GNU Linux-libre 6.7.9-gnu
[releases.git] / 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 */