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         __u8            diag_mode;
  24         __u8            diag_shutdown;
  25         struct inet_diag_sockid id;
  26
  27         __u32           diag_uid;
  28         __aligned_u64   diag_inode;
  29 };
  30
  31 /* Mode of a connection */
  32 enum {
  33         SMC_DIAG_MODE_SMCR,
  34         SMC_DIAG_MODE_FALLBACK_TCP,
  35         SMC_DIAG_MODE_SMCD,
  36 };
  37
  38 /* Extensions */
  39
  40 enum {
  41         SMC_DIAG_NONE,
  42         SMC_DIAG_CONNINFO,
  43         SMC_DIAG_LGRINFO,
  44         SMC_DIAG_SHUTDOWN,
  45         SMC_DIAG_DMBINFO,
  46         SMC_DIAG_FALLBACK,
  47         __SMC_DIAG_MAX,
  48 };
  49
  50 #define SMC_DIAG_MAX (__SMC_DIAG_MAX - 1)
  51
  52 /* SMC_DIAG_CONNINFO */
  53
  54 struct smc_diag_cursor {
  55         __u16   reserved;
  56         __u16   wrap;
  57         __u32   count;
  58 };
  59
  60 struct smc_diag_conninfo {
  61         __u32                   token;          /* unique connection id */
  62         __u32                   sndbuf_size;    /* size of send buffer */
  63         __u32                   rmbe_size;      /* size of RMB element */
  64         __u32                   peer_rmbe_size; /* size of peer RMB element */
  65         /* local RMB element cursors */
  66         struct smc_diag_cursor  rx_prod;        /* received producer cursor */
  67         struct smc_diag_cursor  rx_cons;        /* received consumer cursor */
  68         /* peer RMB element cursors */
  69         struct smc_diag_cursor  tx_prod;        /* sent producer cursor */
  70         struct smc_diag_cursor  tx_cons;        /* sent consumer cursor */
  71         __u8                    rx_prod_flags;  /* received producer flags */
  72         __u8                    rx_conn_state_flags; /* recvd connection flags*/
  73         __u8                    tx_prod_flags;  /* sent producer flags */
  74         __u8                    tx_conn_state_flags; /* sent connection flags*/
  75         /* send buffer cursors */
  76         struct smc_diag_cursor  tx_prep;        /* prepared to be sent cursor */
  77         struct smc_diag_cursor  tx_sent;        /* sent cursor */
  78         struct smc_diag_cursor  tx_fin;         /* confirmed sent cursor */
  79 };
  80
  81 /* SMC_DIAG_LINKINFO */
  82
  83 struct smc_diag_linkinfo {
  84         __u8 link_id;                   /* link identifier */
  85         __u8 ibname[IB_DEVICE_NAME_MAX]; /* name of the RDMA device */
  86         __u8 ibport;                    /* RDMA device port number */
  87         __u8 gid[40];                   /* local GID */
  88         __u8 peer_gid[40];              /* peer GID */
  89 };
  90
  91 struct smc_diag_lgrinfo {
  92         struct smc_diag_linkinfo        lnk[1];
  93         __u8                            role;
  94 };
  95
  96 struct smc_diag_fallback {
  97         __u32 reason;
  98         __u32 peer_diagnosis;
  99 };
 100
 101 struct smcd_diag_dmbinfo {              /* SMC-D Socket internals */
 102         __u32           linkid;         /* Link identifier */
 103         __aligned_u64   peer_gid;       /* Peer GID */
 104         __aligned_u64   my_gid;         /* My GID */
 105         __aligned_u64   token;          /* Token of DMB */
 106         __aligned_u64   peer_token;     /* Token of remote DMBE */
 107 };
 108
 109 #endif /* _UAPI_SMC_DIAG_H_ */