On Freitag, 16. März 2018 21:24:32 CET Sven Eckelmann wrote:
> On Freitag, 16. März 2018 11:29:11 CET Matthias Schiffer wrote:
> > +       skb_push_rcsum(skb, hdr_size);
> 
> This function is only available since Linux 4.7. Compat code support must 
> be added to avoid build problems with oler kernels. An example can be
> found in 
> https://git.open-mesh.org/batman-adv.git/commit/9f2b23430dec8caceedf996eb8ec75d3f8674144

Looks like the dependency skb_postpush_rcsum was added in 4.5. The
corrected version can be found in 
https://git.open-mesh.org/batman-adv.git/commit/9269709d9dabf13e70f1be2fe622278648f47017

Kind regards,
	Sven