/* receive BCCH at RR layer */
static int bcch(struct osmocom_ms *ms, struct msgb *msg)
{
struct gsm48_sysinfo *s = &sysinfo;
struct gsm48_system_information_type_header *sih = msgb_l3(msg);
uint8_t ccch_mode;
if (msgb_l3len(msg) != 23) {
LOGP(DRR, LOGL_NOTICE, "Invalid BCCH message length\n");
return -EINVAL;
}
switch (sih->system_information) {
case GSM48_MT_RR_SYSINFO_1:
if (!memcmp(sih, s->si1_msg, sizeof(s->si1_msg)))
return 0;
LOGP(DRR, LOGL_INFO, "New SYSTEM INFORMATION 1\n");
gsm48_decode_sysinfo1(s,
(struct gsm48_system_information_type_1 *) sih,
msgb_l3len(msg));
return new_sysinfo();
case GSM48_MT_RR_SYSINFO_2:
if (!memcmp(sih, s->si2_msg, sizeof(s->si2_msg)))
return 0;
LOGP(DRR, LOGL_INFO, "New SYSTEM INFORMATION 2\n");
gsm48_decode_sysinfo2(s,
(struct gsm48_system_information_type_2 *) sih,
msgb_l3len(msg));
return new_sysinfo();
case GSM48_MT_RR_SYSINFO_2bis:
if (!memcmp(sih, s->si2b_msg, sizeof(s->si2b_msg)))
return 0;
LOGP(DRR, LOGL_INFO, "New SYSTEM INFORMATION 2bis\n");
gsm48_decode_sysinfo2bis(s,
(struct gsm48_system_information_type_2bis *) sih,
msgb_l3len(msg));
return new_sysinfo();
case GSM48_MT_RR_SYSINFO_2ter:
if (!memcmp(sih, s->si2t_msg, sizeof(s->si2t_msg)))
return 0;
LOGP(DRR, LOGL_INFO, "New SYSTEM INFORMATION 2ter\n");
gsm48_decode_sysinfo2ter(s,
(struct gsm48_system_information_type_2ter *) sih,
msgb_l3len(msg));
return new_sysinfo();
case GSM48_MT_RR_SYSINFO_3:
if (!memcmp(sih, s->si3_msg, sizeof(s->si3_msg)))
return 0;
LOGP(DRR, LOGL_INFO, "New SYSTEM INFORMATION 3\n");
gsm48_decode_sysinfo3(s,
(struct gsm48_system_information_type_3 *) sih,
msgb_l3len(msg));
ccch_mode = (s->ccch_conf == 1) ? CCCH_MODE_COMBINED :
CCCH_MODE_NON_COMBINED;
LOGP(DRR, LOGL_INFO, "Changing CCCH_MODE to %d\n", ccch_mode);
l1ctl_tx_ccch_mode_req(ms, ccch_mode);
return new_sysinfo();
case GSM48_MT_RR_SYSINFO_4:
if (!memcmp(sih, s->si4_msg, sizeof(s->si4_msg)))
return 0;
LOGP(DRR, LOGL_INFO, "New SYSTEM INFORMATION 4\n");
gsm48_decode_sysinfo4(s,
(struct gsm48_system_information_type_4 *) sih,
msgb_l3len(msg));
return new_sysinfo();
default:
return -EINVAL;
}
}
static void dump_bcch(struct osmocom_ms *ms, uint8_t tc, const uint8_t *data)
{
struct gsm48_system_information_type_header *si_hdr;
si_hdr = (struct gsm48_system_information_type_header *) data;
/* GSM 05.02 §6.3.1.3 Mapping of BCCH data */
switch (si_hdr->system_information) {
case GSM48_MT_RR_SYSINFO_1:
#ifdef BCCH_TC_CHECK
if (tc != 0)
LOGP(DRR, LOGL_ERROR, "SI1 on the wrong TC: %d\n", tc);
#endif
if (!app_state.has_si1) {
struct gsm48_system_information_type_1 *si1 =
(struct gsm48_system_information_type_1 *)data;
