-#!/usr/bin/env python
+#!/usr/bin/env python3
"""IP4 VRF Multi-instance Test Case HLD:
**NOTES:**
- higher number of pg-ip4 interfaces causes problems => only 15 pg-ip4 \
- interfaces in 5 VRFs are tested
+ interfaces in 5 VRFs are tested
- jumbo packets in configuration with 15 pg-ip4 interfaces leads to \
- problems too
+ problems too
**config 1**
- add 15 pg-ip4 interfaces
**verify 1**
- check VRF data by parsing output of ip_fib_dump API command
- - all packets received correctly in case of pg-ip4 interfaces in VRF
+ - all packets received correctly in case of pg-ip4 interfaces in the
+ same VRF
- no packet received in case of pg-ip4 interfaces not in VRF
+ - no packet received in case of pg-ip4 interfaces in different VRFs
**config 2**
- reset 2 VRFs
- send IP4 packets between all pg-ip4 interfaces in all VRF groups
**verify 2**
- - check VRF data by parsing output of ip_fib_dump API command
- - all packets received correctly in case of pg-ip4 interfaces in VRF
+ - all packets received correctly in case of pg-ip4 interfaces in the
+ same VRF
- no packet received in case of pg-ip4 interfaces not in VRF
+ - no packet received in case of pg-ip4 interfaces in different VRFs
**config 3**
- add 1 of reset VRFs and 1 new VRF
**verify 3**
- check VRF data by parsing output of ip_fib_dump API command
- - all packets received correctly in case of pg-ip4 interfaces in VRF
+ - all packets received correctly in case of pg-ip4 interfaces in the
+ same VRF
- no packet received in case of pg-ip4 interfaces not in VRF
+ - no packet received in case of pg-ip4 interfaces in different VRFs
**config 4**
- reset all created VRFs
**verify 4**
- check VRF data by parsing output of ip_fib_dump API command
- - all packets received correctly in case of pg-ip4 interfaces in VRF
+ - all packets received correctly in case of pg-ip4 interfaces in the
+ same VRF
- no packet received in case of pg-ip4 interfaces not in VRF
+ - no packet received in case of pg-ip4 interfaces in different VRFs
"""
import unittest
import random
import socket
+import scapy.compat
from scapy.packet import Raw
-from scapy.layers.l2 import Ether
-from scapy.layers.inet import IP, UDP, ARP
+from scapy.layers.l2 import Ether, ARP
+from scapy.layers.inet import IP, UDP
from framework import VppTestCase, VppTestRunner
from util import ppp
def is_ipv4_misc(p):
- """ Is packet one of uninteresting IPv4 broadcasts? """
+ """Is packet one of uninteresting IPv4 broadcasts?"""
if p.haslayer(ARP):
return True
return False
class TestIp4VrfMultiInst(VppTestCase):
- """ IP4 VRF Multi-instance Test Case """
+ """IP4 VRF Multi-instance Test Case"""
@classmethod
def setUpClass(cls):
try:
# Create pg interfaces
- cls.create_pg_interfaces(
- range(cls.nr_of_vrfs * cls.pg_ifs_per_vrf))
+ cls.create_pg_interfaces(range(cls.nr_of_vrfs * cls.pg_ifs_per_vrf))
