1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2014 Intel Corporation
10 #include <rte_cycles.h>
11 #include <rte_ethdev.h>
12 #include <rte_byteorder.h>
13 #include <rte_atomic.h>
14 #include <rte_malloc.h>
15 #include "packet_burst_generator.h"
18 #define NB_ETHPORTS_USED (1)
19 #define NB_SOCKETS (2)
20 #define MEMPOOL_CACHE_SIZE 250
21 #define MAX_PKT_BURST (32)
22 #define RTE_TEST_RX_DESC_DEFAULT (1024)
23 #define RTE_TEST_TX_DESC_DEFAULT (1024)
24 #define RTE_PORT_ALL (~(uint16_t)0x0)
26 /* how long test would take at full line rate */
27 #define RTE_TEST_DURATION (2)
30 * RX and TX Prefetch, Host, and Write-back threshold values should be
31 * carefully set for optimal performance. Consult the network
32 * controller's datasheet and supporting DPDK documentation for guidance
33 * on how these parameters should be set.
35 #define RX_PTHRESH 8 /**< Default values of RX prefetch threshold reg. */
36 #define RX_HTHRESH 8 /**< Default values of RX host threshold reg. */
37 #define RX_WTHRESH 0 /**< Default values of RX write-back threshold reg. */
40 * These default values are optimized for use with the Intel(R) 82599 10 GbE
41 * Controller and the DPDK ixgbe PMD. Consider using other values for other
42 * network controllers and/or network drivers.
44 #define TX_PTHRESH 32 /**< Default values of TX prefetch threshold reg. */
45 #define TX_HTHRESH 0 /**< Default values of TX host threshold reg. */
46 #define TX_WTHRESH 0 /**< Default values of TX write-back threshold reg. */
48 #define MAX_TRAFFIC_BURST 2048
50 #define NB_MBUF RTE_MAX( \
51 (unsigned)(nb_ports*nb_rx_queue*nb_rxd + \
52 nb_ports*nb_lcores*MAX_PKT_BURST + \
53 nb_ports*nb_tx_queue*nb_txd + \
54 nb_lcores*MEMPOOL_CACHE_SIZE + \
55 nb_ports*MAX_TRAFFIC_BURST), \
59 static struct rte_mempool *mbufpool[NB_SOCKETS];
60 /* ethernet addresses of ports */
61 static struct rte_ether_addr ports_eth_addr[RTE_MAX_ETHPORTS];
63 static struct rte_eth_conf port_conf = {
65 .mq_mode = ETH_MQ_RX_NONE,
66 .max_rx_pkt_len = RTE_ETHER_MAX_LEN,
70 .mq_mode = ETH_MQ_TX_NONE,
72 .lpbk_mode = 1, /* enable loopback */
75 static struct rte_eth_rxconf rx_conf = {
77 .pthresh = RX_PTHRESH,
78 .hthresh = RX_HTHRESH,
79 .wthresh = RX_WTHRESH,
84 static struct rte_eth_txconf tx_conf = {
86 .pthresh = TX_PTHRESH,
87 .hthresh = TX_HTHRESH,
88 .wthresh = TX_WTHRESH,
90 .tx_free_thresh = 32, /* Use PMD default values */
91 .tx_rs_thresh = 32, /* Use PMD default values */
104 uint16_t portlist[RTE_MAX_ETHPORTS];
105 } __rte_cache_aligned;
107 struct lcore_conf lcore_conf[RTE_MAX_LCORE];
109 static uint64_t link_mbps;
117 static uint32_t sc_flag;
119 /* Check the link status of all ports in up to 3s, and print them finally */
121 check_all_ports_link_status(uint16_t port_num, uint32_t port_mask)
123 #define CHECK_INTERVAL 100 /* 100ms */
124 #define MAX_CHECK_TIME 30 /* 3s (30 * 100ms) in total */
126 uint8_t count, all_ports_up, print_flag = 0;
127 struct rte_eth_link link;
129 char link_status[RTE_ETH_LINK_MAX_STR_LEN];
131 printf("Checking link statuses...\n");
