#!/usr/bin/env python import unittest from logging import * from framework import VppTestCase, VppTestRunner from vpp_sub_interface import VppDot1QSubint from vpp_gre_interface import VppGreInterface, VppGre6Interface from vpp_ip_route import VppIpRoute, VppRoutePath, DpoProto, VppIpTable from vpp_papi_provider import L2_VTR_OP from scapy.packet import Raw from scapy.layers.l2 import Ether, Dot1Q, GRE from scapy.layers.inet import IP, UDP from scapy.layers.inet6 import IPv6 from scapy.volatile import RandMAC, RandIP from util import ppp, ppc class GreTunnelTypes: TT_L3 = 0 TT_TEB = 1 TT_ERSPAN = 2 class TestGRE(VppTestCase): """ GRE Test Case """ @classmethod def setUpClass(cls): super(TestGRE, cls).setUpClass() def setUp(self): super(TestGRE, self).setUp() # create 3 pg interfaces - set one in a non-default table. self.create_pg_interfaces(range(3)) self.tbl = VppIpTable(self, 1) self.tbl.add_vpp_config() self.pg1.set_table_ip4(1) for i in self.pg_interfaces: i.admin_up() self.pg0.config_ip4() self.pg0.resolve_arp() self.pg1.config_ip4() self.pg1.resolve_arp() self.pg2.config_ip6() self.pg2.resolve_ndp() def tearDown(self): for i in self.pg_interfaces: i.unconfig_ip4() i.unconfig_ip6() i.admin_down() self.pg1.set_table_ip4(0) super(TestGRE, self).tearDown() def create_stream_ip4(self, src_if, src_ip, dst_ip): pkts = [] for i in range(0, 257): info = self.create_packet_info(src_if, src_if) payload = self.info_to_payload(info) p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) / IP(src=src_ip, dst=dst_ip) / UDP(sport=1234, dport=1234) / Raw(payload)) info.data = p.copy() pkts.append(p) return pkts def create_stream_ip6(self, src_if, src_ip, dst_ip): pkts = [] for i in range(0, 257): info = self.create_packet_info(src_if, src_if) payload = self.info_to_payload(info) p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) / IPv6(src=src_ip, dst=dst_ip) / UDP(sport=1234, dport=1234) / Raw(payload)) info.data = p.copy() pkts.append(p) return pkts def create_tunnel_stream_4o4(self, src_if, tunnel_src, tunnel_dst, src_ip, dst_ip): pkts = [] for i in range(0, 257): info = self.create_packet_info(src_if, src_if) payload = self.info_to_payload(info) p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) / IP(src=tunnel_src, dst=tunnel_dst) / GRE() / IP(src=src_ip, dst=dst_ip) / UDP(sport=1234, dport=1234) / Raw(payload)) info.data = p.copy() pkts.append(p) return pkts def create_tunnel_stream_6o4(self, src_if, tunnel_src, tunnel_dst, src_ip, dst_ip): pkts = [] for i in range(0, 257): info = self.create_packet_info(src_if, src_if) payload = self.info_to_payload(info) p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) / IP(src=tunnel_src, dst=tunnel_dst) / GRE() / IPv6(src=src_ip, dst=dst_ip) / UDP(sport=1234, dport=1234) / Raw(payload)) info.data = p.copy() pkts.append(p) return pkts def create_tunnel_stream_6o6(self, src_if, tunnel_src, tunnel_dst, src_ip, dst_ip): pkts = [] for i in range(0, 257): info = self.create_packet_info(src_if, src_if) payload = self.info_to_payload(info) p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) / IPv6(src=tunnel_src, dst=tunnel_dst) / GRE() / IPv6(src=src_ip, dst=dst_ip) / UDP(sport=1234, dport=1234) / Raw(payload)) info.data = p.copy() pkts.append(p) return pkts def create_tunnel_stream_l2o4(self, src_if, tunnel_src, tunnel_dst): pkts = [] for i in range(0, 257): info = self.create_packet_info(src_if, src_if) payload = self.info_to_payload(info) p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) / IP(src=tunnel_src, dst=tunnel_dst) / GRE() / Ether(dst=RandMAC('*:*:*:*:*:*'), src=RandMAC('*:*:*:*:*:*')) / IP(src=str(RandIP()), dst=str(RandIP())) / UDP(sport=1234, dport=1234) / Raw(payload)) info.data = p.copy() pkts.append(p) return pkts def create_tunnel_stream_vlano4(self, src_if, tunnel_src, tunnel_dst, vlan): pkts = [] for i in range(0, 257): info = self.create_packet_info(src_if, src_if) payload = self.info_to_payload(info) p = (Ether(dst=src_if.local_mac, src=src_if.remote_mac) / IP(src=tunnel_src, dst=tunnel_dst) / GRE() / Ether(dst=RandMAC('*:*:*:*:*:*'), src=RandMAC('*:*:*:*:*:*')) / Dot1Q(vlan=vlan) / IP(src=str(RandIP()), dst=str(RandIP())) / UDP(sport=1234, dport=1234) / Raw(payload)) info.data = p.copy() pkts.append(p) return pkts def verify_tunneled_4o4(self, src_if, capture, sent, tunnel_src, tunnel_dst): self.assertEqual(len(capture), len(sent)) for i in range(len(capture)): try: tx = sent[i] rx = capture[i] tx_ip = tx[IP] rx_ip = rx[IP] self.assertEqual(rx_i
# Process this file with autoconf to produce a configure script.
AC_INIT(libvppinfra,1.0,)
AC_CONFIG_AUX_DIR(config)
AC_CONFIG_HEADERS(config/config.h)
AC_CANONICAL_BUILD
AC_CANONICAL_HOST
AM_INIT_AUTOMAKE([gnu no-dist-gzip dist-bzip2])
AM_SILENT_RULES([yes])

