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/*-
* Copyright (c) 1997, 2002 Hellmuth Michaelis. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*---------------------------------------------------------------------------
*
* i4b_l3fsm.c - layer 3 FSM
* -------------------------
* last edit-date: [Sat Mar 9 19:34:39 2002]
*
*---------------------------------------------------------------------------*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <i4b/include/i4b_debug.h>
#include <i4b/include/i4b_ioctl.h>
#include <i4b/include/i4b_cause.h>
#include <i4b/include/i4b_l2l3.h>
#include <i4b/include/i4b_l3l4.h>
#include <i4b/include/i4b_global.h>
#include <i4b/layer3/i4b_l3.h>
#include <i4b/layer3/i4b_l3fsm.h>
#include <i4b/layer4/i4b_l4.h>
static void F_00A(call_desc_t *cd), F_00H(call_desc_t *cd), F_00I(call_desc_t *cd);
static void F_00J(call_desc_t *cd);
static void F_01B(call_desc_t *cd), F_01K(call_desc_t *cd), F_01L(call_desc_t *cd);
static void F_01M(call_desc_t *cd), F_01N(call_desc_t *cd), F_01U(call_desc_t *cd);
static void F_01O(call_desc_t *cd);
static void F_03C(call_desc_t *cd), F_03N(call_desc_t *cd), F_03O(call_desc_t *cd);
static void F_03P(call_desc_t *cd), F_03Y(call_desc_t *cd);
static void F_04O(call_desc_t *cd);
static void F_06D(call_desc_t *cd), F_06E(call_desc_t *cd), F_06F(call_desc_t *cd);
static void F_06G(call_desc_t *cd), F_06J(call_desc_t *cd), F_06Q(call_desc_t *cd);
static void F_07E(call_desc_t *cd), F_07F(call_desc_t *cd), F_07G(call_desc_t *cd);
static void F_08R(call_desc_t *cd), F_08Z(call_desc_t *cd);
static void F_09D(call_desc_t *cd), F_09E(call_desc_t *cd), F_09F(call_desc_t *cd);
static void F_09G(call_desc_t *cd);
static void F_11J(call_desc_t *cd), F_11Q(call_desc_t *cd), F_11V(call_desc_t *cd);
static void F_12C(call_desc_t *cd), F_12J(call_desc_t *cd);
static void F_19I(call_desc_t *cd), F_19J(call_desc_t *cd), F_19K(call_desc_t *cd);
static void F_19W(call_desc_t *cd);
static void F_NCNA(call_desc_t *cd), F_STENQ(call_desc_t *cd), F_STAT(call_desc_t *cd);
static void F_INFO(call_desc_t *cd), F_RELCP(call_desc_t *cd), F_REL(call_desc_t *cd);
static void F_DISC(call_desc_t *cd), F_DCRQ(call_desc_t *cd), F_UEM(call_desc_t *cd);
static void F_SIGN(call_desc_t *cd), F_DLEI(call_desc_t *cd), F_ILL(call_desc_t *cd);
static void F_309TO(call_desc_t *cd), F_DECF(call_desc_t *cd), F_FCTY(call_desc_t *cd);
static void F_DECF1(call_desc_t *cd), F_DECF2(call_desc_t *cd), F_DECF3(call_desc_t *cd);
static void F_DLRI(call_desc_t *cd), F_DLRIA(call_desc_t *cd), F_DECF4(call_desc_t *cd);
static void F_308TO(call_desc_t *cd);
#if DO_I4B_DEBUG
static char *l3state_text[N_STATES] = {
"ST_U0 - Null",
"ST_U1 - Out Init",
"ST_U3 - Out Proc",
"ST_U4 - Out Delv",
"ST_U6 - In Pres",
"ST_U7 - In Rxd",
"ST_U8 - In ConReq",
"ST_U9 - In Proc",
"ST_U10 - Active",
"ST_U11 - Disc Req",
"ST_U12 - Disc Ind",
"ST_U19 - Rel Req",
"ST_IWA - In Wait EST-Accept",
"ST_IWR - In Wait EST-Reject",
"ST_OW - Out Wait EST",
"ST_IWL - In Wait EST-Alert",
"ST_SUSE - Subroutine sets state",
"Illegal State"
};
static char *l3event_text[N_EVENTS] = {
"EV_SETUPRQ - L4 SETUP REQ", /* setup request from L4 */
"EV_DISCRQ - L4 DISC REQ", /* disconnect request from L4 */
"EV_RELRQ - L4 REL REQ", /* release request from L4 */
"EV_ALERTRQ - L4 ALERT REQ", /* alerting request from L4 */
"EV_SETACRS - L4 accept RSP", /* setup response accept from l4 */
"EV_SETRJRS - L4 reject RSP", /* setup response reject from l4 */
"EV_SETDCRS - L4 ignore RSP", /* setup response dontcare from l4 */
"EV_SETUP - rxd SETUP", /* incoming SETUP message from L2 */
"EV_STATUS - rxd STATUS", /* incoming STATUS message from L2 */
"EV_RELEASE - rxd REL", /* incoming RELEASE message from L2 */
"EV_RELCOMP - rxd REL COMPL", /* incoming RELEASE COMPLETE from L2 */
"EV_SETUPAK - rxd SETUP ACK", /* incoming SETUP ACK message from L2 */
"EV_CALLPRC - rxd CALL PROC", /* incoming CALL PROCEEDING from L2 */
"EV_ALERT - rxd ALERT", /* incoming ALERT message from L2 */
"EV_CONNECT - rxd CONNECT", /* incoming CONNECT message from L2 */
"EV_PROGIND - rxd PROG IND", /* incoming Progress IND from L2 */
"EV_DISCONN - rxd DISC", /* incoming DISCONNECT message from L2 */
"EV_CONACK - rxd CONN ACK", /* incoming CONNECT ACK message from L2 */
