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freebsd/sys/i4b/layer2/i4b_l2fsm.c
David E. O'Brien be07195a60 Use __FBSDID().
2003-06-11 00:01:05 +00:00

1578 lines
43 KiB
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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_l2fsm.c - layer 2 FSM
* -------------------------
* last edit-date: [Sat Mar 9 16:14:07 2002]
*
*---------------------------------------------------------------------------*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/socket.h>
#include <net/if.h>
#include <machine/i4b_debug.h>
#include <machine/i4b_ioctl.h>
#include <i4b/include/i4b_global.h>
#include <i4b/include/i4b_l2l3.h>
#include <i4b/include/i4b_mbuf.h>
#include <i4b/layer2/i4b_l2.h>
#include <i4b/layer2/i4b_l2fsm.h>
l2_softc_t l2_softc[MAXL1UNITS];
#if DO_I4B_DEBUG
static char *l2state_text[N_STATES] = {
"ST_TEI_UNAS",
"ST_ASG_AW_TEI",
"ST_EST_AW_TEI",
"ST_TEI_ASGD",
"ST_AW_EST",
"ST_AW_REL",
"ST_MULTIFR",
"ST_TIMREC",
"ST_SUBSET",
"Illegal State"
};
static char *l2event_text[N_EVENTS] = {
"EV_DLESTRQ",
"EV_DLUDTRQ",
"EV_MDASGRQ",
"EV_MDERRRS",
"EV_PSDEACT",
"EV_MDREMRQ",
"EV_RXSABME",
"EV_RXDISC",
"EV_RXUA",
"EV_RXDM",
"EV_T200EXP",
"EV_DLDATRQ",
"EV_DLRELRQ",
"EV_T203EXP",
"EV_OWNBUSY",
"EV_OWNRDY",
"EV_RXRR",
"EV_RXREJ",
"EV_RXRNR",
"EV_RXFRMR",
"Illegal Event"
};
#endif
static void F_TU01(l2_softc_t *);
static void F_TU03(l2_softc_t *);
static void F_TA03(l2_softc_t *);
static void F_TA04(l2_softc_t *);
static void F_TA05(l2_softc_t *);
static void F_TE03(l2_softc_t *);
static void F_TE04(l2_softc_t *);
static void F_TE05(l2_softc_t *);
static void F_T01(l2_softc_t *);
static void F_T05(l2_softc_t *);
static void F_T06(l2_softc_t *);
static void F_T07(l2_softc_t *);
static void F_T08(l2_softc_t *);
static void F_T09(l2_softc_t *);
static void F_T10(l2_softc_t *);
static void F_T13(l2_softc_t *);
static void F_AE01(l2_softc_t *);
static void F_AE05(l2_softc_t *);
static void F_AE06(l2_softc_t *);
static void F_AE07(l2_softc_t *);
static void F_AE08(l2_softc_t *);
static void F_AE09(l2_softc_t *);
static void F_AE10(l2_softc_t *);
static void F_AE11(l2_softc_t *);
static void F_AE12(l2_softc_t *);
static void F_AR05(l2_softc_t *);
static void F_AR06(l2_softc_t *);
static void F_AR07(l2_softc_t *);
static void F_AR08(l2_softc_t *);
static void F_AR09(l2_softc_t *);
static void F_AR10(l2_softc_t *);
static void F_AR11(l2_softc_t *);
static void F_MF01(l2_softc_t *);
static void F_MF05(l2_softc_t *);
static void F_MF06(l2_softc_t *);
static void F_MF07(l2_softc_t *);
static void F_MF08(l2_softc_t *);
static void F_MF09(l2_softc_t *);
static void F_MF10(l2_softc_t *);
static void F_MF11(l2_softc_t *);
static void F_MF12(l2_softc_t *);
static void F_MF13(l2_softc_t *);
static void F_MF14(l2_softc_t *);
static void F_MF15(l2_softc_t *);
static void F_MF16(l2_softc_t *);
static void F_MF17(l2_softc_t *);
static void F_MF18(l2_softc_t *);
static void F_MF19(l2_softc_t *);
static void F_MF20(l2_softc_t *);
static void F_TR01(l2_softc_t *);
static void F_TR05(l2_softc_t *);
static void F_TR06(l2_softc_t *);
static void F_TR07(l2_softc_t *);
static void F_TR08(l2_softc_t *);
static void F_TR09(l2_softc_t *);
static void F_TR10(l2_softc_t *);
static void F_TR11(l2_softc_t *);
static void F_TR12(l2_softc_t *);
static void F_TR13(l2_softc_t *);
static void F_TR15(l2_softc_t *);
static void F_TR16(l2_softc_t *);
static void F_TR17(l2_softc_t *);
static void F_TR18(l2_softc_t *);
static void F_TR19(l2_softc_t *);
static void F_TR20(l2_softc_t *);
static void F_ILL(l2_softc_t *);
static void F_NCNA(l2_softc_t *);
/*---------------------------------------------------------------------------*
* FSM illegal state default action
*---------------------------------------------------------------------------*/
static void
F_ILL(l2_softc_t *l2sc)
{
NDBGL2(L2_F_ERR, "FSM function F_ILL executing");
}
/*---------------------------------------------------------------------------*
* FSM No change, No action
*---------------------------------------------------------------------------*/
static void
F_NCNA(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_NCNA executing");
}
/*---------------------------------------------------------------------------*
* layer 2 state transition table
*---------------------------------------------------------------------------*/
struct l2state_tab {
void (*func)(l2_softc_t *); /* function to execute */
int newstate; /* next state */
} l2state_tab[N_EVENTS][N_STATES] = {
/* STATE: ST_TEI_UNAS, ST_ASG_AW_TEI, ST_EST_AW_TEI, ST_TEI_ASGD, ST_AW_EST, ST_AW_REL, ST_MULTIFR, ST_TIMREC, ST_SUBSET, ILLEGAL STATE */
/* -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------*/
/*EV_DLESTRQ*/{ {F_TU01, ST_EST_AW_TEI}, {F_NCNA, ST_EST_AW_TEI}, {F_ILL, ST_ILL}, {F_T01, ST_AW_EST}, {F_AE01, ST_AW_EST}, {F_ILL, ST_ILL}, {F_MF01, ST_AW_EST}, {F_TR01, ST_AW_EST}, {F_ILL, ST_ILL}, {F_ILL, ST_ILL} },
