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Fixed MTP to work with TWRP

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awab228 2018-06-19 23:16:04 +02:00
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147
include/target/configfs_macros.h Normal file
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/* -*- mode: c; c-basic-offset: 8; -*-
* vim: noexpandtab sw=8 ts=8 sts=0:
*
* configfs_macros.h - extends macros for configfs
*
* 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 021110-1307, USA.
*
* Based on sysfs:
* sysfs is Copyright (C) 2001, 2002, 2003 Patrick Mochel
*
* Based on kobject.h:
* Copyright (c) 2002-2003 Patrick Mochel
* Copyright (c) 2002-2003 Open Source Development Labs
*
* configfs Copyright (C) 2005 Oracle. All rights reserved.
*
* Added CONFIGFS_EATTR() macros from original configfs.h macros
* Copright (C) 2008-2009 Nicholas A. Bellinger <nab@linux-iscsi.org>
*
* Please read Documentation/filesystems/configfs/configfs.txt before using
* the configfs interface, ESPECIALLY the parts about reference counts and
* item destructors.
*/
#ifndef _CONFIGFS_MACROS_H_
#define _CONFIGFS_MACROS_H_
#include <linux/configfs.h>
/*
* Users often need to create attribute structures for their configurable
* attributes, containing a configfs_attribute member and function pointers
* for the show() and store() operations on that attribute. If they don't
* need anything else on the extended attribute structure, they can use
* this macro to define it. The argument _name isends up as
* 'struct _name_attribute, as well as names of to CONFIGFS_ATTR_OPS() below.
* The argument _item is the name of the structure containing the
* struct config_item or struct config_group structure members
*/
#define CONFIGFS_EATTR_STRUCT(_name, _item) \
struct _name##_attribute { \
struct configfs_attribute attr; \
ssize_t (*show)(struct _item *, char *); \
ssize_t (*store)(struct _item *, const char *, size_t); \
}
/*
* With the extended attribute structure, users can use this macro
* (similar to sysfs' __ATTR) to make defining attributes easier.
* An example:
* #define MYITEM_EATTR(_name, _mode, _show, _store) \
* struct myitem_attribute childless_attr_##_name = \
* __CONFIGFS_EATTR(_name, _mode, _show, _store)
*/
#define __CONFIGFS_EATTR(_name, _mode, _show, _store) \
{ \
.attr = { \
.ca_name = __stringify(_name), \
.ca_mode = _mode, \
.ca_owner = THIS_MODULE, \
}, \
.show = _show, \
.store = _store, \
}
/* Here is a readonly version, only requiring a show() operation */
#define __CONFIGFS_EATTR_RO(_name, _show) \
{ \
.attr = { \
.ca_name = __stringify(_name), \
.ca_mode = 0444, \
.ca_owner = THIS_MODULE, \
}, \
.show = _show, \
}
/*
* With these extended attributes, the simple show_attribute() and
* store_attribute() operations need to call the show() and store() of the
* attributes. This is a common pattern, so we provide a macro to define
* them. The argument _name is the name of the attribute defined by
* CONFIGFS_ATTR_STRUCT(). The argument _item is the name of the structure
* containing the struct config_item or struct config_group structure member.
* The argument _item_member is the actual name of the struct config_* struct
* in your _item structure. Meaning my_structure->some_config_group.
* ^^_item^^^^^ ^^_item_member^^^
* This macro expects the attributes to be named "struct <name>_attribute".
*/
#define CONFIGFS_EATTR_OPS_TO_FUNC(_name, _item, _item_member) \
static struct _item *to_##_name(struct config_item *ci) \
{ \
return (ci) ? container_of(to_config_group(ci), struct _item, \
_item_member) : NULL; \
}
#define CONFIGFS_EATTR_OPS_SHOW(_name, _item) \
static ssize_t _name##_attr_show(struct config_item *item, \
struct configfs_attribute *attr, \
char *page) \
{ \
struct _item *_item = to_##_name(item); \
struct _name##_attribute * _name##_attr = \
container_of(attr, struct _name##_attribute, attr); \
ssize_t ret = 0; \
\
if (_name##_attr->show) \
ret = _name##_attr->show(_item, page); \
return ret; \
}
#define CONFIGFS_EATTR_OPS_STORE(_name, _item) \
static ssize_t _name##_attr_store(struct config_item *item, \
struct configfs_attribute *attr, \
const char *page, size_t count) \
{ \
struct _item *_item = to_##_name(item); \
struct _name##_attribute * _name##_attr = \
container_of(attr, struct _name##_attribute, attr); \
ssize_t ret = -EINVAL; \
\
if (_name##_attr->store) \
ret = _name##_attr->store(_item, page, count); \
return ret; \
}
#define CONFIGFS_EATTR_OPS(_name, _item, _item_member) \
CONFIGFS_EATTR_OPS_TO_FUNC(_name, _item, _item_member); \
CONFIGFS_EATTR_OPS_SHOW(_name, _item); \
CONFIGFS_EATTR_OPS_STORE(_name, _item);
#define CONFIGFS_EATTR_OPS_RO(_name, _item, _item_member) \
CONFIGFS_EATTR_OPS_TO_FUNC(_name, _item, _item_member); \
CONFIGFS_EATTR_OPS_SHOW(_name, _item);
#endif /* _CONFIGFS_MACROS_H_ */

104
include/target/iscsi/iscsi_transport.h Normal file
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#include <linux/module.h>
#include <linux/list.h>
#include "../../../drivers/target/iscsi/iscsi_target_core.h"
struct iscsit_transport {
#define ISCSIT_TRANSPORT_NAME 16
char name[ISCSIT_TRANSPORT_NAME];
int transport_type;
int priv_size;
struct module *owner;
struct list_head t_node;
int (*iscsit_setup_np)(struct iscsi_np *, struct __kernel_sockaddr_storage *);
int (*iscsit_accept_np)(struct iscsi_np *, struct iscsi_conn *);
void (*iscsit_free_np)(struct iscsi_np *);
void (*iscsit_wait_conn)(struct iscsi_conn *);
void (*iscsit_free_conn)(struct iscsi_conn *);
int (*iscsit_get_login_rx)(struct iscsi_conn *, struct iscsi_login *);
int (*iscsit_put_login_tx)(struct iscsi_conn *, struct iscsi_login *, u32);
int (*iscsit_immediate_queue)(struct iscsi_conn *, struct iscsi_cmd *, int);
int (*iscsit_response_queue)(struct iscsi_conn *, struct iscsi_cmd *, int);
int (*iscsit_get_dataout)(struct iscsi_conn *, struct iscsi_cmd *, bool);
int (*iscsit_queue_data_in)(struct iscsi_conn *, struct iscsi_cmd *);
int (*iscsit_queue_status)(struct iscsi_conn *, struct iscsi_cmd *);
void (*iscsit_aborted_task)(struct iscsi_conn *, struct iscsi_cmd *);
enum target_prot_op (*iscsit_get_sup_prot_ops)(struct iscsi_conn *);
};
static inline void *iscsit_priv_cmd(struct iscsi_cmd *cmd)
{
return (void *)(cmd + 1);
}
/*
* From iscsi_target_transport.c
*/
extern int iscsit_register_transport(struct iscsit_transport *);
extern void iscsit_unregister_transport(struct iscsit_transport *);
extern struct iscsit_transport *iscsit_get_transport(int);
extern void iscsit_put_transport(struct iscsit_transport *);
/*
* From iscsi_target.c
*/
extern int iscsit_setup_scsi_cmd(struct iscsi_conn *, struct iscsi_cmd *,
unsigned char *);
extern void iscsit_set_unsoliticed_dataout(struct iscsi_cmd *);
extern int iscsit_process_scsi_cmd(struct iscsi_conn *, struct iscsi_cmd *,
struct iscsi_scsi_req *);
extern int iscsit_check_dataout_hdr(struct iscsi_conn *, unsigned char *,
struct iscsi_cmd **);
extern int iscsit_check_dataout_payload(struct iscsi_cmd *, struct iscsi_data *,
