drivers/target/target_core_file.h

   1 #ifndef TARGET_CORE_FILE_H
   2 #define TARGET_CORE_FILE_H
   3
   4 #define FD_VERSION              "4.0"
   5
   6 #define FD_MAX_DEV_NAME         256
   7 #define FD_DEVICE_QUEUE_DEPTH   32
   8 #define FD_MAX_DEVICE_QUEUE_DEPTH 128
   9 #define FD_BLOCKSIZE            512
  10 #define FD_MAX_SECTORS          1024
  11
  12 #define RRF_EMULATE_CDB         0x01
  13 #define RRF_GOT_LBA             0x02
  14
  15 struct fd_request {
  16         struct se_task  fd_task;
  17         /* SCSI CDB from iSCSI Command PDU */
  18         unsigned char   fd_scsi_cdb[TCM_MAX_COMMAND_SIZE];
  19         /* FILEIO device */
  20         struct fd_dev   *fd_dev;
  21 } ____cacheline_aligned;
  22
  23 #define FBDF_HAS_PATH           0x01
  24 #define FBDF_HAS_SIZE           0x02
  25 #define FDBD_USE_BUFFERED_IO    0x04
  26
  27 struct fd_dev {
  28         u32             fbd_flags;
  29         unsigned char   fd_dev_name[FD_MAX_DEV_NAME];
  30         /* Unique Ramdisk Device ID in Ramdisk HBA */
  31         u32             fd_dev_id;
  32         /* Number of SG tables in sg_table_array */
  33         u32             fd_table_count;
  34         u32             fd_queue_depth;
  35         u32             fd_block_size;
  36         unsigned long long fd_dev_size;
  37         struct file     *fd_file;
  38         /* FILEIO HBA device is connected to */
  39         struct fd_host *fd_host;
  40 } ____cacheline_aligned;
  41
  42 struct fd_host {
  43         u32             fd_host_dev_id_count;
  44         /* Unique FILEIO Host ID */
  45         u32             fd_host_id;
  46 } ____cacheline_aligned;
  47
  48 #endif /* TARGET_CORE_FILE_H */