From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 8540D3376B3; Thu, 11 Sep 2025 14:36:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757601392; cv=none; b=QqmmMULWST15FQ2bk+zHvs13OzWxkeaDK2ZwM5nUEv5hRa7XCS4rkAFb6iB1pexMxCjrJFODCPV5catQOWRE7F/CqxEa3DtoNES2SVECuKdUrIX1cSc2nVXl6EMnJ5125j4JGABL6ZMXQXhUO6K0uYOLMK8TBd19Ai2e3wCX4MQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757601392; c=relaxed/simple; bh=xmwE7Dd3BUl4FfFfkILXOnu6GtYmwpiyNr7Jy+EZ2oQ=; h=Date:From:To:Cc:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=jCLxhWTRQylvemHlB9rxtDF5tEhYlnBLb73dOWpkj7NhNAdrYBuCxXkZX9x6br6O0IzSpAzION79BlRx2wuYdHc8e6WSGjm8qchFnxD704cv0QK0UiFs99eAwf0QwQib/xkGglkj9BfhOKA8JYTthQonbwJFadKs6EHEr/X/GP4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=NaFkYOP4; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="NaFkYOP4" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A12B5C4CEF0; Thu, 11 Sep 2025 14:36:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1757601392; bh=xmwE7Dd3BUl4FfFfkILXOnu6GtYmwpiyNr7Jy+EZ2oQ=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=NaFkYOP4lP4otQm6RHM9IPoLQW55MnIzhxxRrdtHCErFJ7RT5CKT5pX+QCwsTW8iG K/FQNLVPKBwte1CuNpMA3PF/vhHHDa5jnVE9v/bbmUBtn8k+TNY5dxue3QWQ+WL4n3 pLnXp99/4OBJ0XHsXKkhYstxoF/uGqlB772S9nRJ5/jn9GSp1vQwvnVvVv+kG05ceT PMVoDlcdD8jx3pLoXG21JwDu7uXOkdzYY3hSaPGOKkBZu8ahDTA5lI74q7xAsmNF9X KH/KuKzXfcsU6zRVAs/3eMcMrkEjelhO9jxXWkGan2tipU5bJ2XN5SpBHgiF0vfZrz HEcAxG5NHCg8A== Date: Thu, 11 Sep 2025 07:36:30 -0700 From: Jakub Kicinski To: Mark Bloch Cc: Eric Dumazet , Paolo Abeni , Andrew Lunn , "David S. Miller" , Tariq Toukan , Leon Romanovsky , Saeed Mahameed , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Gal Pressman , linux-rdma@vger.kernel.org, Alexei Lazar Subject: Re: [PATCH net V2 10/11] net/mlx5e: Update and set Xon/Xoff upon port speed set Message-ID: <20250911073630.14cd6764@kernel.org> In-Reply-To: References: <20250825143435.598584-1-mbloch@nvidia.com> <20250825143435.598584-11-mbloch@nvidia.com> <20250910170011.70528106@kernel.org> <20250911064732.2234b9fb@kernel.org> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Thu, 11 Sep 2025 17:25:22 +0300 Mark Bloch wrote: > On 11/09/2025 16:47, Jakub Kicinski wrote: > > On Wed, 10 Sep 2025 17:00:11 -0700 Jakub Kicinski wrote: > >> Hi, this is breaking dual host CX7 w/ 28.45.1300 (but I think most > >> older FW versions, too). Looks like the host is not receiving any > >> mcast (ping within a subnet doesn't work because the host receives > >> no ndisc), and most traffic slows down to a trickle. > >> Lost of rx_prio0_buf_discard increments. > >> > >> Please TAL ASAP, this change went to LTS last week. > > > > Any news on this? I heard that it also breaks DCB/QoS configuration > > on 6.12.45 LTS. > > We are looking into this, once we have anything I'll update. > Just to make sure, reverting this is one commit solves the > issue you are seeing? It did for me, but Daniel (who is working on the PSP series) mentioned that he had reverted all three to get net-next working: net/mlx5e: Set local Xoff after FW update net/mlx5e: Update and set Xon/Xoff upon port speed set net/mlx5e: Update and set Xon/Xoff upon MTU set