forked from acouzens/open5gs
390 lines
11 KiB
C
390 lines
11 KiB
C
#include "nas/nas-message.h"
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#include "mme_event.h"
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#include "mme_sm.h"
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#include "mme_fd_path.h"
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#include "emm_handler.h"
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#include "esm_build.h"
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#include "esm_handler.h"
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#include "mme_s11_handler.h"
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#include "nas_path.h"
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#include "mme_gtp_path.h"
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#undef OGS_LOG_DOMAIN
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#define OGS_LOG_DOMAIN __esm_log_domain
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void esm_state_initial(ogs_fsm_t *s, mme_event_t *e)
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{
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ogs_assert(s);
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mme_sm_debug(e);
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OGS_FSM_TRAN(s, &esm_state_inactive);
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}
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void esm_state_final(ogs_fsm_t *s, mme_event_t *e)
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{
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ogs_assert(s);
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mme_sm_debug(e);
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}
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void esm_state_inactive(ogs_fsm_t *s, mme_event_t *e)
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{
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int rv;
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mme_ue_t *mme_ue = NULL;
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mme_sess_t *sess = NULL;
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mme_bearer_t *bearer = NULL;
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ogs_assert(s);
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ogs_assert(e);
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mme_sm_debug(e);
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bearer = e->bearer;
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ogs_assert(bearer);
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sess = bearer->sess;
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ogs_assert(sess);
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mme_ue = sess->mme_ue;
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ogs_assert(mme_ue);
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switch (e->id)
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{
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case OGS_FSM_ENTRY_SIG:
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{
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break;
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}
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case OGS_FSM_EXIT_SIG:
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{
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break;
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}
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case MME_EVT_ESM_MESSAGE:
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{
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nas_message_t *message = e->nas_message;
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ogs_assert(message);
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switch(message->esm.h.message_type)
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{
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case NAS_PDN_CONNECTIVITY_REQUEST:
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{
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ogs_debug("[ESM] PDN Connectivity request");
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ogs_debug(" IMSI[%s] PTI[%d] EBI[%d]",
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mme_ue->imsi_bcd, sess->pti, bearer->ebi);
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rv = esm_handle_pdn_connectivity_request(
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bearer, &message->esm.pdn_connectivity_request);
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if (rv != OGS_OK)
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{
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OGS_FSM_TRAN(s, esm_state_exception);
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break;
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}
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break;
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}
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case NAS_ESM_INFORMATION_RESPONSE:
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{
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ogs_debug("[ESM] ESM information response");
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ogs_debug(" IMSI[%s] PTI[%d] EBI[%d]",
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mme_ue->imsi_bcd, sess->pti, bearer->ebi);
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rv = esm_handle_information_response(
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sess, &message->esm.esm_information_response);
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if (rv != OGS_OK)
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{
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OGS_FSM_TRAN(s, esm_state_exception);
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break;
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}
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break;
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}
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case NAS_ACTIVATE_DEFAULT_EPS_BEARER_CONTEXT_ACCEPT:
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{
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ogs_debug("[ESM] Activate default EPS bearer "
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"context accept");
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ogs_debug(" IMSI[%s] PTI[%d] EBI[%d]",
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mme_ue->imsi_bcd, sess->pti, bearer->ebi);
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/* Check if Initial Context Setup Response or
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* E-RAB Setup Response is received */
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if (MME_HAVE_ENB_S1U_PATH(bearer))
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{
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rv = mme_gtp_send_modify_bearer_request(bearer, 0);
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ogs_assert(rv == OGS_OK);
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}
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rv = nas_send_activate_all_dedicated_bearers(bearer);
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ogs_assert(rv == OGS_OK);
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OGS_FSM_TRAN(s, esm_state_active);
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break;
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}
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case NAS_ACTIVATE_DEDICATED_EPS_BEARER_CONTEXT_ACCEPT:
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{
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ogs_debug("[ESM] Activate dedicated EPS bearer "
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"context accept");
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ogs_debug(" IMSI[%s] PTI[%d] EBI[%d]",
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mme_ue->imsi_bcd, sess->pti, bearer->ebi);
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/* Check if Initial Context Setup Response or
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* E-RAB Setup Response is received */
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if (MME_HAVE_ENB_S1U_PATH(bearer))
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{
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rv = mme_gtp_send_create_bearer_response(bearer);
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ogs_assert(rv == OGS_OK);
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}
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OGS_FSM_TRAN(s, esm_state_active);
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break;
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}
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default:
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{
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ogs_error("Unknown message(type:%d)",
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message->esm.h.message_type);
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break;
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}
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}
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break;
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}
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default:
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{
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ogs_error("Unknown event %s", mme_event_get_name(e));
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break;
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}
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}
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}
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void esm_state_active(ogs_fsm_t *s, mme_event_t *e)
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{
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int rv;
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mme_ue_t *mme_ue = NULL;
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mme_sess_t *sess = NULL;
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mme_bearer_t *bearer = NULL;
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ogs_assert(s);
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ogs_assert(e);
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mme_sm_debug(e);
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bearer = e->bearer;
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ogs_assert(bearer);
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sess = bearer->sess;
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ogs_assert(sess);
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mme_ue = sess->mme_ue;
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ogs_assert(mme_ue);
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switch (e->id)
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{
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case OGS_FSM_ENTRY_SIG:
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{
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break;
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}
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case OGS_FSM_EXIT_SIG:
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{
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break;
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}
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case MME_EVT_ESM_MESSAGE:
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{
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nas_message_t *message = e->nas_message;
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ogs_assert(message);
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switch(message->esm.h.message_type)
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{
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case NAS_PDN_CONNECTIVITY_REQUEST:
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{
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ogs_debug("[ESM] PDN Connectivity request");
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ogs_debug(" IMSI[%s] PTI[%d] EBI[%d]",
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mme_ue->imsi_bcd, sess->pti, bearer->ebi);
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rv = esm_handle_pdn_connectivity_request(
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bearer, &message->esm.pdn_connectivity_request);
