4 * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * * Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * * Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
17 * * Neither the name of Intel Corporation nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
49 #include <sys/queue.h>
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>
59 #include <rte_eal_memconfig.h>
60 #include <rte_per_lcore.h>
61 #include <rte_lcore.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>
69 #include <rte_common.h>
70 #include <rte_version.h>
71 #include <rte_atomic.h>
72 #include <malloc_heap.h>
73 #include <rte_eth_ring.h>
75 #include "eal_private.h"
76 #include "eal_thread.h"
77 #include "eal_internal_cfg.h"
78 #include "eal_filesystem.h"
79 #include "eal_hugepages.h"
81 #define OPT_HUGE_DIR "huge-dir"
82 #define OPT_PROC_TYPE "proc-type"
83 #define OPT_NO_SHCONF "no-shconf"
84 #define OPT_NO_HPET "no-hpet"
85 #define OPT_VMWARE_TSC_MAP "vmware-tsc-map"
86 #define OPT_NO_PCI "no-pci"
87 #define OPT_NO_HUGE "no-huge"
88 #define OPT_FILE_PREFIX "file-prefix"
89 #define OPT_SOCKET_MEM "socket-mem"
90 #define OPT_USE_DEVICE "use-device"
91 #define OPT_SYSLOG "syslog"
92 #define OPT_BASE_VIRTADDR "base-virtaddr"
93 #define OPT_XEN_DOM0 "xen-dom0"
95 #define RTE_EAL_BLACKLIST_SIZE 0x100
97 #define MEMSIZE_IF_NO_HUGE_PAGE (64ULL * 1024ULL * 1024ULL)
99 #define SOCKET_MEM_STRLEN (RTE_MAX_NUMA_NODES * 10)
101 #define HIGHEST_RPL 3
103 #define BITS_PER_HEX 4
105 #define GET_BLACKLIST_FIELD(in, fd, lim, dlm) \
110 val = strtoul((in), &end, 16); \
111 if (errno != 0 || end[0] != (dlm) || val > (lim)) \
113 (fd) = (typeof (fd))val; \
117 /* Allow the application to print its usage message too if set */
118 static rte_usage_hook_t rte_application_usage_hook = NULL;
119 /* early configuration structure, when memory config is not mmapped */
120 static struct rte_mem_config early_mem_config;
122 /* define fd variable here, because file needs to be kept open for the
123 * duration of the program, as we hold a write lock on it in the primary proc */
124 static int mem_cfg_fd = -1;
126 static struct flock wr_lock = {
128 .l_whence = SEEK_SET,
129 .l_start = offsetof(struct rte_mem_config, memseg),
130 .l_len = sizeof(early_mem_config.memseg),
133 /* Address of global and public configuration */
134 static struct rte_config rte_config = {
135 .mem_config = &early_mem_config,
138 static struct rte_pci_addr eal_dev_blacklist[RTE_EAL_BLACKLIST_SIZE];
140 /* internal configuration (per-core) */
141 struct lcore_config lcore_config[RTE_MAX_LCORE];
143 /* internal configuration */
144 struct internal_config internal_config;
146 /* used by rte_rdtsc() */
147 int rte_cycles_vmware_tsc_map;
149 /* Return a pointer to the configuration structure */
151 rte_eal_get_configuration(void)
156 /* parse a sysfs (or other) file containing one integer value */
158 eal_parse_sysfs_value(const char *filename, unsigned long *val)
164 if ((f = fopen(filename, "r")) == NULL) {
165 RTE_LOG(ERR, EAL, "%s(): cannot open sysfs value %s\n",
170 if (fgets(buf, sizeof(buf), f) == NULL) {
171 RTE_LOG(ERR, EAL, "%s(): cannot read sysfs value %s\n",
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",
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
