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c098bbb00c
This patch adds the functions to build TID RDMA WRITE request. The work request opcode, packet opcode, and packet formats for TID RDMA WRITE protocol are also defined in this patch. Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com> Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com> Signed-off-by: Kaike Wan <kaike.wan@intel.com> Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
109 lines
2.1 KiB
C
109 lines
2.1 KiB
C
/* 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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