drivers/target/loopback/tcm_loop.h

   1 #define TCM_LOOP_VERSION                "v2.1-rc2"
   2 #define TL_WWN_ADDR_LEN                 256
   3 #define TL_TPGS_PER_HBA                 32
   4
   5 /*
   6  * Used in tcm_loop_driver_probe() for struct Scsi_Host->max_cmd_len
   7  */
   8 #define TL_SCSI_MAX_CMD_LEN             32
   9
  10 struct tcm_loop_cmd {
  11         /* State of Linux/SCSI CDB+Data descriptor */
  12         u32 sc_cmd_state;
  13         /* Tagged command queueing */
  14         u32 sc_cmd_tag;
  15         /* Pointer to the CDB+Data descriptor from Linux/SCSI subsystem */
  16         struct scsi_cmnd *sc;
  17         /* The TCM I/O descriptor that is accessed via container_of() */
  18         struct se_cmd tl_se_cmd;
  19         struct work_struct work;
  20         /* Sense buffer that will be mapped into outgoing status */
  21         unsigned char tl_sense_buf[TRANSPORT_SENSE_BUFFER];
  22 };
  23
  24 struct tcm_loop_tmr {
  25         atomic_t tmr_complete;
  26         wait_queue_head_t tl_tmr_wait;
  27 };
  28
  29 struct tcm_loop_nexus {
  30         int it_nexus_active;
  31         /*
  32          * Pointer to Linux/SCSI HBA from linux/include/scsi_host.h
  33          */
  34         struct scsi_host *sh;
  35         /*
  36          * Pointer to TCM session for I_T Nexus
  37          */
  38         struct se_session *se_sess;
  39 };
  40
  41 struct tcm_loop_nacl {
  42         struct se_node_acl se_node_acl;
  43 };
  44
  45 #define TCM_TRANSPORT_ONLINE 0
  46 #define TCM_TRANSPORT_OFFLINE 1
  47
  48 struct tcm_loop_tpg {
  49         unsigned short tl_tpgt;
  50         unsigned short tl_transport_status;
  51         atomic_t tl_tpg_port_count;
  52         struct se_portal_group tl_se_tpg;
  53         struct tcm_loop_hba *tl_hba;
  54 };
  55
  56 struct tcm_loop_hba {
  57         u8 tl_proto_id;
  58         unsigned char tl_wwn_address[TL_WWN_ADDR_LEN];
  59         struct se_hba_s *se_hba;
  60         struct se_lun *tl_hba_lun;
  61         struct se_port *tl_hba_lun_sep;
  62         struct tcm_loop_nexus *tl_nexus;
  63         struct device dev;
  64         struct Scsi_Host *sh;
  65         struct tcm_loop_tpg tl_hba_tpgs[TL_TPGS_PER_HBA];
  66         struct se_wwn tl_hba_wwn;
  67 };