/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* iSCSI Transport BSG Interface
*
* Copyright (C) 2009 James Smart, Emulex Corporation
*/
#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;
struct iscsi_bsg_host_vendor_reply vendor_reply;
} reply_data;
#endif /* SCSI_BSG_ISCSI_H */