From nobody Wed Sep 17 19:40:15 2025 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 6E8DB27450 for ; Tue, 12 Aug 2025 08:17:35 +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=1754986657; cv=none; b=OEdPyybSQz8MEjNcRba/zNtbuuOxj26WCt8EqVy8wZriZZ2aRtVYyYB8qYzGa6feBt1JCW3uCwv2ywuiQewGoJQ4uhFJjIuhzmk6qr0ZAXuga4qRgyX+Ilv3IOxTms7C48it9/hWMFTfqU/RlHCe88457d0F0oymrv4OJhz54BU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754986657; c=relaxed/simple; bh=HKyAP33UKW1qVWowU2/FdyTrO2t901A4bUW/9Czk6ZA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=YXybghbBEBZeJ3CmI3CUswaGZtqwjPQhLTeJa1QqCWPRXSJf0zrXhsRHQtenD5ODlf1rzZKTEIXbMaX9Tt7l/VKSfnxTPQ7PqesSpfzlwVXtUv8iRQpXiqdVJMEaHyODB/rHTMxYM4uOtJemk6L+lXKxyyeYk08YpMxXSbIONSg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=vFUBkbdm; 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="vFUBkbdm" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B6A84C4CEF4; Tue, 12 Aug 2025 08:17:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1754986655; bh=HKyAP33UKW1qVWowU2/FdyTrO2t901A4bUW/9Czk6ZA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=vFUBkbdmDvwV0i3vUyL7+LIeOszLatBRnvWO8uDH7pTqtSUA5jj3oMBNN7AHzW1l7 i8rzQ0repHPvnHhW4Sfl7SnDPMkMVza0NB/LwWMp/CSDKYiCuFCAQD7OARYC+P387k 76iFH9XNeXp2fT6Pl3xrCmPHBTjr4kpp0PpqCOszI159YIiLaIWDD/OL1RsTo3mcqa NAQCrlm+6fGM4jnfXTG8f/P6XCsCxq1fcOOHHJJFqUd2RdBO9ajq1sOIGspcMZ55EF Ayh2r+QtpkmDbFgWleAEhhsC0J6qnCN5SPw/1yAh4l3Bc4WnI+xI4kzzIg0eelxjr2 tk/F8nEGqRbww== From: Geliang Tang To: mptcp@lists.linux.dev Cc: Geliang Tang Subject: [PATCH mptcp-next 3/6] mptcp: refactor IP socket option handling for first subflow Date: Tue, 12 Aug 2025 16:17:18 +0800 Message-ID: X-Mailer: git-send-email 2.48.1 In-Reply-To: References: Precedence: bulk X-Mailing-List: mptcp@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Geliang Tang Consolidate IP socket option logic with mptcp_setsockopt_first_sf_only() - the common setsockopt handler for first subflow. This function applies options (IP_TRANSPARENT, IP_BIND_ADDRESS_NO_PORT, IP_LOCAL_PORT_RANGE) to the first subflow and synchronizes values to the MPTCP socket. Improves code organization for future socket option implementations. Signed-off-by: Geliang Tang --- net/mptcp/sockopt.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/net/mptcp/sockopt.c b/net/mptcp/sockopt.c index 8017cbad0597..1ab3dbe5124e 100644 --- a/net/mptcp/sockopt.c +++ b/net/mptcp/sockopt.c @@ -703,8 +703,8 @@ static int __mptcp_setsockopt_sol_tcp_nodelay(struct mp= tcp_sock *msk, int val) return 0; } =20 -static int mptcp_setsockopt_sol_ip_set(struct mptcp_sock *msk, int optname, - sockptr_t optval, unsigned int optlen) +static int mptcp_setsockopt_sol_ip_first_sf_only(struct mptcp_sock *msk, i= nt optname, + sockptr_t optval, unsigned int optlen) { struct sock *sk =3D (struct sock *)msk; struct sock *ssk; @@ -785,7 +785,7 @@ static int mptcp_setsockopt_v4(struct mptcp_sock *msk, = int optname, case IP_TRANSPARENT: case IP_BIND_ADDRESS_NO_PORT: case IP_LOCAL_PORT_RANGE: - return mptcp_setsockopt_sol_ip_set(msk, optname, optval, optlen); + return mptcp_setsockopt_first_sf_only(msk, SOL_IP, optname, optval, optl= en); case IP_TOS: return mptcp_setsockopt_v4_set_tos(msk, optname, optval, optlen); } @@ -826,6 +826,9 @@ static int mptcp_setsockopt_first_sf_only(struct mptcp_= sock *msk, int level, case SOL_SOCKET: return mptcp_setsockopt_sol_socket_first_sf_only(msk, optname, optval, optlen); + case SOL_IP: + return mptcp_setsockopt_sol_ip_first_sf_only(msk, optname, + optval, optlen); } =20 return -EOPNOTSUPP; --=20 2.48.1