Roland This thread also indirectly brings up the issue of OpenFabrics, RNIC, and QoS.
The RNIC devices don't have to be, but are typically unified wire devices, i.e. have simultaneous support for regular Ethernet NIC functions such as LSO/TSO and checksum offloads; iSCSI HBA initiator and/or target functionality; RNIC functionality; and TCP/IP offload. All the usual Ethernet TCP/IP management and configuration tools work as expected for such a device, e.g. for the purpose of this discussion QoS configuration with DiffServ, etc. At the same time: if there's an OpenFabrics QoS API, then this API needs to be transport agnostic, such that RNIC QoS can be configured through this same OpenFabrics QoS API. To be clear: the QoS requirements presented in the RFC look quite reasonable for an RNIC device, but the initial proposal didn't abstract out non-essential (to QoS) IB detail. Regards, Asgeir Eiriksson CTO Chelsio Communications Inc. > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:openib-general- > [EMAIL PROTECTED] On Behalf Of Roland Dreier > Sent: Tuesday, May 30, 2006 7:44 AM > To: Eitan Zahavi > Cc: Nimrod Gindi; Roland Dreier; [email protected] > Subject: [openib-general] Re: QoS RFC > > > Service-ID: > > * For PathRecord: use the first 2 reserved fields whicg are 32bits each > > (component masks 0x1 and 0x2). Component mask 1 should be used to > > refer to the > > merged Service-ID field > > > A new capability bit should describe the SM QoS support in the SA class > > port > > info. This approach provides an easy migration path for existing access > > layer > > and ULPs by not introducing a new attribute. > > This is OK but it's sort of a pain to have to query SA ClassPortInfo > all the time. Do you have a plan for how to make this transparent to > ULPs? > > (BTW something in your email client is really messing up the > formatting of your message) > > - R. > _______________________________________________ > openib-general mailing list > [email protected] > http://openib.org/mailman/listinfo/openib-general > > To unsubscribe, please visit http://openib.org/mailman/listinfo/openib- > general _______________________________________________ openib-general mailing list [email protected] http://openib.org/mailman/listinfo/openib-general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
