+
+class TestPunt(VppTestCase):
+ """ Punt Test Case """
+
+ @classmethod
+ def setUpClass(cls):
+ super(TestPunt, cls).setUpClass()
+
+ @classmethod
+ def tearDownClass(cls):
+ super(TestPunt, cls).tearDownClass()
+
+ def setUp(self):
+ super(TestPunt, self).setUp()
+
+ self.create_pg_interfaces(range(4))
+
+ for i in self.pg_interfaces:
+ i.admin_up()
+ i.config_ip4()
+ i.resolve_arp()
+ i.config_ip6()
+ i.resolve_ndp()
+
+ def tearDown(self):
+ for i in self.pg_interfaces:
+ i.unconfig_ip4()
+ i.unconfig_ip6()
+ i.ip6_disable()
+ i.admin_down()
+ super(TestPunt, self).tearDown()
+
+ def test_punt(self):
+ """ Excpetion Path testing """
+
+ #
+ # Using the test CLI we will hook in a exception path to
+ # send ACL deny packets out of pg0 and pg1.
+ # the ACL is src,dst = 1.1.1.1,1.1.1.2
+ #
+ ip_1_1_1_2 = VppIpRoute(self, "1.1.1.2", 32,
+ [VppRoutePath(self.pg3.remote_ip4,
+ self.pg3.sw_if_index)])
+ ip_1_1_1_2.add_vpp_config()
+ ip_1_2 = VppIpRoute(self, "1::2", 128,
+ [VppRoutePath(self.pg3.remote_ip6,
+ self.pg3.sw_if_index,
+ proto=DpoProto.DPO_PROTO_IP6)],
+ is_ip6=1)
+ ip_1_2.add_vpp_config()
+
+ p4 = (Ether(src=self.pg2.remote_mac,
+ dst=self.pg2.local_mac) /
+ IP(src="1.1.1.1", dst="1.1.1.2") /
+ UDP(sport=1234, dport=1234) /
+ Raw('\xa5' * 100))
+ p6 = (Ether(src=self.pg2.remote_mac,
+ dst=self.pg2.local_mac) /
+ IPv6(src="1::1", dst="1::2") /
+ UDP(sport=1234, dport=1234) /
+ Raw('\xa5' * 100))
+ self.send_and_expect(self.pg2, p4*1, self.pg3)
+ self.send_and_expect(self.pg2, p6*1, self.pg3)
+
+ #
+ # apply the punting features
+ #
+ self.vapi.cli("test punt pg2")
+
+ #
+ # pkts now dropped
+ #
+ self.send_and_assert_no_replies(self.pg2, p4*65)
+ self.send_and_assert_no_replies(self.pg2, p6*65)
+
+ #
+ # Check state:
+ # 1 - node error counters
+ # 2 - per-reason counters
+ # 2, 3 are the index of the assigned punt reason
+ #
+ stats = self.statistics.get_counter(
+ "/err/punt-dispatch/No registrations")
+ self.assertEqual(stats, 130)
+
+ stats = self.statistics.get_counter("/net/punt")
+ self.assertEqual(stats[0][7]['packets'], 65)
+ self.assertEqual(stats[0][8]['packets'], 65)
+
+ #
+ # use the test CLI to test a client that punts exception
+ # packets out of pg0
+ #
+ self.vapi.cli("test punt pg0 %s" % self.pg0.remote_ip4)
+ self.vapi.cli("test punt pg0 %s" % self.pg0.remote_ip6)
+
+ rx4s = self.send_and_expect(self.pg2, p4*65, self.pg0)
+ rx6s = self.send_and_expect(self.pg2, p6*65, self.pg0)
+
+ #
+ # check the packets come out IP unmodified but destined to pg0 host
+ #
+ for rx in rx4s:
+ self.assertEqual(rx[Ether].dst, self.pg0.remote_mac)
+ self.assertEqual(rx[Ether].src, self.pg0.local_mac)
+ self.assertEqual(p4[IP].dst, rx[IP].dst)
+ self.assertEqual(p4[IP].ttl, rx[IP].ttl)
+ for rx in rx6s:
+ self.assertEqual(rx[Ether].dst, self.pg0.remote_mac)
+ self.assertEqual(rx[Ether].src, self.pg0.local_mac)
+ self.assertEqual(p6[IPv6].dst, rx[IPv6].dst)
+ self.assertEqual(p6[IPv6].hlim, rx[IPv6].hlim)
+
+ stats = self.statistics.get_counter("/net/punt")
+ self.assertEqual(stats[0][7]['packets'], 2*65)
+ self.assertEqual(stats[0][8]['packets'], 2*65)
+
+ #
+ # add another registration for the same reason to send packets
+ # out of pg1
+ #
+ self.vapi.cli("test punt pg1 %s" % self.pg1.remote_ip4)
+ self.vapi.cli("test punt pg1 %s" % self.pg1.remote_ip6)
+
+ self.vapi.cli("clear trace")
+ self.pg2.add_stream(p4 * 65)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ rxd = self.pg0.get_capture(65)
+ for rx in rxd:
+ self.assertEqual(rx[Ether].dst, self.pg0.remote_mac)
+ self.assertEqual(rx[Ether].src, self.pg0.local_mac)
+ self.assertEqual(p4[IP].dst, rx[IP].dst)
+ self.assertEqual(p4[IP].ttl, rx[IP].ttl)
+ rxd = self.pg1.get_capture(65)
+ for rx in rxd:
+ self.assertEqual(rx[Ether].dst, self.pg1.remote_mac)
+ self.assertEqual(rx[Ether].src, self.pg1.local_mac)
+ self.assertEqual(p4[IP].dst, rx[IP].dst)
+ self.assertEqual(p4[IP].ttl, rx[IP].ttl)
+
+ self.vapi.cli("clear trace")
+ self.pg2.add_stream(p6 * 65)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ rxd = self.pg0.get_capture(65)
+ for rx in rxd:
+ self.assertEqual(rx[Ether].dst, self.pg0.remote_mac)
+ self.assertEqual(rx[Ether].src, self.pg0.local_mac)
+ self.assertEqual(p6[IPv6].dst, rx[IPv6].dst)
+ self.assertEqual(p6[IPv6].hlim, rx[IPv6].hlim)
+ rxd = self.pg1.get_capture(65)
+ for rx in rxd:
+ self.assertEqual(rx[Ether].dst, self.pg1.remote_mac)
+ self.assertEqual(rx[Ether].src, self.pg1.local_mac)
+ self.assertEqual(p6[IPv6].dst, rx[IPv6].dst)
+ self.assertEqual(p6[IPv6].hlim, rx[IPv6].hlim)
+
+ stats = self.statistics.get_counter("/net/punt")
+ self.assertEqual(stats[0][7]['packets'], 3*65)
+ self.assertEqual(stats[0][8]['packets'], 3*65)
+
+ self.logger.info(self.vapi.cli("show vlib graph punt-dispatch"))
+ self.logger.info(self.vapi.cli("show punt client"))
+ self.logger.info(self.vapi.cli("show punt reason"))
+ self.logger.info(self.vapi.cli("show punt stats"))
+ self.logger.info(self.vapi.cli("show punt db"))
+
+ self.vapi.cli("test punt clear")
+
+
Code Review / vpp.git / blobdiff