diff options
Diffstat (limited to 'test')
| -rw-r--r-- | test/test_trace_filter.py | 216 |
1 files changed, 199 insertions, 17 deletions
diff --git a/test/test_trace_filter.py b/test/test_trace_filter.py index 3c1f778a0f7..b716b794f96 100644 --- a/test/test_trace_filter.py +++ b/test/test_trace_filter.py @@ -1,32 +1,36 @@ #!/usr/bin/env python3 import unittest +import secrets +import socket from framework import VppTestCase, VppTestRunner -from vpp_ip_route import VppIpTable, VppIpRoute, VppRoutePath +from vpp_ipip_tun_interface import VppIpIpTunInterface +from vpp_papi import VppEnum +from vpp_ipsec import VppIpsecSA, VppIpsecSpd, VppIpsecSpdItfBinding, VppIpsecSpdEntry +from vpp_ip_route import VppIpRoute, VppRoutePath, FibPathProto from scapy.contrib.geneve import GENEVE from scapy.packet import Raw from scapy.layers.l2 import Ether -from scapy.layers.inet import IP, UDP +from scapy.layers.inet import IP, UDP, TCP from scapy.layers.vxlan import VXLAN +from scapy.layers.ipsec import ESP, SecurityAssociation from scapy.compat import raw from scapy.utils import rdpcap -class TestTracefilter(VppTestCase): - """Packet Tracer Filter Test""" - +class TemplateTraceFilter(VppTestCase): @classmethod def setUpClass(cls): - super(TestTracefilter, cls).setUpClass() + super().setUpClass() @classmethod def tearDownClass(cls): - super(TestTracefilter, cls).tearDownClass() + super().tearDownClass() def setUp(self): - super(TestTracefilter, self).setUp() + super().setUp() self.create_pg_interfaces(range(2)) self.pg0.generate_remote_hosts(11) for i in self.pg_interfaces: @@ -35,7 +39,7 @@ class TestTracefilter(VppTestCase): i.resolve_arp() def tearDown(self): - super(TestTracefilter, self).tearDown() + super().tearDown() for i in self.pg_interfaces: i.unconfig() i.admin_down() @@ -56,9 +60,12 @@ class TestTracefilter(VppTestCase): r = self.cli("show classify table verbose") self.assertTrue(r.reply.find("hits %i" % n) != -1) + def clear(self): + self.cli("clear trace") + def add_trace_filter(self, mask, match): self.cli("classify filter trace mask %s match %s" % (mask, match)) - self.cli("clear trace") + self.clear() self.cli("trace add pg-input 1000 filter") def del_trace_filters(self): @@ -73,6 +80,17 @@ class TestTracefilter(VppTestCase): s = "pcap rx/tx/drop: first table none" self.assertTrue(r.reply.find(s) != -1) + # install a classify rule, inject traffic and check for hits + def assert_classify(self, mask, match, packets, n=None): + self.add_trace_filter("hex %s" % mask, "hex %s" % match) + self.send_and_expect(self.pg0, packets, self.pg1, trace=False) + self.assert_hits(n if n is not None else len(packets)) + self.del_trace_filters() + + +class TestTracefilter(TemplateTraceFilter): + """Packet Tracer Filter Test""" + def test_basic(self): """Packet Tracer Filter Test""" self.add_trace_filter( @@ -111,13 +129,6 @@ class TestTracefilter(VppTestCase): self.del_trace_filters() - # install a classify rule, inject traffic and check for hits - def assert_classify(self, mask, match, packets, n=None): - self.add_trace_filter("hex %s" % mask, "hex %s" % match) - self.send_and_expect(self.pg0, packets, self.pg1, trace=False) - self.assert_hits(n if n is not None else len(packets)) - self.del_trace_filters() - def test_encap(self): """Packet Tracer Filter Test with encap""" @@ -281,5 +292,176 @@ class TestTracefilter(VppTestCase): self.assertEqual(len(pcap), 17) +class TestTraceFilterInner(TemplateTraceFilter): + """Packet Tracer Filter Inner Test""" + + extra_vpp_plugin_config = [ + "plugin tracenode_plugin.so {enable}", + ] + + def add_trace_filter(self, mask, match, tn_feature_intfc_index=None): + if tn_feature_intfc_index is not None: + self.logger.info("fffff") + self.vapi.tracenode_enable_disable(sw_if_index=tn_feature_intfc_index) + super().add_trace_filter(mask, match) + + def del_trace_filters(self, tn_feature_intfc_index=None): + if tn_feature_intfc_index is not None: + self.vapi.tracenode_enable_disable( + sw_if_index=tn_feature_intfc_index, enable=False + ) + super().del_trace_filters() + + def __add_sa(self, id_, tun_src, tun_dst): + # AES-CTR-128 / SHA2-256 + crypto_key_length = 16 + salt_length = 4 + integ_key_lenght = 16 + crypto_key = secrets.token_bytes(crypto_key_length) + salt = secrets.randbits(salt_length * 8) + integ_key = secrets.token_bytes(integ_key_lenght) + + flags = VppEnum.vl_api_ipsec_sad_flags_t.IPSEC_API_SAD_FLAG_UDP_ENCAP + + vpp_sa_in = VppIpsecSA( + test=self, + id=id_, + spi=id_, + integ_alg=VppEnum.vl_api_ipsec_integ_alg_t.IPSEC_API_INTEG_ALG_SHA_256_128, + integ_key=integ_key, + crypto_alg=VppEnum.vl_api_ipsec_crypto_alg_t.IPSEC_API_CRYPTO_ALG_AES_CTR_128, + crypto_key=crypto_key, + proto=VppEnum.vl_api_ipsec_proto_t.IPSEC_API_PROTO_ESP, + flags=flags, + salt=salt, + tun_src=tun_src, + tun_dst=tun_dst, + udp_src=4500, + udp_dst=4500, + ) + vpp_sa_in.add_vpp_config() + + scapy_sa_in = SecurityAssociation( + ESP, + spi=id_, + crypt_algo="AES-CTR", + crypt_key=crypto_key + salt.to_bytes(salt_length, "big"), + auth_algo="SHA2-256-128", + auth_key=integ_key, + tunnel_header=IP(src=tun_src, dst=tun_dst), + nat_t_header=UDP(sport=4500, dport=4500), + ) + + id_ += 1 + + vpp_sa_out = VppIpsecSA( + test=self, + id=id_, + spi=id_, + integ_alg=VppEnum.vl_api_ipsec_integ_alg_t.IPSEC_API_INTEG_ALG_SHA_256_128, + integ_key=integ_key, + crypto_alg=VppEnum.vl_api_ipsec_crypto_alg_t.IPSEC_API_CRYPTO_ALG_AES_CTR_128, + crypto_key=crypto_key, + proto=VppEnum.vl_api_ipsec_proto_t.IPSEC_API_PROTO_ESP, + flags=flags, + salt=salt, + tun_src=tun_dst, + tun_dst=tun_src, + udp_src=4500, + udp_dst=4500, + ) + vpp_sa_out.add_vpp_config() + + scapy_sa_out = SecurityAssociation( + ESP, + spi=id_, + crypt_algo="AES-CTR", + crypt_key=crypto_key + salt.to_bytes(salt_length, "big"), + auth_algo="SHA2-256-128", + auth_key=integ_key, + tunnel_header=IP(src=tun_dst, dst=tun_src), + nat_t_header=UDP(sport=4500, dport=4500), + ) + + return vpp_sa_in, scapy_sa_in, vpp_sa_out, scapy_sa_out + + def __gen_encrypt_pkt(self, scapy_sa, pkt): + return Ether( + src=self.pg0.local_mac, dst=self.pg0.remote_mac + ) / scapy_sa.encrypt(pkt) + + def test_encrypted_encap(self): + """Packet Tracer Filter Test with encrypted encap""" + + vpp_sa_in, scapy_sa_in, vpp_sa_out, _ = self.__add_sa( + 1, self.pg0.local_ip4, self.pg0.remote_ip4 + ) + + spd = VppIpsecSpd(self, 1) + spd.add_vpp_config() + + spd_binding = VppIpsecSpdItfBinding(self, spd, self.pg0) + spd_binding.add_vpp_config() + + spd_entry = VppIpsecSpdEntry( + self, + spd, + 1, + self.pg0.local_ip4, + self.pg0.local_ip4, + self.pg0.remote_ip4, + self.pg0.remote_ip4, + socket.IPPROTO_ESP, + policy=VppEnum.vl_api_ipsec_spd_action_t.IPSEC_API_SPD_ACTION_PROTECT, + is_outbound=0, + ).add_vpp_config() + + # the inner packet we are trying to match + inner_pkt = ( + IP(src=self.pg1.local_ip4, dst=self.pg1.remote_ip4) + / TCP(sport=1234, dport=4321) + / Raw(b"\xa5" * 100) + ) + pkt = self.__gen_encrypt_pkt(scapy_sa_in, inner_pkt) + + # self.add_trace_filter("l3 ip4 src", f"l3 ip4 src {self.pg0.local_ip4}") + + self.add_trace_filter( + "l2 none l3 ip4 src proto l4 dst_port", + f"l2 none l3 ip4 src {self.pg1.local_ip4} proto 6 l4 dst_port 4321", + tn_feature_intfc_index=self.pg0.sw_if_index, + ) + + self.logger.info("Sending packet with matching inner") + self.send_and_expect(self.pg0, pkt * 67, self.pg1, trace=False) + self.assert_hits(67) + self.clear() + + self.logger.info("Sending packet with wrong inner port") + inner_pkt[TCP].dport = 1111 + pkt = self.__gen_encrypt_pkt(scapy_sa_in, inner_pkt) + self.send_and_expect(self.pg0, pkt * 67, self.pg1, trace=False) + # the classify session should still have the 67 previous hits. + # In another way, the delta is 0 + self.assert_hits(67) + self.clear() + + self.logger.info("Sending packet with wrong source address") + inner_pkt[IP].src = "1.2.3.4" + inner_pkt[TCP].dport = 4321 + pkt = self.__gen_encrypt_pkt(scapy_sa_in, inner_pkt) + self.send_and_expect(self.pg0, pkt * 67, self.pg1, trace=False) + self.assert_hits(67) + self.clear() + + self.del_trace_filters(tn_feature_intfc_index=self.pg0.sw_if_index) + + spd_entry.remove_vpp_config() + spd_binding.remove_vpp_config() + spd.remove_vpp_config() + vpp_sa_in.remove_vpp_config() + vpp_sa_out.remove_vpp_config() + + if __name__ == "__main__": unittest.main(testRunner=VppTestRunner) |