examples/load_balancer/init.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2010-2012 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  *  version: DPDK.L.1.2.3-3
  34  */
  35
  36 #include <stdio.h>
  37 #include <stdlib.h>
  38 #include <stdint.h>
  39 #include <inttypes.h>
  40 #include <sys/types.h>
  41 #include <string.h>
  42 #include <sys/queue.h>
  43 #include <stdarg.h>
  44 #include <errno.h>
  45 #include <getopt.h>
  46
  47 #include <rte_common.h>
  48 #include <rte_byteorder.h>
  49 #include <rte_log.h>
  50 #include <rte_memory.h>
  51 #include <rte_memcpy.h>
  52 #include <rte_memzone.h>
  53 #include <rte_tailq.h>
  54 #include <rte_eal.h>
  55 #include <rte_per_lcore.h>
  56 #include <rte_launch.h>
  57 #include <rte_atomic.h>
  58 #include <rte_cycles.h>
  59 #include <rte_prefetch.h>
  60 #include <rte_lcore.h>
  61 #include <rte_per_lcore.h>
  62 #include <rte_branch_prediction.h>
  63 #include <rte_interrupts.h>
  64 #include <rte_pci.h>
  65 #include <rte_random.h>
  66 #include <rte_debug.h>
  67 #include <rte_ether.h>
  68 #include <rte_ethdev.h>
  69 #include <rte_ring.h>
  70 #include <rte_mempool.h>
  71 #include <rte_mbuf.h>
  72 #include <rte_string_fns.h>
  73 #include <rte_ip.h>
  74 #include <rte_tcp.h>
  75 #include <rte_lpm.h>
  76
  77 #include "main.h"
  78
  79 static struct rte_eth_conf port_conf = {
  80         .rxmode = {
  81                 .split_hdr_size = 0,
  82                 .header_split   = 0, /**< Header Split disabled */
  83                 .hw_ip_checksum = 1, /**< IP checksum offload enabled */
  84                 .hw_vlan_filter = 0, /**< VLAN filtering disabled */
  85                 .jumbo_frame    = 0, /**< Jumbo Frame Support disabled */
  86                 .hw_strip_crc   = 0, /**< CRC stripped by hardware */
  87         },
  88         .rx_adv_conf = {
  89                 .rss_conf = {
  90                         .rss_key = NULL,
  91                         .rss_hf = ETH_RSS_IPV4,
  92                 },
  93         },
  94         .txmode = {
  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 };
 106
 107 static struct rte_eth_txconf tx_conf = {
 108         .tx_thresh = {
 109                 .pthresh = APP_DEFAULT_NIC_TX_PTHRESH,
 110                 .hthresh = APP_DEFAULT_NIC_TX_HTHRESH,
 111                 .wthresh = APP_DEFAULT_NIC_TX_WTHRESH,
 112         },
 113         .tx_free_thresh = APP_DEFAULT_NIC_TX_FREE_THRESH,
 114         .tx_rs_thresh = APP_DEFAULT_NIC_TX_RS_THRESH,
 115 };
 116
 117 static void
 118 app_assign_worker_ids(void)
 119 {
 120         uint32_t lcore, worker_id;
 121
 122         /* Assign ID for each worker */
 123         worker_id = 0;
 124         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 125                 struct app_lcore_params_worker *lp_worker = &app.lcore_params[lcore].worker;
 126
 127                 if (app.lcore_params[lcore].type != e_APP_LCORE_WORKER) {
 128                         continue;
 129                 }
 130
 131                 lp_worker->worker_id = worker_id;
 132                 worker_id ++;
 133         }
 134 }
 135
 136 static void
 137 app_init_mbuf_pools(void)
 138 {
 139         uint32_t socket, lcore;
 140
 141         /* Init the buffer pools */
 142         for (socket = 0; socket < APP_MAX_SOCKETS; socket ++) {
 143                 char name[32];
 144                 if (app_is_socket_used(socket) == 0) {
 145                         continue;
 146                 }
 147
 148                 rte_snprintf(name, sizeof(name), "mbuf_pool_%u", socket);
 149                 printf("Creating the mbuf pool for socket %u ...\n", socket);
 150                 app.pools[socket] = rte_mempool_create(
 151                         name,
 152                         APP_DEFAULT_MEMPOOL_BUFFERS,
 153                         APP_DEFAULT_MBUF_SIZE,
 154                         APP_DEFAULT_MEMPOOL_CACHE_SIZE,
 155                         sizeof(struct rte_pktmbuf_pool_private),
 156                         rte_pktmbuf_pool_init, NULL,
 157                         rte_pktmbuf_init, NULL,
 158                         socket,
 159                         0);
 160                 if (app.pools[socket] == NULL) {
 161                         rte_panic("Cannot create mbuf pool on socket %u\n", socket);
 162                 }
 163         }
 164
 165         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 166                 if (app.lcore_params[lcore].type == e_APP_LCORE_DISABLED) {
 167                         continue;
 168                 }
 169
 170                 socket = rte_lcore_to_socket_id(lcore);
 171                 app.lcore_params[lcore].pool = app.pools[socket];
 172         }
 173 }
 174
 175 static void
 176 app_init_lpm_tables(void)
 177 {
 178         uint32_t socket, lcore;
