linux/arch/sparc/include/asm/checksum_32.h

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sparc: join the remaining header files With this commit all sparc64 header files are moved to asm-sparc. The remaining files (71 files) were too different to be trivially merged so divide them up in a _32.h and a _64.h file which are both included from the file with no bit size. The following script were used: cd include FILES=`wc -l asm-sparc64/*h | grep -v '^ 1' | cut -b 20-` for FILE in ${FILES}; do echo $FILE: BASE=`echo $FILE | cut -d '.' -f 1` FN32=${BASE}_32.h FN64=${BASE}_64.h GUARD=___ASM_SPARC_`echo $BASE | tr '-' '_' | tr [:lower:] [:upper:]`_H git mv asm-sparc/$FILE asm-sparc/$FN32 git mv asm-sparc64/$FILE asm-sparc/$FN64 echo git mv done printf "#ifndef %s\n" $GUARD > asm-sparc/$FILE printf "#define %s\n" $GUARD >> asm-sparc/$FILE printf "#if defined(__sparc__) && defined(__arch64__)\n" >> asm-sparc/$FILE printf "#include <asm-sparc/%s>\n" $FN64 >> asm-sparc/$FILE printf "#else\n" >> asm-sparc/$FILE printf "#include <asm-sparc/%s>\n" $FN32 >> asm-sparc/$FILE printf "#endif\n" >> asm-sparc/$FILE printf "#endif\n" >> asm-sparc/$FILE git add asm-sparc/$FILE echo new file done printf "#include <asm-sparc/%s>\n" $FILE > asm-sparc64/$FILE git add asm-sparc64/$FILE echo sparc64 file done done The guard contains three '_' to avoid conflict with existing guards. In additing the two Kbuild files are emptied to avoid breaking headers_* targets. We will reintroduce the exported header files when the necessary kbuild changes are merged. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-18 12:55:51 +08:00
#ifndef __SPARC_CHECKSUM_H
#define __SPARC_CHECKSUM_H
/* checksum.h: IP/UDP/TCP checksum routines on the Sparc.
*
* Copyright(C) 1995 Linus Torvalds
* Copyright(C) 1995 Miguel de Icaza
* Copyright(C) 1996 David S. Miller
* Copyright(C) 1996 Eddie C. Dost
* Copyright(C) 1997 Jakub Jelinek
*
* derived from:
* Alpha checksum c-code
* ix86 inline assembly
* RFC1071 Computing the Internet Checksum
*/
#include <linux/in6.h>
#include <asm/uaccess.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);
sparc: join the remaining header files With this commit all sparc64 header files are moved to asm-sparc. The remaining files (71 files) were too different to be trivially merged so divide them up in a _32.h and a _64.h file which are both included from the file with no bit size. The following script were used: cd include FILES=`wc -l asm-sparc64/*h | grep -v '^ 1' | cut -b 20-` for FILE in ${FILES}; do echo $FILE: BASE=`echo $FILE | cut -d '.' -f 1` FN32=${BASE}_32.h FN64=${BASE}_64.h GUARD=___ASM_SPARC_`echo $BASE | tr '-' '_' | tr [:lower:] [:upper:]`_H git mv asm-sparc/$FILE asm-sparc/$FN32 git mv asm-sparc64/$FILE asm-sparc/$FN64 echo git mv done printf "#ifndef %s\n" $GUARD > asm-sparc/$FILE printf "#define %s\n" $GUARD >> asm-sparc/$FILE printf "#if defined(__sparc__) && defined(__arch64__)\n" >> asm-sparc/$FILE printf "#include <asm-sparc/%s>\n" $FN64 >> asm-sparc/$FILE printf "#else\n" >> asm-sparc/$FILE printf "#include <asm-sparc/%s>\n" $FN32 >> asm-sparc/$FILE printf "#endif\n" >> asm-sparc/$FILE printf "#endif\n" >> asm-sparc/$FILE git add asm-sparc/$FILE echo new file done printf "#include <asm-sparc/%s>\n" $FILE > asm-sparc64/$FILE git add asm-sparc64/$FILE echo sparc64 file done done The guard contains three '_' to avoid conflict with existing guards. In additing the two Kbuild files are emptied to avoid breaking headers_* targets. We will reintroduce the exported header files when the necessary kbuild changes are merged. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-18 12:55:51 +08:00