/*EV_DLUDTRQ*/{ {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_MDASGRQ*/{ {F_TU03, ST_TEI_ASGD}, {F_TA03, ST_TEI_ASGD}, {F_TE03, ST_AW_EST}, {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_MDERRRS*/{ {F_ILL, ST_ILL}, {F_TA04, ST_TEI_UNAS}, {F_TE04, ST_TEI_UNAS}, {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_PSDEACT*/{ {F_ILL, ST_ILL}, {F_TA05, ST_TEI_UNAS}, {F_TE05, ST_TEI_UNAS}, {F_T05, ST_TEI_ASGD}, {F_AE05, ST_TEI_ASGD}, {F_AR05, ST_TEI_ASGD}, {F_MF05, ST_TEI_ASGD}, {F_TR05, ST_TEI_ASGD}, {F_ILL, ST_ILL}, {F_ILL, ST_ILL} },
/*EV_MDREMRQ*/{ {F_ILL, ST_ILL}, {F_ILL, ST_ILL}, {F_ILL, ST_ILL}, {F_T06, ST_TEI_UNAS}, {F_AE06, ST_TEI_UNAS}, {F_AR06, ST_TEI_UNAS}, {F_MF06, ST_TEI_UNAS}, {F_TR06, ST_TEI_UNAS}, {F_ILL, ST_ILL}, {F_ILL, ST_ILL} },
/*EV_RXSABME*/{ {F_ILL, ST_ILL}, {F_ILL, ST_ILL}, {F_ILL, ST_ILL}, {F_T07, ST_SUBSET}, {F_AE07, ST_AW_EST}, {F_AR07, ST_AW_REL}, {F_MF07, ST_MULTIFR}, {F_TR07, ST_MULTIFR}, {F_ILL, ST_ILL}, {F_ILL, ST_ILL} },
/*EV_RXDISC */{ {F_ILL, ST_ILL}, {F_ILL, ST_ILL}, {F_ILL, ST_ILL}, {F_T08, ST_TEI_ASGD}, {F_AE08, ST_AW_EST}, {F_AR08, ST_AW_REL}, {F_MF08, ST_TEI_ASGD}, {F_TR08, ST_TEI_ASGD}, {F_ILL, ST_ILL}, {F_ILL, ST_ILL} },
/*EV_RXUA */{ {F_ILL, ST_ILL}, {F_ILL, ST_ILL}, {F_ILL, ST_ILL}, {F_T09, ST_TEI_ASGD}, {F_AE09, ST_SUBSET}, {F_AR09, ST_SUBSET}, {F_MF09, ST_MULTIFR}, {F_TR09, ST_TIMREC}, {F_ILL, ST_ILL}, {F_ILL, ST_ILL} },
/*EV_RXDM */{ {F_ILL, ST_ILL}, {F_ILL, ST_ILL}, {F_ILL, ST_ILL}, {F_T10, ST_SUBSET}, {F_AE10, ST_SUBSET}, {F_AR10, ST_SUBSET}, {F_MF10, ST_SUBSET}, {F_TR10, ST_AW_EST}, {F_ILL, ST_ILL}, {F_ILL, ST_ILL} },
/*EV_T200EXP*/{ {F_ILL, ST_ILL}, {F_ILL, ST_ILL}, {F_ILL, ST_ILL}, {F_ILL, ST_ILL}, {F_AE11, ST_SUBSET}, {F_AR11, ST_SUBSET}, {F_MF11, ST_TIMREC}, {F_TR11, ST_SUBSET}, {F_ILL, ST_ILL}, {F_ILL, ST_ILL} },
/*EV_DLDATRQ*/{ {F_ILL, ST_ILL}, {F_ILL, ST_ILL}, {F_ILL, ST_ILL}, {F_ILL, ST_ILL}, {F_AE12, ST_AW_EST}, {F_ILL, ST_ILL}, {F_MF12, ST_MULTIFR}, {F_TR12, ST_TIMREC}, {F_ILL, ST_ILL}, {F_ILL, ST_ILL} },
/*EV_DLRELRQ*/{ {F_ILL, ST_ILL}, {F_ILL, ST_ILL}, {F_ILL, ST_ILL}, {F_T13, ST_TEI_ASGD}, {F_ILL, ST_ILL}, {F_ILL, ST_ILL}, {F_MF13, ST_AW_REL}, {F_TR13, ST_AW_REL}, {F_ILL, ST_ILL}, {F_ILL, ST_ILL} },
/*EV_T203EXP*/{ {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_MF14, ST_TIMREC}, {F_ILL, ST_ILL}, {F_ILL, ST_ILL}, {F_ILL, ST_ILL} },
/*EV_OWNBUSY*/{ {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_MF15, ST_MULTIFR}, {F_TR15, ST_TIMREC}, {F_ILL, ST_ILL}, {F_ILL, ST_ILL} },
/*EV_OWNRDY */{ {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_MF16, ST_MULTIFR}, {F_TR16, ST_TIMREC}, {F_ILL, ST_ILL}, {F_ILL, ST_ILL} },
/*EV_RXRR */{ {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_MF17, ST_SUBSET}, {F_TR17, ST_SUBSET}, {F_ILL, ST_ILL}, {F_ILL, ST_ILL} },
/*EV_RXREJ */{ {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_MF18, ST_SUBSET}, {F_TR18, ST_SUBSET}, {F_ILL, ST_ILL}, {F_ILL, ST_ILL} },
/*EV_RXRNR */{ {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_MF19, ST_SUBSET}, {F_TR19, ST_SUBSET}, {F_ILL, ST_ILL}, {F_ILL, ST_ILL} },
/*EV_RXFRMR */{ {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_MF20, ST_AW_EST}, {F_TR20, ST_AW_EST}, {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} }
};
/*---------------------------------------------------------------------------*
* event handler, executes function and sets new state
*---------------------------------------------------------------------------*/
void i4b_next_l2state(l2_softc_t *l2sc, int event)
{
int currstate, newstate;
int (*savpostfsmfunc)(int) = NULL;
/* check event number */
if(event >= N_EVENTS)
panic("i4b_l2fsm.c: event >= N_EVENTS\n");
/* get current state and check it */
if((currstate = l2sc->Q921_state) >= N_STATES) /* failsafe */
panic("i4b_l2fsm.c: currstate >= N_STATES\n");
/* get new state and check it */
if((newstate = l2state_tab[event][currstate].newstate) >= N_STATES)
panic("i4b_l2fsm.c: newstate >= N_STATES\n");
if(newstate != ST_SUBSET)
{ /* state function does NOT set new state */
NDBGL2(L2_F_MSG, "FSM event [%s]: [%s/%d => %s/%d]",
l2event_text[event],
l2state_text[currstate], currstate,
l2state_text[newstate], newstate);
}
/* execute state transition function */
(*l2state_tab[event][currstate].func)(l2sc);
if(newstate == ST_SUBSET)
{ /* state function DOES set new state */
NDBGL2(L2_F_MSG, "FSM S-event [%s]: [%s => %s]", l2event_text[event],
l2state_text[currstate],
l2state_text[l2sc->Q921_state]);
}
/* check for illegal new state */
if(newstate == ST_ILL)
{
newstate = currstate;
NDBGL2(L2_F_ERR, "FSM illegal state, state = %s, event = %s!",
l2state_text[currstate],
l2event_text[event]);
}
/* check if state machine function has to set new state */
if(newstate != ST_SUBSET)
l2sc->Q921_state = newstate; /* no, we set new state */
if(l2sc->postfsmfunc != NULL)
{
NDBGL2(L2_F_MSG, "FSM executing postfsmfunc!");
/* try to avoid an endless loop */
savpostfsmfunc = l2sc->postfsmfunc;
l2sc->postfsmfunc = NULL;
(*savpostfsmfunc)(l2sc->postfsmarg);
}
}
#if DO_I4B_DEBUG
/*---------------------------------------------------------------------------*
