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#!/usr/bin/env python3
import unittest
from framework import VppTestCase, VppTestRunner
from vpp_ip_route import VppIpTable
from scapy.packet import Raw
from scapy.layers.l2 import Ether
from scapy.layers.inet import IP, UDP, ICMP
from scapy.layers.inet6 import IPv6
from vpp_papi import VppEnum
NUM_PKTS = 67
class TestSVS(VppTestCase):
""" SVS Test Case """
@classmethod
def setUpClass(cls):
super(TestSVS, cls).setUpClass()
@classmethod
def tearDownClass(cls):
super(TestSVS, cls).tearDownClass()
def setUp(self):
super(TestSVS, self).setUp()
# create 2 pg interfaces
self.create_pg_interfaces(range(4))
table_id = 0
for i in self.pg_interfaces:
i.admin_up()
if table_id != 0:
tbl = VppIpTable(self, table_id)
tbl.add_vpp_config()
tbl = VppIpTable(self, table_id, is_ip6=1)
tbl.add_vpp_config()
i.set_table_ip4(table_id)
i.set_table_ip6(table_id)
i.config_ip4()
i.resolve_arp()
i.config_ip6()
i.resolve_ndp()
table_id += 1
def tearDown(self):
for i in self.pg_interfaces:
i.unconfig_ip4()
i.unconfig_ip6()
i.ip6_disable()
i.set_table_ip4(0)
i.set_table_ip6(0)
i.admin_down()
super(TestSVS, self).tearDown()
def test_svs4(self):
""" Source VRF Select IP4 """
#
# packets destined out of the 3 non-default table interfaces
#
pkts_0 = [(Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IP(src="1.1.1.1", dst=self.pg1.remote_ip4) /
UDP(sport=1234, dport=1234) /
Raw('\xa5' * 100)),
(Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IP(src="2.2.2.2", dst=self.pg2.remote_ip4) /
UDP(sport=1234, dport=1234) /
Raw('\xa5' * 100)),
(Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IP(src="3.3.3.3", dst=self.pg3.remote_ip4) /
UDP(sport=1234, dport=1234) /
Raw('\xa5' * 100))]
pkts_1 = [(Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
IP(src="1.1.1.1", dst=self.pg1.remote_ip4) /
UDP(sport=1234, dport=1234) /
Raw('\xa5' * 100)),
(Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
IP(src="2.2.2.2", dst=self.pg2.remote_ip4) /
UDP(sport=1234, dport=1234) /
Raw('\xa5' * 100)),
(Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
IP(src="3.3.3.3", dst=self.pg3.remote_ip4) /
UDP(sport=1234, dport=1234) /
Raw('\xa5' * 100))]
#
# before adding the SVS config all these packets are dropped when
# ingressing on pg0 since pg0 is in the default table
#
for p in pkts_0:
self.send_and_assert_no_replies(self.pg0, p * 1)
#
# Add table 1001 & 1002 into which we'll add the routes
# determining the source VRF selection
#
table_ids = [101, 102]
for table_id in table_ids:
self.vapi.svs_table_add_del(
VppEnum.vl_api_address_family_t.ADDRESS_IP4, table_id)
#
# map X.0.0.0/8 to each SVS table for lookup in table X
#
for i in range(1, 4):
self.vapi.svs_route_add_del(
table_id, "%d.0.0.0/8" % i, i)
#
# Enable SVS on pg0/pg1 using table 1001/1002
#
self.vapi.svs_enable_disable(
VppEnum.vl_api_address_family_t.ADDRESS_IP4, table_ids[0],
self.pg0.sw_if_index)
self.vapi.svs_enable_disable(
VppEnum.vl_api_address_family_t.ADDRESS_IP4, table_ids[1],
self.pg1.sw_if_index)
#
# now all the packets should be delivered out the respective interface
#
self.send_and_expect(self.pg0, pkts_0[0] * NUM_PKTS, self.pg1)
self.send_and_expect(self.pg0, pkts_0[1] * NUM_PKTS, self.pg2)
self.send_and_expect(self.pg0, pkts_0[2] * NUM_PKTS, self.pg3)
self.send_and_expect(self.pg1, pkts_1[0] * NUM_PKTS, self.pg1)
self.send_and_expect(self.pg1, pkts_1[1] * NUM_PKTS, self.pg2)
self.send_and_expect(self.pg1, pkts_1[2] * NUM_PKTS, self.pg3)
#
# check that if the SVS lookup does not match a route the packet
# is forwarded using the interface's routing table
#
p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IP(src=self.pg0.remote_ip4, dst=self.pg0.remote_ip4) /
UDP(sport=1234, dport=1234) /
Raw('\xa5' * 100))
self.send_and_expect(self.pg0, p * NUM_PKTS, self.pg0)
p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
IP(src=self.pg1.remote_ip4, dst=self.pg1.remote_ip4) /
UDP(sport=1234, dport=1234) /
Raw('\xa5' * 100))
self.send_and_expect(self.pg1, p * NUM_PKTS, self.pg1)
#
# dump the SVS configs
#
ss = self.vapi.svs_dump()
self.assertEqual(ss[0].table_id, table_ids[0])
self.assertEqual(ss[0].sw_if_index, self.pg0.sw_if_index)
self.assertEqual(ss[0].af, VppEnum.vl_api_address_family_t.ADDRESS_IP4)
self.assertEqual(ss[1].table_id, table_ids[1])
self.assertEqual(ss[1].sw_if_index, self.pg1.sw_if_index)
