[ovs-discuss] DPDK OVS and vhost-user: guest host cannot received packets from local host

Mauricio Vasquez mauricio.vasquez at polito.it
Sat Sep 24 14:54:20 UTC 2016


Hello Cheng,

It is an issue present in OVS 2.5.0, you can find details about how to 
solve it in:

http://openvswitch.org/pipermail/discuss/2016-April/020992.html

http://openvswitch.org/pipermail/dev/2016-March/068282.html

Mauricio Vásquez.


On 09/23/2016 01:25 PM, Cheng Chi wrote:
>
> Hi,
>
> I am using ovs 2.5.0 + dpdk2.2.0 + libvirt1.2.18.1(qemu 2.3.1)
>
> I have added 1 physical dpdk port and 1 vhostuser ports.
>
> *Following is my bridge:*
>
>     Bridge "br0"
>
>         Port "dpdk0"
>
>             Interface "dpdk0"
>
>                 type: dpdk
>
>         Port "vhost-user1"
>
>             Interface "vhost-user1"
>
>                 type: dpdkvhostuser
>
>         Port "br0"
>
>             Interface "br0"
>
>                 type: internal
>
> **
>
> *the libvirt related setting as below*
>
> <domain type='kvm'>
>
>>
> <memory unit='KiB'>10485760</memory>
>
>   <currentMemory unit='KiB'>10485760</currentMemory>
>
>   <memoryBacking>
>
>     <hugepages>
>
>       <page size='1048576' unit='KiB' nodeset='0'/>
>
>     </hugepages>
>
>   </memoryBacking>
>
>>
>   <cpu mode='host-passthrough'>
>
>     <topology sockets='1' cores='8' threads='2'/>
>
>     <numa>
>
>       <cell id='0' cpus='0-1' memory='10485760' unit='KiB' 
> memAccess='shared'/>
>
>     </numa>
>
>   </cpu>
>
>>
>    <interface type='vhostuser'>
>
>       <mac address='52:00:00:00:00:01'/>
>
>       <source type='unix' 
> path='/usr/localvar/run/openvswitch/vhost-user1' mode='client'/>
>
>       <model type='virtio'/>
>
>       <address type='pci' domain='0x0000' bus='0x00' slot='0x03' 
> function='0x0'/>
>
> </interface>
>
>>
> /domain>
>
> However, after I started the guest host, I found the guest host can 
> send packets to local host but cannot  received packets from local host.
>
> #ovs-ofctl dump-ports br0
>
> OFPST_PORT reply (xid=0x2): 3 ports
>
>   port LOCAL: rx pkts=32, bytes=1536, drop=0, errs=0, frame=0, over=0, 
> crc=0
>
>            tx pkts=13974, bytes=6983918, drop=882, errs=0, coll=0
>
>   port  1: rx pkts=15478, bytes=7120292, drop=0, errs=0, frame=?, 
> over=?, crc=?
>
>            tx pkts=44, bytes=2928, drop=0, errs=0, coll=?
>
>   port  2: rx pkts=37, bytes=1866, drop=?, errs=0, frame=?, over=?, crc=?
>
> tx pkts=0, bytes=0, drop=13969, errs=?, coll=?
>
> Observe the vhost-user1 port (port 2), we can see all the Tx packets 
> has been dropped
>
> The related syslog as below , it seems that the Tx queue mapping 
> failed. Are there some wrong with my POC?
>
> 2016-09-23T18:48:14.693571+08:00 linux-yjaf ovs-vswitchd[10637]: 
> VHOST_CONFIG: new virtio connection is 35
>
> 2016-09-23T18:48:14.693852+08:00 linux-yjaf ovs-vswitchd[10637]: 
> VHOST_CONFIG: new device, handle is 0
>
> 2016-09-23T18:48:16.728354+08:00 linux-yjaf ovs-vswitchd[10637]: 
> VHOST_CONFIG: read message VHOST_USER_SET_OWNER
>
> 2016-09-23T18:48:16.728645+08:00 linux-yjaf ovs-vswitchd[10637]: 
> VHOST_CONFIG: read message VHOST_USER_GET_FEATURES
>
> 2016-09-23T18:48:16.728766+08:00 linux-yjaf ovs-vswitchd[10637]: 
> VHOST_CONFIG: read message VHOST_USER_SET_VRING_CALL
>
> 2016-09-23T18:48:16.728880+08:00 linux-yjaf ovs-vswitchd[10637]: 
> VHOST_CONFIG: vring call idx:0 file:46
>
> 2016-09-23T18:48:16.728992+08:00 linux-yjaf ovs-vswitchd[10637]: 
