forked from acouzens/open5gs
385 lines
11 KiB
C
385 lines
11 KiB
C
#define TRACE_MODULE _esm_sm
|
|
|
|
#include "core_debug.h"
|
|
|
|
#include "nas/nas_message.h"
|
|
|
|
#include "mme_event.h"
|
|
#include "mme_sm.h"
|
|
#include "mme_fd_path.h"
|
|
#include "emm_handler.h"
|
|
#include "esm_build.h"
|
|
#include "esm_handler.h"
|
|
#include "mme_s11_handler.h"
|
|
#include "nas_path.h"
|
|
#include "mme_gtp_path.h"
|
|
|
|
void esm_state_initial(fsm_t *s, event_t *e)
|
|
{
|
|
d_assert(s, return, "Null param");
|
|
|
|
mme_sm_trace(3, e);
|
|
|
|
FSM_TRAN(s, &esm_state_inactive);
|
|
}
|
|
|
|
void esm_state_final(fsm_t *s, event_t *e)
|
|
{
|
|
d_assert(s, return, "Null param");
|
|
|
|
mme_sm_trace(3, e);
|
|
}
|
|
|
|
void esm_state_inactive(fsm_t *s, event_t *e)
|
|
{
|
|
status_t rv;
|
|
mme_ue_t *mme_ue = NULL;
|
|
mme_sess_t *sess = NULL;
|
|
mme_bearer_t *bearer = NULL;
|
|
|
|
d_assert(s, return, "Null param");
|
|
d_assert(e, return, "Null param");
|
|
|
|
mme_sm_trace(3, e);
|
|
|
|
bearer = mme_bearer_find(event_get_param1(e));
|
|
d_assert(bearer, return, "Null param");
|
|
sess = bearer->sess;
|
|
d_assert(sess, return, "Null param");
|
|
mme_ue = sess->mme_ue;
|
|
d_assert(mme_ue, return, "Null param");
|
|
|
|
switch (event_get(e))
|
|
{
|
|
case FSM_ENTRY_SIG:
|
|
{
|
|
break;
|
|
}
|
|
case FSM_EXIT_SIG:
|
|
{
|
|
break;
|
|
}
|
|
case MME_EVT_ESM_MESSAGE:
|
|
{
|
|
nas_message_t *message = (nas_message_t *)event_get_param3(e);
|
|
d_assert(message, break, "Null param");
|
|
|
|
switch(message->esm.h.message_type)
|
|
{
|
|
case NAS_PDN_CONNECTIVITY_REQUEST:
|
|
{
|
|
d_trace(3, "[ESM] PDN Connectivity request\n");
|
|
d_trace(3, " IMSI[%s] PTI[%d] EBI[%d]\n",
|
|
mme_ue->imsi_bcd, sess->pti, bearer->ebi);
|
|
rv = esm_handle_pdn_connectivity_request(
|
|
bearer, &message->esm.pdn_connectivity_request);
|
|
if (rv != CORE_OK)
|
|
{
|
|
FSM_TRAN(s, esm_state_exception);
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
case NAS_ESM_INFORMATION_RESPONSE:
|
|
{
|
|
d_trace(3, "[ESM] ESM information response\n");
|
|
d_trace(3, " IMSI[%s] PTI[%d] EBI[%d]\n",
|
|
mme_ue->imsi_bcd, sess->pti, bearer->ebi);
|
|
rv = esm_handle_information_response(
|
|
sess, &message->esm.esm_information_response);
|
|
if (rv != CORE_OK)
|
|
{
|
|
FSM_TRAN(s, esm_state_exception);
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
case NAS_ACTIVATE_DEFAULT_EPS_BEARER_CONTEXT_ACCEPT:
|
|
{
|
|
d_trace(3, "[ESM] Activate default EPS bearer "
|
|
"context accept\n");
|
|
d_trace(3, " IMSI[%s] PTI[%d] EBI[%d]\n",
|
|
mme_ue->imsi_bcd, sess->pti, bearer->ebi);
|
|
if (MME_HAVE_ENB_S1U_PATH(bearer))
|
|
{
|
|
rv = mme_gtp_send_modify_bearer_request(bearer, 0);
|
|
d_assert(rv == CORE_OK, return, "gtp send failed");
|
|
}
|
|
|
|
esm_handle_activate_default_bearer_accept(bearer);
|
|
FSM_TRAN(s, esm_state_active);
|
|
break;
|
|
}
|
|
case NAS_ACTIVATE_DEDICATED_EPS_BEARER_CONTEXT_ACCEPT:
|
|
{
|
|
