diff mbox series

[nf-next] netfilter: slightly optimize nf_inet_addr_mask

Message ID 1556435539-7346-1-git-send-email-lirongqing@baidu.com
State Accepted
Delegated to: Pablo Neira
Headers show
Series [nf-next] netfilter: slightly optimize nf_inet_addr_mask | expand

Commit Message

Li RongQing April 28, 2019, 7:12 a.m. UTC 
using 64bit computation to slightly optimize nf_inet_addr_mask

Signed-off-by: Li RongQing <lirongqing@baidu.com>
---
 include/linux/netfilter.h | 9 +++++++++
 1 file changed, 9 insertions(+)

Comments

Pablo Neira Ayuso May 5, 2019, 11:25 p.m. UTC | #1 
On Sun, Apr 28, 2019 at 03:12:19PM +0800, Li RongQing wrote:
> using 64bit computation to slightly optimize nf_inet_addr_mask

Applied, thanks.
diff mbox series

Patch

diff --git a/include/linux/netfilter.h b/include/linux/netfilter.h
index a7252f3baeb0..996bc247ef6e 100644
--- a/include/linux/netfilter.h
+++ b/include/linux/netfilter.h
@@ -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);