src/plugins/svs/test/test_svs.py

   1 #!/usr/bin/env python3
   2
   3 import unittest
   4
   5 from framework import VppTestCase, VppTestRunner
   6 from vpp_ip_route import VppIpTable
   7
   8 from scapy.packet import Raw
   9 from scapy.layers.l2 import Ether
  10 from scapy.layers.inet import IP, UDP, ICMP
  11 from scapy.layers.inet6 import IPv6
  12
  13 from vpp_papi import VppEnum
  14
  15 NUM_PKTS = 67
  16
  17
  18 class TestSVS(VppTestCase):
  19     """ SVS Test Case """
  20
  21     @classmethod
  22     def setUpClass(cls):
  23         super(TestSVS, cls).setUpClass()
  24
  25     @classmethod
  26     def tearDownClass(cls):
  27         super(TestSVS, cls).tearDownClass()
  28
  29     def setUp(self):
  30         super(TestSVS, self).setUp()
  31
  32         # create 2 pg interfaces
  33         self.create_pg_interfaces(range(4))
  34
  35         table_id = 0
  36
  37         for i in self.pg_interfaces:
  38             i.admin_up()
  39
  40             if table_id != 0:
  41                 tbl = VppIpTable(self, table_id)
  42                 tbl.add_vpp_config()
  43                 tbl = VppIpTable(self, table_id, is_ip6=1)
  44                 tbl.add_vpp_config()
  45
  46             i.set_table_ip4(table_id)
  47             i.set_table_ip6(table_id)
  48             i.config_ip4()
  49             i.resolve_arp()
  50             i.config_ip6()
  51             i.resolve_ndp()
  52             table_id += 1
  53
  54     def tearDown(self):
  55         for i in self.pg_interfaces:
  56             i.unconfig_ip4()
  57             i.unconfig_ip6()
  58             i.set_table_ip4(0)
  59             i.set_table_ip6(0)
  60             i.admin_down()
  61         super(TestSVS, self).tearDown()
  62
  63     def test_svs4(self):
  64         """ Source VRF Select IP4 """
  65
  66         #
  67         # packets destined out of the 3 non-default table interfaces
  68         #
  69         pkts_0 = [(Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
  70                    IP(src="1.1.1.1", dst=self.pg1.remote_ip4) /
  71                    UDP(sport=1234, dport=1234) /
  72                    Raw(b'\xa5' * 100)),
  73                   (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
  74                    IP(src="2.2.2.2", dst=self.pg2.remote_ip4) /
  75                    UDP(sport=1234, dport=1234) /
  76                    Raw(b'\xa5' * 100)),
  77                   (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
  78                    IP(src="3.3.3.3", dst=self.pg3.remote_ip4) /
  79                    UDP(sport=1234, dport=1234) /
  80                    Raw(b'\xa5' * 100))]
  81         pkts_1 = [(Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
  82                    IP(src="1.1.1.1", dst=self.pg1.remote_ip4) /
  83                    UDP(sport=1234, dport=1234) /
  84                    Raw(b'\xa5' * 100)),
  85                   (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
  86                    IP(src="2.2.2.2", dst=self.pg2.remote_ip4) /
  87                    UDP(sport=1234, dport=1234) /
  88                    Raw(b'\xa5' * 100)),
  89                   (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
  90                    IP(src="3.3.3.3", dst=self.pg3.remote_ip4) /
  91                    UDP(sport=1234, dport=1234) /
  92                    Raw(b'\xa5' * 100))]
  93
  94         #
  95         # before adding the SVS config all these packets are dropped when
  96         # ingressing on pg0 since pg0 is in the default table
  97         #
  98         for p in pkts_0:
  99             self.send_and_assert_no_replies(self.pg0, p * 1)
 100
 101         #
 102         # Add table 1001 & 1002 into which we'll add the routes
 103         # determining the source VRF selection
 104         #
 105         table_ids = [101, 102]
 106
 107         for table_id in table_ids:
 108             self.vapi.svs_table_add_del(
 109                 VppEnum.vl_api_address_family_t.ADDRESS_IP4, table_id)
 110
 111             #
 112             # map X.0.0.0/8 to each SVS table for lookup in table X
 113             #
 114             for i in range(1, 4):
 115                 self.vapi.svs_route_add_del(
 116                     table_id, "%d.0.0.0/8" % i, i)
 117
 118         #
 119         # Enable SVS on pg0/pg1 using table 1001/1002
 120         #
 121         self.vapi.svs_enable_disable(
