1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2#ifndef _SMC_DIAG_H_
3#define _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 /* _SMC_DIAG_H_ */