ipsec: add missing ipv6 ah code & ipv6 tests

Change-Id: I89e90193ded1beb6cb0950c15737f9467efac1c3
Signed-off-by: Klement Sekera <ksekera@cisco.com>

1 files changed, 207 insertions, 81 deletions

diff --git a/test/template_ipsec.py b/test/template_ipsec.py
index 9d95185cb9e..bf13d71f631 100644
--- a/test/template_ipsec.py
+++ b/test/template_ipsec.py
@@ -1,13 +1,69 @@
 import unittest
+import socket
 
 from scapy.layers.inet import IP, ICMP, TCP
 from scapy.layers.ipsec import SecurityAssociation
 from scapy.layers.l2 import Ether, Raw
+from scapy.layers.inet6 import IPv6, ICMPv6EchoRequest
 
 from framework import VppTestCase, VppTestRunner
 from util import ppp
 
 
+class IPsecIPv4Params(object):
+    addr_type = socket.AF_INET
+    addr_any = "0.0.0.0"
+    addr_bcast = "255.255.255.255"
+    addr_len = 32
+    is_ipv6 = 0
+    remote_tun_if_host = '1.1.1.1'
+
+    scapy_tun_sa_id = 10
+    scapy_tun_spi = 1001
+    vpp_tun_sa_id = 20
+    vpp_tun_spi = 1000
+
+    scapy_tra_sa_id = 30
+    scapy_tra_spi = 2001
+    vpp_tra_sa_id = 40
+    vpp_tra_spi = 2000
+
+    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'
+
+
+class IPsecIPv6Params(object):
+    addr_type = socket.AF_INET6
+    addr_any = "0::0"
+    addr_bcast = "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff"
+    addr_len = 128
+    is_ipv6 = 1
+    remote_tun_if_host = '1111:1111:1111:1111:1111:1111:1111:1111'
+
+    scapy_tun_sa_id = 50
+    scapy_tun_spi = 3001
+    vpp_tun_sa_id = 60
+    vpp_tun_spi = 3000
+
+    scapy_tra_sa_id = 70
+    scapy_tra_spi = 4001
+    vpp_tra_sa_id = 80
+    vpp_tra_spi = 4000
+
+    auth_algo_vpp_id = 4  # internal VPP enum value for SHA_256_128
+    auth_algo = 'SHA2-256-128'  # scapy name
+    auth_key = 'C91KUR9GYMm5GfkEvNjX'
+
+    crypt_algo_vpp_id = 3  # internal VPP enum value for AES_CBC_256
+    crypt_algo = 'AES-CBC'  # scapy name
+    crypt_key = 'JPjyOWBeVEQiMe7hJPjyOWBeVEQiMe7h'
+
+
 class TemplateIpsec(VppTestCase):
     """
     TRANSPORT MODE:
@@ -26,33 +82,19 @@ class TemplateIpsec(VppTestCase):
     |tun_if| ------->  |VPP| ------> |pg1|
      ------             ---           ---
     """
+    ipv4_params = IPsecIPv4Params()
+    ipv6_params = IPsecIPv6Params()
+    params = {ipv4_params.addr_type: ipv4_params,
+              ipv6_params.addr_type: ipv6_params}
 
-    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()
@@ -62,63 +104,67 @@ class TemplateIpsec(VppTestCase):
             i.admin_up()
             i.config_ip4()
             i.resolve_arp()
+            i.config_ip6()
+            i.resolve_ndp()
 
