batman-adv: enable MCAST by default at compile time

Thanks to rigorous testing in wireless community mesh networks several
issues with multicast entries in the translation table were found and
fixed in the last 1.5 years. Now we see the first larger networks
(a few hundred nodes) with a batman-adv version with multicast
optimizations enabled arising, with no TT / multicast optimization
related issues so far.

Therefore it seems safe to enable multicast optimizations by default.

Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>

diff --git a/net/batman-adv/Kconfig b/net/batman-adv/Kconfig
index d6b94559f888a3491890e3a20109af7fb6e9babc..c386e69814169306ed31c9692f624b3b641f6fa1 100644 (file)
--- a/net/batman-adv/Kconfig
+++ b/net/batman-adv/Kconfig
@@ -82,6 +82,7 @@ config BATMAN_ADV_NC
 config BATMAN_ADV_MCAST
        bool "Multicast optimisation"
        depends on BATMAN_ADV && INET && !(BRIDGE=m && BATMAN_ADV=y)
+       default y
        help
          This option enables the multicast optimisation which aims to
          reduce the air overhead while improving the reliability of