[mirror_ubuntu-eoan-kernel.git] / net / wireless / sysfs.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * This file provides /sys/class/ieee80211/<wiphy name>/
 * and some default attributes.
 *
 * Copyright 2005-2006	Jiri Benc <jbenc@suse.cz>
 * Copyright 2006	Johannes Berg <johannes@sipsolutions.net>
 */

#include <linux/device.h>
#include <linux/module.h>
#include <linux/netdevice.h>
#include <linux/nl80211.h>
#include <linux/rtnetlink.h>
#include <net/cfg80211.h>
#include "sysfs.h"
#include "core.h"
#include "rdev-ops.h"

static inline struct cfg80211_registered_device *dev_to_rdev(
	struct device *dev)
{
	return container_of(dev, struct cfg80211_registered_device, wiphy.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", wiphy_idx);
SHOW_FMT(macaddress, "%pM", wiphy.perm_addr);
SHOW_FMT(address_mask, "%pM", wiphy.addr_mask);

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

	return sprintf(buf, "%s\n", wiphy_name(wiphy));
}
static DEVICE_ATTR_RO(name);

static ssize_t addresses_show(struct device *dev,
			      struct device_attribute *attr,
			      char *buf)
{
	struct wiphy *wiphy = &dev_to_rdev(dev)->wiphy;
	char *start = buf;
	int i;

	if (!wiphy->addresses)
		return sprintf(buf, "%pM\n", wiphy->perm_addr);

	for (i = 0; i < wiphy->n_addresses; i++)
		buf += sprintf(buf, "%pM\n", wiphy->addresses[i].addr);

	return buf - start;
}
static DEVICE_ATTR_RO(addresses);

static struct attribute *ieee80211_attrs[] = {
	&dev_attr_index.attr,
	&dev_attr_macaddress.attr,
	&dev_attr_address_mask.attr,
	&dev_attr_addresses.attr,
	&dev_attr_name.attr,
	NULL,
};
ATTRIBUTE_GROUPS(ieee80211);

static void wiphy_dev_release(struct device *dev)
{
	struct cfg80211_registered_device *rdev = dev_to_rdev(dev);

	cfg80211_dev_free(rdev);
}

static int wiphy_uevent(struct device *dev, struct kobj_uevent_env *env)
{
	/* TODO, we probably need stuff here */
	return 0;
}

#ifdef CONFIG_PM_SLEEP
static void cfg80211_leave_all(struct cfg80211_registered_device *rdev)
{
	struct wireless_dev *wdev;

	list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list)
		cfg80211_leave(rdev, wdev);
}

static int wiphy_suspend(struct device *dev)
{
	struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
	int ret = 0;

	rdev->suspend_at = ktime_get_boottime_seconds();

	rtnl_lock();
	if (rdev->wiphy.registered) {
		if (!rdev->wiphy.wowlan_config) {
			cfg80211_leave_all(rdev);
			cfg80211_process_rdev_events(rdev);
		}
		if (rdev->ops->suspend)
			ret = rdev_suspend(rdev, rdev->wiphy.wowlan_config);
		if (ret == 1) {
			/* Driver refuse to configure wowlan */
			cfg80211_leave_all(rdev);
			cfg80211_process_rdev_events(rdev);
			ret = rdev_suspend(rdev, NULL);
		}
	}
	rtnl_unlock();

	return ret;
}

static int wiphy_resume(struct device *dev)
{
	struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
	int ret = 0;

	/* Age scan results with time spent in suspend */
	cfg80211_bss_age(rdev, ktime_get_boottime_seconds() - rdev->suspend_at);

	rtnl_lock();
	if (rdev->wiphy.registered && rdev->ops->resume)
		ret = rdev_resume(rdev);
	rtnl_unlock();

	return ret;
}

static SIMPLE_DEV_PM_OPS(wiphy_pm_ops, wiphy_suspend, wiphy_resume);
#define WIPHY_PM_OPS (&wiphy_pm_ops)
#else
#define WIPHY_PM_OPS NULL
#endif

static const void *wiphy_namespace(struct device *d)
{
	struct wiphy *wiphy = container_of(d, struct wiphy, dev);

