import unittest
import socket
-from scapy.layers.inet import IP, ICMP, TCP
+from scapy.layers.inet import IP, ICMP, TCP, UDP
from scapy.layers.ipsec import SecurityAssociation
from scapy.layers.l2 import Ether, Raw
from scapy.layers.inet6 import IPv6, ICMPv6EchoRequest
IPSEC_API_CRYPTO_ALG_AES_CBC_128)
self.crypt_algo = 'AES-CBC' # scapy name
self.crypt_key = 'JPjyOWBeVEQiMe7h'
+ self.flags = 0
+ self.nat_header = None
class IPsecIPv6Params(object):
IPSEC_API_CRYPTO_ALG_AES_CBC_256)
self.crypt_algo = 'AES-CBC' # scapy name
self.crypt_key = 'JPjyOWBeVEQiMe7hJPjyOWBeVEQiMe7h'
+ self.flags = 0
+ self.nat_header = None
+
+
+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_EXTENDED_SEQ_NUM))
+ p.scapy_tun_sa = SecurityAssociation(
+ encryption_type, spi=p.vpp_tun_spi,
+ crypt_algo=p.crypt_algo, crypt_key=p.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_addr[p.addr_type],
+ dst=tun_if.local_addr[p.addr_type]),
+ 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=p.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_addr[p.addr_type],
+ src=tun_if.local_addr[p.addr_type]),
+ nat_t_header=p.nat_header,
+ use_esn=use_esn)
+
+
+def config_tra_params(p, encryption_type):
+ use_esn = p.flags & (VppEnum.vl_api_ipsec_sad_flags_t.
+ IPSEC_API_SAD_FLAG_USE_EXTENDED_SEQ_NUM)
+ p.scapy_tra_sa = SecurityAssociation(
+ encryption_type,
+ spi=p.vpp_tra_spi,
+ crypt_algo=p.crypt_algo,
+ crypt_key=p.crypt_key,
+ auth_algo=p.auth_algo,
+ auth_key=p.auth_key,
+ nat_t_header=p.nat_header,
+ use_esn=use_esn)
+ p.vpp_tra_sa = SecurityAssociation(
+ encryption_type,
+ spi=p.scapy_tra_spi,
+ crypt_algo=p.crypt_algo,
+ crypt_key=p.crypt_key,
+ auth_algo=p.auth_algo,
+ auth_key=p.auth_key,
+ nat_t_header=p.nat_header,
+ use_esn=use_esn)
class TemplateIpsec(VppTestCase):
""" empty method to be overloaded when necessary """
pass
- def setUp(self):
- super(TemplateIpsec, self).setUp()
-
+ def setup_params(self):
self.ipv4_params = IPsecIPv4Params()
self.ipv6_params = IPsecIPv6Params()
self.params = {self.ipv4_params.addr_type: self.ipv4_params,
self.ipv6_params.addr_type: self.ipv6_params}
+ def setUp(self):
+ super(TemplateIpsec, self).setUp()
+
+ self.setup_params()
self.payload = "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"\
"XXXXXXXXXXXXXXXXXXXXX"
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, params):
- params.scapy_tra_sa = SecurityAssociation(self.encryption_type,
- 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)
- params.vpp_tra_sa = SecurityAssociation(self.encryption_type,
- 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)
+ params.scapy_tra_sa = SecurityAssociation(
+ self.encryption_type,
+ 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,
+ nat_t_header=params.nat_header)
+ params.vpp_tra_sa = SecurityAssociation(
+ self.encryption_type,
+ 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,
+ nat_t_header=params.nat_header)
class IpsecTcpTests(object):
""" verify checksum correctness for vpp generated packets """
self.vapi.cli("test http server")
p = self.params[socket.AF_INET]
- vpp_tun_sa, scapy_tun_sa = self.configure_sa_tun(p)
+ config_tun_params(p, self.encryption_type, self.tun_if)
send = (Ether(src=self.tun_if.remote_mac, dst=self.tun_if.local_mac) /
- scapy_tun_sa.encrypt(IP(src=p.remote_tun_if_host,
- dst=self.tun_if.local_ip4) /
- TCP(flags='S', dport=80)))
+ p.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)
recv = recv[0]
- decrypted = vpp_tun_sa.decrypt(recv[IP])
+ decrypted = p.vpp_tun_sa.decrypt(recv[IP])
self.assert_packet_checksums_valid(decrypted)
-class IpsecTraTests(object):
+class IpsecTra4Tests(object):
def test_tra_anti_replay(self, count=1):
""" ipsec v4 transport anti-reply test """
p = self.params[socket.AF_INET]
+ use_esn = p.vpp_tra_sa.use_esn
# fire in a packet with seq number 1
pkt = (Ether(src=self.tra_if.remote_mac,
seq_num=235))
recv_pkts = self.send_and_expect(self.tra_if, [pkt], self.tra_if)
