diff options
Diffstat (limited to 'include/target/target_core_base.h')
| -rw-r--r-- | include/target/target_core_base.h | 186 |
1 files changed, 79 insertions, 107 deletions
diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h index aec6f6a4477c..17ae2d6a4891 100644 --- a/include/target/target_core_base.h +++ b/include/target/target_core_base.h @@ -9,12 +9,8 @@ #include <net/sock.h> #include <net/tcp.h> -#define TARGET_CORE_MOD_VERSION "v4.1.0" -#define TARGET_CORE_VERSION TARGET_CORE_MOD_VERSION +#define TARGET_CORE_VERSION "v5.0" -/* Maximum Number of LUNs per Target Portal Group */ -/* Don't raise above 511 or REPORT_LUNS needs to handle >1 page */ -#define TRANSPORT_MAX_LUNS_PER_TPG 256 /* * Maximum size of a CDB that can be stored in se_cmd without allocating * memory dynamically for the CDB. @@ -70,12 +66,6 @@ #define DA_MAX_WRITE_SAME_LEN 0 /* Use a model alias based on the configfs backend device name */ #define DA_EMULATE_MODEL_ALIAS 0 -/* Emulation for Direct Page Out */ -#define DA_EMULATE_DPO 0 -/* Emulation for Forced Unit Access WRITEs */ -#define DA_EMULATE_FUA_WRITE 1 -/* Emulation for Forced Unit Access READs */ -#define DA_EMULATE_FUA_READ 0 /* Emulation for WriteCache and SYNCHRONIZE_CACHE */ #define DA_EMULATE_WRITE_CACHE 0 /* Emulation for UNIT ATTENTION Interlock Control */ @@ -116,18 +106,6 @@ enum hba_flags_table { HBA_FLAGS_PSCSI_MODE = 0x02, }; -/* struct se_lun->lun_status */ -enum transport_lun_status_table { - TRANSPORT_LUN_STATUS_FREE = 0, - TRANSPORT_LUN_STATUS_ACTIVE = 1, -}; - -/* struct se_portal_group->se_tpg_type */ -enum transport_tpg_type_table { - TRANSPORT_TPG_TYPE_NORMAL = 0, - TRANSPORT_TPG_TYPE_DISCOVERY = 1, -}; - /* Special transport agnostic struct se_cmd->t_states */ enum transport_state_table { TRANSPORT_NO_STATE = 0, @@ -158,14 +136,13 @@ enum se_cmd_flags_table { SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC = 0x00020000, SCF_COMPARE_AND_WRITE = 0x00080000, SCF_COMPARE_AND_WRITE_POST = 0x00100000, + SCF_PASSTHROUGH_PROT_SG_TO_MEM_NOALLOC = 0x00200000, }; /* struct se_dev_entry->lun_flags and struct se_lun->lun_access */ enum transport_lunflags_table { - TRANSPORT_LUNFLAGS_NO_ACCESS = 0x00, - TRANSPORT_LUNFLAGS_INITIATOR_ACCESS = 0x01, - TRANSPORT_LUNFLAGS_READ_ONLY = 0x02, - TRANSPORT_LUNFLAGS_READ_WRITE = 0x04, + TRANSPORT_LUNFLAGS_READ_ONLY = 0x01, + TRANSPORT_LUNFLAGS_READ_WRITE = 0x02, }; /* @@ -314,22 +291,13 @@ struct t10_alua_tg_pt_gp { struct se_device *tg_pt_gp_dev; struct config_group tg_pt_gp_group; struct list_head tg_pt_gp_list; - struct list_head tg_pt_gp_mem_list; - struct se_port *tg_pt_gp_alua_port; + struct list_head tg_pt_gp_lun_list; + struct se_lun *tg_pt_gp_alua_lun; struct se_node_acl *tg_pt_gp_alua_nacl; struct delayed_work tg_pt_gp_transition_work; struct completion *tg_pt_gp_transition_complete; }; -struct t10_alua_tg_pt_gp_member { - bool tg_pt_gp_assoc; - atomic_t tg_pt_gp_mem_ref_cnt; - spinlock_t tg_pt_gp_mem_lock; - struct t10_alua_tg_pt_gp *tg_pt_gp; - struct se_port *tg_pt; - struct list_head tg_pt_gp_mem_list; -}; - struct t10_vpd { unsigned char device_identifier[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN]; int protocol_identifier_set; @@ -374,15 +342,16 @@ struct t10_pr_registration { int pr_res_scope; /* Used for fabric initiator WWPNs using a ISID */ bool isid_present_at_reg; - u32 pr_res_mapped_lun; - u32 pr_aptpl_target_lun; + u64 pr_res_mapped_lun; + u64 pr_aptpl_target_lun; + u16 tg_pt_sep_rtpi; u32 pr_res_generation; u64 pr_reg_bin_isid; u64 pr_res_key; atomic_t pr_res_holders; struct se_node_acl *pr_reg_nacl; + /* Used by ALL_TG_PT=1 registration with deve->pr_ref taken */ struct se_dev_entry *pr_reg_deve; - struct se_lun *pr_reg_tg_pt_lun; struct list_head pr_reg_list; struct list_head pr_reg_abort_list; struct list_head pr_reg_aptpl_list; @@ -422,7 +391,7 @@ struct se_tmr_req { u8 response; int