RE: Pdump Didn't capture the packet

["Pattan, Reshma" <reshma.pattan@intel.com>]

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From: 廖書華 <sim860927@gmail.com>
Sent: Wednesday, November 17, 2021 3:11 AM
To: Pattan, Reshma <reshma.pattan@intel.com>
Cc: users@dpdk.org
Subject: Re: Pdump Didn't capture the packet

Dear,

Thank you for the information !
I rerun the primary application with the other terminal running pdump, however it still can't capture the packet.
As for the logs you mentioned that is printed after the primary application terminates. Also, for the primary application log, I can make sure it transmits and receives the packet, but pdump still can't capture it.

[Reshma]: Are the pcap captured files empty?  That might need some debugging I guess. When you stop the pdump application you should see below stats.
If you see 0 “packets dequeued”, that means there is no Packets received from primary to pdump application.
So,  nee to  debug the pdump library what is happening , why primary application packets are not send to pdump application. You can try to debugging the pdump library and pdump
application.


packets dequeued:

packets transmitted to vdev:

packets freed:
- For the log of pdump
[oran@localhost pdump]$ sudo ./dpdk-pdump --file-prefix wls_1 -- --pdump 'port=0,queue=*,tx-dev=/home/oran/Music/tx.pcap,rx-dev=/home/oran/Music/rx.pcap'

Also, do you know whether pdump can capture the virtual function packet or not ? (We bind to vfio-pci)
[Reshma]: I have not tested with VFs ,  I always used PFs.
Best Regards,
Shu-hua, Liao

Pattan, Reshma <reshma.pattan@intel.com<mailto:reshma.pattan@intel.com>> 於 2021年11月15日 週一 下午4:58寫道：


From: 廖書華 <sim860927@gmail.com<mailto:sim860927@gmail.com>>
Sent: Monday, November 15, 2021 5:39 AM
To: users@dpdk.org<mailto:users@dpdk.org>
Cc: 林庭安 <lingwanjae@gmail.com<mailto:lingwanjae@gmail.com>>
Subject: Pdump Didn't capture the packet

Dear all,

Currently, I want to use pdump to capture our DPDK application, however for the pdump side, unfortunately, didn't capture any packet, also pdump didn't print any error. While for our application, it also didn't print any log related to pdump.
- Here's the log of pdump
[oran@localhost pdump]$ sudo ./dpdk-pdump --file-prefix wls_1 -- --pdump 'port=0,queue=*,tx-dev=/home/oran/Music/tx.pcap,rx-dev=/home/oran/Music/rx.pcap'

<snip>

Primary process is no longer active, exiting...

[Reshma]: From this log it is clear that, primary application is not running.  Rerun the primary application and in other terminal run the pdump application.

Best Regards,
Shu-hua, Liao

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