um/x86: merge 32 and 64bit variants of checksum.h

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>

1 files changed, 0 insertions, 125 deletions

diff --git a/arch/x86/um/asm/checksum_64.h b/arch/x86/um/asm/checksum_64.h
index a5be9031ea85..7b6cd1921573 100644
--- a/arch/x86/um/asm/checksum_64.h
+++ b/arch/x86/um/asm/checksum_64.h
@@ -5,131 +5,6 @@
 #ifndef __UM_SYSDEP_CHECKSUM_H
 #define __UM_SYSDEP_CHECKSUM_H
 
-#include "linux/string.h"
-#include "linux/in6.h"
-#include "asm/uaccess.h"
-
-extern __wsum csum_partial(const void *buff, int len, __wsum sum);
-
-/*
- *	Note: when you get a NULL pointer exception here this means someone
- *	passed in an incorrect kernel address to one of these functions.
- *
- *	If you use these functions directly please don't forget the
- *	access_ok().
- */
-
-static __inline__
-__wsum csum_partial_copy_nocheck(const void *src, void *dst,
-				       int len, __wsum sum)
-{
-	memcpy(dst, src, len);
-	return(csum_partial(dst, len, sum));
-}
-
-static __inline__
-__wsum csum_partial_copy_from_user(const void __user *src,
-                                         void *dst, int len, __wsum sum,
-                                         int *err_ptr)
-{
-        if (copy_from_user(dst, src, len)) {
-                *err_ptr = -EFAULT;
-                return (__force __wsum)-1;
-        }
-        return csum_partial(dst, len, sum);
-}
-
-/**
- * csum_fold - Fold and invert a 32bit checksum.
- * sum: 32bit unfolded sum
- *
- * Fold a 32bit running checksum to 16bit and invert it. This is usually
- * the last step before putting a checksum into a packet.
- * Make sure not to mix with 64bit checksums.
- */
-static inline __sum16 csum_fold(__wsum sum)
-{
-	__asm__(
-		"  addl %1,%0\n"
-		"  adcl $0xffff,%0"
-		: "=r" (sum)
-		: "r" ((__force u32)sum << 16),
-		  "0" ((__force u32)sum & 0xffff0000)
-	);
-	return (__force __sum16)(~(__force u32)sum >> 16);
-}
-
-/**
- * csum_tcpup_nofold - Compute an IPv4 pseudo header checksum.
- * @saddr: source address
- * @daddr: destination address
- * @len: length of packet
- * @proto: ip protocol of packet
- * @sum: initial sum to be added in (32bit unfolded)
- *
- * Returns the pseudo header checksum the input data. Result is
- * 32bit unfolded.
- */
-static inline __wsum
-csum_tcpudp_nofold(__be32 saddr, __be32 daddr, unsigned short len,
-		   unsigned short proto, __wsum sum)
-{
-	asm("  addl %1, %0\n"
-	    "  adcl %2, %0\n"
-	    "  adcl %3, %0\n"
-	    "  adcl $0, %0\n"
-		: "=r" (sum)
-	    : "g" (daddr), "g" (saddr), "g" ((len + proto) << 8), "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));
-}
-
-/**
- * ip_fast_csum - Compute the IPv4 header checksum efficiently.
- * iph: ipv4 header
- * ihl: length of header / 4
- */
-static inline __sum16 ip_fast_csum(const void *iph, unsigned int ihl)
-{
-	unsigned int sum;
-
-	asm(	"  movl (%1), %0\n"
-		"  subl $4, %2\n"
-		"  jbe 2f\n"
-		"  addl 4(%1), %0\n"
-		"  adcl 8(%1), %0\n"
-		"  adcl 12(%1), %0\n"
-		"1: adcl 16(%1), %0\n"
-		"  lea 4(%1), %1\n"
-		"  decl %2\n"
-		"  jne	1b\n"
-		"  adcl $0, %0\n"
-		"  movl %0, %2\n"
-		"  shrl $16, %0\n"
-		"  addw %w2, %w0\n"
-		"  adcl $0, %0\n"
-		"  notl %0\n"
-		"2:"
-	/* Since the input registers which are loaded with iph and ipl
-	   are modified, we must also specify them as outputs, or gcc
-	   will assume they contain their original values. */
-	: "=r" (sum), "=r" (iph), "=r" (ihl)
-	: "1" (iph), "2" (ihl)
-	: "memory");
-	return (__force __sum16)sum;
-}
-
 static inline unsigned add32_with_carry(unsigned a, unsigned b)
 {
         asm("addl %2,%0\n\t"