ff:ff:ff:ff:ff:ff") / |
| 763 | ARP(op="who-has", |
| 764 | hwsrc=self.pg1.remote_mac, |
| 765 | pdst="10.10.10.3", |
| 766 | psrc=self.pg1.remote_ip4)) |
Neale Ranns | d5b6aa1 | 2017-05-16 08:46:45 -0700 | [diff] [blame] | 767 | arp_req_pg2 = (Ether(src=self.pg2.remote_mac, |
| 768 | dst="ff:ff:ff:ff:ff:ff") / |
| 769 | ARP(op="who-has", |
| 770 | hwsrc=self.pg2.remote_mac, |
| 771 | pdst="10.10.10.3", |
| 772 | psrc=self.pg1.remote_hosts[1].ip4)) |
Neale Ranns | 39f9d8b | 2017-02-16 21:57:05 -0800 | [diff] [blame] | 773 | arp_req_pg3 = (Ether(src=self.pg3.remote_mac, |
| 774 | dst="ff:ff:ff:ff:ff:ff") / |
| 775 | ARP(op="who-has", |
| 776 | hwsrc=self.pg3.remote_mac, |
| 777 | pdst="10.10.10.3", |
| 778 | psrc=self.pg3.remote_ip4)) |
| 779 | |
| 780 | # |
| 781 | # Configure Proxy ARP for 10.10.10.0 -> 10.10.10.124 |
| 782 | # |
| 783 | self.vapi.proxy_arp_add_del(inet_pton(AF_INET, "10.10.10.2"), |
| 784 | inet_pton(AF_INET, "10.10.10.124")) |
| 785 | |
| 786 | # |
| 787 | # No responses are sent when the interfaces are not enabled for proxy |
| 788 | # ARP |
| 789 | # |
| 790 | self.send_and_assert_no_replies(self.pg0, arp_req_pg0, |
| 791 | "ARP req from unconfigured interface") |
| 792 | self.send_and_assert_no_replies(self.pg2, arp_req_pg2, |
| 793 | "ARP req from unconfigured interface") |
| 794 | |
| 795 | # |
| 796 | # Make pg2 un-numbered to pg1 |
| 797 | # still won't reply. |
| 798 | # |
| 799 | self.pg2.set_unnumbered(self.pg1.sw_if_index) |
| 800 | |
| 801 | self.send_and_assert_no_replies(self.pg2, arp_req_pg2, |
| 802 | "ARP req from unnumbered interface") |
| 803 | |
| 804 | # |
| 805 | # Enable each interface to reply to proxy ARPs |
| 806 | # |
| 807 | for i in self.pg_interfaces: |
| 808 | i.set_proxy_arp() |
| 809 | |
| 810 | # |
| 811 | # Now each of the interfaces should reply to a request to a proxied |
| 812 | # address |
| 813 | # |
| 814 | self.pg0.add_stream(arp_req_pg0) |
| 815 | self.pg_enable_capture(self.pg_interfaces) |
| 816 | self.pg_start() |
| 817 | |
| 818 | rx = self.pg0.get_capture(1) |
| 819 | self.verify_arp_resp(rx[0], |
| 820 | self.pg0.local_mac, |
| 821 | self.pg0.remote_mac, |
| 822 | "10.10.10.3", |
| 823 | self.pg0.remote_ip4) |
| 824 | |
Neale Ranns | 30d0fd4 | 2017-05-30 07:30:04 -0700 | [diff] [blame] | 825 | self.pg0.add_stream(arp_req_pg0_tagged) |
| 826 | self.pg_enable_capture(self.pg_interfaces) |
| 827 | self.pg_start() |
| 828 | |
| 829 | rx = self.pg0.get_capture(1) |
| 830 | self.verify_arp_resp(rx[0], |
| 831 | self.pg0.local_mac, |
| 832 | self.pg0.remote_mac, |
| 833 | "10.10.10.3", |
| 834 | self.pg0.remote_ip4) |
| 835 | |
Neale Ranns | 39f9d8b | 2017-02-16 21:57:05 -0800 | [diff] [blame] | 836 | self.pg1.add_stream(arp_req_pg1) |
| 837 | self.pg_enable_capture(self.pg_interfaces) |
| 838 | self.pg_start() |
| 839 | |
| 840 | rx = self.pg1.get_capture(1) |
| 841 | self.verify_arp_resp(rx[0], |
| 842 | self.pg1.local_mac, |
| 843 | self.pg1.remote_mac, |
| 844 | "10.10.10.3", |
| 845 | self.pg1.remote_ip4) |
| 846 | |
| 847 | self.pg2.add_stream(arp_req_pg2) |
| 848 | self.pg_enable_capture(self.pg_interfaces) |
| 849 | self.pg_start() |
| 850 | |
| 851 | rx = self.pg2.get_capture(1) |
| 852 | self.verify_arp_resp(rx[0], |
| 853 | self.pg2.local_mac, |
| 854 | self.pg2.remote_mac, |
| 855 | "10.10.10.3", |
Neale Ranns | d5b6aa1 | 2017-05-16 08:46:45 -0700 | [diff] [blame] | 856 | self.pg1.remote_hosts[1].ip4) |
Neale Ranns | 39f9d8b | 2017-02-16 21:57:05 -0800 | [diff] [blame] | 857 | |
| 858 | # |
| 859 | # A request for an address out of the configured range |
| 860 | # |
