lib/librte_eal/bsdapp/eal/eal.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
   5  *   Copyright(c) 2014 6WIND S.A.
   6  *   All rights reserved.
   7  *
   8  *   Redistribution and use in source and binary forms, with or without
   9  *   modification, are permitted provided that the following conditions
  10  *   are met:
  11  *
  12  *     * Redistributions of source code must retain the above copyright
  13  *       notice, this list of conditions and the following disclaimer.
  14  *     * Redistributions in binary form must reproduce the above copyright
  15  *       notice, this list of conditions and the following disclaimer in
  16  *       the documentation and/or other materials provided with the
  17  *       distribution.
  18  *     * Neither the name of Intel Corporation nor the names of its
  19  *       contributors may be used to endorse or promote products derived
  20  *       from this software without specific prior written permission.
  21  *
  22  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  23  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  24  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  25  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  26  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  27  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  28  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  29  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  30  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  31  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  32  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  33  */
  34
  35 #include <stdio.h>
  36 #include <stdlib.h>
  37 #include <stdint.h>
  38 #include <string.h>
  39 #include <stdarg.h>
  40 #include <unistd.h>
  41 #include <pthread.h>
  42 #include <syslog.h>
  43 #include <getopt.h>
  44 #include <sys/file.h>
  45 #include <stddef.h>
  46 #include <errno.h>
  47 #include <limits.h>
  48 #include <errno.h>
  49 #include <sys/mman.h>
  50 #include <sys/queue.h>
  51
  52 #include <rte_common.h>
  53 #include <rte_debug.h>
  54 #include <rte_memory.h>
  55 #include <rte_memzone.h>
  56 #include <rte_launch.h>
  57 #include <rte_tailq.h>
  58 #include <rte_eal.h>
  59 #include <rte_eal_memconfig.h>
  60 #include <rte_per_lcore.h>
  61 #include <rte_lcore.h>
  62 #include <rte_log.h>
  63 #include <rte_random.h>
  64 #include <rte_cycles.h>
  65 #include <rte_string_fns.h>
  66 #include <rte_cpuflags.h>
  67 #include <rte_interrupts.h>
  68 #include <rte_pci.h>
  69 #include <rte_devargs.h>
  70 #include <rte_common.h>
  71 #include <rte_version.h>
  72 #include <rte_atomic.h>
  73 #include <malloc_heap.h>
  74 #include <rte_eth_ring.h>
  75
  76 #include "eal_private.h"
  77 #include "eal_thread.h"
  78 #include "eal_internal_cfg.h"
  79 #include "eal_filesystem.h"
  80 #include "eal_hugepages.h"
  81
  82 #define OPT_HUGE_DIR    "huge-dir"
  83 #define OPT_PROC_TYPE   "proc-type"
  84 #define OPT_NO_SHCONF   "no-shconf"
  85 #define OPT_NO_HPET     "no-hpet"
  86 #define OPT_VMWARE_TSC_MAP   "vmware-tsc-map"
  87 #define OPT_NO_PCI      "no-pci"
  88 #define OPT_NO_HUGE     "no-huge"
  89 #define OPT_FILE_PREFIX "file-prefix"
  90 #define OPT_SOCKET_MEM  "socket-mem"
  91 #define OPT_USE_DEVICE "use-device"
  92 #define OPT_PCI_WHITELIST "pci-whitelist"
  93 #define OPT_PCI_BLACKLIST "pci-blacklist"
  94 #define OPT_VDEV        "vdev"
  95 #define OPT_SYSLOG      "syslog"
  96
  97 #define RTE_EAL_BLACKLIST_SIZE  0x100
  98
  99 #define MEMSIZE_IF_NO_HUGE_PAGE (64ULL * 1024ULL * 1024ULL)
 100
 101 #define SOCKET_MEM_STRLEN (RTE_MAX_NUMA_NODES * 10)
 102
 103 #define HIGHEST_RPL 3
 104
 105 #define BITS_PER_HEX 4
 106
 107 #define GET_BLACKLIST_FIELD(in, fd, lim, dlm)                   \
 108 {                                                               \
 109         unsigned long val;                                      \
 110         char *end;                                              \
 111         errno = 0;                                              \
 112         val = strtoul((in), &end, 16);                          \
 113         if (errno != 0 || end[0] != (dlm) || val > (lim))       \
 114                 return (-EINVAL);                               \
 115         (fd) = (typeof (fd))val;                                \
 116         (in) = end + 1;                                         \
 117 }
 118
 119 /* Allow the application to print its usage message too if set */
 120 static rte_usage_hook_t rte_application_usage_hook = NULL;
 121 /* early configuration structure, when memory config is not mmapped */
 122 static struct rte_mem_config early_mem_config;
 123
 124 /* define fd variable here, because file needs to be kept open for the
 125  * duration of the program, as we hold a write lock on it in the primary proc */
 126 static int mem_cfg_fd = -1;
 127
 128 static struct flock wr_lock = {
