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vpp/test/template_ipsec.py
Neale Ranns 84ac8ac369 IPSEC: IPv6 ESP transport mode incorrect packet length and checksum (VPP-1654) 
Change-Id: Ia3474e5bfea5764eae9b2987bf78296535df6778
Signed-off-by: Neale Ranns <nranns@cisco.com>
2019-04-19 04:02:59 +00:00

738 lines
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Python
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import unittest
import socket
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
from framework import VppTestCase, VppTestRunner
from util import ppp, reassemble4
from vpp_papi import VppEnum
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
def __init__(self):
self.remote_tun_if_host = '1.1.1.1'
self.remote_tun_if_host6 = '1111::1'
self.scapy_tun_sa_id = 10
self.scapy_tun_spi = 1001
self.vpp_tun_sa_id = 20
self.vpp_tun_spi = 1000
self.scapy_tra_sa_id = 30
self.scapy_tra_spi = 2001
self.vpp_tra_sa_id = 40
self.vpp_tra_spi = 2000
self.auth_algo_vpp_id = (VppEnum.vl_api_ipsec_integ_alg_t.
IPSEC_API_INTEG_ALG_SHA1_96)
self.auth_algo = 'HMAC-SHA1-96' # scapy name
self.auth_key = 'C91KUR9GYMm5GfkEvNjX'
self.crypt_algo_vpp_id = (VppEnum.vl_api_ipsec_crypto_alg_t.
IPSEC_API_CRYPTO_ALG_AES_CBC_128)
self.crypt_algo = 'AES-CBC' # scapy name
self.crypt_key = 'JPjyOWBeVEQiMe7h'
self.crypt_salt = ''
self.flags = 0
self.nat_header = None
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
def __init__(self):
self.remote_tun_if_host = '1111:1111:1111:1111:1111:1111:1111:1111'
self.remote_tun_if_host4 = '1.1.1.1'
self.scapy_tun_sa_id = 50
self.scapy_tun_spi = 3001
self.vpp_tun_sa_id = 60
self.vpp_tun_spi = 3000
self.scapy_tra_sa_id = 70
self.scapy_tra_spi = 4001
self.vpp_tra_sa_id = 80
self.vpp_tra_spi = 4000
self.auth_algo_vpp_id = (VppEnum.vl_api_ipsec_integ_alg_t.
IPSEC_API_INTEG_ALG_SHA1_96)
self.auth_algo = 'HMAC-SHA1-96' # scapy name
self.auth_key = 'C91KUR9GYMm5GfkEvNjX'
self.crypt_algo_vpp_id = (VppEnum.vl_api_ipsec_crypto_alg_t.
IPSEC_API_CRYPTO_ALG_AES_CBC_128)
self.crypt_algo = 'AES-CBC' # scapy name
self.crypt_key = 'JPjyOWBeVEQiMe7h'
self.crypt_salt = ''
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_ESN))
p.scapy_tun_sa = SecurityAssociation(
encryption_type, spi=p.vpp_tun_spi,
crypt_algo=p.crypt_algo, crypt_key=p.crypt_key + p.crypt_salt,
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 + p.crypt_salt,
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 = bool(p.flags & (VppEnum.vl_api_ipsec_sad_flags_t.
IPSEC_API_SAD_FLAG_USE_ESN))
p.scapy_tra_sa = SecurityAssociation(
encryption_type,
spi=p.vpp_tra_spi,
crypt_algo=p.crypt_algo,
crypt_key=p.crypt_key + p.crypt_salt,
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 + p.crypt_salt,
auth_algo=p.auth_algo,
auth_key=p.auth_key,
nat_t_header=p.nat_header,
use_esn=use_esn)
class TemplateIpsec(VppTestCase):
"""
TRANSPORT MODE:
------ encrypt ---
|tra_if| <-------> |VPP|
------ decrypt ---
TUNNEL MODE:
------ encrypt --- plain ---
|tun_if| <------- |VPP| <------ |pg1|
------ --- ---
------ decrypt --- plain ---
|tun_if| -------> |VPP| ------> |pg1|
------ --- ---
"""
tun_spd_id = 1
tra_spd_id = 2
def ipsec_select_backend(self):
""" empty method to be overloaded when necessary """
pass
@classmethod
def setUpClass(cls):
super(TemplateIpsec, cls).setUpClass()
@classmethod
def tearDownClass(cls):
super(TemplateIpsec, cls).tearDownClass()
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 config_interfaces(self):
self.create_pg_interfaces(range(3))
self.interfaces = list(self.pg_interfaces)
for i in self.interfaces:
i.admin_up()
i.config_ip4()
i.resolve_arp()
i.config_ip6()
i.resolve_ndp()
def setUp(self):
super(TemplateIpsec, self).setUp()
self.setup_params()
self.vpp_esp_protocol = (VppEnum.vl_api_ipsec_proto_t.
