tests: move fib tests to src/vnet/fib/test

- Refactor make test code to be co-located with
  the vpp feature source code

Type: test

Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
Change-Id: I0529eb51b5a6bc2a5f1a49ee9d3320908ad1dba9

2 files changed, 456 insertions, 0 deletions

diff --git a/src/vnet/fib/test/test_dvr.py b/src/vnet/fib/test/test_dvr.py
new file mode 100644
index 00000000000..8531b8553ca
--- /dev/null
+++ b/src/vnet/fib/test/test_dvr.py
@@ -0,0 +1,410 @@
+#!/usr/bin/env python3
+import unittest
+
+from framework import VppTestCase, VppTestRunner
+from vpp_ip_route import VppIpRoute, VppRoutePath, FibPathType
+from vpp_l2 import L2_PORT_TYPE
+from vpp_sub_interface import L2_VTR_OP, VppDot1QSubint
+from vpp_acl import AclRule, VppAcl, VppAclInterface
+
+from scapy.packet import Raw
+from scapy.layers.l2 import Ether, Dot1Q
+from scapy.layers.inet import IP, UDP
+from socket import AF_INET, inet_pton
+from ipaddress import IPv4Network
+
+NUM_PKTS = 67
+
+
+class TestDVR(VppTestCase):
+    """ Distributed Virtual Router """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestDVR, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestDVR, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestDVR, self).setUp()
+
+        self.create_pg_interfaces(range(4))
+        self.create_loopback_interfaces(1)
+
+        for i in self.pg_interfaces:
+            i.admin_up()
+
+        self.loop0.config_ip4()
+
+    def tearDown(self):
+        for i in self.pg_interfaces:
+            i.admin_down()
+        self.loop0.unconfig_ip4()
+
+        super(TestDVR, self).tearDown()
+
+    def assert_same_mac_addr(self, tx, rx):
+        t_eth = tx[Ether]
+        for p in rx:
+            r_eth = p[Ether]
+            self.assertEqual(t_eth.src, r_eth.src)
+            self.assertEqual(t_eth.dst, r_eth.dst)
+
+    def assert_has_vlan_tag(self, tag, rx):
+        for p in rx:
+            r_1q = p[Dot1Q]
+            self.assertEqual(tag, r_1q.vlan)
+
+    def assert_has_no_tag(self, rx):
+        for p in rx:
+            self.assertFalse(p.haslayer(Dot1Q))
+
+    def test_dvr(self):
+        """ Distributed Virtual Router """
+
+        #
+        # A packet destined to an IP address that is L2 bridged via
+        # a non-tag interface
+        #
+        ip_non_tag_bridged = "10.10.10.10"
+        ip_tag_bridged = "10.10.10.11"
+        any_src_addr = "1.1.1.1"
+
+        pkt_no_tag = (Ether(src=self.pg0.remote_mac,
+                            dst=self.loop0.local_mac) /
+                      IP(src=any_src_addr,
+                         dst=ip_non_tag_bridged) /
+                      UDP(sport=1234, dport=1234) /
+                      Raw(b'\xa5' * 100))
+        pkt_tag = (Ether(src=self.pg0.remote_mac,
+                         dst=self.loop0.local_mac) /
+                   IP(src=any_src_addr,
+                      dst=ip_tag_bridged) /
+                   UDP(sport=1234, dport=1234) /
+                   Raw(b'\xa5' * 100))
+
+        #
+        # Two sub-interfaces so we can test VLAN tag push/pop
+        #
+        sub_if_on_pg2 = VppDot1QSubint(self, self.pg2, 92)
+        sub_if_on_pg3 = VppDot1QSubint(self, self.pg3, 93)
+        sub_if_on_pg2.admin_up()
+        sub_if_on_pg3.admin_up()
+
+        #
+        # Put all the interfaces into a new bridge domain
+        #
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=self.pg0.sw_if_index, bd_id=1)
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=self.pg1.sw_if_index, bd_id=1)
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=sub_if_on_pg2.sw_if_index, bd_id=1)
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=sub_if_on_pg3.sw_if_index, bd_id=1)
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=self.loop0.sw_if_index, bd_id=1,
+            port_type=L2_PORT_TYPE.BVI)
+
+        self.vapi.l2_interface_vlan_tag_rewrite(
+            sw_if_index=sub_if_on_pg2.sw_if_index, vtr_op=L2_VTR_OP.L2_POP_1,
+            push_dot1q=92)
+        self.vapi.l2_interface_vlan_tag_rewrite(
+            sw_if_index=sub_if_on_pg3.sw_if_index, vtr_op=L2_VTR_OP.L2_POP_1,
+            push_dot1q=93)
+
+        #
+        # Add routes to bridge the traffic via a tagged an nontagged interface
+        #
+        route_no_tag = VppIpRoute(
+            self, ip_non_tag_bridged, 32,
+            [VppRoutePath("0.0.0.0",
+                          self.pg1.sw_if_index,
+                          type=FibPathType.FIB_PATH_TYPE_DVR)])
+        route_no_tag.add_vpp_config()
+
+        #
+        # Inject the packet that arrives and leaves on a non-tagged interface
+        # Since it's 'bridged' expect that the MAC headed is unchanged.
