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.ip6_disable()
  59             i.set_table_ip4(0)
  60             i.set_table_ip6(0)
  61             i.admin_down()
  62         super(TestSVS, self).tearDown()
  63
  64     def test_svs4(self):
  65         """ Source VRF Select IP4 """
  66
  67         #
  68         # packets destined out of the 3 non-default table interfaces
  69         #
  70         pkts_0 = [(Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
  71                    IP(src="1.1.1.1", dst=self.pg1.remote_ip4) /
  72                    UDP(sport=1234, dport=1234) /
  73                    Raw('\xa5' * 100)),
  74                   (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
  75                    IP(src="2.2.2.2", dst=self.pg2.remote_ip4) /
  76                    UDP(sport=1234, dport=1234) /
  77                    Raw('\xa5' * 100)),
  78                   (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
  79                    IP(src="3.3.3.3", dst=self.pg3.remote_ip4) /
  80                    UDP(sport=1234, dport=1234) /
  81                    Raw('\xa5' * 100))]
  82         pkts_1 = [(Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
  83                    IP(src="1.1.1.1", dst=self.pg1.remote_ip4) /
  84                    UDP(sport=1234, dport=1234) /
  85                    Raw('\xa5' * 100)),
  86                   (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
  87                    IP(src="2.2.2.2", dst=self.pg2.remote_ip4) /
  88                    UDP(sport=1234, dport=1234) /
  89                    Raw('\xa5' * 100)),
  90                   (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
  91                    IP(src="3.3.3.3", dst=self.pg3.remote_ip4) /
  92                    UDP(sport=1234, dport=1234) /
  93                    Raw('\xa5' * 100))]
  94
  95         #
  96         # before adding the SVS config all these packets are dropped when
  97         # ingressing on pg0 since pg0 is in the default table
  98         #
  99         for p in pkts_0:
 100             self.send_and_assert_no_replies(self.pg0, p * 1)
 101
 102         #
 103         # Add table 1001 & 1002 into which we'll add the routes
 104         # determining the source VRF selection
 105         #
 106         table_ids = [101, 102]
 107
 108         for table_id in table_ids:
 109             self.vapi.svs_table_add_del(
 110                 VppEnum.vl_api_address_family_t.ADDRESS_IP4, table_id)
 111
 112             #
 113             # map X.0.0.0/8 to each SVS table for lookup in table X
 114             #
 115             for i in range(1, 4):
 116                 self.vapi.svs_route_add_del(
 117                     table_id, "%d.0.0.0/8" % i, i)
 118
 119         #
 120         # Enable SVS on pg0/pg1 using table 1001/1002
 121         #
 122         self.vapi.svs_enable_disable(
 123             VppEnum.vl_api_address_family_t.ADDRESS_IP4, table_ids[0],
 124             self.pg0.sw_if_index)
 125         self.vapi.svs_enable_disable(
 126             VppEnum.vl_api_address_family_t.ADDRESS_IP4, table_ids[1],
 127             self.pg1.sw_if_index)
 128
 129         #
 130         # now all the packets should be delivered out the respective interface
 131         #
 132         self.send_and_expect(self.pg0, pkts_0[0] * NUM_PKTS, self.pg1)
 133         self.send_and_expect(self.pg0, pkts_0[1] * NUM_PKTS, self.pg2)
 134         self.send_and_expect(self.pg0, pkts_0[2] * NUM_PKTS, self.pg3)
 135         self.send_and_expect(self.pg1, pkts_1[0] * NUM_PKTS, self.pg1)
 136         self.send_and_expect(self.pg1, pkts_1[1] * NUM_PKTS, self.pg2)
 137         self.send_and_expect(self.pg1, pkts_1[2] * NUM_PKTS, self.pg3)
 138
 139         #
 140         # check that if the SVS lookup does not match a route the packet
 141         # is forwarded using the interface's routing table
 142         #
