--- /dev/null
+#!/usr/bin/env python3
+
+#
+# Copyright 2019-2020 Rubicon Communications, LLC (Netgate)
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+import unittest
+import time
+from socket import inet_pton, inet_ntop, AF_INET6
+
+from vpp_object import VppObject
+from vpp_papi import VppEnum
+
+from scapy.packet import Raw
+from scapy.layers.l2 import Ether, ARP
+from scapy.layers.inet import IP, ICMP, icmptypes
+from scapy.layers.inet6 import IPv6, ipv6nh, IPv6ExtHdrHopByHop, \
+ ICMPv6MLReport2, ICMPv6ND_NA, ICMPv6ND_NS, ICMPv6NDOptDstLLAddr, \
+ ICMPv6NDOptSrcLLAddr, ICMPv6EchoRequest, ICMPv6EchoReply
+from scapy.contrib.igmpv3 import IGMPv3, IGMPv3mr, IGMPv3gr
+from scapy.layers.vrrp import IPPROTO_VRRP, VRRPv3
+from scapy.utils6 import in6_getnsma, in6_getnsmac
+from framework import VppTestCase, VppTestRunner
+from util import ip6_normalize
+
+VRRP_VR_FLAG_PREEMPT = 1
+VRRP_VR_FLAG_ACCEPT = 2
+VRRP_VR_FLAG_UNICAST = 4
+VRRP_VR_FLAG_IPV6 = 8
+
+VRRP_VR_STATE_INIT = 0
+VRRP_VR_STATE_BACKUP = 1
+VRRP_VR_STATE_MASTER = 2
+VRRP_VR_STATE_INTF_DOWN = 3
+
+
+def is_non_arp(p):
+ """ Want to filter out advertisements, igmp, etc"""
+ if p.haslayer(ARP):
+ return False
+
+ return True
+
+
+def is_not_adv(p):
+ """ Filter out everything but advertisements. E.g. multicast RD/ND """
+ if p.haslayer(VRRPv3):
+ return False
+
+ return True
+
+
+def is_not_echo_reply(p):
+ """ filter out advertisements and other while waiting for echo reply """
+ if p.haslayer(IP) and p.haslayer(ICMP):
+ if icmptypes[p[ICMP].type] == "echo-reply":
+ return False
+ elif p.haslayer(IPv6) and p.haslayer(ICMPv6EchoReply):
+ return False
+
+ return True
+
+
+class VppVRRPVirtualRouter(VppObject):
+
+ def __init__(self,
+ test,
+ intf,
+ vr_id,
+ prio=100,
+ intvl=100,
+ flags=VRRP_VR_FLAG_PREEMPT,
+ vips=None):
+ self._test = test
+ self._intf = intf
+ self._sw_if_index = self._intf.sw_if_index
+ self._vr_id = vr_id
+ self._prio = prio
+ self._intvl = intvl
+ self._flags = flags
+ if (flags & VRRP_VR_FLAG_IPV6):
+ self._is_ipv6 = 1
+ self._adv_dest_mac = "33:33:00:00:00:12"
+ self._virtual_mac = "00:00:5e:00:02:%02x" % vr_id
+ self._adv_dest_ip = "ff02::12"
+ self._vips = ([intf.local_ip6] if vips is None else vips)
+ else:
+ self._is_ipv6 = 0
+ self._adv_dest_mac = "01:00:5e:00:00:12"
+ self._virtual_mac = "00:00:5e:00:01:%02x" % vr_id
+ self._adv_dest_ip = "224.0.0.18"
+ self._vips = ([intf.local_ip4] if vips is None else vips)
+ self._tracked_ifs = []
+
+ def add_vpp_config(self):
+ self._test.vapi.vrrp_vr_add_del(is_add=1,
+ sw_if_index=self._intf.sw_if_index,
+ vr_id=self._vr_id,
+ priority=self._prio,
+ interval=self._intvl,
+ flags=self._flags,
+ n_addrs=len(self._vips),
+ addrs=self._vips)
+
+ def query_vpp_config(self):
+ vrs = self._test.vapi.vrrp_vr_dump(sw_if_index=self._intf.sw_if_index)
+ for vr in vrs:
+ if vr.config.vr_id != self._vr_id:
+ continue
+
+ is_ipv6 = (1 if (vr.config.flags & VRRP_VR_FLAG_IPV6) else 0)
+ if is_ipv6 != self._is_ipv6:
+ continue
+
+ return vr
+
+ return None
+
+ def remove_vpp_config(self):
+ self._test.vapi.vrrp_vr_add_del(is_add=0,
+ sw_if_index=self._intf.sw_if_index,
+ vr_id=self._vr_id,
+ priority=self._prio,
+ interval=self._intvl,
+ flags=self._flags,
+ n_addrs=len(self._vips),
+ addrs=self._vips)
+
+ def start_stop(self, is_start):
+ self._test.vapi.vrrp_vr_start_stop(is_start=is_start,
+ sw_if_index=self._intf.sw_if_index,
+ vr_id=self._vr_id,
+ is_ipv6=self._is_ipv6)
+ self._start_time = (time.time() if is_start else None)
+
+ def add_del_tracked_interface(self, is_add, sw_if_index, prio):
+ args = {
+ 'sw_if_index': self._intf.sw_if_index,
+ 'is_ipv6': self._is_ipv6,
+ 'vr_id': self._vr_id,
+ 'is_add': is_add,
+ 'n_ifs': 1,
+ 'ifs': [{'sw_if_index': sw_if_index, 'priority': prio}]
+ }
+ self._test.vapi.vrrp_vr_track_if_add_del(**args)
+ self._tracked_ifs.append(args['ifs'][0])
+
+ def set_unicast_peers(self, addrs):
+ args = {
+ 'sw_if_index': self._intf.sw_if_index,
+ 'is_ipv6': self._is_ipv6,
