+class TestIPNull(VppTestCase):
+ """ IPv4 routes via NULL """
+
+ def setUp(self):
+ super(TestIPNull, self).setUp()
+
+ # create 2 pg interfaces
+ self.create_pg_interfaces(range(1))
+
+ for i in self.pg_interfaces:
+ i.admin_up()
+ i.config_ip4()
+ i.resolve_arp()
+
+ def tearDown(self):
+ super(TestIPNull, self).tearDown()
+ for i in self.pg_interfaces:
+ i.unconfig_ip4()
+ i.admin_down()
+
+ def test_ip_null(self):
+ """ IP NULL route """
+
+ #
+ # A route via IP NULL that will reply with ICMP unreachables
+ #
+ ip_unreach = VppIpRoute(self, "10.0.0.1", 32, [], is_unreach=1)
+ ip_unreach.add_vpp_config()
+
+ p_unreach = (Ether(src=self.pg0.remote_mac,
+ dst=self.pg0.local_mac) /
+ IP(src=self.pg0.remote_ip4, dst="10.0.0.1") /
+ UDP(sport=1234, dport=1234) /
+ Raw('\xa5' * 100))
+
+ self.pg0.add_stream(p_unreach)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ rx = self.pg0.get_capture(1)
+ rx = rx[0]
+ icmp = rx[ICMP]
+
+ self.assertEqual(icmptypes[icmp.type], "dest-unreach")
+ self.assertEqual(icmpcodes[icmp.type][icmp.code], "host-unreachable")
+ self.assertEqual(icmp.src, self.pg0.remote_ip4)
+ self.assertEqual(icmp.dst, "10.0.0.1")
+
+ #
+ # ICMP replies are rate limited. so sit and spin.
+ #
+ self.sleep(1)
+
+ #
+ # A route via IP NULL that will reply with ICMP prohibited
+ #
+ ip_prohibit = VppIpRoute(self, "10.0.0.2", 32, [], is_prohibit=1)
+ ip_prohibit.add_vpp_config()
+
+ p_prohibit = (Ether(src=self.pg0.remote_mac,
+ dst=self.pg0.local_mac) /
+ IP(src=self.pg0.remote_ip4, dst="10.0.0.2") /
+ UDP(sport=1234, dport=1234) /
+ Raw('\xa5' * 100))
+
+ self.pg0.add_stream(p_prohibit)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ rx = self.pg0.get_capture(1)
+
+ rx = rx[0]
+ icmp = rx[ICMP]
+
+ self.assertEqual(icmptypes[icmp.type], "dest-unreach")
+ self.assertEqual(icmpcodes[icmp.type][icmp.code], "host-prohibited")
+ self.assertEqual(icmp.src, self.pg0.remote_ip4)
+ self.assertEqual(icmp.dst, "10.0.0.2")
+
+
+class TestIPDisabled(VppTestCase):
+ """ IPv4 disabled """
+
+ def setUp(self):
+ super(TestIPDisabled, self).setUp()
+
+ # create 2 pg interfaces
+ self.create_pg_interfaces(range(2))
+
+ # PG0 is IP enalbed
+ self.pg0.admin_up()
+ self.pg0.config_ip4()
+ self.pg0.resolve_arp()
+
+ # PG 1 is not IP enabled
+ self.pg1.admin_up()
+
+ def tearDown(self):
+ super(TestIPDisabled, self).tearDown()
+ for i in self.pg_interfaces:
+ i.unconfig_ip4()
+ i.admin_down()
+
+ def send_and_assert_no_replies(self, intf, pkts, remark):
+ intf.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ for i in self.pg_interfaces:
+ i.get_capture(0)
+ i.assert_nothing_captured(remark=remark)
+
+ def test_ip_disabled(self):
+ """ IP Disabled """
+
+ #
+ # An (S,G).
+ # one accepting interface, pg0, 2 forwarding interfaces
+ #
+ route_232_1_1_1 = VppIpMRoute(
+ self,
+ "0.0.0.0",
+ "232.1.1.1", 32,
+ MRouteEntryFlags.MFIB_ENTRY_FLAG_NONE,
+ [VppMRoutePath(self.pg1.sw_if_index,
+ MRouteItfFlags.MFIB_ITF_FLAG_ACCEPT),
+ VppMRoutePath(self.pg0.sw_if_index,
+ MRouteItfFlags.MFIB_ITF_FLAG_FORWARD)])
+ route_232_1_1_1.add_vpp_config()
+
+ pu = (Ether(src=self.pg1.remote_mac,
+ dst=self.pg1.local_mac) /
+ IP(src="10.10.10.10", dst=self.pg0.remote_ip4) /
+ UDP(sport=1234, dport=1234) /
+ Raw('\xa5' * 100))
+ pm = (Ether(src=self.pg1.remote_mac,
+ dst=self.pg1.local_mac) /
+ IP(src="10.10.10.10", dst="232.1.1.1") /
+ UDP(sport=1234, dport=1234) /
+ Raw('\xa5' * 100))
+
+ #
+ # PG1 does not forward IP traffic
+ #
+ self.send_and_assert_no_replies(self.pg1, pu, "IP disabled")
+ self.send_and_assert_no_replies(self.pg1, pm, "IP disabled")
+
+ #
+ # IP enable PG1
+ #
+ self.pg1.config_ip4()
+
+ #
+ # Now we get packets through
+ #
+ self.pg1.add_stream(pu)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ rx = self.pg0.get_capture(1)
+
+ self.pg1.add_stream(pm)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ rx = self.pg0.get_capture(1)
+
+ #
+ # Disable PG1
+ #
+ self.pg1.unconfig_ip4()
+
+ #
+ # PG1 does not forward IP traffic
+ #
+ self.send_and_assert_no_replies(self.pg1, pu, "IP disabled")
+ self.send_and_assert_no_replies(self.pg1, pm, "IP disabled")
+
+