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dif: Fix opposite definition of DIF location parameter from SPDK NVMe API

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SPDK NVMe driver and NVMe CLI define the parameter about DIF location as
follows:

If set to 1 and DIF is enabled, then DIF is transferred as the first 8
bytes of metadata. If set to 0 and DIF is enabled, then DIF is transferred
as the last 8 bytes of metadata. Defaults to 0.

This patch fixes the apparent inconsistency.

Change-Id: I481332bb9a6caa488664dbd1fe6039270b9f9663
Signed-off-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-on: https://review.gerrithub.io/c/440672
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: wuzhouhui <wuzhouhui@kingsoft.com>
Reviewed-by: Paul Luse <paul.e.luse@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Chandler-Test-Pool: SPDK Automated Test System <sys_sgsw@intel.com>
This commit is contained in:
Shuhei Matsumoto 2019-01-16 15:40:59 +09:00 committed by Jim Harris
parent 9cba82b955
commit 3f836b036f
3 changed files with 11 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
include/spdk/dif.h
View File

@ -110,8 +110,8 @@ struct spdk_dif_error {
* \param md_size Metadata size in a block.
* \param md_interleave If true, metadata is interleaved with block data.
* If false, metadata is separated with block data.
* \param dif_loc DIF location. If true, DIF is set in the last 8 bytes of metadata.
* If false, DIF is in the first 8 bytes of metadata.
* \param dif_loc DIF location. If true, DIF is set in the first 8 bytes of metadata.
* If false, DIF is in the last 8 bytes of metadata.
* \param dif_type Type of DIF.
* \param dif_flags Flag to specify the DIF action.
* \param init_ref_tag Initial reference tag. For type 1, this is the

2
lib/util/dif.c
View File

@ -158,7 +158,7 @@ _dif_is_disabled(enum spdk_dif_type dif_type)
static uint32_t
_get_guard_interval(uint32_t block_size, uint32_t md_size, bool dif_loc, bool md_interleave)
{
if (dif_loc) {
if (!dif_loc) {
/* For metadata formats with more than 8 bytes, if the DIF is
* contained in the last 8 bytes of metadata, then the CRC
* covers all metadata up to but excluding these last 8 bytes.

16
test/unit/lib/util/dif.c/dif_ut.c
View File

@ -183,7 +183,7 @@ dif_generate_and_verify_test(void)
/* The case that DIF is contained in the first 8 bytes of metadata. */
_dif_generate_and_verify(&iov,
4096 + 128, 128, false,
4096 + 128, 128, true,
SPDK_DIF_TYPE1, dif_flags,
22, 22,
0x22, 0xFFFF, 0x22,
@ -191,7 +191,7 @@ dif_generate_and_verify_test(void)
/* The case that DIF is contained in the last 8 bytes of metadata. */
_dif_generate_and_verify(&iov,
4096 + 128, 128, true,
4096 + 128, 128, false,
SPDK_DIF_TYPE1, dif_flags,
22, 22,
0x22, 0xFFFF, 0x22,
@ -613,11 +613,11 @@ dif_inject_error_and_verify(struct iovec *iovs, int iovcnt,
{
/* The case that DIF is contained in the first 8 bytes of metadata. */
_dif_inject_error_and_verify(iovs, iovcnt, block_size, md_size, num_blocks,
inject_flags, false);
inject_flags, true);
/* The case that DIF is contained in the last 8 bytes of metadata. */
_dif_inject_error_and_verify(iovs, iovcnt, block_size, md_size, num_blocks,
inject_flags, true);
inject_flags, false);
}
static void
@ -935,12 +935,12 @@ dif_copy_inject_error_and_verify(struct iovec *iovs, int iovcnt, struct iovec *b
/* The case that DIF is contained in the first 8 bytes of metadata. */
_dif_copy_inject_error_and_verify(iovs, iovcnt, bounce_iov,
block_size, md_size, num_blocks,
inject_flags, false);
inject_flags, true);
/* The case that DIF is contained in the last 8 bytes of metadata. */
_dif_copy_inject_error_and_verify(iovs, iovcnt, bounce_iov,
block_size, md_size, num_blocks,
inject_flags, true);
inject_flags, false);
}
static void
@ -1219,11 +1219,11 @@ dix_inject_error_and_verify(struct iovec *iovs, int iovcnt, struct iovec *md_iov
{
/* The case that DIF is contained in the first 8 bytes of metadata. */
_dix_inject_error_and_verify(iovs, iovcnt, md_iov, block_size, md_size, num_blocks,
inject_flags, false);
inject_flags, true);
/* The case that DIF is contained in the last 8 bytes of metadata. */
_dix_inject_error_and_verify(iovs, iovcnt, md_iov, block_size, md_size, num_blocks,
inject_flags, true);
inject_flags, false);
}
static void