[openib-general] Re: [PATCH] [RFC] - dapl - dat_ep_free() can return without

James Lentini jlentini at netapp.com
Thu Apr 6 10:06:52 PDT 2006



On Tue, 4 Apr 2006, Steve Wise wrote:


> > What happens if a consumer attempts to free the EP from a callback? 
> 
> There are no direct consumer callbacks in usermode are there?  consumers
> call dat_evd_wait() or whatever and get scheduled.  Not like kernel
> mode...  Or am I confused?

You're right. The DAT consumer thread calling dat_ep_free() will never 
be a provider (or verbs) thread.

It looks like there needs to be some synchronization around destroying 
the cm_id with the dapli_thread(), though. 

Could we only delete the QP in dat_ep_free as Sean suggested and leave 
the cm_id cleanup for later as is being done now?



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