94 lines
2.9 KiB
C
94 lines
2.9 KiB
C
/*
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* (C) 2021-2022 by sysmocom - s.f.m.c. GmbH <info@sysmocom.de>
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* All Rights Reserved.
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*
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* Author: Neels Janosch Hofmeyr <nhofmeyr@sysmocom.de>
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*
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* SPDX-License-Identifier: GPL-2.0+
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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 General Public License as published by
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* the Free Software Foundation; either version 2 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 <http://www.gnu.org/licenses/>.
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*
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*/
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#pragma once
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#include <osmocom/core/linuxlist.h>
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#include <osmocom/core/select.h>
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#include <osmocom/core/logging.h>
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#define LOG_GTP_DEV(DEV, LEVEL, FMT, ARGS...) \
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LOGP(DGTP, LEVEL, "%s: " FMT, upf_gtp_dev_to_str_c(OTC_SELECT, (DEV)), ##ARGS)
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#define PORT_GTP0_C 3386
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#define PORT_GTP0_U 3386
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#define PORT_GTP1_C 2123
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#define PORT_GTP1_U 2152
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struct upf_gtp_dev {
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struct llist_head entry;
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/* If true, osmo-upf created this GTP device on startup and will destroy it on program exit. If false, the user
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* has created the device and osmo-upf will not destroy it. */
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bool created;
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char *name;
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struct {
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bool enabled;
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struct osmo_sockaddr local_addr;
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struct osmo_fd ofd;
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} gtpv0;
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struct {
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struct osmo_sockaddr local_addr;
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struct osmo_fd ofd;
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} gtpv1;
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bool sgsn_mode;
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uint32_t ifidx;
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/* list of struct upf_gtp_tunend */
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struct llist_head tunnels;
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};
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/* Description of a GTP encapsulation / decapsulation.
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* The active state to operate the GTP kernel module accordingly is kept in struct upf_gtp_tunend. */
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struct upf_gtp_tunend_desc {
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struct {
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struct osmo_sockaddr gtp_local_addr;
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uint32_t local_teid;
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struct osmo_sockaddr gtp_remote_addr;
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uint32_t remote_teid;
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} access;
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struct {
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struct osmo_sockaddr ue_local_addr;
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} core;
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};
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int upf_gtp_tunend_desc_cmp(const struct upf_gtp_tunend_desc *a, const struct upf_gtp_tunend_desc *b);
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int upf_gtp_genl_ensure_open();
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void upf_gtp_genl_close();
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int upf_gtp_dev_open(const char *name, bool create_gtp_dev, const char *local_addr, bool listen_for_gtpv0,
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bool sgsn_mode);
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struct upf_gtp_dev *upf_gtp_dev_find_by_name(const char *name);
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struct upf_gtp_dev *upf_gtp_dev_find_by_local_addr(const struct osmo_sockaddr *local_addr);
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struct upf_gtp_dev *upf_gtp_dev_first();
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int upf_gtp_dev_tunend_add(struct upf_gtp_dev *dev, const struct upf_gtp_tunend_desc *t);
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int upf_gtp_dev_tunend_del(struct upf_gtp_dev *dev, const struct upf_gtp_tunend_desc *t);
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int upf_gtp_dev_to_str_buf(char *buf, size_t buflen, const struct upf_gtp_dev *dev);
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char *upf_gtp_dev_to_str_c(void *ctx, const struct upf_gtp_dev *dev);
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