133 for (count = 0; count <= MAX_CHECK_TIME; count++) {
135 for (portid = 0; portid < port_num; portid++) {
136 if ((port_mask & (1 << portid)) == 0)
138 memset(&link, 0, sizeof(link));
139 ret = rte_eth_link_get_nowait(portid, &link);
143 printf("Port %u link get failed: %s\n",
144 portid, rte_strerror(-ret));
148 /* print link status if flag set */
149 if (print_flag == 1) {
150 if (link.link_status && link_mbps == 0)
151 link_mbps = link.link_speed;
153 rte_eth_link_to_str(link_status,
154 sizeof(link_status), &link);
155 printf("Port %d %s\n", portid, link_status);
158 /* clear all_ports_up flag if any link down */
159 if (link.link_status == ETH_LINK_DOWN) {
164 /* after finally printing all link status, get out */
168 if (all_ports_up == 0) {
170 rte_delay_ms(CHECK_INTERVAL);
173 /* set the print_flag if all ports up or timeout */
174 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1))
180 print_ethaddr(const char *name, const struct rte_ether_addr *eth_addr)
182 char buf[RTE_ETHER_ADDR_FMT_SIZE];
183 rte_ether_format_addr(buf, RTE_ETHER_ADDR_FMT_SIZE, eth_addr);
184 printf("%s%s", name, buf);
188 init_traffic(struct rte_mempool *mp,
189 struct rte_mbuf **pkts_burst, uint32_t burst_size)
191 struct rte_ether_hdr pkt_eth_hdr;
192 struct rte_ipv4_hdr pkt_ipv4_hdr;
193 struct rte_udp_hdr pkt_udp_hdr;
195 static uint8_t src_mac[] = { 0x00, 0xFF, 0xAA, 0xFF, 0xAA, 0xFF };
196 static uint8_t dst_mac[] = { 0x00, 0xAA, 0xFF, 0xAA, 0xFF, 0xAA };
199 initialize_eth_header(&pkt_eth_hdr,
200 (struct rte_ether_addr *)src_mac,
201 (struct rte_ether_addr *)dst_mac, RTE_ETHER_TYPE_IPV4, 0, 0);
203 pktlen = initialize_ipv4_header(&pkt_ipv4_hdr,
204 IPV4_ADDR(10, 0, 0, 1),
205 IPV4_ADDR(10, 0, 0, 2), 26);
206 printf("IPv4 pktlen %u\n", pktlen);
208 pktlen = initialize_udp_header(&pkt_udp_hdr, 0, 0, 18);
210 printf("UDP pktlen %u\n", pktlen);
212 return generate_packet_burst(mp, pkts_burst, &pkt_eth_hdr,
214 &pkt_udp_hdr, burst_size,
215 PACKET_BURST_GEN_PKT_LEN, 1);
223 for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
224 lcore_conf[lcore_id].socketid =
225 rte_lcore_to_socket_id(lcore_id);
226 if (rte_lcore_is_enabled(lcore_id) == 0) {
227 lcore_conf[lcore_id].status = LCORE_INVALID;
230 lcore_conf[lcore_id].status = LCORE_AVAIL;
236 init_mbufpool(unsigned nb_mbuf)
242 for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
243 if (rte_lcore_is_enabled(lcore_id) == 0)
246 socketid = rte_lcore_to_socket_id(lcore_id);
247 if (socketid >= NB_SOCKETS) {
248 rte_exit(EXIT_FAILURE,
249 "Socket %d of lcore %u is out of range %d\n",
250 socketid, lcore_id, NB_SOCKETS);
252 if (mbufpool[socketid] == NULL) {
253 snprintf(s, sizeof(s), "mbuf_pool_%d", socketid);
255 rte_pktmbuf_pool_create(s, nb_mbuf,
256 MEMPOOL_CACHE_SIZE, 0,
257 RTE_MBUF_DEFAULT_BUF_SIZE, socketid);
258 if (mbufpool[socketid] == NULL)
259 rte_exit(EXIT_FAILURE,
260 "Cannot init mbuf pool on socket %d\n",
263 printf("Allocated mbuf pool on socket %d\n",
271 alloc_lcore(uint16_t socketid)
275 for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
