FreeBSD/Linux Kernel Cross Reference
sys/netisdn/i4b_capi_llif.c

     /*      $NetBSD: i4b_capi_llif.c,v 1.2 2003/09/26 15:17:23 pooka Exp $  */
     
     /*
      * Copyright (c) 2001 Cubical Solutions Ltd. 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.
     *
     * capi/capi_llif.c     The i4b CAPI link layer interface.
     *
     * $FreeBSD: src/sys/i4b/capi/capi_llif.c,v 1.1 2001/05/25 08:39:31 hm Exp $
     */
    
    #include <sys/cdefs.h>
    __KERNEL_RCSID(0, "$NetBSD: i4b_capi_llif.c,v 1.2 2003/09/26 15:17:23 pooka Exp $");
    
    #include <sys/param.h>
    #include <sys/kernel.h>
    #include <sys/systm.h>
    #include <sys/mbuf.h>
    #include <sys/socket.h>
    #include <sys/callout.h>
    #include <net/if.h>
    
    #include <netisdn/i4b_debug.h>
    #include <netisdn/i4b_ioctl.h>
    #include <netisdn/i4b_cause.h>
    #include <netisdn/i4b_l3l4.h>
    #include <netisdn/i4b_mbuf.h>
    #include <netisdn/i4b_global.h>
    #include <netisdn/i4b_l4.h>
    #include <netisdn/i4b_capi.h>
    #include <netisdn/i4b_capi_msgs.h>
    
    /*
    //  capi_ll_control
    //      CAPI link layer control routine. Called by a link layer
    //      driver when its state changes.
    */
    
    int
    capi_ll_control(capi_softc_t *sc, int op, int arg)
    {
        switch (op) {
        case CAPI_CTRL_READY:
            if (arg) {
                sc->sc_state = C_READY;
    
                /*
                 *  Register our CAPI ApplId and send CAPI_LISTEN_REQ
                 *  with CIP Mask value 1 (match all).
                 */
    
                sc->reg_appl(sc, I4BCAPI_APPLID, sc->sc_nbch);
                capi_listen_req(sc, 0x10007);
    
            } else {
                sc->sc_state = C_DOWN;
                /* XXX go through cds and notify L4 of pdeact? XXX */
            }
            break;
    
        case CAPI_CTRL_PROFILE:
            bcopy((char*) arg, &sc->sc_profile, sizeof(sc->sc_profile));
            break;
    
        case CAPI_CTRL_NEW_NCCI:
        case CAPI_CTRL_FREE_NCCI:
            /* We ignore the controller's NCCI notifications. */
            break;
    
        default:
            printf("capi%d: unknown control %d\n", sc->sc_unit, op);
        }
    
        return 0;
    }
    
    /*
    //  i4b_capi_handlers
    //      Array of message-handler pairs used to dispatch CAPI
   //      messages sent to I4BCAPI_APPLID.
   */
   
   static struct capi_cmdtab {
       u_int16_t cmd;
       void (*handler)(capi_softc_t *, struct mbuf *);
   } i4b_capi_handlers[] = {
       { CAPI_LISTEN_CONF,           capi_listen_conf },
       { CAPI_INFO_IND,              capi_info_ind },
       { CAPI_ALERT_CONF,            capi_alert_conf },
       { CAPI_CONNECT_CONF,          capi_connect_conf },
       { CAPI_CONNECT_IND,           capi_connect_ind },
       { CAPI_CONNECT_ACTIVE_IND,    capi_connect_active_ind },
       { CAPI_CONNECT_B3_CONF,       capi_connect_b3_conf },
       { CAPI_CONNECT_B3_IND,        capi_connect_b3_ind },
       { CAPI_CONNECT_B3_ACTIVE_IND, capi_connect_b3_active_ind },
       { CAPI_DATA_B3_CONF,          capi_data_b3_conf },
       { CAPI_DATA_B3_IND,           capi_data_b3_ind },
       { CAPI_DISCONNECT_B3_IND,     capi_disconnect_b3_ind },
       { CAPI_DISCONNECT_CONF,       capi_disconnect_conf },
       { CAPI_DISCONNECT_IND,        capi_disconnect_ind },
       { 0, 0 }
   };
   
   /*
   //  capi_ll_receive
   //      CAPI link layer receive upcall. Called by a link layer
   //      driver to dispatch incoming CAPI messages.
   */
   
   int
   capi_ll_receive(capi_softc_t *sc, struct mbuf *m)
   {
       u_int8_t *p = mtod(m, u_int8_t*);
       u_int16_t len, applid, msgid, cmd;
   
       capimsg_getu16(p + 0, &len);
       capimsg_getu16(p + 2, &applid);
       capimsg_getu16(p + 4, &cmd);
       capimsg_getu16(p + 6, &msgid);
   
   #if 0
       printf("capi%d: ll_receive hdr %04x %04x %04x %04x\n", sc->sc_unit,
              len, applid, cmd, msgid);
   #endif
   
       if (applid == I4BCAPI_APPLID) {
           struct capi_cmdtab *e;
           for (e = i4b_capi_handlers; e->cmd && e->cmd != cmd; e++);
           if (e->cmd) (*e->handler)(sc, m);
           else printf("capi%d: unknown message %04x\n", sc->sc_unit, cmd);
   
       } else {
           /* XXX we could handle arbitrary ApplIds here XXX */
           printf("capi%d: message %04x for unknown applid %d\n", sc->sc_unit,
                  cmd, applid);
       }
   
       if (m->m_next) {
           i4b_Bfreembuf(m->m_next);
           m->m_next = NULL;
       }
       i4b_Dfreembuf(m);
       return(0);
   }

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