diff options
| -rw-r--r-- | net/wireless/core.c | 21 | ||||
| -rw-r--r-- | net/wireless/nl80211.c | 24 |
2 files changed, 36 insertions, 9 deletions
diff --git a/net/wireless/core.c b/net/wireless/core.c index a2785379df6e..589ee5a69a2e 100644 --- a/net/wireless/core.c +++ b/net/wireless/core.c @@ -332,14 +332,29 @@ static void cfg80211_event_work(struct work_struct *work) void cfg80211_destroy_ifaces(struct cfg80211_registered_device *rdev) { struct wireless_dev *wdev, *tmp; + bool found = false; ASSERT_RTNL(); - lockdep_assert_wiphy(&rdev->wiphy); + list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) { + if (wdev->nl_owner_dead) { + if (wdev->netdev) + dev_close(wdev->netdev); + found = true; + } + } + + if (!found) + return; + + wiphy_lock(&rdev->wiphy); list_for_each_entry_safe(wdev, tmp, &rdev->wiphy.wdev_list, list) { - if (wdev->nl_owner_dead) + if (wdev->nl_owner_dead) { + cfg80211_leave(rdev, wdev); rdev_del_virtual_intf(rdev, wdev); + } } + wiphy_unlock(&rdev->wiphy); } static void cfg80211_destroy_iface_wk(struct work_struct *work) @@ -350,9 +365,7 @@ static void cfg80211_destroy_iface_wk(struct work_struct *work) destroy_work); rtnl_lock(); - wiphy_lock(&rdev->wiphy); cfg80211_destroy_ifaces(rdev); - wiphy_unlock(&rdev->wiphy); rtnl_unlock(); } diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c index b1df42e4f1eb..a5224da63832 100644 --- a/net/wireless/nl80211.c +++ b/net/wireless/nl80211.c @@ -3929,7 +3929,7 @@ static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info) return err; } -static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info) +static int _nl80211_new_interface(struct sk_buff *skb, struct genl_info *info) { struct cfg80211_registered_device *rdev = info->user_ptr[0]; struct vif_params params; @@ -3938,9 +3938,6 @@ static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info) int err; enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED; - /* to avoid failing a new interface creation due to pending removal */ - cfg80211_destroy_ifaces(rdev); - memset(¶ms, 0, sizeof(params)); if (!info->attrs[NL80211_ATTR_IFNAME]) @@ -4028,6 +4025,21 @@ static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info) return genlmsg_reply(msg, info); } +static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info) +{ + struct cfg80211_registered_device *rdev = info->user_ptr[0]; + int ret; + + /* to avoid failing a new interface creation due to pending removal */ + cfg80211_destroy_ifaces(rdev); + + wiphy_lock(&rdev->wiphy); + ret = _nl80211_new_interface(skb, info); + wiphy_unlock(&rdev->wiphy); + + return ret; +} + static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info) { struct cfg80211_registered_device *rdev = info->user_ptr[0]; @@ -15040,7 +15052,9 @@ static const struct genl_small_ops nl80211_small_ops[] = { .doit = nl80211_new_interface, .flags = GENL_UNS_ADMIN_PERM, .internal_flags = NL80211_FLAG_NEED_WIPHY | - NL80211_FLAG_NEED_RTNL, + NL80211_FLAG_NEED_RTNL | + /* we take the wiphy mutex later ourselves */ + NL80211_FLAG_NO_WIPHY_MTX, }, { .cmd = NL80211_CMD_DEL_INTERFACE, |