/* the same as csum_partial, but copies from fs:src while it
* checksums
*
* here even more important to align src and dst on a 32-bit (or even
* better 64-bit) boundary
*/
unsigned int __csum_partial_copy_sparc_generic (const unsigned char *, unsigned char *);
sparc: join the remaining header files With this commit all sparc64 header files are moved to asm-sparc. The remaining files (71 files) were too different to be trivially merged so divide them up in a _32.h and a _64.h file which are both included from the file with no bit size. The following script were used: cd include FILES=`wc -l asm-sparc64/*h | grep -v '^ 1' | cut -b 20-` for FILE in ${FILES}; do echo $FILE: BASE=`echo $FILE | cut -d '.' -f 1` FN32=${BASE}_32.h FN64=${BASE}_64.h GUARD=___ASM_SPARC_`echo $BASE | tr '-' '_' | tr [:lower:] [:upper:]`_H git mv asm-sparc/$FILE asm-sparc/$FN32 git mv asm-sparc64/$FILE asm-sparc/$FN64 echo git mv done printf "#ifndef %s\n" $GUARD > asm-sparc/$FILE printf "#define %s\n" $GUARD >> asm-sparc/$FILE printf "#if defined(__sparc__) && defined(__arch64__)\n" >> asm-sparc/$FILE printf "#include <asm-sparc/%s>\n" $FN64 >> asm-sparc/$FILE printf "#else\n" >> asm-sparc/$FILE printf "#include <asm-sparc/%s>\n" $FN32 >> asm-sparc/$FILE printf "#endif\n" >> asm-sparc/$FILE printf "#endif\n" >> asm-sparc/$FILE git add asm-sparc/$FILE echo new file done printf "#include <asm-sparc/%s>\n" $FILE > asm-sparc64/$FILE git add asm-sparc64/$FILE echo sparc64 file done done The guard contains three '_' to avoid conflict with existing guards. In additing the two Kbuild files are emptied to avoid breaking headers_* targets. We will reintroduce the exported header files when the necessary kbuild changes are merged. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-18 12:55:51 +08:00
static inline __wsum
csum_partial_copy_nocheck(const void *src, void *dst, int len, __wsum sum)
{
register unsigned int ret asm("o0") = (unsigned int)src;
register char *d asm("o1") = dst;
register int l asm("g1") = len;
__asm__ __volatile__ (
"call __csum_partial_copy_sparc_generic\n\t"
" mov %6, %%g7\n"
: "=&r" (ret), "=&r" (d), "=&r" (l)
: "0" (ret), "1" (d), "2" (l), "r" (sum)
: "o2", "o3", "o4", "o5", "o7",
"g2", "g3", "g4", "g5", "g7",
"memory", "cc");
return (__force __wsum)ret;
}
static inline __wsum
csum_partial_copy_from_user(const void __user *src, void *dst, int len,
__wsum sum, int *err)
{
register unsigned long ret asm("o0") = (unsigned long)src;
register char *d asm("o1") = dst;
register int l asm("g1") = len;
register __wsum s asm("g7") = sum;
__asm__ __volatile__ (
".section __ex_table,#alloc\n\t"
".align 4\n\t"
".word 1f,2\n\t"
".previous\n"
"1:\n\t"
"call __csum_partial_copy_sparc_generic\n\t"
" st %8, [%%sp + 64]\n"
: "=&r" (ret), "=&r" (d), "=&r" (l), "=&r" (s)
: "0" (ret), "1" (d), "2" (l), "3" (s), "r" (err)
: "o2", "o3", "o4", "o5", "o7", "g2", "g3", "g4", "g5",
