4 * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
5 * Copyright(c) 2012-2013 6WIND S.A.
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9 * modification, are permitted provided that the following conditions
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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
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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_common.h>
73 #include <rte_version.h>
74 #include <rte_atomic.h>
75 #include <malloc_heap.h>
76 #include <rte_eth_ring.h>
78 #include "eal_private.h"
79 #include "eal_thread.h"
80 #include "eal_internal_cfg.h"
81 #include "eal_filesystem.h"
82 #include "eal_hugepages.h"
84 #define OPT_HUGE_DIR "huge-dir"
85 #define OPT_PROC_TYPE "proc-type"
86 #define OPT_NO_SHCONF "no-shconf"
87 #define OPT_NO_HPET "no-hpet"
88 #define OPT_VMWARE_TSC_MAP "vmware-tsc-map"
89 #define OPT_NO_PCI "no-pci"
90 #define OPT_NO_HUGE "no-huge"
91 #define OPT_FILE_PREFIX "file-prefix"
92 #define OPT_SOCKET_MEM "socket-mem"
93 #define OPT_USE_DEVICE "use-device"
94 #define OPT_SYSLOG "syslog"
95 #define OPT_BASE_VIRTADDR "base-virtaddr"
96 #define OPT_XEN_DOM0 "xen-dom0"
97 #define OPT_CREATE_UIO_DEV "create-uio-dev"
99 #define RTE_EAL_BLACKLIST_SIZE 0x100
101 #define MEMSIZE_IF_NO_HUGE_PAGE (64ULL * 1024ULL * 1024ULL)
103 #define SOCKET_MEM_STRLEN (RTE_MAX_NUMA_NODES * 10)
105 #define HIGHEST_RPL 3
107 #define BITS_PER_HEX 4
109 /* Allow the application to print its usage message too if set */
110 static rte_usage_hook_t rte_application_usage_hook = NULL;
112 TAILQ_HEAD(shared_driver_list, shared_driver);
114 /* Definition for shared object drivers. */
115 struct shared_driver {
116 TAILQ_ENTRY(shared_driver) next;
122 /* List of external loadable drivers */
123 static struct shared_driver_list solib_list =
124 TAILQ_HEAD_INITIALIZER(solib_list);
126 /* early configuration structure, when memory config is not mmapped */
127 static struct rte_mem_config early_mem_config;
129 /* define fd variable here, because file needs to be kept open for the
130 * duration of the program, as we hold a write lock on it in the primary proc */
131 static int mem_cfg_fd = -1;
133 static struct flock wr_lock = {
135 .l_whence = SEEK_SET,
136 .l_start = offsetof(struct rte_mem_config, memseg),
137 .l_len = sizeof(early_mem_config.memseg),
140 /* Address of global and public configuration */
141 static struct rte_config rte_config = {
142 .mem_config = &early_mem_config,
145 static struct rte_pci_addr eal_dev_blacklist[RTE_EAL_BLACKLIST_SIZE];
147 /* internal configuration (per-core) */
148 struct lcore_config lcore_config[RTE_MAX_LCORE];
150 /* internal configuration */
151 struct internal_config internal_config;
153 /* used by rte_rdtsc() */
154 int rte_cycles_vmware_tsc_map;
156 /* Return a pointer to the configuration structure */
158 rte_eal_get_configuration(void)
163 /* parse a sysfs (or other) file containing one integer value */
165 eal_parse_sysfs_value(const char *filename, unsigned long *val)
171 if ((f = fopen(filename, "r")) == NULL) {
172 RTE_LOG(ERR, EAL, "%s(): cannot open sysfs value %s\n",
177 if (fgets(buf, sizeof(buf), f) == NULL) {
178 RTE_LOG(ERR, EAL, "%s(): cannot read sysfs value %s\n",
183 *val = strtoul(buf, &end, 0);
184 if ((buf[0] == '\0') || (end == NULL) || (*end != '\n')) {
185 RTE_LOG(ERR, EAL, "%s(): cannot parse sysfs value %s\n",
195 /* create memory configuration in shared/mmap memory. Take out
196 * a write lock on the memsegs, so we can auto-detect primary/secondary.
