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_launch.h>
  53 #include <rte_atomic.h>
  54 #include <rte_cycles.h>
  55 #include <rte_prefetch.h>
  56 #include <rte_lcore.h>
  57 #include <rte_per_lcore.h>
  58 #include <rte_branch_prediction.h>
  59 #include <rte_interrupts.h>
  60 #include <rte_pci.h>
  61 #include <rte_random.h>
  62 #include <rte_debug.h>
  63 #include <rte_ether.h>
  64 #include <rte_ethdev.h>
  65 #include <rte_ring.h>
  66 #include <rte_mempool.h>
  67 #include <rte_mbuf.h>
  68 #include <rte_string_fns.h>
  69 #include <rte_ip.h>
  70 #include <rte_tcp.h>
  71 #include <rte_lpm.h>
  72
  73 #include "main.h"
  74
  75 static struct rte_eth_conf port_conf = {
  76         .rxmode = {
  77                 .mq_mode        = ETH_MQ_RX_RSS,
  78                 .split_hdr_size = 0,
  79                 .header_split   = 0, /**< Header Split disabled */
  80                 .hw_ip_checksum = 1, /**< IP checksum offload enabled */
  81                 .hw_vlan_filter = 0, /**< VLAN filtering disabled */
  82                 .jumbo_frame    = 0, /**< Jumbo Frame Support disabled */
  83                 .hw_strip_crc   = 1, /**< CRC stripped by hardware */
  84         },
  85         .rx_adv_conf = {
  86                 .rss_conf = {
  87                         .rss_key = NULL,
  88                         .rss_hf = ETH_RSS_IP,
  89                 },
  90         },
  91         .txmode = {
  92                 .mq_mode = ETH_MQ_TX_NONE,
  93         },
  94 };
  95
  96 static void
  97 app_assign_worker_ids(void)
  98 {
  99         uint32_t lcore, worker_id;
 100
 101         /* Assign ID for each worker */
 102         worker_id = 0;
 103         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 104                 struct app_lcore_params_worker *lp_worker = &app.lcore_params[lcore].worker;
 105
 106                 if (app.lcore_params[lcore].type != e_APP_LCORE_WORKER) {
 107                         continue;
 108                 }
 109
 110                 lp_worker->worker_id = worker_id;
 111                 worker_id ++;
 112         }
 113 }
 114
 115 static void
 116 app_init_mbuf_pools(void)
 117 {
 118         unsigned socket, lcore;
 119
 120         /* Init the buffer pools */
 121         for (socket = 0; socket < APP_MAX_SOCKETS; socket ++) {
 122                 char name[32];
 123                 if (app_is_socket_used(socket) == 0) {
 124                         continue;
 125                 }
 126
 127                 snprintf(name, sizeof(name), "mbuf_pool_%u", socket);
 128                 printf("Creating the mbuf pool for socket %u ...\n", socket);
 129                 app.pools[socket] = rte_pktmbuf_pool_create(
 130                         name, APP_DEFAULT_MEMPOOL_BUFFERS,
 131                         APP_DEFAULT_MEMPOOL_CACHE_SIZE,
 132                         0, APP_DEFAULT_MBUF_DATA_SIZE, socket);
 133                 if (app.pools[socket] == NULL) {
 134                         rte_panic("Cannot create mbuf pool on socket %u\n", socket);
 135                 }
 136         }
 137
 138         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 139                 if (app.lcore_params[lcore].type == e_APP_LCORE_DISABLED) {
 140                         continue;
 141                 }
 142
 143                 socket = rte_lcore_to_socket_id(lcore);
 144                 app.lcore_params[lcore].pool = app.pools[socket];
 145         }
 146 }
 147
 148 static void
 149 app_init_lpm_tables(void)
 150 {
 151         unsigned socket, lcore;
 152
 153         /* Init the LPM tables */
 154         for (socket = 0; socket < APP_MAX_SOCKETS; socket ++) {
 155                 char name[32];
 156                 uint32_t rule;
 157
 158                 if (app_is_socket_used(socket) == 0) {
 159                         continue;
 160                 }
 161
 162                 struct rte_lpm_config lpm_config;
 163
 164                 lpm_config.max_rules = APP_MAX_LPM_RULES;
 165                 lpm_config.number_tbl8s = 256;
 166                 lpm_config.flags = 0;
 167                 snprintf(name, sizeof(name), "lpm_table_%u", socket);
 168                 printf("Creating the LPM table for socket %u ...\n", socket);
 169                 app.lpm_tables[socket] = rte_lpm_create(
 170                         name,
 171                         socket,
 172                         &lpm_config);
 173                 if (app.lpm_tables[socket] == NULL) {
 174                         rte_panic("Unable to create LPM table on socket %u\n", socket);
 175                 }
 176
 177                 for (rule = 0; rule < app.n_lpm_rules; rule ++) {
 178                         int ret;
 179
 180                         ret = rte_lpm_add(app.lpm_tables[socket],
 181                                 app.lpm_rules[rule].ip,
 182                                 app.lpm_rules[rule].depth,
 183                                 app.lpm_rules[rule].if_out);
 184
 185                         if (ret < 0) {
 186                                 rte_panic("Unable to add entry %u (%x/%u => %u) to the LPM table on socket %u (%d)\n",
 187                                         (unsigned) rule,
