0bc69b6498
and move them in their proper places. Move the BRI registry from layer 2 (duh!) to layer 4, so active cards (which don't have layer 3 or layer 2 in their driver). Remove all remaining hard coded controller and driver types. Remove any arbitrary hard coded limits, at least those that show up in the internal API. This fixes PR 15950.
708 lines
16 KiB
C
708 lines
16 KiB
C
/*
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* Copyright (c) 1997, 2000 Hellmuth Michaelis. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*---------------------------------------------------------------------------
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*
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* i4b_q931.c - Q931 received messages handling
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* --------------------------------------------
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*
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* $Id: i4b_q931.c,v 1.8 2002/03/24 20:36:02 martin Exp $
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*
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* $FreeBSD$
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*
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* last edit-date: [Fri Jan 5 11:33:47 2001]
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*
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*---------------------------------------------------------------------------*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: i4b_q931.c,v 1.8 2002/03/24 20:36:02 martin Exp $");
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#ifdef __FreeBSD__
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#include "i4bq931.h"
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#else
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#define NI4BQ931 1
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#endif
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#if NI4BQ931 > 0
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/systm.h>
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#include <sys/mbuf.h>
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#include <sys/socket.h>
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#include <net/if.h>
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#if defined(__NetBSD__) && __NetBSD_Version__ >= 104230000
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#include <sys/callout.h>
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#endif
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#ifdef __FreeBSD__
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#include <machine/i4b_debug.h>
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#include <machine/i4b_ioctl.h>
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#include <machine/i4b_cause.h>
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#else
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#include <netisdn/i4b_debug.h>
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#include <netisdn/i4b_ioctl.h>
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#include <netisdn/i4b_cause.h>
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#endif
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#include <netisdn/i4b_isdnq931.h>
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#include <netisdn/i4b_l2.h>
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#include <netisdn/i4b_l3l4.h>
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#include <netisdn/i4b_mbuf.h>
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#include <netisdn/i4b_global.h>
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#include <netisdn/i4b_l3.h>
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#include <netisdn/i4b_l3fsm.h>
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#include <netisdn/i4b_q931.h>
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#include <netisdn/i4b_l4.h>
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unsigned int i4b_l3_debug = L3_DEBUG_DEFAULT;
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/* protocol independent causes -> Q.931 causes */
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unsigned char cause_tab_q931[CAUSE_I4B_MAX] = {
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CAUSE_Q850_NCCLR, /* CAUSE_I4B_NORMAL -> normal call clearing */
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CAUSE_Q850_USRBSY, /* CAUSE_I4B_BUSY -> user busy */
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CAUSE_Q850_NOCAVAIL, /* CAUSE_I4B_NOCHAN -> no circuit/channel available*/
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CAUSE_Q850_INCDEST, /* CAUSE_I4B_INCOMP -> incompatible destination */
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CAUSE_Q850_CALLREJ, /* CAUSE_I4B_REJECT -> call rejected */
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CAUSE_Q850_DSTOOORDR, /* CAUSE_I4B_OOO -> destination out of order */
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CAUSE_Q850_TMPFAIL, /* CAUSE_I4B_TMPFAIL -> temporary failure */
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CAUSE_Q850_USRBSY, /* CAUSE_I4B_L1ERROR -> L1 error / persistent deact XXX */
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CAUSE_Q850_USRBSY, /* CAUSE_I4B_LLDIAL -> no dialout on leased line XXX */
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};
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/*---------------------------------------------------------------------------*
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* setup cr ref flag according to direction
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*---------------------------------------------------------------------------*/
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unsigned char
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setup_cr(call_desc_t *cd, unsigned char cr)
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{
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if(cd->crflag == CRF_ORIG)
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return(cr & 0x7f); /* clear cr ref flag */
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else if(cd->crflag == CRF_DEST)
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return(cr | 0x80); /* set cr ref flag */
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else
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panic("setup_cr: invalid crflag!\n");
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}
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/*---------------------------------------------------------------------------*
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* decode and process a Q.931 message
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*---------------------------------------------------------------------------*/
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void
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i4b_decode_q931(int bri, int msg_len, u_char *msg_ptr)
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{
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call_desc_t *cd;
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int codeset = CODESET_0;
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int old_codeset = CODESET_0;
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int shift_flag = UNSHIFTED;
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int crlen = 0;
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int crval = 0;
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int crflag = 0;
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int i;
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int offset;
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int s;
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/* check protocol discriminator */
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if(*msg_ptr != PD_Q931)
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{
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static int protoflag = -1; /* print only once .. */
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if(*msg_ptr != protoflag)
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{
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NDBGL3(L3_P_MSG, "unknown protocol discriminator 0x%x!", *msg_ptr);
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protoflag = *msg_ptr;
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}
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return;
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}
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msg_ptr++;
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msg_len--;
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s = splnet(); /* this has to be protected ! */
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/* extract call reference */
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crlen = *msg_ptr & CRLENGTH_MASK;
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msg_ptr++;
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msg_len--;
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if(crlen != 0)
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{
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crval += *msg_ptr & 0x7f;
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crflag = (*msg_ptr >> 7) & 0x01;
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msg_ptr++;
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msg_len--;
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for(i=1; i < crlen; i++)
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{
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crval += *msg_ptr;
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msg_ptr++;
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msg_len--;
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}
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}
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else
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{
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crval = 0;
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crflag = 0;
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}
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NDBGL3(L3_P_MSG, "Call Ref, len %d, val %d, flag %d", crlen, crval, crflag);
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/* find or allocate calldescriptor */
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if((cd = cd_by_bricr(bri, crval,
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crflag == CRF_DEST ? CRF_ORIG : CRF_DEST)) == NULL)
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{
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if(*msg_ptr == SETUP)
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{
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/* get and init new calldescriptor */
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cd = reserve_cd(); /* cdid filled in */
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cd->bri = bri;
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cd->cr = crval;
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cd->crflag = CRF_DEST; /* we are the dest side */
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cd->l4_driver = NULL; /* reset link tab ptrs */
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cd->l4_driver_softc = NULL;
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}
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else
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{
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/*XXX*/ if(crval != 0) /* ignore global call references */
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{
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NDBGL3(L3_P_ERR, "cannot find calldescriptor for cr = 0x%x, crflag = 0x%x, msg = 0x%x, frame = ", crval, crflag, *msg_ptr);
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i4b_print_frame(msg_len, msg_ptr);
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}
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splx(s);
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return;
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}
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}
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splx(s);
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/* decode and handle message type */
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i4b_decode_q931_message(bri, cd, *msg_ptr);
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msg_ptr++;
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msg_len--;
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/* process information elements */
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while(msg_len > 0)
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{
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/* check for shift codeset IE */
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if((*msg_ptr & 0x80) && ((*msg_ptr & 0xf0) == SOIE_SHIFT))
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{
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if(!(*msg_ptr & SHIFT_LOCK))
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shift_flag = SHIFTED;
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old_codeset = codeset;
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codeset = *msg_ptr & CODESET_MASK;
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if((shift_flag != SHIFTED) &&
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(codeset <= old_codeset))
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{
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NDBGL3(L3_P_ERR, "Q.931 lockingshift proc violation, shift %d -> %d", old_codeset, codeset);
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codeset = old_codeset;
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}
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msg_len--;
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msg_ptr++;
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}
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/* process one IE for selected codeset */
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switch(codeset)
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{
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case CODESET_0:
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offset = i4b_decode_q931_cs0_ie(bri, cd, msg_len, msg_ptr);
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msg_len -= offset;
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msg_ptr += offset;
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break;
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default:
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NDBGL3(L3_P_ERR, "unknown codeset %d, ", codeset);
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i4b_print_frame(msg_len, msg_ptr);
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msg_len = 0;
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break;
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}
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/* check for non-locking shifts */
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if(shift_flag == SHIFTED)
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{
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shift_flag = UNSHIFTED;
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codeset = old_codeset;
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}
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}
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next_l3state(cd, cd->event);
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}
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/*---------------------------------------------------------------------------*
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* decode and process one Q.931 codeset 0 information element
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*---------------------------------------------------------------------------*/
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int
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i4b_decode_q931_cs0_ie(int unit, call_desc_t *cd, int msg_len, u_char *msg_ptr)
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{
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int i, j;
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char *p;
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switch(*msg_ptr)
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{
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/*********/
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/* Q.931 */
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/*********/
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/* single byte IE's */
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case IEI_SENDCOMPL:
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NDBGL3(L3_P_MSG, "IEI_SENDCOMPL");
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return(1);
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break;
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/* multi byte IE's */
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case IEI_SEGMMSG: /* segmented message */
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NDBGL3(L3_P_MSG, "IEI_SEGMENTED_MESSAGE");
