Review at https://gerrit.osmocom.org/187 dyn PDCH: Automatically deactivate/activate PDCH on TCH/F+PDCH channel Handle shared TCH/F+PDCH channels as regular TCH/F channels. Prior to activation, deactivate PDCH mode. After deactivation, restore PDCH mode. Change-Id: Ided47641eebfdb815592b307bf38b5fb36663be5 --- M openbsc/include/openbsc/gsm_data_shared.h M openbsc/src/libbsc/abis_rsl.c M openbsc/src/libbsc/bsc_init.c 3 files changed, 43 insertions(+), 3 deletions(-) git pull ssh://gerrit.osmocom.org:29418/openbsc refs/changes/87/187/1 diff --git a/openbsc/include/openbsc/gsm_data_shared.h b/openbsc/include/openbsc/gsm_data_shared.h index c3d5978..72e8cc4 100644 --- a/openbsc/include/openbsc/gsm_data_shared.h +++ b/openbsc/include/openbsc/gsm_data_shared.h @@ -256,6 +256,10 @@ struct gsm48_req_ref *rqd_ref; struct gsm_subscriber_connection *conn; + + /* channel activation type and handover ref */ + uint8_t act_type; + uint8_t ho_ref; #else /* Number of different GsmL1_Sapi_t used in osmo_bts_sysmo is 23. * Currently we don't share these headers so this is a magic number. */ diff --git a/openbsc/src/libbsc/abis_rsl.c b/openbsc/src/libbsc/abis_rsl.c index c3a0c5c..b56f7a7 100644 --- a/openbsc/src/libbsc/abis_rsl.c +++ b/openbsc/src/libbsc/abis_rsl.c @@ -470,6 +470,15 @@ if (rc < 0) return rc; + /* if channel is in PDCH mode, deactivate PDCH first */ + if (lchan->ts->pchan == GSM_PCHAN_TCH_F_PDCH + && (lchan->ts->flags & TS_F_PDCH_MODE)) { + /* store activation type and handover reference */ + lchan->act_type = act_type; + lchan->ho_ref = ho_ref; + return rsl_ipacc_pdch_activate(lchan->ts, 0); + } + ta = lchan->rqd_ta; /* BS11 requires TA shifted by 2 bits */ @@ -746,6 +755,11 @@ LOGP(DRSL, LOGL_NOTICE, "%s CHAN REL ACK but state %s\n", gsm_lchan_name(lchan), gsm_lchans_name(lchan->state)); + + /* Put PDCH channel back into PDCH mode first */ + if (lchan->ts->pchan == GSM_PCHAN_TCH_F_PDCH) + return rsl_ipacc_pdch_activate(lchan->ts, 1); + do_lchan_free(lchan); return 0; @@ -1187,6 +1201,26 @@ return 0; } +static int rsl_rx_pdch_act_ack(struct msgb *msg) +{ + msg->lchan->ts->flags |= TS_F_PDCH_MODE; + + /* We have activated PDCH, so now the channel is available again. */ + do_lchan_free(msg->lchan); + + return 0; +} + +static int rsl_rx_pdch_deact_ack(struct msgb *msg) +{ + msg->lchan->ts->flags &= ~TS_F_PDCH_MODE; + + rsl_chan_activate_lchan(msg->lchan, msg->lchan->act_type, + msg->lchan->ho_ref); + + return 0; +} + static int abis_rsl_rx_dchan(struct msgb *msg) { struct abis_rsl_dchan_hdr *rslh = msgb_l2(msg); @@ -1225,14 +1259,14 @@ break; case RSL_MT_IPAC_PDCH_ACT_ACK: DEBUGPC(DRSL, "%s IPAC PDCH ACT ACK\n", ts_name); - msg->lchan->ts->flags |= TS_F_PDCH_MODE; + rc = rsl_rx_pdch_act_ack(msg); break; case RSL_MT_IPAC_PDCH_ACT_NACK: LOGP(DRSL, LOGL_ERROR, "%s IPAC PDCH ACT NACK\n", ts_name); break; case RSL_MT_IPAC_PDCH_DEACT_ACK: DEBUGP(DRSL, "%s IPAC PDCH DEACT ACK\n", ts_name); - msg->lchan->ts->flags &= ~TS_F_PDCH_MODE; + rc = rsl_rx_pdch_deact_ack(msg); break; case RSL_MT_IPAC_PDCH_DEACT_NACK: LOGP(DRSL, LOGL_ERROR, "%s IPAC PDCH DEACT NACK\n", ts_name); diff --git a/openbsc/src/libbsc/bsc_init.c b/openbsc/src/libbsc/bsc_init.c index 5c27862..04452f7 100644 --- a/openbsc/src/libbsc/bsc_init.c +++ b/openbsc/src/libbsc/bsc_init.c @@ -329,8 +329,10 @@ llist_for_each_entry(cur_trx, &trx->bts->trx_list, list) { int i; - for (i = 0; i < ARRAY_SIZE(cur_trx->ts); i++) + for (i = 0; i < ARRAY_SIZE(cur_trx->ts); i++) { generate_ma_for_ts(&cur_trx->ts[i]); + cur_trx->ts[i].flags |= TS_F_PDCH_MODE; + } } } if (isd->link_type == E1INP_SIGN_RSL) -- To view, visit https://gerrit.osmocom.org/187 To unsubscribe, visit https://gerrit.osmocom.org/settings Gerrit-MessageType: newchange Gerrit-Change-Id: Ided47641eebfdb815592b307bf38b5fb36663be5 Gerrit-PatchSet: 1 Gerrit-Project: openbsc Gerrit-Branch: master Gerrit-Owner: Holger Freyther <holger@freyther.de>