X-Git-Url: https://gerrit.fd.io/r/gitweb?p=vpp.git;a=blobdiff_plain;f=test%2Ftest_gre.py;h=74dd5edcb085af073391b23b0e912a0d487b61f4;hp=4d40b3b64a1fe6076f6b3bb9d3505be12157edb6;hb=282872127;hpb=c0a93143412b4be7bba087bf633855aeeaee7c56 diff --git a/test/test_gre.py b/test/test_gre.py index 4d40b3b64a1..74dd5edcb08 100644 --- a/test/test_gre.py +++ b/test/test_gre.py @@ -1,28 +1,68 @@ -#!/usr/bin/env python +#!/usr/bin/env python3 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 import DpoProto -from vpp_ip_route import VppIpRoute, VppRoutePath, VppIpTable -from vpp_papi_provider import L2_VTR_OP +import scapy.compat 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 framework import VppTestCase, VppTestRunner +from vpp_sub_interface import L2_VTR_OP, VppDot1QSubint +from vpp_gre_interface import VppGreInterface +from vpp_teib import VppTeib +from vpp_ip import DpoProto +from vpp_ip_route import VppIpRoute, VppRoutePath, VppIpTable, FibPathProto from util import ppp, ppc +from vpp_papi import VppEnum + + +class TestGREInputNodes(VppTestCase): + """ GRE Input Nodes Test Case """ + def setUp(self): + super(TestGREInputNodes, self).setUp() -class GreTunnelTypes: - TT_L3 = 0 - TT_TEB = 1 - TT_ERSPAN = 2 + # create 3 pg interfaces - set one in a non-default table. + self.create_pg_interfaces(range(1)) + + for i in self.pg_interfaces: + i.admin_up() + i.config_ip4() + + def tearDown(self): + for i in self.pg_interfaces: + i.unconfig_ip4() + i.admin_down() + super(TestGREInputNodes, self).tearDown() + + def test_gre_input_node(self): + """ GRE gre input nodes not registerd unless configured """ + pkt = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / + IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) / + GRE()) + + self.pg0.add_stream(pkt) + self.pg_start() + # no tunnel created, gre-input not registered + err = self.statistics.get_counter( + '/err/ip4-local/unknown ip protocol')[0] + self.assertEqual(err, 1) + err_count = err + + # create gre tunnel + gre_if = VppGreInterface(self, self.pg0.local_ip4, "1.1.1.2") + gre_if.add_vpp_config() + + self.pg0.add_stream(pkt) + self.pg_start() + # tunnel created, gre-input registered + err = self.statistics.get_counter( + '/err/ip4-local/unknown ip protocol')[0] + # expect no new errors + self.assertEqual(err, err_count) class TestGRE(VppTestCase): @@ -32,11 +72,15 @@ class TestGRE(VppTestCase): def setUpClass(cls): super(TestGRE, cls).setUpClass() + @classmethod + def tearDownClass(cls): + super(TestGRE, cls).tearDownClass() + 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.create_pg_interfaces(range(5)) self.tbl = VppIpTable(self, 1) self.tbl.add_vpp_config() @@ -51,6 +95,10 @@ class TestGRE(VppTestCase): self.pg1.resolve_arp() self.pg2.config_ip6() self.pg2.resolve_ndp() + self.pg3.config_ip4() + self.pg3.resolve_arp() + self.pg4.config_ip4() + self.pg4.resolve_arp() def tearDown(self): for i in self.pg_interfaces: @@ -60,26 +108,28 @@ class TestGRE(VppTestCase): self.pg1.set_table_ip4(0) super(TestGRE, self).tearDown() - def create_stream_ip4(self, src_if, src_ip, dst_ip): + def