sys/net/i4b/layer3/i4b_l3fsm.c

   1 /*
   2  * Copyright (c) 1997, 2000 Hellmuth Michaelis. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  14  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  16  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  17  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  18  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  19  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  20  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  21  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  22  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  23  * SUCH DAMAGE.
  24  *
  25  *---------------------------------------------------------------------------
  26  *
  27  *      i4b_l3fsm.c - layer 3 FSM
  28  *      -------------------------
  29  *
  30  *      $Id: i4b_l3fsm.c,v 1.22 2000/08/24 11:48:58 hm Exp $
  31  *
  32  * $FreeBSD: src/sys/i4b/layer3/i4b_l3fsm.c,v 1.6.2.1 2001/08/10 14:08:42 obrien Exp $
  33  * $DragonFly: src/sys/net/i4b/layer3/i4b_l3fsm.c,v 1.4 2004/02/13 17:45:50 joerg Exp $
  34  *
  35  *      last edit-date: [Thu Oct 12 17:58:35 2000]
  36  *
  37  *---------------------------------------------------------------------------*/
  38
  39 #if defined(__DragonFly__) || defined(__FreeBSD__)
  40 #include "use_i4bq931.h"
  41 #else
  42 #define NI4BQ931        1
  43 #endif
  44 #if NI4BQ931 > 0
  45
  46 #include <sys/param.h>
  47 #include <sys/systm.h>
  48 #include <sys/mbuf.h>
  49
  50 #if defined(__NetBSD__) && __NetBSD_Version__ >= 104230000
  51 #include <sys/callout.h>
  52 #endif
  53
  54 #if defined(__DragonFly__) || defined(__FreeBSD__)
  55 #include <net/i4b/include/machine/i4b_debug.h>
  56 #include <net/i4b/include/machine/i4b_ioctl.h>
  57 #include <net/i4b/include/machine/i4b_cause.h>
  58 #else
  59 #include <i4b/i4b_debug.h>
  60 #include <i4b/i4b_ioctl.h>
  61 #include <i4b/i4b_cause.h>
  62 #endif
  63
  64 #include "../include/i4b_l2l3.h"
  65 #include "../include/i4b_l3l4.h"
  66 #include "../include/i4b_global.h"
  67
  68 #include "i4b_l3.h"
  69 #include "i4b_l3fsm.h"
  70
  71 #include "../layer4/i4b_l4.h"
  72
  73
  74 static void F_00A(call_desc_t *cd), F_00H(call_desc_t *cd), F_00I(call_desc_t *cd);
  75 static void F_00J(call_desc_t *cd);
  76
  77 static void F_01B(call_desc_t *cd), F_01K(call_desc_t *cd), F_01L(call_desc_t *cd);
  78 static void F_01M(call_desc_t *cd), F_01N(call_desc_t *cd), F_01U(call_desc_t *cd);
  79 static void F_01O(call_desc_t *cd);
  80
  81 static void F_03C(call_desc_t *cd), F_03N(call_desc_t *cd), F_03O(call_desc_t *cd);
  82 static void F_03P(call_desc_t *cd), F_03Y(call_desc_t *cd);
  83
  84 static void F_04O(call_desc_t *cd);
  85
  86 static void F_06D(call_desc_t *cd), F_06E(call_desc_t *cd), F_06F(call_desc_t *cd);
  87 static void F_06G(call_desc_t *cd), F_06J(call_desc_t *cd), F_06Q(call_desc_t *cd);
  88
  89 static void F_07E(call_desc_t *cd), F_07F(call_desc_t *cd), F_07G(call_desc_t *cd);
  90
  91 static void F_08R(call_desc_t *cd), F_08Z(call_desc_t *cd);
  92
  93 static void F_09D(call_desc_t *cd), F_09E(call_desc_t *cd), F_09F(call_desc_t *cd);
  94 static void F_09G(call_desc_t *cd);
  95
  96 static void F_11J(call_desc_t *cd), F_11Q(call_desc_t *cd), F_11V(call_desc_t *cd);
  97
  98 static void F_12C(call_desc_t *cd), F_12J(call_desc_t *cd);
  99
 100 static void F_19I(call_desc_t *cd), F_19J(call_desc_t *cd), F_19K(call_desc_t *cd);
 101 static void F_19W(call_desc_t *cd);
 102
 103 static void F_NCNA(call_desc_t *cd), F_STENQ(call_desc_t *cd), F_STAT(call_desc_t *cd);
 104 static void F_INFO(call_desc_t *cd), F_RELCP(call_desc_t *cd), F_REL(call_desc_t *cd);
 105 static void F_DISC(call_desc_t *cd), F_DCRQ(call_desc_t *cd), F_UEM(call_desc_t *cd);
 106 static void F_SIGN(call_desc_t *cd), F_DLEI(call_desc_t *cd), F_ILL(call_desc_t *cd);
 107 static void F_309TO(call_desc_t *cd), F_DECF(call_desc_t *cd), F_FCTY(call_desc_t *cd);
 108 static void F_DECF1(call_desc_t *cd), F_DECF2(call_desc_t *cd), F_DECF3(call_desc_t *cd);
 109 static void F_DLRI(call_desc_t *cd), F_DLRIA(call_desc_t *cd), F_DECF4(call_desc_t *cd);
 110
 111 static void F_308TO(call_desc_t *cd);
 112
 113 #if DO_I4B_DEBUG
 114 static char *l3state_text[N_STATES] = {
 115          "ST_U0 - Null",
 116          "ST_U1 - Out Init",
 117          "ST_U3 - Out Proc",
 118          "ST_U4 - Out Delv",
 119          "ST_U6 - In Pres",
 120          "ST_U7 - In Rxd",
 121          "ST_U8 - In ConReq",
 122          "ST_U9 - In Proc",
 123         "ST_U10 - Active",
 124         "ST_U11 - Disc Req",
 125         "ST_U12 - Disc Ind",
 126         "ST_U19 - Rel Req",
 127
 128         "ST_IWA - In Wait EST-Accept",
 129         "ST_IWR - In Wait EST-Reject",
 130         "ST_OW - Out Wait EST",
 131         "ST_IWL - In Wait EST-Alert",
 132
 133         "ST_SUSE - Subroutine sets state",
 134
 135         "Illegal State"
 136 };
 137
 138 static char *l3event_text[N_EVENTS] = {
 139         "EV_SETUPRQ - L4 SETUP REQ",    /* setup request from L4                */
 140         "EV_DISCRQ - L4 DISC REQ",      /* disconnect request from L4           */
 141         "EV_RELRQ - L4 REL REQ",        /* release request from L4              */
 142         "EV_ALERTRQ - L4 ALERT REQ",    /* alerting request from L4             */
 143         "EV_SETACRS - L4 accept RSP",   /* setup response accept from l4        */
 144         "EV_SETRJRS - L4 reject RSP",   /* setup response reject from l4        */
 145         "EV_SETDCRS - L4 ignore RSP",   /* setup response dontcare from l4      */
 146
 147         "EV_SETUP - rxd SETUP",         /* incoming SETUP message from L2       */
 148         "EV_STATUS - rxd STATUS",       /* incoming STATUS message from L2      */
 149         "EV_RELEASE - rxd REL",         /* incoming RELEASE message from L2     */
 150         "EV_RELCOMP - rxd REL COMPL",   /* incoming RELEASE COMPLETE from L2    */
 151         "EV_SETUPAK - rxd SETUP ACK",   /* incoming SETUP ACK message from L2   */
 152         "EV_CALLPRC - rxd CALL PROC",   /* incoming CALL PROCEEDING from L2     */
 153         "EV_ALERT - rxd ALERT",         /* incoming ALERT message from L2       */
 154         "EV_CONNECT - rxd CONNECT",     /* incoming CONNECT message from L2     */
 155         "EV_PROGIND - rxd PROG IND",    /* incoming Progress IND from L2        */
 156         "EV_DISCONN - rxd DISC",        /* incoming DISCONNECT message from L2  */
 157         "EV_CONACK - rxd CONN ACK",     /* incoming CONNECT ACK message from L2 */
 158         "EV_STATENQ - rxd STAT ENQ",    /* incoming STATUS ENQ message from L2  */
