i4b_l4if.c

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    1 /*
    2  * Copyright (c) 1997, 2000 Hellmuth Michaelis. All rights reserved.
    3  *
    4  * Redistribution and use in source and binary forms, with or without
    5  * modification, are permitted provided that the following conditions
    6  * are met:
    7  * 1. Redistributions of source code must retain the above copyright
    8  *    notice, this list of conditions and the following disclaimer.
    9  * 2. Redistributions in binary form must reproduce the above copyright
   10  *    notice, this list of conditions and the following disclaimer in the
   11  *    documentation and/or other materials provided with the distribution.
   12  *
   13  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   14  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   16  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   17  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   18  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   19  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   20  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   21  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   22  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   23  * SUCH DAMAGE.
   24  *
   25  *---------------------------------------------------------------------------
   26  *
   27  *      i4b_l4if.c - Layer 3 interface to Layer 4
   28  *      -------------------------------------------
   29  *
   30  *      $Id: i4b_l4if.c,v 1.17 2003/10/03 16:38:44 pooka Exp $ 
   31  *
   32  * $FreeBSD$
   33  *
   34  *      last edit-date: [Fri Jan  5 11:33:47 2001]
   35  *
   36  *---------------------------------------------------------------------------*/
   37 
   38 #include <sys/cdefs.h>
   39 __KERNEL_RCSID(0, "$NetBSD: i4b_l4if.c,v 1.17 2003/10/03 16:38:44 pooka Exp $");
   40 
   41 #ifdef __FreeBSD__
   42 #include "i4bq931.h"
   43 #else
   44 #define NI4BQ931        1
   45 #endif
   46 #if NI4BQ931 > 0
   47 
   48 #include <sys/param.h>
   49 #include <sys/kernel.h>
   50 #include <sys/systm.h>
   51 #include <sys/mbuf.h>
   52 #include <sys/socket.h>
   53 #include <net/if.h>
   54 
   55 #if defined(__NetBSD__) && __NetBSD_Version__ >= 104230000
   56 #include <sys/callout.h>
   57 #endif
   58 
   59 #ifdef __FreeBSD__
   60 #include <machine/i4b_debug.h>
   61 #include <machine/i4b_ioctl.h>
   62 #include <machine/i4b_cause.h>
   63 #else
   64 #include <netisdn/i4b_debug.h>
   65 #include <netisdn/i4b_ioctl.h>
   66 #include <netisdn/i4b_cause.h>
   67 #endif
   68 
   69 #include <netisdn/i4b_isdnq931.h>
   70 #include <netisdn/i4b_l2.h>
   71 #include <netisdn/i4b_l1l2.h>
   72 #include <netisdn/i4b_l3l4.h>
   73 #include <netisdn/i4b_mbuf.h>
   74 #include <netisdn/i4b_global.h>
   75 
   76 #include <netisdn/i4b_l3.h>
   77 #include <netisdn/i4b_l3fsm.h>
   78 #include <netisdn/i4b_q931.h>
   79 
   80 #include <netisdn/i4b_l4.h>
   81 
   82 void n_connect_request(struct call_desc *cd);
   83 void n_connect_response(struct call_desc *cd, int response, int cause);
   84 void n_disconnect_request(struct call_desc *cd, int cause);
   85 void n_alert_request(struct call_desc *cd);
   86 void n_mgmt_command(struct isdn_l3_driver *drv, int cmd, void *parm);
   87 
   88 /*---------------------------------------------------------------------------*
   89  *      i4b_mdl_status_ind - status indication from lower layers
   90  *---------------------------------------------------------------------------*/
   91 int
   92 i4b_mdl_status_ind(struct isdn_l3_driver *d, int status, int parm)
   93 {
   94         int sendup, update_leds = 0;
   95         int i;
   96         
   97         NDBGL3(L3_MSG, "isdnif = %d, status = %d, parm = %d",
   98             d->isdnif, status, parm);
   99 
  100         switch(status)
  101         {
  102                 case STI_ATTACH:
  103                         if (parm) {
  104                                 NDBGL3(L3_MSG, "STI_ATTACH: attaching isdnif %d", d->isdnif);
  105                         } else {
  106                                 NDBGL3(L3_MSG, "STI_ATTACH: dettaching isdnif %d", d->isdnif);
  107                         }
  108                         break;
  109 
  110                 case STI_L1STAT:
  111                         i4b_l4_l12stat(d, 1, parm);
  112                         update_leds = 1;
  113                         NDBGL3(L3_MSG, "STI_L1STAT: isdnif %d layer 1 = %s", d->isdnif, status ? "up" : "down");
  114                         break;
  115                         
  116                 case STI_L2STAT:
  117                         i4b_l4_l12stat(d, 2, parm);
  118                         update_leds = 1;
  119                         NDBGL3(L3_MSG, "STI_L2STAT: isdnif %d layer 2 = %s", d->isdnif, status ? "up" : "down");
  120                         break;
  121 
  122                 case STI_TEIASG:
  123                         d->tei = parm;
  124                         i4b_l4_teiasg(d, parm);
  125                         update_leds = 1;
  126                         NDBGL3(L3_MSG, "STI_TEIASG: isdnif %d TEI = %d = 0x%02x", d->isdnif, parm, parm);
  127                         break;
  128 
  129                 case STI_PDEACT:        /* L1 T4 timeout */
  130                         NDBGL3(L3_ERR, "STI_PDEACT: isdnif %d TEI = %d = 0x%02x", d->isdnif, parm, parm);
  131 
  132                         update_leds = 1;
  133                         sendup = 0;
  134 
  135                         for(i=0; i < num_call_desc; i++)
  136                         {
  137                                 if(call_desc[i].isdnif == d->isdnif)
  138                                 {
  139                                         i4b_l3_stop_all_timers(&(call_desc[i]));
  140                                         if(call_desc[i].cdid != CDID_UNUSED) {
  141                                                 sendup++;
  142                                                 call_desc[i].cdid = CDID_UNUSED;
  143                                         }
  144                                 }
  145                         }
  146 
  147                         d->dl_est = DL_DOWN;
  148 
  149                         for (i = 0; i < d->nbch; i++)
  150                                 d->bch_state[i] = BCH_ST_FREE;
  151                         d->tei = -1;
  152 
  153                         if(sendup)
  154                         {
  155                                 i4b_l4_pdeact(d, sendup);
  156                         }
  157                         break;
  158 
  159                 case STI_NOL1ACC:       /* no outgoing access to S0 */
  160                         NDBGL3(L3_ERR, "STI_NOL1ACC: isdnif %d no outgoing access to S0", d->isdnif);
  161                         update_leds = 1;
  162 
  163                         for(i=0; i < num_call_desc; i++)
  164                         {
  165                                 if(call_desc[i].isdnif == d->isdnif)
  166                                 {
  167                                         if(call_desc[i].cdid != CDID_UNUSED)
  168                                         {
  169                                                 SET_CAUSE_TYPE(call_desc[i].cause_in, CAUSET_I4B);
  170                                                 SET_CAUSE_VAL(call_desc[i].cause_in, CAUSE_I4B_L1ERROR);
  171                                                 i4b_l4_disconnect_ind(&(call_desc[i]));
  172                                         }
  173                                 }
  174                         }
  175                         d->dl_est = DL_DOWN;
  176 
  177                         for (i = 0; i < d->nbch; i++)
  178                                 d->bch_state[i] = BCH_ST_FREE;
  179                         d->tei = -1;
  180 
  181                         break;
  182 
  183                 default:
  184                         NDBGL3(L3_ERR, "ERROR, isdnif %d, unknown status value %d!", d->isdnif, status);
  185                         break;
  186         }
  187 
  188         if (update_leds && d != NULL)
  189                 update_controller_leds(d);
  190 
  191         return(0);
  192 }
  193 
  194 void
  195 update_controller_leds(struct isdn_l3_driver *d)
  196 {
  197         intptr_t leds = 0;
  198 
  199         if (d->tei != -1)
  200                 leds |= CMRLEDS_TEI;
  201         if (d->bch_state[CHAN_B1] != BCH_ST_FREE)
  202                 leds |= CMRLEDS_B0;
  203         if (d->bch_state[CHAN_B2] != BCH_ST_FREE)
  204                 leds |= CMRLEDS_B1;
  205 
  206         d->l3driver->N_MGMT_COMMAND(d, CMR_SETLEDS, (void*)leds);
  207 }
  208 
  209 /*---------------------------------------------------------------------------*
  210  *      send command to the lower layers
  211  *---------------------------------------------------------------------------*/
  212 void
  213 n_mgmt_command(struct isdn_l3_driver *d, int cmd, void *parm)
  214 {
  215         int i;
  216 
  217         switch(cmd)
  218         {
  219                 case CMR_DOPEN:
  220                         NDBGL3(L3_MSG, "CMR_DOPEN for isdnif %d", d->isdnif);
  221                         
