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/*
 *------------------------------------------------------------------
 * Copyright (c) 2009 Cisco and/or its affiliates.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *------------------------------------------------------------------
 */

#ifndef included_vlibmemory_api_common_h
#define included_vlibmemory_api_common_h

#include <svm/svm_common.h>
#include <vlibapi/api.h>
#include <vlibmemory/memory_api.h>
#include <vlibmemory/memory_client.h>
#include <vlibmemory/socket_api.h>
#include <vlibmemory/socket_client.h>

void vl_api_rpc_call_main_thread (void *fp, u8 * data, u32 data_length);
u16 vl_client_get_first_plugin_msg_id (const char *plugin_name);
void vl_api_send_pending_rpc_requests (vlib_main_t * vm);
u8 *vl_api_serialize_message_table (api_main_t * am, u8 * vector);

always_inline void
vl_api_send_msg (vl_api_registration_t * rp, u8 * elem)
{
  if (PREDICT_FALSE (rp->registration_type > REGISTRATION_TYPE_SHMEM))
    {
      vl_socket_api_send (rp, elem);
    }
  else
    {
      vl_msg_api_send_shmem (rp->vl_input_queue, (u8 *) & elem);
    }
}

always_inline int
vl_api_can_send_msg (vl_api_registration_t * rp)
{
  if (PREDICT_FALSE (rp->registration_type > REGISTRATION_TYPE_SHMEM))
    return 1;
  else
    return vl_mem_api_can_send (rp->vl_input_queue);
}

always_inline vl_api_registration_t *
vl_api_client_index_to_registration (u32 index)
{
  if (vl_socket_api_registration_handle_is_valid (ntohl (index)))
    return vl_socket_api_client_handle_to_registration (ntohl (index));
  return vl_mem_api_client_index_to_registration (index);
}

always_inline u32
vl_api_registration_file_index (vl_api_registration_t * reg)
{
  return reg->clib_file_index;
}

always_inline clib_file_t *
vl_api_registration_file (vl_api_registration_t * reg)
{
  return clib_file_get (&file_main, vl_api_registration_file_index (reg));
}

always_inline void
vl_api_registration_del_file (vl_api_registration_t * reg)
{
  clib_file_t *cf = vl_api_registration_file (reg);
  if (cf)
    clib_file_del (&file_main, cf);
}

always_inline clib_error_t *
vl_api_send_fd_msg (vl_api_registration_t * reg, int fds[], int n_fds)
{
  clib_file_t *cf = vl_api_registration_file (reg);
  if (cf)
    return vl_sock_api_send_fd_msg (cf->file_descriptor, fds, n_fds);
  return 0;
}

always_inline clib_error_t *
vl_api_recv_fd_msg (vl_api_registration_t * reg, int fds[], int n_fds,
		    u32 wait)
{
  clib_file_t *cf = vl_api_registration_file (reg);
  if (cf)
    return vl_sock_api_recv_fd_msg (cf->file_descriptor, fds, n_fds, wait);
  return 0;
}

/*
 * vl_api_clnt process data used by transports (socket api in particular)
 */
extern vlib_node_registration_t vl_api_clnt_node;
extern volatile int **vl_api_queue_cursizes;

typedef enum vl_api_clnt_process_events
{
  QUEUE_SIGNAL_EVENT = 1,
  SOCKET_READ_EVENT
} vl_api_clnt_process_events_t;

#define foreach_histogram_bucket                \
_(400)                                          \
_(200)                                          \
_(100)                                          \
_(10)

typedef enum
{
#define _(n) SLEEP_##n##_US,
  foreach_histogram_bucket
#undef _
    SLEEP_N_BUCKETS,
} histogram_index_t;

extern u64 vector_rate_histogram[];

/*
 * sockclnt APIs XXX are these actually used anywhere?
 */
vl_api_registration_t *sockclnt_get_registration (u32 index);
void socksvr_add_pending_output (struct clib_file *uf,
				 struct vl_api_registration_ *cf,
				 u8 * buffer, uword buffer_bytes);
void vl_socket_process_msg (struct clib_file *uf,
			    struct vl_api_registration_ *rp, i8 * input_v);
u32 sockclnt_open_index (char *client_name, char *hostname, int port);
void sockclnt_close_index (u32 index);
void vl_client_msg_api_send (vl_api_registration_t * cm, u8 * elem);

#endif /* included_vlibmemory_api_common_h */

/*
 * fd.io coding-style-patch-verification: ON
 *
 * Local Variables:
 * eval: (c-set-style "gnu")
 * End:
 */
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import unittest
import socket
import copy

from scapy.layers.ipsec import SecurityAssociation, ESP
from scapy.layers.l2 import Ether, Raw, GRE
from scapy.layers.inet import IP, UDP
from scapy.layers.inet6 import IPv6
from framework import VppTestRunner
from template_ipsec import TemplateIpsec, IpsecTun4Tests, IpsecTun6Tests, \
    IpsecTun4, IpsecTun6,  IpsecTcpTests, mk_scapy_crypt_key
from vpp_ipsec_tun_interface import VppIpsecTunInterface
from vpp_gre_interface import VppGreInterface
from vpp_ipip_tun_interface import VppIpIpTunInterface
from vpp_ip_route import VppIpRoute, VppRoutePath, DpoProto
from vpp_ipsec import VppIpsecSA, VppIpsecTunProtect
from vpp_l2 import VppBridgeDomain, VppBridgeDomainPort
from util import ppp
from vpp_papi import VppEnum


def config_tun_params(p, encryption_type, tun_if):
    ip_class_by_addr_type = {socket.AF_INET: IP, socket.AF_INET6: IPv6}
    use_esn = bool(p.flags & (VppEnum.vl_api_ipsec_sad_flags_t.
                              IPSEC_API_SAD_FLAG_USE_ESN))
    crypt_key = mk_scapy_crypt_key(p)
    p.scapy_tun_sa = SecurityAssociation(
        encryption_type, spi=p.vpp_tun_spi,
        crypt_algo=p.crypt_algo,
        crypt_key=crypt_key,
        auth_algo=p.auth_algo, auth_key=p.auth_key,
        tunnel_header=ip_class_by_addr_type[p.addr_type](
            src=tun_if.remote_ip,
            dst=tun_if.local_ip),
        nat_t_header=p.nat_header,
        use_esn=use_esn)
    p.vpp_tun_sa = SecurityAssociation(
        encryption_type, spi=p.scapy_tun_spi,
        crypt_algo=p.crypt_algo,
        crypt_key=crypt_key,
        auth_algo=p.auth_algo, auth_key=p.auth_key,
        tunnel_header=ip_class_by_addr_type[p.addr_type](
            dst=tun_if.remote_ip,
            src=tun_if.local_ip),
        nat_t_header=p.nat_header,
        use_esn=use_esn)


class TemplateIpsec4TunIfEsp(TemplateIpsec):
    """ IPsec tunnel interface tests """

    encryption_type = ESP

    @classmethod
    def setUpClass(cls):
        super(TemplateIpsec4TunIfEsp, cls).setUpClass()

