fb7e7ed2cd
Not all ESP crypto algorithms require padding/alignment to be the same as AES block/IV size. CCM, CTR and GCM all have no padding/alignment requirements, and the RFCs indicate that no padding (beyond ESPs 4 octet alignment requirement) should be used unless TFC (traffic flow confidentiality) has been requested. CTR: https://tools.ietf.org/html/rfc3686#section-3.2 GCM: https://tools.ietf.org/html/rfc4106#section-3.2 CCM: https://tools.ietf.org/html/rfc4309#section-3.2 - VPP is incorrectly using the IV/AES block size to pad CTR and GCM. These modes do not require padding (beyond ESPs 4 octet requirement), as a result packets will have unnecessary padding, which will waste bandwidth at least and possibly fail certain network configurations that have finely tuned MTU configurations at worst. Fix this as well as changing the field names from ".*block_size" to ".*block_align" to better represent their actual (and only) use. Rename "block_sz" in esp_encrypt to "esp_align" and set it correctly as well. test: ipsec: Add unit-test to test for RFC correct padding/alignment test: patch scapy to not incorrectly pad ccm, ctr, gcm modes as well - Scapy is also incorrectly using the AES block size of 16 to pad CCM, CTR, and GCM cipher modes. A bug report has been opened with the and acknowledged with the upstream scapy project as well: https://github.com/secdev/scapy/issues/2322 Ticket: VPP-1928 Type: fix Signed-off-by: Christian Hopps <chopps@labn.net> Change-Id: Iaa4d6a325a2e99fdcb2c375a3395bcfe7947770e
1242 lines
52 KiB
Python
1242 lines
52 KiB
Python
import unittest
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import socket
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import struct
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from scapy.layers.inet import IP, ICMP, TCP, UDP
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from scapy.layers.ipsec import SecurityAssociation, ESP
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from scapy.layers.l2 import Ether
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from scapy.packet import raw, Raw
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from scapy.layers.inet6 import IPv6, ICMPv6EchoRequest, IPv6ExtHdrHopByHop, \
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IPv6ExtHdrFragment, IPv6ExtHdrDestOpt
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from framework import VppTestCase, VppTestRunner
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from util import ppp, reassemble4, fragment_rfc791, fragment_rfc8200
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from vpp_papi import VppEnum
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class IPsecIPv4Params(object):
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addr_type = socket.AF_INET
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addr_any = "0.0.0.0"
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addr_bcast = "255.255.255.255"
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addr_len = 32
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is_ipv6 = 0
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def __init__(self):
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self.remote_tun_if_host = '1.1.1.1'
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self.remote_tun_if_host6 = '1111::1'
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self.scapy_tun_sa_id = 100
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self.scapy_tun_spi = 1001
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self.vpp_tun_sa_id = 200
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self.vpp_tun_spi = 1000
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self.scapy_tra_sa_id = 300
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self.scapy_tra_spi = 2001
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self.vpp_tra_sa_id = 400
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self.vpp_tra_spi = 2000
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self.auth_algo_vpp_id = (VppEnum.vl_api_ipsec_integ_alg_t.
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IPSEC_API_INTEG_ALG_SHA1_96)
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self.auth_algo = 'HMAC-SHA1-96' # scapy name
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self.auth_key = b'C91KUR9GYMm5GfkEvNjX'
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self.crypt_algo_vpp_id = (VppEnum.vl_api_ipsec_crypto_alg_t.
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IPSEC_API_CRYPTO_ALG_AES_CBC_128)
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self.crypt_algo = 'AES-CBC' # scapy name
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self.crypt_key = b'JPjyOWBeVEQiMe7h'
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self.salt = 0
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self.flags = 0
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self.nat_header = None
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class IPsecIPv6Params(object):
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addr_type = socket.AF_INET6
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addr_any = "0::0"
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addr_bcast = "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff"
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addr_len = 128
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is_ipv6 = 1
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def __init__(self):
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self.remote_tun_if_host = '1111:1111:1111:1111:1111:1111:1111:1111'
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self.remote_tun_if_host4 = '1.1.1.1'
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self.scapy_tun_sa_id = 500
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self.scapy_tun_spi = 3001
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self.vpp_tun_sa_id = 600
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self.vpp_tun_spi = 3000
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self.scapy_tra_sa_id = 700
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self.scapy_tra_spi = 4001
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self.vpp_tra_sa_id = 800
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self.vpp_tra_spi = 4000
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self.auth_algo_vpp_id = (VppEnum.vl_api_ipsec_integ_alg_t.
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IPSEC_API_INTEG_ALG_SHA1_96)
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self.auth_algo = 'HMAC-SHA1-96' # scapy name
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self.auth_key = b'C91KUR9GYMm5GfkEvNjX'
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self.crypt_algo_vpp_id = (VppEnum.vl_api_ipsec_crypto_alg_t.
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IPSEC_API_CRYPTO_ALG_AES_CBC_128)
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self.crypt_algo = 'AES-CBC' # scapy name
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self.crypt_key = b'JPjyOWBeVEQiMe7h'
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self.salt = 0
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self.flags = 0
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self.nat_header = None
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def mk_scapy_crypt_key(p):
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if p.crypt_algo == "AES-GCM":
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return p.crypt_key + struct.pack("!I", p.salt)
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else:
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return p.crypt_key
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def config_tun_params(p, encryption_type, tun_if):
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ip_class_by_addr_type = {socket.AF_INET: IP, socket.AF_INET6: IPv6}
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esn_en = bool(p.flags & (VppEnum.vl_api_ipsec_sad_flags_t.
