Merge branch 'bnx2x-disable-GSO-on-too-large-packets'

Daniel Axtens says:

====================
bnx2x: disable GSO on too-large packets

We observed a case where a packet received on an ibmveth device had a
GSO size of around 10kB. This was forwarded by Open vSwitch to a bnx2x
device, where it caused a firmware assert. This is described in detail
at [0].

Ultimately we want a fix in the core, but that is very tricky to
backport. So for now, just stop the bnx2x driver from crashing.

When net-next re-opens I will send the fix to the core and a revert
for this.

v4 changes:
  - fix compilation error with EXPORTs (patch 1)
  - only do slow test if gso_size is greater than 9000 bytes (patch 2)

Thanks,
Daniel

[0]: https://patchwork.ozlabs.org/patch/859410/
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

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