bc764c8bc2
Type: refactor Change-Id: I492b6e88acadf0ab0e4d7b1c0c5d1cab84c1726f Signed-off-by: Neale Ranns <nranns@cisco.com>
501 lines
18 KiB
Python
501 lines
18 KiB
Python
#!/usr/bin/env python
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""" L2BD ARP term Test """
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import unittest
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import random
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import copy
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from socket import AF_INET, AF_INET6
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from scapy.packet import Raw
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from scapy.layers.l2 import Ether, ARP
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from scapy.layers.inet import IP
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from scapy.utils import inet_pton, inet_ntop
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from scapy.utils6 import in6_getnsma, in6_getnsmac, in6_ptop, in6_islladdr, \
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in6_mactoifaceid, in6_ismaddr
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from scapy.layers.inet6 import IPv6, UDP, ICMPv6ND_NS, ICMPv6ND_RS, \
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ICMPv6ND_RA, ICMPv6NDOptSrcLLAddr, getmacbyip6, ICMPv6MRD_Solicitation, \
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ICMPv6NDOptMTU, ICMPv6NDOptSrcLLAddr, ICMPv6NDOptPrefixInfo, \
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ICMPv6ND_NA, ICMPv6NDOptDstLLAddr, ICMPv6DestUnreach, icmp6types
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from framework import VppTestCase, VppTestRunner
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from util import Host, ppp
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class TestL2bdArpTerm(VppTestCase):
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""" L2BD arp termination Test Case """
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@classmethod
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def setUpClass(cls):
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"""
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Perform standard class setup (defined by class method setUpClass in
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class VppTestCase) before running the test case, set test case related
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variables and configure VPP.
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"""
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super(TestL2bdArpTerm, cls).setUpClass()
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try:
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# Create pg interfaces
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n_bd = 1
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cls.ifs_per_bd = ifs_per_bd = 3
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n_ifs = n_bd * ifs_per_bd
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cls.create_pg_interfaces(range(n_ifs))
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# Set up all interfaces
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for i in cls.pg_interfaces:
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i.admin_up()
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cls.hosts = set()
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except Exception:
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super(TestL2bdArpTerm, cls).tearDownClass()
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raise
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@classmethod
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def tearDownClass(cls):
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super(TestL2bdArpTerm, cls).tearDownClass()
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def setUp(self):
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"""
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Clear trace and packet infos before running each test.
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"""
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self.reset_packet_infos()
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super(TestL2bdArpTerm, self).setUp()
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def tearDown(self):
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"""
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Show various debug prints after each test.
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"""
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super(TestL2bdArpTerm, self).tearDown()
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def show_commands_at_teardown(self):
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self.logger.info(self.vapi.ppcli("show l2fib verbose"))
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# many tests delete bridge-domain 1 as the last task. don't output
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# the details of a non-existent bridge-domain.
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if self.vapi.l2_fib_table_dump(bd_id=1):
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self.logger.info(self.vapi.ppcli("show bridge-domain 1 detail"))
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def add_del_arp_term_hosts(self, entries, bd_id=1, is_add=1, is_ipv6=0):
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for e in entries:
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ip = e.ip4 if is_ipv6 == 0 else e.ip6
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self.vapi.bd_ip_mac_add_del(is_add=is_add,
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entry={
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'bd_id': bd_id,
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'ip': ip,
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'mac': e.mac})
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@classmethod
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def mac_list(cls, b6_range):
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return ["00:00:ca:fe:00:%02x" % b6 for b6 in b6_range]
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@classmethod
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def ip4_host(cls, subnet, host, mac):
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return Host(mac=mac,
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ip4="172.17.1%02u.%u" % (subnet, host))
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@classmethod
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def ip4_hosts(cls, subnet, start, mac_list):
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return {cls.ip4_host(subnet, start + j, mac_list[j])
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for j in range(len(mac_list))}
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@classmethod
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def ip6_host(cls, subnet, host, mac):
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return Host(mac=mac,
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ip6="fd01:%x::%x" % (subnet, host))
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@classmethod
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def ip6_hosts(cls, subnet, start, mac_list):
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return {cls.ip6_host(subnet, start + j, mac_list[j])
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for j in range(len(mac_list))}
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@classmethod
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def bd_swifs(cls, b):
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n = cls.ifs_per_bd
