numam-dpdk/lib/librte_eal/bsdapp/eal/eal.c

/*-
 *   BSD LICENSE
 * 
 *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
 *   Copyright(c) 2014 6WIND S.A.
 *   All rights reserved.
 * 
 *   Redistribution and use in source and binary forms, with or without
 *   modification, are permitted provided that the following conditions
 *   are met:
 * 
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in
 *       the documentation and/or other materials provided with the
 *       distribution.
 *     * Neither the name of Intel Corporation nor the names of its
 *       contributors may be used to endorse or promote products derived
 *       from this software without specific prior written permission.
 * 
 *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <stdarg.h>
#include <unistd.h>
#include <pthread.h>
#include <syslog.h>
#include <getopt.h>
#include <sys/file.h>
#include <stddef.h>
#include <errno.h>
#include <limits.h>
#include <errno.h>
#include <sys/mman.h>
#include <sys/queue.h>

#include <rte_common.h>
#include <rte_debug.h>
#include <rte_memory.h>
#include <rte_memzone.h>
#include <rte_launch.h>
#include <rte_tailq.h>
#include <rte_eal.h>
#include <rte_eal_memconfig.h>
#include <rte_per_lcore.h>
#include <rte_lcore.h>
#include <rte_log.h>
#include <rte_random.h>
#include <rte_cycles.h>
#include <rte_string_fns.h>
#include <rte_cpuflags.h>
#include <rte_interrupts.h>
#include <rte_pci.h>
#include <rte_devargs.h>
#include <rte_common.h>
#include <rte_version.h>
#include <rte_atomic.h>
#include <malloc_heap.h>
#include <rte_eth_ring.h>

#include "eal_private.h"
#include "eal_thread.h"
#include "eal_internal_cfg.h"
#include "eal_filesystem.h"
#include "eal_hugepages.h"

#define OPT_HUGE_DIR    "huge-dir"
#define OPT_PROC_TYPE   "proc-type"
#define OPT_NO_SHCONF   "no-shconf"
#define OPT_NO_HPET     "no-hpet"
#define OPT_VMWARE_TSC_MAP   "vmware-tsc-map"
#define OPT_NO_PCI      "no-pci"
#define OPT_NO_HUGE     "no-huge"
#define OPT_FILE_PREFIX "file-prefix"
#define OPT_SOCKET_MEM  "socket-mem"
#define OPT_USE_DEVICE "use-device"
#define OPT_PCI_WHITELIST "pci-whitelist"
#define OPT_PCI_BLACKLIST "pci-blacklist"
#define OPT_VDEV        "vdev"
#define OPT_SYSLOG      "syslog"

#define RTE_EAL_BLACKLIST_SIZE	0x100

#define MEMSIZE_IF_NO_HUGE_PAGE (64ULL * 1024ULL * 1024ULL)

#define SOCKET_MEM_STRLEN (RTE_MAX_NUMA_NODES * 10)

#define HIGHEST_RPL 3

#define BITS_PER_HEX 4

#define GET_BLACKLIST_FIELD(in, fd, lim, dlm)                   \
{                                                               \
	unsigned long val;                                      \
	char *end;                                              \
	errno = 0;                                              \
	val = strtoul((in), &end, 16);                          \
	if (errno != 0 || end[0] != (dlm) || val > (lim))       \
		return (-EINVAL);                               \
	(fd) = (typeof (fd))val;                                \
	(in) = end + 1;                                         \
}

/* Allow the application to print its usage message too if set */
static rte_usage_hook_t	rte_application_usage_hook = NULL;
/* early configuration structure, when memory config is not mmapped */
static struct rte_mem_config early_mem_config;

/* define fd variable here, because file needs to be kept open for the
 * duration of the program, as we hold a write lock on it in the primary proc */
static int mem_cfg_fd = -1;

static struct flock wr_lock = {
		.l_type = F_WRLCK,
		.l_whence = SEEK_SET,
		.l_start = offsetof(struct rte_mem_config, memseg),
		.l_len = sizeof(early_mem_config.memseg),
};