+ 'vr_id': self._vr_id,
+ 'n_addrs': len(addrs),
+ 'addrs': addrs
+ }
+ self._test.vapi.vrrp_vr_set_peers(**args)
+ self._unicast_peers = addrs
+
+ def vrrp_adv_packet(self, prio=None, src_ip=None):
+ dst_ip = self._adv_dest_ip
+ if prio is None:
+ prio = self._prio
+ eth = Ether(dst=self._adv_dest_mac, src=self._virtual_mac)
+ vrrp = VRRPv3(vrid=self._vr_id, priority=prio,
+ ipcount=len(self._vips), adv=self._intvl)
+ if self._is_ipv6:
+ src_ip = (self._intf.local_ip6_ll if src_ip is None else src_ip)
+ ip = IPv6(src=src_ip, dst=dst_ip, nh=IPPROTO_VRRP, hlim=255)
+ vrrp.addrlist = self._vips
+ else:
+ src_ip = (self._intf.local_ip4 if src_ip is None else src_ip)
+ ip = IP(src=src_ip, dst=dst_ip, proto=IPPROTO_VRRP, ttl=255, id=0)
+ vrrp.addrlist = self._vips
+
+ # Fill in default values & checksums
+ pkt = Ether(raw(eth / ip / vrrp))
+ return pkt
+
+ def start_time(self):
+ return self._start_time
+
+ def virtual_mac(self):
+ return self._virtual_mac
+
+ def virtual_ips(self):
+ return self._vips
+
+ def adv_dest_mac(self):
+ return self._adv_dest_mac
+
+ def adv_dest_ip(self):
+ return self._adv_dest_ip
+
+ def priority(self):
+ return self._prio
+
+ def vr_id(self):
+ return self._vr_id
+
+ def adv_interval(self):
+ return self._intvl
+
+ def interface(self):
+ return self._intf
+
+ def assert_state_equals(self, state):
+ vr_details = self.query_vpp_config()
+ self._test.assertEqual(vr_details.runtime.state, state)
+
+ def master_down_seconds(self):
+ vr_details = self.query_vpp_config()
+ return (vr_details.runtime.master_down_int * 0.01)
+
+
+class TestVRRP4(VppTestCase):
+ """ IPv4 VRRP Test Case """
+
+ @classmethod
+ def setUpClass(cls):
+ super(TestVRRP4, cls).setUpClass()
+
+ @classmethod
+ def tearDownClass(cls):
+ super(TestVRRP4, cls).tearDownClass()
+
+ def setUp(self):
+ super(TestVRRP4, self).setUp()
+
+ self.create_pg_interfaces(range(2))
+
+ for i in self.pg_interfaces:
+ i.admin_up()
+ i.config_ip4()
+ i.generate_remote_hosts(5)
+ i.configure_ipv4_neighbors()
+
+ self._vrs = []
+ self._default_flags = VRRP_VR_FLAG_PREEMPT
+ self._default_adv = 100
+
+ def tearDown(self):
+ for vr in self._vrs:
+ try:
+ vr_api = vr.query_vpp_config()
+ if vr_api.runtime.state != VRRP_VR_STATE_INIT:
+ vr.start_stop(is_start=0)
+ vr.remove_vpp_config()
+ except:
+ self.logger.error("Error cleaning up")
+
+ for i in self.pg_interfaces:
+ i.admin_down()
+ i.unconfig_ip4()
+ i.unconfig_ip6()
+
+ self._vrs = []
+
+ super(TestVRRP4, self).tearDown()
+
+ def verify_vrrp4_igmp(self, pkt):
+ ip = pkt[IP]
+ self.assertEqual(ip.dst, "224.0.0.22")
+ self.assertEqual(ip.proto, 2)
+
+ igmp = pkt[IGMPv3]
+ self.assertEqual(IGMPv3.igmpv3types[igmp.type],
+ "Version 3 Membership Report")
+
+ igmpmr = pkt[IGMPv3mr]
+ self.assertEqual(igmpmr.numgrp, 1)
+ self.assertEqual(igmpmr.records[0].maddr, "224.0.0.18")
+
+ def verify_vrrp4_garp(self, pkt, vip, vmac):
+ arp = pkt[ARP]
+
+ # ARP "who-has" op == 1
+ self.assertEqual(arp.op, 1)
+ self.assertEqual(arp.pdst, arp.psrc)
+ self.assertEqual(arp.pdst, vip)
+ self.assertEqual(arp.hwsrc, vmac)
+
+ def verify_vrrp4_adv(self, rx_pkt, vr, prio=None):
+ vips = vr.virtual_ips()
+ eth = rx_pkt[Ether]
+ ip = rx_pkt[IP]
+ vrrp = rx_pkt[VRRPv3]
+
+ pkt = vr.vrrp_adv_packet(prio=prio)
+
+ # Source MAC is virtual MAC, destination is multicast MAC
+ self.assertEqual(eth.src, vr.virtual_mac())
+ self.assertEqual(eth.dst, vr.adv_dest_mac())
+
+ self.assertEqual(ip.dst, "224.0.0.18")
+ self.assertEqual(ip.ttl, 255)
+ self.assertEqual(ip.proto, IPPROTO_VRRP)
+
+ self.assertEqual(vrrp.version, 3)
+ self.assertEqual(vrrp.type, 1)
+ self.assertEqual(vrrp.vrid, vr.vr_id())
+ if prio is None:
+ prio = vr.priority()
+ self.assertEqual(vrrp.priority, prio)
+ self.assertEqual(vrrp.ipcount, len(vips))
+ self.assertEqual(vrrp.adv, vr.adv_interval())
+ self.assertListEqual(vrrp.addrlist, vips)
+
+ # VR with priority 255 owns the virtual address and should
+ # become master and start advertising immediately.
