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vpp/test/test_igmp.py
Vladislav Grishenko a58dae61ae igmp: validate ip router alert option length 
It's known there're one or more 32-bit increments in the ip
header. So just check ip router alert option length with minimal
performance impact, and don't care of the total options length.

Type: fix
Signed-off-by: Vladislav Grishenko <themiron@yandex-team.ru>
Signed-off-by: Dmitry Valter <d-valter@yandex-team.ru>
Change-Id: I46dd06516f793846b931a1dc8612f2735f8d24d3
2022-09-19 01:46:57 +00:00

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#!/usr/bin/env python3
import unittest
from scapy.layers.l2 import Ether
from scapy.packet import Raw
from scapy.layers.inet import IP, IPOption
from scapy.contrib.igmpv3 import IGMPv3, IGMPv3gr, IGMPv3mq, IGMPv3mr
from framework import tag_fixme_vpp_workers
from framework import VppTestCase, VppTestRunner
from vpp_igmp import (
find_igmp_state,
IGMP_FILTER,
IgmpRecord,
IGMP_MODE,
IgmpSG,
VppHostState,
wait_for_igmp_event,
)
from vpp_ip_route import find_mroute, VppIpTable
class IgmpMode:
HOST = 1
ROUTER = 0
@tag_fixme_vpp_workers
class TestIgmp(VppTestCase):
"""IGMP Test Case"""
@classmethod
def setUpClass(cls):
super(TestIgmp, cls).setUpClass()
@classmethod
def tearDownClass(cls):
super(TestIgmp, cls).tearDownClass()
def setUp(self):
super(TestIgmp, self).setUp()
self.create_pg_interfaces(range(4))
self.sg_list = []
self.config_list = []
self.ip_addr = []
self.ip_table = VppIpTable(self, 1)
self.ip_table.add_vpp_config()
for pg in self.pg_interfaces[2:]:
pg.set_table_ip4(1)
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.set_table_ip4(0)
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_flush(self):
"""IGMP Link Up/down and Flush"""
#
# FIX THIS. Link down.
#
def test_igmp_enable(self):
"""IGMP enable/disable on an interface
check for the addition/removal of the IGMP mroutes"""
self.vapi.igmp_enable_disable(self.pg0.sw_if_index, 1, IGMP_MODE.HOST)
self.vapi.igmp_enable_disable(self.pg1.sw_if_index, 1, IGMP_MODE.HOST)
self.assertTrue(find_mroute(self, "224.0.0.1", "0.0.0.0", 32))
self.assertTrue(find_mroute(self, "224.0.0.22", "0.0.0.0", 32))
self.vapi.igmp_enable_disable(self.pg2.sw_if_index, 1, IGMP_MODE.HOST)
self.vapi.igmp_enable_disable(self.pg3.sw_if_index, 1, IGMP_MODE.HOST)
self.assertTrue(find_mroute(self, "224.0.0.1", "0.0.0.0", 32, table_id=1))
self.assertTrue(find_mroute(self, "224.0.0.22", "0.0.0.0", 32, table_id=1))
self.vapi.igmp_enable_disable(self.pg0.sw_if_index, 0, IGMP_MODE.HOST)
self.vapi.igmp_enable_disable(self.pg1.sw_if_index, 0, IGMP_MODE.HOST)
self.vapi.igmp_enable_disable(self.pg2.sw_if_index, 0, IGMP_MODE.HOST)
self.vapi.igmp_enable_disable(self.pg3.sw_if_index, 0, IGMP_MODE.HOST)
self.assertTrue(find_mroute(self, "224.0.0.1", "0.0.0.0", 32))
self.assertFalse(find_mroute(self, "224.0.0.22", "0.0.0.0", 32))
self.assertTrue(find_mroute(self, "224.0.0.1", "0.0.0.0", 32, table_id=1))
self.assertFalse(find_mroute(self, "224.0.0.22", "0.0.0.0", 32, table_id=1))
def verify_general_query(self, p):
ip = p[IP]
self.assertEqual(len(ip.options), 1)
self.assertEqual(ip.options[0].option, 20)
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 verify_group_query(self, p, grp, srcs):
ip = p[IP]
self.assertEqual(ip.dst, grp)
self.assertEqual(ip.proto, 2)
self.assertEqual(len(ip.options), 1)
self.assertEqual(ip.options[0].option, 20)
self.assertEqual(ip.proto, 2)
igmp = p[IGMPv3]
