/* * Copyright (c) 1997, 2000 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 * ------------------------- * * $Id: i4b_l2fsm.c,v 1.5 2002/05/21 10:31:10 martin Exp $ * * $FreeBSD$ * * last edit-date: [Fri Jan 5 11:33:47 2001] * *---------------------------------------------------------------------------*/ #include __KERNEL_RCSID(0, "$NetBSD: i4b_l2fsm.c,v 1.5 2002/05/21 10:31:10 martin Exp $"); #ifdef __FreeBSD__ #include "i4bq921.h" #else #define NI4BQ921 1 #endif #if NI4BQ921 > 0 #include #include #include #include #include #include #if defined(__NetBSD__) && __NetBSD_Version__ >= 104230000 #include #endif #ifdef __FreeBSD__ #include #include #else #include #include #endif #include #include #include #include #include #include #include #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 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_TU03 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_TA03 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_TA04 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_TA05 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_TE03 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_TE04 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_TE05 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_T01 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_T05 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_T06 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_T07 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_T08 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_T09 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_T10 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_T13 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_AE01 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_AE05 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_AE06 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_AE07 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_AE08 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_AE09 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_AE10 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_AE11 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_AE12 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_AR05 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_AR06 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_AR07 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_AR08 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_AR09 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_AR10 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_AR11 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_MF01 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_MF05 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_MF06 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_MF07 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_MF08 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_MF09 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_MF10 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_MF11 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_MF12 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_MF13 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_MF14 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_MF15 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_MF16 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_MF17 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_MF18 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_MF19 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_MF20 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_TR01 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_TR05 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_TR06 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_TR07 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_TR08 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_TR09 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_TR10 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_TR11 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_TR12 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_TR13 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_TR15 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_TR16 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_TR17 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_TR18 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_TR19 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_TR20 __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_ILL __P((l2_softc_t *, struct isdn_l3_driver *)); static void F_NCNA __P((l2_softc_t *, struct isdn_l3_driver *)); /*---------------------------------------------------------------------------* * FSM illegal state default action *---------------------------------------------------------------------------*/ static void F_ILL(l2_softc_t *l2sc, struct isdn_l3_driver *drv) { NDBGL2(L2_F_ERR, "FSM function F_ILL executing"); } /*---------------------------------------------------------------------------* * FSM No change, No action *---------------------------------------------------------------------------*/ static void F_NCNA(l2_softc_t *l2sc, struct isdn_l3_driver *drv) { NDBGL2(L2_F_MSG, "FSM function F_NCNA executing"); } /*---------------------------------------------------------------------------* * layer 2 state transition table *---------------------------------------------------------------------------*/ struct l2state_tab { void (*func) __P((l2_softc_t *, struct isdn_l3_driver *)); /* 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, struct