	return wiphy_net(wiphy);
}

struct class ieee80211_class = {
	.name = "ieee80211",
	.owner = THIS_MODULE,
	.dev_release = wiphy_dev_release,
	.dev_groups = ieee80211_groups,
	.dev_uevent = wiphy_uevent,
	.pm = WIPHY_PM_OPS,
	.ns_type = &net_ns_type_operations,
	.namespace = wiphy_namespace,
};

int wiphy_sysfs_init(void)
{
	return class_register(&ieee80211_class);
}

void wiphy_sysfs_exit(void)
{
	class_unregister(&ieee80211_class);
}
Commit	Line	Data
28c61a66	1	// SPDX-License-Identifier: GPL-2.0-only
704232c2 JB	2	/*
	3	* This file provides /sys/class/ieee80211/<wiphy name>/
	4	* and some default attributes.
	5	*
	6	* Copyright 2005-2006 Jiri Benc <jbenc@suse.cz>
	7	* Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
704232c2 JB	8	*/
	9
	10	#include <linux/device.h>
	11	#include <linux/module.h>
	12	#include <linux/netdevice.h>
	13	#include <linux/nl80211.h>
	14	#include <linux/rtnetlink.h>
	15	#include <net/cfg80211.h>
	16	#include "sysfs.h"
	17	#include "core.h"
e35e4d28	18	#include "rdev-ops.h"
704232c2 JB	19
	20	static inline struct cfg80211_registered_device *dev_to_rdev(
	21	struct device *dev)
	22	{
	23	return container_of(dev, struct cfg80211_registered_device, wiphy.dev);
	24	}
	25
4f6d4d1e JB	26	#define SHOW_FMT(name, fmt, member) \
	27	static ssize_t name ## _show(struct device *dev, \
	28	struct device_attribute *attr, \
	29	char *buf) \
	30	{ \
	31	return sprintf(buf, fmt "\n", dev_to_rdev(dev)->member); \
f0bc99c8 GKH	32	} \
f0bc99c8 GKH	33	static DEVICE_ATTR_RO(name)
704232c2	34
b5850a7a	35	SHOW_FMT(index, "%d", wiphy_idx);
4f6d4d1e	36	SHOW_FMT(macaddress, "%pM", wiphy.perm_addr);
ef15aac6 JB	37	SHOW_FMT(address_mask, "%pM", wiphy.addr_mask);
ef15aac6 JB	38
cfd8e12f BG	39	static ssize_t name_show(struct device *dev,
cfd8e12f BG	40	struct device_attribute *attr,
5ec71dd7 JB	41	char *buf)
5ec71dd7 JB	42	{
cfd8e12f	43	struct wiphy *wiphy = &dev_to_rdev(dev)->wiphy;
5ec71dd7 JB	44
5ec71dd7 JB	45	return sprintf(buf, "%s\n", wiphy_name(wiphy));
cfd8e12f	46	}
f0bc99c8	47	static DEVICE_ATTR_RO(name);
cfd8e12f	48
ef15aac6 JB	49	static ssize_t addresses_show(struct device *dev,
	50	struct device_attribute *attr,
	51	char *buf)
	52	{
	53	struct wiphy *wiphy = &dev_to_rdev(dev)->wiphy;
	54	char *start = buf;
	55	int i;
	56
	57	if (!wiphy->addresses)
	58	return sprintf(buf, "%pM\n", wiphy->perm_addr);
	59
	60	for (i = 0; i < wiphy->n_addresses; i++)
ec53c832	61	buf += sprintf(buf, "%pM\n", wiphy->addresses[i].addr);
ef15aac6 JB	62
	63	return buf - start;
	64	}
f0bc99c8 GKH	65	static DEVICE_ATTR_RO(addresses);
	66
	67	static struct attribute *ieee80211_attrs[] = {
	68	&dev_attr_index.attr,
	69	&dev_attr_macaddress.attr,
	70	&dev_attr_address_mask.attr,
	71	&dev_attr_addresses.attr,
	72	&dev_attr_name.attr,
	73	NULL,
704232c2	74	};
f0bc99c8	75	ATTRIBUTE_GROUPS(ieee80211);
704232c2 JB	76
	77	static void wiphy_dev_release(struct device *dev)
