batman-adv: only drop packets of known wifi clients

commit 5870adc68fc39d81089f1e80efdf64b97e5c37a1 upstream.

bug introduced with 59b699cdee039d75915c354da06937102d1f9a84

If the source or destination mac address of an ethernet packet
could not be found in the translation table the packet was
dropped if AP isolation was turned on. This behavior would
make it impossible to send broadcast packets over the mesh as
the broadcast address will never enter the translation table.

Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
Acked-by: Antonio Quartulli <ordex@autistici.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c
index 1f86921278404ce2f17597a2c9a53fe602021d3c..f014bf83aed68fa68465ed301ee3dd242deb5c7b 100644 (file)
--- a/net/batman-adv/translation-table.c
+++ b/net/batman-adv/translation-table.c
@@ -1803,10 +1803,10 @@ bool is_ap_isolated(struct bat_priv *bat_priv, uint8_t *src, uint8_t *dst)
 {
        struct tt_local_entry *tt_local_entry = NULL;
        struct tt_global_entry *tt_global_entry = NULL;
-       bool ret = true;
+       bool ret = false;
 
        if (!atomic_read(&bat_priv->ap_isolation))
-               return false;
+               goto out;
 
        tt_local_entry = tt_local_hash_find(bat_priv, dst);
        if (!tt_local_entry)
@@ -1816,10 +1816,10 @@ bool is_ap_isolated(struct bat_priv *bat_priv, uint8_t *src, uint8_t *dst)
        if (!tt_global_entry)
                goto out;
 
-       if (_is_ap_isolated(tt_local_entry, tt_global_entry))
+       if (!_is_ap_isolated(tt_local_entry, tt_global_entry))
                goto out;
 
-       ret = false;
+       ret = true;
 
 out:
        if (tt_global_entry)