net: bcmgenet: improve TX timeout
Dump useful ring statistics along with interrupt status, software maintained pointers and hardware registers to help troubleshoot TX queue stalls. When a timeout occurs, disable TX NAPI for the rings, dump their states while interrupts are disabled, re-enable interrupts, NAPI and queue flow control to help with the recovery. Signed-off-by: NFlorian Fainelli <f.fainelli@gmail.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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