Revert "Revert "ipsec: VPP-1316 calculate IP/TCP/UDP inner checksums""

This reverts commit e0d2bd6bd7fc59c0c6ac48195d7f825dc99bfd91.

Change-Id: If491e16f9ea66b2493a6a7c7f3c684ed585f8f51
Signed-off-by: Klement Sekera <ksekera@cisco.com>

13 files changed, 634 insertions, 574 deletions

diff --git a/test/bfd.py b/test/bfd.py
index 452a1804988..d99bbf6165c 100644
--- a/test/bfd.py
+++ b/test/bfd.py
@@ -35,9 +35,6 @@ class BFDDiagCode(NumericConstant):
         reverse_concatenated_path_down: "Reverse Concatenated Path Down",
     }
 
-    def __init__(self, value):
-        NumericConstant.__init__(self, value)
-
 
 class BFDState(NumericConstant):
     """ BFD State """
@@ -53,9 +50,6 @@ class BFDState(NumericConstant):
         up: "Up",
     }
 
-    def __init__(self, value):
-        NumericConstant.__init__(self, value)
-
 
 class BFDAuthType(NumericConstant):
     """ BFD Authentication Type """
@@ -75,9 +69,6 @@ class BFDAuthType(NumericConstant):
         meticulous_keyed_sha1: "Meticulous Keyed SHA1",
     }
 
-    def __init__(self, value):
-        NumericConstant.__init__(self, value)
-
 
 def bfd_is_auth_used(pkt):
     """ is packet authenticated? """
@@ -148,6 +139,7 @@ class BFD(Packet):
         return self.sprintf("BFD(my_disc=%BFD.my_discriminator%,"
                             "your_disc=%BFD.your_discriminator%)")
 
+
 # glue the BFD packet class to scapy parser
 bind_layers(UDP, BFD, dport=BFD.udp_dport)
 
@@ -169,6 +161,7 @@ class BFD_vpp_echo(Packet):
             "BFD_VPP_ECHO(disc=%BFD_VPP_ECHO.discriminator%,"
             "expire_time_clocks=%BFD_VPP_ECHO.expire_time_clocks%)")
 
+
 # glue the BFD echo packet class to scapy parser
 bind_layers(UDP, BFD_vpp_echo, dport=BFD_vpp_echo.udp_dport)
 
diff --git a/test/discover_tests.py b/test/discover_tests.py
index eea594107b6..99016e2845e 100755
--- a/test/discover_tests.py
+++ b/test/discover_tests.py
@@ -30,7 +30,7 @@ def discover_tests(directory, callback):
                 continue
             if not issubclass(cls, unittest.TestCase):
                 continue
-            if name == "VppTestCase":
+            if name == "VppTestCase" or name.startswith("Template"):
                 continue
             for method in dir(cls):
                 if not callable(getattr(cls, method)):
diff --git a/test/framework.py b/test/framework.py
index f90197b9b6f..be8c209f4ea 100644
--- a/test/framework.py
+++ b/test/framework.py
@@ -25,6 +25,7 @@ from vpp_papi_provider import VppPapiProvider
 from log import RED, GREEN, YELLOW, double_line_delim, single_line_delim, \
     getLogger, colorize
 from vpp_object import VppObjectRegistry
+from util import ppp
 from scapy.layers.inet import IPerror, TCPerror, UDPerror, ICMPerror
 from scapy.layers.inet6 import ICMPv6DestUnreach, ICMPv6EchoRequest
 from scapy.layers.inet6 import ICMPv6EchoReply
@@ -735,11 +736,14 @@ class VppTestCase(unittest.TestCase):
 
     def assert_packet_checksums_valid(self, packet,
                                       ignore_zero_udp_checksums=True):
+        received = packet.__class__(str(packet))
+        self.logger.debug(
+            ppp("Verifying packet checksums for packet:", received))
         udp_layers = ['UDP', 'UDPerror']
         checksum_fields = ['cksum', 'chksum']
         checksums = []
         counter = 0
-        temp = packet.__class__(str(packet))
+        temp = received.__class__(str(received))
         while True:
             layer = temp.getlayer(counter)
             if layer:
@@ -754,12 +758,17 @@ class VppTestCase(unittest.TestCase):
             else:
                 break
             counter = counter + 1
+        if 0 == len(checksums):
+            return
         temp = temp.__class__(str(temp))
         for layer, cf in checksums:
-            self.assert_equal(getattr(packet[layer], cf),
-                              getattr(temp[layer], cf),
-                              "packet checksum on layer #%d: %s" % (
-                                  layer, temp[layer].name))
+            calc_sum = getattr(temp[layer], cf)
+            self.assert_equal(
+                getattr(received[layer], cf), calc_sum,
+                "packet checksum on layer #%d: %s" % (layer, temp[layer].name))
+            self.logger.debug(
+                "Checksum field `%s` on `%s` layer has correct value `%s`" %
+                (cf, temp[layer].name, calc_sum))
 
