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 9AAC63B3C0F; Thu, 8 Oct 2026 17:50:09 +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=1791481810; cv=none; b=SuijHt8uvhR3uHxvth0XAjYT+RDM+4/LNMdU7jBFaWLmh7I6OE0FNs797IqjewTNBUEg6LEGXPgDWfezD+G27bgc10YLYT/8MzJW3BD1aU4repKXg+UIxxcz5JCfG5YlFnQqUqRFR3/Zf8IUGYQILqhqLRqaDpj4GHhvof/Ir5s= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791481810; c=relaxed/simple; bh=TUvUUXllTc6eNpEER8QJkCPOrI3EAlLz1SjqM8uSpYs=; h=Content-Type:MIME-Version:Subject:From:Message-Id:Date:References: In-Reply-To:To:Cc; b=Imb176FBmblbzj1QbzSlbjBPRzB3qPdrXFNpSk/11JbJge7lCDZQLljS6JBZ0spI44bDbq+dmw6hXzeOgloNJfOdQ8QH6xPrH+i8Qe/CQTG0ImS4t35e/sTS+c+FHol7R/xMNDa9T/jLK9hXsYaHmNYZOorEo1CboibtiVaj/wM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ed+BZ5gi; 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="ed+BZ5gi" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 468301F000FF; Thu, 8 Oct 2026 17:50:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1791481809; bh=bbf892qVAu2p6RQcZnFrS2jd5CGTl+B0MWLIpreU0x0=; h=Subject:From:Date:References:In-Reply-To:To:Cc; b=ed+BZ5giRvDHW/LX7QtVxXXaK2td0Ne+Q7Mh2A+aTwBLZlamsBIXNXA3H0WeO05iN EEutzmRdBarnTD/1bQA3Ly9EP2nCMHYZhdy5a4Y4yFmGaFsHMg6+4ztq1CI2IZ+PrI uGEd9svyd3aRxAVekn4eb9Y32Fvcfoi2BINnSdivEGpw1PVvTRUYgNOudgipalro8C sXfu+JuyvXHDREHbnhDZ8yPJFyPfCs7HeyqOgDtZp3pUo+zvBn8IUTZ+8jWsp7alqa 6e4+n3/GQRLorw6YjbEyIi7PyK7u/jfmITlNLQSEBBQQ6MdyBw5Z8qeOlooZ/1Y7Wh Qy7TdYNK5aFJw== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id 3A3B9380AAFF; Thu, 8 Oct 2026 17:50:09 +0000 (UTC) Content-Type: text/plain; charset="utf-8" Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH net v2] net: mana: reserve RX buffer headroom to fix forwarding performance From: patchwork-bot+netdevbpf@kernel.org Message-Id: <179148180777.369078.5370771541534290369.git-patchwork-notify@kernel.org> Date: Thu, 08 Oct 2026 17:50:07 +0000 References: <20261003013647.2051416-1-hamzamahfooz@linux.microsoft.com> In-Reply-To: <20261003013647.2051416-1-hamzamahfooz@linux.microsoft.com> To: Hamza Mahfooz Cc: netdev@vger.kernel.org, haiyangz@microsoft.com, wei.liu@kernel.org, decui@microsoft.com, andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, kotaranov@microsoft.com, horms@kernel.org, ast@kernel.org, daniel@iogearbox.net, hawk@kernel.org, john.fastabend@gmail.com, ernis@linux.microsoft.com, gargaditya@linux.microsoft.com, dipayanroy@linux.microsoft.com, leitao@debian.org, jacob.e.keller@intel.com, ssengar@linux.microsoft.com, linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, bpf@vger.kernel.org, stable@vger.kernel.org Hello: This patch was applied to netdev/net.git (main) by Jakub Kicinski : On Fri, 2 Oct 2026 21:36:47 -0400 you wrote: > Commit 730ff06d3f5c ("net: mana: Use page pool fragments for RX buffers > instead of full pages to improve memory efficiency.") started handing > out RX buffers with zero headroom so that two buffers fit into one page > at the default MTU. > > The MANA TX path, however, stores the per scatter-gather entry DMA > mappings in `struct mana_skb_head` at skb->head, and mana_start_xmit() > therefore calls skb_cow_head(skb, MANA_HEADROOM). The port advertises > this requirement as ndev->needed_headroom = MANA_HEADROOM. > > [...] Here is the summary with links: - [net,v2] net: mana: reserve RX buffer headroom to fix forwarding performance https://git.kernel.org/netdev/net/c/259c4a519100 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html