197 * This means we never close the file while running (auto-close on exit).
198 * We also don't lock the whole file, so that in future we can use read-locks
199 * on other parts, e.g. memzones, to detect if there are running secondary
202 rte_eal_config_create(void)
204 void *rte_mem_cfg_addr;
207 const char *pathname = eal_runtime_config_path();
209 if (internal_config.no_shconf)
213 mem_cfg_fd = open(pathname, O_RDWR | O_CREAT, 0660);
215 rte_panic("Cannot open '%s' for rte_mem_config\n", pathname);
218 retval = ftruncate(mem_cfg_fd, sizeof(*rte_config.mem_config));
221 rte_panic("Cannot resize '%s' for rte_mem_config\n", pathname);
224 retval = fcntl(mem_cfg_fd, F_SETLK, &wr_lock);
227 rte_exit(EXIT_FAILURE, "Cannot create lock on '%s'. Is another primary "
228 "process running?\n", pathname);
231 rte_mem_cfg_addr = mmap(NULL, sizeof(*rte_config.mem_config),
232 PROT_READ | PROT_WRITE, MAP_SHARED, mem_cfg_fd, 0);
234 if (rte_mem_cfg_addr == MAP_FAILED){
235 rte_panic("Cannot mmap memory for rte_config\n");
237 memcpy(rte_mem_cfg_addr, &early_mem_config, sizeof(early_mem_config));
238 rte_config.mem_config = (struct rte_mem_config *) rte_mem_cfg_addr;
241 /* attach to an existing shared memory config */
243 rte_eal_config_attach(void)
245 void *rte_mem_cfg_addr;
246 const char *pathname = eal_runtime_config_path();
248 if (internal_config.no_shconf)
252 mem_cfg_fd = open(pathname, O_RDWR);
254 rte_panic("Cannot open '%s' for rte_mem_config\n", pathname);
257 rte_mem_cfg_addr = mmap(NULL, sizeof(*rte_config.mem_config),
258 PROT_READ | PROT_WRITE, MAP_SHARED, mem_cfg_fd, 0);
260 if (rte_mem_cfg_addr == MAP_FAILED)
261 rte_panic("Cannot mmap memory for rte_config\n");
263 rte_config.mem_config = (struct rte_mem_config *) rte_mem_cfg_addr;
266 /* Detect if we are a primary or a secondary process */
267 static enum rte_proc_type_t
268 eal_proc_type_detect(void)
270 enum rte_proc_type_t ptype = RTE_PROC_PRIMARY;
271 const char *pathname = eal_runtime_config_path();
273 /* if we can open the file but not get a write-lock we are a secondary
274 * process. NOTE: if we get a file handle back, we keep that open
275 * and don't close it to prevent a race condition between multiple opens */
276 if (((mem_cfg_fd = open(pathname, O_RDWR)) >= 0) &&
277 (fcntl(mem_cfg_fd, F_SETLK, &wr_lock) < 0))
278 ptype = RTE_PROC_SECONDARY;
280 RTE_LOG(INFO, EAL, "Auto-detected process type: %s\n",
281 ptype == RTE_PROC_PRIMARY ? "PRIMARY" : "SECONDARY");
286 /* Sets up rte_config structure with the pointer to shared memory config.*/
288 rte_config_init(void)
290 /* set the magic in configuration structure */
291 rte_config.magic = RTE_MAGIC;
292 rte_config.process_type = (internal_config.process_type == RTE_PROC_AUTO) ?