     def assert_checksum_valid(self, received_packet, layer,
                               field_name='chksum',
diff --git a/test/template_ipsec.py b/test/template_ipsec.py
new file mode 100644
index 00000000000..9d95185cb9e
--- /dev/null
+++ b/test/template_ipsec.py
@@ -0,0 +1,208 @@
+import unittest
+
+from scapy.layers.inet import IP, ICMP, TCP
+from scapy.layers.ipsec import SecurityAssociation
+from scapy.layers.l2 import Ether, Raw
+
+from framework import VppTestCase, VppTestRunner
+from util import ppp
+
+
+class TemplateIpsec(VppTestCase):
+    """
+    TRANSPORT MODE:
+
+     ------   encrypt   ---
+    |tra_if| <-------> |VPP|
+     ------   decrypt   ---
+
+    TUNNEL MODE:
+
+     ------   encrypt   ---   plain   ---
+    |tun_if| <-------  |VPP| <------ |pg1|
+     ------             ---           ---
+
+     ------   decrypt   ---   plain   ---
+    |tun_if| ------->  |VPP| ------> |pg1|
+     ------             ---           ---
+    """
+
+    remote_tun_if_host = '1.1.1.1'
+    payload = "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
+
+    tun_spd_id = 1
+    scapy_tun_sa_id = 10
+    scapy_tun_spi = 1001
+    vpp_tun_sa_id = 20
+    vpp_tun_spi = 1000
+
+    tra_spd_id = 2
+    scapy_tra_sa_id = 30
+    scapy_tra_spi = 2001
+    vpp_tra_sa_id = 40
+    vpp_tra_spi = 2000
+
+    vpp_esp_protocol = 1
+    vpp_ah_protocol = 0
+
+    auth_algo_vpp_id = 2  # internal VPP enum value for SHA1_96
+    auth_algo = 'HMAC-SHA1-96'  # scapy name
+    auth_key = 'C91KUR9GYMm5GfkEvNjX'
+
+    crypt_algo_vpp_id = 1  # internal VPP enum value for AES_CBC_128
+    crypt_algo = 'AES-CBC'  # scapy name
+    crypt_key = 'JPjyOWBeVEQiMe7h'
+
+    @classmethod
+    def setUpClass(cls):
+        super(TemplateIpsec, cls).setUpClass()
+        cls.create_pg_interfaces(range(3))
+        cls.interfaces = list(cls.pg_interfaces)
+        for i in cls.interfaces:
+            i.admin_up()
+            i.config_ip4()
+            i.resolve_arp()
+
+    def tearDown(self):
+        super(TemplateIpsec, self).tearDown()
+        if not self.vpp_dead:
+            self.vapi.cli("show hardware")
+
+    def send_and_expect(self, input, pkts, output, count=1):
+        input.add_stream(pkts)
+        self.pg_enable_capture(self.pg_interfaces)
+        self.pg_start()
+        rx = output.get_capture(count)
+        return rx
+
+    def gen_encrypt_pkts(self, sa, sw_intf, src, dst, count=1):
+        return [Ether(src=sw_intf.remote_mac, dst=sw_intf.local_mac) /
+                sa.encrypt(IP(src=src, dst=dst) / ICMP() / self.payload)
+                for i in range(count)]
+
+    def gen_pkts(self, sw_intf, src, dst, count=1):
+        return [Ether(src=sw_intf.remote_mac, dst=sw_intf.local_mac) /
+                IP(src=src, dst=dst) / ICMP() / self.payload
+                for i in range(count)]
+
+    def configure_sa_tun(self):
+        scapy_tun_sa = SecurityAssociation(self.encryption_type,
+                                           spi=self.vpp_tun_spi,
+                                           crypt_algo=self.crypt_algo,
+                                           crypt_key=self.crypt_key,
+                                           auth_algo=self.auth_algo,
+                                           auth_key=self.auth_key,
+                                           tunnel_header=IP(
+                                               src=self.tun_if.remote_ip4,
+                                               dst=self.tun_if.local_ip4))
+        vpp_tun_sa = SecurityAssociation(self.encryption_type,
+                                         spi=self.scapy_tun_spi,
+                                         crypt_algo=self.crypt_algo,
+                                         crypt_key=self.crypt_key,
+                                         auth_algo=self.auth_algo,
+                                         auth_key=self.auth_key,
+                                         tunnel_header=IP(
+                                             dst=self.tun_if.remote_ip4,
+                                             src=self.tun_if.local_ip4))
+        return vpp_tun_sa, scapy_tun_sa
+
+    def configure_sa_tra(self):
+        scapy_tra_sa = SecurityAssociation(self.encryption_type,
+                                           spi=self.vpp_tra_spi,
+                                           crypt_algo=self.crypt_algo,
+                                           crypt_key=self.crypt_key,
+                                           auth_algo=self.auth_algo,
+                                           auth_key=self.auth_key)
+        vpp_tra_sa = SecurityAssociation(self.encryption_type,
+                                         spi=self.scapy_tra_spi,
+                                         crypt_algo=self.crypt_algo,
+                                         crypt_key=self.crypt_key,
+                                         auth_algo=self.auth_algo,
+                                         auth_key=self.auth_key)
+        return vpp_tra_sa, scapy_tra_sa
+
+
+class IpsecTcpTests(object):
+    def test_tcp_checksum(self):
+        """ verify checksum correctness for vpp generated packets """
+        self.vapi.cli("test http server")
+        vpp_tun_sa, scapy_tun_sa = self.configure_sa_tun()
+        send = (Ether(src=self.tun_if.remote_mac, dst=self.tun_if.local_mac) /
+                scapy_tun_sa.encrypt(IP(src=self.remote_tun_if_host,
+                                        dst=self.tun_if.local_ip4) /
+                                     TCP(flags='S', dport=80)))
+        self.logger.debug(ppp("Sending packet:", send))
+        recv = self.send_and_expect(self.tun_if, [send], self.tun_if, 1)
+        recv = recv[0]
+        decrypted = vpp_tun_sa.decrypt(recv[IP])
+        self.assert_packet_checksums_valid(decrypted)
+
+
+class IpsecTraTests(object):
+    def test_tra_basic(self, count=1):
+        """ ipsec v4 transport basic test """
+        try:
+            vpp_tra_sa, scapy_tra_sa = self.configure_sa_tra()
+            send_pkts = self.gen_encrypt_pkts(scapy_tra_sa, self.tra_if,
+                                              src=self.tra_if.remote_ip4,
+                                              dst=self.tra_if.local_ip4,
+                                              count=count)
+            recv_pkts = self.send_and_expect(self.tra_if, send_pkts,
+                                             self.tra_if, count=count)
+            for p in recv_pkts:
+                decrypted = vpp_tra_sa.decrypt(p[IP])
+                self.assert_packet_checksums_valid(decrypted)
+        finally:
+            self.logger.info(self.vapi.ppcli("show error"))
+            self.logger.info(self.vapi.ppcli("show ipsec"))
+
+    def test_tra_burst(self):
+        """ ipsec v4 transport burst test """
+        try:
+            self.test_tra_basic(count=257)
+        finally:
+            self.logger.info(self.vapi.ppcli("show error"))
+            self.logger.info(self.vapi.ppcli("show ipsec"))
+
+
+class IpsecTunTests(object):
+    def test_tun_basic(self, count=1):
+        """ ipsec 4o4 tunnel basic test """
+        try:
+            vpp_tun_sa, scapy_tun_sa = self.configure_sa_tun()
+            send_pkts = self.gen_encrypt_pkts(scapy_tun_sa, self.tun_if,
+                                              src=self.remote_tun_if_host,
+                                              dst=self.pg1.remote_ip4,
+                                              count=count)
+            recv_pkts = self.send_and_expect(self.tun_if, send_pkts, self.pg1,
+                                             count=count)
+            for recv_pkt in recv_pkts:
+                self.assert_equal(recv_pkt[IP].src, self.remote_tun_if_host)
+                self.assert_equal(recv_pkt[IP].dst, self.pg1.remote_ip4)
+                self.assert_packet_checksums_valid(recv_pkt)
+            send_pkts = self.gen_pkts(self.pg1, src=self.pg1.remote_ip4,
+                                      dst=self.remote_tun_if_host, count=count)
+            recv_pkts = self.send_and_expect(self.pg1, send_pkts, self.tun_if,
+                                             count=count)
+            for recv_pkt in recv_pkts:
+                decrypt_pkt = vpp_tun_sa.decrypt(recv_pkt[IP])
+                if not decrypt_pkt.haslayer(IP):
+                    decrypt_pkt = IP(decrypt_pkt[Raw].load)
+                self.assert_equal(decrypt_pkt.src, self.pg1.remote_ip4)
+                self.assert_equal(decrypt_pkt.dst, self.remote_tun_if_host)
+                self.assert_packet_checksums_valid(decrypt_pkt)
+        finally:
+            self.logger.info(self.vapi.ppcli("show error"))
+            self.logger.info(self.vapi.ppcli("show ipsec"))
+
+    def test_tun_burst(self):
+        """ ipsec 4o4 tunnel burst test """
+        try:
+            self.test_tun_basic(count=257)
+        finally:
+            self.logger.info(self.vapi.ppcli("show error"))
+            self.logger.info(self.vapi.ppcli("show ipsec"))
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/test_ipsec_ah.py b/test/test_ipsec_ah.py
index d173b2e3b23..729f8716d03 100644
--- a/test/test_ipsec_ah.py
+++ b/test/test_ipsec_ah.py
@@ -1,14 +1,14 @@
 import socket
 import unittest
 
-from scapy.layers.inet import IP, ICMP
-from scapy.layers.l2 import Ether, Raw
-from scapy.layers.ipsec import SecurityAssociation, AH
+from scapy.layers.ipsec import AH
 
-from framework import VppTestCase, VppTestRunner
+from framework import VppTestRunner
+from template_ipsec import TemplateIpsec, IpsecTraTests, IpsecTunTests
+from template_ipsec import IpsecTcpTests
 
 
-class TestIpsecAh(VppTestCase):
+class TemplateIpsecAh(TemplateIpsec):
     """
     Basic test for IPSEC using AH transport and Tunnel mode
 
@@ -41,214 +41,123 @@ class TestIpsecAh(VppTestCase):
     Note : IPv6 is not covered
     """
 
-    remote_pg0_lb_addr = '1.1.1.1'
-    remote_pg1_lb_addr = '2.2.2.2'
-    payload = "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
+    encryption_type = AH
 
     @classmethod
     def setUpClass(cls):
-        super(TestIpsecAh, cls).setUpClass()
-        try:
-            cls.create_pg_interfaces(range(3))
-            cls.interfaces = list(cls.pg_interfaces)
-            for i in cls.interfaces:
-                i.admin_up()
-                i.config_ip4()
-                i.resolve_arp()
-            cls.logger.info(cls.vapi.ppcli("show int addr"))
-            cls.config_ah_tra()
-            cls.logger.info(cls.vapi.ppcli("show ipsec"))
-            cls.config_ah_tun()
-            cls.logger.info(cls.vapi.ppcli("show ipsec"))
-        except Exception:
-            super(TestIpsecAh, cls).tearDownClass()
-            raise
+        super(TemplateIpsecAh, cls).setUpClass()
+        cls.tun_if = cls.pg0
+        cls.tra_if = cls.pg2
+        cls.logger.info(cls.vapi.ppcli("show int addr"))
+        cls.config_ah_tra()
+        cls.logger.info(cls.vapi.ppcli("show ipsec"))
+        cls.config_ah_tun()
+        cls.logger.info(cls.vapi.ppcli("show ipsec"))
+        src4 = socket.inet_pton(socket.AF_INET, cls.remote_tun_if_host)
+        cls.vapi.ip_add_del_route(src4, 32, cls.tun_if.remote_ip4n)
 
