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authorGreg Ungerer <gerg@uclinux.org>2009-07-02 16:11:58 +1000
committerGreg Ungerer <gerg@uclinux.org>2009-09-16 09:43:37 +1000
commit6192c1ea0ac5806592c5c9cc2b2b94b0298df02b (patch)
tree456489cbe5ffa011c294f84558aa1bf5d512a829 /arch/m68k/include/asm/checksum_mm.h
parent3ddc7e261a990d03fa4e78e37e6623ca45b18d77 (diff)
m68k: merge the mmu and non-mmu versions of checksum.h
The mmu and non-mmu versions of checksum.h are mostly the same, merge them. Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Diffstat (limited to 'arch/m68k/include/asm/checksum_mm.h')
-rw-r--r--arch/m68k/include/asm/checksum_mm.h148
1 files changed, 0 insertions, 148 deletions
diff --git a/arch/m68k/include/asm/checksum_mm.h b/arch/m68k/include/asm/checksum_mm.h
deleted file mode 100644
index 494f9aec37ea..000000000000
--- a/arch/m68k/include/asm/checksum_mm.h
+++ /dev/null
@@ -1,148 +0,0 @@
-#ifndef _M68K_CHECKSUM_H
-#define _M68K_CHECKSUM_H
-
-#include <linux/in6.h>
-
-/*
- * 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);
-
-/*
- * the same as csum_partial, but copies from src while it
- * checksums
- *
- * here even more important to align src and dst on a 32-bit (or even
- * better 64-bit) boundary
- */
-
-extern __wsum csum_partial_copy_from_user(const void __user *src,
- void *dst,
- int len, __wsum sum,
- int *csum_err);
-
-extern __wsum csum_partial_copy_nocheck(const void *src,
- void *dst, int len,
- __wsum sum);
-
-/*
- * This is a version of ip_compute_csum() optimized for IP headers,
- * which always checksum on 4 octet boundaries.
- *
- */
-static inline __sum16 ip_fast_csum(const void *iph, unsigned int ihl)
-{
- unsigned int sum = 0;
- unsigned long tmp;
-
- __asm__ ("subqw #1,%2\n"
- "1:\t"
- "movel %1@+,%3\n\t"
- "addxl %3,%0\n\t"
- "dbra %2,1b\n\t"
- "movel %0,%3\n\t"
- "swap %3\n\t"
- "addxw %3,%0\n\t"
- "clrw %3\n\t"
- "addxw %3,%0\n\t"
- : "=d" (sum), "=&a" (iph), "=&d" (ihl), "=&d" (tmp)
- : "0" (sum), "1" (iph), "2" (ihl)
- : "memory");
- return (__force __sum16)~sum;
-}
-
-/*
- * Fold a partial checksum
- */
-
-static inline __sum16 csum_fold(__wsum sum)
-{
- unsigned int tmp = (__force u32)sum;
- __asm__("swap %1\n\t"
- "addw %1, %0\n\t"
- "clrw %1\n\t"
- "addxw %1, %0"
- : "=&d" (sum), "=&d" (tmp)
- : "0" (sum), "1" (tmp));
- return (__force __sum16)~sum;
-}
-
-
-static inline __wsum
-csum_tcpudp_nofold(__be32 saddr, __be32 daddr, unsigned short len,
- unsigned short proto, __wsum sum)
-{
- __asm__ ("addl %2,%0\n\t"
- "addxl %3,%0\n\t"
- "addxl %4,%0\n\t"
- "clrl %1\n\t"
- "addxl %1,%0"
- : "=&d" (sum), "=d" (saddr)
- : "g" (daddr), "1" (saddr), "d" (len + proto),
- "0" (sum));
- return sum;
-}
-
-
-/*
- * computes the checksum of the TCP/UDP pseudo-header
- * returns a 16-bit checksum, already complemented
- */
-static inline __sum16
-csum_tcpudp_magic(__be32 saddr, __be32 daddr, unsigned short len,
- unsigned short proto, __wsum sum)
-{
- return csum_fold(csum_tcpudp_nofold(saddr,daddr,len,proto,sum));
-}
-
-/*
- * this routine is used for miscellaneous IP-like checksums, mainly
- * in icmp.c
- */
-
-static inline __sum16 ip_compute_csum(const void *buff, int len)
-{
- return csum_fold (csum_partial(buff, len, 0));
-}
-
-#define _HAVE_ARCH_IPV6_CSUM
-static __inline__ __sum16
-csum_ipv6_magic(const struct in6_addr *saddr, const struct in6_addr *daddr,
- __u32 len, unsigned short proto, __wsum sum)
-{
- register unsigned long tmp;
- __asm__("addl %2@,%0\n\t"
- "movel %2@(4),%1\n\t"
- "addxl %1,%0\n\t"
- "movel %2@(8),%1\n\t"
- "addxl %1,%0\n\t"
- "movel %2@(12),%1\n\t"
- "addxl %1,%0\n\t"
- "movel %3@,%1\n\t"
- "addxl %1,%0\n\t"
- "movel %3@(4),%1\n\t"
- "addxl %1,%0\n\t"
- "movel %3@(8),%1\n\t"
- "addxl %1,%0\n\t"
- "movel %3@(12),%1\n\t"
- "addxl %1,%0\n\t"
- "addxl %4,%0\n\t"
- "clrl %1\n\t"
- "addxl %1,%0"
- : "=&d" (sum), "=&d" (tmp)
- : "a" (saddr), "a" (daddr), "d" (len + proto),
- "0" (sum));
-
- return csum_fold(sum);
-}
-
-#endif /* _M68K_CHECKSUM_H */