1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2010-2016 Intel Corporation
3 */
4
5 #include <locale.h>
6 #include <stdlib.h>
7 #include <string.h>
8 #include <stdint.h>
9 #include <ctype.h>
10 #include <getopt.h>
11
12 #include <rte_common.h>
13 #include <rte_log.h>
14 #include <rte_malloc.h>
15 #include <rte_memory.h>
16 #include <rte_memcpy.h>
17 #include <rte_eal.h>
18 #include <rte_launch.h>
19 #include <rte_cycles.h>
20 #include <rte_prefetch.h>
21 #include <rte_lcore.h>
22 #include <rte_per_lcore.h>
23 #include <rte_branch_prediction.h>
24 #include <rte_interrupts.h>
25 #include <rte_debug.h>
26 #include <rte_ether.h>
27 #include <rte_ethdev.h>
28 #include <rte_mempool.h>
29 #include <rte_mbuf.h>
30 #include <rte_spinlock.h>
31
32 #include <rte_errno.h>
33 #include <rte_jobstats.h>
34 #include <rte_timer.h>
35 #include <rte_alarm.h>
36 #include <rte_pause.h>
37
38 #define RTE_LOGTYPE_L2FWD RTE_LOGTYPE_USER1
39
40 #define NB_MBUF 8192
41
42 #define MAX_PKT_BURST 32
43 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
44
45 /*
46 * Configurable number of RX/TX ring descriptors
47 */
48 #define RTE_TEST_RX_DESC_DEFAULT 1024
49 #define RTE_TEST_TX_DESC_DEFAULT 1024
50 static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
51 static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;
52
53 /* ethernet addresses of ports */
54 static struct rte_ether_addr l2fwd_ports_eth_addr[RTE_MAX_ETHPORTS];
55
56 /* mask of enabled ports */
57 static uint32_t l2fwd_enabled_port_mask;
58
59 /* list of enabled ports */
60 static uint32_t l2fwd_dst_ports[RTE_MAX_ETHPORTS];
61
62 #define UPDATE_STEP_UP 1
63 #define UPDATE_STEP_DOWN 32
64
65 static unsigned int l2fwd_rx_queue_per_lcore = 1;
66
67 #define MAX_RX_QUEUE_PER_LCORE 16
68 #define MAX_TX_QUEUE_PER_PORT 16
69 /* List of queues to be polled for given lcore. 8< */
70 struct lcore_queue_conf {
71 unsigned n_rx_port;
72 unsigned rx_port_list[MAX_RX_QUEUE_PER_LCORE];
73 uint64_t next_flush_time[RTE_MAX_ETHPORTS];
74
75 struct rte_timer rx_timers[MAX_RX_QUEUE_PER_LCORE];
76 struct rte_jobstats port_fwd_jobs[MAX_RX_QUEUE_PER_LCORE];
77
78 struct rte_timer flush_timer;
79 struct rte_jobstats flush_job;
80 struct rte_jobstats idle_job;
81 struct rte_jobstats_context jobs_context;
82
83 uint16_t stats_read_pending;
84 rte_spinlock_t lock;
85 } __rte_cache_aligned;
86 /* >8 End of list of queues to be polled for given lcore. */
87 struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE];
88
89 struct rte_eth_dev_tx_buffer *tx_buffer[RTE_MAX_ETHPORTS];
90
91 static struct rte_eth_conf port_conf = {
92 .rxmode = {
93 .split_hdr_size = 0,
94 },
95 .txmode = {
96 .mq_mode = RTE_ETH_MQ_TX_NONE,
97 },
98 };
99
100 struct rte_mempool *l2fwd_pktmbuf_pool = NULL;
101
102 /* Per-port statistics struct */
103 struct l2fwd_port_statistics {
104 uint64_t tx;
105 uint64_t rx;
106 uint64_t dropped;
107 } __rte_cache_aligned;
108 struct l2fwd_port_statistics port_statistics[RTE_MAX_ETHPORTS];
109
110 /* 1 day max */
111 #define MAX_TIMER_PERIOD 86400
112 /* default period is 10 seconds */
113 static int64_t timer_period = 10;
114 /* default timer frequency */
115 static double hz;
116 /* BURST_TX_DRAIN_US converted to cycles */
117 uint64_t drain_tsc;
118 /* Convert cycles to ns */
119 static inline double
cycles_to_ns(uint64_t cycles)120 cycles_to_ns(uint64_t cycles)
121 {
122 double t = cycles;
123
124 t *= (double)NS_PER_S;
125 t /= hz;
126 return t;
127 }
128
129 static void
show_lcore_stats(unsigned lcore_id)130 show_lcore_stats(unsigned lcore_id)
131 {
132 struct lcore_queue_conf *qconf = &lcore_queue_conf[lcore_id];
133 struct rte_jobstats_context *ctx = &qconf->jobs_context;
134 struct rte_jobstats *job;
135 uint8_t i;
136
137 /* LCore statistics. */
138 uint64_t stats_period, loop_count;
139 uint64_t exec, exec_min, exec_max;
140 uint64_t management, management_min, management_max;
