diff options
| author |   Klement Sekera <klement.sekera@gmail.com> | 2022-04-26 19:02:15 +0200 |
|---|---|---|
| committer |   Ole Tr�an <otroan@employees.org> | 2022-05-10 18:52:08 +0000 |
| commit | d9b0c6fbf7aa5bd9af84264105b39c82028a4a29 (patch) | |
| tree | 4f786cfd8ebc2443cb11e11b74c8657204068898 /test/template_ipsec.py | |
| parent | f90348bcb4afd0af2611cefc43b17ef3042b511c (diff) | |
tests: replace pycodestyle with black
Drop pycodestyle for code style checking in favor of black. Black is
much faster, stable PEP8 compliant code style checker offering also
automatic formatting. It aims to be very stable and produce smallest
diffs. It's used by many small and big projects.
Running checkstyle with black takes a few seconds with a terse output.
Thus, test-checkstyle-diff is no longer necessary.
Expand scope of checkstyle to all python files in the repo, replacing
test-checkstyle with checkstyle-python.
Also, fixstyle-python is now available for automatic style formatting.
Note: python virtualenv has been consolidated in test/Makefile,
test/requirements*.txt which will eventually be moved to a central
location. This is required to simply the automated generation of
docker executor images in the CI.
Type: improvement
Change-Id: I022a326603485f58585e879ac0f697fceefbc9c8
Signed-off-by: Klement Sekera <klement.sekera@gmail.com>
Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
Diffstat (limited to 'test/template_ipsec.py')
| -rw-r--r-- | test/template_ipsec.py | 1581 |
1 files changed, 908 insertions, 673 deletions
diff --git a/test/template_ipsec.py b/test/template_ipsec.py index 8105f0ca52d..578c284f72e 100644 --- a/test/template_ipsec.py +++ b/test/template_ipsec.py @@ -6,16 +6,20 @@ from scapy.layers.inet import IP, ICMP, TCP, UDP from scapy.layers.ipsec import SecurityAssociation, ESP from scapy.layers.l2 import Ether from scapy.packet import raw, Raw -from scapy.layers.inet6 import IPv6, ICMPv6EchoRequest, IPv6ExtHdrHopByHop, \ - IPv6ExtHdrFragment, IPv6ExtHdrDestOpt +from scapy.layers.inet6 import ( + IPv6, + ICMPv6EchoRequest, + IPv6ExtHdrHopByHop, + IPv6ExtHdrFragment, + IPv6ExtHdrDestOpt, +) from framework import VppTestCase, VppTestRunner from util import ppp, reassemble4, fragment_rfc791, fragment_rfc8200 from vpp_papi import VppEnum -from vpp_ipsec import VppIpsecSpd, VppIpsecSpdEntry, \ - VppIpsecSpdItfBinding +from vpp_ipsec import VppIpsecSpd, VppIpsecSpdEntry, VppIpsecSpdItfBinding from ipaddress import ip_address from re import search from os import popen @@ -30,8 +34,8 @@ class IPsecIPv4Params: is_ipv6 = 0 def __init__(self): - self.remote_tun_if_host = '1.1.1.1' - self.remote_tun_if_host6 = '1111::1' + self.remote_tun_if_host = "1.1.1.1" + self.remote_tun_if_host6 = "1111::1" self.scapy_tun_sa_id = 100 self.scapy_tun_spi = 1000 @@ -48,20 +52,23 @@ class IPsecIPv4Params: self.outer_flow_label = 0 self.inner_flow_label = 0x12345 - 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 = b'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 = b'JPjyOWBeVEQiMe7h' + 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 = b"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 = b"JPjyOWBeVEQiMe7h" self.salt = 0 self.flags = 0 self.nat_header = None - self.tun_flags = (VppEnum.vl_api_tunnel_encap_decap_flags_t. - TUNNEL_API_ENCAP_DECAP_FLAG_NONE) + self.tun_flags = ( + VppEnum.vl_api_tunnel_encap_decap_flags_t.TUNNEL_API_ENCAP_DECAP_FLAG_NONE + ) self.dscp = 0 self.async_mode = False @@ -75,8 +82,8 @@ class IPsecIPv6Params: 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.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 = 500 self.scapy_tun_spi = 3001 @@ -93,20 +100,23 @@ class IPsecIPv6Params: self.outer_flow_label = 0 self.inner_flow_label = 0x12345 - 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 = b'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 = b'JPjyOWBeVEQiMe7h' + 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 = b"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 = b"JPjyOWBeVEQiMe7h" self.salt = 0 self.flags = 0 self.nat_header = None - self.tun_flags = (VppEnum.vl_api_tunnel_encap_decap_flags_t. - TUNNEL_API_ENCAP_DECAP_FLAG_NONE) + self.tun_flags = ( + VppEnum.vl_api_tunnel_encap_decap_flags_t.TUNNEL_API_ENCAP_DECAP_FLAG_NONE + ) self.dscp = 0 self.async_mode = False @@ -120,36 +130,40 @@ def mk_scapy_crypt_key(p): def config_tun_params(p, encryption_type, tun_if): ip_class_by_addr_type = {socket.AF_INET: IP, socket.AF_INET6: IPv6} - esn_en = bool(p.flags & (VppEnum.vl_api_ipsec_sad_flags_t. - IPSEC_API_SAD_FLAG_USE_ESN)) + esn_en = bool( + p.flags & (VppEnum.vl_api_ipsec_sad_flags_t.IPSEC_API_SAD_FLAG_USE_ESN) + ) p.tun_dst = tun_if.remote_addr[p.addr_type] p.tun_src = tun_if.local_addr[p.addr_type] crypt_key = mk_scapy_crypt_key(p) p.scapy_tun_sa = SecurityAssociation( - encryption_type, spi=p.vpp_tun_spi, + encryption_type, + spi=p.vpp_tun_spi, crypt_algo=p.crypt_algo, crypt_key=crypt_key, - auth_algo=p.auth_algo, auth_key=p.auth_key, - tunnel_header=ip_class_by_addr_type[p.addr_type]( - src=p.tun_dst, - dst=p.tun_src), + auth_algo=p.auth_algo, + auth_key=p.auth_key, + tunnel_header=ip_class_by_addr_type[p.addr_type](src=p.tun_dst, dst=p.tun_src), nat_t_header=p.nat_header, - esn_en=esn_en) + esn_en=esn_en, + ) p.vpp_tun_sa = SecurityAssociation( - encryption_type, spi=p.scapy_tun_spi, + encryption_type, + spi=p.scapy_tun_spi, crypt_algo=p.crypt_algo, crypt_key=crypt_key, - auth_algo=p.auth_algo, auth_key=p.auth_key, - tunnel_header=ip_class_by_addr_type[p.addr_type]( - dst=p.tun_dst, - src=p.tun_src), + auth_algo=p.auth_algo, + auth_key=p.auth_key, + tunnel_header=ip_class_by_addr_type[p.addr_type](dst=p.tun_dst, src=p.tun_src), nat_t_header=p.nat_header, - esn_en=esn_en) + esn_en=esn_en, + ) def config_tra_params(p, encryption_type): - esn_en = bool(p.flags & (VppEnum.vl_api_ipsec_sad_flags_t. - IPSEC_API_SAD_FLAG_USE_ESN)) + esn_en = bool( + p.flags & (VppEnum.vl_api_ipsec_sad_flags_t.IPSEC_API_SAD_FLAG_USE_ESN) + ) crypt_key = mk_scapy_crypt_key(p) p.scapy_tra_sa = SecurityAssociation( encryption_type, @@ -159,7 +173,8 @@ def config_tra_params(p, encryption_type): auth_algo=p.auth_algo, auth_key=p.auth_key, nat_t_header=p.nat_header, - esn_en=esn_en) + esn_en=esn_en, + ) p.vpp_tra_sa = SecurityAssociation( encryption_type, spi=p.scapy_tra_spi, @@ -168,7 +183,8 @@ def config_tra_params(p, encryption_type): auth_algo=p.auth_algo, auth_key=p.auth_key, nat_t_header=p.nat_header, - esn_en=esn_en) + esn_en=esn_en, + ) class TemplateIpsec(VppTestCase): @@ -189,11 +205,12 @@ class TemplateIpsec(VppTestCase): |tun_if| -------> |VPP| ------> |pg1| ------ --- --- """ + tun_spd_id = 1 tra_spd_id = 2 def ipsec_select_backend(self): - """ empty method to be overloaded when necessary """ + """empty method to be overloaded when necessary""" pass @classmethod @@ -205,12 +222,14 @@ class TemplateIpsec(VppTestCase): super(TemplateIpsec, cls).tearDownClass() def setup_params(self): - if not hasattr(self, 'ipv4_params'): + if not hasattr(self, "ipv4_params"): self.ipv4_params = IPsecIPv4Params() - if not hasattr(self, 'ipv6_params'): + if not hasattr(self, "ipv6_params"): self.ipv6_params = IPsecIPv6Params() - self.params = {self.ipv4_params.addr_type: self.ipv4_params, - self.ipv6_params.addr_type: self.ipv6_params} + 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)) @@ -227,10 +246,8 @@ class TemplateIpsec(VppTestCase): 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.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() @@ -250,34 +267,39 @@ class TemplateIpsec(VppTestCase): def show_commands_at_teardown(self): self.logger.info(self.vapi.cli("show hardware")) - def gen_encrypt_pkts(self, p, 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(b'X' * payload_size)) - for i in range(count)] - - def gen_encrypt_pkts6(self, p, 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, - hlim=p.inner_hop_limit, - fl=p.inner_flow_label) / - ICMPv6EchoRequest(id=0, seq=1, - data='X' * payload_size)) - for i in range(count)] + def gen_encrypt_pkts(self, p, 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(b"X" * payload_size)) + for i in range(count) + ] + + def gen_encrypt_pkts6(self, p, 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, hlim=p.inner_hop_limit, fl=p.inner_flow_label) + / 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(b'X' * payload_size) - for i in range(count)] + return [ + Ether(src=sw_intf.remote_mac, dst=sw_intf.local_mac) + / IP(src=src, dst=dst) + / ICMP() + / Raw(b"X" * payload_size) + for i in range(count) + ] def gen_pkts6(self, p, 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, - hlim=p.inner_hop_limit, fl=p.inner_flow_label) / - ICMPv6EchoRequest(id=0, seq=1, data='X' * payload_size) - for i in range(count)] + return [ + Ether(src=sw_intf.remote_mac, dst=sw_intf.local_mac) + / IPv6(src=src, dst=dst, hlim=p.inner_hop_limit, fl=p.inner_flow_label) + / ICMPv6EchoRequest(id=0, seq=1, data="X" * payload_size) + for i in range(count) + ] class IpsecTcp(object): @@ -285,10 +307,12 @@ class IpsecTcp(object): # start http cli server listener on http://0.0.0.0:80 self.vapi.cli("http cli server") p = self.params[socket.AF_INET] - 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))) + 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] @@ -298,36 +322,40 @@ class IpsecTcp(object): class IpsecTcpTests(IpsecTcp): def test_tcp_checksum(self): - """ verify checksum correctness for vpp generated packets """ + """verify checksum correctness for vpp generated packets""" self.verify_tcp_checksum() class IpsecTra4(object): - """ verify methods for Transport v4 """ + """verify methods for Transport v4""" + def get_replay_counts(self, p): - replay_node_name = ('/err/%s/SA replayed packet' % - self.tra4_decrypt_node_name[0]) + replay_node_name = "/err/%s/SA replayed packet" % self.tra4_decrypt_node_name[0] count = self.statistics.get_err_counter(replay_node_name) if p.async_mode: - replay_post_node_name = ('/err/%s/SA replayed packet' % - self.tra4_decrypt_node_name[p.async_mode]) + replay_post_node_name = ( + "/err/%s/SA replayed packet" % self.tra4_decrypt_node_name[p.async_mode] + ) count += self.statistics.get_err_counter(replay_post_node_name) return count def get_hash_failed_counts(self, p): if ESP == self.encryption_type and p.crypt_algo == "AES-GCM": - hash_failed_node_name = ('/err/%s/ESP decryption failed' % - self.tra4_decrypt_node_name[p.async_mode]) + hash_failed_node_name = ( + "/err/%s/ESP decryption failed" + % self.tra4_decrypt_node_name[p.async_mode] + ) else: - hash_failed_node_name = ('/err/%s/Integrity check failed' % - self.tra4_decrypt_node_name[p.async_mode]) + hash_failed_node_name = ( + "/err/%s/Integrity check failed" + % self.tra4_decrypt_node_name[p.async_mode] + ) count = self.statistics.get_err_counter(hash_failed_node_name) if p.async_mode: - count += self.statistics.get_err_counter( - '/err/crypto-dispatch/bad-hmac') + count += self.statistics.get_err_counter("/err/crypto-dispatch/bad-hmac") return count @@ -337,81 +365,100 @@ class IpsecTra4(object): esn_on = p.vpp_tra_sa.esn_en ar_on = p.flags & saf.IPSEC_API_SAD_FLAG_USE_ANTI_REPLAY - seq_cycle_node_name = \ - ('/err/%s/sequence number cycled (packet dropped)' % - self.tra4_encrypt_node_name) + seq_cycle_node_name = ( + "/err/%s/sequence number cycled (packet dropped)" + % self.tra4_encrypt_node_name + ) replay_count = self.get_replay_counts(p) hash_failed_count = self.get_hash_failed_counts(p) seq_cycle_count = self.statistics.get_err_counter(seq_cycle_node_name) # a few packets so we get the rx seq number above the window size and # thus can simulate a wrap with an out of window packet - 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(63, 80)] + 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(63, 80) + ] recv_pkts = self.send_and_expect(self.tra_if, pkts, self.tra_if) # these 4 packets will all choose seq-num 0 to decrpyt since none # are out of window when first checked. however, once #200 has # decrypted it will move the window to 200 and has #81 is out of # window. this packet should be dropped. - 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=200)), - (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=81)), - (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=201)), - (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=202))] + 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=200, + ) + ), + ( + 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=81, + ) + ), + ( + 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=201, + ) + ), + ( + 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=202, + ) + ), + ] # if anti-replay is off then we won't drop #81 n_rx = 3 if ar_on else 4 self.send_and_expect(self.tra_if, pkts, self.tra_if, n_rx=n_rx) # this packet is one before the wrap - 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=203))] + 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=203, + ) + ) + ] recv_pkts = self.send_and_expect(self.tra_if, pkts, self.tra_if) # move the window over half way to a wrap - 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=0x80000001))] + 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=0x80000001, + ) + ) + ] recv_pkts = self.send_and_expect(self.tra_if, pkts, self.tra_if) # anti-replay will drop old packets, no anti-replay will not - 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=0x44000001))] + 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=0x44000001, + ) + ) + ] if ar_on: self.send_and_assert_no_replies(self.tra_if, pkts) @@ -427,36 +474,48 @@ class IpsecTra4(object): p.scapy_tra_sa.seq_num = 0x100000005 # send a packet that wraps the window for both AR and no AR - 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=0x100000005))] + 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=0x100000005, + ) + ) + ] rxs = self.send_and_expect(self.tra_if, pkts, self.tra_if) for rx in rxs: decrypted = p.vpp_tra_sa.decrypt(rx[0][IP]) # move the window forward to half way to the next wrap - 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=0x180000005))] + 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=0x180000005, + ) + ) + ] rxs = self.send_and_expect(self.tra_if, pkts, self.tra_if) # a packet less than 2^30 from the current position is: # - AR: out of window and dropped # - non-AR: accepted - 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=0x170000005))] + 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=0x170000005, + ) + ) + ] if ar_on: self.send_and_assert_no_replies(self.tra_if, pkts) @@ -467,12 +526,16 @@ class IpsecTra4(object): # - AR: out of window and dropped # - non-AR: considered a wrap, but since it's not a wrap # it won't decrpyt and so will be dropped - 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=0x130000005))] + 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=0x130000005, + ) + ) + ] self.send_and_assert_no_replies(self.tra_if, pkts) @@ -481,12 +544,16 @@ class IpsecTra4(object): # - AR: out of window so considered a wrap, so accepted # - non-AR: not considered a wrap, so won't decrypt p.scapy_tra_sa.seq_num = 0x260000005 - 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=0x260000005))] + 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=0x260000005, + ) + ) + ] if ar_on: self.send_and_expect(self.tra_if, pkts, self.tra_if) else: @@ -502,44 +569,55 @@ class IpsecTra4(object): # - AR: accepted # - non-AR: not considered a wrap, so won't decrypt - 