Bug#970722: linux: Igc driver has /proc/net/dev stats issue

[Hideo Oshima <hidenosuke@hidenosuke.org>]

On Sun, 1 Nov 2020 14:54:50 +0100
Salvatore Bonaccorso <carnil@debian.org> wrote:

Thank you for your reply.

> Control: tags -1 + moreinfo
> 
> Hi,
> 
> On Tue, Sep 22, 2020 at 09:57:50PM +0900, Hideo Oshima wrote:
> > Source: linux
> > Version: 5.8.10-1
> > Severity: normal
> > 
> > Dear Maintainer,
> > 
> > *** Reporter, please consider answering these questions, where appropriate ***
> > 
> >    * What led up to the situation?
> > 
> > I use Intel I225-V Ethernet controller with igc driver.
> > But it has /proc/net/dev stats issue.
> > For example Receive and Transmit bytes, packetes are all 0.
> > 
> > $cat /proc/net/dev
> > Inter-|   Receive                                                |  Transmit
> >  face |bytes    packets errs drop fifo frame compressed multicast|bytes
> > packets errs drop fifo colls carrier compressed
> >     lo:   22642     271    0    0    0     0          0         0    22642
> > 271    0    0    0     0       0          0
> > enp9s0:       0       0    0 9648    0     0          0         0        0
> > 0    0    0    0     0       0          0
> > 
> >    * What exactly did you do (or not do) that was effective (or
> >      ineffective)?
> >    * What was the outcome of this action?
> >    * What outcome did you expect instead?
> 
> There were some refactorings in upstream up to v5.9.1 in the igc
> driver. Can you check, does the issue still persist in 5.9.1-1  as
> currently in unstable?

I tried Linux 5.9.1-1 in unstable.
Receive and Transmit bytes, packetes are not 0,
but they don't appear to be increasing enough.

$ date
2020年 11月  2日 月曜日 21:17:22 JST

$ cat /proc/net/dev
Inter-|   Receive                                                |  Transmit
 face |bytes    packets errs drop fifo frame compressed multicast|bytes    packets errs drop fifo colls carrier compressed
    lo:    4107      51    0    0    0     0          0         0     4107      51    0    0    0     0       0          0
enp6s0:       0       0    0 2082    0     0          0         0        0       0    0    0    0     0       0          0

$ date
2020年 11月  2日 月曜日 21:17:41 JST

$ cat /proc/net/dev
Inter-|   Receive                                                |  Transmit
 face |bytes    packets errs drop fifo frame compressed multicast|bytes    packets errs drop fifo colls carrier compressed
    lo:    4107      51    0    0    0     0          0         0     4107      51    0    0    0     0       0          0
enp6s0:       0       0    0 2090    0     0          0         0        0       0    0    0    0     0       0          0

Regards,
Hideo
-- 
大島秀夫(Hideo Oshima)
http://hidenosuke.org/