141 uint64_t busy, busy_min, busy_max;
142
143 /* Jobs statistics. */
144 const uint16_t port_cnt = qconf->n_rx_port;
145 uint64_t jobs_exec_cnt[port_cnt], jobs_period[port_cnt];
146 uint64_t jobs_exec[port_cnt], jobs_exec_min[port_cnt],
147 jobs_exec_max[port_cnt];
148
149 uint64_t flush_exec_cnt, flush_period;
150 uint64_t flush_exec, flush_exec_min, flush_exec_max;
151
152 uint64_t idle_exec_cnt;
153 uint64_t idle_exec, idle_exec_min, idle_exec_max;
154 uint64_t collection_time = rte_get_timer_cycles();
155
156 /* Ask forwarding thread to give us stats. */
157 __atomic_store_n(&qconf->stats_read_pending, 1, __ATOMIC_RELAXED);
158 rte_spinlock_lock(&qconf->lock);
159 __atomic_store_n(&qconf->stats_read_pending, 0, __ATOMIC_RELAXED);
160
161 /* Collect context statistics. */
162 stats_period = ctx->state_time - ctx->start_time;
163 loop_count = ctx->loop_cnt;
164
165 exec = ctx->exec_time;
166 exec_min = ctx->min_exec_time;
167 exec_max = ctx->max_exec_time;
168
169 management = ctx->management_time;
170 management_min = ctx->min_management_time;
171 management_max = ctx->max_management_time;
172
173 rte_jobstats_context_reset(ctx);
174
175 for (i = 0; i < port_cnt; i++) {
176 job = &qconf->port_fwd_jobs[i];
177
178 jobs_exec_cnt[i] = job->exec_cnt;
179 jobs_period[i] = job->period;
180
181 jobs_exec[i] = job->exec_time;
182 jobs_exec_min[i] = job->min_exec_time;
183 jobs_exec_max[i] = job->max_exec_time;
184
185 rte_jobstats_reset(job);
186 }
187
188 flush_exec_cnt = qconf->flush_job.exec_cnt;
189 flush_period = qconf->flush_job.period;
190 flush_exec = qconf->flush_job.exec_time;
191 flush_exec_min = qconf->flush_job.min_exec_time;
192 flush_exec_max = qconf->flush_job.max_exec_time;
193 rte_jobstats_reset(&qconf->flush_job);
194
195 idle_exec_cnt = qconf->idle_job.exec_cnt;
196 idle_exec = qconf->idle_job.exec_time;
197 idle_exec_min = qconf->idle_job.min_exec_time;
198 idle_exec_max = qconf->idle_job.max_exec_time;
199 rte_jobstats_reset(&qconf->idle_job);
200
201 rte_spinlock_unlock(&qconf->lock);
202
203 exec -= idle_exec;
204 busy = exec + management;
205 busy_min = exec_min + management_min;
206 busy_max = exec_max + management_max;
207
208
209 collection_time = rte_get_timer_cycles() - collection_time;
210
211 #define STAT_FMT "\n%-18s %'14.0f %6.1f%% %'10.0f %'10.0f %'10.0f"
212
213 printf("\n----------------"
214 "\nLCore %3u: statistics (time in ns, collected in %'9.0f)"
215 "\n%-18s %14s %7s %10s %10s %10s "
216 "\n%-18s %'14.0f"
217 "\n%-18s %'14" PRIu64
218 STAT_FMT /* Exec */
219 STAT_FMT /* Management */
220 STAT_FMT /* Busy */
221 STAT_FMT, /* Idle */
222 lcore_id, cycles_to_ns(collection_time),
223 "Stat type", "total", "%total", "avg", "min", "max",
224 "Stats duration:", cycles_to_ns(stats_period),
225 "Loop count:", loop_count,
226 "Exec time",
227 cycles_to_ns(exec), exec * 100.0 / stats_period,
228 cycles_to_ns(loop_count ? exec / loop_count : 0),
229 cycles_to_ns(exec_min),
230 cycles_to_ns(exec_max),
231 "Management time",
232 cycles_to_ns(management), management * 100.0 / stats_period,
233 cycles_to_ns(loop_count ? management / loop_count : 0),
234 cycles_to_ns(management_min),
235 cycles_to_ns(management_max),
236 "Exec + management",
237 cycles_to_ns(busy), busy * 100.0 / stats_period,
238 cycles_to_ns(loop_count ? busy / loop_count : 0),
239 cycles_to_ns(busy_min),
240 cycles_to_ns(busy_max),
241 "Idle (job)",
242 cycles_to_ns(idle_exec), idle_exec * 100.0 / stats_period,
243 cycles_to_ns(idle_exec_cnt ? idle_exec / idle_exec_cnt : 0),
244 cycles_to_ns(idle_exec_min),
245 cycles_to_ns(idle_exec_max));
246
247 for (i = 0; i < qconf->n_rx_port; i++) {
248 job = &qconf->port_fwd_jobs[i];
249 printf("\n\nJob %" PRIu32 ": %-20s "
250 "\n%-18s %'14" PRIu64
251 "\n%-18s %'14.0f"
252 STAT_FMT,
253 i, job->name,
254 "Exec count:", jobs_exec_cnt[i],
255 "Exec period: ", cycles_to_ns(jobs_period[i]),
256 "Exec time",
