Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 522e4077 authored by Li RongQing's avatar Li RongQing Committed by Pablo Neira Ayuso
Browse files

netfilter: slightly optimize nf_inet_addr_mask 



using 64bit computation to slightly optimize nf_inet_addr_mask

Signed-off-by: default avatarLi RongQing <lirongqing@baidu.com>
Signed-off-by: default avatarPablo Neira Ayuso <pablo@netfilter.org>
parent eabb4782

include/linux/netfilter.h

+9 −0
Original line number Diff line number Diff line
@@ -41,10 +41,19 @@ static inline void nf_inet_addr_mask(const union nf_inet_addr *a1, 
				     union nf_inet_addr *result,

				     const union nf_inet_addr *mask)

{

#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64

	const unsigned long *ua = (const unsigned long *)a1;

	unsigned long *ur = (unsigned long *)result;

	const unsigned long *um = (const unsigned long *)mask;



	ur[0] = ua[0] & um[0];

	ur[1] = ua[1] & um[1];

#else

	result->all[0] = a1->all[0] & mask->all[0];

	result->all[1] = a1->all[1] & mask->all[1];

	result->all[2] = a1->all[2] & mask->all[2];

	result->all[3] = a1->all[3] & mask->all[3];

#endif

}



int netfilter_init(void);