from scapy.packet import Raw
from six import moves
+from framework import tag_fixme_vpp_workers
from framework import VppTestCase, VppTestRunner
from util import ppp
from vpp_ip_route import VppIpRoute, VppRoutePath, VppIpMRoute, \
VppMRoutePath, VppMplsIpBind, \
VppMplsTable, VppIpTable, FibPathType, find_route, \
VppIpInterfaceAddress, find_route_in_dump, find_mroute_in_dump
-from vpp_ip import VppIpPuntPolicer, VppIpPuntRedirect
+from vpp_ip import VppIpPuntPolicer, VppIpPuntRedirect, VppIpPathMtu
from vpp_sub_interface import VppSubInterface, VppDot1QSubint, VppDot1ADSubint
from vpp_papi import VppEnum
from vpp_neighbor import VppNeighbor
from vpp_lo_interface import VppLoInterface
-from vpp_policer import VppPolicer
+from vpp_policer import VppPolicer, PolicerAction
NUM_PKTS = 67
self.send_and_expect(self.pg0, pkts, self.pg1)
-class TestIPPunt(VppTestCase):
- """ IPv4 Punt Police/Redirect """
-
- @classmethod
- def setUpClass(cls):
- super(TestIPPunt, cls).setUpClass()
-
- @classmethod
- def tearDownClass(cls):
- super(TestIPPunt, cls).tearDownClass()
-
- def setUp(self):
- super(TestIPPunt, self).setUp()
+class IPPuntSetup(object):
+ """ Setup for IPv4 Punt Police/Redirect """
+ def punt_setup(self):
self.create_pg_interfaces(range(4))
for i in self.pg_interfaces:
i.config_ip4()
i.resolve_arp()
- def tearDown(self):
- super(TestIPPunt, self).tearDown()
- for i in self.pg_interfaces:
- i.unconfig_ip4()
- i.admin_down()
-
- def test_ip_punt(self):
- """ IP punt police and redirect """
-
# use UDP packet that have a port we need to explicitly
# register to get punted.
pt_l4 = VppEnum.vl_api_punt_type_t.PUNT_API_TYPE_L4
self.vapi.set_punt(is_add=1, punt=punt_udp)
- p = (Ether(src=self.pg0.remote_mac,
- dst=self.pg0.local_mac) /
- IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) /
- UDP(sport=1234, dport=1234) /
- Raw(b'\xa5' * 100))
+ self.pkt = (Ether(src=self.pg0.remote_mac,
+ dst=self.pg0.local_mac) /
+ IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) /
+ UDP(sport=1234, dport=1234) /
+ Raw(b'\xa5' * 100))
- pkts = p * 1025
+ def punt_teardown(self):
+ for i in self.pg_interfaces:
+ i.unconfig_ip4()
+ i.admin_down()
+
+
+class TestIPPunt(IPPuntSetup, VppTestCase):
+ """ IPv4 Punt Police/Redirect """
+
+ def setUp(self):
+ super(TestIPPunt, self).setUp()
+ super(TestIPPunt, self).punt_setup()
+
+ def tearDown(self):
+ super(TestIPPunt, self).punt_teardown()
+ super(TestIPPunt, self).tearDown()
+
+ def test_ip_punt(self):
+ """ IP punt police and redirect """
+
+ pkts = self.pkt * 1025
#
# Configure a punt redirect via pg1.
# but not equal to the number sent, since some were policed
#
rx = self.pg1._get_capture(1)
+
+ stats = policer.get_stats()
+
+ # Single rate policer - expect conform, violate but no exceed
+ self.assertGreater(stats['conform_packets'], 0)
+ self.assertEqual(stats['exceed_packets'], 0)
+ self.assertGreater(stats['violate_packets'], 0)
+
self.assertGreater(len(rx), 0)
self.assertLess(len(rx), len(pkts))
self.assertEqual(str(punts[2].punt.nh), '0.0.0.0')
+class TestIPPuntHandoff(IPPuntSetup, VppTestCase):
+ """ IPv4 Punt Policer thread handoff """
+ vpp_worker_count = 2
+
+ def setUp(self):
+ super(TestIPPuntHandoff, self).setUp()
+ super(TestIPPuntHandoff, self).punt_setup()
+
+ def tearDown(self):
+ super(TestIPPuntHandoff, self).punt_teardown()
+ super(TestIPPuntHandoff, self).tearDown()
+
+ def test_ip_punt_policer_handoff(self):
+ """ IP4 punt policer thread handoff """
+ pkts = self.pkt * NUM_PKTS
+
+ #
+ # Configure a punt redirect via pg1.
+ #
+ nh_addr = self.pg1.remote_ip4
+ ip_punt_redirect = VppIpPuntRedirect(self, self.pg0.sw_if_index,
+ self.pg1.sw_if_index, nh_addr)
+ ip_punt_redirect.add_vpp_config()
+
+ action_tx = PolicerAction(
+ VppEnum.vl_api_sse2_qos_action_type_t.SSE2_QOS_ACTION_API_TRANSMIT,
+ 0)
+ #
+ # This policer drops no packets, we are just
+ # testing that they get to the right thread.
