[ovs-discuss] OVS-DPDK - packets received at dpdk interface but not forwarded to VXLAN port

Chandran, Sugesh sugesh.chandran at intel.com
Wed Jun 7 10:32:21 UTC 2017



Regards
_Sugesh


> -----Original Message-----
> From: Avi Cohen (A) [mailto:avi.cohen at huawei.com]
> Sent: Wednesday, June 7, 2017 11:27 AM
> To: Chandran, Sugesh <sugesh.chandran at intel.com>; ovs-
> discuss at openvswitch.org
> Subject: RE: [ovs-discuss] OVS-DPDK - packets received at dpdk interface but
> not forwarded to VXLAN port
> 
> Sugesh
> Dpctl dump-dps - show nothing - I think this make sense because we are in
[Sugesh] did U try ovs-appctl dpctl/dump-flows netdev at ovs-netdev?
Can you have a look at
Ovs-appctl dpctl/show 
Ovs-appctl dpctl/dump-flows netdev at ovs-netdev

> user-space only Ofctl dump-flows - show 1 NORMAL entry for both bridges
> Bset Regards avi
> 
> -----Original Message-----
> From: Chandran, Sugesh [mailto:sugesh.chandran at intel.com]
> Sent: Wednesday, 07 June, 2017 11:59 AM
> To: Avi Cohen (A); ovs-discuss at openvswitch.org
> Subject: RE: [ovs-discuss] OVS-DPDK - packets received at dpdk interface but
> not forwarded to VXLAN port
> 
> 
> 
> Regards
> _Sugesh
> 
> 
> > -----Original Message-----
> > From: Avi Cohen (A) [mailto:avi.cohen at huawei.com]
> > Sent: Wednesday, June 7, 2017 9:26 AM
> > To: Chandran, Sugesh <sugesh.chandran at intel.com>; ovs-
> > discuss at openvswitch.org
> > Subject: RE: [ovs-discuss] OVS-DPDK - packets received at dpdk
> > interface but not forwarded to VXLAN port
> >
> > Thank you Sugesh
> > The problem is not an  arp/route  issue.
> > The problem is that Packets received in the peer dpdk  not forwarded
> > to the vxlan port for decap.
> > When I tried to investigate it - I saw that in ovs-dpdk setup the
> > outer header received at the peer dpdk interface is - for some reason
> > including vlan  2047, (on the other hand in native ovs setup the outer
> > eth header is untagged) I think that the packet is dropped there -
> > although I don't see any drops in
> > dpdk0 statistics.
> [Sugesh] Bit strange to me, I haven't seen anything as such in my setup.
> Just wondering what is your ofproto and datapath flows looks like?
> >
> > Output of vsctl show:
> >
> > utilities/ovs-vsctl show
> > 8cdae740-9eb3-4b79-ad6f-bca0652c5d54
> >     Bridge br-int
> >         fail_mode: standalone
> >         Port "vxlan0"
> >             Interface "vxlan0"
> >                 type: vxlan
> >                 options: {remote_ip="172.31.100.80"}
> >         Port "veth0"
> >             Interface "veth0"
> >         Port br-int
> >             Interface br-int
> >                 type: internal
> >     Bridge br-phy
> >         fail_mode: standalone
> >         Port "dpdk0"
> >             Interface "dpdk0"
> >                 type: dpdk
> >                 options: {dpdk-devargs="0000:00:03.0"}
> >         Port br-phy
> >             Interface br-phy
> >                 type: internal
> >
> >
> >
> > > -----Original Message-----
> > > From: Chandran, Sugesh [mailto:sugesh.chandran at intel.com]
> > > Sent: Wednesday, 07 June, 2017 11:06 AM
> > > To: Avi Cohen (A); ovs-discuss at openvswitch.org
> > > Subject: RE: [ovs-discuss] OVS-DPDK - packets received at dpdk
> > > interface but not forwarded to VXLAN port
> > >
> > >
> > >
> > > Regards
> > > _Sugesh
> > >
> > >
> > > > -----Original Message-----
> > > > From: ovs-discuss-bounces at openvswitch.org [mailto:ovs-discuss-
> > > > bounces at openvswitch.org] On Behalf Of Avi Cohen (A)
> > > > Sent: Wednesday, June 7, 2017 7:42 AM
> > > > To: ovs-discuss at openvswitch.org
> > > > Subject: [ovs-discuss] OVS-DPDK - packets received at dpdk
> > > > interface but not forwarded to VXLAN port
> > > >
> > > >
> > > >
> > > > When I  work with native OVS (no DPDK)  - the traffic is OK.