create_stream_ip4(self, src_if, src_ip, dst_ip, dscp=0, ecn=0): pkts = [] + tos = (dscp << 2) | ecn 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) / + IP(src=src_ip, dst=dst_ip, tos=tos) / 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): + def create_stream_ip6(self, src_if, src_ip, dst_ip, dscp=0, ecn=0): pkts = [] + tc = (dscp << 2) | ecn 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) / + IPv6(src=src_ip, dst=dst_ip, tc=tc) / UDP(sport=1234, dport=1234) / Raw(payload)) info.data = p.copy() @@ -148,7 +198,8 @@ class TestGRE(VppTestCase): GRE() / Ether(dst=RandMAC('*:*:*:*:*:*'), src=RandMAC('*:*:*:*:*:*')) / - IP(src=str(RandIP()), dst=str(RandIP())) / + IP(src=scapy.compat.raw(RandIP()), + dst=scapy.compat.raw(RandIP())) / UDP(sport=1234, dport=1234) / Raw(payload)) info.data = p.copy() @@ -167,7 +218,8 @@ class TestGRE(VppTestCase): Ether(dst=RandMAC('*:*:*:*:*:*'), src=RandMAC('*:*:*:*:*:*')) / Dot1Q(vlan=vlan) / - IP(src=str(RandIP()), dst=str(RandIP())) / + IP(src=scapy.compat.raw(RandIP()), + dst=scapy.compat.raw(RandIP())) / UDP(sport=1234, dport=1234) / Raw(payload)) info.data = p.copy() @@ -175,9 +227,11 @@ class TestGRE(VppTestCase): return pkts def verify_tunneled_4o4(self, src_if, capture, sent, - tunnel_src, tunnel_dst): + tunnel_src, tunnel_dst, + dscp=0, ecn=0): self.assertEqual(len(capture), len(sent)) + tos = (dscp << 2) | ecn for i in range(len(capture)): try: @@ -189,6 +243,7 @@ class TestGRE(VppTestCase): self.assertEqual(rx_ip.src, tunnel_src) self.assertEqual(rx_ip.dst, tunnel_dst) + self.assertEqual(rx_ip.tos, tos) rx_gre = rx[GRE] rx_ip = rx_gre[IP] @@ -204,9 +259,11 @@ class TestGRE(VppTestCase): raise def verify_tunneled_6o6(self, src_if, capture, sent, - tunnel_src, tunnel_dst): + tunnel_src, tunnel_dst, + dscp=0, ecn=0): self.assertEqual(len(capture), len(sent)) + tc = (dscp << 2) | ecn for i in range(len(capture)): try: @@ -216,11 +273,66 @@ class TestGRE(VppTestCase): tx_ip = tx[IPv6] rx_ip = rx[IPv6] + self.assertEqual(rx_ip.src, tunnel_src) + self.assertEqual(rx_ip.dst, tunnel_dst) + self.assertEqual(rx_ip.tc, tc) + + rx_gre = GRE(scapy.compat.raw(rx_ip[IPv6].payload)) + rx_ip = rx_gre[IPv6] + + self.assertEqual(rx_ip.src, tx_ip.src) + self.assertEqual(rx_ip.dst, tx_ip.dst) + + except: + self.logger.error(ppp("Rx:", rx)) + self.logger.error(ppp("Tx:", tx)) + raise + + def verify_tunneled_4o6(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] + + rx_ip = rx[IPv6] + + self.assertEqual(rx_ip.src, tunnel_src) + self.assertEqual(rx_ip.dst, tunnel_dst) + + rx_gre = GRE(scapy.compat.raw(rx_ip[IPv6].payload)) + tx_ip = tx[IP] + rx_ip = rx_gre[IP] + + self.assertEqual(rx_ip.src, tx_ip.src) + self.assertEqual(rx_ip.dst, tx_ip.dst) + + except: + self.logger.error(ppp("Rx:", rx)) + self.logger.error(ppp("Tx:", tx)) + raise + + def verify_tunneled_6o4(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] + + rx_ip = rx[IP] + self.assertEqual(rx_ip.src, tunnel_src) self.assertEqual(rx_ip.dst, tunnel_dst) - rx_gre = GRE(str(rx_ip[IPv6].payload)) + rx_gre = GRE(scapy.compat.raw(rx_ip[IP].payload)) rx_ip = rx_gre[IPv6] + tx_ip = tx[IPv6] self.assertEqual(rx_ip.src, tx_ip.src) self.assertEqual(rx_ip.dst, tx_ip.dst) @@ -347,6 +459,28 @@ class TestGRE(VppTestCase): self.logger.error(ppp("Tx:", tx)) raise + def verify_decapped_6o6(self, src_if, capture, sent): + self.assertEqual(len(capture), len(sent)) + + for i in range(len(capture)): + try: + tx = sent[i] + rx = capture[i] + + tx_ip = tx[IPv6] + rx_ip = rx[IPv6] + tx_gre = tx[GRE] + tx_ip = tx_gre[IPv6] + + self.assertEqual(rx_ip.src, tx_ip.src) + self.assertEqual(rx_ip.dst, tx_ip.dst) + self.assertEqual(rx_ip.hlim + 1, tx_ip.hlim) + + except: + self.logger.error(ppp("Rx:", rx)) + self.logger.error(ppp("Tx:", tx)) + raise + def test_gre(self): """ GRE IPv4 tunnel Tests """ @@ -383,18 +517,13 @@ class TestGRE(VppTestCase): # # Send a packet stream that is routed into the tunnel - # - they are all dropped since the tunnel's desintation IP + # - they are all dropped since the tunnel's destintation IP # is unresolved - or resolves via the default route - which # which is a drop. # tx = self.create_stream_ip4(self.pg0, "5.5.5.5", "4.4.4.4") - self.pg0.add_stream(tx) - - self.pg_enable_capture(self.pg_interfaces) - self.pg_start() - self.pg0.assert_nothing_captured( - remark="GRE packets forwarded without DIP resolved") + self.send_and_assert_no_replies(self.pg0, tx) # # Add a route that resolves the tunnel's destination @@ -408,14 +537,8 @@ class TestGRE(VppTestCase): # Send a packet stream that is routed into the tunnel # - packets are GRE encapped # - self.vapi.cli("clear trace") tx = self.create_stream_ip4(self.pg0, "5.5.5.5", "4.4.4.4") - self.pg0.add_stream(tx) - - self.pg_enable_capture(self.pg_interfaces) - self.pg_start() - - rx = self.pg0.get_capture(len(tx)) + rx = self.send_and_expect(self.pg0, tx, self.pg0) self.verify_tunneled_4o4(self.pg0, rx, tx, self.pg0.local_ip4, "1.1.1.2") @@ -423,18 +546,12 @@ class TestGRE(VppTestCase): # Send tunneled packets that match the created tunnel and # are decapped and forwarded # - self.vapi.cli("clear trace") tx = self.create_tunnel_stream_4o4(self.pg0, "1.1.1.2", self.pg0.local_ip4, self.pg0.local_ip4, self.pg0.remote_ip4) - self.pg0.add_stream(tx) - - self.pg_enable_capture(self.pg_interfaces) - self.pg_start() - - rx = self.pg0.get_capture(len(tx)) + rx = self.send_and_expect(self.pg0, tx, self.pg0) self.verify_decapped_4o4(self.pg0, rx, tx) # @@ -446,12 +563,8 @@ class TestGRE(VppTestCase): self.pg0.local_ip4, self.pg0.local_ip4, self.pg0.remote_ip4) - self.pg0.add_stream(tx) - - self.pg_enable_capture(self.pg_interfaces) - self.pg_start() - - self.pg0.assert_nothing_captured( + self.send_and_assert_no_replies( + self.pg0, tx, remark="GRE packets forwarded despite no SRC address match") # @@ -465,19 +578,14 @@ class TestGRE(VppTestCase): # Send IPv6 tunnel encapslated packets # - dropped since IPv6 is not enabled on the tunnel # - self.vapi.cli("clear trace") tx = self.create_tunnel_stream_6o4(self.pg0, "1.1.1.2", self.pg0.local_ip4, self.pg0.local_ip6, self.pg0.remote_ip6) - self.pg0.add_stream(tx) - - self.pg_enable_capture(self.pg_interfaces) - self.pg_start() - - self.pg0.assert_nothing_captured(remark="IPv6 GRE packets forwarded " - "despite IPv6 not enabled on tunnel") + self.send_and_assert_no_replies(self.pg0, tx, + "IPv6 GRE packets forwarded " + "despite IPv6 not enabled on tunnel") # # Enable IPv6 on the tunnel @@ -488,25 +596,36 @@ class TestGRE(VppTestCase): # Send IPv6 tunnel encapslated packets # - forwarded since IPv6 is enabled on the tunnel # - self.vapi.cli("clear trace") tx = self.create_tunnel_stream_6o4(self.pg0, "1.1.1.2", self.pg0.local_ip4, self.pg0.local_ip6, self.pg0.remote_ip6) - self.pg0.add_stream(tx) + rx = self.send_and_expect(self.pg0, tx, self.pg0) + self.verify_decapped_6o4(self.pg0, rx, tx) - self.pg_enable_capture(self.pg_interfaces) - self.pg_start() + # + # Send v6 packets for v4 encap + # + route6_via_tun = VppIpRoute( + self, "2001::1", 128, + [VppRoutePath("::", + gre_if.sw_if_index, + proto=DpoProto.DPO_PROTO_IP6)]) + route6_via_tun.add_vpp_config() - rx = self.pg0.get_capture(len(tx)) - self.verify_decapped_6o4(self.pg0, rx, tx) + tx = self.create_stream_ip6(self.pg0, "2001::2", "2001::1") + rx = self.send_and_expect(self.pg0, tx, self.pg0) + + self.verify_tunneled_6o4(self.pg0, rx, tx, + self.pg0.local_ip4, "1.1.1.2") # # test case cleanup # route_tun_dst.remove_vpp_config() route_via_tun.remove_vpp_config() + route6_via_tun.remove_vpp_config() gre_if.remove_vpp_config() self.pg0.unconfig_ip6() @@ -523,60 +642,44 @@ class TestGRE(VppTestCase): # - assign an IP Address # - Add a route via the tunnel # - gre_if = VppGre6Interface(self, - self.pg2.local_ip6, - "1002::1") + gre_if = VppGreInterface(self, + self.pg2.local_ip6, + "1002::1") gre_if.add_vpp_config() gre_if.admin_up() gre_if.config_ip6() - route_via_tun = VppIpRoute( - self, "4004::1", 128, - [VppRoutePath("0::0", - gre_if.sw_if_index, - proto=DpoProto.DPO_PROTO_IP6)], - is_ip6=1) + route_via_tun = VppIpRoute(self, "4004::1", 128, + [VppRoutePath("0::0", + gre_if.sw_if_index)]) route_via_tun.add_vpp_config() # # Send a packet stream that is routed into the tunnel - # - they are all dropped since the tunnel's desintation IP + # - they are all dropped since the tunnel's destintation 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") + self.send_and_assert_no_replies( + self.pg2, tx, + "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 = VppIpRoute(self, "1002::1", 128, + [VppRoutePath(self.pg2.remote_ip6, + self.pg2.sw_if_index)]) 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)) + rx = self.send_and_expect(self.pg2, tx, self.pg2) self.verify_tunneled_6o6(self.pg2, rx, tx, self.pg2.local_ip6, "1002::1") @@ -588,12 +691,7 @@ class TestGRE(VppTestCase): 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 = self.send_and_expect(self.pg2, tx, self.pg1) # # RX'd packet is UDP over IPv6, test the GRE header is gone. @@ -601,11 +699,26 @@ class TestGRE(VppTestCase): self.assertFalse(rx[0].haslayer(GRE)) self.assertEqual(rx[0][IPv6].dst, self.pg1.remote_ip6) + # + # Send v4 over v6 + # + route4_via_tun = VppIpRoute(self, "1.1.1.1", 32, + [VppRoutePath("0.0.0.0", + gre_if.sw_if_index)]) + route4_via_tun.add_vpp_config() + + tx = self.create_stream_ip4(self.pg0, "1.1.1.2", "1.1.1.1") + rx = self.send_and_expect(self.pg0, tx, self.pg2) + + self.verify_tunneled_4o6(self.pg0, rx, tx, + self.pg2.local_ip6, "1002::1") + # # test case cleanup # route_tun_dst.remove_vpp_config() route_via_tun.remove_vpp_config() + route4_via_tun.remove_vpp_config() gre_if.remove_vpp_config() self.pg2.unconfig_ip6() @@ -614,6 +727,8 @@ class TestGRE(VppTestCase): def test_gre_vrf(self): """ GRE tunnel VRF Tests """ + e = VppEnum.vl_api_tunnel_encap_decap_flags_t + # # Create an L3 GRE tunnel whose destination is in the non-default # table. The underlay is thus non-default - the overlay is still @@ -621,9 +736,13 @@ class TestGRE(VppTestCase): # - 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 = VppGreInterface( + self, self.pg1.local_ip4, + "2.2.2.2", + outer_table_id=1, + flags=(e.TUNNEL_API_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP | + e.TUNNEL_API_ENCAP_DECAP_FLAG_ENCAP_COPY_ECN)) + gre_if.add_vpp_config() gre_if.admin_up() gre_if.config_ip4() @@ -651,15 +770,12 @@ class TestGRE(VppTestCase): # - 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)) + tx = self.create_stream_ip4(self.pg0, "5.5.5.5", "9.9.9.9", + dscp=5, ecn=3) + rx = self.send_and_expect(self.pg0, tx, self.pg1) self.verify_tunneled_4o4(self.pg1, rx, tx, - self.pg1.local_ip4, "2.2.2.2") + self.pg1.local_ip4, "2.2.2.2", + dscp=5, ecn=3) # # Send tunneled packets that match the created tunnel and @@ -672,32 +788,28 @@ class TestGRE(VppTestCase): 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)) + rx = self.send_and_expect(self.pg1, tx, self.pg0) self.verify_decapped_4o4(self.pg0, rx, tx) # - # Send tunneled packets that match the created tunnel and + # Send tunneled packets that match the created tunnel # but arrive on an interface that is not in the tunnel's - # encap VRF, these are dropped + # encap VRF, these are dropped. + # IP enable the interface so they aren't dropped due to + # IP not being enabled. # + self.pg2.config_ip4() 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() + rx = self.send_and_assert_no_replies( + self.pg2, tx, + "GRE decap packets in wrong VRF") - self.pg0.assert_nothing_captured( - remark="GRE decap packets in wrong VRF") + self.pg2.unconfig_ip4() # # test case cleanup @@ -727,10 +839,12 @@ class TestGRE(VppTestCase): # gre_if1 = VppGreInterface(self, self.pg0.local_ip4, "2.2.2.2", - type=GreTunnelTypes.TT_TEB) + type=(VppEnum.vl_api_gre_tunnel_type_t. + GRE_API_TUNNEL_TYPE_TEB)) gre_if2 = VppGreInterface(self, self.pg0.local_ip4, "2.2.2.3", - type=GreTunnelTypes.TT_TEB) + type=(VppEnum.vl_api_gre_tunnel_type_t. + GRE_API_TUNNEL_TYPE_TEB)) gre_if1.add_vpp_config() gre_if2.add_vpp_config() @@ -748,30 +862,18 @@ class TestGRE(VppTestCase): # 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)) + rx = self.send_and_expect(self.pg0, tx, self.pg0) 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)) + rx = self.send_and_expect(self.pg0, tx, self.pg0) self.verify_tunneled_l2o4(self.pg0, rx, tx, self.pg0.local_ip4, "2.2.2.2") @@ -807,44 +909,32 @@ class TestGRE(VppTestCase): # 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) + self.vapi.l2_interface_vlan_tag_rewrite( + sw_if_index=gre_if_12.sw_if_index, vtr_op=L2_VTR_OP.L2_POP_1, + push_dot1q=12) + self.vapi.l2_interface_vlan_tag_rewrite( + sw_if_index=gre_if_11.sw_if_index, vtr_op=L2_VTR_OP.L2_POP_1, + push_dot1q=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)) + rx = self.send_and_expect(self.pg0, tx, self.pg0) 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)) + rx = self.send_and_expect(self.pg0, tx, self.pg0) self.verify_tunneled_vlano4(self.pg0, rx, tx, self.pg0.local_ip4, "2.2.2.2", @@ -860,6 +950,263 @@ class TestGRE(VppTestCase): route_tun1_dst.add_vpp_config() route_tun2_dst.add_vpp_config() + def test_gre_loop(self): + """ GRE tunnel loop Tests """ + + # + # Create an L3 GRE tunnel. + # - set it admin up + # - assign an IP Addres + # + gre_if = VppGreInterface(self, + self.pg0.local_ip4, + "1.1.1.2") + gre_if.add_vpp_config() + gre_if.admin_up() + gre_if.config_ip4() + + # + # add a route to the tunnel's destination that points + # through the tunnel, hence forming a loop in the forwarding + # graph + # + route_dst = VppIpRoute(self, "1.1.1.2", 32, + [VppRoutePath("0.0.0.0", + gre_if.sw_if_index)]) + route_dst.add_vpp_config() + + # + # packets to the tunnels destination should be dropped + # + tx = self.create_stream_ip4(self.pg0, "1.1.1.1", "1.1.1.2") + self.send_and_assert_no_replies(self.pg2, tx) + + self.logger.info(self.vapi.ppcli("sh adj 7")) + + # + # break the loop + # + route_dst.modify([VppRoutePath(self.pg1.remote_ip4, + self.pg1.sw_if_index)]) + route_dst.add_vpp_config() + + rx = self.send_and_expect(self.pg0, tx, self.pg1) + + # + # a good route throught the tunnel to check it restacked + # + route_via_tun_2 = VppIpRoute(self, "2.2.2.2", 32, + [VppRoutePath("0.0.0.0", + gre_if.sw_if_index)]) + route_via_tun_2.add_vpp_config() + + tx = self.create_stream_ip4(self.pg0, "2.2.2.3", "2.2.2.2") + rx = self.send_and_expect(self.pg0, tx, self.pg1) + self.verify_tunneled_4o4(self.pg1, rx, tx, + self.pg0.local_ip4, "1.1.1.2") + + # + # cleanup + # + route_via_tun_2.remove_vpp_config() + gre_if.remove_vpp_config() + + def test_mgre(self): + """ mGRE IPv4 tunnel Tests """ + + for itf in self.pg_interfaces[3:]: + # + # one underlay nh for each overlay/tunnel peer + # + itf.generate_remote_hosts(4) + itf.configure_ipv4_neighbors() + + # + # Create an L3 GRE tunnel. + # - set it admin up + # - assign an IP Addres + # - Add a route via the tunnel + # + gre_if = VppGreInterface(self, + itf.local_ip4, + "0.0.0.0", + mode=(VppEnum.vl_api_tunnel_mode_t. + TUNNEL_API_MODE_MP)) + gre_if.add_vpp_config() + gre_if.admin_up() + gre_if.config_ip4() + gre_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(gre_if._remote_hosts[ii].ip4, + gre_if.sw_if_index)]) + route_via_tun.add_vpp_config() + + # + # Add a TEIB entry resolves the peer + # + teib = VppTeib(self, gre_if, + gre_if._remote_hosts[ii].ip4, + itf._remote_hosts[ii].ip4) + teib.add_vpp_config() + + # + # Send a packet stream that is routed into the tunnel + # - packets are GRE encapped + # + tx_e = self.create_stream_ip4(self.pg0, "5.5.5.5", route_addr) + rx = self.send_and_expect(self.pg0, tx_e, itf) + self.verify_tunneled_4o4(self.pg0, rx, tx_e, + itf.local_ip4, + itf._remote_hosts[ii].ip4) + + tx_i = self.create_tunnel_stream_4o4(self.pg0, + itf._remote_hosts[ii].ip4, + itf.local_ip4, + self.pg0.local_ip4, + self.pg0.remote_ip4) + rx = self.send_and_expect(self.pg0, tx_i, self.pg0) + self.verify_decapped_4o4(self.pg0, rx, tx_i) + + # + # 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) + self.verify_tunneled_4o4(self.pg0, rx, tx_e, + itf.local_ip4, + itf._remote_hosts[ii].ip4) + rx = self.send_and_expect(self.pg0, tx_i, self.pg0) + self.verify_decapped_4o4(self.pg0, rx, tx_i) + + gre_if.admin_down() + gre_if.unconfig_ip4() + + def test_mgre6(self): + """ mGRE IPv6 tunnel Tests """ + + self.pg0.config_ip6() + self.pg0.resolve_ndp() + + e = VppEnum.vl_api_tunnel_encap_decap_flags_t + + for itf in self.pg_interfaces[3:]: + # + # one underlay nh for each overlay/tunnel peer + # + itf.config_ip6() + itf.generate_remote_hosts(4) + itf.configure_ipv6_neighbors() + + # + # Create an L3 GRE tunnel. + # - set it admin up + # - assign an IP Addres + # - Add a route via the tunnel + # + gre_if = VppGreInterface( + self, + itf.local_ip6, + "::", + mode=(VppEnum.vl_api_tunnel_mode_t. + TUNNEL_API_MODE_MP), + flags=e.TUNNEL_API_ENCAP_DECAP_FLAG_ENCAP_COPY_DSCP) + + gre_if.add_vpp_config() + gre_if.admin_up() + gre_if.config_ip6() + gre_if.generate_remote_hosts(4) + + # + # for-each peer + # + for ii in range(1, 4): + route_addr = "4::%d" % ii + + # + # Add a TEIB entry resolves the peer + # + teib = VppTeib(self, gre_if, + gre_if._remote_hosts[ii].ip6, + itf._remote_hosts[ii].ip6) + teib.add_vpp_config() + + # + # route traffic via the peer + # + route_via_tun = VppIpRoute( + self, route_addr, 128, + [VppRoutePath(gre_if._remote_hosts[ii].ip6, + gre_if.sw_if_index)]) + route_via_tun.add_vpp_config() + + # + # Send a packet stream that is routed into the tunnel + # - packets are GRE encapped + # + tx_e = self.create_stream_ip6(self.pg0, "5::5", route_addr, + dscp=2, ecn=1) + rx = self.send_and_expect(self.pg0, tx_e, itf) + self.verify_tunneled_6o6(self.pg0, rx, tx_e, + itf.local_ip6, + itf._remote_hosts[ii].ip6, + dscp=2) + tx_i = self.create_tunnel_stream_6o6(self.pg0, + itf._remote_hosts[ii].ip6, + itf.local_ip6, + self.pg0.local_ip6, + self.pg0.remote_ip6) + rx = self.send_and_expect(self.pg0, tx_i, self.pg0) + self.verify_decapped_6o6(self.pg0, rx, tx_i) + + # + # delete and re-add the TEIB + # + teib.remove_vpp_config() + self.send_and_assert_no_replies(self.pg0, tx_e) + + teib.add_vpp_config() + rx = self.send_and_expect(self.pg0, tx_e, itf) + self.verify_tunneled_6o6(self.pg0, rx, tx_e, + itf.local_ip6, + itf._remote_hosts[ii].ip6, + dscp=2) + rx = self.send_and_expect(self.pg0, tx_i, self.pg0) + self.verify_decapped_6o6(self.pg0, rx, tx_i) + + gre_if.admin_down() + gre_if.unconfig_ip4() + itf.unconfig_ip6() + self.pg0.unconfig_ip6() + if __name__ == '__main__': unittest.main(testRunner=VppTestRunner)