* return pointer to current state description
*---------------------------------------------------------------------------*/
char *i4b_print_l2state(l2_softc_t *l2sc)
{
return((char *) l2state_text[l2sc->Q921_state]);
}
#endif
/*---------------------------------------------------------------------------*
* FSM state ST_TEI_UNAS event dl establish request
*---------------------------------------------------------------------------*/
static void
F_TU01(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_TU01 executing");
i4b_mdl_assign_ind(l2sc);
}
/*---------------------------------------------------------------------------*
* FSM state ST_TEI_UNAS event mdl assign request
*---------------------------------------------------------------------------*/
static void
F_TU03(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_TU03 executing");
}
/*---------------------------------------------------------------------------*
* FSM state ST_ASG_AW_TEI event mdl assign request
*---------------------------------------------------------------------------*/
static void
F_TA03(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_TA03 executing");
}
/*---------------------------------------------------------------------------*
* FSM state ST_ASG_AW_TEI event mdl error response
*---------------------------------------------------------------------------*/
static void
F_TA04(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_TA04 executing");
}
/*---------------------------------------------------------------------------*
* FSM state ST_ASG_AW_TEI event persistent deactivation
*---------------------------------------------------------------------------*/
static void
F_TA05(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_TA05 executing");
}
/*---------------------------------------------------------------------------*
* FSM state ST_EST_AW_TEI event mdl assign request
*---------------------------------------------------------------------------*/
static void
F_TE03(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_TE03 executing");
i4b_establish_data_link(l2sc);
l2sc->l3initiated = 1;
}
/*---------------------------------------------------------------------------*
* FSM state ST_EST_AW_TEI event mdl error response
*---------------------------------------------------------------------------*/
static void
F_TE04(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_TE04 executing");
l2sc->postfsmarg = l2sc->unit;
l2sc->postfsmfunc = DL_Rel_Ind_A;
}
/*---------------------------------------------------------------------------*
* FSM state ST_EST_AW_TEI event persistent deactivation
*---------------------------------------------------------------------------*/
static void
F_TE05(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_TE05 executing");
l2sc->postfsmarg = l2sc->unit;
l2sc->postfsmfunc = DL_Rel_Ind_A;
}
/*---------------------------------------------------------------------------*
* FSM state ST_TEI_ASGD event dl establish request
*---------------------------------------------------------------------------*/
static void
F_T01(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_T01 executing");
i4b_establish_data_link(l2sc);
l2sc->l3initiated = 1;
}
/*---------------------------------------------------------------------------*
* FSM state ST_TEI_ASGD event persistent deactivation
*---------------------------------------------------------------------------*/
static void
F_T05(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_T05 executing");
}
/*---------------------------------------------------------------------------*
* FSM state ST_TEI_ASGD event mdl remove request
*---------------------------------------------------------------------------*/
static void
F_T06(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_T06 executing");
/*XXX*/ i4b_mdl_assign_ind(l2sc);
}
/*---------------------------------------------------------------------------*
* FSM state ST_TEI_ASGD event rx'd SABME
*---------------------------------------------------------------------------*/
static void
F_T07(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_T07 executing");
/* XXX */
#ifdef NOTDEF
if(NOT able to establish)
{
i4b_tx_dm(l2sc, l2sc->rxd_PF);
l2sc->Q921_state = ST_TEI_ASGD;
return;
}
#endif
i4b_clear_exception_conditions(l2sc);
MDL_Status_Ind(l2sc->unit, STI_L2STAT, LAYER_ACTIVE);
i4b_tx_ua(l2sc, l2sc->rxd_PF);
l2sc->vs = 0;
l2sc->va = 0;
l2sc->vr = 0;
l2sc->postfsmarg = l2sc->unit;
l2sc->postfsmfunc = DL_Est_Ind_A;
i4b_T203_start(l2sc);
l2sc->Q921_state = ST_MULTIFR;
}
/*---------------------------------------------------------------------------*
* FSM state ST_TEI_ASGD event rx'd DISC
*---------------------------------------------------------------------------*/
static void
F_T08(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_T08 executing");
MDL_Status_Ind(l2sc->unit, STI_L2STAT, LAYER_IDLE);
i4b_tx_ua(l2sc, l2sc->rxd_PF);
}
/*---------------------------------------------------------------------------*
* FSM state ST_TEI_ASGD event rx'd UA
