Re: [PATCH v4 0/2] app/testpmd: assign share group dynamically

[Stephen Hemminger <stephen@networkplumber.org>]

On Wed, 25 Mar 2026 20:09:04 +0100
Dariusz Sosnowski <dsosnowski@nvidia.com> wrote:

> Our internal regression tests have flagged issues with shared Rx queues.
> Specifically, issues with domain mismatches:
> 
> 	Invalid shared rxq config: switch domain mismatch ports 0 and 3
> 
> These started appearing after commit [1] which added checks
> for globally unique share group indexes.
> This could be worked around with --rxq-share=N option,
> but it does not allow proper testing of all use cases [2].
> 
> This patchset addresses that by changing behavior of --rxq-share parameter.
> Instead of relying on user to select proper parameter value,
> testpmd will dynamically assign globally unique share group index
> to each unique switch and Rx domain.
> 
> [1]: 8ebba91086f4 ("app/testpmd: fail on shared Rx queue switch mismatch")
> [2]: https://inbox.dpdk.org/dev/yotjxacqrodttraqrr3r6ftut4cty66g6cjnr5ughswtatapgh@gqqkftskp3qq/
> 
> v4:
> - Use short circuit return try_release_share_group().
> 
> v3:
> - Use short circuit return in assign_share_group().
> - Replace assert in assign_share_group() with error checking.
> - Do not require optional argument with --rxq-share option.
> - Fix typo in docs: update -> updates
> 
> v2:
> - Add releasing share groups when ports are closed.
> - Add static to share_group_slots array definition.
> - Remove double empty line in revert commit.
> 
> Dariusz Sosnowski (2):
>   app/testpmd: assign share group dynamically
>   app/testpmd: revert switch domain mismatch check
> 
>  app/test-pmd/parameters.c             |  14 +--
>  app/test-pmd/testpmd.c                | 121 ++++++++++++++++----------
>  app/test-pmd/testpmd.h                |   2 +-
>  doc/guides/testpmd_app_ug/run_app.rst |  10 +--
>  4 files changed, 86 insertions(+), 61 deletions(-)
> 
> --
> 2.47.3
> 

Applied to next-net thanks