4 * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
5 * Copyright(c) 2012-2014 6WIND S.A.
8 * Redistribution and use in source and binary forms, with or without
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
24 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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30 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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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>
80 #include "eal_private.h"
81 #include "eal_thread.h"
82 #include "eal_internal_cfg.h"
83 #include "eal_filesystem.h"
84 #include "eal_hugepages.h"
86 #define OPT_HUGE_DIR "huge-dir"
87 #define OPT_PROC_TYPE "proc-type"
88 #define OPT_NO_SHCONF "no-shconf"
89 #define OPT_NO_HPET "no-hpet"
90 #define OPT_VMWARE_TSC_MAP "vmware-tsc-map"
91 #define OPT_NO_PCI "no-pci"
92 #define OPT_NO_HUGE "no-huge"
93 #define OPT_FILE_PREFIX "file-prefix"
94 #define OPT_SOCKET_MEM "socket-mem"
95 #define OPT_USE_DEVICE "use-device"
96 #define OPT_PCI_WHITELIST "pci-whitelist"
97 #define OPT_PCI_BLACKLIST "pci-blacklist"
98 #define OPT_VDEV "vdev"
99 #define OPT_SYSLOG "syslog"
100 #define OPT_BASE_VIRTADDR "base-virtaddr"
101 #define OPT_XEN_DOM0 "xen-dom0"
102 #define OPT_CREATE_UIO_DEV "create-uio-dev"
103 #define OPT_VFIO_INTR "vfio-intr"
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)
214 /* map the config before hugepage address so that we don't waste a page */
215 if (internal_config.base_virtaddr != 0)
216 rte_mem_cfg_addr = (void *)
217 RTE_ALIGN_FLOOR(internal_config.base_virtaddr -
218 sizeof(struct rte_mem_config), sysconf(_SC_PAGE_SIZE));
220 rte_mem_cfg_addr = NULL;
223 mem_cfg_fd = open(pathname, O_RDWR | O_CREAT, 0660);
225 rte_panic("Cannot open '%s' for rte_mem_config\n", pathname);
228 retval = ftruncate(mem_cfg_fd, sizeof(*rte_config.mem_config));
231 rte_panic("Cannot resize '%s' for rte_mem_config\n", pathname);
234 retval = fcntl(mem_cfg_fd, F_SETLK, &wr_lock);
237 rte_exit(EXIT_FAILURE, "Cannot create lock on '%s'. Is another primary "
238 "process running?\n", pathname);
241 rte_mem_cfg_addr = mmap(rte_mem_cfg_addr, sizeof(*rte_config.mem_config),
242 PROT_READ | PROT_WRITE, MAP_SHARED, mem_cfg_fd, 0);
244 if (rte_mem_cfg_addr == MAP_FAILED){
245 rte_panic("Cannot mmap memory for rte_config\n");
247 memcpy(rte_mem_cfg_addr, &early_mem_config, sizeof(early_mem_config));
248 rte_config.mem_config = (struct rte_mem_config *) rte_mem_cfg_addr;
250 /* store address of the config in the config itself so that secondary
251 * processes could later map the config into this exact location */
252 rte_config.mem_config->mem_cfg_addr = (uintptr_t) rte_mem_cfg_addr;
256 /* attach to an existing shared memory config */
258 rte_eal_config_attach(void)
260 struct rte_mem_config *mem_config;
262 const char *pathname = eal_runtime_config_path();
264 if (internal_config.no_shconf)
268 mem_cfg_fd = open(pathname, O_RDWR);
270 rte_panic("Cannot open '%s' for rte_mem_config\n", pathname);
273 /* map it as read-only first */
274 mem_config = (struct rte_mem_config *) mmap(NULL, sizeof(*mem_config),
275 PROT_READ, MAP_SHARED, mem_cfg_fd, 0);