| 861 | arp_req_pg1_hi = (Ether(src=self.pg1.remote_mac, |
| 862 | dst="ff:ff:ff:ff:ff:ff") / |
| 863 | ARP(op="who-has", |
| 864 | hwsrc=self.pg1.remote_mac, |
| 865 | pdst="10.10.10.125", |
| 866 | psrc=self.pg1.remote_ip4)) |
| 867 | self.send_and_assert_no_replies(self.pg1, arp_req_pg1_hi, |
| 868 | "ARP req out of range HI") |
| 869 | arp_req_pg1_low = (Ether(src=self.pg1.remote_mac, |
| 870 | dst="ff:ff:ff:ff:ff:ff") / |
| 871 | ARP(op="who-has", |
| 872 | hwsrc=self.pg1.remote_mac, |
| 873 | pdst="10.10.10.1", |
| 874 | psrc=self.pg1.remote_ip4)) |
| 875 | self.send_and_assert_no_replies(self.pg1, arp_req_pg1_low, |
| 876 | "ARP req out of range Low") |
| 877 | |
| 878 | # |
| 879 | # Request for an address in the proxy range but from an interface |
| 880 | # in a different VRF |
| 881 | # |
| 882 | self.send_and_assert_no_replies(self.pg3, arp_req_pg3, |
| 883 | "ARP req from different VRF") |
| 884 | |
| 885 | # |
| 886 | # Disable Each interface for proxy ARP |
| 887 | # - expect none to respond |
| 888 | # |
| 889 | for i in self.pg_interfaces: |
| 890 | i.set_proxy_arp(0) |
| 891 | |
| 892 | self.send_and_assert_no_replies(self.pg0, arp_req_pg0, |
| 893 | "ARP req from disable") |
| 894 | self.send_and_assert_no_replies(self.pg1, arp_req_pg1, |
| 895 | "ARP req from disable") |
| 896 | self.send_and_assert_no_replies(self.pg2, arp_req_pg2, |
| 897 | "ARP req from disable") |
Neale Ranns | 37be736 | 2017-02-21 17:30:26 -0800 | [diff] [blame] | 898 | |
| 899 | # |
| 900 | # clean up on interface 2 |
| 901 | # |
Neale Ranns | 4b919a5 | 2017-03-11 05:55:21 -0800 | [diff] [blame] | 902 | self.pg2.unset_unnumbered(self.pg1.sw_if_index) |
Neale Ranns | 37be736 | 2017-02-21 17:30:26 -0800 | [diff] [blame] | 903 | |
| 904 | def test_mpls(self): |
| 905 | """ MPLS """ |
| 906 | |
| 907 | # |
| 908 | # Interface 2 does not yet have ip4 config |
| 909 | # |
| 910 | self.pg2.config_ip4() |
| 911 | self.pg2.generate_remote_hosts(2) |
| 912 | |
| 913 | # |
Paul Vinciguerra | 8feeaff | 2019-03-27 11:25:48 -0700 | [diff] [blame^] | 914 | # Add a route with out going label via an ARP unresolved next-hop |
Neale Ranns | 37be736 | 2017-02-21 17:30:26 -0800 | [diff] [blame] | 915 | # |
| 916 | ip_10_0_0_1 = VppIpRoute(self, "10.0.0.1", 32, |
| 917 | [VppRoutePath(self.pg2.remote_hosts[1].ip4, |
| 918 | self.pg2.sw_if_index, |
| 919 | labels=[55])]) |
| 920 | ip_10_0_0_1.add_vpp_config() |
| 921 | |
| 922 | # |
| 923 | # packets should generate an ARP request |
| 924 | # |
| 925 | p = (Ether(src=self.pg0.remote_mac, |
| 926 | dst=self.pg0.local_mac) / |
| 927 | IP(src=self.pg0.remote_ip4, dst="10.0.0.1") / |
| 928 | UDP(sport=1234, dport=1234) / |
| 929 | Raw('\xa5' * 100)) |
| 930 | |
| 931 | self.pg0.add_stream(p) |
| 932 | self.pg_enable_capture(self.pg_interfaces) |
| 933 | self.pg_start() |
| 934 | |
| 935 | rx = self.pg2.get_capture(1) |
| 936 | self.verify_arp_req(rx[0], |
| 937 | self.pg2.local_mac, |
| 938 | self.pg2.local_ip4, |
| 939 | self.pg2._remote_hosts[1].ip4) |
| 940 | |
| 941 | # |
| 942 | # now resolve the neighbours |
| 943 | # |
| 944 | self.pg2.configure_ipv4_neighbors() |
| 945 | |
| 946 | # |
| 947 | # Now packet should be properly MPLS encapped. |
| 948 | # This verifies that MPLS link-type adjacencies are completed |
| 949 | # when the ARP entry resolves |
| 950 | # |
| 951 | self.pg0.add_stream(p) |
| 952 | self.pg_enable_capture(self.pg_interfaces) |
| 953 | self.pg_start() |
| 954 | |
| 955 | rx = self.pg2.get_capture(1) |
| 956 | self.verify_ip_o_mpls(rx[0], |
| 957 | self.pg2.local_mac, |
| 958 | self.pg2.remote_hosts[1].mac, |
| 959 | 55, |
| 960 | self.pg0.remote_ip4, |