bool);
extern int iscsit_setup_nop_out(struct iscsi_conn *, struct iscsi_cmd *,
struct iscsi_nopout *);
extern int iscsit_process_nop_out(struct iscsi_conn *, struct iscsi_cmd *,
struct iscsi_nopout *);
extern int iscsit_handle_logout_cmd(struct iscsi_conn *, struct iscsi_cmd *,
unsigned char *);
extern int iscsit_handle_task_mgt_cmd(struct iscsi_conn *, struct iscsi_cmd *,
unsigned char *);
extern int iscsit_setup_text_cmd(struct iscsi_conn *, struct iscsi_cmd *,
struct iscsi_text *);
extern int iscsit_process_text_cmd(struct iscsi_conn *, struct iscsi_cmd *,
struct iscsi_text *);
extern void iscsit_build_rsp_pdu(struct iscsi_cmd *, struct iscsi_conn *,
bool, struct iscsi_scsi_rsp *);
extern void iscsit_build_nopin_rsp(struct iscsi_cmd *, struct iscsi_conn *,
struct iscsi_nopin *, bool);
extern void iscsit_build_task_mgt_rsp(struct iscsi_cmd *, struct iscsi_conn *,
struct iscsi_tm_rsp *);
extern int iscsit_build_text_rsp(struct iscsi_cmd *, struct iscsi_conn *,
struct iscsi_text_rsp *,
enum iscsit_transport_type);
extern void iscsit_build_reject(struct iscsi_cmd *, struct iscsi_conn *,
struct iscsi_reject *);
extern int iscsit_build_logout_rsp(struct iscsi_cmd *, struct iscsi_conn *,
struct iscsi_logout_rsp *);
extern int iscsit_logout_post_handler(struct iscsi_cmd *, struct iscsi_conn *);
/*
* From iscsi_target_device.c
*/
extern void iscsit_increment_maxcmdsn(struct iscsi_cmd *, struct iscsi_session *);
/*
* From iscsi_target_erl0.c
*/
extern void iscsit_cause_connection_reinstatement(struct iscsi_conn *, int);
/*
* From iscsi_target_erl1.c
*/
extern void iscsit_stop_dataout_timer(struct iscsi_cmd *);
/*
* From iscsi_target_tmr.c
*/
extern int iscsit_tmr_post_handler(struct iscsi_cmd *, struct iscsi_conn *);
/*
* From iscsi_target_util.c
*/
extern struct iscsi_cmd *iscsit_allocate_cmd(struct iscsi_conn *, int);
extern int iscsit_sequence_cmd(struct iscsi_conn *, struct iscsi_cmd *,
unsigned char *, __be32);
extern void iscsit_release_cmd(struct iscsi_cmd *);

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#ifndef TARGET_CORE_BACKEND_H
#define TARGET_CORE_BACKEND_H
#define TRANSPORT_PLUGIN_PHBA_PDEV 1
#define TRANSPORT_PLUGIN_VHBA_PDEV 2
#define TRANSPORT_PLUGIN_VHBA_VDEV 3
struct se_subsystem_api {
struct list_head sub_api_list;
char name[16];
char inquiry_prod[16];
char inquiry_rev[4];
struct module *owner;
u8 transport_type;
int (*attach_hba)(struct se_hba *, u32);
void (*detach_hba)(struct se_hba *);
int (*pmode_enable_hba)(struct se_hba *, unsigned long);
struct se_device *(*alloc_device)(struct se_hba *, const char *);
int (*configure_device)(struct se_device *);
void (*free_device)(struct se_device *device);
ssize_t (*set_configfs_dev_params)(struct se_device *,
const char *, ssize_t);
ssize_t (*show_configfs_dev_params)(struct se_device *, char *);
void (*transport_complete)(struct se_cmd *cmd,
struct scatterlist *,
unsigned char *);
sense_reason_t (*parse_cdb)(struct se_cmd *cmd);
u32 (*get_device_type)(struct se_device *);
sector_t (*get_blocks)(struct se_device *);
sector_t (*get_alignment_offset_lbas)(struct se_device *);
/* lbppbe = logical blocks per physical block exponent. see SBC-3 */
unsigned int (*get_lbppbe)(struct se_device *);
unsigned int (*get_io_min)(struct se_device *);
unsigned int (*get_io_opt)(struct se_device *);
unsigned char *(*get_sense_buffer)(struct se_cmd *);
bool (*get_write_cache)(struct se_device *);
int (*init_prot)(struct se_device *);
int (*format_prot)(struct se_device *);
void (*free_prot)(struct se_device *);
};
struct sbc_ops {
sense_reason_t (*execute_rw)(struct se_cmd *cmd, struct scatterlist *,
u32, enum dma_data_direction);
sense_reason_t (*execute_sync_cache)(struct se_cmd *cmd);
sense_reason_t (*execute_write_same)(struct se_cmd *cmd);
sense_reason_t (*execute_write_same_unmap)(struct se_cmd *cmd);
sense_reason_t (*execute_unmap)(struct se_cmd *cmd);
};
int transport_subsystem_register(struct se_subsystem_api *);
void transport_subsystem_release(struct se_subsystem_api *);
void target_complete_cmd(struct se_cmd *, u8);
void target_complete_cmd_with_length(struct se_cmd *, u8, int);
sense_reason_t spc_parse_cdb(struct se_cmd *cmd, unsigned int *size);
sense_reason_t spc_emulate_report_luns(struct se_cmd *cmd);
sense_reason_t spc_emulate_inquiry_std(struct se_cmd *, unsigned char *);
sense_reason_t spc_emulate_evpd_83(struct se_cmd *, unsigned char *);
sense_reason_t sbc_parse_cdb(struct se_cmd *cmd, struct sbc_ops *ops);
u32 sbc_get_device_rev(struct se_device *dev);
u32 sbc_get_device_type(struct se_device *dev);
sector_t sbc_get_write_same_sectors(struct se_cmd *cmd);
sense_reason_t sbc_execute_unmap(struct se_cmd *cmd,
sense_reason_t (*do_unmap_fn)(struct se_cmd *cmd, void *priv,
sector_t lba, sector_t nolb),
void *priv);
void sbc_dif_generate(struct se_cmd *);
sense_reason_t sbc_dif_verify_write(struct se_cmd *, sector_t, unsigned int,
unsigned int, struct scatterlist *, int);
sense_reason_t sbc_dif_verify_read(struct se_cmd *, sector_t, unsigned int,
unsigned int, struct scatterlist *, int);
sense_reason_t sbc_dif_read_strip(struct se_cmd *);
void transport_set_vpd_proto_id(struct t10_vpd *, unsigned char *);
int transport_set_vpd_assoc(struct t10_vpd *, unsigned char *);
int transport_set_vpd_ident_type(struct t10_vpd *, unsigned char *);
int transport_set_vpd_ident(struct t10_vpd *, unsigned char *);
/* core helpers also used by command snooping in pscsi */
void *transport_kmap_data_sg(struct se_cmd *);
void transport_kunmap_data_sg(struct se_cmd *);
/* core helpers also used by xcopy during internal command setup */
int target_alloc_sgl(struct scatterlist **, unsigned int *, u32, bool);
sense_reason_t transport_generic_map_mem_to_cmd(struct se_cmd *,
struct scatterlist *, u32, struct scatterlist *, u32);
void array_free(void *array, int n);
#endif /* TARGET_CORE_BACKEND_H */

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#ifndef TARGET_CORE_BASE_H
#define TARGET_CORE_BASE_H
#include <linux/in.h>
#include <linux/configfs.h>
#include <linux/dma-mapping.h>
#include <linux/blkdev.h>
#include <linux/percpu_ida.h>
#include <scsi/scsi_cmnd.h>
#include <net/sock.h>
#include <net/tcp.h>
#define TARGET_CORE_MOD_VERSION "v4.1.0"
#define TARGET_CORE_VERSION TARGET_CORE_MOD_VERSION
/* Maximum Number of LUNs per Target Portal Group */
/* Don't raise above 511 or REPORT_LUNS needs to handle >1 page */
#define TRANSPORT_MAX_LUNS_PER_TPG 256
/*
* By default we use 32-byte CDBs in TCM Core and subsystem plugin code.
*
* Note that both include/scsi/scsi_cmnd.h:MAX_COMMAND_SIZE and
* include/linux/blkdev.h:BLOCK_MAX_CDB as of v2.6.36-rc4 still use
* 16-byte CDBs by default and require an extra allocation for
* 32-byte CDBs to because of legacy issues.
*
* Within TCM Core there are no such legacy limitiations, so we go ahead
* use 32-byte CDBs by default and use include/scsi/scsi.h:scsi_command_size()
* within all TCM Core and subsystem plugin code.
