tests/iuup: Showcase IuUP stack not answering subsequent Init msgs
This test shows a bug in IuUP stack which makes it only handle the first
Initialization IuUP message. After it moves to SMpSDU, it stops handling
Initialization messages.
A fix is provided in a follow up patch.
Related: SYS#5995
Change-Id: I72c2c2d88f158f3ef35724fcb73854a1827aaab4
diff --git a/tests/iuup/iuup_test.c b/tests/iuup/iuup_test.c
index 3c06fd3..5b55350 100644
--- a/tests/iuup/iuup_test.c
+++ b/tests/iuup/iuup_test.c
@@ -528,6 +528,112 @@
osmo_iuup_instance_free(iui);
}
+/****************************
+ * test_passive_init_retrans
+ ****************************/
+static unsigned int _passive_init_retrans_user_rx_prim = 0;
+static int _passive_init_retrans_user_prim_cb(struct osmo_prim_hdr *oph, void *ctx)
+{
+ struct osmo_iuup_rnl_prim *irp = (struct osmo_iuup_rnl_prim *)oph;
+ struct msgb *msg = oph->msg;
+
+ printf("%s()\n", __func__);
+
+ switch (_passive_init_retrans_user_rx_prim) {
+ case 0:
+ /* FIXME expected case: case 1: */
+ OSMO_ASSERT(OSMO_PRIM_HDR(&irp->oph) == OSMO_PRIM(OSMO_IUUP_RNL_STATUS, PRIM_OP_INDICATION));
+ OSMO_ASSERT(irp->u.status.procedure == IUUP_PROC_INIT);
+ break;
+ /* FIXME current case: */
+ case 1:
+ case 2:
+ default:
+ OSMO_ASSERT(OSMO_PRIM_HDR(&irp->oph) == OSMO_PRIM(OSMO_IUUP_RNL_DATA, PRIM_OP_INDICATION));
+ printf("User: UL len=%u: %s\n", msgb_l3len(msg),
+ osmo_hexdump((const unsigned char *) msgb_l3(msg), msgb_l3len(msg)));
+ }
+
+ _passive_init_retrans_user_rx_prim++;
+ msgb_free(oph->msg);
+ return 0;
+}
+void test_passive_init_retrans(void)
+{
+ /* Here we check the passive INIT code path, aka receiving INIT and
+ * returning INIT_ACK/NACK. We emulate the peer not receiving the INIT
+ * ACK and hence retransmitting the INIT. The IuUP stack should then
+ * push the new INIT info up the stack and ACK it. */
+ struct osmo_iuup_instance *iui;
+ struct osmo_iuup_rnl_prim *rnp;
+ struct osmo_iuup_tnl_prim *tnp;
+ struct iuup_pdutype14_hdr *hdr14;
+ struct iuup_pdutype0_hdr *hdr0;
+ int rc;
+
+ /* reset global var, we reuse it together wth callback from test_passive_init(): */
+ _passive_init_transport_rx_prim = 0;
+
+ iui = osmo_iuup_instance_alloc(iuup_test_ctx, __func__);
+ OSMO_ASSERT(iui);
+ osmo_iuup_instance_set_user_prim_cb(iui, _passive_init_retrans_user_prim_cb, NULL);
+ osmo_iuup_instance_set_transport_prim_cb(iui, _passive_init_transport_prim_cb, NULL);
+
+ clock_override_set(0, 0);
+
+ /* Tx CONFIG.req */
+ rnp = osmo_iuup_rnl_prim_alloc(iuup_test_ctx, OSMO_IUUP_RNL_CONFIG, PRIM_OP_REQUEST, IUUP_MSGB_SIZE);
+ rnp->u.config = def_configure_req;
+ rnp->u.config.active = false;
+ OSMO_ASSERT((rc = osmo_iuup_rnl_prim_down(iui, rnp)) == 0);
+ /* STATUS-INIT.req is NOT transmitted automatically: */
+ OSMO_ASSERT(_passive_init_transport_rx_prim == 0);
+
+ /* Send Init: */
+ tnp = osmo_iuup_tnl_prim_alloc(iuup_test_ctx, OSMO_IUUP_TNL_UNITDATA, PRIM_OP_INDICATION, IUUP_MSGB_SIZE);
+ tnp->oph.msg->l2h = msgb_put(tnp->oph.msg, sizeof(iuup_initialization));
+ hdr14 = (struct iuup_pdutype14_hdr *)msgb_l2(tnp->oph.msg);
+ memcpy(hdr14, iuup_initialization, sizeof(iuup_initialization));
+ OSMO_ASSERT((rc = osmo_iuup_tnl_prim_up(iui, tnp)) == 0);
+ OSMO_ASSERT(_passive_init_transport_rx_prim == 1); /* We receive an Init ACK */
+ OSMO_ASSERT(_passive_init_retrans_user_rx_prim == 1); /* We receive the Status-Init.ind */