| 961 | "10.0.0.1") |
Neale Ranns | 4b919a5 | 2017-03-11 05:55:21 -0800 | [diff] [blame] | 962 | self.pg2.unconfig_ip4() |
Neale Ranns | 37be736 | 2017-02-21 17:30:26 -0800 | [diff] [blame] | 963 | |
Matthew Smith | cb9ab47 | 2017-05-16 21:35:56 -0500 | [diff] [blame] | 964 | def test_arp_vrrp(self): |
| 965 | """ ARP reply with VRRP virtual src hw addr """ |
| 966 | |
| 967 | # |
| 968 | # IP packet destined for pg1 remote host arrives on pg0 resulting |
| 969 | # in an ARP request for the address of the remote host on pg1 |
| 970 | # |
| 971 | p0 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / |
| 972 | IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4) / |
| 973 | UDP(sport=1234, dport=1234) / |
| 974 | Raw()) |
| 975 | |
Neale Ranns | 3702930 | 2018-08-10 05:30:06 -0700 | [diff] [blame] | 976 | rx1 = self.send_and_expect(self.pg0, [p0], self.pg1) |
Matthew Smith | cb9ab47 | 2017-05-16 21:35:56 -0500 | [diff] [blame] | 977 | |
| 978 | self.verify_arp_req(rx1[0], |
| 979 | self.pg1.local_mac, |
| 980 | self.pg1.local_ip4, |
| 981 | self.pg1.remote_ip4) |
| 982 | |
| 983 | # |
| 984 | # ARP reply for address of pg1 remote host arrives on pg1 with |
| 985 | # the hw src addr set to a value in the VRRP IPv4 range of |
| 986 | # MAC addresses |
| 987 | # |
| 988 | p1 = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) / |
| 989 | ARP(op="is-at", hwdst=self.pg1.local_mac, |
| 990 | hwsrc="00:00:5e:00:01:09", pdst=self.pg1.local_ip4, |
| 991 | psrc=self.pg1.remote_ip4)) |
| 992 | |
Neale Ranns | 3702930 | 2018-08-10 05:30:06 -0700 | [diff] [blame] | 993 | self.send_and_assert_no_replies(self.pg1, p1, "ARP reply") |
Matthew Smith | cb9ab47 | 2017-05-16 21:35:56 -0500 | [diff] [blame] | 994 | |
| 995 | # |
| 996 | # IP packet destined for pg1 remote host arrives on pg0 again. |
| 997 | # VPP should have an ARP entry for that address now and the packet |
| 998 | # should be sent out pg1. |
| 999 | # |
Neale Ranns | 3702930 | 2018-08-10 05:30:06 -0700 | [diff] [blame] | 1000 | rx1 = self.send_and_expect(self.pg0, [p0], self.pg1) |
Matthew Smith | cb9ab47 | 2017-05-16 21:35:56 -0500 | [diff] [blame] | 1001 | |
| 1002 | self.verify_ip(rx1[0], |
| 1003 | self.pg1.local_mac, |
| 1004 | "00:00:5e:00:01:09", |
| 1005 | self.pg0.remote_ip4, |
| 1006 | self.pg1.remote_ip4) |
| 1007 | |
| 1008 | self.pg1.admin_down() |
| 1009 | self.pg1.admin_up() |
| 1010 | |
Neale Ranns | dcd6d62 | 2017-05-26 02:59:16 -0700 | [diff] [blame] | 1011 | def test_arp_duplicates(self): |
| 1012 | """ ARP Duplicates""" |
| 1013 | |
| 1014 | # |
| 1015 | # Generate some hosts on the LAN |
| 1016 | # |
| 1017 | self.pg1.generate_remote_hosts(3) |
| 1018 | |
| 1019 | # |
| 1020 | # Add host 1 on pg1 and pg2 |
| 1021 | # |
| 1022 | arp_pg1 = VppNeighbor(self, |
| 1023 | self.pg1.sw_if_index, |
| 1024 | self.pg1.remote_hosts[1].mac, |
| 1025 | self.pg1.remote_hosts[1].ip4) |
| 1026 | arp_pg1.add_vpp_config() |
| 1027 | arp_pg2 = VppNeighbor(self, |
| 1028 | self.pg2.sw_if_index, |
| 1029 | self.pg2.remote_mac, |
| 1030 | self.pg1.remote_hosts[1].ip4) |
| 1031 | arp_pg2.add_vpp_config() |
| 1032 | |
| 1033 | # |
| 1034 | # IP packet destined for pg1 remote host arrives on pg1 again. |
| 1035 | # |
| 1036 | p = (Ether(dst=self.pg0.local_mac, |
| 1037 | src=self.pg0.remote_mac) / |
| 1038 | IP(src=self.pg0.remote_ip4, |
| 1039 | dst=self.pg1.remote_hosts[1].ip4) / |
| 1040 | UDP(sport=1234, dport=1234) / |
| 1041 | Raw()) |
| 1042 | |
| 1043 | self.pg0.add_stream(p) |
| 1044 | self.pg_enable_capture(self.pg_interfaces) |
| 1045 | self.pg_start() |
| 1046 | |
