/*
* This is the linux wireless configuration interface.
*
- * Copyright 2006-2008 Johannes Berg <johannes@sipsolutions.net>
+ * Copyright 2006-2009 Johannes Berg <johannes@sipsolutions.net>
*/
#include <linux/if.h>
#include <linux/module.h>
#include <linux/err.h>
-#include <linux/mutex.h>
#include <linux/list.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 <net/wireless.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"
/* RCU might be appropriate here since we usually
* only read the list, and that can happen quite
* often because we need to do it for each command */
-LIST_HEAD(cfg80211_drv_list);
-DEFINE_MUTEX(cfg80211_drv_mutex);
+LIST_HEAD(cfg80211_rdev_list);
+int cfg80211_rdev_list_generation;
+
+/*
+ * This is used to protect the cfg80211_rdev_list
+ */
+DEFINE_MUTEX(cfg80211_mutex);
/* for debugfs */
static struct dentry *ieee80211_debugfs_dir;
-/* requires cfg80211_drv_mutex to be held! */
-static struct cfg80211_registered_device *cfg80211_drv_by_wiphy(int wiphy)
+/* for the cleanup, scan and event works */
+struct workqueue_struct *cfg80211_wq;
+
+/* requires cfg80211_mutex to be held! */
+struct cfg80211_registered_device *cfg80211_rdev_by_wiphy_idx(int wiphy_idx)
{
- struct cfg80211_registered_device *result = NULL, *drv;
+ struct cfg80211_registered_device *result = NULL, *rdev;
+
+ if (!wiphy_idx_valid(wiphy_idx))
+ return NULL;
- list_for_each_entry(drv, &cfg80211_drv_list, list) {
- if (drv->idx == wiphy) {
- result = drv;
+ assert_cfg80211_lock();
+
+ list_for_each_entry(rdev, &cfg80211_rdev_list, list) {
+ if (rdev->wiphy_idx == wiphy_idx) {
+ result = rdev;
break;
}
}
return result;
}
-/* requires cfg80211_drv_mutex to be held! */
-static struct cfg80211_registered_device *
-__cfg80211_drv_from_info(struct genl_info *info)
+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 *bywiphy = NULL, *byifidx = NULL;
+ struct cfg80211_registered_device *bywiphyidx = NULL, *byifidx = NULL;
struct net_device *dev;
int err = -EINVAL;
+ assert_cfg80211_lock();
+
if (info->attrs[NL80211_ATTR_WIPHY]) {
- bywiphy = cfg80211_drv_by_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(&init_net, ifindex);
+ dev = dev_get_by_index(genl_info_net(info), ifindex);
if (dev) {
if (dev->ieee80211_ptr)
byifidx =
err = -ENODEV;
}
- if (bywiphy && byifidx) {
- if (bywiphy != byifidx)
+ if (bywiphyidx && byifidx) {
+ if (bywiphyidx != byifidx)
return ERR_PTR(-EINVAL);
else
- return bywiphy; /* == byifidx */
+ return bywiphyidx; /* == byifidx */
}
- if (bywiphy)
- return bywiphy;
+ if (bywiphyidx)
+ return bywiphyidx;
if (byifidx)
return byifidx;
struct cfg80211_registered_device *
cfg80211_get_dev_from_info(struct genl_info *info)
{
- struct cfg80211_registered_device *drv;
+ struct cfg80211_registered_device *rdev;
- mutex_lock(&cfg80211_drv_mutex);
- drv = __cfg80211_drv_from_info(info);
+ 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(drv))
- mutex_lock(&drv->mtx);
+ if (!IS_ERR(rdev))
+ mutex_lock(&rdev->mtx);
- mutex_unlock(&cfg80211_drv_mutex);
+ mutex_unlock(&cfg80211_mutex);
- return drv;
+ return rdev;
}
struct cfg80211_registered_device *
-cfg80211_get_dev_from_ifindex(int ifindex)
+cfg80211_get_dev_from_ifindex(struct net *net, int ifindex)
{
- struct cfg80211_registered_device *drv = ERR_PTR(-ENODEV);
+ struct cfg80211_registered_device *rdev = ERR_PTR(-ENODEV);
struct net_device *dev;
- mutex_lock(&cfg80211_drv_mutex);
