/* * 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); if (rdev->ops->resume) { rtnl_lock(); if (rdev->wiphy.registered) 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); }