| 1047 | rx1 = self.pg1.get_capture(1) |
| 1048 | |
| 1049 | self.verify_ip(rx1[0], |
| 1050 | self.pg1.local_mac, |
| 1051 | self.pg1.remote_hosts[1].mac, |
| 1052 | self.pg0.remote_ip4, |
| 1053 | self.pg1.remote_hosts[1].ip4) |
| 1054 | |
| 1055 | # |
| 1056 | # remove the duplicate on pg1 |
Paul Vinciguerra | 8feeaff | 2019-03-27 11:25:48 -0700 | [diff] [blame^] | 1057 | # packet stream should generate ARPs out of pg1 |
Neale Ranns | dcd6d62 | 2017-05-26 02:59:16 -0700 | [diff] [blame] | 1058 | # |
| 1059 | arp_pg1.remove_vpp_config() |
| 1060 | |
| 1061 | self.pg0.add_stream(p) |
| 1062 | self.pg_enable_capture(self.pg_interfaces) |
| 1063 | self.pg_start() |
| 1064 | |
| 1065 | rx1 = self.pg1.get_capture(1) |
| 1066 | |
| 1067 | self.verify_arp_req(rx1[0], |
| 1068 | self.pg1.local_mac, |
| 1069 | self.pg1.local_ip4, |
| 1070 | self.pg1.remote_hosts[1].ip4) |
| 1071 | |
| 1072 | # |
| 1073 | # Add it back |
| 1074 | # |
| 1075 | arp_pg1.add_vpp_config() |
| 1076 | |
| 1077 | self.pg0.add_stream(p) |
| 1078 | self.pg_enable_capture(self.pg_interfaces) |
| 1079 | self.pg_start() |
| 1080 | |
| 1081 | rx1 = self.pg1.get_capture(1) |
| 1082 | |
| 1083 | self.verify_ip(rx1[0], |
| 1084 | self.pg1.local_mac, |
| 1085 | self.pg1.remote_hosts[1].mac, |
| 1086 | self.pg0.remote_ip4, |
| 1087 | self.pg1.remote_hosts[1].ip4) |
| 1088 | |
Neale Ranns | 1500254 | 2017-09-10 04:39:11 -0700 | [diff] [blame] | 1089 | def test_arp_static(self): |
| 1090 | """ ARP Static""" |
| 1091 | self.pg2.generate_remote_hosts(3) |
| 1092 | |
| 1093 | # |
| 1094 | # Add a static ARP entry |
| 1095 | # |
| 1096 | static_arp = VppNeighbor(self, |
| 1097 | self.pg2.sw_if_index, |
| 1098 | self.pg2.remote_hosts[1].mac, |
| 1099 | self.pg2.remote_hosts[1].ip4, |
| 1100 | is_static=1) |
| 1101 | static_arp.add_vpp_config() |
| 1102 | |
| 1103 | # |
| 1104 | # Add the connected prefix to the interface |
| 1105 | # |
| 1106 | self.pg2.config_ip4() |
| 1107 | |
| 1108 | # |
| 1109 | # We should now find the adj-fib |
| 1110 | # |
| 1111 | self.assertTrue(find_nbr(self, |
| 1112 | self.pg2.sw_if_index, |
| 1113 | self.pg2.remote_hosts[1].ip4, |
| 1114 | is_static=1)) |
| 1115 | self.assertTrue(find_route(self, |
| 1116 | self.pg2.remote_hosts[1].ip4, |
| 1117 | 32)) |
| 1118 | |
| 1119 | # |
| 1120 | # remove the connected |
| 1121 | # |
| 1122 | self.pg2.unconfig_ip4() |
| 1123 | |
| 1124 | # |
| 1125 | # put the interface into table 1 |
| 1126 | # |
| 1127 | self.pg2.set_table_ip4(1) |
| 1128 | |
| 1129 | # |
| 1130 | # configure the same connected and expect to find the |
| 1131 | # adj fib in the new table |
| 1132 | # |
| 1133 | self.pg2.config_ip4() |
| 1134 | self.assertTrue(find_route(self, |
| 1135 | self.pg2.remote_hosts[1].ip4, |
| 1136 | 32, |
| 1137 | table_id=1)) |
| 1138 | |
| 1139 | # |
| 1140 | # clean-up |
| 1141 | # |
| 1142 | self.pg2.unconfig_ip4() |
| 1143 | self.pg2.set_table_ip4(0) |
| 1144 | |
Neale Ranns | c819fc6 | 2018-02-16 02:44:05 -0800 | [diff] [blame] | 1145 | def test_arp_incomplete(self): |
| 1146 | """ ARP Incomplete""" |
| 1147 | self.pg1.generate_remote_hosts(3) |
| 1148 | |
| 1149 | p0 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / |
| 1150 | IP(src=self.pg0.remote_ip4, |
| 1151 | dst=self.pg1.remote_hosts[1].ip4) / |
| 1152 | UDP(sport=1234, dport=1234) / |
| 1153 | Raw()) |
| 1154 | p1 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / |
| 1155 | IP(src=self.pg0.remote_ip4, |
| 1156 | dst=self.pg1.remote_hosts[2].ip4) / |
| 1157 | UDP(sport=1234, dport=1234) / |
| 1158 | Raw()) |
| 1159 | |
| 1160 | # |
| 1161 | # a packet to an unresolved destination generates an ARP request |
