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Date: Fri, 20 May 2016 21:51:38 +0800
From: Antonio Quartulli <a@unstable.cc>
Message-ID: <20160520135138.GV12056@prodigo.lan>
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Subject: Re: [B.A.T.M.A.N.] [PATCHv3 2/6] batman-adv: speed up dat by
 snooping received ip traffic
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On Fri, May 06, 2016 at 10:58:23AM +0200, Andreas Pape wrote:
> Speeding up dat address lookup is achieved by snooping all incoming ip
> traffic. This especially increases the propability in bla setups that
> a gateway into a common backbone network already has a fitting dat entry
> to answer incoming ARP requests directly coming from the backbone
> network thus further reducing ARP traffic in the mesh.

Any IP packet can't be sent if an ARP "handshake" has not been performed. T=
his
means that when you are snooping an IP packet you have already snooped an A=
RP
packet slightly before. In which case do we really win something ?

On top of that, don't you think that snooping *every* packet will badly aff=
ect
the performance ? Have you tried measuring the difference ?


Cheers,

--=20
Antonio Quartulli

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