examples/eventdev_pipeline/main.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2016-2017 Intel Corporation
   3  */
   4
   5 #include <getopt.h>
   6 #include <stdint.h>
   7 #include <stdio.h>
   8 #include <signal.h>
   9 #include <sched.h>
  10
  11 #include "pipeline_common.h"
  12
  13 struct config_data cdata = {
  14         .num_packets = (1L << 25), /* do ~32M packets */
  15         .num_fids = 512,
  16         .queue_type = RTE_SCHED_TYPE_ATOMIC,
  17         .next_qid = {-1},
  18         .qid = {-1},
  19         .num_stages = 1,
  20         .worker_cq_depth = 16
  21 };
  22
  23 static bool
  24 core_in_use(unsigned int lcore_id) {
  25         return (fdata->rx_core[lcore_id] || fdata->sched_core[lcore_id] ||
  26                 fdata->tx_core[lcore_id] || fdata->worker_core[lcore_id]);
  27 }
  28
  29 static void
  30 eth_tx_buffer_retry(struct rte_mbuf **pkts, uint16_t unsent,
  31                         void *userdata)
  32 {
  33         int port_id = (uintptr_t) userdata;
  34         unsigned int _sent = 0;
  35
  36         do {
  37                 /* Note: hard-coded TX queue */
  38                 _sent += rte_eth_tx_burst(port_id, 0, &pkts[_sent],
  39                                           unsent - _sent);
  40         } while (_sent != unsent);
  41 }
  42
  43 /*
  44  * Parse the coremask given as argument (hexadecimal string) and fill
  45  * the global configuration (core role and core count) with the parsed
  46  * value.
  47  */
  48 static int xdigit2val(unsigned char c)
  49 {
  50         int val;
  51
  52         if (isdigit(c))
  53                 val = c - '0';
  54         else if (isupper(c))
  55                 val = c - 'A' + 10;
  56         else
  57                 val = c - 'a' + 10;
  58         return val;
  59 }
  60
  61 static uint64_t
  62 parse_coremask(const char *coremask)
  63 {
  64         int i, j, idx = 0;
  65         unsigned int count = 0;
  66         char c;
  67         int val;
  68         uint64_t mask = 0;
  69         const int32_t BITS_HEX = 4;
  70
  71         if (coremask == NULL)
  72                 return -1;
  73         /* Remove all blank characters ahead and after .
  74          * Remove 0x/0X if exists.
  75          */
  76         while (isblank(*coremask))
  77                 coremask++;
  78         if (coremask[0] == '0' && ((coremask[1] == 'x')
  79                 || (coremask[1] == 'X')))
  80                 coremask += 2;
  81         i = strlen(coremask);
  82         while ((i > 0) && isblank(coremask[i - 1]))
  83                 i--;
  84         if (i == 0)
  85                 return -1;
  86
  87         for (i = i - 1; i >= 0 && idx < MAX_NUM_CORE; i--) {
  88                 c = coremask[i];
  89                 if (isxdigit(c) == 0) {
  90                         /* invalid characters */
  91                         return -1;
  92                 }
  93                 val = xdigit2val(c);
  94                 for (j = 0; j < BITS_HEX && idx < MAX_NUM_CORE; j++, idx++) {
  95                         if ((1 << j) & val) {
  96                                 mask |= (1UL << idx);
  97                                 count++;
  98                         }
  99                 }
 100         }
 101         for (; i >= 0; i--)
 102                 if (coremask[i] != '0')
 103                         return -1;
 104         if (count == 0)
 105                 return -1;
 106         return mask;
 107 }
 108
 109 static struct option long_options[] = {
 110         {"workers", required_argument, 0, 'w'},
 111         {"packets", required_argument, 0, 'n'},
 112         {"atomic-flows", required_argument, 0, 'f'},
 113         {"num_stages", required_argument, 0, 's'},
 114         {"rx-mask", required_argument, 0, 'r'},
 115         {"tx-mask", required_argument, 0, 't'},
