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39 #include <sys/types.h>
40 #include <sys/queue.h>
41 #include <netinet/in.h>
50 #include <rte_common.h>
52 #include <rte_malloc.h>
53 #include <rte_memory.h>
54 #include <rte_memcpy.h>
55 #include <rte_memzone.h>
57 #include <rte_per_lcore.h>
58 #include <rte_launch.h>
59 #include <rte_atomic.h>
60 #include <rte_cycles.h>
61 #include <rte_prefetch.h>
62 #include <rte_lcore.h>
63 #include <rte_per_lcore.h>
64 #include <rte_branch_prediction.h>
65 #include <rte_interrupts.h>
67 #include <rte_random.h>
68 #include <rte_debug.h>
69 #include <rte_ether.h>
70 #include <rte_ethdev.h>
72 #include <rte_mempool.h>
75 static volatile bool force_quit;
77 #define RTE_LOGTYPE_L2FWD RTE_LOGTYPE_USER1
81 #define MAX_PKT_BURST 32
82 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
85 * Configurable number of RX/TX ring descriptors
87 #define RTE_TEST_RX_DESC_DEFAULT 128
88 #define RTE_TEST_TX_DESC_DEFAULT 512
89 static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
90 static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;
92 /* ethernet addresses of ports */
93 static struct ether_addr l2fwd_ports_eth_addr[RTE_MAX_ETHPORTS];
95 /* mask of enabled ports */
96 static uint32_t l2fwd_enabled_port_mask = 0;
98 /* list of enabled ports */
99 static uint32_t l2fwd_dst_ports[RTE_MAX_ETHPORTS];
101 static unsigned int l2fwd_rx_queue_per_lcore = 1;
103 #define MAX_RX_QUEUE_PER_LCORE 16
104 #define MAX_TX_QUEUE_PER_PORT 16
105 struct lcore_queue_conf {
107 unsigned rx_port_list[MAX_RX_QUEUE_PER_LCORE];
108 } __rte_cache_aligned;
109 struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE];
111 static struct rte_eth_dev_tx_buffer *tx_buffer[RTE_MAX_ETHPORTS];
113 static const struct rte_eth_conf port_conf = {
116 .header_split = 0, /**< Header Split disabled */
117 .hw_ip_checksum = 0, /**< IP checksum offload disabled */
118 .hw_vlan_filter = 0, /**< VLAN filtering disabled */
119 .jumbo_frame = 0, /**< Jumbo Frame Support disabled */
120 .hw_strip_crc = 0, /**< CRC stripped by hardware */
123 .mq_mode = ETH_MQ_TX_NONE,
127 struct rte_mempool * l2fwd_pktmbuf_pool = NULL;
129 /* Per-port statistics struct */
130 struct l2fwd_port_statistics {
134 } __rte_cache_aligned;
135 struct l2fwd_port_statistics port_statistics[RTE_MAX_ETHPORTS];
137 /* A tsc-based timer responsible for triggering statistics printout */
138 #define TIMER_MILLISECOND 2000000ULL /* around 1ms at 2 Ghz */
139 #define MAX_TIMER_PERIOD 86400 /* 1 day max */
140 static int64_t timer_period = 10 * TIMER_MILLISECOND * 1000; /* default period is 10 seconds */
142 /* Print out statistics on packets dropped */
146 uint64_t total_packets_dropped, total_packets_tx, total_packets_rx;
149 total_packets_dropped = 0;
150 total_packets_tx = 0;
151 total_packets_rx = 0;
153 const char clr[] = { 27, '[', '2', 'J', '\0' };
154 const char topLeft[] = { 27, '[', '1', ';', '1', 'H','\0' };
156 /* Clear screen and move to top left */
157 printf("%s%s", clr, topLeft);
159 printf("\nPort statistics ====================================");
161 for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
162 /* skip disabled ports */
163 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
165 printf("\nStatistics for port %u ------------------------------"
166 "\nPackets sent: %24"PRIu64
167 "\nPackets received: %20"PRIu64
168 "\nPackets dropped: %21"PRIu64,
170 port_statistics[portid].tx,
171 port_statistics[portid].rx,
172 port_statistics[portid].dropped);
174 total_packets_dropped += port_statistics[portid].dropped;
