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authorLinus Lüssing <linus.luessing@c0d3.blue>2016-05-10 19:41:25 +0300
committerSimon Wunderlich <sw@simonwunderlich.de>2016-06-30 11:29:43 +0300
commit687937ab34896d9c39b80b68d304c68ca3c2b207 (patch)
tree0b7ff9fcb9693ecbcfc312c09f7015cfef2cac63 /net/batman-adv/Kconfig
parentbd2a979e53fd9dd64b7e27553a23001d53201005 (diff)
downloadlinux-687937ab34896d9c39b80b68d304c68ca3c2b207.tar.xz
batman-adv: Add multicast optimization support for bridged setups
With this patch we are finally able to support multicast optimizations in bridged setups, too. So far, if a bridge was added on top of a soft-interface (e.g. bat0) the batman-adv multicast optimizations needed to be disabled to avoid packetloss. Current Linux bridge implementations and API can now provide us with the so far missing information about interested but "remote" multicast receivers behind bridge ports. The Linux bridge performs the detection of remote participants interested in multicast packets with its own and mature so called IGMP and MLD snooping code and stores that in its database. With the new API provided by the bridge batman-adv can now simply hook into this database. We then reliably announce the gathered multicast listeners to other nodes through the batman-adv translation table. Additionally, the Linux bridge provides us with the information about whether an IGMP/MLD querier exists. If there is none then we need to disable multicast optimizations as we cannot learn about multicast listeners on external, bridged-in host then. Tested-by: Simon Wunderlich <sw@simonwunderlich.de> Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Diffstat (limited to 'net/batman-adv/Kconfig')
-rw-r--r--net/batman-adv/Kconfig2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/batman-adv/Kconfig b/net/batman-adv/Kconfig
index b7ba97dbf4a9..833bb145ba3c 100644
--- a/net/batman-adv/Kconfig
+++ b/net/batman-adv/Kconfig
@@ -66,7 +66,7 @@ config BATMAN_ADV_NC
config BATMAN_ADV_MCAST
bool "Multicast optimisation"
- depends on BATMAN_ADV && INET
+ depends on BATMAN_ADV && INET && !(BRIDGE=m && BATMAN_ADV=y)
default n
help
This option enables the multicast optimisation which aims to