+ def test_vrrp4_master_adv(self):
+ """ IPv4 Master VR advertises """
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ prio = 255
+ intvl = self._default_adv
+ vr = VppVRRPVirtualRouter(self, self.pg0, 100,
+ prio=prio, intvl=intvl,
+ flags=self._default_flags)
+
+ vr.add_vpp_config()
+ vr.start_stop(is_start=1)
+ self.logger.info(self.vapi.cli("show vrrp vr"))
+ vr.start_stop(is_start=0)
+ self.logger.info(self.vapi.cli("show vrrp vr"))
+
+ pkts = self.pg0.get_capture(4)
+
+ # Init -> Master: IGMP Join, VRRP adv, gratuitous ARP are sent
+ self.verify_vrrp4_igmp(pkts[0])
+ self.verify_vrrp4_adv(pkts[1], vr, prio=prio)
+ self.verify_vrrp4_garp(pkts[2], vr.virtual_ips()[0], vr.virtual_mac())
+ # Master -> Init: Adv with priority 0 sent to force an election
+ self.verify_vrrp4_adv(pkts[3], vr, prio=0)
+
+ vr.remove_vpp_config()
+ self._vrs = []
+
+ # VR with priority < 255 enters backup state and does not advertise as
+ # long as it receives higher priority advertisements
+ def test_vrrp4_backup_noadv(self):
+ """ IPv4 Backup VR does not advertise """
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ vr_id = 100
+ prio = 100
+ intvl = self._default_adv
+ intvl_s = intvl * 0.01
+ vr = VppVRRPVirtualRouter(self, self.pg0, vr_id,
+ prio=prio, intvl=intvl,
+ flags=self._default_flags,
+ vips=[self.pg0.remote_ip4])
+ self._vrs.append(vr)
+ vr.add_vpp_config()
+
+ vr.start_stop(is_start=1)
+
+ vr.assert_state_equals(VRRP_VR_STATE_BACKUP)
+ # watch for advertisements for 2x the master down preemption timeout
+ end_time = vr.start_time() + 2 * vr.master_down_seconds()
+
+ # Init -> Backup: An IGMP join should be sent
+ pkts = self.pg0.get_capture(1)
+ self.verify_vrrp4_igmp(pkts[0])
+
+ # send higher prio advertisements, should not receive any
+ src_ip = self.pg0.remote_ip4
+ pkts = [vr.vrrp_adv_packet(prio=prio+10, src_ip=src_ip)]
+ while time.time() < end_time:
+ self.send_and_assert_no_replies(self.pg0, pkts, timeout=intvl_s)
+ self.logger.info(self.vapi.cli("show trace"))
+
+ vr.start_stop(is_start=0)
+ self.logger.info(self.vapi.cli("show vrrp vr"))
+ vr.remove_vpp_config()
+ self._vrs = []
+
+ def test_vrrp4_master_arp(self):
+ """ IPv4 Master VR replies to ARP """
+ self.pg_start()
+
+ # VR virtual IP is the default, which is the pg local IP
+ vr_id = 100
+ prio = 255
+ intvl = self._default_adv
+ vr = VppVRRPVirtualRouter(self, self.pg0, 100,
+ prio=prio, intvl=intvl,
+ flags=self._default_flags)
+ self._vrs.append(vr)
+
+ vr.add_vpp_config()
+
+ # before the VR is up, ARP should resolve to interface MAC
+ self.pg0.resolve_arp()
+ self.assertNotEqual(self.pg0.local_mac, vr.virtual_mac())
+
+ # start the VR, ARP should now resolve to virtual MAC
+ vr.start_stop(is_start=1)
+ self.pg0.resolve_arp()
+ self.assertEqual(self.pg0.local_mac, vr.virtual_mac())
+
+ # stop the VR, ARP should resolve to interface MAC again
+ vr.start_stop(is_start=0)
+ self.pg0.resolve_arp()
+ self.assertNotEqual(self.pg0.local_mac, vr.virtual_mac())
+
+ vr.remove_vpp_config()
+ self._vrs = []
+
+ def test_vrrp4_backup_noarp(self):
+ """ IPv4 Backup VR ignores ARP """
+ # We need an address for a virtual IP that is not the IP that
+ # ARP requests will originate from
+
+ vr_id = 100
+ prio = 100
+ intvl = self._default_adv
+ vip = self.pg0.remote_hosts[1].ip4
+ vr = VppVRRPVirtualRouter(self, self.pg0, vr_id,
+ prio=prio, intvl=intvl,
+ flags=self._default_flags,
+ vips=[vip])
+ self._vrs.append(vr)
+ vr.add_vpp_config()
+
+ arp_req = (Ether(dst="ff:ff:ff:ff:ff:ff", src=self.pg0.remote_mac) /
+ ARP(op=ARP.who_has, pdst=vip,
+ psrc=self.pg0.remote_ip4, hwsrc=self.pg0.remote_mac))
+
+ # Before the VR is started make sure no reply to request for VIP
+ self.pg_start()
+ self.pg_enable_capture(self.pg_interfaces)
+ self.send_and_assert_no_replies(self.pg0, [arp_req], timeout=1)
+
+ # VR should start in backup state and still should not reply to ARP
+ # send a higher priority adv to make sure it does not become master
+ adv = vr.vrrp_adv_packet(prio=prio+10, src_ip=self.pg0.remote_ip4)
+ vr.start_stop(is_start=1)
+ self.send_and_assert_no_replies(self.pg0, [adv, arp_req], timeout=1)
+
+ vr.start_stop(is_start=0)
+ vr.remove_vpp_config()
+ self._vrs = []
+
+ def test_vrrp4_election(self):
+ """ IPv4 Backup VR becomes master if no advertisements received """
+
+ vr_id = 100
+ prio = 100
+ intvl = self._default_adv
+ intvl_s = intvl * 0.01
+ vip = self.pg0.remote_ip4
+ vr = VppVRRPVirtualRouter(self, self.pg0, vr_id,
+ prio=prio, intvl=intvl,
+ flags=self._default_flags,
+ vips=[vip])
+ self._vrs.append(vr)
+ vr.add_vpp_config()
+
+ # After adding the VR, it should be in the init state
+ vr.assert_state_equals(VRRP_VR_STATE_INIT)
+
+ self.pg_start()
+ vr.start_stop(is_start=1)
+
+ # VR should be in backup state after starting
+ vr.assert_state_equals(VRRP_VR_STATE_BACKUP)
+ end_time = vr.start_time() + vr.master_down_seconds()
+
+ # should not receive adverts until timer expires & state transition
+ self.pg_enable_capture(self.pg_interfaces)
+ while (time.time() + intvl_s) < end_time:
