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Diffstat (limited to 'include/asm-m68knommu/checksum.h')
-rw-r--r-- | include/asm-m68knommu/checksum.h | 132 |
1 files changed, 0 insertions, 132 deletions
diff --git a/include/asm-m68knommu/checksum.h b/include/asm-m68knommu/checksum.h deleted file mode 100644 index 81883482ffb1..000000000000 --- a/include/asm-m68knommu/checksum.h +++ /dev/null | |||
@@ -1,132 +0,0 @@ | |||
1 | #ifndef _M68K_CHECKSUM_H | ||
2 | #define _M68K_CHECKSUM_H | ||
3 | |||
4 | #include <linux/in6.h> | ||
5 | |||
6 | /* | ||
7 | * computes the checksum of a memory block at buff, length len, | ||
8 | * and adds in "sum" (32-bit) | ||
9 | * | ||
10 | * returns a 32-bit number suitable for feeding into itself | ||
11 | * or csum_tcpudp_magic | ||
12 | * | ||
13 | * this function must be called with even lengths, except | ||
14 | * for the last fragment, which may be odd | ||
15 | * | ||
16 | * it's best to have buff aligned on a 32-bit boundary | ||
17 | */ | ||
18 | __wsum csum_partial(const void *buff, int len, __wsum sum); | ||
19 | |||
20 | /* | ||
21 | * the same as csum_partial, but copies from src while it | ||
22 | * checksums | ||
23 | * | ||
24 | * here even more important to align src and dst on a 32-bit (or even | ||
25 | * better 64-bit) boundary | ||
26 | */ | ||
27 | |||
28 | __wsum csum_partial_copy_nocheck(const void *src, void *dst, | ||
29 | int len, __wsum sum); | ||
30 | |||
31 | |||
32 | /* | ||
33 | * the same as csum_partial_copy, but copies from user space. | ||
34 | * | ||
35 | * here even more important to align src and dst on a 32-bit (or even | ||
36 | * better 64-bit) boundary | ||
37 | */ | ||
38 | |||
39 | extern __wsum csum_partial_copy_from_user(const void __user *src, | ||
40 | void *dst, int len, __wsum sum, int *csum_err); | ||
41 | |||
42 | __sum16 ip_fast_csum(const void *iph, unsigned int ihl); | ||
43 | |||
44 | /* | ||
45 | * Fold a partial checksum | ||
46 | */ | ||
47 | |||
48 | static inline __sum16 csum_fold(__wsum sum) | ||
49 | { | ||
50 | unsigned int tmp = (__force u32)sum; | ||
51 | #ifdef CONFIG_COLDFIRE | ||
52 | tmp = (tmp & 0xffff) + (tmp >> 16); | ||
53 | tmp = (tmp & 0xffff) + (tmp >> 16); | ||
54 | return (__force __sum16)~tmp; | ||
55 | #else | ||
56 | __asm__("swap %1\n\t" | ||
57 | "addw %1, %0\n\t" | ||
58 | "clrw %1\n\t" | ||
59 | "addxw %1, %0" | ||
60 | : "=&d" (sum), "=&d" (tmp) | ||
61 | : "0" (sum), "1" (sum)); | ||
62 | return (__force __sum16)~sum; | ||
63 | #endif | ||
64 | } | ||
65 | |||
66 | |||
67 | /* | ||
68 | * computes the checksum of the TCP/UDP pseudo-header | ||
69 | * returns a 16-bit checksum, already complemented | ||
70 | */ | ||
71 | |||
72 | static inline __wsum | ||
73 | csum_tcpudp_nofold(__be32 saddr, __be32 daddr, unsigned short len, | ||
74 | unsigned short proto, __wsum sum) | ||
75 | { | ||
76 | __asm__ ("addl %1,%0\n\t" | ||
77 | "addxl %4,%0\n\t" | ||
78 | "addxl %5,%0\n\t" | ||
79 | "clrl %1\n\t" | ||
80 | "addxl %1,%0" | ||
81 | : "=&d" (sum), "=&d" (saddr) | ||
82 | : "0" (daddr), "1" (saddr), "d" (len + proto), | ||
83 | "d"(sum)); | ||
84 | return 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 | |||
99 | extern __sum16 ip_compute_csum(const void *buff, int len); | ||
100 | |||
101 | #define _HAVE_ARCH_IPV6_CSUM | ||
102 | static __inline__ __sum16 | ||
103 | csum_ipv6_magic(const struct in6_addr *saddr, const struct in6_addr *daddr, | ||
104 | __u32 len, unsigned short proto, __wsum sum) | ||
105 | { | ||
106 | register unsigned long tmp; | ||
107 | __asm__("addl %2@,%0\n\t" | ||
108 | "movel %2@(4),%1\n\t" | ||
109 | "addxl %1,%0\n\t" | ||
110 | "movel %2@(8),%1\n\t" | ||
111 | "addxl %1,%0\n\t" | ||
112 | "movel %2@(12),%1\n\t" | ||
113 | "addxl %1,%0\n\t" | ||
114 | "movel %3@,%1\n\t" | ||
115 | "addxl %1,%0\n\t" | ||
116 | "movel %3@(4),%1\n\t" | ||
117 | "addxl %1,%0\n\t" | ||
118 | "movel %3@(8),%1\n\t" | ||
119 | "addxl %1,%0\n\t" | ||
120 | "movel %3@(12),%1\n\t" | ||
121 | "addxl %1,%0\n\t" | ||
122 | "addxl %4,%0\n\t" | ||
123 | "clrl %1\n\t" | ||
124 | "addxl %1,%0" | ||
125 | : "=&d" (sum), "=&d" (tmp) | ||
126 | : "a" (saddr), "a" (daddr), "d" (len + proto), | ||
127 | "0" (sum)); | ||
128 | |||
129 | return csum_fold(sum); | ||
130 | } | ||
131 | |||
132 | #endif /* _M68K_CHECKSUM_H */ | ||