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start = (b - 1) * n
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return [cls.pg_interfaces[j] for j in range(start, start + n)]
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def bd_add_del(self, bd_id=1, is_add=1):
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if is_add:
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self.vapi.bridge_domain_add_del(bd_id=bd_id, is_add=is_add)
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for swif in self.bd_swifs(bd_id):
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swif_idx = swif.sw_if_index
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self.vapi.sw_interface_set_l2_bridge(rx_sw_if_index=swif_idx,
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bd_id=bd_id, enable=is_add)
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if not is_add:
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self.vapi.bridge_domain_add_del(bd_id=bd_id, is_add=is_add)
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@classmethod
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def arp_req(cls, src_host, host):
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return (Ether(dst="ff:ff:ff:ff:ff:ff", src=src_host.mac) /
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ARP(op="who-has",
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hwsrc=src_host.bin_mac,
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pdst=host.ip4,
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psrc=src_host.ip4))
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@classmethod
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def arp_reqs(cls, src_host, entries):
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return [cls.arp_req(src_host, e) for e in entries]
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@classmethod
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def garp_req(cls, host):
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return cls.arp_req(host, host)
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@classmethod
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def garp_reqs(cls, entries):
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return [cls.garp_req(e) for e in entries]
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def arp_resp_host(self, src_host, arp_resp):
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ether = arp_resp[Ether]
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self.assertEqual(ether.dst, src_host.mac)
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arp = arp_resp[ARP]
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self.assertEqual(arp.hwtype, 1)
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self.assertEqual(arp.ptype, 0x800)
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self.assertEqual(arp.hwlen, 6)
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self.assertEqual(arp.plen, 4)
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arp_opts = {"who-has": 1, "is-at": 2}
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self.assertEqual(arp.op, arp_opts["is-at"])
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self.assertEqual(arp.hwdst, src_host.mac)
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self.assertEqual(arp.pdst, src_host.ip4)
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return Host(mac=arp.hwsrc, ip4=arp.psrc)
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def arp_resp_hosts(self, src_host, pkts):
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return {self.arp_resp_host(src_host, p) for p in pkts}
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@staticmethod
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def inttoip4(ip):
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o1 = int(ip / 16777216) % 256
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o2 = int(ip / 65536) % 256
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o3 = int(ip / 256) % 256
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o4 = int(ip) % 256
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return '%s.%s.%s.%s' % (o1, o2, o3, o4)
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def arp_event_host(self, e):
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return Host(str(e.mac), ip4=str(e.ip))
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def arp_event_hosts(self, evs):
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return {self.arp_event_host(e) for e in evs}
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def nd_event_host(self, e):
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return Host(str(e.mac), ip6=str(e.ip))
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def nd_event_hosts(self, evs):
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return {self.nd_event_host(e) for e in evs}
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@classmethod
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def ns_req(cls, src_host, host):
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nsma = in6_getnsma(inet_pton(AF_INET6, "fd10::ffff"))
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d = inet_ntop(AF_INET6, nsma)
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return (Ether(dst="ff:ff:ff:ff:ff:ff", src=src_host.mac) /
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IPv6(dst=d, src=src_host.ip6) /
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ICMPv6ND_NS(tgt=host.ip6) /
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ICMPv6NDOptSrcLLAddr(lladdr=src_host.mac))
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@classmethod
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def ns_reqs_dst(cls, entries, dst_host):
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return [cls.ns_req(e, dst_host) for e in entries]
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@classmethod
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def ns_reqs_src(cls, src_host, entries):
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return [cls.ns_req(src_host, e) for e in entries]
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def na_resp_host(self, src_host, rx):
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self.assertEqual(rx[Ether].dst, src_host.mac)
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self.assertEqual(in6_ptop(rx[IPv6].dst),
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in6_ptop(src_host.ip6))
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self.assertTrue(rx.haslayer(ICMPv6ND_NA))
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self.assertTrue(rx.haslayer(ICMPv6NDOptDstLLAddr))
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na = rx[ICMPv6ND_NA]
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return Host(mac=na.lladdr, ip6=na.tgt)
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def na_resp_hosts(self, src_host, pkts):
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return {self.na_resp_host(src_host, p) for p in pkts}
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def set_bd_flags(self, bd_id, **args):
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"""
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Enable/disable defined feature(s) of the bridge domain.
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:param int bd_id: Bridge domain ID.
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:param list args: List of feature/status pairs. Allowed features: \
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learn, forward, flood, uu_flood and arp_term. Status False means \
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disable, status True means enable the feature.
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:raise: ValueError in case of unknown feature in the input.