    @classmethod
    def tearDownClass(cls):
        super(TemplateIpsec4TunIfEsp, cls).tearDownClass()

    def setUp(self):
        super(TemplateIpsec4TunIfEsp, self).setUp()

        self.tun_if = self.pg0

        p = self.ipv4_params

        p.tun_if = VppIpsecTunInterface(self, self.pg0, p.vpp_tun_spi,
                                        p.scapy_tun_spi, p.crypt_algo_vpp_id,
                                        p.crypt_key, p.crypt_key,
                                        p.auth_algo_vpp_id, p.auth_key,
                                        p.auth_key)
        p.tun_if.add_vpp_config()
        p.tun_if.admin_up()
        p.tun_if.config_ip4()
        p.tun_if.config_ip6()
        config_tun_params(p, self.encryption_type, p.tun_if)

        r = VppIpRoute(self, p.remote_tun_if_host, 32,
                       [VppRoutePath(p.tun_if.remote_ip4,
                                     0xffffffff)])
        r.add_vpp_config()
        r = VppIpRoute(self, p.remote_tun_if_host6, 128,
                       [VppRoutePath(p.tun_if.remote_ip6,
                                     0xffffffff,
                                     proto=DpoProto.DPO_PROTO_IP6)])
        r.add_vpp_config()

    def tearDown(self):
        super(TemplateIpsec4TunIfEsp, self).tearDown()


class TemplateIpsec4TunIfEspUdp(TemplateIpsec):
    """ IPsec UDP tunnel interface tests """

    tun4_encrypt_node_name = "esp4-encrypt-tun"
    tun4_decrypt_node_name = "esp4-decrypt-tun"
    encryption_type = ESP

    @classmethod
    def setUpClass(cls):
        super(TemplateIpsec4TunIfEspUdp, cls).setUpClass()

    @classmethod
    def tearDownClass(cls):
        super(TemplateIpsec4TunIfEspUdp, cls).tearDownClass()

    def setUp(self):
        super(TemplateIpsec4TunIfEspUdp, self).setUp()

        self.tun_if = self.pg0

        p = self.ipv4_params
        p.flags = (VppEnum.vl_api_ipsec_sad_flags_t.
                   IPSEC_API_SAD_FLAG_UDP_ENCAP)
        p.nat_header = UDP(sport=5454, dport=4500)

        p.tun_if = VppIpsecTunInterface(self, self.pg0, p.vpp_tun_spi,
                                        p.scapy_tun_spi, p.crypt_algo_vpp_id,
                                        p.crypt_key, p.crypt_key,
                                        p.auth_algo_vpp_id, p.auth_key,
                                        p.auth_key, udp_encap=True)
        p.tun_if.add_vpp_config()
        p.tun_if.admin_up()
        p.tun_if.config_ip4()
        p.tun_if.config_ip6()
        config_tun_params(p, self.encryption_type, p.tun_if)

        r = VppIpRoute(self, p.remote_tun_if_host, 32,
                       [VppRoutePath(p.tun_if.remote_ip4,
                                     0xffffffff)])
        r.add_vpp_config()
        r = VppIpRoute(self, p.remote_tun_if_host6, 128,
                       [VppRoutePath(p.tun_if.remote_ip6,
                                     0xffffffff,
                                     proto=DpoProto.DPO_PROTO_IP6)])
        r.add_vpp_config()

    def tearDown(self):
        super(TemplateIpsec4TunIfEspUdp, self).tearDown()


class TestIpsec4TunIfEsp1(TemplateIpsec4TunIfEsp, IpsecTun4Tests):
    """ Ipsec ESP - TUN tests """
    tun4_encrypt_node_name = "esp4-encrypt-tun"
    tun4_decrypt_node_name = "esp4-decrypt-tun"

    def test_tun_basic64(self):
        """ ipsec 6o4 tunnel basic test """
        self.tun4_encrypt_node_name = "esp4-encrypt-tun"

        self.verify_tun_64(self.params[socket.AF_INET], count=1)

    def test_tun_burst64(self):
        """ ipsec 6o4 tunnel basic test """
        self.tun4_encrypt_node_name = "esp4-encrypt-tun"

        self.verify_tun_64(self.params[socket.AF_INET], count=257)

    def test_tun_basic_frag44(self):
        """ ipsec 4o4 tunnel frag basic test """
        self.tun4_encrypt_node_name = "esp4-encrypt-tun"

        p = self.ipv4_params

        self.vapi.sw_interface_set_mtu(p.tun_if.sw_if_index,
                                       [1500, 0, 0, 0])
        self.verify_tun_44(self.params[socket.AF_INET],
                           count=1, payload_size=1800, n_rx=2)
        self.vapi.sw_interface_set_mtu(p.tun_if.sw_if_index,
                                       [9000, 0, 0, 0])


class TestIpsec4TunIfEspUdp(TemplateIpsec4TunIfEspUdp, IpsecTun4Tests):
    """ Ipsec ESP UDP tests """

    tun4_input_node = "ipsec4-tun-input"

    def test_keepalive(self):
        """ IPSEC NAT Keepalive """
        self.verify_keepalive(self.ipv4_params)


class TestIpsec4TunIfEsp2(TemplateIpsec4TunIfEsp, IpsecTcpTests):
    """ Ipsec ESP - TCP tests """
    pass


class TemplateIpsec6TunIfEsp(TemplateIpsec):
    """ IPsec tunnel interface tests """

    encryption_type = ESP

    def setUp(self):
        super(TemplateIpsec6TunIfEsp, self).setUp()

        self.tun_if = self.pg0

        p = self.ipv6_params
        p.tun_if = VppIpsecTunInterface(self, self.pg0, p.vpp_tun_spi,
                                        p.scapy_tun_spi, p.crypt_algo_vpp_id,
                                        p.crypt_key, p.crypt_key,
                                        p.auth_algo_vpp_id, p.auth_key,
                                        p.auth_key, is_ip6=True)
        p.tun_if.add_vpp_config()
        p.tun_if.admin_up()
        p.tun_if.config_ip6()
        p.tun_if.config_ip4()
        config_tun_params(p, self.encryption_type, p.tun_if)

        r = VppIpRoute(self, p.remote_tun_if_host, 128,
                       [VppRoutePath(p.tun_if.remote_ip6,
                                     0xffffffff,
                                     proto=DpoProto.DPO_PROTO_IP6)])
        r.add_vpp_config()
        r = VppIpRoute(self, p.remote_tun_if_host4, 32,
                       [VppRoutePath(p.tun_if.remote_ip4,
                                     0xffffffff)])
        r.add_vpp_config()

    def tearDown(self):
        super(TemplateIpsec6TunIfEsp, self).tearDown()


class TestIpsec6TunIfEsp1(TemplateIpsec6TunIfEsp, IpsecTun6Tests):
    """ Ipsec ESP - TUN tests """
    tun6_encrypt_node_name = "esp6-encrypt-tun"
    tun6_decrypt_node_name = "esp6-decrypt-tun"

    def test_tun_basic46(self):
        """ ipsec 4o6 tunnel basic test """
        self.tun6_encrypt_node_name = "esp6-encrypt-tun"
        self.verify_tun_46(self.params[socket.AF_INET6], count=1)

    def test_tun_burst46(self):
        """ ipsec 4o6 tunnel burst test """
        self.tun6_encrypt_node_name = "esp6-encrypt-tun"
        self.verify_tun_46(self.params[socket.AF_INET6], count=257)


class TestIpsec4MultiTunIfEsp(TemplateIpsec, IpsecTun4):
    """ IPsec IPv4 Multi Tunnel interface """

    encryption_type = ESP
    tun4_encrypt_node_name = "esp4-encrypt-tun"
    tun4_decrypt_node_name = "esp4-decrypt-tun"

    def setUp(self):
        super(TestIpsec4MultiTunIfEsp, self).setUp()

        self.tun_if = self.pg0

        self.multi_params = []
        self.pg0.generate_remote_hosts(10)
        self.pg0.configure_ipv4_neighbors()

        for ii in range(10):
            p = copy.copy(self.ipv4_params)

            p.remote_tun_if_host = "1.1.1.%d" % (ii + 1)
            p.scapy_tun_sa_id = p.scapy_tun_sa_id + ii
            p.scapy_tun_spi = p.scapy_tun_spi + ii
            p.vpp_tun_sa_id = p.vpp_tun_sa_id + ii
            p.vpp_tun_spi = p.vpp_tun_spi + ii

            p.scapy_tra_sa_id = p.scapy_tra_sa_id + ii
            p.scapy_tra_spi = p.scapy_tra_spi + ii
            p.vpp_tra_sa_id = p.vpp_tra_sa_id + ii
            p.vpp_tra_spi = p.vpp_tra_spi + ii

            p.tun_if = VppIpsecTunInterface(self, self.pg0, p.vpp_tun_spi,
                                            p.scapy_tun_spi,
                                            p.crypt_algo_vpp_id,
                                            p.crypt_key, p.crypt_key,
                                            p.auth_algo_vpp_id, p.auth_key,
                                            p.auth_key,
                                            dst=self.pg0.remote_hosts[ii].ip4)
            p.tun_if.add_vpp_config()
            p.tun_if.admin_up()
            p.tun_if.config_ip4()
            config_tun_params(p, self.encryption_type, p.tun_if)
            self.multi_params.append(p)

