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 A00643D4105; Thu, 24 Sep 2026 02:21:21 +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=1790216482; cv=none; b=J6wK2fYrgusUPPzS2e65Mrc2lQdKe7Zya4plC90aEsjYwuU0XXntMYTda5OfJ5yL4ErKTs+2brSBQJ2NwULaPqx5PcWM7V0qJOm3zWJ5TUG/RhjYq+Bo/Ij8xduwUlVRcjaymNpGMDJrzz09gynAITOK5i6WX03aEC6F1J/uGmQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790216482; c=relaxed/simple; bh=Sm6bnS2pV7Ag0KFzCgihKpk3lUjwWhQuR3iS6NSTK3k=; h=Content-Type:MIME-Version:Subject:From:Message-Id:Date:References: In-Reply-To:To:Cc; b=EcZvmgYrC4iYVVGN3OrrtXrBY1LED9hrI3RcgqHR7P2A/HemTzg+KE6DZZcSsw3vyrzgAhxbga22rkUCZLtNocSoh8gjRdXhsW0Vz9SKwHNVijKdmequUvWwcwMP+5RKhp7eXs2zjeM8l16t39veLhnmnjjGpYqxKtZDVkRjw0E= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=jYJdmDB5; 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="jYJdmDB5" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4D2FF1F0089A; Thu, 24 Sep 2026 02:21:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1790216481; bh=gyd5eF0E4AsniF6TDy3gHsIt1ARThOCPqrBkSs04BdQ=; h=Subject:From:Date:References:In-Reply-To:To:Cc; b=jYJdmDB5ZiYjEtpLxV/XEhjWGwYUwFiGP3XI+qADKRg3JTUrhlN1fNHUSgilVvlx6 TeeO140UHvA519j2SjpWwfu/EVbovO4TbNIUY8TPFq2cH0eaiKBLNCnWEsxbZROJxQ IHzP/ZY72LZ3122KCAeHzTLNqIJh1Bh6qCRZYkuiX/qcq8RgFwnuMQG2VadvgxtDY+ x0pwQS6WqAqtZ0Fnp4kmtAOedbxneg3IDd1yBYMYNNY44Cy9jiU4QPfc7k2N1Ox4E7 iH80tlPp8RFDvSd/eUcWKF+geB6uy6JCV7JOxkEu+soYseSuPNJaqZw+tK9gNJqHp5 Osh6utEt7oG2Q== Received: from [10.30.226.235] (localhost [IPv6:::1]) by aws-us-west-2-korg-oddjob-rhel9-1.codeaurora.org (Postfix) with ESMTP id 199A639E9611; Thu, 24 Sep 2026 02:20:12 +0000 (UTC) Content-Type: text/plain; charset="utf-8" Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: Re: [PATCH net v3] net: ipv6: keep room for the mac header in dst_dev_overhead() From: patchwork-bot+netdevbpf@kernel.org Message-Id: <179021641064.1281065.11687596089740883576.git-patchwork-notify@kernel.org> Date: Thu, 24 Sep 2026 02:20:10 +0000 References: <20260922-seg6-maclen-headroom-v3-1-7b2f982ef79d@gmail.com> In-Reply-To: <20260922-seg6-maclen-headroom-v3-1-7b2f982ef79d@gmail.com> To: Yuya Kusakabe Cc: andrea.mayer@uniroma2.it, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, horms@kernel.org, justin.iurman@gmail.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Hello: This patch was applied to netdev/net.git (main) by Jakub Kicinski : On Tue, 22 Sep 2026 05:49:56 +0900 you wrote: > The seg6, ioam6 and rpl lwtunnels size their skb_cow_head() request as > the length they are about to push plus dst_dev_overhead(), then push the > new headers and rebuild the mac header below them with > skb_mac_header_rebuild(). That rebuild needs skb->mac_len of headroom, > but dst_dev_overhead() leaves LL_RESERVED_SPACE() of the egress device, > 16 bytes for plain Ethernet. > > [...] Here is the summary with links: - [net,v3] net: ipv6: keep room for the mac header in dst_dev_overhead() https://git.kernel.org/netdev/net/c/87cd6b717e40 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html