forked from acouzens/open5gs
719 lines
20 KiB
C
719 lines
20 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 "context.h"
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#if HAVE_NETINET_IP_H
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#include <netinet/ip.h>
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#endif
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#if HAVE_NETINET_IP6_H
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#include <netinet/ip6.h>
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#endif
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#if HAVE_NETINET_IP_ICMP_H
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#include <netinet/ip_icmp.h>
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#endif
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#if HAVE_NETINET_ICMP6_H
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#include <netinet/icmp6.h>
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#endif
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#include "event.h"
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#include "gtp-path.h"
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#include "pfcp-path.h"
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#include "s5c-build.h"
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#include "gn-build.h"
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static bool check_if_router_solicit(ogs_pkbuf_t *pkbuf);
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static void send_router_advertisement(smf_sess_t *sess, uint8_t *ip6_dst);
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static void bearer_timeout(ogs_gtp_xact_t *xact, void *data);
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static void _gtpv1v2_c_recv_cb(short when, ogs_socket_t fd, void *data)
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{
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smf_event_t *e = NULL;
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int rv;
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ssize_t size;
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ogs_pkbuf_t *pkbuf = NULL;
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ogs_sockaddr_t from;
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ogs_gtp_node_t *gnode = NULL;
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uint8_t gtp_ver;
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ogs_assert(fd != INVALID_SOCKET);
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pkbuf = ogs_pkbuf_alloc(NULL, OGS_MAX_SDU_LEN);
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ogs_assert(pkbuf);
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ogs_pkbuf_put(pkbuf, OGS_MAX_SDU_LEN);
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size = ogs_recvfrom(fd, pkbuf->data, pkbuf->len, 0, &from);
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if (size <= 0) {
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ogs_log_message(OGS_LOG_ERROR, ogs_socket_errno,
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"ogs_recvfrom() failed");
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ogs_pkbuf_free(pkbuf);
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return;
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}
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ogs_pkbuf_trim(pkbuf, size);
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gtp_ver = ((ogs_gtp2_header_t *)pkbuf->data)->version;
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switch (gtp_ver) {
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case 1:
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e = smf_event_new(SMF_EVT_GN_MESSAGE);
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break;
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case 2:
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e = smf_event_new(SMF_EVT_S5C_MESSAGE);
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break;
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default:
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ogs_warn("Rx unexpected GTP version %u", gtp_ver);
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ogs_pkbuf_free(pkbuf);
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return;
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}
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gnode = ogs_gtp_node_find_by_addr(&smf_self()->sgw_s5c_list, &from);
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if (!gnode) {
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gnode = ogs_gtp_node_add_by_addr(&smf_self()->sgw_s5c_list, &from);
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ogs_assert(gnode);
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gnode->sock = data;
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}
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ogs_assert(e);
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e->gnode = gnode;
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e->pkbuf = pkbuf;
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rv = ogs_queue_push(ogs_app()->queue, e);
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if (rv != OGS_OK) {
