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[IPV6]: __ipv6_addr_diff() annotations and cleanup.

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Al Viro
2006-11-14 20:56:33 -08:00
committed by David S. Miller
parent e69a4adc66
commit ef296f56f8
1 changed files with 4 additions and 11 deletions
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15
include/net/ipv6.h
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@@ -394,22 +394,15 @@ static inline int ipv6_addr_any(const struct in6_addr *a)
*/ */
static inline int __ipv6_addr_diff(const void *token1, const void *token2, int addrlen) static inline int __ipv6_addr_diff(const void *token1, const void *token2, int addrlen)
{ {
const __u32 *a1 = token1, *a2 = token2; const __be32 *a1 = token1, *a2 = token2;
int i; int i;
addrlen >>= 2; addrlen >>= 2;
for (i = 0; i < addrlen; i++) { for (i = 0; i < addrlen; i++) {
__u32 xb = a1[i] ^ a2[i]; __be32 xb = a1[i] ^ a2[i];
if (xb) { if (xb)
int j = 31; return i * 32 + 32 - fls(ntohl(xb));
xb = ntohl(xb);
while ((xb & (1 << j)) == 0)
j--;
return (i * 32 + 31 - j);
}
} }
/* /*