On Wed, 2006-06-14 at 17:22, Michael S. Tsirkin wrote: > Quoting r. Sean Hefty <[EMAIL PROTECTED]>: > > Subject: Re: RFC: detecting duplicate MAD requests > > > > Michael S. Tsirkin wrote: > > >>We're kind of left with the same issue of trying to determine if a > > >>received > > >>MAD will generate a response. > > > > > > > > > How do you mean? We have IsDS=1 flag for dual-sided, don't we? Dual-sided > > > transfer always has a response, doesn't it? > > I mean, the flag in the application that says that the transfer is dual-sided. > The spec seems to imply that user can figure *from the method* that IsDS=1, > so I > assume users will have this logic: > > "2) > Begin the initial transfer by starting the send operation at the point > labelled > Send. The method or other indication should be interpreted on > the other side as initiating a double-sided transfer, causing the receive > context to set IsDS=1." > > > So why does the MAD layer care whether a received MAD will generate a resonse? > A request arrives - we pass it up. Now the ACK for the direction switch > arrives > - we pass it up too, application should be waiting for it, it should take the > window and pass the response back to us.
The ACKs are transparent to the application/user. -- Hal _______________________________________________ openib-general mailing list [email protected] http://openib.org/mailman/listinfo/openib-general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
