From: Jason Gunthorpe <jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
To: "Jeff Squyres (jsquyres)"
<jsquyres-FYB4Gu1CFyUAvxtiuMwx3w@public.gmane.org>
Cc: Steve Wise
<swise-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>,
"Hefty,
Sean" <sean.hefty-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
Roland Dreier <roland-BHEL68pLQRGGvPXPguhicg@public.gmane.org>,
"linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Subject: Re: [PATCH V2] libibverbs: Allow arbitrary int values for MTU
Date: Thu, 18 Jul 2013 10:50:03 -0600 [thread overview]
Message-ID: <20130718165003.GB9237@obsidianresearch.com> (raw)
In-Reply-To: <EF66BBEB19BADC41AC8CCF5F684F07FC4F727D11-nsZYYkk5h5QQ2GdVW7+PtKBKnGwkPULj@public.gmane.org>
On Thu, Jul 18, 2013 at 02:32:05AM +0000, Jeff Squyres (jsquyres) wrote:
> On Jul 17, 2013, at 5:44 PM, Steve Wise <swise-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org> wrote:
>
> > The iwarp drivers just report the nearest mtu enum. Apps don't need it for iwarp like they do for ib.
> For RC, it doesn't matter much. So the fact that RoCE and iWARP lie
> about their MTU isn't a huge deal. It's wrong, but it doesn't
> matter much.
>
> We need it for UD for our upcoming device, however, because the MTU
> is the only way to get the max message size.
.. and UD is the least abstracted transport, so existing apps won't
support Jeff's new NIC anyhow, MTU is the least of their problems.
Existing apps with existing transports see the same old values.
Jason
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next prev parent reply other threads:[~2013-07-18 16:50 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-02 12:31 [PATCH V2] libibverbs: Allow arbitrary int values for MTU Jeff Squyres
[not found] ` <1372768306-6786-1-git-send-email-jsquyres-FYB4Gu1CFyUAvxtiuMwx3w@public.gmane.org>
2013-07-04 0:36 ` Jeff Squyres (jsquyres)
2013-07-05 19:11 ` Roland Dreier
[not found] ` <CAL1RGDVU9otyMtoit1PJR5JkVy4XvU=4xjL1rN1QB7pq0rVcxA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-07-08 16:26 ` Jeff Squyres (jsquyres)
[not found] ` <EF66BBEB19BADC41AC8CCF5F684F07FC4F6F31A6-nsZYYkk5h5QQ2GdVW7+PtKBKnGwkPULj@public.gmane.org>
2013-07-08 17:19 ` Roland Dreier
[not found] ` <CAL1RGDU+4CSJyF0TAfAv-YYcjA4FG+XNeg5pGCHPeW5iqhvwpA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-07-08 17:26 ` Jason Gunthorpe
[not found] ` <20130708172621.GA3852-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2013-07-10 12:14 ` Jeff Squyres (jsquyres)
[not found] ` <EF66BBEB19BADC41AC8CCF5F684F07FC4F70BF83-nsZYYkk5h5QQ2GdVW7+PtKBKnGwkPULj@public.gmane.org>
2013-07-15 14:20 ` Jeff Squyres (jsquyres)
[not found] ` <EF66BBEB19BADC41AC8CCF5F684F07FC4F71CB0F-nsZYYkk5h5QQ2GdVW7+PtKBKnGwkPULj@public.gmane.org>
2013-07-30 16:44 ` Christoph Lameter
[not found] ` <0000014030779fed-e7bdfc9a-6714-4473-b093-4b247ab940b6-000000-p/GC64/jrecnJqMo6gzdpkEOCMrvLtNR@public.gmane.org>
2013-07-30 17:21 ` Jeff Squyres (jsquyres)
[not found] ` <EF66BBEB19BADC41AC8CCF5F684F07FC4F7883AD-nsZYYkk5h5QQ2GdVW7+PtKBKnGwkPULj@public.gmane.org>
2013-07-30 18:31 ` Christoph Lameter
[not found] ` <0000014030d9bc3d-2916693b-9669-4017-a724-75b51c6dc3dc-000000-p/GC64/jrecnJqMo6gzdpkEOCMrvLtNR@public.gmane.org>
2013-07-30 18:45 ` Atchley, Scott
[not found] ` <17370FDF-C64B-4D74-A848-79C1438E6283-1Heg1YXhbW8@public.gmane.org>
2013-07-30 18:47 ` Doug Ledford
2013-07-16 8:04 ` Hefty, Sean
[not found] ` <1828884A29C6694DAF28B7E6B8A82373805AAB74-P5GAC/sN6hkd3b2yrw5b5LfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2013-07-16 14:47 ` Jason Gunthorpe
[not found] ` <20130716144747.GA7304-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2013-07-16 17:11 ` Jeff Squyres (jsquyres)
