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nvme-rdma.h: Add includes for nvme rdma_cm negotiation

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NVMe over Fabrics RDMA transport defines a connection establishment
protocol over the RDMA connection manager. This header will be used by
both the host and target drivers to negotiate the connection
establishment parameters.

Signed-off-by: Jay Freyensee <james.p.freyensee@intel.com>
Signed-off-by: Ming Lin <ming.l@ssi.samsung.com>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Tested-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Sagi Grimberg 2016-07-06 21:55:50 +09:00 committed by Jens Axboe
parent def61eca96
commit 931a6de4d7
1 changed files with 71 additions and 0 deletions
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/*
* Copyright (c) 2015 Mellanox Technologies. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*/
#ifndef _LINUX_NVME_RDMA_H
#define _LINUX_NVME_RDMA_H
enum nvme_rdma_cm_fmt {
NVME_RDMA_CM_FMT_1_0 = 0x0,
};
enum nvme_rdma_cm_status {
NVME_RDMA_CM_INVALID_LEN = 0x01,
NVME_RDMA_CM_INVALID_RECFMT = 0x02,
NVME_RDMA_CM_INVALID_QID = 0x03,
NVME_RDMA_CM_INVALID_HSQSIZE = 0x04,
NVME_RDMA_CM_INVALID_HRQSIZE = 0x05,
NVME_RDMA_CM_NO_RSC = 0x06,
NVME_RDMA_CM_INVALID_IRD = 0x07,
NVME_RDMA_CM_INVALID_ORD = 0x08,
};
/**
* struct nvme_rdma_cm_req - rdma connect request
*
* @recfmt: format of the RDMA Private Data
* @qid: queue Identifier for the Admin or I/O Queue
* @hrqsize: host receive queue size to be created
* @hsqsize: host send queue size to be created
*/
struct nvme_rdma_cm_req {
__le16 recfmt;
__le16 qid;
__le16 hrqsize;
__le16 hsqsize;
u8 rsvd[24];
};
/**
* struct nvme_rdma_cm_rep - rdma connect reply
*
* @recfmt: format of the RDMA Private Data
* @crqsize: controller receive queue size
*/
struct nvme_rdma_cm_rep {
__le16 recfmt;
__le16 crqsize;
u8 rsvd[28];
};
/**
* struct nvme_rdma_cm_rej - rdma connect reject
*
* @recfmt: format of the RDMA Private Data
* @fsts: error status for the associated connect request
*/
struct nvme_rdma_cm_rej {
__le16 recfmt;
__le16 sts;
};
#endif /* _LINUX_NVME_RDMA_H */