From: Max msuraev@sysmocom.de

This provides helpful information for debugging internal MNCC handler. --- openbsc/src/libbsc/bsc_api.c | 6 ++++-- openbsc/src/libmsc/gsm_04_08.c | 23 ++++++++++++++++++----- openbsc/src/libmsc/mncc_builtin.c | 3 ++- openbsc/src/osmo-nitb/bsc_hack.c | 4 +++- 4 files changed, 27 insertions(+), 9 deletions(-)

diff --git a/openbsc/src/libbsc/bsc_api.c b/openbsc/src/libbsc/bsc_api.c index e6d820d..b8b5967 100644 --- a/openbsc/src/libbsc/bsc_api.c +++ b/openbsc/src/libbsc/bsc_api.c @@ -393,11 +393,13 @@ int gsm0808_assign_req(struct gsm_subscriber_connection *conn, int chan_mode, in if (handle_new_assignment(conn, chan_mode, full_rate) != 0) goto error; } else { - LOGP(DMSC, LOGL_NOTICE, - "Sending ChanModify for speech %d %d\n", chan_mode, full_rate); if (chan_mode == GSM48_CMODE_SPEECH_AMR) handle_mr_config(conn, conn->lchan, full_rate);

+ LOGP(DMSC, LOGL_NOTICE, + "Sending ChanModify for speech: %s on channel %s\n", + get_value_string(gsm48_chan_mode_names, chan_mode), + get_value_string(gsm_chan_t_names, conn->lchan->type)); gsm48_lchan_modify(conn->lchan, chan_mode); }

diff --git a/openbsc/src/libmsc/gsm_04_08.c b/openbsc/src/libmsc/gsm_04_08.c index 1524ec4..7b78d48 100644 --- a/openbsc/src/libmsc/gsm_04_08.c +++ b/openbsc/src/libmsc/gsm_04_08.c @@ -59,6 +59,7 @@ #include <osmocom/gsm/gsm48.h> #include <osmocom/gsm/gsm0480.h> #include <osmocom/gsm/gsm_utils.h> +#include <osmocom/gsm/protocol/gsm_04_08.h> #include <osmocom/core/msgb.h> #include <osmocom/core/talloc.h> #include <osmocom/gsm/tlv.h> @@ -1598,11 +1599,15 @@ static int tch_map(struct gsm_lchan *lchan, struct gsm_lchan *remote_lchan) { struct gsm_bts *bts = lchan->ts->trx->bts; struct gsm_bts *remote_bts = remote_lchan->ts->trx->bts; + enum gsm_chan_t lt = lchan->type, rt = remote_lchan->type; int rc;

- DEBUGP(DCC, "Setting up TCH map between (bts=%u,trx=%u,ts=%u) and (bts=%u,trx=%u,ts=%u)\n", - bts->nr, lchan->ts->trx->nr, lchan->ts->nr, - remote_bts->nr, remote_lchan->ts->trx->nr, remote_lchan->ts->nr); + DEBUGP(DCC, "Setting up TCH map between (bts=%u,trx=%u,ts=%u,%s) and " + "(bts=%u,trx=%u,ts=%u,%s)\n", + bts->nr, lchan->ts->trx->nr, lchan->ts->nr, + get_value_string(gsm_chan_t_names, lt), + remote_bts->nr, remote_lchan->ts->trx->nr, remote_lchan->ts->nr, + get_value_string(gsm_chan_t_names, rt));

if (bts->type != remote_bts->type) { LOGP(DCC, LOGL_ERROR, "Cannot switch calls between different BTS types yet\n"); @@ -2999,6 +3004,7 @@ static int tch_rtp_create(struct gsm_network *net, uint32_t callref) struct gsm_bts *bts; struct gsm_lchan *lchan; struct gsm_trans *trans; + enum gsm48_chan_mode m;

/* Find callref */ trans = trans_find_by_callref(net, callref); @@ -3038,8 +3044,11 @@ static int tch_rtp_create(struct gsm_network *net, uint32_t callref) */ if (lchan->tch_mode == GSM48_CMODE_SIGN) { trans->conn->mncc_rtp_create_pending = 1; - return gsm0808_assign_req(trans->conn, - mncc_codec_for_mode(lchan->type), + m = mncc_codec_for_mode(lchan->type); + LOGP(DMNCC, LOGL_DEBUG, "RTP create: codec=%s, chan_type=%s\n", + get_value_string(gsm48_chan_mode_names, m), + get_value_string(gsm_chan_t_names, lchan->type)); + return gsm0808_assign_req(trans->conn, m, lchan->type != GSM_LCHAN_TCH_H); }

@@ -3068,6 +3077,10 @@ static int tch_rtp_connect(struct gsm_network *net, void *arg) }

lchan = trans->conn->lchan; + LOGP(DMNCC, LOGL_DEBUG, "RTP connect: codec=%s, chan_type=%s\n", + get_value_string(gsm48_chan_mode_names, + mncc_codec_for_mode(lchan->type)), + get_value_string(gsm_chan_t_names, lchan->type));

/* TODO: Check if payload_msg_type is compatible with what we have */ if (rtp->payload_type != lchan->abis_ip.rtp_payload) { diff --git a/openbsc/src/libmsc/mncc_builtin.c b/openbsc/src/libmsc/mncc_builtin.c index 77df6fb..ee98d2d 100644 --- a/openbsc/src/libmsc/mncc_builtin.c +++ b/openbsc/src/libmsc/mncc_builtin.c @@ -138,7 +138,8 @@ static int mncc_setup_ind(struct gsm_call *call, int msg_type, memset(&mncc, 0, sizeof(struct gsm_mncc)); mncc.callref = call->callref; mncc.lchan_mode = determine_lchan_mode(setup); - DEBUGP(DMNCC, "(call %x) Modify channel mode.\n", call->callref); + DEBUGP(DMNCC, "(call %x) Modify channel mode: %s\n", call->callref, + get_value_string(gsm48_chan_mode_names, mncc.lchan_mode)); mncc_tx_to_cc(call->net, MNCC_LCHAN_MODIFY, &mncc);

/* send setup to remote */ diff --git a/openbsc/src/osmo-nitb/bsc_hack.c b/openbsc/src/osmo-nitb/bsc_hack.c index dffe642..0b360dc 100644 --- a/openbsc/src/osmo-nitb/bsc_hack.c +++ b/openbsc/src/osmo-nitb/bsc_hack.c @@ -288,8 +288,10 @@ int main(int argc, char **argv) rc = bsc_bootstrap_network(mncc_sock_from_cc, config_file); if (rc >= 0) mncc_sock_init(bsc_gsmnet, mncc_sock_path); - } else + } else { + DEBUGP(DMNCC, "Using internal MNCC handler.\n"); rc = bsc_bootstrap_network(int_mncc_recv, config_file); + } if (rc < 0) exit(1); #ifdef BUILD_SMPP