diff options
| -rw-r--r-- | openbsc/include/openbsc/chan_alloc.h | 2 | ||||
| -rw-r--r-- | openbsc/src/abis_rsl.c | 9 | ||||
| -rw-r--r-- | openbsc/src/chan_alloc.c | 16 | ||||
| -rw-r--r-- | openbsc/src/handover_logic.c | 2 |
4 files changed, 25 insertions, 4 deletions
diff --git a/openbsc/include/openbsc/chan_alloc.h b/openbsc/include/openbsc/chan_alloc.h index 3afcb3c47..63f875b0e 100644 --- a/openbsc/include/openbsc/chan_alloc.h +++ b/openbsc/include/openbsc/chan_alloc.h @@ -40,7 +40,7 @@ void ts_free(struct gsm_bts_trx_ts *ts); struct gsm_subscriber_connection *connection_for_subscr(struct gsm_subscriber *subscr); /* Allocate a logical channel (SDCCH, TCH, ...) */ -struct gsm_lchan *lchan_alloc(struct gsm_bts *bts, enum gsm_chan_t type); +struct gsm_lchan *lchan_alloc(struct gsm_bts *bts, enum gsm_chan_t type, int allow_bigger); /* Free a logical channel (SDCCH, TCH, ...) */ void lchan_free(struct gsm_lchan *lchan); diff --git a/openbsc/src/abis_rsl.c b/openbsc/src/abis_rsl.c index 706842225..d83af4a20 100644 --- a/openbsc/src/abis_rsl.c +++ b/openbsc/src/abis_rsl.c @@ -1167,6 +1167,7 @@ static int rsl_rx_chan_rqd(struct msgb *msg) enum gsm_chreq_reason_t chreq_reason; struct gsm_lchan *lchan; u_int8_t rqd_ta; + int is_lu; u_int16_t arfcn; u_int8_t ts_number, subch; @@ -1189,8 +1190,14 @@ static int rsl_rx_chan_rqd(struct msgb *msg) counter_inc(bts->network->stats.chreq.total); + /* + * We want LOCATION UPDATES to succeed and will assign a TCH + * if we have no SDCCH available. + */ + is_lu = !!(chreq_reason == GSM_CHREQ_REASON_LOCATION_UPD); + /* check availability / allocate channel */ - lchan = lchan_alloc(bts, lctype); + lchan = lchan_alloc(bts, lctype, is_lu); if (!lchan) { LOGP(DRSL, LOGL_NOTICE, "BTS %d CHAN RQD: no resources for %s 0x%x\n", msg->lchan->ts->trx->bts->nr, gsm_lchant_name(lctype), rqd_ref->ra); diff --git a/openbsc/src/chan_alloc.c b/openbsc/src/chan_alloc.c index 5325dc08a..a0eda546e 100644 --- a/openbsc/src/chan_alloc.c +++ b/openbsc/src/chan_alloc.c @@ -225,7 +225,8 @@ _lc_find_bts(struct gsm_bts *bts, enum gsm_phys_chan_config pchan) } /* Allocate a logical channel */ -struct gsm_lchan *lchan_alloc(struct gsm_bts *bts, enum gsm_chan_t type) +struct gsm_lchan *lchan_alloc(struct gsm_bts *bts, enum gsm_chan_t type, + int allow_bigger) { struct gsm_lchan *lchan = NULL; enum gsm_phys_chan_config first, second; @@ -243,6 +244,19 @@ struct gsm_lchan *lchan_alloc(struct gsm_bts *bts, enum gsm_chan_t type) lchan = _lc_find_bts(bts, first); if (lchan == NULL) lchan = _lc_find_bts(bts, second); + + /* allow to assign bigger channels */ + if (allow_bigger) { + if (lchan == NULL) { + lchan = _lc_find_bts(bts, GSM_PCHAN_TCH_H); + type = GSM_LCHAN_TCH_H; + } + + if (lchan == NULL) { + lchan = _lc_find_bts(bts, GSM_PCHAN_TCH_F); + type = GSM_LCHAN_TCH_F; + } + } break; case GSM_LCHAN_TCH_F: lchan = _lc_find_bts(bts, GSM_PCHAN_TCH_F); diff --git a/openbsc/src/handover_logic.c b/openbsc/src/handover_logic.c index 92580bfb7..30cea7b0f 100644 --- a/openbsc/src/handover_logic.c +++ b/openbsc/src/handover_logic.c @@ -104,7 +104,7 @@ int bsc_handover_start(struct gsm_lchan *old_lchan, struct gsm_bts *bts) return -ENOSPC; } - new_lchan = lchan_alloc(bts, old_lchan->type); + new_lchan = lchan_alloc(bts, old_lchan->type, 0); if (!new_lchan) { LOGP(DHO, LOGL_NOTICE, "No free channel\n"); counter_inc(bts->network->stats.handover.no_channel); |