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_eal.h>
  51 #include <rte_launch.h>
  52 #include <rte_atomic.h>
  53 #include <rte_cycles.h>
  54 #include <rte_prefetch.h>
  55 #include <rte_lcore.h>
  56 #include <rte_per_lcore.h>
  57 #include <rte_branch_prediction.h>
  58 #include <rte_interrupts.h>
  59 #include <rte_random.h>
  60 #include <rte_debug.h>
  61 #include <rte_ether.h>
  62 #include <rte_ethdev.h>
  63 #include <rte_ring.h>
  64 #include <rte_mempool.h>
  65 #include <rte_mbuf.h>
  66 #include <rte_string_fns.h>
  67 #include <rte_ip.h>
  68 #include <rte_tcp.h>
  69 #include <rte_lpm.h>
  70
  71 #include "main.h"
  72
  73 static struct rte_eth_conf port_conf = {
  74         .rxmode = {
  75                 .mq_mode        = ETH_MQ_RX_RSS,
  76                 .split_hdr_size = 0,
  77                 .header_split   = 0, /**< Header Split disabled */
  78                 .hw_ip_checksum = 1, /**< IP checksum offload enabled */
  79                 .hw_vlan_filter = 0, /**< VLAN filtering disabled */
  80                 .jumbo_frame    = 0, /**< Jumbo Frame Support disabled */
  81                 .hw_strip_crc   = 1, /**< CRC stripped by hardware */
  82         },
  83         .rx_adv_conf = {
  84                 .rss_conf = {
  85                         .rss_key = NULL,
  86                         .rss_hf = ETH_RSS_IP,
  87                 },
  88         },
  89         .txmode = {
  90                 .mq_mode = ETH_MQ_TX_NONE,
  91         },
  92 };
  93
  94 static void
  95 app_assign_worker_ids(void)
  96 {
  97         uint32_t lcore, worker_id;
  98
  99         /* Assign ID for each worker */
 100         worker_id = 0;
 101         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 102                 struct app_lcore_params_worker *lp_worker = &app.lcore_params[lcore].worker;
 103
 104                 if (app.lcore_params[lcore].type != e_APP_LCORE_WORKER) {
 105                         continue;
 106                 }
 107
 108                 lp_worker->worker_id = worker_id;
 109                 worker_id ++;
 110         }
 111 }
 112
 113 static void
 114 app_init_mbuf_pools(void)
 115 {
 116         unsigned socket, lcore;
 117
 118         /* Init the buffer pools */
 119         for (socket = 0; socket < APP_MAX_SOCKETS; socket ++) {
 120                 char name[32];
 121                 if (app_is_socket_used(socket) == 0) {
 122                         continue;
 123                 }
 124
 125                 snprintf(name, sizeof(name), "mbuf_pool_%u", socket);
 126                 printf("Creating the mbuf pool for socket %u ...\n", socket);
 127                 app.pools[socket] = rte_pktmbuf_pool_create(
 128                         name, APP_DEFAULT_MEMPOOL_BUFFERS,
 129                         APP_DEFAULT_MEMPOOL_CACHE_SIZE,
 130                         0, APP_DEFAULT_MBUF_DATA_SIZE, socket);
 131                 if (app.pools[socket] == NULL) {
 132                         rte_panic("Cannot create mbuf pool on socket %u\n", socket);
 133                 }
 134         }
 135
 136         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 137                 if (app.lcore_params[lcore].type == e_APP_LCORE_DISABLED) {
 138                         continue;
 139                 }
 140
 141                 socket = rte_lcore_to_socket_id(lcore);
 142                 app.lcore_params[lcore].pool = app.pools[socket];
 143         }
 144 }
 145
 146 static void
 147 app_init_lpm_tables(void)
 148 {
 149         unsigned socket, lcore;
 150
 151         /* Init the LPM tables */
 152         for (socket = 0; socket < APP_MAX_SOCKETS; socket ++) {
 153                 char name[32];
 154                 uint32_t rule;
 155
 156                 if (app_is_socket_used(socket) == 0) {
 157                         continue;
 158                 }
 159
 160                 struct rte_lpm_config lpm_config;
 161
 162                 lpm_config.max_rules = APP_MAX_LPM_RULES;
 163                 lpm_config.number_tbl8s = 256;
 164                 lpm_config.flags = 0;
 165                 snprintf(name, sizeof(name), "lpm_table_%u", socket);
 166                 printf("Creating the LPM table for socket %u ...\n", socket);
 167                 app.lpm_tables[socket] = rte_lpm_create(
 168                         name,
 169                         socket,
 170                         &lpm_config);
 171                 if (app.lpm_tables[socket] == NULL) {
 172                         rte_panic("Unable to create LPM table on socket %u\n", socket);
 173                 }
 174
 175                 for (rule = 0; rule < app.n_lpm_rules; rule ++) {
 176                         int ret;
 177
 178                         ret = rte_lpm_add(app.lpm_tables[socket],
 179                                 app.lpm_rules[rule].ip,
 180                                 app.lpm_rules[rule].depth,
 181                                 app.lpm_rules[rule].if_out);
 182
 183                         if (ret < 0) {
