diff options
Diffstat (limited to 'net/wireless_ath/core.c')
| -rwxr-xr-x | net/wireless_ath/core.c | 1110 |
1 files changed, 0 insertions, 1110 deletions
diff --git a/net/wireless_ath/core.c b/net/wireless_ath/core.c deleted file mode 100755 index 2c715e6..0000000 --- a/net/wireless_ath/core.c +++ /dev/null @@ -1,1110 +0,0 @@ -/* - * This is the linux wireless configuration interface. - * - * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> - */ - -//#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#include <linux/if.h> -#include <linux/module.h> -#include <linux/err.h> -#include <linux/list.h> -#include <linux/slab.h> -#include <linux/nl80211.h> -#include <linux/debugfs.h> -#include <linux/notifier.h> -#include <linux/device.h> -#include <linux/etherdevice.h> -#include <linux/rtnetlink.h> -#include <linux/sched.h> -#include <net/genetlink.h> -#include <net/cfg80211.h> -#include "nl80211.h" -#include "core.h" -#include "sysfs.h" -#include "debugfs.h" -#include "wext-compat.h" -#include "ethtool.h" - -/* name for sysfs, %d is appended */ -#define PHY_NAME "phy" - -MODULE_AUTHOR("Johannes Berg"); -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("wireless configuration support"); - -/* RCU-protected (and cfg80211_mutex for writers) */ -LIST_HEAD(cfg80211_rdev_list); -int cfg80211_rdev_list_generation; - -DEFINE_MUTEX(cfg80211_mutex); - -/* for debugfs */ -static struct dentry *ieee80211_debugfs_dir; - -/* for the cleanup, scan and event works */ -struct workqueue_struct *cfg80211_wq; - -static bool cfg80211_disable_40mhz_24ghz; -module_param(cfg80211_disable_40mhz_24ghz, bool, 0644); -MODULE_PARM_DESC(cfg80211_disable_40mhz_24ghz, - "Disable 40MHz support in the 2.4GHz band"); - -/* requires cfg80211_mutex to be held! */ -struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx) -{ - struct cfg80211_registered_device *result = NULL, *rdev; - - if (!wiphy_idx_valid(wiphy_idx)) - return NULL; - - assert_cfg80211_lock(); - - list_for_each_entry(rdev, &cfg80211_rdev_list, list) { - if (rdev->wiphy_idx == wiphy_idx) { - result = rdev; - break; - } - } - - return result; -} - -int get_wiphy_idx(struct wiphy *wiphy) -{ - struct cfg80211_registered_device *rdev; - if (!wiphy) - return WIPHY_IDX_STALE; - rdev = wiphy_to_dev(wiphy); - return rdev->wiphy_idx; -} - -/* requires cfg80211_rdev_mutex to be held! */ -struct wiphy *wiphy_idx_to_wiphy(int wiphy_idx) -{ - struct cfg80211_registered_device *rdev; - - if (!wiphy_idx_valid(wiphy_idx)) - return NULL; - - assert_cfg80211_lock(); - - rdev = cfg80211_rdev_by_wiphy_idx(wiphy_idx); - if (!rdev) - return NULL; - return &rdev->wiphy; -} - -/* requires cfg80211_mutex to be held! */ -struct cfg80211_registered_device * -__cfg80211_rdev_from_info(struct genl_info *info) -{ - int ifindex; - struct cfg80211_registered_device *bywiphyidx = NULL, *byifidx = NULL; - struct net_device *dev; - int err = -EINVAL; - - assert_cfg80211_lock(); - - if (info->attrs[NL80211_ATTR_WIPHY]) { - bywiphyidx = cfg80211_rdev_by_wiphy_idx( - nla_get_u32(info->attrs[NL80211_ATTR_WIPHY])); - err = -ENODEV; - } - - if (info->attrs[NL80211_ATTR_IFINDEX]) { - ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]); - dev = dev_get_by_index(genl_info_net(info), ifindex); - if (dev) { - if (dev->ieee80211_ptr) - byifidx = - wiphy_to_dev(dev->ieee80211_ptr->wiphy); - dev_put(dev); - } - err = -ENODEV; - } - - if (bywiphyidx && byifidx) { - if (bywiphyidx != byifidx) - return ERR_PTR(-EINVAL); - else - return bywiphyidx; /* == byifidx */ - } - if (bywiphyidx) - return bywiphyidx; - - if (byifidx) - return byifidx; - - return