4 * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
5 * Copyright(c) 2012-2014 6WIND S.A.
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9 * modification, are permitted provided that the following conditions
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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
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.
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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32 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
52 #include <sys/queue.h>
55 #include <rte_common.h>
56 #include <rte_debug.h>
57 #include <rte_memory.h>
58 #include <rte_memzone.h>
59 #include <rte_launch.h>
60 #include <rte_tailq.h>
62 #include <rte_eal_memconfig.h>
63 #include <rte_per_lcore.h>
64 #include <rte_lcore.h>
66 #include <rte_random.h>
67 #include <rte_cycles.h>
68 #include <rte_string_fns.h>
69 #include <rte_cpuflags.h>
70 #include <rte_interrupts.h>
72 #include <rte_devargs.h>
73 #include <rte_common.h>
74 #include <rte_version.h>
75 #include <rte_atomic.h>
76 #include <malloc_heap.h>
77 #include <rte_eth_ring.h>
79 #include "eal_private.h"
80 #include "eal_thread.h"
81 #include "eal_internal_cfg.h"
82 #include "eal_filesystem.h"
83 #include "eal_hugepages.h"
85 #define OPT_HUGE_DIR "huge-dir"
86 #define OPT_PROC_TYPE "proc-type"
87 #define OPT_NO_SHCONF "no-shconf"
88 #define OPT_NO_HPET "no-hpet"
89 #define OPT_VMWARE_TSC_MAP "vmware-tsc-map"
90 #define OPT_NO_PCI "no-pci"
91 #define OPT_NO_HUGE "no-huge"
92 #define OPT_FILE_PREFIX "file-prefix"
93 #define OPT_SOCKET_MEM "socket-mem"
94 #define OPT_USE_DEVICE "use-device"
95 #define OPT_PCI_WHITELIST "pci-whitelist"
96 #define OPT_PCI_BLACKLIST "pci-blacklist"
97 #define OPT_VDEV "vdev"
98 #define OPT_SYSLOG "syslog"
99 #define OPT_BASE_VIRTADDR "base-virtaddr"
100 #define OPT_XEN_DOM0 "xen-dom0"
101 #define OPT_CREATE_UIO_DEV "create-uio-dev"
103 #define RTE_EAL_BLACKLIST_SIZE 0x100
105 #define MEMSIZE_IF_NO_HUGE_PAGE (64ULL * 1024ULL * 1024ULL)
107 #define SOCKET_MEM_STRLEN (RTE_MAX_NUMA_NODES * 10)
109 #define HIGHEST_RPL 3
111 #define BITS_PER_HEX 4
113 /* Allow the application to print its usage message too if set */
114 static rte_usage_hook_t rte_application_usage_hook = NULL;
116 TAILQ_HEAD(shared_driver_list, shared_driver);
118 /* Definition for shared object drivers. */
119 struct shared_driver {
120 TAILQ_ENTRY(shared_driver) next;
126 /* List of external loadable drivers */
127 static struct shared_driver_list solib_list =
128 TAILQ_HEAD_INITIALIZER(solib_list);
130 /* early configuration structure, when memory config is not mmapped */
131 static struct rte_mem_config early_mem_config;
133 /* define fd variable here, because file needs to be kept open for the
134 * duration of the program, as we hold a write lock on it in the primary proc */
135 static int mem_cfg_fd = -1;
137 static struct flock wr_lock = {
139 .l_whence = SEEK_SET,
140 .l_start = offsetof(struct rte_mem_config, memseg),
141 .l_len = sizeof(early_mem_config.memseg),
144 /* Address of global and public configuration */
145 static struct rte_config rte_config = {
146 .mem_config = &early_mem_config,
149 /* internal configuration (per-core) */
150 struct lcore_config lcore_config[RTE_MAX_LCORE];
152 /* internal configuration */
153 struct internal_config internal_config;
155 /* used by rte_rdtsc() */
156 int rte_cycles_vmware_tsc_map;
158 /* Return a pointer to the configuration structure */
160 rte_eal_get_configuration(void)
165 /* parse a sysfs (or other) file containing one integer value */
167 eal_parse_sysfs_value(const char *filename, unsigned long *val)
173 if ((f = fopen(filename, "r")) == NULL) {
174 RTE_LOG(ERR, EAL, "%s(): cannot open sysfs value %s\n",
179 if (fgets(buf, sizeof(buf), f) == NULL) {
180 RTE_LOG(ERR, EAL, "%s(): cannot read sysfs value %s\n",
185 *val = strtoul(buf, &end, 0);
186 if ((buf[0] == '\0') || (end == NULL) || (*end != '\n')) {
187 RTE_LOG(ERR, EAL, "%s(): cannot parse sysfs value %s\n",
197 /* create memory configuration in shared/mmap memory. Take out
198 * a write lock on the memsegs, so we can auto-detect primary/secondary.
