Steven,
i had validated no packet send from guest via tshark (like tcpdump).
guest is ubuntu 16.04
qemu command : ( connect the guest console via vncviewer )
/usr/libexec/qemu-kvm -enable-kvm -m 512 -cpu host -vga cirrus -vnc 0.0.0.0:0
-drive file="ubuntu.qcow2",if=virtio,aio=threads -chardev
socket,id=char1,path=/tmp/a.sock,server -netdev
type=vhost-user,id=mynet1,chardev=char1,vhostforce -device
virtio-net-pci,mac=52:54:00:00:00:01,netdev=mynet1 -object
memory-backend-file,id=mem,size=512M,mem-path=/dev/hugepages,share=on -numa
node,memdev=mem -mem-prealloc
thanks,
wuxp
------------------ Original ------------------
From: "Steven Luong (sluong)"<slu...@cisco.com>;
Date: Fri, Mar 16, 2018 00:56 AM
To: "w...@anchnet.com"<w...@anchnet.com>;
"vpp-dev@lists.fd.io"<vpp-dev@lists.fd.io>;
Subject: Re: [vpp-dev] unexpected 65535 rx packets on vhost-user interface
Wuxp,
The first thing is to validate your claim that nothing sent from the VM when
VPP is restarted. Start tcpdump and watch nothing is sent from the VM. I assume
it happens all the times as supposed to once in a blue moon.
If that is validated, I’d like to see your qemu startup command to see if I can
recreate it myself.
Did you say your host is CentOS 7.4 or your VM is CentOS 7.4 or both?
Steven
From: <vpp-dev@lists.fd.io> on behalf of "w...@anchnet.com" <w...@anchnet.com>
Date: Thursday, March 15, 2018 at 9:27 AM
To: "vpp-dev@lists.fd.io" <vpp-dev@lists.fd.io>
Subject: Re: [vpp-dev] unexpected 65535 rx packets on vhost-user interface
TRACE for first run
vpp# trace add vhost-user-input 10
vpp# create vhost socket /tmp/a.sock
VirtualEthernet0/0/0
vpp# set int state VirtualEthernet0/0/0 up
vpp# show int
Name Idx State Counter
Count
VirtualEthernet0/0/0 1 up rx packets
1
rx bytes
42
drops
1
local0 0 down
vpp# show trace
------------------- Start of thread 0 vpp_main -------------------
Packet 1
00:01:29:986952: vhost-user-input
VirtualEthernet0/0/0 queue 0
virtio flags:
SINGLE_DESC Single descriptor packet
virtio_net_hdr first_desc_len 54
flags 0x00 gso_type 0
num_buff 0
00:01:29:987327: ethernet-input
ARP: 52:54:00:98:01:01 -> ff:ff:ff:ff:ff:ff
00:01:29:987383: arp-input
request, type ethernet/IP4, address size 6/4
52:54:00:98:01:01/192.168.3.2 -> 00:00:00:00:00:00/192.168.3.3
00:01:29:987408: error-drop
arp-input: Interface is not IP enabled
TRACE for second run
vpp# trace add vhost-user-input 10
vpp# create vhost socket /tmp/a.sock
VirtualEthernet0/0/0
vpp# set int state VirtualEthernet0/0/0 up
vpp# show int
Name Idx State Counter
Count
VirtualEthernet0/0/0 1 up rx packets
65535
rx bytes
2752470
drops
65535
local0 0 down
vpp# show trace
------------------- Start of thread 0 vpp_main -------------------
Packet 1
00:00:25:993064: vhost-user-input
VirtualEthernet0/0/0 queue 0
virtio flags:
SINGLE_DESC Single descriptor packet
virtio_net_hdr first_desc_len 54
flags 0x00 gso_type 0
num_buff 0
00:00:25:993541: ethernet-input
ARP: 52:54:00:98:01:01 -> ff:ff:ff:ff:ff:ff
00:00:25:993589: arp-input
request, type ethernet/IP4, address size 6/4
52:54:00:98:01:01/192.168.3.2 -> 00:00:00:00:00:00/192.168.3.3
00:00:25:993609: error-drop
arp-input: Interface is not IP enabled
Packet 2
00:00:25:993064: vhost-user-input
VirtualEthernet0/0/0 queue 0
virtio flags:
SINGLE_DESC Single descriptor packet
virtio_net_hdr first_desc_len 54
flags 0x00 gso_type 0
num_buff 0
00:00:25:993541: ethernet-input
ARP: 52:54:00:98:01:01 -> ff:ff:ff:ff:ff:ff
00:00:25:993589: arp-input
request, type ethernet/IP4, address size 6/4
52:54:00:98:01:01/192.168.3.2 -> 00:00:00:00:00:00/192.168.3.3
00:00:25:993609: error-drop
arp-input: Interface is not IP enabled
Packet 3
00:00:25:993064: vhost-user-input