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=0x200000005)), - (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=0x200000006))] + 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=0x200000005, + ) + ), + ( + 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=0x200000006, + ) + ), + ] self.send_and_expect(self.tra_if, pkts, self.tra_if) - 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=0x260000005))] + 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=0x260000005, + ) + ) + ] self.send_and_expect(self.tra_if, pkts, self.tra_if) def verify_tra_anti_replay(self): p = self.params[socket.AF_INET] esn_en = p.vpp_tra_sa.esn_en - seq_cycle_node_name = \ - ('/err/%s/sequence number cycled (packet dropped)' % - self.tra4_encrypt_node_name) + seq_cycle_node_name = ( + "/err/%s/sequence number cycled (packet dropped)" + % self.tra4_encrypt_node_name + ) replay_count = self.get_replay_counts(p) hash_failed_count = self.get_hash_failed_counts(p) seq_cycle_count = self.statistics.get_err_counter(seq_cycle_node_name) if ESP == self.encryption_type: - undersize_node_name = ('/err/%s/undersized packet' % - self.tra4_decrypt_node_name[0]) - undersize_count = self.statistics.get_err_counter( - undersize_node_name) + undersize_node_name = ( + "/err/%s/undersized packet" % self.tra4_decrypt_node_name[0] + ) + undersize_count = self.statistics.get_err_counter(undersize_node_name) # # send packets with seq numbers 1->34 @@ -549,13 +627,16 @@ class IpsecTra4(object): # for reasons i haven't investigated Scapy won't create a packet with # seq_num=0 # - 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(1, 34)] + 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(1, 34) + ] recv_pkts = self.send_and_expect(self.tra_if, pkts, self.tra_if) # replayed packets are dropped @@ -569,14 +650,13 @@ class IpsecTra4(object): # self.vapi.cli("clear error") self.vapi.cli("clear node counters") - 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=35)) - recv_pkts = self.send_and_expect(self.tra_if, pkts * 8, - self.tra_if, n_rx=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=35, + ) + recv_pkts = self.send_and_expect(self.tra_if, pkts * 8, self.tra_if, n_rx=1) replay_count += 7 self.assertEqual(self.get_replay_counts(p), replay_count) @@ -584,12 +664,12 @@ class IpsecTra4(object): # now move the window over to 257 (more than one byte) and into Case A # self.vapi.cli("clear error") - 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=257)) + 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=257, + ) recv_pkts = self.send_and_expect(self.tra_if, [pkt], self.tra_if) # replayed packets are dropped @@ -599,27 +679,29 @@ class IpsecTra4(object): # 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=200)) + 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=200, + ) 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, - crypt_algo=p.crypt_algo, - crypt_key=mk_scapy_crypt_key(p)[::-1], - auth_algo=p.auth_algo, - auth_key=p.auth_key[::-1]) - 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)) + bogus_sa = SecurityAssociation( + self.encryption_type, + p.vpp_tra_spi, + crypt_algo=p.crypt_algo, + crypt_key=mk_scapy_crypt_key(p)[::-1], + auth_algo=p.auth_algo, + auth_key=p.auth_key[::-1], + ) + 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, timeout=0.2) hash_failed_count += 17 @@ -627,28 +709,26 @@ class IpsecTra4(object): # a malformed 'runt' packet # created by a mis-constructed SA - if (ESP == self.encryption_type and p.crypt_algo != "NULL"): - 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)) + if ESP == self.encryption_type and p.crypt_algo != "NULL": + 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, timeout=0.2) undersize_count += 17 - self.assert_error_counter_equal(undersize_node_name, - undersize_count) + self.assert_error_counter_equal(undersize_node_name, undersize_count) # 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)) + 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) # @@ -656,12 +736,12 @@ class IpsecTra4(object): # this is Case B. So VPP will consider this to be a high seq num wrap # and so the decrypt attempt will fail # - 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)) + 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, timeout=0.2) if esn_en: @@ -675,12 +755,12 @@ class IpsecTra4(object): self.assertEqual(self.get_replay_counts(p), 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)) + 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]) @@ -694,13 +774,16 @@ class IpsecTra4(object): 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)] + 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) @@ -719,12 +802,12 @@ class IpsecTra4(object): # 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)) + 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]) @@ -733,13 +816,13 @@ class IpsecTra4(object): # 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)) + 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]) @@ -748,14 +831,15 @@ class IpsecTra4(object): # because 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, - timeout=0.2) + 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, timeout=0.2 + ) hash_failed_count += 1 self.assertEqual(self.get_hash_failed_counts(p), hash_failed_count) @@ -765,22 +849,22 @@ class IpsecTra4(object): # 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)) + 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)) + 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]) @@ -791,8 +875,7 @@ class IpsecTra4(object): # self.send_and_assert_no_replies(self.tra_if, pkts, timeout=0.2) seq_cycle_count += len(pkts) - self.assert_error_counter_equal(seq_cycle_node_name, - seq_cycle_count) + 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) @@ -811,88 +894,109 @@ class IpsecTra4(object): # for reasons i haven't investigated Scapy won't create a packet with # seq_num=0 # - 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(1, 3)] + 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(1, 3) + ] self.send_and_expect(self.tra_if, pkts, self.tra_if) self.assertEqual(p.tra_sa_out.get_lost(), 0) # skip a sequence number - 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(4, 6)] + 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(4, 6) + ] self.send_and_expect(self.tra_if, pkts, self.tra_if) self.assertEqual(p.tra_sa_out.get_lost(), 0) # the lost packet are counted untill we get up past the first # sizeof(replay_window) packets - 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(6, 100)] + 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(6, 100) + ] self.send_and_expect(self.tra_if, pkts, self.tra_if) self.assertEqual(p.tra_sa_out.get_lost(), 1) # lost of holes in the sequence - 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(100, 200, 2)] + 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(100, 200, 2) + ] self.send_and_expect(self.tra_if, pkts, self.tra_if, n_rx=50) - 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(200, 300)] + 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(200, 300) + ] self.send_and_expect(self.tra_if, pkts, self.tra_if) self.assertEqual(p.tra_sa_out.get_lost(), 51) # a big hole in the seq number space - 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(400, 500)] + 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(400, 500) + ] self.send_and_expect(self.tra_if, pkts, self.tra_if) self.assertEqual(p.tra_sa_out.get_lost(), 151) def verify_tra_basic4(self, count=1, payload_size=54): - """ ipsec v4 transport basic test """ + """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) + 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) @@ -906,14 +1010,14 @@ class IpsecTra4(object): 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)) + 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.assertEqual(p.tra_sa_out.get_lost(), 0) self.assertEqual(p.tra_sa_in.get_lost(), 0) @@ -922,41 +1026,45 @@ class IpsecTra4(object): class IpsecTra4Tests(IpsecTra4): - """ UT test methods for Transport v4 """ + """UT test methods for Transport v4""" + def test_tra_anti_replay(self): - """ ipsec v4 transport anti-replay test """ + """ipsec v4 transport anti-replay test""" self.verify_tra_anti_replay() def test_tra_lost(self): - """ ipsec v4 transport lost packet test """ + """ipsec v4 transport lost packet test""" self.verify_tra_lost() def test_tra_basic(self, count=1): - """ ipsec v4 transport basic test """ + """ipsec v4 transport basic test""" self.verify_tra_basic4(count=1) def test_tra_burst(self): - """ ipsec v4 transport burst test """ + """ipsec v4 transport burst test""" self.verify_tra_basic4(count=257) class IpsecTra6(object): - """ verify methods for Transport v6 """ + """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) + 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) + 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) @@ -967,32 +1075,38 @@ class IpsecTra6(object): 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)) + 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[0], 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_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)] + 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 = [] @@ -1018,10 +1132,13 @@ class IpsecTra6(object): # # 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) + 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) # @@ -1030,11 +1147,12 @@ class IpsecTra6(object): # # 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)) + 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) @@ -1047,12 +1165,13 @@ class IpsecTra6(object): 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)) + 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) @@ -1063,13 +1182,14 @@ class IpsecTra6(object): 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)) + 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) @@ -1082,47 +1202,54 @@ class IpsecTra6(object): class IpsecTra6Tests(IpsecTra6): - """ UT test methods for Transport v6 """ + """UT test methods for Transport v6""" + def test_tra_basic6(self): - """ ipsec v6 transport basic test """ + """ipsec v6 transport basic test""" self.verify_tra_basic6(count=1) def test_tra_burst6(self): - """ ipsec v6 transport burst test """ + """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 """ + """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""" + """UT test methods for Transport v6 and v4""" + pass class