r207622:
Drop driver lock before exiting from interrupt handler.
r207623:
Make sure to check whether driver is running before processing
received frames. Also check driver has valid ifp pointer before
calling msk_stop() in device_shutdown handler. While I'm here
remove unnecessary accesses to interrupt mask registers in
device_shutdown handler because driver puts the controller into
reset state.
With these changes, msk(4) now survive from heavy RX traffic(1byte
UDP frame) while reboot is in progress.
r207638:
When VLAN hardware tagging is disabled, make sure to disable VLAN
checksum offloading as well as TSO over VLAN.
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