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 #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
  41 typedef 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
  51 typedef struct RdmaRmPD {
  52     RdmaBackendPD backend_pd;
  53     uint32_t ctx_handle;
  54 } RdmaRmPD;
  55
  56 typedef enum CQNotificationType {
  57     CNT_CLEAR,
  58     CNT_ARM,
  59     CNT_SET,
  60 } CQNotificationType;
  61
  62 typedef struct RdmaRmCQ {
  63     RdmaBackendCQ backend_cq;
  64     void *opaque;
  65     CQNotificationType notify;
  66 } RdmaRmCQ;
  67
  68 /* MR (DMA region) */
  69 typedef 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
  79 typedef struct RdmaRmUC {
  80     uint64_t uc_handle;
  81 } RdmaRmUC;
  82
  83 typedef 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
  94 typedef struct RdmaRmSRQ {
  95     RdmaBackendSRQ backend_srq;
  96     uint32_t recv_cq_handle;
  97     void *opaque;
  98 } RdmaRmSRQ;
  99
 100 typedef struct RdmaRmGid {
 101     union ibv_gid gid;
 102     int backend_gid_index;
 103 } RdmaRmGid;
 104
 105 typedef struct RdmaRmPort {
 106     RdmaRmGid gid_tbl[MAX_PORT_GIDS];
 107     enum ibv_port_state state;
 108 } RdmaRmPort;
 109
 110 typedef 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
 132 struct 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