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authorJacob Erlbeck <jerlbeck@sysmocom.de>2014-10-29 12:11:58 +0100
committerHolger Hans Peter Freyther <holger@moiji-mobile.com>2014-11-11 22:47:59 +0100
commit27cb4d57e049b173fb4cacc78b947f70c691c111 (patch)
treeeb6204194755f6208d2ab40831339ab6f92d2f5c
parent94ef1c0da9a80869256e6a5966d1f1571955c813 (diff)
sgsn/test: Add test_gmm_attach
This test checks the attach procedure until the Attach Complete is received. Note that authorization and GMM state updates are not working properly yet. Sponsored-by: On-Waves ehf
-rw-r--r--openbsc/tests/sgsn/sgsn_test.c123
-rw-r--r--openbsc/tests/sgsn/sgsn_test.ok1
2 files changed, 123 insertions, 1 deletions
diff --git a/openbsc/tests/sgsn/sgsn_test.c b/openbsc/tests/sgsn/sgsn_test.c
index 60e8bf288..814b45740 100644
--- a/openbsc/tests/sgsn/sgsn_test.c
+++ b/openbsc/tests/sgsn/sgsn_test.c
@@ -289,12 +289,130 @@ static void test_gmm_status_no_mmctx(void)
OSMO_ASSERT(count(gprs_llme_list()) == 0);
}
+/*
+ * Test the GMM Attach procedure
+ */
+static void test_gmm_attach(void)
+{
+ struct gprs_ra_id raid = { 0, };
+ struct sgsn_mm_ctx *ctx = NULL;
+ struct sgsn_mm_ctx *ictx;
+ uint32_t foreign_tlli;
+ uint32_t local_tlli = 0;
+ struct gprs_llc_lle *lle;
+
+ /* DTAP - Attach Request */
+ /* The P-TMSI is not known by the SGSN */
+ static const unsigned char attach_req[] = {
+ 0x08, 0x01, 0x02, 0xf5, 0xe0, 0x21, 0x08, 0x02, 0x05, 0xf4,
+ 0xfb, 0xc5, 0x46, 0x79, 0x11, 0x22, 0x33, 0x40, 0x50, 0x60,
+ 0x19, 0x18, 0xb3, 0x43, 0x2b, 0x25, 0x96, 0x62, 0x00, 0x60,
+ 0x80, 0x9a, 0xc2, 0xc6, 0x62, 0x00, 0x60, 0x80, 0xba, 0xc8,
+ 0xc6, 0x62, 0x00, 0x60, 0x80, 0x00
+ };
+
+ /* DTAP - Identity Response IMEI */
+ static const unsigned char ident_resp_imei[] = {
+ 0x08, 0x16, 0x08, 0x9a, 0x78, 0x56, 0x34, 0x12, 0x90, 0x78,
+ 0x56
+ };
+
+ /* DTAP - Identity Response IMSI */
+ static const unsigned char ident_resp_imsi[] = {
+ 0x08, 0x16, 0x08, 0x19, 0x32, 0x54, 0x76, 0x98, 0x10, 0x32,
+ 0x54
+ };
+
+ /* DTAP - Attach Complete */
+ static const unsigned char attach_compl[] = {
+ 0x08, 0x03
+ };
+
+ /* DTAP - Detach Request (MO) */
+ /* normal detach, power_off = 0 */
+ static const unsigned char detach_req[] = {
+ 0x08, 0x05, 0x01, 0x18, 0x05, 0xf4, 0xeb, 0x8b,
+ 0x45, 0x67, 0x19, 0x03, 0xb9, 0x97, 0xcb
+ };
+
+ printf("Testing GMM attach\n");
+
+ /* reset the PRNG used by sgsn_alloc_ptmsi */
+ srand(1);
+
+ foreign_tlli = gprs_tmsi2tlli(0xc0000023, TLLI_FOREIGN);
+
+ /* Create a LLE/LLME */
+ OSMO_ASSERT(count(gprs_llme_list()) == 0);
+ lle = gprs_lle_get_or_create(foreign_tlli, 3);
+ OSMO_ASSERT(count(gprs_llme_list()) == 1);
+
+ /* inject the attach request */
+ send_0408_message(lle->llme, foreign_tlli,
+ attach_req, ARRAY_SIZE(attach_req));
+
