examples: work only on defined lcores

[dpdk.git] / examples / exception_path / main.c

diff --git a/examples/exception_path/main.c b/examples/exception_path/main.c
index 55bf58d..356ec3a 100644 (file)
--- a/examples/exception_path/main.c
+++ b/examples/exception_path/main.c
@@ -245,21 +245,21 @@ static int tap_create(char *name)
 }
 
 /* Main processing loop */
-static  __attribute__((noreturn)) int
+static int
 main_loop(__attribute__((unused)) void *arg)
 {
        const unsigned lcore_id = rte_lcore_id();
        char tap_name[IFNAMSIZ];
        int tap_fd;
 
-       /* Create new tap interface */
-       rte_snprintf(tap_name, IFNAMSIZ, "tap_dpdk_%.2u", lcore_id);
-       tap_fd = tap_create(tap_name);
-       if (tap_fd < 0)
-               FATAL_ERROR("Could not create tap interface \"%s\" (%d)",
-                           tap_name, tap_fd);
-
        if ((1 << lcore_id) & input_cores_mask) {
+               /* Create new tap interface */
+               rte_snprintf(tap_name, IFNAMSIZ, "tap_dpdk_%.2u", lcore_id);
+               tap_fd = tap_create(tap_name);
+               if (tap_fd < 0)
+                       FATAL_ERROR("Could not create tap interface \"%s\" (%d)",
+                                       tap_name, tap_fd);
+
                PRINT_INFO("Lcore %u is reading from port %u and writing to %s",
                           lcore_id, (unsigned)port_ids[lcore_id], tap_name);
                fflush(stdout);
@@ -286,6 +286,13 @@ main_loop(__attribute__((unused)) void *arg)
                }
        }
        else if ((1 << lcore_id) & output_cores_mask) {
+               /* Create new tap interface */
+               rte_snprintf(tap_name, IFNAMSIZ, "tap_dpdk_%.2u", lcore_id);
+               tap_fd = tap_create(tap_name);
+               if (tap_fd < 0)
+                       FATAL_ERROR("Could not create tap interface \"%s\" (%d)",
+                                       tap_name, tap_fd);
+
                PRINT_INFO("Lcore %u is reading from %s and writing to port %u",
                           lcore_id, tap_name, (unsigned)port_ids[lcore_id]);
                fflush(stdout);
@@ -318,8 +325,7 @@ main_loop(__attribute__((unused)) void *arg)
        }
        else {
                PRINT_INFO("Lcore %u has nothing to do", lcore_id);
-               for (;;)
-                       ; /* loop doing nothing */
+               return 0;
        }
        /*
         * Tap file is closed automatically when program exits. Putting close()