--- /dev/null
+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2010-2016 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_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_dev.h>
+#include <rte_devargs.h>
+#include <rte_common.h>
+#include <rte_version.h>
+#include <rte_atomic.h>
+#include <malloc_heap.h>
+
+#include "eal_private.h"
+#include "eal_thread.h"
+#include "eal_internal_cfg.h"
+#include "eal_filesystem.h"
+#include "eal_hugepages.h"
+#include "eal_options.h"
+
+#define MEMSIZE_IF_NO_HUGE_PAGE (64ULL * 1024ULL * 1024ULL)
+
+/* 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 */
+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;
+
+ 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 ", prgname);
+ eal_common_usage();
+ /* 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;
+}
+
+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;
+}
+
+/* Parse the arguments for --log-level only */
+static void
+eal_log_level_parse(int argc, char **argv)
+{
+ int opt;
+ char **argvopt;
+ int option_index;
+ const int old_optind = optind;
+ const int old_optopt = optopt;
+ const int old_optreset = optreset;
+ char * const old_optarg = optarg;
+
+ argvopt = argv;
+ optind = 1;
+ optreset = 1;
+
+ eal_reset_internal_config(&internal_config);
+
+ while ((opt = getopt_long(argc, argvopt, eal_short_options,
+ eal_long_options, &option_index)) != EOF) {
+
+ int ret;
+
+ /* getopt is not happy, stop right now */
+ if (opt == '?')
+ break;
+
+ ret = (opt == OPT_LOG_LEVEL_NUM) ?
+ eal_parse_common_option(opt, optarg, &internal_config) : 0;
+
+ /* common parser is not happy */
+ if (ret < 0)
+ break;
+ }
+
+ /* restore getopt lib */
+ optind = old_optind;
+ optopt = old_optopt;
+ optreset = old_optreset;
+ optarg = old_optarg;
+}
+
+/* Parse the argument given in the command line of the application */
+static int
+eal_parse_args(int argc, char **argv)
+{
+ int opt, ret;
+ char **argvopt;
+ int option_index;
+ char *prgname = argv[0];
+ const int old_optind = optind;
+ const int old_optopt = optopt;
+ const int old_optreset = optreset;
+ char * const old_optarg = optarg;
+
+ argvopt = argv;
+ optind = 1;
+ optreset = 1;
+
+ while ((opt = getopt_long(argc, argvopt, eal_short_options,
+ eal_long_options, &option_index)) != EOF) {
+
+ /* getopt is not happy, stop right now */
+ if (opt == '?') {
+ eal_usage(prgname);
+ ret = -1;
+ goto out;
+ }
+
+ ret = eal_parse_common_option(opt, optarg, &internal_config);
+ /* common parser is not happy */
+ if (ret < 0) {
+ eal_usage(prgname);
+ ret = -1;
+ goto out;
+ }
+ /* common parser handled this option */
+ if (ret == 0)
+ continue;
+
+ switch (opt) {
+ case 'h':
+ eal_usage(prgname);
+ exit(EXIT_SUCCESS);
+ default:
+ if (opt < OPT_LONG_MIN_NUM && isprint(opt)) {
+ RTE_LOG(ERR, EAL, "Option %c is not supported "
+ "on FreeBSD\n", opt);
+ } else if (opt >= OPT_LONG_MIN_NUM &&
+ opt < OPT_LONG_MAX_NUM) {
+ RTE_LOG(ERR, EAL, "Option %s is not supported "
+ "on FreeBSD\n",
+ eal_long_options[option_index].name);
+ } else {
+ RTE_LOG(ERR, EAL, "Option %d is not supported "
+ "on FreeBSD\n", opt);
+ }
+ eal_usage(prgname);
+ ret = -1;
+ goto out;
+ }
+ }
+
+ if (eal_adjust_config(&internal_config) != 0) {
+ ret = -1;
+ goto out;
+ }
+
+ /* sanity checks */
+ if (eal_check_common_options(&internal_config) != 0) {
+ eal_usage(prgname);
+ ret = -1;
+ goto out;
+ }
+
+ if (optind >= 0)
+ argv[optind-1] = prgname;
+ ret = optind-1;
+
+out:
+ /* restore getopt lib */
+ optind = old_optind;
+ optopt = old_optopt;
+ optreset = old_optreset;
+ optarg = old_optarg;
+
+ 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 */
+int
+rte_eal_iopl_init(void)
+{
+ static int fd;
+
+ fd = open("/dev/io", O_RDWR);
+ if (fd < 0)
+ return -1;
+ /* keep fd open for iopl */
+ 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);
+ char cpuset[RTE_CPU_AFFINITY_STR_LEN];
+ char thread_name[RTE_MAX_THREAD_NAME_LEN];
+
+ 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");
+
+ eal_log_level_parse(argc, argv);
+
+ /* set log level as early as possible */
+ rte_set_log_level(internal_config.log_level);
+
+ if (rte_eal_cpu_init() < 0)
+ rte_panic("Cannot detect lcores\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_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");
+
+ eal_check_mem_on_local_socket();
+
+ if (eal_plugins_init() < 0)
+ rte_panic("Cannot init plugins\n");
+
+ eal_thread_init_master(rte_config.master_lcore);
+
+ ret = eal_thread_dump_affinity(cpuset, RTE_CPU_AFFINITY_STR_LEN);
+
+ RTE_LOG(DEBUG, EAL, "Master lcore %u is ready (tid=%p;cpuset=[%s%s])\n",
+ rte_config.master_lcore, thread_id, cpuset,
+ ret == 0 ? "" : "...");
+
+ if (rte_eal_dev_init() < 0)
+ rte_panic("Cannot init pmd 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");
+
+ /* Set thread_name for aid in debugging. */
+ snprintf(thread_name, RTE_MAX_THREAD_NAME_LEN,
+ "lcore-slave-%d", i);
+ pthread_set_name_np(lcore_config[i].thread_id, thread_name);
+ }
+
+ /*
+ * 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();
+
+ /* Probe & Initialize PCI devices */
+ if (rte_eal_pci_probe())
+ rte_panic("Cannot probe PCI\n");
+
+ rte_eal_mcfg_complete();
+
+ 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;
+}
Code Review / deb_dpdk.git / blobdiff