+ time.sleep(intvl_s)
+ self.pg0.assert_nothing_captured(filter_out_fn=is_not_adv)
+
+ # VR should be in master state, should send an adv
+ self.pg0.enable_capture()
+ self.pg0.wait_for_packet(intvl_s, is_not_adv)
+ vr.assert_state_equals(VRRP_VR_STATE_MASTER)
+
+ def test_vrrp4_backup_preempts(self):
+ """ IPv4 Backup VR preempts lower priority master """
+
+ vr_id = 100
+ prio = 100
+ intvl = self._default_adv
+ intvl_s = intvl * 0.01
+ vip = self.pg0.remote_ip4
+ vr = VppVRRPVirtualRouter(self, self.pg0, vr_id,
+ prio=prio, intvl=intvl,
+ flags=self._default_flags,
+ vips=[vip])
+ self._vrs.append(vr)
+ vr.add_vpp_config()
+
+ # After adding the VR, it should be in the init state
+ vr.assert_state_equals(VRRP_VR_STATE_INIT)
+
+ self.pg_start()
+ vr.start_stop(is_start=1)
+
+ # VR should be in backup state after starting
+ vr.assert_state_equals(VRRP_VR_STATE_BACKUP)
+ end_time = vr.start_time() + vr.master_down_seconds()
+
+ # send lower prio advertisements until timer expires
+ src_ip = self.pg0.remote_ip4
+ pkts = [vr.vrrp_adv_packet(prio=prio-10, src_ip=src_ip)]
+ while time.time() + intvl_s < end_time:
+ self.send_and_assert_no_replies(self.pg0, pkts, timeout=intvl_s)
+ self.logger.info(self.vapi.cli("show trace"))
+
+ # when timer expires, VR should take over as master
+ self.pg0.enable_capture()
+ self.pg0.wait_for_packet(timeout=intvl_s, filter_out_fn=is_not_adv)
+ vr.assert_state_equals(VRRP_VR_STATE_MASTER)
+
+ def test_vrrp4_master_preempted(self):
+ """ IPv4 Master VR preempted by higher priority backup """
+
+ # A prio 255 VR cannot be preempted so the prio has to be lower and
+ # we have to wait for it to take over
+ vr_id = 100
+ prio = 100
+ intvl = self._default_adv
+ vip = self.pg0.remote_ip4
+ vr = VppVRRPVirtualRouter(self, self.pg0, vr_id,
+ prio=prio, intvl=intvl,
+ flags=self._default_flags,
+ vips=[vip])
+ self._vrs.append(vr)
+ vr.add_vpp_config()
+
+ # After adding the VR, it should be in the init state
+ vr.assert_state_equals(VRRP_VR_STATE_INIT)
+
+ # start VR
+ vr.start_stop(is_start=1)
+ vr.assert_state_equals(VRRP_VR_STATE_BACKUP)
+
+ # wait for VR to take over as master
+ end_time = vr.start_time() + vr.master_down_seconds()
+ sleep_s = end_time - time.time()
+ time.sleep(sleep_s)
+ vr.assert_state_equals(VRRP_VR_STATE_MASTER)
+
+ # Build advertisement packet and send it
+ pkts = [vr.vrrp_adv_packet(prio=255, src_ip=self.pg0.remote_ip4)]
+ self.pg_send(self.pg0, pkts)
+
+ # VR should be in backup state again
+ vr.assert_state_equals(VRRP_VR_STATE_BACKUP)
+
+ def test_vrrp4_accept_mode_disabled(self):
+ """ IPv4 Master VR does not reply for VIP w/ accept mode off """
+
+ # accept mode only matters when prio < 255, so it will have to
+ # come up as a backup and take over as master after the timeout
+ vr_id = 100
+ prio = 100
+ intvl = self._default_adv
+ vip = self.pg0.remote_hosts[4].ip4
+ vr = VppVRRPVirtualRouter(self, self.pg0, vr_id,
+ prio=prio, intvl=intvl,
+ flags=self._default_flags,
+ vips=[vip])
+ self._vrs.append(vr)
+ vr.add_vpp_config()
+
+ # After adding the VR, it should be in the init state
+ vr.assert_state_equals(VRRP_VR_STATE_INIT)
+
+ # start VR
+ vr.start_stop(is_start=1)
+ vr.assert_state_equals(VRRP_VR_STATE_BACKUP)
+
+ # wait for VR to take over as master
+ end_time = vr.start_time() + vr.master_down_seconds()
+ sleep_s = end_time - time.time()
+ time.sleep(sleep_s)
+ vr.assert_state_equals(VRRP_VR_STATE_MASTER)
+
+ # send an ICMP echo to the VR virtual IP address
+ echo = (Ether(dst=vr.virtual_mac(), src=self.pg0.remote_mac) /
+ IP(dst=vip, src=self.pg0.remote_ip4) /
+ ICMP(seq=1, id=self.pg0.sw_if_index, type='echo-request'))
+ self.pg_send(self.pg0, [echo])
+
+ # wait for an echo reply. none should be received
+ time.sleep(1)
+ self.pg0.assert_nothing_captured(filter_out_fn=is_not_echo_reply)
+
+ def test_vrrp4_accept_mode_enabled(self):
+ """ IPv4 Master VR replies for VIP w/ accept mode on """
+
+ # A prio 255 VR cannot be preempted so the prio has to be lower and
+ # we have to wait for it to take over
+ vr_id = 100
+ prio = 100
+ intvl = self._default_adv
+ vip = self.pg0.remote_hosts[4].ip4
+ flags = (VRRP_VR_FLAG_PREEMPT | VRRP_VR_FLAG_ACCEPT)
+ vr = VppVRRPVirtualRouter(self, self.pg0, vr_id,
+ prio=prio, intvl=intvl,
+ flags=flags,
+ vips=[vip])
+ self._vrs.append(vr)
+ vr.add_vpp_config()
+
+ # After adding the VR, it should be in the init state
+ vr.assert_state_equals(VRRP_VR_STATE_INIT)
+
+ # start VR
+ vr.start_stop(is_start=1)
+ vr.assert_state_equals(VRRP_VR_STATE_BACKUP)
+
+ # wait for VR to take over as master
+ end_time = vr.start_time() + vr.master_down_seconds()
+ sleep_s = end_time - time.time()
+ time.sleep(sleep_s)
+ vr.assert_state_equals(VRRP_VR_STATE_MASTER)
+
+ # send an ICMP echo to the VR virtual IP address
+ echo = (Ether(dst=vr.virtual_mac(), src=self.pg0.remote_mac) /
+ IP(dst=vip, src=self.pg0.remote_ip4) /
+ ICMP(seq=1, id=self.pg0.sw_if_index, type='echo-request'))
+ self.pg_send(self.pg0, [echo])
+
+ # wait for an echo reply.