     @classmethod
     def config_ah_tun(cls):
-        spd_id = 1
-        remote_sa_id = 10
-        local_sa_id = 20
-        remote_tun_spi = 1001
-        local_tun_spi = 1000
-        src4 = socket.inet_pton(socket.AF_INET, cls.remote_pg0_lb_addr)
-        cls.vapi.ip_add_del_route(src4, 32, cls.pg0.remote_ip4n)
-        dst4 = socket.inet_pton(socket.AF_INET, cls.remote_pg1_lb_addr)
-        cls.vapi.ip_add_del_route(dst4, 32, cls.pg1.remote_ip4n)
-        cls.vapi.ipsec_sad_add_del_entry(remote_sa_id, remote_tun_spi,
-                                         cls.pg0.local_ip4n,
-                                         cls.pg0.remote_ip4n,
-                                         integrity_key_length=20)
-        cls.vapi.ipsec_sad_add_del_entry(local_sa_id, local_tun_spi,
-                                         cls.pg0.remote_ip4n,
-                                         cls.pg0.local_ip4n,
-                                         integrity_key_length=20)
-        cls.vapi.ipsec_spd_add_del(spd_id)
-        cls.vapi.ipsec_interface_add_del_spd(spd_id, cls.pg0.sw_if_index)
+        cls.vapi.ipsec_sad_add_del_entry(cls.scapy_tun_sa_id,
+                                         cls.scapy_tun_spi,
+                                         cls.auth_algo_vpp_id, cls.auth_key,
+                                         cls.crypt_algo_vpp_id,
+                                         cls.crypt_key, cls.vpp_ah_protocol,
+                                         cls.tun_if.local_ip4n,
+                                         cls.tun_if.remote_ip4n)
+        cls.vapi.ipsec_sad_add_del_entry(cls.vpp_tun_sa_id,
+                                         cls.vpp_tun_spi,
+                                         cls.auth_algo_vpp_id, cls.auth_key,
+                                         cls.crypt_algo_vpp_id,
+                                         cls.crypt_key, cls.vpp_ah_protocol,
+                                         cls.tun_if.remote_ip4n,
+                                         cls.tun_if.local_ip4n)
+        cls.vapi.ipsec_spd_add_del(cls.tun_spd_id)
+        cls.vapi.ipsec_interface_add_del_spd(cls.tun_spd_id,
+                                             cls.tun_if.sw_if_index)
         l_startaddr = r_startaddr = socket.inet_pton(socket.AF_INET, "0.0.0.0")
         l_stopaddr = r_stopaddr = socket.inet_pton(socket.AF_INET,
                                                    "255.255.255.255")
-        cls.vapi.ipsec_spd_add_del_entry(spd_id, l_startaddr, l_stopaddr,
-                                         r_startaddr, r_stopaddr,
+        cls.vapi.ipsec_spd_add_del_entry(cls.tun_spd_id, cls.vpp_tun_sa_id,
+                                         l_startaddr, l_stopaddr, r_startaddr,
+                                         r_stopaddr,
+                                         protocol=socket.IPPROTO_AH)
+        cls.vapi.ipsec_spd_add_del_entry(cls.tun_spd_id, cls.vpp_tun_sa_id,
+                                         l_startaddr, l_stopaddr, r_startaddr,
+                                         r_stopaddr, is_outbound=0,
                                          protocol=socket.IPPROTO_AH)
-        cls.vapi.ipsec_spd_add_del_entry(spd_id, l_startaddr, l_stopaddr,
-                                         r_startaddr, r_stopaddr,
-                                         protocol=socket.IPPROTO_AH,
-                                         is_outbound=0)
         l_startaddr = l_stopaddr = socket.inet_pton(socket.AF_INET,
-                                                    cls.remote_pg0_lb_addr)
-        r_startaddr = r_stopaddr = socket.inet_pton(socket.AF_INET,
-                                                    cls.remote_pg1_lb_addr)
-        cls.vapi.ipsec_spd_add_del_entry(spd_id, l_startaddr, l_stopaddr,
-                                         r_startaddr, r_stopaddr,
-                                         priority=10, policy=3,
-                                         is_outbound=0, sa_id=local_sa_id)
-        cls.vapi.ipsec_spd_add_del_entry(spd_id, r_startaddr, r_stopaddr,
-                                         l_startaddr, l_stopaddr, priority=10,
-                                         policy=3, sa_id=remote_sa_id)
+                                                    cls.remote_tun_if_host)
+        r_startaddr = r_stopaddr = cls.pg1.remote_ip4n
+        cls.vapi.ipsec_spd_add_del_entry(cls.tun_spd_id, cls.vpp_tun_sa_id,
+                                         l_startaddr, l_stopaddr, r_startaddr,
+                                         r_stopaddr, priority=10, policy=3,
+                                         is_outbound=0)
+        cls.vapi.ipsec_spd_add_del_entry(cls.tun_spd_id, cls.scapy_tun_sa_id,
+                                         r_startaddr, r_stopaddr, l_startaddr,
+                                         l_stopaddr, priority=10, policy=3)
+        r_startaddr = r_stopaddr = cls.pg0.local_ip4n
+        cls.vapi.ipsec_spd_add_del_entry(cls.tun_spd_id, cls.vpp_tun_sa_id,
+                                         l_startaddr, l_stopaddr, r_startaddr,
+                                         r_stopaddr, priority=20, policy=3,
+                                         is_outbound=0)
+        cls.vapi.ipsec_spd_add_del_entry(cls.tun_spd_id, cls.scapy_tun_sa_id,
+                                         r_startaddr, r_stopaddr, l_startaddr,
+                                         l_stopaddr, priority=20, policy=3)
 
     @classmethod
     def config_ah_tra(cls):
-        spd_id = 2
-        remote_sa_id = 30
-        local_sa_id = 40
-        remote_tra_spi = 2001
-        local_tra_spi = 2000
-        cls.vapi.ipsec_sad_add_del_entry(remote_sa_id, remote_tra_spi,
-                                         integrity_key_length=20, is_tunnel=0)
-        cls.vapi.ipsec_sad_add_del_entry(local_sa_id, local_tra_spi,
-                                         integrity_key_length=20, is_tunnel=0)
-        cls.vapi.ipsec_spd_add_del(spd_id)
-        cls.vapi.ipsec_interface_add_del_spd(spd_id, cls.pg2.sw_if_index)
+        cls.vapi.ipsec_sad_add_del_entry(cls.scapy_tra_sa_id,
+                                         cls.scapy_tra_spi,
+                                         cls.auth_algo_vpp_id, cls.auth_key,
+                                         cls.crypt_algo_vpp_id,
+                                         cls.crypt_key, cls.vpp_ah_protocol,
+                                         is_tunnel=0)
+        cls.vapi.ipsec_sad_add_del_entry(cls.vpp_tra_sa_id,
+                                         cls.vpp_tra_spi,
+                                         cls.auth_algo_vpp_id, cls.auth_key,
+                                         cls.crypt_algo_vpp_id,
+                                         cls.crypt_key, cls.vpp_ah_protocol,
+                                         is_tunnel=0)
+        cls.vapi.ipsec_spd_add_del(cls.tra_spd_id)
+        cls.vapi.ipsec_interface_add_del_spd(cls.tra_spd_id,
+                                             cls.tra_if.sw_if_index)
         l_startaddr = r_startaddr = socket.inet_pton(socket.AF_INET, "0.0.0.0")
         l_stopaddr = r_stopaddr = socket.inet_pton(socket.AF_INET,
                                                    "255.255.255.255")
-        cls.vapi.ipsec_spd_add_del_entry(spd_id, l_startaddr, l_stopaddr,
-                                         r_startaddr, r_stopaddr,
+        cls.vapi.ipsec_spd_add_del_entry(cls.tra_spd_id, cls.vpp_tra_sa_id,
+                                         l_startaddr, l_stopaddr, r_startaddr,
+                                         r_stopaddr,
                                          protocol=socket.IPPROTO_AH)
-        cls.vapi.ipsec_spd_add_del_entry(spd_id, l_startaddr, l_stopaddr,
-                                         r_startaddr, r_stopaddr,
-                                         protocol=socket.IPPROTO_AH,
+        cls.vapi.ipsec_spd_add_del_entry(cls.tra_spd_id, cls.scapy_tra_sa_id,
+                                         l_startaddr, l_stopaddr, r_startaddr,
+                                         r_stopaddr, is_outbound=0,
+                                         protocol=socket.IPPROTO_AH)
+        l_startaddr = l_stopaddr = cls.tra_if.local_ip4n
+        r_startaddr = r_stopaddr = cls.tra_if.remote_ip4n
+        cls.vapi.ipsec_spd_add_del_entry(cls.tra_spd_id, cls.vpp_tra_sa_id,
+                                         l_startaddr, l_stopaddr, r_startaddr,
+                                         r_stopaddr, priority=10, policy=3,
                                          is_outbound=0)
-        l_startaddr = l_stopaddr = cls.pg2.local_ip4n
-        r_startaddr = r_stopaddr = cls.pg2.remote_ip4n
-        cls.vapi.ipsec_spd_add_del_entry(spd_id, l_startaddr, l_stopaddr,
-                                         r_startaddr, r_stopaddr,
-                                         priority=10, policy=3,
-                                         is_outbound=0, sa_id=local_sa_id)
-        cls.vapi.ipsec_spd_add_del_entry(spd_id, l_startaddr, l_stopaddr,
-                                         r_startaddr, r_stopaddr, priority=10,
-                                         policy=3, sa_id=remote_sa_id)
-
-    def configure_scapy_sa_tun(self):
-        remote_tun_sa = SecurityAssociation(AH, spi=0x000003e8,
-                                            auth_algo='HMAC-SHA1-96',
-                                            auth_key='C91KUR9GYMm5GfkEvNjX',
-                                            tunnel_header=IP(
-                                                src=self.pg0.remote_ip4,
-                                                dst=self.pg0.local_ip4))
-        local_tun_sa = SecurityAssociation(AH, spi=0x000003e9,
-                                           auth_algo='HMAC-SHA1-96',
-                                           auth_key='C91KUR9GYMm5GfkEvNjX',
-                                           tunnel_header=IP(
-                                               dst=self.pg0.remote_ip4,
-                                               src=self.pg0.local_ip4))
-        return local_tun_sa, remote_tun_sa
-
-    def configure_scapy_sa_tra(self):
-        remote_tra_sa = SecurityAssociation(AH, spi=0x000007d0,
-                                            auth_algo='HMAC-SHA1-96',
-                                            auth_key='C91KUR9GYMm5GfkEvNjX')
-        local_tra_sa = SecurityAssociation(AH, spi=0x000007d1,
-                                           auth_algo='HMAC-SHA1-96',
-                                           auth_key='C91KUR9GYMm5GfkEvNjX')
-        return local_tra_sa, remote_tra_sa
+        cls.vapi.ipsec_spd_add_del_entry(cls.tra_spd_id, cls.scapy_tra_sa_id,
+                                         l_startaddr, l_stopaddr, r_startaddr,
+                                         r_stopaddr, priority=10,
+                                         policy=3)
 
