test/test_svs.py

   1 #!/usr/bin/env python
   2
   3 from framework import VppTestCase, VppTestRunner
   4 from vpp_ip_route import VppIpTable
   5
   6 from scapy.packet import Raw
   7 from scapy.layers.l2 import Ether
   8 from scapy.layers.inet import IP, UDP, ICMP
   9 from scapy.layers.inet6 import IPv6
  10
  11 from vpp_papi import VppEnum
  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(
  98                 VppEnum.vl_api_address_family_t.ADDRESS_IP4, table_id)
  99
 100             #
 101             # map X.0.0.0/8 to each SVS table for lookup in table X
 102             #
 103             for i in range(1, 4):
 104                 self.vapi.svs_route_add_del(
 105                     table_id, "%d.0.0.0/8" % i, i)
 106
 107         #
 108         # Enable SVS on pg0/pg1 using table 1001/1002
 109         #
 110         self.vapi.svs_enable_disable(
 111             VppEnum.vl_api_address_family_t.ADDRESS_IP4, table_ids[0],
 112             self.pg0.sw_if_index)
 113         self.vapi.svs_enable_disable(
 114             VppEnum.vl_api_address_family_t.ADDRESS_IP4, table_ids[1],
 115             self.pg1.sw_if_index)
 116
 117         #
 118         # now all the packets should be delivered out the respective interface
 119         #
 120         self.send_and_expect(self.pg0, pkts_0[0] * 65, self.pg1)
 121         self.send_and_expect(self.pg0, pkts_0[1] * 65, self.pg2)
 122         self.send_and_expect(self.pg0, pkts_0[2] * 65, self.pg3)
 123         self.send_and_expect(self.pg1, pkts_1[0] * 65, self.pg1)
 124         self.send_and_expect(self.pg1, pkts_1[1] * 65, self.pg2)
 125         self.send_and_expect(self.pg1, pkts_1[2] * 65, self.pg3)
 126
 127         #
 128         # check that if the SVS lookup does not match a route the packet
 129         # is forwarded using the interface's routing table
 130         #
 131         p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
 132              IP(src=self.pg0.remote_ip4, dst=self.pg0.remote_ip4) /
 133              UDP(sport=1234, dport=1234) /
 134              Raw('\xa5' * 100))
 135         self.send_and_expect(self.pg0, p * 65, self.pg0)
 136
 137         p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
 138              IP(src=self.pg1.remote_ip4, dst=self.pg1.remote_ip4) /
 139              UDP(sport=1234, dport=1234) /
 140              Raw('\xa5' * 100))
 141         self.send_and_expect(self.pg1, p * 65, self.pg1)
 142
 143         #
 144         # dump the SVS configs
 145         #
 146         ss = self.vapi.svs_dump()
 147
 148         self.assertEqual(ss[0].table_id, table_ids[0])
 149         self.assertEqual(ss[0].sw_if_index, self.pg0.sw_if_index)
 150         self.assertEqual(ss[0].af, VppEnum.vl_api_address_family_t.ADDRESS_IP4)
 151         self.assertEqual(ss[1].table_id, table_ids[1])
 152         self.assertEqual(ss[1].sw_if_index, self.pg1.sw_if_index)
 153         self.assertEqual(ss[1].af, VppEnum.vl_api_address_family_t.ADDRESS_IP4)
 154
 155         #
 156         # cleanup
 157         #
 158         self.vapi.svs_enable_disable(
 159             VppEnum.vl_api_address_family_t.ADDRESS_IP4,
 160             table_ids[0],
 161             self.pg0.sw_if_index,
 162             is_enable=0)
 163         self.vapi.svs_enable_disable(
 164             VppEnum.vl_api_address_family_t.ADDRESS_IP4,
 165             table_ids[1],
 166             self.pg1.sw_if_index,
 167             is_enable=0)
 168
 169         for table_id in table_ids:
 170             for i in range(1, 4):
 171                 self.vapi.svs_route_add_del(
 172                     table_id, "%d.0.0.0/8" % i,
 173                     0, is_add=0)
 174             self.vapi.svs_table_add_del(
 175                 VppEnum.vl_api_address_family_t.ADDRESS_IP4,
 176                 table_id,
 177                 is_add=0)
 178
 179     def test_svs6(self):
 180         """ Source VRF Select IP6 """
 181
 182         #
 183         # packets destinet out of the 3 non-default table interfaces
 184         #
 185         pkts_0 = [(Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
 186                    IPv6(src="2001:1::1", dst=self.pg1.remote_ip6) /
 187                    UDP(sport=1234, dport=1234) /
 188                    Raw('\xa5' * 100)),
 189                   (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
 190                    IPv6(src="2001:2::1", dst=self.pg2.remote_ip6) /
 191                    UDP(sport=1234, dport=1234) /
 192                    Raw('\xa5' * 100)),
 193                   (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
 194                    IPv6(src="2001:3::1", dst=self.pg3.remote_ip6) /
