From patchwork Wed Dec 9 23:51:20 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mat Martineau X-Patchwork-Id: 1413740 Return-Path: X-Original-To: patchwork-incoming-netdev@ozlabs.org Delivered-To: patchwork-incoming-netdev@ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4Crv8Y4Ntbz9sW8 for ; Thu, 10 Dec 2020 10:56:29 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728349AbgLIX4Z (ORCPT ); Wed, 9 Dec 2020 18:56:25 -0500 Received: from mga06.intel.com ([134.134.136.31]:19330 "EHLO mga06.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725965AbgLIX4E (ORCPT ); Wed, 9 Dec 2020 18:56:04 -0500 IronPort-SDR: 4JXBTBgpY3KxP7U2vKOjkbq8Ickc23cSHeLxBHahrW4ZfTGzfmG10k+9SLHzD5mcFvQY3jfgmH smAj8mWdRbJw== X-IronPort-AV: E=McAfee;i="6000,8403,9830"; a="235763090" X-IronPort-AV: E=Sophos;i="5.78,407,1599548400"; d="scan'208";a="235763090" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Dec 2020 15:51:38 -0800 IronPort-SDR: kADvpS/dywXNwoPsW28sVZR/hx0YeArH8D8xhexz71sv2pW7xC2wudlulqIdbQYKpsYu9lXAAt b1y+2Pb0X5lg== X-IronPort-AV: E=Sophos;i="5.78,407,1599548400"; d="scan'208";a="318582183" Received: from mjmartin-nuc02.amr.corp.intel.com ([10.254.111.12]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 09 Dec 2020 15:51:38 -0800 From: Mat Martineau To: netdev@vger.kernel.org Cc: Geliang Tang , davem@davemloft.net, kuba@kernel.org, mptcp@lists.01.org, Mat Martineau Subject: [PATCH net-next 03/11] mptcp: add port support for ADD_ADDR suboption writing Date: Wed, 9 Dec 2020 15:51:20 -0800 Message-Id: <20201209235128.175473-4-mathew.j.martineau@linux.intel.com> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201209235128.175473-1-mathew.j.martineau@linux.intel.com> References: <20201209235128.175473-1-mathew.j.martineau@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Geliang Tang In rfc8684, the length of ADD_ADDR suboption with IPv4 address and port is 18 octets, but mptcp_write_options is 32-bit aligned, so we need to pad it to 20 octets. All the other port related option lengths need to be added up 2 octets similarly. This patch added a new field 'port' in mptcp_out_options. When this field is set with a port number, we need to add up 4 octets for the ADD_ADDR suboption, and put the port number into the suboption. Signed-off-by: Geliang Tang Signed-off-by: Mat Martineau --- include/net/mptcp.h | 1 + net/mptcp/options.c | 30 +++++++++++++++++++++++++++--- net/mptcp/protocol.h | 10 +++++----- 3 files changed, 33 insertions(+), 8 deletions(-) diff --git a/include/net/mptcp.h b/include/net/mptcp.h index b6cf07143a8a..5694370be3d4 100644 --- a/include/net/mptcp.h +++ b/include/net/mptcp.h @@ -46,6 +46,7 @@ struct mptcp_out_options { #endif }; u8 addr_id; + u16 port; u64 ahmac; u8 rm_id; u8 join_id; diff --git a/net/mptcp/options.c b/net/mptcp/options.c index 639d47e6e2d0..51f560a26890 100644 --- a/net/mptcp/options.c +++ b/net/mptcp/options.c @@ -1088,6 +1088,9 @@ void mptcp_write_options(__be32 *ptr, const struct tcp_sock *tp, len = TCPOLEN_MPTCP_ADD_ADDR6_BASE; #endif + if (opts->port) + len += TCPOLEN_MPTCP_PORT_LEN; + if (opts->ahmac) { len += sizeof(opts->ahmac); echo = 0; @@ -1105,9 +1108,30 @@ void mptcp_write_options(__be32 *ptr, const struct tcp_sock *tp, ptr += 4; } #endif - if (opts->ahmac) { - put_unaligned_be64(opts->ahmac, ptr); - ptr += 2; + + if (!opts->port) { + if (opts->ahmac) { + put_unaligned_be64(opts->ahmac, ptr); + ptr += 2; + } + } else { + if (opts->ahmac) { + u8 *bptr = (u8 *)ptr; + + put_unaligned_be16(opts->port, bptr); + bptr += 2; + put_unaligned_be64(opts->ahmac, bptr); + bptr += 8; + put_unaligned_be16(TCPOPT_NOP << 8 | + TCPOPT_NOP, bptr); + + ptr += 3; + } else { + put_unaligned_be32(opts->port << 16 | + TCPOPT_NOP << 8 | + TCPOPT_NOP, ptr); + ptr += 1; + } } } diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h index 4db8c905b0db..987046d9d1d4 100644 --- a/net/mptcp/protocol.h +++ b/net/mptcp/protocol.h @@ -49,14 +49,14 @@ #define TCPOLEN_MPTCP_DSS_MAP64 14 #define TCPOLEN_MPTCP_DSS_CHECKSUM 2 #define TCPOLEN_MPTCP_ADD_ADDR 16 -#define TCPOLEN_MPTCP_ADD_ADDR_PORT 18 +#define TCPOLEN_MPTCP_ADD_ADDR_PORT 20 #define TCPOLEN_MPTCP_ADD_ADDR_BASE 8 -#define TCPOLEN_MPTCP_ADD_ADDR_BASE_PORT 10 +#define TCPOLEN_MPTCP_ADD_ADDR_BASE_PORT 12 #define TCPOLEN_MPTCP_ADD_ADDR6 28 -#define TCPOLEN_MPTCP_ADD_ADDR6_PORT 30 +#define TCPOLEN_MPTCP_ADD_ADDR6_PORT 32 #define TCPOLEN_MPTCP_ADD_ADDR6_BASE 20 -#define TCPOLEN_MPTCP_ADD_ADDR6_BASE_PORT 22 -#define TCPOLEN_MPTCP_PORT_LEN 2 +#define TCPOLEN_MPTCP_ADD_ADDR6_BASE_PORT 24 +#define TCPOLEN_MPTCP_PORT_LEN 4 #define TCPOLEN_MPTCP_RM_ADDR_BASE 4 /* MPTCP MP_JOIN flags */