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IPSEC_API_SAD_FLAG_USE_ESN))
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p.tun_dst = tun_if.remote_addr[p.addr_type]
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p.tun_src = tun_if.local_addr[p.addr_type]
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crypt_key = mk_scapy_crypt_key(p)
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p.scapy_tun_sa = SecurityAssociation(
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encryption_type, spi=p.vpp_tun_spi,
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crypt_algo=p.crypt_algo,
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crypt_key=crypt_key,
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auth_algo=p.auth_algo, auth_key=p.auth_key,
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tunnel_header=ip_class_by_addr_type[p.addr_type](
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src=p.tun_dst,
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dst=p.tun_src),
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nat_t_header=p.nat_header,
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esn_en=esn_en)
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p.vpp_tun_sa = SecurityAssociation(
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encryption_type, spi=p.scapy_tun_spi,
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crypt_algo=p.crypt_algo,
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crypt_key=crypt_key,
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auth_algo=p.auth_algo, auth_key=p.auth_key,
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tunnel_header=ip_class_by_addr_type[p.addr_type](
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dst=p.tun_dst,
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src=p.tun_src),
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nat_t_header=p.nat_header,
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esn_en=esn_en)
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def config_tra_params(p, encryption_type):
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esn_en = bool(p.flags & (VppEnum.vl_api_ipsec_sad_flags_t.
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IPSEC_API_SAD_FLAG_USE_ESN))
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crypt_key = mk_scapy_crypt_key(p)
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p.scapy_tra_sa = SecurityAssociation(
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encryption_type,
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spi=p.vpp_tra_spi,
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crypt_algo=p.crypt_algo,
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crypt_key=crypt_key,
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auth_algo=p.auth_algo,
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auth_key=p.auth_key,
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nat_t_header=p.nat_header,
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esn_en=esn_en)
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p.vpp_tra_sa = SecurityAssociation(
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encryption_type,
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spi=p.scapy_tra_spi,
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crypt_algo=p.crypt_algo,
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crypt_key=crypt_key,
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auth_algo=p.auth_algo,
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auth_key=p.auth_key,
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nat_t_header=p.nat_header,
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esn_en=esn_en)
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class TemplateIpsec(VppTestCase):
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"""
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TRANSPORT MODE:
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------ encrypt ---
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|tra_if| <-------> |VPP|
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------ decrypt ---
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TUNNEL MODE:
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------ encrypt --- plain ---
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|tun_if| <------- |VPP| <------ |pg1|
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------ --- ---
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------ decrypt --- plain ---
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|tun_if| -------> |VPP| ------> |pg1|
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------ --- ---
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"""
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tun_spd_id = 1
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tra_spd_id = 2
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def ipsec_select_backend(self):
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""" empty method to be overloaded when necessary """
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pass
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@classmethod
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def setUpClass(cls):
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super(TemplateIpsec, cls).setUpClass()
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@classmethod
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def tearDownClass(cls):
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super(TemplateIpsec, cls).tearDownClass()
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def setup_params(self):
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self.ipv4_params = IPsecIPv4Params()
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self.ipv6_params = IPsecIPv6Params()
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self.params = {self.ipv4_params.addr_type: self.ipv4_params,
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self.ipv6_params.addr_type: self.ipv6_params}
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def config_interfaces(self):
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self.create_pg_interfaces(range(3))
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self.interfaces = list(self.pg_interfaces)
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for i in self.interfaces:
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i.admin_up()
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i.config_ip4()
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i.resolve_arp()
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i.config_ip6()
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i.resolve_ndp()
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def setUp(self):
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super(TemplateIpsec, self).setUp()
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self.setup_params()
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self.vpp_esp_protocol = (VppEnum.vl_api_ipsec_proto_t.
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IPSEC_API_PROTO_ESP)
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self.vpp_ah_protocol = (VppEnum.vl_api_ipsec_proto_t.
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IPSEC_API_PROTO_AH)
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self.config_interfaces()
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self.ipsec_select_backend()
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def unconfig_interfaces(self):
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for i in self.interfaces:
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i.admin_down()
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i.unconfig_ip4()
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i.unconfig_ip6()
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def tearDown(self):
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super(TemplateIpsec, self).tearDown()
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self.unconfig_interfaces()
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def show_commands_at_teardown(self):
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self.logger.info(self.vapi.cli("show hardware"))
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def gen_encrypt_pkts(self, p, sa, sw_intf, src, dst, count=1,
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payload_size=54):
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return [Ether(src=sw_intf.remote_mac, dst=sw_intf.local_mac) /
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sa.encrypt(IP(src=src, dst=dst) /
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ICMP() / Raw(b'X' * payload_size))
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for i in range(count)]
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def gen_encrypt_pkts6(self, p, sa, sw_intf, src, dst, count=1,
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payload_size=54):
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return [Ether(src=sw_intf.remote_mac, dst=sw_intf.local_mac) /
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sa.encrypt(IPv6(src=src, dst=dst) /
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ICMPv6EchoRequest(id=0, seq=1,
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data='X' * payload_size))
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for i in range(count)]
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def gen_pkts(self, sw_intf, src, dst, count=1, payload_size=54):
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return [Ether(src=sw_intf.remote_mac, dst=sw_intf.local_mac) /
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IP(src=src, dst=dst) / ICMP() / Raw(b'X' * payload_size)
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for i in range(count)]
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def gen_pkts6(self, sw_intf, src, dst, count=1, payload_size=54):
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return [Ether(src=sw_intf.remote_mac, dst=sw_intf.local_mac) /
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IPv6(src=src, dst=dst) /
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ICMPv6EchoRequest(id=0, seq=1, data='X' * payload_size)
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for i in range(count)]
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class IpsecTcp(object):
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def verify_tcp_checksum(self):
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self.vapi.cli("test http server")
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p = self.params[socket.AF_INET]
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send = (Ether(src=self.tun_if.remote_mac, dst=self.tun_if.local_mac) /
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p.scapy_tun_sa.encrypt(IP(src=p.remote_tun_if_host,
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dst=self.tun_if.local_ip4) /
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TCP(flags='S', dport=80)))
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self.logger.debug(ppp("Sending packet:", send))
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recv = self.send_and_expect(self.tun_if, [send], self.tun_if)
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recv = recv[0]
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decrypted = p.vpp_tun_sa.decrypt(recv[IP])
