mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-22 12:14:01 +08:00
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>
51 lines
1.2 KiB
C
51 lines
1.2 KiB
C
#ifndef TARGET_CORE_FILE_H
|
|
#define TARGET_CORE_FILE_H
|
|
|
|
#define FD_VERSION "4.0"
|
|
|
|
#define FD_MAX_DEV_NAME 256
|
|
/* Maximum queuedepth for the FILEIO HBA */
|
|
#define FD_HBA_QUEUE_DEPTH 256
|
|
#define FD_DEVICE_QUEUE_DEPTH 32
|
|
#define FD_MAX_DEVICE_QUEUE_DEPTH 128
|
|
#define FD_BLOCKSIZE 512
|
|
#define FD_MAX_SECTORS 1024
|
|
|
|
#define RRF_EMULATE_CDB 0x01
|
|
#define RRF_GOT_LBA 0x02
|
|
|
|
struct fd_request {
|
|
struct se_task fd_task;
|
|
/* SCSI CDB from iSCSI Command PDU */
|
|
unsigned char fd_scsi_cdb[TCM_MAX_COMMAND_SIZE];
|
|
/* FILEIO device */
|
|
struct fd_dev *fd_dev;
|
|
} ____cacheline_aligned;
|
|
|
|
#define FBDF_HAS_PATH 0x01
|
|
#define FBDF_HAS_SIZE 0x02
|
|
#define FDBD_USE_BUFFERED_IO 0x04
|
|
|
|
struct fd_dev {
|
|
u32 fbd_flags;
|
|
unsigned char fd_dev_name[FD_MAX_DEV_NAME];
|
|
/* Unique Ramdisk Device ID in Ramdisk HBA */
|
|
u32 fd_dev_id;
|
|
/* Number of SG tables in sg_table_array */
|
|
u32 fd_table_count;
|
|
u32 fd_queue_depth;
|
|
u32 fd_block_size;
|
|
unsigned long long fd_dev_size;
|
|
struct file *fd_file;
|
|
/* FILEIO HBA device is connected to */
|
|
struct fd_host *fd_host;
|
|
} ____cacheline_aligned;
|
|
|
|
struct fd_host {
|
|
u32 fd_host_dev_id_count;
|
|
/* Unique FILEIO Host ID */
|
|
u32 fd_host_id;
|
|
} ____cacheline_aligned;
|
|
|
|
#endif /* TARGET_CORE_FILE_H */
|