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authorAl Viro <viro@zeniv.linux.org.uk>2006-11-14 21:16:55 -0800
committerDavid S. Miller <davem@sunset.davemloft.net>2006-12-02 21:23:06 -0800
commit85d20dee20f0958df1615e73698f6b0c525812f7 (patch)
tree47ddcace761e2c26da0dafc437cef5a2ec852183 /include/asm-m32r/checksum.h
parent[NET]: IA64 checksum annotations and cleanups. (diff)
downloadlinux-dev-85d20dee20f0958df1615e73698f6b0c525812f7.tar.xz
linux-dev-85d20dee20f0958df1615e73698f6b0c525812f7.zip
[NET]: M32R checksum annotations and cleanups.
* sanitize prototypes, annotate * ntohs -> shift in checksum calculations in l-e case * kill shift-by-16 in checksum calculations Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
-rw-r--r--include/asm-m32r/checksum.h52
1 files changed, 24 insertions, 28 deletions
diff --git a/include/asm-m32r/checksum.h b/include/asm-m32r/checksum.h
index 877ebf46e9ff..a7a7c4f44abe 100644
--- a/include/asm-m32r/checksum.h
+++ b/include/asm-m32r/checksum.h
@@ -31,8 +31,7 @@
*
* 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 checksums.
@@ -40,24 +39,22 @@ asmlinkage unsigned int csum_partial(const unsigned char *buff,
* 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_nocheck(const unsigned char *src,
- unsigned char *dst,
- int len, unsigned int sum);
+extern __wsum csum_partial_copy_nocheck(const void *src, void *dst,
+ int len, __wsum sum);
/*
* This is a new version of the above that records errors it finds in *errp,
* but continues and zeros thre rest of the buffer.
*/
-extern unsigned int csum_partial_copy_from_user(const unsigned char __user *src,
- unsigned char *dst,
- int len, unsigned int sum,
+extern __wsum csum_partial_copy_from_user(const void __user *src, void *dst,
+ int len, __wsum sum,
int *err_ptr);
/*
* Fold a partial checksum
*/
-static inline unsigned int csum_fold(unsigned int sum)
+static inline __sum16 csum_fold(__wsum sum)
{
unsigned long tmpreg;
__asm__(
@@ -72,16 +69,17 @@ static inline unsigned int csum_fold(unsigned int sum)
: "0" (sum)
: "cbit"
);
- return sum;
+ return (__force __sum16)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) {
- unsigned long sum, tmpreg0, tmpreg1;
+static inline __sum16 ip_fast_csum(const void *iph, unsigned int ihl)
+{
+ unsigned long tmpreg0, tmpreg1;
+ __wsum sum;
__asm__ __volatile__(
" ld %0, @%1+ \n"
@@ -115,16 +113,15 @@ static inline unsigned short ip_fast_csum(unsigned char * iph,
return csum_fold(sum);
}
-static inline unsigned long csum_tcpudp_nofold(unsigned long saddr,
- unsigned long daddr,
+static inline __wsum csum_tcpudp_nofold(__be32 saddr, __be32 daddr,
unsigned short len,
unsigned short proto,
- unsigned int sum)
+ __wsum sum)
{
#if defined(__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
unsigned long tmpreg;
@@ -147,11 +144,10 @@ 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));
}
@@ -161,16 +157,16 @@ 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,
- __u16 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 tmpreg0, tmpreg1, tmpreg2, tmpreg3;
__asm__(
@@ -197,7 +193,7 @@ static inline unsigned short int csum_ipv6_magic(struct in6_addr *saddr,
: "=&r" (sum), "=&r" (tmpreg0), "=&r" (tmpreg1),
"=&r" (tmpreg2), "=&r" (tmpreg3)
: "r" (saddr), "r" (daddr),
- "r" (htonl((__u32) (len))), "r" (htonl(proto)), "0" (sum)
+ "r" (htonl(len)), "r" (htonl(proto)), "0" (sum)
: "cbit"
);