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Enable tests with VRF reset

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- needed to filter out ICMPv6 Neighbor Discovery - Neighbor
  Advertisement packets

- needed to reset routes of reset VRFs learned from ICMPv6
  Neighbor Discovery - Neighbor Advertisement packets after
  run_verify_test()

Change-Id: I8238d8f73428d511ab68ab7765d99ce7dc3a6633
Signed-off-by: Jan Gelety <jgelety@cisco.com>
This commit is contained in:
Jan Gelety
2017-02-23 15:01:29 +01:00
committed by Neale Ranns
parent 08a70f177d
commit b5b2ef5947
1 changed files with 73 additions and 37 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

110
test/test_ip6_vrf_multi_instance.py
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@ -6,9 +6,6 @@
interfaces in 5 VRFs are tested
- jumbo packets in configuration with 15 pg-ip6 interfaces leads to \
problems too
- Reset of FIB table / VRF does not remove routes from IP FIB (see Jira \
ticket https://jira.fd.io/browse/VPP-560) so checks of reset VRF tables \
are skipped in tests 2, 3 and 4
**config 1**
- add 15 pg-ip6 interfaces
@ -25,7 +22,7 @@
- no packet received in case of pg-ip6 interfaces not in VRF
**config 2**
- delete 2 VRFs
- reset 2 VRFs
**test 2**
- send IP6 packets between all pg-ip6 interfaces in all VRF groups
@ -36,7 +33,7 @@
- no packet received in case of pg-ip6 interfaces not in VRF
**config 3**
- add 1 of deleted VRFs and 1 new VRF
- add 1 of reset VRFs and 1 new VRF
**test 3**
- send IP6 packets between all pg-ip6 interfaces in all VRF groups
@ -47,7 +44,7 @@
- no packet received in case of pg-ip6 interfaces not in VRF
**config 4**
- delete all VRFs (i.e. no VRF except VRF=0 created)
- reset all VRFs (i.e. no VRF except VRF=0 created)
**test 4**
- send IP6 packets between all pg-ip6 interfaces in all VRF groups
@ -60,14 +57,40 @@
import unittest
import random
import socket
from scapy.packet import Raw
from scapy.layers.l2 import Ether
from scapy.layers.inet6 import IPv6, UDP
from scapy.layers.inet6 import UDP, IPv6, ICMPv6ND_NS, ICMPv6ND_RA, \
RouterAlert, IPv6ExtHdrHopByHop
from scapy.utils6 import in6_ismaddr, in6_isllsnmaddr, in6_getAddrType
from scapy.pton_ntop import inet_ntop
from scapy.data import IPV6_ADDR_UNICAST
from framework import VppTestCase, VppTestRunner
from util import ppp
# VRF status constants
VRF_NOT_CONFIGURED = 0
VRF_CONFIGURED = 1
VRF_RESET = 2
def is_ipv6_misc_ext(p):
""" Is packet one of uninteresting IPv6 broadcasts (extended to filter out
ICMPv6 Neighbor Discovery - Neighbor Advertisement packets too)? """
if p.haslayer(ICMPv6ND_RA):
if in6_ismaddr(p[IPv6].dst):
return True
if p.haslayer(ICMPv6ND_NS):
if in6_isllsnmaddr(p[IPv6].dst):
return True
if p.haslayer(IPv6ExtHdrHopByHop):
for o in p[IPv6ExtHdrHopByHop].options:
if isinstance(o, RouterAlert):
return True
return False
class TestIP6VrfMultiInst(VppTestCase):
""" IP6 VRF Multi-instance Test Case """
@ -112,8 +135,8 @@ class TestIP6VrfMultiInst(VppTestCase):
# Create list of VRFs
cls.vrf_list = list()
# Create list of deleted VRFs
cls.vrf_deleted_list = list()
# Create list of reset VRFs
cls.vrf_reset_list = list()
# Create list of pg_interfaces in VRFs
cls.pg_in_vrf = list()
@ -170,8 +193,8 @@ class TestIP6VrfMultiInst(VppTestCase):
self.logger.info("IPv6 VRF ID %d created" % vrf_id)
if vrf_id not in self.vrf_list:
self.vrf_list.append(vrf_id)
if vrf_id in self.vrf_deleted_list:
self.vrf_deleted_list.remove(vrf_id)
if vrf_id in self.vrf_reset_list:
self.vrf_reset_list.remove(vrf_id)
for j in range(self.pg_ifs_per_vrf):
pg_if = self.pg_if_by_vrf_id[vrf_id][j]
pg_if.set_table_ip6(vrf_id)
@ -189,16 +212,16 @@ class TestIP6VrfMultiInst(VppTestCase):
def reset_vrf(self, vrf_id):
"""
Delete required FIB table / VRF.
Reset required FIB table / VRF.
:param int vrf_id: The FIB table / VRF ID to be deleted.
:param int vrf_id: The FIB table / VRF ID to be reset.
"""
# self.vapi.reset_vrf(vrf_id, is_ipv6=1)
self.vapi.reset_fib(vrf_id, is_ipv6=1)
if vrf_id in self.vrf_list:
self.vrf_list.remove(vrf_id)