     def tearDown(self):
-        super(TestIpsecAh, self).tearDown()
+        super(TemplateIpsecAh, self).tearDown()
         if not self.vpp_dead:
             self.vapi.cli("show hardware")
 
-    def send_and_expect(self, input, pkts, output, count=1):
-        input.add_stream(pkts)
-        self.pg_enable_capture(self.pg_interfaces)
-        self.pg_start()
-        rx = output.get_capture(count)
-        return rx
-
-    def gen_encrypt_pkts(self, sa, sw_intf, src, dst, count=1):
-        return [Ether(src=sw_intf.remote_mac, dst=sw_intf.local_mac) /
-                sa.encrypt(IP(src=src, dst=dst) / ICMP() / self.payload)
-                ] * count
-
-    def gen_pkts(self, sw_intf, src, dst, count=1):
-        return [Ether(src=sw_intf.remote_mac, dst=sw_intf.local_mac) /
-                IP(src=src, dst=dst) / ICMP() / self.payload
-                ] * count
-
-    def test_ipsec_ah_tra_basic(self, count=1):
-        """ ipsec ah v4 transport basic test """
-        try:
-            local_tra_sa, remote_tra_sa = self.configure_scapy_sa_tra()
-            send_pkts = self.gen_encrypt_pkts(remote_tra_sa, self.pg2,
-                                              src=self.pg2.remote_ip4,
-                                              dst=self.pg2.local_ip4,
-                                              count=count)
-            recv_pkts = self.send_and_expect(self.pg2, send_pkts, self.pg2,
-                                             count=count)
-            # ESP TRA VPP encryption/decryption verification
-            for Pkts in recv_pkts:
-                Pkts[AH].padding = Pkts[AH].icv[12:]
-                Pkts[AH].icv = Pkts[AH].icv[:12]
-                local_tra_sa.decrypt(Pkts[IP])
-        finally:
-            self.logger.info(self.vapi.ppcli("show error"))
-            self.logger.info(self.vapi.ppcli("show ipsec"))
-
-    def test_ipsec_ah_tra_burst(self):
-        """ ipsec ah v4 transport burst test """
-        try:
-            self.test_ipsec_ah_tra_basic(count=257)
-        finally:
-            self.logger.info(self.vapi.ppcli("show error"))
-            self.logger.info(self.vapi.ppcli("show ipsec"))
-
-    def test_ipsec_ah_tun_basic(self, count=1):
-        """ ipsec ah 4o4 tunnel basic test """
-        try:
-            local_tun_sa, remote_tun_sa = self.configure_scapy_sa_tun()
-            send_pkts = self.gen_encrypt_pkts(remote_tun_sa, self.pg0,
-                                              src=self.remote_pg0_lb_addr,
-                                              dst=self.remote_pg1_lb_addr,
-                                              count=count)
-            recv_pkts = self.send_and_expect(self.pg0, send_pkts, self.pg1,
-                                             count=count)
-            # ESP TUN VPP decryption verification
-            for recv_pkt in recv_pkts:
-                self.assert_equal(recv_pkt[IP].src, self.remote_pg0_lb_addr)
-                self.assert_equal(recv_pkt[IP].dst, self.remote_pg1_lb_addr)
-            send_pkts = self.gen_pkts(self.pg1, src=self.remote_pg1_lb_addr,
-                                      dst=self.remote_pg0_lb_addr,
-                                      count=count)
-            recv_pkts = self.send_and_expect(self.pg1, send_pkts, self.pg0,
-                                             count=count)
-            # ESP TUN VPP encryption verification
-            for recv_pkt in recv_pkts:
-                decrypt_pkt = local_tun_sa.decrypt(recv_pkt[IP])
-                decrypt_pkt = IP(decrypt_pkt[Raw].load)
-                self.assert_equal(decrypt_pkt.src, self.remote_pg1_lb_addr)
-                self.assert_equal(decrypt_pkt.dst, self.remote_pg0_lb_addr)
-        finally:
-            self.logger.info(self.vapi.ppcli("show error"))
-            self.logger.info(self.vapi.ppcli("show ipsec"))
-
-    def test_ipsec_ah_tun_burst(self):
-        """ ipsec ah 4o4 tunnel burst test """
-        try:
-            self.test_ipsec_ah_tun_basic(count=257)
-        finally:
-            self.logger.info(self.vapi.ppcli("show error"))
-            self.logger.info(self.vapi.ppcli("show ipsec"))
+
+class TestIpsecAh1(TemplateIpsecAh, IpsecTraTests, IpsecTunTests):
+    """ Ipsec AH - TUN & TRA tests """
+    pass
+
+
+class TestIpsecAh2(TemplateIpsecAh, IpsecTcpTests):
+    """ Ipsec AH - TCP tests """
+    pass
 
 
 if __name__ == '__main__':
diff --git a/test/test_ipsec_esp.py b/test/test_ipsec_esp.py
index 15ce4a96878..58d159a7213 100644
--- a/test/test_ipsec_esp.py
+++ b/test/test_ipsec_esp.py
@@ -1,14 +1,13 @@
 import socket
 import unittest
+from scapy.layers.ipsec import ESP
 
-from scapy.layers.inet import IP, ICMP
-from scapy.layers.l2 import Ether
-from scapy.layers.ipsec import SecurityAssociation, ESP
+from framework import VppTestRunner
+from template_ipsec import IpsecTraTests, IpsecTunTests
+from template_ipsec import TemplateIpsec, IpsecTcpTests
 
-from framework import VppTestCase, VppTestRunner
 
-
-class TestIpsecEsp(VppTestCase):
+class TemplateIpsecEsp(TemplateIpsec):
     """
     Basic test for ipsec esp sanity - tunnel and transport modes.
 
@@ -41,298 +40,121 @@ class TestIpsecEsp(VppTestCase):
     Note : IPv6 is not covered
     """
 
-    remote_pg0_lb_addr = '1.1.1.1'
-    remote_pg1_lb_addr = '2.2.2.2'
+    encryption_type = ESP
 
     @classmethod
     def setUpClass(cls):
-        super(TestIpsecEsp, cls).setUpClass()
-        try:
-            cls.create_pg_interfaces(range(3))
-            cls.interfaces = list(cls.pg_interfaces)
-            for i in cls.interfaces:
-                i.admin_up()
-                i.config_ip4()
-                i.resolve_arp()
-            cls.logger.info(cls.vapi.ppcli("show int addr"))
-            cls.configEspTra()
-            cls.logger.info(cls.vapi.ppcli("show ipsec"))
-            cls.configEspTun()
-            cls.logger.info(cls.vapi.ppcli("show ipsec"))
-        except Exception:
-            super(TestIpsecEsp, cls).tearDownClass()
-            raise
+        super(TemplateIpsecEsp, cls).setUpClass()
+        cls.tun_if = cls.pg0
+        cls.tra_if = cls.pg2
+        cls.logger.info(cls.vapi.ppcli("show int addr"))
+        cls.config_esp_tra()
+        cls.logger.info(cls.vapi.ppcli("show ipsec"))
+        cls.config_esp_tun()
+        cls.logger.info(cls.vapi.ppcli("show ipsec"))
+        src4 = socket.inet_pton(socket.AF_INET, cls.remote_tun_if_host)
+        cls.vapi.ip_add_del_route(src4, 32, cls.tun_if.remote_ip4n)
 
