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/* 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 <gprs_bssgp_pcu.h>
#include <arpa/inet.h>
#include <pcu_l1_if.h>
#include <gprs_rlcmac.h>
#include <gsm_timer.h>
#include <gprs_debug.h>
#include <unistd.h>
#include <getopt.h>
struct gprs_rlcmac_bts *gprs_rlcmac_bts;
uint16_t spoof_mcc = 0, spoof_mnc = 0;
// TODO: We should move this parameters to config file.
#define SGSN_IP "127.0.0.1"
#define SGSN_PORT 23000
#define NSVCI 4
static void print_help()
{
printf( "Some useful options:\n"
" -h --help this text\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"
);
}
/* 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' },
{ "mcc", 0, 0, 'm' },
{ "mnc", 0, 0, 'n' },
{ 0, 0, 0, 0 }
};
c = getopt_long(argc, argv, "hm:n:",
long_options, &option_idx);
if (c == -1)
break;
switch (c) {
case 'h':
print_help();
exit(0);
break;
case 'm':
spoof_mcc = atoi(optarg);
break;
case 'n':
spoof_mnc = atoi(optarg);
break;
default:
fprintf(stderr, "Unknown option '%c'\n", c);
exit(0);
break;
}
}
}
int sgsn_ns_cb(enum gprs_ns_evt event, struct gprs_nsvc *nsvc, struct msgb *msg, uint16_t bvci)
{
int rc = 0;
switch (event) {
case GPRS_NS_EVT_UNIT_DATA:
/* hand the message into the BSSGP implementation */
rc = gprs_bssgp_pcu_rcvmsg(msg);
break;
default:
LOGP(DPCU, LOGL_ERROR, "RLCMAC: Unknown event %u from NS\n", event);
if (msg)
talloc_free(msg);
rc = -EIO;
break;
}
return rc;
}
int main(int argc, char *argv[])
{
uint16_t nsvci = NSVCI;
struct gprs_ns_inst *sgsn_nsi;
struct gprs_nsvc *nsvc;
struct gprs_rlcmac_bts *bts;
bts = gprs_rlcmac_bts = talloc_zero(NULL, struct gprs_rlcmac_bts);
if (!gprs_rlcmac_bts)
return -ENOMEM;
gprs_rlcmac_bts->initial_cs = 1;
bts->initial_cs = 1;
bts->cs1 = 1;
bts->t3142 = 20;
bts->t3169 = 5;
bts->t3191 = 5;
bts->t3193_msec = 100;
bts->t3195 = 5;
bts->n3101 = 10;
bts->n3103 = 4;
bts->n3105 = 8;
osmo_init_logging(&gprs_log_info);
handle_options(argc, argv);
if ((!!spoof_mcc) + (!!spoof_mnc) == 1) {
fprintf(stderr, "--mcc and --mnc must be specified "
"together.\n");
exit(0);
}
pcu_l1if_open();
sgsn_nsi = gprs_ns_instantiate(&sgsn_ns_cb, NULL);
bssgp_nsi = sgsn_nsi;
if (!bssgp_nsi)
{
LOGP(DPCU, LOGL_ERROR, "Unable to instantiate NS\n");
exit(1);
}
bctx = btsctx_alloc(BVCI, NSEI);
bctx->cell_id = CELL_ID;
bctx->nsei = NSEI;
bctx->ra_id.mnc = spoof_mcc ? : MNC;
bctx->ra_id.mcc = spoof_mnc ? : MCC;
bctx->ra_id.lac = PCU_LAC;
bctx->ra_id.rac = PCU_RAC;
bctx->bvci = BVCI;
uint8_t cause = 39;
gprs_ns_nsip_listen(sgsn_nsi);
struct sockaddr_in dest;
dest.sin_family = AF_INET;
dest.sin_port = htons(SGSN_PORT);
inet_aton(SGSN_IP, &dest.sin_addr);
nsvc = gprs_ns_nsip_connect(sgsn_nsi, &dest, NSEI, nsvci);
unsigned i = 0;
while (1)
{
osmo_gsm_timers_check();
osmo_gsm_timers_prepare();
osmo_gsm_timers_update();
osmo_select_main(0);
if (i == 7)
{
bssgp_tx_bvc_reset(bctx, BVCI, cause);
}
i++;
}
talloc_free(gprs_rlcmac_bts);
}
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