199 * This means we never close the file while running (auto-close on exit).
200 * We also don't lock the whole file, so that in future we can use read-locks
201 * on other parts, e.g. memzones, to detect if there are running secondary
204 rte_eal_config_create(void)
206 void *rte_mem_cfg_addr;
209 const char *pathname = eal_runtime_config_path();
211 if (internal_config.no_shconf)
215 mem_cfg_fd = open(pathname, O_RDWR | O_CREAT, 0660);
217 rte_panic("Cannot open '%s' for rte_mem_config\n", pathname);
220 retval = ftruncate(mem_cfg_fd, sizeof(*rte_config.mem_config));
223 rte_panic("Cannot resize '%s' for rte_mem_config\n", pathname);
226 retval = fcntl(mem_cfg_fd, F_SETLK, &wr_lock);
229 rte_exit(EXIT_FAILURE, "Cannot create lock on '%s'. Is another primary "
230 "process running?\n", pathname);
233 rte_mem_cfg_addr = mmap(NULL, sizeof(*rte_config.mem_config),
234 PROT_READ | PROT_WRITE, MAP_SHARED, mem_cfg_fd, 0);
236 if (rte_mem_cfg_addr == MAP_FAILED){
237 rte_panic("Cannot mmap memory for rte_config\n");
239 memcpy(rte_mem_cfg_addr, &early_mem_config, sizeof(early_mem_config));
240 rte_config.mem_config = (struct rte_mem_config *) rte_mem_cfg_addr;
243 /* attach to an existing shared memory config */
245 rte_eal_config_attach(void)
247 void *rte_mem_cfg_addr;
248 const char *pathname = eal_runtime_config_path();
250 if (internal_config.no_shconf)
254 mem_cfg_fd = open(pathname, O_RDWR);
256 rte_panic("Cannot open '%s' for rte_mem_config\n", pathname);
259 rte_mem_cfg_addr = mmap(NULL, sizeof(*rte_config.mem_config),
260 PROT_READ | PROT_WRITE, MAP_SHARED, mem_cfg_fd, 0);
262 if (rte_mem_cfg_addr == MAP_FAILED)
263 rte_panic("Cannot mmap memory for rte_config\n");
265 rte_config.mem_config = (struct rte_mem_config *) rte_mem_cfg_addr;
268 /* Detect if we are a primary or a secondary process */
269 static enum rte_proc_type_t
270 eal_proc_type_detect(void)
272 enum rte_proc_type_t ptype = RTE_PROC_PRIMARY;
273 const char *pathname = eal_runtime_config_path();
275 /* if we can open the file but not get a write-lock we are a secondary
276 * process. NOTE: if we get a file handle back, we keep that open
277 * and don't close it to prevent a race condition between multiple opens */
278 if (((mem_cfg_fd = open(pathname, O_RDWR)) >= 0) &&
279 (fcntl(mem_cfg_fd, F_SETLK, &wr_lock) < 0))
280 ptype = RTE_PROC_SECONDARY;
282 RTE_LOG(INFO, EAL, "Auto-detected process type: %s\n",
283 ptype == RTE_PROC_PRIMARY ? "PRIMARY" : "SECONDARY");
288 /* Sets up rte_config structure with the pointer to shared memory config.*/
290 rte_config_init(void)
292 /* set the magic in configuration structure */
293 rte_config.magic = RTE_MAGIC;
294 rte_config.process_type = (internal_config.process_type == RTE_PROC_AUTO) ?
