[dpdk-dev] [PATCH v1] eal: add error check for core options

[Burakov, Anatoly]

On 01-Feb-18 3:39 PM, Marko Kovacevic wrote:
> Error information on the current core
> usage list,mask and map were incomplete.
> Added states to differentiate core usage
> and to inform user.

Nitpicking, but line width on commit message is a little on the short 
side...

> 
> Signed-off-by: Marko Kovacevic <marko.kovacevic at intel.com>
> ---
>   doc/guides/testpmd_app_ug/run_app.rst      |  4 ++++
>   lib/librte_eal/common/eal_common_options.c | 33 +++++++++++++++++++++++++++---
>   2 files changed, 34 insertions(+), 3 deletions(-)
> 
> diff --git a/doc/guides/testpmd_app_ug/run_app.rst b/doc/guides/testpmd_app_ug/run_app.rst
> index 46da1df..26500bf 100644
> --- a/doc/guides/testpmd_app_ug/run_app.rst
> +++ b/doc/guides/testpmd_app_ug/run_app.rst
> @@ -62,6 +62,10 @@ See the DPDK Getting Started Guides for more information on these options.
>       The grouping ``()`` can be omitted for single element group.
>       The ``@`` can be omitted if cpus and lcores have the same value.
>   
> +.. Note::
> +   When ``--lcores`` is in use, the options ``-l`` and ``-c`` cannot be used.
> +
> +
>   *   ``--master-lcore ID``
>   
>       Core ID that is used as master.
> diff --git a/lib/librte_eal/common/eal_common_options.c b/lib/librte_eal/common/eal_common_options.c
> index b6d2762..6604c64 100644
> --- a/lib/librte_eal/common/eal_common_options.c
> +++ b/lib/librte_eal/common/eal_common_options.c
> @@ -57,6 +57,9 @@
>   #include "eal_filesystem.h"
>   
>   #define BITS_PER_HEX 4
> +#define LCORE_OPT_LST 1
> +#define LCORE_OPT_MSK 2
> +#define LCORE_OPT_MAP 3
>   
>   const char
>   eal_short_options[] =
> @@ -1028,7 +1031,15 @@ eal_parse_common_option(int opt, const char *optarg,
>   			RTE_LOG(ERR, EAL, "invalid coremask\n");
>   			return -1;
>   		}
> -		core_parsed = 1;
> +
> +		if (core_parsed) {
> +			RTE_LOG(ERR, EAL, "Core Mask Option is ignored, because core (%s) is set!\n",
> +				(core_parsed == LCORE_OPT_LST)?"LIST" :
> +				(core_parsed == LCORE_OPT_MAP)?"MAP" : "Unknown");

i think "LIST" and "MAP" are terribly undescriptive. It would be better 
to put the respective cmdline arguments ("-l" or "-c") there instead. 
Same applies to other cases.

Otherwise,

Reviewed-by: Anatoly Burakov <anatoly.burakov at intel.com>

> +			return -1;
> +		}
> +
> +		core_parsed = LCORE_OPT_MSK;
>   		break;
>   	/* corelist */
>   	case 'l':
> @@ -1036,7 +1047,15 @@ eal_parse_common_option(int opt, const char *optarg,
>   			RTE_LOG(ERR, EAL, "invalid core list\n");
>   			return -1;
>   		}
> -		core_parsed = 1;
> +
> +		if (core_parsed) {
> +			RTE_LOG(ERR, EAL, "Core List Option is ignored, because core (%s) is set!\n",
> +				(core_parsed == LCORE_OPT_MSK)?"LIST" :
> +				(core_parsed == LCORE_OPT_MAP)?"MAP" : "Unknown");
> +			return -1;
> +		}
> +
> +		core_parsed = LCORE_OPT_LST;
>   		break;
>   	/* service coremask */
>   	case 's':
> @@ -1156,7 +1175,15 @@ eal_parse_common_option(int opt, const char *optarg,
>   				OPT_LCORES "\n");
>   			return -1;
>   		}
> -		core_parsed = 1;
> +
> +		if (core_parsed) {
> +			RTE_LOG(ERR, EAL, "Core Map Option is ignored, because core (%s) is set!\n",
> +				(core_parsed == LCORE_OPT_LST)?"LIST" :
> +				(core_parsed == LCORE_OPT_MSK)?"MASK" : "Unknown");
> +			return -1;
> +		}
> +
> +		core_parsed = LCORE_OPT_MAP;
>   		break;
>   
>   	/* don't know what to do, leave this to caller */
> 


-- 
Thanks,
Anatoly