VirtualEthernet0/0/0 queue 0
virtio flags:
SINGLE_DESC Single descriptor packet
virtio_net_hdr first_desc_len 54
flags 0x00 gso_type 0
num_buff 0
00:00:25:993541: ethernet-input
ARP: 52:54:00:98:01:01 -> ff:ff:ff:ff:ff:ff
00:00:25:993589: arp-input
request, type ethernet/IP4, address size 6/4
52:54:00:98:01:01/192.168.3.2 -> 00:00:00:00:00:00/192.168.3.3
00:00:25:993609: error-drop
arp-input: Interface is not IP enabled
Packet 4
00:00:25:993064: vhost-user-input
VirtualEthernet0/0/0 queue 0
virtio flags:
SINGLE_DESC Single descriptor packet
virtio_net_hdr first_desc_len 54
flags 0x00 gso_type 0
num_buff 0
00:00:25:993541: ethernet-input
ARP: 52:54:00:98:01:01 -> ff:ff:ff:ff:ff:ff
00:00:25:993589: arp-input
request, type ethernet/IP4, address size 6/4
52:54:00:98:01:01/192.168.3.2 -> 00:00:00:00:00:00/192.168.3.3
00:00:25:993609: error-drop
arp-input: Interface is not IP enabled
Packet 5
00:00:25:993064: vhost-user-input
VirtualEthernet0/0/0 queue 0
virtio flags:
SINGLE_DESC Single descriptor packet
virtio_net_hdr first_desc_len 54
flags 0x00 gso_type 0
num_buff 0
00:00:25:993541: ethernet-input
ARP: 52:54:00:98:01:01 -> ff:ff:ff:ff:ff:ff
00:00:25:993589: arp-input
request, type ethernet/IP4, address size 6/4
52:54:00:98:01:01/192.168.3.2 -> 00:00:00:00:00:00/192.168.3.3
00:00:25:993609: error-drop
arp-input: Interface is not IP enabled
Packet 6
00:00:25:993064: vhost-user-input
VirtualEthernet0/0/0 queue 0
virtio flags:
SINGLE_DESC Single descriptor packet
virtio_net_hdr first_desc_len 54
flags 0x00 gso_type 0
num_buff 0
00:00:25:993541: ethernet-input
ARP: 52:54:00:98:01:01 -> ff:ff:ff:ff:ff:ff
00:00:25:993589: arp-input
request, type ethernet/IP4, address size 6/4
52:54:00:98:01:01/192.168.3.2 -> 00:00:00:00:00:00/192.168.3.3
00:00:25:993609: error-drop
arp-input: Interface is not IP enabled
Packet 7
00:00:25:993064: vhost-user-input
VirtualEthernet0/0/0 queue 0
virtio flags:
SINGLE_DESC Single descriptor packet
virtio_net_hdr first_desc_len 54
flags 0x00 gso_type 0
num_buff 0
00:00:25:993541: ethernet-input
ARP: 52:54:00:98:01:01 -> ff:ff:ff:ff:ff:ff
00:00:25:993589: arp-input
request, type ethernet/IP4, address size 6/4
52:54:00:98:01:01/192.168.3.2 -> 00:00:00:00:00:00/192.168.3.3
00:00:25:993609: error-drop
arp-input: Interface is not IP enabled
Packet 8
00:00:25:993064: vhost-user-input
VirtualEthernet0/0/0 queue 0
virtio flags:
SINGLE_DESC Single descriptor packet
virtio_net_hdr first_desc_len 54
flags 0x00 gso_type 0
num_buff 0
00:00:25:993541: ethernet-input
ARP: 52:54:00:98:01:01 -> ff:ff:ff:ff:ff:ff
00:00:25:993589: arp-input
request, type ethernet/IP4, address size 6/4
52:54:00:98:01:01/192.168.3.2 -> 00:00:00:00:00:00/192.168.3.3
00:00:25:993609: error-drop
arp-input: Interface is not IP enabled
Packet 9
00:00:25:993064: vhost-user-input
VirtualEthernet0/0/0 queue 0
virtio flags:
SINGLE_DESC Single descriptor packet
virtio_net_hdr first_desc_len 54
flags 0x00 gso_type 0
num_buff 0
00:00:25:993541: ethernet-input
ARP: 52:54:00:98:01:01 -> ff:ff:ff:ff:ff:ff
00:00:25:993589: arp-input
request, type ethernet/IP4, address size 6/4
52:54:00:98:01:01/192.168.3.2 -> 00:00:00:00:00:00/192.168.3.3
00:00:25:993609: error-drop
arp-input: Interface is not IP enabled
Packet 10
00:00:25:993064: vhost-user-input
VirtualEthernet0/0/0 queue 0
virtio flags:
SINGLE_DESC Single descriptor packet
virtio_net_hdr first_desc_len 54
flags 0x00 gso_type 0
num_buff 0
00:00:25:993541: ethernet-input
ARP: 52:54:00:98:01:01 -> ff:ff:ff:ff:ff:ff
00:00:25:993589: arp-input
request, type ethernet/IP4, address size 6/4
52:54:00:98:01:01/192.168.3.2 -> 00:00:00:00:00:00/192.168.3.3
00:00:25:993609: error-drop
arp-input: Interface is not IP enabled
vpp#
