From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx3.switch.ch (mx3.switch.ch [85.235.88.34]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id B86693B29D for ; Tue, 2 Apr 2024 06:40:47 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=switch.ch; l=556; s=selector1; t=1712054447; h=from:to:cc:subject:in-reply-to:references:date: message-id:mime-version:content-transfer-encoding; bh=pkUWfd72veUdoYXtkaP6/RVmOscAJA5GTQn3vkZPOx0=; b=IZHHJJ2c49ptt692SgB/wfhMI3QETAYUj6lqxQ0WsVlPe0vESrS81zq5 r+MZQo9oz1YBmXmbENIhT/K1yQ90PhRqlJZj3XYjVx7mZI9eb10mDARre OYzBm9iE9/CBrGHsdwJFwd+XA38Mn8tFMu2q4ifikTPZZMKjKBk9Trpq8 moSsNYbouuWXzHeaaqPtaVA8peyr+m/d3HmbXwS4i/mUiklusZPktjJ/O 8FxC3/1ZI69XUprx3IpIG0JvzYtQKpHN0tl1haCverwatejQ/MN7oGFXO 8JuDBwEyBtAUsXwjLVrlm3Z9hrJa9bHm88hyjjlXWE8VeO7qwYTHalCmg g==; X-IronPort-MAIL-FROM: simon.leinen@switch.ch X-IronPort-AV: E=Sophos;i="6.07,174,1708383600"; d="scan'208";a="7685028" Received: from unknown (HELO SWH-S04-EXC2.swd.switch.ch) ([172.16.60.12]) by mx3int.switch.ch with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Apr 2024 12:40:46 +0200 Received: from macsl (172.16.60.33) by SWH-S04-EXC2.swd.switch.ch (172.16.60.12) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1258.32; Tue, 2 Apr 2024 12:40:46 +0200 From: Simon Leinen To: Toke =?utf-8?Q?H=C3=B8iland-J=C3=B8rgensen?= via Bloat In-Reply-To: <87v850n7qu.fsf@toke.dk> ("Toke =?utf-8?Q?H=C3=B8iland-J?= =?utf-8?Q?=C3=B8rgensen?= via Bloat"'s message of "Mon, 01 Apr 2024 22:33:13 +0200") References: <87frw5nrsv.wl-jch@irif.fr> <87v850n7qu.fsf@toke.dk> User-Agent: Gnus/5.13 (Gnus v5.13) Date: Tue, 2 Apr 2024 12:40:45 +0200 Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Originating-IP: [172.16.60.33] X-ClientProxiedBy: SWH-S06-EXC4.swd.switch.ch (172.16.60.18) To SWH-S04-EXC2.swd.switch.ch (172.16.60.12) Subject: Re: [Bloat] The sad state of MP-TCP X-BeenThere: bloat@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: General list for discussing Bufferbloat List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 02 Apr 2024 10:40:48 -0000 Toke H=C3=B8iland-J=C3=B8rgensen via Bloat writes: > Juliusz Chroboczek via Bloat writes: >> There should be a knob in the kernel to transparently replace TCP with >> MP-TCP, but I couldn't find one. > There is, sorta. Specifically, a BPF hook that can override the protocol > (added in kernel 6.6): > https://lore.kernel.org/all/cover.1692147782.git.geliang.tang@suse.com/ So all we need is a small modification to, say, liblzma, to make systemd install that hook when calling sshd. Right? ;-) --=20 Simon.