examples/load_balancer/init.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
   5  *   All rights reserved.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of Intel Corporation nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <stdio.h>
  35 #include <stdlib.h>
  36 #include <stdint.h>
  37 #include <inttypes.h>
  38 #include <sys/types.h>
  39 #include <string.h>
  40 #include <sys/queue.h>
  41 #include <stdarg.h>
  42 #include <errno.h>
  43 #include <getopt.h>
  44
  45 #include <rte_common.h>
  46 #include <rte_byteorder.h>
  47 #include <rte_log.h>
  48 #include <rte_memory.h>
  49 #include <rte_memcpy.h>
  50 #include <rte_memzone.h>
  51 #include <rte_tailq.h>
  52 #include <rte_eal.h>
  53 #include <rte_per_lcore.h>
  54 #include <rte_launch.h>
  55 #include <rte_atomic.h>
  56 #include <rte_cycles.h>
  57 #include <rte_prefetch.h>
  58 #include <rte_lcore.h>
  59 #include <rte_per_lcore.h>
  60 #include <rte_branch_prediction.h>
  61 #include <rte_interrupts.h>
  62 #include <rte_pci.h>
  63 #include <rte_random.h>
  64 #include <rte_debug.h>
  65 #include <rte_ether.h>
  66 #include <rte_ethdev.h>
  67 #include <rte_ring.h>
  68 #include <rte_mempool.h>
  69 #include <rte_mbuf.h>
  70 #include <rte_string_fns.h>
  71 #include <rte_ip.h>
  72 #include <rte_tcp.h>
  73 #include <rte_lpm.h>
  74
  75 #include "main.h"
  76
  77 static struct rte_eth_conf port_conf = {
  78         .rxmode = {
  79                 .mq_mode        = ETH_MQ_RX_RSS,
  80                 .split_hdr_size = 0,
  81                 .header_split   = 0, /**< Header Split disabled */
  82                 .hw_ip_checksum = 1, /**< IP checksum offload enabled */
  83                 .hw_vlan_filter = 0, /**< VLAN filtering disabled */
  84                 .jumbo_frame    = 0, /**< Jumbo Frame Support disabled */
  85                 .hw_strip_crc   = 0, /**< CRC stripped by hardware */
  86         },
  87         .rx_adv_conf = {
  88                 .rss_conf = {
  89                         .rss_key = NULL,
  90                         .rss_hf = ETH_RSS_IPV4 | ETH_RSS_IPV6,
  91                 },
  92         },
  93         .txmode = {
  94                 .mq_mode = ETH_MQ_TX_NONE,
  95         },
  96 };
  97
  98 static struct rte_eth_rxconf rx_conf = {
  99         .rx_thresh = {
 100                 .pthresh = APP_DEFAULT_NIC_RX_PTHRESH,
 101                 .hthresh = APP_DEFAULT_NIC_RX_HTHRESH,
 102                 .wthresh = APP_DEFAULT_NIC_RX_WTHRESH,
 103         },
 104         .rx_free_thresh = APP_DEFAULT_NIC_RX_FREE_THRESH,
 105         .rx_drop_en = APP_DEFAULT_NIC_RX_DROP_EN,
 106 };
 107
 108 static struct rte_eth_txconf tx_conf = {
 109         .tx_thresh = {
 110                 .pthresh = APP_DEFAULT_NIC_TX_PTHRESH,
 111                 .hthresh = APP_DEFAULT_NIC_TX_HTHRESH,
 112                 .wthresh = APP_DEFAULT_NIC_TX_WTHRESH,
 113         },
 114         .tx_free_thresh = APP_DEFAULT_NIC_TX_FREE_THRESH,
 115         .tx_rs_thresh = APP_DEFAULT_NIC_TX_RS_THRESH,
 116 };
 117
 118 static void
 119 app_assign_worker_ids(void)
 120 {
 121         uint32_t lcore, worker_id;
 122
 123         /* Assign ID for each worker */
 124         worker_id = 0;
 125         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 126                 struct app_lcore_params_worker *lp_worker = &app.lcore_params[lcore].worker;
 127
 128                 if (app.lcore_params[lcore].type != e_APP_LCORE_WORKER) {
 129                         continue;
 130                 }
 131
 132                 lp_worker->worker_id = worker_id;
 133                 worker_id ++;
 134         }
 135 }
 136
 137 static void
 138 app_init_mbuf_pools(void)
 139 {
 140         unsigned socket, lcore;
 141
 142         /* Init the buffer pools */
 143         for (socket = 0; socket < APP_MAX_SOCKETS; socket ++) {
 144                 char name[32];
 145                 if (app_is_socket_used(socket) == 0) {
 146                         continue;
 147                 }
 148
 149                 rte_snprintf(name, sizeof(name), "mbuf_pool_%u", socket);
 150                 printf("Creating the mbuf pool for socket %u ...\n", socket);
 151                 app.pools[socket] = rte_mempool_create(
 152                         name,
 153                         APP_DEFAULT_MEMPOOL_BUFFERS,
 154                         APP_DEFAULT_MBUF_SIZE,
