[v4,8/8] examples/l3fwd-power: update to call arg parser API

Update to the l3fwd-power example application to call the arg parser
library for its 'combined core string parser' instead of implementing its
own corelist parser. The default_type passed into the function call is
a corelist.

Signed-off-by: Euan Bourke <euan.bourke@intel.com>
Acked-by: David Hunt <david.hunt@intel.com>
---
 examples/l3fwd-power/perf_core.c | 52 ++++++--------------------------
 1 file changed, 9 insertions(+), 43 deletions(-)
  

[AMD Official Use Only - General]

> -----Original Message-----
> From: Euan Bourke <euan.bourke@intel.com>
> Sent: Friday, December 15, 2023 10:57 PM
> To: dev@dpdk.org
> Cc: Euan Bourke <euan.bourke@intel.com>; David Hunt <david.hunt@intel.com>;
> Anatoly Burakov <anatoly.burakov@intel.com>; Tummala, Sivaprasad
> <Sivaprasad.Tummala@amd.com>
> Subject: [PATCH v4 8/8] examples/l3fwd-power: update to call arg parser API
>
> Caution: This message originated from an External Source. Use proper caution
> when opening attachments, clicking links, or responding.
>
>
> Update to the l3fwd-power example application to call the arg parser library for its
> 'combined core string parser' instead of implementing its own corelist parser. The
> default_type passed into the function call is a corelist.
>
> Signed-off-by: Euan Bourke <euan.bourke@intel.com>
> Acked-by: David Hunt <david.hunt@intel.com>
> ---
>  examples/l3fwd-power/perf_core.c | 52 ++++++--------------------------
>  1 file changed, 9 insertions(+), 43 deletions(-)
>
> diff --git a/examples/l3fwd-power/perf_core.c b/examples/l3fwd-power/perf_core.c
> index 41ef6d0c9a..e8ed414d40 100644
> --- a/examples/l3fwd-power/perf_core.c
> +++ b/examples/l3fwd-power/perf_core.c
> @@ -12,6 +12,7 @@
>  #include <rte_lcore.h>
>  #include <rte_power.h>
>  #include <rte_string_fns.h>
> +#include <rte_arg_parser.h>
>
>  #include "perf_core.h"
>  #include "main.h"
> @@ -177,56 +178,21 @@ parse_perf_config(const char *q_arg)  int
> parse_perf_core_list(const char *corelist)  {
> -       int i, idx = 0;
> -       unsigned int count = 0;
> -       char *end = NULL;
> -       int min, max;
> +       int count;
> +       uint16_t cores[RTE_MAX_LCORE];
>
>         if (corelist == NULL) {
>                 printf("invalid core list\n");
>                 return -1;
>         }
>
> +       count = rte_arg_parse_core_string(corelist, cores, RTE_DIM(cores),
> +                               RTE_ARG_PARSE_TYPE_CORELIST);
>
> -       /* Remove all blank characters ahead and after */
> -       while (isblank(*corelist))
> -               corelist++;
> -       i = strlen(corelist);
> -       while ((i > 0) && isblank(corelist[i - 1]))
> -               i--;
> +       for (int i = 0; i < count; i++)
> +               hp_lcores[i] = cores[i];
>
> -       /* Get list of cores */
> -       min = RTE_MAX_LCORE;
> -       do {
> -               while (isblank(*corelist))
> -                       corelist++;
> -               if (*corelist == '\0')
> -                       return -1;
> -               errno = 0;
> -               idx = strtoul(corelist, &end, 10);
> -               if (errno || end == NULL)
> -                       return -1;
> -               while (isblank(*end))
> -                       end++;
> -               if (*end == '-') {
> -                       min = idx;
> -               } else if ((*end == ',') || (*end == '\0')) {
> -                       max = idx;
> -                       if (min == RTE_MAX_LCORE)
> -                               min = idx;
> -                       for (idx = min; idx <= max; idx++) {
> -                               hp_lcores[count] = idx;
> -                               count++;
> -                       }
> -                       min = RTE_MAX_LCORE;
> -               } else {
> -                       printf("invalid core list\n");
> -                       return -1;
> -               }
> -               corelist = end + 1;
> -       } while (*end != '\0');
> -
> -       if (count == 0) {
> +       if (count == 0 || count == -1) {
>                 printf("invalid core list\n");
>                 return -1;
>         }
> @@ -234,7 +200,7 @@ parse_perf_core_list(const char *corelist)
>         nb_hp_lcores = count;
>
>         printf("Configured %d high performance cores\n", nb_hp_lcores);
> -       for (i = 0; i < nb_hp_lcores; i++)
> +       for (int i = 0; i < nb_hp_lcores; i++)
>                 printf("\tHigh performance core %d %d\n",
>                                 i, hp_lcores[i]);
>
> --
> 2.34.1

Acked-by: Sivaprasad Tummala <sivaprasad.tummala@amd.com>