"EV_STATENQ - rxd STAT ENQ", /* incoming STATUS ENQ message from L2 */
"EV_INFO - rxd INFO", /* incoming INFO message from L2 */
"EV_FACILITY - rxd FACILITY", /* incoming FACILITY message */
"EV_T303EXP - T303 timeout", /* Timer T303 expired */
"EV_T305EXP - T305 timeout", /* Timer T305 expired */
"EV_T308EXP - T308 timeout", /* Timer T308 expired */
"EV_T309EXP - T309 timeout", /* Timer T309 expired */
"EV_T310EXP - T310 timeout", /* Timer T310 expired */
"EV_T313EXP - T313 timeout", /* Timer T313 expired */
"EV_DLESTIN - L2 DL_Est_Ind", /* dl establish indication from l2 */
"EV_DLRELIN - L2 DL_Rel_Ind", /* dl release indication from l2 */
"EV_DLESTCF - L2 DL_Est_Cnf", /* dl establish confirm from l2 */
"EV_DLRELCF - L2 DL_Rel_Cnf", /* dl release confirm from l2 */
"EV_ILL - Illegal event!!" /* Illegal */
};
#endif
/*---------------------------------------------------------------------------*
* layer 3 state transition table
*---------------------------------------------------------------------------*/
struct l3state_tab {
void (*func) (call_desc_t *); /* function to execute */
int newstate; /* next state */
} l3state_tab[N_EVENTS][N_STATES] = {
/* 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 */
/* ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------*/
/*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}},
/*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}},
/*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}},
/*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}},
/*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}},
/*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}},
/*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}},
/* 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 */
/* ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------*/
/*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}},
/*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}},
/*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}},
/*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}},
/*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}},
/*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}},
/*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}},
/*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}},
/*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}},
/*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}},
/*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}},
/*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}},
/*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}},
/*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}},
/* 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 */
/* ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------*/
/*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}},
/*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}},
/*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}},
/*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}},
/*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}},
/*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}},
/* 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 */
/* ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------*/
/*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}},
/*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}},
/*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}},
/*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}},
/*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}}
};
/*---------------------------------------------------------------------------*
* event handler
*---------------------------------------------------------------------------*/
void next_l3state(call_desc_t *cd, int event)
{
int currstate, newstate;
if(event >= N_EVENTS)
panic("i4b_l3fsm.c: event >= N_EVENTS\n");
currstate = cd->Q931state;
if(currstate >= N_STATES)
panic("i4b_l3fsm.c: currstate >= N_STATES\n");
newstate = l3state_tab[event][currstate].newstate;
if(newstate > N_STATES)
panic("i4b_l3fsm.c: newstate > N_STATES\n");
NDBGL3(L3_F_MSG, "L3 FSM event [%s]: [%s => %s]",
l3event_text[event],
l3state_text[currstate],
l3state_text[newstate]);
/* execute function */
(*l3state_tab[event][currstate].func)(cd);
if(newstate == ST_ILL)
{
newstate = currstate;
