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_fallback;
  24         __u8    diag_shutdown;
  25         struct inet_diag_sockid id;
  26
  27         __u32   diag_uid;
  28         __u64   diag_inode;
  29 };
  30
  31 /* Extensions */
  32
  33 enum {
  34         SMC_DIAG_NONE,
  35         SMC_DIAG_CONNINFO,
  36         SMC_DIAG_LGRINFO,
  37         SMC_DIAG_SHUTDOWN,
  38         __SMC_DIAG_MAX,
  39 };
  40
  41 #define SMC_DIAG_MAX (__SMC_DIAG_MAX - 1)
  42
  43 /* SMC_DIAG_CONNINFO */
  44
  45 struct smc_diag_cursor {
  46         __u16   reserved;
  47         __u16   wrap;
  48         __u32   count;
  49 };
  50
  51 struct smc_diag_conninfo {
  52         __u32                   token;          /* unique connection id */
  53         __u32                   sndbuf_size;    /* size of send buffer */
  54         __u32                   rmbe_size;      /* size of RMB element */
  55         __u32                   peer_rmbe_size; /* size of peer RMB element */
  56         /* local RMB element cursors */
  57         struct smc_diag_cursor  rx_prod;        /* received producer cursor */
  58         struct smc_diag_cursor  rx_cons;        /* received consumer cursor */
  59         /* peer RMB element cursors */
  60         struct smc_diag_cursor  tx_prod;        /* sent producer cursor */
  61         struct smc_diag_cursor  tx_cons;        /* sent consumer cursor */
  62         __u8                    rx_prod_flags;  /* received producer flags */
  63         __u8                    rx_conn_state_flags; /* recvd connection flags*/
  64         __u8                    tx_prod_flags;  /* sent producer flags */
  65         __u8                    tx_conn_state_flags; /* sent connection flags*/
  66         /* send buffer cursors */
  67         struct smc_diag_cursor  tx_prep;        /* prepared to be sent cursor */
  68         struct smc_diag_cursor  tx_sent;        /* sent cursor */
  69         struct smc_diag_cursor  tx_fin;         /* confirmed sent cursor */
  70 };
  71
  72 /* SMC_DIAG_LINKINFO */
  73
  74 struct smc_diag_linkinfo {
  75         __u8 link_id;                   /* link identifier */
  76         __u8 ibname[IB_DEVICE_NAME_MAX]; /* name of the RDMA device */
  77         __u8 ibport;                    /* RDMA device port number */
  78         __u8 gid[40];                   /* local GID */
  79         __u8 peer_gid[40];              /* peer GID */
  80 };
  81
  82 struct smc_diag_lgrinfo {
  83         struct smc_diag_linkinfo        lnk[1];
  84         __u8                            role;
  85 };
  86 #endif /* _UAPI_SMC_DIAG_H_ */