2020-08-13 00:31:22 +00:00
|
|
|
/*
|
|
|
|
* Copyright (C) 2019 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 "pfcp-path.h"
|
|
|
|
|
|
|
|
static void pfcp_node_fsm_init(ogs_pfcp_node_t *node, bool try_to_assoicate)
|
|
|
|
{
|
|
|
|
sgwc_event_t e;
|
|
|
|
|
|
|
|
ogs_assert(node);
|
|
|
|
|
|
|
|
memset(&e, 0, sizeof(e));
|
|
|
|
e.pfcp_node = node;
|
|
|
|
|
|
|
|
if (try_to_assoicate == true) {
|
2020-08-26 03:05:01 +00:00
|
|
|
node->t_association = ogs_timer_add(ogs_app()->timer_mgr,
|
2020-08-13 00:31:22 +00:00
|
|
|
sgwc_timer_pfcp_association, node);
|
|
|
|
ogs_assert(node->t_association);
|
|
|
|
}
|
|
|
|
|
|
|
|
ogs_fsm_create(&node->sm, sgwc_pfcp_state_initial, sgwc_pfcp_state_final);
|
|
|
|
ogs_fsm_init(&node->sm, &e);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void pfcp_node_fsm_fini(ogs_pfcp_node_t *node)
|
|
|
|
{
|
|
|
|
sgwc_event_t e;
|
|
|
|
|
|
|
|
ogs_assert(node);
|
|
|
|
|
|
|
|
memset(&e, 0, sizeof(e));
|
|
|
|
e.pfcp_node = node;
|
|
|
|
|
|
|
|
ogs_fsm_fini(&node->sm, &e);
|
|
|
|
ogs_fsm_delete(&node->sm);
|
|
|
|
|
|
|
|
if (node->t_association)
|
|
|
|
ogs_timer_delete(node->t_association);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void pfcp_recv_cb(short when, ogs_socket_t fd, void *data)
|
|
|
|
{
|
|
|
|
int rv;
|
|
|
|
|
|
|
|
ssize_t size;
|
|
|
|
sgwc_event_t *e = NULL;
|
|
|
|
ogs_pkbuf_t *pkbuf = NULL;
|
|
|
|
ogs_sockaddr_t from;
|
|
|
|
ogs_pfcp_node_t *node = NULL;
|
|
|
|
ogs_pfcp_header_t *h = NULL;
|
|
|
|
|
|
|
|
ogs_assert(fd != INVALID_SOCKET);
|
|
|
|
|
|
|
|
pkbuf = ogs_pkbuf_alloc(NULL, OGS_MAX_SDU_LEN);
|
2020-09-07 03:53:38 +00:00
|
|
|
ogs_assert(pkbuf);
|
2020-08-13 00:31:22 +00:00
|
|
|
ogs_pkbuf_put(pkbuf, OGS_MAX_SDU_LEN);
|
|
|
|
|
|
|
|
size = ogs_recvfrom(fd, pkbuf->data, pkbuf->len, 0, &from);
|
|
|
|
if (size <= 0) {
|
|
|
|
ogs_log_message(OGS_LOG_ERROR, ogs_socket_errno,
|
|
|
|
"ogs_recvfrom() failed");
|
|
|
|
ogs_pkbuf_free(pkbuf);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
ogs_pkbuf_trim(pkbuf, size);
|
|
|
|
|
|
|
|
h = (ogs_pfcp_header_t *)pkbuf->data;
|
|
|
|
if (h->version > OGS_PFCP_VERSION) {
|
|
|
|
ogs_pfcp_header_t rsp;
|
|
|
|
|
|
|
|
ogs_error("Not supported version[%d]", h->version);
|
|
|
|
|
|
|
|
memset(&rsp, 0, sizeof rsp);
|
|
|
|
rsp.flags = (OGS_PFCP_VERSION << 5);
|
|
|
|