*/
#define TCM_MAX_COMMAND_SIZE 32
/*
* From include/scsi/scsi_cmnd.h:SCSI_SENSE_BUFFERSIZE, currently
* defined 96, but the real limit is 252 (or 260 including the header)
*/
#define TRANSPORT_SENSE_BUFFER SCSI_SENSE_BUFFERSIZE
/* Used by transport_send_check_condition_and_sense() */
#define SPC_SENSE_KEY_OFFSET 2
#define SPC_ADD_SENSE_LEN_OFFSET 7
#define SPC_DESC_TYPE_OFFSET 8
#define SPC_ADDITIONAL_DESC_LEN_OFFSET 9
#define SPC_VALIDITY_OFFSET 10
#define SPC_ASC_KEY_OFFSET 12
#define SPC_ASCQ_KEY_OFFSET 13
#define TRANSPORT_IQN_LEN 224
/* Used by target_core_store_alua_lu_gp() and target_core_alua_lu_gp_show_attr_members() */
#define LU_GROUP_NAME_BUF 256
/* Used by core_alua_store_tg_pt_gp_info() and target_core_alua_tg_pt_gp_show_attr_members() */
#define TG_PT_GROUP_NAME_BUF 256
/* Used to parse VPD into struct t10_vpd */
#define VPD_TMP_BUF_SIZE 254
/* Used by transport_generic_cmd_sequencer() */
#define READ_BLOCK_LEN 6
#define READ_CAP_LEN 8
#define READ_POSITION_LEN 20
#define INQUIRY_LEN 36
/* Used by transport_get_inquiry_vpd_serial() */
#define INQUIRY_VPD_SERIAL_LEN 254
/* Used by transport_get_inquiry_vpd_device_ident() */
#define INQUIRY_VPD_DEVICE_IDENTIFIER_LEN 254
/* Attempts before moving from SHORT to LONG */
#define PYX_TRANSPORT_WINDOW_CLOSED_THRESHOLD 3
#define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_SHORT 3 /* In milliseconds */
#define PYX_TRANSPORT_WINDOW_CLOSED_WAIT_LONG 10 /* In milliseconds */
#define PYX_TRANSPORT_STATUS_INTERVAL 5 /* In seconds */
/* struct se_dev_attrib sanity values */
/* Default max_unmap_lba_count */
#define DA_MAX_UNMAP_LBA_COUNT 0
/* Default max_unmap_block_desc_count */
#define DA_MAX_UNMAP_BLOCK_DESC_COUNT 0
/* Default unmap_granularity */
#define DA_UNMAP_GRANULARITY_DEFAULT 0
/* Default unmap_granularity_alignment */
#define DA_UNMAP_GRANULARITY_ALIGNMENT_DEFAULT 0
/* Default max_write_same_len, disabled by default */
#define DA_MAX_WRITE_SAME_LEN 0
/* Default max transfer length */
#define DA_FABRIC_MAX_SECTORS 8192
/* Use a model alias based on the configfs backend device name */
#define DA_EMULATE_MODEL_ALIAS 0
/* Emulation for Direct Page Out */
#define DA_EMULATE_DPO 0
/* Emulation for Forced Unit Access WRITEs */
#define DA_EMULATE_FUA_WRITE 1
/* Emulation for Forced Unit Access READs */
#define DA_EMULATE_FUA_READ 0
/* Emulation for WriteCache and SYNCHRONIZE_CACHE */
#define DA_EMULATE_WRITE_CACHE 0
/* Emulation for UNIT ATTENTION Interlock Control */
#define DA_EMULATE_UA_INTLLCK_CTRL 0
/* Emulation for TASK_ABORTED status (TAS) by default */
#define DA_EMULATE_TAS 1
/* Emulation for Thin Provisioning UNMAP using block/blk-lib.c:blkdev_issue_discard() */
#define DA_EMULATE_TPU 0
/*
* Emulation for Thin Provisioning WRITE_SAME w/ UNMAP=1 bit using
* block/blk-lib.c:blkdev_issue_discard()
*/
#define DA_EMULATE_TPWS 0
/* Emulation for CompareAndWrite (AtomicTestandSet) by default */
#define DA_EMULATE_CAW 1
/* Emulation for 3rd Party Copy (ExtendedCopy) by default */
#define DA_EMULATE_3PC 1
/* No Emulation for PSCSI by default */
#define DA_EMULATE_ALUA 0
/* Enforce SCSI Initiator Port TransportID with 'ISID' for PR */
#define DA_ENFORCE_PR_ISIDS 1
/* Force SPC-3 PR Activate Persistence across Target Power Loss */
#define DA_FORCE_PR_APTPL 0
#define DA_STATUS_MAX_SECTORS_MIN 16
#define DA_STATUS_MAX_SECTORS_MAX 8192
/* By default don't report non-rotating (solid state) medium */
#define DA_IS_NONROT 0
/* Queue Algorithm Modifier default for restricted reordering in control mode page */
#define DA_EMULATE_REST_REORD 0
#define SE_INQUIRY_BUF 1024
#define SE_MODE_PAGE_BUF 512
#define SE_SENSE_BUF 96
/* struct se_hba->hba_flags */
enum hba_flags_table {
HBA_FLAGS_INTERNAL_USE = 0x01,
HBA_FLAGS_PSCSI_MODE = 0x02,
};
/* struct se_lun->lun_status */
enum transport_lun_status_table {
TRANSPORT_LUN_STATUS_FREE = 0,
TRANSPORT_LUN_STATUS_ACTIVE = 1,
};
/* struct se_portal_group->se_tpg_type */
enum transport_tpg_type_table {
TRANSPORT_TPG_TYPE_NORMAL = 0,
TRANSPORT_TPG_TYPE_DISCOVERY = 1,
};
/* Special transport agnostic struct se_cmd->t_states */
enum transport_state_table {
TRANSPORT_NO_STATE = 0,
TRANSPORT_NEW_CMD = 1,
TRANSPORT_WRITE_PENDING = 3,
TRANSPORT_PROCESSING = 5,
TRANSPORT_COMPLETE = 6,
TRANSPORT_ISTATE_PROCESSING = 11,
TRANSPORT_COMPLETE_QF_WP = 18,
TRANSPORT_COMPLETE_QF_OK = 19,
};
/* Used for struct se_cmd->se_cmd_flags */
enum se_cmd_flags_table {
SCF_SUPPORTED_SAM_OPCODE = 0x00000001,
SCF_TRANSPORT_TASK_SENSE = 0x00000002,
SCF_EMULATED_TASK_SENSE = 0x00000004,
SCF_SCSI_DATA_CDB = 0x00000008,
SCF_SCSI_TMR_CDB = 0x00000010,
SCF_FUA = 0x00000080,
SCF_SE_LUN_CMD = 0x00000100,
SCF_BIDI = 0x00000400,
SCF_SENT_CHECK_CONDITION = 0x00000800,
SCF_OVERFLOW_BIT = 0x00001000,
SCF_UNDERFLOW_BIT = 0x00002000,
SCF_SEND_DELAYED_TAS = 0x00004000,
SCF_ALUA_NON_OPTIMIZED = 0x00008000,
SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC = 0x00020000,
SCF_ACK_KREF = 0x00040000,
SCF_COMPARE_AND_WRITE = 0x00080000,
SCF_COMPARE_AND_WRITE_POST = 0x00100000,
SCF_CMD_XCOPY_PASSTHROUGH = 0x00200000,
};
/* struct se_dev_entry->lun_flags and struct se_lun->lun_access */
enum transport_lunflags_table {
TRANSPORT_LUNFLAGS_NO_ACCESS = 0x00,
TRANSPORT_LUNFLAGS_INITIATOR_ACCESS = 0x01,
TRANSPORT_LUNFLAGS_READ_ONLY = 0x02,
TRANSPORT_LUNFLAGS_READ_WRITE = 0x04,
};
/*
* Used by transport_send_check_condition_and_sense()
* to signal which ASC/ASCQ sense payload should be built.