293 eal_proc_type_detect() : /* for auto, detect the type */
294 internal_config.process_type; /* otherwise use what's already set */
296 switch (rte_config.process_type){
297 case RTE_PROC_PRIMARY:
298 rte_eal_config_create();
300 case RTE_PROC_SECONDARY:
301 rte_eal_config_attach();
302 rte_eal_mcfg_wait_complete(rte_config.mem_config);
305 case RTE_PROC_INVALID:
306 rte_panic("Invalid process type\n");
310 /* Unlocks hugepage directories that were locked by eal_hugepage_info_init */
312 eal_hugedirs_unlock(void)
316 for (i = 0; i < MAX_HUGEPAGE_SIZES; i++)
318 /* skip uninitialized */
319 if (internal_config.hugepage_info[i].lock_descriptor < 0)
321 /* unlock hugepage file */
322 flock(internal_config.hugepage_info[i].lock_descriptor, LOCK_UN);
323 close(internal_config.hugepage_info[i].lock_descriptor);
324 /* reset the field */
325 internal_config.hugepage_info[i].lock_descriptor = -1;
331 eal_usage(const char *prgname)
333 printf("\nUsage: %s -c COREMASK -n NUM [-m NB] [-r NUM] [-b <domain:bus:devid.func>]"
334 "[--proc-type primary|secondary|auto] \n\n"
336 " -c COREMASK : A hexadecimal bitmask of cores to run on\n"
337 " -n NUM : Number of memory channels\n"
338 " -v : Display version information on startup\n"
339 " -d LIB.so : add driver (can be used multiple times)\n"
340 " -b <domain:bus:devid.func>: to prevent EAL from using specified "
342 " (multiple -b options are allowed)\n"
343 " -m MB : memory to allocate (see also --"OPT_SOCKET_MEM")\n"
344 " -r NUM : force number of memory ranks (don't detect)\n"
345 " --"OPT_XEN_DOM0" : support application running on Xen Domain0 "
346 "without hugetlbfs\n"
347 " --"OPT_SYSLOG" : set syslog facility\n"
348 " --"OPT_SOCKET_MEM" : memory to allocate on specific \n"
349 " sockets (use comma separated values)\n"
350 " --"OPT_HUGE_DIR" : directory where hugetlbfs is mounted\n"
351 " --"OPT_PROC_TYPE" : type of this process\n"
352 " --"OPT_FILE_PREFIX": prefix for hugepage filenames\n"
353 " --"OPT_USE_DEVICE": use the specified ethernet device(s) only. "
354 "Use comma-separate <[domain:]bus:devid.func> values.\n"
355 " [NOTE: Cannot be used with -b option]\n"
356 " --"OPT_VMWARE_TSC_MAP": use VMware TSC map instead of "
358 " --"OPT_BASE_VIRTADDR": specify base virtual address\n"
359 " --"OPT_CREATE_UIO_DEV": create /dev/uioX (usually done by hotplug)\n"
360 "\nEAL options for DEBUG use only:\n"
361 " --"OPT_NO_HUGE" : use malloc instead of hugetlbfs\n"
362 " --"OPT_NO_PCI" : disable pci\n"
363 " --"OPT_NO_HPET" : disable hpet\n"
364 " --"OPT_NO_SHCONF": no shared config (mmap'd files)\n"
367 /* Allow the application to print its usage message too if hook is set */
368 if ( rte_application_usage_hook ) {
369 printf("===== Application Usage =====\n\n");
370 rte_application_usage_hook(prgname);
374 /* Set a per-application usage message */
376 rte_set_application_usage_hook( rte_usage_hook_t usage_func )
378 rte_usage_hook_t old_func;
380 /* Will be NULL on the first call to denote the last usage routine. */
381 old_func = rte_application_usage_hook;
382 rte_application_usage_hook = usage_func;
388 * Parse the coremask given as argument (hexadecimal string) and fill
389 * the global configuration (core role and core count) with the parsed
392 static int xdigit2val(unsigned char c)
404 eal_parse_coremask(const char *coremask)
406 struct rte_config *cfg = rte_eal_get_configuration();
412 if (coremask == NULL)
414 /* Remove all blank characters ahead and after .
415 * Remove 0x/0X if exists.
