Hi Vinay,
I am having trouble finding binaries of batman-adv 2011.0 for OpenWRT . Are they available or do I have to build them myself ?
as Linus already pointed out - bridge loop avoidance is not available before batman-adv 2011.0.0. That is what you need to address first.
Where did you get the binaries for batman-adv 2010.1.0 ? Does this source also provide newer binaries ? Unlike user space application a kernel module heavily depends on your system (kernel version / patches / etc). Which means nobody can give you binaries without having access to exactly the same system you are using.
Regards, Marek