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_mempool_create(
 131                         name,
 132                         APP_DEFAULT_MEMPOOL_BUFFERS,
 133                         APP_DEFAULT_MBUF_SIZE,
 134                         APP_DEFAULT_MEMPOOL_CACHE_SIZE,
 135                         sizeof(struct rte_pktmbuf_pool_private),
 136                         rte_pktmbuf_pool_init, NULL,
 137                         rte_pktmbuf_init, NULL,
 138                         socket,
 139                         0);
 140                 if (app.pools[socket] == NULL) {
 141                         rte_panic("Cannot create mbuf pool on socket %u\n", socket);
 142                 }
 143         }
 144
 145         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 146                 if (app.lcore_params[lcore].type == e_APP_LCORE_DISABLED) {
 147                         continue;
 148                 }
 149
 150                 socket = rte_lcore_to_socket_id(lcore);
 151                 app.lcore_params[lcore].pool = app.pools[socket];
 152         }
 153 }
 154
 155 static void
 156 app_init_lpm_tables(void)
 157 {
 158         unsigned socket, lcore;
 159
 160         /* Init the LPM tables */
 161         for (socket = 0; socket < APP_MAX_SOCKETS; socket ++) {
 162                 char name[32];
 163                 uint32_t rule;
 164
 165                 if (app_is_socket_used(socket) == 0) {
 166                         continue;
 167                 }
 168
 169                 snprintf(name, sizeof(name), "lpm_table_%u", socket);
 170                 printf("Creating the LPM table for socket %u ...\n", socket);
 171                 app.lpm_tables[socket] = rte_lpm_create(
 172                         name,
 173                         socket,
 174                         APP_MAX_LPM_RULES,
 175                         0);
 176                 if (app.lpm_tables[socket] == NULL) {
 177                         rte_panic("Unable to create LPM table on socket %u\n", socket);
 178                 }
 179
 180                 for (rule = 0; rule < app.n_lpm_rules; rule ++) {
 181                         int ret;
 182
 183                         ret = rte_lpm_add(app.lpm_tables[socket],
 184                                 app.lpm_rules[rule].ip,
 185                                 app.lpm_rules[rule].depth,
 186                                 app.lpm_rules[rule].if_out);
 187
 188                         if (ret < 0) {
 189                                 rte_panic("Unable to add entry %u (%x/%u => %u) to the LPM table on socket %u (%d)\n",
 190                                         (unsigned) rule,
 191                                         (unsigned) app.lpm_rules[rule].ip,
 192                                         (unsigned) app.lpm_rules[rule].depth,
 193                                         (unsigned) app.lpm_rules[rule].if_out,
 194                                         socket,
 195                                         ret);
 196                         }
 197                 }
 198
 199         }
 200
 201         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 202                 if (app.lcore_params[lcore].type != e_APP_LCORE_WORKER) {
 203                         continue;
 204                 }
 205
 206                 socket = rte_lcore_to_socket_id(lcore);
 207                 app.lcore_params[lcore].worker.lpm_table = app.lpm_tables[socket];
 208         }
 209 }
 210
 211 static void
 212 app_init_rings_rx(void)
 213 {
 214         unsigned lcore;
 215
 216         /* Initialize the rings for the RX side */
 217         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 218                 struct app_lcore_params_io *lp_io = &app.lcore_params[lcore].io;
 219                 unsigned socket_io, lcore_worker;
 220
 221                 if ((app.lcore_params[lcore].type != e_APP_LCORE_IO) ||
 222                     (lp_io->rx.n_nic_queues == 0)) {
 223                         continue;
 224                 }
 225
 226                 socket_io = rte_lcore_to_socket_id(lcore);
 227
 228                 for (lcore_worker = 0; lcore_worker < APP_MAX_LCORES; lcore_worker ++) {
 229                         char name[32];
 230                         struct app_lcore_params_worker *lp_worker = &app.lcore_params[lcore_worker].worker;
 231                         struct rte_ring *ring = NULL;
 232
 233                         if (app.lcore_params[lcore_worker].type != e_APP_LCORE_WORKER) {
 234                                 continue;
 235                         }
 236
 237                         printf("Creating ring to connect I/O lcore %u (socket %u) with worker lcore %u ...\n",
 238                                 lcore,
 239                                 socket_io,
 240                                 lcore_worker);
 241                         snprintf(name, sizeof(name), "app_ring_rx_s%u_io%u_w%u",
 242                                 socket_io,
 243                                 lcore,
 244                                 lcore_worker);
 245                         ring = rte_ring_create(
 246                                 name,
 247                                 app.ring_rx_size,
 248                                 socket_io,
 249                                 RING_F_SP_ENQ | RING_F_SC_DEQ);
 250                         if (ring == NULL) {
 251                                 rte_panic("Cannot create ring to connect I/O core %u with worker core %u\n",
 252                                         lcore,
 253                                         lcore_worker);
 254                         }
 255
 256                         lp_io->rx.rings[lp_io->rx.n_rings] = ring;
 257                         lp_io->rx.n_rings ++;
 258
 259                         lp_worker->rings_in[lp_worker->n_rings_in] = ring;
 260                         lp_worker->n_rings_in ++;
