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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>
71 #include <rte_mempool.h>
74 static volatile bool force_quit;
76 /* MAC updating enabled by default */
77 static int mac_updating = 1;
79 #define RTE_LOGTYPE_L2FWD RTE_LOGTYPE_USER1
83 #define MAX_PKT_BURST 32
84 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
85 #define MEMPOOL_CACHE_SIZE 256
88 * Configurable number of RX/TX ring descriptors
90 #define RTE_TEST_RX_DESC_DEFAULT 128
91 #define RTE_TEST_TX_DESC_DEFAULT 512
92 static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
93 static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;
95 /* ethernet addresses of ports */
96 static struct ether_addr l2fwd_ports_eth_addr[RTE_MAX_ETHPORTS];
98 /* mask of enabled ports */
99 static uint32_t l2fwd_enabled_port_mask = 0;
101 /* list of enabled ports */
102 static uint32_t l2fwd_dst_ports[RTE_MAX_ETHPORTS];
104 static unsigned int l2fwd_rx_queue_per_lcore = 1;
106 #define MAX_RX_QUEUE_PER_LCORE 16
107 #define MAX_TX_QUEUE_PER_PORT 16
108 struct lcore_queue_conf {
110 unsigned rx_port_list[MAX_RX_QUEUE_PER_LCORE];
111 } __rte_cache_aligned;
112 struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE];
114 static struct rte_eth_dev_tx_buffer *tx_buffer[RTE_MAX_ETHPORTS];
116 static const struct rte_eth_conf port_conf = {
119 .header_split = 0, /**< Header Split disabled */
120 .hw_ip_checksum = 0, /**< IP checksum offload disabled */
121 .hw_vlan_filter = 0, /**< VLAN filtering disabled */
122 .jumbo_frame = 0, /**< Jumbo Frame Support disabled */
123 .hw_strip_crc = 0, /**< CRC stripped by hardware */
126 .mq_mode = ETH_MQ_TX_NONE,
130 struct rte_mempool * l2fwd_pktmbuf_pool = NULL;
132 /* Per-port statistics struct */
133 struct l2fwd_port_statistics {
137 } __rte_cache_aligned;
138 struct l2fwd_port_statistics port_statistics[RTE_MAX_ETHPORTS];
140 #define MAX_TIMER_PERIOD 86400 /* 1 day max */
141 /* A tsc-based timer responsible for triggering statistics printout */
142 static uint64_t timer_period = 10; /* default period is 10 seconds */
144 /* Print out statistics on packets dropped */
148 uint64_t total_packets_dropped, total_packets_tx, total_packets_rx;
151 total_packets_dropped = 0;
152 total_packets_tx = 0;
153 total_packets_rx = 0;
155 const char clr[] = { 27, '[', '2', 'J', '\0' };
156 const char topLeft[] = { 27, '[', '1', ';', '1', 'H','\0' };
158 /* Clear screen and move to top left */
159 printf("%s%s", clr, topLeft);
161 printf("\nPort statistics ====================================");
163 for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
164 /* skip disabled ports */
165 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
167 printf("\nStatistics for port %u ------------------------------"
168 "\nPackets sent: %24"PRIu64
169 "\nPackets received: %20"PRIu64
170 "\nPackets dropped: %21"PRIu64,
172 port_statistics[portid].tx,
173 port_statistics[portid].rx,
174 port_statistics[portid].dropped);
176 total_packets_dropped += port_statistics[portid].dropped;
177 total_packets_tx += port_statistics[portid].tx;
178 total_packets_rx += port_statistics[portid].rx;
180 printf("\nAggregate statistics ==============================="
181 "\nTotal packets sent: %18"PRIu64
182 "\nTotal packets received: %14"PRIu64
183 "\nTotal packets dropped: %15"PRIu64,
186 total_packets_dropped);
187 printf("\n====================================================\n");
191 l2fwd_mac_updating(struct rte_mbuf *m, unsigned dest_portid)
193 struct ether_hdr *eth;
196 eth = rte_pktmbuf_mtod(m, struct ether_hdr *);
