app/testpmd: optimize mbuf pool allocation
[dpdk.git] / app / test-pmd / testpmd.c
index 38b8b7a..001f0e5 100644 (file)
@@ -127,6 +127,8 @@ portid_t nb_ports;             /**< Number of probed ethernet ports. */
 struct fwd_lcore **fwd_lcores; /**< For all probed logical cores. */
 lcoreid_t nb_lcores;           /**< Number of probed logical cores. */
 
+portid_t ports_ids[RTE_MAX_ETHPORTS]; /**< Store all port ids. */
+
 /*
  * Test Forwarding Configuration.
  *    nb_fwd_lcores <= nb_cfg_lcores <= nb_lcores
@@ -155,9 +157,8 @@ struct fwd_engine * fwd_engines[] = {
        &tx_only_engine,
        &csum_fwd_engine,
        &icmp_echo_engine,
-#if defined RTE_LIBRTE_PMD_SOFTNIC && defined RTE_LIBRTE_SCHED
-       &softnic_tm_engine,
-       &softnic_tm_bypass_engine,
+#if defined RTE_LIBRTE_PMD_SOFTNIC
+       &softnic_fwd_engine,
 #endif
 #ifdef RTE_LIBRTE_IEEE1588
        &ieee1588_fwd_engine,
@@ -333,8 +334,6 @@ lcoreid_t latencystats_lcore_id = -1;
  */
 struct rte_eth_rxmode rx_mode = {
        .max_rx_pkt_len = ETHER_MAX_LEN, /**< Default maximum frame length. */
-       .offloads = DEV_RX_OFFLOAD_CRC_STRIP,
-       .ignore_offload_bitfield = 1,
 };
 
 struct rte_eth_txmode tx_mode = {
@@ -346,7 +345,7 @@ struct rte_fdir_conf fdir_conf = {
        .pballoc = RTE_FDIR_PBALLOC_64K,
        .status = RTE_FDIR_REPORT_STATUS,
        .mask = {
-               .vlan_tci_mask = 0x0,
+               .vlan_tci_mask = 0xFFEF,
                .ipv4_mask     = {
                        .src_ip = 0xFFFFFFFF,
                        .dst_ip = 0xFFFFFFFF,
@@ -393,6 +392,38 @@ uint8_t bitrate_enabled;
 struct gro_status gro_ports[RTE_MAX_ETHPORTS];
 uint8_t gro_flush_cycles = GRO_DEFAULT_FLUSH_CYCLES;
 
+struct vxlan_encap_conf vxlan_encap_conf = {
+       .select_ipv4 = 1,
+       .select_vlan = 0,
+       .vni = "\x00\x00\x00",
+       .udp_src = 0,
+       .udp_dst = RTE_BE16(4789),
+       .ipv4_src = IPv4(127, 0, 0, 1),
+       .ipv4_dst = IPv4(255, 255, 255, 255),
+       .ipv6_src = "\x00\x00\x00\x00\x00\x00\x00\x00"
+               "\x00\x00\x00\x00\x00\x00\x00\x01",
+       .ipv6_dst = "\x00\x00\x00\x00\x00\x00\x00\x00"
+               "\x00\x00\x00\x00\x00\x00\x11\x11",
+       .vlan_tci = 0,
+       .eth_src = "\x00\x00\x00\x00\x00\x00",
+       .eth_dst = "\xff\xff\xff\xff\xff\xff",
+};
+
+struct nvgre_encap_conf nvgre_encap_conf = {
+       .select_ipv4 = 1,
+       .select_vlan = 0,
+       .tni = "\x00\x00\x00",
+       .ipv4_src = IPv4(127, 0, 0, 1),
+       .ipv4_dst = IPv4(255, 255, 255, 255),
+       .ipv6_src = "\x00\x00\x00\x00\x00\x00\x00\x00"
+               "\x00\x00\x00\x00\x00\x00\x00\x01",
+       .ipv6_dst = "\x00\x00\x00\x00\x00\x00\x00\x00"
+               "\x00\x00\x00\x00\x00\x00\x11\x11",
+       .vlan_tci = 0,
+       .eth_src = "\x00\x00\x00\x00\x00\x00",
+       .eth_dst = "\xff\xff\xff\xff\xff\xff",
+};
+
 /* Forward function declarations */
 static void map_port_queue_stats_mapping_registers(portid_t pi,
                                                   struct rte_port *port);
@@ -444,6 +475,8 @@ set_default_fwd_lcores_config(void)
 
