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| author | Nicholas Bellinger <nab@linux-iscsi.org> | 2014-01-18 09:32:56 +0000 |
|---|---|---|
| committer | Nicholas Bellinger <nab@linux-iscsi.org> | 2014-01-19 02:11:33 +0000 |
| commit | 0f5e2ec46dd64579c0770f3822764f94db4fa465 (patch) | |
| tree | 73e2087c6d3ed2c492ed824c31a4333476cb0df7 /drivers/target/target_core_file.h | |
| parent | ecebbf6ccbca58b4470f092cfb0644df59ea05dd (diff) | |
| download | linux-0f5e2ec46dd64579c0770f3822764f94db4fa465.tar.gz | |
target/file: Add DIF protection init/format support
This patch adds support for DIF protection init/format support into
the FILEIO backend.
It involves using a seperate $FILE.protection for storing PI that is
opened via fd_init_prot() using the common pi_prot_type attribute.
The actual formatting of the protection is done via fd_format_prot()
using the common pi_prot_format attribute, that will populate the
initial PI data based upon the currently configured pi_prot_type.
Based on original FILEIO code from Sagi.
v1 changes:
- Fix sparse warnings in fd_init_format_buf (Fengguang)
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Hannes Reinecke <hare@suse.de>
Cc: Sagi Grimberg <sagig@mellanox.com>
Cc: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/target/target_core_file.h')
| -rw-r--r-- | drivers/target/target_core_file.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/target/target_core_file.h b/drivers/target/target_core_file.h index 37ffc5bd2399..583691ebcbe0 100644 --- a/drivers/target/target_core_file.h +++ b/drivers/target/target_core_file.h @@ -4,6 +4,7 @@ #define FD_VERSION "4.0" #define FD_MAX_DEV_NAME 256 +#define FD_MAX_DEV_PROT_NAME FD_MAX_DEV_NAME + 16 #define FD_DEVICE_QUEUE_DEPTH 32 #define FD_MAX_DEVICE_QUEUE_DEPTH 128 #define FD_BLOCKSIZE 512 @@ -15,6 +16,8 @@ #define FBDF_HAS_PATH 0x01 #define FBDF_HAS_SIZE 0x02 #define FDBD_HAS_BUFFERED_IO_WCE 0x04 +#define FDBD_FORMAT_UNIT_SIZE 2048 + struct fd_dev { struct se_device dev; @@ -29,6 +32,7 @@ struct fd_dev { u32 fd_block_size; unsigned long long fd_dev_size; struct file *fd_file; + struct file *fd_prot_file; /* FILEIO HBA device is connected to */ struct fd_host *fd_host; } ____cacheline_aligned; |