Re: [dpdk-dev] [PATCH v7 2/2] app/testpmd: fix testpmd doesn't show RSS hash offload

["Li, Xiaoyun" <xiaoyun.li@intel.com>]

Hi

> -----Original Message-----
> From: Wang, Jie1X <jie1x.wang@intel.com>
> Sent: Thursday, August 26, 2021 15:09
> To: dev@dpdk.org
> Cc: Li, Xiaoyun <xiaoyun.li@intel.com>; andrew.rybchenko@oktetlabs.ru;
> thomas@monjalon.net; Yigit, Ferruh <ferruh.yigit@intel.com>; Wang, Jie1X
> <jie1x.wang@intel.com>
> Subject: [PATCH v7 2/2] app/testpmd: fix testpmd doesn't show RSS hash
> offload
> 
> The driver may change offloads info into dev->data->dev_conf in dev_configure
> which may cause port->dev_conf and port->rx_conf contain outdated values.
> 
> This patch updates the offloads info if it changes to fix this issue.
> 
> Fixes: ce8d561418d4 ("app/testpmd: add port configuration settings")
> 
> Signed-off-by: Jie Wang <jie1x.wang@intel.com>
> ---
>  app/test-pmd/testpmd.c | 33 +++++++++++++++++++++++++++++++++
> app/test-pmd/testpmd.h |  2 ++
>  app/test-pmd/util.c    | 15 +++++++++++++++
>  3 files changed, 50 insertions(+)
> 
> diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c index
> 6cbe9ba3c8..c0bdb740fe 100644
> --- a/app/test-pmd/testpmd.c
> +++ b/app/test-pmd/testpmd.c
> @@ -2461,6 +2461,9 @@ start_port(portid_t pid)
>  		}
> 
>  		if (port->need_reconfig > 0) {
> +			struct rte_eth_conf dev_conf_info;
> +			int k;
> +
>  			port->need_reconfig = 0;
> 
>  			if (flow_isolate_all) {
> @@ -2498,6 +2501,36 @@ start_port(portid_t pid)
>  				port->need_reconfig = 1;
>  				return -1;
>  			}
> +			/* get offloads */
> +			if (0 !=
> +				eth_dev_conf_info_get_print_err(pi,
> +							&dev_conf_info)) {
> +				rte_exit(EXIT_FAILURE,
> +				    "rte_eth_dev_conf_info_get() failed\n");

rte_exit will directly exit the program. "return -1" after this won't work. Please just print errlog and return -1 like other failures.

> +				return -1;
> +			}
> +			/* Apply Rx offloads configuration */
> +			if (dev_conf_info.rxmode.offloads !=
> +				port->dev_conf.rxmode.offloads) {
> +				port->dev_conf.rxmode.offloads =
> +					dev_conf_info.rxmode.offloads;
> +				for (k = 0;
> +				     k < port->dev_info.max_rx_queues;
> +				     k++)
> +					port->rx_conf[k].offloads =
> +
> 	dev_conf_info.rxmode.offloads;
> +			}
> +			/* Apply Tx offloads configuration */
> +			if (dev_conf_info.txmode.offloads !=
> +				port->dev_conf.txmode.offloads) {
> +				port->dev_conf.txmode.offloads =
> +					dev_conf_info.txmode.offloads;
> +				for (k = 0;
> +				     k < port->dev_info.max_tx_queues;
> +				     k++)
> +					port->tx_conf[k].offloads =
> +
> 	dev_conf_info.txmode.offloads;
> +			}
>  		}
>  		if (port->need_reconfig_queues > 0) {
>  			port->need_reconfig_queues = 0;
> diff --git a/app/test-pmd/testpmd.h b/app/test-pmd/testpmd.h index
> 16a3598e48..6970a20ee4 100644
> --- a/app/test-pmd/testpmd.h
> +++ b/app/test-pmd/testpmd.h
> @@ -950,6 +950,8 @@ void show_gro(portid_t port_id);  void setup_gso(const
> char *mode, portid_t port_id);  int eth_dev_info_get_print_err(uint16_t port_id,
>  			struct rte_eth_dev_info *dev_info);
> +int eth_dev_conf_info_get_print_err(uint16_t port_id,
> +			struct rte_eth_conf *dev_conf_info);
>  void eth_set_promisc_mode(uint16_t port_id, int enable);  void
> eth_set_allmulticast_mode(uint16_t port, int enable);  int
> eth_link_get_nowait_print_err(uint16_t port_id, struct rte_eth_link *link); diff --
> git a/app/test-pmd/util.c b/app/test-pmd/util.c index 5dd7157947..170d8f5c61
> 100644
> --- a/app/test-pmd/util.c
> +++ b/app/test-pmd/util.c
> @@ -440,6 +440,21 @@ eth_dev_info_get_print_err(uint16_t port_id,
>  	return ret;
>  }
> 
> +int
> +eth_dev_conf_info_get_print_err(uint16_t port_id,
> +				struct rte_eth_conf *dev_conf_info) {
> +	int ret;
> +
> +	ret = rte_eth_dev_conf_info_get(port_id, dev_conf_info);
> +	if (ret != 0)
> +		fprintf(stderr,
> +			"Error during getting device configuration (port %u)
> info: %s\n",
> +			port_id, strerror(-ret));
> +
> +	return ret;
> +}
> +
>  void
>  eth_set_promisc_mode(uint16_t port, int enable)  {
> --
> 2.25.1