270 lines
8.5 KiB
C
270 lines
8.5 KiB
C
/*
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* Copyright (C) 2019 by Sukchan Lee <acetcom@gmail.com>
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*
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* This file is part of Open5GS.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "sxa-build.h"
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ogs_pkbuf_t *sgwc_sxa_build_session_establishment_request(
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uint8_t type, sgwc_sess_t *sess)
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{
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ogs_pfcp_message_t pfcp_message;
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ogs_pfcp_session_establishment_request_t *req = NULL;
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ogs_pkbuf_t *pkbuf = NULL;
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ogs_pfcp_pdr_t *pdr = NULL;
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ogs_pfcp_far_t *far = NULL;
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ogs_pfcp_urr_t *urr = NULL;
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ogs_pfcp_qer_t *qer = NULL;
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int i, rv;
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ogs_pfcp_node_id_t node_id;
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ogs_pfcp_f_seid_t f_seid;
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int len;
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ogs_debug("Session Establishment Request");
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ogs_assert(sess);
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req = &pfcp_message.pfcp_session_establishment_request;
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memset(&pfcp_message, 0, sizeof(ogs_pfcp_message_t));
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/* Node ID */
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rv = ogs_pfcp_sockaddr_to_node_id(
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ogs_pfcp_self()->pfcp_addr, ogs_pfcp_self()->pfcp_addr6,
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ogs_app()->parameter.prefer_ipv4,
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&node_id, &len);
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ogs_expect_or_return_val(rv == OGS_OK, NULL);
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req->node_id.presence = 1;
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req->node_id.data = &node_id;
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req->node_id.len = len;
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/* F-SEID */
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rv = ogs_pfcp_sockaddr_to_f_seid(
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ogs_pfcp_self()->pfcp_addr, ogs_pfcp_self()->pfcp_addr6,
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&f_seid, &len);
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ogs_expect_or_return_val(rv == OGS_OK, NULL);
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f_seid.seid = htobe64(sess->sgwc_sxa_seid);
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req->cp_f_seid.presence = 1;
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req->cp_f_seid.data = &f_seid;
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req->cp_f_seid.len = len;
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ogs_pfcp_pdrbuf_init();
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/* Create PDR */
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i = 0;
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ogs_list_for_each(&sess->pfcp.pdr_list, pdr) {
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ogs_pfcp_build_create_pdr(&req->create_pdr[i], i, pdr);
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i++;
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}
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/* Create FAR */
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i = 0;
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ogs_list_for_each(&sess->pfcp.far_list, far) {
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ogs_pfcp_build_create_far(&req->create_far[i], i, far);
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i++;
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}
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/* Create URR */
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i = 0;
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ogs_list_for_each(&sess->pfcp.urr_list, urr) {
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ogs_pfcp_build_create_urr(&req->create_urr[i], i, urr);
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i++;
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}
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/* Create QER */
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i = 0;
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ogs_list_for_each(&sess->pfcp.qer_list, qer) {
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ogs_pfcp_build_create_qer(&req->create_qer[i], i, qer);
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i++;
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}
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/* Create BAR */
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if (sess->pfcp.bar) {
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ogs_pfcp_build_create_bar(&req->create_bar, sess->pfcp.bar);
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}
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pfcp_message.h.type = type;
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pkbuf = ogs_pfcp_build_msg(&pfcp_message);
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ogs_pfcp_pdrbuf_clear();
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return pkbuf;
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}
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ogs_pkbuf_t *sgwc_sxa_build_session_modification_request(
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uint8_t type, sgwc_sess_t *sess, ogs_pfcp_xact_t *xact)
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{
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ogs_pfcp_message_t pfcp_message;
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ogs_pfcp_session_modification_request_t *req = NULL;
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ogs_pkbuf_t *pkbuf = NULL;
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ogs_pfcp_pdr_t *pdr = NULL;
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ogs_pfcp_far_t *far = NULL;
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sgwc_tunnel_t *tunnel = NULL;
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sgwc_bearer_t *bearer = NULL;
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int num_of_remove_pdr = 0;
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int num_of_remove_far = 0;
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int num_of_create_pdr = 0;
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int num_of_create_far = 0;
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int num_of_update_far = 0;
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uint64_t modify_flags = 0;
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ogs_debug("Session Modification Request");
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ogs_assert(sess);
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ogs_assert(xact);
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modify_flags = xact->modify_flags;
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ogs_assert(modify_flags);
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req = &pfcp_message.pfcp_session_modification_request;
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memset(&pfcp_message, 0, sizeof(ogs_pfcp_message_t));
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num_of_remove_pdr = 0;
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num_of_remove_far = 0;
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num_of_create_pdr = 0;
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num_of_create_far = 0;
