diff options
Diffstat (limited to 'hw/rdma/rdma_backend.h')
| -rw-r--r-- | hw/rdma/rdma_backend.h | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/hw/rdma/rdma_backend.h b/hw/rdma/rdma_backend.h new file mode 100644 index 0000000000..68f2b05ca7 --- /dev/null +++ b/hw/rdma/rdma_backend.h @@ -0,0 +1,98 @@ +/* + * RDMA device: Definitions of Backend Device functions + * + * Copyright (C) 2018 Oracle + * Copyright (C) 2018 Red Hat Inc + * + * Authors: + * Yuval Shaia <yuval.shaia@oracle.com> + * Marcel Apfelbaum <marcel@redhat.com> + * + * This work is licensed under the terms of the GNU GPL, version 2 or later. + * See the COPYING file in the top-level directory. + * + */ + +#ifndef RDMA_BACKEND_H +#define RDMA_BACKEND_H + +#include <qapi/error.h> +#include "rdma_rm_defs.h" +#include "rdma_backend_defs.h" + +/* Add definition for QP0 and QP1 as there is no userspace enums for them */ +enum ibv_special_qp_type { + IBV_QPT_SMI = 0, + IBV_QPT_GSI = 1, +}; + +static inline union ibv_gid *rdma_backend_gid(RdmaBackendDev *dev) +{ + return &dev->gid; +} + +static inline uint32_t rdma_backend_qpn(const RdmaBackendQP *qp) +{ + return qp->ibqp ? qp->ibqp->qp_num : 0; +} + +static inline uint32_t rdma_backend_mr_lkey(const RdmaBackendMR *mr) +{ + return mr->ibmr ? mr->ibmr->lkey : 0; +} + +static inline uint32_t rdma_backend_mr_rkey(const RdmaBackendMR *mr) +{ + return mr->ibmr ? mr->ibmr->rkey : 0; +} + +int rdma_backend_init(RdmaBackendDev *backend_dev, + RdmaDeviceResources *rdma_dev_res, + const char *backend_device_name, uint8_t port_num, + uint8_t backend_gid_idx, struct ibv_device_attr *dev_attr, + Error **errp); +void rdma_backend_fini(RdmaBackendDev *backend_dev); +void rdma_backend_register_comp_handler(void (*handler)(int status, + unsigned int vendor_err, void *ctx)); +void rdma_backend_unregister_comp_handler(void); + +int rdma_backend_query_port(RdmaBackendDev *backend_dev, + struct ibv_port_attr *port_attr); +int rdma_backend_create_pd(RdmaBackendDev *backend_dev, RdmaBackendPD *pd); +void rdma_backend_destroy_pd(RdmaBackendPD *pd); + +int rdma_backend_create_mr(RdmaBackendMR *mr, RdmaBackendPD *pd, uint64_t addr, + size_t length, int access); +void rdma_backend_destroy_mr(RdmaBackendMR *mr); + +int rdma_backend_create_cq(RdmaBackendDev *backend_dev, RdmaBackendCQ *cq, + int cqe); +void rdma_backend_destroy_cq(RdmaBackendCQ *cq); +void rdma_backend_poll_cq(RdmaDeviceResources *rdma_dev_res, RdmaBackendCQ *cq); + +int rdma_backend_create_qp(RdmaBackendQP *qp, uint8_t qp_type, + RdmaBackendPD *pd, RdmaBackendCQ *scq, + RdmaBackendCQ *rcq, uint32_t max_send_wr, + uint32_t max_recv_wr, uint32_t max_send_sge, + uint32_t max_recv_sge); +int rdma_backend_qp_state_init(RdmaBackendDev *backend_dev, RdmaBackendQP *qp, + uint8_t qp_type, uint32_t qkey); +int rdma_backend_qp_state_rtr(RdmaBackendDev *backend_dev, RdmaBackendQP *qp, + uint8_t qp_type, union ibv_gid *dgid, + uint32_t dqpn, uint32_t rq_psn, uint32_t qkey, + bool use_qkey); +int rdma_backend_qp_state_rts(RdmaBackendQP *qp, uint8_t qp_type, + uint32_t sq_psn, uint32_t qkey, bool use_qkey); +void rdma_backend_destroy_qp(RdmaBackendQP *qp); + +void rdma_backend_post_send(RdmaBackendDev *backend_dev, + RdmaBackendQP *qp, uint8_t qp_type, + struct ibv_sge *sge, uint32_t num_sge, + union ibv_gid *dgid, uint32_t dqpn, uint32_t dqkey, + void *ctx); +void rdma_backend_post_recv(RdmaBackendDev *backend_dev, + RdmaDeviceResources *rdma_dev_res, + RdmaBackendQP *qp, uint8_t qp_type, + struct ibv_sge *sge, uint32_t num_sge, void *ctx); + +#endif |