diff options
Diffstat (limited to 'arch/microblaze/include/asm/checksum.h')
-rw-r--r-- | arch/microblaze/include/asm/checksum.h | 70 |
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 | ||
19 | static inline __wsum | 18 | static inline __wsum |
20 | csum_tcpudp_nofold(__be32 saddr, __be32 daddr, unsigned short len, | 19 | csum_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 | */ | ||
45 | extern __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 | */ | ||
54 | extern __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 | */ | ||
63 | extern __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 | */ | ||
74 | extern __sum16 ip_fast_csum(const void *iph, unsigned int ihl); | ||
75 | |||
76 | /* | ||
77 | * Fold a partial checksum | ||
78 | */ | ||
79 | static 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 | |||
87 | static inline __sum16 | ||
88 | csum_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 | */ | ||
98 | extern __sum16 ip_compute_csum(const void *buff, int len); | ||
99 | 33 | ||
100 | #endif /* _ASM_MICROBLAZE_CHECKSUM_H */ | 34 | #endif /* _ASM_MICROBLAZE_CHECKSUM_H */ |