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40 #include <rte_ethdev.h>
41 #include <rte_cycles.h>
42 #include <rte_malloc.h>
43 #include <rte_debug.h>
44 #include <rte_prefetch.h>
45 #include <rte_distributor.h>
47 #define RX_RING_SIZE 256
48 #define TX_RING_SIZE 512
49 #define NUM_MBUFS ((64*1024)-1)
50 #define MBUF_CACHE_SIZE 250
52 #define SCHED_RX_RING_SZ 8192
53 #define SCHED_TX_RING_SZ 65536
54 #define RTE_RING_SZ 1024
56 #define RTE_LOGTYPE_DISTRAPP RTE_LOGTYPE_USER1
58 #define ANSI_COLOR_RED "\x1b[31m"
59 #define ANSI_COLOR_RESET "\x1b[0m"
61 /* mask of enabled ports */
62 static uint32_t enabled_port_mask;
63 volatile uint8_t quit_signal;
64 volatile uint8_t quit_signal_rx;
65 volatile uint8_t quit_signal_dist;
66 volatile uint8_t quit_signal_work;
68 static volatile struct app_stats {
71 uint64_t returned_pkts;
72 uint64_t enqueued_pkts;
73 uint64_t enqdrop_pkts;
74 } rx __rte_cache_aligned;
75 int pad1 __rte_cache_aligned;
81 uint64_t enqdrop_pkts;
82 } dist __rte_cache_aligned;
83 int pad2 __rte_cache_aligned;
86 uint64_t dequeue_pkts;
88 uint64_t enqdrop_pkts;
89 } tx __rte_cache_aligned;
90 int pad3 __rte_cache_aligned;
92 uint64_t worker_pkts[64] __rte_cache_aligned;
94 int pad4 __rte_cache_aligned;
96 uint64_t worker_bursts[64][8] __rte_cache_aligned;
98 int pad5 __rte_cache_aligned;
100 uint64_t port_rx_pkts[64] __rte_cache_aligned;
101 uint64_t port_tx_pkts[64] __rte_cache_aligned;
104 struct app_stats prev_app_stats;
106 static const struct rte_eth_conf port_conf_default = {
108 .mq_mode = ETH_MQ_RX_RSS,
109 .max_rx_pkt_len = ETHER_MAX_LEN,
112 .mq_mode = ETH_MQ_TX_NONE,
116 .rss_hf = ETH_RSS_IP | ETH_RSS_UDP |
117 ETH_RSS_TCP | ETH_RSS_SCTP,
122 struct output_buffer {
124 struct rte_mbuf *mbufs[BURST_SIZE];
127 static void print_stats(void);
130 * Initialises a given port using global settings and with the rx buffers
131 * coming from the mbuf_pool passed as parameter
134 port_init(uint8_t port, struct rte_mempool *mbuf_pool)
136 struct rte_eth_conf port_conf = port_conf_default;
137 const uint16_t rxRings = 1, txRings = rte_lcore_count() - 1;
141 if (port >= rte_eth_dev_count())
144 retval = rte_eth_dev_configure(port, rxRings, txRings, &port_conf);
148 for (q = 0; q < rxRings; q++) {
149 retval = rte_eth_rx_queue_setup(port, q, RX_RING_SIZE,
150 rte_eth_dev_socket_id(port),
156 for (q = 0; q < txRings; q++) {
157 retval = rte_eth_tx_queue_setup(port, q, TX_RING_SIZE,
158 rte_eth_dev_socket_id(port),
164 retval = rte_eth_dev_start(port);
168 struct rte_eth_link link;
169 rte_eth_link_get_nowait(port, &link);
170 while (!link.link_status) {
171 printf("Waiting for Link up on port %"PRIu8"\n", port);
173 rte_eth_link_get_nowait(port, &link);
176 if (!link.link_status) {
177 printf("Link down on port %"PRIu8"\n", port);
181 struct ether_addr addr;
182 rte_eth_macaddr_get(port, &addr);
183 printf("Port %u MAC: %02"PRIx8" %02"PRIx8" %02"PRIx8
184 " %02"PRIx8" %02"PRIx8" %02"PRIx8"\n",