276 if (mem_config == MAP_FAILED)
277 rte_panic("Cannot mmap memory for rte_config\n");
279 rte_config.mem_config = mem_config;
282 /* reattach the shared config at exact memory location primary process has it */
284 rte_eal_config_reattach(void)
286 struct rte_mem_config *mem_config;
287 void *rte_mem_cfg_addr;
289 if (internal_config.no_shconf)
292 /* save the address primary process has mapped shared config to */
293 rte_mem_cfg_addr = (void *) (uintptr_t) rte_config.mem_config->mem_cfg_addr;
295 /* unmap original config */
296 munmap(rte_config.mem_config, sizeof(struct rte_mem_config));
298 /* remap the config at proper address */
299 mem_config = (struct rte_mem_config *) mmap(rte_mem_cfg_addr,
300 sizeof(*mem_config), PROT_READ | PROT_WRITE, MAP_SHARED,
303 if (mem_config == MAP_FAILED || mem_config != rte_mem_cfg_addr)
304 rte_panic("Cannot mmap memory for rte_config\n");
306 rte_config.mem_config = mem_config;
309 /* Detect if we are a primary or a secondary process */
310 static enum rte_proc_type_t
311 eal_proc_type_detect(void)
313 enum rte_proc_type_t ptype = RTE_PROC_PRIMARY;
314 const char *pathname = eal_runtime_config_path();
316 /* if we can open the file but not get a write-lock we are a secondary
317 * process. NOTE: if we get a file handle back, we keep that open
318 * and don't close it to prevent a race condition between multiple opens */
319 if (((mem_cfg_fd = open(pathname, O_RDWR)) >= 0) &&
320 (fcntl(mem_cfg_fd, F_SETLK, &wr_lock) < 0))
321 ptype = RTE_PROC_SECONDARY;
323 RTE_LOG(INFO, EAL, "Auto-detected process type: %s\n",
324 ptype == RTE_PROC_PRIMARY ? "PRIMARY" : "SECONDARY");
329 /* Sets up rte_config structure with the pointer to shared memory config.*/
331 rte_config_init(void)
333 rte_config.process_type = (internal_config.process_type == RTE_PROC_AUTO) ?
334 eal_proc_type_detect() : /* for auto, detect the type */
335 internal_config.process_type; /* otherwise use what's already set */
337 switch (rte_config.process_type){
338 case RTE_PROC_PRIMARY:
339 rte_eal_config_create();
341 case RTE_PROC_SECONDARY:
342 rte_eal_config_attach();
343 rte_eal_mcfg_wait_complete(rte_config.mem_config);
344 rte_eal_config_reattach();
347 case RTE_PROC_INVALID:
348 rte_panic("Invalid process type\n");
352 /* Unlocks hugepage directories that were locked by eal_hugepage_info_init */
354 eal_hugedirs_unlock(void)
358 for (i = 0; i < MAX_HUGEPAGE_SIZES; i++)
360 /* skip uninitialized */
361 if (internal_config.hugepage_info[i].lock_descriptor < 0)
363 /* unlock hugepage file */
364 flock(internal_config.hugepage_info[i].lock_descriptor, LOCK_UN);
365 close(internal_config.hugepage_info[i].lock_descriptor);
366 /* reset the field */
367 internal_config.hugepage_info[i].lock_descriptor = -1;
373 eal_usage(const char *prgname)
375 printf("\nUsage: %s -c COREMASK -n NUM [-m NB] [-r NUM] [-b <domain:bus:devid.func>]"
376 "[--proc-type primary|secondary|auto] \n\n"
378 " -c COREMASK : A hexadecimal bitmask of cores to run on\n"
379 " -n NUM : Number of memory channels\n"
380 " -v : Display version information on startup\n"
381 " -d LIB.so : add driver (can be used multiple times)\n"
