From patchwork Tue Jun 16 06:47:36 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Geliang Tang X-Patchwork-Id: 1310033 X-Patchwork-Delegate: davem@davemloft.net 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=pass (p=none dis=none) header.from=gmail.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20161025 header.b=ccOxejJJ; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 49mJm256Wgz9sSf for ; Tue, 16 Jun 2020 16:52:18 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726858AbgFPGwO (ORCPT ); Tue, 16 Jun 2020 02:52:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48078 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726064AbgFPGwO (ORCPT ); Tue, 16 Jun 2020 02:52:14 -0400 Received: from mail-pg1-x542.google.com (mail-pg1-x542.google.com [IPv6:2607:f8b0:4864:20::542]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 63BB0C05BD43; Mon, 15 Jun 2020 23:52:14 -0700 (PDT) Received: by mail-pg1-x542.google.com with SMTP id r18so8781723pgk.11; Mon, 15 Jun 2020 23:52:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :in-reply-to:references; bh=TUMaHipN2b46YYtI2ONw0ZTI17Rwhgm3i19UCKbwehw=; b=ccOxejJJv9IDLGnzsv5M8N5OgBzu9iEhKZoxuMUUrC6EtFKJXyme/XLo1Nmw4on6mQ +DAo1I59WfvZe16h8b9fZ+uOKuI9k5DqeFlpqxGOvvo3U1nt9Ogidr1Y2GVF3fSm4XPs ZAY89uzqPO8CLQ+Yn4rZw6IrFZYs0bhejDAFYDKXGysHRFWPcT+Jmqf2nBbUVqP3twRE BslgjR8kuzF2cmYy0En7Bh2czYJyJiOSGxs4Agw9bgAnrhUn/AYjpdkJjQVKaSZ4r581 tvAK1Zwjdd1cCV7U5Au8oB7LMpSsa5+lc+ikfY0FSxqPQkXpy0HECHGnDtYx9qeTnZxP wgVA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:in-reply-to:references; bh=TUMaHipN2b46YYtI2ONw0ZTI17Rwhgm3i19UCKbwehw=; b=DP6IuKCXdqFfbQGNmt/65t+0K3ohBwBFQzaosyfr/qONAbSjKQeb3tz0yel7CAjn+v zcakqOVg69u8TFJfKwJqCR5YUj1LaMspt+iS1eXIxKZbW6k886sLY90IOr5oXLlZYVCD 0zzySSMCLZmYyOyuWmTPI8IznDRdiRB1NRdkwM9xXnERke5IVKp4lMcEjebEgThMLbXP S2IeRDHFcxjLdeD2tz3Wem7WNVeG2w5sygZ9QzSIBUTOEhUmPHKmoYbIbp6vCqUkllpL 48QcpFb/c6vBnmdgjWJlaxo73GrnnJVNvWmGEtEjG7AgcaP1x47eh48cWkq/lHe0/pzu Y0NQ== X-Gm-Message-State: AOAM532ndabgUPw1pmdRQ+rBntb/EfRhXwksv9gV27GhV/CbBvYUqW/W 4u5S4PmyIoSatPNaHN8qDiV95Li+ECFJdg== X-Google-Smtp-Source: ABdhPJxu4sz+eH9d/XahKEH+uVUbo1CljA4RgYFyEWkTKmD4z6rW0v/jt6qGmmkifqfGnab73a42aA== X-Received: by 2002:aa7:859a:: with SMTP id w26mr820123pfn.10.1592290333937; Mon, 15 Jun 2020 23:52:13 -0700 (PDT) Received: from localhost ([43.224.245.180]) by smtp.gmail.com with ESMTPSA id u24sm164378pga.47.2020.06.15.23.52.12 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Mon, 15 Jun 2020 23:52:13 -0700 (PDT) From: Geliang Tang To: Mat Martineau , Matthieu Baerts , "David S. Miller" , Jakub Kicinski Cc: Geliang Tang , netdev@vger.kernel.org, mptcp@lists.01.org, linux-kernel@vger.kernel.org Subject: [PATCH net-next 1/3] mptcp: add MP_PRIO suboption handling Date: Tue, 16 Jun 2020 14:47:36 +0800 Message-Id: X-Mailer: git-send-email 2.17.1 In-Reply-To: References: In-Reply-To: References: Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Add handling for sending and receiving MP_PRIO suboption. Signed-off-by: Geliang Tang --- net/mptcp/options.c | 14 ++++++++++++++ net/mptcp/protocol.h | 5 +++++ 2 files changed, 19 insertions(+) diff --git a/net/mptcp/options.c b/net/mptcp/options.c index 490b92534afc..cc3039f0ac43 100644 --- a/net/mptcp/options.c +++ b/net/mptcp/options.c @@ -280,6 +280,14 @@ static void mptcp_parse_option(const struct sk_buff *skb, pr_debug("RM_ADDR: id=%d", mp_opt->rm_id); break; + case MPTCPOPT_MP_PRIO: + if (opsize != TCPOLEN_MPTCP_PRIO) + break; + + mp_opt->backup = (*ptr++) & MPTCP_PRIO_BACKUP; + pr_debug("MP_PRIO: backup=%d", mp_opt->backup); + break; + default: break; } @@ -961,6 +969,12 @@ void mptcp_write_options(__be32 *ptr, struct mptcp_out_options *opts) 0, opts->rm_id); } + if (OPTION_MPTCP_PRIO & opts->suboptions) { + *ptr++ = mptcp_option(MPTCPOPT_MP_PRIO, + TCPOLEN_MPTCP_PRIO, + opts->backup, 0); + } + if (OPTION_MPTCP_MPJ_SYN & opts->suboptions) { *ptr++ = mptcp_option(MPTCPOPT_MP_JOIN, TCPOLEN_MPTCP_MPJ_SYN, diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h index db56535dfc29..623c9a1c4343 100644 --- a/net/mptcp/protocol.h +++ b/net/mptcp/protocol.h @@ -23,6 +23,7 @@ #define OPTION_MPTCP_ADD_ADDR BIT(6) #define OPTION_MPTCP_ADD_ADDR6 BIT(7) #define OPTION_MPTCP_RM_ADDR BIT(8) +#define OPTION_MPTCP_PRIO BIT(9) /* MPTCP option subtypes */ #define MPTCPOPT_MP_CAPABLE 0 @@ -58,6 +59,7 @@ #define TCPOLEN_MPTCP_ADD_ADDR6_BASE_PORT 22 #define TCPOLEN_MPTCP_PORT_LEN 2 #define TCPOLEN_MPTCP_RM_ADDR_BASE 4 +#define TCPOLEN_MPTCP_PRIO 3 /* MPTCP MP_JOIN flags */ #define MPTCPOPT_BACKUP BIT(0) @@ -84,6 +86,9 @@ #define MPTCP_ADDR_IPVERSION_4 4 #define MPTCP_ADDR_IPVERSION_6 6 +/* MPTCP MP_PRIO flags */ +#define MPTCP_PRIO_BACKUP BIT(0) + /* MPTCP socket flags */ #define MPTCP_DATA_READY 0 #define MPTCP_SEND_SPACE 1