nat: Rewrite the paging handling.

The current code tries to find _one_ bsc for a paging message
and then continues. The new code will try to find multiple BSCs
for each LAC. This is done in preparation of having two BSCs
handle the same LAC. This code right now is O(m*n) but it will
be worse once paging groups are landed.
The code to test the function was reduced to just test the lac
lookup code as the other part can not be tested in a standalone
setup anymore.

1 files changed, 3 insertions, 20 deletions

diff --git a/openbsc/tests/bsc-nat/bsc_nat_test.c b/openbsc/tests/bsc-nat/bsc_nat_test.c
index 50da1e904..8c0abc262 100644
--- a/openbsc/tests/bsc-nat/bsc_nat_test.c
+++ b/openbsc/tests/bsc-nat/bsc_nat_test.c
@@ -384,12 +384,9 @@ static void test_contrack()
 
 static void test_paging(void)
 {
-	int lac;
 	struct bsc_nat *nat;
 	struct bsc_connection *con;
-	struct bsc_nat_parsed *parsed;
 	struct bsc_config *cfg;
-	struct msgb *msg;
 
 	fprintf(stderr, "Testing paging by lac.\n");
 
@@ -400,34 +397,20 @@ static void test_paging(void)
 	bsc_config_add_lac(cfg, 23);
 	con->authenticated = 1;
 	llist_add(&con->list_entry, &nat->bsc_connections);
-	msg = msgb_alloc(4096, "test");
-
-	/* Test completely bad input */
-	copy_to_msg(msg, paging_by_lac_cmd, sizeof(paging_by_lac_cmd));
-	if (bsc_nat_find_bsc(nat, msg, &lac) != 0) {
-		fprintf(stderr, "Should have not found anything.\n");
-		abort();
-	}
 
 	/* Test it by not finding it */
-	copy_to_msg(msg, paging_by_lac_cmd, sizeof(paging_by_lac_cmd));
-	parsed = bsc_nat_parse(msg);
-	if (bsc_nat_find_bsc(nat, msg, &lac) != 0) {
-		fprintf(stderr, "Should have not found aynthing.\n");
+	if (bsc_config_handles_lac(cfg, 8213) != 0) {
+		fprintf(stderr, "Should not be handled.\n");
 		abort();
 	}
-	talloc_free(parsed);
 
 	/* Test by finding it */
 	bsc_config_del_lac(cfg, 23);
 	bsc_config_add_lac(cfg, 8213);
-	copy_to_msg(msg, paging_by_lac_cmd, sizeof(paging_by_lac_cmd));
-	parsed = bsc_nat_parse(msg);
-	if (bsc_nat_find_bsc(nat, msg, &lac) != con) {
+	if (bsc_config_handles_lac(cfg, 8213) == 0) {
 		fprintf(stderr, "Should have found it.\n");
 		abort();
 	}
-	talloc_free(parsed);
 }
 
 static void test_mgcp_allocations(void)