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#define TCM_LOOP_VERSION "v2.1-rc1"
#define TL_WWN_ADDR_LEN 256
#define TL_TPGS_PER_HBA 32
/*
* Defaults for struct scsi_host_template tcm_loop_driver_template
*
* We use large can_queue and cmd_per_lun here and let TCM enforce
* the underlying se_device_t->queue_depth.
*/
#define TL_SCSI_CAN_QUEUE 1024
#define TL_SCSI_CMD_PER_LUN 1024
#define TL_SCSI_MAX_SECTORS 1024
#define TL_SCSI_SG_TABLESIZE 256
/*
* Used in tcm_loop_driver_probe() for struct Scsi_Host->max_cmd_len
*/
#define TL_SCSI_MAX_CMD_LEN 32
#ifdef CONFIG_LOOPBACK_TARGET_CDB_DEBUG
# define TL_CDB_DEBUG(x...) printk(KERN_INFO x)
#else
# define TL_CDB_DEBUG(x...)
#endif
struct tcm_loop_cmd {
/* State of Linux/SCSI CDB+Data descriptor */
u32 sc_cmd_state;
/* Pointer to the CDB+Data descriptor from Linux/SCSI subsystem */
struct scsi_cmnd *sc;
struct list_head *tl_cmd_list;
/* The TCM I/O descriptor that is accessed via container_of() */
struct se_cmd tl_se_cmd;
/* Sense buffer that will be mapped into outgoing status */
unsigned char tl_sense_buf[TRANSPORT_SENSE_BUFFER];
};
struct tcm_loop_tmr {
atomic_t tmr_complete;
wait_queue_head_t tl_tmr_wait;
};
struct tcm_loop_nexus {
int it_nexus_active;
/*
* Pointer to Linux/SCSI HBA from linux/include/scsi_host.h
*/
struct scsi_host *sh;
/*
* Pointer to TCM session for I_T Nexus
*/
struct se_session *se_sess;
};
struct tcm_loop_nacl {
struct se_node_acl se_node_acl;
};
struct tcm_loop_tpg {
unsigned short tl_tpgt;
atomic_t tl_tpg_port_count;
struct se_portal_group tl_se_tpg;
struct tcm_loop_hba *tl_hba;
};
struct tcm_loop_hba {
u8 tl_proto_id;
unsigned char tl_wwn_address[TL_WWN_ADDR_LEN];
struct se_hba_s *se_hba;
struct se_lun *tl_hba_lun;
struct se_port *tl_hba_lun_sep;
struct se_device_s *se_dev_hba_ptr;
struct tcm_loop_nexus *tl_nexus;
struct device dev;
struct Scsi_Host *sh;
struct tcm_loop_tpg tl_hba_tpgs[TL_TPGS_PER_HBA];
struct se_wwn tl_hba_wwn;
};
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