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-rw-r--r--src/osmo-bts-trx/main.c406
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diff --git a/src/osmo-bts-trx/main.c b/src/osmo-bts-trx/main.c
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+++ b/src/osmo-bts-trx/main.c
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+/* Main program for OsmoBTS-TRX */
+
+/* (C) 2011 by Harald Welte <laforge@gnumonks.org>
+ * (C) 2013 by Andreas Eversberg <jolly@eversberg.eu>
+ *
+ * All Rights Reserved
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation; either version 3 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 Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <stdint.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <getopt.h>
+#include <limits.h>
+#include <sched.h>
+#include <sys/signal.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/ioctl.h>
+
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <net/if.h>
+
+#include <osmocom/core/talloc.h>
+#include <osmocom/core/application.h>
+#include <osmocom/vty/telnet_interface.h>
+#include <osmocom/vty/logging.h>
+#include <osmocom/core/gsmtap.h>
+#include <osmocom/core/gsmtap_util.h>
+#include <osmocom/core/bits.h>
+
+#include <osmo-bts/gsm_data.h>
+#include <osmo-bts/logging.h>
+#include <osmo-bts/abis.h>
+#include <osmo-bts/bts.h>
+#include <osmo-bts/vty.h>
+#include <osmo-bts/bts_model.h>
+#include <osmo-bts/pcu_if.h>
+#include <osmo-bts/l1sap.h>
+
+#include "l1_if.h"
+#include "trx_if.h"
+#include "scheduler.h"
+
+const int pcu_direct = 0;
+
+int quit = 0;
+static const char *config_file = "osmo-bts.cfg";
+static int daemonize = 0;
+static char *gsmtap_ip = 0;
+static int rt_prio = -1;
+static int trx_num = 1;
+char *software_version = "0.0";
+uint8_t abis_mac[6] = { 0, 1, 2, 3, 4, 5 };
+char *bsc_host = "localhost";
+char *bts_id = "1801/0";
+
+// FIXME this is a hack
+static void get_mac(void)
+{
+ struct if_nameindex *ifn = if_nameindex();
+ struct ifreq ifr;
+ int sock;
+ int ret;
+
+ sock = socket(AF_INET, SOCK_STREAM, 0);
+ if (sock < 0)
+ return;
+
+ memset(&ifr, 0, sizeof(ifr));
+ if (!ifn)
+ return;
+ while (ifn->if_name) {
+ strncpy(ifr.ifr_name, ifn->if_name, sizeof(ifr.ifr_name)-1);
+ ret = ioctl(sock, SIOCGIFHWADDR, &ifr);
+ if (ret == 0 && !!memcmp(ifr.ifr_hwaddr.sa_data,
+ "\0\0\0\0\0\0", 6)) {
+ memcpy(abis_mac, ifr.ifr_hwaddr.sa_data, 6);
+ printf("Using MAC address of %s: "
+ "'%02x:%02x:%02x:%02x:%02x:%02x'\n",
+ ifn->if_name,
+ abis_mac[0], abis_mac[1], abis_mac[2],
+ abis_mac[3], abis_mac[4], abis_mac[5]);
+ break;
+ }
+ ifn++;
+ }
+// if_freenameindex(ifn);
+}
+
+int bts_model_init(struct gsm_bts *bts)
+{
+ void *l1h;
+ struct gsm_bts_trx *trx;
+
+ llist_for_each_entry(trx, &bts->trx_list, list) {
+ l1h = l1if_open(trx);
+ if (!l1h) {
+ LOGP(DL1C, LOGL_FATAL, "Cannot open L1 Interface\n");
+ goto error;
+ }
+
+ trx->role_bts.l1h = l1h;
+ trx->nominal_power = 23;
+
+ l1if_reset(l1h);
+ }
+
