forked from Minki/linux
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>
53 lines
1.9 KiB
C
53 lines
1.9 KiB
C
#define TARGET_CORE_CONFIGFS_VERSION TARGET_CORE_MOD_VERSION
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#define TARGET_CORE_CONFIG_ROOT "/sys/kernel/config"
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#define TARGET_CORE_NAME_MAX_LEN 64
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#define TARGET_FABRIC_NAME_SIZE 32
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extern struct target_fabric_configfs *target_fabric_configfs_init(
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struct module *, const char *);
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extern void target_fabric_configfs_free(struct target_fabric_configfs *);
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extern int target_fabric_configfs_register(struct target_fabric_configfs *);
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extern void target_fabric_configfs_deregister(struct target_fabric_configfs *);
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struct target_fabric_configfs_template {
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struct config_item_type tfc_discovery_cit;
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struct config_item_type tfc_wwn_cit;
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struct config_item_type tfc_tpg_cit;
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struct config_item_type tfc_tpg_base_cit;
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struct config_item_type tfc_tpg_lun_cit;
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struct config_item_type tfc_tpg_port_cit;
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struct config_item_type tfc_tpg_np_cit;
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struct config_item_type tfc_tpg_np_base_cit;
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struct config_item_type tfc_tpg_attrib_cit;
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struct config_item_type tfc_tpg_param_cit;
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struct config_item_type tfc_tpg_nacl_cit;
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struct config_item_type tfc_tpg_nacl_base_cit;
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struct config_item_type tfc_tpg_nacl_attrib_cit;
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struct config_item_type tfc_tpg_nacl_auth_cit;
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struct config_item_type tfc_tpg_nacl_param_cit;
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struct config_item_type tfc_tpg_mappedlun_cit;
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};
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struct target_fabric_configfs {
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char tf_name[TARGET_FABRIC_NAME_SIZE];
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atomic_t tf_access_cnt;
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struct list_head tf_list;
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struct config_group tf_group;
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struct config_group tf_disc_group;
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struct config_group *tf_default_groups[2];
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/* Pointer to fabric's config_item */
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struct config_item *tf_fabric;
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/* Passed from fabric modules */
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struct config_item_type *tf_fabric_cit;
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/* Pointer to target core subsystem */
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struct configfs_subsystem *tf_subsys;
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/* Pointer to fabric's struct module */
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struct module *tf_module;
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struct target_core_fabric_ops tf_ops;
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struct target_fabric_configfs_template tf_cit_tmpl;
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};
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#define TF_CIT_TMPL(tf) (&(tf)->tf_cit_tmpl)
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