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16#ifndef RDMA_BACKEND_H
17#define RDMA_BACKEND_H
18
19#include "qapi/error.h"
20#include "rdma_rm_defs.h"
21#include "rdma_backend_defs.h"
22
23
24enum ibv_special_qp_type {
25 IBV_QPT_SMI = 0,
26 IBV_QPT_GSI = 1,
27};
28
29static inline union ibv_gid *rdma_backend_gid(RdmaBackendDev *dev)
30{
31 return &dev->gid;
32}
33
34static inline uint32_t rdma_backend_qpn(const RdmaBackendQP *qp)
35{
36 return qp->ibqp ? qp->ibqp->qp_num : 0;
37}
38
39static inline uint32_t rdma_backend_mr_lkey(const RdmaBackendMR *mr)
40{
41 return mr->ibmr ? mr->ibmr->lkey : 0;
42}
43
44static inline uint32_t rdma_backend_mr_rkey(const RdmaBackendMR *mr)
45{
46 return mr->ibmr ? mr->ibmr->rkey : 0;
47}
48
49int rdma_backend_init(RdmaBackendDev *backend_dev,
50 RdmaDeviceResources *rdma_dev_res,
51 const char *backend_device_name, uint8_t port_num,
52 uint8_t backend_gid_idx, struct ibv_device_attr *dev_attr,
53 Error **errp);
54void rdma_backend_fini(RdmaBackendDev *backend_dev);
55void rdma_backend_register_comp_handler(void (*handler)(int status,
56 unsigned int vendor_err, void *ctx));
57void rdma_backend_unregister_comp_handler(void);
58
59int rdma_backend_query_port(RdmaBackendDev *backend_dev,
60 struct ibv_port_attr *port_attr);
61int rdma_backend_create_pd(RdmaBackendDev *backend_dev, RdmaBackendPD *pd);
62void rdma_backend_destroy_pd(RdmaBackendPD *pd);
63
64int rdma_backend_create_mr(RdmaBackendMR *mr, RdmaBackendPD *pd, void *addr,
65 size_t length, int access);
66void rdma_backend_destroy_mr(RdmaBackendMR *mr);
67
68int rdma_backend_create_cq(RdmaBackendDev *backend_dev, RdmaBackendCQ *cq,
69 int cqe);
70void rdma_backend_destroy_cq(RdmaBackendCQ *cq);
71void rdma_backend_poll_cq(RdmaDeviceResources *rdma_dev_res, RdmaBackendCQ *cq);
72
73int rdma_backend_create_qp(RdmaBackendQP *qp, uint8_t qp_type,
74 RdmaBackendPD *pd, RdmaBackendCQ *scq,
75 RdmaBackendCQ *rcq, uint32_t max_send_wr,
76 uint32_t max_recv_wr, uint32_t max_send_sge,
77 uint32_t max_recv_sge);
78int rdma_backend_qp_state_init(RdmaBackendDev *backend_dev, RdmaBackendQP *qp,
79 uint8_t qp_type, uint32_t qkey);
80int rdma_backend_qp_state_rtr(RdmaBackendDev *backend_dev, RdmaBackendQP *qp,
81 uint8_t qp_type, union ibv_gid *dgid,
82 uint32_t dqpn, uint32_t rq_psn, uint32_t qkey,
83 bool use_qkey);
84int rdma_backend_qp_state_rts(RdmaBackendQP *qp, uint8_t qp_type,
85 uint32_t sq_psn, uint32_t qkey, bool use_qkey);
86int rdma_backend_query_qp(RdmaBackendQP *qp, struct ibv_qp_attr *attr,
87 int attr_mask, struct ibv_qp_init_attr *init_attr);
88void rdma_backend_destroy_qp(RdmaBackendQP *qp);
89
90void rdma_backend_post_send(RdmaBackendDev *backend_dev,
91 RdmaBackendQP *qp, uint8_t qp_type,
92 struct ibv_sge *sge, uint32_t num_sge,
93 union ibv_gid *dgid, uint32_t dqpn, uint32_t dqkey,
94 void *ctx);
95void rdma_backend_post_recv(RdmaBackendDev *backend_dev,
96 RdmaDeviceResources *rdma_dev_res,
97 RdmaBackendQP *qp, uint8_t qp_type,
98 struct ibv_sge *sge, uint32_t num_sge, void *ctx);
99
100#endif
101