> VHOST_CONFIG: read message VHOST_USER_SET_VRING_CALL
>
> 2016-09-23T18:48:16.729103+08:00 linux-yjaf ovs-vswitchd[10637]: 
> VHOST_CONFIG: vring call idx:1 file:54
>
> 2016-09-23T18:48:24.112148+08:00 linux-yjaf ovs-vswitchd[10637]: 
> VHOST_CONFIG: read message VHOST_USER_SET_VRING_CALL
>
> 2016-09-23T18:48:24.113589+08:00 linux-yjaf ovs-vswitchd[10637]: 
> VHOST_CONFIG: vring call idx:0 file:55
>
> 2016-09-23T18:48:24.114578+08:00 linux-yjaf ovs-vswitchd[10637]: 
> VHOST_CONFIG: read message VHOST_USER_SET_VRING_CALL
>
> 2016-09-23T18:48:24.114733+08:00 linux-yjaf ovs-vswitchd[10637]: 
> VHOST_CONFIG: vring call idx:1 file:46
>
> 2016-09-23T18:48:24.114914+08:00 linux-yjaf ovs-vswitchd[10637]: 
> VHOST_CONFIG: read message VHOST_USER_SET_FEATURES
>
> 2016-09-23T18:48:24.115061+08:00 linux-yjaf ovs-vswitchd[10637]: 
> VHOST_CONFIG: read message VHOST_USER_SET_MEM_TABLE
>
> 2016-09-23T18:48:24.115176+08:00 linux-yjaf ovs-vswitchd[10637]: 
> VHOST_CONFIG: mapped region 0 fd:54 to:0x2aaac0000000 sz:0x280000000 
> off:0xc0000000 align:0x40000000
>
> 2016-09-23T18:48:24.115289+08:00 linux-yjaf ovs-vswitchd[10637]: 
> VHOST_CONFIG: mapped region 1 fd:56 to:0x2aad40000000 sz:0x40000000 
> off:0x0 align:0x40000000
>
> 2016-09-23T18:48:24.115402+08:00 linux-yjaf ovs-vswitchd[10637]: 
> VHOST_CONFIG: mapped region 2 fd:57 to:0x2aad80000000 sz:0xc0000000 
> off:0xc0000 align:0x40000000
>
> 2016-09-23T18:48:24.115512+08:00 linux-yjaf ovs-vswitchd[10637]: 
> VHOST_CONFIG: read message VHOST_USER_SET_VRING_NUM
>
> 2016-09-23T18:48:24.115637+08:00 linux-yjaf ovs-vswitchd[10637]: 
> VHOST_CONFIG: read message VHOST_USER_SET_VRING_BASE
>
> 2016-09-23T18:48:24.115755+08:00 linux-yjaf ovs-vswitchd[10637]: 
> VHOST_CONFIG: read message VHOST_USER_SET_VRING_ADDR
>
> 2016-09-23T18:48:24.115870+08:00 linux-yjaf ovs-vswitchd[10637]: 
> VHOST_CONFIG: read message VHOST_USER_SET_VRING_KICK
>
> 2016-09-23T18:48:24.115979+08:00 linux-yjaf ovs-vswitchd[10637]: 
> VHOST_CONFIG: vring kick idx:0 file:58
>
> 2016-09-23T18:48:24.116104+08:00 linux-yjaf ovs-vswitchd[10637]: 
> VHOST_CONFIG: virtio is not ready for processing.
>
> 2016-09-23T18:48:24.116214+08:00 linux-yjaf ovs-vswitchd[10637]: 
> VHOST_CONFIG: read message VHOST_USER_SET_VRING_NUM
>
> 2016-09-23T18:48:24.116324+08:00 linux-yjaf ovs-vswitchd[10637]: 
> VHOST_CONFIG: read message VHOST_USER_SET_VRING_BASE
>
> 2016-09-23T18:48:24.116431+08:00 linux-yjaf ovs-vswitchd[10637]: 
> VHOST_CONFIG: read message VHOST_USER_SET_VRING_ADDR
>
> 2016-09-23T18:48:24.116537+08:00 linux-yjaf ovs-vswitchd[10637]: 
> VHOST_CONFIG: read message VHOST_USER_SET_VRING_KICK
>
> 2016-09-23T18:48:24.116647+08:00 linux-yjaf ovs-vswitchd[10637]: 
> VHOST_CONFIG: vring kick idx:1 file:59
>
> 2016-09-23T18:48:24.116758+08:00 linux-yjaf ovs-vswitchd[10637]: 
> VHOST_CONFIG: virtio is now ready for processing.
>
> 2016-09-23T18:48:24.116867+08:00 linux-yjaf ovs-vswitchd[10637]: 
> ovs|00061|dpdk(vhost_thread1)|DBG|TX queue mapping for 
> /usr/local/myOvs/var/run/openvswitch/vhost-user1
>
> 2016-09-23T18:48:24.116974+08:00 linux-yjaf ovs-vswitchd[10637]: 
> ovs|00062|dpdk(vhost_thread1)|DBG| 0 --> -1
>
> 2016-09-23T18:48:24.117082+08:00 linux-yjaf ovs-vswitchd[10637]: 
> ovs|00063|dpdk(vhost_thread1)|INFO|vHost Device 
> '/usr/local/var/run/openvswitch/vhost-user1' 0 has been added
>
> BR/Cheng
>
>
>
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