# Packet flows mapping pg0 -> pg1, pg2 etc.
cls.flows = dict()
for i in range(len(cls.pg_interfaces)):
- multiplicand = i / cls.pg_ifs_per_vrf
+ multiplicand = i // cls.pg_ifs_per_vrf
pg_list = [
cls.pg_interfaces[multiplicand * cls.pg_ifs_per_vrf + j]
for j in range(cls.pg_ifs_per_vrf)
- if (multiplicand * cls.pg_ifs_per_vrf + j) != i]
+ if (multiplicand * cls.pg_ifs_per_vrf + j) != i
+ ]
cls.flows[cls.pg_interfaces[i]] = pg_list
# Packet sizes - jumbo packet (9018 bytes) skipped
# Create list of pg_interfaces in VRFs
cls.pg_in_vrf = list()
- # Create list of pg_interfaces not in BDs
+ # Create list of pg_interfaces not in VRFs
cls.pg_not_in_vrf = [pg_if for pg_if in cls.pg_interfaces]
# Create mapping of pg_interfaces to VRF IDs
- cls.pg_if_by_vrf_id = dict()
+ cls.pg_if_sets = dict()
for i in range(cls.nr_of_vrfs):
- vrf_id = i + 1
+ set_id = i + 1
pg_list = [
cls.pg_interfaces[i * cls.pg_ifs_per_vrf + j]
- for j in range(cls.pg_ifs_per_vrf)]
- cls.pg_if_by_vrf_id[vrf_id] = pg_list
+ for j in range(cls.pg_ifs_per_vrf)
+ ]
+ cls.pg_if_sets[set_id] = pg_list
except Exception:
super(TestIp4VrfMultiInst, cls).tearDownClass()
raise
+ @classmethod
+ def tearDownClass(cls):
+ super(TestIp4VrfMultiInst, cls).tearDownClass()
+
def setUp(self):
"""
Clear trace and packet infos before running each test.
Show various debug prints after each test.
"""
super(TestIp4VrfMultiInst, self).tearDown()
- if not self.vpp_dead:
- self.logger.info(self.vapi.ppcli("show ip fib"))
- self.logger.info(self.vapi.ppcli("show ip arp"))
+
+ def show_commands_at_teardown(self):
+ self.logger.info(self.vapi.ppcli("show ip fib"))
+ self.logger.info(self.vapi.ppcli("show ip4 neighbors"))
+
+ def _assign_interfaces(self, vrf_id, if_set_id):
+ for i in range(self.pg_ifs_per_vrf):
+ pg_if = self.pg_if_sets[if_set_id][i]
+ pg_if.set_table_ip4(vrf_id)
+ self.logger.info(
+ "pg-interface %s added to IPv4 VRF ID %d" % (pg_if.name, vrf_id)
+ )
+ if pg_if not in self.pg_in_vrf:
+ self.pg_in_vrf.append(pg_if)
+ if pg_if in self.pg_not_in_vrf:
+ self.pg_not_in_vrf.remove(pg_if)
+ pg_if.config_ip4()
+ pg_if.configure_ipv4_neighbors()
def create_vrf_and_assign_interfaces(self, count, start=1):
"""
- Create required number of FIB tables / VRFs, put 3 l2-pg interfaces
+ Create required number of FIB tables / VRFs, put 3 pg-ip4 interfaces
to every FIB table / VRF.
:param int count: Number of FIB tables / VRFs to be created.
for i in range(count):
vrf_id = i + start
- pg_if = self.pg_if_by_vrf_id[vrf_id][0]
- dest_addr = pg_if.local_ip4n
- dest_addr_len = 24
- self.vapi.ip_table_add_del(vrf_id, is_add=1)
- self.vapi.ip_add_del_route(
- dest_addr, dest_addr_len, pg_if.local_ip4n,
- table_id=vrf_id, is_multipath=1)
+ self.vapi.ip_table_add_del(is_add=1, table={"table_id": vrf_id})
self.logger.info("IPv4 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_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_ip4(vrf_id)
- self.logger.info("pg-interface %s added to IPv4 VRF ID %d"
- % (pg_if.name, vrf_id))
- if pg_if not in self.pg_in_vrf:
- self.pg_in_vrf.append(pg_if)
- if pg_if in self.pg_not_in_vrf:
- self.pg_not_in_vrf.remove(pg_if)
- pg_if.config_ip4()
- pg_if.configure_ipv4_neighbors()
+ self._assign_interfaces(vrf_id, vrf_id)
self.logger.debug(self.vapi.ppcli("show ip fib"))
- self.logger.debug(self.vapi.ppcli("show ip arp"))
+ self.logger.debug(self.vapi.ppcli("show ip4 neighbors"))
+
+ def create_vrf_by_id_and_assign_interfaces(self, set_id, vrf_id=0xFFFFFFFF):
+ """
+ Create a FIB table / VRF by vrf_id, put 3 pg-ip4 interfaces
+ to FIB table / VRF.
