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Diffstat (limited to 'openbsc/src/libmsc/gsm_subscriber.c')
-rw-r--r--openbsc/src/libmsc/gsm_subscriber.c148
1 files changed, 31 insertions, 117 deletions
diff --git a/openbsc/src/libmsc/gsm_subscriber.c b/openbsc/src/libmsc/gsm_subscriber.c
index ef7260660..09c5e5d71 100644
--- a/openbsc/src/libmsc/gsm_subscriber.c
+++ b/openbsc/src/libmsc/gsm_subscriber.c
@@ -41,25 +41,14 @@
#include <openbsc/chan_alloc.h>
#include <openbsc/vlr.h>
#include <openbsc/iu.h>
+#include <openbsc/osmo_msc.h>
+#include <openbsc/msc_ifaces.h>
void *tall_sub_req_ctx;
int gsm48_secure_channel(struct gsm_subscriber_connection *conn, int key_seq,
gsm_cbfn *cb, void *cb_data);
-static struct bsc_subscr *vlr_subscr_to_bsc_sub(struct llist_head *bsc_subscribers,
- struct vlr_subscr *vsub)
-{
- struct bsc_subscr *sub;
- /* TODO MSC split -- creating a BSC subscriber directly from MSC data
- * structures in RAM. At some point the MSC will send a message to the
- * BSC instead. */
- sub = bsc_subscr_find_or_create_by_imsi(bsc_subscribers, vsub->imsi);
- sub->tmsi = vsub->tmsi;
- sub->lac = vsub->lac;
- return sub;
-}
-
/* A connection is established and the paging callbacks may run now. */
int subscr_paging_dispatch(unsigned int hooknum, unsigned int event,
struct msgb *msg, void *data, void *param)
@@ -68,36 +57,34 @@ int subscr_paging_dispatch(unsigned int hooknum, unsigned int event,
struct gsm_subscriber_connection *conn = data;
struct vlr_subscr *vsub = param;
struct paging_signal_data sig_data;
- struct bsc_subscr *bsub;
- struct gsm_network *net;
OSMO_ASSERT(vsub);
- net = vsub->vlr->user_ctx;
OSMO_ASSERT(hooknum == GSM_HOOK_RR_PAGING);
OSMO_ASSERT(!(conn && (conn->vsub != vsub)));
OSMO_ASSERT(!((event == GSM_PAGING_SUCCEEDED) && !conn));
LOGP(DPAG, LOGL_DEBUG, "Paging %s for %s (event=%d)\n",
event == GSM_PAGING_SUCCEEDED ? "success" : "failure",
- subscr_name(subscr), event);
+ vlr_subscr_name(vsub), event);
- if (!subscr->is_paging) {
+ if (!vsub->cs.is_paging) {
LOGP(DPAG, LOGL_ERROR,
"Paging Response received for subscriber"
" that is not paging.\n");
return -EINVAL;
}
+ if (event == GSM_PAGING_SUCCEEDED)
+ msc_stop_paging(vsub);
+
/* Inform parts of the system we don't know */
- sig_data.vsub = vsub;
- sig_data.conn = conn;
+ sig_data.vsub = vsub;
+ sig_data.conn = conn;
sig_data.paging_result = event;
- osmo_signal_dispatch(
- SS_PAGING,
- event == GSM_PAGING_SUCCEEDED ?
- S_PAGING_SUCCEEDED : S_PAGING_EXPIRED,
- &sig_data
- );
+ osmo_signal_dispatch(SS_PAGING,
+ event == GSM_PAGING_SUCCEEDED ?