 179
 180         /* Init the LPM tables */
 181         for (socket = 0; socket < APP_MAX_SOCKETS; socket ++) {
 182                 char name[32];
 183                 uint32_t rule;
 184
 185                 if (app_is_socket_used(socket) == 0) {
 186                         continue;
 187                 }
 188
 189                 rte_snprintf(name, sizeof(name), "lpm_table_%u", socket);
 190                 printf("Creating the LPM table for socket %u ...\n", socket);
 191                 app.lpm_tables[socket] = rte_lpm_create(
 192                         name,
 193                         socket,
 194                         APP_MAX_LPM_RULES,
 195                         RTE_LPM_MEMZONE);
 196                 if (app.lpm_tables[socket] == NULL) {
 197                         rte_panic("Unable to create LPM table on socket %u\n", socket);
 198                 }
 199
 200                 for (rule = 0; rule < app.n_lpm_rules; rule ++) {
 201                         int ret;
 202
 203                         ret = rte_lpm_add(app.lpm_tables[socket],
 204                                 app.lpm_rules[rule].ip,
 205                                 app.lpm_rules[rule].depth,
 206                                 app.lpm_rules[rule].if_out);
 207
 208                         if (ret < 0) {
 209                                 rte_panic("Unable to add entry %u (%x/%u => %u) to the LPM table on socket %u (%d)\n",
 210                                         rule, app.lpm_rules[rule].ip,
 211                                         (uint32_t) app.lpm_rules[rule].depth,
 212                                         (uint32_t) app.lpm_rules[rule].if_out,
 213                                         socket,
 214                                         ret);
 215                         }
 216                 }
 217
 218         }
 219
 220         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 221                 if (app.lcore_params[lcore].type != e_APP_LCORE_WORKER) {
 222                         continue;
 223                 }
 224
 225                 socket = rte_lcore_to_socket_id(lcore);
 226                 app.lcore_params[lcore].worker.lpm_table = app.lpm_tables[socket];
 227         }
 228 }
 229
 230 static void
 231 app_init_rings_rx(void)
 232 {
 233         uint32_t lcore;
 234
 235         /* Initialize the rings for the RX side */
 236         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 237                 struct app_lcore_params_io *lp_io = &app.lcore_params[lcore].io;
 238                 uint32_t socket_io, lcore_worker;
 239
 240                 if ((app.lcore_params[lcore].type != e_APP_LCORE_IO) ||
 241                     (lp_io->rx.n_nic_queues == 0)) {
 242                         continue;
 243                 }
 244
 245                 socket_io = rte_lcore_to_socket_id(lcore);
 246
 247                 for (lcore_worker = 0; lcore_worker < APP_MAX_LCORES; lcore_worker ++) {
 248                         char name[32];
 249                         struct app_lcore_params_worker *lp_worker = &app.lcore_params[lcore_worker].worker;
 250                         struct rte_ring *ring = NULL;
 251
 252                         if (app.lcore_params[lcore_worker].type != e_APP_LCORE_WORKER) {
 253                                 continue;
 254                         }
 255
 256                         printf("Creating ring to connect I/O lcore %u (socket %u) with worker lcore %u ...\n",
 257                                 lcore,
 258                                 socket_io,
 259                                 lcore_worker);
 260                         rte_snprintf(name, sizeof(name), "app_ring_rx_s%u_io%u_w%u",
 261                                 socket_io,
 262                                 lcore,
 263                                 lcore_worker);
 264                         ring = rte_ring_create(
 265                                 name,
 266                                 app.ring_rx_size,
 267                                 socket_io,
 268                                 RING_F_SP_ENQ | RING_F_SC_DEQ);
 269                         if (ring == NULL) {
 270                                 rte_panic("Cannot create ring to connect I/O core %u with worker core %u\n",
 271                                         lcore,
 272                                         lcore_worker);
 273                         }
 274
 275                         lp_io->rx.rings[lp_io->rx.n_rings] = ring;
 276                         lp_io->rx.n_rings ++;
 277
 278                         lp_worker->rings_in[lp_worker->n_rings_in] = ring;
 279                         lp_worker->n_rings_in ++;
 280                 }
 281         }
 282
 283         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 284                 struct app_lcore_params_io *lp_io = &app.lcore_params[lcore].io;
