[Proxy] ARP tests

Change-Id: I40d6d763b55a26cdee0afef85d1acdd19dd10dd6
Signed-off-by: Neale Ranns <nranns@cisco.com>

test/vpp_neighbor.py

@@ -0,0 +1,77 @@
+"""
+  Neighbour Entries
+
+  object abstractions for ARP and ND
+"""
+
+from socket import inet_pton, inet_ntop, AF_INET, AF_INET6
+from vpp_object import *
+from util import mactobinary
+
+
+def find_nbr(test, sw_if_index, ip_addr, is_static=0, inet=AF_INET):
+    nbrs = test.vapi.ip_neighbor_dump(sw_if_index,
+                                      is_ipv6=1 if AF_INET6 == inet else 0)
+    if inet == AF_INET:
+        s = 4
+    else:
+        s = 16
+    nbr_addr = inet_pton(inet, ip_addr)
+
+    for n in nbrs:
+        if nbr_addr == n.ip_address[:s] \
+           and is_static == n.is_static:
+            return True
+    return False
+
+
+class VppNeighbor(VppObject):
+    """
+    ARP Entry
+    """
+
+    def __init__(self, test, sw_if_index, mac_addr, nbr_addr,
+                 af=AF_INET, is_static=0):
+        self._test = test
+        self.sw_if_index = sw_if_index
+        self.mac_addr = mactobinary(mac_addr)
+        self.af = af
+        self.is_static = is_static
+        self.nbr_addr = inet_pton(af, nbr_addr)
+
+    def add_vpp_config(self):
+        self._test.vapi.ip_neighbor_add_del(
+            self.sw_if_index,
+            self.mac_addr,
+            self.nbr_addr,
+            is_add=1,
+            is_ipv6=1 if AF_INET6 == self.af else 0,
+            is_static=self.is_static)
+        self._test.registry.register(self, self._test.logger)
+
+    def remove_vpp_config(self):
+        self._test.vapi.ip_neighbor_add_del(
+            self.sw_if_index,
+            self.mac_addr,
+            self.nbr_addr,
+            is_ipv6=1 if AF_INET6 == self.af else 0,
+            is_add=0,
+            is_static=self.is_static)
+
+    def query_vpp_config(self):
+        dump = self._test.vapi.ip_neighbor_dump(
+            self.sw_if_index,
+            is_ipv6=1 if AF_INET6 == self.af else 0)
+        for n in dump:
+            if self.nbr_addr == n.ip_address \
+               and self.is_static == n.is_static:
+                return True
+        return False
+
+    def __str__(self):
+        return self.object_id()
+
+    def object_id(self):
+        return ("%d:%s"
+                % (self.sw_if_index,
+                   inet_ntop(self.af, self.nbr_addr)))