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if (rv != OGS_OK)
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{
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OGS_FSM_TRAN(s, esm_state_exception);
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break;
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}
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OGS_FSM_TRAN(s, esm_state_inactive);
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break;
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}
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case NAS_PDN_DISCONNECT_REQUEST:
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{
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ogs_debug("[ESM] PDN disconnect request");
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ogs_debug(" IMSI[%s] PTI[%d] EBI[%d]",
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mme_ue->imsi_bcd, sess->pti, bearer->ebi);
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if (MME_HAVE_SGW_S1U_PATH(sess))
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{
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rv = mme_gtp_send_delete_session_request(sess);
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ogs_assert(rv == OGS_OK);
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}
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else
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{
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rv = nas_send_deactivate_bearer_context_request(bearer);
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ogs_assert(rv == OGS_OK);
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}
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OGS_FSM_TRAN(s, esm_state_pdn_will_disconnect);
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break;
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}
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case NAS_MODIFY_EPS_BEARER_CONTEXT_ACCEPT:
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{
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ogs_debug("[ESM] Modify EPS bearer context accept");
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ogs_debug(" IMSI[%s] PTI[%d] EBI[%d]",
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mme_ue->imsi_bcd, sess->pti, bearer->ebi);
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rv = mme_gtp_send_update_bearer_response(bearer);
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ogs_assert(rv == OGS_OK);
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break;
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}
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case NAS_DEACTIVATE_EPS_BEARER_CONTEXT_ACCEPT:
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{
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ogs_debug("[ESM] [A] Deactivate EPS bearer "
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"context accept");
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ogs_debug(" IMSI[%s] PTI[%d] EBI[%d]",
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mme_ue->imsi_bcd, sess->pti, bearer->ebi);
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rv = mme_gtp_send_delete_bearer_response(bearer);
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ogs_assert(rv == OGS_OK);
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OGS_FSM_TRAN(s, esm_state_bearer_deactivated);
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break;
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}
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default:
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{
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ogs_error("Unknown message(type:%d)",
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message->esm.h.message_type);
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break;
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}
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}
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break;
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}
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default:
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{
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ogs_error("Unknown event %s", mme_event_get_name(e));
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break;
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}
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}
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}
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void esm_state_pdn_will_disconnect(ogs_fsm_t *s, mme_event_t *e)
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{
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mme_ue_t *mme_ue = NULL;
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mme_sess_t *sess = NULL;
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mme_bearer_t *bearer = NULL;
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ogs_assert(s);
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ogs_assert(e);
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mme_sm_debug(e);
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bearer = e->bearer;
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ogs_assert(bearer);
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sess = bearer->sess;
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ogs_assert(sess);
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mme_ue = sess->mme_ue;
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ogs_assert(mme_ue);
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switch (e->id)
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{
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case OGS_FSM_ENTRY_SIG:
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{
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break;
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}
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case OGS_FSM_EXIT_SIG:
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{
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break;
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}
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case MME_EVT_ESM_MESSAGE:
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{
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nas_message_t *message = e->nas_message;
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ogs_assert(message);
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switch(message->esm.h.message_type)
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{
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case NAS_DEACTIVATE_EPS_BEARER_CONTEXT_ACCEPT:
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{
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ogs_debug("[ESM] [D] Deactivate EPS bearer "
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"context accept");
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ogs_debug(" IMSI[%s] PTI[%d] EBI[%d]",
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mme_ue->imsi_bcd, sess->pti, bearer->ebi);
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OGS_FSM_TRAN(s, esm_state_pdn_did_disconnect);
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break;
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}
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default:
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{
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ogs_error("Unknown message(type:%d)",
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message->esm.h.message_type);
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break;
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}
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}
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break;
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}
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default:
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{
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ogs_error("Unknown event %s", mme_event_get_name(e));
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break;
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}
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}
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}
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void esm_state_pdn_did_disconnect(ogs_fsm_t *s, mme_event_t *e)
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{
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ogs_assert(e);
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mme_sm_debug(e);
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switch (e->id)
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{
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case OGS_FSM_ENTRY_SIG:
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{
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break;
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}
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case OGS_FSM_EXIT_SIG:
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{
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break;
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}
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default:
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{
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ogs_error("Unknown event %s", mme_event_get_name(e));
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break;
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}
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}
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}
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void esm_state_bearer_deactivated(ogs_fsm_t *s, mme_event_t *e)
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{
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ogs_assert(e);
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mme_sm_debug(e);
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switch (e->id)
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{
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case OGS_FSM_ENTRY_SIG:
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{
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break;
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}
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case OGS_FSM_EXIT_SIG:
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{
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break;
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}
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default:
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{
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ogs_error("Unknown event %s", mme_event_get_name(e));
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break;
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}
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}
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}
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void esm_state_exception(ogs_fsm_t *s, mme_event_t *e)
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{
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ogs_assert(e);
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mme_sm_debug(e);
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switch (e->id)
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{
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case OGS_FSM_ENTRY_SIG:
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{
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break;
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}
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case OGS_FSM_EXIT_SIG:
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{
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break;
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}
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default:
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{
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ogs_error("Unknown event %s", mme_event_get_name(e));
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break;
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}
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}
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}
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