From: Pablo Neira Ayuso <pablo@netfilter.org>
To: Florian Westphal <fw@strlen.de>
Cc: netfilter-devel@vger.kernel.org
Subject: Re: [PATCH nf-next] netfilter: exthdr: add support for tcp option removal
Date: Thu, 23 Dec 2021 00:50:13 +0100 [thread overview]
Message-ID: <YcO5tQz5ImOxtZLx@salvia> (raw)
In-Reply-To: <20211220143247.554667-1-fw@strlen.de>
On Mon, Dec 20, 2021 at 03:32:47PM +0100, Florian Westphal wrote:
> This allows to replace a tcp option with nop padding to selectively disable
> a particular tcp option.
>
> Optstrip mode is chosen when userspace passes the exthdr expression with
> neither a source nor a destination register attribute.
>
> This is identical to xtables TCPOPTSTRIP extension.
Is it worth to retain the bitmap approach?
> Signed-off-by: Florian Westphal <fw@strlen.de>
> ---
> proposed userspace syntax is:
>
> nft add rule f in delete tcp option sack-perm
nft add rule f in tcp option reset sack-perm,...
next prev parent reply other threads:[~2021-12-22 23:50 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-20 14:32 [PATCH nf-next] netfilter: exthdr: add support for tcp option removal Florian Westphal
2021-12-22 23:50 ` Pablo Neira Ayuso [this message]
2021-12-24 16:07 ` Pablo Neira Ayuso
2021-12-27 14:11 ` Florian Westphal
2021-12-27 14:28 ` Pablo Neira Ayuso
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