 143         p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
 144              IP(src=self.pg0.remote_ip4, dst=self.pg0.remote_ip4) /
 145              UDP(sport=1234, dport=1234) /
 146              Raw('\xa5' * 100))
 147         self.send_and_expect(self.pg0, p * NUM_PKTS, self.pg0)
 148
 149         p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
 150              IP(src=self.pg1.remote_ip4, dst=self.pg1.remote_ip4) /
 151              UDP(sport=1234, dport=1234) /
 152              Raw('\xa5' * 100))
 153         self.send_and_expect(self.pg1, p * NUM_PKTS, self.pg1)
 154
 155         #
 156         # dump the SVS configs
 157         #
 158         ss = self.vapi.svs_dump()
 159
 160         self.assertEqual(ss[0].table_id, table_ids[0])
 161         self.assertEqual(ss[0].sw_if_index, self.pg0.sw_if_index)
 162         self.assertEqual(ss[0].af, VppEnum.vl_api_address_family_t.ADDRESS_IP4)
 163         self.assertEqual(ss[1].table_id, table_ids[1])
 164         self.assertEqual(ss[1].sw_if_index, self.pg1.sw_if_index)
 165         self.assertEqual(ss[1].af, VppEnum.vl_api_address_family_t.ADDRESS_IP4)
 166
 167         #
 168         # cleanup
 169         #
 170         self.vapi.svs_enable_disable(
 171             VppEnum.vl_api_address_family_t.ADDRESS_IP4,
 172             table_ids[0],
 173             self.pg0.sw_if_index,
 174             is_enable=0)
 175         self.vapi.svs_enable_disable(
 176             VppEnum.vl_api_address_family_t.ADDRESS_IP4,
 177             table_ids[1],
 178             self.pg1.sw_if_index,
 179             is_enable=0)
 180
 181         for table_id in table_ids:
 182             for i in range(1, 4):
 183                 self.vapi.svs_route_add_del(
 184                     table_id, "%d.0.0.0/8" % i,
 185                     0, is_add=0)
 186             self.vapi.svs_table_add_del(
 187                 VppEnum.vl_api_address_family_t.ADDRESS_IP4,
 188                 table_id,
 189                 is_add=0)
 190
 191     def test_svs6(self):
 192         """ Source VRF Select IP6 """
 193
 194         #
 195         # packets destined out of the 3 non-default table interfaces
 196         #
 197         pkts_0 = [(Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
 198                    IPv6(src="2001:1::1", dst=self.pg1.remote_ip6) /
 199                    UDP(sport=1234, dport=1234) /
 200                    Raw('\xa5' * 100)),
 201                   (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
 202                    IPv6(src="2001:2::1", dst=self.pg2.remote_ip6) /
 203                    UDP(sport=1234, dport=1234) /
 204                    Raw('\xa5' * 100)),
 205                   (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
 206                    IPv6(src="2001:3::1", dst=self.pg3.remote_ip6) /
 207                    UDP(sport=1234, dport=1234) /
 208                    Raw('\xa5' * 100))]
 209         pkts_1 = [(Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
 210                    IPv6(src="2001:1::1", dst=self.pg1.remote_ip6) /
 211                    UDP(sport=1234, dport=1234) /
 212                    Raw('\xa5' * 100)),
 213                   (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
 214                    IPv6(src="2001:2::1", dst=self.pg2.remote_ip6) /
 215                    UDP(sport=1234, dport=1234) /
 216                    Raw('\xa5' * 100)),
 217                   (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
 218                    IPv6(src="2001:3::1", dst=self.pg3.remote_ip6) /
 219                    UDP(sport=1234, dport=1234) /
 220                    Raw('\xa5' * 100))]
 221
 222         #
 223         # before adding the SVS config all these packets are dropped when
 224         # ingressing on pg0 since pg0 is in the default table
 225         #
 226         for p in pkts_0:
 227             self.send_and_assert_no_replies(self.pg0, p * 1)
