[NET]: M68K checksum annotations and cleanups.

* sanitize prototypes, annotate

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

1 files changed, 22 insertions, 24 deletions

diff --git a/include/asm-m68k/checksum.h b/include/asm-m68k/checksum.h
index 17280ef719f5..494f9aec37ea 100644
--- a/include/asm-m68k/checksum.h
+++ b/include/asm-m68k/checksum.h
@@ -15,7 +15,7 @@
  *
  * 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
@@ -25,22 +25,21 @@ unsigned int csum_partial(const unsigned char * buff, int len, unsigned int sum)
  * better 64-bit) boundary
  */
 
-extern unsigned int csum_partial_copy_from_user(const unsigned char __user *src,
-                                                unsigned char *dst,
-                                                int len, int sum,
+extern __wsum csum_partial_copy_from_user(const void __user *src,
+                                                void *dst,
+                                                int len, __wsum sum,
                                                 int *csum_err);
 
-extern unsigned int csum_partial_copy_nocheck(const unsigned char *src,
-                                              unsigned char *dst, int len,
-                                              int sum);
+extern __wsum csum_partial_copy_nocheck(const void *src,
+                                              void *dst, int len,
+                                              __wsum sum);
 
 /*
  *      This is a version of ip_compute_csum() optimized for IP headers,
  *      which always checksum on 4 octet boundaries.
  *
  */
-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 = 0;
         unsigned long tmp;
@@ -58,29 +57,29 @@ ip_fast_csum(unsigned char *iph, unsigned int ihl)
                  : "=d" (sum), "=&a" (iph), "=&d" (ihl), "=&d" (tmp)
                  : "0" (sum), "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)
 {
-        unsigned int tmp = sum;
+        unsigned int tmp = (__force u32)sum;
         __asm__("swap %1\n\t"
                 "addw %1, %0\n\t"
                 "clrw %1\n\t"
                 "addxw %1, %0"
                 : "=&d" (sum), "=&d" (tmp)
                 : "0" (sum), "1" (tmp));
-        return ~sum;
+        return (__force __sum16)~sum;
 }
 
 
-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__ ("addl  %2,%0\n\t"
                  "addxl %3,%0\n\t"
@@ -98,9 +97,9 @@ csum_tcpudp_nofold(unsigned long saddr, unsigned long daddr, unsigned short len,
  * 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));
 }
@@ -110,16 +109,15 @@ csum_tcpudp_magic(unsigned long saddr, unsigned long daddr, unsigned short len,
  * 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)
 {
         register unsigned long tmp;
         __asm__("addl %2@,%0\n\t"