rsp.type = OGS_PFCP_VERSION_NOT_SUPPORTED_RESPONSE_TYPE;
|
|
|
|
rsp.length = htobe16(4);
|
|
|
|
rsp.sqn_only = h->sqn_only;
|
2020-09-19 01:46:49 +00:00
|
|
|
if (ogs_sendto(fd, &rsp, 8, 0, &from) < 0) {
|
|
|
|
ogs_log_message(OGS_LOG_ERROR, ogs_socket_errno,
|
|
|
|
"ogs_sendto() failed");
|
|
|
|
}
|
2020-08-13 00:31:22 +00:00
|
|
|
ogs_pkbuf_free(pkbuf);
|
|
|
|
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
e = sgwc_event_new(SGWC_EVT_SXA_MESSAGE);
|
|
|
|
ogs_assert(e);
|
|
|
|
|
2021-03-15 01:01:55 +00:00
|
|
|
node = ogs_pfcp_node_find(&ogs_pfcp_self()->pfcp_peer_list, &from);
|
2020-08-13 00:31:22 +00:00
|
|
|
if (!node) {
|
2021-03-15 01:01:55 +00:00
|
|
|
node = ogs_pfcp_node_add(&ogs_pfcp_self()->pfcp_peer_list, &from);
|
2020-08-13 00:31:22 +00:00
|
|
|
ogs_assert(node);
|
|
|
|
|
|
|
|
node->sock = data;
|
|
|
|
pfcp_node_fsm_init(node, false);
|
|
|
|
}
|
|
|
|
e->pfcp_node = node;
|
|
|
|
e->pkbuf = pkbuf;
|
|
|
|
|
2020-08-26 03:05:01 +00:00
|
|
|
rv = ogs_queue_push(ogs_app()->queue, e);
|
2020-08-13 00:31:22 +00:00
|
|
|
if (rv != OGS_OK) {
|
|
|
|
ogs_warn("ogs_queue_push() failed:%d", (int)rv);
|
|
|
|
ogs_pkbuf_free(e->pkbuf);
|
|
|
|
sgwc_event_free(e);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
int sgwc_pfcp_open(void)
|
|
|
|
{
|
|
|
|
ogs_socknode_t *node = NULL;
|
|
|
|
ogs_sock_t *sock = NULL;
|
|
|
|
|
|
|
|
/* PFCP Server */
|
|
|
|
ogs_list_for_each(&ogs_pfcp_self()->pfcp_list, node) {
|
|
|
|
sock = ogs_pfcp_server(node);
|
2021-04-21 08:24:17 +00:00
|
|
|
if (!sock) return OGS_ERROR;
|
2020-08-13 00:31:22 +00:00
|
|
|
|
2020-08-26 03:05:01 +00:00
|
|
|
node->poll = ogs_pollset_add(ogs_app()->pollset,
|
2020-08-13 00:31:22 +00:00
|
|
|
OGS_POLLIN, sock->fd, pfcp_recv_cb, sock);
|
2021-04-21 08:24:17 +00:00
|
|
|
ogs_assert(node->poll);
|
2020-08-13 00:31:22 +00:00
|
|
|
}
|
|
|
|
ogs_list_for_each(&ogs_pfcp_self()->pfcp_list6, node) {
|
|
|
|
sock = ogs_pfcp_server(node);
|
2021-04-21 08:24:17 +00:00
|
|
|
if (!sock) return OGS_ERROR;
|
2020-08-13 00:31:22 +00:00
|
|
|
|
2020-08-26 03:05:01 +00:00
|
|
|
node->poll = ogs_pollset_add(ogs_app()->pollset,
|
2020-08-13 00:31:22 +00:00
|
|
|
OGS_POLLIN, sock->fd, pfcp_recv_cb, sock);
|
2021-04-21 08:24:17 +00:00
|
|
|
ogs_assert(node->poll);
|
2020-08-13 00:31:22 +00:00
|
|
|
}
|
|
|
|
|
2021-03-15 01:01:55 +00:00
|
|
|
OGS_SETUP_PFCP_SERVER;
|