d_trace(3, "[ESM] Activate dedicated EPS bearer "
|
|
"context accept\n");
|
|
d_trace(3, " IMSI[%s] PTI[%d] EBI[%d]\n",
|
|
mme_ue->imsi_bcd, sess->pti, bearer->ebi);
|
|
|
|
if (MME_HAVE_ENB_S1U_PATH(bearer))
|
|
{
|
|
rv = mme_gtp_send_create_bearer_response(bearer);
|
|
d_assert(rv == CORE_OK, return, "gtp send failed");
|
|
}
|
|
|
|
FSM_TRAN(s, esm_state_active);
|
|
break;
|
|
}
|
|
default:
|
|
{
|
|
d_error("Unknown message(type:%d)",
|
|
message->esm.h.message_type);
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
|
|
default:
|
|
{
|
|
d_error("Unknown event %s", mme_event_get_name(e));
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
void esm_state_active(fsm_t *s, event_t *e)
|
|
{
|
|
status_t rv;
|
|
mme_ue_t *mme_ue = NULL;
|
|
mme_sess_t *sess = NULL;
|
|
mme_bearer_t *bearer = NULL;
|
|
|
|
d_assert(s, return, "Null param");
|
|
d_assert(e, return, "Null param");
|
|
|
|
mme_sm_trace(3, e);
|
|
|
|
bearer = mme_bearer_find(event_get_param1(e));
|
|
d_assert(bearer, return, "Null param");
|
|
sess = bearer->sess;
|
|
d_assert(sess, return, "Null param");
|
|
mme_ue = sess->mme_ue;
|
|
d_assert(mme_ue, return, "Null param");
|
|
|
|
switch (event_get(e))
|
|
{
|
|
case FSM_ENTRY_SIG:
|
|
{
|
|
break;
|
|
}
|
|
case FSM_EXIT_SIG:
|
|
{
|
|
break;
|
|
}
|
|
case MME_EVT_ESM_MESSAGE:
|
|
{
|
|
nas_message_t *message = (nas_message_t *)event_get_param3(e);
|
|
d_assert(message, break, "Null param");
|
|
|
|
switch(message->esm.h.message_type)
|
|
{
|
|
case NAS_PDN_CONNECTIVITY_REQUEST:
|
|
{
|
|
d_trace(3, "[ESM] PDN Connectivity request\n");
|
|
d_trace(3, " IMSI[%s] PTI[%d] EBI[%d]\n",
|
|
mme_ue->imsi_bcd, sess->pti, bearer->ebi);
|
|
rv = esm_handle_pdn_connectivity_request(
|
|
bearer, &message->esm.pdn_connectivity_request);
|
|
if (rv != CORE_OK)
|
|
{
|
|
FSM_TRAN(s, esm_state_exception);
|
|
break;
|
|
}
|
|
|
|
FSM_TRAN(s, esm_state_inactive);
|
|
break;
|
|
}
|
|
case NAS_PDN_DISCONNECT_REQUEST:
|
|
{
|
|
d_trace(3, "[NAS] PDN disconnect request : "
|
|
"UE[%s] --> ESM[EBI:%d]\n",
|
|
mme_ue->imsi_bcd, bearer->ebi);
|
|
if (MME_HAVE_SGW_S1U_PATH(sess))
|
|
{
|
|
rv = mme_gtp_send_delete_session_request(sess);
|
|
d_assert(rv == CORE_OK, return,
|
|
"mme_gtp_send_delete_session_request error");
|
|
}
|
|
else
|
|
{
|
|
rv = nas_send_deactivate_bearer_context_request(bearer);
|
|
d_assert(rv == CORE_OK, return,
|
|
"nas_send_deactivate_bearer_context_request failed");
|
|
}
|
|
FSM_TRAN(s, esm_state_pdn_will_disconnect);
|
|
break;
|
|
}
|
|
case NAS_MODIFY_EPS_BEARER_CONTEXT_ACCEPT:
|
|
{
|
|
d_trace(3, "[NAS] Modify EPS bearer context accept : "
|
|
"UE[%s] --> ESM[EBI:%d] in ACTIVE state\n",
|
|
mme_ue->imsi_bcd, bearer->ebi);
|
|
|
|
rv = mme_gtp_send_update_bearer_response(bearer);
|
|
d_assert(rv == CORE_OK, return,
|
|
"mme_gtp_send_update_session_request error");
|
|
break;
|
|
}
|
|
case NAS_DEACTIVATE_EPS_BEARER_CONTEXT_ACCEPT:
|
|
{
|
|
d_trace(3, "[NAS] Deactivate EPS bearer context accept : "