- def reset_vrf_and_remove_from_vrf_list(self, vrf_id):
+ :param int vrf_id: Required table ID / VRF ID. \
+ (Default value = 0xffffffff, ID will be selected automatically)
+ """
+ ret = self.vapi.ip_table_allocate(table={"table_id": vrf_id})
+ vrf_id = ret.table.table_id
+ self.logger.info("IPv4 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_reset_list:
+ self.vrf_reset_list.remove(vrf_id)
+ self._assign_interfaces(vrf_id, set_id)
+ self.logger.debug(self.vapi.ppcli("show ip fib"))
+ self.logger.debug(self.vapi.ppcli("show ip4 neighbors"))
+
+ return vrf_id
+
+ def reset_vrf_and_remove_from_vrf_list(self, vrf_id, if_set_id=None):
"""
Reset required FIB table / VRF and remove it from VRF list.
:param int vrf_id: The FIB table / VRF ID to be reset.
"""
- # self.vapi.reset_vrf(vrf_id, is_ipv6=0)
- self.vapi.reset_fib(vrf_id, is_ipv6=0)
+ if if_set_id is None:
+ if_set_id = vrf_id
+ self.vapi.ip_table_flush(table={"table_id": vrf_id})
if vrf_id in self.vrf_list:
self.vrf_list.remove(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]
+ pg_if = self.pg_if_sets[if_set_id][j]
pg_if.unconfig_ip4()
if pg_if in self.pg_in_vrf:
self.pg_in_vrf.remove(pg_if)
self.pg_not_in_vrf.append(pg_if)
self.logger.info("IPv4 VRF ID %d reset finished" % vrf_id)
self.logger.debug(self.vapi.ppcli("show ip fib"))
- self.logger.debug(self.vapi.ppcli("show ip arp"))
- self.vapi.ip_table_add_del(vrf_id, is_add=0)
+ self.logger.debug(self.vapi.ppcli("show ip neighbors"))
+ self.vapi.ip_table_add_del(is_add=0, table={"table_id": vrf_id})
def create_stream(self, src_if, packet_sizes):
"""
src_host = random.choice(src_hosts)
pkt_info = self.create_packet_info(src_if, dst_if)
payload = self.info_to_payload(pkt_info)
- p = (Ether(dst=src_if.local_mac, src=src_host.mac) /
- IP(src=src_host.ip4, dst=dst_host.ip4) /
- UDP(sport=1234, dport=1234) /
- Raw(payload))
+ p = (
+ Ether(dst=src_if.local_mac, src=src_host.mac)
+ / IP(src=src_host.ip4, dst=dst_host.ip4)
+ / UDP(sport=1234, dport=1234)
+ / Raw(payload)
+ )
pkt_info.data = p.copy()
size = random.choice(packet_sizes)
self.extend_packet(p, size)
pkts.append(p)
- self.logger.debug("Input stream created for port %s. Length: %u pkt(s)"
- % (src_if.name, len(pkts)))
+ self.logger.debug(
+ "Input stream created for port %s. Length: %u pkt(s)"
+ % (src_if.name, len(pkts))
+ )
+ return pkts
+
+ def create_stream_crosswise_vrf(self, src_if, vrf_id, packet_sizes):
+ """
+ Create input packet stream for negative test for leaking across
+ different VRFs for defined interface using hosts list.
+
+ :param object src_if: Interface to create packet stream for.
+ :param int vrf_id: The FIB table / VRF ID where src_if is assigned.
+ :param list packet_sizes: List of required packet sizes.
+ :return: Stream of packets.