195 rte_eal_config_create(void)
197 void *rte_mem_cfg_addr;
200 const char *pathname = eal_runtime_config_path();
202 if (internal_config.no_shconf)
206 mem_cfg_fd = open(pathname, O_RDWR | O_CREAT, 0660);
208 rte_panic("Cannot open '%s' for rte_mem_config\n", pathname);
211 retval = ftruncate(mem_cfg_fd, sizeof(*rte_config.mem_config));
214 rte_panic("Cannot resize '%s' for rte_mem_config\n", pathname);
217 retval = fcntl(mem_cfg_fd, F_SETLK, &wr_lock);
220 rte_exit(EXIT_FAILURE, "Cannot create lock on '%s'. Is another primary "
221 "process running?\n", pathname);
224 rte_mem_cfg_addr = mmap(NULL, sizeof(*rte_config.mem_config),
225 PROT_READ | PROT_WRITE, MAP_SHARED, mem_cfg_fd, 0);
227 if (rte_mem_cfg_addr == MAP_FAILED){
228 rte_panic("Cannot mmap memory for rte_config\n");
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;
234 /* attach to an existing shared memory config */
236 rte_eal_config_attach(void)
238 void *rte_mem_cfg_addr;
239 const char *pathname = eal_runtime_config_path();
241 if (internal_config.no_shconf)
245 mem_cfg_fd = open(pathname, O_RDWR);
247 rte_panic("Cannot open '%s' for rte_mem_config\n", pathname);
250 rte_mem_cfg_addr = mmap(NULL, sizeof(*rte_config.mem_config),
251 PROT_READ | PROT_WRITE, MAP_SHARED, mem_cfg_fd, 0);
253 if (rte_mem_cfg_addr == MAP_FAILED)
254 rte_panic("Cannot mmap memory for rte_config\n");
256 rte_config.mem_config = (struct rte_mem_config *) rte_mem_cfg_addr;
259 /* Detect if we are a primary or a secondary process */
260 static enum rte_proc_type_t
261 eal_proc_type_detect(void)
263 enum rte_proc_type_t ptype = RTE_PROC_PRIMARY;
264 const char *pathname = eal_runtime_config_path();
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;
273 RTE_LOG(INFO, EAL, "Auto-detected process type: %s\n",
274 ptype == RTE_PROC_PRIMARY ? "PRIMARY" : "SECONDARY");
279 /* Sets up rte_config structure with the pointer to shared memory config.*/
281 rte_config_init(void)
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 */
289 switch (rte_config.process_type){
290 case RTE_PROC_PRIMARY:
291 rte_eal_config_create();
293 case RTE_PROC_SECONDARY:
294 rte_eal_config_attach();
295 rte_eal_mcfg_wait_complete(rte_config.mem_config);
298 case RTE_PROC_INVALID:
299 rte_panic("Invalid process type\n");
303 /* Unlocks hugepage directories that were locked by eal_hugepage_info_init */
305 eal_hugedirs_unlock(void)
309 for (i = 0; i < MAX_HUGEPAGE_SIZES; i++)
311 /* skip uninitialized */
312 if (internal_config.hugepage_info[i].lock_descriptor < 0)
314 /* unlock hugepage file */
315 flock(internal_config.hugepage_info[i].lock_descriptor, LOCK_UN);
316 close(internal_config.hugepage_info[i].lock_descriptor);
317 /* reset the field */
318 internal_config.hugepage_info[i].lock_descriptor = -1;
324 eal_usage(const char *prgname)
326 printf("\nUsage: %s -c COREMASK -n NUM [-m NB] [-r NUM] [-b <domain:bus:devid.func>]"
327 "[--proc-type primary|secondary|auto] \n\n"
329 " -c COREMASK : A hexadecimal bitmask of cores to run on\n"
330 " -n NUM : Number of memory channels\n"
331 " -v : Display version information on startup\n"
332 " -b <domain:bus:devid.func>: to prevent EAL from using specified "
334 " (multiple -b options are allowed)\n"
335 " -m MB : memory to allocate (see also --"OPT_SOCKET_MEM")\n"
