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>
28 lines
616 B
C
28 lines
616 B
C
#ifndef TARGET_CORE_MIB_H
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#define TARGET_CORE_MIB_H
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typedef enum {
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SCSI_INST_INDEX,
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SCSI_DEVICE_INDEX,
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SCSI_AUTH_INTR_INDEX,
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SCSI_INDEX_TYPE_MAX
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} scsi_index_t;
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struct scsi_index_table {
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spinlock_t lock;
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u32 scsi_mib_index[SCSI_INDEX_TYPE_MAX];
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} ____cacheline_aligned;
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/* SCSI Port stats */
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struct scsi_port_stats {
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u64 cmd_pdus;
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u64 tx_data_octets;
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u64 rx_data_octets;
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} ____cacheline_aligned;
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extern int init_scsi_target_mib(void);
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extern void remove_scsi_target_mib(void);
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extern void init_scsi_index_table(void);
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extern u32 scsi_get_new_index(scsi_index_t);
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#endif /*** TARGET_CORE_MIB_H ***/
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