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-rw-r--r--test/test_neighbor.py98
1 files changed, 98 insertions, 0 deletions
diff --git a/test/test_neighbor.py b/test/test_neighbor.py
index 7798fdd5e7c..c161eb8881c 100644
--- a/test/test_neighbor.py
+++ b/test/test_neighbor.py
@@ -1214,6 +1214,104 @@ class ARPTestCase(VppTestCase):
self.vapi.sw_interface_set_mac_address(self.pg2.sw_if_index,
mac_string)
+ def test_garp(self):
+ """ GARP """
+
+ #
+ # Generate some hosts on the LAN
+ #
+ self.pg1.generate_remote_hosts(4)
+
+ #
+ # And an ARP entry
+ #
+ arp = VppNeighbor(self,
+ self.pg1.sw_if_index,
+ self.pg1.remote_hosts[1].mac,
+ self.pg1.remote_hosts[1].ip4)
+ arp.add_vpp_config()
+
+ self.assertTrue(find_nbr(self,
+ self.pg1.sw_if_index,
+ self.pg1.remote_hosts[1].ip4,
+ mac=self.pg1.remote_hosts[1].mac))
+
+ #
+ # Send a GARP (request) to swap the host 1's address to that of host 2
+ #
+ p1 = (Ether(dst="ff:ff:ff:ff:ff:ff",
+ src=self.pg1.remote_hosts[2].mac) /
+ ARP(op="who-has",
+ hwdst=self.pg1.local_mac,
+ hwsrc=self.pg1.remote_hosts[2].mac,
+ pdst=self.pg1.remote_hosts[1].ip4,
+ psrc=self.pg1.remote_hosts[1].ip4))
+
+ self.pg1.add_stream(p1)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ self.assertTrue(find_nbr(self,
+ self.pg1.sw_if_index,
+ self.pg1.remote_hosts[1].ip4,
+ mac=self.pg1.remote_hosts[2].mac))
+
+ #
+ # Send a GARP (reply) to swap the host 1's address to that of host 3
+ #
+ p1 = (Ether(dst="ff:ff:ff:ff:ff:ff",
+ src=self.pg1.remote_hosts[3].mac) /
+ ARP(op="is-at",
+ hwdst=self.pg1.local_mac,
+ hwsrc=self.pg1.remote_hosts[3].mac,
+ pdst=self.pg1.remote_hosts[1].ip4,
+ psrc=self.pg1.remote_hosts[1].ip4))
+
+ self.pg1.add_stream(p1)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ self.assertTrue(find_nbr(self,
+ self.pg1.sw_if_index,
+ self.pg1.remote_hosts[1].ip4,
+ mac=self.pg1.remote_hosts[3].mac))
+
+ #
+ # GARPs (requets nor replies) for host we don't know yet
+ # don't result in new neighbour entries
+ #
+ p1 = (Ether(dst="ff:ff:ff:ff:ff:ff",
+ src=self.pg1.remote_hosts[3].mac) /
+ ARP(op="who-has",
+ hwdst=self.pg1.local_mac,
+ hwsrc=self.pg1.remote_hosts[3].mac,
+ pdst=self.pg1.remote_hosts[2].ip4,
+ psrc=self.pg1.remote_hosts[2].ip4))
+
+ self.pg1.add_stream(p1)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ self.assertFalse(find_nbr(self,
+ self.pg1.sw_if_index,
+ self.pg1.remote_hosts[2].ip4))
+
+ p1 = (Ether(dst="ff:ff:ff:ff:ff:ff",
+ src=self.pg1.remote_hosts[3].mac) /
+ ARP(op="is-at",
+ hwdst=self.pg1.local_mac,
+ hwsrc=self.pg1.remote_hosts[3].mac,
+ pdst=self.pg1.remote_hosts[2].ip4,
+ psrc=self.pg1.remote_hosts[2].ip4))
+
+ self.pg1.add_stream(p1)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ self.assertFalse(find_nbr(self,
+ self.pg1.sw_if_index,
+ self.pg1.remote_hosts[2].ip4))
+
if __name__ == '__main__':
unittest.main(testRunner=VppTestRunner)