def setUp(self): super(TestGSO, self).setUp() for i in self.pg_interfaces: i.admin_up() i.config_ip4() i.config_ip6() i.disable_ipv6_ra() i.resolve_arp() i.resolve_ndp() self.single_tunnel_bd = 10 self.vxlan = VppVxlanTunnel(self, src=self.pg0.local_ip4, dst=self.pg0.remote_ip4, vni=self.single_tunnel_bd) self.vxlan2 = VppVxlanTunnel(self, src=self.pg0.local_ip6, dst=self.pg0.remote_ip6, vni=self.single_tunnel_bd) self.ipip4 = VppIpIpTunInterface(self, self.pg0, self.pg0.local_ip4, self.pg0.remote_ip4) self.ipip6 = VppIpIpTunInterface(self, self.pg0, self.pg0.local_ip6, self.pg0.remote_ip6)
def config_network(self, p): p.tun_if = VppIpIpTunInterface(self, self.pg0, self.pg0.local_ip4, self.pg0.remote_ip4) p.tun_if.add_vpp_config() p.tun_if.admin_up() p.tun_if.config_ip4() p.route = VppIpRoute(self, p.remote_tun_if_host, 32, [VppRoutePath(p.tun_if.remote_ip4, 0xffffffff)]) p.route.add_vpp_config()
def config_network(self, p): p.tun_if = VppIpIpTunInterface(self, self.pg0, self.pg0.local_ip6, self.pg0.remote_ip6) p.tun_if.add_vpp_config() p.tun_if.admin_up() p.tun_if.config_ip6() p.route = VppIpRoute(self, p.remote_tun_if_host, 128, [ VppRoutePath( p.tun_if.remote_ip6, 0xffffffff, proto=DpoProto.DPO_PROTO_IP6) ]) p.route.add_vpp_config()
def test_ipip6(self): """ ip{v4,v6} over ip6 test """ # that's annoying self.destroy_tunnel() self.pg1.generate_remote_hosts(5) self.pg1.configure_ipv6_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) # create a TOS byte by shifting a DSCP code point 2 bits. those 2 bits # are for the ECN. dscp = d.IP_API_DSCP_AF31 << 2 ecn = 3 dscp_ecn = d.IP_API_DSCP_AF31 << 2 | ecn # IPv4 transport that copies the DCSP from the payload tun_dscp = VppIpIpTunInterface( self, self.pg0, self.pg0.local_ip6, self.pg1.remote_hosts[0].ip6, 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( self, 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)) 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 tun_ecn = VppIpIpTunInterface( self, 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)) tun_ecn.add_vpp_config() # IPv4 transport that sets a fixed DSCP in the encap and copies # the DF bit tun = VppIpIpTunInterface( self, self.pg0, 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) tun.add_vpp_config() # array of all the tunnels tuns = [tun_dscp, tun_dscp_ecn, tun_ecn, tun] # addresses for prefixes routed via each tunnel a4s = ["" for i in range(len(tuns))] 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) ] # 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) # prefix for route / destination address for packets a4s[i] = "130.67.%d.0" % i a6s[i] = "dead:%d::" % i # 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) ]) 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) ]) ip6_via_tunnel.add_vpp_config() # # Encapsulation # # 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 ] # IPv4 in to IPv4 tunnel self.verify_ip4ip6_encaps(a4s[0], p_ip4s, p_ip6_encaps) # IPv6 in to IPv4 tunnel 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 ] 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 ] 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)) ] self.verify_ip4ip6_encaps(a4s[3], p_ip4s, p_ip6_encaps) self.verify_ip6ip6_encaps(a6s[3], p_ip6s, p_ip6_encaps) # # Decapsulation # n_packets_decapped = self.statistics.get_err_counter( '/err/ipip6-input/packets decapsulated') self.p_ether = Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) # IPv6 tunnel to IPv4 tcs = [0, dscp, dscp_ecn, ecn] # 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 ] # 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) p4_reply.ttl -= 1 rx = self.send_and_expect(self.pg1, p6 * N_PACKETS, self.pg0) n_packets_decapped += N_PACKETS for p in rx: self.validate(p[1], p4_reply) self.assert_packet_checksums_valid(p) 