IPSEC_API_PROTO_ESP)
self.vpp_ah_protocol = (VppEnum.vl_api_ipsec_proto_t.
IPSEC_API_PROTO_AH)
self.config_interfaces()
self.ipsec_select_backend()
def unconfig_interfaces(self):
for i in self.interfaces:
i.admin_down()
i.unconfig_ip4()
i.unconfig_ip6()
def tearDown(self):
super(TemplateIpsec, self).tearDown()
self.unconfig_interfaces()
if not self.vpp_dead:
self.vapi.cli("show hardware")
def gen_encrypt_pkts(self, sa, sw_intf, src, dst, count=1,
payload_size=54):
return [Ether(src=sw_intf.remote_mac, dst=sw_intf.local_mac) /
sa.encrypt(IP(src=src, dst=dst) /
ICMP() / Raw('X' * payload_size))
for i in range(count)]
def gen_encrypt_pkts6(self, sa, sw_intf, src, dst, count=1,
payload_size=54):
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='X' * payload_size))
for i in range(count)]
def gen_pkts(self, sw_intf, src, dst, count=1, payload_size=54):
return [Ether(src=sw_intf.remote_mac, dst=sw_intf.local_mac) /
IP(src=src, dst=dst) / ICMP() / Raw('X' * payload_size)
for i in range(count)]
def gen_pkts6(self, sw_intf, src, dst, count=1, payload_size=54):
return [Ether(src=sw_intf.remote_mac, dst=sw_intf.local_mac) /
IPv6(src=src, dst=dst) /
ICMPv6EchoRequest(id=0, seq=1, data='X' * payload_size)
for i in range(count)]
class IpsecTcp(object):
def verify_tcp_checksum(self):
self.vapi.cli("test http server")
p = self.params[socket.AF_INET]
config_tun_params(p, self.encryption_type, self.tun_if)
send = (Ether(src=self.tun_if.remote_mac, dst=self.tun_if.local_mac) /
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 = p.vpp_tun_sa.decrypt(recv[IP])
self.assert_packet_checksums_valid(decrypted)
class IpsecTcpTests(IpsecTcp):
def test_tcp_checksum(self):
""" verify checksum correctness for vpp generated packets """
self.verify_tcp_checksum()
class IpsecTra4(object):
""" verify methods for Transport v4 """
def verify_tra_anti_replay(self, count=1):
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,
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=1))
recv_pkts = self.send_and_expect(self.tra_if, [pkt], self.tra_if)
# now move the window over to 235
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=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,
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=172))
recv_pkts = self.send_and_expect(self.tra_if, [pkt], self.tra_if)
# a packet that does not decrypt does not move the window forward
bogus_sa = SecurityAssociation(self.encryption_type,
p.vpp_tra_spi)
pkt = (Ether(src=self.tra_if.remote_mac,
dst=self.tra_if.local_mac) /
bogus_sa.encrypt(IP(src=self.tra_if.remote_ip4,
dst=self.tra_if.local_ip4) /
ICMP(),
seq_num=350))
self.send_and_assert_no_replies(self.tra_if, pkt * 17)
self.assert_packet_counter_equal(
'/err/%s/Integrity check failed' % self.tra4_decrypt_node_name, 17)
# which we can determine since this packet is still in the window
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=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
def verify_tra_basic4(self, count=1):
""" ipsec v4 transport basic test """
self.vapi.cli("clear errors")
try:
p = self.params[socket.AF_INET]
send_pkts = self.gen_encrypt_pkts(p.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)
for rx in recv_pkts:
self.assertEqual(len(rx) - len(Ether()), rx[IP].len)
self.assert_packet_checksums_valid(rx)
try:
decrypted = p.vpp_tra_sa.decrypt(rx[IP])
self.assert_packet_checksums_valid(decrypted)
except:
self.logger.debug(ppp("Unexpected packet:", rx))
raise
finally:
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)
class IpsecTra4Tests(IpsecTra4):
""" UT test methods for Transport v4 """
def test_tra_anti_replay(self):
""" ipsec v4 transport anti-reply test """
self.verify_tra_anti_replay(count=1)
def test_tra_basic(self, count=1):
""" ipsec v4 transport basic test """
self.verify_tra_basic4(count=1)
def test_tra_burst(self):
""" ipsec v4 transport burst test """
self.verify_tra_basic4(count=257)
class IpsecTra6(object):
""" verify methods for Transport v6 """
def verify_tra_basic6(self, count=1):
self.vapi.cli("clear errors")
try:
p = self.params[socket.AF_INET6]
send_pkts = self.gen_encrypt_pkts6(p.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 rx in recv_pkts:
self.assertEqual(len(rx) - len(Ether()) - len(IPv6()),
rx[IPv6].plen)
try:
decrypted = p.vpp_tra_sa.decrypt(rx[IPv6])
self.assert_packet_checksums_valid(decrypted)
except:
self.logger.debug(ppp("Unexpected packet:", rx))
raise
finally:
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)
class IpsecTra6Tests(IpsecTra6):
