From: Andy Zhou <azhou@nicira.com>
Date: Fri, 28 Mar 2014 02:08:36 +0000 (-0700)
Subject: lib/hash.h: fix hash_2words
X-Git-Tag: sliver-openvswitch-2.2.90-1~6^2~17
X-Git-Url: http://git.onelab.eu/?p=sliver-openvswitch.git;a=commitdiff_plain;h=17041b123264aad1c3824e5f2edc37b580b38c92

lib/hash.h: fix hash_2words

Number of bytes in 2 words should be 8, instead of 4 bytes,
to better follow the mhash_finish() API. It is unlikely the fix
will improve the quality of hashing results.

Signed-off-by: Andy Zhou <azhou@nicira.com>
Acked-by: Ben Pfaff <blp@nicira.com>
---

diff --git a/lib/hash.h b/lib/hash.h
index f8a72ed91..0e8edf395 100644
--- a/lib/hash.h
+++ b/lib/hash.h
@@ -115,7 +115,7 @@ static inline uint32_t hash_pointer(const void *p, uint32_t basis)
 
 static inline uint32_t hash_2words(uint32_t x, uint32_t y)
 {
-    return mhash_finish(mhash_add(mhash_add(x, 0), y), 4);
+    return mhash_finish(mhash_add(mhash_add(x, 0), y), 8);
 }
 
 #ifdef __cplusplus