LXR qemu/hw/rdma/rdma_rm

   1/*
   2 * RDMA device: Definitions of Resource Manager structures
   3 *
   4 * Copyright (C) 2018 Oracle
   5 * Copyright (C) 2018 Red Hat Inc
   6 *
   7 * Authors:
   8 *     Yuval Shaia <yuval.shaia@oracle.com>
   9 *     Marcel Apfelbaum <marcel@redhat.com>
  10 *
  11 * This work is licensed under the terms of the GNU GPL, version 2 or later.
  12 * See the COPYING file in the top-level directory.
  13 *
  14 */
  15
  16#ifndef RDMA_RM_DEFS_H
  17#define RDMA_RM_DEFS_H
  18
  19#include "rdma_backend_defs.h"
  20
  21#define MAX_PORTS             1
  22#define MAX_PORT_GIDS         1
  23#define MAX_GIDS              MAX_PORT_GIDS
  24#define MAX_PORT_PKEYS        1
  25#define MAX_PKEYS             MAX_PORT_PKEYS
  26#define MAX_UCS               512
  27#define MAX_MR_SIZE           (1UL << 27)
  28#define MAX_QP                1024
  29#define MAX_SGE               4
  30#define MAX_CQ                2048
  31#define MAX_MR                1024
  32#define MAX_PD                1024
  33#define MAX_QP_RD_ATOM        16
  34#define MAX_QP_INIT_RD_ATOM   16
  35#define MAX_AH                64
  36
  37#define MAX_RM_TBL_NAME 16
  38typedef struct RdmaRmResTbl {
  39    char name[MAX_RM_TBL_NAME];
  40    QemuMutex lock;
  41    unsigned long *bitmap;
  42    size_t tbl_sz;
  43    size_t res_sz;
  44    void *tbl;
  45} RdmaRmResTbl;
  46
  47typedef struct RdmaRmPD {
  48    RdmaBackendPD backend_pd;
  49    uint32_t ctx_handle;
  50} RdmaRmPD;
  51
  52typedef struct RdmaRmCQ {
  53    RdmaBackendCQ backend_cq;
  54    void *opaque;
  55    bool notify;
  56} RdmaRmCQ;
  57
  58/* MR (DMA region) */
  59typedef struct RdmaRmMR {
  60    RdmaBackendMR backend_mr;
  61    void *virt;
  62    uint64_t start;
  63    size_t length;
  64    uint32_t pd_handle;
  65    uint32_t lkey;
  66    uint32_t rkey;
  67} RdmaRmMR;
  68
  69typedef struct RdmaRmUC {
  70    uint64_t uc_handle;
  71} RdmaRmUC;
  72
  73typedef struct RdmaRmQP {
  74    RdmaBackendQP backend_qp;
  75    void *opaque;
  76    uint32_t qp_type;
  77    uint32_t qpn;
  78    uint32_t send_cq_handle;
  79    uint32_t recv_cq_handle;
  80    enum ibv_qp_state qp_state;
  81} RdmaRmQP;
  82
  83typedef struct RdmaRmPort {
  84    union ibv_gid gid_tbl[MAX_PORT_GIDS];
  85    enum ibv_port_state state;
  86} RdmaRmPort;
  87
  88struct RdmaDeviceResources {
  89    RdmaRmPort ports[MAX_PORTS];
  90    RdmaRmResTbl pd_tbl;
  91    RdmaRmResTbl mr_tbl;
  92    RdmaRmResTbl uc_tbl;
  93    RdmaRmResTbl qp_tbl;
  94    RdmaRmResTbl cq_tbl;
  95    RdmaRmResTbl cqe_ctx_tbl;
  96    GHashTable *qp_hash; /* Keeps mapping between real and emulated */
  97};
  98
  99#endif
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