ip: allow addrs from the same prefix on intf

[vpp.git] / test / test_ip4.py

diff --git a/test/test_ip4.py b/test/test_ip4.py
index 9339589..0923771 100644 (file)
--- a/test/test_ip4.py
+++ b/test/test_ip4.py
@@ -15,7 +15,9 @@ from framework import VppTestCase, VppTestRunner
 from util import ppp
 from vpp_ip_route import VppIpRoute, VppRoutePath, VppIpMRoute, \
     VppMRoutePath, MRouteItfFlags, MRouteEntryFlags, VppMplsIpBind, \
-    VppMplsTable, VppIpTable, FibPathType, find_route
+    VppMplsTable, VppIpTable, FibPathType, find_route, \
+    VppIpInterfaceAddress
+from vpp_ip import VppIpAddress
 from vpp_sub_interface import VppSubInterface, VppDot1QSubint, VppDot1ADSubint
 from vpp_papi import VppEnum
 
@@ -210,6 +212,131 @@ class TestIPv4(VppTestCase):
             self.verify_capture(i, pkts)
 
 
+class TestIPv4IfAddrRoute(VppTestCase):
+    """ IPv4 Interface Addr Route Test Case """
+
+    @classmethod
+    def setUpClass(cls):
+        super(TestIPv4IfAddrRoute, cls).setUpClass()
+
+    @classmethod
+    def tearDownClass(cls):
+        super(TestIPv4IfAddrRoute, cls).tearDownClass()
+
+    def setUp(self):
+        super(TestIPv4IfAddrRoute, self).setUp()
+
+        # create 1 pg interface
+        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(TestIPv4IfAddrRoute, self).tearDown()
+        for i in self.pg_interfaces:
+            i.unconfig_ip4()
+            i.admin_down()
+
+    def test_ipv4_ifaddrs_same_prefix(self):
+        """ IPv4 Interface Addresses Same Prefix test
+
+        Test scenario:
+
+            - Verify no route in FIB for prefix 10.10.10.0/24
+            - Configure IPv4 address 10.10.10.10/24 on an interface
+            - Verify route in FIB for prefix 10.10.10.0/24
+            - Configure IPv4 address 10.10.10.20/24 on an interface
+            - Delete 10.10.10.10/24 from interface
+            - Verify route in FIB for prefix 10.10.10.0/24
+            - Delete 10.10.10.20/24 from interface
+            - Verify no route in FIB for prefix 10.10.10.0/24
+        """
+
+        # create two addresses, verify route not present
+        if_addr1 = VppIpInterfaceAddress(self, self.pg0,
+                                         VppIpAddress("10.10.10.10"), 24)
+        if_addr2 = VppIpInterfaceAddress(self, self.pg0,
+                                         VppIpAddress("10.10.10.20"), 24)
+        self.assertFalse(if_addr1.query_vpp_config())  # 10.10.10.0/24
+        self.assertFalse(find_route(self, "10.10.10.10", 32))
+        self.assertFalse(find_route(self, "10.10.10.20", 32))
+        self.assertFalse(find_route(self, "10.10.10.255", 32))
+        self.assertFalse(find_route(self, "10.10.10.0", 32))
+
+        # configure first address, verify route present
+        if_addr1.add_vpp_config()
+        self.assertTrue(if_addr1.query_vpp_config())  # 10.10.10.0/24
+        self.assertTrue(find_route(self, "10.10.10.10", 32))
+        self.assertFalse(find_route(self, "10.10.10.20", 32))
+        self.assertTrue(find_route(self, "10.10.10.255", 32))
+        self.assertTrue(find_route(self, "10.10.10.0", 32))
+
+        # configure second address, delete first, verify route not removed
+        if_addr2.add_vpp_config()
+        if_addr1.remove_vpp_config()
+        self.assertTrue(if_addr1.query_vpp_config())  # 10.10.10.0/24
+        self.assertFalse(find_route(self, "10.10.10.10", 32))
+        self.assertTrue(find_route(self, "10.10.10.20", 32))
+        self.assertTrue(find_route(self, "10.10.10.255", 32))
+        self.assertTrue(find_route(self, "10.10.10.0", 32))
+
+        # delete second address, verify route removed
+        if_addr2.remove_vpp_config()
+        self.assertFalse(if_addr1.query_vpp_config())  # 10.10.10.0/24
+        self.assertFalse(find_route(self, "10.10.10.10", 32))
+        self.assertFalse(find_route(self, "10.10.10.20", 32))
+        self.assertFalse(find_route(self, "10.10.10.255", 32))
+        self.assertFalse(find_route(self, "10.10.10.0", 32))
+
+    def test_ipv4_ifaddr_route(self):
+        """ IPv4 Interface Address Route test
+
+        Test scenario:
+
+            - Create loopback
+            - Configure IPv4 address on loopback
+            - Verify that address is not in the FIB
+            - Bring loopback up
+            - Verify that address is in the FIB now
+            - Bring loopback down
+            - Verify that address is not in the FIB anymore
+            - Bring loopback up
+            - Configure IPv4 address on loopback
+            - Verify that address is in the FIB now
+        """
+
+        # create a loopback and configure IPv4
+        loopbacks = self.create_loopback_interfaces(1)
+        lo_if = self.lo_interfaces[0]
+
+        lo_if.local_ip4_prefix_len = 32
+        lo_if.config_ip4()
+
+        # The intf was down when addr was added -> entry not in FIB
+        fib4_dump = self.vapi.ip_route_dump(0)
+        self.assertFalse(lo_if.is_ip4_entry_in_fib_dump(fib4_dump))
+
+        # When intf is brought up, entry is added
+        lo_if.admin_up()
+        fib4_dump = self.vapi.ip_route_dump(0)
+        self.assertTrue(lo_if.is_ip4_entry_in_fib_dump(fib4_dump))
+
+        # When intf is brought down, entry is removed
+        lo_if.admin_down()
+        fib4_dump = self.vapi.ip_route_dump(0)
+        self.assertFalse(lo_if.is_ip4_entry_in_fib_dump(fib4_dump))
+
+        # Remove addr, bring up interface, re-add -> entry in FIB
+        lo_if.unconfig_ip4()
+        lo_if.admin_up()
+        lo_if.config_ip4()
+        fib4_dump = self.vapi.ip_route_dump(0)
+        self.assertTrue(lo_if.is_ip4_entry_in_fib_dump(fib4_dump))
+
+
 class TestICMPEcho(VppTestCase):
     """ ICMP Echo Test Case """