 261                 }
 262         }
 263
 264         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 265                 struct app_lcore_params_io *lp_io = &app.lcore_params[lcore].io;
 266
 267                 if ((app.lcore_params[lcore].type != e_APP_LCORE_IO) ||
 268                     (lp_io->rx.n_nic_queues == 0)) {
 269                         continue;
 270                 }
 271
 272                 if (lp_io->rx.n_rings != app_get_lcores_worker()) {
 273                         rte_panic("Algorithmic error (I/O RX rings)\n");
 274                 }
 275         }
 276
 277         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 278                 struct app_lcore_params_worker *lp_worker = &app.lcore_params[lcore].worker;
 279
 280                 if (app.lcore_params[lcore].type != e_APP_LCORE_WORKER) {
 281                         continue;
 282                 }
 283
 284                 if (lp_worker->n_rings_in != app_get_lcores_io_rx()) {
 285                         rte_panic("Algorithmic error (worker input rings)\n");
 286                 }
 287         }
 288 }
 289
 290 static void
 291 app_init_rings_tx(void)
 292 {
 293         unsigned lcore;
 294
 295         /* Initialize the rings for the TX side */
 296         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 297                 struct app_lcore_params_worker *lp_worker = &app.lcore_params[lcore].worker;
 298                 unsigned port;
 299
 300                 if (app.lcore_params[lcore].type != e_APP_LCORE_WORKER) {
 301                         continue;
 302                 }
 303
 304                 for (port = 0; port < APP_MAX_NIC_PORTS; port ++) {
 305                         char name[32];
 306                         struct app_lcore_params_io *lp_io = NULL;
 307                         struct rte_ring *ring;
 308                         uint32_t socket_io, lcore_io;
 309
 310                         if (app.nic_tx_port_mask[port] == 0) {
 311                                 continue;
 312                         }
 313
 314                         if (app_get_lcore_for_nic_tx((uint8_t) port, &lcore_io) < 0) {
 315                                 rte_panic("Algorithmic error (no I/O core to handle TX of port %u)\n",
 316                                         port);
 317                         }
 318
 319                         lp_io = &app.lcore_params[lcore_io].io;
 320                         socket_io = rte_lcore_to_socket_id(lcore_io);
 321
 322                         printf("Creating ring to connect worker lcore %u with TX port %u (through I/O lcore %u) (socket %u) ...\n",
 323                                 lcore, port, (unsigned)lcore_io, (unsigned)socket_io);
 324                         snprintf(name, sizeof(name), "app_ring_tx_s%u_w%u_p%u", socket_io, lcore, port);
 325                         ring = rte_ring_create(
 326                                 name,
 327                                 app.ring_tx_size,
 328                                 socket_io,
 329                                 RING_F_SP_ENQ | RING_F_SC_DEQ);
 330                         if (ring == NULL) {
 331                                 rte_panic("Cannot create ring to connect worker core %u with TX port %u\n",
 332                                         lcore,
 333                                         port);
 334                         }
 335
 336                         lp_worker->rings_out[port] = ring;
 337                         lp_io->tx.rings[port][lp_worker->worker_id] = ring;
 338                 }
 339         }
 340
 341         for (lcore = 0; lcore < APP_MAX_LCORES; lcore ++) {
 342                 struct app_lcore_params_io *lp_io = &app.lcore_params[lcore].io;
 343                 unsigned i;
 344
 345                 if ((app.lcore_params[lcore].type != e_APP_LCORE_IO) ||
 346                     (lp_io->tx.n_nic_ports == 0)) {
 347                         continue;
 348                 }
 349
 350                 for (i = 0; i < lp_io->tx.n_nic_ports; i ++){
 351                         unsigned port, j;
 352
 353                         port = lp_io->tx.nic_ports[i];
 354                         for (j = 0; j < app_get_lcores_worker(); j ++) {
 355                                 if (lp_io->tx.rings[port][j] == NULL) {
 356                                         rte_panic("Algorithmic error (I/O TX rings)\n");
 357                                 }
 358                         }
 359                 }
 360         }
 361 }
 362
 363 /* Check the link status of all ports in up to 9s, and print them finally */
 364 static void
 365 check_all_ports_link_status(uint8_t port_num, uint32_t port_mask)
 366 {
 367 #define CHECK_INTERVAL 100 /* 100ms */
 368 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
 369         uint8_t portid, count, all_ports_up, print_flag = 0;
 370         struct rte_eth_link link;
 371         uint32_t n_rx_queues, n_tx_queues;
 372
 373         printf("\nChecking link status");
 374         fflush(stdout);
 375         for (count = 0; count <= MAX_CHECK_TIME; count++) {
 376                 all_ports_up = 1;
 377                 for (portid = 0; portid < port_num; portid++) {
 378                         if ((port_mask & (1 << portid)) == 0)
 379                                 continue;
 380                         n_rx_queues = app_get_nic_rx_queues_per_port(portid);
 381                         n_tx_queues = app.nic_tx_port_mask[portid];
 382                         if ((n_rx_queues == 0) && (n_tx_queues == 0))
 383                                 continue;
 384                         memset(&link, 0, sizeof(link));
 385                         rte_eth_link_get_nowait(portid, &link);
 386                         /* print link status if flag set */
 387                         if (print_flag == 1) {
 388                                 if (link.link_status)