+ time.sleep(1)
+ rx_pkts = self.pg0.get_capture(expected_count=1, timeout=1,
+ filter_out_fn=is_not_echo_reply)
+
+ self.assertEqual(rx_pkts[0][IP].src, vip)
+ self.assertEqual(rx_pkts[0][IP].dst, self.pg0.remote_ip4)
+ self.assertEqual(icmptypes[rx_pkts[0][ICMP].type], "echo-reply")
+ self.assertEqual(rx_pkts[0][ICMP].seq, 1)
+ self.assertEqual(rx_pkts[0][ICMP].id, self.pg0.sw_if_index)
+
+ def test_vrrp4_intf_tracking(self):
+ """ IPv4 Master VR adjusts priority based on tracked interface """
+
+ vr_id = 100
+ prio = 255
+ intvl = self._default_adv
+ intvl_s = intvl * 0.01
+ vip = self.pg0.local_ip4
+ vr = VppVRRPVirtualRouter(self, self.pg0, vr_id,
+ prio=prio, intvl=intvl,
+ flags=self._default_flags,
+ vips=[vip])
+ self._vrs.append(vr)
+ vr.add_vpp_config()
+
+ # After adding the VR, it should be in the init state
+ vr.assert_state_equals(VRRP_VR_STATE_INIT)
+
+ # add pg1 as a tracked interface and start the VR
+ adjustment = 50
+ adjusted_prio = prio - adjustment
+ vr.add_del_tracked_interface(is_add=1,
+ sw_if_index=self.pg1.sw_if_index,
+ prio=adjustment)
+ vr.start_stop(is_start=1)
+ vr.assert_state_equals(VRRP_VR_STATE_MASTER)
+
+ adv_configured = vr.vrrp_adv_packet(prio=prio)
+ adv_adjusted = vr.vrrp_adv_packet(prio=adjusted_prio)
+
+ # tracked intf is up -> advertised priority == configured priority
+ self.pg0.enable_capture()
+ rx = self.pg0.wait_for_packet(timeout=intvl_s,
+ filter_out_fn=is_not_adv)
+ self.assertEqual(rx, adv_configured)
+
+ # take down pg1, verify priority is now being adjusted
+ self.pg1.admin_down()
+ self.pg0.enable_capture()
+ rx = self.pg0.wait_for_packet(timeout=intvl_s,
+ filter_out_fn=is_not_adv)
+ self.assertEqual(rx, adv_adjusted)
+
+ # bring up pg1, verify priority now matches configured value
+ self.pg1.admin_up()
+ self.pg0.enable_capture()
+ rx = self.pg0.wait_for_packet(timeout=intvl_s,
+ filter_out_fn=is_not_adv)
+ self.assertEqual(rx, adv_configured)
+
+ # remove IP address from pg1, verify priority now being adjusted
+ self.pg1.unconfig_ip4()
+ self.pg0.enable_capture()
+ rx = self.pg0.wait_for_packet(timeout=intvl_s,
+ filter_out_fn=is_not_adv)
+ self.assertEqual(rx, adv_adjusted)
+
+ # add IP address to pg1, verify priority now matches configured value
+ self.pg1.config_ip4()
+ self.pg0.enable_capture()
+ rx = self.pg0.wait_for_packet(timeout=intvl_s,
+ filter_out_fn=is_not_adv)
+ self.assertEqual(rx, adv_configured)
+
+ def test_vrrp4_master_adv_unicast(self):
+ """ IPv4 Master VR advertises (unicast) """
+
+ vr_id = 100
+ prio = 255
+ intvl = self._default_adv
+ intvl_s = intvl * 0.01
+ vip = self.pg0.local_ip4
+ flags = (self._default_flags | VRRP_VR_FLAG_UNICAST)
+ unicast_peer = self.pg0.remote_hosts[4]
+ vr = VppVRRPVirtualRouter(self, self.pg0, vr_id,
+ prio=prio, intvl=intvl,
+ flags=flags,
+ vips=[vip])
+ self._vrs.append(vr)
+ vr.add_vpp_config()
+ vr.set_unicast_peers([unicast_peer.ip4])
+
+ # After adding the VR, it should be in the init state
+ vr.assert_state_equals(VRRP_VR_STATE_INIT)
+
+ # Start VR, transition to master
+ vr.start_stop(is_start=1)
+ vr.assert_state_equals(VRRP_VR_STATE_MASTER)
+
+ self.pg0.enable_capture()
+ rx = self.pg0.wait_for_packet(timeout=intvl_s,
+ filter_out_fn=is_not_adv)
+
+ self.assertTrue(rx.haslayer(Ether))
+ self.assertTrue(rx.haslayer(IP))
+ self.assertTrue(rx.haslayer(VRRPv3))
+ self.assertEqual(rx[Ether].src, self.pg0.local_mac)
+ self.assertEqual(rx[Ether].dst, unicast_peer.mac)
+ self.assertEqual(rx[IP].src, self.pg0.local_ip4)
+ self.assertEqual(rx[IP].dst, unicast_peer.ip4)
+ self.assertEqual(rx[VRRPv3].vrid, vr_id)
+ self.assertEqual(rx[VRRPv3].priority, prio)
+ self.assertEqual(rx[VRRPv3].ipcount, 1)
+ self.assertEqual(rx[VRRPv3].addrlist, [vip])
+
+
+class TestVRRP6(VppTestCase):
+ """ IPv6 VRRP Test Case """
+
+ @classmethod
+ def setUpClass(cls):
+ super(TestVRRP6, cls).setUpClass()
+
+ @classmethod
+ def tearDownClass(cls):
+ super(TestVRRP6, cls).tearDownClass()
+
+ def setUp(self):
+ super(TestVRRP6, self).setUp()
+
+ self.create_pg_interfaces(range(2))
+
+ for i in self.pg_interfaces:
+ i.admin_up()
+ i.config_ip6()
+ i.generate_remote_hosts(5)
+ i.configure_ipv6_neighbors()
+
+ self._vrs = []
+ self._default_flags = (VRRP_VR_FLAG_IPV6 | VRRP_VR_FLAG_PREEMPT)
+ self._default_adv = 100
+
+ def tearDown(self):
+ for vr in self._vrs:
+ try:
+ vr_api = vr.query_vpp_config()
+ if vr_api.runtime.state != VRRP_VR_STATE_INIT:
+ vr.start_stop(is_start=0)
+ vr.remove_vpp_config()
+ except:
+ self.logger.error("Error cleaning up")
+
+ for i in self.pg_interfaces:
+ i.admin_down()
+ i.unconfig_ip4()
+ i.unconfig_ip6()
+
+ self._vrs = []
+
+ super(TestVRRP6, self).tearDown()
+
+ def verify_vrrp6_mlr(self, pkt, vr):
+ ip6 = pkt[IPv6]
+ self.assertEqual(ip6.dst, "ff02::16")
+ self.assertEqual(ipv6nh[ip6.nh], "Hop-by-Hop Option Header")
+
+ hbh = pkt[IPv6ExtHdrHopByHop]
+ self.assertEqual(ipv6nh[hbh.nh], "ICMPv6")
+
+ self.assertTrue(pkt.haslayer(ICMPv6MLReport2))
+ mlr = pkt[ICMPv6MLReport2]
+ # should contain mc addr records for:
+ # - VRRPv3 multicast addr
+ # - solicited node mc addr record for each VR virtual IPv6 address
+ vips = vr.virtual_ips()
+ self.assertEqual(mlr.records_number, len(vips) + 1)
+ self.assertEqual(mlr.records[0].dst, vr.adv_dest_ip())
+
+ def verify_vrrp6_adv(self, rx_pkt, vr, prio=None):
+ self.assertTrue(rx_pkt.haslayer(Ether))
+ self.assertTrue(rx_pkt.haslayer(IPv6))
+ self.assertTrue(rx_pkt.haslayer(VRRPv3))
+
+ # generate a packet for this VR and compare it to the one received
+ pkt = vr.vrrp_adv_packet(prio=prio)
+ self.assertTrue(rx_pkt.haslayer(Ether))
+ self.assertTrue(rx_pkt.haslayer(IPv6))
+ self.assertTrue(rx_pkt.haslayer(VRRPv3))
+
+ self.assertEqual(pkt, rx_pkt)
+
+ def verify_vrrp6_gna(self, pkt, vr):
+ self.assertTrue(pkt.haslayer(Ether))
+ self.assertTrue(pkt.haslayer(IPv6))
+ self.assertTrue(pkt.haslayer(ICMPv6ND_NA))
+ self.assertTrue(pkt.haslayer(ICMPv6NDOptDstLLAddr))
+
+ self.assertEqual(pkt[Ether].dst, "33:33:00:00:00:01")
+
+ self.assertEqual(pkt[IPv6].dst, "ff02::1")
+ # convert addrs to packed format since string versions could differ
+ src_addr = inet_pton(AF_INET6, pkt[IPv6].src)
+ vr_ll_addr = inet_pton(AF_INET6, vr.interface().local_ip6_ll)
+ self.assertEqual(src_addr, vr_ll_addr)
+
+ self.assertTrue(pkt[ICMPv6ND_NA].tgt in vr.virtual_ips())
+ self.assertEqual(pkt[ICMPv6NDOptDstLLAddr].lladdr, vr.virtual_mac())
+
+ # VR with priority 255 owns the virtual address and should
+ # become master and start advertising immediately.
