forked from acouzens/open5gs
555 lines
15 KiB
C
555 lines
15 KiB
C
/*
|
|
* Copyright (C) 2019-2024 by Sukchan Lee <acetcom@gmail.com>
|
|
*
|
|
* This file is part of Open5GS.
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Affero General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <https://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "ogs-pfcp.h"
|
|
|
|
ogs_sock_t *ogs_pfcp_server(ogs_socknode_t *node)
|
|
{
|
|
char buf[OGS_ADDRSTRLEN];
|
|
ogs_sock_t *pfcp;
|
|
ogs_assert(node);
|
|
|
|
pfcp = ogs_udp_server(node->addr, node->option);
|
|
if (pfcp) {
|
|
ogs_info("pfcp_server() [%s]:%d",
|
|
OGS_ADDR(node->addr, buf), OGS_PORT(node->addr));
|
|
|
|
node->sock = pfcp;
|
|
}
|
|
|
|
return pfcp;
|
|
}
|
|
|
|
int ogs_pfcp_connect(
|
|
ogs_sock_t *ipv4, ogs_sock_t *ipv6, ogs_pfcp_node_t *node)
|
|
{
|
|
ogs_sockaddr_t *addr;
|
|
char buf[OGS_ADDRSTRLEN];
|
|
|
|
ogs_assert(ipv4 || ipv6);
|
|
ogs_assert(node);
|
|
ogs_assert(node->sa_list);
|
|
|
|
addr = node->sa_list;
|
|
while (addr) {
|
|
ogs_sock_t *sock = NULL;
|
|
|
|
if (addr->ogs_sa_family == AF_INET)
|
|
sock = ipv4;
|
|
else if (addr->ogs_sa_family == AF_INET6)
|
|
sock = ipv6;
|
|
else
|
|
ogs_assert_if_reached();
|
|
|
|
if (sock) {
|
|
ogs_info("ogs_pfcp_connect() [%s]:%d",
|
|
OGS_ADDR(addr, buf), OGS_PORT(addr));
|
|
|
|
node->sock = sock;
|
|
memcpy(&node->addr, addr, sizeof node->addr);
|
|
break;
|
|
}
|
|
|
|
addr = addr->next;
|
|
}
|
|
|
|
if (addr == NULL) {
|
|
ogs_error("ogs_pfcp_connect() [%s]:%d failed",
|
|
OGS_ADDR(node->sa_list, buf), OGS_PORT(node->sa_list));
|
|
ogs_error("Please check the IP version between SMF and UPF nodes.");
|
|
return OGS_ERROR;
|
|
}
|
|
|
|
return OGS_OK;
|
|
}
|
|
|
|
int ogs_pfcp_send(ogs_pfcp_node_t *node, ogs_pkbuf_t *pkbuf)
|
|
{
|
|
ssize_t sent;
|
|
ogs_sock_t *sock = NULL;
|
|
|
|
ogs_assert(node);
|
|
ogs_assert(pkbuf);
|
|
sock = node->sock;
|
|
ogs_assert(sock);
|
|
|
|
sent = ogs_send(sock->fd, pkbuf->data, pkbuf->len, 0);
|
|
if (sent < 0 || sent != pkbuf->len) {
|
|
ogs_log_message(OGS_LOG_ERROR, ogs_socket_errno,
|
|
"ogs_pfcp_send() failed");
|
|
return OGS_ERROR;
|
|
}
|
|
|
|
return OGS_OK;
|
|
}
|
|
|
|
int ogs_pfcp_sendto(ogs_pfcp_node_t *node, ogs_pkbuf_t *pkbuf)
|
|
{
|
|
ssize_t sent;
|
|
ogs_sock_t *sock = NULL;
|
|
ogs_sockaddr_t *addr = NULL;
|
|
|
|
ogs_assert(node);
|
|
ogs_assert(pkbuf);
|
|
sock = node->sock;
|
|
ogs_assert(sock);
|
|
addr = &node->addr;