295 eal_proc_type_detect() : /* for auto, detect the type */
296 internal_config.process_type; /* otherwise use what's already set */
298 switch (rte_config.process_type){
299 case RTE_PROC_PRIMARY:
300 rte_eal_config_create();
302 case RTE_PROC_SECONDARY:
303 rte_eal_config_attach();
304 rte_eal_mcfg_wait_complete(rte_config.mem_config);
307 case RTE_PROC_INVALID:
308 rte_panic("Invalid process type\n");
312 /* Unlocks hugepage directories that were locked by eal_hugepage_info_init */
314 eal_hugedirs_unlock(void)
318 for (i = 0; i < MAX_HUGEPAGE_SIZES; i++)
320 /* skip uninitialized */
321 if (internal_config.hugepage_info[i].lock_descriptor < 0)
323 /* unlock hugepage file */
324 flock(internal_config.hugepage_info[i].lock_descriptor, LOCK_UN);
325 close(internal_config.hugepage_info[i].lock_descriptor);
326 /* reset the field */
327 internal_config.hugepage_info[i].lock_descriptor = -1;
333 eal_usage(const char *prgname)
335 printf("\nUsage: %s -c COREMASK -n NUM [-m NB] [-r NUM] [-b <domain:bus:devid.func>]"
336 "[--proc-type primary|secondary|auto] \n\n"
338 " -c COREMASK : A hexadecimal bitmask of cores to run on\n"
339 " -n NUM : Number of memory channels\n"
340 " -v : Display version information on startup\n"
341 " -d LIB.so : add driver (can be used multiple times)\n"
342 " -m MB : memory to allocate (see also --"OPT_SOCKET_MEM")\n"
343 " -r NUM : force number of memory ranks (don't detect)\n"
344 " --"OPT_XEN_DOM0" : support application running on Xen Domain0 "
345 "without hugetlbfs\n"
346 " --"OPT_SYSLOG" : set syslog facility\n"
347 " --"OPT_SOCKET_MEM" : memory to allocate on specific \n"
348 " sockets (use comma separated values)\n"
349 " --"OPT_HUGE_DIR" : directory where hugetlbfs is mounted\n"
350 " --"OPT_PROC_TYPE" : type of this process\n"
351 " --"OPT_FILE_PREFIX": prefix for hugepage filenames\n"
352 " --"OPT_PCI_BLACKLIST", -b: add a PCI device in black list.\n"
353 " Prevent EAL from using this PCI device. The argument\n"
354 " format is <domain:bus:devid.func>.\n"
355 " --"OPT_PCI_WHITELIST", -w: add a PCI device in white list.\n"
356 " Only use the specified PCI devices. The argument format\n"
357 " is <[domain:]bus:devid.func>. This option can be present\n"
358 " several times (once per device).\n"
359 " [NOTE: PCI whitelist cannot be used with -b option]\n"
360 " --"OPT_VDEV": add a virtual device.\n"
361 " The argument format is <driver><id>[,key=val,...]\n"
362 " (ex: --vdev=eth_pcap0,iface=eth2).\n"
363 " --"OPT_VMWARE_TSC_MAP": use VMware TSC map instead of "
365 " --"OPT_BASE_VIRTADDR": specify base virtual address\n"
366 " --"OPT_CREATE_UIO_DEV": create /dev/uioX (usually done by hotplug)\n"
367 "\nEAL options for DEBUG use only:\n"
368 " --"OPT_NO_HUGE" : use malloc instead of hugetlbfs\n"
369 " --"OPT_NO_PCI" : disable pci\n"
370 " --"OPT_NO_HPET" : disable hpet\n"
371 " --"OPT_NO_SHCONF": no shared config (mmap'd files)\n"
374 /* Allow the application to print its usage message too if hook is set */
375 if ( rte_application_usage_hook ) {
376 printf("===== Application Usage =====\n\n");
377 rte_application_usage_hook(prgname);
381 /* Set a per-application usage message */
383 rte_set_application_usage_hook( rte_usage_hook_t usage_func )
385 rte_usage_hook_t old_func;
387 /* Will be NULL on the first call to denote the last usage routine. */
388 old_func = rte_application_usage_hook;
389 rte_application_usage_hook = usage_func;
395 * Parse the coremask given as argument (hexadecimal string) and fill
396 * the global configuration (core role and core count) with the parsed
399 static int xdigit2val(unsigned char c)
411 eal_parse_coremask(const char *coremask)
413 struct rte_config *cfg = rte_eal_get_configuration();
419 if (coremask == NULL)
421 /* Remove all blank characters ahead and after .
422 * Remove 0x/0X if exists.