 159         "EV_INFO - rxd INFO",           /* incoming INFO message from L2        */
 160         "EV_FACILITY - rxd FACILITY",   /* incoming FACILITY message            */
 161
 162         "EV_T303EXP - T303 timeout",    /* Timer T303 expired                   */
 163         "EV_T305EXP - T305 timeout",    /* Timer T305 expired                   */
 164         "EV_T308EXP - T308 timeout",    /* Timer T308 expired                   */
 165         "EV_T309EXP - T309 timeout",    /* Timer T309 expired                   */
 166         "EV_T310EXP - T310 timeout",    /* Timer T310 expired                   */
 167         "EV_T313EXP - T313 timeout",    /* Timer T313 expired                   */
 168
 169         "EV_DLESTIN - L2 DL_Est_Ind",   /* dl establish indication from l2      */
 170         "EV_DLRELIN - L2 DL_Rel_Ind",   /* dl release indication from l2        */
 171         "EV_DLESTCF - L2 DL_Est_Cnf",   /* dl establish confirm from l2         */
 172         "EV_DLRELCF - L2 DL_Rel_Cnf",   /* dl release confirm from l2           */
 173
 174         "EV_ILL - Illegal event!!"      /* Illegal */
 175 };
 176 #endif
 177
 178 /*---------------------------------------------------------------------------*
 179  *      layer 3 state transition table
 180  *---------------------------------------------------------------------------*/
 181 struct l3state_tab {
 182         void (*func) (call_desc_t *);   /* function to execute */
 183         int newstate;                           /* next state */
 184 } l3state_tab[N_EVENTS][N_STATES] = {
 185
 186 /* STATE:       ST_U0                   ST_U1                   ST_U3                   ST_U4                   ST_U6                   ST_U7                   ST_U8                   ST_U9                   ST_U10                  ST_U11                  ST_U12                  ST_U19                  ST_IWA                  ST_IWR                  ST_OW                   ST_IWL                  ST_SUBSET               ST_ILL        */
 187 /* ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------*/
 188 /*EV_SETUPRQ*/  {{F_00A,  ST_SUSE},     {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL, ST_ILL},        {F_ILL, ST_ILL}},
 189 /*EV_DISCRQ */  {{F_ILL,  ST_ILL},      {F_01B,  ST_U11},       {F_DCRQ, ST_U11},       {F_DCRQ, ST_U11},       {F_ILL,  ST_ILL},       {F_DCRQ, ST_U11},       {F_DCRQ, ST_U11},       {F_DCRQ, ST_U11},       {F_DCRQ, ST_U11},       {F_ILL,  ST_ILL},       {F_NCNA, ST_U12},       {F_ILL,  ST_ILL},       {F_DCRQ, ST_U11},       {F_DCRQ, ST_U11},       {F_DCRQ, ST_U11},       {F_DCRQ, ST_U11},       {F_ILL, ST_ILL},        {F_ILL, ST_ILL}},
 190 /*EV_RELRQ  */  {{F_ILL,  ST_ILL},      {F_ILL,  ST_ILL},       {F_03C,  ST_U19},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_12C,  ST_U19},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL, ST_ILL},        {F_ILL, ST_ILL}},
 191 /*EV_ALERTRQ*/  {{F_ILL,  ST_ILL},      {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_06D,  ST_SUSE},      {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_09D,  ST_U7},        {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL, ST_ILL},        {F_ILL, ST_ILL}},
 192 /*EV_SETACRS*/  {{F_ILL,  ST_ILL},      {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_06E,  ST_SUSE},      {F_07E,  ST_U8},        {F_ILL,  ST_ILL},       {F_09E,  ST_U8},        {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL, ST_ILL},        {F_ILL, ST_ILL}},
 193 /*EV_SETRJRS*/  {{F_ILL,  ST_ILL},      {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_06F,  ST_SUSE},      {F_07F,  ST_U0},        {F_ILL,  ST_ILL},       {F_09F,  ST_U0},        {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL, ST_ILL},        {F_ILL, ST_ILL}},
 194 /*EV_SETDCRS*/  {{F_ILL,  ST_ILL},      {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_06G,  ST_U0},        {F_07G,  ST_U0},        {F_ILL,  ST_ILL},       {F_09G,  ST_U0},        {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL, ST_ILL},        {F_ILL, ST_ILL}},
 195 /* STATE:       ST_U0                   ST_U1                   ST_U3                   ST_U4                   ST_U6                   ST_U7                   ST_U8                   ST_U9                   ST_U10                  ST_U11                  ST_U12                  ST_U19                  ST_IWA                  ST_IWR                  ST_OW                   ST_IWL                  ST_SUBSET               ST_ILL        */
 196 /* ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------*/
 197 /*EV_SETUP  */  {{F_00H,  ST_U6},       {F_SIGN, ST_U1},        {F_SIGN, ST_U3},        {F_SIGN, ST_U4},        {F_SIGN, ST_U6},        {F_SIGN, ST_U7},        {F_SIGN, ST_U8},        {F_SIGN, ST_U9},        {F_SIGN, ST_U10},       {F_SIGN, ST_U11},       {F_SIGN, ST_U12},       {F_SIGN, ST_U19},       {F_SIGN, ST_IWA},       {F_SIGN, ST_IWR},       {F_SIGN, ST_OW},        {F_SIGN, ST_IWL},       {F_ILL, ST_ILL},        {F_ILL, ST_ILL}},
 198 /*EV_STATUS */  {{F_00I,  ST_SUSE},     {F_STAT, ST_SUSE},      {F_STAT, ST_SUSE},      {F_STAT, ST_SUSE},      {F_STAT, ST_SUSE},      {F_STAT, ST_SUSE},      {F_STAT, ST_SUSE},      {F_STAT, ST_SUSE},      {F_STAT, ST_SUSE},      {F_STAT, ST_SUSE},      {F_STAT, ST_SUSE},      {F_19I,  ST_SUSE},      {F_STAT, ST_SUSE},      {F_STAT, ST_SUSE},      {F_STAT, ST_SUSE},      {F_STAT, ST_SUSE},      {F_ILL, ST_ILL},        {F_ILL, ST_ILL}},
 199 /*EV_RELEASE*/  {{F_00J,  ST_U0},       {F_UEM,  ST_SUSE},      {F_REL,  ST_U0},        {F_REL,  ST_U0},        {F_06J,  ST_U0},        {F_REL,  ST_U0},        {F_REL,  ST_U0},        {F_REL,  ST_U0},        {F_REL,  ST_U0},        {F_11J,  ST_U0},        {F_12J,  ST_U0},        {F_19J,  ST_U0},        {F_REL,  ST_U0},        {F_REL,  ST_U0},        {F_REL,  ST_U0},        {F_REL,  ST_U0},        {F_ILL, ST_ILL},        {F_ILL, ST_ILL}},
 200 /*EV_RELCOMP*/  {{F_NCNA, ST_U0},       {F_01K,  ST_U0},        {F_RELCP,ST_U0},        {F_RELCP,ST_U0},        {F_RELCP,ST_U0},        {F_RELCP,ST_U0},        {F_RELCP,ST_U0},        {F_RELCP,ST_U0},        {F_RELCP,ST_U0},        {F_RELCP,ST_U0},        {F_RELCP,ST_U0},        {F_19K,  ST_U0},        {F_RELCP,ST_U0},        {F_RELCP,ST_U0},        {F_RELCP,ST_U0},        {F_RELCP,ST_U0},        {F_ILL, ST_ILL},        {F_ILL, ST_ILL}},
 201 /*EV_SETUPAK*/  {{F_UEM,  ST_SUSE},     {F_01L,  ST_U3},        {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_ILL, ST_ILL},        {F_ILL, ST_ILL}},
 202 /*EV_CALLPRC*/  {{F_UEM,  ST_SUSE},     {F_01M,  ST_U3},        {F_NCNA, ST_U3},        {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_ILL, ST_ILL},        {F_ILL, ST_ILL}},
