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_ */