            VppIpRoute(self, p.remote_tun_if_host, 32,
                       [VppRoutePath(p.tun_if.remote_ip4,
                                     0xffffffff)]).add_vpp_config()

    def tearDown(self):
        super(TestIpsec4MultiTunIfEsp, self).tearDown()

    def test_tun_44(self):
        """Multiple IPSEC tunnel interfaces """
        for p in self.multi_params:
            self.verify_tun_44(p, count=127)
            c = p.tun_if.get_rx_stats()
            self.assertEqual(c['packets'], 127)
            c = p.tun_if.get_tx_stats()
            self.assertEqual(c['packets'], 127)


class TestIpsec4TunIfEspAll(TemplateIpsec, IpsecTun4):
    """ IPsec IPv4 Tunnel interface all Algos """

    encryption_type = ESP
    tun4_encrypt_node_name = "esp4-encrypt-tun"
    tun4_decrypt_node_name = "esp4-decrypt-tun"

    def config_network(self, p):

        p.tun_if = VppIpsecTunInterface(self, self.pg0, p.vpp_tun_spi,
                                        p.scapy_tun_spi,
                                        p.crypt_algo_vpp_id,
                                        p.crypt_key, p.crypt_key,
                                        p.auth_algo_vpp_id, p.auth_key,
                                        p.auth_key,
                                        salt=p.salt)
        p.tun_if.add_vpp_config()
        p.tun_if.admin_up()
        p.tun_if.config_ip4()
        config_tun_params(p, self.encryption_type, p.tun_if)
        self.logger.info(self.vapi.cli("sh ipsec sa 0"))
        self.logger.info(self.vapi.cli("sh ipsec sa 1"))

        p.route = VppIpRoute(self, p.remote_tun_if_host, 32,
                             [VppRoutePath(p.tun_if.remote_ip4,
                                           0xffffffff)])
        p.route.add_vpp_config()

    def unconfig_network(self, p):
        p.tun_if.unconfig_ip4()
        p.tun_if.remove_vpp_config()
        p.route.remove_vpp_config()

    def setUp(self):
        super(TestIpsec4TunIfEspAll, self).setUp()

        self.tun_if = self.pg0

    def tearDown(self):
        super(TestIpsec4TunIfEspAll, self).tearDown()

    def rekey(self, p):
        #
        # change the key and the SPI
        #
        p.crypt_key = b'X' + p.crypt_key[1:]
        p.scapy_tun_spi += 1
        p.scapy_tun_sa_id += 1
        p.vpp_tun_spi += 1
        p.vpp_tun_sa_id += 1
        p.tun_if.local_spi = p.vpp_tun_spi
        p.tun_if.remote_spi = p.scapy_tun_spi

        config_tun_params(p, self.encryption_type, p.tun_if)

        p.tun_sa_in = VppIpsecSA(self,
                                 p.scapy_tun_sa_id,
                                 p.scapy_tun_spi,
                                 p.auth_algo_vpp_id,
                                 p.auth_key,
                                 p.crypt_algo_vpp_id,
                                 p.crypt_key,
                                 self.vpp_esp_protocol,
                                 flags=p.flags,
                                 salt=p.salt)
        p.tun_sa_out = VppIpsecSA(self,
                                  p.vpp_tun_sa_id,
                                  p.vpp_tun_spi,
                                  p.auth_algo_vpp_id,
                                  p.auth_key,
                                  p.crypt_algo_vpp_id,
                                  p.crypt_key,
                                  self.vpp_esp_protocol,
                                  flags=p.flags,
                                  salt=p.salt)
        p.tun_sa_in.add_vpp_config()
        p.tun_sa_out.add_vpp_config()

        self.vapi.ipsec_tunnel_if_set_sa(sw_if_index=p.tun_if.sw_if_index,
                                         sa_id=p.tun_sa_in.id,
                                         is_outbound=1)
        self.vapi.ipsec_tunnel_if_set_sa(sw_if_index=p.tun_if.sw_if_index,
                                         sa_id=p.tun_sa_out.id,
                                         is_outbound=0)
        self.logger.info(self.vapi.cli("sh ipsec sa"))

    def test_tun_44(self):
        """IPSEC tunnel all algos """

        # foreach VPP crypto engine
        engines = ["ia32", "ipsecmb", "openssl"]

        # foreach crypto algorithm
        algos = [{'vpp-crypto': (VppEnum.vl_api_ipsec_crypto_alg_t.
                                 IPSEC_API_CRYPTO_ALG_AES_GCM_128),
                  'vpp-integ': (VppEnum.vl_api_ipsec_integ_alg_t.
                                IPSEC_API_INTEG_ALG_NONE),
                  'scapy-crypto': "AES-GCM",
                  'scapy-integ': "NULL",
                  'key': b"JPjyOWBeVEQiMe7h",
                  'salt': 3333},
                 {'vpp-crypto': (VppEnum.vl_api_ipsec_crypto_alg_t.
                                 IPSEC_API_CRYPTO_ALG_AES_GCM_192),
                  'vpp-integ': (VppEnum.vl_api_ipsec_integ_alg_t.
                                IPSEC_API_INTEG_ALG_NONE),
                  'scapy-crypto': "AES-GCM",
                  'scapy-integ': "NULL",
                  'key': b"JPjyOWBeVEQiMe7hJPjyOWBe",
                  'salt': 0},
                 {'vpp-crypto': (VppEnum.vl_api_ipsec_crypto_alg_t.
                                 IPSEC_API_CRYPTO_ALG_AES_GCM_256),
                  'vpp-integ': (VppEnum.vl_api_ipsec_integ_alg_t.
                                IPSEC_API_INTEG_ALG_NONE),
                  'scapy-crypto': "AES-GCM",
                  'scapy-integ': "NULL",
                  'key': b"JPjyOWBeVEQiMe7hJPjyOWBeVEQiMe7h",
                  'salt': 9999},
                 {'vpp-crypto': (VppEnum.vl_api_ipsec_crypto_alg_t.
                                 IPSEC_API_CRYPTO_ALG_AES_CBC_128),
                  'vpp-integ': (VppEnum.vl_api_ipsec_integ_alg_t.
                                IPSEC_API_INTEG_ALG_SHA1_96),
                  'scapy-crypto': "AES-CBC",
                  'scapy-integ': "HMAC-SHA1-96",
                  'salt': 0,
                  'key': b"JPjyOWBeVEQiMe7h"},
                 {'vpp-crypto': (VppEnum.vl_api_ipsec_crypto_alg_t.
                                 IPSEC_API_CRYPTO_ALG_AES_CBC_192),
                  'vpp-integ': (VppEnum.vl_api_ipsec_integ_alg_t.
                                IPSEC_API_INTEG_ALG_SHA1_96),
                  'scapy-crypto': "AES-CBC",
                  'scapy-integ': "HMAC-SHA1-96",
                  'salt': 0,
                  'key': b"JPjyOWBeVEQiMe7hJPjyOWBe"},
                 {'vpp-crypto': (VppEnum.vl_api_ipsec_crypto_alg_t.
                                 IPSEC_API_CRYPTO_ALG_AES_CBC_256),
                  'vpp-integ': (VppEnum.vl_api_ipsec_integ_alg_t.
                                IPSEC_API_INTEG_ALG_SHA1_96),
                  'scapy-crypto': "AES-CBC",
                  'scapy-integ': "HMAC-SHA1-96",
                  'salt': 0,
                  'key': b"JPjyOWBeVEQiMe7hJPjyOWBeVEQiMe7h"},
                 {'vpp-crypto': (VppEnum.vl_api_ipsec_crypto_alg_t.
                                 IPSEC_API_CRYPTO_ALG_NONE),
                  'vpp-integ': (VppEnum.vl_api_ipsec_integ_alg_t.
                                IPSEC_API_INTEG_ALG_SHA1_96),
                  'scapy-crypto': "NULL",
                  'scapy-integ': "HMAC-SHA1-96",
                  'salt': 0,
                  'key': b"JPjyOWBeVEQiMe7hJPjyOWBeVEQiMe7h"}]

        for engine in engines:
            self.vapi.cli("set crypto handler all %s" % engine)