     @classmethod
-    def configEspTun(cls):
-        try:
-            spd_id = 1
-            remote_sa_id = 10
-            local_sa_id = 20
-            remote_tun_spi = 1001
-            local_tun_spi = 1000
-            src4 = socket.inet_pton(socket.AF_INET, cls.remote_pg0_lb_addr)
-            cls.vapi.ip_add_del_route(src4, 32, cls.pg0.remote_ip4n)
-            dst4 = socket.inet_pton(socket.AF_INET, cls.remote_pg1_lb_addr)
-            cls.vapi.ip_add_del_route(dst4, 32, cls.pg1.remote_ip4n)
-            cls.vapi.ipsec_sad_add_del_entry(
-                remote_sa_id,
-                remote_tun_spi,
-                cls.pg0.local_ip4n,
-                cls.pg0.remote_ip4n,
-                integrity_key_length=20,
-                crypto_key_length=16,
-                protocol=1)
-            cls.vapi.ipsec_sad_add_del_entry(
-                local_sa_id,
-                local_tun_spi,
-                cls.pg0.remote_ip4n,
-                cls.pg0.local_ip4n,
-                integrity_key_length=20,
-                crypto_key_length=16,
-                protocol=1)
-            cls.vapi.ipsec_spd_add_del(spd_id)
-            cls.vapi.ipsec_interface_add_del_spd(spd_id, cls.pg0.sw_if_index)
-            l_startaddr = r_startaddr = socket.inet_pton(
-                socket.AF_INET, "0.0.0.0")
-            l_stopaddr = r_stopaddr = socket.inet_pton(
-                socket.AF_INET, "255.255.255.255")
-            cls.vapi.ipsec_spd_add_del_entry(
-                spd_id,
-                l_startaddr,
-                l_stopaddr,
-                r_startaddr,
-                r_stopaddr,
-                protocol=socket.IPPROTO_ESP)
-            cls.vapi.ipsec_spd_add_del_entry(
-                spd_id,
-                l_startaddr,
-                l_stopaddr,
-                r_startaddr,
-                r_stopaddr,
-                protocol=socket.IPPROTO_ESP,
-                is_outbound=0)
-            l_startaddr = l_stopaddr = socket.inet_pton(
-                socket.AF_INET, cls.remote_pg0_lb_addr)
-            r_startaddr = r_stopaddr = socket.inet_pton(
-                socket.AF_INET, cls.remote_pg1_lb_addr)
-            cls.vapi.ipsec_spd_add_del_entry(
-                spd_id,
-                l_startaddr,
-                l_stopaddr,
-                r_startaddr,
-                r_stopaddr,
-                priority=10,
-                policy=3,
-                is_outbound=0,
-                sa_id=local_sa_id)
-            cls.vapi.ipsec_spd_add_del_entry(
-                spd_id,
-                r_startaddr,
-                r_stopaddr,
-                l_startaddr,
-                l_stopaddr,
-                priority=10,
-                policy=3,
-                sa_id=remote_sa_id)
-        except Exception:
-            raise
+    def config_esp_tun(cls):
+        cls.vapi.ipsec_sad_add_del_entry(cls.scapy_tun_sa_id,
+                                         cls.scapy_tun_spi,
+                                         cls.auth_algo_vpp_id, cls.auth_key,
+                                         cls.crypt_algo_vpp_id,
+                                         cls.crypt_key, cls.vpp_esp_protocol,
+                                         cls.tun_if.local_ip4n,
+                                         cls.tun_if.remote_ip4n)
+        cls.vapi.ipsec_sad_add_del_entry(cls.vpp_tun_sa_id,
+                                         cls.vpp_tun_spi,
+                                         cls.auth_algo_vpp_id, cls.auth_key,
+                                         cls.crypt_algo_vpp_id,
+                                         cls.crypt_key, cls.vpp_esp_protocol,
+                                         cls.tun_if.remote_ip4n,
+                                         cls.tun_if.local_ip4n)
+        cls.vapi.ipsec_spd_add_del(cls.tun_spd_id)
+        cls.vapi.ipsec_interface_add_del_spd(cls.tun_spd_id,
+                                             cls.tun_if.sw_if_index)
+        l_startaddr = r_startaddr = socket.inet_pton(socket.AF_INET,
+                                                     "0.0.0.0")
+        l_stopaddr = r_stopaddr = socket.inet_pton(socket.AF_INET,
+                                                   "255.255.255.255")
+        cls.vapi.ipsec_spd_add_del_entry(cls.tun_spd_id, cls.scapy_tun_sa_id,
+                                         l_startaddr, l_stopaddr, r_startaddr,
+                                         r_stopaddr,
+                                         protocol=socket.IPPROTO_ESP)
+        cls.vapi.ipsec_spd_add_del_entry(cls.tun_spd_id, cls.scapy_tun_sa_id,
+                                         l_startaddr, l_stopaddr, r_startaddr,
+                                         r_stopaddr, is_outbound=0,
+                                         protocol=socket.IPPROTO_ESP)
+        l_startaddr = l_stopaddr = socket.inet_pton(socket.AF_INET,
+                                                    cls.remote_tun_if_host)
+        r_startaddr = r_stopaddr = cls.pg1.remote_ip4n
+        cls.vapi.ipsec_spd_add_del_entry(cls.tun_spd_id, cls.vpp_tun_sa_id,
+                                         l_startaddr, l_stopaddr, r_startaddr,
+                                         r_stopaddr, priority=10, policy=3,
+                                         is_outbound=0)
+        cls.vapi.ipsec_spd_add_del_entry(cls.tun_spd_id, cls.scapy_tun_sa_id,
+                                         r_startaddr, r_stopaddr, l_startaddr,
+                                         l_stopaddr, priority=10, policy=3)
+        l_startaddr = l_stopaddr = socket.inet_pton(socket.AF_INET,
+                                                    cls.remote_tun_if_host)
+        r_startaddr = r_stopaddr = cls.pg0.local_ip4n
+        cls.vapi.ipsec_spd_add_del_entry(cls.tun_spd_id, cls.vpp_tun_sa_id,
+                                         l_startaddr, l_stopaddr, r_startaddr,
+                                         r_stopaddr, priority=20, policy=3,
+                                         is_outbound=0)
+        cls.vapi.ipsec_spd_add_del_entry(cls.tun_spd_id, cls.scapy_tun_sa_id,
+                                         r_startaddr, r_stopaddr, l_startaddr,
+                                         l_stopaddr, priority=20, policy=3)
 