/* Address of global and public configuration */
static struct rte_config rte_config = {
		.mem_config = &early_mem_config,
};

/* internal configuration (per-core) */
struct lcore_config lcore_config[RTE_MAX_LCORE];

/* internal configuration */
struct internal_config internal_config;

/* used by rte_rdtsc() */
int rte_cycles_vmware_tsc_map;

/* Return a pointer to the configuration structure */
struct rte_config *
rte_eal_get_configuration(void)
{
	return &rte_config;
}

/* parse a sysfs (or other) file containing one integer value */
int
eal_parse_sysfs_value(const char *filename, unsigned long *val)
{
	FILE *f;
	char buf[BUFSIZ];
	char *end = NULL;

	if ((f = fopen(filename, "r")) == NULL) {
		RTE_LOG(ERR, EAL, "%s(): cannot open sysfs value %s\n",
			__func__, filename);
		return -1;
	}

	if (fgets(buf, sizeof(buf), f) == NULL) {
		RTE_LOG(ERR, EAL, "%s(): cannot read sysfs value %s\n",
			__func__, filename);
		fclose(f);
		return -1;
	}
	*val = strtoul(buf, &end, 0);
	if ((buf[0] == '\0') || (end == NULL) || (*end != '\n')) {
		RTE_LOG(ERR, EAL, "%s(): cannot parse sysfs value %s\n",
				__func__, filename);
		fclose(f);
		return -1;
	}
	fclose(f);
	return 0;
}


/* create memory configuration in shared/mmap memory. Take out
 * a write lock on the memsegs, so we can auto-detect primary/secondary.
 * This means we never close the file while running (auto-close on exit).
 * We also don't lock the whole file, so that in future we can use read-locks
 * on other parts, e.g. memzones, to detect if there are running secondary
 * processes. */
static void
rte_eal_config_create(void)
{
	void *rte_mem_cfg_addr;
	int retval;

	const char *pathname = eal_runtime_config_path();

	if (internal_config.no_shconf)
		return;

	if (mem_cfg_fd < 0){
		mem_cfg_fd = open(pathname, O_RDWR | O_CREAT, 0660);
		if (mem_cfg_fd < 0)
			rte_panic("Cannot open '%s' for rte_mem_config\n", pathname);
	}

	retval = ftruncate(mem_cfg_fd, sizeof(*rte_config.mem_config));
	if (retval < 0){
		close(mem_cfg_fd);
		rte_panic("Cannot resize '%s' for rte_mem_config\n", pathname);
	}

	retval = fcntl(mem_cfg_fd, F_SETLK, &wr_lock);
	if (retval < 0){
		close(mem_cfg_fd);
		rte_exit(EXIT_FAILURE, "Cannot create lock on '%s'. Is another primary "
				"process running?\n", pathname);
	}

	rte_mem_cfg_addr = mmap(NULL, sizeof(*rte_config.mem_config),
				PROT_READ | PROT_WRITE, MAP_SHARED, mem_cfg_fd, 0);

	if (rte_mem_cfg_addr == MAP_FAILED){
		rte_panic("Cannot mmap memory for rte_config\n");
	}
	memcpy(rte_mem_cfg_addr, &early_mem_config, sizeof(early_mem_config));
	rte_config.mem_config = (struct rte_mem_config *) rte_mem_cfg_addr;
}

/* attach to an existing shared memory config */
static void
rte_eal_config_attach(void)
{
	void *rte_mem_cfg_addr;
	const char *pathname = eal_runtime_config_path();

	if (internal_config.no_shconf)
		return;

	if (mem_cfg_fd < 0){
		mem_cfg_fd = open(pathname, O_RDWR);
		if (mem_cfg_fd < 0)
			rte_panic("Cannot open '%s' for rte_mem_config\n", pathname);
	}

	rte_mem_cfg_addr = mmap(NULL, sizeof(*rte_config.mem_config), 
				PROT_READ | PROT_WRITE, MAP_SHARED, mem_cfg_fd, 0);
	close(mem_cfg_fd);
	if (rte_mem_cfg_addr == MAP_FAILED)
		rte_panic("Cannot mmap memory for rte_config\n");

	rte_config.mem_config = (struct rte_mem_config *) rte_mem_cfg_addr;
}

/* Detect if we are a primary or a secondary process */
static enum rte_proc_type_t
eal_proc_type_detect(void)
{
	enum rte_proc_type_t ptype = RTE_PROC_PRIMARY;
	const char *pathname = eal_runtime_config_path();