198 /* 02:00:00:00:00:xx */
199 tmp = ð->d_addr.addr_bytes[0];
200 *((uint64_t *)tmp) = 0x000000000002 + ((uint64_t)dest_portid << 40);
203 ether_addr_copy(&l2fwd_ports_eth_addr[dest_portid], ð->s_addr);
207 l2fwd_simple_forward(struct rte_mbuf *m, unsigned portid)
211 struct rte_eth_dev_tx_buffer *buffer;
213 dst_port = l2fwd_dst_ports[portid];
216 l2fwd_mac_updating(m, dst_port);
218 buffer = tx_buffer[dst_port];
219 sent = rte_eth_tx_buffer(dst_port, 0, buffer, m);
221 port_statistics[dst_port].tx += sent;
224 /* main processing loop */
226 l2fwd_main_loop(void)
228 struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
232 uint64_t prev_tsc, diff_tsc, cur_tsc, timer_tsc;
233 unsigned i, j, portid, nb_rx;
234 struct lcore_queue_conf *qconf;
235 const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S *
237 struct rte_eth_dev_tx_buffer *buffer;
242 lcore_id = rte_lcore_id();
243 qconf = &lcore_queue_conf[lcore_id];
245 if (qconf->n_rx_port == 0) {
246 RTE_LOG(INFO, L2FWD, "lcore %u has nothing to do\n", lcore_id);
250 RTE_LOG(INFO, L2FWD, "entering main loop on lcore %u\n", lcore_id);
252 for (i = 0; i < qconf->n_rx_port; i++) {
254 portid = qconf->rx_port_list[i];
255 RTE_LOG(INFO, L2FWD, " -- lcoreid=%u portid=%u\n", lcore_id,
260 while (!force_quit) {
262 cur_tsc = rte_rdtsc();
265 * TX burst queue drain
267 diff_tsc = cur_tsc - prev_tsc;
268 if (unlikely(diff_tsc > drain_tsc)) {
270 for (i = 0; i < qconf->n_rx_port; i++) {
272 portid = l2fwd_dst_ports[qconf->rx_port_list[i]];
273 buffer = tx_buffer[portid];
275 sent = rte_eth_tx_buffer_flush(portid, 0, buffer);
277 port_statistics[portid].tx += sent;
281 /* if timer is enabled */
282 if (timer_period > 0) {
284 /* advance the timer */
285 timer_tsc += diff_tsc;
287 /* if timer has reached its timeout */
288 if (unlikely(timer_tsc >= timer_period)) {
290 /* do this only on master core */
291 if (lcore_id == rte_get_master_lcore()) {
293 /* reset the timer */
303 * Read packet from RX queues
305 for (i = 0; i < qconf->n_rx_port; i++) {
307 portid = qconf->rx_port_list[i];
308 nb_rx = rte_eth_rx_burst((uint8_t) portid, 0,
309 pkts_burst, MAX_PKT_BURST);
311 port_statistics[portid].rx += nb_rx;
313 for (j = 0; j < nb_rx; j++) {
315 rte_prefetch0(rte_pktmbuf_mtod(m, void *));
316 l2fwd_simple_forward(m, portid);
323 l2fwd_launch_one_lcore(__attribute__((unused)) void *dummy)
331 l2fwd_usage(const char *prgname)
333 printf("%s [EAL options] -- -p PORTMASK [-q NQ]\n"
334 " -p PORTMASK: hexadecimal bitmask of ports to configure\n"
335 " -q NQ: number of queue (=ports) per lcore (default is 1)\n"
336 " -T PERIOD: statistics will be refreshed each PERIOD seconds (0 to disable, 10 default, 86400 maximum)\n"
337 " --[no-]mac-updating: Enable or disable MAC addresses updating (enabled by default)\n"
339 " - The source MAC address is replaced by the TX port MAC address\n"
340 " - The destination MAC address is replaced by 02:00:00:00:00:TX_PORT_ID\n",
345 l2fwd_parse_portmask(const char *portmask)
350 /* parse hexadecimal string */
351 pm = strtoul(portmask, &end, 16);
352 if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
362 l2fwd_parse_nqueue(const char *q_arg)
367 /* parse hexadecimal string */
368 n = strtoul(q_arg, &end, 10);
369 if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
373 if (n >= MAX_RX_QUEUE_PER_LCORE)
380 l2fwd_parse_timer_period(const char *q_arg)
385 /* parse number string */
386 n = strtol(q_arg, &end, 10);
387 if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
389 if (n >= MAX_TIMER_PERIOD)
