summaryrefslogtreecommitdiff
path: root/include/asm-ia64/checksum.h
diff options
context:
space:
mode:
authorAl Viro <viro@zeniv.linux.org.uk>2006-11-14 21:16:30 -0800
committerDavid S. Miller <davem@sunset.davemloft.net>2006-12-02 21:23:05 -0800
commit322529961e3b3e64fdf1a3e46a45294456c91acf (patch)
tree94f029cb2fce7d2672e1bba0e80a47a0bb170d0c /include/asm-ia64/checksum.h
parentdb521083bcb75505e9c3e21cbabe8274ee0daea6 (diff)
downloadlwn-322529961e3b3e64fdf1a3e46a45294456c91acf.tar.gz
lwn-322529961e3b3e64fdf1a3e46a45294456c91acf.zip
[NET]: IA64 checksum annotations and cleanups.
* sanitize prototypes, annotate * ntohs -> shift in checksum calculations * kill access_ok() in csum_partial_copy_from_user * collapse do_csum_partial_copy_from_user Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/asm-ia64/checksum.h')
-rw-r--r--include/asm-ia64/checksum.h31
1 files changed, 14 insertions, 17 deletions
diff --git a/include/asm-ia64/checksum.h b/include/asm-ia64/checksum.h
index 1f230ff8ea81..bd40f4756ce1 100644
--- a/include/asm-ia64/checksum.h
+++ b/include/asm-ia64/checksum.h
@@ -10,23 +10,21 @@
* This is a version of ip_compute_csum() optimized for IP headers,
* which always checksum on 4 octet boundaries.
*/
-extern unsigned short ip_fast_csum (unsigned char * iph, unsigned int ihl);
+extern __sum16 ip_fast_csum(const void *iph, unsigned int ihl);
/*
* Computes the checksum of the TCP/UDP pseudo-header returns a 16-bit
* checksum, already complemented
*/
-extern unsigned short int csum_tcpudp_magic (unsigned long saddr,
- unsigned long daddr,
+extern __sum16 csum_tcpudp_magic (__be32 saddr, __be32 daddr,
unsigned short len,
unsigned short proto,
- unsigned int sum);
+ __wsum sum);
-extern unsigned int csum_tcpudp_nofold (unsigned long saddr,
- unsigned long daddr,
+extern __wsum csum_tcpudp_nofold (__be32 saddr, __be32 daddr,
unsigned short len,
unsigned short proto,
- unsigned int sum);
+ __wsum sum);
/*
* Computes the checksum of a memory block at buff, length len,
@@ -40,8 +38,7 @@ extern unsigned int csum_tcpudp_nofold (unsigned long saddr,
*
* it's best to have buff aligned on a 32-bit boundary
*/
-extern unsigned int csum_partial (const unsigned char * buff, int len,
- unsigned int sum);
+extern __wsum csum_partial(const void *buff, int len, __wsum sum);
/*
* Same as csum_partial, but copies from src while it checksums.
@@ -49,28 +46,28 @@ extern unsigned int csum_partial (const unsigned char * buff, int len,
* Here it is 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 *src, 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 *errp);
-extern unsigned int csum_partial_copy_nocheck (const char *src, char *dst,
- int len, unsigned int sum);
+extern __wsum csum_partial_copy_nocheck(const void *src, void *dst,
+ int len, __wsum sum);
/*
* This routine is used for miscellaneous IP-like checksums, mainly in
* icmp.c
*/
-extern unsigned short ip_compute_csum (unsigned char *buff, int len);
+extern __sum16 ip_compute_csum(const void *buff, int len);
/*
* Fold a partial checksum without adding pseudo headers.
*/
-static inline unsigned short
-csum_fold (unsigned int sum)
+static inline __sum16 csum_fold(__wsum csum)
{
+ u32 sum = (__force u32)csum;
sum = (sum & 0xffff) + (sum >> 16);
sum = (sum & 0xffff) + (sum >> 16);
- return ~sum;
+ return (__force __sum16)~sum;
}
#endif /* _ASM_IA64_CHECKSUM_H */