 116         {"sched-mask", required_argument, 0, 'e'},
 117         {"cq-depth", required_argument, 0, 'c'},
 118         {"work-cycles", required_argument, 0, 'W'},
 119         {"mempool-size", required_argument, 0, 'm'},
 120         {"queue-priority", no_argument, 0, 'P'},
 121         {"parallel", no_argument, 0, 'p'},
 122         {"ordered", no_argument, 0, 'o'},
 123         {"quiet", no_argument, 0, 'q'},
 124         {"use-atq", no_argument, 0, 'a'},
 125         {"dump", no_argument, 0, 'D'},
 126         {0, 0, 0, 0}
 127 };
 128
 129 static void
 130 usage(void)
 131 {
 132         const char *usage_str =
 133                 "  Usage: eventdev_demo [options]\n"
 134                 "  Options:\n"
 135                 "  -n, --packets=N              Send N packets (default ~32M), 0 implies no limit\n"
 136                 "  -f, --atomic-flows=N         Use N random flows from 1 to N (default 16)\n"
 137                 "  -s, --num_stages=N           Use N atomic stages (default 1)\n"
 138                 "  -r, --rx-mask=core mask      Run NIC rx on CPUs in core mask\n"
 139                 "  -w, --worker-mask=core mask  Run worker on CPUs in core mask\n"
 140                 "  -t, --tx-mask=core mask      Run NIC tx on CPUs in core mask\n"
 141                 "  -e  --sched-mask=core mask   Run scheduler on CPUs in core mask\n"
 142                 "  -c  --cq-depth=N             Worker CQ depth (default 16)\n"
 143                 "  -W  --work-cycles=N          Worker cycles (default 0)\n"
 144                 "  -P  --queue-priority         Enable scheduler queue prioritization\n"
 145                 "  -o, --ordered                Use ordered scheduling\n"
 146                 "  -p, --parallel               Use parallel scheduling\n"
 147                 "  -q, --quiet                  Minimize printed output\n"
 148                 "  -a, --use-atq                Use all type queues\n"
 149                 "  -m, --mempool-size=N         Dictate the mempool size\n"
 150                 "  -D, --dump                   Print detailed statistics before exit"
 151                 "\n";
 152         fprintf(stderr, "%s", usage_str);
 153         exit(1);
 154 }
 155
 156 static void
 157 parse_app_args(int argc, char **argv)
 158 {
 159         /* Parse cli options*/
 160         int option_index;
 161         int c;
 162         opterr = 0;
 163         uint64_t rx_lcore_mask = 0;
 164         uint64_t tx_lcore_mask = 0;
 165         uint64_t sched_lcore_mask = 0;
 166         uint64_t worker_lcore_mask = 0;
 167         int i;
 168
 169         for (;;) {
 170                 c = getopt_long(argc, argv, "r:t:e:c:w:n:f:s:m:paoPqDW:",
 171                                 long_options, &option_index);
 172                 if (c == -1)
 173                         break;
 174
 175                 int popcnt = 0;
 176                 switch (c) {
 177                 case 'n':
 178                         cdata.num_packets = (int64_t)atol(optarg);
 179                         if (cdata.num_packets == 0)
 180                                 cdata.num_packets = INT64_MAX;
 181                         break;
 182                 case 'f':
 183                         cdata.num_fids = (unsigned int)atoi(optarg);
 184                         break;
 185                 case 's':
 186                         cdata.num_stages = (unsigned int)atoi(optarg);
 187                         break;
 188                 case 'c':
 189                         cdata.worker_cq_depth = (unsigned int)atoi(optarg);
 190                         break;
 191                 case 'W':
 192                         cdata.worker_cycles = (unsigned int)atoi(optarg);
 193                         break;
 194                 case 'P':
 195                         cdata.enable_queue_priorities = 1;
 196                         break;
 197                 case 'o':