+        #
+        rx = self.send_and_expect(self.pg0, pkt_no_tag * NUM_PKTS, self.pg1)
+        self.assert_same_mac_addr(pkt_no_tag, rx)
+        self.assert_has_no_tag(rx)
+
+        #
+        # Add routes to bridge the traffic via a tagged interface
+        #
+        route_with_tag = VppIpRoute(
+            self, ip_tag_bridged, 32,
+            [VppRoutePath("0.0.0.0",
+                          sub_if_on_pg3.sw_if_index,
+                          type=FibPathType.FIB_PATH_TYPE_DVR)])
+        route_with_tag.add_vpp_config()
+
+        #
+        # Inject the packet that arrives non-tag and leaves on a tagged
+        # interface
+        #
+        rx = self.send_and_expect(self.pg0, pkt_tag * NUM_PKTS, self.pg3)
+        self.assert_same_mac_addr(pkt_tag, rx)
+        self.assert_has_vlan_tag(93, rx)
+
+        #
+        # Tag to tag
+        #
+        pkt_tag_to_tag = (Ether(src=self.pg2.remote_mac,
+                                dst=self.loop0.local_mac) /
+                          Dot1Q(vlan=92) /
+                          IP(src=any_src_addr,
+                             dst=ip_tag_bridged) /
+                          UDP(sport=1234, dport=1234) /
+                          Raw(b'\xa5' * 100))
+
+        rx = self.send_and_expect(self.pg2,
+                                  pkt_tag_to_tag * NUM_PKTS,
+                                  self.pg3)
+        self.assert_same_mac_addr(pkt_tag_to_tag, rx)
+        self.assert_has_vlan_tag(93, rx)
+
+        #
+        # Tag to non-Tag
+        #
+        pkt_tag_to_non_tag = (Ether(src=self.pg2.remote_mac,
+                                    dst=self.loop0.local_mac) /
+                              Dot1Q(vlan=92) /
+                              IP(src=any_src_addr,
+                                 dst=ip_non_tag_bridged) /
+                              UDP(sport=1234, dport=1234) /
+                              Raw(b'\xa5' * 100))
+
+        rx = self.send_and_expect(self.pg2,
+                                  pkt_tag_to_non_tag * NUM_PKTS,
+                                  self.pg1)
+        self.assert_same_mac_addr(pkt_tag_to_tag, rx)
+        self.assert_has_no_tag(rx)
+
+        #
+        # Add an output L3 ACL that will block the traffic
+        #
+        rule_1 = AclRule(is_permit=0, proto=17, ports=1234,
+                         src_prefix=IPv4Network((any_src_addr, 32)),
+                         dst_prefix=IPv4Network((ip_non_tag_bridged, 32)))
+        acl = VppAcl(self, rules=[rule_1])
+        acl.add_vpp_config()
+
+        #
+        # Apply the ACL on the output interface
+        #
+        acl_if1 = VppAclInterface(self, sw_if_index=self.pg1.sw_if_index,
+                                  n_input=0, acls=[acl])
+        acl_if1.add_vpp_config()
+
+        #
+        # Send packet's that should match the ACL and be dropped
+        #
+        rx = self.send_and_assert_no_replies(self.pg2,
+                                             pkt_tag_to_non_tag * NUM_PKTS)
+
+        #
+        # cleanup
+        #
+        acl_if1.remove_vpp_config()
+        acl.remove_vpp_config()
+
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=self.pg0.sw_if_index, bd_id=1, enable=0)
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=self.pg1.sw_if_index, bd_id=1, enable=0)
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=sub_if_on_pg2.sw_if_index, bd_id=1, enable=0)
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=sub_if_on_pg3.sw_if_index, bd_id=1, enable=0)
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=self.loop0.sw_if_index, bd_id=1,
+            port_type=L2_PORT_TYPE.BVI, enable=0)
+
+        #
+        # Do a FIB dump to make sure the paths are correctly reported as DVR
+        #
+        routes = self.vapi.ip_route_dump(0)
+
+        for r in routes:
+            if (ip_tag_bridged == str(r.route.prefix.network_address)):