 203 /*EV_ALERT  */  {{F_UEM,  ST_SUSE},     {F_01N,  ST_U4},        {F_03N,  ST_U4},        {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_ILL, ST_ILL},        {F_ILL, ST_ILL}},
 204 /*EV_CONNECT*/  {{F_UEM,  ST_SUSE},     {F_01O,  ST_U10},       {F_03O,  ST_U10},       {F_04O,  ST_U10},       {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_ILL, ST_ILL},        {F_ILL, ST_ILL}},
 205 /*EV_PROGIND*/  {{F_UEM,  ST_SUSE},     {F_UEM,  ST_SUSE},      {F_03P,  ST_U3},        {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_ILL, ST_ILL},        {F_ILL, ST_ILL}},
 206 /*EV_DISCONN*/  {{F_UEM,  ST_SUSE},     {F_UEM,  ST_SUSE},      {F_DISC, ST_U12},       {F_DISC, ST_U12},       {F_06Q,  ST_U12},       {F_DISC, ST_U12},       {F_DISC, ST_U12},       {F_DISC, ST_U12},       {F_DISC, ST_U12},       {F_11Q,  ST_U19},       {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_DISC, ST_U12},       {F_DISC, ST_U12},       {F_DISC, ST_U12},       {F_DISC, ST_U12},       {F_ILL, ST_ILL},        {F_ILL, ST_ILL}},
 207 /*EV_CONACK */  {{F_UEM,  ST_SUSE},     {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_08R,  ST_U10},       {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_UEM,  ST_SUSE},      {F_ILL, ST_ILL},        {F_ILL, ST_ILL}},
 208 /*EV_STATENQ*/  {{F_STENQ,ST_U0},       {F_STENQ,ST_U1},        {F_STENQ,ST_U3},        {F_STENQ,ST_U4},        {F_STENQ,ST_U6},        {F_STENQ,ST_U7},        {F_STENQ,ST_U8},        {F_STENQ,ST_U9},        {F_STENQ,ST_U10},       {F_STENQ,ST_U11},       {F_STENQ,ST_U12},       {F_STENQ,ST_U19},       {F_STENQ,ST_IWA},       {F_STENQ,ST_IWR},       {F_STENQ,ST_OW},        {F_STENQ,ST_OW},        {F_ILL, ST_ILL},        {F_ILL, ST_ILL}},
 209 /*EV_INFO   */  {{F_UEM,  ST_SUSE},     {F_UEM,  ST_SUSE},      {F_INFO, ST_U3},        {F_INFO, ST_U4},        {F_UEM,  ST_SUSE},      {F_INFO, ST_U7},        {F_INFO, ST_U8},        {F_INFO, ST_U9},        {F_INFO, ST_U10},       {F_INFO, ST_U11},       {F_INFO, ST_U12},       {F_UEM,  ST_SUSE},      {F_INFO, ST_IWA},       {F_INFO, ST_IWR},       {F_INFO, ST_OW},        {F_INFO, ST_OW},        {F_ILL, ST_ILL},        {F_ILL, ST_ILL}},
 210 /*EV_FACILITY*/ {{F_FCTY, ST_SUSE},     {F_FCTY, ST_SUSE},      {F_FCTY, ST_SUSE},      {F_FCTY, ST_SUSE},      {F_FCTY, ST_SUSE},      {F_FCTY, ST_SUSE},      {F_FCTY, ST_SUSE},      {F_FCTY, ST_SUSE},      {F_FCTY, ST_SUSE},      {F_FCTY, ST_SUSE},      {F_FCTY, ST_SUSE},      {F_FCTY, ST_SUSE},      {F_FCTY, ST_SUSE},      {F_FCTY, ST_SUSE},      {F_FCTY, ST_SUSE},      {F_FCTY, ST_SUSE},      {F_ILL, ST_ILL},        {F_ILL, ST_ILL}},
 211 /* STATE:       ST_U0                   ST_U1                   ST_U3                   ST_U4                   ST_U6                   ST_U7                   ST_U8                   ST_U9                   ST_U10                  ST_U11                  ST_U12                  ST_U19                  ST_IWA                  ST_IWR                  ST_OW                   ST_IWL                  ST_SUBSET               ST_ILL        */
 212 /* ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------*/
 213 /*EV_T303EXP*/  {{F_ILL,  ST_ILL},      {F_01U,  ST_SUSE},      {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL, ST_ILL},        {F_ILL, ST_ILL}},
 214 /*EV_T305EXP*/  {{F_ILL,  ST_ILL},      {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_11V,  ST_U19},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL, ST_ILL},        {F_ILL, ST_ILL}},
 215 /*EV_T308EXP*/  {{F_ILL,  ST_ILL},      {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_308TO,ST_ILL},       {F_19W,  ST_SUSE},      {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL, ST_ILL},        {F_ILL, ST_ILL}},
 216 /*EV_T309EXP*/  {{F_309TO,ST_U0},       {F_309TO,ST_U0},        {F_309TO,ST_U0},        {F_309TO,ST_U0},        {F_309TO,ST_U0},        {F_309TO,ST_U0},        {F_309TO,ST_U0},        {F_309TO,ST_U0},        {F_309TO,ST_U0},        {F_309TO,ST_U0},        {F_309TO,ST_U0},        {F_309TO,ST_U0},        {F_309TO,ST_U0},        {F_309TO,ST_U0},        {F_309TO,ST_U0},        {F_309TO,ST_U0},        {F_ILL, ST_ILL},        {F_ILL, ST_ILL}},
 217 /*EV_T310EXP*/  {{F_ILL,  ST_ILL},      {F_ILL,  ST_ILL},       {F_03Y,  ST_U11},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL, ST_ILL},        {F_ILL, ST_ILL}},
 218 /*EV_T313EXP*/  {{F_ILL,  ST_ILL},      {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_08Z,  ST_U11},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL, ST_ILL},        {F_ILL, ST_ILL}},
 219 /* STATE:       ST_U0                   ST_U1                   ST_U3                   ST_U4                   ST_U6                   ST_U7                   ST_U8                   ST_U9                   ST_U10                  ST_U11                  ST_U12                  ST_U19                  ST_IWA                  ST_IWR                  ST_OW                   ST_IWL                  ST_SUBSET               ST_ILL        */
 220 /* ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------*/
 221 /*EV_DLESTIN*/  {{F_ILL,  ST_ILL},      {F_DLEI, ST_U1},        {F_DLEI, ST_U3},        {F_DLEI, ST_U4},        {F_DLEI, ST_U1},        {F_DLEI, ST_U1},        {F_DLEI, ST_U1},        {F_DLEI, ST_U1},        {F_DLEI, ST_U1},        {F_DLEI, ST_U1},        {F_DLEI, ST_U1},        {F_DLEI, ST_U1},        {F_DLEI, ST_U1},        {F_DLEI, ST_U1},        {F_DLEI, ST_U1},        {F_DLEI, ST_U1},        {F_ILL, ST_ILL},        {F_ILL, ST_ILL}},
 222 /*EV_DLRELIN*/  {{F_NCNA, ST_U0},       {F_DLRIA, ST_OW},       {F_DLRI, ST_U0},        {F_DLRI, ST_U0},        {F_DLRI, ST_U0},        {F_DLRI, ST_U0},        {F_DLRI, ST_U0},        {F_DLRI, ST_U0},        {F_DLRIA,ST_U10},       {F_DLRI, ST_U0},        {F_DLRI, ST_U0},        {F_DLRI, ST_U0},        {F_DLRI, ST_U0},        {F_DLRI, ST_U0},        {F_DLRI, ST_U0},        {F_DLRI, ST_U0},        {F_ILL, ST_ILL},        {F_ILL, ST_ILL}},
 223 /*EV_DLESTCF*/  {{F_DECF, ST_SUSE},     {F_DECF, ST_SUSE},      {F_DECF, ST_SUSE},      {F_DECF, ST_SUSE},      {F_DECF, ST_SUSE},      {F_DECF, ST_SUSE},      {F_DECF, ST_SUSE},      {F_DECF, ST_SUSE},      {F_DECF, ST_SUSE},      {F_DECF, ST_SUSE},      {F_DECF, ST_SUSE},      {F_DECF, ST_SUSE},      {F_DECF2,ST_U8},        {F_DECF3,ST_U0},        {F_DECF1,ST_U1},        {F_DECF4,ST_U7},        {F_ILL, ST_ILL},        {F_ILL, ST_ILL}},
 224 /*EV_DLRELCF*/  {{F_ILL,  ST_ILL},      {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL, ST_ILL},        {F_ILL, ST_ILL}},