424 while (isblank(*coremask))
426 if (coremask[0] == '0' && ((coremask[1] == 'x')
427 || (coremask[1] == 'X')) )
429 i = strnlen(coremask, PATH_MAX);
430 while ((i > 0) && isblank(coremask[i - 1]))
435 for (i = i - 1; i >= 0 && idx < RTE_MAX_LCORE; i--) {
437 if (isxdigit(c) == 0) {
438 /* invalid characters */
442 for(j = 0; j < BITS_PER_HEX && idx < RTE_MAX_LCORE; j++, idx++) {
444 if (!lcore_config[idx].detected) {
445 RTE_LOG(ERR, EAL, "lcore %u "
446 "unavailable\n", idx);
449 cfg->lcore_role[idx] = ROLE_RTE;
451 cfg->master_lcore = idx;
454 cfg->lcore_role[idx] = ROLE_OFF;
459 if(coremask[i] != '0')
461 for(; idx < RTE_MAX_LCORE; idx++)
462 cfg->lcore_role[idx] = ROLE_OFF;
465 /* Update the count of enabled logical cores of the EAL configuration */
466 cfg->lcore_count = count;
471 eal_parse_syslog(const char *facility)
478 { "auth", LOG_AUTH },
479 { "cron", LOG_CRON },
480 { "daemon", LOG_DAEMON },
482 { "kern", LOG_KERN },
484 { "mail", LOG_MAIL },
485 { "news", LOG_NEWS },
486 { "syslog", LOG_SYSLOG },
487 { "user", LOG_USER },
488 { "uucp", LOG_UUCP },
489 { "local0", LOG_LOCAL0 },
490 { "local1", LOG_LOCAL1 },
491 { "local2", LOG_LOCAL2 },
492 { "local3", LOG_LOCAL3 },
493 { "local4", LOG_LOCAL4 },
494 { "local5", LOG_LOCAL5 },
495 { "local6", LOG_LOCAL6 },
496 { "local7", LOG_LOCAL7 },
500 for (i = 0; map[i].name; i++) {
501 if (!strcmp(facility, map[i].name)) {
502 internal_config.syslog_facility = map[i].value;
510 eal_parse_socket_mem(char *socket_mem)
512 char * arg[RTE_MAX_NUMA_NODES];
515 uint64_t total_mem = 0;
517 len = strnlen(socket_mem, SOCKET_MEM_STRLEN);
518 if (len == SOCKET_MEM_STRLEN) {
519 RTE_LOG(ERR, EAL, "--socket-mem is too long\n");
523 /* all other error cases will be caught later */
524 if (!isdigit(socket_mem[len-1]))
527 /* split the optarg into separate socket values */
528 arg_num = rte_strsplit(socket_mem, len,
529 arg, RTE_MAX_NUMA_NODES, ',');
531 /* if split failed, or 0 arguments */
535 internal_config.force_sockets = 1;
537 /* parse each defined socket option */
539 for (i = 0; i < arg_num; i++) {
541 internal_config.socket_mem[i] = strtoull(arg[i], &end, 10);
543 /* check for invalid input */
545 (arg[i][0] == '\0') || (end == NULL) || (*end != '\0'))
547 internal_config.socket_mem[i] *= 1024ULL;
548 internal_config.socket_mem[i] *= 1024ULL;
549 total_mem += internal_config.socket_mem[i];
552 /* check if we have a positive amount of total memory */
560 eal_parse_base_virtaddr(const char *arg)
565 addr = strtoull(arg, &end, 16);
567 /* check for errors */
568 if ((errno != 0) || (arg[0] == '\0') || end == NULL || (*end != '\0'))
571 /* make sure we don't exceed 32-bit boundary on 32-bit target */
572 #ifndef RTE_ARCH_X86_64
573 if (addr >= UINTPTR_MAX)
577 /* align the addr on 2M boundary */
578 internal_config.base_virtaddr = RTE_PTR_ALIGN_CEIL((uintptr_t)addr,
585 eal_get_hugepage_mem_size(void)
590 for (i = 0; i < internal_config.num_hugepage_sizes; i++) {
591 struct hugepage_info *hpi = &internal_config.hugepage_info[i];
592 if (hpi->hugedir != NULL) {
593 for (j = 0; j < RTE_MAX_NUMA_NODES; j++) {
594 size += hpi->hugepage_sz * hpi->num_pages[j];