257 cycles_to_ns(jobs_exec[i]), jobs_exec[i] * 100.0 / stats_period,
258 cycles_to_ns(jobs_exec_cnt[i] ? jobs_exec[i] / jobs_exec_cnt[i]
259 : 0),
260 cycles_to_ns(jobs_exec_min[i]),
261 cycles_to_ns(jobs_exec_max[i]));
262 }
263
264 if (qconf->n_rx_port > 0) {
265 job = &qconf->flush_job;
266 printf("\n\nJob %" PRIu32 ": %-20s "
267 "\n%-18s %'14" PRIu64
268 "\n%-18s %'14.0f"
269 STAT_FMT,
270 i, job->name,
271 "Exec count:", flush_exec_cnt,
272 "Exec period: ", cycles_to_ns(flush_period),
273 "Exec time",
274 cycles_to_ns(flush_exec), flush_exec * 100.0 / stats_period,
275 cycles_to_ns(flush_exec_cnt ? flush_exec / flush_exec_cnt : 0),
276 cycles_to_ns(flush_exec_min),
277 cycles_to_ns(flush_exec_max));
278 }
279 }
280
281 /* Print out statistics on packets dropped */
282 static void
show_stats_cb(__rte_unused void * param)283 show_stats_cb(__rte_unused void *param)
284 {
285 uint64_t total_packets_dropped, total_packets_tx, total_packets_rx;
286 unsigned portid, lcore_id;
287
288 total_packets_dropped = 0;
289 total_packets_tx = 0;
290 total_packets_rx = 0;
291
292 const char clr[] = { 27, '[', '2', 'J', '\0' };
293 const char topLeft[] = { 27, '[', '1', ';', '1', 'H', '\0' };
294
295 /* Clear screen and move to top left */
296 printf("%s%s"
297 "\nPort statistics ===================================",
298 clr, topLeft);
299
300 for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
301 /* skip disabled ports */
302 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
303 continue;
304 printf("\nStatistics for port %u ------------------------------"
305 "\nPackets sent: %24"PRIu64
306 "\nPackets received: %20"PRIu64
307 "\nPackets dropped: %21"PRIu64,
308 portid,
309 port_statistics[portid].tx,
310 port_statistics[portid].rx,
311 port_statistics[portid].dropped);
312
313 total_packets_dropped += port_statistics[portid].dropped;
314 total_packets_tx += port_statistics[portid].tx;
315 total_packets_rx += port_statistics[portid].rx;
316 }
317
318 printf("\nAggregate statistics ==============================="
319 "\nTotal packets sent: %18"PRIu64
320 "\nTotal packets received: %14"PRIu64
321 "\nTotal packets dropped: %15"PRIu64
322 "\n====================================================",
323 total_packets_tx,
324 total_packets_rx,
325 total_packets_dropped);
326
327 RTE_LCORE_FOREACH(lcore_id) {
328 if (lcore_queue_conf[lcore_id].n_rx_port > 0)
329 show_lcore_stats(lcore_id);
330 }
331
332 printf("\n====================================================\n");
333
334 fflush(stdout);
335
336 rte_eal_alarm_set(timer_period * US_PER_S, show_stats_cb, NULL);
337 }
338
339 /* Start of l2fwd_simple_forward. 8< */
340 static void
l2fwd_simple_forward(struct rte_mbuf * m,unsigned portid)341 l2fwd_simple_forward(struct rte_mbuf *m, unsigned portid)
342 {
343 struct rte_ether_hdr *eth;
344 void *tmp;
345 int sent;
346 unsigned dst_port;
347 struct rte_eth_dev_tx_buffer *buffer;
348
349 dst_port = l2fwd_dst_ports[portid];
350 eth = rte_pktmbuf_mtod(m, struct rte_ether_hdr *);
351
352 /* 02:00:00:00:00:xx */
353 tmp = ð->dst_addr.addr_bytes[0];
354 *((uint64_t *)tmp) = 0x000000000002 + ((uint64_t)dst_port << 40);
355
356 /* src addr */
357 rte_ether_addr_copy(&l2fwd_ports_eth_addr[dst_port], ð->src_addr);
358
359 buffer = tx_buffer[dst_port];
360 sent = rte_eth_tx_buffer(dst_port, 0, buffer, m);
361 if (sent)
362 port_statistics[dst_port].tx += sent;
363 }
364 /* >8 End of l2fwd_simple_forward. */
365
366 static void
l2fwd_job_update_cb(struct rte_jobstats * job,int64_t result)367 l2fwd_job_update_cb(struct rte_jobstats *job, int64_t result)
368 {
369 int64_t err = job->target - result;
370 int64_t histeresis = job->target / 8;
371
372 if (err < -histeresis) {
373 if (job->min_period + UPDATE_STEP_DOWN < job->period)
374 job->period -= UPDATE_STEP_DOWN;
375 } else if (err > histeresis) {
376 if (job->period + UPDATE_STEP_UP < job->max_period)
377 job->period += UPDATE_STEP_UP;
