net/mlx5: use SPDX tags in 6WIND copyrighted files
[dpdk.git] / examples / l2fwd / main.c
1 /* SPDX-License-Identifier: BSD-3-Clause
2  * Copyright(c) 2010-2016 Intel Corporation
3  */
4
5 #include <stdio.h>
6 #include <stdlib.h>
7 #include <string.h>
8 #include <stdint.h>
9 #include <inttypes.h>
10 #include <sys/types.h>
11 #include <sys/queue.h>
12 #include <netinet/in.h>
13 #include <setjmp.h>
14 #include <stdarg.h>
15 #include <ctype.h>
16 #include <errno.h>
17 #include <getopt.h>
18 #include <signal.h>
19 #include <stdbool.h>
20
21 #include <rte_common.h>
22 #include <rte_log.h>
23 #include <rte_malloc.h>
24 #include <rte_memory.h>
25 #include <rte_memcpy.h>
26 #include <rte_eal.h>
27 #include <rte_launch.h>
28 #include <rte_atomic.h>
29 #include <rte_cycles.h>
30 #include <rte_prefetch.h>
31 #include <rte_lcore.h>
32 #include <rte_per_lcore.h>
33 #include <rte_branch_prediction.h>
34 #include <rte_interrupts.h>
35 #include <rte_random.h>
36 #include <rte_debug.h>
37 #include <rte_ether.h>
38 #include <rte_ethdev.h>
39 #include <rte_mempool.h>
40 #include <rte_mbuf.h>
41
42 static volatile bool force_quit;
43
44 /* MAC updating enabled by default */
45 static int mac_updating = 1;
46
47 #define RTE_LOGTYPE_L2FWD RTE_LOGTYPE_USER1
48
49 #define MAX_PKT_BURST 32
50 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
51 #define MEMPOOL_CACHE_SIZE 256
52
53 /*
54  * Configurable number of RX/TX ring descriptors
55  */
56 #define RTE_TEST_RX_DESC_DEFAULT 1024
57 #define RTE_TEST_TX_DESC_DEFAULT 1024
58 static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
59 static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;
60
61 /* ethernet addresses of ports */
62 static struct ether_addr l2fwd_ports_eth_addr[RTE_MAX_ETHPORTS];
63
64 /* mask of enabled ports */
65 static uint32_t l2fwd_enabled_port_mask = 0;
66
67 /* list of enabled ports */
68 static uint32_t l2fwd_dst_ports[RTE_MAX_ETHPORTS];
69
70 static unsigned int l2fwd_rx_queue_per_lcore = 1;
71
72 #define MAX_RX_QUEUE_PER_LCORE 16
73 #define MAX_TX_QUEUE_PER_PORT 16
74 struct lcore_queue_conf {
75         unsigned n_rx_port;
76         unsigned rx_port_list[MAX_RX_QUEUE_PER_LCORE];
77 } __rte_cache_aligned;
78 struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE];
79
80 static struct rte_eth_dev_tx_buffer *tx_buffer[RTE_MAX_ETHPORTS];
81
82 static struct rte_eth_conf port_conf = {
83         .rxmode = {
84                 .split_hdr_size = 0,
85                 .ignore_offload_bitfield = 1,
86                 .offloads = DEV_RX_OFFLOAD_CRC_STRIP,
87         },
88         .txmode = {
89                 .mq_mode = ETH_MQ_TX_NONE,
90         },
91 };
92
93 struct rte_mempool * l2fwd_pktmbuf_pool = NULL;
94
95 /* Per-port statistics struct */
96 struct l2fwd_port_statistics {
97         uint64_t tx;
98         uint64_t rx;
99         uint64_t dropped;
100 } __rte_cache_aligned;
101 struct l2fwd_port_statistics port_statistics[RTE_MAX_ETHPORTS];
102
103 #define MAX_TIMER_PERIOD 86400 /* 1 day max */
104 /* A tsc-based timer responsible for triggering statistics printout */
105 static uint64_t timer_period = 10; /* default period is 10 seconds */
106
107 /* Print out statistics on packets dropped */
108 static void
109 print_stats(void)
110 {
111         uint64_t total_packets_dropped, total_packets_tx, total_packets_rx;
112         unsigned portid;
113
114         total_packets_dropped = 0;
115         total_packets_tx = 0;
116         total_packets_rx = 0;
117
118         const char clr[] = { 27, '[', '2', 'J', '\0' };
119         const char topLeft[] = { 27, '[', '1', ';', '1', 'H','\0' };
120
121                 /* Clear screen and move to top left */
122         printf("%s%s", clr, topLeft);
123
124         printf("\nPort statistics ====================================");
125
126         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
127                 /* skip disabled ports */
128                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
129                         continue;
130                 printf("\nStatistics for port %u ------------------------------"
131                            "\nPackets sent: %24"PRIu64
132                            "\nPackets received: %20"PRIu64
133                            "\nPackets dropped: %21"PRIu64,
134                            portid,
135                            port_statistics[portid].tx,
136                            port_statistics[portid].rx,
137                            port_statistics[portid].dropped);
138
139                 total_packets_dropped += port_statistics[portid].dropped;
140                 total_packets_tx += port_statistics[portid].tx;
141                 total_packets_rx += port_statistics[portid].rx;
142         }
143         printf("\nAggregate statistics ==============================="
144                    "\nTotal packets sent: %18"PRIu64
145                    "\nTotal packets received: %14"PRIu64
146                    "\nTotal packets dropped: %15"PRIu64,
