Thanks for your suggestion.
However, this is what I observe:
~$ *sudo ovs-vsctl add-port br0 veth1 -- set port veth1 qos=@myqos --
--id=@myqos create qos type=linux-noop*
ac47866d-6812-47a0-a5e2-ec00cfa0e849
~$ sudo ovs-vsctl show
f96fba96-cc42-4d96-8eba-c8b4e3b4af2f
Bridge br0
Port veth1
Interface veth1
Port br0
Interface br0
type: internal
ovs_version: "2.17.1"
~$ sudo tc qdisc add dev veth1 ingress
~$ sudo tc -p -s -d qdisc show dev veth1
qdisc noqueue 0: root refcnt 2
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
qdisc ingress ffff: parent ffff:fff1 ----------------> ingress qdisc present
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
~$ sudo tcpdump -i veth1
tcpdump: verbose output suppressed, use -v[v]... for full protocol decode
listening on veth1, link-type EN10MB (Ethernet), snapshot length 262144
bytes
^C
0 packets captured
0 packets received by filter
0 packets dropped by kernel
~$ sudo tc -p -s -d qdisc show dev veth1
qdisc noqueue 0: root refcnt 2 ------------ > ingress qdisc
lost
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
~$
Regards,
RS
On Thu, Jan 11, 2024 at 5:42 PM Ilya Maximets <[email protected]> wrote:
> (trying to re-send as gmail decided to not deliver the previous email)
>
> On 1/11/24 17:38, Ilya Maximets wrote:
> > On 1/11/24 17:25, Reshma Sreekumar via discuss wrote:
> >> Hello all,
> >>
> >> An ingress qdisc configured on a port that is enslaved into an
> OpenvSwitch
> >> bridge gets automatically deleted when tcpdump is run on that port!
> >
> > OVS owns QoS configuration of ports attached to it, so it is expected.
> > If you want OVS to avoid removing qdiscs configured externally, you
> > may configure a "linux-noop" QoS class for this interface. E.g.:
> >
> > $ ovs-vsctl set port veth1 qos=@myqos -- --id=@myqos create qos
> type=linux-noop
> >
> > Best regards, Ilya Maximets.
> >
> >>
> >> *OVS version :*
> >>
> >> ovs-vsctl (Open vSwitch) 2.17.1
> >> DB Schema 8.3.0
> >> *
> >> *
> >> *OVS bridge config*
> >>
> >> Bridge br0
> >> Port br0
> >> Interface br0
> >> type: internal
> >> Port L3port
> >> Interface L3port
> >> type: internal
> >> Port veth1
> >> Interface veth1
> >>
> >> *Steps to reproduce:*
> >>
> >> 1. sudo tc qdisc add dev veth1 ingress
> >> 2. sudo tc filter add dev veth1 parent ffff: protocol all u32 match u32
> 0 0 action mirred ingress redirect dev ifb0
> >> 3. sudo tcpdump -i veth1
> >>
> >> *And by running `tcpdump`, the ingress qdisc is lost!*
> >>
> >> Thanks & Regards,
> >> Reshma Sreekumar
> >
>
>
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