- dev = dev_get_by_index(&init_net, ifindex);
+ mutex_lock(&cfg80211_mutex);
+ dev = dev_get_by_index(net, ifindex);
if (!dev)
goto out;
if (dev->ieee80211_ptr) {
- drv = wiphy_to_dev(dev->ieee80211_ptr->wiphy);
- mutex_lock(&drv->mtx);
+ rdev = wiphy_to_dev(dev->ieee80211_ptr->wiphy);
+ mutex_lock(&rdev->mtx);
} else
- drv = ERR_PTR(-ENODEV);
+ rdev = ERR_PTR(-ENODEV);
dev_put(dev);
out:
- mutex_unlock(&cfg80211_drv_mutex);
- return drv;
-}
-
-void cfg80211_put_dev(struct cfg80211_registered_device *drv)
-{
- BUG_ON(IS_ERR(drv));
- mutex_unlock(&drv->mtx);
+ 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 *drv;
- int idx, taken = -1, result, digits;
+ struct cfg80211_registered_device *rdev2;
+ int wiphy_idx, taken = -1, result, digits;
- mutex_lock(&cfg80211_drv_mutex);
+ assert_cfg80211_lock();
/* prohibit calling the thing phy%d when %d is not its number */
- sscanf(newname, PHY_NAME "%d%n", &idx, &taken);
- if (taken == strlen(newname) && idx != rdev->idx) {
- /* count number of places needed to print idx */
+ 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 (idx /= 10)
+ while (wiphy_idx /= 10)
digits++;
/*
* deny the name if it is phy<idx> where <idx> is printed
* without leading zeroes. taken == strlen(newname) here
*/
- result = -EINVAL;
if (taken == strlen(PHY_NAME) + digits)
- goto out_unlock;
+ return -EINVAL;
}
/* Ignore nop renames */
- result = 0;
if (strcmp(newname, dev_name(&rdev->wiphy.dev)) == 0)
- goto out_unlock;
+ return 0;
/* Ensure another device does not already have this name. */
- list_for_each_entry(drv, &cfg80211_drv_list, list) {
- result = -EINVAL;
- if (strcmp(newname, dev_name(&drv->wiphy.dev)) == 0)
- goto out_unlock;
- }
+ list_for_each_entry(rdev2, &cfg80211_rdev_list, list)
+ if (strcmp(newname, dev_name(&rdev2->wiphy.dev)) == 0)
+ return -EINVAL;
- /* this will only check for collisions in sysfs
- * which is not even always compiled in.
- */
result = device_rename(&rdev->wiphy.dev, newname);
if (result)
- goto out_unlock;
+ return result;
if (rdev->wiphy.debugfsdir &&
!debugfs_rename(rdev->wiphy.debugfsdir->d_parent,
printk(KERN_ERR "cfg80211: failed to rename debugfs dir to %s!\n",
newname);
- result = 0;
-out_unlock:
- mutex_unlock(&cfg80211_drv_mutex);
- if (result == 0)
- nl80211_notify_dev_rename(rdev);
+ nl80211_notify_dev_rename(rdev);
- return result;
+ return 0;
+}
+
+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;
+ }
+ }
+
+ wiphy_net_set(&rdev->wiphy, net);
+
+ return err;
+}
+
+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(struct cfg80211_ops *ops, int sizeof_priv)
+struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv)
{
static int wiphy_counter;
- struct cfg80211_registered_device *drv;
+ struct cfg80211_registered_device *rdev;
int alloc_size;
- WARN_ON(!ops->add_key && ops->del_key);
- WARN_ON(ops->add_key && !ops->del_key);
+ 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);
- alloc_size = sizeof(*drv) + sizeof_priv;
+ alloc_size = sizeof(*rdev) + sizeof_priv;
- drv = kzalloc(alloc_size, GFP_KERNEL);
- if (!drv)
+ rdev = kzalloc(alloc_size, GFP_KERNEL);
+ if (!rdev)
return NULL;
- drv->ops = ops;
+ rdev->ops = ops;
- mutex_lock(&cfg80211_drv_mutex);
+ mutex_lock(&cfg80211_mutex);
- drv->idx = wiphy_counter++;
+ rdev->wiphy_idx = wiphy_counter++;
- if (unlikely(drv->idx < 0)) {
+ if (unlikely(!wiphy_idx_valid(rdev->wiphy_idx))) {
wiphy_counter--;