 129                 .l_type = F_WRLCK,
 130                 .l_whence = SEEK_SET,
 131                 .l_start = offsetof(struct rte_mem_config, memseg),
 132                 .l_len = sizeof(early_mem_config.memseg),
 133 };
 134
 135 /* Address of global and public configuration */
 136 static struct rte_config rte_config = {
 137                 .mem_config = &early_mem_config,
 138 };
 139
 140 /* internal configuration (per-core) */
 141 struct lcore_config lcore_config[RTE_MAX_LCORE];
 142
 143 /* internal configuration */
 144 struct internal_config internal_config;
 145
 146 /* used by rte_rdtsc() */
 147 int rte_cycles_vmware_tsc_map;
 148
 149 /* Return a pointer to the configuration structure */
 150 struct rte_config *
 151 rte_eal_get_configuration(void)
 152 {
 153         return &rte_config;
 154 }
 155
 156 /* parse a sysfs (or other) file containing one integer value */
 157 int
 158 eal_parse_sysfs_value(const char *filename, unsigned long *val)
 159 {
 160         FILE *f;
 161         char buf[BUFSIZ];
 162         char *end = NULL;
 163
 164         if ((f = fopen(filename, "r")) == NULL) {
 165                 RTE_LOG(ERR, EAL, "%s(): cannot open sysfs value %s\n",
 166                         __func__, filename);
 167                 return -1;
 168         }
 169
 170         if (fgets(buf, sizeof(buf), f) == NULL) {
 171                 RTE_LOG(ERR, EAL, "%s(): cannot read sysfs value %s\n",
 172                         __func__, filename);
 173                 fclose(f);
 174                 return -1;
 175         }
 176         *val = strtoul(buf, &end, 0);
 177         if ((buf[0] == '\0') || (end == NULL) || (*end != '\n')) {
 178                 RTE_LOG(ERR, EAL, "%s(): cannot parse sysfs value %s\n",
 179                                 __func__, filename);
 180                 fclose(f);
 181                 return -1;
 182         }
 183         fclose(f);
 184         return 0;
 185 }
 186
 187
 188 /* create memory configuration in shared/mmap memory. Take out
 189  * a write lock on the memsegs, so we can auto-detect primary/secondary.
 190  * This means we never close the file while running (auto-close on exit).
 191  * We also don't lock the whole file, so that in future we can use read-locks
 192  * on other parts, e.g. memzones, to detect if there are running secondary
 193  * processes. */
 194 static void
 195 rte_eal_config_create(void)
 196 {
 197         void *rte_mem_cfg_addr;
 198         int retval;
 199
 200         const char *pathname = eal_runtime_config_path();
 201
 202         if (internal_config.no_shconf)
 203                 return;
 204
 205         if (mem_cfg_fd < 0){
 206                 mem_cfg_fd = open(pathname, O_RDWR | O_CREAT, 0660);
 207                 if (mem_cfg_fd < 0)
 208                         rte_panic("Cannot open '%s' for rte_mem_config\n", pathname);
 209         }
 210
 211         retval = ftruncate(mem_cfg_fd, sizeof(*rte_config.mem_config));
 212         if (retval < 0){
 213                 close(mem_cfg_fd);
 214                 rte_panic("Cannot resize '%s' for rte_mem_config\n", pathname);
 215         }
 216
 217         retval = fcntl(mem_cfg_fd, F_SETLK, &wr_lock);
 218         if (retval < 0){
 219                 close(mem_cfg_fd);
 220                 rte_exit(EXIT_FAILURE, "Cannot create lock on '%s'. Is another primary "
 221                                 "process running?\n", pathname);
 222         }
 223
 224         rte_mem_cfg_addr = mmap(NULL, sizeof(*rte_config.mem_config),
 225                                 PROT_READ | PROT_WRITE, MAP_SHARED, mem_cfg_fd, 0);
 226
 227         if (rte_mem_cfg_addr == MAP_FAILED){
 228                 rte_panic("Cannot mmap memory for rte_config\n");
 229         }
 230         memcpy(rte_mem_cfg_addr, &early_mem_config, sizeof(early_mem_config));
 231         rte_config.mem_config = (struct rte_mem_config *) rte_mem_cfg_addr;
 232 }
 233
 234 /* attach to an existing shared memory config */
 235 static void
 236 rte_eal_config_attach(void)
 237 {
 238         void *rte_mem_cfg_addr;
 239         const char *pathname = eal_runtime_config_path();
 240
 241         if (internal_config.no_shconf)
 242                 return;
 243
 244         if (mem_cfg_fd < 0){
 245                 mem_cfg_fd = open(pathname, O_RDWR);
 246                 if (mem_cfg_fd < 0)
 247                         rte_panic("Cannot open '%s' for rte_mem_config\n", pathname);
 248         }
 249
 250         rte_mem_cfg_addr = mmap(NULL, sizeof(*rte_config.mem_config),
 251                                 PROT_READ | PROT_WRITE, MAP_SHARED, mem_cfg_fd, 0);
 252         close(mem_cfg_fd);
 253         if (rte_mem_cfg_addr == MAP_FAILED)
 254                 rte_panic("Cannot mmap memory for rte_config\n");
 255
 256         rte_config.mem_config = (struct rte_mem_config *) rte_mem_cfg_addr;
 257 }
 258
 259 /* Detect if we are a primary or a secondary process */
