LXR linux/include/uapi/linux/smc

   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 */
  10struct 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 */
  20struct 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
  33enum {
  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
  45struct smc_diag_cursor {
  46        __u16   reserved;
  47        __u16   wrap;
  48        __u32   count;
  49};
  50
  51struct 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
  74struct 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
  82struct smc_diag_lgrinfo {
  83        struct smc_diag_linkinfo        lnk[1];
  84        __u8                            role;
  85};
  86#endif /* _UAPI_SMC_DIAG_H_ */
  87