mirror of
https://gitea.osmocom.org/cellular-infrastructure/osmo-upf.git
synced 2025-11-03 05:23:46 +00:00
40a30fce4a
When handing out a chain_id, make sure it is not in use yet. So far picking a chain_id was of PoC grade quality. As osmo-upf is approaching production grade, make this waterproof. So far with inefficient iteration of all sessions; faster lookup follows in I36a75ec4698cd83558185c1f202400eb53ae8ff6. Related: OS#5900 Change-Id: I139b46de0bd15185a7a06109d55f7c759755ec81
145 lines
3.3 KiB
C
145 lines
3.3 KiB
C
/* Global definitions for OsmoUPF */
|
|
/*
|
|
* (C) 2021-2022 by sysmocom - s.f.m.c. GmbH <info@sysmocom.de>
|
|
* All Rights Reserved.
|
|
*
|
|
* Author: Neels Janosch Hofmeyr <nhofmeyr@sysmocom.de>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 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 <http://www.gnu.org/licenses/>.
|
|
*
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <osmocom/core/tdef.h>
|
|
#include <osmocom/core/socket.h>
|
|
#include <osmocom/core/select.h>
|
|
#include <osmocom/core/linuxlist.h>
|
|
|
|
struct osmo_tdef;
|
|
struct ctrl_handle;
|
|
|
|
struct upf_gtp_dev;
|
|
struct nft_ctx;
|
|
|
|
#define UPF_PFCP_LISTEN_DEFAULT "0.0.0.0"
|
|
|
|
#define PORT_GTP0_C 3386
|
|
#define PORT_GTP0_U 3386
|
|
|
|
#define PORT_GTP1_C 2123
|
|
#define PORT_GTP1_U 2152
|
|
|
|
extern struct osmo_tdef_group g_upf_tdef_groups[];
|
|
|
|
struct pfcp_vty_cfg {
|
|
char *local_addr;
|
|
uint16_t local_port;
|
|
};
|
|
|
|
struct tunend_vty_cfg_dev {
|
|
struct llist_head entry;
|
|
|
|
/* If true, osmo-upf creates the GTP device on startup. If false, the GTP device was created by the user, and we
|
|
* just plug into it. */
|
|
bool create;
|
|
|
|
/* GTP device name as shown by 'ip link', e.g. 'apn0' */
|
|
char *dev_name;
|
|
|
|
/* Which address the GTP device should listen on.
|
|
* When create == true, the GTP kernel module is created to listen on this address.
|
|
* Also used to listen for GTP ECHO requests using libgtp. */
|
|
char *local_addr;
|
|
};
|
|
|
|
struct tunend_vty_cfg {
|
|
/* list of struct tunend_vty_cfg_dev, GTP devices as in the config file. The actual GTP devices in use are in
|
|
* g_upf->tunend.devs. */
|
|
struct llist_head devs;
|
|
};
|
|
|
|
/* Item in an llist of string pointers */
|
|
struct string_listitem {
|
|
struct llist_head entry;
|
|
char *str;
|
|
};
|
|
|
|
struct g_upf {
|
|
struct ctrl_handle *ctrl;
|
|
|
|
struct {
|
|
struct pfcp_vty_cfg vty_cfg;
|
|
struct up_endpoint *ep;
|
|
} pfcp;
|
|
|
|
/* Tunnel encaps decaps via GTP kernel module */
|
|
struct {
|
|
/* if true, don't actually send commands to the GTP kernel module, just return success. */
|
|
bool mockup;
|
|
|
|
/* GTP devices as in osmo-upf.cfg */
|
|
struct tunend_vty_cfg vty_cfg;
|
|
|
|
/* GTP devices actually in use, list of struct upf_gtp_dev. */
|
|
struct llist_head devs;
|
|
|
|
struct mnl_socket *nl;
|
|
int32_t genl_id;
|
|
|
|
uint8_t recovery_count;
|
|
} tunend;
|
|
|
|
/* Tunnel forwarding via linux netfilter */
|
|
struct {
|
|
/* if true, don't actually send commands to nftables, just return success. */
|
|
bool mockup;
|
|
|
|
struct nft_ctx *nft_ctx;
|
|
char *table_name;
|
|
int priority_pre;
|
|
int priority_post;
|
|
uint32_t next_chain_id_state;
|
|
} tunmap;
|
|
|
|
struct {
|
|
uint32_t next_local_teid_state;
|
|
} gtp;
|
|
|
|
struct llist_head netinst;
|
|
};
|
|
|
|
extern struct g_upf *g_upf;
|
|
|
|
enum upf_log_subsys {
|
|
DREF,
|
|
DPEER,
|
|
DSESSION,
|
|
DGTP,
|
|
DNFT,
|
|
};
|
|
|
|
void g_upf_alloc(void *ctx);
|
|
void upf_vty_init();
|
|
int upf_pfcp_init(void);
|
|
int upf_pfcp_listen(void);
|
|
|
|
int upf_gtp_devs_open();
|
|
void upf_gtp_devs_close();
|
|
|
|
uint32_t upf_next_local_teid(void);
|
|
uint32_t upf_next_chain_id(void);
|