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@@ -1,215 +1,5 @@
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-#ifndef __ASM_SH_CHECKSUM_H
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-#define __ASM_SH_CHECKSUM_H
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-
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-/*
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- * This file is subject to the terms and conditions of the GNU General Public
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- * License. See the file "COPYING" in the main directory of this archive
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- * for more details.
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- *
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- * Copyright (C) 1999 by Kaz Kojima & Niibe Yutaka
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- */
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-
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-#include <linux/in6.h>
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-
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-/*
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- * computes the checksum of a memory block at buff, length len,
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- * and adds in "sum" (32-bit)
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- *
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- * returns a 32-bit number suitable for feeding into itself
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- * or csum_tcpudp_magic
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- *
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- * this function must be called with even lengths, except
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- * for the last fragment, which may be odd
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- *
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- * it's best to have buff aligned on a 32-bit boundary
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- */
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-asmlinkage __wsum csum_partial(const void *buff, int len, __wsum sum);
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-
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-/*
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- * the same as csum_partial, but copies from src while it
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- * checksums, and handles user-space pointer exceptions correctly, when needed.
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- *
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- * here even more important to align src and dst on a 32-bit (or even
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- * better 64-bit) boundary
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- */
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-
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-asmlinkage __wsum csum_partial_copy_generic(const void *src, void *dst,
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- int len, __wsum sum,
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- int *src_err_ptr, int *dst_err_ptr);
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-
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-/*
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- * Note: when you get a NULL pointer exception here this means someone
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- * passed in an incorrect kernel address to one of these functions.
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- *
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- * If you use these functions directly please don't forget the
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- * access_ok().
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- */
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-static inline
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-__wsum csum_partial_copy_nocheck(const void *src, void *dst,
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- int len, __wsum sum)
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-{
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- return csum_partial_copy_generic(src, dst, len, sum, NULL, NULL);
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-}
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-
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-static inline
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-__wsum csum_partial_copy_from_user(const void __user *src, void *dst,
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- int len, __wsum sum, int *err_ptr)
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-{
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- return csum_partial_copy_generic((__force const void *)src, dst,
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- len, sum, err_ptr, NULL);
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-}
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-
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-/*
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- * Fold a partial checksum
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- */
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-
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-static inline __sum16 csum_fold(__wsum sum)
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-{
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- unsigned int __dummy;
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- __asm__("swap.w %0, %1\n\t"
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- "extu.w %0, %0\n\t"
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- "extu.w %1, %1\n\t"
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- "add %1, %0\n\t"
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- "swap.w %0, %1\n\t"
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- "add %1, %0\n\t"
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- "not %0, %0\n\t"
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- : "=r" (sum), "=&r" (__dummy)
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- : "0" (sum)
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- : "t");
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- return (__force __sum16)sum;
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-}
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-
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-/*
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- * This is a version of ip_compute_csum() optimized for IP headers,
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- * which always checksum on 4 octet boundaries.
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- *
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- * i386 version by Jorge Cwik <jorge@laser.satlink.net>, adapted
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- * for linux by * Arnt Gulbrandsen.