isdn_l3_driver *drv, int event) { int currstate, newstate; int (*savpostfsmfunc)(struct isdn_l3_driver *) = 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, drv); 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, struct isdn_l3_driver *drv) { 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, struct isdn_l3_driver *drv) { 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, struct isdn_l3_driver *drv) { 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, struct isdn_l3_driver *drv) { 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, struct isdn_l3_driver *drv) { 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, struct isdn_l3_driver *drv) { 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, struct isdn_l3_driver *drv) { NDBGL2(L2_F_MSG, "FSM function F_TE04 executing"); l2sc->postfsmarg = l2sc->drv; l2sc->postfsmfunc = i4b_dl_release_ind; } /*---------------------------------------------------------------------------* * FSM state ST_EST_AW_TEI event persistent deactivation *---------------------------------------------------------------------------*/ static void F_TE05(l2_softc_t *l2sc, struct isdn_l3_driver *drv) { NDBGL2(L2_F_MSG, "FSM function F_TE05 executing"); l2sc->postfsmarg = l2sc->drv; l2sc->postfsmfunc = i4b_dl_release_ind; } /*---------------------------------------------------------------------------* * FSM state ST_TEI_ASGD event dl establish request *---------------------------------------------------------------------------*/ static void F_T01(l2_softc_t *l2sc, struct isdn_l3_driver *drv) { 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, struct isdn_l3_driver *drv) { 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, struct isdn_l3_driver *drv) { 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, struct isdn_l3_driver *drv) { 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); i4b_mdl_status_ind(l2sc->drv, STI_L2STAT, LAYER_ACTIVE); i4b_tx_ua(l2sc, l2sc->rxd_PF); l2sc->vs = 0; l2sc->va = 0; l2sc->vr = 0; l2sc->postfsmarg = l2sc->drv; l2sc->postfsmfunc = i4b_dl_establish_ind; 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, struct isdn_l3_driver *drv) { NDBGL2(L2_F_MSG, "FSM function F_T08 executing"); i4b_mdl_status_ind(l2sc->drv, 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, struct isdn_l3_driver *drv) { 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, struct isdn_l3_driver *drv) { 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, struct isdn_l3_driver *drv) { NDBGL2(L2_F_MSG, "FSM function F_T13 executing"); l2sc->postfsmarg = l2sc->drv; l2sc->postfsmfunc = i4b_dl_release_cnf; } /*---------------------------------------------------------------------------* * FSM state ST_AW_EST event dl establish request *---------------------------------------------------------------------------*/ static void F_AE01(l2_softc_t *l2sc, struct isdn_l3_driver *drv) { 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, struct isdn_l3_driver *drv) { NDBGL2(L2_F_MSG, "FSM function F_AE05 executing"); i4b_Dcleanifq(&l2sc->i_queue); l2sc->postfsmarg = l2sc->drv; l2sc->postfsmfunc = i4b_dl_release_ind; i4b_T200_stop(l2sc); } /*---------------------------------------------------------------------------* * FSM state ST_AW_EST event mdl remove request *---------------------------------------------------------------------------*/ static void F_AE06(l2_softc_t *l2sc, struct isdn_l3_driver *drv) { NDBGL2(L2_F_MSG, "FSM function F_AE06 executing"); i4b_Dcleanifq(&l2sc->i_queue); l2sc->postfsmarg = l2sc->drv; l2sc->postfsmfunc = i4b_dl_release_ind; 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, struct isdn_l3_driver *drv) { NDBGL2(L2_F_MSG, "FSM function F_AE07 executing"); i4b_mdl_status_ind(l2sc->drv, 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, struct isdn_l3_driver *drv) { 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, struct isdn_l3_driver *drv) { 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->drv; l2sc->postfsmfunc = i4b_dl_establish_cnf; } else { if(l2sc->vs != l2sc->va) { i4b_Dcleanifq(&l2sc->i_queue); l2sc->postfsmarg = l2sc->drv; l2sc->postfsmfunc = i4b_dl_establish_ind; } } i4b_mdl_status_ind(l2sc->drv, 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, struct isdn_l3_driver *drv) { 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->drv; l2sc->postfsmfunc = i4b_dl_release_ind; 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, struct isdn_l3_driver *drv) { 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->drv; l2sc->postfsmfunc = i4b_dl_release_ind; 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, struct isdn_l3_driver *drv) { 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, struct isdn_l3_driver *drv) { NDBGL2(L2_F_MSG, "FSM function F_AR05 executing"); l2sc->postfsmarg = l2sc->drv; l2sc->postfsmfunc = i4b_dl_release_cnf; i4b_T200_stop(l2sc); } /*---------------------------------------------------------------------------* * FSM state ST_AW_REL event mdl remove request *---------------------------------------------------------------------------*/ static void F_AR06(l2_softc_t *l2sc, struct isdn_l3_driver *drv) { NDBGL2(L2_F_MSG, "FSM function F_AR06 executing"); l2sc->postfsmarg = l2sc->drv; l2sc->postfsmfunc = i4b_dl_release_cnf; 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, struct isdn_l3_driver *drv) { 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, struct isdn_l3_driver *drv) { NDBGL2(L2_F_MSG, "FSM function F_AR08 executing"); i4b_mdl_status_ind(l2sc->drv, 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, struct isdn_l3_driver *drv) { NDBGL2(L2_F_MSG, "FSM function F_AR09 executing"); if(l2sc->rxd_PF) { l2sc->postfsmarg = l2sc->drv; l2sc->postfsmfunc = i4b_dl_release_cnf; 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, struct isdn_l3_driver *drv) { NDBGL2(L2_F_MSG, "FSM function F_AR10 executing"); if(l2sc->rxd_PF) { l2sc->postfsmarg = l2sc->drv; l2sc->postfsmfunc = i4b_dl_release_cnf; 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, struct isdn_l3_driver *drv) { 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->drv; l2sc->postfsmfunc = i4b_dl_release_cnf; 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, struct isdn_l3_driver *drv) { 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, struct isdn_l3_driver *drv) { NDBGL2(L2_F_MSG, "FSM function F_MF05 executing"); i4b_Dcleanifq(&l2sc->i_queue); l2sc->postfsmarg = l2sc->drv; l2sc->postfsmfunc = i4b_dl_release_ind; i4b_T200_stop(l2sc); i4b_T203_stop(l2sc); } /*---------------------------------------------------------------------------* * FSM state ST_MULTIFR event mdl remove request *---------------------------------------------------------------------------*/ static void F_MF06(l2_softc_t *l2sc, struct isdn_l3_driver *drv) { NDBGL2(L2_F_MSG, "FSM function F_MF06 executing"); i4b_Dcleanifq(&l2sc->i_queue); l2sc->postfsmarg = l2sc->drv; l2sc->postfsmfunc = i4b_dl_release_ind; 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, struct isdn_l3_driver *drv) { NDBGL2(L2_F_MSG, "FSM function F_MF07 executing"); i4b_clear_exception_conditions(l2sc); i4b_mdl_status_ind(l2sc->drv, 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->drv; l2sc->postfsmfunc = i4b_dl_establish_ind; } 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, struct isdn_l3_driver *drv) { NDBGL2(L2_F_MSG, "FSM function F_MF08 executing"); i4b_Dcleanifq(&l2sc->i_queue); i4b_mdl_status_ind(l2sc->drv, STI_L2STAT, LAYER_IDLE); i4b_tx_ua(l2sc, l2sc->rxd_PF); l2sc->postfsmarg = l2sc->drv; l2sc->postfsmfunc = i4b_dl_release_ind; i4b_T200_stop(l2sc); i4b_T203_stop(l2sc); } /*---------------------------------------------------------------------------* * FSM state ST_MULTIFR event rx'd UA *---------------------------------------------------------------------------*/ static void F_MF09(l2_softc_t *l2sc, struct isdn_l3_driver *drv) { 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, struct isdn_l3_driver *drv) { 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, struct isdn_l3_driver *drv) { 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, struct isdn_l3_driver *drv) { 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, struct isdn_l3_driver *drv) { 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, struct isdn_l3_driver *drv) { 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, struct isdn_l3_driver *drv) { 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, struct isdn_l3_driver *drv) { 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, struct isdn_l3_driver *drv) { 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, struct isdn_l3_driver *drv) { 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, struct isdn_l3_driver *drv) { 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, struct isdn_l3_driver *drv) { 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, struct isdn_l3_driver *drv) { 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, struct isdn_l3_driver *drv) { NDBGL2(L2_F_MSG, "FSM function F_TR05 executing"); i4b_Dcleanifq(&l2sc->i_queue); l2sc->postfsmarg = l2sc->drv; l2sc->postfsmfunc = i4b_dl_release_ind; i4b_T200_stop(l2sc); } /*---------------------------------------------------------------------------* * FSM state ST_TIMREC event mdl remove request *---------------------------------------------------------------------------*/ static void F_TR06(l2_softc_t *l2sc, struct isdn_l3_driver *drv) { NDBGL2(L2_F_MSG, "FSM function F_TR06 executing"); i4b_Dcleanifq(&l2sc->i_queue); l2sc->postfsmarg = l2sc->drv; l2sc->postfsmfunc = i4b_dl_release_ind; 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, struct isdn_l3_driver *drv) { NDBGL2(L2_F_MSG, "FSM function F_TR07 executing"); i4b_clear_exception_conditions(l2sc); i4b_mdl_status_ind(l2sc->drv, 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->drv; l2sc->postfsmfunc = i4b_dl_establish_ind; } 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, struct isdn_l3_driver *drv) { NDBGL2(L2_F_MSG, "FSM function F_TR08 executing"); i4b_Dcleanifq(&l2sc->i_queue); i4b_mdl_status_ind(drv, STI_L2STAT, LAYER_IDLE); i4b_tx_ua(l2sc, l2sc->rxd_PF); l2sc->postfsmarg = drv; l2sc->postfsmfunc = i4b_dl_release_ind; i4b_T200_stop(l2sc); } /*---------------------------------------------------------------------------* * FSM state ST_TIMREC event rx'd UA *---------------------------------------------------------------------------*/ static void F_TR09(l2_softc_t *l2sc, struct isdn_l3_driver *drv) { 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, struct isdn_l3_driver *drv) { 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, struct isdn_l3_driver *drv) { 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, struct isdn_l3_driver *drv) { 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, struct isdn_l3_driver *drv) { 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, struct isdn_l3_driver *drv) { 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, struct isdn_l3_driver *drv) { 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, struct isdn_l3_driver *drv) { 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, struct isdn_l3_driver *drv) { 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, struct isdn_l3_driver *drv) { 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, struct isdn_l3_driver *drv) { 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; } #endif /* NI4BQ921 > 0 */