| /* pcu_main.cpp |
| * |
| * Copyright (C) 2012 Ivan Klyuchnikov |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version 2 |
| * of the License, or (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| */ |
| |
| #include <pcu_l1_if.h> |
| #include <gprs_rlcmac.h> |
| #include <gprs_debug.h> |
| #include <unistd.h> |
| #include <stdbool.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <errno.h> |
| #include <getopt.h> |
| #include <signal.h> |
| #include <sched.h> |
| #include <bts.h> |
| #include <osmocom/pcu/pcuif_proto.h> |
| #include "gprs_bssgp_pcu.h" |
| |
| extern "C" { |
| #include "pcu_vty.h" |
| #include "coding_scheme.h" |
| #include <osmocom/gprs/gprs_bssgp.h> |
| #include <osmocom/gprs/gprs_ns2.h> |
| #include <osmocom/vty/telnet_interface.h> |
| #include <osmocom/vty/command.h> |
| #include <osmocom/vty/vty.h> |
| #include <osmocom/vty/ports.h> |
| #include <osmocom/vty/logging.h> |
| #include <osmocom/vty/cpu_sched_vty.h> |
| #include <osmocom/core/rate_ctr.h> |
| #include <osmocom/core/select.h> |
| #include <osmocom/core/application.h> |
| #include <osmocom/core/msgb.h> |
| #include <osmocom/core/stats.h> |
| #include <osmocom/core/gsmtap.h> |
| #include <osmocom/core/gsmtap_util.h> |
| } |
| |
| extern struct gprs_nsvc *nsvc; |
| uint16_t spoof_mcc = 0, spoof_mnc = 0; |
| bool spoof_mnc_3_digits = false; |
| static int config_given = 0; |
| static char *config_file = strdup("osmo-pcu.cfg"); |
| extern struct vty_app_info pcu_vty_info; |
| void *tall_pcu_ctx = NULL; |
| extern void *bv_tall_ctx; |
| static int quit = 0; |
| static int rt_prio = -1; |
| static bool daemonize = false; |
| static const char *gsmtap_addr; |
| |
| static void print_help() |
| { |
| printf( "Some useful options:\n" |
| " -h --help This text\n" |
| " -c --config-file Specify the filename of the config file\n" |
| " -m --mcc MCC Use given MCC instead of value provided by BTS\n" |
| " -n --mnc MNC Use given MNC instead of value provided by BTS\n" |
| " -V --version Print version\n" |
| " -D --daemonize Fork the process into a background daemon\n" |
| "\nVTY reference generation:\n" |
| " --vty-ref-mode MODE VTY reference generation mode (e.g. 'expert').\n" |
| " --vty-ref-xml Generate the VTY reference XML output and exit.\n" |
| ); |
| } |
| |
| static void handle_long_options(const char *prog_name, const int long_option) |
| { |
| static int vty_ref_mode = VTY_REF_GEN_MODE_DEFAULT; |
| |
| switch (long_option) { |
| case 1: |
| vty_ref_mode = get_string_value(vty_ref_gen_mode_names, optarg); |
| if (vty_ref_mode < 0) { |
| fprintf(stderr, "%s: Unknown VTY reference generation " |
| "mode '%s'\n", prog_name, optarg); |
| exit(2); |
| } |
| break; |
| case 2: |
| fprintf(stderr, "Generating the VTY reference in mode '%s' (%s)\n", |
| get_value_string(vty_ref_gen_mode_names, vty_ref_mode), |
| get_value_string(vty_ref_gen_mode_desc, vty_ref_mode)); |
| vty_dump_xml_ref_mode(stdout, (enum vty_ref_gen_mode) vty_ref_mode); |
| exit(0); |
| default: |
| fprintf(stderr, "%s: error parsing cmdline options\n", prog_name); |
| exit(2); |
| } |
| } |
| |
| /* FIXME: finally get some option parsing code into libosmocore */ |
| static void handle_options(int argc, char **argv) |
| { |
| while (1) { |
| int option_idx = 0, c; |