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ogs_warn("ogs_queue_push() failed:%d", (int)rv);
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ogs_pkbuf_free(e->pkbuf);
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smf_event_free(e);
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}
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}
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static void _gtpv1_u_recv_cb(short when, ogs_socket_t fd, void *data)
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{
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int len;
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ssize_t size;
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char buf[OGS_ADDRSTRLEN];
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ogs_pkbuf_t *pkbuf = NULL;
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ogs_sockaddr_t from;
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ogs_gtp2_header_t *gtp_h = NULL;
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uint32_t teid;
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uint8_t qfi;
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ogs_assert(fd != INVALID_SOCKET);
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pkbuf = ogs_pkbuf_alloc(NULL, OGS_MAX_PKT_LEN);
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ogs_assert(pkbuf);
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ogs_pkbuf_put(pkbuf, OGS_MAX_PKT_LEN);
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size = ogs_recvfrom(fd, pkbuf->data, pkbuf->len, 0, &from);
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if (size <= 0) {
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ogs_log_message(OGS_LOG_ERROR, ogs_socket_errno,
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"ogs_recv() failed");
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goto cleanup;
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}
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ogs_pkbuf_trim(pkbuf, size);
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ogs_assert(pkbuf);
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ogs_assert(pkbuf->len);
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gtp_h = (ogs_gtp2_header_t *)pkbuf->data;
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if (gtp_h->version != OGS_GTP2_VERSION_1) {
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ogs_error("[DROP] Invalid GTPU version [%d]", gtp_h->version);
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ogs_log_hexdump(OGS_LOG_ERROR, pkbuf->data, pkbuf->len);
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goto cleanup;
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}
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if (gtp_h->type == OGS_GTPU_MSGTYPE_ECHO_REQ) {
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ogs_pkbuf_t *echo_rsp;
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ogs_debug("[RECV] Echo Request from [%s]", OGS_ADDR(&from, buf));
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echo_rsp = ogs_gtp2_handle_echo_req(pkbuf);
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ogs_expect(echo_rsp);
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if (echo_rsp) {
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ssize_t sent;
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/* Echo reply */
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ogs_debug("[SEND] Echo Response to [%s]", OGS_ADDR(&from, buf));
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sent = ogs_sendto(fd, echo_rsp->data, echo_rsp->len, 0, &from);
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if (sent < 0 || sent != echo_rsp->len) {
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ogs_log_message(OGS_LOG_ERROR, ogs_socket_errno,
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"ogs_sendto() failed");
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}
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ogs_pkbuf_free(echo_rsp);
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}
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goto cleanup;
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}
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teid = be32toh(gtp_h->teid);
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ogs_debug("[RECV] GPU-U Type [%d] from [%s] : TEID[0x%x]",
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gtp_h->type, OGS_ADDR(&from, buf), teid);
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qfi = 0;
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if (gtp_h->flags & OGS_GTPU_FLAGS_E) {
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/*
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* TS29.281
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* 5.2.1 General format of the GTP-U Extension Header
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* Figure 5.2.1-3: Definition of Extension Header Type
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*
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* Note 4 : For a GTP-PDU with several Extension Headers, the PDU