self.assertEqual(igmp.type, 0x11)
self.assertEqual(igmp.gaddr, grp)
def verify_report(self, rx, records):
ip = rx[IP]
self.assertEqual(rx[IP].dst, "224.0.0.22")
self.assertEqual(len(ip.options), 1)
self.assertEqual(ip.options[0].option, 20)
self.assertEqual(ip.proto, 2)
self.assertEqual(
IGMPv3.igmpv3types[rx[IGMPv3].type], "Version 3 Membership Report"
)
self.assertEqual(rx[IGMPv3mr].numgrp, len(records))
received = rx[IGMPv3mr].records
for ii in range(len(records)):
gr = received[ii]
r = records[ii]
self.assertEqual(IGMPv3gr.igmpv3grtypes[gr.rtype], r.type)
self.assertEqual(gr.numsrc, len(r.sg.saddrs))
self.assertEqual(gr.maddr, r.sg.gaddr)
self.assertEqual(len(gr.srcaddrs), len(r.sg.saddrs))
self.assertEqual(sorted(gr.srcaddrs), sorted(r.sg.saddrs))
def add_group(self, itf, sg, n_pkts=2):
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
hs = VppHostState(self, IGMP_FILTER.INCLUDE, itf.sw_if_index, sg)
hs.add_vpp_config()
capture = itf.get_capture(n_pkts, timeout=10)
# reports are transmitted twice due to default rebostness value=2
self.verify_report(capture[0], [IgmpRecord(sg, "Allow New Sources")]),
self.verify_report(capture[1], [IgmpRecord(sg, "Allow New Sources")]),
return hs
def remove_group(self, hs):
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
hs.remove_vpp_config()
capture = self.pg0.get_capture(1, timeout=10)
self.verify_report(capture[0], [IgmpRecord(hs.sg, "Block Old Sources")])
def test_igmp_host(self):
"""IGMP Host functions"""
#
# Enable interface for host functions
#
self.vapi.igmp_enable_disable(self.pg0.sw_if_index, 1, IGMP_MODE.HOST)
#
# Add one S,G of state and expect a state-change event report
# indicating the addition of the S,G
#
h1 = self.add_group(self.pg0, IgmpSG("239.1.1.1", ["1.1.1.1"]))
# search for the corresponding state created in VPP
dump = self.vapi.igmp_dump(self.pg0.sw_if_index)
self.assertEqual(len(dump), 1)
self.assertTrue(find_igmp_state(dump, self.pg0, "239.1.1.1", "1.1.1.1"))
#
# Send a general query (to the all router's address)
# expect VPP to respond with a membership report.
# Pad the query with 0 - some devices in the big wild
# internet are prone to this.
#
p_g = (
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="Membership Query", mrcode=100)
/ IGMPv3mq(gaddr="0.0.0.0")
/ Raw(b"\x00" * 10)
)
self.send(self.pg0, p_g)
capture = self.pg0.get_capture(1, timeout=10)
self.verify_report(capture[0], [IgmpRecord(h1.sg, "Mode Is Include")])
#
# Group specific query
#
p_gs = (
Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
/ IP(
src=self.pg0.remote_ip4,
dst="239.1.1.1",
tos=0xC0,
options=[
IPOption(
copy_flag=1, optclass="control", option="router_alert", length=4
)
],
)
/ IGMPv3(type="Membership Query", mrcode=100)
/ IGMPv3mq(gaddr="239.1.1.1")
)
self.send(self.pg0, p_gs)
capture = self.pg0.get_capture(1, timeout=10)
self.verify_report(capture[0], [IgmpRecord(h1.sg, "Mode Is Include")])
#
# A group and source specific query, with the source matching
# the source VPP has
#
p_gs1 = (
Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
/ IP(
src=self.pg0.remote_ip4,
dst="239.1.1.1",
tos=0xC0,
options=[
IPOption(
copy_flag=1, optclass="control", option="router_alert", length=4
)
],
)
/ IGMPv3(type="Membership Query", mrcode=100)
/ IGMPv3mq(gaddr="239.1.1.1", srcaddrs=["1.1.1.1"])
)
self.send(self.pg0, p_gs1)
capture = self.pg0.get_capture(1, timeout=10)
self.verify_report(capture[0], [IgmpRecord(h1.sg, "Mode Is Include")])
