Netdev Archive on lore.kernel.org
help / color / mirror / Atom feed
From: Jeremy Kerr <jk@codeconstruct.com.au>
To: netdev@vger.kernel.org
Cc: Matt Johnston <matt@codeconstruct.com.au>,
	Andrew Jeffery <andrew@aj.id.au>
Subject: [PATCH net-next v3 03/16] mctp: Add base packet definitions
Date: Fri, 23 Jul 2021 16:29:19 +0800	[thread overview]
Message-ID: <20210723082932.3570396-4-jk@codeconstruct.com.au> (raw)
In-Reply-To: <20210723082932.3570396-1-jk@codeconstruct.com.au>

Simple packet header format as defined by DMTF DSP0236.

Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au>

---
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 aa2a51ff3aa4..72dcbf5f09b0 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -11035,6 +11035,7 @@ M:	Jeremy Kerr <jk@codeconstruct.com.au>
 M:	Matt Johnston <matt@codeconstruct.com.au>
 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 <linux/bits.h>
+
+/* 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 */
-- 
2.30.2


  parent reply	other threads:[~2021-07-23  8:29 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-23  8:29 [PATCH net-next v3 00/16] Add Management Component Transport Protocol support Jeremy Kerr
2021-07-23  8:29 ` [PATCH net-next v3 01/16] mctp: Add MCTP base Jeremy Kerr
2021-08-12  9:45   ` Geert Uytterhoeven
2021-08-12 11:15     ` Jeremy Kerr
2021-08-12 11:32       ` Geert Uytterhoeven
2021-10-03 21:08       ` Steven Rostedt
2021-07-23  8:29 ` [PATCH net-next v3 02/16] mctp: Add base socket/protocol definitions Jeremy Kerr
2021-07-23  8:29 ` Jeremy Kerr [this message]
2021-07-23  8:29 ` [PATCH net-next v3 04/16] mctp: Add sockaddr_mctp to uapi Jeremy Kerr
2021-07-23  8:29 ` [PATCH net-next v3 05/16] mctp: Add initial driver infrastructure Jeremy Kerr
2021-07-23  8:29 ` [PATCH net-next v3 06/16] mctp: Add device handling and netlink interface Jeremy Kerr
2021-07-23  8:29 ` [PATCH net-next v3 07/16] mctp: Add initial routing framework Jeremy Kerr
2021-07-23  8:29 ` [PATCH net-next v3 08/16] mctp: Add netlink route management Jeremy Kerr
2021-07-23  8:29 ` [PATCH net-next v3 09/16] mctp: Add neighbour implementation Jeremy Kerr
2021-07-23  8:29 ` [PATCH net-next v3 10/16] mctp: Add neighbour netlink interface Jeremy Kerr
2021-07-23  8:29 ` [PATCH net-next v3 11/16] mctp: Populate socket implementation Jeremy Kerr
2021-07-23  8:29 ` [PATCH net-next v3 12/16] mctp: Implement message fragmentation & reassembly Jeremy Kerr
2021-07-23  8:29 ` [PATCH net-next v3 13/16] mctp: Add dest neighbour lladdr to route output Jeremy Kerr
2021-07-23  8:29 ` [PATCH net-next v3 14/16] mctp: Allow per-netns default networks Jeremy Kerr
2021-07-23  8:29 ` [PATCH net-next v3 15/16] mctp: Allow MCTP on tun devices Jeremy Kerr
2021-07-23  8:29 ` [PATCH net-next v3 16/16] mctp: Add MCTP overview document Jeremy Kerr

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20210723082932.3570396-4-jk@codeconstruct.com.au \
    --to=jk@codeconstruct.com.au \
    --cc=andrew@aj.id.au \
    --cc=matt@codeconstruct.com.au \
    --cc=netdev@vger.kernel.org \
    --subject='Re: [PATCH net-next v3 03/16] mctp: Add base packet definitions' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).