[dpdk-dev] [PATCH] examples/l2fwd-event: set RSS based on device capabilities

[Jerin Jacob]

On Mon, Dec 16, 2019 at 11:07 AM <pbhagavatula at marvell.com> wrote:
>
> From: Pavan Nikhilesh <pbhagavatula at marvell.com>
>
> Setup RSS configuration based on underlying device capabilities.
>
> Signed-off-by: Satananda Burla <sburla at marvell.com>
> Signed-off-by: Pavan Nikhilesh <pbhagavatula at marvell.com>
> ---


Please add Fixes: and cc stable as well as it is a fix for the bug.


>  examples/l2fwd-event/l2fwd_common.c | 11 +++++++++++
>  1 file changed, 11 insertions(+)
>
> diff --git a/examples/l2fwd-event/l2fwd_common.c b/examples/l2fwd-event/l2fwd_common.c
> index 0c069ec35..2fae6f52c 100644
> --- a/examples/l2fwd-event/l2fwd_common.c
> +++ b/examples/l2fwd-event/l2fwd_common.c
> @@ -46,6 +46,17 @@ l2fwd_event_init_ports(struct l2fwd_resources *rsrc)
>                 if (ret != 0)
>                         rte_panic("Error during getting device (port %u) info: %s\n",
>                                   port_id, strerror(-ret));
> +               local_port_conf.rx_adv_conf.rss_conf.rss_hf &=
> +                       dev_info.flow_type_rss_offloads;
> +               if (local_port_conf.rx_adv_conf.rss_conf.rss_hf !=
> +                               port_conf.rx_adv_conf.rss_conf.rss_hf) {
> +                       printf("Port %u modified RSS hash function based on hardware support,"
> +                              "requested:%#"PRIx64" configured:%#"PRIx64"",
> +                               port_id,
> +                               port_conf.rx_adv_conf.rss_conf.rss_hf,
> +                               local_port_conf.rx_adv_conf.rss_conf.rss_hf);
> +               }
> +
>                 if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
>                         local_port_conf.txmode.offloads |=
>                                 DEV_TX_OFFLOAD_MBUF_FAST_FREE;
> --
> 2.17.1
>