 155                         APP_DEFAULT_MEMPOOL_CACHE_SIZE,
 156                         sizeof(struct rte_pktmbuf_pool_private),
 157                         rte_pktmbuf_pool_init, NULL,
 158                         rte_pktmbuf_init, NULL,
 159                         socket,
 160                         0);
 161                 if (app.pools[socket] == NULL) {
 162                         rte_panic("Cannot create mbuf pool on socket %u\n", socket);
 163                 }
 164         }
 165
 166         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 167                 if (app.lcore_params[lcore].type == e_APP_LCORE_DISABLED) {
 168                         continue;
 169                 }
 170
 171                 socket = rte_lcore_to_socket_id(lcore);
 172                 app.lcore_params[lcore].pool = app.pools[socket];
 173         }
 174 }
 175
 176 static void
 177 app_init_lpm_tables(void)
 178 {
 179         unsigned socket, lcore;
 180
 181         /* Init the LPM tables */
 182         for (socket = 0; socket < APP_MAX_SOCKETS; socket ++) {
 183                 char name[32];
 184                 uint32_t rule;
 185
 186                 if (app_is_socket_used(socket) == 0) {
 187                         continue;
 188                 }
 189
 190                 rte_snprintf(name, sizeof(name), "lpm_table_%u", socket);
 191                 printf("Creating the LPM table for socket %u ...\n", socket);
 192                 app.lpm_tables[socket] = rte_lpm_create(
 193                         name,
 194                         socket,
 195                         APP_MAX_LPM_RULES,
 196                         0);
 197                 if (app.lpm_tables[socket] == NULL) {
 198                         rte_panic("Unable to create LPM table on socket %u\n", socket);
 199                 }
 200
 201                 for (rule = 0; rule < app.n_lpm_rules; rule ++) {
 202                         int ret;
 203
 204                         ret = rte_lpm_add(app.lpm_tables[socket],
 205                                 app.lpm_rules[rule].ip,
 206                                 app.lpm_rules[rule].depth,
 207                                 app.lpm_rules[rule].if_out);
 208
 209                         if (ret < 0) {
 210                                 rte_panic("Unable to add entry %u (%x/%u => %u) to the LPM table on socket %u (%d)\n",
 211                                         (unsigned) rule,
 212                                         (unsigned) app.lpm_rules[rule].ip,
 213                                         (unsigned) app.lpm_rules[rule].depth,
 214                                         (unsigned) app.lpm_rules[rule].if_out,
 215                                         socket,
 216                                         ret);
 217                         }
 218                 }
 219
 220         }
 221
 222         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 223                 if (app.lcore_params[lcore].type != e_APP_LCORE_WORKER) {
 224                         continue;
 225                 }
 226
 227                 socket = rte_lcore_to_socket_id(lcore);
 228                 app.lcore_params[lcore].worker.lpm_table = app.lpm_tables[socket];
 229         }
 230 }
 231
 232 static void
 233 app_init_rings_rx(void)
 234 {
 235         unsigned lcore;
 236
 237         /* Initialize the rings for the RX side */
 238         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 239                 struct app_lcore_params_io *lp_io = &app.lcore_params[lcore].io;
 240                 unsigned socket_io, lcore_worker;
 241
 242                 if ((app.lcore_params[lcore].type != e_APP_LCORE_IO) ||
 243                     (lp_io->rx.n_nic_queues == 0)) {
 244                         continue;
 245                 }
 246
 247                 socket_io = rte_lcore_to_socket_id(lcore);
 248
 249                 for (lcore_worker = 0; lcore_worker < APP_MAX_LCORES; lcore_worker ++) {
 250                         char name[32];
 251                         struct app_lcore_params_worker *lp_worker = &app.lcore_params[lcore_worker].worker;
 252                         struct rte_ring *ring = NULL;
 253
 254                         if (app.lcore_params[lcore_worker].type != e_APP_LCORE_WORKER) {
 255                                 continue;
 256                         }
 257