 228
 229         #
 230         # Add table 1001 & 1002 into which we'll add the routes
 231         # determining the source VRF selection
 232         #
 233         table_ids = [101, 102]
 234
 235         for table_id in table_ids:
 236             self.vapi.svs_table_add_del(
 237                 VppEnum.vl_api_address_family_t.ADDRESS_IP6, table_id)
 238
 239             #
 240             # map X.0.0.0/8 to each SVS table for lookup in table X
 241             #
 242             for i in range(1, 4):
 243                 self.vapi.svs_route_add_del(
 244                     table_id, "2001:%d::/32" % i,
 245                     i)
 246
 247         #
 248         # Enable SVS on pg0/pg1 using table 1001/1002
 249         #
 250         self.vapi.svs_enable_disable(
 251             VppEnum.vl_api_address_family_t.ADDRESS_IP6,
 252             table_ids[0],
 253             self.pg0.sw_if_index)
 254         self.vapi.svs_enable_disable(
 255             VppEnum.vl_api_address_family_t.ADDRESS_IP6,
 256             table_ids[1],
 257             self.pg1.sw_if_index)
 258
 259         #
 260         # now all the packets should be delivered out the respective interface
 261         #
 262         self.send_and_expect(self.pg0, pkts_0[0] * NUM_PKTS, self.pg1)
 263         self.send_and_expect(self.pg0, pkts_0[1] * NUM_PKTS, self.pg2)
 264         self.send_and_expect(self.pg0, pkts_0[2] * NUM_PKTS, self.pg3)
 265         self.send_and_expect(self.pg1, pkts_1[0] * NUM_PKTS, self.pg1)
 266         self.send_and_expect(self.pg1, pkts_1[1] * NUM_PKTS, self.pg2)
 267         self.send_and_expect(self.pg1, pkts_1[2] * NUM_PKTS, self.pg3)
 268
 269         #
 270         # check that if the SVS lookup does not match a route the packet
 271         # is forwarded using the interface's routing table
 272         #
 273         p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
 274              IPv6(src=self.pg0.remote_ip6, dst=self.pg0.remote_ip6) /
 275              UDP(sport=1234, dport=1234) /
 276              Raw('\xa5' * 100))
 277         self.send_and_expect(self.pg0, p * NUM_PKTS, self.pg0)
 278
 279         p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
 280              IPv6(src=self.pg1.remote_ip6, dst=self.pg1.remote_ip6) /
 281              UDP(sport=1234, dport=1234) /
 282              Raw('\xa5' * 100))
 283         self.send_and_expect(self.pg1, p * NUM_PKTS, self.pg1)
 284
 285         #
 286         # dump the SVS configs
 287         #
 288         ss = self.vapi.svs_dump()
 289
 290         self.assertEqual(ss[0].table_id, table_ids[0])
 291         self.assertEqual(ss[0].sw_if_index, self.pg0.sw_if_index)
 292         self.assertEqual(ss[0].af, VppEnum.vl_api_address_family_t.ADDRESS_IP6)
 293         self.assertEqual(ss[1].table_id, table_ids[1])
 294         self.assertEqual(ss[1].sw_if_index, self.pg1.sw_if_index)
 295         self.assertEqual(ss[1].af, VppEnum.vl_api_address_family_t.ADDRESS_IP6)
 296
 297         #
 298         # cleanup
 299         #
 300         self.vapi.svs_enable_disable(
 301             VppEnum.vl_api_address_family_t.ADDRESS_IP6,
 302             table_ids[0],
 303             self.pg0.sw_if_index,
 304             is_enable=0)
 305         self.vapi.svs_enable_disable(
 306             VppEnum.vl_api_address_family_t.ADDRESS_IP6,
 307             table_ids[1],
 308             self.pg1.sw_if_index,
 309             is_enable=0)
 310         for table_id in table_ids:
 311             for i in range(1, 4):
 312                 self.vapi.svs_route_add_del(
 313                     table_id, "2001:%d::/32" % i,
 314                     0, is_add=0)
 315             self.vapi.svs_table_add_del(
 316                 VppEnum.vl_api_address_family_t.ADDRESS_IP6,
 317                 table_id,
 318                 is_add=0)
 319
 320
 321 if __name__ == '__main__':
 322     unittest.main(testRunner=VppTestRunner)