2020-08-13 00:31:22 +00:00
|
|
|
|
|
|
|
return OGS_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
void sgwc_pfcp_close(void)
|
|
|
|
{
|
|
|
|
ogs_pfcp_node_t *pfcp_node = NULL;
|
|
|
|
|
2021-03-15 01:01:55 +00:00
|
|
|
ogs_list_for_each(&ogs_pfcp_self()->pfcp_peer_list, pfcp_node)
|
2020-08-13 00:31:22 +00:00
|
|
|
pfcp_node_fsm_fini(pfcp_node);
|
|
|
|
|
|
|
|
ogs_socknode_remove_all(&ogs_pfcp_self()->pfcp_list);
|
|
|
|
ogs_socknode_remove_all(&ogs_pfcp_self()->pfcp_list6);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void sess_timeout(ogs_pfcp_xact_t *xact, void *data)
|
|
|
|
{
|
|
|
|
uint8_t type;
|
|
|
|
|
|
|
|
ogs_assert(xact);
|
|
|
|
type = xact->seq[0].type;
|
|
|
|
|
|
|
|
switch (type) {
|
|
|
|
case OGS_PFCP_SESSION_ESTABLISHMENT_REQUEST_TYPE:
|
|
|
|
ogs_error("No PFCP session establishment response");
|
|
|
|
break;
|
|
|
|
case OGS_PFCP_SESSION_MODIFICATION_REQUEST_TYPE:
|
|
|
|
ogs_error("No PFCP session modification response");
|
|
|
|
break;
|
|
|
|
case OGS_PFCP_SESSION_DELETION_REQUEST_TYPE:
|
|
|
|
ogs_error("No PFCP session deletion response");
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
ogs_error("Not implemented [type:%d]", type);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2021-01-23 03:17:01 +00:00
|
|
|
static void bearer_timeout(ogs_pfcp_xact_t *xact, void *data)
|
|
|
|
{
|
|
|
|
uint8_t type;
|
|
|
|
|
|
|
|
ogs_assert(xact);
|
|
|
|
type = xact->seq[0].type;
|
|
|
|
|
|
|
|
switch (type) {
|
|
|
|
case OGS_PFCP_SESSION_MODIFICATION_REQUEST_TYPE:
|
|
|
|
ogs_error("No PFCP session modification response");
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
ogs_error("Not implemented [type:%d]", type);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2020-08-13 00:31:22 +00:00
|
|
|
void sgwc_pfcp_send_session_establishment_request(
|
|
|
|
sgwc_sess_t *sess, ogs_gtp_xact_t *gtp_xact, ogs_pkbuf_t *gtpbuf)
|
|
|
|
{
|
|
|
|
int rv;
|
|
|
|
ogs_pkbuf_t *sxabuf = NULL;
|
|
|
|
ogs_pfcp_header_t h;
|
|
|
|
ogs_pfcp_xact_t *xact = NULL;
|
|
|
|
|
|
|
|
ogs_assert(sess);
|
|
|
|
|
|
|
|
memset(&h, 0, sizeof(ogs_pfcp_header_t));
|
|
|
|
h.type = OGS_PFCP_SESSION_ESTABLISHMENT_REQUEST_TYPE;
|
|
|
|
h.seid = sess->sgwu_sxa_seid;
|
|
|
|
|
|
|
|
sxabuf = sgwc_sxa_build_session_establishment_request(h.type, sess);
|
|
|
|
ogs_expect_or_return(sxabuf);
|
|
|
|
|
|
|
|