+                self.assertEqual(r.route.paths[0].sw_if_index,
+                                 sub_if_on_pg3.sw_if_index)
+                self.assertEqual(r.route.paths[0].type,
+                                 FibPathType.FIB_PATH_TYPE_DVR)
+            if (ip_non_tag_bridged == str(r.route.prefix.network_address)):
+                self.assertEqual(r.route.paths[0].sw_if_index,
+                                 self.pg1.sw_if_index)
+                self.assertEqual(r.route.paths[0].type,
+                                 FibPathType.FIB_PATH_TYPE_DVR)
+
+        #
+        # the explicit route delete is require so it happens before
+        # the sbu-interface delete. subinterface delete is required
+        # because that object type does not use the object registry
+        #
+        route_no_tag.remove_vpp_config()
+        route_with_tag.remove_vpp_config()
+        sub_if_on_pg3.remove_vpp_config()
+        sub_if_on_pg2.remove_vpp_config()
+
+    def test_l2_emulation(self):
+        """ L2 Emulation """
+
+        #
+        # non distinct L3 packets, in the tag/non-tag combos
+        #
+        pkt_no_tag = (Ether(src=self.pg0.remote_mac,
+                            dst=self.pg1.remote_mac) /
+                      IP(src="2.2.2.2",
+                         dst="1.1.1.1") /
+                      UDP(sport=1234, dport=1234) /
+                      Raw(b'\xa5' * 100))
+        pkt_to_tag = (Ether(src=self.pg0.remote_mac,
+                            dst=self.pg2.remote_mac) /
+                      IP(src="2.2.2.2",
+                         dst="1.1.1.2") /
+                      UDP(sport=1234, dport=1234) /
+                      Raw(b'\xa5' * 100))
+        pkt_from_tag = (Ether(src=self.pg3.remote_mac,
+                              dst=self.pg2.remote_mac) /
+                        Dot1Q(vlan=93) /
+                        IP(src="2.2.2.2",
+                           dst="1.1.1.1") /
+                        UDP(sport=1234, dport=1234) /
+                        Raw(b'\xa5' * 100))
+        pkt_from_to_tag = (Ether(src=self.pg3.remote_mac,
+                                 dst=self.pg2.remote_mac) /
+                           Dot1Q(vlan=93) /
+                           IP(src="2.2.2.2",
+                              dst="1.1.1.2") /
+                           UDP(sport=1234, dport=1234) /
+                           Raw(b'\xa5' * 100))
+        pkt_bcast = (Ether(src=self.pg0.remote_mac,
+                           dst="ff:ff:ff:ff:ff:ff") /
+                     IP(src="2.2.2.2",
+                        dst="255.255.255.255") /
+                     UDP(sport=1234, dport=1234) /
+                     Raw(b'\xa5' * 100))
+
+        #
+        # A couple of sub-interfaces for tags
+        #
+        sub_if_on_pg2 = VppDot1QSubint(self, self.pg2, 92)
+        sub_if_on_pg3 = VppDot1QSubint(self, self.pg3, 93)
+        sub_if_on_pg2.admin_up()
+        sub_if_on_pg3.admin_up()
+
+        #
+        # Put all the interfaces into a new bridge domain
+        #
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=self.pg0.sw_if_index, bd_id=1)
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=self.pg1.sw_if_index, bd_id=1)
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=sub_if_on_pg2.sw_if_index, bd_id=1)
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=sub_if_on_pg3.sw_if_index, bd_id=1)
+        self.vapi.l2_interface_vlan_tag_rewrite(
+            sw_if_index=sub_if_on_pg2.sw_if_index, vtr_op=L2_VTR_OP.L2_POP_1,
+            push_dot1q=92)
+        self.vapi.l2_interface_vlan_tag_rewrite(
+            sw_if_index=sub_if_on_pg3.sw_if_index, vtr_op=L2_VTR_OP.L2_POP_1,
+            push_dot1q=93)
+
+        #
+        # Disable UU flooding, learning and ARP termination. makes this test
+        # easier as unicast packets are dropped if not extracted.
