The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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

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    1 /*      $NetBSD: i4b_capi_llif.c,v 1.2 2003/09/26 15:17:23 pooka Exp $  */
    2 
    3 /*
    4  * Copyright (c) 2001 Cubical Solutions Ltd. All rights reserved.
    5  *
    6  * Redistribution and use in source and binary forms, with or without
    7  * modification, are permitted provided that the following conditions
    8  * are met:
    9  * 1. Redistributions of source code must retain the above copyright
   10  *    notice, this list of conditions and the following disclaimer.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in the
   13  *    documentation and/or other materials provided with the distribution.
   14  *
   15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   25  * SUCH DAMAGE.
   26  *
   27  * capi/capi_llif.c     The i4b CAPI link layer interface.
   28  *
   29  * $FreeBSD: src/sys/i4b/capi/capi_llif.c,v 1.1 2001/05/25 08:39:31 hm Exp $
   30  */
   31 
   32 #include <sys/cdefs.h>
   33 __KERNEL_RCSID(0, "$NetBSD: i4b_capi_llif.c,v 1.2 2003/09/26 15:17:23 pooka Exp $");
   34 
   35 #include <sys/param.h>
   36 #include <sys/kernel.h>
   37 #include <sys/systm.h>
   38 #include <sys/mbuf.h>
   39 #include <sys/socket.h>
   40 #include <sys/callout.h>
   41 #include <net/if.h>
   42 
   43 #include <netisdn/i4b_debug.h>
   44 #include <netisdn/i4b_ioctl.h>
   45 #include <netisdn/i4b_cause.h>
   46 #include <netisdn/i4b_l3l4.h>
   47 #include <netisdn/i4b_mbuf.h>
   48 #include <netisdn/i4b_global.h>
   49 #include <netisdn/i4b_l4.h>
   50 #include <netisdn/i4b_capi.h>
   51 #include <netisdn/i4b_capi_msgs.h>
   52 
   53 /*
   54 //  capi_ll_control
   55 //      CAPI link layer control routine. Called by a link layer
   56 //      driver when its state changes.
   57 */
   58 
   59 int
   60 capi_ll_control(capi_softc_t *sc, int op, int arg)
   61 {
   62     switch (op) {
   63     case CAPI_CTRL_READY:
   64         if (arg) {
   65             sc->sc_state = C_READY;
   66 
   67             /*
   68              *  Register our CAPI ApplId and send CAPI_LISTEN_REQ
   69              *  with CIP Mask value 1 (match all).
   70              */
   71 
   72             sc->reg_appl(sc, I4BCAPI_APPLID, sc->sc_nbch);
   73             capi_listen_req(sc, 0x10007);
   74 
   75         } else {
   76             sc->sc_state = C_DOWN;
   77             /* XXX go through cds and notify L4 of pdeact? XXX */
   78         }
   79         break;
   80 
   81     case CAPI_CTRL_PROFILE:
   82         bcopy((char*) arg, &sc->sc_profile, sizeof(sc->sc_profile));
   83         break;
   84 
   85     case CAPI_CTRL_NEW_NCCI:
   86     case CAPI_CTRL_FREE_NCCI:
   87         /* We ignore the controller's NCCI notifications. */
   88         break;
   89 
   90     default:
   91         printf("capi%d: unknown control %d\n", sc->sc_unit, op);
   92     }
   93 
   94     return 0;
   95 }
   96 
   97 /*
   98 //  i4b_capi_handlers
   99 //      Array of message-handler pairs used to dispatch CAPI
  100 //      messages sent to I4BCAPI_APPLID.
  101 */
  102 
  103 static struct capi_cmdtab {
  104     u_int16_t cmd;
  105     void (*handler)(capi_softc_t *, struct mbuf *);
  106 } i4b_capi_handlers[] = {
  107     { CAPI_LISTEN_CONF,           capi_listen_conf },
  108     { CAPI_INFO_IND,              capi_info_ind },
  109     { CAPI_ALERT_CONF,            capi_alert_conf },
  110     { CAPI_CONNECT_CONF,          capi_connect_conf },
  111     { CAPI_CONNECT_IND,           capi_connect_ind },
  112     { CAPI_CONNECT_ACTIVE_IND,    capi_connect_active_ind },
  113     { CAPI_CONNECT_B3_CONF,       capi_connect_b3_conf },
  114     { CAPI_CONNECT_B3_IND,        capi_connect_b3_ind },
  115     { CAPI_CONNECT_B3_ACTIVE_IND, capi_connect_b3_active_ind },
  116     { CAPI_DATA_B3_CONF,          capi_data_b3_conf },
  117     { CAPI_DATA_B3_IND,           capi_data_b3_ind },
  118     { CAPI_DISCONNECT_B3_IND,     capi_disconnect_b3_ind },
  119     { CAPI_DISCONNECT_CONF,       capi_disconnect_conf },
  120     { CAPI_DISCONNECT_IND,        capi_disconnect_ind },
  121     { 0, 0 }
  122 };
  123 
  124 /*
  125 //  capi_ll_receive
  126 //      CAPI link layer receive upcall. Called by a link layer
  127 //      driver to dispatch incoming CAPI messages.
  128 */
  129 
  130 int
  131 capi_ll_receive(capi_softc_t *sc, struct mbuf *m)
  132 {
  133     u_int8_t *p = mtod(m, u_int8_t*);
  134     u_int16_t len, applid, msgid, cmd;
  135 
  136     capimsg_getu16(p + 0, &len);
  137     capimsg_getu16(p + 2, &applid);
  138     capimsg_getu16(p + 4, &cmd);
  139     capimsg_getu16(p + 6, &msgid);
  140 
  141 #if 0
  142     printf("capi%d: ll_receive hdr %04x %04x %04x %04x\n", sc->sc_unit,
  143            len, applid, cmd, msgid);
  144 #endif
  145 
  146     if (applid == I4BCAPI_APPLID) {
  147         struct capi_cmdtab *e;
  148         for (e = i4b_capi_handlers; e->cmd && e->cmd != cmd; e++);
  149         if (e->cmd) (*e->handler)(sc, m);
  150         else printf("capi%d: unknown message %04x\n", sc->sc_unit, cmd);
  151 
  152     } else {
  153         /* XXX we could handle arbitrary ApplIds here XXX */
  154         printf("capi%d: message %04x for unknown applid %d\n", sc->sc_unit,
  155                cmd, applid);
  156     }
  157 
  158     if (m->m_next) {
  159         i4b_Bfreembuf(m->m_next);
  160         m->m_next = NULL;
  161     }
  162     i4b_Dfreembuf(m);
  163     return(0);
  164 }

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