417 while (isblank(*coremask))
419 if (coremask[0] == '0' && ((coremask[1] == 'x')
420 || (coremask[1] == 'X')) )
422 i = strnlen(coremask, PATH_MAX);
423 while ((i > 0) && isblank(coremask[i - 1]))
428 for (i = i - 1; i >= 0 && idx < RTE_MAX_LCORE; i--) {
430 if (isxdigit(c) == 0) {
431 /* invalid characters */
435 for(j = 0; j < BITS_PER_HEX && idx < RTE_MAX_LCORE; j++, idx++) {
437 cfg->lcore_role[idx] = ROLE_RTE;
439 cfg->master_lcore = idx;
442 cfg->lcore_role[idx] = ROLE_OFF;
447 if(coremask[i] != '0')
449 for(; idx < RTE_MAX_LCORE; idx++)
450 cfg->lcore_role[idx] = ROLE_OFF;
453 /* Update the count of enabled logical cores of the EAL configuration */
454 cfg->lcore_count = count;
459 eal_parse_syslog(const char *facility)
466 { "auth", LOG_AUTH },
467 { "cron", LOG_CRON },
468 { "daemon", LOG_DAEMON },
470 { "kern", LOG_KERN },
472 { "mail", LOG_MAIL },
473 { "news", LOG_NEWS },
474 { "syslog", LOG_SYSLOG },
475 { "user", LOG_USER },
476 { "uucp", LOG_UUCP },
477 { "local0", LOG_LOCAL0 },
478 { "local1", LOG_LOCAL1 },
479 { "local2", LOG_LOCAL2 },
480 { "local3", LOG_LOCAL3 },
481 { "local4", LOG_LOCAL4 },
482 { "local5", LOG_LOCAL5 },
483 { "local6", LOG_LOCAL6 },
484 { "local7", LOG_LOCAL7 },
488 for (i = 0; map[i].name; i++) {
489 if (!strcmp(facility, map[i].name)) {
490 internal_config.syslog_facility = map[i].value;
498 eal_parse_socket_mem(char *socket_mem)
500 char * arg[RTE_MAX_NUMA_NODES];
503 uint64_t total_mem = 0;
505 len = strnlen(socket_mem, SOCKET_MEM_STRLEN);
506 if (len == SOCKET_MEM_STRLEN) {
507 RTE_LOG(ERR, EAL, "--socket-mem is too long\n");
511 /* all other error cases will be caught later */
512 if (!isdigit(socket_mem[len-1]))
515 /* split the optarg into separate socket values */
516 arg_num = rte_strsplit(socket_mem, len,
517 arg, RTE_MAX_NUMA_NODES, ',');
519 /* if split failed, or 0 arguments */
523 internal_config.force_sockets = 1;
525 /* parse each defined socket option */
527 for (i = 0; i < arg_num; i++) {
529 internal_config.socket_mem[i] = strtoull(arg[i], &end, 10);
531 /* check for invalid input */
533 (arg[i][0] == '\0') || (end == NULL) || (*end != '\0'))
535 internal_config.socket_mem[i] *= 1024ULL;
536 internal_config.socket_mem[i] *= 1024ULL;
537 total_mem += internal_config.socket_mem[i];
540 /* check if we have a positive amount of total memory */
548 eal_parse_base_virtaddr(const char *arg)
553 addr = strtoull(arg, &end, 16);
555 /* check for errors */
556 if ((errno != 0) || (arg[0] == '\0') || end == NULL || (*end != '\0'))
559 /* make sure we don't exceed 32-bit boundary on 32-bit target */
560 #ifndef RTE_ARCH_X86_64
561 if (addr >= UINTPTR_MAX)
565 /* align the addr on 2M boundary */
566 addr = RTE_PTR_ALIGN_CEIL(addr, RTE_PGSIZE_2M);
568 internal_config.base_virtaddr = (uintptr_t) addr;
573 eal_get_hugepage_mem_size(void)
578 for (i = 0; i < internal_config.num_hugepage_sizes; i++) {
579 struct hugepage_info *hpi = &internal_config.hugepage_info[i];
580 if (hpi->hugedir != NULL) {
581 for (j = 0; j < RTE_MAX_NUMA_NODES; j++) {
582 size += hpi->hugepage_sz * hpi->num_pages[j];
587 return (size < SIZE_MAX) ? (size_t)(size) : SIZE_MAX;