147                    total_packets_tx,
148                    total_packets_rx,
149                    total_packets_dropped);
150         printf("\n====================================================\n");
151 }
152
153 static void
154 l2fwd_mac_updating(struct rte_mbuf *m, unsigned dest_portid)
155 {
156         struct ether_hdr *eth;
157         void *tmp;
158
159         eth = rte_pktmbuf_mtod(m, struct ether_hdr *);
160
161         /* 02:00:00:00:00:xx */
162         tmp = &eth->d_addr.addr_bytes[0];
163         *((uint64_t *)tmp) = 0x000000000002 + ((uint64_t)dest_portid << 40);
164
165         /* src addr */
166         ether_addr_copy(&l2fwd_ports_eth_addr[dest_portid], &eth->s_addr);
167 }
168
169 static void
170 l2fwd_simple_forward(struct rte_mbuf *m, unsigned portid)
171 {
172         unsigned dst_port;
173         int sent;
174         struct rte_eth_dev_tx_buffer *buffer;
175
176         dst_port = l2fwd_dst_ports[portid];
177
178         if (mac_updating)
179                 l2fwd_mac_updating(m, dst_port);
180
181         buffer = tx_buffer[dst_port];
182         sent = rte_eth_tx_buffer(dst_port, 0, buffer, m);
183         if (sent)
184                 port_statistics[dst_port].tx += sent;
185 }
186
187 /* main processing loop */
188 static void
189 l2fwd_main_loop(void)
190 {
191         struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
192         struct rte_mbuf *m;
193         int sent;
194         unsigned lcore_id;
195         uint64_t prev_tsc, diff_tsc, cur_tsc, timer_tsc;
196         unsigned i, j, portid, nb_rx;
197         struct lcore_queue_conf *qconf;
198         const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S *
199                         BURST_TX_DRAIN_US;
200         struct rte_eth_dev_tx_buffer *buffer;
201
202         prev_tsc = 0;
203         timer_tsc = 0;
204
205         lcore_id = rte_lcore_id();
206         qconf = &lcore_queue_conf[lcore_id];
207
208         if (qconf->n_rx_port == 0) {
209                 RTE_LOG(INFO, L2FWD, "lcore %u has nothing to do\n", lcore_id);
210                 return;
211         }
212
213         RTE_LOG(INFO, L2FWD, "entering main loop on lcore %u\n", lcore_id);
214
215         for (i = 0; i < qconf->n_rx_port; i++) {
216
217                 portid = qconf->rx_port_list[i];
218                 RTE_LOG(INFO, L2FWD, " -- lcoreid=%u portid=%u\n", lcore_id,
219                         portid);
220
221         }
222
223         while (!force_quit) {
224
225                 cur_tsc = rte_rdtsc();
226
227                 /*
228                  * TX burst queue drain
229                  */
230                 diff_tsc = cur_tsc - prev_tsc;
231                 if (unlikely(diff_tsc > drain_tsc)) {
232
233                         for (i = 0; i < qconf->n_rx_port; i++) {
234
235                                 portid = l2fwd_dst_ports[qconf->rx_port_list[i]];
236                                 buffer = tx_buffer[portid];
237
238                                 sent = rte_eth_tx_buffer_flush(portid, 0, buffer);
239                                 if (sent)
240                                         port_statistics[portid].tx += sent;
241
242                         }
243
244                         /* if timer is enabled */
245                         if (timer_period > 0) {
246
247                                 /* advance the timer */
248                                 timer_tsc += diff_tsc;
249
250                                 /* if timer has reached its timeout */
251                                 if (unlikely(timer_tsc >= timer_period)) {
252
253                                         /* do this only on master core */
254                                         if (lcore_id == rte_get_master_lcore()) {
255                                                 print_stats();
256                                                 /* reset the timer */
257                                                 timer_tsc = 0;
258                                         }
259                                 }
260                         }
261
262                         prev_tsc = cur_tsc;
263                 }
264
265                 /*
266                  * Read packet from RX queues
267                  */
268                 for (i = 0; i < qconf->n_rx_port; i++) {
269
270                         portid = qconf->rx_port_list[i];
271                         nb_rx = rte_eth_rx_burst(portid, 0,
272                                                  pkts_burst, MAX_PKT_BURST);
273
274                         port_statistics[portid].rx += nb_rx;
275
276                         for (j = 0; j < nb_rx; j++) {
277                                 m = pkts_burst[j];
278                                 rte_prefetch0(rte_pktmbuf_mtod(m, void *));
279                                 l2fwd_simple_forward(m, portid);
280                         }
281                 }
282         }
283 }
284
285 static int