+ # replayed packets are dropped
+ self.send_and_assert_no_replies(self.tra_if, pkt * 3)
+ self.assert_packet_counter_equal(
+ '/err/%s/SA replayed packet' % self.tra4_decrypt_node_name, 3)
+
# the window size is 64 packets
# in window are still accepted
pkt = (Ether(src=self.tra_if.remote_mac,
seq_num=172))
recv_pkts = self.send_and_expect(self.tra_if, [pkt], self.tra_if)
- # out of window are dropped
- pkt = (Ether(src=self.tra_if.remote_mac,
- dst=self.tra_if.local_mac) /
- p.scapy_tra_sa.encrypt(IP(src=self.tra_if.remote_ip4,
- dst=self.tra_if.local_ip4) /
- ICMP(),
- seq_num=17))
- self.send_and_assert_no_replies(self.tra_if, pkt * 17)
-
- self.assert_packet_counter_equal(
- '/err/%s/SA replayed packet' % self.tra4_decrypt_node_name, 17)
-
# a packet that does not decrypt does not move the window forward
bogus_sa = SecurityAssociation(self.encryption_type,
p.vpp_tra_spi)
seq_num=234))
self.send_and_expect(self.tra_if, [pkt], self.tra_if)
+ # out of window are dropped
+ pkt = (Ether(src=self.tra_if.remote_mac,
+ dst=self.tra_if.local_mac) /
+ p.scapy_tra_sa.encrypt(IP(src=self.tra_if.remote_ip4,
+ dst=self.tra_if.local_ip4) /
+ ICMP(),
+ seq_num=17))
+ self.send_and_assert_no_replies(self.tra_if, pkt * 17)
+
+ if use_esn:
+ # an out of window error with ESN looks like a high sequence
+ # wrap. but since it isn't then the verify will fail.
+ self.assert_packet_counter_equal(
+ '/err/%s/Integrity check failed' %
+ self.tra4_decrypt_node_name, 34)
+
+ else:
+ self.assert_packet_counter_equal(
+ '/err/%s/SA replayed packet' %
+ self.tra4_decrypt_node_name, 20)
+
+ # valid packet moves the window over to 236
+ pkt = (Ether(src=self.tra_if.remote_mac,
+ dst=self.tra_if.local_mac) /
+ p.scapy_tra_sa.encrypt(IP(src=self.tra_if.remote_ip4,
+ dst=self.tra_if.local_ip4) /
+ ICMP(),
+ seq_num=236))
+ rx = self.send_and_expect(self.tra_if, [pkt], self.tra_if)
+ decrypted = p.vpp_tra_sa.decrypt(rx[0][IP])
+
+ # move VPP's SA to just before the seq-number wrap
+ self.vapi.cli("test ipsec sa %d seq 0xffffffff" % p.scapy_tra_sa_id)
+
+ # then fire in a packet that VPP should drop because it causes the
+ # seq number to wrap unless we're using extended.
+ pkt = (Ether(src=self.tra_if.remote_mac,
+ dst=self.tra_if.local_mac) /
+ p.scapy_tra_sa.encrypt(IP(src=self.tra_if.remote_ip4,
+ dst=self.tra_if.local_ip4) /
+ ICMP(),
+ seq_num=237))
+
+ if use_esn:
+ rx = self.send_and_expect(self.tra_if, [pkt], self.tra_if)
+ # in order to decrpyt the high order number needs to wrap
+ p.vpp_tra_sa.seq_num = 0x100000000
+ decrypted = p.vpp_tra_sa.decrypt(rx[0][IP])
+
+ # send packets with high bits set
+ p.scapy_tra_sa.seq_num = 0x100000005
+ pkt = (Ether(src=self.tra_if.remote_mac,
+ dst=self.tra_if.local_mac) /
+ p.scapy_tra_sa.encrypt(IP(src=self.tra_if.remote_ip4,
+ dst=self.tra_if.local_ip4) /
+ ICMP(),
+ seq_num=0x100000005))
+ rx = self.send_and_expect(self.tra_if, [pkt], self.tra_if)
+ # in order to decrpyt the high order number needs to wrap
+ decrypted = p.vpp_tra_sa.decrypt(rx[0][IP])
+ else:
+ self.send_and_assert_no_replies(self.tra_if, [pkt])
+ self.assert_packet_counter_equal(
+ '/err/%s/sequence number cycled' %
+ self.tra4_encrypt_node_name, 1)
+
# move the security-associations seq number on to the last we used
+ self.vapi.cli("test ipsec sa %d seq 0x15f" % p.scapy_tra_sa_id)
p.scapy_tra_sa.seq_num = 351
p.vpp_tra_sa.seq_num = 351
self.logger.info(self.vapi.ppcli("show error"))
self.logger.info(self.vapi.ppcli("show ipsec"))
+ pkts = p.tra_sa_in.get_stats()['packets']
+ self.assertEqual(pkts, count,
+ "incorrect SA in counts: expected %d != %d" %
+ (count, pkts))
+ pkts = p.tra_sa_out.get_stats()['packets']
+ self.assertEqual(pkts, count,
+ "incorrect SA out counts: expected %d != %d" %
+ (count, pkts))
+
self.assert_packet_counter_equal(self.tra4_encrypt_node_name, count)
self.assert_packet_counter_equal(self.tra4_decrypt_node_name, count)