378 }
379 }
380
381 static void
l2fwd_fwd_job(__rte_unused struct rte_timer * timer,void * arg)382 l2fwd_fwd_job(__rte_unused struct rte_timer *timer, void *arg)
383 {
384 struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
385 struct rte_mbuf *m;
386
387 const uint16_t port_idx = (uintptr_t) arg;
388 const unsigned lcore_id = rte_lcore_id();
389 struct lcore_queue_conf *qconf = &lcore_queue_conf[lcore_id];
390 struct rte_jobstats *job = &qconf->port_fwd_jobs[port_idx];
391 const uint16_t portid = qconf->rx_port_list[port_idx];
392
393 uint8_t j;
394 uint16_t total_nb_rx;
395
396 rte_jobstats_start(&qconf->jobs_context, job);
397
398 /* Call rx burst 2 times. This allow rte_jobstats logic to see if this
399 * function must be called more frequently. */
400
401 /* Call rx burst 2 times. 8< */
402 total_nb_rx = rte_eth_rx_burst(portid, 0, pkts_burst,
403 MAX_PKT_BURST);
404
405 for (j = 0; j < total_nb_rx; j++) {
406 m = pkts_burst[j];
407 rte_prefetch0(rte_pktmbuf_mtod(m, void *));
408 l2fwd_simple_forward(m, portid);
409 }
410 /* >8 End of call rx burst 2 times. */
411
412 /* Read second try. 8< */
413 if (total_nb_rx == MAX_PKT_BURST) {
414 const uint16_t nb_rx = rte_eth_rx_burst(portid, 0, pkts_burst,
415 MAX_PKT_BURST);
416
417 total_nb_rx += nb_rx;
418 for (j = 0; j < nb_rx; j++) {
419 m = pkts_burst[j];
420 rte_prefetch0(rte_pktmbuf_mtod(m, void *));
421 l2fwd_simple_forward(m, portid);
422 }
423 }
424 /* >8 End of read second try. */
425
426 port_statistics[portid].rx += total_nb_rx;
427
428 /* Adjust period time in which we are running here. 8< */
429 if (rte_jobstats_finish(job, total_nb_rx) != 0) {
430 rte_timer_reset(&qconf->rx_timers[port_idx], job->period, PERIODICAL,
431 lcore_id, l2fwd_fwd_job, arg);
432 }
433 /* >8 End of adjust period time in which we are running. */
434 }
435
436 /* Draining TX queue of each port. 8< */
437 static void
l2fwd_flush_job(__rte_unused struct rte_timer * timer,__rte_unused void * arg)438 l2fwd_flush_job(__rte_unused struct rte_timer *timer, __rte_unused void *arg)
439 {
440 uint64_t now;
441 unsigned lcore_id;
442 struct lcore_queue_conf *qconf;
443 uint16_t portid;
444 unsigned i;
445 uint32_t sent;
446 struct rte_eth_dev_tx_buffer *buffer;
447
448 lcore_id = rte_lcore_id();
449 qconf = &lcore_queue_conf[lcore_id];
450
451 rte_jobstats_start(&qconf->jobs_context, &qconf->flush_job);
452
453 now = rte_get_timer_cycles();
454 lcore_id = rte_lcore_id();
455 qconf = &lcore_queue_conf[lcore_id];
456
457 for (i = 0; i < qconf->n_rx_port; i++) {
458 portid = l2fwd_dst_ports[qconf->rx_port_list[i]];
459
460 if (qconf->next_flush_time[portid] <= now)
461 continue;
462
463 buffer = tx_buffer[portid];
464 sent = rte_eth_tx_buffer_flush(portid, 0, buffer);
465 if (sent)
466 port_statistics[portid].tx += sent;
467
468 qconf->next_flush_time[portid] = rte_get_timer_cycles() + drain_tsc;
469 }
470
471 /* Pass target to indicate that this job is happy of time interval
472 * in which it was called. */
473 rte_jobstats_finish(&qconf->flush_job, qconf->flush_job.target);
474 }
475 /* >8 End of draining TX queue of each port. */
476
477 /* main processing loop */
478 static void
l2fwd_main_loop(void)479 l2fwd_main_loop(void)
480 {
481 unsigned lcore_id;
482 unsigned i, portid;
483 struct lcore_queue_conf *qconf;
484 uint8_t stats_read_pending = 0;
485 uint8_t need_manage;
486
487 lcore_id = rte_lcore_id();
488 qconf = &lcore_queue_conf[lcore_id];
489
490 if (qconf->n_rx_port == 0) {
491 RTE_LOG(INFO, L2FWD, "lcore %u has nothing to do\n", lcore_id);
492 return;
493 }
494
495 RTE_LOG(INFO, L2FWD, "entering main loop on lcore %u\n", lcore_id);
496
497 for (i = 0; i < qconf->n_rx_port; i++) {
498
499 portid = qconf->rx_port_list[i];
500 RTE_LOG(INFO, L2FWD, " -- lcoreid=%u portid=%u\n", lcore_id,
501 portid);
502 }
503
504 rte_jobstats_init(&qconf->idle_job, "idle", 0, 0, 0, 0);
505
