Re: [tsvwg] UDP options and header-data split (zero copy)

Joe Touch <touch@strayalpha.com> Sat, 31 July 2021 19:42 UTC

Return-Path: <touch@strayalpha.com>
X-Original-To: tsvwg@ietfa.amsl.com
Delivered-To: tsvwg@ietfa.amsl.com
Received: from localhost (localhost [127.0.0.1]) by ietfa.amsl.com (Postfix) with ESMTP id D52ED3A1785 for <tsvwg@ietfa.amsl.com>; Sat, 31 Jul 2021 12:42:22 -0700 (PDT)
X-Virus-Scanned: amavisd-new at amsl.com
X-Spam-Flag: NO
X-Spam-Score: -1.319
X-Spam-Level:
X-Spam-Status: No, score=-1.319 tagged_above=-999 required=5 tests=[BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, SPF_HELO_NONE=0.001, SPF_NEUTRAL=0.779, URIBL_BLOCKED=0.001] autolearn=no autolearn_force=no
Authentication-Results: ietfa.amsl.com (amavisd-new); dkim=pass (2048-bit key) header.d=strayalpha.com
Received: from mail.ietf.org ([4.31.198.44]) by localhost (ietfa.amsl.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id IxpOXhFgpPdu for <tsvwg@ietfa.amsl.com>; Sat, 31 Jul 2021 12:42:18 -0700 (PDT)
Received: from server217-4.web-hosting.com (server217-4.web-hosting.com [198.54.116.98]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ietfa.amsl.com (Postfix) with ESMTPS id 3E0CB3A1783 for <tsvwg@ietf.org>; Sat, 31 Jul 2021 12:42:18 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=strayalpha.com; s=default; h=To:References:Message-Id:Cc:Date:In-Reply-To: From:Subject:Mime-Version:Content-Transfer-Encoding:Content-Type:Sender: Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender :Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=oa+A4sq+HxjFfz6cHU12O1w4ZSjdw5ljQpY9XX0QyP4=; b=L5rRfKnauXPbHQXgqUkLCMOlLy qmpfsXpJFRaSq/okAxFbdVrRQGJIl9K57HLOZumJbu98ZDXC3yAMCcGkuuByMv0KbT11FcrfV2+Mc 1SOrDlpDOzkFRfRBw0UBUmXvMEFZbCbi8naaWKjKt1XDzEju84RKVSVKCBkf0iyx3uGecVs6701CY qoaN1RXV1TpToe/HlU+0N1eui2pboQ+w+nv15fls5u+XONfCFJ29UF+w4C4AoavFdgC0Q7k2wcOwa OtIkrDvD4Vrk+Vp06iJdcjaDYwo9E6ulLN8ca8uw46VpxCp4bdCsLTKmqsXW5/NIfv8vkV1ofSdvt Qt5N8Ukg==;
Received: from cpe-172-114-237-88.socal.res.rr.com ([172.114.237.88]:49765 helo=smtpclient.apple) by server217.web-hosting.com with esmtpsa (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from <touch@strayalpha.com>) id 1m9us9-0033Re-Hj; Sat, 31 Jul 2021 15:42:17 -0400
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: quoted-printable
Mime-Version: 1.0 (1.0)
From: Joe Touch <touch@strayalpha.com>
In-Reply-To: <CALx6S37zVVXnCH+Dv7_QXgwOoqcL4h0SThh+LnmAWn-5enprZQ@mail.gmail.com>
Date: Sat, 31 Jul 2021 12:42:13 -0700
Cc: tsvwg <tsvwg@ietf.org>
Message-Id: <FA155FD9-2319-405C-B082-C023DEC2BF28@strayalpha.com>
References: <CALx6S37zVVXnCH+Dv7_QXgwOoqcL4h0SThh+LnmAWn-5enprZQ@mail.gmail.com>
To: Tom Herbert <tom@herbertland.com>
X-Mailer: iPad Mail (18G82)
X-OutGoing-Spam-Status: No, score=-1.0
X-AntiAbuse: This header was added to track abuse, please include it with any abuse report
X-AntiAbuse: Primary Hostname - server217.web-hosting.com
X-AntiAbuse: Original Domain - ietf.org
X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12]
X-AntiAbuse: Sender Address Domain - strayalpha.com
X-Get-Message-Sender-Via: server217.web-hosting.com: authenticated_id: touch@strayalpha.com
X-Authenticated-Sender: server217.web-hosting.com: touch@strayalpha.com
X-Source:
X-Source-Args:
X-Source-Dir:
X-From-Rewrite: unmodified, already matched
Archived-At: <https://mailarchive.ietf.org/arch/msg/tsvwg/LW9jWNrNUFgJjMHxiNyMdVgMkqg>
Subject: Re: [tsvwg] UDP options and header-data split (zero copy)
X-BeenThere: tsvwg@ietf.org
X-Mailman-Version: 2.1.29
Precedence: list
List-Id: Transport Area Working Group <tsvwg.ietf.org>
List-Unsubscribe: <https://www.ietf.org/mailman/options/tsvwg>, <mailto:tsvwg-request@ietf.org?subject=unsubscribe>
List-Archive: <https://mailarchive.ietf.org/arch/browse/tsvwg/>
List-Post: <mailto:tsvwg@ietf.org>
List-Help: <mailto:tsvwg-request@ietf.org?subject=help>
List-Subscribe: <https://www.ietf.org/mailman/listinfo/tsvwg>, <mailto:tsvwg-request@ietf.org?subject=subscribe>
X-List-Received-Date: Sat, 31 Jul 2021 19:42:23 -0000


> On Jul 31, 2021, at 11:58 AM, Tom Herbert <tom@herbertland.com> wrote:
> 
>> There’s no way that endpoint can ensure it never sees non-fragment UDP options, so it cannot support UDP options.
>> 
> For a tunnel, use of UDP options would just be another configuration
> parameter at the end points; we don't need negotiation to send
> non-legacy packets. If there's a mismatch in endpoint configuration
> then the operator simply detects it and fixes it like any other tunnel
> configuration problem.

Ok, the simply don’t set any per packet options and I’ll be fine.

Joe