#
# A group and source specific query that reports more sources
# than the packet actually has.
#
p_gs2 = (
Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
/ IP(
src=self.pg0.remote_ip4,
dst="239.1.1.1",
tos=0xC0,
options=[
IPOption(
copy_flag=1, optclass="control", option="router_alert", length=4
)
],
)
/ IGMPv3(type="Membership Query", mrcode=100)
/ IGMPv3mq(gaddr="239.1.1.1", numsrc=4, srcaddrs=["1.1.1.1"])
)
self.send_and_assert_no_replies(self.pg0, p_gs2, timeout=10)
#
# A group and source specific query, with the source NOT matching
# the source VPP has. There should be no response.
#
p_gs2 = (
Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
/ IP(
src=self.pg0.remote_ip4,
dst="239.1.1.1",
tos=0xC0,
options=[
IPOption(
copy_flag=1, optclass="control", option="router_alert", length=4
)
],
)
/ IGMPv3(type="Membership Query", mrcode=100)
/ IGMPv3mq(gaddr="239.1.1.1", srcaddrs=["1.1.1.2"])
)
self.send_and_assert_no_replies(self.pg0, p_gs2, timeout=10)
#
# A group and source specific query, with the multiple sources
# one of which matches the source VPP has.
# The report should contain only the source VPP has.
#
p_gs3 = (
Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
/ IP(
src=self.pg0.remote_ip4,
dst="239.1.1.1",
tos=0xC0,
options=[
IPOption(
copy_flag=1, optclass="control", option="router_alert", length=4
)
],
)
/ IGMPv3(type="Membership Query", mrcode=100)
/ IGMPv3mq(gaddr="239.1.1.1", srcaddrs=["1.1.1.1", "1.1.1.2", "1.1.1.3"])
)
self.send(self.pg0, p_gs3)
capture = self.pg0.get_capture(1, timeout=10)
self.verify_report(capture[0], [IgmpRecord(h1.sg, "Mode Is Include")])
#
# Two source and group specific queries in quick succession, the
# first does not have VPPs source the second does. then vice-versa
#
self.send(self.pg0, [p_gs2, p_gs1])
capture = self.pg0.get_capture(1, timeout=10)
self.verify_report(capture[0], [IgmpRecord(h1.sg, "Mode Is Include")])
self.send(self.pg0, [p_gs1, p_gs2])
capture = self.pg0.get_capture(1, timeout=10)
self.verify_report(capture[0], [IgmpRecord(h1.sg, "Mode Is Include")])
#
# remove state, expect the report for the removal
#
self.remove_group(h1)
dump = self.vapi.igmp_dump()
self.assertFalse(dump)
#
# A group with multiple sources
#
h2 = self.add_group(
self.pg0, IgmpSG("239.1.1.1", ["1.1.1.1", "1.1.1.2", "1.1.1.3"])
)
# search for the corresponding state created in VPP
dump = self.vapi.igmp_dump(self.pg0.sw_if_index)
self.assertEqual(len(dump), 3)
for s in h2.sg.saddrs:
self.assertTrue(find_igmp_state(dump, self.pg0, "239.1.1.1", s))
