On 11/11/2021 12:01 AM, Mohammad Heib wrote:
Hi Gregory,
Thank you for the quick response :),
i have already implemented a basic TC Netlink monitor that is based on
nlmon code and it partially works
with some missing pieces, and waiting to hear from you if that ok to rely
on nlmon code.
Thanks,
Mohammad
Hi Mohammed,
The nlmon tool should be reliable for what it decodes. It's just that
it might not decode everything you want to see. But if it's helping
out then I think you can trust it.
- Greg
On Wed, Nov 10, 2021 at 12:15 AM Gregory Rose <[email protected]> wrote:
On 11/9/2021 8:05 AM, Mohammad Heib wrote:
hi folks,
i was looking for a way to monitor OVS TC Netlink messages that OVS sends
to TC when HW offloads are on (mostly for testing HWOL over non-supported
HW offload system ).
as i understood, those Netlink's messages will be sent back from the
kernel
to TC Netlink multicast group after the TC subsystem is finished
processing
those requests, and the userspace process can capture them by listing to
the appropriate group.
unfortunately, i didn't find any tool that give me the ability to capture
and parse (print) those TC Netlink messages.
so I started to implement my own tool but after a few more
investigations I
found that nlmon already implement similar behavior for capturing Netlink
Link changes messages.
so I was wondering if:
1. I can convert nlmon code to be more generic and easier to add and
monitor new Netlink groups?
2. can I add Netlink TC messages monitoring implementation to nlmon?
if the answer to 2 was yes :) ,
I have some dependencies that need to be included from linux/pkt_cls.h
which is a kernel header file and not sure if I can include it in nlmon ?
is that possible to include this file in nlmon.c? or is it ok to copy
those
dependencies to a local file (maybe nlmon.h) especially that most of
those
dependencies are enums and defines (e.g TCA_*/TCA_FLOWER_*)?.
Hi Mohammed,
I was looking into TC flower Netlink monitoring myself but haven't
had a real chance to dig deeper into it. However, the nlmon tool you
mentioned looks very interesting. I'll check it out and if I see an
answer to question #2 I'll get back to you.
Thanks,
- Greg
_______________________________________________
discuss mailing list
[email protected]
https://mail.openvswitch.org/mailman/listinfo/ovs-discuss
