mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-31 00:17:44 +00:00
111 lines
2.8 KiB
C
111 lines
2.8 KiB
C
|
/*
|
||
|
|
* iSCSI Transport BSG Interface
|
||
|
|
*
|
||
|
|
* Copyright (C) 2009 James Smart, Emulex Corporation
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or modify
|
||
|
|
* it under the terms of the GNU General Public License as published by
|
||
|
|
* the Free Software Foundation; either version 2 of the License, or
|
||
|
|
* (at your option) any later version.
|
||
|
|
*
|
||
|
|
* This program is distributed in the hope that 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.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU General Public License
|
||
|
|
* along with this program; if not, write to the Free Software
|
||
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef SCSI_BSG_ISCSI_H
|
||
|
|
#define SCSI_BSG_ISCSI_H
|
||
|
|
|
||
|
|
/*
|
||
|
|
* This file intended to be included by both kernel and user space
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <scsi/scsi.h>
|
||
|
|
|
||
|
|
/*
|
||
|
|
* iSCSI Transport SGIO v4 BSG Message Support
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* Default BSG request timeout (in seconds) */
|
||
|
|
#define ISCSI_DEFAULT_BSG_TIMEOUT (10 * HZ)
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Request Message Codes supported by the iSCSI Transport
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* define the class masks for the message codes */
|
||
|
|
#define ISCSI_BSG_CLS_MASK 0xF0000000 /* find object class */
|
||
|
|
#define ISCSI_BSG_HST_MASK 0x80000000 /* iscsi host class */
|
||
|
|
|
||
|
|
/* iscsi host Message Codes */
|
||
|
|
#define ISCSI_BSG_HST_VENDOR (ISCSI_BSG_HST_MASK | 0x000000FF)
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* iSCSI Host Messages
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* ISCSI_BSG_HST_VENDOR : */
|
||
|
|
|
||
|
|
/* Request:
|
||
|
|
* Note: When specifying vendor_id, be sure to read the Vendor Type and ID
|
||
|
|
* formatting requirements specified in scsi_netlink.h
|
||
|
|
*/
|
||
|
|
struct iscsi_bsg_host_vendor {
|
||
|
|
/*
|
||
|
|
* Identifies the vendor that the message is formatted for. This
|
||
|
|
* should be the recipient of the message.
|
||
|
|
*/
|
||
|
|
uint64_t vendor_id;
|
||
|
|
|
||
|
|
/* start of vendor command area */
|
||
|
|
uint32_t vendor_cmd[0];
|
||
|
|
};
|
||
|
|
|
||
|
|
/* Response:
|
||
|
|
*/
|
||
|
|
struct iscsi_bsg_host_vendor_reply {
|
||
|
|
/* start of vendor response area */
|
||
|
|
uint32_t vendor_rsp[0];
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
/* request (CDB) structure of the sg_io_v4 */
|
||
|
|
struct iscsi_bsg_request {
|
||
|
|
uint32_t msgcode;
|
||
|
|
union {
|
||
|
|
struct iscsi_bsg_host_vendor h_vendor;
|
||
|
|
} rqst_data;
|
||
|
|
} __attribute__((packed));
|
||
|
|
|
||
|
|
|
||
|
|
/* response (request sense data) structure of the sg_io_v4 */
|
||
|
|
struct iscsi_bsg_reply {
|
||
|
|
/*
|
||
|
|
* The completion result. Result exists in two forms:
|
||
|
|
* if negative, it is an -Exxx system errno value. There will
|
||
|
|
* be no further reply information supplied.
|
||
|
|
* else, it's the 4-byte scsi error result, with driver, host,
|
||
|
|
* msg and status fields. The per-msgcode reply structure
|
||
|
|
* will contain valid data.
|
||
|
|
*/
|
||
|
|
uint32_t result;
|
||
|
|
|
||
|
|
/* If there was reply_payload, how much was recevied ? */
|
||
|
|
uint32_t reply_payload_rcv_len;
|
||
|
|
|
||
|
|
union {
|
||
|
|
struct iscsi_bsg_host_vendor_reply vendor_reply;
|
||
|
|
} reply_data;
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
#endif /* SCSI_BSG_ISCSI_H */
|