 225 /*EV_ILL    */  {{F_ILL,  ST_ILL},      {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL,  ST_ILL},       {F_ILL, ST_ILL},        {F_ILL, ST_ILL}}
 226 };
 227
 228 /*---------------------------------------------------------------------------*
 229  *      event handler
 230  *---------------------------------------------------------------------------*/
 231 void next_l3state(call_desc_t *cd, int event)
 232 {
 233         int currstate, newstate;
 234
 235         if(event > N_EVENTS)
 236                 panic("i4b_l3fsm.c: event > N_EVENTS\n");
 237
 238         currstate = cd->Q931state;
 239
 240         if(currstate > N_STATES)
 241                 panic("i4b_l3fsm.c: currstate > N_STATES\n");
 242
 243         newstate = l3state_tab[event][currstate].newstate;
 244
 245         if(newstate > N_STATES)
 246                 panic("i4b_l3fsm.c: newstate > N_STATES\n");
 247
 248         NDBGL3(L3_F_MSG, "L3 FSM event [%s]: [%s => %s]",
 249                                 l3event_text[event],
 250                                 l3state_text[currstate],
 251                                 l3state_text[newstate]);
 252
 253         /* execute function */
 254
 255         (*l3state_tab[event][currstate].func)(cd);
 256
 257         if(newstate == ST_ILL)
 258         {
 259                 newstate = currstate;
 260                 NDBGL3(L3_F_ERR, "FSM illegal state, state = %s, event = %s!",
 261                                 l3state_text[newstate],
 262                                 l3event_text[event]);
 263         }
 264
 265         if(newstate != ST_SUSE)
 266                 cd->Q931state = newstate;
 267 }
 268
 269 #if DO_I4B_DEBUG
 270 /*---------------------------------------------------------------------------*
 271  *      return pointer to current state description
 272  *---------------------------------------------------------------------------*/
 273 char *print_l3state(call_desc_t *cd)
 274 {
 275         return((char *) l3state_text[cd->Q931state]);
 276 }
 277 #endif
 278
 279 /*---------------------------------------------------------------------------*
 280  *      L3 FSM state U0 event L4 setup req
 281  *---------------------------------------------------------------------------*/
 282 static void F_00A(call_desc_t *cd)
 283 {
 284         int s;
 285         NDBGL3(L3_F_MSG, "FSM function F_00A executing");
 286
 287         cd->T303_first_to = 1;
 288         T303_start(cd);
 289
 290         s = SPLI4B();
 291         if(i4b_get_dl_stat(cd) == DL_DOWN)
 292         {
 293                 splx(s);
 294                 DL_Est_Req(ctrl_desc[cd->controller].unit);
 295                 cd->Q931state = ST_OW;
 296         }
 297         else
 298         {
 299                 cd->Q931state = ST_U1;
 300                 splx(s);
 301                 i4b_l3_tx_setup(cd);
 302         }
 303 }
 304
 305 /*---------------------------------------------------------------------------*
 306  *      L3 FSM state U0 event SETUP from L2
 307  *---------------------------------------------------------------------------*/
 308 static void F_00H(call_desc_t *cd)
 309 {
 310         NDBGL3(L3_F_MSG, "FSM function F_00H executing");
 311         i4b_l4_connect_ind(cd); /* tell l4 we have an incoming setup */
 312 }
 313
 314 /*---------------------------------------------------------------------------*
 315  *      L3 FSM state U0 event STATUS from L2
 316  *---------------------------------------------------------------------------*/
 317 static void F_00I(call_desc_t *cd)
 318 {
 319         NDBGL3(L3_F_MSG, "FSM function F_00I executing");
 320
 321         if(cd->call_state != 0)
 322         {
 323                 cd->cause_out = 101;
 324                 i4b_l3_tx_release_complete(cd, 1);      /* 1 = send cause */
 325         }
 326         cd->Q931state = ST_U0;
 327 }
 328
 329 /*---------------------------------------------------------------------------*
 330  *      L3 FSM state U0 event RELEASE from L2
 331  *---------------------------------------------------------------------------*/
 332 static void F_00J(call_desc_t *cd)
 333 {
 334         NDBGL3(L3_F_MSG, "FSM function F_00J executing");
 335         i4b_l3_tx_release_complete(cd, 0);      /* 0 = don't send cause */
 336 }
 337
 338 /*---------------------------------------------------------------------------*
 339  *      L3 FSM state U1 event disconnect req from L4
 340  *---------------------------------------------------------------------------*/
 341 static void F_01B(call_desc_t *cd)
 342 {
 343         NDBGL3(L3_F_MSG, "FSM function F_01B executing");
 344         /* cause from L4 */
 345         i4b_l3_tx_disconnect(cd);
 346         T303_stop(cd);
 347         T305_start(cd);
 348 }
 349
 350 /*---------------------------------------------------------------------------*
 351  *      L3 FSM state U1 event RELEASE COMPLETE from L2
 352  *---------------------------------------------------------------------------*/
 353 static void F_01K(call_desc_t *cd)
 354 {
 355         NDBGL3(L3_F_MSG, "FSM function F_01K executing");
 356         T303_stop(cd);
 357         i4b_l4_disconnect_ind(cd);      /* tell l4 we were rejected */
 358         freecd_by_cd(cd);
 359 }
 360
 361 /*---------------------------------------------------------------------------*
 362  *      L3 FSM state U1 event SETUP ACK from L2
 363  *---------------------------------------------------------------------------*/
 364 static void F_01L(call_desc_t *cd)
 365 {
 366         NDBGL3(L3_F_MSG, "FSM function F_01L executing");
 367         T303_stop(cd);
 368
 369         /*
 370          * since this implementation does NOT support overlap sending,
 371          * we react here as if we received a CALL PROCEEDING because
 372          * several PBX's react with a SETUP ACK even if the called
 373          * number is complete AND we sent a SENDING COMPLETE in the
 374          * preceding SETUP message. (-hm)
 375          */
 376
 377         T310_start(cd);
 378         i4b_l4_proceeding_ind(cd);
 379 }
 380
 381 /*---------------------------------------------------------------------------*
 382  *      L3 FSM state U1 event CALL PROCEEDING from L2
 383  *---------------------------------------------------------------------------*/
 384 static void F_01M(call_desc_t *cd)
 385 {
 386         NDBGL3(L3_F_MSG, "FSM function F_01M executing");
 387         T303_stop(cd);
 388         T310_start(cd);
 389         i4b_l4_proceeding_ind(cd);
 390 }
 391
 392 /*---------------------------------------------------------------------------*
 393  *      L3 FSM state U1 event ALERT from L2  (XXX !)
