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39 #include <sys/types.h>
40 #include <sys/queue.h>
41 #include <netinet/in.h>
48 #include <rte_common.h>
50 #include <rte_memory.h>
51 #include <rte_memcpy.h>
52 #include <rte_memzone.h>
54 #include <rte_per_lcore.h>
55 #include <rte_launch.h>
56 #include <rte_atomic.h>
57 #include <rte_cycles.h>
58 #include <rte_prefetch.h>
59 #include <rte_lcore.h>
60 #include <rte_per_lcore.h>
61 #include <rte_branch_prediction.h>
62 #include <rte_interrupts.h>
64 #include <rte_random.h>
65 #include <rte_debug.h>
66 #include <rte_ether.h>
67 #include <rte_ethdev.h>
69 #include <rte_mempool.h>
72 #define RTE_LOGTYPE_L2FWD RTE_LOGTYPE_USER1
76 #define MAX_PKT_BURST 32
77 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
80 * Configurable number of RX/TX ring descriptors
82 #define RTE_TEST_RX_DESC_DEFAULT 128
83 #define RTE_TEST_TX_DESC_DEFAULT 512
84 static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
85 static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;
87 /* ethernet addresses of ports */
88 static struct ether_addr l2fwd_ports_eth_addr[RTE_MAX_ETHPORTS];
90 /* mask of enabled ports */
91 static uint32_t l2fwd_enabled_port_mask = 0;
93 /* list of enabled ports */
94 static uint32_t l2fwd_dst_ports[RTE_MAX_ETHPORTS];
96 static unsigned int l2fwd_rx_queue_per_lcore = 1;
100 struct rte_mbuf *m_table[MAX_PKT_BURST];
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 struct mbuf_table tx_mbufs[RTE_MAX_ETHPORTS];
110 } __rte_cache_aligned;
111 struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE];
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");
188 /* Send the burst of packets on an output interface */
190 l2fwd_send_burst(struct lcore_queue_conf *qconf, unsigned n, uint8_t port)
192 struct rte_mbuf **m_table;
196 m_table = (struct rte_mbuf **)qconf->tx_mbufs[port].m_table;
198 ret = rte_eth_tx_burst(port, (uint16_t) queueid, m_table, (uint16_t) n);
199 port_statistics[port].tx += ret;
200 if (unlikely(ret < n)) {
201 port_statistics[port].dropped += (n - ret);
203 rte_pktmbuf_free(m_table[ret]);
210 /* Enqueue packets for TX and prepare them to be sent */
212 l2fwd_send_packet(struct rte_mbuf *m, uint8_t port)
214 unsigned lcore_id, len;
215 struct lcore_queue_conf *qconf;
217 lcore_id = rte_lcore_id();
219 qconf = &lcore_queue_conf[lcore_id];
220 len = qconf->tx_mbufs[port].len;
221 qconf->tx_mbufs[port].m_table[len] = m;
224 /* enough pkts to be sent */
225 if (unlikely(len == MAX_PKT_BURST)) {
226 l2fwd_send_burst(qconf, MAX_PKT_BURST, port);
230 qconf->tx_mbufs[port].len = len;
235 l2fwd_simple_forward(struct rte_mbuf *m, unsigned portid)
237 struct ether_hdr *eth;
241 dst_port = l2fwd_dst_ports[portid];
242 eth = rte_pktmbuf_mtod(m, struct ether_hdr *);
244 /* 02:00:00:00:00:xx */
245 tmp = ð->d_addr.addr_bytes[0];
246 *((uint64_t *)tmp) = 0x000000000002 + ((uint64_t)dst_port << 40);
249 ether_addr_copy(&l2fwd_ports_eth_addr[dst_port], ð->s_addr);
251 l2fwd_send_packet(m, (uint8_t) dst_port);
254 /* main processing loop */
256 l2fwd_main_loop(void)
258 struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
261 uint64_t prev_tsc, diff_tsc, cur_tsc, timer_tsc;
262 unsigned i, j, portid, nb_rx;
263 struct lcore_queue_conf *qconf;
264 const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US;
269 lcore_id = rte_lcore_id();
270 qconf = &lcore_queue_conf[lcore_id];
272 if (qconf->n_rx_port == 0) {
273 RTE_LOG(INFO, L2FWD, "lcore %u has nothing to do\n", lcore_id);
277 RTE_LOG(INFO, L2FWD, "entering main loop on lcore %u\n", lcore_id);
279 for (i = 0; i < qconf->n_rx_port; i++) {
281 portid = qconf->rx_port_list[i];
282 RTE_LOG(INFO, L2FWD, " -- lcoreid=%u portid=%u\n", lcore_id,
288 cur_tsc = rte_rdtsc();
291 * TX burst queue drain
293 diff_tsc = cur_tsc - prev_tsc;
294 if (unlikely(diff_tsc > drain_tsc)) {
296 for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
297 if (qconf->tx_mbufs[portid].len == 0)
299 l2fwd_send_burst(&lcore_queue_conf[lcore_id],
300 qconf->tx_mbufs[portid].len,
302 qconf->tx_mbufs[portid].len = 0;
305 /* if timer is enabled */
306 if (timer_period > 0) {
308 /* advance the timer */
309 timer_tsc += diff_tsc;
311 /* if timer has reached its timeout */
312 if (unlikely(timer_tsc >= (uint64_t) timer_period)) {
314 /* do this only on master core */
315 if (lcore_id == rte_get_master_lcore()) {
317 /* reset the timer */
327 * Read packet from RX queues
329 for (i = 0; i < qconf->n_rx_port; i++) {
331 portid = qconf->rx_port_list[i];
