368 lines
9.3 KiB
C++
368 lines
9.3 KiB
C++
/* 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.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
#include <pcu_l1_if.h>
|
|
#include <gprs_rlcmac.h>
|
|
#include <gsm_timer.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 <gprs_coding_scheme.h>
|
|
#include <osmocom/pcu/pcuif_proto.h>
|
|
#include "gprs_bssgp_pcu.h"
|
|
|
|
extern "C" {
|
|
#include "pcu_vty.h"
|
|
#include <osmocom/gprs/gprs_bssgp.h>
|
|
#include <osmocom/gprs/gprs_ns.h>
|
|
#include <osmocom/vty/telnet_interface.h>
|
|
#include <osmocom/vty/command.h>
|
|
#include <osmocom/vty/vty.h>
|
|
#include <osmocom/vty/ports.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 = "localhost"; // FIXME: use gengetopt's default value instead
|
|
|
|
static void print_help()
|
|
{
|
|
printf( "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"
|
|
" -r --realtime PRIO Use SCHED_RR with the specified "
|
|
"priority\n"
|
|
" -D --daemonize Fork the process into a background "
|
|
"daemon\n"
|
|
" -i --gsmtap-ip The destination IP used for GSMTAP\n"
|
|
);
|
|
}
|
|
|
|
/* 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 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' },
|
|
{ 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 '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;
|
|
break;
|
|
case 'r':
|
|
rt_prio = atoi(optarg);
|
|
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 return to the caller, who will abort the process
|
|
*/
|
|
case SIGUSR1:
|
|
case SIGUSR2:
|
|
talloc_report_full(tall_pcu_ctx, stderr);
|
|
break;
|
|
}
|
|
}
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
struct sched_param param;
|
|
struct gprs_rlcmac_bts *bts;
|
|
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);
|
|
}
|
|
|
|
bts = bts_main_data();
|
|
bts->fc_interval = 1;
|
|
bts->initial_cs_dl = bts->initial_cs_ul = 1;
|
|
bts->initial_mcs_dl = bts->initial_mcs_ul = 1;
|
|
bts->cs1 = 1;
|
|
bts->n3101 = 10;
|
|
bts->n3103 = 4;
|
|
bts->n3105 = 8;
|
|
bts->alpha = 0; /* a = 0.0 */
|
|
bts->si13_is_set = false;
|
|
bts->cs_adj_enabled = 1;
|
|
bts->cs_adj_upper_limit = 33; /* Decrease CS if the error rate is above */
|
|
bts->cs_adj_lower_limit = 10; /* Increase CS if the error rate is below */
|
|
bts->max_cs_ul = MAX_GPRS_CS;
|
|
bts->max_cs_dl = MAX_GPRS_CS;
|
|
bts->max_mcs_ul = MAX_EDGE_MCS;
|
|
bts->max_mcs_dl = MAX_EDGE_MCS;
|
|
/* CS-1 to CS-4 */
|
|
bts->cs_lqual_ranges[0].low = -256;
|
|
bts->cs_lqual_ranges[0].high = 6;
|
|
bts->cs_lqual_ranges[1].low = 5;
|
|
bts->cs_lqual_ranges[1].high = 8;
|
|
bts->cs_lqual_ranges[2].low = 7;
|
|
bts->cs_lqual_ranges[2].high = 13;
|
|
bts->cs_lqual_ranges[3].low = 12;
|
|
bts->cs_lqual_ranges[3].high = 256;