+ bts_model_vty_init(bts);
+
+ return 0;
+
+error:
+ llist_for_each_entry(trx, &bts->trx_list, list) {
+ l1h = trx->role_bts.l1h;
+ if (l1h)
+ l1if_close(l1h);
+ }
+
+ return -EIO;
+}
+
+/* dummy, since no direct dsp support */
+uint32_t trx_get_hlayer1(struct gsm_bts_trx *trx)
+{
+ return 0;
+}
+
+static void print_help()
+{
+ printf( "Some useful options:\n"
+ " -h --help this text\n"
+ " -d --debug MASK Enable debugging (e.g. -d DRSL:DOML:DLAPDM)\n"
+ " -D --daemonize For the process into a background daemon\n"
+ " -c --config-file Specify the filename of the config file\n"
+ " -s --disable-color Don't use colors in stderr log output\n"
+ " -T --timestamp Prefix every log line with a timestamp\n"
+ " -V --version Print version information and exit\n"
+ " -e --log-level Set a global log-level\n"
+ " -t --trx-num Set number of TRX (default=%d)\n"
+ " -i --gsmtap-ip The destination IP used for GSMTAP.\n"
+ " -r --realtime PRIO Set realtime scheduler with given prio\n"
+ " -I --local-trx-ip Local IP for transceiver to connect (default=%s)\n"
+ ,trx_num, transceiver_ip);
+}
+
+/* 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[] = {
+ /* FIXME: all those are generic Osmocom app options */
+ { "help", 0, 0, 'h' },
+ { "debug", 1, 0, 'd' },
+ { "daemonize", 0, 0, 'D' },
+ { "config-file", 1, 0, 'c' },
+ { "disable-color", 0, 0, 's' },
+ { "timestamp", 0, 0, 'T' },
+ { "version", 0, 0, 'V' },
+ { "log-level", 1, 0, 'e' },
+ { "trx-num", 1, 0, 't' },
+ { "gsmtap-ip", 1, 0, 'i' },
+ { "realtime", 1, 0, 'r' },
+ { "local-trx-ip", 1, 0, 'I' },
+ { 0, 0, 0, 0 }
+ };
+
+ c = getopt_long(argc, argv, "hc:d:Dc:sTVe:t:i:r:I:",
+ long_options, &option_idx);
+ if (c == -1)
+ break;
+
+ switch (c) {
+ case 'h':
+ print_help();
+ exit(0);
+ break;
+ case 's':
+ log_set_use_color(osmo_stderr_target, 0);
+ break;
+ case 'd':
+ log_parse_category_mask(osmo_stderr_target, optarg);
+ break;
+ case 'D':
+ daemonize = 1;
+ break;
+ case 'c':
+ config_file = strdup(optarg);
+ break;
+ case 'T':
+ log_set_print_timestamp(osmo_stderr_target, 1);
+ break;
+ case 'V':
+ print_version(1);
+ exit(0);
+ break;
+ case 'e':
+ log_set_log_level(osmo_stderr_target, atoi(optarg));
+ break;
+ case 't':
+ trx_num = atoi(optarg);
+ if (trx_num < 1)
+ trx_num = 1;
+ break;
+ case 'i':
+ gsmtap_ip = optarg;
+ break;
+ case 'r':
+ rt_prio = atoi(optarg);
+ break;
+ case 'I':
+ transceiver_ip = strdup(optarg);
+ break;
+ default:
+ break;
+ }
+ }
+}
+
+static struct gsm_bts *bts;
+
+static void signal_handler(int signal)
+{
+ fprintf(stderr, "signal %u received\n", signal);
+
+ switch (signal) {
+ case SIGINT:
+ //osmo_signal_dispatch(SS_GLOBAL, S_GLOBAL_SHUTDOWN, NULL);
+ if (!quit)
+ bts_shutdown(bts, "SIGINT");
+ quit++;
+ break;
+ case SIGABRT:
+ case SIGUSR1:
+ case SIGUSR2:
+ talloc_report_full(tall_bts_ctx, stderr);
+ break;
+ default:
+ break;
+ }
+}
+
+static int write_pid_file(char *procname)
+{
+ FILE *outf;
+ char tmp[PATH_MAX+1];
