From patchwork Tue Jul 13 06:20:10 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeremy Kerr X-Patchwork-Id: 12372927 X-Patchwork-Delegate: kuba@kernel.org Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6A9E9C07E96 for ; Tue, 13 Jul 2021 06:27:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5631A61183 for ; Tue, 13 Jul 2021 06:27:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233793AbhGMGaj (ORCPT ); Tue, 13 Jul 2021 02:30:39 -0400 Received: from pi.codeconstruct.com.au ([203.29.241.158]:59280 "EHLO codeconstruct.com.au" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233934AbhGMGaQ (ORCPT ); Tue, 13 Jul 2021 02:30:16 -0400 Received: by codeconstruct.com.au (Postfix, from userid 10000) id C7AF02144D; Tue, 13 Jul 2021 14:21:35 +0800 (AWST) From: Jeremy Kerr To: netdev@vger.kernel.org Cc: Matt Johnston , Andrew Jeffery Subject: [PATCH RFC net-next v2 03/16] mctp: Add base packet definitions Date: Tue, 13 Jul 2021 14:20:10 +0800 Message-Id: <20210713062023.3286895-4-jk@codeconstruct.com.au> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210713062023.3286895-1-jk@codeconstruct.com.au> References: <20210713062023.3286895-1-jk@codeconstruct.com.au> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org X-Patchwork-State: RFC Simple packet header format as defined by DMTF DSP0236. Signed-off-by: Jeremy Kerr --- v2: - Controller -> component --- MAINTAINERS | 1 + include/net/mctp.h | 35 +++++++++++++++++++++++++++++++++++ 2 files changed, 36 insertions(+) create mode 100644 include/net/mctp.h diff --git a/MAINTAINERS b/MAINTAINERS index 8116fd2a0789..8eb957c848dc 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -10874,6 +10874,7 @@ M: Jeremy Kerr M: Matt Johnston L: netdev@vger.kernel.org S: Maintained +F: include/net/mctp.h F: net/mctp/ MAN-PAGES: MANUAL PAGES FOR LINUX -- Sections 2, 3, 4, 5, and 7 diff --git a/include/net/mctp.h b/include/net/mctp.h new file mode 100644 index 000000000000..4c01e083be45 --- /dev/null +++ b/include/net/mctp.h @@ -0,0 +1,35 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Management Component Transport Protocol (MCTP) + * + * Copyright (c) 2021 Code Construct + * Copyright (c) 2021 Google + */ + +#ifndef __NET_MCTP_H +#define __NET_MCTP_H + +#include + +/* MCTP packet definitions */ +struct mctp_hdr { + u8 ver; + u8 dest; + u8 src; + u8 flags_seq_tag; +}; + +#define MCTP_VER_MIN 1 +#define MCTP_VER_MAX 1 + +/* Definitions for flags_seq_tag field */ +#define MCTP_HDR_FLAG_SOM BIT(7) +#define MCTP_HDR_FLAG_EOM BIT(6) +#define MCTP_HDR_FLAG_TO BIT(3) +#define MCTP_HDR_FLAGS GENMASK(5, 3) +#define MCTP_HDR_SEQ_SHIFT 4 +#define MCTP_HDR_SEQ_MASK GENMASK(1, 0) +#define MCTP_HDR_TAG_SHIFT 0 +#define MCTP_HDR_TAG_MASK GENMASK(2, 0) + +#endif /* __NET_MCTP_H */