K 10
svn:author
V 6
sbruno
K 8
svn:date
V 27
2015-04-16T06:23:58.486203Z
K 7
svn:log
V 784
Get 82574 tx queues working reliably via a few bits of stolen errata and
a few bits of stolen igb(4) code.

- Bind interrupts to specific CPUs (stolen from igb).
- Don't ever let em_mq_start() have a negative value for its tx queue.
- Allow the interrupt for the link status to be shareable.
- Setup 2nd queue TXDCTL bits to enable it fully, without this, it times out.
  Values derived from linux e1000e driver, netdev.c.  Committed due to apparent
  erratum.
- When configuring RSS, use a modulo of the num_rx_queues, instead of magic number 2
- Add premptive comment when configuring RXDCTL indicating why the 2nd queue is not
  being configured here.
- Revert enhanced queue status handling, from svn revision 281045 as it fails to handle
  watchdog events at all in this driver.

END