     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_encrypt_pkts6(self, sa, sw_intf, src, dst, count=1):
+        return [Ether(src=sw_intf.remote_mac, dst=sw_intf.local_mac) /
+                sa.encrypt(IPv6(src=src, dst=dst) /
+                           ICMPv6EchoRequest(id=0, seq=1, data=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))
+    def gen_pkts6(self, sw_intf, src, dst, count=1):
+        return [Ether(src=sw_intf.remote_mac, dst=sw_intf.local_mac) /
+                IPv6(src=src, dst=dst) /
+                ICMPv6EchoRequest(id=0, seq=1, data=self.payload)
+                for i in range(count)]
+
+    def configure_sa_tun(self, params):
+        ip_class_by_addr_type = {socket.AF_INET: IP, socket.AF_INET6: IPv6}
+        scapy_tun_sa = SecurityAssociation(
+            self.encryption_type, spi=params.vpp_tun_spi,
+            crypt_algo=params.crypt_algo, crypt_key=params.crypt_key,
+            auth_algo=params.auth_algo, auth_key=params.auth_key,
+            tunnel_header=ip_class_by_addr_type[params.addr_type](
+                src=self.tun_if.remote_addr[params.addr_type],
+                dst=self.tun_if.local_addr[params.addr_type]))
+        vpp_tun_sa = SecurityAssociation(
+            self.encryption_type, spi=params.scapy_tun_spi,
+            crypt_algo=params.crypt_algo, crypt_key=params.crypt_key,
+            auth_algo=params.auth_algo, auth_key=params.auth_key,
+            tunnel_header=ip_class_by_addr_type[params.addr_type](
+                dst=self.tun_if.remote_addr[params.addr_type],
+                src=self.tun_if.local_addr[params.addr_type]))
         return vpp_tun_sa, scapy_tun_sa
 
-    def configure_sa_tra(self):
+    def configure_sa_tra(self, params):
         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)
+                                           spi=params.vpp_tra_spi,
+                                           crypt_algo=params.crypt_algo,
+                                           crypt_key=params.crypt_key,
+                                           auth_algo=params.auth_algo,
+                                           auth_key=params.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)
+                                         spi=params.scapy_tra_spi,
+                                         crypt_algo=params.crypt_algo,
+                                         crypt_key=params.crypt_key,
+                                         auth_algo=params.auth_algo,
+                                         auth_key=params.auth_key)
         return vpp_tra_sa, scapy_tra_sa
 
 
@@ -126,13 +172,14 @@ 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()
+        p = self.params[socket.AF_INET]
+        vpp_tun_sa, scapy_tun_sa = self.configure_sa_tun(p)
         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,
+                scapy_tun_sa.encrypt(IP(src=p.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 = self.send_and_expect(self.tun_if, [send], self.tun_if)
         recv = recv[0]
         decrypted = vpp_tun_sa.decrypt(recv[IP])
         self.assert_packet_checksums_valid(decrypted)
@@ -142,67 +189,146 @@ 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()
+            p = self.params[socket.AF_INET]
+            vpp_tra_sa, scapy_tra_sa = self.configure_sa_tra(p)
             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)
+                                             self.tra_if)
             for p in recv_pkts:
-                decrypted = vpp_tra_sa.decrypt(p[IP])
-                self.assert_packet_checksums_valid(decrypted)
+                try:
+                    decrypted = vpp_tra_sa.decrypt(p[IP])
+                    self.assert_packet_checksums_valid(decrypted)
+                except:
+                    self.logger.debug(ppp("Unexpected packet:", p))
+                    raise
         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 """
+        self.test_tra_basic(count=257)
+
+    def test_tra_basic6(self, count=1):
+        """ ipsec v6 transport basic test """
         try:
-            self.test_tra_basic(count=257)
+            p = self.params[socket.AF_INET6]
+            vpp_tra_sa, scapy_tra_sa = self.configure_sa_tra(p)
+            send_pkts = self.gen_encrypt_pkts6(scapy_tra_sa, self.tra_if,
+                                               src=self.tra_if.remote_ip6,
+                                               dst=self.tra_if.local_ip6,
+                                               count=count)
+            recv_pkts = self.send_and_expect(self.tra_if, send_pkts,
+                                             self.tra_if)
+            for p in recv_pkts:
+                try:
+                    decrypted = vpp_tra_sa.decrypt(p[IPv6])
+                    self.assert_packet_checksums_valid(decrypted)
+                except:
+                    self.logger.debug(ppp("Unexpected packet:", p))
+                    raise
         finally:
             self.logger.info(self.vapi.ppcli("show error"))
             self.logger.info(self.vapi.ppcli("show ipsec"))
 
+    def test_tra_burst6(self):
+        """ ipsec v6 transport burst test """
+        self.test_tra_basic6(count=257)
+
 
