chan: Store the to be assigned channel type in the GSM Network.

Store the mapping from request to channel type in the GSM Network
struct as there is some policy involved with handling the request.

E.g. in a half rate network we don't want emergy calls to be getting
a TCH/F, or we want to have a different policy for early/late assignment
of phone calls. Update the table when creating the network and when
the neci is changed.

2 files changed, 5 insertions, 2 deletions

diff --git a/openbsc/include/openbsc/gsm_04_08.h b/openbsc/include/openbsc/gsm_04_08.h
index aa070eb0a..15ac1b3fa 100644
--- a/openbsc/include/openbsc/gsm_04_08.h
+++ b/openbsc/include/openbsc/gsm_04_08.h
@@ -29,8 +29,9 @@ int gsm0408_dispatch(struct gsm_subscriber_connection *conn, struct msgb *msg);
 
 int gsm0408_rcvmsg(struct msgb *msg, u_int8_t link_id);
 int gsm0408_new_conn(struct gsm_subscriber_connection *conn);
-enum gsm_chan_t get_ctype_by_chreq(struct gsm_bts *bts, u_int8_t ra, int neci);
-enum gsm_chreq_reason_t get_reason_by_chreq(struct gsm_bts *bts, u_int8_t ra, int neci);
+enum gsm_chan_t get_ctype_by_chreq(struct gsm_network *bts, u_int8_t ra);
+enum gsm_chreq_reason_t get_reason_by_chreq(u_int8_t ra, int neci);
+void gsm_net_update_ctype(struct gsm_network *net);
 
 int gsm48_tx_mm_info(struct gsm_subscriber_connection *conn);
 int gsm48_tx_mm_auth_req(struct gsm_subscriber_connection *conn, u_int8_t *rand, int key_seq);
diff --git a/openbsc/include/openbsc/gsm_data.h b/openbsc/include/openbsc/gsm_data.h
index fe021e945..d97dc4f9e 100644
--- a/openbsc/include/openbsc/gsm_data.h
+++ b/openbsc/include/openbsc/gsm_data.h
@@ -713,6 +713,8 @@ struct gsm_network {
 	/* enable the DTXu and DTXd for this network */
 	int dtx_enabled;
 
+	enum gsm_chan_t ctype_by_chreq[16];
+
 	int msc_prio;
 };