linux-kernel - Re: [PATCH] netfilter: xt_NFLOG: allow 128 character log prefixes

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Message-ID: <20210727195459.GA15181@salvia>
Date:   Tue, 27 Jul 2021 21:54:59 +0200
From:   Pablo Neira Ayuso <pablo@...filter.org>
To:     Kyle Bowman <kbowman@...udflare.com>
Cc:     kernel-team@...udflare.com, Alex Forster <aforster@...udflare.com>,
        Jozsef Kadlecsik <kadlec@...filter.org>,
        Florian Westphal <fw@...len.de>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        netfilter-devel@...r.kernel.org, coreteam@...filter.org,
        linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: [PATCH] netfilter: xt_NFLOG: allow 128 character log prefixes

Hi,

On Tue, Jul 27, 2021 at 02:00:00PM -0500, Kyle Bowman wrote:
> From: Alex Forster <aforster@...udflare.com>
> 
> nftables defines NF_LOG_PREFIXLEN as 128 characters, while iptables
> limits the NFLOG prefix to 64 characters. In order to eventually make
> the two consistent [...]

Why do you need to make the two consistent? iptables NFLOG prefix
length is a subset of nftables log action, this is sufficient for the
iptables-nft layer. I might be missing the use-case on your side,
could you please elaborate?