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| author | Logan Gunthorpe <logang@deltatee.com> | 2020-07-24 20:25:18 +0300 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2020-07-29 08:45:21 +0300 |
| commit | ba76af676cd0514614b5a99b8adad9d3956f5d7d (patch) | |
| tree | cb73c45aba647d8ad753e2668231da5b90b510f6 /drivers/nvme/target/nvmet.h | |
| parent | c1fef73f793b7fd9d2ffcb5ef85807ea55bf7adb (diff) | |
| download | linux-ba76af676cd0514614b5a99b8adad9d3956f5d7d.tar.xz | |
nvmet: Add passthru enable/disable helpers
This patch adds helper functions which are used in the NVMeOF configfs
when the user is configuring the passthru subsystem. Here we ensure
that only one subsys is assigned to each nvme_ctrl by using an xarray
on the cntlid.
The subsystem's version number is overridden by the passed through
controller's version. However, if that version is less than 1.2.1,
then we bump the advertised version to that and print a warning
in dmesg.
Based-on-a-patch-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/nvme/target/nvmet.h')
| -rw-r--r-- | drivers/nvme/target/nvmet.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/nvme/target/nvmet.h b/drivers/nvme/target/nvmet.h index 51719dc62083..9d0aa6560c0c 100644 --- a/drivers/nvme/target/nvmet.h +++ b/drivers/nvme/target/nvmet.h @@ -21,6 +21,8 @@ #include <linux/radix-tree.h> #include <linux/t10-pi.h> +#define NVMET_DEFAULT_VS NVME_VS(1, 3, 0) + #define NVMET_ASYNC_EVENTS 4 #define NVMET_ERROR_LOG_SLOTS 128 #define NVMET_NO_ERROR_LOC ((u16)-1) @@ -245,6 +247,7 @@ struct nvmet_subsys { #ifdef CONFIG_NVME_TARGET_PASSTHRU struct nvme_ctrl *passthru_ctrl; + char *passthru_ctrl_path; #endif /* CONFIG_NVME_TARGET_PASSTHRU */ }; @@ -544,6 +547,9 @@ static inline u32 nvmet_dsm_len(struct nvmet_req *req) } #ifdef CONFIG_NVME_TARGET_PASSTHRU +void nvmet_passthru_subsys_free(struct nvmet_subsys *subsys); +int nvmet_passthru_ctrl_enable(struct nvmet_subsys *subsys); +void nvmet_passthru_ctrl_disable(struct nvmet_subsys *subsys); u16 nvmet_parse_passthru_admin_cmd(struct nvmet_req *req); u16 nvmet_parse_passthru_io_cmd(struct nvmet_req *req); static inline struct nvme_ctrl *nvmet_passthru_ctrl(struct nvmet_subsys *subsys) @@ -551,6 +557,12 @@ static inline struct nvme_ctrl *nvmet_passthru_ctrl(struct nvmet_subsys *subsys) return subsys->passthru_ctrl; } #else /* CONFIG_NVME_TARGET_PASSTHRU */ +static inline void nvmet_passthru_subsys_free(struct nvmet_subsys *subsys) +{ +} +static inline void nvmet_passthru_ctrl_disable(struct nvmet_subsys *subsys) +{ +} static inline u16 nvmet_parse_passthru_admin_cmd(struct nvmet_req *req) { return 0; |