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kernel: revert the change from JHASH_GOLDEN_RATIO to JHASH_INIT_PARAM (ipv6 still relies on it)

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SVN-Revision: 15155
This commit is contained in:
Felix Fietkau 2009-04-08 15:06:38 +00:00
parent ac26fab9ce
commit 8b30a1806c
1 changed files with 6 additions and 6 deletions
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12
target/linux/generic-2.6/patches-2.6.28/201-jhash3.patch
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@ -70,7 +70,7 @@
-/* The golden ration: an arbitrary value */
-#define JHASH_GOLDEN_RATIO 0x9e3779b9
+/* An arbitrary initial parameter */
+#define JHASH_INIT_PARAM 0xdeadbeef
+#define JHASH_GOLDEN_RATIO 0xdeadbeef
/* The most generic version, hashes an arbitrary sequence
* of bytes. No alignment or length assumptions are made about
@ -94,7 +94,7 @@
-
- __jhash_mix(a,b,c);
+ /* Set up the internal state */
+ a = b = c = JHASH_INIT_PARAM + length + initval;
+ a = b = c = JHASH_GOLDEN_RATIO + length + initval;
+ /* all but the last block: affect some 32 bits of (a,b,c) */
+ while (length > 12) {
@ -154,7 +154,7 @@
- c = initval;
- len = length;
+ /* Set up the internal state */
+ a = b = c = JHASH_INIT_PARAM + (length<<2) + initval;
+ a = b = c = JHASH_GOLDEN_RATIO + (length<<2) + initval;
- while (len >= 3) {
+ /* handle most of the key */
@ -202,9 +202,9 @@
- a += JHASH_GOLDEN_RATIO;
- b += JHASH_GOLDEN_RATIO;
- c += initval;
+ a += JHASH_INIT_PARAM + initval;
+ b += JHASH_INIT_PARAM + initval;
+ c += JHASH_INIT_PARAM + initval;
+ a += JHASH_GOLDEN_RATIO + initval;
+ b += JHASH_GOLDEN_RATIO + initval;
+ c += JHASH_GOLDEN_RATIO + initval;
- __jhash_mix(a, b, c);
+ __jhash_final(a, b, c);