call_transport; /* Reference to ITT that Task Mgmt should be performed */ - u32 ref_task_tag; + u64 ref_task_tag; void *fabric_tmr_ptr; struct se_cmd *task_cmd; struct se_device *tmr_dev; @@ -475,6 +444,7 @@ struct se_cmd { u8 scsi_asc; u8 scsi_ascq; u16 scsi_sense_length; + u64 tag; /* SAM command identifier aka task tag */ /* Delay for ALUA Active/NonOptimized state access in milliseconds */ int alua_nonop_delay; /* See include/linux/dma-mapping.h */ @@ -493,7 +463,7 @@ struct se_cmd { /* Total size in bytes associated with command */ u32 data_length; u32 residual_count; - u32 orig_fe_lun; + u64 orig_fe_lun; /* Persistent Reservation key */ u64 pr_res_key; /* Used for sense data */ @@ -501,7 +471,6 @@ struct se_cmd { struct list_head se_delayed_node; struct list_head se_qf_node; struct se_device *se_dev; - struct se_dev_entry *se_deve; struct se_lun *se_lun; /* Only used for internal passthrough and legacy TCM fabric modules */ struct se_session *se_sess; @@ -511,9 +480,8 @@ struct se_cmd { struct kref cmd_kref; const struct target_core_fabric_ops *se_tfo; sense_reason_t (*execute_cmd)(struct se_cmd *); - sense_reason_t (*execute_rw)(struct se_cmd *, struct scatterlist *, - u32, enum dma_data_direction); sense_reason_t (*transport_complete_callback)(struct se_cmd *, bool); + void *protocol_data; unsigned char *t_task_cdb; unsigned char __t_task_cdb[TCM_MAX_COMMAND_SIZE]; @@ -569,7 +537,6 @@ struct se_cmd { struct se_ua { u8 ua_asc; u8 ua_ascq; - struct se_node_acl *ua_nacl; struct list_head ua_nacl_list; }; @@ -585,10 +552,10 @@ struct se_node_acl { char acl_tag[MAX_ACL_TAG_SIZE]; /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */ atomic_t acl_pr_ref_count; - struct se_dev_entry **device_list; + struct hlist_head lun_entry_hlist; struct se_session *nacl_sess; struct se_portal_group *se_tpg; - spinlock_t device_list_lock; + struct mutex lun_entry_mutex; spinlock_t nacl_sess_lock; struct config_group acl_group; struct config_group acl_attrib_group; @@ -632,33 +599,37 @@ struct se_ml_stat_grps { struct se_lun_acl { char initiatorname[TRANSPORT_IQN_LEN]; - u32 mapped_lun; + u64 mapped_lun; struct se_node_acl *se_lun_nacl; struct se_lun *se_lun; - struct list_head lacl_list; struct config_group se_lun_group; struct se_ml_stat_grps ml_stat_grps; }; struct se_dev_entry { - bool def_pr_registered; /* See transport_lunflags_table */ - u32 lun_flags; - u32 mapped_lun; - u32 total_cmds; + u64 mapped_lun; u64 pr_res_key; u64 creation_time; + u32 lun_flags; u32 attach_count; - u64 read_bytes; - u64 write_bytes; + atomic_long_t total_cmds; + atomic_long_t read_bytes; + atomic_long_t write_bytes; atomic_t ua_count; /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */ - atomic_t pr_ref_count; - struct se_lun_acl *se_lun_acl; + struct kref pr_kref; + struct completion pr_comp; + struct se_lun_acl __rcu *se_lun_acl; spinlock_t ua_lock; - struct se_lun *se_lun; + struct se_lun __rcu *se_lun; +#define DEF_PR_REG_ACTIVE 1 + unsigned long deve_flags; struct list_head alua_port_list; + struct list_head lun_link; struct list_head ua_list; + struct hlist_node link; + struct rcu_head rcu_head; }; struct se_dev_attrib { @@ -703,25 +674,48 @@ struct se_port_stat_grps { struct config_group scsi_transport_group; }; +struct scsi_port_stats { + atomic_long_t cmd_pdus; + atomic_long_t tx_data_octets; + atomic_long_t rx_data_octets; +}; + struct se_lun { + u64 unpacked_lun; #define SE_LUN_LINK_MAGIC 0xffff7771 u32 lun_link_magic; - /* See transport_lun_status_table */ - enum transport_lun_status_table lun_status; u32 lun_access; u32 lun_flags; - u32 unpacked_lun; + u32 lun_index; + + /* RELATIVE TARGET PORT IDENTIFER */ + u16 lun_rtpi; atomic_t lun_acl_count; - spinlock_t lun_acl_lock; - spinlock_t lun_sep_lock; - struct completion lun_shutdown_comp; - struct list_head lun_acl_list; - struct se_device *lun_se_dev; - struct se_port *lun_sep; + struct