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
+from scapy.packet import raw, Raw
from scapy.layers.inet6 import IPv6, ICMPv6EchoRequest, IPv6ExtHdrHopByHop, \
IPv6ExtHdrFragment, IPv6ExtHdrDestOpt
from vpp_papi import VppEnum
-class IPsecIPv4Params(object):
+class IPsecIPv4Params:
addr_type = socket.AF_INET
addr_any = "0.0.0.0"
self.remote_tun_if_host6 = '1111::1'
self.scapy_tun_sa_id = 100
- self.scapy_tun_spi = 1001
+ self.scapy_tun_spi = 1000
self.vpp_tun_sa_id = 200
- self.vpp_tun_spi = 1000
+ self.vpp_tun_spi = 2000
self.scapy_tra_sa_id = 300
- self.scapy_tra_spi = 2001
+ self.scapy_tra_spi = 3000
self.vpp_tra_sa_id = 400
- self.vpp_tra_spi = 2000
+ self.vpp_tra_spi = 4000
+
+ self.outer_hop_limit = 64
+ self.inner_hop_limit = 255
+ 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.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.dscp = 0
-class IPsecIPv6Params(object):
+class IPsecIPv6Params:
addr_type = socket.AF_INET6
addr_any = "0::0"
self.vpp_tra_sa_id = 800
self.vpp_tra_spi = 4000
+ self.outer_hop_limit = 64
+ self.inner_hop_limit = 255
+ 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.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.dscp = 0
def mk_scapy_crypt_key(p):
- if p.crypt_algo == "AES-GCM":
+ if p.crypt_algo in ("AES-GCM", "AES-CTR"):
return p.crypt_key + struct.pack("!I", p.salt)
else:
return p.crypt_key
super(TemplateIpsec, cls).tearDownClass()
def setup_params(self):
- self.ipv4_params = IPsecIPv4Params()
- self.ipv6_params = IPsecIPv6Params()
+ if not hasattr(self, 'ipv4_params'):
+ self.ipv4_params = IPsecIPv4Params()
+ 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}
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) /
+ 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)]
IP(src=src, dst=dst) / ICMP() / Raw(b'X' * payload_size)
for i in range(count)]
- def gen_pkts6(self, sw_intf, src, dst, count=1, payload_size=54):
+ 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) /
+ 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)]
"incorrect SA in counts: expected %d != %d" %
(count, pkts))
pkts = p.tun_sa_out.get_stats(worker)['packets']
- self.assertEqual(pkts, count,
+ self.assertEqual(pkts, n_frags,
"incorrect SA out counts: expected %d != %d" %
(count, pkts))
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:
self.assert_packet_checksums_valid(rx)
self.assertEqual(len(rx) - len(Ether()), rx[IP].len)
try:
- decrypt_pkt = p.vpp_tun_sa.decrypt(rx[IP])
+ 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)
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,
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,
+ 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:
self.assert_packet_checksums_valid(rx)
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)
try:
decrypt_pkt = p.vpp_tun_sa.decrypt(rx[IPv6])
if not decrypt_pkt.haslayer(IPv6):
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)
+ self.assert_equal(decrypt_pkt.hlim, p.inner_hop_limit - 1)
+ self.assert_equal(decrypt_pkt.fl, p.inner_flow_label)
except:
self.logger.debug(ppp("Unexpected packet:", rx))
try:
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,
+ 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)
self.pg1, n_rx=1)
self.verify_decrypted6(p, recv_pkts)
- send_pkts = self.gen_pkts6(self.pg1, src=self.pg1.remote_ip6,
+ send_pkts = self.gen_pkts6(p, self.pg1, src=self.pg1.remote_ip6,
dst=p.remote_tun_if_host,
count=1,
payload_size=64)
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,
self.pg1, worker=worker)
self.verify_decrypted6(p, recv_pkts)
- send_pkts = self.gen_pkts6(self.pg1, src=self.pg1.remote_ip6,
+ 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,