| 1162 | # |
| 1163 | rx = self.send_and_expect(self.pg0, [p0], self.pg1) |
| 1164 | self.verify_arp_req(rx[0], |
| 1165 | self.pg1.local_mac, |
| 1166 | self.pg1.local_ip4, |
| 1167 | self.pg1._remote_hosts[1].ip4) |
| 1168 | |
| 1169 | # |
| 1170 | # add a neighbour for remote host 1 |
| 1171 | # |
| 1172 | static_arp = VppNeighbor(self, |
| 1173 | self.pg1.sw_if_index, |
| 1174 | self.pg1.remote_hosts[1].mac, |
| 1175 | self.pg1.remote_hosts[1].ip4, |
| 1176 | is_static=1) |
| 1177 | static_arp.add_vpp_config() |
| 1178 | |
| 1179 | # |
| 1180 | # change the interface's MAC |
| 1181 | # |
Paul Vinciguerra | a7427ec | 2019-03-10 10:04:23 -0700 | [diff] [blame] | 1182 | mac = [scapy.compat.chb(0x00), scapy.compat.chb(0x00), |
| 1183 | scapy.compat.chb(0x00), scapy.compat.chb(0x33), |
| 1184 | scapy.compat.chb(0x33), scapy.compat.chb(0x33)] |
Neale Ranns | c819fc6 | 2018-02-16 02:44:05 -0800 | [diff] [blame] | 1185 | mac_string = ''.join(mac) |
| 1186 | |
| 1187 | self.vapi.sw_interface_set_mac_address(self.pg1.sw_if_index, |
| 1188 | mac_string) |
| 1189 | |
| 1190 | # |
| 1191 | # now ARP requests come from the new source mac |
| 1192 | # |
| 1193 | rx = self.send_and_expect(self.pg0, [p1], self.pg1) |
| 1194 | self.verify_arp_req(rx[0], |
| 1195 | "00:00:00:33:33:33", |
| 1196 | self.pg1.local_ip4, |
| 1197 | self.pg1._remote_hosts[2].ip4) |
| 1198 | |
| 1199 | # |
| 1200 | # packets to the resolved host also have the new source mac |
| 1201 | # |
| 1202 | rx = self.send_and_expect(self.pg0, [p0], self.pg1) |
| 1203 | self.verify_ip(rx[0], |
| 1204 | "00:00:00:33:33:33", |
| 1205 | self.pg1.remote_hosts[1].mac, |
| 1206 | self.pg0.remote_ip4, |
| 1207 | self.pg1.remote_hosts[1].ip4) |
| 1208 | |
| 1209 | # |
Paul Vinciguerra | 8feeaff | 2019-03-27 11:25:48 -0700 | [diff] [blame^] | 1210 | # set the mac address on the interface that does not have a |
Neale Ranns | c819fc6 | 2018-02-16 02:44:05 -0800 | [diff] [blame] | 1211 | # configured subnet and thus no glean |
| 1212 | # |
| 1213 | self.vapi.sw_interface_set_mac_address(self.pg2.sw_if_index, |
| 1214 | mac_string) |
| 1215 | |
Neale Ranns | 59ae61e | 2018-06-07 18:09:49 -0700 | [diff] [blame] | 1216 | def test_garp(self): |
| 1217 | """ GARP """ |
| 1218 | |
| 1219 | # |
| 1220 | # Generate some hosts on the LAN |
| 1221 | # |
| 1222 | self.pg1.generate_remote_hosts(4) |
| 1223 | |
| 1224 | # |
| 1225 | # And an ARP entry |
| 1226 | # |
| 1227 | arp = VppNeighbor(self, |
| 1228 | self.pg1.sw_if_index, |
| 1229 | self.pg1.remote_hosts[1].mac, |
| 1230 | self.pg1.remote_hosts[1].ip4) |
| 1231 | arp.add_vpp_config() |
| 1232 | |
| 1233 | self.assertTrue(find_nbr(self, |
| 1234 | self.pg1.sw_if_index, |
| 1235 | self.pg1.remote_hosts[1].ip4, |
| 1236 | mac=self.pg1.remote_hosts[1].mac)) |
| 1237 | |
| 1238 | # |
| 1239 | # Send a GARP (request) to swap the host 1's address to that of host 2 |
| 1240 | # |
| 1241 | p1 = (Ether(dst="ff:ff:ff:ff:ff:ff", |
| 1242 | src=self.pg1.remote_hosts[2].mac) / |
| 1243 | ARP(op="who-has", |
| 1244 | hwdst=self.pg1.local_mac, |
| 1245 | hwsrc=self.pg1.remote_hosts[2].mac, |
| 1246 | pdst=self.pg1.remote_hosts[1].ip4, |
| 1247 | psrc=self.pg1.remote_hosts[1].ip4)) |
| 1248 | |
| 1249 | self.pg1.add_stream(p1) |
| 1250 | self.pg_enable_capture(self.pg_interfaces) |
| 1251 | self.pg_start() |
| 1252 | |
| 1253 | self.assertTrue(find_nbr(self, |
| 1254 | self.pg1.sw_if_index, |
| 1255 | self.pg1.remote_hosts[1].ip4, |
| 1256 | mac=self.pg1.remote_hosts[2].mac)) |
| 1257 | |
| 1258 | # |
| 1259 | # Send a GARP (reply) to swap the host 1's address to that of host 3 |
