4. dpdk-pmdinfo Application

The dpdk-pmdinfo.py tool is a Data Plane Development Kit (DPDK) utility that can dump a PMDs hardware support info in the JSON format.

4.1. Synopsis

dpdk-pmdinfo.py [-h] [-p] [-v] ELF_FILE [ELF_FILE ...]

4.2. Arguments

-h, --help

Show the inline help.

-p, --search-plugins

In addition of ELF_FILEs and their linked dynamic libraries, also scan the DPDK plugins path.

-v, --verbose

Display warnings due to linked libraries not found or ELF/JSON parsing errors in these libraries. Use twice to show debug messages.

ELF_FILE

DPDK application binary or dynamic library. Any linked librte_*.so library (as reported by ldd) will also be analyzed. Can be specified multiple times.

4.3. Environment Variables

LD_LIBRARY_PATH

If specified, the linked librte_*.so libraries will be looked up here first.

4.4. Examples

Get the complete info for a given driver:

$ dpdk-pmdinfo.py /usr/bin/dpdk-testpmd | \
    jq '.[] | select(.name == "net_ice_dcf")'
{
  "name": "net_ice_dcf",
  "params": "cap=dcf",
  "kmod": "* igb_uio | vfio-pci",
  "pci_ids": [
    {
      "vendor": "8086",
      "device": "1889"
    }
  ]
}

Get only the required kernel modules for a given driver:

$ dpdk-pmdinfo.py /usr/bin/dpdk-testpmd | \
    jq '.[] | select(.name == "net_cn10k").kmod'
"vfio-pci"

Get only the required kernel modules for a given device:

$ dpdk-pmdinfo.py /usr/bin/dpdk-testpmd | \
    jq '.[] | select(.pci_ids[]? | .vendor == "15b3" and .device == "1013").kmod'
"* ib_uverbs & mlx5_core & mlx5_ib"