|
|
ogs_assert(addr);
|
|
|
|
sent = ogs_sendto(sock->fd, pkbuf->data, pkbuf->len, 0, addr);
|
|
if (sent < 0 || sent != pkbuf->len) {
|
|
if (ogs_socket_errno != OGS_EAGAIN) {
|
|
char buf[OGS_ADDRSTRLEN];
|
|
int err = ogs_socket_errno;
|
|
ogs_log_message(OGS_LOG_ERROR, err,
|
|
"ogs_sendto(%u, %p, %u, 0, %s:%u) failed",
|
|
sock->fd, pkbuf->data, pkbuf->len,
|
|
OGS_ADDR(addr, buf), OGS_PORT(addr));
|
|
}
|
|
return OGS_ERROR;
|
|
}
|
|
|
|
return OGS_OK;
|
|
}
|
|
|
|
int ogs_pfcp_send_heartbeat_request(ogs_pfcp_node_t *node,
|
|
void (*cb)(ogs_pfcp_xact_t *xact, void *data))
|
|
{
|
|
int rv;
|
|
ogs_pkbuf_t *pkbuf = NULL;
|
|
ogs_pfcp_header_t h;
|
|
ogs_pfcp_xact_t *xact = NULL;
|
|
|
|
ogs_assert(node);
|
|
|
|
memset(&h, 0, sizeof(ogs_pfcp_header_t));
|
|
h.type = OGS_PFCP_HEARTBEAT_REQUEST_TYPE;
|
|
h.seid_presence = OGS_PFCP_SEID_NO_PRESENCE;
|
|
|
|
xact = ogs_pfcp_xact_local_create(node, cb, node);
|
|
if (!xact) {
|
|
ogs_error("ogs_pfcp_xact_local_create() failed");
|
|
return OGS_ERROR;
|
|
}
|
|
|
|
pkbuf = ogs_pfcp_build_heartbeat_request(h.type);
|
|
if (!pkbuf) {
|
|
ogs_error("ogs_pfcp_build_heartbeat_request() failed");
|
|
return OGS_ERROR;
|
|
}
|
|
|
|
rv = ogs_pfcp_xact_update_tx(xact, &h, pkbuf);
|
|
if (rv != OGS_OK) {
|
|
ogs_error("ogs_pfcp_xact_update_tx() failed");
|
|
return OGS_ERROR;
|
|
}
|
|
|
|
rv = ogs_pfcp_xact_commit(xact);
|
|
ogs_expect(rv == OGS_OK);
|
|
|
|
return rv;
|
|
}
|
|
|
|
int ogs_pfcp_send_heartbeat_response(ogs_pfcp_xact_t *xact)
|
|
{
|
|
int rv;
|
|
ogs_pkbuf_t *pkbuf = NULL;
|
|
ogs_pfcp_header_t h;
|
|
|
|
ogs_assert(xact);
|
|
|
|
memset(&h, 0, sizeof(ogs_pfcp_header_t));
|
|
h.type = OGS_PFCP_HEARTBEAT_RESPONSE_TYPE;
|
|
h.seid_presence = OGS_PFCP_SEID_NO_PRESENCE;
|
|
|
|
pkbuf = ogs_pfcp_build_heartbeat_response(h.type);
|
|
if (!pkbuf) {
|
|
ogs_error("ogs_pfcp_build_heartbeat_response() failed");
|
|
return OGS_ERROR;
|
|
}
|
|
|
|
rv = ogs_pfcp_xact_update_tx(xact, &h, pkbuf);
|
|
if (rv != OGS_OK) {
|
|
ogs_error("ogs_pfcp_xact_update_tx() failed");
|
|
return OGS_ERROR;
|
|
}
|
|
|
|
rv = ogs_pfcp_xact_commit(xact);
|
|
ogs_expect(rv == OGS_OK);
|
|
|
|
/*
|
|
* Force delete the PFCP transaction to check the PFCP recovery timestamp.
|
|
*
|
|
* Otherwise, duplicated request (lib/pfcp/xact.c:384) prevents the message
|
|
* from being passed to the state machine, so the PFCP recovery timestamp
|
|
* cannot be delivered in the handler routine.