	/* if we can open the file but not get a write-lock we are a secondary
	 * process. NOTE: if we get a file handle back, we keep that open
	 * and don't close it to prevent a race condition between multiple opens */
	if (((mem_cfg_fd = open(pathname, O_RDWR)) >= 0) &&
			(fcntl(mem_cfg_fd, F_SETLK, &wr_lock) < 0))
		ptype = RTE_PROC_SECONDARY;

	RTE_LOG(INFO, EAL, "Auto-detected process type: %s\n",
			ptype == RTE_PROC_PRIMARY ? "PRIMARY" : "SECONDARY");

	return ptype;
}

/* Sets up rte_config structure with the pointer to shared memory config.*/
static void
rte_config_init(void)
{
	rte_config.process_type = (internal_config.process_type == RTE_PROC_AUTO) ?
			eal_proc_type_detect() : /* for auto, detect the type */
			internal_config.process_type; /* otherwise use what's already set */

	switch (rte_config.process_type){
	case RTE_PROC_PRIMARY:
		rte_eal_config_create();
		break;
	case RTE_PROC_SECONDARY:
		rte_eal_config_attach();
		rte_eal_mcfg_wait_complete(rte_config.mem_config);
		break;
	case RTE_PROC_AUTO:
	case RTE_PROC_INVALID:
		rte_panic("Invalid process type\n");
	}
}

/* display usage */
static void
eal_usage(const char *prgname)
{
	printf("\nUsage: %s -c COREMASK -n NUM [-m NB] [-r NUM] [-b <domain:bus:devid.func>]"
	       "[--proc-type primary|secondary|auto] \n\n"
	       "EAL options:\n"
	       "  -c COREMASK  : A hexadecimal bitmask of cores to run on\n"
	       "  -n NUM       : Number of memory channels\n"
	       "  -v           : Display version information on startup\n"
	       "  -m MB        : memory to allocate\n"
	       "  -r NUM       : force number of memory ranks (don't detect)\n"
	       "  --"OPT_PROC_TYPE"  : type of this process\n"
	       "  --"OPT_PCI_BLACKLIST", -b: add a PCI device in black list.\n"
	       "               Prevent EAL from using this PCI device. The argument\n"
	       "               format is <domain:bus:devid.func>.\n"
	       "  --"OPT_PCI_WHITELIST", -w: add a PCI device in white list.\n"
	       "               Only use the specified PCI devices. The argument format\n"
	       "               is <[domain:]bus:devid.func>. This option can be present\n"
	       "               several times (once per device).\n"
	       "               [NOTE: PCI whitelist cannot be used with -b option]\n"
	       "  --"OPT_VDEV": add a virtual device.\n"
	       "               The argument format is <driver><id>[,key=val,...]\n"
	       "               (ex: --vdev=eth_pcap0,iface=eth2).\n"
	       "  --"OPT_VMWARE_TSC_MAP": use VMware TSC map instead of "
	    		   "native RDTSC\n"
	       "\nEAL options for DEBUG use only:\n"
	       "  --"OPT_NO_HUGE"  : use malloc instead of hugetlbfs\n"
	       "  --"OPT_NO_PCI"   : disable pci\n"
	       "  --"OPT_NO_SHCONF": no shared config (mmap'd files)\n"
	       "\n",
	       prgname);
	/* Allow the application to print its usage message too if hook is set */
	if ( rte_application_usage_hook ) {
		printf("===== Application Usage =====\n\n");
		rte_application_usage_hook(prgname);
	}
}