186 addr.addr_bytes[0], addr.addr_bytes[1],
187 addr.addr_bytes[2], addr.addr_bytes[3],
188 addr.addr_bytes[4], addr.addr_bytes[5]);
190 rte_eth_promiscuous_enable(port);
195 struct lcore_params {
197 struct rte_distributor *d;
198 struct rte_ring *rx_dist_ring;
199 struct rte_ring *dist_tx_ring;
200 struct rte_mempool *mem_pool;
204 lcore_rx(struct lcore_params *p)
206 const uint8_t nb_ports = rte_eth_dev_count();
207 const int socket_id = rte_socket_id();
210 for (port = 0; port < nb_ports; port++) {
211 /* skip ports that are not enabled */
212 if ((enabled_port_mask & (1 << port)) == 0)
215 if (rte_eth_dev_socket_id(port) > 0 &&
216 rte_eth_dev_socket_id(port) != socket_id)
217 printf("WARNING, port %u is on remote NUMA node to "
218 "RX thread.\n\tPerformance will not "
219 "be optimal.\n", port);
222 printf("\nCore %u doing packet RX.\n", rte_lcore_id());
224 while (!quit_signal_rx) {
226 /* skip ports that are not enabled */
227 if ((enabled_port_mask & (1 << port)) == 0) {
228 if (++port == nb_ports)
232 struct rte_mbuf *bufs[BURST_SIZE*2];
233 const uint16_t nb_rx = rte_eth_rx_burst(port, 0, bufs,
235 if (unlikely(nb_rx == 0)) {
236 if (++port == nb_ports)
240 app_stats.rx.rx_pkts += nb_rx;
243 * You can run the distributor on the rx core with this code. Returned
244 * packets are then send straight to the tx core.
247 rte_distributor_process(d, bufs, nb_rx);
248 const uint16_t nb_ret = rte_distributor_returned_pktsd,
251 app_stats.rx.returned_pkts += nb_ret;
252 if (unlikely(nb_ret == 0)) {
253 if (++port == nb_ports)
258 struct rte_ring *tx_ring = p->dist_tx_ring;
259 uint16_t sent = rte_ring_enqueue_burst(tx_ring,
260 (void *)bufs, nb_ret);
262 uint16_t nb_ret = nb_rx;
264 * Swap the following two lines if you want the rx traffic
265 * to go directly to tx, no distribution.
267 struct rte_ring *out_ring = p->rx_dist_ring;
268 /* struct rte_ring *out_ring = p->dist_tx_ring; */
270 uint16_t sent = rte_ring_enqueue_burst(out_ring,
271 (void *)bufs, nb_ret);
274 app_stats.rx.enqueued_pkts += sent;
275 if (unlikely(sent < nb_ret)) {
276 RTE_LOG_DP(DEBUG, DISTRAPP,
277 "%s:Packet loss due to full ring\n", __func__);
278 while (sent < nb_ret)
279 rte_pktmbuf_free(bufs[sent++]);
281 if (++port == nb_ports)
284 /* set worker & tx threads quit flag */
285 printf("\nCore %u exiting rx task.\n", rte_lcore_id());
291 flush_one_port(struct output_buffer *outbuf, uint8_t outp)
293 unsigned nb_tx = rte_eth_tx_burst(outp, 0, outbuf->mbufs,
295 app_stats.tx.tx_pkts += nb_tx;
297 if (unlikely(nb_tx < outbuf->count)) {
298 RTE_LOG_DP(DEBUG, DISTRAPP,
299 "%s:Packet loss with tx_burst\n", __func__);
301 rte_pktmbuf_free(outbuf->mbufs[nb_tx]);
302 } while (++nb_tx < outbuf->count);
308 flush_all_ports(struct output_buffer *tx_buffers, uint8_t nb_ports)
311 for (outp = 0; outp < nb_ports; outp++) {
312 /* skip ports that are not enabled */
313 if ((enabled_port_mask & (1 << outp)) == 0)
316 if (tx_buffers[outp].count == 0)
