hw/rdma/rdma_rm.h

   1 /*
   2  * RDMA device: Definitions of Resource Manager functions
   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_H
  17 #define RDMA_RM_H
  18
  19 #include "qapi/error.h"
  20 #include "rdma_backend_defs.h"
  21 #include "rdma_rm_defs.h"
  22
  23 int rdma_rm_init(RdmaDeviceResources *dev_res,
  24                  struct ibv_device_attr *dev_attr);
  25 void rdma_rm_fini(RdmaDeviceResources *dev_res, RdmaBackendDev *backend_dev,
  26                   const char *ifname);
  27
  28 int rdma_rm_alloc_pd(RdmaDeviceResources *dev_res, RdmaBackendDev *backend_dev,
  29                      uint32_t *pd_handle, uint32_t ctx_handle);
  30 RdmaRmPD *rdma_rm_get_pd(RdmaDeviceResources *dev_res, uint32_t pd_handle);
  31 void rdma_rm_dealloc_pd(RdmaDeviceResources *dev_res, uint32_t pd_handle);
  32
  33 int rdma_rm_alloc_mr(RdmaDeviceResources *dev_res, uint32_t pd_handle,
  34                      uint64_t guest_start, uint64_t guest_length,
  35                      void *host_virt, int access_flags, uint32_t *mr_handle,
  36                      uint32_t *lkey, uint32_t *rkey);
  37 RdmaRmMR *rdma_rm_get_mr(RdmaDeviceResources *dev_res, uint32_t mr_handle);
  38 void rdma_rm_dealloc_mr(RdmaDeviceResources *dev_res, uint32_t mr_handle);
  39
  40 int rdma_rm_alloc_uc(RdmaDeviceResources *dev_res, uint32_t pfn,
  41                      uint32_t *uc_handle);
  42 RdmaRmUC *rdma_rm_get_uc(RdmaDeviceResources *dev_res, uint32_t uc_handle);
  43 void rdma_rm_dealloc_uc(RdmaDeviceResources *dev_res, uint32_t uc_handle);
  44
  45 int rdma_rm_alloc_cq(RdmaDeviceResources *dev_res, RdmaBackendDev *backend_dev,
  46                      uint32_t cqe, uint32_t *cq_handle, void *opaque);
  47 RdmaRmCQ *rdma_rm_get_cq(RdmaDeviceResources *dev_res, uint32_t cq_handle);
  48 void rdma_rm_req_notify_cq(RdmaDeviceResources *dev_res, uint32_t cq_handle,
  49                            bool notify);
  50 void rdma_rm_dealloc_cq(RdmaDeviceResources *dev_res, uint32_t cq_handle);
  51
  52 int rdma_rm_alloc_qp(RdmaDeviceResources *dev_res, uint32_t pd_handle,
  53                      uint8_t qp_type, uint32_t max_send_wr,
  54                      uint32_t max_send_sge, uint32_t send_cq_handle,
  55                      uint32_t max_recv_wr, uint32_t max_recv_sge,
  56                      uint32_t recv_cq_handle, void *opaque, uint32_t *qpn,
  57                      uint8_t is_srq, uint32_t srq_handle);
  58 RdmaRmQP *rdma_rm_get_qp(RdmaDeviceResources *dev_res, uint32_t qpn);
  59 int rdma_rm_modify_qp(RdmaDeviceResources *dev_res, RdmaBackendDev *backend_dev,
  60                       uint32_t qp_handle, uint32_t attr_mask, uint8_t sgid_idx,
  61                       union ibv_gid *dgid, uint32_t dqpn,
  62                       enum ibv_qp_state qp_state, uint32_t qkey,
  63                       uint32_t rq_psn, uint32_t sq_psn);
  64 int rdma_rm_query_qp(RdmaDeviceResources *dev_res, RdmaBackendDev *backend_dev,
  65                      uint32_t qp_handle, struct ibv_qp_attr *attr,
  66                      int attr_mask, struct ibv_qp_init_attr *init_attr);
  67 void rdma_rm_dealloc_qp(RdmaDeviceResources *dev_res, uint32_t qp_handle);
  68
  69 RdmaRmSRQ *rdma_rm_get_srq(RdmaDeviceResources *dev_res, uint32_t srq_handle);
  70 int rdma_rm_alloc_srq(RdmaDeviceResources *dev_res, uint32_t pd_handle,
  71                       uint32_t max_wr, uint32_t max_sge, uint32_t srq_limit,
  72                       uint32_t *srq_handle, void *opaque);
  73 int rdma_rm_query_srq(RdmaDeviceResources *dev_res, uint32_t srq_handle,
  74                       struct ibv_srq_attr *srq_attr);
  75 int rdma_rm_modify_srq(RdmaDeviceResources *dev_res, uint32_t srq_handle,
  76                        struct ibv_srq_attr *srq_attr, int srq_attr_mask);
  77 void rdma_rm_dealloc_srq(RdmaDeviceResources *dev_res, uint32_t srq_handle);
  78
  79 int rdma_rm_alloc_cqe_ctx(RdmaDeviceResources *dev_res, uint32_t *cqe_ctx_id,
  80                           void *ctx);
  81 void *rdma_rm_get_cqe_ctx(RdmaDeviceResources *dev_res, uint32_t cqe_ctx_id);
  82 void rdma_rm_dealloc_cqe_ctx(RdmaDeviceResources *dev_res, uint32_t cqe_ctx_id);
  83
  84 int rdma_rm_add_gid(RdmaDeviceResources *dev_res, RdmaBackendDev *backend_dev,
  85                     const char *ifname, union ibv_gid *gid, int gid_idx);
  86 int rdma_rm_del_gid(RdmaDeviceResources *dev_res, RdmaBackendDev *backend_dev,
  87                     const char *ifname, int gid_idx);
  88 int rdma_rm_get_backend_gid_index(RdmaDeviceResources *dev_res,
  89                                   RdmaBackendDev *backend_dev, int sgid_idx);
  90 static inline union ibv_gid *rdma_rm_get_gid(RdmaDeviceResources *dev_res,
  91                                              int sgid_idx)
  92 {
  93     return &dev_res->port.gid_tbl[sgid_idx].gid;
  94 }
  95 void rdma_format_device_counters(RdmaDeviceResources *dev_res, GString *buf);
  96
  97 #endif