/* Set a per-application usage message */
rte_usage_hook_t
rte_set_application_usage_hook( rte_usage_hook_t usage_func )
{
	rte_usage_hook_t	old_func;

	/* Will be NULL on the first call to denote the last usage routine. */
	old_func					= rte_application_usage_hook;
	rte_application_usage_hook	= usage_func;

	return old_func;
}

/*
 * Parse the coremask given as argument (hexadecimal string) and fill
 * the global configuration (core role and core count) with the parsed
 * value.
 */
static int xdigit2val(unsigned char c)
{
	int val;
	if(isdigit(c)) 
		val = c - '0';
	else if(isupper(c))
		val = c - 'A' + 10;
	else 
		val = c - 'a' + 10;
	return val;
}
static int
eal_parse_coremask(const char *coremask)
{
	struct rte_config *cfg = rte_eal_get_configuration();
	int i, j, idx = 0 ;
	unsigned count = 0;
	char c;
	int val;

	if (coremask == NULL)
		return -1;
	/* Remove all blank characters ahead and after .
	 * Remove 0x/0X if exists.
	 */
	while (isblank(*coremask))
		coremask++;
	if (coremask[0] == '0' && ((coremask[1] == 'x')
		||  (coremask[1] == 'X')) )
		coremask += 2;
	i = strnlen(coremask, sysconf(_SC_ARG_MAX));
	while ((i > 0) && isblank(coremask[i - 1]))
		i--;
	if (i == 0)
		return -1;

	for (i = i - 1; i >= 0 && idx < RTE_MAX_LCORE; i--) {
		c = coremask[i];
		if (isxdigit(c) == 0) {
			/* invalid characters */
			return (-1);
		}
		val = xdigit2val(c);
		for(j = 0; j < BITS_PER_HEX && idx < RTE_MAX_LCORE; j++, idx++) {
			if((1 << j) & val) {
				cfg->lcore_role[idx] = ROLE_RTE;
				if(count == 0)
					cfg->master_lcore = idx;
				count++;
			} else  {
				cfg->lcore_role[idx] = ROLE_OFF;
			}
		}
	}
	for(; i >= 0; i--)
		if(coremask[i] != '0')
			return -1;
	for(; idx < RTE_MAX_LCORE; idx++)
		cfg->lcore_role[idx] = ROLE_OFF;
	if(count == 0)
		return -1;
	return 0;
}

static int
eal_parse_syslog(const char *facility)
{
	int i;
	static struct {
		const char *name;
		int value;
	} map[] = {
		{ "auth", LOG_AUTH },
		{ "cron", LOG_CRON },
		{ "daemon", LOG_DAEMON },
		{ "ftp", LOG_FTP },
		{ "kern", LOG_KERN },
		{ "lpr", LOG_LPR },
		{ "mail", LOG_MAIL },
		{ "news", LOG_NEWS },
		{ "syslog", LOG_SYSLOG },
		{ "user", LOG_USER },
		{ "uucp", LOG_UUCP },
		{ "local0", LOG_LOCAL0 },
		{ "local1", LOG_LOCAL1 },
		{ "local2", LOG_LOCAL2 },
		{ "local3", LOG_LOCAL3 },
		{ "local4", LOG_LOCAL4 },
		{ "local5", LOG_LOCAL5 },
		{ "local6", LOG_LOCAL6 },
		{ "local7", LOG_LOCAL7 },
		{ NULL, 0 }
	};

	for (i = 0; map[i].name; i++) {
		if (!strcmp(facility, map[i].name)) {
			internal_config.syslog_facility = map[i].value;
			return 0;
		}
	}
	return -1;
}

static inline size_t
eal_get_hugepage_mem_size(void)
{
	uint64_t size = 0;
	unsigned i, j;

	for (i = 0; i < internal_config.num_hugepage_sizes; i++) {
		struct hugepage_info *hpi = &internal_config.hugepage_info[i];
		if (hpi->hugedir != NULL) {
			for (j = 0; j < RTE_MAX_NUMA_NODES; j++) {
				size += hpi->hugepage_sz * hpi->num_pages[j];
			}
		}
	}

