GNU Linux-libre 6.9.2-gnu
[releases.git] / include / uapi / linux / smc_diag.h
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         __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_ */