332 nb_rx = rte_eth_rx_burst((uint8_t) portid, 0,
333 pkts_burst, MAX_PKT_BURST);
335 port_statistics[portid].rx += nb_rx;
337 for (j = 0; j < nb_rx; j++) {
339 rte_prefetch0(rte_pktmbuf_mtod(m, void *));
340 l2fwd_simple_forward(m, portid);
347 l2fwd_launch_one_lcore(__attribute__((unused)) void *dummy)
355 l2fwd_usage(const char *prgname)
357 printf("%s [EAL options] -- -p PORTMASK [-q NQ]\n"
358 " -p PORTMASK: hexadecimal bitmask of ports to configure\n"
359 " -q NQ: number of queue (=ports) per lcore (default is 1)\n"
360 " -T PERIOD: statistics will be refreshed each PERIOD seconds (0 to disable, 10 default, 86400 maximum)\n",
365 l2fwd_parse_portmask(const char *portmask)
370 /* parse hexadecimal string */
371 pm = strtoul(portmask, &end, 16);
372 if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
382 l2fwd_parse_nqueue(const char *q_arg)
387 /* parse hexadecimal string */
388 n = strtoul(q_arg, &end, 10);
389 if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
393 if (n >= MAX_RX_QUEUE_PER_LCORE)
400 l2fwd_parse_timer_period(const char *q_arg)
405 /* parse number string */
406 n = strtol(q_arg, &end, 10);
407 if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
409 if (n >= MAX_TIMER_PERIOD)
415 /* Parse the argument given in the command line of the application */
417 l2fwd_parse_args(int argc, char **argv)
422 char *prgname = argv[0];
423 static struct option lgopts[] = {
429 while ((opt = getopt_long(argc, argvopt, "p:q:T:",
430 lgopts, &option_index)) != EOF) {
435 l2fwd_enabled_port_mask = l2fwd_parse_portmask(optarg);
436 if (l2fwd_enabled_port_mask == 0) {
437 printf("invalid portmask\n");
438 l2fwd_usage(prgname);
445 l2fwd_rx_queue_per_lcore = l2fwd_parse_nqueue(optarg);
446 if (l2fwd_rx_queue_per_lcore == 0) {
447 printf("invalid queue number\n");
448 l2fwd_usage(prgname);
455 timer_period = l2fwd_parse_timer_period(optarg) * 1000 * TIMER_MILLISECOND;
456 if (timer_period < 0) {
457 printf("invalid timer period\n");
458 l2fwd_usage(prgname);
465 l2fwd_usage(prgname);
469 l2fwd_usage(prgname);
475 argv[optind-1] = prgname;
478 optind = 0; /* reset getopt lib */
482 /* Check the link status of all ports in up to 9s, and print them finally */
484 check_all_ports_link_status(uint8_t port_num, uint32_t port_mask)
486 #define CHECK_INTERVAL 100 /* 100ms */
487 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
488 uint8_t portid, count, all_ports_up, print_flag = 0;
489 struct rte_eth_link link;
491 printf("\nChecking link status");
493 for (count = 0; count <= MAX_CHECK_TIME; count++) {
495 for (portid = 0; portid < port_num; portid++) {
496 if ((port_mask & (1 << portid)) == 0)
498 memset(&link, 0, sizeof(link));
499 rte_eth_link_get_nowait(portid, &link);
500 /* print link status if flag set */
501 if (print_flag == 1) {
502 if (link.link_status)
503 printf("Port %d Link Up - speed %u "
504 "Mbps - %s\n", (uint8_t)portid,
505 (unsigned)link.link_speed,
506 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
507 ("full-duplex") : ("half-duplex\n"));
509 printf("Port %d Link Down\n",
513 /* clear all_ports_up flag if any link down */
514 if (link.link_status == 0) {
519 /* after finally printing all link status, get out */
523 if (all_ports_up == 0) {
526 rte_delay_ms(CHECK_INTERVAL);
529 /* set the print_flag if all ports up or timeout */
530 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
538 main(int argc, char **argv)
540 struct lcore_queue_conf *qconf;
541 struct rte_eth_dev_info dev_info;
544 uint8_t nb_ports_available;
545 uint8_t portid, last_port;
546 unsigned lcore_id, rx_lcore_id;
547 unsigned nb_ports_in_mask = 0;
550 ret = rte_eal_init(argc, argv);
552 rte_exit(EXIT_FAILURE, "Invalid EAL arguments\n");
556 /* parse application arguments (after the EAL ones) */
557 ret = l2fwd_parse_args(argc, argv);
559 rte_exit(EXIT_FAILURE, "Invalid L2FWD arguments\n");
561 /* create the mbuf pool */
562 l2fwd_pktmbuf_pool = rte_pktmbuf_pool_create("mbuf_pool", NB_MBUF, 32,
563 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
564 if (l2fwd_pktmbuf_pool == NULL)
565 rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\n");
567 nb_ports = rte_eth_dev_count();
569 rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n");
571 if (nb_ports > RTE_MAX_ETHPORTS)
572 nb_ports = RTE_MAX_ETHPORTS;
574 /* reset l2fwd_dst_ports */
575 for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++)
576 l2fwd_dst_ports[portid] = 0;
580 * Each logical core is assigned a dedicated TX queue on each port.