286 l2fwd_launch_one_lcore(__attribute__((unused)) void *dummy)
287 {
288         l2fwd_main_loop();
289         return 0;
290 }
291
292 /* display usage */
293 static void
294 l2fwd_usage(const char *prgname)
295 {
296         printf("%s [EAL options] -- -p PORTMASK [-q NQ]\n"
297                "  -p PORTMASK: hexadecimal bitmask of ports to configure\n"
298                "  -q NQ: number of queue (=ports) per lcore (default is 1)\n"
299                    "  -T PERIOD: statistics will be refreshed each PERIOD seconds (0 to disable, 10 default, 86400 maximum)\n"
300                    "  --[no-]mac-updating: Enable or disable MAC addresses updating (enabled by default)\n"
301                    "      When enabled:\n"
302                    "       - The source MAC address is replaced by the TX port MAC address\n"
303                    "       - The destination MAC address is replaced by 02:00:00:00:00:TX_PORT_ID\n",
304                prgname);
305 }
306
307 static int
308 l2fwd_parse_portmask(const char *portmask)
309 {
310         char *end = NULL;
311         unsigned long pm;
312
313         /* parse hexadecimal string */
314         pm = strtoul(portmask, &end, 16);
315         if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
316                 return -1;
317
318         if (pm == 0)
319                 return -1;
320
321         return pm;
322 }
323
324 static unsigned int
325 l2fwd_parse_nqueue(const char *q_arg)
326 {
327         char *end = NULL;
328         unsigned long n;
329
330         /* parse hexadecimal string */
331         n = strtoul(q_arg, &end, 10);
332         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
333                 return 0;
334         if (n == 0)
335                 return 0;
336         if (n >= MAX_RX_QUEUE_PER_LCORE)
337                 return 0;
338
339         return n;
340 }
341
342 static int
343 l2fwd_parse_timer_period(const char *q_arg)
344 {
345         char *end = NULL;
346         int n;
347
348         /* parse number string */
349         n = strtol(q_arg, &end, 10);
350         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
351                 return -1;
352         if (n >= MAX_TIMER_PERIOD)
353                 return -1;
354
355         return n;
356 }
357
358 static const char short_options[] =
359         "p:"  /* portmask */
360         "q:"  /* number of queues */
361         "T:"  /* timer period */
362         ;
363
364 #define CMD_LINE_OPT_MAC_UPDATING "mac-updating"
365 #define CMD_LINE_OPT_NO_MAC_UPDATING "no-mac-updating"
366
367 enum {
368         /* long options mapped to a short option */
369
370         /* first long only option value must be >= 256, so that we won't
371          * conflict with short options */
372         CMD_LINE_OPT_MIN_NUM = 256,
373 };
374
375 static const struct option lgopts[] = {
376         { CMD_LINE_OPT_MAC_UPDATING, no_argument, &mac_updating, 1},
377         { CMD_LINE_OPT_NO_MAC_UPDATING, no_argument, &mac_updating, 0},
378         {NULL, 0, 0, 0}
379 };
380
381 /* Parse the argument given in the command line of the application */
382 static int
383 l2fwd_parse_args(int argc, char **argv)
384 {
385         int opt, ret, timer_secs;
386         char **argvopt;
387         int option_index;
388         char *prgname = argv[0];
389
390         argvopt = argv;
391
392         while ((opt = getopt_long(argc, argvopt, short_options,
393                                   lgopts, &option_index)) != EOF) {
394
395                 switch (opt) {
396                 /* portmask */
397                 case 'p':
398                         l2fwd_enabled_port_mask = l2fwd_parse_portmask(optarg);
399                         if (l2fwd_enabled_port_mask == 0) {
400                                 printf("invalid portmask\n");
401                                 l2fwd_usage(prgname);
402                                 return -1;
403                         }
404                         break;
405
406                 /* nqueue */
407                 case 'q':
408                         l2fwd_rx_queue_per_lcore = l2fwd_parse_nqueue(optarg);
409                         if (l2fwd_rx_queue_per_lcore == 0) {
410                                 printf("invalid queue number\n");
411                                 l2fwd_usage(prgname);
412                                 return -1;
413                         }
414                         break;
415
416                 /* timer period */
417                 case 'T':
418                         timer_secs = l2fwd_parse_timer_period(optarg);
419                         if (timer_secs < 0) {
420                                 printf("invalid timer period\n");
421                                 l2fwd_usage(prgname);
422                                 return -1;
423                         }
424                         timer_period = timer_secs;
425                         break;
426
427                 /* long options */
428                 case 0:
429                         break;
430
431                 default:
432                         l2fwd_usage(prgname);
433                         return -1;
434                 }
435         }
436
437         if (optind >= 0)
438                 argv[optind-1] = prgname;
439
440         ret = optind-1;
441         optind = 1; /* reset getopt lib */
442         return ret;
443 }
444
445 /* Check the link status of all ports in up to 9s, and print them finally */
446 static void
447 check_all_ports_link_status(uint16_t port_num, uint32_t port_mask)
448 {
449 #define CHECK_INTERVAL 100 /* 100ms */
450 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
451         uint16_t portid;
452         uint8_t count, all_ports_up, print_flag = 0;
453         struct rte_eth_link link;
454
455         printf("\nChecking link status");
456         fflush(stdout);
457         for (count = 0; count <= MAX_CHECK_TIME; count++) {
458                 if (force_quit)
459                         return;
460                 all_ports_up = 1;
461                 for (portid = 0; portid < port_num; portid++) {
462                         if (force_quit)
463                                 return;
464                         if ((port_mask & (1 << portid)) == 0)
465                                 continue;
466                         memset(&link, 0, sizeof(link));
467                         rte_eth_link_get_nowait(portid, &link);
468                         /* print link status if flag set */
469                         if (print_flag == 1) {
470                                 if (link.link_status)
471                                         printf(
472                                         "Port%d Link Up. Speed %u Mbps - %s\n",
473                                                 portid, link.link_speed,
474                                 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
475                                         ("full-duplex") : ("half-duplex\n"));
476                                 else
477                                         printf("Port %d Link Down\n", portid);
478                                 continue;
479                         }
480                         /* clear all_ports_up flag if any link down */
481                         if (link.link_status == ETH_LINK_DOWN) {
482                                 all_ports_up = 0;
483                                 break;
484                         }
485                 }
486                 /* after finally printing all link status, get out */
487                 if (print_flag == 1)
488                         break;
489
490                 if (all_ports_up == 0) {
491                         printf(".");
492                         fflush(stdout);
493                         rte_delay_ms(CHECK_INTERVAL);
494                 }
495
496                 /* set the print_flag if all ports up or timeout */
497                 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
498                         print_flag = 1;
499                         printf("done\n");
500                 }
501         }
502 }
503
504 static void
505 signal_handler(int signum)
506 {
507         if (signum == SIGINT || signum == SIGTERM) {
508                 printf("\n\nSignal %d received, preparing to exit...\n",
509                                 signum);
510                 force_quit = true;
511         }
512 }
513
514 int
515 main(int argc, char **argv)
516 {
517         struct lcore_queue_conf *qconf;
518         int ret;
519         uint16_t nb_ports;
520         uint16_t nb_ports_available;
521         uint16_t portid, last_port;
522         unsigned lcore_id, rx_lcore_id;
523         unsigned nb_ports_in_mask = 0;
524         unsigned int nb_lcores = 0;
525         unsigned int nb_mbufs;
526
527         /* init EAL */
528         ret = rte_eal_init(argc, argv);
529         if (ret < 0)
530                 rte_exit(EXIT_FAILURE, "Invalid EAL arguments\n");
531         argc -= ret;
532         argv += ret;
533
534         force_quit = false;
535         signal(SIGINT, signal_handler);
536         signal(SIGTERM, signal_handler);
537
538         /* parse application arguments (after the EAL ones) */
539         ret = l2fwd_parse_args(argc, argv);
540         if (ret < 0)
541                 rte_exit(EXIT_FAILURE, "Invalid L2FWD arguments\n");
542
543         printf("MAC updating %s\n", mac_updating ? "enabled" : "disabled");
544
545         /* convert to number of cycles */
546         timer_period *= rte_get_timer_hz();
547
548         nb_ports = rte_eth_dev_count();
549         if (nb_ports == 0)
550                 rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n");
551
552         /* reset l2fwd_dst_ports */
553         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++)
554                 l2fwd_dst_ports[portid] = 0;
555         last_port = 0;
556
557         /*
558          * Each logical core is assigned a dedicated TX queue on each port.