     @classmethod
-    def configEspTra(cls):
-        try:
-            spd_id = 2
-            remote_sa_id = 30
-            local_sa_id = 40
-            remote_tra_spi = 2001
-            local_tra_spi = 2000
-            cls.vapi.ipsec_sad_add_del_entry(
-                remote_sa_id,
-                remote_tra_spi,
-                integrity_key_length=20,
-                crypto_key_length=16,
-                protocol=1,
-                is_tunnel=0)
-            cls.vapi.ipsec_sad_add_del_entry(
-                local_sa_id,
-                local_tra_spi,
-                integrity_key_length=20,
-                crypto_key_length=16,
-                protocol=1,
-                is_tunnel=0)
-            cls.vapi.ipsec_spd_add_del(spd_id)
-            cls.vapi.ipsec_interface_add_del_spd(spd_id, cls.pg2.sw_if_index)
-            l_startaddr = r_startaddr = socket.inet_pton(
-                socket.AF_INET, "0.0.0.0")
-            l_stopaddr = r_stopaddr = socket.inet_pton(
-                socket.AF_INET, "255.255.255.255")
-            cls.vapi.ipsec_spd_add_del_entry(
-                spd_id,
-                l_startaddr,
-                l_stopaddr,
-                r_startaddr,
-                r_stopaddr,
-                protocol=socket.IPPROTO_ESP)
-            cls.vapi.ipsec_spd_add_del_entry(
-                spd_id,
-                l_startaddr,
-                l_stopaddr,
-                r_startaddr,
-                r_stopaddr,
-                protocol=socket.IPPROTO_ESP,
-                is_outbound=0)
-            l_startaddr = l_stopaddr = cls.pg2.local_ip4n
-            r_startaddr = r_stopaddr = cls.pg2.remote_ip4n
-            cls.vapi.ipsec_spd_add_del_entry(
-                spd_id,
-                l_startaddr,
-                l_stopaddr,
-                r_startaddr,
-                r_stopaddr,
-                priority=10,
-                policy=3,
-                is_outbound=0,
-                sa_id=local_sa_id)
-            cls.vapi.ipsec_spd_add_del_entry(
-                spd_id,
-                l_startaddr,
-                l_stopaddr,
-                r_startaddr,
-                r_stopaddr,
-                priority=10,
-                policy=3,
-                sa_id=remote_sa_id)
-        except Exception:
-            raise
-
-    def configScapySA(self, is_tun=False):
-        if is_tun:
-            self.remote_tun_sa = SecurityAssociation(
-                ESP,
-                spi=0x000003e8,
-                crypt_algo='AES-CBC',
-                crypt_key='JPjyOWBeVEQiMe7h',
-                auth_algo='HMAC-SHA1-96',
-                auth_key='C91KUR9GYMm5GfkEvNjX',
-                tunnel_header=IP(
-                    src=self.pg0.remote_ip4,
-                    dst=self.pg0.local_ip4))
-            self.local_tun_sa = SecurityAssociation(
-                ESP,
-                spi=0x000003e9,
-                crypt_algo='AES-CBC',
-                crypt_key='JPjyOWBeVEQiMe7h',
-                auth_algo='HMAC-SHA1-96',
-                auth_key='C91KUR9GYMm5GfkEvNjX',
-                tunnel_header=IP(
-                    dst=self.pg0.remote_ip4,
-                    src=self.pg0.local_ip4))
-        else:
-            self.remote_tra_sa = SecurityAssociation(
-                ESP,
-                spi=0x000007d0,
-                crypt_algo='AES-CBC',
-                crypt_key='JPjyOWBeVEQiMe7h',
-                auth_algo='HMAC-SHA1-96',
-                auth_key='C91KUR9GYMm5GfkEvNjX')
-            self.local_tra_sa = SecurityAssociation(
-                ESP,
-                spi=0x000007d1,
-                crypt_algo='AES-CBC',
-                crypt_key='JPjyOWBeVEQiMe7h',
-                auth_algo='HMAC-SHA1-96',
-                auth_key='C91KUR9GYMm5GfkEvNjX')
-
-    def tearDown(self):
-        super(TestIpsecEsp, self).tearDown()
-        if not self.vpp_dead:
-            self.vapi.cli("show hardware")
-
-    def send_and_expect(self, input, pkts, output, count=1):
-        input.add_stream(pkts)
-        self.pg_enable_capture(self.pg_interfaces)
-        self.pg_start()
-        rx = output.get_capture(count)
-        return rx
-
-    def gen_encrypt_pkts(self, sa, sw_intf, src, dst, count=1):
-        return [Ether(src=sw_intf.remote_mac, dst=sw_intf.local_mac) /
-                sa.encrypt(IP(src=src, dst=dst) / ICMP() /
-                "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX")
-                ] * count
-
-    def gen_pkts(self, sw_intf, src, dst, count=1):
-        return [Ether(src=sw_intf.remote_mac, dst=sw_intf.local_mac) /
-                IP(src=src, dst=dst) / ICMP() /
-                "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
-                ] * count
-
-    def test_ipsec_esp_tra_basic(self, count=1):
-        """ ipsec esp v4 transport basic test """
-        try:
-            self.configScapySA()
-            send_pkts = self.gen_encrypt_pkts(
-                self.remote_tra_sa,
-                self.pg2,
-                src=self.pg2.remote_ip4,
-                dst=self.pg2.local_ip4,
-                count=count)
-            recv_pkts = self.send_and_expect(
-                self.pg2, send_pkts, self.pg2, count=count)
-            # ESP TRA VPP encryption/decryption verification
-            for Pkts in recv_pkts:
-                self.local_tra_sa.decrypt(Pkts[IP])
-        finally:
-            self.logger.info(self.vapi.ppcli("show error"))
-            self.logger.info(self.vapi.ppcli("show ipsec"))
-
-    def test_ipsec_esp_tra_burst(self):
-        """ ipsec esp v4 transport burst test """
-        try:
-            self.test_ipsec_esp_tra_basic(count=257)
-        finally:
-            self.logger.info(self.vapi.ppcli("show error"))
-            self.logger.info(self.vapi.ppcli("show ipsec"))
-
-    def test_ipsec_esp_tun_basic(self, count=1):
-        """ ipsec esp 4o4 tunnel basic test """
-        try:
-            self.configScapySA(is_tun=True)
-            send_pkts = self.gen_encrypt_pkts(
-                self.remote_tun_sa,
-                self.pg0,
-                src=self.remote_pg0_lb_addr,
-                dst=self.remote_pg1_lb_addr,
-                count=count)
-            recv_pkts = self.send_and_expect(
-                self.pg0, send_pkts, self.pg1, count=count)
-            # ESP TUN VPP decryption verification
-            for recv_pkt in recv_pkts:
-                self.assert_equal(recv_pkt[IP].src, self.remote_pg0_lb_addr)
-                self.assert_equal(recv_pkt[IP].dst, self.remote_pg1_lb_addr)
-            send_pkts = self.gen_pkts(
-                self.pg1,
-                src=self.remote_pg1_lb_addr,
-                dst=self.remote_pg0_lb_addr,
-                count=count)
-            recv_pkts = self.send_and_expect(
-                self.pg1, send_pkts, self.pg0, count=count)
-            # ESP TUN VPP encryption verification
-            for recv_pkt in recv_pkts:
-                decrypt_pkt = self.local_tun_sa.decrypt(recv_pkt[IP])
-                self.assert_equal(decrypt_pkt.src, self.remote_pg1_lb_addr)
-                self.assert_equal(decrypt_pkt.dst, self.remote_pg0_lb_addr)
-        finally:
-            self.logger.info(self.vapi.ppcli("show error"))
-            self.logger.info(self.vapi.ppcli("show ipsec"))
-
-    def test_ipsec_esp_tun_burst(self):
-        """ ipsec esp 4o4 tunnel burst test """
-        try:
-            self.test_ipsec_esp_tun_basic(count=257)
-        finally:
-            self.logger.info(self.vapi.ppcli("show error"))
-            self.logger.info(self.vapi.ppcli("show ipsec"))
+    def config_esp_tra(cls):
+        cls.vapi.ipsec_sad_add_del_entry(cls.scapy_tra_sa_id,
+                                         cls.scapy_tra_spi,
+                                         cls.auth_algo_vpp_id, cls.auth_key,
+                                         cls.crypt_algo_vpp_id,
+                                         cls.crypt_key, cls.vpp_esp_protocol,
+                                         is_tunnel=0)
+        cls.vapi.ipsec_sad_add_del_entry(cls.vpp_tra_sa_id,
+                                         cls.vpp_tra_spi,
+                                         cls.auth_algo_vpp_id, cls.auth_key,
+                                         cls.crypt_algo_vpp_id,
+                                         cls.crypt_key, cls.vpp_esp_protocol,
+                                         is_tunnel=0)
+        cls.vapi.ipsec_spd_add_del(cls.tra_spd_id)
+        cls.vapi.ipsec_interface_add_del_spd(cls.tra_spd_id,
+                                             cls.tra_if.sw_if_index)
+        l_startaddr = r_startaddr = socket.inet_pton(socket.AF_INET,
+                                                     "0.0.0.0")
+        l_stopaddr = r_stopaddr = socket.inet_pton(socket.AF_INET,
+                                                   "255.255.255.255")
+        cls.vapi.ipsec_spd_add_del_entry(cls.tra_spd_id, cls.vpp_tra_sa_id,
+                                         l_startaddr, l_stopaddr, r_startaddr,
+                                         r_stopaddr,
+                                         protocol=socket.IPPROTO_ESP)
+        cls.vapi.ipsec_spd_add_del_entry(cls.tra_spd_id, cls.vpp_tra_sa_id,
+                                         l_startaddr, l_stopaddr, r_startaddr,
+                                         r_stopaddr, is_outbound=0,
+                                         protocol=socket.IPPROTO_ESP)
+        l_startaddr = l_stopaddr = cls.tra_if.local_ip4n
+        r_startaddr = r_stopaddr = cls.tra_if.remote_ip4n
+        cls.vapi.ipsec_spd_add_del_entry(cls.tra_spd_id, cls.vpp_tra_sa_id,
+                                         l_startaddr, l_stopaddr, r_startaddr,
+                                         r_stopaddr, priority=10, policy=3,
+                                         is_outbound=0)
+        cls.vapi.ipsec_spd_add_del_entry(cls.tra_spd_id, cls.scapy_tra_sa_id,
+                                         l_startaddr, l_stopaddr, r_startaddr,
+                                         r_stopaddr, priority=10, policy=3)
+
+
+class TestIpsecEsp1(TemplateIpsecEsp, IpsecTraTests, IpsecTunTests):
+    """ Ipsec ESP - TUN & TRA tests """
+    pass
+
+
+class TestIpsecEsp2(TemplateIpsecEsp, IpsecTcpTests):
+    """ Ipsec ESP - TCP tests """
+    pass
 