*---------------------------------------------------------------------------*/
static void
F_T09(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_T09 executing");
i4b_mdl_error_ind(l2sc, "F_T09", MDL_ERR_C);
i4b_mdl_error_ind(l2sc, "F_T09", MDL_ERR_D);
}
/*---------------------------------------------------------------------------*
* FSM state ST_TEI_ASGD event rx'd DM
*---------------------------------------------------------------------------*/
static void
F_T10(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_T10 executing");
if(l2sc->rxd_PF)
{
l2sc->Q921_state = ST_TEI_ASGD;
}
else
{
#ifdef NOTDEF
if(NOT able_to_etablish)
{
l2sc->Q921_state = ST_TEI_ASGD;
return;
}
#endif
i4b_establish_data_link(l2sc);
l2sc->l3initiated = 1;
l2sc->Q921_state = ST_AW_EST;
}
}
/*---------------------------------------------------------------------------*
* FSM state ST_TEI_ASGD event dl release request
*---------------------------------------------------------------------------*/
static void
F_T13(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_T13 executing");
l2sc->postfsmarg = l2sc->unit;
l2sc->postfsmfunc = DL_Rel_Cnf_A;
}
/*---------------------------------------------------------------------------*
* FSM state ST_AW_EST event dl establish request
*---------------------------------------------------------------------------*/
static void
F_AE01(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_AE01 executing");
i4b_Dcleanifq(&l2sc->i_queue);
l2sc->l3initiated = 1;
}
/*---------------------------------------------------------------------------*
* FSM state ST_AW_EST event persistent deactivation
*---------------------------------------------------------------------------*/
static void
F_AE05(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_AE05 executing");
i4b_Dcleanifq(&l2sc->i_queue);
l2sc->postfsmarg = l2sc->unit;
l2sc->postfsmfunc = DL_Rel_Ind_A;
i4b_T200_stop(l2sc);
}
/*---------------------------------------------------------------------------*
* FSM state ST_AW_EST event mdl remove request
*---------------------------------------------------------------------------*/
static void
F_AE06(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_AE06 executing");
i4b_Dcleanifq(&l2sc->i_queue);
l2sc->postfsmarg = l2sc->unit;
l2sc->postfsmfunc = DL_Rel_Ind_A;
i4b_T200_stop(l2sc);
/*XXX*/ i4b_mdl_assign_ind(l2sc);
}
/*---------------------------------------------------------------------------*
* FSM state ST_AW_EST event rx'd SABME
*---------------------------------------------------------------------------*/
static void
F_AE07(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_AE07 executing");
MDL_Status_Ind(l2sc->unit, STI_L2STAT, LAYER_ACTIVE);
i4b_tx_ua(l2sc, l2sc->rxd_PF);
}
/*---------------------------------------------------------------------------*
* FSM state ST_AW_EST event rx'd DISC
*---------------------------------------------------------------------------*/
static void
F_AE08(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_AE08 executing");
i4b_tx_dm(l2sc, l2sc->rxd_PF);
}
/*---------------------------------------------------------------------------*
* FSM state ST_AW_EST event rx'd UA
*---------------------------------------------------------------------------*/
static void
F_AE09(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_AE09 executing");
if(l2sc->rxd_PF == 0)
{
i4b_mdl_error_ind(l2sc, "F_AE09", MDL_ERR_D);
l2sc->Q921_state = ST_AW_EST;
}
else
{
if(l2sc->l3initiated)
{
l2sc->l3initiated = 0;
l2sc->vr = 0;
l2sc->postfsmarg = l2sc->unit;
l2sc->postfsmfunc = DL_Est_Cnf_A;
}
else
{
if(l2sc->vs != l2sc->va)
{
i4b_Dcleanifq(&l2sc->i_queue);
l2sc->postfsmarg = l2sc->unit;
l2sc->postfsmfunc = DL_Est_Ind_A;
}
}
MDL_Status_Ind(l2sc->unit, STI_L2STAT, LAYER_ACTIVE);
i4b_T200_stop(l2sc);
i4b_T203_start(l2sc);
l2sc->vs = 0;
l2sc->va = 0;
l2sc->Q921_state = ST_MULTIFR;
}
}
/*---------------------------------------------------------------------------*
* FSM state ST_AW_EST event rx'd DM
*---------------------------------------------------------------------------*/
static void
F_AE10(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_AE10 executing");
if(l2sc->rxd_PF == 0)
{
l2sc->Q921_state = ST_AW_EST;
}
else
{
i4b_Dcleanifq(&l2sc->i_queue);
l2sc->postfsmarg = l2sc->unit;
l2sc->postfsmfunc = DL_Rel_Ind_A;
i4b_T200_stop(l2sc);
l2sc->Q921_state = ST_TEI_ASGD;
}
}
/*---------------------------------------------------------------------------*
* FSM state ST_AW_EST event T200 expiry
*---------------------------------------------------------------------------*/
static void
F_AE11(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_AE11 executing");
if(l2sc->RC >= N200)
{
i4b_Dcleanifq(&l2sc->i_queue);
i4b_mdl_error_ind(l2sc, "F_AE11", MDL_ERR_G);
l2sc->postfsmarg = l2sc->unit;
l2sc->postfsmfunc = DL_Rel_Ind_A;
l2sc->Q921_state = ST_TEI_ASGD;
}
else
{
l2sc->RC++;
i4b_tx_sabme(l2sc, P1);
i4b_T200_start(l2sc);
l2sc->Q921_state = ST_AW_EST;
}
}
/*---------------------------------------------------------------------------*