336 " -r NUM : force number of memory ranks (don't detect)\n"
337 " --"OPT_XEN_DOM0" : support application running on Xen Domain0 "
338 "without hugetlbfs\n"
339 " --"OPT_SYSLOG" : set syslog facility\n"
340 " --"OPT_SOCKET_MEM" : memory to allocate on specific \n"
341 " sockets (use comma separated values)\n"
342 " --"OPT_HUGE_DIR" : directory where hugetlbfs is mounted\n"
343 " --"OPT_PROC_TYPE" : type of this process\n"
344 " --"OPT_FILE_PREFIX": prefix for hugepage filenames\n"
345 " --"OPT_USE_DEVICE": use the specified ethernet device(s) only. "
346 "Use comma-separate <[domain:]bus:devid.func> values.\n"
347 " [NOTE: Cannot be used with -b option]\n"
348 " --"OPT_VMWARE_TSC_MAP": use VMware TSC map instead of "
350 " --"OPT_BASE_VIRTADDR": specify base virtual address\n"
351 "\nEAL options for DEBUG use only:\n"
352 " --"OPT_NO_HUGE" : use malloc instead of hugetlbfs\n"
353 " --"OPT_NO_PCI" : disable pci\n"
354 " --"OPT_NO_HPET" : disable hpet\n"
355 " --"OPT_NO_SHCONF": no shared config (mmap'd files)\n"
358 /* Allow the application to print its usage message too if hook is set */
359 if ( rte_application_usage_hook ) {
360 printf("===== Application Usage =====\n\n");
361 rte_application_usage_hook(prgname);
365 /* Set a per-application usage message */
367 rte_set_application_usage_hook( rte_usage_hook_t usage_func )
369 rte_usage_hook_t old_func;
371 /* Will be NULL on the first call to denote the last usage routine. */
372 old_func = rte_application_usage_hook;
373 rte_application_usage_hook = usage_func;
379 * Parse the coremask given as argument (hexadecimal string) and fill
380 * the global configuration (core role and core count) with the parsed
383 static int xdigit2val(unsigned char c)
395 eal_parse_coremask(const char *coremask)
397 struct rte_config *cfg = rte_eal_get_configuration();
403 if (coremask == NULL)
405 /* Remove all blank characters ahead and after .
406 * Remove 0x/0X if exists.
408 while (isblank(*coremask))
410 if (coremask[0] == '0' && ((coremask[1] == 'x')
411 || (coremask[1] == 'X')) )
413 i = strnlen(coremask, PATH_MAX);
414 while ((i > 0) && isblank(coremask[i - 1]))
419 for (i = i - 1; i >= 0 && idx < RTE_MAX_LCORE; i--) {
421 if (isxdigit(c) == 0) {
422 /* invalid characters */
426 for(j = 0; j < BITS_PER_HEX && idx < RTE_MAX_LCORE; j++, idx++) {
428 cfg->lcore_role[idx] = ROLE_RTE;
430 cfg->master_lcore = idx;
433 cfg->lcore_role[idx] = ROLE_OFF;
438 if(coremask[i] != '0')
440 for(; idx < RTE_MAX_LCORE; idx++)
441 cfg->lcore_role[idx] = ROLE_OFF;
448 eal_parse_syslog(const char *facility)
455 { "auth", LOG_AUTH },
456 { "cron", LOG_CRON },
457 { "daemon", LOG_DAEMON },
459 { "kern", LOG_KERN },
461 { "mail", LOG_MAIL },
462 { "news", LOG_NEWS },
463 { "syslog", LOG_SYSLOG },
464 { "user", LOG_USER },
465 { "uucp", LOG_UUCP },
466 { "local0", LOG_LOCAL0 },
467 { "local1", LOG_LOCAL1 },
468 { "local2", LOG_LOCAL2 },
469 { "local3", LOG_LOCAL3 },
470 { "local4", LOG_LOCAL4 },
471 { "local5", LOG_LOCAL5 },
472 { "local6", LOG_LOCAL6 },
473 { "local7", LOG_LOCAL7 },
477 for (i = 0; map[i].name; i++) {
478 if (!strcmp(facility, map[i].name)) {
479 internal_config.syslog_facility = map[i].value;
487 eal_parse_socket_mem(char *socket_mem)
489 char * arg[RTE_MAX_NUMA_NODES];