 260 static enum rte_proc_type_t
 261 eal_proc_type_detect(void)
 262 {
 263         enum rte_proc_type_t ptype = RTE_PROC_PRIMARY;
 264         const char *pathname = eal_runtime_config_path();
 265
 266         /* if we can open the file but not get a write-lock we are a secondary
 267          * process. NOTE: if we get a file handle back, we keep that open
 268          * and don't close it to prevent a race condition between multiple opens */
 269         if (((mem_cfg_fd = open(pathname, O_RDWR)) >= 0) &&
 270                         (fcntl(mem_cfg_fd, F_SETLK, &wr_lock) < 0))
 271                 ptype = RTE_PROC_SECONDARY;
 272
 273         RTE_LOG(INFO, EAL, "Auto-detected process type: %s\n",
 274                         ptype == RTE_PROC_PRIMARY ? "PRIMARY" : "SECONDARY");
 275
 276         return ptype;
 277 }
 278
 279 /* Sets up rte_config structure with the pointer to shared memory config.*/
 280 static void
 281 rte_config_init(void)
 282 {
 283         /* set the magic in configuration structure */
 284         rte_config.magic = RTE_MAGIC;
 285         rte_config.process_type = (internal_config.process_type == RTE_PROC_AUTO) ?
 286                         eal_proc_type_detect() : /* for auto, detect the type */
 287                         internal_config.process_type; /* otherwise use what's already set */
 288
 289         switch (rte_config.process_type){
 290         case RTE_PROC_PRIMARY:
 291                 rte_eal_config_create();
 292                 break;
 293         case RTE_PROC_SECONDARY:
 294                 rte_eal_config_attach();
 295                 rte_eal_mcfg_wait_complete(rte_config.mem_config);
 296                 break;
 297         case RTE_PROC_AUTO:
 298         case RTE_PROC_INVALID:
 299                 rte_panic("Invalid process type\n");
 300         }
 301 }
 302
 303 /* display usage */
 304 static void
 305 eal_usage(const char *prgname)
 306 {
 307         printf("\nUsage: %s -c COREMASK -n NUM [-m NB] [-r NUM] [-b <domain:bus:devid.func>]"
 308                "[--proc-type primary|secondary|auto] \n\n"
 309                "EAL options:\n"
 310                "  -c COREMASK  : A hexadecimal bitmask of cores to run on\n"
 311                "  -n NUM       : Number of memory channels\n"
 312                    "  -v           : Display version information on startup\n"
 313                "                 (multiple -b options are allowed)\n"
 314                "  -m MB        : memory to allocate\n"
 315                "  -r NUM       : force number of memory ranks (don't detect)\n"
 316                "  --"OPT_PROC_TYPE"  : type of this process\n"
 317                "  --"OPT_PCI_BLACKLIST", -b: add a PCI device in black list.\n"
 318                "               Prevent EAL from using this PCI device. The argument\n"
 319                "               format is <domain:bus:devid.func>.\n"
 320                "  --"OPT_PCI_WHITELIST", -w: add a PCI device in white list.\n"
 321                "               Only use the specified PCI devices. The argument format\n"
 322                "               is <[domain:]bus:devid.func>. This option can be present\n"
 323                "               several times (once per device).\n"
 324                "               [NOTE: PCI whitelist cannot be used with -b option]\n"
 325                "  --"OPT_VDEV": add a virtual device.\n"
 326                "               The argument format is <driver><id>[,key=val,...]\n"
 327                "               (ex: --vdev=eth_pcap0,iface=eth2).\n"
 328                "  --"OPT_VMWARE_TSC_MAP": use VMware TSC map instead of "
 329                            "native RDTSC\n"
 330                "\nEAL options for DEBUG use only:\n"
 331                "  --"OPT_NO_HUGE"  : use malloc instead of hugetlbfs\n"
 332                "  --"OPT_NO_PCI"   : disable pci\n"
 333                "  --"OPT_NO_SHCONF": no shared config (mmap'd files)\n"
 334                "\n",
 335                prgname);
 336         /* Allow the application to print its usage message too if hook is set */
 337         if ( rte_application_usage_hook ) {
 338                 printf("===== Application Usage =====\n\n");
 339                 rte_application_usage_hook(prgname);
 340         }
 341 }
 342
 343 /* Set a per-application usage message */
 344 rte_usage_hook_t
 345 rte_set_application_usage_hook( rte_usage_hook_t usage_func )
 346 {
 347         rte_usage_hook_t        old_func;
 348
 349         /* Will be NULL on the first call to denote the last usage routine. */
 350         old_func                                        = rte_application_usage_hook;
 351         rte_application_usage_hook      = usage_func;
 352
 353         return old_func;
 354 }
 355
 356 /*
 357  * Parse the coremask given as argument (hexadecimal string) and fill
 358  * the global configuration (core role and core count) with the parsed
 359  * value.
