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        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 */
  35enum {
  36        SMC_DIAG_MODE_SMCR,
  37        SMC_DIAG_MODE_FALLBACK_TCP,
  38        SMC_DIAG_MODE_SMCD,
  39};
  40
  41/* Extensions */
  42
  43enum {
  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
  57struct smc_diag_cursor {
  58        __u16   reserved;
  59        __u16   wrap;
  60        __u32   count;
  61};
  62
  63struct 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
  86struct 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
  94struct smc_diag_lgrinfo {
  95        struct smc_diag_linkinfo        lnk[1];
  96        __u8                            role;
  97};
  98
  99struct smc_diag_fallback {
 100        __u32 reason;
 101        __u32 peer_diagnosis;
 102};
 103
 104struct 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};
 111
 112#endif /* _UAPI_SMC_DIAG_H_ */
 113