ERR_PTR(err); -} - -struct cfg80211_registered_device * -cfg80211_get_dev_from_info(struct genl_info *info) -{ - struct cfg80211_registered_device *rdev; - - mutex_lock(&cfg80211_mutex); - rdev = __cfg80211_rdev_from_info(info); - - /* if it is not an error we grab the lock on - * it to assure it won't be going away while - * we operate on it */ - if (!IS_ERR(rdev)) - mutex_lock(&rdev->mtx); - - mutex_unlock(&cfg80211_mutex); - - return rdev; -} - -struct cfg80211_registered_device * -cfg80211_get_dev_from_ifindex(struct net *net, int ifindex) -{ - struct cfg80211_registered_device *rdev = ERR_PTR(-ENODEV); - struct net_device *dev; - - mutex_lock(&cfg80211_mutex); - dev = dev_get_by_index(net, ifindex); - if (!dev) - goto out; - if (dev->ieee80211_ptr) { - rdev = wiphy_to_dev(dev->ieee80211_ptr->wiphy); - mutex_lock(&rdev->mtx); - } else - rdev = ERR_PTR(-ENODEV); - dev_put(dev); - out: - mutex_unlock(&cfg80211_mutex); - return rdev; -} - -/* requires cfg80211_mutex to be held */ -int cfg80211_dev_rename(struct cfg80211_registered_device *rdev, - char *newname) -{ - struct cfg80211_registered_device *rdev2; - int wiphy_idx, taken = -1, result, digits; - - assert_cfg80211_lock(); - - /* prohibit calling the thing phy%d when %d is not its number */ - sscanf(newname, PHY_NAME "%d%n", &wiphy_idx, &taken); - if (taken == strlen(newname) && wiphy_idx != rdev->wiphy_idx) { - /* count number of places needed to print wiphy_idx */ - digits = 1; - while (wiphy_idx /= 10) - digits++; - /* - * deny the name if it is phy<idx> where <idx> is printed - * without leading zeroes. taken == strlen(newname) here - */ - if (taken == strlen(PHY_NAME) + digits) - return -EINVAL; - } - - - /* Ignore nop renames */ - if (strcmp(newname, dev_name(&rdev->wiphy.dev)) == 0) - return 0; - - /* Ensure another device does not already have this name. */ - list_for_each_entry(rdev2, &cfg80211_rdev_list, list) - if (strcmp(newname, dev_name(&rdev2->wiphy.dev)) == 0) - return -EINVAL; - - result = device_rename(&rdev->wiphy.dev, newname); - if (result) - return result; - - if (rdev->wiphy.debugfsdir && - !debugfs_rename(rdev->wiphy.debugfsdir->d_parent, - rdev->wiphy.debugfsdir, - rdev->wiphy.debugfsdir->d_parent, - newname)) - pr_err("failed to rename debugfs dir to %s!\n", newname); - - nl80211_notify_dev_rename(rdev); - - return 0; -} - -#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24)) -int cfg80211_switch_netns(struct cfg80211_registered_device *rdev, - struct net *net) -{ - struct wireless_dev *wdev; - int err = 0; - - if (!(rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK)) - return -EOPNOTSUPP; - - list_for_each_entry(wdev, &rdev->netdev_list, list) { - wdev->netdev->features &= ~NETIF_F_NETNS_LOCAL; - err = dev_change_net_namespace(wdev->netdev, net, "wlan%d"); - if (err) - break; - wdev->netdev->features |= NETIF_F_NETNS_LOCAL; - } - - if (err) { - /* failed -- clean up to old netns */ - net = wiphy_net(&rdev->wiphy); - - list_for_each_entry_continue_reverse(wdev, &rdev->netdev_list, - list) { - wdev->netdev->features &= ~NETIF_F_NETNS_LOCAL; - err = dev_change_net_namespace(wdev->netdev, net, - "wlan%d"); - WARN_ON(err); - wdev->netdev->features |= NETIF_F_NETNS_LOCAL; - } - - return err; - } - - wiphy_net_set(&rdev->wiphy, net); - - err = device_rename(&rdev->wiphy.dev, dev_name(&rdev->wiphy.dev)); - WARN_ON(err); - - return 0; -} -#endif - -static void cfg80211_rfkill_poll(struct rfkill *rfkill, void *data) -{ - struct cfg80211_registered_device *rdev = data; - - rdev->ops->rfkill_poll(&rdev->wiphy); -} - -static int cfg80211_rfkill_set_block(void *data, bool blocked) -{ - struct cfg80211_registered_device *rdev = data; - struct wireless_dev *wdev; - - if (!blocked) - return 0; - - rtnl_lock(); - mutex_lock(&rdev->devlist_mtx); - - list_for_each_entry(wdev, &rdev->netdev_list, list) - dev_close(wdev->netdev); - - mutex_unlock(&rdev->devlist_mtx); - rtnl_unlock(); - - return 0; -} - -static void cfg80211_rfkill_sync_work(struct work_struct *work) -{ - struct cfg80211_registered_device *rdev; - - rdev = container_of(work, struct cfg80211_registered_device, rfkill_sync); - cfg80211_rfkill_set_block(rdev, rfkill_blocked(rdev->rfkill)); -} - -static void cfg80211_event_work(struct work_struct *work) -{ - struct cfg80211_registered_device *rdev; - - rdev = container_of(work, struct cfg80211_registered_device, - event_work); - - rtnl_lock(); - cfg80211_lock_rdev(rdev); - - cfg80211_process_rdev_events(rdev); - cfg80211_unlock_rdev(rdev); - rtnl_unlock(); -} - -/* exported functions */ - -struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv) -{ - static int wiphy_counter; - - struct cfg80211_registered_device *rdev; - int alloc_size; - - /* - * Make sure the padding is >= the rest of the struct so that we - * always keep it large enough to pad out the entire original - * kernel's struct. We really only need to make sure it's larger - * than the kernel compat is compiled against, but since it'll - * only increase in size make sure it's larger than the current - * version of it. Subtract since it's included. - */ - BUILD_BUG_ON(WIPHY_COMPAT_PAD_SIZE < - sizeof(struct wiphy) - WIPHY_COMPAT_PAD_SIZE); - - WARN_ON(ops->add_key && (!ops->del_key || !ops->set_default_key)); - WARN_ON(ops->auth && (!ops->assoc || !ops->deauth || !ops->disassoc)); - WARN_ON(ops->connect && !ops->disconnect); - WARN_ON(ops->join_ibss && !ops->leave_ibss); - WARN_ON(ops->add_virtual_intf && !ops->del_virtual_intf); - WARN_ON(ops->add_station && !ops->del_station); - WARN_ON(ops->add_mpath && !ops->del_mpath); - WARN_ON(ops->join_mesh && !ops->leave_mesh); - - alloc_size = sizeof(*rdev) + sizeof_priv; - - rdev = kzalloc(alloc_size, GFP_KERNEL); - if (!rdev) - return NULL; - - rdev->ops = ops; - - mutex_lock(&cfg80211_mutex); - - rdev->wiphy_idx = wiphy_counter++; - - if (unlikely(!wiphy_idx_valid(rdev->wiphy_idx))) { - wiphy_counter--; - mutex_unlock(&cfg80211_mutex); - /* ugh, wrapped! */ - kfree(rdev); - return NULL; - } - - mutex_unlock(&cfg80211_mutex); - - /* give it a proper name */ - dev_set_name(&rdev->wiphy.dev, PHY_NAME "%d", rdev->wiphy_idx); - - mutex_init(&rdev->mtx); - mutex_init(&rdev->devlist_mtx); - mutex_init(&rdev->sched_scan_mtx); - INIT_LIST_HEAD(&rdev->netdev_list); - spin_lock_init(&rdev->bss_lock); - INIT_LIST_HEAD(&rdev->bss_list); - INIT_WORK(&rdev->scan_done_wk, __cfg80211_scan_done); - INIT_WORK(&rdev->sched_scan_results_wk, __cfg80211_sched_scan_results); - device_initialize(&rdev->wiphy.dev); - rdev->wiphy.dev.class = &ieee80211_class; - rdev->wiphy.dev.platform_data = rdev; - -#ifdef CONFIG_CFG80211_DEFAULT_PS - rdev->wiphy.flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT; -#endif - -#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24)) - wiphy_net_set(&rdev->wiphy, &init_net); -#endif - - rdev->rfkill_ops.set_block = cfg80211_rfkill_set_block; - rdev->rfkill = rfkill_alloc(dev_name(&rdev->wiphy.dev), - &rdev->wiphy.dev, RFKILL_TYPE_WLAN, - &rdev->rfkill_ops, rdev); - - if (!rdev->rfkill) { - kfree(rdev); - return NULL; - } - - INIT_WORK(&rdev->rfkill_sync, cfg80211_rfkill_sync_work); - INIT_WORK(&rdev->conn_work, cfg80211_conn_work); - INIT_WORK(&rdev->event_work, cfg80211_event_work); - - init_waitqueue_head(&rdev->dev_wait); - - /* - * Initialize