|
|
*/
|
|
ogs_pfcp_xact_delete(xact);
|
|
|
|
return rv;
|
|
}
|
|
|
|
int ogs_pfcp_cp_send_association_setup_request(ogs_pfcp_node_t *node,
|
|
void (*cb)(ogs_pfcp_xact_t *xact, void *data))
|
|
{
|
|
int rv;
|
|
ogs_pkbuf_t *pkbuf = NULL;
|
|
ogs_pfcp_header_t h;
|
|
ogs_pfcp_xact_t *xact = NULL;
|
|
|
|
ogs_assert(node);
|
|
|
|
memset(&h, 0, sizeof(ogs_pfcp_header_t));
|
|
h.type = OGS_PFCP_ASSOCIATION_SETUP_REQUEST_TYPE;
|
|
h.seid_presence = OGS_PFCP_SEID_NO_PRESENCE;
|
|
|
|
xact = ogs_pfcp_xact_local_create(node, cb, node);
|
|
if (!xact) {
|
|
ogs_error("ogs_pfcp_xact_local_create() failed");
|
|
return OGS_ERROR;
|
|
}
|
|
|
|
pkbuf = ogs_pfcp_cp_build_association_setup_request(h.type);
|
|
if (!pkbuf) {
|
|
ogs_error("ogs_pfcp_cp_build_association_setup_request() failed");
|
|
return OGS_ERROR;
|
|
}
|
|
|
|
rv = ogs_pfcp_xact_update_tx(xact, &h, pkbuf);
|
|
if (rv != OGS_OK) {
|
|
ogs_error("ogs_pfcp_xact_update_tx() failed");
|
|
return OGS_ERROR;
|
|
}
|
|
|
|
rv = ogs_pfcp_xact_commit(xact);
|
|
ogs_expect(rv == OGS_OK);
|
|
|
|
return rv;
|
|
}
|
|
|
|
int ogs_pfcp_cp_send_association_setup_response(ogs_pfcp_xact_t *xact,
|
|
uint8_t cause)
|
|
{
|
|
int rv;
|
|
ogs_pkbuf_t *pkbuf = NULL;
|
|
ogs_pfcp_header_t h;
|
|
|
|
ogs_assert(xact);
|
|
|
|
memset(&h, 0, sizeof(ogs_pfcp_header_t));
|
|
h.type = OGS_PFCP_ASSOCIATION_SETUP_RESPONSE_TYPE;
|
|
h.seid_presence = OGS_PFCP_SEID_NO_PRESENCE;
|
|
|
|
pkbuf = ogs_pfcp_cp_build_association_setup_response(h.type, cause);
|
|
if (!pkbuf) {
|
|
ogs_error("ogs_pfcp_cp_build_association_setup_response() failed");
|
|
return OGS_ERROR;
|
|
}
|
|
|
|
rv = ogs_pfcp_xact_update_tx(xact, &h, pkbuf);
|
|
if (rv != OGS_OK) {
|
|
ogs_error("ogs_pfcp_xact_update_tx() failed");
|
|
return OGS_ERROR;
|
|
}
|
|
|
|
rv = ogs_pfcp_xact_commit(xact);
|
|
ogs_expect(rv == OGS_OK);
|
|
|
|
return rv;
|
|
}
|
|
|
|
int ogs_pfcp_up_send_association_setup_request(ogs_pfcp_node_t *node,
|
|
void (*cb)(ogs_pfcp_xact_t *xact, void *data))
|
|
{
|
|
int rv;
|
|
ogs_pkbuf_t *pkbuf = NULL;
|
|
ogs_pfcp_header_t h;
|
|
ogs_pfcp_xact_t *xact = NULL;
|
|
|
|
ogs_assert(node);
|
|
|
|
memset(&h, 0, sizeof(ogs_pfcp_header_t));
|
|
h.type = OGS_PFCP_ASSOCIATION_SETUP_REQUEST_TYPE;
|
|
h.seid_presence = OGS_PFCP_SEID_NO_PRESENCE;
|
|
|
|
xact = ogs_pfcp_xact_local_create(node, cb, node);
|
|
if (!xact) {
|
|
ogs_error("ogs_pfcp_xact_local_create() failed");
|
|
