#include <net/tcp.h>
#define TARGET_CORE_MOD_VERSION "v4.1.0-rc1-ml"
-#define SHUTDOWN_SIGS (sigmask(SIGKILL)|sigmask(SIGINT)|sigmask(SIGABRT))
-/* Used by transport_generic_allocate_iovecs() */
-#define TRANSPORT_IOV_DATA_BUFFER 5
/* 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
};
/* Used for generate timer flags */
-enum timer_flags_table {
- TF_RUNNING = 0x01,
- TF_STOP = 0x02,
+enum se_task_flags {
+ TF_ACTIVE = (1 << 0),
+ TF_SENT = (1 << 1),
+ TF_REQUEST_STOP = (1 << 2),
};
/* Special transport agnostic struct se_cmd->t_states */
enum transport_state_table {
TRANSPORT_NO_STATE = 0,
TRANSPORT_NEW_CMD = 1,
- TRANSPORT_DEFERRED_CMD = 2,
TRANSPORT_WRITE_PENDING = 3,
TRANSPORT_PROCESS_WRITE = 4,
TRANSPORT_PROCESSING = 5,
- TRANSPORT_COMPLETE_OK = 6,
- TRANSPORT_COMPLETE_FAILURE = 7,
- TRANSPORT_COMPLETE_TIMEOUT = 8,
+ TRANSPORT_COMPLETE = 6,
TRANSPORT_PROCESS_TMR = 9,
- TRANSPORT_TMR_COMPLETE = 10,
TRANSPORT_ISTATE_PROCESSING = 11,
- TRANSPORT_ISTATE_PROCESSED = 12,
- TRANSPORT_KILL = 13,
- TRANSPORT_REMOVE = 14,
- TRANSPORT_FREE = 15,
TRANSPORT_NEW_CMD_MAP = 16,
- TRANSPORT_FREE_CMD_INTR = 17,
TRANSPORT_COMPLETE_QF_WP = 18,
+ TRANSPORT_COMPLETE_QF_OK = 19,
};
/* Used for struct se_cmd->se_cmd_flags */
SCF_SCSI_NON_DATA_CDB = 0x00000040,
SCF_SCSI_CDB_EXCEPTION = 0x00000080,
SCF_SCSI_RESERVATION_CONFLICT = 0x00000100,
- SCF_SE_CMD_FAILED = 0x00000400,
+ SCF_FUA = 0x00000200,
SCF_SE_LUN_CMD = 0x00000800,
SCF_SE_ALLOW_EOO = 0x00001000,
+ SCF_BIDI = 0x00002000,
SCF_SENT_CHECK_CONDITION = 0x00004000,
SCF_OVERFLOW_BIT = 0x00008000,
SCF_UNDERFLOW_BIT = 0x00010000,
SCF_DELAYED_CMD_FROM_SAM_ATTR = 0x00080000,
SCF_UNUSED = 0x00100000,
SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC = 0x00400000,
- SCF_EMULATE_CDB_ASYNC = 0x01000000,
- SCF_EMULATE_QUEUE_FULL = 0x02000000,
};
/* struct se_dev_entry->lun_flags and struct se_lun->lun_access */
TCM_CHECK_CONDITION_ABORT_CMD = 0x0d,
TCM_CHECK_CONDITION_UNIT_ATTENTION = 0x0e,
TCM_CHECK_CONDITION_NOT_READY = 0x0f,
+ TCM_RESERVATION_CONFLICT = 0x10,
};
struct se_obj {
u16 lu_gp_id;
int lu_gp_valid_id;
u32 lu_gp_members;
- atomic_t lu_gp_shutdown;
atomic_t lu_gp_ref_cnt;
spinlock_t lu_gp_lock;
struct config_group lu_gp_group;
} ____cacheline_aligned;
struct se_task {
- unsigned char task_sense;
- struct scatterlist *task_sg;
- u32 task_sg_nents;
- struct scatterlist *task_sg_bidi;
- u8 task_scsi_status;
- u8 task_flags;
- int task_error_status;
- int task_state_flags;
- bool task_padded_sg;
unsigned long long task_lba;
- u32 task_no;
- u32 task_sectors;
- u32 task_size;
+ u32 task_sectors;
+ u32 task_size;
+ struct se_cmd *task_se_cmd;
+ struct scatterlist *task_sg;
+ u32 task_sg_nents;
+ u16 task_flags;
+ u8 task_sense;
+ u8 task_scsi_status;
+ int task_error_status;
enum dma_data_direction task_data_direction;
- struct se_cmd *task_se_cmd;
- struct se_device *se_dev;
+ atomic_t task_state_active;