wiphy parameters to IEEE 802.11 MIB default values. - * Fragmentation and RTS threshold are disabled by default with the - * special -1 value. - */ - rdev->wiphy.retry_short = 7; - rdev->wiphy.retry_long = 4; - rdev->wiphy.frag_threshold = (u32) -1; - rdev->wiphy.rts_threshold = (u32) -1; - rdev->wiphy.coverage_class = 0; - - return &rdev->wiphy; -} -EXPORT_SYMBOL(wiphy_new); - -static int wiphy_verify_combinations(struct wiphy *wiphy) -{ - const struct ieee80211_iface_combination *c; - int i, j; - - /* If we have combinations enforce them */ - if (wiphy->n_iface_combinations) - wiphy->flags |= WIPHY_FLAG_ENFORCE_COMBINATIONS; - - for (i = 0; i < wiphy->n_iface_combinations; i++) { - u32 cnt = 0; - u16 all_iftypes = 0; - - c = &wiphy->iface_combinations[i]; - - /* Combinations with just one interface aren't real */ - if (WARN_ON(c->max_interfaces < 2)) - return -EINVAL; - - /* Need at least one channel */ - if (WARN_ON(!c->num_different_channels)) - return -EINVAL; - - if (WARN_ON(!c->n_limits)) - return -EINVAL; - - for (j = 0; j < c->n_limits; j++) { - u16 types = c->limits[j].types; - - /* - * interface types shouldn't overlap, this is - * used in cfg80211_can_change_interface() - */ - if (WARN_ON(types & all_iftypes)) - return -EINVAL; - all_iftypes |= types; - - if (WARN_ON(!c->limits[j].max)) - return -EINVAL; - - /* Shouldn't list software iftypes in combinations! */ - if (WARN_ON(wiphy->software_iftypes & types)) - return -EINVAL; - - cnt += c->limits[j].max; - /* - * Don't advertise an unsupported type - * in a combination. - */ - if (WARN_ON((wiphy->interface_modes & types) != types)) - return -EINVAL; - } - - /* You can't even choose that many! */ - if (WARN_ON(cnt < c->max_interfaces)) - return -EINVAL; - } - - return 0; -} - -int wiphy_register(struct wiphy *wiphy) -{ - struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); - int res; - enum ieee80211_band band; - struct ieee80211_supported_band *sband; - bool have_band = false; - int i; - u16 ifmodes = wiphy->interface_modes; - - if (WARN_ON((wiphy->wowlan.flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) && - !(wiphy->wowlan.flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY))) - return -EINVAL; - - if (WARN_ON(wiphy->ap_sme_capa && - !(wiphy->flags & WIPHY_FLAG_HAVE_AP_SME))) - return -EINVAL; - - if (WARN_ON(wiphy->addresses && !wiphy->n_addresses)) - return -EINVAL; - - if (WARN_ON(wiphy->addresses && - !is_zero_ether_addr(wiphy->perm_addr) && - memcmp(wiphy->perm_addr, wiphy->addresses[0].addr, - ETH_ALEN))) - return -EINVAL; - - if (wiphy->addresses) - memcpy(wiphy->perm_addr, wiphy->addresses[0].addr, ETH_ALEN); - - /* sanity check ifmodes */ - WARN_ON(!ifmodes); - ifmodes &= ((1 << NUM_NL80211_IFTYPES) - 1) & ~1; - if (WARN_ON(ifmodes != wiphy->interface_modes)) - wiphy->interface_modes = ifmodes; - - res = wiphy_verify_combinations(wiphy); - if (res) - return res; - - /* sanity check supported bands/channels */ - for (band = 0; band < IEEE80211_NUM_BANDS; band++) { - sband = wiphy->bands[band]; - if (!sband) - continue; - - sband->band = band; - - if (WARN_ON(!sband->n_channels || !sband->n_bitrates)) - return -EINVAL; - - /* - * Since cfg80211_disable_40mhz_24ghz is global, we can - * modify the sband's ht data even if the driver uses a - * global structure for that. - */ - if (cfg80211_disable_40mhz_24ghz && - band == IEEE80211_BAND_2GHZ && - sband->ht_cap.ht_supported) { - sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40; - sband->ht_cap.cap &= ~IEEE80211_HT_CAP_SGI_40; - } - - /* - * Since we use a u32 for rate bitmaps