test/test_svs.py

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