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ipv6: Pass proto to csum_ipv6_magic as __u8 instead of unsigned short

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This patch updates csum_ipv6_magic so that it correctly recognizes that
protocol is a unsigned 8 bit value.

This will allow us to better understand what limitations may or may not be
present in how we handle the data.  For example there are a number of
places that call htonl on the protocol value.  This is likely not necessary
and can be replaced with a multiplication by ntohl(1) which will be
converted to a shift by the compiler.

Signed-off-by: Alexander Duyck <aduyck@mirantis.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alexander Duyck 2016-03-11 14:05:41 -08:00 committed by David S. Miller
parent 01cfbad79a
commit 1e94082963
18 changed files with 21 additions and 29 deletions
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3
arch/alpha/include/asm/checksum.h
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@ -67,6 +67,5 @@ static inline __sum16 csum_fold(__wsum csum)
#define _HAVE_ARCH_IPV6_CSUM
extern __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
const struct in6_addr *daddr,
__u32 len, unsigned short proto,
__wsum sum);
__u32 len, __u8 proto, __wsum sum);
#endif

4
arch/arm/include/asm/checksum.h
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@ -144,8 +144,8 @@ __csum_ipv6_magic(const struct in6_addr *saddr, const struct in6_addr *daddr, __
__be32 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)
csum_ipv6_magic(const struct in6_addr *saddr, const struct in6_addr *daddr,
__u32 len, __u8 proto, __wsum sum)
{
return csum_fold(__csum_ipv6_magic(saddr, daddr, htonl(len),
htonl(proto), sum));

2
arch/frv/include/asm/checksum.h
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@ -135,7 +135,7 @@ extern __sum16 ip_compute_csum(const void *buff, int len);
#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)
__u32 len, __u8 proto, __wsum sum)
{
unsigned long tmp, tmp2;

4
arch/ia64/include/asm/checksum.h
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@ -69,7 +69,7 @@ static inline __sum16 csum_fold(__wsum csum)
#define _HAVE_ARCH_IPV6_CSUM 1
struct in6_addr;
extern __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
const struct in6_addr *daddr, __u32 len, unsigned short proto,
__wsum csum);
const struct in6_addr *daddr,
__u32 len, __u8 proto, __wsum csum);
#endif /* _ASM_IA64_CHECKSUM_H */

2
arch/m68k/include/asm/checksum.h
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@ -117,7 +117,7 @@ static inline __sum16 ip_compute_csum(const void *buff, int len)
#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)
__u32 len, __u8 proto, __wsum sum)
{
register unsigned long tmp;
__asm__("addl %2@,%0\n\t"

2
arch/mips/include/asm/checksum.h
View File

@ -215,7 +215,7 @@ static inline __sum16 ip_compute_csum(const void *buff, int len)
#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,
__u32 len, __u8 proto,
__wsum sum)
{
__wsum tmp;

2
arch/parisc/include/asm/checksum.h
View File

@ -122,7 +122,7 @@ static inline __sum16 ip_compute_csum(const void *buf, int len)
#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,
__u32 len, __u8 proto,
__wsum sum)
{
__asm__ __volatile__ (

5
arch/score/include/asm/checksum.h
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@ -179,9 +179,8 @@ static inline unsigned short ip_compute_csum(const void *buff, int len)
#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)
const struct in6_addr *daddr,
__u32 len, __u8 proto, __wsum sum)
{
__asm__ __volatile__(
".set\tvolatile\t\t\t# csum_ipv6_magic\n\t"

3
arch/sh/include/asm/checksum_32.h
View File

@ -159,8 +159,7 @@ static inline __sum16 ip_compute_csum(const void *buff, int len)
#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)
__u32 len, __u8 proto, __wsum sum)
{
unsigned int __dummy;
__asm__("clrt\n\t"

3
arch/sparc/include/asm/checksum_32.h
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@ -199,8 +199,7 @@ static inline __sum16 csum_tcpudp_magic(__be32 saddr, __be32 daddr,
static inline __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
const struct in6_addr *daddr,
__u32 len, unsigned short proto,
__wsum sum)
__u32 len, __u8 proto, __wsum sum)
{
__asm__ __volatile__ (
"addcc %3, %4, %%g4\n\t"

3
arch/sparc/include/asm/checksum_64.h
View File

@ -125,8 +125,7 @@ static inline __sum16 csum_tcpudp_magic(__be32 saddr, __be32 daddr,
static inline __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
const struct in6_addr *daddr,
__u32 len, unsigned short proto,
__wsum sum)
__u32 len, __u8 proto, __wsum sum)
{
__asm__ __volatile__ (
" addcc %3, %4, %%g7\n"

3
arch/x86/include/asm/checksum_32.h
View File

@ -149,8 +149,7 @@ static inline __sum16 ip_compute_csum(const void *buff, int len)
#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)
__u32 len, __u8 proto, __wsum sum)
{
asm("addl 0(%1), %0 ;\n"
"adcl 4(%1), %0 ;\n"

2
arch/x86/include/asm/checksum_64.h
View File

@ -177,7 +177,7 @@ struct in6_addr;
#define _HAVE_ARCH_IPV6_CSUM 1
extern __sum16
csum_ipv6_magic(const struct in6_addr *saddr, const struct in6_addr *daddr,
__u32 len, unsigned short proto, __wsum sum);
__u32 len, __u8 proto, __wsum sum);
static inline unsigned add32_with_carry(unsigned a, unsigned b)
{

2
arch/x86/lib/csum-wrappers_64.c
View File

@ -135,7 +135,7 @@ EXPORT_SYMBOL(csum_partial_copy_nocheck);
__sum16 csum_ipv6_magic(const struct in6_addr *saddr,
const struct in6_addr *daddr,
__u32 len, unsigned short proto, __wsum sum)
__u32 len, __u8 proto, __wsum sum)
{
__u64 rest, sum64;

2
arch/x86/um/asm/checksum_32.h
View File

@ -13,7 +13,7 @@ static inline __sum16 ip_compute_csum(const void *buff, int len)
#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,
__u32 len, __u8 proto,
__wsum sum)
{
__asm__(

2
arch/xtensa/include/asm/checksum.h
View File

@ -175,7 +175,7 @@ static __inline__ __sum16 ip_compute_csum(const void *buff, int len)
#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,
__u32 len, __u8 proto,
__wsum sum)
{
unsigned int __dummy;

3
include/net/ip6_checksum.h
View File

@ -37,8 +37,7 @@
#ifndef _HAVE_ARCH_IPV6_CSUM
__sum16 csum_ipv6_magic(const struct in6_addr *saddr,
const struct in6_addr *daddr,
__u32 len, unsigned short proto,
__wsum csum);
__u32 len, __u8 proto, __wsum csum);
#endif
static inline __wsum ip6_compute_pseudo(struct sk_buff *skb, int proto)

3
net/ipv6/ip6_checksum.c
View File

@ -6,8 +6,7 @@
#ifndef _HAVE_ARCH_IPV6_CSUM
__sum16 csum_ipv6_magic(const struct in6_addr *saddr,
const struct in6_addr *daddr,
__u32 len, unsigned short proto,
__wsum csum)
__u32 len, __u8 proto, __wsum csum)
{
int carry;