 188                                         (unsigned) app.lpm_rules[rule].ip,
 189                                         (unsigned) app.lpm_rules[rule].depth,
 190                                         (unsigned) app.lpm_rules[rule].if_out,
 191                                         socket,
 192                                         ret);
 193                         }
 194                 }
 195
 196         }
 197
 198         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 199                 if (app.lcore_params[lcore].type != e_APP_LCORE_WORKER) {
 200                         continue;
 201                 }
 202
 203                 socket = rte_lcore_to_socket_id(lcore);
 204                 app.lcore_params[lcore].worker.lpm_table = app.lpm_tables[socket];
 205         }
 206 }
 207
 208 static void
 209 app_init_rings_rx(void)
 210 {
 211         unsigned lcore;
 212
 213         /* Initialize the rings for the RX side */
 214         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 215                 struct app_lcore_params_io *lp_io = &app.lcore_params[lcore].io;
 216                 unsigned socket_io, lcore_worker;
 217
 218                 if ((app.lcore_params[lcore].type != e_APP_LCORE_IO) ||
 219                     (lp_io->rx.n_nic_queues == 0)) {
 220                         continue;
 221                 }
 222
 223                 socket_io = rte_lcore_to_socket_id(lcore);
 224
 225                 for (lcore_worker = 0; lcore_worker < APP_MAX_LCORES; lcore_worker ++) {
 226                         char name[32];
 227                         struct app_lcore_params_worker *lp_worker = &app.lcore_params[lcore_worker].worker;
 228                         struct rte_ring *ring = NULL;
 229
 230                         if (app.lcore_params[lcore_worker].type != e_APP_LCORE_WORKER) {
 231                                 continue;
 232                         }
 233
 234                         printf("Creating ring to connect I/O lcore %u (socket %u) with worker lcore %u ...\n",
 235                                 lcore,
 236                                 socket_io,
 237                                 lcore_worker);
 238                         snprintf(name, sizeof(name), "app_ring_rx_s%u_io%u_w%u",
 239                                 socket_io,
 240                                 lcore,
 241                                 lcore_worker);
 242                         ring = rte_ring_create(
 243                                 name,
 244                                 app.ring_rx_size,
 245                                 socket_io,
 246                                 RING_F_SP_ENQ | RING_F_SC_DEQ);
 247                         if (ring == NULL) {
 248                                 rte_panic("Cannot create ring to connect I/O core %u with worker core %u\n",
 249                                         lcore,
 250                                         lcore_worker);
 251                         }
 252
 253                         lp_io->rx.rings[lp_io->rx.n_rings] = ring;
 254                         lp_io->rx.n_rings ++;
 255
 256                         lp_worker->rings_in[lp_worker->n_rings_in] = ring;
 257                         lp_worker->n_rings_in ++;
 258                 }
 259         }
 260
 261         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 262                 struct app_lcore_params_io *lp_io = &app.lcore_params[lcore].io;
 263
 264                 if ((app.lcore_params[lcore].type != e_APP_LCORE_IO) ||
 265                     (lp_io->rx.n_nic_queues == 0)) {
 266                         continue;
 267                 }
 268
 269                 if (lp_io->rx.n_rings != app_get_lcores_worker()) {
 270                         rte_panic("Algorithmic error (I/O RX rings)\n");
 271                 }
 272         }
 273
 274         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 275                 struct app_lcore_params_worker *lp_worker = &app.lcore_params[lcore].worker;
 276
 277                 if (app.lcore_params[lcore].type != e_APP_LCORE_WORKER) {
 278                         continue;
 279                 }
 280
 281                 if (lp_worker->n_rings_in != app_get_lcores_io_rx()) {
 282                         rte_panic("Algorithmic error (worker input rings)\n");
 283                 }
 284         }
 285 }
 286
 287 static void
 288 app_init_rings_tx(void)
 289 {
 290         unsigned lcore;
 291
 292         /* Initialize the rings for the TX side */
 293         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 294                 struct app_lcore_params_worker *lp_worker = &app.lcore_params[lcore].worker;
 295                 unsigned port;
 296
 297                 if (app.lcore_params[lcore].type != e_APP_LCORE_WORKER) {
 298                         continue;
 299                 }
 300
 301                 for (port = 0; port < APP_MAX_NIC_PORTS; port ++) {
 302                         char name[32];
 303                         struct app_lcore_params_io *lp_io = NULL;
 304                         struct rte_ring *ring;
 305                         uint32_t socket_io, lcore_io;
 306
 307                         if (app.nic_tx_port_mask[port] == 0) {
 308                                 continue;