319 flush_one_port(&tx_buffers[outp], outp);
326 lcore_distributor(struct lcore_params *p)
328 struct rte_ring *in_r = p->rx_dist_ring;
329 struct rte_ring *out_r = p->dist_tx_ring;
330 struct rte_mbuf *bufs[BURST_SIZE * 4];
331 struct rte_distributor *d = p->d;
333 printf("\nCore %u acting as distributor core.\n", rte_lcore_id());
334 while (!quit_signal_dist) {
335 const uint16_t nb_rx = rte_ring_dequeue_burst(in_r,
336 (void *)bufs, BURST_SIZE*1);
338 app_stats.dist.in_pkts += nb_rx;
340 /* Distribute the packets */
341 rte_distributor_process(d, bufs, nb_rx);
343 const uint16_t nb_ret =
344 rte_distributor_returned_pkts(d,
347 if (unlikely(nb_ret == 0))
349 app_stats.dist.ret_pkts += nb_ret;
351 uint16_t sent = rte_ring_enqueue_burst(out_r,
352 (void *)bufs, nb_ret);
353 app_stats.dist.sent_pkts += sent;
354 if (unlikely(sent < nb_ret)) {
355 app_stats.dist.enqdrop_pkts += nb_ret - sent;
356 RTE_LOG(DEBUG, DISTRAPP,
357 "%s:Packet loss due to full out ring\n",
359 while (sent < nb_ret)
360 rte_pktmbuf_free(bufs[sent++]);
364 printf("\nCore %u exiting distributor task.\n", rte_lcore_id());
365 quit_signal_work = 1;
367 rte_distributor_flush(d);
368 /* Unblock any returns so workers can exit */
369 rte_distributor_clear_returns(d);
376 lcore_tx(struct rte_ring *in_r)
378 static struct output_buffer tx_buffers[RTE_MAX_ETHPORTS];
379 const uint8_t nb_ports = rte_eth_dev_count();
380 const int socket_id = rte_socket_id();
383 for (port = 0; port < nb_ports; port++) {
384 /* skip ports that are not enabled */
385 if ((enabled_port_mask & (1 << port)) == 0)
388 if (rte_eth_dev_socket_id(port) > 0 &&
389 rte_eth_dev_socket_id(port) != socket_id)
390 printf("WARNING, port %u is on remote NUMA node to "
391 "TX thread.\n\tPerformance will not "
392 "be optimal.\n", port);
395 printf("\nCore %u doing packet TX.\n", rte_lcore_id());
396 while (!quit_signal) {
398 for (port = 0; port < nb_ports; port++) {
399 /* skip ports that are not enabled */
400 if ((enabled_port_mask & (1 << port)) == 0)
403 struct rte_mbuf *bufs[BURST_SIZE];
404 const uint16_t nb_rx = rte_ring_dequeue_burst(in_r,
405 (void *)bufs, BURST_SIZE);
406 app_stats.tx.dequeue_pkts += nb_rx;
408 /* if we get no traffic, flush anything we have */
409 if (unlikely(nb_rx == 0)) {
410 flush_all_ports(tx_buffers, nb_ports);
414 /* for traffic we receive, queue it up for transmit */
416 rte_prefetch_non_temporal((void *)bufs[0]);
417 rte_prefetch_non_temporal((void *)bufs[1]);
418 rte_prefetch_non_temporal((void *)bufs[2]);
419 for (i = 0; i < nb_rx; i++) {
420 struct output_buffer *outbuf;
422 rte_prefetch_non_temporal((void *)bufs[i + 3]);
424 * workers should update in_port to hold the
427 outp = bufs[i]->port;
428 /* skip ports that are not enabled */
429 if ((enabled_port_mask & (1 << outp)) == 0)
432 outbuf = &tx_buffers[outp];
433 outbuf->mbufs[outbuf->count++] = bufs[i];
434 if (outbuf->count == BURST_SIZE)
435 flush_one_port(outbuf, outp);
