net: systemport: Add software counters to track reallocations
When inserting the TSB, keep track of how many times we had to do it and if there was a failure in doing so, this helps profile the driver for possibly incorrect headroom settings. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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