if vrf_id not in self.vrf_deleted_list:
self.vrf_deleted_list.append(vrf_id)
if vrf_id not in self.vrf_reset_list:
self.vrf_reset_list.append(vrf_id)
for j in range(self.pg_ifs_per_vrf):
pg_if = self.pg_if_by_vrf_id[vrf_id][j]
if pg_if in self.pg_in_vrf:
@ -287,16 +310,24 @@ class TestIP6VrfMultiInst(VppTestCase):
:return: 1 if the FIB table / VRF ID is configured, otherwise return 0.
"""
ip6_fib_dump = self.vapi.ip6_fib_dump()
vrf_exist = False
vrf_count = 0
for ip6_fib_details in ip6_fib_dump:
if ip6_fib_details[2] == vrf_id:
vrf_count += 1
if vrf_count == 0:
if not vrf_exist:
vrf_exist = True
addr = inet_ntop(socket.AF_INET6, ip6_fib_details[4])
addrtype = in6_getAddrType(addr)
vrf_count += 1 if addrtype == IPV6_ADDR_UNICAST else 0
if not vrf_exist and vrf_count == 0:
self.logger.info("IPv6 VRF ID %d is not configured" % vrf_id)
return 0
return VRF_NOT_CONFIGURED
elif vrf_exist and vrf_count == 0:
self.logger.info("IPv6 VRF ID %d has been reset" % vrf_id)
return VRF_RESET
else:
self.logger.info("IPv6 VRF ID %d is configured" % vrf_id)
return 1
return VRF_CONFIGURED
def run_verify_test(self):
"""
@ -328,7 +359,8 @@ class TestIP6VrfMultiInst(VppTestCase):
capture = pg_if.get_capture(remark="interface is in VRF")
self.verify_capture(pg_if, capture)
elif pg_if in self.pg_not_in_vrf:
pg_if.assert_nothing_captured(remark="interface is not in VRF")
pg_if.assert_nothing_captured(remark="interface is not in VRF",
filter_out_fn=is_ipv6_misc_ext)
self.logger.debug("No capture for interface %s" % pg_if.name)
else:
raise Exception("Unknown interface: %s" % pg_if.name)
@ -342,13 +374,11 @@ class TestIP6VrfMultiInst(VppTestCase):
# Verify 1
for vrf_id in self.vrf_list:
self.assertEqual(self.verify_vrf(vrf_id), 1)
self.assertEqual(self.verify_vrf(vrf_id), VRF_CONFIGURED)
# Test 1
self.run_verify_test()
@unittest.skip("IPv6 FIB reset leads to crash of VPP - Jira ticket "
"https://jira.fd.io/browse/VPP-643")
def test_ip6_vrf_02(self):
""" IP6 VRF Multi-instance test 2 - reset 2 VRFs
"""
@ -358,46 +388,52 @@ class TestIP6VrfMultiInst(VppTestCase):
self.reset_vrf(2)
# Verify 2
# for vrf_id in self.vrf_deleted_list:
# self.assertEqual(self.verify_vrf(vrf_id), 0)
for vrf_id in self.vrf_reset_list:
self.assertEqual(self.verify_vrf(vrf_id), VRF_RESET)
for vrf_id in self.vrf_list:
self.assertEqual(self.verify_vrf(vrf_id), 1)
self.assertEqual(self.verify_vrf(vrf_id), VRF_CONFIGURED)
# Test 2
self.run_verify_test()
# Reset routes learned from ICMPv6 Neighbor Discovery
for vrf_id in self.vrf_reset_list:
self.reset_vrf(vrf_id)
def test_ip6_vrf_03(self):
""" IP6 VRF Multi-instance 3 - add 2 VRFs
"""
# Config 3
# Add 1 of deleted VRFs and 1 new VRF
# self.create_vrf_and_assign_interfaces(1)
# Add 1 of reset VRFs and 1 new VRF
self.create_vrf_and_assign_interfaces(1)
self.create_vrf_and_assign_interfaces(1, start=5)
# Verify 3
# for vrf_id in self.vrf_deleted_list:
# self.assertEqual(self.verify_vrf(vrf_id), 0)
for vrf_id in self.vrf_reset_list:
self.assertEqual(self.verify_vrf(vrf_id), VRF_RESET)
for vrf_id in self.vrf_list:
self.assertEqual(self.verify_vrf(vrf_id), 1)
self.assertEqual(self.verify_vrf(vrf_id), VRF_CONFIGURED)
# Test 3
self.run_verify_test()
@unittest.skip("IPv6 FIB reset leads to crash of VPP - Jira ticket "
"https://jira.fd.io/browse/VPP-643")
# Reset routes learned from ICMPv6 Neighbor Discovery
for vrf_id in self.vrf_reset_list:
self.reset_vrf(vrf_id)
def test_ip6_vrf_04(self):
""" IP6 VRF Multi-instance test 4 - reset 4 VRFs
"""
# Config 4
# Delete all VRFs (i.e. no VRF except VRF=0 created)
# Reset all VRFs (i.e. no VRF except VRF=0 created)
for i in range(len(self.vrf_list)):
self.reset_vrf(self.vrf_list[0])
# Verify 4
# for vrf_id in self.vrf_deleted_list:
# self.assertEqual(self.verify_vrf(vrf_id), 0)
for vrf_id in self.vrf_reset_list:
self.assertEqual(self.verify_vrf(vrf_id), VRF_RESET)
for vrf_id in self.vrf_list:
self.assertEqual(self.verify_vrf(vrf_id), 1)
self.assertEqual(self.verify_vrf(vrf_id), VRF_CONFIGURED)
# Test 4
self.run_verify_test()