I'd start by looking at some commits that add qdiscs, such as:
commit 677d9158fc0aa16f875198d83c7bd8f87238aed5
Author: Jonathan Vestin <jonav...@kau.se>
Date: Wed Mar 18 17:13:01 2015 +0100
netdev-linux: Support for SFQ, FQ_CoDel and CoDel qdiscs.
This patch adds support for SFQ, CoDel and FQ_CoDel classless qdiscs to
Open vSwitch. It also removes the requirement for a QoS to have at least one
Queue (as this makes no sense when using classless qdiscs). I have also not
implemented class_{get,set,delete,get_stats,dump_stats} because they are meant
for qdiscs with classes.
Signed-off-by: Jonathan Vestin <jonav...@kau.se>
[b...@nicira.com mostly applied stylistic changes]
Signed-off-by: Ben Pfaff <b...@nicira.com>
On Sun, Jul 24, 2016 at 07:47:28PM +0000, fatt 3issam wrote:
> Could you please guide me on how to start doing that?
> Best regards.
>
> > Date: Sun, 24 Jul 2016 11:47:03 -0700
> > From: b...@ovn.org
> > To: fat...@hotmail.com
> > CC: discuss@openvswitch.org
> > Subject: Re: [ovs-discuss] ifconfig counters issue!
> >
> > You could add support for your qdisc to OVS, including support for queue
> > statistics.
> >
> > On Sun, Jul 24, 2016 at 06:19:37PM +0000, fatt 3issam wrote:
> > > I get what you said but as I mentioned my goal is to get those stats with
> > > OpenFlow so it's not a matter of seeing the packets being dropped it's
> > > about the counter itself that registers them.when using tc -s I can
> > > indeed see them but only the tx I need both tx and rx + when I request
> > > port stats using OpenFlow the counters are always 0 like with ifconfig!
> > > is there any other tool that can make packets drop on veth interfaces or
> > > is there any possible way that I can register the correct port stats?
> > > Best regards.---------------------------------
> > >
> > > > Date: Sun, 24 Jul 2016 11:05:27 -0700
> > > > From: b...@ovn.org
> > > > To: fat...@hotmail.com
> > > > CC: discuss@openvswitch.org
> > > > Subject: Re: [ovs-discuss] ifconfig counters issue!
> > > >
> > > > On Sun, Jul 24, 2016 at 10:29:43AM +0000, fatt 3issam wrote:
> > > > > I'm trying to test poor connexion networks. So in a simple linear
> > > > > topology (host1 ---- switch1 ------ (s2-eth2)switch2(s2-eth1) -----
> > > > > host2) I created packet loss (50%) in the interface s2-eth2 using the
> > > > > tc command, I pinged from host1 to host2 and indeed the ping results
> > > > > are around the 50% loss. Now the problem is when I try to prove these
> > > > > results with ifconfig I'm seeing that the rx/tx drop counts are
> > > > > always 0 (the same goes for the errors/overruns/collisions counters
> > > > > with their specific tests of course)!!!
> > > > > P.S: I also tried to jam the network by creating some background
> > > > > trafic with iperf tool but still seeing 0s!
> > > > > How can I affect ifconfig counters or how to actually make veth
> > > > > interfaces feel what's going on! because I need to have those numbers
> > > > > registred on the port's stats to get them from OpenFlow after!!
> > > > > I hope that this issue is clear and thanks in advance.Best regards.
> > > > >
> > > >
> > > > This doesn't seem to have anything to do with OVS.
> > > >
> > > > I believe that when TC drops a packet, the drops will be accounted by
> > > > the packet scheduler rather than by the interface, so you should be able
> > > > to use some "tc -s" command to view drops.
> > >
>
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