1 /* Main method of the layer2/3 stack */
3 /* (C) 2010 by Holger Hans Peter Freyther
4 * (C) 2010 by Harald Welte <laforge@gnumonks.org>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License along
19 * with this program; if not, write to the Free Software Foundation, Inc.,
20 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
24 #include <osmocom/bb/common/osmocom_data.h>
25 #include <osmocom/bb/common/l1ctl.h>
26 #include <osmocom/bb/common/l1l2_interface.h>
27 #include <osmocom/bb/common/sap_interface.h>
28 #include <osmocom/bb/misc/layer3.h>
29 #include <osmocom/bb/common/lapdm.h>
30 #include <osmocom/bb/common/logging.h>
31 #include <osmocom/bb/common/l23_app.h>
33 #include <osmocore/msgb.h>
34 #include <osmocore/talloc.h>
35 #include <osmocore/select.h>
36 #include <osmocore/linuxlist.h>
37 #include <osmocore/gsmtap_util.h>
39 #include <arpa/inet.h>
49 struct log_target *stderr_target;
52 static char *layer2_socket_path = "/tmp/osmocom_l2";
53 static char *sap_socket_path = "/tmp/osmocom_sap";
54 struct llist_head ms_list;
55 static struct osmocom_ms *ms = NULL;
56 static uint32_t gsmtap_ip = 0;
57 unsigned short vty_port = 4247;
58 int (*l23_app_work) (struct osmocom_ms *ms) = NULL;
59 int (*l23_app_exit) (struct osmocom_ms *ms) = NULL;
62 const char *openbsc_copyright =
65 "License GPLv2+: GNU GPL version 2 or later "
66 "<http://gnu.org/licenses/gpl.html>\n"
67 "This is free software: you are free to change and redistribute it.\n"
68 "There is NO WARRANTY, to the extent permitted by law.\n\n";
70 static void print_usage(const char *app)
72 printf("Usage: %s\n", app);
75 static void print_help()
78 struct l23_app_info *app = l23_app_info();
80 if (app && app->cfg_supported != 0)
81 options = app->cfg_supported();
83 printf(" Some help...\n");
84 printf(" -h --help this text\n");
85 printf(" -s --socket /tmp/osmocom_l2. Path to the unix "
86 "domain socket (l2)\n");
88 if (options & L23_OPT_SAP)
89 printf(" -S --sap /tmp/osmocom_sap. Path to the "
90 "unix domain socket (BTSAP)\n");
92 if (options & L23_OPT_ARFCN)
93 printf(" -a --arfcn NR The ARFCN to be used for layer2.\n");
95 if (options & L23_OPT_TAP)
96 printf(" -i --gsmtap-ip The destination IP used for GSMTAP.\n");
98 if (options & L23_OPT_VTY)
99 printf(" -v --vty-port The VTY port number to telnet "
100 "to. (default %u)\n", vty_port);
102 if (options & L23_OPT_DBG)
103 printf(" -d --debug Change debug flags.\n");
106 static void handle_options(int argc, char **argv)
108 struct sockaddr_in gsmtap;
110 int option_index = 0, c;
111 static struct option long_options[] = {
113 {"socket", 1, 0, 's'},
115 {"arfcn", 1, 0, 'a'},
116 {"gsmtap-ip", 1, 0, 'i'},
117 {"vty-port", 1, 0, 'v'},
118 {"debug", 1, 0, 'd'},
122 c = getopt_long(argc, argv, "hs:S:a:i:v:d:",
123 long_options, &option_index);
129 print_usage(argv[0]);
134 layer2_socket_path = talloc_strdup(l23_ctx, optarg);
137 sap_socket_path = talloc_strdup(l23_ctx, optarg);
140 ms->test_arfcn = atoi(optarg);
143 if (!inet_aton(optarg, &gsmtap.sin_addr)) {
147 gsmtap_ip = ntohl(gsmtap.sin_addr.s_addr);
150 vty_port = atoi(optarg);
153 log_parse_category_mask(stderr_target, optarg);
161 void sighandler(int sigset)
165 if (sigset == SIGHUP || sigset == SIGPIPE)
168 fprintf(stderr, "Signal %d recevied.\n", sigset);
170 rc = l23_app_exit(ms);
176 static void print_copyright()
178 struct l23_app_info *app;
179 app = l23_app_info();
180 printf(openbsc_copyright,
181 app && app->copyright ? app->copyright : "",
182 app && app->contribution ? app->contribution : "");
185 int main(int argc, char **argv)
189 INIT_LLIST_HEAD(&ms_list);
191 stderr_target = log_target_create_stderr();
192 log_add_target(stderr_target);
193 log_set_all_filter(stderr_target, 1);
195 l23_ctx = talloc_named_const(NULL, 1, "layer2 context");
197 ms = talloc_zero(l23_ctx, struct osmocom_ms);
199 fprintf(stderr, "Failed to allocate MS\n");
205 llist_add_tail(&ms->entity, &ms_list);
207 sprintf(ms->name, "1");
209 ms->test_arfcn = 871;
211 handle_options(argc, argv);
213 rc = layer2_open(ms, layer2_socket_path);
215 fprintf(stderr, "Failed during layer2_open()\n");
219 rc = sap_open(ms, sap_socket_path);
221 fprintf(stderr, "Failed during sap_open(), no SIM reader\n");
223 lapdm_init(&ms->l2_entity.lapdm_dcch, ms);
224 lapdm_init(&ms->l2_entity.lapdm_acch, ms);
226 rc = l23_app_init(ms);
231 rc = gsmtap_init(gsmtap_ip);
233 fprintf(stderr, "Failed during gsmtap_init()\n");
238 signal(SIGINT, sighandler);
239 signal(SIGHUP, sighandler);
240 signal(SIGTERM, sighandler);
241 signal(SIGPIPE, sighandler);