 198                         cdata.queue_type = RTE_SCHED_TYPE_ORDERED;
 199                         break;
 200                 case 'p':
 201                         cdata.queue_type = RTE_SCHED_TYPE_PARALLEL;
 202                         break;
 203                 case 'a':
 204                         cdata.all_type_queues = 1;
 205                         break;
 206                 case 'q':
 207                         cdata.quiet = 1;
 208                         break;
 209                 case 'D':
 210                         cdata.dump_dev = 1;
 211                         break;
 212                 case 'w':
 213                         worker_lcore_mask = parse_coremask(optarg);
 214                         break;
 215                 case 'r':
 216                         rx_lcore_mask = parse_coremask(optarg);
 217                         popcnt = __builtin_popcountll(rx_lcore_mask);
 218                         fdata->rx_single = (popcnt == 1);
 219                         break;
 220                 case 't':
 221                         tx_lcore_mask = parse_coremask(optarg);
 222                         popcnt = __builtin_popcountll(tx_lcore_mask);
 223                         fdata->tx_single = (popcnt == 1);
 224                         break;
 225                 case 'e':
 226                         sched_lcore_mask = parse_coremask(optarg);
 227                         popcnt = __builtin_popcountll(sched_lcore_mask);
 228                         fdata->sched_single = (popcnt == 1);
 229                         break;
 230                 case 'm':
 231                         cdata.num_mbuf = (uint64_t)atol(optarg);
 232                         break;
 233                 default:
 234                         usage();
 235                 }
 236         }
 237
 238         cdata.worker_lcore_mask = worker_lcore_mask;
 239         cdata.sched_lcore_mask = sched_lcore_mask;
 240         cdata.rx_lcore_mask = rx_lcore_mask;
 241         cdata.tx_lcore_mask = tx_lcore_mask;
 242
 243         if (cdata.num_stages == 0 || cdata.num_stages > MAX_NUM_STAGES)
 244                 usage();
 245
 246         for (i = 0; i < MAX_NUM_CORE; i++) {
 247                 fdata->rx_core[i] = !!(rx_lcore_mask & (1UL << i));
 248                 fdata->tx_core[i] = !!(tx_lcore_mask & (1UL << i));
 249                 fdata->sched_core[i] = !!(sched_lcore_mask & (1UL << i));
 250                 fdata->worker_core[i] = !!(worker_lcore_mask & (1UL << i));
 251
 252                 if (fdata->worker_core[i])
 253                         cdata.num_workers++;
 254                 if (core_in_use(i))
 255                         cdata.active_cores++;
 256         }
 257 }
 258
 259 /*
 260  * Initializes a given port using global settings and with the RX buffers
 261  * coming from the mbuf_pool passed as a parameter.
 262  */
 263 static inline int
 264 port_init(uint8_t port, struct rte_mempool *mbuf_pool)
 265 {
 266         static const struct rte_eth_conf port_conf_default = {
 267                 .rxmode = {
 268                         .mq_mode = ETH_MQ_RX_RSS,
 269                         .max_rx_pkt_len = ETHER_MAX_LEN,
 270                 },
 271                 .rx_adv_conf = {
 272                         .rss_conf = {
 273                                 .rss_hf = ETH_RSS_IP |
 274                                           ETH_RSS_TCP |
 275                                           ETH_RSS_UDP,
 276                         }
 277                 }
 278         };
 279         const uint16_t rx_rings = 1, tx_rings = 1;
 280         const uint16_t rx_ring_size = 512, tx_ring_size = 512;
 281         struct rte_eth_conf port_conf = port_conf_default;
 282         int retval;
 283         uint16_t q;
 284         struct rte_eth_dev_info dev_info;
 285         struct rte_eth_txconf txconf;
 286
