linux/include/scsi/srp.h

/*
 * Copyright (c) 2005 Cisco Systems.  All rights reserved.
 *
 * This software is available to you under a choice of one of two
 * licenses.  You may choose to be licensed under the terms of the GNU
 * General Public License (GPL) Version 2, available from the file
 * COPYING in the main directory of this source tree, or the
 * OpenIB.org BSD license below:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - Redistributions in binary form must reproduce the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer in the documentation and/or other materials
 *        provided with the distribution.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 * $Id$
 */

#ifndef SCSI_SRP_H
#define SCSI_SRP_H

/*
 * Structures and constants for the SCSI RDMA Protocol (SRP) as
 * defined by the INCITS T10 committee.  This file was written using
 * draft Revision 16a of the SRP standard.
 */

#include <linux/types.h>
#include <scsi/scsi.h>

enum { … };

enum { … };

enum { … };

enum { … };

enum srp_login_rej_reason { … };

enum { … };

struct srp_direct_buf { … };

/*
 * We need the packed attribute because the SRP spec puts the list of
 * descriptors at an offset of 20, which is not aligned to the size of
 * struct srp_direct_buf.  The whole structure must be packed to avoid
 * having the 20-byte structure padded to 24 bytes on 64-bit architectures.
 */
struct srp_indirect_buf { … };

/* Immediate data buffer descriptor as defined in SRP2. */
struct srp_imm_buf { … };

/* srp_login_req.flags */
enum { … };

struct srp_login_req { … };

/**
 * struct srp_login_req_rdma - RDMA/CM login parameters.
 *
 * RDMA/CM over InfiniBand can only carry 92 - 36 = 56 bytes of private
 * data. The %srp_login_req_rdma structure contains the same information as
 * %srp_login_req but with the reserved data removed.
 */
struct srp_login_req_rdma { … };

/* srp_login_rsp.rsp_flags */
enum { … };

/*
 * The SRP spec defines the size of the LOGIN_RSP structure to be 52
 * bytes, so it needs to be packed to avoid having it padded to 56
 * bytes on 64-bit architectures.
 */
struct srp_login_rsp { … };

struct srp_login_rej { … };

struct srp_i_logout { … };

struct srp_t_logout { … };

struct srp_tsk_mgmt { … };

struct srp_cmd { … };

enum { … };

/*
 * The SRP spec defines the size of the RSP structure to be 36 bytes,
 * so it needs to be packed to avoid having it padded to 40 bytes on
 * 64-bit architectures.
 */
struct srp_rsp { … };

struct srp_cred_req { … };

struct srp_cred_rsp { … };

/*
 * The SRP spec defines the fixed portion of the AER_REQ structure to be
 * 36 bytes, so it needs to be packed to avoid having it padded to 40 bytes
 * on 64-bit architectures.
 */
struct srp_aer_req { … };

struct srp_aer_rsp { … };

#endif /* SCSI_SRP_H */