include/rdma/tid_rdma_defs.h

   1 /* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
   2 /*
   3  * Copyright(c) 2018 Intel Corporation.
   4  *
   5  */
   6
   7 #ifndef TID_RDMA_DEFS_H
   8 #define TID_RDMA_DEFS_H
   9
  10 #include <rdma/ib_pack.h>
  11
  12 struct tid_rdma_read_req {
  13         __le32 kdeth0;
  14         __le32 kdeth1;
  15         struct ib_reth reth;
  16         __be32 tid_flow_psn;
  17         __be32 tid_flow_qp;
  18         __be32 verbs_qp;
  19 };
  20
  21 struct tid_rdma_read_resp {
  22         __le32 kdeth0;
  23         __le32 kdeth1;
  24         __be32 aeth;
  25         __be32 reserved[4];
  26         __be32 verbs_psn;
  27         __be32 verbs_qp;
  28 };
  29
  30 struct tid_rdma_write_req {
  31         __le32 kdeth0;
  32         __le32 kdeth1;
  33         struct ib_reth reth;
  34         __be32 reserved[2];
  35         __be32 verbs_qp;
  36 };
  37
  38 struct tid_rdma_write_resp {
  39         __le32 kdeth0;
  40         __le32 kdeth1;
  41         __be32 aeth;
  42         __be32 reserved[3];
  43         __be32 tid_flow_psn;
  44         __be32 tid_flow_qp;
  45         __be32 verbs_qp;
  46 };
  47
  48 struct tid_rdma_write_data {
  49         __le32 kdeth0;
  50         __le32 kdeth1;
  51         __be32 reserved[6];
  52         __be32 verbs_qp;
  53 };
  54
  55 struct tid_rdma_resync {
  56         __le32 kdeth0;
  57         __le32 kdeth1;
  58         __be32 reserved[6];
  59         __be32 verbs_qp;
  60 };
  61
  62 struct tid_rdma_ack {
  63         __le32 kdeth0;
  64         __le32 kdeth1;
  65         __be32 aeth;
  66         __be32 reserved[2];
  67         __be32 tid_flow_psn;
  68         __be32 verbs_psn;
  69         __be32 tid_flow_qp;
  70         __be32 verbs_qp;
  71 };
  72
  73 /*
  74  * TID RDMA Opcodes
  75  */
  76 #define IB_OPCODE_TID_RDMA 0xe0
  77 enum {
  78         IB_OPCODE_WRITE_REQ       = 0x0,
  79         IB_OPCODE_WRITE_RESP      = 0x1,
  80         IB_OPCODE_WRITE_DATA      = 0x2,
  81         IB_OPCODE_WRITE_DATA_LAST = 0x3,
  82         IB_OPCODE_READ_REQ        = 0x4,
  83         IB_OPCODE_READ_RESP       = 0x5,
  84         IB_OPCODE_RESYNC          = 0x6,
  85         IB_OPCODE_ACK             = 0x7,
  86
  87         IB_OPCODE(TID_RDMA, WRITE_REQ),
  88         IB_OPCODE(TID_RDMA, WRITE_RESP),
  89         IB_OPCODE(TID_RDMA, WRITE_DATA),
  90         IB_OPCODE(TID_RDMA, WRITE_DATA_LAST),
  91         IB_OPCODE(TID_RDMA, READ_REQ),
  92         IB_OPCODE(TID_RDMA, READ_RESP),
  93         IB_OPCODE(TID_RDMA, RESYNC),
  94         IB_OPCODE(TID_RDMA, ACK),
  95 };
  96
  97 #define TID_OP(x) IB_OPCODE_TID_RDMA_##x
  98
  99 /*
 100  * Define TID RDMA specific WR opcodes. The ib_wr_opcode
 101  * enum already provides some reserved values for use by
 102  * low level drivers. Two of those are used but renamed
 103  * to be more descriptive.
 104  */
 105 #define IB_WR_TID_RDMA_WRITE IB_WR_RESERVED1
 106 #define IB_WR_TID_RDMA_READ  IB_WR_RESERVED2
 107
 108 #endif /* TID_RDMA_DEFS_H */