 394  *---------------------------------------------------------------------------*/
 395 static void F_01N(call_desc_t *cd)
 396 {
 397         NDBGL3(L3_F_MSG, "FSM function F_01N executing");
 398         T303_stop(cd);
 399         i4b_l4_alert_ind(cd);
 400 }
 401
 402 /*---------------------------------------------------------------------------*
 403  *      L3 FSM state U1 event CONNECT from L2 (XXX !)
 404  *---------------------------------------------------------------------------*/
 405 static void F_01O(call_desc_t *cd)
 406 {
 407         NDBGL3(L3_F_MSG, "FSM function F_01O executing");
 408         T303_stop(cd);
 409         i4b_l3_tx_connect_ack(cd);
 410         i4b_l4_connect_active_ind(cd);
 411 }
 412
 413 /*---------------------------------------------------------------------------*
 414  *      L3 FSM state U1 event T303 timeout
 415  *---------------------------------------------------------------------------*/
 416 static void F_01U(call_desc_t *cd)
 417 {
 418         NDBGL3(L3_F_MSG, "FSM function F_01U executing");
 419         if(cd->T303_first_to == 1)
 420         {
 421                 cd->T303_first_to = 0;
 422                 i4b_l3_tx_setup(cd);
 423                 T303_start(cd);
 424                 cd->Q931state = ST_U1;
 425         }
 426         else
 427         {
 428                 i4b_l4_disconnect_ind(cd);
 429                 freecd_by_cd(cd);
 430                 cd->Q931state = ST_U0;
 431         }
 432 }
 433
 434 /*---------------------------------------------------------------------------*
 435  *      L3 FSM state U3 event release req from L4
 436  *---------------------------------------------------------------------------*/
 437 static void F_03C(call_desc_t *cd)
 438 {
 439         NDBGL3(L3_F_MSG, "FSM function F_03C executing");
 440         T310_stop(cd);
 441         cd->cause_out = 6;
 442         i4b_l3_tx_release(cd, 1);       /* 0 = don't send cause */
 443         cd->T308_first_to = 1;
 444         T308_start(cd);
 445 }
 446
 447 /*---------------------------------------------------------------------------*
 448  *      L3 FSM state U3 event ALERT from L2
 449  *---------------------------------------------------------------------------*/
 450 static void F_03N(call_desc_t *cd)
 451 {
 452         NDBGL3(L3_F_MSG, "FSM function F_03N executing");
 453         T310_stop(cd);
 454         i4b_l4_alert_ind(cd);
 455 }
 456
 457 /*---------------------------------------------------------------------------*
 458  *      L3 FSM state U3 event CONNECT from L2
 459  *---------------------------------------------------------------------------*/
 460 static void F_03O(call_desc_t *cd)
 461 {
 462         NDBGL3(L3_F_MSG, "FSM function F_03O executing");
 463         T310_stop(cd);
 464         i4b_l3_tx_connect_ack(cd);      /* CONNECT ACK to network */
 465         i4b_l4_connect_active_ind(cd);
 466 }
 467
 468 /*---------------------------------------------------------------------------*
 469  *      L3 FSM state U3 event PROGESS IND from L2
 470  *---------------------------------------------------------------------------*/
 471 static void F_03P(call_desc_t *cd)
 472 {
 473         NDBGL3(L3_F_MSG, "FSM function F_03P executing");
 474         T310_stop(cd);
 475 #ifdef NOTDEF
 476         i4b_l4_progress_ind(cd);
 477 #endif
 478 }
 479
 480 /*---------------------------------------------------------------------------*
 481  *      L3 FSM state U3 event T310 timeout
 482  *---------------------------------------------------------------------------*/
 483 static void F_03Y(call_desc_t *cd)
 484 {
 485         NDBGL3(L3_F_MSG, "FSM function F_03Y executing");
 486         cd->cause_out = 102;    /* recovery on timer expiry */
 487         i4b_l3_tx_disconnect(cd);
 488         T305_start(cd);
 489         i4b_l4_disconnect_ind(cd);
 490 }
 491
 492 /*---------------------------------------------------------------------------*
 493  *      L3 FSM state U4 event CONNECT from L2
 494  *---------------------------------------------------------------------------*/
 495 static void F_04O(call_desc_t *cd)
 496 {
 497         NDBGL3(L3_F_MSG, "FSM function F_04O executing");
 498         i4b_l3_tx_connect_ack(cd);      /* CONNECT ACK to network */
 499         i4b_l4_connect_active_ind(cd);
 500 }
 501
 502 /*---------------------------------------------------------------------------*
 503  *      L3 FSM state U6 event alert req from L4
 504  *---------------------------------------------------------------------------*/
 505 static void F_06D(call_desc_t *cd)
 506 {
 507         NDBGL3(L3_F_MSG, "FSM function F_06D executing");
 508
 509         if(i4b_get_dl_stat(cd) == DL_DOWN)
 510         {
 511                 DL_Est_Req(ctrl_desc[cd->controller].unit);
 512                 cd->Q931state = ST_IWL;
 513         }
 514         else
 515         {
 516                 i4b_l3_tx_alert(cd);
 517                 cd->Q931state = ST_U7;
 518         }
 519 }
 520
 521 /*---------------------------------------------------------------------------*
 522  *      L3 FSM state U6 event incoming setup accept from L4
 523  *---------------------------------------------------------------------------*/
 524 static void F_06E(call_desc_t *cd)
 525 {
 526         NDBGL3(L3_F_MSG, "FSM function F_06E executing");
 527
 528         if(i4b_get_dl_stat(cd) == DL_DOWN)
 529         {
 530                 DL_Est_Req(ctrl_desc[cd->controller].unit);
 531                 cd->Q931state = ST_IWA;
 532         }
 533         else
 534         {
 535                 i4b_l3_tx_connect(cd);
 536                 cd->Q931state = ST_U8;
 537         }
 538         T313_start(cd);
 539 }
 540
 541 /*---------------------------------------------------------------------------*
 542  *      L3 FSM state U6 event incoming setup reject from L4
 543  *---------------------------------------------------------------------------*/
 544 static void F_06F(call_desc_t *cd)
 545 {
 546         NDBGL3(L3_F_MSG, "FSM function F_06F executing");
 547
 548         if(i4b_get_dl_stat(cd) == DL_DOWN)
 549         {
 550                 DL_Est_Req(ctrl_desc[cd->controller].unit);
 551                 cd->Q931state = ST_IWR;
 552         }
 553         else
 554         {
 555                 int s = SPLI4B();
 556                 i4b_l3_tx_release_complete(cd, 1);
 557                 cd->Q931state = ST_U0;
 558                 freecd_by_cd(cd);
 559                 splx(s);
 560         }
 561 }
 562
 563 /*---------------------------------------------------------------------------*
 564  *      L3 FSM state U6 event incoming setup ignore from L4
