FreeBSD/Linux Kernel Cross Reference
sys/netisdn/i4b_l2timer.c

     /*
      * 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_l2timer.c - layer 2 timer handling
     *      --------------------------------------
     *
     *      $Id: i4b_l2timer.c,v 1.7 2003/10/03 16:38:44 pooka Exp $ 
     *
     * $FreeBSD$
     *
     *      last edit-date: [Fri Jan  5 11:33:47 2001]
     *
     *---------------------------------------------------------------------------*/
    
    #include <sys/cdefs.h>
    __KERNEL_RCSID(0, "$NetBSD: i4b_l2timer.c,v 1.7 2003/10/03 16:38:44 pooka Exp $");
    
    #ifdef __FreeBSD__
    #include "i4bq921.h"
    #else
    #define NI4BQ921        1
    #endif
    #if NI4BQ921 > 0
    
    #include <sys/param.h>
    #include <sys/kernel.h>
    #include <sys/systm.h>
    #include <sys/mbuf.h>
    #include <sys/socket.h>
    #include <net/if.h>
    
    #if defined(__NetBSD__) && __NetBSD_Version__ >= 104230000
    #include <sys/callout.h>
    #endif
    
    #ifdef __FreeBSD__
    #include <machine/i4b_debug.h>
    #include <machine/i4b_ioctl.h>
    #else
    #include <netisdn/i4b_debug.h>
    #include <netisdn/i4b_ioctl.h>
    #endif
    
    #include <netisdn/i4b_global.h>
    #include <netisdn/i4b_l2.h>
    #include <netisdn/i4b_l1l2.h>
    #include <netisdn/i4b_isdnq931.h>
    #include <netisdn/i4b_mbuf.h>
    #include <netisdn/i4b_l2fsm.h>
    #include <netisdn/i4b_l3l4.h>
    
    /*---------------------------------------------------------------------------*
     *      Q.921 timer T200 timeout function
     *---------------------------------------------------------------------------*/
    static void
    i4b_T200_timeout(l2_softc_t *l2sc)
    {
            NDBGL2(L2_T_ERR, "isdnif %d, RC = %d", l2sc->drv->isdnif, l2sc->RC);
            i4b_next_l2state(l2sc, l2sc->drv, EV_T200EXP);
    }
    
    /*---------------------------------------------------------------------------*
     *      Q.921 timer T200 start
     *---------------------------------------------------------------------------*/
    void
    i4b_T200_start(l2_softc_t *l2sc)
    {
            if(l2sc->T200 == TIMER_ACTIVE)
                    return;
                    
            NDBGL2(L2_T_MSG, "isdnif %d", l2sc->drv->isdnif);
            l2sc->T200 = TIMER_ACTIVE;
    
            START_TIMER(l2sc->T200_callout, i4b_T200_timeout, l2sc, T200DEF);
    }
    
   /*---------------------------------------------------------------------------*
    *      Q.921 timer T200 stop
    *---------------------------------------------------------------------------*/
   void
   i4b_T200_stop(l2_softc_t *l2sc)
   {
           int s;
           s = splnet();
           if(l2sc->T200 != TIMER_IDLE)
           {
                   STOP_TIMER(l2sc->T200_callout, i4b_T200_timeout, l2sc);
                   l2sc->T200 = TIMER_IDLE;
           }
           splx(s);
           NDBGL2(L2_T_MSG, "isdnif %d", l2sc->drv->isdnif);
   }
   
   /*---------------------------------------------------------------------------*
    *      Q.921 timer T200 restart
    *---------------------------------------------------------------------------*/
   void
   i4b_T200_restart(l2_softc_t *l2sc)
   {
           int s;
           s = splnet();
           if(l2sc->T200 != TIMER_IDLE)
           {
                   STOP_TIMER(l2sc->T200_callout, i4b_T200_timeout, l2sc);
           }
           else
           {
                   l2sc->T200 = TIMER_ACTIVE;
           }
   
           START_TIMER(l2sc->T200_callout, i4b_T200_timeout, l2sc, T200DEF);
           splx(s);
           NDBGL2(L2_T_MSG, "isdnif %d", l2sc->drv->isdnif);
   }
   