 184                                 rte_panic("Unable to add entry %u (%x/%u => %u) to the LPM table on socket %u (%d)\n",
 185                                         (unsigned) rule,
 186                                         (unsigned) app.lpm_rules[rule].ip,
 187                                         (unsigned) app.lpm_rules[rule].depth,
 188                                         (unsigned) app.lpm_rules[rule].if_out,
 189                                         socket,
 190                                         ret);
 191                         }
 192                 }
 193
 194         }
 195
 196         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 197                 if (app.lcore_params[lcore].type != e_APP_LCORE_WORKER) {
 198                         continue;
 199                 }
 200
 201                 socket = rte_lcore_to_socket_id(lcore);
 202                 app.lcore_params[lcore].worker.lpm_table = app.lpm_tables[socket];
 203         }
 204 }
 205
 206 static void
 207 app_init_rings_rx(void)
 208 {
 209         unsigned lcore;
 210
 211         /* Initialize the rings for the RX side */
 212         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 213                 struct app_lcore_params_io *lp_io = &app.lcore_params[lcore].io;
 214                 unsigned socket_io, lcore_worker;
 215
 216                 if ((app.lcore_params[lcore].type != e_APP_LCORE_IO) ||
 217                     (lp_io->rx.n_nic_queues == 0)) {
 218                         continue;
 219                 }
 220
 221                 socket_io = rte_lcore_to_socket_id(lcore);
 222
 223                 for (lcore_worker = 0; lcore_worker < APP_MAX_LCORES; lcore_worker ++) {
 224                         char name[32];
 225                         struct app_lcore_params_worker *lp_worker = &app.lcore_params[lcore_worker].worker;
 226                         struct rte_ring *ring = NULL;
 227
 228                         if (app.lcore_params[lcore_worker].type != e_APP_LCORE_WORKER) {
 229                                 continue;
 230                         }
 231
 232                         printf("Creating ring to connect I/O lcore %u (socket %u) with worker lcore %u ...\n",
 233                                 lcore,
 234                                 socket_io,
 235                                 lcore_worker);
 236                         snprintf(name, sizeof(name), "app_ring_rx_s%u_io%u_w%u",
 237                                 socket_io,
 238                                 lcore,
 239                                 lcore_worker);
 240                         ring = rte_ring_create(
 241                                 name,
 242                                 app.ring_rx_size,
 243                                 socket_io,
 244                                 RING_F_SP_ENQ | RING_F_SC_DEQ);
 245                         if (ring == NULL) {
 246                                 rte_panic("Cannot create ring to connect I/O core %u with worker core %u\n",
 247                                         lcore,
 248                                         lcore_worker);
 249                         }
 250
 251                         lp_io->rx.rings[lp_io->rx.n_rings] = ring;
 252                         lp_io->rx.n_rings ++;
 253
 254                         lp_worker->rings_in[lp_worker->n_rings_in] = ring;
 255                         lp_worker->n_rings_in ++;
 256                 }
 257         }
 258
 259         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 260                 struct app_lcore_params_io *lp_io = &app.lcore_params[lcore].io;
 261
 262                 if ((app.lcore_params[lcore].type != e_APP_LCORE_IO) ||
 263                     (lp_io->rx.n_nic_queues == 0)) {
 264                         continue;
 265                 }
 266
 267                 if (lp_io->rx.n_rings != app_get_lcores_worker()) {
 268                         rte_panic("Algorithmic error (I/O RX rings)\n");
 269                 }
 270         }
 271
 272         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 273                 struct app_lcore_params_worker *lp_worker = &app.lcore_params[lcore].worker;
 274
 275                 if (app.lcore_params[lcore].type != e_APP_LCORE_WORKER) {
 276                         continue;
 277                 }
 278
 279                 if (lp_worker->n_rings_in != app_get_lcores_io_rx()) {
 280                         rte_panic("Algorithmic error (worker input rings)\n");
 281                 }
 282         }
 283 }
 284
 285 static void
 286 app_init_rings_tx(void)
 287 {
 288         unsigned lcore;
 289
 290         /* Initialize the rings for the TX side */
 291         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 292                 struct app_lcore_params_worker *lp_worker = &app.lcore_params[lcore].worker;
 293                 unsigned port;
 294
 295                 if (app.lcore_params[lcore].type != e_APP_LCORE_WORKER) {
 296                         continue;
