From: Ferruh Yigit <ferruh.yigit@xilinx.com>
To: Robin Jarry <rjarry@redhat.com>, <dev@dpdk.org>
Cc: Olivier Matz <olivier.matz@6wind.com>,
Bruce Richardson <bruce.richardson@intel.com>
Subject: Re: [PATCH v4] usertools: rewrite pmdinfo
Date: Tue, 20 Sep 2022 18:48:27 +0100 [thread overview]
Message-ID: <b17b105a-c288-e0c2-f3e2-3442364523b1@xilinx.com> (raw)
In-Reply-To: <20220920104212.476889-1-rjarry@redhat.com>
On 9/20/2022 11:42 AM, Robin Jarry wrote:
>
> dpdk-pmdinfo.py does not produce any parseable output. The -r/--raw flag
> merely prints multiple independent JSON lines which cannot be fed
> directly to any JSON parser. Moreover, the script complexity is rather
> high for such a simple task: extracting PMD_INFO_STRING from .rodata ELF
> sections. Rewrite it so that it can produce valid JSON.
>
> Remove the PCI database parsing for PCI-ID to Vendor-Device names
> conversion. This should be done by external scripts (if really needed).
>
> Here are some examples of use with jq:
>
> Get the complete info for a given driver:
>
> ~$ usertools/dpdk-pmdinfo.py build/app/dpdk-testpmd | \
> jq '.[] | select(.name == "dmadev_idxd_pci")'
> {
> "name": "dmadev_idxd_pci",
> "params": "max_queues=0",
> "kmod": "vfio-pci",
> "pci_ids": [
> {
> "vendor": "8086",
> "device": "0b25"
> }
> ]
> }
>
> Get only the required kernel modules for a given driver:
>
> ~$ usertools/dpdk-pmdinfo.py build/app/dpdk-testpmd | \
> jq '.[] | select(.name == "net_i40e").kmod'
> "* igb_uio | uio_pci_generic | vfio-pci"
>
> Get only the required kernel modules for a given device:
>
> ~$ usertools/dpdk-pmdinfo.py build/app/dpdk-testpmd | \
> jq '.[] | select(.pci_ids[] | .vendor == "15b3" and .device == "1013").kmod'
> "* ib_uverbs & mlx5_core & mlx5_ib"
>
> Print the list of drivers which define multiple parameters without
> space separators:
>
> ~$ usertools/dpdk-pmdinfo.py build/app/dpdk-testpmd | \
> jq '.[] | select(.params!=null and (.params|test("=[^ ]+="))) | {name, params}'
> ...
>
> The script passes flake8, black, isort and pylint checks.
>
> I have tested this with a matrix of python/pyelftools versions:
>
> pyelftools
> 0.22 0.23 0.24 0.25 0.26 0.27 0.28 0.29
> 3.6 ok ok ok ok ok ok ok ok
> 3.7 ok ok ok ok ok ok ok ok
> Python 3.8 ok ok ok ok ok ok ok ok
> 3.9 ok ok ok ok ok ok ok ok
> 3.10 fail fail fail fail ok ok ok ok
>
> All failures with python 3.10 are related to the same issue:
>
> File "elftools/construct/lib/container.py", line 5, in <module>
> from collections import MutableMapping
> ImportError: cannot import name 'MutableMapping' from 'collections'
>
> Python 3.10 support is only available since pyelftools 0.26. The script
> will only work with Python 3.6 and later. Update the minimal system
> requirements and release notes.
>
> NB: The output produced by the legacy -r/--raw flag can be obtained with
> the following command:
>
> strings build/app/dpdk-testpmd | sed -n 's/^PMD_INFO_STRING= //p'
>
> Cc: Olivier Matz <olivier.matz@6wind.com>
> Cc: Ferruh Yigit <ferruh.yigit@xilinx.com>
> Cc: Bruce Richardson <bruce.richardson@intel.com>
> Signed-off-by: Robin Jarry <rjarry@redhat.com>
<...>
> diff --git a/doc/guides/rel_notes/release_22_11.rst b/doc/guides/rel_notes/release_22_11.rst
> index 8c021cf0505e..67054f5acdc9 100644
> --- a/doc/guides/rel_notes/release_22_11.rst
> +++ b/doc/guides/rel_notes/release_22_11.rst
> @@ -84,6 +84,11 @@ API Changes
> Also, make sure to start the actual text at the margin.
> =======================================================
>
> +* The ``dpdk-pmdinfo.py`` script was rewritten to produce valid JSON only.
> + PCI-IDs parsing has been removed.
> + To get a similar output to the (now removed) ``-r/--raw`` flag, you may use the following command::
> +
> + strings $dpdk_binary_or_driver | sed -n 's/^PMD_INFO_STRING= //p'
>
Empty line is missing (in case there will be a new version for some
other reason).
Thanks for the update,
Tested-by: Ferruh Yigit <ferruh.yigit@xilinx.com>
next prev parent reply other threads:[~2022-09-20 17:48 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-13 10:58 [PATCH] usertools: rewrite pmdinfo Robin Jarry
2022-09-13 11:29 ` Ferruh Yigit
2022-09-13 11:49 ` Robin Jarry
2022-09-13 13:50 ` Ferruh Yigit
2022-09-13 13:59 ` Robin Jarry
2022-09-13 14:17 ` Ferruh Yigit
2022-09-13 14:17 ` Bruce Richardson
2022-09-13 19:42 ` [PATCH v2] " Robin Jarry
2022-09-13 20:54 ` Ferruh Yigit
2022-09-13 21:22 ` Robin Jarry
2022-09-14 11:46 ` Ferruh Yigit
2022-09-15 9:18 ` Robin Jarry
2022-09-20 9:08 ` [PATCH v3] " Robin Jarry
2022-09-20 10:10 ` Ferruh Yigit
2022-09-20 10:12 ` Robin Jarry
2022-09-20 10:42 ` [PATCH v4] " Robin Jarry
2022-09-20 14:08 ` Olivier Matz
2022-09-20 17:48 ` Ferruh Yigit [this message]
2022-09-20 17:50 ` Ferruh Yigit
2022-09-21 7:27 ` Thomas Monjalon
2022-09-21 8:02 ` Ferruh Yigit
2022-09-20 19:15 ` Robin Jarry
2022-09-21 7:58 ` Ferruh Yigit
2022-09-21 9:57 ` Ferruh Yigit
2022-09-22 11:58 ` [PATCH v5] " Robin Jarry
2022-09-22 12:03 ` Bruce Richardson
2022-09-22 15:12 ` Ferruh Yigit
2022-09-26 11:55 ` Olivier Matz
2022-09-26 12:52 ` Robin Jarry
2022-09-26 13:44 ` [PATCH v6] " Robin Jarry
2022-09-26 15:17 ` Bruce Richardson
2022-09-28 6:51 ` Robin Jarry
2022-09-28 10:53 ` Bruce Richardson
2022-09-28 11:12 ` Robin Jarry
2022-10-04 19:29 ` [PATCH v7] " Robin Jarry
2022-10-10 22:44 ` Thomas Monjalon
2022-10-12 15:16 ` Olivier Matz
2022-10-12 16:16 ` Thomas Monjalon
2022-10-12 16:30 ` Robin Jarry
2022-10-12 16:44 ` Thomas Monjalon
2022-10-12 16:48 ` Robin Jarry
2022-10-12 20:40 ` Thomas Monjalon
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