Osmocom Packet control Unit (PCU): Network-side GPRS (RLC/MAC); BTS- or BSC-colocated https://osmocom.org/projects/osmopcu
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osmo-pcu/src/gprs_bssgp_pcu.h

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/* gprs_bssgp_pcu.h
*
* Copyright (C) 2012 Ivan Klyuchnikov
* Copyright (C) 2013 by Holger Hans Peter Freyther
*
* 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef GPRS_BSSGP_PCU_H
#define GPRS_BSSGP_PCU_H
#ifdef __cplusplus
extern "C" {
#endif
#include <osmocom/core/talloc.h>
#include <osmocom/core/rate_ctr.h>
#include <osmocom/core/logging.h>
#include <osmocom/core/signal.h>
#include <osmocom/core/application.h>
#include <osmocom/gprs/gprs_ns2.h>
#include <osmocom/gprs/gprs_bssgp.h>
#include <osmocom/gprs/gprs_bssgp_bss.h>
#include <osmocom/gprs/gprs_msgb.h>
struct bssgp_bvc_ctx *btsctx_alloc(uint16_t bvci, uint16_t nsei);
#include <gprs_debug.h>
#include <time.h>
#include <unistd.h>
#define QOS_PROFILE 4
#define BSSGP_HDR_LEN 53
#define NS_HDR_LEN 4
#define IE_LLC_PDU 14
enum sgsn_counter_id {
SGSN_CTR_RX_PAGING_CS,
SGSN_CTR_RX_PAGING_PS,
};
struct gprs_bssgp_pcu {
struct bssgp_bvc_ctx *bctx;
struct gprs_rlcmac_bts *bts;
struct osmo_timer_list bvc_timer;
struct rate_ctr_group *ctrs;
/* state: is the NSVC unblocked? */
int nsvc_unblocked;
/* state: true if bvc signalling needs to be reseted or waiting for reset ack */
int bvc_sig_reset;
/* state: true if bvc ptp needs to be reseted or waiting for reset ack */
int bvc_reset;
/* state: true if bvc ptp is unblocked */
int bvc_unblocked;
/* Flow control */
struct timespec queue_delay_sum;
unsigned queue_delay_count;
uint8_t fc_tag;
unsigned queue_frames_sent;
unsigned queue_bytes_recv;
unsigned queue_frames_recv;
/** callbacks below */
/* The BSSGP has been unblocked */
void (*on_unblock_ack)(struct gprs_bssgp_pcu *pcu);
/* When BSSGP data arrives. The msgb is not only for reference */
void (*on_dl_unit_data)(struct gprs_bssgp_pcu *pcu, struct msgb *msg,
struct tlv_parsed *tp);
};
int gprs_gp_send_cb(void *ctx, struct msgb *msg);
int gprs_ns_prim_cb(struct osmo_prim_hdr *oph, void *ctx);
void gprs_bssgp_update_queue_delay(const struct timespec *tv_recv,
const struct timespec *tv_now);
void gprs_bssgp_update_frames_sent();
void gprs_bssgp_update_bytes_received(unsigned bytes_recv, unsigned frames_recv);
struct gprs_bssgp_pcu *gprs_bssgp_init(
struct gprs_rlcmac_bts *bts,
uint16_t nsei, uint16_t bvci,
uint16_t mcc, uint16_t mnc, bool mnc_3_digits,
uint16_t lac, uint16_t rac, uint16_t cell_id);
int gprs_ns_update_config(struct gprs_rlcmac_bts *bts, uint16_t nsei,
const struct osmo_sockaddr *local,
const struct osmo_sockaddr *remote,
uint16_t *nsvci, uint16_t valid);
void gprs_bssgp_destroy(struct gprs_rlcmac_bts *bts);
#ifdef __cplusplus
}
#endif
#endif // GPRS_BSSGP_PCU_H