Review at https://gerrit.osmocom.org/4963
bssap: remove libosmo-legacy-mgcp dependancy
the functions mgcp_timeslot_to_endpoint() and rtp_calculate_port()
which are used to calculate the port in the sccp-lite / non AoIP
case are part of libosmo-legacy-mgcp. Unfortunately libosmo-mgcp
and libosmo-legacy-mgcp cause problems when used at the same
time.
Replace the functions mgcp_timeslot_to_endpoint() and rtp_calculate_port()
with a local helper function.
Change-Id: Id10311332aeabd8fd3ba1922198e34708e04cef9
---
M src/osmo-bsc/osmo_bsc_bssap.c
1 file changed, 15 insertions(+), 4 deletions(-)
git pull ssh://gerrit.osmocom.org:29418/osmo-bsc refs/changes/63/4963/1
diff --git a/src/osmo-bsc/osmo_bsc_bssap.c b/src/osmo-bsc/osmo_bsc_bssap.c
index 59c2979..73776ad 100644
--- a/src/osmo-bsc/osmo_bsc_bssap.c
+++ b/src/osmo-bsc/osmo_bsc_bssap.c
@@ -24,7 +24,6 @@
#include <osmocom/bsc/bsc_msc_data.h>
#include <osmocom/bsc/debug.h>
#include <osmocom/bsc/bsc_subscriber.h>
-#include <osmocom/legacy_mgcp/mgcp.h>
#include <osmocom/bsc/osmo_bsc_mgcp.h>
#include <osmocom/bsc/paging.h>
#include <osmocom/bsc/gsm_04_08_utils.h>
@@ -454,6 +453,19 @@
return -1;
}
+/* Helper function to calculate the port number for a given
+ * timeslot/multiplex. This functionality is needed to support
+ * the sccp-lite scenario where the MGW is handled externally */
+static inline int mgcp_timeslot_to_port(int multiplex, int timeslot, int base)
+{
+ if (timeslot == 0) {
+ LOGP(DLMGCP, LOGL_ERROR, "Timeslot should not be 0\n");
+ timeslot = 255;
+ }
+
+ return base + (timeslot + (32 * multiplex)) * 2;
+}
+
/*
* Handle the assignment request message.
*
@@ -468,7 +480,7 @@
uint8_t timeslot = 0;
uint8_t multiplex = 0;
enum gsm48_chan_mode chan_mode = GSM48_CMODE_SIGN;
- int port, full_rate = -1;
+ int full_rate = -1;
bool aoip = false;
struct sockaddr_storage rtp_addr;
struct gsm0808_channel_type ct;
@@ -603,8 +615,7 @@
* (the MSC does that for us). We set conn->rtp_ip to 0 and
check
* on this later. By this we know that we have to behave
accordingly
* to sccp-lite. */
- port = mgcp_timeslot_to_endpoint(multiplex, timeslot);
- conn->rtp_port = rtp_calculate_port(port, msc->rtp_base);
+ conn->rtp_port = mgcp_timeslot_to_port(multiplex, timeslot,
msc->rtp_base);
conn->rtp_ip = 0;
return gsm0808_assign_req(conn->conn, chan_mode, full_rate);
}
--
To view, visit https://gerrit.osmocom.org/4963
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Gerrit-MessageType: newchange
Gerrit-Change-Id: Id10311332aeabd8fd3ba1922198e34708e04cef9
Gerrit-PatchSet: 1
Gerrit-Project: osmo-bsc
Gerrit-Branch: master
Gerrit-Owner: dexter <[email protected]>