*/
typedef unsigned __bitwise__ sense_reason_t;
enum tcm_sense_reason_table {
#define R(x) (__force sense_reason_t )(x)
TCM_NO_SENSE = R(0x00),
TCM_NON_EXISTENT_LUN = R(0x01),
TCM_UNSUPPORTED_SCSI_OPCODE = R(0x02),
TCM_INCORRECT_AMOUNT_OF_DATA = R(0x03),
TCM_UNEXPECTED_UNSOLICITED_DATA = R(0x04),
TCM_SERVICE_CRC_ERROR = R(0x05),
TCM_SNACK_REJECTED = R(0x06),
TCM_SECTOR_COUNT_TOO_MANY = R(0x07),
TCM_INVALID_CDB_FIELD = R(0x08),
TCM_INVALID_PARAMETER_LIST = R(0x09),
TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE = R(0x0a),
TCM_UNKNOWN_MODE_PAGE = R(0x0b),
TCM_WRITE_PROTECTED = R(0x0c),
TCM_CHECK_CONDITION_ABORT_CMD = R(0x0d),
TCM_CHECK_CONDITION_UNIT_ATTENTION = R(0x0e),
TCM_CHECK_CONDITION_NOT_READY = R(0x0f),
TCM_RESERVATION_CONFLICT = R(0x10),
TCM_ADDRESS_OUT_OF_RANGE = R(0x11),
TCM_OUT_OF_RESOURCES = R(0x12),
TCM_PARAMETER_LIST_LENGTH_ERROR = R(0x13),
TCM_MISCOMPARE_VERIFY = R(0x14),
TCM_LOGICAL_BLOCK_GUARD_CHECK_FAILED = R(0x15),
TCM_LOGICAL_BLOCK_APP_TAG_CHECK_FAILED = R(0x16),
TCM_LOGICAL_BLOCK_REF_TAG_CHECK_FAILED = R(0x17),
#undef R
};
enum target_sc_flags_table {
TARGET_SCF_BIDI_OP = 0x01,
TARGET_SCF_ACK_KREF = 0x02,
TARGET_SCF_UNKNOWN_SIZE = 0x04,
};
/* fabric independent task management function values */
enum tcm_tmreq_table {
TMR_ABORT_TASK = 1,
TMR_ABORT_TASK_SET = 2,
TMR_CLEAR_ACA = 3,
TMR_CLEAR_TASK_SET = 4,
TMR_LUN_RESET = 5,
TMR_TARGET_WARM_RESET = 6,
TMR_TARGET_COLD_RESET = 7,
};
/* fabric independent task management response values */
enum tcm_tmrsp_table {
TMR_FUNCTION_FAILED = 0,
TMR_FUNCTION_COMPLETE = 1,
TMR_TASK_DOES_NOT_EXIST = 2,
TMR_LUN_DOES_NOT_EXIST = 3,
TMR_TASK_MGMT_FUNCTION_NOT_SUPPORTED = 4,
TMR_FUNCTION_REJECTED = 5,
};
/*
* Used for target SCSI statistics
*/
typedef enum {
SCSI_INST_INDEX,
SCSI_DEVICE_INDEX,
SCSI_AUTH_INTR_INDEX,
SCSI_INDEX_TYPE_MAX
} scsi_index_t;
struct se_cmd;
struct t10_alua_lba_map_member {
struct list_head lba_map_mem_list;
int lba_map_mem_alua_state;
int lba_map_mem_alua_pg_id;
};
struct t10_alua_lba_map {
u64 lba_map_first_lba;
u64 lba_map_last_lba;
struct list_head lba_map_list;
struct list_head lba_map_mem_list;
};
struct t10_alua {
/* ALUA Target Port Group ID */
u16 alua_tg_pt_gps_counter;
u32 alua_tg_pt_gps_count;
/* Referrals support */
spinlock_t lba_map_lock;
u32 lba_map_segment_size;
u32 lba_map_segment_multiplier;
struct list_head lba_map_list;
spinlock_t tg_pt_gps_lock;
struct se_device *t10_dev;
/* Used for default ALUA Target Port Group */
struct t10_alua_tg_pt_gp *default_tg_pt_gp;
/* Used for default ALUA Target Port Group ConfigFS group */
struct config_group alua_tg_pt_gps_group;
struct list_head tg_pt_gps_list;
};
struct t10_alua_lu_gp {
u16 lu_gp_id;
int lu_gp_valid_id;
u32 lu_gp_members;
atomic_t lu_gp_ref_cnt;
spinlock_t lu_gp_lock;
struct config_group lu_gp_group;
struct list_head lu_gp_node;
struct list_head lu_gp_mem_list;
};
struct t10_alua_lu_gp_member {
bool lu_gp_assoc;
atomic_t lu_gp_mem_ref_cnt;
spinlock_t lu_gp_mem_lock;
struct t10_alua_lu_gp *lu_gp;
struct se_device *lu_gp_mem_dev;
struct list_head lu_gp_mem_list;
};
struct t10_alua_tg_pt_gp {
u16 tg_pt_gp_id;
int tg_pt_gp_valid_id;
int tg_pt_gp_alua_supported_states;
int tg_pt_gp_alua_pending_state;
int tg_pt_gp_alua_previous_state;
int tg_pt_gp_alua_access_status;
int tg_pt_gp_alua_access_type;
int tg_pt_gp_nonop_delay_msecs;
int tg_pt_gp_trans_delay_msecs;
int tg_pt_gp_implicit_trans_secs;
int tg_pt_gp_pref;
int tg_pt_gp_write_metadata;
u32 tg_pt_gp_members;
atomic_t tg_pt_gp_alua_access_state;
atomic_t tg_pt_gp_ref_cnt;
spinlock_t tg_pt_gp_lock;
struct mutex tg_pt_gp_md_mutex;
struct se_device *tg_pt_gp_dev;
struct config_group tg_pt_gp_group;
struct list_head tg_pt_gp_list;
struct list_head tg_pt_gp_mem_list;
struct se_port *tg_pt_gp_alua_port;
struct se_node_acl *tg_pt_gp_alua_nacl;
struct delayed_work tg_pt_gp_transition_work;
struct completion *tg_pt_gp_transition_complete;
};
struct t10_alua_tg_pt_gp_member {
bool tg_pt_gp_assoc;
atomic_t tg_pt_gp_mem_ref_cnt;
spinlock_t tg_pt_gp_mem_lock;
struct t10_alua_tg_pt_gp *tg_pt_gp;
struct se_port *tg_pt;
struct list_head tg_pt_gp_mem_list;
};
struct t10_vpd {
unsigned char device_identifier[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN];
int protocol_identifier_set;
u32 protocol_identifier;
u32 device_identifier_code_set;
u32 association;
u32 device_identifier_type;
struct list_head vpd_list;
};
struct t10_wwn {
char vendor[8];
char model[16];
char revision[4];
char unit_serial[INQUIRY_VPD_SERIAL_LEN];
spinlock_t t10_vpd_lock;
struct se_device *t10_dev;
struct config_group t10_wwn_group;
struct list_head t10_vpd_list;
};
struct t10_pr_registration {
/* Used for fabrics that contain WWN+ISID */
#define PR_REG_ISID_LEN 16
/* PR_REG_ISID_LEN + ',i,0x' */
#define PR_REG_ISID_ID_LEN (PR_REG_ISID_LEN + 5)
char pr_reg_isid[PR_REG_ISID_LEN];
/* Used during APTPL metadata reading */
#define PR_APTPL_MAX_IPORT_LEN 256
unsigned char pr_iport[PR_APTPL_MAX_IPORT_LEN];
/* Used during APTPL metadata reading */
#define PR_APTPL_MAX_TPORT_LEN 256
unsigned char pr_tport[PR_APTPL_MAX_TPORT_LEN];
u16 pr_aptpl_rpti;
u16 pr_reg_tpgt;
/* Reservation effects all target ports */
int pr_reg_all_tg_pt;
/* Activate Persistence across Target Power Loss */
int pr_reg_aptpl;
int pr_res_holder;
int pr_res_type;
int pr_res_scope;
/* Used for fabric initiator WWPNs using a ISID */
bool isid_present_at_reg;
u32 pr_res_mapped_lun;
u32 pr_aptpl_target_lun;
u32 pr_res_generation;
u64 pr_reg_bin_isid;
u64 pr_res_key;
atomic_t pr_res_holders;
struct se_node_acl *pr_reg_nacl;
struct se_dev_entry *pr_reg_deve;
struct se_lun *pr_reg_tg_pt_lun;
struct list_head pr_reg_list;
struct list_head pr_reg_abort_list;
struct list_head pr_reg_aptpl_list;
struct list_head pr_reg_atp_list;
struct list_head pr_reg_atp_mem_list;
};
struct t10_reservation {
/* Reservation effects all target ports */
int pr_all_tg_pt;
/* Activate Persistence across Target Power Loss enabled
* for SCSI device */
int pr_aptpl_active;
#define PR_APTPL_BUF_LEN 262144
u32 pr_generation;
spinlock_t registration_lock;
spinlock_t aptpl_reg_lock;
/*
* This will always be set by one individual I_T Nexus.
* However with all_tg_pt=1, other I_T Nexus from the
* same initiator can access PR reg/res info on a different
* target port.
*
* There is also the 'All Registrants' case, where there is
* a single *pr_res_holder of the reservation, but all
* registrations are considered reservation holders.
