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| author |   Bart Van Assche <bvanassche@acm.org> | 2019-06-28 09:53:30 -0700 |
|---|---|---|
| committer |   Christoph Hellwig <hch@lst.de> | 2019-07-09 14:15:37 -0700 |
| commit | 9d05a96e298aadb36e3ec971fab8d416e6fb7331 (patch) | |
| tree | 9c504202160ee7cf018a6e5ef3b0f3973c3c1752 /drivers/nvme/target/nvmet.h | |
| parent | nvme-trace: add delete completion and submission queue to admin cmds tracer (diff) | |
| download | linux-dev-9d05a96e298aadb36e3ec971fab8d416e6fb7331.tar.xz linux-dev-9d05a96e298aadb36e3ec971fab8d416e6fb7331.zip | |
nvmet: export I/O characteristics attributes in Identify
Make the NVMe NAWUN, NAWUPF, NACWU, NPWG, NPWA, NPDG and NOWS attributes
available to initator systems for the block backend.
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to '')
| -rw-r--r-- | drivers/nvme/target/nvmet.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/nvme/target/nvmet.h b/drivers/nvme/target/nvmet.h index dc270944bb25..6ee66c610739 100644 --- a/drivers/nvme/target/nvmet.h +++ b/drivers/nvme/target/nvmet.h @@ -365,6 +365,7 @@ u16 nvmet_set_feat_async_event(struct nvmet_req *req, u32 mask); void nvmet_execute_async_event(struct nvmet_req *req); u16 nvmet_parse_connect_cmd(struct nvmet_req *req); +void nvmet_bdev_set_limits(struct block_device *bdev, struct nvme_id_ns *id); u16 nvmet_bdev_parse_io_cmd(struct nvmet_req *req); u16 nvmet_file_parse_io_cmd(struct nvmet_req *req); u16 nvmet_parse_admin_cmd(struct nvmet_req *req); @@ -492,4 +493,11 @@ static inline u32 nvmet_rw_len(struct nvmet_req *req) } u16 errno_to_nvme_status(struct nvmet_req *req, int errno); + +/* Convert a 32-bit number to a 16-bit 0's based number */ +static inline __le16 to0based(u32 a) +{ + return cpu_to_le16(max(1U, min(1U << 16, a)) - 1); +} + #endif /* _NVMET_H */ |