"cc", "memory");
return (__force __wsum)ret;
}
static inline __wsum
csum_partial_copy_to_user(const void *src, void __user *dst, int len,
__wsum sum, int *err)
{
if (!access_ok (VERIFY_WRITE, dst, len)) {
*err = -EFAULT;
return sum;
} else {
register unsigned long ret asm("o0") = (unsigned long)src;
register char __user *d asm("o1") = dst;
register int l asm("g1") = len;
register __wsum s asm("g7") = sum;
__asm__ __volatile__ (
".section __ex_table,#alloc\n\t"
".align 4\n\t"
".word 1f,1\n\t"
".previous\n"
"1:\n\t"
"call __csum_partial_copy_sparc_generic\n\t"
" st %8, [%%sp + 64]\n"
: "=&r" (ret), "=&r" (d), "=&r" (l), "=&r" (s)
: "0" (ret), "1" (d), "2" (l), "3" (s), "r" (err)
: "o2", "o3", "o4", "o5", "o7",
"g2", "g3", "g4", "g5",
"cc", "memory");
return (__force __wsum)ret;
}
}
#define HAVE_CSUM_COPY_USER
#define csum_and_copy_to_user csum_partial_copy_to_user
/* ihl is always 5 or greater, almost always is 5, and iph is word aligned
* the majority of the time.
*/
static inline __sum16 ip_fast_csum(const void *iph, unsigned int ihl)
{
__sum16 sum;
/* Note: We must read %2 before we touch %0 for the first time,
* because GCC can legitimately use the same register for
* both operands.
*/
__asm__ __volatile__("sub\t%2, 4, %%g4\n\t"
"ld\t[%1 + 0x00], %0\n\t"
"ld\t[%1 + 0x04], %%g2\n\t"
"ld\t[%1 + 0x08], %%g3\n\t"
"addcc\t%%g2, %0, %0\n\t"
"addxcc\t%%g3, %0, %0\n\t"
"ld\t[%1 + 0x0c], %%g2\n\t"
"ld\t[%1 + 0x10], %%g3\n\t"
"addxcc\t%%g2, %0, %0\n\t"
"addx\t%0, %%g0, %0\n"
"1:\taddcc\t%%g3, %0, %0\n\t"
"add\t%1, 4, %1\n\t"
"addxcc\t%0, %%g0, %0\n\t"
"subcc\t%%g4, 1, %%g4\n\t"
"be,a\t2f\n\t"
"sll\t%0, 16, %%g2\n\t"
"b\t1b\n\t"
"ld\t[%1 + 0x10], %%g3\n"
"2:\taddcc\t%0, %%g2, %%g2\n\t"
"srl\t%%g2, 16, %0\n\t"
"addx\t%0, %%g0, %0\n\t"
"xnor\t%%g0, %0, %0"
: "=r" (sum), "=&r" (iph)
: "r" (ihl), "1" (iph)
: "g2", "g3", "g4", "cc", "memory");
return sum;
}
/* Fold a partial checksum without adding pseudo headers. */
static inline __sum16 csum_fold(__wsum sum)
{
unsigned int tmp;
__asm__ __volatile__("addcc\t%0, %1, %1\n\t"
"srl\t%1, 16, %1\n\t"
"addx\t%1, %%g0, %1\n\t"
"xnor\t%%g0, %1, %0"
: "=&r" (sum), "=r" (tmp)
: "0" (sum), "1" ((__force u32)sum<<16)
: "cc");
return (__force __sum16)sum;
}
static inline __wsum csum_tcpudp_nofold(__be32 saddr, __be32 daddr,
ipv4: Update parameters for csum_tcpudp_magic to their original types This patch updates all instances of csum_tcpudp_magic and csum_tcpudp_nofold to reflect the types that are usually used as the source inputs. For example the protocol field is populated based on nexthdr which is actually an unsigned 8 bit value. The length is usually populated based on skb->len which is an unsigned integer. This addresses an issue in which the IPv6 function csum_ipv6_magic was generating a checksum using the full 32b of skb->len while csum_tcpudp_magic was only using the lower 16 bits. As a result we could run into issues when attempting to adjust the checksum as there was no protocol agnostic way to update it. With this change the value is still truncated as many architectures use "(len + proto) << 8", however this truncation only occurs for values greater than 16776960 in length and as such is unlikely to occur as we stop the inner headers at ~64K in size. I did