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"""
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for flag in args:
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if flag == "learn":
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feature_bitmap = 1 << 0
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elif flag == "forward":
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feature_bitmap = 1 << 1
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elif flag == "flood":
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feature_bitmap = 1 << 2
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elif flag == "uu_flood":
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feature_bitmap = 1 << 3
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elif flag == "arp_term":
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feature_bitmap = 1 << 4
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else:
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raise ValueError("Unknown feature used: %s" % flag)
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is_set = 1 if args[flag] else 0
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self.vapi.bridge_flags(bd_id=bd_id, is_set=is_set,
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flags=feature_bitmap)
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self.logger.info("Bridge domain ID %d updated" % bd_id)
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def verify_arp(self, src_host, req_hosts, resp_hosts, bd_id=1):
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reqs = self.arp_reqs(src_host, req_hosts)
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for swif in self.bd_swifs(bd_id):
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swif.add_stream(reqs)
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self.pg_enable_capture(self.pg_interfaces)
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self.pg_start()
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for swif in self.bd_swifs(bd_id):
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resp_pkts = swif.get_capture(len(resp_hosts))
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resps = self.arp_resp_hosts(src_host, resp_pkts)
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self.assertEqual(len(resps ^ resp_hosts), 0)
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def verify_nd(self, src_host, req_hosts, resp_hosts, bd_id=1):
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reqs = self.ns_reqs_src(src_host, req_hosts)
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for swif in self.bd_swifs(bd_id):
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swif.add_stream(reqs)
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self.pg_enable_capture(self.pg_interfaces)
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self.pg_start()
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for swif in self.bd_swifs(bd_id):
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resp_pkts = swif.get_capture(len(resp_hosts))
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resps = self.na_resp_hosts(src_host, resp_pkts)
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self.assertEqual(len(resps ^ resp_hosts), 0)
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def test_l2bd_arp_term_01(self):
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""" L2BD arp term - add 5 hosts, verify arp responses
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"""
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src_host = self.ip4_host(50, 50, "00:00:11:22:33:44")
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self.bd_add_del(1, is_add=1)
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self.set_bd_flags(1, arp_term=True, flood=False,
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uu_flood=False, learn=False)
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macs = self.mac_list(range(1, 5))
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hosts = self.ip4_hosts(4, 1, macs)
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self.add_del_arp_term_hosts(hosts, is_add=1)
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self.verify_arp(src_host, hosts, hosts)
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type(self).hosts = hosts
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def test_l2bd_arp_term_02(self):
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""" L2BD arp term - delete 3 hosts, verify arp responses
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"""
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src_host = self.ip4_host(50, 50, "00:00:11:22:33:44")
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macs = self.mac_list(range(1, 3))
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deleted = self.ip4_hosts(4, 1, macs)
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self.add_del_arp_term_hosts(deleted, is_add=0)
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remaining = self.hosts - deleted
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self.verify_arp(src_host, self.hosts, remaining)
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type(self).hosts = remaining
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self.bd_add_del(1, is_add=0)
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def test_l2bd_arp_term_03(self):
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""" L2BD arp term - recreate BD1, readd 3 hosts, verify arp responses
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"""
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src_host = self.ip4_host(50, 50, "00:00:11:22:33:44")
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self.bd_add_del(1, is_add=1)
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self.set_bd_flags(1, arp_term=True, flood=False,
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uu_flood=False, learn=False)
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macs = self.mac_list(range(1, 3))
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readded = self.ip4_hosts(4, 1, macs)
