[PATCH] app/testpmd: add command to get Tx queue used count

[fengchengwen]

Please doc this command in doc/guides/testpmd_app_ug/testpmd_funcs.rst
Also why not extend "show port rxq xxx" command to support txq ?

On 2024/1/24 20:18, skoteshwar at marvell.com wrote:
> From: Satha Rao <skoteshwar at marvell.com>
> 
> Fastpath API to get txq used count.
> 
>    testpmd> show port 0 txq 0 desc count
> 
> Signed-off-by: Satha Rao <skoteshwar at marvell.com>
> ---
>  app/test-pmd/cmdline.c | 78 ++++++++++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 78 insertions(+)
> 
> diff --git a/app/test-pmd/cmdline.c b/app/test-pmd/cmdline.c
> index f704319..1d09633 100644
> --- a/app/test-pmd/cmdline.c
> +++ b/app/test-pmd/cmdline.c
> @@ -12638,6 +12638,83 @@ struct cmd_show_port_supported_ptypes_result {
>  	},
>  };
>  
> +/* *** display tx queue desc used count *** */
> +struct cmd_show_tx_queue_desc_count_result {
> +	cmdline_fixed_string_t cmd_show;
> +	cmdline_fixed_string_t cmd_port;
> +	cmdline_fixed_string_t cmd_txq;
> +	cmdline_fixed_string_t cmd_desc;
> +	cmdline_fixed_string_t cmd_count;
> +	portid_t cmd_pid;
> +	portid_t cmd_qid;
> +};
> +
> +static void
> +cmd_show_tx_queue_desc_count_parsed(void *parsed_result,
> +		__rte_unused struct cmdline *cl,
> +		__rte_unused void *data)
> +{
> +	struct cmd_show_tx_queue_desc_count_result *res = parsed_result;
> +	int rc;
> +
> +	if (rte_eth_tx_queue_is_valid(res->cmd_pid, res->cmd_qid) != 0) {
> +		fprintf(stderr, "Invalid input: port id = %d, queue id = %d\n",	res->cmd_pid,
> +			res->cmd_qid);
> +		return;
> +	}
> +
> +	rc = rte_eth_tx_queue_count(res->cmd_pid, res->cmd_qid);
> +	if (rc < 0) {
> +		fprintf(stderr, "Tx queue count get failed rc=%d queue_id=%d\n", rc, res->cmd_qid);
> +		return;
> +	}
> +	printf("TxQ %d used desc count = %d\n", res->cmd_qid, rc);
> +}
> +
> +static cmdline_parse_token_string_t cmd_show_tx_queue_desc_count_show =
> +	TOKEN_STRING_INITIALIZER
> +		(struct cmd_show_tx_queue_desc_count_result,
> +		 cmd_show, "show");
> +static cmdline_parse_token_string_t cmd_show_tx_queue_desc_count_port =
> +	TOKEN_STRING_INITIALIZER
> +		(struct cmd_show_tx_queue_desc_count_result,
> +		 cmd_port, "port");
> +static cmdline_parse_token_num_t cmd_show_tx_queue_desc_count_pid =
> +	TOKEN_NUM_INITIALIZER
> +		(struct cmd_show_tx_queue_desc_count_result,
> +		 cmd_pid, RTE_UINT16);
> +static cmdline_parse_token_string_t cmd_show_tx_queue_desc_count_txq =
> +	TOKEN_STRING_INITIALIZER
> +		(struct cmd_show_tx_queue_desc_count_result,
> +		 cmd_txq, "txq");
> +static cmdline_parse_token_num_t cmd_show_tx_queue_desc_count_qid =
> +	TOKEN_NUM_INITIALIZER
> +		(struct cmd_show_tx_queue_desc_count_result,
> +		 cmd_qid, RTE_UINT16);
> +static cmdline_parse_token_string_t cmd_show_tx_queue_desc_count_desc =
> +	TOKEN_STRING_INITIALIZER
> +		(struct cmd_show_tx_queue_desc_count_result,
> +		 cmd_desc, "desc");
> +static cmdline_parse_token_string_t cmd_show_tx_queue_desc_count_count =
> +	TOKEN_STRING_INITIALIZER
> +		(struct cmd_show_tx_queue_desc_count_result,
> +		 cmd_count, "count");
> +static cmdline_parse_inst_t cmd_show_tx_queue_desc_count = {
> +	.f = cmd_show_tx_queue_desc_count_parsed,
> +	.data = NULL,
> +	.help_str = "show port <port_id> txq <queue_id> desc count",
> +	.tokens = {
> +		(void *)&cmd_show_tx_queue_desc_count_show,
> +		(void *)&cmd_show_tx_queue_desc_count_port,
> +		(void *)&cmd_show_tx_queue_desc_count_pid,
> +		(void *)&cmd_show_tx_queue_desc_count_txq,
> +		(void *)&cmd_show_tx_queue_desc_count_qid,
> +		(void *)&cmd_show_tx_queue_desc_count_desc,
> +		(void *)&cmd_show_tx_queue_desc_count_count,
> +		NULL,
> +	},
> +};
> +
>  /* *** display rx/tx descriptor status *** */
>  struct cmd_show_rx_tx_desc_status_result {
>  	cmdline_fixed_string_t cmd_show;
> @@ -13346,6 +13423,7 @@ struct cmd_config_tx_affinity_map {
>  	(cmdline_parse_inst_t *)&cmd_show_tx_metadata,
>  	(cmdline_parse_inst_t *)&cmd_show_rx_tx_desc_status,
>  	(cmdline_parse_inst_t *)&cmd_show_rx_queue_desc_used_count,
> +	(cmdline_parse_inst_t *)&cmd_show_tx_queue_desc_count,
>  	(cmdline_parse_inst_t *)&cmd_set_raw,
>  	(cmdline_parse_inst_t *)&cmd_show_set_raw,
>  	(cmdline_parse_inst_t *)&cmd_show_set_raw_all,
>