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- #ifndef _RDMA_RW_H
- #define _RDMA_RW_H
- #include <linux/dma-mapping.h>
- #include <linux/scatterlist.h>
- #include <rdma/ib_verbs.h>
- #include <rdma/rdma_cm.h>
- #include <rdma/mr_pool.h>
- struct rdma_rw_ctx {
-
- u32 nr_ops;
-
- u8 type;
- union {
-
- struct {
- struct ib_sge sge;
- struct ib_rdma_wr wr;
- } single;
-
- struct {
- struct ib_sge *sges;
- struct ib_rdma_wr *wrs;
- } map;
-
- struct rdma_rw_reg_ctx {
- struct ib_sge sge;
- struct ib_rdma_wr wr;
- struct ib_reg_wr reg_wr;
- struct ib_send_wr inv_wr;
- struct ib_mr *mr;
- } *reg;
- struct {
- struct rdma_rw_reg_ctx data;
- struct rdma_rw_reg_ctx prot;
- struct ib_send_wr sig_inv_wr;
- struct ib_mr *sig_mr;
- struct ib_sge sig_sge;
- struct ib_sig_handover_wr sig_wr;
- } *sig;
- };
- };
- int rdma_rw_ctx_init(struct rdma_rw_ctx *ctx, struct ib_qp *qp, u8 port_num,
- struct scatterlist *sg, u32 sg_cnt, u32 sg_offset,
- u64 remote_addr, u32 rkey, enum dma_data_direction dir);
- void rdma_rw_ctx_destroy(struct rdma_rw_ctx *ctx, struct ib_qp *qp, u8 port_num,
- struct scatterlist *sg, u32 sg_cnt,
- enum dma_data_direction dir);
- int rdma_rw_ctx_signature_init(struct rdma_rw_ctx *ctx, struct ib_qp *qp,
- u8 port_num, struct scatterlist *sg, u32 sg_cnt,
- struct scatterlist *prot_sg, u32 prot_sg_cnt,
- struct ib_sig_attrs *sig_attrs, u64 remote_addr, u32 rkey,
- enum dma_data_direction dir);
- void rdma_rw_ctx_destroy_signature(struct rdma_rw_ctx *ctx, struct ib_qp *qp,
- u8 port_num, struct scatterlist *sg, u32 sg_cnt,
- struct scatterlist *prot_sg, u32 prot_sg_cnt,
- enum dma_data_direction dir);
- struct ib_send_wr *rdma_rw_ctx_wrs(struct rdma_rw_ctx *ctx, struct ib_qp *qp,
- u8 port_num, struct ib_cqe *cqe, struct ib_send_wr *chain_wr);
- int rdma_rw_ctx_post(struct rdma_rw_ctx *ctx, struct ib_qp *qp, u8 port_num,
- struct ib_cqe *cqe, struct ib_send_wr *chain_wr);
- void rdma_rw_init_qp(struct ib_device *dev, struct ib_qp_init_attr *attr);
- int rdma_rw_init_mrs(struct ib_qp *qp, struct ib_qp_init_attr *attr);
- void rdma_rw_cleanup_mrs(struct ib_qp *qp);
- #endif
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