 287         if (!rte_eth_dev_is_valid_port(port))
 288                 return -1;
 289
 290         rte_eth_dev_info_get(port, &dev_info);
 291         if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
 292                 port_conf.txmode.offloads |=
 293                         DEV_TX_OFFLOAD_MBUF_FAST_FREE;
 294
 295         /* Configure the Ethernet device. */
 296         retval = rte_eth_dev_configure(port, rx_rings, tx_rings, &port_conf);
 297         if (retval != 0)
 298                 return retval;
 299
 300         /* Allocate and set up 1 RX queue per Ethernet port. */
 301         for (q = 0; q < rx_rings; q++) {
 302                 retval = rte_eth_rx_queue_setup(port, q, rx_ring_size,
 303                                 rte_eth_dev_socket_id(port), NULL, mbuf_pool);
 304                 if (retval < 0)
 305                         return retval;
 306         }
 307
 308         txconf = dev_info.default_txconf;
 309         txconf.offloads = port_conf_default.txmode.offloads;
 310         /* Allocate and set up 1 TX queue per Ethernet port. */
 311         for (q = 0; q < tx_rings; q++) {
 312                 retval = rte_eth_tx_queue_setup(port, q, tx_ring_size,
 313                                 rte_eth_dev_socket_id(port), &txconf);
 314                 if (retval < 0)
 315                         return retval;
 316         }
 317
 318         /* Start the Ethernet port. */
 319         retval = rte_eth_dev_start(port);
 320         if (retval < 0)
 321                 return retval;
 322
 323         /* Display the port MAC address. */
 324         struct ether_addr addr;
 325         rte_eth_macaddr_get(port, &addr);
 326         printf("Port %u MAC: %02" PRIx8 " %02" PRIx8 " %02" PRIx8
 327                            " %02" PRIx8 " %02" PRIx8 " %02" PRIx8 "\n",
 328                         (unsigned int)port,
 329                         addr.addr_bytes[0], addr.addr_bytes[1],
 330                         addr.addr_bytes[2], addr.addr_bytes[3],
 331                         addr.addr_bytes[4], addr.addr_bytes[5]);
 332
 333         /* Enable RX in promiscuous mode for the Ethernet device. */
 334         rte_eth_promiscuous_enable(port);
 335
 336         return 0;
 337 }
 338
 339 static int
 340 init_ports(uint16_t num_ports)
 341 {
 342         uint16_t portid, i;
 343
 344         if (!cdata.num_mbuf)
 345                 cdata.num_mbuf = 16384 * num_ports;
 346
 347         struct rte_mempool *mp = rte_pktmbuf_pool_create("packet_pool",
 348                         /* mbufs */ cdata.num_mbuf,
 349                         /* cache_size */ 512,
 350                         /* priv_size*/ 0,
 351                         /* data_room_size */ RTE_MBUF_DEFAULT_BUF_SIZE,
 352                         rte_socket_id());
 353
 354         RTE_ETH_FOREACH_DEV(portid)
 355                 if (port_init(portid, mp) != 0)
 356                         rte_exit(EXIT_FAILURE, "Cannot init port %"PRIu16 "\n",
 357                                         portid);
 358
 359         RTE_ETH_FOREACH_DEV(i) {
 360                 void *userdata = (void *)(uintptr_t) i;
 361                 fdata->tx_buf[i] =
 362                         rte_malloc(NULL, RTE_ETH_TX_BUFFER_SIZE(32), 0);
 363                 if (fdata->tx_buf[i] == NULL)
 364                         rte_panic("Out of memory\n");
 365                 rte_eth_tx_buffer_init(fdata->tx_buf[i], 32);
 366                 rte_eth_tx_buffer_set_err_callback(fdata->tx_buf[i],
 367                                                    eth_tx_buffer_retry,
 368                                                    userdata);
 369         }
 370
 371         return 0;
 372 }
 373
 374 static void
 375 do_capability_setup(uint8_t eventdev_id)
 376 {
 377         uint16_t i;
 378         uint8_t mt_unsafe = 0;
 379         uint8_t burst = 0;
 380
 381         RTE_ETH_FOREACH_DEV(i) {
