include/rdma/tid_rdma_defs.h

0001 /* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
0002 /*
0003  * Copyright(c) 2018 Intel Corporation.
0004  *
0005  */
0006
0007 #ifndef TID_RDMA_DEFS_H
0008 #define TID_RDMA_DEFS_H
0009
0010 #include <rdma/ib_pack.h>
0011
0012 struct tid_rdma_read_req {
0013     __le32 kdeth0;
0014     __le32 kdeth1;
0015     struct ib_reth reth;
0016     __be32 tid_flow_psn;
0017     __be32 tid_flow_qp;
0018     __be32 verbs_qp;
0019 };
0020
0021 struct tid_rdma_read_resp {
0022     __le32 kdeth0;
0023     __le32 kdeth1;
0024     __be32 aeth;
0025     __be32 reserved[4];
0026     __be32 verbs_psn;
0027     __be32 verbs_qp;
0028 };
0029
0030 struct tid_rdma_write_req {
0031     __le32 kdeth0;
0032     __le32 kdeth1;
0033     struct ib_reth reth;
0034     __be32 reserved[2];
0035     __be32 verbs_qp;
0036 };
0037
0038 struct tid_rdma_write_resp {
0039     __le32 kdeth0;
0040     __le32 kdeth1;
0041     __be32 aeth;
0042     __be32 reserved[3];
0043     __be32 tid_flow_psn;
0044     __be32 tid_flow_qp;
0045     __be32 verbs_qp;
0046 };
0047
0048 struct tid_rdma_write_data {
0049     __le32 kdeth0;
0050     __le32 kdeth1;
0051     __be32 reserved[6];
0052     __be32 verbs_qp;
0053 };
0054
0055 struct tid_rdma_resync {
0056     __le32 kdeth0;
0057     __le32 kdeth1;
0058     __be32 reserved[6];
0059     __be32 verbs_qp;
0060 };
0061
0062 struct tid_rdma_ack {
0063     __le32 kdeth0;
0064     __le32 kdeth1;
0065     __be32 aeth;
0066     __be32 reserved[2];
0067     __be32 tid_flow_psn;
0068     __be32 verbs_psn;
0069     __be32 tid_flow_qp;
0070     __be32 verbs_qp;
0071 };
0072
0073 /*
0074  * TID RDMA Opcodes
0075  */
0076 #define IB_OPCODE_TID_RDMA 0xe0
0077 enum {
0078     IB_OPCODE_WRITE_REQ       = 0x0,
0079     IB_OPCODE_WRITE_RESP      = 0x1,
0080     IB_OPCODE_WRITE_DATA      = 0x2,
0081     IB_OPCODE_WRITE_DATA_LAST = 0x3,
0082     IB_OPCODE_READ_REQ        = 0x4,
0083     IB_OPCODE_READ_RESP       = 0x5,
0084     IB_OPCODE_RESYNC          = 0x6,
0085     IB_OPCODE_ACK             = 0x7,
0086
0087     IB_OPCODE(TID_RDMA, WRITE_REQ),
0088     IB_OPCODE(TID_RDMA, WRITE_RESP),
0089     IB_OPCODE(TID_RDMA, WRITE_DATA),
0090     IB_OPCODE(TID_RDMA, WRITE_DATA_LAST),
0091     IB_OPCODE(TID_RDMA, READ_REQ),
0092     IB_OPCODE(TID_RDMA, READ_RESP),
0093     IB_OPCODE(TID_RDMA, RESYNC),
0094     IB_OPCODE(TID_RDMA, ACK),
0095 };
0096
0097 #define TID_OP(x) IB_OPCODE_TID_RDMA_##x
0098
0099 /*
0100  * Define TID RDMA specific WR opcodes. The ib_wr_opcode
0101  * enum already provides some reserved values for use by
0102  * low level drivers. Two of those are used but renamed
0103  * to be more descriptive.
0104  */
0105 #define IB_WR_TID_RDMA_WRITE IB_WR_RESERVED1
0106 #define IB_WR_TID_RDMA_READ  IB_WR_RESERVED2
0107
0108 #endif /* TID_RDMA_DEFS_H */