+
+ /* Send Init (retrans): */
+ tnp = osmo_iuup_tnl_prim_alloc(iuup_test_ctx, OSMO_IUUP_TNL_UNITDATA, PRIM_OP_INDICATION, IUUP_MSGB_SIZE);
+ tnp->oph.msg->l2h = msgb_put(tnp->oph.msg, sizeof(iuup_initialization));
+ hdr14 = (struct iuup_pdutype14_hdr *)msgb_l2(tnp->oph.msg);
+ memcpy(hdr14, iuup_initialization, sizeof(iuup_initialization));
+ /* FIXME: unexpected result, should be fixed: */
+ OSMO_ASSERT((rc = osmo_iuup_tnl_prim_up(iui, tnp)) < 0); /* INIT not perrmited */
+ OSMO_ASSERT(_passive_init_transport_rx_prim == 1); /* We receive an Init ACK */
+ OSMO_ASSERT(_passive_init_retrans_user_rx_prim == 1); /* We receive the Status-Init.ind */
+ /* FIXME: expected result: */
+ //OSMO_ASSERT((rc = osmo_iuup_tnl_prim_up(iui, tnp)) == 0);
+ //OSMO_ASSERT(_passive_init_transport_rx_prim == 2); /* We receive another Init ACK */
+ //OSMO_ASSERT(_passive_init_retrans_user_rx_prim == 2); /* We receive another Status-Init.ind */
+
+ /* Send IuUP incoming data to the implementation: */
+ tnp = osmo_iuup_tnl_prim_alloc(iuup_test_ctx, OSMO_IUUP_TNL_UNITDATA, PRIM_OP_INDICATION, IUUP_MSGB_SIZE);
+ tnp->oph.msg->l2h = msgb_put(tnp->oph.msg, sizeof(iuup_data));
+ hdr0 = (struct iuup_pdutype0_hdr *)msgb_l2(tnp->oph.msg);
+ memcpy(hdr0, iuup_data, sizeof(iuup_data));
+ OSMO_ASSERT((rc = osmo_iuup_tnl_prim_up(iui, tnp)) == 0);
+ /* We receive it in RNL: */
+ OSMO_ASSERT(_passive_init_retrans_user_rx_prim == 2);
+
+ /* Now in opposite direction, RNL->[IuuP]->TNL: */
+ rnp = osmo_iuup_rnl_prim_alloc(iuup_test_ctx, OSMO_IUUP_RNL_DATA, PRIM_OP_REQUEST, IUUP_MSGB_SIZE);
+ rnp->u.data.rfci = 0;
+ rnp->u.data.frame_nr = 1;
+ rnp->u.data.fqc = IUUP_FQC_FRAME_GOOD;
+ rnp->oph.msg->l3h = msgb_put(rnp->oph.msg, sizeof(iuup_data) - 4);
+ memcpy(rnp->oph.msg->l3h, iuup_data + 4, sizeof(iuup_data) - 4);
+ OSMO_ASSERT((rc = osmo_iuup_rnl_prim_down(iui, rnp)) == 0);
+ OSMO_ASSERT(_passive_init_transport_rx_prim == 2); /* We receive data in TNL */
+
+ osmo_iuup_instance_free(iui);
+}
+
static int _decode_passive_init_2_rfci_no_iptis_user_prim_cb(struct osmo_prim_hdr *oph, void *ctx)
{
struct osmo_iuup_rnl_prim *irp = (struct osmo_iuup_rnl_prim *)oph;
@@ -658,6 +764,7 @@
test_init_nack_retrans();
test_init_ack();
test_passive_init();
+ test_passive_init_retrans();
test_decode_passive_init_2_rfci_no_iptis();
printf("OK.\n");
diff --git a/tests/iuup/iuup_test.ok b/tests/iuup/iuup_test.ok
index a2f48ec..93f6954 100644
--- a/tests/iuup/iuup_test.ok
+++ b/tests/iuup/iuup_test.ok
@@ -44,6 +44,14 @@
_passive_init_transport_prim_cb()
Transport: DL len=35: 01 00 e3 ff 08 55 6d 94 4c 71 a1 a0 81 e7 ea d2 04 24 44 80 00 0e cd 82 b8 11 18 00 00 97 c4 79 4e 77 40
sys={0.000000}, clock_override_set
+_passive_init_retrans_user_prim_cb()
+_passive_init_transport_prim_cb()
+Transport: DL len=4: e4 00 24 00
+_passive_init_retrans_user_prim_cb()
+User: UL len=31: 08 55 6d 94 4c 71 a1 a0 81 e7 ea d2 04 24 44 80 00 0e cd 82 b8 11 18 00 00 97 c4 79 4e 77 40
+_passive_init_transport_prim_cb()
+Transport: DL len=35: 01 00 e3 ff 08 55 6d 94 4c 71 a1 a0 81 e7 ea d2 04 24 44 80 00 0e cd 82 b8 11 18 00 00 97 c4 79 4e 77 40
+sys={0.000000}, clock_override_set
_decode_passive_init_2_rfci_no_iptis_user_prim_cb(): Initialization decoded fine!
_decode_passive_init_2_rfci_no_iptis_transport_prim_cb()
Transport: DL len=4: e4 00 24 00