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/* Everything related to linksets */
/*
* (C) 2010-2013 by Holger Hans Peter Freyther <zecke@selfish.org>
* (C) 2010-2013 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 linkset_h
#define linkset_h
#include <osmocom/core/linuxlist.h>
#include <osmocom/core/timer.h>
#include <stdint.h>
struct msgb;
/**
* The state of the mtp_link in terms of layer3 and upwards
*/
struct mtp_link_set {
struct llist_head entry;
int nr;
char *name;
/*
* Callbacks for the SS7 application
*/
void (*on_down) (struct mtp_link_set *set);
void (*on_up) (struct mtp_link_set *set);
void (*on_sccp) (struct mtp_link_set *set, struct msgb *msg, int sls);
void (*on_isup) (struct mtp_link_set *set, struct msgb *msg, int sls);
/**
* Routing is very limited. We can only forward to one
* other STP/Endpoint. For ISUP and SCCP we can statically
* send it to another destination. We need to follow Q.704
* more properly here.
* DPC/OPC are the ones for the linkset,
* sccp_dpc/isup_dpc are where we will send SCCP/ISUP messages
* sccp_opc/isup_opc are what we announce in the TFP
*/
int dpc, opc;
int sccp_dpc, isup_dpc;
int sccp_opc, isup_opc;
int ni;
int spare;
/* internal state */
/* the MTP1 link is up */
int available;
int running;
int sccp_up;
int linkset_up;
int last_sls;
struct llist_head links;
int nr_links;
struct mtp_link *slc[16];
int sltm_once;
/* ssn map */
int supported_ssn[256];
int pcap_fd;
/* special handling */
int pass_all_isup;
/* statistics */
struct rate_ctr_group *ctrg;
/* statistics for routing */
int timeout_t18;
int timeout_t20;
struct osmo_timer_list T18;
struct osmo_timer_list T20;
/* custom data */
struct bsc_data *bsc;
struct ss7_application *app;
};
void mtp_link_set_stop(struct mtp_link_set *set);
void mtp_link_set_reset(struct mtp_link_set *set);
int mtp_link_set_data(struct mtp_link *link, struct msgb *msg);
int mtp_link_handle_data(struct mtp_link *link, struct msgb *msg);
int mtp_link_set_submit_sccp_data(struct mtp_link_set *set, int sls, const uint8_t *data, unsigned int length);
int mtp_link_set_submit_isup_data(struct mtp_link_set *set, int sls, const uint8_t *data, unsigned int length);
void mtp_link_set_init_slc(struct mtp_link_set *set);
/* link management */
struct mtp_link_set *mtp_link_set_alloc(struct bsc_data *bsc);
struct mtp_link_set *mtp_link_set_num(struct bsc_data *bsc, int num);
/* to be implemented for MSU sending */
int mtp_link_set_send(struct mtp_link_set *set, struct msgb *msg);
/* internal routines */
struct msgb *mtp_msg_alloc(struct mtp_link_set *set);
#endif
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