ipv6: Pass proto to csum_ipv6_magic as __u8 instead of unsigned short
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>
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01cfbad79a
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1e94082963
18 changed files with 21 additions and 29 deletions
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@ -67,6 +67,5 @@ static inline __sum16 csum_fold(__wsum csum)
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#define _HAVE_ARCH_IPV6_CSUM
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extern __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
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const struct in6_addr *daddr,
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__u32 len, unsigned short proto,
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__wsum sum);
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__u32 len, __u8 proto, __wsum sum);
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#endif
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@ -144,8 +144,8 @@ __csum_ipv6_magic(const struct in6_addr *saddr, const struct in6_addr *daddr, __
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__be32 proto, __wsum sum);
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static inline __sum16
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csum_ipv6_magic(const struct in6_addr *saddr, const struct in6_addr *daddr, __u32 len,
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unsigned short proto, __wsum sum)
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csum_ipv6_magic(const struct in6_addr *saddr, const struct in6_addr *daddr,
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__u32 len, __u8 proto, __wsum sum)
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{
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return csum_fold(__csum_ipv6_magic(saddr, daddr, htonl(len),
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htonl(proto), sum));
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@ -135,7 +135,7 @@ extern __sum16 ip_compute_csum(const void *buff, int len);
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#define _HAVE_ARCH_IPV6_CSUM
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static inline __sum16
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csum_ipv6_magic(const struct in6_addr *saddr, const struct in6_addr *daddr,
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__u32 len, unsigned short proto, __wsum sum)
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__u32 len, __u8 proto, __wsum sum)
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{
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unsigned long tmp, tmp2;
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@ -69,7 +69,7 @@ static inline __sum16 csum_fold(__wsum csum)
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#define _HAVE_ARCH_IPV6_CSUM 1
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struct in6_addr;
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extern __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
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const struct in6_addr *daddr, __u32 len, unsigned short proto,
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__wsum csum);
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const struct in6_addr *daddr,
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__u32 len, __u8 proto, __wsum csum);
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#endif /* _ASM_IA64_CHECKSUM_H */
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@ -117,7 +117,7 @@ static inline __sum16 ip_compute_csum(const void *buff, int len)
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#define _HAVE_ARCH_IPV6_CSUM
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static __inline__ __sum16
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csum_ipv6_magic(const struct in6_addr *saddr, const struct in6_addr *daddr,
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__u32 len, unsigned short proto, __wsum sum)
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__u32 len, __u8 proto, __wsum sum)
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{
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register unsigned long tmp;
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__asm__("addl %2@,%0\n\t"
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@ -215,7 +215,7 @@ static inline __sum16 ip_compute_csum(const void *buff, int len)
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#define _HAVE_ARCH_IPV6_CSUM
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static __inline__ __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
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const struct in6_addr *daddr,
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__u32 len, unsigned short proto,
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__u32 len, __u8 proto,
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__wsum sum)
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{
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__wsum tmp;
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@ -122,7 +122,7 @@ static inline __sum16 ip_compute_csum(const void *buf, int len)
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#define _HAVE_ARCH_IPV6_CSUM
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static __inline__ __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
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const struct in6_addr *daddr,
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__u32 len, unsigned short proto,
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__u32 len, __u8 proto,
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__wsum sum)
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{
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__asm__ __volatile__ (
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@ -179,9 +179,8 @@ static inline unsigned short ip_compute_csum(const void *buff, int len)
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#define _HAVE_ARCH_IPV6_CSUM
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static inline __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
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const struct in6_addr *daddr,
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__u32 len, unsigned short proto,
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__wsum sum)
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const struct in6_addr *daddr,
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__u32 len, __u8 proto, __wsum sum)
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{
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__asm__ __volatile__(
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".set\tvolatile\t\t\t# csum_ipv6_magic\n\t"
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@ -159,8 +159,7 @@ static inline __sum16 ip_compute_csum(const void *buff, int len)
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#define _HAVE_ARCH_IPV6_CSUM
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static inline __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
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const struct in6_addr *daddr,