NDBGL3(L3_F_ERR, "FSM illegal state, state = %s, event = %s!",
l3state_text[newstate],
l3event_text[event]);
}
if(newstate != ST_SUSE)
cd->Q931state = newstate;
}
#if DO_I4B_DEBUG
/*---------------------------------------------------------------------------*
* return pointer to current state description
*---------------------------------------------------------------------------*/
char *print_l3state(call_desc_t *cd)
{
return((char *) l3state_text[cd->Q931state]);
}
#endif
/*---------------------------------------------------------------------------*
* L3 FSM state U0 event L4 setup req
*---------------------------------------------------------------------------*/
static void F_00A(call_desc_t *cd)
{
int s;
NDBGL3(L3_F_MSG, "FSM function F_00A executing");
cd->T303_first_to = 1;
T303_start(cd);
s = SPLI4B();
if(i4b_get_dl_stat(cd) == DL_DOWN)
{
splx(s);
DL_Est_Req(ctrl_desc[cd->controller].unit);
cd->Q931state = ST_OW;
}
else
{
cd->Q931state = ST_U1;
splx(s);
i4b_l3_tx_setup(cd);
}
}
/*---------------------------------------------------------------------------*
* L3 FSM state U0 event SETUP from L2
*---------------------------------------------------------------------------*/
static void F_00H(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_00H executing");
i4b_l4_connect_ind(cd); /* tell l4 we have an incoming setup */
}
/*---------------------------------------------------------------------------*
* L3 FSM state U0 event STATUS from L2
*---------------------------------------------------------------------------*/
static void F_00I(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_00I executing");
if(cd->call_state != 0)
{
cd->cause_out = 101;
i4b_l3_tx_release_complete(cd, 1); /* 1 = send cause */
}
cd->Q931state = ST_U0;
}
/*---------------------------------------------------------------------------*
* L3 FSM state U0 event RELEASE from L2
*---------------------------------------------------------------------------*/
static void F_00J(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_00J executing");
i4b_l3_tx_release_complete(cd, 0); /* 0 = don't send cause */
}
/*---------------------------------------------------------------------------*
* L3 FSM state U1 event disconnect req from L4
*---------------------------------------------------------------------------*/
static void F_01B(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_01B executing");
/* cause from L4 */
i4b_l3_tx_disconnect(cd);
T303_stop(cd);
T305_start(cd);
}
/*---------------------------------------------------------------------------*
* L3 FSM state U1 event RELEASE COMPLETE from L2
*---------------------------------------------------------------------------*/
static void F_01K(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_01K executing");
T303_stop(cd);
i4b_l4_disconnect_ind(cd); /* tell l4 we were rejected */
freecd_by_cd(cd);
}
/*---------------------------------------------------------------------------*
* L3 FSM state U1 event SETUP ACK from L2
*---------------------------------------------------------------------------*/
static void F_01L(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_01L executing");
T303_stop(cd);
/*
* since this implementation does NOT support overlap sending,
* we react here as if we received a CALL PROCEEDING because
* several PBX's react with a SETUP ACK even if the called
* number is complete AND we sent a SENDING COMPLETE in the
* preceding SETUP message. (-hm)
*/
T310_start(cd);
i4b_l4_proceeding_ind(cd);
}
/*---------------------------------------------------------------------------*
* L3 FSM state U1 event CALL PROCEEDING from L2
*---------------------------------------------------------------------------*/
static void F_01M(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_01M executing");
T303_stop(cd);
T310_start(cd);
i4b_l4_proceeding_ind(cd);
}
/*---------------------------------------------------------------------------*
* L3 FSM state U1 event ALERT from L2 (XXX !)
*---------------------------------------------------------------------------*/
static void F_01N(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_01N executing");
T303_stop(cd);
i4b_l4_alert_ind(cd);
}
/*---------------------------------------------------------------------------*
* L3 FSM state U1 event CONNECT from L2 (XXX !)