| static int long_option = 0; |
| static const struct option long_options[] = { |
| { "help", 0, 0, 'h' }, |
| { "config-file", 1, 0, 'c' }, |
| { "mcc", 1, 0, 'm' }, |
| { "mnc", 1, 0, 'n' }, |
| { "version", 0, 0, 'V' }, |
| { "realtime", 1, 0, 'r' }, |
| { "daemonize", 0, 0, 'D' }, |
| { "exit", 0, 0, 'e' }, |
| { "gsmtap-ip", 1, 0, 'i' }, |
| { "vty-ref-mode", 1, &long_option, 1 }, |
| { "vty-ref-xml", 0, &long_option, 2 }, |
| { 0, 0, 0, 0 } |
| }; |
| |
| c = getopt_long(argc, argv, "hc:m:n:Vr:De:i:", |
| long_options, &option_idx); |
| if (c == -1) |
| break; |
| |
| switch (c) { |
| case 'h': |
| print_help(); |
| exit(0); |
| break; |
| case 0: |
| handle_long_options(argv[0], long_option); |
| break; |
| case 'c': |
| free(config_file); |
| config_file = strdup(optarg); |
| config_given = 1; |
| break; |
| case 'm': |
| spoof_mcc = atoi(optarg); |
| break; |
| case 'n': |
| if (osmo_mnc_from_str(optarg, &spoof_mnc, &spoof_mnc_3_digits)) { |
| fprintf(stderr, "Error decoding MNC '%s'\n", optarg); |
| exit(1); |
| } |
| break; |
| case 'V': |
| print_version(1); |
| exit(0); |
| break; |
| case 'i': |
| gsmtap_addr = optarg; |
| fprintf(stderr, "Command line argument '-i' is deprecated, use VTY " |
| "parameter 'gsmtap-remote-host %s' instead.\n", gsmtap_addr); |
| break; |
| case 'r': |
| rt_prio = atoi(optarg); |
| fprintf(stderr, "Command line argument '-r' is deprecated, use VTY " |
| "cpu-sched node setting 'policy rr %d' instead.\n", rt_prio); |
| break; |
| case 'D': |
| daemonize = true; |
| break; |
| case 'e': |
| fprintf(stderr, "Warning: Option '-e' is deprecated!\n"); |
| break; |
| default: |
| fprintf(stderr, "Unknown option '%c'\n", c); |
| exit(0); |
| break; |
| } |
| } |
| } |
| |
| void sighandler(int sigset) |
| { |
| if (sigset == SIGPIPE) |
| return; |
| |
| fprintf(stderr, "Signal %d received.\n", sigset); |
| |
| switch (sigset) { |
| case SIGINT: |
| case SIGTERM: |
| /* If another signal is received afterwards, the program |
| * is terminated without finishing shutdown process. |
| */ |
| signal(SIGINT, SIG_DFL); |
| signal(SIGTERM, SIG_DFL); |
| signal(SIGPIPE, SIG_DFL); |
| signal(SIGABRT, SIG_DFL); |
| signal(SIGUSR1, SIG_DFL); |
| signal(SIGUSR2, SIG_DFL); |
| |
| quit = 1; |
| break; |
| case SIGABRT: |
| /* in case of abort, we want to obtain a talloc report and |
| * then run default SIGABRT handler, who will generate coredump |
| * and abort the process. abort() should do this for us after we |
| * return, but program wouldn't exit if an external SIGABRT is |
| * received. |
| */ |
| talloc_report_full(tall_pcu_ctx, stderr); |
| signal(SIGABRT, SIG_DFL); |
| raise(SIGABRT); |
| break; |
| case SIGUSR1: |
| case SIGUSR2: |
| talloc_report_full(tall_pcu_ctx, stderr); |
| break; |
| } |
| } |
| |
| int main(int argc, char *argv[]) |
| { |
| struct sched_param param; |
| struct gprs_pcu *pcu; |
| int rc; |
| |
| /* tall_pcu_ctx may already have been initialized in bts.cpp during early_init(). */ |
| if (!tall_pcu_ctx) { |
| tall_pcu_ctx = talloc_named_const(NULL, 1, "Osmo-PCU context"); |
| if (!tall_pcu_ctx) |
| return -ENOMEM; |
| osmo_init_logging2(tall_pcu_ctx, &gprs_log_info); |
| } |
| |
| pcu = gprs_pcu_alloc(tall_pcu_ctx); |
| the_pcu = pcu; /* globally avaialable object */ |
| |
