From: Or Gerlitz <ogerlitz-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
To: "Weiny, Ira" <ira.weiny-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Cc: Sagi Grimberg
<sagig-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>,
"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: [RFC PATCH 03/16] ib/mad: Add check for jumbo MADs support on a device
Date: Thu, 8 Jan 2015 13:41:36 +0200 [thread overview]
Message-ID: <54AE6CF0.30902@mellanox.com> (raw)
In-Reply-To: <2807E5FD2F6FDA4886F6618EAC48510E0CBEE86E-8k97q/ur5Z2krb+BlOpmy7fspsVTdybXVpNB7YpNyf8@public.gmane.org>
On 1/7/2015 6:32 PM, Weiny, Ira wrote:
>> >On 11/27/2014 3:51 PM, Sagi Grimberg wrote:
>>> > >We're already short on bits in device_cap_flags
>> >
>> >no shortage @ the kernel... we can add more 32 bits if/when we need it
> Why is there a gap in the bits?
>
> enum ib_device_cap_flags {
> ...
> IB_DEVICE_MEM_WINDOW_TYPE_2B = (1<<24),
> IB_DEVICE_MANAGED_FLOW_STEERING = (1<<29),
> ...
> };
>
> 25-28 are not used? Is there some legacy software out there which uses these?
sort of... the verbs RSS design which wasn't accepted upstream uses bits
25/26/27 and Mellanox Core-Direct (whose verbs model called
"Cross-Channel") which wasn't submitted upstream yet uses bit 28. Since
in the kernel we can trivially use 64 bits, I would opt to keep these
entries free for now.
Or.
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next prev parent reply other threads:[~2015-01-08 11:41 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-13 19:54 [RFC PATCH 00/16] ib_mad: Add support for Intel Omni-Path Architecture (OPA) MAD processing ira.weiny-ral2JQCrhuEAvxtiuMwx3w
[not found] ` <1415908465-24392-1-git-send-email-ira.weiny-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2014-11-13 19:54 ` [RFC PATCH 01/16] ib/mad: rename is_data_mad to is_rmpp_data_mad ira.weiny-ral2JQCrhuEAvxtiuMwx3w
2014-11-13 19:54 ` [RFC PATCH 02/16] ib/core: add IB_DEVICE_JUMBO_MAD_SUPPORT device cap flag ira.weiny-ral2JQCrhuEAvxtiuMwx3w
2014-11-13 19:54 ` [RFC PATCH 03/16] ib/mad: Add check for jumbo MADs support on a device ira.weiny-ral2JQCrhuEAvxtiuMwx3w
[not found] ` <1415908465-24392-4-git-send-email-ira.weiny-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2014-11-27 11:47 ` Or Gerlitz
[not found] ` <54770F44.2090909-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2014-11-27 13:51 ` Sagi Grimberg
[not found] ` <54772C70.8060602-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2014-11-27 14:59 ` Or Gerlitz
[not found] ` <54773C59.6080505-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2015-01-07 16:32 ` Weiny, Ira
[not found] ` <2807E5FD2F6FDA4886F6618EAC48510E0CBEE86E-8k97q/ur5Z2krb+BlOpmy7fspsVTdybXVpNB7YpNyf8@public.gmane.org>
2015-01-08 11:41 ` Or Gerlitz [this message]
2014-12-08 0:23 ` Weiny, Ira
[not found] ` <2807E5FD2F6FDA4886F6618EAC48510E0CBD4F23-8k97q/ur5Z2krb+BlOpmy7fspsVTdybXVpNB7YpNyf8@public.gmane.org>
2014-12-08 0:47 ` Roland Dreier
