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_eal.h>
  52 #include <rte_per_lcore.h>
  53 #include <rte_launch.h>
  54 #include <rte_atomic.h>
  55 #include <rte_cycles.h>
  56 #include <rte_prefetch.h>
  57 #include <rte_lcore.h>
  58 #include <rte_per_lcore.h>
  59 #include <rte_branch_prediction.h>
  60 #include <rte_interrupts.h>
  61 #include <rte_pci.h>
  62 #include <rte_random.h>
  63 #include <rte_debug.h>
  64 #include <rte_ether.h>
  65 #include <rte_ethdev.h>
  66 #include <rte_ring.h>
  67 #include <rte_mempool.h>
  68 #include <rte_mbuf.h>
  69 #include <rte_string_fns.h>
  70 #include <rte_ip.h>
  71 #include <rte_tcp.h>
  72 #include <rte_lpm.h>
  73
  74 #include "main.h"
  75
  76 static struct rte_eth_conf port_conf = {
  77         .rxmode = {
  78                 .mq_mode        = ETH_MQ_RX_RSS,
  79                 .split_hdr_size = 0,
  80                 .header_split   = 0, /**< Header Split disabled */
  81                 .hw_ip_checksum = 1, /**< IP checksum offload enabled */
  82                 .hw_vlan_filter = 0, /**< VLAN filtering disabled */
  83                 .jumbo_frame    = 0, /**< Jumbo Frame Support disabled */
  84                 .hw_strip_crc   = 0, /**< CRC stripped by hardware */
  85         },
  86         .rx_adv_conf = {
  87                 .rss_conf = {
  88                         .rss_key = NULL,
  89                         .rss_hf = ETH_RSS_IP,
  90                 },
  91         },
  92         .txmode = {
  93                 .mq_mode = ETH_MQ_TX_NONE,
  94         },
  95 };
  96
  97 static void
  98 app_assign_worker_ids(void)
  99 {
 100         uint32_t lcore, worker_id;
 101
 102         /* Assign ID for each worker */
 103         worker_id = 0;
 104         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 105                 struct app_lcore_params_worker *lp_worker = &app.lcore_params[lcore].worker;
 106
 107                 if (app.lcore_params[lcore].type != e_APP_LCORE_WORKER) {
 108                         continue;
 109                 }
 110
 111                 lp_worker->worker_id = worker_id;
 112                 worker_id ++;
 113         }
 114 }
 115
 116 static void
 117 app_init_mbuf_pools(void)
 118 {
 119         unsigned socket, lcore;
 120
 121         /* Init the buffer pools */
 122         for (socket = 0; socket < APP_MAX_SOCKETS; socket ++) {
 123                 char name[32];
 124                 if (app_is_socket_used(socket) == 0) {
 125                         continue;
 126                 }
 127
 128                 snprintf(name, sizeof(name), "mbuf_pool_%u", socket);
 129                 printf("Creating the mbuf pool for socket %u ...\n", socket);
 130                 app.pools[socket] = rte_pktmbuf_pool_create(
 131                         name, APP_DEFAULT_MEMPOOL_BUFFERS,
 132                         APP_DEFAULT_MEMPOOL_CACHE_SIZE,
 133                         0, APP_DEFAULT_MBUF_DATA_SIZE, socket);
 134                 if (app.pools[socket] == NULL) {
 135                         rte_panic("Cannot create mbuf pool on socket %u\n", socket);
 136                 }
 137         }
 138
 139         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 140                 if (app.lcore_params[lcore].type == e_APP_LCORE_DISABLED) {
 141                         continue;
 142                 }
 143
 144                 socket = rte_lcore_to_socket_id(lcore);
 145                 app.lcore_params[lcore].pool = app.pools[socket];
 146         }
 147 }
 148
 149 static void
 150 app_init_lpm_tables(void)
 151 {
 152         unsigned socket, lcore;
 153
 154         /* Init the LPM tables */
 155         for (socket = 0; socket < APP_MAX_SOCKETS; socket ++) {
 156                 char name[32];
 157                 uint32_t rule;
 158
 159                 if (app_is_socket_used(socket) == 0) {
 160                         continue;
 161                 }
 162
 163                 struct rte_lpm_config lpm_config;
 164
 165                 lpm_config.max_rules = APP_MAX_LPM_RULES;
 166                 lpm_config.number_tbl8s = 256;
 167                 lpm_config.flags = 0;
 168                 snprintf(name, sizeof(name), "lpm_table_%u", socket);
 169                 printf("Creating the LPM table for socket %u ...\n", socket);
 170                 app.lpm_tables[socket] = rte_lpm_create(
 171                         name,
 172                         socket,
 173                         &lpm_config);
 174                 if (app.lpm_tables[socket] == NULL) {
 175                         rte_panic("Unable to create LPM table on socket %u\n", socket);
 176                 }
 177
 178                 for (rule = 0; rule < app.n_lpm_rules; rule ++) {
 179                         int ret;
 180
 181                         ret = rte_lpm_add(app.lpm_tables[socket],
 182                                 app.lpm_rules[rule].ip,
 183                                 app.lpm_rules[rule].depth,
 184                                 app.lpm_rules[rule].if_out);
 185
 186                         if (ret < 0) {
