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-rw-r--r--openbsc/src/libmgcp/mgcp_osmux.c29
1 files changed, 28 insertions, 1 deletions
diff --git a/openbsc/src/libmgcp/mgcp_osmux.c b/openbsc/src/libmgcp/mgcp_osmux.c
index 90b73680b..2d39b2c5e 100644
--- a/openbsc/src/libmgcp/mgcp_osmux.c
+++ b/openbsc/src/libmgcp/mgcp_osmux.c
@@ -492,6 +492,19 @@ void osmux_disable_endpoint(struct mgcp_endpoint *endp)
osmux_handle_put(endp->osmux.in);
}
+void osmux_release_cid(struct mgcp_endpoint *endp)
+{
+ if (endp->osmux.allocated_cid >= 0)
+ osmux_put_cid(endp->osmux.allocated_cid);
+ endp->osmux.allocated_cid = -1;
+}
+
+void osmux_allocate_cid(struct mgcp_endpoint *endp)
+{
+ osmux_release_cid(endp);
+ endp->osmux.allocated_cid = osmux_get_cid();
+}
+
/* We don't need to send the dummy load for osmux so often as another endpoint
* may have already punched the hole in the firewall. This approach is simple
* though.
@@ -532,11 +545,25 @@ int osmux_send_dummy(struct mgcp_endpoint *endp)
/* bsc-nat allocates/releases the Osmux circuit ID */
static uint8_t osmux_cid_bitmap[16];
+int osmux_used_cid(void)
+{
+ int i, j, used = 0;
+
+ for (i = 0; i < sizeof(osmux_cid_bitmap); i++) {
+ for (j = 0; j < 8; j++) {
+ if (osmux_cid_bitmap[i] & (1 << j))
+ used += 1;
+ }
+ }
+
+ return used;
+}
+
int osmux_get_cid(void)
{
int i, j;
- for (i = 0; i < sizeof(osmux_cid_bitmap) / 8; i++) {
+ for (i = 0; i < sizeof(osmux_cid_bitmap); i++) {
for (j = 0; j < 8; j++) {
if (osmux_cid_bitmap[i] & (1 << j))
continue;