forked from acouzens/open5gs
412 lines
11 KiB
C
412 lines
11 KiB
C
#define TRACE_MODULE _mme_gtp_path
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#include "core_debug.h"
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#include "core_pkbuf.h"
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#include "gtp/gtp_node.h"
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#include "gtp/gtp_path.h"
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#include "gtp/gtp_xact.h"
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#include "mme_event.h"
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#include "mme_gtp_path.h"
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#include "mme_s11_build.h"
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#include "mme_sm.h"
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static int _gtpv2_c_recv_cb(sock_id sock, void *data)
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{
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status_t rv;
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event_t e;
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pkbuf_t *pkbuf = NULL;
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d_assert(sock, return -1, "Null param");
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rv = gtp_recv(sock, &pkbuf);
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if (rv != CORE_OK)
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{
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if (errno == EAGAIN)
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return 0;
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return -1;
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}
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d_trace(50, "[GTPv2] RECV : ");
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d_trace_hex(50, pkbuf->payload, pkbuf->len);
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event_set(&e, MME_EVT_S11_MESSAGE);
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event_set_param1(&e, (c_uintptr_t)pkbuf);
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rv = mme_event_send(&e);
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if (rv != CORE_OK)
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{
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d_error("mme_event_send error");
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pkbuf_free(pkbuf);
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return -1;
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}
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return 0;
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}
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static c_sockaddr_t *gtp_addr_find_by_family(list_t *list, int family)
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{
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gtp_node_t *gnode = NULL;
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d_assert(list, return NULL,);
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for (gnode = list_first(list); gnode; gnode = list_next(gnode))
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{
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c_sockaddr_t *addr = gnode->sa_list;
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while(addr)
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{
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if (addr->c_sa_family == family)
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{
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return addr;
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}
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addr = addr->next;
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}
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}
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return NULL;
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}
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status_t mme_gtp_open()
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{
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status_t rv;
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gtp_node_t *gnode = NULL;
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rv = gtp_server_list(&mme_self()->gtpc_list, _gtpv2_c_recv_cb);
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d_assert(rv == CORE_OK, return CORE_ERROR,);
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rv = gtp_server_list(&mme_self()->gtpc_list6, _gtpv2_c_recv_cb);
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d_assert(rv == CORE_OK, return CORE_ERROR,);
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mme_self()->gtpc_sock = gtp_local_sock_first(&mme_self()->gtpc_list);
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mme_self()->gtpc_sock6 = gtp_local_sock_first(&mme_self()->gtpc_list6);
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mme_self()->gtpc_addr = gtp_local_addr_first(&mme_self()->gtpc_list);
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mme_self()->gtpc_addr6 = gtp_local_addr_first(&mme_self()->gtpc_list6);
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d_assert(mme_self()->gtpc_addr || mme_self()->gtpc_addr6,
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return CORE_ERROR, "No GTP Server");
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mme_self()->pgw_addr = gtp_addr_find_by_family(
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&mme_self()->pgw_list, AF_INET);
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mme_self()->pgw_addr6 = gtp_addr_find_by_family(
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&mme_self()->pgw_list, AF_INET6);
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d_assert(mme_self()->pgw_addr || mme_self()->pgw_addr6,
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return CORE_ERROR,);
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for (gnode = list_first(&mme_self()->sgw_list);
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gnode; gnode = list_next(gnode))
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{
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rv = gtp_client(gnode);
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d_assert(rv == CORE_OK, return CORE_ERROR,);
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}
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return CORE_OK;
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}
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status_t mme_gtp_close()
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{
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sock_delete_list(&mme_self()->gtpc_list);
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sock_delete_list(&mme_self()->gtpc_list6);
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return CORE_OK;
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}
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status_t mme_gtp_send_create_session_request(mme_sess_t *sess)
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{
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status_t rv;
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gtp_header_t h;
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pkbuf_t *pkbuf = NULL;
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gtp_xact_t *xact = NULL;
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mme_ue_t *mme_ue = NULL;
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mme_ue = sess->mme_ue;
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d_assert(mme_ue, return CORE_ERROR, "Null param");
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memset(&h, 0, sizeof(gtp_header_t));
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h.type = GTP_CREATE_SESSION_REQUEST_TYPE;
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h.teid = mme_ue->sgw_s11_teid;
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rv = mme_s11_build_create_session_request(&pkbuf, h.type, sess);
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d_assert(rv == CORE_OK, return CORE_ERROR,
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"S11 build error");
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xact = gtp_xact_local_create(mme_ue->gnode, &h, pkbuf);
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d_assert(xact, return CORE_ERROR, "Null param");
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rv = gtp_xact_commit(xact);
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d_assert(rv == CORE_OK, return CORE_ERROR, "xact_commit error");
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return CORE_OK;
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}
