From 7741afaf5c66a5d7ed1d2d76ae36a81ec24fdaaa Mon Sep 17 00:00:00 2001
From: Ray Kinsella <mdr@ashroe.eu>
Date: Tue, 7 Apr 2020 07:51:23 +0100
Subject: classify: use clib_crc32c on supporting uarch

Use clib_crc32c in place of clib_xxhash on supporting uarch.

Type: improvement

Signed-off-by: Ray Kinsella <mdr@ashroe.eu>
Change-Id: Icdfb4ffa92c2c9e7aebc3ec99f20e91392a103ab
---
 src/vnet/classify/vnet_classify.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/vnet/classify/vnet_classify.h b/src/vnet/classify/vnet_classify.h
index c08cedf6b03..db3821b7c77 100644
--- a/src/vnet/classify/vnet_classify.h
+++ b/src/vnet/classify/vnet_classify.h
@@ -21,6 +21,7 @@
 #include <vppinfra/error.h>
 #include <vppinfra/hash.h>
 #include <vppinfra/cache.h>
+#include <vppinfra/crc32.h>
 #include <vppinfra/xxhash.h>
 
 extern vlib_node_registration_t ip4_classify_node;
@@ -280,7 +281,11 @@ vnet_classify_hash_packet_inline (vnet_classify_table_t * t, u8 * h)
     }
 #endif /* CLIB_HAVE_VEC128 */
 
+#ifdef clib_crc32c_uses_intrinsics
+  return clib_crc32c ((u8 *) & xor_sum, sizeof (xor_sum));
+#else
   return clib_xxhash (xor_sum.as_u64[0] ^ xor_sum.as_u64[1]);
+#endif
 }
 
 static inline void
-- 
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