            #
            # loop through each of the algorithms
            #
            for algo in algos:
                # with self.subTest(algo=algo['scapy']):

                p = copy.copy(self.ipv4_params)
                p.auth_algo_vpp_id = algo['vpp-integ']
                p.crypt_algo_vpp_id = algo['vpp-crypto']
                p.crypt_algo = algo['scapy-crypto']
                p.auth_algo = algo['scapy-integ']
                p.crypt_key = algo['key']
                p.salt = algo['salt']

                self.config_network(p)

                self.verify_tun_44(p, count=127)
                c = p.tun_if.get_rx_stats()
                self.assertEqual(c['packets'], 127)
                c = p.tun_if.get_tx_stats()
                self.assertEqual(c['packets'], 127)

                #
                # rekey the tunnel
                #
                self.rekey(p)
                self.verify_tun_44(p, count=127)

                self.unconfig_network(p)
                p.tun_sa_out.remove_vpp_config()
                p.tun_sa_in.remove_vpp_config()


class TestIpsec6MultiTunIfEsp(TemplateIpsec, IpsecTun6):
    """ IPsec IPv6 Multi Tunnel interface """

    encryption_type = ESP
    tun6_encrypt_node_name = "esp6-encrypt-tun"
    tun6_decrypt_node_name = "esp6-decrypt-tun"

    def setUp(self):
        super(TestIpsec6MultiTunIfEsp, self).setUp()

        self.tun_if = self.pg0

        self.multi_params = []
        self.pg0.generate_remote_hosts(10)
        self.pg0.configure_ipv6_neighbors()

        for ii in range(10):
            p = copy.copy(self.ipv6_params)

            p.remote_tun_if_host = "1111::%d" % (ii + 1)
            p.scapy_tun_sa_id = p.scapy_tun_sa_id + ii
            p.scapy_tun_spi = p.scapy_tun_spi + ii
            p.vpp_tun_sa_id = p.vpp_tun_sa_id + ii
            p.vpp_tun_spi = p.vpp_tun_spi + ii

            p.scapy_tra_sa_id = p.scapy_tra_sa_id + ii
            p.scapy_tra_spi = p.scapy_tra_spi + ii
            p.vpp_tra_sa_id = p.vpp_tra_sa_id + ii
            p.vpp_tra_spi = p.vpp_tra_spi + ii

            p.tun_if = VppIpsecTunInterface(self, self.pg0, p.vpp_tun_spi,
                                            p.scapy_tun_spi,
                                            p.crypt_algo_vpp_id,
                                            p.crypt_key, p.crypt_key,
                                            p.auth_algo_vpp_id, p.auth_key,
                                            p.auth_key, is_ip6=True,
                                            dst=self.pg0.remote_hosts[ii].ip6)
            p.tun_if.add_vpp_config()
            p.tun_if.admin_up()
            p.tun_if.config_ip6()
            config_tun_params(p, self.encryption_type, p.tun_if)
            self.multi_params.append(p)

            r = VppIpRoute(self, p.remote_tun_if_host, 128,
                           [VppRoutePath(p.tun_if.remote_ip6,
                                         0xffffffff,
                                         proto=DpoProto.DPO_PROTO_IP6)])
            r.add_vpp_config()

    def tearDown(self):
        super(TestIpsec6MultiTunIfEsp, self).tearDown()

    def test_tun_66(self):
        """Multiple IPSEC tunnel interfaces """
        for p in self.multi_params:
            self.verify_tun_66(p, count=127)
            c = p.tun_if.get_rx_stats()
            self.assertEqual(c['packets'], 127)
            c = p.tun_if.get_tx_stats()
            self.assertEqual(c['packets'], 127)


class TestIpsecGreTebIfEsp(TemplateIpsec,
                           IpsecTun4Tests):
    """ Ipsec GRE TEB ESP - TUN tests """
    tun4_encrypt_node_name = "esp4-encrypt-tun"
    tun4_decrypt_node_name = "esp4-decrypt-tun"
    encryption_type = ESP
    omac = "00:11:22:33:44:55"

    def gen_encrypt_pkts(self, sa, sw_intf, src, dst, count=1,
                         payload_size=100):
        return [Ether(src=sw_intf.remote_mac, dst=sw_intf.local_mac) /
                sa.encrypt(IP(src=self.pg0.remote_ip4,
                              dst=self.pg0.local_ip4) /
                           GRE() /
                           Ether(dst=self.omac) /
                           IP(src="1.1.1.1", dst="1.1.1.2") /
                           UDP(sport=1144, dport=2233) /
                           Raw(b'X' * payload_size))
                for i in range(count)]

    def gen_pkts(self, sw_intf, src, dst, count=1,
                 payload_size=100):
        return [Ether(dst=self.omac) /
                IP(src="1.1.1.1", dst="1.1.1.2") /
                UDP(sport=1144, dport=2233) /
                Raw(b'X' * payload_size)
                for i in range(count)]

    def verify_decrypted(self, p, rxs):
        for rx in rxs:
            self.assert_equal(rx[Ether].dst, self.omac)
            self.assert_equal(rx[IP].dst, "1.1.1.2")

    def verify_encrypted(self, p, sa, rxs):
        for rx in rxs:
            try:
                pkt = sa.decrypt(rx[IP])
                if not pkt.haslayer(IP):
                    pkt = IP(pkt[Raw].load)
                self.assert_packet_checksums_valid(pkt)
                self.assert_equal(pkt[IP].dst, self.pg0.remote_ip4)
                self.assert_equal(pkt[IP].src, self.pg0.local_ip4)
                self.assertTrue(pkt.haslayer(GRE))
                e = pkt[Ether]
                self.assertEqual(e[Ether].dst, self.omac)
                self.assertEqual(e[IP].dst, "1.1.1.2")
            except (IndexError, AssertionError):
                self.logger.debug(ppp("Unexpected packet:", rx))
                try:
                    self.logger.debug(ppp("Decrypted packet:", pkt))
                except:
                    pass
                raise

    def setUp(self):
        super(TestIpsecGreTebIfEsp, self).setUp()

        self.tun_if = self.pg0

        p = self.ipv4_params

        bd1 = VppBridgeDomain(self, 1)
        bd1.add_vpp_config()

        p.tun_sa_out = VppIpsecSA(self, p.scapy_tun_sa_id, p.scapy_tun_spi,
                                  p.auth_algo_vpp_id, p.auth_key,
                                  p.crypt_algo_vpp_id, p.crypt_key,
                                  self.vpp_esp_protocol,
                                  self.pg0.local_ip4,
                                  self.pg0.remote_ip4)
        p.tun_sa_out.add_vpp_config()

        p.tun_sa_in = VppIpsecSA(self, p.vpp_tun_sa_id, p.vpp_tun_spi,
                                 p.auth_algo_vpp_id, p.auth_key,
                                 p.crypt_algo_vpp_id, p.crypt_key,
                                 self.vpp_esp_protocol,
                                 self.pg0.remote_ip4,
                                 self.pg0.local_ip4)
        p.tun_sa_in.add_vpp_config()

        p.tun_if = VppGreInterface(self,
                                   self.pg0.local_ip4,
                                   self.pg0.remote_ip4,
                                   type=(VppEnum.vl_api_gre_tunnel_type_t.
                                         GRE_API_TUNNEL_TYPE_TEB))
        p.tun_if.add_vpp_config()

        p.tun_protect = VppIpsecTunProtect(self,
                                           p.tun_if,
                                           p.tun_sa_out,
                                           [p.tun_sa_in])

        p.tun_protect.add_vpp_config()

        p.tun_if.admin_up()
        p.tun_if.config_ip4()
        config_tun_params(p, self.encryption_type, p.tun_if)