        nb_lc = 0;
        for (i = 0; i < RTE_MAX_LCORE; i++) {
+               if (!rte_lcore_is_enabled(i))
+                       continue;
                sock_num = rte_lcore_to_socket_id(i);
                if (new_socket_id(sock_num)) {
                        if (num_sockets >= RTE_MAX_NUMA_NODES) {
@@ -453,8 +486,6 @@ set_default_fwd_lcores_config(void)
                        }
                        socket_ids[num_sockets++] = sock_num;
                }
-               if (!rte_lcore_is_enabled(i))
-                       continue;
                if (i == rte_get_master_lcore())
                        continue;
                fwd_lcores_cpuids[nb_lc++] = i;
@@ -671,6 +702,7 @@ init_config(void)
        uint8_t port_per_socket[RTE_MAX_NUMA_NODES];
        struct rte_gro_param gro_param;
        uint32_t gso_types;
+       int k;
 
        memset(port_per_socket,0,RTE_MAX_NUMA_NODES);
 
@@ -705,6 +737,7 @@ init_config(void)
                port->dev_conf.txmode = tx_mode;
                port->dev_conf.rxmode = rx_mode;
                rte_eth_dev_info_get(pid, &port->dev_info);
+
                if (!(port->dev_info.tx_offload_capa &
                      DEV_TX_OFFLOAD_MBUF_FAST_FREE))
                        port->dev_conf.txmode.offloads &=
@@ -722,6 +755,15 @@ init_config(void)
                        }
                }
 
+               /* Apply Rx offloads configuration */
+               for (k = 0; k < port->dev_info.max_rx_queues; k++)
+                       port->rx_conf[k].offloads =
+                               port->dev_conf.rxmode.offloads;
+               /* Apply Tx offloads configuration */
+               for (k = 0; k < port->dev_info.max_tx_queues; k++)
+                       port->tx_conf[k].offloads =
+                               port->dev_conf.txmode.offloads;
+
                /* set flag to initialize port/queue */
                port->need_reconfig = 1;
                port->need_reconfig_queues = 1;
@@ -762,7 +804,7 @@ init_config(void)
        init_port_config();
 
        gso_types = DEV_TX_OFFLOAD_TCP_TSO | DEV_TX_OFFLOAD_VXLAN_TNL_TSO |
-               DEV_TX_OFFLOAD_GRE_TNL_TSO;
+               DEV_TX_OFFLOAD_GRE_TNL_TSO | DEV_TX_OFFLOAD_UDP_TSO;
        /*
         * Records which Mbuf pool to use by each logical core, if needed.
         */
@@ -801,6 +843,19 @@ init_config(void)
                                        "rte_gro_ctx_create() failed\n");
                }
        }
+
+#if defined RTE_LIBRTE_PMD_SOFTNIC
+       if (strcmp(cur_fwd_eng->fwd_mode_name, "softnic") == 0) {
+               RTE_ETH_FOREACH_DEV(pid) {
+                       port = &ports[pid];
+                       const char *driver = port->dev_info.driver_name;
+
+                       if (strcmp(driver, "net_softnic") == 0)
+                               port->softport.fwd_lcore_arg = fwd_lcores;
+               }
+       }
+#endif
+
 }
 
 
@@ -886,18 +941,23 @@ init_fwd_streams(void)
 
        /* init new */
        nb_fwd_streams = nb_fwd_streams_new;
-       fwd_streams = rte_zmalloc("testpmd: fwd_streams",
-               sizeof(struct fwd_stream *) * nb_fwd_streams, RTE_CACHE_LINE_SIZE);
-       if (fwd_streams == NULL)
-               rte_exit(EXIT_FAILURE, "rte_zmalloc(%d (struct fwd_stream *)) "
-                                               "failed\n", nb_fwd_streams);
+       if (nb_fwd_streams) {
+               fwd_streams = rte_zmalloc("testpmd: fwd_streams",
+                       sizeof(struct fwd_stream *) * nb_fwd_streams,
+                       RTE_CACHE_LINE_SIZE);
+               if (fwd_streams == NULL)
+                       rte_exit(EXIT_FAILURE, "rte_zmalloc(%d"
+                                " (struct fwd_stream *)) failed\n",
+                                nb_fwd_streams);
 