276 if (LCORE_AVAIL != lcore_conf[lcore_id].status ||
277 lcore_conf[lcore_id].socketid != socketid ||
278 lcore_id == rte_get_main_lcore())
280 lcore_conf[lcore_id].status = LCORE_USED;
281 lcore_conf[lcore_id].nb_ports = 0;
288 static volatile uint64_t stop;
289 static uint64_t count;
290 static uint64_t drop;
291 static uint64_t idle;
302 stats_display(uint16_t port_id)
304 struct rte_eth_stats stats;
305 rte_eth_stats_get(port_id, &stats);
307 printf(" RX-packets: %-10"PRIu64" RX-missed: %-10"PRIu64" RX-bytes: "
309 stats.ipackets, stats.imissed, stats.ibytes);
310 printf(" RX-errors: %-10"PRIu64" RX-nombuf: %-10"PRIu64"\n",
311 stats.ierrors, stats.rx_nombuf);
312 printf(" TX-packets: %-10"PRIu64" TX-errors: %-10"PRIu64" TX-bytes: "
314 stats.opackets, stats.oerrors, stats.obytes);
318 signal_handler(int signum)
320 /* USR1 signal, stop testing */
321 if (signum == SIGUSR1) {
322 printf("Force Stop!\n");
326 /* USR2 signal, print stats */
327 if (signum == SIGUSR2)
331 struct rte_mbuf **tx_burst;
333 uint64_t (*do_measure)(struct lcore_conf *conf,
334 struct rte_mbuf *pkts_burst[],
335 uint64_t total_pkts);
338 measure_rxtx(struct lcore_conf *conf,
339 struct rte_mbuf *pkts_burst[],
342 unsigned i, portid, nb_rx, nb_tx;
343 uint64_t prev_tsc, cur_tsc;
345 prev_tsc = rte_rdtsc();
347 while (likely(!stop)) {
348 for (i = 0; i < conf->nb_ports; i++) {
349 portid = conf->portlist[i];
350 nb_rx = rte_eth_rx_burst(portid, 0,
351 pkts_burst, MAX_PKT_BURST);
352 if (unlikely(nb_rx == 0)) {
358 nb_tx = rte_eth_tx_burst(portid, 0, pkts_burst, nb_rx);
359 if (unlikely(nb_tx < nb_rx)) {
360 drop += (nb_rx - nb_tx);
362 rte_pktmbuf_free(pkts_burst[nb_tx]);
363 } while (++nb_tx < nb_rx);
366 if (unlikely(count >= total_pkts))
370 cur_tsc = rte_rdtsc();
372 return cur_tsc - prev_tsc;
376 measure_rxonly(struct lcore_conf *conf,
377 struct rte_mbuf *pkts_burst[],
380 unsigned i, portid, nb_rx, nb_tx;
381 uint64_t diff_tsc, cur_tsc;
384 while (likely(!stop)) {
385 for (i = 0; i < conf->nb_ports; i++) {
386 portid = conf->portlist[i];
388 cur_tsc = rte_rdtsc();
389 nb_rx = rte_eth_rx_burst(portid, 0,
390 pkts_burst, MAX_PKT_BURST);
391 if (unlikely(nb_rx == 0)) {
395 diff_tsc += rte_rdtsc() - cur_tsc;
398 nb_tx = rte_eth_tx_burst(portid, 0, pkts_burst, nb_rx);
399 if (unlikely(nb_tx < nb_rx)) {
400 drop += (nb_rx - nb_tx);
402 rte_pktmbuf_free(pkts_burst[nb_tx]);
403 } while (++nb_tx < nb_rx);
406 if (unlikely(count >= total_pkts))
414 measure_txonly(struct lcore_conf *conf,
415 struct rte_mbuf *pkts_burst[],
418 unsigned i, portid, nb_rx, nb_tx;
419 uint64_t diff_tsc, cur_tsc;
421 printf("do tx measure\n");
423 while (likely(!stop)) {
424 for (i = 0; i < conf->nb_ports; i++) {
425 portid = conf->portlist[i];
426 nb_rx = rte_eth_rx_burst(portid, 0,
427 pkts_burst, MAX_PKT_BURST);
428 if (unlikely(nb_rx == 0)) {
435 cur_tsc = rte_rdtsc();
436 nb_tx = rte_eth_tx_burst(portid, 0, pkts_burst, nb_rx);
437 if (unlikely(nb_tx < nb_rx)) {
438 drop += (nb_rx - nb_tx);
440 rte_pktmbuf_free(pkts_burst[nb_tx]);