# Checks for programs.
AC_PROG_CC
AM_PROG_AS
AM_PROG_LIBTOOL

######################################################################

dnl ------------
dnl Check CFLAGS, CC
dnl ------------
AC_ARG_WITH(cc,
	    AC_HELP_STRING([--with-cc],[Set CC for use as C compiler.]),
	    [CC="$with_cc"])

AC_ARG_WITH(cflags,
	    AC_HELP_STRING([--with-cflags],[Set CFLAGS for use by C compiler.]),
	    [CFLAGS="$with_cflags"])

AC_ARG_WITH(ldflags,
	    AC_HELP_STRING([--with-ldflags],[Set LDFLAGS for linking.]),
	    [LDFLAGS="$with_ldflags"])

######################################################################

AC_ARG_ENABLE(tests,
              AC_HELP_STRING([--enable-tests],[Enable unit tests]),
              [enable_tests=1],
              [enable_tests=0])

AM_CONDITIONAL(ENABLE_TESTS, test "$enable_tests" = "1")

AC_ARG_WITH(unix,
            AC_HELP_STRING([--with-unix],[Compile unix version of clib]),
	    [],
	    [case $host_os in
	      darwin* | linux*) with_unix=yes;;
	      *) with_unix=no;;
	      esac])

AM_CONDITIONAL(WITH_UNIX, test "$with_unix" = "yes")


## Enable 64-bit vector lengths
AC_ARG_WITH(vec64,
	    AC_HELP_STRING([--with-vec64],[Enable 64-bit vector lengths]),
            [with_vec64=1],
            [with_vec64=0])

AC_SUBST(VEC64,[-DCLIB_VEC64=${with_vec64}])

