LXR linux/include/rdma/tid_rdma

   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
  12struct 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
  21struct 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
  30struct 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
  38struct 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
  48struct tid_rdma_write_data {
  49        __le32 kdeth0;
  50        __le32 kdeth1;
  51        __be32 reserved[6];
  52        __be32 verbs_qp;
  53};
  54
  55struct tid_rdma_resync {
  56        __le32 kdeth0;
  57        __le32 kdeth1;
  58        __be32 reserved[6];
  59        __be32 verbs_qp;
  60};
  61
  62struct 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
  77enum {
  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 */
 109