*---------------------------------------------------------------------------*/
static void F_01O(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_01O executing");
T303_stop(cd);
i4b_l3_tx_connect_ack(cd);
i4b_l4_connect_active_ind(cd);
}
/*---------------------------------------------------------------------------*
* L3 FSM state U1 event T303 timeout
*---------------------------------------------------------------------------*/
static void F_01U(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_01U executing");
if(cd->T303_first_to == 1)
{
cd->T303_first_to = 0;
i4b_l3_tx_setup(cd);
T303_start(cd);
cd->Q931state = ST_U1;
}
else
{
i4b_l4_disconnect_ind(cd);
freecd_by_cd(cd);
cd->Q931state = ST_U0;
}
}
/*---------------------------------------------------------------------------*
* L3 FSM state U3 event release req from L4
*---------------------------------------------------------------------------*/
static void F_03C(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_03C executing");
T310_stop(cd);
cd->cause_out = 6;
i4b_l3_tx_release(cd, 1); /* 0 = don't send cause */
cd->T308_first_to = 1;
T308_start(cd);
}
/*---------------------------------------------------------------------------*
* L3 FSM state U3 event ALERT from L2
*---------------------------------------------------------------------------*/
static void F_03N(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_03N executing");
T310_stop(cd);
i4b_l4_alert_ind(cd);
}
/*---------------------------------------------------------------------------*
* L3 FSM state U3 event CONNECT from L2
*---------------------------------------------------------------------------*/
static void F_03O(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_03O executing");
T310_stop(cd);
i4b_l3_tx_connect_ack(cd); /* CONNECT ACK to network */
i4b_l4_connect_active_ind(cd);
}
/*---------------------------------------------------------------------------*
* L3 FSM state U3 event PROGESS IND from L2
*---------------------------------------------------------------------------*/
static void F_03P(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_03P executing");
T310_stop(cd);
#ifdef NOTDEF
i4b_l4_progress_ind(cd);
#endif
}
/*---------------------------------------------------------------------------*
* L3 FSM state U3 event T310 timeout
*---------------------------------------------------------------------------*/
static void F_03Y(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_03Y executing");
cd->cause_out = 102; /* recovery on timer expiry */
i4b_l3_tx_disconnect(cd);
T305_start(cd);
i4b_l4_disconnect_ind(cd);
}
/*---------------------------------------------------------------------------*
* L3 FSM state U4 event CONNECT from L2
*---------------------------------------------------------------------------*/
static void F_04O(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_04O executing");
i4b_l3_tx_connect_ack(cd); /* CONNECT ACK to network */
i4b_l4_connect_active_ind(cd);
}
/*---------------------------------------------------------------------------*
* L3 FSM state U6 event alert req from L4
*---------------------------------------------------------------------------*/
static void F_06D(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_06D executing");
if(i4b_get_dl_stat(cd) == DL_DOWN)
{
DL_Est_Req(ctrl_desc[cd->controller].unit);
cd->Q931state = ST_IWL;
}
else
{
i4b_l3_tx_alert(cd);
cd->Q931state = ST_U7;
}
}
/*---------------------------------------------------------------------------*
* L3 FSM state U6 event incoming setup accept from L4
*---------------------------------------------------------------------------*/
static void F_06E(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_06E executing");
if(i4b_get_dl_stat(cd) == DL_DOWN)
{
DL_Est_Req(ctrl_desc[cd->controller].unit);
cd->Q931state = ST_IWA;
}
else
{
i4b_l3_tx_connect(cd);
cd->Q931state = ST_U8;
}
T313_start(cd);
}
/*---------------------------------------------------------------------------*
* L3 FSM state U6 event incoming setup reject from L4
*---------------------------------------------------------------------------*/
static void F_06F(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_06F executing");
if(i4b_get_dl_stat(cd) == DL_DOWN)
{
DL_Est_Req(ctrl_desc[cd->controller].unit);
cd->Q931state = ST_IWR;
}
else
{
int s = SPLI4B();
i4b_l3_tx_release_complete(cd, 1);
cd->Q931state = ST_U0;
freecd_by_cd(cd);
splx(s);
}
}
/*---------------------------------------------------------------------------*
* L3 FSM state U6 event incoming setup ignore from L4
*---------------------------------------------------------------------------*/
static void F_06G(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_06G executing");
freecd_by_cd(cd);
}
/*---------------------------------------------------------------------------*
* L3 FSM state U6 event RELEASE from L2
*---------------------------------------------------------------------------*/
static void F_06J(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_06J executing");
i4b_l3_tx_release_complete(cd, 0);
i4b_l4_disconnect_ind(cd);