506 /* Minimize impact of stats reading. 8< */
507 for (;;) {
508 rte_spinlock_lock(&qconf->lock);
509
510 do {
511 rte_jobstats_context_start(&qconf->jobs_context);
512
513 /* Do the Idle job:
514 * - Read stats_read_pending flag
515 * - check if some real job need to be executed
516 */
517 rte_jobstats_start(&qconf->jobs_context, &qconf->idle_job);
518
519 uint64_t repeats = 0;
520
521 do {
522 uint8_t i;
523 uint64_t now = rte_get_timer_cycles();
524
525 repeats++;
526 need_manage = qconf->flush_timer.expire < now;
527 /* Check if we was esked to give a stats. */
528 stats_read_pending = __atomic_load_n(&qconf->stats_read_pending,
529 __ATOMIC_RELAXED);
530 need_manage |= stats_read_pending;
531
532 for (i = 0; i < qconf->n_rx_port && !need_manage; i++)
533 need_manage = qconf->rx_timers[i].expire < now;
534
535 } while (!need_manage);
536
537 if (likely(repeats != 1))
538 rte_jobstats_finish(&qconf->idle_job, qconf->idle_job.target);
539 else
540 rte_jobstats_abort(&qconf->idle_job);
541
542 rte_timer_manage();
543 rte_jobstats_context_finish(&qconf->jobs_context);
544 } while (likely(stats_read_pending == 0));
545
546 rte_spinlock_unlock(&qconf->lock);
547 rte_pause();
548 }
549 /* >8 End of minimize impact of stats reading. */
550 }
551
552 static int
l2fwd_launch_one_lcore(__rte_unused void * dummy)553 l2fwd_launch_one_lcore(__rte_unused void *dummy)
554 {
555 l2fwd_main_loop();
556 return 0;
557 }
558
559 /* display usage */
560 static void
l2fwd_usage(const char * prgname)561 l2fwd_usage(const char *prgname)
562 {
563 printf("%s [EAL options] -- -p PORTMASK [-q NQ]\n"
564 " -p PORTMASK: hexadecimal bitmask of ports to configure\n"
565 " -q NQ: number of queue (=ports) per lcore (default is 1)\n"
566 " -T PERIOD: statistics will be refreshed each PERIOD seconds (0 to disable, 10 default, 86400 maximum)\n"
567 " -l set system default locale instead of default (\"C\" locale) for thousands separator in stats.",
568 prgname);
569 }
570
571 static int
l2fwd_parse_portmask(const char * portmask)572 l2fwd_parse_portmask(const char *portmask)
573 {
574 char *end = NULL;
575 unsigned long pm;
576
577 /* parse hexadecimal string */
578 pm = strtoul(portmask, &end, 16);
579 if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
580 return 0;
581
582 return pm;
583 }
584
585 static unsigned int
l2fwd_parse_nqueue(const char * q_arg)586 l2fwd_parse_nqueue(const char *q_arg)
587 {
588 char *end = NULL;
589 unsigned long n;
590
591 /* parse hexadecimal string */
592 n = strtoul(q_arg, &end, 10);
593 if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
594 return 0;
595 if (n == 0)
596 return 0;
597 if (n >= MAX_RX_QUEUE_PER_LCORE)
598 return 0;
599
600 return n;
601 }
602
603 static int
l2fwd_parse_timer_period(const char * q_arg)604 l2fwd_parse_timer_period(const char *q_arg)
605 {
606 char *end = NULL;
607 int n;
608
609 /* parse number string */
610 n = strtol(q_arg, &end, 10);
611 if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
612 return -1;
613 if (n >= MAX_TIMER_PERIOD)
614 return -1;
615
616 return n;
617 }
618
619 /* Parse the argument given in the command line of the application */
620 static int
l2fwd_parse_args(int argc,char ** argv)621 l2fwd_parse_args(int argc, char **argv)
622 {
623 int opt, ret;
624 char **argvopt;
625 int option_index;
626 char *prgname = argv[0];
627 static struct option lgopts[] = {
628 {NULL, 0, 0, 0}
629 };
630
631 argvopt = argv;
632
633 while ((opt = getopt_long(argc, argvopt, "p:q:T:l",
634 lgopts, &option_index)) != EOF) {
635
636 switch (opt) {
637 /* portmask */
638 case 'p':
639 l2fwd_enabled_port_mask = l2fwd_parse_portmask(optarg);
640 if (l2fwd_enabled_port_mask == 0) {
641 printf("invalid portmask\n");
642 l2fwd_usage(prgname);
643 return -1;
644 }
645 break;
646
647 /* nqueue */
648 case 'q':
649 l2fwd_rx_queue_per_lcore = l2fwd_parse_nqueue(optarg);
650 if (l2fwd_rx_queue_per_lcore == 0) {
