msc: Add and use gsm_subscriber_group
Currently every subcriber object directly refers to the gsm_network
which contains a flag shared by every related subscriber
(keep_subscr). This adds a dependency on gsm_network even if only the
function defined in gsm_subscriber_base.c are used.
This patch adds a new struct gsm_subscriber_group which contains the
keep_subscr flag and a back reference to the network object. The
latter is not dereferenced in gsm_subscriber_base.c, so it can safely
be set to NULL when only that part of the gsm_subscriber API is being
used. It also changes that API to use gsm_subscriber_group instead of
gsm_network parameters.
Since there are some places where a pointer to the gsm_network is
needed but where only a gsm_subscriber is available, a 'net' back
pointer is added to the group struct, too. Nevertheless subscr group
and network could be separated completely, but this is not the topic
of this commit.
Sponsored-by: On-Waves ehf
diff --git a/openbsc/src/libmsc/gsm_04_11.c b/openbsc/src/libmsc/gsm_04_11.c
index 1c46b96..bc9d59e 100644
--- a/openbsc/src/libmsc/gsm_04_11.c
+++ b/openbsc/src/libmsc/gsm_04_11.c
@@ -392,7 +392,8 @@
send_signal(0, NULL, gsms, 0);
/* determine gsms->receiver based on dialled number */
- gsms->receiver = subscr_get_by_extension(conn->bts->network, gsms->dst.addr);
+ gsms->receiver = subscr_get_by_extension(conn->bts->network->subscr_group,
+ gsms->dst.addr);
if (!gsms->receiver) {
#ifdef BUILD_SMPP
rc = smpp_try_deliver(gsms, conn);