590 static enum rte_proc_type_t
591 eal_parse_proc_type(const char *arg)
593 if (strncasecmp(arg, "primary", sizeof("primary")) == 0)
594 return RTE_PROC_PRIMARY;
595 if (strncasecmp(arg, "secondary", sizeof("secondary")) == 0)
596 return RTE_PROC_SECONDARY;
597 if (strncasecmp(arg, "auto", sizeof("auto")) == 0)
598 return RTE_PROC_AUTO;
600 return RTE_PROC_INVALID;
604 eal_parse_blacklist_opt(const char *optarg, size_t idx)
606 if (idx >= sizeof (eal_dev_blacklist) / sizeof (eal_dev_blacklist[0])) {
607 RTE_LOG(ERR, EAL, "%s - too many devices to blacklist...\n", optarg);
609 } else if (eal_parse_pci_DomBDF(optarg, eal_dev_blacklist + idx) < 0 &&
610 eal_parse_pci_BDF(optarg, eal_dev_blacklist + idx) < 0) {
611 RTE_LOG(ERR, EAL, "%s - invalid device to blacklist...\n", optarg);
619 /* Parse the argument given in the command line of the application */
621 eal_parse_args(int argc, char **argv)
627 ssize_t blacklist_index = 0;
628 char *prgname = argv[0];
629 static struct option lgopts[] = {
630 {OPT_NO_HUGE, 0, 0, 0},
631 {OPT_NO_PCI, 0, 0, 0},
632 {OPT_NO_HPET, 0, 0, 0},
633 {OPT_VMWARE_TSC_MAP, 0, 0, 0},
634 {OPT_HUGE_DIR, 1, 0, 0},
635 {OPT_NO_SHCONF, 0, 0, 0},
636 {OPT_PROC_TYPE, 1, 0, 0},
637 {OPT_FILE_PREFIX, 1, 0, 0},
638 {OPT_SOCKET_MEM, 1, 0, 0},
639 {OPT_USE_DEVICE, 1, 0, 0},
640 {OPT_SYSLOG, 1, NULL, 0},
641 {OPT_BASE_VIRTADDR, 1, 0, 0},
642 {OPT_XEN_DOM0, 0, 0, 0},
643 {OPT_CREATE_UIO_DEV, 1, NULL, 0},
646 struct shared_driver *solib;
650 internal_config.memory = 0;
651 internal_config.force_nrank = 0;
652 internal_config.force_nchannel = 0;
653 internal_config.hugefile_prefix = HUGEFILE_PREFIX_DEFAULT;
654 internal_config.hugepage_dir = NULL;
655 internal_config.force_sockets = 0;
656 internal_config.syslog_facility = LOG_DAEMON;
657 internal_config.xen_dom0_support = 0;
658 #ifdef RTE_LIBEAL_USE_HPET
659 internal_config.no_hpet = 0;
661 internal_config.no_hpet = 1;
663 /* zero out the NUMA config */
664 for (i = 0; i < RTE_MAX_NUMA_NODES; i++)
665 internal_config.socket_mem[i] = 0;
667 /* zero out hugedir descriptors */
668 for (i = 0; i < MAX_HUGEPAGE_SIZES; i++)
669 internal_config.hugepage_info[i].lock_descriptor = -1;
671 internal_config.vmware_tsc_map = 0;
672 internal_config.base_virtaddr = 0;
674 while ((opt = getopt_long(argc, argvopt, "b:c:d:m:n:r:v",
675 lgopts, &option_index)) != EOF) {
680 if ((blacklist_index = eal_parse_blacklist_opt(optarg,
681 blacklist_index)) < 0) {
688 if (eal_parse_coremask(optarg) < 0) {
689 RTE_LOG(ERR, EAL, "invalid coremask\n");
695 /* force loading of external driver */
697 solib = malloc(sizeof(*solib));
699 RTE_LOG(ERR, EAL, "malloc(solib) failed\n");
702 memset(solib, 0, sizeof(*solib));
703 strncpy(solib->name, optarg, PATH_MAX-1);
704 solib->name[PATH_MAX-1] = 0;
705 TAILQ_INSERT_TAIL(&solib_list, solib, next);
709 internal_config.memory = atoi(optarg);
710 internal_config.memory *= 1024ULL;
711 internal_config.memory *= 1024ULL;
713 /* force number of channels */
715 internal_config.force_nchannel = atoi(optarg);
716 if (internal_config.force_nchannel == 0 ||
717 internal_config.force_nchannel > 4) {
