From: Roland Dreier <rdreier@cisco.com>
To: Christoph Lameter <cl@linux-foundation.org>
Cc: David Miller <davem@davemloft.net>,
netdev@vger.kernel.org, yosefe@Voltaire.COM
Subject: Re: IPoIB: Fix multicast packet drops before join is complete
Date: Fri, 05 Jun 2009 14:12:35 -0700 [thread overview]
Message-ID: <adafxeev0zg.fsf@cisco.com> (raw)
In-Reply-To: <alpine.DEB.1.10.0906051444360.29918@gentwo.org> (Christoph Lameter's message of "Fri, 5 Jun 2009 15:17:26 -0400 (EDT)")
> > Yes -- and the required IB multicast resolution seems like it is an L2
> > thing precisely analogous to ARP. So I think the original IPoIB code
> > actually was doing the right thing.
>
> Then why dont the 1G NICs do the same?
ethernet is a different L2 -- you don't have to resolve an IP multicast
address to an L2 address the way you do for IPoIB.
My point is just that multicast group join is the same sort of L2
resolution as ARP is for ethernet, and so having the same sort of
behavior makes sense.
- R.
next prev parent reply other threads:[~2009-06-05 21:12 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-02 14:49 IPoIB: Fix multicast packet drops before join is complete Christoph Lameter
2009-06-04 5:41 ` David Miller
2009-06-04 14:28 ` Or Gerlitz
2009-06-04 15:52 ` Christoph Lameter
2009-06-04 22:30 ` David Miller
2009-06-05 14:18 ` Christoph Lameter
2009-06-05 16:56 ` Roland Dreier
2009-06-05 19:17 ` Christoph Lameter
2009-06-05 21:12 ` Roland Dreier [this message]
2009-06-06 1:17 ` David Miller
2009-06-05 21:13 ` Roland Dreier
2009-06-08 15:16 ` Christoph Lameter
2009-06-06 1:16 ` David Miller
2009-06-08 15:20 ` Christoph Lameter
2009-06-08 21:29 ` David Miller
2009-06-09 20:52 ` Roland Dreier
2009-06-10 0:45 ` David Miller
2009-06-10 3:55 ` Roland Dreier
2009-06-10 4:57 ` David Miller
2009-06-10 5:04 ` Roland Dreier
2009-06-10 5:12 ` David Miller
2009-06-10 10:18 ` Or Gerlitz
2009-06-10 12:01 ` David Miller
2009-06-11 11:45 ` Or Gerlitz
2009-06-11 11:57 ` David Miller
2009-06-11 15:07 ` Christoph Lameter
2009-06-11 23:58 ` David Miller
2009-06-12 14:17 ` Christoph Lameter
2009-06-05 16:54 ` Roland Dreier
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