 195                    UDP(sport=1234, dport=1234) /
 196                    Raw('\xa5' * 100))]
 197         pkts_1 = [(Ether(dst=self.pg1.local_mac, src=self.pg1.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.pg1.local_mac, src=self.pg1.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.pg1.local_mac, src=self.pg1.remote_mac) /
 206                    IPv6(src="2001:3::1", dst=self.pg3.remote_ip6) /
 207                    UDP(sport=1234, dport=1234) /
 208                    Raw('\xa5' * 100))]
 209
 210         #
 211         # before adding the SVS config all these packets are dropped when
 212         # ingressing on pg0 since pg0 is in the default table
 213         #
 214         for p in pkts_0:
 215             self.send_and_assert_no_replies(self.pg0, p * 1)
 216
 217         #
 218         # Add table 1001 & 1002 into which we'll add the routes
 219         # determing the source VRF selection
 220         #
 221         table_ids = [101, 102]
 222
 223         for table_id in table_ids:
 224             self.vapi.svs_table_add_del(
 225                 VppEnum.vl_api_address_family_t.ADDRESS_IP6, table_id)
 226
 227             #
 228             # map X.0.0.0/8 to each SVS table for lookup in table X
 229             #
 230             for i in range(1, 4):
 231                 self.vapi.svs_route_add_del(
 232                     table_id, "2001:%d::/32" % i,
 233                     i)
 234
 235         #
 236         # Enable SVS on pg0/pg1 using table 1001/1002
 237         #
 238         self.vapi.svs_enable_disable(
 239             VppEnum.vl_api_address_family_t.ADDRESS_IP6,
 240             table_ids[0],
 241             self.pg0.sw_if_index)
 242         self.vapi.svs_enable_disable(
 243             VppEnum.vl_api_address_family_t.ADDRESS_IP6,
 244             table_ids[1],
 245             self.pg1.sw_if_index)
 246
 247         #
 248         # now all the packets should be delivered out the respective interface
 249         #
 250         self.send_and_expect(self.pg0, pkts_0[0] * 65, self.pg1)
 251         self.send_and_expect(self.pg0, pkts_0[1] * 65, self.pg2)
 252         self.send_and_expect(self.pg0, pkts_0[2] * 65, self.pg3)
 253         self.send_and_expect(self.pg1, pkts_1[0] * 65, self.pg1)
 254         self.send_and_expect(self.pg1, pkts_1[1] * 65, self.pg2)
 255         self.send_and_expect(self.pg1, pkts_1[2] * 65, self.pg3)
 256
 257         #
 258         # check that if the SVS lookup does not match a route the packet
 259         # is forwarded using the interface's routing table
 260         #
 261         p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
 262              IPv6(src=self.pg0.remote_ip6, dst=self.pg0.remote_ip6) /
 263              UDP(sport=1234, dport=1234) /
 264              Raw('\xa5' * 100))
 265         self.send_and_expect(self.pg0, p * 65, self.pg0)
 266
 267         p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
 268              IPv6(src=self.pg1.remote_ip6, dst=self.pg1.remote_ip6) /
 269              UDP(sport=1234, dport=1234) /
 270              Raw('\xa5' * 100))
 271         self.send_and_expect(self.pg1, p * 65, self.pg1)
 272
 273         #
 274         # dump the SVS configs
 275         #
 276         ss = self.vapi.svs_dump()
 277
 278         self.assertEqual(ss[0].table_id, table_ids[0])
 279         self.assertEqual(ss[0].sw_if_index, self.pg0.sw_if_index)
 280         self.assertEqual(ss[0].af, VppEnum.vl_api_address_family_t.ADDRESS_IP6)
 281         self.assertEqual(ss[1].table_id, table_ids[1])
 282         self.assertEqual(ss[1].sw_if_index, self.pg1.sw_if_index)
 283         self.assertEqual(ss[1].af, VppEnum.vl_api_address_family_t.ADDRESS_IP6)
 284
 285         #
 286         # cleanup
 287         #
 288         self.vapi.svs_enable_disable(
 289             VppEnum.vl_api_address_family_t.ADDRESS_IP6,
 290             table_ids[0],
 291             self.pg0.sw_if_index,
 292             is_enable=0)
 293         self.vapi.svs_enable_disable(
 294             VppEnum.vl_api_address_family_t.ADDRESS_IP6,
 295             table_ids[1],
 296             self.pg1.sw_if_index,
 297             is_enable=0)
 298         for table_id in table_ids:
 299             for i in range(1, 4):
 300                 self.vapi.svs_route_add_del(
 301                     table_id, "2001:%d::/32" % i,
 302                     0, is_add=0)
 303             self.vapi.svs_table_add_del(
 304                 VppEnum.vl_api_address_family_t.ADDRESS_IP6,
 305                 table_id,
 306                 is_add=0)
 307
 308
 309 if __name__ == '__main__':
 310     unittest.main(testRunner=VppTestRunner)