diff options
| author | Mark Ruijter <MRuijter@onestopsystems.com> | 2020-01-30 21:29:32 +0300 |
|---|---|---|
| committer | Keith Busch <kbusch@kernel.org> | 2020-03-04 20:09:08 +0300 |
| commit | 013b7ebe5a0d70e2a02fd225174595e79c591b3e (patch) | |
| tree | a438eba4b322b47b75bed41d4106df46a080a4d3 /drivers/nvme/target/admin-cmd.c | |
| parent | 94a39d61f80fcd679debda11e1ca02b88d90e67e (diff) | |
| download | linux-013b7ebe5a0d70e2a02fd225174595e79c591b3e.tar.xz | |
nvmet: make ctrl model configurable
This patch adds a new target subsys attribute which allows user to
optionally specify model name which then used in the
nvmet_execute_identify_ctrl() to fill up the nvme_id_ctrl structure.
The default value for the model is set to "Linux" for backward
compatibility.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Mark Ruijter <MRuijter@onestopsystems.com>
[chaitanya.kulkarni@wdc.com
*Use macro for default model, coding style fixes.
*Use RCU for accessing model in for configfs and in
nvmet_execute_identify_ctrl().
]
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Diffstat (limited to 'drivers/nvme/target/admin-cmd.c')
| -rw-r--r-- | drivers/nvme/target/admin-cmd.c | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/drivers/nvme/target/admin-cmd.c b/drivers/nvme/target/admin-cmd.c index 72a7e41f3018..19f949570625 100644 --- a/drivers/nvme/target/admin-cmd.c +++ b/drivers/nvme/target/admin-cmd.c @@ -322,12 +322,25 @@ static void nvmet_execute_get_log_page(struct nvmet_req *req) nvmet_req_complete(req, NVME_SC_INVALID_FIELD | NVME_SC_DNR); } +static void nvmet_id_set_model_number(struct nvme_id_ctrl *id, + struct nvmet_subsys *subsys) +{ + const char *model = NVMET_DEFAULT_CTRL_MODEL; + struct nvmet_subsys_model *subsys_model; + + rcu_read_lock(); + subsys_model = rcu_dereference(subsys->model); + if (subsys_model) + model = subsys_model->number; + memcpy_and_pad(id->mn, sizeof(id->mn), model, strlen(model), ' '); + rcu_read_unlock(); +} + static void nvmet_execute_identify_ctrl(struct nvmet_req *req) { struct nvmet_ctrl *ctrl = req->sq->ctrl; struct nvme_id_ctrl *id; u16 status = 0; - const char model[] = "Linux"; id = kzalloc(sizeof(*id), GFP_KERNEL); if (!id) { @@ -342,7 +355,7 @@ static void nvmet_execute_identify_ctrl(struct nvmet_req *req) memset(id->sn, ' ', sizeof(id->sn)); bin2hex(id->sn, &ctrl->subsys->serial, min(sizeof(ctrl->subsys->serial), sizeof(id->sn) / 2)); - memcpy_and_pad(id->mn, sizeof(id->mn), model, sizeof(model) - 1, ' '); + nvmet_id_set_model_number(id, ctrl->subsys); memcpy_and_pad(id->fr, sizeof(id->fr), UTS_RELEASE, strlen(UTS_RELEASE), ' '); |