+ self.vapi.punt_socket_deregister(punt_ospf)
+ punts = self.vapi.punt_socket_dump(type=pt_ip)
+ self.assertEqual(len(punts), 1)
+
+ #
+ # configure a punt socket again
+ #
+ self.vapi.punt_socket_register(punt_ospf,
+ "%s/socket_punt_3" % self.tempdir)
+ punts = self.vapi.punt_socket_dump(type=pt_ip)
+ self.assertEqual(len(punts), 2)
+
+ self.logger.info(self.vapi.cli("sh punt sock reg exception"))
+
+ #
+ # deregister all punt socket
+ #
+ self.vapi.punt_socket_deregister(punt_eigrp)
+ self.vapi.punt_socket_deregister(punt_ospf)
+ punts = self.vapi.punt_socket_dump(type=pt_ip)
+ self.assertEqual(len(punts), 0)
+
+ def verify_ospf_pkts(self, rxs, n_sent):
+ self.assertEqual(len(rxs), n_sent)
+ for rx in rxs:
+ self.assertTrue(rx.haslayer(OSPF_Hdr))
+
+ def test_traffic(self):
+ """ Punt socket traffic """
+
+ af_ip4 = VppEnum.vl_api_address_family_t.ADDRESS_IP4
+ pt_ip = VppEnum.vl_api_punt_type_t.PUNT_API_TYPE_IP_PROTO
+ proto_ospf = VppEnum.vl_api_ip_proto_t.IP_API_PROTO_OSPF
+
+ #
+ # configure a punt socket to capture OSPF packets
+ #
+ punt_ospf = {
+ 'type': pt_ip,
+ 'punt': {
+ 'ip_proto': {
+ 'af': af_ip4,
+ 'protocol': proto_ospf
+ }
+ }
+ }
+
+ #
+ # create packet streams and configure a punt sockets
+ #
+ pkt = (Ether(src=self.pg0.remote_mac,
+ dst=self.pg0.local_mac) /
+ IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) /
+ OSPF_Hdr() /
+ OSPFv3_Hello())
+ pkts = pkt * 7
+
+ sock = self.socket_client_create("%s/socket_1" % self.tempdir)
+ self.vapi.punt_socket_register(
+ punt_ospf, "%s/socket_1" % self.tempdir)
+
+ #
+ # send packets for each SPI we expect to be punted
+ #
+ self.send_and_assert_no_replies(self.pg0, pkts)
+
+ #
+ # verify the punted packets arrived on the associated socket
+ #
+ rx = sock.close()
+ self.verify_ospf_pkts(rx, len(pkts))
+ self.vapi.punt_socket_deregister(punt_ospf)
+
+
+class TestPunt(VppTestCase):
+ """ Exception 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.admin_down()
+ super(TestPunt, self).tearDown()
+
+ def test_punt(self):
+ """ Exception Path testing """
+
+ #
+ # dump the punt registered reasons
+ # search for a few we know should be there
+ #
+ rs = self.vapi.punt_reason_dump()
+
+ reasons = ["ipsec6-no-such-tunnel",
+ "ipsec4-no-such-tunnel",
+ "ipsec4-spi-o-udp-0"]
+
+ for reason in reasons:
+ found = False
+ for r in rs:
+ if r.reason.name == reason:
+ found = True
+ break
+ self.assertTrue(found)
+
+ #
+ # 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)])
+ 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(b'\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(b'\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")
+
+ #
+ # dump the punt reasons to learn the IDs assigned
+ #
+ rs = self.vapi.punt_reason_dump(reason={'name': "reason-v4"})
+ r4 = rs[0].reason.id
+ rs = self.vapi.punt_reason_dump(reason={'name': "reason-v6"})
+ r6 = rs[0].reason.id
+
+ #
+ # pkts now dropped
+ #
+ self.send_and_assert_no_replies(self.pg2, p4*NUM_PKTS)
+ self.send_and_assert_no_replies(self.pg2, p6*NUM_PKTS)
+
+ #
+ # Check state:
+ # 1 - node error counters
+ # 2 - per-reason counters
+ # 2, 3 are the index of the assigned punt reason
+ #
+ stats = self.statistics.get_err_counter(
+ "/err/punt-dispatch/No registrations")
+ self.assertEqual(stats, 2*NUM_PKTS)
+
+ stats = self.statistics.get_counter("/net/punt")
+ self.assertEqual(stats[0][r4]['packets'], NUM_PKTS)
+ self.assertEqual(stats[0][r6]['packets'], NUM_PKTS)
+
+ #
+ # 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*NUM_PKTS, self.pg0)
+ rx6s = self.send_and_expect(self.pg2, p6*NUM_PKTS, 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][r4]['packets'], 2*NUM_PKTS)
+ self.assertEqual(stats[0][r6]['packets'], 2*NUM_PKTS)
+
+ #
+ # 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)
+
Code Review / vpp.git / blobdiff