        VppBridgeDomainPort(self, bd1, p.tun_if).add_vpp_config()
        VppBridgeDomainPort(self, bd1, self.pg1).add_vpp_config()

        self.vapi.cli("clear ipsec sa")

    def tearDown(self):
        p = self.ipv4_params
        p.tun_if.unconfig_ip4()
        super(TestIpsecGreTebIfEsp, self).tearDown()


class TestIpsecGreIfEsp(TemplateIpsec,
                        IpsecTun4Tests):
    """ Ipsec GRE ESP - TUN tests """
    tun4_encrypt_node_name = "esp4-encrypt-tun"
    tun4_decrypt_node_name = "esp4-decrypt-tun"
    encryption_type = ESP

    def gen_encrypt_pkts(self, sa, sw_intf, src, dst, count=1,
                         payload_size=100):
        return [Ether(src=sw_intf.remote_mac, dst=sw_intf.local_mac) /
                sa.encrypt(IP(src=self.pg0.remote_ip4,
                              dst=self.pg0.local_ip4) /
                           GRE() /
                           IP(src=self.pg1.local_ip4,
                              dst=self.pg1.remote_ip4) /
                           UDP(sport=1144, dport=2233) /
                           Raw(b'X' * payload_size))
                for i in range(count)]

    def gen_pkts(self, sw_intf, src, dst, count=1,
                 payload_size=100):
        return [Ether(src=sw_intf.remote_mac, dst=sw_intf.local_mac) /
                IP(src="1.1.1.1", dst="1.1.1.2") /
                UDP(sport=1144, dport=2233) /
                Raw(b'X' * payload_size)
                for i in range(count)]

    def verify_decrypted(self, p, rxs):
        for rx in rxs:
            self.assert_equal(rx[Ether].dst, self.pg1.remote_mac)
            self.assert_equal(rx[IP].dst, self.pg1.remote_ip4)

    def verify_encrypted(self, p, sa, rxs):
        for rx in rxs:
            try:
                pkt = sa.decrypt(rx[IP])
                if not pkt.haslayer(IP):
                    pkt = IP(pkt[Raw].load)
                self.assert_packet_checksums_valid(pkt)
                self.assert_equal(pkt[IP].dst, self.pg0.remote_ip4)
                self.assert_equal(pkt[IP].src, self.pg0.local_ip4)
                self.assertTrue(pkt.haslayer(GRE))
                e = pkt[GRE]
                self.assertEqual(e[IP].dst, "1.1.1.2")
            except (IndexError, AssertionError):
                self.logger.debug(ppp("Unexpected packet:", rx))
                try:
                    self.logger.debug(ppp("Decrypted packet:", pkt))
                except:
                    pass
                raise

    def setUp(self):
        super(TestIpsecGreIfEsp, self).setUp()

        self.tun_if = self.pg0

        p = self.ipv4_params

        bd1 = VppBridgeDomain(self, 1)
        bd1.add_vpp_config()

        p.tun_sa_out = VppIpsecSA(self, p.scapy_tun_sa_id, p.scapy_tun_spi,
                                  p.auth_algo_vpp_id, p.auth_key,
                                  p.crypt_algo_vpp_id, p.crypt_key,
                                  self.vpp_esp_protocol,
                                  self.pg0.local_ip4,
                                  self.pg0.remote_ip4)
        p.tun_sa_out.add_vpp_config()

        p.tun_sa_in = VppIpsecSA(self, p.vpp_tun_sa_id, p.vpp_tun_spi,
                                 p.auth_algo_vpp_id, p.auth_key,
                                 p.crypt_algo_vpp_id, p.crypt_key,
                                 self.vpp_esp_protocol,
                                 self.pg0.remote_ip4,
                                 self.pg0.local_ip4)
        p.tun_sa_in.add_vpp_config()

        p.tun_if = VppGreInterface(self,
                                   self.pg0.local_ip4,
                                   self.pg0.remote_ip4)
        p.tun_if.add_vpp_config()

        p.tun_protect = VppIpsecTunProtect(self,
                                           p.tun_if,
                                           p.tun_sa_out,
                                           [p.tun_sa_in])
        p.tun_protect.add_vpp_config()

        p.tun_if.admin_up()
        p.tun_if.config_ip4()
        config_tun_params(p, self.encryption_type, p.tun_if)

        VppIpRoute(self, "1.1.1.2", 32,
                   [VppRoutePath(p.tun_if.remote_ip4,
                                 0xffffffff)]).add_vpp_config()

    def tearDown(self):
        p = self.ipv4_params
        p.tun_if.unconfig_ip4()
        super(TestIpsecGreIfEsp, self).tearDown()


class TestIpsecGreIfEspTra(TemplateIpsec,
                           IpsecTun4Tests):
    """ Ipsec GRE ESP - TRA tests """
    tun4_encrypt_node_name = "esp4-encrypt-tun"
    tun4_decrypt_node_name = "esp4-decrypt-tun"
    encryption_type = ESP

    def gen_encrypt_pkts(self, sa, sw_intf, src, dst, count=1,
                         payload_size=100):
        return [Ether(src=sw_intf.remote_mac, dst=sw_intf.local_mac) /
                sa.encrypt(IP(src=self.pg0.remote_ip4,
                              dst=self.pg0.local_ip4) /
                           GRE() /
                           IP(src=self.pg1.local_ip4,
                              dst=self.pg1.remote_ip4) /
                           UDP(sport=1144, dport=2233) /
                           Raw(b'X' * payload_size))
                for i in range(count)]

    def gen_pkts(self, sw_intf, src, dst, count=1,
                 payload_size=100):
        return [Ether(src=sw_intf.remote_mac, dst=sw_intf.local_mac) /
                IP(src="1.1.1.1", dst="1.1.1.2") /
                UDP(sport=1144, dport=2233) /
                Raw(b'X' * payload_size)
                for i in range(count)]

    def verify_decrypted(self, p, rxs):
        for rx in rxs:
            self.assert_equal(rx[Ether].dst, self.pg1.remote_mac)
            self.assert_equal(rx[IP].dst, self.pg1.remote_ip4)

    def verify_encrypted(self, p, sa, rxs):
        for rx in rxs:
            try:
                pkt = sa.decrypt(rx[IP])
                if not pkt.haslayer(IP):
                    pkt = IP(pkt[Raw].load)
                self.assert_packet_checksums_valid(pkt)
                self.assertTrue(pkt.haslayer(GRE))
                e = pkt[GRE]
                self.assertEqual(e[IP].dst, "1.1.1.2")
            except (IndexError, AssertionError):
                self.logger.debug(ppp("Unexpected packet:", rx))
                try:
                    self.logger.debug(ppp("Decrypted packet:", pkt))
                except:
                    pass
                raise

    def setUp(self):
        super(TestIpsecGreIfEspTra, self).setUp()

        self.tun_if = self.pg0

        p = self.ipv4_params

        bd1 = VppBridgeDomain(self, 1)
        bd1.add_vpp_config()

