diff options
Diffstat (limited to 'include/rdma/rw.h')
| -rw-r--r-- | include/rdma/rw.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/include/rdma/rw.h b/include/rdma/rw.h index d606cac48233..6a1d08614e09 100644 --- a/include/rdma/rw.h +++ b/include/rdma/rw.h @@ -5,6 +5,7 @@ #ifndef _RDMA_RW_H #define _RDMA_RW_H +#include <linux/bvec.h> #include <linux/dma-mapping.h> #include <linux/scatterlist.h> #include <rdma/ib_verbs.h> @@ -31,6 +32,14 @@ struct rdma_rw_ctx { struct ib_rdma_wr *wrs; } map; + /* for IOVA-based mapping of bvecs into contiguous DMA range: */ + struct { + struct dma_iova_state state; + struct ib_sge sge; + struct ib_rdma_wr wr; + size_t mapped_len; + } iova; + /* for registering multiple WRs: */ struct rdma_rw_reg_ctx { struct ib_sge sge; @@ -38,6 +47,7 @@ struct rdma_rw_ctx { struct ib_reg_wr reg_wr; struct ib_send_wr inv_wr; struct ib_mr *mr; + struct sg_table sgt; } *reg; }; }; @@ -49,6 +59,16 @@ void rdma_rw_ctx_destroy(struct rdma_rw_ctx *ctx, struct ib_qp *qp, u32 port_num, struct scatterlist *sg, u32 sg_cnt, enum dma_data_direction dir); +struct bio_vec; + +int rdma_rw_ctx_init_bvec(struct rdma_rw_ctx *ctx, struct ib_qp *qp, + u32 port_num, const struct bio_vec *bvecs, u32 nr_bvec, + struct bvec_iter iter, u64 remote_addr, u32 rkey, + enum dma_data_direction dir); +void rdma_rw_ctx_destroy_bvec(struct rdma_rw_ctx *ctx, struct ib_qp *qp, + u32 port_num, const struct bio_vec *bvecs, u32 nr_bvec, + enum dma_data_direction dir); + int rdma_rw_ctx_signature_init(struct rdma_rw_ctx *ctx, struct ib_qp *qp, u32 port_num, struct scatterlist *sg, u32 sg_cnt, struct scatterlist *prot_sg, u32 prot_sg_cnt, @@ -66,6 +86,8 @@ int rdma_rw_ctx_post(struct rdma_rw_ctx *ctx, struct ib_qp *qp, u32 port_num, unsigned int rdma_rw_mr_factor(struct ib_device *device, u32 port_num, unsigned int maxpages); +unsigned int rdma_rw_max_send_wr(struct ib_device *dev, u32 port_num, + unsigned int max_rdma_ctxs, u32 create_flags); 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); |