Re: [dpdk-stable] [dpdk-dev] [PATCH] app/testpmd: fix testpmd doesn't show RSS hash offload

[Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>]

On 7/9/21 6:57 PM, Jie Wang wrote:
> 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.
> 
> So it is need to reapply Rx/Tx offloads configuration before
> testpmd showing offloads.
> 
> Fixes: ce8d561418d4 ("app/testpmd: add port configuration settings")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Jie Wang <jie1x.wang@intel.com>
> ---
>  app/test-pmd/testpmd.c | 15 +++++++++++++++
>  1 file changed, 15 insertions(+)
> 
> diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c
> index 1cdd3cdd12..7089ae216d 100644
> --- a/app/test-pmd/testpmd.c
> +++ b/app/test-pmd/testpmd.c
> @@ -2475,6 +2475,9 @@ start_port(portid_t pid)
>  		}
>  
>  		if (port->need_reconfig > 0) {
> +			const struct rte_eth_dev *dev = &rte_eth_devices[pi];
> +			int k;
> +
>  			port->need_reconfig = 0;
>  
>  			if (flow_isolate_all) {
> @@ -2508,6 +2511,18 @@ start_port(portid_t pid)
>  				port->need_reconfig = 1;
>  				return -1;
>  			}
> +
> +			/* Apply TxRx configuration for all ports */
> +			port->dev_conf.txmode = dev->data->dev_conf.txmode;
> +			port->dev_conf.rxmode = dev->data->dev_conf.rxmode;
> +			/* Apply Rx offloads configuration */
> +			for (k = 0; k < port->dev_info.max_rx_queues; k++)
> +				port->rx_conf[k].offloads =
> +					port->dev_conf.rxmode.offloads;
> +			/* Apply Tx offloads configuration */
> +			for (k = 0; k < port->dev_info.max_tx_queues; k++)
> +				port->tx_conf[k].offloads =
> +					port->dev_conf.txmode.offloads;

Does testpmd really require these copies? May be the right fix is to get
rid of these copies at all and show actual
information from data->dev_conf ?