	return (size < SIZE_MAX) ? (size_t)(size) : SIZE_MAX;
}

static enum rte_proc_type_t
eal_parse_proc_type(const char *arg)
{
	if (strncasecmp(arg, "primary", sizeof("primary")) == 0)
		return RTE_PROC_PRIMARY;
	if (strncasecmp(arg, "secondary", sizeof("secondary")) == 0)
		return RTE_PROC_SECONDARY;
	if (strncasecmp(arg, "auto", sizeof("auto")) == 0)
		return RTE_PROC_AUTO;

	return RTE_PROC_INVALID;
}

/* Parse the argument given in the command line of the application */
static int
eal_parse_args(int argc, char **argv)
{
	int opt, ret, i;
	char **argvopt;
	int option_index;
	int coremask_ok = 0;
	char *prgname = argv[0];
	static struct option lgopts[] = {
		{OPT_NO_HUGE, 0, 0, 0},
		{OPT_NO_PCI, 0, 0, 0},
		{OPT_NO_HPET, 0, 0, 0},
		{OPT_VMWARE_TSC_MAP, 0, 0, 0},
		{OPT_HUGE_DIR, 1, 0, 0},
		{OPT_NO_SHCONF, 0, 0, 0},
		{OPT_PROC_TYPE, 1, 0, 0},
		{OPT_FILE_PREFIX, 1, 0, 0},
		{OPT_SOCKET_MEM, 1, 0, 0},
		{OPT_PCI_WHITELIST, 1, 0, 0},
		{OPT_PCI_BLACKLIST, 1, 0, 0},
		{OPT_VDEV, 1, 0, 0},
		{OPT_SYSLOG, 1, NULL, 0},
		{0, 0, 0, 0}
	};

	argvopt = argv;

	internal_config.memory = 0;
	internal_config.force_nrank = 0;
	internal_config.force_nchannel = 0;
	internal_config.hugefile_prefix = HUGEFILE_PREFIX_DEFAULT;
	internal_config.hugepage_dir = NULL;
	internal_config.force_sockets = 0;
	internal_config.syslog_facility = LOG_DAEMON;
#ifdef RTE_LIBEAL_USE_HPET
	internal_config.no_hpet = 0;
#else
	internal_config.no_hpet = 1;
#endif
	/* zero out the NUMA config */
	for (i = 0; i < RTE_MAX_NUMA_NODES; i++)
		internal_config.socket_mem[i] = 0;

	/* zero out hugedir descriptors */
	for (i = 0; i < MAX_HUGEPAGE_SIZES; i++)
		internal_config.hugepage_info[i].lock_descriptor = 0;

	internal_config.vmware_tsc_map = 0;

	while ((opt = getopt_long(argc, argvopt, "b:w:c:m:n:r:v",
				  lgopts, &option_index)) != EOF) {

		switch (opt) {
		/* blacklist */
		case 'b':
			if (rte_eal_devargs_add(RTE_DEVTYPE_BLACKLISTED_PCI,
					optarg) < 0) {
				eal_usage(prgname);
				return (-1);
			}
			break;
		/* whitelist */
		case 'w':
			if (rte_eal_devargs_add(RTE_DEVTYPE_WHITELISTED_PCI,
					optarg) < 0) {
				eal_usage(prgname);
				return -1;
			}
			break;
		/* coremask */
		case 'c':
			if (eal_parse_coremask(optarg) < 0) {
				RTE_LOG(ERR, EAL, "invalid coremask\n");
				eal_usage(prgname);
				return -1;
			}
			coremask_ok = 1;
			break;
		/* size of memory */
		case 'm':
			internal_config.memory = atoi(optarg);
			internal_config.memory *= 1024ULL;
			internal_config.memory *= 1024ULL;
			break;
		/* force number of channels */
		case 'n':
			internal_config.force_nchannel = atoi(optarg);
			if (internal_config.force_nchannel == 0 ||
			    internal_config.force_nchannel > 4) {
				RTE_LOG(ERR, EAL, "invalid channel number\n");
				eal_usage(prgname);
				return -1;
			}
			break;
		/* force number of ranks */
		case 'r':
			internal_config.force_nrank = atoi(optarg);
			if (internal_config.force_nrank == 0 ||
			    internal_config.force_nrank > 16) {
				RTE_LOG(ERR, EAL, "invalid rank number\n");
				eal_usage(prgname);
				return -1;
			}
			break;
		case 'v':
			/* since message is explicitly requested by user, we
			 * write message at highest log level so it can always be seen
			 * even if info or warning messages are disabled */
			RTE_LOG(CRIT, EAL, "RTE Version: '%s'\n", rte_version());
			break;