599 return (size < SIZE_MAX) ? (size_t)(size) : SIZE_MAX;
602 static enum rte_proc_type_t
603 eal_parse_proc_type(const char *arg)
605 if (strncasecmp(arg, "primary", sizeof("primary")) == 0)
606 return RTE_PROC_PRIMARY;
607 if (strncasecmp(arg, "secondary", sizeof("secondary")) == 0)
608 return RTE_PROC_SECONDARY;
609 if (strncasecmp(arg, "auto", sizeof("auto")) == 0)
610 return RTE_PROC_AUTO;
612 return RTE_PROC_INVALID;
615 /* Parse the argument given in the command line of the application */
617 eal_parse_args(int argc, char **argv)
623 char *prgname = argv[0];
624 static struct option lgopts[] = {
625 {OPT_NO_HUGE, 0, 0, 0},
626 {OPT_NO_PCI, 0, 0, 0},
627 {OPT_NO_HPET, 0, 0, 0},
628 {OPT_VMWARE_TSC_MAP, 0, 0, 0},
629 {OPT_HUGE_DIR, 1, 0, 0},
630 {OPT_NO_SHCONF, 0, 0, 0},
631 {OPT_PROC_TYPE, 1, 0, 0},
632 {OPT_FILE_PREFIX, 1, 0, 0},
633 {OPT_SOCKET_MEM, 1, 0, 0},
634 {OPT_PCI_WHITELIST, 1, 0, 0},
635 {OPT_PCI_BLACKLIST, 1, 0, 0},
637 {OPT_SYSLOG, 1, NULL, 0},
638 {OPT_BASE_VIRTADDR, 1, 0, 0},
639 {OPT_XEN_DOM0, 0, 0, 0},
640 {OPT_CREATE_UIO_DEV, 1, NULL, 0},
643 struct shared_driver *solib;
647 internal_config.memory = 0;
648 internal_config.force_nrank = 0;
649 internal_config.force_nchannel = 0;
650 internal_config.hugefile_prefix = HUGEFILE_PREFIX_DEFAULT;
651 internal_config.hugepage_dir = NULL;
652 internal_config.force_sockets = 0;
653 internal_config.syslog_facility = LOG_DAEMON;
654 internal_config.xen_dom0_support = 0;
655 #ifdef RTE_LIBEAL_USE_HPET
656 internal_config.no_hpet = 0;
658 internal_config.no_hpet = 1;
660 /* zero out the NUMA config */
661 for (i = 0; i < RTE_MAX_NUMA_NODES; i++)
662 internal_config.socket_mem[i] = 0;
664 /* zero out hugedir descriptors */
665 for (i = 0; i < MAX_HUGEPAGE_SIZES; i++)
666 internal_config.hugepage_info[i].lock_descriptor = -1;
668 internal_config.vmware_tsc_map = 0;
669 internal_config.base_virtaddr = 0;
671 while ((opt = getopt_long(argc, argvopt, "b:w:c:d:m:n:r:v",
672 lgopts, &option_index)) != EOF) {
677 if (rte_eal_devargs_add(RTE_DEVTYPE_BLACKLISTED_PCI,
685 if (rte_eal_devargs_add(RTE_DEVTYPE_WHITELISTED_PCI,
693 if (eal_parse_coremask(optarg) < 0) {
694 RTE_LOG(ERR, EAL, "invalid coremask\n");
700 /* force loading of external driver */
702 solib = malloc(sizeof(*solib));
704 RTE_LOG(ERR, EAL, "malloc(solib) failed\n");
707 memset(solib, 0, sizeof(*solib));
708 strncpy(solib->name, optarg, PATH_MAX-1);
709 solib->name[PATH_MAX-1] = 0;
710 TAILQ_INSERT_TAIL(&solib_list, solib, next);
714 internal_config.memory = atoi(optarg);
715 internal_config.memory *= 1024ULL;
716 internal_config.memory *= 1024ULL;
718 /* force number of channels */
720 internal_config.force_nchannel = atoi(optarg);
721 if (internal_config.force_nchannel == 0 ||
722 internal_config.force_nchannel > 4) {
723 RTE_LOG(ERR, EAL, "invalid channel number\n");
728 /* force number of ranks */
730 internal_config.force_nrank = atoi(optarg);
731 if (internal_config.force_nrank == 0 ||
732 internal_config.force_nrank > 16) {
733 RTE_LOG(ERR, EAL, "invalid rank number\n");
739 /* since message is explicitly requested by user, we