 187                                 rte_panic("Unable to add entry %u (%x/%u => %u) to the LPM table on socket %u (%d)\n",
 188                                         (unsigned) rule,
 189                                         (unsigned) app.lpm_rules[rule].ip,
 190                                         (unsigned) app.lpm_rules[rule].depth,
 191                                         (unsigned) app.lpm_rules[rule].if_out,
 192                                         socket,
 193                                         ret);
 194                         }
 195                 }
 196
 197         }
 198
 199         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 200                 if (app.lcore_params[lcore].type != e_APP_LCORE_WORKER) {
 201                         continue;
 202                 }
 203
 204                 socket = rte_lcore_to_socket_id(lcore);
 205                 app.lcore_params[lcore].worker.lpm_table = app.lpm_tables[socket];
 206         }
 207 }
 208
 209 static void
 210 app_init_rings_rx(void)
 211 {
 212         unsigned lcore;
 213
 214         /* Initialize the rings for the RX side */
 215         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 216                 struct app_lcore_params_io *lp_io = &app.lcore_params[lcore].io;
 217                 unsigned socket_io, lcore_worker;
 218
 219                 if ((app.lcore_params[lcore].type != e_APP_LCORE_IO) ||
 220                     (lp_io->rx.n_nic_queues == 0)) {
 221                         continue;
 222                 }
 223
 224                 socket_io = rte_lcore_to_socket_id(lcore);
 225
 226                 for (lcore_worker = 0; lcore_worker < APP_MAX_LCORES; lcore_worker ++) {
 227                         char name[32];
 228                         struct app_lcore_params_worker *lp_worker = &app.lcore_params[lcore_worker].worker;
 229                         struct rte_ring *ring = NULL;
 230
 231                         if (app.lcore_params[lcore_worker].type != e_APP_LCORE_WORKER) {
 232                                 continue;
 233                         }
 234
 235                         printf("Creating ring to connect I/O lcore %u (socket %u) with worker lcore %u ...\n",
 236                                 lcore,
 237                                 socket_io,
 238                                 lcore_worker);
 239                         snprintf(name, sizeof(name), "app_ring_rx_s%u_io%u_w%u",
 240                                 socket_io,
 241                                 lcore,
 242                                 lcore_worker);
 243                         ring = rte_ring_create(
 244                                 name,
 245                                 app.ring_rx_size,
 246                                 socket_io,
 247                                 RING_F_SP_ENQ | RING_F_SC_DEQ);
 248                         if (ring == NULL) {
 249                                 rte_panic("Cannot create ring to connect I/O core %u with worker core %u\n",
 250                                         lcore,
 251                                         lcore_worker);
 252                         }
 253
 254                         lp_io->rx.rings[lp_io->rx.n_rings] = ring;
 255                         lp_io->rx.n_rings ++;
 256
 257                         lp_worker->rings_in[lp_worker->n_rings_in] = ring;
 258                         lp_worker->n_rings_in ++;
 259                 }
 260         }
 261
 262         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 263                 struct app_lcore_params_io *lp_io = &app.lcore_params[lcore].io;
 264
 265                 if ((app.lcore_params[lcore].type != e_APP_LCORE_IO) ||
 266                     (lp_io->rx.n_nic_queues == 0)) {
 267                         continue;
 268                 }
 269
 270                 if (lp_io->rx.n_rings != app_get_lcores_worker()) {
 271                         rte_panic("Algorithmic error (I/O RX rings)\n");
 272                 }
 273         }
 274
 275         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 276                 struct app_lcore_params_worker *lp_worker = &app.lcore_params[lcore].worker;
 277
 278                 if (app.lcore_params[lcore].type != e_APP_LCORE_WORKER) {
 279                         continue;
 280                 }
 281
 282                 if (lp_worker->n_rings_in != app_get_lcores_io_rx()) {
 283                         rte_panic("Algorithmic error (worker input rings)\n");
 284                 }
 285         }
 286 }
 287
 288 static void
 289 app_init_rings_tx(void)
 290 {
 291         unsigned lcore;
 292
 293         /* Initialize the rings for the TX side */
 294         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 295                 struct app_lcore_params_worker *lp_worker = &app.lcore_params[lcore].worker;
 296                 unsigned port;
 297
 298                 if (app.lcore_params[lcore].type != e_APP_LCORE_WORKER) {
 299                         continue;
 300                 }
 301
 302                 for (port = 0; port < APP_MAX_NIC_PORTS; port ++) {