718 RTE_LOG(ERR, EAL, "invalid channel number\n");
723 /* force number of ranks */
725 internal_config.force_nrank = atoi(optarg);
726 if (internal_config.force_nrank == 0 ||
727 internal_config.force_nrank > 16) {
728 RTE_LOG(ERR, EAL, "invalid rank number\n");
734 /* since message is explicitly requested by user, we
735 * write message at highest log level so it can always be seen
736 * even if info or warning messages are disabled */
737 RTE_LOG(CRIT, EAL, "RTE Version: '%s'\n", rte_version());
742 if (!strcmp(lgopts[option_index].name, OPT_NO_HUGE)) {
743 internal_config.no_hugetlbfs = 1;
745 if (!strcmp(lgopts[option_index].name, OPT_XEN_DOM0)) {
746 #ifdef RTE_LIBRTE_XEN_DOM0
747 internal_config.xen_dom0_support = 1;
749 RTE_LOG(ERR, EAL, "Can't support DPDK app "
750 "running on Dom0, please configure"
751 " RTE_LIBRTE_XEN_DOM0=y\n");
755 else if (!strcmp(lgopts[option_index].name, OPT_NO_PCI)) {
756 internal_config.no_pci = 1;
758 else if (!strcmp(lgopts[option_index].name, OPT_NO_HPET)) {
759 internal_config.no_hpet = 1;
761 else if (!strcmp(lgopts[option_index].name, OPT_VMWARE_TSC_MAP)) {
762 internal_config.vmware_tsc_map = 1;
764 else if (!strcmp(lgopts[option_index].name, OPT_NO_SHCONF)) {
765 internal_config.no_shconf = 1;
767 else if (!strcmp(lgopts[option_index].name, OPT_HUGE_DIR)) {
768 internal_config.hugepage_dir = optarg;
770 else if (!strcmp(lgopts[option_index].name, OPT_PROC_TYPE)) {
771 internal_config.process_type = eal_parse_proc_type(optarg);
773 else if (!strcmp(lgopts[option_index].name, OPT_FILE_PREFIX)) {
774 internal_config.hugefile_prefix = optarg;
776 else if (!strcmp(lgopts[option_index].name, OPT_SOCKET_MEM)) {
777 if (eal_parse_socket_mem(optarg) < 0) {
778 RTE_LOG(ERR, EAL, "invalid parameters for --"
779 OPT_SOCKET_MEM "\n");
784 else if (!strcmp(lgopts[option_index].name, OPT_USE_DEVICE)) {
785 eal_dev_whitelist_add_entry(optarg);
787 else if (!strcmp(lgopts[option_index].name, OPT_SYSLOG)) {
788 if (eal_parse_syslog(optarg) < 0) {
789 RTE_LOG(ERR, EAL, "invalid parameters for --"
795 else if (!strcmp(lgopts[option_index].name, OPT_BASE_VIRTADDR)) {
796 if (eal_parse_base_virtaddr(optarg) < 0) {
797 RTE_LOG(ERR, EAL, "invalid parameter for --"
798 OPT_BASE_VIRTADDR "\n");
803 else if (!strcmp(lgopts[option_index].name, OPT_CREATE_UIO_DEV)) {
804 internal_config.create_uio_dev = 1;
816 RTE_LOG(ERR, EAL, "coremask not specified\n");
820 if (internal_config.process_type == RTE_PROC_AUTO){
821 internal_config.process_type = eal_proc_type_detect();
823 if (internal_config.process_type == RTE_PROC_INVALID){
824 RTE_LOG(ERR, EAL, "Invalid process type specified\n");
828 if (internal_config.process_type == RTE_PROC_PRIMARY &&
829 internal_config.force_nchannel == 0) {
830 RTE_LOG(ERR, EAL, "Number of memory channels (-n) not specified\n");
834 if (index(internal_config.hugefile_prefix,'%') != NULL){
835 RTE_LOG(ERR, EAL, "Invalid char, '%%', in '"OPT_FILE_PREFIX"' option\n");
839 if (internal_config.memory > 0 && internal_config.force_sockets == 1) {
840 RTE_LOG(ERR, EAL, "Options -m and --socket-mem cannot be specified "
841 "at the same time\n");
