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-rw-r--r--openbsc/tests/sgsn/Makefile.am1
-rw-r--r--openbsc/tests/sgsn/sgsn_test.c87
2 files changed, 61 insertions, 27 deletions
diff --git a/openbsc/tests/sgsn/Makefile.am b/openbsc/tests/sgsn/Makefile.am
index 3c202ddf2..2782d9e1f 100644
--- a/openbsc/tests/sgsn/Makefile.am
+++ b/openbsc/tests/sgsn/Makefile.am
@@ -28,6 +28,7 @@ sgsn_test_LDADD = \
$(top_builddir)/src/gprs/gprs_utils.o \
$(top_builddir)/src/gprs/gprs_subscriber.o \
$(top_builddir)/src/gprs/gsm_04_08_gprs.o \
+ $(top_builddir)/src/gprs/gprs_gb_parse.o \
$(top_builddir)/src/libcommon/libcommon.a \
$(LIBOSMOABIS_LIBS) \
$(LIBOSMOCORE_LIBS) \
diff --git a/openbsc/tests/sgsn/sgsn_test.c b/openbsc/tests/sgsn/sgsn_test.c
index d66983040..859223f7a 100644
--- a/openbsc/tests/sgsn/sgsn_test.c
+++ b/openbsc/tests/sgsn/sgsn_test.c
@@ -27,6 +27,7 @@
#include <openbsc/gprs_gsup_messages.h>
#include <openbsc/gprs_gsup_client.h>
#include <openbsc/gprs_utils.h>
+#include <openbsc/gprs_gb_parse.h>
#include <osmocom/gprs/gprs_bssgp.h>
@@ -51,17 +52,53 @@ static struct sgsn_instance sgsn_inst = {
};
struct sgsn_instance *sgsn = &sgsn_inst;
unsigned sgsn_tx_counter = 0;
+struct msgb *last_msg = NULL;
+struct gprs_gb_parse_context last_dl_parse_ctx;
+
+static void reset_last_msg()
+{
+ if (last_msg)
+ msgb_free(last_msg);
+
+ last_msg = NULL;
+ memset(&last_dl_parse_ctx, 0, sizeof(last_dl_parse_ctx));
+}
static void cleanup_test()
{
+ reset_last_msg();
+}
+
+static uint32_t get_new_ptmsi(const struct gprs_gb_parse_context *parse_ctx)
+{
+ uint32_t new_ptmsi = GSM_RESERVED_TMSI;
+
+ if (parse_ctx->new_ptmsi_enc)
+ gprs_parse_tmsi(parse_ctx->new_ptmsi_enc, &new_ptmsi);
+
+ return new_ptmsi;
}
/* override */
int bssgp_tx_dl_ud(struct msgb *msg, uint16_t pdu_lifetime,
struct bssgp_dl_ud_par *dup)
{
+ int rc;
+
+ reset_last_msg();
+
+ last_msg = msg;
+ OSMO_ASSERT(msgb_data(last_msg) != NULL);
+
+ rc = gprs_gb_parse_llc(msgb_data(last_msg), msgb_length(last_msg),
+ &last_dl_parse_ctx);
+
+ fprintf(stderr, "Got DL LLC message: %s\n",
+ gprs_gb_message_name(&last_dl_parse_ctx, "UNKNOWN"));
+
+ OSMO_ASSERT(rc > 0);
+
sgsn_tx_counter += 1;
- msgb_free(msg);
return 0;
}
@@ -153,6 +190,7 @@ static void send_0408_message(struct gprs_llc_llme *llme, uint32_t tlli,
{
struct msgb *msg;
+ reset_last_msg();
sgsn_tx_counter = 0;
msg = create_msg(data, data_len);
@@ -911,16 +949,6 @@ static void test_gmm_attach(int retry)
printf("Testing GMM attach%s\n", retry ? " with retry" : "");
- /* reset the PRNG used by sgsn_alloc_ptmsi */
- srand(1);
-
- ptmsi1 = sgsn_alloc_ptmsi();
- OSMO_ASSERT(ptmsi1 != GSM_RESERVED_TMSI);
-
- /* reset the PRNG, so that the same P-TMSI sequence will be generated
- * again */
- srand(1);
-
foreign_tlli = gprs_tmsi2tlli(0xc0000023, TLLI_FOREIGN);
/* Create a LLE/LLME */
@@ -984,6 +1012,8 @@ retry_attach_req:
/* we expect an attach accept/reject */
OSMO_ASSERT(sgsn_tx_counter == 1);
+ ptmsi1 = get_new_ptmsi(&last_dl_parse_ctx);
+ OSMO_ASSERT(ptmsi1 != GSM_RESERVED_TMSI);
/* this has been randomly assigned by the SGSN */
local_tlli = gprs_tmsi2tlli(ptmsi1, TLLI_LOCAL);
@@ -1507,16 +1537,6 @@ static void test_gmm_cancel(void)