| pcu->pcu_sock_path = talloc_strdup(tall_pcu_ctx, PCU_SOCK_DEFAULT); |
| |
| osmo_fsm_log_addr(false); |
| msgb_talloc_ctx_init(tall_pcu_ctx, 0); |
| |
| osmo_stats_init(tall_pcu_ctx); |
| rate_ctr_init(tall_pcu_ctx); |
| |
| pcu_vty_info.tall_ctx = tall_pcu_ctx; |
| vty_init(&pcu_vty_info); |
| pcu_vty_init(); |
| osmo_cpu_sched_vty_init(tall_pcu_ctx); |
| logging_vty_add_deprecated_subsys(tall_pcu_ctx, "bssgp"); |
| |
| handle_options(argc, argv); |
| if ((!!spoof_mcc) + (!!spoof_mnc) == 1) { |
| fprintf(stderr, "--mcc and --mnc must be specified " |
| "together.\n"); |
| exit(0); |
| } |
| |
| pcu->nsi = gprs_ns2_instantiate(tall_pcu_ctx, gprs_ns_prim_cb, NULL); |
| if (!pcu->nsi) { |
| LOGP(DBSSGP, LOGL_ERROR, "Failed to create NS instance\n"); |
| exit(1); |
| } |
| bssgp_set_bssgp_callback(gprs_gp_send_cb, pcu->nsi); |
| gprs_ns2_vty_init(pcu->nsi); |
| |
| rc = vty_read_config_file(config_file, NULL); |
| if (rc < 0 && config_given) { |
| fprintf(stderr, "Failed to parse the config file: '%s'\n", |
| config_file); |
| exit(1); |
| } |
| if (rc < 0) |
| fprintf(stderr, "No config file: '%s' Using default config.\n", |
| config_file); |
| |
| /* Accept a GSMTAP host from VTY config, but a commandline option overrides that. */ |
| if (gsmtap_addr) { |
| if (pcu->gsmtap_remote_host != NULL) { |
| LOGP(DLGLOBAL, LOGL_NOTICE, |
| "Command line argument '-i %s' overrides " |
| "'gsmtap-remote-host %s' from the config file\n", |
| gsmtap_addr, pcu->gsmtap_remote_host); |
| talloc_free(pcu->gsmtap_remote_host); |
| } |
| pcu->gsmtap_remote_host = talloc_strdup(pcu, gsmtap_addr); |
| } |
| |
| if (pcu->gsmtap_remote_host) { |
| LOGP(DLGLOBAL, LOGL_NOTICE, |
| "Setting up GSMTAP Um forwarding to '%s:%u'\n", |
| pcu->gsmtap_remote_host, GSMTAP_UDP_PORT); |
| pcu->gsmtap = gsmtap_source_init(pcu->gsmtap_remote_host, |
| GSMTAP_UDP_PORT, 1); |
| if (pcu->gsmtap == NULL) { |
| fprintf(stderr, "Failed during gsmtap_source_init()\n"); |
| exit(1); |
| } |
| gsmtap_source_add_sink(pcu->gsmtap); |
| } |
| |
| rc = telnet_init_dynif(tall_pcu_ctx, NULL, vty_get_bind_addr(), |
| OSMO_VTY_PORT_PCU); |
| if (rc < 0) { |
| fprintf(stderr, "Error initializing telnet\n"); |
| exit(1); |
| } |
| |
| if (!pcu->alloc_algorithm) |
| pcu->alloc_algorithm = alloc_algorithm_dynamic; |
| |
| rc = pcu_l1if_open(); |
| |
| if (rc < 0) |
| return rc; |
| |
| signal(SIGINT, sighandler); |
| signal(SIGTERM, sighandler); |
| signal(SIGPIPE, sighandler); |
| signal(SIGABRT, sighandler); |
| signal(SIGUSR1, sighandler); |
| signal(SIGUSR2, sighandler); |
| osmo_init_ignore_signals(); |
| |
| /* enable realtime priority for us */ |
| if (rt_prio != -1) { |
| memset(¶m, 0, sizeof(param)); |
| param.sched_priority = rt_prio; |
| rc = sched_setscheduler(getpid(), SCHED_RR, ¶m); |
| if (rc != 0) { |
| fprintf(stderr, "Setting SCHED_RR priority(%d) failed: %s\n", |
| param.sched_priority, strerror(errno)); |
| exit(1); |
| } |
| } |
| |
| if (daemonize) { |
| rc = osmo_daemonize(); |
| if (rc < 0) { |
| perror("Error during daemonize"); |
| exit(1); |
| } |
| } |
| |
| while (!quit) { |
| osmo_select_main(0); |
| } |
| |
| telnet_exit(); |
| |
| pcu_l1if_close(); |
| |
| TALLOC_FREE(the_pcu); |
| talloc_report_full(tall_pcu_ctx, stderr); |
| talloc_free(tall_pcu_ctx); |
| |
| return 0; |
| } |