+ #
+ policer = VppPolicer(self, "ip4-punt", 400, 0, 10, 0, 1,
+ 0, 0, False, action_tx, action_tx, action_tx)
+ policer.add_vpp_config()
+ ip_punt_policer = VppIpPuntPolicer(self, policer.policer_index)
+ ip_punt_policer.add_vpp_config()
+
+ for worker in [0, 1]:
+ self.send_and_expect(self.pg0, pkts, self.pg1, worker=worker)
+ self.logger.debug(self.vapi.cli("show trace max 100"))
+
+ # Combined stats, all threads
+ stats = policer.get_stats()
+
+ # Single rate policer - expect conform, violate but no exceed
+ self.assertGreater(stats['conform_packets'], 0)
+ self.assertEqual(stats['exceed_packets'], 0)
+ self.assertGreater(stats['violate_packets'], 0)
+
+ # Worker 0, should have done all the policing
+ stats0 = policer.get_stats(worker=0)
+ self.assertEqual(stats, stats0)
+
+ # Worker 1, should have handed everything off
+ stats1 = policer.get_stats(worker=1)
+ self.assertEqual(stats1['conform_packets'], 0)
+ self.assertEqual(stats1['exceed_packets'], 0)
+ self.assertEqual(stats1['violate_packets'], 0)
+
+ # Bind the policer to worker 1 and repeat
+ policer.bind_vpp_config(1, True)
+ for worker in [0, 1]:
+ self.send_and_expect(self.pg0, pkts, self.pg1, worker=worker)
+ self.logger.debug(self.vapi.cli("show trace max 100"))
+
+ # The 2 workers should now have policed the same amount
+ stats = policer.get_stats()
+ stats0 = policer.get_stats(worker=0)
+ stats1 = policer.get_stats(worker=1)
+
+ self.assertGreater(stats0['conform_packets'], 0)
+ self.assertEqual(stats0['exceed_packets'], 0)
+ self.assertGreater(stats0['violate_packets'], 0)
+
+ self.assertGreater(stats1['conform_packets'], 0)
+ self.assertEqual(stats1['exceed_packets'], 0)
+ self.assertGreater(stats1['violate_packets'], 0)
+
+ self.assertEqual(stats0['conform_packets'] + stats1['conform_packets'],
+ stats['conform_packets'])
+
+ self.assertEqual(stats0['violate_packets'] + stats1['violate_packets'],
+ stats['violate_packets'])
+
+ # Unbind the policer and repeat
+ policer.bind_vpp_config(1, False)
+ for worker in [0, 1]:
+ self.send_and_expect(self.pg0, pkts, self.pg1, worker=worker)
+ self.logger.debug(self.vapi.cli("show trace max 100"))
+
+ # The policer should auto-bind to worker 0 when packets arrive
+ stats = policer.get_stats()
+ stats0new = policer.get_stats(worker=0)
+ stats1new = policer.get_stats(worker=1)
+
+ self.assertGreater(stats0new['conform_packets'],
+ stats0['conform_packets'])
+ self.assertEqual(stats0new['exceed_packets'], 0)
+ self.assertGreater(stats0new['violate_packets'],
+ stats0['violate_packets'])
+
+ self.assertEqual(stats1, stats1new)
+
+ #
+ # Clean up
+ #
+ ip_punt_policer.remove_vpp_config()
+ policer.remove_vpp_config()
+ ip_punt_redirect.remove_vpp_config()
+
+
class TestIPDeag(VppTestCase):
""" IPv4 Deaggregate Routes """
rx = self.send_and_expect(self.pg0, p_24 * NUM_PKTS, self.pg1)
+@tag_fixme_vpp_workers
class TestIPv4Frag(VppTestCase):
""" IPv4 fragmentation """
self.assertTrue(pfx.query_vpp_config())
+class TestIPv4PathMTU(VppTestCase):
+ """ IPv4 Path MTU """
+
+ @classmethod
+ def setUpClass(cls):
+ super(TestIPv4PathMTU, cls).setUpClass()
+
+ cls.create_pg_interfaces(range(2))
+
+ # setup all interfaces
+ for i in cls.pg_interfaces:
+ i.admin_up()
+ i.config_ip4()
+ i.resolve_arp()
+
+ @classmethod
+ def tearDownClass(cls):
+ super(TestIPv4PathMTU, cls).tearDownClass()
+
+ def test_path_mtu(self):
+ """ Path MTU """
+
+ #
+ # The goal here is not to test that fragmentation works correctly,
+ # that's done elsewhere, the intent is to ensure that the Path MTU
+ # settings are honoured.