| 1260 | # |
| 1261 | p1 = (Ether(dst="ff:ff:ff:ff:ff:ff", |
| 1262 | src=self.pg1.remote_hosts[3].mac) / |
| 1263 | ARP(op="is-at", |
| 1264 | hwdst=self.pg1.local_mac, |
| 1265 | hwsrc=self.pg1.remote_hosts[3].mac, |
| 1266 | pdst=self.pg1.remote_hosts[1].ip4, |
| 1267 | psrc=self.pg1.remote_hosts[1].ip4)) |
| 1268 | |
| 1269 | self.pg1.add_stream(p1) |
| 1270 | self.pg_enable_capture(self.pg_interfaces) |
| 1271 | self.pg_start() |
| 1272 | |
| 1273 | self.assertTrue(find_nbr(self, |
| 1274 | self.pg1.sw_if_index, |
| 1275 | self.pg1.remote_hosts[1].ip4, |
| 1276 | mac=self.pg1.remote_hosts[3].mac)) |
| 1277 | |
| 1278 | # |
Paul Vinciguerra | 8feeaff | 2019-03-27 11:25:48 -0700 | [diff] [blame^] | 1279 | # GARPs (request nor replies) for host we don't know yet |
Neale Ranns | 59ae61e | 2018-06-07 18:09:49 -0700 | [diff] [blame] | 1280 | # don't result in new neighbour entries |
| 1281 | # |
| 1282 | p1 = (Ether(dst="ff:ff:ff:ff:ff:ff", |
| 1283 | src=self.pg1.remote_hosts[3].mac) / |
| 1284 | ARP(op="who-has", |
| 1285 | hwdst=self.pg1.local_mac, |
| 1286 | hwsrc=self.pg1.remote_hosts[3].mac, |
| 1287 | pdst=self.pg1.remote_hosts[2].ip4, |
| 1288 | psrc=self.pg1.remote_hosts[2].ip4)) |
| 1289 | |
| 1290 | self.pg1.add_stream(p1) |
| 1291 | self.pg_enable_capture(self.pg_interfaces) |
| 1292 | self.pg_start() |
| 1293 | |
| 1294 | self.assertFalse(find_nbr(self, |
| 1295 | self.pg1.sw_if_index, |
| 1296 | self.pg1.remote_hosts[2].ip4)) |
| 1297 | |
| 1298 | p1 = (Ether(dst="ff:ff:ff:ff:ff:ff", |
| 1299 | src=self.pg1.remote_hosts[3].mac) / |
| 1300 | ARP(op="is-at", |
| 1301 | hwdst=self.pg1.local_mac, |
| 1302 | hwsrc=self.pg1.remote_hosts[3].mac, |
| 1303 | pdst=self.pg1.remote_hosts[2].ip4, |
| 1304 | psrc=self.pg1.remote_hosts[2].ip4)) |
| 1305 | |
| 1306 | self.pg1.add_stream(p1) |
| 1307 | self.pg_enable_capture(self.pg_interfaces) |
| 1308 | self.pg_start() |
| 1309 | |
| 1310 | self.assertFalse(find_nbr(self, |
| 1311 | self.pg1.sw_if_index, |
| 1312 | self.pg1.remote_hosts[2].ip4)) |
| 1313 | |
Neale Ranns | c8352bc | 2018-08-29 10:23:58 -0700 | [diff] [blame] | 1314 | def test_arp_incomplete(self): |
Neale Ranns | 1426039 | 2018-09-28 05:00:57 -0700 | [diff] [blame] | 1315 | """ Incomplete Entries """ |
Neale Ranns | c8352bc | 2018-08-29 10:23:58 -0700 | [diff] [blame] | 1316 | |
| 1317 | # |
Neale Ranns | cd35e53 | 2018-08-31 02:51:45 -0700 | [diff] [blame] | 1318 | # ensure that we throttle the ARP and ND requests |
Neale Ranns | c8352bc | 2018-08-29 10:23:58 -0700 | [diff] [blame] | 1319 | # |
| 1320 | self.pg0.generate_remote_hosts(2) |
| 1321 | |
Neale Ranns | cd35e53 | 2018-08-31 02:51:45 -0700 | [diff] [blame] | 1322 | # |
| 1323 | # IPv4/ARP |
| 1324 | # |
Neale Ranns | c8352bc | 2018-08-29 10:23:58 -0700 | [diff] [blame] | 1325 | ip_10_0_0_1 = VppIpRoute(self, "10.0.0.1", 32, |
| 1326 | [VppRoutePath(self.pg0.remote_hosts[1].ip4, |
Neale Ranns | cd35e53 | 2018-08-31 02:51:45 -0700 | [diff] [blame] | 1327 | self.pg0.sw_if_index)]) |
Neale Ranns | c8352bc | 2018-08-29 10:23:58 -0700 | [diff] [blame] | 1328 | ip_10_0_0_1.add_vpp_config() |
| 1329 | |
| 1330 | p1 = (Ether(dst=self.pg1.local_mac, |
| 1331 | src=self.pg1.remote_mac) / |
| 1332 | IP(src=self.pg1.remote_ip4, |
| 1333 | dst="10.0.0.1") / |
| 1334 | UDP(sport=1234, dport=1234) / |
| 1335 | Raw()) |
| 1336 | |
| 1337 | self.pg1.add_stream(p1 * 257) |
| 1338 | self.pg_enable_capture(self.pg_interfaces) |
| 1339 | self.pg_start() |
| 1340 | rx = self.pg0._get_capture(1) |
| 1341 | |
| 1342 | # |
| 1343 | # how many we get is going to be dependent on the time for packet |
