From patchwork Mon Aug 26 15:59:03 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Matthieu Baerts \(NGI0\)" X-Patchwork-Id: 822941 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 175BC198838; Mon, 26 Aug 2024 15:59:37 +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=1724687977; cv=none; b=Encoz9yZfwp1DKgo/vTlFij6Nk3lAy2TMI9k1ualvImVlPohjozQFTV2iHabX8ZToUmfD8/mam8uq0k+QxT94z0BFDUO6n2tZgKML1OkyVfaeggZqmPmYMjZgt3vDQWt/S5aJPNNJ7Q56jUE2dArv6CB+cD8uS7fSNtvRzIRpDY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724687977; c=relaxed/simple; bh=LmV+esdBEe916xs5xmg/co551PZP2TIQKsdBgoEOmMY=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=OP2w6oWNz+ZYGqz4cxqtyE2/YxPceNuBfaCt+6YoRSjOhO1LM2DqL+3X2dlh3sY1skkJv21E10xC97x64MzzO2NxFWJfv3lqYZHTtddV46K/AgFhFm+Kwb5so+u+64emKMJbwJcGBx/IGNdVkd3lSK/MwkpPjBLUDJEWE85Sz08= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=T7iOtKmk; 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="T7iOtKmk" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E7222C52FFB; Mon, 26 Aug 2024 15:59:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1724687977; bh=LmV+esdBEe916xs5xmg/co551PZP2TIQKsdBgoEOmMY=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=T7iOtKmkSg6B4lQ7cEcO978h3UBChjmumhptu+sq3ovQwgqU1m4LvojcT12IfSF7S 5F+B7cW6plBXkGKxsEjJUwh5Y/CE6XfkOjQcpwzpjKoyRXMR29C7EO8+8hPPTFi2YC Ey/yyQrM8zYmHUekdBzESctJrZF7n2D1IB8jHsYQt1PwDFy/v9fKEP30ME/IdyEeCt XkTy4eaXzZGgwmUcxz1Nnsx3dym/puXauu4kdCDLDyYGW0Mg6wdkku5aqRsn102Jm7 +QKsum8bCqlM21dOI4Gm9kvr+OjC90bG0RSrNb7NDUjI/0oxdfkR7+AwrhR18cAigC Hm0OPZcO7nzFQ== From: "Matthieu Baerts (NGI0)" Date: Mon, 26 Aug 2024 17:59:03 +0200 Subject: [PATCH net 04/15] mptcp: pm: send ACK on an active subflow Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240826-net-mptcp-more-pm-fix-v1-4-8cd6c87d1d6d@kernel.org> References: <20240826-net-mptcp-more-pm-fix-v1-0-8cd6c87d1d6d@kernel.org> In-Reply-To: <20240826-net-mptcp-more-pm-fix-v1-0-8cd6c87d1d6d@kernel.org> To: mptcp@lists.linux.dev, Mat Martineau , Geliang Tang , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Shuah Khan , Florian Westphal Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, "Matthieu Baerts (NGI0)" , stable@vger.kernel.org X-Mailer: b4 0.14.1 X-Developer-Signature: v=1; a=openpgp-sha256; l=1147; i=matttbe@kernel.org; h=from:subject:message-id; bh=LmV+esdBEe916xs5xmg/co551PZP2TIQKsdBgoEOmMY=; b=kA0DAAgB9reCT0JpoHMByyZiAGbMplbIHWKwLX8Sdft9Uv2XLVWRhoOeIQarFY7Tn9jTHVYUy IkCMwQAAQgAHRYhBOjLhfdodwV6bif3eva3gk9CaaBzBQJmzKZWAAoJEPa3gk9CaaBz25cP/iR8 55pcFzbFM0gPn38CaB48MwOQrqQokz+Cq4D/uc597qbzBvx1EzUSu5QjWIdQjHECKtMFLAWXr4j WjjVLsYSOaSu6gC3AOOORqEP/YTQr52hZexu0UzZOnGm0ALJ5LJ5a/n+FYh8WPQKZByFthXPozP wHXPmlWpsgTPZYBe6ODSFFKvxclK095Ax0NqlESUcdaEuenfUTTstLFSQjJilbeTQapLcKz4dEa u2caRvgJ4UQgG/YTYsH+jS4qPUdfIsXRRBJDX0xKzIuDWMbg/WDGGkpXVhKUYbWAOMg+5OmgtfV N7JmvKn+pOdTiMmUrrXjwWw2Gl3Owhb/T9wOc51YlHM3od53g4v0zD9c/SSIcCwKN4R4SYL0Wc2 qCT3dugEdvLUwxM43CFg76Hj5o8xz4YlRisBC+bmTHOQqe/DTJq56d4fK3bMPzoKTee7Bjq8GYZ kOyaIOcg/eTxwafS3JB87gG5jBh29nyJ283Yh+IFKWmNXqcyXT7TYT91lFhnER//I3bVC4vtWlH qv4OV8fs/oYo9tHcV2vHjb4JbdKLuG6pnNu5+v7xYtsM2tObh91nL+rldVsKk4yBiSaQCvcQbpu 4+Ws3sJG3pd64nY6jBmE7SqRLNltLN1ChYLZVyR6/+wlDrnO3oXJGEXumI5Vx2ZpLuVDP9MMdkE pKnOU X-Developer-Key: i=matttbe@kernel.org; a=openpgp; fpr=E8CB85F76877057A6E27F77AF6B7824F4269A073 Taking the first one on the list doesn't work in some cases, e.g. if the initial subflow is being removed. Pick another one instead of not sending anything. Fixes: 84dfe3677a6f ("mptcp: send out dedicated ADD_ADDR packet") Cc: stable@vger.kernel.org Reviewed-by: Mat Martineau Signed-off-by: Matthieu Baerts (NGI0) --- net/mptcp/pm_netlink.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c index 042cd65d974a..380647f7bc33 100644 --- a/net/mptcp/pm_netlink.c +++ b/net/mptcp/pm_netlink.c @@ -765,9 +765,12 @@ void mptcp_pm_nl_addr_send_ack(struct mptcp_sock *msk) !mptcp_pm_should_rm_signal(msk)) return; - subflow = list_first_entry_or_null(&msk->conn_list, typeof(*subflow), node); - if (subflow) - mptcp_pm_send_ack(msk, subflow, false, false); + mptcp_for_each_subflow(msk, subflow) { + if (__mptcp_subflow_active(subflow)) { + mptcp_pm_send_ack(msk, subflow, false, false); + break; + } + } } int mptcp_pm_nl_mp_prio_send_ack(struct mptcp_sock *msk,