/* * Copyright (c) 2016 HGST, a Western Digital Company. * * This program is free software; you can redistribute it and/or modify it * under the terms and conditions of the GNU General Public License, * version 2, as published by the Free Software Foundation. * * This program is distributed in the hope it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for * more details. */ #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; 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 /* _RDMA_RW_H */ inux/net-next.git/log/include?id=238443df8154696018fd01c1a7c8fb352b9ee49e'>include</a>/<a href='/cgit.cgi/linux/net-next.git/log/include/uapi?id=238443df8154696018fd01c1a7c8fb352b9ee49e'>uapi</a>/<a href='/cgit.cgi/linux/net-next.git/log/include/uapi/video?id=238443df8154696018fd01c1a7c8fb352b9ee49e'>video</a>/<a href='/cgit.cgi/linux/net-next.git/log/include/uapi/video/sisfb.h?id=238443df8154696018fd01c1a7c8fb352b9ee49e'>sisfb.h</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/include/uapi/video/sisfb.h?id=238443df8154696018fd01c1a7c8fb352b9ee49e&showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr> es</th></tr>