492 uint64_t total_mem = 0;
494 len = strnlen(socket_mem, SOCKET_MEM_STRLEN);
495 if (len == SOCKET_MEM_STRLEN) {
496 RTE_LOG(ERR, EAL, "--socket-mem is too long\n");
500 /* all other error cases will be caught later */
501 if (!isdigit(socket_mem[len-1]))
504 /* split the optarg into separate socket values */
505 arg_num = rte_strsplit(socket_mem, len,
506 arg, RTE_MAX_NUMA_NODES, ',');
508 /* if split failed, or 0 arguments */
512 internal_config.force_sockets = 1;
514 /* parse each defined socket option */
516 for (i = 0; i < arg_num; i++) {
518 internal_config.socket_mem[i] = strtoull(arg[i], &end, 10);
520 /* check for invalid input */
522 (arg[i][0] == '\0') || (end == NULL) || (*end != '\0'))
524 internal_config.socket_mem[i] *= 1024ULL;
525 internal_config.socket_mem[i] *= 1024ULL;
526 total_mem += internal_config.socket_mem[i];
529 /* check if we have a positive amount of total memory */
537 eal_parse_base_virtaddr(const char *arg)
542 addr = strtoull(arg, &end, 16);
544 /* check for errors */
545 if ((errno != 0) || (arg[0] == '\0') || end == NULL || (*end != '\0'))
548 /* make sure we don't exceed 32-bit boundary on 32-bit target */
549 #ifndef RTE_ARCH_X86_64
550 if (addr >= UINTPTR_MAX)
554 /* align the addr on 2M boundary */
555 addr = RTE_PTR_ALIGN_CEIL(addr, RTE_PGSIZE_2M);
557 internal_config.base_virtaddr = (uintptr_t) addr;
562 eal_get_hugepage_mem_size(void)
567 for (i = 0; i < internal_config.num_hugepage_sizes; i++) {
568 struct hugepage_info *hpi = &internal_config.hugepage_info[i];
569 if (hpi->hugedir != NULL) {
570 for (j = 0; j < RTE_MAX_NUMA_NODES; j++) {
571 size += hpi->hugepage_sz * hpi->num_pages[j];
576 return (size < SIZE_MAX) ? (size_t)(size) : SIZE_MAX;
579 static enum rte_proc_type_t
580 eal_parse_proc_type(const char *arg)
582 if (strncasecmp(arg, "primary", sizeof("primary")) == 0)
583 return RTE_PROC_PRIMARY;
584 if (strncasecmp(arg, "secondary", sizeof("secondary")) == 0)
585 return RTE_PROC_SECONDARY;
586 if (strncasecmp(arg, "auto", sizeof("auto")) == 0)
587 return RTE_PROC_AUTO;
589 return RTE_PROC_INVALID;
593 eal_parse_blacklist_opt(const char *optarg, size_t idx)
595 if (idx >= sizeof (eal_dev_blacklist) / sizeof (eal_dev_blacklist[0])) {
596 RTE_LOG(ERR, EAL, "%s - too many devices to blacklist...\n", optarg);
598 } else if (eal_parse_pci_DomBDF(optarg, eal_dev_blacklist + idx) < 0 &&
599 eal_parse_pci_BDF(optarg, eal_dev_blacklist + idx) < 0) {
600 RTE_LOG(ERR, EAL, "%s - invalid device to blacklist...\n", optarg);
608 /* Parse the argument given in the command line of the application */
610 eal_parse_args(int argc, char **argv)
616 ssize_t blacklist_index = 0;
617 char *prgname = argv[0];
618 static struct option lgopts[] = {
619 {OPT_NO_HUGE, 0, 0, 0},
620 {OPT_NO_PCI, 0, 0, 0},
621 {OPT_NO_HPET, 0, 0, 0},
622 {OPT_VMWARE_TSC_MAP, 0, 0, 0},
623 {OPT_HUGE_DIR, 1, 0, 0},
624 {OPT_NO_SHCONF, 0, 0, 0},
625 {OPT_PROC_TYPE, 1, 0, 0},
626 {OPT_FILE_PREFIX, 1, 0, 0},
627 {OPT_SOCKET_MEM, 1, 0, 0},
628 {OPT_USE_DEVICE, 1, 0, 0},
629 {OPT_SYSLOG, 1, NULL, 0},
630 {OPT_BASE_VIRTADDR, 1, 0, 0},
631 {OPT_XEN_DOM0, 0, 0, 0},
637 internal_config.memory = 0;
638 internal_config.force_nrank = 0;
639 internal_config.force_nchannel = 0;
640 internal_config.hugefile_prefix = HUGEFILE_PREFIX_DEFAULT;
