![Nicholas Bellinger](/assets/img/avatar_default.png)
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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