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self.assert_packet_checksums_valid(decrypted)
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class IpsecTcpTests(IpsecTcp):
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def test_tcp_checksum(self):
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""" verify checksum correctness for vpp generated packets """
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self.verify_tcp_checksum()
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class IpsecTra4(object):
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""" verify methods for Transport v4 """
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def verify_tra_anti_replay(self):
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p = self.params[socket.AF_INET]
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esn_en = p.vpp_tra_sa.esn_en
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seq_cycle_node_name = ('/err/%s/sequence number cycled' %
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self.tra4_encrypt_node_name)
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replay_node_name = ('/err/%s/SA replayed packet' %
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self.tra4_decrypt_node_name)
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if ESP == self.encryption_type and p.crypt_algo == "AES-GCM":
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hash_failed_node_name = ('/err/%s/ESP decryption failed' %
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self.tra4_decrypt_node_name)
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else:
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hash_failed_node_name = ('/err/%s/Integrity check failed' %
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self.tra4_decrypt_node_name)
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replay_count = self.statistics.get_err_counter(replay_node_name)
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hash_failed_count = self.statistics.get_err_counter(
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hash_failed_node_name)
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seq_cycle_count = self.statistics.get_err_counter(seq_cycle_node_name)
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if ESP == self.encryption_type:
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undersize_node_name = ('/err/%s/undersized packet' %
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self.tra4_decrypt_node_name)
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undersize_count = self.statistics.get_err_counter(
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undersize_node_name)
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#
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# send packets with seq numbers 1->34
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# this means the window size is still in Case B (see RFC4303
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# Appendix A)
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#
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# for reasons i haven't investigated Scapy won't create a packet with
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# seq_num=0
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#
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pkts = [(Ether(src=self.tra_if.remote_mac,
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dst=self.tra_if.local_mac) /
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p.scapy_tra_sa.encrypt(IP(src=self.tra_if.remote_ip4,
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dst=self.tra_if.local_ip4) /
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ICMP(),
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seq_num=seq))
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for seq in range(1, 34)]
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recv_pkts = self.send_and_expect(self.tra_if, pkts, self.tra_if)
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# replayed packets are dropped
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self.send_and_assert_no_replies(self.tra_if, pkts)
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replay_count += len(pkts)
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self.assert_error_counter_equal(replay_node_name, replay_count)
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#
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# now send a batch of packets all with the same sequence number
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# the first packet in the batch is legitimate, the rest bogus
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#
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pkts = (Ether(src=self.tra_if.remote_mac,
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dst=self.tra_if.local_mac) /
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p.scapy_tra_sa.encrypt(IP(src=self.tra_if.remote_ip4,
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dst=self.tra_if.local_ip4) /
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ICMP(),
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seq_num=35))
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recv_pkts = self.send_and_expect(self.tra_if, pkts * 8,
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self.tra_if, n_rx=1)
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replay_count += 7
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self.assert_error_counter_equal(replay_node_name, replay_count)
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#
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# now move the window over to 257 (more than one byte) and into Case A
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#
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pkt = (Ether(src=self.tra_if.remote_mac,
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dst=self.tra_if.local_mac) /
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p.scapy_tra_sa.encrypt(IP(src=self.tra_if.remote_ip4,
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dst=self.tra_if.local_ip4) /
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ICMP(),
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seq_num=257))
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recv_pkts = self.send_and_expect(self.tra_if, [pkt], self.tra_if)
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# replayed packets are dropped
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self.send_and_assert_no_replies(self.tra_if, pkt * 3)
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replay_count += 3
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self.assert_error_counter_equal(replay_node_name, replay_count)
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# the window size is 64 packets
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# in window are still accepted
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pkt = (Ether(src=self.tra_if.remote_mac,
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dst=self.tra_if.local_mac) /
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p.scapy_tra_sa.encrypt(IP(src=self.tra_if.remote_ip4,
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dst=self.tra_if.local_ip4) /
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ICMP(),
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seq_num=200))
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recv_pkts = self.send_and_expect(self.tra_if, [pkt], self.tra_if)
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# a packet that does not decrypt does not move the window forward
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bogus_sa = SecurityAssociation(self.encryption_type,
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p.vpp_tra_spi,
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crypt_algo=p.crypt_algo,
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crypt_key=mk_scapy_crypt_key(p)[::-1],
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auth_algo=p.auth_algo,
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auth_key=p.auth_key[::-1])
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pkt = (Ether(src=self.tra_if.remote_mac,
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dst=self.tra_if.local_mac) /
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bogus_sa.encrypt(IP(src=self.tra_if.remote_ip4,
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dst=self.tra_if.local_ip4) /
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ICMP(),
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seq_num=350))
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self.send_and_assert_no_replies(self.tra_if, pkt * 17)
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hash_failed_count += 17
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self.assert_error_counter_equal(hash_failed_node_name,
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hash_failed_count)
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# a malformed 'runt' packet
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# created by a mis-constructed SA
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if (ESP == self.encryption_type and p.crypt_algo != "NULL"):
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bogus_sa = SecurityAssociation(self.encryption_type,
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p.vpp_tra_spi)
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pkt = (Ether(src=self.tra_if.remote_mac,
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dst=self.tra_if.local_mac) /
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bogus_sa.encrypt(IP(src=self.tra_if.remote_ip4,
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dst=self.tra_if.local_ip4) /
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ICMP(),
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seq_num=350))
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self.send_and_assert_no_replies(self.tra_if, pkt * 17)
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undersize_count += 17
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self.assert_error_counter_equal(undersize_node_name,
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undersize_count)
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# which we can determine since this packet is still in the window
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pkt = (Ether(src=self.tra_if.remote_mac,
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dst=self.tra_if.local_mac) /
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p.scapy_tra_sa.encrypt(IP(src=self.tra_if.remote_ip4,
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dst=self.tra_if.local_ip4) /
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ICMP(),
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seq_num=234))
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self.send_and_expect(self.tra_if, [pkt], self.tra_if)
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#
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# out of window are dropped
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# this is Case B. So VPP will consider this to be a high seq num wrap
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# and so the decrypt attempt will fail
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#
|
|
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 esn_en:
