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Commit 9d100774 authored by YOSHIFUJI Hideaki / 吉藤英明's avatar YOSHIFUJI Hideaki / 吉藤英明 Committed by David S. Miller
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ipv6: Optimize ipv6_addr_is_solict_mult(). 



Signed-off-by: default avatarYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent ca97a644

include/net/addrconf.h

+11 −4
Original line number Diff line number Diff line
@@ -307,10 +307,17 @@ static inline bool ipv6_addr_is_isatap(const struct in6_addr *addr) 


static inline bool ipv6_addr_is_solict_mult(const struct in6_addr *addr)

{

	return (addr->s6_addr32[0] == htonl(0xff020000) &&

		addr->s6_addr32[1] == htonl(0x00000000) &&

		addr->s6_addr32[2] == htonl(0x00000001) &&

		addr->s6_addr[12] == 0xff);

#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

}



#ifdef CONFIG_PROC_FS