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status_t mme_gtp_send_modify_bearer_request(
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mme_bearer_t *bearer, int uli_presence)
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{
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status_t rv;
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gtp_xact_t *xact = NULL;
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mme_ue_t *mme_ue = NULL;
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gtp_header_t h;
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pkbuf_t *pkbuf = NULL;
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d_assert(bearer, return CORE_ERROR, "Null param");
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mme_ue = bearer->mme_ue;
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d_assert(mme_ue, return CORE_ERROR, "Null param");
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memset(&h, 0, sizeof(gtp_header_t));
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h.type = GTP_MODIFY_BEARER_REQUEST_TYPE;
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h.teid = mme_ue->sgw_s11_teid;
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rv = mme_s11_build_modify_bearer_request(
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&pkbuf, h.type, bearer, uli_presence);
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d_assert(rv == CORE_OK, return CORE_ERROR, "S11 build error");
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xact = gtp_xact_local_create(mme_ue->gnode, &h, pkbuf);
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d_assert(xact, return CORE_ERROR, "Null param");
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rv = gtp_xact_commit(xact);
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d_assert(rv == CORE_OK, return CORE_ERROR, "xact_commit error");
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return CORE_OK;
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}
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status_t mme_gtp_send_delete_session_request(mme_sess_t *sess)
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{
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status_t rv;
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pkbuf_t *s11buf = NULL;
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gtp_header_t h;
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gtp_xact_t *xact = NULL;
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mme_ue_t *mme_ue = NULL;
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d_assert(sess, return CORE_ERROR, "Null param");
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mme_ue = sess->mme_ue;
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d_assert(mme_ue, return CORE_ERROR, "Null param");
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memset(&h, 0, sizeof(gtp_header_t));
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h.type = GTP_DELETE_SESSION_REQUEST_TYPE;
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h.teid = mme_ue->sgw_s11_teid;
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rv = mme_s11_build_delete_session_request(&s11buf, h.type, sess);
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d_assert(rv == CORE_OK, return CORE_ERROR, "S11 build error");
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xact = gtp_xact_local_create(mme_ue->gnode, &h, s11buf);
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d_assert(xact, return CORE_ERROR, "Null param");
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GTP_XACT_STORE_SESSION(xact, sess);
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rv = gtp_xact_commit(xact);
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d_assert(rv == CORE_OK, return CORE_ERROR, "xact_commit error");
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return CORE_OK;
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}
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status_t mme_gtp_send_delete_all_sessions(mme_ue_t *mme_ue)
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{
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status_t rv;
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mme_sess_t *sess = NULL, *next_sess = NULL;
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d_assert(mme_ue, return CORE_ERROR, "Null param");
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sess = mme_sess_first(mme_ue);
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while (sess != NULL)
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{
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next_sess = mme_sess_next(sess);
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if (MME_HAVE_SGW_S1U_PATH(sess))
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{
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mme_bearer_t *bearer = mme_default_bearer_in_sess(sess);
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d_assert(bearer,, "Null param");
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if (bearer && FSM_CHECK(&bearer->sm, esm_state_pdn_will_disconnect))
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{
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d_warn("PDN will disconnect[EBI:%d]", bearer->ebi);
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}
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else
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{
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rv = mme_gtp_send_delete_session_request(sess);
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d_assert(rv == CORE_OK, return CORE_ERROR,
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"mme_gtp_send_delete_session_request error");
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}
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}
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else
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{
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mme_sess_remove(sess);
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}
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sess = next_sess;
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}
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return CORE_OK;
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}
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status_t mme_gtp_send_create_bearer_response(mme_bearer_t *bearer)
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{
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status_t rv;
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gtp_xact_t *xact = NULL;
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mme_ue_t *mme_ue = NULL;
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gtp_header_t h;
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pkbuf_t *pkbuf = NULL;
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d_assert(bearer, return CORE_ERROR, "Null param");
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mme_ue = bearer->mme_ue;
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d_assert(mme_ue, return CORE_ERROR, "Null param");
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xact = bearer->xact;
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d_assert(xact, return CORE_ERROR, "Null param");
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memset(&h, 0, sizeof(gtp_header_t));
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h.type = GTP_CREATE_BEARER_RESPONSE_TYPE;
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h.teid = mme_ue->sgw_s11_teid;
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rv = mme_s11_build_create_bearer_response(&pkbuf, h.type, bearer);
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d_assert(rv == CORE_OK, return CORE_ERROR, "S11 build error");
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rv = gtp_xact_update_tx(xact, &h, pkbuf);
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d_assert(xact, return CORE_ERROR, "Null param");
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rv = gtp_xact_commit(xact);
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d_assert(rv == CORE_OK, return CORE_ERROR, "xact_commit error");
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return CORE_OK;
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}
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status_t mme_gtp_send_update_bearer_response(mme_bearer_t *bearer)
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{
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status_t rv;
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gtp_xact_t *xact = NULL;
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mme_ue_t *mme_ue = NULL;
