Re: [PATCH for-4.3] IB/ipoib: add module option for auto-creating mcast groups

[Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>]

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On 09/16/2015 11:59 AM, Christoph Lameter wrote:
> On Wed, 16 Sep 2015, Doug Ledford wrote:
> 
>>> Abusing it for send-side is probably the wrong
>>> direction overall.
>>
>> I wouldn't "abuse" it for such, I would suggest adding a proper notion
>> of send-only registrations.
> 
> That is really not necessary for IP traffic. There is no need to track
> these since multicast can be send without subscriptions. So I guess that
> there will not be much support on netdev for such an approach.

I agree with you that it's not necessary for Ethernet/IP traffic.  The
point is that this isn't really Ethernet/IP traffic, it's InfiniBand/IP
traffic.  And there it *is* necessary.  An argument can be made that the
core code shouldn't assume Ethernet/IP and should support either
Ethernet/IP or InfiniBand/IP.


-- 
Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
              GPG KeyID: 0E572FDD



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