kernel

linux-6.8.1/include/linux/transport_class.h

@@ -0,0 +1,107 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * transport_class.h - a generic container for all transport classes
+ *
+ * Copyright (c) 2005 - James Bottomley <James.Bottomley@steeleye.com>
+ */
+
+#ifndef _TRANSPORT_CLASS_H_
+#define _TRANSPORT_CLASS_H_
+
+#include <linux/device.h>
+#include <linux/bug.h>
+#include <linux/attribute_container.h>
+
+struct transport_container;
+
+struct transport_class {
+	struct class class;
+	int (*setup)(struct transport_container *, struct device *,
+		     struct device *);
+	int (*configure)(struct transport_container *, struct device *,
+			 struct device *);
+	int (*remove)(struct transport_container *, struct device *,
+		      struct device *);
+};
+
+#define DECLARE_TRANSPORT_CLASS(cls, nm, su, rm, cfg)			\
+struct transport_class cls = {						\
+	.class = {							\
+		.name = nm,						\
+	},								\
+	.setup = su,							\
+	.remove = rm,							\
+	.configure = cfg,						\
+}
+
+
+struct anon_transport_class {
+	struct transport_class tclass;
+	struct attribute_container container;
+};
+
+#define DECLARE_ANON_TRANSPORT_CLASS(cls, mtch, cfg)		\
+struct anon_transport_class cls = {				\
+	.tclass = {						\
+		.configure = cfg,				\
+	},							\
+	. container = {						\
+		.match = mtch,					\
+	},							\
+}
+
+#define class_to_transport_class(x) \
+	container_of(x, struct transport_class, class)
+
+struct transport_container {
+	struct attribute_container ac;
+	const struct attribute_group *statistics;
+};
+
+#define attribute_container_to_transport_container(x) \
+	container_of(x, struct transport_container, ac)
+
+void transport_remove_device(struct device *);
+int transport_add_device(struct device *);
+void transport_setup_device(struct device *);
+void transport_configure_device(struct device *);
+void transport_destroy_device(struct device *);
+
+static inline int
+transport_register_device(struct device *dev)
+{
+	int ret;
+
+	transport_setup_device(dev);
+	ret = transport_add_device(dev);
+	if (ret)
+		transport_destroy_device(dev);
+
+	return ret;
+}
+
+static inline void
+transport_unregister_device(struct device *dev)
+{
+	transport_remove_device(dev);
+	transport_destroy_device(dev);
+}
+
+static inline int transport_container_register(struct transport_container *tc)
+{
+	return attribute_container_register(&tc->ac);
+}
+
+static inline void transport_container_unregister(struct transport_container *tc)
+{
+	if (unlikely(attribute_container_unregister(&tc->ac)))
+		BUG();
+}
+
+int transport_class_register(struct transport_class *);
+int anon_transport_class_register(struct anon_transport_class *);
+void transport_class_unregister(struct transport_class *);
+void anon_transport_class_unregister(struct anon_transport_class *);
+
+
+#endif