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/*
* (C) 2010-2011 by Holger Hans Peter Freyther <zecke@selfish.org>
* (C) 2010-2011 by On-Waves
* 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/licenses/>.
*
*/
#ifndef mtp_data_h
#define mtp_data_h
#include <osmocore/msgb.h>
#include <osmocore/timer.h>
#include <osmocore/utils.h>
struct bsc_data;
struct mtp_link;
/* MTP Level3 timers */
/* Timers for SS7 */
#define MTP_T1 12, 0
#define MTP_T2 30, 0
#define START_DELAY 8, 0
/**
* The state of the mtp_link in terms of layer3 and upwards
*/
struct mtp_link_set {
/* routing info.. */
int dpc, opc, sccp_opc;
int ni;
int spare;
/* internal state */
/* the MTP1 link is up */
int available;
int running;
int sccp_up;
int last_sls;
/* misc data */
uint8_t test_ptrn[14];
int sltm_pending;
int sltm_once;
int was_up;
int slta_misses;
struct timer_list t1_timer;
struct timer_list t2_timer;
struct timer_list delay_timer;
struct llist_head links;
struct mtp_link *slc[16];
/* special handling */
int pass_all_isup;
/* custom data */
struct bsc_data *bsc;
};
/**
* One physical link to somewhere. This is the base
* with the interface used by the mtp_link_set. There
* will be specific implementations for M2UA, UDP and
* other transport means.
*/
struct mtp_link {
struct llist_head entry;
int pcap_fd;
struct mtp_link_set *the_link;
int available;
struct timer_list link_activate;
int (*start)(struct mtp_link *);
int (*write)(struct mtp_link *, struct msgb *msg);
int (*shutdown)(struct mtp_link *);
int (*reset)(struct mtp_link *data);
int (*clear_queue)(struct mtp_link *data);
};
struct mtp_link_set *mtp_link_set_alloc(void);
void mtp_link_set_stop(struct mtp_link_set *link);
void mtp_link_set_reset(struct mtp_link_set *link);
int mtp_link_set_data(struct mtp_link_set *link, struct msgb *msg);
int mtp_link_set_submit_sccp_data(struct mtp_link_set *link, int sls, const uint8_t *data, unsigned int length);
int mtp_link_set_submit_isup_data(struct mtp_link_set *link, int sls, const uint8_t *data, unsigned int length);
void mtp_link_set_init_slc(struct mtp_link_set *set);
void mtp_link_set_add_link(struct mtp_link_set *set, struct mtp_link *link);
/* one time init function */
void mtp_link_set_init(void);
/* to be implemented for MSU sending */
void mtp_link_set_submit(struct mtp_link *link, struct msgb *msg);
void mtp_link_set_forward_sccp(struct mtp_link_set *link, struct msgb *msg, int sls);
void mtp_link_set_forward_isup(struct mtp_link_set *link, struct msgb *msg, int sls);
void mtp_link_restart(struct mtp_link *link);
void mtp_link_set_sccp_down(struct mtp_link_set *link);
#endif
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