freecd_by_cd(cd);
}
/*---------------------------------------------------------------------------*
* L3 FSM state U6 event DISCONNECT from L2
*---------------------------------------------------------------------------*/
static void F_06Q(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_06Q executing");
i4b_l4_disconnect_ind(cd);
}
/*---------------------------------------------------------------------------*
* L3 FSM state U7 event setup response accept from L4
*---------------------------------------------------------------------------*/
static void F_07E(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_07E executing");
i4b_l3_tx_connect(cd);
T313_start(cd);
}
/*---------------------------------------------------------------------------*
* L3 FSM state U7 event setup response reject from L4
*---------------------------------------------------------------------------*/
static void F_07F(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_07F executing");
i4b_l3_tx_release_complete(cd, 1);
freecd_by_cd(cd);
}
/*---------------------------------------------------------------------------*
* L3 FSM state U7 event setup response ignore from L4
*---------------------------------------------------------------------------*/
static void F_07G(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_07G executing");
freecd_by_cd(cd);
}
/*---------------------------------------------------------------------------*
* L3 FSM state U8 event CONNECT ACK from L2
*---------------------------------------------------------------------------*/
static void F_08R(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_08R executing");
T313_stop(cd);
i4b_l4_connect_active_ind(cd);
}
/*---------------------------------------------------------------------------*
* L3 FSM state U8 event T313 timeout
*---------------------------------------------------------------------------*/
static void F_08Z(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_08Z executing");
cd->cause_out = 102; /* recovery on timer expiry */
i4b_l3_tx_disconnect(cd);
T305_start(cd);
i4b_l4_disconnect_ind(cd);
}
/*---------------------------------------------------------------------------*
* L3 FSM state U9 event alert req from L4
*---------------------------------------------------------------------------*/
static void F_09D(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_09D executing");
i4b_l3_tx_alert(cd);
}
/*---------------------------------------------------------------------------*
* L3 FSM state U9 event setup response accept from L4
*---------------------------------------------------------------------------*/
static void F_09E(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_09E executing");
i4b_l3_tx_connect(cd);
T313_start(cd);
}
/*---------------------------------------------------------------------------*
* L3 FSM state U9 event setup response reject from L4
*---------------------------------------------------------------------------*/
static void F_09F(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_09F executing");
i4b_l3_tx_release_complete(cd, 1);
freecd_by_cd(cd);
}
/*---------------------------------------------------------------------------*
* L3 FSM state U9 event setup response ignore from L4
*---------------------------------------------------------------------------*/
static void F_09G(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_09G executing");
freecd_by_cd(cd);
}
/*---------------------------------------------------------------------------*
* L3 FSM state U11 event RELEASE from L2
*---------------------------------------------------------------------------*/
static void F_11J(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_11J executing");
T305_stop(cd);
i4b_l3_tx_release_complete(cd, 0);
i4b_l4_disconnect_ind(cd);
freecd_by_cd(cd);
}
/*---------------------------------------------------------------------------*
* L3 FSM state U11 event DISCONNECT from L2
*---------------------------------------------------------------------------*/
static void F_11Q(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_11Q executing");
T305_stop(cd);
i4b_l3_tx_release(cd, 0);
cd->T308_first_to = 1;
T308_start(cd);
}
/*---------------------------------------------------------------------------*
* L3 FSM state U11 event T305 timeout
*---------------------------------------------------------------------------*/
static void F_11V(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_11V executing");
cd->cause_out = 102;
i4b_l3_tx_release(cd, 1);
cd->T308_first_to = 1;
T308_start(cd);
}
/*---------------------------------------------------------------------------*
* L3 FSM state U12 event release req from L4
*---------------------------------------------------------------------------*/
static void F_12C(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_12C executing");
i4b_l3_tx_release(cd, 1);
cd->T308_first_to = 1;
T308_start(cd);
}
/*---------------------------------------------------------------------------*
* L3 FSM state U12 event RELEASE from L2
*---------------------------------------------------------------------------*/
