e23c99ec00
Change mac_entry layout in l2_macs_event API message so the MAC entry can be either add, delete or move where the sw_if_index of an existing MAC entry changed. Also added a 8-bit flags field in mac_entry for any future expansion. Change-Id: I3bf9e1cf2556f2938202025a5d0772c2ce2fc99f Signed-off-by: John Lo <loj@cisco.com>
526 lines
18 KiB
Python
526 lines
18 KiB
Python
#!/usr/bin/env python
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"""L2 FIB Test Case HLD:
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**config 1**
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- add 4 pg-l2 interfaces
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- configure them into l2bd
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- configure 100 MAC entries in L2 fib - 25 MACs per interface
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- L2 MAC learning and unknown unicast flooding disabled in l2bd
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- configure 100 MAC entries in L2 fib - 25 MACs per interface
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**test 1**
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- send L2 MAC frames between all 4 pg-l2 interfaces for all of 100 MAC \
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entries in the FIB
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**verify 1**
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- all packets received correctly
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**config 2**
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- delete 12 MAC entries - 3 MACs per interface
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**test 2a**
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- send L2 MAC frames between all 4 pg-l2 interfaces for non-deleted MAC \
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entries
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**verify 2a**
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- all packets received correctly
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**test 2b**
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- send L2 MAC frames between all 4 pg-l2 interfaces for all of 12 deleted \
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MAC entries
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**verify 2b**
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- no packet received on all 4 pg-l2 interfaces
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**config 3**
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- configure new 100 MAC entries in L2 fib - 25 MACs per interface
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**test 3**
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- send L2 MAC frames between all 4 pg-l2 interfaces for all of 188 MAC \
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entries in the FIB
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**verify 3**
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- all packets received correctly
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**config 4**
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- delete 160 MAC entries, 40 MACs per interface
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**test 4a**
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- send L2 MAC frames between all 4 pg-l2 interfaces for all of 28 \
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non-deleted MAC entries
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**verify 4a**
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- all packets received correctly
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**test 4b**
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- try send L2 MAC frames between all 4 pg-l2 interfaces for all of 172 \
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deleted MAC entries
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**verify 4b**
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- no packet received on all 4 pg-l2 interfaces
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"""
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import unittest
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import random
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from scapy.packet import Raw
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from scapy.layers.l2 import Ether
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from scapy.layers.inet import IP, UDP
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from framework import VppTestCase, VppTestRunner
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from util import Host, ppp
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# from src/vnet/l2/l2_fib.h
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MAC_EVENT_ACTION_ADD = 0
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MAC_EVENT_ACTION_DELETE = 1
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MAC_EVENT_ACTION_MOVE = 2
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class TestL2fib(VppTestCase):
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""" L2 FIB Test Case """
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@classmethod
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def bd_ifs(cls, bd_id):
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return range((bd_id - 1) * cls.n_ifs_per_bd, bd_id * cls.n_ifs_per_bd)
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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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:var int bd_id: Bridge domain ID.
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"""
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super(TestL2fib, cls).setUpClass()
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try:
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n_brs = cls.n_brs = range(1, 3)
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cls.n_ifs_per_bd = 4
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n_ifs = range(cls.n_ifs_per_bd * len(cls.n_brs))
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# Create 4 pg interfaces
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cls.create_pg_interfaces(n_ifs)
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cls.flows = dict()
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for bd_id in n_brs:
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# Packet flows mapping pg0 -> pg1, pg2, pg3 etc.
