forked from acouzens/open5gs
127 lines
3.5 KiB
C
127 lines
3.5 KiB
C
#define TRACE_MODULE _mme_s11_handler
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#include "core_debug.h"
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#include "gtp_types.h"
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#include "mme_event.h"
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#include "mme_context.h"
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#include "mme_s11_handler.h"
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void mme_s11_handle_create_session_response(
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mme_sess_t *sess, gtp_create_session_response_t *rsp)
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{
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event_t e;
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gtp_f_teid_t *sgw_s11_teid = NULL;
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gtp_f_teid_t *sgw_s1u_teid = NULL;
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mme_bearer_t *bearer = NULL;
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pdn_t *pdn = NULL;
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d_assert(sess, return, "Null param");
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d_assert(rsp, return, "Null param");
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if (rsp->sender_f_teid_for_control_plane.presence == 0)
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{
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d_error("No GTP TEID");
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return;
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}
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if (rsp->pdn_address_allocation.presence == 0)
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{
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d_error("No PDN Address Allocation");
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return;
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}
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if (rsp->bearer_contexts_created.presence == 0)
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{
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d_error("No Bearer");
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return;
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}
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if (rsp->bearer_contexts_created.eps_bearer_id.presence == 0)
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{
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d_error("No EPS Bearer ID");
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return;
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}
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if (rsp->bearer_contexts_created.s1_u_enodeb_f_teid.presence == 0)
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{
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d_error("No GTP TEID");
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return;
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}
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bearer = mme_bearer_find_by_sess_ebi(
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sess, rsp->bearer_contexts_created.eps_bearer_id.u8);
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d_assert(bearer, return, "No ESM Context");
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pdn = bearer->pdn;
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d_assert(pdn, return, "No PDN Context");
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/* Receive Control Plane(UL) : SGW-S11 */
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sgw_s11_teid = rsp->sender_f_teid_for_control_plane.data;
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sess->sgw_s11_teid = ntohl(sgw_s11_teid->teid);
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sess->sgw_s11_addr = sgw_s11_teid->ipv4_addr;
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memcpy(&pdn->paa, rsp->pdn_address_allocation.data,
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rsp->pdn_address_allocation.len);
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if (rsp->protocol_configuration_options.presence)
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{
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bearer->pgw_pco_len = rsp->protocol_configuration_options.len;
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memcpy(bearer->pgw_pco, rsp->protocol_configuration_options.data,
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bearer->pgw_pco_len);
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}
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/* Receive Data Plane(UL) : SGW-S1U */
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sgw_s1u_teid = rsp->bearer_contexts_created.s1_u_enodeb_f_teid.data;
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bearer->sgw_s1u_teid = ntohl(sgw_s1u_teid->teid);
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bearer->sgw_s1u_addr = sgw_s1u_teid->ipv4_addr;
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d_info("[GTP] Create Session Response : "
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"MME[%d] <-- SGW[%d]", sess->mme_s11_teid, sess->sgw_s11_teid);
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event_set(&e, MME_EVT_EMM_BEARER_FROM_S11);
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event_set_param1(&e, (c_uintptr_t)bearer->index);
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event_set_param2(&e, (c_uintptr_t)GTP_CREATE_SESSION_RESPONSE_TYPE);
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mme_event_send(&e);
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}
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void mme_s11_handle_modify_bearer_response(
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mme_sess_t *sess, gtp_modify_bearer_response_t *rsp)
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{
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mme_ue_t *ue = NULL;
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event_t e;
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d_assert(sess, return, "Null param");
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ue = sess->ue;
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event_set(&e, MME_EVT_EMM_UE_FROM_S11);
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event_set_param1(&e, (c_uintptr_t)ue->index);
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event_set_param2(&e, (c_uintptr_t)GTP_MODIFY_BEARER_RESPONSE_TYPE);
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mme_event_send(&e);
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}
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void mme_s11_handle_delete_session_response(
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mme_sess_t *sess, gtp_delete_session_response_t *rsp)
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{
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event_t e;
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mme_bearer_t *bearer;
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d_assert(sess, return, "Null param");
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d_assert(rsp, return, "Null param");
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bearer = mme_default_bearer_in_sess(sess);
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d_assert(bearer, return, "Null param");
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if (rsp->cause.presence == 0)
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{
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d_error("No Cause");
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return;
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}
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d_info("[GTP] Delete Session Response : "
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"MME[%d] <-- SGW[%d]", sess->mme_s11_teid, sess->sgw_s11_teid);
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event_set(&e, MME_EVT_EMM_BEARER_FROM_S11);
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event_set_param1(&e, (c_uintptr_t)bearer->index);
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event_set_param2(&e, (c_uintptr_t)GTP_DELETE_SESSION_RESPONSE_TYPE);
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mme_event_send(&e);
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}
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