[Intel-wired-lan] [PATCH v4 iwl-net] i40e: Prevent setting MTU if greater than MFS
Erwan Velu
e.velu at criteo.com
Thu Mar 14 18:04:17 UTC 2024
Le 14/03/2024 à 18:55, Brett Creeley a écrit :
> [...]
> AFAIK there is no API for a user to change the max_mtu, so the only way
> the device's MFS would need to change is if it's done during
> initialization time, which should be done before netdev registration
> anyway.
Sorry Brett, I was probably unclear and please note that I'm not a
network developer, just a user that faced a bug.
My initial though was to check the mfs size in i40e_change_mtu() and if
mfs is too small, then let's increase it.
Maybe just resetting it at init time to the largest value (which seems
to be the default fw behavior) is a best approach.
I'd love to ear from Intel dev that knows this driver/cards/fw better on
what's the best approach here.
Erwan,
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