Hi all,
I was revising some of my old work for UML to prepare it for submission
and I noticed that skb->xmit_more does not seem to be set any more.
I traced the issue as far as net/sched/sched_generic.c
try_bulk_dequeue_skb() is never invoked (the drivers I am working on are
dql enabled so that is not the problem).
More interestingly, if I put a breakpoint and debug output into
dequeue_skb() around line 147 - right before the bulk: tag that skb
there is always NULL. ???
Similarly, debug in pfifo_fast_dequeue shows only NULLs being dequeued.
Again - ???
First and foremost, I apologize for the silly question, but how can this
work at all? I see the skbs showing up at the driver level, why are
NULLs being returned at qdisc dequeue and where do the skbs at the
driver level come from?
Second, where should I look to fix it?
A.
