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From: Sven Eckelmann <sven@narfation.org>
Date: Tue, 29 Mar 2016 20:55:41 +0200
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Subject: Re: [B.A.T.M.A.N.] No rebroadcast on mesh links
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On Tuesday 29 March 2016 19:59:57 Adrian Reyer wrote:
[...]
> > It would also be interesting if it should be a simple flag or some if
> > exporting the num_bcasts via $something would be sufficient. Or if the
> > num_bcasts should be split into num_bcasts_otherif and
> > num_bcasts_sameif and then exported.
> 
> It is two different things, the num_bcasts in my understanding is about
> how many times the originator sends out its packets to assume everyone
> has received it.
> The flag we talk about is about if anyone receiving that packet on an
> interface has to send it out on that very interface at all, e.g. it is
> about everyone reachable via that interface sees the same neighbours
> (e.g. switch) or a different group (e.g. wlan adhoc)

Thats why I said that it would have to be split into *sameif and *otherif.

And btw. it is not about the originator. It is handled in 
batadv_send_outstanding_bcast_packet at the same place where you want to have 
the no_rebroadcast check. no_rebroadcast in the patch we are talking [1,2] 
about is currently just ignoring the num_bcasts of a hard-interface for some 
situations (when forw_packet->skb->dev == hard_iface->net_dev).

Kind regards,
	Sven

[1] https://patchwork.open-mesh.org/patch/3434/
[2] https://patchwork.open-mesh.org/patch/4384/

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