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break;
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case IEI_BEARERCAP: /* bearer capability */
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switch(msg_ptr[2])
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{
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case 0x80: /* speech */
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case 0x89: /* restricted digital info */
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case 0x90: /* 3.1KHz audio */
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/* XXX */ cd->bprot = BPROT_NONE;
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NDBGL3(L3_P_MSG, "IEI_BEARERCAP - Telephony");
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break;
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case 0x88: /* unrestricted digital info */
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/* XXX */ cd->bprot = BPROT_RHDLC;
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NDBGL3(L3_P_MSG, "IEI_BEARERCAP - Raw HDLC");
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break;
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default:
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/* XXX */ cd->bprot = BPROT_NONE;
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NDBGL3(L3_P_ERR, "IEI_BEARERCAP - Unsupported B-Protocol 0x%x", msg_ptr[2]);
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break;
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}
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break;
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case IEI_CAUSE: /* cause */
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if(msg_ptr[2] & 0x80)
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{
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cd->cause_in = msg_ptr[3] & 0x7f;
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NDBGL3(L3_P_MSG, "IEI_CAUSE = %d", msg_ptr[3] & 0x7f);
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}
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else
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{
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cd->cause_in = msg_ptr[4] & 0x7f;
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NDBGL3(L3_P_MSG, "IEI_CAUSE = %d", msg_ptr[4] & 0x7f);
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}
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break;
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case IEI_CALLID: /* call identity */
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NDBGL3(L3_P_MSG, "IEI_CALL_IDENTITY");
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break;
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case IEI_CALLSTATE: /* call state */
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cd->call_state = msg_ptr[2] & 0x3f;
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NDBGL3(L3_P_MSG, "IEI_CALLSTATE = %d", cd->call_state);
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break;
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case IEI_CHANNELID: /* channel id */
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if((msg_ptr[2] & 0xf4) != 0x80)
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{
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cd->channelid = CHAN_NO;
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NDBGL3(L3_P_ERR, "IEI_CHANNELID, unsupported value 0x%x", msg_ptr[2]);
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}
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else
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{
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switch(msg_ptr[2] & 0x03)
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{
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case IE_CHAN_ID_NO:
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cd->channelid = CHAN_NO;
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break;
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case IE_CHAN_ID_B1:
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cd->channelid = CHAN_B1;
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break;
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case IE_CHAN_ID_B2:
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cd->channelid = CHAN_B2;
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break;
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case IE_CHAN_ID_ANY:
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cd->channelid = CHAN_ANY;
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break;
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}
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cd->channelexcl = (msg_ptr[2] & 0x08) >> 3;
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NDBGL3(L3_P_MSG, "IEI_CHANNELID - channel %d, exclusive = %d", cd->channelid, cd->channelexcl);
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/* if this is a setup message, reserve channel */
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if(cd->event == EV_SETUP)
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{
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if((cd->channelid == CHAN_B1) || (cd->channelid == CHAN_B2))
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{
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if (i4b_l2_channel_get_state(unit, cd->channelid) == BCH_ST_FREE)
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i4b_l2_channel_set_state(unit, cd->channelid, BCH_ST_RSVD);
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else
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NDBGL3(L3_P_ERR, "IE ChannelID, Channel NOT free!!");
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}
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else if(cd->channelid == CHAN_NO)