441 } while (++nb_tx < nb_rx);
443 diff_tsc += rte_rdtsc() - cur_tsc;
445 if (unlikely(count >= total_pkts))
452 /* main processing loop */
454 main_loop(__rte_unused void *args)
456 #define PACKET_SIZE 64
458 #define MAC_PREAMBLE 8
459 struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
461 unsigned i, portid, nb_rx = 0, nb_tx = 0;
462 struct lcore_conf *conf;
465 uint64_t packets_per_second, total_packets;
467 lcore_id = rte_lcore_id();
468 conf = &lcore_conf[lcore_id];
469 if (conf->status != LCORE_USED)
472 pkt_per_port = MAX_TRAFFIC_BURST;
475 for (i = 0; i < conf->nb_ports; i++) {
476 int num = pkt_per_port;
477 portid = conf->portlist[i];
478 printf("inject %d packet to port %d\n", num, portid);
480 nb_tx = RTE_MIN(MAX_PKT_BURST, num);
481 nb_tx = rte_eth_tx_burst(portid, 0,
482 &tx_burst[idx], nb_tx);
487 printf("Total packets inject to prime ports = %u\n", idx);
489 packets_per_second = (link_mbps * 1000 * 1000) /
490 ((PACKET_SIZE + FRAME_GAP + MAC_PREAMBLE) * CHAR_BIT);
491 printf("Each port will do %"PRIu64" packets per second\n",
494 total_packets = RTE_TEST_DURATION * conf->nb_ports * packets_per_second;
495 printf("Test will stop after at least %"PRIu64" packets received\n",
498 diff_tsc = do_measure(conf, pkts_burst, total_packets);
500 for (i = 0; i < conf->nb_ports; i++) {
501 portid = conf->portlist[i];
503 uint64_t timeout = 10000;
505 nb_rx = rte_eth_rx_burst(portid, 0,
506 pkts_burst, MAX_PKT_BURST);
508 while (nb_tx < nb_rx)
509 rte_pktmbuf_free(pkts_burst[nb_tx++]);
512 if (unlikely(nb_rx == 0))
514 } while (nb_free != pkt_per_port && timeout != 0);
515 printf("free %d (expected %d) mbuf left in port %u\n", nb_free,
516 pkt_per_port, portid);
522 printf("%"PRIu64" packet, %"PRIu64" drop, %"PRIu64" idle\n",
524 printf("Result: %"PRIu64" cycles per packet\n", diff_tsc / count);
529 static rte_atomic64_t start;
532 poll_burst(void *args)
534 #define MAX_IDLE (10000)
536 struct rte_mbuf **pkts_burst;
537 uint64_t diff_tsc, cur_tsc;
538 uint16_t next[RTE_MAX_ETHPORTS];
539 struct lcore_conf *conf;
540 uint32_t pkt_per_port = *((uint32_t *)args);
541 unsigned i, portid, nb_rx = 0;
543 uint64_t timeout = MAX_IDLE;
544 int num[RTE_MAX_ETHPORTS];
546 lcore_id = rte_lcore_id();
547 conf = &lcore_conf[lcore_id];
548 if (conf->status != LCORE_USED)
551 total = pkt_per_port * conf->nb_ports;
552 printf("start to receive total expect %"PRIu64"\n", total);
554 pkts_burst = (struct rte_mbuf **)
555 rte_calloc_socket("poll_burst",
556 total, sizeof(void *),
557 RTE_CACHE_LINE_SIZE, conf->socketid);
561 for (i = 0; i < conf->nb_ports; i++) {
562 portid = conf->portlist[i];
563 next[portid] = i * pkt_per_port;
564 num[portid] = pkt_per_port;
567 while (!rte_atomic64_read(&start))
570 cur_tsc = rte_rdtsc();
572 for (i = 0; i < conf->nb_ports; i++) {
573 portid = conf->portlist[i];
574 nb_rx = rte_eth_rx_burst(portid, 0,
575 &pkts_burst[next[portid]],
576 RTE_MIN(MAX_PKT_BURST, num[portid]));
577 if (unlikely(nb_rx == 0)) {
579 if (unlikely(timeout == 0))
583 next[portid] += nb_rx;
