1#ifndef _H8300_CHECKSUM_H
2#define _H8300_CHECKSUM_H
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16__wsum csum_partial(const void *buff, int len, __wsum sum);
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26__wsum csum_partial_copy_nocheck(const void *src, void *dst, int len, __wsum sum);
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36extern __wsum csum_partial_copy_from_user(const void __user *src, void *dst,
37 int len, __wsum sum, int *csum_err);
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39__sum16 ip_fast_csum(const void *iph, unsigned int ihl);
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46static inline __sum16 csum_fold(__wsum sum)
47{
48 __asm__("mov.l %0,er0\n\t"
49 "add.w e0,r0\n\t"
50 "xor.w e0,e0\n\t"
51 "rotxl.w e0\n\t"
52 "add.w e0,r0\n\t"
53 "sub.w e0,e0\n\t"
54 "mov.l er0,%0"
55 : "=r"(sum)
56 : "0"(sum)
57 : "er0");
58 return (__force __sum16)~sum;
59}
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67static inline __wsum
68csum_tcpudp_nofold(__be32 saddr, __be32 daddr, unsigned short len,
69 unsigned short proto, __wsum sum)
70{
71 __asm__ ("sub.l er0,er0\n\t"
72 "add.l %2,%0\n\t"
73 "addx #0,r0l\n\t"
74 "add.l %3,%0\n\t"
75 "addx #0,r0l\n\t"
76 "add.l %4,%0\n\t"
77 "addx #0,r0l\n\t"
78 "add.l er0,%0\n\t"
79 "bcc 1f\n\t"
80 "inc.l #1,%0\n"
81 "1:"
82 : "=&r" (sum)
83 : "0" (sum), "r" (daddr), "r" (saddr), "r" (len + proto)
84 :"er0");
85 return sum;
86}
87
88static inline __sum16
89csum_tcpudp_magic(__be32 saddr, __be32 daddr, unsigned short len,
90 unsigned short proto, __wsum sum)
91{
92 return csum_fold(csum_tcpudp_nofold(saddr,daddr,len,proto,sum));
93}
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100extern __sum16 ip_compute_csum(const void *buff, int len);
101
102#endif
103