cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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scsi_bsg_iscsi.h (2211B)

      1/* SPDX-License-Identifier: GPL-2.0-or-later */
      2/*
      3 *  iSCSI Transport BSG Interface
      4 *
      5 *  Copyright (C) 2009   James Smart, Emulex Corporation
      6 */
      7
      8#ifndef SCSI_BSG_ISCSI_H
      9#define SCSI_BSG_ISCSI_H
     10
     11/*
     12 * This file intended to be included by both kernel and user space
     13 */
     14
     15#include <scsi/scsi.h>
     16
     17/*
     18 * iSCSI Transport SGIO v4 BSG Message Support
     19 */
     20
     21/* Default BSG request timeout (in seconds) */
     22#define ISCSI_DEFAULT_BSG_TIMEOUT      (10 * HZ)
     23
     24
     25/*
     26 * Request Message Codes supported by the iSCSI Transport
     27 */
     28
     29/* define the class masks for the message codes */
     30#define ISCSI_BSG_CLS_MASK     0xF0000000      /* find object class */
     31#define ISCSI_BSG_HST_MASK     0x80000000      /* iscsi host class */
     32
     33/* iscsi host Message Codes */
     34#define ISCSI_BSG_HST_VENDOR           (ISCSI_BSG_HST_MASK | 0x000000FF)
     35
     36
     37/*
     38 * iSCSI Host Messages
     39 */
     40
     41/* ISCSI_BSG_HST_VENDOR : */
     42
     43/* Request:
     44 * Note: When specifying vendor_id, be sure to read the Vendor Type and ID
     45 *   formatting requirements specified in scsi_netlink.h
     46 */
     47struct iscsi_bsg_host_vendor {
     48	/*
     49	 * Identifies the vendor that the message is formatted for. This
     50	 * should be the recipient of the message.
     51	 */
     52	uint64_t vendor_id;
     53
     54	/* start of vendor command area */
     55	uint32_t vendor_cmd[];
     56};
     57
     58/* Response:
     59 */
     60struct iscsi_bsg_host_vendor_reply {
     61	/* start of vendor response area */
     62	uint32_t vendor_rsp[0];
     63};
     64
     65
     66/* request (CDB) structure of the sg_io_v4 */
     67struct iscsi_bsg_request {
     68	uint32_t msgcode;
     69	union {
     70		struct iscsi_bsg_host_vendor    h_vendor;
     71	} rqst_data;
     72} __attribute__((packed));
     73
     74
     75/* response (request sense data) structure of the sg_io_v4 */
     76struct iscsi_bsg_reply {
     77	/*
     78	 * The completion result. Result exists in two forms:
     79	 * if negative, it is an -Exxx system errno value. There will
     80	 * be no further reply information supplied.
     81	 * else, it's the 4-byte scsi error result, with driver, host,
     82	 * msg and status fields. The per-msgcode reply structure
     83	 * will contain valid data.
     84	 */
     85	uint32_t result;
     86
     87	/* If there was reply_payload, how much was received ? */
     88	uint32_t reply_payload_rcv_len;
     89
     90	union {
     91		struct iscsi_bsg_host_vendor_reply      vendor_reply;
     92	} reply_data;
     93};
     94
     95
     96#endif /* SCSI_BSG_ISCSI_H */