382 " -m MB : memory to allocate (see also --"OPT_SOCKET_MEM")\n"
383 " -r NUM : force number of memory ranks (don't detect)\n"
384 " --"OPT_XEN_DOM0" : support application running on Xen Domain0 "
385 "without hugetlbfs\n"
386 " --"OPT_SYSLOG" : set syslog facility\n"
387 " --"OPT_SOCKET_MEM" : memory to allocate on specific \n"
388 " sockets (use comma separated values)\n"
389 " --"OPT_HUGE_DIR" : directory where hugetlbfs is mounted\n"
390 " --"OPT_PROC_TYPE" : type of this process\n"
391 " --"OPT_FILE_PREFIX": prefix for hugepage filenames\n"
392 " --"OPT_PCI_BLACKLIST", -b: add a PCI device in black list.\n"
393 " Prevent EAL from using this PCI device. The argument\n"
394 " format is <domain:bus:devid.func>.\n"
395 " --"OPT_PCI_WHITELIST", -w: add a PCI device in white list.\n"
396 " Only use the specified PCI devices. The argument format\n"
397 " is <[domain:]bus:devid.func>. This option can be present\n"
398 " several times (once per device).\n"
399 " [NOTE: PCI whitelist cannot be used with -b option]\n"
400 " --"OPT_VDEV": add a virtual device.\n"
401 " The argument format is <driver><id>[,key=val,...]\n"
402 " (ex: --vdev=eth_pcap0,iface=eth2).\n"
403 " --"OPT_VMWARE_TSC_MAP": use VMware TSC map instead of native RDTSC\n"
404 " --"OPT_BASE_VIRTADDR": specify base virtual address\n"
405 " --"OPT_VFIO_INTR": specify desired interrupt mode for VFIO "
406 "(legacy|msi|msix)\n"
407 " --"OPT_CREATE_UIO_DEV": create /dev/uioX (usually done by hotplug)\n"
408 "\nEAL options for DEBUG use only:\n"
409 " --"OPT_NO_HUGE" : use malloc instead of hugetlbfs\n"
410 " --"OPT_NO_PCI" : disable pci\n"
411 " --"OPT_NO_HPET" : disable hpet\n"
412 " --"OPT_NO_SHCONF": no shared config (mmap'd files)\n"
415 /* Allow the application to print its usage message too if hook is set */
416 if ( rte_application_usage_hook ) {
417 printf("===== Application Usage =====\n\n");
418 rte_application_usage_hook(prgname);
422 /* Set a per-application usage message */
424 rte_set_application_usage_hook( rte_usage_hook_t usage_func )
426 rte_usage_hook_t old_func;
428 /* Will be NULL on the first call to denote the last usage routine. */
429 old_func = rte_application_usage_hook;
430 rte_application_usage_hook = usage_func;
436 * Parse the coremask given as argument (hexadecimal string) and fill
437 * the global configuration (core role and core count) with the parsed
440 static int xdigit2val(unsigned char c)
452 eal_parse_coremask(const char *coremask)
454 struct rte_config *cfg = rte_eal_get_configuration();
460 if (coremask == NULL)
462 /* Remove all blank characters ahead and after .
463 * Remove 0x/0X if exists.
465 while (isblank(*coremask))
467 if (coremask[0] == '0' && ((coremask[1] == 'x')
468 || (coremask[1] == 'X')) )
470 i = strnlen(coremask, PATH_MAX);
471 while ((i > 0) && isblank(coremask[i - 1]))
476 for (i = i - 1; i >= 0 && idx < RTE_MAX_LCORE; i--) {
478 if (isxdigit(c) == 0) {
479 /* invalid characters */
483 for(j = 0; j < BITS_PER_HEX && idx < RTE_MAX_LCORE; j++, idx++) {
485 if (!lcore_config[idx].detected) {
486 RTE_LOG(ERR, EAL, "lcore %u "
487 "unavailable\n", idx);
490 cfg->lcore_role[idx] = ROLE_RTE;
492 cfg->master_lcore = idx;
