#!/usr/bin/env python import random import socket import unittest from framework import VppTestCase, VppTestRunner from vpp_sub_interface import VppSubInterface, VppDot1QSubint from vpp_ip_route import VppIpRoute, VppRoutePath, DpoProto, VppIpMRoute, \ VppMRoutePath, MRouteEntryFlags, MRouteItfFlags from vpp_papi_provider import L2_VTR_OP from scapy.packet import Raw from scapy.layers.l2 import Ether, Dot1Q, ARP from scapy.layers.inet import IP, UDP from util import ppp from socket import AF_INET, inet_pton class TestDVR(VppTestCase): """ Distributed Virtual Router """ def setUp(self): super(TestDVR, self).setUp() self.create_pg_interfaces(range(4)) self.create_loopback_interfaces(range(1)) for i in self.pg_interfaces: i.admin_up() self.loop0.config_ip4() def tearDown(self): for i in self.pg_interfaces: i.admin_down() self.loop0.unconfig_ip4() super(TestDVR, self).tearDown() def assert_same_mac_addr(self, tx, rx): t_eth = tx[Ether] for p in rx: r_eth = p[Ether] self.assertEqual(t_eth.src, r_eth.src) self.assertEqual(t_eth.dst, r_eth.dst) def assert_has_vlan_tag(self, tag, rx): for p in rx: r_1q = p[Dot1Q] self.assertEqual(tag, r_1q.vlan) def assert_has_no_tag(self, rx): for p in rx: self.assertFalse(p.haslayer(Dot1Q)) def test_dvr(self): """ Distributed Virtual Router """ # # A packet destined to an IP address that is L2 bridged via # a non-tag interface # ip_non_tag_bridged = "10.10.10.10" ip_tag_bridged = "10.10.10.11" any_src_addr = "1.1.1.1" pkt_no_tag = (Ether(src=self.pg0.remote_mac, dst=self.loop0.local_mac) / IP(src=any_src_addr, dst=ip_non_tag_bridged) / UDP(sport=1234, dport=1234) / Raw('\xa5' * 100)) pkt_tag = (Ether(src=self.pg0.remote_mac, dst=self.loop0.local_mac) / IP(src=any_src_addr, dst=ip_tag_bridged) / UDP(sport=1234, dport=1234) / Raw('\xa5' * 100)) # # Two sub-interfaces so we can test VLAN tag push/pop # sub_if_on_pg2 = VppDot1QSubint(self, self.pg2, 92) sub_if_on_pg3 = VppDot1QSubint(self, self.pg3, 93) sub_if_on_pg2.admin_up() sub_if_on_pg3.admin_up() # # Put all the interfaces into a new bridge domain # self.vapi.sw_interface_set_l2_bridge(self.pg0.sw_if_index, 1) self.vapi.sw_interface_set_l2_bridge(self.pg1.sw_if_index, 1) self.vapi.sw_interface_set_l2_bridge(sub_if_on_pg2.sw_if_index, 1) self.vapi.sw_interface_set_l2_bridge(sub_if_on_pg3.sw_if_index, 1) self.vapi.sw_interface_set_l2_bridge(self.loop0.sw_if_index, 1, bvi=1) self.vapi.sw_interface_set_l2_tag_rewrite(sub_if_on_pg2.sw_if_index, L2_VTR_OP.L2_POP_1, 92) self.vapi.sw_interface_set_l2_tag_rewrite(sub_if_on_pg3.sw_if_index, L2_VTR_OP.L2_POP_1, 93) # # Add routes to bridge the traffic via a tagged an nontagged interface # route_no_tag = VppIpRoute( self, ip_non_tag_bridged, 32, [VppRoutePath("0.0.0.0", self.pg1.sw_if_index, is_dvr=1)]) route_no_tag.add_vpp_config() # # Inject the packet that arrives and leaves on a non-tagged interface # Since it's 'bridged' expect that the MAC headed is unchanged. # rx = self.send_and_expect(self.pg0, pkt_no_tag * 65, self.pg1) self.assert_same_mac_addr(pkt_no_tag, rx) self.assert_has_no_tag(rx) # # Add routes to bridge the traffic via a tagged interface # route_with_tag = VppIpRoute( self, ip_tag_bridged, 32, [VppRoutePath("0.0.0.0", sub_if_on_pg3.sw_if_index, is_dvr=1)]) route_with_tag.add_vpp_config() # # Inject the packet that arrives non-tag and leaves on a tagged # interface # rx = self.send_and_expect(self.pg0, pkt_tag * 65, self.pg3) self.assert_same_mac_addr(pkt_tag, rx) self.assert_has_vlan_tag(93, rx) # # Tag to tag # pkt_tag_to_tag = (Ether(src=self.pg2.remote_mac, dst=self.loop0.local_mac) / Dot1Q(vlan=92) / IP(src=any_src_addr, dst=ip_tag_bridged) / UDP(sport=1234, dport=1234) / Raw('\xa5' * 100)) rx = self.send_and_expect(self.pg2, pkt_tag_to_tag * 65, self.pg3) self.assert_same_mac_addr(pkt_tag_to_tag, rx) self.assert_has_vlan_tag(93, rx) # # Tag to non-Tag # pkt_tag_to_non_tag = (Ether(src=self.pg2.remote_mac, 
/*
 * Copyright (c) 2018 Cisco and/or its affiliates.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing per