Revision: 559
http://sourceforge.net/p/vde/svn/559
Author: rd235
Date: 2013-05-26 14:35:13 +0000 (Sun, 26 May 2013)
Log Message:
-----------
new hash function
Modified Paths:
--------------
branches/rd235/vde-2/src/vde_switch/hash.c
trunk/vde-2/src/vde_switch/hash.c
Modified: branches/rd235/vde-2/src/vde_switch/hash.c
===================================================================
--- branches/rd235/vde-2/src/vde_switch/hash.c 2013-03-20 10:26:31 UTC (rev
558)
+++ branches/rd235/vde-2/src/vde_switch/hash.c 2013-05-26 14:35:13 UTC (rev
559)
@@ -54,10 +54,11 @@
static int calc_hash(uint64_t src)
{
- register int x = src * 0x030507090b0d1113LL;
- x = (x ^ x >> 12 ^ x >> 8 ^ x >> 4) & hash_mask;
- /*printf("HASH %02x:%02x:%02x:%02x:%02x:%02x V%d -> %d\n", src[0],
src[1], src[2], src[3], src[4], src[5],(src[6]>>8)+src[7],x);*/
- return x;
+ src ^= src >> 33;
+ src *= 0xff51afd7ed558ccd;
+ src ^= src >> 33;
+ src *= 0xc4ceb9fe1a85ec53;
+ return src & hash_mask;
}
#if BYTE_ORDER == LITTLE_ENDIAN
Modified: trunk/vde-2/src/vde_switch/hash.c
===================================================================
--- trunk/vde-2/src/vde_switch/hash.c 2013-03-20 10:26:31 UTC (rev 558)
+++ trunk/vde-2/src/vde_switch/hash.c 2013-05-26 14:35:13 UTC (rev 559)
@@ -53,16 +53,17 @@
static int calc_hash(u_int64_t src)
{
- register int x = src * 0x030507090b0d1113LL;
- x = (x ^ x >> 12 ^ x >> 8 ^ x >> 4) & hash_mask;
- /*printf("HASH %02x:%02x:%02x:%02x:%02x:%02x V%d -> %d\n", src[0],
src[1], src[2], src[3], src[4], src[5],(src[6]>>8)+src[7],x);*/
- return x;
+ src ^= src >> 33;
+ src *= 0xff51afd7ed558ccd;
+ src ^= src >> 33;
+ src *= 0xc4ceb9fe1a85ec53;
+ return src & hash_mask;
}
#if BYTE_ORDER == LITTLE_ENDIAN
#define EMAC2MAC6(X) \
(u_int)((X)&0xff), (u_int)(((X)>>8)&0xff), (u_int)(((X)>>16)&0xff), \
- (u_int)(((X)>>24)&0xff), (u_int)(((X)>>32)&0xff), (u_int)(((X)>>40)&0xff)
+(u_int)(((X)>>24)&0xff), (u_int)(((X)>>32)&0xff), (u_int)(((X)>>40)&0xff)
#elif BYTE_ORDER == BIG_ENDIAN
#define EMAC2MAC6(X) \
(u_int)(((X)>>24)&0xff), (u_int)(((X)>>16)&0xff),
(u_int)(((X)>>8)&0xff), \
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