drivers/target/target_core_iblock.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef TARGET_CORE_IBLOCK_H
   3 #define TARGET_CORE_IBLOCK_H
   4
   5 #include <linux/atomic.h>
   6 #include <linux/refcount.h>
   7 #include <linux/blkdev.h>
   8 #include <target/target_core_base.h>
   9
  10 #define IBLOCK_VERSION          "4.0"
  11
  12 #define IBLOCK_MAX_CDBS         16
  13
  14 struct iblock_req {
  15         refcount_t pending;
  16         atomic_t ib_bio_err_cnt;
  17 } ____cacheline_aligned;
  18
  19 #define IBDF_HAS_UDEV_PATH              0x01
  20
  21 #define IBD_PLUGF_PLUGGED               0x01
  22
  23 struct iblock_dev_plug {
  24         struct se_dev_plug se_plug;
  25         struct blk_plug blk_plug;
  26         unsigned long flags;
  27 };
  28
  29 struct iblock_dev {
  30         struct se_device dev;
  31         unsigned char ibd_udev_path[SE_UDEV_PATH_LEN];
  32         u32     ibd_flags;
  33         struct bio_set  ibd_bio_set;
  34         struct block_device *ibd_bd;
  35         struct file *ibd_bdev_file;
  36         bool ibd_readonly;
  37         struct iblock_dev_plug *ibd_plug;
  38 } ____cacheline_aligned;
  39
  40 #endif /* TARGET_CORE_IBLOCK_H */