batman-adv: add bridge loop avoidance compile option

The define CONFIG_BATMAN_ADV_BLA switches the bridge loop avoidance
on - skip it, and the bridge loop avoidance is not compiled in.

This is useful if binary size should be saved or the feature is
not needed.

Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de>
Signed-off-by: Antonio Quartulli <ordex@autistici.org>

1 files changed, 11 insertions, 1 deletions

diff --git a/net/batman-adv/Kconfig b/net/batman-adv/Kconfig
index 6ff977c1f3bc..53f5244e28f8 100644
--- a/net/batman-adv/Kconfig
+++ b/net/batman-adv/Kconfig
@@ -4,7 +4,7 @@
 
 config BATMAN_ADV
         tristate "B.A.T.M.A.N. Advanced Meshing Protocol"
-        depends on NET && INET
+        depends on NET
         select CRC16
         default n
         help
@@ -14,6 +14,16 @@ config BATMAN_ADV
           http://www.open-mesh.org/ for more information and user space
           tools.
 
+config BATMAN_ADV_BLA
+        bool "Bridge Loop Avoidance"
+        depends on BATMAN_ADV && INET
+        default y
+        help
+          This option enables BLA (Bridge Loop Avoidance), a mechanism
+          to avoid Ethernet frames looping when mesh nodes are connected
+          to both the same LAN and the same mesh. If you will never use
+          more than one mesh node in the same LAN, you can safely remove
+          this feature and save some space.
 
 config BATMAN_ADV_DEBUG
         bool "B.A.T.M.A.N. debugging"