740 * write message at highest log level so it can always be seen
741 * even if info or warning messages are disabled */
742 RTE_LOG(CRIT, EAL, "RTE Version: '%s'\n", rte_version());
747 if (!strcmp(lgopts[option_index].name, OPT_NO_HUGE)) {
748 internal_config.no_hugetlbfs = 1;
750 if (!strcmp(lgopts[option_index].name, OPT_XEN_DOM0)) {
751 #ifdef RTE_LIBRTE_XEN_DOM0
752 internal_config.xen_dom0_support = 1;
754 RTE_LOG(ERR, EAL, "Can't support DPDK app "
755 "running on Dom0, please configure"
756 " RTE_LIBRTE_XEN_DOM0=y\n");
760 else if (!strcmp(lgopts[option_index].name, OPT_NO_PCI)) {
761 internal_config.no_pci = 1;
763 else if (!strcmp(lgopts[option_index].name, OPT_NO_HPET)) {
764 internal_config.no_hpet = 1;
766 else if (!strcmp(lgopts[option_index].name, OPT_VMWARE_TSC_MAP)) {
767 internal_config.vmware_tsc_map = 1;
769 else if (!strcmp(lgopts[option_index].name, OPT_NO_SHCONF)) {
770 internal_config.no_shconf = 1;
772 else if (!strcmp(lgopts[option_index].name, OPT_HUGE_DIR)) {
773 internal_config.hugepage_dir = optarg;
775 else if (!strcmp(lgopts[option_index].name, OPT_PROC_TYPE)) {
776 internal_config.process_type = eal_parse_proc_type(optarg);
778 else if (!strcmp(lgopts[option_index].name, OPT_FILE_PREFIX)) {
779 internal_config.hugefile_prefix = optarg;
781 else if (!strcmp(lgopts[option_index].name, OPT_SOCKET_MEM)) {
782 if (eal_parse_socket_mem(optarg) < 0) {
783 RTE_LOG(ERR, EAL, "invalid parameters for --"
784 OPT_SOCKET_MEM "\n");
789 else if (!strcmp(lgopts[option_index].name, OPT_USE_DEVICE)) {
790 printf("The --use-device option is deprecated, please use\n"
791 "--whitelist or --vdev instead.\n");
795 else if (!strcmp(lgopts[option_index].name, OPT_PCI_BLACKLIST)) {
796 if (rte_eal_devargs_add(RTE_DEVTYPE_BLACKLISTED_PCI,
802 else if (!strcmp(lgopts[option_index].name, OPT_PCI_WHITELIST)) {
803 if (rte_eal_devargs_add(RTE_DEVTYPE_WHITELISTED_PCI,
809 else if (!strcmp(lgopts[option_index].name, OPT_VDEV)) {
810 if (rte_eal_devargs_add(RTE_DEVTYPE_VIRTUAL,
816 else if (!strcmp(lgopts[option_index].name, OPT_SYSLOG)) {
817 if (eal_parse_syslog(optarg) < 0) {
818 RTE_LOG(ERR, EAL, "invalid parameters for --"
824 else if (!strcmp(lgopts[option_index].name, OPT_BASE_VIRTADDR)) {
825 if (eal_parse_base_virtaddr(optarg) < 0) {
826 RTE_LOG(ERR, EAL, "invalid parameter for --"
827 OPT_BASE_VIRTADDR "\n");
832 else if (!strcmp(lgopts[option_index].name, OPT_CREATE_UIO_DEV)) {
833 internal_config.create_uio_dev = 1;
845 RTE_LOG(ERR, EAL, "coremask not specified\n");
849 if (internal_config.process_type == RTE_PROC_AUTO){
850 internal_config.process_type = eal_proc_type_detect();
852 if (internal_config.process_type == RTE_PROC_INVALID){
853 RTE_LOG(ERR, EAL, "Invalid process type specified\n");
857 if (internal_config.process_type == RTE_PROC_PRIMARY &&
858 internal_config.force_nchannel == 0) {
859 RTE_LOG(ERR, EAL, "Number of memory channels (-n) not specified\n");
863 if (index(internal_config.hugefile_prefix,'%') != NULL){
864 RTE_LOG(ERR, EAL, "Invalid char, '%%', in '"OPT_FILE_PREFIX"' option\n");
868 if (internal_config.memory > 0 && internal_config.force_sockets == 1) {