* FSM state ST_AW_EST event dl data request
*---------------------------------------------------------------------------*/
static void
F_AE12(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_AE12 executing");
if(l2sc->l3initiated == 0)
{
i4b_i_frame_queued_up(l2sc);
}
}
/*---------------------------------------------------------------------------*
* FSM state ST_AW_REL event persistent deactivation
*---------------------------------------------------------------------------*/
static void
F_AR05(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_AR05 executing");
l2sc->postfsmarg = l2sc->unit;
l2sc->postfsmfunc = DL_Rel_Cnf_A;
i4b_T200_stop(l2sc);
}
/*---------------------------------------------------------------------------*
* FSM state ST_AW_REL event mdl remove request
*---------------------------------------------------------------------------*/
static void
F_AR06(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_AR06 executing");
l2sc->postfsmarg = l2sc->unit;
l2sc->postfsmfunc = DL_Rel_Cnf_A;
i4b_T200_stop(l2sc);
/*XXX*/ i4b_mdl_assign_ind(l2sc);
}
/*---------------------------------------------------------------------------*
* FSM state ST_AW_REL event rx'd SABME
*---------------------------------------------------------------------------*/
static void
F_AR07(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_AR07 executing");
i4b_tx_dm(l2sc, l2sc->rxd_PF);
}
/*---------------------------------------------------------------------------*
* FSM state ST_AW_REL event rx'd DISC
*---------------------------------------------------------------------------*/
static void
F_AR08(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_AR08 executing");
MDL_Status_Ind(l2sc->unit, STI_L2STAT, LAYER_IDLE);
i4b_tx_ua(l2sc, l2sc->rxd_PF);
}
/*---------------------------------------------------------------------------*
* FSM state ST_AW_REL event rx'd UA
*---------------------------------------------------------------------------*/
static void
F_AR09(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_AR09 executing");
if(l2sc->rxd_PF)
{
l2sc->postfsmarg = l2sc->unit;
l2sc->postfsmfunc = DL_Rel_Cnf_A;
i4b_T200_stop(l2sc);
l2sc->Q921_state = ST_TEI_ASGD;
}
else
{
i4b_mdl_error_ind(l2sc, "F_AR09", MDL_ERR_D);
l2sc->Q921_state = ST_AW_REL;
}
}
/*---------------------------------------------------------------------------*
* FSM state ST_AW_REL event rx'd DM
*---------------------------------------------------------------------------*/
static void
F_AR10(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_AR10 executing");
if(l2sc->rxd_PF)
{
l2sc->postfsmarg = l2sc->unit;
l2sc->postfsmfunc = DL_Rel_Cnf_A;
i4b_T200_stop(l2sc);
l2sc->Q921_state = ST_TEI_ASGD;
}
else
{
l2sc->Q921_state = ST_AW_REL;
}
}
/*---------------------------------------------------------------------------*
* FSM state ST_AW_REL event T200 expiry
*---------------------------------------------------------------------------*/
static void
F_AR11(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_AR11 executing");
if(l2sc->RC >= N200)
{
i4b_mdl_error_ind(l2sc, "F_AR11", MDL_ERR_H);
l2sc->postfsmarg = l2sc->unit;
l2sc->postfsmfunc = DL_Rel_Cnf_A;
l2sc->Q921_state = ST_TEI_ASGD;
}
else
{
l2sc->RC++;
i4b_tx_disc(l2sc, P1);
i4b_T200_start(l2sc);
l2sc->Q921_state = ST_AW_REL;
}
}
/*---------------------------------------------------------------------------*
* FSM state ST_MULTIFR event dl establish request
*---------------------------------------------------------------------------*/
static void
F_MF01(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_MF01 executing");
i4b_Dcleanifq(&l2sc->i_queue);
i4b_establish_data_link(l2sc);
l2sc->l3initiated = 1;
}
/*---------------------------------------------------------------------------*
* FSM state ST_MULTIFR event persistent deactivation
*---------------------------------------------------------------------------*/
static void
F_MF05(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_MF05 executing");
i4b_Dcleanifq(&l2sc->i_queue);
l2sc->postfsmarg = l2sc->unit;
l2sc->postfsmfunc = DL_Rel_Ind_A;
i4b_T200_stop(l2sc);
i4b_T203_stop(l2sc);
}
/*---------------------------------------------------------------------------*
* FSM state ST_MULTIFR event mdl remove request
*---------------------------------------------------------------------------*/
static void
F_MF06(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_MF06 executing");
i4b_Dcleanifq(&l2sc->i_queue);
l2sc->postfsmarg = l2sc->unit;
l2sc->postfsmfunc = DL_Rel_Ind_A;
i4b_T200_stop(l2sc);
i4b_T203_stop(l2sc);
/*XXX*/ i4b_mdl_assign_ind(l2sc);
}
/*---------------------------------------------------------------------------*
* FSM state ST_MULTIFR event rx'd SABME
*---------------------------------------------------------------------------*/
static void
F_MF07(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_MF07 executing");
i4b_clear_exception_conditions(l2sc);
MDL_Status_Ind(l2sc->unit, STI_L2STAT, LAYER_ACTIVE);
i4b_tx_ua(l2sc, l2sc->rxd_PF);