[not found] ` <CAG4TOxNt+0p+i1a6oN1xx+K_OZEuZhPJ5e=44KScnaGVA4E0SA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-12-09 23:23 ` Weiny, Ira
2014-12-08 11:29 ` Or Gerlitz
[not found] ` <CAJ3xEMj-0_0F+VoGZDes92ShFRTbt9Et4WWPt=viY5gx_P-oNg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-12-09 22:36 ` Weiny, Ira
[not found] ` <2807E5FD2F6FDA4886F6618EAC48510E0CBD7A97-8k97q/ur5Z2krb+BlOpmy7fspsVTdybXVpNB7YpNyf8@public.gmane.org>
2014-12-10 7:52 ` Or Gerlitz
2014-11-13 19:54 ` [RFC PATCH 04/16] ib/mad: add base version parameter to ib_create_send_mad ira.weiny-ral2JQCrhuEAvxtiuMwx3w
2014-11-13 19:54 ` [RFC PATCH 05/16] ib/mad: Add MAD size parameters to process_mad ira.weiny-ral2JQCrhuEAvxtiuMwx3w
2014-11-13 19:54 ` [RFC PATCH 06/16] ib/mad: Create jumbo_mad data structures ira.weiny-ral2JQCrhuEAvxtiuMwx3w
2014-11-13 19:54 ` [RFC PATCH 07/16] ib/mad: create a jumbo MAD kmem_cache ira.weiny-ral2JQCrhuEAvxtiuMwx3w
[not found] ` <1415908465-24392-8-git-send-email-ira.weiny-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2014-11-27 11:50 ` Or Gerlitz
[not found] ` <54770FF4.3070807-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2014-12-05 21:25 ` Weiny, Ira
2014-11-13 19:54 ` [RFC PATCH 08/16] ib/mad: Add Intel Omni-Path Architecture defines ira.weiny-ral2JQCrhuEAvxtiuMwx3w
2014-11-13 19:54 ` [RFC PATCH 09/16] ib/mad: Implement support for Intel Omni-Path Architecture base version MADs in ib_create_send_mad ira.weiny-ral2JQCrhuEAvxtiuMwx3w
2014-11-13 19:54 ` [RFC PATCH 10/16] ib/mad: Add registration check for Intel Omni-Path Architecture MADs ira.weiny-ral2JQCrhuEAvxtiuMwx3w
2014-11-13 19:54 ` [RFC PATCH 11/16] ib/mad: create helper function for smi_handle_dr_smp_send ira.weiny-ral2JQCrhuEAvxtiuMwx3w
2014-11-13 19:54 ` [RFC PATCH 12/16] ib/mad: create helper function for smi_handle_dr_smp_recv ira.weiny-ral2JQCrhuEAvxtiuMwx3w
2014-11-13 19:54 ` [RFC PATCH 13/16] ib/mad: create helper function for smi_check_forward_dr_smp ira.weiny-ral2JQCrhuEAvxtiuMwx3w
2014-11-13 19:54 ` [RFC PATCH 14/16] ib/mad: Create helper function for SMI processing ira.weiny-ral2JQCrhuEAvxtiuMwx3w
2014-11-13 19:54 ` [RFC PATCH 15/16] ib/mad: Implement Intel Omni-Path Architecture SMP processing ira.weiny-ral2JQCrhuEAvxtiuMwx3w
2014-11-13 19:54 ` [RFC PATCH 16/16] ib/mad: Implement Intel Omni-Path Architecture General MAD processing ira.weiny-ral2JQCrhuEAvxtiuMwx3w
2014-11-18 22:16 ` [RFC PATCH 00/16] ib_mad: Add support for Intel Omni-Path Architecture (OPA) " Or Gerlitz
[not found] ` <CAJ3xEMhtm99dRdcEvhK9s961mDr7YSU3pkv-WK=sESKe_K4kYw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-11-25 21:52 ` Weiny, Ira
[not found] ` <2807E5FD2F6FDA4886F6618EAC48510E0CBC6B23-8k97q/ur5Z2krb+BlOpmy7fspsVTdybXVpNB7YpNyf8@public.gmane.org>
2014-11-27 10:02 ` Or Gerlitz
[not found] ` <5476F6BB.1020200-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2014-12-01 22:18 ` Weiny, Ira
2014-11-25 23:16 ` Hal Rosenstock
[not found] ` <54750DCF.90308-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
2014-12-01 22:33 ` Weiny, Ira
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