in - * ieee80211_get_response_rate, we cannot - * have more than 32 legacy rates. - */ - if (WARN_ON(sband->n_bitrates > 32)) - return -EINVAL; - - for (i = 0; i < sband->n_channels; i++) { - sband->channels[i].orig_flags = - sband->channels[i].flags; - sband->channels[i].orig_mag = - sband->channels[i].max_antenna_gain; - sband->channels[i].orig_mpwr = - sband->channels[i].max_power; - sband->channels[i].band = band; - } - - have_band = true; - } - - if (!have_band) { - WARN_ON(1); - return -EINVAL; - } - - if (rdev->wiphy.wowlan.n_patterns) { - if (WARN_ON(!rdev->wiphy.wowlan.pattern_min_len || - rdev->wiphy.wowlan.pattern_min_len > - rdev->wiphy.wowlan.pattern_max_len)) - return -EINVAL; - } - - /* check and set up bitrates */ - ieee80211_set_bitrate_flags(wiphy); - - mutex_lock(&cfg80211_mutex); - - res = device_add(&rdev->wiphy.dev); - if (res) { - mutex_unlock(&cfg80211_mutex); - return res; - } - - /* set up regulatory info */ - regulatory_update(wiphy, NL80211_REGDOM_SET_BY_CORE); - - list_add_rcu(&rdev->list, &cfg80211_rdev_list); - cfg80211_rdev_list_generation++; - - /* add to debugfs */ - rdev->wiphy.debugfsdir = - debugfs_create_dir(wiphy_name(&rdev->wiphy), - ieee80211_debugfs_dir); - if (IS_ERR(rdev->wiphy.debugfsdir)) - rdev->wiphy.debugfsdir = NULL; - - if (wiphy->flags & WIPHY_FLAG_CUSTOM_REGULATORY) { - struct regulatory_request request; - - request.wiphy_idx = get_wiphy_idx(wiphy); - request.initiator = NL80211_REGDOM_SET_BY_DRIVER; - request.alpha2[0] = '9'; - request.alpha2[1] = '9'; - - nl80211_send_reg_change_event(&request); - } - - cfg80211_debugfs_rdev_add(rdev); - mutex_unlock(&cfg80211_mutex); - - /* - * due to a locking dependency this has to be outside of the - * cfg80211_mutex lock - */ - res = rfkill_register(rdev->rfkill); - if (res) - goto out_rm_dev; - - rtnl_lock(); - rdev->wiphy.registered = true; - rtnl_unlock(); - return 0; - -out_rm_dev: - device_del(&rdev->wiphy.dev); - return res; -} -EXPORT_SYMBOL(wiphy_register); - -void wiphy_rfkill_start_polling(struct wiphy *wiphy) -{ - struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); - - if (!rdev->ops->rfkill_poll) - return; - rdev->rfkill_ops.poll = cfg80211_rfkill_poll; - rfkill_resume_polling(rdev->rfkill); -} -EXPORT_SYMBOL(wiphy_rfkill_start_polling); - -void wiphy_rfkill_stop_polling(struct wiphy *wiphy) -{ - struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); - - rfkill_pause_polling(rdev->rfkill); -} -EXPORT_SYMBOL(wiphy_rfkill_stop_polling); - -void wiphy_unregister(struct wiphy *wiphy) -{ - struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); - - rtnl_lock(); - rdev->wiphy.registered = false; - rtnl_unlock(); - - rfkill_unregister(rdev->rfkill); - - /* protect the device list */ - mutex_lock(&cfg80211_mutex); - - wait_event(rdev->dev_wait, ({ - int __count; - mutex_lock(&rdev->devlist_mtx); - __count = rdev->opencount; - mutex_unlock(&rdev->devlist_mtx); - __count == 0;})); - - mutex_lock(&rdev->devlist_mtx); - BUG_ON(!list_empty(&rdev->netdev_list)); - mutex_unlock(&rdev->devlist_mtx); - - /* - * First remove the hardware from everywhere, this makes - * it impossible to find from userspace. - */ - debugfs_remove_recursive(rdev->wiphy.debugfsdir); - list_del_rcu(&rdev->list); - synchronize_rcu(); - - /* - * Try to grab rdev->mtx. If a command is still in progress, - * hopefully the driver will refuse it since it's tearing - * down the device already. We wait for this command to complete - * before unlinking the item from the list. - * Note: as codified by the BUG_ON above we cannot get here if - * a virtual interface is still present. Hence, we