+ def test_vrrp6_master_adv(self):
+ """ IPv6 Master VR advertises """
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ prio = 255
+ intvl = self._default_adv
+ vr = VppVRRPVirtualRouter(self, self.pg0, 100,
+ prio=prio, intvl=intvl,
+ flags=self._default_flags)
+ self._vrs.append(vr)
+
+ vr.add_vpp_config()
+ self.logger.info(self.vapi.cli("show vrrp vr"))
+ vr.start_stop(is_start=1)
+ self.logger.info(self.vapi.cli("show vrrp vr"))
+ vr.start_stop(is_start=0)
+ self.logger.info(self.vapi.cli("show vrrp vr"))
+
+ pkts = self.pg0.get_capture(4, filter_out_fn=None)
+
+ # Init -> Master: Multicast group Join, VRRP adv, gratuitous NAs sent
+ self.verify_vrrp6_mlr(pkts[0], vr)
+ self.verify_vrrp6_adv(pkts[1], vr, prio=prio)
+ self.verify_vrrp6_gna(pkts[2], vr)
+ # Master -> Init: Adv with priority 0 sent to force an election
+ self.verify_vrrp6_adv(pkts[3], vr, prio=0)
+
+ vr.remove_vpp_config()
+ self._vrs = []
+
+ # VR with priority < 255 enters backup state and does not advertise as
+ # long as it receives higher priority advertisements
+ def test_vrrp6_backup_noadv(self):
+ """ IPv6 Backup VR does not advertise """
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ vr_id = 100
+ prio = 100
+ intvl = self._default_adv
+ intvl_s = intvl * 0.01
+ vr = VppVRRPVirtualRouter(self, self.pg0, vr_id,
+ prio=prio, intvl=intvl,
+ flags=self._default_flags,
+ vips=[self.pg0.remote_ip6])
+ vr.add_vpp_config()
+ self._vrs.append(vr)
+
+ vr.start_stop(is_start=1)
+
+ vr.assert_state_equals(VRRP_VR_STATE_BACKUP)
+ # watch for advertisements for 2x the master down preemption timeout
+ end_time = vr.start_time() + 2 * vr.master_down_seconds()
+
+ # Init -> Backup: A multicast listener report should be sent
+ pkts = self.pg0.get_capture(1, filter_out_fn=None)
+
+ # send higher prio advertisements, should not see VPP send any
+ src_ip = self.pg0.remote_ip6_ll
+ num_advs = 5
+ pkts = [vr.vrrp_adv_packet(prio=prio+10, src_ip=src_ip)]
+ self.logger.info(self.vapi.cli("show vlib graph"))
+ while time.time() < end_time:
+ self.send_and_assert_no_replies(self.pg0, pkts, timeout=intvl_s)
+ self.logger.info(self.vapi.cli("show trace"))
+ num_advs -= 1
+
+ vr.start_stop(is_start=0)
+ self.logger.info(self.vapi.cli("show vrrp vr"))
+ vr.remove_vpp_config()
+ self._vrs = []
+
+ def test_vrrp6_master_nd(self):
+ """ IPv6 Master VR replies to NDP """
+ self.pg_start()
+
+ # VR virtual IP is the default, which is the pg local IP
+ vr_id = 100
+ prio = 255
+ intvl = self._default_adv
+ vr = VppVRRPVirtualRouter(self, self.pg0, 100,
+ prio=prio, intvl=intvl,
+ flags=self._default_flags)
+ vr.add_vpp_config()
+ self._vrs.append(vr)
+
+ # before the VR is up, NDP should resolve to interface MAC
+ self.pg0.resolve_ndp()
+ self.assertNotEqual(self.pg0.local_mac, vr.virtual_mac())
+
+ # start the VR, NDP should now resolve to virtual MAC
+ vr.start_stop(is_start=1)
+ self.pg0.resolve_ndp()
+ self.assertEqual(self.pg0.local_mac, vr.virtual_mac())
+
+ # stop the VR, ARP should resolve to interface MAC again
+ vr.start_stop(is_start=0)
+ self.pg0.resolve_ndp()
+ self.assertNotEqual(self.pg0.local_mac, vr.virtual_mac())
+
+ vr.remove_vpp_config()
+ self._vrs = []
+
+ def test_vrrp6_backup_nond(self):
+ """ IPv6 Backup VR ignores NDP """
+ # We need an address for a virtual IP that is not the IP that
+ # ARP requests will originate from
+
+ vr_id = 100
+ prio = 100
+ intvl = self._default_adv
+ intvl_s = intvl * 0.01
+ vip = self.pg0.remote_hosts[1].ip6
+ vr = VppVRRPVirtualRouter(self, self.pg0, vr_id,
+ prio=prio, intvl=intvl,
+ flags=self._default_flags,
+ vips=[vip])
+ vr.add_vpp_config()
+ self._vrs.append(vr)
+
+ nsma = in6_getnsma(inet_pton(socket.AF_INET6, vip))
+ dmac = in6_getnsmac(nsma)
+ dst_ip = inet_ntop(socket.AF_INET6, nsma)
+
+ ndp_req = (Ether(dst=dmac, src=self.pg0.remote_mac) /
+ IPv6(dst=dst_ip, src=self.pg0.remote_ip6) /
+ ICMPv6ND_NS(tgt=vip) /
+ ICMPv6NDOptSrcLLAddr(lladdr=self.pg0.remote_mac))
+
+ # Before the VR is started make sure no reply to request for VIP
+ self.send_and_assert_no_replies(self.pg0, [ndp_req], timeout=1)
+
+ # VR should start in backup state and still should not reply to NDP
+ # send a higher priority adv to make sure it does not become master
+ adv = vr.vrrp_adv_packet(prio=prio+10, src_ip=self.pg0.remote_ip6)
+ pkts = [adv, ndp_req]
+ vr.start_stop(is_start=1)
+ self.send_and_assert_no_replies(self.pg0, pkts, timeout=intvl_s)
+
+ vr.start_stop(is_start=0)
+
+ def test_vrrp6_election(self):
+ """ IPv6 Backup VR becomes master if no advertisements received """
+
+ vr_id = 100
+ prio = 100
+ intvl = self._default_adv
+ intvl_s = intvl * 0.01
+ vip = self.pg0.remote_ip6
+ vr = VppVRRPVirtualRouter(self, self.pg0, vr_id,
+ prio=prio, intvl=intvl,
+ flags=self._default_flags,
+ vips=[vip])
+ self._vrs.append(vr)
+ vr.add_vpp_config()
+
+ # After adding the VR, it should be in the init state
+ vr.assert_state_equals(VRRP_VR_STATE_INIT)
+
+ self.pg_start()
+ vr.start_stop(is_start=1)
+
+ # VR should be in backup state after starting
+ vr.assert_state_equals(VRRP_VR_STATE_BACKUP)
+ end_time = vr.start_time() + vr.master_down_seconds()