sgsn_inst.cfg.auth_policy = SGSN_AUTH_POLICY_OPEN;
- /* reset the PRNG used by sgsn_alloc_ptmsi */
- srand(1);
-
- ptmsi1 = sgsn_alloc_ptmsi();
- OSMO_ASSERT(ptmsi1 != GSM_RESERVED_TMSI);
-
- /* reset the PRNG, so that the same P-TMSI sequence will be generated
- * again */
- srand(1);
-
foreign_tlli = gprs_tmsi2tlli(0xc0000023, TLLI_FOREIGN);
/* Create a LLE/LLME */
@@ -1554,6 +1574,8 @@ static void test_gmm_cancel(void)
/* we expect an attach accept/reject */
OSMO_ASSERT(sgsn_tx_counter == 1);
+ ptmsi1 = get_new_ptmsi(&last_dl_parse_ctx);
+ OSMO_ASSERT(ptmsi1 != GSM_RESERVED_TMSI);
/* this has been randomly assigned by the SGSN */
local_tlli = gprs_tmsi2tlli(ptmsi1, TLLI_LOCAL);
@@ -1591,6 +1613,7 @@ static void test_gmm_ptmsi_allocation(void)
uint32_t foreign_tlli;
uint32_t ptmsi1;
uint32_t ptmsi2;
+ uint32_t received_ptmsi;
uint32_t old_ptmsi;
uint32_t local_tlli = 0;
struct gprs_llc_lle *lle;
@@ -1658,11 +1681,9 @@ static void test_gmm_ptmsi_allocation(void)
OSMO_ASSERT(ptmsi1 != ptmsi2);
- printf(" - Repeated Attach Request\n");
+ ptmsi1 = ptmsi2 = GSM_RESERVED_TMSI;
- /* reset the PRNG, so that the same P-TMSI will be generated
- * again */
- srand(1);
+ printf(" - Repeated Attach Request\n");
foreign_tlli = gprs_tmsi2tlli(0xc0000023, TLLI_FOREIGN);
@@ -1678,7 +1699,8 @@ static void test_gmm_ptmsi_allocation(void)
ctx = sgsn_mm_ctx_by_tlli(foreign_tlli, &raid);
OSMO_ASSERT(ctx != NULL);
OSMO_ASSERT(ctx->mm_state == GMM_COMMON_PROC_INIT);
- OSMO_ASSERT(ctx->p_tmsi == ptmsi1);
+ OSMO_ASSERT(ctx->p_tmsi != GSM_RESERVED_TMSI);
+ ptmsi1 = ctx->p_tmsi;
old_ptmsi = ctx->p_tmsi_old;
@@ -1698,6 +1720,8 @@ static void test_gmm_ptmsi_allocation(void)
/* we expect an attach accept */
OSMO_ASSERT(sgsn_tx_counter == 1);
+ received_ptmsi = get_new_ptmsi(&last_dl_parse_ctx);
+ OSMO_ASSERT(received_ptmsi == ptmsi1);
/* we ignore this and send the attach again */
send_0408_message(lle->llme, foreign_tlli,
@@ -1710,6 +1734,11 @@ static void test_gmm_ptmsi_allocation(void)
OSMO_ASSERT(ctx->p_tmsi_old == old_ptmsi);
OSMO_ASSERT(ctx->p_tmsi == ptmsi1);
+ /* we expect an attach accept */
+ OSMO_ASSERT(sgsn_tx_counter == 1);
+ received_ptmsi = get_new_ptmsi(&last_dl_parse_ctx);
+ OSMO_ASSERT(received_ptmsi == ptmsi1);
+
/* inject the attach complete */
local_tlli = gprs_tmsi2tlli(ptmsi1, TLLI_LOCAL);
send_0408_message(ctx->llme, local_tlli,
@@ -1733,7 +1762,9 @@ static void test_gmm_ptmsi_allocation(void)
OSMO_ASSERT(ctx->mm_state == GMM_COMMON_PROC_INIT);
OSMO_ASSERT(ctx->p_tmsi_old == ptmsi1);
- OSMO_ASSERT(ctx->p_tmsi == ptmsi2);
+ OSMO_ASSERT(ctx->p_tmsi != GSM_RESERVED_TMSI);
+ OSMO_ASSERT(ctx->p_tmsi != ptmsi1);
+ ptmsi2 = ctx->p_tmsi;
/* repeat the RA update request */
send_0408_message(ctx->llme, local_tlli,
@@ -1741,6 +1772,8 @@ static void test_gmm_ptmsi_allocation(void)
/* we expect an RA update accept */
OSMO_ASSERT(sgsn_tx_counter == 1);
+ received_ptmsi = get_new_ptmsi(&last_dl_parse_ctx);
+ OSMO_ASSERT(received_ptmsi == ptmsi2);
OSMO_ASSERT(ctx->mm_state == GMM_COMMON_PROC_INIT);
OSMO_ASSERT(ctx->p_tmsi_old == ptmsi1);
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-26 22:55:17 +0000