Hi,
I am trying to pass traffic with vhost-user interface and seeing tx-drops on
virtual interface. Here is the setup: created a bridge domain with a physical
interface and a vhost-user interface. Physical interface GigabitEthernet5/0/0
is connected to traffic generator. As shown below, observing drops on
VirtualEthernet0/0/0 .
Following is the config and vhost-user commands o/p:
DBGvpp# show bridge-domain 1 detail
BD-ID Index BSN Age(min) Learning U-Forwrd UU-Flood Flooding
ARP-Term BVI-Intf
1 1 0 off on on on on off
N/A
Interface If-idx ISN SHG BVI TxFlood
VLAN-Tag-Rewrite
GigabitEthernet5/0/0 3 1 0 - * none
GigabitEthernet5/0/1 4 1 0 - * none
VirtualEthernet0/0/0 5 1 0 - * none
Virtual interface is operationally up. Connected to virtual interface server in
VM.
DBGvpp# show hardware-interfaces VirtualEthernet0/0/0
Name Idx Link Hardware
VirtualEthernet0/0/0 5 up VirtualEthernet0/0/0
Ethernet address 02:fe:98:19:c2:6b
DBGvpp# show interface VirtualEthernet0/0/0
Name Idx State Counter Count
VirtualEthernet0/0/0 5 up tx packets
1
tx bytes
60
drops
1
DBGvpp# show errors
Count Node Reason
3 l2-output L2 output packets
2 l2-learn L2 learn packets
2 l2-learn L2 learn misses
2 l2-input L2 input packets
3 l2-flood L2 flood packets
1 VirtualEthernet0/0/0-tx tx packet drops (no available
descriptors)
DBGvpp# show vhost-user VirtualEthernet0/0/0
Virtio vhost-user interfaces
Global:
coalesce frames 32 time 1e-3
number of rx virtqueues in interrupt mode: 0
Interface: VirtualEthernet0/0/0 (ifindex 5)
virtio_net_hdr_sz 12
features mask (0xffffffffffffffff):
features (0x150208000):
VIRTIO_NET_F_MRG_RXBUF (15)
VIRTIO_NET_F_GUEST_ANNOUNCE (21)
VIRTIO_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 /socket/vnet-0 type client errno "Success"
rx placement:
thread 0 on vring 1, polling
tx placement: lock-free
thread 0 on vring 0
Memory regions (total 3)
region fd guest_phys_addr memory_size userspace_addr
mmap_offset mmap_addr
====== ===== ================== ================== ==================
================== ==================
0 50 0x0000000100000000 0x00000001c0000000 0x00007fe393600000
0x00000000c0000000 0x00007fc0e4a00000
1 51 0x0000000000000000 0x00000000000a0000 0x00007fe2d3600000
0x0000000000000000 0x00007fc024800000
2 52 0x00000000000c0000 0x00000000bff40000 0x00007fe2d36c0000
0x00000000000c0000 0x00007fbf648c0000
Virtqueue 0 (TX)
qsz 256 last_avail_idx 0 last_used_idx 0
avail.flags 0 avail.idx 0 used.flags 1 used.idx 0
kickfd 53 callfd 54 errfd -1
Virtqueue 1 (RX)
qsz 256 last_avail_idx 0 last_used_idx 0
avail.flags 0 avail.idx 0 used.flags 1 used.idx 0
kickfd 46 callfd 55 errfd -1
Tried dumping descriptors from Rx queue and didn’t find any entries. It’s all
zeros.
Any idea what is going on here ?
Thanks,
Vijay
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