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_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) p4_reply.ttl -= 1 rx = self.send_and_expect(self.pg1, p6 * N_PACKETS, self.pg0) n_packets_decapped += N_PACKETS for p in rx: self.validate(p[1], p4_reply) self.assert_packet_checksums_valid(p) 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 = 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_reply.hlim = 63 rx = self.send_and_expect(self.pg1, p6 * N_PACKETS, self.pg0) n_packets_decapped += N_PACKETS for p in rx: self.validate(p[1], p6_reply) self.assert_packet_checksums_valid(p) 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 = 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_reply.hlim = 63 rx = self.send_and_expect(self.pg1, p6 * N_PACKETS, self.pg0) n_packets_decapped += N_PACKETS for p in rx: self.validate(p[1], p6_reply) self.assert_packet_checksums_valid(p) err = self.statistics.get_err_counter( '/err/ipip6-input/packets decapsulated') self.assertEqual(err, n_packets_decapped)
def test_mipip4(self): """ p2mp IPv4 tunnel Tests """ for itf in self.pg_interfaces: # # one underlay nh for each overlay/tunnel peer # itf.generate_remote_hosts(4) itf.configure_ipv4_neighbors() # # Create an p2mo IPIP tunnel. # - set it admin up # - 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.add_vpp_config() ipip_if.admin_up() ipip_if.config_ip4() ipip_if.generate_remote_hosts(4) self.logger.info(self.vapi.cli("sh adj")) self.logger.info(self.vapi.cli("sh ip fib")) # # ensure we don't match to the tunnel if the source address # is all zeros # # tx = self.create_tunnel_stream_4o4(self.pg0, # "0.0.0.0", # itf.local_ip4, # self.pg0.local_ip4, # self.pg0.remote_ip4) # self.send_and_assert_no_replies(self.pg0, tx) # # for-each peer # for ii in range(1, 4): route_addr = "4.4.4.%d" % ii # # 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) ]) 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.add_vpp_config() 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) ] rxs = self.send_and_expect(self.pg0, tx_e, itf) for rx in rxs: 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) ] self.logger.info(self.vapi.cli("sh ipip tunnel-hash")) rx = self.send_and_expect(self.pg0, tx_i, self.pg0) # # delete and re-add the TEIB # teib.remove_vpp_config() self.send_and_assert_no_replies(self.pg0, tx_e) self.send_and_assert_no_replies(self.pg0, tx_i) teib.add_vpp_config() rx = self.send_and_expect(self.pg0, tx_e, itf) for rx in rxs: self.assertEqual(rx[IP].src, itf.local_ip4) self.assertEqual(rx[IP].dst, itf._remote_hosts[ii].ip4) rx = self.send_and_expect(self.pg0, tx_i, self.pg0) ipip_if.admin_down() ipip_if.unconfig_ip4()
def test_ipip4(self): """ 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) # create a TOS byte by shifting a DSCP code point 2 bits. those 2 bits # are for the ECN. dscp = d.IP_API_DSCP_AF31 << 2 ecn = 3 dscp_ecn = d.IP_API_DSCP_AF31 << 2 | ecn # IPv4 transport that copies the DCSP from the payload tun_dscp = VppIpIpTunInterface( self, self.pg0, self.pg0.local_ip4, self.pg1.remote_hosts[0].ip4, 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( self, 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)) 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 tun_ecn = VppIpIpTunInterface( self, 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)) tun_ecn.add_vpp_config() # IPv4 transport that sets a fixed DSCP in the encap and copies # the DF bit tun = VppIpIpTunInterface( self, self.pg0, 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) tun.add_vpp_config() # array of all the tunnels tuns = [tun_dscp, tun_dscp_ecn, tun_ecn, tun] # addresses for prefixes routed via each tunnel a4s = ["" for i in range(len(tuns))] 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) ] # 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) # prefix for route / destination address for packets a4s[i] = "130.67.