 285
 286                 if ((app.lcore_params[lcore].type != e_APP_LCORE_IO) ||
 287                     (lp_io->rx.n_nic_queues == 0)) {
 288                         continue;
 289                 }
 290
 291                 if (lp_io->rx.n_rings != app_get_lcores_worker()) {
 292                         rte_panic("Algorithmic error (I/O RX rings)\n");
 293                 }
 294         }
 295
 296         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 297                 struct app_lcore_params_worker *lp_worker = &app.lcore_params[lcore].worker;
 298
 299                 if (app.lcore_params[lcore].type != e_APP_LCORE_WORKER) {
 300                         continue;
 301                 }
 302
 303                 if (lp_worker->n_rings_in != app_get_lcores_io_rx()) {
 304                         rte_panic("Algorithmic error (worker input rings)\n");
 305                 }
 306         }
 307 }
 308
 309 static void
 310 app_init_rings_tx(void)
 311 {
 312         uint32_t lcore;
 313
 314         /* Initialize the rings for the TX side */
 315         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 316                 struct app_lcore_params_worker *lp_worker = &app.lcore_params[lcore].worker;
 317                 uint32_t port;
 318
 319                 if (app.lcore_params[lcore].type != e_APP_LCORE_WORKER) {
 320                         continue;
 321                 }
 322
 323                 for (port = 0; port < APP_MAX_NIC_PORTS; port ++) {
 324                         char name[32];
 325                         struct app_lcore_params_io *lp_io = NULL;
 326                         struct rte_ring *ring;
 327                         uint32_t socket_io, lcore_io;
 328
 329                         if (app.nic_tx_port_mask[port] == 0) {
 330                                 continue;
 331                         }
 332
 333                         if (app_get_lcore_for_nic_tx((uint8_t) port, &lcore_io) < 0) {
 334                                 rte_panic("Algorithmic error (no I/O core to handle TX of port %u)\n",
 335                                         port);
 336                         }
 337
 338                         lp_io = &app.lcore_params[lcore_io].io;
 339                         socket_io = rte_lcore_to_socket_id(lcore_io);
 340
 341                         printf("Creating ring to connect worker lcore %u with TX port %u (through I/O lcore %u) (socket %u) ...\n",
 342                                 lcore, port, lcore_io, socket_io);
 343                         rte_snprintf(name, sizeof(name), "app_ring_tx_s%u_w%u_p%u", socket_io, lcore, port);
 344                         ring = rte_ring_create(
 345                                 name,
 346                                 app.ring_tx_size,
 347                                 socket_io,
 348                                 RING_F_SP_ENQ | RING_F_SC_DEQ);
 349                         if (ring == NULL) {
 350                                 rte_panic("Cannot create ring to connect worker core %u with TX port %u\n",
 351                                         lcore,
 352                                         port);
 353                         }
 354
 355                         lp_worker->rings_out[port] = ring;
 356                         lp_io->tx.rings[port][lp_worker->worker_id] = ring;
 357                 }
 358         }
 359
 360         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 361                 struct app_lcore_params_io *lp_io = &app.lcore_params[lcore].io;
 362                 uint32_t i;
 363
 364                 if ((app.lcore_params[lcore].type != e_APP_LCORE_IO) ||
 365                     (lp_io->tx.n_nic_ports == 0)) {
 366                         continue;
 367                 }
 368
 369                 for (i = 0; i < lp_io->tx.n_nic_ports; i ++){
 370                         uint32_t port, j;
 371
 372                         port = lp_io->tx.nic_ports[i];
 373                         for (j = 0; j < app_get_lcores_worker(); j ++) {
 374                                 if (lp_io->tx.rings[port][j] == NULL) {
 375                                         rte_panic("Algorithmic error (I/O TX rings)\n");
 376                                 }
 377                         }
 378                 }
 379         }
 380 }
 381
 382 static void
 383 app_init_nics(void)
 384 {
 385         uint32_t socket, lcore;
 386         uint8_t port, queue;
 387         int ret;
 388
 389         /* Init driver */
 390         printf("Initializing the PMD driver ...\n");
 391 #ifdef RTE_LIBRTE_IGB_PMD
 392         if (rte_igb_pmd_init() < 0) {
 393                 rte_panic("Cannot init IGB PMD\n");
 394         }
 395 #endif
 396 #ifdef RTE_LIBRTE_IXGBE_PMD
