c66ac9db8d
LIO target is a full featured in-kernel target framework with the
following feature set:
High-performance, non-blocking, multithreaded architecture with SIMD
support.
Advanced SCSI feature set:
* Persistent Reservations (PRs)
* Asymmetric Logical Unit Assignment (ALUA)
* Protocol and intra-nexus multiplexing, load-balancing and failover (MC/S)
* Full Error Recovery (ERL=0,1,2)
* Active/active task migration and session continuation (ERL=2)
* Thin LUN provisioning (UNMAP and WRITE_SAMExx)
Multiprotocol target plugins
Storage media independence:
* Virtualization of all storage media; transparent mapping of IO to LUNs
* No hard limits on number of LUNs per Target; maximum LUN size ~750 TB
* Backstores: SATA, SAS, SCSI, BluRay, DVD, FLASH, USB, ramdisk, etc.
Standards compliance:
* Full compliance with IETF (RFC 3720)
* Full implementation of SPC-4 PRs and ALUA
Significant code cleanups done by Christoph Hellwig.
[jejb: fix up for new block bdev exclusive interface. Minor fixes from
Randy Dunlap and Dan Carpenter.]
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
65 lines
1.5 KiB
C
65 lines
1.5 KiB
C
#ifndef TARGET_CORE_PSCSI_H
|
|
#define TARGET_CORE_PSCSI_H
|
|
|
|
#define PSCSI_VERSION "v4.0"
|
|
#define PSCSI_VIRTUAL_HBA_DEPTH 2048
|
|
|
|
/* used in pscsi_find_alloc_len() */
|
|
#ifndef INQUIRY_DATA_SIZE
|
|
#define INQUIRY_DATA_SIZE 0x24
|
|
#endif
|
|
|
|
/* used in pscsi_add_device_to_list() */
|
|
#define PSCSI_DEFAULT_QUEUEDEPTH 1
|
|
|
|
#define PS_RETRY 5
|
|
#define PS_TIMEOUT_DISK (15*HZ)
|
|
#define PS_TIMEOUT_OTHER (500*HZ)
|
|
|
|
#include <linux/device.h>
|
|
#include <scsi/scsi_driver.h>
|
|
#include <scsi/scsi_device.h>
|
|
#include <linux/kref.h>
|
|
#include <linux/kobject.h>
|
|
|
|
struct pscsi_plugin_task {
|
|
struct se_task pscsi_task;
|
|
unsigned char *pscsi_cdb;
|
|
unsigned char __pscsi_cdb[TCM_MAX_COMMAND_SIZE];
|
|
unsigned char pscsi_sense[SCSI_SENSE_BUFFERSIZE];
|
|
int pscsi_direction;
|
|
int pscsi_result;
|
|
u32 pscsi_resid;
|
|
struct request *pscsi_req;
|
|
} ____cacheline_aligned;
|
|
|
|
#define PDF_HAS_CHANNEL_ID 0x01
|
|
#define PDF_HAS_TARGET_ID 0x02
|
|
#define PDF_HAS_LUN_ID 0x04
|
|
#define PDF_HAS_VPD_UNIT_SERIAL 0x08
|
|
#define PDF_HAS_VPD_DEV_IDENT 0x10
|
|
#define PDF_HAS_VIRT_HOST_ID 0x20
|
|
|
|
struct pscsi_dev_virt {
|
|
int pdv_flags;
|
|
int pdv_host_id;
|
|
int pdv_channel_id;
|
|
int pdv_target_id;
|
|
int pdv_lun_id;
|
|
struct block_device *pdv_bd;
|
|
struct scsi_device *pdv_sd;
|
|
struct se_hba *pdv_se_hba;
|
|
} ____cacheline_aligned;
|
|
|
|
typedef enum phv_modes {
|
|
PHV_VIRUTAL_HOST_ID,
|
|
PHV_LLD_SCSI_HOST_NO
|
|
} phv_modes_t;
|
|
|
|
struct pscsi_hba_virt {
|
|
int phv_host_id;
|
|
phv_modes_t phv_mode;
|
|
struct Scsi_Host *phv_lld_host;
|
|
} ____cacheline_aligned;
|
|
|
|
#endif /*** TARGET_CORE_PSCSI_H ***/
|