[NET]: S390 checksum annotations and cleanups.
* sanitize prototypes, annotate * kill useless shifts Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Al Viro
David S. Miller
parent
879178cfbe
commit
f994aae1bd
|
|
@ -27,8 +27,8 @@
|
|||
*
|
||||
* it's best to have buff aligned on a 32-bit boundary
|
||||
*/
|
||||
static inline unsigned int
|
||||
csum_partial(const unsigned char * buff, int len, unsigned int sum)
|
||||
static inline __wsum
|
||||
csum_partial(const void *buff, int len, __wsum sum)
|
||||
{
|
||||
register unsigned long reg2 asm("2") = (unsigned long) buff;
|
||||
register unsigned long reg3 asm("3") = (unsigned long) len;
|
||||
|
|
@ -49,9 +49,9 @@ csum_partial(const unsigned char * buff, int len, unsigned int sum)
|
|||
* Copy from userspace and compute checksum. If we catch an exception
|
||||
* then zero the rest of the buffer.
|
||||
*/
|
||||
static inline unsigned int
|
||||
csum_partial_copy_from_user(const char __user *src, char *dst,
|
||||
int len, unsigned int sum,
|
||||
static inline __wsum
|
||||
csum_partial_copy_from_user(const void __user *src, void *dst,
|
||||
int len, __wsum sum,
|
||||
int *err_ptr)
|
||||
{
|
||||
int missing;
|
||||
|
|
@ -66,8 +66,8 @@ csum_partial_copy_from_user(const char __user *src, char *dst,
|
|||
}
|
||||
|
||||
|
||||
static inline unsigned int
|
||||
csum_partial_copy_nocheck (const char *src, char *dst, int len, unsigned int sum)
|
||||
static inline __wsum
|
||||
csum_partial_copy_nocheck (const void *src, void *dst, int len, __wsum sum)
|
||||
{
|
||||
memcpy(dst,src,len);
|
||||
return csum_partial(dst, len, sum);
|
||||
|
|
@ -76,8 +76,7 @@ csum_partial_copy_nocheck (const char *src, char *dst, int len, unsigned int sum
|
|||
/*
|
||||
* Fold a partial checksum without adding pseudo headers
|
||||
*/
|
||||
static inline unsigned short
|
||||
csum_fold(unsigned int sum)
|
||||
static inline __sum16 csum_fold(__wsum sum)
|
||||
{
|
||||
#ifndef __s390x__
|
||||
register_pair rp;
|
||||
|
|
@ -100,7 +99,7 @@ csum_fold(unsigned int sum)
|
|||
" srl %0,16\n" /* %0 = H+L+C */
|
||||
: "+&d" (sum) : : "cc", "2", "3");
|
||||
#endif /* __s390x__ */
|
||||
return ((unsigned short) ~sum);
|
||||
return (__force __sum16) ~sum;
|
||||
}
|
||||
|
||||
/*
|
||||
|
|
@ -108,8 +107,7 @@ csum_fold(unsigned int sum)
|
|||
* 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)
|
||||
{
|
||||
return csum_fold(csum_partial(iph, ihl*4, 0));
|
||||
}
|
||||
|
|
@ -118,10 +116,10 @@ ip_fast_csum(unsigned char *iph, unsigned int ihl)
|
|||
* computes the checksum of the TCP/UDP pseudo-header
|
||||
* returns a 32-bit checksum
|
||||
*/
|
||||
static inline unsigned int
|
||||
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)
|
||||
{
|
||||
#ifndef __s390x__
|
||||
asm volatile(
|
||||
|
|
@ -137,12 +135,12 @@ csum_tcpudp_nofold(unsigned long saddr, unsigned long daddr,
|
|||
"1:"
|
||||
: "+&d" (sum) : "d" (daddr) : "cc");
|
||||
asm volatile(
|
||||
" alr %0,%1\n" /* sum += (len<<16) + (proto<<8) */
|
||||
" alr %0,%1\n" /* sum += len + proto */
|
||||
" brc 12,2f\n"
|
||||
" ahi %0,1\n" /* add carry */
|
||||
"2:"
|
||||
: "+&d" (sum)
|
||||
: "d" (((unsigned int) len<<16) + (unsigned int) proto)
|
||||
: "d" (len + proto)
|
||||
: "cc");
|
||||
#else /* __s390x__ */
|
||||
asm volatile(
|
||||
|
|
@ -153,7 +151,7 @@ csum_tcpudp_nofold(unsigned long saddr, unsigned long daddr,
|
|||
"0: algr %0,%2\n" /* sum += daddr */
|
||||
" brc 12,1f\n"
|
||||
" aghi %0,1\n" /* add carry */
|
||||
"1: algfr %0,%3\n" /* sum += (len<<16) + proto */
|
||||
"1: algfr %0,%3\n" /* sum += len + proto */
|
||||
" brc 12,2f\n"
|
||||
" aghi %0,1\n" /* add carry */
|
||||
"2: srlg 0,%0,32\n"
|
||||
|
|
@ -163,7 +161,7 @@ csum_tcpudp_nofold(unsigned long saddr, unsigned long daddr,
|
|||
"3: llgfr %0,%0"
|
||||
: "+&d" (sum)
|
||||
: "d" (saddr), "d" (daddr),
|
||||
"d" (((unsigned int) len<<16) + (unsigned int) proto)
|
||||
"d" (len + proto)
|
||||
: "cc", "0");
|
||||
#endif /* __s390x__ */
|
||||
return sum;
|
||||
|
|
@ -174,10 +172,10 @@ csum_tcpudp_nofold(unsigned long saddr, unsigned long daddr,
|
|||
* 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));
|
||||
}
|
||||
|
|
@ -187,8 +185,7 @@ csum_tcpudp_magic(unsigned long saddr, unsigned long daddr,
|
|||
* 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));
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue