/* mtp.h - MTP2 and MTP3 functionality. * * Copyright (C) 2005-2006, Sifira A/S. * * Author: Kristian Nielsen <kn@sifira.dk> *         Anders Baekgaard <ab@sifira.dk> *         Anders Baekgaard <ab@dicea.dk> * * This file is part of chan_ss7. * * chan_ss7 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. * * chan_ss7 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 chan_ss7; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA */#define SS7_PROTO_ISUP 5#define SS7_PROTO_SCCP 3/* Max. MTP2 packet size, including sequence numbers, CRC, and two flags. */#define MTP_MAX_PCK_SIZE 280/* Structure used to send requests to the MTP thread. */#define MTP_REQ_MAX_SIZE (sizeof(struct mtp_req) + MTP_MAX_PCK_SIZE)struct mtp_req {  /* The "typ" fiend determines which element in the union is used. */  enum {    MTP_REQ_ISUP,               /* Queue ISUP MSU for sending on link */    MTP_REQ_SCCP,               /* Queue SCCP MSU for sending on link */    MTP_REQ_ISUP_FORWARD,       /* ISUP event to be sent on MTP */    MTP_REQ_LINK_DOWN,          /* Take link out of service */    MTP_REQ_LINK_UP,            /* Start initial alignment procedure */    MTP_REQ_REGISTER_L4,	/* Register layer 4 protocol */  } typ;  unsigned long seq_no;  union {    struct {      struct link* slink;      struct link* link;      int slinkix;    } isup;    struct {      struct link* slink;      int slinkix;    } sccp;    struct {      int link_ix;    } link;    struct {      int ss7_protocol;      int host_ix;      int linkix;      union {	struct {	  int subsystem;	} sccp;      };    } regist;  };  int len;  unsigned char buf[0];};/* Structure used to return events from the MTP thread. */#define MTP_EVENT_MAX_SIZE (sizeof(struct mtp_event) + 1000)struct mtp_event {  /* The "typ" field determines which element in the union is used. */  enum {    MTP_EVENT_ALIVE = 10,       /* Enum value above this indicate MTP_EVENT_... */    MTP_EVENT_ISUP,             /* ISUP MSU received on link */    MTP_EVENT_SCCP,             /* SCCP MSU received on link */    MTP_EVENT_REQ_REGISTER,	/* Require register */    MTP_EVENT_LOG,              /* Log message for ast_log() */    MTP_EVENT_DUMP,             /* Link data for frame-level debug dump */    MTP_EVENT_STATUS,           /* F.ex. "link down". */    MTP_EVENT_LAST,             /* Placeholder, Must be last in enumeration */  } typ;  unsigned long seq_no;  union {    struct {      struct link* slink;      struct link* link;      int slinkix;    } isup;    struct {      struct link* slink;      int slinkix;    } sccp;    struct {      int ss7_protocol;      int host_ix;      union {	struct {	  int slinkix;	} isup;      };    } regist;    struct {      int level;      const char *file;      int line;      const char *function;    } log;    struct {      int out;                  /* True if sent packet, false if received */      struct timeval stamp;        /* Timestamp */      int slinkno;		/* Signalling link no */    } dump;    struct {      enum {	MTP_EVENT_STATUS_LINK_UP,	MTP_EVENT_STATUS_LINK_DOWN,	MTP_EVENT_STATUS_INSERVICE      } link_state;      struct link* link;    } status;  };  int len;  unsigned char buf[0];};/* Must be called once to initialize MTP, before starting the MTP thread.   Returns 0 on ok, -1 on error. */int mtp_init(void);void mtp_cleanup(void);void *mtp_thread_main(void *data);void mtp_thread_signal_stop(void);struct lffifo *mtp_get_receive_fifo(void);struct lffifo **mtp_get_send_fifo(void);struct lffifo *mtp_get_control_fifo(void);void mtp3_put_label(int sls, int opc, int dpc, unsigned char *buf);int mtp_has_inservice_schannels(struct link*);int mtp2_slink_inservice(int linkix);int mtp_cmd_linkstatus(char* buff, int timeslot);int mtp_cmd_data(int fd, int argc, char *argv[]);int cmd_testfailover(int fd, int argc, char *argv[]);int get_receive_pipe(void);