+ """
+ pkts = []
+ src_hosts = src_if.remote_hosts
+ vrf_lst = list(self.vrf_list)
+ vrf_lst.remove(vrf_id)
+ for vrf in vrf_lst:
+ for dst_if in self.pg_if_sets[vrf]:
+ for dst_host in dst_if.remote_hosts:
+ src_host = random.choice(src_hosts)
+ pkt_info = self.create_packet_info(src_if, dst_if)
+ payload = self.info_to_payload(pkt_info)
+ p = (
+ Ether(dst=src_if.local_mac, src=src_host.mac)
+ / IP(src=src_host.ip4, dst=dst_host.ip4)
+ / UDP(sport=1234, dport=1234)
+ / Raw(payload)
+ )
+ pkt_info.data = p.copy()
+ size = random.choice(packet_sizes)
+ self.extend_packet(p, size)
+ pkts.append(p)
+ self.logger.debug(
+ "Input stream created for port %s. Length: %u pkt(s)"
+ % (src_if.name, len(pkts))
+ )
return pkts
def verify_capture(self, pg_if, capture):
try:
ip = packet[IP]
udp = packet[UDP]
- payload_info = self.payload_to_info(str(packet[Raw]))
+ payload_info = self.payload_to_info(packet[Raw])
packet_index = payload_info.index
self.assertEqual(payload_info.dst, dst_sw_if_index)
- self.logger.debug("Got packet on port %s: src=%u (id=%u)" %
- (pg_if.name, payload_info.src, packet_index))
+ self.logger.debug(
+ "Got packet on port %s: src=%u (id=%u)"
+ % (pg_if.name, payload_info.src, packet_index)
+ )
next_info = self.get_next_packet_info_for_interface2(
- payload_info.src, dst_sw_if_index,
- last_info[payload_info.src])
+ payload_info.src, dst_sw_if_index, last_info[payload_info.src]
+ )
last_info[payload_info.src] = next_info
self.assertIsNotNone(next_info)
self.assertEqual(packet_index, next_info.index)
raise
for i in self.pg_interfaces:
remaining_packet = self.get_next_packet_info_for_interface2(
- i, dst_sw_if_index, last_info[i.sw_if_index])
+ i, dst_sw_if_index, last_info[i.sw_if_index]
+ )
self.assertIsNone(
remaining_packet,
- "Port %u: Packet expected from source %u didn't arrive" %
- (dst_sw_if_index, i.sw_if_index))
+ "Port %u: Packet expected from source %u didn't arrive"
+ % (dst_sw_if_index, i.sw_if_index),
+ )
- def verify_vrf(self, vrf_id):
+ def verify_vrf(self, vrf_id, if_set_id=None):
"""
Check if the FIB table / VRF ID is configured.
:param int vrf_id: The FIB table / VRF ID to be verified.
:return: 1 if the FIB table / VRF ID is configured, otherwise return 0.
"""
- ip_fib_dump = self.vapi.ip_fib_dump()
- vrf_exist = False
+ if if_set_id is None:
+ if_set_id = vrf_id
+ ip_fib_dump = self.vapi.ip_route_dump(vrf_id)
+ vrf_exist = len(ip_fib_dump)
vrf_count = 0
for ip_fib_details in ip_fib_dump:
- if ip_fib_details.table_id == vrf_id:
- if not vrf_exist:
- vrf_exist = True
- addr = socket.inet_ntoa(ip_fib_details.address)
- found = False
- for pg_if in self.pg_if_by_vrf_id[vrf_id]:
- if found:
+ addr = ip_fib_details.route.prefix.network_address
+ found = False
+ for pg_if in self.pg_if_sets[if_set_id]:
+ if found:
+ break
+ for host in pg_if.remote_hosts:
+ if str(addr) == host.ip4:
+ vrf_count += 1
+ found = True
break
- for host in pg_if.remote_hosts:
- if str(addr) == str(host.ip4):
- vrf_count += 1
- found = True
- break
if not vrf_exist and vrf_count == 0:
self.logger.info("IPv4 VRF ID %d is not configured" % vrf_id)
return VRFState.not_configured
def run_verify_test(self):
"""
- Create packet streams for all configured l2-pg interfaces, send all \
+ Create packet streams for all configured pg interfaces, send all \
prepared packet streams and verify that:
- - all packets received correctly on all pg-l2 interfaces assigned
- to bridge domains
- - no packet received on all pg-l2 interfaces not assigned to bridge
- domains
-
- :raise RuntimeError: If no packet captured on l2-pg interface assigned
- to the bridge domain or if any packet is captured on l2-pg
- interface not assigned to the bridge domain.