641 internal_config.hugepage_dir = NULL;
642 internal_config.force_sockets = 0;
643 internal_config.syslog_facility = LOG_DAEMON;
644 internal_config.xen_dom0_support = 0;
645 #ifdef RTE_LIBEAL_USE_HPET
646 internal_config.no_hpet = 0;
648 internal_config.no_hpet = 1;
650 /* zero out the NUMA config */
651 for (i = 0; i < RTE_MAX_NUMA_NODES; i++)
652 internal_config.socket_mem[i] = 0;
654 /* zero out hugedir descriptors */
655 for (i = 0; i < MAX_HUGEPAGE_SIZES; i++)
656 internal_config.hugepage_info[i].lock_descriptor = -1;
658 internal_config.vmware_tsc_map = 0;
659 internal_config.base_virtaddr = 0;
661 while ((opt = getopt_long(argc, argvopt, "b:c:m:n:r:v",
662 lgopts, &option_index)) != EOF) {
667 if ((blacklist_index = eal_parse_blacklist_opt(optarg,
668 blacklist_index)) < 0) {
675 if (eal_parse_coremask(optarg) < 0) {
676 RTE_LOG(ERR, EAL, "invalid coremask\n");
684 internal_config.memory = atoi(optarg);
685 internal_config.memory *= 1024ULL;
686 internal_config.memory *= 1024ULL;
688 /* force number of channels */
690 internal_config.force_nchannel = atoi(optarg);
691 if (internal_config.force_nchannel == 0 ||
692 internal_config.force_nchannel > 4) {
693 RTE_LOG(ERR, EAL, "invalid channel number\n");
698 /* force number of ranks */
700 internal_config.force_nrank = atoi(optarg);
701 if (internal_config.force_nrank == 0 ||
702 internal_config.force_nrank > 16) {
703 RTE_LOG(ERR, EAL, "invalid rank number\n");
709 /* since message is explicitly requested by user, we
710 * write message at highest log level so it can always be seen
711 * even if info or warning messages are disabled */
712 RTE_LOG(CRIT, EAL, "RTE Version: '%s'\n", rte_version());
717 if (!strcmp(lgopts[option_index].name, OPT_NO_HUGE)) {
718 internal_config.no_hugetlbfs = 1;
720 if (!strcmp(lgopts[option_index].name, OPT_XEN_DOM0)) {
721 #ifdef RTE_LIBRTE_XEN_DOM0
722 internal_config.xen_dom0_support = 1;
724 RTE_LOG(ERR, EAL, "Can't support DPDK app "
725 "running on Dom0, please configure"
726 " RTE_LIBRTE_XEN_DOM0=y\n");
730 else if (!strcmp(lgopts[option_index].name, OPT_NO_PCI)) {
731 internal_config.no_pci = 1;
733 else if (!strcmp(lgopts[option_index].name, OPT_NO_HPET)) {
734 internal_config.no_hpet = 1;
736 else if (!strcmp(lgopts[option_index].name, OPT_VMWARE_TSC_MAP)) {
737 internal_config.vmware_tsc_map = 1;
739 else if (!strcmp(lgopts[option_index].name, OPT_NO_SHCONF)) {
740 internal_config.no_shconf = 1;
742 else if (!strcmp(lgopts[option_index].name, OPT_HUGE_DIR)) {
743 internal_config.hugepage_dir = optarg;
745 else if (!strcmp(lgopts[option_index].name, OPT_PROC_TYPE)) {
746 internal_config.process_type = eal_parse_proc_type(optarg);
748 else if (!strcmp(lgopts[option_index].name, OPT_FILE_PREFIX)) {
749 internal_config.hugefile_prefix = optarg;
751 else if (!strcmp(lgopts[option_index].name, OPT_SOCKET_MEM)) {
752 if (eal_parse_socket_mem(optarg) < 0) {
753 RTE_LOG(ERR, EAL, "invalid parameters for --"
754 OPT_SOCKET_MEM "\n");
759 else if (!strcmp(lgopts[option_index].name, OPT_USE_DEVICE)) {
760 eal_dev_whitelist_add_entry(optarg);
762 else if (!strcmp(lgopts[option_index].name, OPT_SYSLOG)) {
763 if (eal_parse_syslog(optarg) < 0) {
764 RTE_LOG(ERR, EAL, "invalid parameters for --"