> > > > I see that with native OVS - I have NO VLAN in the outer Ethernet
> > > > header
> > .
> > > [Sugesh] I didn't understand the issue exactly..Is your traffic not
> > > forwarding at all Or Is it have wrong vlan tag.?
> > > If its issue with the traffic forwarding, it must be something to do
> > > with arp/route.
> > > Can you please have a look at datapath rules , arp and route entries
> > > in
> > ovs.??
> > > You can refer the following document for debug commands
> > >
> > > http://docs.openvswitch.org/en/latest/howto/userspace-
> > > tunneling/?highlight=tunneling
> > >
> > >
> > >
> > > > in OVS-DPDK - for some reason -   I do have VLAN 2047 - see below ###
> > > >
> > > > > -----Original Message-----
> > > > > From: Avi Cohen (A)
> > > > > Sent: Tuesday, 06 June, 2017 1:58 PM
> > > > > To: 'dpdk-ovs at lists.01.org'; 'users at dpdk.org'
> > > > > Subject: OVS-DPDK - packets received at dpdk interface but not
> > > > > forwarded to VXLAN port
> > > > >
> > > > > Hello All (I resend because the prev msg was sent as html)
> > > > >
> > > > > I have 2  OVS-DPDK installed  - with the following below
> > > > > symmetric
> > > > > configuration: see ***
> > > > >
> > > > > When I send ping from a namespace (connected to the ovs-dpdk) -
> > > > > I see that the packet is received at the peer  via the dpdk
> > > > > interface
> > > > > - BUT not sent to the vxlan port
> > > > >
> > > > > See  ###  the tcpdump of the packet (captured at the br-phy  in
> > > > > the
> > > > > peer) - the packet  looks  OK but  not sent to vxlan port  for decap.
> > > > >
> > > > > [note that in the TX direction - the behavior is OK - packet
> > > > > sent from namespace to veth0 then to vxlan encap, then to dpdk
> > > > > interface
> > > > > --> eventually the packet is received at the dpdk peer
> > > > > --> interface]
> > > > >
> > > > > Can someone see any problem with my configuration ?
> > > > >
> > > > > Best Regards
> > > > > avi
> > > > >
> > > > > ***
> > > > > utilities/ovs-vsctl show
> > > > > 8cdae740-9eb3-4b79-ad6f-bca0652c5d54
> > > > >     Bridge br-int
> > > > >         fail_mode: standalone
> > > > >         Port "vxlan0"
> > > > >             Interface "vxlan0"
> > > > >                 type: vxlan
> > > > >                 options: {remote_ip="172.31.100.80"}                // the peer has
> > > other
> > > > > ip
> > > > >         Port "veth0"
> > > > >             Interface "veth0"
> > > > >         Port br-int
> > > > >             Interface br-int
> > > > >                 type: internal
> > > > >     Bridge br-phy
> > > > >         fail_mode: standalone
> > > > >         Port "dpdk0"
> > > > >             Interface "dpdk0"
> > > > >                 type: dpdk
> > > > >                 options: {dpdk-devargs="0000:00:03.0"}
> > > > >         Port br-phy
> > > > >             Interface br-phy
> > > > >                 type: internal
> > > > >
> > > > > ###
> > > > > 10:27:15.201711 02:d7:d1:26:84:e5 (oui Unknown) >
> > > > > 02:fb:9e:ce:f2:0d (oui Unknown), ethertype 802.1Q (0x8100),
> > > > > length
> > > > > 152: vlan 2047, p 0, ethertype IPv4,
> > > > > ip-172-31-100-80.eu-central-1.compute.internal.58740 >
> > > > > ip-172-31-100-
> > > > > 44.eu-central-1.compute.internal.4789: VXLAN, flags [I] (0x08),
> > > > > vni
> > > > > 0
> > > > > 7a:fd:3c:4c:ee:d3 (oui Unknown) > d2:ea:96:e1:ef:d2 (oui
> > > > > Unknown), ethertype
> > > > > IPv4 (0x0800), length 98: 1.1.1.20 > 1.1.1.10: ICMP echo
> > > > > request, id 2235, seq 1176, length 64
> > > >
> > > > _______________________________________________
> > > > discuss mailing list
> > > > discuss at openvswitch.org
> > > > https://mail.openvswitch.org/mailman/listinfo/ovs-discuss


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