584 num[portid] -= nb_rx;
589 diff_tsc = rte_rdtsc() - cur_tsc;
591 printf("%"PRIu64" packets lost, IDLE %"PRIu64" times\n",
592 total, MAX_IDLE - timeout);
594 total = pkt_per_port * conf->nb_ports - total;
595 for (i = 0; i < total; i++)
596 rte_pktmbuf_free(pkts_burst[i]);
598 rte_free(pkts_burst);
601 return diff_tsc / total;
607 exec_burst(uint32_t flags, int lcore)
609 unsigned int portid, nb_tx = 0;
610 struct lcore_conf *conf;
611 uint32_t pkt_per_port;
615 conf = &lcore_conf[lcore];
617 pkt_per_port = MAX_TRAFFIC_BURST;
618 num = pkt_per_port * conf->nb_ports;
620 rte_atomic64_init(&start);
622 /* start polling thread, but not actually poll yet */
623 rte_eal_remote_launch(poll_burst,
624 (void *)&pkt_per_port, lcore);
626 /* Only when polling first */
627 if (flags == SC_BURST_POLL_FIRST)
628 rte_atomic64_set(&start, 1);
633 nb_tx = RTE_MIN(MAX_PKT_BURST, num);
634 portid = conf->portlist[i];
635 nb_tx = rte_eth_tx_burst(portid, 0, &tx_burst[idx], nb_tx);
638 i = (i >= conf->nb_ports - 1) ? 0 : (i + 1);
643 /* only when polling second */
644 if (flags == SC_BURST_XMIT_FIRST)
645 rte_atomic64_set(&start, 1);
647 /* wait for polling finished */
648 diff_tsc = rte_eal_wait_lcore(lcore);
650 printf("exec_burst: Failed to measure cycles per packet\n");
654 printf("Result: %d cycles per packet\n", diff_tsc);
662 uint16_t nb_ports, num, nb_lcores, worker_id = (uint16_t)-1;
663 uint16_t nb_rxd = MAX_TRAFFIC_BURST;
664 uint16_t nb_txd = MAX_TRAFFIC_BURST;
666 uint16_t nb_rx_queue = 1, nb_tx_queue = 1;
670 printf("Start PMD RXTX cycles cost test.\n");
672 signal(SIGUSR1, signal_handler);
673 signal(SIGUSR2, signal_handler);
675 nb_ports = rte_eth_dev_count_avail();
676 if (nb_ports < NB_ETHPORTS_USED) {
677 printf("At least %u port(s) used for perf. test\n",
682 nb_lcores = rte_lcore_count();
684 memset(lcore_conf, 0, sizeof(lcore_conf));
687 init_mbufpool(NB_MBUF);
689 if (sc_flag == SC_CONTINUOUS) {
690 nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
691 nb_txd = RTE_TEST_TX_DESC_DEFAULT;
693 printf("CONFIG RXD=%d TXD=%d\n", nb_rxd, nb_txd);
697 RTE_ETH_FOREACH_DEV(portid) {
698 if (socketid == -1) {
699 socketid = rte_eth_dev_socket_id(portid);
700 worker_id = alloc_lcore(socketid);
701 if (worker_id == (uint16_t)-1) {
702 printf("No avail lcore to run test\n");
705 printf("Performance test runs on lcore %u socket %u\n",
706 worker_id, socketid);
709 if (socketid != rte_eth_dev_socket_id(portid)) {
710 printf("Skip port %d\n", portid);
715 ret = rte_eth_dev_configure(portid, nb_rx_queue,
716 nb_tx_queue, &port_conf);
718 rte_exit(EXIT_FAILURE,
719 "Cannot configure device: err=%d, port=%d\n",
722 ret = rte_eth_macaddr_get(portid, &ports_eth_addr[portid]);
724 rte_exit(EXIT_FAILURE,
725 "Cannot get mac address: err=%d, port=%d\n",
728 printf("Port %u ", portid);
729 print_ethaddr("Address:", &ports_eth_addr[portid]);
733 ret = rte_eth_tx_queue_setup(portid, 0, nb_txd,
736 rte_exit(EXIT_FAILURE,
737 "rte_eth_tx_queue_setup: err=%d, "
738 "port=%d\n", ret, portid);
