Repository : ssh://git@open-mesh.org/batman-adv
On branch : next
commit 42bf18a5c838907965cf4be6d066c8f33a3d5949 Author: Sven Eckelmann sven@narfation.org Date: Tue Jan 5 12:06:26 2016 +0100
batman-adv: Drop reference to netdevice on last reference
The references to the network device should be dropped inside the release function for batadv_hard_iface similar to what is done with the batman-adv internal datastructures.
Fixes: b25cb3ddcccd ("batman-adv: use rcu callbacks when freeing batman_if") Signed-off-by: Sven Eckelmann sven@narfation.org Signed-off-by: Marek Lindner mareklindner@neomailbox.ch
42bf18a5c838907965cf4be6d066c8f33a3d5949 net/batman-adv/hard-interface.c | 13 ++++++++----- net/batman-adv/hard-interface.h | 6 +++--- 2 files changed, 11 insertions(+), 8 deletions(-)
diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c index 49e05d2..aea4d06 100644 --- a/net/batman-adv/hard-interface.c +++ b/net/batman-adv/hard-interface.c @@ -47,13 +47,16 @@ #include "sysfs.h" #include "translation-table.h"
-void batadv_hardif_free_rcu(struct rcu_head *rcu) +/** + * batadv_hardif_release - release hard interface from lists and queue for + * free after rcu grace period + * @hard_iface: the hard interface to free + */ +void batadv_hardif_release(struct batadv_hard_iface *hard_iface) { - struct batadv_hard_iface *hard_iface; - - hard_iface = container_of(rcu, struct batadv_hard_iface, rcu); dev_put(hard_iface->net_dev); - kfree(hard_iface); + + kfree_rcu(hard_iface, rcu); }
struct batadv_hard_iface * diff --git a/net/batman-adv/hard-interface.h b/net/batman-adv/hard-interface.h index 7b12ea8..4d74c04 100644 --- a/net/batman-adv/hard-interface.h +++ b/net/batman-adv/hard-interface.h @@ -61,18 +61,18 @@ void batadv_hardif_disable_interface(struct batadv_hard_iface *hard_iface, 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_free_rcu(struct rcu_head *rcu); +void batadv_hardif_release(struct batadv_hard_iface *hard_iface);
/** * batadv_hardif_free_ref - decrement the hard interface refcounter and - * possibly free it + * possibly release it * @hard_iface: the hard interface to free */ static inline void batadv_hardif_free_ref(struct batadv_hard_iface *hard_iface) { if (atomic_dec_and_test(&hard_iface->refcount)) - call_rcu(&hard_iface->rcu, batadv_hardif_free_rcu); + batadv_hardif_release(hard_iface); }
static inline struct batadv_hard_iface *