From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2017A2EF653; Tue, 6 Oct 2026 07:04:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791270289; cv=none; b=KdgDwawQKM7xeqAiw2t4Y4ECOeGIeE/b8yxlwF1/70dB4pZU/HYaRLJ6Bz+vrBYhCGHDYCW0iTaG8ACC/nAC5FBP/Cz5UMRU0OG3hBP1G3YNd9zHdtYGUtbbbPLZWTjOersezwPCbggvP2MTvndIhO4aEQauXHTuKXqXVx1RTy4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791270289; c=relaxed/simple; bh=kaByYc/U+5tu8/jtpkw60yZal7zKeAXTBbuq/8jk5Cg=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=bCQIVgwPF1MVxb6xGOx0TwO4+ck6mRnxvK3Dde8N8v9QYXI2F9UXOilOSnAFFn0viOOEGGTQqjcBnaJ6RBFOP1qzBpP5XVgYzjsSSH5YEXEjbcWnfAvh2r+XYPOE8Zflg+/mudtICkB1qn+i/5tISqtO/5c3r2S7ylo0hhFMcHI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=cQ7Hz3Lx; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="cQ7Hz3Lx" Received: by smtp.kernel.org (Postfix) with ESMTPSA id AC5211F000FF; Tue, 6 Oct 2026 07:04:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1791270287; bh=RUjKVtdBjLrI1ETUgbz/NG6YLKPD9i8so5/lvVS1KGk=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=cQ7Hz3LxWsdH5JhGe8XrxnqREH8hJKRxvc+04/JEAla3rBTrBZ6utUBrnufu4BDfy 7t+5iZOHvAzh1AuBtrKXLkr6zxP7mgG4wwaQmg0kNgq4uaXeBWWelLGpimA29IUkYE 1lWzORtbjYaj127F/uYSKmQXRhaMnpM9ieF5v11upQVdWDvtXiY0dfAmGoKBECDkFd utGfchqxc8upLRWgrFHsan5MJX4yToZrwwwGV/FEXDtzlSWWYQGD9EkIiUeIBK0QUK G/8WXvJ6WKJYeoh4aPpK55ltDLm5Mm3L7yqR4sHC5lsKnnWf6eDBCua/AD9ekbdG6g MPNoeJuZ3Y1xg== Message-ID: <7a977ccc-b6e5-4430-8ffa-fbde5ed9f4f9@kernel.org> Date: Tue, 6 Oct 2026 09:04:41 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH net v2 2/2] selftests: net: packetdrill: test RACK after partial undo To: nramaswamy@openai.com, netdev@vger.kernel.org Cc: Neal Cardwell , Kuniyuki Iwashima , Yuchung Cheng , Jiayuan Chen , "David S. Miller" , Jakub Kicinski , Paolo Abeni , Simon Horman , Shuah Khan , linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org References: <79f83ccbd303db0a3d7c7afa5c94c7817549bd9c.1791248202.git.nramaswamy@openai.com> Content-Language: en-US From: Eric Dumazet In-Reply-To: <79f83ccbd303db0a3d7c7afa5c94c7817549bd9c.1791248202.git.nramaswamy@openai.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 10/6/26 07:15, nramaswamy@openai.com wrote: > From: Neil Ramaswamy > > Reproduces a partial undo bug where a segment is unmarked as lost but is > never returned to RACK's timestamp sorted list, which makes it ineligible > for future fast retransmission. > > Signed-off-by: Neil Ramaswamy > Assisted-by: LLM sparse > --- Thanks for this test! Reviewed-by: Eric Dumazet