*/
struct se_node_acl *pr_res_holder;
struct list_head registration_list;
struct list_head aptpl_reg_list;
};
struct se_tmr_req {
/* Task Management function to be performed */
u8 function;
/* Task Management response to send */
u8 response;
int call_transport;
/* Reference to ITT that Task Mgmt should be performed */
u32 ref_task_tag;
void *fabric_tmr_ptr;
struct se_cmd *task_cmd;
struct se_device *tmr_dev;
struct se_lun *tmr_lun;
struct list_head tmr_list;
};
enum target_prot_op {
TARGET_PROT_NORMAL = 0,
TARGET_PROT_DIN_INSERT = (1 << 0),
TARGET_PROT_DOUT_INSERT = (1 << 1),
TARGET_PROT_DIN_STRIP = (1 << 2),
TARGET_PROT_DOUT_STRIP = (1 << 3),
TARGET_PROT_DIN_PASS = (1 << 4),
TARGET_PROT_DOUT_PASS = (1 << 5),
};
#define TARGET_PROT_ALL TARGET_PROT_DIN_INSERT | TARGET_PROT_DOUT_INSERT | \
TARGET_PROT_DIN_STRIP | TARGET_PROT_DOUT_STRIP | \
TARGET_PROT_DIN_PASS | TARGET_PROT_DOUT_PASS
enum target_prot_type {
TARGET_DIF_TYPE0_PROT,
TARGET_DIF_TYPE1_PROT,
TARGET_DIF_TYPE2_PROT,
TARGET_DIF_TYPE3_PROT,
};
enum target_core_dif_check {
TARGET_DIF_CHECK_GUARD = 0x1 << 0,
TARGET_DIF_CHECK_APPTAG = 0x1 << 1,
TARGET_DIF_CHECK_REFTAG = 0x1 << 2,
};
struct se_dif_v1_tuple {
__be16 guard_tag;
__be16 app_tag;
__be32 ref_tag;
};
struct se_cmd {
/* SAM response code being sent to initiator */
u8 scsi_status;
u8 scsi_asc;
u8 scsi_ascq;
u16 scsi_sense_length;
/* Delay for ALUA Active/NonOptimized state access in milliseconds */
int alua_nonop_delay;
/* See include/linux/dma-mapping.h */
enum dma_data_direction data_direction;
/* For SAM Task Attribute */
int sam_task_attr;
/* Used for se_sess->sess_tag_pool */
unsigned int map_tag;
/* Transport protocol dependent state, see transport_state_table */
enum transport_state_table t_state;
unsigned cmd_wait_set:1;
unsigned unknown_data_length:1;
/* See se_cmd_flags_table */
u32 se_cmd_flags;
u32 se_ordered_id;
/* Total size in bytes associated with command */
u32 data_length;
u32 residual_count;
u32 orig_fe_lun;
/* Persistent Reservation key */
u64 pr_res_key;
/* Used for sense data */
void *sense_buffer;
struct list_head se_delayed_node;
struct list_head se_qf_node;
struct se_device *se_dev;
struct se_dev_entry *se_deve;
struct se_lun *se_lun;
/* Only used for internal passthrough and legacy TCM fabric modules */
struct se_session *se_sess;
struct se_tmr_req *se_tmr_req;
struct list_head se_cmd_list;
struct completion cmd_wait_comp;
struct kref cmd_kref;
struct target_core_fabric_ops *se_tfo;
sense_reason_t (*execute_cmd)(struct se_cmd *);
sense_reason_t (*execute_rw)(struct se_cmd *, struct scatterlist *,
u32, enum dma_data_direction);
sense_reason_t (*transport_complete_callback)(struct se_cmd *, bool);
unsigned char *t_task_cdb;
unsigned char __t_task_cdb[TCM_MAX_COMMAND_SIZE];
unsigned long long t_task_lba;
unsigned int t_task_nolb;
unsigned int transport_state;
#define CMD_T_ABORTED (1 << 0)
#define CMD_T_ACTIVE (1 << 1)
#define CMD_T_COMPLETE (1 << 2)
#define CMD_T_SENT (1 << 4)
#define CMD_T_STOP (1 << 5)
#define CMD_T_DEV_ACTIVE (1 << 7)
#define CMD_T_REQUEST_STOP (1 << 8)
#define CMD_T_BUSY (1 << 9)
spinlock_t t_state_lock;
struct completion t_transport_stop_comp;
struct work_struct work;
struct scatterlist *t_data_sg;
struct scatterlist *t_data_sg_orig;
unsigned int t_data_nents;
unsigned int t_data_nents_orig;
void *t_data_vmap;
struct scatterlist *t_bidi_data_sg;
unsigned int t_bidi_data_nents;
struct list_head state_list;
bool state_active;
/* old task stop completion, consider merging with some of the above */
struct completion task_stop_comp;
/* backend private data */
void *priv;
/* Used for lun->lun_ref counting */
int lun_ref_active;
/* DIF related members */
enum target_prot_op prot_op;
enum target_prot_type prot_type;
u8 prot_checks;
u32 prot_length;
u32 reftag_seed;
struct scatterlist *t_prot_sg;
unsigned int t_prot_nents;
sense_reason_t pi_err;
sector_t bad_sector;
bool prot_pto;
};
struct se_ua {
u8 ua_asc;
u8 ua_ascq;
struct se_node_acl *ua_nacl;
struct list_head ua_nacl_list;
};
struct se_node_acl {
char initiatorname[TRANSPORT_IQN_LEN];
/* Used to signal demo mode created ACL, disabled by default */
bool dynamic_node_acl;
bool acl_stop:1;
u32 queue_depth;
u32 acl_index;
#define MAX_ACL_TAG_SIZE 64
char acl_tag[MAX_ACL_TAG_SIZE];
/* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
atomic_t acl_pr_ref_count;
struct se_dev_entry **device_list;
struct se_session *nacl_sess;
struct se_portal_group *se_tpg;
spinlock_t device_list_lock;
spinlock_t nacl_sess_lock;
struct config_group acl_group;
struct config_group acl_attrib_group;
struct config_group acl_auth_group;
struct config_group acl_param_group;
struct config_group acl_fabric_stat_group;
struct config_group *acl_default_groups[5];
struct list_head acl_list;
struct list_head acl_sess_list;
struct completion acl_free_comp;
struct kref acl_kref;
};
struct se_session {
unsigned sess_tearing_down:1;
u64 sess_bin_isid;
enum target_prot_op sup_prot_ops;
struct se_node_acl *se_node_acl;
struct se_portal_group *se_tpg;
void *fabric_sess_ptr;
struct list_head sess_list;
struct list_head sess_acl_list;
struct list_head sess_cmd_list;
struct list_head sess_wait_list;
spinlock_t sess_cmd_lock;
struct kref sess_kref;
void *sess_cmd_map;
struct percpu_ida sess_tag_pool;
};
struct se_device;
struct se_transform_info;
struct scatterlist;
struct se_ml_stat_grps {
struct config_group stat_group;
struct config_group scsi_auth_intr_group;
struct config_group scsi_att_intr_port_group;
};
struct se_lun_acl {
char initiatorname[TRANSPORT_IQN_LEN];
u32 mapped_lun;
struct se_node_acl *se_lun_nacl;
struct se_lun *se_lun;
struct list_head lacl_list;
struct config_group se_lun_group;
struct se_ml_stat_grps ml_stat_grps;
};
struct se_dev_entry {
bool def_pr_registered;
/* See transport_lunflags_table */
u32 lun_flags;
u32 mapped_lun;
u32 total_cmds;
u64 pr_res_key;
u64 creation_time;
u32 attach_count;
u64 read_bytes;
u64 write_bytes;
atomic_t ua_count;
/* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
atomic_t pr_ref_count;
struct se_lun_acl *se_lun_acl;
spinlock_t ua_lock;
struct se_lun *se_lun;
struct list_head alua_port_list;
struct list_head ua_list;
};
struct se_dev_attrib {
int emulate_model_alias;
int emulate_dpo;
int emulate_fua_write;
int emulate_fua_read;
int emulate_write_cache;
int emulate_ua_intlck_ctrl;
int emulate_tas;
int emulate_tpu;
int emulate_tpws;
int emulate_caw;
int emulate_3pc;
int pi_prot_format;
enum target_prot_type pi_prot_type;
enum target_prot_type hw_pi_prot_type;
int enforce_pr_isids;
int force_pr_aptpl;
int is_nonrot;
int emulate_rest_reord;
u32 hw_block_size;
u32 block_size;
u32 hw_max_sectors;
u32 fabric_max_sectors;
u32 optimal_sectors;
u32 hw_queue_depth;
u32 queue_depth;
u32 max_unmap_lba_count;
u32 max_unmap_block_desc_count;
u32 unmap_granularity;
u32 unmap_granularity_alignment;
u32 max_write_same_len;
u32 max_bytes_per_io;
struct se_device *da_dev;
struct config_group da_group;
};
struct se_port_stat_grps {
struct config_group stat_group;
struct config_group scsi_port_group;
struct config_group scsi_tgt_port_group;
struct config_group scsi_transport_group;
};
struct se_lun {
#define SE_LUN_LINK_MAGIC 0xffff7771
u32 lun_link_magic;
/* See transport_lun_status_table */
enum transport_lun_status_table lun_status;
u32 lun_access;
u32 lun_flags;
u32 unpacked_lun;
atomic_t lun_acl_count;
spinlock_t lun_acl_lock;
spinlock_t lun_sep_lock;
struct completion lun_shutdown_comp;
struct list_head lun_acl_list;
struct se_device *lun_se_dev;
struct se_port *lun_sep;
struct config_group lun_group;
struct se_port_stat_grps port_stat_grps;
struct completion lun_ref_comp;
struct percpu_ref lun_ref;
};
struct se_dev_stat_grps {
struct config_group stat_group;
struct config_group scsi_dev_group;
struct config_group scsi_tgt_dev_group;
struct config_group scsi_lu_group;
};
struct se_device {
#define SE_DEV_LINK_MAGIC 0xfeeddeef
u32 dev_link_magic;
/* RELATIVE TARGET PORT IDENTIFER Counter */
u16 dev_rpti_counter;
/* Used for SAM Task Attribute ordering */
