test/test_svs.py

   1 #!/usr/bin/env python
   2
   3 from framework import VppTestCase, VppTestRunner
   4 from vpp_ip import VppIpPrefix
   5
   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
  16 class TestSVS(VppTestCase):
  17     """ SVS Test Case """
  18
  19     def setUp(self):
  20         super(TestSVS, self).setUp()
  21
  22         # create 2 pg interfaces
  23         self.create_pg_interfaces(range(4))
  24
  25         table_id = 0
  26
  27         for i in self.pg_interfaces:
  28             i.admin_up()
  29
  30             if table_id != 0:
  31                 tbl = VppIpTable(self, table_id)
  32                 tbl.add_vpp_config()
  33                 tbl = VppIpTable(self, table_id, is_ip6=1)
  34                 tbl.add_vpp_config()
  35
  36             i.set_table_ip4(table_id)
  37             i.set_table_ip6(table_id)
  38             i.config_ip4()
  39             i.resolve_arp()
  40             i.config_ip6()
  41             i.resolve_ndp()
  42             table_id += 1
  43
  44     def tearDown(self):
  45         for i in self.pg_interfaces:
  46             i.unconfig_ip4()
  47             i.unconfig_ip6()
  48             i.ip6_disable()
  49             i.set_table_ip4(0)
  50             i.set_table_ip6(0)
  51             i.admin_down()
  52         super(TestSVS, self).tearDown()
  53
  54     def test_svs4(self):
  55         """ Source VRF Select IP4 """
  56
  57         #
  58         # packets destinet out of the 3 non-default table interfaces
  59         #
  60         pkts_0 = [(Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
  61                    IP(src="1.1.1.1", dst=self.pg1.remote_ip4) /
  62                    UDP(sport=1234, dport=1234) /
  63                    Raw('\xa5' * 100)),
  64                   (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
  65                    IP(src="2.2.2.2", dst=self.pg2.remote_ip4) /
  66                    UDP(sport=1234, dport=1234) /
  67                    Raw('\xa5' * 100)),
  68                   (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
  69                    IP(src="3.3.3.3", dst=self.pg3.remote_ip4) /
  70                    UDP(sport=1234, dport=1234) /
  71                    Raw('\xa5' * 100))]
  72         pkts_1 = [(Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
  73                    IP(src="1.1.1.1", dst=self.pg1.remote_ip4) /
  74                    UDP(sport=1234, dport=1234) /
  75                    Raw('\xa5' * 100)),
  76                   (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
  77                    IP(src="2.2.2.2", dst=self.pg2.remote_ip4) /
  78                    UDP(sport=1234, dport=1234) /
  79                    Raw('\xa5' * 100)),
  80                   (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
  81                    IP(src="3.3.3.3", dst=self.pg3.remote_ip4) /
  82                    UDP(sport=1234, dport=1234) /
  83                    Raw('\xa5' * 100))]
  84
  85         #
  86         # before adding the SVS config all these packets are dropped when
  87         # ingressing on pg0 since pg0 is in the default table
  88         #
  89         for p in pkts_0:
  90             self.send_and_assert_no_replies(self.pg0, p * 1)
  91
  92         #
  93         # Add table 1001 & 1002 into which we'll add the routes
  94         # determing the source VRF selection
  95         #
  96         table_ids = [101, 102]
  97
  98         for table_id in table_ids:
  99             self.vapi.svs_table_add_del(
 100                 VppEnum.vl_api_address_family_t.ADDRESS_IP4, table_id)
 101
 102             #
 103             # map X.0.0.0/8 to each SVS table for lookup in table X
 104             #
 105             for i in range(1, 4):
 106                 self.vapi.svs_route_add_del(
 107                     table_id,
 108                     VppIpPrefix("%d.0.0.0" % i, 8).encode(),
 109                     i)
 110
 111         #
 112         # Enable SVS on pg0/pg1 using table 1001/1002
 113         #
 114         self.vapi.svs_enable_disable(
 115             VppEnum.vl_api_address_family_t.ADDRESS_IP4, table_ids[0],
 116             self.pg0.sw_if_index)
 117         self.vapi.svs_enable_disable(
 118             VppEnum.vl_api_address_family_t.ADDRESS_IP4, table_ids[1],