+
+ # no advertisements should arrive until timer expires
+ self.pg0.enable_capture()
+ while (time.time() + intvl_s) < end_time:
+ time.sleep(intvl_s)
+ self.pg0.assert_nothing_captured(filter_out_fn=is_not_adv)
+
+ # VR should be in master state after timer expires
+ self.pg0.enable_capture()
+ self.pg0.wait_for_packet(intvl_s, is_not_adv)
+ vr.assert_state_equals(VRRP_VR_STATE_MASTER)
+
+ def test_vrrp6_backup_preempts(self):
+ """ IPv6 Backup VR preempts lower priority master """
+
+ vr_id = 100
+ prio = 100
+ intvl = self._default_adv
+ intvl_s = intvl * 0.01
+ vip = self.pg0.remote_ip6
+ vr = VppVRRPVirtualRouter(self, self.pg0, vr_id,
+ prio=prio, intvl=intvl,
+ flags=self._default_flags,
+ vips=[vip])
+ self._vrs.append(vr)
+ vr.add_vpp_config()
+
+ # After adding the VR, it should be in the init state
+ vr.assert_state_equals(VRRP_VR_STATE_INIT)
+
+ self.pg_start()
+ vr.start_stop(is_start=1)
+
+ # VR should be in backup state after starting
+ vr.assert_state_equals(VRRP_VR_STATE_BACKUP)
+ end_time = vr.start_time() + vr.master_down_seconds()
+
+ # send lower prio advertisements until timer expires
+ src_ip = self.pg0.remote_ip6
+ pkts = [vr.vrrp_adv_packet(prio=prio-10, src_ip=src_ip)]
+ while (time.time() + intvl_s) < end_time:
+ self.send_and_assert_no_replies(self.pg0, pkts, timeout=intvl_s)
+ self.logger.info(self.vapi.cli("show trace"))
+
+ # when timer expires, VR should take over as master
+ self.pg0.enable_capture()
+ self.pg0.wait_for_packet(timeout=intvl_s, filter_out_fn=is_not_adv)
+ vr.assert_state_equals(VRRP_VR_STATE_MASTER)
+
+ def test_vrrp6_master_preempted(self):
+ """ IPv6 Master VR preempted by higher priority backup """
+
+ # A prio 255 VR cannot be preempted so the prio has to be lower and
+ # we have to wait for it to take over
+ vr_id = 100
+ prio = 100
+ intvl = self._default_adv
+ vip = self.pg0.remote_ip6
+ vr = VppVRRPVirtualRouter(self, self.pg0, vr_id,
+ prio=prio, intvl=intvl,
+ flags=self._default_flags,
+ vips=[vip])
+ self._vrs.append(vr)
+ vr.add_vpp_config()
+
+ # After adding the VR, it should be in the init state
+ vr.assert_state_equals(VRRP_VR_STATE_INIT)
+
+ # start VR
+ vr.start_stop(is_start=1)
+ vr.assert_state_equals(VRRP_VR_STATE_BACKUP)
+
+ # wait for VR to take over as master
+ end_time = vr.start_time() + vr.master_down_seconds()
+ sleep_s = end_time - time.time()
+ time.sleep(sleep_s)
+ vr.assert_state_equals(VRRP_VR_STATE_MASTER)
+
+ # Build advertisement packet and send it
+ pkts = [vr.vrrp_adv_packet(prio=255, src_ip=self.pg0.remote_ip6)]
+ self.pg_send(self.pg0, pkts)
+
+ # VR should be in backup state again
+ vr.assert_state_equals(VRRP_VR_STATE_BACKUP)
+
+ def test_vrrp6_accept_mode_disabled(self):
+ """ IPv6 Master VR does not reply for VIP w/ accept mode off """
+
+ # accept mode only matters when prio < 255, so it will have to
+ # come up as a backup and take over as master after the timeout
+ vr_id = 100
+ prio = 100
+ intvl = self._default_adv
+ vip = self.pg0.remote_hosts[4].ip6
+ vr = VppVRRPVirtualRouter(self, self.pg0, vr_id,
+ prio=prio, intvl=intvl,
+ flags=self._default_flags,
+ vips=[vip])
+ self._vrs.append(vr)
+ vr.add_vpp_config()
+
+ # After adding the VR, it should be in the init state
+ vr.assert_state_equals(VRRP_VR_STATE_INIT)
+
+ # start VR
+ vr.start_stop(is_start=1)
+ vr.assert_state_equals(VRRP_VR_STATE_BACKUP)
+
+ # wait for VR to take over as master
+ end_time = vr.start_time() + vr.master_down_seconds()
+ sleep_s = end_time - time.time()
+ time.sleep(sleep_s)
+ vr.assert_state_equals(VRRP_VR_STATE_MASTER)
+
+ # send an ICMPv6 echo to the VR virtual IP address
+ echo = (Ether(dst=vr.virtual_mac(), src=self.pg0.remote_mac) /
+ IPv6(dst=vip, src=self.pg0.remote_ip6) /
+ ICMPv6EchoRequest(seq=1, id=self.pg0.sw_if_index))
+ self.pg_send(self.pg0, [echo])
+
+ # wait for an echo reply. none should be received
+ time.sleep(1)
+ self.pg0.assert_nothing_captured(filter_out_fn=is_not_echo_reply)
+
+ def test_vrrp6_accept_mode_enabled(self):
+ """ IPv6 Master VR replies for VIP w/ accept mode on """
+
+ # A prio 255 VR cannot be preempted so the prio has to be lower and
+ # we have to wait for it to take over
+ vr_id = 100
+ prio = 100
+ intvl = self._default_adv
+ vip = self.pg0.remote_hosts[4].ip6
+ flags = (self._default_flags | VRRP_VR_FLAG_ACCEPT)
+ vr = VppVRRPVirtualRouter(self, self.pg0, vr_id,
+ prio=prio, intvl=intvl,
+ flags=flags,
+ vips=[vip])
+ self._vrs.append(vr)
+ vr.add_vpp_config()
+
+ # After adding the VR, it should be in the init state
+ vr.assert_state_equals(VRRP_VR_STATE_INIT)
+
+ # start VR
+ vr.start_stop(is_start=1)
+ vr.assert_state_equals(VRRP_VR_STATE_BACKUP)
+
+ # wait for VR to take over as master
+ end_time = vr.start_time() + vr.master_down_seconds()
+ sleep_s = end_time - time.time()
+ time.sleep(sleep_s)
+ vr.assert_state_equals(VRRP_VR_STATE_MASTER)
+
+ # send an ICMP echo to the VR virtual IP address
+ echo = (Ether(dst=vr.virtual_mac(), src=self.pg0.remote_mac) /
+ IPv6(dst=vip, src=self.pg0.remote_ip6) /
+ ICMPv6EchoRequest(seq=1, id=self.pg0.sw_if_index))
+ self.pg_send(self.pg0, [echo])
+
+ # wait for an echo reply.
