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Sagi Grimberg931a6de2016-07-06 21:55:50 +09001/*
2 * Copyright (c) 2015 Mellanox Technologies. All rights reserved.
3 *
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms and conditions of the GNU General Public License,
6 * version 2, as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
11 * more details.
12 */
13
14#ifndef _LINUX_NVME_RDMA_H
15#define _LINUX_NVME_RDMA_H
16
17enum nvme_rdma_cm_fmt {
18 NVME_RDMA_CM_FMT_1_0 = 0x0,
19};
20
21enum nvme_rdma_cm_status {
22 NVME_RDMA_CM_INVALID_LEN = 0x01,
23 NVME_RDMA_CM_INVALID_RECFMT = 0x02,
24 NVME_RDMA_CM_INVALID_QID = 0x03,
25 NVME_RDMA_CM_INVALID_HSQSIZE = 0x04,
26 NVME_RDMA_CM_INVALID_HRQSIZE = 0x05,
27 NVME_RDMA_CM_NO_RSC = 0x06,
28 NVME_RDMA_CM_INVALID_IRD = 0x07,
29 NVME_RDMA_CM_INVALID_ORD = 0x08,
30};
31
32/**
33 * struct nvme_rdma_cm_req - rdma connect request
34 *
35 * @recfmt: format of the RDMA Private Data
36 * @qid: queue Identifier for the Admin or I/O Queue
37 * @hrqsize: host receive queue size to be created
38 * @hsqsize: host send queue size to be created
39 */
40struct nvme_rdma_cm_req {
41 __le16 recfmt;
42 __le16 qid;
43 __le16 hrqsize;
44 __le16 hsqsize;
45 u8 rsvd[24];
46};
47
48/**
49 * struct nvme_rdma_cm_rep - rdma connect reply
50 *
51 * @recfmt: format of the RDMA Private Data
52 * @crqsize: controller receive queue size
53 */
54struct nvme_rdma_cm_rep {
55 __le16 recfmt;
56 __le16 crqsize;
57 u8 rsvd[28];
58};
59
60/**
61 * struct nvme_rdma_cm_rej - rdma connect reject
62 *
63 * @recfmt: format of the RDMA Private Data
64 * @fsts: error status for the associated connect request
65 */
66struct nvme_rdma_cm_rej {
67 __le16 recfmt;
68 __le16 sts;
69};
70
71#endif /* _LINUX_NVME_RDMA_H */