/* * 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" 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); \ } SHOW_FMT(index, "%d", wiphy_idx); SHOW_FMT(macaddress, "%pM", wiphy.perm_addr); static struct device_attribute ieee80211_dev_attrs[] = { __ATTR_RO(index), __ATTR_RO(macaddress), {} }; static void wiphy_dev_release(struct device *dev) { struct cfg80211_registered_device *rdev = dev_to_rdev(dev); cfg80211_dev_free(rdev); } #ifdef CONFIG_HOTPLUG static int wiphy_uevent(struct device *dev, struct kobj_uevent_env *env) { /* TODO, we probably need stuff here */ return 0; } #endif static int wiphy_suspend(struct device *dev, pm_message_t state) { struct cfg80211_registered_device *rdev = dev_to_rdev(dev); int ret = 0; rdev->suspend_at = get_seconds(); if (rdev->ops->suspend) { rtnl_lock(); ret = rdev->ops->suspend(&rdev->wiphy); 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 */ spin_lock_bh(&rdev->bss_lock); cfg80211_bss_age(rdev, get_seconds() - rdev->suspend_at); spin_unlock_bh(&rdev->bss_lock); if (rdev->ops->resume) { rtnl_lock(); ret = rdev->ops->resume(&rdev->wiphy); rtnl_unlock(); } return ret; } struct class ieee80211_class = { .name = "ieee80211", .owner = THIS_MODULE, .dev_release = wiphy_dev_release, .dev_attrs = ieee80211_dev_attrs, #ifdef CONFIG_HOTPLUG .dev_uevent = wiphy_uevent, #endif .suspend = wiphy_suspend, .resume = wiphy_resume, }; int wiphy_sysfs_init(void) { return class_register(&ieee80211_class); } void wiphy_sysfs_exit(void) { class_unregister(&ieee80211_class); }