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

/*
 * 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>
 *
 * This file is GPLv2 as found in COPYING.
 */

#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 = get_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, get_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
704232c2 JB	1	/*
	2	* This file provides /sys/class/ieee80211/<wiphy name>/
	3	* and some default attributes.
	4	*
	5	* Copyright 2005-2006 Jiri Benc <jbenc@suse.cz>
	6	* Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
	7	*
	8	* This file is GPLv2 as found in COPYING.
	9	*/
	10
	11	#include <linux/device.h>
	12	#include <linux/module.h>
	13	#include <linux/netdevice.h>
	14	#include <linux/nl80211.h>
	15	#include <linux/rtnetlink.h>
	16	#include <net/cfg80211.h>
	17	#include "sysfs.h"
	18	#include "core.h"
e35e4d28	19	#include "rdev-ops.h"
704232c2 JB	20
	21	static inline struct cfg80211_registered_device *dev_to_rdev(
	22	struct device *dev)
	23	{
	24	return container_of(dev, struct cfg80211_registered_device, wiphy.dev);
	25	}
	26
4f6d4d1e JB	27	#define SHOW_FMT(name, fmt, member) \
	28	static ssize_t name ## _show(struct device *dev, \
	29	struct device_attribute *attr, \
	30	char *buf) \
	31	{ \
	32	return sprintf(buf, fmt "\n", dev_to_rdev(dev)->member); \
f0bc99c8 GKH	33	} \
f0bc99c8 GKH	34	static DEVICE_ATTR_RO(name)
704232c2	35
b5850a7a	36	SHOW_FMT(index, "%d", wiphy_idx);
4f6d4d1e	37	SHOW_FMT(macaddress, "%pM", wiphy.perm_addr);
ef15aac6 JB	38	SHOW_FMT(address_mask, "%pM", wiphy.addr_mask);
ef15aac6 JB	39
cfd8e12f BG	40	static ssize_t name_show(struct device *dev,
cfd8e12f BG	41	struct device_attribute *attr,
5ec71dd7 JB	42	char *buf)
5ec71dd7 JB	43	{
cfd8e12f	44	struct wiphy *wiphy = &dev_to_rdev(dev)->wiphy;
5ec71dd7 JB	45
5ec71dd7 JB	46	return sprintf(buf, "%s\n", wiphy_name(wiphy));
cfd8e12f	47	}
f0bc99c8	48	static DEVICE_ATTR_RO(name);
cfd8e12f	49
ef15aac6 JB	50	static ssize_t addresses_show(struct device *dev,
	51	struct device_attribute *attr,
	52	char *buf)
	53	{
	54	struct wiphy *wiphy = &dev_to_rdev(dev)->wiphy;
	55	char *start = buf;
	56	int i;
	57
	58	if (!wiphy->addresses)
	59	return sprintf(buf, "%pM\n", wiphy->perm_addr);
	60
	61	for (i = 0; i < wiphy->n_addresses; i++)
ec53c832	62	buf += sprintf(buf, "%pM\n", wiphy->addresses[i].addr);
ef15aac6 JB	63
	64	return buf - start;
	65	}
f0bc99c8 GKH	66	static DEVICE_ATTR_RO(addresses);
	67
	68	static struct attribute *ieee80211_attrs[] = {
	69	&dev_attr_index.attr,
	70	&dev_attr_macaddress.attr,
	71	&dev_attr_address_mask.attr,
	72	&dev_attr_addresses.attr,
	73	&dev_attr_name.attr,
	74	NULL,
704232c2	75	};
f0bc99c8	76	ATTRIBUTE_GROUPS(ieee80211);
704232c2 JB	77
	78	static void wiphy_dev_release(struct device *dev)
	79	{
	80	struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
	81
	82	cfg80211_dev_free(rdev);
	83	}
	84
7eff2e7a	85	static int wiphy_uevent(struct device dev, struct kobj_uevent_env env)
704232c2 JB	86	{
	87	/* TODO, we probably need stuff here */
	88	return 0;
	89	}
	90
262918d8	91	#ifdef CONFIG_PM_SLEEP
81256969 SG	92	static void cfg80211_leave_all(struct cfg80211_registered_device *rdev)
	93	{
	94	struct wireless_dev *wdev;
	95
53873f13	96	list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list)
81256969 SG	97	cfg80211_leave(rdev, wdev);
	98	}
	99
262918d8	100	static int wiphy_suspend(struct device *dev)
0378b3f1 JB	101	{
	102	struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
	103	int ret = 0;
	104
cb3a8eec DW	105	rdev->suspend_at = get_seconds();
cb3a8eec DW	106
81256969 SG	107	rtnl_lock();
81256969 SG	108	if (rdev->wiphy.registered) {
e1957dba	109	if (!rdev->wiphy.wowlan_config) {
81256969	110	cfg80211_leave_all(rdev);
e1957dba JB	111	cfg80211_process_rdev_events(rdev);
e1957dba JB	112	}
81256969	113	if (rdev->ops->suspend)
6abb9cb9	114	ret = rdev_suspend(rdev, rdev->wiphy.wowlan_config);
81256969 SG	115	if (ret == 1) {
	116	/* Driver refuse to configure wowlan */
	117	cfg80211_leave_all(rdev);
e1957dba	118	cfg80211_process_rdev_events(rdev);
81256969 SG	119	ret = rdev_suspend(rdev, NULL);
81256969 SG	120	}
0378b3f1	121	}
81256969	122	rtnl_unlock();
0378b3f1 JB	123
	124	return ret;
	125	}
	126
	127	static int wiphy_resume(struct device *dev)
	128	{
	129	struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
	130	int ret = 0;
	131
cb3a8eec	132	/* Age scan results with time spent in suspend */
cb3a8eec	133	cfg80211_bss_age(rdev, get_seconds() - rdev->suspend_at);
cb3a8eec	134
b3ef5520 AVS	135	rtnl_lock();
	136	if (rdev->wiphy.registered && rdev->ops->resume)
	137	ret = rdev_resume(rdev);
	138	rtnl_unlock();
0378b3f1 JB	139
	140	return ret;
	141	}
262918d8 LPC	142
	143	static SIMPLE_DEV_PM_OPS(wiphy_pm_ops, wiphy_suspend, wiphy_resume);
	144	#define WIPHY_PM_OPS (&wiphy_pm_ops)
	145	#else
	146	#define WIPHY_PM_OPS NULL
6abb9cb9	147	#endif
0378b3f1	148
04600794 JB	149	static const void wiphy_namespace(struct device d)
	150	{
	151	struct wiphy *wiphy = container_of(d, struct wiphy, dev);
	152
	153	return wiphy_net(wiphy);
	154	}
	155
704232c2 JB	156	struct class ieee80211_class = {
	157	.name = "ieee80211",
	158	.owner = THIS_MODULE,
	159	.dev_release = wiphy_dev_release,
f0bc99c8	160	.dev_groups = ieee80211_groups,
704232c2	161	.dev_uevent = wiphy_uevent,
262918d8	162	.pm = WIPHY_PM_OPS,
04600794 JB	163	.ns_type = &net_ns_type_operations,
04600794 JB	164	.namespace = wiphy_namespace,
704232c2 JB	165	};
	166
	167	int wiphy_sysfs_init(void)
	168	{
	169	return class_register(&ieee80211_class);
	170	}
	171
	172	void wiphy_sysfs_exit(void)
	173	{
	174	class_unregister(&ieee80211_class);
	175	}