u32 dev_cur_ordered_id;
u32 dev_flags;
#define DF_CONFIGURED 0x00000001
#define DF_FIRMWARE_VPD_UNIT_SERIAL 0x00000002
#define DF_EMULATED_VPD_UNIT_SERIAL 0x00000004
#define DF_USING_UDEV_PATH 0x00000008
#define DF_USING_ALIAS 0x00000010
u32 dev_port_count;
/* Physical device queue depth */
u32 queue_depth;
/* Used for SPC-2 reservations enforce of ISIDs */
u64 dev_res_bin_isid;
/* Pointer to transport specific device structure */
u32 dev_index;
u64 creation_time;
atomic_long_t num_resets;
atomic_long_t num_cmds;
atomic_long_t read_bytes;
atomic_long_t write_bytes;
/* Active commands on this virtual SE device */
atomic_t simple_cmds;
atomic_t dev_ordered_id;
atomic_t dev_ordered_sync;
atomic_t dev_qf_count;
int export_count;
spinlock_t delayed_cmd_lock;
spinlock_t execute_task_lock;
spinlock_t dev_reservation_lock;
unsigned int dev_reservation_flags;
#define DRF_SPC2_RESERVATIONS 0x00000001
#define DRF_SPC2_RESERVATIONS_WITH_ISID 0x00000002
spinlock_t se_port_lock;
spinlock_t se_tmr_lock;
spinlock_t qf_cmd_lock;
struct semaphore caw_sem;
/* Used for legacy SPC-2 reservationsa */
struct se_node_acl *dev_reserved_node_acl;
/* Used for ALUA Logical Unit Group membership */
struct t10_alua_lu_gp_member *dev_alua_lu_gp_mem;
/* Used for SPC-3 Persistent Reservations */
struct t10_pr_registration *dev_pr_res_holder;
struct list_head dev_sep_list;
struct list_head dev_tmr_list;
struct workqueue_struct *tmr_wq;
struct work_struct qf_work_queue;
struct list_head delayed_cmd_list;
struct list_head state_list;
struct list_head qf_cmd_list;
struct list_head g_dev_node;
/* Pointer to associated SE HBA */
struct se_hba *se_hba;
/* T10 Inquiry and VPD WWN Information */
struct t10_wwn t10_wwn;
/* T10 Asymmetric Logical Unit Assignment for Target Ports */
struct t10_alua t10_alua;
/* T10 SPC-2 + SPC-3 Reservations */
struct t10_reservation t10_pr;
struct se_dev_attrib dev_attrib;
struct config_group dev_group;
struct config_group dev_pr_group;
struct se_dev_stat_grps dev_stat_grps;
#define SE_DEV_ALIAS_LEN 512 /* must be less than PAGE_SIZE */
unsigned char dev_alias[SE_DEV_ALIAS_LEN];
#define SE_UDEV_PATH_LEN 512 /* must be less than PAGE_SIZE */
unsigned char udev_path[SE_UDEV_PATH_LEN];
/* Pointer to template of function pointers for transport */
struct se_subsystem_api *transport;
/* Linked list for struct se_hba struct se_device list */
struct list_head dev_list;
struct se_lun xcopy_lun;
/* Protection Information */
int prot_length;
};
struct se_hba {
u16 hba_tpgt;
u32 hba_id;
/* See hba_flags_table */
u32 hba_flags;
/* Virtual iSCSI devices attached. */
u32 dev_count;
u32 hba_index;
/* Pointer to transport specific host structure. */
void *hba_ptr;
struct list_head hba_node;
spinlock_t device_lock;
struct config_group hba_group;
struct mutex hba_access_mutex;
struct se_subsystem_api *transport;
};
struct scsi_port_stats {
u64 cmd_pdus;
u64 tx_data_octets;
u64 rx_data_octets;
};
struct se_port {
/* RELATIVE TARGET PORT IDENTIFER */
u16 sep_rtpi;
int sep_tg_pt_secondary_stat;
int sep_tg_pt_secondary_write_md;
u32 sep_index;
struct scsi_port_stats sep_stats;
/* Used for ALUA Target Port Groups membership */
atomic_t sep_tg_pt_secondary_offline;
/* Used for PR ALL_TG_PT=1 */
atomic_t sep_tg_pt_ref_cnt;
spinlock_t sep_alua_lock;
struct mutex sep_tg_pt_md_mutex;
struct t10_alua_tg_pt_gp_member *sep_alua_tg_pt_gp_mem;
struct se_lun *sep_lun;
struct se_portal_group *sep_tpg;
struct list_head sep_alua_list;
struct list_head sep_list;
};
struct se_tpg_np {
struct se_portal_group *tpg_np_parent;
struct config_group tpg_np_group;
};
struct se_portal_group {
/* Type of target portal group, see transport_tpg_type_table */
enum transport_tpg_type_table se_tpg_type;
/* Number of ACLed Initiator Nodes for this TPG */
u32 num_node_acls;
/* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
atomic_t tpg_pr_ref_count;
/* Spinlock for adding/removing ACLed Nodes */
spinlock_t acl_node_lock;
/* Spinlock for adding/removing sessions */
spinlock_t session_lock;
spinlock_t tpg_lun_lock;
/* Pointer to $FABRIC_MOD portal group */
void *se_tpg_fabric_ptr;
struct list_head se_tpg_node;
/* linked list for initiator ACL list */
struct list_head acl_node_list;
struct se_lun **tpg_lun_list;
struct se_lun tpg_virt_lun0;
/* List of TCM sessions associated wth this TPG */
struct list_head tpg_sess_list;
/* Pointer to $FABRIC_MOD dependent code */
struct target_core_fabric_ops *se_tpg_tfo;
struct se_wwn *se_tpg_wwn;
struct config_group tpg_group;
struct config_group *tpg_default_groups[7];
struct config_group tpg_lun_group;
struct config_group tpg_np_group;
struct config_group tpg_acl_group;
struct config_group tpg_attrib_group;
struct config_group tpg_auth_group;
struct config_group tpg_param_group;
};
struct se_wwn {
struct target_fabric_configfs *wwn_tf;
struct config_group wwn_group;
struct config_group *wwn_default_groups[2];
struct config_group fabric_stat_group;
};
static inline void atomic_inc_mb(atomic_t *v)
{
smp_mb__before_atomic();
atomic_inc(v);
smp_mb__after_atomic();
}
static inline void atomic_dec_mb(atomic_t *v)
{
smp_mb__before_atomic();
atomic_dec(v);
smp_mb__after_atomic();
}
#endif /* TARGET_CORE_BASE_H */

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include/target/target_core_configfs.h Normal file
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#define TARGET_CORE_CONFIGFS_VERSION TARGET_CORE_MOD_VERSION
#define TARGET_CORE_CONFIG_ROOT "/sys/kernel/config"
#define TARGET_CORE_NAME_MAX_LEN 64
#define TARGET_FABRIC_NAME_SIZE 32
extern struct target_fabric_configfs *target_fabric_configfs_init(
struct module *, const char *);
extern void target_fabric_configfs_free(struct target_fabric_configfs *);
extern int target_fabric_configfs_register(struct target_fabric_configfs *);
extern void target_fabric_configfs_deregister(struct target_fabric_configfs *);
struct target_fabric_configfs_template {
struct config_item_type tfc_discovery_cit;
struct config_item_type tfc_wwn_cit;
struct config_item_type tfc_wwn_fabric_stats_cit;
struct config_item_type tfc_tpg_cit;
struct config_item_type tfc_tpg_base_cit;
struct config_item_type tfc_tpg_lun_cit;
struct config_item_type tfc_tpg_port_cit;
struct config_item_type tfc_tpg_port_stat_cit;
struct config_item_type tfc_tpg_np_cit;
struct config_item_type tfc_tpg_np_base_cit;
struct config_item_type tfc_tpg_attrib_cit;
struct config_item_type tfc_tpg_auth_cit;
struct config_item_type tfc_tpg_param_cit;
struct config_item_type tfc_tpg_nacl_cit;
struct config_item_type tfc_tpg_nacl_base_cit;
struct config_item_type tfc_tpg_nacl_attrib_cit;
struct config_item_type tfc_tpg_nacl_auth_cit;
struct config_item_type tfc_tpg_nacl_param_cit;
struct config_item_type tfc_tpg_nacl_stat_cit;
struct config_item_type tfc_tpg_mappedlun_cit;
struct config_item_type tfc_tpg_mappedlun_stat_cit;
};
struct target_fabric_configfs {
char tf_name[TARGET_FABRIC_NAME_SIZE];
atomic_t tf_access_cnt;
struct list_head tf_list;
struct config_group tf_group;
struct config_group tf_disc_group;
struct config_group *tf_default_groups[2];
/* Pointer to fabric's config_item */
struct config_item *tf_fabric;
/* Passed from fabric modules */
struct config_item_type *tf_fabric_cit;
/* Pointer to target core subsystem */
struct configfs_subsystem *tf_subsys;
/* Pointer to fabric's struct module */
struct module *tf_module;
struct target_core_fabric_ops tf_ops;
struct target_fabric_configfs_template tf_cit_tmpl;
};

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#ifndef TARGET_CORE_FABRIC_H
#define TARGET_CORE_FABRIC_H
struct target_core_fabric_ops {
struct configfs_subsystem *tf_subsys;
char *(*get_fabric_name)(void);
u8 (*get_fabric_proto_ident)(struct se_portal_group *);
char *(*tpg_get_wwn)(struct se_portal_group *);
u16 (*tpg_get_tag)(struct se_portal_group *);
u32 (*tpg_get_default_depth)(struct se_portal_group *);
u32 (*tpg_get_pr_transport_id)(struct se_portal_group *,
struct se_node_acl *,
struct t10_pr_registration *, int *,