|
|
|
|
/* MCS-1 to MCS-9 */
|
|
/* Default thresholds are referenced from literature */
|
|
/* Fig. 2.3, Chapter 2, Optimizing Wireless Communication Systems, Springer (2009) */
|
|
bts->mcs_lqual_ranges[0].low = -256;
|
|
bts->mcs_lqual_ranges[0].high = 6;
|
|
bts->mcs_lqual_ranges[1].low = 5;
|
|
bts->mcs_lqual_ranges[1].high = 8;
|
|
bts->mcs_lqual_ranges[2].low = 7;
|
|
bts->mcs_lqual_ranges[2].high = 13;
|
|
bts->mcs_lqual_ranges[3].low = 12;
|
|
bts->mcs_lqual_ranges[3].high = 15;
|
|
bts->mcs_lqual_ranges[4].low = 14;
|
|
bts->mcs_lqual_ranges[4].high = 17;
|
|
bts->mcs_lqual_ranges[5].low = 16;
|
|
bts->mcs_lqual_ranges[5].high = 18;
|
|
bts->mcs_lqual_ranges[6].low = 17;
|
|
bts->mcs_lqual_ranges[6].high = 20;
|
|
bts->mcs_lqual_ranges[7].low = 19;
|
|
bts->mcs_lqual_ranges[7].high = 24;
|
|
bts->mcs_lqual_ranges[8].low = 23;
|
|
bts->mcs_lqual_ranges[8].high = 256;
|
|
bts->cs_downgrade_threshold = 200;
|
|
|
|
/* TODO: increase them when CRBB decoding is implemented */
|
|
bts->ws_base = 64;
|
|
bts->ws_pdch = 0;
|
|
|
|
bts->llc_codel_interval_msec = LLC_CODEL_USE_DEFAULT;
|
|
bts->llc_idle_ack_csec = 10;
|
|
|
|
/*
|
|
* By default resegmentation is supported in DL
|
|
* can also be configured through VTY
|
|
*/
|
|
bts->dl_arq_type = EGPRS_ARQ1;
|
|
|
|
bts->pcu_sock_path = talloc_strdup(tall_pcu_ctx, PCU_SOCK_DEFAULT);
|
|
|
|
msgb_talloc_ctx_init(tall_pcu_ctx, 0);
|
|
|
|
osmo_stats_init(tall_pcu_ctx);
|
|
rate_ctr_init(tall_pcu_ctx);
|
|
gprs_ns_set_log_ss(DNS);
|
|
bssgp_set_log_ss(DBSSGP);
|
|
|
|
pcu_vty_info.tall_ctx = tall_pcu_ctx;
|
|
vty_init(&pcu_vty_info);
|
|
pcu_vty_init();
|
|
|
|
handle_options(argc, argv);
|
|
if ((!!spoof_mcc) + (!!spoof_mnc) == 1) {
|
|
fprintf(stderr, "--mcc and --mnc must be specified "
|
|
"together.\n");
|
|
exit(0);
|
|
}
|
|
|
|
bts->gsmtap = gsmtap_source_init(gsmtap_addr, GSMTAP_UDP_PORT, 1);
|
|
|
|
if (bts->gsmtap)
|
|
gsmtap_source_add_sink(bts->gsmtap);
|
|
else
|
|
fprintf(stderr, "Failed to initialize GSMTAP for %s\n", gsmtap_addr);
|
|
|
|
bssgp_nsi = gprs_ns_instantiate(&gprs_bssgp_ns_cb, tall_pcu_ctx);
|
|
if (!bssgp_nsi) {
|
|
LOGP(DBSSGP, LOGL_ERROR, "Failed to create NS instance\n");
|
|
exit(1);
|
|
}
|
|
gprs_ns_vty_init(bssgp_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);
|
|
|
|
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 (!bts->alloc_algorithm)
|
|
bts->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_gsm_timers_check();
|
|
osmo_gsm_timers_prepare();
|
|
osmo_gsm_timers_update();
|
|
|
|
osmo_select_main(0);
|
|
}
|
|
|
|
telnet_exit();
|
|
|
|
pcu_l1if_close();
|
|
|
|
bts_cleanup();
|
|
talloc_report_full(tall_pcu_ctx, stderr);
|
|
talloc_free(tall_pcu_ctx);
|
|
|
|
return 0;
|
|
}
|