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__u32 len, unsigned short proto,
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__wsum sum)
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__u32 len, __u8 proto, __wsum sum)
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{
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unsigned int __dummy;
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__asm__("clrt\n\t"
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@ -199,8 +199,7 @@ static inline __sum16 csum_tcpudp_magic(__be32 saddr, __be32 daddr,
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static inline __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
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const struct in6_addr *daddr,
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__u32 len, unsigned short proto,
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__wsum sum)
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__u32 len, __u8 proto, __wsum sum)
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{
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__asm__ __volatile__ (
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"addcc %3, %4, %%g4\n\t"
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@ -125,8 +125,7 @@ static inline __sum16 csum_tcpudp_magic(__be32 saddr, __be32 daddr,
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static inline __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
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const struct in6_addr *daddr,
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__u32 len, unsigned short proto,
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__wsum sum)
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__u32 len, __u8 proto, __wsum sum)
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{
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__asm__ __volatile__ (
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" addcc %3, %4, %%g7\n"
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@ -149,8 +149,7 @@ static inline __sum16 ip_compute_csum(const void *buff, int len)
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#define _HAVE_ARCH_IPV6_CSUM
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static inline __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
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const struct in6_addr *daddr,
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__u32 len, unsigned short proto,
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__wsum sum)
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__u32 len, __u8 proto, __wsum sum)
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{
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asm("addl 0(%1), %0 ;\n"
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"adcl 4(%1), %0 ;\n"
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@ -177,7 +177,7 @@ struct in6_addr;
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#define _HAVE_ARCH_IPV6_CSUM 1
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extern __sum16
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csum_ipv6_magic(const struct in6_addr *saddr, const struct in6_addr *daddr,
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__u32 len, unsigned short proto, __wsum sum);
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__u32 len, __u8 proto, __wsum sum);
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static inline unsigned add32_with_carry(unsigned a, unsigned b)
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{
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@ -135,7 +135,7 @@ EXPORT_SYMBOL(csum_partial_copy_nocheck);
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__sum16 csum_ipv6_magic(const struct in6_addr *saddr,
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const struct in6_addr *daddr,
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__u32 len, unsigned short proto, __wsum sum)
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__u32 len, __u8 proto, __wsum sum)
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{
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__u64 rest, sum64;
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@ -13,7 +13,7 @@ static inline __sum16 ip_compute_csum(const void *buff, int len)
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#define _HAVE_ARCH_IPV6_CSUM
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static __inline__ __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
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const struct in6_addr *daddr,
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__u32 len, unsigned short proto,
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__u32 len, __u8 proto,
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__wsum sum)
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{
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__asm__(
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@ -175,7 +175,7 @@ static __inline__ __sum16 ip_compute_csum(const void *buff, int len)
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#define _HAVE_ARCH_IPV6_CSUM
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static __inline__ __sum16 csum_ipv6_magic(const struct in6_addr *saddr,
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const struct in6_addr *daddr,
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__u32 len, unsigned short proto,
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__u32 len, __u8 proto,
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__wsum sum)
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{
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unsigned int __dummy;
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@ -37,8 +37,7 @@
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#ifndef _HAVE_ARCH_IPV6_CSUM
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__sum16 csum_ipv6_magic(const struct in6_addr *saddr,
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const struct in6_addr *daddr,
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__u32 len, unsigned short proto,
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__wsum csum);
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__u32 len, __u8 proto, __wsum csum);
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#endif
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static inline __wsum ip6_compute_pseudo(struct sk_buff *skb, int proto)
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@ -6,8 +6,7 @@
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#ifndef _HAVE_ARCH_IPV6_CSUM
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__sum16 csum_ipv6_magic(const struct in6_addr *saddr,
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const struct in6_addr *daddr,
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__u32 len, unsigned short proto,
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__wsum csum)
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__u32 len, __u8 proto, __wsum csum)
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{
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int carry;
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