582 for (portid = 0; portid < nb_ports; portid++) {
583 /* skip ports that are not enabled */
584 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
587 if (nb_ports_in_mask % 2) {
588 l2fwd_dst_ports[portid] = last_port;
589 l2fwd_dst_ports[last_port] = portid;
596 rte_eth_dev_info_get(portid, &dev_info);
598 if (nb_ports_in_mask % 2) {
599 printf("Notice: odd number of ports in portmask.\n");
600 l2fwd_dst_ports[last_port] = last_port;
606 /* Initialize the port/queue configuration of each logical core */
607 for (portid = 0; portid < nb_ports; portid++) {
608 /* skip ports that are not enabled */
609 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
612 /* get the lcore_id for this port */
613 while (rte_lcore_is_enabled(rx_lcore_id) == 0 ||
614 lcore_queue_conf[rx_lcore_id].n_rx_port ==
615 l2fwd_rx_queue_per_lcore) {
617 if (rx_lcore_id >= RTE_MAX_LCORE)
618 rte_exit(EXIT_FAILURE, "Not enough cores\n");
621 if (qconf != &lcore_queue_conf[rx_lcore_id])
622 /* Assigned a new logical core in the loop above. */
623 qconf = &lcore_queue_conf[rx_lcore_id];
625 qconf->rx_port_list[qconf->n_rx_port] = portid;
627 printf("Lcore %u: RX port %u\n", rx_lcore_id, (unsigned) portid);
630 nb_ports_available = nb_ports;
632 /* Initialise each port */
633 for (portid = 0; portid < nb_ports; portid++) {
634 /* skip ports that are not enabled */
635 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) {
636 printf("Skipping disabled port %u\n", (unsigned) portid);
637 nb_ports_available--;
641 printf("Initializing port %u... ", (unsigned) portid);
643 ret = rte_eth_dev_configure(portid, 1, 1, &port_conf);
645 rte_exit(EXIT_FAILURE, "Cannot configure device: err=%d, port=%u\n",
646 ret, (unsigned) portid);
648 rte_eth_macaddr_get(portid,&l2fwd_ports_eth_addr[portid]);
650 /* init one RX queue */
652 ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
653 rte_eth_dev_socket_id(portid),
657 rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup:err=%d, port=%u\n",
658 ret, (unsigned) portid);
660 /* init one TX queue on each port */
662 ret = rte_eth_tx_queue_setup(portid, 0, nb_txd,
663 rte_eth_dev_socket_id(portid),
666 rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup:err=%d, port=%u\n",
667 ret, (unsigned) portid);
670 ret = rte_eth_dev_start(portid);
672 rte_exit(EXIT_FAILURE, "rte_eth_dev_start:err=%d, port=%u\n",
673 ret, (unsigned) portid);
677 rte_eth_promiscuous_enable(portid);
679 printf("Port %u, MAC address: %02X:%02X:%02X:%02X:%02X:%02X\n\n",
681 l2fwd_ports_eth_addr[portid].addr_bytes[0],
682 l2fwd_ports_eth_addr[portid].addr_bytes[1],
683 l2fwd_ports_eth_addr[portid].addr_bytes[2],
684 l2fwd_ports_eth_addr[portid].addr_bytes[3],
685 l2fwd_ports_eth_addr[portid].addr_bytes[4],
686 l2fwd_ports_eth_addr[portid].addr_bytes[5]);
688 /* initialize port stats */
689 memset(&port_statistics, 0, sizeof(port_statistics));
692 if (!nb_ports_available) {
693 rte_exit(EXIT_FAILURE,
694 "All available ports are disabled. Please set portmask.\n");
697 check_all_ports_link_status(nb_ports, l2fwd_enabled_port_mask);
699 /* launch per-lcore init on every lcore */
700 rte_eal_mp_remote_launch(l2fwd_launch_one_lcore, NULL, CALL_MASTER);
701 RTE_LCORE_FOREACH_SLAVE(lcore_id) {
702 if (rte_eal_wait_lcore(lcore_id) < 0)