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 5C4ED84A32; Mon, 13 May 2024 22:00:31 +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=1715637631; cv=none; b=SoLyzlRzx4VPuSj23jueLgD0MgE9KDxDcSShToIhKla7gxuV2cU+zSEUMYvx465nmMY8AatC/u7xjCtxMQvdbJQBPTN0DYMFOzABM33BUTdqNqBoqr/fv9/LNrmrzGbBk16L4ur/R6MXjisMBC+sjThW/WoW1Am9NimT73uubK0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715637631; c=relaxed/simple; bh=Lr/2odPaex2heP0klUvWfA40R2wy3UHboAHTLtWrDOI=; h=Content-Type:MIME-Version:Subject:From:Message-Id:Date:References: In-Reply-To:To:Cc; b=GBJS1/nXcuUfVytFAWiKEMjkAN6RxfoyE+2rMM/ZKFHtOHFlElPmU9Ta2Ze/JsCEbrNca07Ek/Bkf+/cNtq8ynH3fMsDLz22EE0cWwzsttzrS3UReJx7DvsuOa8HZMAzXx2ShkBVZpt6HM6YopZUA9VpXOM3cXuac9RjpNHy/50= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=hYm8Id1J; 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="hYm8Id1J" Received: by smtp.kernel.org (Postfix) with ESMTPS id DAAC4C4AF0C; Mon, 13 May 2024 22:00:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1715637630; bh=Lr/2odPaex2heP0klUvWfA40R2wy3UHboAHTLtWrDOI=; h=Subject:From:Date:References:In-Reply-To:To:Cc:From; b=hYm8Id1Jto9eHiVlq0qMo2uSnfXrzliyujk/9vNjcO0MuSWtxQoZlvf+n1/G2/OXK fVzcdcwRbcmR5aeUtMG9HnPf3GraG5o2aGI7MvEPF8tRUkfBeJMJU0702/ulfYkvLf xpxM5CoQi8gkZjIhx1U3YBaIs1RTHxu4c6UUjfQxQ2MOwifmgX7R24vlmzOvTAo2uK /dERlAnnOqeVsQMWF1BT4KiBtxMamJAzeQOwmnHUArjie4pgxkNi5FDKjrENGKI8KF L1miFrfKfOIfoa3QCHaTo5gyLzlczxDNTx8dUdNcRMaM+2t4i+mNOZfpAMM9owGtdu G7dTOna5rISJQ== Received: from aws-us-west-2-korg-oddjob-1.ci.codeaurora.org (localhost.localdomain [127.0.0.1]) by aws-us-west-2-korg-oddjob-1.ci.codeaurora.org (Postfix) with ESMTP id CC49EC433E9; Mon, 13 May 2024 22:00:30 +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-next] tcp: socket option to check for MPTCP fallback to TCP From: patchwork-bot+netdevbpf@kernel.org Message-Id: <171563763083.31066.11558902540602032643.git-patchwork-notify@kernel.org> Date: Mon, 13 May 2024 22:00:30 +0000 References: <20240509-upstream-net-next-20240509-mptcp-tcp_is_mptcp-v1-1-f846df999202@kernel.org> In-Reply-To: <20240509-upstream-net-next-20240509-mptcp-tcp_is_mptcp-v1-1-f846df999202@kernel.org> To: Matthieu Baerts (NGI0) Cc: mptcp@lists.linux.dev, edumazet@google.com, davem@davemloft.net, dsahern@kernel.org, kuba@kernel.org, pabeni@redhat.com, martineau@kernel.org, geliang@kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Hello: This patch was applied to netdev/net-next.git (main) by Jakub Kicinski : On Thu, 09 May 2024 20:10:10 +0200 you wrote: > A way for an application to know if an MPTCP connection fell back to TCP > is to use getsockopt(MPTCP_INFO) and look for errors. The issue with > this technique is that the same errors -- EOPNOTSUPP (IPv4) and > ENOPROTOOPT (IPv6) -- are returned if there was a fallback, *or* if the > kernel doesn't support this socket option. The userspace then has to > look at the kernel version to understand what the errors mean. > > [...] Here is the summary with links: - [net-next] tcp: socket option to check for MPTCP fallback to TCP https://git.kernel.org/netdev/net-next/c/c084ebd77a00 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html