 
 if __name__ == '__main__':
diff --git a/test/test_ipsec_nat.py b/test/test_ipsec_nat.py
index cebbfc8ec67..7a5aca6bb7b 100644
--- a/test/test_ipsec_nat.py
+++ b/test/test_ipsec_nat.py
@@ -141,17 +141,17 @@ class IPSecNATTestCase(VppTestCase):
         spd_id = 1
         remote_sa_id = 10
         local_sa_id = 20
-        remote_tun_spi = 1001
-        local_tun_spi = 1000
+        scapy_tun_spi = 1001
+        vpp_tun_spi = 1000
         client = socket.inet_pton(socket.AF_INET, cls.remote_pg0_client_addr)
         cls.vapi.ip_add_del_route(client, 32, cls.pg0.remote_ip4n)
-        cls.vapi.ipsec_sad_add_del_entry(remote_sa_id, remote_tun_spi,
+        cls.vapi.ipsec_sad_add_del_entry(remote_sa_id, scapy_tun_spi,
                                          cls.pg1.remote_ip4n,
                                          cls.pg0.remote_ip4n,
                                          integrity_key_length=20,
                                          crypto_key_length=16,
                                          protocol=1, udp_encap=1)
-        cls.vapi.ipsec_sad_add_del_entry(local_sa_id, local_tun_spi,
+        cls.vapi.ipsec_sad_add_del_entry(local_sa_id, vpp_tun_spi,
                                          cls.pg0.remote_ip4n,
                                          cls.pg1.remote_ip4n,
                                          integrity_key_length=20,
diff --git a/test/test_ipsec_tun_if_esp.py b/test/test_ipsec_tun_if_esp.py
new file mode 100644
index 00000000000..c260f03b63d
--- /dev/null
+++ b/test/test_ipsec_tun_if_esp.py
@@ -0,0 +1,52 @@
+import unittest
+import socket
+from scapy.layers.ipsec import ESP
+from framework import VppTestRunner
+from template_ipsec import TemplateIpsec, IpsecTunTests, IpsecTcpTests
+from vpp_ipsec_tun_interface import VppIpsecTunInterface
+
+
+class TemplateIpsecTunIfEsp(TemplateIpsec):
+    """ IPsec tunnel interface tests """
+
+    encryption_type = ESP
+
+    @classmethod
+    def setUpClass(cls):
+        super(TemplateIpsecTunIfEsp, cls).setUpClass()
+        cls.tun_if = cls.pg0
+
+    def setUp(self):
+        self.ipsec_tun_if = VppIpsecTunInterface(self, self.pg0,
+                                                 self.vpp_tun_spi,
+                                                 self.scapy_tun_spi,
+                                                 self.crypt_algo_vpp_id,
+                                                 self.crypt_key,
+                                                 self.crypt_key,
+                                                 self.auth_algo_vpp_id,
+                                                 self.auth_key,
+                                                 self.auth_key)
+        self.ipsec_tun_if.add_vpp_config()
+        self.ipsec_tun_if.admin_up()
+        self.ipsec_tun_if.config_ip4()
+        src4 = socket.inet_pton(socket.AF_INET, self.remote_tun_if_host)
+        self.vapi.ip_add_del_route(src4, 32, self.ipsec_tun_if.remote_ip4n)
+
+    def tearDown(self):
+        if not self.vpp_dead:
+            self.vapi.cli("show hardware")
+        super(TemplateIpsecTunIfEsp, self).tearDown()
+
+
+class TestIpsecTunIfEsp1(TemplateIpsecTunIfEsp, IpsecTunTests):
+    """ Ipsec ESP - TUN tests """
+    pass
+
+
+class TestIpsecTunIfEsp2(TemplateIpsecTunIfEsp, IpsecTcpTests):
+    """ Ipsec ESP - TCP tests """
+    pass
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/test/vpp_interface.py b/test/vpp_interface.py
index 194a0c4fb32..e14a31eb722 100644
--- a/test/vpp_interface.py
+++ b/test/vpp_interface.py
@@ -2,7 +2,6 @@ from abc import abstractmethod, ABCMeta
 import socket
 
 from util import Host, mk_ll_addr
-from vpp_neighbor import VppNeighbor
 
 
 class VppInterface(object):
@@ -171,6 +170,9 @@ class VppInterface(object):
         self._hosts_by_ip4 = {}
         self._hosts_by_ip6 = {}
 
+    def set_sw_if_index(self, sw_if_index):
+        self._sw_if_index = sw_if_index
+
         self.generate_remote_hosts()
 
         self._local_ip4 = "172.16.%u.1" % self.sw_if_index
diff --git a/test/vpp_ipsec_tun_interface.py b/test/vpp_ipsec_tun_interface.py
new file mode 100644
index 00000000000..bd635417f02
--- /dev/null
+++ b/test/vpp_ipsec_tun_interface.py
@@ -0,0 +1,43 @@
+from vpp_tunnel_interface import VppTunnelInterface
+
+
+class VppIpsecTunInterface(VppTunnelInterface):
+    """
+    VPP IPsec Tunnel interface
+    """
+
+    def __init__(self, test, parent_if, local_spi,
+                 remote_spi, crypto_alg, local_crypto_key, remote_crypto_key,
+                 integ_alg, local_integ_key, remote_integ_key):
+        super(VppIpsecTunInterface, self).__init__(test, parent_if)
+        self.local_spi = local_spi
+        self.remote_spi = remote_spi
+        self.crypto_alg = crypto_alg
+        self.local_crypto_key = local_crypto_key
+        self.remote_crypto_key = remote_crypto_key
+        self.integ_alg = integ_alg
+        self.local_integ_key = local_integ_key
+        self.remote_integ_key = remote_integ_key
+
+    def add_vpp_config(self):
+        r = self.test.vapi.ipsec_tunnel_if_add_del(
+            self.parent_if.local_ip4n, self.parent_if.remote_ip4n,
+            self.remote_spi, self.local_spi, self.crypto_alg,
+            self.local_crypto_key, self.remote_crypto_key, self.integ_alg,
+            self.local_integ_key, self.remote_integ_key)
+        self.set_sw_if_index(r.sw_if_index)
+        self.generate_remote_hosts()
+        self.test.registry.register(self, self.test.logger)
+
+    def remove_vpp_config(self):
+        self.test.vapi.ipsec_tunnel_if_add_del(
+            self.parent_if.local_ip4n, self.parent_if.remote_ip4n,
+            self.remote_spi, self.local_spi, self.crypto_alg,
+            self.local_crypto_key, self.remote_crypto_key, self.integ_alg,
+            self.local_integ_key, self.remote_integ_key, is_add=0)
+
+    def __str__(self):
+        return self.object_id()
+
+    def object_id(self):
+        return "ipsec-tun-if-%d" % self._sw_if_index
diff --git a/test/vpp_papi_provider.py b/test/vpp_papi_provider.py
index 3130ad06c88..32c8eebef01 100644
--- a/test/vpp_papi_provider.py
+++ b/test/vpp_papi_provider.py
@@ -3163,53 +3163,28 @@ class VppPapiProvider(object):
     def ipsec_sad_add_del_entry(self,
                                 sad_id,
                                 spi,
+                                integrity_algorithm,
+                                integrity_key,
+                                crypto_algorithm,
+                                crypto_key,
+                                protocol,
                                 tunnel_src_address='',
                                 tunnel_dst_address='',
-                                protocol=0,
-                                integrity_algorithm=2,
-                                integrity_key_length=0,
-                                integrity_key='C91KUR9GYMm5GfkEvNjX',
-                                crypto_algorithm=1,
-                                crypto_key_length=0,
-                                crypto_key='JPjyOWBeVEQiMe7h',
-                                is_add=1,
                                 is_tunnel=1,
+                                is_add=1,
                                 udp_encap=0):
         """ IPSEC SA add/del
-        Sample CLI : 'ipsec sa add 10 spi 1001 esp \
-            crypto-key 4a506a794f574265564551694d653768 \
-            crypto-alg aes-cbc-128 \
-            integ-key 4339314b55523947594d6d3547666b45764e6a58 \
-            integ-alg sha1-96 tunnel-src 192.168.100.3 \
-            tunnel-dst 192.168.100.2'
-        Sample CLI : 'ipsec sa add 20 spi 2001 \
-            integ-key 4339314b55523947594d6d3547666b45764e6a58 \
-            integ-alg sha1-96'
-
-        :param sad_id -  Security Association ID to be \
-            created or deleted. mandatory
-        :param spi - security param index of the SA in decimal. mandatory
-        :param tunnel_src_address - incase of tunnel mode outer src address .\
-             mandatory for tunnel mode
-        :param tunnel_dst_address - incase of transport mode \
-             outer dst address. mandatory for tunnel mode
-        :param protocol - AH(0) or ESP(1) protocol (Default 0 - AH). optional
-        :param integrity_algorithm - value range 1-6 Default(2 - SHA1_96).\
-             optional **
-        :param integrity_key - value in string \
-             (Default C91KUR9GYMm5GfkEvNjX).optional
-        :param integrity_key_length - length of the key string in bytes\
-             (Default 0 - integrity disabled). optional
-        :param crypto_algorithm - value range 1-11 Default \
-             (1- AES_CBC_128).optional **
-        :param crypto_key - value in string(Default JPjyOWBeVEQiMe7h).optional
-        :param crypto_key_length - length of the key string in bytes\
-             (Default 0 - crypto disabled). optional
-        :param is_add - add(1) or del(0) ipsec SA entry(Default 1 - add) .\
-             optional
-        :param is_tunnel - tunnel mode (1) or transport mode(0) \
-             (Default 1 - tunnel). optional
-        :returns: reply from the API
+        :param sad_id: security association ID
+        :param spi: security param index of the SA in decimal
+        :param integrity_algorithm:
+        :param integrity_key:
+        :param crypto_algorithm:
+        :param crypto_key:
+        :param protocol: AH(0) or ESP(1) protocol
+        :param tunnel_src_address: tunnel mode outer src address
+        :param tunnel_dst_address: tunnel mode outer dst address
+        :param is_add:
+        :param is_tunnel:
         :** reference /vpp/src/vnet/ipsec/ipsec.h file for enum values of
              crypto and ipsec algorithms
         """
@@ -3221,10 +3196,11 @@ class VppPapiProvider(object):
              'tunnel_dst_address': tunnel_dst_address,
              'protocol': protocol,
              'integrity_algorithm': integrity_algorithm,
-             'integrity_key_length': integrity_key_length,
+             'integrity_key_length': len(integrity_key),
              'integrity_key': integrity_key,
              'crypto_algorithm': crypto_algorithm,
-             'crypto_key_length': crypto_key_length,
+             'crypto_key_length': len(crypto_key) if crypto_key is not None
+             else 0,
              'crypto_key': crypto_key,
              'is_add': is_add,
              'is_tunnel': is_tunnel,
@@ -3232,6 +3208,7 @@ class VppPapiProvider(object):
 