[not found] ` <EF66BBEB19BADC41AC8CCF5F684F07FC4F7211E6-nsZYYkk5h5QQ2GdVW7+PtKBKnGwkPULj@public.gmane.org>
2013-07-17 0:16 ` Roland Dreier
[not found] ` <CAL1RGDWKmecLXsqphwdP9XG=4Y=65Z_ACSdRBhEqVQb6Q4LrUg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-07-17 17:57 ` Doug Ledford
[not found] ` <51E6DB11.9050906-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2013-08-05 18:48 ` Roland Dreier
[not found] ` <CAL1RGDVuuQU-NZ2o+T0_kuxPMRadGPeqzO1J9iuW=DRuFMMYfQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-08-05 19:02 ` Jason Gunthorpe
[not found] ` <20130805190238.GA14356-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2013-08-05 20:06 ` Roland Dreier
[not found] ` <CAL1RGDWPHWzAWx7XXxGGCVQQ1xHU6QDVybrttnvoqUPrzqzvWA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-08-05 22:22 ` Jason Gunthorpe
[not found] ` <20130805222250.GA4486-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2013-08-05 22:35 ` Roland Dreier
[not found] ` <CAL1RGDW5V_N62LSZa1YRG1JA1fOf+nbQwBG1xQ7yYiuF6z0fMw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-08-05 22:43 ` Jason Gunthorpe
2013-07-17 4:06 ` Hefty, Sean
[not found] ` <1828884A29C6694DAF28B7E6B8A82373805AECC0-P5GAC/sN6hkd3b2yrw5b5LfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2013-07-17 18:12 ` Jeff Squyres (jsquyres)
[not found] ` <EF66BBEB19BADC41AC8CCF5F684F07FC4F725B8C-nsZYYkk5h5QQ2GdVW7+PtKBKnGwkPULj@public.gmane.org>
2013-07-17 21:41 ` Hefty, Sean
[not found] ` <1828884A29C6694DAF28B7E6B8A82373805B941D-P5GAC/sN6hkd3b2yrw5b5LfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2013-07-17 21:44 ` Steve Wise
[not found] ` <51E71023.2060006-7bPotxP6k4+P2YhJcF5u+vpXobYPEAuW@public.gmane.org>
2013-07-18 2:32 ` Jeff Squyres (jsquyres)
[not found] ` <EF66BBEB19BADC41AC8CCF5F684F07FC4F727D11-nsZYYkk5h5QQ2GdVW7+PtKBKnGwkPULj@public.gmane.org>
2013-07-18 16:50 ` Jason Gunthorpe [this message]
[not found] ` <20130718165003.GB9237-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2013-07-23 13:26 ` Jeff Squyres (jsquyres)
[not found] ` <EF66BBEB19BADC41AC8CCF5F684F07FC4F749B82-nsZYYkk5h5QQ2GdVW7+PtKBKnGwkPULj@public.gmane.org>
2013-07-30 12:59 ` Jeff Squyres (jsquyres)
-- strict thread matches above, loose matches on Subject: below --
2013-06-20 14:21 Jeff Squyres
[not found] ` <1371738080-18537-1-git-send-email-jsquyres-FYB4Gu1CFyUAvxtiuMwx3w@public.gmane.org>
2013-06-20 16:34 ` Doug Ledford
[not found] ` <51C32EFC.8060202-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2013-06-20 16:42 ` Doug Ledford
2013-06-20 16:53 ` Jason Gunthorpe
[not found] ` <20130620165305.GA19800-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2013-06-20 20:31 ` Doug Ledford
[not found] ` <51C36692.7000507-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2013-06-20 21:14 ` Jason Gunthorpe
[not found] ` <20130620211454.GA2434-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2013-06-21 0:31 ` Doug Ledford
[not found] ` <51C39ECB.3040006-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2013-06-21 1:03 ` Hefty, Sean
2013-06-21 6:36 ` Jason Gunthorpe
[not found] ` <20130621063648.GA27963-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2013-06-21 17:36 ` Doug Ledford
[not found] ` <51C48F01.5030103-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2013-06-21 18:26 ` Jason Gunthorpe
[not found] ` <20130621182617.GA17700-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2013-06-21 20:57 ` Doug Ledford
[not found] ` <51C4BE25.9000501-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2013-06-21 21:20 ` Jason Gunthorpe
[not found] ` <20130621212016.GA10637-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2013-06-21 21:56 ` Hefty, Sean
2013-06-22 13:13 ` Jeff Squyres (jsquyres)
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