+ S_PAGING_SUCCEEDED : S_PAGING_EXPIRED,
+ &sig_data);
llist_for_each_entry_safe(request, tmp, &vsub->cs.requests, entry) {
llist_del(&request->entry);
@@ -115,99 +102,28 @@ int subscr_paging_dispatch(unsigned int hooknum, unsigned int event,
return 0;
}
-static void paging_timeout_release(struct gsm_subscriber *subscr)
-{
- DEBUGP(DPAG, "Paging timeout released for %s\n", subscr_name(subscr));
- osmo_timer_del(&subscr->paging_timeout);
-}
-
-static void paging_timeout(void *data)
-{
- struct gsm_subscriber *subscr = data;
- DEBUGP(DPAG, "Paging timeout reached for %s\n", subscr_name(subscr));
- paging_timeout_release(subscr);
- subscr_paging_dispatch(GSM_HOOK_RR_PAGING, GSM_PAGING_EXPIRED,
- NULL, NULL, subscr);
-}
-
-static void paging_timeout_start(struct gsm_subscriber *subscr)
-{
- DEBUGP(DPAG, "Starting paging timeout for %s\n", subscr_name(subscr));
- subscr->paging_timeout.data = subscr;
- subscr->paging_timeout.cb = paging_timeout;
- osmo_timer_schedule(&subscr->paging_timeout, 10, 0);
- /* TODO: configurable timeout duration? */
-}
-
-
-static int subscr_paging_sec_cb(unsigned int hooknum, unsigned int event,
- struct msgb *msg, void *data, void *param)
-{
- int rc;
- struct gsm_subscriber_connection *conn = data;
- OSMO_ASSERT(conn);
-
- switch (event) {
- case GSM_SECURITY_AUTH_FAILED:
- LOGP(DPAG, LOGL_ERROR,
- "Dropping Paging Response:"
- " authorization failed for subscriber %s\n",
- subscr_name(conn->subscr));
- rc = subscr_paging_dispatch(
- GSM_HOOK_RR_PAGING, GSM_PAGING_EXPIRED,
- msg, conn, conn->subscr);
- break;
-
- case GSM_SECURITY_NOAVAIL:
- case GSM_SECURITY_SUCCEEDED:
- rc = subscr_paging_dispatch(
- GSM_HOOK_RR_PAGING, GSM_PAGING_SUCCEEDED,
- msg, conn, conn->subscr);
- break;
-
- default:
- LOGP(DPAG, LOGL_FATAL,
- "Invalid authorization event: %d\n", event);
- rc = -EINVAL;
- }
-
- return rc;
-}
-
-int subscr_rx_paging_response(struct msgb *msg,
- struct gsm_subscriber_connection *conn)
-{
- struct gsm48_hdr *gh;
- struct gsm48_pag_resp *pr;
-
- /* Get key_seq from Paging Response headers */
- gh = msgb_l3(msg);
- pr = (struct gsm48_pag_resp *)gh->data;
-
- paging_timeout_release(conn->subscr);
-
- /* Secure the connection */
- if (subscr_authorized(conn->subscr))
- return gsm48_secure_channel(conn, pr->key_seq,
- subscr_paging_sec_cb, NULL);
-
- /* Not authorized. Failure. */
- subscr_paging_sec_cb(GSM_HOOK_RR_SECURITY, GSM_SECURITY_AUTH_FAILED,
- msg, conn, NULL);
- return -1;
-}
-
-static int msc_paging_request(struct gsm_subscriber *subscr)
+int msc_paging_request(struct vlr_subscr *vsub)
{
/* The subscriber was last seen in subscr->lac. Find out which
* BSCs/RNCs are responsible and send them a paging request via open
* SCCP connections (if any). */
/* TODO Implementing only RNC paging, since this is code on the iu branch.
* Need to add BSC paging at some point. */
- return iu_page_cs(subscr->imsi,
- subscr->tmsi == GSM_RESERVED_TMSI?
- NULL : &subscr->tmsi,
- subscr->lac);
+ switch (vsub->cs.attached_via_ran) {
+ case RAN_GERAN_A:
+ return a_page(vsub->imsi, vsub->tmsi, vsub->lac);
+ case RAN_UTRAN_IU:
+ return iu_page_cs(vsub->imsi,
+ vsub->tmsi == GSM_RESERVED_TMSI?
+ NULL : &vsub->tmsi,
+ vsub->lac);
+ default:
+ break;
+ }
+
+ LOGP(DPAG, LOGL_ERROR, "%s: Cannot page, subscriber not attached\n",
+ vlr_subscr_name(vsub));
+ return -EINVAL;
}
struct subscr_request *subscr_request_conn(struct vlr_subscr *vsub,
@@ -215,11 +131,9 @@ struct subscr_request *subscr_request_conn(struct vlr_subscr *vsub,
{
int rc;
struct subscr_request *request;
- struct bsc_subscr *bsub;
- struct gsm_network *net = vsub->vlr->user_ctx;
/* Start paging.. we know it is async so we can do it before */
- if (!subscr->is_paging) {
+ if (!vsub->cs.is_paging) {
LOGP(DMM, LOGL_DEBUG, "Subscriber %s not paged yet, start paging.\n",
vlr_subscr_name(vsub));
rc = msc_paging_request(vsub);
@@ -233,7 +147,7 @@ struct subscr_request *subscr_request_conn(struct vlr_subscr *vsub,
vsub->cs.is_paging = true;
} else {
LOGP(DMM, LOGL_DEBUG, "Subscriber %s already paged.\n",
- subscr_name(subscr));
+ vlr_subscr_name(vsub));
}
/* TODO: Stop paging in case of memory allocation failure */
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-24 06:32:11 +0000