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ipv6: 64bit version of ipv6_addr_set().

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Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
YOSHIFUJI Hideaki / 吉藤英明 2013-01-14 07:10:24 +00:00 committed by David S. Miller
parent a04d40b895
commit 5206c579da
1 changed files with 22 additions and 4 deletions
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26
include/net/ipv6.h
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@ -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,