can only get - * to lock contention here if userspace issues a command that - * identified the hardware by wiphy index. - */ - cfg80211_lock_rdev(rdev); - /* nothing */ - cfg80211_unlock_rdev(rdev); - - /* If this device got a regulatory hint tell core its - * free to listen now to a new shiny device regulatory hint */ - reg_device_remove(wiphy); - - cfg80211_rdev_list_generation++; - device_del(&rdev->wiphy.dev); - - mutex_unlock(&cfg80211_mutex); - - flush_work(&rdev->scan_done_wk); - cancel_work_sync(&rdev->conn_work); - flush_work(&rdev->event_work); -} -EXPORT_SYMBOL(wiphy_unregister); - -void cfg80211_dev_free(struct cfg80211_registered_device *rdev) -{ - struct cfg80211_internal_bss *scan, *tmp; - rfkill_destroy(rdev->rfkill); - mutex_destroy(&rdev->mtx); - mutex_destroy(&rdev->devlist_mtx); - mutex_destroy(&rdev->sched_scan_mtx); - list_for_each_entry_safe(scan, tmp, &rdev->bss_list, list) - cfg80211_put_bss(&scan->pub); - cfg80211_rdev_free_wowlan(rdev); - kfree(rdev); -} - -void wiphy_free(struct wiphy *wiphy) -{ - put_device(&wiphy->dev); -} -EXPORT_SYMBOL(wiphy_free); - -void wiphy_rfkill_set_hw_state(struct wiphy *wiphy, bool blocked) -{ - struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy); - - if (rfkill_set_hw_state(rdev->rfkill, blocked)) - schedule_work(&rdev->rfkill_sync); -} -EXPORT_SYMBOL(wiphy_rfkill_set_hw_state); - -static void wdev_cleanup_work(struct work_struct *work) -{ - struct wireless_dev *wdev; - struct cfg80211_registered_device *rdev; - - wdev = container_of(work, struct wireless_dev, cleanup_work); - rdev = wiphy_to_dev(wdev->wiphy); - - cfg80211_lock_rdev(rdev); - - if (WARN_ON(rdev->scan_req && rdev->scan_req->dev == wdev->netdev)) { - rdev->scan_req->aborted = true; - ___cfg80211_scan_done(rdev, true); - } - - cfg80211_unlock_rdev(rdev); - - mutex_lock(&rdev->sched_scan_mtx); - - if (WARN_ON(rdev->sched_scan_req && - rdev->sched_scan_req->dev == wdev->netdev)) { - __cfg80211_stop_sched_scan(rdev, false); - } - - mutex_unlock(&rdev->sched_scan_mtx); - - mutex_lock(&rdev->devlist_mtx); - rdev->opencount--; - mutex_unlock(&rdev->devlist_mtx); - wake_up(&rdev->dev_wait); - - dev_put(wdev->netdev); -} - -#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,32)) -static struct device_type wiphy_type = { - .name = "wlan", -}; -#endif - -static int cfg80211_netdev_notifier_call(struct notifier_block * nb, - unsigned long state, - void *ndev) -{ - struct net_device *dev = ndev; - struct wireless_dev *wdev = dev->ieee80211_ptr; - struct cfg80211_registered_device *rdev; - int ret; - - if (!wdev) - return NOTIFY_DONE; - - rdev = wiphy_to_dev(wdev->wiphy); - - WARN_ON(wdev->iftype == NL80211_IFTYPE_UNSPECIFIED); - - switch (state) { - case NETDEV_POST_INIT: - SET_NETDEV_DEVTYPE(dev, &wiphy_type); - break; - case NETDEV_REGISTER: - /* - * NB: cannot take rdev->mtx here because this may be - * called within code protected by it when interfaces - * are added with nl80211. - */ - mutex_init(&wdev->mtx); - INIT_WORK(&wdev->cleanup_work, wdev_cleanup_work); - INIT_LIST_HEAD(&wdev->event_list); - spin_lock_init(&wdev->event_lock); - INIT_LIST_HEAD(&wdev->mgmt_registrations); - spin_lock_init(&wdev->mgmt_registrations_lock); - - mutex_lock(&rdev->devlist_mtx); - list_add_rcu(&wdev->list, &rdev->netdev_list); - rdev->devlist_generation++; -#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24)) - /* can only change netns with wiphy */ - dev->features |= NETIF_F_NETNS_LOCAL; -#endif - - if (sysfs_create_link(&dev->dev.kobj, &rdev->wiphy.dev.kobj, - "phy80211")) { - pr_err("failed to add phy80211 symlink to netdev!