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* Session Container should be the first Extension Header
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*/
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ogs_gtp2_extension_header_t *extension_header =
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(ogs_gtp2_extension_header_t *)(pkbuf->data + OGS_GTPV1U_HEADER_LEN);
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ogs_assert(extension_header);
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if (extension_header->type ==
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OGS_GTP2_EXTENSION_HEADER_TYPE_PDU_SESSION_CONTAINER) {
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if (extension_header->pdu_type ==
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OGS_GTP2_EXTENSION_HEADER_PDU_TYPE_UL_PDU_SESSION_INFORMATION) {
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ogs_debug(" QFI [0x%x]",
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extension_header->qos_flow_identifier);
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qfi = extension_header->qos_flow_identifier;
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}
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}
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}
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/* Remove GTP header and send packets to TUN interface */
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len = ogs_gtpu_header_len(pkbuf);
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if (len < 0) {
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ogs_error("[DROP] Cannot decode GTPU packet");
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ogs_log_hexdump(OGS_LOG_ERROR, pkbuf->data, pkbuf->len);
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goto cleanup;
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}
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if (gtp_h->type != OGS_GTPU_MSGTYPE_END_MARKER &&
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pkbuf->len <= len) {
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ogs_error("[DROP] Small GTPU packet(type:%d len:%d)", gtp_h->type, len);
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ogs_log_hexdump(OGS_LOG_ERROR, pkbuf->data, pkbuf->len);
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goto cleanup;
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}
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ogs_assert(ogs_pkbuf_pull(pkbuf, len));
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if (gtp_h->type == OGS_GTPU_MSGTYPE_GPDU) {
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smf_sess_t *sess = NULL;
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ogs_pfcp_far_t *far = NULL;
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far = ogs_pfcp_far_find_by_teid(teid);
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if (!far) {
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ogs_error("No FAR for TEID [%d]", teid);
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goto cleanup;
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}
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if (far->dst_if != OGS_PFCP_INTERFACE_CP_FUNCTION) {
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ogs_error("Invalid Destination Interface [%d]", far->dst_if);
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goto cleanup;
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}
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if (qfi) {
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ogs_error("QFI[%d] Found", qfi);
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goto cleanup;
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}
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ogs_assert(far->sess);
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sess = SMF_SESS(far->sess);
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ogs_assert(sess);
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if (sess->ipv6 && check_if_router_solicit(pkbuf) == true) {
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struct ip6_hdr *ip6_h = (struct ip6_hdr *)pkbuf->data;
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ogs_assert(ip6_h);
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send_router_advertisement(sess, ip6_h->ip6_src.s6_addr);
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}
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} else {
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ogs_error("[DROP] Invalid GTPU Type [%d]", gtp_h->type);
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ogs_log_hexdump(OGS_LOG_ERROR, pkbuf->data, pkbuf->len);
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}
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cleanup:
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ogs_pkbuf_free(pkbuf);
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}
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int smf_gtp_open(void)
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{
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ogs_socknode_t *node = NULL;
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ogs_sock_t *sock = NULL;