|
|
"UE[%s] --> ESM[EBI:%d] in ACTIVE state\n",
|
|
mme_ue->imsi_bcd, bearer->ebi);
|
|
rv = mme_gtp_send_delete_bearer_response(bearer);
|
|
d_assert(rv == CORE_OK, return,
|
|
"mme_gtp_send_delete_session_request error");
|
|
FSM_TRAN(s, esm_state_bearer_deactivated);
|
|
break;
|
|
}
|
|
default:
|
|
{
|
|
d_error("Unknown message(type:%d)",
|
|
message->esm.h.message_type);
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
|
|
default:
|
|
{
|
|
d_error("Unknown event %s", mme_event_get_name(e));
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
void esm_state_pdn_will_disconnect(fsm_t *s, event_t *e)
|
|
{
|
|
mme_ue_t *mme_ue = NULL;
|
|
mme_sess_t *sess = NULL;
|
|
mme_bearer_t *bearer = NULL;
|
|
|
|
d_assert(s, return, "Null param");
|
|
d_assert(e, return, "Null param");
|
|
|
|
mme_sm_trace(3, e);
|
|
|
|
bearer = mme_bearer_find(event_get_param1(e));
|
|
d_assert(bearer, return, "Null param");
|
|
sess = bearer->sess;
|
|
d_assert(sess, return, "Null param");
|
|
mme_ue = sess->mme_ue;
|
|
d_assert(mme_ue, return, "Null param");
|
|
|
|
switch (event_get(e))
|
|
{
|
|
case FSM_ENTRY_SIG:
|
|
{
|
|
break;
|
|
}
|
|
case FSM_EXIT_SIG:
|
|
{
|
|
break;
|
|
}
|
|
case MME_EVT_ESM_MESSAGE:
|
|
{
|
|
nas_message_t *message = (nas_message_t *)event_get_param3(e);
|
|
d_assert(message, break, "Null param");
|
|
|
|
switch(message->esm.h.message_type)
|
|
{
|
|
case NAS_DEACTIVATE_EPS_BEARER_CONTEXT_ACCEPT:
|
|
{
|
|
d_trace(3, "[NAS] Deactivate EPS bearer context accept : "
|
|
"UE[%s] --> ESM[EBI:%d] in PDN WILL DISCONNECT state\n",
|
|
mme_ue->imsi_bcd, bearer->ebi);
|
|
FSM_TRAN(s, esm_state_pdn_did_disconnect);
|
|
break;
|
|
}
|
|
default:
|
|
{
|
|
d_error("Unknown message(type:%d)",
|
|
message->esm.h.message_type);
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
|
|
default:
|
|
{
|
|
d_error("Unknown event %s", mme_event_get_name(e));
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
void esm_state_pdn_did_disconnect(fsm_t *s, event_t *e)
|
|
{
|
|
mme_sm_trace(3, e);
|
|
|
|
switch (event_get(e))
|
|
{
|
|
case FSM_ENTRY_SIG:
|
|
{
|
|
break;
|
|
}
|
|
case FSM_EXIT_SIG:
|
|
{
|
|
break;
|
|
}
|
|
default:
|
|
{
|
|
d_error("Unknown event %s", mme_event_get_name(e));
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
void esm_state_bearer_deactivated(fsm_t *s, event_t *e)
|
|
{
|
|
mme_sm_trace(3, e);
|
|
|
|
switch (event_get(e))
|
|
{
|
|
case FSM_ENTRY_SIG:
|
|
{
|
|
break;
|
|
}
|
|
case FSM_EXIT_SIG:
|
|
{
|
|
break;
|
|
}
|
|
default:
|
|
{
|
|
d_error("Unknown event %s", mme_event_get_name(e));
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
void esm_state_exception(fsm_t *s, event_t *e)
|
|
{
|
|
mme_sm_trace(3, e);
|
|
|
|
switch (event_get(e))
|
|
{
|
|
case FSM_ENTRY_SIG:
|
|
{
|
|
break;
|
|
}
|
|
case FSM_EXIT_SIG:
|
|
{
|
|
break;
|
|
}
|
|
default:
|
|
{
|
|
d_error("Unknown event %s", mme_event_get_name(e));
|
|
break;
|
|
}
|
|
}
|
|
}
|