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rollback state machine

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This commit is contained in:
Sukchan Lee
2018-01-20 04:29:58 +09:00
parent 907c3f2f3c
commit 862571c8ed
2 changed files with 103 additions and 39 deletions
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136
src/mme/emm_sm.c
View File

@@ -84,17 +84,22 @@ void emm_state_detached(fsm_t *s, event_t *e)
}
else
{
d_error("No Security Context");
nas_send_service_reject(mme_ue, EMM_CAUSE_MAC_FAILURE);
FSM_TRAN(s, &emm_state_exception);
if (MME_HAVE_SGW_S11_PATH(mme_ue))
{
mme_s6a_send_air(mme_ue, NULL);
FSM_TRAN(&mme_ue->sm, &emm_state_authentication);
}
else
{
d_error("No Session");
nas_send_service_reject(mme_ue, EMM_CAUSE_UE_IDENTITY_CANNOT_BE_DERIVED_BY_THE_NETWORK);
FSM_TRAN(s, &emm_state_exception);
}
}
}
else
{
d_warn("Unknown UE");
nas_send_service_reject(mme_ue,
EMM_CAUSE_UE_IDENTITY_CANNOT_BE_DERIVED_BY_THE_NETWORK);
FSM_TRAN(s, emm_state_exception);
FSM_TRAN(&mme_ue->sm, &emm_state_identity);
}
break;
}
@@ -167,19 +172,23 @@ void emm_state_detached(fsm_t *s, event_t *e)
}
else
{
/* Send TAU reject */
d_error("No Security Context");
nas_send_tau_reject(mme_ue, EMM_CAUSE_MAC_FAILURE);
FSM_TRAN(s, emm_state_exception);
if (MME_HAVE_SGW_S11_PATH(mme_ue))
{
mme_s6a_send_air(mme_ue, NULL);
FSM_TRAN(&mme_ue->sm, &emm_state_authentication);
}
else
{
/* Send TAU reject */
d_error("No Session");
nas_send_tau_reject(mme_ue, EMM_CAUSE_UE_IDENTITY_CANNOT_BE_DERIVED_BY_THE_NETWORK);
FSM_TRAN(s, emm_state_exception);
}
}
}
else
{
/* Send TAU reject */
d_error("Unknown UE");
nas_send_tau_reject(mme_ue,
EMM_CAUSE_UE_IDENTITY_CANNOT_BE_DERIVED_BY_THE_NETWORK);
FSM_TRAN(s, emm_state_exception);
FSM_TRAN(&mme_ue->sm, &emm_state_identity);
}
break;
}
@@ -264,12 +273,54 @@ void emm_state_identity(fsm_t *s, event_t *e)
}
}
else if (mme_ue->nas_eps.type ==
MME_EPS_TYPE_SERVICE_REQUEST ||
mme_ue->nas_eps.type == MME_EPS_TYPE_TAU_REQUEST)
MME_EPS_TYPE_SERVICE_REQUEST)
{
d_assert(0,,
"Invalid EPS Type : %d", mme_ue->nas_eps.type);
FSM_TRAN(s, &emm_state_exception);
if (SECURITY_CONTEXT_IS_VALID(mme_ue))
{
rv = s1ap_send_initial_context_setup_request(
mme_ue);
d_assert(rv == CORE_OK,, "s1ap send error");
FSM_TRAN(&mme_ue->sm, &emm_state_attached);
}
else
{
if (MME_HAVE_SGW_S11_PATH(mme_ue))
{
mme_s6a_send_air(mme_ue, NULL);
FSM_TRAN(&mme_ue->sm, &emm_state_authentication);
}
else
{
d_error("No Session");
nas_send_service_reject(mme_ue, EMM_CAUSE_UE_IDENTITY_CANNOT_BE_DERIVED_BY_THE_NETWORK);
FSM_TRAN(s, &emm_state_exception);
}
}
}
else if (mme_ue->nas_eps.type == MME_EPS_TYPE_TAU_REQUEST)
{
if (SECURITY_CONTEXT_IS_VALID(mme_ue))
{
/* Send TAU Accept */
rv = nas_send_tau_accept(mme_ue);
d_assert(rv == CORE_OK,, "send send failed");
FSM_TRAN(&mme_ue->sm, &emm_state_detached);
}
else
{
if (MME_HAVE_SGW_S11_PATH(mme_ue))
{
mme_s6a_send_air(mme_ue, NULL);
FSM_TRAN(&mme_ue->sm, &emm_state_authentication);
}
else
{
/* Send TAU reject */
d_error("No Session");
nas_send_tau_reject(mme_ue, EMM_CAUSE_UE_IDENTITY_CANNOT_BE_DERIVED_BY_THE_NETWORK);
FSM_TRAN(s, emm_state_exception);
}
}
}
break;
}
@@ -617,7 +668,7 @@ void emm_state_attached(fsm_t *s, event_t *e)
if (rv != CORE_OK)
{
d_error("emm_handle_service_request() failed "
"in emm_state_attached");
"in emm_state_detached");
FSM_TRAN(s, emm_state_exception);
break;
}
@@ -631,17 +682,22 @@ void emm_state_attached(fsm_t *s, event_t *e)
}
else
{
d_error("No Secuity Context");
nas_send_service_reject(mme_ue, EMM_CAUSE_MAC_FAILURE);
FSM_TRAN(&mme_ue->sm, &emm_state_exception);
if (MME_HAVE_SGW_S11_PATH(mme_ue))
{
mme_s6a_send_air(mme_ue, NULL);
FSM_TRAN(&mme_ue->sm, &emm_state_authentication);
}
else
{
d_error("No Session");
nas_send_service_reject(mme_ue, EMM_CAUSE_UE_IDENTITY_CANNOT_BE_DERIVED_BY_THE_NETWORK);
FSM_TRAN(s, &emm_state_exception);
}
}
}
else
{
d_error("Unknown UE");
nas_send_service_reject(mme_ue,
EMM_CAUSE_UE_IDENTITY_CANNOT_BE_DERIVED_BY_THE_NETWORK);
FSM_TRAN(s, emm_state_exception);
FSM_TRAN(&mme_ue->sm, &emm_state_identity);
}
break;
}
@@ -728,19 +784,23 @@ void emm_state_attached(fsm_t *s, event_t *e)
}
else
{
/* Send TAU reject */
d_error("No Security Context");
nas_send_tau_reject(mme_ue, EMM_CAUSE_MAC_FAILURE);
FSM_TRAN(s, emm_state_exception);
if (MME_HAVE_SGW_S11_PATH(mme_ue))
{
mme_s6a_send_air(mme_ue, NULL);
FSM_TRAN(&mme_ue->sm, &emm_state_authentication);
}
else
{
/* Send TAU reject */
d_error("No Session");
nas_send_tau_reject(mme_ue, EMM_CAUSE_UE_IDENTITY_CANNOT_BE_DERIVED_BY_THE_NETWORK);
FSM_TRAN(s, emm_state_exception);
}
}
}
else
{
/* Send TAU reject */
d_error("Unknown UE");
nas_send_tau_reject(mme_ue,
EMM_CAUSE_UE_IDENTITY_CANNOT_BE_DERIVED_BY_THE_NETWORK);
FSM_TRAN(s, emm_state_exception);
FSM_TRAN(&mme_ue->sm, &emm_state_identity);
}
break;
}

