hw/rdma/rdma_rm_defs.h

   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 /* Do not change - we support only one port */
  22 #define MAX_PORT_GIDS         255
  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
  38 typedef 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
  47 typedef struct RdmaRmPD {
  48     RdmaBackendPD backend_pd;
  49     uint32_t ctx_handle;
  50 } RdmaRmPD;
  51
  52 typedef enum CQNotificationType {
  53     CNT_CLEAR,
  54     CNT_ARM,
  55     CNT_SET,
  56 } CQNotificationType;
  57
  58 typedef struct RdmaRmCQ {
  59     RdmaBackendCQ backend_cq;
  60     void *opaque;
  61     CQNotificationType notify;
  62 } RdmaRmCQ;
  63
  64 /* MR (DMA region) */
  65 typedef struct RdmaRmMR {
  66     RdmaBackendMR backend_mr;
  67     void *virt;
  68     uint64_t start;
  69     size_t length;
  70     uint32_t pd_handle;
  71     uint32_t lkey;
  72     uint32_t rkey;
  73 } RdmaRmMR;
  74
  75 typedef struct RdmaRmUC {
  76     uint64_t uc_handle;
  77 } RdmaRmUC;
  78
  79 typedef struct RdmaRmQP {
  80     RdmaBackendQP backend_qp;
  81     void *opaque;
  82     uint32_t qp_type;
  83     uint32_t qpn;
  84     uint32_t send_cq_handle;
  85     uint32_t recv_cq_handle;
  86     enum ibv_qp_state qp_state;
  87 } RdmaRmQP;
  88
  89 typedef struct RdmaRmGid {
  90     union ibv_gid gid;
  91     int backend_gid_index;
  92 } RdmaRmGid;
  93
  94 typedef struct RdmaRmPort {
  95     RdmaRmGid gid_tbl[MAX_PORT_GIDS];
  96     enum ibv_port_state state;
  97 } RdmaRmPort;
  98
  99 typedef struct RdmaDeviceResources {
 100     RdmaRmPort port;
 101     RdmaRmResTbl pd_tbl;
 102     RdmaRmResTbl mr_tbl;
 103     RdmaRmResTbl uc_tbl;
 104     RdmaRmResTbl qp_tbl;
 105     RdmaRmResTbl cq_tbl;
 106     RdmaRmResTbl cqe_ctx_tbl;
 107     GHashTable *qp_hash; /* Keeps mapping between real and emulated */
 108 } RdmaDeviceResources;
 109
 110 #endif