nat: Make it possible to send MGCP messages through the IPA multiplex
Instead of handling MGCP through the UDP socket, read and write messages
through the ipa connection to the MSC.
diff --git a/openbsc/src/osmo-bsc_nat/bsc_nat.c b/openbsc/src/osmo-bsc_nat/bsc_nat.c
index 792d33c..e70f549 100644
--- a/openbsc/src/osmo-bsc_nat/bsc_nat.c
+++ b/openbsc/src/osmo-bsc_nat/bsc_nat.c
@@ -333,6 +333,12 @@
bsc_write_mgcp(bsc, mgcp_reset, sizeof mgcp_reset - 1);
}
+void bsc_nat_send_mgcp_to_msc(struct bsc_nat *nat, struct msgb *msg)
+{
+ ipaccess_prepend_header(msg, IPAC_PROTO_MGCP_OLD);
+ queue_for_msc(nat->msc_con, msg);
+}
+
/*
* Below is the handling of messages coming
* from the MSC and need to be forwarded to
@@ -820,8 +826,11 @@
initialize_msc_if_needed(msc_con);
else if (msg->l2h[0] == IPAC_MSGT_ID_GET)
send_id_get_response(msc_con);
- } else if (hh->proto == IPAC_PROTO_SCCP)
+ } else if (hh->proto == IPAC_PROTO_SCCP) {
forward_sccp_to_bts(msc_con, msg);
+ } else if (hh->proto == IPAC_PROTO_MGCP_OLD) {
+ bsc_nat_handle_mgcp(nat, msg);
+ }
msgb_free(msg);
return 0;