xact = ogs_pfcp_xact_local_create(
|
|
|
|
sess->pfcp_node, &h, sxabuf, sess_timeout, sess);
|
|
|
|
ogs_expect_or_return(xact);
|
|
|
|
xact->assoc_xact = gtp_xact;
|
2020-09-18 18:53:23 +00:00
|
|
|
if (gtpbuf) {
|
2020-08-13 00:31:22 +00:00
|
|
|
xact->gtpbuf = ogs_pkbuf_copy(gtpbuf);
|
2020-09-18 18:53:23 +00:00
|
|
|
ogs_assert(xact->gtpbuf);
|
|
|
|
}
|
2020-08-13 00:31:22 +00:00
|
|
|
|
|
|
|
rv = ogs_pfcp_xact_commit(xact);
|
|
|
|
ogs_expect(rv == OGS_OK);
|
|
|
|
}
|
|
|
|
|
|
|
|
void sgwc_pfcp_send_sess_modification_request(
|
|
|
|
sgwc_sess_t *sess, ogs_gtp_xact_t *gtp_xact,
|
|
|
|
ogs_pkbuf_t *gtpbuf, uint64_t flags)
|
|
|
|
{
|
|
|
|
int rv;
|
|
|
|
ogs_pkbuf_t *sxabuf = NULL;
|
|
|
|
ogs_pfcp_header_t h;
|
|
|
|
ogs_pfcp_xact_t *xact = NULL;
|
|
|
|
|
|
|
|
ogs_assert(sess);
|
|
|
|
|
|
|
|
memset(&h, 0, sizeof(ogs_pfcp_header_t));
|
|
|
|
h.type = OGS_PFCP_SESSION_MODIFICATION_REQUEST_TYPE;
|
|
|
|
h.seid = sess->sgwu_sxa_seid;
|
|
|
|
|
|
|
|
sxabuf = sgwc_sxa_build_sess_modification_request(h.type, sess, flags);
|
|
|
|
ogs_expect_or_return(sxabuf);
|
|
|
|
|
|
|
|
xact = ogs_pfcp_xact_local_create(
|
|
|
|
sess->pfcp_node, &h, sxabuf, sess_timeout, sess);
|
|
|
|
ogs_expect_or_return(xact);
|
|
|
|
xact->assoc_xact = gtp_xact;
|
|
|
|
xact->modify_flags = flags | OGS_PFCP_MODIFY_SESSION;
|
2020-09-18 18:53:23 +00:00
|
|
|
if (gtpbuf) {
|
2020-08-13 00:31:22 +00:00
|
|
|
xact->gtpbuf = ogs_pkbuf_copy(gtpbuf);
|
2020-09-18 18:53:23 +00:00
|
|
|
ogs_assert(xact->gtpbuf);
|
|
|
|
}
|
2020-08-13 00:31:22 +00:00
|
|
|
|
|
|
|
rv = ogs_pfcp_xact_commit(xact);
|
|
|
|
ogs_expect(rv == OGS_OK);
|
|
|
|
}
|
|
|
|
|
|
|
|
void sgwc_pfcp_send_bearer_modification_request(
|
|
|
|
sgwc_bearer_t *bearer, ogs_gtp_xact_t *gtp_xact,
|
|
|
|
ogs_pkbuf_t *gtpbuf, uint64_t flags)
|
|
|
|
{
|
|
|
|
int rv;
|
|
|
|
ogs_pkbuf_t *sxabuf = NULL;
|
|
|
|
ogs_pfcp_header_t h;
|
|
|
|
ogs_pfcp_xact_t *xact = NULL;
|
|
|
|
sgwc_sess_t *sess = NULL;
|
|
|
|
|
|
|
|
ogs_assert(bearer);
|
|
|
|
sess = bearer->sess;
|
|
|
|
ogs_assert(sess);
|
|
|
|
|
|
|
|
memset(&h, 0, sizeof(ogs_pfcp_header_t));
|
|
|
|
h.type = OGS_PFCP_SESSION_MODIFICATION_REQUEST_TYPE;
|
|
|
|
h.seid = sess->sgwu_sxa_seid;
|
|
|
|
|
|
|
|
sxabuf = sgwc_sxa_build_bearer_modification_request(h.type, bearer, flags);
|
|
|
|
ogs_expect_or_return(sxabuf);
|
|
|
|
|
|
|