se_device __rcu *lun_se_dev; + + struct list_head lun_deve_list; + spinlock_t lun_deve_lock; + + /* ALUA state */ + int lun_tg_pt_secondary_stat; + int lun_tg_pt_secondary_write_md; + atomic_t lun_tg_pt_secondary_offline; + struct mutex lun_tg_pt_md_mutex; + + /* ALUA target port group linkage */ + struct list_head lun_tg_pt_gp_link; + struct t10_alua_tg_pt_gp *lun_tg_pt_gp; + spinlock_t lun_tg_pt_gp_lock; + + struct se_portal_group *lun_tpg; + struct scsi_port_stats lun_stats; struct config_group lun_group; struct se_port_stat_grps port_stat_grps; struct completion lun_ref_comp; struct percpu_ref lun_ref; + struct list_head lun_dev_link; + struct hlist_node link; + struct rcu_head rcu_head; }; struct se_dev_stat_grps { @@ -744,7 +738,6 @@ struct se_device { #define DF_EMULATED_VPD_UNIT_SERIAL 0x00000004 #define DF_USING_UDEV_PATH 0x00000008 #define DF_USING_ALIAS 0x00000010 - u32 dev_port_count; /* Physical device queue depth */ u32 queue_depth; /* Used for SPC-2 reservations enforce of ISIDs */ @@ -761,7 +754,7 @@ struct se_device { atomic_t dev_ordered_id; atomic_t dev_ordered_sync; atomic_t dev_qf_count; - int export_count; + u32 export_count; spinlock_t delayed_cmd_lock; spinlock_t execute_task_lock; spinlock_t dev_reservation_lock; @@ -803,12 +796,15 @@ struct se_device { #define SE_UDEV_PATH_LEN 512 /* must be less than PAGE_SIZE */ unsigned char udev_path[SE_UDEV_PATH_LEN]; /* Pointer to template of function pointers for transport */ - struct se_subsystem_api *transport; + const struct target_backend_ops *transport; /* Linked list for struct se_hba struct se_device list */ struct list_head dev_list; struct se_lun xcopy_lun; /* Protection Information */ int prot_length; + /* For se_lun->lun_se_dev RCU read-side critical access */ + u32 hba_index; + struct rcu_head rcu_head; }; struct se_hba { @@ -825,33 +821,7 @@ struct se_hba { spinlock_t device_lock; struct config_group hba_group; struct mutex hba_access_mutex; - struct se_subsystem_api *transport; -}; - -struct scsi_port_stats { - u64 cmd_pdus; - u64 tx_data_octets; - u64 rx_data_octets; -}; - -struct se_port { - /* RELATIVE TARGET PORT IDENTIFER */ - u16 sep_rtpi; - int sep_tg_pt_secondary_stat; - int sep_tg_pt_secondary_write_md; - u32 sep_index; - struct scsi_port_stats sep_stats; - /* Used for ALUA Target Port Groups membership */ - atomic_t sep_tg_pt_secondary_offline; - /* Used for PR ALL_TG_PT=1 */ - atomic_t sep_tg_pt_ref_cnt; - spinlock_t sep_alua_lock; - struct mutex sep_tg_pt_md_mutex; - struct t10_alua_tg_pt_gp_member *sep_alua_tg_pt_gp_mem; - struct se_lun *sep_lun; - struct se_portal_group *sep_tpg; - struct list_head sep_alua_list; - struct list_head sep_list; + struct target_backend *backend; }; struct se_tpg_np { @@ -860,24 +830,26 @@ struct se_tpg_np { }; struct se_portal_group { - /* Type of target portal group, see transport_tpg_type_table */ - enum transport_tpg_type_table se_tpg_type; + /* + * PROTOCOL IDENTIFIER value per SPC4, 7.5.1. + * + * Negative values can be used by fabric drivers for internal use TPGs. + */ + int proto_id; /* Number of ACLed Initiator Nodes for this TPG */ u32 num_node_acls; /* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */ atomic_t tpg_pr_ref_count; /* Spinlock for adding/removing ACLed Nodes */ - spinlock_t acl_node_lock; + struct mutex acl_node_mutex; /* Spinlock for adding/removing sessions */ spinlock_t session_lock; - spinlock_t tpg_lun_lock; - /* Pointer to $FABRIC_MOD portal group */ - void *se_tpg_fabric_ptr; + struct mutex tpg_lun_mutex; struct list_head se_tpg_node; /* linked list for initiator ACL list */ struct list_head acl_node_list; - struct se_lun **tpg_lun_list; - struct se_lun tpg_virt_lun0; + struct hlist_head tpg_lun_hlist; + struct se_lun *tpg_virt_lun0; /* List of TCM sessions associated wth this TPG */ struct list_head tpg_sess_list; /* Pointer to $FABRIC_MOD dependent code */ |