+ struct list_head t_list;
+ struct list_head t_execute_list;
+ struct list_head t_state_list;
struct completion task_stop_comp;
- atomic_t task_active;
- atomic_t task_execute_queue;
- atomic_t task_timeout;
- atomic_t task_sent;
- atomic_t task_stop;
- atomic_t task_state_active;
- struct timer_list task_timer;
- struct se_device *se_obj_ptr;
- struct list_head t_list;
- struct list_head t_execute_list;
- struct list_head t_state_list;
} ____cacheline_aligned;
struct se_cmd {
int sam_task_attr;
/* Transport protocol dependent state, see transport_state_table */
enum transport_state_table t_state;
- /* Transport protocol dependent state for out of order CmdSNs */
- int deferred_t_state;
- /* Transport specific error status */
- int transport_error_status;
+ /* Used to signal cmd->se_tfo->check_release_cmd() usage per cmd */
+ unsigned check_release:1;
+ unsigned cmd_wait_set:1;
/* See se_cmd_flags_table */
u32 se_cmd_flags;
u32 se_ordered_id;
u32 orig_fe_lun;
/* Persistent Reservation key */
u64 pr_res_key;
- atomic_t transport_sent;
/* Used for sense data */
void *sense_buffer;
struct list_head se_delayed_node;
- struct list_head se_ordered_node;
struct list_head se_lun_node;
struct list_head se_qf_node;
struct se_device *se_dev;
struct se_dev_entry *se_deve;
- struct se_device *se_obj_ptr;
- struct se_device *se_orig_obj_ptr;
struct se_lun *se_lun;
/* Only used for internal passthrough and legacy TCM fabric modules */
struct se_session *se_sess;
struct se_tmr_req *se_tmr_req;
struct list_head se_queue_node;
+ struct list_head se_cmd_list;
+ struct completion cmd_wait_comp;
struct target_core_fabric_ops *se_tfo;
- int (*transport_emulate_cdb)(struct se_cmd *);
- void (*transport_split_cdb)(unsigned long long, u32, unsigned char *);
- void (*transport_wait_for_tasks)(struct se_cmd *, int, int);
+ int (*execute_task)(struct se_task *);
void (*transport_complete_callback)(struct se_cmd *);
- int (*transport_qf_callback)(struct se_cmd *);
unsigned char *t_task_cdb;
unsigned char __t_task_cdb[TCM_MAX_COMMAND_SIZE];
unsigned long long t_task_lba;
int t_tasks_failed;
- int t_tasks_fua;
- bool t_tasks_bidi;
u32 t_tasks_sg_chained_no;
atomic_t t_fe_count;
atomic_t t_se_count;
atomic_t t_task_cdbs_left;
atomic_t t_task_cdbs_ex_left;
- atomic_t t_task_cdbs_timeout_left;
atomic_t t_task_cdbs_sent;
atomic_t t_transport_aborted;
atomic_t t_transport_active;
atomic_t t_transport_queue_active;
atomic_t t_transport_sent;
atomic_t t_transport_stop;
- atomic_t t_transport_timeout;
atomic_t transport_dev_active;
atomic_t transport_lun_active;
atomic_t transport_lun_fe_stop;
struct completion transport_lun_stop_comp;
struct scatterlist *t_tasks_sg_chained;
- /*
- * Used for pre-registered fabric SGL passthrough WRITE and READ
- * with the special SCF_PASSTHROUGH_CONTIG_TO_SG case for TCM_Loop
- * and other HW target mode fabric modules.
