Re: [PATCH v3] IB/ipoib: move back IB LL address into the hard header

On Fri, 2016-10-14 at 13:23 +0300, Or Gerlitz wrote:

Paolo,

Is this fix backportable to any kernel since the breakage? 

yes, AFAIK this is beck-portable.

AFAIR,
Roland mentioned
that a 2nd change introduced in 4.7-rc1 changed things a bit more such
that the fix
he had in his head didn't apply any more.

If you refer to shrinking both IPoIB and gso control buffer, as proposed
by Roland in:

http://marc.info/?l=linux-kernel&m=146787279825501&w=2

that will not work, since the gso control buffer is grown a bit since
the first time the bug was detected.

This patch does not have that sort of issue.

I am still travelling after netdev and would like to put an eye on the
patch and also see that @mellanox.com someone

Not sure if that helps, but a 3rd party has already confirmed privately
that this patch fixes the bug for them.

Paolo