sys/netisdn/i4b_capi_llif.c

   1 /*      $NetBSD: i4b_capi_llif.c,v 1.4 2009/03/18 17:06:52 cegger 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 1.4 2009/03/18 17:06:52 cegger 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         memcpy(&sc->sc_profile, (char*) arg, 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 }