 360  */
 361 static int xdigit2val(unsigned char c)
 362 {
 363         int val;
 364         if(isdigit(c))
 365                 val = c - '0';
 366         else if(isupper(c))
 367                 val = c - 'A' + 10;
 368         else
 369                 val = c - 'a' + 10;
 370         return val;
 371 }
 372 static int
 373 eal_parse_coremask(const char *coremask)
 374 {
 375         struct rte_config *cfg = rte_eal_get_configuration();
 376         int i, j, idx = 0 ;
 377         unsigned count = 0;
 378         char c;
 379         int val;
 380
 381         if (coremask == NULL)
 382                 return -1;
 383         /* Remove all blank characters ahead and after .
 384          * Remove 0x/0X if exists.
 385          */
 386         while (isblank(*coremask))
 387                 coremask++;
 388         if (coremask[0] == '0' && ((coremask[1] == 'x')
 389                 ||  (coremask[1] == 'X')) )
 390                 coremask += 2;
 391         i = strnlen(coremask, sysconf(_SC_ARG_MAX));
 392         while ((i > 0) && isblank(coremask[i - 1]))
 393                 i--;
 394         if (i == 0)
 395                 return -1;
 396
 397         for (i = i - 1; i >= 0 && idx < RTE_MAX_LCORE; i--) {
 398                 c = coremask[i];
 399                 if (isxdigit(c) == 0) {
 400                         /* invalid characters */
 401                         return (-1);
 402                 }
 403                 val = xdigit2val(c);
 404                 for(j = 0; j < BITS_PER_HEX && idx < RTE_MAX_LCORE; j++, idx++) {
 405                         if((1 << j) & val) {
 406                                 cfg->lcore_role[idx] = ROLE_RTE;
 407                                 if(count == 0)
 408                                         cfg->master_lcore = idx;
 409                                 count++;
 410                         } else  {
 411                                 cfg->lcore_role[idx] = ROLE_OFF;
 412                         }
 413                 }
 414         }
 415         for(; i >= 0; i--)
 416                 if(coremask[i] != '0')
 417                         return -1;
 418         for(; idx < RTE_MAX_LCORE; idx++)
 419                 cfg->lcore_role[idx] = ROLE_OFF;
 420         if(count == 0)
 421                 return -1;
 422         return 0;
 423 }
 424
 425 static int
 426 eal_parse_syslog(const char *facility)
 427 {
 428         int i;
 429         static struct {
 430                 const char *name;
 431                 int value;
 432         } map[] = {
 433                 { "auth", LOG_AUTH },
 434                 { "cron", LOG_CRON },
 435                 { "daemon", LOG_DAEMON },
 436                 { "ftp", LOG_FTP },
 437                 { "kern", LOG_KERN },
 438                 { "lpr", LOG_LPR },
 439                 { "mail", LOG_MAIL },
 440                 { "news", LOG_NEWS },
 441                 { "syslog", LOG_SYSLOG },
 442                 { "user", LOG_USER },
 443                 { "uucp", LOG_UUCP },
 444                 { "local0", LOG_LOCAL0 },
 445                 { "local1", LOG_LOCAL1 },
 446                 { "local2", LOG_LOCAL2 },
 447                 { "local3", LOG_LOCAL3 },
 448                 { "local4", LOG_LOCAL4 },
 449                 { "local5", LOG_LOCAL5 },
 450                 { "local6", LOG_LOCAL6 },
 451                 { "local7", LOG_LOCAL7 },
 452                 { NULL, 0 }
 453         };
 454
 455         for (i = 0; map[i].name; i++) {
 456                 if (!strcmp(facility, map[i].name)) {
 457                         internal_config.syslog_facility = map[i].value;
 458                         return 0;
 459                 }
 460         }
 461         return -1;
 462 }
 463
 464 static inline size_t
 465 eal_get_hugepage_mem_size(void)
 466 {
 467         uint64_t size = 0;
 468         unsigned i, j;
 469
 470         for (i = 0; i < internal_config.num_hugepage_sizes; i++) {
 471                 struct hugepage_info *hpi = &internal_config.hugepage_info[i];
 472                 if (hpi->hugedir != NULL) {
 473                         for (j = 0; j < RTE_MAX_NUMA_NODES; j++) {
 474                                 size += hpi->hugepage_sz * hpi->num_pages[j];
 475                         }
 476                 }
 477         }
 478
 479         return (size < SIZE_MAX) ? (size_t)(size) : SIZE_MAX;
 480 }
 481
 482 static enum rte_proc_type_t
 483 eal_parse_proc_type(const char *arg)
 484 {
 485         if (strncasecmp(arg, "primary", sizeof("primary")) == 0)
 486                 return RTE_PROC_PRIMARY;
 487         if (strncasecmp(arg, "secondary", sizeof("secondary")) == 0)
 488                 return RTE_PROC_SECONDARY;
 489         if (strncasecmp(arg, "auto", sizeof("auto")) == 0)