 258                         printf("Creating ring to connect I/O lcore %u (socket %u) with worker lcore %u ...\n",
 259                                 lcore,
 260                                 socket_io,
 261                                 lcore_worker);
 262                         rte_snprintf(name, sizeof(name), "app_ring_rx_s%u_io%u_w%u",
 263                                 socket_io,
 264                                 lcore,
 265                                 lcore_worker);
 266                         ring = rte_ring_create(
 267                                 name,
 268                                 app.ring_rx_size,
 269                                 socket_io,
 270                                 RING_F_SP_ENQ | RING_F_SC_DEQ);
 271                         if (ring == NULL) {
 272                                 rte_panic("Cannot create ring to connect I/O core %u with worker core %u\n",
 273                                         lcore,
 274                                         lcore_worker);
 275                         }
 276
 277                         lp_io->rx.rings[lp_io->rx.n_rings] = ring;
 278                         lp_io->rx.n_rings ++;
 279
 280                         lp_worker->rings_in[lp_worker->n_rings_in] = ring;
 281                         lp_worker->n_rings_in ++;
 282                 }
 283         }
 284
 285         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 286                 struct app_lcore_params_io *lp_io = &app.lcore_params[lcore].io;
 287
 288                 if ((app.lcore_params[lcore].type != e_APP_LCORE_IO) ||
 289                     (lp_io->rx.n_nic_queues == 0)) {
 290                         continue;
 291                 }
 292
 293                 if (lp_io->rx.n_rings != app_get_lcores_worker()) {
 294                         rte_panic("Algorithmic error (I/O RX rings)\n");
 295                 }
 296         }
 297
 298         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 299                 struct app_lcore_params_worker *lp_worker = &app.lcore_params[lcore].worker;
 300
 301                 if (app.lcore_params[lcore].type != e_APP_LCORE_WORKER) {
 302                         continue;
 303                 }
 304
 305                 if (lp_worker->n_rings_in != app_get_lcores_io_rx()) {
 306                         rte_panic("Algorithmic error (worker input rings)\n");
 307                 }
 308         }
 309 }
 310
 311 static void
 312 app_init_rings_tx(void)
 313 {
 314         unsigned lcore;
 315
 316         /* Initialize the rings for the TX side */
 317         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 318                 struct app_lcore_params_worker *lp_worker = &app.lcore_params[lcore].worker;
 319                 unsigned port;
 320
 321                 if (app.lcore_params[lcore].type != e_APP_LCORE_WORKER) {
 322                         continue;
 323                 }
 324
 325                 for (port = 0; port < APP_MAX_NIC_PORTS; port ++) {
 326                         char name[32];
 327                         struct app_lcore_params_io *lp_io = NULL;
 328                         struct rte_ring *ring;
 329                         uint32_t socket_io, lcore_io;
 330
 331                         if (app.nic_tx_port_mask[port] == 0) {
 332                                 continue;
 333                         }
 334
 335                         if (app_get_lcore_for_nic_tx((uint8_t) port, &lcore_io) < 0) {
 336                                 rte_panic("Algorithmic error (no I/O core to handle TX of port %u)\n",
 337                                         port);
 338                         }
 339
 340                         lp_io = &app.lcore_params[lcore_io].io;
 341                         socket_io = rte_lcore_to_socket_id(lcore_io);
 342
 343                         printf("Creating ring to connect worker lcore %u with TX port %u (through I/O lcore %u) (socket %u) ...\n",
 344                                 lcore, port, (unsigned)lcore_io, (unsigned)socket_io);
 345                         rte_snprintf(name, sizeof(name), "app_ring_tx_s%u_w%u_p%u", socket_io, lcore, port);
 346                         ring = rte_ring_create(
 347                                 name,
 348                                 app.ring_tx_size,
 349                                 socket_io,
 350                                 RING_F_SP_ENQ | RING_F_SC_DEQ);