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ogs_list_for_each(&ogs_gtp_self()->gtpc_list, node) {
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sock = ogs_gtp_server(node);
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if (!sock) return OGS_ERROR;
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node->poll = ogs_pollset_add(ogs_app()->pollset,
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OGS_POLLIN, sock->fd, _gtpv1v2_c_recv_cb, sock);
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ogs_assert(node->poll);
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}
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ogs_list_for_each(&ogs_gtp_self()->gtpc_list6, node) {
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sock = ogs_gtp_server(node);
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if (!sock) return OGS_ERROR;
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node->poll = ogs_pollset_add(ogs_app()->pollset,
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OGS_POLLIN, sock->fd, _gtpv1v2_c_recv_cb, sock);
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ogs_assert(node->poll);
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}
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OGS_SETUP_GTPC_SERVER;
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ogs_list_for_each(&ogs_gtp_self()->gtpu_list, node) {
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sock = ogs_gtp_server(node);
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if (!sock) return OGS_ERROR;
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if (sock->family == AF_INET)
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ogs_gtp_self()->gtpu_sock = sock;
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else if (sock->family == AF_INET6)
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ogs_gtp_self()->gtpu_sock6 = sock;
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node->poll = ogs_pollset_add(ogs_app()->pollset,
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OGS_POLLIN, sock->fd, _gtpv1_u_recv_cb, sock);
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ogs_assert(node->poll);
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}
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OGS_SETUP_GTPU_SERVER;
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/* Fetch link-local address for router advertisement */
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if (ogs_gtp_self()->link_local_addr)
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ogs_freeaddrinfo(ogs_gtp_self()->link_local_addr);
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if (ogs_gtp_self()->gtpu_addr6)
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ogs_gtp_self()->link_local_addr =
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ogs_link_local_addr_by_sa(ogs_gtp_self()->gtpu_addr6);
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return OGS_OK;
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}
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void smf_gtp_close(void)
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{
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if (ogs_gtp_self()->link_local_addr)
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ogs_freeaddrinfo(ogs_gtp_self()->link_local_addr);
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ogs_socknode_remove_all(&ogs_gtp_self()->gtpc_list);
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ogs_socknode_remove_all(&ogs_gtp_self()->gtpc_list6);
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ogs_socknode_remove_all(&ogs_gtp_self()->gtpu_list);
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}
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int smf_gtp1_send_create_pdp_context_response(
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smf_sess_t *sess, ogs_gtp_xact_t *xact)
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{
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int rv;
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ogs_gtp1_header_t h;
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ogs_pkbuf_t *pkbuf = NULL;
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ogs_assert(sess);
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ogs_assert(xact);
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memset(&h, 0, sizeof(ogs_gtp1_header_t));
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h.type = OGS_GTP1_CREATE_PDP_CONTEXT_RESPONSE_TYPE;
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h.teid = sess->sgw_s5c_teid;
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pkbuf = smf_gn_build_create_pdp_context_response(h.type, sess);
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ogs_expect_or_return_val(pkbuf, OGS_ERROR);
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rv = ogs_gtp1_xact_update_tx(xact, &h, pkbuf);
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ogs_expect_or_return_val(rv == OGS_OK, OGS_ERROR);
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rv = ogs_gtp_xact_commit(xact);
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ogs_expect(rv == OGS_OK);
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return rv;