 119             self.pg1.sw_if_index)
 120
 121         #
 122         # now all the packets should be delivered out the respective interface
 123         #
 124         self.send_and_expect(self.pg0, pkts_0[0] * 65, self.pg1)
 125         self.send_and_expect(self.pg0, pkts_0[1] * 65, self.pg2)
 126         self.send_and_expect(self.pg0, pkts_0[2] * 65, self.pg3)
 127         self.send_and_expect(self.pg1, pkts_1[0] * 65, self.pg1)
 128         self.send_and_expect(self.pg1, pkts_1[1] * 65, self.pg2)
 129         self.send_and_expect(self.pg1, pkts_1[2] * 65, self.pg3)
 130
 131         #
 132         # check that if the SVS lookup does not match a route the packet
 133         # is forwarded using the interface's routing table
 134         #
 135         p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
 136              IP(src=self.pg0.remote_ip4, dst=self.pg0.remote_ip4) /
 137              UDP(sport=1234, dport=1234) /
 138              Raw('\xa5' * 100))
 139         self.send_and_expect(self.pg0, p * 65, self.pg0)
 140
 141         p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
 142              IP(src=self.pg1.remote_ip4, dst=self.pg1.remote_ip4) /
 143              UDP(sport=1234, dport=1234) /
 144              Raw('\xa5' * 100))
 145         self.send_and_expect(self.pg1, p * 65, self.pg1)
 146
 147         #
 148         # dump the SVS configs
 149         #
 150         ss = self.vapi.svs_dump()
 151
 152         self.assertEqual(ss[0].table_id, table_ids[0])
 153         self.assertEqual(ss[0].sw_if_index, self.pg0.sw_if_index)
 154         self.assertEqual(ss[0].af, VppEnum.vl_api_address_family_t.ADDRESS_IP4)
 155         self.assertEqual(ss[1].table_id, table_ids[1])
 156         self.assertEqual(ss[1].sw_if_index, self.pg1.sw_if_index)
 157         self.assertEqual(ss[1].af, VppEnum.vl_api_address_family_t.ADDRESS_IP4)
 158
 159         #
 160         # cleanup
 161         #
 162         self.vapi.svs_enable_disable(
 163             VppEnum.vl_api_address_family_t.ADDRESS_IP4,
 164             table_ids[0],
 165             self.pg0.sw_if_index,
 166             is_enable=0)
 167         self.vapi.svs_enable_disable(
 168             VppEnum.vl_api_address_family_t.ADDRESS_IP4,
 169             table_ids[1],
 170             self.pg1.sw_if_index,
 171             is_enable=0)
 172
 173         for table_id in table_ids:
 174             for i in range(1, 4):
 175                 self.vapi.svs_route_add_del(
 176                     table_id,
 177                     VppIpPrefix("%d.0.0.0" % i, 8).encode(),
 178                     0, is_add=0)
 179             self.vapi.svs_table_add_del(
 180                 VppEnum.vl_api_address_family_t.ADDRESS_IP4,
 181                 table_id,
 182                 is_add=0)
 183
 184     def test_svs6(self):
 185         """ Source VRF Select IP6 """
 186
 187         #
 188         # packets destinet out of the 3 non-default table interfaces
 189         #
 190         pkts_0 = [(Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
 191                    IPv6(src="2001:1::1", dst=self.pg1.remote_ip6) /
 192                    UDP(sport=1234, dport=1234) /
 193                    Raw('\xa5' * 100)),
 194                   (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
 195                    IPv6(src="2001:2::1", dst=self.pg2.remote_ip6) /
 196                    UDP(sport=1234, dport=1234) /
 197                    Raw('\xa5' * 100)),
 198                   (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
 199                    IPv6(src="2001:3::1", dst=self.pg3.remote_ip6) /
 200                    UDP(sport=1234, dport=1234) /
 201                    Raw('\xa5' * 100))]
 202         pkts_1 = [(Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
 203                    IPv6(src="2001:1::1", dst=self.pg1.remote_ip6) /
 204                    UDP(sport=1234, dport=1234) /
 205                    Raw('\xa5' * 100)),
 206                   (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
 207                    IPv6(src="2001:2::1", dst=self.pg2.remote_ip6) /
 208                    UDP(sport=1234, dport=1234) /
 209                    Raw('\xa5' * 100)),
 210                   (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
 211                    IPv6(src="2001:3::1", dst=self.pg3.remote_ip6) /
