drop all BSC originated USSD notification features

The BSC is the wrong network component to originate USSD messaging, as can be
seen in the hacks in the USSD code: for example, the BSC would send a CM
Service Accept message as if an MSC had accepted the connection, dispatch a
USSD and directly send some RR release message (without proper tear down
messaging like the lchan_fsm does these days). This made sense in the osmo-nitb
world, but by now we are aiming for solid 3GPP compliance. The BSC shall not
originate USSD messages.

Deprecate all VTY and CTRL commands related to USSD:
VTY
 [no] bsc-welcome-text
 [no] bsc-msc-lost-text
 [no] bsc-grace-text
 [no] missing-msc-text
 (the commands with 'no' are ignored, without 'no' lead to an error)
CTRL
 ussd-notify-v1

Drop (already unused) ussd.h.
Drop gsm_04_80.h, gsm_04_80_utils.c, and all calling code.

Drop "RF grace" notification, where osmo-bsc was able to notify active
subscribers that the RF was being turned off.

Change-Id: Iaef6f2e01b4dbf2bff0a0bb50d6851f50ae79f6a

1 files changed, 0 insertions, 13 deletions

diff --git a/include/osmocom/bsc/bsc_msc_data.h b/include/osmocom/bsc/bsc_msc_data.h
index 27eb75d51..b4973451f 100644
--- a/include/osmocom/bsc/bsc_msc_data.h
+++ b/include/osmocom/bsc/bsc_msc_data.h
@@ -133,17 +133,8 @@ struct bsc_msc_data {
 	enum bsc_lcls_mode lcls_mode;
 	bool lcls_codec_mismatch_allow;
 
-	/* ussd welcome text */
-	char *ussd_welcome_txt;
-
 	int nr;
 
-	/* ussd msc connection lost text */
-	char *ussd_msc_lost_txt;
-
-	/* ussd text when MSC has entered the grace period */
-	char *ussd_grace_txt;
-
 	/* structures for keeping rate counters and gauge stats */
 	struct rate_ctr_group *msc_ctrs;
 	struct osmo_stat_item_group *msc_statg;
@@ -207,15 +198,11 @@ struct osmo_bsc_data {
 	struct llist_head mscs;
 
 	/* rf ctl related bits */
-	char *mid_call_txt;
 	int mid_call_timeout;
 	char *rf_ctrl_name;
 	struct osmo_bsc_rf *rf_ctrl;
 	int auto_off_timeout;
 
-	/* ussd text when there is no MSC available */
-	char *ussd_no_msc_txt;
-
 	struct bsc_cbc_link *cbc;
 };