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ifs = cls.bd_ifs(bd_id)
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for j in ifs:
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cls.flows[cls.pg_interfaces[j]] = [
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cls.pg_interfaces[x] for x in ifs if x != j]
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# Packet sizes
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cls.pg_if_packet_sizes = [64, 512, 1518, 9018]
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for bd_id in n_brs:
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# Create BD with MAC learning and unknown unicast flooding
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# disabled and put interfaces to this BD
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cls.vapi.bridge_domain_add_del(
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bd_id=bd_id, uu_flood=0, learn=0)
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ifs = [cls.pg_interfaces[i] for i in cls.bd_ifs(bd_id)]
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for pg_if in ifs:
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cls.vapi.sw_interface_set_l2_bridge(pg_if.sw_if_index,
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bd_id=bd_id)
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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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except Exception:
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super(TestL2fib, cls).tearDownClass()
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raise
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def setUp(self):
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super(TestL2fib, self).setUp()
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self.reset_packet_infos()
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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(TestL2fib, self).tearDown()
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if not self.vpp_dead:
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self.logger.info(self.vapi.ppcli("show l2fib verbose"))
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for bd_id in self.n_brs:
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self.logger.info(self.vapi.ppcli("show bridge-domain %s detail"
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% bd_id))
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def create_hosts(self, n_hosts_per_if, subnet):
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"""
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Create required number of host MAC addresses and distribute them among
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interfaces. Create host IPv4 address for every host MAC address.
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:param int n_hosts_per_if: Number of per interface hosts to
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create MAC/IPv4 addresses for.
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"""
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hosts = dict()
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for pg_if in self.pg_interfaces:
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swif = pg_if.sw_if_index
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def mac(j): return "00:00:%02x:ff:%02x:%02x" % (subnet, swif, j)
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def ip(j): return "172.%02u.1%02x.%u" % (subnet, swif, j)
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def h(j): return Host(mac(j), ip(j))
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hosts[swif] = [h(j) for j in range(n_hosts_per_if)]
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return hosts
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def split_hosts(self, hosts, n):
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splits = dict()
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for pg_if in self.pg_interfaces:
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swif = pg_if.sw_if_index
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splits[swif] = hosts[swif][:n]
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hosts[swif] = hosts[swif][n:]
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return splits
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def learn_hosts(self, bd_id, hosts):
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"""
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Create and send per interface L2 MAC broadcast packet stream to
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let the bridge domain learn these MAC addresses.
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:param int bd_id: BD to teach
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:param dict hosts: dict of hosts per interface
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"""
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self.vapi.bridge_flags(bd_id, 1, 1)
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ifs = [self.pg_interfaces[i] for i in self.bd_ifs(bd_id)]
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for pg_if in ifs:
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swif = pg_if.sw_if_index
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packets = [Ether(dst="ff:ff:ff:ff:ff:ff", src=host.mac)
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for host in hosts[swif]]
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pg_if.add_stream(packets)
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self.logger.info("Sending broadcast eth frames for MAC learning")
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self.pg_start()
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def config_l2_fib_entries(self, bd_id, hosts):
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"""
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Config required number of L2 FIB entries.
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:param int bd_id: BD's id
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:param int count: Number of L2 FIB entries to be created.
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:param int start: Starting index of the host list. (Default value = 0)
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"""
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ifs = [self.pg_interfaces[i] for i in self.bd_ifs(bd_id)]
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for pg_if in ifs:
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swif = pg_if.sw_if_index
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for host in hosts[swif]:
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self.vapi.l2fib_add_del(
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host.mac, bd_id, swif, static_mac=1)
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def delete_l2_fib_entry(self, bd_id, hosts):
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"""
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Delete required number of L2 FIB entries.
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:param int count: Number of L2 FIB entries to be created.
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"""
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ifs = [self.pg_interfaces[i] for i in self.bd_ifs(bd_id)]
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for pg_if in ifs:
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swif = pg_if.sw_if_index
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for host in hosts[swif]:
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self.vapi.l2fib_add_del(
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host.mac, bd_id, swif, is_add=0)
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def flush_int(self, swif, learned_hosts):
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"""
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Flush swif L2 FIB entries.
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:param int swif: sw if index.