 351                         if (ring == NULL) {
 352                                 rte_panic("Cannot create ring to connect worker core %u with TX port %u\n",
 353                                         lcore,
 354                                         port);
 355                         }
 356
 357                         lp_worker->rings_out[port] = ring;
 358                         lp_io->tx.rings[port][lp_worker->worker_id] = ring;
 359                 }
 360         }
 361
 362         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 363                 struct app_lcore_params_io *lp_io = &app.lcore_params[lcore].io;
 364                 unsigned i;
 365
 366                 if ((app.lcore_params[lcore].type != e_APP_LCORE_IO) ||
 367                     (lp_io->tx.n_nic_ports == 0)) {
 368                         continue;
 369                 }
 370
 371                 for (i = 0; i < lp_io->tx.n_nic_ports; i ++){
 372                         unsigned port, j;
 373
 374                         port = lp_io->tx.nic_ports[i];
 375                         for (j = 0; j < app_get_lcores_worker(); j ++) {
 376                                 if (lp_io->tx.rings[port][j] == NULL) {
 377                                         rte_panic("Algorithmic error (I/O TX rings)\n");
 378                                 }
 379                         }
 380                 }
 381         }
 382 }
 383
 384 /* Check the link status of all ports in up to 9s, and print them finally */
 385 static void
 386 check_all_ports_link_status(uint8_t port_num, uint32_t port_mask)
 387 {
 388 #define CHECK_INTERVAL 100 /* 100ms */
 389 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
 390         uint8_t portid, count, all_ports_up, print_flag = 0;
 391         struct rte_eth_link link;
 392         uint32_t n_rx_queues, n_tx_queues;
 393
 394         printf("\nChecking link status");
 395         fflush(stdout);
 396         for (count = 0; count <= MAX_CHECK_TIME; count++) {
 397                 all_ports_up = 1;
 398                 for (portid = 0; portid < port_num; portid++) {
 399                         if ((port_mask & (1 << portid)) == 0)
 400                                 continue;
 401                         n_rx_queues = app_get_nic_rx_queues_per_port(portid);
 402                         n_tx_queues = app.nic_tx_port_mask[portid];
 403                         if ((n_rx_queues == 0) && (n_tx_queues == 0))
 404                                 continue;
 405                         memset(&link, 0, sizeof(link));
 406                         rte_eth_link_get_nowait(portid, &link);
 407                         /* print link status if flag set */
 408                         if (print_flag == 1) {
 409                                 if (link.link_status)
 410                                         printf("Port %d Link Up - speed %u "
 411                                                 "Mbps - %s\n", (uint8_t)portid,
 412                                                 (unsigned)link.link_speed,
 413                                 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
 414                                         ("full-duplex") : ("half-duplex\n"));
 415                                 else
 416                                         printf("Port %d Link Down\n",
 417                                                         (uint8_t)portid);
 418                                 continue;
 419                         }
 420                         /* clear all_ports_up flag if any link down */
 421                         if (link.link_status == 0) {
 422                                 all_ports_up = 0;
 423                                 break;
 424                         }
 425                 }
 426                 /* after finally printing all link status, get out */
 427                 if (print_flag == 1)
 428                         break;
 429
 430                 if (all_ports_up == 0) {
 431                         printf(".");
 432                         fflush(stdout);
 433                         rte_delay_ms(CHECK_INTERVAL);
 434                 }
 435
 436                 /* set the print_flag if all ports up or timeout */
 437                 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
 438                         print_flag = 1;
 439                         printf("done\n");
 440                 }
