vppinfra: bihash walk cb typedef and continue/stop controls

Type: feature

Change-Id: I28f7a658be3f3beec9ea32635b60d1d3a10d9b06
Signed-off-by: Neale Ranns <nranns@cisco.com>
diff --git a/src/vnet/ip/reass/ip4_full_reass.c b/src/vnet/ip/reass/ip4_full_reass.c
index f6c0546..d492e5e 100644
--- a/src/vnet/ip/reass/ip4_full_reass.c
+++ b/src/vnet/ip/reass/ip4_full_reass.c
@@ -1365,7 +1365,7 @@
 } ip4_rehash_cb_ctx;
 
 #ifndef CLIB_MARCH_VARIANT
-static void
+static int
 ip4_rehash_cb (clib_bihash_kv_16_8_t * kv, void *_ctx)
 {
   ip4_rehash_cb_ctx *ctx = _ctx;
@@ -1373,6 +1373,7 @@
     {
       ctx->failure = 1;
     }
+  return (BIHASH_WALK_CONTINUE);
 }
 
 static void