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self.add_del_arp_term_hosts(readded, is_add=1)
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self.verify_arp(src_host, self.hosts | readded, readded)
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type(self).hosts = readded
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def test_l2bd_arp_term_04(self):
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""" L2BD arp term - 2 IP4 addrs per host
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"""
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src_host = self.ip4_host(50, 50, "00:00:11:22:33:44")
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macs = self.mac_list(range(1, 3))
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sub5_hosts = self.ip4_hosts(5, 1, macs)
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self.add_del_arp_term_hosts(sub5_hosts, is_add=1)
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hosts = self.hosts | sub5_hosts
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self.verify_arp(src_host, hosts, hosts)
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type(self).hosts = hosts
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self.bd_add_del(1, is_add=0)
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def test_l2bd_arp_term_05(self):
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""" L2BD arp term - create and update 10 IP4-mac pairs
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"""
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src_host = self.ip4_host(50, 50, "00:00:11:22:33:44")
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self.bd_add_del(1, is_add=1)
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self.set_bd_flags(1, arp_term=True, flood=False,
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uu_flood=False, learn=False)
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macs1 = self.mac_list(range(10, 20))
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hosts1 = self.ip4_hosts(5, 1, macs1)
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self.add_del_arp_term_hosts(hosts1, is_add=1)
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self.verify_arp(src_host, hosts1, hosts1)
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macs2 = self.mac_list(range(20, 30))
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hosts2 = self.ip4_hosts(5, 1, macs2)
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self.add_del_arp_term_hosts(hosts2, is_add=1)
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self.verify_arp(src_host, hosts1, hosts2)
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self.bd_add_del(1, is_add=0)
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def test_l2bd_arp_term_06(self):
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""" L2BD arp/ND term - hosts with both ip4/ip6
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"""
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src_host4 = self.ip4_host(50, 50, "00:00:11:22:33:44")
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src_host6 = self.ip6_host(50, 50, "00:00:11:22:33:44")
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self.bd_add_del(1, is_add=1)
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# enable flood to make sure requests are not flooded
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self.set_bd_flags(1, arp_term=True, flood=True,
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uu_flood=False, learn=False)
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macs = self.mac_list(range(10, 20))
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hosts6 = self.ip6_hosts(5, 1, macs)
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hosts4 = self.ip4_hosts(5, 1, macs)
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self.add_del_arp_term_hosts(hosts4, is_add=1)
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self.add_del_arp_term_hosts(hosts6, is_add=1, is_ipv6=1)
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self.verify_arp(src_host4, hosts4, hosts4)
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self.verify_nd(src_host6, hosts6, hosts6)
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self.bd_add_del(1, is_add=0)
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def test_l2bd_arp_term_07(self):
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""" L2BD ND term - Add and Del hosts, verify ND replies
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"""
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src_host6 = self.ip6_host(50, 50, "00:00:11:22:33:44")
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self.bd_add_del(1, is_add=1)
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self.set_bd_flags(1, arp_term=True, flood=False,
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uu_flood=False, learn=False)
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macs = self.mac_list(range(10, 20))
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hosts6 = self.ip6_hosts(5, 1, macs)
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self.add_del_arp_term_hosts(hosts6, is_add=1, is_ipv6=1)
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self.verify_nd(src_host6, hosts6, hosts6)
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del_macs = self.mac_list(range(10, 15))
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deleted = self.ip6_hosts(5, 1, del_macs)
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self.add_del_arp_term_hosts(deleted, is_add=0, is_ipv6=1)
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self.verify_nd(src_host6, hosts6, hosts6 - deleted)
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self.bd_add_del(1, is_add=0)
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def test_l2bd_arp_term_08(self):
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""" L2BD ND term - Add and update IP+mac, verify ND replies
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"""
