From: Jason Gunthorpe <jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
To: Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public•gmane.org>
Cc: Paolo Abeni <pabeni-H+wXaHxf7aLQT0dZR+AlfA@public•gmane.org>,
linux-rdma-u79uwXL29TY76Z2rM5mHXA@public•gmane.org,
Sean Hefty <sean.hefty-ral2JQCrhuEAvxtiuMwx3w@public•gmane.org>,
Hal Rosenstock
<hal.rosenstock-Re5JQEeQqe8AvxtiuMwx3w@public•gmane.org>,
netdev-u79uwXL29TY76Z2rM5mHXA@public•gmane.org
Subject: Re: [PATCH] IB/ipoib: move back the IB LL address into the hard header
Date: Tue, 11 Oct 2016 12:30:19 -0600 [thread overview]
Message-ID: <20161011183019.GC20253@obsidianresearch.com> (raw)
In-Reply-To: <073e0007-a43b-134d-ba7e-b290304be585-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
On Tue, Oct 11, 2016 at 02:17:51PM -0400, Doug Ledford wrote:
> Well, not exactly. Even if we put 65520 into the scripts, the kernel
> will silently drop it down to 65504. It actually won't require anyone
> change anything, they just won't get the full value. I experimented
> with this in the past for other reasons and an overly large MTU setting
> just resulted in the max MTU. I don't know if that's changed, but if it
> still works that way, this is much less of an issue than it might
> otherwise be.
So it is just docs and relying on PMTU? That is not as bad..
Still would be nice to avoid if at all possible..
Jason
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next prev parent reply other threads:[~2016-10-11 18:30 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-11 17:15 [PATCH] IB/ipoib: move back the IB LL address into the hard header Paolo Abeni
[not found] ` <1dbd83dfe7f435eecc5bc460e901b47758280f30.1476206016.git.pabeni-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2016-10-11 17:32 ` Jason Gunthorpe
2016-10-11 17:37 ` Paolo Abeni
[not found] ` <1476207452.448.2.camel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2016-10-11 17:42 ` Jason Gunthorpe
[not found] ` <20161011174224.GA17319-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2016-10-11 17:52 ` Paolo Abeni
2016-10-11 17:41 ` Doug Ledford
2016-10-11 18:01 ` Jason Gunthorpe
2016-10-11 18:10 ` Paolo Abeni
[not found] ` <1476209407.448.9.camel-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2016-10-11 18:17 ` Doug Ledford
[not found] ` <073e0007-a43b-134d-ba7e-b290304be585-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2016-10-11 18:30 ` Jason Gunthorpe [this message]
[not found] ` <20161011183019.GC20253-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2016-10-11 18:50 ` Doug Ledford
2016-10-12 18:21 ` Doug Ledford
2016-10-11 18:27 ` Jason Gunthorpe
2016-10-13 14:24 ` David Miller
[not found] ` <20161013.102432.1450901395774429343.davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>
2016-10-13 14:35 ` Doug Ledford
2016-10-13 14:43 ` [PATCH] IB/ipoib: move back the IB LL address into the hard header,Re: " David Miller
[not found] ` <20161013.104314.1842951254979604965.davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>
2016-10-13 15:20 ` Doug Ledford
2016-10-13 15:57 ` [PATCH] IB/ipoib: move back the IB LL address into the hard header,Re: [PATCH] IB/ipoib: move back the IB LL address into the hard header,Re: " David Miller
2016-10-13 15:17 ` Paolo Abeni
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