#
# Send a general query (to the all router's address)
# expect VPP to respond with a membership report will all sources
#
self.send(self.pg0, p_g)
capture = self.pg0.get_capture(1, timeout=10)
self.verify_report(capture[0], [IgmpRecord(h2.sg, "Mode Is Include")])
#
# Group and source specific query; some present some not
#
p_gs = (
Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
/ IP(
src=self.pg0.remote_ip4,
dst="239.1.1.1",
tos=0xC0,
options=[
IPOption(
copy_flag=1, optclass="control", option="router_alert", length=4
)
],
)
/ IGMPv3(type="Membership Query", mrcode=100)
/ IGMPv3mq(gaddr="239.1.1.1", srcaddrs=["1.1.1.1", "1.1.1.2", "1.1.1.4"])
)
self.send(self.pg0, p_gs)
capture = self.pg0.get_capture(1, timeout=10)
self.verify_report(
capture[0],
[
IgmpRecord(
IgmpSG("239.1.1.1", ["1.1.1.1", "1.1.1.2"]), "Mode Is Include"
)
],
)
#
# add loads more groups
#
h3 = self.add_group(
self.pg0, IgmpSG("239.1.1.2", ["2.1.1.1", "2.1.1.2", "2.1.1.3"])
)
h4 = self.add_group(
self.pg0, IgmpSG("239.1.1.3", ["3.1.1.1", "3.1.1.2", "3.1.1.3"])
)
h5 = self.add_group(
self.pg0, IgmpSG("239.1.1.4", ["4.1.1.1", "4.1.1.2", "4.1.1.3"])
)
h6 = self.add_group(
self.pg0, IgmpSG("239.1.1.5", ["5.1.1.1", "5.1.1.2", "5.1.1.3"])
)
h7 = self.add_group(
self.pg0,
IgmpSG(
"239.1.1.6",
[
"6.1.1.1",
"6.1.1.2",
"6.1.1.3",
"6.1.1.4",
"6.1.1.5",
"6.1.1.6",
"6.1.1.7",
"6.1.1.8",
"6.1.1.9",
"6.1.1.10",
"6.1.1.11",
"6.1.1.12",
"6.1.1.13",
"6.1.1.14",
"6.1.1.15",
"6.1.1.16",
],
),
)
#
# general query.
# the order the groups come in is not important, so what is
# checked for is what VPP is sending today.
#
self.send(self.pg0, p_g)
capture = self.pg0.get_capture(1, timeout=10)
self.verify_report(
capture[0],
[
IgmpRecord(h3.sg, "Mode Is Include"),
IgmpRecord(h2.sg, "Mode Is Include"),
IgmpRecord(h6.sg, "Mode Is Include"),
IgmpRecord(h4.sg, "Mode Is Include"),
IgmpRecord(h5.sg, "Mode Is Include"),
IgmpRecord(h7.sg, "Mode Is Include"),
],
)
#
# modify a group to add and remove some sources
#
h7.sg = IgmpSG(
"239.1.1.6",
[
"6.1.1.1",
"6.1.1.2",
"6.1.1.5",
"6.1.1.6",
"6.1.1.7",
"6.1.1.8",
"6.1.1.9",
"6.1.1.10",
"6.1.1.11",
"6.1.1.12",
"6.1.1.13",
"6.1.1.14",
"6.1.1.15",
"6.1.1.16",
"6.1.1.17",
"6.1.1.18",
],
)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
h7.add_vpp_config()
capture = self.pg0.get_capture(1, timeout=10)
self.verify_report(
capture[0],
[
IgmpRecord(
IgmpSG("239.1.1.6", ["6.1.1.17", "6.1.1.18"]), "Allow New Sources"
),
IgmpRecord(
IgmpSG("239.1.1.6", ["6.1.1.3", "6.1.1.4"]), "Block Old Sources"
),
],
)