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src_host = self.ip6_host(50, 50, "00:00:11:22:33:44")
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self.bd_add_del(1, is_add=1)
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self.set_bd_flags(1, arp_term=True, flood=False,
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uu_flood=False, learn=False)
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macs1 = self.mac_list(range(10, 20))
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hosts = self.ip6_hosts(5, 1, macs1)
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self.add_del_arp_term_hosts(hosts, is_add=1, is_ipv6=1)
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self.verify_nd(src_host, hosts, hosts)
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macs2 = self.mac_list(range(20, 30))
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updated = self.ip6_hosts(5, 1, macs2)
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self.add_del_arp_term_hosts(updated, is_add=1, is_ipv6=1)
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self.verify_nd(src_host, hosts, updated)
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self.bd_add_del(1, is_add=0)
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def test_l2bd_arp_term_09(self):
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""" L2BD arp term - send garps, verify arp event reports
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"""
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self.vapi.want_ip4_arp_events()
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self.bd_add_del(1, is_add=1)
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self.set_bd_flags(1, arp_term=True, flood=False,
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uu_flood=False, learn=False)
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macs = self.mac_list(range(90, 95))
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hosts = self.ip4_hosts(5, 1, macs)
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garps = self.garp_reqs(hosts)
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self.bd_swifs(1)[0].add_stream(garps)
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self.pg_enable_capture(self.pg_interfaces)
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self.pg_start()
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evs = [self.vapi.wait_for_event(1, "ip4_arp_event")
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for i in range(len(hosts))]
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ev_hosts = self.arp_event_hosts(evs)
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self.assertEqual(len(ev_hosts ^ hosts), 0)
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def test_l2bd_arp_term_10(self):
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""" L2BD arp term - send duplicate garps, verify suppression
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"""
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|
macs = self.mac_list(range(70, 71))
|
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hosts = self.ip4_hosts(6, 1, macs)
|
|
|
|
""" send the packet 5 times expect one event
|
|
"""
|
|
garps = self.garp_reqs(hosts) * 5
|
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self.bd_swifs(1)[0].add_stream(garps)
|
|
|
|
self.pg_enable_capture(self.pg_interfaces)
|
|
self.pg_start()
|
|
evs = [self.vapi.wait_for_event(1, "ip4_arp_event")
|
|
for i in range(len(hosts))]
|
|
ev_hosts = self.arp_event_hosts(evs)
|
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self.assertEqual(len(ev_hosts ^ hosts), 0)
|
|
|
|
def test_l2bd_arp_term_11(self):
|
|
""" L2BD arp term - disable ip4 arp events,send garps, verify no events
|
|
"""
|
|
self.vapi.want_ip4_arp_events(enable_disable=0)
|
|
macs = self.mac_list(range(90, 95))
|
|
hosts = self.ip4_hosts(5, 1, macs)
|
|
|
|
garps = self.garp_reqs(hosts)
|
|
self.bd_swifs(1)[0].add_stream(garps)
|
|
|
|
self.pg_enable_capture(self.pg_interfaces)
|
|
self.pg_start()
|
|
self.sleep(1)
|
|
self.assertEqual(len(self.vapi.collect_events()), 0)
|
|
self.bd_add_del(1, is_add=0)
|
|
|
|
def test_l2bd_arp_term_12(self):
|
|
""" L2BD ND term - send NS packets verify reports
|
|
"""
|
|
self.vapi.want_ip6_nd_events(ip="::")
|
|
dst_host = self.ip6_host(50, 50, "00:00:11:22:33:44")
|
|
self.bd_add_del(1, is_add=1)
|
|
self.set_bd_flags(1, arp_term=True, flood=False,
|
|
uu_flood=False, learn=False)
|
|
macs = self.mac_list(range(10, 15))
|
|
hosts = self.ip6_hosts(5, 1, macs)
|
|
reqs = self.ns_reqs_dst(hosts, dst_host)
|
|
self.bd_swifs(1)[0].add_stream(reqs)
|
|
|
|
self.pg_enable_capture(self.pg_interfaces)
|
|
self.pg_start()
|
|
evs = [self.vapi.wait_for_event(2, "ip6_nd_event")
|
|
for i in range(len(hosts))]
|
|
ev_hosts = self.nd_event_hosts(evs)
|
|
self.assertEqual(len(ev_hosts ^ hosts), 0)
|
|
|
|
def test_l2bd_arp_term_13(self):
|
|
""" L2BD ND term - send duplicate ns, verify suppression
|
|
"""
|
|
dst_host = self.ip6_host(50, 50, "00:00:11:22:33:44")
|
|
macs = self.mac_list(range(10, 11))
|
|
hosts = self.ip6_hosts(5, 1, macs)
|
|
reqs = self.ns_reqs_dst(hosts, dst_host) * 5
|
|
self.bd_swifs(1)[0].add_stream(reqs)
|
|
|
|
self.pg_enable_capture(self.pg_interfaces)
|
|
self.pg_start()
|
|
evs = [self.vapi.wait_for_event(2, "ip6_nd_event")
|
|
for i in range(len(hosts))]
|
|
ev_hosts = self.nd_event_hosts(evs)
|
|
self.assertEqual(len(ev_hosts ^ hosts), 0)
|
|
|
|
def test_l2bd_arp_term_14(self):
|
|
""" L2BD ND term - disable ip4 arp events,send ns, verify no events
|
|
"""
|
|
self.vapi.want_ip6_nd_events(enable_disable=0, ip="::")
|
|
dst_host = self.ip6_host(50, 50, "00:00:11:22:33:44")
|
|
macs = self.mac_list(range(10, 15))
|
|
hosts = self.ip6_hosts(5, 1, macs)
|
|
reqs = self.ns_reqs_dst(hosts, dst_host)
|
|
self.bd_swifs(1)[0].add_stream(reqs)
|
|
|
|
self.pg_enable_capture(self.pg_interfaces)
|
|
self.pg_start()
|
|
self.sleep(1)
|
|
self.assertEqual(len(self.vapi.collect_events()), 0)
|
|
self.bd_add_del(1, is_add=0)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
unittest.main(testRunner=VppTestRunner)
|