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 #include "rdev-ops.h" 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 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); \ 33 } 34 35 SHOW_FMT(index, "%d", wiphy_idx); 36 SHOW_FMT(macaddress, "%pM", wiphy.perm_addr); 37 SHOW_FMT(address_mask, "%pM", wiphy.addr_mask); 38 39 static ssize_t name_show(struct device *dev, 40 struct device_attribute *attr, 41 char *buf) { 42 struct wiphy *wiphy = &dev_to_rdev(dev)->wiphy; 43 return sprintf(buf, "%s\n", dev_name(&wiphy->dev)); 44 } 45 46 47 static ssize_t addresses_show(struct device *dev, 48 struct device_attribute *attr, 49 char *buf) 50 { 51 struct wiphy *wiphy = &dev_to_rdev(dev)->wiphy; 52 char *start = buf; 53 int i; 54 55 if (!wiphy->addresses) 56 return sprintf(buf, "%pM\n", wiphy->perm_addr); 57 58 for (i = 0; i < wiphy->n_addresses; i++) 59 buf += sprintf(buf, "%pM\n", &wiphy->addresses[i].addr); 60 61 return buf - start; 62 } 63 64 static struct device_attribute ieee80211_dev_attrs[] = { 65 __ATTR_RO(index), 66 __ATTR_RO(macaddress), 67 __ATTR_RO(address_mask), 68 __ATTR_RO(addresses), 69 __ATTR_RO(name), 70 {} 71 }; 72 73 static void wiphy_dev_release(struct device *dev) 74 { 75 struct cfg80211_registered_device *rdev = dev_to_rdev(dev); 76 77 cfg80211_dev_free(rdev); 78 } 79 80 static int wiphy_uevent(struct device *dev, struct kobj_uevent_env *env) 81 { 82 /* TODO, we probably need stuff here */ 83 return 0; 84 } 85 86 static int wiphy_suspend(struct device *dev, pm_message_t state) 87 { 88 struct cfg80211_registered_device *rdev = dev_to_rdev(dev); 89 int ret = 0; 90 91 rdev->suspend_at = get_seconds(); 92 93 if (rdev->ops->suspend) { 94 rtnl_lock(); 95 if (rdev->wiphy.registered) 96 ret = rdev_suspend(rdev); 97 rtnl_unlock(); 98 } 99 100 return ret; 101 } 102 103 static int wiphy_resume(struct device *dev) 104 { 105 struct cfg80211_registered_device *rdev = dev_to_rdev(dev); 106 int ret = 0; 107 108 /* Age scan results with time spent in suspend */ 109 spin_lock_bh(&rdev->bss_lock); 110 cfg80211_bss_age(rdev, get_seconds() - rdev->suspend_at); 111 spin_unlock_bh(&rdev->bss_lock); 112 113 if (rdev->ops->resume) { 114 rtnl_lock(); 115 if (rdev->wiphy.registered) 116 ret = rdev_resume(rdev); 117 rtnl_unlock(); 118 } 119 120 return ret; 121 } 122 123 static const void *wiphy_namespace(struct device *d) 124 { 125 struct wiphy *wiphy = container_of(d, struct wiphy, dev); 126 127 return wiphy_net(wiphy); 128 } 129 130 struct class ieee80211_class = { 131 .name = "ieee80211", 132 .owner = THIS_MODULE, 133 .dev_release = wiphy_dev_release, 134 .dev_attrs = ieee80211_dev_attrs, 135 .dev_uevent = wiphy_uevent, 136 .suspend = wiphy_suspend, 137 .resume = wiphy_resume, 138 .ns_type = &net_ns_type_operations, 139 .namespace = wiphy_namespace, 140 }; 141 142 int wiphy_sysfs_init(void) 143 { 144 return class_register(&ieee80211_class); 145 } 146 147 void wiphy_sysfs_exit(void) 148 { 149 class_unregister(&ieee80211_class); 150 } 151