 490                 return RTE_PROC_AUTO;
 491
 492         return RTE_PROC_INVALID;
 493 }
 494
 495 /* Parse the argument given in the command line of the application */
 496 static int
 497 eal_parse_args(int argc, char **argv)
 498 {
 499         int opt, ret, i;
 500         char **argvopt;
 501         int option_index;
 502         int coremask_ok = 0;
 503         char *prgname = argv[0];
 504         static struct option lgopts[] = {
 505                 {OPT_NO_HUGE, 0, 0, 0},
 506                 {OPT_NO_PCI, 0, 0, 0},
 507                 {OPT_NO_HPET, 0, 0, 0},
 508                 {OPT_VMWARE_TSC_MAP, 0, 0, 0},
 509                 {OPT_HUGE_DIR, 1, 0, 0},
 510                 {OPT_NO_SHCONF, 0, 0, 0},
 511                 {OPT_PROC_TYPE, 1, 0, 0},
 512                 {OPT_FILE_PREFIX, 1, 0, 0},
 513                 {OPT_SOCKET_MEM, 1, 0, 0},
 514                 {OPT_PCI_WHITELIST, 1, 0, 0},
 515                 {OPT_PCI_BLACKLIST, 1, 0, 0},
 516                 {OPT_VDEV, 1, 0, 0},
 517                 {OPT_SYSLOG, 1, NULL, 0},
 518                 {0, 0, 0, 0}
 519         };
 520
 521         argvopt = argv;
 522
 523         internal_config.memory = 0;
 524         internal_config.force_nrank = 0;
 525         internal_config.force_nchannel = 0;
 526         internal_config.hugefile_prefix = HUGEFILE_PREFIX_DEFAULT;
 527         internal_config.hugepage_dir = NULL;
 528         internal_config.force_sockets = 0;
 529         internal_config.syslog_facility = LOG_DAEMON;
 530 #ifdef RTE_LIBEAL_USE_HPET
 531         internal_config.no_hpet = 0;
 532 #else
 533         internal_config.no_hpet = 1;
 534 #endif
 535         /* zero out the NUMA config */
 536         for (i = 0; i < RTE_MAX_NUMA_NODES; i++)
 537                 internal_config.socket_mem[i] = 0;
 538
 539         /* zero out hugedir descriptors */
 540         for (i = 0; i < MAX_HUGEPAGE_SIZES; i++)
 541                 internal_config.hugepage_info[i].lock_descriptor = 0;
 542
 543         internal_config.vmware_tsc_map = 0;
 544
 545         while ((opt = getopt_long(argc, argvopt, "b:w:c:m:n:r:v",
 546                                   lgopts, &option_index)) != EOF) {
 547
 548                 switch (opt) {
 549                 /* blacklist */
 550                 case 'b':
 551                         if (rte_eal_devargs_add(RTE_DEVTYPE_BLACKLISTED_PCI,
 552                                         optarg) < 0) {
 553                                 eal_usage(prgname);
 554                                 return (-1);
 555                         }
 556                         break;
 557                 /* whitelist */
 558                 case 'w':
 559                         if (rte_eal_devargs_add(RTE_DEVTYPE_WHITELISTED_PCI,
 560                                         optarg) < 0) {
 561                                 eal_usage(prgname);
 562                                 return -1;
 563                         }
 564                         break;
 565                 /* coremask */
 566                 case 'c':
 567                         if (eal_parse_coremask(optarg) < 0) {
 568                                 RTE_LOG(ERR, EAL, "invalid coremask\n");
 569                                 eal_usage(prgname);
 570                                 return -1;
 571                         }
 572                         coremask_ok = 1;
 573                         break;
 574                 /* size of memory */
 575                 case 'm':
 576                         internal_config.memory = atoi(optarg);
 577                         internal_config.memory *= 1024ULL;
 578                         internal_config.memory *= 1024ULL;
 579                         break;
 580                 /* force number of channels */
 581                 case 'n':
 582                         internal_config.force_nchannel = atoi(optarg);
 583                         if (internal_config.force_nchannel == 0 ||
 584                             internal_config.force_nchannel > 4) {
 585                                 RTE_LOG(ERR, EAL, "invalid channel number\n");
 586                                 eal_usage(prgname);
 587                                 return -1;
 588                         }
 589                         break;
 590                 /* force number of ranks */
 591                 case 'r':
 592                         internal_config.force_nrank = atoi(optarg);
 593                         if (internal_config.force_nrank == 0 ||
 594                             internal_config.force_nrank > 16) {
 595                                 RTE_LOG(ERR, EAL, "invalid rank number\n");
 596                                 eal_usage(prgname);
 597                                 return -1;
 598                         }