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num_of_update_far = 0;
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if (modify_flags & OGS_PFCP_MODIFY_CREATE) {
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ogs_pfcp_pdrbuf_init();
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}
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ogs_list_for_each_entry(
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&xact->bearer_to_modify_list, bearer, to_modify_node) {
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ogs_list_for_each(&bearer->tunnel_list, tunnel) {
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if (((modify_flags &
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(OGS_PFCP_MODIFY_DL_ONLY|
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OGS_PFCP_MODIFY_UL_ONLY|
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OGS_PFCP_MODIFY_INDIRECT)) == 0) ||
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((modify_flags & OGS_PFCP_MODIFY_DL_ONLY) &&
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(tunnel->interface_type == OGS_GTP2_F_TEID_S5_S8_SGW_GTP_U)) ||
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((modify_flags & OGS_PFCP_MODIFY_UL_ONLY) &&
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(tunnel->interface_type == OGS_GTP2_F_TEID_S1_U_SGW_GTP_U)) ||
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(((modify_flags & OGS_PFCP_MODIFY_INDIRECT) &&
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((tunnel->interface_type ==
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OGS_GTP2_F_TEID_SGW_GTP_U_FOR_DL_DATA_FORWARDING) ||
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(tunnel->interface_type ==
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OGS_GTP2_F_TEID_SGW_GTP_U_FOR_UL_DATA_FORWARDING))))) {
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if (modify_flags & OGS_PFCP_MODIFY_REMOVE) {
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pdr = tunnel->pdr;
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if (pdr) {
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ogs_pfcp_tlv_remove_pdr_t *message =
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&req->remove_pdr[num_of_remove_pdr];
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message->presence = 1;
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message->pdr_id.presence = 1;
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message->pdr_id.u16 = pdr->id;
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num_of_remove_pdr++;
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} else
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ogs_assert_if_reached();
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far = tunnel->far;
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if (far) {
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ogs_pfcp_tlv_remove_far_t *message =
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&req->remove_far[num_of_remove_far];
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message->presence = 1;
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message->far_id.presence = 1;
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message->far_id.u32 = far->id;
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num_of_remove_far++;
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} else
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ogs_assert_if_reached();
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} else if (modify_flags & OGS_PFCP_MODIFY_CREATE) {
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pdr = tunnel->pdr;
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if (pdr) {
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ogs_pfcp_build_create_pdr(
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&req->create_pdr[num_of_create_pdr],
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num_of_create_pdr, pdr);
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num_of_create_pdr++;
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ogs_list_add(&xact->pdr_to_create_list,
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&pdr->to_create_node);
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} else
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ogs_assert_if_reached();
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far = tunnel->far;
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if (far) {
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ogs_pfcp_build_create_far(
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&req->create_far[num_of_create_far],
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num_of_create_far, far);
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num_of_create_far++;
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} else
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ogs_assert_if_reached();
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} else if (modify_flags & OGS_PFCP_MODIFY_DEACTIVATE) {
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far = tunnel->far;
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if (far) {
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ogs_pfcp_build_update_far_deactivate(
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&req->update_far[num_of_update_far],
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num_of_update_far, far);
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num_of_update_far++;
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} else
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ogs_assert_if_reached();
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} else if (modify_flags & OGS_PFCP_MODIFY_ACTIVATE) {
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far = tunnel->far;
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if (far) {
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if (modify_flags & OGS_PFCP_MODIFY_END_MARKER) {
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far->smreq_flags.send_end_marker_packets = 1;
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}
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ogs_pfcp_build_update_far_activate(
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&req->update_far[num_of_update_far],
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num_of_update_far, far);
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num_of_update_far++;
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/* Clear all FAR flags */
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tunnel->far->smreq_flags.value = 0;
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} else
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ogs_assert_if_reached();
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}
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}
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}
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}
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pfcp_message.h.type = type;
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pkbuf = ogs_pfcp_build_msg(&pfcp_message);
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if (modify_flags & OGS_PFCP_MODIFY_CREATE) {
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ogs_pfcp_pdrbuf_clear();
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}
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return pkbuf;
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}
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ogs_pkbuf_t *sgwc_sxa_build_session_deletion_request(
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uint8_t type, sgwc_sess_t *sess)
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{
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ogs_pfcp_message_t pfcp_message;
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ogs_debug("Session Deletion Request");
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ogs_assert(sess);
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pfcp_message.h.type = type;
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return ogs_pfcp_build_msg(&pfcp_message);
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}
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