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96 lines
2.2 KiB
96 lines
2.2 KiB
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
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/* |
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* iSCSI Transport BSG Interface |
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* |
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* Copyright (C) 2009 James Smart, Emulex Corporation |
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*/ |
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#ifndef SCSI_BSG_ISCSI_H |
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#define SCSI_BSG_ISCSI_H |
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/* |
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* This file intended to be included by both kernel and user space |
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*/ |
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#include <scsi/scsi.h> |
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/* |
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* iSCSI Transport SGIO v4 BSG Message Support |
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*/ |
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/* Default BSG request timeout (in seconds) */ |
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#define ISCSI_DEFAULT_BSG_TIMEOUT (10 * HZ) |
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/* |
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* Request Message Codes supported by the iSCSI Transport |
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*/ |
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/* define the class masks for the message codes */ |
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#define ISCSI_BSG_CLS_MASK 0xF0000000 /* find object class */ |
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#define ISCSI_BSG_HST_MASK 0x80000000 /* iscsi host class */ |
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/* iscsi host Message Codes */ |
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#define ISCSI_BSG_HST_VENDOR (ISCSI_BSG_HST_MASK | 0x000000FF) |
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/* |
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* iSCSI Host Messages |
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*/ |
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/* ISCSI_BSG_HST_VENDOR : */ |
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/* Request: |
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* Note: When specifying vendor_id, be sure to read the Vendor Type and ID |
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* formatting requirements specified in scsi_netlink.h |
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*/ |
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struct iscsi_bsg_host_vendor { |
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/* |
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* Identifies the vendor that the message is formatted for. This |
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* should be the recipient of the message. |
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*/ |
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uint64_t vendor_id; |
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/* start of vendor command area */ |
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uint32_t vendor_cmd[]; |
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}; |
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/* Response: |
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*/ |
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struct iscsi_bsg_host_vendor_reply { |
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/* start of vendor response area */ |
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uint32_t vendor_rsp[0]; |
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}; |
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/* request (CDB) structure of the sg_io_v4 */ |
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struct iscsi_bsg_request { |
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uint32_t msgcode; |
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union { |
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struct iscsi_bsg_host_vendor h_vendor; |
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} rqst_data; |
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} __attribute__((packed)); |
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/* response (request sense data) structure of the sg_io_v4 */ |
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struct iscsi_bsg_reply { |
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/* |
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* The completion result. Result exists in two forms: |
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* if negative, it is an -Exxx system errno value. There will |
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* be no further reply information supplied. |
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* else, it's the 4-byte scsi error result, with driver, host, |
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* msg and status fields. The per-msgcode reply structure |
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* will contain valid data. |
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*/ |
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uint32_t result; |
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/* If there was reply_payload, how much was recevied ? */ |
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uint32_t reply_payload_rcv_len; |
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union { |
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struct iscsi_bsg_host_vendor_reply vendor_reply; |
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} reply_data; |
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}; |
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#endif /* SCSI_BSG_ISCSI_H */
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