[mirror_ubuntu-zesty-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", dev_name(&wiphy->dev));
}
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,
	41	struct device_attribute *attr,
	42	char *buf) {
	43	struct wiphy *wiphy = &dev_to_rdev(dev)->wiphy;
	44	return sprintf(buf, "%s\n", dev_name(&wiphy->dev));
	45	}
f0bc99c8	46	static DEVICE_ATTR_RO(name);
cfd8e12f	47
ef15aac6 JB	48	static ssize_t addresses_show(struct device *dev,
	49	struct device_attribute *attr,
	50	char *buf)
	51	{
	52	struct wiphy *wiphy = &dev_to_rdev(dev)->wiphy;
	53	char *start = buf;
	54	int i;
	55
	56	if (!wiphy->addresses)
	57	return sprintf(buf, "%pM\n", wiphy->perm_addr);
	58
	59	for (i = 0; i < wiphy->n_addresses; i++)
ec53c832	60	buf += sprintf(buf, "%pM\n", wiphy->addresses[i].addr);
ef15aac6 JB	61
	62	return buf - start;
	63	}
f0bc99c8 GKH	64	static DEVICE_ATTR_RO(addresses);
	65
	66	static struct attribute *ieee80211_attrs[] = {
	67	&dev_attr_index.attr,
	68	&dev_attr_macaddress.attr,
	69	&dev_attr_address_mask.attr,
	70	&dev_attr_addresses.attr,
	71	&dev_attr_name.attr,
	72	NULL,
704232c2	73	};
f0bc99c8	74	ATTRIBUTE_GROUPS(ieee80211);
704232c2 JB	75
	76	static void wiphy_dev_release(struct device *dev)
	77	{
	78	struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
	79
	80	cfg80211_dev_free(rdev);
	81	}
	82
7eff2e7a	83	static int wiphy_uevent(struct device dev, struct kobj_uevent_env env)
704232c2 JB	84	{
	85	/* TODO, we probably need stuff here */
	86	return 0;
	87	}
	88
262918d8	89	#ifdef CONFIG_PM_SLEEP
81256969 SG	90	static void cfg80211_leave_all(struct cfg80211_registered_device *rdev)
	91	{
	92	struct wireless_dev *wdev;
	93
53873f13	94	list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list)
81256969 SG	95	cfg80211_leave(rdev, wdev);
	96	}
	97
262918d8	98	static int wiphy_suspend(struct device *dev)
0378b3f1 JB	99	{
	100	struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
	101	int ret = 0;
	102
cb3a8eec DW	103	rdev->suspend_at = get_seconds();
cb3a8eec DW	104
81256969 SG	105	rtnl_lock();
81256969 SG	106	if (rdev->wiphy.registered) {
e1957dba	107	if (!rdev->wiphy.wowlan_config) {
81256969	108	cfg80211_leave_all(rdev);
e1957dba JB	109	cfg80211_process_rdev_events(rdev);
e1957dba JB	110	}
81256969	111	if (rdev->ops->suspend)
6abb9cb9	112	ret = rdev_suspend(rdev, rdev->wiphy.wowlan_config);
81256969 SG	113	if (ret == 1) {
	114	/* Driver refuse to configure wowlan */
	115	cfg80211_leave_all(rdev);
e1957dba	116	cfg80211_process_rdev_events(rdev);
81256969 SG	117	ret = rdev_suspend(rdev, NULL);
81256969 SG	118	}
0378b3f1	119	}
81256969	120	rtnl_unlock();
0378b3f1 JB	121
	122	return ret;
	123	}
	124
	125	static int wiphy_resume(struct device *dev)
	126	{
	127	struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
	128	int ret = 0;
	129
cb3a8eec	130	/* Age scan results with time spent in suspend */
cb3a8eec	131	cfg80211_bss_age(rdev, get_seconds() - rdev->suspend_at);
cb3a8eec	132
cf67c473 AVS	133	rtnl_lock();
	134	if (rdev->wiphy.registered && rdev->ops->resume)
	135	ret = rdev_resume(rdev);
	136	rtnl_unlock();
0378b3f1 JB	137
	138	return ret;
	139	}
262918d8 LPC	140
	141	static SIMPLE_DEV_PM_OPS(wiphy_pm_ops, wiphy_suspend, wiphy_resume);
	142	#define WIPHY_PM_OPS (&wiphy_pm_ops)
	143	#else
	144	#define WIPHY_PM_OPS NULL
6abb9cb9	145	#endif
0378b3f1	146
04600794 JB	147	static const void wiphy_namespace(struct device d)
	148	{
	149	struct wiphy *wiphy = container_of(d, struct wiphy, dev);
	150
	151	return wiphy_net(wiphy);
	152	}
	153
704232c2 JB	154	struct class ieee80211_class = {
	155	.name = "ieee80211",
	156	.owner = THIS_MODULE,
	157	.dev_release = wiphy_dev_release,
f0bc99c8	158	.dev_groups = ieee80211_groups,
704232c2	159	.dev_uevent = wiphy_uevent,
262918d8	160	.pm = WIPHY_PM_OPS,
04600794 JB	161	.ns_type = &net_ns_type_operations,
04600794 JB	162	.namespace = wiphy_namespace,
704232c2 JB	163	};
	164
	165	int wiphy_sysfs_init(void)
	166	{
	167	return class_register(&ieee80211_class);
	168	}
	169
	170	void wiphy_sysfs_exit(void)
	171	{
	172	class_unregister(&ieee80211_class);
	173	}