 565  *---------------------------------------------------------------------------*/
 566 static void F_06G(call_desc_t *cd)
 567 {
 568         NDBGL3(L3_F_MSG, "FSM function F_06G executing");
 569         freecd_by_cd(cd);
 570 }
 571
 572 /*---------------------------------------------------------------------------*
 573  *      L3 FSM state U6 event RELEASE from L2
 574  *---------------------------------------------------------------------------*/
 575 static void F_06J(call_desc_t *cd)
 576 {
 577         NDBGL3(L3_F_MSG, "FSM function F_06J executing");
 578         i4b_l3_tx_release_complete(cd, 0);
 579         i4b_l4_disconnect_ind(cd);
 580         freecd_by_cd(cd);
 581 }
 582
 583 /*---------------------------------------------------------------------------*
 584  *      L3 FSM state U6 event DISCONNECT from L2
 585  *---------------------------------------------------------------------------*/
 586 static void F_06Q(call_desc_t *cd)
 587 {
 588         NDBGL3(L3_F_MSG, "FSM function F_06Q executing");
 589         i4b_l4_disconnect_ind(cd);
 590 }
 591
 592 /*---------------------------------------------------------------------------*
 593  *      L3 FSM state U7 event setup response accept from L4
 594  *---------------------------------------------------------------------------*/
 595 static void F_07E(call_desc_t *cd)
 596 {
 597         NDBGL3(L3_F_MSG, "FSM function F_07E executing");
 598         i4b_l3_tx_connect(cd);
 599         T313_start(cd);
 600 }
 601
 602 /*---------------------------------------------------------------------------*
 603  *      L3 FSM state U7 event setup response reject from L4
 604  *---------------------------------------------------------------------------*/
 605 static void F_07F(call_desc_t *cd)
 606 {
 607         NDBGL3(L3_F_MSG, "FSM function F_07F executing");
 608         i4b_l3_tx_release_complete(cd, 1);
 609         freecd_by_cd(cd);
 610 }
 611
 612 /*---------------------------------------------------------------------------*
 613  *      L3 FSM state U7 event setup response ignore from L4
 614  *---------------------------------------------------------------------------*/
 615 static void F_07G(call_desc_t *cd)
 616 {
 617         NDBGL3(L3_F_MSG, "FSM function F_07G executing");
 618         freecd_by_cd(cd);
 619 }
 620
 621 /*---------------------------------------------------------------------------*
 622  *      L3 FSM state U8 event CONNECT ACK from L2
 623  *---------------------------------------------------------------------------*/
 624 static void F_08R(call_desc_t *cd)
 625 {
 626         NDBGL3(L3_F_MSG, "FSM function F_08R executing");
 627         T313_stop(cd);
 628         i4b_l4_connect_active_ind(cd);
 629 }
 630
 631 /*---------------------------------------------------------------------------*
 632  *      L3 FSM state U8 event T313 timeout
 633  *---------------------------------------------------------------------------*/
 634 static void F_08Z(call_desc_t *cd)
 635 {
 636         NDBGL3(L3_F_MSG, "FSM function F_08Z executing");
 637         cd->cause_out = 102;    /* recovery on timer expiry */
 638         i4b_l3_tx_disconnect(cd);
 639         T305_start(cd);
 640         i4b_l4_disconnect_ind(cd);
 641 }
 642
 643 /*---------------------------------------------------------------------------*
 644  *      L3 FSM state U9 event alert req from L4
 645  *---------------------------------------------------------------------------*/
 646 static void F_09D(call_desc_t *cd)
 647 {
 648         NDBGL3(L3_F_MSG, "FSM function F_09D executing");
 649         i4b_l3_tx_alert(cd);
 650 }
 651
 652 /*---------------------------------------------------------------------------*
 653  *      L3 FSM state U9 event setup response accept from L4
 654  *---------------------------------------------------------------------------*/
 655 static void F_09E(call_desc_t *cd)
 656 {
 657         NDBGL3(L3_F_MSG, "FSM function F_09E executing");
 658         i4b_l3_tx_connect(cd);
 659         T313_start(cd);
 660 }
 661
 662 /*---------------------------------------------------------------------------*
 663  *      L3 FSM state U9 event setup response reject from L4
 664  *---------------------------------------------------------------------------*/
 665 static void F_09F(call_desc_t *cd)
 666 {
 667         NDBGL3(L3_F_MSG, "FSM function F_09F executing");
 668         i4b_l3_tx_release_complete(cd, 1);
 669         freecd_by_cd(cd);
 670 }
 671 /*---------------------------------------------------------------------------*
 672  *      L3 FSM state U9 event setup response ignore from L4
 673  *---------------------------------------------------------------------------*/
 674 static void F_09G(call_desc_t *cd)
 675 {
 676         NDBGL3(L3_F_MSG, "FSM function F_09G executing");
 677         freecd_by_cd(cd);
 678 }
 679
 680 /*---------------------------------------------------------------------------*
 681  *      L3 FSM state U11 event RELEASE from L2
 682  *---------------------------------------------------------------------------*/
 683 static void F_11J(call_desc_t *cd)
 684 {
 685         NDBGL3(L3_F_MSG, "FSM function F_11J executing");
 686         T305_stop(cd);
 687         i4b_l3_tx_release_complete(cd, 0);
 688         i4b_l4_disconnect_ind(cd);
 689         freecd_by_cd(cd);
 690 }
 691
 692 /*---------------------------------------------------------------------------*
 693  *      L3 FSM state U11 event DISCONNECT from L2
 694  *---------------------------------------------------------------------------*/
 695 static void F_11Q(call_desc_t *cd)
 696 {
 697         NDBGL3(L3_F_MSG, "FSM function F_11Q executing");
 698         T305_stop(cd);
 699         i4b_l3_tx_release(cd, 0);
 700         cd->T308_first_to = 1;
 701         T308_start(cd);
 702 }
 703
 704 /*---------------------------------------------------------------------------*
 705  *      L3 FSM state U11 event T305 timeout
 706  *---------------------------------------------------------------------------*/
 707 static void F_11V(call_desc_t *cd)
 708 {
 709         NDBGL3(L3_F_MSG, "FSM function F_11V executing");
 710         cd->cause_out = 102;
 711         i4b_l3_tx_release(cd, 1);
 712         cd->T308_first_to = 1;
 713         T308_start(cd);
 714 }
 715
 716 /*---------------------------------------------------------------------------*
 717  *      L3 FSM state U12 event release req from L4
 718  *---------------------------------------------------------------------------*/
 719 static void F_12C(call_desc_t *cd)
 720 {
 721         NDBGL3(L3_F_MSG, "FSM function F_12C executing");
 722         i4b_l3_tx_release(cd, 1);
 723         cd->T308_first_to = 1;