-class IpsecTunTests(object):
-    def test_tun_basic(self, count=1):
+class IpsecTun4Tests(object):
+    def test_tun_basic44(self, count=1):
         """ ipsec 4o4 tunnel basic test """
         try:
-            vpp_tun_sa, scapy_tun_sa = self.configure_sa_tun()
+            p = self.params[socket.AF_INET]
+            vpp_tun_sa, scapy_tun_sa = self.configure_sa_tun(p)
             send_pkts = self.gen_encrypt_pkts(scapy_tun_sa, self.tun_if,
-                                              src=self.remote_tun_if_host,
+                                              src=p.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)
+            recv_pkts = self.send_and_expect(self.tun_if, send_pkts, self.pg1)
             for recv_pkt in recv_pkts:
-                self.assert_equal(recv_pkt[IP].src, self.remote_tun_if_host)
+                self.assert_equal(recv_pkt[IP].src, p.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)
+                                      dst=p.remote_tun_if_host, count=count)
+            recv_pkts = self.send_and_expect(self.pg1, send_pkts, self.tun_if)
             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)
+                try:
+                    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, p.remote_tun_if_host)
+                    self.assert_packet_checksums_valid(decrypt_pkt)
+                except:
+                    self.logger.debug(ppp("Unexpected packet:", recv_pkt))
+                    try:
+                        self.logger.debug(
+                            ppp("Decrypted packet:", decrypt_pkt))
+                    except:
+                        pass
+                    raise
         finally:
             self.logger.info(self.vapi.ppcli("show error"))
             self.logger.info(self.vapi.ppcli("show ipsec"))
 
-    def test_tun_burst(self):
+    def test_tun_burst44(self):
         """ ipsec 4o4 tunnel burst test """
+        self.test_tun_basic44(count=257)
+
+
+class IpsecTun6Tests(object):
+    def test_tun_basic66(self, count=1):
+        """ ipsec 6o6 tunnel basic test """
         try:
-            self.test_tun_basic(count=257)
+            p = self.params[socket.AF_INET6]
+            vpp_tun_sa, scapy_tun_sa = self.configure_sa_tun(p)
+            send_pkts = self.gen_encrypt_pkts6(scapy_tun_sa, self.tun_if,
+                                               src=p.remote_tun_if_host,
+                                               dst=self.pg1.remote_ip6,
+                                               count=count)
+            recv_pkts = self.send_and_expect(self.tun_if, send_pkts, self.pg1)
+            for recv_pkt in recv_pkts:
+                self.assert_equal(recv_pkt[IPv6].src, p.remote_tun_if_host)
+                self.assert_equal(recv_pkt[IPv6].dst, self.pg1.remote_ip6)
+                self.assert_packet_checksums_valid(recv_pkt)
+            send_pkts = self.gen_pkts6(self.pg1, src=self.pg1.remote_ip6,
+                                       dst=p.remote_tun_if_host,
+                                       count=count)
+            recv_pkts = self.send_and_expect(self.pg1, send_pkts, self.tun_if)
+            for recv_pkt in recv_pkts:
+                try:
+                    decrypt_pkt = vpp_tun_sa.decrypt(recv_pkt[IPv6])
+                    if not decrypt_pkt.haslayer(IPv6):
+                        decrypt_pkt = IPv6(decrypt_pkt[Raw].load)
+                    self.assert_equal(decrypt_pkt.src, self.pg1.remote_ip6)
+                    self.assert_equal(decrypt_pkt.dst, p.remote_tun_if_host)
+                    self.assert_packet_checksums_valid(decrypt_pkt)
+                except:
+                    self.logger.debug(ppp("Unexpected packet:", recv_pkt))
+                    try:
+                        self.logger.debug(
+                            ppp("Decrypted packet:", decrypt_pkt))
+                    except:
+                        pass
+                    raise
         finally:
             self.logger.info(self.vapi.ppcli("show error"))
             self.logger.info(self.vapi.ppcli("show ipsec"))
 
+    def test_tun_burst66(self):
+        """ ipsec 6o6 tunnel burst test """
+        self.test_tun_basic66(count=257)
+
+
+class IpsecTunTests(IpsecTun4Tests, IpsecTun6Tests):
+    pass
+
 
 if __name__ == '__main__':
     unittest.main(testRunner=VppTestRunner)