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| author | Kanchan Joshi <joshi.k@samsung.com> | 2022-05-11 11:17:48 +0530 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-05-11 07:41:13 -0600 |
| commit | 456cba386e94f22fa1b1426303fdcac9e66b1417 (patch) | |
| tree | 679d2acc3e7f2d9cd7005a6012155c030f7363a6 /drivers/nvme/host/nvme.h | |
| parent | bcad2565b5d64700cf68cc9d48618ab817ff5bc4 (diff) | |
| download | linux-456cba386e94f22fa1b1426303fdcac9e66b1417.tar.bz2 | |
nvme: wire-up uring-cmd support for io-passthru on char-device.
Introduce handler for fops->uring_cmd(), implementing async passthru
on char device (/dev/ngX). The handler supports newly introduced
operation NVME_URING_CMD_IO. This operates on a new structure
nvme_uring_cmd, which is similar to struct nvme_passthru_cmd64 but
without the embedded 8b result field. This field is not needed since
uring-cmd allows to return additional result via big-CQE.
Signed-off-by: Kanchan Joshi <joshi.k@samsung.com>
Signed-off-by: Anuj Gupta <anuj20.g@samsung.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20220511054750.20432-5-joshi.k@samsung.com
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, 4 insertions, 0 deletions
diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h index a2b53ca63335..086ccbdd7003 100644 --- a/drivers/nvme/host/nvme.h +++ b/drivers/nvme/host/nvme.h @@ -782,6 +782,10 @@ long nvme_ns_head_chr_ioctl(struct file *file, unsigned int cmd, unsigned long arg); long nvme_dev_ioctl(struct file *file, unsigned int cmd, unsigned long arg); +int nvme_ns_chr_uring_cmd(struct io_uring_cmd *ioucmd, + unsigned int issue_flags); +int nvme_ns_head_chr_uring_cmd(struct io_uring_cmd *ioucmd, + unsigned int issue_flags); int nvme_getgeo(struct block_device *bdev, struct hd_geometry *geo); extern const struct attribute_group *nvme_ns_id_attr_groups[]; |