Skip to content

L
linux
Commit 0883e91a authored by Joe Perches's avatar Joe Perches Committed by Ingo Molnar
Browse files
Options

include/asm-x86/checksum_32.h: checkpatch cleanups - formatting only 

Signed-off-by: default avatarJoe Perches <joe@perches.com>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 3f61b19a
Hide whitespace changes
Inline Side-by-side
Showing with 75 additions and 77 deletions
include/asm-x86/checksum_32.h
View file @ 0883e91a
......@@ -28,7 +28,8 @@ asmlinkage __wsum csum_partial(const void *buff, int len, __wsum sum);
*/
asmlinkage __wsum csum_partial_copy_generic(const void *src, void *dst,
int len, __wsum sum, int *src_err_ptr, int *dst_err_ptr);
int len, __wsum sum,
int *src_err_ptr, int *dst_err_ptr);
/*
* Note: when you get a NULL pointer exception here this means someone
......@@ -37,20 +38,20 @@ asmlinkage __wsum csum_partial_copy_generic(const void *src, void *dst,
* If you use these functions directly please don't forget the
* access_ok().
*/
static __inline__
__wsum csum_partial_copy_nocheck (const void *src, void *dst,
int len, __wsum sum)
static inline __wsum csum_partial_copy_nocheck(const void *src, void *dst,
int len, __wsum sum)
{
return csum_partial_copy_generic ( src, dst, len, sum, NULL, NULL);
return csum_partial_copy_generic(src, dst, len, sum, NULL, NULL);
}
static __inline__
__wsum csum_partial_copy_from_user(const void __user *src, void *dst,
int len, __wsum sum, int *err_ptr)
static inline __wsum csum_partial_copy_from_user(const void __user *src,
void *dst,
int len, __wsum sum,
int *err_ptr)
{
might_sleep();
return csum_partial_copy_generic((__force void *)src, dst,
len, sum, err_ptr, NULL);
len, sum, err_ptr, NULL);
}
/*
......@@ -64,30 +65,29 @@ static inline __sum16 ip_fast_csum(const void *iph, unsigned int ihl)
{
unsigned int sum;
__asm__ __volatile__(
"movl (%1), %0 ;\n"
"subl $4, %2 ;\n"
"jbe 2f ;\n"
"addl 4(%1), %0 ;\n"
"adcl 8(%1), %0 ;\n"
"adcl 12(%1), %0 ;\n"
"1: adcl 16(%1), %0 ;\n"
"lea 4(%1), %1 ;\n"
"decl %2 ;\n"
"jne 1b ;\n"
"adcl $0, %0 ;\n"
"movl %0, %2 ;\n"
"shrl $16, %0 ;\n"
"addw %w2, %w0 ;\n"
"adcl $0, %0 ;\n"
"notl %0 ;\n"
"2: ;\n"
asm volatile("movl (%1), %0 ;\n"
"subl $4, %2 ;\n"
"jbe 2f ;\n"
"addl 4(%1), %0 ;\n"
"adcl 8(%1), %0 ;\n"
"adcl 12(%1), %0;\n"
"1: adcl 16(%1), %0 ;\n"
"lea 4(%1), %1 ;\n"
"decl %2 ;\n"
"jne 1b ;\n"
"adcl $0, %0 ;\n"
"movl %0, %2 ;\n"
"shrl $16, %0 ;\n"
"addw %w2, %w0 ;\n"
"adcl $0, %0 ;\n"
"notl %0 ;\n"
"2: ;\n"
/* Since the input registers which are loaded with iph and ihl
are modified, we must also specify them as outputs, or gcc
will assume they contain their original values. */
: "=r" (sum), "=r" (iph), "=r" (ihl)
: "1" (iph), "2" (ihl)
: "memory");
: "=r" (sum), "=r" (iph), "=r" (ihl)
: "1" (iph), "2" (ihl)
: "memory");
return (__force __sum16)sum;
}
......@@ -97,29 +97,27 @@ static inline __sum16 ip_fast_csum(const void *iph, unsigned int ihl)
static inline __sum16 csum_fold(__wsum sum)
{
__asm__(
"addl %1, %0 ;\n"
"adcl $0xffff, %0 ;\n"
: "=r" (sum)
: "r" ((__force u32)sum << 16),
"0" ((__force u32)sum & 0xffff0000)
);
asm("addl %1, %0 ;\n"
"adcl $0xffff, %0 ;\n"
: "=r" (sum)