   /*---------------------------------------------------------------------------*
    *      Q.921 timer T202 timeout function
    *---------------------------------------------------------------------------*/
   static void
   i4b_T202_timeout(l2_softc_t *l2sc)
   {
           NDBGL2(L2_T_ERR, "isdnif %d, N202 = %d", l2sc->drv->isdnif, l2sc->N202);
           
           if(--(l2sc->N202))
           {
                   (*l2sc->T202func)(l2sc);
           }
   }
   
   /*---------------------------------------------------------------------------*
    *      Q.921 timer T202 start
    *---------------------------------------------------------------------------*/
   void
   i4b_T202_start(l2_softc_t *l2sc)
   {
           if (l2sc->N202 == TIMER_ACTIVE)
                   return;
   
           NDBGL2(L2_T_MSG, "isdnif %d", l2sc->drv->isdnif);
           l2sc->N202 = N202DEF;   
           l2sc->T202 = TIMER_ACTIVE;
   
           START_TIMER(l2sc->T202_callout, i4b_T202_timeout, l2sc, T202DEF);
   }
   
   /*---------------------------------------------------------------------------*
    *      Q.921 timer T202 stop
    *---------------------------------------------------------------------------*/
   void
   i4b_T202_stop(l2_softc_t *l2sc)
   {
           int s;
           s = splnet();
           if(l2sc->T202 != TIMER_IDLE)
           {
                   STOP_TIMER(l2sc->T202_callout, i4b_T202_timeout, l2sc);
                   l2sc->T202 = TIMER_IDLE;
           }
           splx(s);
           NDBGL2(L2_T_MSG, "isdnif %d", l2sc->drv->isdnif);
   }
   
   /*---------------------------------------------------------------------------*
    *      Q.921 timer T203 timeout function
    *---------------------------------------------------------------------------*/
   #if I4B_T203_ACTIVE
   static void
   i4b_T203_timeout(l2_softc_t *l2sc)
   {
           NDBGL2(L2_T_ERR, "isdnif %d", l2sc->isdnif);
           i4b_next_l2state(l2sc, EV_T203EXP);
   }
   #endif
   
   /*---------------------------------------------------------------------------*
    *      Q.921 timer T203 start
    *---------------------------------------------------------------------------*/
   void
   i4b_T203_start(l2_softc_t *l2sc)
   {
   #if I4B_T203_ACTIVE
           if (l2sc->T203 == TIMER_ACTIVE)
                   return;
                   
           NDBGL2(L2_T_MSG, "isdnif %d", l2sc->isdnif);
           l2sc->T203 = TIMER_ACTIVE;
   
           START_TIMER(l2sc->T203_callout, i4b_T203_timeout, l2sc, T203DEF);
   #endif
   }
   
   /*---------------------------------------------------------------------------*
    *      Q.921 timer T203 stop
    *---------------------------------------------------------------------------*/
   void
   i4b_T203_stop(l2_softc_t *l2sc)
   {
   #if I4B_T203_ACTIVE
           int s;
           s = splnet();
           if(l2sc->T203 != TIMER_IDLE)
           {
                   STOP_TIMER(l2sc->T203_callout, i4b_T203_timeout, l2sc);
                   l2sc->T203 = TIMER_IDLE;
           }
           splx(s);
           NDBGL2(L2_T_MSG, "isdnif %d", l2sc->isdnif);
   #endif
   }
   
   /*---------------------------------------------------------------------------*
    *      Q.921 timer T203 restart
    *---------------------------------------------------------------------------*/
   void
   i4b_T203_restart(l2_softc_t *l2sc)
   {
   #if I4B_T203_ACTIVE
           int s;
           s = splnet();
   
           if(l2sc->T203 != TIMER_IDLE)
           {
                   STOP_TIMER(l2sc->T203_callout, i4b_T203_timerout, l2sc);
           }
           else
           {
                   l2sc->T203 = TIMER_ACTIVE;
           }
   
           START_TIMER(l2sc->T203_callout, i4b_T203_timerout, l2sc, T203DEF);      
           splx(s);
           NDBGL2(L2_T_MSG, "isdnif %d", l2sc->isdnif);
   #endif
   }
   
   #endif /* NI4BQ921 > 0 */

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