 303                         char name[32];
 304                         struct app_lcore_params_io *lp_io = NULL;
 305                         struct rte_ring *ring;
 306                         uint32_t socket_io, lcore_io;
 307
 308                         if (app.nic_tx_port_mask[port] == 0) {
 309                                 continue;
 310                         }
 311
 312                         if (app_get_lcore_for_nic_tx((uint8_t) port, &lcore_io) < 0) {
 313                                 rte_panic("Algorithmic error (no I/O core to handle TX of port %u)\n",
 314                                         port);
 315                         }
 316
 317                         lp_io = &app.lcore_params[lcore_io].io;
 318                         socket_io = rte_lcore_to_socket_id(lcore_io);
 319
 320                         printf("Creating ring to connect worker lcore %u with TX port %u (through I/O lcore %u) (socket %u) ...\n",
 321                                 lcore, port, (unsigned)lcore_io, (unsigned)socket_io);
 322                         snprintf(name, sizeof(name), "app_ring_tx_s%u_w%u_p%u", socket_io, lcore, port);
 323                         ring = rte_ring_create(
 324                                 name,
 325                                 app.ring_tx_size,
 326                                 socket_io,
 327                                 RING_F_SP_ENQ | RING_F_SC_DEQ);
 328                         if (ring == NULL) {
 329                                 rte_panic("Cannot create ring to connect worker core %u with TX port %u\n",
 330                                         lcore,
 331                                         port);
 332                         }
 333
 334                         lp_worker->rings_out[port] = ring;
 335                         lp_io->tx.rings[port][lp_worker->worker_id] = ring;
 336                 }
 337         }
 338
 339         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 340                 struct app_lcore_params_io *lp_io = &app.lcore_params[lcore].io;
 341                 unsigned i;
 342
 343                 if ((app.lcore_params[lcore].type != e_APP_LCORE_IO) ||
 344                     (lp_io->tx.n_nic_ports == 0)) {
 345                         continue;
 346                 }
 347
 348                 for (i = 0; i < lp_io->tx.n_nic_ports; i ++){
 349                         unsigned port, j;
 350
 351                         port = lp_io->tx.nic_ports[i];
 352                         for (j = 0; j < app_get_lcores_worker(); j ++) {
 353                                 if (lp_io->tx.rings[port][j] == NULL) {
 354                                         rte_panic("Algorithmic error (I/O TX rings)\n");
 355                                 }
 356                         }
 357                 }
 358         }
 359 }
 360
 361 /* Check the link status of all ports in up to 9s, and print them finally */
 362 static void
 363 check_all_ports_link_status(uint8_t port_num, uint32_t port_mask)
 364 {
 365 #define CHECK_INTERVAL 100 /* 100ms */
 366 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
 367         uint8_t portid, count, all_ports_up, print_flag = 0;
 368         struct rte_eth_link link;
 369         uint32_t n_rx_queues, n_tx_queues;
 370
 371         printf("\nChecking link status");
 372         fflush(stdout);
 373         for (count = 0; count <= MAX_CHECK_TIME; count++) {
 374                 all_ports_up = 1;
 375                 for (portid = 0; portid < port_num; portid++) {
 376                         if ((port_mask & (1 << portid)) == 0)
 377                                 continue;
 378                         n_rx_queues = app_get_nic_rx_queues_per_port(portid);
 379                         n_tx_queues = app.nic_tx_port_mask[portid];
 380                         if ((n_rx_queues == 0) && (n_tx_queues == 0))
 381                                 continue;
 382                         memset(&link, 0, sizeof(link));
 383                         rte_eth_link_get_nowait(portid, &link);
 384                         /* print link status if flag set */
 385                         if (print_flag == 1) {
 386                                 if (link.link_status)
 387                                         printf("Port %d Link Up - speed %u "
 388                                                 "Mbps - %s\n", (uint8_t)portid,
 389                                                 (unsigned)link.link_speed,
 390                                 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
 391                                         ("full-duplex") : ("half-duplex\n"));
 392                                 else
 393                                         printf("Port %d Link Down\n",
 394                                                         (uint8_t)portid);
 395                                 continue;
 396                         }
 397                         /* clear all_ports_up flag if any link down */
 398                         if (link.link_status == ETH_LINK_DOWN) {