#
# add an additional groups with many sources so that each group
# consumes the link MTU. We should therefore see multiple state
# state reports when queried.
#
self.vapi.sw_interface_set_mtu(self.pg0.sw_if_index, [560, 0, 0, 0])
src_list = []
for i in range(128):
src_list.append("10.1.1.%d" % i)
h8 = self.add_group(self.pg0, IgmpSG("238.1.1.1", src_list))
h9 = self.add_group(self.pg0, IgmpSG("238.1.1.2", src_list))
self.send(self.pg0, p_g)
capture = self.pg0.get_capture(4, timeout=10)
self.verify_report(
capture[0],
[
IgmpRecord(h3.sg, "Mode Is Include"),
IgmpRecord(h2.sg, "Mode Is Include"),
IgmpRecord(h6.sg, "Mode Is Include"),
IgmpRecord(h4.sg, "Mode Is Include"),
IgmpRecord(h5.sg, "Mode Is Include"),
],
)
self.verify_report(capture[1], [IgmpRecord(h8.sg, "Mode Is Include")])
self.verify_report(capture[2], [IgmpRecord(h7.sg, "Mode Is Include")])
self.verify_report(capture[3], [IgmpRecord(h9.sg, "Mode Is Include")])
#
# drop the MTU further (so a 128 sized group won't fit)
#
self.vapi.sw_interface_set_mtu(self.pg0.sw_if_index, [512, 0, 0, 0])
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
h10 = VppHostState(
self,
IGMP_FILTER.INCLUDE,
self.pg0.sw_if_index,
IgmpSG("238.1.1.3", src_list),
)
h10.add_vpp_config()
capture = self.pg0.get_capture(2, timeout=10)
# wait for a little bit
self.sleep(1)
#
# remove state, expect the report for the removal
# the dump should be empty
#
self.vapi.sw_interface_set_mtu(self.pg0.sw_if_index, [600, 0, 0, 0])
self.remove_group(h8)
self.remove_group(h9)
self.remove_group(h2)
self.remove_group(h3)
self.remove_group(h4)
self.remove_group(h5)
self.remove_group(h6)
self.remove_group(h7)
self.remove_group(h10)
self.logger.info(self.vapi.cli("sh igmp config"))
self.assertFalse(self.vapi.igmp_dump())
#
# TODO
# ADD STATE ON MORE INTERFACES
#
self.vapi.igmp_enable_disable(self.pg0.sw_if_index, 0, IGMP_MODE.HOST)
def test_igmp_router(self):
"""IGMP Router Functions"""
#
# Drop reports when not enabled
#
p_j = (
Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
/ IP(
src=self.pg0.remote_ip4,
dst="224.0.0.22",
tos=0xC0,
ttl=1,
options=[
IPOption(
copy_flag=1, optclass="control", option="router_alert", length=4
)
],
)
/ IGMPv3(type="Version 3 Membership Report")
/ IGMPv3mr(numgrp=1)
/ IGMPv3gr(
rtype="Allow New Sources",
maddr="239.1.1.1",
srcaddrs=["10.1.1.1", "10.1.1.2"],
)
)
p_l = (
Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
/ IP(
src=self.pg0.remote_ip4,
dst="224.0.0.22",
tos=0xC0,
options=[
IPOption(
copy_flag=1, optclass="control", option="router_alert", length=4
)
],
)
/ IGMPv3(type="Version 3 Membership Report")
/ IGMPv3mr(numgrp=1)
/ IGMPv3gr(
rtype="Block Old Sources",
maddr="239.1.1.1",
srcaddrs=["10.1.1.1", "10.1.1.2"],
)
)
self.send(self.pg0, p_j)
self.assertFalse(self.vapi.igmp_dump())
#
# drop the default timer values so these tests execute in a
# reasonable time frame
#
self.vapi.cli("test igmp timers query 1 src 3 leave 1")
#
# enable router functions on the interface
#
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
self.vapi.igmp_enable_disable(self.pg0.sw_if_index, 1, IGMP_MODE.ROUTER)
self.vapi.want_igmp_events(1)
#
# wait for router to send general query
#
for ii in range(3):
capture = self.pg0.get_capture(1, timeout=2)
self.verify_general_query(capture[0])
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
#
# re-send the report. VPP should now hold state for the new group
# VPP sends a notification that a new group has been joined
#
self.send(self.pg0, p_j)
self.assertTrue(
wait_for_igmp_event(self, 1, self.pg0, "239.1.1.1", "10.1.1.1", 1)
)
self.assertTrue(
wait_for_igmp_event(self, 1, self.pg0, "239.1.1.1", "10.1.1.2", 1)
)
dump = self.vapi.igmp_dump(self.pg0.sw_if_index)
self.assertEqual(len(dump), 2)
self.assertTrue(find_igmp_state(dump, self.pg0, "239.1.1.1", "10.1.1.1"))
self.assertTrue(find_igmp_state(dump, self.pg0, "239.1.1.1", "10.1.1.2"))
#
# wait for the per-source timer to expire
# the state should be reaped
# VPP sends a notification that the group has been left
#
self.assertTrue(
wait_for_igmp_event(self, 4, self.pg0, "239.1.1.1", "10.1.1.1", 0)
)
self.assertTrue(
wait_for_igmp_event(self, 1, self.pg0, "239.1.1.1", "10.1.1.2", 0)
)
self.assertFalse(self.vapi.igmp_dump())
