diff options
| author | Jeremy Kerr | 2021-07-29 10:20:41 +0800 |
|---|---|---|
| committer | David S. Miller | 2021-07-29 15:06:49 +0100 |
| commit | 2c8e2e9aec7927b387540a88351b8405ee82b34a (patch) | |
| tree | 19a77b61e08c9fd19e4e654096f6243ea6b5c8fd /include/net | |
| parent | 8f601a1e4f8c84f0a5d249837c567565844fe56e (diff) | |
mctp: Add base packet definitions
Simple packet header format as defined by DMTF DSP0236.
Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net')
| -rw-r--r-- | include/net/mctp.h | 35 |
1 files changed, 35 insertions, 0 deletions
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 */ |