Repository : ssh://git@open-mesh.org/batman-adv
On branch : maint
commit 9b9cdbe28e2b9c8bdf9c761f22ba9655963d13d4 Author: Simon Wunderlich simon@open-mesh.com Date: Wed Mar 26 15:46:24 2014 +0100
batman-adv: fix removing neigh_ifinfo
When an interface is removed separately, all neighbors need to be checked if they have a neigh_ifinfo structure for that particular interface. If that is the case, remove that ifinfo so any references to a hard interface can be freed.
This is a regression introduced by 9bb33b8d88e318c4879d37d06ad28e3e018b9036 ("batman-adv: split tq information in neigh_node struct")
Reported-by: Antonio Quartulli antonio@open-mesh.com Signed-off-by: Simon Wunderlich simon@open-mesh.com Signed-off-by: Marek Lindner mareklindner@neomailbox.ch
9b9cdbe28e2b9c8bdf9c761f22ba9655963d13d4 originator.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+)
diff --git a/originator.c b/originator.c index 47b0886..aa2468b 100644 --- a/originator.c +++ b/originator.c @@ -702,6 +702,47 @@ free_orig_node: }
/** + * batadv_purge_neigh_ifinfo - purge obsolete ifinfo entries from neighbor + * @bat_priv: the bat priv with all the soft interface information + * @neigh_node: orig node which is to be checked + */ +static void +batadv_purge_neigh_ifinfo(struct batadv_priv *bat_priv, + struct batadv_neigh_node *neigh) +{ + struct batadv_neigh_ifinfo *neigh_ifinfo; + struct batadv_hard_iface *if_outgoing; + struct hlist_node *node_tmp; + + spin_lock_bh(&neigh->ifinfo_lock); + + /* for all ifinfo objects for this neighinator */ + hlist_for_each_entry_safe(neigh_ifinfo, node_tmp, + &neigh->ifinfo_list, list) { + if_outgoing = neigh_ifinfo->if_outgoing; + + /* always keep the default interface */ + if (if_outgoing == BATADV_IF_DEFAULT) + continue; + + /* don't purge if the interface is not (going) down */ + if ((if_outgoing->if_status != BATADV_IF_INACTIVE) && + (if_outgoing->if_status != BATADV_IF_NOT_IN_USE) && + (if_outgoing->if_status != BATADV_IF_TO_BE_REMOVED)) + continue; + + batadv_dbg(BATADV_DBG_BATMAN, bat_priv, + "neighbor/ifinfo purge: neighbor %pM, iface: %s\n", + neigh->addr, if_outgoing->net_dev->name); + + hlist_del_rcu(&neigh_ifinfo->list); + batadv_neigh_ifinfo_free_ref(neigh_ifinfo); + } + + spin_unlock_bh(&neigh->ifinfo_lock); +} + +/** * batadv_purge_orig_ifinfo - purge obsolete ifinfo entries from originator * @bat_priv: the bat priv with all the soft interface information * @orig_node: orig node which is to be checked @@ -800,6 +841,11 @@ batadv_purge_orig_neighbors(struct batadv_priv *bat_priv,
hlist_del_rcu(&neigh_node->list); batadv_neigh_node_free_ref(neigh_node); + } else { + /* only neccesary if not the whole neighbor is to be deleted, + * but some interface has been removed. + */ + batadv_purge_neigh_ifinfo(bat_priv, neigh_node); } }