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 /* 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#define MAX_SRQ               512
  37
  38#define MAX_RM_TBL_NAME             16
  39#define MAX_CONSEQ_EMPTY_POLL_CQ    4096 /* considered as error above this */
  40
  41typedef struct RdmaRmResTbl {
  42    char name[MAX_RM_TBL_NAME];
  43    QemuMutex lock;
  44    unsigned long *bitmap;
  45    size_t tbl_sz;
  46    size_t res_sz;
  47    void *tbl;
  48    uint32_t used; /* number of used entries in the table */
  49} RdmaRmResTbl;
  50
  51typedef struct RdmaRmPD {
  52    RdmaBackendPD backend_pd;
  53    uint32_t ctx_handle;
  54} RdmaRmPD;
  55
  56typedef enum CQNotificationType {
  57    CNT_CLEAR,
  58    CNT_ARM,
  59    CNT_SET,
  60} CQNotificationType;
  61
  62typedef struct RdmaRmCQ {
  63    RdmaBackendCQ backend_cq;
  64    void *opaque;
  65    CQNotificationType notify;
  66} RdmaRmCQ;
  67
  68/* MR (DMA region) */
  69typedef struct RdmaRmMR {
  70    RdmaBackendMR backend_mr;
  71    void *virt;
  72    uint64_t start;
  73    size_t length;
  74    uint32_t pd_handle;
  75    uint32_t lkey;
  76    uint32_t rkey;
  77} RdmaRmMR;
  78
  79typedef struct RdmaRmUC {
  80    uint64_t uc_handle;
  81} RdmaRmUC;
  82
  83typedef struct RdmaRmQP {
  84    RdmaBackendQP backend_qp;
  85    void *opaque;
  86    uint32_t qp_type;
  87    uint32_t qpn;
  88    uint32_t send_cq_handle;
  89    uint32_t recv_cq_handle;
  90    enum ibv_qp_state qp_state;
  91    uint8_t is_srq;
  92} RdmaRmQP;
  93
  94typedef struct RdmaRmSRQ {
  95    RdmaBackendSRQ backend_srq;
  96    uint32_t recv_cq_handle;
  97    void *opaque;
  98} RdmaRmSRQ;
  99
 100typedef struct RdmaRmGid {
 101    union ibv_gid gid;
 102    int backend_gid_index;
 103} RdmaRmGid;
 104
 105typedef struct RdmaRmPort {
 106    RdmaRmGid gid_tbl[MAX_PORT_GIDS];
 107    enum ibv_port_state state;
 108} RdmaRmPort;
 109
 110typedef struct RdmaRmStats {
 111    uint64_t tx;
 112    uint64_t tx_len;
 113    uint64_t tx_err;
 114    uint64_t rx_bufs;
 115    uint64_t rx_bufs_len;
 116    uint64_t rx_bufs_err;
 117    uint64_t rx_srq;
 118    uint64_t completions;
 119    uint64_t mad_tx;
 120    uint64_t mad_tx_err;
 121    uint64_t mad_rx;
 122    uint64_t mad_rx_err;
 123    uint64_t mad_rx_bufs;
 124    uint64_t mad_rx_bufs_err;
 125    uint64_t poll_cq_from_bk;
 126    uint64_t poll_cq_from_guest;
 127    uint64_t poll_cq_from_guest_empty;
 128    uint64_t poll_cq_ppoll_to;
 129    uint32_t missing_cqe;
 130} RdmaRmStats;
 131
 132struct RdmaDeviceResources {
 133    RdmaRmPort port;
 134    RdmaRmResTbl pd_tbl;
 135    RdmaRmResTbl mr_tbl;
 136    RdmaRmResTbl uc_tbl;
 137    RdmaRmResTbl qp_tbl;
 138    RdmaRmResTbl cq_tbl;
 139    RdmaRmResTbl cqe_ctx_tbl;
 140    RdmaRmResTbl srq_tbl;
 141    GHashTable *qp_hash; /* Keeps mapping between real and emulated */
 142    QemuMutex lock;
 143    RdmaRmStats stats;
 144};
 145
 146#endif
 147