[libvirt] Support interface network stats for SR-IOV in Switchdev mode(VF representors)
Hi All, Currently libvirt does not support networks interface stats for <interface type='hostdev'>. With availability of switchdev model in linux, it is possible to capture stats for SR-IOV VFs on host using its VF representor interface on host for nics supporting switchdev model. https://github.com/torvalds/linux/blob/master/Documentation/networking/switc... I want to preapre a patch supporting this feature for hostdev and write some function like 'virHostdevSwitchdevVfRepresentorInterfaceStats' for returning stats. Should I include this function and supporting methods in src/util/virhostdev.c or should i include it in new file something like src/util/virswitchdev.c . Thanks, Jai
On Wed, Jan 31, 2018 at 05:02:59PM +0530, Jai Singh Rana wrote:
Hi All,
Currently libvirt does not support networks interface stats for <interface type='hostdev'>.
With availability of switchdev model in linux, it is possible to capture stats for SR-IOV VFs on host using its VF representor interface on host for nics supporting switchdev model.
https://github.com/torvalds/linux/blob/master/Documentation/networking/switc...
I want to preapre a patch supporting this feature for hostdev and write some function like 'virHostdevSwitchdevVfRepresentorInterfaceStats' for returning stats. Should I include this function and supporting methods in src/util/virhostdev.c or should i include it in new file something like src/util/virswitchdev.c .
It is probably best as src/util/virnetdevhostdev.c Regards, Daniel -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|
Thanks Daniel for the feedback. On Wed, Jan 31, 2018 at 5:07 PM, Daniel P. Berrangé <berrange@redhat.com> wrote:
On Wed, Jan 31, 2018 at 05:02:59PM +0530, Jai Singh Rana wrote:
Hi All,
Currently libvirt does not support networks interface stats for <interface type='hostdev'>.
With availability of switchdev model in linux, it is possible to capture stats for SR-IOV VFs on host using its VF representor interface on host for nics supporting switchdev model.
https://github.com/torvalds/linux/blob/master/Documentation/networking/switc...
I want to preapre a patch supporting this feature for hostdev and write some function like 'virHostdevSwitchdevVfRepresentorInterfaceStats' for returning stats. Should I include this function and supporting methods in src/util/virhostdev.c or should i include it in new file something like src/util/virswitchdev.c .
It is probably best as src/util/virnetdevhostdev.c
Regards, Daniel -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|
After deriving VF representor name on host based on BDF info in 'hostdev' and querying net sysfs entries, virNetDevTapInterfaceStats defined in virnetdevtap.c already serves the purpose for returning stats based on interface name. Is it ok to define a macro as follows to avoid duplicate code or shall I copy this function definition as virNetdevHostdevVFRepInterfaceStats in new file virNetdevhostdev.c to rule out any dependency on virnetdevtap. #define virNetdevHostdevVFRepInterfaceStats virNetDevTapInterfaceStats Thanks, Jai On Wed, Jan 31, 2018 at 5:20 PM, Jai Singh Rana <jai.rana@gmail.com> wrote:
Thanks Daniel for the feedback.
On Wed, Jan 31, 2018 at 5:07 PM, Daniel P. Berrangé <berrange@redhat.com> wrote:
On Wed, Jan 31, 2018 at 05:02:59PM +0530, Jai Singh Rana wrote:
Hi All,
Currently libvirt does not support networks interface stats for <interface type='hostdev'>.
With availability of switchdev model in linux, it is possible to capture stats for SR-IOV VFs on host using its VF representor interface on host for nics supporting switchdev model.
https://github.com/torvalds/linux/blob/master/Documentation/networking/switc...
I want to preapre a patch supporting this feature for hostdev and write some function like 'virHostdevSwitchdevVfRepresentorInterfaceStats' for returning stats. Should I include this function and supporting methods in src/util/virhostdev.c or should i include it in new file something like src/util/virswitchdev.c .
It is probably best as src/util/virnetdevhostdev.c
Regards, Daniel -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|
participants (2)
-
Daniel P. Berrangé -
Jai Singh Rana