gsm48_decode_freq_list(app_state.cell_arfcns,
si1->cell_channel_description,
sizeof(si1->cell_channel_description),
0xff, 0x01);
app_state.has_si1 = 1;
LOGP(DRR, LOGL_ERROR, "SI1 received.\n");
}
break;
case GSM48_MT_RR_SYSINFO_2:
#ifdef BCCH_TC_CHECK
if (tc != 1)
LOGP(DRR, LOGL_ERROR, "SI2 on the wrong TC: %d\n", tc);
#endif
break;
case GSM48_MT_RR_SYSINFO_3:
#ifdef BCCH_TC_CHECK
if (tc != 2 && tc != 6)
LOGP(DRR, LOGL_ERROR, "SI3 on the wrong TC: %d\n", tc);
#endif
if (app_state.ccch_mode == CCCH_MODE_NONE) {
struct gsm48_system_information_type_3 *si3 =
(struct gsm48_system_information_type_3 *)data;
if (si3->control_channel_desc.ccch_conf == RSL_BCCH_CCCH_CONF_1_C)
app_state.ccch_mode = CCCH_MODE_COMBINED;
else
app_state.ccch_mode = CCCH_MODE_NON_COMBINED;
l1ctl_tx_ccch_mode_req(ms, app_state.ccch_mode);
}
break;
case GSM48_MT_RR_SYSINFO_4:
#ifdef BCCH_TC_CHECK
if (tc != 3 && tc != 7)
LOGP(DRR, LOGL_ERROR, "SI4 on the wrong TC: %d\n", tc);
#endif
break;
case GSM48_MT_RR_SYSINFO_5:
break;
case GSM48_MT_RR_SYSINFO_6:
break;
case GSM48_MT_RR_SYSINFO_7:
#ifdef BCCH_TC_CHECK
if (tc != 7)
LOGP(DRR, LOGL_ERROR, "SI7 on the wrong TC: %d\n", tc);
#endif
break;
case GSM48_MT_RR_SYSINFO_8:
#ifdef BCCH_TC_CHECK
if (tc != 3)
LOGP(DRR, LOGL_ERROR, "SI8 on the wrong TC: %d\n", tc);
#endif
break;
case GSM48_MT_RR_SYSINFO_9:
#ifdef BCCH_TC_CHECK
if (tc != 4)
LOGP(DRR, LOGL_ERROR, "SI9 on the wrong TC: %d\n", tc);
#endif
break;
case GSM48_MT_RR_SYSINFO_13:
#ifdef BCCH_TC_CHECK
if (tc != 4 && tc != 0)
LOGP(DRR, LOGL_ERROR, "SI13 on the wrong TC: %d\n", tc);
#endif
break;
case GSM48_MT_RR_SYSINFO_16:
#ifdef BCCH_TC_CHECK
if (tc != 6)
LOGP(DRR, LOGL_ERROR, "SI16 on the wrong TC: %d\n", tc);
#endif
break;
case GSM48_MT_RR_SYSINFO_17:
#ifdef BCCH_TC_CHECK
if (tc != 2)
LOGP(DRR, LOGL_ERROR, "SI17 on the wrong TC: %d\n", tc);
#endif
break;
case GSM48_MT_RR_SYSINFO_2bis:
#ifdef BCCH_TC_CHECK
if (tc != 5)
LOGP(DRR, LOGL_ERROR, "SI2bis on the wrong TC: %d\n", tc);
#endif
break;
case GSM48_MT_RR_SYSINFO_2ter:
#ifdef BCCH_TC_CHECK
if (tc != 5 && tc != 4)
LOGP(DRR, LOGL_ERROR, "SI2ter on the wrong TC: %d\n", tc);
#endif
break;
case GSM48_MT_RR_SYSINFO_5bis:
break;
case GSM48_MT_RR_SYSINFO_5ter:
break;
default:
LOGP(DRR, LOGL_ERROR, "Unknown SI: %d\n",
si_hdr->system_information);
break;
};
}
static void dump_bcch(struct osmocom_ms *ms, uint8_t tc, const uint8_t *data)
{
struct gsm48_system_information_type_header *si_hdr;
si_hdr = (struct gsm48_system_information_type_header *) data;
/* GSM 05.02 §6.3.1.3 Mapping of BCCH data */
switch (si_hdr->system_information) {
case GSM48_MT_RR_SYSINFO_1:
fprintf(stderr, "\tSI1");
#ifdef BCCH_TC_CHECK
if (tc != 0)
fprintf(stderr, " on wrong TC");
#endif
if (!app_state.has_si1) {
struct gsm48_system_information_type_1 *si1 =
(struct gsm48_system_information_type_1 *)data;
gsm48_decode_freq_list(&app_state.cell_arfcns,
si1->cell_channel_description,
sizeof(si1->cell_channel_description),
0xff, 0x01);
app_state.has_si1 = 1;
}
break;
case GSM48_MT_RR_SYSINFO_2:
fprintf(stderr, "\tSI2");
#ifdef BCCH_TC_CHECK
if (tc != 1)
fprintf(stderr, " on wrong TC");
#endif
break;
case GSM48_MT_RR_SYSINFO_3:
fprintf(stderr, "\tSI3");
#ifdef BCCH_TC_CHECK
if (tc != 2 && tc != 6)
fprintf(stderr, " on wrong TC");
#endif
if (app_state.ccch_mode == CCCH_MODE_NONE) {
struct gsm48_system_information_type_3 *si3 =
(struct gsm48_system_information_type_3 *)data;
if (si3->control_channel_desc.ccch_conf == RSL_BCCH_CCCH_CONF_1_C)
app_state.ccch_mode = CCCH_MODE_COMBINED;
else
app_state.ccch_mode = CCCH_MODE_NON_COMBINED;
l1ctl_tx_ccch_mode_req(ms, app_state.ccch_mode);
}
break;
case GSM48_MT_RR_SYSINFO_4:
fprintf(stderr, "\tSI4");
#ifdef BCCH_TC_CHECK
if (tc != 3 && tc != 7)
fprintf(stderr, " on wrong TC");
#endif
break;
case GSM48_MT_RR_SYSINFO_5:
fprintf(stderr, "\tSI5");
break;
case GSM48_MT_RR_SYSINFO_6:
fprintf(stderr, "\tSI6");
break;
case GSM48_MT_RR_SYSINFO_7:
fprintf(stderr, "\tSI7");
#ifdef BCCH_TC_CHECK
if (tc != 7)
fprintf(stderr, " on wrong TC");
#endif
break;
case GSM48_MT_RR_SYSINFO_8:
fprintf(stderr, "\tSI8");
#ifdef BCCH_TC_CHECK
if (tc != 3)
fprintf(stderr, " on wrong TC");
#endif
break;
case GSM48_MT_RR_SYSINFO_9:
fprintf(stderr, "\tSI9");
#ifdef BCCH_TC_CHECK
if (tc != 4)
fprintf(stderr, " on wrong TC");
#endif
break;
case GSM48_MT_RR_SYSINFO_13:
fprintf(stderr, "\tSI13");
#ifdef BCCH_TC_CHECK
if (tc != 4 && tc != 0)
fprintf(stderr, " on wrong TC");
#endif
break;
case GSM48_MT_RR_SYSINFO_16:
fprintf(stderr, "\tSI16");
#ifdef BCCH_TC_CHECK
if (tc != 6)
fprintf(stderr, " on wrong TC");
#endif
break;
case GSM48_MT_RR_SYSINFO_17:
fprintf(stderr, "\tSI17");
#ifdef BCCH_TC_CHECK
if (tc != 2)
fprintf(stderr, " on wrong TC");
#endif
break;
case GSM48_MT_RR_SYSINFO_2bis:
fprintf(stderr, "\tSI2bis");
#ifdef BCCH_TC_CHECK
if (tc != 5)
fprintf(stderr, " on wrong TC");
#endif
break;
case GSM48_MT_RR_SYSINFO_2ter:
fprintf(stderr, "\tSI2ter");
#ifdef BCCH_TC_CHECK
if (tc != 5 && tc != 4)
fprintf(stderr, " on wrong TC");
#endif
break;
case GSM48_MT_RR_SYSINFO_5bis:
fprintf(stderr, "\tSI5bis");
break;
case GSM48_MT_RR_SYSINFO_5ter:
fprintf(stderr, "\tSI5ter");
break;
default:
fprintf(stderr, "\tUnknown SI");
break;
};
fprintf(stderr, "\n");
}
