1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
|
diff -ruN ipset-2.2.9a.orig/ipset_iphash.c ipset-2.2.9a/ipset_iphash.c
--- ipset-2.2.9a.orig/ipset_iphash.c 2006-10-06 03:41:17.000000000 -0500
+++ ipset-2.2.9a/ipset_iphash.c 2007-07-11 10:10:54.349001865 -0500
@@ -28,7 +28,7 @@
#include <asm/types.h>
#include <linux/netfilter_ipv4/ip_set_iphash.h>
-#include <linux/netfilter_ipv4/ip_set_jhash.h>
+#include "ip_set_jhash.h"
#include "ipset.h"
diff -ruN ipset-2.2.9a.orig/ipset_ipporthash.c ipset-2.2.9a/ipset_ipporthash.c
--- ipset-2.2.9a.orig/ipset_ipporthash.c 2006-10-06 03:41:26.000000000 -0500
+++ ipset-2.2.9a/ipset_ipporthash.c 2007-07-11 10:10:54.345001638 -0500
@@ -28,7 +28,7 @@
#include <asm/types.h>
#include <linux/netfilter_ipv4/ip_set_ipporthash.h>
-#include <linux/netfilter_ipv4/ip_set_jhash.h>
+#include "ip_set_jhash.h"
#include "ipset.h"
diff -ruN ipset-2.2.9a.orig/ip_set_jhash.h ipset-2.2.9a/ip_set_jhash.h
--- ipset-2.2.9a.orig/ip_set_jhash.h 1969-12-31 18:00:00.000000000 -0600
+++ ipset-2.2.9a/ip_set_jhash.h 2007-07-11 10:10:33.711825818 -0500
@@ -0,0 +1,148 @@
+#ifndef _LINUX_IPSET_JHASH_H
+#define _LINUX_IPSET_JHASH_H
+
+/* This is a copy of linux/jhash.h but the types u32/u8 are changed
+ * to __u32/__u8 so that the header file can be included into
+ * userspace code as well. Jozsef Kadlecsik (kadlec@blackhole.kfki.hu)
+ */
+
+/* jhash.h: Jenkins hash support.
+ *
+ * Copyright (C) 1996 Bob Jenkins (bob_jenkins@burtleburtle.net)
+ *
+ * http://burtleburtle.net/bob/hash/
+ *
+ * These are the credits from Bob's sources:
+ *
+ * lookup2.c, by Bob Jenkins, December 1996, Public Domain.
+ * hash(), hash2(), hash3, and mix() are externally useful functions.
+ * Routines to test the hash are included if SELF_TEST is defined.
+ * You can use this free for any purpose. It has no warranty.
+ *
+ * Copyright (C) 2003 David S. Miller (davem@redhat.com)
+ *
+ * I've modified Bob's hash to be useful in the Linux kernel, and
+ * any bugs present are surely my fault. -DaveM
+ */
+
+/* NOTE: Arguments are modified. */
+#define __jhash_mix(a, b, c) \
+{ \
+ a -= b; a -= c; a ^= (c>>13); \
+ b -= c; b -= a; b ^= (a<<8); \
+ c -= a; c -= b; c ^= (b>>13); \
+ a -= b; a -= c; a ^= (c>>12); \
+ b -= c; b -= a; b ^= (a<<16); \
+ c -= a; c -= b; c ^= (b>>5); \
+ a -= b; a -= c; a ^= (c>>3); \
+ b -= c; b -= a; b ^= (a<<10); \
+ c -= a; c -= b; c ^= (b>>15); \
+}
+
+/* The golden ration: an arbitrary value */
+#define JHASH_GOLDEN_RATIO 0x9e3779b9
+
+/* The most generic version, hashes an arbitrary sequence
+ * of bytes. No alignment or length assumptions are made about
+ * the input key.
+ */
+static inline __u32 jhash(void *key, __u32 length, __u32 initval)
+{
+ __u32 a, b, c, len;
+ __u8 *k = key;
+
+ len = length;
+ a = b = JHASH_GOLDEN_RATIO;
+ c = initval;
+
+ while (len >= 12) {
+ a += (k[0] +((__u32)k[1]<<8) +((__u32)k[2]<<16) +((__u32)k[3]<<24));
+ b += (k[4] +((__u32)k[5]<<8) +((__u32)k[6]<<16) +((__u32)k[7]<<24));
+ c += (k[8] +((__u32)k[9]<<8) +((__u32)k[10]<<16)+((__u32)k[11]<<24));
+
+ __jhash_mix(a,b,c);
+
+ k += 12;
+ len -= 12;
+ }
+
+ c += length;
+ switch (len) {
+ case 11: c += ((__u32)k[10]<<24);
+ case 10: c += ((__u32)k[9]<<16);
+ case 9 : c += ((__u32)k[8]<<8);
+ case 8 : b += ((__u32)k[7]<<24);
+ case 7 : b += ((__u32)k[6]<<16);
+ case 6 : b += ((__u32)k[5]<<8);
+ case 5 : b += k[4];
+ case 4 : a += ((__u32)k[3]<<24);
+ case 3 : a += ((__u32)k[2]<<16);
+ case 2 : a += ((__u32)k[1]<<8);
+ case 1 : a += k[0];
+ };
+
+ __jhash_mix(a,b,c);
+
+ return c;
+}
+
+/* A special optimized version that handles 1 or more of __u32s.
+ * The length parameter here is the number of __u32s in the key.
+ */
+static inline __u32 jhash2(__u32 *k, __u32 length, __u32 initval)
+{
+ __u32 a, b, c, len;
+
+ a = b = JHASH_GOLDEN_RATIO;
+ c = initval;
+ len = length;
+
+ while (len >= 3) {
+ a += k[0];
+ b += k[1];
+ c += k[2];
+ __jhash_mix(a, b, c);
+ k += 3; len -= 3;
+ }
+
+ c += length * 4;
+
+ switch (len) {
+ case 2 : b += k[1];
+ case 1 : a += k[0];
+ };
+
+ __jhash_mix(a,b,c);
+
+ return c;
+}
+
+
+/* A special ultra-optimized versions that knows they are hashing exactly
+ * 3, 2 or 1 word(s).
+ *
+ * NOTE: In partilar the "c += length; __jhash_mix(a,b,c);" normally
+ * done at the end is not done here.
+ */
+static inline __u32 jhash_3words(__u32 a, __u32 b, __u32 c, __u32 initval)
+{
+ a += JHASH_GOLDEN_RATIO;
+ b += JHASH_GOLDEN_RATIO;
+ c += initval;
+
+ __jhash_mix(a, b, c);
+
+ return c;
+}
+
+static inline __u32 jhash_2words(__u32 a, __u32 b, __u32 initval)
+{
+ return jhash_3words(a, b, 0, initval);
+}
+
+static inline __u32 jhash_1word(__u32 a, __u32 initval)
+{
+ return jhash_3words(a, 0, 0, initval);
+}
+
+#endif /* _LINUX_IPSET_JHASH_H */
diff -ruN ipset-2.2.9a.orig/ipset_nethash.c ipset-2.2.9a/ipset_nethash.c
--- ipset-2.2.9a.orig/ipset_nethash.c 2006-10-06 03:41:46.000000000 -0500
+++ ipset-2.2.9a/ipset_nethash.c 2007-07-11 10:10:54.369003006 -0500
@@ -28,7 +28,7 @@
#include <asm/types.h>
#include <linux/netfilter_ipv4/ip_set_nethash.h>
-#include <linux/netfilter_ipv4/ip_set_jhash.h>
+#include "ip_set_jhash.h"
#include "ipset.h"
|