|
|
# an out of window error with ESN looks like a high sequence
|
|
# wrap. but since it isn't then the verify will fail.
|
|
hash_failed_count += 17
|
|
self.assert_error_counter_equal(hash_failed_node_name,
|
|
hash_failed_count)
|
|
|
|
else:
|
|
replay_count += 17
|
|
self.assert_error_counter_equal(replay_node_name,
|
|
replay_count)
|
|
|
|
# valid packet moves the window over to 258
|
|
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=258))
|
|
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 TX seq-num to just before the seq-number wrap.
|
|
# then fire in a packet that VPP should drop on TX because it
|
|
# causes the TX seq number to wrap; unless we're using extened sequence
|
|
# numbers.
|
|
#
|
|
self.vapi.cli("test ipsec sa %d seq 0xffffffff" % p.scapy_tra_sa_id)
|
|
self.logger.info(self.vapi.ppcli("show ipsec sa 0"))
|
|
self.logger.info(self.vapi.ppcli("show ipsec sa 1"))
|
|
|
|
pkts = [(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=seq))
|
|
for seq in range(259, 280)]
|
|
|
|
if esn_en:
|
|
rxs = self.send_and_expect(self.tra_if, pkts, self.tra_if)
|
|
|
|
#
|
|
# in order for scapy to decrypt its SA's high order number needs
|
|
# to wrap
|
|
#
|
|
p.vpp_tra_sa.seq_num = 0x100000000
|
|
for rx in rxs:
|
|
decrypted = p.vpp_tra_sa.decrypt(rx[0][IP])
|
|
|
|
#
|
|
# wrap scapy's TX high sequence number. VPP is in case B, so it
|
|
# will consider this a high seq wrap also.
|
|
# The low seq num we set it to will place VPP's RX window in Case A
|
|
#
|
|
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)
|
|
decrypted = p.vpp_tra_sa.decrypt(rx[0][IP])
|
|
|
|
#
|
|
# A packet that has seq num between (2^32-64) and 5 is within
|
|
# the window
|
|
#
|
|
p.scapy_tra_sa.seq_num = 0xfffffffd
|
|
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=0xfffffffd))
|
|
rx = self.send_and_expect(self.tra_if, [pkt], self.tra_if)
|
|
decrypted = p.vpp_tra_sa.decrypt(rx[0][IP])
|
|
|
|
#
|
|
# While in case A we cannot wrap the high sequence number again
|
|
# becuase VPP will consider this packet to be one that moves the
|
|
# window forward
|
|
#
|
|
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=0x200000999))
|
|
self.send_and_assert_no_replies(self.tra_if, [pkt], self.tra_if)
|
|
|
|
hash_failed_count += 1
|
|
self.assert_error_counter_equal(hash_failed_node_name,
|
|
hash_failed_count)
|
|
|
|
#
|
|
# but if we move the wondow forward to case B, then we can wrap
|
|
# again
|
|
#
|
|
p.scapy_tra_sa.seq_num = 0x100000555
|
|
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=0x100000555))
|
|
rx = self.send_and_expect(self.tra_if, [pkt], self.tra_if)
|
|
decrypted = p.vpp_tra_sa.decrypt(rx[0][IP])
|
|
|
|
p.scapy_tra_sa.seq_num = 0x200000444
|
|
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=0x200000444))
|
|
rx = self.send_and_expect(self.tra_if, [pkt], self.tra_if)
|
|
decrypted = p.vpp_tra_sa.decrypt(rx[0][IP])
|
|
|
|
else:
