forked from acouzens/open5gs
227 lines
6.4 KiB
C
227 lines
6.4 KiB
C
#define TRACE_MODULE _emm_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 "emm_handler.h"
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#include "emm_build.h"
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#include "mme_s6a_handler.h"
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void emm_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(1, e);
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FSM_TRAN(s, &emm_state_operational);
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}
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void emm_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(1, e);
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}
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void emm_state_operational(fsm_t *s, event_t *e)
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{
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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(1, e);
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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_EMM_BEARER_FROM_S11:
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{
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index_t index = event_get_param1(e);
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mme_bearer_t *bearer = NULL;
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d_assert(index, break, "Null param");
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bearer = mme_bearer_find(index);
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d_assert(bearer, break, "No Bearer context");
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switch(event_get_param2(e))
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{
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case GTP_CREATE_SESSION_RESPONSE_TYPE:
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emm_handle_create_session_response(bearer);
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break;
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case GTP_DELETE_SESSION_RESPONSE_TYPE:
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emm_handle_delete_session_response(bearer);
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break;
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}
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break;
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}
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case MME_EVT_EMM_UE_FROM_S6A:
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case MME_EVT_EMM_UE_FROM_S11:
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{
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index_t index = event_get_param1(e);
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mme_ue_t *ue = NULL;
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d_assert(index, return, "Null param");
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ue = mme_ue_find(index);
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d_assert(ue, return, "Null param");
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switch(event_get_param2(e))
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{
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case S6A_CMD_AUTHENTICATION_INFORMATION:
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{
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d_info("[NAS] Authentication request : UE[%s] <-- EMM",
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ue->imsi_bcd);
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emm_handle_authentication_request(ue);
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break;
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}
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case S6A_CMD_UPDATE_LOCATION:
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{
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mme_sess_t *sess = mme_sess_first(ue);
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while(sess)
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{
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mme_bearer_t *bearer = mme_bearer_first(sess);
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while(bearer)
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{
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event_t e;
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event_set(&e, MME_EVT_ESM_BEARER_FROM_S6A);
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event_set_param1(&e, (c_uintptr_t)bearer->index);
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event_set_param2(&e,
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(c_uintptr_t)S6A_CMD_UPDATE_LOCATION);
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mme_event_send(&e);
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bearer = mme_bearer_next(bearer);
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}
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sess = mme_sess_next(sess);
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}
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break;
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}
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case GTP_MODIFY_BEARER_RESPONSE_TYPE:
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{
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d_info("[GTP] Modify Bearer Response : "
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"MME <-- SGW");
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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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case MME_EVT_EMM_UE_MSG:
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{
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index_t index = event_get_param1(e);
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mme_ue_t *ue = NULL;
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nas_message_t *message = NULL;
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d_assert(index, return, "Null param");
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ue = mme_ue_find(index);
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d_assert(ue, return, "Null param");
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message = (nas_message_t *)event_get_param3(e);
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d_assert(message, break, "Null param");
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switch(message->emm.h.message_type)
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{
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case NAS_ATTACH_REQUEST:
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{
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emm_handle_attach_request(
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ue, &message->emm.attach_request);
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break;
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}
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case NAS_IDENTITY_RESPONSE:
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{
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emm_handle_identity_response(ue,
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&message->emm.identity_response);
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break;
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}
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case NAS_AUTHENTICATION_RESPONSE:
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{
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emm_handle_authentication_response(
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ue, &message->emm.authentication_response);
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break;
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}
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case NAS_SECURITY_MODE_COMPLETE:
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{
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d_info("[NAS] Security mode complete : UE[%s] --> EMM",
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ue->imsi_bcd);
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mme_s6a_send_ulr(ue);
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break;
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}
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case NAS_ATTACH_COMPLETE:
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{
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d_info("[NAS] Attach complete : UE[%s] --> EMM",
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ue->imsi_bcd);
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emm_handle_attach_complete(
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ue, &message->emm.attach_complete);
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break;
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}
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case NAS_EMM_STATUS:
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{
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emm_handle_emm_status(ue, &message->emm.emm_status);
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break;
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}
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case NAS_DETACH_REQUEST:
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{
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emm_handle_detach_request(
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ue, &message->emm.detach_request_from_ue);
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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->emm.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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case MME_EVT_EMM_UE_T3:
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{
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index_t index = event_get_param1(e);
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mme_ue_t *ue = NULL;
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d_assert(index, return, "Null param");
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ue = mme_ue_find(index);
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d_assert(ue, return, "Null param");
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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 emm_state_exception(fsm_t *s, event_t *e)
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{
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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(1, e);
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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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