diff options
Diffstat (limited to 'openbsc/src/libcommon/gsm_data.c')
| -rw-r--r-- | openbsc/src/libcommon/gsm_data.c | 40 |
1 files changed, 38 insertions, 2 deletions
diff --git a/openbsc/src/libcommon/gsm_data.c b/openbsc/src/libcommon/gsm_data.c index 8830ce144..db7de082d 100644 --- a/openbsc/src/libcommon/gsm_data.c +++ b/openbsc/src/libcommon/gsm_data.c @@ -323,8 +323,7 @@ struct gsm_bts *gsm_bts_alloc_register(struct gsm_network *net, enum gsm_bts_typ bts->si_common.chan_desc.bs_pa_mfrms = RSL_BS_PA_MFRMS_5; /* paging frames */ bts->si_common.chan_desc.bs_ag_blks_res = 1; /* reserved AGCH blocks */ bts->si_common.chan_desc.t3212 = 5; /* Use 30 min periodic update interval as sane default */ - set_radio_link_timeout(&bts->si_common.cell_options, 32); - /* Use RADIO LINK TIMEOUT of 32 seconds */ + gsm_bts_set_radio_link_timeout(bts, 32); /* Use RADIO LINK TIMEOUT of 32 */ llist_add_tail(&bts->list, &net->bts_list); @@ -435,3 +434,40 @@ int bts_depend_check(struct gsm_bts *bts) } return 1; } + +/* get the radio link timeout (based on SACCH decode errors, according + * to algorithm specified in TS 05.08 section 5.2. A value of -1 + * indicates we should use an infinitely long timeout, which only works + * with OsmoBTS as the BTS implementation */ +int gsm_bts_get_radio_link_timeout(const struct gsm_bts *bts) +{ + const struct gsm48_cell_options *cell_options = &bts->si_common.cell_options; + + if (bts->infinite_radio_link_timeout) + return -1; + else { + /* Encoding as per Table 10.5.21 of TS 04.08 */ + return (cell_options->radio_link_timeout + 1) << 2; + } +} + +/* set the radio link timeout (based on SACCH decode errors, according + * to algorithm specified in TS 05.08 Section 5.2. A value of -1 + * indicates we should use an infinitely long timeout, which only works + * with OsmoBTS as the BTS implementation */ +void gsm_bts_set_radio_link_timeout(struct gsm_bts *bts, int value) +{ + struct gsm48_cell_options *cell_options = &bts->si_common.cell_options; + + if (value < 0) + bts->infinite_radio_link_timeout = true; + else { + bts->infinite_radio_link_timeout = false; + /* Encoding as per Table 10.5.21 of TS 04.08 */ + if (value < 4) + value = 4; + if (value > 64) + value = 64; + cell_options->radio_link_timeout = (value >> 2) - 1; + } +} |