diff options
Diffstat (limited to 'openbsc/src/libcommon/gsm_data_shared.c')
| -rw-r--r-- | openbsc/src/libcommon/gsm_data_shared.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/openbsc/src/libcommon/gsm_data_shared.c b/openbsc/src/libcommon/gsm_data_shared.c index 2488c3afd..c8c9e0423 100644 --- a/openbsc/src/libcommon/gsm_data_shared.c +++ b/openbsc/src/libcommon/gsm_data_shared.c @@ -708,3 +708,28 @@ struct gsm_lchan *rsl_lchan_lookup(struct gsm_bts_trx *trx, uint8_t chan_nr, return &ts->lchan[lch_idx]; } + +static const uint8_t subslots_per_pchan[] = { + [GSM_PCHAN_NONE] = 0, + [GSM_PCHAN_CCCH] = 0, + [GSM_PCHAN_CCCH_SDCCH4] = 4, + [GSM_PCHAN_TCH_F] = 1, + [GSM_PCHAN_TCH_H] = 2, + [GSM_PCHAN_SDCCH8_SACCH8C] = 8, + [GSM_PCHAN_TCH_F_PDCH] = 1, + [GSM_PCHAN_CCCH_SDCCH4_CBCH] = 4, + [GSM_PCHAN_SDCCH8_SACCH8C_CBCH] = 8, + /* + * GSM_PCHAN_TCH_F_TCH_H_PDCH should not be part of this, those TS are + * handled according to their ts->dyn state. + */ +}; + +/*! According to ts->pchan and possibly ts->dyn_pchan, return the number of + * logical channels available in the timeslot. */ +uint8_t ts_subslots(struct gsm_bts_trx_ts *ts) +{ + if (ts->pchan == GSM_PCHAN_TCH_F_TCH_H_PDCH) + return subslots_per_pchan[ts->dyn.pchan_is]; + return subslots_per_pchan[ts->pchan]; +} |