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From: "Hefty, Sean" <sean.hefty-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
To: Hal Rosenstock
	<hal-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>,
	"Weiny, Ira" <ira.weiny-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Cc: "roland-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org"
	<roland-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
	"linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
	<linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: RE: [PATCH 16/20] IB/mad: Add Intel Omni-Path Architecture defines
Date: Mon, 19 Jan 2015 18:28:14 +0000	[thread overview]
Message-ID: <1828884A29C6694DAF28B7E6B8A8237399E4F4BA@ORSMSX109.amr.corp.intel.com> (raw)
In-Reply-To: <54BD3DCA.2050208-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>

> Currently, these patches are claiming values that are controlled by an
> established standards organization. It is the equivalent of just
> grabbing a currently unused Ethertype value for a new protocol and then
> claiming that whenever the IEEE allocates it for something else you will
> make changes to resolve the conflict.

It would be equivalent if OPA was Infiniband, but it is not.  It is a separate architecture, with an entirely separate name space.  Conceptually, it is similar to the IB GRH and the IPv6 header.  They have a similar structure, but they are not the same.  The IBTA can define a new GRH field values, such as NxtHdr, without consulting or getting approval from the IETF.

Ira could introduce patches to define OPA management packets, but the general structure of those packet headers would be exactly the same as IB management packets.  There's no need to introduce duplicate definitions into the code base.  The existing structures can be reused.  However, OPA makes use of different values for the fields.

