diff options
| author |   Jay Sternberg <jay.e.sternberg@intel.com> | 2018-11-12 13:56:33 -0800 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2018-12-07 22:26:56 -0700 |
| commit | 6c8312ad509c3aaaa8720fee7abe45b813cd4d87 (patch) | |
| tree | c498323eae6a8bb90c4272c8da82fd6a82d75263 /drivers/nvme/target/nvmet.h | |
| parent | nvmet: use IOCB_NOWAIT for file-ns buffered I/O (diff) | |
| download | linux-dev-6c8312ad509c3aaaa8720fee7abe45b813cd4d87.tar.xz linux-dev-6c8312ad509c3aaaa8720fee7abe45b813cd4d87.zip | |
nvmet: provide aen bit functions for multiple controller types
Move nvmet_aen_disabled and nvmet_clear_aen in preparation for other types
of controllers to use, initially the discovery controller.
Signed-off-by: Jay Sternberg <jay.e.sternberg@intel.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to '')
| -rw-r--r-- | drivers/nvme/target/nvmet.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/nvme/target/nvmet.h b/drivers/nvme/target/nvmet.h index 860218edeb6c..7efee345d467 100644 --- a/drivers/nvme/target/nvmet.h +++ b/drivers/nvme/target/nvmet.h @@ -342,6 +342,21 @@ struct nvmet_async_event { u8 log_page; }; +static inline void nvmet_clear_aen(struct nvmet_req *req, u32 aen_bit) +{ + int rae = le32_to_cpu(req->cmd->common.cdw10[0]) & 1 << 15; + + if (!rae) + clear_bit(aen_bit, &req->sq->ctrl->aen_masked); +} + +static inline bool nvmet_aen_disabled(struct nvmet_ctrl *ctrl, u32 aen) +{ + if (!(READ_ONCE(ctrl->aen_enabled) & aen)) + return true; + return test_and_set_bit(aen, &ctrl->aen_masked); +} + u16 nvmet_parse_connect_cmd(struct nvmet_req *req); u16 nvmet_bdev_parse_io_cmd(struct nvmet_req *req); u16 nvmet_file_parse_io_cmd(struct nvmet_req *req); |