-       for (sm_id = 0; sm_id < nb_fwd_streams; sm_id++) {
-               fwd_streams[sm_id] = rte_zmalloc("testpmd: struct fwd_stream",
-                               sizeof(struct fwd_stream), RTE_CACHE_LINE_SIZE);
-               if (fwd_streams[sm_id] == NULL)
-                       rte_exit(EXIT_FAILURE, "rte_zmalloc(struct fwd_stream)"
-                                                               " failed\n");
+               for (sm_id = 0; sm_id < nb_fwd_streams; sm_id++) {
+                       fwd_streams[sm_id] = rte_zmalloc("testpmd:"
+                               " struct fwd_stream", sizeof(struct fwd_stream),
+                               RTE_CACHE_LINE_SIZE);
+                       if (fwd_streams[sm_id] == NULL)
+                               rte_exit(EXIT_FAILURE, "rte_zmalloc"
+                                        "(struct fwd_stream) failed\n");
+               }
        }
 
        return 0;
@@ -931,6 +991,9 @@ pkt_burst_stats_display(const char *rx_tx, struct pkt_burst_stats *pbs)
                        pktnb_stats[1] = pktnb_stats[0];
                        burst_stats[0] = nb_burst;
                        pktnb_stats[0] = nb_pkt;
+               } else if (nb_burst > burst_stats[1]) {
+                       burst_stats[1] = nb_burst;
+                       pktnb_stats[1] = nb_pkt;
                }
        }
        if (total_burst == 0)
@@ -1125,8 +1188,9 @@ run_pkt_fwd_on_lcore(struct fwd_lcore *fc, packet_fwd_t pkt_fwd)
        uint64_t tics_per_1sec;
        uint64_t tics_datum;
        uint64_t tics_current;
-       uint16_t idx_port;
+       uint16_t i, cnt_ports;
 
+       cnt_ports = nb_ports;
        tics_datum = rte_rdtsc();
        tics_per_1sec = rte_get_timer_hz();
 #endif
@@ -1141,9 +1205,9 @@ run_pkt_fwd_on_lcore(struct fwd_lcore *fc, packet_fwd_t pkt_fwd)
                        tics_current = rte_rdtsc();
                        if (tics_current - tics_datum >= tics_per_1sec) {
                                /* Periodic bitrate calculation */
-                               RTE_ETH_FOREACH_DEV(idx_port)
+                               for (i = 0; i < cnt_ports; i++)
                                        rte_stats_bitrate_calc(bitrate_data,
-                                               idx_port);
+                                               ports_ids[i]);
                                tics_datum = tics_current;
                        }
                }
@@ -1213,6 +1277,31 @@ launch_packet_forwarding(lcore_function_t *pkt_fwd_on_lcore)
        }
 }
 
+/*
+ * Update the forward ports list.
+ */
+void
+update_fwd_ports(portid_t new_pid)
+{
+       unsigned int i;
+       unsigned int new_nb_fwd_ports = 0;
+       int move = 0;
+
+       for (i = 0; i < nb_fwd_ports; ++i) {
+               if (port_id_is_invalid(fwd_ports_ids[i], DISABLED_WARN))
+                       move = 1;
+               else if (move)
+                       fwd_ports_ids[new_nb_fwd_ports++] = fwd_ports_ids[i];
+               else
+                       new_nb_fwd_ports++;
+       }
+       if (new_pid < RTE_MAX_ETHPORTS)
+               fwd_ports_ids[new_nb_fwd_ports++] = new_pid;
+
+       nb_fwd_ports = new_nb_fwd_ports;
+       nb_cfg_ports = new_nb_fwd_ports;
+}
+
 /*
  * Launch packet forwarding configuration.
  */
@@ -1248,10 +1337,6 @@ start_packet_forwarding(int with_tx_first)
                return;
        }
 
-       if (init_fwd_streams() < 0) {
-               printf("Fail from init_fwd_streams()\n");
-               return;
-       }
 
        if(dcb_test) {
                for (i = 0; i < nb_fwd_ports; i++) {
@@ -1271,10 +1356,11 @@ start_packet_forwarding(int with_tx_first)
        }
        test_done = 0;
 
+       fwd_config_setup();
+
        if(!no_flush_rx)
                flush_fwd_rx_queues();
 
