From: Jiri Pirko <jpirko@redhat.com>
To: kaber@trash.net
Cc: netfilter@vger.kernel.org, bart.de.schuymer@pandora.be,
davem@davemloft.net, shemminger@vyatta.com
Subject: [Question] netfilter, xt_target->target and xt_target->checkentry locks
Date: Wed, 9 Jun 2010 14:21:15 +0200 [thread overview]
Message-ID: <20100609122114.GB2825@psychotron.lab.eng.brq.redhat.com> (raw)
Hi Patrick.
Once module registers it's struct xt_target by xt_register_target and ->target
and ->checkentry funtions are called later, is there any lock guaranteed to be
held?
From what I see for ->target it looks like rcu_read_lock is held, but I'm not
sure for all paths. There would be nice to put a comment into struct xt_target
definition regarding locks.
Asking because I found several places where dev->br_port is referenced directly
(without rcu_dereference).
Thanks a lot.
Jirka
next reply other threads:[~2010-06-09 12:21 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-09 12:21 Jiri Pirko [this message]
2010-06-09 12:37 ` [Question] netfilter, xt_target->target and xt_target->checkentry locks Jan Engelhardt
2010-06-09 13:00 ` Jiri Pirko
2010-06-09 13:03 ` Patrick McHardy
2010-06-09 13:13 ` Jiri Pirko
2010-06-09 13:26 ` Patrick McHardy
2010-06-09 14:06 ` Jiri Pirko
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