 212                    UDP(sport=1234, dport=1234) /
 213                    Raw('\xa5' * 100))]
 214
 215         #
 216         # before adding the SVS config all these packets are dropped when
 217         # ingressing on pg0 since pg0 is in the default table
 218         #
 219         for p in pkts_0:
 220             self.send_and_assert_no_replies(self.pg0, p * 1)
 221
 222         #
 223         # Add table 1001 & 1002 into which we'll add the routes
 224         # determing the source VRF selection
 225         #
 226         table_ids = [101, 102]
 227
 228         for table_id in table_ids:
 229             self.vapi.svs_table_add_del(
 230                 VppEnum.vl_api_address_family_t.ADDRESS_IP6, table_id)
 231
 232             #
 233             # map X.0.0.0/8 to each SVS table for lookup in table X
 234             #
 235             for i in range(1, 4):
 236                 self.vapi.svs_route_add_del(
 237                     table_id,
 238                     VppIpPrefix("2001:%d::" % i, 32).encode(),
 239                     i)
 240
 241         #
 242         # Enable SVS on pg0/pg1 using table 1001/1002
 243         #
 244         self.vapi.svs_enable_disable(
 245             VppEnum.vl_api_address_family_t.ADDRESS_IP6,
 246             table_ids[0],
 247             self.pg0.sw_if_index)
 248         self.vapi.svs_enable_disable(
 249             VppEnum.vl_api_address_family_t.ADDRESS_IP6,
 250             table_ids[1],
 251             self.pg1.sw_if_index)
 252
 253         #
 254         # now all the packets should be delivered out the respective interface
 255         #
 256         self.send_and_expect(self.pg0, pkts_0[0] * 65, self.pg1)
 257         self.send_and_expect(self.pg0, pkts_0[1] * 65, self.pg2)
 258         self.send_and_expect(self.pg0, pkts_0[2] * 65, self.pg3)
 259         self.send_and_expect(self.pg1, pkts_1[0] * 65, self.pg1)
 260         self.send_and_expect(self.pg1, pkts_1[1] * 65, self.pg2)
 261         self.send_and_expect(self.pg1, pkts_1[2] * 65, self.pg3)
 262
 263         #
 264         # check that if the SVS lookup does not match a route the packet
 265         # is forwarded using the interface's routing table
 266         #
 267         p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
 268              IPv6(src=self.pg0.remote_ip6, dst=self.pg0.remote_ip6) /
 269              UDP(sport=1234, dport=1234) /
 270              Raw('\xa5' * 100))
 271         self.send_and_expect(self.pg0, p * 65, self.pg0)
 272
 273         p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
 274              IPv6(src=self.pg1.remote_ip6, dst=self.pg1.remote_ip6) /
 275              UDP(sport=1234, dport=1234) /
 276              Raw('\xa5' * 100))
 277         self.send_and_expect(self.pg1, p * 65, self.pg1)
 278
 279         #
 280         # dump the SVS configs
 281         #
 282         ss = self.vapi.svs_dump()
 283
 284         self.assertEqual(ss[0].table_id, table_ids[0])
 285         self.assertEqual(ss[0].sw_if_index, self.pg0.sw_if_index)
 286         self.assertEqual(ss[0].af, VppEnum.vl_api_address_family_t.ADDRESS_IP6)
 287         self.assertEqual(ss[1].table_id, table_ids[1])
 288         self.assertEqual(ss[1].sw_if_index, self.pg1.sw_if_index)
 289         self.assertEqual(ss[1].af, VppEnum.vl_api_address_family_t.ADDRESS_IP6)
 290
 291         #
 292         # cleanup
 293         #
 294         self.vapi.svs_enable_disable(
 295             VppEnum.vl_api_address_family_t.ADDRESS_IP6,
 296             table_ids[0],
 297             self.pg0.sw_if_index,
 298             is_enable=0)
 299         self.vapi.svs_enable_disable(
 300             VppEnum.vl_api_address_family_t.ADDRESS_IP6,
 301             table_ids[1],
 302             self.pg1.sw_if_index,
 303             is_enable=0)
 304         for table_id in table_ids:
 305             for i in range(1, 4):
 306                 self.vapi.svs_route_add_del(
 307                     table_id,
 308                     VppIpPrefix("2001:%d::" % i, 32).encode(),
 309                     0, is_add=0)
 310             self.vapi.svs_table_add_del(
 311                 VppEnum.vl_api_address_family_t.ADDRESS_IP6,
 312                 table_id,
 313                 is_add=0)
 314
 315
 316 if __name__ == '__main__':
 317     unittest.main(testRunner=VppTestRunner)