net/ieee802154/sysfs.c

Source file repositories/reference/linux-study-clean/net/ieee802154/sysfs.c

File Facts

System
Linux kernel
Corpus path
net/ieee802154/sysfs.c
Extension
.c
Size
2230 bytes
Lines
112
Domain
Networking Core
Bucket
Sockets, Protocols, Packet Path, And Network Policy
Inferred role
Networking Core: implementation source
Status
source implementation candidate

Why This File Exists

Networking stack implementation surface: socket APIs, protocol dispatch, packet flow, routing, filtering, and network namespaces.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0-only
/*
 *
 * Authors:
 * Alexander Aring <aar@pengutronix.de>
 *
 * Based on: net/wireless/sysfs.c
 */

#include <linux/device.h>
#include <linux/rtnetlink.h>

#include <net/cfg802154.h>

#include "core.h"
#include "sysfs.h"
#include "rdev-ops.h"

static inline struct cfg802154_registered_device *
dev_to_rdev(struct device *dev)
{
	return container_of(dev, struct cfg802154_registered_device,
			    wpan_phy.dev);
}

#define SHOW_FMT(name, fmt, member)					\
static ssize_t name ## _show(struct device *dev,			\
			     struct device_attribute *attr,		\
			     char *buf)					\
{									\
	return sprintf(buf, fmt "\n", dev_to_rdev(dev)->member);	\
}									\
static DEVICE_ATTR_RO(name)

SHOW_FMT(index, "%d", wpan_phy_idx);

static ssize_t name_show(struct device *dev,
			 struct device_attribute *attr,
			 char *buf)
{
	struct wpan_phy *wpan_phy = &dev_to_rdev(dev)->wpan_phy;

	return sprintf(buf, "%s\n", dev_name(&wpan_phy->dev));
}
static DEVICE_ATTR_RO(name);

static void wpan_phy_release(struct device *dev)
{
	struct cfg802154_registered_device *rdev = dev_to_rdev(dev);

	cfg802154_dev_free(rdev);
}

static struct attribute *pmib_attrs[] = {
	&dev_attr_index.attr,
	&dev_attr_name.attr,
	NULL,
};
ATTRIBUTE_GROUPS(pmib);

#ifdef CONFIG_PM_SLEEP
static int wpan_phy_suspend(struct device *dev)
{
	struct cfg802154_registered_device *rdev = dev_to_rdev(dev);
	int ret = 0;

	if (rdev->ops->suspend) {
		rtnl_lock();
		ret = rdev_suspend(rdev);
		rtnl_unlock();
	}

	return ret;
}

static int wpan_phy_resume(struct device *dev)
{
	struct cfg802154_registered_device *rdev = dev_to_rdev(dev);
	int ret = 0;

	if (rdev->ops->resume) {
		rtnl_lock();
		ret = rdev_resume(rdev);
		rtnl_unlock();
	}

	return ret;
}

static SIMPLE_DEV_PM_OPS(wpan_phy_pm_ops, wpan_phy_suspend, wpan_phy_resume);

Annotation

Implementation Notes