0378b3f1c4
This should help implement suspend/resume in mac80211, these hooks will be run before the device is suspended and after it resumes. Therefore, they can touch the hardware as much as they want to. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Bob Copeland <me@bobcopeland.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
106 lines
2.2 KiB
C
106 lines
2.2 KiB
C
/*
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* This file provides /sys/class/ieee80211/<wiphy name>/
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* and some default attributes.
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*
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* Copyright 2005-2006 Jiri Benc <jbenc@suse.cz>
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* Copyright 2006 Johannes Berg <johannes@sipsolutions.net>
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*
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* This file is GPLv2 as found in COPYING.
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*/
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#include <linux/device.h>
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#include <linux/module.h>
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#include <linux/netdevice.h>
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#include <linux/nl80211.h>
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#include <linux/rtnetlink.h>
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#include <net/cfg80211.h>
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#include "sysfs.h"
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#include "core.h"
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static inline struct cfg80211_registered_device *dev_to_rdev(
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struct device *dev)
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{
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return container_of(dev, struct cfg80211_registered_device, wiphy.dev);
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}
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#define SHOW_FMT(name, fmt, member) \
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static ssize_t name ## _show(struct device *dev, \
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struct device_attribute *attr, \
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char *buf) \
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{ \
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return sprintf(buf, fmt "\n", dev_to_rdev(dev)->member); \
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}
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SHOW_FMT(index, "%d", idx);
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SHOW_FMT(macaddress, "%pM", wiphy.perm_addr);
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static struct device_attribute ieee80211_dev_attrs[] = {
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__ATTR_RO(index),
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__ATTR_RO(macaddress),
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{}
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};
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static void wiphy_dev_release(struct device *dev)
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{
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struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
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cfg80211_dev_free(rdev);
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}
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#ifdef CONFIG_HOTPLUG
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static int wiphy_uevent(struct device *dev, struct kobj_uevent_env *env)
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{
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/* TODO, we probably need stuff here */
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return 0;
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}
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#endif
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static int wiphy_suspend(struct device *dev, pm_message_t state)
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{
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struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
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int ret = 0;
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if (rdev->ops->suspend) {
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rtnl_lock();
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ret = rdev->ops->suspend(&rdev->wiphy);
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rtnl_unlock();
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}
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return ret;
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}
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static int wiphy_resume(struct device *dev)
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{
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struct cfg80211_registered_device *rdev = dev_to_rdev(dev);
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int ret = 0;
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if (rdev->ops->resume) {
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rtnl_lock();
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ret = rdev->ops->resume(&rdev->wiphy);
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rtnl_unlock();
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}
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return ret;
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}
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struct class ieee80211_class = {
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.name = "ieee80211",
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.owner = THIS_MODULE,
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.dev_release = wiphy_dev_release,
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.dev_attrs = ieee80211_dev_attrs,
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#ifdef CONFIG_HOTPLUG
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.dev_uevent = wiphy_uevent,
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#endif
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.suspend = wiphy_suspend,
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.resume = wiphy_resume,
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};
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int wiphy_sysfs_init(void)
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{
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return class_register(&ieee80211_class);
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}
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void wiphy_sysfs_exit(void)
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{
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class_unregister(&ieee80211_class);
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}
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