 122             VppEnum.vl_api_address_family_t.ADDRESS_IP4, table_ids[0],
 123             self.pg0.sw_if_index)
 124         self.vapi.svs_enable_disable(
 125             VppEnum.vl_api_address_family_t.ADDRESS_IP4, table_ids[1],
 126             self.pg1.sw_if_index)
 127
 128         #
 129         # now all the packets should be delivered out the respective interface
 130         #
 131         self.send_and_expect(self.pg0, pkts_0[0] * NUM_PKTS, self.pg1)
 132         self.send_and_expect(self.pg0, pkts_0[1] * NUM_PKTS, self.pg2)
 133         self.send_and_expect(self.pg0, pkts_0[2] * NUM_PKTS, self.pg3)
 134         self.send_and_expect(self.pg1, pkts_1[0] * NUM_PKTS, self.pg1)
 135         self.send_and_expect(self.pg1, pkts_1[1] * NUM_PKTS, self.pg2)
 136         self.send_and_expect(self.pg1, pkts_1[2] * NUM_PKTS, self.pg3)
 137
 138         #
 139         # check that if the SVS lookup does not match a route the packet
 140         # is forwarded using the interface's routing table
 141         #
 142         p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
 143              IP(src=self.pg0.remote_ip4, dst=self.pg0.remote_ip4) /
 144              UDP(sport=1234, dport=1234) /
 145              Raw(b'\xa5' * 100))
 146         self.send_and_expect(self.pg0, p * NUM_PKTS, self.pg0)
 147
 148         p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
 149              IP(src=self.pg1.remote_ip4, dst=self.pg1.remote_ip4) /
 150              UDP(sport=1234, dport=1234) /
 151              Raw(b'\xa5' * 100))
 152         self.send_and_expect(self.pg1, p * NUM_PKTS, self.pg1)
 153
 154         #
 155         # dump the SVS configs
 156         #
 157         ss = self.vapi.svs_dump()
 158
 159         self.assertEqual(ss[0].table_id, table_ids[0])
 160         self.assertEqual(ss[0].sw_if_index, self.pg0.sw_if_index)
 161         self.assertEqual(ss[0].af, VppEnum.vl_api_address_family_t.ADDRESS_IP4)
 162         self.assertEqual(ss[1].table_id, table_ids[1])
 163         self.assertEqual(ss[1].sw_if_index, self.pg1.sw_if_index)
 164         self.assertEqual(ss[1].af, VppEnum.vl_api_address_family_t.ADDRESS_IP4)
 165
 166         #
 167         # cleanup
 168         #
 169         self.vapi.svs_enable_disable(
 170             VppEnum.vl_api_address_family_t.ADDRESS_IP4,
 171             table_ids[0],
 172             self.pg0.sw_if_index,
 173             is_enable=0)
 174         self.vapi.svs_enable_disable(
 175             VppEnum.vl_api_address_family_t.ADDRESS_IP4,
 176             table_ids[1],
 177             self.pg1.sw_if_index,
 178             is_enable=0)
 179
 180         for table_id in table_ids:
 181             for i in range(1, 4):
 182                 self.vapi.svs_route_add_del(
 183                     table_id, "%d.0.0.0/8" % i,
 184                     0, is_add=0)
 185             self.vapi.svs_table_add_del(
 186                 VppEnum.vl_api_address_family_t.ADDRESS_IP4,
 187                 table_id,
 188                 is_add=0)
 189
 190     def test_svs6(self):
 191         """ Source VRF Select IP6 """
 192
 193         #
 194         # packets destined out of the 3 non-default table interfaces
 195         #
 196         pkts_0 = [(Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
 197                    IPv6(src="2001:1::1", dst=self.pg1.remote_ip6) /
 198                    UDP(sport=1234, dport=1234) /
 199                    Raw(b'\xa5' * 100)),
 200                   (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
 201                    IPv6(src="2001:2::1", dst=self.pg2.remote_ip6) /
 202                    UDP(sport=1234, dport=1234) /
 203                    Raw(b'\xa5' * 100)),
 204                   (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
 205                    IPv6(src="2001:3::1", dst=self.pg3.remote_ip6) /
 206                    UDP(sport=1234, dport=1234) /
 207                    Raw(b'\xa5' * 100))]
 208         pkts_1 = [(Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
 209                    IPv6(src="2001:1::1", dst=self.pg1.remote_ip6) /
 210                    UDP(sport=1234, dport=1234) /
 211                    Raw(b'\xa5' * 100)),
 212                   (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
 213                    IPv6(src="2001:2::1", dst=self.pg2.remote_ip6) /
 214                    UDP(sport=1234, dport=1234) /
 215                    Raw(b'\xa5' * 100)),
