From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jason Gunthorpe Subject: Re: [PATCH] IB/ipoib: move back the IB LL address into the hard header Date: Tue, 11 Oct 2016 12:30:19 -0600 Message-ID: <20161011183019.GC20253@obsidianresearch.com> References: <1dbd83dfe7f435eecc5bc460e901b47758280f30.1476206016.git.pabeni@redhat.com> <20161011173216.GA16892@obsidianresearch.com> <22f61258-9bcf-0adc-f23f-79a4f1d50c6a@redhat.com> <20161011180119.GB17319@obsidianresearch.com> <1476209407.448.9.camel@redhat.com> <073e0007-a43b-134d-ba7e-b290304be585@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Paolo Abeni , linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Sean Hefty , Hal Rosenstock , netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Doug Ledford Return-path: Content-Disposition: inline In-Reply-To: <073e0007-a43b-134d-ba7e-b290304be585-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org> Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: netdev.vger.kernel.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 -- 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