This patch fixes tx byte statistics when transmitting packets
with link down.
Previously, the counter would decrement 4 bytes for each packet that
was transmitted with link down, causing the uint64 to wrap around.
Fixes: c03fcee9ab ("ixgbe: remove CRC size from byte counters")
Reported-by: Michael Qiu <michael.qiu@intel.com>
Signed-off-by: Harry van Haaren <harry.van.haaren@intel.com>
Acked-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>