651 printf("invalid queue number\n");
652 l2fwd_usage(prgname);
653 return -1;
654 }
655 break;
656
657 /* timer period */
658 case 'T':
659 timer_period = l2fwd_parse_timer_period(optarg);
660 if (timer_period < 0) {
661 printf("invalid timer period\n");
662 l2fwd_usage(prgname);
663 return -1;
664 }
665 break;
666
667 /* For thousands separator in printf. */
668 case 'l':
669 setlocale(LC_ALL, "");
670 break;
671
672 /* long options */
673 case 0:
674 l2fwd_usage(prgname);
675 return -1;
676
677 default:
678 l2fwd_usage(prgname);
679 return -1;
680 }
681 }
682
683 if (optind >= 0)
684 argv[optind-1] = prgname;
685
686 ret = optind-1;
687 optind = 1; /* reset getopt lib */
688 return ret;
689 }
690
691 /* Check the link status of all ports in up to 9s, and print them finally */
692 static void
check_all_ports_link_status(uint32_t port_mask)693 check_all_ports_link_status(uint32_t port_mask)
694 {
695 #define CHECK_INTERVAL 100 /* 100ms */
696 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
697 uint16_t portid;
698 uint8_t count, all_ports_up, print_flag = 0;
699 struct rte_eth_link link;
700 int ret;
701 char link_status_text[RTE_ETH_LINK_MAX_STR_LEN];
702
703 printf("\nChecking link status");
704 fflush(stdout);
705 for (count = 0; count <= MAX_CHECK_TIME; count++) {
706 all_ports_up = 1;
707 RTE_ETH_FOREACH_DEV(portid) {
708 if ((port_mask & (1 << portid)) == 0)
709 continue;
710 memset(&link, 0, sizeof(link));
711 ret = rte_eth_link_get_nowait(portid, &link);
712 if (ret < 0) {
713 all_ports_up = 0;
714 if (print_flag == 1)
715 printf("Port %u link get failed: %s\n",
716 portid, rte_strerror(-ret));
717 continue;
718 }
719 /* print link status if flag set */
720 if (print_flag == 1) {
721 rte_eth_link_to_str(link_status_text,
722 sizeof(link_status_text), &link);
723 printf("Port %d %s\n", portid,
724 link_status_text);
725 continue;
726 }
727 /* clear all_ports_up flag if any link down */
728 if (link.link_status == RTE_ETH_LINK_DOWN) {
729 all_ports_up = 0;
730 break;
731 }
732 }
733 /* after finally printing all link status, get out */
734 if (print_flag == 1)
735 break;
736
737 if (all_ports_up == 0) {
738 printf(".");
739 fflush(stdout);
740 rte_delay_ms(CHECK_INTERVAL);
741 }
742
743 /* set the print_flag if all ports up or timeout */
744 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
745 print_flag = 1;
746 printf("done\n");
747 }
748 }
749 }
750
751 int
main(int argc,char ** argv)752 main(int argc, char **argv)
753 {
754 struct lcore_queue_conf *qconf;
755 unsigned lcore_id, rx_lcore_id;
756 unsigned nb_ports_in_mask = 0;
757 int ret;
758 char name[RTE_JOBSTATS_NAMESIZE];
759 uint16_t nb_ports;
760 uint16_t nb_ports_available = 0;
761 uint16_t portid, last_port;
762 uint8_t i;
763
764 /* Init EAL. 8< */
765 ret = rte_eal_init(argc, argv);
766 if (ret < 0)
767 rte_exit(EXIT_FAILURE, "Invalid EAL arguments\n");
768 argc -= ret;
769 argv += ret;
770
771 /* parse application arguments (after the EAL ones) */
772 ret = l2fwd_parse_args(argc, argv);
773 if (ret < 0)
774 rte_exit(EXIT_FAILURE, "Invalid L2FWD arguments\n");
775 /* >8 End of init EAL. */
776
777 rte_timer_subsystem_init();
778
779 /* fetch default timer frequency. */
780 hz = rte_get_timer_hz();
781
782 /* Create the mbuf pool. 8< */
783 l2fwd_pktmbuf_pool =
784 rte_pktmbuf_pool_create("mbuf_pool", NB_MBUF, 32,
785 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
786 if (l2fwd_pktmbuf_pool == NULL)
787 rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\n");
788 /* >8 End of creation of mbuf pool. */
789 nb_ports = rte_eth_dev_count_avail();
790 if (nb_ports == 0)
791 rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n");
792
793 /* Reset l2fwd_dst_ports. 8< */
794 for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++)
795 l2fwd_dst_ports[portid] = 0;
796 last_port = 0;
797
798 /*
799 * Each logical core is assigned a dedicated TX queue on each port.