+ #
+ self.vapi.cli("adjacency counters enable")
+
+ # set the interface MTU to a reasonable value
+ self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index,
+ [1800, 0, 0, 0])
+
+ self.pg1.generate_remote_hosts(4)
+
+ p_2k = (Ether(dst=self.pg0.local_mac,
+ src=self.pg0.remote_mac) /
+ IP(src=self.pg0.remote_ip4,
+ dst=self.pg1.remote_ip4) /
+ UDP(sport=1234, dport=5678) /
+ Raw(b'0xa' * 640))
+ p_1k = (Ether(dst=self.pg0.local_mac,
+ src=self.pg0.remote_mac) /
+ IP(src=self.pg0.remote_ip4,
+ dst=self.pg1.remote_ip4) /
+ UDP(sport=1234, dport=5678) /
+ Raw(b'0xa' * 320))
+
+ nbr = VppNeighbor(self,
+ self.pg1.sw_if_index,
+ self.pg1.remote_mac,
+ self.pg1.remote_ip4).add_vpp_config()
+
+ # this is now the interface MTU frags
+ self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=2)
+ self.send_and_expect(self.pg0, [p_1k], self.pg1)
+
+ # drop the path MTU for this neighbour to below the interface MTU
+ # expect more frags
+ pmtu = VppIpPathMtu(self, self.pg1.remote_ip4, 900).add_vpp_config()
+
+ self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3)
+ self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2)
+
+ # print/format the adj delegate
+ self.logger.info(self.vapi.cli("sh adj 5"))
+
+ # increase the path MTU to more than the interface
+ # expect to use the interface MTU
+ pmtu.modify(8192)
+
+ self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=2)
+ self.send_and_expect(self.pg0, [p_1k], self.pg1)
+
+ # go back to an MTU from the path
+ # wrap the call around mark-n-sweep to enusre updates clear stale
+ self.vapi.ip_path_mtu_replace_begin()
+ pmtu.modify(900)
+ self.vapi.ip_path_mtu_replace_end()
+
+ self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3)
+ self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2)
+
+ # raise the interface's MTU
+ # should still use that of the path
+ self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index,
+ [2000, 0, 0, 0])
+ self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3)
+ self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2)
+
+ # set path high and interface low
+ pmtu.modify(2000)
+ self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index,
+ [900, 0, 0, 0])
+ self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3)
+ self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2)
+
+ # remove the path MTU using the mark-n-sweep semantics
+ self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index,
+ [1800, 0, 0, 0])
+ self.vapi.ip_path_mtu_replace_begin()
+ self.vapi.ip_path_mtu_replace_end()
+
+ self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=2)
+ self.send_and_expect(self.pg0, [p_1k], self.pg1)
+
+ #
+ # set path MTU for a neighbour that doesn't exist, yet
+ #
+ pmtu2 = VppIpPathMtu(self,
+ self.pg1.remote_hosts[2].ip4,
+ 900).add_vpp_config()
+
+ p_2k = (Ether(dst=self.pg0.local_mac,
+ src=self.pg0.remote_mac) /
+ IP(src=self.pg0.remote_ip4,
+ dst=self.pg1.remote_hosts[2].ip4) /
+ UDP(sport=1234, dport=5678) /
+ Raw(b'0xa' * 640))
+ p_1k = (Ether(dst=self.pg0.local_mac,
+ src=self.pg0.remote_mac) /
+ IP(src=self.pg0.remote_ip4,
+ dst=self.pg1.remote_hosts[2].ip4) /
+ UDP(sport=1234, dport=5678) /
+ Raw(b'0xa' * 320))
+
+ nbr2 = VppNeighbor(self,
+ self.pg1.sw_if_index,
+ self.pg1.remote_hosts[2].mac,
+ self.pg1.remote_hosts[2].ip4).add_vpp_config()
+
+ # should frag to the path MTU
+ self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3)
+ self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2)
+
+ # remove and re-add the neighbour
+ nbr2.remove_vpp_config()
+ nbr2.add_vpp_config()
+
+ # should frag to the path MTU
+ self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3)
+ self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2)
+
+ #
+ # set PMTUs for many peers
+ #
+ N_HOSTS = 16
+ self.pg1.generate_remote_hosts(16)
+ self.pg1.configure_ipv4_neighbors()
+
+ for h in range(N_HOSTS):
+ pmtu = VppIpPathMtu(self, self.pg1.remote_hosts[h].ip4, 900)
+ pmtu.add_vpp_config()
+ self.assertTrue(pmtu.query_vpp_config())
+
+ self.logger.info(self.vapi.cli("sh ip pmtu"))
+ dump = list(self.vapi.vpp.details_iter(self.vapi.ip_path_mtu_get))
+ self.assertEqual(N_HOSTS, len(dump))
+
+ for h in range(N_HOSTS):
+ p_2k[IP].dst = self.pg1.remote_hosts[h].ip4
+ p_1k[IP].dst = self.pg1.remote_hosts[h].ip4
+
+ # should frag to the path MTU
+ self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=3)
+ self.send_and_expect(self.pg0, [p_1k], self.pg1, n_rx=2)
+
+
if __name__ == '__main__':
unittest.main(testRunner=VppTestRunner)
Code Review / vpp.git / blobdiff