     def ipsec_spd_add_del_entry(self,
                                 spd_id,
+                                sa_id,
                                 local_address_start,
                                 local_address_stop,
                                 remote_address_start,
@@ -3241,7 +3218,6 @@ class VppPapiProvider(object):
                                 remote_port_start=0,
                                 remote_port_stop=65535,
                                 protocol=0,
-                                sa_id=10,
                                 policy=0,
                                 priority=100,
                                 is_outbound=1,
@@ -3249,35 +3225,28 @@ class VppPapiProvider(object):
                                 is_ip_any=0):
         """ IPSEC policy SPD add/del   -
                     Wrapper to configure ipsec SPD policy entries in VPP
-        Sample CLI : 'ipsec policy add spd 1 inbound priority 10 action \
-                     protect sa 20 local-ip-range 192.168.4.4 - 192.168.4.4 \
-                     remote-ip-range 192.168.3.3 - 192.168.3.3'
-
-        :param spd_id -  SPD ID for the policy . mandatory
-        :param local_address_start - local-ip-range start address . mandatory
-        :param local_address_stop  - local-ip-range stop address . mandatory
-        :param remote_address_start - remote-ip-range start address . mandatory
-        :param remote_address_stop  - remote-ip-range stop address . mandatory
-        :param local_port_start - (Default 0) . optional
-        :param local_port_stop - (Default 65535). optional
-        :param remote_port_start - (Default 0). optional
-        :param remote_port_stop - (Default 65535). optional
-        :param protocol - Any(0), AH(51) & ESP(50) protocol (Default 0 - Any).
-               optional
-        :param sa_id -  Security Association ID for mapping it to SPD
-               (default 10).   optional
-        :param policy - bypass(0), discard(1), resolve(2) or protect(3)action
-               (Default 0 - bypass). optional
-        :param priotity - value for the spd action (Default 100). optional
-        :param is_outbound - flag for inbound(0) or outbound(1)
-               (Default 1 - outbound). optional
-        :param is_add flag - for addition(1) or deletion(0) of the spd
-               (Default 1 - addtion). optional
-        :returns: reply from the API
+        :param spd_id: SPD ID for the policy
+        :param local_address_start: local-ip-range start address
+        :param local_address_stop : local-ip-range stop address
+        :param remote_address_start: remote-ip-range start address
+        :param remote_address_stop : remote-ip-range stop address
+        :param local_port_start: (Default value = 0)
+        :param local_port_stop: (Default value = 65535)
+        :param remote_port_start: (Default value = 0)
+        :param remote_port_stop: (Default value = 65535)
+        :param protocol: Any(0), AH(51) & ESP(50) protocol (Default value = 0)
+        :param sa_id: Security Association ID for mapping it to SPD
+        :param policy: bypass(0), discard(1), resolve(2) or protect(3) action
+               (Default value = 0)
+        :param priority: value for the spd action (Default value = 100)
+        :param is_outbound: flag for inbound(0) or outbound(1)
+               (Default value = 1)
+        :param is_add: (Default value = 1)
         """
         return self.api(
             self.papi.ipsec_spd_add_del_entry,
             {'spd_id': spd_id,
+             'sa_id': sa_id,
              'local_address_start': local_address_start,
              'local_address_stop': local_address_stop,
              'remote_address_start': remote_address_start,
@@ -3291,9 +3260,30 @@ class VppPapiProvider(object):
              'policy': policy,
              'priority': priority,
              'is_outbound': is_outbound,
-             'sa_id': sa_id,
              'is_ip_any': is_ip_any})
 
+    def ipsec_tunnel_if_add_del(self, local_ip, remote_ip, local_spi,
+                                remote_spi, crypto_alg, local_crypto_key,
+                                remote_crypto_key, integ_alg, local_integ_key,
+                                remote_integ_key, is_add=1, esn=0,
+                                anti_replay=1, renumber=0, show_instance=0):
+        return self.api(
+            self.papi.ipsec_tunnel_if_add_del,
+            {'local_ip': local_ip, 'remote_ip': remote_ip,
+             'local_spi': local_spi, 'remote_spi': remote_spi,
+             'crypto_alg': crypto_alg,
+             'local_crypto_key_len': len(local_crypto_key),
+             'local_crypto_key': local_crypto_key,
+             'remote_crypto_key_len': len(remote_crypto_key),
+             'remote_crypto_key': remote_crypto_key, 'integ_alg': integ_alg,
+             'local_integ_key_len': len(local_integ_key),
+             'local_integ_key': local_integ_key,
+             'remote_integ_key_len': len(remote_integ_key),
+             'remote_integ_key': remote_integ_key, 'is_add': is_add,
+             'esn': esn, 'anti_replay': anti_replay, 'renumber': renumber,
+             'show_instance': show_instance
+             })
+
     def app_namespace_add(self,
                           namespace_id,
                           ip4_fib_id=0,
diff --git a/test/vpp_pg_interface.py b/test/vpp_pg_interface.py
index 81e9714a37a..1300f1f1f00 100644
--- a/test/vpp_pg_interface.py
+++ b/test/vpp_pg_interface.py
@@ -84,11 +84,11 @@ class VppPGInterface(VppInterface):
 
     def __init__(self, test, pg_index):
         """ Create VPP packet-generator interface """
-        r = test.vapi.pg_create_interface(pg_index)
-        self._sw_if_index = r.sw_if_index
-
         super(VppPGInterface, self).__init__(test)
 
+        r = test.vapi.pg_create_interface(pg_index)
+        self.set_sw_if_index(r.sw_if_index)
+
         self._in_history_counter = 0
         self._out_history_counter = 0
         self._out_assert_counter = 0
diff --git a/test/vpp_tunnel_interface.py b/test/vpp_tunnel_interface.py
new file mode 100644
index 00000000000..c74f58532f2
--- /dev/null
+++ b/test/vpp_tunnel_interface.py
@@ -0,0 +1,32 @@
+from abc import abstractmethod, ABCMeta
+from vpp_pg_interface import is_ipv6_misc
+from vpp_interface import VppInterface
+
+
+class VppTunnelInterface(VppInterface):
+    """ VPP tunnel interface abstration """
+    __metaclass__ = ABCMeta
+
+    @abstractmethod
+    def __init__(self, test, parent_if):
+        super(VppTunnelInterface, self).__init__(test)
+        self.parent_if = parent_if
+
+    @property
+    def local_mac(self):
+        return self.parent_if.local_mac
+
+    @property
+    def remote_mac(self):
+        return self.parent_if.remote_mac
+
+    def enable_capture(self):
+        return self.parent_if.enable_capture()
+
+    def add_stream(self, pkts):
+        return self.parent_if.add_stream(pkts)
+
+    def get_capture(self, expected_count=None, remark=None, timeout=1,
+                    filter_out_fn=is_ipv6_misc):
+        return self.parent_if.get_capture(expected_count, remark, timeout,
+                                          filter_out_fn)