+#ifndef RTE_EXEC_ENV_LINUXAPP
+static void
+app_init_tap(struct app_params *app) {
+ if (app->n_pktq_tap == 0)
+ return;
+
+ rte_panic("TAP device not supported.\n");
+}
+#else
+static void
+app_init_tap(struct app_params *app)
+{
+ uint32_t i;
+
+ for (i = 0; i < app->n_pktq_tap; i++) {
+ struct app_pktq_tap_params *p_tap = &app->tap_params[i];
+ struct ifreq ifr;
+ int fd, status;
+
+ APP_LOG(app, HIGH, "Initializing %s ...", p_tap->name);
+
+ fd = open("/dev/net/tun", O_RDWR | O_NONBLOCK);
+ if (fd < 0)
+ rte_panic("Cannot open file /dev/net/tun\n");
+
+ memset(&ifr, 0, sizeof(ifr));
+ ifr.ifr_flags = IFF_TAP | IFF_NO_PI; /* No packet information */
+ snprintf(ifr.ifr_name, IFNAMSIZ, "%s", p_tap->name);
+
+ status = ioctl(fd, TUNSETIFF, (void *) &ifr);
+ if (status < 0)
+ rte_panic("TAP setup error\n");
+
+ app->tap[i] = fd;
+ }
+}
+#endif
+