#
# resend the join. wait for two queries and then send a current-state
# record to include all sources. this should reset the expiry time
# on the sources and thus they will still be present in 2 seconds time.
# If the source timer was not refreshed, then the state would have
# expired in 3 seconds.
#
self.send(self.pg0, p_j)
self.assertTrue(
wait_for_igmp_event(self, 1, self.pg0, "239.1.1.1", "10.1.1.1", 1)
)
self.assertTrue(
wait_for_igmp_event(self, 1, self.pg0, "239.1.1.1", "10.1.1.2", 1)
)
dump = self.vapi.igmp_dump(self.pg0.sw_if_index)
self.assertEqual(len(dump), 2)
capture = self.pg0.get_capture(2, timeout=3)
self.verify_general_query(capture[0])
self.verify_general_query(capture[1])
p_cs = (
Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
/ IP(
src=self.pg0.remote_ip4,
dst="224.0.0.22",
tos=0xC0,
options=[
IPOption(
copy_flag=1, optclass="control", option="router_alert", length=4
)
],
)
/ IGMPv3(type="Version 3 Membership Report")
/ IGMPv3mr(numgrp=1)
/ IGMPv3gr(
rtype="Mode Is Include",
maddr="239.1.1.1",
srcaddrs=["10.1.1.1", "10.1.1.2"],
)
)
self.send(self.pg0, p_cs)
self.sleep(2)
dump = self.vapi.igmp_dump(self.pg0.sw_if_index)
self.assertEqual(len(dump), 2)
self.assertTrue(find_igmp_state(dump, self.pg0, "239.1.1.1", "10.1.1.1"))
self.assertTrue(find_igmp_state(dump, self.pg0, "239.1.1.1", "10.1.1.2"))
#
# wait for the per-source timer to expire
# the state should be reaped
#
self.assertTrue(
wait_for_igmp_event(self, 4, self.pg0, "239.1.1.1", "10.1.1.1", 0)
)
self.assertTrue(
wait_for_igmp_event(self, 1, self.pg0, "239.1.1.1", "10.1.1.2", 0)
)
self.assertFalse(self.vapi.igmp_dump())
#
# resend the join, then a leave. Router sends a group+source
# specific query containing both sources
#
self.send(self.pg0, p_j)
self.assertTrue(
wait_for_igmp_event(self, 1, self.pg0, "239.1.1.1", "10.1.1.1", 1)
)
self.assertTrue(
wait_for_igmp_event(self, 1, self.pg0, "239.1.1.1", "10.1.1.2", 1)
)
dump = self.vapi.igmp_dump(self.pg0.sw_if_index)
self.assertEqual(len(dump), 2)
self.send(self.pg0, p_l)
capture = self.pg0.get_capture(1, timeout=3)
self.verify_group_query(capture[0], "239.1.1.1", ["10.1.1.1", "10.1.1.2"])
#
# the group specific query drops the timeout to leave (=1) seconds
#
self.assertTrue(
wait_for_igmp_event(self, 2, self.pg0, "239.1.1.1", "10.1.1.1", 0)
)
self.assertTrue(
wait_for_igmp_event(self, 1, self.pg0, "239.1.1.1", "10.1.1.2", 0)
)
self.assertFalse(self.vapi.igmp_dump())
self.assertFalse(self.vapi.igmp_dump())
#
# a TO_EX({}) / IN_EX({}) is treated like a (*,G) join
#
p_j = (
Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
/ IP(
src=self.pg0.remote_ip4,
dst="224.0.0.22",
tos=0xC0,
ttl=1,
options=[
IPOption(
copy_flag=1, optclass="control", option="router_alert", length=4
)
],
)
/ IGMPv3(type="Version 3 Membership Report")
/ IGMPv3mr(numgrp=1)
/ IGMPv3gr(rtype="Change To Exclude Mode", maddr="239.1.1.2")
)
self.send(self.pg0, p_j)
self.assertTrue(
wait_for_igmp_event(self, 1, self.pg0, "239.1.1.2", "0.0.0.0", 1)
)
p_j = (
Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
/ IP(
src=self.pg0.remote_ip4,
dst="224.0.0.22",
tos=0xC0,
ttl=1,
options=[
IPOption(
copy_flag=1, optclass="control", option="router_alert", length=4
)
],
)
/ IGMPv3(type="Version 3 Membership Report")
/ IGMPv3mr(numgrp=1)
/ IGMPv3gr(rtype="Mode Is Exclude", maddr="239.1.1.3")
)
self.send(self.pg0, p_j)
self.assertTrue(
wait_for_igmp_event(self, 1, self.pg0, "239.1.1.3", "0.0.0.0", 1)
)