unsigned char *);
u32 (*tpg_get_pr_transport_id_len)(struct se_portal_group *,
struct se_node_acl *,
struct t10_pr_registration *, int *);
char *(*tpg_parse_pr_out_transport_id)(struct se_portal_group *,
const char *, u32 *, char **);
int (*tpg_check_demo_mode)(struct se_portal_group *);
int (*tpg_check_demo_mode_cache)(struct se_portal_group *);
int (*tpg_check_demo_mode_write_protect)(struct se_portal_group *);
int (*tpg_check_prod_mode_write_protect)(struct se_portal_group *);
/*
* Optionally used by fabrics to allow demo-mode login, but not
* expose any TPG LUNs, and return 'not connected' in standard
* inquiry response
*/
int (*tpg_check_demo_mode_login_only)(struct se_portal_group *);
struct se_node_acl *(*tpg_alloc_fabric_acl)(
struct se_portal_group *);
void (*tpg_release_fabric_acl)(struct se_portal_group *,
struct se_node_acl *);
u32 (*tpg_get_inst_index)(struct se_portal_group *);
/*
* Optional to release struct se_cmd and fabric dependent allocated
* I/O descriptor in transport_cmd_check_stop().
*
* Returning 1 will signal a descriptor has been released.
* Returning 0 will signal a descriptor has not been released.
*/
int (*check_stop_free)(struct se_cmd *);
void (*release_cmd)(struct se_cmd *);
void (*put_session)(struct se_session *);
/*
* Called with spin_lock_bh(struct se_portal_group->session_lock held.
*/
int (*shutdown_session)(struct se_session *);
void (*close_session)(struct se_session *);
u32 (*sess_get_index)(struct se_session *);
/*
* Used only for SCSI fabrics that contain multi-value TransportIDs
* (like iSCSI). All other SCSI fabrics should set this to NULL.
*/
u32 (*sess_get_initiator_sid)(struct se_session *,
unsigned char *, u32);
int (*write_pending)(struct se_cmd *);
int (*write_pending_status)(struct se_cmd *);
void (*set_default_node_attributes)(struct se_node_acl *);
u32 (*get_task_tag)(struct se_cmd *);
int (*get_cmd_state)(struct se_cmd *);
int (*queue_data_in)(struct se_cmd *);
int (*queue_status)(struct se_cmd *);
void (*queue_tm_rsp)(struct se_cmd *);
void (*aborted_task)(struct se_cmd *);
/*
* fabric module calls for target_core_fabric_configfs.c
*/
struct se_wwn *(*fabric_make_wwn)(struct target_fabric_configfs *,
struct config_group *, const char *);
void (*fabric_drop_wwn)(struct se_wwn *);
struct se_portal_group *(*fabric_make_tpg)(struct se_wwn *,
struct config_group *, const char *);
void (*fabric_drop_tpg)(struct se_portal_group *);
int (*fabric_post_link)(struct se_portal_group *,
struct se_lun *);
void (*fabric_pre_unlink)(struct se_portal_group *,
struct se_lun *);
struct se_tpg_np *(*fabric_make_np)(struct se_portal_group *,
struct config_group *, const char *);
void (*fabric_drop_np)(struct se_tpg_np *);
struct se_node_acl *(*fabric_make_nodeacl)(struct se_portal_group *,
struct config_group *, const char *);
void (*fabric_drop_nodeacl)(struct se_node_acl *);
};
struct se_session *transport_init_session(enum target_prot_op);
int transport_alloc_session_tags(struct se_session *, unsigned int,
unsigned int);
struct se_session *transport_init_session_tags(unsigned int, unsigned int,
enum target_prot_op);
void __transport_register_session(struct se_portal_group *,
struct se_node_acl *, struct se_session *, void *);
void transport_register_session(struct se_portal_group *,
struct se_node_acl *, struct se_session *, void *);
void target_get_session(struct se_session *);
void target_put_session(struct se_session *);
void transport_free_session(struct se_session *);
void target_put_nacl(struct se_node_acl *);
void transport_deregister_session_configfs(struct se_session *);
void transport_deregister_session(struct se_session *);
void transport_init_se_cmd(struct se_cmd *, struct target_core_fabric_ops *,
struct se_session *, u32, int, int, unsigned char *);
sense_reason_t transport_lookup_cmd_lun(struct se_cmd *, u32);
sense_reason_t target_setup_cmd_from_cdb(struct se_cmd *, unsigned char *);
int target_submit_cmd_map_sgls(struct se_cmd *, struct se_session *,
unsigned char *, unsigned char *, u32, u32, int, int, int,
struct scatterlist *, u32, struct scatterlist *, u32,
struct scatterlist *, u32);
int target_submit_cmd(struct se_cmd *, struct se_session *, unsigned char *,
unsigned char *, u32, u32, int, int, int);
int target_submit_tmr(struct se_cmd *se_cmd, struct se_session *se_sess,
unsigned char *sense, u32 unpacked_lun,
void *fabric_tmr_ptr, unsigned char tm_type,
gfp_t, unsigned int, int);
int transport_handle_cdb_direct(struct se_cmd *);
sense_reason_t transport_generic_new_cmd(struct se_cmd *);
void target_execute_cmd(struct se_cmd *cmd);
int transport_generic_free_cmd(struct se_cmd *, int);
bool transport_wait_for_tasks(struct se_cmd *);
int transport_check_aborted_status(struct se_cmd *, int);
int transport_send_check_condition_and_sense(struct se_cmd *,
sense_reason_t, int);
int target_get_sess_cmd(struct se_session *, struct se_cmd *, bool);
int target_put_sess_cmd(struct se_session *, struct se_cmd *);
void target_sess_cmd_list_set_waiting(struct se_session *);
void target_wait_for_sess_cmds(struct se_session *);
int core_alua_check_nonop_delay(struct se_cmd *);
int core_tmr_alloc_req(struct se_cmd *, void *, u8, gfp_t);
void core_tmr_release_req(struct se_tmr_req *);
int transport_generic_handle_tmr(struct se_cmd *);
void transport_generic_request_failure(struct se_cmd *, sense_reason_t);
void __target_execute_cmd(struct se_cmd *);
int transport_lookup_tmr_lun(struct se_cmd *, u32);
struct se_node_acl *core_tpg_get_initiator_node_acl(struct se_portal_group *tpg,
unsigned char *);
struct se_node_acl *core_tpg_check_initiator_node_acl(struct se_portal_group *,
unsigned char *);
void core_tpg_clear_object_luns(struct se_portal_group *);
struct se_node_acl *core_tpg_add_initiator_node_acl(struct se_portal_group *,
struct se_node_acl *, const char *, u32);
int core_tpg_del_initiator_node_acl(struct se_portal_group *,
struct se_node_acl *, int);
int core_tpg_set_initiator_node_queue_depth(struct se_portal_group *,
unsigned char *, u32, int);
int core_tpg_set_initiator_node_tag(struct se_portal_group *,
struct se_node_acl *, const char *);
int core_tpg_register(struct target_core_fabric_ops *, struct se_wwn *,
struct se_portal_group *, void *, int);
int core_tpg_deregister(struct se_portal_group *);
/* SAS helpers */
u8 sas_get_fabric_proto_ident(struct se_portal_group *);
u32 sas_get_pr_transport_id(struct se_portal_group *, struct se_node_acl *,
struct t10_pr_registration *, int *, unsigned char *);
u32 sas_get_pr_transport_id_len(struct se_portal_group *, struct se_node_acl *,
struct t10_pr_registration *, int *);
char *sas_parse_pr_out_transport_id(struct se_portal_group *, const char *,
u32 *, char **);
/* FC helpers */
u8 fc_get_fabric_proto_ident(struct se_portal_group *);
u32 fc_get_pr_transport_id(struct se_portal_group *, struct se_node_acl *,
struct t10_pr_registration *, int *, unsigned char *);
u32 fc_get_pr_transport_id_len(struct se_portal_group *, struct se_node_acl *,
struct t10_pr_registration *, int *);
char *fc_parse_pr_out_transport_id(struct se_portal_group *, const char *,
u32 *, char **);
/* iSCSI helpers */
u8 iscsi_get_fabric_proto_ident(struct se_portal_group *);
u32 iscsi_get_pr_transport_id(struct se_portal_group *, struct se_node_acl *,
struct t10_pr_registration *, int *, unsigned char *);
u32 iscsi_get_pr_transport_id_len(struct se_portal_group *, struct se_node_acl *,
struct t10_pr_registration *, int *);
char *iscsi_parse_pr_out_transport_id(struct se_portal_group *, const char *,
u32 *, char **);
/*
* The LIO target core uses DMA_TO_DEVICE to mean that data is going
* to the target (eg handling a WRITE) and DMA_FROM_DEVICE to mean
* that data is coming from the target (eg handling a READ). However,
* this is just the opposite of what we have to tell the DMA mapping
* layer -- eg when handling a READ, the HBA will have to DMA the data
* out of memory so it can send it to the initiator, which means we
* need to use DMA_TO_DEVICE when we map the data.