+ - all packets received correctly on all pg-ip4 interfaces assigned
+ to VRFs
+ - no packet received on all pg-ip4 interfaces not assigned to VRFs
+
+ :raise RuntimeError: If no packet captured on pg-ip4 interface assigned
+ to VRF or if any packet is captured on pg-ip4 interface not
+ assigned to VRF.
"""
# Test
# Create incoming packet streams for packet-generator interfaces
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",
- filter_out_fn=is_ipv4_misc)
+ pg_if.assert_nothing_captured(
+ remark="interface is not in VRF", filter_out_fn=is_ipv4_misc
+ )
self.logger.debug("No capture for interface %s" % pg_if.name)
else:
raise Exception("Unknown interface: %s" % pg_if.name)
- def test_ip4_vrf_01(self):
- """ IP4 VRF Multi-instance test 1 - create 4 VRFs
+ def run_crosswise_vrf_test(self):
"""
+ Create packet streams for every pg-ip4 interface in VRF towards all
+ pg-ip4 interfaces in other VRFs, send all prepared packet streams and
+ verify that:
+
+ - no packet received on all configured pg-ip4 interfaces
+
+ :raise RuntimeError: If any packet is captured on any pg-ip4 interface.
+ """
+ # Test
+ # Create incoming packet streams for packet-generator interfaces
+ for vrf_id in self.vrf_list:
+ for pg_if in self.pg_if_sets[vrf_id]:
+ pkts = self.create_stream_crosswise_vrf(
+ pg_if, vrf_id, self.pg_if_packet_sizes
+ )
+ pg_if.add_stream(pkts)
+
+ # Enable packet capture and start packet sending
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ # Verify
+ # Verify outgoing packet streams per packet-generator interface
+ for pg_if in self.pg_interfaces:
+ pg_if.assert_nothing_captured(
+ remark="interface is in other VRF", filter_out_fn=is_ipv4_misc
+ )
+ self.logger.debug("No capture for interface %s" % pg_if.name)
+
+ def test_ip4_vrf_01(self):
+ """IP4 VRF Multi-instance test 1 - create 4 VRFs"""
# Config 1
# Create 4 VRFs
self.create_vrf_and_assign_interfaces(4)
# Verify 1
for vrf_id in self.vrf_list:
- self.assert_equal(self.verify_vrf(vrf_id),
- VRFState.configured, VRFState)
+ self.assert_equal(self.verify_vrf(vrf_id), VRFState.configured, VRFState)
# Test 1
self.run_verify_test()
+ self.run_crosswise_vrf_test()
def test_ip4_vrf_02(self):
- """ IP4 VRF Multi-instance test 2 - reset 2 VRFs
- """
+ """IP4 VRF Multi-instance test 2 - reset 2 VRFs"""
# Config 2
# Reset 2 VRFs
self.reset_vrf_and_remove_from_vrf_list(1)
# Verify 2
for vrf_id in self.vrf_reset_list:
- self.assert_equal(self.verify_vrf(vrf_id),
- VRFState.reset, VRFState)
+ self.assert_equal(self.verify_vrf(vrf_id), VRFState.reset, VRFState)
for vrf_id in self.vrf_list:
- self.assert_equal(self.verify_vrf(vrf_id),
- VRFState.configured, VRFState)
+ self.assert_equal(self.verify_vrf(vrf_id), VRFState.configured, VRFState)
