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(str(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[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)
+
+ except:
+ self.logger.error(ppp("Rx:", rx))
+ self.logger.error(ppp("Tx:", tx))
+ raise
+
def verify_tunneled_l2o4(self, src_if, capture, sent,
tunnel_src, tunnel_dst):
self.assertEqual(len(capture), len(sent))
# 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
# 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")
# 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)
#
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")
#
# 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
# 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)
+
+ #
+ # 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)],
+ is_ip6=1)
+ route6_via_tun.add_vpp_config()
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
+ tx = self.create_stream_ip6(self.pg0, "2001::2", "2001::1")
+ rx = self.send_and_expect(self.pg0, tx, self.pg0)
- rx = self.pg0.get_capture(len(tx))
- self.verify_decapped_6o4(self.pg0, rx, tx)
+ 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()
# 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
# 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")
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.
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()
#
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")
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
# 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")
# 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",
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)
Code Review / vpp.git / blobdiff