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rdma_rm.h (4826B)

      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