|
|
#
|
|
# without ESN TX sequence numbers can't wrap and packets are
|
|
# dropped from here on out.
|
|
#
|
|
self.send_and_assert_no_replies(self.tra_if, pkts)
|
|
seq_cycle_count += len(pkts)
|
|
self.assert_error_counter_equal(seq_cycle_node_name,
|
|
seq_cycle_count)
|
|
|
|
# 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, payload_size=54):
|
|
""" ipsec v4 transport basic test """
|
|
self.vapi.cli("clear errors")
|
|
self.vapi.cli("clear ipsec sa")
|
|
try:
|
|
p = self.params[socket.AF_INET]
|
|
send_pkts = self.gen_encrypt_pkts(p, p.scapy_tra_sa, self.tra_if,
|
|
src=self.tra_if.remote_ip4,
|
|
dst=self.tra_if.local_ip4,
|
|
count=count,
|
|
payload_size=payload_size)
|
|
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 all"))
|
|
|
|
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-replay test """
|
|
self.verify_tra_anti_replay()
|
|
|
|
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, payload_size=54):
|
|
self.vapi.cli("clear errors")
|
|
self.vapi.cli("clear ipsec sa")
|
|
try:
|
|
p = self.params[socket.AF_INET6]
|
|
send_pkts = self.gen_encrypt_pkts6(p, p.scapy_tra_sa, self.tra_if,
|
|
src=self.tra_if.remote_ip6,
|
|
dst=self.tra_if.local_ip6,
|
|
count=count,
|
|
payload_size=payload_size)
|
|
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 all"))
|
|
|
|
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)
|
|
|
|
def gen_encrypt_pkts_ext_hdrs6(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_ext_hdrs6(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) /
|
|
IPv6ExtHdrHopByHop() /
|
|
IPv6ExtHdrFragment(id=2, offset=200) /
|
|
Raw(b'\xff' * 200)
|
|
for i in range(count)]
|
|
|
|
def verify_tra_encrypted6(self, p, sa, rxs):
|
|
decrypted = []
|
|
for rx in rxs:
|
|
self.assert_packet_checksums_valid(rx)
|
|
try:
|
|
decrypt_pkt = p.vpp_tra_sa.decrypt(rx[IPv6])
|
|
decrypted.append(decrypt_pkt)
|
|
self.assert_equal(decrypt_pkt.src, self.tra_if.local_ip6)
|
|
self.assert_equal(decrypt_pkt.dst, self.tra_if.remote_ip6)
|
|
except:
|
|
self.logger.debug(ppp("Unexpected packet:", rx))
|
|
try:
|
|
self.logger.debug(ppp("Decrypted packet:", decrypt_pkt))
|
|
except:
|
|
pass
|
|
raise
|
|
return decrypted
|
|
|
|
def verify_tra_66_ext_hdrs(self, p):
|
|
count = 63
|
|
|
|
#
|
|
# check we can decrypt with options
|
|
#
|
|
tx = self.gen_encrypt_pkts_ext_hdrs6(p.scapy_tra_sa, self.tra_if,
|
|
src=self.tra_if.remote_ip6,
|
|
dst=self.tra_if.local_ip6,
|
|
count=count)
|
|
self.send_and_expect(self.tra_if, tx, self.tra_if)
|
|
|
|
#
|
|
# injecting a packet from ourselves to be routed of box is a hack
|
|
# but it matches an outbout policy, alors je ne regrette rien
|
|
#
|
|
|
|
# one extension before ESP
|
|
tx = (Ether(src=self.pg2.remote_mac, dst=self.pg2.local_mac) /
|
|
IPv6(src=self.tra_if.local_ip6,
|
|
dst=self.tra_if.remote_ip6) /
|
|
IPv6ExtHdrFragment(id=2, offset=200) /
|
|
Raw(b'\xff' * 200))
|
|
|
|
rxs = self.send_and_expect(self.pg2, [tx], self.tra_if)
|
|
dcs = self.verify_tra_encrypted6(p, p.vpp_tra_sa, rxs)
|
|
|
|
for dc in dcs:
|
|
# for reasons i'm not going to investigate scapy does not
|
|
# created the correct headers after decrypt. but reparsing
|
|
# the ipv6 packet fixes it
|
|
dc = IPv6(raw(dc[IPv6]))
|
|
self.assert_equal(dc[IPv6ExtHdrFragment].id, 2)
|
|
|
|
# two extensions before ESP
|
|
tx = (Ether(src=self.pg2.remote_mac, dst=self.pg2.local_mac) /
|
|
IPv6(src=self.tra_if.local_ip6,
|
|
dst=self.tra_if.remote_ip6) /
|
|
IPv6ExtHdrHopByHop() /
|
|
IPv6ExtHdrFragment(id=2, offset=200) /
|
|
Raw(b'\xff' * 200))
|
|
|
|
rxs = self.send_and_expect(self.pg2, [tx], self.tra_if)
|
|
dcs = self.verify_tra_encrypted6(p, p.vpp_tra_sa, rxs)
|
|
|
|
for dc in dcs:
|
|
dc = IPv6(raw(dc[IPv6]))
|
|
self.assertTrue(dc[IPv6ExtHdrHopByHop])
|
|
self.assert_equal(dc[IPv6ExtHdrFragment].id, 2)
|
|
|
|
# two extensions before ESP, one after
|
|
tx = (Ether(src=self.pg2.remote_mac, dst=self.pg2.local_mac) /
|
|
IPv6(src=self.tra_if.local_ip6,
|
|
dst=self.tra_if.remote_ip6) /
|
|
IPv6ExtHdrHopByHop() /
|
|
IPv6ExtHdrFragment(id=2, offset=200) /
|
|
IPv6ExtHdrDestOpt() /
|
|
Raw(b'\xff' * 200))
|
|
|
|
rxs = self.send_and_expect(self.pg2, [tx], self.tra_if)
|
|
dcs = self.verify_tra_encrypted6(p, p.vpp_tra_sa, rxs)
|
|
|
|
for dc in dcs:
|
|
dc = IPv6(raw(dc[IPv6]))
