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| author |   Sven Eckelmann <sven@narfation.org> | 2016-06-13 07:41:31 +0200 |
|---|---|---|
| committer |   Simon Wunderlich <sw@simonwunderlich.de> | 2016-08-09 07:54:27 +0200 |
| commit | 569c98504b2004dba207127bcceb8f3aeb9b8e7d (patch) | |
| tree | 8d51cda7b5e931668dbe15e9d45305da5c564bdd /net/batman-adv/soft-interface.c | |
| parent | batman-adv: Modify mesh_iface outside sysfs context (diff) | |
| download | linux-dev-569c98504b2004dba207127bcceb8f3aeb9b8e7d.tar.xz linux-dev-569c98504b2004dba207127bcceb8f3aeb9b8e7d.zip | |
batman-adv: Revert "postpone sysfs removal when unregistering"
Postponing the removal of the interface breaks the expected behavior of
NETDEV_UNREGISTER and NETDEV_PRE_TYPE_CHANGE. This is especially
problematic when an interface is removed and added in quick succession.
This reverts commit 5bc44dc8458c ("batman-adv: postpone sysfs removal when
unregistering").
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Diffstat (limited to 'net/batman-adv/soft-interface.c')
| -rw-r--r-- | net/batman-adv/soft-interface.c | 44 |
1 files changed, 13 insertions, 31 deletions
diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c index 7527c0652dd5..216ac03ab432 100644 --- a/net/batman-adv/soft-interface.c +++ b/net/batman-adv/soft-interface.c @@ -39,6 +39,7 @@ #include <linux/random.h> #include <linux/rculist.h> #include <linux/rcupdate.h> +#include <linux/rtnetlink.h> #include <linux/skbuff.h> #include <linux/slab.h> #include <linux/socket.h> @@ -46,7 +47,6 @@ #include <linux/stddef.h> #include <linux/string.h> #include <linux/types.h> -#include <linux/workqueue.h> #include "bat_algo.h" #include "bridge_loop_avoidance.h" @@ -747,34 +747,6 @@ static void batadv_set_lockdep_class(struct net_device *dev) } /** - * batadv_softif_destroy_finish - cleans up the remains of a softif - * @work: work queue item - * - * Free the parts of the soft interface which can not be removed under - * rtnl lock (to prevent deadlock situations). - */ -static void batadv_softif_destroy_finish(struct work_struct *work) -{ - struct batadv_softif_vlan *vlan; - struct batadv_priv *bat_priv; - struct net_device *soft_iface; - - bat_priv = container_of(work, struct batadv_priv, - cleanup_work); - soft_iface = bat_priv->soft_iface; - - /* destroy the "untagged" VLAN */ - vlan = batadv_softif_vlan_get(bat_priv, BATADV_NO_FLAGS); - if (vlan) { - batadv_softif_destroy_vlan(bat_priv, vlan); - batadv_softif_vlan_put(vlan); - } - - batadv_sysfs_del_meshif(soft_iface); - unregister_netdev(soft_iface); -} - -/** * batadv_softif_init_late - late stage initialization of soft interface * @dev: registered network device to modify * @@ -791,7 +763,6 @@ static int batadv_softif_init_late(struct net_device *dev) bat_priv = netdev_priv(dev); bat_priv->soft_iface = dev; - INIT_WORK(&bat_priv->cleanup_work, batadv_softif_destroy_finish); /* batadv_interface_stats() needs to be available as soon as * register_netdevice() has been called @@ -1028,8 +999,19 @@ struct net_device *batadv_softif_create(struct net *net, const char *name) void batadv_softif_destroy_sysfs(struct net_device *soft_iface) { struct batadv_priv *bat_priv = netdev_priv(soft_iface); + struct batadv_softif_vlan *vlan; + + ASSERT_RTNL(); + + /* destroy the "untagged" VLAN */ + vlan = batadv_softif_vlan_get(bat_priv, BATADV_NO_FLAGS); + if (vlan) { + batadv_softif_destroy_vlan(bat_priv, vlan); + batadv_softif_vlan_put(vlan); + } - queue_work(batadv_event_workqueue, &bat_priv->cleanup_work); + batadv_sysfs_del_meshif(soft_iface); + unregister_netdevice(soft_iface); } /** |