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" 19 20 static inline struct cfg80211_registered_device *dev_to_rdev( 21 struct device *dev) 22 { 23 return container_of(dev, struct cfg80211_registered_device, wiphy.dev); 24 } 25 26 #define SHOW_FMT(name, fmt, member) \ 27 static ssize_t name ## _show(struct device *dev, \ 28 struct device_attribute *attr, \ 29 char *buf) \ 30 { \ 31 return sprintf(buf, fmt "\n", dev_to_rdev(dev)->member); \ 32 } 33 34 SHOW_FMT(index, "%d", wiphy_idx); 35 SHOW_FMT(macaddress, "%pM", wiphy.perm_addr); 36 SHOW_FMT(address_mask, "%pM", wiphy.addr_mask); 37 38 static ssize_t addresses_show(struct device *dev, 39 struct device_attribute *attr, 40 char *buf) 41 { 42 struct wiphy *wiphy = &dev_to_rdev(dev)->wiphy; 43 char *start = buf; 44 int i; 45 46 if (!wiphy->addresses) 47 return sprintf(buf, "%pM\n", wiphy->perm_addr); 48 49 for (i = 0; i < wiphy->n_addresses; i++) 50 buf += sprintf(buf, "%pM\n", &wiphy->addresses[i].addr); 51 52 return buf - start; 53 } 54 55 static struct device_attribute ieee80211_dev_attrs[] = { 56 __ATTR_RO(index), 57 __ATTR_RO(macaddress), 58 __ATTR_RO(address_mask), 59 __ATTR_RO(addresses), 60 {} 61 }; 62 63 static void wiphy_dev_release(struct device *dev) 64 { 65 struct cfg80211_registered_device *rdev = dev_to_rdev(dev); 66 67 cfg80211_dev_free(rdev); 68 } 69 70 #ifdef CONFIG_HOTPLUG 71 static int wiphy_uevent(struct device *dev, struct kobj_uevent_env *env) 72 { 73 /* TODO, we probably need stuff here */ 74 return 0; 75 } 76 #endif 77 78 static int wiphy_suspend(struct device *dev, pm_message_t state) 79 { 80 struct cfg80211_registered_device *rdev = dev_to_rdev(dev); 81 int ret = 0; 82 83 rdev->suspend_at = get_seconds(); 84 85 if (rdev->ops->suspend) { 86 rtnl_lock(); 87 ret = rdev->ops->suspend(&rdev->wiphy); 88 rtnl_unlock(); 89 } 90 91 return ret; 92 } 93 94 static int wiphy_resume(struct device *dev) 95 { 96 struct cfg80211_registered_device *rdev = dev_to_rdev(dev); 97 int ret = 0; 98 99 /* Age scan results with time spent in suspend */ 100 spin_lock_bh(&rdev->bss_lock); 101 cfg80211_bss_age(rdev, get_seconds() - rdev->suspend_at); 102 spin_unlock_bh(&rdev->bss_lock); 103 104 if (rdev->ops->resume) { 105 rtnl_lock(); 106 ret = rdev->ops->resume(&rdev->wiphy); 107 rtnl_unlock(); 108 } 109 110 return ret; 111 } 112 113 struct class ieee80211_class = { 114 .name = "ieee80211", 115 .owner = THIS_MODULE, 116 .dev_release = wiphy_dev_release, 117 .dev_attrs = ieee80211_dev_attrs, 118 #ifdef CONFIG_HOTPLUG 119 .dev_uevent = wiphy_uevent, 120 #endif 121 .suspend = wiphy_suspend, 122 .resume = wiphy_resume, 123 }; 124 125 int wiphy_sysfs_init(void) 126 { 127 return class_register(&ieee80211_class); 128 } 129 130 void wiphy_sysfs_exit(void) 131 { 132 class_unregister(&ieee80211_class); 133 } 134