set_primary_if exchanges the current primary interfaces with a new one. This is a new reference and thus we have to count it and decrease the count of the old primary interface.
Signed-off-by: Sven Eckelmann sven.eckelmann@gmx.de --- I would like to keep that order of hold -> exchange -> put for later changes (rcu or something like that for primary_if and curr_gw).
batman-adv/hard-interface.c | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/batman-adv/hard-interface.c b/batman-adv/hard-interface.c index f519b4b..942a44a 100644 --- a/batman-adv/hard-interface.c +++ b/batman-adv/hard-interface.c @@ -113,9 +113,17 @@ static void set_primary_if(struct bat_priv *bat_priv, { struct batman_packet *batman_packet; struct vis_packet *vis_packet; + struct batman_if *old_if;
+ if (batman_if) + hardif_hold(batman_if); + + old_if = bat_priv->primary_if; bat_priv->primary_if = batman_if;
+ if (old_if) + hardif_put(old_if); + if (!bat_priv->primary_if) return;