From nobody Wed Sep 17 19:41:37 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 9A4882F4A for ; Wed, 23 Jul 2025 05:16:38 +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=1753247799; cv=none; b=A39YkR2n12+i7dLXmP4s7mk/BX/ZAGcfxuShQwQPqGcCCy+jJbXEzC2tZD+gixLMLoXKxRa+HuN95CAt57pJj4/XvopEMUrvDtFk+lIV9gfRA0Dr5uE07zDwvIdFJmZES8IE1KpLLtvD94xTm3RX8H2Zqpi4knnpbqBBw7pAEEc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1753247799; c=relaxed/simple; bh=HKBdxFHd2Fnzdh7om7SCDsCnykJO+LhNS3bPVDbG4dU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=dR5KcBHLarPNuaEp5UgfZ50NMXAAw5QfbQ+C3ux4FKpy/J44755ZddDefqJUsO1G9yA1eocdbHJzPn0pkb8ttIU9emTW81gvSgTJibAnHLXiElSu/E4engcZ0qIBDv4psE8KqM34GyxzIg9XVUCsYojqgdO790ZtZOsYXOxY0Rg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=PklEBof3; 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="PklEBof3" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 280BBC4CEE7; Wed, 23 Jul 2025 05:16:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1753247798; bh=HKBdxFHd2Fnzdh7om7SCDsCnykJO+LhNS3bPVDbG4dU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=PklEBof3iGvG2I4EQJBCuB9M8qE/pyrO9kzVY49KtOVe7K0DYzve0vTII7knw7ytj 8dhQcpWyCwndkgD0WVOsgnfgIplNGA88wMzAHjVlhUcuyG6rtZHJ6g/EFc2J8VPqjc fydpbYuest7Hxy7suVjZ9a3gvOMyaD8kU32w99hQmuGP+zVzxRTkVWIBOO4APN9yF0 txQt5JBpCHE5cQw0QwQy26UJtuEYti1O2Ivl79Ko3Fz/APnuWK6xAj4fs9j3DVXgRq cYhVG2SGeAfea+revGkKvq9WJEdLPMIbjohvyv7UCBN6/eq3/Z94IfvRRzlY92yKQx NTmm6IcW7Bc5w== From: Geliang Tang To: mptcp@lists.linux.dev Cc: Geliang Tang , Gang Yan Subject: [PATCH mptcp-next 3/7] Add MPTCP client socket creation support Date: Wed, 23 Jul 2025 13:16:15 +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" This patch extends the socket creation API to support Multipath TCP (MPTCP) for client sockets: 1. Added an overloaded 'socket' method that accepts an 'mptcp' parameter to explicitly enable/disable MPTCP 2. Introduced a convenience method 'mptcpSocket()' for creating MPTCP-enabled client sockets using the unspecified protocol family by default The changes maintain consistency with the existing socket API while providing first-class support for MPTCP client sockets. The implementation builds upon the foundation laid in previous patches, utilizing the socket0 infrastructure with MPTCP protocol support. Co-Developed-by: Gang Yan Signed-off-by: Gang Yan Signed-off-by: Geliang Tang --- src/java.base/share/classes/sun/nio/ch/Net.java | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/src/java.base/share/classes/sun/nio/ch/Net.java b/src/java.bas= e/share/classes/sun/nio/ch/Net.java index aa3ed087d2c..cf5dbddc28c 100644 --- a/src/java.base/share/classes/sun/nio/ch/Net.java +++ b/src/java.base/share/classes/sun/nio/ch/Net.java @@ -491,6 +491,16 @@ static FileDescriptor socket(ProtocolFamily family, bo= olean stream) throws IOExc return IOUtil.newFD(socket0(preferIPv6, stream, false, FAST_LOOPBA= CK, false)); } =20 + static FileDescriptor socket(ProtocolFamily family, boolean stream, bo= olean mptcp) throws IOException { + boolean preferIPv6 =3D isIPv6Available() && + (family !=3D StandardProtocolFamily.INET); + return IOUtil.newFD(socket0(preferIPv6, stream, false, FAST_LOOPBA= CK, mptcp)); + } + + static FileDescriptor mptcpSocket() throws IOException { + return socket(UNSPEC, true, true); + } + static FileDescriptor serverSocket() { return serverSocket(UNSPEC); } --=20 2.48.1