AC_CONFIG_FILES([Makefile])
AC_OUTPUT
tunnel's desintation IP # is unresolved - or resolves via the default route - which # which is a drop. # tx = self.create_stream_ip6(self.pg2, "5005::1", "4004::1") self.pg2.add_stream(tx) self.pg_enable_capture(self.pg_interfaces) self.pg_start() self.pg2.assert_nothing_captured( remark="GRE packets forwarded without DIP resolved") # # Add a route that resolves the tunnel's destination # route_tun_dst = VppIpRoute( self, "1002::1", 128, [VppRoutePath(self.pg2.remote_ip6, self.pg2.sw_if_index, proto=DpoProto.DPO_PROTO_IP6)], is_ip6=1) route_tun_dst.add_vpp_config() # # Send a packet stream that is routed into the tunnel # - packets are GRE encapped # self.vapi.cli("clear trace") tx = self.create_stream_ip6(self.pg2, "5005::1", "4004::1") self.pg2.add_stream(tx) self.pg_enable_capture(self.pg_interfaces) self.pg_start() rx = self.pg2.get_capture(len(tx)) self.verify_tunneled_6o6(self.pg2, rx, tx, self.pg2.local_ip6, "1002::1") # # Test decap. decapped packets go out pg1 # tx = self.create_tunnel_stream_6o6(self.pg2, "1002::1", self.pg2.local_ip6, "2001::1", self.pg1.remote_ip6) self.vapi.cli("clear trace") self.pg2.add_stream(tx) self.pg_enable_capture(self.pg_interfaces) self.pg_start() rx = self.pg1.get_capture(len(tx)) # # RX'd packet is UDP over IPv6, test the GRE header is gone. # self.assertFalse(rx[0].haslayer(GRE)) self.assertEqual(rx[0][IPv6].dst, self.pg1.remote_ip6) # # test case cleanup # route_tun_dst.remove_vpp_config() route_via_tun.remove_vpp_config() gre_if.remove_vpp_config() self.pg2.unconfig_ip6() self.pg1.unconfig_ip6() def test_gre_vrf(self): """ GRE tunnel VRF Tests """ # # Create an L3 GRE tunnel whose destination is in the non-default # table. The underlay is thus non-default - the overlay is still # the default. # - set it admin up # - assign an IP Addres # gre_if = VppGreInterface(self, self.pg1.local_ip4, "2.2.2.2", outer_fib_id=1) gre_if.add_vpp_config() gre_if.admin_up() gre_if.config_ip4() # # Add a route via the tunnel - in the overlay # route_via_tun = VppIpRoute(self, "9.9.9.9", 32, [VppRoutePath("0.0.0.0", gre_if.sw_if_index)]) route_via_tun.add_vpp_config() # # Add a route that resolves the tunnel's destination - in the # underlay table # route_tun_dst = VppIpRoute(self, "2.2.2.2", 32, table_id=1, paths=[VppRoutePath(self.pg1.remote_ip4, self.pg1.sw_if_index)]) route_tun_dst.add_vpp_config() # # Send a packet stream that is routed into the tunnel # packets are sent in on pg0 which is in the default table # - packets are GRE encapped # self.vapi.cli("clear trace") tx = self.create_stream_ip4(self.pg0, "5.5.5.5", "9.9.9.9") self.pg0.add_stream(tx) self.pg_enable_capture(self.pg_interfaces) self.pg_start() rx = self.pg1.get_capture(len(tx)) self.verify_tunneled_4o4(self.pg1, rx, tx, self.pg1.local_ip4, "2.2.2.2") # # Send tunneled packets that match the created tunnel and # are decapped and forwarded. This tests the decap lookup # does not happen in the encap table # self.vapi.cli("clear trace") tx = self.create_tunnel_stream_4o4(self.pg1, "2.2.2.2", self.pg1.local_ip4, self.pg0.local_ip4, self.pg0.remote_ip4) self.pg1.add_stream(tx) self.pg_enable_capture(self.pg_interfaces) self.pg_start() rx = self.pg0.get_capture(len(tx)) self.verify_decapped_4o4(self.pg0, rx, tx) # # Send tunneled packets that match the created tunnel and # but arrive on an interface that is not in the tunnel's # encap VRF, these are dropped # self.vapi.cli("clear trace") tx = self.create_tunnel_stream_4o4(self.pg2, "2.2.2.2", self.pg1.local_ip4, self.pg0.local_ip4, self.pg0.remote_ip4) self.pg1.add_stream(tx) self.pg_enable_capture(self.pg_interfaces) self.pg_start() self.pg0.assert_nothing_captured( remark="GRE