 297                 }
 298
 299                 for (port = 0; port < APP_MAX_NIC_PORTS; port ++) {
 300                         char name[32];
 301                         struct app_lcore_params_io *lp_io = NULL;
 302                         struct rte_ring *ring;
 303                         uint32_t socket_io, lcore_io;
 304
 305                         if (app.nic_tx_port_mask[port] == 0) {
 306                                 continue;
 307                         }
 308
 309                         if (app_get_lcore_for_nic_tx(port, &lcore_io) < 0) {
 310                                 rte_panic("Algorithmic error (no I/O core to handle TX of port %u)\n",
 311                                         port);
 312                         }
 313
 314                         lp_io = &app.lcore_params[lcore_io].io;
 315                         socket_io = rte_lcore_to_socket_id(lcore_io);
 316
 317                         printf("Creating ring to connect worker lcore %u with TX port %u (through I/O lcore %u) (socket %u) ...\n",
 318                                 lcore, port, (unsigned)lcore_io, (unsigned)socket_io);
 319                         snprintf(name, sizeof(name), "app_ring_tx_s%u_w%u_p%u", socket_io, lcore, port);
 320                         ring = rte_ring_create(
 321                                 name,
 322                                 app.ring_tx_size,
 323                                 socket_io,
 324                                 RING_F_SP_ENQ | RING_F_SC_DEQ);
 325                         if (ring == NULL) {
 326                                 rte_panic("Cannot create ring to connect worker core %u with TX port %u\n",
 327                                         lcore,
 328                                         port);
 329                         }
 330
 331                         lp_worker->rings_out[port] = ring;
 332                         lp_io->tx.rings[port][lp_worker->worker_id] = ring;
 333                 }
 334         }
 335
 336         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 337                 struct app_lcore_params_io *lp_io = &app.lcore_params[lcore].io;
 338                 unsigned i;
 339
 340                 if ((app.lcore_params[lcore].type != e_APP_LCORE_IO) ||
 341                     (lp_io->tx.n_nic_ports == 0)) {
 342                         continue;
 343                 }
 344
 345                 for (i = 0; i < lp_io->tx.n_nic_ports; i ++){
 346                         unsigned port, j;
 347
 348                         port = lp_io->tx.nic_ports[i];
 349                         for (j = 0; j < app_get_lcores_worker(); j ++) {
 350                                 if (lp_io->tx.rings[port][j] == NULL) {
 351                                         rte_panic("Algorithmic error (I/O TX rings)\n");
 352                                 }
 353                         }
 354                 }
 355         }
 356 }
 357
 358 /* Check the link status of all ports in up to 9s, and print them finally */
 359 static void
 360 check_all_ports_link_status(uint16_t port_num, uint32_t port_mask)
 361 {
 362 #define CHECK_INTERVAL 100 /* 100ms */
 363 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
 364         uint16_t portid;
 365         uint8_t count, all_ports_up, print_flag = 0;
 366         struct rte_eth_link link;
 367         uint32_t n_rx_queues, n_tx_queues;
 368
 369         printf("\nChecking link status");
 370         fflush(stdout);
 371         for (count = 0; count <= MAX_CHECK_TIME; count++) {
 372                 all_ports_up = 1;
 373                 for (portid = 0; portid < port_num; portid++) {
 374                         if ((port_mask & (1 << portid)) == 0)
 375                                 continue;
 376                         n_rx_queues = app_get_nic_rx_queues_per_port(portid);
 377                         n_tx_queues = app.nic_tx_port_mask[portid];
 378                         if ((n_rx_queues == 0) && (n_tx_queues == 0))
 379                                 continue;
 380                         memset(&link, 0, sizeof(link));
 381                         rte_eth_link_get_nowait(portid, &link);
 382                         /* print link status if flag set */
 383                         if (print_flag == 1) {
 384                                 if (link.link_status)
 385                                         printf(
 386                                         "Port%d Link Up - speed %uMbps - %s\n",
 387                                                 portid, link.link_speed,
 388                                 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
 389                                         ("full-duplex") : ("half-duplex\n"));
 390                                 else
 391                                         printf("Port %d Link Down\n", portid);
 392                                 continue;
 393                         }
 394                         /* clear all_ports_up flag if any link down */