443 int_handler(int sig_num)
445 printf("Exiting on signal %d\n", sig_num);
446 /* set quit flag for rx thread to exit */
447 quit_signal_dist = 1;
453 struct rte_eth_stats eth_stats;
455 const unsigned int num_workers = rte_lcore_count() - 4;
457 for (i = 0; i < rte_eth_dev_count(); i++) {
458 rte_eth_stats_get(i, ð_stats);
459 app_stats.port_rx_pkts[i] = eth_stats.ipackets;
460 app_stats.port_tx_pkts[i] = eth_stats.opackets;
463 printf("\n\nRX Thread:\n");
464 for (i = 0; i < rte_eth_dev_count(); i++) {
465 printf("Port %u Pktsin : %5.2f\n", i,
466 (app_stats.port_rx_pkts[i] -
467 prev_app_stats.port_rx_pkts[i])/1000000.0);
468 prev_app_stats.port_rx_pkts[i] = app_stats.port_rx_pkts[i];
470 printf(" - Received: %5.2f\n",
471 (app_stats.rx.rx_pkts -
472 prev_app_stats.rx.rx_pkts)/1000000.0);
473 printf(" - Returned: %5.2f\n",
474 (app_stats.rx.returned_pkts -
475 prev_app_stats.rx.returned_pkts)/1000000.0);
476 printf(" - Enqueued: %5.2f\n",
477 (app_stats.rx.enqueued_pkts -
478 prev_app_stats.rx.enqueued_pkts)/1000000.0);
479 printf(" - Dropped: %s%5.2f%s\n", ANSI_COLOR_RED,
480 (app_stats.rx.enqdrop_pkts -
481 prev_app_stats.rx.enqdrop_pkts)/1000000.0,
484 printf("Distributor thread:\n");
485 printf(" - In: %5.2f\n",
486 (app_stats.dist.in_pkts -
487 prev_app_stats.dist.in_pkts)/1000000.0);
488 printf(" - Returned: %5.2f\n",
489 (app_stats.dist.ret_pkts -
490 prev_app_stats.dist.ret_pkts)/1000000.0);
491 printf(" - Sent: %5.2f\n",
492 (app_stats.dist.sent_pkts -
493 prev_app_stats.dist.sent_pkts)/1000000.0);
494 printf(" - Dropped %s%5.2f%s\n", ANSI_COLOR_RED,
495 (app_stats.dist.enqdrop_pkts -
496 prev_app_stats.dist.enqdrop_pkts)/1000000.0,
499 printf("TX thread:\n");
500 printf(" - Dequeued: %5.2f\n",
501 (app_stats.tx.dequeue_pkts -
502 prev_app_stats.tx.dequeue_pkts)/1000000.0);
503 for (i = 0; i < rte_eth_dev_count(); i++) {
504 printf("Port %u Pktsout: %5.2f\n",
505 i, (app_stats.port_tx_pkts[i] -
506 prev_app_stats.port_tx_pkts[i])/1000000.0);
507 prev_app_stats.port_tx_pkts[i] = app_stats.port_tx_pkts[i];
509 printf(" - Transmitted: %5.2f\n",
510 (app_stats.tx.tx_pkts -
511 prev_app_stats.tx.tx_pkts)/1000000.0);
512 printf(" - Dropped: %s%5.2f%s\n", ANSI_COLOR_RED,
513 (app_stats.tx.enqdrop_pkts -
514 prev_app_stats.tx.enqdrop_pkts)/1000000.0,
517 prev_app_stats.rx.rx_pkts = app_stats.rx.rx_pkts;
518 prev_app_stats.rx.returned_pkts = app_stats.rx.returned_pkts;
519 prev_app_stats.rx.enqueued_pkts = app_stats.rx.enqueued_pkts;
520 prev_app_stats.rx.enqdrop_pkts = app_stats.rx.enqdrop_pkts;
521 prev_app_stats.dist.in_pkts = app_stats.dist.in_pkts;
522 prev_app_stats.dist.ret_pkts = app_stats.dist.ret_pkts;
523 prev_app_stats.dist.sent_pkts = app_stats.dist.sent_pkts;
524 prev_app_stats.dist.enqdrop_pkts = app_stats.dist.enqdrop_pkts;
525 prev_app_stats.tx.dequeue_pkts = app_stats.tx.dequeue_pkts;
526 prev_app_stats.tx.tx_pkts = app_stats.tx.tx_pkts;
527 prev_app_stats.tx.enqdrop_pkts = app_stats.tx.enqdrop_pkts;
