arch: remove frv port

[sfrench/cifs-2.6.git] / arch / frv / lib / checksum.c

diff --git a/arch/frv/lib/checksum.c b/arch/frv/lib/checksum.c
deleted file mode 100644 (file)
index 44e16d5..0000000
--- a/arch/frv/lib/checksum.c
+++ /dev/null
@@ -1,166 +0,0 @@
-/*
- * INET                An implementation of the TCP/IP protocol suite for the LINUX
- *             operating system.  INET is implemented using the  BSD Socket
- *             interface as the means of communication with the user level.
- *
- *             IP/TCP/UDP checksumming routines
- *
- * Authors:    Jorge Cwik, <jorge@laser.satlink.net>
- *             Arnt Gulbrandsen, <agulbra@nvg.unit.no>
- *             Tom May, <ftom@netcom.com>
- *             Andreas Schwab, <schwab@issan.informatik.uni-dortmund.de>
- *             Lots of code moved from tcp.c and ip.c; see those files
- *             for more names.
- *
- * 03/02/96    Jes Sorensen, Andreas Schwab, Roman Hodek:
- *             Fixed some nasty bugs, causing some horrible crashes.
- *             A: At some points, the sum (%0) was used as
- *             length-counter instead of the length counter
- *             (%1). Thanks to Roman Hodek for pointing this out.
- *             B: GCC seems to mess up if one uses too many
- *             data-registers to hold input values and one tries to
- *             specify d0 and d1 as scratch registers. Letting gcc choose these
- *      registers itself solves the problem.
- *
- *             This program is free software; you can redistribute it and/or
- *             modify it under the terms of the GNU General Public License
- *             as published by the Free Software Foundation; either version
- *             2 of the License, or (at your option) any later version.
- */
-
-/* Revised by Kenneth Albanowski for m68knommu. Basic problem: unaligned access kills, so most
-   of the assembly has to go. */
-
-#include <net/checksum.h>
-#include <linux/module.h>
-
-static inline unsigned short from32to16(unsigned long x)
-{
-       /* add up 16-bit and 16-bit for 16+c bit */
-       x = (x & 0xffff) + (x >> 16);
-       /* add up carry.. */
-       x = (x & 0xffff) + (x >> 16);
-       return x;
-}
-
-static unsigned long do_csum(const unsigned char * buff, int len)
-{
-       int odd, count;
-       unsigned long result = 0;
-
-       if (len <= 0)
-               goto out;
-       odd = 1 & (unsigned long) buff;
-       if (odd) {
-               result = *buff;
-               len--;
-               buff++;
-       }
-       count = len >> 1;               /* nr of 16-bit words.. */
-       if (count) {
-               if (2 & (unsigned long) buff) {
-                       result += *(unsigned short *) buff;
-                       count--;
-                       len -= 2;
-                       buff += 2;
-               }
-               count >>= 1;            /* nr of 32-bit words.. */
-               if (count) {
-                       unsigned long carry = 0;
-                       do {
-                               unsigned long w = *(unsigned long *) buff;
-                               count--;
-                               buff += 4;
-                               result += carry;
-                               result += w;
-                               carry = (w > result);
-                       } while (count);
-                       result += carry;
-                       result = (result & 0xffff) + (result >> 16);
-               }
-               if (len & 2) {
-                       result += *(unsigned short *) buff;
-                       buff += 2;
-               }
-       }
-       if (len & 1)
-               result += (*buff << 8);
-       result = from32to16(result);
-       if (odd)
-               result = ((result >> 8) & 0xff) | ((result & 0xff) << 8);
-out:
-       return result;
-}
-
-/*
- * computes the checksum of a memory block at buff, length len,
- * and adds in "sum" (32-bit)
- *
- * returns a 32-bit number suitable for feeding into itself
- * or csum_tcpudp_magic
- *
- * this function must be called with even lengths, except
- * for the last fragment, which may be odd
- *
- * it's best to have buff aligned on a 32-bit boundary
- */
-__wsum csum_partial(const void *buff, int len, __wsum sum)
-{
-       unsigned int result = do_csum(buff, len);
-
-       /* add in old sum, and carry.. */
-       result += (__force u32)sum;
-       if ((__force u32)sum > result)
-               result += 1;
-       return (__force __wsum)result;
-}
-
-EXPORT_SYMBOL(csum_partial);
-
-/*
- * this routine is used for miscellaneous IP-like checksums, mainly
- * in icmp.c
- */
-__sum16 ip_compute_csum(const void *buff, int len)
-{
-       return (__force __sum16)~do_csum(buff, len);
-}
-
-EXPORT_SYMBOL(ip_compute_csum);
-
-/*
- * copy from fs while checksumming, otherwise like csum_partial
- */
-__wsum
-csum_partial_copy_from_user(const void __user *src, void *dst,
-                           int len, __wsum sum, int *csum_err)
-{
-       int rem;
-
-       if (csum_err)
-               *csum_err = 0;
-
-       rem = copy_from_user(dst, src, len);
-       if (rem != 0) {
-               if (csum_err)
-                       *csum_err = -EFAULT;
-               memset(dst + len - rem, 0, rem);
-               len = rem;
-       }
-
-       return csum_partial(dst, len, sum);
-}
-
-EXPORT_SYMBOL(csum_partial_copy_from_user);
-
-/*
- * copy from ds while checksumming, otherwise like csum_partial
- */
-__wsum
-csum_partial_copy_nocheck(const void *src, void *dst, int len, __wsum sum)
-{
-       memcpy(dst, src, len);
-       return csum_partial(dst, len, sum);
-}
-
-EXPORT_SYMBOL(csum_partial_copy_nocheck);