869 RTE_LOG(ERR, EAL, "Options -m and --socket-mem cannot be specified "
870 "at the same time\n");
874 /* --no-huge doesn't make sense with either -m or --socket-mem */
875 if (internal_config.no_hugetlbfs &&
876 (internal_config.memory > 0 ||
877 internal_config.force_sockets == 1)) {
878 RTE_LOG(ERR, EAL, "Options -m or --socket-mem cannot be specified "
879 "together with --no-huge!\n");
883 /* --xen-dom0 doesn't make sense with --socket-mem */
884 if (internal_config.xen_dom0_support && internal_config.force_sockets == 1) {
885 RTE_LOG(ERR, EAL, "Options --socket-mem cannot be specified "
886 "together with --xen_dom0!\n");
891 if (rte_eal_devargs_type_count(RTE_DEVTYPE_WHITELISTED_PCI) != 0 &&
892 rte_eal_devargs_type_count(RTE_DEVTYPE_BLACKLISTED_PCI) != 0) {
893 RTE_LOG(ERR, EAL, "Error: blacklist [-b] and whitelist "
894 "[-w] options cannot be used at the same time\n");
900 argv[optind-1] = prgname;
902 /* if no memory amounts were requested, this will result in 0 and
903 * will be overriden later, right after eal_hugepage_info_init() */
904 for (i = 0; i < RTE_MAX_NUMA_NODES; i++)
905 internal_config.memory += internal_config.socket_mem[i];
908 optind = 0; /* reset getopt lib */
913 eal_check_mem_on_local_socket(void)
915 const struct rte_memseg *ms;
918 socket_id = rte_lcore_to_socket_id(rte_config.master_lcore);
920 ms = rte_eal_get_physmem_layout();
922 for (i = 0; i < RTE_MAX_MEMSEG; i++)
923 if (ms[i].socket_id == socket_id &&
927 RTE_LOG(WARNING, EAL, "WARNING: Master core has no "
928 "memory on local socket!\n");
932 sync_func(__attribute__((unused)) void *arg)
938 rte_eal_mcfg_complete(void)
940 /* ALL shared mem_config related INIT DONE */
941 if (rte_config.process_type == RTE_PROC_PRIMARY)
942 rte_config.mem_config->magic = RTE_MAGIC;
946 * Request iopl priviledge for all RPL, returns 0 on success
949 rte_eal_iopl_init(void)
951 return iopl(HIGHEST_RPL);
954 /* Launch threads, called at application init(). */
956 rte_eal_init(int argc, char **argv)
960 static rte_atomic32_t run_once = RTE_ATOMIC32_INIT(0);
961 struct shared_driver *solib = NULL;
964 if (!rte_atomic32_test_and_set(&run_once))
967 logid = strrchr(argv[0], '/');
968 logid = strdup(logid ? logid + 1: argv[0]);
970 thread_id = pthread_self();
972 if (rte_eal_log_early_init() < 0)
973 rte_panic("Cannot init early logs\n");
975 if (rte_eal_cpu_init() < 0)
976 rte_panic("Cannot detect lcores\n");
978 fctret = eal_parse_args(argc, argv);
982 if (internal_config.no_hugetlbfs == 0 &&
983 internal_config.process_type != RTE_PROC_SECONDARY &&
984 internal_config.xen_dom0_support == 0 &&
985 eal_hugepage_info_init() < 0)
986 rte_panic("Cannot get hugepage information\n");
988 if (internal_config.memory == 0 && internal_config.force_sockets == 0) {
989 if (internal_config.no_hugetlbfs)
990 internal_config.memory = MEMSIZE_IF_NO_HUGE_PAGE;
992 internal_config.memory = eal_get_hugepage_mem_size();
995 if (internal_config.vmware_tsc_map == 1) {
996 #ifdef RTE_LIBRTE_EAL_VMWARE_TSC_MAP_SUPPORT
997 rte_cycles_vmware_tsc_map = 1;
998 RTE_LOG (DEBUG, EAL, "Using VMWARE TSC MAP, "
