Re: [net-next 01/16] ixgbe: add check for netif_carrier_ok in ixgbe_xmit_frame

From: "Tantilov, Emil S" <redacted>
Date: Fri, 14 Mar 2014 20:19:38 +0000

That would work, but what if there are other callers of
ndo_start_xmit that don't have this check? Handling this in the
driver takes care of all instances.

netif_carrier_off() is supposed to stop traffic from flowing to
the device.

The qdisc layer should be honoring this property, and my
suspicion is that it is just netpoll operates in the unique
environment that doesn't.