1/*
 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 */