netfilter: slightly optimize nf_inet_addr_mask

using 64bit computation to slightly optimize nf_inet_addr_mask

Li RongQing committed 7 years ago

Commit 522e4071 parent eabb4781 file · +9 −0Browse files

Showing the changes to include/linux (1 of 1 file). Show all

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@@ -41,10 +41,19 @@ static inline void nf_inet_addr_mask(const union nf_inet_addr *a1, · 40 unmodified lines
41	41	union nf_inet_addr *result,
42	42	const union nf_inet_addr *mask)
43	43	{
	44	+#if defined(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) && BITS_PER_LONG == 64
	45	+ const unsigned long ua = (const unsigned long )a1;
	46	+ unsigned long ur = (unsigned long )result;
	47	+ const unsigned long um = (const unsigned long )mask;
	48	+
	49	+ ur[0] = ua[0] & um[0];
	50	+ ur[1] = ua[1] & um[1];
	51	+#else
44	52	result->all[0] = a1->all[0] & mask->all[0];
45	53	result->all[1] = a1->all[1] & mask->all[1];
46	54	result->all[2] = a1->all[2] & mask->all[2];
47	55	result->all[3] = a1->all[3] & mask->all[3];
	56	+#endif
48	57	}
49	58
50	59	int netfilter_init(void);

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