The function batadv_hardif_remove_interfaces was meant to remove all interfaces which are currently in the list of known (compatible) hardifs during module unload. But the function unregister_netdevice_notifier is called in batadv_exit before batadv_hardif_remove_interfaces. This will trigger NETDEV_UNREGISTER events for all available interfaces and in this process remove all interfaces from batadv_hardif_list. And batadv_hardif_remove_interfaces only operated on this (empty) list.

Signed-off-by: Sven Eckelmann sven@narfation.org --- net/batman-adv/hard-interface.c | 17 ----------------- net/batman-adv/hard-interface.h | 1 - net/batman-adv/main.c | 1 - 3 files changed, 19 deletions(-)

diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c index fa06b51c..f95be90a 100644 --- a/net/batman-adv/hard-interface.c +++ b/net/batman-adv/hard-interface.c @@ -976,23 +976,6 @@ static void batadv_hardif_remove_interface(struct batadv_hard_iface *hard_iface) batadv_hardif_put(hard_iface); }

-/** - * batadv_hardif_remove_interfaces() - Remove all hard interfaces - */ -void batadv_hardif_remove_interfaces(void) -{ - struct batadv_hard_iface *hard_iface, *hard_iface_tmp; - - rtnl_lock(); - list_for_each_entry_safe(hard_iface, hard_iface_tmp, - &batadv_hardif_list, list) { - list_del_rcu(&hard_iface->list); - batadv_hardif_generation++; - batadv_hardif_remove_interface(hard_iface); - } - rtnl_unlock(); -} - /** * batadv_hard_if_event_softif() - Handle events for soft interfaces * @event: NETDEV_* event to handle diff --git a/net/batman-adv/hard-interface.h b/net/batman-adv/hard-interface.h index bad2e501..b1855d9d 100644 --- a/net/batman-adv/hard-interface.h +++ b/net/batman-adv/hard-interface.h @@ -100,7 +100,6 @@ int batadv_hardif_enable_interface(struct batadv_hard_iface *hard_iface, struct net *net, const char *iface_name); void batadv_hardif_disable_interface(struct batadv_hard_iface *hard_iface, enum batadv_hard_if_cleanup autodel); -void batadv_hardif_remove_interfaces(void); int batadv_hardif_min_mtu(struct net_device *soft_iface); void batadv_update_min_mtu(struct net_device *soft_iface); void batadv_hardif_release(struct kref *ref); diff --git a/net/batman-adv/main.c b/net/batman-adv/main.c index 519c08c2..70fee9b4 100644 --- a/net/batman-adv/main.c +++ b/net/batman-adv/main.c @@ -137,7 +137,6 @@ static void __exit batadv_exit(void) batadv_netlink_unregister(); rtnl_link_unregister(&batadv_link_ops); unregister_netdevice_notifier(&batadv_hard_if_notifier); - batadv_hardif_remove_interfaces();

flush_workqueue(batadv_event_workqueue); destroy_workqueue(batadv_event_workqueue);