: "r" ((__force u32)sum << 16),
"0" ((__force u32)sum & 0xffff0000));
return (__force __sum16)(~(__force u32)sum >> 16);
}
static inline __wsum csum_tcpudp_nofold(__be32 saddr, __be32 daddr,
unsigned short len,
unsigned short proto,
__wsum sum)
unsigned short len,
unsigned short proto,
__wsum sum)
{
__asm__(
"addl %1, %0 ;\n"
"adcl %2, %0 ;\n"
"adcl %3, %0 ;\n"
"adcl $0, %0 ;\n"
: "=r" (sum)
: "g" (daddr), "g"(saddr), "g"((len + proto) << 8), "0"(sum));
return sum;
asm("addl %1, %0 ;\n"
"adcl %2, %0 ;\n"
"adcl %3, %0 ;\n"
"adcl $0, %0 ;\n"
: "=r" (sum)
: "g" (daddr), "g"(saddr),
"g" ((len + proto) << 8), "0" (sum));
return sum;
}
/*
......@@ -127,11 +125,11 @@ static inline __wsum csum_tcpudp_nofold(__be32 saddr, __be32 daddr,
* returns a 16-bit checksum, already complemented
*/
static inline __sum16 csum_tcpudp_magic(__be32 saddr, __be32 daddr,
unsigned short len,
unsigned short proto,
__wsum sum)
unsigned short len,
unsigned short proto,
__wsum sum)
{
return csum_fold(csum_tcpudp_nofold(saddr,daddr,len,proto,sum));
return csum_fold(csum_tcpudp_nofold(saddr, daddr, len, proto, sum));
}
/*
......@@ -141,30 +139,29 @@ static inline __sum16 csum_tcpudp_magic(__be32 saddr, __be32 daddr,
static inline __sum16 ip_compute_csum(const void *buff, int len)
{
return csum_fold (csum_partial(buff, len, 0));
return csum_fold(csum_partial(buff, len, 0));
}
#define _HAVE_ARCH_IPV6_CSUM
static __inline__ __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
const struct in6_addr *daddr,
__u32 len, unsigned short proto,
__wsum sum)
static inline __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
const struct in6_addr *daddr,
__u32 len, unsigned short proto,
__wsum sum)
{
__asm__(
"addl 0(%1), %0 ;\n"
"adcl 4(%1), %0 ;\n"
"adcl 8(%1), %0 ;\n"
"adcl 12(%1), %0 ;\n"
"adcl 0(%2), %0 ;\n"
"adcl 4(%2), %0 ;\n"
"adcl 8(%2), %0 ;\n"
"adcl 12(%2), %0 ;\n"
"adcl %3, %0 ;\n"
"adcl %4, %0 ;\n"
"adcl $0, %0 ;\n"
: "=&r" (sum)
: "r" (saddr), "r" (daddr),
"r"(htonl(len)), "r"(htonl(proto)), "0"(sum));
asm("addl 0(%1), %0 ;\n"
"adcl 4(%1), %0 ;\n"
"adcl 8(%1), %0 ;\n"
"adcl 12(%1), %0 ;\n"
"adcl 0(%2), %0 ;\n"
"adcl 4(%2), %0 ;\n"
"adcl 8(%2), %0 ;\n"
"adcl 12(%2), %0 ;\n"
"adcl %3, %0 ;\n"
"adcl %4, %0 ;\n"
"adcl $0, %0 ;\n"
: "=&r" (sum)
: "r" (saddr), "r" (daddr),
"r" (htonl(len)), "r" (htonl(proto)), "0" (sum));
return csum_fold(sum);
}
......@@ -173,14 +170,15 @@ static __inline__ __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
* Copy and checksum to user
*/
#define HAVE_CSUM_COPY_USER
static __inline__ __wsum csum_and_copy_to_user(const void *src,
void __user *dst,
int len, __wsum sum,
int *err_ptr)
static inline __wsum csum_and_copy_to_user(const void *src,
void __user *dst,
int len, __wsum sum,
int *err_ptr)
{
might_sleep();
if (access_ok(VERIFY_WRITE, dst, len))
return csum_partial_copy_generic(src, (__force void *)dst, len, sum, NULL, err_ptr);
return csum_partial_copy_generic(src, (__force void *)dst,
len, sum, NULL, err_ptr);
if (len)
*err_ptr = -EFAULT;
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment
GitLab Nexedi Edition | About GitLab | About Nexedi | 沪ICP备2021021310号-2 | 沪ICP备2021021310号-7