have to make a few minor changes in the arm, mn10300, nios2, and score versions of the function in order to support these changes as they were either using things such as an OR to combine the protocol and length, or were using ntohs to convert the length which would have truncated the value. I also updated a few spots in terms of whitespace and type differences for the addresses. Most of this was just to make sure all of the definitions were in sync going forward. Signed-off-by: Alexander Duyck <aduyck@mirantis.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-12 06:05:34 +08:00
__u32 len, __u8 proto,
__wsum sum)
sparc: join the remaining header files With this commit all sparc64 header files are moved to asm-sparc. The remaining files (71 files) were too different to be trivially merged so divide them up in a _32.h and a _64.h file which are both included from the file with no bit size. The following script were used: cd include FILES=`wc -l asm-sparc64/*h | grep -v '^ 1' | cut -b 20-` for FILE in ${FILES}; do echo $FILE: BASE=`echo $FILE | cut -d '.' -f 1` FN32=${BASE}_32.h FN64=${BASE}_64.h GUARD=___ASM_SPARC_`echo $BASE | tr '-' '_' | tr [:lower:] [:upper:]`_H git mv asm-sparc/$FILE asm-sparc/$FN32 git mv asm-sparc64/$FILE asm-sparc/$FN64 echo git mv done printf "#ifndef %s\n" $GUARD > asm-sparc/$FILE printf "#define %s\n" $GUARD >> asm-sparc/$FILE printf "#if defined(__sparc__) && defined(__arch64__)\n" >> asm-sparc/$FILE printf "#include <asm-sparc/%s>\n" $FN64 >> asm-sparc/$FILE printf "#else\n" >> asm-sparc/$FILE printf "#include <asm-sparc/%s>\n" $FN32 >> asm-sparc/$FILE printf "#endif\n" >> asm-sparc/$FILE printf "#endif\n" >> asm-sparc/$FILE git add asm-sparc/$FILE echo new file done printf "#include <asm-sparc/%s>\n" $FILE > asm-sparc64/$FILE git add asm-sparc64/$FILE echo sparc64 file done done The guard contains three '_' to avoid conflict with existing guards. In additing the two Kbuild files are emptied to avoid breaking headers_* targets. We will reintroduce the exported header files when the necessary kbuild changes are merged. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-18 12:55:51 +08:00
{
__asm__ __volatile__("addcc\t%1, %0, %0\n\t"
"addxcc\t%2, %0, %0\n\t"
"addxcc\t%3, %0, %0\n\t"
"addx\t%0, %%g0, %0\n\t"
: "=r" (sum), "=r" (saddr)
: "r" (daddr), "r" (proto + len), "0" (sum),
"1" (saddr)
: "cc");
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,
ipv4: Update parameters for csum_tcpudp_magic to their original types This patch updates all instances of csum_tcpudp_magic and csum_tcpudp_nofold to reflect the types that are usually used as the source inputs. For example the protocol field is populated based on nexthdr which is actually an unsigned 8 bit value. The length is usually populated based on skb->len which is an unsigned integer. This addresses an issue in which the IPv6 function csum_ipv6_magic was generating a checksum using the full 32b of skb->len while csum_tcpudp_magic was only using the lower 16 bits. As a result we could run into issues when attempting to adjust the checksum as there was no protocol agnostic way to update it. With this change the value is still truncated as many architectures use "(len + proto) << 8", however this truncation only occurs for