395 /* Parse the argument given in the command line of the application */
397 l2fwd_parse_args(int argc, char **argv)
399 int opt, ret, timer_secs;
402 char *prgname = argv[0];
403 static struct option lgopts[] = {
404 { "mac-updating", no_argument, &mac_updating, 1},
405 { "no-mac-updating", no_argument, &mac_updating, 0},
411 while ((opt = getopt_long(argc, argvopt, "p:q:T:",
412 lgopts, &option_index)) != EOF) {
417 l2fwd_enabled_port_mask = l2fwd_parse_portmask(optarg);
418 if (l2fwd_enabled_port_mask == 0) {
419 printf("invalid portmask\n");
420 l2fwd_usage(prgname);
427 l2fwd_rx_queue_per_lcore = l2fwd_parse_nqueue(optarg);
428 if (l2fwd_rx_queue_per_lcore == 0) {
429 printf("invalid queue number\n");
430 l2fwd_usage(prgname);
437 timer_secs = l2fwd_parse_timer_period(optarg);
438 if (timer_secs < 0) {
439 printf("invalid timer period\n");
440 l2fwd_usage(prgname);
443 timer_period = timer_secs;
451 l2fwd_usage(prgname);
457 argv[optind-1] = prgname;
460 optind = 0; /* reset getopt lib */
464 /* Check the link status of all ports in up to 9s, and print them finally */
466 check_all_ports_link_status(uint8_t port_num, uint32_t port_mask)
468 #define CHECK_INTERVAL 100 /* 100ms */
469 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
470 uint8_t portid, count, all_ports_up, print_flag = 0;
471 struct rte_eth_link link;
473 printf("\nChecking link status");
475 for (count = 0; count <= MAX_CHECK_TIME; count++) {
479 for (portid = 0; portid < port_num; portid++) {
482 if ((port_mask & (1 << portid)) == 0)
484 memset(&link, 0, sizeof(link));
485 rte_eth_link_get_nowait(portid, &link);
486 /* print link status if flag set */
487 if (print_flag == 1) {
488 if (link.link_status)
489 printf("Port %d Link Up - speed %u "
490 "Mbps - %s\n", (uint8_t)portid,
491 (unsigned)link.link_speed,
492 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
493 ("full-duplex") : ("half-duplex\n"));
495 printf("Port %d Link Down\n",
499 /* clear all_ports_up flag if any link down */
500 if (link.link_status == ETH_LINK_DOWN) {
505 /* after finally printing all link status, get out */
509 if (all_ports_up == 0) {
512 rte_delay_ms(CHECK_INTERVAL);
515 /* set the print_flag if all ports up or timeout */
516 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
524 signal_handler(int signum)
526 if (signum == SIGINT || signum == SIGTERM) {
527 printf("\n\nSignal %d received, preparing to exit...\n",
534 main(int argc, char **argv)
536 struct lcore_queue_conf *qconf;
537 struct rte_eth_dev_info dev_info;
540 uint8_t nb_ports_available;
541 uint8_t portid, last_port;
542 unsigned lcore_id, rx_lcore_id;
543 unsigned nb_ports_in_mask = 0;
546 ret = rte_eal_init(argc, argv);
548 rte_exit(EXIT_FAILURE, "Invalid EAL arguments\n");
553 signal(SIGINT, signal_handler);
554 signal(SIGTERM, signal_handler);
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 printf("MAC updating %s\n", mac_updating ? "enabled" : "disabled");
563 /* convert to number of cycles */
564 timer_period *= rte_get_timer_hz();
566 /* create the mbuf pool */
567 l2fwd_pktmbuf_pool = rte_pktmbuf_pool_create("mbuf_pool", NB_MBUF,
568 MEMPOOL_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE,
570 if (l2fwd_pktmbuf_pool == NULL)
571 rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\n");
573 nb_ports = rte_eth_dev_count();
575 rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n");
577 /* reset l2fwd_dst_ports */
578 for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++)
579 l2fwd_dst_ports[portid] = 0;
583 * Each logical core is assigned a dedicated TX queue on each port.
