[NET]: FRV checksum annotations.

* sanitize prototypes and annotate
* collapse csum_partial_copy

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/arch/frv/lib/checksum.c b/arch/frv/lib/checksum.c
index 2581a960d58fe916ae9c4cd149d2214dbf2569bf..44e16d59bc1085c2306519809826772bf8bafcc4 100644 (file)
--- a/arch/frv/lib/checksum.c
+++ b/arch/frv/lib/checksum.c
@@ -104,15 +104,15 @@ out:
  *
  * it's best to have buff aligned on a 32-bit boundary
  */
-unsigned int csum_partial(const unsigned char * buff, int len, unsigned int sum)
+__wsum csum_partial(const void *buff, int len, __wsum sum)
 {
        unsigned int result = do_csum(buff, len);
 
        /* add in old sum, and carry.. */
-       result += sum;
-       if (sum > result)
+       result += (__force u32)sum;
+       if ((__force u32)sum > result)
                result += 1;
-       return result;
+       return (__force __wsum)result;
 }
 
 EXPORT_SYMBOL(csum_partial);
@@ -121,9 +121,9 @@ EXPORT_SYMBOL(csum_partial);
  * this routine is used for miscellaneous IP-like checksums, mainly
  * in icmp.c
  */
-unsigned short ip_compute_csum(const unsigned char * buff, int len)
+__sum16 ip_compute_csum(const void *buff, int len)
 {
-       return ~do_csum(buff, len);
+       return (__force __sum16)~do_csum(buff, len);
 }
 
 EXPORT_SYMBOL(ip_compute_csum);
@@ -131,9 +131,9 @@ EXPORT_SYMBOL(ip_compute_csum);
 /*
  * copy from fs while checksumming, otherwise like csum_partial
  */
-unsigned int
-csum_partial_copy_from_user(const char __user *src, char *dst,
-                           int len, int sum, int *csum_err)
+__wsum
+csum_partial_copy_from_user(const void __user *src, void *dst,
+                           int len, __wsum sum, int *csum_err)
 {
        int rem;
 
@@ -156,11 +156,11 @@ EXPORT_SYMBOL(csum_partial_copy_from_user);
 /*
  * copy from ds while checksumming, otherwise like csum_partial
  */
-unsigned int
-csum_partial_copy(const char *src, char *dst, int len, int sum)
+__wsum
+csum_partial_copy_nocheck(const void *src, void *dst, int len, __wsum sum)
 {
        memcpy(dst, src, len);
        return csum_partial(dst, len, sum);
 }
 
-EXPORT_SYMBOL(csum_partial_copy);
+EXPORT_SYMBOL(csum_partial_copy_nocheck);

diff --git a/include/asm-frv/checksum.h b/include/asm-frv/checksum.h
index 42bf0db2287acb898d406f99748680f327c7c5b2..9b1689850187c91a51b203a988e81e16bd2ba5f6 100644 (file)
--- a/include/asm-frv/checksum.h
+++ b/include/asm-frv/checksum.h
@@ -26,7 +26,7 @@
  *
  * it's best to have buff aligned on a 32-bit boundary
  */
-unsigned int csum_partial(const unsigned char * buff, int len, unsigned int sum);
+__wsum csum_partial(const void *buff, int len, __wsum sum);
 
 /*
  * the same as csum_partial, but copies from src while it
@@ -35,7 +35,7 @@ unsigned int csum_partial(const unsigned char * buff, int len, unsigned int sum)
  * here even more important to align src and dst on a 32-bit (or even
  * better 64-bit) boundary
  */
-unsigned int csum_partial_copy(const char *src, char *dst, int len, int sum);
+__wsum csum_partial_copy_nocheck(const void *src, void *dst, int len, __wsum sum);
 
 /*
  * the same as csum_partial_copy, but copies from user space.
@@ -43,11 +43,8 @@ unsigned int csum_partial_copy(const char *src, char *dst, int len, int sum);
  * here even more important to align src and dst on a 32-bit (or even
  * better 64-bit) boundary
  */
-extern unsigned int csum_partial_copy_from_user(const char __user *src, char *dst,
-                                               int len, int sum, int *csum_err);
-
-#define csum_partial_copy_nocheck(src, dst, len, sum)  \
-       csum_partial_copy((src), (dst), (len), (sum))
+extern __wsum csum_partial_copy_from_user(const void __user *src, void *dst,
+                                               int len, __wsum sum, int *csum_err);
 
 /*
  *     This is a version of ip_compute_csum() optimized for IP headers,
@@ -55,7 +52,7 @@ extern unsigned int csum_partial_copy_from_user(const char __user *src, char *ds
  *
  */
 static inline
-unsigned short ip_fast_csum(unsigned char *iph, unsigned int ihl)
+__sum16 ip_fast_csum(const void *iph, unsigned int ihl)
 {
        unsigned int tmp, inc, sum = 0;
 
@@ -81,13 +78,13 @@ unsigned short ip_fast_csum(unsigned char *iph, unsigned int ihl)
            : "icc0", "icc1"
            );
 
-       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)
 {
        unsigned int tmp;
 
@@ -100,16 +97,16 @@ static inline unsigned int csum_fold(unsigned int sum)
            : "0"(sum)
            );
 
-       return ~sum;
+       return (__force __sum16)~sum;
 }
 
 /*
  * computes the checksum of the TCP/UDP pseudo-header
  * returns a 16-bit checksum, already complemented
  */
-static inline unsigned int
-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("   addcc           %1,%0,%0,icc0   \n"
            "   addxcc          %2,%0,%0,icc0   \n"
@@ -122,9 +119,9 @@ csum_tcpudp_nofold(unsigned long saddr, unsigned long daddr, unsigned short len,
        return sum;
 }
 
-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));
 }
@@ -133,12 +130,12 @@ csum_tcpudp_magic(unsigned long saddr, unsigned long daddr, unsigned short len,
  * this routine is used for miscellaneous IP-like checksums, mainly
  * in icmp.c
  */
-extern unsigned short ip_compute_csum(const unsigned char * buff, int len);
+extern __sum16 ip_compute_csum(const void *buff, int len);
 
 #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 long tmp, tmp2;
 
@@ -177,7 +174,7 @@ csum_ipv6_magic(struct in6_addr *saddr, struct in6_addr *daddr,
            : "icc0"
            );
 
-       return ~sum;
+       return (__force __sum16)~sum;
 }
 
 #endif /* _ASM_CHECKSUM_H */