| 1344 | # processing but it should be small |
| 1345 | # |
Paul Vinciguerra | 3d2df21 | 2018-11-24 23:19:53 -0800 | [diff] [blame] | 1346 | self.assertLess(len(rx), 64) |
Neale Ranns | c8352bc | 2018-08-29 10:23:58 -0700 | [diff] [blame] | 1347 | |
Neale Ranns | cd35e53 | 2018-08-31 02:51:45 -0700 | [diff] [blame] | 1348 | # |
| 1349 | # IPv6/ND |
| 1350 | # |
| 1351 | ip_10_1 = VppIpRoute(self, "10::1", 128, |
| 1352 | [VppRoutePath(self.pg0.remote_hosts[1].ip6, |
| 1353 | self.pg0.sw_if_index, |
| 1354 | proto=DpoProto.DPO_PROTO_IP6)], |
| 1355 | is_ip6=1) |
| 1356 | ip_10_1.add_vpp_config() |
| 1357 | |
| 1358 | p1 = (Ether(dst=self.pg1.local_mac, |
| 1359 | src=self.pg1.remote_mac) / |
| 1360 | IPv6(src=self.pg1.remote_ip6, |
| 1361 | dst="10::1") / |
| 1362 | UDP(sport=1234, dport=1234) / |
| 1363 | Raw()) |
| 1364 | |
| 1365 | self.pg1.add_stream(p1 * 257) |
| 1366 | self.pg_enable_capture(self.pg_interfaces) |
| 1367 | self.pg_start() |
| 1368 | rx = self.pg0._get_capture(1) |
| 1369 | |
| 1370 | # |
| 1371 | # how many we get is going to be dependent on the time for packet |
| 1372 | # processing but it should be small |
| 1373 | # |
Paul Vinciguerra | 3d2df21 | 2018-11-24 23:19:53 -0800 | [diff] [blame] | 1374 | self.assertLess(len(rx), 64) |
Neale Ranns | cd35e53 | 2018-08-31 02:51:45 -0700 | [diff] [blame] | 1375 | |
Neale Ranns | 7425f92 | 2019-01-23 00:36:16 -0800 | [diff] [blame] | 1376 | def test_arp_forus(self): |
| 1377 | """ ARP for for-us """ |
| 1378 | |
| 1379 | # |
| 1380 | # Test that VPP responds with ARP requests to addresses that |
| 1381 | # are connected and local routes. |
| 1382 | # Use one of the 'remote' addresses in the subnet as a local address |
Paul Vinciguerra | 8feeaff | 2019-03-27 11:25:48 -0700 | [diff] [blame^] | 1383 | # The intention of this route is that it then acts like a secondary |
Neale Ranns | 7425f92 | 2019-01-23 00:36:16 -0800 | [diff] [blame] | 1384 | # address added to an interface |
| 1385 | # |
| 1386 | self.pg0.generate_remote_hosts(2) |
| 1387 | |
| 1388 | forus = VppIpRoute(self, self.pg0.remote_hosts[1].ip4, 32, |
| 1389 | [VppRoutePath(self.pg0.remote_hosts[1].ip4, |
| 1390 | self.pg0.sw_if_index)], |
| 1391 | is_local=1) |
| 1392 | forus.add_vpp_config() |
| 1393 | |
| 1394 | p = (Ether(dst="ff:ff:ff:ff:ff:ff", |
| 1395 | src=self.pg0.remote_mac) / |
| 1396 | ARP(op="who-has", |
| 1397 | hwdst=self.pg0.local_mac, |
| 1398 | hwsrc=self.pg0.remote_mac, |
| 1399 | pdst=self.pg0.remote_hosts[1].ip4, |
| 1400 | psrc=self.pg0.remote_ip4)) |
| 1401 | |
| 1402 | rx = self.send_and_expect(self.pg0, [p], self.pg0) |
| 1403 | |
| 1404 | self.verify_arp_resp(rx[0], |
| 1405 | self.pg0.local_mac, |
| 1406 | self.pg0.remote_mac, |
| 1407 | self.pg0.remote_hosts[1].ip4, |
| 1408 | self.pg0.remote_ip4) |
| 1409 | |
Neale Ranns | dcd6d62 | 2017-05-26 02:59:16 -0700 | [diff] [blame] | 1410 | |
Neale Ranns | 1426039 | 2018-09-28 05:00:57 -0700 | [diff] [blame] | 1411 | class NeighborStatsTestCase(VppTestCase): |
Neale Ranns | 3702930 | 2018-08-10 05:30:06 -0700 | [diff] [blame] | 1412 | """ ARP/ND Counters """ |
Neale Ranns | 1426039 | 2018-09-28 05:00:57 -0700 | [diff] [blame] | 1413 | |
| 1414 | def setUp(self): |
| 1415 | super(NeighborStatsTestCase, self).setUp() |
| 1416 | |
| 1417 | self.create_pg_interfaces(range(2)) |
| 1418 | |
| 1419 | # pg0 configured with ip4 and 6 addresses used for input |
| 1420 | # pg1 configured with ip4 and 6 addresses used for output |
| 1421 | # pg2 is unnumbered to pg0 |
| 1422 | for i in self.pg_interfaces: |
| 1423 | i.admin_up() |
| 1424 | i.config_ip4() |
| 1425 | i.config_ip6() |