175 total_packets_tx += port_statistics[portid].tx;
176 total_packets_rx += port_statistics[portid].rx;
178 printf("\nAggregate statistics ==============================="
179 "\nTotal packets sent: %18"PRIu64
180 "\nTotal packets received: %14"PRIu64
181 "\nTotal packets dropped: %15"PRIu64,
184 total_packets_dropped);
185 printf("\n====================================================\n");
189 l2fwd_simple_forward(struct rte_mbuf *m, unsigned portid)
191 struct ether_hdr *eth;
195 struct rte_eth_dev_tx_buffer *buffer;
197 dst_port = l2fwd_dst_ports[portid];
198 eth = rte_pktmbuf_mtod(m, struct ether_hdr *);
200 /* 02:00:00:00:00:xx */
201 tmp = ð->d_addr.addr_bytes[0];
202 *((uint64_t *)tmp) = 0x000000000002 + ((uint64_t)dst_port << 40);
205 ether_addr_copy(&l2fwd_ports_eth_addr[dst_port], ð->s_addr);
207 buffer = tx_buffer[dst_port];
208 sent = rte_eth_tx_buffer(dst_port, 0, buffer, m);
210 port_statistics[dst_port].tx += sent;
213 /* main processing loop */
215 l2fwd_main_loop(void)
217 struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
221 uint64_t prev_tsc, diff_tsc, cur_tsc, timer_tsc;
222 unsigned i, j, portid, nb_rx;
223 struct lcore_queue_conf *qconf;
224 const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S *
226 struct rte_eth_dev_tx_buffer *buffer;
231 lcore_id = rte_lcore_id();
232 qconf = &lcore_queue_conf[lcore_id];
234 if (qconf->n_rx_port == 0) {
235 RTE_LOG(INFO, L2FWD, "lcore %u has nothing to do\n", lcore_id);
239 RTE_LOG(INFO, L2FWD, "entering main loop on lcore %u\n", lcore_id);
241 for (i = 0; i < qconf->n_rx_port; i++) {
243 portid = qconf->rx_port_list[i];
244 RTE_LOG(INFO, L2FWD, " -- lcoreid=%u portid=%u\n", lcore_id,
249 while (!force_quit) {
251 cur_tsc = rte_rdtsc();
254 * TX burst queue drain
256 diff_tsc = cur_tsc - prev_tsc;
257 if (unlikely(diff_tsc > drain_tsc)) {
259 for (i = 0; i < qconf->n_rx_port; i++) {
261 portid = l2fwd_dst_ports[qconf->rx_port_list[i]];
262 buffer = tx_buffer[portid];
264 sent = rte_eth_tx_buffer_flush(portid, 0, buffer);
266 port_statistics[portid].tx += sent;
270 /* if timer is enabled */
271 if (timer_period > 0) {
273 /* advance the timer */
274 timer_tsc += diff_tsc;
276 /* if timer has reached its timeout */
277 if (unlikely(timer_tsc >= (uint64_t) timer_period)) {
279 /* do this only on master core */
280 if (lcore_id == rte_get_master_lcore()) {
282 /* reset the timer */
292 * Read packet from RX queues
294 for (i = 0; i < qconf->n_rx_port; i++) {
296 portid = qconf->rx_port_list[i];
297 nb_rx = rte_eth_rx_burst((uint8_t) portid, 0,
298 pkts_burst, MAX_PKT_BURST);
300 port_statistics[portid].rx += nb_rx;
302 for (j = 0; j < nb_rx; j++) {
304 rte_prefetch0(rte_pktmbuf_mtod(m, void *));
305 l2fwd_simple_forward(m, portid);
312 l2fwd_launch_one_lcore(__attribute__((unused)) void *dummy)
320 l2fwd_usage(const char *prgname)
322 printf("%s [EAL options] -- -p PORTMASK [-q NQ]\n"
323 " -p PORTMASK: hexadecimal bitmask of ports to configure\n"
324 " -q NQ: number of queue (=ports) per lcore (default is 1)\n"
325 " -T PERIOD: statistics will be refreshed each PERIOD seconds (0 to disable, 10 default, 86400 maximum)\n",
330 l2fwd_parse_portmask(const char *portmask)
335 /* parse hexadecimal string */
336 pm = strtoul(portmask, &end, 16);
337 if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
347 l2fwd_parse_nqueue(const char *q_arg)
352 /* parse hexadecimal string */
353 n = strtoul(q_arg, &end, 10);
354 if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
358 if (n >= MAX_RX_QUEUE_PER_LCORE)
365 l2fwd_parse_timer_period(const char *q_arg)