 399                                 all_ports_up = 0;
 400                                 break;
 401                         }
 402                 }
 403                 /* after finally printing all link status, get out */
 404                 if (print_flag == 1)
 405                         break;
 406
 407                 if (all_ports_up == 0) {
 408                         printf(".");
 409                         fflush(stdout);
 410                         rte_delay_ms(CHECK_INTERVAL);
 411                 }
 412
 413                 /* set the print_flag if all ports up or timeout */
 414                 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
 415                         print_flag = 1;
 416                         printf("done\n");
 417                 }
 418         }
 419 }
 420
 421 static void
 422 app_init_nics(void)
 423 {
 424         unsigned socket;
 425         uint32_t lcore;
 426         uint8_t port, queue;
 427         int ret;
 428         uint32_t n_rx_queues, n_tx_queues;
 429
 430         /* Init NIC ports and queues, then start the ports */
 431         for (port = 0; port < APP_MAX_NIC_PORTS; port ++) {
 432                 struct rte_mempool *pool;
 433
 434                 n_rx_queues = app_get_nic_rx_queues_per_port(port);
 435                 n_tx_queues = app.nic_tx_port_mask[port];
 436
 437                 if ((n_rx_queues == 0) && (n_tx_queues == 0)) {
 438                         continue;
 439                 }
 440
 441                 /* Init port */
 442                 printf("Initializing NIC port %u ...\n", (unsigned) port);
 443                 ret = rte_eth_dev_configure(
 444                         port,
 445                         (uint8_t) n_rx_queues,
 446                         (uint8_t) n_tx_queues,
 447                         &port_conf);
 448                 if (ret < 0) {
 449                         rte_panic("Cannot init NIC port %u (%d)\n", (unsigned) port, ret);
 450                 }
 451                 rte_eth_promiscuous_enable(port);
 452
 453                 /* Init RX queues */
 454                 for (queue = 0; queue < APP_MAX_RX_QUEUES_PER_NIC_PORT; queue ++) {
 455                         if (app.nic_rx_queue_mask[port][queue] == 0) {
 456                                 continue;
 457                         }
 458
 459                         app_get_lcore_for_nic_rx(port, queue, &lcore);
 460                         socket = rte_lcore_to_socket_id(lcore);
 461                         pool = app.lcore_params[lcore].pool;
 462
 463                         printf("Initializing NIC port %u RX queue %u ...\n",
 464                                 (unsigned) port,
 465                                 (unsigned) queue);
 466                         ret = rte_eth_rx_queue_setup(
 467                                 port,
 468                                 queue,
 469                                 (uint16_t) app.nic_rx_ring_size,
 470                                 socket,
 471                                 NULL,
 472                                 pool);
 473                         if (ret < 0) {
 474                                 rte_panic("Cannot init RX queue %u for port %u (%d)\n",
 475                                         (unsigned) queue,
 476                                         (unsigned) port,
 477                                         ret);
 478                         }
 479                 }
 480
 481                 /* Init TX queues */
 482                 if (app.nic_tx_port_mask[port] == 1) {
 483                         app_get_lcore_for_nic_tx(port, &lcore);
 484                         socket = rte_lcore_to_socket_id(lcore);
 485                         printf("Initializing NIC port %u TX queue 0 ...\n",
 486                                 (unsigned) port);
 487                         ret = rte_eth_tx_queue_setup(
 488                                 port,
 489                                 0,
 490                                 (uint16_t) app.nic_tx_ring_size,
 491                                 socket,
 492                                 NULL);
 493                         if (ret < 0) {
 494                                 rte_panic("Cannot init TX queue 0 for port %d (%d)\n",
 495                                         port,
 496                                         ret);
 497                         }
 498                 }
 499
 500                 /* Start port */
 501                 ret = rte_eth_dev_start(port);
 502                 if (ret < 0) {
 503                         rte_panic("Cannot start port %d (%d)\n", port, ret);
 504                 }
 505         }
 506
 507         check_all_ports_link_status(APP_MAX_NIC_PORTS, (~0x0));
 508 }
 509
 510 void
 511 app_init(void)
 512 {
 513         app_assign_worker_ids();
 514         app_init_mbuf_pools();
 515         app_init_lpm_tables();
 516         app_init_rings_rx();
 517         app_init_rings_tx();
 518         app_init_nics();
 519
 520         printf("Initialization completed.\n");
 521 }