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| author | Israel Rukshin <israelr@mellanox.com> | 2020-05-19 17:06:02 +0300 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2020-05-27 07:12:40 +0200 |
| commit | c6e3f13398123a008cd2ee28f93510b113a32791 (patch) | |
| tree | 25e54f60c424613f810b29a343621ba4326e4a78 /drivers/nvme/target/nvmet.h | |
| parent | ea52ac1c6605fbd25347fabf46233e260dd92eb2 (diff) | |
| download | linux-c6e3f13398123a008cd2ee28f93510b113a32791.tar.bz2 | |
nvmet: add metadata support for block devices
Allocate the metadata SGL buffers and set metadata fields for the
request. Then create a block IO request for the metadata from the
protection SG list.
Signed-off-by: Israel Rukshin <israelr@mellanox.com>
Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/nvme/target/nvmet.h')
| -rw-r--r-- | drivers/nvme/target/nvmet.h | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/nvme/target/nvmet.h b/drivers/nvme/target/nvmet.h index 46b5d2b4ca0a..809691291e73 100644 --- a/drivers/nvme/target/nvmet.h +++ b/drivers/nvme/target/nvmet.h @@ -309,6 +309,7 @@ struct nvmet_req { struct nvmet_cq *cq; struct nvmet_ns *ns; struct scatterlist *sg; + struct scatterlist *metadata_sg; struct bio_vec inline_bvec[NVMET_MAX_INLINE_BIOVEC]; union { struct { @@ -322,8 +323,10 @@ struct nvmet_req { } f; }; int sg_cnt; + int metadata_sg_cnt; /* data length as parsed from the SGL descriptor: */ size_t transfer_len; + size_t metadata_len; struct nvmet_port *port; @@ -394,8 +397,8 @@ void nvmet_req_uninit(struct nvmet_req *req); bool nvmet_check_transfer_len(struct nvmet_req *req, size_t len); bool nvmet_check_data_len_lte(struct nvmet_req *req, size_t data_len); void nvmet_req_complete(struct nvmet_req *req, u16 status); -int nvmet_req_alloc_sgl(struct nvmet_req *req); -void nvmet_req_free_sgl(struct nvmet_req *req); +int nvmet_req_alloc_sgls(struct nvmet_req *req); +void nvmet_req_free_sgls(struct nvmet_req *req); void nvmet_execute_keep_alive(struct nvmet_req *req); |