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"""
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flushed = dict()
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self.vapi.l2fib_flush_int(swif)
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flushed[swif] = learned_hosts[swif]
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learned_hosts[swif] = []
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return flushed
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def flush_bd(self, bd_id, learned_hosts):
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"""
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Flush bd_id L2 FIB entries.
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:param int bd_id: Bridge Domain id.
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"""
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self.vapi.l2fib_flush_bd(bd_id)
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flushed = dict()
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ifs = [self.pg_interfaces[i] for i in self.bd_ifs(bd_id)]
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for pg_if in ifs:
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swif = pg_if.sw_if_index
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flushed[swif] = learned_hosts[swif]
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learned_hosts[swif] = []
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return flushed
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def flush_all(self):
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"""
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Flush All L2 FIB entries.
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"""
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self.vapi.l2fib_flush_all()
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def create_stream(self, src_if, packet_sizes, if_src_hosts, if_dst_hosts):
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"""
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Create input packet stream for defined interface using hosts or
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deleted_hosts list.
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:param object src_if: Interface to create packet stream for.
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:param list packet_sizes: List of required packet sizes.
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:param boolean deleted: Set to True if deleted_hosts list required.
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:return: Stream of packets.
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"""
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src_hosts = if_src_hosts[src_if.sw_if_index]
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if not src_hosts:
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return []
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pkts = []
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for dst_if in self.flows[src_if]:
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dst_swif = dst_if.sw_if_index
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if dst_swif not in if_dst_hosts:
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continue
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dst_hosts = if_dst_hosts[dst_swif]
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for dst_host in dst_hosts:
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src_host = random.choice(src_hosts)
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pkt_info = self.create_packet_info(src_if, dst_if)
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payload = self.info_to_payload(pkt_info)
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p = (Ether(dst=dst_host.mac, src=src_host.mac) /
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IP(src=src_host.ip4, dst=dst_host.ip4) /
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UDP(sport=1234, dport=1234) /
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Raw(payload))
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pkt_info.data = p.copy()
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size = random.choice(packet_sizes)
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self.extend_packet(p, size)
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pkts.append(p)
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return pkts
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def verify_capture(self, pg_if, capture):
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"""
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Verify captured input packet stream for defined interface.
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:param object pg_if: Interface to verify captured packet stream for.
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:param list capture: Captured packet stream.
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"""
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last_info = dict()
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for i in self.pg_interfaces:
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last_info[i.sw_if_index] = None
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dst_sw_if_index = pg_if.sw_if_index
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for packet in capture:
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payload_info = self.payload_to_info(str(packet[Raw]))
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try:
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ip = packet[IP]
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udp = packet[UDP]
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packet_index = payload_info.index
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self.assertEqual(payload_info.dst, dst_sw_if_index)
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self.logger.debug("Got packet on port %s: src=%u (id=%u)" %
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(pg_if.name, payload_info.src, packet_index))
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next_info = self.get_next_packet_info_for_interface2(
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payload_info.src, dst_sw_if_index,
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last_info[payload_info.src])
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last_info[payload_info.src] = next_info
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self.assertTrue(next_info is not None)
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self.assertEqual(packet_index, next_info.index)
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saved_packet = next_info.data
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# Check standard fields
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self.assertEqual(ip.src, saved_packet[IP].src)
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self.assertEqual(ip.dst, saved_packet[IP].dst)
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self.assertEqual(udp.sport, saved_packet[UDP].sport)
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self.assertEqual(udp.dport, saved_packet[UDP].dport)
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except:
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self.logger.error(ppp("Unexpected or invalid packet:", packet))
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raise
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for i in self.pg_interfaces:
