[ovs-discuss] dpdk vhostuser port not working

haris tanvir haristanvir at hotmail.com
Wed Nov 25 10:40:14 UTC 2015


Thanks Ciara for reply

Yea i Assigned dpdkvhost port to a VM using libvirt. Following was the Tag i used<interface type='vhostuser'>      <source type='unix' path='/var/openvswitch/dpdkvhost0.sock' mode='client'/>      <mac address='52:54:00:3b:83:1a'/>      <model type='virtio'/>   </interface>This is what i get in a VM as a result00:07.0 Ethernet Contoller: Red Hat, Inc Virtio network deviceThis is eth0 interface inside VM.When i "tcpdump -i eth0" in a VM, i receive no packets, even though my ovs-bridge is receiving packets.
 

> From: ciara.loftus at intel.com
> To: haristanvir at hotmail.com
> CC: discuss at openvswitch.org
> Subject: RE: [ovs-discuss] dpdk vhostuser port not working
> Date: Wed, 25 Nov 2015 10:29:24 +0000
> 
> > Hi,
> > I am using ovs 2.4.0. I have added 1 physical dpdk port and 4 vhostuser ports.
> > Following is my bridge:
> >     Bridge "br0"
> >         Port "dpdkvhost3"
> >             Interface "dpdkvhost3"
> >                 type: dpdkvhostuser
> >         Port "dpdk0"
> >             Interface "dpdk0"
> >                 type: dpdk
> >         Port "br0"
> >             Interface "br0"
> >                 type: internal
> >         Port "dpdkvhost1"
> >             Interface "dpdkvhost1"
> >                 type: dpdkvhostuser
> >         Port "dpdkvhost0"
> >             Interface "dpdkvhost0"
> >                 type: dpdkvhostuser
> > However, the traffic is only received by the physcal ports and NOT by
> > dpdkvhostuser ports. As you can see below that there are no Rx packets on
> > any port other than port1(physical port)
> >   port  4: rx pkts=0, bytes=?, drop=?, errs=?, frame=?, over=?, crc=?
> >            tx pkts=0, bytes=?, drop=1511, errs=?, coll=?
> >   port LOCAL: rx pkts=337, bytes=32050, drop=0, errs=0, frame=0, over=0,
> > crc=0
> >            tx pkts=5856, bytes=379808, drop=281, errs=0, coll=0
> >   port  1: rx pkts=7419, bytes=505712, drop=0, errs=0, frame=0, over=0, crc=0
> >            tx pkts=336, bytes=33604, drop=0, errs=0, coll=0
> >   port  2: rx pkts=0, bytes=?, drop=?, errs=?, frame=?, over=?, crc=?
> >            tx pkts=0, bytes=?, drop=6944, errs=?, coll=?
> >   port  3: rx pkts=0, bytes=?, drop=?, errs=?, frame=?, over=?, crc=?
> >            tx pkts=0, bytes=?, drop=4604, errs=?, coll=?
> > 
> > Following is the only flow in my bridge:
> > NXST_FLOW reply (xid=0x4):
> >  cookie=0x0, duration=8763.150s, table=0, n_packets=1969, n_bytes=127366,
> > idle_age=14, actions=FLOOD
> > 
> > 
> > Does anyone know why I am not receiving any traffic on other ports?
> 
> Have you brought up VMs with vhost-user ports successfully? dpdkvhost receive function will not succeed until a VM with the associated socket is detected.
> 
> Launch QEMU with the following (repeat for each dpdkvhostuser port):
> -chardev socket,id=char1,path=/usr/local/var/run/openvswitch/dpdkvhost0
> -netdev type=vhost-user,id=mynet1,chardev=char1,vhostforce
> -device virtio-net-pci,mac=00:00:00:00:00:01,netdev=mynet1
> 
> Please see INSTALL.DPDK.md for further instructions.
> 
> If you have already gotten this far, have you seen any errors? You can enable RTE_LIBRTE_VHOST_DEBUG=y in DPDK to get some more clues.
> 
> Thanks,
> Ciara
> 
> > 
> > Regards
> > Haris Tanvir
> > 
> > 
> > 
> > 
> > 
 		 	   		  
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