[dpdk-dev] [PATCH] app/testpmd: limit number of forwarding cores
Nélio Laranjeiro
nelio.laranjeiro at 6wind.com
Tue Jun 28 10:41:34 CEST 2016
On Mon, Jun 27, 2016 at 11:35:19PM +0100, Pablo de Lara wrote:
> Number of forwarding cores must be equal or less than
> number of forwarding streams, otherwise two cores
> would try to use a same queue on a port, which is not allowed.
>
> Fixes: f2bb7ae1d204 ("app/testpmd: handle all Rx queues in RSS setup")
>
> Signed-off-by: Pablo de Lara <pablo.de.lara.guarch at intel.com>
> ---
> app/test-pmd/config.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/app/test-pmd/config.c b/app/test-pmd/config.c
> index 9ccabf9..de60284 100644
> --- a/app/test-pmd/config.c
> +++ b/app/test-pmd/config.c
> @@ -1236,6 +1236,10 @@ rss_fwd_config_setup(void)
> cur_fwd_config.nb_fwd_streams =
> (streamid_t) (nb_q * cur_fwd_config.nb_fwd_ports);
>
> + if (cur_fwd_config.nb_fwd_streams < cur_fwd_config.nb_fwd_lcores)
> + cur_fwd_config.nb_fwd_lcores =
> + (lcoreid_t)cur_fwd_config.nb_fwd_streams;
> +
> /* reinitialize forwarding streams */
> init_fwd_streams();
>
> --
> 2.5.5
Tested with:
- coremask allowing to use 12 cores for 4 txqs and 4 rxqs.
- coremask allowing to use 12 cores for 6 txqs and 6 rxqs.
- coremask allowing to use 12 cores for 8 txqs and 8 rxqs.
It fixes the issue.
Tested-by: Nelio Laranjeiro <nelio.laranjeiro at 6wind.com>
--
Nélio Laranjeiro
6WIND
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