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remaining_packet = self.get_next_packet_info_for_interface2(
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i, dst_sw_if_index, last_info[i.sw_if_index])
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self.assertTrue(
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remaining_packet is None,
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"Port %u: Packet expected from source %u didn't arrive" %
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(dst_sw_if_index, i.sw_if_index))
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def run_verify_test(self, bd_id, src_hosts, dst_hosts):
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# Test
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# Create incoming packet streams for packet-generator interfaces
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self.reset_packet_infos()
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ifs = [self.pg_interfaces[i] for i in self.bd_ifs(bd_id)]
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for i in ifs:
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pkts = self.create_stream(
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i, self.pg_if_packet_sizes,
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if_src_hosts=src_hosts,
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if_dst_hosts=dst_hosts)
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if pkts:
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i.add_stream(pkts)
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self.vapi.bridge_flags(bd_id, 0, 1)
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# Enable packet capture and start packet sending
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self.pg_enable_capture(ifs)
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self.pg_start()
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# Verify
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# Verify outgoing packet streams per packet-generator interface
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for i in ifs:
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if not dst_hosts[i.sw_if_index]:
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continue
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capture = i.get_capture()
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self.logger.info("Verifying capture on interface %s" % i.name)
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self.verify_capture(i, capture)
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def run_verify_negat_test(self, bd_id, src_hosts, dst_hosts):
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# Test
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# Create incoming packet streams for packet-generator interfaces for
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# deleted MAC addresses
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self.reset_packet_infos()
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ifs = [self.pg_interfaces[i] for i in self.bd_ifs(bd_id)]
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for i in ifs:
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pkts = self.create_stream(
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i, self.pg_if_packet_sizes,
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if_src_hosts=src_hosts,
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if_dst_hosts=dst_hosts)
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if pkts:
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i.add_stream(pkts)
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self.vapi.bridge_flags(bd_id, 0, 1)
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# Enable packet capture and start packet sending
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self.pg_enable_capture(ifs)
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self.pg_start()
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# Verify
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# Verify outgoing packet streams per packet-generator interface
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timeout = 1
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for i in ifs:
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i.get_capture(0, timeout=timeout)
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i.assert_nothing_captured(remark="outgoing interface")
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timeout = 0.1
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def test_l2_fib_program100(self):
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""" L2 FIB - program 100 MACs
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"""
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bd_id = 1
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hosts = self.create_hosts(100, subnet=17)
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self.config_l2_fib_entries(bd_id, hosts)
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self.run_verify_test(bd_id, hosts, hosts)
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def test_l2_fib_delete12(self):
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""" L2 FIB - program 100 + delete 12 MACs
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"""
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bd_id = 1
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hosts = self.create_hosts(100, subnet=17)
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self.config_l2_fib_entries(bd_id, hosts)
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del_hosts = self.split_hosts(hosts, 12)
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self.delete_l2_fib_entry(bd_id, del_hosts)
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self.run_verify_test(bd_id, hosts, hosts)
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self.run_verify_negat_test(bd_id, hosts, del_hosts)
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def test_l2_fib_add100_add100(self):
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""" L2 FIB - program 100 + 100 MACs
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"""
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bd_id = 1
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hosts = self.create_hosts(100, subnet=17)
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self.config_l2_fib_entries(bd_id, hosts)
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hosts2 = self.create_hosts(100, subnet=22)
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self.config_l2_fib_entries(bd_id, hosts2)
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self.run_verify_test(bd_id, hosts, hosts2)
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def test_l2_fib_program10_learn10(self):
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""" L2 FIB - Program 10 MACs, learn 10
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"""
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hosts = self.create_hosts(20, subnet=35)
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lhosts = self.split_hosts(hosts, 10)
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bd1 = 1
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bd2 = 2
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self.learn_hosts(bd1, lhosts)
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self.learn_hosts(bd2, lhosts)