770 else if (!strcmp(lgopts[option_index].name, OPT_BASE_VIRTADDR)) {
771 if (eal_parse_base_virtaddr(optarg) < 0) {
772 RTE_LOG(ERR, EAL, "invalid parameter for --"
773 OPT_BASE_VIRTADDR "\n");
788 RTE_LOG(ERR, EAL, "coremask not specified\n");
792 if (internal_config.process_type == RTE_PROC_AUTO){
793 internal_config.process_type = eal_proc_type_detect();
795 if (internal_config.process_type == RTE_PROC_INVALID){
796 RTE_LOG(ERR, EAL, "Invalid process type specified\n");
800 if (internal_config.process_type == RTE_PROC_PRIMARY &&
801 internal_config.force_nchannel == 0) {
802 RTE_LOG(ERR, EAL, "Number of memory channels (-n) not specified\n");
806 if (index(internal_config.hugefile_prefix,'%') != NULL){
807 RTE_LOG(ERR, EAL, "Invalid char, '%%', in '"OPT_FILE_PREFIX"' option\n");
811 if (internal_config.memory > 0 && internal_config.force_sockets == 1) {
812 RTE_LOG(ERR, EAL, "Options -m and --socket-mem cannot be specified "
813 "at the same time\n");
817 /* --no-huge doesn't make sense with either -m or --socket-mem */
818 if (internal_config.no_hugetlbfs &&
819 (internal_config.memory > 0 ||
820 internal_config.force_sockets == 1)) {
821 RTE_LOG(ERR, EAL, "Options -m or --socket-mem cannot be specified "
822 "together with --no-huge!\n");
826 /* --xen-dom0 doesn't make sense with --socket-mem */
827 if (internal_config.xen_dom0_support && internal_config.force_sockets == 1) {
828 RTE_LOG(ERR, EAL, "Options --socket-mem cannot be specified "
829 "together with --xen_dom0!\n");
833 /* if no blacklist, parse a whitelist */
834 if (blacklist_index > 0) {
835 if (eal_dev_whitelist_exists()) {
836 RTE_LOG(ERR, EAL, "Error: blacklist [-b] and whitelist "
837 "[--use-device] options cannot be used at the same time\n");
841 rte_eal_pci_set_blacklist(eal_dev_blacklist, blacklist_index);
843 if (eal_dev_whitelist_exists() && eal_dev_whitelist_parse() < 0) {
844 RTE_LOG(ERR,EAL, "Error parsing whitelist[--use-device] options\n");
850 argv[optind-1] = prgname;
852 /* if no memory amounts were requested, this will result in 0 and
853 * will be overriden later, right after eal_hugepage_info_init() */
854 for (i = 0; i < RTE_MAX_NUMA_NODES; i++)
855 internal_config.memory += internal_config.socket_mem[i];
858 optind = 0; /* reset getopt lib */
863 eal_check_mem_on_local_socket(void)
865 const struct rte_memseg *ms;
868 socket_id = rte_lcore_to_socket_id(rte_config.master_lcore);
870 ms = rte_eal_get_physmem_layout();
872 for (i = 0; i < RTE_MAX_MEMSEG; i++)
873 if (ms[i].socket_id == socket_id &&
877 RTE_LOG(WARNING, EAL, "WARNING: Master core has no "
878 "memory on local socket!\n");
882 sync_func(__attribute__((unused)) void *arg)
888 rte_eal_mcfg_complete(void)
890 /* ALL shared mem_config related INIT DONE */
891 if (rte_config.process_type == RTE_PROC_PRIMARY)
892 rte_config.mem_config->magic = RTE_MAGIC;
896 * Request iopl priviledge for all RPL, returns 0 on success
899 rte_eal_iopl_init(void)
901 return iopl(HIGHEST_RPL);
904 /* Launch threads, called at application init(). */
906 rte_eal_init(int argc, char **argv)
910 static rte_atomic32_t run_once = RTE_ATOMIC32_INIT(0);
912 if (!rte_atomic32_test_and_set(&run_once))
915 thread_id = pthread_self();
917 if (rte_eal_log_early_init() < 0)
918 rte_panic("Cannot init early logs\n");
