DPDK Queues

[Dylan Baros <dcbaros@utexas.edu>]

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Good afternoon,

I am working on learning DPDK in an attempt to write a DPDK based
application and I have a few questions.

My setup:

   - 2 x Intel Xeon Gold 6348 CPU @ 2.6 Ghz
      - 28 cores per socket
      - Max 3.5 Ghz
      - Hyperthreading disabled
      - Ubuntu 22.04.1 LTS
      - Kernel 5.15.0-53-generic
      - Cores set to performance governor
      - 4 x Sabrent 2TB Rocket 4 Plus in RAID0 Config
      - 128 GB DDR4 Memory
      - 10 1GB HugePages (Can change to what is required)
   - 1 x Mellanox ConnectX-5 100gbe NIC
      - 31:00.0 Ethernet controller: Mellanox Technologies MT27800 Family
      [ConnectX-5]
      - Firmware-version: 16.35.1012
   - UDP Source:
      - 100 gbe NIC
      - 9000 MTU Packets
      - ipv4-udp packets


The UDP source provides packets with 4 different destination ports. I want
to direct each port to a queue and have writer threads pull data from the
queue and write the payloads to one file per queue.

My questions are:
1. How can I direct the data to different queues depending on port
destination? RSS or rte_flow? If so how do I direct it to do so?

2. Can you have one lcore per queue or does it have to be one lcore per
port?

3. How can I get to the payload in the packets? Any code examples of this?

Thanks,
DB

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