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#!/usr/bin/env python
import unittest
import socket
from framework import VppTestCase, VppTestRunner, running_extended_tests
from vpp_igmp import *
from scapy.packet import Raw
from scapy.layers.l2 import Ether
from scapy.layers.inet import IP
from scapy.contrib.igmpv3 import *
from scapy.contrib.igmp import *
class TestIgmp(VppTestCase):
""" IGMP Test Case """
def setUp(self):
super(TestIgmp, self).setUp()
self.create_pg_interfaces(range(2))
self.sg_list = []
self.config_list = []
self.ip_addr = []
for pg in self.pg_interfaces:
pg.admin_up()
pg.config_ip4()
pg.resolve_arp()
def tearDown(self):
for pg in self.pg_interfaces:
self.vapi.igmp_clear_interface(pg.sw_if_index)
pg.unconfig_ip4()
pg.admin_down()
super(TestIgmp, self).tearDown()
def send(self, ti, pkts):
ti.add_stream(pkts)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
def test_igmp_parse_report(self):
""" IGMP parse Membership Report """
#
# VPP acts as a router
#
self.vapi.want_igmp_events(1)
# hos sends join IGMP 'join'
p_join = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IP(src=self.pg0.remote_ip4, dst='224.0.0.22', tos=0xc0) /
IGMPv3() /
IGMPv3mr(numgrp=1) /
IGMPv3gr(rtype=3, maddr="224.1.1.1", srcaddrs=["10.1.1.1"]))
self.send(self.pg0, p_join)
# search for the corresponding state created in VPP
dump = self.vapi.igmp_dump()
self.assertEqual(len(dump), 1)
self.assertEqual(dump[0].sw_if_index, self.pg0.sw_if_index)
self.assertEqual(dump[0].gaddr,
socket.inet_pton(socket.AF_INET,
"224.1.1.1"))
self.assertEqual(dump[0].saddr,
socket.inet_pton(socket.AF_INET,
"10.1.1.1"))
# VPP sends a notification that a new group has been joined
ev = self.vapi.wait_for_event(2, "igmp_event")
self.assertEqual(ev.saddr,
socket.inet_pton(socket.AF_INET,
"10.1.1.1"))
self.assertEqual(ev.gaddr,
socket.inet_pton(socket.AF_INET,
"224.1.1.1"))
self.assertEqual(ev.is_join, 1)
# host sends IGMP leave
p_leave = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IP(src=self.pg0.remote_ip4, dst='224.0.0.22', tos=0xc0) /
IGMPv3() /
IGMPv3mr(numgrp=1) /
IGMPv3gr(rtype=4, maddr="224.1.1.1", srcaddrs=["10.1.1.1"]))
self.send(self.pg0, p_leave)
# VPP sends a notification that a new group has been left
ev = self.vapi.wait_for_event(2, "igmp_event")
self.assertEqual(ev.saddr,
socket.inet_pton(socket.AF_INET,
"10.1.1.1"))
self.assertEqual(ev.gaddr,
socket.inet_pton(socket.AF_INET,
"224.1.1.1"))
self.assertEqual(ev.is_join, 0)
# state gone
dump = self.vapi.igmp_dump()
self.assertFalse(dump)
# resend the join
self.send(self.pg0, p_join)
dump = self.vapi.igmp_dump()
self.assertEqual(len(dump), 1)
self.assertEqual(dump[0].sw_if_index, self.pg0.sw_if_index)
self.assertEqual(dump[0].gaddr,
socket.inet_pton(socket.AF_INET,
"224.1.1.1"))
self.assertEqual(dump[0].saddr,
socket.inet_pton(socket.AF_INET,
"10.1.1.1"))
# IGMP block
p_block = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IP(src=self.pg0.remote_ip4, dst='224.0.0.22', tos=0xc0) /
IGMPv3() /
IGMPv3mr(numgrp=1) /
IGMPv3gr(rtype=6, maddr="224.1.1.1", srcaddrs=["10.1.1.1"]))
self.send(self.pg0, p_block)
dump = self.vapi.igmp_dump()
self.assertFalse(dump)
def verify_general_query(self, p):
ip = p[IP]
self.assertEqual(ip.dst, "224.0.0.1")
self.assertEqual(ip.proto, 2)
igmp = p[IGMPv3]
self.assertEqual(igmp.type, 0x11)
self.assertEqual(igmp.gaddr, "0.0.0.0")
def test_igmp_send_query(self):
""" IGMP send General Query """