 395                         if (link.link_status == ETH_LINK_DOWN) {
 396                                 all_ports_up = 0;
 397                                 break;
 398                         }
 399                 }
 400                 /* after finally printing all link status, get out */
 401                 if (print_flag == 1)
 402                         break;
 403
 404                 if (all_ports_up == 0) {
 405                         printf(".");
 406                         fflush(stdout);
 407                         rte_delay_ms(CHECK_INTERVAL);
 408                 }
 409
 410                 /* set the print_flag if all ports up or timeout */
 411                 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
 412                         print_flag = 1;
 413                         printf("done\n");
 414                 }
 415         }
 416 }
 417
 418 static void
 419 app_init_nics(void)
 420 {
 421         unsigned socket;
 422         uint32_t lcore;
 423         uint16_t port;
 424         uint8_t queue;
 425         int ret;
 426         uint32_t n_rx_queues, n_tx_queues;
 427
 428         /* Init NIC ports and queues, then start the ports */
 429         for (port = 0; port < APP_MAX_NIC_PORTS; port ++) {
 430                 struct rte_mempool *pool;
 431                 uint16_t nic_rx_ring_size;
 432                 uint16_t nic_tx_ring_size;
 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", 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", port, ret);
 450                 }
 451                 rte_eth_promiscuous_enable(port);
 452
 453                 nic_rx_ring_size = app.nic_rx_ring_size;
 454                 nic_tx_ring_size = app.nic_tx_ring_size;
 455                 ret = rte_eth_dev_adjust_nb_rx_tx_desc(
 456                         port, &nic_rx_ring_size, &nic_tx_ring_size);
 457                 if (ret < 0) {
 458                         rte_panic("Cannot adjust number of descriptors for port %u (%d)\n",
 459                                   port, ret);
 460                 }
 461                 app.nic_rx_ring_size = nic_rx_ring_size;
 462                 app.nic_tx_ring_size = nic_tx_ring_size;
 463
 464                 /* Init RX queues */
 465                 for (queue = 0; queue < APP_MAX_RX_QUEUES_PER_NIC_PORT; queue ++) {
 466                         if (app.nic_rx_queue_mask[port][queue] == 0) {
 467                                 continue;
 468                         }
 469
 470                         app_get_lcore_for_nic_rx(port, queue, &lcore);
 471                         socket = rte_lcore_to_socket_id(lcore);
 472                         pool = app.lcore_params[lcore].pool;
 473
 474                         printf("Initializing NIC port %u RX queue %u ...\n",
 475                                 port, queue);
 476                         ret = rte_eth_rx_queue_setup(
 477                                 port,
 478                                 queue,
 479                                 (uint16_t) app.nic_rx_ring_size,
 480                                 socket,
 481                                 NULL,
 482                                 pool);
 483                         if (ret < 0) {
 484                                 rte_panic("Cannot init RX queue %u for port %u (%d)\n",
 485                                           queue, port, ret);
 486                         }
 487                 }
 488
 489                 /* Init TX queues */
 490                 if (app.nic_tx_port_mask[port] == 1) {
 491                         app_get_lcore_for_nic_tx(port, &lcore);
 492                         socket = rte_lcore_to_socket_id(lcore);
 493                         printf("Initializing NIC port %u TX queue 0 ...\n",
 494                                 port);
 495                         ret = rte_eth_tx_queue_setup(
 496                                 port,
 497                                 0,
 498                                 (uint16_t) app.nic_tx_ring_size,
 499                                 socket,
 500                                 NULL);
 501                         if (ret < 0) {
 502                                 rte_panic("Cannot init TX queue 0 for port %d (%d)\n",
 503                                         port,
 504                                         ret);
 505                         }
 506                 }
 507
 508                 /* Start port */
 509                 ret = rte_eth_dev_start(port);
 510                 if (ret < 0) {
 511                         rte_panic("Cannot start port %d (%d)\n", port, ret);
 512                 }
 513         }
 514
 515         check_all_ports_link_status(APP_MAX_NIC_PORTS, (~0x0));
 516 }
 517
 518 void
 519 app_init(void)
 520 {
 521         app_assign_worker_ids();
 522         app_init_mbuf_pools();
 523         app_init_lpm_tables();
 524         app_init_rings_rx();
 525         app_init_rings_tx();
 526         app_init_nics();
 527
 528         printf("Initialization completed.\n");
 529 }