495 cfg->lcore_role[idx] = ROLE_OFF;
500 if(coremask[i] != '0')
502 for(; idx < RTE_MAX_LCORE; idx++)
503 cfg->lcore_role[idx] = ROLE_OFF;
506 /* Update the count of enabled logical cores of the EAL configuration */
507 cfg->lcore_count = count;
512 eal_parse_syslog(const char *facility)
519 { "auth", LOG_AUTH },
520 { "cron", LOG_CRON },
521 { "daemon", LOG_DAEMON },
523 { "kern", LOG_KERN },
525 { "mail", LOG_MAIL },
526 { "news", LOG_NEWS },
527 { "syslog", LOG_SYSLOG },
528 { "user", LOG_USER },
529 { "uucp", LOG_UUCP },
530 { "local0", LOG_LOCAL0 },
531 { "local1", LOG_LOCAL1 },
532 { "local2", LOG_LOCAL2 },
533 { "local3", LOG_LOCAL3 },
534 { "local4", LOG_LOCAL4 },
535 { "local5", LOG_LOCAL5 },
536 { "local6", LOG_LOCAL6 },
537 { "local7", LOG_LOCAL7 },
541 for (i = 0; map[i].name; i++) {
542 if (!strcmp(facility, map[i].name)) {
543 internal_config.syslog_facility = map[i].value;
551 eal_parse_socket_mem(char *socket_mem)
553 char * arg[RTE_MAX_NUMA_NODES];
556 uint64_t total_mem = 0;
558 len = strnlen(socket_mem, SOCKET_MEM_STRLEN);
559 if (len == SOCKET_MEM_STRLEN) {
560 RTE_LOG(ERR, EAL, "--socket-mem is too long\n");
564 /* all other error cases will be caught later */
565 if (!isdigit(socket_mem[len-1]))
568 /* split the optarg into separate socket values */
569 arg_num = rte_strsplit(socket_mem, len,
570 arg, RTE_MAX_NUMA_NODES, ',');
572 /* if split failed, or 0 arguments */
576 internal_config.force_sockets = 1;
578 /* parse each defined socket option */
580 for (i = 0; i < arg_num; i++) {
582 internal_config.socket_mem[i] = strtoull(arg[i], &end, 10);
584 /* check for invalid input */
586 (arg[i][0] == '\0') || (end == NULL) || (*end != '\0'))
588 internal_config.socket_mem[i] *= 1024ULL;
589 internal_config.socket_mem[i] *= 1024ULL;
590 total_mem += internal_config.socket_mem[i];
593 /* check if we have a positive amount of total memory */
601 eal_parse_base_virtaddr(const char *arg)
607 addr = strtoull(arg, &end, 16);
609 /* check for errors */
610 if ((errno != 0) || (arg[0] == '\0') || end == NULL || (*end != '\0'))
613 /* make sure we don't exceed 32-bit boundary on 32-bit target */
614 #ifndef RTE_ARCH_X86_64
615 if (addr >= UINTPTR_MAX)
619 /* align the addr on 2M boundary */
620 internal_config.base_virtaddr = RTE_PTR_ALIGN_CEIL((uintptr_t)addr,
627 eal_parse_vfio_intr(const char *mode)
632 enum rte_intr_mode value;
634 { "legacy", RTE_INTR_MODE_LEGACY },
635 { "msi", RTE_INTR_MODE_MSI },
636 { "msix", RTE_INTR_MODE_MSIX },
639 for (i = 0; i < RTE_DIM(map); i++) {
640 if (!strcmp(mode, map[i].name)) {
641 internal_config.vfio_intr_mode = map[i].value;
649 eal_get_hugepage_mem_size(void)
654 for (i = 0; i < internal_config.num_hugepage_sizes; i++) {
655 struct hugepage_info *hpi = &internal_config.hugepage_info[i];
656 if (hpi->hugedir != NULL) {
657 for (j = 0; j < RTE_MAX_NUMA_NODES; j++) {
658 size += hpi->hugepage_sz * hpi->num_pages[j];
663 return (size < SIZE_MAX) ? (size_t)(size) : SIZE_MAX;
666 static enum rte_proc_type_t
667 eal_parse_proc_type(const char *arg)
669 if (strncasecmp(arg, "primary", sizeof("primary")) == 0)
670 return RTE_PROC_PRIMARY;