""" ipsec v4 transport burst test """
self.test_tra_basic(count=257)
+
+class IpsecTra6Tests(object):
def test_tra_basic6(self, count=1):
""" ipsec v6 transport basic test """
self.vapi.cli("clear errors")
self.logger.info(self.vapi.ppcli("show error"))
self.logger.info(self.vapi.ppcli("show ipsec"))
+ pkts = p.tra_sa_in.get_stats()['packets']
+ self.assertEqual(pkts, count,
+ "incorrect SA in counts: expected %d != %d" %
+ (count, pkts))
+ pkts = p.tra_sa_out.get_stats()['packets']
+ self.assertEqual(pkts, count,
+ "incorrect SA out counts: expected %d != %d" %
+ (count, pkts))
self.assert_packet_counter_equal(self.tra6_encrypt_node_name, count)
self.assert_packet_counter_equal(self.tra6_decrypt_node_name, count)
self.test_tra_basic6(count=257)
-class IpsecTun4Tests(object):
- def test_tun_basic44(self, count=1):
- """ ipsec 4o4 tunnel basic test """
+class IpsecTra46Tests(IpsecTra4Tests, IpsecTra6Tests):
+ pass
+
+
+class IpsecTun4(object):
+
+ def verify_tun_44(self, p, count=1):
self.vapi.cli("clear errors")
try:
- 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,
+ config_tun_params(p, self.encryption_type, self.tun_if)
+ send_pkts = self.gen_encrypt_pkts(p.scapy_tun_sa, self.tun_if,
src=p.remote_tun_if_host,
dst=self.pg1.remote_ip4,
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[IP])
+ decrypt_pkt = p.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.assertEqual(pkts, count,
"incorrect SPD any policy: expected %d != %d" %
(count, pkts))
+
+ if (hasattr(p, "tun_sa_in")):
+ pkts = p.tun_sa_in.get_stats()['packets']
+ self.assertEqual(pkts, count,
+ "incorrect SA in counts: expected %d != %d" %
+ (count, pkts))
+ pkts = p.tun_sa_out.get_stats()['packets']
+ self.assertEqual(pkts, count,
+ "incorrect SA out counts: expected %d != %d" %
+ (count, pkts))
+
self.assert_packet_counter_equal(self.tun4_encrypt_node_name, count)
self.assert_packet_counter_equal(self.tun4_decrypt_node_name, count)
+
+class IpsecTun4Tests(IpsecTun4):
+
+ def test_tun_basic44(self):
+ """ ipsec 4o4 tunnel basic test """
+ self.verify_tun_44(self.params[socket.AF_INET], count=1)
+
def test_tun_burst44(self):
""" ipsec 4o4 tunnel burst test """
- self.test_tun_basic44(count=257)
+ self.verify_tun_44(self.params[socket.AF_INET], count=257)
+
+class IpsecTun6(object):
-class IpsecTun6Tests(object):
- def test_tun_basic66(self, count=1):
+ def verify_tun_66(self, p, count=1):
""" ipsec 6o6 tunnel basic test """
self.vapi.cli("clear errors")
try:
- 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,
+ config_tun_params(p, self.encryption_type, self.tun_if)
+ send_pkts = self.gen_encrypt_pkts6(p.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.pg1, send_pkts, self.tun_if)
for recv_pkt in recv_pkts:
try:
- decrypt_pkt = vpp_tun_sa.decrypt(recv_pkt[IPv6])
+ decrypt_pkt = p.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.logger.info(self.vapi.ppcli("show error"))
self.logger.info(self.vapi.ppcli("show ipsec"))
+ if (hasattr(p, "tun_sa_in")):
+ pkts = p.tun_sa_in.get_stats()['packets']
+ self.assertEqual(pkts, count,
+ "incorrect SA in counts: expected %d != %d" %
+ (count, pkts))
+ pkts = p.tun_sa_out.get_stats()['packets']
+ self.assertEqual(pkts, count,
+ "incorrect SA out counts: expected %d != %d" %
+ (count, pkts))
self.assert_packet_counter_equal(self.tun6_encrypt_node_name, count)
self.assert_packet_counter_equal(self.tun6_decrypt_node_name, count)
+
+class IpsecTun6Tests(IpsecTun6):
+
+ def test_tun_basic66(self):
+ """ ipsec 6o6 tunnel basic test """
+ self.verify_tun_66(self.params[socket.AF_INET6], count=1)
+
def test_tun_burst66(self):
""" ipsec 6o6 tunnel burst test """
- self.test_tun_basic66(count=257)
+ self.verify_tun_66(self.params[socket.AF_INET6], count=257)
-class IpsecTunTests(IpsecTun4Tests, IpsecTun6Tests):
+class IpsecTun46Tests(IpsecTun4Tests, IpsecTun6Tests):
pass
Code Review / vpp.git / blobdiff