decap packets in wrong VRF") # # test case cleanup # route_tun_dst.remove_vpp_config() route_via_tun.remove_vpp_config() gre_if.remove_vpp_config() def test_gre_l2(self): """ GRE tunnel L2 Tests """ # # Add routes to resolve the tunnel destinations # route_tun1_dst = VppIpRoute(self, "2.2.2.2", 32, [VppRoutePath(self.pg0.remote_ip4, self.pg0.sw_if_index)]) route_tun2_dst = VppIpRoute(self, "2.2.2.3", 32, [VppRoutePath(self.pg0.remote_ip4, self.pg0.sw_if_index)]) route_tun1_dst.add_vpp_config() route_tun2_dst.add_vpp_config() # # Create 2 L2 GRE tunnels and x-connect them # gre_if1 = VppGreInterface(self, self.pg0.local_ip4, "2.2.2.2", type=GreTunnelTypes.TT_TEB) gre_if2 = VppGreInterface(self, self.pg0.local_ip4, "2.2.2.3", type=GreTunnelTypes.TT_TEB) gre_if1.add_vpp_config() gre_if2.add_vpp_config() gre_if1.admin_up() gre_if2.admin_up() self.vapi.sw_interface_set_l2_xconnect(gre_if1.sw_if_index, gre_if2.sw_if_index, enable=1) self.vapi.sw_interface_set_l2_xconnect(gre_if2.sw_if_index, gre_if1.sw_if_index, enable=1) # # Send in tunnel encapped L2. expect out tunnel encapped L2 # in both directions # self.vapi.cli("clear trace") tx = self.create_tunnel_stream_l2o4(self.pg0, "2.2.2.2", self.pg0.local_ip4) self.pg0.add_stream(tx) self.pg_enable_capture(self.pg_interfaces) self.pg_start() rx = self.pg0.get_capture(len(tx)) self.verify_tunneled_l2o4(self.pg0, rx, tx, self.pg0.local_ip4, "2.2.2.3") self.vapi.cli("clear trace") tx = self.create_tunnel_stream_l2o4(self.pg0, "2.2.2.3", self.pg0.local_ip4) self.pg0.add_stream(tx) self.pg_enable_capture(self.pg_interfaces) self.pg_start() rx = self.pg0.get_capture(len(tx)) self.verify_tunneled_l2o4(self.pg0, rx, tx, self.pg0.local_ip4, "2.2.2.2") self.vapi.sw_interface_set_l2_xconnect(gre_if1.sw_if_index, gre_if2.sw_if_index, enable=0) self.vapi.sw_interface_set_l2_xconnect(gre_if2.sw_if_index, gre_if1.sw_if_index, enable=0) # # Create a VLAN sub-interfaces on the GRE TEB interfaces # then x-connect them # gre_if_11 = VppDot1QSubint(self, gre_if1, 11) gre_if_12 = VppDot1QSubint(self, gre_if2, 12) # gre_if_11.add_vpp_config() # gre_if_12.add_vpp_config() gre_if_11.admin_up() gre_if_12.admin_up() self.vapi.sw_interface_set_l2_xconnect(gre_if_11.sw_if_index, gre_if_12.sw_if_index, enable=1) self.vapi.sw_interface_set_l2_xconnect(gre_if_12.sw_if_index, gre_if_11.sw_if_index, enable=1) # # Configure both to pop thier respective VLAN tags, # so that during the x-coonect they will subsequently push # self.vapi.sw_interface_set_l2_tag_rewrite(gre_if_12.sw_if_index, L2_VTR_OP.L2_POP_1, 12) self.vapi.sw_interface_set_l2_tag_rewrite(gre_if_11.sw_if_index, L2_VTR_OP.L2_POP_1, 11) # # Send traffic in both directiond - expect the VLAN tags to # be swapped. # self.vapi.cli("clear trace") tx = self.create_tunnel_stream_vlano4(self.pg0, "2.2.2.2", self.pg0.local_ip4, 11) self.pg0.add_stream(tx) self.pg_enable_capture(self.pg_interfaces) self.pg_start() rx = self.pg0.get_capture(len(tx)) self.verify_tunneled_vlano4(self.pg0, rx, tx, self.pg0.local_ip4, "2.2.2.3", 12) self.vapi.cli("clear trace") tx = self.create_tunnel_stream_vlano4(self.pg0, "2.2.2.3", self.pg0.local_ip4, 12) self.pg0.add_stream(tx) self.pg_enable_capture(self.pg_interfaces) self.pg_start() rx = self.pg0.get_capture(len(tx)) self.verify_tunneled_vlano4(self.pg0, rx, tx, self.pg0.local_ip4, "2.2.2.2", 11) # # Cleanup Test resources # gre_if_11.remove_vpp_config() gre_if_12.remove_vpp_config() gre_if1.remove_vpp_config() gre_if2.remove_vpp_config() route_tun1_dst.add_vpp_config() route_tun2_dst.add_vpp_config() if __name__ == '__main__': unittest.main(testRunner=VppTestRunner)