1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2#ifndef _UAPI_SMC_DIAG_H_
3#define _UAPI_SMC_DIAG_H_
4
5#include <linux/types.h>
6#include <linux/inet_diag.h>
7#include <rdma/ib_user_verbs.h>
8
9/* Request structure */
10struct smc_diag_req {
11	__u8	diag_family;
12	__u8	pad[2];
13	__u8	diag_ext;		/* Query extended information */
14	struct inet_diag_sockid	id;
15};
16
17/* Base info structure. It contains socket identity (addrs/ports/cookie) based
18 * on the internal clcsock, and more SMC-related socket data
19 */
20struct smc_diag_msg {
21	__u8		diag_family;
22	__u8		diag_state;
23	union {
24		__u8	diag_mode;
25		__u8	diag_fallback; /* the old name of the field */
26	};
27	__u8		diag_shutdown;
28	struct inet_diag_sockid id;
29
30	__u32		diag_uid;
31	__aligned_u64	diag_inode;
32};
33
34/* Mode of a connection */
35enum {
36	SMC_DIAG_MODE_SMCR,
37	SMC_DIAG_MODE_FALLBACK_TCP,
38	SMC_DIAG_MODE_SMCD,
39};
40
41/* Extensions */
42
43enum {
44	SMC_DIAG_NONE,
45	SMC_DIAG_CONNINFO,
46	SMC_DIAG_LGRINFO,
47	SMC_DIAG_SHUTDOWN,
48	SMC_DIAG_DMBINFO,
49	SMC_DIAG_FALLBACK,
50	__SMC_DIAG_MAX,
51};
52
53#define SMC_DIAG_MAX (__SMC_DIAG_MAX - 1)
54
55/* SMC_DIAG_CONNINFO */
56
57struct smc_diag_cursor {
58	__u16	reserved;
59	__u16	wrap;
60	__u32	count;
61};
62
63struct smc_diag_conninfo {
64	__u32			token;		/* unique connection id */
65	__u32			sndbuf_size;	/* size of send buffer */
66	__u32			rmbe_size;	/* size of RMB element */
67	__u32			peer_rmbe_size;	/* size of peer RMB element */
68	/* local RMB element cursors */
69	struct smc_diag_cursor	rx_prod;	/* received producer cursor */
70	struct smc_diag_cursor	rx_cons;	/* received consumer cursor */
71	/* peer RMB element cursors */
72	struct smc_diag_cursor	tx_prod;	/* sent producer cursor */
73	struct smc_diag_cursor	tx_cons;	/* sent consumer cursor */
74	__u8			rx_prod_flags;	/* received producer flags */
75	__u8			rx_conn_state_flags; /* recvd connection flags*/
76	__u8			tx_prod_flags;	/* sent producer flags */
77	__u8			tx_conn_state_flags; /* sent connection flags*/
78	/* send buffer cursors */
79	struct smc_diag_cursor	tx_prep;	/* prepared to be sent cursor */
80	struct smc_diag_cursor	tx_sent;	/* sent cursor */
81	struct smc_diag_cursor	tx_fin;		/* confirmed sent cursor */
82};
83
84/* SMC_DIAG_LINKINFO */
85
86struct smc_diag_linkinfo {
87	__u8 link_id;			/* link identifier */
88	__u8 ibname[IB_DEVICE_NAME_MAX]; /* name of the RDMA device */
89	__u8 ibport;			/* RDMA device port number */
90	__u8 gid[40];			/* local GID */
91	__u8 peer_gid[40];		/* peer GID */
92};
93
94struct smc_diag_lgrinfo {
95	struct smc_diag_linkinfo	lnk[1];
96	__u8				role;
97};
98
99struct smc_diag_fallback {
100	__u32 reason;
101	__u32 peer_diagnosis;
102};
103
104struct smcd_diag_dmbinfo {		/* SMC-D Socket internals */
105	__u32		linkid;		/* Link identifier */
106	__aligned_u64	peer_gid;	/* Peer GID */
107	__aligned_u64	my_gid;		/* My GID */
108	__aligned_u64	token;		/* Token of DMB */
109	__aligned_u64	peer_token;	/* Token of remote DMBE */
110	__aligned_u64	peer_gid_ext;	/* Peer GID (extended part) */
111	__aligned_u64	my_gid_ext;	/* My GID (extended part) */
112};
113
114#endif /* _UAPI_SMC_DIAG_H_ */
115