From: Antonio Quartulli <a@unstable.cc>
To: The list for a Better Approach To Mobile Ad-hoc Networking
<b.a.t.m.a.n@lists.open-mesh.org>
Subject: Re: [B.A.T.M.A.N.] [PATCHv3 2/6] batman-adv: speed up dat by snooping received ip traffic
Date: Fri, 20 May 2016 21:51:38 +0800 [thread overview]
Message-ID: <20160520135138.GV12056@prodigo.lan> (raw)
In-Reply-To: <1462525107-19750-3-git-send-email-apape@phoenixcontact.com>
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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. This
means that when you are snooping an IP packet you have already snooped an ARP
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 affect
the performance ? Have you tried measuring the difference ?
Cheers,
--
Antonio Quartulli
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next prev parent reply other threads:[~2016-05-20 13:51 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-06 8:58 [B.A.T.M.A.N.] [PATCHv3 0/6] batman-adv: Optimizations for setups running dat and bla Andreas Pape
2016-05-06 8:58 ` [B.A.T.M.A.N.] [PATCHv3 1/6] batman-adv: prevent multiple ARP replies sent by gateways if dat enbled Andreas Pape
2016-05-06 8:58 ` [B.A.T.M.A.N.] [PATCHv3 2/6] batman-adv: speed up dat by snooping received ip traffic Andreas Pape
2016-05-06 9:53 ` Sven Eckelmann
2016-05-06 10:03 ` Sven Eckelmann
2016-05-19 19:33 ` Linus Lüssing
2016-05-19 22:22 ` Linus Lüssing
2016-05-19 19:45 ` Linus Lüssing
2016-05-19 20:30 ` Linus Lüssing
2016-05-19 22:48 ` Linus Lüssing
2016-05-19 23:11 ` Linus Lüssing
2016-05-20 11:32 ` [B.A.T.M.A.N.] Antwort: " Andreas Pape
2016-05-20 12:56 ` Antonio Quartulli
2016-05-20 13:51 ` Antonio Quartulli [this message]
2016-06-13 13:45 ` [B.A.T.M.A.N.] " Andreas Pape
2016-06-23 20:34 ` Linus Lüssing
2016-05-06 8:58 ` [B.A.T.M.A.N.] [PATCHv3 3/6] batman-adv: prevent duplication of ARP replies when DAT is used Andreas Pape
2016-05-06 8:58 ` [B.A.T.M.A.N.] [PATCHv3 4/6] batman-adv: drop unicast packets from other backbone gw Andreas Pape
2016-05-06 10:43 ` Sven Eckelmann
2016-05-06 8:58 ` [B.A.T.M.A.N.] [PATCHv3 5/6] batman-adv: changed debug messages for easier bla debugging Andreas Pape
2016-05-06 8:58 ` [B.A.T.M.A.N.] [PATCHv3 6/6] batman-adv: handle race condition for claims between gateways Andreas Pape
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