751522275a
There are certain operations that are well considered as part of device configuration while others are needed only when "start" command is triggered by the guest driver. An example of device initialization step is msix_init and example of "device start" stage is the creation of a CQ completion handler thread. Driver expects such distinction - implement it. Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com> Reviewed-by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com> Message-Id: <20180805153518.2983-2-yuval.shaia@oracle.com> Signed-off-by: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
103 lines
4 KiB
C
103 lines
4 KiB
C
/*
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* RDMA device: Definitions of Backend Device functions
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*
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* Copyright (C) 2018 Oracle
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* Copyright (C) 2018 Red Hat Inc
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*
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* Authors:
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* Yuval Shaia <yuval.shaia@oracle.com>
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* Marcel Apfelbaum <marcel@redhat.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*
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*/
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#ifndef RDMA_BACKEND_H
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#define RDMA_BACKEND_H
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#include "qapi/error.h"
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#include "rdma_rm_defs.h"
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#include "rdma_backend_defs.h"
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/* Add definition for QP0 and QP1 as there is no userspace enums for them */
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enum ibv_special_qp_type {
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IBV_QPT_SMI = 0,
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IBV_QPT_GSI = 1,
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};
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static inline union ibv_gid *rdma_backend_gid(RdmaBackendDev *dev)
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{
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return &dev->gid;
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}
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static inline uint32_t rdma_backend_qpn(const RdmaBackendQP *qp)
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{
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return qp->ibqp ? qp->ibqp->qp_num : 0;
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}
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static inline uint32_t rdma_backend_mr_lkey(const RdmaBackendMR *mr)
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{
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return mr->ibmr ? mr->ibmr->lkey : 0;
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}
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static inline uint32_t rdma_backend_mr_rkey(const RdmaBackendMR *mr)
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{
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return mr->ibmr ? mr->ibmr->rkey : 0;
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}
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int rdma_backend_init(RdmaBackendDev *backend_dev,
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RdmaDeviceResources *rdma_dev_res,
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const char *backend_device_name, uint8_t port_num,
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uint8_t backend_gid_idx, struct ibv_device_attr *dev_attr,
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Error **errp);
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void rdma_backend_fini(RdmaBackendDev *backend_dev);
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void rdma_backend_start(RdmaBackendDev *backend_dev);
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void rdma_backend_stop(RdmaBackendDev *backend_dev);
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void rdma_backend_register_comp_handler(void (*handler)(int status,
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unsigned int vendor_err, void *ctx));
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void rdma_backend_unregister_comp_handler(void);
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int rdma_backend_query_port(RdmaBackendDev *backend_dev,
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struct ibv_port_attr *port_attr);
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int rdma_backend_create_pd(RdmaBackendDev *backend_dev, RdmaBackendPD *pd);
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void rdma_backend_destroy_pd(RdmaBackendPD *pd);
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int rdma_backend_create_mr(RdmaBackendMR *mr, RdmaBackendPD *pd, void *addr,
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size_t length, int access);
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void rdma_backend_destroy_mr(RdmaBackendMR *mr);
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int rdma_backend_create_cq(RdmaBackendDev *backend_dev, RdmaBackendCQ *cq,
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int cqe);
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void rdma_backend_destroy_cq(RdmaBackendCQ *cq);
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void rdma_backend_poll_cq(RdmaDeviceResources *rdma_dev_res, RdmaBackendCQ *cq);
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int rdma_backend_create_qp(RdmaBackendQP *qp, uint8_t qp_type,
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RdmaBackendPD *pd, RdmaBackendCQ *scq,
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RdmaBackendCQ *rcq, uint32_t max_send_wr,
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uint32_t max_recv_wr, uint32_t max_send_sge,
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uint32_t max_recv_sge);
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int rdma_backend_qp_state_init(RdmaBackendDev *backend_dev, RdmaBackendQP *qp,
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uint8_t qp_type, uint32_t qkey);
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int rdma_backend_qp_state_rtr(RdmaBackendDev *backend_dev, RdmaBackendQP *qp,
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uint8_t qp_type, union ibv_gid *dgid,
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uint32_t dqpn, uint32_t rq_psn, uint32_t qkey,
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bool use_qkey);
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int rdma_backend_qp_state_rts(RdmaBackendQP *qp, uint8_t qp_type,
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uint32_t sq_psn, uint32_t qkey, bool use_qkey);
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int rdma_backend_query_qp(RdmaBackendQP *qp, struct ibv_qp_attr *attr,
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int attr_mask, struct ibv_qp_init_attr *init_attr);
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void rdma_backend_destroy_qp(RdmaBackendQP *qp);
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void rdma_backend_post_send(RdmaBackendDev *backend_dev,
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RdmaBackendQP *qp, uint8_t qp_type,
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struct ibv_sge *sge, uint32_t num_sge,
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union ibv_gid *dgid, uint32_t dqpn, uint32_t dqkey,
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void *ctx);
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void rdma_backend_post_recv(RdmaBackendDev *backend_dev,
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RdmaDeviceResources *rdma_dev_res,
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RdmaBackendQP *qp, uint8_t qp_type,
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struct ibv_sge *sge, uint32_t num_sge, void *ctx);
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#endif
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