i4b_mdl_error_ind(l2sc, "F_MF07", MDL_ERR_F);
if(l2sc->vs != l2sc->va)
{
i4b_Dcleanifq(&l2sc->i_queue);
l2sc->postfsmarg = l2sc->unit;
l2sc->postfsmfunc = DL_Est_Ind_A;
}
i4b_T200_stop(l2sc);
i4b_T203_start(l2sc);
l2sc->vs = 0;
l2sc->va = 0;
l2sc->vr = 0;
}
/*---------------------------------------------------------------------------*
* FSM state ST_MULTIFR event rx'd DISC
*---------------------------------------------------------------------------*/
static void
F_MF08(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_MF08 executing");
i4b_Dcleanifq(&l2sc->i_queue);
MDL_Status_Ind(l2sc->unit, STI_L2STAT, LAYER_IDLE);
i4b_tx_ua(l2sc, l2sc->rxd_PF);
l2sc->postfsmarg = l2sc->unit;
l2sc->postfsmfunc = DL_Rel_Ind_A;
i4b_T200_stop(l2sc);
i4b_T203_stop(l2sc);
}
/*---------------------------------------------------------------------------*
* FSM state ST_MULTIFR event rx'd UA
*---------------------------------------------------------------------------*/
static void
F_MF09(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_MF09 executing");
if(l2sc->rxd_PF)
i4b_mdl_error_ind(l2sc, "F_MF09", MDL_ERR_C);
else
i4b_mdl_error_ind(l2sc, "F_MF09", MDL_ERR_D);
}
/*---------------------------------------------------------------------------*
* FSM state ST_MULTIFR event rx'd DM
*---------------------------------------------------------------------------*/
static void
F_MF10(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_MF10 executing");
if(l2sc->rxd_PF)
{
i4b_mdl_error_ind(l2sc, "F_MF10", MDL_ERR_B);
l2sc->Q921_state = ST_MULTIFR;
}
else
{
i4b_mdl_error_ind(l2sc, "F_MF10", MDL_ERR_E);
i4b_establish_data_link(l2sc);
l2sc->l3initiated = 0;
l2sc->Q921_state = ST_AW_EST;
}
}
/*---------------------------------------------------------------------------*
* FSM state ST_MULTIFR event T200 expiry
*---------------------------------------------------------------------------*/
static void
F_MF11(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_MF11 executing");
l2sc->RC = 0;
i4b_transmit_enquire(l2sc);
l2sc->RC++;
}
/*---------------------------------------------------------------------------*
* FSM state ST_MULTIFR event dl data request
*---------------------------------------------------------------------------*/
static void
F_MF12(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_MF12 executing");
i4b_i_frame_queued_up(l2sc);
}
/*---------------------------------------------------------------------------*
* FSM state ST_MULTIFR event dl release request
*---------------------------------------------------------------------------*/
static void
F_MF13(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_MF13 executing");
i4b_Dcleanifq(&l2sc->i_queue);
l2sc->RC = 0;
i4b_tx_disc(l2sc, P1);
i4b_T203_stop(l2sc);
i4b_T200_restart(l2sc);
}
/*---------------------------------------------------------------------------*
* FSM state ST_MULTIFR event T203 expiry
*---------------------------------------------------------------------------*/
static void
F_MF14(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_MF14 executing");
i4b_transmit_enquire(l2sc);
l2sc->RC = 0;
}
/*---------------------------------------------------------------------------*
* FSM state ST_MULTIFR event set own rx busy
*---------------------------------------------------------------------------*/
static void
F_MF15(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_MF15 executing");
if(l2sc->own_busy == 0)
{
l2sc->own_busy = 1;
i4b_tx_rnr_response(l2sc, F0); /* wrong in Q.921 03/93 p 64 */
l2sc->ack_pend = 0;
}
}
/*---------------------------------------------------------------------------*
* FSM state ST_MULTIFR event clear own rx busy
*---------------------------------------------------------------------------*/
static void
F_MF16(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_MF16 executing");
if(l2sc->own_busy != 0)
{
l2sc->own_busy = 0;
i4b_tx_rr_response(l2sc, F0); /* wrong in Q.921 03/93 p 64 */
l2sc->ack_pend = 0;
}
}
/*---------------------------------------------------------------------------*
* FSM state ST_MULTIFR event rx'd RR
*---------------------------------------------------------------------------*/
static void
F_MF17(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_MF17 executing");
l2sc->peer_busy = 0;
if(l2sc->rxd_CR == CR_CMD_FROM_NT)
{
if(l2sc->rxd_PF == 1)
{
i4b_enquiry_response(l2sc);
}
}
else
{
if(l2sc->rxd_PF == 1)
{
i4b_mdl_error_ind(l2sc, "F_MF17", MDL_ERR_A);
}
}
if(i4b_l2_nr_ok(l2sc->rxd_NR, l2sc->va, l2sc->vs))
{
if(l2sc->rxd_NR == l2sc->vs)
{
l2sc->va = l2sc->rxd_NR;
i4b_T200_stop(l2sc);
i4b_T203_restart(l2sc);
}
else if(l2sc->rxd_NR != l2sc->va)
{
l2sc->va = l2sc->rxd_NR;
i4b_T200_restart(l2sc);
}
l2sc->Q921_state = ST_MULTIFR;
}
else
{
i4b_nr_error_recovery(l2sc);
l2sc->Q921_state = ST_AW_EST;
}
}
/*---------------------------------------------------------------------------*
* FSM state ST_MULTIFR event rx'd REJ
*---------------------------------------------------------------------------*/
static void
F_MF18(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_MF18 executing");