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}
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int smf_gtp1_send_delete_pdp_context_response(
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smf_sess_t *sess, ogs_gtp_xact_t *xact)
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{
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int rv;
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ogs_gtp1_header_t h;
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ogs_pkbuf_t *pkbuf = NULL;
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ogs_assert(sess);
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ogs_assert(xact);
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memset(&h, 0, sizeof(ogs_gtp1_header_t));
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h.type = OGS_GTP1_DELETE_PDP_CONTEXT_RESPONSE_TYPE;
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h.teid = sess->sgw_s5c_teid;
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pkbuf = smf_gn_build_delete_pdp_context_response(h.type, sess);
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ogs_expect_or_return_val(pkbuf, OGS_ERROR);
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rv = ogs_gtp1_xact_update_tx(xact, &h, pkbuf);
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ogs_expect_or_return_val(rv == OGS_OK, OGS_ERROR);
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rv = ogs_gtp_xact_commit(xact);
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ogs_expect(rv == OGS_OK);
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return rv;
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}
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#if 0
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int smf_gtp1_send_update_pdp_context_request(
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smf_bearer_t *bearer, uint8_t pti, uint8_t cause_value)
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{
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int rv;
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ogs_gtp_xact_t *xact = NULL;
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ogs_gtp1_header_t h;
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ogs_pkbuf_t *pkbuf = NULL;
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smf_sess_t *sess = NULL;
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ogs_assert(bearer);
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sess = bearer->sess;
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ogs_assert(sess);
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memset(&h, 0, sizeof(ogs_gtp1_header_t));
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h.type = OGS_GTP1_UPDATE_PDP_CONTEXT_REQUEST_TYPE;
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h.teid = sess->sgw_s5c_teid;
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pkbuf = smf_gn_build_update_pdp_context_request(
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h.type, bearer, pti, cause_value);
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ogs_expect_or_return_val(pkbuf, OGS_ERROR);
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xact = ogs_gtp1_xact_local_create(
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sess->gnode, &h, pkbuf, bearer_timeout, bearer);
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ogs_expect_or_return_val(xact, OGS_ERROR);
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rv = ogs_gtp_xact_commit(xact);
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ogs_expect(rv == OGS_OK);
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return rv;
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}
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#endif
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int smf_gtp1_send_update_pdp_context_response(
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smf_bearer_t *bearer, ogs_gtp_xact_t *xact)
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{
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int rv;
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ogs_gtp1_header_t h;
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ogs_pkbuf_t *pkbuf = NULL;
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smf_sess_t *sess = NULL;
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ogs_assert(bearer);
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ogs_assert(xact);
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sess = bearer->sess;
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ogs_assert(sess);
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memset(&h, 0, sizeof(ogs_gtp1_header_t));
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h.type = OGS_GTP1_UPDATE_PDP_CONTEXT_RESPONSE_TYPE;
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h.teid = sess->sgw_s5c_teid;
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pkbuf = smf_gn_build_update_pdp_context_response(
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h.type, sess, bearer);
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ogs_expect_or_return_val(pkbuf, OGS_ERROR);
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rv = ogs_gtp1_xact_update_tx(xact, &h, pkbuf);