  222                         for(i=0; i < num_call_desc; i++)
  223                         {
  224                                 if(call_desc[i].isdnif == d->isdnif)
  225                                 {
  226                                         call_desc[i].cdid = CDID_UNUSED;
  227                                 }
  228                         }
  229                         d->dl_est = DL_DOWN;
  230                         for (i = 0; i < d->nbch; i++)
  231                                 d->bch_state[i] = BCH_ST_FREE;
  232                         d->tei = -1;
  233 
  234                         break;
  235 
  236                 case CMR_DCLOSE:
  237                         NDBGL3(L3_MSG, "CMR_DCLOSE for isdnif %d", d->isdnif);
  238                         break;
  239                         
  240                 default:
  241                         NDBGL3(L3_MSG, "unknown cmd %d for isdnif %d",
  242                             cmd, d->isdnif);
  243                         break;
  244         }
  245 
  246         i4b_mdl_command_req(d, cmd, parm);
  247 }
  248 
  249 /*---------------------------------------------------------------------------*
  250  *      handle connect request message from userland
  251  *---------------------------------------------------------------------------*/
  252 void
  253 n_connect_request(struct call_desc *cd)
  254 {
  255         next_l3state(cd, EV_SETUPRQ);   
  256 }
  257 
  258 /*---------------------------------------------------------------------------*
  259  *      handle setup response message from userland
  260  *---------------------------------------------------------------------------*/
  261 void
  262 n_connect_response(struct call_desc *cd, int response, int cause)
  263 {
  264         struct isdn_l3_driver *d = cd->l3drv;
  265         int chstate;
  266 
  267         T400_stop(cd);
  268         
  269         cd->response = response;
  270         cd->cause_out = cause;
  271 
  272         switch(response)
  273         {
  274                 case SETUP_RESP_ACCEPT:
  275                         next_l3state(cd, EV_SETACRS);
  276                         chstate = BCH_ST_USED;
  277                         break;
  278                 
  279                 case SETUP_RESP_REJECT:
  280                         next_l3state(cd, EV_SETRJRS);
  281                         chstate = BCH_ST_FREE;
  282                         break;
  283                         
  284                 case SETUP_RESP_DNTCRE:
  285                         next_l3state(cd, EV_SETDCRS);
  286                         chstate = BCH_ST_FREE;
  287                         break;
  288 
  289                 default:        /* failsafe */
  290                         next_l3state(cd, EV_SETDCRS);
  291                         chstate = BCH_ST_FREE;
  292                         NDBGL3(L3_ERR, "unknown response, doing SETUP_RESP_DNTCRE");
  293                         break;
  294         }
  295 
  296         if((cd->channelid >= 0) && (cd->channelid < d->nbch))
  297         {
  298                 d->bch_state[cd->channelid] = chstate;
  299                 /*
  300                  * XXX: don't call l2 function for active cards
  301                  */
  302                 if (d->l3driver->N_DOWNLOAD == NULL)
  303                         i4b_l2_channel_set_state(cd->l3drv,
  304                             cd->channelid, chstate);
  305                 update_controller_leds(d);
  306         }
  307         else
  308         {
  309                 NDBGL3(L3_MSG, "Warning, invalid channelid %d, response = %d\n", cd->channelid, response);
  310         }
  311 }
  312 
  313 /*---------------------------------------------------------------------------*
  314  *      handle disconnect request message from userland
  315  *---------------------------------------------------------------------------*/
  316 void
  317 n_disconnect_request(struct call_desc *cd, int cause)
  318 {
  319         cd->cause_out = cause;
  320 
  321         next_l3state(cd, EV_DISCRQ);
  322 }
  323 
  324 /*---------------------------------------------------------------------------*
  325  *      handle alert request message from userland
  326  *---------------------------------------------------------------------------*/
  327 void
  328 n_alert_request(struct call_desc *cd)
  329 {
  330         next_l3state(cd, EV_ALERTRQ);
  331 }
  332 
  333 #endif /* NI4BQ931 > 0 */
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FreeBSD/Linux Kernel Cross Reference sys/netisdn/i4b_l4if.c

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sys/netisdn/i4b_l4if.c