920 fctret = eal_parse_args(argc, argv);
924 if (internal_config.no_hugetlbfs == 0 &&
925 internal_config.process_type != RTE_PROC_SECONDARY &&
926 internal_config.xen_dom0_support == 0 &&
927 eal_hugepage_info_init() < 0)
928 rte_panic("Cannot get hugepage information\n");
930 if (internal_config.memory == 0 && internal_config.force_sockets == 0) {
931 if (internal_config.no_hugetlbfs)
932 internal_config.memory = MEMSIZE_IF_NO_HUGE_PAGE;
934 internal_config.memory = eal_get_hugepage_mem_size();
937 if (internal_config.vmware_tsc_map == 1) {
938 #ifdef RTE_LIBRTE_EAL_VMWARE_TSC_MAP_SUPPORT
939 rte_cycles_vmware_tsc_map = 1;
940 RTE_LOG (DEBUG, EAL, "Using VMWARE TSC MAP, "
941 "you must have monitor_control.pseudo_perfctr = TRUE\n");
943 RTE_LOG (WARNING, EAL, "Ignoring --vmware-tsc-map because "
944 "RTE_LIBRTE_EAL_VMWARE_TSC_MAP_SUPPORT is not set\n");
948 rte_srand(rte_rdtsc());
952 if (rte_eal_iopl_init() == 0)
953 rte_config.flags |= EAL_FLG_HIGH_IOPL;
955 if (rte_eal_cpu_init() < 0)
956 rte_panic("Cannot detect lcores\n");
958 if (rte_eal_pci_init() < 0)
959 rte_panic("Cannot init PCI\n");
961 #ifdef RTE_LIBRTE_IVSHMEM
962 if (rte_eal_ivshmem_init() < 0)
963 rte_panic("Cannot init IVSHMEM\n");
966 if (rte_eal_memory_init() < 0)
967 rte_panic("Cannot init memory\n");
969 /* the directories are locked during eal_hugepage_info_init */
970 eal_hugedirs_unlock();
972 if (rte_eal_memzone_init() < 0)
973 rte_panic("Cannot init memzone\n");
975 if (rte_eal_tailqs_init() < 0)
976 rte_panic("Cannot init tail queues for objects\n");
978 #ifdef RTE_LIBRTE_IVSHMEM
979 if (rte_eal_ivshmem_obj_init() < 0)
980 rte_panic("Cannot init IVSHMEM objects\n");
983 if (rte_eal_log_init(argv[0], internal_config.syslog_facility) < 0)
984 rte_panic("Cannot init logs\n");
986 if (rte_eal_alarm_init() < 0)
987 rte_panic("Cannot init interrupt-handling thread\n");
989 if (rte_eal_intr_init() < 0)
990 rte_panic("Cannot init interrupt-handling thread\n");
992 if (rte_eal_timer_init() < 0)
993 rte_panic("Cannot init HPET or TSC timers\n");
995 RTE_LOG(DEBUG, EAL, "Master core %u is ready (tid=%x)\n",
996 rte_config.master_lcore, (int)thread_id);
998 eal_check_mem_on_local_socket();
1000 rte_eal_mcfg_complete();
1002 if (rte_eal_non_pci_ethdev_init() < 0)
1003 rte_panic("Cannot init non-PCI eth_devs\n");
1005 RTE_LCORE_FOREACH_SLAVE(i) {
1008 * create communication pipes between master thread
1011 if (pipe(lcore_config[i].pipe_master2slave) < 0)
1012 rte_panic("Cannot create pipe\n");
1013 if (pipe(lcore_config[i].pipe_slave2master) < 0)
1014 rte_panic("Cannot create pipe\n");
1016 lcore_config[i].state = WAIT;
1018 /* create a thread for each lcore */
1019 ret = pthread_create(&lcore_config[i].thread_id, NULL,
1020 eal_thread_loop, NULL);
1022 rte_panic("Cannot create thread\n");
1025 eal_thread_init_master(rte_config.master_lcore);
1028 * Launch a dummy function on all slave lcores, so that master lcore
1029 * knows they are all ready when this function returns.
1031 rte_eal_mp_remote_launch(sync_func, NULL, SKIP_MASTER);
1032 rte_eal_mp_wait_lcore();
1038 enum rte_lcore_role_t
1039 rte_eal_lcore_role(unsigned lcore_id)
1041 return (rte_config.lcore_role[lcore_id]);
1044 enum rte_proc_type_t
1045 rte_eal_process_type(void)
1047 return (rte_config.process_type);