diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/addrconf.h | 3 | ||||
| -rw-r--r-- | include/net/ipv6.h | 13 |
2 files changed, 15 insertions, 1 deletions
diff --git a/include/net/addrconf.h b/include/net/addrconf.h index f2b801c4b555..089a09d001d1 100644 --- a/include/net/addrconf.h +++ b/include/net/addrconf.h @@ -46,7 +46,8 @@ struct prefix_info { #include <net/if_inet6.h> #include <net/ipv6.h> -#define IN6_ADDR_HSIZE 16 +#define IN6_ADDR_HSIZE_SHIFT 4 +#define IN6_ADDR_HSIZE (1 << IN6_ADDR_HSIZE_SHIFT) extern int addrconf_init(void); extern void addrconf_cleanup(void); diff --git a/include/net/ipv6.h b/include/net/ipv6.h index f695f39e8926..01c34b363a34 100644 --- a/include/net/ipv6.h +++ b/include/net/ipv6.h @@ -419,6 +419,19 @@ static inline bool ipv6_addr_any(const struct in6_addr *a) #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) { return (a->s6_addr32[0] | a->s6_addr32[1] | |