 309                         }
 310
 311                         if (app_get_lcore_for_nic_tx((uint8_t) port, &lcore_io) < 0) {
 312                                 rte_panic("Algorithmic error (no I/O core to handle TX of port %u)\n",
 313                                         port);
 314                         }
 315
 316                         lp_io = &app.lcore_params[lcore_io].io;
 317                         socket_io = rte_lcore_to_socket_id(lcore_io);
 318
 319                         printf("Creating ring to connect worker lcore %u with TX port %u (through I/O lcore %u) (socket %u) ...\n",
 320                                 lcore, port, (unsigned)lcore_io, (unsigned)socket_io);
 321                         snprintf(name, sizeof(name), "app_ring_tx_s%u_w%u_p%u", socket_io, lcore, port);
 322                         ring = rte_ring_create(
 323                                 name,
 324                                 app.ring_tx_size,
 325                                 socket_io,
 326                                 RING_F_SP_ENQ | RING_F_SC_DEQ);
 327                         if (ring == NULL) {
 328                                 rte_panic("Cannot create ring to connect worker core %u with TX port %u\n",
 329                                         lcore,
 330                                         port);
 331                         }
 332
 333                         lp_worker->rings_out[port] = ring;
 334                         lp_io->tx.rings[port][lp_worker->worker_id] = ring;
 335                 }
 336         }
 337
 338         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 339                 struct app_lcore_params_io *lp_io = &app.lcore_params[lcore].io;
 340                 unsigned i;
 341
 342                 if ((app.lcore_params[lcore].type != e_APP_LCORE_IO) ||
 343                     (lp_io->tx.n_nic_ports == 0)) {
 344                         continue;
 345                 }
 346
 347                 for (i = 0; i < lp_io->tx.n_nic_ports; i ++){
 348                         unsigned port, j;
 349
 350                         port = lp_io->tx.nic_ports[i];
 351                         for (j = 0; j < app_get_lcores_worker(); j ++) {
 352                                 if (lp_io->tx.rings[port][j] == NULL) {
 353                                         rte_panic("Algorithmic error (I/O TX rings)\n");
 354                                 }
 355                         }
 356                 }
 357         }
 358 }
 359
 360 /* Check the link status of all ports in up to 9s, and print them finally */
 361 static void
 362 check_all_ports_link_status(uint8_t port_num, uint32_t port_mask)
 363 {
 364 #define CHECK_INTERVAL 100 /* 100ms */
 365 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
 366         uint8_t portid, count, all_ports_up, print_flag = 0;
 367         struct rte_eth_link link;
 368         uint32_t n_rx_queues, n_tx_queues;
 369
 370         printf("\nChecking link status");
 371         fflush(stdout);
 372         for (count = 0; count <= MAX_CHECK_TIME; count++) {
 373                 all_ports_up = 1;
 374                 for (portid = 0; portid < port_num; portid++) {
 375                         if ((port_mask & (1 << portid)) == 0)
 376                                 continue;
 377                         n_rx_queues = app_get_nic_rx_queues_per_port(portid);
 378                         n_tx_queues = app.nic_tx_port_mask[portid];
 379                         if ((n_rx_queues == 0) && (n_tx_queues == 0))
 380                                 continue;
 381                         memset(&link, 0, sizeof(link));
 382                         rte_eth_link_get_nowait(portid, &link);
 383                         /* print link status if flag set */
 384                         if (print_flag == 1) {
 385                                 if (link.link_status)
 386                                         printf("Port %d Link Up - speed %u "
 387                                                 "Mbps - %s\n", (uint8_t)portid,
 388                                                 (unsigned)link.link_speed,
 389                                 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
 390                                         ("full-duplex") : ("half-duplex\n"));
 391                                 else
 392                                         printf("Port %d Link Down\n",
 393                                                         (uint8_t)portid);
 394                                 continue;
 395                         }
 396                         /* clear all_ports_up flag if any link down */
 397                         if (link.link_status == ETH_LINK_DOWN) {
 398                                 all_ports_up = 0;
 399                                 break;
 400                         }
 401                 }
 402                 /* after finally printing all link status, get out */
 403                 if (print_flag == 1)
 404                         break;
 405
 406                 if (all_ports_up == 0) {
 407                         printf(".");
 408                         fflush(stdout);
 409                         rte_delay_ms(CHECK_INTERVAL);
 410                 }
 411
