diff options
| author | Keith Busch <kbusch@kernel.org> | 2022-03-03 12:13:12 -0800 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-03-07 12:49:13 -0700 |
| commit | 4020aad85c6785ddac8d51f345ff9e3328ce773a (patch) | |
| tree | b020e171daef757a33562a01cd4d9e7d3d7c1e21 /drivers/nvme/host/nvme.h | |
| parent | a7d4383f17e10f338ea757a849f02298790d24fb (diff) | |
| download | linux-4020aad85c6785ddac8d51f345ff9e3328ce773a.tar.bz2 | |
nvme: add support for enhanced metadata
NVM Express ratified TP 4068 defines new protection information formats.
Implement support for the CRC64 guard tags.
Since the block layer doesn't support variable length reference tags,
driver support for the Storage Tag space is not supported at this time.
Cc: Hannes Reinecke <hare@suse.de>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: Klaus Jensen <its@irrelevant.dk>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Link: https://lore.kernel.org/r/20220303201312.3255347-9-kbusch@kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/nvme/host/nvme.h')
| -rw-r--r-- | drivers/nvme/host/nvme.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h index 1bed663322ee..e7ccdb119ede 100644 --- a/drivers/nvme/host/nvme.h +++ b/drivers/nvme/host/nvme.h @@ -453,9 +453,11 @@ struct nvme_ns { int lba_shift; u16 ms; + u16 pi_size; u16 sgs; u32 sws; u8 pi_type; + u8 guard_type; #ifdef CONFIG_BLK_DEV_ZONED u64 zsze; #endif @@ -478,7 +480,7 @@ struct nvme_ns { /* NVMe ns supports metadata actions by the controller (generate/strip) */ static inline bool nvme_ns_has_pi(struct nvme_ns *ns) { - return ns->pi_type && ns->ms == sizeof(struct t10_pi_tuple); + return ns->pi_type && ns->ms == ns->pi_size; } struct nvme_ctrl_ops { |