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Diffstat (limited to 'include/asm-v850/checksum.h')
| -rw-r--r-- | include/asm-v850/checksum.h | 112 |
1 files changed, 0 insertions, 112 deletions
diff --git a/include/asm-v850/checksum.h b/include/asm-v850/checksum.h deleted file mode 100644 index d1dddd938262..000000000000 --- a/include/asm-v850/checksum.h +++ /dev/null | |||
| @@ -1,112 +0,0 @@ | |||
| 1 | /* | ||
| 2 | * include/asm-v850/checksum.h -- Checksum ops | ||
| 3 | * | ||
| 4 | * Copyright (C) 2001,2005 NEC Corporation | ||
| 5 | * Copyright (C) 2001,2005 Miles Bader <miles@gnu.org> | ||
| 6 | * | ||
| 7 | * This file is subject to the terms and conditions of the GNU General | ||
| 8 | * Public License. See the file COPYING in the main directory of this | ||
| 9 | * archive for more details. | ||
| 10 | * | ||
| 11 | * Written by Miles Bader <miles@gnu.org> | ||
| 12 | */ | ||
| 13 | |||
| 14 | #ifndef __V850_CHECKSUM_H__ | ||
| 15 | #define __V850_CHECKSUM_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 | extern __wsum csum_partial(const void *buff, int len, __wsum sum); | ||
| 30 | |||
| 31 | /* | ||
| 32 | * the same as csum_partial, but copies from src while it | ||
| 33 | * checksums | ||
| 34 | * | ||
| 35 | * here even more important to align src and dst on a 32-bit (or even | ||
| 36 | * better 64-bit) boundary | ||
| 37 | */ | ||
| 38 | extern __wsum csum_partial_copy_nocheck(const void *src, | ||
| 39 | void *dst, int len, __wsum sum); | ||
| 40 | |||
| 41 | |||
| 42 | /* | ||
| 43 | * the same as csum_partial_copy, but copies from user space. | ||
| 44 | * | ||
| 45 | * here even more important to align src and dst on a 32-bit (or even | ||
| 46 | * better 64-bit) boundary | ||
| 47 | */ | ||
| 48 | extern __wsum csum_partial_copy_from_user (const void *src, | ||
| 49 | void *dst, | ||
| 50 | int len, __wsum sum, | ||
| 51 | int *csum_err); | ||
| 52 | |||
| 53 | __sum16 ip_fast_csum(const void *iph, unsigned int ihl); | ||
| 54 | |||
| 55 | /* | ||
| 56 | * Fold a partial checksum | ||
| 57 | */ | ||
| 58 | static inline __sum16 csum_fold (__wsum sum) | ||
| 59 | { | ||
| 60 | unsigned int result; | ||
| 61 | /* | ||
| 62 | %0 %1 | ||
| 63 | hsw %1, %0 H L L H | ||
| 64 | add %1, %0 H L H+L+C H+L | ||
| 65 | */ | ||
| 66 | asm ("hsw %1, %0; add %1, %0" : "=&r" (result) : "r" (sum)); | ||
| 67 | return (__force __sum16)(~result >> 16); | ||
| 68 | } | ||
| 69 | |||
| 70 | |||
| 71 | /* | ||
| 72 | * computes the checksum of the TCP/UDP pseudo-header | ||
| 73 | * returns a 16-bit checksum, already complemented | ||
| 74 | */ | ||
| 75 | static inline __wsum | ||
| 76 | csum_tcpudp_nofold (__be32 saddr, __be32 daddr, | ||
| 77 | unsigned short len, | ||
| 78 | unsigned short proto, __wsum sum) | ||
| 79 | { | ||
| 80 | int __carry; | ||
| 81 | __asm__ ("add %2, %0;" | ||
| 82 | "setf c, %1;" | ||
| 83 | "add %1, %0;" | ||
| 84 | "add %3, %0;" | ||
| 85 | "setf c, %1;" | ||
| 86 | "add %1, %0;" | ||
| 87 | "add %4, %0;" | ||
| 88 | "setf c, %1;" | ||
| 89 | "add %1, %0" | ||
| 90 | : "=&r" (sum), "=&r" (__carry) | ||
| 91 | : "r" (daddr), "r" (saddr), | ||
| 92 | "r" ((len + proto) << 8), | ||
| 93 | "0" (sum)); | ||
| 94 | return sum; | ||
| 95 | } | ||
| 96 | |||
| 97 | static inline __sum16 | ||
| 98 | csum_tcpudp_magic (__be32 saddr, __be32 daddr, | ||
| 99 | unsigned short len, | ||
| 100 | unsigned short proto, __wsum sum) | ||
| 101 | { | ||
| 102 | return csum_fold (csum_tcpudp_nofold (saddr, daddr, len, proto, sum)); | ||
| 103 | } | ||
| 104 | |||
| 105 | /* | ||
| 106 | * this routine is used for miscellaneous IP-like checksums, mainly | ||
| 107 | * in icmp.c | ||
| 108 | */ | ||
| 109 | extern __sum16 ip_compute_csum(const void *buff, int len); | ||
| 110 | |||
| 111 | |||
| 112 | #endif /* __V850_CHECKSUM_H__ */ | ||