forked from acouzens/open5gs
363 lines
9.4 KiB
C
363 lines
9.4 KiB
C
#define TRACE_MODULE _esm_sm
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#include "core_debug.h"
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#include "nas_message.h"
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#include "mme_event.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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void esm_state_initial(fsm_t *s, event_t *e)
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{
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d_assert(s, return, "Null param");
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mme_sm_trace(3, e);
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FSM_TRAN(s, &esm_state_inactive);
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}
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void esm_state_final(fsm_t *s, event_t *e)
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{
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d_assert(s, return, "Null param");
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mme_sm_trace(3, e);
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}
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void esm_state_inactive(fsm_t *s, event_t *e)
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{
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status_t 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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d_assert(s, return, "Null param");
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d_assert(e, return, "Null param");
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mme_sm_trace(3, e);
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bearer = mme_bearer_find(event_get_param1(e));
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d_assert(bearer, return, "Null param");
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sess = bearer->sess;
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d_assert(sess, return, "Null param");
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mme_ue = sess->mme_ue;
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d_assert(mme_ue, return, "Null param");
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switch (event_get(e))
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{
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case FSM_ENTRY_SIG:
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{
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break;
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}
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case 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 = (nas_message_t *)event_get_param3(e);
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d_assert(message, break, "Null param");
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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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esm_handle_pdn_connectivity_request(
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bearer, &message->esm.pdn_connectivity_request);
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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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d_trace(3, "[NAS] Activate default EPS bearer "
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"context accept : UE[%s] --> ESM[%d]\n",
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mme_ue->imsi_bcd, bearer->ebi);
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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);
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d_assert(rv == CORE_OK, return,
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"mme_gtp_send_modify_bearer_request failed");
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}
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esm_handle_activate_default_bearer_accept(bearer);
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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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d_trace(3, "[NAS] Activate dedicated EPS bearer "
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"context accept : UE[%s] --> ESM[%d]\n",
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mme_ue->imsi_bcd, bearer->ebi);
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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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d_assert(rv == CORE_OK, return,
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"mme_gtp_send_create_bearer_response failed");
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}
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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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d_warn("Not implemented(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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d_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_information(fsm_t *s, 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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d_assert(s, return, "Null param");
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d_assert(e, return, "Null param");
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mme_sm_trace(3, e);
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bearer = mme_bearer_find(event_get_param1(e));
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d_assert(bearer, return, "Null param");
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sess = bearer->sess;
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d_assert(sess, return, "Null param");
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mme_ue = sess->mme_ue;
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d_assert(mme_ue, return, "Null param");
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switch (event_get(e))
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{
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case FSM_ENTRY_SIG:
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{
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status_t rv;
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pkbuf_t *esmbuf = NULL;
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rv = esm_build_information_request(&esmbuf, bearer);
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d_assert(rv == CORE_OK && esmbuf, return,
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"esm_build failed");
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d_assert(nas_send_to_downlink_nas_transport(
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mme_ue, esmbuf) == CORE_OK,,);
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break;
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}
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case 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 = (nas_message_t *)event_get_param3(e);
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d_assert(message, break, "Null param");
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switch(message->esm.h.message_type)
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{
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case NAS_ESM_INFORMATION_RESPONSE:
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{
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d_trace(3, "[NAS] ESM information response : "
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"UE[%s] --> ESM[%d]\n",
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mme_ue->imsi_bcd, sess->pti);
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esm_handle_information_response(
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sess, &message->esm.esm_information_response);
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FSM_TRAN(s, esm_state_inactive);
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break;
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}
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default:
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{
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d_warn("Not implemented(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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d_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(fsm_t *s, event_t *e)
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{
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status_t 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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d_assert(s, return, "Null param");
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d_assert(e, return, "Null param");
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mme_sm_trace(3, e);
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bearer = mme_bearer_find(event_get_param1(e));
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d_assert(bearer, return, "Null param");
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sess = bearer->sess;
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d_assert(sess, return, "Null param");
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mme_ue = sess->mme_ue;
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d_assert(mme_ue, return, "Null param");
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switch (event_get(e))
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{
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case FSM_ENTRY_SIG:
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{
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break;
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}
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case 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 = (nas_message_t *)event_get_param3(e);
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d_assert(message, break, "Null param");
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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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esm_handle_pdn_connectivity_request(
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bearer, &message->esm.pdn_connectivity_request);
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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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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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d_assert(rv == CORE_OK, return,
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"mme_gtp_send_delete_session_request error");
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}
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else
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{
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mme_sess_remove(sess);
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}
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FSM_TRAN(s, esm_state_disconnect);
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break;
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}
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default:
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{
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d_warn("Not implemented(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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d_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_disconnect(fsm_t *s, 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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d_assert(s, return, "Null param");
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d_assert(e, return, "Null param");
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mme_sm_trace(3, e);
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bearer = mme_bearer_find(event_get_param1(e));
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d_assert(bearer, return, "Null param");
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sess = bearer->sess;
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d_assert(sess, return, "Null param");
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mme_ue = sess->mme_ue;
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d_assert(mme_ue, return, "Null param");
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switch (event_get(e))
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{
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case FSM_ENTRY_SIG:
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{
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break;
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}
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case 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 = (nas_message_t *)event_get_param3(e);
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d_assert(message, break, "Null param");
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switch(message->esm.h.message_type)
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{
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default:
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{
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FSM_TRAN(s, esm_state_session_exception);
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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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d_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_session_exception(fsm_t *s, event_t *e)
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{
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switch (event_get(e))
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{
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case FSM_ENTRY_SIG:
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{
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break;
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}
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case 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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d_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_exception(fsm_t *s, event_t *e)
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{
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switch (event_get(e))
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{
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case FSM_ENTRY_SIG:
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{
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break;
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}
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case 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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d_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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