diff options
author | Paul Mundt <lethal@linux-sh.org> | 2007-11-11 03:36:13 -0500 |
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committer | Paul Mundt <lethal@linux-sh.org> | 2008-01-27 23:18:45 -0500 |
commit | fcfdd0f14f94d47f2f650a24cd111e11475ccada (patch) | |
tree | 3aa31620c31d66fb1ed72a93a3345e454f1df652 /include/asm-sh64/checksum.h | |
parent | 63e2c803326babe74033b3cbe6e8c550037c554f (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.h | 82 |
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 | */ | ||
29 | asmlinkage __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 | |||
46 | static 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 | */ | ||
64 | static 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 | */ | ||
76 | static 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 | |||