+
+ snprintf(tmp, sizeof(tmp)-1, "/var/run/%s.pid", procname);
+ tmp[PATH_MAX-1] = '\0';
+
+ outf = fopen(tmp, "w");
+ if (!outf)
+ return -1;
+
+ fprintf(outf, "%d\n", getpid());
+
+ fclose(outf);
+
+ return 0;
+}
+
+int main(int argc, char **argv)
+{
+ struct gsm_bts_role_bts *btsb;
+ struct gsm_bts_trx *trx;
+ struct e1inp_line *line;
+ void *tall_msgb_ctx;
+ int rc, i;
+
+ printf("((*))\n |\n / \\ OsmoBTS\n");
+
+ get_mac();
+
+ tall_bts_ctx = talloc_named_const(NULL, 1, "OsmoBTS context");
+ tall_msgb_ctx = talloc_named_const(tall_bts_ctx, 1, "msgb");
+ msgb_set_talloc_ctx(tall_msgb_ctx);
+
+ bts_log_init(NULL);
+
+ handle_options(argc, argv);
+
+ bts = gsm_bts_alloc(tall_bts_ctx);
+ if (!bts) {
+ fprintf(stderr, "Failed to create BTS structure\n");
+ exit(1);
+ }
+ for (i = 1; i < trx_num; i++) {
+ trx = gsm_bts_trx_alloc(bts);
+ if (!trx) {
+ fprintf(stderr, "Failed to TRX structure\n");
+ exit(1);
+ }
+ }
+
+ vty_init(&bts_vty_info);
+ e1inp_vty_init();
+ bts_vty_init(bts, &bts_log_info);
+
+ if (bts_init(bts) < 0) {
+ fprintf(stderr, "unable to to open bts\n");
+ exit(1);
+ }
+ btsb = bts_role_bts(bts);
+ btsb->support.ciphers = CIPHER_A5(1) | CIPHER_A5(2);
+
+ if (gsmtap_ip) {
+ gsmtap = gsmtap_source_init(gsmtap_ip, GSMTAP_UDP_PORT, 1);
+ if (!gsmtap) {
+ fprintf(stderr, "Failed during gsmtap_init()\n");
+ exit(1);
+ }
+ gsmtap_source_add_sink(gsmtap);
+ }
+
+ abis_init(bts);
+
+ rc = vty_read_config_file(config_file, NULL);
+ if (rc < 0) {
+ fprintf(stderr, "Failed to parse the config file: '%s'\n",
+ config_file);
+ exit(1);
+ }
+ if (!settsc_enabled && !setbsic_enabled)
+ settsc_enabled = setbsic_enabled = 1;
+
+ write_pid_file("osmo-bts");
+
+ rc = telnet_init(tall_bts_ctx, NULL, 4241);
+ if (rc < 0) {
+ fprintf(stderr, "Error initializing telnet\n");
+ exit(1);
+ }
+
+ if (pcu_sock_init()) {
+ fprintf(stderr, "PCU L1 socket failed\n");
+ exit(-1);
+ }
+
+ signal(SIGINT, &signal_handler);
+ //signal(SIGABRT, &signal_handler);
+ signal(SIGUSR1, &signal_handler);
+ signal(SIGUSR2, &signal_handler);
+ osmo_init_ignore_signals();
+
+ if (!btsb->bsc_oml_host) {
+ fprintf(stderr, "Cannot start BTS without knowing BSC OML IP\n");
+ exit(1);
+ }
+
+ line = abis_open(bts, btsb->bsc_oml_host, "sysmoBTS");
+ if (!line) {
+ fprintf(stderr, "unable to connect to BSC\n");
+ exit(1);
+ }
+
+ if (daemonize) {
+ rc = osmo_daemonize();
+ if (rc < 0) {
+ perror("Error during daemonize");
+ exit(1);
+ }
+ }
+
+ if (rt_prio != -1) {
+ struct sched_param schedp;
+
+ /* high priority scheduling required for handling bursts */
+ memset(&schedp, 0, sizeof(schedp));
+ schedp.sched_priority = rt_prio;
+ rc = sched_setscheduler(0, SCHED_RR, &schedp);
+ if (rc) {
+ fprintf(stderr, "Error setting SCHED_RR with prio %d\n",
+ rt_prio);
+ }
+ }
+
+ while (quit < 2) {
+ log_reset_context();
+ osmo_select_main(0);
+ }
+
+#if 0
+ telnet_exit();
+
+ talloc_report_full(tall_bts_ctx, stderr);
+#endif
+
+ return 0;
+}
+