559          */
560         for (portid = 0; portid < nb_ports; portid++) {
561                 /* skip ports that are not enabled */
562                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
563                         continue;
564
565                 if (nb_ports_in_mask % 2) {
566                         l2fwd_dst_ports[portid] = last_port;
567                         l2fwd_dst_ports[last_port] = portid;
568                 }
569                 else
570                         last_port = portid;
571
572                 nb_ports_in_mask++;
573         }
574         if (nb_ports_in_mask % 2) {
575                 printf("Notice: odd number of ports in portmask.\n");
576                 l2fwd_dst_ports[last_port] = last_port;
577         }
578
579         rx_lcore_id = 0;
580         qconf = NULL;
581
582         /* Initialize the port/queue configuration of each logical core */
583         for (portid = 0; portid < nb_ports; portid++) {
584                 /* skip ports that are not enabled */
585                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
586                         continue;
587
588                 /* get the lcore_id for this port */
589                 while (rte_lcore_is_enabled(rx_lcore_id) == 0 ||
590                        lcore_queue_conf[rx_lcore_id].n_rx_port ==
591                        l2fwd_rx_queue_per_lcore) {
592                         rx_lcore_id++;
593                         if (rx_lcore_id >= RTE_MAX_LCORE)
594                                 rte_exit(EXIT_FAILURE, "Not enough cores\n");
595                 }
596
597                 if (qconf != &lcore_queue_conf[rx_lcore_id]) {
598                         /* Assigned a new logical core in the loop above. */
599                         qconf = &lcore_queue_conf[rx_lcore_id];
600                         nb_lcores++;
601                 }
602
603                 qconf->rx_port_list[qconf->n_rx_port] = portid;
604                 qconf->n_rx_port++;
605                 printf("Lcore %u: RX port %u\n", rx_lcore_id, portid);
606         }
607
608         nb_ports_available = nb_ports;
609
610         nb_mbufs = RTE_MAX(nb_ports * (nb_rxd + nb_txd + MAX_PKT_BURST +
611                 nb_lcores * MEMPOOL_CACHE_SIZE), 8192U);
612
613         /* create the mbuf pool */
614         l2fwd_pktmbuf_pool = rte_pktmbuf_pool_create("mbuf_pool", nb_mbufs,
615                 MEMPOOL_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE,
616                 rte_socket_id());
617         if (l2fwd_pktmbuf_pool == NULL)
618                 rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\n");
619
620         /* Initialise each port */
621         for (portid = 0; portid < nb_ports; portid++) {
622                 struct rte_eth_rxconf rxq_conf;
623                 struct rte_eth_txconf txq_conf;
624                 struct rte_eth_conf local_port_conf = port_conf;
625                 struct rte_eth_dev_info dev_info;
626
627                 /* skip ports that are not enabled */
628                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) {
629                         printf("Skipping disabled port %u\n", portid);
630                         nb_ports_available--;
631                         continue;
632                 }
633                 /* init port */
634                 printf("Initializing port %u... ", portid);
635                 fflush(stdout);
636                 rte_eth_dev_info_get(portid, &dev_info);
637                 if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
638                         local_port_conf.txmode.offloads |=
639                                 DEV_TX_OFFLOAD_MBUF_FAST_FREE;
640                 ret = rte_eth_dev_configure(portid, 1, 1, &local_port_conf);
641                 if (ret < 0)
642                         rte_exit(EXIT_FAILURE, "Cannot configure device: err=%d, port=%u\n",
643                                   ret, portid);
644
645                 ret = rte_eth_dev_adjust_nb_rx_tx_desc(portid, &nb_rxd,
646                                                        &nb_txd);
647                 if (ret < 0)
648                         rte_exit(EXIT_FAILURE,
649                                  "Cannot adjust number of descriptors: err=%d, port=%u\n",
650                                  ret, portid);
651
652                 rte_eth_macaddr_get(portid,&l2fwd_ports_eth_addr[portid]);
653
654                 /* init one RX queue */
655                 fflush(stdout);