845 /* --no-huge doesn't make sense with either -m or --socket-mem */
846 if (internal_config.no_hugetlbfs &&
847 (internal_config.memory > 0 ||
848 internal_config.force_sockets == 1)) {
849 RTE_LOG(ERR, EAL, "Options -m or --socket-mem cannot be specified "
850 "together with --no-huge!\n");
854 /* --xen-dom0 doesn't make sense with --socket-mem */
855 if (internal_config.xen_dom0_support && internal_config.force_sockets == 1) {
856 RTE_LOG(ERR, EAL, "Options --socket-mem cannot be specified "
857 "together with --xen_dom0!\n");
861 /* if no blacklist, parse a whitelist */
862 if (blacklist_index > 0) {
863 if (eal_dev_whitelist_exists()) {
864 RTE_LOG(ERR, EAL, "Error: blacklist [-b] and whitelist "
865 "[--use-device] options cannot be used at the same time\n");
869 rte_eal_pci_set_blacklist(eal_dev_blacklist, blacklist_index);
871 if (eal_dev_whitelist_exists() && eal_dev_whitelist_parse() < 0) {
872 RTE_LOG(ERR,EAL, "Error parsing whitelist[--use-device] options\n");
878 argv[optind-1] = prgname;
880 /* if no memory amounts were requested, this will result in 0 and
881 * will be overriden later, right after eal_hugepage_info_init() */
882 for (i = 0; i < RTE_MAX_NUMA_NODES; i++)
883 internal_config.memory += internal_config.socket_mem[i];
886 optind = 0; /* reset getopt lib */
891 eal_check_mem_on_local_socket(void)
893 const struct rte_memseg *ms;
896 socket_id = rte_lcore_to_socket_id(rte_config.master_lcore);
898 ms = rte_eal_get_physmem_layout();
900 for (i = 0; i < RTE_MAX_MEMSEG; i++)
901 if (ms[i].socket_id == socket_id &&
905 RTE_LOG(WARNING, EAL, "WARNING: Master core has no "
906 "memory on local socket!\n");
910 sync_func(__attribute__((unused)) void *arg)
916 rte_eal_mcfg_complete(void)
918 /* ALL shared mem_config related INIT DONE */
919 if (rte_config.process_type == RTE_PROC_PRIMARY)
920 rte_config.mem_config->magic = RTE_MAGIC;
924 * Request iopl priviledge for all RPL, returns 0 on success
927 rte_eal_iopl_init(void)
929 return iopl(HIGHEST_RPL);
932 /* Launch threads, called at application init(). */
934 rte_eal_init(int argc, char **argv)
938 static rte_atomic32_t run_once = RTE_ATOMIC32_INIT(0);
939 struct shared_driver *solib = NULL;
942 if (!rte_atomic32_test_and_set(&run_once))
945 logid = strrchr(argv[0], '/');
946 logid = strdup(logid ? logid + 1: argv[0]);
948 thread_id = pthread_self();
950 if (rte_eal_log_early_init() < 0)
951 rte_panic("Cannot init early logs\n");
953 if (rte_eal_cpu_init() < 0)
954 rte_panic("Cannot detect lcores\n");
956 fctret = eal_parse_args(argc, argv);
960 if (internal_config.no_hugetlbfs == 0 &&
961 internal_config.process_type != RTE_PROC_SECONDARY &&
962 internal_config.xen_dom0_support == 0 &&
963 eal_hugepage_info_init() < 0)
964 rte_panic("Cannot get hugepage information\n");
966 if (internal_config.memory == 0 && internal_config.force_sockets == 0) {
967 if (internal_config.no_hugetlbfs)
968 internal_config.memory = MEMSIZE_IF_NO_HUGE_PAGE;
970 internal_config.memory = eal_get_hugepage_mem_size();
973 if (internal_config.vmware_tsc_map == 1) {
974 #ifdef RTE_LIBRTE_EAL_VMWARE_TSC_MAP_SUPPORT
975 rte_cycles_vmware_tsc_map = 1;