values greater than 16776960 in length and as such is unlikely to occur as we stop the inner headers at ~64K in size. I did have to make a few minor changes in the arm, mn10300, nios2, and score versions of the function in order to support these changes as they were either using things such as an OR to combine the protocol and length, or were using ntohs to convert the length which would have truncated the value. I also updated a few spots in terms of whitespace and type differences for the addresses. Most of this was just to make sure all of the definitions were in sync going forward. Signed-off-by: Alexander Duyck <aduyck@mirantis.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-12 06:05:34 +08:00
__u32 len, __u8 proto,
__wsum sum)
sparc: join the remaining header files With this commit all sparc64 header files are moved to asm-sparc. The remaining files (71 files) were too different to be trivially merged so divide them up in a _32.h and a _64.h file which are both included from the file with no bit size. The following script were used: cd include FILES=`wc -l asm-sparc64/*h | grep -v '^ 1' | cut -b 20-` for FILE in ${FILES}; do echo $FILE: BASE=`echo $FILE | cut -d '.' -f 1` FN32=${BASE}_32.h FN64=${BASE}_64.h GUARD=___ASM_SPARC_`echo $BASE | tr '-' '_' | tr [:lower:] [:upper:]`_H git mv asm-sparc/$FILE asm-sparc/$FN32 git mv asm-sparc64/$FILE asm-sparc/$FN64 echo git mv done printf "#ifndef %s\n" $GUARD > asm-sparc/$FILE printf "#define %s\n" $GUARD >> asm-sparc/$FILE printf "#if defined(__sparc__) && defined(__arch64__)\n" >> asm-sparc/$FILE printf "#include <asm-sparc/%s>\n" $FN64 >> asm-sparc/$FILE printf "#else\n" >> asm-sparc/$FILE printf "#include <asm-sparc/%s>\n" $FN32 >> asm-sparc/$FILE printf "#endif\n" >> asm-sparc/$FILE printf "#endif\n" >> asm-sparc/$FILE git add asm-sparc/$FILE echo new file done printf "#include <asm-sparc/%s>\n" $FILE > asm-sparc64/$FILE git add asm-sparc64/$FILE echo sparc64 file done done The guard contains three '_' to avoid conflict with existing guards. In additing the two Kbuild files are emptied to avoid breaking headers_* targets. We will reintroduce the exported header files when the necessary kbuild changes are merged. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-18 12:55:51 +08:00
{
return csum_fold(csum_tcpudp_nofold(saddr,daddr,len,proto,sum));
}
#define _HAVE_ARCH_IPV6_CSUM
static inline __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
const struct in6_addr *daddr,
__u32 len, __u8 proto, __wsum sum)
sparc: join the remaining header files With this commit all sparc64 header files are moved to asm-sparc. The remaining files (71 files) were too different to be trivially merged so divide them up in a _32.h and a _64.h file which are both included from the file with no bit size. The following script were used: cd include FILES=`wc -l asm-sparc64/*h | grep -v '^ 1' | cut -b 20-` for FILE in ${FILES}; do echo $FILE: BASE=`echo $FILE | cut -d '.' -f 1` FN32=${BASE}_32.h FN64=${BASE}_64.h GUARD=___ASM_SPARC_`echo $BASE | tr '-' '_' | tr [:lower:] [:upper:]`_H git mv asm-sparc/$FILE asm-sparc/$FN32 git mv asm-sparc64/$FILE asm-sparc/$FN64 echo git mv done printf "#ifndef %s\n" $GUARD > asm-sparc/$FILE printf "#define %s\n" $GUARD >> asm-sparc/$FILE printf "#if defined(__sparc__) && defined(__arch64__)\n" >> asm-sparc/$FILE printf "#include <asm-sparc/%s>\n" $FN64 >> asm-sparc/$FILE printf "#else\n" >> asm-sparc/$FILE printf "#include <asm-sparc/%s>\n" $FN32 >> asm-sparc/$FILE printf "#endif\n" >> asm-sparc/$FILE printf "#endif\n" >> asm-sparc/$FILE git add asm-sparc/$FILE echo new file done printf "#include <asm-sparc/%s>\n" $FILE > asm-sparc64/$FILE git add asm-sparc64/$FILE echo sparc64 file done done The guard contains three '_' to avoid conflict with existing guards. In additing the two Kbuild files are emptied to avoid breaking headers_* targets. We will reintroduce the exported header files when the necessary kbuild changes are merged. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-18 12:55:51 +08:00
{
__asm__ __volatile__ (
"addcc %3, %4, %%g4\n\t"
"addxcc %5, %%g4, %%g4\n\t"
"ld [%2 + 0x0c], %%g2\n\t"
"ld [%2 + 0x08], %%g3\n\t"
"addxcc %%g2, %%g4, %%g4\n\t"
"ld [%2 + 0x04], %%g2\n\t"
"addxcc %%g3, %%g4, %%g4\n\t"
"ld [%2 + 0x00], %%g3\n\t"
"addxcc %%g2, %%g4, %%g4\n\t"
"ld [%1 + 0x0c], %%g2\n\t"
"addxcc %%g3, %%g4, %%g4\n\t"
"ld [%1 + 0x08], %%g3\n\t"
"addxcc %%g2, %%g4, %%g4\n\t"
"ld [%1 + 0x04], %%g2\n\t"
"addxcc %%g3, %%g4, %%g4\n\t"
"ld [%1 + 0x00], %%g3\n\t"
"addxcc %%g2, %%g4, %%g4\n\t"
"addxcc %%g3, %%g4, %0\n\t"
"addx 0, %0, %0\n"
: "=&r" (sum)
: "r" (saddr), "r" (daddr),
"r"(htonl(len)), "r"(htonl(proto)), "r"(sum)
: "g2", "g3", "g4", "cc");
return csum_fold(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_CSUM_ADD
static inline __wsum csum_add(__wsum csum, __wsum addend)
{
__asm__ __volatile__(
"addcc %0, %1, %0\n"
"addx %0, %%g0, %0"
: "=r" (csum)
: "r" (addend), "0" (csum));
return csum;
}
sparc: join the remaining header files With this commit all sparc64 header files are moved to asm-sparc. The remaining files (71 files) were too different to be trivially merged so divide them up in a _32.h and a _64.h file which are both included from the file with no bit size. The following script were used: cd include FILES=`wc -l asm-sparc64/*h | grep -v '^ 1' | cut -b 20-` for FILE in ${FILES}; do echo $FILE: BASE=`echo $FILE | cut -d '.' -f 1` FN32=${BASE}_32.h FN64=${BASE}_64.h GUARD=___ASM_SPARC_`echo $BASE | tr '-' '_' | tr [:lower:] [:upper:]`_H git mv asm-sparc/$FILE asm-sparc/$FN32 git mv asm-sparc64/$FILE asm-sparc/$FN64 echo git mv done printf "#ifndef %s\n" $GUARD > asm-sparc/$FILE printf "#define %s\n" $GUARD >> asm-sparc/$FILE printf "#if defined(__sparc__) && defined(__arch64__)\n" >> asm-sparc/$FILE printf "#include <asm-sparc/%s>\n" $FN64 >> asm-sparc/$FILE printf "#else\n" >> asm-sparc/$FILE printf "#include <asm-sparc/%s>\n" $FN32 >> asm-sparc/$FILE printf "#endif\n" >> asm-sparc/$FILE printf "#endif\n" >> asm-sparc/$FILE git add asm-sparc/$FILE echo new file done printf "#include <asm-sparc/%s>\n" $FILE > asm-sparc64/$FILE git add asm-sparc64/$FILE echo sparc64 file done done The guard contains three '_' to avoid conflict with existing guards. In additing the two Kbuild files are emptied to avoid breaking headers_* targets. We will reintroduce the exported header files when the necessary kbuild changes are merged. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-07-18 12:55:51 +08:00
#endif /* !(__SPARC_CHECKSUM_H) */