 724         T308_start(cd);
 725 }
 726
 727 /*---------------------------------------------------------------------------*
 728  *      L3 FSM state U12 event RELEASE from L2
 729  *---------------------------------------------------------------------------*/
 730 static void F_12J(call_desc_t *cd)
 731 {
 732         NDBGL3(L3_F_MSG, "FSM function F_12J executing");
 733         i4b_l3_tx_release_complete(cd, 0);
 734         i4b_l4_disconnect_ind(cd);
 735         freecd_by_cd(cd);
 736 }
 737
 738 /*---------------------------------------------------------------------------*
 739  *      L3 FSM state U19 event STATUS from L2
 740  *---------------------------------------------------------------------------*/
 741 static void F_19I(call_desc_t *cd)
 742 {
 743         NDBGL3(L3_F_MSG, "FSM function F_19I executing");
 744
 745         if(cd->call_state == 0)
 746         {
 747                 i4b_l4_status_ind(cd);
 748                 freecd_by_cd(cd);
 749                 cd->Q931state = ST_U0;
 750         }
 751         else
 752         {
 753                 cd->Q931state = ST_U19;
 754         }
 755 }
 756
 757 /*---------------------------------------------------------------------------*
 758  *      L3 FSM state U19 event RELEASE from L2
 759  *---------------------------------------------------------------------------*/
 760 static void F_19J(call_desc_t *cd)
 761 {
 762         NDBGL3(L3_F_MSG, "FSM function F_19J executing");
 763         T308_stop(cd);
 764         i4b_l4_disconnect_ind(cd);
 765         freecd_by_cd(cd);
 766 }
 767
 768 /*---------------------------------------------------------------------------*
 769  *      L3 FSM state U19 event RELEASE COMPLETE from L2
 770  *---------------------------------------------------------------------------*/
 771 static void F_19K(call_desc_t *cd)
 772 {
 773         NDBGL3(L3_F_MSG, "FSM function F_19K executing");
 774         T308_stop(cd);
 775         i4b_l4_disconnect_ind(cd);
 776         freecd_by_cd(cd);
 777 }
 778
 779 /*---------------------------------------------------------------------------*
 780  *      L3 FSM state U19 event T308 timeout
 781  *---------------------------------------------------------------------------*/
 782 static void F_19W(call_desc_t *cd)
 783 {
 784         NDBGL3(L3_F_MSG, "FSM function F_19W executing");
 785         if(cd->T308_first_to == 0)
 786         {
 787                 cd->T308_first_to = 1;
 788                 i4b_l3_tx_release(cd, 0);
 789                 T308_start(cd);
 790                 cd->Q931state = ST_U19;
 791         }
 792         else
 793         {
 794                 cd->T308_first_to = 0;
 795                 i4b_l4_disconnect_ind(cd);
 796                 freecd_by_cd(cd);
 797                 cd->Q931state = ST_U0;
 798         }
 799 }
 800
 801 /*---------------------------------------------------------------------------*
 802  *      L3 FSM routine no change no action
 803  *---------------------------------------------------------------------------*/
 804 static void F_NCNA(call_desc_t *cd)
 805 {
 806 }
 807
 808 /*---------------------------------------------------------------------------*
 809  *      L3 FSM any state event STATUS ENQ from L2
 810  *---------------------------------------------------------------------------*/
 811 static void F_STENQ(call_desc_t *cd)
 812 {
 813         NDBGL3(L3_F_MSG, "FSM function F_STENQ executing");
 814         i4b_l3_tx_status(cd, CAUSE_Q850_STENQRSP); /* 30, resonse to stat enq */
 815 }
 816
 817 /*---------------------------------------------------------------------------*
 818  *      L3 FSM any state except 0 & 19 event STATUS from L2
 819  *---------------------------------------------------------------------------*/
 820 static void F_STAT(call_desc_t *cd)
 821 {
 822         NDBGL3(L3_F_MSG, "FSM function F_STAT executing");
 823         if(cd->call_state == 0)
 824         {
 825                 i4b_l4_status_ind(cd);
 826                 cd->Q931state = ST_U0;
 827                 freecd_by_cd(cd);
 828         }
 829         else
 830         {
 831                 /* XXX !!!!!!!!!!!!!!!!!! */
 832
 833                 i4b_l4_status_ind(cd);
 834                 cd->cause_out = 101;    /* message not compatible with call state */
 835                 i4b_l3_tx_disconnect(cd);
 836                 T305_start(cd);
 837                 cd->Q931state = ST_U11;
 838         }
 839 }
 840
 841 /*---------------------------------------------------------------------------*
 842  *      L3 FSM some states event INFORMATION from L2
 843  *---------------------------------------------------------------------------*/
 844 static void F_INFO(call_desc_t *cd)
 845 {
 846         NDBGL3(L3_F_MSG, "FSM function F_INFO executing");
 847         i4b_l4_info_ind(cd);
 848         /* remain in current state */
 849 }
 850
 851 /*---------------------------------------------------------------------------*
 852  *      L3 FSM T308 timeout while expecting RELEASE COMPLETE
 853  *---------------------------------------------------------------------------*/
 854 static void F_308TO(call_desc_t *cd)
 855 {
 856         NDBGL3(L3_F_MSG, "FSM function F_308TO executing");
 857         i4b_l3_stop_all_timers(cd);
 858         i4b_l4_disconnect_ind(cd);
 859         freecd_by_cd(cd);
 860 }
 861
 862 /*---------------------------------------------------------------------------*
 863  *      L3 FSM some states event RELEASE COMPLETE from L2
 864  *---------------------------------------------------------------------------*/
 865 static void F_RELCP(call_desc_t *cd)
 866 {
 867         NDBGL3(L3_F_MSG, "FSM function F_RELCP executing");
 868         i4b_l3_stop_all_timers(cd);
 869         i4b_l4_disconnect_ind(cd);
 870         freecd_by_cd(cd);
 871 }
 872
 873 /*---------------------------------------------------------------------------*
 874  *      L3 FSM some states event RELEASE from L2
 875  *---------------------------------------------------------------------------*/
 876 static void F_REL(call_desc_t *cd)
 877 {
 878         NDBGL3(L3_F_MSG, "FSM function F_REL executing");
 879         i4b_l3_stop_all_timers(cd);
 880         i4b_l3_tx_release_complete(cd, 0);
 881         i4b_l4_disconnect_ind(cd);
 882         freecd_by_cd(cd);
 883 }
 884
 885 /*---------------------------------------------------------------------------*
 886  *      L3 FSM some states event DISCONNECT from L2
 887  *---------------------------------------------------------------------------*/
 888 static void F_DISC(call_desc_t *cd)
 889 {
 890         NDBGL3(L3_F_MSG, "FSM function F_DISC executing");
 891         i4b_l3_stop_all_timers(cd);
