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Commit d1641565 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_ll_all_{nodes,routers}(). 



Signed-off-by: default avatarYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 9d100774

include/net/addrconf.h

+10 −0
Original line number Diff line number Diff line
@@ -288,16 +288,26 @@ static inline bool ipv6_addr_is_multicast(const struct in6_addr *addr) 


static inline bool ipv6_addr_is_ll_all_nodes(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(1))) == 0UL;

#else

	return ((addr->s6_addr32[0] ^ htonl(0xff020000)) |

		addr->s6_addr32[1] | addr->s6_addr32[2] |

		(addr->s6_addr32[3] ^ htonl(0x00000001))) == 0;

#endif

}



static inline bool ipv6_addr_is_ll_all_routers(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(2))) == 0UL;

#else

	return ((addr->s6_addr32[0] ^ htonl(0xff020000)) |

		addr->s6_addr32[1] | addr->s6_addr32[2] |

		(addr->s6_addr32[3] ^ htonl(0x00000002))) == 0;

#endif

}



static inline bool ipv6_addr_is_isatap(const struct in6_addr *addr)