6
test/attach_test.c
View File

@@ -1338,8 +1338,9 @@ static void attach_test5(abts_case *tc, void *data)
core_sleep(time_from_msec(300));
mme_self()->mme_ue_s1ap_id = 0;
mme_self()->mme_ue_s1ap_id = 1;
#if 0
/* Send Service request */
rv = tests1ap_build_service_request(&sendbuf, msgindex);
ABTS_INT_EQUAL(tc, CORE_OK, rv);
@@ -1363,6 +1364,7 @@ static void attach_test5(abts_case *tc, void *data)
ABTS_INT_EQUAL(tc, CORE_OK, rv);
rv = tests1ap_enb_send(sock, sendbuf);
ABTS_INT_EQUAL(tc, CORE_OK, rv);
#endif
/***********************************************************************
* Attach Request : Known IMSI, Integrity Protected, No Security Context
@@ -1455,6 +1457,7 @@ static void attach_test5(abts_case *tc, void *data)
ABTS_INT_EQUAL(tc, CORE_OK, rv);
pkbuf_free(recvbuf);
#if 0
/* Receive UE Context Release Command */
recvbuf = pkbuf_alloc(0, MAX_SDU_LEN);
rv = tests1ap_enb_read(sock, recvbuf);
@@ -1484,6 +1487,7 @@ static void attach_test5(abts_case *tc, void *data)
rv = tests1ap_enb_read(sock, recvbuf);
ABTS_INT_EQUAL(tc, CORE_OK, rv);
pkbuf_free(recvbuf);
#endif
core_sleep(time_from_msec(300));