%d.0" % i a6s[i] = "dead:%d::" % i # 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) ]) 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) ]) ip6_via_tunnel.add_vpp_config() # # Encapsulation # # 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 ] # IPv4 in to IPv4 tunnel self.verify_ip4ip4_encaps(a4s[0], p_ip4s, p_ip44_encaps) # IPv6 in to IPv4 tunnel 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 ] 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 ] 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)) ] self.verify_ip4ip4_encaps(a4s[3], p_ip4s, p_ip44_encaps) self.verify_ip6ip4_encaps(a6s[3], p_ip6s, p_ip64_encaps) # # Decapsulation # n_packets_decapped = 0 self.p_ether = Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac) # IPv4 tunnel to IPv4 tcs = [0, dscp, dscp_ecn, ecn] # 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 ] # 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_reply.ttl -= 1 rx = self.send_and_expect(self.pg1, p4 * N_PACKETS, self.pg0) n_packets_decapped += N_PACKETS for p in rx: self.validate(p[1], p4_reply) self.assert_packet_checksums_valid(p) 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_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_reply.ttl -= 1 rx = self.send_and_expect(self.pg1, p4 * N_PACKETS, self.pg0) n_packets_decapped += N_PACKETS for p in rx: self.validate(p[1], p4_reply) self.assert_packet_checksums_valid(p) 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_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_reply.hlim = 63 rx = self.send_and_expect(self.pg1, p6 * N_PACKETS, self.pg0) n_packets_decapped += N_PACKETS for p in rx: self.validate(p[1], p6_reply) self.assert_packet_checksums_valid(p) 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_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_reply.hlim = 63 rx = self.send_and_expect(self.pg1, p6 * N_PACKETS, self.pg0) n_packets_decapped += N_PACKETS for p in rx: self.validate(p[1], p6_reply) self.assert_packet_checksums_valid(p) 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) 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) f = [] for i in range(0, 1000): f.extend(frags) self.pg1.add_stream(f) self.pg_enable_capture() self.pg_start() rx = self.pg0.get_capture(1000) n_packets_decapped += 1000 for p in rx: self.validate(p[1], p4_reply) err = self.statistics.get_err_counter( '/err/ipip4-input/packets decapsulated') self.assertEqual(err, n_packets_decapped) f = [] r = [] for i in range(1, 90): frags, p4_reply = self.generate_ip4_frags(i * 100, 1000) f.extend(frags) r.extend(p4_reply) self.pg_enable_capture() self.pg1.add_stream(f) self.pg_start() rx = self.pg0.get_capture(89) i = 0 for p in rx: self.validate(p[1], r[i]) i += 1 # Now try with re-fragmentation # # Send fragments to tunnel head-end, for the tunnel head end # to reassemble and then refragment # self.vapi.sw_interface_set_mtu(self.pg0.sw_if_index, [576, 0, 0, 0]) frags, p4_reply = self.generate_ip4_frags(3123, 1200) self.pg_enable_capture() self.pg1.add_stream(frags) self.pg_start() rx = self.pg0.get_capture(6) reass_pkt = reassemble4(rx) p4_reply.id = 256 self.validate(reass_pkt, p4_reply) self.vapi.sw_interface_set_mtu(self.pg0.sw_if_index, [1600, 0, 0, 0]) frags, p4_reply = self.generate_ip4_frags(3123, 1200) self.pg_enable_capture() self.pg1.add_stream(frags) self.pg_start() rx = self.pg0.get_capture(2) reass_pkt = reassemble4(rx) p4_reply.id = 512 self.validate(reass_pkt, p4_reply) # 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)) rx = self.send_and_expect(self.pg0, p4 * 15, self.pg1, 30) inners = [] for p in rx: inners.append(p[IP].payload) reass_pkt = reassemble4(inners) for p in reass_pkt: self.assert_packet_checksums_valid(p) self.assertEqual(p[IP].ttl, 63)