return OGS_ERROR;
|
|
}
|
|
|
|
pkbuf = ogs_pfcp_up_build_association_setup_request(h.type);
|
|
if (!pkbuf) {
|
|
ogs_error("ogs_pfcp_build_heartbeat_request() failed");
|
|
return OGS_ERROR;
|
|
}
|
|
|
|
rv = ogs_pfcp_xact_update_tx(xact, &h, pkbuf);
|
|
if (rv != OGS_OK) {
|
|
ogs_error("ogs_pfcp_xact_update_tx() failed");
|
|
return OGS_ERROR;
|
|
}
|
|
|
|
rv = ogs_pfcp_xact_commit(xact);
|
|
ogs_expect(rv == OGS_OK);
|
|
|
|
return rv;
|
|
}
|
|
|
|
int ogs_pfcp_up_send_association_setup_response(ogs_pfcp_xact_t *xact,
|
|
uint8_t cause)
|
|
{
|
|
int rv;
|
|
ogs_pkbuf_t *pkbuf = NULL;
|
|
ogs_pfcp_header_t h;
|
|
|
|
ogs_assert(xact);
|
|
|
|
memset(&h, 0, sizeof(ogs_pfcp_header_t));
|
|
h.type = OGS_PFCP_ASSOCIATION_SETUP_RESPONSE_TYPE;
|
|
h.seid_presence = OGS_PFCP_SEID_NO_PRESENCE;
|
|
|
|
pkbuf = ogs_pfcp_up_build_association_setup_response(h.type, cause);
|
|
if (!pkbuf) {
|
|
ogs_error("ogs_pfcp_up_build_association_setup_response() failed");
|
|
return OGS_ERROR;
|
|
}
|
|
|
|
rv = ogs_pfcp_xact_update_tx(xact, &h, pkbuf);
|
|
if (rv != OGS_OK) {
|
|
ogs_error("ogs_pfcp_xact_update_tx() failed");
|
|
return OGS_ERROR;
|
|
}
|
|
|
|
rv = ogs_pfcp_xact_commit(xact);
|
|
ogs_expect(rv == OGS_OK);
|
|
|
|
return rv;
|
|
}
|
|
|
|
void ogs_pfcp_send_g_pdu(
|
|
ogs_pfcp_pdr_t *pdr,
|
|
ogs_gtp2_header_desc_t *sendhdr, ogs_pkbuf_t *sendbuf)
|
|
{
|
|
ogs_gtp_node_t *gnode = NULL;
|
|
ogs_pfcp_far_t *far = NULL;
|
|
|
|
ogs_gtp2_header_desc_t header_desc;
|
|
|
|
ogs_assert(pdr);
|
|
ogs_assert(sendhdr);
|
|
ogs_assert(sendbuf);
|
|
|
|
far = pdr->far;
|
|
if (!far) {
|
|
ogs_error("No FAR");
|
|
ogs_pkbuf_free(sendbuf);
|
|
return;
|
|
}
|
|
|
|
if (far->dst_if == OGS_PFCP_INTERFACE_UNKNOWN) {
|
|
ogs_error("No Destination Interface");
|
|
ogs_pkbuf_free(sendbuf);
|
|
return;
|
|
}
|
|
|
|
gnode = far->gnode;
|
|
ogs_assert(gnode);
|
|
ogs_assert(gnode->sock);
|
|
|
|
memset(&header_desc, 0, sizeof(header_desc));
|
|
|
|
header_desc.type = sendhdr->type;
|
|
header_desc.teid = far->outer_header_creation.teid;
|
|
|
|
if (pdr->qer && pdr->qer->qfi) {
|
|
header_desc.pdu_type =
|
|
OGS_GTP2_EXTENSION_HEADER_PDU_TYPE_DL_PDU_SESSION_INFORMATION;
|
|
header_desc.qos_flow_identifier = pdr->qer->qfi;
|
|
}
|
|
|
|
if (sendhdr->udp.presence == true) {
|
|
header_desc.udp.presence = sendhdr->udp.presence;
|
|
header_desc.udp.port = sendhdr->udp.port;
|
|
}
|
|
|
|
