linux/drivers/target/loopback/tcm_loop.h
Christoph Hellwig 0fd97ccf45 target: kill struct se_subsystem_dev
Simplify the code a lot by killing the superflous struct se_subsystem_dev.
Instead se_device is allocated early on by the backend driver, which allocates
it as part of its own per-device structure, borrowing the scheme that is for
example used for inode allocation.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2012-11-06 20:55:43 -08:00

62 lines
1.4 KiB
C

#define TCM_LOOP_VERSION "v2.1-rc2"
#define TL_WWN_ADDR_LEN 256
#define TL_TPGS_PER_HBA 32
/*
* Used in tcm_loop_driver_probe() for struct Scsi_Host->max_cmd_len
*/
#define TL_SCSI_MAX_CMD_LEN 32
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;
/* The TCM I/O descriptor that is accessed via container_of() */
struct se_cmd tl_se_cmd;
struct work_struct work;
/* 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 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;
};