examples/packet_ordering: enhance getopt_long usage

Instead of using getopt_long return value, strcmp was used to
compare the input parameters with the struct option array. This
patch get rid of all those strcmp by directly binding each longopt
with an int enum. This is to improve readability and consistency in
all examples.

Bugzilla ID: 238

Reported-by: David Marchand <david.marchand@redhat.com>
Signed-off-by: Ibtisam Tariq <ibtisam.tariq@emumba.com>
Reviewed-by: David Marchand <david.marchand@redhat.com>

diff --git a/examples/packet_ordering/main.c b/examples/packet_ordering/main.c
index 4bea198..ff67074 100644 (file)
--- a/examples/packet_ordering/main.c
+++ b/examples/packet_ordering/main.c
@@ -29,6 +29,13 @@
 /* Macros for printing using RTE_LOG */
 #define RTE_LOGTYPE_REORDERAPP          RTE_LOGTYPE_USER1
 
+enum {
+#define OPT_DISABLE_REORDER "disable-reorder"
+       OPT_DISABLE_REORDER_NUM = 256,
+#define OPT_INSIGHT_WORKER  "insight-worker"
+       OPT_INSIGHT_WORKER_NUM,
+};
+
 unsigned int portmask;
 unsigned int disable_reorder;
 unsigned int insight_worker;
@@ -157,9 +164,9 @@ parse_args(int argc, char **argv)
        char **argvopt;
        char *prgname = argv[0];
        static struct option lgopts[] = {
-               {"disable-reorder", 0, 0, 0},
-               {"insight-worker", 0, 0, 0},
-               {NULL, 0, 0, 0}
+               {OPT_DISABLE_REORDER, 0, NULL, OPT_DISABLE_REORDER_NUM},
+               {OPT_INSIGHT_WORKER,  0, NULL, OPT_INSIGHT_WORKER_NUM },
+               {NULL,                0, 0,    0                      }
        };
 
        argvopt = argv;
@@ -176,18 +183,18 @@ parse_args(int argc, char **argv)
                                return -1;
                        }
                        break;
+
                /* long options */
-               case 0:
-                       if (!strcmp(lgopts[option_index].name, "disable-reorder")) {
-                               printf("reorder disabled\n");
-                               disable_reorder = 1;
-                       }
-                       if (!strcmp(lgopts[option_index].name,
-                                               "insight-worker")) {
-                               printf("print all worker statistics\n");
-                               insight_worker = 1;
-                       }
+               case OPT_DISABLE_REORDER_NUM:
+                       printf("reorder disabled\n");
+                       disable_reorder = 1;
+                       break;
+
+               case OPT_INSIGHT_WORKER_NUM:
+                       printf("print all worker statistics\n");
+                       insight_worker = 1;
                        break;
+
                default:
                        print_usage(prgname);
                        return -1;