 389                                         printf("Port %d Link Up - speed %u "
 390                                                 "Mbps - %s\n", (uint8_t)portid,
 391                                                 (unsigned)link.link_speed,
 392                                 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
 393                                         ("full-duplex") : ("half-duplex\n"));
 394                                 else
 395                                         printf("Port %d Link Down\n",
 396                                                         (uint8_t)portid);
 397                                 continue;
 398                         }
 399                         /* clear all_ports_up flag if any link down */
 400                         if (link.link_status == 0) {
 401                                 all_ports_up = 0;
 402                                 break;
 403                         }
 404                 }
 405                 /* after finally printing all link status, get out */
 406                 if (print_flag == 1)
 407                         break;
 408
 409                 if (all_ports_up == 0) {
 410                         printf(".");
 411                         fflush(stdout);
 412                         rte_delay_ms(CHECK_INTERVAL);
 413                 }
 414
 415                 /* set the print_flag if all ports up or timeout */
 416                 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
 417                         print_flag = 1;
 418                         printf("done\n");
 419                 }
 420         }
 421 }
 422
 423 static void
 424 app_init_nics(void)
 425 {
 426         unsigned socket;
 427         uint32_t lcore;
 428         uint8_t port, queue;
 429         int ret;
 430         uint32_t n_rx_queues, n_tx_queues;
 431
 432         /* Init NIC ports and queues, then start the ports */
 433         for (port = 0; port < APP_MAX_NIC_PORTS; port ++) {
 434                 struct rte_mempool *pool;
 435
 436                 n_rx_queues = app_get_nic_rx_queues_per_port(port);
 437                 n_tx_queues = app.nic_tx_port_mask[port];
 438
 439                 if ((n_rx_queues == 0) && (n_tx_queues == 0)) {
 440                         continue;
 441                 }
 442
 443                 /* Init port */
 444                 printf("Initializing NIC port %u ...\n", (unsigned) port);
 445                 ret = rte_eth_dev_configure(
 446                         port,
 447                         (uint8_t) n_rx_queues,
 448                         (uint8_t) n_tx_queues,
 449                         &port_conf);
 450                 if (ret < 0) {
 451                         rte_panic("Cannot init NIC port %u (%d)\n", (unsigned) port, ret);
 452                 }
 453                 rte_eth_promiscuous_enable(port);
 454
 455                 /* Init RX queues */
 456                 for (queue = 0; queue < APP_MAX_RX_QUEUES_PER_NIC_PORT; queue ++) {
 457                         if (app.nic_rx_queue_mask[port][queue] == 0) {
 458                                 continue;
 459                         }
 460
 461                         app_get_lcore_for_nic_rx(port, queue, &lcore);
 462                         socket = rte_lcore_to_socket_id(lcore);
 463                         pool = app.lcore_params[lcore].pool;
 464
 465                         printf("Initializing NIC port %u RX queue %u ...\n",
 466                                 (unsigned) port,
 467                                 (unsigned) queue);
 468                         ret = rte_eth_rx_queue_setup(
 469                                 port,
 470                                 queue,
 471                                 (uint16_t) app.nic_rx_ring_size,
 472                                 socket,
 473                                 NULL,
 474                                 pool);
 475                         if (ret < 0) {
 476                                 rte_panic("Cannot init RX queue %u for port %u (%d)\n",
 477                                         (unsigned) queue,
 478                                         (unsigned) port,
 479                                         ret);
 480                         }
 481                 }
 482
 483                 /* Init TX queues */
 484                 if (app.nic_tx_port_mask[port] == 1) {
 485                         app_get_lcore_for_nic_tx(port, &lcore);
 486                         socket = rte_lcore_to_socket_id(lcore);
 487                         printf("Initializing NIC port %u TX queue 0 ...\n",
 488                                 (unsigned) port);
 489                         ret = rte_eth_tx_queue_setup(
 490                                 port,
 491                                 0,
 492                                 (uint16_t) app.nic_tx_ring_size,
 493                                 socket,
 494                                 NULL);
 495                         if (ret < 0) {
 496                                 rte_panic("Cannot init TX queue 0 for port %d (%d)\n",
 497                                         port,
 498                                         ret);
 499                         }
 500                 }
 501
 502                 /* Start port */
 503                 ret = rte_eth_dev_start(port);
 504                 if (ret < 0) {
 505                         rte_panic("Cannot start port %d (%d)\n", port, ret);
 506                 }
 507         }
 508
 509         check_all_ports_link_status(APP_MAX_NIC_PORTS, (~0x0));
 510 }
 511
 512 void
 513 app_init(void)
 514 {
 515         app_assign_worker_ids();
 516         app_init_mbuf_pools();
 517         app_init_lpm_tables();
 518         app_init_rings_rx();
 519         app_init_rings_tx();
 520         app_init_nics();
 521
 522         printf("Initialization completed.\n");
 523 }