	78	{
	79	struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
	80
	81	cfg80211_dev_free(rdev);
	82	}
	83
7eff2e7a	84	static int wiphy_uevent(struct device dev, struct kobj_uevent_env env)
704232c2 JB	85	{
	86	/* TODO, we probably need stuff here */
	87	return 0;
	88	}
	89
262918d8	90	#ifdef CONFIG_PM_SLEEP
81256969 SG	91	static void cfg80211_leave_all(struct cfg80211_registered_device *rdev)
	92	{
	93	struct wireless_dev *wdev;
	94
53873f13	95	list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list)
81256969 SG	96	cfg80211_leave(rdev, wdev);
	97	}
	98
262918d8	99	static int wiphy_suspend(struct device *dev)
0378b3f1 JB	100	{
	101	struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
	102	int ret = 0;
	103
fe0984d3	104	rdev->suspend_at = ktime_get_boottime_seconds();
cb3a8eec	105
81256969 SG	106	rtnl_lock();
81256969 SG	107	if (rdev->wiphy.registered) {
e1957dba	108	if (!rdev->wiphy.wowlan_config) {
81256969	109	cfg80211_leave_all(rdev);
e1957dba JB	110	cfg80211_process_rdev_events(rdev);
e1957dba JB	111	}
81256969	112	if (rdev->ops->suspend)
6abb9cb9	113	ret = rdev_suspend(rdev, rdev->wiphy.wowlan_config);
81256969 SG	114	if (ret == 1) {
	115	/* Driver refuse to configure wowlan */
	116	cfg80211_leave_all(rdev);
e1957dba	117	cfg80211_process_rdev_events(rdev);
81256969 SG	118	ret = rdev_suspend(rdev, NULL);
81256969 SG	119	}
0378b3f1	120	}
81256969	121	rtnl_unlock();
0378b3f1 JB	122
	123	return ret;
	124	}
	125
	126	static int wiphy_resume(struct device *dev)
	127	{
	128	struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
	129	int ret = 0;
	130
cb3a8eec	131	/* Age scan results with time spent in suspend */
fe0984d3	132	cfg80211_bss_age(rdev, ktime_get_boottime_seconds() - rdev->suspend_at);
cb3a8eec	133
b3ef5520 AVS	134	rtnl_lock();
	135	if (rdev->wiphy.registered && rdev->ops->resume)
	136	ret = rdev_resume(rdev);
	137	rtnl_unlock();
0378b3f1 JB	138
	139	return ret;
	140	}
262918d8 LPC	141
	142	static SIMPLE_DEV_PM_OPS(wiphy_pm_ops, wiphy_suspend, wiphy_resume);
	143	#define WIPHY_PM_OPS (&wiphy_pm_ops)
	144	#else
	145	#define WIPHY_PM_OPS NULL
6abb9cb9	146	#endif
0378b3f1	147
04600794 JB	148	static const void wiphy_namespace(struct device d)
	149	{
	150	struct wiphy *wiphy = container_of(d, struct wiphy, dev);
	151
	152	return wiphy_net(wiphy);
	153	}
	154
704232c2 JB	155	struct class ieee80211_class = {
	156	.name = "ieee80211",
	157	.owner = THIS_MODULE,
	158	.dev_release = wiphy_dev_release,
f0bc99c8	159	.dev_groups = ieee80211_groups,
704232c2	160	.dev_uevent = wiphy_uevent,
262918d8	161	.pm = WIPHY_PM_OPS,
04600794 JB	162	.ns_type = &net_ns_type_operations,
04600794 JB	163	.namespace = wiphy_namespace,
704232c2 JB	164	};
	165
	166	int wiphy_sysfs_init(void)
	167	{
	168	return class_register(&ieee80211_class);
	169	}
	170
	171	void wiphy_sysfs_exit(void)
	172	{
	173	class_unregister(&ieee80211_class);
	174	}