 397         if (rte_ixgbe_pmd_init() < 0) {
 398                 rte_panic("Cannot init IXGBE PMD\n");
 399         }
 400 #endif
 401         if (rte_eal_pci_probe() < 0) {
 402                 rte_panic("Cannot probe PCI\n");
 403         }
 404
 405         /* Init NIC ports and queues, then start the ports */
 406         for (port = 0; port < APP_MAX_NIC_PORTS; port ++) {
 407                 struct rte_eth_link link;
 408                 struct rte_mempool *pool;
 409                 uint32_t n_rx_queues, n_tx_queues;
 410
 411                 n_rx_queues = app_get_nic_rx_queues_per_port(port);
 412                 n_tx_queues = app.nic_tx_port_mask[port];
 413
 414                 if ((n_rx_queues == 0) && (n_tx_queues == 0)) {
 415                         continue;
 416                 }
 417
 418                 /* Init port */
 419                 printf("Initializing NIC port %u ...\n", (uint32_t) port);
 420                 ret = rte_eth_dev_configure(
 421                         port,
 422                         (uint8_t) n_rx_queues,
 423                         (uint8_t) n_tx_queues,
 424                         &port_conf);
 425                 if (ret < 0) {
 426                         rte_panic("Cannot init NIC port %u (%d)\n", (uint32_t) port, ret);
 427                 }
 428                 rte_eth_promiscuous_enable(port);
 429
 430                 /* Init RX queues */
 431                 for (queue = 0; queue < APP_MAX_RX_QUEUES_PER_NIC_PORT; queue ++) {
 432                         if (app.nic_rx_queue_mask[port][queue] == 0) {
 433                                 continue;
 434                         }
 435
 436                         app_get_lcore_for_nic_rx(port, queue, &lcore);
 437                         socket = rte_lcore_to_socket_id(lcore);
 438                         pool = app.lcore_params[lcore].pool;
 439
 440                         printf("Initializing NIC port %u RX queue %u ...\n",
 441                                 (uint32_t) port,
 442                                 (uint32_t) queue);
 443                         ret = rte_eth_rx_queue_setup(
 444                                 port,
 445                                 queue,
 446                                 (uint16_t) app.nic_rx_ring_size,
 447                                 socket,
 448                                 &rx_conf,
 449                                 pool);
 450                         if (ret < 0) {
 451                                 rte_panic("Cannot init RX queue %u for port %u (%d)\n",
 452                                         (uint32_t) queue,
 453                                         (uint32_t) port,
 454                                         ret);
 455                         }
 456                 }
 457
 458                 /* Init TX queues */
 459                 if (app.nic_tx_port_mask[port] == 1) {
 460                         app_get_lcore_for_nic_tx(port, &lcore);
 461                         socket = rte_lcore_to_socket_id(lcore);
 462                         printf("Initializing NIC port %u TX queue 0 ...\n",
 463                                 (uint32_t) port);
 464                         ret = rte_eth_tx_queue_setup(
 465                                 port,
 466                                 0,
 467                                 (uint16_t) app.nic_tx_ring_size,
 468                                 socket,
 469                                 &tx_conf);
 470                         if (ret < 0) {
 471                                 rte_panic("Cannot init TX queue 0 for port %d (%d)\n",
 472                                         port,
 473                                         ret);
 474                         }
 475                 }
 476
 477                 /* Start port */
 478                 ret = rte_eth_dev_start(port);
 479                 if (ret < 0) {
 480                         rte_panic("Cannot start port %d (%d)\n", port, ret);
 481                 }
 482
 483                 /* Get link status */
 484                 rte_eth_link_get(port, &link);
 485                 if (link.link_status) {
 486                         printf("Port %u is UP (%u Mbps)\n",
 487                                 (uint32_t) port,
 488                                 (unsigned) link.link_speed);
 489                 } else {
 490                         printf("Port %u is DOWN\n",
 491                                 (uint32_t) port);
 492                 }
 493         }
 494 }
 495
 496 void
 497 app_init(void)
 498 {
 499         app_assign_worker_ids();
 500         app_init_mbuf_pools();
 501         app_init_lpm_tables();
 502         app_init_rings_rx();
 503         app_init_rings_tx();
 504         app_init_nics();
 505
 506         printf("Initialization completed.\n");
 507 }