Hi Mohsin
I have find the root cause of this issue. VPP send a huge malform packet
to linux kernel,
the memcpy in VNET_DEVICE_CLASS_TX_FN (af_packet_device_class)
overwrite the tx_ring
Thanks
Guangming
[email protected]
From: Mohsin Kazmi via lists.fd.io
Date: 2022-11-21 19:00
To: [email protected]
Subject: Re: [vpp-dev] "tx frame not ready " error in host-vpp1out tx
Hi Guangming,
What is the VPP version are you using?
-br
Mohsin
From: <[email protected]> on behalf of Guangming <[email protected]>
Reply-To: "[email protected]" <[email protected]>
Date: Tuesday, November 8, 2022 at 8:01 AM
To: "Mohsin Kazmi (sykazmi)" <[email protected]>, vpp-dev <[email protected]>
Subject: [vpp-dev] "tx frame not ready " error in host-vpp1out tx
Hi,Mohsin
I used linux veth pari interface as af-packet interfeace in vpp.
When the vpp run for some time, there are many "tx frame not ready " error
in host-vpp1out-tx.
If there is error, we can not ping from linux side to vpp side. Must need
restart vpp to restore.
From old mail. you say "tx frame not ready" means VPP didn't find empty queue
at linux side. But in my
envirment ,the trafiic is not big . Could give me some clues?
vvp# monitor interface
host-vpp1out interval 1 count 10
rx: 34.74Kpps 294.82Mbps tx: 17.68Kpps 32.39Mbps
rx: 42.78Kpps 372.72Mbps tx: 19.97Kpps 37.45Mbps
rx: 38.29Kpps 322.97Mbps tx: 18.50Kpps 33.34Mbps
rx: 33.73Kpps 273.07Mbps tx: 16.19Kpps 35.59Mbps
rx: 37.39Kpps 317.19Mbps tx: 15.38Kpps 33.30Mbps
rx: 33.81Kpps 274.42Mbps tx: 16.21Kpps 34.01Mbps
rx: 39.40Kpps 339.30Mbps tx: 16.12Kpps 33.15Mbps
rx: 37.98Kpps 330.83Mbps tx: 15.55Kpps 31.44Mbps
rx: 39.59Kpps 340.14Mbps tx: 16.37Kpps 36.92Mbps
rx: 39.44Kpps 340.84Mbps tx: 15.48Kpps 35.64Mbps
linux side
vpp1host: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1600
inet 10.155.32.76 netmask 255.0.0.0 broadcast 10.255.255.255
ether e2:27:5e:cb:38:6b txqueuelen 1000 (Ethernet)
RX packets 375729479 bytes 105801826082 (98.5 GiB)
RX errors 0 dropped 21875 overruns 0 frame 0
TX packets 829224788 bytes 867242223136 (807.6 GiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
vpp1out: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1600
ether 2e:1d:20:a2:bd:9c txqueuelen 1000 (Ethernet)
RX packets 829224804 bytes 867242242079 (807.6 GiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 375729488 bytes 105801827209 (98.5 GiB)
TX errors 0 dropped 10937 overruns 0 carrier 0 collisions 0
VPP side
vpp# show interface addr
TenGigabitEthernet19/0/0 (up):
L3 10.155.32.6/27
TenGigabitEthernet19/0/2 (up):
L3 10.155.32.68/29
host-vpp1out (up):
L3 10.155.32.75/29
local0 (dn):
host-vpp1out 3 up host-vpp1out
Link speed: unknown
RX Queues:
queue thread mode
0 vpp_wk_0 (1) interrupt
Ethernet address 02:fe:06:f0:ef:d6
Linux PACKET socket interface
block:10485760 frame:10240
next frame:867
available:0 request:0 sending:0 wrong:1024 total:1024
Thanks
Guangming
[email protected]
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