* Copyright (C) 1999 by Kaz Kojima & Niibe Yutaka
*/
-#include <linux/config.h>
#include <linux/in6.h>
/*
*
* it's best to have buff aligned on a 32-bit boundary
*/
-asmlinkage unsigned int csum_partial(const unsigned char * buff, int len, unsigned int sum);
+asmlinkage __wsum csum_partial(const void *buff, int len, __wsum sum);
/*
* the same as csum_partial, but copies from src while it
* better 64-bit) boundary
*/
-asmlinkage unsigned int csum_partial_copy_generic(const unsigned char *src, unsigned char *dst,
- int len, int sum, int *src_err_ptr, int *dst_err_ptr);
+asmlinkage __wsum csum_partial_copy_generic(const void *src, void *dst,
+ int len, __wsum sum,
+ int *src_err_ptr, int *dst_err_ptr);
/*
* 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
+ * 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__
-unsigned int csum_partial_copy_nocheck (const unsigned char *src, unsigned char *dst,
- int len, int sum)
+static inline
+__wsum csum_partial_copy_nocheck(const void *src, void *dst,
+ int len, __wsum sum)
{
- return csum_partial_copy_generic ( src, dst, len, sum, NULL, NULL);
+ return csum_partial_copy_generic(src, dst, len, sum, NULL, NULL);
}
-static __inline__
-unsigned int csum_partial_copy_from_user (const unsigned char *src, unsigned char *dst,
- int len, int sum, int *err_ptr)
+static inline
+__wsum csum_partial_copy_from_user(const void __user *src, void *dst,
+ int len, __wsum sum, int *err_ptr)
{
- return csum_partial_copy_generic ( src, dst, len, sum, err_ptr, NULL);
+ return csum_partial_copy_generic((__force const void *)src, dst,
+ len, sum, err_ptr, NULL);
}
/*
* Fold a partial checksum
*/
-static __inline__ unsigned int csum_fold(unsigned int sum)
+static inline __sum16 csum_fold(__wsum sum)
{
unsigned int __dummy;
__asm__("swap.w %0, %1\n\t"
: "=r" (sum), "=&r" (__dummy)
: "0" (sum)
: "t");
- return sum;
+ return (__force __sum16)sum;
}
/*
* i386 version by Jorge Cwik <jorge@laser.satlink.net>, adapted
* for linux by * Arnt Gulbrandsen.
*/
-static __inline__ unsigned short ip_fast_csum(unsigned char * iph, unsigned int ihl)
+static inline __sum16 ip_fast_csum(const void *iph, unsigned int ihl)
{
unsigned int sum, __dummy0, __dummy1;
return csum_fold(sum);
}
-static __inline__ unsigned long csum_tcpudp_nofold(unsigned long saddr,
- unsigned long daddr,
- unsigned short len,
- unsigned short proto,
- unsigned int sum)
+static inline __wsum csum_tcpudp_nofold(__be32 saddr, __be32 daddr,
+ unsigned short len,
+ unsigned short proto,
+ __wsum sum)
{
#ifdef __LITTLE_ENDIAN__
- unsigned long len_proto = (ntohs(len)<<16)+proto*256;
+ unsigned long len_proto = (proto + len) << 8;
#else
- unsigned long len_proto = (proto<<16)+len;
+ unsigned long len_proto = proto + len;
#endif
__asm__("clrt\n\t"
"addc %0, %1\n\t"
: "=r" (sum), "=r" (len_proto)
: "r" (daddr), "r" (saddr), "1" (len_proto), "0" (sum)
: "t");
+
return sum;
}
* computes the checksum of the TCP/UDP pseudo-header
* returns a 16-bit checksum, already complemented
*/
-static __inline__ unsigned short int csum_tcpudp_magic(unsigned long saddr,
- unsigned long daddr,
- unsigned short len,
- unsigned short proto,
- unsigned int sum)
+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));
+ 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__ unsigned short ip_compute_csum(unsigned char * buff, int len)
+static inline __sum16 ip_compute_csum(const void *buff, int len)
{
- return csum_fold (csum_partial(buff, len, 0));
+ return csum_fold(csum_partial(buff, len, 0));
}
#define _HAVE_ARCH_IPV6_CSUM
-static __inline__ unsigned short int csum_ipv6_magic(struct in6_addr *saddr,
- struct in6_addr *daddr,
- __u32 len,
- unsigned short proto,
- unsigned int sum)
+static inline __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
+ const struct in6_addr *daddr,
+ __u32 len, unsigned short proto,
+ __wsum sum)
{
unsigned int __dummy;
__asm__("clrt\n\t"
"movt %1\n\t"
"add %1, %0\n"
: "=r" (sum), "=&r" (__dummy)
- : "r" (saddr), "r" (daddr),
+ : "r" (saddr), "r" (daddr),
"r" (htonl(len)), "r" (htonl(proto)), "0" (sum)
: "t");
return csum_fold(sum);
}
-/*
+/*
* Copy and checksum to user
*/
#define HAVE_CSUM_COPY_USER
-static __inline__ unsigned int csum_and_copy_to_user (const unsigned char *src,
- unsigned char __user *dst,
- int len, int sum,
- int *err_ptr)
+static inline __wsum csum_and_copy_to_user(const void *src,
+ void __user *dst,
+ int len, __wsum sum,
+ int *err_ptr)
{
if (access_ok(VERIFY_WRITE, dst, len))
- return csum_partial_copy_generic(src, dst, len, sum, NULL, err_ptr);
+ return csum_partial_copy_generic((__force const void *)src,
+ dst, len, sum, NULL, err_ptr);
if (len)
*err_ptr = -EFAULT;
- return -1; /* invalid checksum */
+ return (__force __wsum)-1; /* invalid checksum */
}
#endif /* __ASM_SH_CHECKSUM_H */
git://git.onelab.eu / linux-2.6.git / blobdiff