drivers/target/loopback/tcm_loop.h

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