|
|
self.assertTrue(dc[IPv6ExtHdrDestOpt])
|
|
self.assertTrue(dc[IPv6ExtHdrHopByHop])
|
|
self.assert_equal(dc[IPv6ExtHdrFragment].id, 2)
|
|
|
|
|
|
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 IpsecTra6ExtTests(IpsecTra6):
|
|
def test_tra_ext_hdrs_66(self):
|
|
""" ipsec 6o6 tra extension headers test """
|
|
self.verify_tra_66_ext_hdrs(self.params[socket.AF_INET6])
|
|
|
|
|
|
class IpsecTra46Tests(IpsecTra4Tests, IpsecTra6Tests):
|
|
""" UT test methods for Transport v6 and v4"""
|
|
pass
|
|
|
|
|
|
class IpsecTun4(object):
|
|
""" verify methods for Tunnel v4 """
|
|
def verify_counters4(self, p, count, n_frags=None, worker=None):
|
|
if not n_frags:
|
|
n_frags = count
|
|
if (hasattr(p, "spd_policy_in_any")):
|
|
pkts = p.spd_policy_in_any.get_stats(worker)['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(worker)['packets']
|
|
self.assertEqual(pkts, count,
|
|
"incorrect SA in counts: expected %d != %d" %
|
|
(count, pkts))
|
|
pkts = p.tun_sa_out.get_stats(worker)['packets']
|
|
self.assertEqual(pkts, count,
|
|
"incorrect SA out counts: expected %d != %d" %
|
|
(count, pkts))
|
|
|
|
self.assert_packet_counter_equal(self.tun4_encrypt_node_name, n_frags)
|
|
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_esp_padding(self, sa, esp_payload, decrypt_pkt):
|
|
align = sa.crypt_algo.block_size
|
|
if align < 4:
|
|
align = 4
|
|
exp_len = (len(decrypt_pkt) + 2 + (align - 1)) & ~(align - 1)
|
|
exp_len += sa.crypt_algo.iv_size
|
|
exp_len += sa.crypt_algo.icv_size or sa.auth_algo.icv_size
|
|
self.assertEqual(exp_len, len(esp_payload))
|
|
|
|
def verify_encrypted(self, p, sa, rxs):
|
|
decrypt_pkts = []
|
|
for rx in rxs:
|
|
if p.nat_header:
|
|
self.assertEqual(rx[UDP].dport, 4500)
|
|
self.assert_packet_checksums_valid(rx)
|
|
self.assertEqual(len(rx) - len(Ether()), rx[IP].len)
|
|
try:
|
|
rx_ip = rx[IP]
|
|
decrypt_pkt = p.vpp_tun_sa.decrypt(rx_ip)
|
|
if not decrypt_pkt.haslayer(IP):
|
|
decrypt_pkt = IP(decrypt_pkt[Raw].load)
|
|
if rx_ip.proto == socket.IPPROTO_ESP:
|
|
self.verify_esp_padding(sa, rx_ip[ESP].data, decrypt_pkt)
|
|
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")
|
|
self.vapi.cli("clear ipsec counters")
|
|
self.vapi.cli("clear ipsec sa")
|
|
if not n_rx:
|
|
n_rx = count
|
|
try:
|
|
send_pkts = self.gen_encrypt_pkts(p, p.scapy_tun_sa, self.tun_if,
|
|
src=p.remote_tun_if_host,
|
|
dst=self.pg1.remote_ip4,
|
|
count=count,
|
|
payload_size=payload_size)
|
|
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)
|
|
|
|
for rx in recv_pkts:
|
|
self.assertEqual(rx[IP].src, p.tun_src)
|
|
self.assertEqual(rx[IP].dst, p.tun_dst)
|
|
|
|
finally:
|
|
self.logger.info(self.vapi.ppcli("show error"))
|
|
self.logger.info(self.vapi.ppcli("show ipsec all"))
|
|
|
|
self.logger.info(self.vapi.ppcli("show ipsec sa 0"))
|
|
self.logger.info(self.vapi.ppcli("show ipsec sa 4"))
|
|
self.verify_counters4(p, count, n_rx)
|
|
|
|
def verify_tun_dropped_44(self, p, count=1, payload_size=64, n_rx=None):
|
|
self.vapi.cli("clear errors")
|
|
if not n_rx:
|
|
n_rx = count
|
|
try:
|
|
send_pkts = self.gen_encrypt_pkts(p, p.scapy_tun_sa, self.tun_if,
|
|
src=p.remote_tun_if_host,
|
|
dst=self.pg1.remote_ip4,
|
|
count=count)
|
|
self.send_and_assert_no_replies(self.tun_if, send_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)
|
|
self.send_and_assert_no_replies(self.pg1, send_pkts)
|
|
|
|
finally:
|
|
self.logger.info(self.vapi.ppcli("show error"))
|
|
self.logger.info(self.vapi.ppcli("show ipsec all"))
|
|
|
|
def verify_tun_reass_44(self, p):
|
|
self.vapi.cli("clear errors")
|
|
self.vapi.ip_reassembly_enable_disable(
|
|
sw_if_index=self.tun_if.sw_if_index, enable_ip4=True)
|
|
|
|
try:
|
|
send_pkts = self.gen_encrypt_pkts(p, p.scapy_tun_sa, self.tun_if,
|
|
src=p.remote_tun_if_host,
|
|
dst=self.pg1.remote_ip4,
|
|
payload_size=1900,
|
|
count=1)
|
|
send_pkts = fragment_rfc791(send_pkts[0], 1400)
|
|
recv_pkts = self.send_and_expect(self.tun_if, send_pkts,
|
|
self.pg1, n_rx=1)
|
|
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=1)
|
|
recv_pkts = self.send_and_expect(self.pg1, send_pkts,
|
|
self.tun_if)
|
|
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 all"))
|
|
|
|
self.verify_counters4(p, 1, 1)
|
|
self.vapi.ip_reassembly_enable_disable(
|
|
