From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-lj1-x241.google.com (mail-lj1-x241.google.com [IPv6:2a00:1450:4864:20::241]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id 1ADD83B29E for ; Fri, 26 Jun 2020 12:36:07 -0400 (EDT) Received: by mail-lj1-x241.google.com with SMTP id s9so10955953ljm.11 for ; Fri, 26 Jun 2020 09:36:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=eRYFGRArONWIgN9s4+mE71PGB0SsYn0z4yBVMo7WaWk=; b=fq8RTB6qu0u+jT78Z6xHjpMc4dmCCMHymat4fMFbJ9Lw19alDgwrKDre7dFAdUutpQ LfrBHbu7d0PX9wdl7sRsJT0kRoh4VZz+JZAl0JKALxzafmQoCAMfwqJNRlYrn2siZvFx bhYUPGPJmO5Ovlf3e1YHMzMalv0MQOHFLUveGdN7O6pqQLeQY4kRqCaI62Ur7sCsFYvG +Yj7mznXUnhCWkizf/mC4cDgtmx9gla9yy+7w1GJE1YsqcPlKCLHbzWAP97leQWakOV9 itvd5chaejkRtqTwDvzmrynvPJszXqtzphWaiZuN9ovjd5aLe9d7wfUXM6SvamyLjBuH CEAw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=eRYFGRArONWIgN9s4+mE71PGB0SsYn0z4yBVMo7WaWk=; b=tUUILTsJV8/RclPK3DwrCEBjyTxiwxMZG3TLo7M3k47OP4Ajn/14FrZdZFzB5gxXPD Q3zEfPTg7TzRYg7BGnyoFrwB2R/XiJoMpFgEoYERsE8NhWeeFmlUMQ1cesDjPXpgazpn XEfxHYHuCdpQ3EG0BkxWSypw1TQkkUyrBlOoJCEgvquxhBJ6xxznFIymPzuT6ypEEagw S16aXO2KjH4zpBY58vO+BOeKu/XQxE4UCstEVzgIZXXCUd3uqjbP0rVgzKReUp5p+/SK KrrmcHXirb4+1br68b0WyNCXjYoaUFUJuBrioUwULcsGYZfUqm+IMspRTCok5JBL0/sG ZEJA== X-Gm-Message-State: AOAM531DYgY6TRkI7+IWyTVQfBcAeCCe5KsY5y7nOXF1Fxq8pGtjREgl wpWBIdY23V59vXcQxbzk7gE= X-Google-Smtp-Source: ABdhPJx5RncUDm55ZcR/EXZdGj9koAhgl8X3fNLKO3388vYKSZU6DWK1cWesqIJX+FcGDE/ORdO7Xw== X-Received: by 2002:a2e:85d2:: with SMTP id h18mr1981278ljj.367.1593189366034; Fri, 26 Jun 2020 09:36:06 -0700 (PDT) Received: from jonathartonsmbp.lan (83-245-237-85-nat-p.elisa-mobile.fi. [83.245.237.85]) by smtp.gmail.com with ESMTPSA id i22sm1298957ljg.31.2020.06.26.09.36.04 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Fri, 26 Jun 2020 09:36:05 -0700 (PDT) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 11.5 \(3445.9.5\)) From: Jonathan Morton In-Reply-To: Date: Fri, 26 Jun 2020 19:36:04 +0300 Cc: Cake List , dcaratti@redhat.com Content-Transfer-Encoding: quoted-printable Message-Id: <8BAD586F-43FB-4ED1-865E-45AFB9AE9D95@gmail.com> References: <159308610282.190211.9431406149182757758.stgit@toke.dk> <159308610390.190211.17831843954243284203.stgit@toke.dk> <20200625.122945.321093402617646704.davem@davemloft.net> <87k0zuj50u.fsf@toke.dk> <240fc14da96a6212a98dd9ef43b4777a9f28f250.camel@redhat.com> <78C16717-5EB2-49BF-A377-21A9B22662E1@gmail.com> To: Sebastian Moeller X-Mailer: Apple Mail (2.3445.9.5) Subject: Re: [Cake] [PATCH net-next 1/5] sch_cake: fix IP protocol handling in the presence of VLAN tags X-BeenThere: cake@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: Cake - FQ_codel the next generation List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 26 Jun 2020 16:36:07 -0000 > On 26 Jun, 2020, at 5:59 pm, Sebastian Moeller = wrote: >=20 > thinking this over, I wonder whether a hypothetical carrier grade = cake, might not actually grow a classify-by-vlan-priority keyword to = allow switching over to using VLAN priority tags instead of dscps? That = would avoid tempting carriers to re-map deeep-encapsulated dscps if they = can just ignore them for good. And it scratches my pet itch, that 3 bits = of classification should be enough for >80 % of the cases ;) >=20 > What do you think? If carriers could use Ethernet VLANs for internal purposes instead of = DSCPs, I would count that as progress towards allowing DSCPs to carry = end-to-end information. And if there's a desire for a software qdisc = which fits that paradigm, then we can do a requirements analysis which = might well lead to something useful being developed. But that isn't going to be Cake. It'll be a different qdisc which might = share some features and technology with Cake, but definitely arranged in = a different order and with a different focus. - Jonathan Morton=