 599                         break;
 600                 case 'v':
 601                         /* since message is explicitly requested by user, we
 602                          * write message at highest log level so it can always be seen
 603                          * even if info or warning messages are disabled */
 604                         RTE_LOG(CRIT, EAL, "RTE Version: '%s'\n", rte_version());
 605                         break;
 606
 607                 /* long options */
 608                 case 0:
 609                         if (!strcmp(lgopts[option_index].name, OPT_NO_HUGE)) {
 610                                 internal_config.no_hugetlbfs = 1;
 611                         }
 612                         else if (!strcmp(lgopts[option_index].name, OPT_NO_PCI)) {
 613                                 internal_config.no_pci = 1;
 614                         }
 615                         else if (!strcmp(lgopts[option_index].name, OPT_NO_HPET)) {
 616                                 internal_config.no_hpet = 1;
 617                         }
 618                         else if (!strcmp(lgopts[option_index].name, OPT_VMWARE_TSC_MAP)) {
 619                                 internal_config.vmware_tsc_map = 1;
 620                         }
 621                         else if (!strcmp(lgopts[option_index].name, OPT_NO_SHCONF)) {
 622                                 internal_config.no_shconf = 1;
 623                         }
 624                         else if (!strcmp(lgopts[option_index].name, OPT_HUGE_DIR)) {
 625                                 RTE_LOG(ERR, EAL, "Option "OPT_HUGE_DIR" is not supported on"
 626                                                 "FreeBSD\n");
 627                                 return -1;
 628                         }
 629                         else if (!strcmp(lgopts[option_index].name, OPT_PROC_TYPE)) {
 630                                 internal_config.process_type = eal_parse_proc_type(optarg);
 631                         }
 632                         else if (!strcmp(lgopts[option_index].name, OPT_FILE_PREFIX)) {
 633                                 RTE_LOG(ERR, EAL, "Option "OPT_FILE_PREFIX" is not supported on"
 634                                                 "FreeBSD\n");
 635                                 return -1;
 636                         }
 637                         else if (!strcmp(lgopts[option_index].name, OPT_SOCKET_MEM)) {
 638                                 RTE_LOG(ERR, EAL, "Option "OPT_SOCKET_MEM" is not supported on"
 639                                                 "FreeBSD\n");
 640                                 return -1;
 641                         }
 642                         else if (!strcmp(lgopts[option_index].name, OPT_USE_DEVICE)) {
 643                                 printf("The --use-device option is deprecated, please use\n"
 644                                         "--whitelist or --vdev instead.\n");
 645                                 eal_usage(prgname);
 646                                 return -1;
 647                         }
 648                         else if (!strcmp(lgopts[option_index].name, OPT_PCI_BLACKLIST)) {
 649                                 if (rte_eal_devargs_add(RTE_DEVTYPE_BLACKLISTED_PCI,
 650                                                 optarg) < 0) {
 651                                         eal_usage(prgname);
 652                                         return -1;
 653                                 }
 654                         }
 655                         else if (!strcmp(lgopts[option_index].name, OPT_PCI_WHITELIST)) {
 656                                 if (rte_eal_devargs_add(RTE_DEVTYPE_WHITELISTED_PCI,
 657                                                 optarg) < 0) {
 658                                         eal_usage(prgname);
 659                                         return -1;
 660                                 }
 661                         }
 662                         else if (!strcmp(lgopts[option_index].name, OPT_VDEV)) {
 663                                 if (rte_eal_devargs_add(RTE_DEVTYPE_VIRTUAL,
 664                                                 optarg) < 0) {
 665                                         eal_usage(prgname);
 666                                         return -1;
 667                                 }
 668                         }
 669                         else if (!strcmp(lgopts[option_index].name, OPT_SYSLOG)) {
 670                                 if (eal_parse_syslog(optarg) < 0) {
 671                                         RTE_LOG(ERR, EAL, "invalid parameters for --"
 672                                                         OPT_SYSLOG "\n");
 673                                         eal_usage(prgname);