- */
- struct scatterlist *t_task_pt_sgl;
- u32 t_task_pt_sgl_num;
+ struct work_struct work;
struct scatterlist *t_data_sg;
unsigned int t_data_nents;
} ____cacheline_aligned;
struct se_session {
+ unsigned sess_tearing_down:1;
u64 sess_bin_isid;
struct se_node_acl *se_node_acl;
struct se_portal_group *se_tpg;
void *fabric_sess_ptr;
struct list_head sess_list;
struct list_head sess_acl_list;
+ struct list_head sess_cmd_list;
+ struct list_head sess_wait_list;
+ spinlock_t sess_cmd_lock;
} ____cacheline_aligned;
struct se_device;
u32 optimal_sectors;
u32 hw_queue_depth;
u32 queue_depth;
- u32 task_timeout;
u32 max_unmap_lba_count;
u32 max_unmap_block_desc_count;
u32 unmap_granularity;
} ____cacheline_aligned;
struct se_device {
- /* Set to 1 if thread is NOT sleeping on thread_sem */
- u8 thread_active;
- u8 dev_status_timer_flags;
/* RELATIVE TARGET PORT IDENTIFER Counter */
u16 dev_rpti_counter;
/* Used for SAM Task Attribute ordering */
u64 write_bytes;
spinlock_t stats_lock;
/* Active commands on this virtual SE device */
- atomic_t active_cmds;
atomic_t simple_cmds;
atomic_t depth_left;
atomic_t dev_ordered_id;
- atomic_t dev_tur_active;
atomic_t execute_tasks;
- atomic_t dev_status_thr_count;
- atomic_t dev_hoq_count;
atomic_t dev_ordered_sync;
atomic_t dev_qf_count;
struct se_obj dev_obj;
struct se_obj dev_export_obj;
struct se_queue_obj dev_queue_obj;
spinlock_t delayed_cmd_lock;
- spinlock_t ordered_cmd_lock;
spinlock_t execute_task_lock;
- spinlock_t state_task_lock;
- spinlock_t dev_alua_lock;
spinlock_t dev_reservation_lock;
- spinlock_t dev_state_lock;
spinlock_t dev_status_lock;
- spinlock_t dev_status_thr_lock;
spinlock_t se_port_lock;
spinlock_t se_tmr_lock;
spinlock_t qf_cmd_lock;
struct t10_pr_registration *dev_pr_res_holder;
struct list_head dev_sep_list;
struct list_head dev_tmr_list;
- struct timer_list dev_status_timer;
/* Pointer to descriptor for processing thread */
struct task_struct *process_thread;
- pid_t process_thread_pid;
- struct task_struct *dev_mgmt_thread;
struct work_struct qf_work_queue;
struct list_head delayed_cmd_list;
- struct list_head ordered_cmd_list;
struct list_head execute_task_list;
struct list_head state_task_list;
struct list_head qf_cmd_list;
struct se_subsystem_api *transport;
/* Linked list for struct se_hba struct se_device list */
struct list_head dev_list;
- /* Linked list for struct se_global->g_se_dev_list */
- struct list_head g_se_dev_list;
} ____cacheline_aligned;
struct se_hba {
u32 sep_index;
struct scsi_port_stats sep_stats;
/* Used for ALUA Target Port Groups membership */
- atomic_t sep_tg_pt_gp_active;
atomic_t sep_tg_pt_secondary_offline;
/* Used for PR ALL_TG_PT=1 */
atomic_t sep_tg_pt_ref_cnt;
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