static void F_12J(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_12J executing");
i4b_l3_tx_release_complete(cd, 0);
i4b_l4_disconnect_ind(cd);
freecd_by_cd(cd);
}
/*---------------------------------------------------------------------------*
* L3 FSM state U19 event STATUS from L2
*---------------------------------------------------------------------------*/
static void F_19I(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_19I executing");
if(cd->call_state == 0)
{
i4b_l4_status_ind(cd);
freecd_by_cd(cd);
cd->Q931state = ST_U0;
}
else
{
cd->Q931state = ST_U19;
}
}
/*---------------------------------------------------------------------------*
* L3 FSM state U19 event RELEASE from L2
*---------------------------------------------------------------------------*/
static void F_19J(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_19J executing");
T308_stop(cd);
i4b_l4_disconnect_ind(cd);
freecd_by_cd(cd);
}
/*---------------------------------------------------------------------------*
* L3 FSM state U19 event RELEASE COMPLETE from L2
*---------------------------------------------------------------------------*/
static void F_19K(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_19K executing");
T308_stop(cd);
i4b_l4_disconnect_ind(cd);
freecd_by_cd(cd);
}
/*---------------------------------------------------------------------------*
* L3 FSM state U19 event T308 timeout
*---------------------------------------------------------------------------*/
static void F_19W(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_19W executing");
if(cd->T308_first_to == 0)
{
cd->T308_first_to = 1;
i4b_l3_tx_release(cd, 0);
T308_start(cd);
cd->Q931state = ST_U19;
}
else
{
cd->T308_first_to = 0;
i4b_l4_disconnect_ind(cd);
freecd_by_cd(cd);
cd->Q931state = ST_U0;
}
}
/*---------------------------------------------------------------------------*
* L3 FSM routine no change no action
*---------------------------------------------------------------------------*/
static void F_NCNA(call_desc_t *cd)
{
}
/*---------------------------------------------------------------------------*
* L3 FSM any state event STATUS ENQ from L2
*---------------------------------------------------------------------------*/
static void F_STENQ(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_STENQ executing");
i4b_l3_tx_status(cd, CAUSE_Q850_STENQRSP); /* 30, resonse to stat enq */
}
/*---------------------------------------------------------------------------*
* L3 FSM any state except 0 & 19 event STATUS from L2
*---------------------------------------------------------------------------*/
static void F_STAT(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_STAT executing");
if(cd->call_state == 0)
{
i4b_l4_status_ind(cd);
cd->Q931state = ST_U0;
freecd_by_cd(cd);
}
else
{
/* XXX !!!!!!!!!!!!!!!!!! */
i4b_l4_status_ind(cd);
cd->cause_out = 101; /* message not compatible with call state */
i4b_l3_tx_disconnect(cd);
T305_start(cd);
cd->Q931state = ST_U11;
}
}
/*---------------------------------------------------------------------------*
* L3 FSM some states event INFORMATION from L2
*---------------------------------------------------------------------------*/
static void F_INFO(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_INFO executing");
i4b_l4_info_ind(cd);
/* remain in current state */
}
/*---------------------------------------------------------------------------*
* L3 FSM T308 timeout while expecting RELEASE COMPLETE
*---------------------------------------------------------------------------*/
static void F_308TO(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_308TO executing");
i4b_l3_stop_all_timers(cd);
i4b_l4_disconnect_ind(cd);
freecd_by_cd(cd);
}
/*---------------------------------------------------------------------------*
* L3 FSM some states event RELEASE COMPLETE from L2
*---------------------------------------------------------------------------*/
static void F_RELCP(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_RELCP executing");
i4b_l3_stop_all_timers(cd);
i4b_l4_disconnect_ind(cd);
freecd_by_cd(cd);
}
/*---------------------------------------------------------------------------*
* L3 FSM some states event RELEASE from L2
*---------------------------------------------------------------------------*/
static void F_REL(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_REL executing");
i4b_l3_stop_all_timers(cd);
i4b_l3_tx_release_complete(cd, 0);
i4b_l4_disconnect_ind(cd);
freecd_by_cd(cd);
}
/*---------------------------------------------------------------------------*
* L3 FSM some states event DISCONNECT from L2
*---------------------------------------------------------------------------*/
static void F_DISC(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_DISC executing");
i4b_l3_stop_all_timers(cd);
/*
* no disconnect ind to L4, no jump to state U12
* instead we issue a RELEASE and jump to U19
*/
i4b_l3_tx_release(cd, 0);
cd->T308_first_to = 1;
T308_start(cd);
cd->Q931state = ST_U19;
}
/*---------------------------------------------------------------------------*
