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-rw-r--r--test/test_neighbor.py98
-rw-r--r--test/vpp_neighbor.py8
2 files changed, 104 insertions, 2 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)
diff --git a/test/vpp_neighbor.py b/test/vpp_neighbor.py
index e8ba3b28823..c08132d1d40 100644
--- a/test/vpp_neighbor.py
+++ b/test/vpp_neighbor.py
@@ -9,7 +9,7 @@ from vpp_object import *
from util import mactobinary
-def find_nbr(test, sw_if_index, ip_addr, is_static=0, inet=AF_INET):
+def find_nbr(test, sw_if_index, ip_addr, is_static=0, inet=AF_INET, mac=None):
nbrs = test.vapi.ip_neighbor_dump(sw_if_index,
is_ipv6=1 if AF_INET6 == inet else 0)
if inet == AF_INET:
@@ -21,7 +21,11 @@ def find_nbr(test, sw_if_index, ip_addr, is_static=0, inet=AF_INET):
for n in nbrs:
if nbr_addr == n.ip_address[:s] \
and is_static == n.is_static:
- return True
+ if mac:
+ if n.mac_address == mactobinary(mac):
+ return True
+ else:
+ return True
return False