diff options
Diffstat (limited to 'include/net/ipv6.h')
| -rw-r--r-- | include/net/ipv6.h | 39 |
1 files changed, 38 insertions, 1 deletions
diff --git a/include/net/ipv6.h b/include/net/ipv6.h index aecf88436abf..01c34b363a34 100644 --- a/include/net/ipv6.h +++ b/include/net/ipv6.h @@ -251,6 +251,8 @@ static inline void fl6_sock_release(struct ip6_flowlabel *fl) atomic_dec(&fl->users); } +extern void icmpv6_notify(struct sk_buff *skb, u8 type, u8 code, __be32 info); + extern int ip6_ra_control(struct sock *sk, int sel); extern int ipv6_parse_hopopts(struct sk_buff *skb); @@ -298,14 +300,23 @@ static inline int ipv6_addr_cmp(const struct in6_addr *a1, const struct in6_addr return memcmp(a1, a2, sizeof(struct in6_addr)); } -static inline int +static inline bool ipv6_masked_addr_cmp(const struct in6_addr *a1, const struct in6_addr *m, const struct in6_addr *a2) { +#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64 + const unsigned long *ul1 = (const unsigned long *)a1; + const unsigned long *ulm = (const unsigned long *)m; + const unsigned long *ul2 = (const unsigned long *)a2; + + return !!(((ul1[0] ^ ul2[0]) & ulm[0]) | + ((ul1[1] ^ ul2[1]) & ulm[1])); +#else return !!(((a1->s6_addr32[0] ^ a2->s6_addr32[0]) & m->s6_addr32[0]) | ((a1->s6_addr32[1] ^ a2->s6_addr32[1]) & m->s6_addr32[1]) | ((a1->s6_addr32[2] ^ a2->s6_addr32[2]) & m->s6_addr32[2]) | ((a1->s6_addr32[3] ^ a2->s6_addr32[3]) & m->s6_addr32[3])); +#endif } static inline void ipv6_addr_prefix(struct in6_addr *pfx, @@ -335,10 +346,17 @@ static inline void ipv6_addr_set(struct in6_addr *addr, static inline bool ipv6_addr_equal(const struct in6_addr *a1, const struct in6_addr *a2) { +#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64 + const unsigned long *ul1 = (const unsigned long *)a1; + const unsigned long *ul2 = (const unsigned long *)a2; + + return ((ul1[0] ^ ul2[0]) | (ul1[1] ^ ul2[1])) == 0UL; +#else return ((a1->s6_addr32[0] ^ a2->s6_addr32[0]) | (a1->s6_addr32[1] ^ a2->s6_addr32[1]) | (a1->s6_addr32[2] ^ a2->s6_addr32[2]) | (a1->s6_addr32[3] ^ a2->s6_addr32[3])) == 0; +#endif } static inline bool __ipv6_prefix_equal(const __be32 *a1, const __be32 *a2, @@ -391,8 +409,27 @@ bool ip6_frag_match(struct inet_frag_queue *q, void *a); static inline bool ipv6_addr_any(const struct in6_addr *a) { +#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64 + const unsigned long *ul = (const unsigned long *)a; + + return (ul[0] | ul[1]) == 0UL; +#else return (a->s6_addr32[0] | a->s6_addr32[1] | a->s6_addr32[2] | a->s6_addr32[3]) == 0; +#endif +} + +static inline u32 ipv6_addr_hash(const struct in6_addr *a) +{ +#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64 + const unsigned long *ul = (const unsigned long *)a; + unsigned long x = ul[0] ^ ul[1]; + + return (u32)(x ^ (x >> 32)); +#else + return (__force u32)(a->s6_addr32[0] ^ a->s6_addr32[1] ^ + a->s6_addr32[2] ^ a->s6_addr32[3]); +#endif } static inline bool ipv6_addr_loopback(const struct in6_addr *a) |