        p.tun_sa_out = VppIpsecSA(self, p.scapy_tun_sa_id, p.scapy_tun_spi,
                                  p.auth_algo_vpp_id, p.auth_key,
                                  p.crypt_algo_vpp_id, p.crypt_key,
                                  self.vpp_esp_protocol)
        p.tun_sa_out.add_vpp_config()

        p.tun_sa_in = VppIpsecSA(self, p.vpp_tun_sa_id, p.vpp_tun_spi,
                                 p.auth_algo_vpp_id, p.auth_key,
                                 p.crypt_algo_vpp_id, p.crypt_key,
                                 self.vpp_esp_protocol)
        p.tun_sa_in.add_vpp_config()

        p.tun_if = VppGreInterface(self,
                                   self.pg0.local_ip4,
                                   self.pg0.remote_ip4)
        p.tun_if.add_vpp_config()

        p.tun_protect = VppIpsecTunProtect(self,
                                           p.tun_if,
                                           p.tun_sa_out,
                                           [p.tun_sa_in])
        p.tun_protect.add_vpp_config()

        p.tun_if.admin_up()
        p.tun_if.config_ip4()
        config_tun_params(p, self.encryption_type, p.tun_if)

        VppIpRoute(self, "1.1.1.2", 32,
                   [VppRoutePath(p.tun_if.remote_ip4,
                                 0xffffffff)]).add_vpp_config()

    def tearDown(self):
        p = self.ipv4_params
        p.tun_if.unconfig_ip4()
        super(TestIpsecGreIfEspTra, self).tearDown()


class TemplateIpsec4TunProtect(object):
    """ IPsec IPv4 Tunnel protect """

    encryption_type = ESP
    tun4_encrypt_node_name = "esp4-encrypt-tun"
    tun4_decrypt_node_name = "esp4-decrypt-tun"
    tun4_input_node = "ipsec4-tun-input"

    def config_sa_tra(self, p):
        config_tun_params(p, self.encryption_type, p.tun_if)

        p.tun_sa_out = VppIpsecSA(self, p.scapy_tun_sa_id, p.scapy_tun_spi,
                                  p.auth_algo_vpp_id, p.auth_key,
                                  p.crypt_algo_vpp_id, p.crypt_key,
                                  self.vpp_esp_protocol,
                                  flags=p.flags)
        p.tun_sa_out.add_vpp_config()

        p.tun_sa_in = VppIpsecSA(self, p.vpp_tun_sa_id, p.vpp_tun_spi,
                                 p.auth_algo_vpp_id, p.auth_key,
                                 p.crypt_algo_vpp_id, p.crypt_key,
                                 self.vpp_esp_protocol,
                                 flags=p.flags)
        p.tun_sa_in.add_vpp_config()

    def config_sa_tun(self, p):
        config_tun_params(p, self.encryption_type, p.tun_if)

        p.tun_sa_out = VppIpsecSA(self, p.scapy_tun_sa_id, p.scapy_tun_spi,
                                  p.auth_algo_vpp_id, p.auth_key,
                                  p.crypt_algo_vpp_id, p.crypt_key,
                                  self.vpp_esp_protocol,
                                  self.tun_if.remote_addr[p.addr_type],
                                  self.tun_if.local_addr[p.addr_type],
                                  flags=p.flags)
        p.tun_sa_out.add_vpp_config()

        p.tun_sa_in = VppIpsecSA(self, p.vpp_tun_sa_id, p.vpp_tun_spi,
                                 p.auth_algo_vpp_id, p.auth_key,
                                 p.crypt_algo_vpp_id, p.crypt_key,
                                 self.vpp_esp_protocol,
                                 self.tun_if.remote_addr[p.addr_type],
                                 self.tun_if.local_addr[p.addr_type],
                                 flags=p.flags)
        p.tun_sa_in.add_vpp_config()

    def config_protect(self, p):
        p.tun_protect = VppIpsecTunProtect(self,
                                           p.tun_if,
                                           p.tun_sa_out,
                                           [p.tun_sa_in])
        p.tun_protect.add_vpp_config()

    def config_network(self, p):
        p.tun_if = VppIpIpTunInterface(self, self.pg0,
                                       self.pg0.local_ip4,
                                       self.pg0.remote_ip4)
        p.tun_if.add_vpp_config()
        p.tun_if.admin_up()
        p.tun_if.config_ip4()
        p.tun_if.config_ip6()

        p.route = VppIpRoute(self, p.remote_tun_if_host, 32,
                             [VppRoutePath(p.tun_if.remote_ip4,
                                           0xffffffff)])
        p.route.add_vpp_config()
        r = VppIpRoute(self, p.remote_tun_if_host6, 128,
                       [VppRoutePath(p.tun_if.remote_ip6,
                                     0xffffffff,
                                     proto=DpoProto.DPO_PROTO_IP6)])
        r.add_vpp_config()

    def unconfig_network(self, p):
        p.route.remove_vpp_config()
        p.tun_if.remove_vpp_config()

    def unconfig_protect(self, p):
        p.tun_protect.remove_vpp_config()

    def unconfig_sa(self, p):
        p.tun_sa_out.remove_vpp_config()
        p.tun_sa_in.remove_vpp_config()


class TestIpsec4TunProtect(TemplateIpsec,
                           TemplateIpsec4TunProtect,
                           IpsecTun4):
    """ IPsec IPv4 Tunnel protect - transport mode"""

    def setUp(self):
        super(TestIpsec4TunProtect, self).setUp()

        self.tun_if = self.pg0

    def tearDown(self):
        super(TestIpsec4TunProtect, self).tearDown()

    def test_tun_44(self):
        """IPSEC tunnel protect"""

        p = self.ipv4_params

        self.config_network(p)
        self.config_sa_tra(p)
        self.config_protect(p)

        self.verify_tun_44(p, count=127)
        c = p.tun_if.get_rx_stats()
        self.assertEqual(c['packets'], 127)
        c = p.tun_if.get_tx_stats()
        self.assertEqual(c['packets'], 127)

        self.vapi.cli("clear ipsec sa")
        self.verify_tun_64(p, count=127)
        c = p.tun_if.get_rx_stats()
        self.assertEqual(c['packets'], 254)
        c = p.tun_if.get_tx_stats()
        self.assertEqual(c['packets'], 254)

        # rekey - create new SAs and update the tunnel protection
        np = copy.copy(p)
        np.crypt_key = b'X' + p.crypt_key[1:]
        np.scapy_tun_spi += 100
        np.scapy_tun_sa_id += 1
        np.vpp_tun_spi += 100
        np.vpp_tun_sa_id += 1
        np.tun_if.local_spi = p.vpp_tun_spi
        np.tun_if.remote_spi = p.scapy_tun_spi

        self.config_sa_tra(np)
        self.config_protect(np)
        self.unconfig_sa(p)

        self.verify_tun_44(np, count=127)
        c = p.tun_if.get_rx_stats()
        self.assertEqual(c['packets'], 381)
        c = p.tun_if.get_tx_stats()
        self.assertEqual(c['packets'], 381)

