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 385FD362139; Wed, 20 May 2026 18:50:38 +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=1779303041; cv=none; b=kPOCf3b5tNHn63gtRUi3kBNxKCe/fPESvYhGFFJ86wDGPyNKk3IOgH7PEXEcFn21JcJLelAAc/n69lqcCf60+d1zmD3TFP/j9AHLrD5VjrNc7d22pCPJzT+W+Yc4PGyQKDegzz9UTsWNmkSBNYCtT3Tvfc+wPDD8CI067G+6y9c= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779303041; c=relaxed/simple; bh=b3etokwvWpnW51a+b0hBjogd0hUML214bHn2ScoIN8Q=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=W8jPGk7w6QHZgloFD1ZmDcaM81JtFOkPPtUoNUx5nucfoYdnEC6SvBrpMIpft4hhWdx+qiUrWZcciZLQWXNgUiqNSrqlZi/Jkg1KQWT580cthGIuUAfNyZaBVHs68eYMQxbdLp1FCojqO6BDIK1KFWzn1DWAT+jmCueZolxQQHQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=mRE3eMOX; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="mRE3eMOX" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 921871F000E9; Wed, 20 May 2026 18:50:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1779303038; bh=4dhpDWBIB5OhaiaMUohly/9HaqPufG5imkPMj3wIszU=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=mRE3eMOXkQ4WQj4G5aCFH21+WWbNwo8WxM2dH8dIOqr7N2Zj2WL14kT7oUVKOPzru EK2uQfr9HuHmUVZ24LlOn47JqyFk2Hw1tlVEgnyI/o2VljJt1EBJzk7SUEhOLWAi2w oZSoR3j/XoU2EH/2O0fKtMfycfu5/Ynd6hReal3g= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Mat Martineau , "Matthieu Baerts (NGI0)" , Jakub Kicinski , Sasha Levin Subject: [PATCH 6.6 496/508] mptcp: pm: prio: skip closed subflows Date: Wed, 20 May 2026 18:25:19 +0200 Message-ID: <20260520162109.344769213@linuxfoundation.org> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260520162058.573354582@linuxfoundation.org> References: <20260520162058.573354582@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: "Matthieu Baerts (NGI0)" [ Upstream commit 166b78344031bf7ac9f55cb5282776cfd85f220e ] When sending an MP_PRIO, closed subflows need to be skipped. This fixes the case where the initial subflow got closed, re-opened later, then an MP_PRIO is needed for the same local address. Note that explicit MP_PRIO cannot be sent during the 3WHS, so it is fine to use __mptcp_subflow_active(). Fixes: 067065422fcd ("mptcp: add the outgoing MP_PRIO support") Cc: stable@vger.kernel.org Fixes: b29fcfb54cd7 ("mptcp: full disconnect implementation") Reviewed-by: Mat Martineau Signed-off-by: Matthieu Baerts (NGI0) Link: https://patch.msgid.link/20260505-net-mptcp-pm-fixes-7-1-rc3-v1-9-fca8091060a4@kernel.org Signed-off-by: Jakub Kicinski [ applied to renamed function `mptcp_pm_nl_mp_prio_send_ack()` in `pm_netlink.c` ] Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- net/mptcp/pm_netlink.c | 3 +++ 1 file changed, 3 insertions(+) --- a/net/mptcp/pm_netlink.c +++ b/net/mptcp/pm_netlink.c @@ -923,6 +923,9 @@ int mptcp_pm_nl_mp_prio_send_ack(struct struct sock *ssk = mptcp_subflow_tcp_sock(subflow); struct mptcp_addr_info local, remote; + if (!__mptcp_subflow_active(subflow)) + continue; + mptcp_local_address((struct sock_common *)ssk, &local); if (!mptcp_addresses_equal(&local, addr, addr->port)) continue;