From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-qt1-f181.google.com (mail-qt1-f181.google.com [209.85.160.181]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3C4932DEA8F for ; Thu, 21 Aug 2025 12:24:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.160.181 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755779069; cv=none; b=owmqw9tGzLxcV4Nf9vA6ky7RxUgX86mygp/H32c6gUhmyaPbJSREW6iB8oW6G7PXtrgs/4xc7Cr0lM/S0R8v8P/qBbzbLPgayJ+hzSKpfGTYWQzALYZyLcessICokfljhD3jR8HPbbJKiiMYJGRIEPi18RTr7DumL6f2TrePl7U= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755779069; c=relaxed/simple; bh=f1AbBbvLlmetpbm2cknoVOkum8sEWbncoukC/4LrwuI=; h=MIME-Version:References:In-Reply-To:From:Date:Message-ID:Subject: To:Cc:Content-Type; b=dTuk15QGlSESUBk9gL0XevWO9SfWVtvgM8ud1sayH9N2xMw7gmdUUTOsw8G48WH61unmE/JN2pVBIWCvlkAOuApzylYaQrk5/VfYy1IFrkIVpUc3PNJKp32iO+FLoszPqsqz1yfEI+sX+1CZl3IEbECYJKnZ0PbDykGSFaIP8js= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=1d0O64rI; arc=none smtp.client-ip=209.85.160.181 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="1d0O64rI" Received: by mail-qt1-f181.google.com with SMTP id d75a77b69052e-4b109914034so10813281cf.0 for ; Thu, 21 Aug 2025 05:24:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1755779067; x=1756383867; darn=vger.kernel.org; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=f1AbBbvLlmetpbm2cknoVOkum8sEWbncoukC/4LrwuI=; b=1d0O64rICsWpfp1eb4Q5gc2LxsR6uLVDSPIZcm8PyqVlfeafi0vD4fErSm4wlrEwGY /1C5qgn34lKV/0q8/M2nkGtaLrphZRFmZJxRp1sq+trcmeasboSJlozEWSfuMVj5v2ln pS9wSyf7yCWv01yYzqo27s37v/XmdSFrHvIcVpyVn6NtPjWJRsReafak0htJaHRKJe6N il5/tD0mWSvOwIaTSwHaqHL+w1QjF5BxZScQ8x4Z4m2EzA9dpcH93fFQfASCSCdWVMDS eis4A4mS+ZKuiweh7NLa8za4Hc1zI02G+ScsdFmibuMenFxbz/1Z008uPaI5wDi9Sex0 QTEA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1755779067; x=1756383867; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=f1AbBbvLlmetpbm2cknoVOkum8sEWbncoukC/4LrwuI=; b=Bqqa5agKOvuSdbuKErE+ukeEQ/F8H552kE5se06dVx27QKi64Pyld7WfLn+2F38Pyu YyEEbbRpGp9F0y1V0aSvMLjUSvAVLkm7cY0ujU6XAIO6YXMg70QAn/KZdJkMhTJBN4kR 0GqAcJ2XaRuZ416ocer+bQPtvt6FbGXLSNkcRIo9UdIg1IAspG5z7TwRkTW8YA6BINqj yf5TdyCoAWWt+ziGALnW+cORKX49gGGh2XZMOPcEynGRu5IwOVkN9O+TUOTPOphmLwMi uEveNobzn/LSorQ0/Xsvrmj4UBLXIhx11o8i5pwUvGtCXPI7vslmVQX7ZJVwK45eJGsc kIIA== X-Forwarded-Encrypted: i=1; AJvYcCWIk5l3gPK/TtapdWHqt32GY0y46mQwDeurEp2iOK3JuS/xJg2eru/tdNpjy9uqELCaBA31ihE=@vger.kernel.org X-Gm-Message-State: AOJu0Yz44+VYwmgpdmoPNSzlHA9bRv1Yu/yGosnuPIN5A22ucYDO6wHi 