- mutex_unlock(&cfg80211_drv_mutex);
+ mutex_unlock(&cfg80211_mutex);
/* ugh, wrapped! */
- kfree(drv);
+ kfree(rdev);
return NULL;
}
- mutex_unlock(&cfg80211_drv_mutex);
+ mutex_unlock(&cfg80211_mutex);
/* give it a proper name */
- dev_set_name(&drv->wiphy.dev, PHY_NAME "%d", drv->idx);
+ dev_set_name(&rdev->wiphy.dev, PHY_NAME "%d", rdev->wiphy_idx);
+
+ mutex_init(&rdev->mtx);
+ mutex_init(&rdev->devlist_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);
+
+#ifdef CONFIG_CFG80211_WEXT
+ rdev->wiphy.wext = &cfg80211_wext_handler;
+#endif
+
+ 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
- mutex_init(&drv->mtx);
- mutex_init(&drv->devlist_mtx);
- INIT_LIST_HEAD(&drv->netdev_list);
- spin_lock_init(&drv->bss_lock);
- INIT_LIST_HEAD(&drv->bss_list);
+ wiphy_net_set(&rdev->wiphy, &init_net);
- device_initialize(&drv->wiphy.dev);
- drv->wiphy.dev.class = &ieee80211_class;
- drv->wiphy.dev.platform_data = drv;
+ 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);
- return &drv->wiphy;
+ 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);
int wiphy_register(struct wiphy *wiphy)
{
- struct cfg80211_registered_device *drv = wiphy_to_dev(wiphy);
+ struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
int res;
enum ieee80211_band band;
struct ieee80211_supported_band *sband;
int i;
u16 ifmodes = wiphy->interface_modes;
- if (WARN_ON(wiphy->max_scan_ssids < 1))
- return -EINVAL;
-
/* sanity check ifmodes */
WARN_ON(!ifmodes);
ifmodes &= ((1 << __NL80211_IFTYPE_AFTER_LAST) - 1) & ~1;
/* check and set up bitrates */
ieee80211_set_bitrate_flags(wiphy);
- mutex_lock(&cfg80211_drv_mutex);
+ res = device_add(&rdev->wiphy.dev);
+ if (res)
+ return res;
+
+ res = rfkill_register(rdev->rfkill);
+ if (res)
+ goto out_rm_dev;
+
+ mutex_lock(&cfg80211_mutex);
/* set up regulatory info */
- wiphy_update_regulatory(wiphy, REGDOM_SET_BY_CORE);
+ wiphy_update_regulatory(wiphy, NL80211_REGDOM_SET_BY_CORE);
- res = device_add(&drv->wiphy.dev);
- if (res)
- goto out_unlock;
+ list_add(&rdev->list, &cfg80211_rdev_list);
+ cfg80211_rdev_list_generation++;
- list_add(&drv->list, &cfg80211_drv_list);
+ mutex_unlock(&cfg80211_mutex);
/* add to debugfs */
- drv->wiphy.debugfsdir =
- debugfs_create_dir(wiphy_name(&drv->wiphy),
+ rdev->wiphy.debugfsdir =
+ debugfs_create_dir(wiphy_name(&rdev->wiphy),
ieee80211_debugfs_dir);
- if (IS_ERR(drv->wiphy.debugfsdir))
- drv->wiphy.debugfsdir = NULL;
+ 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);
+
+ return 0;
- res = 0;
-out_unlock:
- mutex_unlock(&cfg80211_drv_mutex);
+ 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 *drv = wiphy_to_dev(wiphy);
+ struct cfg80211_registered_device *rdev = wiphy_to_dev(wiphy);
+
+ rfkill_unregister(rdev->rfkill);
/* protect the device list */
- mutex_lock(&cfg80211_drv_mutex);
+ 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);
- BUG_ON(!list_empty(&drv->netdev_list));
+ /*
+ * First remove the hardware from everywhere, this makes
+ * it impossible to find from userspace.
+ */
+ debugfs_remove_recursive(rdev->wiphy.debugfsdir);
+ list_del(&rdev->list);
/*
- * Try to grab drv->mtx. If a command is still in progress,
+ * 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 associated. Hence, we can only
- * get to lock contention here if userspace issues a command
- * that identified the hardware by wiphy index.
+ * 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.
