nvme: send uevent for some asynchronous events
This will give udev a chance to observe and handle asynchronous event
notifications and clear the log to unmask future events of the same type.
The driver will create a change uevent of the asyncronuos event result
before submitting the next AEN request to the device if a completed AEN
event is of type error, smart, command set or vendor specific,
Signed-off-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Guan Junxiong <guanjunxiong@huawei.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index c135d0a..683d890 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -2665,11 +2665,28 @@ void nvme_remove_namespaces(struct nvme_ctrl *ctrl)
}
EXPORT_SYMBOL_GPL(nvme_remove_namespaces);
+static void nvme_aen_uevent(struct nvme_ctrl *ctrl)
+{
+ char *envp[2] = { NULL, NULL };
+ u32 aen_result = ctrl->aen_result;
+
+ ctrl->aen_result = 0;
+ if (!aen_result)
+ return;
+
+ envp[0] = kasprintf(GFP_KERNEL, "NVME_AEN=%#08x", aen_result);
+ if (!envp[0])
+ return;
+ kobject_uevent_env(&ctrl->device->kobj, KOBJ_CHANGE, envp);
+ kfree(envp[0]);
+}
+
static void nvme_async_event_work(struct work_struct *work)
{
struct nvme_ctrl *ctrl =
container_of(work, struct nvme_ctrl, async_event_work);
+ nvme_aen_uevent(ctrl);
ctrl->ops->submit_async_event(ctrl);
}
@@ -2741,6 +2758,17 @@ void nvme_complete_async_event(struct nvme_ctrl *ctrl, __le16 status,
if (le16_to_cpu(status) >> 1 != NVME_SC_SUCCESS)
return;
+ switch (result & 0x7) {
+ case NVME_AER_ERROR:
+ case NVME_AER_SMART:
+ case NVME_AER_CSS:
+ case NVME_AER_VS:
+ ctrl->aen_result = result;
+ break;
+ default:
+ break;
+ }
+
switch (result & 0xff07) {
case NVME_AER_NOTICE_NS_CHANGED:
dev_info(ctrl->device, "rescanning\n");