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Commit 931a6de4 authored by Sagi Grimberg's avatar Sagi Grimberg Committed by Jens Axboe
Browse files

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



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: default avatarJay Freyensee <james.p.freyensee@intel.com>
Signed-off-by: default avatarMing Lin <ming.l@ssi.samsung.com>
Signed-off-by: default avatarSagi Grimberg <sagi@grimberg.me>
Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Reviewed-by: default avatarSteve Wise <swise@opengridcomputing.com>
Tested-by: default avatarSteve Wise <swise@opengridcomputing.com>
Signed-off-by: default avatarJens Axboe <axboe@fb.com>
parent def61eca

include/linux/nvme-rdma.h

0 → 100644
+71 −0
Original line number Diff line number Diff line 
/*

 * 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 */