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From: Sven Eckelmann <sven@narfation.org>
Date: Tue, 21 Feb 2017 18:13:00 +0100
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References: <33547cb0-a540-e0b9-ffc7-99ac67c3d516@viisauksena.de>
 <20170221162435.GC25818@lunn.ch>
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Subject: Re: [B.A.T.M.A.N.] Interface limit 127 in bat0?!
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On Dienstag, 21. Februar 2017 17:24:35 CET Andrew Lunn wrote:
> > |Error - can't write to file
> > '/sys/class/net/gre127/batman_adv/mesh_iface': Cannot allocate memory|
> 
> As the message suggests, you are out of memory. This is not a BATMAN
> limit, it is a limit from the amount of RAM you have in your device.

contiguous kernel memory to store the per-interface originator data - to
be more precise. See batadv_iv_ogm_orig_add_if and all kmalloc*/kfree
references with bcast_own/bcast_own_sum

On Dienstag, 21. Februar 2017 17:19:42 CET jens wrote:
> i observe a limit of 127 interfaces which can be hooked into bat0
> where do i find this limit, or does somebody can tell me more about
> this? Or, if it is a good idea to circumwent this at all? Or, if its
> even possible in actual protocoll structure.

And we had this discussion before [1]. Not sure why you are now
pretending that this never happened.

Kind regards,
	Sven

[1] https://lists.open-mesh.org/pipermail/b.a.t.m.a.n/2017-January/016824.html

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