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ogs_expect_or_return_val(rv == OGS_OK, OGS_ERROR);
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rv = ogs_gtp_xact_commit(xact);
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ogs_expect(rv == OGS_OK);
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return rv;
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}
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|
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int smf_gtp2_send_create_session_response(
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smf_sess_t *sess, ogs_gtp_xact_t *xact)
|
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{
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int rv;
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ogs_gtp2_header_t h;
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ogs_pkbuf_t *pkbuf = NULL;
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ogs_assert(sess);
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ogs_assert(xact);
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memset(&h, 0, sizeof(ogs_gtp2_header_t));
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h.type = OGS_GTP2_CREATE_SESSION_RESPONSE_TYPE;
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h.teid = sess->sgw_s5c_teid;
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pkbuf = smf_s5c_build_create_session_response(h.type, sess);
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ogs_expect_or_return_val(pkbuf, OGS_ERROR);
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rv = ogs_gtp_xact_update_tx(xact, &h, pkbuf);
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ogs_expect_or_return_val(rv == OGS_OK, OGS_ERROR);
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rv = ogs_gtp_xact_commit(xact);
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ogs_expect(rv == OGS_OK);
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return rv;
|
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}
|
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|
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int smf_gtp2_send_modify_bearer_response(
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smf_sess_t *sess, ogs_gtp_xact_t *xact,
|
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ogs_gtp2_modify_bearer_request_t *req, bool sgw_relocation)
|
|
{
|
|
int rv;
|
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ogs_gtp2_header_t h;
|
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ogs_pkbuf_t *pkbuf = NULL;
|
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|
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ogs_assert(sess);
|
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ogs_assert(xact);
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ogs_assert(req);
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|
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memset(&h, 0, sizeof(ogs_gtp2_header_t));
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h.type = OGS_GTP2_MODIFY_BEARER_RESPONSE_TYPE;
|
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h.teid = sess->sgw_s5c_teid;
|
|
|
|
pkbuf = smf_s5c_build_modify_bearer_response(
|
|
h.type, sess, req, sgw_relocation);
|
|
ogs_expect_or_return_val(pkbuf, OGS_ERROR);
|
|
|
|
rv = ogs_gtp_xact_update_tx(xact, &h, pkbuf);
|
|
ogs_expect_or_return_val(rv == OGS_OK, OGS_ERROR);
|
|
|
|
rv = ogs_gtp_xact_commit(xact);
|
|
ogs_expect(rv == OGS_OK);
|
|
|
|
return rv;
|
|
}
|
|
|
|
int smf_gtp2_send_delete_session_response(
|
|
smf_sess_t *sess, ogs_gtp_xact_t *xact)
|
|
{
|
|
int rv;
|
|
ogs_gtp2_header_t h;
|
|
ogs_pkbuf_t *pkbuf = NULL;
|
|
|
|
ogs_assert(xact);
|
|
ogs_assert(sess);
|
|
|
|
memset(&h, 0, sizeof(ogs_gtp2_header_t));
|
|
h.type = OGS_GTP2_DELETE_SESSION_RESPONSE_TYPE;
|
|
h.teid = sess->sgw_s5c_teid;
|
|
|
|
pkbuf = smf_s5c_build_delete_session_response(h.type, sess);
|
|
ogs_expect_or_return_val(pkbuf, OGS_ERROR);
|
|
|
|
rv = ogs_gtp_xact_update_tx(xact, &h, pkbuf);
|
|
ogs_expect_or_return_val(rv == OGS_OK, OGS_ERROR);
|
|
|
|
rv = ogs_gtp_xact_commit(xact);
|
|
ogs_expect(rv == OGS_OK);
|
|
|
|
return rv;
|
|
}
|
|
|
|
int smf_gtp2_send_delete_bearer_request(
|
|
smf_bearer_t *bearer, uint8_t pti, uint8_t cause_value)
|
|
{
|
|
int rv;
|
|
|
|
ogs_gtp_xact_t *xact = NULL;
|
|
ogs_gtp2_header_t h;
|
|
ogs_pkbuf_t *pkbuf = NULL;
|
|
|
|
smf_sess_t *sess = NULL;
|
|
|
|
ogs_assert(bearer);
|
|
sess = bearer->sess;
|
|
ogs_assert(sess);
|
|
|
|
memset(&h, 0, sizeof(ogs_gtp2_header_t));
|
|
h.type = OGS_GTP2_DELETE_BEARER_REQUEST_TYPE;
|
|
h.teid = sess->sgw_s5c_teid;
|
|
|
|
pkbuf = smf_s5c_build_delete_bearer_request(
|
|
h.type, bearer, pti, cause_value);
|
|
ogs_expect_or_return_val(pkbuf, OGS_ERROR);
|
|
|
|
xact = ogs_gtp_xact_local_create(
|
|
sess->gnode, &h, pkbuf, bearer_timeout, bearer);
|
|
ogs_expect_or_return_val(xact, OGS_ERROR);
|
|
|
|
rv = ogs_gtp_xact_commit(xact);
|
|
ogs_expect(rv == OGS_OK);
|
|
|
|
return rv;
|
|
}
|
|
|
|
static bool check_if_router_solicit(ogs_pkbuf_t *pkbuf)
|
|
{
|
|
struct ip *ip_h = NULL;
|
|
|
|
ogs_assert(pkbuf);
|
|
ogs_assert(pkbuf->len);
|
|
ogs_assert(pkbuf->data);
|
|
|
|
