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 233252F8EAF for ; Fri, 8 May 2026 10:49:42 +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=1778237383; cv=none; b=kSNX4BQwkYBuWZs11n9TjMpShXkqdolJQBOIu+AjRZjT5vm3BQa4C65f9VfGq3To23qwEoE8c3kWNv0x5pK+i37k+CSPbRJ25BVnBH5E1wBHNnCXE0Kg5XNrQoJrh/mNve9vQjrO3nMUmtEp2lv8LzDPyCp5GZpzuxkL23j4+qs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778237383; c=relaxed/simple; bh=Gg3msXyuJ8ENU17KtpooAUBaLp0NkRlhWIKGdAnSdcU=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=QzcoB+08CUInfulZvnYvY0JBkb9idYlSTLYdOGLRWWywtDyqBBSBpKfIhZOPdZJA3xZ2t+mQ4bw4/jdG1q/aJmmrEntmiZyvsnfJyCPRmG7Z3XP+GBIIX2n3ySoD+Dbwm5dA+X7nIQmQ0hEfkQHiAaxY8mkEsGhBLdpOTyO2UGM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=R3mp/dqD; 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="R3mp/dqD" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 954E7C2BCC7; Fri, 8 May 2026 10:49:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1778237382; bh=Gg3msXyuJ8ENU17KtpooAUBaLp0NkRlhWIKGdAnSdcU=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=R3mp/dqDEWRmP7x+j4CGzQ1E2lsY/5YhiBkb+ZGiBQ0XEUBCEjIyamQzz5aoCLb1o +MeFAP7oo0O8pFkklCSL74fAciwD2beTwxKWBTtdHXHgSwxK/Uev9/s0ZkQr1z3a1l RmTqGq2SfYeYUZ2pdDAjLiggcH7yrBlHWlNCixYGha5DvwHLmzf57rrXOLgRkvfpdE C3MUHQCATp6VVE9ppirf5ybzavlqBw0duasv7hPfRiHQrKjweFRDVpm95X5ZGSXOQN TsfVigBBFjUkazF6p2UAR3wcSCdTRfuDUxSNWDtxIUaQdQtypdYZVhDuWw+VVuLxCE oQwjm/wtlamEQ== Message-ID: Date: Fri, 8 May 2026 12:49:39 +0200 Precedence: bulk X-Mailing-List: mptcp@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Beta Subject: Re: [PATCH v3 mptcp-next 00/10] mptcp: address stall under memory pressure Content-Language: fr To: Geliang Tang , gang.yan@linux.dev Cc: Paolo Abeni , mptcp@lists.linux.dev References: From: Matthieu Baerts Autocrypt: addr=matttbe@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit Hi Geliang, Gang, On 04/05/2026 17:39, Paolo Abeni wrote: > This an attempt to fix the data transfer stall reported by Geliang and > Gang more carefully enforcing memory constraints at the MPTCP level. > > Patch 1/10 moves the bound check before entering the TCP socket. > Patch 2, 3, 4 and 5 are cleanups/refactors finalized to safely re-using > TCP helpers on MPTCP skbs. > Patch 6 makes TCP pruning related helpers available to MPTCP and patch 7 > makes use of them. Patch 8 addresses an edge scenario that could still > lead to transfer stall under memory pressure. > Finally patch 9 and 10 improve the MPTCP-level retransmission schema to > make recovery from memory pressure significanly faster. > > Note that the diffstat is biases by the quite large patch 4/9, which > contains mechanical transformation of existing code; "real" changes are > noticiable smaller. > > Tested successfully vs the test cases proposed by Geliang and Gang and > vs the selftests. At the last meeting on Wednesday, Geliang mentioned he validated this series. Just to be sure, was it the v2 -- from last week -- or the v3 -- from this week, while you were in EU -- that you validated? Because Paolo couldn't reproduce the issue you mentioned on the v3 on his side. Cheers, Matt -- Sponsored by the NGI0 Core fund.