 382                 struct rte_eth_dev_info dev_info;
 383                 memset(&dev_info, 0, sizeof(struct rte_eth_dev_info));
 384
 385                 rte_eth_dev_info_get(i, &dev_info);
 386                 /* Check if it is safe ask worker to tx. */
 387                 mt_unsafe |= !(dev_info.tx_offload_capa &
 388                                 DEV_TX_OFFLOAD_MT_LOCKFREE);
 389         }
 390
 391         struct rte_event_dev_info eventdev_info;
 392         memset(&eventdev_info, 0, sizeof(struct rte_event_dev_info));
 393
 394         rte_event_dev_info_get(eventdev_id, &eventdev_info);
 395         burst = eventdev_info.event_dev_cap & RTE_EVENT_DEV_CAP_BURST_MODE ? 1 :
 396                 0;
 397
 398         if (mt_unsafe)
 399                 set_worker_generic_setup_data(&fdata->cap, burst);
 400         else
 401                 set_worker_tx_setup_data(&fdata->cap, burst);
 402 }
 403
 404 static void
 405 signal_handler(int signum)
 406 {
 407         if (fdata->done)
 408                 rte_exit(1, "Exiting on signal %d\n", signum);
 409         if (signum == SIGINT || signum == SIGTERM) {
 410                 printf("\n\nSignal %d received, preparing to exit...\n",
 411                                 signum);
 412                 fdata->done = 1;
 413         }
 414         if (signum == SIGTSTP)
 415                 rte_event_dev_dump(0, stdout);
 416 }
 417
 418 static inline uint64_t
 419 port_stat(int dev_id, int32_t p)
 420 {
 421         char statname[64];
 422         snprintf(statname, sizeof(statname), "port_%u_rx", p);
 423         return rte_event_dev_xstats_by_name_get(dev_id, statname, NULL);
 424 }
 425
 426 int
 427 main(int argc, char **argv)
 428 {
 429         struct worker_data *worker_data;
 430         uint16_t num_ports;
 431         int lcore_id;
 432         int err;
 433
 434         signal(SIGINT, signal_handler);
 435         signal(SIGTERM, signal_handler);
 436         signal(SIGTSTP, signal_handler);
 437
 438         err = rte_eal_init(argc, argv);
 439         if (err < 0)
 440                 rte_panic("Invalid EAL arguments\n");
 441
 442         argc -= err;
 443         argv += err;
 444
 445         fdata = rte_malloc(NULL, sizeof(struct fastpath_data), 0);
 446         if (fdata == NULL)
 447                 rte_panic("Out of memory\n");
 448
 449         /* Parse cli options*/
 450         parse_app_args(argc, argv);
 451
 452         num_ports = rte_eth_dev_count_avail();
 453         if (num_ports == 0)
 454                 rte_panic("No ethernet ports found\n");
 455
 456         const unsigned int cores_needed = cdata.active_cores;
 457
 458         if (!cdata.quiet) {
 459                 printf("  Config:\n");
 460                 printf("\tports: %u\n", num_ports);
 461                 printf("\tworkers: %u\n", cdata.num_workers);
 462                 printf("\tpackets: %"PRIi64"\n", cdata.num_packets);
 463                 printf("\tQueue-prio: %u\n", cdata.enable_queue_priorities);
 464                 if (cdata.queue_type == RTE_SCHED_TYPE_ORDERED)
 465                         printf("\tqid0 type: ordered\n");
 466                 if (cdata.queue_type == RTE_SCHED_TYPE_ATOMIC)
 467                         printf("\tqid0 type: atomic\n");
 468                 printf("\tCores available: %u\n", rte_lcore_count());
 469                 printf("\tCores used: %u\n", cores_needed);
 470         }
 471
 472         if (rte_lcore_count() < cores_needed)
 473                 rte_panic("Too few cores (%d < %d)\n", rte_lcore_count(),
 474                                 cores_needed);
 475
 476         const unsigned int ndevs = rte_event_dev_count();
 477         if (ndevs == 0)
 478                 rte_panic("No dev_id devs found. Pasl in a --vdev eventdev.\n");
 479         if (ndevs > 1)
 480                 fprintf(stderr, "Warning: More than one eventdev, using idx 0");