671 if (strncasecmp(arg, "secondary", sizeof("secondary")) == 0)
672 return RTE_PROC_SECONDARY;
673 if (strncasecmp(arg, "auto", sizeof("auto")) == 0)
674 return RTE_PROC_AUTO;
676 return RTE_PROC_INVALID;
679 /* Parse the argument given in the command line of the application */
681 eal_parse_args(int argc, char **argv)
687 char *prgname = argv[0];
688 static struct option lgopts[] = {
689 {OPT_NO_HUGE, 0, 0, 0},
690 {OPT_NO_PCI, 0, 0, 0},
691 {OPT_NO_HPET, 0, 0, 0},
692 {OPT_VMWARE_TSC_MAP, 0, 0, 0},
693 {OPT_HUGE_DIR, 1, 0, 0},
694 {OPT_NO_SHCONF, 0, 0, 0},
695 {OPT_PROC_TYPE, 1, 0, 0},
696 {OPT_FILE_PREFIX, 1, 0, 0},
697 {OPT_SOCKET_MEM, 1, 0, 0},
698 {OPT_PCI_WHITELIST, 1, 0, 0},
699 {OPT_PCI_BLACKLIST, 1, 0, 0},
701 {OPT_SYSLOG, 1, NULL, 0},
702 {OPT_VFIO_INTR, 1, NULL, 0},
703 {OPT_BASE_VIRTADDR, 1, 0, 0},
704 {OPT_XEN_DOM0, 0, 0, 0},
705 {OPT_CREATE_UIO_DEV, 1, NULL, 0},
708 struct shared_driver *solib;
712 internal_config.memory = 0;
713 internal_config.force_nrank = 0;
714 internal_config.force_nchannel = 0;
715 internal_config.hugefile_prefix = HUGEFILE_PREFIX_DEFAULT;
716 internal_config.hugepage_dir = NULL;
717 internal_config.force_sockets = 0;
718 internal_config.syslog_facility = LOG_DAEMON;
719 internal_config.xen_dom0_support = 0;
720 /* if set to NONE, interrupt mode is determined automatically */
721 internal_config.vfio_intr_mode = RTE_INTR_MODE_NONE;
722 #ifdef RTE_LIBEAL_USE_HPET
723 internal_config.no_hpet = 0;
725 internal_config.no_hpet = 1;
727 /* zero out the NUMA config */
728 for (i = 0; i < RTE_MAX_NUMA_NODES; i++)
729 internal_config.socket_mem[i] = 0;
731 /* zero out hugedir descriptors */
732 for (i = 0; i < MAX_HUGEPAGE_SIZES; i++)
733 internal_config.hugepage_info[i].lock_descriptor = -1;
735 internal_config.vmware_tsc_map = 0;
736 internal_config.base_virtaddr = 0;
738 while ((opt = getopt_long(argc, argvopt, "b:w:c:d:m:n:r:v",
739 lgopts, &option_index)) != EOF) {
744 if (rte_eal_devargs_add(RTE_DEVTYPE_BLACKLISTED_PCI,
752 if (rte_eal_devargs_add(RTE_DEVTYPE_WHITELISTED_PCI,
760 if (eal_parse_coremask(optarg) < 0) {
761 RTE_LOG(ERR, EAL, "invalid coremask\n");
767 /* force loading of external driver */
769 solib = malloc(sizeof(*solib));
771 RTE_LOG(ERR, EAL, "malloc(solib) failed\n");
774 memset(solib, 0, sizeof(*solib));
775 strncpy(solib->name, optarg, PATH_MAX-1);
776 solib->name[PATH_MAX-1] = 0;
777 TAILQ_INSERT_TAIL(&solib_list, solib, next);
781 internal_config.memory = atoi(optarg);
782 internal_config.memory *= 1024ULL;
783 internal_config.memory *= 1024ULL;
785 /* force number of channels */
787 internal_config.force_nchannel = atoi(optarg);
788 if (internal_config.force_nchannel == 0 ||
789 internal_config.force_nchannel > 4) {
790 RTE_LOG(ERR, EAL, "invalid channel number\n");
795 /* force number of ranks */
797 internal_config.force_nrank = atoi(optarg);
798 if (internal_config.force_nrank == 0 ||
799 internal_config.force_nrank > 16) {
800 RTE_LOG(ERR, EAL, "invalid rank number\n");
806 /* since message is explicitly requested by user, we
807 * write message at highest log level so it can always be seen
808 * even if info or warning messages are disabled */
809 RTE_LOG(CRIT, EAL, "RTE Version: '%s'\n", rte_version());
814 if (!strcmp(lgopts[option_index].name, OPT_NO_HUGE)) {
815 internal_config.no_hugetlbfs = 1;
817 if (!strcmp(lgopts[option_index].name, OPT_XEN_DOM0)) {
818 #ifdef RTE_LIBRTE_XEN_DOM0
819 internal_config.xen_dom0_support = 1;
821 RTE_LOG(ERR, EAL, "Can't support DPDK app "
822 "running on Dom0, please configure"
823 " RTE_LIBRTE_XEN_DOM0=y\n");
827 else if (!strcmp(lgopts[option_index].name, OPT_NO_PCI)) {
828 internal_config.no_pci = 1;
830 else if (!strcmp(lgopts[option_index].name, OPT_NO_HPET)) {
831 internal_config.no_hpet = 1;
833 else if (!strcmp(lgopts[option_index].name, OPT_VMWARE_TSC_MAP)) {
834 internal_config.vmware_tsc_map = 1;
836 else if (!strcmp(lgopts[option_index].name, OPT_NO_SHCONF)) {
837 internal_config.no_shconf = 1;
839 else if (!strcmp(lgopts[option_index].name, OPT_HUGE_DIR)) {
840 internal_config.hugepage_dir = optarg;
842 else if (!strcmp(lgopts[option_index].name, OPT_PROC_TYPE)) {
843 internal_config.process_type = eal_parse_proc_type(optarg);
845 else if (!strcmp(lgopts[option_index].name, OPT_FILE_PREFIX)) {
846 internal_config.hugefile_prefix = optarg;
848 else if (!strcmp(lgopts[option_index].name, OPT_SOCKET_MEM)) {
849 if (eal_parse_socket_mem(optarg) < 0) {
850 RTE_LOG(ERR, EAL, "invalid parameters for --"
851 OPT_SOCKET_MEM "\n");
856 else if (!strcmp(lgopts[option_index].name, OPT_USE_DEVICE)) {
857 printf("The --use-device option is deprecated, please use\n"
858 "--whitelist or --vdev instead.\n");
862 else if (!strcmp(lgopts[option_index].name, OPT_PCI_BLACKLIST)) {
863 if (rte_eal_devargs_add(RTE_DEVTYPE_BLACKLISTED_PCI,
869 else if (!strcmp(lgopts[option_index].name, OPT_PCI_WHITELIST)) {
870 if (rte_eal_devargs_add(RTE_DEVTYPE_WHITELISTED_PCI,
876 else if (!strcmp(lgopts[option_index].name, OPT_VDEV)) {
877 if (rte_eal_devargs_add(RTE_DEVTYPE_VIRTUAL,
883 else if (!strcmp(lgopts[option_index].name, OPT_SYSLOG)) {
884 if (eal_parse_syslog(optarg) < 0) {
885 RTE_LOG(ERR, EAL, "invalid parameters for --"
891 else if (!strcmp(lgopts[option_index].name, OPT_BASE_VIRTADDR)) {
892 if (eal_parse_base_virtaddr(optarg) < 0) {
893 RTE_LOG(ERR, EAL, "invalid parameter for --"
894 OPT_BASE_VIRTADDR "\n");
899 else if (!strcmp(lgopts[option_index].name, OPT_VFIO_INTR)) {
900 if (eal_parse_vfio_intr(optarg) < 0) {
901 RTE_LOG(ERR, EAL, "invalid parameters for --"
907 else if (!strcmp(lgopts[option_index].name, OPT_CREATE_UIO_DEV)) {
908 internal_config.create_uio_dev = 1;
920 RTE_LOG(ERR, EAL, "coremask not specified\n");
924 if (internal_config.process_type == RTE_PROC_AUTO){
925 internal_config.process_type = eal_proc_type_detect();
927 if (internal_config.process_type == RTE_PROC_INVALID){
928 RTE_LOG(ERR, EAL, "Invalid process type specified\n");
932 if (internal_config.process_type == RTE_PROC_PRIMARY &&
933 internal_config.force_nchannel == 0) {
934 RTE_LOG(ERR, EAL, "Number of memory channels (-n) not specified\n");
938 if (index(internal_config.hugefile_prefix,'%') != NULL){
939 RTE_LOG(ERR, EAL, "Invalid char, '%%', in '"OPT_FILE_PREFIX"' option\n");
943 if (internal_config.memory > 0 && internal_config.force_sockets == 1) {