if (sendhdr->pdcp_number_presence == true) {
|
|
header_desc.pdcp_number_presence = sendhdr->pdcp_number_presence;
|
|
header_desc.pdcp_number = sendhdr->pdcp_number;
|
|
}
|
|
|
|
ogs_gtp2_send_user_plane(gnode, &header_desc, sendbuf);
|
|
}
|
|
|
|
int ogs_pfcp_send_end_marker(ogs_pfcp_pdr_t *pdr)
|
|
{
|
|
ogs_gtp_node_t *gnode = NULL;
|
|
ogs_pfcp_far_t *far = NULL;
|
|
|
|
ogs_pkbuf_t *sendbuf = NULL;
|
|
|
|
ogs_gtp2_header_desc_t header_desc;
|
|
|
|
ogs_assert(pdr);
|
|
far = pdr->far;
|
|
ogs_assert(far);
|
|
|
|
gnode = far->gnode;
|
|
if (!gnode) {
|
|
ogs_error("No GTP Node Setup");
|
|
return OGS_DONE;
|
|
}
|
|
if (!gnode->sock) {
|
|
ogs_error("No GTP Socket Setup");
|
|
return OGS_DONE;
|
|
}
|
|
|
|
sendbuf = ogs_pkbuf_alloc(NULL, OGS_GTPV1U_5GC_HEADER_LEN);
|
|
if (!sendbuf) {
|
|
ogs_error("ogs_pkbuf_alloc() failed");
|
|
return OGS_ERROR;
|
|
}
|
|
ogs_pkbuf_reserve(sendbuf, OGS_GTPV1U_5GC_HEADER_LEN);
|
|
|
|
memset(&header_desc, 0, sizeof(header_desc));
|
|
|
|
header_desc.type = OGS_GTPU_MSGTYPE_END_MARKER;
|
|
header_desc.teid = far->outer_header_creation.teid;
|
|
|
|
if (pdr->qer && pdr->qer->qfi) {
|
|
header_desc.pdu_type =
|
|
OGS_GTP2_EXTENSION_HEADER_PDU_TYPE_DL_PDU_SESSION_INFORMATION;
|
|
header_desc.qos_flow_identifier = pdr->qer->qfi;
|
|
}
|
|
|
|
ogs_gtp2_send_user_plane(gnode, &header_desc, sendbuf);
|
|
|
|
return OGS_OK;
|
|
}
|
|
|
|
void ogs_pfcp_send_buffered_packet(ogs_pfcp_pdr_t *pdr)
|
|
{
|
|
ogs_pfcp_far_t *far = NULL;
|
|
int i;
|
|
|
|
ogs_assert(pdr);
|
|
far = pdr->far;
|
|
|
|
if (far && far->gnode) {
|
|
if (far->apply_action & OGS_PFCP_APPLY_ACTION_FORW) {
|
|
for (i = 0; i < far->num_of_buffered_packet; i++) {
|
|
ogs_gtp2_header_desc_t sendhdr;
|
|
|
|
memset(&sendhdr, 0, sizeof(sendhdr));
|
|
sendhdr.type = OGS_GTPU_MSGTYPE_GPDU;
|
|
|
|
ogs_pfcp_send_g_pdu(
|
|
pdr, &sendhdr, far->buffered_packet[i]);
|
|
}
|
|
far->num_of_buffered_packet = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
void ogs_pfcp_send_error_message(
|
|
ogs_pfcp_xact_t *xact, int seid_presence, uint64_t seid, uint8_t type,
|
|
uint8_t cause_value, uint16_t offending_ie_value)
|
|
{
|
|
int rv;
|
|
ogs_pfcp_message_t errmsg;
|
|
ogs_pfcp_tlv_cause_t *cause = NULL;
|
|
ogs_pfcp_tlv_offending_ie_t *offending_ie = NULL;
|
|
ogs_pkbuf_t *pkbuf = NULL;
|
|
|
|
ogs_assert(xact);
|
|
|
|
memset(&errmsg, 0, sizeof(ogs_pfcp_message_t));
|
|
errmsg.h.seid_presence = seid_presence;
|