l2sc->peer_busy = 0;
if(l2sc->rxd_CR == CR_CMD_FROM_NT)
{
if(l2sc->rxd_PF == 1)
{
i4b_enquiry_response(l2sc);
}
}
else
{
if(l2sc->rxd_PF == 1)
{
i4b_mdl_error_ind(l2sc, "F_MF18", MDL_ERR_A);
}
}
if(i4b_l2_nr_ok(l2sc->rxd_NR, l2sc->va, l2sc->vs))
{
l2sc->va = l2sc->rxd_NR;
i4b_T200_stop(l2sc);
i4b_T203_start(l2sc);
i4b_invoke_retransmission(l2sc, l2sc->rxd_NR);
l2sc->Q921_state = ST_MULTIFR;
}
else
{
i4b_nr_error_recovery(l2sc);
l2sc->Q921_state = ST_AW_EST;
}
}
/*---------------------------------------------------------------------------*
* FSM state ST_MULTIFR event rx'd RNR
*---------------------------------------------------------------------------*/
static void
F_MF19(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_MF19 executing");
l2sc->peer_busy = 1;
if(l2sc->rxd_CR == CR_CMD_FROM_NT)
{
if(l2sc->rxd_PF == 1)
{
i4b_enquiry_response(l2sc);
}
}
else
{
if(l2sc->rxd_PF == 1)
{
i4b_mdl_error_ind(l2sc, "F_MF19", MDL_ERR_A);
}
}
if(i4b_l2_nr_ok(l2sc->rxd_NR, l2sc->va, l2sc->vs))
{
l2sc->va = l2sc->rxd_NR;
i4b_T203_stop(l2sc);
i4b_T200_restart(l2sc);
l2sc->Q921_state = ST_MULTIFR;
}
else
{
i4b_nr_error_recovery(l2sc);
l2sc->Q921_state = ST_AW_EST;
}
}
/*---------------------------------------------------------------------------*
* FSM state ST_MULTIFR event rx'd FRMR
*---------------------------------------------------------------------------*/
static void
F_MF20(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_MF20 executing");
i4b_mdl_error_ind(l2sc, "F_MF20", MDL_ERR_K);
i4b_establish_data_link(l2sc);
l2sc->l3initiated = 0;
}
/*---------------------------------------------------------------------------*
* FSM state ST_TIMREC event dl establish request
*---------------------------------------------------------------------------*/
static void
F_TR01(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_TR01 executing");
i4b_Dcleanifq(&l2sc->i_queue);
i4b_establish_data_link(l2sc);
l2sc->l3initiated = 1;
}
/*---------------------------------------------------------------------------*
* FSM state ST_TIMREC event persistent deactivation
*---------------------------------------------------------------------------*/
static void
F_TR05(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_TR05 executing");
i4b_Dcleanifq(&l2sc->i_queue);
l2sc->postfsmarg = l2sc->unit;
l2sc->postfsmfunc = DL_Rel_Ind_A;
i4b_T200_stop(l2sc);
}
/*---------------------------------------------------------------------------*
* FSM state ST_TIMREC event mdl remove request
*---------------------------------------------------------------------------*/
static void
F_TR06(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_TR06 executing");
i4b_Dcleanifq(&l2sc->i_queue);
l2sc->postfsmarg = l2sc->unit;
l2sc->postfsmfunc = DL_Rel_Ind_A;
i4b_T200_stop(l2sc);
/*XXX*/ i4b_mdl_assign_ind(l2sc);
}
/*---------------------------------------------------------------------------*
* FSM state ST_TIMREC event rx'd SABME
*---------------------------------------------------------------------------*/
static void
F_TR07(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_TR07 executing");
i4b_clear_exception_conditions(l2sc);
MDL_Status_Ind(l2sc->unit, STI_L2STAT, LAYER_ACTIVE);
i4b_tx_ua(l2sc, l2sc->rxd_PF);
i4b_mdl_error_ind(l2sc, "F_TR07", MDL_ERR_F);
if(l2sc->vs != l2sc->va)
{
i4b_Dcleanifq(&l2sc->i_queue);
l2sc->postfsmarg = l2sc->unit;
l2sc->postfsmfunc = DL_Est_Ind_A;
}
i4b_T200_stop(l2sc);
i4b_T203_start(l2sc);
l2sc->vs = 0;
l2sc->va = 0;
l2sc->vr = 0;
}
/*---------------------------------------------------------------------------*
* FSM state ST_TIMREC event rx'd DISC
*---------------------------------------------------------------------------*/
static void
F_TR08(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_TR08 executing");
i4b_Dcleanifq(&l2sc->i_queue);
MDL_Status_Ind(l2sc->unit, STI_L2STAT, LAYER_IDLE);
i4b_tx_ua(l2sc, l2sc->rxd_PF);
l2sc->postfsmarg = l2sc->unit;
l2sc->postfsmfunc = DL_Rel_Ind_A;
i4b_T200_stop(l2sc);
}
/*---------------------------------------------------------------------------*
* FSM state ST_TIMREC event rx'd UA
*---------------------------------------------------------------------------*/
static void
F_TR09(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_TR09 executing");
if(l2sc->rxd_PF)
i4b_mdl_error_ind(l2sc, "F_TR09", MDL_ERR_C);
else
i4b_mdl_error_ind(l2sc, "F_TR09", MDL_ERR_D);
}
/*---------------------------------------------------------------------------*
* FSM state ST_TIMREC event rx'd DM
*---------------------------------------------------------------------------*/
static void
F_TR10(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_TR10 executing");
if(l2sc->rxd_PF)
{
i4b_mdl_error_ind(l2sc, "F_TR10", MDL_ERR_B);
}
else
{
i4b_mdl_error_ind(l2sc, "F_TR10", MDL_ERR_E);
}
i4b_establish_data_link(l2sc);
l2sc->l3initiated = 0;
}
/*---------------------------------------------------------------------------*
* FSM state ST_TIMREC event T200 expiry