944 RTE_LOG(ERR, EAL, "Options -m and --socket-mem cannot be specified "
945 "at the same time\n");
949 /* --no-huge doesn't make sense with either -m or --socket-mem */
950 if (internal_config.no_hugetlbfs &&
951 (internal_config.memory > 0 ||
952 internal_config.force_sockets == 1)) {
953 RTE_LOG(ERR, EAL, "Options -m or --socket-mem cannot be specified "
954 "together with --no-huge!\n");
958 /* --xen-dom0 doesn't make sense with --socket-mem */
959 if (internal_config.xen_dom0_support && internal_config.force_sockets == 1) {
960 RTE_LOG(ERR, EAL, "Options --socket-mem cannot be specified "
961 "together with --xen_dom0!\n");
966 if (rte_eal_devargs_type_count(RTE_DEVTYPE_WHITELISTED_PCI) != 0 &&
967 rte_eal_devargs_type_count(RTE_DEVTYPE_BLACKLISTED_PCI) != 0) {
968 RTE_LOG(ERR, EAL, "Error: blacklist [-b] and whitelist "
969 "[-w] options cannot be used at the same time\n");
975 argv[optind-1] = prgname;
977 /* if no memory amounts were requested, this will result in 0 and
978 * will be overriden later, right after eal_hugepage_info_init() */
979 for (i = 0; i < RTE_MAX_NUMA_NODES; i++)
980 internal_config.memory += internal_config.socket_mem[i];
983 optind = 0; /* reset getopt lib */
988 eal_check_mem_on_local_socket(void)
990 const struct rte_memseg *ms;
993 socket_id = rte_lcore_to_socket_id(rte_config.master_lcore);
995 ms = rte_eal_get_physmem_layout();
997 for (i = 0; i < RTE_MAX_MEMSEG; i++)
998 if (ms[i].socket_id == socket_id &&
1002 RTE_LOG(WARNING, EAL, "WARNING: Master core has no "
1003 "memory on local socket!\n");
1007 sync_func(__attribute__((unused)) void *arg)
1013 rte_eal_mcfg_complete(void)
1015 /* ALL shared mem_config related INIT DONE */
1016 if (rte_config.process_type == RTE_PROC_PRIMARY)
1017 rte_config.mem_config->magic = RTE_MAGIC;
1021 * Request iopl privilege for all RPL, returns 0 on success
1024 rte_eal_iopl_init(void)
1026 return iopl(HIGHEST_RPL);
1029 /* Launch threads, called at application init(). */
1031 rte_eal_init(int argc, char **argv)
1034 pthread_t thread_id;
1035 static rte_atomic32_t run_once = RTE_ATOMIC32_INIT(0);
1036 struct shared_driver *solib = NULL;
1039 if (!rte_atomic32_test_and_set(&run_once))
1042 logid = strrchr(argv[0], '/');
1043 logid = strdup(logid ? logid + 1: argv[0]);
1045 thread_id = pthread_self();
1047 if (rte_eal_log_early_init() < 0)
1048 rte_panic("Cannot init early logs\n");
1050 if (rte_eal_cpu_init() < 0)
1051 rte_panic("Cannot detect lcores\n");
1053 fctret = eal_parse_args(argc, argv);
1057 if (internal_config.no_hugetlbfs == 0 &&
1058 internal_config.process_type != RTE_PROC_SECONDARY &&
1059 internal_config.xen_dom0_support == 0 &&
1060 eal_hugepage_info_init() < 0)
1061 rte_panic("Cannot get hugepage information\n");
1063 if (internal_config.memory == 0 && internal_config.force_sockets == 0) {
1064 if (internal_config.no_hugetlbfs)
1065 internal_config.memory = MEMSIZE_IF_NO_HUGE_PAGE;
1067 internal_config.memory = eal_get_hugepage_mem_size();
1070 if (internal_config.vmware_tsc_map == 1) {
1071 #ifdef RTE_LIBRTE_EAL_VMWARE_TSC_MAP_SUPPORT
1072 rte_cycles_vmware_tsc_map = 1;
1073 RTE_LOG (DEBUG, EAL, "Using VMWARE TSC MAP, "