 892
 893         /*
 894          * no disconnect ind to L4, no jump to state U12
 895          * instead we issue a RELEASE and jump to U19
 896          */
 897
 898         i4b_l3_tx_release(cd, 0);
 899         cd->T308_first_to = 1;
 900         T308_start(cd);
 901         cd->Q931state = ST_U19;
 902 }
 903
 904 /*---------------------------------------------------------------------------*
 905  *      L3 FSM some states event disconnect request from L4
 906  *---------------------------------------------------------------------------*/
 907 static void F_DCRQ(call_desc_t *cd)
 908 {
 909         NDBGL3(L3_F_MSG, "FSM function F_DCRQ executing");
 910
 911         /* stop T310 in case this is the result of an incoming call for a */
 912         /* calledback connection */
 913
 914         if(cd->T310 == TIMER_ACTIVE)
 915                 T310_stop(cd);
 916
 917         /* cause from L4 */
 918         i4b_l3_tx_disconnect(cd);
 919         T305_start(cd);
 920         cd->Q931state = ST_U11;
 921 }
 922
 923 /*---------------------------------------------------------------------------*
 924  *      L3 FSM any state except 0 event unexpected message from L2
 925  *---------------------------------------------------------------------------*/
 926 static void F_UEM(call_desc_t *cd)
 927 {
 928         NDBGL3(L3_F_ERR, "FSM function F_UEM executing, state = %s", print_l3state(cd));
 929         i4b_l3_tx_status(cd, CAUSE_Q850_MSGNCWCS); /* 101, message not compatible with call state */
 930 }
 931
 932 /*---------------------------------------------------------------------------*
 933  *      L3 FSM any state except 0 event SETUP from L2
 934  *---------------------------------------------------------------------------*/
 935 static void F_SIGN(call_desc_t *cd)
 936 {
 937         NDBGL3(L3_F_ERR, "FSM function F_SIGN executing");
 938
 939 /* XXX */ /* freecd_by_cd(cd); ?????????? XXX */
 940 }
 941
 942 /*---------------------------------------------------------------------------*
 943  *      L3 FSM relevant states event DL ESTABLISH IND from L2
 944  *---------------------------------------------------------------------------*/
 945 static void F_DLEI(call_desc_t *cd)
 946 {
 947         NDBGL3(L3_F_MSG, "FSM function F_DLEI executing");
 948
 949 /* XXX */
 950
 951         /* remain in current state */
 952 }
 953
 954 /*---------------------------------------------------------------------------*
 955  *      L3 FSM any state event illegal event occured
 956  *---------------------------------------------------------------------------*/
 957 static void F_ILL(call_desc_t *cd)
 958 {
 959         NDBGL3(L3_F_MSG, "FSM function F_ILL executing");
 960 }
 961
 962 /*---------------------------------------------------------------------------*
 963  *      L3 FSM any state event T309 timeout
 964  *---------------------------------------------------------------------------*/
 965 static void F_309TO(call_desc_t *cd)
 966 {
 967         NDBGL3(L3_F_ERR, "FSM function F_309TO executing");
 968
 969 /* XXX */
 970
 971 #ifdef NOTDEF
 972         i4b_l4_dl_fail_ind(cd);
 973 #endif
 974
 975         freecd_by_cd(cd);
 976 }
 977
 978 /*---------------------------------------------------------------------------*
 979  *      L3 FSM any state event FACILITY message received
 980  *---------------------------------------------------------------------------*/
 981 static void F_FCTY(call_desc_t *cd)
 982 {
 983         NDBGL3(L3_F_MSG, "FSM function F_FCTY executing");
 984         /* ST_SUSE, no change in state ! */
 985 }
 986
 987 /*---------------------------------------------------------------------------*
 988  *      L3 FSM state ST_OW event DL ESTABLISH CONF from L2
 989  *---------------------------------------------------------------------------*/
 990 static void F_DECF1(call_desc_t *cd)
 991 {
 992         NDBGL3(L3_F_MSG, "FSM function F_DECF1 executing");
 993         i4b_l3_tx_setup(cd);
 994 }
 995
 996 /*---------------------------------------------------------------------------*
 997  *      L3 FSM state ST_IWA event DL ESTABLISH CONF from L2
 998  *---------------------------------------------------------------------------*/
 999 static void F_DECF2(call_desc_t *cd)
1000 {
1001         NDBGL3(L3_F_MSG, "FSM function F_DECF2 executing");
1002         i4b_l3_tx_connect(cd);
1003 }
1004
1005 /*---------------------------------------------------------------------------*
1006  *      L3 FSM state ST_IWR event DL ESTABLISH CONF from L2
1007  *---------------------------------------------------------------------------*/
1008 static void F_DECF3(call_desc_t *cd)
1009 {
1010         NDBGL3(L3_F_MSG, "FSM function F_DECF3 executing");
1011         i4b_l3_tx_release_complete(cd, 1);
1012         freecd_by_cd(cd);
1013 }
1014
1015 /*---------------------------------------------------------------------------*
1016  *      L3 FSM state ST_IWL event DL ESTABLISH CONF from L2
1017  *---------------------------------------------------------------------------*/
1018 static void F_DECF4(call_desc_t *cd)
1019 {
1020         NDBGL3(L3_F_MSG, "FSM function F_DECF4 executing");
1021         i4b_l3_tx_alert(cd);
1022 }
1023
1024
1025 /*---------------------------------------------------------------------------*
1026  *      L3 FSM any state event DL ESTABLISH CONF from L2
1027  *---------------------------------------------------------------------------*/
1028 static void F_DECF(call_desc_t *cd)
1029 {
1030         NDBGL3(L3_F_MSG, "FSM function F_DECF executing");
1031         T309_stop(cd);
1032         i4b_l3_tx_status(cd, CAUSE_Q850_NORMUNSP); /* 31, normal unspecified */
1033 }
1034
1035 /*---------------------------------------------------------------------------*
1036  *      L3 FSM any state except U10 event DL RELEASE IND from L2
1037  *---------------------------------------------------------------------------*/
1038 static void F_DLRI(call_desc_t *cd)
1039 {
1040         NDBGL3(L3_F_MSG, "FSM function F_DLRI executing");
1041         i4b_l3_stop_all_timers(cd);
1042         i4b_l4_disconnect_ind(cd);
1043         freecd_by_cd(cd);
1044 }
1045
1046 /*---------------------------------------------------------------------------*
1047  *      L3 FSM state U10 event DL RELEASE IND from L2
1048  *---------------------------------------------------------------------------*/
1049 static void F_DLRIA(call_desc_t *cd)
1050 {
1051         NDBGL3(L3_F_MSG, "FSM function F_DLRIA executing");
1052
1053         if(cd->T309 == TIMER_IDLE)
1054                 T309_start(cd);
1055
1056         DL_Est_Req(ctrl_desc[cd->controller].unit);
1057 }
1058
1059 #endif /* NI4BQ931 > 0 */