diff options
Diffstat (limited to 'test/test_ipip.py')
| -rw-r--r-- | test/test_ipip.py | 874 |
1 files changed, 522 insertions, 352 deletions
diff --git a/test/test_ipip.py b/test/test_ipip.py index 83395e0bd72..2817d5a17ba 100644 --- a/test/test_ipip.py +++ b/test/test_ipip.py @@ -5,14 +5,20 @@ import unittest from scapy.layers.inet6 import IPv6, Ether, IP, UDP, IPv6ExtHdrFragment, Raw from scapy.contrib.mpls import MPLS from scapy.all import fragment, fragment6, RandShort, defragment6 -from framework import VppTestCase, VppTestRunner -from vpp_ip import DpoProto -from vpp_ip_route import VppIpRoute, VppRoutePath, VppIpTable, FibPathProto, \ - VppMplsLabel, VppMplsRoute, VppMplsTable +from framework import VppTestCase +from asfframework import VppTestRunner +from vpp_ip_route import ( + VppIpRoute, + VppRoutePath, + VppIpTable, + FibPathProto, + VppMplsLabel, + VppMplsRoute, + VppMplsTable, +) from vpp_ipip_tun_interface import VppIpIpTunInterface from vpp_teib import VppTeib from vpp_papi import VppEnum -from socket import AF_INET, AF_INET6, inet_pton from util import reassemble4 """ Testipip is a subclass of VPPTestCase classes. @@ -22,27 +28,27 @@ IPIP tests. """ -def ipip_add_tunnel(test, src, dst, table_id=0, dscp=0x0, - flags=0): - """ Add a IPIP tunnel """ +def ipip_add_tunnel(test, src, dst, table_id=0, dscp=0x0, flags=0): + """Add a IPIP tunnel""" return test.vapi.ipip_add_tunnel( tunnel={ - 'src': src, - 'dst': dst, - 'table_id': table_id, - 'instance': 0xffffffff, - 'dscp': dscp, - 'flags': flags + "src": src, + "dst": dst, + "table_id": table_id, + "instance": 0xFFFFFFFF, + "dscp": dscp, + "flags": flags, } ) + # the number of packets to send when injecting traffic. # a multiple of 8 minus one, so we test all by 8/4/2/1 loops N_PACKETS = 64 - 1 class TestIPIP(VppTestCase): - """ IPIP Test Case """ + """IPIP Test Case""" @classmethod def setUpClass(cls): @@ -88,21 +94,24 @@ class TestIPIP(VppTestCase): p_ether = Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) p_payload = UDP(sport=1234, dport=1234) / self.payload(payload_length) p_ip4 = IP(src="1.2.3.4", dst=self.pg0.remote_ip4) - outer_ip4 = (p_ether / IP(src=self.pg1.remote_ip4, - id=RandShort(), - dst=self.pg0.local_ip4) / p_ip4 / p_payload) + outer_ip4 = ( + p_ether + / IP(src=self.pg1.remote_ip4, id=RandShort(), dst=self.pg0.local_ip4) + / p_ip4 + / p_payload + ) frags = fragment(outer_ip4, fragment_size) - p4_reply = (p_ip4 / p_payload) + p4_reply = p_ip4 / p_payload p4_reply.ttl -= 1 return frags, p4_reply def verify_ip4ip4_encaps(self, a, p_ip4s, p_ip4_encaps): for i, p_ip4 in enumerate(p_ip4s): p_ip4.dst = a - p4 = (self.p_ether / p_ip4 / self.p_payload) + p4 = self.p_ether / p_ip4 / self.p_payload p_ip4_inner = p_ip4 p_ip4_inner.ttl -= 1 - p4_reply = (p_ip4_encaps[i] / p_ip4_inner / self.p_payload) + p4_reply = p_ip4_encaps[i] / p_ip4_inner / self.p_payload p4_reply.ttl -= 1 p4_reply.id = 0 rx = self.send_and_expect(self.pg0, p4 * N_PACKETS, self.pg1) @@ -113,10 +122,10 @@ class TestIPIP(VppTestCase): def verify_ip6ip4_encaps(self, a, p_ip6s, p_ip4_encaps): for i, p_ip6 in enumerate(p_ip6s): p_ip6.dst = a - p6 = (self.p_ether / p_ip6 / self.p_payload) + p6 = self.p_ether / p_ip6 / self.p_payload p_inner_ip6 = p_ip6 p_inner_ip6.hlim -= 1 - p6_reply = (p_ip4_encaps[i] / p_inner_ip6 / self.p_payload) + p6_reply = p_ip4_encaps[i] / p_inner_ip6 / self.p_payload p6_reply.ttl -= 1 rx = self.send_and_expect(self.pg0, p6 * N_PACKETS, self.pg1) for p in rx: @@ -124,14 +133,14 @@ class TestIPIP(VppTestCase): self.assert_packet_checksums_valid(p) def test_ipip4(self): - """ ip{v4,v6} over ip4 test """ + """ip{v4,v6} over ip4 test""" self.pg1.generate_remote_hosts(5) self.pg1.configure_ipv4_neighbors() e = VppEnum.vl_api_tunnel_encap_decap_flags_t d = VppEnum.vl_api_ip_dscp_t self.p_ether = Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) - self.p_payload = UDP(sport=1234, dport=1234) / Raw(b'X' * 100) + self.p_payload = UDP(sport=1234, dport=1234) / Raw(b"X" * 100) # create a TOS byte by shifting a DSCP code point 2 bits. those 2 bits # are for the ECN. @@ -145,7 +154,8 @@ class TestIPIP(VppTestCase): self.pg0, self.pg0.local_ip4, self.pg1.remote_hosts[0].ip4, - flags=e.TUNNEL_API_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP) + flags=e.TUNNEL_API_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP, + ) tun_dscp.add_vpp_config() # IPv4 transport that copies the DCSP and ECN from the payload tun_dscp_ecn = VppIpIpTunInterface( @@ -153,8 +163,11 @@ class TestIPIP(VppTestCase): self.pg0, self.pg0.local_ip4, self.pg1.remote_hosts[1].ip4, - flags=(e.TUNNEL_API_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP | - e.TUNNEL_API_ENCAP_DECAP_FLAG_ENCAP_COPY_ECN)) + flags=( + e.TUNNEL_API_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP + | e.TUNNEL_API_ENCAP_DECAP_FLAG_ENCAP_COPY_ECN + ), + ) tun_dscp_ecn.add_vpp_config() # IPv4 transport that copies the ECN from the payload and sets the # DF bit on encap. copies the ECN on decap @@ -163,9 +176,12 @@ class TestIPIP(VppTestCase): self.pg0, self.pg0.local_ip4, self.pg1.remote_hosts[2].ip4, - flags=(e.TUNNEL_API_ENCAP_DECAP_FLAG_ENCAP_COPY_ECN | - e.TUNNEL_API_ENCAP_DECAP_FLAG_ENCAP_SET_DF | - e.TUNNEL_API_ENCAP_DECAP_FLAG_DECAP_COPY_ECN)) + flags=( + e.TUNNEL_API_ENCAP_DECAP_FLAG_ENCAP_COPY_ECN + | e.TUNNEL_API_ENCAP_DECAP_FLAG_ENCAP_SET_DF + | e.TUNNEL_API_ENCAP_DECAP_FLAG_DECAP_COPY_ECN + ), + ) tun_ecn.add_vpp_config() # IPv4 transport that sets a fixed DSCP in the encap and copies # the DF bit @@ -175,7 +191,8 @@ class TestIPIP(VppTestCase): self.pg0.local_ip4, self.pg1.remote_hosts[3].ip4, dscp=d.IP_API_DSCP_AF11, - flags=e.TUNNEL_API_ENCAP_DECAP_FLAG_ENCAP_COPY_DF) + flags=e.TUNNEL_API_ENCAP_DECAP_FLAG_ENCAP_COPY_DF, + ) tun.add_vpp_config() # array of all the tunnels @@ -186,22 +203,26 @@ class TestIPIP(VppTestCase): a6s = ["" for i in range(len(tuns))] # IP headers with each combination