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From: Roland Dreier <roland@topspin.com>
To: hadi@cyberus.ca
Cc: "David S. Miller" <davem@davemloft.net>, netdev@oss.sgi.com
Subject: Re: Advice needed on IP-over-InfiniBand driver
Date: Sun, 19 Sep 2004 21:49:25 -0700	[thread overview]
Message-ID: <52y8j5r1d6.fsf@topspin.com> (raw)
In-Reply-To: <1095628759.1049.22.camel@jzny.localdomain> (jamal's message of "19 Sep 2004 17:19:19 -0400")

    jamal> Probably just easier to have his own private tables holding
    jamal> reference to neighbor entries instead of polluting the
    jamal> neighbor tables.  Listens to ARP events - on state
    jamal> transition to/from reachable state he queries his remote
    jamal> manager.

This does seem neater, but I don't know how to implement it.  How does
one hook into ARP events?

    jamal> Curious though if ARP still works even when that "path"
    jamal> thing hasnt been resolved.

ARP works because we can send broadcasts even without a path to a
specific destination.  (I'm leaving out the details of how IP
broadcast gets mapped to InfiniBand multicast)  When the system with
the IP we're looking for receives a broadcast ARP, it can use the HW
address in the ARP request to look up a path, so it can send an ARP
reply.

Thanks,
  Roland

  parent reply	other threads:[~2004-09-20  4:49 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-09-19  4:08 Advice needed on IP-over-InfiniBand driver Roland Dreier
2004-09-19 21:01 ` David S. Miller
2004-09-19 21:19   ` jamal
2004-09-20  2:34     ` David S. Miller
2004-09-20  4:51       ` Roland Dreier
2004-09-20  4:49     ` Roland Dreier [this message]
2004-09-21 11:35       ` jamal
2004-09-21 15:23         ` Roland Dreier
2004-09-20  4:42   ` Roland Dreier
2004-09-28  4:41   ` Roland Dreier
2004-09-28  4:52     ` David S. Miller
2004-09-30 18:41       ` Roland Dreier
2004-09-30 21:21         ` David Stevens
2004-09-30 21:48           ` Roland Dreier

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