+ def verify_esp_pkts(self, rxs, n_sent, spi, has_udp):
+ self.assertEqual(len(rxs), n_sent)
+ for rx in rxs:
+ self.assertTrue(rx.haslayer(IP))
+ self.assertTrue(rx.haslayer(ESP))
+ self.assertEqual(rx[ESP].spi, spi)
+ if has_udp:
+ self.assertTrue(rx.haslayer(UDP))
+
+ def test_traffic(self):
+ """ Punt socket traffic """
+
+ port = self.ports[0]
+ pt_ex = VppEnum.vl_api_punt_type_t.PUNT_API_TYPE_EXCEPTION
+ punt_ex = {
+ 'type': pt_ex,
+ 'punt': {
+ 'exception': {}
+ }
+ }
+
+ #
+ # we need an IPSec tunnels for this to work otherwise ESP gets dropped
+ # due to unknown IP proto
+ #
+ VppIpsecTunInterface(self, self.pg0, 1000, 1000,
+ (VppEnum.vl_api_ipsec_crypto_alg_t.
+ IPSEC_API_CRYPTO_ALG_AES_CBC_128),
+ "0123456701234567",
+ "0123456701234567",
+ (VppEnum.vl_api_ipsec_integ_alg_t.
+ IPSEC_API_INTEG_ALG_SHA1_96),
+ "0123456701234567",
+ "0123456701234567").add_vpp_config()
+ VppIpsecTunInterface(self, self.pg0, 1001, 1001,
+ (VppEnum.vl_api_ipsec_crypto_alg_t.
+ IPSEC_API_CRYPTO_ALG_AES_CBC_128),
+ "0123456701234567",
+ "0123456701234567",
+ (VppEnum.vl_api_ipsec_integ_alg_t.
+ IPSEC_API_INTEG_ALG_SHA1_96),
+ "0123456701234567",
+ "0123456701234567",
+ udp_encap=True).add_vpp_config()
+
+ #
+ # we're dealing with IPSec tunnels punting for no-such-tunnel
+ # adn SPI=0
+ #
+ cfgs = dict()
+ cfgs['ipsec4-no-such-tunnel'] = {'spi': 99, 'udp': False}
+ cfgs['ipsec4-spi-0'] = {'spi': 0, 'udp': False}
+ cfgs['ipsec4-spi-o-udp-0'] = {'spi': 0, 'udp': True}
+
+ #
+ # find the VPP ID for these punt exception reasin
+ #
+ rs = self.vapi.punt_reason_dump()
+ for key in cfgs:
+ for r in rs:
+ if r.reason.name == key:
+ cfgs[key]['id'] = r.reason.id
+ cfgs[key]['vpp'] = copy.deepcopy(
+ set_reason(punt_ex,
+ cfgs[key]['id']))
+ break
+
+ #
+ # configure punt sockets
+ #
+ for cfg in cfgs.values():
+ cfg['sock'] = self.socket_client_create(b"%s/socket_%d" % (
+ six.ensure_binary(self.tempdir), cfg['id']))
+ self.vapi.punt_socket_register(
+ cfg['vpp'],
+ b"%s/socket_%d" % (six.ensure_binary(self.tempdir),
+ cfg['id']))
+
+ #
+ # create packet streams for 'no-such-tunnel' exception
+ #
+ for cfg in cfgs.values():
+ pkt = (Ether(src=self.pg0.remote_mac,
+ dst=self.pg0.local_mac) /
+ IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4))
+ if (cfg['udp']):
+ pkt = pkt / UDP(sport=666, dport=4500)
+ pkt = (pkt / ESP(spi=cfg['spi'], seq=3) /
+ Raw('\xa5' * 100))
+ cfg['pkts'] = [pkt]
+
+ #
+ # send packets for each SPI we expect to be punted
+ #
+ for cfg in cfgs.values():
+ self.send_and_assert_no_replies(self.pg0, cfg['pkts'])
+
+ #
+ # verify the punted packets arrived on the associated socket
+ #
+ for cfg in cfgs.values():
+ rx = cfg['sock'].close()
+ self.verify_esp_pkts(rx, len(cfg['pkts']),
+ cfg['spi'], cfg['udp'])
+
+ #
+ # socket deregister
+ #
+ for cfg in cfgs.values():
+ self.vapi.punt_socket_deregister(cfg['vpp'])
+
+
+class TestIpProtoPuntSocket(TestPuntSocket):
+ """ Punt Socket for IP packets """
+
+ @classmethod
+ def setUpClass(cls):
+ super(TestIpProtoPuntSocket, cls).setUpClass()
+
+ @classmethod
+ def tearDownClass(cls):
+ super(TestIpProtoPuntSocket, cls).tearDownClass()
+
+ def setUp(self):
+ super(TestIpProtoPuntSocket, self).setUp()
+
+ for i in self.pg_interfaces:
+ i.config_ip4()
+ i.resolve_arp()
+
+ def tearDown(self):
+ super(TestIpProtoPuntSocket, self).tearDown()
+ for i in self.pg_interfaces:
+ i.unconfig_ip4()
+ i.admin_down()
+
+ def test_registration(self):
+ """ Punt socket registration/deregistration"""
+
+ 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
+ proto_eigrp = VppEnum.vl_api_ip_proto_t.IP_API_PROTO_EIGRP
+
+ punts = self.vapi.punt_socket_dump(type=pt_ip)
+ self.assertEqual(len(punts), 0)
+
+ #
+ # configure a punt socket
+ #
+ punt_ospf = {
+ 'type': pt_ip,
+ 'punt': {
+ 'ip_proto': {
+ 'af': af_ip4,
+ 'protocol': proto_ospf
+ }
+ }
+ }
+ punt_eigrp = {
+ 'type': pt_ip,
+ 'punt': {
+ 'ip_proto': {
+ 'af': af_ip4,
+ 'protocol': proto_eigrp
+ }
+ }
+ }
+
+ self.vapi.punt_socket_register(punt_ospf,
+ b"%s/socket_punt_1" %
+ six.ensure_binary(self.tempdir))
+ self.vapi.punt_socket_register(punt_eigrp,
+ b"%s/socket_punt_2" %
+ six.ensure_binary(self.tempdir))
+ self.logger.info(self.vapi.cli("sh punt sock reg ip"))
+ punts = self.vapi.punt_socket_dump(type=pt_ip)
+ self.assertEqual(len(punts), 2)
+ self.verify_ip_proto(punt_ospf, punts[0])
+ self.verify_ip_proto(punt_eigrp, punts[1])
+
+ #
+ # deregister a punt socket
+ #
+ 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,
+ b"%s/socket_punt_3" %
+ six.ensure_binary(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(b"%s/socket_1" % (
+ six.ensure_binary(self.tempdir)))
+ self.vapi.punt_socket_register(
+ punt_ospf,
+ b"%s/socket_1" % (six.ensure_binary(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)
+