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 */
10 struct 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 */
20 struct 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 */
35 enum {
36 SMC_DIAG_MODE_SMCR,
37 SMC_DIAG_MODE_FALLBACK_TCP,
38 SMC_DIAG_MODE_SMCD,
39 };
40
41 /* Extensions */
42
43 enum {
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
57 struct smc_diag_cursor {
58 __u16 reserved;
59 __u16 wrap;
60 __u32 count;
61 };
62
63 struct 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
86 struct 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
94 struct smc_diag_lgrinfo {
95 struct smc_diag_linkinfo lnk[1];
96 __u8 role;
97 };
98
99 struct smc_diag_fallback {
100 __u32 reason;
101 __u32 peer_diagnosis;
102 };
103
104 struct 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 };
111
112 #endif /* _UAPI_SMC_DIAG_H_ */