diff options
| -rw-r--r-- | include/net/ipv6.h | 26 |
1 files changed, 22 insertions, 4 deletions
diff --git a/include/net/ipv6.h b/include/net/ipv6.h index 77cef332157..fb7f7c645e1 100644 --- a/include/net/ipv6.h +++ b/include/net/ipv6.h @@ -355,14 +355,32 @@ static inline void ipv6_addr_prefix(struct in6_addr *pfx, pfx->s6_addr[o] = addr->s6_addr[o] & (0xff00 >> b); } +static inline void __ipv6_addr_set_half(__be32 *addr, + __be32 wh, __be32 wl) +{ +#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64 +#if defined(__BIG_ENDIAN) + if (__builtin_constant_p(wh) && __builtin_constant_p(wl)) { + *(__force u64 *)addr = ((__force u64)(wh) << 32 | (__force u64)(wl)); + return; + } +#elif defined(__LITTLE_ENDIAN) + if (__builtin_constant_p(wl) && __builtin_constant_p(wh)) { + *(__force u64 *)addr = ((__force u64)(wl) << 32 | (__force u64)(wh)); + return; + } +#endif +#endif + addr[0] = wh; + addr[1] = wl; +} + static inline void ipv6_addr_set(struct in6_addr *addr, __be32 w1, __be32 w2, __be32 w3, __be32 w4) { - addr->s6_addr32[0] = w1; - addr->s6_addr32[1] = w2; - addr->s6_addr32[2] = w3; - addr->s6_addr32[3] = w4; + __ipv6_addr_set_half(&addr->s6_addr32[0], w1, w2); + __ipv6_addr_set_half(&addr->s6_addr32[2], w3, w4); } static inline bool ipv6_addr_equal(const struct in6_addr *a1, |