# Test 2
self.run_verify_test()
+ self.run_crosswise_vrf_test()
def test_ip4_vrf_03(self):
- """ IP4 VRF Multi-instance 3 - add 2 VRFs
- """
+ """IP4 VRF Multi-instance 3 - add 2 VRFs"""
# Config 3
# Add 1 of reset VRFs and 1 new VRF
self.create_vrf_and_assign_interfaces(1)
# Verify 3
for vrf_id in self.vrf_reset_list:
- self.assert_equal(self.verify_vrf(vrf_id),
- VRFState.reset, VRFState)
+ self.assert_equal(self.verify_vrf(vrf_id), VRFState.reset, VRFState)
for vrf_id in self.vrf_list:
- self.assert_equal(self.verify_vrf(vrf_id),
- VRFState.configured, VRFState)
+ self.assert_equal(self.verify_vrf(vrf_id), VRFState.configured, VRFState)
# Test 3
self.run_verify_test()
+ self.run_crosswise_vrf_test()
def test_ip4_vrf_04(self):
- """ IP4 VRF Multi-instance test 4 - reset 4 VRFs
- """
+ """IP4 VRF Multi-instance test 4 - reset 4 VRFs"""
# Config 4
# Reset all VRFs (i.e. no VRF except VRF=0 configured)
for i in range(len(self.vrf_list)):
# Verify 4
for vrf_id in self.vrf_reset_list:
- self.assert_equal(self.verify_vrf(vrf_id),
- VRFState.reset, VRFState)
+ self.assert_equal(self.verify_vrf(vrf_id), VRFState.reset, VRFState)
vrf_list_length = len(self.vrf_list)
self.assertEqual(
- vrf_list_length, 0,
- "List of configured VRFs is not empty: %s != 0" % vrf_list_length)
+ vrf_list_length,
+ 0,
+ "List of configured VRFs is not empty: %s != 0" % vrf_list_length,
+ )
# Test 4
self.run_verify_test()
+ self.run_crosswise_vrf_test()
+
+ def test_ip4_vrf_05(self):
+ """IP4 VRF Multi-instance test 5 - id allocation"""
+ # Config 5
+ # Create several VRFs
+ # Set vrf_id manually first
+ self.create_vrf_by_id_and_assign_interfaces(1, 1)
+ # Set vrf_id automatically a few times
+ auto_vrf_id = [
+ self.create_vrf_by_id_and_assign_interfaces(i) for i in range(2, 5)
+ ]
+
+ # Verify 5
+ self.assert_equal(self.verify_vrf(1, 1), VRFState.configured, VRFState)
+ for i, vrf in enumerate(auto_vrf_id):
+ self.assert_equal(
+ self.verify_vrf(vrf, i + 2), VRFState.configured, VRFState
+ )
+
+ # Test 5
+ self.run_verify_test()
+
+ # Config 5.1
+ # Reset VRFs
+ self.reset_vrf_and_remove_from_vrf_list(1)
+ for i, vrf in enumerate(auto_vrf_id):
+ self.reset_vrf_and_remove_from_vrf_list(vrf, i + 2)
+
+ # Verify 5.1
+ self.assert_equal(self.verify_vrf(1, 1), VRFState.reset, VRFState)
+ for i, vrf in enumerate(auto_vrf_id):
+ self.assert_equal(self.verify_vrf(vrf, i + 2), VRFState.reset, VRFState)
+
+ vrf_list_length = len(self.vrf_list)
+ self.assertEqual(
+ vrf_list_length,
+ 0,
+ "List of configured VRFs is not empty: %s != 0" % vrf_list_length,
+ )
-if __name__ == '__main__':
+if __name__ == "__main__":
unittest.main(testRunner=VppTestRunner)
Code Review / vpp.git / blobdiff