From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hal Rosenstock Subject: Re: [PATCH v4 14/19] IB/core: Add IB_DEVICE_OPA_MAD_SUPPORT device cap flag Date: Mon, 09 Mar 2015 17:23:11 -0400 Message-ID: <54FE0F3F.6060806@dev.mellanox.co.il> References: <1423092585-26692-1-git-send-email-ira.weiny@intel.com> <1423092585-26692-15-git-send-email-ira.weiny@intel.com> <54D52589.8020305@dev.mellanox.co.il> <2807E5FD2F6FDA4886F6618EAC48510E0CC244A8@CRSMSX101.amr.corp.intel.com> <54DCB1E9.7010309@dev.mellanox.co.il> <2807E5FD2F6FDA4886F6618EAC48510E0CC29020@CRSMSX101.amr.corp.intel.com> <54EB7756.7070407@dev.mellanox.co.il> <2807E5FD2F6FDA4886F6618EAC48510E0CC3D330@CRSMSX101.amr.corp.intel.com> <1424884438.4847.91.camel@redhat.com> <2807E5FD2F6FDA4886F6618EAC48510E0CC4F18C@CRSMSX101.amr.corp.intel.com> <20150306174729.GE22375@obsidianresearch.com> <2807E5FD2F6FDA4886F6618EAC48510E0CC53437@CRSMSX101.amr.corp.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <2807E5FD2F6FDA4886F6618EAC48510E0CC53437-8k97q/ur5Z2krb+BlOpmy7fspsVTdybXVpNB7YpNyf8@public.gmane.org> Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: "Weiny, Ira" Cc: Jason Gunthorpe , Doug Ledford , "roland-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org" , "linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" List-Id: linux-rdma@vger.kernel.org On 3/6/2015 5:47 PM, Weiny, Ira wrote: >> >> On Wed, Mar 04, 2015 at 07:21:48AM +0000, Weiny, Ira wrote: >> >>> I think this is going to break quite a bit. I have prototyped setting >>> OPA devices to "OPA Link Layer" and the perftest tools just fall over. >>> Any changes to the Link layer or the transport types will require a >>> transition period for ULPs. >> >> How do the perftest tools work with OPA in the first place? OPA seems to have >> 32 bit lids. Do you mean it 'works' as long as the lid is < 16 bits? Same general >> point about all of verbs, lots of 'uint16_t lid' in the interfaces? > > The 32 bit LIDs in the SMP are designed for future expansion. Currently OPA does not support > 16 bit LIDs. It's not just verbs (structures and APIs) but also CM and any other place where LID is used which are numerous. Is a new verbs coming for this ? How will compatibility be dealt with ? This is also another example why a more complete picture of OPA is needed. -- Hal > > Ira > > -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html