Hi,
The trace looks good to me.
Please use tcpdump to trace on Linux side to see what is happening. Please also
check for error counters on Linux side.
-br
Mohsin
From: <vpp-dev@lists.fd.io> on behalf of "long...@gmail.com" <long...@gmail.com>
Date: Thursday, April 7, 2022 at 2:57 AM
To: "vpp-dev@lists.fd.io" <vpp-dev@lists.fd.io>
Subject: Re: [vpp-dev] Fastest way to connect application in user space to VPP
#vpp
On Thu, Apr 7, 2022 at 05:04 AM, Mohsin Kazmi wrote:
trace add virtio-input 10
Hi Mohsin.
This is the trace log:
------------------- Start of thread 1 vpp_wk_0 -------------------
Packet 1
00:25:26:931409: virtio-input
virtio: hw_if_index 1 next-index 4 vring 0 len 42
hdr: flags 0x00 gso_type 0x00 hdr_len 0 gso_size 0 csum_start 0 csum_offset
0 num_buffers 1
00:25:26:931412: ethernet-input
ARP: 0a:00:27:00:00:14 -> ff:ff:ff:ff:ff:ff
00:25:26:931415: l2-input
l2-input: sw_if_index 1 dst ff:ff:ff:ff:ff:ff src 0a:00:27:00:00:14
[l2-output ]
00:25:26:931418: l2-output
l2-output: sw_if_index 2 dst ff:ff:ff:ff:ff:ff src 0a:00:27:00:00:14 data 08
06 00 01 08 00 06 04 00 01 0a 00
00:25:26:931420: tap0-output
tap0
ARP: 0a:00:27:00:00:14 -> ff:ff:ff:ff:ff:ff
request, type ethernet/IP4, address size 6/4
0a:00:27:00:00:14/192.168.56.1 -> 00:00:00:00:00:00/192.168.56.101
00:25:26:931422: tap0-tx
buffer 0x963ba: current data 0, length 42, buffer-pool 0, ref-count 1,
totlen-nifb 0, trace handle 0x1000000
l2-hdr-offset 0 l3-hdr-offset 14
hdr-sz 0 l2-hdr-offset 0 l3-hdr-offset 14 l4-hdr-offset 0 l4-hdr-sz 0
ARP: 0a:00:27:00:00:14 -> ff:ff:ff:ff:ff:ff
request, type ethernet/IP4, address size 6/4
0a:00:27:00:00:14/192.168.56.1 -> 00:00:00:00:00:00/192.168.56.101
------------------- Start of thread 2 vpp_wk_1 -------------------
Packet 1
00:25:26:931584: virtio-input
virtio: hw_if_index 2 next-index 4 vring 0 len 42
hdr: flags 0x00 gso_type 0x00 hdr_len 0 gso_size 0 csum_start 0 csum_offset
0 num_buffers 1
00:25:26:931587: ethernet-input
ARP: 02:fe:4d:3e:ec:be -> 0a:00:27:00:00:14
00:25:26:931588: l2-input
l2-input: sw_if_index 2 dst 0a:00:27:00:00:14 src 02:fe:4d:3e:ec:be
[l2-output ]
00:25:26:931589: l2-output
l2-output: sw_if_index 1 dst 0a:00:27:00:00:14 src 02:fe:4d:3e:ec:be data 08
06 00 01 08 00 06 04 00 02 02 fe
00:25:26:931590: virtio-0/0/8/0-output
virtio-0/0/8/0
ARP: 02:fe:4d:3e:ec:be -> 0a:00:27:00:00:14
reply, type ethernet/IP4, address size 6/4
02:fe:4d:3e:ec:be/192.168.56.101 -> 0a:00:27:00:00:14/192.168.56.1
00:25:26:931591: virtio-0/0/8/0-tx
buffer 0x93f04: current data 0, length 42, buffer-pool 0, ref-count 1,
totlen-nifb 0, trace handle 0x2000000
l2-hdr-offset 0 l3-hdr-offset 14
hdr-sz 0 l2-hdr-offset 0 l3-hdr-offset 14 l4-hdr-offset 0 l4-hdr-sz 0
ARP: 02:fe:4d:3e:ec:be -> 0a:00:27:00:00:14
reply, type ethernet/IP4, address size 6/4
02:fe:4d:3e:ec:be/192.168.56.101 -> 0a:00:27:00:00:14/192.168.56.1
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