|
xact = ogs_pfcp_xact_local_create(
|
2021-01-23 03:17:01 +00:00
|
|
|
sess->pfcp_node, &h, sxabuf, bearer_timeout, bearer);
|
2020-08-13 00:31:22 +00:00
|
|
|
ogs_expect_or_return(xact);
|
|
|
|
xact->assoc_xact = gtp_xact;
|
|
|
|
xact->modify_flags = flags;
|
2020-09-18 18:53:23 +00:00
|
|
|
if (gtpbuf) {
|
2020-08-13 00:31:22 +00:00
|
|
|
xact->gtpbuf = ogs_pkbuf_copy(gtpbuf);
|
2020-09-18 18:53:23 +00:00
|
|
|
ogs_assert(xact->gtpbuf);
|
|
|
|
}
|
2020-08-13 00:31:22 +00:00
|
|
|
|
|
|
|
rv = ogs_pfcp_xact_commit(xact);
|
|
|
|
ogs_expect(rv == OGS_OK);
|
|
|
|
}
|
|
|
|
|
|
|
|
void sgwc_pfcp_send_session_deletion_request(
|
|
|
|
sgwc_sess_t *sess, ogs_gtp_xact_t *gtp_xact, ogs_pkbuf_t *gtpbuf)
|
|
|
|
{
|
|
|
|
int rv;
|
|
|
|
ogs_pkbuf_t *sxabuf = NULL;
|
|
|
|
ogs_pfcp_header_t h;
|
|
|
|
ogs_pfcp_xact_t *xact = NULL;
|
|
|
|
|
|
|
|
ogs_assert(sess);
|
|
|
|
|
|
|
|
memset(&h, 0, sizeof(ogs_pfcp_header_t));
|
|
|
|
h.type = OGS_PFCP_SESSION_DELETION_REQUEST_TYPE;
|
|
|
|
h.seid = sess->sgwu_sxa_seid;
|
|
|
|
|
|
|
|
sxabuf = sgwc_sxa_build_session_deletion_request(h.type, sess);
|
|
|
|
ogs_expect_or_return(sxabuf);
|
|
|
|
|
|
|
|
xact = ogs_pfcp_xact_local_create(
|
|
|
|
sess->pfcp_node, &h, sxabuf, sess_timeout, sess);
|
|
|
|
ogs_expect_or_return(xact);
|
|
|
|
xact->assoc_xact = gtp_xact;
|
2020-09-18 18:53:23 +00:00
|
|
|
if (gtpbuf) {
|
2020-08-13 00:31:22 +00:00
|
|
|
xact->gtpbuf = ogs_pkbuf_copy(gtpbuf);
|
2020-09-18 18:53:23 +00:00
|
|
|
ogs_assert(xact->gtpbuf);
|
|
|
|
}
|
2020-08-13 00:31:22 +00:00
|
|
|
|
|
|
|
rv = ogs_pfcp_xact_commit(xact);
|
|
|
|
ogs_expect(rv == OGS_OK);
|
|
|
|
}
|
|
|
|
|
|
|
|
void sgwc_pfcp_send_session_report_response(
|
|
|
|
ogs_pfcp_xact_t *xact, sgwc_sess_t *sess, uint8_t cause)
|
|
|
|
{
|
|
|
|
int rv;
|
|
|
|
ogs_pkbuf_t *sxabuf = NULL;
|
|
|
|
ogs_pfcp_header_t h;
|
|
|
|
|
|
|
|
ogs_assert(xact);
|
|
|
|
|
|
|
|
memset(&h, 0, sizeof(ogs_pfcp_header_t));
|
|
|
|
h.type = OGS_PFCP_SESSION_REPORT_RESPONSE_TYPE;
|
|
|
|
h.seid = sess->sgwu_sxa_seid;
|
|
|
|
|
|
|
|
sxabuf = ogs_pfcp_build_session_report_response(h.type, cause);
|
|
|
|
ogs_expect_or_return(sxabuf);
|
|
|
|
|
|
|
|
rv = ogs_pfcp_xact_update_tx(xact, &h, sxabuf);
|
|
|
|
ogs_expect_or_return(rv == OGS_OK);
|
|
|
|
|
|
|
|
rv = ogs_pfcp_xact_commit(xact);
|
|
|
|
ogs_expect(rv == OGS_OK);
|
|
|
|
}
|