sw_if_index=self.tun_if.sw_if_index, enable_ip4=False)
|
|
|
|
def verify_tun_64(self, p, count=1):
|
|
self.vapi.cli("clear errors")
|
|
self.vapi.cli("clear ipsec sa")
|
|
try:
|
|
send_pkts = self.gen_encrypt_pkts6(p, 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 all"))
|
|
|
|
self.verify_counters4(p, count)
|
|
|
|
def verify_keepalive(self, p):
|
|
pkt = (Ether(src=self.tun_if.remote_mac, dst=self.tun_if.local_mac) /
|
|
IP(src=p.remote_tun_if_host, dst=self.tun_if.local_ip4) /
|
|
UDP(sport=333, dport=4500) /
|
|
Raw(b'\xff'))
|
|
self.send_and_assert_no_replies(self.tun_if, pkt*31)
|
|
self.assert_error_counter_equal(
|
|
'/err/%s/NAT Keepalive' % self.tun4_input_node, 31)
|
|
|
|
pkt = (Ether(src=self.tun_if.remote_mac, dst=self.tun_if.local_mac) /
|
|
IP(src=p.remote_tun_if_host, dst=self.tun_if.local_ip4) /
|
|
UDP(sport=333, dport=4500) /
|
|
Raw(b'\xfe'))
|
|
self.send_and_assert_no_replies(self.tun_if, pkt*31)
|
|
self.assert_error_counter_equal(
|
|
'/err/%s/Too Short' % self.tun4_input_node, 31)
|
|
|
|
|
|
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)
|
|
self.tun_if.admin_down()
|
|
self.tun_if.resolve_arp()
|
|
self.tun_if.admin_up()
|
|
self.verify_tun_44(self.params[socket.AF_INET], count=1)
|
|
|
|
def test_tun_reass_basic44(self):
|
|
""" ipsec 4o4 tunnel basic reassembly test """
|
|
self.verify_tun_reass_44(self.params[socket.AF_INET])
|
|
|
|
def test_tun_burst44(self):
|
|
""" ipsec 4o4 tunnel burst test """
|
|
self.verify_tun_44(self.params[socket.AF_INET], count=127)
|
|
|
|
|
|
class IpsecTun6(object):
|
|
""" verify methods for Tunnel v6 """
|
|
def verify_counters6(self, p_in, p_out, count, worker=None):
|
|
if (hasattr(p_in, "tun_sa_in")):
|
|
pkts = p_in.tun_sa_in.get_stats(worker)['packets']
|
|
self.assertEqual(pkts, count,
|
|
"incorrect SA in counts: expected %d != %d" %
|
|
(count, pkts))
|
|
if (hasattr(p_out, "tun_sa_out")):
|
|
pkts = p_out.tun_sa_out.get_stats(worker)['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_decrypted6(self, p, rxs):
|
|
for rx in rxs:
|
|
self.assert_equal(rx[IPv6].src, p.remote_tun_if_host)
|
|
self.assert_equal(rx[IPv6].dst, self.pg1.remote_ip6)
|
|
self.assert_packet_checksums_valid(rx)
|
|
|
|
def verify_encrypted6(self, p, sa, rxs):
|
|
for rx in rxs:
|
|
self.assert_packet_checksums_valid(rx)
|
|
self.assertEqual(len(rx) - len(Ether()) - len(IPv6()),
|
|
rx[IPv6].plen)
|
|
try:
|
|
decrypt_pkt = p.vpp_tun_sa.decrypt(rx[IPv6])
|
|
if not decrypt_pkt.haslayer(IPv6):
|
|
decrypt_pkt = IPv6(decrypt_pkt[Raw].load)
|
|
self.assert_packet_checksums_valid(decrypt_pkt)
|
|
self.assert_equal(decrypt_pkt.src, self.pg1.remote_ip6)
|
|
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
|
|
|
|
def verify_drop_tun_66(self, p_in, count=1, payload_size=64):
|
|
self.vapi.cli("clear errors")
|
|
self.vapi.cli("clear ipsec sa")
|
|
|
|
send_pkts = self.gen_encrypt_pkts6(p_in, p_in.scapy_tun_sa,
|
|
self.tun_if,
|
|
src=p_in.remote_tun_if_host,
|
|
dst=self.pg1.remote_ip6,
|
|
count=count)
|
|
self.send_and_assert_no_replies(self.tun_if, send_pkts)
|
|
self.logger.info(self.vapi.cli("sh punt stats"))
|
|
|
|
def verify_tun_66(self, p_in, p_out=None, count=1, payload_size=64):
|
|
self.vapi.cli("clear errors")
|
|
self.vapi.cli("clear ipsec sa")
|
|
if not p_out:
|
|
p_out = p_in
|
|
try:
|
|
send_pkts = self.gen_encrypt_pkts6(p_in, p_in.scapy_tun_sa,
|
|
self.tun_if,
|
|
src=p_in.remote_tun_if_host,
|
|
dst=self.pg1.remote_ip6,
|
|
count=count,
|
|
payload_size=payload_size)
|
|
recv_pkts = self.send_and_expect(self.tun_if, send_pkts, self.pg1)
|
|
self.verify_decrypted6(p_in, recv_pkts)
|
|
|
|
send_pkts = self.gen_pkts6(self.pg1, src=self.pg1.remote_ip6,
|
|
dst=p_out.remote_tun_if_host,
|
|
count=count,
|
|
payload_size=payload_size)
|
|
recv_pkts = self.send_and_expect(self.pg1, send_pkts, self.tun_if)
|
|
self.verify_encrypted6(p_out, p_out.vpp_tun_sa, recv_pkts)
|
|
|
|
for rx in recv_pkts:
|
|
self.assertEqual(rx[IPv6].src, p_out.tun_src)
|
|
self.assertEqual(rx[IPv6].dst, p_out.tun_dst)
|
|
|
|
finally:
|
|
self.logger.info(self.vapi.ppcli("show error"))
|
|
self.logger.info(self.vapi.ppcli("show ipsec all"))
|
|
self.verify_counters6(p_in, p_out, count)
|
|
|
|
def verify_tun_reass_66(self, p):
|
|
self.vapi.cli("clear errors")
|
|
