examples/l2fwd: fix [no-]mac-updating options

[ upstream commit bbbe38a ]

For l2fwd, --no-mac-updating and --mac-updating are treated as invalid
arguments. Rework long options parsing to let --no-mac-updating and
--mac-updating options work well.

Fixes: fa19eb2 ("examples/l2fwd: add forwarding port mapping option")

Signed-off-by: Chenglian Sun <sunchenglian@loongson.cn>
Reviewed-by: David Marchand <david.marchand@redhat.com>

examples/l2fwd/main.c

@@ -434,13 +434,16 @@ enum {
 
 	/* first long only option value must be >= 256, so that we won't
 	 * conflict with short options */
-	CMD_LINE_OPT_MIN_NUM = 256,
+	CMD_LINE_OPT_MAC_UPDATING_NUM = 256,
+	CMD_LINE_OPT_NO_MAC_UPDATING_NUM,
 	CMD_LINE_OPT_PORTMAP_NUM,
 };
 
 static const struct option lgopts[] = {
-	{ CMD_LINE_OPT_MAC_UPDATING, no_argument, &mac_updating, 1},
-	{ CMD_LINE_OPT_NO_MAC_UPDATING, no_argument, &mac_updating, 0},
+	{ CMD_LINE_OPT_MAC_UPDATING, no_argument, 0,
+		CMD_LINE_OPT_MAC_UPDATING_NUM},
+	{ CMD_LINE_OPT_NO_MAC_UPDATING, no_argument, 0,
+		CMD_LINE_OPT_NO_MAC_UPDATING_NUM},
 	{ CMD_LINE_OPT_PORTMAP_CONFIG, 1, 0, CMD_LINE_OPT_PORTMAP_NUM},
 	{NULL, 0, 0, 0}
 };
@@ -502,6 +505,14 @@ l2fwd_parse_args(int argc, char **argv)
 			}
 			break;
 
+		case CMD_LINE_OPT_MAC_UPDATING_NUM:
+			mac_updating = 1;
+			break;
+
+		case CMD_LINE_OPT_NO_MAC_UPDATING_NUM:
+			mac_updating = 0;
+			break;
+
 		default:
 			l2fwd_usage(prgname);
 			return -1;