		/* long options */
		case 0:
			if (!strcmp(lgopts[option_index].name, OPT_NO_HUGE)) {
				internal_config.no_hugetlbfs = 1;
			}
			else if (!strcmp(lgopts[option_index].name, OPT_NO_PCI)) {
				internal_config.no_pci = 1;
			}
			else if (!strcmp(lgopts[option_index].name, OPT_NO_HPET)) {
				internal_config.no_hpet = 1;
			}
			else if (!strcmp(lgopts[option_index].name, OPT_VMWARE_TSC_MAP)) {
				internal_config.vmware_tsc_map = 1;
			}
			else if (!strcmp(lgopts[option_index].name, OPT_NO_SHCONF)) {
				internal_config.no_shconf = 1;
			}
			else if (!strcmp(lgopts[option_index].name, OPT_HUGE_DIR)) {
				RTE_LOG(ERR, EAL, "Option "OPT_HUGE_DIR" is not supported on"
						"FreeBSD\n");
				return -1;
			}
			else if (!strcmp(lgopts[option_index].name, OPT_PROC_TYPE)) {
				internal_config.process_type = eal_parse_proc_type(optarg);
			}
			else if (!strcmp(lgopts[option_index].name, OPT_FILE_PREFIX)) {
				RTE_LOG(ERR, EAL, "Option "OPT_FILE_PREFIX" is not supported on"
						"FreeBSD\n");
				return -1;
			}
			else if (!strcmp(lgopts[option_index].name, OPT_SOCKET_MEM)) {
				RTE_LOG(ERR, EAL, "Option "OPT_SOCKET_MEM" is not supported on"
						"FreeBSD\n");
				return -1;
			}
			else if (!strcmp(lgopts[option_index].name, OPT_USE_DEVICE)) {
				printf("The --use-device option is deprecated, please use\n"
					"--whitelist or --vdev instead.\n");
				eal_usage(prgname);
				return -1;
			}
			else if (!strcmp(lgopts[option_index].name, OPT_PCI_BLACKLIST)) {
				if (rte_eal_devargs_add(RTE_DEVTYPE_BLACKLISTED_PCI,
						optarg) < 0) {
					eal_usage(prgname);
					return -1;
				}
			}
			else if (!strcmp(lgopts[option_index].name, OPT_PCI_WHITELIST)) {
				if (rte_eal_devargs_add(RTE_DEVTYPE_WHITELISTED_PCI,
						optarg) < 0) {
					eal_usage(prgname);
					return -1;
				}
			}
			else if (!strcmp(lgopts[option_index].name, OPT_VDEV)) {
				if (rte_eal_devargs_add(RTE_DEVTYPE_VIRTUAL,
						optarg) < 0) {
					eal_usage(prgname);
					return -1;
				}
			}
			else if (!strcmp(lgopts[option_index].name, OPT_SYSLOG)) {
				if (eal_parse_syslog(optarg) < 0) {
					RTE_LOG(ERR, EAL, "invalid parameters for --"
							OPT_SYSLOG "\n");
					eal_usage(prgname);
					return -1;
				}
			}
			break;