def test_mpls(self): """ 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) f = FibPathProto # IPv4 transport tun4 = VppIpIpTunInterface(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() 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() # 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() # # Tunnel Encap # 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) for rx in rxs: self.assertEqual(rx[IP].src, self.pg1.local_ip4) self.assertEqual(rx[IP].dst, self.pg1.remote_ip4) self.assertEqual(rx[MPLS].label, 44) inner = rx[MPLS].payload 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) rxs = self.send_and_expect(self.pg0, p6 * N_PACKETS, self.pg1) for rx in rxs: self.assertEqual(rx[IPv6].src, self.pg1.local_ip6) self.assertEqual(rx[IPv6].dst, self.pg1.remote_ip6) self.assertEqual(rx[MPLS].label, 66) inner = rx[MPLS].payload self.assertEqual(inner.src, "2::2") self.assertEqual(inner.dst, "1::1") # # 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) rxs = self.send_and_expect(self.pg1, p4 * N_PACKETS, self.pg0) for rx in rxs: 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) rxs = self.send_and_expect(self.pg1, p6 * N_PACKETS, self.pg0) for rx in rxs: self.assertEqual(rx[IPv6].src, "1::1") self.assertEqual(rx[IPv6].dst, "2::2") tun4.disable_mpls() tun6.disable_mpls()
def test_linux_cp_tun(self): """ Linux CP TUN """ # # Setup # N_PKTS = 31 # create two pairs, wihch a bunch of hots on the phys hosts = [self.pg4, self.pg5] phy = self.pg2 phy.config_ip4() phy.config_ip6() phy.resolve_arp() phy.resolve_ndp() tun4 = VppIpIpTunInterface( self, phy, phy.local_ip4, phy.remote_ip4).add_vpp_config() tun6 = VppIpIpTunInterface( self, phy, phy.local_ip6, phy.remote_ip6).add_vpp_config() tuns = [tun4, tun6] tun4.admin_up() tun4.config_ip4() tun6.admin_up() tun6.config_ip6() pair1 = VppLcpPair(self, tuns[0], hosts[0]).add_vpp_config() pair2 = VppLcpPair(self, tuns[1], hosts[1]).add_vpp_config() self.logger.info(self.vapi.cli("sh lcp adj verbose")) self.logger.info(self.vapi.cli("sh lcp")) self.logger.info(self.vapi.cli("sh ip punt redirect")) # # Traffic Tests # # host to phy for v4 p = (IP(src=tun4.local_ip4, dst="2.2.2.2") / UDP(sport=1234, dport=1234) / Raw()) rxs = self.send_and_expect(self.pg4, p * N_PKTS, phy) # verify inner packet is unchanged and has the tunnel encap for rx in rxs: self.assertEqual(rx[Ether].dst, phy.remote_mac) self.assertEqual(rx[IP].dst, phy.remote_ip4) self.assertEqual(rx[IP].src, phy.local_ip4) inner = IP(rx[IP].payload) self.assertEqual(inner.src, tun4.local_ip4) self.assertEqual(inner.dst, "2.2.2.2") # host to phy for v6 p = (IPv6(src=tun6.local_ip6, dst="2::2") / UDP(sport=1234, dport=1234) / Raw()) rxs = self.send_and_expect(self.pg5, p * N_PKTS, phy) # verify inner packet is unchanged and has the tunnel encap for rx in rxs: self.assertEqual(rx[IPv6].dst, phy.remote_ip6) self.assertEqual(rx[IPv6].src, phy.local_ip6) inner = IPv6(rx[IPv6].payload) self.assertEqual(inner.src, tun6.local_ip6) self.assertEqual(inner.dst, "2::2") # phy to host v4 p = (Ether(dst=phy.local_mac, src=phy.remote_mac) / IP(dst=phy.local_ip4, src=phy.remote_ip4) / IP(dst=tun4.local_ip4, src=tun4.remote_ip4) / UDP(sport=1234, dport=1234) / Raw()) rxs = self.send_and_expect(phy, p * N_PKTS, self.pg4) for rx in rxs: rx = IP(rx) self.assertEqual(rx[IP].dst, tun4.local_ip4) self.assertEqual(rx[IP].src, tun4.remote_ip4) # phy to host v6 p = (Ether(dst=phy.local_mac, src=phy.remote_mac) / IPv6(dst=phy.local_ip6, src=phy.remote_ip6) / IPv6(dst=tun6.local_ip6, src=tun6.remote_ip6) / UDP(sport=1234, dport=1234) / Raw()) rxs = self.send_and_expect(phy, p * N_PKTS, self.pg5) for rx in rxs: rx = IPv6(rx) self.assertEqual(rx[IPv6].dst, tun6.local_ip6) self.assertEqual(rx[IPv6].src, tun6.remote_ip6) # cleanup phy.unconfig_ip4() phy.unconfig_ip6() tun4.unconfig_ip4() tun6.unconfig_ip6()