 412                 /* set the print_flag if all ports up or timeout */
 413                 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
 414                         print_flag = 1;
 415                         printf("done\n");
 416                 }
 417         }
 418 }
 419
 420 static void
 421 app_init_nics(void)
 422 {
 423         unsigned socket;
 424         uint32_t lcore;
 425         uint8_t port, queue;
 426         int ret;
 427         uint32_t n_rx_queues, n_tx_queues;
 428
 429         /* Init NIC ports and queues, then start the ports */
 430         for (port = 0; port < APP_MAX_NIC_PORTS; port ++) {
 431                 struct rte_mempool *pool;
 432                 uint16_t nic_rx_ring_size;
 433                 uint16_t nic_tx_ring_size;
 434
 435                 n_rx_queues = app_get_nic_rx_queues_per_port(port);
 436                 n_tx_queues = app.nic_tx_port_mask[port];
 437
 438                 if ((n_rx_queues == 0) && (n_tx_queues == 0)) {
 439                         continue;
 440                 }
 441
 442                 /* Init port */
 443                 printf("Initializing NIC port %u ...\n", (unsigned) port);
 444                 ret = rte_eth_dev_configure(
 445                         port,
 446                         (uint8_t) n_rx_queues,
 447                         (uint8_t) n_tx_queues,
 448                         &port_conf);
 449                 if (ret < 0) {
 450                         rte_panic("Cannot init NIC port %u (%d)\n", (unsigned) port, ret);
 451                 }
 452                 rte_eth_promiscuous_enable(port);
 453
 454                 nic_rx_ring_size = app.nic_rx_ring_size;
 455                 nic_tx_ring_size = app.nic_tx_ring_size;
 456                 ret = rte_eth_dev_adjust_nb_rx_tx_desc(
 457                         port, &nic_rx_ring_size, &nic_tx_ring_size);
 458                 if (ret < 0) {
 459                         rte_panic("Cannot adjust number of descriptors for port %u (%d)\n",
 460                                 (unsigned) port, ret);
 461                 }
 462                 app.nic_rx_ring_size = nic_rx_ring_size;
 463                 app.nic_tx_ring_size = nic_tx_ring_size;
 464
 465                 /* Init RX queues */
 466                 for (queue = 0; queue < APP_MAX_RX_QUEUES_PER_NIC_PORT; queue ++) {
 467                         if (app.nic_rx_queue_mask[port][queue] == 0) {
 468                                 continue;
 469                         }
 470
 471                         app_get_lcore_for_nic_rx(port, queue, &lcore);
 472                         socket = rte_lcore_to_socket_id(lcore);
 473                         pool = app.lcore_params[lcore].pool;
 474
 475                         printf("Initializing NIC port %u RX queue %u ...\n",
 476                                 (unsigned) port,
 477                                 (unsigned) queue);
 478                         ret = rte_eth_rx_queue_setup(
 479                                 port,
 480                                 queue,
 481                                 (uint16_t) app.nic_rx_ring_size,
 482                                 socket,
 483                                 NULL,
 484                                 pool);
 485                         if (ret < 0) {
 486                                 rte_panic("Cannot init RX queue %u for port %u (%d)\n",
 487                                         (unsigned) queue,
 488                                         (unsigned) port,
 489                                         ret);
 490                         }
 491                 }
 492
 493                 /* Init TX queues */
 494                 if (app.nic_tx_port_mask[port] == 1) {
 495                         app_get_lcore_for_nic_tx(port, &lcore);
 496                         socket = rte_lcore_to_socket_id(lcore);
 497                         printf("Initializing NIC port %u TX queue 0 ...\n",
 498                                 (unsigned) port);
 499                         ret = rte_eth_tx_queue_setup(
 500                                 port,
 501                                 0,
 502                                 (uint16_t) app.nic_tx_ring_size,
 503                                 socket,
 504                                 NULL);
 505                         if (ret < 0) {
 506                                 rte_panic("Cannot init TX queue 0 for port %d (%d)\n",
 507                                         port,
 508                                         ret);
 509                         }
 510                 }
 511
 512                 /* Start port */
 513                 ret = rte_eth_dev_start(port);
 514                 if (ret < 0) {
 515                         rte_panic("Cannot start port %d (%d)\n", port, ret);
 516                 }
 517         }
 518
 519         check_all_ports_link_status(APP_MAX_NIC_PORTS, (~0x0));
 520 }
 521
 522 void
 523 app_init(void)
 524 {
 525         app_assign_worker_ids();
 526         app_init_mbuf_pools();
 527         app_init_lpm_tables();
 528         app_init_rings_rx();
 529         app_init_rings_tx();
 530         app_init_nics();
 531
 532         printf("Initialization completed.\n");
 533 }