        # teardown
        self.unconfig_protect(np)
        self.unconfig_sa(np)
        self.unconfig_network(p)


class TestIpsec4TunProtectUdp(TemplateIpsec,
                              TemplateIpsec4TunProtect,
                              IpsecTun4):
    """ IPsec IPv4 Tunnel protect - transport mode"""

    def setUp(self):
        super(TestIpsec4TunProtectUdp, self).setUp()

        self.tun_if = self.pg0

        p = self.ipv4_params
        p.flags = (VppEnum.vl_api_ipsec_sad_flags_t.
                   IPSEC_API_SAD_FLAG_UDP_ENCAP)
        p.nat_header = UDP(sport=5454, dport=4500)
        self.config_network(p)
        self.config_sa_tra(p)
        self.config_protect(p)

    def tearDown(self):
        p = self.ipv4_params
        self.unconfig_protect(p)
        self.unconfig_sa(p)
        self.unconfig_network(p)
        super(TestIpsec4TunProtectUdp, self).tearDown()

    def test_tun_44(self):
        """IPSEC UDP tunnel protect"""

        p = self.ipv4_params

        self.verify_tun_44(p, count=127)
        c = p.tun_if.get_rx_stats()
        self.assertEqual(c['packets'], 127)
        c = p.tun_if.get_tx_stats()
        self.assertEqual(c['packets'], 127)

    def test_keepalive(self):
        """ IPSEC NAT Keepalive """
        self.verify_keepalive(self.ipv4_params)


class TestIpsec4TunProtectTun(TemplateIpsec,
                              TemplateIpsec4TunProtect,
                              IpsecTun4):
    """ IPsec IPv4 Tunnel protect - tunnel mode"""

    encryption_type = ESP
    tun4_encrypt_node_name = "esp4-encrypt-tun"
    tun4_decrypt_node_name = "esp4-decrypt-tun"

    def setUp(self):
        super(TestIpsec4TunProtectTun, self).setUp()

        self.tun_if = self.pg0

    def tearDown(self):
        super(TestIpsec4TunProtectTun, self).tearDown()

    def gen_encrypt_pkts(self, sa, sw_intf, src, dst, count=1,
                         payload_size=100):
        return [Ether(src=sw_intf.remote_mac, dst=sw_intf.local_mac) /
                sa.encrypt(IP(src=sw_intf.remote_ip4,
                              dst=sw_intf.local_ip4) /
                           IP(src=src, dst=dst) /
                           UDP(sport=1144, dport=2233) /
                           Raw(b'X' * payload_size))
                for i in range(count)]

    def gen_pkts(self, sw_intf, src, dst, count=1,
                 payload_size=100):
        return [Ether(src=sw_intf.remote_mac, dst=sw_intf.local_mac) /
                IP(src=src, dst=dst) /
                UDP(sport=1144, dport=2233) /
                Raw(b'X' * payload_size)
                for i in range(count)]

    def verify_decrypted(self, p, rxs):
        for rx in rxs:
            self.assert_equal(rx[IP].dst, self.pg1.remote_ip4)
            self.assert_equal(rx[IP].src, p.remote_tun_if_host)
            self.assert_packet_checksums_valid(rx)

    def verify_encrypted(self, p, sa, rxs):
        for rx in rxs:
            try:
                pkt = sa.decrypt(rx[IP])
                if not pkt.haslayer(IP):
                    pkt = IP(pkt[Raw].load)
                self.assert_packet_checksums_valid(pkt)
                self.assert_equal(pkt[IP].dst, self.pg0.remote_ip4)
                self.assert_equal(pkt[IP].src, self.pg0.local_ip4)
                inner = pkt[IP].payload
                self.assertEqual(inner[IP][IP].dst, p.remote_tun_if_host)

            except (IndexError, AssertionError):
                self.logger.debug(ppp("Unexpected packet:", rx))
                try:
                    self.logger.debug(ppp("Decrypted packet:", pkt))
                except:
                    pass
                raise

    def test_tun_44(self):
        """IPSEC tunnel protect """

        p = self.ipv4_params

        self.config_network(p)
        self.config_sa_tun(p)
        self.config_protect(p)

        self.verify_tun_44(p, count=127)

        c = p.tun_if.get_rx_stats()
        self.assertEqual(c['packets'], 127)
        c = p.tun_if.get_tx_stats()
        self.assertEqual(c['packets'], 127)

        # rekey - create new SAs and update the tunnel protection
        np = copy.copy(p)
        np.crypt_key = b'X' + p.crypt_key[1:]
        np.scapy_tun_spi += 100
        np.scapy_tun_sa_id += 1
        np.vpp_tun_spi += 100
        np.vpp_tun_sa_id += 1
        np.tun_if.local_spi = p.vpp_tun_spi
        np.tun_if.remote_spi = p.scapy_tun_spi

        self.config_sa_tun(np)
        self.config_protect(np)
        self.unconfig_sa(p)

        self.verify_tun_44(np, count=127)
        c = p.tun_if.get_rx_stats()
        self.assertEqual(c['packets'], 254)
        c = p.tun_if.get_tx_stats()
        self.assertEqual(c['packets'], 254)

        # teardown
        self.unconfig_protect(np)
        self.unconfig_sa(np)
        self.unconfig_network(p)


class TemplateIpsec6TunProtect(object):
    """ IPsec IPv6 Tunnel protect """

    def config_sa_tra(self, p):
        config_tun_params(p, self.encryption_type, p.tun_if)

        p.tun_sa_out = VppIpsecSA(self, p.scapy_tun_sa_id, p.scapy_tun_spi,
                                  p.auth_algo_vpp_id, p.auth_key,
                                  p.crypt_algo_vpp_id, p.crypt_key,
                                  self.vpp_esp_protocol)
        p.tun_sa_out.add_vpp_config()

        p.tun_sa_in = VppIpsecSA(self, p.vpp_tun_sa_id, p.vpp_tun_spi,
                                 p.auth_algo_vpp_id, p.auth_key,
                                 p.crypt_algo_vpp_id, p.crypt_key,
                                 self.vpp_esp_protocol)
        p.tun_sa_in.add_vpp_config()

    def config_sa_tun(self, p):
        config_tun_params(p, self.encryption_type, p.tun_if)

        p.tun_sa_out = VppIpsecSA(self, p.scapy_tun_sa_id, p.scapy_tun_spi,
                                  p.auth_algo_vpp_id, p.auth_key,
                                  p.crypt_algo_vpp_id, p.crypt_key,
                                  self.vpp_esp_protocol,
                                  self.tun_if.remote_addr[p.addr_type],
                                  self.tun_if.local_addr[p.addr_type])
        p.tun_sa_out.add_vpp_config()

        p.tun_sa_in = VppIpsecSA(self, p.vpp_tun_sa_id, p.vpp_tun_spi,
                                 p.auth_algo_vpp_id, p.auth_key,
                                 p.crypt_algo_vpp_id, p.crypt_key,
                                 self.vpp_esp_protocol,
                                 self.tun_if.remote_addr[p.addr_type],
                                 self.tun_if.local_addr[p.addr_type])
        p.tun_sa_in.add_vpp_config()

    def config_protect(self, p):
        p.tun_protect = VppIpsecTunProtect(self,
                                           p.tun_if,
                                           p.tun_sa_out,
                                           [p.tun_sa_in])
        p.tun_protect.add_vpp_config()

    def config_network(self, p):
        p.tun_if = VppIpIpTunInterface(self, self.pg0,
                                       self.pg0.local_ip6,
                                       self.pg0.remote_ip6)
        p.tun_if.add_vpp_config()
        p.tun_if.admin_up()
        p.tun_if.config_ip6()
        p.tun_if.config_ip4()

        p.route = VppIpRoute(self, p.remote_tun_if_host, 128,
                             [VppRoutePath(p.tun_if.remote_ip6,
                                           0xffffffff,
                                           proto=DpoProto.DPO_PROTO_IP6)])
        p.route.add_vpp_config()
        r = VppIpRoute(self, p.remote_tun_if_host4, 32,
                       [VppRoutePath(p.tun_if.remote_ip4,
                                     0xffffffff)])
        r.add_vpp_config()

    def unconfig_network(self, p):
        p.route.remove_vpp_config()
        p.tun_if.remove_vpp_config()

    def unconfig_protect(self, p):
        p.tun_protect.remove_vpp_config()

    def unconfig_sa(self, p):
        p.tun_sa_out.remove_vpp_config()
        p.tun_sa_in.remove_vpp_config()


class TestIpsec6TunProtect(TemplateIpsec,
                           TemplateIpsec6TunProtect,
                           IpsecTun6):
    """ IPsec IPv6 Tunnel protect - transport mode"""

    encryption_type = ESP
    tun6_encrypt_node_name = "esp6-encrypt-tun"
    tun6_decrypt_node_name = "esp6-decrypt-tun"

    def setUp(self):
        super(TestIpsec6TunProtect, self).setUp()

        self.tun_if = self.pg0

    def tearDown(self):
        super(TestIpsec6TunProtect, self).tearDown()

    def test_tun_66(self):
        """IPSEC tunnel protect"""

        p = self.ipv6_params

        self.config_network(p)
        self.config_sa_tra(p)
        self.config_protect(p)

        self.verify_tun_66(p, count=127)
        c = p.tun_if.get_rx_stats()
        self.assertEqual(c['packets'], 127)
        c = p.tun_if.get_tx_stats()
        self.assertEqual(c['packets'], 127)