| 1426 | i.resolve_arp() |
| 1427 | i.resolve_ndp() |
| 1428 | |
| 1429 | def tearDown(self): |
| 1430 | super(NeighborStatsTestCase, self).tearDown() |
| 1431 | |
| 1432 | for i in self.pg_interfaces: |
| 1433 | i.unconfig_ip4() |
| 1434 | i.unconfig_ip6() |
| 1435 | i.admin_down() |
| 1436 | |
| 1437 | def test_arp_stats(self): |
| 1438 | """ ARP Counters """ |
| 1439 | |
| 1440 | self.vapi.cli("adj counters enable") |
| 1441 | self.pg1.generate_remote_hosts(2) |
| 1442 | |
| 1443 | arp1 = VppNeighbor(self, |
| 1444 | self.pg1.sw_if_index, |
| 1445 | self.pg1.remote_hosts[0].mac, |
| 1446 | self.pg1.remote_hosts[0].ip4) |
| 1447 | arp1.add_vpp_config() |
| 1448 | arp2 = VppNeighbor(self, |
| 1449 | self.pg1.sw_if_index, |
| 1450 | self.pg1.remote_hosts[1].mac, |
| 1451 | self.pg1.remote_hosts[1].ip4) |
| 1452 | arp2.add_vpp_config() |
| 1453 | |
| 1454 | p1 = (Ether(dst=self.pg0.local_mac, |
| 1455 | src=self.pg0.remote_mac) / |
| 1456 | IP(src=self.pg0.remote_ip4, |
| 1457 | dst=self.pg1.remote_hosts[0].ip4) / |
| 1458 | UDP(sport=1234, dport=1234) / |
| 1459 | Raw()) |
| 1460 | p2 = (Ether(dst=self.pg0.local_mac, |
| 1461 | src=self.pg0.remote_mac) / |
| 1462 | IP(src=self.pg0.remote_ip4, |
| 1463 | dst=self.pg1.remote_hosts[1].ip4) / |
| 1464 | UDP(sport=1234, dport=1234) / |
| 1465 | Raw()) |
| 1466 | |
| 1467 | rx = self.send_and_expect(self.pg0, p1 * 65, self.pg1) |
| 1468 | rx = self.send_and_expect(self.pg0, p2 * 65, self.pg1) |
| 1469 | |
| 1470 | self.assertEqual(65, arp1.get_stats()['packets']) |
| 1471 | self.assertEqual(65, arp2.get_stats()['packets']) |
| 1472 | |
| 1473 | rx = self.send_and_expect(self.pg0, p1 * 65, self.pg1) |
| 1474 | self.assertEqual(130, arp1.get_stats()['packets']) |
| 1475 | |
| 1476 | def test_nd_stats(self): |
| 1477 | """ ND Counters """ |
| 1478 | |
| 1479 | self.vapi.cli("adj counters enable") |
| 1480 | self.pg0.generate_remote_hosts(3) |
| 1481 | |
| 1482 | nd1 = VppNeighbor(self, |
| 1483 | self.pg0.sw_if_index, |
| 1484 | self.pg0.remote_hosts[1].mac, |
Neale Ranns | 3702930 | 2018-08-10 05:30:06 -0700 | [diff] [blame] | 1485 | self.pg0.remote_hosts[1].ip6) |
Neale Ranns | 1426039 | 2018-09-28 05:00:57 -0700 | [diff] [blame] | 1486 | nd1.add_vpp_config() |
| 1487 | nd2 = VppNeighbor(self, |
| 1488 | self.pg0.sw_if_index, |
| 1489 | self.pg0.remote_hosts[2].mac, |
Neale Ranns | 3702930 | 2018-08-10 05:30:06 -0700 | [diff] [blame] | 1490 | self.pg0.remote_hosts[2].ip6) |
Neale Ranns | 1426039 | 2018-09-28 05:00:57 -0700 | [diff] [blame] | 1491 | nd2.add_vpp_config() |
| 1492 | |
| 1493 | p1 = (Ether(dst=self.pg1.local_mac, |
| 1494 | src=self.pg1.remote_mac) / |
| 1495 | IPv6(src=self.pg1.remote_ip6, |
| 1496 | dst=self.pg0.remote_hosts[1].ip6) / |
| 1497 | UDP(sport=1234, dport=1234) / |
| 1498 | Raw()) |
| 1499 | p2 = (Ether(dst=self.pg1.local_mac, |
| 1500 | src=self.pg1.remote_mac) / |
| 1501 | IPv6(src=self.pg1.remote_ip6, |
| 1502 | dst=self.pg0.remote_hosts[2].ip6) / |
| 1503 | UDP(sport=1234, dport=1234) / |
| 1504 | Raw()) |
| 1505 | |
| 1506 | rx = self.send_and_expect(self.pg1, p1 * 16, self.pg0) |
| 1507 | rx = self.send_and_expect(self.pg1, p2 * 16, self.pg0) |
| 1508 | |
| 1509 | self.assertEqual(16, nd1.get_stats()['packets']) |
| 1510 | self.assertEqual(16, nd2.get_stats()['packets']) |
| 1511 | |
| 1512 | rx = self.send_and_expect(self.pg1, p1 * 65, self.pg0) |
| 1513 | self.assertEqual(81, nd1.get_stats()['packets']) |
| 1514 | |
| 1515 | |
Neale Ranns | 37be736 | 2017-02-21 17:30:26 -0800 | [diff] [blame] | 1516 | if __name__ == '__main__': |
| 1517 | unittest.main(testRunner=VppTestRunner) |