From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: passt.top; dmarc=pass (p=quarantine dis=none) header.from=kernel.org Authentication-Results: passt.top; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=cDynxUzf; dkim-atps=neutral Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by passt.top (Postfix) with ESMTPS id 1A46B5A061E for ; Thu, 30 Jan 2025 04:10:14 +0100 (CET) Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 03EB75C5D53; Thu, 30 Jan 2025 03:09:32 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id D605CC4CEE2; Thu, 30 Jan 2025 03:10:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1738206611; bh=McN2GEcVhIZ14GUuz8FioT7LeLoacv9tH0nd2DPuqxA=; h=Subject:From:Date:References:In-Reply-To:To:Cc:From; b=cDynxUzfim84+UmwbO6WQpf3QFb2hxbBlCzO3xfyH1EHo3eTj39KohUERkjoM53OD 3YrZDUDTwLSifxZij7UnyLeT1nUkQKH5Qmzd6R8ddz2PiuyYhMQfZUL3pSApDQSurc Stc8FTBdV5LeFSnVAzVuxqJwaVP8dZc3TLe9kOeoDNELdE+xA7c/L+lY7F6+m7MrAg IMcULfHROxakfKiWAq5CxQIN7IMe6FYK+7pO4uC/j513oCHzvOq3h3mxCaU1Fy2bWr HsHfO/2k4ayLG/5xrqTMIZlVc+O0Gg0bqDAQ0G286QdpI7Q5J1hH5ExK+8eURrIxYn iY4gfRHfQQK+w== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id 3663F380AA66; Thu, 30 Jan 2025 03:10:39 +0000 (UTC) Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [net,v3] tcp: correct handling of extreme memory squeeze From: patchwork-bot+netdevbpf@kernel.org Message-Id: <173820663775.510125.11642724100877791726.git-patchwork-notify@kernel.org> Date: Thu, 30 Jan 2025 03:10:37 +0000 References: <20250127231304.1465565-1-jmaloy@redhat.com> In-Reply-To: <20250127231304.1465565-1-jmaloy@redhat.com> To: Jon Maloy X-MailFrom: patchwork-bot+netdevbpf@kernel.org X-Mailman-Rule-Hits: nonmember-moderation X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation Message-ID-Hash: KCXBKJM25ZV4XVUXS4UGVDDOVWBPMS3B X-Message-ID-Hash: KCXBKJM25ZV4XVUXS4UGVDDOVWBPMS3B X-Mailman-Approved-At: Thu, 30 Jan 2025 07:29:46 +0100 CC: netdev@vger.kernel.org, davem@davemloft.net, kuba@kernel.org, passt-dev@passt.top, sbrivio@redhat.com, lvivier@redhat.com, dgibson@redhat.com, memnglong8.dong@gmail.com, kerneljasonxing@gmail.com, ncardwell@google.com, eric.dumazet@gmail.com, edumazet@google.com X-Mailman-Version: 3.3.8 Precedence: list List-Id: Development discussion and patches for passt Archived-At: Archived-At: List-Archive: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: Hello: This patch was applied to netdev/net.git (main) by Jakub Kicinski : On Mon, 27 Jan 2025 18:13:04 -0500 you wrote: > From: Jon Maloy > > Testing with iperf3 using the "pasta" protocol splicer has revealed > a bug in the way tcp handles window advertising in extreme memory > squeeze situations. > > Under memory pressure, a socket endpoint may temporarily advertise > a zero-sized window, but this is not stored as part of the socket data. > The reasoning behind this is that it is considered a temporary setting > which shouldn't influence any further calculations. > > [...] Here is the summary with links: - [net,v3] tcp: correct handling of extreme memory squeeze https://git.kernel.org/netdev/net/c/8c670bdfa58e You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html