drivers/target/loopback/tcm_loop.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #include <linux/types.h>
   3 #include <linux/device.h>
   4 #include <target/target_core_base.h> /* struct se_cmd */
   5
   6 #define TCM_LOOP_VERSION                "v2.1-rc2"
   7 #define TL_WWN_ADDR_LEN                 256
   8 #define TL_TPGS_PER_HBA                 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         struct completion tmr_done;
  21         /* Sense buffer that will be mapped into outgoing status */
  22         unsigned char tl_sense_buf[TRANSPORT_SENSE_BUFFER];
  23 };
  24
  25 struct tcm_loop_nexus {
  26         /*
  27          * Pointer to TCM session for I_T Nexus
  28          */
  29         struct se_session *se_sess;
  30 };
  31
  32 #define TCM_TRANSPORT_ONLINE 0
  33 #define TCM_TRANSPORT_OFFLINE 1
  34
  35 struct tcm_loop_tpg {
  36         unsigned short tl_tpgt;
  37         unsigned short tl_transport_status;
  38         enum target_prot_type tl_fabric_prot_type;
  39         atomic_t tl_tpg_port_count;
  40         struct se_portal_group tl_se_tpg;
  41         struct tcm_loop_hba *tl_hba;
  42         struct tcm_loop_nexus *tl_nexus;
  43 };
  44
  45 struct tcm_loop_hba {
  46         u8 tl_proto_id;
  47         unsigned char tl_wwn_address[TL_WWN_ADDR_LEN];
  48         struct se_hba_s *se_hba;
  49         struct se_lun *tl_hba_lun;
  50         struct se_port *tl_hba_lun_sep;
  51         struct device dev;
  52         struct Scsi_Host *sh;
  53         struct tcm_loop_tpg tl_hba_tpgs[TL_TPGS_PER_HBA];
  54         struct se_wwn tl_hba_wwn;
  55 };