From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-io1-xd2f.google.com (mail-io1-xd2f.google.com [IPv6:2607:f8b0:4864:20::d2f]) (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 AEF1C3CB38; Mon, 18 Oct 2021 22:45:57 -0400 (EDT) Received: by mail-io1-xd2f.google.com with SMTP id i189so18724557ioa.1; Mon, 18 Oct 2021 19:45:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc:content-transfer-encoding; bh=mlGKnyUp0HcbnMVcKx+WuYnN4ffAalvniGkYiejf4zE=; b=a+jeu/THOMryTLVU3grWD75lDTIoMHnFfsiJpGWYF9gMHDS+jokWZRkzMFwSTKrv1h zK4Vl86Ec81xGSkjjHhUpyOhAMMfD6mcT4rTDHpuHhRIuIwjIWNjcxgyr8mpjSmFZUki 9WwINPYCHxBELQWhEHOVCCZ6D6HzGVumgont3ggdOiPjm/5I4jYkLthkoClVNgXH1vxN f8ydlHh9NkGrfzNwWZ76youkVLnM0Sj1ziJfob3NVDbTAjfLFAXMcz/uw9cyBa2T7G5X slektHtSRroZxqKZ0emTNN+sGVWqemGTz/bgds6PA6esa02bxdOFNryoDXHvEbOWML67 +rqw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc:content-transfer-encoding; bh=mlGKnyUp0HcbnMVcKx+WuYnN4ffAalvniGkYiejf4zE=; b=aGr8BUAptrEpL5L5PZdva4txRKlKeka/3EpbiJfXD5peClhMgUhlBj5NgleXVX3Lrr oqGBS3c2N1hEvA5uwVFOlBlFhcskSczagy8a4tp4Gt58oAcW+RonoHBjX2FHoB2xED1i qfiNFRHbqceePLE02KN2iDaLeTCroZR+kb9v3KEmAGtvTqLxP3O1kpF9RFD+t83nAiQ0 /ZbIr1I61VEnluf1xIIpx3t/z4SCmrQCOUpt7m8LTr25FXkZTHpWsRK1U3b75soPgnI8 zMPTi8Uruz66fjw1J9rIlaoaINdrpK0QYA6EliRFvqw1bspZdigRHb8e9jX9d/SkA8U5 dFRg== X-Gm-Message-State: AOAM533BLxWO7wRdmVDYgc07Ore+zQQs2vFGVrWQttRuBra7bg58n3zi oWkmq9+VfnKMKjG4x2w9JscowU+sZS+5GM3Pwcw= X-Google-Smtp-Source: ABdhPJy1uLTBHtVCFPVg4nV0QTjgsG1T93ECC8ya1LuFemoz3QoPntOE33ru3l4Esa5CiuXeWq8z90E/9qcR7EHjsLU= X-Received: by 2002:a6b:cd87:: with SMTP id d129mr16433233iog.28.1634611556989; Mon, 18 Oct 2021 19:45:56 -0700 (PDT) MIME-Version: 1.0 References: <87sfx31dt5.fsf@toke.dk> <87pms71cmr.fsf@toke.dk> <878ryqjxke.fsf@toke.dk> In-Reply-To: <878ryqjxke.fsf@toke.dk> From: Dave Taht Date: Mon, 18 Oct 2021 19:45:44 -0700 Message-ID: To: =?UTF-8?B?VG9rZSBIw7hpbGFuZC1Kw7hyZ2Vuc2Vu?= Cc: Sebastian Moeller , Cake List , ECN-Sane Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Subject: Re: [Ecn-sane] [Cake] l4s kernel submission X-BeenThere: ecn-sane@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: Discussion of explicit congestion notification's impact on the Internet List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 19 Oct 2021 02:45:57 -0000 my more specific question was gro. On gro assembly is the dscp/ecn header examined? On Mon, Oct 18, 2021 at 6:02 AM Toke H=C3=B8iland-J=C3=B8rgensen wrote: > > Dave Taht writes: > > > An open question for me: > > > > What happens when a GSO packet is marked? Do all the packets get the > > marking, or just the first? > > When segmenting a GSO packet, the IP header is copied to all segments. > The code has grown quite complex over the years, but it's easier to see > in the original submission from 2006: > > https://lore.kernel.org/all/20060622081400.GC22671@gondor.apana.org.au/ > > Which means all packets in a GSO segment will end up marked on the > wire... > > -Toke --=20 Fixing Starlink's Latencies: https://www.youtube.com/watch?v=3Dc9gLo6Xrwgw Dave T=C3=A4ht CEO, TekLibre, LLC