7qkCtgk/8e8pdjS80dnXuZRzNaXLVUdSrkP14A4lXG6YFB3Ztds+irw2ieNbscAwIN/uODxhusa +qJioD4Uk/9x/zooBwhKAvEkb0M5DtlrHNDT5Ql79 X-Gm-Gg: ASbGncvJzhCbhs4CS6TWSu21Vq0OYt4TDvUr0bBBdZJKz4Vugn7nFXZkbWKOUMSAo1q RgbtALjgMtCMXZ6GLeFIdYi+IKnl76G/WBriQSrVgYw2KQD72+/3dQ5v4NqOu87WkxhrxSwafNK Dc9PnrIEPTZyYjSHBaBmoJF7kEdxbmkAiw9mYj9v5JxE4rp2MEQfRnEMk5iRlNHItbGtuUd6X8g dnKnjB8fzikdr4Xwa2u4ROXqg== X-Google-Smtp-Source: AGHT+IE9nHthnuO3iyaaTFTophq+5yluqv4flsuTIbWyobQg+AKCHWYdoAelc0nDHS8WwCDQgE8Y49CEmLBBB7iUtng= X-Received: by 2002:a05:622a:5e17:b0:4b2:8ac5:25aa with SMTP id d75a77b69052e-4b29ffc2c09mr20057031cf.83.1755779066699; Thu, 21 Aug 2025 05:24:26 -0700 (PDT) Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 References: <20250815083930.10547-1-chia-yu.chang@nokia-bell-labs.com> <20250815083930.10547-9-chia-yu.chang@nokia-bell-labs.com> In-Reply-To: <20250815083930.10547-9-chia-yu.chang@nokia-bell-labs.com> From: Eric Dumazet Date: Thu, 21 Aug 2025 05:24:15 -0700 X-Gm-Features: Ac12FXz4ItLodbd6ls4z56PUPr7M6ZV9VCYXJm2RKx6YiZF5T39E5oM6J1bp_oU Message-ID: Subject: Re: [PATCH v15 net-next 08/14] tcp: accecn: AccECN needs to know delivered bytes To: chia-yu.chang@nokia-bell-labs.com Cc: pabeni@redhat.com, linux-doc@vger.kernel.org, corbet@lwn.net, horms@kernel.org, dsahern@kernel.org, kuniyu@amazon.com, bpf@vger.kernel.org, netdev@vger.kernel.org, dave.taht@gmail.com, jhs@mojatatu.com, kuba@kernel.org, stephen@networkplumber.org, xiyou.wangcong@gmail.com, jiri@resnulli.us, davem@davemloft.net, andrew+netdev@lunn.ch, donald.hunter@gmail.com, ast@fiberby.net, liuhangbin@gmail.com, shuah@kernel.org, linux-kselftest@vger.kernel.org, ij@kernel.org, ncardwell@google.com, koen.de_schepper@nokia-bell-labs.com, g.white@cablelabs.com, ingemar.s.johansson@ericsson.com, mirja.kuehlewind@ericsson.com, cheshire@apple.com, rs.ietf@gmx.at, Jason_Livingood@comcast.com, vidhi_goel@apple.com Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Fri, Aug 15, 2025 at 1:39=E2=80=AFAM = wrote: > > From: Ilpo J=C3=A4rvinen > > AccECN byte counter estimation requires delivered bytes > which can be calculated while processing SACK blocks and > cumulative ACK. The delivered bytes will be used to estimate > the byte counters between AccECN option (on ACKs w/o the > option). > > Non-SACK calculation is quite annoying, inaccurate, and > likely bogus. Does it mean AccECN depends on SACK ? > > Signed-off-by: Ilpo J=C3=A4rvinen > Signed-off-by: Chia-Yu Chang > Acked-by: Paolo Abeni Reviewed-by: Eric Dumazet