diff options
Diffstat (limited to 'net/wireless/core.c')
| -rw-r--r-- | net/wireless/core.c | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/net/wireless/core.c b/net/wireless/core.c index 1e189306560d..bc99e4ec7463 100644 --- a/net/wireless/core.c +++ b/net/wireless/core.c @@ -32,6 +32,7 @@ MODULE_DESCRIPTION("wireless configuration support"); * only read the list, and that can happen quite * often because we need to do it for each command */ LIST_HEAD(cfg80211_rdev_list); +int cfg80211_rdev_list_generation; /* * This is used to protect the cfg80211_rdev_list @@ -411,6 +412,8 @@ struct wiphy *wiphy_new(const struct cfg80211_ops *ops, int sizeof_priv) rdev->wiphy.dev.class = &ieee80211_class; rdev->wiphy.dev.platform_data = rdev; + rdev->wiphy.ps_default = CONFIG_CFG80211_DEFAULT_PS_VALUE; + wiphy_net_set(&rdev->wiphy, &init_net); rdev->rfkill_ops.set_block = cfg80211_rfkill_set_block; @@ -511,6 +514,7 @@ int wiphy_register(struct wiphy *wiphy) wiphy_update_regulatory(wiphy, NL80211_REGDOM_SET_BY_CORE); list_add(&rdev->list, &cfg80211_rdev_list); + cfg80211_rdev_list_generation++; mutex_unlock(&cfg80211_mutex); @@ -593,13 +597,14 @@ void wiphy_unregister(struct wiphy *wiphy) reg_device_remove(wiphy); list_del(&rdev->list); + cfg80211_rdev_list_generation++; device_del(&rdev->wiphy.dev); debugfs_remove(rdev->wiphy.debugfsdir); mutex_unlock(&cfg80211_mutex); + flush_work(&rdev->scan_done_wk); cancel_work_sync(&rdev->conn_work); - cancel_work_sync(&rdev->scan_done_wk); kfree(rdev->scan_req); flush_work(&rdev->event_work); } @@ -653,6 +658,7 @@ static int cfg80211_netdev_notifier_call(struct notifier_block * nb, spin_lock_init(&wdev->event_lock); mutex_lock(&rdev->devlist_mtx); list_add(&wdev->list, &rdev->netdev_list); + rdev->devlist_generation++; /* can only change netns with wiphy */ dev->features |= NETIF_F_NETNS_LOCAL; @@ -670,7 +676,7 @@ static int cfg80211_netdev_notifier_call(struct notifier_block * nb, wdev->wext.default_key = -1; wdev->wext.default_mgmt_key = -1; wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; - wdev->wext.ps = CONFIG_CFG80211_DEFAULT_PS_VALUE; + wdev->wext.ps = wdev->wiphy->ps_default; wdev->wext.ps_timeout = 100; if (rdev->ops->set_power_mgmt) if (rdev->ops->set_power_mgmt(wdev->wiphy, dev, @@ -706,6 +712,7 @@ static int cfg80211_netdev_notifier_call(struct notifier_block * nb, case NETDEV_UP: #ifdef CONFIG_WIRELESS_EXT cfg80211_lock_rdev(rdev); + mutex_lock(&rdev->devlist_mtx); wdev_lock(wdev); switch (wdev->iftype) { case NL80211_IFTYPE_ADHOC: @@ -718,10 +725,18 @@ static int cfg80211_netdev_notifier_call(struct notifier_block * nb, break; } wdev_unlock(wdev); + mutex_unlock(&rdev->devlist_mtx); cfg80211_unlock_rdev(rdev); #endif break; case NETDEV_UNREGISTER: + cfg80211_lock_rdev(rdev); + + if (WARN_ON(rdev->scan_req && rdev->scan_req->dev == dev)) { + rdev->scan_req->aborted = true; + ___cfg80211_scan_done(rdev); + } + mutex_lock(&rdev->devlist_mtx); /* * It is possible to get NETDEV_UNREGISTER @@ -733,12 +748,14 @@ static int cfg80211_netdev_notifier_call(struct notifier_block * nb, if (!list_empty(&wdev->list)) { sysfs_remove_link(&dev->dev.kobj, "phy80211"); list_del_init(&wdev->list); + rdev->devlist_generation++; mutex_destroy(&wdev->mtx); #ifdef CONFIG_WIRELESS_EXT kfree(wdev->wext.keys); #endif } mutex_unlock(&rdev->devlist_mtx); + cfg80211_unlock_rdev(rdev); break; case NETDEV_PRE_UP: if (!(wdev->wiphy->interface_modes & BIT(wdev->iftype))) |