800 */
801 RTE_ETH_FOREACH_DEV(portid) {
802 /* skip ports that are not enabled */
803 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
804 continue;
805
806 if (nb_ports_in_mask % 2) {
807 l2fwd_dst_ports[portid] = last_port;
808 l2fwd_dst_ports[last_port] = portid;
809 } else
810 last_port = portid;
811
812 nb_ports_in_mask++;
813 }
814 /* >8 End of reset l2fwd_dst_ports. */
815 if (nb_ports_in_mask % 2) {
816 printf("Notice: odd number of ports in portmask.\n");
817 l2fwd_dst_ports[last_port] = last_port;
818 }
819
820 rx_lcore_id = 0;
821 qconf = NULL;
822
823 /* Initialize the port/queue configuration of each logical core */
824 RTE_ETH_FOREACH_DEV(portid) {
825 /* skip ports that are not enabled */
826 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
827 continue;
828
829 /* get the lcore_id for this port */
830 while (rte_lcore_is_enabled(rx_lcore_id) == 0 ||
831 lcore_queue_conf[rx_lcore_id].n_rx_port ==
832 l2fwd_rx_queue_per_lcore) {
833 rx_lcore_id++;
834 if (rx_lcore_id >= RTE_MAX_LCORE)
835 rte_exit(EXIT_FAILURE, "Not enough cores\n");
836 }
837
838 if (qconf != &lcore_queue_conf[rx_lcore_id])
839 /* Assigned a new logical core in the loop above. */
840 qconf = &lcore_queue_conf[rx_lcore_id];
841
842 qconf->rx_port_list[qconf->n_rx_port] = portid;
843 qconf->n_rx_port++;
844 printf("Lcore %u: RX port %u\n", rx_lcore_id, portid);
845 }
846
847 /* Initialise each port */
848 RTE_ETH_FOREACH_DEV(portid) {
849 struct rte_eth_dev_info dev_info;
850 struct rte_eth_rxconf rxq_conf;
851 struct rte_eth_txconf txq_conf;
852 struct rte_eth_conf local_port_conf = port_conf;
853
854 /* skip ports that are not enabled */
855 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) {
856 printf("Skipping disabled port %u\n", portid);
857 continue;
858 }
859 nb_ports_available++;
860
861 /* init port */
862 printf("Initializing port %u... ", portid);
863 fflush(stdout);
864
865 ret = rte_eth_dev_info_get(portid, &dev_info);
866 if (ret != 0)
867 rte_exit(EXIT_FAILURE,
868 "Error during getting device (port %u) info: %s\n",
869 portid, strerror(-ret));
870
871 if (dev_info.tx_offload_capa & RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE)
872 local_port_conf.txmode.offloads |=
873 RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE;
874 /* Configure the RX and TX queues. 8< */
875 ret = rte_eth_dev_configure(portid, 1, 1, &local_port_conf);
876 if (ret < 0)
877 rte_exit(EXIT_FAILURE, "Cannot configure device: err=%d, port=%u\n",
878 ret, portid);
879 /* >8 End of configuring the RX and TX queues. */
880
881 ret = rte_eth_dev_adjust_nb_rx_tx_desc(portid, &nb_rxd,
882 &nb_txd);
883 if (ret < 0)
884 rte_exit(EXIT_FAILURE,
885 "Cannot adjust number of descriptors: err=%d, port=%u\n",
886 ret, portid);
887
888 ret = rte_eth_macaddr_get(portid,
889 &l2fwd_ports_eth_addr[portid]);
890 if (ret < 0)
891 rte_exit(EXIT_FAILURE,
892 "Cannot get MAC address: err=%d, port=%u\n",
893 ret, portid);
894
895 /* init one RX queue */
896 fflush(stdout);
897 rxq_conf = dev_info.default_rxconf;
898 rxq_conf.offloads = local_port_conf.rxmode.offloads;
899 /* RX queue initialization. 8< */
900 ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
901 rte_eth_dev_socket_id(portid),
902 &rxq_conf,
903 l2fwd_pktmbuf_pool);
904 if (ret < 0)
905 rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup:err=%d, port=%u\n",
906 ret, portid);
907 /* >8 End of RX queue initialization. */
908
909 /* Init one TX queue on each port. 8< */
910 txq_conf = dev_info.default_txconf;
911 txq_conf.offloads = local_port_conf.txmode.offloads;
912 fflush(stdout);
913 ret = rte_eth_tx_queue_setup(portid, 0, nb_txd,
914 rte_eth_dev_socket_id(portid),
915 &txq_conf);
916 if (ret < 0)
917 rte_exit(EXIT_FAILURE,
918 "rte_eth_tx_queue_setup:err=%d, port=%u\n",
919 ret, portid);
920 /* >8 End of init one TX queue on each port. */
921
922 /* Initialize TX buffers */
