batman-adv: add critical bug fix

Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>



git-svn-id: svn://svn.openwrt.org/openwrt/packages@28472 3c298f89-4303-0410-b956-a3cf2f4a3e73

net/batman-adv/patches/batman-adv_fix_tt_local_reset_flags_function.patch

@@ -0,0 +1,31 @@
+From: Antonio Quartulli <ordex@autistici.org>
+
+Currently the counter of tt_local_entry structures (tt_local_num) is incremented
+each time the tt_local_reset_flags() is invoked causing the node to send wrong
+TT_REPONSE packets containing a copy of non-initialised memory thus corrupting
+other nodes global translation table and making higher level communication
+impossible.
+
+Reported-by: Junkeun Song <jun361@gmail.com>
+Signed-off-by: Antonio Quartulli <ordex@autistici.org>
+Acked-by: Junkeun Song <jun361@gmail.com>
+---
+ translation-table.c |    2 ++
+ 1 files changed, 2 insertions(+), 0 deletions(-)
+
+diff --git a/translation-table.c b/translation-table.c
+index 2d2cfc1..d4a3917 100644
+--- a/translation-table.c
++++ b/translation-table.c
+@@ -1727,6 +1727,8 @@ static void tt_local_reset_flags(struct bat_priv *bat_priv, uint16_t flags)
+ 		rcu_read_lock();
+ 		hlist_for_each_entry_rcu(tt_local_entry, node,
+ 					 head, hash_entry) {
++			if (!(tt_local_entry->flags & flags))
++				continue;
+ 			tt_local_entry->flags &= ~flags;
+ 			atomic_inc(&bat_priv->num_local_tt);
+ 		}
+-- 
+1.7.3.4
+