/* * libpri: An implementation of Primary Rate ISDN * * Written by Mark Spencer * * Copyright (C) 2001, Linux Support Services, Inc. * All Rights Reserved. * * 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., 675 Mass Ave, Cambridge, MA 02139, USA. * */ #ifndef _PRI_INTERNAL_H #define _PRI_INTERNAL_H #include struct pri_sched { struct timeval when; void (*callback)(void *data); void *data; }; struct q921_frame; enum q931_state; enum q931_mode; /* No more than 128 scheduled events */ #define MAX_SCHED 128 #define MAX_TIMERS 32 struct pri { int fd; /* File descriptor for D-Channel */ pri_io_cb read_func; /* Read data callback */ pri_io_cb write_func; /* Write data callback */ void *userdata; struct pri *subchannel; /* Sub-channel if appropriate */ struct pri *master; /* Master channel if appropriate */ struct pri_sched pri_sched[MAX_SCHED]; /* Scheduled events */ int debug; /* Debug stuff */ int state; /* State of D-channel */ int switchtype; /* Switch type */ int nsf; /* Network-Specific Facility (if any) */ int localtype; /* Local network type (unknown, network, cpe) */ int remotetype; /* Remote network type (unknown, network, cpe) */ int sapi; int tei; int protodisc; /* Q.921 State */ int q921_state; int window; /* Max window size */ int windowlen; /* Fullness of window */ int v_s; /* Next N(S) for transmission */ int v_a; /* Last acknowledged frame */ int v_r; /* Next frame expected to be received */ int v_na; /* What we've told our peer we've acknowledged */ int solicitfbit; /* Have we sent an I or S frame with the F-bit set? */ int retrans; /* Retransmissions */ int sentrej; /* Are we in reject state */ int cref; /* Next call reference value */ int busy; /* Peer is busy */ /* Various timers */ int sabme_timer; /* SABME retransmit */ int t203_timer; /* Max idle time */ int t200_timer; /* T-200 retransmission timer */ /* All ISDN Timer values */ int timers[MAX_TIMERS]; /* Used by scheduler */ struct timeval tv; int schedev; pri_event ev; /* Static event thingy */ /* Q.921 Re-transmission queue */ struct q921_frame *txqueue; /* Q.931 calls */ q931_call **callpool; q931_call *localpool; /* do we do overlap dialing */ int overlapdial; #ifdef LIBPRI_COUNTERS /* q921/q931 packet counters */ unsigned int q921_txcount; unsigned int q921_rxcount; unsigned int q931_txcount; unsigned int q931_rxcount; #endif unsigned char last_invoke; /* Last ROSE invoke ID */ unsigned char sendfacility; }; struct pri_sr { int transmode; int channel; int exclusive; int nonisdn; char *caller; int callerplan; char *callername; int callerpres; char *called; int calledplan; int userl1; int numcomplete; char *redirectingnum; int redirectingplan; int redirectingpres; int redirectingreason; int justsignalling; const char *useruserinfo; int transferable; }; /* Internal switch types */ #define PRI_SWITCH_GR303_EOC_PATH 19 #define PRI_SWITCH_GR303_TMC_SWITCHING 20 struct apdu_event { int message; /* What message to send the ADPU in */ void (*callback)(void *data); /* Callback function for when response is received */ void *data; /* Data to callback */ unsigned char apdu[255]; /* ADPU to send */ int apdu_len; /* Length of ADPU */ int sent; /* Have we been sent already? */ struct apdu_event *next; /* Linked list pointer */ }; /* q931_call datastructure */ struct q931_call { struct pri *pri; /* PRI */ int cr; /* Call Reference */ int forceinvert; /* Force inversion of call number even if 0 */ q931_call *next; /* Slotmap specified (bitmap of channels 31/24-1) (Channel Identifier IE) (-1 means not specified) */ int slotmap; /* An explicit channel (Channel Identifier IE) (-1 means not specified) */ int channelno; /* An explicit DS1 (-1 means not specified) */ int ds1no; /* Whether or not the ds1 is explicitly identified or implicit. If implicit the bchan is on the same span as the current active dchan (NFAS) */ int ds1explicit; /* Channel flags (0 means none retrieved) */ int chanflags; int alive; /* Whether or not the call is alive */ int acked; /* Whether setup has been acked or not */ int sendhangupack; /* Whether or not to send a hangup ack */ int proc; /* Whether we've sent a call proceeding / alerting */ int ri; /* Restart Indicator (Restart Indicator IE) */ /* Bearer Capability */ int transcapability; int transmoderate; int transmultiple; int userl1; int userl2; int userl3; int rateadaption; int sentchannel; int justsignalling; /* for a signalling-only connection */ int progcode; /* Progress coding */ int progloc; /* Progress Location */ int progress; /* Progress indicator */ int progressmask; /* Progress Indicator bitmask */ int notify; /* Notification */ int causecode; /* Cause Coding */ int causeloc; /* Cause Location */ int cause; /* Cause of clearing */ int peercallstate; /* Call state of peer as reported */ int ourcallstate; /* Our call state */ int sugcallstate; /* Status call state */ int callerplan; int callerplanani; int callerpres; /* Caller presentation */ char callerani[256]; /* Caller */ char callernum[256]; char callername[256]; char keypad_digits[64]; /* Buffer for digits that come in KEYPAD_FACILITY */ int ani2; /* ANI II */ int calledplan; int nonisdn; char callednum[256]; /* Called Number */ int complete; /* no more digits coming */ int newcall; /* if the received message has a new call reference value */ int retranstimer; /* Timer for retransmitting DISC */ int t308_timedout; /* Whether t308 timed out once */ int redirectingplan; int redirectingpres; int redirectingreason; char redirectingnum[256]; /* Number of redirecting party */ char redirectingname[256]; /* Name of redirecting party */ /* Filled in cases of multiple diversions */ int origcalledplan; int origcalledpres; int origredirectingreason; /* Original reason for redirect (in cases of multiple redirects) */ char origcalledname[256]; /* Original name of person being called */ char origcallednum[256]; /* Orignal number of person being called */ int useruserprotocoldisc; char useruserinfo[256]; char callingsubaddr[256]; /* Calling parties sub address */ long aoc_units; /* Advice of Charge Units */ struct apdu_event *apdus; /* APDU queue for call */ int transferable; unsigned int rlt_call_id; /* RLT call id */ }; extern int pri_schedule_event(struct pri *pri, int ms, void (*function)(void *data), void *data); extern pri_event *pri_schedule_run(struct pri *pri); extern void pri_schedule_del(struct pri *pri, int ev); extern pri_event *pri_mkerror(struct pri *pri, char *errstr); extern void pri_message(struct pri *pri, char *fmt, ...); extern void pri_error(struct pri *pri, char *fmt, ...); void libpri_copy_string(char *dst, const char *src, size_t size); #endif