 441         }
 442 }
 443
 444 static void
 445 app_init_nics(void)
 446 {
 447         unsigned socket;
 448         uint32_t lcore;
 449         uint8_t port, queue;
 450         int ret;
 451         uint32_t n_rx_queues, n_tx_queues;
 452
 453         if (rte_eal_pci_probe() < 0) {
 454                 rte_panic("Cannot probe PCI\n");
 455         }
 456
 457         /* Init NIC ports and queues, then start the ports */
 458         for (port = 0; port < APP_MAX_NIC_PORTS; port ++) {
 459                 struct rte_mempool *pool;
 460
 461                 n_rx_queues = app_get_nic_rx_queues_per_port(port);
 462                 n_tx_queues = app.nic_tx_port_mask[port];
 463
 464                 if ((n_rx_queues == 0) && (n_tx_queues == 0)) {
 465                         continue;
 466                 }
 467
 468                 /* Init port */
 469                 printf("Initializing NIC port %u ...\n", (unsigned) port);
 470                 ret = rte_eth_dev_configure(
 471                         port,
 472                         (uint8_t) n_rx_queues,
 473                         (uint8_t) n_tx_queues,
 474                         &port_conf);
 475                 if (ret < 0) {
 476                         rte_panic("Cannot init NIC port %u (%d)\n", (unsigned) port, ret);
 477                 }
 478                 rte_eth_promiscuous_enable(port);
 479
 480                 /* Init RX queues */
 481                 for (queue = 0; queue < APP_MAX_RX_QUEUES_PER_NIC_PORT; queue ++) {
 482                         if (app.nic_rx_queue_mask[port][queue] == 0) {
 483                                 continue;
 484                         }
 485
 486                         app_get_lcore_for_nic_rx(port, queue, &lcore);
 487                         socket = rte_lcore_to_socket_id(lcore);
 488                         pool = app.lcore_params[lcore].pool;
 489
 490                         printf("Initializing NIC port %u RX queue %u ...\n",
 491                                 (unsigned) port,
 492                                 (unsigned) queue);
 493                         ret = rte_eth_rx_queue_setup(
 494                                 port,
 495                                 queue,
 496                                 (uint16_t) app.nic_rx_ring_size,
 497                                 socket,
 498                                 &rx_conf,
 499                                 pool);
 500                         if (ret < 0) {
 501                                 rte_panic("Cannot init RX queue %u for port %u (%d)\n",
 502                                         (unsigned) queue,
 503                                         (unsigned) port,
 504                                         ret);
 505                         }
 506                 }
 507
 508                 /* Init TX queues */
 509                 if (app.nic_tx_port_mask[port] == 1) {
 510                         app_get_lcore_for_nic_tx(port, &lcore);
 511                         socket = rte_lcore_to_socket_id(lcore);
 512                         printf("Initializing NIC port %u TX queue 0 ...\n",
 513                                 (unsigned) port);
 514                         ret = rte_eth_tx_queue_setup(
 515                                 port,
 516                                 0,
 517                                 (uint16_t) app.nic_tx_ring_size,
 518                                 socket,
 519                                 &tx_conf);
 520                         if (ret < 0) {
 521                                 rte_panic("Cannot init TX queue 0 for port %d (%d)\n",
 522                                         port,
 523                                         ret);
 524                         }
 525                 }
 526
 527                 /* Start port */
 528                 ret = rte_eth_dev_start(port);
 529                 if (ret < 0) {
 530                         rte_panic("Cannot start port %d (%d)\n", port, ret);
 531                 }
 532         }
 533
 534         check_all_ports_link_status(APP_MAX_NIC_PORTS, (~0x0));
 535 }
 536
 537 void
 538 app_init(void)
 539 {
 540         app_assign_worker_ids();
 541         app_init_mbuf_pools();
 542         app_init_lpm_tables();
 543         app_init_rings_rx();
 544         app_init_rings_tx();
 545         app_init_nics();
 546
 547         printf("Initialization completed.\n");
 548 }