* L3 FSM some states event disconnect request from L4
*---------------------------------------------------------------------------*/
static void F_DCRQ(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_DCRQ executing");
/* stop T310 in case this is the result of an incoming call for a */
/* calledback connection */
if(cd->T310 == TIMER_ACTIVE)
T310_stop(cd);
/* cause from L4 */
i4b_l3_tx_disconnect(cd);
T305_start(cd);
cd->Q931state = ST_U11;
}
/*---------------------------------------------------------------------------*
* L3 FSM any state except 0 event unexpected message from L2
*---------------------------------------------------------------------------*/
static void F_UEM(call_desc_t *cd)
{
NDBGL3(L3_F_ERR, "FSM function F_UEM executing, state = %s", print_l3state(cd));
i4b_l3_tx_status(cd, CAUSE_Q850_MSGNCWCS); /* 101, message not compatible with call state */
}
/*---------------------------------------------------------------------------*
* L3 FSM any state except 0 event SETUP from L2
*---------------------------------------------------------------------------*/
static void F_SIGN(call_desc_t *cd)
{
NDBGL3(L3_F_ERR, "FSM function F_SIGN executing");
/* XXX */ /* freecd_by_cd(cd); ?????????? XXX */
}
/*---------------------------------------------------------------------------*
* L3 FSM relevant states event DL ESTABLISH IND from L2
*---------------------------------------------------------------------------*/
static void F_DLEI(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_DLEI executing");
/* XXX */
/* remain in current state */
}
/*---------------------------------------------------------------------------*
* L3 FSM any state event illegal event occured
*---------------------------------------------------------------------------*/
static void F_ILL(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_ILL executing");
}
/*---------------------------------------------------------------------------*
* L3 FSM any state event T309 timeout
*---------------------------------------------------------------------------*/
static void F_309TO(call_desc_t *cd)
{
NDBGL3(L3_F_ERR, "FSM function F_309TO executing");
/* XXX */
#ifdef NOTDEF
i4b_l4_dl_fail_ind(cd);
#endif
freecd_by_cd(cd);
}
/*---------------------------------------------------------------------------*
* L3 FSM any state event FACILITY message received
*---------------------------------------------------------------------------*/
static void F_FCTY(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_FCTY executing");
/* ST_SUSE, no change in state ! */
}
/*---------------------------------------------------------------------------*
* L3 FSM state ST_OW event DL ESTABLISH CONF from L2
*---------------------------------------------------------------------------*/
static void F_DECF1(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_DECF1 executing");
i4b_l3_tx_setup(cd);
}
/*---------------------------------------------------------------------------*
* L3 FSM state ST_IWA event DL ESTABLISH CONF from L2
*---------------------------------------------------------------------------*/
static void F_DECF2(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_DECF2 executing");
i4b_l3_tx_connect(cd);
}
/*---------------------------------------------------------------------------*
* L3 FSM state ST_IWR event DL ESTABLISH CONF from L2
*---------------------------------------------------------------------------*/
static void F_DECF3(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_DECF3 executing");
i4b_l3_tx_release_complete(cd, 1);
freecd_by_cd(cd);
}
/*---------------------------------------------------------------------------*
* L3 FSM state ST_IWL event DL ESTABLISH CONF from L2
*---------------------------------------------------------------------------*/
static void F_DECF4(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_DECF4 executing");
i4b_l3_tx_alert(cd);
}
/*---------------------------------------------------------------------------*
* L3 FSM any state event DL ESTABLISH CONF from L2
*---------------------------------------------------------------------------*/
static void F_DECF(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_DECF executing");
T309_stop(cd);
i4b_l3_tx_status(cd, CAUSE_Q850_NORMUNSP); /* 31, normal unspecified */
}
/*---------------------------------------------------------------------------*
* L3 FSM any state except U10 event DL RELEASE IND from L2
*---------------------------------------------------------------------------*/
static void F_DLRI(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_DLRI executing");
i4b_l3_stop_all_timers(cd);
i4b_l4_disconnect_ind(cd);
freecd_by_cd(cd);
}
/*---------------------------------------------------------------------------*
* L3 FSM state U10 event DL RELEASE IND from L2
*---------------------------------------------------------------------------*/
static void F_DLRIA(call_desc_t *cd)
{
NDBGL3(L3_F_MSG, "FSM function F_DLRIA executing");
if(cd->T309 == TIMER_IDLE)
T309_start(cd);
DL_Est_Req(ctrl_desc[cd->controller].unit);
}
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