529 for (i = 0; i < num_workers; i++) {
530 printf("Worker %02u Pkts: %5.2f. Bursts(1-8): ", i,
531 (app_stats.worker_pkts[i] -
532 prev_app_stats.worker_pkts[i])/1000000.0);
533 for (j = 0; j < 8; j++) {
534 printf("%"PRIu64" ", app_stats.worker_bursts[i][j]);
535 app_stats.worker_bursts[i][j] = 0;
538 prev_app_stats.worker_pkts[i] = app_stats.worker_pkts[i];
543 lcore_worker(struct lcore_params *p)
545 struct rte_distributor *d = p->d;
546 const unsigned id = p->worker_id;
547 unsigned int num = 0;
551 * for single port, xor_val will be zero so we won't modify the output
552 * port, otherwise we send traffic from 0 to 1, 2 to 3, and vice versa
554 const unsigned xor_val = (rte_eth_dev_count() > 1);
555 struct rte_mbuf *buf[8] __rte_cache_aligned;
557 for (i = 0; i < 8; i++)
560 printf("\nCore %u acting as worker core.\n", rte_lcore_id());
561 while (!quit_signal_work) {
562 num = rte_distributor_get_pkt(d, id, buf, buf, num);
563 /* Do a little bit of work for each packet */
564 for (i = 0; i < num; i++) {
565 uint64_t t = rte_rdtsc()+100;
567 while (rte_rdtsc() < t)
569 buf[i]->port ^= xor_val;
577 print_usage(const char *prgname)
579 printf("%s [EAL options] -- -p PORTMASK\n"
580 " -p PORTMASK: hexadecimal bitmask of ports to configure\n",
585 parse_portmask(const char *portmask)
590 /* parse hexadecimal string */
591 pm = strtoul(portmask, &end, 16);
592 if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
601 /* Parse the argument given in the command line of the application */
603 parse_args(int argc, char **argv)
608 char *prgname = argv[0];
609 static struct option lgopts[] = {
615 while ((opt = getopt_long(argc, argvopt, "p:",
616 lgopts, &option_index)) != EOF) {
621 enabled_port_mask = parse_portmask(optarg);
622 if (enabled_port_mask == 0) {
623 printf("invalid portmask\n");
624 print_usage(prgname);
630 print_usage(prgname);
636 print_usage(prgname);
640 argv[optind-1] = prgname;
642 optind = 1; /* reset getopt lib */
646 /* Main function, does initialization and calls the per-lcore functions */
648 main(int argc, char *argv[])
650 struct rte_mempool *mbuf_pool;
651 struct rte_distributor *d;
652 struct rte_ring *dist_tx_ring;
653 struct rte_ring *rx_dist_ring;
654 unsigned lcore_id, worker_id = 0;
657 uint8_t nb_ports_available;
660 /* catch ctrl-c so we can print on exit */
661 signal(SIGINT, int_handler);
664 int ret = rte_eal_init(argc, argv);
666 rte_exit(EXIT_FAILURE, "Error with EAL initialization\n");
670 /* parse application arguments (after the EAL ones) */
671 ret = parse_args(argc, argv);
673 rte_exit(EXIT_FAILURE, "Invalid distributor parameters\n");
675 if (rte_lcore_count() < 4)
676 rte_exit(EXIT_FAILURE, "Error, This application needs at "
677 "least 4 logical cores to run:\n"
678 "1 lcore for packet RX\n"
679 "1 lcore for distribution\n"
680 "1 lcore for packet TX\n"
681 "and at least 1 lcore for worker threads\n");
683 nb_ports = rte_eth_dev_count();
