i40e/i40evf: Ignore a driver perceived Tx hang if the number of desc pending < 4
We are seeing situations where the driver sees a hang with less than 4 desc pending, if the driver chooses to ignore it the queue progresses forward and the stack never experiences a real hang. With this patch we will log a stat when this situation happens "tx_sluggish" will increment and we can see some more details at a higher debug level. Other than that we will ignore this particular case of Tx hang. Change-ID: I7d1d1666d990e2b12f4f6bed0d17d22e1b6410d5 Signed-off-by: NAnjali Singhai Jain <anjali.singhai@intel.com> Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>
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