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{
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NDBGL3(L3_P_MSG, "IE ChannelID, SETUP with channel = No channel (CW)");
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}
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else /* cd->channelid == CHAN_ANY */
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{
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NDBGL3(L3_P_ERR, "ERROR: IE ChannelID, SETUP with channel = Any channel!");
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}
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}
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}
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break;
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case IEI_PROGRESSI: /* progress indicator */
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NDBGL3(L3_P_MSG, "IEI_PROGRESSINDICATOR");
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break;
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case IEI_NETSPCFAC: /* network specific fac */
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NDBGL3(L3_P_MSG, "IEI_NETSPCFAC");
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break;
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case IEI_NOTIFIND: /* notification indicator */
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NDBGL3(L3_P_MSG, "IEI_NOTIFICATION_INDICATOR");
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break;
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case IEI_DISPLAY: /* display */
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memcpy(cd->display, &msg_ptr[2], min(DISPLAY_MAX, msg_ptr[1]));
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cd->display[min(DISPLAY_MAX, msg_ptr[1])] = '\0';
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NDBGL3(L3_P_MSG, "IEI_DISPLAY = %s", cd->display);
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break;
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case IEI_DATETIME: /* date/time */
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i = 2;
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j = msg_ptr[1];
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p = &(cd->datetime[0]);
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*p = '\0';
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for(j = msg_ptr[1]; j > 0; j--, i++)
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sprintf(p+strlen(p), "%02d", msg_ptr[i]);
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NDBGL3(L3_P_MSG, "IEI_DATETIME = %s", cd->datetime);
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break;
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case IEI_KEYPAD: /* keypad facility */
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NDBGL3(L3_P_MSG, "IEI_KEYPAD_FACILITY");
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break;
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case IEI_SIGNAL: /* signal type */
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NDBGL3(L3_P_MSG, "IEI_SIGNAL = %d", msg_ptr[2]);
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break;
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case IEI_INFRATE: /* information rate */
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NDBGL3(L3_P_MSG, "IEI_INFORMATION_RATE");
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break;
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case IEI_ETETDEL: /* end to end transit delay */
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NDBGL3(L3_P_MSG, "IEI_END_TO_END_TRANSIT_DELAY");
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break;
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case IEI_CUG: /* closed user group */
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NDBGL3(L3_P_MSG, "IEI_CLOSED_USER_GROUP");
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break;
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case IEI_CALLINGPN: /* calling party no */
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if(msg_ptr[2] & 0x80) /* no presentation/screening indicator ? */
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{
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memcpy(cd->src_telno, &msg_ptr[3], min(TELNO_MAX, msg_ptr[1]-1));
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cd->src_telno[min(TELNO_MAX, msg_ptr[1] - 1)] = '\0';
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cd->scr_ind = SCR_NONE;
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cd->prs_ind = PRS_NONE;
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}
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else
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{
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memcpy(cd->src_telno, &msg_ptr[4], min(TELNO_MAX, msg_ptr[1]-2));
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cd->src_telno[min(TELNO_MAX, msg_ptr[1] - 2)] = '\0';
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cd->scr_ind = (msg_ptr[3] & 0x03) + SCR_USR_NOSC;
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cd->prs_ind = ((msg_ptr[3] >> 5) & 0x03) + PRS_ALLOWED;
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}
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NDBGL3(L3_P_MSG, "IEI_CALLINGPN = %s", cd->src_telno);
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break;
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case IEI_CALLINGPS: /* calling party subaddress */
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NDBGL3(L3_P_MSG, "IEI_CALLINGPS");
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break;
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case IEI_CALLEDPN: /* called party number */
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memcpy(cd->dst_telno, &msg_ptr[3], min(TELNO_MAX, msg_ptr[1]-1));