656                 rxq_conf = dev_info.default_rxconf;
657                 rxq_conf.offloads = local_port_conf.rxmode.offloads;
658                 ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
659                                              rte_eth_dev_socket_id(portid),
660                                              &rxq_conf,
661                                              l2fwd_pktmbuf_pool);
662                 if (ret < 0)
663                         rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup:err=%d, port=%u\n",
664                                   ret, portid);
665
666                 /* init one TX queue on each port */
667                 fflush(stdout);
668                 txq_conf = dev_info.default_txconf;
669                 txq_conf.txq_flags = ETH_TXQ_FLAGS_IGNORE;
670                 txq_conf.offloads = local_port_conf.txmode.offloads;
671                 ret = rte_eth_tx_queue_setup(portid, 0, nb_txd,
672                                 rte_eth_dev_socket_id(portid),
673                                 &txq_conf);
674                 if (ret < 0)
675                         rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup:err=%d, port=%u\n",
676                                 ret, portid);
677
678                 /* Initialize TX buffers */
679                 tx_buffer[portid] = rte_zmalloc_socket("tx_buffer",
680                                 RTE_ETH_TX_BUFFER_SIZE(MAX_PKT_BURST), 0,
681                                 rte_eth_dev_socket_id(portid));
682                 if (tx_buffer[portid] == NULL)
683                         rte_exit(EXIT_FAILURE, "Cannot allocate buffer for tx on port %u\n",
684                                         portid);
685
686                 rte_eth_tx_buffer_init(tx_buffer[portid], MAX_PKT_BURST);
687
688                 ret = rte_eth_tx_buffer_set_err_callback(tx_buffer[portid],
689                                 rte_eth_tx_buffer_count_callback,
690                                 &port_statistics[portid].dropped);
691                 if (ret < 0)
692                         rte_exit(EXIT_FAILURE,
693                         "Cannot set error callback for tx buffer on port %u\n",
694                                  portid);
695
696                 /* Start device */
697                 ret = rte_eth_dev_start(portid);
698                 if (ret < 0)
699                         rte_exit(EXIT_FAILURE, "rte_eth_dev_start:err=%d, port=%u\n",
700                                   ret, portid);
701
702                 printf("done: \n");
703
704                 rte_eth_promiscuous_enable(portid);
705
706                 printf("Port %u, MAC address: %02X:%02X:%02X:%02X:%02X:%02X\n\n",
707                                 portid,
708                                 l2fwd_ports_eth_addr[portid].addr_bytes[0],
709                                 l2fwd_ports_eth_addr[portid].addr_bytes[1],
710                                 l2fwd_ports_eth_addr[portid].addr_bytes[2],
711                                 l2fwd_ports_eth_addr[portid].addr_bytes[3],
712                                 l2fwd_ports_eth_addr[portid].addr_bytes[4],
713                                 l2fwd_ports_eth_addr[portid].addr_bytes[5]);
714
715                 /* initialize port stats */
716                 memset(&port_statistics, 0, sizeof(port_statistics));
717         }
718
719         if (!nb_ports_available) {
720                 rte_exit(EXIT_FAILURE,
721                         "All available ports are disabled. Please set portmask.\n");
722         }
723
724         check_all_ports_link_status(nb_ports, l2fwd_enabled_port_mask);
725
726         ret = 0;
727         /* launch per-lcore init on every lcore */
728         rte_eal_mp_remote_launch(l2fwd_launch_one_lcore, NULL, CALL_MASTER);
729         RTE_LCORE_FOREACH_SLAVE(lcore_id) {
730                 if (rte_eal_wait_lcore(lcore_id) < 0) {
731                         ret = -1;
732                         break;
733                 }
734         }
735
736         for (portid = 0; portid < nb_ports; portid++) {
737                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
738                         continue;
739                 printf("Closing port %d...", portid);
740                 rte_eth_dev_stop(portid);
741                 rte_eth_dev_close(portid);
742                 printf(" Done\n");
743         }
744         printf("Bye...\n");
745
746         return ret;
747 }