IpsecTun4(object): - """ verify methods for Tunnel v4 """ + """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, n_frags, - "incorrect SA out counts: expected %d != %d" % - (count, pkts)) + 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, + n_frags, + "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[0], count) @@ -1177,19 +1304,26 @@ class IpsecTun4(object): 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) + 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) + 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: @@ -1209,15 +1343,23 @@ class IpsecTun4(object): 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) + 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) + 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: @@ -1227,23 +1369,27 @@ class IpsecTun4(object): 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) + 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 = 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) + 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) + 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: @@ -1252,23 +1398,33 @@ class IpsecTun4(object): self.verify_counters4(p, 1, 1) self.vapi.ip_reassembly_enable_disable( - sw_if_index=self.tun_if.sw_if_index, enable_ip4=False) + 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) + 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(p, self.pg1, src=self.pg1.remote_ip6, - dst=p.remote_tun_if_host6, count=count) + send_pkts = self.gen_pkts6( + p, + 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: @@ -1281,8 +1437,7 @@ class IpsecTun4(object): except: self.logger.error(ppp("Unexpected packet:", recv_pkt)) try: - self.logger.debug( - ppp("Decrypted packet:", decrypt_pkt)) + self.logger.debug(ppp("Decrypted packet:", decrypt_pkt)) except: pass raise @@ -1295,37 +1450,43 @@ class IpsecTun4(object): def verify_keepalive(self, p): # the sizeof Raw is calculated to pad to the minimum ehternet # frame size of 64 btyes - 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') / - Padding(0 * 21)) - self.send_and_assert_no_replies(self.tun_if, pkt*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"\xff") + / Padding(0 * 21) + ) + 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) - - 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') / - Padding(0 * 21)) - self.send_and_assert_no_replies(self.tun_if, pkt*31) - self.assert_error_counter_equal( - '/err/%s/Too Short' % self.tun4_input_node, 62) + "/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) + + 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") + / Padding(0 * 21) + ) + self.send_and_assert_no_replies(self.tun_if, pkt * 31) + self.assert_error_counter_equal("/err/%s/Too Short" % self.tun4_input_node, 62) class IpsecTun4Tests(IpsecTun4): - """ UT test methods for Tunnel v4 """ + """UT test methods for Tunnel v4""" + def test_tun_basic44(self): - """ ipsec 4o4 tunnel basic test """ + """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() @@ -1333,27 +1494,30 @@ class IpsecTun4Tests(IpsecTun4): self.verify_tun_44(self.params[socket.AF_INET], count=1) def test_tun_reass_basic44(self): - """ ipsec 4o4 tunnel basic reassembly test """ + """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 """ + """ipsec 4o4 tunnel burst test""" self.verify_tun_44(self.params[socket.AF_INET], count=127) class IpsecTun6(object): - """ verify methods for Tunnel v6 """ + """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)) + 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[0], count) @@ -1366,8 +1530,7 @@ class IpsecTun6(object): 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) + self.assertEqual(len(rx) - len(Ether()) - len(IPv6()), rx[IPv6].plen) self.assert_equal(rx[IPv6].hlim, p.outer_hop_limit) if p.outer_flow_label: self.assert_equal(rx[IPv6].fl, p.outer_flow_label) @@ -1392,9 +1555,14 @@ class IpsecTun6(object): self.vapi.cli("clear errors") self.vapi.cli("clear ipsec sa") - send_pkts = self.gen_pkts6(p_in, self.pg1, src=self.pg1.remote_ip6, - dst=p_in.remote_tun_if_host, count=count, - payload_size=payload_size) + send_pkts = self.gen_pkts6( + p_in, + self.pg1, + src=self.pg1.remote_ip6, + dst=p_in.remote_tun_if_host, + count=count, + payload_size=payload_size, + ) self.send_and_assert_no_replies(self.tun_if, send_pkts) self.logger.info(self.vapi.cli("sh punt stats")) @@ -1402,18 +1570,19 @@ class IpsecTun6(object): 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) + 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) def verify_drop_tun_66(self, p_in, count=1, payload_size=64): - self.verify_drop_tun_tx_66(p_in, count=count, - payload_size=payload_size) - self.verify_drop_tun_rx_66(p_in, count=count, - payload_size=payload_size) + self.verify_drop_tun_tx_66(p_in, count=count, payload_size=payload_size) + self.verify_drop_tun_rx_66(p_in, count=count, payload_size=payload_size) def verify_tun_66(self, p_in, p_out=None, count=1, payload_size=64): self.vapi.cli("clear errors") @@ -1421,19 +1590,26 @@ class IpsecTun6(object): 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) + 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(p_in, self.pg1, src=self.pg1.remote_ip6, - dst=p_out.remote_tun_if_host, - count=count, - payload_size=payload_size) + send_pkts = self.gen_pkts6( + p_in, + 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) @@ -1449,50 +1625,65 @@ class IpsecTun6(object): 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) + 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 = 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) + 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(p, 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) + send_pkts = self.gen_pkts6( + p, + 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) + 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 """ + """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) + 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) + 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: @@ -1505,8 +1696,7 @@ class IpsecTun6(object): except: self.logger.debug(ppp("Unexpected packet:", recv_pkt)) try: - self.logger.debug(ppp("Decrypted packet:", - decrypt_pkt)) + self.logger.debug(ppp("Decrypted packet:", decrypt_pkt)) except: pass raise @@ -1517,27 +1707,28 @@ class IpsecTun6(object): class IpsecTun6Tests(IpsecTun6): - """ UT test methods for Tunnel v6 """ + """UT test methods for Tunnel v6""" def test_tun_basic66(self): - """ ipsec 6o6 tunnel basic test """ + """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 """ + """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 """ + """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 """ + """UT test methods for Tunnel v6 with multiple workers""" + vpp_worker_count = 2 def test_tun_handoff_66(self): - """ ipsec 6o6 tunnel worker hand-off test """ + """ipsec 6o6 tunnel worker hand-off test""" self.vapi.cli("clear errors") self.vapi.cli("clear ipsec sa") @@ -1547,31 +1738,42 @@ class IpsecTun6HandoffTests(IpsecTun6): # 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) + 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(p, 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) + send_pkts = self.gen_pkts6( + p, + 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) + self.verify_counters6(p, p, 4 * N_PKTS, worker=0) class IpsecTun4HandoffTests(IpsecTun4): - """ UT test methods for Tunnel v4 with multiple workers """ + """UT test methods for Tunnel v4 with multiple workers""" + vpp_worker_count = 2 def test_tun_handooff_44(self): - """ ipsec 4o4 tunnel worker hand-off test """ + """ipsec 4o4 tunnel worker hand-off test""" self.vapi.cli("clear errors") self.vapi.cli("clear ipsec sa") @@ -1581,32 +1783,43 @@ class IpsecTun4HandoffTests(IpsecTun4): # 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) + 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) + 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 + ) self.verify_encrypted(p, p.vpp_tun_sa, recv_pkts) # all counts against the first worker that was used - self.verify_counters4(p, 4*N_PKTS, worker=0) + self.verify_counters4(p, 4 * N_PKTS, worker=0) class IpsecTun46Tests(IpsecTun4Tests, IpsecTun6Tests): - """ UT test methods for Tunnel v6 & v4 """ + """UT test methods for Tunnel v6 & v4""" + pass class IPSecIPv4Fwd(VppTestCase): - """ Test IPSec by capturing and verifying IPv4 forwarded pkts """ + """Test IPSec by capturing and verifying IPv4 forwarded pkts""" + @classmethod def setUpConstants(cls): super(IPSecIPv4Fwd, cls).setUpConstants() @@ -1664,9 +1877,18 @@ class IPSecIPv4Fwd(VppTestCase): else: raise Exception("Invalid policy type: %s", policy_type) - def spd_add_rem_policy(self, spd_id, src_if, dst_if, - proto, is_out, priority, policy_type, - remove=False, all_ips=False): + def spd_add_rem_policy( + self, + spd_id, + src_if, + dst_if, + proto, + is_out, + priority, + policy_type, + remove=False, + all_ips=False, + ): spd = VppIpsecSpd(self, spd_id) if all_ips: @@ -1680,17 +1902,21 @@ class IPSecIPv4Fwd(VppTestCase): dst_range_low = dst_if.remote_ip4 dst_range_high = dst_if.remote_ip4 - spdEntry = VppIpsecSpdEntry(self, spd, 0, - src_range_low, - src_range_high, - dst_range_low, - dst_range_high, - proto, - priority=priority, - policy=self.get_policy(policy_type), - is_outbound=is_out) - - if(remove is False): + spdEntry = VppIpsecSpdEntry( + self, + spd, + 0, + src_range_low, + src_range_high, + dst_range_low, + dst_range_high, + proto, + priority=priority, + policy=self.get_policy(policy_type), + is_outbound=is_out, + ) + + if remove is False: spdEntry.add_vpp_config() self.spd_policies.append(spdEntry) else: @@ -1699,8 +1925,7 @@ class IPSecIPv4Fwd(VppTestCase): self.logger.info(self.vapi.ppcli("show ipsec all")) return spdEntry - def create_stream(self, src_if, dst_if, pkt_count, - src_prt=1234, dst_prt=5678): + def create_stream(self, src_if, dst_if, pkt_count, src_prt=1234, dst_prt=5678): packets = [] for i in range(pkt_count): # create packet info stored in the test case instance @@ -1708,10 +1933,12 @@ class IPSecIPv4Fwd(VppTestCase): # convert the info into packet payload payload = self.info_to_payload(info) # create the packet itself - p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) / - IP(src=src_if.remote_ip4, dst=dst_if.remote_ip4) / - UDP(sport=src_prt, dport=dst_prt) / - Raw(payload)) + p = ( + Ether(dst=src_if.local_mac, src=src_if.remote_mac) + / IP(src=src_if.remote_ip4, dst=dst_if.remote_ip4) + / UDP(sport=src_prt, dport=dst_prt) + / Raw(payload) + ) # store a copy of the packet in the packet info info.data = p.copy() # append the packet to the list @@ -1728,43 +1955,41 @@ class IPSecIPv4Fwd(VppTestCase): # convert the payload to packet info object payload_info = self.payload_to_info(packet) # make sure the indexes match - self.assert_equal(payload_info.src, src_if.sw_if_index, - "source sw_if_index") - self.assert_equal(payload_info.dst, dst_if.sw_if_index, - "destination sw_if_index") + self.assert_equal( + payload_info.src, src_if.sw_if_index, "source sw_if_index" + ) + self.assert_equal( + payload_info.dst, dst_if.sw_if_index, "destination sw_if_index" + ) packet_info = self.get_next_packet_info_for_interface2( - src_if.sw_if_index, - dst_if.sw_if_index, - packet_info) + src_if.sw_if_index, dst_if.sw_if_index, packet_info + ) # make sure we didn't run out of saved packets self.assertIsNotNone(packet_info) - self.assert_equal(payload_info.index, packet_info.index, - "packet info index") + self.assert_equal( + payload_info.index, packet_info.index, "packet info index" + ) saved_packet = packet_info.data # fetch the saved packet # assert the values match - self.assert_equal(ip.src, saved_packet[IP].src, - "IP source address") + self.assert_equal(ip.src, saved_packet[IP].src, "IP source address") # ... more assertions here - self.assert_equal(udp.sport, saved_packet[UDP].sport, - "UDP source port") + self.assert_equal(udp.sport, saved_packet[UDP].sport, "UDP source port") except Exception as e: - self.logger.error(ppp("Unexpected or invalid packet:", - packet)) + self.logger.error(ppp("Unexpected or invalid packet:", packet)) raise remaining_packet = self.get_next_packet_info_for_interface2( - src_if.sw_if_index, - dst_if.sw_if_index, - packet_info) - self.assertIsNone(remaining_packet, - "Interface %s: Packet expected from interface " - "%s didn't arrive" % (dst_if.name, src_if.name)) + src_if.sw_if_index, dst_if.sw_if_index, packet_info + ) + self.assertIsNone( + remaining_packet, + "Interface %s: Packet expected from interface " + "%s didn't arrive" % (dst_if.name, src_if.name), + ) def verify_policy_match(self, pkt_count, spdEntry): - self.logger.info( - "XXXX %s %s", str(spdEntry), str(spdEntry.get_stats())) - matched_pkts = spdEntry.get_stats().get('packets') - self.logger.info( - "Policy %s matched: %d pkts", str(spdEntry), matched_pkts) + self.logger.info("XXXX %s %s", str(spdEntry), str(spdEntry.get_stats())) + matched_pkts = spdEntry.get_stats().get("packets") + self.logger.info("Policy %s matched: %d pkts", str(spdEntry), matched_pkts) self.assert_equal(pkt_count, matched_pkts) @@ -1786,43 +2011,52 @@ class SpdFlowCacheTemplate(IPSecIPv4Fwd): super(SpdFlowCacheTemplate, self).tearDown() def get_spd_flow_cache_entries(self, outbound): - """ 'show ipsec spd' output: + """'show ipsec spd' output: ipv4-inbound-spd-flow-cache-entries: 0 ipv4-outbound-spd-flow-cache-entries: 0 """ show_ipsec_reply = self.vapi.cli("show ipsec spd") # match the relevant section of 'show ipsec spd' output - if(outbound): + if outbound: regex_match = re.search( - 'ipv4-outbound-spd-flow-cache-entries: (.*)', - show_ipsec_reply, re.DOTALL) + "ipv4-outbound-spd-flow-cache-entries: (.*)", + show_ipsec_reply, + re.DOTALL, + ) else: regex_match = re.search( - 'ipv4-inbound-spd-flow-cache-entries: (.*)', - show_ipsec_reply, re.DOTALL) + "ipv4-inbound-spd-flow-cache-entries: (.*)", show_ipsec_reply, re.DOTALL + ) if regex_match is None: - raise Exception("Unable to find spd flow cache entries \ - in \'show ipsec spd\' CLI output - regex failed to match") + raise Exception( + "Unable to find spd flow cache entries \ + in 'show ipsec spd' CLI output - regex failed to match" + ) else: try: num_entries = int(regex_match.group(1)) except ValueError: - raise Exception("Unable to get spd flow cache entries \ - from \'show ipsec spd\' string: %s", regex_match.group(0)) + raise Exception( + "Unable to get spd flow cache entries \ + from 'show ipsec spd' string: %s", + regex_match.group(0), + ) self.logger.info("%s", regex_match.group(0)) return num_entries def verify_num_outbound_flow_cache_entries(self, expected_elements): - self.assertEqual(self.get_spd_flow_cache_entries(outbound=True), - expected_elements) + self.assertEqual( + self.get_spd_flow_cache_entries(outbound=True), expected_elements + ) def verify_num_inbound_flow_cache_entries(self, expected_elements): - self.assertEqual(self.get_spd_flow_cache_entries(outbound=False), - expected_elements) + self.assertEqual( + self.get_spd_flow_cache_entries(outbound=False), expected_elements + ) def crc32_supported(self): # lscpu is part of util-linux package, available on all Linux Distros - stream = os.popen('lscpu') + stream = os.popen("lscpu") cpu_info = stream.read() # feature/flag "crc32" on Aarch64 and "sse4_2" on x86 # see vppinfra/crc32.h @@ -1833,5 +2067,6 @@ class SpdFlowCacheTemplate(IPSecIPv4Fwd): self.logger.info("\ncrc32 NOT supported:\n" + cpu_info) return False -if __name__ == '__main__': + +if __name__ == "__main__": unittest.main(testRunner=VppTestRunner) |