		default:
			eal_usage(prgname);
			return -1;
		}
	}

	/* sanity checks */
	if (!coremask_ok) {
		RTE_LOG(ERR, EAL, "coremask not specified\n");
		eal_usage(prgname);
		return -1;
	}
	if (internal_config.process_type == RTE_PROC_AUTO){
		internal_config.process_type = eal_proc_type_detect();
	}
	if (internal_config.process_type == RTE_PROC_INVALID){
		RTE_LOG(ERR, EAL, "Invalid process type specified\n");
		eal_usage(prgname);
		return -1;
	}
	if (internal_config.process_type == RTE_PROC_PRIMARY &&
			internal_config.force_nchannel == 0) {
		RTE_LOG(ERR, EAL, "Number of memory channels (-n) not specified\n");
		eal_usage(prgname);
		return -1;
	}
	if (index(internal_config.hugefile_prefix,'%') != NULL){
		RTE_LOG(ERR, EAL, "Invalid char, '%%', in '"OPT_FILE_PREFIX"' option\n");
		eal_usage(prgname);
		return -1;
	}
	if (internal_config.memory > 0 && internal_config.force_sockets == 1) {
		RTE_LOG(ERR, EAL, "Options -m and --socket-mem cannot be specified "
				"at the same time\n");
		eal_usage(prgname);
		return -1;
	}
	/* --no-huge doesn't make sense with either -m or --socket-mem */
	if (internal_config.no_hugetlbfs &&
			(internal_config.memory > 0 ||
					internal_config.force_sockets == 1)) {
		RTE_LOG(ERR, EAL, "Options -m or --socket-mem cannot be specified "
				"together with --no-huge!\n");
		eal_usage(prgname);
		return -1;
	}

	if (rte_eal_devargs_type_count(RTE_DEVTYPE_WHITELISTED_PCI) != 0 &&
		rte_eal_devargs_type_count(RTE_DEVTYPE_BLACKLISTED_PCI) != 0) {
		RTE_LOG(ERR, EAL, "Error: blacklist [-b] and whitelist "
			"[-w] options cannot be used at the same time\n");
		eal_usage(prgname);
		return -1;
	}

	if (optind >= 0)
		argv[optind-1] = prgname;

	/* if no memory amounts were requested, this will result in 0 and
	 * will be overriden later, right after eal_hugepage_info_init() */
	for (i = 0; i < RTE_MAX_NUMA_NODES; i++)
		internal_config.memory += internal_config.socket_mem[i];

	ret = optind-1;
	optind = 0; /* reset getopt lib */
	return ret;
}

static void
eal_check_mem_on_local_socket(void)
{
	const struct rte_memseg *ms;
	int i, socket_id;

	socket_id = rte_lcore_to_socket_id(rte_config.master_lcore);

	ms = rte_eal_get_physmem_layout();

	for (i = 0; i < RTE_MAX_MEMSEG; i++)
		if (ms[i].socket_id == socket_id &&
				ms[i].len > 0)
			return;

	RTE_LOG(WARNING, EAL, "WARNING: Master core has no "
			"memory on local socket!\n");
}

static int
sync_func(__attribute__((unused)) void *arg)
{
	return 0;
}

inline static void 
rte_eal_mcfg_complete(void)
{
	/* ALL shared mem_config related INIT DONE */
	if (rte_config.process_type == RTE_PROC_PRIMARY)
		rte_config.mem_config->magic = RTE_MAGIC;
}

/* return non-zero if hugepages are enabled. */
int rte_eal_has_hugepages(void)
{
	return !internal_config.no_hugetlbfs;
}

/* Abstraction for port I/0 privilege */
static int
rte_eal_iopl_init(void)
{
	int fd = -1;
	fd = open("/dev/io", O_RDWR);
	if (fd < 0)
		return -1;
	return 0;
}