585 for (portid = 0; portid < nb_ports; portid++) {
586 /* skip ports that are not enabled */
587 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
590 if (nb_ports_in_mask % 2) {
591 l2fwd_dst_ports[portid] = last_port;
592 l2fwd_dst_ports[last_port] = portid;
599 rte_eth_dev_info_get(portid, &dev_info);
601 if (nb_ports_in_mask % 2) {
602 printf("Notice: odd number of ports in portmask.\n");
603 l2fwd_dst_ports[last_port] = last_port;
609 /* Initialize the port/queue configuration of each logical core */
610 for (portid = 0; portid < nb_ports; portid++) {
611 /* skip ports that are not enabled */
612 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
615 /* get the lcore_id for this port */
616 while (rte_lcore_is_enabled(rx_lcore_id) == 0 ||
617 lcore_queue_conf[rx_lcore_id].n_rx_port ==
618 l2fwd_rx_queue_per_lcore) {
620 if (rx_lcore_id >= RTE_MAX_LCORE)
621 rte_exit(EXIT_FAILURE, "Not enough cores\n");
624 if (qconf != &lcore_queue_conf[rx_lcore_id])
625 /* Assigned a new logical core in the loop above. */
626 qconf = &lcore_queue_conf[rx_lcore_id];
628 qconf->rx_port_list[qconf->n_rx_port] = portid;
630 printf("Lcore %u: RX port %u\n", rx_lcore_id, (unsigned) portid);
633 nb_ports_available = nb_ports;
635 /* Initialise each port */
636 for (portid = 0; portid < nb_ports; portid++) {
637 /* skip ports that are not enabled */
638 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) {
639 printf("Skipping disabled port %u\n", (unsigned) portid);
640 nb_ports_available--;
644 printf("Initializing port %u... ", (unsigned) portid);
646 ret = rte_eth_dev_configure(portid, 1, 1, &port_conf);
648 rte_exit(EXIT_FAILURE, "Cannot configure device: err=%d, port=%u\n",
649 ret, (unsigned) portid);
651 rte_eth_macaddr_get(portid,&l2fwd_ports_eth_addr[portid]);
653 /* init one RX queue */
655 ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
656 rte_eth_dev_socket_id(portid),
660 rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup:err=%d, port=%u\n",
661 ret, (unsigned) portid);
663 /* init one TX queue on each port */
665 ret = rte_eth_tx_queue_setup(portid, 0, nb_txd,
666 rte_eth_dev_socket_id(portid),
669 rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup:err=%d, port=%u\n",
670 ret, (unsigned) portid);
672 /* Initialize TX buffers */
673 tx_buffer[portid] = rte_zmalloc_socket("tx_buffer",
674 RTE_ETH_TX_BUFFER_SIZE(MAX_PKT_BURST), 0,
675 rte_eth_dev_socket_id(portid));
676 if (tx_buffer[portid] == NULL)
677 rte_exit(EXIT_FAILURE, "Cannot allocate buffer for tx on port %u\n",
680 rte_eth_tx_buffer_init(tx_buffer[portid], MAX_PKT_BURST);
682 ret = rte_eth_tx_buffer_set_err_callback(tx_buffer[portid],
683 rte_eth_tx_buffer_count_callback,
684 &port_statistics[portid].dropped);
686 rte_exit(EXIT_FAILURE, "Cannot set error callback for "
687 "tx buffer on port %u\n", (unsigned) portid);
690 ret = rte_eth_dev_start(portid);
692 rte_exit(EXIT_FAILURE, "rte_eth_dev_start:err=%d, port=%u\n",
693 ret, (unsigned) portid);
697 rte_eth_promiscuous_enable(portid);
699 printf("Port %u, MAC address: %02X:%02X:%02X:%02X:%02X:%02X\n\n",
701 l2fwd_ports_eth_addr[portid].addr_bytes[0],
702 l2fwd_ports_eth_addr[portid].addr_bytes[1],
703 l2fwd_ports_eth_addr[portid].addr_bytes[2],
704 l2fwd_ports_eth_addr[portid].addr_bytes[3],
705 l2fwd_ports_eth_addr[portid].addr_bytes[4],
706 l2fwd_ports_eth_addr[portid].addr_bytes[5]);
708 /* initialize port stats */
709 memset(&port_statistics, 0, sizeof(port_statistics));
712 if (!nb_ports_available) {
713 rte_exit(EXIT_FAILURE,
714 "All available ports are disabled. Please set portmask.\n");
717 check_all_ports_link_status(nb_ports, l2fwd_enabled_port_mask);
720 /* launch per-lcore init on every lcore */
721 rte_eal_mp_remote_launch(l2fwd_launch_one_lcore, NULL, CALL_MASTER);
722 RTE_LCORE_FOREACH_SLAVE(lcore_id) {
723 if (rte_eal_wait_lcore(lcore_id) < 0) {
729 for (portid = 0; portid < nb_ports; portid++) {
730 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
732 printf("Closing port %d...", portid);
733 rte_eth_dev_stop(portid);
734 rte_eth_dev_close(portid);