+ time.sleep(1)
+ rx_pkts = self.pg0.get_capture(expected_count=1, timeout=1,
+ filter_out_fn=is_not_echo_reply)
+
+ self.assertEqual(rx_pkts[0][IPv6].src, vip)
+ self.assertEqual(rx_pkts[0][IPv6].dst, self.pg0.remote_ip6)
+ self.assertEqual(rx_pkts[0][ICMPv6EchoReply].seq, 1)
+ self.assertEqual(rx_pkts[0][ICMPv6EchoReply].id, self.pg0.sw_if_index)
+
+ def test_vrrp6_intf_tracking(self):
+ """ IPv6 Master VR adjusts priority based on tracked interface """
+
+ vr_id = 100
+ prio = 255
+ intvl = self._default_adv
+ intvl_s = intvl * 0.01
+ vip = self.pg0.local_ip6
+ vr = VppVRRPVirtualRouter(self, self.pg0, vr_id,
+ prio=prio, intvl=intvl,
+ flags=self._default_flags,
+ vips=[vip])
+ self._vrs.append(vr)
+ vr.add_vpp_config()
+
+ # After adding the VR, it should be in the init state
+ vr.assert_state_equals(VRRP_VR_STATE_INIT)
+
+ # add pg1 as a tracked interface and start the VR
+ adjustment = 50
+ adjusted_prio = prio - adjustment
+ vr.add_del_tracked_interface(is_add=1,
+ sw_if_index=self.pg1.sw_if_index,
+ prio=adjustment)
+ vr.start_stop(is_start=1)
+ vr.assert_state_equals(VRRP_VR_STATE_MASTER)
+
+ adv_configured = vr.vrrp_adv_packet(prio=prio)
+ adv_adjusted = vr.vrrp_adv_packet(prio=adjusted_prio)
+
+ # tracked intf is up -> advertised priority == configured priority
+ self.pg0.enable_capture()
+ rx = self.pg0.wait_for_packet(timeout=intvl_s,
+ filter_out_fn=is_not_adv)
+ self.assertEqual(rx, adv_configured)
+
+ # take down pg1, verify priority is now being adjusted
+ self.pg1.admin_down()
+ self.pg0.enable_capture()
+ rx = self.pg0.wait_for_packet(timeout=intvl_s,
+ filter_out_fn=is_not_adv)
+ self.assertEqual(rx, adv_adjusted)
+
+ # bring up pg1, verify priority now matches configured value
+ self.pg1.admin_up()
+ self.pg0.enable_capture()
+ rx = self.pg0.wait_for_packet(timeout=intvl_s,
+ filter_out_fn=is_not_adv)
+ self.assertEqual(rx, adv_configured)
+
+ # remove IP address from pg1, verify priority now being adjusted
+ self.pg1.unconfig_ip6()
+ self.pg0.enable_capture()
+ rx = self.pg0.wait_for_packet(timeout=intvl_s,
+ filter_out_fn=is_not_adv)
+ self.assertEqual(rx, adv_adjusted)
+
+ # add IP address to pg1, verify priority now matches configured value
+ self.pg1.config_ip6()
+ self.pg0.enable_capture()
+ rx = self.pg0.wait_for_packet(timeout=intvl_s,
+ filter_out_fn=is_not_adv)
+ self.assertEqual(rx, adv_configured)
+
+ def test_vrrp6_master_adv_unicast(self):
+ """ IPv6 Master VR advertises (unicast) """
+
+ vr_id = 100
+ prio = 255
+ intvl = self._default_adv
+ intvl_s = intvl * 0.01
+ vip = self.pg0.local_ip6
+ flags = (self._default_flags | VRRP_VR_FLAG_UNICAST)
+ unicast_peer = self.pg0.remote_hosts[4]
+ vr = VppVRRPVirtualRouter(self, self.pg0, vr_id,
+ prio=prio, intvl=intvl,
+ flags=flags,
+ vips=[vip])
+ self._vrs.append(vr)
+ vr.add_vpp_config()
+ vr.set_unicast_peers([unicast_peer.ip6])
+
+ # After adding the VR, it should be in the init state
+ vr.assert_state_equals(VRRP_VR_STATE_INIT)
+
+ # Start VR, transition to master
+ vr.start_stop(is_start=1)
+ vr.assert_state_equals(VRRP_VR_STATE_MASTER)
+
+ self.pg0.enable_capture()
+ rx = self.pg0.wait_for_packet(timeout=intvl_s,
+ filter_out_fn=is_not_adv)
+
+ self.assertTrue(rx.haslayer(Ether))
+ self.assertTrue(rx.haslayer(IPv6))
+ self.assertTrue(rx.haslayer(VRRPv3))
+ self.assertEqual(rx[Ether].src, self.pg0.local_mac)
+ self.assertEqual(rx[Ether].dst, unicast_peer.mac)
+ self.assertEqual(ip6_normalize(rx[IPv6].src),
+ ip6_normalize(self.pg0.local_ip6_ll))
+ self.assertEqual(ip6_normalize(rx[IPv6].dst),
+ ip6_normalize(unicast_peer.ip6))
+ self.assertEqual(rx[VRRPv3].vrid, vr_id)
+ self.assertEqual(rx[VRRPv3].priority, prio)
+ self.assertEqual(rx[VRRPv3].ipcount, 1)
+ self.assertEqual(rx[VRRPv3].addrlist, [vip])
+
+
+if __name__ == '__main__':
+ unittest.main(testRunner=VppTestRunner)
Code Review / vpp.git / blobdiff