+        #
+        self.vapi.bridge_flags(bd_id=1, is_set=0,
+                               flags=(1 << 0) | (1 << 3) | (1 << 4))
+
+        #
+        # Add a DVR route to steer traffic at L3
+        #
+        route_1 = VppIpRoute(
+            self, "1.1.1.1", 32,
+            [VppRoutePath("0.0.0.0",
+                          self.pg1.sw_if_index,
+                          type=FibPathType.FIB_PATH_TYPE_DVR)])
+        route_2 = VppIpRoute(
+            self, "1.1.1.2", 32,
+            [VppRoutePath("0.0.0.0",
+                          sub_if_on_pg2.sw_if_index,
+                          type=FibPathType.FIB_PATH_TYPE_DVR)])
+        route_1.add_vpp_config()
+        route_2.add_vpp_config()
+
+        #
+        # packets are dropped because bridge does not flood unknown unicast
+        #
+        self.send_and_assert_no_replies(self.pg0, pkt_no_tag)
+
+        #
+        # Enable L3 extraction on pgs
+        #
+        self.vapi.l2_emulation(self.pg0.sw_if_index)
+        self.vapi.l2_emulation(self.pg1.sw_if_index)
+        self.vapi.l2_emulation(sub_if_on_pg2.sw_if_index)
+        self.vapi.l2_emulation(sub_if_on_pg3.sw_if_index)
+
+        #
+        # now we expect the packet forward according to the DVR route
+        #
+        rx = self.send_and_expect(self.pg0, pkt_no_tag * NUM_PKTS, self.pg1)
+        self.assert_same_mac_addr(pkt_no_tag, rx)
+        self.assert_has_no_tag(rx)
+
+        rx = self.send_and_expect(self.pg0, pkt_to_tag * NUM_PKTS, self.pg2)
+        self.assert_same_mac_addr(pkt_to_tag, rx)
+        self.assert_has_vlan_tag(92, rx)
+
+        rx = self.send_and_expect(self.pg3, pkt_from_tag * NUM_PKTS, self.pg1)
+        self.assert_same_mac_addr(pkt_from_tag, rx)
+        self.assert_has_no_tag(rx)
+
+        rx = self.send_and_expect(self.pg3,
+                                  pkt_from_to_tag * NUM_PKTS,
+                                  self.pg2)
+        self.assert_same_mac_addr(pkt_from_tag, rx)
+        self.assert_has_vlan_tag(92, rx)
+
+        #
+        # but broadcast packets are still flooded
+        #
+        self.send_and_expect(self.pg0, pkt_bcast * 33, self.pg2)
+
+        #
+        # cleanup
+        #
+        self.vapi.l2_emulation(self.pg0.sw_if_index,
+                               enable=0)
+        self.vapi.l2_emulation(self.pg1.sw_if_index,
+                               enable=0)
+        self.vapi.l2_emulation(sub_if_on_pg2.sw_if_index,
+                               enable=0)
+        self.vapi.l2_emulation(sub_if_on_pg3.sw_if_index,
+                               enable=0)
+
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=self.pg0.sw_if_index, bd_id=1, enable=0)
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=self.pg1.sw_if_index, bd_id=1, enable=0)
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=sub_if_on_pg2.sw_if_index, bd_id=1, enable=0)
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=sub_if_on_pg3.sw_if_index, bd_id=1, enable=0)
+
+        route_1.remove_vpp_config()
+        route_2.remove_vpp_config()
+        sub_if_on_pg3.remove_vpp_config()
+        sub_if_on_pg2.remove_vpp_config()
+
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)
diff --git a/src/vnet/fib/test/test_fib.py b/src/vnet/fib/test/test_fib.py
new file mode 100644
index 00000000000..0eefcdf8b80
--- /dev/null
+++ b/src/vnet/fib/test/test_fib.py
@@ -0,0 +1,46 @@
+#!/usr/bin/env python3
+
+import unittest
+
+from framework import VppTestCase, VppTestRunner
+
+
+class TestFIB(VppTestCase):
+    """ FIB Test Case """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestFIB, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestFIB, cls).tearDownClass()
+
+    def test_fib(self):
+        """ FIB Unit Tests """
+        error = self.vapi.cli("test fib")
+
+        # shameless test of CLIs to bump lcov results...
+        # no i mean to ensure they don't crash
+        self.logger.info(self.vapi.cli("sh fib source"))
+        self.logger.info(self.vapi.cli("sh fib source prio"))
+        self.logger.info(self.vapi.cli("sh fib memory"))
+        self.logger.info(self.vapi.cli("sh fib entry"))
+        self.logger.info(self.vapi.cli("sh fib entry 0"))
+        self.logger.info(self.vapi.cli("sh fib entry 10000"))
+        self.logger.info(self.vapi.cli("sh fib entry-delegate"))
+        self.logger.info(self.vapi.cli("sh fib paths"))
+        self.logger.info(self.vapi.cli("sh fib paths 0"))
+        self.logger.info(self.vapi.cli("sh fib paths 10000"))
+        self.logger.info(self.vapi.cli("sh fib path-list"))
+        self.logger.info(self.vapi.cli("sh fib path-list 0"))
+        self.logger.info(self.vapi.cli("sh fib path-list 10000"))
+        self.logger.info(self.vapi.cli("sh fib walk"))
+        self.logger.info(self.vapi.cli("sh fib uRPF"))
+
+        if error:
+            self.logger.critical(error)
+        self.assertNotIn("Failed", error)
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)