/* lchan release handling */
void msc_release_connection(struct gsm_subscriber_connection *conn)
{
/* skip when we are in release, e.g. due an error */
if (conn->in_release)
return;
/* skip releasing of silent calls as they have no transaction */
if (conn->silent_call)
return;
/* check if there is a pending operation */
if (conn->loc_operation || conn->sec_operation || conn->anch_operation)
return;
if (trans_has_conn(conn))
return;
/* no more connections, asking to release the channel */
/*
* We had stopped the LU expire timer T3212. Now we are about
* to send the MS back to the idle state and this should lead
* to restarting the timer. Set the new expiration time.
*/
if (conn->expire_timer_stopped)
subscr_update_expire_lu(conn->subscr, conn->bts);
conn->in_release = 1;
gsm0808_clear(conn);
if (conn->put_channel) {
conn->put_channel = 0;
subscr_put_channel(conn->subscr);
}
subscr_con_free(conn);
}
static int msc_compl_l3(struct gsm_subscriber_connection *conn, struct msgb *msg,
uint16_t chosen_channel)
{
gsm0408_new_conn(conn);
gsm0408_dispatch(conn, msg);
/* TODO: do better */
if (conn->silent_call)
return BSC_API_CONN_POL_ACCEPT;
if (conn->loc_operation || conn->sec_operation || conn->anch_operation)
return BSC_API_CONN_POL_ACCEPT;
if (trans_has_conn(conn))
return BSC_API_CONN_POL_ACCEPT;
return BSC_API_CONN_POL_REJECT;
}
static int msc_compl_l3(struct gsm_subscriber_connection *conn, struct msgb *msg,
uint16_t chosen_channel)
{
gsm0408_new_conn(conn);
gsm0408_dispatch(conn, msg);
/*
* If this is a silent call we want the channel to remain open as long as
* possible and this is why we accept this connection regardless of any
* pending transaction or ongoing operation.
*/
if (conn->silent_call)
return BSC_API_CONN_POL_ACCEPT;
if (conn->loc_operation || conn->sec_operation || conn->anch_operation)
return BSC_API_CONN_POL_ACCEPT;
if (trans_has_conn(conn))
return BSC_API_CONN_POL_ACCEPT;
LOGP(DRR, LOGL_INFO, "MSC Complete L3: Rejecting connection.\n");
return BSC_API_CONN_POL_REJECT;
}