923 tx_buffer[portid] = rte_zmalloc_socket("tx_buffer",
924 RTE_ETH_TX_BUFFER_SIZE(MAX_PKT_BURST), 0,
925 rte_eth_dev_socket_id(portid));
926 if (tx_buffer[portid] == NULL)
927 rte_exit(EXIT_FAILURE, "Cannot allocate buffer for tx on port %u\n",
928 portid);
929
930 rte_eth_tx_buffer_init(tx_buffer[portid], MAX_PKT_BURST);
931
932 ret = rte_eth_tx_buffer_set_err_callback(tx_buffer[portid],
933 rte_eth_tx_buffer_count_callback,
934 &port_statistics[portid].dropped);
935 if (ret < 0)
936 rte_exit(EXIT_FAILURE,
937 "Cannot set error callback for tx buffer on port %u\n",
938 portid);
939
940 /* Start device */
941 ret = rte_eth_dev_start(portid);
942 if (ret < 0)
943 rte_exit(EXIT_FAILURE, "rte_eth_dev_start:err=%d, port=%u\n",
944 ret, portid);
945
946 printf("done:\n");
947
948 ret = rte_eth_promiscuous_enable(portid);
949 if (ret != 0) {
950 rte_exit(EXIT_FAILURE,
951 "rte_eth_promiscuous_enable:err=%s, port=%u\n",
952 rte_strerror(-ret), portid);
953 return ret;
954
955 }
956
957 printf("Port %u, MAC address: " RTE_ETHER_ADDR_PRT_FMT "\n\n",
958 portid,
959 RTE_ETHER_ADDR_BYTES(&l2fwd_ports_eth_addr[portid]));
960
961 /* initialize port stats */
962 memset(&port_statistics, 0, sizeof(port_statistics));
963 }
964
965 if (!nb_ports_available) {
966 rte_exit(EXIT_FAILURE,
967 "All available ports are disabled. Please set portmask.\n");
968 }
969
970 check_all_ports_link_status(l2fwd_enabled_port_mask);
971
972 drain_tsc = (hz + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US;
973
974 RTE_LCORE_FOREACH(lcore_id) {
975 qconf = &lcore_queue_conf[lcore_id];
976
977 rte_spinlock_init(&qconf->lock);
978
979 if (rte_jobstats_context_init(&qconf->jobs_context) != 0)
980 rte_panic("Jobs stats context for core %u init failed\n", lcore_id);
981
982 if (qconf->n_rx_port == 0) {
983 RTE_LOG(INFO, L2FWD,
984 "lcore %u: no ports so no jobs stats context initialization\n",
985 lcore_id);
986 continue;
987 }
988 /* Add flush job. 8< */
989
990 /* Set fixed period by setting min = max = initial period. Set target to
991 * zero as it is irrelevant for this job.
992 */
993 rte_jobstats_init(&qconf->flush_job, "flush", drain_tsc, drain_tsc,
994 drain_tsc, 0);
995
996 rte_timer_init(&qconf->flush_timer);
997 ret = rte_timer_reset(&qconf->flush_timer, drain_tsc, PERIODICAL,
998 lcore_id, &l2fwd_flush_job, NULL);
999
1000 if (ret < 0) {
1001 rte_exit(1, "Failed to reset flush job timer for lcore %u: %s",
1002 lcore_id, rte_strerror(-ret));
1003 }
1004 /* >8 End of add flush job. */
1005
1006 for (i = 0; i < qconf->n_rx_port; i++) {
1007 struct rte_jobstats *job = &qconf->port_fwd_jobs[i];
1008
1009 portid = qconf->rx_port_list[i];
1010 printf("Setting forward job for port %u\n", portid);
1011
1012 snprintf(name, RTE_DIM(name), "port %u fwd", portid);
1013 /* Setup forward job. 8< */
1014
1015 /* Set min, max and initial period. Set target to MAX_PKT_BURST as
1016 * this is desired optimal RX/TX burst size.
1017 */
1018 rte_jobstats_init(job, name, 0, drain_tsc, 0, MAX_PKT_BURST);
1019 rte_jobstats_set_update_period_function(job, l2fwd_job_update_cb);
1020
1021 rte_timer_init(&qconf->rx_timers[i]);
1022 ret = rte_timer_reset(&qconf->rx_timers[i], 0, PERIODICAL, lcore_id,
1023 &l2fwd_fwd_job, (void *)(uintptr_t)i);
1024
1025 if (ret < 0) {
1026 rte_exit(1, "Failed to reset lcore %u port %u job timer: %s",
1027 lcore_id, qconf->rx_port_list[i], rte_strerror(-ret));
1028 }
1029 /* >8 End of forward job. */
1030 }
1031 }
1032
1033 if (timer_period)
1034 rte_eal_alarm_set(timer_period * MS_PER_S, show_stats_cb, NULL);
1035 else
1036 RTE_LOG(INFO, L2FWD, "Stats display disabled\n");
1037
1038 /* launch per-lcore init on every lcore */
1039 rte_eal_mp_remote_launch(l2fwd_launch_one_lcore, NULL, CALL_MAIN);
1040 RTE_LCORE_FOREACH_WORKER(lcore_id) {
1041 if (rte_eal_wait_lcore(lcore_id) < 0)
1042 return -1;
1043 }
1044
1045 /* clean up the EAL */
1046 rte_eal_cleanup();
1047
1048 return 0;
1049 }
1050