 674                                         return -1;
 675                                 }
 676                         }
 677                         break;
 678
 679                 default:
 680                         eal_usage(prgname);
 681                         return -1;
 682                 }
 683         }
 684
 685         /* sanity checks */
 686         if (!coremask_ok) {
 687                 RTE_LOG(ERR, EAL, "coremask not specified\n");
 688                 eal_usage(prgname);
 689                 return -1;
 690         }
 691         if (internal_config.process_type == RTE_PROC_AUTO){
 692                 internal_config.process_type = eal_proc_type_detect();
 693         }
 694         if (internal_config.process_type == RTE_PROC_INVALID){
 695                 RTE_LOG(ERR, EAL, "Invalid process type specified\n");
 696                 eal_usage(prgname);
 697                 return -1;
 698         }
 699         if (internal_config.process_type == RTE_PROC_PRIMARY &&
 700                         internal_config.force_nchannel == 0) {
 701                 RTE_LOG(ERR, EAL, "Number of memory channels (-n) not specified\n");
 702                 eal_usage(prgname);
 703                 return -1;
 704         }
 705         if (index(internal_config.hugefile_prefix,'%') != NULL){
 706                 RTE_LOG(ERR, EAL, "Invalid char, '%%', in '"OPT_FILE_PREFIX"' option\n");
 707                 eal_usage(prgname);
 708                 return -1;
 709         }
 710         if (internal_config.memory > 0 && internal_config.force_sockets == 1) {
 711                 RTE_LOG(ERR, EAL, "Options -m and --socket-mem cannot be specified "
 712                                 "at the same time\n");
 713                 eal_usage(prgname);
 714                 return -1;
 715         }
 716         /* --no-huge doesn't make sense with either -m or --socket-mem */
 717         if (internal_config.no_hugetlbfs &&
 718                         (internal_config.memory > 0 ||
 719                                         internal_config.force_sockets == 1)) {
 720                 RTE_LOG(ERR, EAL, "Options -m or --socket-mem cannot be specified "
 721                                 "together with --no-huge!\n");
 722                 eal_usage(prgname);
 723                 return -1;
 724         }
 725
 726         if (rte_eal_devargs_type_count(RTE_DEVTYPE_WHITELISTED_PCI) != 0 &&
 727                 rte_eal_devargs_type_count(RTE_DEVTYPE_BLACKLISTED_PCI) != 0) {
 728                 RTE_LOG(ERR, EAL, "Error: blacklist [-b] and whitelist "
 729                         "[-w] options cannot be used at the same time\n");
 730                 eal_usage(prgname);
 731                 return -1;
 732         }
 733
 734         if (optind >= 0)
 735                 argv[optind-1] = prgname;
 736
 737         /* if no memory amounts were requested, this will result in 0 and
 738          * will be overriden later, right after eal_hugepage_info_init() */
 739         for (i = 0; i < RTE_MAX_NUMA_NODES; i++)
 740                 internal_config.memory += internal_config.socket_mem[i];
 741
 742         ret = optind-1;
 743         optind = 0; /* reset getopt lib */
 744         return ret;
 745 }
 746
 747 static void
 748 eal_check_mem_on_local_socket(void)
 749 {
 750         const struct rte_memseg *ms;
 751         int i, socket_id;
 752
 753         socket_id = rte_lcore_to_socket_id(rte_config.master_lcore);
 754
 755         ms = rte_eal_get_physmem_layout();
 756
 757         for (i = 0; i < RTE_MAX_MEMSEG; i++)
 758                 if (ms[i].socket_id == socket_id &&
 759                                 ms[i].len > 0)
 760                         return;
 761
 762         RTE_LOG(WARNING, EAL, "WARNING: Master core has no "
 763                         "memory on local socket!\n");
 764 }
 765
 766 static int
 767 sync_func(__attribute__((unused)) void *arg)
 768 {
 769         return 0;
 770 }
 771
 772 inline static void
 773 rte_eal_mcfg_complete(void)
 774 {
 775         /* ALL shared mem_config related INIT DONE */
 776         if (rte_config.process_type == RTE_PROC_PRIMARY)
 777                 rte_config.mem_config->magic = RTE_MAGIC;
 778 }
 779
 780 /* return non-zero if hugepages are enabled. */
 781 int rte_eal_has_hugepages(void)
 782 {
 783         return !internal_config.no_hugetlbfs;
 784 }
 785
 786 /* Abstraction for port I/0 privilage */
 787 static int
 788 rte_eal_iopl_init(void)
 789 {
 790         int fd = -1;
 791         fd = open("/dev/io", O_RDWR);
 792         if (fd < 0)
 793                 return -1;
 794         return 0;
 795 }
 796
 797 /* Launch threads, called at application init(). */
 798 int
 799 rte_eal_init(int argc, char **argv)