370 /* parse number string */
371 n = strtol(q_arg, &end, 10);
372 if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
374 if (n >= MAX_TIMER_PERIOD)
380 /* Parse the argument given in the command line of the application */
382 l2fwd_parse_args(int argc, char **argv)
387 char *prgname = argv[0];
388 static struct option lgopts[] = {
394 while ((opt = getopt_long(argc, argvopt, "p:q:T:",
395 lgopts, &option_index)) != EOF) {
400 l2fwd_enabled_port_mask = l2fwd_parse_portmask(optarg);
401 if (l2fwd_enabled_port_mask == 0) {
402 printf("invalid portmask\n");
403 l2fwd_usage(prgname);
410 l2fwd_rx_queue_per_lcore = l2fwd_parse_nqueue(optarg);
411 if (l2fwd_rx_queue_per_lcore == 0) {
412 printf("invalid queue number\n");
413 l2fwd_usage(prgname);
420 timer_period = l2fwd_parse_timer_period(optarg) * 1000 * TIMER_MILLISECOND;
421 if (timer_period < 0) {
422 printf("invalid timer period\n");
423 l2fwd_usage(prgname);
430 l2fwd_usage(prgname);
434 l2fwd_usage(prgname);
440 argv[optind-1] = prgname;
443 optind = 0; /* reset getopt lib */
447 /* Check the link status of all ports in up to 9s, and print them finally */
449 check_all_ports_link_status(uint8_t port_num, uint32_t port_mask)
451 #define CHECK_INTERVAL 100 /* 100ms */
452 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
453 uint8_t portid, count, all_ports_up, print_flag = 0;
454 struct rte_eth_link link;
456 printf("\nChecking link status");
458 for (count = 0; count <= MAX_CHECK_TIME; count++) {
462 for (portid = 0; portid < port_num; portid++) {
465 if ((port_mask & (1 << portid)) == 0)
467 memset(&link, 0, sizeof(link));
468 rte_eth_link_get_nowait(portid, &link);
469 /* print link status if flag set */
470 if (print_flag == 1) {
471 if (link.link_status)
472 printf("Port %d Link Up - speed %u "
473 "Mbps - %s\n", (uint8_t)portid,
474 (unsigned)link.link_speed,
475 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
476 ("full-duplex") : ("half-duplex\n"));
478 printf("Port %d Link Down\n",
482 /* clear all_ports_up flag if any link down */
483 if (link.link_status == ETH_LINK_DOWN) {
488 /* after finally printing all link status, get out */
492 if (all_ports_up == 0) {
495 rte_delay_ms(CHECK_INTERVAL);
498 /* set the print_flag if all ports up or timeout */
499 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
507 signal_handler(int signum)
509 if (signum == SIGINT || signum == SIGTERM) {
510 printf("\n\nSignal %d received, preparing to exit...\n",
517 main(int argc, char **argv)
519 struct lcore_queue_conf *qconf;
520 struct rte_eth_dev_info dev_info;
523 uint8_t nb_ports_available;
524 uint8_t portid, last_port;
525 unsigned lcore_id, rx_lcore_id;
526 unsigned nb_ports_in_mask = 0;
529 ret = rte_eal_init(argc, argv);
531 rte_exit(EXIT_FAILURE, "Invalid EAL arguments\n");
536 signal(SIGINT, signal_handler);
537 signal(SIGTERM, signal_handler);
539 /* parse application arguments (after the EAL ones) */
540 ret = l2fwd_parse_args(argc, argv);
542 rte_exit(EXIT_FAILURE, "Invalid L2FWD arguments\n");
544 /* create the mbuf pool */
545 l2fwd_pktmbuf_pool = rte_pktmbuf_pool_create("mbuf_pool", NB_MBUF, 32,
546 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
547 if (l2fwd_pktmbuf_pool == NULL)
548 rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\n");
550 nb_ports = rte_eth_dev_count();
552 rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n");
554 /* reset l2fwd_dst_ports */
555 for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++)
556 l2fwd_dst_ports[portid] = 0;
560 * Each logical core is assigned a dedicated TX queue on each port.