ip_h = (struct ip *)pkbuf->data;
|
|
if (ip_h->ip_v == 6) {
|
|
struct ip6_hdr *ip6_h = (struct ip6_hdr *)pkbuf->data;
|
|
if (ip6_h->ip6_nxt == IPPROTO_ICMPV6) {
|
|
struct icmp6_hdr *icmp_h =
|
|
(struct icmp6_hdr *)(pkbuf->data + sizeof(struct ip6_hdr));
|
|
if (icmp_h->icmp6_type == ND_ROUTER_SOLICIT) {
|
|
ogs_debug(" Router Solict");
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
static void send_router_advertisement(smf_sess_t *sess, uint8_t *ip6_dst)
|
|
{
|
|
int rv;
|
|
|
|
ogs_pkbuf_t *pkbuf = NULL;
|
|
|
|
ogs_pfcp_pdr_t *pdr = NULL;
|
|
ogs_pfcp_ue_ip_t *ue_ip = NULL;
|
|
ogs_pfcp_subnet_t *subnet = NULL;
|
|
char ipstr[OGS_ADDRSTRLEN];
|
|
|
|
ogs_ipsubnet_t src_ipsub;
|
|
uint16_t plen = 0;
|
|
uint8_t nxt = 0;
|
|
uint8_t *p = NULL;
|
|
struct ip6_hdr *ip6_h = NULL;
|
|
struct nd_router_advert *advert_h = NULL;
|
|
struct nd_opt_prefix_info *prefix = NULL;
|
|
|
|
ogs_assert(sess);
|
|
ue_ip = sess->ipv6;
|
|
ogs_assert(ue_ip);
|
|
subnet = ue_ip->subnet;
|
|
ogs_assert(subnet);
|
|
|
|
/* Fetch link-local address for router advertisement */
|
|
if (ogs_gtp_self()->link_local_addr) {
|
|
OGS_ADDR(ogs_gtp_self()->link_local_addr, ipstr);
|
|
rv = ogs_ipsubnet(&src_ipsub, ipstr, NULL);
|
|
ogs_expect_or_return(rv == OGS_OK);
|
|
} else {
|
|
/* For the case of loopback used for GTPU link-local address is not
|
|
* available, hence set the source IP to fe80::1
|
|
*/
|
|
memset(src_ipsub.sub, 0, sizeof(src_ipsub.sub));
|
|
src_ipsub.sub[0] = htobe32(0xfe800000);
|
|
src_ipsub.sub[3] = htobe32(0x00000001);
|
|
}
|
|
|
|
ogs_debug(" Build Router Advertisement");
|
|
|
|
pkbuf = ogs_pkbuf_alloc(NULL, OGS_GTPV1U_5GC_HEADER_LEN+200);
|
|
ogs_assert(pkbuf);
|
|
ogs_pkbuf_reserve(pkbuf, OGS_GTPV1U_5GC_HEADER_LEN);
|
|
ogs_pkbuf_put(pkbuf, 200);
|
|
pkbuf->len = sizeof *ip6_h + sizeof *advert_h + sizeof *prefix;
|
|
memset(pkbuf->data, 0, pkbuf->len);
|
|
|
|
p = (uint8_t *)pkbuf->data;
|
|
ip6_h = (struct ip6_hdr *)p;
|
|
advert_h = (struct nd_router_advert *)((uint8_t *)ip6_h + sizeof *ip6_h);
|
|
prefix = (struct nd_opt_prefix_info *)
|
|
((uint8_t*)advert_h + sizeof *advert_h);
|
|
|
|
advert_h->nd_ra_type = ND_ROUTER_ADVERT;
|
|
advert_h->nd_ra_code = 0;
|
|
advert_h->nd_ra_curhoplimit = 64;
|
|
advert_h->nd_ra_flags_reserved = 0;
|
|
advert_h->nd_ra_router_lifetime = htobe16(64800); /* 64800s */
|
|
advert_h->nd_ra_reachable = 0;
|
|
advert_h->nd_ra_retransmit = 0;
|
|
|
|
prefix->nd_opt_pi_type = ND_OPT_PREFIX_INFORMATION;
|
|
prefix->nd_opt_pi_len = 4; /* 32bytes */
|
|
prefix->nd_opt_pi_prefix_len = OGS_IPV6_DEFAULT_PREFIX_LEN;
|
|
prefix->nd_opt_pi_flags_reserved =
|
|
ND_OPT_PI_FLAG_ONLINK|ND_OPT_PI_FLAG_AUTO;
|
|
prefix->nd_opt_pi_valid_time = htobe32(0xffffffff); /* Infinite */
|
|
prefix->nd_opt_pi_preferred_time = htobe32(0xffffffff); /* Infinite */
|
|
memcpy(prefix->nd_opt_pi_prefix.s6_addr,
|
|
ue_ip->addr, (OGS_IPV6_DEFAULT_PREFIX_LEN >> 3));
|
|
|
|
/* For IPv6 Pseudo-Header */
|
|
plen = htobe16(sizeof *advert_h + sizeof *prefix);
|
|
nxt = IPPROTO_ICMPV6;
|
|
|
|
memcpy(p, src_ipsub.sub, sizeof src_ipsub.sub);
|
|
p += sizeof src_ipsub.sub;
|
|
memcpy(p, ip6_dst, OGS_IPV6_LEN);
|
|
p += OGS_IPV6_LEN;
|
|
p += 2; memcpy(p, &plen, 2); p += 2;
|
|
p += 3; *p = nxt; p += 1;
|
|
advert_h->nd_ra_cksum = ogs_in_cksum((uint16_t *)pkbuf->data, pkbuf->len);
|
|
|
|
ip6_h->ip6_flow = htobe32(0x60000001);
|
|
ip6_h->ip6_plen = plen;
|
|
ip6_h->ip6_nxt = nxt; /* ICMPv6 */
|
|
ip6_h->ip6_hlim = 0xff;
|
|
memcpy(ip6_h->ip6_src.s6_addr, src_ipsub.sub, sizeof src_ipsub.sub);
|
|
memcpy(ip6_h->ip6_dst.s6_addr, ip6_dst, OGS_IPV6_LEN);
|
|
|
|
ogs_list_for_each(&sess->pfcp.pdr_list, pdr) {
|
|
if (pdr->src_if == OGS_PFCP_INTERFACE_CP_FUNCTION && pdr->gnode) {
|
|
ogs_gtp2_header_t gtp_hdesc;
|
|
ogs_gtp2_extension_header_t ext_hdesc;
|
|
ogs_pkbuf_t *newbuf = NULL;
|
|
|
|
memset(>p_hdesc, 0, sizeof(gtp_hdesc));
|
|
memset(&ext_hdesc, 0, sizeof(ext_hdesc));
|
|
|
|
gtp_hdesc.type = OGS_GTPU_MSGTYPE_GPDU;
|
|
gtp_hdesc.teid = pdr->f_teid.teid;
|
|
|
|
newbuf = ogs_pkbuf_copy(pkbuf);
|
|
ogs_assert(newbuf);
|
|
|
|
ogs_gtp2_send_user_plane(pdr->gnode, >p_hdesc, &ext_hdesc, newbuf);
|
|
|
|
ogs_debug(" Send Router Advertisement");
|
|
break;
|
|
}
|
|
}
|
|
|
|
ogs_pkbuf_free(pkbuf);
|
|
}
|
|
|
|
static void bearer_timeout(ogs_gtp_xact_t *xact, void *data)
|
|
{
|
|
smf_bearer_t *bearer = data;
|
|
smf_sess_t *sess = NULL;
|
|
smf_ue_t *smf_ue = NULL;
|
|
uint8_t type = 0;
|
|
|
|
ogs_assert(bearer);
|
|
sess = bearer->sess;
|
|
ogs_assert(sess);
|
|
smf_ue = sess->smf_ue;
|
|
ogs_assert(smf_ue);
|
|
|
|
type = xact->seq[0].type;
|
|
|
|
switch (type) {
|
|
case OGS_GTP2_DELETE_BEARER_REQUEST_TYPE:
|
|
ogs_error("[%s] No Delete Bearer Response", smf_ue->imsi_bcd);
|
|
if (!smf_bearer_cycle(bearer)) {
|
|
ogs_warn("[%s] Bearer has already been removed", smf_ue->imsi_bcd);
|
|
break;
|
|
}
|
|
|
|
ogs_assert(OGS_OK ==
|
|
smf_epc_pfcp_send_one_bearer_modification_request(
|
|
bearer, NULL, OGS_PFCP_MODIFY_REMOVE,
|
|
OGS_NAS_PROCEDURE_TRANSACTION_IDENTITY_UNASSIGNED,
|
|
OGS_GTP2_CAUSE_UNDEFINED_VALUE));
|
|
break;
|
|
default:
|
|
ogs_error("GTP Timeout : IMSI[%s] Message-Type[%d]",
|
|
smf_ue->imsi_bcd, type);
|
|
break;
|
|
}
|
|
}
|