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self.config_l2_fib_entries(bd1, hosts)
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self.config_l2_fib_entries(bd2, hosts)
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self.run_verify_test(bd1, lhosts, hosts)
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self.run_verify_test(bd2, lhosts, hosts)
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def test_l2_fib_flush_int(self):
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""" L2 FIB - flush interface
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"""
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hosts = self.create_hosts(20, subnet=36)
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lhosts = self.split_hosts(hosts, 10)
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bd1 = 1
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self.learn_hosts(bd1, lhosts)
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self.config_l2_fib_entries(bd1, hosts)
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self.run_verify_test(bd1, lhosts, hosts)
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flushed = self.flush_int(self.pg_interfaces[0].sw_if_index, lhosts)
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self.run_verify_test(bd1, hosts, lhosts)
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self.run_verify_negat_test(bd1, hosts, flushed)
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def test_l2_fib_flush_bd(self):
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""" L2 FIB - flush BD
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"""
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hosts = self.create_hosts(20, subnet=37)
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lhosts = self.split_hosts(hosts, 10)
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bd1 = 1
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self.learn_hosts(bd1, lhosts)
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self.config_l2_fib_entries(bd1, hosts)
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self.run_verify_test(bd1, lhosts, hosts)
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flushed = self.flush_bd(bd1, lhosts)
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self.run_verify_negat_test(bd1, hosts, flushed)
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def test_l2_fib_flush_all(self):
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""" L2 FIB - flush all
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"""
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hosts = self.create_hosts(20, subnet=38)
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lhosts = self.split_hosts(hosts, 10)
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bd1 = 1
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bd2 = 2
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self.learn_hosts(bd1, lhosts)
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self.learn_hosts(bd2, lhosts)
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self.config_l2_fib_entries(bd1, hosts)
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self.config_l2_fib_entries(bd2, hosts)
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self.run_verify_test(bd1, hosts, lhosts)
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self.run_verify_test(bd2, hosts, lhosts)
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self.flush_all()
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self.run_verify_negat_test(bd1, hosts, lhosts)
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self.run_verify_negat_test(bd2, hosts, lhosts)
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def test_l2_fib_mac_learn_evs(self):
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""" L2 FIB - mac learning events
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"""
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bd1 = 1
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hosts = self.create_hosts(10, subnet=39)
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self.vapi.want_macs_learn_events()
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self.learn_hosts(bd1, hosts)
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self.sleep(1)
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self.logger.info(self.vapi.ppcli("show l2fib"))
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evs = self.vapi.collect_events()
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learned_macs = {
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e.mac[i].mac_addr for e in evs for i in range(e.n_macs)
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if e.mac[i].action == MAC_EVENT_ACTION_ADD}
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macs = {h.bin_mac for swif in self.bd_ifs(bd1)
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for h in hosts[self.pg_interfaces[swif].sw_if_index]}
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self.vapi.want_macs_learn_events(enable_disable=0)
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self.assertEqual(len(learned_macs ^ macs), 0)
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|
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def test_l2_fib_macs_learn_max(self):
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""" L2 FIB - mac learning max macs in event
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"""
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bd1 = 1
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hosts = self.create_hosts(10, subnet=40)
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ev_macs = 1
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self.vapi.want_macs_learn_events(max_macs_in_event=ev_macs)
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self.learn_hosts(bd1, hosts)
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|
|
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self.sleep(1)
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self.logger.info(self.vapi.ppcli("show l2fib"))
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evs = self.vapi.collect_events()
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self.vapi.want_macs_learn_events(enable_disable=0)
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|
|
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self.assertGreater(len(evs), 0)
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learned_macs = {
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e.mac[i].mac_addr for e in evs for i in range(e.n_macs)
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if e.mac[i].action == MAC_EVENT_ACTION_ADD}
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macs = {h.bin_mac for swif in self.bd_ifs(bd1)
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for h in hosts[self.pg_interfaces[swif].sw_if_index]}
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|
|
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for e in evs:
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self.assertLess(len(e), ev_macs * 10)
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self.assertEqual(len(learned_macs ^ macs), 0)
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|
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|
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if __name__ == '__main__':
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unittest.main(testRunner=VppTestRunner)
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