> From: Lokesh Chakka <lvenkatakumarchakka@gmail.com>

> Sent: Wednesday, October 9, 2024 1:15 PM

> To: Stephen Hemminger <stephen@networkplumber.org>

> Cc: Pathak, Pravin <pravin.pathak@intel.com>; Bing Zhao <bingz@nvidia.com>; users <users@dpdk.org>

> Subject: Re: unable to capture packets

> hi,

Hi Chakka,

Please don't "top post" on mailing lists; a reply "inline" with context is a lot easier to follow for all current (and future!) readers.

> did certain modifications as per your suggestions. still the same problem. not able to capture any packets....!!!

Have you tried to run the DPDK example applications? Specifically, the skeleton/basicfwd.c has a "known good" setup routine,

and forwards packets on a single core. Perhaps it is a good place to compare your setup code to, as it its known working.

> I replaced 4096 with 512. rte_pktmbuf_pool_create is giving an error. for the time being i've left it as 4K only.

> I feel it should not be a problem.

There is a problem somewhere - and currently in your code it is not root caused. This is a time to re-check

code that "seemed ok" before, because somewhere something is not behaving as you expect.

> PFA for the revised code.

Attaching code to mailing lists is not an easy/good way to review; perhaps create a git repo and push the code there?

Then provide a link, and future patches could easily show what improvements/fixes occur. (If you email another

version of the "pmd.c" file, readers cannot know what changes were made -> leads to lots of duplication of review effort)

> Output is as follows :

> ==============================================================================================

> EAL: Detected CPU lcores: 40

> EAL: Detected NUMA nodes: 1

> EAL: Detected shared linkage of DPDK

> EAL: Multi-process socket /var/run/dpdk/rte/mp_socket

> EAL: Selected IOVA mode 'VA'

> EAL: VFIO support initialized

> EAL: Using IOMMU type 1 (Type 1)

> ice_dev_init(): Failed to read device serial number

> ice_load_pkg_type(): Active package is: 1.3.39.0, ICE OS Default Package (double VLAN mode)

> main 53 port id: 0 num_of_pkts_per_queue: 4096

> ice_set_rx_function(): Using AVX2 Vector Rx (port 0).

> Received Interrupt Signal SIGINT (2). Exiting...

> main 98 time : 4 total pkts rcvd: 0 bandwidth: 0

> ==============================================================================================

<snip> previous conversation, as top-posted answers, and discussion was hard to follow.

It seems "num_of_pkts_per_queue" is used everywhere (mempool size, mbuf batch array size, rx_burst size, etc)

This is almost certainly impacting things somehow. Review skeleton/basicfwd.c for better sizes/values.

Hope that helps! Regards, -Harry