nat: Extract the LAC/CI from the Complete Layer3 Information
Find the Cell Identifier from the Complete Layer3 Information and
store it for future reference. We could begin to verify that the
LAC/CI used really belongs to the BSC.
diff --git a/openbsc/tests/bsc-nat/bsc_nat_test.c b/openbsc/tests/bsc-nat/bsc_nat_test.c
index 18668bb..cbc1f18 100644
--- a/openbsc/tests/bsc-nat/bsc_nat_test.c
+++ b/openbsc/tests/bsc-nat/bsc_nat_test.c
@@ -28,6 +28,7 @@
#include <openbsc/bsc_nat_sccp.h>
#include <osmocom/core/application.h>
+#include <osmocom/core/backtrace.h>
#include <osmocom/core/talloc.h>
#include <osmocom/sccp/sccp.h>
@@ -1276,6 +1277,39 @@
}
}
+static void test_nat_extract_lac()
+{
+ int res;
+ struct bsc_connection *bsc;
+ struct bsc_nat *nat;
+ struct nat_sccp_connection con;
+ struct bsc_nat_parsed *parsed;
+ struct msgb *msg = msgb_alloc(4096, "test-message");
+
+ printf("Testing LAC extraction from SCCP CR\n");
+
+ /* initialize the testcase */
+ nat = bsc_nat_alloc();
+ bsc = bsc_connection_alloc(nat);
+ bsc->cfg = bsc_config_alloc(nat, "foo");
+
+ memset(&con, 0, sizeof(con));
+ con.bsc = bsc;
+
+ /* create the SCCP CR */
+ msg->l2h = msgb_put(msg, ARRAY_SIZE(bssmap_cr));
+ memcpy(msg->l2h, bssmap_cr, ARRAY_SIZE(bssmap_cr));
+
+ /* parse it and pass it on */
+ parsed = bsc_nat_parse(msg);
+ res = bsc_nat_extract_lac(bsc, &con, parsed, msg);
+ OSMO_ASSERT(res == 0);
+
+ /* verify the LAC */
+ OSMO_ASSERT(con.lac == 8210);
+ OSMO_ASSERT(con.ci == 50000);
+}
+
int main(int argc, char **argv)
{
sccp_set_log_area(DSCCP);
@@ -1295,6 +1329,7 @@
test_sms_number_rewrite();
test_mgcp_allocations();
test_barr_list_parsing();
+ test_nat_extract_lac();
printf("Testing execution completed.\n");
return 0;