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Re: [Xen-devel] [PATCH] netback: allow arbitrary mtu size until frontend connects



On Mon, Feb 07, Jan Beulich wrote:

> >>> On 06.02.11 at 14:42, Olaf Hering <olaf@xxxxxxxxx> wrote:
> > Allow arbitrary mtu size until the frontend is connected.  Once the
> > connection is established, adjust mtu by checking if the backend
> > supports the 'feature-sg'.  If the backend does support it, keep the
> > current mtu. Otherwise set it to the default value, which is 1500.
> > 
> > This helps the vif-bridge hotplug script to set the mtu size to 9000
> > while bringing up the guest.
> 
> Isn't this functionally the same as
> http://xenbits.xen.org/XCP/linux-2.6.32.pq.hg?file/043b76e4943c/xen-netback-Allow-setting-of-large-MTU-before-rings.patch
> or its pv-ops parent 
> https://git.kernel.org/?p=linux/kernel/git/jeremy/xen.git;a=commitdiff;h=bee2eec2355c4bf4e149a426d5e30527162de566
> (in which case it would seem preferable to pull in that change)?

Either approach is ok.

Could one of the changes be backported and applied to the 2.6.18.hg tree?

Olaf

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