        # rekey - create new SAs and update the tunnel protection
        np = copy.copy(p)
        np.crypt_key = b'X' + p.crypt_key[1:]
        np.scapy_tun_spi += 100
        np.scapy_tun_sa_id += 1
        np.vpp_tun_spi += 100
        np.vpp_tun_sa_id += 1
        np.tun_if.local_spi = p.vpp_tun_spi
        np.tun_if.remote_spi = p.scapy_tun_spi

        self.config_sa_tra(np)
        self.config_protect(np)
        self.unconfig_sa(p)

        self.verify_tun_66(np, count=127)
        c = p.tun_if.get_rx_stats()
        self.assertEqual(c['packets'], 254)
        c = p.tun_if.get_tx_stats()
        self.assertEqual(c['packets'], 254)

        # 3 phase rekey
        #  1) add two input SAs [old, new]
        #  2) swap output SA to [new]
        #  3) use only [new] input SA
        np3 = copy.copy(np)
        np3.crypt_key = b'Z' + p.crypt_key[1:]
        np3.scapy_tun_spi += 100
        np3.scapy_tun_sa_id += 1
        np3.vpp_tun_spi += 100
        np3.vpp_tun_sa_id += 1
        np3.tun_if.local_spi = p.vpp_tun_spi
        np3.tun_if.remote_spi = p.scapy_tun_spi

        self.config_sa_tra(np3)

        # step 1;
        p.tun_protect.update_vpp_config(np.tun_sa_out,
                                        [np.tun_sa_in, np3.tun_sa_in])
        self.verify_tun_66(np, np, count=127)
        self.verify_tun_66(np3, np, count=127)

        # step 2;
        p.tun_protect.update_vpp_config(np3.tun_sa_out,
                                        [np.tun_sa_in, np3.tun_sa_in])
        self.verify_tun_66(np, np3, count=127)
        self.verify_tun_66(np3, np3, count=127)

        # step 1;
        p.tun_protect.update_vpp_config(np3.tun_sa_out,
                                        [np3.tun_sa_in])
        self.verify_tun_66(np3, np3, count=127)
        self.verify_drop_tun_66(np, count=127)

        c = p.tun_if.get_rx_stats()
        self.assertEqual(c['packets'], 127*7)
        c = p.tun_if.get_tx_stats()
        self.assertEqual(c['packets'], 127*7)
        self.unconfig_sa(np)

        # teardown
        self.unconfig_protect(np3)
        self.unconfig_sa(np3)
        self.unconfig_network(p)

    def test_tun_46(self):
        """IPSEC tunnel protect"""

        p = self.ipv6_params

        self.config_network(p)
        self.config_sa_tra(p)
        self.config_protect(p)

        self.verify_tun_46(p, count=127)
        c = p.tun_if.get_rx_stats()
        self.assertEqual(c['packets'], 127)
        c = p.tun_if.get_tx_stats()
        self.assertEqual(c['packets'], 127)

        # teardown
        self.unconfig_protect(p)
        self.unconfig_sa(p)
        self.unconfig_network(p)


class TestIpsec6TunProtectTun(TemplateIpsec,
                              TemplateIpsec6TunProtect,
                              IpsecTun6):
    """ IPsec IPv6 Tunnel protect - tunnel mode"""

    encryption_type = ESP
    tun6_encrypt_node_name = "esp6-encrypt-tun"
    tun6_decrypt_node_name = "esp6-decrypt-tun"

    def setUp(self):
        super(TestIpsec6TunProtectTun, self).setUp()

        self.tun_if = self.pg0

    def tearDown(self):
        super(TestIpsec6TunProtectTun, self).tearDown()

    def gen_encrypt_pkts6(self, sa, sw_intf, src, dst, count=1,
                          payload_size=100):
        return [Ether(src=sw_intf.remote_mac, dst=sw_intf.local_mac) /
                sa.encrypt(IPv6(src=sw_intf.remote_ip6,
                                dst=sw_intf.local_ip6) /
                           IPv6(src=src, dst=dst) /
                           UDP(sport=1166, dport=2233) /
                           Raw(b'X' * payload_size))
                for i in range(count)]

    def gen_pkts6(self, sw_intf, src, dst, count=1,
                  payload_size=100):
        return [Ether(src=sw_intf.remote_mac, dst=sw_intf.local_mac) /
                IPv6(src=src, dst=dst) /
                UDP(sport=1166, dport=2233) /
                Raw(b'X' * payload_size)
                for i in range(count)]

    def verify_decrypted6(self, p, rxs):
        for rx in rxs:
            self.assert_equal(rx[IPv6].dst, self.pg1.remote_ip6)
            self.assert_equal(rx[IPv6].src, p.remote_tun_if_host)
            self.assert_packet_checksums_valid(rx)

    def verify_encrypted6(self, p, sa, rxs):
        for rx in rxs:
            try:
                pkt = sa.decrypt(rx[IPv6])
                if not pkt.haslayer(IPv6):
                    pkt = IPv6(pkt[Raw].load)
                self.assert_packet_checksums_valid(pkt)
                self.assert_equal(pkt[IPv6].dst, self.pg0.remote_ip6)
                self.assert_equal(pkt[IPv6].src, self.pg0.local_ip6)
                inner = pkt[IPv6].payload
                self.assertEqual(inner[IPv6][IPv6].dst, p.remote_tun_if_host)

            except (IndexError, AssertionError):
                self.logger.debug(ppp("Unexpected packet:", rx))
                try:
                    self.logger.debug(ppp("Decrypted packet:", pkt))
                except:
                    pass
                raise

    def test_tun_66(self):
        """IPSEC tunnel protect """

        p = self.ipv6_params

        self.config_network(p)
        self.config_sa_tun(p)
        self.config_protect(p)

        self.verify_tun_66(p, count=127)

        c = p.tun_if.get_rx_stats()
        self.assertEqual(c['packets'], 127)
        c = p.tun_if.get_tx_stats()
        self.assertEqual(c['packets'], 127)

        # rekey - create new SAs and update the tunnel protection
        np = copy.copy(p)
        np.crypt_key = b'X' + p.crypt_key[1:]
        np.scapy_tun_spi += 100
        np.scapy_tun_sa_id += 1
        np.vpp_tun_spi += 100
        np.vpp_tun_sa_id += 1
        np.tun_if.local_spi = p.vpp_tun_spi
        np.tun_if.remote_spi = p.scapy_tun_spi

        self.config_sa_tun(np)
        self.config_protect(np)
        self.unconfig_sa(p)

        self.verify_tun_66(np, count=127)
        c = p.tun_if.get_rx_stats()
        self.assertEqual(c['packets'], 254)
        c = p.tun_if.get_tx_stats()
        self.assertEqual(c['packets'], 254)

        # teardown
        self.unconfig_protect(np)
        self.unconfig_sa(np)
        self.unconfig_network(p)


if __name__ == '__main__':
    unittest.main(testRunner=VppTestRunner)