diff options
Diffstat (limited to 'src/osmo-bts-sysmo/l1_if.c')
| -rw-r--r-- | src/osmo-bts-sysmo/l1_if.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/src/osmo-bts-sysmo/l1_if.c b/src/osmo-bts-sysmo/l1_if.c index 3c6db43d..09627af6 100644 --- a/src/osmo-bts-sysmo/l1_if.c +++ b/src/osmo-bts-sysmo/l1_if.c @@ -436,6 +436,7 @@ static int ph_tch_req(struct gsm_bts_trx *trx, struct msgb *msg, uint8_t chan_nr; GsmL1_Prim_t *l1p; struct msgb *nmsg = NULL; + int rc = -1; chan_nr = l1sap->u.tch.chan_nr; u32Fn = l1sap->u.tch.fn; @@ -459,17 +460,20 @@ static int ph_tch_req(struct gsm_bts_trx *trx, struct msgb *msg, if (!nmsg) return -ENOMEM; l1p = msgb_l1prim(nmsg); - if (!l1if_tch_encode(lchan, + rc = l1if_tch_encode(lchan, l1p->u.phDataReq.msgUnitParam.u8Buffer, &l1p->u.phDataReq.msgUnitParam.u8Size, msg->data, msg->len, u32Fn, - l1sap->u.tch.marker)) { + l1sap->u.tch.marker); + if (rc < 0) { + /* no data encoded for L1: smth will be generated below */ msgb_free(nmsg); nmsg = NULL; } } - /* no message/data, we generate an empty traffic msg */ + /* no message/data, we might generate an empty traffic msg or re-send + cached SID in case of DTX */ if (!nmsg) nmsg = gen_empty_tch_msg(lchan, u32Fn); @@ -497,7 +501,7 @@ static int ph_tch_req(struct gsm_bts_trx *trx, struct msgb *msg, /* send message to DSP's queue */ osmo_wqueue_enqueue(&fl1->write_q[MQ_L1_WRITE], nmsg); - if (l1sap->u.tch.marker) { /* Send voice after ONSET was sent */ + if (l1sap->u.tch.marker) { /* DTX: send voice after ONSET was sent */ l1sap->u.tch.marker = 0; return ph_tch_req(trx, l1sap->oph.msg, l1sap); } |