*/
- mutex_lock(&drv->mtx);
- /* unlock again before freeing */
- mutex_unlock(&drv->mtx);
+ 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);
- list_del(&drv->list);
- device_del(&drv->wiphy.dev);
- debugfs_remove(drv->wiphy.debugfsdir);
+ cfg80211_rdev_list_generation++;
+ device_del(&rdev->wiphy.dev);
+
+ mutex_unlock(&cfg80211_mutex);
- mutex_unlock(&cfg80211_drv_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 *drv)
+void cfg80211_dev_free(struct cfg80211_registered_device *rdev)
{
struct cfg80211_internal_bss *scan, *tmp;
- mutex_destroy(&drv->mtx);
- mutex_destroy(&drv->devlist_mtx);
- list_for_each_entry_safe(scan, tmp, &drv->bss_list, list)
- kfree(scan);
- kfree(drv);
+ rfkill_destroy(rdev->rfkill);
+ mutex_destroy(&rdev->mtx);
+ mutex_destroy(&rdev->devlist_mtx);
+ list_for_each_entry_safe(scan, tmp, &rdev->bss_list, list)
+ cfg80211_put_bss(&scan->pub);
+ kfree(rdev);
}
void wiphy_free(struct wiphy *wiphy)
}
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->devlist_mtx);
+ rdev->opencount--;
+ mutex_unlock(&rdev->devlist_mtx);
+ wake_up(&rdev->dev_wait);
+
+ dev_put(wdev->netdev);
+}
+
+static struct device_type wiphy_type = {
+ .name = "wlan",
+};
+
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;
- if (!dev->ieee80211_ptr)
- return 0;
+ if (!wdev)
+ return NOTIFY_DONE;
- rdev = wiphy_to_dev(dev->ieee80211_ptr->wiphy);
+ rdev = wiphy_to_dev(wdev->wiphy);
- WARN_ON(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_UNSPECIFIED);
+ 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);
mutex_lock(&rdev->devlist_mtx);
- list_add(&dev->ieee80211_ptr->list, &rdev->netdev_list);
+ list_add(&wdev->list, &rdev->netdev_list);
+ rdev->devlist_generation++;
+ /* can only change netns with wiphy */
+ dev->features |= NETIF_F_NETNS_LOCAL;
+
if (sysfs_create_link(&dev->dev.kobj, &rdev->wiphy.dev.kobj,
"phy80211")) {
printk(KERN_ERR "wireless: failed to add phy80211 "
"symlink to netdev!\n");
}
- dev->ieee80211_ptr->netdev = dev;
+ wdev->netdev = dev;
+ wdev->sme_state = CFG80211_SME_IDLE;
mutex_unlock(&rdev->devlist_mtx);
+#ifdef CONFIG_CFG80211_WEXT
+ wdev->wext.default_key = -1;
+ wdev->wext.default_mgmt_key = -1;
+ wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
+ if (wdev->wiphy->flags & WIPHY_FLAG_PS_ON_BY_DEFAULT)
+ wdev->wext.ps = true;
+ else
+ wdev->wext.ps = false;
+ wdev->wext.ps_timeout = 100;
+ if (rdev->ops->set_power_mgmt)
+ if (rdev->ops->set_power_mgmt(wdev->wiphy, dev,
+ wdev->wext.ps,
+ wdev->wext.ps_timeout)) {
+ /* assume this means it's off */
+ wdev->wext.ps = false;
+ }
+#endif
+ if (!dev->ethtool_ops)
+ dev->ethtool_ops = &cfg80211_ethtool_ops;
+
+ if ((wdev->iftype == NL80211_IFTYPE_STATION ||
+ 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_STATION:
+ 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;
+ default:
+ break;
+ }
+ 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);
+#ifdef CONFIG_CFG80211_WEXT
+ wdev_lock(wdev);
+ switch (wdev->iftype) {
+ case NL80211_IFTYPE_ADHOC:
+ cfg80211_ibss_wext_join(rdev, wdev);
+ break;
+ case NL80211_IFTYPE_STATION:
+ cfg80211_mgd_wext_connect(rdev, wdev);
+ break;
+ default:
+ break;
+ }
+ wdev_unlock(wdev);
+#endif
+ rdev->opencount++;
+ mutex_unlock(&rdev->devlist_mtx);
+ cfg80211_unlock_rdev(rdev);
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);
- if (!list_empty(&dev->ieee80211_ptr->list)) {
+ /*
+ * 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_init(&dev->ieee80211_ptr->list);
+ list_del_init(&wdev->list);
+ rdev->devlist_generation++;
+#ifdef CONFIG_CFG80211_WEXT
+ kfree(wdev->wext.keys);
+#endif
}
mutex_unlock(&rdev->devlist_mtx);
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);
+ break;
}
- return 0;
+ return NOTIFY_DONE;
}
static struct notifier_block cfg80211_netdev_notifier = {
.notifier_call = cfg80211_netdev_notifier_call,
};
-static int cfg80211_init(void)
+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,
+};
+
+static int __init cfg80211_init(void)
{
int err;
+ err = register_pernet_device(&cfg80211_pernet_ops);
+ if (err)
+ goto out_fail_pernet;
+
err = wiphy_sysfs_init();
if (err)
goto out_fail_sysfs;
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:
out_fail_notifier:
wiphy_sysfs_exit();
out_fail_sysfs:
+ unregister_pernet_device(&cfg80211_pernet_ops);
+out_fail_pernet:
return err;
}
-
subsys_initcall(cfg80211_init);
static void cfg80211_exit(void)
unregister_netdevice_notifier(&cfg80211_netdev_notifier);
wiphy_sysfs_exit();
regulatory_exit();
+ unregister_pernet_device(&cfg80211_pernet_ops);
+ destroy_workqueue(cfg80211_wq);
}
module_exit(cfg80211_exit);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff