blob: f1e8e62781c89ef7ca6f3e51b4ee95cf868d53e3 [file] [log] [blame]
#ifndef _BACKPORT_NET_ADDRCONF_H
#define _BACKPORT_NET_ADDRCONF_H 1
#include_next <net/addrconf.h>
#include <linux/version.h>
#if LINUX_VERSION_IS_LESS(3,9,0)
static inline bool ipv6_addr_is_solict_mult(const struct in6_addr *addr)
{
#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64
__u64 *p = (__u64 *)addr;
return ((p[0] ^ cpu_to_be64(0xff02000000000000UL)) |
((p[1] ^ cpu_to_be64(0x00000001ff000000UL)) &
cpu_to_be64(0xffffffffff000000UL))) == 0UL;
#else
return ((addr->s6_addr32[0] ^ htonl(0xff020000)) |
addr->s6_addr32[1] |
(addr->s6_addr32[2] ^ htonl(0x00000001)) |
(addr->s6_addr[12] ^ 0xff)) == 0;
#endif
}
#endif /* LINUX_VERSION_IS_LESS(3,9,0) */
#endif /* _BACKPORT_NET_ADDRCONF_H */