From: Florian Westphal <fw@strlen.de>
To: Oleg <lego12239@yandex.ru>
Cc: netfilter-devel@vger.kernel.org
Subject: Re: nfqueue buf size for recv()
Date: Wed, 19 Apr 2017 23:45:21 +0200 [thread overview]
Message-ID: <20170419214521.GD17294@breakpoint.cc> (raw)
In-Reply-To: <20170419165024.GA28485@legohost>
Oleg <lego12239@yandex.ru> wrote:
> Can anybody tell me how can i determine a right buf size for recv()
> in libnetfilter_queue program.
>
> http://www.netfilter.org/projects/libnetfilter_queue/doxygen/group__Queue.html#gae36aee5b74d0c88d2f8530e356f68b79
>
> tells nothing about this.
I'd suggest a 80k buffer to be on safe side.
You need to be able to hold the size of one packet, which could be up to
64k depending on options/mtu) plus all the extra netlink meta data.
next prev parent reply other threads:[~2017-04-19 21:46 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-19 16:50 nfqueue buf size for recv() Oleg
2017-04-19 21:45 ` Florian Westphal [this message]
2017-04-20 8:45 ` Oleg
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