685 rte_exit(EXIT_FAILURE, "Error: no ethernet ports detected\n");
686 if (nb_ports != 1 && (nb_ports & 1))
687 rte_exit(EXIT_FAILURE, "Error: number of ports must be even, except "
688 "when using a single port\n");
690 mbuf_pool = rte_pktmbuf_pool_create("MBUF_POOL",
691 NUM_MBUFS * nb_ports, MBUF_CACHE_SIZE, 0,
692 RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
693 if (mbuf_pool == NULL)
694 rte_exit(EXIT_FAILURE, "Cannot create mbuf pool\n");
695 nb_ports_available = nb_ports;
697 /* initialize all ports */
698 for (portid = 0; portid < nb_ports; portid++) {
699 /* skip ports that are not enabled */
700 if ((enabled_port_mask & (1 << portid)) == 0) {
701 printf("\nSkipping disabled port %d\n", portid);
702 nb_ports_available--;
706 printf("Initializing port %u... done\n", (unsigned) portid);
708 if (port_init(portid, mbuf_pool) != 0)
709 rte_exit(EXIT_FAILURE, "Cannot initialize port %"PRIu8"\n",
713 if (!nb_ports_available) {
714 rte_exit(EXIT_FAILURE,
715 "All available ports are disabled. Please set portmask.\n");
718 d = rte_distributor_create("PKT_DIST", rte_socket_id(),
719 rte_lcore_count() - 3,
722 rte_exit(EXIT_FAILURE, "Cannot create distributor\n");
725 * scheduler ring is read by the transmitter core, and written to
728 dist_tx_ring = rte_ring_create("Output_ring", SCHED_TX_RING_SZ,
729 rte_socket_id(), RING_F_SC_DEQ | RING_F_SP_ENQ);
730 if (dist_tx_ring == NULL)
731 rte_exit(EXIT_FAILURE, "Cannot create output ring\n");
733 rx_dist_ring = rte_ring_create("Input_ring", SCHED_RX_RING_SZ,
734 rte_socket_id(), RING_F_SC_DEQ | RING_F_SP_ENQ);
735 if (rx_dist_ring == NULL)
736 rte_exit(EXIT_FAILURE, "Cannot create output ring\n");
738 RTE_LCORE_FOREACH_SLAVE(lcore_id) {
739 if (worker_id == rte_lcore_count() - 3) {
740 printf("Starting distributor on lcore_id %d\n",
742 /* distributor core */
743 struct lcore_params *p =
744 rte_malloc(NULL, sizeof(*p), 0);
746 rte_panic("malloc failure\n");
747 *p = (struct lcore_params){worker_id, d,
748 rx_dist_ring, dist_tx_ring, mbuf_pool};
749 rte_eal_remote_launch(
750 (lcore_function_t *)lcore_distributor,
752 } else if (worker_id == rte_lcore_count() - 4) {
753 printf("Starting tx on worker_id %d, lcore_id %d\n",
754 worker_id, lcore_id);
756 rte_eal_remote_launch((lcore_function_t *)lcore_tx,
757 dist_tx_ring, lcore_id);
759 struct lcore_params *p =
760 rte_malloc(NULL, sizeof(*p), 0);
762 rte_panic("malloc failure\n");
763 *p = (struct lcore_params){worker_id, d, rx_dist_ring,
764 dist_tx_ring, mbuf_pool};
766 rte_eal_remote_launch((lcore_function_t *)lcore_worker,
771 /* call lcore_main on master core only */
772 struct lcore_params p = { 0, d, rx_dist_ring, dist_tx_ring, mbuf_pool};
774 if (lcore_rx(&p) != 0)
777 freq = rte_get_timer_hz();
778 t = rte_rdtsc() + freq;
779 while (!quit_signal_dist) {
780 if (t < rte_rdtsc()) {
782 t = rte_rdtsc() + freq;
787 RTE_LCORE_FOREACH_SLAVE(lcore_id) {
788 if (rte_eal_wait_lcore(lcore_id) < 0)