+ ctx = sgsn_mm_ctx_by_tlli(foreign_tlli, &raid);
+ OSMO_ASSERT(ctx != NULL);
+ OSMO_ASSERT(ctx->mm_state == GMM_COMMON_PROC_INIT);
+
+ /* we expect an identity request (IMEI) */
+ OSMO_ASSERT(sgsn_tx_counter == 1);
+
+ /* inject the identity response (IMEI) */
+ send_0408_message(ctx->llme, foreign_tlli,
+ ident_resp_imei, ARRAY_SIZE(ident_resp_imei));
+
+ /* we expect an identity request (IMSI) */
+ OSMO_ASSERT(sgsn_tx_counter == 1);
+
+ /* inject the identity response (IMSI) */
+ send_0408_message(ctx->llme, foreign_tlli,
+ ident_resp_imsi, ARRAY_SIZE(ident_resp_imsi));
+
+ /* FIXME: We are not authorized and should get an Attach Reject, fix
+ * authorization in gprs_gmm.c */
+
+ /* check that the MM context has not been removed due to a failed
+ * authorization */
+ OSMO_ASSERT(ctx == sgsn_mm_ctx_by_tlli(foreign_tlli, &raid));
+
+ /* FIXME: If we were authorized, the state should be
+ * GMM_COMMON_PROC_INIT until the Attach Complete is received, since a
+ * P-TMSI is included, fix state handling in gprs_gmm.c */
+
+ /* OSMO_ASSERT(ctx->mm_state == GMM_COMMON_PROC_INIT); */
+
+ /* we expect an attach accept/reject */
+ OSMO_ASSERT(sgsn_tx_counter == 1);
+
+ /* this has been randomly assigned by the SGSN */
+ local_tlli = gprs_tmsi2tlli(0xeb8b4567, TLLI_LOCAL);
+
+ /* inject the attach complete */
+ send_0408_message(ctx->llme, local_tlli,
+ attach_compl, ARRAY_SIZE(attach_compl));
+
+ OSMO_ASSERT(ctx->mm_state == GMM_REGISTERED_NORMAL);
+
+ /* we don't expect a response */
+ OSMO_ASSERT(sgsn_tx_counter == 0);
+
+ /* inject the detach */
+ send_0408_message(ctx->llme, local_tlli,
+ detach_req, ARRAY_SIZE(detach_req));
+
+ /* verify that things are gone */
+ OSMO_ASSERT(count(gprs_llme_list()) == 0);
+ ictx = sgsn_mm_ctx_by_tlli(local_tlli, &raid);
+ OSMO_ASSERT(!ictx);
+}
+
static struct log_info_cat gprs_categories[] = {
[DMM] = {
.name = "DMM",
.description = "Layer3 Mobility Management (MM)",
.color = "\033[1;33m",
- .enabled = 1, .loglevel = LOGL_NOTICE,
+ .enabled = 1, .loglevel = LOGL_DEBUG,
},
[DPAG] = {
.name = "DPAG",
@@ -350,11 +468,14 @@ int main(int argc, char **argv)
tall_bsc_ctx = talloc_named_const(NULL, 0, "osmo_sgsn");
tall_msgb_ctx = talloc_named_const(tall_bsc_ctx, 0, "msgb");
+ sgsn_auth_init(sgsn);
+
test_llme();
test_gmm_detach();
test_gmm_detach_power_off();
test_gmm_detach_no_mmctx();
test_gmm_status_no_mmctx();
+ test_gmm_attach();
printf("Done\n");
return 0;
}
diff --git a/openbsc/tests/sgsn/sgsn_test.ok b/openbsc/tests/sgsn/sgsn_test.ok
index ea5b0fadd..c03bb1edb 100644
--- a/openbsc/tests/sgsn/sgsn_test.ok
+++ b/openbsc/tests/sgsn/sgsn_test.ok
@@ -3,4 +3,5 @@ Testing GMM detach
Testing GMM detach (power off)
Testing GMM detach (no MMCTX)
Testing GMM Status (no MMCTX)
+Testing GMM attach
Done