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#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 <osmocom/core/backtrace.h>
#include <osmocom/abis/abis.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 <osmo-bts/handover.h>
uint8_t phys_info[] = { 0x03, 0x03, 0x0d, 0x06, 0x2d, 0x00, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b, 0x2b };
static struct gsm_bts *bts;
struct gsm_bts_trx *trx;
int quit = 0;
uint8_t abis_mac[6] = { 0, 1, 2, 3, 4, 5 };
int modify_count = 0;
static void expect_phys_info(struct lapdm_entity *le)
{
struct osmo_phsap_prim pp;
int rc;
rc = lapdm_phsap_dequeue_prim(le, &pp);
OSMO_ASSERT(rc == 0);
OSMO_ASSERT(sizeof(phys_info) == pp.oph.msg->len);
OSMO_ASSERT(!memcmp(phys_info, pp.oph.msg->data, pp.oph.msg->len));
msgb_free(pp.oph.msg);
}
int main(int argc, char **argv)
{
void *tall_bts_ctx;
struct e1inp_line *line;
struct e1inp_ts *sign_ts;
struct gsm_lchan *lchan;
struct osmo_phsap_prim nl1sap;
struct msgb *msg;
struct abis_rsl_dchan_hdr *rslh;
int i;
tall_bts_ctx = talloc_named_const(NULL, 1, "OsmoBTS context");
msgb_talloc_ctx_init(tall_bts_ctx, 0);
osmo_init_logging2(tall_bts_ctx, &bts_log_info);
osmo_stderr_target->categories[DHO].loglevel = LOGL_DEBUG;
bts = gsm_bts_alloc(tall_bts_ctx, 0);
if (!bts) {
fprintf(stderr, "Failed to create BTS structure\n");
exit(1);
}
if (bts_init(bts) < 0) {
fprintf(stderr, "unable to init BTS\n");
exit(1);
}
trx = gsm_bts_trx_alloc(bts);
if (!trx) {
fprintf(stderr, "Failed to alloc TRX structure\n");
exit(1);
}
libosmo_abis_init(NULL);
line = e1inp_line_create(0, "ipa");
OSMO_ASSERT(line);
sign_ts = e1inp_line_ipa_rsl_ts(line, 0);
e1inp_ts_config_sign(sign_ts, line);
trx->rsl_link = e1inp_sign_link_create(sign_ts, E1INP_SIGN_RSL, NULL, 0, 0);
OSMO_ASSERT(trx->rsl_link);
trx->rsl_link->trx = trx;
fprintf(stderr, "test 1: without timeout\n");
/* create two lchans for handover */
lchan = &trx->ts[1].lchan[0];
lchan->type = GSM_LCHAN_SDCCH;
l1sap_chan_act(lchan->ts->trx, 0x09);
lchan = &trx->ts[2].lchan[0];
lchan->type = GSM_LCHAN_TCH_F;
lchan->ho.active = HANDOVER_ENABLED;
lchan->ho.ref = 23;
l1sap_chan_act(lchan->ts->trx, 0x0a);
OSMO_ASSERT(msgb_dequeue(&trx->rsl_link->tx_list));
OSMO_ASSERT(msgb_dequeue(&trx->rsl_link->tx_list));
OSMO_ASSERT(!msgb_dequeue(&trx->rsl_link->tx_list));
/* send access burst with wrong ref */
memset(&nl1sap, 0, sizeof(nl1sap));
osmo_prim_init(&nl1sap.oph, SAP_GSM_PH, PRIM_PH_RACH, PRIM_OP_INDICATION, NULL);
/* Report the minimum acceptable value to pass L1SAP checks */
nl1sap.u.rach_ind.lqual_cb = bts->min_qual_rach;
nl1sap.u.rach_ind.chan_nr = 0x0a;
nl1sap.u.rach_ind.ra = 42;
l1sap_up(trx, &nl1sap);
/* expect no action */
OSMO_ASSERT(modify_count == 0);
OSMO_ASSERT(!msgb_dequeue(&trx->rsl_link->tx_list));
/* send access burst with correct ref */
nl1sap.u.rach_ind.ra = 23;
l1sap_up(trx, &nl1sap);
OSMO_ASSERT(modify_count == 1);
/* expect PHYS INFO */
expect_phys_info(&trx->ts[2].lchan[0].lapdm_ch.lapdm_dcch);
/* expect exactly one HO.DET */
OSMO_ASSERT(msg = msgb_dequeue(&trx->rsl_link->tx_list));
rslh = msgb_l2(msg);