self.vapi.ip_reassembly_enable_disable(
|
|
sw_if_index=self.tun_if.sw_if_index, enable_ip6=True)
|
|
|
|
try:
|
|
send_pkts = self.gen_encrypt_pkts6(p, p.scapy_tun_sa, self.tun_if,
|
|
src=p.remote_tun_if_host,
|
|
dst=self.pg1.remote_ip6,
|
|
count=1,
|
|
payload_size=1850)
|
|
send_pkts = fragment_rfc8200(send_pkts[0], 1, 1400, self.logger)
|
|
recv_pkts = self.send_and_expect(self.tun_if, send_pkts,
|
|
self.pg1, n_rx=1)
|
|
self.verify_decrypted6(p, recv_pkts)
|
|
|
|
send_pkts = self.gen_pkts6(self.pg1, src=self.pg1.remote_ip6,
|
|
dst=p.remote_tun_if_host,
|
|
count=1,
|
|
payload_size=64)
|
|
recv_pkts = self.send_and_expect(self.pg1, send_pkts,
|
|
self.tun_if)
|
|
self.verify_encrypted6(p, p.vpp_tun_sa, recv_pkts)
|
|
finally:
|
|
self.logger.info(self.vapi.ppcli("show error"))
|
|
self.logger.info(self.vapi.ppcli("show ipsec all"))
|
|
self.verify_counters6(p, p, 1)
|
|
self.vapi.ip_reassembly_enable_disable(
|
|
sw_if_index=self.tun_if.sw_if_index, enable_ip6=False)
|
|
|
|
def verify_tun_46(self, p, count=1):
|
|
""" ipsec 4o6 tunnel basic test """
|
|
self.vapi.cli("clear errors")
|
|
self.vapi.cli("clear ipsec sa")
|
|
try:
|
|
send_pkts = self.gen_encrypt_pkts(p, 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 all"))
|
|
self.verify_counters6(p, 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_reass_basic66(self):
|
|
""" ipsec 6o6 tunnel basic reassembly test """
|
|
self.verify_tun_reass_66(self.params[socket.AF_INET6])
|
|
|
|
def test_tun_burst66(self):
|
|
""" ipsec 6o6 tunnel burst test """
|
|
self.verify_tun_66(self.params[socket.AF_INET6], count=257)
|
|
|
|
|
|
class IpsecTun6HandoffTests(IpsecTun6):
|
|
""" UT test methods for Tunnel v6 with multiple workers """
|
|
worker_config = "workers 2"
|
|
|
|
def test_tun_handoff_66(self):
|
|
""" ipsec 6o6 tunnel worker hand-off test """
|
|
N_PKTS = 15
|
|
p = self.params[socket.AF_INET6]
|
|
|
|
# inject alternately on worker 0 and 1. all counts on the SA
|
|
# should be against worker 0
|
|
for worker in [0, 1, 0, 1]:
|
|
send_pkts = self.gen_encrypt_pkts6(p, p.scapy_tun_sa, self.tun_if,
|
|
src=p.remote_tun_if_host,
|
|
dst=self.pg1.remote_ip6,
|
|
count=N_PKTS)
|
|
recv_pkts = self.send_and_expect(self.tun_if, send_pkts,
|
|
self.pg1, worker=worker)
|
|
self.verify_decrypted6(p, recv_pkts)
|
|
|
|
send_pkts = self.gen_pkts6(self.pg1, src=self.pg1.remote_ip6,
|
|
dst=p.remote_tun_if_host,
|
|
count=N_PKTS)
|
|
recv_pkts = self.send_and_expect(self.pg1, send_pkts,
|
|
self.tun_if, worker=worker)
|
|
self.verify_encrypted6(p, p.vpp_tun_sa, recv_pkts)
|
|
|
|
# all counts against the first worker that was used
|
|
self.verify_counters6(p, p, 4*N_PKTS, worker=0)
|
|
|
|
|
|
class IpsecTun4HandoffTests(IpsecTun4):
|
|
""" UT test methods for Tunnel v4 with multiple workers """
|
|
worker_config = "workers 2"
|
|
|
|
def test_tun_handooff_44(self):
|
|
""" ipsec 4o4 tunnel worker hand-off test """
|
|
N_PKTS = 15
|
|
p = self.params[socket.AF_INET]
|
|
|
|
# inject alternately on worker 0 and 1. all counts on the SA
|
|
# should be against worker 0
|
|
for worker in [0, 1, 0, 1]:
|
|
send_pkts = self.gen_encrypt_pkts(p, p.scapy_tun_sa, self.tun_if,
|
|
src=p.remote_tun_if_host,
|
|
dst=self.pg1.remote_ip4,
|
|
count=N_PKTS)
|
|
recv_pkts = self.send_and_expect(self.tun_if, send_pkts,
|
|
self.pg1, worker=worker)
|
|
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=N_PKTS)
|
|
recv_pkts = self.send_and_expect(self.pg1, send_pkts,
|
|
self.tun_if, worker=worker)
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self.verify_encrypted(p, p.vpp_tun_sa, recv_pkts)
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# all counts against the first worker that was used
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self.verify_counters4(p, 4*N_PKTS, worker=0)
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class IpsecTun46Tests(IpsecTun4Tests, IpsecTun6Tests):
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""" UT test methods for Tunnel v6 & v4 """
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pass
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if __name__ == '__main__':
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unittest.main(testRunner=VppTestRunner)
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