diff options
| author | Kanchan Joshi <joshi.k@samsung.com> | 2024-11-28 12:22:38 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2024-12-23 16:17:16 +0100 |
| commit | 472292cd8cfcfb9f2e7731c3c54196c35b8d283d (patch) | |
| tree | 4a1ad9a1a6408c5b72e5ee0999a8420aeaa7e365 /drivers/nvme | |
| parent | block: introduce BIP_CHECK_GUARD/REFTAG/APPTAG bip_flags (diff) | |
| download | linux-472292cd8cfcfb9f2e7731c3c54196c35b8d283d.tar.xz linux-472292cd8cfcfb9f2e7731c3c54196c35b8d283d.zip | |
nvme: add support for passing on the application tag
With user integrity buffer, there is a way to specify the app_tag.
Set the corresponding protocol specific flags and send the app_tag down.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Anuj Gupta <anuj20.g@samsung.com>
Signed-off-by: Kanchan Joshi <joshi.k@samsung.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Link: https://lore.kernel.org/r/20241128112240.8867-9-anuj20.g@samsung.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/nvme')
| -rw-r--r-- | drivers/nvme/host/core.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index 766df130cd82..0983482b3ea2 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -885,6 +885,12 @@ static blk_status_t nvme_setup_discard(struct nvme_ns *ns, struct request *req, return BLK_STS_OK; } +static void nvme_set_app_tag(struct request *req, struct nvme_command *cmnd) +{ + cmnd->rw.lbat = cpu_to_le16(bio_integrity(req->bio)->app_tag); + cmnd->rw.lbatm = cpu_to_le16(0xffff); +} + static void nvme_set_ref_tag(struct nvme_ns *ns, struct nvme_command *cmnd, struct request *req) { @@ -1025,6 +1031,10 @@ static inline blk_status_t nvme_setup_rw(struct nvme_ns *ns, control |= NVME_RW_APPEND_PIREMAP; nvme_set_ref_tag(ns, cmnd, req); } + if (bio_integrity_flagged(req->bio, BIP_CHECK_APPTAG)) { + control |= NVME_RW_PRINFO_PRCHK_APP; + nvme_set_app_tag(req, cmnd); + } } cmnd->rw.control = cpu_to_le16(control); |