On 16.03.2016 18:14, Nikolay Borisov wrote:
On Wed, Mar 16, 2016 at 7:07 PM, Hannes Frederic Sowa
<han...@stressinduktion.org> wrote:
On 16.03.2016 16:29, Nikolay Borisov wrote:
I have stack traces which do show this sequence of events, so my
questions now are:
1. What's the difference between netdev_queue->qdisc and
netdev_queue->qdisc_sleeping. Git blaming indicates those member haves
existed even before the git history was started.
qdisc_sleeping is the qdisc you configure before the device is brought up.
It should transition during carrier up to the normal qdisc.
2. Shouldn't the netdev_queue->qdisc also be updated during
attach_one_default_qdisc?
Yes, do you have carrier up on your card?
Actually no, the interface indeed shows no carrier yet ibping to other
hosts on the infiniband network works and ibstats shows the link as
being in up state. Do you have any ideas how to debug this further?
Probably something in the driver should call netif_carrier_on if carrier
is connectivity is available. I don't have enough knowledge about IB how
carrier detection is done there.
Is this a regression, did this work for you and stopped working with a
specific kernel version?
I don't think this is a regression.
Okay, thanks.
Bye,
Hannes