#
# VPP acts as a router.
# Send a membership report so VPP builds state
#
p_mr = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IP(src=self.pg0.remote_ip4, dst='224.0.0.22') /
IGMPv3() /
IGMPv3mr(numgrp=1) /
IGMPv3gr(rtype=3, maddr="224.1.1.1", srcaddrs=["10.1.1.1"]))
self.send(self.pg0, p_mr)
self.logger.info(self.vapi.cli("sh igmp config"))
#
# wait for VPP to send out the General Query
#
capture = self.pg0.get_capture(1, timeout=61)
self.verify_general_query(capture[0])
#
# the state will expire in 10 more seconds
#
self.sleep(10)
self.assertFalse(self.vapi.igmp_dump())
@unittest.skipUnless(running_extended_tests(), "part of extended tests")
def test_igmp_src_exp(self):
""" IGMP per source timer """
#
# VPP Acts as a router
#
# Host join for (10.1.1.1,224.1.1.1)
p_mr1 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IP(src=self.pg0.remote_ip4, dst='224.0.0.22') /
IGMPv3() /
IGMPv3mr(numgrp=1) /
IGMPv3gr(rtype=3, maddr="224.1.1.1", srcaddrs=["10.1.1.1"]))
self.send(self.pg0, p_mr1)
# VPP (router) sends General Query
capture = self.pg0.get_capture(1, timeout=61)
self.verify_general_query(capture[0])
# host join for same G and another S: (10.1.1.2,224.1.1.1)
# therefore leaving (10.1.1.1,224.1.1.1)
p_mr2 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IP(src=self.pg0.remote_ip4, dst='224.0.0.22') /
IGMPv3() /
IGMPv3mr(numgrp=1) /
IGMPv3gr(rtype=2, maddr="224.1.1.1", srcaddrs=["10.1.1.2"]))
self.send(self.pg0, p_mr2)
# wait for VPP to send general query
capture = self.pg0.get_capture(1, timeout=61)
self.verify_general_query(capture[0])
# host leaves (10.1.1.2,224.1.1.1)
p_l = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IP(src=self.pg0.remote_ip4, dst='224.0.0.22') /
IGMPv3() /
IGMPv3mr(numgrp=1) /
IGMPv3gr(rtype=2, maddr="224.1.1.1", srcaddrs=["10.1.1.2"]))
self.send(self.pg0, p_l)
# FIXME BUG
p_l = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IP(src=self.pg0.remote_ip4, dst='224.0.0.22') /
IGMPv3() /
IGMPv3mr(numgrp=1) /
IGMPv3gr(rtype=2, maddr="224.1.1.1", srcaddrs=["10.1.1.1"]))
self.send(self.pg0, p_l)
#
# host has left all groups, no state left.
#
self.sleep(10)
self.logger.error(self.vapi.cli("sh igmp config"))
self.assertFalse(self.vapi.igmp_dump())
def test_igmp_query_resp(self):
""" IGMP General Query response """
#
# VPP acting as a host.
# Add a listener in VPP for (10.1.1.1,244.1.1.1)
#
self.config_list.append(
VppIgmpConfig(
self, self.pg0.sw_if_index, IgmpSG(
socket.inet_pton(
socket.AF_INET, "10.1.1.1"), socket.inet_pton(
socket.AF_INET, "224.1.1.1"))))
self.config_list[0].add_vpp_config()
# verify state exists
self.assertTrue(self.vapi.igmp_dump(self.pg0.sw_if_index))
#
# Send a general query (from a router)
#
p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IP(src=self.pg0.remote_ip4, dst='224.0.0.1', tos=0xc0) /
IGMPv3(type=0x11, mrcode=100) /
IGMPv3mq(gaddr="0.0.0.0"))
self.send(self.pg0, p)
#
# expect VPP to respond with a membership report for the
# (10.1.1.1, 224.1.1.1) state
#
capture = self.pg0.get_capture(1, timeout=10)
self.assertEqual(capture[0][IGMPv3].type, 0x22)
self.assertEqual(capture[0][IGMPv3mr].numgrp, 1)
self.assertEqual(capture[0][IGMPv3gr].rtype, 1)
self.assertEqual(capture[0][IGMPv3gr].numsrc, 1)
self.assertEqual(capture[0][IGMPv3gr].maddr, "224.1.1.1")
self.assertEqual(len(capture[0][IGMPv3gr].srcaddrs), 1)
self.assertEqual(capture[0][IGMPv3gr].srcaddrs[0], "10.1.1.1")
def test_igmp_listen(self):
""" IGMP listen (S,G)s """
#
# VPP acts as a host
# Add IGMP group state to multiple interfaces and validate its
# presence
#
for pg in self.pg_interfaces:
self.sg_list.append(IgmpSG(socket.inet_pton(
socket.AF_INET, "10.1.1.%d" % pg._sw_if_index),
socket.inet_pton(socket.AF_INET, "224.1.1.1")))
for pg in self.pg_interfaces:
self.config_list.append(
VppIgmpConfig(
self,
pg._sw_if_index,
self.sg_list))
self.config_list[-1].add_vpp_config()
for config in self.config_list:
dump = self.vapi.igmp_dump(config.sw_if_index)
self.assertTrue(dump)
self.assertEqual(len(dump), len(config.sg_list))
for idx, e in enumerate(dump):
self.assertEqual(e.sw_if_index, config.sw_if_index)
self.assertEqual(e.saddr, config.sg_list[idx].saddr)
self.assertEqual(e.gaddr, config.sg_list[idx].gaddr)
for config in self.config_list:
config.remove_vpp_config()
dump = self.vapi.igmp_dump()
self.assertFalse(dump)
if __name__ == '__main__':
unittest.main(testRunner=VppTestRunner)
|
