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 A9FC3295DA6; Tue, 21 Apr 2026 16:07:21 +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=1776787641; cv=none; b=OKGca9zkmlJhFR7kn0nQKtP3t4sqPrTlWGCcL/a1o9eUq/25j4jjzEp4q+xbTq6PuwCWi54fZsn8uS+3TqHuTxxVD9jSAiGZEuFf+KaWNKQIaxt2XUegCIYMPkpBLMcAH4g+Osx+HFXx/T31XQqeeJfmW3+9hHdPs+HXhGO8/fw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776787641; c=relaxed/simple; bh=fKowrHbZJCe7YKyNI7Ish5wGyNOJSRJrxLJLMwb//RI=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=dkLWCO+tozuOxPnEiCYyooOUB6pSlmzTVuRMuXEkpYEyx30ImPUtbKOoPUsEYmqKCxmhwEG3H3u5XICdrhj2rDmcWOGs8pXdm4M4tC71ZbKUKgAAXt0QcdTdZL5dI1RwqzgZTd7dQhPn4OeuSMzsc0LANVQZQWzgl3y7sFLCqCc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=uZifecUu; 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="uZifecUu" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5A953C2BCB0; Tue, 21 Apr 2026 16:07:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1776787641; bh=fKowrHbZJCe7YKyNI7Ish5wGyNOJSRJrxLJLMwb//RI=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=uZifecUuEovU4uCy7/OkoJAYaN5EbLkhRENzu2sCsqyrbjiGtlu25mmmH424rC705 sU1IHpnZX2Hfyq2JiLYnDE9STwgsSFoXj6q7hDgBlav0Yp7WjZXCKGxf8OYBO9YA55 Fb7+t6dL54FBWveGEI4Ka0rBNyJNNDkQBfxIKV6EasVUUXN766/jlMXt5Wq0y4DXeM zhAt6b9BZYpGoz0EPu8SeEgcUPelnrT8X55UXje8qs3C7fG2kZHDCIqUaphe9GIWFI 54f3q5QZCRMJYHZtNNqW4aMeGfABtcPyBo5Te9Hoy9H6X0beX/hvdh0ru/Q4wQmTzk lbM2ydP1do4LA== Message-ID: Date: Tue, 21 Apr 2026 18:07:15 +0200 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Beta Subject: Re: [PATCH 0/3] mptcp: add RECVERR and MSG_ERRQUEUE support To: David Carlier , netdev@vger.kernel.org, mptcp@lists.linux.dev Cc: martineau@kernel.org, geliang@kernel.org, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, horms@kernel.org References: <20260421152216.38127-1-devnexen@gmail.com> From: Matthieu Baerts Content-Language: fr Autocrypt: addr=matttbe@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit Hi David, On 21/04/2026 17:22, David Carlier wrote: > MPTCP already advertises IP_RECVERR/IPV6_RECVERR as supported, but the > parent socket does not currently provide usable MSG_ERRQUEUE handling. > > This series wires the MPTCP socket up to the IPv4/IPv6 error queue > paths. It propagates RECVERR-related sockopts to existing and future > subflows, makes poll() report pending errqueue activity through the > parent socket, and allows recvmsg(MSG_ERRQUEUE) on the MPTCP socket to > consume queued errors with the parent socket ABI. > > The series also handles mixed-family subflows by applying the matching > sockopt according to each subflow family, and avoids silently losing an > error skb if requeueing to the parent socket fails under rmem pressure. Thank you for this series! Even if I agree it would be good to have full MSG_ERRQUEUE support, net-next is currently closed, and only bug fixes are accepted, see: https://docs.kernel.org/process/maintainer-netdev.html pw-bot: defer Instead, I suggest switching the discussions only to the MPTCP ML if that's OK. If the CI is happy, someone will try to review it over there, when time permits. If not, please send the new versions only to the MPTCP ML, with the 'PATCH mptcp-next' prefix, and ideally on top of the 'export' (or 'for-review') branch of our tree. For more details: https://www.mptcp.dev/contributing.html#kernel-development Cheers, Matt -- Sponsored by the NGI0 Core fund.