of DSCp/ECN tested - p_ip6s = [IPv6(src="1::1", dst="DEAD::1", nh='UDP', tc=dscp), - IPv6(src="1::1", dst="DEAD::1", nh='UDP', tc=dscp_ecn), - IPv6(src="1::1", dst="DEAD::1", nh='UDP', tc=ecn), - IPv6(src="1::1", dst="DEAD::1", nh='UDP', tc=0xff)] - p_ip4s = [IP(src="1.2.3.4", dst="130.67.0.1", tos=dscp, flags='DF'), - IP(src="1.2.3.4", dst="130.67.0.1", tos=dscp_ecn), - IP(src="1.2.3.4", dst="130.67.0.1", tos=ecn), - IP(src="1.2.3.4", dst="130.67.0.1", tos=0xff)] + p_ip6s = [ + IPv6(src="1::1", dst="DEAD::1", nh="UDP", tc=dscp), + IPv6(src="1::1", dst="DEAD::1", nh="UDP", tc=dscp_ecn), + IPv6(src="1::1", dst="DEAD::1", nh="UDP", tc=ecn), + IPv6(src="1::1", dst="DEAD::1", nh="UDP", tc=0xFF), + ] + p_ip4s = [ + IP(src="1.2.3.4", dst="130.67.0.1", tos=dscp, flags="DF"), + IP(src="1.2.3.4", dst="130.67.0.1", tos=dscp_ecn), + IP(src="1.2.3.4", dst="130.67.0.1", tos=ecn), + IP(src="1.2.3.4", dst="130.67.0.1", tos=0xFF), + ] # Configure each tunnel for i, t in enumerate(tuns): # Set interface up and enable IP on it self.vapi.sw_interface_set_flags(t.sw_if_index, 1) self.vapi.sw_interface_set_unnumbered( - sw_if_index=self.pg0.sw_if_index, - unnumbered_sw_if_index=t.sw_if_index) + sw_if_index=self.pg0.sw_if_index, unnumbered_sw_if_index=t.sw_if_index + ) # prefix for route / destination address for packets a4s[i] = "130.67.%d.0" % i @@ -209,17 +230,29 @@ class TestIPIP(VppTestCase): # Add IPv4 and IPv6 routes via tunnel interface ip4_via_tunnel = VppIpRoute( - self, a4s[i], 24, - [VppRoutePath("0.0.0.0", - t.sw_if_index, - proto=FibPathProto.FIB_PATH_NH_PROTO_IP4)]) + self, + a4s[i], + 24, + [ + VppRoutePath( + "0.0.0.0", + t.sw_if_index, + proto=FibPathProto.FIB_PATH_NH_PROTO_IP4, + ) + ], + ) ip4_via_tunnel.add_vpp_config() ip6_via_tunnel = VppIpRoute( - self, a6s[i], 64, - [VppRoutePath("::", - t.sw_if_index, - proto=FibPathProto.FIB_PATH_NH_PROTO_IP6)]) + self, + a6s[i], + 64, + [ + VppRoutePath( + "::", t.sw_if_index, proto=FibPathProto.FIB_PATH_NH_PROTO_IP6 + ) + ], + ) ip6_via_tunnel.add_vpp_config() # @@ -229,13 +262,14 @@ class TestIPIP(VppTestCase): # tun_dscp copies only the dscp # expected TC values are thus only the DCSP value is present from the # inner - exp_tcs = [dscp, dscp, 0, 0xfc] - p_ip44_encaps = [IP(src=self.pg0.local_ip4, - dst=tun_dscp.dst, - tos=tc) for tc in exp_tcs] - p_ip64_encaps = [IP(src=self.pg0.local_ip4, - dst=tun_dscp.dst, - proto='ipv6', id=0, tos=tc) for tc in exp_tcs] + exp_tcs = [dscp, dscp, 0, 0xFC] + p_ip44_encaps = [ + IP(src=self.pg0.local_ip4, dst=tun_dscp.dst, tos=tc) for tc in exp_tcs + ] + p_ip64_encaps = [ + IP(src=self.pg0.local_ip4, dst=tun_dscp.dst, proto="ipv6", id=0, tos=tc) + for tc in exp_tcs + ] # IPv4 in to IPv4 tunnel self.verify_ip4ip4_encaps(a4s[0], p_ip4s, p_ip44_encaps) @@ -243,41 +277,50 @@ class TestIPIP(VppTestCase): self.verify_ip6ip4_encaps(a6s[0], p_ip6s, p_ip64_encaps) # tun_dscp_ecn copies the dscp and the ecn - exp_tcs = [dscp, dscp_ecn, ecn, 0xff] - p_ip44_encaps = [IP(src=self.pg0.local_ip4, - dst=tun_dscp_ecn.dst, - tos=tc) for tc in exp_tcs] - p_ip64_encaps = [IP(src=self.pg0.local_ip4, - dst=tun_dscp_ecn.dst, - proto='ipv6', id=0, tos=tc) for tc in exp_tcs] + exp_tcs = [dscp, dscp_ecn, ecn, 0xFF] + p_ip44_encaps = [ + IP(src=self.pg0.local_ip4, dst=tun_dscp_ecn.dst, tos=tc) for tc in exp_tcs + ] + p_ip64_encaps = [ + IP(src=self.pg0.local_ip4, dst=tun_dscp_ecn.dst, proto="ipv6", id=0, tos=tc) + for tc in exp_tcs + ] self.verify_ip4ip4_encaps(a4s[1], p_ip4s, p_ip44_encaps) self.verify_ip6ip4_encaps(a6s[1], p_ip6s, p_ip64_encaps) # tun_ecn copies only the ecn and always sets DF exp_tcs = [0, ecn, ecn, ecn] - p_ip44_encaps = [IP(src=self.pg0.local_ip4, - dst=tun_ecn.dst, - flags='DF', tos=tc) for tc in exp_tcs] - p_ip64_encaps = [IP(src=self.pg0.local_ip4, - dst=tun_ecn.dst, - flags='DF', proto='ipv6', id=0, tos=tc) - for tc in exp_tcs] + p_ip44_encaps = [ + IP(src=self.pg0.local_ip4, dst=tun_ecn.dst, flags="DF", tos=tc) + for tc in exp_tcs + ] + p_ip64_encaps = [ + IP( + src=self.pg0.local_ip4, + dst=tun_ecn.dst, + flags="DF", + proto="ipv6", + id=0, + tos=tc, + ) + for tc in exp_tcs + ] self.verify_ip4ip4_encaps(a4s[2], p_ip4s, p_ip44_encaps) self.verify_ip6ip4_encaps(a6s[2], p_ip6s, p_ip64_encaps) # tun sets a fixed dscp and copies DF fixed_dscp = tun.dscp << 2 - flags = ['DF', 0, 0, 0] - p_ip44_encaps = [IP(src=self.pg0.local_ip4, - dst=tun.dst, - flags=f, - tos=fixed_dscp) for f in flags] - p_ip64_encaps = [IP(src=self.pg0.local_ip4, - dst=tun.dst, - proto='ipv6', id=0, - tos=fixed_dscp) for i in range(len(p_ip4s))] + flags = ["DF", 0, 0, 0] + p_ip44_encaps = [ + IP(src=self.pg0.local_ip4, dst=tun.dst, flags=f, tos=fixed_dscp) + for f in flags + ] + p_ip64_encaps = [ + IP(src=self.pg0.local_ip4, dst=tun.dst, proto="ipv6", id=0, tos=fixed_dscp) + for i in range(len(p_ip4s)) + ] self.verify_ip4ip4_encaps(a4s[3], p_ip4s, p_ip44_encaps) self.verify_ip6ip4_encaps(a6s[3], p_ip6s, p_ip64_encaps) @@ -293,15 +336,13 @@ class TestIPIP(VppTestCase): # one overlay packet and all combinations of its encap p_ip4 = IP(src="1.2.3.4", dst=self.pg0.remote_ip4) - p_ip4_encaps = [IP(src=tun.dst, - dst=self.pg0.local_ip4, - tos=tc) for tc in tcs] + p_ip4_encaps = [IP(src=tun.dst, dst=self.pg0.local_ip4, tos=tc) for tc in tcs] # for each encap tun will produce the same inner packet because it does # not copy up fields from the payload for p_ip4_encap in p_ip4_encaps: - p4 = (self.p_ether / p_ip4_encap / p_ip4 / self.p_payload) - p4_reply = (p_ip4 / self.p_payload) + p4 = self.p_ether / p_ip4_encap / p_ip4 / self.p_payload + p4_reply = p_ip4 / self.p_payload p4_reply.ttl -= 1 rx = self.send_and_expect(self.pg1, p4 * N_PACKETS, self.pg0) n_packets_decapped += N_PACKETS @@ -309,20 +350,19 @@ class TestIPIP(VppTestCase): self.validate(p[1], p4_reply) self.assert_packet_checksums_valid(p) - err = self.statistics.get_err_counter( - '/err/ipip4-input/packets decapsulated') + err = self.statistics.get_err_counter("/err/ipip4-input/packets decapsulated") self.assertEqual(err, n_packets_decapped) # tun_ecn copies the ECN bits from the encap to the inner - p_ip4_encaps = [IP(src=tun_ecn.dst, - dst=self.pg0.local_ip4, - tos=tc) for tc in tcs] + p_ip4_encaps = [ + IP(src=tun_ecn.dst, dst=self.pg0.local_ip4, tos=tc) for tc in tcs + ] p_ip4_replys = [p_ip4.copy() for i in range(len(p_ip4_encaps))] p_ip4_replys[2].tos = ecn p_ip4_replys[3].tos = ecn for i, p_ip4_encap in enumerate(p_ip4_encaps): - p4 = (self.p_ether / p_ip4_encap / p_ip4 / self.p_payload) - p4_reply = (p_ip4_replys[i] / self.p_payload) + p4 = self.p_ether / p_ip4_encap / p_ip4 / self.p_payload + p4_reply = p_ip4_replys[i] / self.p_payload p4_reply.ttl -= 1 rx = self.send_and_expect(self.pg1, p4 * N_PACKETS, self.pg0) n_packets_decapped += N_PACKETS @@ -330,22 +370,17 @@ class TestIPIP(VppTestCase): self.validate(p[1], p4_reply) self.assert_packet_checksums_valid(p) - err = self.statistics.get_err_counter( - '/err/ipip4-input/packets decapsulated') + err = self.statistics.get_err_counter("/err/ipip4-input/packets decapsulated") self.assertEqual(err, n_packets_decapped) # IPv4 tunnel to IPv6 # for each encap tun will produce the same inner packet because it does # not copy up fields from the payload - p_ip4_encaps = [IP(src=tun.dst, - dst=self.pg0.local_ip4, - tos=tc) for tc in tcs] + p_ip4_encaps = [IP(src=tun.dst, dst=self.pg0.local_ip4, tos=tc) for tc in tcs] p_ip6 = IPv6(src="1:2:3::4", dst=self.pg0.remote_ip6) for p_ip4_encap in p_ip4_encaps: - p6 = (self.p_ether / - p_ip4_encap / p_ip6 / - self.p_payload) - p6_reply = (p_ip6 / self.p_payload) + p6 = self.p_ether / p_ip4_encap / p_ip6 / self.p_payload + p6_reply = p_ip6 / self.p_payload p6_reply.hlim = 63 rx = self.send_and_expect(self.pg1, p6 * N_PACKETS, self.pg0) n_packets_decapped += N_PACKETS @@ -353,22 +388,21 @@ class TestIPIP(VppTestCase): self.validate(p[1], p6_reply) self.assert_packet_checksums_valid(p) - err = self.statistics.get_err_counter( - '/err/ipip4-input/packets decapsulated') + err = self.statistics.get_err_counter("/err/ipip4-input/packets decapsulated") self.assertEqual(err, n_packets_decapped) # IPv4 tunnel to IPv6 # tun_ecn copies the ECN bits from the encap to the inner - p_ip4_encaps = [IP(src=tun_ecn.dst, - dst=self.pg0.local_ip4, - tos=tc) for tc in tcs] + p_ip4_encaps = [ + IP(src=tun_ecn.dst, dst=self.pg0.local_ip4, tos=tc) for tc in tcs + ] p_ip6 = IPv6(src="1:2:3::4", dst=self.pg0.remote_ip6) p_ip6_replys = [p_ip6.copy() for i in range(len(p_ip4_encaps))] p_ip6_replys[2].tc = ecn p_ip6_replys[3].tc = ecn for i, p_ip4_encap in enumerate(p_ip4_encaps): - p6 = (self.p_ether / p_ip4_encap / p_ip6 / self.p_payload) - p6_reply = (p_ip6_replys[i] / self.p_payload) + p6 = self.p_ether / p_ip4_encap / p_ip6 / self.p_payload + p6_reply = p_ip6_replys[i] / self.p_payload p6_reply.hlim = 63 rx = self.send_and_expect(self.pg1, p6 * N_PACKETS, self.pg0) n_packets_decapped += N_PACKETS @@ -376,21 +410,23 @@ class TestIPIP(VppTestCase): self.validate(p[1], p6_reply) self.assert_packet_checksums_valid(p) - err = self.statistics.get_err_counter( - '/err/ipip4-input/packets decapsulated') + err = self.statistics.get_err_counter("/err/ipip4-input/packets decapsulated") self.assertEqual(err, n_packets_decapped) # # Fragmentation / Reassembly and Re-fragmentation # rv = self.vapi.ip_reassembly_enable_disable( - sw_if_index=self.pg1.sw_if_index, - enable_ip4=1) + sw_if_index=self.pg1.sw_if_index, enable_ip4=1 + ) - self.vapi.ip_reassembly_set(timeout_ms=1000, max_reassemblies=1000, - max_reassembly_length=1000, - expire_walk_interval_ms=10000, - is_ip6=0) + self.vapi.ip_reassembly_set( + timeout_ms=1000, + max_reassemblies=1000, + max_reassembly_length=1000, + expire_walk_interval_ms=10000, + is_ip6=0, + ) # Send lots of fragments, verify reassembled packet frags, p4_reply = self.generate_ip4_frags(3131, 1400) @@ -406,8 +442,7 @@ class TestIPIP(VppTestCase): for p in rx: self.validate(p[1], p4_reply) - err = self.statistics.get_err_counter( - '/err/ipip4-input/packets decapsulated') + err = self.statistics.get_err_counter("/err/ipip4-input/packets decapsulated") self.assertEqual(err, n_packets_decapped) f = [] @@ -453,9 +488,12 @@ class TestIPIP(VppTestCase): # send large packets through the tunnel, expect them to be fragmented self.vapi.sw_interface_set_mtu(tun_dscp.sw_if_index, [600, 0, 0, 0]) - p4 = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / - IP(src="1.2.3.4", dst="130.67.0.1", tos=42) / - UDP(sport=1234, dport=1234) / Raw(b'Q' * 1000)) + p4 = ( + Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) + / IP(src="1.2.3.4", dst="130.67.0.1", tos=42) + / UDP(sport=1234, dport=1234) + / Raw(b"Q" * 1000) + ) rx = self.send_and_expect(self.pg0, p4 * 15, self.pg1, 30) inners = [] for p in rx: @@ -466,25 +504,25 @@ class TestIPIP(VppTestCase): self.assertEqual(p[IP].ttl, 63) def test_ipip_create(self): - """ ipip create / delete interface test """ - rv = ipip_add_tunnel(self, '1.2.3.4', '2.3.4.5') + """ipip create / delete interface test""" + rv = ipip_add_tunnel(self, "1.2.3.4", "2.3.4.5") sw_if_index = rv.sw_if_index self.vapi.ipip_del_tunnel(sw_if_index) def test_ipip_vrf_create(self): - """ ipip create / delete interface VRF test """ + """ipip create / delete interface VRF test""" t = VppIpTable(self, 20) t.add_vpp_config() - rv = ipip_add_tunnel(self, '1.2.3.4', '2.3.4.5', table_id=20) + rv = ipip_add_tunnel(self, "1.2.3.4", "2.3.4.5", table_id=20) sw_if_index = rv.sw_if_index self.vapi.ipip_del_tunnel(sw_if_index) def payload(self, len): - return 'x' * len + return "x" * len def test_mipip4(self): - """ p2mp IPv4 tunnel Tests """ + """p2mp IPv4 tunnel Tests""" for itf in self.pg_interfaces[:2]: # @@ -499,11 +537,13 @@ class TestIPIP(VppTestCase): # - assign an IP Addres # - Add a route via the tunnel # - ipip_if = VppIpIpTunInterface(self, itf, - itf.local_ip4, - "0.0.0.0", - mode=(VppEnum.vl_api_tunnel_mode_t. - TUNNEL_API_MODE_MP)) + ipip_if = VppIpIpTunInterface( + self, + itf, + itf.local_ip4, + "0.0.0.0", + mode=(VppEnum.vl_api_tunnel_mode_t.TUNNEL_API_MODE_MP), + ) ipip_if.add_vpp_config() ipip_if.admin_up() ipip_if.config_ip4() @@ -533,31 +573,40 @@ class TestIPIP(VppTestCase): # route traffic via the peer # route_via_tun = VppIpRoute( - self, route_addr, 32, - [VppRoutePath(ipip_if._remote_hosts[ii].ip4, - ipip_if.sw_if_index)]) + self, + route_addr, + 32, + [VppRoutePath(ipip_if._remote_hosts[ii].ip4, ipip_if.sw_if_index)], + ) route_via_tun.add_vpp_config() # # Add a TEIB entry resolves the peer # - teib = VppTeib(self, ipip_if, - ipip_if._remote_hosts[ii].ip4, - itf._remote_hosts[ii].ip4) + teib = VppTeib( + self, + ipip_if, + ipip_if._remote_hosts[ii].ip4, + itf._remote_hosts[ii].ip4, + ) teib.add_vpp_config() - self.logger.info(self.vapi.cli("sh adj nbr ipip0 %s" % - ipip_if._remote_hosts[ii].ip4)) + self.logger.info( + self.vapi.cli("sh adj nbr ipip0 %s" % ipip_if._remote_hosts[ii].ip4) + ) # # Send a packet stream that is routed into the tunnel # - packets are IPIP encapped # - inner = (IP(dst=route_addr, src="5.5.5.5") / - UDP(sport=1234, dport=1234) / - Raw(b'0x44' * 100)) - tx_e = [(Ether(dst=self.pg0.local_mac, - src=self.pg0.remote_mac) / - inner) for x in range(63)] + inner = ( + IP(dst=route_addr, src="5.5.5.5") + / UDP(sport=1234, dport=1234) + / Raw(b"0x44" * 100) + ) + tx_e = [ + (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / inner) + for x in range(63) + ] rxs = self.send_and_expect(self.pg0, tx_e, itf) @@ -565,13 +614,16 @@ class TestIPIP(VppTestCase): self.assertEqual(rx[IP].src, itf.local_ip4) self.assertEqual(rx[IP].dst, itf._remote_hosts[ii].ip4) - tx_i = [(Ether(dst=self.pg0.local_mac, - src=self.pg0.remote_mac) / - IP(src=itf._remote_hosts[ii].ip4, - dst=itf.local_ip4) / - IP(src=self.pg0.local_ip4, dst=self.pg0.remote_ip4) / - UDP(sport=1234, dport=1234) / - Raw(b'0x44' * 100)) for x in range(63)] + tx_i = [ + ( + Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) + / IP(src=itf._remote_hosts[ii].ip4, dst=itf.local_ip4) + / IP(src=self.pg0.local_ip4, dst=self.pg0.remote_ip4) + / UDP(sport=1234, dport=1234) + / Raw(b"0x44" * 100) + ) + for x in range(63) + ] self.logger.info(self.vapi.cli("sh ipip tunnel-hash")) rx = self.send_and_expect(self.pg0, tx_i, self.pg0) @@ -593,12 +645,15 @@ class TestIPIP(VppTestCase): # # we can also send to the peer's address # - inner = (IP(dst=teib.peer, src="5.5.5.5") / - UDP(sport=1234, dport=1234) / - Raw(b'0x44' * 100)) - tx_e = [(Ether(dst=self.pg0.local_mac, - src=self.pg0.remote_mac) / - inner) for x in range(63)] + inner = ( + IP(dst=teib.peer, src="5.5.5.5") + / UDP(sport=1234, dport=1234) + / Raw(b"0x44" * 100) + ) + tx_e = [ + (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / inner) + for x in range(63) + ] rxs = self.send_and_expect(self.pg0, tx_e, itf) @@ -616,12 +671,15 @@ class TestIPIP(VppTestCase): # # we should still be able to reach the peers from the new table # - inner = (IP(dst=teib.peer, src="5.5.5.5") / - UDP(sport=1234, dport=1234) / - Raw(b'0x44' * 100)) - tx_e = [(Ether(dst=self.pg0.local_mac, - src=self.pg0.remote_mac) / - inner) for x in range(63)] + inner = ( + IP(dst=teib.peer, src="5.5.5.5") + / UDP(sport=1234, dport=1234) + / Raw(b"0x44" * 100) + ) + tx_e = [ + (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / inner) + for x in range(63) + ] rxs = self.send_and_expect(self.pg2, tx_e, itf) @@ -631,7 +689,7 @@ class TestIPIP(VppTestCase): class TestIPIP6(VppTestCase): - """ IPIP6 Test Case """ + """IPIP6 Test Case""" @classmethod def setUpClass(cls): @@ -665,30 +723,34 @@ class TestIPIP6(VppTestCase): def setup_tunnel(self): # IPv6 transport - rv = ipip_add_tunnel(self, - self.pg0.local_ip6, - self.pg1.remote_ip6) + rv = ipip_add_tunnel(self, self.pg0.local_ip6, self.pg1.remote_ip6) sw_if_index = rv.sw_if_index self.tunnel_if_index = sw_if_index self.vapi.sw_interface_set_flags(sw_if_index, 1) self.vapi.sw_interface_set_unnumbered( - sw_if_index=self.pg0.sw_if_index, - unnumbered_sw_if_index=sw_if_index) + sw_if_index=self.pg0.sw_if_index, unnumbered_sw_if_index=sw_if_index + ) # Add IPv4 and IPv6 routes via tunnel interface ip4_via_tunnel = VppIpRoute( - self, "130.67.0.0", 16, - [VppRoutePath("0.0.0.0", - sw_if_index, - proto=FibPathProto.FIB_PATH_NH_PROTO_IP4)]) + self, + "130.67.0.0", + 16, + [ + VppRoutePath( + "0.0.0.0", sw_if_index, proto=FibPathProto.FIB_PATH_NH_PROTO_IP4 + ) + ], + ) ip4_via_tunnel.add_vpp_config() ip6_via_tunnel = VppIpRoute( - self, "dead::", 16, - [VppRoutePath("::", - sw_if_index, - proto=FibPathProto.FIB_PATH_NH_PROTO_IP6)]) + self, + "dead::", + 16, + [VppRoutePath("::", sw_if_index, proto=FibPathProto.FIB_PATH_NH_PROTO_IP6)], + ) ip6_via_tunnel.add_vpp_config() self.tunnel_ip6_via_tunnel = ip6_via_tunnel @@ -708,11 +770,15 @@ class TestIPIP6(VppTestCase): p_ether = Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) p_payload = UDP(sport=1234, dport=1234) / self.payload(payload_length) p_ip6 = IPv6(src="1::1", dst=self.pg0.remote_ip6) - outer_ip6 = (p_ether / IPv6(src=self.pg1.remote_ip6, - dst=self.pg0.local_ip6) / - IPv6ExtHdrFragment() / p_ip6 / p_payload) + outer_ip6 = ( + p_ether + / IPv6(src=self.pg1.remote_ip6, dst=self.pg0.local_ip6) + / IPv6ExtHdrFragment() + / p_ip6 + / p_payload + ) frags = fragment6(outer_ip6, fragment_size) - p6_reply = (p_ip6 / p_payload) + p6_reply = p_ip6 / p_payload p6_reply.hlim -= 1 return frags, p6_reply @@ -720,58 +786,73 @@ class TestIPIP6(VppTestCase): p_ether = Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) p_payload = UDP(sport=1234, dport=1234) / self.payload(payload_length) p_ip6 = IPv6(src="1::1", dst="dead::1") - outer_ip6 = (p_ether / IPv6(src=self.pg1.remote_ip6, - dst=self.pg0.local_ip6) / - IPv6ExtHdrFragment() / p_ip6 / p_payload) + outer_ip6 = ( + p_ether + / IPv6(src=self.pg1.remote_ip6, dst=self.pg0.local_ip6) + / IPv6ExtHdrFragment() + / p_ip6 + / p_payload + ) frags = fragment6(outer_ip6, fragment_size) p_ip6.hlim -= 1 - p6_reply = (IPv6(src=self.pg0.local_ip6, dst=self.pg1.remote_ip6, - hlim=63) / p_ip6 / p_payload) + p6_reply = ( + IPv6(src=self.pg0.local_ip6, dst=self.pg1.remote_ip6, hlim=63) + / p_ip6 + / p_payload + ) return frags, p6_reply def test_encap(self): - """ ip{v4,v6} over ip6 test encap """ + """ip{v4,v6} over ip6 test encap""" p_ether = Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) - p_ip6 = IPv6(src="1::1", dst="DEAD::1", tc=42, nh='UDP') + p_ip6 = IPv6(src="1::1", dst="DEAD::1", tc=42, nh="UDP") p_ip4 = IP(src="1.2.3.4", dst="130.67.0.1", tos=42) p_payload = UDP(sport=1234, dport=1234) # Encapsulation # IPv6 in to IPv6 tunnel - p6 = (p_ether / p_ip6 / p_payload) - p6_reply = (IPv6(src=self.pg0.local_ip6, dst=self.pg1.remote_ip6, - hlim=64) / - p_ip6 / p_payload) + p6 = p_ether / p_ip6 / p_payload + p6_reply = ( + IPv6(src=self.pg0.local_ip6, dst=self.pg1.remote_ip6, hlim=64) + / p_ip6 + / p_payload + ) p6_reply[1].hlim -= 1 rx = self.send_and_expect(self.pg0, p6 * 11, self.pg1) for p in rx: self.validate(p[1], p6_reply) # IPv4 in to IPv6 tunnel - p4 = (p_ether / p_ip4 / p_payload) - p4_reply = (IPv6(src=self.pg0.local_ip6, - dst=self.pg1.remote_ip6, hlim=64) / - p_ip4 / p_payload) + p4 = p_ether / p_ip4 / p_payload + p4_reply = ( + IPv6(src=self.pg0.local_ip6, dst=self.pg1.remote_ip6, hlim=64) + / p_ip4 + / p_payload + ) p4_reply[1].ttl -= 1 rx = self.send_and_expect(self.pg0, p4 * 11, self.pg1) for p in rx: self.validate(p[1], p4_reply) def test_decap(self): - """ ip{v4,v6} over ip6 test decap """ + """ip{v4,v6} over ip6 test decap""" p_ether = Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) - p_ip6 = IPv6(src="1::1", dst="DEAD::1", tc=42, nh='UDP') + p_ip6 = IPv6(src="1::1", dst="DEAD::1", tc=42, nh="UDP") p_ip4 = IP(src="1.2.3.4", dst=self.pg0.remote_ip4) p_payload = UDP(sport=1234, dport=1234) # Decapsulation # IPv6 tunnel to IPv4 - p4 = (p_ether / IPv6(src=self.pg1.remote_ip6, - dst=self.pg0.local_ip6) / p_ip4 / p_payload) - p4_reply = (p_ip4 / p_payload) + p4 = ( + p_ether + / IPv6(src=self.pg1.remote_ip6, dst=self.pg0.local_ip6) + / p_ip4 + / p_payload + ) + p4_reply = p_ip4 / p_payload p4_reply.ttl -= 1 rx = self.send_and_expect(self.pg1, p4 * 11, self.pg0) for p in rx: @@ -779,9 +860,13 @@ class TestIPIP6(VppTestCase): # IPv6 tunnel to IPv6 p_ip6 = IPv6(src="1:2:3::4", dst=self.pg0.remote_ip6) - p6 = (p_ether / IPv6(src=self.pg1.remote_ip6, - dst=self.pg0.local_ip6) / p_ip6 / p_payload) - p6_reply = (p_ip6 / p_payload) + p6 = ( + p_ether + / IPv6(src=self.pg1.remote_ip6, dst=self.pg0.local_ip6) + / p_ip6 + / p_payload + ) + p6_reply = p_ip6 / p_payload p6_reply.hlim = 63 rx = self.send_and_expect(self.pg1, p6 * 11, self.pg0) for p in rx: @@ -790,10 +875,10 @@ class TestIPIP6(VppTestCase): def verify_ip4ip6_encaps(self, a, p_ip4s, p_ip6_encaps): for i, p_ip4 in enumerate(p_ip4s): p_ip4.dst = a - p4 = (self.p_ether / p_ip4 / self.p_payload) + p4 = self.p_ether / p_ip4 / self.p_payload p_ip4_inner = p_ip4 p_ip4_inner.ttl -= 1 - p6_reply = (p_ip6_encaps[i] / p_ip4_inner / self.p_payload) + p6_reply = p_ip6_encaps[i] / p_ip4_inner / self.p_payload rx = self.send_and_expect(self.pg0, p4 * N_PACKETS, self.pg1) for p in rx: self.validate(p[1], p6_reply) @@ -802,17 +887,17 @@ class TestIPIP6(VppTestCase): def verify_ip6ip6_encaps(self, a, p_ip6s, p_ip6_encaps): for i, p_ip6 in enumerate(p_ip6s): p_ip6.dst = a - p6 = (self.p_ether / p_ip6 / self.p_payload) + p6 = self.p_ether / p_ip6 / self.p_payload p_inner_ip6 = p_ip6 p_inner_ip6.hlim -= 1 - p6_reply = (p_ip6_encaps[i] / p_inner_ip6 / self.p_payload) + p6_reply = p_ip6_encaps[i] / p_inner_ip6 / self.p_payload rx = self.send_and_expect(self.pg0, p6 * N_PACKETS, self.pg1) for p in rx: self.validate(p[1], p6_reply) self.assert_packet_checksums_valid(p) def test_ipip6(self): - """ ip{v4,v6} over ip6 test """ + """ip{v4,v6} over ip6 test""" # that's annoying self.destroy_tunnel() @@ -822,7 +907,7 @@ class TestIPIP6(VppTestCase): e = VppEnum.vl_api_tunnel_encap_decap_flags_t d = VppEnum.vl_api_ip_dscp_t self.p_ether = Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) - self.p_payload = UDP(sport=1234, dport=1234) / Raw(b'X' * 100) + self.p_payload = UDP(sport=1234, dport=1234) / Raw(b"X" * 100) # create a TOS byte by shifting a DSCP code point 2 bits. those 2 bits # are for the ECN. @@ -836,7 +921,8 @@ class TestIPIP6(VppTestCase): self.pg0, self.pg0.local_ip6, self.pg1.remote_hosts[0].ip6, - flags=e.TUNNEL_API_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP) + flags=e.TUNNEL_API_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP, + ) tun_dscp.add_vpp_config() # IPv4 transport that copies the DCSP and ECN from the payload tun_dscp_ecn = VppIpIpTunInterface( @@ -844,8 +930,11 @@ class TestIPIP6(VppTestCase): self.pg0, self.pg0.local_ip6, self.pg1.remote_hosts[1].ip6, - flags=(e.TUNNEL_API_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP | - e.TUNNEL_API_ENCAP_DECAP_FLAG_ENCAP_COPY_ECN)) + flags=( + e.TUNNEL_API_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP + | e.TUNNEL_API_ENCAP_DECAP_FLAG_ENCAP_COPY_ECN + ), + ) tun_dscp_ecn.add_vpp_config() # IPv4 transport that copies the ECN from the payload and sets the # DF bit on encap. copies the ECN on decap @@ -854,9 +943,12 @@ class TestIPIP6(VppTestCase): self.pg0, self.pg0.local_ip6, self.pg1.remote_hosts[2].ip6, - flags=(e.TUNNEL_API_ENCAP_DECAP_FLAG_ENCAP_COPY_ECN | - e.TUNNEL_API_ENCAP_DECAP_FLAG_ENCAP_SET_DF | - e.TUNNEL_API_ENCAP_DECAP_FLAG_DECAP_COPY_ECN)) + flags=( + e.TUNNEL_API_ENCAP_DECAP_FLAG_ENCAP_COPY_ECN + | e.TUNNEL_API_ENCAP_DECAP_FLAG_ENCAP_SET_DF + | e.TUNNEL_API_ENCAP_DECAP_FLAG_DECAP_COPY_ECN + ), + ) tun_ecn.add_vpp_config() # IPv4 transport that sets a fixed DSCP in the encap and copies # the DF bit @@ -866,7 +958,8 @@ class