1074 "you must have monitor_control.pseudo_perfctr = TRUE\n");
1076 RTE_LOG (WARNING, EAL, "Ignoring --vmware-tsc-map because "
1077 "RTE_LIBRTE_EAL_VMWARE_TSC_MAP_SUPPORT is not set\n");
1081 rte_srand(rte_rdtsc());
1085 if (rte_eal_iopl_init() == 0)
1086 rte_config.flags |= EAL_FLG_HIGH_IOPL;
1088 if (rte_eal_pci_init() < 0)
1089 rte_panic("Cannot init PCI\n");
1091 #ifdef RTE_LIBRTE_IVSHMEM
1092 if (rte_eal_ivshmem_init() < 0)
1093 rte_panic("Cannot init IVSHMEM\n");
1096 if (rte_eal_memory_init() < 0)
1097 rte_panic("Cannot init memory\n");
1099 /* the directories are locked during eal_hugepage_info_init */
1100 eal_hugedirs_unlock();
1102 if (rte_eal_memzone_init() < 0)
1103 rte_panic("Cannot init memzone\n");
1105 if (rte_eal_tailqs_init() < 0)
1106 rte_panic("Cannot init tail queues for objects\n");
1108 #ifdef RTE_LIBRTE_IVSHMEM
1109 if (rte_eal_ivshmem_obj_init() < 0)
1110 rte_panic("Cannot init IVSHMEM objects\n");
1113 if (rte_eal_log_init(logid, internal_config.syslog_facility) < 0)
1114 rte_panic("Cannot init logs\n");
1116 if (rte_eal_alarm_init() < 0)
1117 rte_panic("Cannot init interrupt-handling thread\n");
1119 if (rte_eal_intr_init() < 0)
1120 rte_panic("Cannot init interrupt-handling thread\n");
1122 if (rte_eal_timer_init() < 0)
1123 rte_panic("Cannot init HPET or TSC timers\n");
1125 eal_check_mem_on_local_socket();
1127 rte_eal_mcfg_complete();
1129 TAILQ_FOREACH(solib, &solib_list, next) {
1130 RTE_LOG(INFO, EAL, "open shared lib %s\n", solib->name);
1131 solib->lib_handle = dlopen(solib->name, RTLD_NOW);
1132 if (solib->lib_handle == NULL)
1133 RTE_LOG(WARNING, EAL, "%s\n", dlerror());
1136 eal_thread_init_master(rte_config.master_lcore);
1138 RTE_LOG(DEBUG, EAL, "Master core %u is ready (tid=%x)\n",
1139 rte_config.master_lcore, (int)thread_id);
1141 if (rte_eal_dev_init(PMD_INIT_PRE_PCI_PROBE) < 0)
1142 rte_panic("Cannot init pmd devices\n");
1144 RTE_LCORE_FOREACH_SLAVE(i) {
1147 * create communication pipes between master thread
1150 if (pipe(lcore_config[i].pipe_master2slave) < 0)
1151 rte_panic("Cannot create pipe\n");
1152 if (pipe(lcore_config[i].pipe_slave2master) < 0)
1153 rte_panic("Cannot create pipe\n");
1155 lcore_config[i].state = WAIT;
1157 /* create a thread for each lcore */
1158 ret = pthread_create(&lcore_config[i].thread_id, NULL,
1159 eal_thread_loop, NULL);
1161 rte_panic("Cannot create thread\n");
1165 * Launch a dummy function on all slave lcores, so that master lcore
1166 * knows they are all ready when this function returns.
1168 rte_eal_mp_remote_launch(sync_func, NULL, SKIP_MASTER);
1169 rte_eal_mp_wait_lcore();
1171 /* Probe & Initialize PCI devices */
1172 if (rte_eal_pci_probe())
1173 rte_panic("Cannot probe PCI\n");
1175 /* Initialize any outstanding devices */
1176 if (rte_eal_dev_init(PMD_INIT_POST_PCI_PROBE) < 0)
1177 rte_panic("Cannot init pmd devices\n");
1183 enum rte_lcore_role_t
1184 rte_eal_lcore_role(unsigned lcore_id)
1186 return (rte_config.lcore_role[lcore_id]);
1189 enum rte_proc_type_t
1190 rte_eal_process_type(void)
1192 return (rte_config.process_type);
1195 int rte_eal_has_hugepages(void)
1197 return ! internal_config.no_hugetlbfs;