channel requests: Add configuration to handle paging any with TCH

It is possible that the MSC is not sending the channel type it
needs for the operations it wants to do. Add a configuration option
to assign a TCH in case of paging any requests. It can be a good
idea to leave SDCCHs free for location updating requests.

3 files changed, 27 insertions, 0 deletions

diff --git a/openbsc/include/openbsc/gsm_data.h b/openbsc/include/openbsc/gsm_data.h
index c8fee474b..88f8ab31b 100644
--- a/openbsc/include/openbsc/gsm_data.h
+++ b/openbsc/include/openbsc/gsm_data.h
@@ -626,6 +626,9 @@ struct gsm_network {
 
 	enum gsm_chan_t ctype_by_chreq[16];
 
+	/* Use a TCH for handling requests of type paging any */
+	int pag_any_tch;
+
 	/* a hack for On Waves. It must be signed */
 	int32_t core_country_code;
 	int32_t core_network_code;
diff --git a/openbsc/src/gsm_04_08_utils.c b/openbsc/src/gsm_04_08_utils.c
index ad1040b3b..f787dee64 100644
--- a/openbsc/src/gsm_04_08_utils.c
+++ b/openbsc/src/gsm_04_08_utils.c
@@ -185,6 +185,16 @@ void gsm_net_update_ctype(struct gsm_network *network)
 	 */
 	if (network->neci)
 		network->ctype_by_chreq[CHREQ_T_EMERG_CALL] = GSM_LCHAN_TCH_H;
+
+	if (network->pag_any_tch) {
+		if (network->neci) {
+			network->ctype_by_chreq[CHREQ_T_PAG_R_ANY_NECI0] = GSM_LCHAN_TCH_H;
+			network->ctype_by_chreq[CHREQ_T_PAG_R_ANY_NECI1] = GSM_LCHAN_TCH_H;
+		} else {
+			network->ctype_by_chreq[CHREQ_T_PAG_R_ANY_NECI0] = GSM_LCHAN_TCH_F;
+			network->ctype_by_chreq[CHREQ_T_PAG_R_ANY_NECI1] = GSM_LCHAN_TCH_F;
+		}
+	}
 }
 
 enum gsm_chan_t get_ctype_by_chreq(struct gsm_network *network, u_int8_t ra)
diff --git a/openbsc/src/vty_interface.c b/openbsc/src/vty_interface.c
index a5ed0d21a..8cafa42cc 100644
--- a/openbsc/src/vty_interface.c
+++ b/openbsc/src/vty_interface.c
@@ -117,6 +117,8 @@ static void net_dump_vty(struct vty *vty, struct gsm_network *net)
 		VTY_NEWLINE);
 	vty_out(vty, "  NECI (TCH/H): %u%s", net->neci,
 		VTY_NEWLINE);
+	vty_out(vty, "  Use TCH for Paging any: %d%s", net->pag_any_tch,
+		VTY_NEWLINE);
 	vty_out(vty, "  RRLP Mode: %s%s", rrlp_mode_name(net->rrlp.mode),
 		VTY_NEWLINE);
 	vty_out(vty, "  MM Info: %s%s", net->send_mm_info ? "On" : "Off",
@@ -376,6 +378,7 @@ static int config_write_net(struct vty *vty)
 		gsmnet->reject_cause, VTY_NEWLINE);
 	vty_out(vty, " encryption a5 %u%s", gsmnet->a5_encryption, VTY_NEWLINE);
 	vty_out(vty, " neci %u%s", gsmnet->neci, VTY_NEWLINE);
+	vty_out(vty, " paging any use tch %d%s", gsmnet->pag_any_tch, VTY_NEWLINE);
 	vty_out(vty, " rrlp mode %s%s", rrlp_mode_name(gsmnet->rrlp.mode),
 		VTY_NEWLINE);
 	vty_out(vty, " mm info %u%s", gsmnet->send_mm_info, VTY_NEWLINE);
@@ -1448,6 +1451,16 @@ DEFUN(cfg_net_bsc_token,
 	return CMD_SUCCESS;
 }
 
+DEFUN(cfg_net_pag_any_tch,
+      cfg_net_pag_any_tch_cmd,
+      "paging any use tch (0|1)",
+      "Assign a TCH when receiving a Paging Any request")
+{
+	gsmnet->pag_any_tch = atoi(argv[0]);
+	gsm_net_update_ctype(gsmnet);
+	return CMD_SUCCESS;
+}
+
 #define DECLARE_TIMER(number, doc) \
     DEFUN(cfg_net_T##number,					\
       cfg_net_T##number##_cmd,					\
@@ -2153,6 +2166,7 @@ int bsc_vty_init(struct gsm_network *net)
 	install_element(GSMNET_NODE, &cfg_net_T3119_cmd);
 	install_element(GSMNET_NODE, &cfg_net_T3141_cmd);
 	install_element(GSMNET_NODE, &cfg_net_bsc_token_cmd);
+	install_element(GSMNET_NODE, &cfg_net_pag_any_tch_cmd);
 
 	install_element(GSMNET_NODE, &cfg_bts_cmd);
 	install_node(&bts_node, config_write_bts);