Hello
I'm playing with VPP / DPDK on Dell R640 with XL710 40G card
Host is proxmox , SR IOV passing one VF to guest with debian trixie.
I had issue with 26.02 with LCP and ping from Linux to neighbors, while ping
from VPP was fine
I found issue here in mail list and dowgrade to 25.10 fixed that
But on both versions, my buffer is filling almost instantly even if i add one
empty vlan on switch port.
Now LCP is removed
Arista Config
OFF-FR-SW14#sh vlan id 1234
% VLAN 1234 not found in current VLAN database
OFF-FR-SW14#conf t
OFF-FR-SW14(config)#vlan 1234
OFF-FR-SW14(config-vlan-1234)#name TEST
OFF-FR-SW14(config-vlan-1234)#int eth53/1
OFF-FR-SW14(config-if-Et53/1)#switchport trunk allowed vlan add 1234
OFF-FR-SW14#sh runn int eth53/1
interface Ethernet53/1
description PVE5-TEST
speed forced 40gfull
switchport trunk allowed vlan 1234
switchport mode trunk
no sflow enable
spanning-tree portfast
The moment i add one vlan, some packets start entering vpp and in couple of
seconds avail buffer is set to 0
VPPCTL:
vpp# show buffers
Pool Name Index NUMA Size Data Size Total Avail Cached Used
default-numa-0 0 0 2496 2048 967604 967060 59 485
vpp# show buffers
Pool Name Index NUMA Size Data Size Total Avail Cached Used
default-numa-0 0 0 2496 2048 967604 967060 59 485
vpp# show buffers
Pool Name Index NUMA Size Data Size Total Avail Cached Used
default-numa-0 0 0 2496 2048 967604 967060 60 484
vpp# show buffers
Pool Name Index NUMA Size Data Size Total Avail Cached Used
default-numa-0 0 0 2496 2048 967604 967060 60 484
vpp# show buffers
Pool Name Index NUMA Size Data Size Total Avail Cached Used
default-numa-0 0 0 2496 2048 967604 967060 60 484
vpp# show interface
Name Idx State MTU (L3/IP4/IP6/MPLS)
Counter Count
eth0 1 up 2026/0/0/0 rx packets
30
rx bytes
3521
drops
30
ip6
1
eth0.4 2 up 0/0/0/0
local0 0 down 0/0/0/0
vpp# show interface
Name Idx State MTU (L3/IP4/IP6/MPLS)
Counter Count
eth0 1 up 2026/0/0/0 rx packets
30
rx bytes
3521
drops
30
ip6
1
eth0.4 2 up 0/0/0/0
local0 0 down 0/0/0/0
vpp# show interface
Name Idx State MTU (L3/IP4/IP6/MPLS)
Counter Count
eth0 1 up 2026/0/0/0 rx packets
48
rx bytes
5663
drops
45
punt
3
ip6
1
rx-no-buf
3790051072
eth0.4 2 up 0/0/0/0
local0 0 down 0/0/0/0
vpp# show buffers
Pool Name Index NUMA Size Data Size Total Avail Cached Used
default-numa-0 0 0 2496 2048 967604 0 35 967569
vpp#
vpp# show buffers
Pool Name Index NUMA Size Data Size Total Avail Cached Used
default-numa-0 0 0 2496 2048 967604 0 57 967547
vpp# show interface
Name Idx State MTU (L3/IP4/IP6/MPLS)
Counter Count
eth0 1 up 2026/0/0/0 rx packets
199
rx bytes
23632
drops
196
punt
3
ip6
1
rx-no-buf
52036990336
eth0.4 2 up 0/0/0/0
local0 0 down 0/0/0/0
Here is startup.conf
unix {
nodaemon
log /var/log/vpp.log
full-coredump
cli-listen /run/vpp/cli.sock
exec /etc/vpp/exec
}
api-trace { on }
api-segment { gid vpp }
socksvr { default }
cpu {
main-core 1
corelist-workers 2-5
}
memory {
main-heap-size 2G
main-heap-page-size default-hugepage
}
buffers {
buffers-per-numa 968000
default data-size 2048
page-size default-hugepage
}
statseg {
size 1G
page-size default-hugepage
per-node-counters off
}
logging {
default-log-level warn
default-syslog-log-level warn
}
dpdk {
no-multi-seg
no-tx-checksum-offload
## Bind your Intel 700 Series VF
dev 0000:00:10.0 {
name eth0
## Create 4 queues so each worker core gets its own traffic stream (RSS)
num-rx-queues 2
num-tx-queues 2
## Increase descriptors to prevent drops during spikes
num-rx-desc 256
num-tx-desc 256
}
}
plugins {
plugin default { disable }
plugin dpdk_plugin.so { enable }
plugin acl_plugin.so { enable }
plugin unittest_plugin.so { enable }
}
here is exec script
root@debian:/etc/vpp# cat exec |grep -v ^#
set interface state eth0 up
create sub-interface eth0 4
set interface state eth0.4 up
Any suggestions why no-rx-buffer is jumping so high instantly and Available
buffer dropped to zero ?
Thanks in advance.
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