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To: Andrew Rybchenko <arybchenko@solarflare.com>,
Wenzhuo Lu <wenzhuo.lu@intel.com>, Jingjing Wu <jingjing.wu@intel.com>,
Bernard Iremonger <bernard.iremonger@intel.com>,
Adrien Mazarguil <adrien.mazarguil@6wind.com>
Cc: dev@dpdk.org, Ivan Ilchenko <Ivan.Ilchenko@oktetlabs.ru>
References: <1566915962-5472-1-git-send-email-arybchenko@solarflare.com>
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Message-ID: <932aee2b-0ecb-a5d9-1dff-7b16bafd2d61@intel.com>
Date: Mon, 2 Sep 2019 13:40:11 +0100
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Subject: Re: [dpdk-dev] [PATCH 02/51] app/testpmd: check status of getting
ethdev info
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On 8/27/2019 3:25 PM, Andrew Rybchenko wrote:
> From: Ivan Ilchenko <Ivan.Ilchenko@oktetlabs.ru>
>
> Add eth_dev_info_get_print_err() which is a wrapper for
> rte_eth_dev_info_get() printing error if rte_eth_dev_info_get()
> fails and returning its status code.
>
> Signed-off-by: Ivan Ilchenko <Ivan.Ilchenko@oktetlabs.ru>
> Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
<...>
> @@ -2410,9 +2414,13 @@ struct cmd_config_rss_hash_key {
> struct rte_eth_dev_info dev_info;
> uint8_t hash_key_size;
> uint32_t key_len;
> + int ret;
>
> memset(&dev_info, 0, sizeof(dev_info));
It should be in different most probably, but the 'memset' before
'rte_eth_dev_info_get()' looks redundant, since API does the same.
<...>
> @@ -4746,7 +4780,8 @@ struct cmd_tunnel_tso_set_result {
> {
> struct rte_eth_dev_info dev_info;
>
> - rte_eth_dev_info_get(port_id, &dev_info);
> + eth_dev_info_get_print_err(port_id, &dev_info);
Should we check the return value here too? And return 'dev_info' immediately on
error instead of going on.
<...>
> @@ -1136,7 +1139,10 @@ struct extmem_param {
> /* Apply default TxRx configuration for all ports */
> port->dev_conf.txmode = tx_mode;
> port->dev_conf.rxmode = rx_mode;
> - rte_eth_dev_info_get(pid, &port->dev_info);
> +
> + ret = eth_dev_info_get_print_err(pid, &port->dev_info);
> + if (ret != 0)
> + return;
What do you think 'rte_exit()' here instead of 'return', 'init_config()' doesn't
return error, and returning from init will assume everyting setup, 0 number of
queues for any port eventually will cause an exit in the app, better to fail
where error occurs.