 800 {
 801         int i, fctret, ret;
 802         pthread_t thread_id;
 803         static rte_atomic32_t run_once = RTE_ATOMIC32_INIT(0);
 804
 805         if (!rte_atomic32_test_and_set(&run_once))
 806                 return -1;
 807
 808         thread_id = pthread_self();
 809
 810         if (rte_eal_log_early_init() < 0)
 811                 rte_panic("Cannot init early logs\n");
 812
 813         fctret = eal_parse_args(argc, argv);
 814         if (fctret < 0)
 815                 exit(1);
 816
 817         if (internal_config.no_hugetlbfs == 0 &&
 818                         internal_config.process_type != RTE_PROC_SECONDARY &&
 819                         eal_hugepage_info_init() < 0)
 820                 rte_panic("Cannot get hugepage information\n");
 821
 822         if (internal_config.memory == 0 && internal_config.force_sockets == 0) {
 823                 if (internal_config.no_hugetlbfs)
 824                         internal_config.memory = MEMSIZE_IF_NO_HUGE_PAGE;
 825                 else
 826                         internal_config.memory = eal_get_hugepage_mem_size();
 827         }
 828
 829         if (internal_config.vmware_tsc_map == 1) {
 830 #ifdef RTE_LIBRTE_EAL_VMWARE_TSC_MAP_SUPPORT
 831                 rte_cycles_vmware_tsc_map = 1;
 832                 RTE_LOG (DEBUG, EAL, "Using VMWARE TSC MAP, "
 833                                 "you must have monitor_control.pseudo_perfctr = TRUE\n");
 834 #else
 835                 RTE_LOG (WARNING, EAL, "Ignoring --vmware-tsc-map because "
 836                                 "RTE_LIBRTE_EAL_VMWARE_TSC_MAP_SUPPORT is not set\n");
 837 #endif
 838         }
 839
 840         rte_srand(rte_rdtsc());
 841
 842         rte_config_init();
 843
 844         if (rte_eal_iopl_init() == 0)
 845                 rte_config.flags |= EAL_FLG_HIGH_IOPL;
 846
 847         if (rte_eal_cpu_init() < 0)
 848                 rte_panic("Cannot detect lcores\n");
 849
 850         if (rte_eal_memory_init() < 0)
 851                 rte_panic("Cannot init memory\n");
 852
 853         if (rte_eal_memzone_init() < 0)
 854                 rte_panic("Cannot init memzone\n");
 855
 856         if (rte_eal_tailqs_init() < 0)
 857                 rte_panic("Cannot init tail queues for objects\n");
 858
 859 /*      if (rte_eal_log_init(argv[0], internal_config.syslog_facility) < 0)
 860                 rte_panic("Cannot init logs\n");*/
 861
 862         if (rte_eal_alarm_init() < 0)
 863                 rte_panic("Cannot init interrupt-handling thread\n");
 864
 865         if (rte_eal_intr_init() < 0)
 866                 rte_panic("Cannot init interrupt-handling thread\n");
 867
 868         if (rte_eal_timer_init() < 0)
 869                 rte_panic("Cannot init HPET or TSC timers\n");
 870
 871         if (rte_eal_pci_init() < 0)
 872                 rte_panic("Cannot init PCI\n");
 873
 874         RTE_LOG(DEBUG, EAL, "Master core %u is ready (tid=%p)\n",
 875                 rte_config.master_lcore, thread_id);
 876
 877         eal_check_mem_on_local_socket();
 878
 879         rte_eal_mcfg_complete();
 880
 881         if (rte_eal_vdev_init() < 0)
 882                 rte_panic("Cannot init virtual devices\n");
 883
 884         RTE_LCORE_FOREACH_SLAVE(i) {
 885
 886                 /*
 887                  * create communication pipes between master thread
 888                  * and children
 889                  */
 890                 if (pipe(lcore_config[i].pipe_master2slave) < 0)
 891                         rte_panic("Cannot create pipe\n");
 892                 if (pipe(lcore_config[i].pipe_slave2master) < 0)
 893                         rte_panic("Cannot create pipe\n");
 894
 895                 lcore_config[i].state = WAIT;
 896
 897                 /* create a thread for each lcore */
 898                 ret = pthread_create(&lcore_config[i].thread_id, NULL,
 899                                      eal_thread_loop, NULL);
 900                 if (ret != 0)
 901                         rte_panic("Cannot create thread\n");
 902         }
 903
 904         eal_thread_init_master(rte_config.master_lcore);
 905
 906         /*
 907          * Launch a dummy function on all slave lcores, so that master lcore
 908          * knows they are all ready when this function returns.
 909          */
 910         rte_eal_mp_remote_launch(sync_func, NULL, SKIP_MASTER);
 911         rte_eal_mp_wait_lcore();
 912
 913         return fctret;
 914 }
 915
 916 /* get core role */
 917 enum rte_lcore_role_t
 918 rte_eal_lcore_role(unsigned lcore_id)
 919 {
 920         return (rte_config.lcore_role[lcore_id]);
 921 }
 922
 923 enum rte_proc_type_t
 924 rte_eal_process_type(void)
 925 {
 926         return (rte_config.process_type);
 927 }
 928