/* 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[]; }; /* 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 */