*/
static inline enum dma_data_direction
target_reverse_dma_direction(struct se_cmd *se_cmd)
{
if (se_cmd->se_cmd_flags & SCF_BIDI)
return DMA_BIDIRECTIONAL;
switch (se_cmd->data_direction) {
case DMA_TO_DEVICE:
return DMA_FROM_DEVICE;
case DMA_FROM_DEVICE:
return DMA_TO_DEVICE;
case DMA_NONE:
default:
return DMA_NONE;
}
}
#endif /* TARGET_CORE_FABRICH */

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/*
* Used for tfc_wwn_cit attributes
*/
#include <target/configfs_macros.h>
CONFIGFS_EATTR_STRUCT(target_fabric_nacl_attrib, se_node_acl);
#define TF_NACL_ATTRIB_ATTR(_fabric, _name, _mode) \
static struct target_fabric_nacl_attrib_attribute _fabric##_nacl_attrib_##_name = \
__CONFIGFS_EATTR(_name, _mode, \
_fabric##_nacl_attrib_show_##_name, \
_fabric##_nacl_attrib_store_##_name);
CONFIGFS_EATTR_STRUCT(target_fabric_nacl_auth, se_node_acl);
#define TF_NACL_AUTH_ATTR(_fabric, _name, _mode) \
static struct target_fabric_nacl_auth_attribute _fabric##_nacl_auth_##_name = \
__CONFIGFS_EATTR(_name, _mode, \
_fabric##_nacl_auth_show_##_name, \
_fabric##_nacl_auth_store_##_name);
#define TF_NACL_AUTH_ATTR_RO(_fabric, _name) \
static struct target_fabric_nacl_auth_attribute _fabric##_nacl_auth_##_name = \
__CONFIGFS_EATTR_RO(_name, \
_fabric##_nacl_auth_show_##_name);
CONFIGFS_EATTR_STRUCT(target_fabric_nacl_param, se_node_acl);
#define TF_NACL_PARAM_ATTR(_fabric, _name, _mode) \
static struct target_fabric_nacl_param_attribute _fabric##_nacl_param_##_name = \
__CONFIGFS_EATTR(_name, _mode, \
_fabric##_nacl_param_show_##_name, \
_fabric##_nacl_param_store_##_name);
#define TF_NACL_PARAM_ATTR_RO(_fabric, _name) \
static struct target_fabric_nacl_param_attribute _fabric##_nacl_param_##_name = \
__CONFIGFS_EATTR_RO(_name, \
_fabric##_nacl_param_show_##_name);
CONFIGFS_EATTR_STRUCT(target_fabric_nacl_base, se_node_acl);
#define TF_NACL_BASE_ATTR(_fabric, _name, _mode) \
static struct target_fabric_nacl_base_attribute _fabric##_nacl_##_name = \
__CONFIGFS_EATTR(_name, _mode, \
_fabric##_nacl_show_##_name, \
_fabric##_nacl_store_##_name);
#define TF_NACL_BASE_ATTR_RO(_fabric, _name) \
static struct target_fabric_nacl_base_attribute _fabric##_nacl_##_name = \
__CONFIGFS_EATTR_RO(_name, \
_fabric##_nacl_show_##_name);
CONFIGFS_EATTR_STRUCT(target_fabric_np_base, se_tpg_np);
#define TF_NP_BASE_ATTR(_fabric, _name, _mode) \
static struct target_fabric_np_base_attribute _fabric##_np_##_name = \
__CONFIGFS_EATTR(_name, _mode, \
_fabric##_np_show_##_name, \
_fabric##_np_store_##_name);
CONFIGFS_EATTR_STRUCT(target_fabric_tpg_attrib, se_portal_group);
#define TF_TPG_ATTRIB_ATTR(_fabric, _name, _mode) \
static struct target_fabric_tpg_attrib_attribute _fabric##_tpg_attrib_##_name = \
__CONFIGFS_EATTR(_name, _mode, \
_fabric##_tpg_attrib_show_##_name, \
_fabric##_tpg_attrib_store_##_name);
CONFIGFS_EATTR_STRUCT(target_fabric_tpg_auth, se_portal_group);
#define TF_TPG_AUTH_ATTR(_fabric, _name, _mode) \
static struct target_fabric_tpg_auth_attribute _fabric##_tpg_auth_##_name = \
__CONFIGFS_EATTR(_name, _mode, \
_fabric##_tpg_auth_show_##_name, \
_fabric##_tpg_auth_store_##_name);
#define TF_TPG_AUTH_ATTR_RO(_fabric, _name) \
static struct target_fabric_tpg_auth_attribute _fabric##_tpg_auth_##_name = \
__CONFIGFS_EATTR_RO(_name, \
_fabric##_tpg_auth_show_##_name);
CONFIGFS_EATTR_STRUCT(target_fabric_tpg_param, se_portal_group);
#define TF_TPG_PARAM_ATTR(_fabric, _name, _mode) \
static struct target_fabric_tpg_param_attribute _fabric##_tpg_param_##_name = \
__CONFIGFS_EATTR(_name, _mode, \
_fabric##_tpg_param_show_##_name, \
_fabric##_tpg_param_store_##_name);
CONFIGFS_EATTR_STRUCT(target_fabric_tpg, se_portal_group);
#define TF_TPG_BASE_ATTR(_fabric, _name, _mode) \
static struct target_fabric_tpg_attribute _fabric##_tpg_##_name = \
__CONFIGFS_EATTR(_name, _mode, \
_fabric##_tpg_show_##_name, \
_fabric##_tpg_store_##_name);
CONFIGFS_EATTR_STRUCT(target_fabric_wwn, target_fabric_configfs);
#define TF_WWN_ATTR(_fabric, _name, _mode) \
static struct target_fabric_wwn_attribute _fabric##_wwn_##_name = \
__CONFIGFS_EATTR(_name, _mode, \
_fabric##_wwn_show_attr_##_name, \
_fabric##_wwn_store_attr_##_name);
#define TF_WWN_ATTR_RO(_fabric, _name) \
static struct target_fabric_wwn_attribute _fabric##_wwn_##_name = \
__CONFIGFS_EATTR_RO(_name, \
_fabric##_wwn_show_attr_##_name);
CONFIGFS_EATTR_STRUCT(target_fabric_discovery, target_fabric_configfs);
#define TF_DISC_ATTR(_fabric, _name, _mode) \
static struct target_fabric_discovery_attribute _fabric##_disc_##_name = \
__CONFIGFS_EATTR(_name, _mode, \
_fabric##_disc_show_##_name, \
_fabric##_disc_store_##_name);
#define TF_DISC_ATTR_RO(_fabric, _name) \
static struct target_fabric_discovery_attribute _fabric##_disc_##_name = \
__CONFIGFS_EATTR_RO(_name, \
_fabric##_disc_show_##_name);
extern int target_fabric_setup_cits(struct target_fabric_configfs *);