libmsc/gsm_04_11.c: accept MT SMS messages over GSUP

Change-Id: I57357982ca0e51f6722c24a4aa1d0fb3e6caef88
Depends-on: (core) Ibe325c64ae2d6c626b232533bb4cbc65fc2b5d71
Depends-on: (OsmoHLR) I0589ff27933e9bca2bcf93b8259004935778db8f
Related Change-Id: (TTCN) I63a25c8366cce0852df6b628365151661a22a25f
Related: OS#3587
diff --git a/include/osmocom/msc/gsm_04_11_gsup.h b/include/osmocom/msc/gsm_04_11_gsup.h
index 94ff8f6..969eaba 100644
--- a/include/osmocom/msc/gsm_04_11_gsup.h
+++ b/include/osmocom/msc/gsm_04_11_gsup.h
@@ -12,3 +12,9 @@
 	uint8_t sm_rp_mr, uint8_t *sm_rp_da, uint8_t sm_rp_da_len);
 int gsm411_gsup_mo_handler(struct vlr_subscr *vsub,
 	struct osmo_gsup_message *gsup_msg);
+
+int gsm411_gsup_mt_fwd_sm_res(struct gsm_trans *trans, uint8_t sm_rp_mr);
+int gsm411_gsup_mt_fwd_sm_err(struct gsm_trans *trans,
+	uint8_t sm_rp_mr, uint8_t cause);
+int gsm411_gsup_mt_handler(struct vlr_subscr *vsub,
+	struct osmo_gsup_message *gsup_msg);