forked from acouzens/open5gs
146 lines
4.3 KiB
C
146 lines
4.3 KiB
C
#define TRACE_MODULE _sgw_sm
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#include "core_debug.h"
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#include "sgw_context.h"
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#include "sgw_event.h"
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#include "sgw_gtp_path.h"
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#include "sgw_handler.h"
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void sgw_state_initial(fsm_t *s, event_t *e)
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{
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sgw_sm_trace(3, e);
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d_assert(s, return, "Null param");
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FSM_TRAN(s, &sgw_state_operational);
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}
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void sgw_state_final(fsm_t *s, event_t *e)
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{
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sgw_sm_trace(3, e);
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d_assert(s, return, "Null param");
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}
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void sgw_state_operational(fsm_t *s, event_t *e)
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{
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status_t rv;
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sgw_sm_trace(3, e);
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d_assert(s, 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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rv = sgw_gtp_open();
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if (rv != CORE_OK)
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{
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d_error("Can't establish SGW path");
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break;
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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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rv = sgw_gtp_close();
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if (rv != CORE_OK)
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{
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d_error("Can't close SGW path");
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break;
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}
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break;
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}
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case SGW_EVT_S11_MESSAGE:
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case SGW_EVT_S5C_MESSAGE:
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{
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status_t rv;
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net_sock_t *sock = (net_sock_t *)event_get_param1(e);
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gtp_node_t *gnode = (gtp_node_t *)event_get_param2(e);
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pkbuf_t *pkbuf = (pkbuf_t *)event_get_param3(e);
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gtp_xact_t *xact = NULL;
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gtp_message_t message;
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sgw_sess_t *sess = NULL;
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d_assert(pkbuf, break, "Null param");
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d_assert(sock, pkbuf_free(pkbuf); break, "Null param");
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d_assert(gnode, pkbuf_free(pkbuf); break, "Null param");
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rv = gtp_xact_receive(sock, gnode, pkbuf, &xact, &message);
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if (rv != CORE_OK)
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break;
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if (message.h.type == GTP_CREATE_SESSION_REQUEST_TYPE)
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sess = sgw_sess_find_or_add_by_message(&message);
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else
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sess = sgw_sess_find_by_teid(message.h.teid);
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d_assert(sess, pkbuf_free(pkbuf); break, "No Session Context");
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switch(message.h.type)
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{
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case GTP_CREATE_SESSION_REQUEST_TYPE:
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sgw_handle_create_session_request(
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xact, sess, &message);
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break;
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case GTP_CREATE_SESSION_RESPONSE_TYPE:
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sgw_handle_create_session_response(
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xact, sess, &message);
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break;
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case GTP_MODIFY_BEARER_REQUEST_TYPE:
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sgw_handle_modify_bearer_request(
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xact, sess, &message.modify_bearer_request);
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break;
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case GTP_DELETE_SESSION_REQUEST_TYPE:
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sgw_handle_delete_session_request(
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xact, sess, &message);
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break;
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case GTP_DELETE_SESSION_RESPONSE_TYPE:
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sgw_handle_delete_session_response(
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xact, sess, &message);
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break;
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case GTP_RELEASE_ACCESS_BEARERS_REQUEST_TYPE:
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sgw_handle_release_access_bearers_request(
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xact, sess,
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&message.release_access_bearers_request);
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break;
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case GTP_DOWNLINK_DATA_NOTIFICATION_ACKNOWLEDGE_TYPE:
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sgw_handle_downlink_data_notification_ack(
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sess,
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&message.downlink_data_notification_acknowledge);
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break;
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default:
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d_warn("Not implmeneted(type:%d)", message.h.type);
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break;
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}
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pkbuf_free(pkbuf);
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break;
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}
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case SGW_EVT_GTP_T3:
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{
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gtp_xact_timeout(event_get_param1(e));
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break;
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}
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case SGW_EVT_LO_DLDATA_NOTI:
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{
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index_t index = (index_t)event_get_param1(e);
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sgw_bearer_t* bearer = sgw_bearer_find(index);
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if (!bearer)
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{
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d_error("Can not find bearer with index(%d)",index);
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break;
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}
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sgw_handle_lo_dldata_notification(bearer);
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break;
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}
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default:
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{
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d_error("No handler for event %s", sgw_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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