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netfilter: nf_conntrack: ensure that CONNTRACK_LOCKS is power of 2
authorLi RongQing <lirongqing@baidu.com>
Tue, 26 Feb 2019 09:20:52 +0000 (17:20 +0800)
committerPablo Neira Ayuso <pablo@netfilter.org>
Fri, 1 Mar 2019 13:36:46 +0000 (14:36 +0100)
commit2e7b162c5e911050be84c86c6226a5e21bba5771
tree52d6651b215a8a12ccb3dda7d93c3f8c6a1e20fatree | snapshot
parenta9f5e78c403d2d62ade4f4c85040efc85f4049b8commit | diff
netfilter: nf_conntrack: ensure that CONNTRACK_LOCKS is power of 2

CONNTRACK_LOCKS is divisor when computer array index, if it is power of
2, compiler will optimize modulo operation as bitwise AND, or else
modulo will lower performance.

Suggested-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Li RongQing <lirongqing@baidu.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
net/netfilter/nf_conntrack_core.c diff | blob | history
https://github.com/torvalds/linux.git