osmo-hnodeb/include/osmocom/hnodeb/gtp.h

46 lines
1.5 KiB
C

/* (C) 2021 by sysmocom - s.f.m.c. GmbH <info@sysmocom.de>
* Author: Pau Espin Pedrol <pespin@sysmocom.de>
* All Rights Reserved
*
* 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/lienses/>.
*
*/
#pragma once
#include <osmocom/core/socket.h>
#include <osmocom/core/linuxlist.h>
struct hnb;
struct hnb_ue;
int hnb_gtp_bind(struct hnb *hnb);
void hnb_gtp_unbind(struct hnb *hnb);
struct gtp_conn {
struct llist_head list; /* Item in struct hnb->ue_list */
struct hnb_ue *ue; /* backpointer */
uint32_t id;
struct osmo_sockaddr loc_addr;
struct osmo_sockaddr rem_addr;
uint32_t loc_tei;
uint32_t rem_tei;
uint16_t seq_nr;
};
struct gtp_conn *gtp_conn_alloc(struct hnb_ue *ue);
void gtp_conn_free(struct gtp_conn *conn);
int gtp_conn_setup(struct gtp_conn *conn, const struct osmo_sockaddr *rem_addr, uint32_t rem_tei);
int gtp_conn_tx(struct gtp_conn *conn, const uint8_t *gtpu_payload, unsigned gtpu_payload_len);