Troubles using pdump to capture the packets

[Pattan, Reshma]

From: 廖書華 <sim860927 at gmail.com>
Sent: Friday, October 15, 2021 5:16 AM
To: Pattan, Reshma <reshma.pattan at intel.com>
Cc: Stephen Hemminger <stephen at networkplumber.org>; users at dpdk.org; 林庭安 <lingwanjae at gmail.com>
Subject: Re: Troubles using pdump to capture the packets

>>Dear Reshma,

>>Thanks for your kind response ! Unfortunately, it still can't work.


Also, could you please paste me the lbpcap-devel package version on your system.

Thanks,
Reshma

Pattan, Reshma <reshma.pattan at intel.com<mailto:reshma.pattan at intel.com>> 於 2021年10月14日 週四 下午5:52寫道：


> -----Original Message-----
> From: 廖書華 <sim860927 at gmail.com<mailto:sim860927 at gmail.com>>


> Yes, I already set *CONFIG_RTE_LIBRTE_PMD_PCAP=y *and
> *CONFIG_RTE_LIBRTE_PDUMP=y *in the file "dpdk-
> 19.11/config/common_base"
> then build DPDK.
> Also, in the files "dpdk-19.11/x86_64-native-linuxapp-icc/.config" and "dpdk-
> 19.11/x86_64-native-linuxapp-icc/.config.orig", they also show that
> *CONFIG_RTE_LIBRTE_PMD_PCAP=y *and *CONFIG_RTE_LIBRTE_PDUMP=y.*
>
> It seems that it already enabled pcap PMD of DPDK.
> Do you have other suggestions ?

Hi,

Few options you can double check
1)Make sure your primary application is calling rte_pdump_init()/ret_pudmp_uninit() to initialize/uninitialize the pdump library.
2)If you are using a shared library build,   double check you are  linking pcap pmd properly in primary build as explained in below link
https://www.mail-archive.com/users@dpdk.org/msg05039.html
https://stackoverflow.com/questions/62795017/dpdk-pdump-failed-to-hotplug-add-device
3)If you are passing any pci device using  eal "-w" option to primary,  try to pass the same device to secondary also using "-w" option .

If you still see the issue please paste the full primary and secondary application run log with command that you are running.
Also what kind of build you are using.

Thanks,
Reshma