TestIPIP6(VppTestCase): self.pg0.local_ip6, self.pg1.remote_hosts[3].ip6, dscp=d.IP_API_DSCP_AF11, - flags=e.TUNNEL_API_ENCAP_DECAP_FLAG_ENCAP_COPY_DF) + flags=e.TUNNEL_API_ENCAP_DECAP_FLAG_ENCAP_COPY_DF, + ) tun.add_vpp_config() # array of all the tunnels @@ -877,22 +970,26 @@ class TestIPIP6(VppTestCase): a6s = ["" for i in range(len(tuns))] # IP headers for inner packets with each combination of DSCp/ECN tested - p_ip6s = [IPv6(src="1::1", dst="DEAD::1", nh='UDP', tc=dscp), - IPv6(src="1::1", dst="DEAD::1", nh='UDP', tc=dscp_ecn), - IPv6(src="1::1", dst="DEAD::1", nh='UDP', tc=ecn), - IPv6(src="1::1", dst="DEAD::1", nh='UDP', tc=0xff)] - p_ip4s = [IP(src="1.2.3.4", dst="130.67.0.1", tos=dscp, flags='DF'), - IP(src="1.2.3.4", dst="130.67.0.1", tos=dscp_ecn), - IP(src="1.2.3.4", dst="130.67.0.1", tos=ecn), - IP(src="1.2.3.4", dst="130.67.0.1", tos=0xff)] + p_ip6s = [ + IPv6(src="1::1", dst="DEAD::1", nh="UDP", tc=dscp), + IPv6(src="1::1", dst="DEAD::1", nh="UDP", tc=dscp_ecn), + IPv6(src="1::1", dst="DEAD::1", nh="UDP", tc=ecn), + IPv6(src="1::1", dst="DEAD::1", nh="UDP", tc=0xFF), + ] + p_ip4s = [ + IP(src="1.2.3.4", dst="130.67.0.1", tos=dscp, flags="DF"), + IP(src="1.2.3.4", dst="130.67.0.1", tos=dscp_ecn), + IP(src="1.2.3.4", dst="130.67.0.1", tos=ecn), + IP(src="1.2.3.4", dst="130.67.0.1", tos=0xFF), + ] # Configure each tunnel for i, t in enumerate(tuns): # Set interface up and enable IP on it self.vapi.sw_interface_set_flags(t.sw_if_index, 1) self.vapi.sw_interface_set_unnumbered( - sw_if_index=self.pg0.sw_if_index, - unnumbered_sw_if_index=t.sw_if_index) + sw_if_index=self.pg0.sw_if_index, unnumbered_sw_if_index=t.sw_if_index + ) # prefix for route / destination address for packets a4s[i] = "130.67.%d.0" % i @@ -900,17 +997,29 @@ class TestIPIP6(VppTestCase): # Add IPv4 and IPv6 routes via tunnel interface ip4_via_tunnel = VppIpRoute( - self, a4s[i], 24, - [VppRoutePath("0.0.0.0", - t.sw_if_index, - proto=FibPathProto.FIB_PATH_NH_PROTO_IP4)]) + self, + a4s[i], + 24, + [ + VppRoutePath( + "0.0.0.0", + t.sw_if_index, + proto=FibPathProto.FIB_PATH_NH_PROTO_IP4, + ) + ], + ) ip4_via_tunnel.add_vpp_config() ip6_via_tunnel = VppIpRoute( - self, a6s[i], 64, - [VppRoutePath("::", - t.sw_if_index, - proto=FibPathProto.FIB_PATH_NH_PROTO_IP6)]) + self, + a6s[i], + 64, + [ + VppRoutePath( + "::", t.sw_if_index, proto=FibPathProto.FIB_PATH_NH_PROTO_IP6 + ) + ], + ) ip6_via_tunnel.add_vpp_config() # @@ -920,10 +1029,10 @@ class TestIPIP6(VppTestCase): # tun_dscp copies only the dscp # expected TC values are thus only the DCSP value is present from the # inner - exp_tcs = [dscp, dscp, 0, 0xfc] - p_ip6_encaps = [IPv6(src=self.pg0.local_ip6, - dst=tun_dscp.dst, - tc=tc) for tc in exp_tcs] + exp_tcs = [dscp, dscp, 0, 0xFC] + p_ip6_encaps = [ + IPv6(src=self.pg0.local_ip6, dst=tun_dscp.dst, tc=tc) for tc in exp_tcs + ] # IPv4 in to IPv4 tunnel self.verify_ip4ip6_encaps(a4s[0], p_ip4s, p_ip6_encaps) @@ -931,28 +1040,29 @@ class TestIPIP6(VppTestCase): self.verify_ip6ip6_encaps(a6s[0], p_ip6s, p_ip6_encaps) # tun_dscp_ecn copies the dscp and the ecn - exp_tcs = [dscp, dscp_ecn, ecn, 0xff] - p_ip6_encaps = [IPv6(src=self.pg0.local_ip6, - dst=tun_dscp_ecn.dst, - tc=tc) for tc in exp_tcs] + exp_tcs = [dscp, dscp_ecn, ecn, 0xFF] + p_ip6_encaps = [ + IPv6(src=self.pg0.local_ip6, dst=tun_dscp_ecn.dst, tc=tc) for tc in exp_tcs + ] self.verify_ip4ip6_encaps(a4s[1], p_ip4s, p_ip6_encaps) self.verify_ip6ip6_encaps(a6s[1], p_ip6s, p_ip6_encaps) # tun_ecn copies only the ecn and always sets DF exp_tcs = [0, ecn, ecn, ecn] - p_ip6_encaps = [IPv6(src=self.pg0.local_ip6, - dst=tun_ecn.dst, - tc=tc) for tc in exp_tcs] + p_ip6_encaps = [ + IPv6(src=self.pg0.local_ip6, dst=tun_ecn.dst, tc=tc) for tc in exp_tcs + ] self.verify_ip4ip6_encaps(a4s[2], p_ip4s, p_ip6_encaps) self.verify_ip6ip6_encaps(a6s[2], p_ip6s, p_ip6_encaps) # tun sets a fixed dscp fixed_dscp = tun.dscp << 2 - p_ip6_encaps = [IPv6(src=self.pg0.local_ip6, - dst=tun.dst, - tc=fixed_dscp) for i in range(len(p_ip4s))] + p_ip6_encaps = [ + IPv6(src=self.pg0.local_ip6, dst=tun.dst, tc=fixed_dscp) + for i in range(len(p_ip4s)) + ] self.verify_ip4ip6_encaps(a4s[3], p_ip4s, p_ip6_encaps) self.verify_ip6ip6_encaps(a6s[3], p_ip6s, p_ip6_encaps) @@ -961,7 +1071,8 @@ class TestIPIP6(VppTestCase): # Decapsulation # n_packets_decapped = self.statistics.get_err_counter( - '/err/ipip6-input/packets decapsulated') + "/err/ipip6-input/packets decapsulated" + ) self.p_ether = Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) @@ -970,15 +1081,13 @@ class TestIPIP6(VppTestCase): # one overlay packet and all combinations of its encap p_ip4 = IP(src="1.2.3.4", dst=self.pg0.remote_ip4) - p_ip6_encaps = [IPv6(src=tun.dst, - dst=self.pg0.local_ip6, - tc=tc) for tc in tcs] + p_ip6_encaps = [IPv6(src=tun.dst, dst=self.pg0.local_ip6, tc=tc) for tc in tcs] # for each encap tun will produce the same inner packet because it does # not copy up fields from the payload for p_ip6_encap in p_ip6_encaps: - p6 = (self.p_ether / p_ip6_encap / p_ip4 / self.p_payload) - p4_reply = (p_ip4 / self.p_payload) + p6 = self.p_ether / p_ip6_encap / p_ip4 / self.p_payload + p4_reply = p_ip4 / self.p_payload p4_reply.ttl -= 1 rx = self.send_and_expect(self.pg1, p6 * N_PACKETS, self.pg0) n_packets_decapped += N_PACKETS @@ -986,20 +1095,19 @@ class TestIPIP6(VppTestCase): self.validate(p[1], p4_reply) self.assert_packet_checksums_valid(p) - err = self.statistics.get_err_counter( - '/err/ipip6-input/packets decapsulated') + err = self.statistics.get_err_counter("/err/ipip6-input/packets decapsulated") self.assertEqual(err, n_packets_decapped) # tun_ecn copies the ECN bits from the encap to the inner - p_ip6_encaps = [IPv6(src=tun_ecn.dst, - dst=self.pg0.local_ip6, - tc=tc) for tc in tcs] + p_ip6_encaps = [ + IPv6(src=tun_ecn.dst, dst=self.pg0.local_ip6, tc=tc) for tc in tcs + ] p_ip4_replys = [p_ip4.copy() for i in range(len(p_ip6_encaps))] p_ip4_replys[2].tos = ecn p_ip4_replys[3].tos = ecn for i, p_ip6_encap in enumerate(p_ip6_encaps): - p6 = (self.p_ether / p_ip6_encap / p_ip4 / self.p_payload) - p4_reply = (p_ip4_replys[i] / self.p_payload) + p6 = self.p_ether / p_ip6_encap / p_ip4 / self.p_payload + p4_reply = p_ip4_replys[i] / self.p_payload p4_reply.ttl -= 1 rx = self.send_and_expect(self.pg1, p6 * N_PACKETS, self.pg0) n_packets_decapped += N_PACKETS @@ -1007,20 +1115,17 @@ class TestIPIP6(VppTestCase): self.validate(p[1], p4_reply) self.assert_packet_checksums_valid(p) - err = self.statistics.get_err_counter( - '/err/ipip6-input/packets decapsulated') + err = self.statistics.get_err_counter("/err/ipip6-input/packets decapsulated") self.assertEqual(err, n_packets_decapped) # IPv6 tunnel to IPv6 # for each encap tun will produce the same inner packet because it does # not copy up fields from the payload - p_ip6_encaps = [IPv6(src=tun.dst, - dst=self.pg0.local_ip6, - tc=tc) for tc in tcs] + p_ip6_encaps = [IPv6(src=tun.dst, dst=self.pg0.local_ip6, tc=tc) for tc in tcs] p_ip6 = IPv6(src="1:2:3::4", dst=self.pg0.remote_ip6) for p_ip6_encap in p_ip6_encaps: - p6 = (self.p_ether / p_ip6_encap / p_ip6 / self.p_payload) - p6_reply = (p_ip6 / self.p_payload) + p6 = self.p_ether / p_ip6_encap / p_ip6 / self.p_payload + p6_reply = p_ip6 / self.p_payload p6_reply.hlim = 63 rx = self.send_and_expect(self.pg1, p6 * N_PACKETS, self.pg0) n_packets_decapped += N_PACKETS @@ -1028,22 +1133,21 @@ class TestIPIP6(VppTestCase): self.validate(p[1], p6_reply) self.assert_packet_checksums_valid(p) - err = self.statistics.get_err_counter( - '/err/ipip6-input/packets decapsulated') + err = self.statistics.get_err_counter("/err/ipip6-input/packets decapsulated") self.assertEqual(err, n_packets_decapped) # IPv6 tunnel to IPv6 # tun_ecn copies the ECN bits from the encap to the inner - p_ip6_encaps = [IPv6(src=tun_ecn.dst, - dst=self.pg0.local_ip6, - tc=tc) for tc in tcs] + p_ip6_encaps = [ + IPv6(src=tun_ecn.dst, dst=self.pg0.local_ip6, tc=tc) for tc in tcs + ] p_ip6 = IPv6(src="1:2:3::4", dst=self.pg0.remote_ip6) p_ip6_replys = [p_ip6.copy() for i in range(len(p_ip6_encaps))] p_ip6_replys[2].tc = ecn p_ip6_replys[3].tc = ecn for i, p_ip6_encap in enumerate(p_ip6_encaps): - p6 = (self.p_ether / p_ip6_encap / p_ip6 / self.p_payload) - p6_reply = (p_ip6_replys[i] / self.p_payload) + p6 = self.p_ether / p_ip6_encap / p_ip6 / self.p_payload + p6_reply = p_ip6_replys[i] / self.p_payload p6_reply.hlim = 63 rx = self.send_and_expect(self.pg1, p6 * N_PACKETS, self.pg0) n_packets_decapped += N_PACKETS @@ -1051,15 +1155,14 @@ class TestIPIP6(VppTestCase): self.validate(p[1], p6_reply) self.assert_packet_checksums_valid(p) - err = self.statistics.get_err_counter( - '/err/ipip6-input/packets decapsulated') + err = self.statistics.get_err_counter("/err/ipip6-input/packets decapsulated") self.assertEqual(err, n_packets_decapped) def test_frag(self): - """ ip{v4,v6} over ip6 test frag """ + """ip{v4,v6} over ip6 test frag""" p_ether = Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) - p_ip6 = IPv6(src="1::1", dst="DEAD::1", tc=42, nh='UDP') + p_ip6 = IPv6(src="1::1", dst="DEAD::1", tc=42, nh="UDP") p_ip4 = IP(src="1.2.3.4", dst=self.pg0.remote_ip4) p_payload = UDP(sport=1234, dport=1234) @@ -1067,17 +1170,21 @@ class TestIPIP6(VppTestCase): # Fragmentation / Reassembly and Re-fragmentation # rv = self.vapi.ip_reassembly_enable_disable( - sw_if_index=self.pg1.sw_if_index, - enable_ip6=1) + sw_if_index=self.pg1.sw_if_index, enable_ip6=1 + ) - self.vapi.ip_reassembly_set(timeout_ms=1000, max_reassemblies=1000, - max_reassembly_length=1000, - expire_walk_interval_ms=10000, - is_ip6=1) + self.vapi.ip_reassembly_set( + timeout_ms=1000, + max_reassemblies=1000, + max_reassembly_length=1000, + expire_walk_interval_ms=10000, + is_ip6=1, + ) # Send lots of fragments, verify reassembled packet before_cnt = self.statistics.get_err_counter( - '/err/ipip6-input/packets decapsulated') + "/err/ipip6-input/packets decapsulated" + ) frags, p6_reply = self.generate_ip6_frags(3131, 1400) f = [] for i in range(0, 1000): @@ -1090,8 +1197,7 @@ class TestIPIP6(VppTestCase): for p in rx: self.validate(p[1], p6_reply) - cnt = self.statistics.get_err_counter( - '/err/ipip6-input/packets decapsulated') + cnt = self.statistics.get_err_counter("/err/ipip6-input/packets decapsulated") self.assertEqual(cnt, before_cnt + 1000) f = [] @@ -1117,10 +1223,12 @@ class TestIPIP6(VppTestCase): # IPv6 in to IPv6 tunnel p_payload = UDP(sport=1234, dport=1234) / self.payload(1300) - p6 = (p_ether / p_ip6 / p_payload) - p6_reply = (IPv6(src=self.pg0.local_ip6, dst=self.pg1.remote_ip6, - hlim=63) / - p_ip6 / p_payload) + p6 = p_ether / p_ip6 / p_payload + p6_reply = ( + IPv6(src=self.pg0.local_ip6, dst=self.pg1.remote_ip6, hlim=63) + / p_ip6 + / p_payload + ) p6_reply[1].hlim -= 1 self.pg_enable_capture() self.pg0.add_stream(p6) @@ -1150,40 +1258,95 @@ class TestIPIP6(VppTestCase): p6_reply.id = 256 self.validate(reass_pkt, p6_reply) + def test_ip6_mpls_frag(self): + """Test fragmenting IPv6 over MPLS""" + + # IPv6 packets must be locally generated to be fragmented + # the use of tunnel encaps + tun_dst = VppIpRoute( + self, + "1000::1", + 128, + [ + VppRoutePath( + self.pg1.remote_ip6, self.pg1.sw_if_index, labels=[VppMplsLabel(32)] + ) + ], + ).add_vpp_config() + + tun = VppIpIpTunInterface( + self, self.pg0, self.pg0.local_ip6, "1000::1" + ).add_vpp_config() + + tun.admin_up() + tun.config_ip6() + tun.config_ip4() + + self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index, [2000, 0, 0, 0]) + + p_6k = ( + Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) + / IPv6(src=self.pg0.remote_ip6, dst=tun.remote_ip6) + / UDP(sport=1234, dport=5678) + / Raw(b"0xa" * 2000) + ) + p_2k = ( + Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) + / IPv6(src=self.pg0.remote_ip6, dst=tun.remote_ip6) + / UDP(sport=1234, dport=5678) + / Raw(b"0xa" * 1000) + ) + p_1k = ( + Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) + / IPv6(src=self.pg0.remote_ip6, dst=tun.remote_ip6) + / UDP(sport=1234, dport=5678) + / Raw(b"0xa" * 600) + ) + + # this is now the interface MTU frags + rxs = self.send_and_expect(self.pg0, [p_6k], self.pg1, n_rx=4) + self.assertEqual(rxs[0][UDP].dport, 5678) + for rx in rxs: + self.assertEqual(rx[MPLS].label, 32) + self.assertEqual(rx[IPv6].dst, "1000::1") + self.assertEqual(rx[IPv6].dst, "1000::1") + self.send_and_expect(self.pg0, [p_2k], self.pg1, n_rx=2) + self.send_and_expect(self.pg0, [p_1k], self.pg1) + def test_ipip_create(self): - """ ipip create / delete interface test """ - rv = ipip_add_tunnel(self, '1.2.3.4', '2.3.4.5') + """ipip create / delete interface test""" + rv = ipip_add_tunnel(self, "1.2.3.4", "2.3.4.5") sw_if_index = rv.sw_if_index self.vapi.ipip_del_tunnel(sw_if_index) def test_ipip_vrf_create(self): - """ ipip create / delete interface VRF test """ + """ipip create / delete interface VRF test""" t = VppIpTable(self, 20) t.add_vpp_config() - rv = ipip_add_tunnel(self, '1.2.3.4', '2.3.4.5', table_id=20) + rv = ipip_add_tunnel(self, "1.2.3.4", "2.3.4.5", table_id=20) sw_if_index = rv.sw_if_index self.vapi.ipip_del_tunnel(sw_if_index) def payload(self, len): - return 'x' * len + return "x" * len -class TestMPLS(VppTestCase): - """ MPLS Test Case """ +class TestIPIPMPLS(VppTestCase): + """MPLS Test Case""" @classmethod def setUpClass(cls): - super(TestMPLS, cls).setUpClass() + super(TestIPIPMPLS, cls).setUpClass() cls.create_pg_interfaces(range(2)) cls.interfaces = list(cls.pg_interfaces) @classmethod def tearDownClass(cls): - super(TestMPLS, cls).tearDownClass() + super(TestIPIPMPLS, cls).tearDownClass() def setUp(self): - super(TestMPLS, self).setUp() + super(TestIPIPMPLS, self).setUp() for i in self.interfaces: i.admin_up() i.config_ip4() @@ -1193,7 +1356,7 @@ class TestMPLS(VppTestCase): i.resolve_ndp() def tearDown(self): - super(TestMPLS, self).tearDown() + super(TestIPIPMPLS, self).tearDown() for i in self.pg_interfaces: i.unconfig_ip4() @@ -1201,62 +1364,69 @@ class TestMPLS(VppTestCase): i.admin_down() def test_mpls(self): - """ MPLS over ip{6,4} test """ + """MPLS over ip{6,4} test""" tbl = VppMplsTable(self, 0) tbl.add_vpp_config() self.p_ether = Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) - self.p_payload = UDP(sport=1234, dport=1234) / Raw(b'X' * 100) + self.p_payload = UDP(sport=1234, dport=1234) / Raw(b"X" * 100) f = FibPathProto # IPv4 transport tun4 = VppIpIpTunInterface( - self, - self.pg1, - self.pg1.local_ip4, - self.pg1.remote_ip4).add_vpp_config() + self, self.pg1, self.pg1.local_ip4, self.pg1.remote_ip4 + ).add_vpp_config() tun4.admin_up() tun4.config_ip4() tun4.enable_mpls() # IPv6 transport tun6 = VppIpIpTunInterface( - self, - self.pg1, - self.pg1.local_ip6, - self.pg1.remote_ip6).add_vpp_config() + self, self.pg1, self.pg1.local_ip6, self.pg1.remote_ip6 + ).add_vpp_config() tun6.admin_up() tun6.config_ip6() tun6.enable_mpls() # ip routes into the tunnels with output labels - r4 = VppIpRoute(self, "1.1.1.1", 32, - [VppRoutePath( - tun4.remote_ip4, - tun4.sw_if_index, - labels=[VppMplsLabel(44)])]).add_vpp_config() - r6 = VppIpRoute(self, "1::1", 128, - [VppRoutePath( - tun6.remote_ip6, - tun6.sw_if_index, - labels=[VppMplsLabel(66)])]).add_vpp_config() + r4 = VppIpRoute( + self, + "1.1.1.1", + 32, + [ + VppRoutePath( + tun4.remote_ip4, tun4.sw_if_index, labels=[VppMplsLabel(44)] + ) + ], + ).add_vpp_config() + r6 = VppIpRoute( + self, + "1::1", + 128, + [ + VppRoutePath( + tun6.remote_ip6, tun6.sw_if_index, labels=[VppMplsLabel(66)] + ) + ], + ).add_vpp_config() # deag MPLS routes from the tunnel - r4 = VppMplsRoute(self, 44, 1, - [VppRoutePath( - self.pg0.remote_ip4, - self.pg0.sw_if_index)]).add_vpp_config() - r6 = VppMplsRoute(self, 66, 1, - [VppRoutePath( - self.pg0.remote_ip6, - self.pg0.sw_if_index)], - eos_proto=f.FIB_PATH_NH_PROTO_IP6).add_vpp_config() + r4 = VppMplsRoute( + self, 44, 1, [VppRoutePath(self.pg0.remote_ip4, self.pg0.sw_if_index)] + ).add_vpp_config() + r6 = VppMplsRoute( + self, + 66, + 1, + [VppRoutePath(self.pg0.remote_ip6, self.pg0.sw_if_index)], + eos_proto=f.FIB_PATH_NH_PROTO_IP6, + ).add_vpp_config() # # Tunnel Encap # - p4 = (self.p_ether / IP(src="2.2.2.2", dst="1.1.1.1") / self.p_payload) + p4 = self.p_ether / IP(src="2.2.2.2", dst="1.1.1.1") / self.p_payload rxs = self.send_and_expect(self.pg0, p4 * N_PACKETS, self.pg1) @@ -1268,7 +1438,7 @@ class TestMPLS(VppTestCase): self.assertEqual(inner.src, "2.2.2.2") self.assertEqual(inner.dst, "1.1.1.1") - p6 = (self.p_ether / IPv6(src="2::2", dst="1::1") / self.p_payload) + p6 = self.p_ether / IPv6(src="2::2", dst="1::1") / self.p_payload rxs = self.send_and_expect(self.pg0, p6 * N_PACKETS, self.pg1) @@ -1283,13 +1453,13 @@ class TestMPLS(VppTestCase): # # Tunnel Decap # - p4 = (self.p_ether / - IP(src=self.pg1.remote_ip4, - dst=self.pg1.local_ip4) / - MPLS(label=44, ttl=4) / - IP(src="1.1.1.1", - dst="2.2.2.2") / - self.p_payload) + p4 = ( + self.p_ether + / IP(src=self.pg1.remote_ip4, dst=self.pg1.local_ip4) + / MPLS(label=44, ttl=4) + / IP(src="1.1.1.1", dst="2.2.2.2") + / self.p_payload + ) rxs = self.send_and_expect(self.pg1, p4 * N_PACKETS, self.pg0) @@ -1297,13 +1467,13 @@ class TestMPLS(VppTestCase): self.assertEqual(rx[IP].src, "1.1.1.1") self.assertEqual(rx[IP].dst, "2.2.2.2") - p6 = (self.p_ether / - IPv6(src=self.pg1.remote_ip6, - dst=self.pg1.local_ip6) / - MPLS(label=66, ttl=4) / - IPv6(src="1::1", - dst="2::2") / - self.p_payload) + p6 = ( + self.p_ether + / IPv6(src=self.pg1.remote_ip6, dst=self.pg1.local_ip6) + / MPLS(label=66, ttl=4) + / IPv6(src="1::1", dst="2::2") + / self.p_payload + ) rxs = self.send_and_expect(self.pg1, p6 * N_PACKETS, self.pg0) @@ -1315,5 +1485,5 @@ class TestMPLS(VppTestCase): tun6.disable_mpls() -if __name__ == '__main__': +if __name__ == "__main__": unittest.main(testRunner=VppTestRunner) |