 481
 482
 483         do_capability_setup(0);
 484         fdata->cap.check_opt();
 485
 486         worker_data = rte_calloc(0, cdata.num_workers,
 487                         sizeof(worker_data[0]), 0);
 488         if (worker_data == NULL)
 489                 rte_panic("rte_calloc failed\n");
 490
 491         int dev_id = fdata->cap.evdev_setup(&cons_data, worker_data);
 492         if (dev_id < 0)
 493                 rte_exit(EXIT_FAILURE, "Error setting up eventdev\n");
 494
 495         init_ports(num_ports);
 496         fdata->cap.adptr_setup(num_ports);
 497
 498         int worker_idx = 0;
 499         RTE_LCORE_FOREACH_SLAVE(lcore_id) {
 500                 if (lcore_id >= MAX_NUM_CORE)
 501                         break;
 502
 503                 if (!fdata->rx_core[lcore_id] &&
 504                         !fdata->worker_core[lcore_id] &&
 505                         !fdata->tx_core[lcore_id] &&
 506                         !fdata->sched_core[lcore_id])
 507                         continue;
 508
 509                 if (fdata->rx_core[lcore_id])
 510                         printf(
 511                                 "[%s()] lcore %d executing NIC Rx\n",
 512                                 __func__, lcore_id);
 513
 514                 if (fdata->tx_core[lcore_id])
 515                         printf(
 516                                 "[%s()] lcore %d executing NIC Tx, and using eventdev port %u\n",
 517                                 __func__, lcore_id, cons_data.port_id);
 518
 519                 if (fdata->sched_core[lcore_id])
 520                         printf("[%s()] lcore %d executing scheduler\n",
 521                                         __func__, lcore_id);
 522
 523                 if (fdata->worker_core[lcore_id])
 524                         printf(
 525                                 "[%s()] lcore %d executing worker, using eventdev port %u\n",
 526                                 __func__, lcore_id,
 527                                 worker_data[worker_idx].port_id);
 528
 529                 err = rte_eal_remote_launch(fdata->cap.worker,
 530                                 &worker_data[worker_idx], lcore_id);
 531                 if (err) {
 532                         rte_panic("Failed to launch worker on core %d\n",
 533                                         lcore_id);
 534                         continue;
 535                 }
 536                 if (fdata->worker_core[lcore_id])
 537                         worker_idx++;
 538         }
 539
 540         lcore_id = rte_lcore_id();
 541
 542         if (core_in_use(lcore_id))
 543                 fdata->cap.worker(&worker_data[worker_idx++]);
 544
 545         rte_eal_mp_wait_lcore();
 546
 547         if (cdata.dump_dev)
 548                 rte_event_dev_dump(dev_id, stdout);
 549
 550         if (!cdata.quiet && (port_stat(dev_id, worker_data[0].port_id) !=
 551                         (uint64_t)-ENOTSUP)) {
 552                 printf("\nPort Workload distribution:\n");
 553                 uint32_t i;
 554                 uint64_t tot_pkts = 0;
 555                 uint64_t pkts_per_wkr[RTE_MAX_LCORE] = {0};
 556                 for (i = 0; i < cdata.num_workers; i++) {
 557                         pkts_per_wkr[i] =
 558                                 port_stat(dev_id, worker_data[i].port_id);
 559                         tot_pkts += pkts_per_wkr[i];
 560                 }
 561                 for (i = 0; i < cdata.num_workers; i++) {
 562                         float pc = pkts_per_wkr[i]  * 100 /
 563                                 ((float)tot_pkts);
 564                         printf("worker %i :\t%.1f %% (%"PRIu64" pkts)\n",
 565                                         i, pc, pkts_per_wkr[i]);
 566                 }
 567
 568         }
 569
 570         return 0;
 571 }