Re: [dpdk-dev] [PATCH] app/testpmd: increase array for fetching supported FEC caps

["Min Hu (Connor)" <humin29@huawei.com>]

在 2020/12/21 6:47, Rahul Lakkireddy 写道:
> From: Karra Satwik <kaara.satwik@chelsio.com>
> 
> Request the driver for number of entries in the FEC caps
> array and then dynamically allocate the array.
> 
> Signed-off-by: Karra Satwik <kaara.satwik@chelsio.com>
> Signed-off-by: Rahul Lakkireddy <rahul.lakkireddy@chelsio.com>
> ---
>   app/test-pmd/cmdline.c | 29 ++++++++++++++++++++---------
>   1 file changed, 20 insertions(+), 9 deletions(-)
> 
> diff --git a/app/test-pmd/cmdline.c b/app/test-pmd/cmdline.c
> index 2ccbaa039..d7a90d55e 100644
> --- a/app/test-pmd/cmdline.c
> +++ b/app/test-pmd/cmdline.c
> @@ -16263,29 +16263,40 @@ cmd_show_fec_capability_parsed(void *parsed_result,
>   		__rte_unused struct cmdline *cl,
>   		__rte_unused void *data)
>   {
> -#define FEC_CAP_NUM 2
>   	struct cmd_show_fec_capability_result *res = parsed_result;
> -	struct rte_eth_fec_capa speed_fec_capa[FEC_CAP_NUM];
> -	unsigned int num = FEC_CAP_NUM;
> -	unsigned int ret_num;
> -	int ret;
> +	struct rte_eth_fec_capa *speed_fec_capa;
> +	int num, ret;
>   
>   	if (!rte_eth_dev_is_valid_port(res->cmd_pid)) {
>   		printf("Invalid port id %u\n", res->cmd_pid);
>   		return;
>   	}
>   
> -	ret = rte_eth_fec_get_capability(res->cmd_pid, speed_fec_capa, num);
Hi, the type of num is "unsigned int" in rte_eth_fec_get_capability,
please keep in accordance with it.

> +	ret = rte_eth_fec_get_capability(res->cmd_pid, NULL, 0);
>   	if (ret == -ENOTSUP) {
>   		printf("Function not implemented\n");
>   		return;
>   	} else if (ret < 0) {
> -		printf("Get FEC capability failed\n");
> +		printf("Get FEC capability failed: %d\n", ret);
> +		return;
> +	}
> +
> +	num = ret;
> +	speed_fec_capa = calloc(num, sizeof(*speed_fec_capa));
> +	if (!speed_fec_capa) {
> +		printf("Failed to alloc FEC capability buffer\n");
>   		return;
>   	}
>   
> -	ret_num = (unsigned int)ret;
> -	show_fec_capability(ret_num, speed_fec_capa);
> +	ret = rte_eth_fec_get_capability(res->cmd_pid, speed_fec_capa, num);
> +	if (ret < 0) {
> +		printf("Error getting FEC capability: %d\n", ret);
> +		goto out;
> +	}
> +
> +	show_fec_capability(num, speed_fec_capa);
> +out:
> +	free(speed_fec_capa);
>   }
>   
>   cmdline_parse_token_string_t cmd_show_fec_capability_show =
>