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gtp_header_t h;
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pkbuf_t *pkbuf = NULL;
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d_assert(bearer, return CORE_ERROR, "Null param");
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mme_ue = bearer->mme_ue;
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d_assert(mme_ue, return CORE_ERROR, "Null param");
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xact = bearer->xact;
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d_assert(xact, return CORE_ERROR, "Null param");
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memset(&h, 0, sizeof(gtp_header_t));
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h.type = GTP_UPDATE_BEARER_RESPONSE_TYPE;
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h.teid = mme_ue->sgw_s11_teid;
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rv = mme_s11_build_update_bearer_response(&pkbuf, h.type, bearer);
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d_assert(rv == CORE_OK, return CORE_ERROR, "S11 build error");
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rv = gtp_xact_update_tx(xact, &h, pkbuf);
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d_assert(xact, return CORE_ERROR, "Null param");
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rv = gtp_xact_commit(xact);
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d_assert(rv == CORE_OK, return CORE_ERROR, "xact_commit error");
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return CORE_OK;
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}
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status_t mme_gtp_send_delete_bearer_response(mme_bearer_t *bearer)
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{
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status_t rv;
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gtp_xact_t *xact = NULL;
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mme_ue_t *mme_ue = NULL;
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gtp_header_t h;
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pkbuf_t *pkbuf = NULL;
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d_assert(bearer, return CORE_ERROR, "Null param");
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mme_ue = bearer->mme_ue;
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d_assert(mme_ue, return CORE_ERROR, "Null param");
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xact = bearer->xact;
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d_assert(xact, return CORE_ERROR, "Null param");
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memset(&h, 0, sizeof(gtp_header_t));
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h.type = GTP_DELETE_BEARER_RESPONSE_TYPE;
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h.teid = mme_ue->sgw_s11_teid;
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rv = mme_s11_build_delete_bearer_response(&pkbuf, h.type, bearer);
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d_assert(rv == CORE_OK, return CORE_ERROR, "S11 build error");
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rv = gtp_xact_update_tx(xact, &h, pkbuf);
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d_assert(xact, return CORE_ERROR, "Null param");
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rv = gtp_xact_commit(xact);
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d_assert(rv == CORE_OK, return CORE_ERROR, "xact_commit error");
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return CORE_OK;
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}
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status_t mme_gtp_send_release_access_bearers_request(mme_ue_t *mme_ue)
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{
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status_t rv;
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gtp_header_t h;
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pkbuf_t *pkbuf = NULL;
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gtp_xact_t *xact = NULL;
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d_assert(mme_ue, return CORE_ERROR, "Null param");
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memset(&h, 0, sizeof(gtp_header_t));
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h.type = GTP_RELEASE_ACCESS_BEARERS_REQUEST_TYPE;
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h.teid = mme_ue->sgw_s11_teid;
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rv = mme_s11_build_release_access_bearers_request(&pkbuf, h.type);
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d_assert(rv == CORE_OK, return CORE_ERROR, "S11 build error");
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xact = gtp_xact_local_create(mme_ue->gnode, &h, pkbuf);
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d_assert(xact, return CORE_ERROR, "Null param");
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rv = gtp_xact_commit(xact);
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d_assert(rv == CORE_OK, return CORE_ERROR, "xact_commit error");
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return CORE_OK;
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}
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status_t mme_gtp_send_create_indirect_data_forwarding_tunnel_request(
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mme_ue_t *mme_ue)
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{
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status_t rv;
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gtp_header_t h;
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pkbuf_t *pkbuf = NULL;
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gtp_xact_t *xact = NULL;
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d_assert(mme_ue, return CORE_ERROR, "Null param");
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memset(&h, 0, sizeof(gtp_header_t));
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h.type = GTP_CREATE_INDIRECT_DATA_FORWARDING_TUNNEL_REQUEST_TYPE;
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h.teid = mme_ue->sgw_s11_teid;
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rv = mme_s11_build_create_indirect_data_forwarding_tunnel_request(
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&pkbuf, h.type, mme_ue);
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d_assert(rv == CORE_OK, return CORE_ERROR, "S11 build error");
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xact = gtp_xact_local_create(mme_ue->gnode, &h, pkbuf);
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d_assert(xact, return CORE_ERROR, "Null param");
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rv = gtp_xact_commit(xact);
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d_assert(rv == CORE_OK, return CORE_ERROR, "xact_commit error");
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return CORE_OK;
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}
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status_t mme_gtp_send_delete_indirect_data_forwarding_tunnel_request(
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mme_ue_t *mme_ue)
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{
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status_t rv;
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gtp_header_t h;
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pkbuf_t *pkbuf = NULL;
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gtp_xact_t *xact = NULL;
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d_assert(mme_ue, return CORE_ERROR, "Null param");
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memset(&h, 0, sizeof(gtp_header_t));
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h.type = GTP_DELETE_INDIRECT_DATA_FORWARDING_TUNNEL_REQUEST_TYPE;
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h.teid = mme_ue->sgw_s11_teid;
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pkbuf = pkbuf_alloc(TLV_MAX_HEADROOM, 0);
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d_assert(pkbuf, return CORE_ERROR, "S11 build error");
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xact = gtp_xact_local_create(mme_ue->gnode, &h, pkbuf);
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d_assert(xact, return CORE_ERROR, "Null param");
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rv = gtp_xact_commit(xact);
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d_assert(rv == CORE_OK, return CORE_ERROR, "xact_commit error");
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return CORE_OK;
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}
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