Re: Additional Information for Ethernet

[Spencer Ku (古世瑜) <Spencer.Ku@xxxxxxxxxxxx>]

> -----Original Message-----
> From: Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx>
> Sent: Friday, December 10, 2021 1:24 AM
> To: Spencer Ku (古世瑜) <Spencer.Ku@xxxxxxxxxxxx>
> Cc: systemd-devel@xxxxxxxxxxxxxxxxxxxxx; Litzung Chen (陳利琮)
> <Litzung.Chen@xxxxxxxxxxxx>; Nan Zhou <nanzhou@xxxxxxxxxx>
> Subject: Re:  Additional Information for Ethernet
> 
> On Thu, Dec 09, 2021 at 03:13:42AM +0000, Spencer Ku (古世瑜) wrote:
> > Hi All,
> > We are developing the redfish of openbmc, and want to expose some
> Ethernet information through the redfish interface, like packet count, drop
> count. My goal is to calculate the bandwidth / drop package rate of the
> Ethernet. We can get those counts from Ethernet driver
> (/sys/class/net/{Ethernet_Name}/statistics), but as far as I know, there is no
> suitable d-bus to read those metrics.
> >
> >
> >
> > My question is that: is it possible to create the new D-bus properties ( like
> under the /org/freedesktop/{network}/network/{Ethernet_Name}), then sync
> the counts to that D-Bus?
> 
> Why not just use netlink for this?  I think it provides this information already
> as part of networking stats.  Have you looked into that?
> 
I'm not quite familiar with netlink, let me check on that.
Thanks for your reply!

> thanks,
> 
> greg k-h