Re: [PATCH for-next 3/4] IB/core: Support new type of join-state for multicast

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On Fri, Apr 29, 2016 at 12:27:30PM -0400, Hal Rosenstock wrote:
> > You can never have a SendOnly_FullMember join.  Once you are FullMember,
> > you are no longer SendOnly.
> > 
> > Is a NonMember (assuming here that NonMember is referring to what the CA
> > is listed as according to the SM) even allowed to join, either as
> > SendOnly or FullMember?  I would have thought if the SM listed that CA
> > as a NonMember, that any joins would be flat rejected and NonMember join
> > states wouldn't make any sense.
> 
> There is now a new SendOnlyFullMember option added by IBTA MgtWG post
> IBA 1.3.

As I understand it, this is done because the SendOnly Non-Member
essentially has useless reference counting semantics. FullMember
allows the group to be auto-created and continue to exist even if
there is only one SendOnly member.

Jason
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