Re: [PATCH] netfilter: use per-cpu recursive lock (v11)

David Miller
2009-04-21T08:49:46Z

From: Lai Jiangshan <laijs@cn.fujitsu.com>
Date: Tue, 21 Apr 2009 16:42:40 +0800

> softirq is always not nesting. Why we need recursive lock?

Netfilter itself, is nesting.

When using bridging netfilter, iptables can be entered twice
in the same call chain.