OSMO_ASSERT(rslh->c.msg_type == RSL_MT_HANDO_DET);
OSMO_ASSERT(!msgb_dequeue(&trx->rsl_link->tx_list));
/* expect T3105 running */
OSMO_ASSERT(osmo_timer_pending(&trx->ts[2].lchan[0].ho.t3105))
/* indicate frame */
handover_frame(&trx->ts[2].lchan[0]);
/* expect T3105 not running */
OSMO_ASSERT(!osmo_timer_pending(&trx->ts[2].lchan[0].ho.t3105))
fprintf(stderr, "test 2: with timeout\n");
/* enable handover again */
lchan = &trx->ts[2].lchan[0];
lchan->ho.active = HANDOVER_ENABLED;
lchan->ho.ref = 23;
modify_count = 0;
/* send access burst with correct ref */
nl1sap.u.rach_ind.ra = 23;
l1sap_up(trx, &nl1sap);
OSMO_ASSERT(modify_count == 1);
/* expect PHYS INFO */
expect_phys_info(&trx->ts[2].lchan[0].lapdm_ch.lapdm_dcch);
/* expect exactly one HO.DET */
OSMO_ASSERT(msg = msgb_dequeue(&trx->rsl_link->tx_list));
rslh = msgb_l2(msg);
OSMO_ASSERT(rslh->c.msg_type == RSL_MT_HANDO_DET);
OSMO_ASSERT(!msgb_dequeue(&trx->rsl_link->tx_list));
for (i = 0; i < bts->ny1 - 1; i++) {
/* expect T3105 running */
OSMO_ASSERT(osmo_timer_pending(&trx->ts[2].lchan[0].ho.t3105))
/* timeout T3105 */
gettimeofday(&trx->ts[2].lchan[0].ho.t3105.timeout, NULL);
osmo_select_main(0);
/* expect PHYS INFO */
expect_phys_info(&trx->ts[2].lchan[0].lapdm_ch.lapdm_dcch);
}
/* timeout T3105 */
gettimeofday(&trx->ts[2].lchan[0].ho.t3105.timeout, NULL);
osmo_select_main(0);
/* expect T3105 not running */
OSMO_ASSERT(!osmo_timer_pending(&trx->ts[2].lchan[0].ho.t3105))
/* expect exactly one CONN.FAIL */
OSMO_ASSERT(msg = msgb_dequeue(&trx->rsl_link->tx_list));
rslh = msgb_l2(msg);
OSMO_ASSERT(rslh->c.msg_type == RSL_MT_CONN_FAIL);
OSMO_ASSERT(!msgb_dequeue(&trx->rsl_link->tx_list));
#if 0
while (!quit) {
log_reset_context();
osmo_select_main(0);
}
#endif
printf("Success\n");
return 0;
}
void bts_model_abis_close(struct gsm_bts *bts)
{
}
int bts_model_oml_estab(struct gsm_bts *bts)
{
return 0;
}
int bts_model_l1sap_down(struct gsm_bts_trx *trx, struct osmo_phsap_prim *l1sap)
{
int rc = 0;
uint8_t chan_nr;
uint8_t tn, ss;
struct gsm_lchan *lchan;
struct msgb *msg = l1sap->oph.msg;
struct osmo_phsap_prim nl1sap;
switch (OSMO_PRIM_HDR(&l1sap->oph)) {
case OSMO_PRIM(PRIM_MPH_INFO, PRIM_OP_REQUEST):
switch (l1sap->u.info.type) {
case PRIM_INFO_ACTIVATE:
chan_nr = l1sap->u.info.u.act_req.chan_nr;
tn = L1SAP_CHAN2TS(chan_nr);
ss = l1sap_chan2ss(chan_nr);
lchan = &trx->ts[tn].lchan[ss];
lchan_init_lapdm(lchan);
lchan_set_state(lchan, LCHAN_S_ACTIVE);
memset(&nl1sap, 0, sizeof(nl1sap));
osmo_prim_init(&nl1sap.oph, SAP_GSM_PH, PRIM_MPH_INFO, PRIM_OP_CONFIRM, NULL);
nl1sap.u.info.type = PRIM_INFO_ACTIVATE;
nl1sap.u.info.u.act_cnf.chan_nr = chan_nr;
return l1sap_up(trx, &nl1sap);
case PRIM_INFO_MODIFY:
modify_count++;
break;
default:
LOGP(DL1C, LOGL_NOTICE, "unknown MPH-INFO.req %d\n",
l1sap->u.info.type);
rc = -EINVAL;
goto done;
}
break;
default:
LOGP(DL1C, LOGL_NOTICE, "unknown prim %d op %d\n",
l1sap->oph.primitive, l1sap->oph.operation);
rc = -EINVAL;
goto done;
}
done:
if (msg)
msgb_free(msg);
return rc;
}
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