Hi

> -----Original Message-----
> From: Wang, Jie1X <jie1x.w...@intel.com>
> Sent: Wednesday, July 14, 2021 01:04
> To: dev@dpdk.org
> Cc: Li, Xiaoyun <xiaoyun...@intel.com>; andrew.rybche...@oktetlabs.ru; Wang,
> Jie1X <jie1x.w...@intel.com>; sta...@dpdk.org
> Subject: [PATCH v2] app/testpmd: fix testpmd doesn't show RSS hash offload
> 
> This patch reapply Rx/Tx offloads configuration for all ports after the 
> program
> configuring the device port. When the program configures the ports, the 
> default
> Rx/Tx offloads are modified in
> dev->data->dev_conf.
> 
> So it is need to reapply Rx/Tx offloads configuration after dev_configure.
> 
> Fixes: ce8d561418d4 ("app/testpmd: add port configuration settings")
> Cc: sta...@dpdk.org
> 
> Signed-off-by: Jie Wang <jie1x.w...@intel.com>
> ---
> v2: copy "rx/txmode.offloads", instead of copying the entire struct 
> "dev->data-
> >dev_conf.rx/txmode".
> ---
>  app/test-pmd/testpmd.c | 19 +++++++++++++++++++
>  1 file changed, 19 insertions(+)
> 
> diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c index
> 1cdd3cdd12..dc9ce5330b 100644
> --- a/app/test-pmd/testpmd.c
> +++ b/app/test-pmd/testpmd.c
> @@ -2475,6 +2475,11 @@ start_port(portid_t pid)
>               }
> 
>               if (port->need_reconfig > 0) {
> +                     const struct rte_eth_dev *dev = &rte_eth_devices[pi];
> +                     struct rte_eth_conf *dev_conf;
> +                     int k;
> +
> +                     dev_conf = &dev->data->dev_conf;
>                       port->need_reconfig = 0;
> 
>                       if (flow_isolate_all) {
> @@ -2508,6 +2513,20 @@ start_port(portid_t pid)
>                               port->need_reconfig = 1;
>                               return -1;
>                       }
> +                     /* Apply Rx offloads configuration */
> +                     for (k = 0; k < port->dev_info.max_rx_queues; k++) {
> +                             if (port->rx_conf[k].offloads !=
> +                                     dev_conf->rxmode.offloads)
> +                                     port->rx_conf[k].offloads =
> +                                             dev_conf->rxmode.offloads;
> +                     }

I was suggesting something like:
        if (dev_conf->rxmode.offloads != port->dev_conf->rxmode.offloads) {
                port->dev_conf->rxmode.offloads = dev_conf->rxmode.offloads;
                for (queues)
                        update offloads for each queue of this port
        }

Not only check and change queue offload.

> +                     /* Apply Tx offloads configuration */
> +                     for (k = 0; k < port->dev_info.max_tx_queues; k++) {
> +                             if (port->tx_conf[k].offloads !=
> +                                     dev_conf->txmode.offloads)
> +                                     port->tx_conf[k].offloads =
> +                                             dev_conf->txmode.offloads;
> +                     }
>               }
>               if (port->need_reconfig_queues > 0) {
>                       port->need_reconfig_queues = 0;
> --
> 2.25.1

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