From: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
To: Christoph Lameter <cl@linux.com>
Cc: David Stevens <dlstevens@us.ibm.com>,
linux-rdma@vger.kernel.org, netdev@vger.kernel.org,
Bob Arendt <rda@rincon.com>
Subject: Re: igmp: Staggered igmp report intervals for unsolicited igmp reports
Date: Thu, 23 Sep 2010 11:26:03 -0600 [thread overview]
Message-ID: <20100923172603.GM11157@obsidianresearch.com> (raw)
In-Reply-To: <alpine.DEB.2.00.1009231026510.32567@router.home>
On Thu, Sep 23, 2010 at 10:32:17AM -0500, Christoph Lameter wrote:
> > Is the issue you are dropping IGMP packets because the 224.0.0.2 join
> > hasn't finished? Ideally you'd wait for the SA to reply before sending
> > a IGMP, but a simpler solution might just be to use the broadcast MLID
> > for packets addressed to a MGID that has not yet got a MLID. This
> > would bebe similar to the ethernet behaviour of flooding.
>
> IGMP reports are sent on the multicast group not on 224.0.0.2. 224.0.0.2
> is only used when leaving a multicast group.
Hm, that is quite different than in IGMPv3.. How does this work at all
in IB? A message to the multicast group isn't going to make it to any
routers unless the routers use some other means to join the IB MGID.
Jason
next prev parent reply other threads:[~2010-09-23 17:26 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-22 18:59 igmp: Allow mininum interval specification for igmp timers Christoph Lameter
[not found] ` <alpine.DEB.2.00.1009221354410.32661-sBS69tsa9Uj/9pzu0YdTqQ@public.gmane.org>
2010-09-22 19:01 ` igmp: Staggered igmp report intervals for unsolicited igmp reports Christoph Lameter
[not found] ` <alpine.DEB.2.00.1009221400010.32661-sBS69tsa9Uj/9pzu0YdTqQ@public.gmane.org>
2010-09-22 19:30 ` David Stevens
[not found] ` <OFF06BBC88.0B6755D5-ON882577A6.0068F4F8-882577A6.006B31FB-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2010-09-22 19:58 ` Christoph Lameter
2010-09-22 20:56 ` Bob Arendt
[not found] ` <4C9A6D87.2000103-x0S3BwdUo6DQT0dZR+AlfA@public.gmane.org>
2010-09-22 21:33 ` Christoph Lameter
2010-09-22 21:41 ` David Stevens
2010-09-23 15:37 ` Christoph Lameter
[not found] ` <alpine.DEB.2.00.1009231021080.32567-sBS69tsa9Uj/9pzu0YdTqQ@public.gmane.org>
2010-09-27 19:24 ` David Stevens
[not found] ` <alpine.DEB.2.00.1009221448460.32661-sBS69tsa9Uj/9pzu0YdTqQ@public.gmane.org>
2010-09-22 20:36 ` David Stevens
2010-09-22 21:26 ` Christoph Lameter
2010-09-22 21:50 ` Jason Gunthorpe
2010-09-23 15:32 ` Christoph Lameter
2010-09-23 17:26 ` Jason Gunthorpe [this message]
[not found] ` <20100923172603.GM11157-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2010-09-23 17:37 ` Christoph Lameter
[not found] ` <alpine.DEB.2.00.1009231230100.2962-sBS69tsa9Uj/9pzu0YdTqQ@public.gmane.org>
2010-09-23 17:46 ` Jason Gunthorpe
[not found] ` <20100923174614.GN11157-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2010-09-23 17:56 ` Christoph Lameter
2010-09-27 19:32 ` David Stevens
2010-09-24 4:38 ` igmp: Allow mininum interval specification for igmp timers David Miller
[not found] ` <20100923.213823.137834706.davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>
2010-09-27 17:41 ` David Stevens
[not found] ` <OF4BA8F9C2.467056E9-ON882577AB.005F4832-882577AB.00612DD6-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2010-09-27 17:54 ` David Miller
[not found] ` <20100927.105444.214208865.davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>
2010-09-27 18:16 ` David Stevens
2010-09-27 19:55 ` David Stevens
2010-09-27 20:20 ` Christoph Lameter
[not found] ` <alpine.DEB.2.00.1009271503420.14117-sBS69tsa9Uj/9pzu0YdTqQ@public.gmane.org>
2010-09-27 21:45 ` David Stevens
[not found] ` <OF4DDFA464.A933254C-ON882577AB.00754000-882577AB.00778C77-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2010-09-28 18:42 ` Christoph Lameter
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