forked from acouzens/open5gs
137 lines
4.1 KiB
C
137 lines
4.1 KiB
C
#define TRACE_MODULE _esm_handler
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#include "core_debug.h"
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#include "nas_message.h"
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#include "mme_context.h"
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#include "nas_path.h"
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#include "mme_gtp_path.h"
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#include "esm_build.h"
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void esm_handle_pdn_connectivity_request(mme_bearer_t *bearer,
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nas_pdn_connectivity_request_t *pdn_connectivity_request)
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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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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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d_assert(MME_UE_HAVE_IMSI(mme_ue), return,
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"No IMSI in PDN_CPNNECTIVITY_REQUEST");
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d_assert(SECURITY_CONTEXT_IS_VALID(mme_ue), return,
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"No Security Context in PDN_CPNNECTIVITY_REQUEST");
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if (pdn_connectivity_request->presencemask &
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NAS_PDN_CONNECTIVITY_REQUEST_ACCESS_POINT_NAME_PRESENT)
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{
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sess->pdn = mme_pdn_find_by_apn(mme_ue,
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pdn_connectivity_request->access_point_name.apn);
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if (!sess->pdn)
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{
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if (FSM_CHECK(&mme_ue->sm, emm_state_attached))
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{
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nas_send_pdn_connectivity_reject(
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sess, ESM_CAUSE_MISSING_OR_UNKNOWN_APN);
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FSM_TRAN(&bearer->sm, esm_state_session_exception);
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return;
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}
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else
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{
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d_assert(0, return, "Invalid EMM State");
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}
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}
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}
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if (pdn_connectivity_request->presencemask &
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NAS_PDN_CONNECTIVITY_REQUEST_PROTOCOL_CONFIGURATION_OPTIONS_PRESENT)
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{
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nas_protocol_configuration_options_t *protocol_configuration_options =
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&pdn_connectivity_request->protocol_configuration_options;
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NAS_STORE_DATA(&sess->ue_pco, protocol_configuration_options);
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}
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if (MME_UE_HAVE_APN(mme_ue))
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{
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if (FSM_CHECK(&mme_ue->sm, emm_state_attached))
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{
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rv = mme_gtp_send_create_session_request(sess);
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d_assert(rv == CORE_OK, return, "gtp send failed");
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}
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else
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{
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if (MME_HAVE_SGW_S11_PATH(mme_ue))
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{
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rv = nas_send_attach_accept(mme_ue);
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d_assert(rv == CORE_OK, return, "nas send failed");
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}
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else
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{
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rv = mme_gtp_send_create_session_request(sess);
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d_assert(rv == CORE_OK, return, "gtp send failed");
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}
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}
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}
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else
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{
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FSM_TRAN(&bearer->sm, esm_state_information);
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}
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}
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void esm_handle_information_response(mme_sess_t *sess,
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nas_esm_information_response_t *esm_information_response)
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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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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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if (esm_information_response->presencemask &
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NAS_ESM_INFORMATION_RESPONSE_ACCESS_POINT_NAME_PRESENT)
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{
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sess->pdn = mme_pdn_find_by_apn(mme_ue,
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esm_information_response->access_point_name.apn);
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d_assert(sess->pdn, return, "No PDN Context[APN:%s])",
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esm_information_response->access_point_name.apn);
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}
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if (esm_information_response->presencemask &
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NAS_ESM_INFORMATION_RESPONSE_PROTOCOL_CONFIGURATION_OPTIONS_PRESENT)
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{
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nas_protocol_configuration_options_t *protocol_configuration_options =
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&esm_information_response->protocol_configuration_options;
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NAS_STORE_DATA(&sess->ue_pco, protocol_configuration_options);
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}
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rv = mme_gtp_send_create_session_request(sess);
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d_assert(rv == CORE_OK, return,
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"mme_gtp_send_create_session_request failed");
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}
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void esm_handle_activate_default_bearer_accept(mme_bearer_t *bearer)
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{
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status_t rv;
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d_assert(bearer, return, "Null param");
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mme_bearer_t *dedicated_bearer = mme_bearer_next(bearer);
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while(dedicated_bearer)
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{
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rv = nas_send_activate_dedicated_bearer_context_request(
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dedicated_bearer);
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d_assert(rv == CORE_OK, return,
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"nas_send_activate_dedicated_bearer_context failed");
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dedicated_bearer = mme_bearer_next(dedicated_bearer);
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}
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}
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