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From: "W. Michael Petullo" <mike@flyn.org>
To: netfilter@vger.kernel.org
Subject: Obtaining process which generated packet
Date: Fri, 2 Oct 2015 13:38:37 -0400	[thread overview]
Message-ID: <20151002173837.GA5132@imp.flyn.org> (raw)

I am interested in identifying the process (if any) responsible for
creating a packet from within a netfilter module. Specifically, I would
like to (from within the kernel) inspect the appropriate process's task
structure and make a decision based on what I find. How might I do this?

Another user asked a similar question some time ago:

	http://lists.netfilter.org/pipermail/netfilter/2005-December/064225.html

However, I did not find a conclusive answer.

One of the responders stated this of the suggested use of
sk_buff->sock->socket->file->fown_struct->pid:

	"...and if using SMP you can't use it at all in netfilter context."

I was unable to follow why this would be the case. Would someone
be willing to elaborate on this too?

Thank you,

-- 
Mike

:wq

                 reply	other threads:[~2015-10-02 17:38 UTC|newest]

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