Hello,
I followed the guide here
https://fdio-vpp.readthedocs.io/en/latest/usecases/vhost/vhost.html and get
into an issue as the VM running over libvirt (6.0.0) is not receiving the
traffic from the bare metal machine.
I'm using Ubuntu 20.04.3 LTS and I run VPP version:
vpp# show ver
vpp v22.06.1-release built by root on bv at 2023-03-02T14:39:16
The XML of the VM:
<domain type='kvm'>
<name>vm1</name>
<uuid>32dede65-6db7-4db4-9093-f6484ea40836</uuid>
<memory unit='KiB'>1048576</memory>
<currentMemory unit='KiB'>1048576</currentMemory>
<memoryBacking>
<hugepages/>
</memoryBacking>
<vcpu placement='static'>2</vcpu>
<os>
<type arch='x86_64' machine='pc-i440fx-focal'>hvm</type>
<boot dev='hd'/>
</os>
<features>
<acpi/>
<apic/>
</features>
<cpu mode='host-model' check='partial'/>
<clock offset='utc'>
<timer name='rtc' tickpolicy='catchup'/>
<timer name='pit' tickpolicy='delay'/>
<timer name='hpet' present='no'/>
</clock>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>destroy</on_crash>
<pm>
<suspend-to-mem enabled='no'/>
<suspend-to-disk enabled='no'/>
</pm>
<devices>
<emulator>/usr/bin/qemu-system-x86_64</emulator>
<disk type='file' device='disk'>
<driver name='qemu' type='raw'/>
<source file='/home/bv/ubuntu'/>
<target dev='hda' bus='ide'/>
<address type='drive' controller='0' bus='0' target='0' unit='0'/>
</disk>
<disk type='file' device='cdrom'>
<driver name='qemu' type='raw'/>
<target dev='hdb' bus='ide'/>
<readonly/>
<address type='drive' controller='0' bus='0' target='0' unit='1'/>
</disk>
<controller type='usb' index='0' model='ich9-ehci1'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x04'
function='0x7'/>
</controller>
<controller type='usb' index='0' model='ich9-uhci1'>
<master startport='0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x04'
function='0x0' multifunction='on'/>
</controller>
<controller type='usb' index='0' model='ich9-uhci2'>
<master startport='2'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x04'
function='0x1'/>
</controller>
<controller type='usb' index='0' model='ich9-uhci3'>
<master startport='4'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x04'
function='0x2'/>
</controller>
<controller type='pci' index='0' model='pci-root'/>
<controller type='ide' index='0'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01'
function='0x1'/>
</controller>
<interface type='network'>
<mac address='52:54:00:c6:99:a2'/>
<source network='default'/>
<model type='e1000'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03'
function='0x0'/>
</interface>
<interface type='vhostuser'>
<mac address='52:54:00:4c:47:f2'/>
<source type='unix' path='/tmp//vm00.sock' mode='server'/>
<model type='virtio'/>
<driver rx_queue_size='1024' tx_queue_size='1024'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x06'
function='0x0'/>
</interface>
<serial type='pty'>
<target type='isa-serial' port='0'>
<model name='isa-serial'/>
</target>
</serial>
<console type='pty'>
<target type='serial' port='0'/>
</console>
<input type='tablet' bus='usb'>
<address type='usb' bus='0' port='1'/>
</input>
<input type='mouse' bus='ps2'/>
<input type='keyboard' bus='ps2'/>
<graphics type='vnc' port='5901' autoport='no' listen='0.0.0.0'>
<listen type='address' address='0.0.0.0'/>
</graphics>
<video>
<model type='qxl' ram='65536' vram='65536' vgamem='16384' heads='1'
primary='yes'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02'
function='0x0'/>
</video>
<memballoon model='virtio'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x05'
function='0x0'/>
</memballoon>
</devices>
</domain>
I can see the vhost interface has been properly setup:
vpp# sh vhost-user
Virtio vhost-user interfaces
Global:
coalesce frames 32 time 1e-3
Number of rx virtqueues in interrupt mode: 0
Number of GSO interfaces: 0
Thread 0: Polling queue count 1
Interface: VirtualEthernet0/0/0 (ifindex 2)
Number of qids 2
virtio_net_hdr_sz 12
features mask (0xfffffffbdfffa27c):
features (0x150208000):
VIRTIO_NET_F_MRG_RXBUF (15)
VIRTIO_NET_F_GUEST_ANNOUNCE (21)
VIRTIO_RING_F_INDIRECT_DESC (28)
VHOST_USER_F_PROTOCOL_FEATURES (30)
VIRTIO_F_VERSION_1 (32)
protocol features (0x3)
VHOST_USER_PROTOCOL_F_MQ (0)
VHOST_USER_PROTOCOL_F_LOG_SHMFD (1)
socket filename /tmp/vm00.sock type client errno "Success"
rx placement:
thread 0 on vring 1, polling
tx placement
threads 0 on vring 0: lock-free
Memory regions (total 1)
region fd guest_phys_addr memory_size userspace_addr
mmap_offset mmap_addr
====== ===== ================== ================== ==================
================== ==================
0 192 0x0000000000000000 0x0000000040000000 0x00007fb34be00000
0x0000000000000000 0x00007f0fb0000000
Virtqueue 0 (TX)
global TX queue index 3
qsz 1024 last_avail_idx 0 last_used_idx 0 last_kick 0
avail.flags 0 avail event idx 0 avail.idx 0 used.flags 1 used event idx 0
used.idx 0
kickfd 193 callfd 194 errfd -1
Virtqueue 1 (RX)
global RX queue index 3
qsz 1024 last_avail_idx 0 last_used_idx 0 last_kick 0
avail.flags 0 avail event idx 0 avail.idx 0 used.flags 1 used event idx 0
used.idx 0
kickfd 190 callfd 195 errfd -1
And all interfaces are UP:
vpp# sh int
Name Idx State MTU (L3/IP4/IP6/MPLS)
Counter Count
TenGigabitEthernet44/0/0 1 up 9000/0/0/0 rx
packets 754
rx
bytes 45240
drops
144
VirtualEthernet0/0/0 2 up 9000/0/0/0 tx
packets 610
tx
bytes 36600
drops
610
tx-error 144
local0 0 down 0/0/0/0
However I see errors happening with VirtualEthernet0/0/0 Tx:
vpp# show errors
Count Node Reason
Severity
784 l2-output L2 output packets
error
784 l2-learn L2 learn packets
error
1 l2-learn L2 learn misses
error
784 l2-input L2 input packets
error
784 l2-flood L2 flood packets
error
640 VirtualEthernet0/0/0-tx tx packet drops (no available
descr error
144 VirtualEthernet0/0/0-output interface is down
error
I've been trying with multiple VM and got the same result.
How can I troubleshoot this issue ?
Thanks,
Best regards,
Benjamin
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