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cd->dst_telno[min(TELNO_MAX, msg_ptr [1] - 1)] = '\0';
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NDBGL3(L3_P_MSG, "IEI_CALLED = %s", cd->dst_telno);
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break;
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case IEI_CALLEDPS: /* called party subaddress */
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NDBGL3(L3_P_MSG, "IEI_CALLEDPS");
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break;
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case IEI_REDIRNO: /* redirecting number */
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NDBGL3(L3_P_MSG, "IEI_REDIRECTING_NUMBER");
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break;
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case IEI_TRNSEL: /* transit network selection */
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NDBGL3(L3_P_MSG, "IEI_TRANSIT_NETWORK_SELECTION");
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break;
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case IEI_RESTARTI: /* restart indicator */
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NDBGL3(L3_P_MSG, "IEI_RESTART_INDICATOR");
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break;
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case IEI_LLCOMPAT: /* low layer compat */
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NDBGL3(L3_P_MSG, "IEI_LLCOMPAT");
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break;
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|
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case IEI_HLCOMPAT: /* high layer compat */
|
|
NDBGL3(L3_P_MSG, "IEI_HLCOMPAT");
|
|
break;
|
|
|
|
case IEI_USERUSER: /* user-user */
|
|
NDBGL3(L3_P_MSG, "IEI_USER_USER");
|
|
break;
|
|
|
|
case IEI_ESCAPE: /* escape for extension */
|
|
NDBGL3(L3_P_MSG, "IEI_ESCAPE");
|
|
break;
|
|
|
|
/*********/
|
|
/* Q.932 */
|
|
/*********/
|
|
case IEI_FACILITY: /* facility */
|
|
NDBGL3(L3_P_MSG, "IEI_FACILITY");
|
|
if(i4b_aoc(msg_ptr, cd) > -1)
|
|
i4b_l4_charging_ind(cd);
|
|
break;
|
|
|
|
/*********/
|
|
/* Q.95x */
|
|
/*********/
|
|
case IEI_CONCTDNO: /* connected number */
|
|
NDBGL3(L3_P_MSG, "IEI_CONCTDNO");
|
|
break;
|
|
|
|
|
|
default:
|
|
NDBGL3(L3_P_ERR, "Unknown IE %d - ", *msg_ptr);
|
|
i4b_print_frame(msg_ptr[1]+2, msg_ptr);
|
|
break;
|
|
}
|
|
return(msg_ptr[1] + 2);
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*
|
|
* decode and process one Q.931 codeset 0 information element
|
|
*---------------------------------------------------------------------------*/
|
|
void
|
|
i4b_decode_q931_message(int unit, call_desc_t *cd, u_char message_type)
|
|
{
|
|
char *m = NULL;
|
|
|
|
cd->event = EV_ILL;
|
|
|
|
switch(message_type)
|
|
{
|
|
/* call establishment */
|
|
|
|
case ALERT:
|
|
cd->event = EV_ALERT;
|
|
m = "ALERT";
|
|
break;
|
|
|
|
case CALL_PROCEEDING:
|
|
cd->event = EV_CALLPRC;
|
|
m = "CALL_PROCEEDING";
|
|
break;
|
|
|
|
case PROGRESS:
|
|
cd->event = EV_PROGIND;
|
|
m = "PROGRESS";
|
|
break;
|
|
|
|
case SETUP:
|
|
m = "SETUP";
|
|
cd->bprot = BPROT_NONE;
|
|
cd->cause_in = 0;
|
|
cd->cause_out = 0;
|
|
cd->dst_telno[0] = '\0';
|
|
cd->src_telno[0] = '\0';
|
|
cd->channelid = CHAN_NO;
|
|
cd->channelexcl = 0;
|
|
cd->display[0] = '\0';
|
|
cd->datetime[0] = '\0';
|
|
cd->event = EV_SETUP;
|
|
break;
|
|
|
|
case CONNECT:
|
|
m = "CONNECT";
|
|
cd->datetime[0] = '\0';
|
|
cd->event = EV_CONNECT;
|
|
break;
|
|
|
|
case SETUP_ACKNOWLEDGE:
|
|
m = "SETUP_ACKNOWLEDGE";
|
|
cd->event = EV_SETUPAK;
|
|
break;
|
|
|
|
case CONNECT_ACKNOWLEDGE:
|
|
m = "CONNECT_ACKNOWLEDGE";
|
|
cd->event = EV_CONACK;
|
|
break;
|
|
|
|
/* call information */
|
|
|
|
case USER_INFORMATION:
|
|
m = "USER_INFORMATION";
|
|
break;
|
|
|
|
case SUSPEND_REJECT:
|
|
m = "SUSPEND_REJECT";
|
|
break;
|
|
|
|
case RESUME_REJECT:
|
|
m = "RESUME_REJECT";
|
|
break;
|
|
|
|
case HOLD:
|
|
m = "HOLD";
|
|
break;
|
|
|
|
case SUSPEND:
|
|
m = "SUSPEND";
|
|
break;
|
|
|
|
case RESUME:
|
|
m = "RESUME";
|
|
break;
|
|
|
|
case HOLD_ACKNOWLEDGE:
|
|
m = "HOLD_ACKNOWLEDGE";
|
|
break;
|
|
|
|
case SUSPEND_ACKNOWLEDGE:
|
|
m = "SUSPEND_ACKNOWLEDGE";
|
|
break;
|
|
|
|
case RESUME_ACKNOWLEDGE:
|
|
m = "RESUME_ACKNOWLEDGE";
|
|
break;
|
|
|
|
case HOLD_REJECT:
|
|
m = "HOLD_REJECT";
|
|
break;
|
|
|
|
case RETRIEVE:
|
|
m = "RETRIEVE";
|
|
break;
|
|
|
|
case RETRIEVE_ACKNOWLEDGE:
|
|
m = "RETRIEVE_ACKNOWLEDGE";
|
|
break;
|
|
|
|
case RETRIEVE_REJECT:
|
|
m = "RETRIEVE_REJECT";
|
|
break;
|
|
|
|
/* call clearing */
|
|
|
|
case DISCONNECT:
|
|
m = "DISCONNECT";
|
|
cd->event = EV_DISCONN;
|
|
break;
|
|
|
|
case RESTART:
|
|
m = "RESTART";
|
|
break;
|
|
|
|
case RELEASE:
|
|
m = "RELEASE";
|
|
cd->event = EV_RELEASE;
|
|
break;
|
|
|
|
case RESTART_ACKNOWLEDGE:
|
|
m = "RESTART_ACKNOWLEDGE";
|
|
break;
|
|
|
|
case RELEASE_COMPLETE:
|
|
m = "RELEASE_COMPLETE";
|
|
cd->event = EV_RELCOMP;
|
|
break;
|
|
|
|
/* misc messages */
|
|
|
|
case SEGMENT:
|
|
m = "SEGMENT";
|
|
break;
|
|
|
|
case FACILITY:
|
|
m = "FACILITY";
|
|
cd->event = EV_FACILITY;
|
|
break;
|
|
|
|
case REGISTER:
|
|
m = "REGISTER";
|
|
break;
|
|
|
|
case NOTIFY:
|
|
m = "NOTIFY";
|
|
break;
|
|
|
|
case STATUS_ENQUIRY:
|
|
m = "STATUS_ENQUIRY";
|
|
cd->event = EV_STATENQ;
|
|
break;
|
|
|
|
case CONGESTION_CONTROL:
|
|
m = "CONGESTION_CONTROL";
|
|
break;
|
|
|
|
case INFORMATION:
|
|
m = "INFORMATION";
|
|
cd->event = EV_INFO;
|
|
break;
|
|
|
|
case STATUS:
|
|
m = "STATUS";
|
|
cd->event = EV_STATUS;
|
|
break;
|
|
|
|
default:
|
|
NDBGL3(L3_P_ERR, "unit %d, cr = 0x%02x, msg = 0x%02x", unit, cd->cr, message_type);
|
|
break;
|
|
}
|
|
if(m)
|
|
{
|
|
NDBGL3(L3_PRIM, "%s: unit %d, cr = 0x%02x\n", m, unit, cd->cr);
|
|
}
|
|
}
|
|
|
|
#endif /* NI4BQ931 > 0 */
|