 216                   (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
 217                    IPv6(src="2001:3::1", dst=self.pg3.remote_ip6) /
 218                    UDP(sport=1234, dport=1234) /
 219                    Raw(b'\xa5' * 100))]
 220
 221         #
 222         # before adding the SVS config all these packets are dropped when
 223         # ingressing on pg0 since pg0 is in the default table
 224         #
 225         for p in pkts_0:
 226             self.send_and_assert_no_replies(self.pg0, p * 1)
 227
 228         #
 229         # Add table 1001 & 1002 into which we'll add the routes
 230         # determining the source VRF selection
 231         #
 232         table_ids = [101, 102]
 233
 234         for table_id in table_ids:
 235             self.vapi.svs_table_add_del(
 236                 VppEnum.vl_api_address_family_t.ADDRESS_IP6, table_id)
 237
 238             #
 239             # map X.0.0.0/8 to each SVS table for lookup in table X
 240             #
 241             for i in range(1, 4):
 242                 self.vapi.svs_route_add_del(
 243                     table_id, "2001:%d::/32" % i,
 244                     i)
 245
 246         #
 247         # Enable SVS on pg0/pg1 using table 1001/1002
 248         #
 249         self.vapi.svs_enable_disable(
 250             VppEnum.vl_api_address_family_t.ADDRESS_IP6,
 251             table_ids[0],
 252             self.pg0.sw_if_index)
 253         self.vapi.svs_enable_disable(
 254             VppEnum.vl_api_address_family_t.ADDRESS_IP6,
 255             table_ids[1],
 256             self.pg1.sw_if_index)
 257
 258         #
 259         # now all the packets should be delivered out the respective interface
 260         #
 261         self.send_and_expect(self.pg0, pkts_0[0] * NUM_PKTS, self.pg1)
 262         self.send_and_expect(self.pg0, pkts_0[1] * NUM_PKTS, self.pg2)
 263         self.send_and_expect(self.pg0, pkts_0[2] * NUM_PKTS, self.pg3)
 264         self.send_and_expect(self.pg1, pkts_1[0] * NUM_PKTS, self.pg1)
 265         self.send_and_expect(self.pg1, pkts_1[1] * NUM_PKTS, self.pg2)
 266         self.send_and_expect(self.pg1, pkts_1[2] * NUM_PKTS, self.pg3)
 267
 268         #
 269         # check that if the SVS lookup does not match a route the packet
 270         # is forwarded using the interface's routing table
 271         #
 272         p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
 273              IPv6(src=self.pg0.remote_ip6, dst=self.pg0.remote_ip6) /
 274              UDP(sport=1234, dport=1234) /
 275              Raw(b'\xa5' * 100))
 276         self.send_and_expect(self.pg0, p * NUM_PKTS, self.pg0)
 277
 278         p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
 279              IPv6(src=self.pg1.remote_ip6, dst=self.pg1.remote_ip6) /
 280              UDP(sport=1234, dport=1234) /
 281              Raw(b'\xa5' * 100))
 282         self.send_and_expect(self.pg1, p * NUM_PKTS, self.pg1)
 283
 284         #
 285         # dump the SVS configs
 286         #
 287         ss = self.vapi.svs_dump()
 288
 289         self.assertEqual(ss[0].table_id, table_ids[0])
 290         self.assertEqual(ss[0].sw_if_index, self.pg0.sw_if_index)
 291         self.assertEqual(ss[0].af, VppEnum.vl_api_address_family_t.ADDRESS_IP6)
 292         self.assertEqual(ss[1].table_id, table_ids[1])
 293         self.assertEqual(ss[1].sw_if_index, self.pg1.sw_if_index)
 294         self.assertEqual(ss[1].af, VppEnum.vl_api_address_family_t.ADDRESS_IP6)
 295
 296         #
 297         # cleanup
 298         #
 299         self.vapi.svs_enable_disable(
 300             VppEnum.vl_api_address_family_t.ADDRESS_IP6,
 301             table_ids[0],
 302             self.pg0.sw_if_index,
 303             is_enable=0)
 304         self.vapi.svs_enable_disable(
 305             VppEnum.vl_api_address_family_t.ADDRESS_IP6,
 306             table_ids[1],
 307             self.pg1.sw_if_index,
 308             is_enable=0)
 309         for table_id in table_ids:
 310             for i in range(1, 4):
 311                 self.vapi.svs_route_add_del(
 312                     table_id, "2001:%d::/32" % i,
 313                     0, is_add=0)
 314             self.vapi.svs_table_add_del(
 315                 VppEnum.vl_api_address_family_t.ADDRESS_IP6,
 316                 table_id,
 317                 is_add=0)
 318
 319
 320 if __name__ == '__main__':
 321     unittest.main(testRunner=VppTestRunner)