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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/include/rdma/tid_rdma_defs.h
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/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */

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/*

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 * Copyright(c) 2018 Intel Corporation.

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 *

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 */

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#ifndef TID_RDMA_DEFS_H

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#define TID_RDMA_DEFS_H

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#include <rdma/ib_pack.h>

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struct tid_rdma_read_req {

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	__le32 kdeth0;

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	__le32 kdeth1;

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	struct ib_reth reth;

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	__be32 tid_flow_psn;

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	__be32 tid_flow_qp;

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	__be32 verbs_qp;

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};

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struct tid_rdma_read_resp {

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	__le32 kdeth0;

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	__le32 kdeth1;

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	__be32 aeth;

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	__be32 reserved[4];

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	__be32 verbs_psn;

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	__be32 verbs_qp;

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};

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struct tid_rdma_write_req {

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	__le32 kdeth0;

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	__le32 kdeth1;

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	struct ib_reth reth;

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	__be32 reserved[2];

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	__be32 verbs_qp;

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};

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struct tid_rdma_write_resp {

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	__le32 kdeth0;

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	__le32 kdeth1;

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	__be32 aeth;

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	__be32 reserved[3];

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	__be32 tid_flow_psn;

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	__be32 tid_flow_qp;

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	__be32 verbs_qp;

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};

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struct tid_rdma_write_data {

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	__le32 kdeth0;

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	__le32 kdeth1;

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	__be32 reserved[6];

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	__be32 verbs_qp;

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};

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struct tid_rdma_resync {

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	__le32 kdeth0;

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	__le32 kdeth1;

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	__be32 reserved[6];

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	__be32 verbs_qp;

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};

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struct tid_rdma_ack {

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	__le32 kdeth0;

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	__le32 kdeth1;

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	__be32 aeth;

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	__be32 reserved[2];

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	__be32 tid_flow_psn;

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	__be32 verbs_psn;

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	__be32 tid_flow_qp;

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	__be32 verbs_qp;

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};

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/*

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 * TID RDMA Opcodes

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 */

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#define IB_OPCODE_TID_RDMA 0xe0

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enum {

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	IB_OPCODE_WRITE_REQ       = 0x0,

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	IB_OPCODE_WRITE_RESP      = 0x1,

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	IB_OPCODE_WRITE_DATA      = 0x2,

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	IB_OPCODE_WRITE_DATA_LAST = 0x3,

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	IB_OPCODE_READ_REQ        = 0x4,

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	IB_OPCODE_READ_RESP       = 0x5,

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	IB_OPCODE_RESYNC          = 0x6,

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	IB_OPCODE_ACK             = 0x7,

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	IB_OPCODE(TID_RDMA, WRITE_REQ),

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	IB_OPCODE(TID_RDMA, WRITE_RESP),

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	IB_OPCODE(TID_RDMA, WRITE_DATA),

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	IB_OPCODE(TID_RDMA, WRITE_DATA_LAST),

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	IB_OPCODE(TID_RDMA, READ_REQ),

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	IB_OPCODE(TID_RDMA, READ_RESP),

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	IB_OPCODE(TID_RDMA, RESYNC),

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	IB_OPCODE(TID_RDMA, ACK),

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};

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#define TID_OP(x) IB_OPCODE_TID_RDMA_##x

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/*

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 * Define TID RDMA specific WR opcodes. The ib_wr_opcode

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 * enum already provides some reserved values for use by

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 * low level drivers. Two of those are used but renamed

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 * to be more descriptive.

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 */

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#define IB_WR_TID_RDMA_WRITE IB_WR_RESERVED1

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#define IB_WR_TID_RDMA_READ  IB_WR_RESERVED2

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#endif /* TID_RDMA_DEFS_H */

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