X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=test%2Ftest_gre.py;h=85ef88fb25ed1f9f32d926099387c69c99840e15;hb=2e1c8967faf4e9f7b45471df02e4e5b07fbb520a;hp=cd898061fa21e181e8077c24b4ca75c1cdb1fe50;hpb=743ee3e12531ec3c6ba2e2add694dde3361b0e03;p=vpp.git diff --git a/test/test_gre.py b/test/test_gre.py index cd898061fa2..85ef88fb25e 100644 --- a/test/test_gre.py +++ b/test/test_gre.py @@ -1,21 +1,19 @@ #!/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 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, VppGre6Interface +from vpp_ip import DpoProto +from vpp_ip_route import VppIpRoute, VppRoutePath, VppIpTable from util import ppp, ppc @@ -148,7 +146,8 @@ 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 +166,8 @@ 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() @@ -219,7 +219,7 @@ class TestGRE(VppTestCase): 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[IPv6].payload)) rx_ip = rx_gre[IPv6] self.assertEqual(rx_ip.src, tx_ip.src) @@ -245,7 +245,7 @@ class TestGRE(VppTestCase): 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[IPv6].payload)) tx_ip = tx[IP] rx_ip = rx_gre[IP] @@ -272,7 +272,7 @@ class TestGRE(VppTestCase): self.assertEqual(rx_ip.src, tunnel_src) self.assertEqual(rx_ip.dst, tunnel_dst) - rx_gre = GRE(str(rx_ip[IP].payload)) + rx_gre = GRE(scapy.compat.raw(rx_ip[IP].payload)) rx_ip = rx_gre[IPv6] tx_ip = tx[IPv6] @@ -437,18 +437,13 @@ 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 @@ -462,14 +457,8 @@ 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") @@ -477,18 +466,12 @@ 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) # @@ -500,12 +483,8 @@ 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") # @@ -519,19 +498,14 @@ 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 @@ -542,18 +516,12 @@ 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) - - 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_6o4(self.pg0, rx, tx) # @@ -613,18 +581,14 @@ 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_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 @@ -641,14 +605,8 @@ 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_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") @@ -660,12 +618,7 @@ 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. @@ -739,12 +692,7 @@ class TestGRE(VppTestCase): # 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)) + 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") @@ -759,12 +707,7 @@ 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) # @@ -781,13 +724,9 @@ class TestGRE(VppTestCase): self.pg1.local_ip4, self.pg0.local_ip4, self.pg0.remote_ip4) - self.pg2.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") + rx = self.send_and_assert_no_replies( + self.pg2, tx, + "GRE decap packets in wrong VRF") self.pg2.unconfig_ip4() @@ -840,30 +779,18 @@ 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") @@ -899,44 +826,32 @@ 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", @@ -952,6 +867,67 @@ 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() + if __name__ == '__main__': unittest.main(testRunner=VppTestRunner)