From: Florin Coras <fcoras@cisco.com>
Date: Fri, 8 Sep 2017 20:22:38 +0000 (-0400)
Subject: arp/glean: fix hash computation
X-Git-Tag: v17.10-rc1~96
X-Git-Url: https://gerrit.fd.io/r/gitweb?a=commitdiff_plain;h=2d3dbc45d633c5c2cb1bc4e1f544491e3173f001;p=vpp.git

arp/glean: fix hash computation

Change-Id: Ifef8a9328bb865f6ddb041bafe3699153f89755a
Signed-off-by: Florin Coras <fcoras@cisco.com>
---

diff --git a/src/vnet/ip/ip4_forward.c b/src/vnet/ip/ip4_forward.c
index ec4287bb008..b3de1201abc 100755
--- a/src/vnet/ip/ip4_forward.c
+++ b/src/vnet/ip/ip4_forward.c
@@ -2032,11 +2032,12 @@ ip4_arp_inline (vlib_main_t * vm,
 	    }
 	  b0 ^= sw_if_index0;
 
+	  hash_v3_mix32 (a0, b0, c0);
 	  hash_v3_finalize32 (a0, b0, c0);
 
 	  c0 &= BITS (hash_bitmap) - 1;
-	  c0 = c0 / BITS (uword);
 	  m0 = (uword) 1 << (c0 % BITS (uword));
+	  c0 = c0 / BITS (uword);
 
 	  bm0 = hash_bitmap[c0];
 	  drop0 = (bm0 & m0) != 0;