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- */
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-static inline __sum16 ip_fast_csum(const void *iph, unsigned int ihl)
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-{
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- unsigned int sum, __dummy0, __dummy1;
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-
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- __asm__ __volatile__(
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- "mov.l @%1+, %0\n\t"
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- "mov.l @%1+, %3\n\t"
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- "add #-2, %2\n\t"
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- "clrt\n\t"
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- "1:\t"
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- "addc %3, %0\n\t"
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- "movt %4\n\t"
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- "mov.l @%1+, %3\n\t"
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- "dt %2\n\t"
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- "bf/s 1b\n\t"
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- " cmp/eq #1, %4\n\t"
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- "addc %3, %0\n\t"
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- "addc %2, %0" /* Here %2 is 0, add carry-bit */
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- /* Since the input registers which are loaded with iph and ihl
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- are modified, we must also specify them as outputs, or gcc
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- will assume they contain their original values. */
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- : "=r" (sum), "=r" (iph), "=r" (ihl), "=&r" (__dummy0), "=&z" (__dummy1)
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- : "1" (iph), "2" (ihl)
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- : "t");
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-
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- return csum_fold(sum);
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-}
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-
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-static inline __wsum csum_tcpudp_nofold(__be32 saddr, __be32 daddr,
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- unsigned short len,
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- unsigned short proto,
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- __wsum sum)
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-{
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-#ifdef __LITTLE_ENDIAN__
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- unsigned long len_proto = (proto + len) << 8;
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+#ifdef CONFIG_SUPERH32
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+# include "checksum_32.h"
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#else
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- unsigned long len_proto = proto + len;
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+# include "checksum_64.h"
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#endif
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- __asm__("clrt\n\t"
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- "addc %0, %1\n\t"
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- "addc %2, %1\n\t"
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- "addc %3, %1\n\t"
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- "movt %0\n\t"
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- "add %1, %0"
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- : "=r" (sum), "=r" (len_proto)
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- : "r" (daddr), "r" (saddr), "1" (len_proto), "0" (sum)
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- : "t");
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-
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- return sum;
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-}
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-
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-/*
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- * computes the checksum of the TCP/UDP pseudo-header
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- * returns a 16-bit checksum, already complemented
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- */
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-static inline __sum16 csum_tcpudp_magic(__be32 saddr, __be32 daddr,
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- unsigned short len,
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- unsigned short proto,
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- __wsum sum)
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-{
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- return csum_fold(csum_tcpudp_nofold(saddr, daddr, len, proto, sum));
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-}
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-
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-/*
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- * this routine is used for miscellaneous IP-like checksums, mainly
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- * in icmp.c
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- */
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-static inline __sum16 ip_compute_csum(const void *buff, int len)
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-{
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- return csum_fold(csum_partial(buff, len, 0));
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-}
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-
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-#define _HAVE_ARCH_IPV6_CSUM
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-static inline __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
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- const struct in6_addr *daddr,
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- __u32 len, unsigned short proto,
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- __wsum sum)
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-{
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- unsigned int __dummy;
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- __asm__("clrt\n\t"
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- "mov.l @(0,%2), %1\n\t"
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- "addc %1, %0\n\t"
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- "mov.l @(4,%2), %1\n\t"
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- "addc %1, %0\n\t"
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- "mov.l @(8,%2), %1\n\t"
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- "addc %1, %0\n\t"
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- "mov.l @(12,%2), %1\n\t"
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- "addc %1, %0\n\t"
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- "mov.l @(0,%3), %1\n\t"
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- "addc %1, %0\n\t"
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- "mov.l @(4,%3), %1\n\t"
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- "addc %1, %0\n\t"
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- "mov.l @(8,%3), %1\n\t"
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- "addc %1, %0\n\t"
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- "mov.l @(12,%3), %1\n\t"
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- "addc %1, %0\n\t"
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- "addc %4, %0\n\t"
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- "addc %5, %0\n\t"
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- "movt %1\n\t"
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- "add %1, %0\n"
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- : "=r" (sum), "=&r" (__dummy)
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- : "r" (saddr), "r" (daddr),
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- "r" (htonl(len)), "r" (htonl(proto)), "0" (sum)
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- : "t");
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-
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- return csum_fold(sum);
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-}
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-
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-/*
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- * Copy and checksum to user
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- */
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-#define HAVE_CSUM_COPY_USER
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-static inline __wsum csum_and_copy_to_user(const void *src,
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- void __user *dst,
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- int len, __wsum sum,
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- int *err_ptr)
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-{
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- if (access_ok(VERIFY_WRITE, dst, len))
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- return csum_partial_copy_generic((__force const void *)src,
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- dst, len, sum, NULL, err_ptr);
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-
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- if (len)
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- *err_ptr = -EFAULT;
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-
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- return (__force __wsum)-1; /* invalid checksum */
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-}
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-#endif /* __ASM_SH_CHECKSUM_H */
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Paul Mundt