-       fwd_config_setup();
        pkt_fwd_config_display(&cur_fwd_config);
        rxtx_config_display();
 
@@ -1600,11 +1686,6 @@ start_port(portid_t pid)
                        port->need_reconfig_queues = 0;
                        /* setup tx queues */
                        for (qi = 0; qi < nb_txq; qi++) {
-                               port->tx_conf[qi].txq_flags =
-                                       ETH_TXQ_FLAGS_IGNORE;
-                               /* Apply Tx offloads configuration */
-                               port->tx_conf[qi].offloads =
-                                       port->dev_conf.txmode.offloads;
                                if ((numa_support) &&
                                        (txring_numa[pi] != NUMA_NO_CONFIG))
                                        diag = rte_eth_tx_queue_setup(pi, qi,
@@ -1633,9 +1714,6 @@ start_port(portid_t pid)
                                return -1;
                        }
                        for (qi = 0; qi < nb_rxq; qi++) {
-                               /* Apply Rx offloads configuration */
-                               port->rx_conf[qi].offloads =
-                                       port->dev_conf.rxmode.offloads;
                                /* setup rx queues */
                                if ((numa_support) &&
                                        (rxring_numa[pi] != NUMA_NO_CONFIG)) {
@@ -1650,7 +1728,7 @@ start_port(portid_t pid)
                                        }
 
                                        diag = rte_eth_rx_queue_setup(pi, qi,
-                                            port->nb_rx_desc[pi],
+                                            port->nb_rx_desc[qi],
                                             rxring_numa[pi],
                                             &(port->rx_conf[qi]),
                                             mp);
@@ -1665,7 +1743,7 @@ start_port(portid_t pid)
                                                return -1;
                                        }
                                        diag = rte_eth_rx_queue_setup(pi, qi,
-                                            port->nb_rx_desc[pi],
+                                            port->nb_rx_desc[qi],
                                             port->socket_id,
                                             &(port->rx_conf[qi]),
                                             mp);
@@ -1932,10 +2010,13 @@ attach_port(char *identifier)
        reconfig(pi, socket_id);
        rte_eth_promiscuous_enable(pi);
 
+       ports_ids[nb_ports] = pi;
        nb_ports = rte_eth_dev_count_avail();
 
        ports[pi].port_status = RTE_PORT_STOPPED;
 
+       update_fwd_ports(pi);
+
        printf("Port %d is attached. Now total ports is %d\n", pi, nb_ports);
        printf("Done\n");
 }
@@ -1944,6 +2025,7 @@ void
 detach_port(portid_t port_id)
 {
        char name[RTE_ETH_NAME_MAX_LEN];
+       uint16_t i;
 
        printf("Detaching a port...\n");
 
@@ -1956,14 +2038,23 @@ detach_port(portid_t port_id)
                port_flow_flush(port_id);
 
        if (rte_eth_dev_detach(port_id, name)) {
-               TESTPMD_LOG(ERR, "Failed to detach port '%s'\n", name);
+               TESTPMD_LOG(ERR, "Failed to detach port %u\n", port_id);
                return;
        }
 
+       for (i = 0; i < nb_ports; i++) {
+               if (ports_ids[i] == port_id) {
+                       ports_ids[i] = ports_ids[nb_ports-1];
+                       ports_ids[nb_ports-1] = 0;
+                       break;
+               }
+       }
        nb_ports = rte_eth_dev_count_avail();
 
-       printf("Port '%s' is detached. Now total ports is %d\n",
-                       name, nb_ports);
+       update_fwd_ports(RTE_MAX_ETHPORTS);
+
+       printf("Port %u is detached. Now total ports is %d\n",
+                       port_id, nb_ports);
        printf("Done\n");
        return;
 }
@@ -1971,6 +2062,7 @@ detach_port(portid_t port_id)
 void
 pmd_test_exit(void)
 {
+       struct rte_device *device;
        portid_t pt_id;
        int ret;
 
@@ -1984,6 +2076,18 @@ pmd_test_exit(void)
                        fflush(stdout);
                        stop_port(pt_id);
                        close_port(pt_id);
+
+                       /*
+                        * This is a workaround to fix a virtio-user issue that
+                        * requires to call clean-up routine to remove existing
+                        * socket.
+                        * This workaround valid only for testpmd, needs a fix
+                        * valid for all applications.
+                        * TODO: Implement proper resource cleanup
+                        */
+                       device = rte_eth_devices[pt_id].device;
+                       if (device && !strcmp(device->driver->name, "net_virtio_user"))
+                               detach_port(pt_id);
                }
        }
 