999 "you must have monitor_control.pseudo_perfctr = TRUE\n");
1001 RTE_LOG (WARNING, EAL, "Ignoring --vmware-tsc-map because "
1002 "RTE_LIBRTE_EAL_VMWARE_TSC_MAP_SUPPORT is not set\n");
1006 rte_srand(rte_rdtsc());
1010 if (rte_eal_iopl_init() == 0)
1011 rte_config.flags |= EAL_FLG_HIGH_IOPL;
1013 if (rte_eal_pci_init() < 0)
1014 rte_panic("Cannot init PCI\n");
1016 #ifdef RTE_LIBRTE_IVSHMEM
1017 if (rte_eal_ivshmem_init() < 0)
1018 rte_panic("Cannot init IVSHMEM\n");
1021 if (rte_eal_memory_init() < 0)
1022 rte_panic("Cannot init memory\n");
1024 /* the directories are locked during eal_hugepage_info_init */
1025 eal_hugedirs_unlock();
1027 if (rte_eal_memzone_init() < 0)
1028 rte_panic("Cannot init memzone\n");
1030 if (rte_eal_tailqs_init() < 0)
1031 rte_panic("Cannot init tail queues for objects\n");
1033 #ifdef RTE_LIBRTE_IVSHMEM
1034 if (rte_eal_ivshmem_obj_init() < 0)
1035 rte_panic("Cannot init IVSHMEM objects\n");
1038 if (rte_eal_log_init(logid, internal_config.syslog_facility) < 0)
1039 rte_panic("Cannot init logs\n");
1041 if (rte_eal_alarm_init() < 0)
1042 rte_panic("Cannot init interrupt-handling thread\n");
1044 if (rte_eal_intr_init() < 0)
1045 rte_panic("Cannot init interrupt-handling thread\n");
1047 if (rte_eal_timer_init() < 0)
1048 rte_panic("Cannot init HPET or TSC timers\n");
1050 eal_check_mem_on_local_socket();
1052 rte_eal_mcfg_complete();
1054 TAILQ_FOREACH(solib, &solib_list, next) {
1055 RTE_LOG(INFO, EAL, "open shared lib %s\n", solib->name);
1056 solib->lib_handle = dlopen(solib->name, RTLD_NOW);
1057 if ((solib->lib_handle == NULL) && (solib->name[0] != '/')) {
1058 /* relative path: try again with "./" prefix */
1059 char sopath[PATH_MAX];
1060 snprintf(sopath, sizeof(sopath), "./%s", solib->name);
1061 solib->lib_handle = dlopen(sopath, RTLD_NOW);
1063 if (solib->lib_handle == NULL)
1064 RTE_LOG(WARNING, EAL, "%s\n", dlerror());
1067 if (rte_eal_vdev_init() < 0)
1068 rte_panic("Cannot init virtual devices\n");
1070 RTE_LOG(DEBUG, EAL, "Master core %u is ready (tid=%x)\n",
1071 rte_config.master_lcore, (int)thread_id);
1073 RTE_LCORE_FOREACH_SLAVE(i) {
1076 * create communication pipes between master thread
1079 if (pipe(lcore_config[i].pipe_master2slave) < 0)
1080 rte_panic("Cannot create pipe\n");
1081 if (pipe(lcore_config[i].pipe_slave2master) < 0)
1082 rte_panic("Cannot create pipe\n");
1084 lcore_config[i].state = WAIT;
1086 /* create a thread for each lcore */
1087 ret = pthread_create(&lcore_config[i].thread_id, NULL,
1088 eal_thread_loop, NULL);
1090 rte_panic("Cannot create thread\n");
1093 eal_thread_init_master(rte_config.master_lcore);
1096 * Launch a dummy function on all slave lcores, so that master lcore
1097 * knows they are all ready when this function returns.
1099 rte_eal_mp_remote_launch(sync_func, NULL, SKIP_MASTER);
1100 rte_eal_mp_wait_lcore();
1106 enum rte_lcore_role_t
1107 rte_eal_lcore_role(unsigned lcore_id)
1109 return (rte_config.lcore_role[lcore_id]);
1112 enum rte_proc_type_t
1113 rte_eal_process_type(void)
1115 return (rte_config.process_type);
1118 int rte_eal_has_hugepages(void)
1120 return ! internal_config.no_hugetlbfs;