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 <osmocom/core/msgb.h>
34 #include <osmocom/core/talloc.h>
35 #include <osmocom/core/select.h>
36 #include <osmocom/core/linuxlist.h>
37 #include <osmocom/core/gsmtap_util.h>
38 #include <osmocom/core/gsmtap.h>
39 #include <osmocom/core/utils.h>
41 #include <arpa/inet.h>
51 struct log_target *stderr_target;
55 static char *layer2_socket_path = "/tmp/osmocom_l2";
56 static char *sap_socket_path = "/tmp/osmocom_sap";
57 struct llist_head ms_list;
58 static struct osmocom_ms *ms = NULL;
59 static char *gsmtap_ip = NULL;
61 unsigned short vty_port = 4247;
62 int (*l23_app_work) (struct osmocom_ms *ms) = NULL;
63 int (*l23_app_exit) (struct osmocom_ms *ms) = NULL;
65 struct gsmtap_inst *gsmtap_inst;
67 const char *openbsc_copyright =
70 "License GPLv2+: GNU GPL version 2 or later "
71 "<http://gnu.org/licenses/gpl.html>\n"
72 "This is free software: you are free to change and redistribute it.\n"
73 "There is NO WARRANTY, to the extent permitted by law.\n\n";
75 static void print_usage(const char *app)
77 printf("Usage: %s\n", app);
80 static void print_help()
83 struct l23_app_info *app = l23_app_info();
85 if (app && app->cfg_supported != 0)
86 options = app->cfg_supported();
88 printf(" Some help...\n");
89 printf(" -h --help this text\n");
90 printf(" -s --socket /tmp/osmocom_l2. Path to the unix "
91 "domain socket (l2)\n");
93 if (options & L23_OPT_SAP)
94 printf(" -S --sap /tmp/osmocom_sap. Path to the "
95 "unix domain socket (BTSAP)\n");
97 if (options & L23_OPT_ARFCN)
98 printf(" -a --arfcn NR The ARFCN to be used for layer2.\n");
100 if (options & L23_OPT_TAP)
101 printf(" -i --gsmtap-ip The destination IP used for GSMTAP.\n");
103 if (options & L23_OPT_VTY)
104 printf(" -v --vty-port The VTY port number to telnet "
105 "to. (default %u)\n", vty_port);
107 if (options & L23_OPT_DBG)
108 printf(" -d --debug Change debug flags.\n");
110 if (app && app->cfg_print_help)
111 app->cfg_print_help();
114 static void build_config(char **opt, struct option **option)
116 struct l23_app_info *app;
117 struct option *app_opp = NULL;
118 int app_len = 0, len;
120 static struct option long_options[] = {
122 {"socket", 1, 0, 's'},
124 {"arfcn", 1, 0, 'a'},
125 {"gsmtap-ip", 1, 0, 'i'},
126 {"vty-port", 1, 0, 'v'},
127 {"debug", 1, 0, 'd'},
131 app = l23_app_info();
132 *opt = talloc_asprintf(l23_ctx, "hs:S:a:i:v:d:%s",
133 app && app->getopt_string ? app->getopt_string : "");
135 len = ARRAY_SIZE(long_options);
136 if (app && app->cfg_getopt_opt)
137 app_len = app->cfg_getopt_opt(&app_opp);
139 *option = talloc_zero_array(l23_ctx, struct option, len + app_len + 1);
140 memcpy(*option, long_options, sizeof(long_options));
141 memcpy(*option + len, app_opp, app_len * sizeof(struct option));
144 static void handle_options(int argc, char **argv)
146 struct l23_app_info *app = l23_app_info();
147 struct option *long_options;
150 build_config(&opt, &long_options);
153 int option_index = 0, c;
155 c = getopt_long(argc, argv, opt,
156 long_options, &option_index);
162 print_usage(argv[0]);
167 layer2_socket_path = talloc_strdup(l23_ctx, optarg);
170 sap_socket_path = talloc_strdup(l23_ctx, optarg);
173 ms->test_arfcn = atoi(optarg);
179 vty_port = atoi(optarg);
182 log_parse_category_mask(stderr_target, optarg);
185 if (app && app->cfg_handle_opt)
186 app->cfg_handle_opt(c, optarg);
192 talloc_free(long_options);
195 void sighandler(int sigset)
199 if (sigset == SIGHUP || sigset == SIGPIPE)
202 fprintf(stderr, "Signal %d recevied.\n", sigset);
204 rc = l23_app_exit(ms);
210 static void print_copyright()
212 struct l23_app_info *app;
213 app = l23_app_info();
214 printf(openbsc_copyright,
215 app && app->copyright ? app->copyright : "",
216 app && app->contribution ? app->contribution : "");
219 int main(int argc, char **argv)
223 INIT_LLIST_HEAD(&ms_list);
225 stderr_target = log_target_create_stderr();
226 log_add_target(stderr_target);
227 log_set_all_filter(stderr_target, 1);
229 l23_ctx = talloc_named_const(NULL, 1, "layer2 context");
231 ms = talloc_zero(l23_ctx, struct osmocom_ms);
233 fprintf(stderr, "Failed to allocate MS\n");
239 llist_add_tail(&ms->entity, &ms_list);
241 sprintf(ms->name, "1");
243 ms->test_arfcn = 871;
245 handle_options(argc, argv);
247 rc = layer2_open(ms, layer2_socket_path);
249 fprintf(stderr, "Failed during layer2_open()\n");
253 rc = sap_open(ms, sap_socket_path);
255 fprintf(stderr, "Failed during sap_open(), no SIM reader\n");
257 ms->lapdm_channel.lapdm_dcch.l1_ctx = ms;
258 ms->lapdm_channel.lapdm_dcch.l3_ctx = ms;
259 ms->lapdm_channel.lapdm_acch.l1_ctx = ms;
260 ms->lapdm_channel.lapdm_acch.l3_ctx = ms;
261 lapdm_channel_init(&ms->lapdm_channel, LAPDM_MODE_MS);
262 lapdm_channel_set_l1(&ms->lapdm_channel, l1ctl_ph_prim_cb, ms);
264 rc = l23_app_init(ms);
269 gsmtap_inst = gsmtap_source_init(gsmtap_ip, GSMTAP_UDP_PORT, 1);
271 fprintf(stderr, "Failed during gsmtap_init()\n");
274 gsmtap_source_add_sink(gsmtap_inst);
277 signal(SIGINT, sighandler);
278 signal(SIGHUP, sighandler);
279 signal(SIGTERM, sighandler);
280 signal(SIGPIPE, sighandler);