#
# A 'allow sources' for {} should be ignored as it should
# never be sent.
#
p_j = (
Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
/ IP(
src=self.pg0.remote_ip4,
dst="224.0.0.22",
tos=0xC0,
ttl=1,
options=[
IPOption(
copy_flag=1, optclass="control", option="router_alert", length=4
)
],
)
/ IGMPv3(type="Version 3 Membership Report")
/ IGMPv3mr(numgrp=1)
/ IGMPv3gr(rtype="Allow New Sources", maddr="239.1.1.4")
)
self.send(self.pg0, p_j)
dump = self.vapi.igmp_dump(self.pg0.sw_if_index)
self.assertTrue(find_igmp_state(dump, self.pg0, "239.1.1.2", "0.0.0.0"))
self.assertTrue(find_igmp_state(dump, self.pg0, "239.1.1.3", "0.0.0.0"))
self.assertFalse(find_igmp_state(dump, self.pg0, "239.1.1.4", "0.0.0.0"))
#
# a TO_IN({}) and IS_IN({}) are treated like a (*,G) leave
#
self.vapi.cli("set logging class igmp level debug")
p_l = (
Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
/ IP(
src=self.pg0.remote_ip4,
dst="224.0.0.22",
tos=0xC0,
ttl=1,
options=[
IPOption(
copy_flag=1, optclass="control", option="router_alert", length=4
)
],
)
/ IGMPv3(type="Version 3 Membership Report")
/ IGMPv3mr(numgrp=1)
/ IGMPv3gr(rtype="Change To Include Mode", maddr="239.1.1.2")
)
self.send(self.pg0, p_l)
self.assertTrue(
wait_for_igmp_event(self, 2, self.pg0, "239.1.1.2", "0.0.0.0", 0)
)
p_l = (
Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
/ IP(
src=self.pg0.remote_ip4,
dst="224.0.0.22",
tos=0xC0,
ttl=1,
options=[
IPOption(
copy_flag=1, optclass="control", option="router_alert", length=4
)
],
)
/ IGMPv3(type="Version 3 Membership Report")
/ IGMPv3mr(numgrp=1)
/ IGMPv3gr(rtype="Mode Is Include", maddr="239.1.1.3")
)
self.send(self.pg0, p_l)
self.assertTrue(
wait_for_igmp_event(self, 2, self.pg0, "239.1.1.3", "0.0.0.0", 0)
)
self.assertFalse(self.vapi.igmp_dump(self.pg0.sw_if_index))
#
# disable router config
#
self.vapi.igmp_enable_disable(self.pg0.sw_if_index, 0, IGMP_MODE.ROUTER)
def _create_igmpv3_pck(self, itf, rtype, maddr, srcaddrs):
p = (
Ether(dst=itf.local_mac, src=itf.remote_mac)
/ IP(
src=itf.remote_ip4,
dst="224.0.0.22",
tos=0xC0,
ttl=1,
options=[
IPOption(
copy_flag=1, optclass="control", option="router_alert", length=4
)
],
)
/ IGMPv3(type="Version 3 Membership Report")
/ IGMPv3mr(numgrp=1)
/ IGMPv3gr(rtype=rtype, maddr=maddr, srcaddrs=srcaddrs)
)
return p
def test_igmp_proxy_device(self):
"""IGMP proxy device"""
self.pg2.admin_down()
self.pg2.unconfig_ip4()
self.pg2.set_table_ip4(0)
self.pg2.config_ip4()
self.pg2.admin_up()
self.vapi.cli("test igmp timers query 10 src 3 leave 1")
# enable IGMP
self.vapi.igmp_enable_disable(self.pg0.sw_if_index, 1, IGMP_MODE.HOST)