- Sean

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  parent reply	other threads:[~2015-01-19 18:28 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-01-12 17:10 [PATCH 00/20] IB/mad: Add support for Intel Omni-Path Architecture (OPA) MAD processing ira.weiny-ral2JQCrhuEAvxtiuMwx3w
     [not found] ` <1421082672-22588-1-git-send-email-ira.weiny-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2015-01-12 17:10   ` [PATCH 01/20] IB/mad: Rename is_data_mad to is_rmpp_data_mad ira.weiny-ral2JQCrhuEAvxtiuMwx3w
2015-01-12 17:10   ` [PATCH 02/20] IB/core: Cache device attributes for use by upper level drivers ira.weiny-ral2JQCrhuEAvxtiuMwx3w
     [not found]     ` <1421082672-22588-3-git-send-email-ira.weiny-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2015-01-14  6:08       ` Or Gerlitz
     [not found]         ` <54B607F2.3020904-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2015-01-14 16:20           ` Weiny, Ira
2015-01-12 17:10   ` [PATCH 03/20] IB/mad: Change validate_mad signature to take ib_mad_hdr rather than ib_mad ira.weiny-ral2JQCrhuEAvxtiuMwx3w
2015-01-12 17:10   ` [PATCH 04/20] IB/mad: Change ib_response_mad " ira.weiny-ral2JQCrhuEAvxtiuMwx3w
2015-01-12 17:10   ` [PATCH 05/20] IB/mad: Change cast in rcv_has_same_class ira.weiny-ral2JQCrhuEAvxtiuMwx3w
     [not found]     ` <1421082672-22588-6-git-send-email-ira.weiny-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2015-01-14  6:11       ` Or Gerlitz
     [not found]         ` <54B608AE.5040900-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2015-01-14 16:19           ` Weiny, Ira
2015-01-12 17:10   ` [PATCH 06/20] IB/core: Add mad_size to ib_device_attr ira.weiny-ral2JQCrhuEAvxtiuMwx3w
     [not found]     ` <1421082672-22588-7-git-send-email-ira.weiny-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2015-01-14  6:13       ` Or Gerlitz
     [not found]         ` <54B608FB.8020901-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2015-01-14 18:21           ` Weiny, Ira
2015-01-12 17:10   ` [PATCH 07/20] IB/mad: Convert ib_mad_private allocations from kmem_cache to kmalloc ira.weiny-ral2JQCrhuEAvxtiuMwx3w
2015-01-12 17:11   ` [PATCH 08/20] IB/mad: Add helper function for smi_handle_dr_smp_send ira.weiny-ral2JQCrhuEAvxtiuMwx3w
2015-01-12 17:11   ` [PATCH 09/20] IB/mad: Add helper function for smi_handle_dr_smp_recv ira.weiny-ral2JQCrhuEAvxtiuMwx3w
2015-01-12 17:11   ` [PATCH 10/20] IB/mad: Add helper function for smi_check_forward_dr_smp ira.weiny-ral2JQCrhuEAvxtiuMwx3w
2015-01-12 17:11   ` [PATCH 11/20] IB/mad: Add helper function for SMI processing ira.weiny-ral2JQCrhuEAvxtiuMwx3w
2015-01-12 17:11   ` [PATCH 12/20] IB/mad: Add MAD size parameters to process_mad ira.weiny-ral2JQCrhuEAvxtiuMwx3w
2015-01-12 17:11   ` [PATCH 13/20] IB/mad: Add base version parameter to ib_create_send_mad ira.weiny-ral2JQCrhuEAvxtiuMwx3w
2015-01-12 17:11   ` [PATCH 14/20] IB/core: Add IB_DEVICE_OPA_MAD_SUPPORT device cap flag ira.weiny-ral2JQCrhuEAvxtiuMwx3w
     [not found]     ` <1421082672-22588-15-git-send-email-ira.weiny-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2015-01-14  6:18       ` Or Gerlitz
     [not found]         ` <54B60A28.2030409-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2015-01-14 18:47           ` Weiny, Ira
2015-01-14  6:26       ` Or Gerlitz
     [not found]         ` <54B60C08.9090205-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2015-01-14 20:47           ` Weiny, Ira
2015-01-12 17:11   ` [PATCH 15/20] IB/mad: Create jumbo_mad data structures ira.weiny-ral2JQCrhuEAvxtiuMwx3w
     [not found]     ` <1421082672-22588-16-git-send-email-ira.weiny-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2015-01-14  6:19       ` Or Gerlitz
     [not found]         ` <54B60A75.4010103-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2015-01-14 18:39           ` Weiny, Ira
2015-01-12 17:11   ` [PATCH 16/20] IB/mad: Add Intel Omni-Path Architecture defines ira.weiny-ral2JQCrhuEAvxtiuMwx3w
     [not found]     ` <1421082672-22588-17-git-send-email-ira.weiny-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2015-01-15 14:10       ` Hal Rosenstock
     [not found]         ` <54B7CA4E.5050809-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2015-01-15 23:30           ` Weiny, Ira
     [not found]             ` <2807E5FD2F6FDA4886F6618EAC48510E0CC02AB4-8k97q/ur5Z2krb+BlOpmy7fspsVTdybXVpNB7YpNyf8@public.gmane.org>
2015-01-16 14:56               ` Hal Rosenstock
     [not found]                 ` <54B9268B.7080600-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2015-01-16 19:49                   ` Weiny, Ira
     [not found]                     ` <2807E5FD2F6FDA4886F6618EAC48510E0CC03441-8k97q/ur5Z2krb+BlOpmy7fspsVTdybXVpNB7YpNyf8@public.gmane.org>
2015-01-19 17:24                       ` Hal Rosenstock
     [not found]                         ` <54BD3DCA.2050208-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2015-01-19 18:28                           ` Hefty, Sean [this message]
     [not found]                             ` <1828884A29C6694DAF28B7E6B8A8237399E4F4BA-P5GAC/sN6hkd3b2yrw5b5LfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2015-01-19 19:57                               ` Weiny, Ira
     [not found]                                 ` <2807E5FD2F6FDA4886F6618EAC48510E0CC05436-8k97q/ur5Z2krb+BlOpmy7fspsVTdybXVpNB7YpNyf8@public.gmane.org>
2015-01-19 21:53                                   ` Jason Gunthorpe
     [not found]                                     ` <20150119215311.GH13469-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2015-01-19 22:50                                       ` Weiny, Ira
     [not found]                                         ` <2807E5FD2F6FDA4886F6618EAC48510E0CC05C0A-8k97q/ur5Z2krb+BlOpmy7fspsVTdybXVpNB7YpNyf8@public.gmane.org>
2015-01-20 18:15                                           ` Jason Gunthorpe
     [not found]                                             ` <20150120181557.GC31320-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2015-01-20 18:59                                               ` Weiny, Ira
2015-01-19 21:06                               ` Hal Rosenstock
2015-01-12 17:11   ` [PATCH 17/20] IB/mad: Add registration check for Intel Omni-Path Architecture MADs ira.weiny-ral2JQCrhuEAvxtiuMwx3w
2015-01-12 17:11   ` [PATCH 18/20] IB/mad: Implement support for Intel Omni-Path Architecture base version MADs in ib_create_send_mad ira.weiny-ral2JQCrhuEAvxtiuMwx3w
2015-01-12 17:11   ` [PATCH 19/20] IB/mad: Implement Intel Omni-Path Architecture SMP processing ira.weiny-ral2JQCrhuEAvxtiuMwx3w
2015-01-12 17:11   ` [PATCH 20/20] IB/mad: Implement Intel Omni-Path Architecture MAD processing ira.weiny-ral2JQCrhuEAvxtiuMwx3w

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