""" UT test methods for Transport v6 """
def test_tra_basic6(self):
""" ipsec v6 transport basic test """
self.verify_tra_basic6(count=1)
def test_tra_burst6(self):
""" ipsec v6 transport burst test """
self.verify_tra_basic6(count=257)
class IpsecTra46Tests(IpsecTra4Tests, IpsecTra6Tests):
""" UT test methods for Transport v6 and v4"""
pass
class IpsecTun4(object):
""" verify methods for Tunnel v4 """
def verify_counters(self, p, count):
if (hasattr(p, "spd_policy_in_any")):
pkts = p.spd_policy_in_any.get_stats()['packets']
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)
def verify_decrypted(self, p, rxs):
for rx in rxs:
self.assert_equal(rx[IP].src, p.remote_tun_if_host)
self.assert_equal(rx[IP].dst, self.pg1.remote_ip4)
self.assert_packet_checksums_valid(rx)
def verify_encrypted(self, p, sa, rxs):
decrypt_pkts = []
for rx in rxs:
self.assert_packet_checksums_valid(rx)
self.assertEqual(len(rx) - len(Ether()), rx[IP].len)
try:
decrypt_pkt = p.vpp_tun_sa.decrypt(rx[IP])
if not decrypt_pkt.haslayer(IP):
decrypt_pkt = IP(decrypt_pkt[Raw].load)
decrypt_pkts.append(decrypt_pkt)
self.assert_equal(decrypt_pkt.src, self.pg1.remote_ip4)
self.assert_equal(decrypt_pkt.dst, p.remote_tun_if_host)
except:
self.logger.debug(ppp("Unexpected packet:", rx))
try:
self.logger.debug(ppp("Decrypted packet:", decrypt_pkt))
except:
pass
raise
pkts = reassemble4(decrypt_pkts)
for pkt in pkts:
self.assert_packet_checksums_valid(pkt)
def verify_tun_44(self, p, count=1, payload_size=64, n_rx=None):
self.vapi.cli("clear errors")
if not n_rx:
n_rx = count
try:
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.tun_if, send_pkts, self.pg1)
self.verify_decrypted(p, recv_pkts)
send_pkts = self.gen_pkts(self.pg1, src=self.pg1.remote_ip4,
dst=p.remote_tun_if_host, count=count,
payload_size=payload_size)
recv_pkts = self.send_and_expect(self.pg1, send_pkts,
self.tun_if, n_rx)
self.verify_encrypted(p, p.vpp_tun_sa, recv_pkts)
finally:
self.logger.info(self.vapi.ppcli("show error"))
self.logger.info(self.vapi.ppcli("show ipsec"))
self.verify_counters(p, count)
def verify_tun_64(self, p, count=1):
self.vapi.cli("clear errors")
try:
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_host6,
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_host6)
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_host6, count=count)
recv_pkts = self.send_and_expect(self.pg1, send_pkts, self.tun_if)
for recv_pkt in recv_pkts:
try:
decrypt_pkt = p.vpp_tun_sa.decrypt(recv_pkt[IP])
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_host6)
self.assert_packet_checksums_valid(decrypt_pkt)
except:
self.logger.error(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"))
self.verify_counters(p, count)
class IpsecTun4Tests(IpsecTun4):
""" UT test methods for Tunnel v4 """
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.verify_tun_44(self.params[socket.AF_INET], count=257)
class IpsecTun6(object):
""" verify methods for Tunnel v6 """
def verify_counters(self, p, count):
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)
def verify_tun_66(self, p, count=1):
""" ipsec 6o6 tunnel basic test """
self.vapi.cli("clear errors")
try:
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.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:
self.assertEqual(len(recv_pkt) - len(Ether()) - len(IPv6()),
recv_pkt[IPv6].plen)
try:
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.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"))
self.verify_counters(p, count)
def verify_tun_46(self, p, count=1):
""" ipsec 4o6 tunnel basic test """
self.vapi.cli("clear errors")
try:
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_host4,
dst=self.pg1.remote_ip4,
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, p.remote_tun_if_host4)
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=p.remote_tun_if_host4,
count=count)
recv_pkts = self.send_and_expect(self.pg1, send_pkts, self.tun_if)
for recv_pkt in recv_pkts:
try:
decrypt_pkt = p.vpp_tun_sa.decrypt(recv_pkt[IPv6])
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_host4)
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"))
self.verify_counters(p, count)
class IpsecTun6Tests(IpsecTun6):
""" UT test methods for Tunnel v6 """
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.verify_tun_66(self.params[socket.AF_INET6], count=257)
class IpsecTun46Tests(IpsecTun4Tests, IpsecTun6Tests):
""" UT test methods for Tunnel v6 & v4 """
pass
if __name__ == '__main__':
unittest.main(testRunner=VppTestRunner)
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