30  * DoorbellEntry describes the a doorbell notification handle allocated by the
80  * with a given doorbell handle. For guest endpoints, the
83  * handle. Hypervisor endpoints are not yet supported.
85 int vmci_dbell_get_priv_flags(struct vmci_handle handle, u32 *priv_flags)  in vmci_dbell_get_priv_flags()  argument
87 	if (priv_flags == NULL || handle.context == VMCI_INVALID_ID)  in vmci_dbell_get_priv_flags()
90 	if (handle.context == VMCI_HOST_CONTEXT_ID) {  in vmci_dbell_get_priv_flags()
94 		resource = vmci_resource_by_handle(handle,  in vmci_dbell_get_priv_flags()
102 	} else if (handle.context == VMCI_HYPERVISOR_CONTEXT_ID) {  in vmci_dbell_get_priv_flags()
109 		*priv_flags = vmci_context_get_priv_flags(handle.context);  in vmci_dbell_get_priv_flags()
225  * Creates a link between the given doorbell handle and the given
229 static int dbell_link(struct vmci_handle handle, u32 notify_idx)  in dbell_link()  argument
237 	link_msg.handle = handle;  in dbell_link()
244  * Unlinks the given doorbell handle from an index in the bitmap in
247 static int dbell_unlink(struct vmci_handle handle)  in dbell_unlink()  argument
255 	unlink_msg.handle = handle;  in dbell_unlink()
264 static int dbell_notify_as_guest(struct vmci_handle handle, u32 priv_flags)  in dbell_notify_as_guest()  argument
272 	notify_msg.handle = handle;  in dbell_notify_as_guest()
292 int vmci_dbell_host_context_notify(u32 src_cid, struct vmci_handle handle)  in vmci_dbell_host_context_notify()  argument
297 	if (vmci_handle_is_invalid(handle)) {  in vmci_dbell_host_context_notify()
298 		pr_devel("Notifying an invalid doorbell (handle=0x%x:0x%x)\n",  in vmci_dbell_host_context_notify()
299 			 handle.context, handle.resource);  in vmci_dbell_host_context_notify()
303 	resource = vmci_resource_by_handle(handle,  in vmci_dbell_host_context_notify()
306 		pr_devel("Notifying an unknown doorbell (handle=0x%x:0x%x)\n",  in vmci_dbell_host_context_notify()
307 			 handle.context, handle.resource);  in vmci_dbell_host_context_notify()
394  * @handle:     A handle used to track the resource.  Can be invalid.
400  * Creates a doorbell with the given callback. If the handle is
401  * VMCI_INVALID_HANDLE, a free handle will be assigned, if
409 int vmci_doorbell_create(struct vmci_handle *handle,  in vmci_doorbell_create()  argument
418 	if (!handle || !notify_cb || flags & ~VMCI_FLAG_DELAYED_CB ||  in vmci_doorbell_create()
428 	if (vmci_handle_is_invalid(*handle)) {  in vmci_doorbell_create()
443 		 * Validate the handle.  We must do both of the checks below  in vmci_doorbell_create()
449 		if (handle->context == VMCI_HOST_CONTEXT_ID ||  in vmci_doorbell_create()
451 		     vmci_get_context_id() == handle->context)) {  in vmci_doorbell_create()
455 		if (!valid_context || handle->resource == VMCI_INVALID_ID) {  in vmci_doorbell_create()
456 			pr_devel("Invalid argument (handle=0x%x:0x%x)\n",  in vmci_doorbell_create()
457 				 handle->context, handle->resource);  in vmci_doorbell_create()
462 		new_handle = *handle;  in vmci_doorbell_create()
478 		pr_warn("Failed to add new resource (handle=0x%x:0x%x), error: %d\n",  in vmci_doorbell_create()
493 	*handle = new_handle;  in vmci_doorbell_create()
508  * @handle:     The handle tracking the resource.
513 int vmci_doorbell_destroy(struct vmci_handle handle)  in vmci_doorbell_destroy()  argument
518 	if (vmci_handle_is_invalid(handle))  in vmci_doorbell_destroy()
521 	resource = vmci_resource_by_handle(handle,  in vmci_doorbell_destroy()
524 		pr_devel("Failed to destroy doorbell (handle=0x%x:0x%x)\n",  in vmci_doorbell_destroy()
525 			 handle.context, handle.resource);  in vmci_doorbell_destroy()
536 		result = dbell_unlink(handle);  in vmci_doorbell_destroy()
548 			 * hypervisor side yet. Since the handle has  in vmci_doorbell_destroy()
552 			pr_devel("Unlink of doorbell (handle=0x%x:0x%x) unknown by hypervisor (error=%d)\n",  in vmci_doorbell_destroy()
553 				 handle.context, handle.resource, result);  in vmci_doorbell_destroy()
576  * handle. For host side generation of notifications, the caller