741 ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
745 rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup: err=%d,"
746 "port=%d\n", ret, portid);
750 ret = rte_eth_dev_start(portid);
752 rte_exit(EXIT_FAILURE,
753 "rte_eth_dev_start: err=%d, port=%d\n",
756 /* always eanble promiscuous */
757 ret = rte_eth_promiscuous_enable(portid);
759 rte_exit(EXIT_FAILURE,
760 "rte_eth_promiscuous_enable: err=%s, port=%d\n",
761 rte_strerror(-ret), portid);
763 lcore_conf[worker_id].portlist[num++] = portid;
764 lcore_conf[worker_id].nb_ports++;
766 check_all_ports_link_status(nb_ports, RTE_PORT_ALL);
768 if (tx_burst == NULL) {
769 tx_burst = (struct rte_mbuf **)
770 rte_calloc_socket("tx_buff",
771 MAX_TRAFFIC_BURST * nb_ports,
773 RTE_CACHE_LINE_SIZE, socketid);
778 init_traffic(mbufpool[socketid],
779 tx_burst, MAX_TRAFFIC_BURST * nb_ports);
781 printf("Generate %d packets @socket %d\n",
782 MAX_TRAFFIC_BURST * nb_ports, socketid);
784 if (sc_flag == SC_CONTINUOUS) {
785 /* do both rxtx by default */
786 if (NULL == do_measure)
787 do_measure = measure_rxtx;
789 rte_eal_remote_launch(main_loop, NULL, worker_id);
791 if (rte_eal_wait_lcore(worker_id) < 0)
793 } else if (sc_flag == SC_BURST_POLL_FIRST ||
794 sc_flag == SC_BURST_XMIT_FIRST)
795 if (exec_burst(sc_flag, worker_id) < 0)
799 RTE_ETH_FOREACH_DEV(portid) {
800 if (socketid != rte_eth_dev_socket_id(portid))
803 ret = rte_eth_dev_stop(portid);
805 printf("rte_eth_dev_stop: err=%s, port=%u\n",
806 rte_strerror(-ret), portid);
813 test_set_rxtx_conf(cmdline_fixed_string_t mode)
815 printf("mode switch to %s\n", mode);
817 if (!strcmp(mode, "vector")) {
819 tx_conf.tx_rs_thresh = 32;
820 tx_conf.tx_free_thresh = 32;
822 } else if (!strcmp(mode, "scalar")) {
823 /* bulk alloc rx, full-featured tx */
824 tx_conf.tx_rs_thresh = 32;
825 tx_conf.tx_free_thresh = 32;
826 port_conf.rxmode.offloads |= DEV_RX_OFFLOAD_CHECKSUM;
828 } else if (!strcmp(mode, "hybrid")) {
829 /* bulk alloc rx, vector tx
830 * when vec macro not define,
831 * using the same rx/tx as scalar
833 tx_conf.tx_rs_thresh = 32;
834 tx_conf.tx_free_thresh = 32;
835 port_conf.rxmode.offloads |= DEV_RX_OFFLOAD_CHECKSUM;
837 } else if (!strcmp(mode, "full")) {
838 /* full feature rx,tx pair */
839 tx_conf.tx_rs_thresh = 32;
840 tx_conf.tx_free_thresh = 32;
841 port_conf.rxmode.offloads |= DEV_RX_OFFLOAD_SCATTER;
849 test_set_rxtx_anchor(cmdline_fixed_string_t type)
851 printf("type switch to %s\n", type);
853 if (!strcmp(type, "rxtx")) {
854 do_measure = measure_rxtx;
856 } else if (!strcmp(type, "rxonly")) {
857 do_measure = measure_rxonly;
859 } else if (!strcmp(type, "txonly")) {
860 do_measure = measure_txonly;
868 test_set_rxtx_sc(cmdline_fixed_string_t type)
870 printf("stream control switch to %s\n", type);
872 if (!strcmp(type, "continuous")) {
873 sc_flag = SC_CONTINUOUS;
875 } else if (!strcmp(type, "poll_before_xmit")) {
876 sc_flag = SC_BURST_POLL_FIRST;
878 } else if (!strcmp(type, "poll_after_xmit")) {
879 sc_flag = SC_BURST_XMIT_FIRST;
886 REGISTER_TEST_COMMAND(pmd_perf_autotest, test_pmd_perf);