From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Cade Robinson" <cade.robinson@gmail.com>
Subject: Default netfilter kernel buffer size?
Date: Thu, 12 Jun 2014 16:29:36 -0500
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To: netfilter@vger.kernel.org

I have been searching around and can't find it so maybe someone can tell me.

I am looking for the default size of the kernel queue netfilter uses and if
there is a /proc file to see what the current setting is?

 

The story is I have a program that marks packets coming into netfilter.

On slower devices while a blacklist loads I have run into ENOBUFS error from
recv.

I am thinking that if I use nfq_set_queue_maxlen to set this to a higher
number I won't get the ENOBUFS error but I can't find the default to know
what may be a larger number.

Also I can't find any /proc file to show me the current number.  Does one
exist and is it the same for 2.6.20+ kernels?

 

This is on a 3.14.6 kernel with netfiler 1.0.2 and nfnetlink 1.0.1