netdev - Re: [ANNOUNCE]: First release of nftables

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Date:	Wed, 18 Mar 2009 09:13:55 +0100 (CET)
From:	Jan Engelhardt <jengelh@...ozas.de>
To:	Patrick McHardy <kaber@...sh.net>
cc:	Netfilter Development Mailinglist 
	<netfilter-devel@...r.kernel.org>,
	Linux Netdev List <netdev@...r.kernel.org>, tgraf@...g.ch
Subject: Re: [ANNOUNCE]: First release of nftables

On Wednesday 2009-03-18 05:29, Patrick McHardy wrote:
>
> - logging:  logging using the nf_log mechsism using the primary backend.
>
>  Usage: "log [ prefix "prefix" ] [ group NUM ] [ snaplen NUM ]
>              [ queue-threshold NUM ]

Hm, how does one do traditional logging to syslog? Some of us just do
logging for debugging purposes and would not otherwise need the full-blown
nf_log solution - let alone there be enough space on some constrained
hardware for a thorough logger (say, WRT54).

> - limit: might be broken currently
>
>  Usage: "limit rate RATE/time-unit"

Does it use the old limit code (which has numerous accuracy problems
it seems), or will it magically make use of the rate estimator?

> The source code is available in three git trees:
>
> git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nft-2.6.git
> git://git.netfilter.org/libnl-nft.git

The libnl repositories (both original and yours) is missing tags.
(Cc'ing Thomas).
The unannotated tags can be got from git://dev.medozas.de/libnl .

This makes it easier to get version numbers instead of
"cannot describe $sha1".

> git://git.netfilter.org/nftables.git

Missing a tag too, I think you (Patrick) can add it still :)

> The kernel tree will eventually also move to netfilter.org, currently
> the git daemon is unable to handle it because of memory shortage.
>
> Ths source code is considered alpha quality and is not meant for users
> at this time, it will spew quite a lot of debugging messages and
> definitely has bugs. Nevertheless, all of the basic features and most
> of the rest should work fine, the last crash has been several months
> ago. The two most noticable things that currently don't work is
> numerical argument parsing for arguments that have more specific types
> (f.i. port numbers), as well as reconstruction of the internal
> representation of sets and dictionaries using ranges. Both will be
> fixed shortly.

How about storing the actual text the user inputed in something like
an -m comment, as an aid to the user for finding his rules again
after they have been optimized internally?

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