114 lines
3.9 KiB
C
114 lines
3.9 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 "mme_event.h"
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#include "esm_build.h"
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#include "s1ap_build.h"
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#include "s1ap_path.h"
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#include "mme_s11_build.h"
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#include "mme_s11_path.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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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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bearer->ue_pco_len = protocol_configuration_options->length;
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d_assert(bearer->ue_pco_len <= MAX_PCO_LEN, return,
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"length(%d) exceeds MAX:%d", bearer->ue_pco_len, MAX_PCO_LEN);
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memcpy(bearer->ue_pco, protocol_configuration_options->buffer,
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bearer->ue_pco_len);
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}
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}
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void esm_handle_s6a_update_location(mme_bearer_t *bearer)
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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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enb_ue_t *enb_ue = NULL;
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mme_enb_t *enb = NULL;
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pkbuf_t *esmbuf = NULL, *s1apbuf = NULL;
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d_assert(bearer, return, "Null param");
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mme_ue = bearer->mme_ue;
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d_assert(mme_ue, return, "Null param");
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enb_ue = mme_ue->enb_ue;
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d_assert(enb_ue, return, "Null param");
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enb = enb_ue->enb;
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d_assert(enb, return, "Null param");
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rv = esm_build_information_request(&esmbuf, bearer);
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d_assert(rv == CORE_OK && esmbuf, return, "esm_build failed");
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rv = s1ap_build_downlink_nas_transport(&s1apbuf, enb_ue, esmbuf);
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d_assert(rv == CORE_OK && s1apbuf,
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pkbuf_free(esmbuf); return, "s1ap build error");
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d_assert(s1ap_send_to_enb(enb, s1apbuf) == CORE_OK,, "s1ap send error");
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}
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void esm_handle_modify_bearer_request(mme_bearer_t *bearer)
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{
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status_t rv;
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mme_sess_t *sess = NULL;
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pkbuf_t *pkbuf = 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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rv = mme_s11_build_modify_bearer_request(&pkbuf, bearer);
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d_assert(rv == CORE_OK, return, "S11 build error");
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rv = mme_s11_send_to_sgw(bearer->sgw,
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GTP_MODIFY_BEARER_REQUEST_TYPE, sess->sgw_s11_teid, pkbuf);
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d_assert(rv == CORE_OK, return, "S11 send error");
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}
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void esm_handle_information_response(mme_bearer_t *bearer,
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nas_esm_information_response_t *esm_information_response)
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{
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mme_ue_t *mme_ue = NULL;
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pkbuf_t *pkbuf = NULL;
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status_t rv;
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d_assert(bearer, return, "Null param");
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mme_ue = bearer->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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bearer->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(bearer->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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bearer->ue_pco_len = protocol_configuration_options->length;
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d_assert(bearer->ue_pco_len <= MAX_PCO_LEN, return,
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"length(%d) exceeds MAX:%d", bearer->ue_pco_len, MAX_PCO_LEN);
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memcpy(bearer->ue_pco, protocol_configuration_options->buffer,
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bearer->ue_pco_len);
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}
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rv = mme_s11_build_create_session_request(&pkbuf, bearer);
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d_assert(rv == CORE_OK, return, "S11 build error");
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rv = mme_s11_send_to_sgw(bearer->sgw,
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GTP_CREATE_SESSION_REQUEST_TYPE, 0, pkbuf);
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d_assert(rv == CORE_OK, return, "S11 send error");
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}
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