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-rw-r--r--arch/microblaze/include/asm/checksum.h70
1 files changed, 2 insertions, 68 deletions
diff --git a/arch/microblaze/include/asm/checksum.h b/arch/microblaze/include/asm/checksum.h
index 97ea46b5cf80..128bf03b54b7 100644
--- a/arch/microblaze/include/asm/checksum.h
+++ b/arch/microblaze/include/asm/checksum.h
@@ -10,12 +10,11 @@
10#ifndef _ASM_MICROBLAZE_CHECKSUM_H 10#ifndef _ASM_MICROBLAZE_CHECKSUM_H
11#define _ASM_MICROBLAZE_CHECKSUM_H 11#define _ASM_MICROBLAZE_CHECKSUM_H
12 12
13#include <linux/in6.h>
14
15/* 13/*
16 * computes the checksum of the TCP/UDP pseudo-header 14 * computes the checksum of the TCP/UDP pseudo-header
17 * returns a 16-bit checksum, already complemented 15 * returns a 16-bit checksum, already complemented
18 */ 16 */
17#define csum_tcpudp_nofold csum_tcpudp_nofold
19static inline __wsum 18static inline __wsum
20csum_tcpudp_nofold(__be32 saddr, __be32 daddr, unsigned short len, 19csum_tcpudp_nofold(__be32 saddr, __be32 daddr, unsigned short len,
21 unsigned short proto, __wsum sum) 20 unsigned short proto, __wsum sum)
@@ -30,71 +29,6 @@ csum_tcpudp_nofold(__be32 saddr, __be32 daddr, unsigned short len,
30 return sum; 29 return sum;
31} 30}
32 31
33/* 32#include <asm-generic/checksum.h>
34 * computes the checksum of a memory block at buff, length len,
35 * and adds in "sum" (32-bit)
36 *
37 * returns a 32-bit number suitable for feeding into itself
38 * or csum_tcpudp_magic
39 *
40 * this function must be called with even lengths, except
41 * for the last fragment, which may be odd
42 *
43 * it's best to have buff aligned on a 32-bit boundary
44 */
45extern __wsum csum_partial(const void *buff, int len, __wsum sum);
46
47/*
48 * the same as csum_partial, but copies from src while it
49 * checksums
50 *
51 * here even more important to align src and dst on a 32-bit (or even
52 * better 64-bit) boundary
53 */
54extern __wsum csum_partial_copy(const void *src, void *dst, int len,
55 __wsum sum);
56
57/*
58 * the same as csum_partial_copy, but copies from user space.
59 *
60 * here even more important to align src and dst on a 32-bit (or even
61 * better 64-bit) boundary
62 */
63extern __wsum csum_partial_copy_from_user(const void __user *src, void *dst,
64 int len, __wsum sum, int *csum_err);
65
66#define csum_partial_copy_nocheck(src, dst, len, sum) \
67 csum_partial_copy((src), (dst), (len), (sum))
68
69/*
70 * This is a version of ip_compute_csum() optimized for IP headers,
71 * which always checksum on 4 octet boundaries.
72 *
73 */
74extern __sum16 ip_fast_csum(const void *iph, unsigned int ihl);
75
76/*
77 * Fold a partial checksum
78 */
79static inline __sum16 csum_fold(__wsum csum)
80{
81 u32 sum = (__force u32)csum;
82 sum = (sum & 0xffff) + (sum >> 16);
83 sum = (sum & 0xffff) + (sum >> 16);
84 return (__force __sum16)~sum;
85}
86
87static inline __sum16
88csum_tcpudp_magic(__be32 saddr, __be32 daddr, unsigned short len,
89 unsigned short proto, __wsum sum)
90{
91 return csum_fold(csum_tcpudp_nofold(saddr, daddr, len, proto, sum));
92}
93
94/*
95 * this routine is used for miscellaneous IP-like checksums, mainly
96 * in icmp.c
97 */
98extern __sum16 ip_compute_csum(const void *buff, int len);
99 33
100#endif /* _ASM_MICROBLAZE_CHECKSUM_H */ 34#endif /* _ASM_MICROBLAZE_CHECKSUM_H */