\n"); - } - wdev->netdev = dev; - wdev->sme_state = CFG80211_SME_IDLE; - mutex_unlock(&rdev->devlist_mtx); -#ifdef CONFIG_CFG80211_WEXT -#ifdef CONFIG_WIRELESS_EXT - if (!dev->wireless_handlers) - dev->wireless_handlers = &cfg80211_wext_handler; -#else -#ifdef CONFIG_MACH_PX - dev->ieee80211_ptr->wiphy->wext = &cfg80211_wext_handler; - printk_once(KERN_WARNING "cfg80211: wext will work even though " - "kernel was compiled with CONFIG_WIRELESS_EXT=n.\n"); -#else - printk_once(KERN_WARNING "cfg80211: wext will not work because " - "kernel was compiled with CONFIG_WIRELESS_EXT=n. " - "Tools using wext interface, like iwconfig will " - "not work.\n"); -#endif -#endif - wdev->wext.default_key = -1; - wdev->wext.default_mgmt_key = -1; - wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; -#endif - - if (wdev->wiphy->flags & WIPHY_FLAG_PS_ON_BY_DEFAULT) - wdev->ps = true; - else - wdev->ps = false; - /* allow mac80211 to determine the timeout */ - wdev->ps_timeout = -1; - - if (!dev->ethtool_ops) - dev->ethtool_ops = &cfg80211_ethtool_ops; - - if ((wdev->iftype == NL80211_IFTYPE_STATION || - wdev->iftype == NL80211_IFTYPE_P2P_CLIENT || - wdev->iftype == NL80211_IFTYPE_ADHOC) && !wdev->use_4addr) - dev->priv_flags |= IFF_DONT_BRIDGE; - break; - case NETDEV_GOING_DOWN: - switch (wdev->iftype) { - case NL80211_IFTYPE_ADHOC: - cfg80211_leave_ibss(rdev, dev, true); - break; - case NL80211_IFTYPE_P2P_CLIENT: - case NL80211_IFTYPE_STATION: - mutex_lock(&rdev->sched_scan_mtx); - __cfg80211_stop_sched_scan(rdev, false); - mutex_unlock(&rdev->sched_scan_mtx); - - wdev_lock(wdev); -#ifdef CONFIG_CFG80211_WEXT - kfree(wdev->wext.ie); - wdev->wext.ie = NULL; - wdev->wext.ie_len = 0; - wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; -#endif - __cfg80211_disconnect(rdev, dev, - WLAN_REASON_DEAUTH_LEAVING, true); - cfg80211_mlme_down(rdev, dev); - wdev_unlock(wdev); - break; - case NL80211_IFTYPE_MESH_POINT: - cfg80211_leave_mesh(rdev, dev); - break; - default: - break; - } - wdev->beacon_interval = 0; - break; - case NETDEV_DOWN: - dev_hold(dev); - queue_work(cfg80211_wq, &wdev->cleanup_work); - break; - case NETDEV_UP: - /* - * If we have a really quick DOWN/UP succession we may - * have this work still pending ... cancel it and see - * if it was pending, in which case we need to account - * for some of the work it would have done. - */ - if (cancel_work_sync(&wdev->cleanup_work)) { - mutex_lock(&rdev->devlist_mtx); - rdev->opencount--; - mutex_unlock(&rdev->devlist_mtx); - dev_put(dev); - } - cfg80211_lock_rdev(rdev); - mutex_lock(&rdev->devlist_mtx); - wdev_lock(wdev); - switch (wdev->iftype) { -#ifdef CONFIG_CFG80211_WEXT - case NL80211_IFTYPE_ADHOC: - cfg80211_ibss_wext_join(rdev, wdev); - break; - case NL80211_IFTYPE_STATION: - cfg80211_mgd_wext_connect(rdev, wdev); - break; -#endif -#ifdef CONFIG_MAC80211_MESH - case NL80211_IFTYPE_MESH_POINT: - { - /* backward compat code... */ - struct mesh_setup setup; - memcpy(&setup, &default_mesh_setup, - sizeof(setup)); - /* back compat only needed for mesh_id */ - setup.mesh_id = wdev->ssid; - setup.mesh_id_len = wdev->mesh_id_up_len; - if (wdev->mesh_id_up_len) - __cfg80211_join_mesh(rdev, dev, - &setup, - &default_mesh_config); - break; - } -#endif - default: - break; - } - wdev_unlock(wdev); - rdev->opencount++; - mutex_unlock(&rdev->devlist_mtx); - cfg80211_unlock_rdev(rdev); - - /* - * Configure power management to the driver here so that its - * correctly set also after interface type changes etc. - */ - if ((wdev->iftype == NL80211_IFTYPE_STATION || - wdev->iftype == NL80211_IFTYPE_P2P_CLIENT) && - rdev->ops->set_power_mgmt) - if (rdev->ops->set_power_mgmt(wdev->wiphy, dev, - wdev->ps, - wdev->ps_timeout)) { - /* assume this means it's off */ - wdev->ps = false; - } - break; - case NETDEV_UNREGISTER: - /* - * NB: cannot take rdev->mtx here because this may be - * called within code protected by it when interfaces - * are removed with nl80211. - */ - mutex_lock(&rdev->devlist_mtx); - /* - * It is possible to get NETDEV_UNREGISTER - * multiple times. To detect that, check - * that the interface is still on the list - * of registered interfaces, and only then - * remove and clean it up. - */ - if (!list_empty(&wdev->list)) { - sysfs_remove_link(&dev->dev.kobj, "phy80211"); - list_del_rcu(&wdev->list); - rdev->devlist_generation++; - cfg80211_mlme_purge_registrations(wdev); -#ifdef CONFIG_CFG80211_WEXT - kfree(wdev->wext.keys); -#endif - } - mutex_unlock(&rdev->devlist_mtx); - /* - * synchronise (so that we won't find this netdev - * from other code any more) and then clear the list - * head so that the above code can safely check for - * !list_empty() to avoid double-cleanup. - */ - synchronize_rcu(); - INIT_LIST_HEAD(&wdev->list); - break; - case NETDEV_PRE_UP: - if (!(wdev->wiphy->interface_modes & BIT(wdev->iftype))) - return notifier_from_errno(-EOPNOTSUPP); - if (rfkill_blocked(rdev->rfkill)) - return notifier_from_errno(-ERFKILL); - ret = cfg80211_can_add_interface(rdev, wdev->iftype); - if (ret) - return notifier_from_errno(ret); - break; - } - - return NOTIFY_DONE; -} - -static struct notifier_block cfg80211_netdev_notifier = { - .notifier_call = cfg80211_netdev_notifier_call, -}; - -#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24)) -static void __net_exit cfg80211_pernet_exit(struct net *net) -{ - struct cfg80211_registered_device *rdev; - - rtnl_lock(); - mutex_lock(&cfg80211_mutex); - list_for_each_entry(rdev, &cfg80211_rdev_list, list) { - if (net_eq(wiphy_net(&rdev->wiphy), net)) - WARN_ON(cfg80211_switch_netns(rdev, &init_net)); - } - mutex_unlock(&cfg80211_mutex); - rtnl_unlock(); -} - -static struct pernet_operations cfg80211_pernet_ops = { - .exit = cfg80211_pernet_exit, -}; -#endif - -static int __init cfg80211_init(void) -{ - int err; - -#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24)) - err = register_pernet_device(&cfg80211_pernet_ops); - if (err) - goto out_fail_pernet; -#endif - - err = wiphy_sysfs_init(); - if (err) - goto out_fail_sysfs; - - err = register_netdevice_notifier(&cfg80211_netdev_notifier); - if (err) - goto out_fail_notifier; - - err = nl80211_init(); - if (err) - goto out_fail_nl80211; - - ieee80211_debugfs_dir = debugfs_create_dir("ieee80211", NULL); - - err = regulatory_init(); - if (err) - goto out_fail_reg; - - cfg80211_wq = create_singlethread_workqueue("cfg80211"); - if (!cfg80211_wq) - goto out_fail_wq; - - return 0; - -out_fail_wq: - regulatory_exit(); -out_fail_reg: - debugfs_remove(ieee80211_debugfs_dir); -out_fail_nl80211: - unregister_netdevice_notifier(&cfg80211_netdev_notifier); -out_fail_notifier: - wiphy_sysfs_exit(); -out_fail_sysfs: -#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24)) - unregister_pernet_device(&cfg80211_pernet_ops); -out_fail_pernet: -#endif - return err; -} -subsys_initcall(cfg80211_init); - -static void __exit cfg80211_exit(void) -{ - debugfs_remove(ieee80211_debugfs_dir); - nl80211_exit(); - unregister_netdevice_notifier(&cfg80211_netdev_notifier); - wiphy_sysfs_exit(); - regulatory_exit(); -#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,24)) - unregister_pernet_device(&cfg80211_pernet_ops); -#endif - destroy_workqueue(cfg80211_wq); -} -module_exit(cfg80211_exit); |