nvme-core: add method to check for an I/O controller

Kamaljit Singh · keithbusch · commit a5b852797411 · 2025-09-23T15:38:28.000-07:00
Add nvme_is_io_ctrl() to check if the controller is of type I/O
controller. Uses negative logic by excluding an administrative
controller and a discovery controller.

Signed-off-by: Kamaljit Singh &lt;kamaljit.singh@opensource.wdc.com&gt;
Reviewed-by: Hannes Reinecke &lt;hare@suse.de&gt;
Signed-off-by: Keith Busch &lt;kbusch@kernel.org&gt;
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
@@ -3163,6 +3163,11 @@ static inline bool nvme_admin_ctrl(struct nvme_ctrl *ctrl)
 	return ctrl->cntrltype == NVME_CTRL_ADMIN;
 }
 
+static inline bool nvme_is_io_ctrl(struct nvme_ctrl *ctrl)
+{
+	return !nvme_discovery_ctrl(ctrl) && !nvme_admin_ctrl(ctrl);
+}
+
 static bool nvme_validate_cntlid(struct nvme_subsystem *subsys,
 		struct nvme_ctrl *ctrl, struct nvme_id_ctrl *id)
 {

Original file line number	Diff line number	Diff line change
`@@ -3163,6 +3163,11 @@ static inline bool nvme_admin_ctrl(struct nvme_ctrl *ctrl)`
`3163`	`3163`	`return ctrl->cntrltype == NVME_CTRL_ADMIN;`
`3164`	`3164`	`}`
`3165`	`3165`
	`3166`	`+static inline bool nvme_is_io_ctrl(struct nvme_ctrl *ctrl)`
	`3167`	`+{`
	`3168`	`+ return !nvme_discovery_ctrl(ctrl) && !nvme_admin_ctrl(ctrl);`
	`3169`	`+}`
	`3170`	`+`
`3166`	`3171`	`static bool nvme_validate_cntlid(struct nvme_subsystem *subsys,`
`3167`	`3172`	`struct nvme_ctrl ctrl, struct nvme_id_ctrl id)`
`3168`	`3173`	`{`