@@ -2069,18 +2173,23 @@ check_all_ports_link_status(uint32_t port_mask)
 static void
 rmv_event_callback(void *arg)
 {
-       struct rte_eth_dev *dev;
+       int need_to_start = 0;
+       int org_no_link_check = no_link_check;
        portid_t port_id = (intptr_t)arg;
 
        RTE_ETH_VALID_PORTID_OR_RET(port_id);
-       dev = &rte_eth_devices[port_id];
 
+       if (!test_done && port_is_forwarding(port_id)) {
+               need_to_start = 1;
+               stop_packet_forwarding();
+       }
+       no_link_check = 1;
        stop_port(port_id);
+       no_link_check = org_no_link_check;
        close_port(port_id);
-       printf("removing device %s\n", dev->device->name);
-       if (rte_eal_dev_detach(dev->device))
-               TESTPMD_LOG(ERR, "Failed to detach device %s\n",
-                       dev->device->name);
+       detach_port(port_id);
+       if (need_to_start)
+               start_packet_forwarding(0);
 }
 
 /* This function is used by the interrupt thread */
@@ -2294,16 +2403,15 @@ init_port_config(void)
 {
        portid_t pid;
        struct rte_port *port;
-       struct rte_eth_dev_info dev_info;
 
        RTE_ETH_FOREACH_DEV(pid) {
                port = &ports[pid];
                port->dev_conf.fdir_conf = fdir_conf;
+               rte_eth_dev_info_get(pid, &port->dev_info);
                if (nb_rxq > 1) {
-                       rte_eth_dev_info_get(pid, &dev_info);
                        port->dev_conf.rx_adv_conf.rss_conf.rss_key = NULL;
                        port->dev_conf.rx_adv_conf.rss_conf.rss_hf =
-                               rss_hf & dev_info.flow_type_rss_offloads;
+                               rss_hf & port->dev_info.flow_type_rss_offloads;
                } else {
                        port->dev_conf.rx_adv_conf.rss_conf.rss_key = NULL;
                        port->dev_conf.rx_adv_conf.rss_conf.rss_hf = 0;
@@ -2333,17 +2441,6 @@ init_port_config(void)
                    (rte_eth_devices[pid].data->dev_flags &
                     RTE_ETH_DEV_INTR_RMV))
                        port->dev_conf.intr_conf.rmv = 1;
-
-#if defined RTE_LIBRTE_PMD_SOFTNIC && defined RTE_LIBRTE_SCHED
-               /* Detect softnic port */
-               if (!strcmp(port->dev_info.driver_name, "net_softnic")) {
-                       port->softnic_enable = 1;
-                       memset(&port->softport, 0, sizeof(struct softnic_port));
-
-                       if (!strcmp(cur_fwd_eng->fwd_mode_name, "tm"))
-                               port->softport.tm_flag = 1;
-               }
-#endif
        }
 }
 
@@ -2368,7 +2465,10 @@ uint8_t port_is_bonding_slave(portid_t slave_pid)
        struct rte_port *port;
 
        port = &ports[slave_pid];
-       return port->slave_flag;
+       if ((rte_eth_devices[slave_pid].data->dev_flags &
+           RTE_ETH_DEV_BONDED_SLAVE) || (port->slave_flag == 1))
+               return 1;
+       return 0;
 }
 
 const uint16_t vlan_tags[] = {
@@ -2379,12 +2479,14 @@ const uint16_t vlan_tags[] = {
 };
 
 static  int
-get_eth_dcb_conf(struct rte_eth_conf *eth_conf,
+get_eth_dcb_conf(portid_t pid, struct rte_eth_conf *eth_conf,
                 enum dcb_mode_enable dcb_mode,
                 enum rte_eth_nb_tcs num_tcs,
                 uint8_t pfc_en)
 {
        uint8_t i;
+       int32_t rc;
+       struct rte_eth_rss_conf rss_conf;
 
