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Name	Size	Permission	Date
ib.h	2.07 KB	-rw-r--r--	2024-03-10 20:38
ib_addr.h	7.16 KB	-rw-r--r--	2024-03-10 20:38
ib_cache.h	4.23 KB	-rw-r--r--	2024-03-10 20:38
ib_cm.h	16.73 KB	-rw-r--r--	2024-03-10 20:38
ib_hdrs.h	6.82 KB	-rw-r--r--	2024-03-10 20:38
ib_mad.h	24.58 KB	-rw-r--r--	2024-03-10 20:38
ib_marshall.h	778 B	-rw-r--r--	2024-03-10 20:38
ib_pack.h	7.89 KB	-rw-r--r--	2024-03-10 20:38
ib_pma.h	4.17 KB	-rw-r--r--	2024-03-10 20:38
ib_sa.h	19.53 KB	-rw-r--r--	2024-03-10 20:38
ib_smi.h	4.49 KB	-rw-r--r--	2024-03-10 20:38
ib_sysfs.h	1.23 KB	-rw-r--r--	2024-03-10 20:38
ib_umem.h	6.23 KB	-rw-r--r--	2024-03-10 20:38
ib_umem_odp.h	3.39 KB	-rw-r--r--	2024-03-10 20:38
ib_verbs.h	142.07 KB	-rw-r--r--	2026-07-01 19:48
iba.h	5.51 KB	-rw-r--r--	2024-03-10 20:38
ibta_vol1_c12.h	12.94 KB	-rw-r--r--	2024-03-10 20:38
iw_cm.h	6.49 KB	-rw-r--r--	2024-03-10 20:38
iw_portmap.h	2.19 KB	-rw-r--r--	2024-03-10 20:38
lag.h	530 B	-rw-r--r--	2024-03-10 20:38
mr_pool.h	568 B	-rw-r--r--	2024-03-10 20:38
opa_addr.h	2.39 KB	-rw-r--r--	2024-03-10 20:38
opa_port_info.h	13.43 KB	-rw-r--r--	2024-03-10 20:38
opa_smi.h	3 KB	-rw-r--r--	2024-03-10 20:38
opa_vnic.h	1.99 KB	-rw-r--r--	2024-03-10 20:38
rdma_cm.h	13.12 KB	-rw-r--r--	2024-03-10 20:38
rdma_cm_ib.h	797 B	-rw-r--r--	2024-03-10 20:38
rdma_counter.h	1.88 KB	-rw-r--r--	2024-03-10 20:38
rdma_netlink.h	3.97 KB	-rw-r--r--	2024-03-10 20:38
rdma_vt.h	14.22 KB	-rw-r--r--	2024-03-10 20:38
rdmavt_cq.h	1.74 KB	-rw-r--r--	2024-03-10 20:38
rdmavt_mr.h	3.94 KB	-rw-r--r--	2024-03-10 20:38
rdmavt_qp.h	28.01 KB	-rw-r--r--	2024-03-10 20:38
restrack.h	4.2 KB	-rw-r--r--	2024-03-10 20:38
rw.h	2.34 KB	-rw-r--r--	2026-07-01 19:48
signature.h	2.9 KB	-rw-r--r--	2024-03-10 20:38
tid_rdma_defs.h	2.05 KB	-rw-r--r--	2024-03-10 20:38
uverbs_ioctl.h	32.77 KB	-rw-r--r--	2024-03-10 20:38
uverbs_named_ioctl.h	4.72 KB	-rw-r--r--	2024-03-10 20:38
uverbs_std_types.h	5.24 KB	-rw-r--r--	2026-07-01 19:48
uverbs_types.h	6.06 KB	-rw-r--r--	2024-03-10 20:38

Rename

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (c) 2016 HGST, a Western Digital Company.
 */
#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 {
	/* number of RDMA READ/WRITE WRs (not counting MR WRs) */
	u32			nr_ops;

/* tag for the union below: */
	u8			type;

union {
		/* for mapping a single SGE: */
		struct {
			struct ib_sge		sge;
			struct ib_rdma_wr	wr;
		} single;

/* for mapping of multiple SGEs: */
		struct {
			struct ib_sge		*sges;
			struct ib_rdma_wr	*wrs;
		} map;

/* for registering multiple WRs: */
		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;
	};
};

int rdma_rw_ctx_init(struct rdma_rw_ctx *ctx, struct ib_qp *qp, u32 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,
			 u32 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,
		u32 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,
		u32 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,
		u32 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, u32 port_num,
		struct ib_cqe *cqe, struct ib_send_wr *chain_wr);

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);

#endif /* _RDMA_RW_H */