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mgcp: use mgcp DLCX command to terminate endpoint after call is done 

Currently no DLCX command is sent to the mgcpgw when a call is over,
this leaves the endpoint open. This means that the endpoint can not
never be reused by other calls. This patch adds a DLCX that
terminates the the endpoint when the call is done.

Change-Id: Ifc5a7a62fc07b4b7fee612d52e949fcd6a8e04ed
This commit is contained in:
Philipp Maier 2017-06-08 12:21:07 +02:00 committed by Neels Hofmeyr
parent 253fc0b82e
commit 30c749e089
3 changed files with 18 additions and 0 deletions
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1
include/openbsc/msc_ifaces.h
View File

@ -55,3 +55,4 @@ int msc_gsm0808_tx_cipher_mode(struct gsm_subscriber_connection *conn, int ciphe
int msc_tx_common_id(struct gsm_subscriber_connection *conn);
int msc_call_assignment(struct gsm_trans *trans);
int msc_call_bridge(struct gsm_trans *trans1, struct gsm_trans *trans2);
void msc_call_release(struct gsm_trans *trans);

3
src/libmsc/gsm_04_08.c
View File

@ -1333,6 +1333,9 @@ void _gsm48_cc_trans_free(struct gsm_trans *trans)
{
gsm48_stop_cc_timer(trans);
/* Make sure call also gets released on the mgcp side */
msc_call_release(trans);
/* send release to L4, if callref still exists */
if (trans->callref) {
/* Ressource unavailable */

14
src/libmsc/msc_ifaces.c
View File

@ -328,3 +328,17 @@ int msc_call_bridge(struct gsm_trans *trans1, struct gsm_trans *trans2)
return 0;
}
void msc_call_release(struct gsm_trans *trans)
{
struct msgb *msg;
struct gsm_subscriber_connection *conn = trans->conn;
struct mgcpgw_client *mgcp = conn->network->mgcpgw.client;
msg = mgcp_msg_dlcx(mgcp, conn->iu.mgcp_rtp_endpoint);
if (mgcpgw_client_tx(mgcp, msg, NULL, NULL))
LOGP(DMGCP, LOGL_ERROR,
"Failed to send DLCX message for %s\n",
vlr_subscr_name(trans->vsub));
}