/* Launch threads, called at application init(). */
int
rte_eal_init(int argc, char **argv)
{
	int i, fctret, ret;
	pthread_t thread_id;
	static rte_atomic32_t run_once = RTE_ATOMIC32_INIT(0);

	if (!rte_atomic32_test_and_set(&run_once))
		return -1;

	thread_id = pthread_self();

	if (rte_eal_log_early_init() < 0)
		rte_panic("Cannot init early logs\n");

	fctret = eal_parse_args(argc, argv);
	if (fctret < 0)
		exit(1);

	if (internal_config.no_hugetlbfs == 0 &&
			internal_config.process_type != RTE_PROC_SECONDARY &&
			eal_hugepage_info_init() < 0)
		rte_panic("Cannot get hugepage information\n");

	if (internal_config.memory == 0 && internal_config.force_sockets == 0) {
		if (internal_config.no_hugetlbfs)
			internal_config.memory = MEMSIZE_IF_NO_HUGE_PAGE;
		else
			internal_config.memory = eal_get_hugepage_mem_size();
	}

	if (internal_config.vmware_tsc_map == 1) {
#ifdef RTE_LIBRTE_EAL_VMWARE_TSC_MAP_SUPPORT
		rte_cycles_vmware_tsc_map = 1;
		RTE_LOG (DEBUG, EAL, "Using VMWARE TSC MAP, "
				"you must have monitor_control.pseudo_perfctr = TRUE\n");
#else
		RTE_LOG (WARNING, EAL, "Ignoring --vmware-tsc-map because "
				"RTE_LIBRTE_EAL_VMWARE_TSC_MAP_SUPPORT is not set\n");
#endif
	}

	rte_srand(rte_rdtsc());

	rte_config_init();

	if (rte_eal_iopl_init() == 0)
		rte_config.flags |= EAL_FLG_HIGH_IOPL;

	if (rte_eal_cpu_init() < 0)
		rte_panic("Cannot detect lcores\n");

	if (rte_eal_memory_init() < 0)
		rte_panic("Cannot init memory\n");

	if (rte_eal_memzone_init() < 0)
		rte_panic("Cannot init memzone\n");

	if (rte_eal_tailqs_init() < 0)
		rte_panic("Cannot init tail queues for objects\n");

/*	if (rte_eal_log_init(argv[0], internal_config.syslog_facility) < 0)
		rte_panic("Cannot init logs\n");*/

	if (rte_eal_alarm_init() < 0)
		rte_panic("Cannot init interrupt-handling thread\n");

	if (rte_eal_intr_init() < 0)
		rte_panic("Cannot init interrupt-handling thread\n");

	if (rte_eal_timer_init() < 0)
		rte_panic("Cannot init HPET or TSC timers\n");

	if (rte_eal_pci_init() < 0)
		rte_panic("Cannot init PCI\n");

	RTE_LOG(DEBUG, EAL, "Master core %u is ready (tid=%p)\n",
		rte_config.master_lcore, thread_id);

	eal_check_mem_on_local_socket();

	rte_eal_mcfg_complete();

	if (rte_eal_vdev_init() < 0)
		rte_panic("Cannot init virtual devices\n");

	RTE_LCORE_FOREACH_SLAVE(i) {

		/*
		 * create communication pipes between master thread
		 * and children
		 */
		if (pipe(lcore_config[i].pipe_master2slave) < 0)
			rte_panic("Cannot create pipe\n");
		if (pipe(lcore_config[i].pipe_slave2master) < 0)
			rte_panic("Cannot create pipe\n");

		lcore_config[i].state = WAIT;

		/* create a thread for each lcore */
		ret = pthread_create(&lcore_config[i].thread_id, NULL,
				     eal_thread_loop, NULL);
		if (ret != 0)
			rte_panic("Cannot create thread\n");
	}

	eal_thread_init_master(rte_config.master_lcore);

	/*
	 * Launch a dummy function on all slave lcores, so that master lcore
	 * knows they are all ready when this function returns.
	 */
	rte_eal_mp_remote_launch(sync_func, NULL, SKIP_MASTER);
	rte_eal_mp_wait_lcore();

	return fctret;
}

/* get core role */
enum rte_lcore_role_t
rte_eal_lcore_role(unsigned lcore_id)
{
	return (rte_config.lcore_role[lcore_id]);
}

enum rte_proc_type_t
rte_eal_process_type(void)
{
	return (rte_config.process_type);
}