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