[gsm0408] Move paging handling to gsm_04_08_utils.c
Add one method to extract the MI which will allow to load
the gsm_subscriber depending on the MSC/BSC setup and then
use gsm48_handle_paging_resp to finish the paging response
handling.
diff --git a/openbsc/src/gsm_04_08_utils.c b/openbsc/src/gsm_04_08_utils.c
index c9cbd5c..47ec8ab 100644
--- a/openbsc/src/gsm_04_08_utils.c
+++ b/openbsc/src/gsm_04_08_utils.c
@@ -32,6 +32,8 @@
#include <openbsc/debug.h>
#include <openbsc/gsm_04_08.h>
#include <openbsc/transaction.h>
+#include <openbsc/paging.h>
+#include <openbsc/signal.h>
#define GSM48_ALLOC_SIZE 1024
#define GSM48_ALLOC_HEADROOM 128
@@ -413,3 +415,45 @@
return rsl_siemens_mrpci(lchan, &mrpci);
}
+int gsm48_paging_extract_mi(struct msgb *msg, char *mi_string, u_int8_t *mi_type)
+{
+ struct gsm48_hdr *gh = msgb_l3(msg);
+ u_int8_t *classmark2_lv = gh->data + 1;
+ u_int8_t *mi_lv = gh->data + 2 + *classmark2_lv;
+ *mi_type = mi_lv[1] & GSM_MI_TYPE_MASK;
+
+ return gsm48_mi_to_string(mi_string, GSM48_MI_SIZE, mi_lv+1, *mi_lv);
+}
+
+int gsm48_handle_paging_resp(struct msgb *msg, struct gsm_subscriber *subscr)
+{
+ struct gsm_bts *bts = msg->lchan->ts->trx->bts;
+ struct gsm48_hdr *gh = msgb_l3(msg);
+ u_int8_t *classmark2_lv = gh->data + 1;
+ struct paging_signal_data sig_data;
+
+ if (is_siemens_bts(bts))
+ send_siemens_mrpci(msg->lchan, classmark2_lv);
+
+ if (!msg->lchan->subscr) {
+ msg->lchan->subscr = subscr;
+ } else if (msg->lchan->subscr != subscr) {
+ DEBUGP(DRR, "<- Channel already owned by someone else?\n");
+ subscr_put(subscr);
+ return -EINVAL;
+ } else {
+ DEBUGP(DRR, "<- Channel already owned by us\n");
+ subscr_put(subscr);
+ subscr = msg->lchan->subscr;
+ }
+
+ sig_data.subscr = subscr;
+ sig_data.bts = msg->lchan->ts->trx->bts;
+ sig_data.lchan = msg->lchan;
+
+ dispatch_signal(SS_PAGING, S_PAGING_COMPLETED, &sig_data);
+
+ /* Stop paging on the bts we received the paging response */
+ paging_request_stop(msg->trx->bts, subscr, msg->lchan);
+ return 0;
+}