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authorPaul Mundt <lethal@linux-sh.org>2007-11-11 03:36:13 -0500
committerPaul Mundt <lethal@linux-sh.org>2008-01-27 23:18:45 -0500
commitfcfdd0f14f94d47f2f650a24cd111e11475ccada (patch)
tree3aa31620c31d66fb1ed72a93a3345e454f1df652 /include/asm-sh64/checksum.h
parent63e2c803326babe74033b3cbe6e8c550037c554f (diff)
sh: Split out checksum.h in to _32 and _64 variants.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'include/asm-sh64/checksum.h')
-rw-r--r--include/asm-sh64/checksum.h82
1 files changed, 0 insertions, 82 deletions
diff --git a/include/asm-sh64/checksum.h b/include/asm-sh64/checksum.h
deleted file mode 100644
index ba594ccb42e5..000000000000
--- a/include/asm-sh64/checksum.h
+++ /dev/null
@@ -1,82 +0,0 @@
1#ifndef __ASM_SH64_CHECKSUM_H
2#define __ASM_SH64_CHECKSUM_H
3
4/*
5 * This file is subject to the terms and conditions of the GNU General Public
6 * License. See the file "COPYING" in the main directory of this archive
7 * for more details.
8 *
9 * include/asm-sh64/checksum.h
10 *
11 * Copyright (C) 2000, 2001 Paolo Alberelli
12 *
13 */
14
15#include <asm/registers.h>
16
17/*
18 * computes the checksum of a memory block at buff, length len,
19 * and adds in "sum" (32-bit)
20 *
21 * returns a 32-bit number suitable for feeding into itself
22 * or csum_tcpudp_magic
23 *
24 * this function must be called with even lengths, except
25 * for the last fragment, which may be odd
26 *
27 * it's best to have buff aligned on a 32-bit boundary
28 */
29asmlinkage __wsum csum_partial(const void *buff, int len, __wsum sum);
30
31/*
32 * Note: when you get a NULL pointer exception here this means someone
33 * passed in an incorrect kernel address to one of these functions.
34 *
35 * If you use these functions directly please don't forget the
36 * access_ok().
37 */
38
39
40__wsum csum_partial_copy_nocheck(const void *src, void *dst, int len,
41 __wsum sum);
42
43__wsum csum_partial_copy_from_user(const void __user *src, void *dst,
44 int len, __wsum sum, int *err_ptr);
45
46static inline __sum16 csum_fold(__wsum csum)
47{
48 u32 sum = (__force u32)csum;
49 sum = (sum & 0xffff) + (sum >> 16);
50 sum = (sum & 0xffff) + (sum >> 16);
51 return (__force __sum16)~sum;
52}
53
54__sum16 ip_fast_csum(const void *iph, unsigned int ihl);
55
56__wsum csum_tcpudp_nofold(__be32 saddr, __be32 daddr,
57 unsigned short len, unsigned short proto,
58 __wsum sum);
59
60/*
61 * computes the checksum of the TCP/UDP pseudo-header
62 * returns a 16-bit checksum, already complemented
63 */
64static inline __sum16 csum_tcpudp_magic(__be32 saddr, __be32 daddr,
65 unsigned short len,
66 unsigned short proto,
67 __wsum sum)
68{
69 return csum_fold(csum_tcpudp_nofold(saddr,daddr,len,proto,sum));
70}
71
72/*
73 * this routine is used for miscellaneous IP-like checksums, mainly
74 * in icmp.c
75 */
76static inline __sum16 ip_compute_csum(const void *buff, int len)
77{
78 return csum_fold(csum_partial(buff, len, 0));
79}
80
81#endif /* __ASM_SH64_CHECKSUM_H */
82