        /*
         * Builds up the correct configuration for dcb+vt based on the vlan tags array
@@ -2424,6 +2526,10 @@ get_eth_dcb_conf(struct rte_eth_conf *eth_conf,
                struct rte_eth_dcb_tx_conf *tx_conf =
                                &eth_conf->tx_adv_conf.dcb_tx_conf;
 
+               rc = rte_eth_dev_rss_hash_conf_get(pid, &rss_conf);
+               if (rc != 0)
+                       return rc;
+
                rx_conf->nb_tcs = num_tcs;
                tx_conf->nb_tcs = num_tcs;
 
@@ -2431,8 +2537,9 @@ get_eth_dcb_conf(struct rte_eth_conf *eth_conf,
                        rx_conf->dcb_tc[i] = i % num_tcs;
                        tx_conf->dcb_tc[i] = i % num_tcs;
                }
+
                eth_conf->rxmode.mq_mode = ETH_MQ_RX_DCB_RSS;
-               eth_conf->rx_adv_conf.rss_conf.rss_hf = rss_hf;
+               eth_conf->rx_adv_conf.rss_conf = rss_conf;
                eth_conf->txmode.mq_mode = ETH_MQ_TX_DCB;
        }
 
@@ -2466,17 +2573,13 @@ init_port_dcb_config(portid_t pid,
        port_conf.txmode = rte_port->dev_conf.txmode;
 
        /*set configuration of DCB in vt mode and DCB in non-vt mode*/
-       retval = get_eth_dcb_conf(&port_conf, dcb_mode, num_tcs, pfc_en);
+       retval = get_eth_dcb_conf(pid, &port_conf, dcb_mode, num_tcs, pfc_en);
        if (retval < 0)
                return retval;
        port_conf.rxmode.offloads |= DEV_RX_OFFLOAD_VLAN_FILTER;
 
-       /**
-        * Write the configuration into the device.
-        * Set the numbers of RX & TX queues to 0, so
-        * the RX & TX queues will not be setup.
-        */
-       rte_eth_dev_configure(pid, 0, 0, &port_conf);
+       /* re-configure the device . */
+       rte_eth_dev_configure(pid, nb_rxq, nb_rxq, &port_conf);
 
        rte_eth_dev_info_get(pid, &rte_port->dev_info);
 
@@ -2593,6 +2696,7 @@ main(int argc, char** argv)
 {
        int diag;
        portid_t port_id;
+       uint16_t count;
        int ret;
 
        signal(SIGINT, signal_handler);
@@ -2607,6 +2711,28 @@ main(int argc, char** argv)
                rte_panic("Cannot register log type");
        rte_log_set_level(testpmd_logtype, RTE_LOG_DEBUG);
 
+#ifdef RTE_LIBRTE_PDUMP
+       /* initialize packet capture framework */
+       rte_pdump_init(NULL);
+#endif
+
+       count = 0;
+       RTE_ETH_FOREACH_DEV(port_id) {
+               ports_ids[count] = port_id;
+               count++;
+       }
+       nb_ports = (portid_t) count;
+       if (nb_ports == 0)
+               TESTPMD_LOG(WARNING, "No probed ethernet devices\n");
+
+       /* allocate port structures, and init them */
+       init_port();
+
+       set_def_fwd_config();
+       if (nb_lcores == 0)
+               rte_panic("Empty set of forwarding logical cores - check the "
+                         "core mask supplied in the command parameters\n");
+
        /* Bitrate/latency stats disabled by default */
 #ifdef RTE_LIBRTE_BITRATE
        bitrate_enabled = 0;
@@ -2632,23 +2758,6 @@ main(int argc, char** argv)
                        strerror(errno));
        }
 
-#ifdef RTE_LIBRTE_PDUMP
-       /* initialize packet capture framework */
-       rte_pdump_init(NULL);
-#endif
-
-       nb_ports = (portid_t) rte_eth_dev_count_avail();
-       if (nb_ports == 0)
-               TESTPMD_LOG(WARNING, "No probed ethernet devices\n");
-
-       /* allocate port structures, and init them */
-       init_port();
-
-       set_def_fwd_config();
-       if (nb_lcores == 0)
-               rte_panic("Empty set of forwarding logical cores - check the "
-                         "core mask supplied in the command parameters\n");
-
        if (tx_first && interactive)
                rte_exit(EXIT_FAILURE, "--tx-first cannot be used on "
                                "interactive mode.\n");