976 RTE_LOG (DEBUG, EAL, "Using VMWARE TSC MAP, "
977 "you must have monitor_control.pseudo_perfctr = TRUE\n");
979 RTE_LOG (WARNING, EAL, "Ignoring --vmware-tsc-map because "
980 "RTE_LIBRTE_EAL_VMWARE_TSC_MAP_SUPPORT is not set\n");
984 rte_srand(rte_rdtsc());
988 if (rte_eal_iopl_init() == 0)
989 rte_config.flags |= EAL_FLG_HIGH_IOPL;
991 if (rte_eal_pci_init() < 0)
992 rte_panic("Cannot init PCI\n");
994 #ifdef RTE_LIBRTE_IVSHMEM
995 if (rte_eal_ivshmem_init() < 0)
996 rte_panic("Cannot init IVSHMEM\n");
999 if (rte_eal_memory_init() < 0)
1000 rte_panic("Cannot init memory\n");
1002 /* the directories are locked during eal_hugepage_info_init */
1003 eal_hugedirs_unlock();
1005 if (rte_eal_memzone_init() < 0)
1006 rte_panic("Cannot init memzone\n");
1008 if (rte_eal_tailqs_init() < 0)
1009 rte_panic("Cannot init tail queues for objects\n");
1011 #ifdef RTE_LIBRTE_IVSHMEM
1012 if (rte_eal_ivshmem_obj_init() < 0)
1013 rte_panic("Cannot init IVSHMEM objects\n");
1016 if (rte_eal_log_init(logid, internal_config.syslog_facility) < 0)
1017 rte_panic("Cannot init logs\n");
1019 if (rte_eal_alarm_init() < 0)
1020 rte_panic("Cannot init interrupt-handling thread\n");
1022 if (rte_eal_intr_init() < 0)
1023 rte_panic("Cannot init interrupt-handling thread\n");
1025 if (rte_eal_timer_init() < 0)
1026 rte_panic("Cannot init HPET or TSC timers\n");
1028 eal_check_mem_on_local_socket();
1030 rte_eal_mcfg_complete();
1032 if (rte_eal_non_pci_ethdev_init() < 0)
1033 rte_panic("Cannot init non-PCI eth_devs\n");
1035 TAILQ_FOREACH(solib, &solib_list, next) {
1036 solib->lib_handle = dlopen(solib->name, RTLD_NOW);
1037 if ((solib->lib_handle == NULL) && (solib->name[0] != '/')) {
1038 /* relative path: try again with "./" prefix */
1039 char sopath[PATH_MAX];
1040 snprintf(sopath, sizeof(sopath), "./%s", solib->name);
1041 solib->lib_handle = dlopen(sopath, RTLD_NOW);
1043 if (solib->lib_handle == NULL)
1044 RTE_LOG(WARNING, EAL, "%s\n", dlerror());
1047 RTE_LOG(DEBUG, EAL, "Master core %u is ready (tid=%x)\n",
1048 rte_config.master_lcore, (int)thread_id);
1050 RTE_LCORE_FOREACH_SLAVE(i) {
1053 * create communication pipes between master thread
1056 if (pipe(lcore_config[i].pipe_master2slave) < 0)
1057 rte_panic("Cannot create pipe\n");
1058 if (pipe(lcore_config[i].pipe_slave2master) < 0)
1059 rte_panic("Cannot create pipe\n");
1061 lcore_config[i].state = WAIT;
1063 /* create a thread for each lcore */
1064 ret = pthread_create(&lcore_config[i].thread_id, NULL,
1065 eal_thread_loop, NULL);
1067 rte_panic("Cannot create thread\n");
1070 eal_thread_init_master(rte_config.master_lcore);
1073 * Launch a dummy function on all slave lcores, so that master lcore
1074 * knows they are all ready when this function returns.
1076 rte_eal_mp_remote_launch(sync_func, NULL, SKIP_MASTER);
1077 rte_eal_mp_wait_lcore();
1083 enum rte_lcore_role_t
1084 rte_eal_lcore_role(unsigned lcore_id)
1086 return (rte_config.lcore_role[lcore_id]);
1089 enum rte_proc_type_t
1090 rte_eal_process_type(void)
1092 return (rte_config.process_type);
1095 int rte_eal_has_hugepages(void)
1097 return ! internal_config.no_hugetlbfs;