*---------------------------------------------------------------------------*/
static void
F_TR11(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_TR11 executing");
if(l2sc->RC >= N200)
{
i4b_mdl_error_ind(l2sc, "F_TR11", MDL_ERR_I);
i4b_establish_data_link(l2sc);
l2sc->l3initiated = 0;
l2sc->Q921_state = ST_AW_EST;
}
else
{
i4b_transmit_enquire(l2sc);
l2sc->RC++;
l2sc->Q921_state = ST_TIMREC;
}
}
/*---------------------------------------------------------------------------*
* FSM state ST_TIMREC event dl data request
*---------------------------------------------------------------------------*/
static void
F_TR12(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_TR12 executing");
i4b_i_frame_queued_up(l2sc);
}
/*---------------------------------------------------------------------------*
* FSM state ST_TIMREC event dl release request
*---------------------------------------------------------------------------*/
static void
F_TR13(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_TR13 executing");
i4b_Dcleanifq(&l2sc->i_queue);
l2sc->RC = 0;
i4b_tx_disc(l2sc, P1);
i4b_T200_restart(l2sc);
}
/*---------------------------------------------------------------------------*
* FSM state ST_TIMREC event set own rx busy
*---------------------------------------------------------------------------*/
static void
F_TR15(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_TR15 executing");
if(l2sc->own_busy == 0)
{
l2sc->own_busy = 1;
i4b_tx_rnr_response(l2sc, F0);
l2sc->ack_pend = 0;
}
}
/*---------------------------------------------------------------------------*
* FSM state ST_TIMREC event clear own rx busy
*---------------------------------------------------------------------------*/
static void
F_TR16(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_TR16 executing");
if(l2sc->own_busy != 0)
{
l2sc->own_busy = 0;
i4b_tx_rr_response(l2sc, F0); /* this is wrong */
/* in Q.921 03/93 p 74 ! */
l2sc->ack_pend = 0;
}
}
/*---------------------------------------------------------------------------*
* FSM state ST_TIMREC event rx'd RR
*---------------------------------------------------------------------------*/
static void
F_TR17(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_TR17 executing");
l2sc->peer_busy = 0;
if(l2sc->rxd_CR == CR_CMD_FROM_NT)
{
if(l2sc->rxd_PF == 1)
{
i4b_enquiry_response(l2sc);
}
}
else
{
if(l2sc->rxd_PF == 1)
{
if(i4b_l2_nr_ok(l2sc->rxd_NR, l2sc->va, l2sc->vs))
{
l2sc->va = l2sc->rxd_NR;
i4b_T200_stop(l2sc);
i4b_T203_start(l2sc);
i4b_invoke_retransmission(l2sc, l2sc->rxd_NR);
l2sc->Q921_state = ST_MULTIFR;
return;
}
else
{
i4b_nr_error_recovery(l2sc);
l2sc->Q921_state = ST_AW_EST;
return;
}
}
}
if(i4b_l2_nr_ok(l2sc->rxd_NR, l2sc->va, l2sc->vs))
{
l2sc->va = l2sc->rxd_NR;
l2sc->Q921_state = ST_TIMREC;
}
else
{
i4b_nr_error_recovery(l2sc);
l2sc->Q921_state = ST_AW_EST;
}
}
/*---------------------------------------------------------------------------*
* FSM state ST_TIMREC event
*---------------------------------------------------------------------------*/
static void
F_TR18(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_TR18 executing");
l2sc->peer_busy = 0;
if(l2sc->rxd_CR == CR_CMD_FROM_NT)
{
if(l2sc->rxd_PF == 1)
{
i4b_enquiry_response(l2sc);
}
}
else
{
if(l2sc->rxd_PF == 1)
{
if(i4b_l2_nr_ok(l2sc->rxd_NR, l2sc->va, l2sc->vs))
{
l2sc->va = l2sc->rxd_NR;
i4b_T200_stop(l2sc);
i4b_T203_start(l2sc);
i4b_invoke_retransmission(l2sc, l2sc->rxd_NR);
l2sc->Q921_state = ST_MULTIFR;
return;
}
else
{
i4b_nr_error_recovery(l2sc);
l2sc->Q921_state = ST_AW_EST;
return;
}
}
}
if(i4b_l2_nr_ok(l2sc->rxd_NR, l2sc->va, l2sc->vs))
{
l2sc->va = l2sc->rxd_NR;
l2sc->Q921_state = ST_TIMREC;
}
else
{
i4b_nr_error_recovery(l2sc);
l2sc->Q921_state = ST_AW_EST;
}
}
/*---------------------------------------------------------------------------*
* FSM state ST_TIMREC event rx'd RNR
*---------------------------------------------------------------------------*/
static void
F_TR19(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_TR19 executing");
l2sc->peer_busy = 0;
if(l2sc->rxd_CR == CR_CMD_FROM_NT)
{
if(l2sc->rxd_PF == 1)
{
i4b_enquiry_response(l2sc);
}
}
else
{
if(l2sc->rxd_PF == 1)
{
if(i4b_l2_nr_ok(l2sc->rxd_NR, l2sc->va, l2sc->vs))
{
l2sc->va = l2sc->rxd_NR;
i4b_T200_restart(l2sc);
i4b_invoke_retransmission(l2sc, l2sc->rxd_NR);
l2sc->Q921_state = ST_MULTIFR;
return;
}
else
{
i4b_nr_error_recovery(l2sc);
l2sc->Q921_state = ST_AW_EST;
return;
}
}
}
if(i4b_l2_nr_ok(l2sc->rxd_NR, l2sc->va, l2sc->vs))
{
l2sc->va = l2sc->rxd_NR;
l2sc->Q921_state = ST_TIMREC;
}
else
{
i4b_nr_error_recovery(l2sc);
l2sc->Q921_state = ST_AW_EST;
}
}
/*---------------------------------------------------------------------------*
* FSM state ST_TIMREC event rx'd FRMR
*---------------------------------------------------------------------------*/
static void
F_TR20(l2_softc_t *l2sc)
{
NDBGL2(L2_F_MSG, "FSM function F_TR20 executing");
i4b_mdl_error_ind(l2sc, "F_TR20", MDL_ERR_K);
i4b_establish_data_link(l2sc);
l2sc->l3initiated = 0;
}
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