self.assertEqual(ss[1].af, VppEnum.vl_api_address_family_t.ADDRESS_IP4)
#
# cleanup
#
self.vapi.svs_enable_disable(
VppEnum.vl_api_address_family_t.ADDRESS_IP4,
table_ids[0],
self.pg0.sw_if_index,
is_enable=0)
self.vapi.svs_enable_disable(
VppEnum.vl_api_address_family_t.ADDRESS_IP4,
table_ids[1],
self.pg1.sw_if_index,
is_enable=0)
for table_id in table_ids:
for i in range(1, 4):
self.vapi.svs_route_add_del(
table_id, "%d.0.0.0/8" % i,
0, is_add=0)
self.vapi.svs_table_add_del(
VppEnum.vl_api_address_family_t.ADDRESS_IP4,
table_id,
is_add=0)
def test_svs6(self):
""" Source VRF Select IP6 """
#
# packets destined out of the 3 non-default table interfaces
#
pkts_0 = [(Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IPv6(src="2001:1::1", dst=self.pg1.remote_ip6) /
UDP(sport=1234, dport=1234) /
Raw('\xa5' * 100)),
(Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IPv6(src="2001:2::1", dst=self.pg2.remote_ip6) /
UDP(sport=1234, dport=1234) /
Raw('\xa5' * 100)),
(Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IPv6(src="2001:3::1", dst=self.pg3.remote_ip6) /
UDP(sport=1234, dport=1234) /
Raw('\xa5' * 100))]
pkts_1 = [(Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
IPv6(src="2001:1::1", dst=self.pg1.remote_ip6) /
UDP(sport=1234, dport=1234) /
Raw('\xa5' * 100)),
(Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
IPv6(src="2001:2::1", dst=self.pg2.remote_ip6) /
UDP(sport=1234, dport=1234) /
Raw('\xa5' * 100)),
(Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
IPv6(src="2001:3::1", dst=self.pg3.remote_ip6) /
UDP(sport=1234, dport=1234) /
Raw('\xa5' * 100))]
#
# before adding the SVS config all these packets are dropped when
# ingressing on pg0 since pg0 is in the default table
#
for p in pkts_0:
self.send_and_assert_no_replies(self.pg0, p * 1)
#
# Add table 1001 & 1002 into which we'll add the routes
# determining the source VRF selection
#
table_ids = [101, 102]
for table_id in table_ids:
self.vapi.svs_table_add_del(
VppEnum.vl_api_address_family_t.ADDRESS_IP6, table_id)
#
# map X.0.0.0/8 to each SVS table for lookup in table X
#
for i in range(1, 4):
self.vapi.svs_route_add_del(
table_id, "2001:%d::/32" % i,
i)
#
# Enable SVS on pg0/pg1 using table 1001/1002
#
self.vapi.svs_enable_disable(
VppEnum.vl_api_address_family_t.ADDRESS_IP6,
table_ids[0],
self.pg0.sw_if_index)
self.vapi.svs_enable_disable(
VppEnum.vl_api_address_family_t.ADDRESS_IP6,
table_ids[1],
self.pg1.sw_if_index)
#
# now all the packets should be delivered out the respective interface
#
self.send_and_expect(self.pg0, pkts_0[0] * NUM_PKTS, self.pg1)
self.send_and_expect(self.pg0, pkts_0[1] * NUM_PKTS, self.pg2)
self.send_and_expect(self.pg0, pkts_0[2] * NUM_PKTS, self.pg3)
self.send_and_expect(self.pg1, pkts_1[0] * NUM_PKTS, self.pg1)
self.send_and_expect(self.pg1, pkts_1[1] * NUM_PKTS, self.pg2)
self.send_and_expect(self.pg1, pkts_1[2] * NUM_PKTS, self.pg3)
#
# check that if the SVS lookup does not match a route the packet
# is forwarded using the interface's routing table
#
p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IPv6(src=self.pg0.remote_ip6, dst=self.pg0.remote_ip6) /
UDP(sport=1234, dport=1234) /
Raw('\xa5' * 100))
self.send_and_expect(self.pg0, p * NUM_PKTS, self.pg0)
p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
IPv6(src=self.pg1.remote_ip6, dst=self.pg1.remote_ip6) /
UDP(sport=1234, dport=1234) /
Raw('\xa5' * 100))
self.send_and_expect(self.pg1, p * NUM_PKTS, self.pg1)
#
# dump the SVS configs
#
ss = self.vapi.svs_dump()
self.assertEqual(ss[0].table_id, table_ids[0])
self.assertEqual(ss[0].sw_if_index, self.pg0.sw_if_index)
self.assertEqual(ss[0].af, VppEnum.vl_api_address_family_t.ADDRESS_IP6)
self.assertEqual(ss[1].table_id, table_ids[1])
self.assertEqual(ss[1].sw_if_index, self.pg1.sw_if_index)
self.assertEqual(ss[1].af, VppEnum.vl_api_address_family_t.ADDRESS_IP6)
#
# cleanup
#
self.vapi.svs_enable_disable(
VppEnum.vl_api_address_family_t.ADDRESS_IP6,
table_ids[0],
self.pg0.sw_if_index,
is_enable=0)
self.vapi.svs_enable_disable(
VppEnum.vl_api_address_family_t.ADDRESS_IP6,
table_ids[1],
self.pg1.sw_if_index,
is_enable=0)
for table_id in table_ids:
for i in range(1, 4):
self.vapi.svs_route_add_del(
table_id, "2001:%d::/32" % i,
0, is_add=0)
self.vapi.svs_table_add_del(
VppEnum.vl_api_address_family_t.ADDRESS_IP6,
table_id,
is_add=0)
if __name__ == '__main__':
unittest.main(testRunner=VppTestRunner)
|