562 for (portid = 0; portid < nb_ports; portid++) {
563 /* skip ports that are not enabled */
564 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
567 if (nb_ports_in_mask % 2) {
568 l2fwd_dst_ports[portid] = last_port;
569 l2fwd_dst_ports[last_port] = portid;
576 rte_eth_dev_info_get(portid, &dev_info);
578 if (nb_ports_in_mask % 2) {
579 printf("Notice: odd number of ports in portmask.\n");
580 l2fwd_dst_ports[last_port] = last_port;
586 /* Initialize the port/queue configuration of each logical core */
587 for (portid = 0; portid < nb_ports; portid++) {
588 /* skip ports that are not enabled */
589 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
592 /* get the lcore_id for this port */
593 while (rte_lcore_is_enabled(rx_lcore_id) == 0 ||
594 lcore_queue_conf[rx_lcore_id].n_rx_port ==
595 l2fwd_rx_queue_per_lcore) {
597 if (rx_lcore_id >= RTE_MAX_LCORE)
598 rte_exit(EXIT_FAILURE, "Not enough cores\n");
601 if (qconf != &lcore_queue_conf[rx_lcore_id])
602 /* Assigned a new logical core in the loop above. */
603 qconf = &lcore_queue_conf[rx_lcore_id];
605 qconf->rx_port_list[qconf->n_rx_port] = portid;
607 printf("Lcore %u: RX port %u\n", rx_lcore_id, (unsigned) portid);
610 nb_ports_available = nb_ports;
612 /* Initialise each port */
613 for (portid = 0; portid < nb_ports; portid++) {
614 /* skip ports that are not enabled */
615 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) {
616 printf("Skipping disabled port %u\n", (unsigned) portid);
617 nb_ports_available--;
621 printf("Initializing port %u... ", (unsigned) portid);
623 ret = rte_eth_dev_configure(portid, 1, 1, &port_conf);
625 rte_exit(EXIT_FAILURE, "Cannot configure device: err=%d, port=%u\n",
626 ret, (unsigned) portid);
628 rte_eth_macaddr_get(portid,&l2fwd_ports_eth_addr[portid]);
630 /* init one RX queue */
632 ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
633 rte_eth_dev_socket_id(portid),
637 rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup:err=%d, port=%u\n",
638 ret, (unsigned) portid);
640 /* init one TX queue on each port */
642 ret = rte_eth_tx_queue_setup(portid, 0, nb_txd,
643 rte_eth_dev_socket_id(portid),
646 rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup:err=%d, port=%u\n",
647 ret, (unsigned) portid);
649 /* Initialize TX buffers */
650 tx_buffer[portid] = rte_zmalloc_socket("tx_buffer",
651 RTE_ETH_TX_BUFFER_SIZE(MAX_PKT_BURST), 0,
652 rte_eth_dev_socket_id(portid));
653 if (tx_buffer[portid] == NULL)
654 rte_exit(EXIT_FAILURE, "Cannot allocate buffer for tx on port %u\n",
657 rte_eth_tx_buffer_init(tx_buffer[portid], MAX_PKT_BURST);
659 ret = rte_eth_tx_buffer_set_err_callback(tx_buffer[portid],
660 rte_eth_tx_buffer_count_callback,
661 &port_statistics[portid].dropped);
663 rte_exit(EXIT_FAILURE, "Cannot set error callback for "
664 "tx buffer on port %u\n", (unsigned) portid);
667 ret = rte_eth_dev_start(portid);
669 rte_exit(EXIT_FAILURE, "rte_eth_dev_start:err=%d, port=%u\n",
670 ret, (unsigned) portid);
674 rte_eth_promiscuous_enable(portid);
676 printf("Port %u, MAC address: %02X:%02X:%02X:%02X:%02X:%02X\n\n",
678 l2fwd_ports_eth_addr[portid].addr_bytes[0],
679 l2fwd_ports_eth_addr[portid].addr_bytes[1],
680 l2fwd_ports_eth_addr[portid].addr_bytes[2],
681 l2fwd_ports_eth_addr[portid].addr_bytes[3],
682 l2fwd_ports_eth_addr[portid].addr_bytes[4],
683 l2fwd_ports_eth_addr[portid].addr_bytes[5]);
685 /* initialize port stats */
686 memset(&port_statistics, 0, sizeof(port_statistics));
689 if (!nb_ports_available) {
690 rte_exit(EXIT_FAILURE,
691 "All available ports are disabled. Please set portmask.\n");
694 check_all_ports_link_status(nb_ports, l2fwd_enabled_port_mask);
697 /* launch per-lcore init on every lcore */
698 rte_eal_mp_remote_launch(l2fwd_launch_one_lcore, NULL, CALL_MASTER);
699 RTE_LCORE_FOREACH_SLAVE(lcore_id) {
700 if (rte_eal_wait_lcore(lcore_id) < 0) {
706 for (portid = 0; portid < nb_ports; portid++) {
707 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
709 printf("Closing port %d...", portid);
710 rte_eth_dev_stop(portid);
711 rte_eth_dev_close(portid);