|
errmsg.h.seid = seid;
|
|
errmsg.h.type = type;
|
|
|
|
switch (type) {
|
|
case OGS_PFCP_PFD_MANAGEMENT_RESPONSE_TYPE:
|
|
cause = &errmsg.pfcp_pfd_management_response.cause;
|
|
offending_ie = &errmsg.pfcp_pfd_management_response.offending_ie;
|
|
break;
|
|
case OGS_PFCP_ASSOCIATION_SETUP_RESPONSE_TYPE:
|
|
cause = &errmsg.pfcp_association_setup_response.cause;
|
|
break;
|
|
case OGS_PFCP_ASSOCIATION_UPDATE_RESPONSE_TYPE:
|
|
cause = &errmsg.pfcp_association_update_response.cause;
|
|
break;
|
|
case OGS_PFCP_ASSOCIATION_RELEASE_RESPONSE_TYPE:
|
|
cause = &errmsg.pfcp_association_release_response.cause;
|
|
break;
|
|
case OGS_PFCP_NODE_REPORT_RESPONSE_TYPE:
|
|
cause = &errmsg.pfcp_node_report_response.cause;
|
|
offending_ie = &errmsg.pfcp_node_report_response.offending_ie;
|
|
break;
|
|
case OGS_PFCP_SESSION_SET_DELETION_RESPONSE_TYPE:
|
|
cause = &errmsg.pfcp_session_set_deletion_response.cause;
|
|
offending_ie = &errmsg.pfcp_session_set_deletion_response.offending_ie;
|
|
break;
|
|
case OGS_PFCP_SESSION_ESTABLISHMENT_RESPONSE_TYPE:
|
|
cause = &errmsg.pfcp_session_establishment_response.cause;
|
|
offending_ie = &errmsg.pfcp_session_establishment_response.offending_ie;
|
|
break;
|
|
case OGS_PFCP_SESSION_MODIFICATION_RESPONSE_TYPE:
|
|
cause = &errmsg.pfcp_session_modification_response.cause;
|
|
offending_ie = &errmsg.pfcp_session_modification_response.offending_ie;
|
|
break;
|
|
case OGS_PFCP_SESSION_DELETION_RESPONSE_TYPE:
|
|
cause = &errmsg.pfcp_session_deletion_response.cause;
|
|
offending_ie = &errmsg.pfcp_session_deletion_response.offending_ie;
|
|
break;
|
|
case OGS_PFCP_SESSION_REPORT_RESPONSE_TYPE:
|
|
cause = &errmsg.pfcp_session_report_response.cause;
|
|
offending_ie = &errmsg.pfcp_session_report_response.offending_ie;
|
|
break;
|
|
default:
|
|
ogs_assert_if_reached();
|
|
return;
|
|
}
|
|
|
|
ogs_assert(cause);
|
|
|
|
cause->presence = 1;
|
|
cause->u8 = cause_value;
|
|
|
|
if (offending_ie && offending_ie_value) {
|
|
offending_ie->presence = 1;
|
|
offending_ie->u16 = offending_ie_value;
|
|
}
|
|
|
|
pkbuf = ogs_pfcp_build_msg(&errmsg);
|
|
if (!pkbuf) {
|
|
ogs_error("ogs_pfcp_build_msg() failed");
|
|
return;
|
|
}
|
|
|
|
rv = ogs_pfcp_xact_update_tx(xact, &errmsg.h, pkbuf);
|
|
if (rv != OGS_OK) {
|
|
ogs_error("ogs_pfcp_xact_update_tx() failed");
|
|
return;
|
|
}
|
|
|
|
rv = ogs_pfcp_xact_commit(xact);
|
|
ogs_expect(rv == OGS_OK);
|
|
}
|