diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-i386/checksum.h | 65 |
1 files changed, 31 insertions, 34 deletions
diff --git a/include/asm-i386/checksum.h b/include/asm-i386/checksum.h index 67d3630c4e8..75194abbe8e 100644 --- a/include/asm-i386/checksum.h +++ b/include/asm-i386/checksum.h @@ -17,7 +17,7 @@ * * 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 @@ -27,8 +27,8 @@ asmlinkage unsigned int csum_partial(const unsigned char * buff, int len, unsign * 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 @@ -38,18 +38,18 @@ asmlinkage unsigned int csum_partial_copy_generic(const unsigned char *src, unsi * access_ok(). */ static __inline__ -unsigned int csum_partial_copy_nocheck (const unsigned char *src, unsigned char *dst, - int len, int sum) +__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); } static __inline__ -unsigned int csum_partial_copy_from_user(const unsigned char __user *src, unsigned char *dst, - int len, int sum, int *err_ptr) +__wsum csum_partial_copy_from_user(const void __user *src, void *dst, + int len, __wsum sum, int *err_ptr) { might_sleep(); - return csum_partial_copy_generic((__force unsigned char *)src, dst, + return csum_partial_copy_generic((__force void *)src, dst, len, sum, err_ptr, NULL); } @@ -60,8 +60,7 @@ unsigned int csum_partial_copy_from_user(const unsigned char __user *src, unsign * 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; @@ -89,29 +88,29 @@ static inline unsigned short ip_fast_csum(unsigned char * iph, : "=r" (sum), "=r" (iph), "=r" (ihl) : "1" (iph), "2" (ihl) : "memory"); - return(sum); + return (__force __sum16)sum; } /* * Fold a partial checksum */ -static inline unsigned int csum_fold(unsigned int sum) +static inline __sum16 csum_fold(__wsum sum) { __asm__( "addl %1, %0 ;\n" "adcl $0xffff, %0 ;\n" : "=r" (sum) - : "r" (sum << 16), "0" (sum & 0xffff0000) + : "r" ((__force u32)sum << 16), + "0" ((__force u32)sum & 0xffff0000) ); - return (~sum) >> 16; + return (__force __sum16)(~(__force u32)sum >> 16); } -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) { __asm__( "addl %1, %0 ;\n" @@ -119,7 +118,7 @@ static inline unsigned long csum_tcpudp_nofold(unsigned long saddr, "adcl %3, %0 ;\n" "adcl $0, %0 ;\n" : "=r" (sum) - : "g" (daddr), "g"(saddr), "g"((ntohs(len)<<16)+proto*256), "0"(sum)); + : "g" (daddr), "g"(saddr), "g"((len + proto) << 8), "0"(sum)); return sum; } @@ -127,11 +126,10 @@ static inline unsigned long csum_tcpudp_nofold(unsigned long saddr, * 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, +static inline __sum16 csum_tcpudp_magic(__be32 saddr, __be32 daddr, unsigned short len, unsigned short proto, - unsigned int sum) + __wsum sum) { return csum_fold(csum_tcpudp_nofold(saddr,daddr,len,proto,sum)); } @@ -141,17 +139,16 @@ static inline unsigned short int csum_tcpudp_magic(unsigned long saddr, * 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)); } #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) { __asm__( "addl 0(%1), %0 ;\n" @@ -176,19 +173,19 @@ static __inline__ unsigned short int csum_ipv6_magic(struct in6_addr *saddr, * 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, +static __inline__ __wsum csum_and_copy_to_user(const void *src, + void __user *dst, + int len, __wsum sum, int *err_ptr) { might_sleep(); if (access_ok(VERIFY_WRITE, dst, len)) - return csum_partial_copy_generic(src, (__force unsigned char *)dst, len, sum, NULL, err_ptr); + return csum_partial_copy_generic(src, (__force void *)dst, len, sum, NULL, err_ptr); if (len) *err_ptr = -EFAULT; - return -1; /* invalid checksum */ + return (__force __wsum)-1; /* invalid checksum */ } #endif |