self.vapi.igmp_enable_disable(self.pg1.sw_if_index, 1, IGMP_MODE.ROUTER)
self.vapi.igmp_enable_disable(self.pg2.sw_if_index, 1, IGMP_MODE.ROUTER)
# create IGMP proxy device
self.vapi.igmp_proxy_device_add_del(0, self.pg0.sw_if_index, 1)
self.vapi.igmp_proxy_device_add_del_interface(0, self.pg1.sw_if_index, 1)
self.vapi.igmp_proxy_device_add_del_interface(0, self.pg2.sw_if_index, 1)
# send join on pg1. join should be proxied by pg0
p_j = self._create_igmpv3_pck(
self.pg1, "Allow New Sources", "239.1.1.1", ["10.1.1.1", "10.1.1.2"]
)
self.send(self.pg1, p_j)
capture = self.pg0.get_capture(1, timeout=1)
self.verify_report(
capture[0],
[
IgmpRecord(
IgmpSG("239.1.1.1", ["10.1.1.1", "10.1.1.2"]), "Allow New Sources"
)
],
)
self.assertTrue(find_mroute(self, "239.1.1.1", "0.0.0.0", 32))
# send join on pg2. join should be proxied by pg0.
# the group should contain only 10.1.1.3 as
# 10.1.1.1 was already reported
p_j = self._create_igmpv3_pck(
self.pg2, "Allow New Sources", "239.1.1.1", ["10.1.1.1", "10.1.1.3"]
)
self.send(self.pg2, p_j)
capture = self.pg0.get_capture(1, timeout=1)
self.verify_report(
capture[0],
[IgmpRecord(IgmpSG("239.1.1.1", ["10.1.1.3"]), "Allow New Sources")],
)
self.assertTrue(find_mroute(self, "239.1.1.1", "0.0.0.0", 32))
# send leave on pg2. leave for 10.1.1.3 should be proxyed
# as pg2 was the only interface interested in 10.1.1.3
p_l = self._create_igmpv3_pck(
self.pg2, "Block Old Sources", "239.1.1.1", ["10.1.1.3"]
)
self.send(self.pg2, p_l)
capture = self.pg0.get_capture(1, timeout=2)
self.verify_report(
capture[0],
[IgmpRecord(IgmpSG("239.1.1.1", ["10.1.1.3"]), "Block Old Sources")],
)
self.assertTrue(find_mroute(self, "239.1.1.1", "0.0.0.0", 32))
# disable igmp on pg1 (also removes interface from proxy device)
# proxy leave for 10.1.1.2. pg2 is still interested in 10.1.1.1
self.pg_enable_capture(self.pg_interfaces)
self.vapi.igmp_enable_disable(self.pg1.sw_if_index, 0, IGMP_MODE.ROUTER)
capture = self.pg0.get_capture(1, timeout=1)
self.verify_report(
capture[0],
[IgmpRecord(IgmpSG("239.1.1.1", ["10.1.1.2"]), "Block Old Sources")],
)
self.assertTrue(find_mroute(self, "239.1.1.1", "0.0.0.0", 32))
# disable IGMP on pg0 and pg1.
# disabling IGMP on pg0 (proxy device upstream interface)
# removes this proxy device
self.vapi.igmp_enable_disable(self.pg0.sw_if_index, 0, IGMP_MODE.HOST)
self.vapi.igmp_enable_disable(self.pg2.sw_if_index, 0, IGMP_MODE.ROUTER)
self.assertFalse(find_mroute(self, "239.1.1.1", "0.0.0.0", 32))
if __name__ == "__main__":
unittest.main(testRunner=VppTestRunner)
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