[dpdk-dev] [PATCH v3] app/testpmd: support the query of link flow ctrl info

[Kevin Traynor]

On 21/04/2021 10:41, Min Hu (Connor) wrote:
> From: Huisong Li <lihuisong at huawei.com>
> 
> This patch supports the query of the link flow control parameter
> on a port.
> 
> The command format is as follows:
> show port <port_id> flow_ctrl
> 

Thanks Connor,
Acked-by: Kevin Traynor <ktraynor at redhat.com>

> Signed-off-by: Huisong Li <lihuisong at huawei.com>
> Signed-off-by: Min Hu (Connor) <humin29 at huawei.com>
> ---
> v3:
> * fixed the print format of link flow ctrl, and removes redundant
> port number verification.
> 
> v2:
> * fixed logging.
> ---
>  app/test-pmd/cmdline.c                      | 78 +++++++++++++++++++++++++++++
>  doc/guides/testpmd_app_ug/testpmd_funcs.rst |  7 +++
>  2 files changed, 85 insertions(+)
> 
> diff --git a/app/test-pmd/cmdline.c b/app/test-pmd/cmdline.c
> index d282c7c..08da2b1 100644
> --- a/app/test-pmd/cmdline.c
> +++ b/app/test-pmd/cmdline.c
> @@ -258,6 +258,9 @@ static void cmd_help_long_parsed(void *parsed_result,
>  
>  			"show port (port_id) fec_mode"
>  			"	Show fec mode of a port.\n\n"
> +
> +			"show port <port_id> flow_ctrl"
> +			"	Show flow control info of a port.\n\n"
>  		);
>  	}
>  
> @@ -6863,6 +6866,80 @@ cmdline_parse_inst_t cmd_set_allmulti_mode_one = {
>  	},
>  };
>  
> +/* *** GET CURRENT ETHERNET LINK FLOW CONTROL *** */
> +struct cmd_link_flow_ctrl_show {
> +	cmdline_fixed_string_t show;
> +	cmdline_fixed_string_t port;
> +	portid_t port_id;
> +	cmdline_fixed_string_t flow_ctrl;
> +};
> +
> +cmdline_parse_token_string_t cmd_lfc_show_show =
> +	TOKEN_STRING_INITIALIZER(struct cmd_link_flow_ctrl_show,
> +				show, "show");
> +cmdline_parse_token_string_t cmd_lfc_show_port =
> +	TOKEN_STRING_INITIALIZER(struct cmd_link_flow_ctrl_show,
> +				port, "port");
> +cmdline_parse_token_num_t cmd_lfc_show_portid =
> +	TOKEN_NUM_INITIALIZER(struct cmd_link_flow_ctrl_show,
> +				port_id, RTE_UINT16);
> +cmdline_parse_token_string_t cmd_lfc_show_flow_ctrl =
> +	TOKEN_STRING_INITIALIZER(struct cmd_link_flow_ctrl_show,
> +				flow_ctrl, "flow_ctrl");
> +
> +static void
> +cmd_link_flow_ctrl_show_parsed(void *parsed_result,
> +			      __rte_unused struct cmdline *cl,
> +			      __rte_unused void *data)
> +{
> +	struct cmd_link_flow_ctrl_show *res = parsed_result;
> +	static const char *info_border = "*********************";
> +	struct rte_eth_fc_conf fc_conf;
> +	bool rx_fc_en = false;
> +	bool tx_fc_en = false;
> +	int ret;
> +
> +	ret = rte_eth_dev_flow_ctrl_get(res->port_id, &fc_conf);
> +	if (ret != 0) {
> +		printf("Failed to get current flow ctrl information: err = %d\n",
> +		       ret);
> +		return;
> +	}
> +
> +	if (fc_conf.mode == RTE_FC_RX_PAUSE || fc_conf.mode == RTE_FC_FULL)
> +		rx_fc_en = true;
> +	if (fc_conf.mode == RTE_FC_TX_PAUSE || fc_conf.mode == RTE_FC_FULL)
> +		tx_fc_en = true;
> +
> +	printf("\n%s Flow control infos for port %-2d %s\n",
> +		info_border, res->port_id, info_border);
> +	printf("FC mode:\n");
> +	printf("   Rx pause: %s\n", rx_fc_en ? "on" : "off");
> +	printf("   Tx pause: %s\n", tx_fc_en ? "on" : "off");
> +	printf("Autoneg: %s\n", fc_conf.autoneg ? "on" : "off");
> +	printf("Pause time: 0x%x\n", fc_conf.pause_time);
> +	printf("High waterline: 0x%x\n", fc_conf.high_water);
> +	printf("Low waterline: 0x%x\n", fc_conf.low_water);
> +	printf("Send XON: %s\n", fc_conf.send_xon ? "on" : "off");
> +	printf("Forward MAC control frames: %s\n",
> +		fc_conf.mac_ctrl_frame_fwd ? "on" : "off");
> +	printf("\n%s**************   End  ***********%s\n",
> +		info_border, info_border);
> +}
> +
> +cmdline_parse_inst_t cmd_link_flow_control_show = {
> +	.f = cmd_link_flow_ctrl_show_parsed,
> +	.data = NULL,
> +	.help_str = "show port <port_id> flow_ctrl",
> +	.tokens = {
> +		(void *)&cmd_lfc_show_show,
> +		(void *)&cmd_lfc_show_port,
> +		(void *)&cmd_lfc_show_portid,
> +		(void *)&cmd_lfc_show_flow_ctrl,
> +		NULL,
> +	},
> +};
> +
>  /* *** SETUP ETHERNET LINK FLOW CONTROL *** */
>  struct cmd_link_flow_ctrl_set_result {
>  	cmdline_fixed_string_t set;
> @@ -17354,6 +17431,7 @@ cmdline_parse_ctx_t main_ctx[] = {
>  	(cmdline_parse_inst_t *)&cmd_link_flow_control_set_xon,
>  	(cmdline_parse_inst_t *)&cmd_link_flow_control_set_macfwd,
>  	(cmdline_parse_inst_t *)&cmd_link_flow_control_set_autoneg,
> +	(cmdline_parse_inst_t *)&cmd_link_flow_control_show,
>  	(cmdline_parse_inst_t *)&cmd_priority_flow_control_set,
>  	(cmdline_parse_inst_t *)&cmd_config_dcb,
>  	(cmdline_parse_inst_t *)&cmd_read_reg,
> diff --git a/doc/guides/testpmd_app_ug/testpmd_funcs.rst b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
> index c0cbc40..5dd98c2 100644
> --- a/doc/guides/testpmd_app_ug/testpmd_funcs.rst
> +++ b/doc/guides/testpmd_app_ug/testpmd_funcs.rst
> @@ -1524,6 +1524,13 @@ Where:
>  
>  * ``autoneg``: Change the auto-negotiation parameter.
>  
> +show flow ctrl
> +~~~~~~~~~~~~~~
> +
> +show the link flow control parameter on a port::
> +
> +   testpmd> show port <port_id> flow_ctrl
> +
>  set pfc_ctrl rx
>  ~~~~~~~~~~~~~~~
>  
>